From: Daniel Hokka Zakrisson Date: Fri, 27 Jul 2007 19:49:44 +0000 (+0000) Subject: This commit was generated by cvs2svn to compensate for changes in r786, X-Git-Tag: libnl-1.0-11~3 X-Git-Url: http://git.onelab.eu/?p=libnl.git;a=commitdiff_plain;h=4cee2ecb3b8afa0637e6f5fe4c57985a4bc740ff This commit was generated by cvs2svn to compensate for changes in r786, which included commits to RCS files with non-trunk default branches. --- diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..371ec20 --- /dev/null +++ b/COPYING @@ -0,0 +1,461 @@ + + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. 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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + + END OF TERMS AND CONDITIONS diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..658d251 --- /dev/null +++ b/ChangeLog @@ -0,0 +1,260 @@ +Summary of Changes from 1.0-pre5 to 1.0-pre6 +================================================ + Christopher Aillon + o Use $(libdir) instead of $(prefix)/lib for 64bit awesomeness. + + Thomas Graf + o Extend nl_msg to include source address, destination address + and the protocol being used. + o Make nl_send*() take a nl_msg instead of a nlmsghdr (API BREAK) + o Change callbacks to take a nl_msg instead of source address + and nlmsghdr (API BREAK) + o caches must specify the protocol they're hooked up from now on + if they intend to be associated with message types. + o cache_mngt_associate now takes the protocol besides the message + type to allow for multiple protocols to be supported (API BREAK) + o overwrite destination address in nl_send() when specified in the + message itself, allows for unbound addressing. + o Support for netlink based fib_lookup() + o Documentation fixes + o Fix double nlmsg_free() in nl_recvmsgs() while receiving + a multipart message and the read was interrupted. + o Change cache operations to store names for message types. + o Provide interface to convert message type to character string. + o Add dp_dump_msgtype to prefix each dumped element with a + pretty printed message type. + o netlink fib lookup support + o nl_recvmsgs() debugging + o use nl_cachemngt_type2name() when pretty printing netlink header + o Routing protocol translations. + o Routing metric translations. + o Revised route dumping + o Nexthop flag translations. + o Add support for IFF_DORMANT + + Petr Gotthard + Siemens AG Oesterreich + o Fix access to obj after freeing it + o Fix u32 selector access after realloc() + o Fix missing out-of-memory error handling in various places + o Enhance nl-monitor to have group selection selectable and + demonstrate usage of select() + o Don't ignore IFF_RUNNING any longer + o fw classifier support + + Patrick McHardy + o Fix conflicting types for __u64 + o Fix printf format string warnings + o Fix object cloning + o Deal with structure padding in nl_object_clone + o Fix nl_addr leak + o Set ce_msgtype in all parsed objects + o Fix addr flag filter + o Fix RTNLGRP definitions (was based on broken kernel version) + o Export nl_get_errno() + o Add function to get/set peer pid + o Add IFF_LOWER_UP + o Add/export some missing accessor functions + o print /0 prefix in nl_addr2str() + o Fix invalid free in nl_addr_parse for AF_UNSPEC addresses + o Use __str2flags instead of __str2type in rtnl_link_str2flags() + o Make sure object and filter types match in nl_object_match() + o Add support for credential passing over netlink sockets (API BREAK) + o Add support for custom dump callbacks + o Add NL_DUMP_ENV format + + Michael Biebl + "Alex V. Myltsev" + o Makefile fixes + + +Summary of Changes from 1.0-pre4 to 1.0-pre5 +================================================ + Thomas Graf + o Use minimized local copies for , , + and to avoid compile troubles with + applications including + Reported by Christopher Aillon. + +Summary of Changes from 1.0-pre3 to 1.0-pre4 +================================================ + Thomas Graf + o Fix wrong rtnl_addr_set_prefixlen() external declaration, + reported by Dan Williams. + o Fix nl_addr_parse() to not change the original string + for prefixes. + o Do not build documentation per default, but have the user + issue 'make gendoc' + o Assume neighbours to be permanent, set NUD_PERMANENT if not + specified otherwise. + +Summary of Changes from 1.0-pre2 to 1.0-pre3 +================================================ + Thomas Graf + o Fix SFQ parser to allocate qdisc options. + o Fix rule statistics dumping to not call itself. + o Complete Netem qdisc interface. + o Add rtnl_*_put() and rtnl_*_free() to increase readability. + o Cleanup of nl-* tools + o Fix inclusion guards of route/neightbl.h + o Fix nl_connect() to only modify rx/tx socket buffers if not + already modified by the user. + o Fix wrong nl_handle_alloc() prototype. + o Fix typo in route/addr.c causing label to be marked as + local address. + o Use ~0UL as default prefix length instead of 0. + o Fix neighbour message parser to correctly store core. + attributes and provide them again. + o Fix neighbour message parser to correctly guess address family. + to make it compatible with nl_addr_parse() and ether llc + addresses. + o Add rtnl_route_table2str(), rtnl_route_str2table(). + o Add nl_cache_nitems_filter() to find out if a filter produces + any matches. + o Remove rtnl_rule_set_(dst|src)_str() (obsolete). + o Remove scope and protocol field of routing rule. + o Complete routing rules module. + o Move realms translations from route to rtnl module. + +Summary of Changes from 1.0-pre1 to 1.0-pre2 +================================================ + Thomas Graf + o More API documentation + o Added flags argument to rtnl_addr_(add|build_add_request)(). + o Added rtnl_addr_(set|get)_multicast(). + o Moved scope translations routines from route/route.c to + route/rtnl.c, required by other modules as well. + o Removed old rtattr bits from rtnetlink-kernel.h + o Customized libnl.css for doxygen documentation + o Removed non-reentrant translation routines, only bloating + the code and too risky. + o Fixed wrong version number from 1.0-pre1. + o Reenabled unfinished policer module. + o Reworked TBF module, automatic caluclation of transmit times, + limit setable via latency, automatic cell size calculation, + options TLV generation. (untested) + o Renamed nl_xmittime() to rtnl_tc_calc_txtime(). + o Renamde nl_build_rtable() to rtnl_tc_build_rate_table() + + Petr Gotthard , + Siemens AG Oesterreich + o Fix symlinks to libnl library files to be moveable + o Fix extern struct prototypes meant to be static. + o Add empty install target to src/Makefile + + Simon Stelling + o Use LIBDIR instead of $(prefix)/lib for users to alllow librariers + into $(prefix)/lib64. + +Summary of Changes from 0.5.0 to 1.0-pre1 +================================================ + Thomas Graf + o Uncountable number of changes, rewrite of certain modules, + several major API breakages + + Petr Gotthard , + Siemens AG Oesterreich + o added class_build, rtnl_class_build_add_request, rtnl_class_add + o added HTB (Hierachical Token Bucket) class support + o added nl_xmittime, nl_build_rtable + o added nl_data_append to realloc a nl_data structure + o added rtnl_rcopy_ratespec as reverse to rtnl_copy_ratespec + o fixed byte order conversion of rtnl_filter.protocol + o SuSE and Fedora Linux compile fixes + o fixed u32 classifier support + o added rtnl_u32_set_handle, rtnl_u32_set_classid, rtnl_u32_set_flags + and several rtnl_u32_add_key_... operations to u32 classifier + +Summary of Changes from 0.4.4 to 0.5.0 +================================================ + Thomas Graf + o API documentation + o nl_cache_filter to manually filter on a object + o partial routing support + o routing rules support + o Propely set address family when setting addresses + o debug flag and some rare messages, more to come + o make error mesage verboseness configureable + o tc fixes to wait for ack + o cleanup and adaption of address code to latest internal API + o various cleanups + o dozens of API breakages (better now than later) + + Daniel Hottinger + o arch 64bit printf length modifier fixes + + Baruch Even , + Mediatrix Telecom, inc. + o address support + +Summary of changes from 0.4.3 to 0.4.4 +================================================ + Thomas Graf : + o overall cleanups for better code quality + o replace dump_(brief|full|with_stats) ops with + dump[NL_DUMP_MAX] array to allow further additions without + breaking the ABI. + o add of send_ack callback, called whenever when oppenent + asks for an ACK. + o make nl_parse_rtattr initialize the tb buffer like in the + kernel, caller must no longer take care of it. + o remove nl_addrnattr (obsolete) + o fixed nl_msg_append_raw to correctly calculate length + for raw data not aligned to NLMSG_ALIGN + o fix memory leak in nl_recv in case of errors + o correctly check sequence numbers if more than one message + was sent out before the answer is being received. + o add workaround for buggy netlink applications not properly + setting NLM_F_MULTI. + +Summary of changes from 0.4.2 to 0.4.3 +================================================ + + Thomas Graf : + o use parser_param in nl_cache_parse + o EGP: dump nfilters attribute + o allow retrieving of filters attached to classes via + FILTER_CACHE_PARENT(C) cache argument + o filter message building API + +Summary of changes from 0.4.1 to 0.4.2 +================================================ + + Baruch Even : + o memory leak fix in nl_parse_rtattr + o reset padding to 0 when appending raw data to a nl_msg + o avoid overwriting nlmsg ptr when buffer extending fails + o typo fixes + o create symlinks libnl.so.0 and libnl.so + + Thomas Graf : + o EGP classifier support + o avoid null pointer in printf call + o added nl_cache_parse to put nl_msg's into a cache + o added rtnl_filter_build to build a nl_msg filter message + o correctly install header files + o nl_msg_payload/nl_msg_payloadlen to access nl_msg payload + o nl_parse_nested macro to simplify nested TLV parsing + o NL_ERROR_ASSERT compile flag to assert(0) on errors + o rta alignment fix in nl_msg_append_tlv + o added nl_msg_parse_rtattr as shortcut for nl_parse_rtattr + for nl_msg API + o added nl_parse_nested for nested TLVs + o added RTA_ARRAY_ELEMS macro to calculate array length + for array TLVs + o added nl_wait_for_ack to wait for the next ack + o added rtnl_link_build_change_request(...) + o added rtnl_neigh_build_*_request + o converted neighbour code to use nl_wait_for_ack + o cb_recvmsgs_ow callback to overwrite internal calls to + nl_recvmsgs_def + o cb_seq_check callback to overwrite default sequence checking + o added nl_parser_param as argument for message parsers including + a callback to be called upon successful parsing of a message. + Removes the requirement of having all parsed messages to be added + to a cache. + o added cb_recv_ow and nl_send_ow callbacks to overwrite internal + calls to nl_recv and nl_send. + + Jamal Hadi Salim + o Linux 2.4 compile fixes diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..b21669a --- /dev/null +++ b/Makefile @@ -0,0 +1,64 @@ +# +# Makefile +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation version 2.1 +# of the License. +# +# Copyright (c) 2003-2006 Thomas Graf +# + +ifeq ($(shell [ ! -r Makefile.opts ] && echo 1),) + include Makefile.opts +endif + +SUBDIRS := lib include doc src +.PHONY: all clean distclean install gendoc $(SUBDIRS) + +all: Makefile.opts + @for dir in $(SUBDIRS); do \ + echo "Entering $$dir" && cd $$dir && $(MAKE) && cd ..; \ + done + +clean: Makefile.opts + rm -f cscope.* + @for dir in $(SUBDIRS); do \ + echo "Entering $$dir" && cd $$dir && $(MAKE) clean && cd ..; \ + done + +distclean: clean + @$(RM) -rf Makefile.opts autom4te.cache config.log config.status + @for dir in $(SUBDIRS); do \ + echo "Entering $$dir" && cd $$dir && $(MAKE) distclean && cd ..; \ + done + +install: Makefile.opts + @for dir in $(SUBDIRS); do \ + echo "Entering $$dir" && cd $$dir && $(MAKE) install && cd ..; \ + done + mkdir -p $(DESTDIR)$(libdir)/pkgconfig/ + install -m 0644 libnl-1.pc $(DESTDIR)$(libdir)/pkgconfig/ + +gendoc: + $(MAKE) -C doc gendoc + +show: Makefile.opts + @echo "CC: $(CC)" + @echo "RM: $(RM)" + @echo "CFLAGS: $(CFLAGS)" + @echo "DEPFLAGS: $(DEPFLAGS)" + @echo "LDFLAGS: $(LDFLAGS)" + @echo "DESTDIR: $(DESTDIR)" + @echo "prefix: $(prefix)" + @echo "libdir: $(libdir)" + @echo "includedir: $(includedir)" + +cscope: + cscope -b -q -R -Iinclude -slib -ssrc + + +$(SUBDIRS): + cd $@ && $(MAKE) + +-include Makefile.rules diff --git a/Makefile.opts.in b/Makefile.opts.in new file mode 100644 index 0000000..87d229b --- /dev/null +++ b/Makefile.opts.in @@ -0,0 +1,39 @@ +# +# Makefile.opts.in +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation version 2.1 +# of the License. +# +# Copyright (c) 2003-2006 Thomas Graf +# + +CC := @CC@ +CFLAGS := @CFLAGS@ +LDFLAGS := @LDFLAGS@ +CPPFLAGS := @CPPFLAGS@ +PACKAGE_NAME := @PACKAGE_NAME@ +PACKAGE_VERSION := @PACKAGE_VERSION@ + +LIBNL_LIB := @LIBNL_LIB@ + +prefix := @prefix@ +exec_prefix := @exec_prefix@ +libdir := @libdir@ +includedir := @includedir@ +mandir := @mandir@ +sysconfdir := @sysconfdir@ + +AR := ar +RM := rm +LN := ln + +DEPFLAGS += -M -I../include/ -I. $(CPPFLAGS) +CFLAGS += -g -I./include -I../include -I. $(CPPFLAGS) -D_GNU_SOURCE +MAKEFLAGS += --no-print-directory + +ifeq ($(CC),gcc) +CFLAGS += -Wall -ggdb +endif + diff --git a/Makefile.rules b/Makefile.rules new file mode 100644 index 0000000..de32230 --- /dev/null +++ b/Makefile.rules @@ -0,0 +1,37 @@ +# +# Makefile.rules +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation version 2.1 +# of the License. +# +# Copyright (c) 2003-2006 Thomas Graf +# + +.SUFFIXES: +.SUFFIXES: .deps/%.d .c + +%.o: %.c + @echo " CC $<"; \ + $(CC) $(CFLAGS) -c -o $@ $< + +.deps/%.d: %.c + @echo " DEP $<"; \ + $(CC) $(DEPFLAGS) $< > $@.tmp; \ + sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.tmp > $@; \ + rm -f $@.tmp + +Makefile.opts: + @echo "***" + @echo "*** No configuration found, please run ./configure" + @echo "***" + @exit 1 + +ifneq ($(MAKECMDGOALS),clean) +ifneq ($(MAKECMDGOALS),distclean) +ifneq ($(DEPS),) +-include $(DEPS) +endif +endif +endif diff --git a/aclocal.m4 b/aclocal.m4 new file mode 100644 index 0000000..177c013 --- /dev/null +++ b/aclocal.m4 @@ -0,0 +1,831 @@ +dnl aclocal.m4 generated automatically by aclocal 1.4-p6 + +dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without +dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A +dnl PARTICULAR PURPOSE. + +# lib-prefix.m4 serial 4 (gettext-0.14.2) +dnl Copyright (C) 2001-2005 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl From Bruno Haible. + +dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and +dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't +dnl require excessive bracketing. +ifdef([AC_HELP_STRING], +[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])], +[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])]) + +dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed +dnl to access previously installed libraries. The basic assumption is that +dnl a user will want packages to use other packages he previously installed +dnl with the same --prefix option. +dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate +dnl libraries, but is otherwise very convenient. +AC_DEFUN([AC_LIB_PREFIX], +[ + AC_BEFORE([$0], [AC_LIB_LINKFLAGS]) + AC_REQUIRE([AC_PROG_CC]) + AC_REQUIRE([AC_CANONICAL_HOST]) + AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) + dnl By default, look in $includedir and $libdir. + use_additional=yes + AC_LIB_WITH_FINAL_PREFIX([ + eval additional_includedir=\"$includedir\" + eval additional_libdir=\"$libdir\" + ]) + AC_LIB_ARG_WITH([lib-prefix], +[ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib + --without-lib-prefix don't search for libraries in includedir and libdir], +[ + if test "X$withval" = "Xno"; then + use_additional=no + else + if test "X$withval" = "X"; then + AC_LIB_WITH_FINAL_PREFIX([ + eval additional_includedir=\"$includedir\" + eval additional_libdir=\"$libdir\" + ]) + else + additional_includedir="$withval/include" + additional_libdir="$withval/lib" + fi + fi +]) + if test $use_additional = yes; then + dnl Potentially add $additional_includedir to $CPPFLAGS. + dnl But don't add it + dnl 1. if it's the standard /usr/include, + dnl 2. if it's already present in $CPPFLAGS, + dnl 3. if it's /usr/local/include and we are using GCC on Linux, + dnl 4. if it doesn't exist as a directory. + if test "X$additional_includedir" != "X/usr/include"; then + haveit= + for x in $CPPFLAGS; do + AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) + if test "X$x" = "X-I$additional_includedir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + if test "X$additional_includedir" = "X/usr/local/include"; then + if test -n "$GCC"; then + case $host_os in + linux* | gnu* | k*bsd*-gnu) haveit=yes;; + esac + fi + fi + if test -z "$haveit"; then + if test -d "$additional_includedir"; then + dnl Really add $additional_includedir to $CPPFLAGS. + CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir" + fi + fi + fi + fi + dnl Potentially add $additional_libdir to $LDFLAGS. + dnl But don't add it + dnl 1. if it's the standard /usr/lib, + dnl 2. if it's already present in $LDFLAGS, + dnl 3. if it's /usr/local/lib and we are using GCC on Linux, + dnl 4. if it doesn't exist as a directory. + if test "X$additional_libdir" != "X/usr/lib"; then + haveit= + for x in $LDFLAGS; do + AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) + if test "X$x" = "X-L$additional_libdir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + if test "X$additional_libdir" = "X/usr/local/lib"; then + if test -n "$GCC"; then + case $host_os in + linux*) haveit=yes;; + esac + fi + fi + if test -z "$haveit"; then + if test -d "$additional_libdir"; then + dnl Really add $additional_libdir to $LDFLAGS. + LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir" + fi + fi + fi + fi + fi +]) + +dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix, +dnl acl_final_exec_prefix, containing the values to which $prefix and +dnl $exec_prefix will expand at the end of the configure script. +AC_DEFUN([AC_LIB_PREPARE_PREFIX], +[ + dnl Unfortunately, prefix and exec_prefix get only finally determined + dnl at the end of configure. + if test "X$prefix" = "XNONE"; then + acl_final_prefix="$ac_default_prefix" + else + acl_final_prefix="$prefix" + fi + if test "X$exec_prefix" = "XNONE"; then + acl_final_exec_prefix='${prefix}' + else + acl_final_exec_prefix="$exec_prefix" + fi + acl_save_prefix="$prefix" + prefix="$acl_final_prefix" + eval acl_final_exec_prefix=\"$acl_final_exec_prefix\" + prefix="$acl_save_prefix" +]) + +dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the +dnl variables prefix and exec_prefix bound to the values they will have +dnl at the end of the configure script. +AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX], +[ + acl_save_prefix="$prefix" + prefix="$acl_final_prefix" + acl_save_exec_prefix="$exec_prefix" + exec_prefix="$acl_final_exec_prefix" + $1 + exec_prefix="$acl_save_exec_prefix" + prefix="$acl_save_prefix" +]) + +# lib-link.m4 serial 6 (gettext-0.14.3) +dnl Copyright (C) 2001-2005 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl From Bruno Haible. + +AC_PREREQ(2.50) + +dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and +dnl the libraries corresponding to explicit and implicit dependencies. +dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and +dnl augments the CPPFLAGS variable. +AC_DEFUN([AC_LIB_LINKFLAGS], +[ + AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) + AC_REQUIRE([AC_LIB_RPATH]) + define([Name],[translit([$1],[./-], [___])]) + define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], + [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) + AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [ + AC_LIB_LINKFLAGS_BODY([$1], [$2]) + ac_cv_lib[]Name[]_libs="$LIB[]NAME" + ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME" + ac_cv_lib[]Name[]_cppflags="$INC[]NAME" + ]) + LIB[]NAME="$ac_cv_lib[]Name[]_libs" + LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs" + INC[]NAME="$ac_cv_lib[]Name[]_cppflags" + AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME) + AC_SUBST([LIB]NAME) + AC_SUBST([LTLIB]NAME) + dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the + dnl results of this search when this library appears as a dependency. + HAVE_LIB[]NAME=yes + undefine([Name]) + undefine([NAME]) +]) + +dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode) +dnl searches for libname and the libraries corresponding to explicit and +dnl implicit dependencies, together with the specified include files and +dnl the ability to compile and link the specified testcode. If found, it +dnl sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} and +dnl LTLIB${NAME} variables and augments the CPPFLAGS variable, and +dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs +dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty. +AC_DEFUN([AC_LIB_HAVE_LINKFLAGS], +[ + AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) + AC_REQUIRE([AC_LIB_RPATH]) + define([Name],[translit([$1],[./-], [___])]) + define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], + [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) + + dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME + dnl accordingly. + AC_LIB_LINKFLAGS_BODY([$1], [$2]) + + dnl Add $INC[]NAME to CPPFLAGS before performing the following checks, + dnl because if the user has installed lib[]Name and not disabled its use + dnl via --without-lib[]Name-prefix, he wants to use it. + ac_save_CPPFLAGS="$CPPFLAGS" + AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME) + + AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [ + ac_save_LIBS="$LIBS" + LIBS="$LIBS $LIB[]NAME" + AC_TRY_LINK([$3], [$4], [ac_cv_lib[]Name=yes], [ac_cv_lib[]Name=no]) + LIBS="$ac_save_LIBS" + ]) + if test "$ac_cv_lib[]Name" = yes; then + HAVE_LIB[]NAME=yes + AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the $1 library.]) + AC_MSG_CHECKING([how to link with lib[]$1]) + AC_MSG_RESULT([$LIB[]NAME]) + else + HAVE_LIB[]NAME=no + dnl If $LIB[]NAME didn't lead to a usable library, we don't need + dnl $INC[]NAME either. + CPPFLAGS="$ac_save_CPPFLAGS" + LIB[]NAME= + LTLIB[]NAME= + fi + AC_SUBST([HAVE_LIB]NAME) + AC_SUBST([LIB]NAME) + AC_SUBST([LTLIB]NAME) + undefine([Name]) + undefine([NAME]) +]) + +dnl Determine the platform dependent parameters needed to use rpath: +dnl libext, shlibext, hardcode_libdir_flag_spec, hardcode_libdir_separator, +dnl hardcode_direct, hardcode_minus_L. +AC_DEFUN([AC_LIB_RPATH], +[ + dnl Tell automake >= 1.10 to complain if config.rpath is missing. + m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])]) + AC_REQUIRE([AC_PROG_CC]) dnl we use $CC, $GCC, $LDFLAGS + AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD, $with_gnu_ld + AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host + AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir + AC_CACHE_CHECK([for shared library run path origin], acl_cv_rpath, [ + CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \ + ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh + . ./conftest.sh + rm -f ./conftest.sh + acl_cv_rpath=done + ]) + wl="$acl_cv_wl" + libext="$acl_cv_libext" + shlibext="$acl_cv_shlibext" + hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec" + hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator" + hardcode_direct="$acl_cv_hardcode_direct" + hardcode_minus_L="$acl_cv_hardcode_minus_L" + dnl Determine whether the user wants rpath handling at all. + AC_ARG_ENABLE(rpath, + [ --disable-rpath do not hardcode runtime library paths], + :, enable_rpath=yes) +]) + +dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and +dnl the libraries corresponding to explicit and implicit dependencies. +dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables. +AC_DEFUN([AC_LIB_LINKFLAGS_BODY], +[ + define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], + [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) + dnl By default, look in $includedir and $libdir. + use_additional=yes + AC_LIB_WITH_FINAL_PREFIX([ + eval additional_includedir=\"$includedir\" + eval additional_libdir=\"$libdir\" + ]) + AC_LIB_ARG_WITH([lib$1-prefix], +[ --with-lib$1-prefix[=DIR] search for lib$1 in DIR/include and DIR/lib + --without-lib$1-prefix don't search for lib$1 in includedir and libdir], +[ + if test "X$withval" = "Xno"; then + use_additional=no + else + if test "X$withval" = "X"; then + AC_LIB_WITH_FINAL_PREFIX([ + eval additional_includedir=\"$includedir\" + eval additional_libdir=\"$libdir\" + ]) + else + additional_includedir="$withval/include" + additional_libdir="$withval/lib" + fi + fi +]) + dnl Search the library and its dependencies in $additional_libdir and + dnl $LDFLAGS. Using breadth-first-seach. + LIB[]NAME= + LTLIB[]NAME= + INC[]NAME= + rpathdirs= + ltrpathdirs= + names_already_handled= + names_next_round='$1 $2' + while test -n "$names_next_round"; do + names_this_round="$names_next_round" + names_next_round= + for name in $names_this_round; do + already_handled= + for n in $names_already_handled; do + if test "$n" = "$name"; then + already_handled=yes + break + fi + done + if test -z "$already_handled"; then + names_already_handled="$names_already_handled $name" + dnl See if it was already located by an earlier AC_LIB_LINKFLAGS + dnl or AC_LIB_HAVE_LINKFLAGS call. + uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'` + eval value=\"\$HAVE_LIB$uppername\" + if test -n "$value"; then + if test "$value" = yes; then + eval value=\"\$LIB$uppername\" + test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value" + eval value=\"\$LTLIB$uppername\" + test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value" + else + dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined + dnl that this library doesn't exist. So just drop it. + : + fi + else + dnl Search the library lib$name in $additional_libdir and $LDFLAGS + dnl and the already constructed $LIBNAME/$LTLIBNAME. + found_dir= + found_la= + found_so= + found_a= + if test $use_additional = yes; then + if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then + found_dir="$additional_libdir" + found_so="$additional_libdir/lib$name.$shlibext" + if test -f "$additional_libdir/lib$name.la"; then + found_la="$additional_libdir/lib$name.la" + fi + else + if test -f "$additional_libdir/lib$name.$libext"; then + found_dir="$additional_libdir" + found_a="$additional_libdir/lib$name.$libext" + if test -f "$additional_libdir/lib$name.la"; then + found_la="$additional_libdir/lib$name.la" + fi + fi + fi + fi + if test "X$found_dir" = "X"; then + for x in $LDFLAGS $LTLIB[]NAME; do + AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) + case "$x" in + -L*) + dir=`echo "X$x" | sed -e 's/^X-L//'` + if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then + found_dir="$dir" + found_so="$dir/lib$name.$shlibext" + if test -f "$dir/lib$name.la"; then + found_la="$dir/lib$name.la" + fi + else + if test -f "$dir/lib$name.$libext"; then + found_dir="$dir" + found_a="$dir/lib$name.$libext" + if test -f "$dir/lib$name.la"; then + found_la="$dir/lib$name.la" + fi + fi + fi + ;; + esac + if test "X$found_dir" != "X"; then + break + fi + done + fi + if test "X$found_dir" != "X"; then + dnl Found the library. + LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name" + if test "X$found_so" != "X"; then + dnl Linking with a shared library. We attempt to hardcode its + dnl directory into the executable's runpath, unless it's the + dnl standard /usr/lib. + if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then + dnl No hardcoding is needed. + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" + else + dnl Use an explicit option to hardcode DIR into the resulting + dnl binary. + dnl Potentially add DIR to ltrpathdirs. + dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. + haveit= + for x in $ltrpathdirs; do + if test "X$x" = "X$found_dir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + ltrpathdirs="$ltrpathdirs $found_dir" + fi + dnl The hardcoding into $LIBNAME is system dependent. + if test "$hardcode_direct" = yes; then + dnl Using DIR/libNAME.so during linking hardcodes DIR into the + dnl resulting binary. + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" + else + if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then + dnl Use an explicit option to hardcode DIR into the resulting + dnl binary. + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" + dnl Potentially add DIR to rpathdirs. + dnl The rpathdirs will be appended to $LIBNAME at the end. + haveit= + for x in $rpathdirs; do + if test "X$x" = "X$found_dir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + rpathdirs="$rpathdirs $found_dir" + fi + else + dnl Rely on "-L$found_dir". + dnl But don't add it if it's already contained in the LDFLAGS + dnl or the already constructed $LIBNAME + haveit= + for x in $LDFLAGS $LIB[]NAME; do + AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) + if test "X$x" = "X-L$found_dir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir" + fi + if test "$hardcode_minus_L" != no; then + dnl FIXME: Not sure whether we should use + dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" + dnl here. + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" + else + dnl We cannot use $hardcode_runpath_var and LD_RUN_PATH + dnl here, because this doesn't fit in flags passed to the + dnl compiler. So give up. No hardcoding. This affects only + dnl very old systems. + dnl FIXME: Not sure whether we should use + dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" + dnl here. + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" + fi + fi + fi + fi + else + if test "X$found_a" != "X"; then + dnl Linking with a static library. + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a" + else + dnl We shouldn't come here, but anyway it's good to have a + dnl fallback. + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name" + fi + fi + dnl Assume the include files are nearby. + additional_includedir= + case "$found_dir" in + */lib | */lib/) + basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'` + additional_includedir="$basedir/include" + ;; + esac + if test "X$additional_includedir" != "X"; then + dnl Potentially add $additional_includedir to $INCNAME. + dnl But don't add it + dnl 1. if it's the standard /usr/include, + dnl 2. if it's /usr/local/include and we are using GCC on Linux, + dnl 3. if it's already present in $CPPFLAGS or the already + dnl constructed $INCNAME, + dnl 4. if it doesn't exist as a directory. + if test "X$additional_includedir" != "X/usr/include"; then + haveit= + if test "X$additional_includedir" = "X/usr/local/include"; then + if test -n "$GCC"; then + case $host_os in + linux* | gnu* | k*bsd*-gnu) haveit=yes;; + esac + fi + fi + if test -z "$haveit"; then + for x in $CPPFLAGS $INC[]NAME; do + AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) + if test "X$x" = "X-I$additional_includedir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + if test -d "$additional_includedir"; then + dnl Really add $additional_includedir to $INCNAME. + INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir" + fi + fi + fi + fi + fi + dnl Look for dependencies. + if test -n "$found_la"; then + dnl Read the .la file. It defines the variables + dnl dlname, library_names, old_library, dependency_libs, current, + dnl age, revision, installed, dlopen, dlpreopen, libdir. + save_libdir="$libdir" + case "$found_la" in + */* | *\\*) . "$found_la" ;; + *) . "./$found_la" ;; + esac + libdir="$save_libdir" + dnl We use only dependency_libs. + for dep in $dependency_libs; do + case "$dep" in + -L*) + additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'` + dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME. + dnl But don't add it + dnl 1. if it's the standard /usr/lib, + dnl 2. if it's /usr/local/lib and we are using GCC on Linux, + dnl 3. if it's already present in $LDFLAGS or the already + dnl constructed $LIBNAME, + dnl 4. if it doesn't exist as a directory. + if test "X$additional_libdir" != "X/usr/lib"; then + haveit= + if test "X$additional_libdir" = "X/usr/local/lib"; then + if test -n "$GCC"; then + case $host_os in + linux* | gnu* | k*bsd*-gnu) haveit=yes;; + esac + fi + fi + if test -z "$haveit"; then + haveit= + for x in $LDFLAGS $LIB[]NAME; do + AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) + if test "X$x" = "X-L$additional_libdir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + if test -d "$additional_libdir"; then + dnl Really add $additional_libdir to $LIBNAME. + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir" + fi + fi + haveit= + for x in $LDFLAGS $LTLIB[]NAME; do + AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) + if test "X$x" = "X-L$additional_libdir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + if test -d "$additional_libdir"; then + dnl Really add $additional_libdir to $LTLIBNAME. + LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir" + fi + fi + fi + fi + ;; + -R*) + dir=`echo "X$dep" | sed -e 's/^X-R//'` + if test "$enable_rpath" != no; then + dnl Potentially add DIR to rpathdirs. + dnl The rpathdirs will be appended to $LIBNAME at the end. + haveit= + for x in $rpathdirs; do + if test "X$x" = "X$dir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + rpathdirs="$rpathdirs $dir" + fi + dnl Potentially add DIR to ltrpathdirs. + dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. + haveit= + for x in $ltrpathdirs; do + if test "X$x" = "X$dir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + ltrpathdirs="$ltrpathdirs $dir" + fi + fi + ;; + -l*) + dnl Handle this in the next round. + names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'` + ;; + *.la) + dnl Handle this in the next round. Throw away the .la's + dnl directory; it is already contained in a preceding -L + dnl option. + names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'` + ;; + *) + dnl Most likely an immediate library name. + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep" + LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep" + ;; + esac + done + fi + else + dnl Didn't find the library; assume it is in the system directories + dnl known to the linker and runtime loader. (All the system + dnl directories known to the linker should also be known to the + dnl runtime loader, otherwise the system is severely misconfigured.) + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" + LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name" + fi + fi + fi + done + done + if test "X$rpathdirs" != "X"; then + if test -n "$hardcode_libdir_separator"; then + dnl Weird platform: only the last -rpath option counts, the user must + dnl pass all path elements in one option. We can arrange that for a + dnl single library, but not when more than one $LIBNAMEs are used. + alldirs= + for found_dir in $rpathdirs; do + alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir" + done + dnl Note: hardcode_libdir_flag_spec uses $libdir and $wl. + acl_save_libdir="$libdir" + libdir="$alldirs" + eval flag=\"$hardcode_libdir_flag_spec\" + libdir="$acl_save_libdir" + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" + else + dnl The -rpath options are cumulative. + for found_dir in $rpathdirs; do + acl_save_libdir="$libdir" + libdir="$found_dir" + eval flag=\"$hardcode_libdir_flag_spec\" + libdir="$acl_save_libdir" + LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" + done + fi + fi + if test "X$ltrpathdirs" != "X"; then + dnl When using libtool, the option that works for both libraries and + dnl executables is -R. The -R options are cumulative. + for found_dir in $ltrpathdirs; do + LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir" + done + fi +]) + +dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR, +dnl unless already present in VAR. +dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes +dnl contains two or three consecutive elements that belong together. +AC_DEFUN([AC_LIB_APPENDTOVAR], +[ + for element in [$2]; do + haveit= + for x in $[$1]; do + AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) + if test "X$x" = "X$element"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + [$1]="${[$1]}${[$1]:+ }$element" + fi + done +]) + +# lib-ld.m4 serial 3 (gettext-0.13) +dnl Copyright (C) 1996-2003 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl Subroutines of libtool.m4, +dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision +dnl with libtool.m4. + +dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no. +AC_DEFUN([AC_LIB_PROG_LD_GNU], +[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld, +[# I'd rather use --version here, but apparently some GNU ld's only accept -v. +case `$LD -v 2>&1 conf$$.sh + echo "exit 0" >>conf$$.sh + chmod +x conf$$.sh + if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then + PATH_SEPARATOR=';' + else + PATH_SEPARATOR=: + fi + rm -f conf$$.sh +fi +ac_prog=ld +if test "$GCC" = yes; then + # Check if gcc -print-prog-name=ld gives a path. + AC_MSG_CHECKING([for ld used by GCC]) + case $host in + *-*-mingw*) + # gcc leaves a trailing carriage return which upsets mingw + ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; + *) + ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; + esac + case $ac_prog in + # Accept absolute paths. + [[\\/]* | [A-Za-z]:[\\/]*)] + [re_direlt='/[^/][^/]*/\.\./'] + # Canonicalize the path of ld + ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'` + while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do + ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"` + done + test -z "$LD" && LD="$ac_prog" + ;; + "") + # If it fails, then pretend we aren't using GCC. + ac_prog=ld + ;; + *) + # If it is relative, then search for the first ld in PATH. + with_gnu_ld=unknown + ;; + esac +elif test "$with_gnu_ld" = yes; then + AC_MSG_CHECKING([for GNU ld]) +else + AC_MSG_CHECKING([for non-GNU ld]) +fi +AC_CACHE_VAL(acl_cv_path_LD, +[if test -z "$LD"; then + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}" + for ac_dir in $PATH; do + test -z "$ac_dir" && ac_dir=. + if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then + acl_cv_path_LD="$ac_dir/$ac_prog" + # Check to see if the program is GNU ld. I'd rather use --version, + # but apparently some GNU ld's only accept -v. + # Break only if it was the GNU/non-GNU ld that we prefer. + case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in + *GNU* | *'with BFD'*) + test "$with_gnu_ld" != no && break ;; + *) + test "$with_gnu_ld" != yes && break ;; + esac + fi + done + IFS="$ac_save_ifs" +else + acl_cv_path_LD="$LD" # Let the user override the test with a path. +fi]) +LD="$acl_cv_path_LD" +if test -n "$LD"; then + AC_MSG_RESULT($LD) +else + AC_MSG_RESULT(no) +fi +test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH]) +AC_LIB_PROG_LD_GNU +]) + diff --git a/configure b/configure new file mode 100755 index 0000000..f76b7b4 --- /dev/null +++ b/configure @@ -0,0 +1,3724 @@ +#! /bin/sh +# Guess values for system-dependent variables and create Makefiles. +# Generated by GNU Autoconf 2.59 for libnl 1.0-pre6. +# +# Report bugs to . +# +# Copyright (C) 2003 Free Software Foundation, Inc. +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. +## --------------------- ## +## M4sh Initialization. ## +## --------------------- ## + +# Be Bourne compatible +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then + emulate sh + NULLCMD=: + # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' +elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then + set -o posix +fi +DUALCASE=1; export DUALCASE # for MKS sh + +# Support unset when possible. +if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then + as_unset=unset +else + as_unset=false +fi + + +# Work around bugs in pre-3.0 UWIN ksh. +$as_unset ENV MAIL MAILPATH +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +for as_var in \ + LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \ + LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \ + LC_TELEPHONE LC_TIME +do + if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then + eval $as_var=C; export $as_var + else + $as_unset $as_var + fi +done + +# Required to use basename. +if expr a : '\(a\)' >/dev/null 2>&1; then + as_expr=expr +else + as_expr=false +fi + +if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then + as_basename=basename +else + as_basename=false +fi + + +# Name of the executable. +as_me=`$as_basename "$0" || +$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \ + X"$0" : 'X\(//\)$' \| \ + X"$0" : 'X\(/\)$' \| \ + . : '\(.\)' 2>/dev/null || +echo X/"$0" | + sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; } + /^X\/\(\/\/\)$/{ s//\1/; q; } + /^X\/\(\/\).*/{ s//\1/; q; } + s/.*/./; q'` + + +# PATH needs CR, and LINENO needs CR and PATH. +# Avoid depending upon Character Ranges. +as_cr_letters='abcdefghijklmnopqrstuvwxyz' +as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ' +as_cr_Letters=$as_cr_letters$as_cr_LETTERS +as_cr_digits='0123456789' +as_cr_alnum=$as_cr_Letters$as_cr_digits + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + echo "#! /bin/sh" >conf$$.sh + echo "exit 0" >>conf$$.sh + chmod +x conf$$.sh + if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then + PATH_SEPARATOR=';' + else + PATH_SEPARATOR=: + fi + rm -f conf$$.sh +fi + + + as_lineno_1=$LINENO + as_lineno_2=$LINENO + as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null` + test "x$as_lineno_1" != "x$as_lineno_2" && + test "x$as_lineno_3" = "x$as_lineno_2" || { + # Find who we are. 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"$ac_site_file" + fi +done + +if test -r "$cache_file"; then + # Some versions of bash will fail to source /dev/null (special + # files actually), so we avoid doing that. + if test -f "$cache_file"; then + { echo "$as_me:$LINENO: loading cache $cache_file" >&5 +echo "$as_me: loading cache $cache_file" >&6;} + case $cache_file in + [\\/]* | ?:[\\/]* ) . $cache_file;; + *) . ./$cache_file;; + esac + fi +else + { echo "$as_me:$LINENO: creating cache $cache_file" >&5 +echo "$as_me: creating cache $cache_file" >&6;} + >$cache_file +fi + +# Check that the precious variables saved in the cache have kept the same +# value. +ac_cache_corrupted=false +for ac_var in `(set) 2>&1 | + sed -n 's/^ac_env_\([a-zA-Z_0-9]*\)_set=.*/\1/p'`; do + eval ac_old_set=\$ac_cv_env_${ac_var}_set + eval ac_new_set=\$ac_env_${ac_var}_set + eval ac_old_val="\$ac_cv_env_${ac_var}_value" + eval ac_new_val="\$ac_env_${ac_var}_value" + case $ac_old_set,$ac_new_set in + set,) + { echo "$as_me:$LINENO: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5 +echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;} + ac_cache_corrupted=: ;; + ,set) + { echo "$as_me:$LINENO: error: \`$ac_var' was not set in the previous run" >&5 +echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;} + ac_cache_corrupted=: ;; + ,);; + *) + if test "x$ac_old_val" != "x$ac_new_val"; then + { echo "$as_me:$LINENO: error: \`$ac_var' has changed since the previous run:" >&5 +echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;} + { echo "$as_me:$LINENO: former value: $ac_old_val" >&5 +echo "$as_me: former value: $ac_old_val" >&2;} + { echo "$as_me:$LINENO: current value: $ac_new_val" >&5 +echo "$as_me: current value: $ac_new_val" >&2;} + ac_cache_corrupted=: + fi;; + esac + # Pass precious variables to config.status. + if test "$ac_new_set" = set; then + case $ac_new_val in + *" "*|*" "*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*) + ac_arg=$ac_var=`echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;; + *) ac_arg=$ac_var=$ac_new_val ;; + esac + case " $ac_configure_args " in + *" '$ac_arg' "*) ;; # Avoid dups. Use of quotes ensures accuracy. + *) ac_configure_args="$ac_configure_args '$ac_arg'" ;; + esac + fi +done +if $ac_cache_corrupted; then + { echo "$as_me:$LINENO: error: changes in the environment can compromise the build" >&5 +echo "$as_me: error: changes in the environment can compromise the build" >&2;} + { { echo "$as_me:$LINENO: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&5 +echo "$as_me: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&2;} + { (exit 1); exit 1; }; } +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + + + + + + + + + + + + + + + + + + + + + + + + + + + ac_config_headers="$ac_config_headers lib/defs.h" + + +save_CFLAGS="${CFLAGS}" +save_LDFLAGS="${LDFLAGS}" +save_CPPFLAGS="${CPPFLAGS}" + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args. +set dummy ${ac_tool_prefix}gcc; ac_word=$2 +echo "$as_me:$LINENO: checking for $ac_word" >&5 +echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6 +if test "${ac_cv_prog_CC+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}gcc" + echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done +done + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + echo "$as_me:$LINENO: result: $CC" >&5 +echo "${ECHO_T}$CC" >&6 +else + echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6 +fi + +fi +if test -z "$ac_cv_prog_CC"; then + ac_ct_CC=$CC + # Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +echo "$as_me:$LINENO: checking for $ac_word" >&5 +echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6 +if test "${ac_cv_prog_ac_ct_CC+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="gcc" + echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done +done + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + echo "$as_me:$LINENO: result: $ac_ct_CC" >&5 +echo "${ECHO_T}$ac_ct_CC" >&6 +else + echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6 +fi + + CC=$ac_ct_CC +else + CC="$ac_cv_prog_CC" +fi + +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args. +set dummy ${ac_tool_prefix}cc; ac_word=$2 +echo "$as_me:$LINENO: checking for $ac_word" >&5 +echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6 +if test "${ac_cv_prog_CC+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}cc" + echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done +done + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + echo "$as_me:$LINENO: result: $CC" >&5 +echo "${ECHO_T}$CC" >&6 +else + echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6 +fi + +fi +if test -z "$ac_cv_prog_CC"; then + ac_ct_CC=$CC + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +echo "$as_me:$LINENO: checking for $ac_word" >&5 +echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6 +if test "${ac_cv_prog_ac_ct_CC+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="cc" + echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done +done + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + echo "$as_me:$LINENO: result: $ac_ct_CC" >&5 +echo "${ECHO_T}$ac_ct_CC" >&6 +else + echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6 +fi + + CC=$ac_ct_CC +else + CC="$ac_cv_prog_CC" +fi + +fi +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +echo "$as_me:$LINENO: checking for $ac_word" >&5 +echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6 +if test "${ac_cv_prog_CC+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + ac_prog_rejected=no +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done +done + +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# != 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@" + fi +fi +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + echo "$as_me:$LINENO: result: $CC" >&5 +echo "${ECHO_T}$CC" >&6 +else + echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6 +fi + +fi +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + for ac_prog in cl + do + # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. +set dummy $ac_tool_prefix$ac_prog; ac_word=$2 +echo "$as_me:$LINENO: checking for $ac_word" >&5 +echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6 +if test "${ac_cv_prog_CC+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="$ac_tool_prefix$ac_prog" + echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done +done + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + echo "$as_me:$LINENO: result: $CC" >&5 +echo "${ECHO_T}$CC" >&6 +else + echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6 +fi + + test -n "$CC" && break + done +fi +if test -z "$CC"; then + ac_ct_CC=$CC + for ac_prog in cl +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +echo "$as_me:$LINENO: checking for $ac_word" >&5 +echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6 +if test "${ac_cv_prog_ac_ct_CC+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="$ac_prog" + echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done +done + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + echo "$as_me:$LINENO: result: $ac_ct_CC" >&5 +echo "${ECHO_T}$ac_ct_CC" >&6 +else + echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6 +fi + + test -n "$ac_ct_CC" && break +done + + CC=$ac_ct_CC +fi + +fi + + +test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH +See \`config.log' for more details." >&5 +echo "$as_me: error: no acceptable C compiler found in \$PATH +See \`config.log' for more details." >&2;} + { (exit 1); exit 1; }; } + +# Provide some information about the compiler. +echo "$as_me:$LINENO:" \ + "checking for C compiler version" >&5 +ac_compiler=`set X $ac_compile; echo $2` +{ (eval echo "$as_me:$LINENO: \"$ac_compiler --version &5\"") >&5 + (eval $ac_compiler --version &5) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } +{ (eval echo "$as_me:$LINENO: \"$ac_compiler -v &5\"") >&5 + (eval $ac_compiler -v &5) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } +{ (eval echo "$as_me:$LINENO: \"$ac_compiler -V &5\"") >&5 + (eval $ac_compiler -V &5) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } + +cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files a.out a.exe b.out" +# Try to create an executable without -o first, disregard a.out. +# It will help us diagnose broken compilers, and finding out an intuition +# of exeext. +echo "$as_me:$LINENO: checking for C compiler default output file name" >&5 +echo $ECHO_N "checking for C compiler default output file name... $ECHO_C" >&6 +ac_link_default=`echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'` +if { (eval echo "$as_me:$LINENO: \"$ac_link_default\"") >&5 + (eval $ac_link_default) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; then + # Find the output, starting from the most likely. This scheme is +# not robust to junk in `.', hence go to wildcards (a.*) only as a last +# resort. + +# Be careful to initialize this variable, since it used to be cached. +# Otherwise an old cache value of `no' led to `EXEEXT = no' in a Makefile. +ac_cv_exeext= +# b.out is created by i960 compilers. +for ac_file in a_out.exe a.exe conftest.exe a.out conftest a.* conftest.* b.out +do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj ) + ;; + conftest.$ac_ext ) + # This is the source file. + ;; + [ab].out ) + # We found the default executable, but exeext='' is most + # certainly right. + break;; + *.* ) + ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + # FIXME: I believe we export ac_cv_exeext for Libtool, + # but it would be cool to find out if it's true. Does anybody + # maintain Libtool? --akim. + export ac_cv_exeext + break;; + * ) + break;; + esac +done +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { echo "$as_me:$LINENO: error: C compiler cannot create executables +See \`config.log' for more details." >&5 +echo "$as_me: error: C compiler cannot create executables +See \`config.log' for more details." >&2;} + { (exit 77); exit 77; }; } +fi + +ac_exeext=$ac_cv_exeext +echo "$as_me:$LINENO: result: $ac_file" >&5 +echo "${ECHO_T}$ac_file" >&6 + +# Check the compiler produces executables we can run. If not, either +# the compiler is broken, or we cross compile. +echo "$as_me:$LINENO: checking whether the C compiler works" >&5 +echo $ECHO_N "checking whether the C compiler works... $ECHO_C" >&6 +# FIXME: These cross compiler hacks should be removed for Autoconf 3.0 +# If not cross compiling, check that we can run a simple program. +if test "$cross_compiling" != yes; then + if { ac_try='./$ac_file' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + cross_compiling=no + else + if test "$cross_compiling" = maybe; then + cross_compiling=yes + else + { { echo "$as_me:$LINENO: error: cannot run C compiled programs. +If you meant to cross compile, use \`--host'. +See \`config.log' for more details." >&5 +echo "$as_me: error: cannot run C compiled programs. +If you meant to cross compile, use \`--host'. +See \`config.log' for more details." >&2;} + { (exit 1); exit 1; }; } + fi + fi +fi +echo "$as_me:$LINENO: result: yes" >&5 +echo "${ECHO_T}yes" >&6 + +rm -f a.out a.exe conftest$ac_cv_exeext b.out +ac_clean_files=$ac_clean_files_save +# Check the compiler produces executables we can run. If not, either +# the compiler is broken, or we cross compile. +echo "$as_me:$LINENO: checking whether we are cross compiling" >&5 +echo $ECHO_N "checking whether we are cross compiling... $ECHO_C" >&6 +echo "$as_me:$LINENO: result: $cross_compiling" >&5 +echo "${ECHO_T}$cross_compiling" >&6 + +echo "$as_me:$LINENO: checking for suffix of executables" >&5 +echo $ECHO_N "checking for suffix of executables... $ECHO_C" >&6 +if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5 + (eval $ac_link) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; then + # If both `conftest.exe' and `conftest' are `present' (well, observable) +# catch `conftest.exe'. For instance with Cygwin, `ls conftest' will +# work properly (i.e., refer to `conftest.exe'), while it won't with +# `rm'. +for ac_file in conftest.exe conftest conftest.*; do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj ) ;; + *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + export ac_cv_exeext + break;; + * ) break;; + esac +done +else + { { echo "$as_me:$LINENO: error: cannot compute suffix of executables: cannot compile and link +See \`config.log' for more details." >&5 +echo "$as_me: error: cannot compute suffix of executables: cannot compile and link +See \`config.log' for more details." >&2;} + { (exit 1); exit 1; }; } +fi + +rm -f conftest$ac_cv_exeext +echo "$as_me:$LINENO: result: $ac_cv_exeext" >&5 +echo "${ECHO_T}$ac_cv_exeext" >&6 + +rm -f conftest.$ac_ext +EXEEXT=$ac_cv_exeext +ac_exeext=$EXEEXT +echo "$as_me:$LINENO: checking for suffix of object files" >&5 +echo $ECHO_N "checking for suffix of object files... $ECHO_C" >&6 +if test "${ac_cv_objext+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.o conftest.obj +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; then + for ac_file in `(ls conftest.o conftest.obj; ls conftest.*) 2>/dev/null`; do + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg ) ;; + *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'` + break;; + esac +done +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { echo "$as_me:$LINENO: error: cannot compute suffix of object files: cannot compile +See \`config.log' for more details." >&5 +echo "$as_me: error: cannot compute suffix of object files: cannot compile +See \`config.log' for more details." >&2;} + { (exit 1); exit 1; }; } +fi + +rm -f conftest.$ac_cv_objext conftest.$ac_ext +fi +echo "$as_me:$LINENO: result: $ac_cv_objext" >&5 +echo "${ECHO_T}$ac_cv_objext" >&6 +OBJEXT=$ac_cv_objext +ac_objext=$OBJEXT +echo "$as_me:$LINENO: checking whether we are using the GNU C compiler" >&5 +echo $ECHO_N "checking whether we are using the GNU C compiler... $ECHO_C" >&6 +if test "${ac_cv_c_compiler_gnu+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +int +main () +{ +#ifndef __GNUC__ + choke me +#endif + + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_compiler_gnu=yes +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +ac_compiler_gnu=no +fi +rm -f conftest.err conftest.$ac_objext conftest.$ac_ext +ac_cv_c_compiler_gnu=$ac_compiler_gnu + +fi +echo "$as_me:$LINENO: result: $ac_cv_c_compiler_gnu" >&5 +echo "${ECHO_T}$ac_cv_c_compiler_gnu" >&6 +GCC=`test $ac_compiler_gnu = yes && echo yes` +ac_test_CFLAGS=${CFLAGS+set} +ac_save_CFLAGS=$CFLAGS +CFLAGS="-g" +echo "$as_me:$LINENO: checking whether $CC accepts -g" >&5 +echo $ECHO_N "checking whether $CC accepts -g... $ECHO_C" >&6 +if test "${ac_cv_prog_cc_g+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_prog_cc_g=yes +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +ac_cv_prog_cc_g=no +fi +rm -f conftest.err conftest.$ac_objext conftest.$ac_ext +fi +echo "$as_me:$LINENO: result: $ac_cv_prog_cc_g" >&5 +echo "${ECHO_T}$ac_cv_prog_cc_g" >&6 +if test "$ac_test_CFLAGS" = set; then + CFLAGS=$ac_save_CFLAGS +elif test $ac_cv_prog_cc_g = yes; then + if test "$GCC" = yes; then + CFLAGS="-g -O2" + else + CFLAGS="-g" + fi +else + if test "$GCC" = yes; then + CFLAGS="-O2" + else + CFLAGS= + fi +fi +echo "$as_me:$LINENO: checking for $CC option to accept ANSI C" >&5 +echo $ECHO_N "checking for $CC option to accept ANSI C... $ECHO_C" >&6 +if test "${ac_cv_prog_cc_stdc+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + ac_cv_prog_cc_stdc=no +ac_save_CC=$CC +cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ +#include +#include +#include +#include +/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */ +struct buf { int x; }; +FILE * (*rcsopen) (struct buf *, struct stat *, int); +static char *e (p, i) + char **p; + int i; +{ + return p[i]; +} +static char *f (char * (*g) (char **, int), char **p, ...) +{ + char *s; + va_list v; + va_start (v,p); + s = g (p, va_arg (v,int)); + va_end (v); + return s; +} + +/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has + function prototypes and stuff, but not '\xHH' hex character constants. + These don't provoke an error unfortunately, instead are silently treated + as 'x'. The following induces an error, until -std1 is added to get + proper ANSI mode. Curiously '\x00'!='x' always comes out true, for an + array size at least. It's necessary to write '\x00'==0 to get something + that's true only with -std1. */ +int osf4_cc_array ['\x00' == 0 ? 1 : -1]; + +int test (int i, double x); +struct s1 {int (*f) (int a);}; +struct s2 {int (*f) (double a);}; +int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int); +int argc; +char **argv; +int +main () +{ +return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]; + ; + return 0; +} +_ACEOF +# Don't try gcc -ansi; that turns off useful extensions and +# breaks some systems' header files. +# AIX -qlanglvl=ansi +# Ultrix and OSF/1 -std1 +# HP-UX 10.20 and later -Ae +# HP-UX older versions -Aa -D_HPUX_SOURCE +# SVR4 -Xc -D__EXTENSIONS__ +for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__" +do + CC="$ac_save_CC $ac_arg" + rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_prog_cc_stdc=$ac_arg +break +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +fi +rm -f conftest.err conftest.$ac_objext +done +rm -f conftest.$ac_ext conftest.$ac_objext +CC=$ac_save_CC + +fi + +case "x$ac_cv_prog_cc_stdc" in + x|xno) + echo "$as_me:$LINENO: result: none needed" >&5 +echo "${ECHO_T}none needed" >&6 ;; + *) + echo "$as_me:$LINENO: result: $ac_cv_prog_cc_stdc" >&5 +echo "${ECHO_T}$ac_cv_prog_cc_stdc" >&6 + CC="$CC $ac_cv_prog_cc_stdc" ;; +esac + +# Some people use a C++ compiler to compile C. Since we use `exit', +# in C++ we need to declare it. In case someone uses the same compiler +# for both compiling C and C++ we need to have the C++ compiler decide +# the declaration of exit, since it's the most demanding environment. +cat >conftest.$ac_ext <<_ACEOF +#ifndef __cplusplus + choke me +#endif +_ACEOF +rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + for ac_declaration in \ + '' \ + 'extern "C" void std::exit (int) throw (); using std::exit;' \ + 'extern "C" void std::exit (int); using std::exit;' \ + 'extern "C" void exit (int) throw ();' \ + 'extern "C" void exit (int);' \ + 'void exit (int);' +do + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ +$ac_declaration +#include +int +main () +{ +exit (42); + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + : +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +continue +fi +rm -f conftest.err conftest.$ac_objext conftest.$ac_ext + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ +$ac_declaration +int +main () +{ +exit (42); + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + break +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +fi +rm -f conftest.err conftest.$ac_objext conftest.$ac_ext +done +rm -f conftest* +if test -n "$ac_declaration"; then + echo '#ifdef __cplusplus' >>confdefs.h + echo $ac_declaration >>confdefs.h + echo '#endif' >>confdefs.h +fi + +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +fi +rm -f conftest.err conftest.$ac_objext conftest.$ac_ext +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + +ac_aux_dir= +for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do + if test -f $ac_dir/install-sh; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/install-sh -c" + break + elif test -f $ac_dir/install.sh; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/install.sh -c" + break + elif test -f $ac_dir/shtool; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/shtool install -c" + break + fi +done +if test -z "$ac_aux_dir"; then + { { echo "$as_me:$LINENO: error: cannot find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." >&5 +echo "$as_me: error: cannot find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." >&2;} + { (exit 1); exit 1; }; } +fi +ac_config_guess="$SHELL $ac_aux_dir/config.guess" +ac_config_sub="$SHELL $ac_aux_dir/config.sub" +ac_configure="$SHELL $ac_aux_dir/configure" # This should be Cygnus configure. + +# Find a good install program. We prefer a C program (faster), +# so one script is as good as another. But avoid the broken or +# incompatible versions: +# SysV /etc/install, /usr/sbin/install +# SunOS /usr/etc/install +# IRIX /sbin/install +# AIX /bin/install +# AmigaOS /C/install, which installs bootblocks on floppy discs +# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag +# AFS /usr/afsws/bin/install, which mishandles nonexistent args +# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" +# OS/2's system install, which has a completely different semantic +# ./install, which can be erroneously created by make from ./install.sh. +echo "$as_me:$LINENO: checking for a BSD-compatible install" >&5 +echo $ECHO_N "checking for a BSD-compatible install... $ECHO_C" >&6 +if test -z "$INSTALL"; then +if test "${ac_cv_path_install+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + # Account for people who put trailing slashes in PATH elements. +case $as_dir/ in + ./ | .// | /cC/* | \ + /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \ + ?:\\/os2\\/install\\/* | ?:\\/OS2\\/INSTALL\\/* | \ + /usr/ucb/* ) ;; + *) + # OSF1 and SCO ODT 3.0 have their own names for install. + # Don't use installbsd from OSF since it installs stuff as root + # by default. + for ac_prog in ginstall scoinst install; do + for ac_exec_ext in '' $ac_executable_extensions; do + if $as_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then + if test $ac_prog = install && + grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then + # AIX install. It has an incompatible calling convention. + : + elif test $ac_prog = install && + grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then + # program-specific install script used by HP pwplus--don't use. + : + else + ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c" + break 3 + fi + fi + done + done + ;; +esac +done + + +fi + if test "${ac_cv_path_install+set}" = set; then + INSTALL=$ac_cv_path_install + else + # As a last resort, use the slow shell script. We don't cache a + # path for INSTALL within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the path is relative. + INSTALL=$ac_install_sh + fi +fi +echo "$as_me:$LINENO: result: $INSTALL" >&5 +echo "${ECHO_T}$INSTALL" >&6 + +# Use test -z because SunOS4 sh mishandles braces in ${var-val}. +# It thinks the first close brace ends the variable substitution. +test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' + +test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}' + +test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' + + + +echo "$as_me:$LINENO: checking for an ANSI C-conforming const" >&5 +echo $ECHO_N "checking for an ANSI C-conforming const... $ECHO_C" >&6 +if test "${ac_cv_c_const+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +int +main () +{ +/* FIXME: Include the comments suggested by Paul. */ +#ifndef __cplusplus + /* Ultrix mips cc rejects this. */ + typedef int charset[2]; + const charset x; + /* SunOS 4.1.1 cc rejects this. */ + char const *const *ccp; + char **p; + /* NEC SVR4.0.2 mips cc rejects this. */ + struct point {int x, y;}; + static struct point const zero = {0,0}; + /* AIX XL C 1.02.0.0 rejects this. + It does not let you subtract one const X* pointer from another in + an arm of an if-expression whose if-part is not a constant + expression */ + const char *g = "string"; + ccp = &g + (g ? g-g : 0); + /* HPUX 7.0 cc rejects these. */ + ++ccp; + p = (char**) ccp; + ccp = (char const *const *) p; + { /* SCO 3.2v4 cc rejects this. */ + char *t; + char const *s = 0 ? (char *) 0 : (char const *) 0; + + *t++ = 0; + } + { /* Someone thinks the Sun supposedly-ANSI compiler will reject this. */ + int x[] = {25, 17}; + const int *foo = &x[0]; + ++foo; + } + { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */ + typedef const int *iptr; + iptr p = 0; + ++p; + } + { /* AIX XL C 1.02.0.0 rejects this saying + "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */ + struct s { int j; const int *ap[3]; }; + struct s *b; b->j = 5; + } + { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */ + const int foo = 10; + } +#endif + + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_c_const=yes +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +ac_cv_c_const=no +fi +rm -f conftest.err conftest.$ac_objext conftest.$ac_ext +fi +echo "$as_me:$LINENO: result: $ac_cv_c_const" >&5 +echo "${ECHO_T}$ac_cv_c_const" >&6 +if test $ac_cv_c_const = no; then + +cat >>confdefs.h <<\_ACEOF +#define const +_ACEOF + +fi + +echo "$as_me:$LINENO: checking for inline" >&5 +echo $ECHO_N "checking for inline... $ECHO_C" >&6 +if test "${ac_cv_c_inline+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + ac_cv_c_inline=no +for ac_kw in inline __inline__ __inline; do + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ +#ifndef __cplusplus +typedef int foo_t; +static $ac_kw foo_t static_foo () {return 0; } +$ac_kw foo_t foo () {return 0; } +#endif + +_ACEOF +rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_c_inline=$ac_kw; break +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +fi +rm -f conftest.err conftest.$ac_objext conftest.$ac_ext +done + +fi +echo "$as_me:$LINENO: result: $ac_cv_c_inline" >&5 +echo "${ECHO_T}$ac_cv_c_inline" >&6 + + +case $ac_cv_c_inline in + inline | yes) ;; + *) + case $ac_cv_c_inline in + no) ac_val=;; + *) ac_val=$ac_cv_c_inline;; + esac + cat >>confdefs.h <<_ACEOF +#ifndef __cplusplus +#define inline $ac_val +#endif +_ACEOF + ;; +esac + + +##################################################################### +## +## libm check +## +##################################################################### +M="No " +echo "$as_me:$LINENO: checking for pow in -lm" >&5 +echo $ECHO_N "checking for pow in -lm... $ECHO_C" >&6 +if test "${ac_cv_lib_m_pow+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-lm $LIBS" +cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +/* Override any gcc2 internal prototype to avoid an error. */ +#ifdef __cplusplus +extern "C" +#endif +/* We use char because int might match the return type of a gcc2 + builtin and then its argument prototype would still apply. */ +char pow (); +int +main () +{ +pow (); + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext conftest$ac_exeext +if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5 + (eval $ac_link) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest$ac_exeext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_lib_m_pow=yes +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +ac_cv_lib_m_pow=no +fi +rm -f conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +echo "$as_me:$LINENO: result: $ac_cv_lib_m_pow" >&5 +echo "${ECHO_T}$ac_cv_lib_m_pow" >&6 +if test $ac_cv_lib_m_pow = yes; then + + LIBM="-lm" + M="Yes" + +else + + echo + echo "*** Error: libm required ***" + echo + exit + +fi + + +##################################################################### +## +## verbose error strings +## +##################################################################### +# Check whether --enable-verbose-errors or --disable-verbose-errors was given. +if test "${enable_verbose_errors+set}" = set; then + enableval="$enable_verbose_errors" + + if test x$enableval = xyes; then + +cat >>confdefs.h <<_ACEOF +#define VERBOSE_ERRORS "1" +_ACEOF + + fi + +fi; + +##################################################################### +## +## compile decisions +## +##################################################################### +COMPILE_LIBNL="Yes " +LIBNL_LIB="$LIBM" + + + + ac_config_files="$ac_config_files Makefile.opts libnl-1.pc" +cat >confcache <<\_ACEOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs, see configure's option --config-cache. +# It is not useful on other systems. If it contains results you don't +# want to keep, you may remove or edit it. +# +# config.status only pays attention to the cache file if you give it +# the --recheck option to rerun configure. +# +# `ac_cv_env_foo' variables (set or unset) will be overridden when +# loading this file, other *unset* `ac_cv_foo' will be assigned the +# following values. + +_ACEOF + +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, don't put newlines in cache variables' values. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +{ + (set) 2>&1 | + case `(ac_space=' '; set | grep ac_space) 2>&1` in + *ac_space=\ *) + # `set' does not quote correctly, so add quotes (double-quote + # substitution turns \\\\ into \\, and sed turns \\ into \). + sed -n \ + "s/'/'\\\\''/g; + s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p" + ;; + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n \ + "s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p" + ;; + esac; +} | + sed ' + t clear + : clear + s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/ + t end + /^ac_cv_env/!s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/ + : end' >>confcache +if diff $cache_file confcache >/dev/null 2>&1; then :; else + if test -w $cache_file; then + test "x$cache_file" != "x/dev/null" && echo "updating cache $cache_file" + cat confcache >$cache_file + else + echo "not updating unwritable cache $cache_file" + fi +fi +rm -f confcache + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +# VPATH may cause trouble with some makes, so we remove $(srcdir), +# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and +# trailing colons and then remove the whole line if VPATH becomes empty +# (actually we leave an empty line to preserve line numbers). +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=/{ +s/:*\$(srcdir):*/:/; +s/:*\${srcdir}:*/:/; +s/:*@srcdir@:*/:/; +s/^\([^=]*=[ ]*\):*/\1/; +s/:*$//; +s/^[^=]*=[ ]*$//; +}' +fi + +DEFS=-DHAVE_CONFIG_H + +ac_libobjs= +ac_ltlibobjs= +for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue + # 1. 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Invocation command line was + + CONFIG_FILES = $CONFIG_FILES + CONFIG_HEADERS = $CONFIG_HEADERS + CONFIG_LINKS = $CONFIG_LINKS + CONFIG_COMMANDS = $CONFIG_COMMANDS + $ $0 $@ + +_CSEOF +echo "on `(hostname || uname -n) 2>/dev/null | sed 1q`" >&5 +echo >&5 +_ACEOF + +# Files that config.status was made for. +if test -n "$ac_config_files"; then + echo "config_files=\"$ac_config_files\"" >>$CONFIG_STATUS +fi + +if test -n "$ac_config_headers"; then + echo "config_headers=\"$ac_config_headers\"" >>$CONFIG_STATUS +fi + +if test -n "$ac_config_links"; then + echo "config_links=\"$ac_config_links\"" >>$CONFIG_STATUS +fi + +if test -n "$ac_config_commands"; then + echo "config_commands=\"$ac_config_commands\"" >>$CONFIG_STATUS +fi + +cat >>$CONFIG_STATUS <<\_ACEOF + +ac_cs_usage="\ +\`$as_me' instantiates files from templates according to the +current configuration. + +Usage: $0 [OPTIONS] [FILE]... + + -h, --help print this help, then exit + -V, --version print version number, then exit + -q, --quiet do not print progress messages + -d, --debug don't remove temporary files + --recheck update $as_me by reconfiguring in the same conditions + --file=FILE[:TEMPLATE] + instantiate the configuration file FILE + --header=FILE[:TEMPLATE] + instantiate the configuration header FILE + +Configuration files: +$config_files + +Configuration headers: +$config_headers + +Report bugs to ." +_ACEOF + +cat >>$CONFIG_STATUS <<_ACEOF +ac_cs_version="\\ +libnl config.status 1.0-pre6 +configured by $0, generated by GNU Autoconf 2.59, + with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\" + +Copyright (C) 2003 Free Software Foundation, Inc. +This config.status script is free software; the Free Software Foundation +gives unlimited permission to copy, distribute and modify it." +srcdir=$srcdir +INSTALL="$INSTALL" +_ACEOF + +cat >>$CONFIG_STATUS <<\_ACEOF +# If no file are specified by the user, then we need to provide default +# value. By we need to know if files were specified by the user. +ac_need_defaults=: +while test $# != 0 +do + case $1 in + --*=*) + ac_option=`expr "x$1" : 'x\([^=]*\)='` + ac_optarg=`expr "x$1" : 'x[^=]*=\(.*\)'` + ac_shift=: + ;; + -*) + ac_option=$1 + ac_optarg=$2 + ac_shift=shift + ;; + *) # This is not an option, so the user has probably given explicit + # arguments. + ac_option=$1 + ac_need_defaults=false;; + esac + + case $ac_option in + # Handling of the options. +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF + -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r) + ac_cs_recheck=: ;; + --version | --vers* | -V ) + echo "$ac_cs_version"; exit 0 ;; + --he | --h) + # Conflict between --help and --header + { { echo "$as_me:$LINENO: error: ambiguous option: $1 +Try \`$0 --help' for more information." >&5 +echo "$as_me: error: ambiguous option: $1 +Try \`$0 --help' for more information." >&2;} + { (exit 1); exit 1; }; };; + --help | --hel | -h ) + echo "$ac_cs_usage"; exit 0 ;; + --debug | --d* | -d ) + debug=: ;; + --file | --fil | --fi | --f ) + $ac_shift + CONFIG_FILES="$CONFIG_FILES $ac_optarg" + ac_need_defaults=false;; + --header | --heade | --head | --hea ) + $ac_shift + CONFIG_HEADERS="$CONFIG_HEADERS $ac_optarg" + ac_need_defaults=false;; + -q | -quiet | --quiet | --quie | --qui | --qu | --q \ + | -silent | --silent | --silen | --sile | --sil | --si | --s) + ac_cs_silent=: ;; + + # This is an error. + -*) { { echo "$as_me:$LINENO: error: unrecognized option: $1 +Try \`$0 --help' for more information." >&5 +echo "$as_me: error: unrecognized option: $1 +Try \`$0 --help' for more information." >&2;} + { (exit 1); exit 1; }; } ;; + + *) ac_config_targets="$ac_config_targets $1" ;; + + esac + shift +done + +ac_configure_extra_args= + +if $ac_cs_silent; then + exec 6>/dev/null + ac_configure_extra_args="$ac_configure_extra_args --silent" +fi + +_ACEOF +cat >>$CONFIG_STATUS <<_ACEOF +if \$ac_cs_recheck; then + echo "running $SHELL $0 " $ac_configure_args \$ac_configure_extra_args " --no-create --no-recursion" >&6 + exec $SHELL $0 $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion +fi + +_ACEOF + + + + + +cat >>$CONFIG_STATUS <<\_ACEOF +for ac_config_target in $ac_config_targets +do + case "$ac_config_target" in + # Handling of arguments. + "Makefile.opts" ) CONFIG_FILES="$CONFIG_FILES Makefile.opts" ;; + "libnl-1.pc" ) CONFIG_FILES="$CONFIG_FILES libnl-1.pc" ;; + "lib/defs.h" ) CONFIG_HEADERS="$CONFIG_HEADERS lib/defs.h" ;; + *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5 +echo "$as_me: error: invalid argument: $ac_config_target" >&2;} + { (exit 1); exit 1; }; };; + esac +done + +# If the user did not use the arguments to specify the items to instantiate, +# then the envvar interface is used. Set only those that are not. +# We use the long form for the default assignment because of an extremely +# bizarre bug on SunOS 4.1.3. +if $ac_need_defaults; then + test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files + test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers +fi + +# Have a temporary directory for convenience. Make it in the build tree +# simply because there is no reason to put it here, and in addition, +# creating and moving files from /tmp can sometimes cause problems. +# Create a temporary directory, and hook for its removal unless debugging. +$debug || +{ + trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0 + trap '{ (exit 1); exit 1; }' 1 2 13 15 +} + +# Create a (secure) tmp directory for tmp files. + +{ + tmp=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` && + test -n "$tmp" && test -d "$tmp" +} || +{ + tmp=./confstat$$-$RANDOM + (umask 077 && mkdir $tmp) +} || +{ + echo "$me: cannot create a temporary directory in ." >&2 + { (exit 1); exit 1; } +} + +_ACEOF + +cat >>$CONFIG_STATUS <<_ACEOF + +# +# CONFIG_FILES section. +# + +# No need to generate the scripts if there are no CONFIG_FILES. +# This happens for instance when ./config.status config.h +if test -n "\$CONFIG_FILES"; then + # Protect against being on the right side of a sed subst in config.status. + sed 's/,@/@@/; s/@,/@@/; s/,;t t\$/@;t t/; /@;t t\$/s/[\\\\&,]/\\\\&/g; + s/@@/,@/; s/@@/@,/; s/@;t t\$/,;t t/' >\$tmp/subs.sed <<\\CEOF +s,@SHELL@,$SHELL,;t t +s,@PATH_SEPARATOR@,$PATH_SEPARATOR,;t t +s,@PACKAGE_NAME@,$PACKAGE_NAME,;t t +s,@PACKAGE_TARNAME@,$PACKAGE_TARNAME,;t t +s,@PACKAGE_VERSION@,$PACKAGE_VERSION,;t t +s,@PACKAGE_STRING@,$PACKAGE_STRING,;t t +s,@PACKAGE_BUGREPORT@,$PACKAGE_BUGREPORT,;t t +s,@exec_prefix@,$exec_prefix,;t t +s,@prefix@,$prefix,;t t +s,@program_transform_name@,$program_transform_name,;t t +s,@bindir@,$bindir,;t t +s,@sbindir@,$sbindir,;t t +s,@libexecdir@,$libexecdir,;t t +s,@datadir@,$datadir,;t t +s,@sysconfdir@,$sysconfdir,;t t +s,@sharedstatedir@,$sharedstatedir,;t t +s,@localstatedir@,$localstatedir,;t t +s,@libdir@,$libdir,;t t +s,@includedir@,$includedir,;t t +s,@oldincludedir@,$oldincludedir,;t t +s,@infodir@,$infodir,;t t +s,@mandir@,$mandir,;t t +s,@build_alias@,$build_alias,;t t +s,@host_alias@,$host_alias,;t t +s,@target_alias@,$target_alias,;t t +s,@DEFS@,$DEFS,;t t +s,@ECHO_C@,$ECHO_C,;t t +s,@ECHO_N@,$ECHO_N,;t t +s,@ECHO_T@,$ECHO_T,;t t +s,@LIBS@,$LIBS,;t t +s,@CC@,$CC,;t t +s,@CFLAGS@,$CFLAGS,;t t +s,@LDFLAGS@,$LDFLAGS,;t t +s,@CPPFLAGS@,$CPPFLAGS,;t t +s,@ac_ct_CC@,$ac_ct_CC,;t t +s,@EXEEXT@,$EXEEXT,;t t +s,@OBJEXT@,$OBJEXT,;t t +s,@INSTALL_PROGRAM@,$INSTALL_PROGRAM,;t t +s,@INSTALL_SCRIPT@,$INSTALL_SCRIPT,;t t +s,@INSTALL_DATA@,$INSTALL_DATA,;t t +s,@LIBNL_LIB@,$LIBNL_LIB,;t t +s,@LIBOBJS@,$LIBOBJS,;t t +s,@LTLIBOBJS@,$LTLIBOBJS,;t t +CEOF + +_ACEOF + + cat >>$CONFIG_STATUS <<\_ACEOF + # Split the substitutions into bite-sized pieces for seds with + # small command number limits, like on Digital OSF/1 and HP-UX. + ac_max_sed_lines=48 + ac_sed_frag=1 # Number of current file. + ac_beg=1 # First line for current file. + ac_end=$ac_max_sed_lines # Line after last line for current file. + ac_more_lines=: + ac_sed_cmds= + while $ac_more_lines; do + if test $ac_beg -gt 1; then + sed "1,${ac_beg}d; ${ac_end}q" $tmp/subs.sed >$tmp/subs.frag + else + sed "${ac_end}q" $tmp/subs.sed >$tmp/subs.frag + fi + if test ! -s $tmp/subs.frag; then + ac_more_lines=false + else + # The purpose of the label and of the branching condition is to + # speed up the sed processing (if there are no `@' at all, there + # is no need to browse any of the substitutions). + # These are the two extra sed commands mentioned above. + (echo ':t + /@[a-zA-Z_][a-zA-Z_0-9]*@/!b' && cat $tmp/subs.frag) >$tmp/subs-$ac_sed_frag.sed + if test -z "$ac_sed_cmds"; then + ac_sed_cmds="sed -f $tmp/subs-$ac_sed_frag.sed" + else + ac_sed_cmds="$ac_sed_cmds | sed -f $tmp/subs-$ac_sed_frag.sed" + fi + ac_sed_frag=`expr $ac_sed_frag + 1` + ac_beg=$ac_end + ac_end=`expr $ac_end + $ac_max_sed_lines` + fi + done + if test -z "$ac_sed_cmds"; then + ac_sed_cmds=cat + fi +fi # test -n "$CONFIG_FILES" + +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF +for ac_file in : $CONFIG_FILES; do test "x$ac_file" = x: && continue + # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in". + case $ac_file in + - | *:- | *:-:* ) # input from stdin + cat >$tmp/stdin + ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'` + ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;; + *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'` + ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;; + * ) ac_file_in=$ac_file.in ;; + esac + + # Compute @srcdir@, @top_srcdir@, and @INSTALL@ for subdirectories. + ac_dir=`(dirname "$ac_file") 2>/dev/null || +$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$ac_file" : 'X\(//\)[^/]' \| \ + X"$ac_file" : 'X\(//\)$' \| \ + X"$ac_file" : 'X\(/\)' \| \ + . : '\(.\)' 2>/dev/null || +echo X"$ac_file" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; } + /^X\(\/\/\)[^/].*/{ s//\1/; q; } + /^X\(\/\/\)$/{ s//\1/; q; } + /^X\(\/\).*/{ s//\1/; q; } + s/.*/./; q'` + { if $as_mkdir_p; then + mkdir -p "$ac_dir" + else + as_dir="$ac_dir" + as_dirs= + while test ! 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The first handles `#define' +# templates, and the second `#undef' templates. +# And first: Protect against being on the right side of a sed subst in +# config.status. Protect against being in an unquoted here document +# in config.status. +rm -f conftest.defines conftest.undefs +# Using a here document instead of a string reduces the quoting nightmare. +# Putting comments in sed scripts is not portable. +# +# `end' is used to avoid that the second main sed command (meant for +# 0-ary CPP macros) applies to n-ary macro definitions. +# See the Autoconf documentation for `clear'. +cat >confdef2sed.sed <<\_ACEOF +s/[\\&,]/\\&/g +s,[\\$`],\\&,g +t clear +: clear +s,^[ ]*#[ ]*define[ ][ ]*\([^ (][^ (]*\)\(([^)]*)\)[ ]*\(.*\)$,${ac_dA}\1${ac_dB}\1\2${ac_dC}\3${ac_dD},gp +t end +s,^[ ]*#[ ]*define[ ][ ]*\([^ ][^ ]*\)[ ]*\(.*\)$,${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD},gp +: end +_ACEOF +# If some macros were called several times there might be several times +# the same #defines, which is useless. Nevertheless, we may not want to +# sort them, since we want the *last* AC-DEFINE to be honored. +uniq confdefs.h | sed -n -f confdef2sed.sed >conftest.defines +sed 's/ac_d/ac_u/g' conftest.defines >conftest.undefs +rm -f confdef2sed.sed + +# This sed command replaces #undef with comments. This is necessary, for +# example, in the case of _POSIX_SOURCE, which is predefined and required +# on some systems where configure will not decide to define it. +cat >>conftest.undefs <<\_ACEOF +s,^[ ]*#[ ]*undef[ ][ ]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */, +_ACEOF + +# Break up conftest.defines because some shells have a limit on the size +# of here documents, and old seds have small limits too (100 cmds). +echo ' # Handle all the #define templates only if necessary.' >>$CONFIG_STATUS +echo ' if grep "^[ ]*#[ ]*define" $tmp/in >/dev/null; then' >>$CONFIG_STATUS +echo ' # If there are no defines, we may have an empty if/fi' >>$CONFIG_STATUS +echo ' :' >>$CONFIG_STATUS +rm -f conftest.tail +while grep . conftest.defines >/dev/null +do + # Write a limited-size here document to $tmp/defines.sed. + echo ' cat >$tmp/defines.sed <>$CONFIG_STATUS + # Speed up: don't consider the non `#define' lines. + echo '/^[ ]*#[ ]*define/!b' >>$CONFIG_STATUS + # Work around the forget-to-reset-the-flag bug. + echo 't clr' >>$CONFIG_STATUS + echo ': clr' >>$CONFIG_STATUS + sed ${ac_max_here_lines}q conftest.defines >>$CONFIG_STATUS + echo 'CEOF + sed -f $tmp/defines.sed $tmp/in >$tmp/out + rm -f $tmp/in + mv $tmp/out $tmp/in +' >>$CONFIG_STATUS + sed 1,${ac_max_here_lines}d conftest.defines >conftest.tail + rm -f conftest.defines + mv conftest.tail conftest.defines +done +rm -f conftest.defines +echo ' fi # grep' >>$CONFIG_STATUS +echo >>$CONFIG_STATUS + +# Break up conftest.undefs because some shells have a limit on the size +# of here documents, and old seds have small limits too (100 cmds). +echo ' # Handle all the #undef templates' >>$CONFIG_STATUS +rm -f conftest.tail +while grep . conftest.undefs >/dev/null +do + # Write a limited-size here document to $tmp/undefs.sed. + echo ' cat >$tmp/undefs.sed <>$CONFIG_STATUS + # Speed up: don't consider the non `#undef' + echo '/^[ ]*#[ ]*undef/!b' >>$CONFIG_STATUS + # Work around the forget-to-reset-the-flag bug. + echo 't clr' >>$CONFIG_STATUS + echo ': clr' >>$CONFIG_STATUS + sed ${ac_max_here_lines}q conftest.undefs >>$CONFIG_STATUS + echo 'CEOF + sed -f $tmp/undefs.sed $tmp/in >$tmp/out + rm -f $tmp/in + mv $tmp/out $tmp/in +' >>$CONFIG_STATUS + sed 1,${ac_max_here_lines}d conftest.undefs >conftest.tail + rm -f conftest.undefs + mv conftest.tail conftest.undefs +done +rm -f conftest.undefs + +cat >>$CONFIG_STATUS <<\_ACEOF + # Let's still pretend it is `configure' which instantiates (i.e., don't + # use $as_me), people would be surprised to read: + # /* config.h. Generated by config.status. */ + if test x"$ac_file" = x-; then + echo "/* Generated by configure. */" >$tmp/config.h + else + echo "/* $ac_file. Generated by configure. */" >$tmp/config.h + fi + cat $tmp/in >>$tmp/config.h + rm -f $tmp/in + if test x"$ac_file" != x-; then + if diff $ac_file $tmp/config.h >/dev/null 2>&1; then + { echo "$as_me:$LINENO: $ac_file is unchanged" >&5 +echo "$as_me: $ac_file is unchanged" >&6;} + else + ac_dir=`(dirname "$ac_file") 2>/dev/null || +$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$ac_file" : 'X\(//\)[^/]' \| \ + X"$ac_file" : 'X\(//\)$' \| \ + X"$ac_file" : 'X\(/\)' \| \ + . : '\(.\)' 2>/dev/null || +echo X"$ac_file" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; } + /^X\(\/\/\)[^/].*/{ s//\1/; q; } + /^X\(\/\/\)$/{ s//\1/; q; } + /^X\(\/\).*/{ s//\1/; q; } + s/.*/./; q'` + { if $as_mkdir_p; then + mkdir -p "$ac_dir" + else + as_dir="$ac_dir" + as_dirs= + while test ! -d "$as_dir"; do + as_dirs="$as_dir $as_dirs" + as_dir=`(dirname "$as_dir") 2>/dev/null || +$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$as_dir" : 'X\(//\)[^/]' \| \ + X"$as_dir" : 'X\(//\)$' \| \ + X"$as_dir" : 'X\(/\)' \| \ + . : '\(.\)' 2>/dev/null || +echo X"$as_dir" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; } + /^X\(\/\/\)[^/].*/{ s//\1/; q; } + /^X\(\/\/\)$/{ s//\1/; q; } + /^X\(\/\).*/{ s//\1/; q; } + s/.*/./; q'` + done + test ! -n "$as_dirs" || mkdir $as_dirs + fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5 +echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;} + { (exit 1); exit 1; }; }; } + + rm -f $ac_file + mv $tmp/config.h $ac_file + fi + else + cat $tmp/config.h + rm -f $tmp/config.h + fi +done +_ACEOF + +cat >>$CONFIG_STATUS <<\_ACEOF + +{ (exit 0); exit 0; } +_ACEOF +chmod +x $CONFIG_STATUS +ac_clean_files=$ac_clean_files_save + + +# configure is writing to config.log, and then calls config.status. +# config.status does its own redirection, appending to config.log. +# Unfortunately, on DOS this fails, as config.log is still kept open +# by configure, so config.status won't be able to write to it; its +# output is simply discarded. So we exec the FD to /dev/null, +# effectively closing config.log, so it can be properly (re)opened and +# appended to by config.status. When coming back to configure, we +# need to make the FD available again. +if test "$no_create" != yes; then + ac_cs_success=: + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false + exec 5>>config.log + # Use ||, not &&, to avoid exiting from the if with $? = 1, which + # would make configure fail if this is the last instruction. + $ac_cs_success || { (exit 1); exit 1; } +fi + + +##################################################################### +## +## status report +## +##################################################################### +echo " +---------------------------------------------------------------------- +SUMMARY: + +Included in Compilation: + libnl: $COMPILE_LIBNL $LIBNL_LIB + +Dependencies: +bmon: + libm $M (required)" diff --git a/configure.in b/configure.in new file mode 100644 index 0000000..68aa586 --- /dev/null +++ b/configure.in @@ -0,0 +1,80 @@ +# +# configure.in +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation version 2.1 +# of the License. +# +# Copyright (c) 2003-2006 Thomas Graf +# + +AC_INIT(libnl, 1.0-pre6, tgraf@suug.ch) +AC_CONFIG_HEADER(lib/defs.h) + +save_CFLAGS="${CFLAGS}" +save_LDFLAGS="${LDFLAGS}" +save_CPPFLAGS="${CPPFLAGS}" + +AC_PROG_CC +AC_PROG_INSTALL + +AC_C_CONST +AC_C_INLINE + +##################################################################### +## +## libm check +## +##################################################################### +M="No " +AC_CHECK_LIB(m, pow, +[ + LIBM="-lm" + M="Yes" +],[ + echo + echo "*** Error: libm required ***" + echo + exit +]) + +##################################################################### +## +## verbose error strings +## +##################################################################### +AC_ARG_ENABLE(verbose-errors, +[ --enable-verbose-errors enable verbose errors (debugging)],[ + if test x$enableval = xyes; then + AC_DEFINE_UNQUOTED(VERBOSE_ERRORS,"1",[verbose errors]) + fi +]) + +##################################################################### +## +## compile decisions +## +##################################################################### +COMPILE_LIBNL="Yes " +LIBNL_LIB="$LIBM" + +AC_SUBST(LIBNL_LIB) + +AC_OUTPUT([Makefile.opts libnl-1.pc]) + +##################################################################### +## +## status report +## +##################################################################### +echo " +---------------------------------------------------------------------- +SUMMARY: + +Included in Compilation: + libnl: $COMPILE_LIBNL $LIBNL_LIB + +Dependencies: +bmon: + libm $M (required)" diff --git a/doc/Doxyfile b/doc/Doxyfile new file mode 100644 index 0000000..80d3a82 --- /dev/null +++ b/doc/Doxyfile @@ -0,0 +1,224 @@ +# Doxyfile 0.1 + +#--------------------------------------------------------------------------- +# Project related configuration options +#--------------------------------------------------------------------------- +PROJECT_NAME = libnl +PROJECT_NUMBER = 1.0-pre2 +OUTPUT_DIRECTORY = ./ +CREATE_SUBDIRS = NO +OUTPUT_LANGUAGE = English +USE_WINDOWS_ENCODING = NO +BRIEF_MEMBER_DESC = YES +REPEAT_BRIEF = YES +ABBREVIATE_BRIEF = +ALWAYS_DETAILED_SEC = YES +INLINE_INHERITED_MEMB = YES +FULL_PATH_NAMES = YES +STRIP_FROM_PATH = +STRIP_FROM_INC_PATH = +SHORT_NAMES = NO +JAVADOC_AUTOBRIEF = YES +MULTILINE_CPP_IS_BRIEF = NO +DETAILS_AT_TOP = YES +INHERIT_DOCS = YES +DISTRIBUTE_GROUP_DOC = YES +SEPARATE_MEMBER_PAGES = NO +TAB_SIZE = 8 +ALIASES = arg=\param +OPTIMIZE_OUTPUT_FOR_C = YES +OPTIMIZE_OUTPUT_JAVA = NO +SUBGROUPING = YES +#--------------------------------------------------------------------------- +# Build related configuration options +#--------------------------------------------------------------------------- +EXTRACT_ALL = NO +EXTRACT_PRIVATE = YES +EXTRACT_STATIC = NO +EXTRACT_LOCAL_CLASSES = YES +EXTRACT_LOCAL_METHODS = YES +HIDE_UNDOC_MEMBERS = NO +HIDE_UNDOC_CLASSES = NO +HIDE_FRIEND_COMPOUNDS = NO +HIDE_IN_BODY_DOCS = NO +INTERNAL_DOCS = NO +CASE_SENSE_NAMES = YES +HIDE_SCOPE_NAMES = NO +SHOW_INCLUDE_FILES = YES +INLINE_INFO = YES +SORT_MEMBER_DOCS = NO +SORT_BRIEF_DOCS = NO +SORT_BY_SCOPE_NAME = NO +GENERATE_TODOLIST = NO +GENERATE_TESTLIST = NO +GENERATE_BUGLIST = NO +GENERATE_DEPRECATEDLIST= NO +ENABLED_SECTIONS = +MAX_INITIALIZER_LINES = 30 +SHOW_USED_FILES = NO +SHOW_DIRECTORIES = NO +FILE_VERSION_FILTER = +#--------------------------------------------------------------------------- +# configuration options related to warning and progress messages +#--------------------------------------------------------------------------- +QUIET = YES +WARNINGS = YES +WARN_IF_UNDOCUMENTED = NO +WARN_IF_DOC_ERROR = YES +WARN_NO_PARAMDOC = NO +WARN_FORMAT = "$file:$line: $text" +WARN_LOGFILE = +#--------------------------------------------------------------------------- +# configuration options related to the input files +#--------------------------------------------------------------------------- +INPUT = ../lib \ + ../include/netlink +FILE_PATTERNS = *.c \ + *.h +RECURSIVE = YES +EXCLUDE = SCCS +EXCLUDE_SYMLINKS = NO +EXCLUDE_PATTERNS = +EXAMPLE_PATH = +EXAMPLE_PATTERNS = +EXAMPLE_RECURSIVE = NO +IMAGE_PATH = +INPUT_FILTER = +FILTER_PATTERNS = +FILTER_SOURCE_FILES = NO +#--------------------------------------------------------------------------- +# configuration options related to source browsing +#--------------------------------------------------------------------------- +SOURCE_BROWSER = YES +INLINE_SOURCES = NO +STRIP_CODE_COMMENTS = NO +REFERENCED_BY_RELATION = YES +REFERENCES_RELATION = YES +USE_HTAGS = NO +VERBATIM_HEADERS = NO +#--------------------------------------------------------------------------- +# configuration options related to the alphabetical class index +#--------------------------------------------------------------------------- +ALPHABETICAL_INDEX = NO +COLS_IN_ALPHA_INDEX = 5 +IGNORE_PREFIX = nl_ +#--------------------------------------------------------------------------- +# configuration options related to the HTML output +#--------------------------------------------------------------------------- +GENERATE_HTML = YES +HTML_OUTPUT = html +HTML_FILE_EXTENSION = .html +HTML_HEADER = +HTML_FOOTER = +HTML_STYLESHEET = libnl.css +HTML_ALIGN_MEMBERS = YES +GENERATE_HTMLHELP = NO +CHM_FILE = +HHC_LOCATION = +GENERATE_CHI = NO +BINARY_TOC = NO +TOC_EXPAND = NO +DISABLE_INDEX = NO +ENUM_VALUES_PER_LINE = 4 +GENERATE_TREEVIEW = NO +TREEVIEW_WIDTH = 250 +#--------------------------------------------------------------------------- +# configuration options related to the LaTeX output +#--------------------------------------------------------------------------- +GENERATE_LATEX = NO +LATEX_OUTPUT = latex +LATEX_CMD_NAME = latex +MAKEINDEX_CMD_NAME = makeindex +COMPACT_LATEX = NO +PAPER_TYPE = a4wide +EXTRA_PACKAGES = +LATEX_HEADER = +PDF_HYPERLINKS = NO +USE_PDFLATEX = NO +LATEX_BATCHMODE = NO +LATEX_HIDE_INDICES = NO +#--------------------------------------------------------------------------- +# configuration options related to the RTF output +#--------------------------------------------------------------------------- +GENERATE_RTF = NO +RTF_OUTPUT = rtf +COMPACT_RTF = NO +RTF_HYPERLINKS = NO +RTF_STYLESHEET_FILE = +RTF_EXTENSIONS_FILE = +#--------------------------------------------------------------------------- +# configuration options related to the man page output +#--------------------------------------------------------------------------- +GENERATE_MAN = NO +MAN_OUTPUT = man +MAN_EXTENSION = .3 +MAN_LINKS = NO +#--------------------------------------------------------------------------- +# configuration options related to the XML output +#--------------------------------------------------------------------------- +GENERATE_XML = NO +XML_OUTPUT = xml +XML_SCHEMA = +XML_DTD = +XML_PROGRAMLISTING = YES +#--------------------------------------------------------------------------- +# configuration options for the AutoGen Definitions output +#--------------------------------------------------------------------------- +GENERATE_AUTOGEN_DEF = NO +#--------------------------------------------------------------------------- +# configuration options related to the Perl module output +#--------------------------------------------------------------------------- +GENERATE_PERLMOD = NO +PERLMOD_LATEX = NO +PERLMOD_PRETTY = YES +PERLMOD_MAKEVAR_PREFIX = +#--------------------------------------------------------------------------- +# Configuration options related to the preprocessor +#--------------------------------------------------------------------------- +ENABLE_PREPROCESSING = YES +MACRO_EXPANSION = NO +EXPAND_ONLY_PREDEF = NO +SEARCH_INCLUDES = NO +INCLUDE_PATH = +INCLUDE_FILE_PATTERNS = +PREDEFINED = +EXPAND_AS_DEFINED = +SKIP_FUNCTION_MACROS = YES +#--------------------------------------------------------------------------- +# Configuration::additions related to external references +#--------------------------------------------------------------------------- +TAGFILES = +GENERATE_TAGFILE = +ALLEXTERNALS = YES +EXTERNAL_GROUPS = YES +PERL_PATH = /usr/bin/perl +#--------------------------------------------------------------------------- +# Configuration options related to the dot tool +#--------------------------------------------------------------------------- +CLASS_DIAGRAMS = NO +HIDE_UNDOC_RELATIONS = YES +HAVE_DOT = YES +CLASS_GRAPH = NO +COLLABORATION_GRAPH = NO +GROUP_GRAPHS = NO +UML_LOOK = YES +TEMPLATE_RELATIONS = NO +INCLUDE_GRAPH = NO +INCLUDED_BY_GRAPH = NO +CALL_GRAPH = NO +GRAPHICAL_HIERARCHY = YES +DIRECTORY_GRAPH = NO +DOT_IMAGE_FORMAT = png +DOT_PATH = +DOTFILE_DIRS = +MAX_DOT_GRAPH_WIDTH = 1024 +MAX_DOT_GRAPH_HEIGHT = 1024 +MAX_DOT_GRAPH_DEPTH = 0 +DOT_TRANSPARENT = NO +DOT_MULTI_TARGETS = NO +GENERATE_LEGEND = YES +DOT_CLEANUP = YES +#--------------------------------------------------------------------------- +# Configuration::additions related to the search engine +#--------------------------------------------------------------------------- +SEARCHENGINE = NO diff --git a/doc/Makefile b/doc/Makefile new file mode 100644 index 0000000..9c34e0f --- /dev/null +++ b/doc/Makefile @@ -0,0 +1,35 @@ +# +# doc/Makefile +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation version 2.1 +# of the License. +# +# Copyright (c) 2003-2006 Thomas Graf +# + +ifeq ($(shell [ ! -r ../Makefile.opts ] && echo 1),) + include ../Makefile.opts +endif + +export + +.PHONY: all gendoc clean distclean install + +all: + @true + +gendoc: + doxygen Doxyfile + +clean: + @true + +distclean: + $(RM) -f html/* + +install: + @true + +$(DEPS): ../Makefile.opts diff --git a/doc/libnl.css b/doc/libnl.css new file mode 100644 index 0000000..42e3e27 --- /dev/null +++ b/doc/libnl.css @@ -0,0 +1,310 @@ +BODY,H1,H2,H3,H4,H5,H6,P,CENTER,TD,TH,UL,DL,DIV { + font-family: Geneva, Arial, Helvetica, sans-serif; +} +BODY,TD { + font-size: 90%; +} +H1 { + text-align: center; + font-size: 160%; +} +H2 { + font-size: 120%; +} +H3 { + font-size: 100%; +} +CAPTION { font-weight: bold } +DIV.qindex { + width: 100%; + background-color: #eeeeff; + border: 1px solid #b0b0b0; + text-align: center; + margin: 2px; + padding: 2px; + line-height: 140%; +} +DIV.nav { + width: 100%; + background-color: #eeeeff; + border: 1px solid #b0b0b0; + text-align: center; + margin: 2px; + padding: 2px; + line-height: 140%; +} +DIV.navtab { + background-color: #eeeeff; + border: 1px solid #b0b0b0; + text-align: center; + margin: 2px; + margin-right: 15px; + padding: 2px; +} +TD.navtab { + font-size: 70%; +} +A.qindex { + text-decoration: none; + font-weight: bold; + color: #1A419D; +} +A.qindex:visited { + text-decoration: none; + font-weight: bold; + color: #1A419D +} +A.qindex:hover { + text-decoration: none; + background-color: #ddddff; +} +A.qindexHL { + text-decoration: none; + font-weight: bold; + background-color: #6666cc; + color: #ffffff; + border: 1px double #9295C2; +} +A.qindexHL:hover { + text-decoration: none; + background-color: #6666cc; + color: #ffffff; +} +A.qindexHL:visited { text-decoration: none; background-color: #6666cc; color: #ffffff } +A.el { text-decoration: none; font-weight: bold } +A.elRef { font-weight: bold } +A.code:link { text-decoration: none; font-weight: normal; color: #0000FF} +A.code:visited { text-decoration: none; font-weight: normal; color: #0000FF} +A.codeRef:link { font-weight: normal; color: #0000FF} +A.codeRef:visited { font-weight: normal; color: #0000FF} +A:hover { text-decoration: none; background-color: #f2f2ff } +DL.el { margin-left: -1cm } +.fragment { + font-family: Fixed, monospace; + font-size: 95%; +} +PRE.fragment { + border: 1px solid #CCCCCC; + background-color: #f5f5f5; + margin-top: 4px; + margin-bottom: 4px; + margin-left: 2px; + margin-right: 8px; + padding-left: 6px; + padding-right: 6px; + padding-top: 4px; + padding-bottom: 4px; +} +DIV.ah { background-color: black; font-weight: bold; color: #ffffff; margin-bottom: 3px; margin-top: 3px } +TD.md { background-color: #F4F4FB; font-weight: bold; } +TD.mdPrefix { + background-color: #F4F4FB; + color: #606060; + font-size: 80%; +} +TD.mdname1 { background-color: #F4F4FB; font-weight: bold; color: #602020; } +TD.mdname { background-color: #F4F4FB; font-weight: bold; color: #602020; width: 600px; } +DIV.groupHeader { + margin-left: 16px; + margin-top: 12px; + margin-bottom: 6px; + font-weight: bold; +} +DIV.groupText { margin-left: 16px; font-style: italic; font-size: 90% } +BODY { + background: white; + color: black; + margin-right: 20px; + margin-left: 20px; +} +TD.indexkey { + background-color: #eeeeff; + font-weight: bold; + padding-right : 10px; + padding-top : 2px; + padding-left : 10px; + padding-bottom : 2px; + margin-left : 0px; + margin-right : 0px; + margin-top : 2px; + margin-bottom : 2px; + border: 1px solid #CCCCCC; +} +TD.indexvalue { + background-color: #eeeeff; + font-style: italic; + padding-right : 10px; + padding-top : 2px; + padding-left : 10px; + padding-bottom : 2px; + margin-left : 0px; + margin-right : 0px; + margin-top : 2px; + margin-bottom : 2px; + border: 1px solid #CCCCCC; +} +TR.memlist { + background-color: #f0f0f0; +} +P.formulaDsp { text-align: center; } +IMG.formulaDsp { } +IMG.formulaInl { vertical-align: middle; } +SPAN.keyword { color: #008000 } +SPAN.keywordtype { color: #604020 } +SPAN.keywordflow { color: #e08000 } +SPAN.comment { color: #800000 } +SPAN.preprocessor { color: #806020 } +SPAN.stringliteral { color: #002080 } +SPAN.charliteral { color: #008080 } +.mdTable { + border: 1px solid #868686; + background-color: #F4F4FB; + width: 100%; +} +.mdRow { + padding: 8px 10px; +} +.mdescLeft { + padding: 0px 8px 4px 8px; + font-size: 80%; + font-style: italic; + background-color: #FAFAFA; + border-top: 1px none #E0E0E0; + border-right: 1px none #E0E0E0; + border-bottom: 1px none #E0E0E0; + border-left: 1px none #E0E0E0; + margin: 0px; +} +.mdescRight { + padding: 0px 8px 4px 8px; + font-size: 80%; + font-style: italic; + background-color: #FAFAFA; + border-top: 1px none #E0E0E0; + border-right: 1px none #E0E0E0; + border-bottom: 1px none #E0E0E0; + border-left: 1px none #E0E0E0; + margin: 0px; +} +.memItemLeft { + padding: 1px 0px 0px 8px; + margin: 4px; + border-top-width: 1px; + border-right-width: 1px; + border-bottom-width: 1px; + border-left-width: 1px; + border-top-color: #E0E0E0; + border-right-color: #E0E0E0; + border-bottom-color: #E0E0E0; + border-left-color: #E0E0E0; + border-top-style: solid; + border-right-style: none; + border-bottom-style: none; + border-left-style: none; + background-color: #FAFAFA; + font-size: 80%; +} +.memItemRight { + padding: 1px 8px 0px 8px; + margin: 4px; + border-top-width: 1px; + border-right-width: 1px; + border-bottom-width: 1px; + border-left-width: 1px; + border-top-color: #E0E0E0; + border-right-color: #E0E0E0; + border-bottom-color: #E0E0E0; + border-left-color: #E0E0E0; + border-top-style: solid; + border-right-style: none; + border-bottom-style: none; + border-left-style: none; + background-color: #FAFAFA; + font-size: 80%; +} +.memTemplItemLeft { + padding: 1px 0px 0px 8px; + margin: 4px; + border-top-width: 1px; + border-right-width: 1px; + border-bottom-width: 1px; + border-left-width: 1px; + border-top-color: #E0E0E0; + border-right-color: #E0E0E0; + border-bottom-color: #E0E0E0; + border-left-color: #E0E0E0; + border-top-style: none; + border-right-style: none; + border-bottom-style: none; + border-left-style: none; + background-color: #FAFAFA; + font-size: 80%; +} +.memTemplItemRight { + padding: 1px 8px 0px 8px; + margin: 4px; + border-top-width: 1px; + border-right-width: 1px; + border-bottom-width: 1px; + border-left-width: 1px; + border-top-color: #E0E0E0; + border-right-color: #E0E0E0; + border-bottom-color: #E0E0E0; + border-left-color: #E0E0E0; + border-top-style: none; + border-right-style: none; + border-bottom-style: none; + border-left-style: none; + background-color: #FAFAFA; + font-size: 80%; +} +.memTemplParams { + padding: 1px 0px 0px 8px; + margin: 4px; + border-top-width: 1px; + border-right-width: 1px; + border-bottom-width: 1px; + border-left-width: 1px; + border-top-color: #E0E0E0; + border-right-color: #E0E0E0; + border-bottom-color: #E0E0E0; + border-left-color: #E0E0E0; + border-top-style: solid; + border-right-style: none; + border-bottom-style: none; + border-left-style: none; + color: #606060; + background-color: #FAFAFA; + font-size: 80%; +} +.search { color: #003399; + font-weight: bold; +} +FORM.search { + margin-bottom: 0px; + margin-top: 0px; +} +INPUT.search { font-size: 75%; + color: #000080; + font-weight: normal; + background-color: #eeeeff; +} +TD.tiny { font-size: 75%; +} +a { + color: #252E78; +} +a:visited { + color: #3D2185; +} +.dirtab { padding: 4px; + border-collapse: collapse; + border: 1px solid #b0b0b0; +} +TH.dirtab { background: #eeeeff; + font-weight: bold; +} +HR { height: 1px; + border: none; + border-top: 1px solid black; +} diff --git a/include/Makefile b/include/Makefile new file mode 100644 index 0000000..f74539b --- /dev/null +++ b/include/Makefile @@ -0,0 +1,36 @@ +# +# include/Makefile +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation version 2.1 +# of the License. +# +# Copyright (c) 2003-2006 Thomas Graf +# + +ifeq ($(shell [ ! -r ../Makefile.opts ] && echo 1),) + include ../Makefile.opts +endif + +.PHONY: all clean install + +all: + @true + +clean: + @true + +distclean: + @true + +install: + mkdir -p $(DESTDIR)$(includedir)/netlink/route/sch/ + mkdir -p $(DESTDIR)$(includedir)/netlink/route/cls/ + mkdir -p $(DESTDIR)$(includedir)/netlink/fib_lookup/ + install -m 0644 netlink/*.h $(DESTDIR)$(includedir)/netlink/ + install -m 0644 netlink/route/*.h $(DESTDIR)$(includedir)/netlink/route/ + install -m 0644 netlink/route/sch/*.h $(DESTDIR)$(includedir)/netlink/route/sch/ + install -m 0644 netlink/route/cls/*.h $(DESTDIR)$(includedir)/netlink/route/cls/ + install -m 0644 netlink/fib_lookup/*.h $(DESTDIR)$(includedir)/netlink/fib_lookup/ + diff --git a/include/linux/gen_stats.h b/include/linux/gen_stats.h new file mode 100644 index 0000000..ca60fc1 --- /dev/null +++ b/include/linux/gen_stats.h @@ -0,0 +1,60 @@ +#ifndef __LINUX_GEN_STATS_H +#define __LINUX_GEN_STATS_H + +enum { + TCA_STATS_UNSPEC, + TCA_STATS_BASIC, + TCA_STATS_RATE_EST, + TCA_STATS_QUEUE, + TCA_STATS_APP, + __TCA_STATS_MAX, +}; +#define TCA_STATS_MAX (__TCA_STATS_MAX - 1) + +/** + * @bytes: number of seen bytes + * @packets: number of seen packets + */ +struct gnet_stats_basic +{ + __u64 bytes; + __u32 packets; +}; + +/** + * @bps: current byte rate + * @pps: current packet rate + */ +struct gnet_stats_rate_est +{ + __u32 bps; + __u32 pps; +}; + +/** + * @qlen: queue length + * @backlog: backlog size of queue + * @drops: number of dropped packets + * @requeues: number of requeues + */ +struct gnet_stats_queue +{ + __u32 qlen; + __u32 backlog; + __u32 drops; + __u32 requeues; + __u32 overlimits; +}; + +/** + * @interval: sampling period + * @ewma_log: the log of measurement window weight + */ +struct gnet_estimator +{ + signed char interval; + unsigned char ewma_log; +}; + + +#endif /* __LINUX_GEN_STATS_H */ diff --git a/include/linux/if.h b/include/linux/if.h new file mode 100644 index 0000000..9128570 --- /dev/null +++ b/include/linux/if.h @@ -0,0 +1,102 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Global definitions for the INET interface module. + * + * Version: @(#)if.h 1.0.2 04/18/93 + * + * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988 + * Ross Biro + * Fred N. van Kempen, + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _LINUX_IF_H +#define _LINUX_IF_H + +#define IFNAMSIZ 16 + +/* Standard interface flags (netdevice->flags). */ +#define IFF_UP 0x1 /* interface is up */ +#define IFF_BROADCAST 0x2 /* broadcast address valid */ +#define IFF_DEBUG 0x4 /* turn on debugging */ +#define IFF_LOOPBACK 0x8 /* is a loopback net */ +#define IFF_POINTOPOINT 0x10 /* interface is has p-p link */ +#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ +#define IFF_RUNNING 0x40 /* interface running and carrier ok */ +#define IFF_NOARP 0x80 /* no ARP protocol */ +#define IFF_PROMISC 0x100 /* receive all packets */ +#define IFF_ALLMULTI 0x200 /* receive all multicast packets*/ + +#define IFF_MASTER 0x400 /* master of a load balancer */ +#define IFF_SLAVE 0x800 /* slave of a load balancer */ + +#define IFF_MULTICAST 0x1000 /* Supports multicast */ + +#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_MASTER|IFF_SLAVE|IFF_RUNNING) + +#define IFF_PORTSEL 0x2000 /* can set media type */ +#define IFF_AUTOMEDIA 0x4000 /* auto media select active */ +#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses*/ +#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ +#define IFF_DORMANT 0x20000 /* driver signals dormant */ + +/* Private (from user) interface flags (netdevice->priv_flags). */ +#define IFF_802_1Q_VLAN 0x1 /* 802.1Q VLAN device. */ +#define IFF_EBRIDGE 0x2 /* Ethernet bridging device. */ + +#define IF_GET_IFACE 0x0001 /* for querying only */ +#define IF_GET_PROTO 0x0002 + +/* For definitions see hdlc.h */ +#define IF_IFACE_V35 0x1000 /* V.35 serial interface */ +#define IF_IFACE_V24 0x1001 /* V.24 serial interface */ +#define IF_IFACE_X21 0x1002 /* X.21 serial interface */ +#define IF_IFACE_T1 0x1003 /* T1 telco serial interface */ +#define IF_IFACE_E1 0x1004 /* E1 telco serial interface */ +#define IF_IFACE_SYNC_SERIAL 0x1005 /* can't be set by software */ +#define IF_IFACE_X21D 0x1006 /* X.21 Dual Clocking (FarSite) */ + +/* For definitions see hdlc.h */ +#define IF_PROTO_HDLC 0x2000 /* raw HDLC protocol */ +#define IF_PROTO_PPP 0x2001 /* PPP protocol */ +#define IF_PROTO_CISCO 0x2002 /* Cisco HDLC protocol */ +#define IF_PROTO_FR 0x2003 /* Frame Relay protocol */ +#define IF_PROTO_FR_ADD_PVC 0x2004 /* Create FR PVC */ +#define IF_PROTO_FR_DEL_PVC 0x2005 /* Delete FR PVC */ +#define IF_PROTO_X25 0x2006 /* X.25 */ +#define IF_PROTO_HDLC_ETH 0x2007 /* raw HDLC, Ethernet emulation */ +#define IF_PROTO_FR_ADD_ETH_PVC 0x2008 /* Create FR Ethernet-bridged PVC */ +#define IF_PROTO_FR_DEL_ETH_PVC 0x2009 /* Delete FR Ethernet-bridged PVC */ +#define IF_PROTO_FR_PVC 0x200A /* for reading PVC status */ +#define IF_PROTO_FR_ETH_PVC 0x200B +#define IF_PROTO_RAW 0x200C /* RAW Socket */ + + +/* + * Device mapping structure. I'd just gone off and designed a + * beautiful scheme using only loadable modules with arguments + * for driver options and along come the PCMCIA people 8) + * + * Ah well. The get() side of this is good for WDSETUP, and it'll + * be handy for debugging things. The set side is fine for now and + * being very small might be worth keeping for clean configuration. + */ + +struct ifmap +{ + unsigned long mem_start; + unsigned long mem_end; + unsigned short base_addr; + unsigned char irq; + unsigned char dma; + unsigned char port; + /* 3 bytes spare */ +}; + +#endif /* _LINUX_IF_H */ diff --git a/include/linux/if_arp.h b/include/linux/if_arp.h new file mode 100644 index 0000000..1c7417b --- /dev/null +++ b/include/linux/if_arp.h @@ -0,0 +1,149 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Global definitions for the ARP (RFC 826) protocol. + * + * Version: @(#)if_arp.h 1.0.1 04/16/93 + * + * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988 + * Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source. + * Ross Biro + * Fred N. van Kempen, + * Florian La Roche, + * Jonathan Layes + * Arnaldo Carvalho de Melo ARPHRD_HWX25 + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _LINUX_IF_ARP_H +#define _LINUX_IF_ARP_H + +/* ARP protocol HARDWARE identifiers. */ +#define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */ +#define ARPHRD_ETHER 1 /* Ethernet 10Mbps */ +#define ARPHRD_EETHER 2 /* Experimental Ethernet */ +#define ARPHRD_AX25 3 /* AX.25 Level 2 */ +#define ARPHRD_PRONET 4 /* PROnet token ring */ +#define ARPHRD_CHAOS 5 /* Chaosnet */ +#define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB */ +#define ARPHRD_ARCNET 7 /* ARCnet */ +#define ARPHRD_APPLETLK 8 /* APPLEtalk */ +#define ARPHRD_DLCI 15 /* Frame Relay DLCI */ +#define ARPHRD_ATM 19 /* ATM */ +#define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id) */ +#define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734 */ +#define ARPHRD_EUI64 27 /* EUI-64 */ +#define ARPHRD_INFINIBAND 32 /* InfiniBand */ + +/* Dummy types for non ARP hardware */ +#define ARPHRD_SLIP 256 +#define ARPHRD_CSLIP 257 +#define ARPHRD_SLIP6 258 +#define ARPHRD_CSLIP6 259 +#define ARPHRD_RSRVD 260 /* Notional KISS type */ +#define ARPHRD_ADAPT 264 +#define ARPHRD_ROSE 270 +#define ARPHRD_X25 271 /* CCITT X.25 */ +#define ARPHRD_HWX25 272 /* Boards with X.25 in firmware */ +#define ARPHRD_PPP 512 +#define ARPHRD_CISCO 513 /* Cisco HDLC */ +#define ARPHRD_HDLC ARPHRD_CISCO +#define ARPHRD_LAPB 516 /* LAPB */ +#define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */ +#define ARPHRD_RAWHDLC 518 /* Raw HDLC */ + +#define ARPHRD_TUNNEL 768 /* IPIP tunnel */ +#define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */ +#define ARPHRD_FRAD 770 /* Frame Relay Access Device */ +#define ARPHRD_SKIP 771 /* SKIP vif */ +#define ARPHRD_LOOPBACK 772 /* Loopback device */ +#define ARPHRD_LOCALTLK 773 /* Localtalk device */ +#define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */ +#define ARPHRD_BIF 775 /* AP1000 BIF */ +#define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */ +#define ARPHRD_IPDDP 777 /* IP over DDP tunneller */ +#define ARPHRD_IPGRE 778 /* GRE over IP */ +#define ARPHRD_PIMREG 779 /* PIMSM register interface */ +#define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */ +#define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */ +#define ARPHRD_ECONET 782 /* Acorn Econet */ +#define ARPHRD_IRDA 783 /* Linux-IrDA */ +/* ARP works differently on different FC media .. so */ +#define ARPHRD_FCPP 784 /* Point to point fibrechannel */ +#define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */ +#define ARPHRD_FCPL 786 /* Fibrechannel public loop */ +#define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */ + /* 787->799 reserved for fibrechannel media types */ +#define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */ +#define ARPHRD_IEEE80211 801 /* IEEE 802.11 */ +#define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */ +#define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */ + +#define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */ +#define ARPHRD_NONE 0xFFFE /* zero header length */ + +/* ARP protocol opcodes. */ +#define ARPOP_REQUEST 1 /* ARP request */ +#define ARPOP_REPLY 2 /* ARP reply */ +#define ARPOP_RREQUEST 3 /* RARP request */ +#define ARPOP_RREPLY 4 /* RARP reply */ +#define ARPOP_InREQUEST 8 /* InARP request */ +#define ARPOP_InREPLY 9 /* InARP reply */ +#define ARPOP_NAK 10 /* (ATM)ARP NAK */ + + +/* ARP ioctl request. */ +struct arpreq { + struct sockaddr arp_pa; /* protocol address */ + struct sockaddr arp_ha; /* hardware address */ + int arp_flags; /* flags */ + struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ + char arp_dev[16]; +}; + +struct arpreq_old { + struct sockaddr arp_pa; /* protocol address */ + struct sockaddr arp_ha; /* hardware address */ + int arp_flags; /* flags */ + struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ +}; + +/* ARP Flag values. */ +#define ATF_COM 0x02 /* completed entry (ha valid) */ +#define ATF_PERM 0x04 /* permanent entry */ +#define ATF_PUBL 0x08 /* publish entry */ +#define ATF_USETRAILERS 0x10 /* has requested trailers */ +#define ATF_NETMASK 0x20 /* want to use a netmask (only + for proxy entries) */ +#define ATF_DONTPUB 0x40 /* don't answer this addresses */ + +/* + * This structure defines an ethernet arp header. + */ + +struct arphdr +{ + unsigned short ar_hrd; /* format of hardware address */ + unsigned short ar_pro; /* format of protocol address */ + unsigned char ar_hln; /* length of hardware address */ + unsigned char ar_pln; /* length of protocol address */ + unsigned short ar_op; /* ARP opcode (command) */ + +#if 0 + /* + * Ethernet looks like this : This bit is variable sized however... + */ + unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ + unsigned char ar_sip[4]; /* sender IP address */ + unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ + unsigned char ar_tip[4]; /* target IP address */ +#endif + +}; + +#endif /* _LINUX_IF_ARP_H */ diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h new file mode 100644 index 0000000..ab7df16 --- /dev/null +++ b/include/linux/if_ether.h @@ -0,0 +1,106 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Global definitions for the Ethernet IEEE 802.3 interface. + * + * Version: @(#)if_ether.h 1.0.1a 02/08/94 + * + * Author: Fred N. van Kempen, + * Donald Becker, + * Alan Cox, + * Steve Whitehouse, + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _LINUX_IF_ETHER_H +#define _LINUX_IF_ETHER_H + +/* + * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble + * and FCS/CRC (frame check sequence). + */ + +#define ETH_ALEN 6 /* Octets in one ethernet addr */ +#define ETH_HLEN 14 /* Total octets in header. */ +#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ +#define ETH_DATA_LEN 1500 /* Max. octets in payload */ +#define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */ + +/* + * These are the defined Ethernet Protocol ID's. + */ + +#define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */ +#define ETH_P_PUP 0x0200 /* Xerox PUP packet */ +#define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */ +#define ETH_P_IP 0x0800 /* Internet Protocol packet */ +#define ETH_P_X25 0x0805 /* CCITT X.25 */ +#define ETH_P_ARP 0x0806 /* Address Resolution packet */ +#define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */ +#define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */ +#define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */ +#define ETH_P_DEC 0x6000 /* DEC Assigned proto */ +#define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */ +#define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */ +#define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */ +#define ETH_P_LAT 0x6004 /* DEC LAT */ +#define ETH_P_DIAG 0x6005 /* DEC Diagnostics */ +#define ETH_P_CUST 0x6006 /* DEC Customer use */ +#define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */ +#define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */ +#define ETH_P_ATALK 0x809B /* Appletalk DDP */ +#define ETH_P_AARP 0x80F3 /* Appletalk AARP */ +#define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */ +#define ETH_P_IPX 0x8137 /* IPX over DIX */ +#define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */ +#define ETH_P_WCCP 0x883E /* Web-cache coordination protocol + * defined in draft-wilson-wrec-wccp-v2-00.txt */ +#define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */ +#define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */ +#define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */ +#define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */ +#define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */ +#define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport + * over Ethernet + */ +#define ETH_P_AOE 0x88A2 /* ATA over Ethernet */ + +/* + * Non DIX types. Won't clash for 1500 types. + */ + +#define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */ +#define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */ +#define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */ +#define ETH_P_802_2 0x0004 /* 802.2 frames */ +#define ETH_P_SNAP 0x0005 /* Internal only */ +#define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */ +#define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/ +#define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */ +#define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */ +#define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/ +#define ETH_P_TR_802_2 0x0011 /* 802.2 frames */ +#define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */ +#define ETH_P_CONTROL 0x0016 /* Card specific control frames */ +#define ETH_P_IRDA 0x0017 /* Linux-IrDA */ +#define ETH_P_ECONET 0x0018 /* Acorn Econet */ +#define ETH_P_HDLC 0x0019 /* HDLC frames */ +#define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */ + +/* + * This is an Ethernet frame header. + */ + +struct ethhdr { + unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ + unsigned char h_source[ETH_ALEN]; /* source ether addr */ + unsigned short h_proto; /* packet type ID field */ +} __attribute__((packed)); + +#endif /* _LINUX_IF_ETHER_H */ diff --git a/include/linux/pkt_cls.h b/include/linux/pkt_cls.h new file mode 100644 index 0000000..1bcdd11 --- /dev/null +++ b/include/linux/pkt_cls.h @@ -0,0 +1,314 @@ +#ifndef __LINUX_PKT_CLS_H +#define __LINUX_PKT_CLS_H + +/* I think i could have done better macros ; for now this is stolen from + * some arch/mips code - jhs +*/ +#define _TC_MAKE32(x) ((x)) + +#define _TC_MAKEMASK1(n) (_TC_MAKE32(1) << _TC_MAKE32(n)) +#define _TC_MAKEMASK(v,n) (_TC_MAKE32((_TC_MAKE32(1)<<(v))-1) << _TC_MAKE32(n)) +#define _TC_MAKEVALUE(v,n) (_TC_MAKE32(v) << _TC_MAKE32(n)) +#define _TC_GETVALUE(v,n,m) ((_TC_MAKE32(v) & _TC_MAKE32(m)) >> _TC_MAKE32(n)) + +/* verdict bit breakdown + * +bit 0: when set -> this packet has been munged already + +bit 1: when set -> It is ok to munge this packet + +bit 2,3,4,5: Reclassify counter - sort of reverse TTL - if exceeded +assume loop + +bit 6,7: Where this packet was last seen +0: Above the transmit example at the socket level +1: on the Ingress +2: on the Egress + +bit 8: when set --> Request not to classify on ingress. + +bits 9,10,11: redirect counter - redirect TTL. Loop avoidance + + * + * */ + +#define TC_MUNGED _TC_MAKEMASK1(0) +#define SET_TC_MUNGED(v) ( TC_MUNGED | (v & ~TC_MUNGED)) +#define CLR_TC_MUNGED(v) ( v & ~TC_MUNGED) + +#define TC_OK2MUNGE _TC_MAKEMASK1(1) +#define SET_TC_OK2MUNGE(v) ( TC_OK2MUNGE | (v & ~TC_OK2MUNGE)) +#define CLR_TC_OK2MUNGE(v) ( v & ~TC_OK2MUNGE) + +#define S_TC_VERD _TC_MAKE32(2) +#define M_TC_VERD _TC_MAKEMASK(4,S_TC_VERD) +#define G_TC_VERD(x) _TC_GETVALUE(x,S_TC_VERD,M_TC_VERD) +#define V_TC_VERD(x) _TC_MAKEVALUE(x,S_TC_VERD) +#define SET_TC_VERD(v,n) ((V_TC_VERD(n)) | (v & ~M_TC_VERD)) + +#define S_TC_FROM _TC_MAKE32(6) +#define M_TC_FROM _TC_MAKEMASK(2,S_TC_FROM) +#define G_TC_FROM(x) _TC_GETVALUE(x,S_TC_FROM,M_TC_FROM) +#define V_TC_FROM(x) _TC_MAKEVALUE(x,S_TC_FROM) +#define SET_TC_FROM(v,n) ((V_TC_FROM(n)) | (v & ~M_TC_FROM)) +#define AT_STACK 0x0 +#define AT_INGRESS 0x1 +#define AT_EGRESS 0x2 + +#define TC_NCLS _TC_MAKEMASK1(8) +#define SET_TC_NCLS(v) ( TC_NCLS | (v & ~TC_NCLS)) +#define CLR_TC_NCLS(v) ( v & ~TC_NCLS) + +#define S_TC_RTTL _TC_MAKE32(9) +#define M_TC_RTTL _TC_MAKEMASK(3,S_TC_RTTL) +#define G_TC_RTTL(x) _TC_GETVALUE(x,S_TC_RTTL,M_TC_RTTL) +#define V_TC_RTTL(x) _TC_MAKEVALUE(x,S_TC_RTTL) +#define SET_TC_RTTL(v,n) ((V_TC_RTTL(n)) | (v & ~M_TC_RTTL)) + +#define S_TC_AT _TC_MAKE32(12) +#define M_TC_AT _TC_MAKEMASK(2,S_TC_AT) +#define G_TC_AT(x) _TC_GETVALUE(x,S_TC_AT,M_TC_AT) +#define V_TC_AT(x) _TC_MAKEVALUE(x,S_TC_AT) +#define SET_TC_AT(v,n) ((V_TC_AT(n)) | (v & ~M_TC_AT)) + +/* Action attributes */ +enum +{ + TCA_ACT_UNSPEC, + TCA_ACT_KIND, + TCA_ACT_OPTIONS, + TCA_ACT_INDEX, + __TCA_ACT_MAX +}; + +#define TCA_ACT_MAX __TCA_ACT_MAX +#define TCA_OLD_COMPAT (TCA_ACT_MAX+1) +#define TCA_ACT_MAX_PRIO 32 +#define TCA_ACT_BIND 1 +#define TCA_ACT_NOBIND 0 +#define TCA_ACT_UNBIND 1 +#define TCA_ACT_NOUNBIND 0 +#define TCA_ACT_REPLACE 1 +#define TCA_ACT_NOREPLACE 0 +#define MAX_REC_LOOP 4 +#define MAX_RED_LOOP 4 + +#define TC_ACT_UNSPEC (-1) +#define TC_ACT_OK 0 +#define TC_ACT_RECLASSIFY 1 +#define TC_ACT_SHOT 2 +#define TC_ACT_PIPE 3 +#define TC_ACT_STOLEN 4 +#define TC_ACT_QUEUED 5 +#define TC_ACT_REPEAT 6 +#define TC_ACT_JUMP 0x10000000 + +/* Action type identifiers*/ +enum +{ + TCA_ID_UNSPEC=0, + TCA_ID_POLICE=1, + /* other actions go here */ + __TCA_ID_MAX=255 +}; + +#define TCA_ID_MAX __TCA_ID_MAX + +struct tc_police +{ + __u32 index; + int action; +#define TC_POLICE_UNSPEC TC_ACT_UNSPEC +#define TC_POLICE_OK TC_ACT_OK +#define TC_POLICE_RECLASSIFY TC_ACT_RECLASSIFY +#define TC_POLICE_SHOT TC_ACT_SHOT +#define TC_POLICE_PIPE TC_ACT_PIPE + + __u32 limit; + __u32 burst; + __u32 mtu; + struct tc_ratespec rate; + struct tc_ratespec peakrate; + int refcnt; + int bindcnt; + __u32 capab; +}; + +struct tcf_t +{ + __u32 install; + __u32 lastuse; + __u32 expires; +}; + +struct tc_cnt +{ + int refcnt; + int bindcnt; +}; + +#define tc_gen \ + __u32 index; \ + __u32 capab; \ + int action; \ + int refcnt; \ + int bindcnt + +enum +{ + TCA_POLICE_UNSPEC, + TCA_POLICE_TBF, + TCA_POLICE_RATE, + TCA_POLICE_PEAKRATE, + TCA_POLICE_AVRATE, + TCA_POLICE_RESULT, + __TCA_POLICE_MAX +#define TCA_POLICE_RESULT TCA_POLICE_RESULT +}; + +#define TCA_POLICE_MAX (__TCA_POLICE_MAX - 1) + +/* U32 filters */ + +#define TC_U32_HTID(h) ((h)&0xFFF00000) +#define TC_U32_USERHTID(h) (TC_U32_HTID(h)>>20) +#define TC_U32_HASH(h) (((h)>>12)&0xFF) +#define TC_U32_NODE(h) ((h)&0xFFF) +#define TC_U32_KEY(h) ((h)&0xFFFFF) +#define TC_U32_UNSPEC 0 +#define TC_U32_ROOT (0xFFF00000) + +enum +{ + TCA_U32_UNSPEC, + TCA_U32_CLASSID, + TCA_U32_HASH, + TCA_U32_LINK, + TCA_U32_DIVISOR, + TCA_U32_SEL, + TCA_U32_POLICE, + TCA_U32_ACT, + TCA_U32_INDEV, + TCA_U32_PCNT, + __TCA_U32_MAX +}; + +#define TCA_U32_MAX (__TCA_U32_MAX - 1) + +struct tc_u32_key +{ + __u32 mask; + __u32 val; + int off; + int offmask; +}; + +struct tc_u32_sel +{ + unsigned char flags; + unsigned char offshift; + unsigned char nkeys; + + __u16 offmask; + __u16 off; + short offoff; + + short hoff; + __u32 hmask; + struct tc_u32_key keys[0]; +}; + +struct tc_u32_pcnt +{ + __u64 rcnt; + __u64 rhit; + __u64 kcnts[0]; +}; +/* Flags */ + +#define TC_U32_TERMINAL 1 +#define TC_U32_OFFSET 2 +#define TC_U32_VAROFFSET 4 +#define TC_U32_EAT 8 + +#define TC_U32_MAXDEPTH 8 + + +/* RSVP filter */ + +enum +{ + TCA_RSVP_UNSPEC, + TCA_RSVP_CLASSID, + TCA_RSVP_DST, + TCA_RSVP_SRC, + TCA_RSVP_PINFO, + TCA_RSVP_POLICE, + __TCA_RSVP_MAX +}; + +#define TCA_RSVP_MAX (__TCA_RSVP_MAX - 1 ) + +struct tc_rsvp_gpi +{ + __u32 key; + __u32 mask; + int offset; +}; + +struct tc_rsvp_pinfo +{ + struct tc_rsvp_gpi dpi; + struct tc_rsvp_gpi spi; + __u8 protocol; + __u8 tunnelid; + __u8 tunnelhdr; +}; + +/* ROUTE filter */ + +enum +{ + TCA_ROUTE4_UNSPEC, + TCA_ROUTE4_CLASSID, + TCA_ROUTE4_TO, + TCA_ROUTE4_FROM, + TCA_ROUTE4_IIF, + TCA_ROUTE4_POLICE, + __TCA_ROUTE4_MAX +}; + +#define TCA_ROUTE4_MAX (__TCA_ROUTE4_MAX - 1) + + +/* FW filter */ + +enum +{ + TCA_FW_UNSPEC, + TCA_FW_CLASSID, + TCA_FW_POLICE, + TCA_FW_INDEV, /* used by CONFIG_NET_CLS_IND */ + TCA_FW_ACT, /* used by CONFIG_NET_CLS_ACT */ + __TCA_FW_MAX +}; + +#define TCA_FW_MAX (__TCA_FW_MAX - 1) + +/* TC index filter */ + +enum +{ + TCA_TCINDEX_UNSPEC, + TCA_TCINDEX_HASH, + TCA_TCINDEX_MASK, + TCA_TCINDEX_SHIFT, + TCA_TCINDEX_FALL_THROUGH, + TCA_TCINDEX_CLASSID, + TCA_TCINDEX_POLICE, + __TCA_TCINDEX_MAX +}; + +#define TCA_TCINDEX_MAX (__TCA_TCINDEX_MAX - 1) + +#endif diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h new file mode 100644 index 0000000..60ffcb9 --- /dev/null +++ b/include/linux/pkt_sched.h @@ -0,0 +1,464 @@ +#ifndef __LINUX_PKT_SCHED_H +#define __LINUX_PKT_SCHED_H + +/* Logical priority bands not depending on specific packet scheduler. + Every scheduler will map them to real traffic classes, if it has + no more precise mechanism to classify packets. + + These numbers have no special meaning, though their coincidence + with obsolete IPv6 values is not occasional :-). New IPv6 drafts + preferred full anarchy inspired by diffserv group. + + Note: TC_PRIO_BESTEFFORT does not mean that it is the most unhappy + class, actually, as rule it will be handled with more care than + filler or even bulk. + */ + +#define TC_PRIO_BESTEFFORT 0 +#define TC_PRIO_FILLER 1 +#define TC_PRIO_BULK 2 +#define TC_PRIO_INTERACTIVE_BULK 4 +#define TC_PRIO_INTERACTIVE 6 +#define TC_PRIO_CONTROL 7 + +#define TC_PRIO_MAX 15 + +/* Generic queue statistics, available for all the elements. + Particular schedulers may have also their private records. + */ + +struct tc_stats +{ + __u64 bytes; /* NUmber of enqueues bytes */ + __u32 packets; /* Number of enqueued packets */ + __u32 drops; /* Packets dropped because of lack of resources */ + __u32 overlimits; /* Number of throttle events when this + * flow goes out of allocated bandwidth */ + __u32 bps; /* Current flow byte rate */ + __u32 pps; /* Current flow packet rate */ + __u32 qlen; + __u32 backlog; +}; + +struct tc_estimator +{ + signed char interval; + unsigned char ewma_log; +}; + +/* "Handles" + --------- + + All the traffic control objects have 32bit identifiers, or "handles". + + They can be considered as opaque numbers from user API viewpoint, + but actually they always consist of two fields: major and + minor numbers, which are interpreted by kernel specially, + that may be used by applications, though not recommended. + + F.e. qdisc handles always have minor number equal to zero, + classes (or flows) have major equal to parent qdisc major, and + minor uniquely identifying class inside qdisc. + + Macros to manipulate handles: + */ + +#define TC_H_MAJ_MASK (0xFFFF0000U) +#define TC_H_MIN_MASK (0x0000FFFFU) +#define TC_H_MAJ(h) ((h)&TC_H_MAJ_MASK) +#define TC_H_MIN(h) ((h)&TC_H_MIN_MASK) +#define TC_H_MAKE(maj,min) (((maj)&TC_H_MAJ_MASK)|((min)&TC_H_MIN_MASK)) + +#define TC_H_UNSPEC (0U) +#define TC_H_ROOT (0xFFFFFFFFU) +#define TC_H_INGRESS (0xFFFFFFF1U) + +struct tc_ratespec +{ + unsigned char cell_log; + unsigned char __reserved; + unsigned short feature; + short addend; + unsigned short mpu; + __u32 rate; +}; + +/* FIFO section */ + +struct tc_fifo_qopt +{ + __u32 limit; /* Queue length: bytes for bfifo, packets for pfifo */ +}; + +/* PRIO section */ + +#define TCQ_PRIO_BANDS 16 + +struct tc_prio_qopt +{ + int bands; /* Number of bands */ + __u8 priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> PRIO band */ +}; + +/* TBF section */ + +struct tc_tbf_qopt +{ + struct tc_ratespec rate; + struct tc_ratespec peakrate; + __u32 limit; + __u32 buffer; + __u32 mtu; +}; + +enum +{ + TCA_TBF_UNSPEC, + TCA_TBF_PARMS, + TCA_TBF_RTAB, + TCA_TBF_PTAB, + __TCA_TBF_MAX, +}; + +#define TCA_TBF_MAX (__TCA_TBF_MAX - 1) + + +/* TEQL section */ + +/* TEQL does not require any parameters */ + +/* SFQ section */ + +struct tc_sfq_qopt +{ + unsigned quantum; /* Bytes per round allocated to flow */ + int perturb_period; /* Period of hash perturbation */ + __u32 limit; /* Maximal packets in queue */ + unsigned divisor; /* Hash divisor */ + unsigned flows; /* Maximal number of flows */ +}; + +/* + * NOTE: limit, divisor and flows are hardwired to code at the moment. + * + * limit=flows=128, divisor=1024; + * + * The only reason for this is efficiency, it is possible + * to change these parameters in compile time. + */ + +/* RED section */ + +enum +{ + TCA_RED_UNSPEC, + TCA_RED_PARMS, + TCA_RED_STAB, + __TCA_RED_MAX, +}; + +#define TCA_RED_MAX (__TCA_RED_MAX - 1) + +struct tc_red_qopt +{ + __u32 limit; /* HARD maximal queue length (bytes) */ + __u32 qth_min; /* Min average length threshold (bytes) */ + __u32 qth_max; /* Max average length threshold (bytes) */ + unsigned char Wlog; /* log(W) */ + unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */ + unsigned char Scell_log; /* cell size for idle damping */ + unsigned char flags; +#define TC_RED_ECN 1 +}; + +struct tc_red_xstats +{ + __u32 early; /* Early drops */ + __u32 pdrop; /* Drops due to queue limits */ + __u32 other; /* Drops due to drop() calls */ + __u32 marked; /* Marked packets */ +}; + +/* GRED section */ + +#define MAX_DPs 16 + +enum +{ + TCA_GRED_UNSPEC, + TCA_GRED_PARMS, + TCA_GRED_STAB, + TCA_GRED_DPS, + __TCA_GRED_MAX, +}; + +#define TCA_GRED_MAX (__TCA_GRED_MAX - 1) + +#define TCA_SET_OFF TCA_GRED_PARMS +struct tc_gred_qopt +{ + __u32 limit; /* HARD maximal queue length (bytes) +*/ + __u32 qth_min; /* Min average length threshold (bytes) +*/ + __u32 qth_max; /* Max average length threshold (bytes) +*/ + __u32 DP; /* upto 2^32 DPs */ + __u32 backlog; + __u32 qave; + __u32 forced; + __u32 early; + __u32 other; + __u32 pdrop; + + unsigned char Wlog; /* log(W) */ + unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */ + unsigned char Scell_log; /* cell size for idle damping */ + __u8 prio; /* prio of this VQ */ + __u32 packets; + __u32 bytesin; +}; +/* gred setup */ +struct tc_gred_sopt +{ + __u32 DPs; + __u32 def_DP; + __u8 grio; + __u8 pad1; + __u16 pad2; +}; + +/* HTB section */ +#define TC_HTB_NUMPRIO 8 +#define TC_HTB_MAXDEPTH 8 +#define TC_HTB_PROTOVER 3 /* the same as HTB and TC's major */ + +struct tc_htb_opt +{ + struct tc_ratespec rate; + struct tc_ratespec ceil; + __u32 buffer; + __u32 cbuffer; + __u32 quantum; + __u32 level; /* out only */ + __u32 prio; +}; +struct tc_htb_glob +{ + __u32 version; /* to match HTB/TC */ + __u32 rate2quantum; /* bps->quantum divisor */ + __u32 defcls; /* default class number */ + __u32 debug; /* debug flags */ + + /* stats */ + __u32 direct_pkts; /* count of non shapped packets */ +}; +enum +{ + TCA_HTB_UNSPEC, + TCA_HTB_PARMS, + TCA_HTB_INIT, + TCA_HTB_CTAB, + TCA_HTB_RTAB, + __TCA_HTB_MAX, +}; + +#define TCA_HTB_MAX (__TCA_HTB_MAX - 1) + +struct tc_htb_xstats +{ + __u32 lends; + __u32 borrows; + __u32 giants; /* too big packets (rate will not be accurate) */ + __u32 tokens; + __u32 ctokens; +}; + +/* HFSC section */ + +struct tc_hfsc_qopt +{ + __u16 defcls; /* default class */ +}; + +struct tc_service_curve +{ + __u32 m1; /* slope of the first segment in bps */ + __u32 d; /* x-projection of the first segment in us */ + __u32 m2; /* slope of the second segment in bps */ +}; + +struct tc_hfsc_stats +{ + __u64 work; /* total work done */ + __u64 rtwork; /* work done by real-time criteria */ + __u32 period; /* current period */ + __u32 level; /* class level in hierarchy */ +}; + +enum +{ + TCA_HFSC_UNSPEC, + TCA_HFSC_RSC, + TCA_HFSC_FSC, + TCA_HFSC_USC, + __TCA_HFSC_MAX, +}; + +#define TCA_HFSC_MAX (__TCA_HFSC_MAX - 1) + + +/* CBQ section */ + +#define TC_CBQ_MAXPRIO 8 +#define TC_CBQ_MAXLEVEL 8 +#define TC_CBQ_DEF_EWMA 5 + +struct tc_cbq_lssopt +{ + unsigned char change; + unsigned char flags; +#define TCF_CBQ_LSS_BOUNDED 1 +#define TCF_CBQ_LSS_ISOLATED 2 + unsigned char ewma_log; + unsigned char level; +#define TCF_CBQ_LSS_FLAGS 1 +#define TCF_CBQ_LSS_EWMA 2 +#define TCF_CBQ_LSS_MAXIDLE 4 +#define TCF_CBQ_LSS_MINIDLE 8 +#define TCF_CBQ_LSS_OFFTIME 0x10 +#define TCF_CBQ_LSS_AVPKT 0x20 + __u32 maxidle; + __u32 minidle; + __u32 offtime; + __u32 avpkt; +}; + +struct tc_cbq_wrropt +{ + unsigned char flags; + unsigned char priority; + unsigned char cpriority; + unsigned char __reserved; + __u32 allot; + __u32 weight; +}; + +struct tc_cbq_ovl +{ + unsigned char strategy; +#define TC_CBQ_OVL_CLASSIC 0 +#define TC_CBQ_OVL_DELAY 1 +#define TC_CBQ_OVL_LOWPRIO 2 +#define TC_CBQ_OVL_DROP 3 +#define TC_CBQ_OVL_RCLASSIC 4 + unsigned char priority2; + __u16 pad; + __u32 penalty; +}; + +struct tc_cbq_police +{ + unsigned char police; + unsigned char __res1; + unsigned short __res2; +}; + +struct tc_cbq_fopt +{ + __u32 split; + __u32 defmap; + __u32 defchange; +}; + +struct tc_cbq_xstats +{ + __u32 borrows; + __u32 overactions; + __s32 avgidle; + __s32 undertime; +}; + +enum +{ + TCA_CBQ_UNSPEC, + TCA_CBQ_LSSOPT, + TCA_CBQ_WRROPT, + TCA_CBQ_FOPT, + TCA_CBQ_OVL_STRATEGY, + TCA_CBQ_RATE, + TCA_CBQ_RTAB, + TCA_CBQ_POLICE, + __TCA_CBQ_MAX, +}; + +#define TCA_CBQ_MAX (__TCA_CBQ_MAX - 1) + +/* dsmark section */ + +enum { + TCA_DSMARK_UNSPEC, + TCA_DSMARK_INDICES, + TCA_DSMARK_DEFAULT_INDEX, + TCA_DSMARK_SET_TC_INDEX, + TCA_DSMARK_MASK, + TCA_DSMARK_VALUE, + __TCA_DSMARK_MAX, +}; + +#define TCA_DSMARK_MAX (__TCA_DSMARK_MAX - 1) + +/* ATM section */ + +enum { + TCA_ATM_UNSPEC, + TCA_ATM_FD, /* file/socket descriptor */ + TCA_ATM_PTR, /* pointer to descriptor - later */ + TCA_ATM_HDR, /* LL header */ + TCA_ATM_EXCESS, /* excess traffic class (0 for CLP) */ + TCA_ATM_ADDR, /* PVC address (for output only) */ + TCA_ATM_STATE, /* VC state (ATM_VS_*; for output only) */ + __TCA_ATM_MAX, +}; + +#define TCA_ATM_MAX (__TCA_ATM_MAX - 1) + +/* Network emulator */ + +enum +{ + TCA_NETEM_UNSPEC, + TCA_NETEM_CORR, + TCA_NETEM_DELAY_DIST, + TCA_NETEM_REORDER, + __TCA_NETEM_MAX, +}; + +#define TCA_NETEM_MAX (__TCA_NETEM_MAX - 1) + +struct tc_netem_qopt +{ + __u32 latency; /* added delay (us) */ + __u32 limit; /* fifo limit (packets) */ + __u32 loss; /* random packet loss (0=none ~0=100%) */ + __u32 gap; /* re-ordering gap (0 for none) */ + __u32 duplicate; /* random packet dup (0=none ~0=100%) */ + __u32 jitter; /* random jitter in latency (us) */ +}; + +struct tc_netem_corr +{ + __u32 delay_corr; /* delay correlation */ + __u32 loss_corr; /* packet loss correlation */ + __u32 dup_corr; /* duplicate correlation */ +}; + +struct tc_netem_reorder +{ + __u32 probability; + __u32 correlation; +}; + +#define NETEM_DIST_SCALE 8192 + +#endif diff --git a/include/netlink-local.h b/include/netlink-local.h new file mode 100644 index 0000000..974b043 --- /dev/null +++ b/include/netlink-local.h @@ -0,0 +1,341 @@ +/* + * netlink-local.h Local Netlink Interface + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_LOCAL_H_ +#define NETLINK_LOCAL_H_ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +/* local header copies */ +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +#include +#include +#include + +struct trans_tbl { + int i; + const char *a; +}; + +#define __ADD(id, name) { .i = id, .a = #name }, + +#define NL_DBG(LVL,FMT,ARG...) \ + do { \ + if (LVL <= nl_debug) \ + fprintf(stderr, "DBG<" #LVL ">: " FMT, ##ARG); \ + } while (0) + +#define BUG() \ + do { \ + fprintf(stderr, "BUG: %s:%d\n", \ + __FILE__, __LINE__); \ + assert(0); \ + } while (0) + +#define RET_ERR(R, E) \ + do { \ + errno = E; \ + return -R; \ + } while (0) + +extern int __nl_error(int, const char *, unsigned int, + const char *, const char *, ...); + +#ifdef NL_ERROR_ASSERT +#include +static inline int __assert_error(const char *file, int line, char *func, + const char *fmt, ...) +{ + va_list args; + fprintf(stderr, "%s:%d:%s: ", file, line, func); + va_start(args, fmt); + vfprintf(stderr, fmt, args); + va_end(args); + fprintf(stderr, "\n"); + assert(0); + return 0; +} +#define nl_error(E, FMT,ARG...) \ + __assert_error(__FILE__, __LINE__, __FUNCTION__, FMT, ##ARG) + +#else +#define nl_error(E, FMT,ARG...) \ + __nl_error(E, __FILE__, __LINE__, __FUNCTION__, FMT, ##ARG); + +#endif + +#define nl_errno(E) nl_error(E, NULL) + + +static inline char *__type2str(int type, char *buf, size_t len, + struct trans_tbl *tbl, size_t tbl_len) +{ + int i; + for (i = 0; i < tbl_len; i++) { + if (tbl[i].i == type) { + snprintf(buf, len, "%s", tbl[i].a); + return buf; + } + } + + snprintf(buf, len, "0x%x", type); + return buf; +} + +static inline char *__flags2str(int flags, char *buf, size_t len, + struct trans_tbl *tbl, size_t tbl_len) +{ + int i; + int tmp = flags; + + memset(buf, 0, len); + + for (i = 0; i < tbl_len; i++) { + if (tbl[i].i & tmp) { + tmp &= ~tbl[i].i; + strncat(buf, tbl[i].a, len - strlen(buf) - 1); + if ((tmp & flags)) + strncat(buf, ",", len - strlen(buf) - 1); + } + } + + return buf; +} + +static inline int __str2type(const char *buf, struct trans_tbl *tbl, + size_t tbl_len) +{ + unsigned long l; + char *end; + int i; + + if (*buf == '\0') + return -1; + + for (i = 0; i < tbl_len; i++) + if (!strcasecmp(tbl[i].a, buf)) + return tbl[i].i; + + l = strtoul(buf, &end, 0); + if (l == ULONG_MAX || *end != '\0') + return -1; + + return (int) l; +} + +static inline int __str2flags(const char *buf, struct trans_tbl *tbl, + size_t tbl_len) +{ + int i, flags = 0, len; + char *p = (char *) buf, *t; + + for (;;) { + if (*p == ' ') + p++; + + t = strchr(p, ','); + len = t ? t - p : strlen(p); + for (i = 0; i < tbl_len; i++) + if (!strncasecmp(tbl[i].a, p, len)) + flags |= tbl[i].i; + + if (!t) + return flags; + + p = ++t; + } + + return 0; +} + + +static inline void dp_new_line(struct nl_dump_params *params, + int line_nr) +{ + if (params->dp_prefix) { + int i; + for (i = 0; i < params->dp_prefix; i++) { + if (params->dp_fd) + fprintf(params->dp_fd, " "); + else if (params->dp_buf) + strncat(params->dp_buf, " ", + params->dp_buflen - + sizeof(params->dp_buf) - 1); + } + } + + if (params->dp_nl_cb) + params->dp_nl_cb(params, line_nr); +} + +static inline void __dp_dump(struct nl_dump_params *parms, const char *fmt, + va_list args) +{ + if (parms->dp_fd) + vfprintf(parms->dp_fd, fmt, args); + else if (parms->dp_buf || parms->dp_cb) { + char *buf = NULL; + vasprintf(&buf, fmt, args); + if (parms->dp_cb) + parms->dp_cb(parms, buf); + else + strncat(parms->dp_buf, buf, + parms->dp_buflen - strlen(parms->dp_buf) - 1); + free(buf); + } +} + +static inline void dp_dump(struct nl_dump_params *parms, const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + __dp_dump(parms, fmt, args); + va_end(args); +} + +static inline void dp_dump_line(struct nl_dump_params *parms, int line, + const char *fmt, ...) +{ + va_list args; + + dp_new_line(parms, line); + + va_start(args, fmt); + __dp_dump(parms, fmt, args); + va_end(args); +} + +static inline void dump_from_ops(struct nl_object *obj, + struct nl_dump_params *params) +{ + int type = params->dp_type; + char buf[64]; + + if (type < 0 || type > NL_DUMP_MAX) + BUG(); + + if (params->dp_dump_msgtype) { + dp_dump_line(params, 0, "%s ", + nl_cache_mngt_type2name(obj->ce_ops, + obj->ce_msgtype, + buf, sizeof(buf))); + params->dp_pre_dump = 1; + } else + dp_new_line(params, 0); + + if (obj->ce_ops->co_dump[type]) + obj->ce_ops->co_dump[type](obj, params); +} + +static inline struct nl_cache *dp_cache(struct nl_object *obj) +{ + if (obj->ce_cache == NULL) + return nl_cache_mngt_require(obj->ce_ops->co_name); + + return obj->ce_cache; +} + +static inline int nl_cb_call(struct nl_cb *cb, int type, struct nl_msg *msg) +{ + return cb->cb_set[type](msg, cb->cb_args[type]); +} + +#define ARRAY_SIZE(X) (sizeof(X) / sizeof((X)[0])) +#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) + +#define __init __attribute__ ((constructor)) +#define __exit __attribute__ ((destructor)) + +#define P_ACCEPT 0 +#define P_IGNORE 0 + +#define NL_COPY_TEMPLATE(TB, PREFIX, BASE, FLAGBASE, IDX, VAR) \ +({ if (TB[PREFIX ##IDX]) { \ + err = NL_COPY_DATA(BASE ##VAR, TB[PREFIX ##IDX]); \ + if (err < 0) \ + return err; \ + BASE ##mask |= FLAGBASE ##IDX; \ + } }) + +#define min(x,y) ({ \ + typeof(x) _x = (x); \ + typeof(y) _y = (y); \ + (void) (&_x == &_y); \ + _x < _y ? _x : _y; }) + +#define max(x,y) ({ \ + typeof(x) _x = (x); \ + typeof(y) _y = (y); \ + (void) (&_x == &_y); \ + _x > _y ? _x : _y; }) + +#define min_t(type,x,y) \ + ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; }) +#define max_t(type,x,y) \ + ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; }) + +extern int nl_cache_parse(struct nl_cache_ops *, struct sockaddr_nl *, + struct nlmsghdr *, struct nl_parser_param *); + + +static inline void rtnl_copy_ratespec(struct rtnl_ratespec *dst, + struct tc_ratespec *src) +{ + dst->rs_cell_log = src->cell_log; + dst->rs_feature = src->feature; + dst->rs_addend = src->addend; + dst->rs_mpu = src->mpu; + dst->rs_rate = src->rate; +} + +static inline void rtnl_rcopy_ratespec(struct tc_ratespec *dst, + struct rtnl_ratespec *src) +{ + dst->cell_log = src->rs_cell_log; + dst->feature = src->rs_feature; + dst->addend = src->rs_addend; + dst->mpu = src->rs_mpu; + dst->rate = src->rs_rate; +} + +#endif diff --git a/include/netlink-tc.h b/include/netlink-tc.h new file mode 100644 index 0000000..475e56b --- /dev/null +++ b/include/netlink-tc.h @@ -0,0 +1,61 @@ +/* + * netlink-tc.h Local Traffic Control Interface + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_TC_PRIV_H_ +#define NETLINK_TC_PRIV_H_ + +#include + +#define TCA_ATTR_HANDLE 0x001 +#define TCA_ATTR_PARENT 0x002 +#define TCA_ATTR_IFINDEX 0x004 +#define TCA_ATTR_KIND 0x008 +#define TCA_ATTR_FAMILY 0x010 +#define TCA_ATTR_INFO 0x020 +#define TCA_ATTR_OPTS 0x040 +#define TCA_ATTR_STATS 0x080 +#define TCA_ATTR_XSTATS 0x100 +#define TCA_ATTR_MAX TCA_ATTR_XSTATS + +extern int tca_parse(struct nlattr **, int, struct rtnl_tca *, + struct nla_policy *); +extern int tca_msg_parser(struct nlmsghdr *, struct rtnl_tca *); +extern void tca_free_data(struct rtnl_tca *); +extern int tca_dump_brief(struct rtnl_tca *, const char *, + struct nl_dump_params *, int); +extern int tca_dump_full(struct rtnl_tca *, struct nl_dump_params *, int); +extern int tca_dump_stats(struct rtnl_tca *, + struct nl_dump_params *, int); +extern int tca_filter(struct rtnl_tca *, struct rtnl_tca *); + +extern void tca_set_ifindex(struct rtnl_tca *, int); +extern int tca_get_ifindex(struct rtnl_tca *); +extern void tca_set_handle(struct rtnl_tca *, uint32_t); +extern uint32_t tca_get_handle(struct rtnl_tca *); +extern void tca_set_parent(struct rtnl_tca *, uint32_t); +extern uint32_t tca_get_parent(struct rtnl_tca *); +extern void tca_set_kind(struct rtnl_tca *, const char *); +extern char *tca_get_kind(struct rtnl_tca *); +extern uint64_t tca_get_stat(struct rtnl_tca *, int ); + +extern struct nl_msg *tca_build_msg(struct rtnl_tca *tca, int type, int flags); + +static inline void *tca_priv(struct rtnl_tca *tca) +{ + return tca->tc_subdata; +} + +static inline void *tca_xstats(struct rtnl_tca *tca) +{ + return tca->tc_xstats->d_data; +} + +#endif diff --git a/include/netlink-types.h b/include/netlink-types.h new file mode 100644 index 0000000..3984026 --- /dev/null +++ b/include/netlink-types.h @@ -0,0 +1,710 @@ +/* + * netlink-types.h Netlink Types (Private) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_LOCAL_TYPES_H_ +#define NETLINK_LOCAL_TYPES_H_ + +#include +#include +#include +#include + +struct nl_cache_ops; + +#define NL_SOCK_BUFSIZE_SET 1 +#define NL_SOCK_PASSCRED 2 + +#define NL_MSG_CRED_PRESENT 1 + +struct nl_handle; +struct nl_object; + +struct nl_cb +{ + nl_recvmsg_msg_cb_t cb_set[NL_CB_TYPE_MAX+1]; + void * cb_args[NL_CB_TYPE_MAX+1]; + + nl_recvmsg_err_cb_t cb_err; + void * cb_err_arg; + + /** May be used to replace nl_recvmsgs with your own implementation + * in all internal calls to nl_recvmsgs. */ + int (*cb_recvmsgs_ow)(struct nl_handle *, + struct nl_cb *); + + /** Overwrite internal calls to nl_recv, must return the number of + * octets read and allocate a buffer for the received data. */ + int (*cb_recv_ow)(struct nl_handle *, + struct sockaddr_nl *, + unsigned char **, + struct ucred **); + + /** Overwrites internal calls to nl_send, must send the netlink + * message. */ + int (*cb_send_ow)(struct nl_handle *, + struct nl_msg *); +}; + +struct nl_handle +{ + struct sockaddr_nl h_local; + struct sockaddr_nl h_peer; + int h_fd; + int h_proto; + unsigned int h_seq_next; + unsigned int h_seq_expect; + int h_flags; + struct nl_cb * h_cb; +}; + +struct nl_cache +{ + struct nl_list_head c_items; + int c_nitems; + int c_iarg1; + int c_iarg2; + struct nl_cache_ops * c_ops; +}; + +struct nl_parser_param; + +struct nl_msgtype +{ + int mt_id; + char * mt_name; +}; + +struct nl_cache_ops +{ + char * co_name; + size_t co_size; + int co_hdrsize; + int co_protocol; + + /** + * Called whenever an update of the cache is required. Must send + * a request message to the kernel requesting a complete dump. + */ + int (*co_request_update)(struct nl_cache *, struct nl_handle *); + + /** + * Called whenever a new object was allocated + */ + void (*co_constructor)(struct nl_object *); + + /** + * Called whenever a object in the cache gets destroyed, must + * free the type specific memory allocations + */ + void (*co_free_data)(struct nl_object *); + + /** + * Called whenever a message was received that needs to be parsed. + * Must parse the message and call the paser callback function + * (nl_parser_param) provided via the argument. + */ + int (*co_msg_parser)(struct sockaddr_nl *, struct nlmsghdr *, void *); + + /** + * Called whenever a dump of a cache object is requested. Must + * dump the specified object to the specified file descriptor + */ + int (*co_dump[NL_DUMP_MAX+1])(struct nl_object *, + struct nl_dump_params *); + + /** + * Must compare the two specified objects and return a non-zero + * value if they match. + */ + int (*co_filter)(struct nl_object *, struct nl_object *); + + + struct nl_cache_ops *co_next; + struct nl_cache *co_major_cache; + struct nl_msgtype co_msgtypes[]; +}; + +#define NLHDR_COMMON \ + int ce_refcnt; \ + struct nl_cache_ops * ce_ops; \ + struct nl_cache * ce_cache; \ + struct nl_object * ce_dataref; \ + struct nl_list_head ce_list; \ + int ce_msgtype; + +struct nl_object +{ + NLHDR_COMMON +}; + +struct nl_parser_param +{ + int (*pp_cb)(struct nl_object *, struct nl_parser_param *); + void * pp_arg; +}; + +struct nl_data +{ + size_t d_size; + void * d_data; +}; + +struct nl_addr +{ + int a_family; + unsigned int a_maxsize; + unsigned int a_len; + int a_prefixlen; + int a_refcnt; + unsigned char a_addr[0]; +}; + +struct nl_msg +{ + int nm_protocol; + int nm_flags; + struct sockaddr_nl nm_src; + struct sockaddr_nl nm_dst; + struct ucred nm_creds; + struct nlmsghdr * nm_nlh; +}; + +struct rtnl_link_map +{ + uint64_t lm_mem_start; + uint64_t lm_mem_end; + uint64_t lm_base_addr; + uint16_t lm_irq; + uint8_t lm_dma; + uint8_t lm_port; +}; + +#define IFQDISCSIZ 32 + +struct rtnl_link +{ + NLHDR_COMMON + + char l_name[IFNAMSIZ]; + + uint32_t l_family; + uint32_t l_arptype; + uint32_t l_index; + uint32_t l_flags; + uint32_t l_change; + uint32_t l_mtu; + uint32_t l_link; + uint32_t l_txqlen; + uint32_t l_weight; + uint32_t l_master; + struct nl_addr *l_addr; + struct nl_addr *l_bcast; + char l_qdisc[IFQDISCSIZ]; + struct rtnl_link_map l_map; + uint64_t l_stats[RTNL_LINK_STATS_MAX+1]; + uint32_t l_mask; + uint32_t l_flag_mask; +}; + +struct rtnl_ncacheinfo +{ + uint32_t nci_confirmed; /**< Time since neighbour validty was last confirmed */ + uint32_t nci_used; /**< Time since neighbour entry was last ued */ + uint32_t nci_updated; /**< Time since last update */ + uint32_t nci_refcnt; /**< Reference counter */ +}; + + +struct rtnl_neigh +{ + NLHDR_COMMON + uint32_t n_family; + uint32_t n_ifindex; + uint16_t n_state; + uint8_t n_flags; + uint8_t n_type; + struct nl_addr *n_lladdr; + struct nl_addr *n_dst; + uint32_t n_probes; + struct rtnl_ncacheinfo n_cacheinfo; + uint32_t n_mask; + uint32_t n_state_mask; + uint32_t n_flag_mask; +}; + + +struct rtnl_addr_cacheinfo +{ + /* Preferred lifetime in seconds */ + uint32_t aci_prefered; + + /* Valid lifetime in seconds */ + uint32_t aci_valid; + + /* Timestamp of creation in 1/100s seince boottime */ + uint32_t aci_cstamp; + + /* Timestamp of last update in 1/100s since boottime */ + uint32_t aci_tstamp; +}; + +struct rtnl_addr +{ + NLHDR_COMMON + + uint8_t a_family; + uint8_t a_prefixlen; + uint8_t a_flags; + uint8_t a_scope; + uint32_t a_ifindex; + + struct nl_addr *a_peer; + struct nl_addr *a_local; + struct nl_addr *a_bcast; + struct nl_addr *a_anycast; + struct nl_addr *a_multicast; + + struct rtnl_addr_cacheinfo a_cacheinfo; + + char a_label[IFNAMSIZ]; + uint32_t a_mask; + uint32_t a_flag_mask; +}; + +struct rtnl_nexthop +{ + uint8_t rtnh_flags; + uint8_t rtnh_flag_mask; + uint8_t rtnh_weight; + /* 1 byte spare */ + uint32_t rtnh_ifindex; + struct nl_addr * rtnh_gateway; + uint32_t rtnh_mask; + + struct nl_list_head rtnh_list; +}; + +struct rtnl_rtcacheinfo +{ + uint32_t rtci_clntref; + uint32_t rtci_last_use; + uint32_t rtci_expires; + int32_t rtci_error; + uint32_t rtci_used; + uint32_t rtci_id; + uint32_t rtci_ts; + uint32_t rtci_tsage; +}; + +struct rtnl_route +{ + NLHDR_COMMON + + uint8_t rt_family; + uint8_t rt_dst_len; + uint8_t rt_src_len; + uint8_t rt_tos; + uint8_t rt_table; + uint8_t rt_protocol; + uint8_t rt_scope; + uint8_t rt_type; + uint32_t rt_flags; + struct nl_addr * rt_dst; + struct nl_addr * rt_src; + char rt_iif[IFNAMSIZ]; + uint32_t rt_oif; + struct nl_addr * rt_gateway; + uint32_t rt_prio; + uint32_t rt_metrics[RTAX_MAX]; + uint32_t rt_metrics_mask; + struct nl_addr * rt_pref_src; + struct nl_list_head rt_nexthops; + realm_t rt_realms; + struct rtnl_rtcacheinfo rt_cacheinfo; + uint32_t rt_mp_algo; + uint32_t rt_flag_mask; + uint32_t rt_mask; +}; + +struct rtnl_rule +{ + NLHDR_COMMON + + uint64_t r_fwmark; + uint32_t r_prio; + uint32_t r_realms; + uint32_t r_table; + uint8_t r_dsfield; + uint8_t r_type; + uint8_t r_family; + uint8_t r_src_len; + uint8_t r_dst_len; + char r_iif[IFNAMSIZ]; + struct nl_addr *r_src; + struct nl_addr *r_dst; + struct nl_addr *r_srcmap; + + uint32_t r_mask; +}; + +struct rtnl_neightbl_parms +{ + /** + * Interface index of the device this parameter set is assigned + * to or 0 for the default set. + */ + uint32_t ntp_ifindex; + + /** + * Number of references to this parameter set. + */ + uint32_t ntp_refcnt; + + /** + * Queue length for pending arp requests, i.e. the number of + * packets which are accepted from other layers while the + * neighbour address is still being resolved + */ + uint32_t ntp_queue_len; + + /** + * Number of requests to send to the user level ARP daemon. + * Specify 0 to disable. + */ + uint32_t ntp_app_probes; + + /** + * Maximum number of retries for unicast solicitation. + */ + uint32_t ntp_ucast_probes; + + /** + * Maximum number of retries for multicast solicitation. + */ + uint32_t ntp_mcast_probes; + + /** + * Base value in milliseconds to ompute reachable time, see RFC2461. + */ + uint64_t ntp_base_reachable_time; + + /** + * Actual reachable time (read-only) + */ + uint64_t ntp_reachable_time; /* secs */ + + /** + * The time in milliseconds between retransmitted Neighbor + * Solicitation messages. + */ + uint64_t ntp_retrans_time; + + /** + * Interval in milliseconds to check for stale neighbour + * entries. + */ + uint64_t ntp_gc_stale_time; /* secs */ + + /** + * Delay in milliseconds for the first time probe if + * the neighbour is reachable. + */ + uint64_t ntp_probe_delay; /* secs */ + + /** + * Maximum delay in milliseconds of an answer to a neighbour + * solicitation message. + */ + uint64_t ntp_anycast_delay; + + /** + * Minimum age in milliseconds before a neighbour entry + * may be replaced. + */ + uint64_t ntp_locktime; + + /** + * Delay in milliseconds before answering to an ARP request + * for which a proxy ARP entry exists. + */ + uint64_t ntp_proxy_delay; + + /** + * Queue length for the delayed proxy arp requests. + */ + uint32_t ntp_proxy_qlen; + + /** + * Mask of available parameter attributes + */ + uint32_t ntp_mask; +}; + +#define NTBLNAMSIZ 32 + +/** + * Neighbour table + * @ingroup neightbl + */ +struct rtnl_neightbl +{ + NLHDR_COMMON + + char nt_name[NTBLNAMSIZ]; + uint32_t nt_family; + uint32_t nt_gc_thresh1; + uint32_t nt_gc_thresh2; + uint32_t nt_gc_thresh3; + uint64_t nt_gc_interval; + struct ndt_config nt_config; + struct rtnl_neightbl_parms nt_parms; + struct ndt_stats nt_stats; + uint32_t nt_mask; +}; + +struct rtnl_ratespec +{ + uint8_t rs_cell_log; + uint16_t rs_feature; + uint16_t rs_addend; + uint16_t rs_mpu; + uint32_t rs_rate; +}; + +struct rtnl_tstats +{ + struct { + uint64_t bytes; + uint64_t packets; + } tcs_basic; + + struct { + uint32_t bps; + uint32_t pps; + } tcs_rate_est; + + struct { + uint32_t qlen; + uint32_t backlog; + uint32_t drops; + uint32_t requeues; + uint32_t overlimits; + } tcs_queue; +}; + +#define TCKINDSIZ 32 + +#define NL_TCA_GENERIC(pre) \ + NLHDR_COMMON \ + uint32_t pre ##_family; \ + uint32_t pre ##_ifindex; \ + uint32_t pre ##_handle; \ + uint32_t pre ##_parent; \ + uint32_t pre ##_info; \ + char pre ##_kind[TCKINDSIZ]; \ + struct nl_data * pre ##_opts; \ + uint64_t pre ##_stats[RTNL_TC_STATS_MAX+1]; \ + struct nl_data * pre ##_xstats; \ + void * pre ##_subdata; \ + int pre ##_mask + + +struct rtnl_tca +{ + NL_TCA_GENERIC(tc); +}; + +struct rtnl_qdisc +{ + NL_TCA_GENERIC(q); + struct rtnl_qdisc_ops *q_ops; +}; + +struct rtnl_class +{ + NL_TCA_GENERIC(c); + struct rtnl_class_ops *c_ops; +}; + +struct rtnl_cls +{ + NL_TCA_GENERIC(c); + uint32_t c_prio; + uint32_t c_protocol; + struct rtnl_cls_ops *c_ops; +}; + +struct rtnl_u32 +{ + uint32_t cu_divisor; + uint32_t cu_hash; + uint32_t cu_classid; + uint32_t cu_link; + struct nl_data * cu_pcnt; + struct nl_data * cu_selector; + struct nl_data * cu_act; + struct nl_data * cu_police; + char cu_indev[IFNAMSIZ]; + int cu_mask; +}; + +struct rtnl_fw +{ + uint32_t cf_classid; + struct nl_data * cf_act; + struct nl_data * cf_police; + char cf_indev[IFNAMSIZ]; + int cf_mask; +}; + +struct rtnl_dsmark_qdisc +{ + uint16_t qdm_indices; + uint16_t qdm_default_index; + uint32_t qdm_set_tc_index; + uint32_t qdm_mask; +}; + +struct rtnl_dsmark_class +{ + uint8_t cdm_bmask; + uint8_t cdm_value; + uint32_t cdm_mask; +}; + +struct rtnl_fifo +{ + uint32_t qf_limit; + uint32_t qf_mask; +}; + +struct rtnl_prio +{ + uint32_t qp_bands; + uint8_t qp_priomap[TC_PRIO_MAX+1]; + uint32_t qp_mask; +}; + +struct rtnl_tbf +{ + uint32_t qt_limit; + uint32_t qt_mpu; + struct rtnl_ratespec qt_rate; + uint32_t qt_rate_bucket; + uint32_t qt_rate_txtime; + struct rtnl_ratespec qt_peakrate; + uint32_t qt_peakrate_bucket; + uint32_t qt_peakrate_txtime; + uint32_t qt_mask; +}; + +struct rtnl_sfq +{ + uint32_t qs_quantum; + uint32_t qs_perturb; + uint32_t qs_limit; + uint32_t qs_divisor; + uint32_t qs_flows; + uint32_t qs_mask; +}; + +struct rtnl_netem_corr +{ + uint32_t nmc_delay; + uint32_t nmc_loss; + uint32_t nmc_duplicate; +}; + +struct rtnl_netem_reo +{ + uint32_t nmro_probability; + uint32_t nmro_correlation; +}; + +struct rtnl_netem +{ + uint32_t qnm_latency; + uint32_t qnm_limit; + uint32_t qnm_loss; + uint32_t qnm_gap; + uint32_t qnm_duplicate; + uint32_t qnm_jitter; + uint32_t qnm_mask; + struct rtnl_netem_corr qnm_corr; + struct rtnl_netem_reo qnm_ro; +}; + +struct rtnl_htb_qdisc +{ + uint32_t qh_rate2quantum; + uint32_t qh_defcls; + uint32_t qh_mask; +}; + +struct rtnl_htb_class +{ + uint32_t ch_prio; + uint32_t ch_mtu; + struct rtnl_ratespec ch_rate; + struct rtnl_ratespec ch_ceil; + uint32_t ch_rbuffer; + uint32_t ch_cbuffer; + uint32_t ch_mask; +}; + +struct rtnl_cbq +{ + struct tc_cbq_lssopt cbq_lss; + struct tc_ratespec cbq_rate; + struct tc_cbq_wrropt cbq_wrr; + struct tc_cbq_ovl cbq_ovl; + struct tc_cbq_fopt cbq_fopt; + struct tc_cbq_police cbq_police; +}; + +struct rtnl_red +{ + uint32_t qr_limit; + uint32_t qr_qth_min; + uint32_t qr_qth_max; + uint8_t qr_flags; + uint8_t qr_wlog; + uint8_t qr_plog; + uint8_t qr_scell_log; + uint32_t qr_mask; +}; + +struct flnl_request +{ + struct nl_addr * lr_addr; + uint32_t lr_fwmark; + uint8_t lr_tos; + uint8_t lr_scope; + uint8_t lr_table; + uint32_t lr_mask; + int lr_refcnt; +}; + + +struct flnl_result +{ + NLHDR_COMMON + + struct flnl_request * fr_req; + uint8_t fr_table_id; + uint8_t fr_prefixlen; + uint8_t fr_nh_sel; + uint8_t fr_type; + uint8_t fr_scope; + uint32_t fr_error; +}; + +#endif diff --git a/include/netlink/addr.h b/include/netlink/addr.h new file mode 100644 index 0000000..99caa7b --- /dev/null +++ b/include/netlink/addr.h @@ -0,0 +1,56 @@ +/* + * netlink/addr.h Abstract Address + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_ADDR_H_ +#define NETLINK_ADDR_H_ + +#include + +struct nl_addr; + +/* Creation */ +extern struct nl_addr * nl_addr_alloc(size_t); +extern struct nl_addr * nl_addr_build(int, void *, size_t); +extern struct nl_addr * nl_addr_parse(const char *, int); +extern struct nl_addr * nl_addr_clone(struct nl_addr *); + +/* Destroyage */ +extern void nl_addr_destroy(struct nl_addr *); + +/* Usage Management */ +extern struct nl_addr * nl_addr_get(struct nl_addr *); +extern void nl_addr_put(struct nl_addr *); +extern int nl_addr_shared(struct nl_addr *); + +extern int nl_addr_cmp(struct nl_addr *, struct nl_addr *); +extern int nl_addr_valid(char *, int); +extern int nl_addr_guess_family(struct nl_addr *); +extern struct addrinfo *nl_addr_info(struct nl_addr *addr); +extern int nl_addr_resolve(struct nl_addr *addr, char *host, size_t hostlen); + +/* Access Functions */ +extern void nl_addr_set_family(struct nl_addr *, int); +extern int nl_addr_get_family(struct nl_addr *); +extern int nl_addr_set_binary_addr(struct nl_addr *, void *, + size_t); +extern void * nl_addr_get_binary_addr(struct nl_addr *); +extern unsigned int nl_addr_get_len(struct nl_addr *); +extern void nl_addr_set_prefixlen(struct nl_addr *, int); +extern unsigned int nl_addr_get_prefixlen(struct nl_addr *); + +/* Address Family Translations */ +extern char * nl_af2str(char, char *, size_t); +extern char nl_str2af(const char *); + +/* Translations to Strings */ +extern char * nl_addr2str(struct nl_addr *, char *, size_t); + +#endif diff --git a/include/netlink/attr.h b/include/netlink/attr.h new file mode 100644 index 0000000..ecf3574 --- /dev/null +++ b/include/netlink/attr.h @@ -0,0 +1,265 @@ +/* + * netlink/attr.h Netlink Attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_ATTR_H_ +#define NETLINK_ATTR_H_ + +#include +#include +#include +#include + +struct nl_msg; + +/** + * @name Validation Policy Types + * @{ + */ + + /** + * @ingroup attr + * Standard attribute types to specify validation policy + */ +enum { + NLA_UNSPEC, /**< Unspecified type */ + NLA_U8, /**< 8bit integer */ + NLA_U16, /**< 16bit integer */ + NLA_U32, /**< 32bit integer */ + NLA_U64, /**< 64bit integer */ + NLA_STRING, /**< character string */ + NLA_FLAG, /**< flag */ + NLA_MSECS, /**< micro seconds (64bit) */ + NLA_NESTED, /**< nested attributes */ + __NLA_TYPE_MAX, +}; + +/** + * @ingroup attr + * Maximum netlink validation policy type + */ +#define NLA_TYPE_MAX (__NLA_TYPE_MAX - 1) + +/** @} */ + +/** + * @ingroup attr + * attribute validation policy + * + * Policies are defined as arrays of this struct, the array must + * be accessible by attribute type up to the highest identifier + * to be expected. + * + * Example: + * @code + * static struct nla_policy my_policy[ATTR_MAX+1] __read_mostly = { + * [ATTR_FOO] = { .type = NLA_U16 }, + * [ATTR_BAR] = { .type = NLA_STRING }, + * [ATTR_BAZ] = { .minlen = sizeof(struct mystruct) }, + * }; + * @endcode + */ +struct nla_policy { + /** Type of attribute or NLA_UNSPEC */ + uint16_t type; + + /** Minimal length of payload required to be available */ + uint16_t minlen; + + /** Maximal length of payload required to be available */ + uint16_t maxlen; +}; + +/* size calculations */ +extern int nla_attr_size(int payload); +extern int nla_total_size(int payload); +extern int nla_padlen(int payload); + +/* payload access */ +extern void * nla_data(const struct nlattr *); +extern int nla_len(const struct nlattr *); + +/* attribute parsing */ +extern int nla_ok(const struct nlattr *, int); +extern struct nlattr * nla_next(const struct nlattr *, int *); +extern int nla_parse(struct nlattr **, int, struct nlattr *, + int, struct nla_policy *); +extern int nla_parse_nested(struct nlattr **, int, struct nlattr *, + struct nla_policy *); +extern int nla_validate(struct nlattr *, int, int, + struct nla_policy *); +extern struct nlattr * nla_find(struct nlattr *, int, int); + +/* utilities */ +extern int nla_memcpy(void *, struct nlattr *, int); +extern size_t nla_strlcpy(char *, const struct nlattr *, size_t); +extern int nla_memcmp(const struct nlattr *, const void *, size_t); +extern int nla_strcmp(const struct nlattr *, const char *); + +/* attribute construction */ +extern struct nlattr * nla_reserve(struct nl_msg *, int, int); +extern int nla_put(struct nl_msg *, int, int, const void *); +extern int nla_put_nested(struct nl_msg *, int, struct nl_msg *); +extern int nla_put_u8(struct nl_msg *, int, uint8_t); +extern int nla_put_u16(struct nl_msg *, int, uint16_t); +extern int nla_put_u32(struct nl_msg *, int, uint32_t); +extern int nla_put_u64(struct nl_msg *, int, uint64_t); +extern int nla_put_string(struct nl_msg *, int, const char *); +extern int nla_put_flag(struct nl_msg *, int); +extern int nla_put_msecs(struct nl_msg *, int, unsigned long); +extern int nla_put_data(struct nl_msg *, int, struct nl_data *); +extern int nla_put_addr(struct nl_msg *, int, struct nl_addr *); + +/* attribute nesting */ +extern struct nlattr * nla_nest_start(struct nl_msg *, int); +extern int nla_nest_end(struct nl_msg *, struct nlattr *); + +/* attribute reading */ +extern uint8_t nla_get_u8(struct nlattr *); +extern uint16_t nla_get_u16(struct nlattr *); +extern uint32_t nla_get_u32(struct nlattr *); +extern uint64_t nla_get_u64(struct nlattr *); +extern int nla_get_flag(struct nlattr *); +extern unsigned long nla_get_msecs(struct nlattr *); +extern struct nl_data * nla_get_data(struct nlattr *); +extern struct nl_addr * nla_get_addr(struct nlattr *, int); + +/** + * @name Attribute Construction (Exception Based) + * + * All these functions jump to nla_put_failure in case of a failure + * instead of returning an error code. + * + * @{ + */ + +/** + * @ingroup attr + * Add a netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg attrlen length of attribute payload + * @arg data head of attribute payload + */ +#define NLA_PUT(n, attrtype, attrlen, data) \ + do { \ + if (nla_put(n, attrtype, attrlen, data) < 0) \ + goto nla_put_failure; \ + } while(0) + +/** + * @ingroup attr + * Add a basic netlink attribute to a netlink message + * @arg n netlink message + * @arg type atomic type + * @arg attrtype attribute type + * @arg value head of attribute payload + */ +#define NLA_PUT_TYPE(n, type, attrtype, value) \ + do { \ + type __tmp = value; \ + NLA_PUT(n, attrtype, sizeof(type), &__tmp); \ + } while(0) + +/** + * Add a u8 netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg value numeric value + */ +#define NLA_PUT_U8(n, attrtype, value) \ + NLA_PUT_TYPE(n, uint8_t, attrtype, value) + +/** + * Add a u16 netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg value numeric value + */ +#define NLA_PUT_U16(n, attrtype, value) \ + NLA_PUT_TYPE(n, uint16_t, attrtype, value) + +/** + * Add a u32 netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg value numeric value + */ +#define NLA_PUT_U32(n, attrtype, value) \ + NLA_PUT_TYPE(n, uint32_t, attrtype, value) + +/** + * Add a u64 netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg value numeric value + */ +#define NLA_PUT_U64(n, attrtype, value) \ + NLA_PUT_TYPE(n, uint64_t, attrtype, value) + +/** + * Add a character string netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg value character string + */ +#define NLA_PUT_STRING(n, attrtype, value) \ + NLA_PUT(n, attrtype, strlen(value) + 1, value) + +/** + * Add a flag netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + */ +#define NLA_PUT_FLAG(n, attrtype) \ + NLA_PUT(n, attrtype, 0, NULL) + +/** + * Add a msecs netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg msecs numeric value in micro seconds + */ +#define NLA_PUT_MSECS(n, attrtype, msecs) \ + NLA_PUT_U64(n, attrtype, msecs) + +/** + * Add a address attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg addr abstract address object + */ +#define NLA_PUT_ADDR(n, attrtype, addr) \ + NLA_PUT(n, attrtype, nl_addr_get_len(addr), \ + nl_addr_get_binary_addr(addr)) + +/** @} */ + +/** + * @name Iterators + * @{ + */ + +/** + * @ingroup attr + * iterate over a stream of attributes + * @arg pos loop counter, set to current attribute + * @arg head head of attribute stream + * @arg len length of attribute stream + * @arg rem initialized to len, holds bytes currently remaining in stream + */ +#define nla_for_each_attr(pos, head, len, rem) \ + for (pos = head, rem = len; \ + nla_ok(pos, rem); \ + pos = nla_next(pos, &(rem))) + +/** @} */ + +#endif diff --git a/include/netlink/cache.h b/include/netlink/cache.h new file mode 100644 index 0000000..3b48db2 --- /dev/null +++ b/include/netlink/cache.h @@ -0,0 +1,94 @@ +/* + * netlink/cache.h Caching Module + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_CACHE_H_ +#define NETLINK_CACHE_H_ + +#include +#include +#include +#include + +struct nl_cache; +struct nl_cache_ops; + +/* Access Functions */ +extern int nl_cache_nitems(struct nl_cache *); +extern int nl_cache_nitems_filter(struct nl_cache *, + struct nl_object *); +extern struct nl_cache_ops * nl_cache_get_ops(struct nl_cache *); +extern struct nl_object * nl_cache_get_first(struct nl_cache *); +extern struct nl_object * nl_cache_get_last(struct nl_cache *); +extern struct nl_object * nl_cache_get_next(struct nl_object *); +extern struct nl_object * nl_cache_get_prev(struct nl_object *); + +/* Cache creation/deletion */ +extern struct nl_cache * nl_cache_alloc(void); +extern struct nl_cache * nl_cache_alloc_from_ops(struct nl_cache_ops *); +extern struct nl_cache * nl_cache_alloc_name(const char *); +extern void nl_cache_clear(struct nl_cache *); +extern void nl_cache_free(struct nl_cache *); + +/* Cache modification */ +extern int nl_cache_add(struct nl_cache *, + struct nl_object *); +extern int nl_cache_parse_and_add(struct nl_cache *, + struct nl_msg *); +extern void nl_cache_delete(struct nl_cache *, + struct nl_object *); +extern int nl_cache_update(struct nl_handle *, + struct nl_cache *); +extern int nl_cache_pickup(struct nl_handle *, + struct nl_cache *); + +/* General */ +extern int nl_cache_is_empty(struct nl_cache *); + +/* Dumping */ +extern void nl_cache_dump(struct nl_cache *, + struct nl_dump_params *); +extern void nl_cache_dump_filter(struct nl_cache *, + struct nl_dump_params *, + struct nl_object *); + +/* Iterators */ +extern void nl_cache_foreach(struct nl_cache *, + void (*cb)(struct nl_object *, + void *), + void *arg); +extern void nl_cache_foreach_filter(struct nl_cache *, + struct nl_object *, + void (*cb)(struct + nl_object *, + void *), + void *arg); + +/* --- cache management --- */ + +/* Access Functions */ +extern char * nl_cache_ops_get_name(struct nl_cache_ops *); + +/* Message type association */ +extern struct nl_cache_ops * nl_cache_mngt_associate(int, int); +extern char * nl_cache_mngt_type2name(struct nl_cache_ops *, + int, char *, size_t); + +/* Cache type management */ +extern struct nl_cache_ops * nl_cache_mngt_lookup(const char *); +extern int nl_cache_mngt_register(struct nl_cache_ops *); +extern int nl_cache_mngt_unregister(struct nl_cache_ops *); + +/* Global cache provisioning/requiring */ +extern void nl_cache_mngt_provide(struct nl_cache *); +extern void nl_cache_mngt_unprovide(struct nl_cache *); +extern struct nl_cache * nl_cache_mngt_require(const char *); + +#endif diff --git a/include/netlink/data.h b/include/netlink/data.h new file mode 100644 index 0000000..4fcdc21 --- /dev/null +++ b/include/netlink/data.h @@ -0,0 +1,31 @@ +/* + * netlink/data.h Abstract Data + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_DATA_H_ +#define NETLINK_DATA_H_ + +#include + +struct nl_data; + +/* General */ +extern struct nl_data * nl_data_alloc(void *, size_t); +extern int nl_data_append(struct nl_data *, void *, size_t); +extern void nl_data_free(struct nl_data *); + +/* Access Functions */ +extern void * nl_data_get(struct nl_data *); +extern size_t nl_data_get_size(struct nl_data *); + +/* Misc */ +extern int nl_data_cmp(struct nl_data *, struct nl_data *); + +#endif diff --git a/include/netlink/fib_lookup/lookup.h b/include/netlink/fib_lookup/lookup.h new file mode 100644 index 0000000..a7b995e --- /dev/null +++ b/include/netlink/fib_lookup/lookup.h @@ -0,0 +1,33 @@ +/* + * netlink/fib_lookup/fib_lookup.h FIB Lookup + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_FIB_LOOKUP_H_ +#define NETLINK_FIB_LOOKUP_H_ + +#include +#include +#include +#include + +struct flnl_result; + +extern struct flnl_result * flnl_result_alloc(void); +extern struct nl_cache * flnl_result_alloc_cache(void); +extern void flnl_result_put(struct flnl_result *); +extern void flnl_result_free(struct flnl_result *); + +extern struct nl_msg * flnl_lookup_build_request(struct flnl_request *, + int); +extern int flnl_lookup(struct nl_handle *, + struct flnl_request *, + struct nl_cache *); + +#endif diff --git a/include/netlink/fib_lookup/request.h b/include/netlink/fib_lookup/request.h new file mode 100644 index 0000000..64c912b --- /dev/null +++ b/include/netlink/fib_lookup/request.h @@ -0,0 +1,45 @@ +/* + * netlink/fib_lookup/request.h FIB Lookup Request + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_FIB_LOOKUP_REQUEST_H_ +#define NETLINK_FIB_LOOKUP_REQUEST_H_ + +#include +#include + +struct flnl_request; + +extern struct flnl_request * flnl_request_alloc(void); + +extern struct flnl_request * flnl_request_get(struct flnl_request *); +extern void flnl_request_put(struct flnl_request *); +extern void flnl_request_free(struct flnl_request *); + +extern void flnl_request_set_fwmark(struct flnl_request *, + uint64_t); +extern uint64_t flnl_request_get_fwmark(struct flnl_request *); +extern void flnl_request_set_tos(struct flnl_request *, + int); +extern int flnl_request_get_tos(struct flnl_request *); +extern void flnl_request_set_scope(struct flnl_request *, + int); +extern int flnl_request_get_scope(struct flnl_request *); +extern void flnl_request_set_table(struct flnl_request *, + int); +extern int flnl_request_get_table(struct flnl_request *); +extern int flnl_request_set_addr(struct flnl_request *, + struct nl_addr *); +extern struct nl_addr * flnl_request_get_addr(struct flnl_request *); + +extern int flnl_request_cmp(struct flnl_request *, + struct flnl_request *); + +#endif diff --git a/include/netlink/handlers.h b/include/netlink/handlers.h new file mode 100644 index 0000000..dd02c64 --- /dev/null +++ b/include/netlink/handlers.h @@ -0,0 +1,134 @@ +/* + * netlink/handlers.c default netlink message handlers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_HANDLERS_H_ +#define NETLINK_HANDLERS_H_ + +#include +#include +#include +#include +#include + +struct nl_cb; +struct nl_handle; +struct nl_msg; + +/** + * @name Callback Typedefs + * @{ + */ + +/** + * nl_recvmsgs() callback for message processing customization + * @ingroup cb + * @arg msg netlink message being processed + * @arg arg argument passwd on through caller + */ +typedef int (*nl_recvmsg_msg_cb_t)(struct nl_msg *msg, void *arg); + +/** + * nl_recvmsgs() callback for error message processing customization + * @ingroup cb + * @arg nla netlink address of the peer + * @arg nlerr netlink error message being processed + * @arg arg argument passed on through caller + */ +typedef int (*nl_recvmsg_err_cb_t)(struct sockaddr_nl *nla, + struct nlmsgerr *nlerr, void *arg); + +/** @} */ + +/** + * Callback actions + * @ingroup cb + */ +enum nl_cb_action { + /** Proceed with wathever would come next */ + NL_PROCEED, + /** Skip this message */ + NL_SKIP, + /** Stop parsing altogether and discard remaining messages */ + NL_EXIT, +}; + +/** + * Callback kinds + * @ingroup cb + */ +enum nl_cb_kind { + /** Default handlers (quiet) */ + NL_CB_DEFAULT, + /** Verbose default handlers (error messages printed) */ + NL_CB_VERBOSE, + /** Debug handlers for debugging */ + NL_CB_DEBUG, + /** Customized handler specified by the user */ + NL_CB_CUSTOM, + __NL_CB_KIND_MAX, +}; + +#define NL_CB_KIND_MAX (__NL_CB_KIND_MAX - 1) + +/** + * Callback types + * @ingroup cb + */ +enum nl_cb_type { + /** Message is valid */ + NL_CB_VALID, + /** Last message in a series of multi part messages received */ + NL_CB_FINISH, + /** Report received that data was lost */ + NL_CB_OVERRUN, + /** Message wants to be skipped */ + NL_CB_SKIPPED, + /** Message is an acknowledge */ + NL_CB_ACK, + /** Called for every message received */ + NL_CB_MSG_IN, + /** Called for every message sent out except for nl_sendto() */ + NL_CB_MSG_OUT, + /** Message is malformed and invalid */ + NL_CB_INVALID, + /** Called instead of internal sequence number checking */ + NL_CB_SEQ_CHECK, + /** Sending of an acknowledge message has been requested */ + NL_CB_SEND_ACK, + __NL_CB_TYPE_MAX, +}; + +#define NL_CB_TYPE_MAX (__NL_CB_TYPE_MAX - 1) + +extern struct nl_cb * nl_cb_new(enum nl_cb_kind); +extern void nl_cb_destroy(struct nl_cb *); +extern struct nl_cb * nl_cb_clone(struct nl_cb *); + +extern int nl_cb_set(struct nl_cb *, enum nl_cb_type, enum nl_cb_kind, + nl_recvmsg_msg_cb_t, void *); +extern int nl_cb_set_all(struct nl_cb *, enum nl_cb_kind, + nl_recvmsg_msg_cb_t, void *); +extern int nl_cb_err(struct nl_cb *, enum nl_cb_kind, nl_recvmsg_err_cb_t, + void *); + +extern void nl_cb_overwrite_recvmsgs(struct nl_cb *, + int (*func)(struct nl_handle *, + struct nl_cb *)); +extern void nl_cb_overwrite_recv(struct nl_cb *, + int (*func)(struct nl_handle *, + struct sockaddr_nl *, + unsigned char **, + struct ucred **)); +extern void nl_cb_overwrite_send(struct nl_cb *, + int (*func)(struct nl_handle *, + struct nl_msg *)); + +#endif diff --git a/include/netlink/list.h b/include/netlink/list.h new file mode 100644 index 0000000..dbfc3de --- /dev/null +++ b/include/netlink/list.h @@ -0,0 +1,82 @@ +/* + * netlink/list.h Netlink List Utilities + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_LIST_H_ +#define NETLINK_LIST_H_ + +struct nl_list_head +{ + struct nl_list_head * next; + struct nl_list_head * prev; +}; + + +static inline void __nl_list_add(struct nl_list_head *obj, + struct nl_list_head *prev, + struct nl_list_head *next) +{ + prev->next = obj; + obj->prev = prev; + next->prev = obj; + obj->next = next; +} + +static inline void nl_list_add_tail(struct nl_list_head *obj, + struct nl_list_head *head) +{ + __nl_list_add(obj, head->prev, head); +} + +static inline void nl_list_add_head(struct nl_list_head *obj, + struct nl_list_head *head) +{ + __nl_list_add(obj, head, head->next); +} + +static inline void nl_list_del(struct nl_list_head *obj) +{ + obj->next->prev = obj->prev; + obj->prev->next = obj->next; +} + +static inline int nl_list_empty(struct nl_list_head *head) +{ + return head->next == head; +} + +#define nl_container_of(ptr, type, member) ({ \ + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - ((size_t) &((type *)0)->member));}) + +#define nl_list_entry(ptr, type, member) \ + nl_container_of(ptr, type, member) + +#define nl_list_at_tail(pos, head, member) \ + ((pos)->member.next == (head)) + +#define nl_list_at_head(pos, head, member) \ + ((pos)->member.prev == (head)) + +#define nl_list_for_each_entry(pos, head, member) \ + for (pos = nl_list_entry((head)->next, typeof(*pos), member); \ + &(pos)->member != (head); \ + (pos) = nl_list_entry((pos)->member.next, typeof(*(pos)), member)) + +#define nl_list_for_each_entry_safe(pos, n, head, member) \ + for (pos = nl_list_entry((head)->next, typeof(*pos), member), \ + n = nl_list_entry(pos->member.next, typeof(*pos), member); \ + &(pos)->member != (head); \ + pos = n, n = nl_list_entry(n->member.next, typeof(*n), member)) + +#define nl_init_list_head(head) \ + do { (head)->next = (head); (head)->prev = (head); } while (0) + +#endif diff --git a/include/netlink/msg.h b/include/netlink/msg.h new file mode 100644 index 0000000..fa96ccb --- /dev/null +++ b/include/netlink/msg.h @@ -0,0 +1,106 @@ +/* + * netlink/msg.c Netlink Messages Interface + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_MSG_H_ +#define NETLINK_MSG_H_ + +#include +#include +#include + +struct nl_msg; +struct nl_tree; +struct ucred; + +/* size calculations */ +extern int nlmsg_msg_size(int); +extern int nlmsg_total_size(int); +extern int nlmsg_padlen(int); + +/* payload access */ +extern void * nlmsg_data(const struct nlmsghdr *); +extern int nlmsg_len(const struct nlmsghdr *); +extern void * nlmsg_tail(const struct nlmsghdr *); + +/* attribute access */ +extern struct nlattr * nlmsg_attrdata(const struct nlmsghdr *, int); +extern int nlmsg_attrlen(const struct nlmsghdr *, int); + +/* message parsing */ +extern int nlmsg_ok(const struct nlmsghdr *, int); +extern struct nlmsghdr * nlmsg_next(struct nlmsghdr *, int *); +extern int nlmsg_parse(struct nlmsghdr *, int, struct nlattr **, + int, struct nla_policy *); +extern struct nlattr * nlmsg_find_attr(struct nlmsghdr *, int, int); +extern int nlmsg_validate(struct nlmsghdr *, int, int, + struct nla_policy *); + +extern struct nl_msg * nlmsg_new(void); +extern struct nl_msg * nlmsg_build(struct nlmsghdr *); +extern struct nl_msg * nlmsg_build_simple(int, int); +extern struct nl_msg * nlmsg_build_no_hdr(void); +extern struct nl_msg * nlmsg_convert(struct nlmsghdr *); +extern int nlmsg_append(struct nl_msg *, void *, size_t, int); + +extern struct nlmsghdr * nlmsg_hdr(struct nl_msg *); +extern void nlmsg_free(struct nl_msg *); + +/* attribute modification */ +extern void nlmsg_set_proto(struct nl_msg *, int); +extern int nlmsg_get_proto(struct nl_msg *); +extern void nlmsg_set_src(struct nl_msg *, struct sockaddr_nl *); +extern struct sockaddr_nl *nlmsg_get_src(struct nl_msg *); +extern void nlmsg_set_dst(struct nl_msg *, struct sockaddr_nl *); +extern struct sockaddr_nl *nlmsg_get_dst(struct nl_msg *); +extern void nlmsg_set_creds(struct nl_msg *, struct ucred *); +extern struct ucred * nlmsg_get_creds(struct nl_msg *); + +extern char * nl_nlmsgtype2str(int, char *, size_t); +extern int nl_str2nlmsgtype(const char *); + +extern char * nl_nlmsg_flags2str(int, char *, size_t); + +extern int nl_msg_parse(struct nl_msg *, + void (*cb)(struct nl_object *, void *), + void *); + +/** + * @name Iterators + * @{ + */ + +/** + * @ingroup msg + * Iterate over a stream of attributes in a message + * @arg pos loop counter, set to current attribute + * @arg nlh netlink message header + * @arg hdrlen length of family header + * @arg rem initialized to len, holds bytes currently remaining in stream + */ +#define nlmsg_for_each_attr(pos, nlh, hdrlen, rem) \ + nla_for_each_attr(pos, nlmsg_attrdata(nlh, hdrlen), \ + nlmsg_attrlen(nlh, hdrlen), rem) + +/** + * Iterate over a stream of messages + * @arg pos loop counter, set to current message + * @arg head head of message stream + * @arg len length of message stream + * @arg rem initialized to len, holds bytes currently remaining in stream + */ +#define nlmsg_for_each_msg(pos, head, len, rem) \ + for (pos = head, rem = len; \ + nlmsg_ok(pos, rem); \ + pos = nlmsg_next(pos, &(rem))) + +/** @} */ + +#endif diff --git a/include/netlink/netlink-compat.h b/include/netlink/netlink-compat.h new file mode 100644 index 0000000..17ec9fc --- /dev/null +++ b/include/netlink/netlink-compat.h @@ -0,0 +1,50 @@ +/* + * netlink/netlink-compat.h Netlink Compatability + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_COMPAT_H_ +#define NETLINK_COMPAT_H_ + +#if !defined _LINUX_SOCKET_H && !defined _BITS_SOCKADDR_H +typedef unsigned short sa_family_t; +#endif + +#ifndef IFNAMSIZ +/** Maximum length of a interface name */ +#define IFNAMSIZ 16 +#endif + +/* patch 2.4.x if_arp */ +#ifndef ARPHRD_INFINIBAND +#define ARPHRD_INFINIBAND 32 +#endif + +/* patch 2.4.x eth header file */ +#ifndef ETH_P_MPLS_UC +#define ETH_P_MPLS_UC 0x8847 +#endif + +#ifndef ETH_P_MPLS_MC +#define ETH_P_MPLS_MC 0x8848 +#endif + +#ifndef ETH_P_EDP2 +#define ETH_P_EDP2 0x88A2 +#endif + +#ifndef ETH_P_HDLC +#define ETH_P_HDLC 0x0019 +#endif + +#ifndef AF_LLC +#define AF_LLC 26 +#endif + +#endif diff --git a/include/netlink/netlink-kernel.h b/include/netlink/netlink-kernel.h new file mode 100644 index 0000000..134710d --- /dev/null +++ b/include/netlink/netlink-kernel.h @@ -0,0 +1,242 @@ +#ifndef __LINUX_NETLINK_H +#define __LINUX_NETLINK_H + +#define NETLINK_ROUTE 0 /* Routing/device hook */ +#define NETLINK_W1 1 /* 1-wire subsystem */ +#define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */ +#define NETLINK_FIREWALL 3 /* Firewalling hook */ +#define NETLINK_INET_DIAG 4 /* INET socket monitoring */ +#define NETLINK_TCPDIAG NETLINK_INET_DIAG +#define NETLINK_NFLOG 5 /* netfilter/iptables ULOG */ +#define NETLINK_XFRM 6 /* ipsec */ +#define NETLINK_SELINUX 7 /* SELinux event notifications */ +#define NETLINK_ISCSI 8 /* Open-iSCSI */ +#define NETLINK_AUDIT 9 /* auditing */ +#define NETLINK_FIB_LOOKUP 10 +#define NETLINK_CONNECTOR 11 +#define NETLINK_NETFILTER 12 +#define NETLINK_IP6_FW 13 +#define NETLINK_DNRTMSG 14 /* DECnet routing messages */ +#define NETLINK_KOBJECT_UEVENT 15 /* Kernel messages to userspace */ +#define NETLINK_GENERIC 16 + +#define MAX_LINKS 32 + +/** + * Netlink socket address + * @ingroup nl + */ +struct sockaddr_nl +{ + /** socket family (AF_NETLINK) */ + sa_family_t nl_family; + + /** Padding (unused) */ + unsigned short nl_pad; + + /** Unique process ID */ + uint32_t nl_pid; + + /** Multicast group subscriptions */ + uint32_t nl_groups; +}; + +/** + * Netlink message header + * @ingroup msg + */ +struct nlmsghdr +{ + /** + * Length of message including header. + */ + uint32_t nlmsg_len; + + /** + * Message type (content type) + */ + uint16_t nlmsg_type; + + /** + * Message flags + */ + uint16_t nlmsg_flags; + + /** + * Sequence number + */ + uint32_t nlmsg_seq; + + /** + * Netlink PID of the proccess sending the message. + */ + uint32_t nlmsg_pid; +}; + +/** + * @name Standard message flags + * @{ + */ + +/** + * Must be set on all request messages (typically from user space to + * kernel space). + * @ingroup msg + */ +#define NLM_F_REQUEST 1 + +/** + * Indicates the message is part of a multipart message terminated + * by NLMSG_DONE. + */ +#define NLM_F_MULTI 2 + +/** + * Request for an acknowledgment on success. + */ +#define NLM_F_ACK 4 + +/** + * Echo this request + */ +#define NLM_F_ECHO 8 + +/** @} */ + +/** + * @name Additional message flags for GET requests + * @{ + */ + +/** + * Return the complete table instead of a single entry. + * @ingroup msg + */ +#define NLM_F_ROOT 0x100 + +/** + * Return all entries matching criteria passed in message content. + */ +#define NLM_F_MATCH 0x200 + +/** + * Return an atomic snapshot of the table being referenced. This + * may require special privileges because it has the potential to + * interrupt service in the FE for a longer time. + */ +#define NLM_F_ATOMIC 0x400 + +/** + * Dump all entries + */ +#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH) + +/** @} */ + +/** + * @name Additional messsage flags for NEW requests + * @{ + */ + +/** + * Replace existing matching config object with this request. + * @ingroup msg + */ +#define NLM_F_REPLACE 0x100 + +/** + * Don't replace the config object if it already exists. + */ +#define NLM_F_EXCL 0x200 + +/** + * Create config object if it doesn't already exist. + */ +#define NLM_F_CREATE 0x400 + +/** + * Add to the end of the object list. + */ +#define NLM_F_APPEND 0x800 + +/** @} */ + +#define NLMSG_ALIGNTO 4 +#define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) ) +#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr))) + +/** + * @name Standard Message types + * @{ + */ + +/** + * No operation, message must be ignored + * @ingroup msg + */ +#define NLMSG_NOOP 0x1 + +/** + * The message signals an error and the payload contains a nlmsgerr + * structure. This can be looked at as a NACK and typically it is + * from FEC to CPC. + */ +#define NLMSG_ERROR 0x2 + +/** + * Message terminates a multipart message. + */ +#define NLMSG_DONE 0x3 + +/** + * The message signals that data got lost + */ +#define NLMSG_OVERRUN 0x4 + +/** + * Lower limit of reserved message types + */ +#define NLMSG_MIN_TYPE 0x10 + +/** @} */ + +/** + * Netlink error message + * @ingroup msg + */ +struct nlmsgerr +{ + /** Error code (errno number) */ + int error; + + /** Original netlink message causing the error */ + struct nlmsghdr msg; +}; + +#define NETLINK_ADD_MEMBERSHIP 1 +#define NETLINK_DROP_MEMBERSHIP 2 +#define NETLINK_PKTINFO 3 + +struct nl_pktinfo +{ + __u32 group; +}; + +/** + * Netlink Attribute + * @ingroup attr + */ +struct nlattr +{ + /** Attribute length */ + __u16 nla_len; + + /** Attribute type */ + __u16 nla_type; +}; + +#define NLA_ALIGNTO 4 +#define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1)) +#define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr))) + +#endif /* __LINUX_NETLINK_H */ diff --git a/include/netlink/netlink.h b/include/netlink/netlink.h new file mode 100644 index 0000000..6bdbb3d --- /dev/null +++ b/include/netlink/netlink.h @@ -0,0 +1,79 @@ +/* + * netlink/netlink.h Netlink Interface + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_H_ +#define NETLINK_H_ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +extern int nl_debug; + +struct nl_handle; + +/* General */ +extern struct nl_handle * nl_handle_alloc(void); +extern struct nl_handle * nl_handle_alloc_nondefault(enum nl_cb_kind); +extern void nl_handle_destroy(struct nl_handle *); +extern void nl_join_groups(struct nl_handle *, int); +extern void nl_disable_sequence_check(struct nl_handle *); + +extern int nl_join_group(struct nl_handle *, int); +extern int nl_set_passcred(struct nl_handle *, int); + +/* Access Functions */ +extern pid_t nl_handle_get_pid(struct nl_handle *); +extern void nl_handle_set_pid(struct nl_handle *, pid_t); +extern pid_t nl_handle_get_peer_pid(struct nl_handle *); +extern void nl_handle_set_peer_pid(struct nl_handle *, pid_t); +extern int nl_handle_get_fd(struct nl_handle *); +extern struct sockaddr_nl * nl_handle_get_local_addr(struct nl_handle *); +extern struct sockaddr_nl * nl_handle_get_peer_addr(struct nl_handle *); +extern struct nl_cb * nl_handle_get_cb(struct nl_handle *); + +/* Connection Management */ +extern int nl_connect(struct nl_handle *, int); +extern void nl_close(struct nl_handle *); + +/* Send */ +extern int nl_sendto(struct nl_handle *, void *, size_t); +extern int nl_sendmsg(struct nl_handle *, struct nl_msg *, + struct msghdr *); +extern int nl_send(struct nl_handle *, struct nl_msg *); +extern int nl_send_auto_complete(struct nl_handle *, + struct nl_msg *); +extern int nl_send_simple(struct nl_handle *, int, int, + void *, size_t); + +/* Receive */ +extern int nl_recv(struct nl_handle *, + struct sockaddr_nl *, unsigned char **, + struct ucred **); + +extern int nl_recvmsgs(struct nl_handle *, struct nl_cb *); +extern int nl_recvmsgs_def(struct nl_handle *); + +extern int nl_wait_for_ack(struct nl_handle *); + +/* Netlink Family Translations */ +extern char * nl_nlfamily2str(int, char *, size_t); +extern int nl_str2nlfamily(const char *); + +#endif diff --git a/include/netlink/object.h b/include/netlink/object.h new file mode 100644 index 0000000..6999ff2 --- /dev/null +++ b/include/netlink/object.h @@ -0,0 +1,42 @@ +/* + * netlink/object.c Generic Cacheable Object + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_OBJECT_H_ +#define NETLINK_OBJECT_H_ + +#include +#include + +struct nl_cache; +struct nl_object; +struct nl_cache_ops; + +/* General */ +extern struct nl_object * nl_object_alloc(size_t size); +extern struct nl_object * nl_object_alloc_from_ops(struct nl_cache_ops *); +extern struct nl_object * nl_object_alloc_name(const char *); +extern void nl_object_free(struct nl_object *); +extern struct nl_object * nl_object_clone(struct nl_object *obj); +extern void nl_object_get(struct nl_object *); +extern void nl_object_put(struct nl_object *); +extern int nl_object_shared(struct nl_object *); +extern void nl_object_dump(struct nl_object *, + struct nl_dump_params *); +extern int nl_object_match(struct nl_object *, + struct nl_object *); + +/* Access Functions */ +extern int nl_object_get_refcnt(struct nl_object *); +extern struct nl_cache_ops * nl_object_get_ops(struct nl_object *); +extern struct nl_cache * nl_object_get_cache(struct nl_object *); +extern inline void * nl_object_priv(struct nl_object *); + +#endif diff --git a/include/netlink/route/addr.h b/include/netlink/route/addr.h new file mode 100644 index 0000000..91a780d --- /dev/null +++ b/include/netlink/route/addr.h @@ -0,0 +1,84 @@ +/* + * netlink/route/addr.c rtnetlink addr layer + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + * Baruch Even , + * Mediatrix Telecom, inc. + */ + +#ifndef NETADDR_ADDR_H_ +#define NETADDR_ADDR_H_ + +#include +#include +#include + +struct rtnl_addr; + +/* General */ +extern struct rtnl_addr *rtnl_addr_alloc(void); +extern void rtnl_addr_put(struct rtnl_addr *); +extern void rtnl_addr_free(struct rtnl_addr *); + +extern struct nl_cache *rtnl_addr_alloc_cache(struct nl_handle *); + +/* Address Addition */ +extern struct nl_msg * rtnl_addr_build_add_request(struct rtnl_addr *, int); +extern int rtnl_addr_add(struct nl_handle *, struct rtnl_addr *, + int); + +/* Address Deletion */ +extern struct nl_msg * rtnl_addr_build_delete_request(struct rtnl_addr *, int); +extern int rtnl_addr_delete(struct nl_handle *, + struct rtnl_addr *, int); + +/* Address Flags Translations */ +extern char * rtnl_addr_flags2str(int, char *, size_t); +extern int rtnl_addr_str2flags(const char *); + +/* Attribute Access */ +extern void rtnl_addr_set_label(struct rtnl_addr *, const char *); +extern char * rtnl_addr_get_label(struct rtnl_addr *); + +extern void rtnl_addr_set_ifindex(struct rtnl_addr *, int); +extern int rtnl_addr_get_ifindex(struct rtnl_addr *); + +extern void rtnl_addr_set_family(struct rtnl_addr *, int); +extern int rtnl_addr_get_family(struct rtnl_addr *); + +extern void rtnl_addr_set_prefixlen(struct rtnl_addr *, int); +extern int rtnl_addr_get_prefixlen(struct rtnl_addr *); + +extern void rtnl_addr_set_scope(struct rtnl_addr *, int); +extern int rtnl_addr_get_scope(struct rtnl_addr *); + +extern void rtnl_addr_set_flags(struct rtnl_addr *, unsigned int); +extern void rtnl_addr_unset_flags(struct rtnl_addr *, unsigned int); +extern unsigned int rtnl_addr_get_flags(struct rtnl_addr *); + +extern int rtnl_addr_set_local(struct rtnl_addr *, + struct nl_addr *); +extern struct nl_addr * rtnl_addr_get_local(struct rtnl_addr *); + +extern int rtnl_addr_set_peer(struct rtnl_addr *, + struct nl_addr *); +extern struct nl_addr * rtnl_addr_get_peer(struct rtnl_addr *); + +extern int rtnl_addr_set_broadcast(struct rtnl_addr *, + struct nl_addr *); +extern struct nl_addr * rtnl_addr_get_broadcast(struct rtnl_addr *); + +extern int rtnl_addr_set_anycast(struct rtnl_addr *, + struct nl_addr *); +extern struct nl_addr * rtnl_addr_get_anycast(struct rtnl_addr *); + +extern int rtnl_addr_set_multicast(struct rtnl_addr *, + struct nl_addr *); +extern struct nl_addr * rtnl_addr_get_multicast(struct rtnl_addr *); + +#endif diff --git a/include/netlink/route/class-modules.h b/include/netlink/route/class-modules.h new file mode 100644 index 0000000..b524a6c --- /dev/null +++ b/include/netlink/route/class-modules.h @@ -0,0 +1,58 @@ +/* + * netlink/route/class-modules.h Class Module API + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_CLASS_MODULES_H_ +#define NETLINK_CLASS_MODULES_H_ + +#include + +/** + * Class operations + * @ingroup class + */ +struct rtnl_class_ops +{ + /** + * Kind/Name of class + */ + char co_kind[32]; + + /** + * Dump callbacks + */ + int (*co_dump[NL_DUMP_MAX+1])(struct rtnl_class *, + struct nl_dump_params *, int); + + /** + * Must return the contents supposed to be in TCA_OPTIONS + */ + struct nl_msg *(*co_get_opts)(struct rtnl_class *); + + /** + * TCA_OPTIONS message parser + */ + int (*co_msg_parser)(struct rtnl_class *); + + /** + * Called before a class object gets destroyed + */ + void (*co_free_data)(struct rtnl_class *); + + /** + * INTERNAL (Do not use) + */ + struct rtnl_class_ops *co_next; +}; + +extern int rtnl_class_register(struct rtnl_class_ops *); +extern int rtnl_class_unregister(struct rtnl_class_ops *); + +#endif diff --git a/include/netlink/route/class.h b/include/netlink/route/class.h new file mode 100644 index 0000000..3b7c106 --- /dev/null +++ b/include/netlink/route/class.h @@ -0,0 +1,60 @@ +/* + * netlink/route/class.h Classes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_CLASS_H_ +#define NETLINK_CLASS_H_ + +#include +#include +#include + +struct rtnl_class; + +/* General */ +extern struct rtnl_class * rtnl_class_alloc(void); +extern void rtnl_class_put(struct rtnl_class *); +extern void rtnl_class_free(struct rtnl_class *); +extern struct nl_cache * rtnl_class_alloc_cache(struct nl_handle *, int); + +/* leaf qdisc access */ +extern int rtnl_class_has_leaf_qdisc(struct rtnl_class *); +extern struct rtnl_qdisc * rtnl_class_leaf_qdisc(struct rtnl_class *, + struct nl_cache *); + +/* class addition */ +extern struct nl_msg * rtnl_class_build_add_request(struct rtnl_class *, int); +extern int rtnl_class_add(struct nl_handle *, struct rtnl_class *, int); + +/* attribute modification */ +extern void rtnl_class_set_ifindex(struct rtnl_class *, int); +extern int rtnl_class_get_ifindex(struct rtnl_class *); +extern void rtnl_class_set_handle(struct rtnl_class *, uint32_t); +extern uint32_t rtnl_class_get_handle(struct rtnl_class *); +extern void rtnl_class_set_parent(struct rtnl_class *, uint32_t); +extern uint32_t rtnl_class_get_parent(struct rtnl_class *); +extern void rtnl_class_set_kind(struct rtnl_class *, const char *); +extern char * rtnl_class_get_kind(struct rtnl_class *); +extern uint64_t rtnl_class_get_stat(struct rtnl_class *, + enum rtnl_tc_stats_id); + +/* iterators */ +extern void rtnl_class_foreach_child(struct rtnl_class *, + struct nl_cache *, + void (*cb)(struct nl_object *, + void *), + void *); +extern void rtnl_class_foreach_cls(struct rtnl_class *, + struct nl_cache *, + void (*cb)(struct nl_object *, + void *), + void *); + +#endif diff --git a/include/netlink/route/classifier-modules.h b/include/netlink/route/classifier-modules.h new file mode 100644 index 0000000..1fa84c5 --- /dev/null +++ b/include/netlink/route/classifier-modules.h @@ -0,0 +1,57 @@ +/* + * netlink/route/classifier-modules.h Classifier Module API + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_CLASS_MODULES_H_ +#define NETLINK_CLASS_MODULES_H_ + +#include + +/** + * Classifier operations + * @ingroup cls + */ +struct rtnl_cls_ops +{ + /** + * Kind/Name of classifier + */ + char co_kind[32]; + + /** + * Dump callbacks + */ + int (*co_dump[NL_DUMP_MAX+1])(struct rtnl_cls *, + struct nl_dump_params *, int); + /** + * Must return the contents supposed to be in TCA_OPTIONS + */ + struct nl_msg *(*co_get_opts)(struct rtnl_cls *); + + /** + * TCA_OPTIONS message parser + */ + int (*co_msg_parser)(struct rtnl_cls *); + + /** + * Called before a class object gets destroyed + */ + void (*co_free_data)(struct rtnl_cls *); + + /** + * INTERNAL (Do not use) + */ + struct rtnl_cls_ops *co_next; +}; + +extern int rtnl_cls_register(struct rtnl_cls_ops *); +extern int rtnl_cls_unregister(struct rtnl_cls_ops *); + +#endif diff --git a/include/netlink/route/classifier.h b/include/netlink/route/classifier.h new file mode 100644 index 0000000..c213725 --- /dev/null +++ b/include/netlink/route/classifier.h @@ -0,0 +1,47 @@ +/* + * netlink/route/classifier.h Classifiers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_CLASSIFIER_H_ +#define NETLINK_CLASSIFIER_H_ + +#include +#include +#include +#include + +extern struct rtnl_cls *rtnl_cls_alloc(void); +extern void rtnl_cls_put(struct rtnl_cls *); +extern void rtnl_cls_free(struct rtnl_cls *); + +extern struct nl_cache *rtnl_cls_alloc_cache(struct nl_handle *, int, uint32_t); + +/* classifier addition */ +extern int rtnl_cls_add(struct nl_handle *, struct rtnl_cls *, + int); +extern struct nl_msg * rtnl_cls_build_add_request(struct rtnl_cls *, int); + +extern struct nl_msg *rtnl_cls_build_change_request(struct rtnl_cls *, int); +extern struct nl_msg *rtnl_cls_build_delete_request(struct rtnl_cls *, int); +extern int rtnl_cls_delete(struct nl_handle *, struct rtnl_cls *, int); + +/* attribute modification */ +extern void rtnl_cls_set_ifindex(struct rtnl_cls *, int); +extern void rtnl_cls_set_handle(struct rtnl_cls *, uint32_t); +extern void rtnl_cls_set_parent(struct rtnl_cls *, uint32_t); +extern void rtnl_cls_set_kind(struct rtnl_cls *, const char *); + +extern void rtnl_cls_set_prio(struct rtnl_cls *, int); +extern int rtnl_cls_get_prio(struct rtnl_cls *); + +extern void rtnl_cls_set_protocol(struct rtnl_cls *, int); +extern int rtnl_cls_get_protocol(struct rtnl_cls *); + +#endif diff --git a/include/netlink/route/cls/fw.h b/include/netlink/route/cls/fw.h new file mode 100644 index 0000000..eaa97b2 --- /dev/null +++ b/include/netlink/route/cls/fw.h @@ -0,0 +1,21 @@ +/* + * netlink/route/cls/fw.h fw classifier + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + * Copyright (c) 2006 Petr Gotthard + * Copyright (c) 2006 Siemens AG Oesterreich + */ + +#ifndef NETLINK_FW_H_ +#define NETLINK_FW_H_ + +#include + +extern int rtnl_fw_set_classid(struct rtnl_cls *, uint32_t); + +#endif diff --git a/include/netlink/route/cls/police.h b/include/netlink/route/cls/police.h new file mode 100644 index 0000000..4227c36 --- /dev/null +++ b/include/netlink/route/cls/police.h @@ -0,0 +1,21 @@ +/* + * netlink/route/cls/police.h Policer + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_CLS_POLICE_H_ +#define NETLINK_CLS_POLICE_H_ + +#include +#include + +extern char * nl_police2str(int, char *, size_t); +extern int nl_str2police(const char *); + +#endif diff --git a/include/netlink/route/cls/u32.h b/include/netlink/route/cls/u32.h new file mode 100644 index 0000000..b258d62 --- /dev/null +++ b/include/netlink/route/cls/u32.h @@ -0,0 +1,35 @@ +/* + * netlink/route/cls/u32.h u32 classifier + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_U32_H_ +#define NETLINK_U32_H_ + +#include +#include + +extern void rtnl_u32_set_handle(struct rtnl_cls *, int, int, int); +extern int rtnl_u32_set_classid(struct rtnl_cls *, uint32_t); + +extern int rtnl_u32_set_flags(struct rtnl_cls *, int); +extern int rtnl_u32_add_key(struct rtnl_cls *, uint32_t, uint32_t, + int, int); +extern int rtnl_u32_add_key_uint8(struct rtnl_cls *, uint8_t, uint8_t, + int, int); +extern int rtnl_u32_add_key_uint16(struct rtnl_cls *, uint16_t, uint16_t, + int, int); +extern int rtnl_u32_add_key_uint32(struct rtnl_cls *, uint32_t, uint32_t, + int, int); +extern int rtnl_u32_add_key_in_addr(struct rtnl_cls *, struct in_addr *, + uint8_t, int, int); +extern int rtnl_u32_add_key_in6_addr(struct rtnl_cls *, struct in6_addr *, + uint8_t, int, int); + +#endif diff --git a/include/netlink/route/link.h b/include/netlink/route/link.h new file mode 100644 index 0000000..28a0085 --- /dev/null +++ b/include/netlink/route/link.h @@ -0,0 +1,143 @@ +/* + * netlink/route/link.h Links (Interfaces) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_LINK_H_ +#define NETLINK_LINK_H_ + +#include +#include +#include + +struct rtnl_link; + +enum rtnl_link_st { + RTNL_LINK_RX_PACKETS, + RTNL_LINK_TX_PACKETS, + RTNL_LINK_RX_BYTES, + RTNL_LINK_TX_BYTES, + RTNL_LINK_RX_ERRORS, + RTNL_LINK_TX_ERRORS, + RTNL_LINK_RX_DROPPED, + RTNL_LINK_TX_DROPPED, + RTNL_LINK_RX_COMPRESSED, + RTNL_LINK_TX_COMPRESSED, + RTNL_LINK_RX_FIFO_ERR, + RTNL_LINK_TX_FIFO_ERR, + RTNL_LINK_RX_LEN_ERR, + RTNL_LINK_RX_OVER_ERR, + RTNL_LINK_RX_CRC_ERR, + RTNL_LINK_RX_FRAME_ERR, + RTNL_LINK_RX_MISSED_ERR, + RTNL_LINK_TX_ABORT_ERR, + RTNL_LINK_TX_CARRIER_ERR, + RTNL_LINK_TX_HBEAT_ERR, + RTNL_LINK_TX_WIN_ERR, + RTNL_LINK_TX_COLLISIONS, + RTNL_LINK_MULTICAST, + __RTNL_LINK_STATS_MAX, +}; + +#define RTNL_LINK_STATS_MAX (__RTNL_LINK_STATS_MAX - 1) + +/** + * Special interface index stating the link was not found. + * @ingroup link + */ +#define RTNL_LINK_NOT_FOUND -1 + +/* link object allocation/freeage */ +extern struct rtnl_link * rtnl_link_alloc(void); +extern void rtnl_link_put(struct rtnl_link *); +extern void rtnl_link_free(struct rtnl_link *); + +/* link cache management */ +extern struct nl_cache * rtnl_link_alloc_cache(struct nl_handle *); +extern struct rtnl_link * rtnl_link_get(struct nl_cache *, int); +extern struct rtnl_link * rtnl_link_get_by_name(struct nl_cache *, + const char *); + + +/* Link Modifications */ +extern struct nl_msg * rtnl_link_build_change_request(struct rtnl_link *, + struct rtnl_link *, + int); +extern int rtnl_link_change(struct nl_handle *, + struct rtnl_link *, + struct rtnl_link *, int); + +/* Name <-> Index Translations */ +extern char * rtnl_link_i2name(struct nl_cache *, int, + char *, size_t); +extern int rtnl_link_name2i(struct nl_cache *, + const char *); + +/* Name <-> Statistic Translations */ +extern char * rtnl_link_stat2str(int, char *, size_t); +extern int rtnl_link_str2stat(const char *); + +/* Link Flags Translations */ +extern char * rtnl_link_flags2str(int, char *, size_t); +extern int rtnl_link_str2flags(const char *); + +/* Access Functions */ +extern void rtnl_link_set_qdisc(struct rtnl_link *, + const char *); +extern char * rtnl_link_get_qdisc(struct rtnl_link *); + +extern void rtnl_link_set_name(struct rtnl_link *, + const char *); +extern char * rtnl_link_get_name(struct rtnl_link *); + +extern void rtnl_link_set_flags(struct rtnl_link *, + unsigned int); +extern void rtnl_link_unset_flags(struct rtnl_link *, + unsigned int); +extern unsigned int rtnl_link_get_flags(struct rtnl_link *); + +extern void rtnl_link_set_mtu(struct rtnl_link *, + unsigned int); +extern unsigned int rtnl_link_get_mtu(struct rtnl_link *); + +extern void rtnl_link_set_txqlen(struct rtnl_link *, + unsigned int); +extern unsigned int rtnl_link_get_txqlen(struct rtnl_link *); + +extern void rtnl_link_set_weight(struct rtnl_link *, + unsigned int); +extern unsigned int rtnl_link_get_weight(struct rtnl_link *); + +extern void rtnl_link_set_ifindex(struct rtnl_link *, int); +extern int rtnl_link_get_ifindex(struct rtnl_link *); + +extern void rtnl_link_set_family(struct rtnl_link *, int); +extern int rtnl_link_get_family(struct rtnl_link *); + +extern void rtnl_link_set_arptype(struct rtnl_link *, + unsigned int); +extern unsigned int rtnl_link_get_arptype(struct rtnl_link *); + +extern void rtnl_link_set_addr(struct rtnl_link *, + struct nl_addr *); +extern struct nl_addr * rtnl_link_get_addr(struct rtnl_link *); + +extern void rtnl_link_set_broadcast(struct rtnl_link *, + struct nl_addr *); +extern struct nl_addr * rtnl_link_get_broadcast(struct rtnl_link *); + +extern void rtnl_link_set_link(struct rtnl_link *, int); +extern int rtnl_link_get_link(struct rtnl_link *); + +extern void rtnl_link_set_master(struct rtnl_link *, int); +extern int rtnl_link_get_master(struct rtnl_link *); + +extern uint64_t rtnl_link_get_stat(struct rtnl_link *, int); + +#endif diff --git a/include/netlink/route/neighbour.h b/include/netlink/route/neighbour.h new file mode 100644 index 0000000..f2cda96 --- /dev/null +++ b/include/netlink/route/neighbour.h @@ -0,0 +1,84 @@ +/* + * netlink/route/neighbour.h Neighbours + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_NEIGHBOUR_H_ +#define NETLINK_NEIGHBOUR_H_ + +#include +#include +#include + +struct rtnl_neigh; + +/* neighbour object allocation/freeage */ +extern struct rtnl_neigh * rtnl_neigh_alloc(void); +extern void rtnl_neigh_put(struct rtnl_neigh *); +extern void rtnl_neigh_free(struct rtnl_neigh *); + +/* neighbour cache management */ +extern struct nl_cache * rtnl_neigh_alloc_cache(struct nl_handle *); +extern struct rtnl_neigh * rtnl_neigh_get(struct nl_cache *, int, + struct nl_addr *); + +/* Neigbour state translations */ +extern char * rtnl_neigh_state2str(int, char *, size_t); +extern int rtnl_neigh_str2state(const char *); + +/* Neighbour flags translations */ +extern char * rtnl_neigh_flags2str(int, char *, size_t); +extern int rtnl_neigh_str2flag(const char *); + +/* Neighbour Addition */ +extern int rtnl_neigh_add(struct nl_handle *, + struct rtnl_neigh *, int); +extern struct nl_msg * rtnl_neigh_build_add_request(struct rtnl_neigh *, int); + +/* Neighbour Modification */ +extern int rtnl_neigh_change(struct nl_handle *, + struct rtnl_neigh *, int); +extern struct nl_msg * rtnl_neigh_build_change_request(struct rtnl_neigh *, int); + +/* Neighbour Deletion */ +extern int rtnl_neigh_delete(struct nl_handle *, + struct rtnl_neigh *, int); +extern struct nl_msg * rtnl_neigh_build_delete_request(struct rtnl_neigh *, int); + +/* Access functions */ +extern void rtnl_neigh_set_state(struct rtnl_neigh *, int); +extern int rtnl_neigh_get_state(struct rtnl_neigh *); +extern void rtnl_neigh_unset_state(struct rtnl_neigh *, + int); + +extern void rtnl_neigh_set_flags(struct rtnl_neigh *, + unsigned int); +extern void rtnl_neigh_unset_flags(struct rtnl_neigh *, + unsigned int); +extern unsigned int rtnl_neigh_get_flags(struct rtnl_neigh *); + +extern void rtnl_neigh_set_ifindex(struct rtnl_neigh *, + int); +extern int rtnl_neigh_get_ifindex(struct rtnl_neigh *); + +extern void rtnl_neigh_set_lladdr(struct rtnl_neigh *, + struct nl_addr *); +extern struct nl_addr * rtnl_neigh_get_lladdr(struct rtnl_neigh *); + +extern int rtnl_neigh_set_dst(struct rtnl_neigh *, + struct nl_addr *); +extern struct nl_addr * rtnl_neigh_get_dst(struct rtnl_neigh *); + +extern void rtnl_neigh_set_type(struct rtnl_neigh *, int); +extern int rtnl_neigh_get_type(struct rtnl_neigh *); + +extern void rtnl_neigh_set_family(struct rtnl_neigh *, int); +extern int rtnl_neigh_get_family(struct rtnl_neigh *); + +#endif diff --git a/include/netlink/route/neightbl.h b/include/netlink/route/neightbl.h new file mode 100644 index 0000000..954cabc --- /dev/null +++ b/include/netlink/route/neightbl.h @@ -0,0 +1,56 @@ +/* + * netlink/route/neightbl.h Neighbour Tables + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_NEIGHTBL_H_ +#define NETLINK_NEIGHTBL_H_ + +#include +#include +#include + +struct rtnl_neightbl; + +extern struct rtnl_neightbl *rtnl_neightbl_alloc(void); +extern void rtnl_neightbl_put(struct rtnl_neightbl *); +extern void rtnl_neightbl_free(struct rtnl_neightbl *); +extern struct nl_cache *rtnl_neightbl_alloc_cache(struct nl_handle *); +extern struct rtnl_neightbl *rtnl_neightbl_get(struct nl_cache *, + const char *, int); +extern void rtnl_neightbl_dump(struct rtnl_neightbl *, FILE *, + struct nl_dump_params *); + +extern struct nl_msg *rtnl_neightbl_build_change_request(struct rtnl_neightbl *, + struct rtnl_neightbl *); +extern int rtnl_neightbl_change(struct nl_handle *, struct rtnl_neightbl *, + struct rtnl_neightbl *); + +extern void rtnl_neightbl_set_family(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_gc_tresh1(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_gc_tresh2(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_gc_tresh3(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_name(struct rtnl_neightbl *, const char *); +extern void rtnl_neightbl_set_dev(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_queue_len(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_proxy_queue_len(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_app_probes(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_ucast_probes(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_mcast_probes(struct rtnl_neightbl *, int); +extern void rtnl_neightbl_set_base_reachable_time(struct rtnl_neightbl *, + uint64_t); +extern void rtnl_neightbl_set_retrans_time(struct rtnl_neightbl *, uint64_t); +extern void rtnl_neightbl_set_gc_stale_time(struct rtnl_neightbl *, uint64_t); +extern void rtnl_neightbl_set_delay_probe_time(struct rtnl_neightbl *, + uint64_t); +extern void rtnl_neightbl_set_anycast_delay(struct rtnl_neightbl *, uint64_t); +extern void rtnl_neightbl_set_proxy_delay(struct rtnl_neightbl *, uint64_t); +extern void rtnl_neightbl_set_locktime(struct rtnl_neightbl *, uint64_t); + +#endif diff --git a/include/netlink/route/nexthop.h b/include/netlink/route/nexthop.h new file mode 100644 index 0000000..a9e70f9 --- /dev/null +++ b/include/netlink/route/nexthop.h @@ -0,0 +1,32 @@ +/* + * netlink/route/nexthop.h Routing Nexthop + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_ROUTE_NEXTHOP_H_ +#define NETLINK_ROUTE_NEXTHOP_H_ + +#include +#include + +struct rtnl_nexthop; + +extern struct rtnl_nexthop * rtnl_route_nh_alloc(void); +extern void rtnl_route_nh_free(struct rtnl_nexthop *); +extern void rtnl_route_nh_set_weight(struct rtnl_nexthop *, int); +extern void rtnl_route_nh_set_ifindex(struct rtnl_nexthop *, int); +extern void rtnl_route_nh_set_gateway(struct rtnl_nexthop *, + struct nl_addr *); +extern void rtnl_route_nh_set_flags(struct rtnl_nexthop *, + unsigned int); +extern void rtnl_route_nh_unset_flags(struct rtnl_nexthop *, + unsigned int); +extern unsigned int rtnl_route_nh_get_flags(struct rtnl_nexthop *); + +#endif diff --git a/include/netlink/route/qdisc-modules.h b/include/netlink/route/qdisc-modules.h new file mode 100644 index 0000000..235f06b --- /dev/null +++ b/include/netlink/route/qdisc-modules.h @@ -0,0 +1,58 @@ +/* + * netlink/route/qdisc-modules.h Qdisc Module API + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_QDISC_MODULES_H_ +#define NETLINK_QDISC_MODULES_H_ + +#include + +/** + * Qdisc Operations + * @ingroup qdisc + */ +struct rtnl_qdisc_ops +{ + /** + * Kind/Name of Qdisc + */ + char qo_kind[32]; + + /** + * Dump callbacks + */ + int (*qo_dump[NL_DUMP_MAX+1])(struct rtnl_qdisc *, + struct nl_dump_params *, int); + + /** + * Must return the contents supposed to be in TCA_OPTIONS + */ + struct nl_msg *(*qo_get_opts)(struct rtnl_qdisc *); + + /** + * TCA_OPTIONS message parser + */ + int (*qo_msg_parser)(struct rtnl_qdisc *); + + /** + * Called before a Qdisc object gets destroyed + */ + void (*qo_free_data)(struct rtnl_qdisc *); + + /** + * INTERNAL (Do not use) + */ + struct rtnl_qdisc_ops *qo_next; +}; + +extern int rtnl_qdisc_register(struct rtnl_qdisc_ops *); +extern int rtnl_qdisc_unregister(struct rtnl_qdisc_ops *); + +#endif diff --git a/include/netlink/route/qdisc.h b/include/netlink/route/qdisc.h new file mode 100644 index 0000000..81336f3 --- /dev/null +++ b/include/netlink/route/qdisc.h @@ -0,0 +1,78 @@ +/* + * netlink/route/qdisc.h Queueing Disciplines + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_QDISC_H_ +#define NETLINK_QDISC_H_ + +#include +#include +#include + +struct rtnl_qdisc; + +/* General */ +extern struct rtnl_qdisc * rtnl_qdisc_alloc(void); +extern void rtnl_qdisc_put(struct rtnl_qdisc *); +extern void rtnl_qdisc_free(struct rtnl_qdisc *); + +/* Cache Management */ +extern struct nl_cache * rtnl_qdisc_alloc_cache(struct nl_handle *); +extern struct rtnl_qdisc * rtnl_qdisc_get(struct nl_cache *, + int, uint32_t); +extern struct rtnl_qdisc * rtnl_qdisc_get_by_parent(struct nl_cache *, + int, uint32_t); + +/* qdisc addition */ +extern struct nl_msg * rtnl_qdisc_build_add_request(struct rtnl_qdisc *, int); +extern int rtnl_qdisc_add(struct nl_handle *, struct rtnl_qdisc *, + int); + +/* qdisc modification */ +extern struct nl_msg * rtnl_qdisc_build_change_request(struct rtnl_qdisc *, + struct rtnl_qdisc *); +extern int rtnl_qdisc_change(struct nl_handle *, + struct rtnl_qdisc *, + struct rtnl_qdisc *); + +/* qdisc deletion */ +extern struct nl_msg * rtnl_qdisc_build_delete_request(struct rtnl_qdisc *); +extern int rtnl_qdisc_delete(struct nl_handle *, + struct rtnl_qdisc *); + +/* attribute modifications */ +extern void rtnl_qdisc_set_ifindex(struct rtnl_qdisc *, int); +extern int rtnl_qdisc_get_ifindex(struct rtnl_qdisc *); +extern void rtnl_qdisc_set_handle(struct rtnl_qdisc *, uint32_t); +extern uint32_t rtnl_qdisc_get_handle(struct rtnl_qdisc *); +extern void rtnl_qdisc_set_parent(struct rtnl_qdisc *, uint32_t); +extern uint32_t rtnl_qdisc_get_parent(struct rtnl_qdisc *); +extern void rtnl_qdisc_set_kind(struct rtnl_qdisc *, const char *); +extern char * rtnl_qdisc_get_kind(struct rtnl_qdisc *); +extern uint64_t rtnl_qdisc_get_stat(struct rtnl_qdisc *, + enum rtnl_tc_stats_id); + +/* iterators */ +extern void rtnl_qdisc_foreach_child(struct rtnl_qdisc *, + struct nl_cache *, + void (*cb)(struct nl_object *, + void *), + void *); + +extern void rtnl_qdisc_foreach_cls(struct rtnl_qdisc *, + struct nl_cache *, + void (*cb)(struct nl_object *, + void *), + void *); + +/* qdisc specific options */ +extern struct nl_msg * rtnl_qdisc_get_opts(struct rtnl_qdisc *); + +#endif diff --git a/include/netlink/route/route.h b/include/netlink/route/route.h new file mode 100644 index 0000000..c8e0085 --- /dev/null +++ b/include/netlink/route/route.h @@ -0,0 +1,95 @@ +/* + * netlink/route/route.h Routes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_ROUTE_H_ +#define NETLINK_ROUTE_H_ + +#include +#include +#include +#include +#include + +struct rtnl_route; + +/* General */ +extern struct rtnl_route * rtnl_route_alloc(void); +extern void rtnl_route_free(struct rtnl_route *); +extern struct nl_cache * rtnl_route_alloc_cache(struct nl_handle *); + +extern void rtnl_route_get(struct rtnl_route *); +extern void rtnl_route_put(struct rtnl_route *); + +/* Access Functions */ +extern void rtnl_route_set_table(struct rtnl_route *, int); +extern int rtnl_route_get_table(struct rtnl_route *); +extern void rtnl_route_set_scope(struct rtnl_route *, int); +extern int rtnl_route_get_scope(struct rtnl_route *); +extern void rtnl_route_set_tos(struct rtnl_route *, int); +extern int rtnl_route_get_tos(struct rtnl_route *); +extern void rtnl_route_set_realms(struct rtnl_route *, realm_t); +extern realm_t rtnl_route_get_realms(struct rtnl_route *); +extern void rtnl_route_set_protocol(struct rtnl_route *, int); +extern int rtnl_route_get_protocol(struct rtnl_route *); +extern void rtnl_route_set_prio(struct rtnl_route *, int); +extern int rtnl_route_get_prio(struct rtnl_route *); +extern void rtnl_route_set_family(struct rtnl_route *, int); +extern int rtnl_route_get_family(struct rtnl_route *); +extern void rtnl_route_set_type(struct rtnl_route *, int); +extern int rtnl_route_get_type(struct rtnl_route *); +extern void rtnl_route_set_flags(struct rtnl_route *, + unsigned int); +extern void rtnl_route_unset_flags(struct rtnl_route *, + unsigned int); +extern unsigned int rtnl_route_get_flags(struct rtnl_route *); +extern int rtnl_route_set_metric(struct rtnl_route *, int, + unsigned int); +extern int rtnl_route_unset_metric(struct rtnl_route *, int); +extern unsigned int rtnl_route_get_metric(struct rtnl_route *, int); +extern int rtnl_route_set_dst(struct rtnl_route *, + struct nl_addr *); +extern struct nl_addr * rtnl_route_get_dst(struct rtnl_route *); +extern int rtnl_route_set_src(struct rtnl_route *, + struct nl_addr *); +extern struct nl_addr * rtnl_route_get_src(struct rtnl_route *); +extern int rtnl_route_set_gateway(struct rtnl_route *, + struct nl_addr *); +extern struct nl_addr * rtnl_route_get_gateway(struct rtnl_route *); +extern int rtnl_route_set_pref_src(struct rtnl_route *, + struct nl_addr *); +extern struct nl_addr * rtnl_route_get_pref_src(struct rtnl_route *); +extern void rtnl_route_set_oif(struct rtnl_route *, int); +extern int rtnl_route_get_oif(struct rtnl_route *); +extern void rtnl_route_set_iif(struct rtnl_route *, const char *); +extern char * rtnl_route_get_iif(struct rtnl_route *); +extern void rtnl_route_set_dst_len(struct rtnl_route *, int); +extern int rtnl_route_get_dst_len(struct rtnl_route *); +extern void rtnl_route_set_src_len(struct rtnl_route *, int); +extern int rtnl_route_get_src_len(struct rtnl_route *); + +extern void rtnl_route_add_nexthop(struct rtnl_route *, + struct rtnl_nexthop *); +extern void rtnl_route_remove_nexthop(struct rtnl_nexthop *); +extern struct nl_list_head * rtnl_route_get_nexthops(struct rtnl_route *); + +extern char * rtnl_route_table2str(int, char *, size_t); +extern int rtnl_route_str2table(const char *); + +extern char * rtnl_route_proto2str(int, char *, size_t); +extern int rtnl_route_str2proto(const char *); + +extern char * rtnl_route_metric2str(int, char *, size_t); +extern int rtnl_route_str2metric(const char *); + +extern char * rtnl_route_nh_flags2str(int, char *, size_t); +extern int rtnl_route_nh_str2flags(const char *); + +#endif diff --git a/include/netlink/route/rtnl.h b/include/netlink/route/rtnl.h new file mode 100644 index 0000000..427f5bb --- /dev/null +++ b/include/netlink/route/rtnl.h @@ -0,0 +1,63 @@ +/* + * netlink/route/rtnl.h Routing Netlink + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_RTNL_H_ +#define NETLINK_RTNL_H_ + +#include + +/** + * @name Realms + * @{ + */ + +typedef uint32_t realm_t; + +/** + * Mask specying the size of each realm part + * @ingroup rtnl + */ +#define RTNL_REALM_MASK (0xFFFF) + +/** + * Extract FROM realm from a realms field + */ +#define RTNL_REALM_FROM(realm) ((realm) >> 16) + +/** + * Extract TO realm from a realms field + */ +#define RTNL_REALM_TO(realm) ((realm) & RTNL_REALM_MASK) + +/** + * Build a realms field + */ +#define RTNL_MAKE_REALM(from, to) \ + ((RTNL_REALM_TO(from) << 16) & RTNL_REALM_TO(to)) + +/** @} */ + + +/* General */ +extern int nl_rtgen_request(struct nl_handle *, int, int, int); + +/* Routing Type Translations */ +extern char * nl_rtntype2str(int, char *, size_t); +extern int nl_str2rtntype(const char *); + +/* Scope Translations */ +extern char * rtnl_scope2str(int, char *, size_t); +extern int rtnl_str2scope(const char *); + +/* Realms Translations */ +extern char * rtnl_realms2str(uint32_t, char *, size_t); + +#endif diff --git a/include/netlink/route/rule.h b/include/netlink/route/rule.h new file mode 100644 index 0000000..d33fabe --- /dev/null +++ b/include/netlink/route/rule.h @@ -0,0 +1,70 @@ +/* + * netlink/route/rule.h Rules + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_RULE_H_ +#define NETLINK_RULE_H_ + +#include +#include +#include +#include + +struct rtnl_rule; + +/* General */ +extern struct rtnl_rule * rtnl_rule_alloc(void); +extern void rtnl_rule_put(struct rtnl_rule *); +extern void rtnl_rule_free(struct rtnl_rule *); + +extern struct nl_cache * rtnl_rule_alloc_cache(struct nl_handle *); +extern struct nl_cache * rtnl_rule_alloc_cache_by_family(struct nl_handle *, + int); +extern void rtnl_rule_dump(struct rtnl_rule *, FILE *, struct nl_dump_params *); + +extern struct nl_msg * rtnl_rule_build_add_request(struct rtnl_rule *, int); +extern int rtnl_rule_add(struct nl_handle *, struct rtnl_rule *, int); +extern struct nl_msg * rtnl_rule_build_delete_request(struct rtnl_rule *, int); +extern int rtnl_rule_delete(struct nl_handle *, struct rtnl_rule *, int); + + +/* attribute modification */ +extern void rtnl_rule_set_family(struct rtnl_rule *, int); +extern int rtnl_rule_get_family(struct rtnl_rule *); +extern void rtnl_rule_set_prio(struct rtnl_rule *, int); +extern int rtnl_rule_get_prio(struct rtnl_rule *); +extern void rtnl_rule_set_fwmark(struct rtnl_rule *, uint64_t); +extern uint64_t rtnl_rule_get_fwmark(struct rtnl_rule *); +extern void rtnl_rule_set_table(struct rtnl_rule *, int); +extern int rtnl_rule_get_table(struct rtnl_rule *); +extern void rtnl_rule_set_dsfield(struct rtnl_rule *, int); +extern int rtnl_rule_get_dsfield(struct rtnl_rule *); +extern int rtnl_rule_set_src(struct rtnl_rule *, struct nl_addr *); +extern struct nl_addr * rtnl_rule_get_src(struct rtnl_rule *); +extern int rtnl_rule_set_dst(struct rtnl_rule *, struct nl_addr *); +extern struct nl_addr * rtnl_rule_get_dst(struct rtnl_rule *); +extern void rtnl_rule_set_src_len(struct rtnl_rule *, int); +extern int rtnl_rule_get_src_len(struct rtnl_rule *); +extern void rtnl_rule_set_dst_len(struct rtnl_rule *, int); +extern int rtnl_rule_get_dst_len(struct rtnl_rule *); + +extern void rtnl_rule_set_action(struct rtnl_rule *, int); +extern int rtnl_rule_get_action(struct rtnl_rule *); + +extern int rtnl_rule_set_iif(struct rtnl_rule *, const char *); +extern char * rtnl_rule_get_iif(struct rtnl_rule *); + +extern void rtnl_rule_set_classid(struct rtnl_rule *, uint32_t); +extern uint32_t rtnl_rule_get_classid(struct rtnl_rule *); + +extern void rtnl_rule_set_realms(struct rtnl_rule *, realm_t); +extern realm_t rtnl_rule_get_realms(struct rtnl_rule *); + +#endif diff --git a/include/netlink/route/sch/cbq.h b/include/netlink/route/sch/cbq.h new file mode 100644 index 0000000..764b0f3 --- /dev/null +++ b/include/netlink/route/sch/cbq.h @@ -0,0 +1,22 @@ +/* + * netlink/route/sch/cbq.h Class Based Queueing + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_CBQ_H_ +#define NETLINK_CBQ_H_ + +#include +#include +#include + +extern char * nl_ovl_strategy2str(int, char *, size_t); +extern int nl_str2ovl_strategy(const char *); + +#endif diff --git a/include/netlink/route/sch/dsmark.h b/include/netlink/route/sch/dsmark.h new file mode 100644 index 0000000..2fb130a --- /dev/null +++ b/include/netlink/route/sch/dsmark.h @@ -0,0 +1,33 @@ +/* + * netlink/route/sch/dsmark.h DSMARK + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_DSMARK_H_ +#define NETLINK_DSMARK_H_ + +#include + +extern int rtnl_class_dsmark_set_bmask(struct rtnl_class *, uint8_t); +extern int rtnl_class_dsmark_get_bmask(struct rtnl_class *); + +extern int rtnl_class_dsmark_set_value(struct rtnl_class *, uint8_t); +extern int rtnl_class_dsmark_get_value(struct rtnl_class *); + +extern int rtnl_qdisc_dsmark_set_indices(struct rtnl_qdisc *, uint16_t); +extern int rtnl_qdisc_dsmark_get_indices(struct rtnl_qdisc *); + +extern int rtnl_qdisc_dsmark_set_default_index(struct rtnl_qdisc *, + uint16_t); +extern int rtnl_qdisc_dsmark_get_default_index(struct rtnl_qdisc *); + +extern int rtnl_qdisc_dsmark_set_set_tc_index(struct rtnl_qdisc *, int); +extern int rtnl_qdisc_dsmark_get_set_tc_index(struct rtnl_qdisc *); + +#endif diff --git a/include/netlink/route/sch/fifo.h b/include/netlink/route/sch/fifo.h new file mode 100644 index 0000000..b5ba8eb --- /dev/null +++ b/include/netlink/route/sch/fifo.h @@ -0,0 +1,20 @@ +/* + * netlink/route/sch/fifo.c FIFO Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_FIFO_H_ +#define NETLINK_FIFO_H_ + +#include + +extern int rtnl_qdisc_fifo_set_limit(struct rtnl_qdisc *, int); +extern int rtnl_qdisc_fifo_get_limit(struct rtnl_qdisc *); + +#endif diff --git a/include/netlink/route/sch/htb.h b/include/netlink/route/sch/htb.h new file mode 100644 index 0000000..c681049 --- /dev/null +++ b/include/netlink/route/sch/htb.h @@ -0,0 +1,28 @@ +/* + * netlink/route/sch/htb.h HTB Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + * Copyright (c) 2005 Petr Gotthard + * Copyright (c) 2005 Siemens AG Oesterreich + */ + +#ifndef NETLINK_HTB_H_ +#define NETLINK_HTB_H_ + +#include +#include + +extern void rtnl_htb_set_rate2quantum(struct rtnl_qdisc *, uint32_t); +extern void rtnl_htb_set_defcls(struct rtnl_qdisc *, uint32_t); + +extern void rtnl_htb_set_prio(struct rtnl_class *, uint32_t); +extern void rtnl_htb_set_mtu(struct rtnl_class *, uint32_t); +extern void rtnl_htb_set_rate(struct rtnl_class *, uint32_t); +extern void rtnl_htb_set_ceil(struct rtnl_class *, uint32_t); + +#endif diff --git a/include/netlink/route/sch/netem.h b/include/netlink/route/sch/netem.h new file mode 100644 index 0000000..dd3597f --- /dev/null +++ b/include/netlink/route/sch/netem.h @@ -0,0 +1,54 @@ +/* + * netlink/route/sch/netem.h Network Emulator Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_NETEM_H_ +#define NETLINK_NETEM_H_ + +#include + +extern int rtnl_netem_set_limit(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_limit(struct rtnl_qdisc *); + +/* Packet Re-ordering */ +extern int rtnl_netem_set_gap(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_gap(struct rtnl_qdisc *); + +extern int rtnl_netem_set_reorder_probability(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_reorder_probability(struct rtnl_qdisc *); + +extern int rtnl_netem_set_reorder_correlation(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_reorder_correlation(struct rtnl_qdisc *); + +/* Packet Loss */ +extern int rtnl_netem_set_loss(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_loss(struct rtnl_qdisc *); + +extern int rtnl_netem_set_loss_correlation(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_loss_correlation(struct rtnl_qdisc *); + +/* Packet Duplication */ +extern int rtnl_netem_set_duplicate(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_duplicate(struct rtnl_qdisc *); + +extern int rtnl_netem_set_duplicate_correction(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_duplicate_correlation(struct rtnl_qdisc *); + +/* Packet Delay */ +extern int rtnl_netem_set_delay(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_delay(struct rtnl_qdisc *); + +extern int rtnl_netem_set_jitter(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_jitter(struct rtnl_qdisc *); + +extern int rtnl_netem_set_delay_correlation(struct rtnl_qdisc *, int); +extern int rtnl_netem_get_delay_correlation(struct rtnl_qdisc *); + +#endif diff --git a/include/netlink/route/sch/prio.h b/include/netlink/route/sch/prio.h new file mode 100644 index 0000000..436922e --- /dev/null +++ b/include/netlink/route/sch/prio.h @@ -0,0 +1,45 @@ +/* + * netlink/route/sch/prio.c PRIO Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_PRIO_H_ +#define NETLINK_PRIO_H_ + +#include + +/** + * @name Default Values + * @{ + */ + +/** + * Default number of bands. + * @ingroup prio + */ +#define QDISC_PRIO_DEFAULT_BANDS 3 + +/** + * Default priority mapping. + * @ingroup prio + */ +#define QDISC_PRIO_DEFAULT_PRIOMAP \ + { 1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 } + +/** @} */ + +extern int rtnl_qdisc_prio_set_bands(struct rtnl_qdisc *, int); +extern int rtnl_qdisc_prio_get_bands(struct rtnl_qdisc *); +extern int rtnl_qdisc_prio_set_priomap(struct rtnl_qdisc *, uint8_t[], int); +extern uint8_t *rtnl_qdisc_prio_get_priomap(struct rtnl_qdisc *); + +extern char * rtnl_prio2str(int, char *, size_t); +extern int rtnl_str2prio(const char *); + +#endif diff --git a/include/netlink/route/sch/red.h b/include/netlink/route/sch/red.h new file mode 100644 index 0000000..a4e8642 --- /dev/null +++ b/include/netlink/route/sch/red.h @@ -0,0 +1,17 @@ +/* + * netlink/route/sch/red.h RED Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_RED_H_ +#define NETLINK_RED_H_ + +#include + +#endif diff --git a/include/netlink/route/sch/sfq.h b/include/netlink/route/sch/sfq.h new file mode 100644 index 0000000..2482b08 --- /dev/null +++ b/include/netlink/route/sch/sfq.h @@ -0,0 +1,28 @@ +/* + * netlink/route/sch/sfq.c SFQ Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_SFQ_H_ +#define NETLINK_SFQ_H_ + +#include + +extern int rtnl_sfq_set_quantum(struct rtnl_qdisc *, int); +extern int rtnl_sfq_get_quantum(struct rtnl_qdisc *); + +extern int rtnl_sfq_set_limit(struct rtnl_qdisc *, int); +extern int rtnl_sfq_get_limit(struct rtnl_qdisc *); + +extern int rtnl_sfq_set_perturb(struct rtnl_qdisc *, int); +extern int rtnl_sfq_get_perturb(struct rtnl_qdisc *); + +extern int rtnl_sfq_get_divisor(struct rtnl_qdisc *); + +#endif diff --git a/include/netlink/route/sch/tbf.h b/include/netlink/route/sch/tbf.h new file mode 100644 index 0000000..96f1d82 --- /dev/null +++ b/include/netlink/route/sch/tbf.h @@ -0,0 +1,35 @@ +/* + * netlink/route/sch/tbf.h TBF Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_TBF_H_ +#define NETLINK_TBF_H_ + +#include +#include + +extern int rtnl_qdisc_tbf_set_limit(struct rtnl_qdisc *, int); +extern int rtnl_qdisc_tbf_set_limit_by_latency(struct rtnl_qdisc *, int); +extern int rtnl_qdisc_tbf_get_limit(struct rtnl_qdisc *); + +extern int rtnl_qdisc_tbf_set_mpu(struct rtnl_qdisc *, int); +extern int rtnl_qdisc_tbf_get_mpu(struct rtnl_qdisc *); + +extern int rtnl_qdisc_tbf_set_rate(struct rtnl_qdisc *, int, int, int); +extern int rtnl_qdisc_tbf_get_rate(struct rtnl_qdisc *); +extern int rtnl_qdisc_tbf_get_rate_bucket(struct rtnl_qdisc *); +extern int rtnl_qdisc_tbf_get_rate_cell(struct rtnl_qdisc *); + +extern int rtnl_qdisc_tbf_set_peakrate(struct rtnl_qdisc *, int, int, int); +extern int rtnl_qdisc_tbf_get_peakrate(struct rtnl_qdisc *); +extern int rtnl_qdisc_tbf_get_peakrate_bucket(struct rtnl_qdisc *); +extern int rtnl_qdisc_tbf_get_peakrate_cell(struct rtnl_qdisc *); + +#endif diff --git a/include/netlink/route/tc.h b/include/netlink/route/tc.h new file mode 100644 index 0000000..3834c55 --- /dev/null +++ b/include/netlink/route/tc.h @@ -0,0 +1,55 @@ +/* + * netlink/route/tc.h Traffic Control + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_TC_H_ +#define NETLINK_TC_H_ + +#include +#include +#include + +/** + * TC statistics identifiers + * @ingroup tc + */ +enum rtnl_tc_stats_id { + RTNL_TC_PACKETS, /**< Packets seen */ + RTNL_TC_BYTES, /**< Bytes seen */ + RTNL_TC_RATE_BPS, /**< Current bits/s (rate estimator) */ + RTNL_TC_RATE_PPS, /**< Current packet/s (rate estimator) */ + RTNL_TC_QLEN, /**< Queue length */ + RTNL_TC_BACKLOG, /**< Backlog length */ + RTNL_TC_DROPS, /**< Packets dropped */ + RTNL_TC_REQUEUES, /**< Number of requeues */ + RTNL_TC_OVERLIMITS, /**< Number of overlimits */ + __RTNL_TC_STATS_MAX, +}; + +#define RTNL_TC_STATS_MAX (__RTNL_TC_STATS_MAX - 1) + +extern int rtnl_tc_calc_txtime(int, int); +extern int rtnl_tc_calc_bufsize(int, int); +extern int rtnl_tc_calc_cell_log(int); + +/** + * Number of entries in a transmission time lookup table + * @ingroup tc + */ +#define RTNL_TC_RTABLE_SIZE 256 + +extern int rtnl_tc_build_rate_table(uint32_t *, uint8_t, uint8_t, int, int); + + +/* TC Handle Translations */ +extern char * rtnl_tc_handle2str(uint32_t, char *, size_t); +extern int rtnl_tc_str2handle(const char *, uint32_t *); + +#endif diff --git a/include/netlink/rtnetlink-kernel.h b/include/netlink/rtnetlink-kernel.h new file mode 100644 index 0000000..2149ee5 --- /dev/null +++ b/include/netlink/rtnetlink-kernel.h @@ -0,0 +1,853 @@ +#ifndef __LINUX_RTNETLINK_H +#define __LINUX_RTNETLINK_H + +/** + * @anchor rtnlmsgtypes + * @name Specialized Message Types for Routing Netlink + * @ingroup rtnl + * @{ + */ + +enum { + RTM_BASE = 16, +#define RTM_BASE RTM_BASE + + RTM_NEWLINK = 16, +#define RTM_NEWLINK RTM_NEWLINK + RTM_DELLINK, +#define RTM_DELLINK RTM_DELLINK + RTM_GETLINK, +#define RTM_GETLINK RTM_GETLINK + RTM_SETLINK, +#define RTM_SETLINK RTM_SETLINK + + RTM_NEWADDR = 20, +#define RTM_NEWADDR RTM_NEWADDR + RTM_DELADDR, +#define RTM_DELADDR RTM_DELADDR + RTM_GETADDR, +#define RTM_GETADDR RTM_GETADDR + + RTM_NEWROUTE = 24, +#define RTM_NEWROUTE RTM_NEWROUTE + RTM_DELROUTE, +#define RTM_DELROUTE RTM_DELROUTE + RTM_GETROUTE, +#define RTM_GETROUTE RTM_GETROUTE + + RTM_NEWNEIGH = 28, +#define RTM_NEWNEIGH RTM_NEWNEIGH + RTM_DELNEIGH, +#define RTM_DELNEIGH RTM_DELNEIGH + RTM_GETNEIGH, +#define RTM_GETNEIGH RTM_GETNEIGH + + RTM_NEWRULE = 32, +#define RTM_NEWRULE RTM_NEWRULE + RTM_DELRULE, +#define RTM_DELRULE RTM_DELRULE + RTM_GETRULE, +#define RTM_GETRULE RTM_GETRULE + + RTM_NEWQDISC = 36, +#define RTM_NEWQDISC RTM_NEWQDISC + RTM_DELQDISC, +#define RTM_DELQDISC RTM_DELQDISC + RTM_GETQDISC, +#define RTM_GETQDISC RTM_GETQDISC + + RTM_NEWTCLASS = 40, +#define RTM_NEWTCLASS RTM_NEWTCLASS + RTM_DELTCLASS, +#define RTM_DELTCLASS RTM_DELTCLASS + RTM_GETTCLASS, +#define RTM_GETTCLASS RTM_GETTCLASS + + RTM_NEWTFILTER = 44, +#define RTM_NEWTFILTER RTM_NEWTFILTER + RTM_DELTFILTER, +#define RTM_DELTFILTER RTM_DELTFILTER + RTM_GETTFILTER, +#define RTM_GETTFILTER RTM_GETTFILTER + + RTM_NEWACTION = 48, +#define RTM_NEWACTION RTM_NEWACTION + RTM_DELACTION, +#define RTM_DELACTION RTM_DELACTION + RTM_GETACTION, +#define RTM_GETACTION RTM_GETACTION + + RTM_NEWPREFIX = 52, +#define RTM_NEWPREFIX RTM_NEWPREFIX + RTM_GETPREFIX = 54, +#define RTM_GETPREFIX RTM_GETPREFIX + + RTM_GETMULTICAST = 58, +#define RTM_GETMULTICAST RTM_GETMULTICAST + + RTM_GETANYCAST = 62, +#define RTM_GETANYCAST RTM_GETANYCAST + + RTM_NEWNEIGHTBL = 64, +#define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL + RTM_GETNEIGHTBL = 66, +#define RTM_GETNEIGHTBL RTM_GETNEIGHTBL + RTM_SETNEIGHTBL, +#define RTM_SETNEIGHTBL RTM_SETNEIGHTBL + + __RTM_MAX, +}; + +#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1) + +/** @} */ + +#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE) +#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2) +#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2) + + +struct rtmsg +{ + unsigned char rtm_family; + unsigned char rtm_dst_len; + unsigned char rtm_src_len; + unsigned char rtm_tos; + + unsigned char rtm_table; /* Routing table id */ + unsigned char rtm_protocol; /* Routing protocol; see below */ + unsigned char rtm_scope; /* See below */ + unsigned char rtm_type; /* See below */ + + unsigned rtm_flags; +}; + +/* rtm_type */ + +enum +{ + RTN_UNSPEC, + RTN_UNICAST, /* Gateway or direct route */ + RTN_LOCAL, /* Accept locally */ + RTN_BROADCAST, /* Accept locally as broadcast, + send as broadcast */ + RTN_ANYCAST, /* Accept locally as broadcast, + but send as unicast */ + RTN_MULTICAST, /* Multicast route */ + RTN_BLACKHOLE, /* Drop */ + RTN_UNREACHABLE, /* Destination is unreachable */ + RTN_PROHIBIT, /* Administratively prohibited */ + RTN_THROW, /* Not in this table */ + RTN_NAT, /* Translate this address */ + RTN_XRESOLVE, /* Use external resolver */ + __RTN_MAX +}; + +#define RTN_MAX (__RTN_MAX - 1) + + +/* rtm_protocol */ + +#define RTPROT_UNSPEC 0 +#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects; + not used by current IPv4 */ +#define RTPROT_KERNEL 2 /* Route installed by kernel */ +#define RTPROT_BOOT 3 /* Route installed during boot */ +#define RTPROT_STATIC 4 /* Route installed by administrator */ + +/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel; + they are just passed from user and back as is. + It will be used by hypothetical multiple routing daemons. + Note that protocol values should be standardized in order to + avoid conflicts. + */ + +#define RTPROT_GATED 8 /* Apparently, GateD */ +#define RTPROT_RA 9 /* RDISC/ND router advertisements */ +#define RTPROT_MRT 10 /* Merit MRT */ +#define RTPROT_ZEBRA 11 /* Zebra */ +#define RTPROT_BIRD 12 /* BIRD */ +#define RTPROT_DNROUTED 13 /* DECnet routing daemon */ +#define RTPROT_XORP 14 /* XORP */ + +/* rtm_scope + + Really it is not scope, but sort of distance to the destination. + NOWHERE are reserved for not existing destinations, HOST is our + local addresses, LINK are destinations, located on directly attached + link and UNIVERSE is everywhere in the Universe. + + Intermediate values are also possible f.e. interior routes + could be assigned a value between UNIVERSE and LINK. +*/ + +enum rt_scope_t +{ + RT_SCOPE_UNIVERSE=0, +/* User defined values */ + RT_SCOPE_SITE=200, + RT_SCOPE_LINK=253, + RT_SCOPE_HOST=254, + RT_SCOPE_NOWHERE=255 +}; + +/* rtm_flags */ + +#define RTM_F_NOTIFY 0x100 /* Notify user of route change */ +#define RTM_F_CLONED 0x200 /* This route is cloned */ +#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */ +#define RTM_F_PREFIX 0x800 /* Prefix addresses */ + +/* Reserved table identifiers */ + +enum rt_class_t +{ + RT_TABLE_UNSPEC=0, +/* User defined values */ + RT_TABLE_DEFAULT=253, + RT_TABLE_MAIN=254, + RT_TABLE_LOCAL=255, + __RT_TABLE_MAX +}; +#define RT_TABLE_MAX (__RT_TABLE_MAX - 1) + + + +/* Routing message attributes */ + +enum rtattr_type_t +{ + RTA_UNSPEC, + RTA_DST, + RTA_SRC, + RTA_IIF, + RTA_OIF, + RTA_GATEWAY, + RTA_PRIORITY, + RTA_PREFSRC, + RTA_METRICS, + RTA_MULTIPATH, + RTA_PROTOINFO, + RTA_FLOW, + RTA_CACHEINFO, + RTA_SESSION, + RTA_MP_ALGO, + __RTA_MAX +}; + +#define RTA_MAX (__RTA_MAX - 1) + +#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg)))) +#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg)) + +/* RTM_MULTIPATH --- array of struct rtnexthop. + * + * "struct rtnexthop" describes all necessary nexthop information, + * i.e. parameters of path to a destination via this nexthop. + * + * At the moment it is impossible to set different prefsrc, mtu, window + * and rtt for different paths from multipath. + */ + +struct rtnexthop +{ + unsigned short rtnh_len; + unsigned char rtnh_flags; + unsigned char rtnh_hops; + int rtnh_ifindex; +}; + +/* rtnh_flags */ + +#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */ +#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */ +#define RTNH_F_ONLINK 4 /* Gateway is forced on link */ + +/* Macros to handle hexthops */ + +#define RTNH_ALIGNTO 4 +#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) ) +#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \ + ((int)(rtnh)->rtnh_len) <= (len)) +#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len))) +#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len)) +#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len)) +#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0))) + +/* RTM_CACHEINFO */ + +struct rta_cacheinfo +{ + __u32 rta_clntref; + __u32 rta_lastuse; + __s32 rta_expires; + __u32 rta_error; + __u32 rta_used; + +#define RTNETLINK_HAVE_PEERINFO 1 + __u32 rta_id; + __u32 rta_ts; + __u32 rta_tsage; +}; + +/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */ + +enum +{ + RTAX_UNSPEC, +#define RTAX_UNSPEC RTAX_UNSPEC + RTAX_LOCK, +#define RTAX_LOCK RTAX_LOCK + RTAX_MTU, +#define RTAX_MTU RTAX_MTU + RTAX_WINDOW, +#define RTAX_WINDOW RTAX_WINDOW + RTAX_RTT, +#define RTAX_RTT RTAX_RTT + RTAX_RTTVAR, +#define RTAX_RTTVAR RTAX_RTTVAR + RTAX_SSTHRESH, +#define RTAX_SSTHRESH RTAX_SSTHRESH + RTAX_CWND, +#define RTAX_CWND RTAX_CWND + RTAX_ADVMSS, +#define RTAX_ADVMSS RTAX_ADVMSS + RTAX_REORDERING, +#define RTAX_REORDERING RTAX_REORDERING + RTAX_HOPLIMIT, +#define RTAX_HOPLIMIT RTAX_HOPLIMIT + RTAX_INITCWND, +#define RTAX_INITCWND RTAX_INITCWND + RTAX_FEATURES, +#define RTAX_FEATURES RTAX_FEATURES + __RTAX_MAX +}; + +#define RTAX_MAX (__RTAX_MAX - 1) + +/** + * @name Features Metric Flags + * @{ + */ + +#define RTAX_FEATURE_ECN 0x00000001 +#define RTAX_FEATURE_SACK 0x00000002 +#define RTAX_FEATURE_TIMESTAMP 0x00000004 +#define RTAX_FEATURE_ALLFRAG 0x00000008 + +/** @} */ + +struct rta_session +{ + __u8 proto; + + union { + struct { + __u16 sport; + __u16 dport; + } ports; + + struct { + __u8 type; + __u8 code; + __u16 ident; + } icmpt; + + __u32 spi; + } u; +}; + + +/********************************************************* + * Interface address. + ****/ + +struct ifaddrmsg +{ + unsigned char ifa_family; + unsigned char ifa_prefixlen; /* The prefix length */ + unsigned char ifa_flags; /* Flags */ + unsigned char ifa_scope; /* See above */ + int ifa_index; /* Link index */ +}; + +enum +{ + IFA_UNSPEC, + IFA_ADDRESS, + IFA_LOCAL, + IFA_LABEL, + IFA_BROADCAST, + IFA_ANYCAST, + IFA_CACHEINFO, + IFA_MULTICAST, + __IFA_MAX +}; + +#define IFA_MAX (__IFA_MAX - 1) + +/** + * @name Address Flags + * @{ + */ + +#define IFA_F_SECONDARY 0x01 +#define IFA_F_TEMPORARY IFA_F_SECONDARY + +#define IFA_F_DEPRECATED 0x20 +#define IFA_F_TENTATIVE 0x40 +#define IFA_F_PERMANENT 0x80 + +struct ifa_cacheinfo +{ + __u32 ifa_prefered; + __u32 ifa_valid; + __u32 cstamp; /* created timestamp, hundredths of seconds */ + __u32 tstamp; /* updated timestamp, hundredths of seconds */ +}; + + +#define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) +#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) + +/* + Important comment: + IFA_ADDRESS is prefix address, rather than local interface address. + It makes no difference for normally configured broadcast interfaces, + but for point-to-point IFA_ADDRESS is DESTINATION address, + local address is supplied in IFA_LOCAL attribute. + */ + +/************************************************************** + * Neighbour discovery. + ****/ + +struct ndmsg +{ + unsigned char ndm_family; + unsigned char ndm_pad1; + unsigned short ndm_pad2; + int ndm_ifindex; /* Link index */ + __u16 ndm_state; + __u8 ndm_flags; + __u8 ndm_type; +}; + +enum +{ + NDA_UNSPEC, + NDA_DST, + NDA_LLADDR, + NDA_CACHEINFO, + NDA_PROBES, + __NDA_MAX +}; + +#define NDA_MAX (__NDA_MAX - 1) + +#define NDA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) +#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) + +/* + * Neighbor Cache Entry Flags + */ + +#define NTF_PROXY 0x08 /* == ATF_PUBL */ +#define NTF_ROUTER 0x80 + +/* + * Neighbor Cache Entry States. + */ + +#define NUD_INCOMPLETE 0x01 +#define NUD_REACHABLE 0x02 +#define NUD_STALE 0x04 +#define NUD_DELAY 0x08 +#define NUD_PROBE 0x10 +#define NUD_FAILED 0x20 + +/* Dummy states */ +#define NUD_NOARP 0x40 +#define NUD_PERMANENT 0x80 +#define NUD_NONE 0x00 + + +struct nda_cacheinfo +{ + __u32 ndm_confirmed; + __u32 ndm_used; + __u32 ndm_updated; + __u32 ndm_refcnt; +}; + +/***************************************************************** + * Neighbour tables specific messages. + * + * Message Ordering: + * Phase 1: foreach neighbour table + * neighbour table base configuration and statistics + * NDTA_NAME, NDTA_CONFIG, NDTA_THRESH[1-3], NDTA_STATS + * NDTA_PARMS + * + * Phase 2: foreach neighbour table device parameter set + * NDTA_NAME, NDTA_PARMS + ****/ + +struct ndt_stats +{ + __u64 ndts_allocs; + __u64 ndts_destroys; + __u64 ndts_hash_grows; + __u64 ndts_res_failed; + __u64 ndts_lookups; + __u64 ndts_hits; + __u64 ndts_rcv_probes_mcast; + __u64 ndts_rcv_probes_ucast; + __u64 ndts_periodic_gc_runs; + __u64 ndts_forced_gc_runs; +}; + +enum { + NDTPA_UNSPEC, + NDTPA_IFINDEX, /* u32, read-only */ + NDTPA_REFCNT, /* u32, read-only */ + NDTPA_REACHABLE_TIME, /* u64, msecs, read-only */ + NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */ + NDTPA_RETRANS_TIME, /* u64, msecs */ + NDTPA_GC_STALETIME, /* u64, msecs */ + NDTPA_DELAY_PROBE_TIME, /* u64, msecs */ + NDTPA_QUEUE_LEN, /* u32 */ + NDTPA_APP_PROBES, /* u32 */ + NDTPA_UCAST_PROBES, /* u32 */ + NDTPA_MCAST_PROBES, /* u32 */ + NDTPA_ANYCAST_DELAY, /* u64, msecs */ + NDTPA_PROXY_DELAY, /* u64, msecs */ + NDTPA_PROXY_QLEN, /* u32 */ + NDTPA_LOCKTIME, /* u64, msecs */ + __NDTPA_MAX +}; +#define NDTPA_MAX (__NDTPA_MAX - 1) + +struct ndtmsg +{ + __u8 ndtm_family; + __u8 ndtm_pad1; + __u16 ndtm_pad2; +}; + +struct ndt_config +{ + __u16 ndtc_key_len; + __u16 ndtc_entry_size; + __u32 ndtc_entries; + __u32 ndtc_last_flush; /* delta to now in msecs */ + __u32 ndtc_last_rand; /* delta to now in msecs */ + __u32 ndtc_hash_rnd; + __u32 ndtc_hash_mask; + __u32 ndtc_hash_chain_gc; + __u32 ndtc_proxy_qlen; +}; + +enum { + NDTA_UNSPEC, + NDTA_NAME, /* char * */ + NDTA_THRESH1, /* u32 */ + NDTA_THRESH2, /* u32 */ + NDTA_THRESH3, /* u32 */ + NDTA_CONFIG, /* struct ndt_config */ + NDTA_PARMS, /* NDTPA_* */ + NDTA_STATS, /* struct ndt_stats */ + NDTA_GC_INTERVAL, /* u64, msecs */ + __NDTA_MAX +}; +#define NDTA_MAX (__NDTA_MAX - 1) + +#define NDTA_RTA(r) ((struct rtattr*)(((char*)(r)) + \ + NLMSG_ALIGN(sizeof(struct ndtmsg)))) +#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg)) + +/**** + * General form of address family dependent message. + ****/ + +struct rtgenmsg +{ + unsigned char rtgen_family; +}; + +/***************************************************************** + * Link layer specific messages. + ****/ + +/* struct ifinfomsg + * passes link level specific information, not dependent + * on network protocol. + */ + +struct ifinfomsg +{ + unsigned char ifi_family; + unsigned char __ifi_pad; + unsigned short ifi_type; /* ARPHRD_* */ + int ifi_index; /* Link index */ + unsigned ifi_flags; /* IFF_* flags */ + unsigned ifi_change; /* IFF_* change mask */ +}; + +/******************************************************************** + * prefix information + ****/ + +struct prefixmsg +{ + unsigned char prefix_family; + int prefix_ifindex; + unsigned char prefix_type; + unsigned char prefix_len; + unsigned char prefix_flags; +}; + +enum +{ + PREFIX_UNSPEC, + PREFIX_ADDRESS, + PREFIX_CACHEINFO, + __PREFIX_MAX +}; + +#define PREFIX_MAX (__PREFIX_MAX - 1) + +struct prefix_cacheinfo +{ + __u32 preferred_time; + __u32 valid_time; +}; + +/* The struct should be in sync with struct net_device_stats */ +struct rtnl_link_stats +{ + __u32 rx_packets; /* total packets received */ + __u32 tx_packets; /* total packets transmitted */ + __u32 rx_bytes; /* total bytes received */ + __u32 tx_bytes; /* total bytes transmitted */ + __u32 rx_errors; /* bad packets received */ + __u32 tx_errors; /* packet transmit problems */ + __u32 rx_dropped; /* no space in linux buffers */ + __u32 tx_dropped; /* no space available in linux */ + __u32 multicast; /* multicast packets received */ + __u32 collisions; + + /* detailed rx_errors: */ + __u32 rx_length_errors; + __u32 rx_over_errors; /* receiver ring buff overflow */ + __u32 rx_crc_errors; /* recved pkt with crc error */ + __u32 rx_frame_errors; /* recv'd frame alignment error */ + __u32 rx_fifo_errors; /* recv'r fifo overrun */ + __u32 rx_missed_errors; /* receiver missed packet */ + + /* detailed tx_errors */ + __u32 tx_aborted_errors; + __u32 tx_carrier_errors; + __u32 tx_fifo_errors; + __u32 tx_heartbeat_errors; + __u32 tx_window_errors; + + /* for cslip etc */ + __u32 rx_compressed; + __u32 tx_compressed; +}; + +/* The struct should be in sync with struct ifmap */ +struct rtnl_link_ifmap +{ + __u64 mem_start; + __u64 mem_end; + __u64 base_addr; + __u16 irq; + __u8 dma; + __u8 port; +}; + +enum +{ + IFLA_UNSPEC, + IFLA_ADDRESS, + IFLA_BROADCAST, + IFLA_IFNAME, + IFLA_MTU, + IFLA_LINK, + IFLA_QDISC, + IFLA_STATS, + IFLA_COST, +#define IFLA_COST IFLA_COST + IFLA_PRIORITY, +#define IFLA_PRIORITY IFLA_PRIORITY + IFLA_MASTER, +#define IFLA_MASTER IFLA_MASTER + IFLA_WIRELESS, /* Wireless Extension event - see wireless.h */ +#define IFLA_WIRELESS IFLA_WIRELESS + IFLA_PROTINFO, /* Protocol specific information for a link */ +#define IFLA_PROTINFO IFLA_PROTINFO + IFLA_TXQLEN, +#define IFLA_TXQLEN IFLA_TXQLEN + IFLA_MAP, +#define IFLA_MAP IFLA_MAP + IFLA_WEIGHT, +#define IFLA_WEIGHT IFLA_WEIGHT + __IFLA_MAX +}; + + +#define IFLA_MAX (__IFLA_MAX - 1) + +#define IFLA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) +#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) + +/* ifi_flags. + + IFF_* flags. + + The only change is: + IFF_LOOPBACK, IFF_BROADCAST and IFF_POINTOPOINT are + more not changeable by user. They describe link media + characteristics and set by device driver. + + Comments: + - Combination IFF_BROADCAST|IFF_POINTOPOINT is invalid + - If neither of these three flags are set; + the interface is NBMA. + + - IFF_MULTICAST does not mean anything special: + multicasts can be used on all not-NBMA links. + IFF_MULTICAST means that this media uses special encapsulation + for multicast frames. Apparently, all IFF_POINTOPOINT and + IFF_BROADCAST devices are able to use multicasts too. + */ + +/* IFLA_LINK. + For usual devices it is equal ifi_index. + If it is a "virtual interface" (f.e. tunnel), ifi_link + can point to real physical interface (f.e. for bandwidth calculations), + or maybe 0, what means, that real media is unknown (usual + for IPIP tunnels, when route to endpoint is allowed to change) + */ + +/* Subtype attributes for IFLA_PROTINFO */ +enum +{ + IFLA_INET6_UNSPEC, + IFLA_INET6_FLAGS, /* link flags */ + IFLA_INET6_CONF, /* sysctl parameters */ + IFLA_INET6_STATS, /* statistics */ + IFLA_INET6_MCAST, /* MC things. What of them? */ + IFLA_INET6_CACHEINFO, /* time values and max reasm size */ + __IFLA_INET6_MAX +}; + +#define IFLA_INET6_MAX (__IFLA_INET6_MAX - 1) + +struct ifla_cacheinfo +{ + __u32 max_reasm_len; + __u32 tstamp; /* ipv6InterfaceTable updated timestamp */ + __u32 reachable_time; + __u32 retrans_time; +}; + +/***************************************************************** + * Traffic control messages. + ****/ + +struct tcmsg +{ + unsigned char tcm_family; + unsigned char tcm__pad1; + unsigned short tcm__pad2; + int tcm_ifindex; + __u32 tcm_handle; + __u32 tcm_parent; + __u32 tcm_info; +}; + +enum +{ + TCA_UNSPEC, + TCA_KIND, + TCA_OPTIONS, + TCA_STATS, + TCA_XSTATS, + TCA_RATE, + TCA_FCNT, + TCA_STATS2, + __TCA_MAX +}; + +#define TCA_MAX (__TCA_MAX - 1) + +#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg)))) +#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg)) + + +/* RTnetlink multicast groups */ + +#define RTMGRP_LINK 1 +#define RTMGRP_NOTIFY 2 +#define RTMGRP_NEIGH 4 +#define RTMGRP_TC 8 + +#define RTMGRP_IPV4_IFADDR 0x10 +#define RTMGRP_IPV4_MROUTE 0x20 +#define RTMGRP_IPV4_ROUTE 0x40 + +#define RTMGRP_IPV6_IFADDR 0x100 +#define RTMGRP_IPV6_MROUTE 0x200 +#define RTMGRP_IPV6_ROUTE 0x400 +#define RTMGRP_IPV6_IFINFO 0x800 + +#define RTMGRP_DECnet_IFADDR 0x1000 +#define RTMGRP_DECnet_ROUTE 0x4000 + +#define RTMGRP_IPV6_PREFIX 0x20000 + +/* RTnetlink multicast groups */ +enum rtnetlink_groups { + RTNLGRP_NONE, + RTNLGRP_LINK, + RTNLGRP_NOTIFY, + RTNLGRP_NEIGH, + RTNLGRP_TC, + RTNLGRP_IPV4_IFADDR, + RTNLGRP_IPV4_MROUTE, + RTNLGRP_IPV4_ROUTE, + RTNLGRP_IPV4_RULE, + RTNLGRP_IPV6_IFADDR, + RTNLGRP_IPV6_MROUTE, + RTNLGRP_IPV6_ROUTE, + RTNLGRP_IPV6_IFINFO, + RTNLGRP_DECnet_IFADDR, + RTNLGRP_NOP2, + RTNLGRP_DECnet_ROUTE, + RTNLGRP_NOP3, + RTNLGRP_NOP4, + RTNLGRP_IPV6_PREFIX, + RTNLGRP_FIB_MAGIC, + __RTNLGRP_MAX +}; +#define RTNLGRP_MAX (__RTNLGRP_MAX - 1) + + +/* TC action piece */ +struct tcamsg +{ + unsigned char tca_family; + unsigned char tca__pad1; + unsigned short tca__pad2; +}; +#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg)))) +#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg)) +#define TCA_ACT_TAB 1 /* attr type must be >=1 */ +#define TCAA_MAX 1 + +/* End of information exported to user level */ + +#endif /* __LINUX_RTNETLINK_H */ diff --git a/include/netlink/types.h b/include/netlink/types.h new file mode 100644 index 0000000..903028e --- /dev/null +++ b/include/netlink/types.h @@ -0,0 +1,105 @@ +/* + * netlink/netlink-types.h Netlink Types + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef __NETLINK_TYPES_H_ +#define __NETLINK_TYPES_H_ + +#include + +/** + * Dumping types (dp_type) + * @ingroup utils + */ +enum nl_dump_type { + NL_DUMP_BRIEF, /**< Dump object in a brief one-liner */ + NL_DUMP_FULL, /**< Dump all attributes but no statistics */ + NL_DUMP_STATS, /**< Dump all attributes including statistics */ + NL_DUMP_XML, /**< Dump all attribtes in XML format */ + NL_DUMP_ENV, /**< Dump all attribtues as env variables */ + NL_DUMP_EVENTS, /**< Dump event */ + __NL_DUMP_MAX, +}; +#define NL_DUMP_MAX (__NL_DUMP_MAX - 1) + +/** + * Dumping parameters + * @ingroup utils + */ +struct nl_dump_params +{ + /** + * Specifies the type of dump that is requested. + */ + enum nl_dump_type dp_type; + + /** + * Specifies the number of whitespaces to be put in front + * of every new line (indentation). + */ + int dp_prefix; + + /** + * Causes the cache index to be printed for each element. + */ + int dp_print_index; + + /** + * Causes each element to be prefixed with the message type. + */ + int dp_dump_msgtype; + + /** + * A callback invoked for output + * + * Passed arguments are: + * - dumping parameters + * - string to append to the output + */ + void (*dp_cb)(struct nl_dump_params *, char *); + + /** + * A callback invoked for every new line, can be used to + * customize the indentation. + * + * Passed arguments are: + * - dumping parameters + * - line number starting from 0 + */ + void (*dp_nl_cb)(struct nl_dump_params *, int); + + /** + * User data pointer, can be used to pass data to callbacks. + */ + void *dp_data; + + /** + * File descriptor the dumping output should go to + */ + FILE * dp_fd; + + /** + * Alternatively the output may be redirected into a buffer + */ + char * dp_buf; + + /** + * Length of the buffer dp_buf + */ + size_t dp_buflen; + + /** + * PRIVATE + * Set if a dump was performed prior to the actual dump handler. + */ + int dp_pre_dump; +}; + +#endif diff --git a/include/netlink/utils.h b/include/netlink/utils.h new file mode 100644 index 0000000..3ce70a1 --- /dev/null +++ b/include/netlink/utils.h @@ -0,0 +1,64 @@ +/* + * netlink/utils.h Utility Functions + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef NETLINK_UTILS_H_ +#define NETLINK_UTILS_H_ + +#include +#include + +/** + * @name Probability Constants + * @{ + */ + +/** + * Lower probability limit + * @ingroup utils + */ +#define NL_PROB_MIN 0x0 + +/** + * Upper probability limit + * @ingroup utils + */ +#define NL_PROB_MAX 0xffffffff + +/** @} */ + +extern char * nl_geterror(void); +extern int nl_get_errno(void); + +/* unit pretty-printing */ +extern double nl_cancel_down_bytes(unsigned long long, char **); +extern double nl_cancel_down_bits(unsigned long long, char **); +extern double nl_cancel_down_us(uint32_t, char **); + +/* generic unit translations */ +extern long nl_size2int(const char *); +extern long nl_prob2int(const char *); + +/* time translations */ +extern int nl_get_hz(void); +extern uint32_t nl_us2ticks(uint32_t); +extern uint32_t nl_ticks2us(uint32_t); +extern char * nl_msec2str(uint64_t, char *, size_t); + +/* link layer protocol translations */ +extern char * nl_llproto2str(int, char *, size_t); +extern int nl_str2llproto(const char *); + +/* ethernet protocol translations */ +extern char * nl_ether_proto2str(int, char *, size_t); +extern int nl_str2ether_proto(const char *); + + +#endif diff --git a/install-sh b/install-sh new file mode 100755 index 0000000..6ce63b9 --- /dev/null +++ b/install-sh @@ -0,0 +1,294 @@ +#!/bin/sh +# +# install - install a program, script, or datafile +# +# This originates from X11R5 (mit/util/scripts/install.sh), which was +# later released in X11R6 (xc/config/util/install.sh) with the +# following copyright and license. +# +# Copyright (C) 1994 X Consortium +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to +# deal in the Software without restriction, including without limitation the +# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +# sell copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- +# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +# +# Except as contained in this notice, the name of the X Consortium shall not +# be used in advertising or otherwise to promote the sale, use or other deal- +# ings in this Software without prior written authorization from the X Consor- +# tium. +# +# +# FSF changes to this file are in the public domain. +# +# Calling this script install-sh is preferred over install.sh, to prevent +# `make' implicit rules from creating a file called install from it +# when there is no Makefile. +# +# This script is compatible with the BSD install script, but was written +# from scratch. It can only install one file at a time, a restriction +# shared with many OS's install programs. + + +# set DOITPROG to echo to test this script + +# Don't use :- since 4.3BSD and earlier shells don't like it. +doit="${DOITPROG-}" + + +# put in absolute paths if you don't have them in your path; or use env. vars. + +mvprog="${MVPROG-mv}" +cpprog="${CPPROG-cp}" +chmodprog="${CHMODPROG-chmod}" +chownprog="${CHOWNPROG-chown}" +chgrpprog="${CHGRPPROG-chgrp}" +stripprog="${STRIPPROG-strip}" +rmprog="${RMPROG-rm}" +mkdirprog="${MKDIRPROG-mkdir}" + +transformbasename="" +transform_arg="" +instcmd="$mvprog" +chmodcmd="$chmodprog 0755" +chowncmd="" +chgrpcmd="" +stripcmd="" +rmcmd="$rmprog -f" +mvcmd="$mvprog" +src="" +dst="" +dir_arg="" + +while [ x"$1" != x ]; do + case $1 in + -c) instcmd=$cpprog + shift + continue;; + + -d) dir_arg=true + shift + continue;; + + -m) chmodcmd="$chmodprog $2" + shift + shift + continue;; + + -o) chowncmd="$chownprog $2" + shift + shift + continue;; + + -g) chgrpcmd="$chgrpprog $2" + shift + shift + continue;; + + -s) stripcmd=$stripprog + shift + continue;; + + -t=*) transformarg=`echo $1 | sed 's/-t=//'` + shift + continue;; + + -b=*) transformbasename=`echo $1 | sed 's/-b=//'` + shift + continue;; + + *) if [ x"$src" = x ] + then + src=$1 + else + # this colon is to work around a 386BSD /bin/sh bug + : + dst=$1 + fi + shift + continue;; + esac +done + +if [ x"$src" = x ] +then + echo "$0: no input file specified" >&2 + exit 1 +else + : +fi + +if [ x"$dir_arg" != x ]; then + dst=$src + src="" + + if [ -d "$dst" ]; then + instcmd=: + chmodcmd="" + else + instcmd=$mkdirprog + fi +else + +# Waiting for this to be detected by the "$instcmd $src $dsttmp" command +# might cause directories to be created, which would be especially bad +# if $src (and thus $dsttmp) contains '*'. + + if [ -f "$src" ] || [ -d "$src" ] + then + : + else + echo "$0: $src does not exist" >&2 + exit 1 + fi + + if [ x"$dst" = x ] + then + echo "$0: no destination specified" >&2 + exit 1 + else + : + fi + +# If destination is a directory, append the input filename; if your system +# does not like double slashes in filenames, you may need to add some logic + + if [ -d "$dst" ] + then + dst=$dst/`basename "$src"` + else + : + fi +fi + +## this sed command emulates the dirname command +dstdir=`echo "$dst" | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'` + +# Make sure that the destination directory exists. +# this part is taken from Noah Friedman's mkinstalldirs script + +# Skip lots of stat calls in the usual case. +if [ ! -d "$dstdir" ]; then +defaultIFS=' + ' +IFS="${IFS-$defaultIFS}" + +oIFS=$IFS +# Some sh's can't handle IFS=/ for some reason. +IFS='%' +set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'` +IFS=$oIFS + +pathcomp='' + +while [ $# -ne 0 ] ; do + pathcomp=$pathcomp$1 + shift + + if [ ! -d "$pathcomp" ] ; + then + $mkdirprog "$pathcomp" + else + : + fi + + pathcomp=$pathcomp/ +done +fi + +if [ x"$dir_arg" != x ] +then + $doit $instcmd "$dst" && + + if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dst"; else : ; fi && + if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dst"; else : ; fi && + if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dst"; else : ; fi && + if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dst"; else : ; fi +else + +# If we're going to rename the final executable, determine the name now. + + if [ x"$transformarg" = x ] + then + dstfile=`basename "$dst"` + else + dstfile=`basename "$dst" $transformbasename | + sed $transformarg`$transformbasename + fi + +# don't allow the sed command to completely eliminate the filename + + if [ x"$dstfile" = x ] + then + dstfile=`basename "$dst"` + else + : + fi + +# Make a couple of temp file names in the proper directory. + + dsttmp=$dstdir/_inst.$$_ + rmtmp=$dstdir/_rm.$$_ + +# Trap to clean up temp files at exit. + + trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0 + trap '(exit $?); exit' 1 2 13 15 + +# Move or copy the file name to the temp name + + $doit $instcmd "$src" "$dsttmp" && + +# and set any options; do chmod last to preserve setuid bits + +# If any of these fail, we abort the whole thing. If we want to +# ignore errors from any of these, just make sure not to ignore +# errors from the above "$doit $instcmd $src $dsttmp" command. + + if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dsttmp"; else :;fi && + if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dsttmp"; else :;fi && + if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dsttmp"; else :;fi && + if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dsttmp"; else :;fi && + +# Now remove or move aside any old file at destination location. We try this +# two ways since rm can't unlink itself on some systems and the destination +# file might be busy for other reasons. In this case, the final cleanup +# might fail but the new file should still install successfully. + +{ + if [ -f "$dstdir/$dstfile" ] + then + $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null || + $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null || + { + echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2 + (exit 1); exit + } + else + : + fi +} && + +# Now rename the file to the real destination. + + $doit $mvcmd "$dsttmp" "$dstdir/$dstfile" + +fi && + +# The final little trick to "correctly" pass the exit status to the exit trap. + +{ + (exit 0); exit +} diff --git a/lib/Makefile b/lib/Makefile new file mode 100644 index 0000000..ba5ac6d --- /dev/null +++ b/lib/Makefile @@ -0,0 +1,76 @@ +# +# lib/Makefile +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation version 2.1 +# of the License. +# +# Copyright (c) 2003-2006 Thomas Graf +# + +ifeq ($(shell [ ! -r ../Makefile.opts ] && echo 1),) + include ../Makefile.opts +endif + +# Core +CIN := $(wildcard *.c) +# NETLINK_ROUTE +CIN += $(wildcard route/*.c) +# Schedulers +CIN += $(wildcard route/sch/*.c) +# Classifiers +CIN += $(wildcard route/cls/*.c) +# fib lookup +CIN += $(wildcard fib_lookup/*.c) + +DEPS := $(CIN:%.c=.deps/%.d) +OBJ := $(CIN:%.c=%.o) +CFLAGS += -fPIC +OUT_SLIB := $(PACKAGE_NAME).so.$(PACKAGE_VERSION) +OUT_AR := $(PACKAGE_NAME).a +LN_SLIB := $(PACKAGE_NAME).so +LN1_SLIB := $(LN_SLIB).1 + +export + +.PHONY: all clean install librtn.a $(OUT_SLIB) + + +all: + @echo " MAKE $(OUT_SLIB)"; \ + $(MAKE) $(OUT_SLIB); \ + $(MAKE) $(OUT_AR) + +$(OUT_SLIB): ../Makefile.opts $(OBJ) + @echo " LD $(OUT_SLIB)"; \ + $(CC) -shared -Wl,-soname,libnl.so.1 -o $(OUT_SLIB) $(OBJ) $(LIBNL_LIB) -lc + @echo " LN $(OUT_SLIB) $(LN1_SLIB)"; \ + rm -f $(LN1_SLIB) ; $(LN) -s $(OUT_SLIB) $(LN1_SLIB) + @echo " LN $(LN1_SLIB) $(LN_SLIB)"; \ + rm -f $(LN_SLIB) ; $(LN) -s $(LN1_SLIB) $(LN_SLIB) + +$(OUT_AR): ../Makefile.opts $(OBJ) + @echo " AR $(OUT_AR)"; \ + $(AR) crus $(OUT_AR) $(OBJ) + +clean: + @echo " CLEAN lib"; \ + $(RM) -f $(OBJ) $(OUT_SLIB) $(LN_SLIB) $(LN1_SLIB); \ + $(RM) -f $(OUT_SLIB) $(LN_SLIB) $(LN1_SLIB) + +distclean: + find .deps -iname \*\.d -exec rm -f '{}' \; + +install: + mkdir -p $(DESTDIR)$(libdir)/ + install -m 0755 $(OUT_SLIB) $(DESTDIR)$(libdir) + install -m 0644 $(OUT_AR) $(DESTDIR)$(libdir) + rm -f $(DESTDIR)$(libdir)/$(LN1_SLIB) + $(LN) -s $(OUT_SLIB) $(DESTDIR)$(libdir)/$(LN1_SLIB) + rm -f $(DESTDIR)$(libdir)/$(LN_SLIB) + $(LN) -s $(LN1_SLIB) $(DESTDIR)$(libdir)/$(LN_SLIB) + +$(DEPS): ../Makefile.opts + +include ../Makefile.rules diff --git a/lib/addr.c b/lib/addr.c new file mode 100644 index 0000000..d7b7858 --- /dev/null +++ b/lib/addr.c @@ -0,0 +1,902 @@ +/* + * lib/addr.c Abstract Address + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup utils + * @defgroup addr Abstract Address + * + * @par 1) Transform character string to abstract address + * @code + * struct nl_addr *a = nl_addr_parse("::1", AF_UNSPEC); + * printf("Address family: %s\n", nl_af2str(nl_addr_get_family(a))); + * nl_addr_put(a); + * a = nl_addr_parse("11:22:33:44:55:66", AF_UNSPEC); + * printf("Address family: %s\n", nl_af2str(nl_addr_get_family(a))); + * nl_addr_put(a); + * @endcode + * @{ + */ + +#include +#include +#include +#include +#include + +/* All this DECnet stuff is stolen from iproute2, thanks to whoever wrote + * this, probably Alexey. */ +static inline uint16_t dn_ntohs(uint16_t addr) +{ + union { + uint8_t byte[2]; + uint16_t word; + } u = { + .word = addr, + }; + + return ((uint16_t) u.byte[0]) | (((uint16_t) u.byte[1]) << 8); +} + +static inline int do_digit(char *str, uint16_t *addr, uint16_t scale, + size_t *pos, size_t len, int *started) +{ + uint16_t tmp = *addr / scale; + + if (*pos == len) + return 1; + + if (((tmp) > 0) || *started || (scale == 1)) { + *str = tmp + '0'; + *started = 1; + (*pos)++; + *addr -= (tmp * scale); + } + + return 0; +} + +static const char *dnet_ntop(char *addrbuf, size_t addrlen, char *str, + size_t len) +{ + uint16_t addr = dn_ntohs(*(uint16_t *)addrbuf); + uint16_t area = addr >> 10; + size_t pos = 0; + int started = 0; + + if (addrlen != 2) + return NULL; + + addr &= 0x03ff; + + if (len == 0) + return str; + + if (do_digit(str + pos, &area, 10, &pos, len, &started)) + return str; + + if (do_digit(str + pos, &area, 1, &pos, len, &started)) + return str; + + if (pos == len) + return str; + + *(str + pos) = '.'; + pos++; + started = 0; + + if (do_digit(str + pos, &addr, 1000, &pos, len, &started)) + return str; + + if (do_digit(str + pos, &addr, 100, &pos, len, &started)) + return str; + + if (do_digit(str + pos, &addr, 10, &pos, len, &started)) + return str; + + if (do_digit(str + pos, &addr, 1, &pos, len, &started)) + return str; + + if (pos == len) + return str; + + *(str + pos) = 0; + + return str; +} + +static int dnet_num(const char *src, uint16_t * dst) +{ + int rv = 0; + int tmp; + *dst = 0; + + while ((tmp = *src++) != 0) { + tmp -= '0'; + if ((tmp < 0) || (tmp > 9)) + return rv; + + rv++; + (*dst) *= 10; + (*dst) += tmp; + } + + return rv; +} + +static inline int dnet_pton(const char *src, char *addrbuf) +{ + uint16_t area = 0; + uint16_t node = 0; + int pos; + + pos = dnet_num(src, &area); + if ((pos == 0) || (area > 63) || + ((*(src + pos) != '.') && (*(src + pos) != ','))) + return -EINVAL; + + pos = dnet_num(src + pos + 1, &node); + if ((pos == 0) || (node > 1023)) + return -EINVAL; + + *(uint16_t *)addrbuf = dn_ntohs((area << 10) | node); + + return 1; +} + +/** + * @name Creating Abstract Addresses + * @{ + */ + +/** + * Allocate new abstract address object. + * @arg maxsize Maximum size of the binary address. + * @return Newly allocated address object or NULL + */ +struct nl_addr *nl_addr_alloc(size_t maxsize) +{ + struct nl_addr *addr; + + addr = calloc(1, sizeof(*addr) + maxsize); + if (!addr) { + nl_errno(ENOMEM); + return NULL; + } + + addr->a_refcnt = 1; + addr->a_maxsize = maxsize; + + return addr; +} + +/** + * Allocate new abstract address object based on a binary address. + * @arg family Address family. + * @arg buf Buffer containing the binary address. + * @arg size Length of binary address buffer. + * @return Newly allocated address handle or NULL + */ +struct nl_addr *nl_addr_build(int family, void *buf, size_t size) +{ + struct nl_addr *addr; + + addr = nl_addr_alloc(size); + if (!addr) + return NULL; + + addr->a_family = family; + addr->a_len = size; + addr->a_prefixlen = size*8; + + if (size) + memcpy(addr->a_addr, buf, size); + + return addr; +} + +/** + * Allocate abstract address object based on a character string + * @arg addrstr Address represented as character string. + * @arg hint Address family hint or AF_UNSPEC. + * + * Regognizes the following address formats: + *@code + * Format Len Family + * ---------------------------------------------------------------- + * IPv6 address format 16 AF_INET6 + * ddd.ddd.ddd.ddd 4 AF_INET + * HH:HH:HH:HH:HH:HH 6 AF_LLC + * AA{.|,}NNNN 2 AF_DECnet + * HH:HH:HH:... variable AF_UNSPEC + * @endcode + * + * Special values: + * - none: All bits and length set to 0. + * - {default|all|any}: All bits set to 0, length based on hint or + * AF_INET if no hint is given. + * + * The prefix length may be appened at the end prefixed with a + * slash, e.g. 10.0.0.0/8. + * + * @return Newly allocated abstract address object or NULL. + */ +struct nl_addr *nl_addr_parse(const char *addrstr, int hint) +{ + int err, copy = 0, len = 0, family = AF_UNSPEC; + char *str, *prefix, buf[32]; + struct nl_addr *addr = NULL; /* gcc ain't that smart */ + + str = strdup(addrstr); + if (!str) { + err = nl_errno(ENOMEM); + goto errout; + } + + prefix = strchr(str, '/'); + if (prefix) + *prefix = '\0'; + + if (!strcasecmp(str, "none")) { + family = hint; + goto prefix; + } + + if (!strcasecmp(str, "default") || + !strcasecmp(str, "all") || + !strcasecmp(str, "any")) { + + switch (hint) { + case AF_INET: + case AF_UNSPEC: + /* Kind of a hack, we assume that if there is + * no hint given the user wants to have a IPv4 + * address given back. */ + family = AF_INET; + len = 4; + goto prefix; + + case AF_INET6: + family = AF_INET6; + len = 16; + goto prefix; + + case AF_LLC: + family = AF_LLC; + len = 6; + goto prefix; + + default: + err = nl_error(EINVAL, "Unsuported address" \ + "family for default address"); + goto errout; + } + } + + copy = 1; + + if (hint == AF_INET || hint == AF_UNSPEC) { + if (inet_pton(AF_INET, str, buf) > 0) { + family = AF_INET; + len = 4; + goto prefix; + } + if (hint == AF_INET) { + err = nl_error(EINVAL, "Invalid IPv4 address"); + goto errout; + } + } + + if (hint == AF_INET6 || hint == AF_UNSPEC) { + if (inet_pton(AF_INET6, str, buf) > 0) { + family = AF_INET6; + len = 16; + goto prefix; + } + if (hint == AF_INET6) { + err = nl_error(EINVAL, "Invalid IPv6 address"); + goto errout; + } + } + + if ((hint == AF_LLC || hint == AF_UNSPEC) && strchr(str, ':')) { + unsigned int a, b, c, d, e, f; + + if (sscanf(str, "%02x:%02x:%02x:%02x:%02x:%02x", + &a, &b, &c, &d, &e, &f) == 6) { + family = AF_LLC; + len = 6; + buf[0] = (unsigned char) a; + buf[1] = (unsigned char) b; + buf[2] = (unsigned char) c; + buf[3] = (unsigned char) d; + buf[4] = (unsigned char) e; + buf[5] = (unsigned char) f; + goto prefix; + } + + if (hint == AF_LLC) { + err = nl_error(EINVAL, "Invalid link layer address"); + goto errout; + } + } + + if ((hint == AF_DECnet || hint == AF_UNSPEC) && + (strchr(str, '.') || strchr(str, ','))) { + if (dnet_pton(str, buf) > 0) { + family = AF_DECnet; + len = 2; + goto prefix; + } + if (hint == AF_DECnet) { + err = nl_error(EINVAL, "Invalid DECnet address"); + goto errout; + } + } + + if (hint == AF_UNSPEC && strchr(str, ':')) { + int i = 0; + char *s = str, *p; + for (;;) { + long l = strtol(s, &p, 16); + + if (s == p || l > 0xff || i >= sizeof(buf)) { + err = -EINVAL; + goto errout; + } + + buf[i++] = (unsigned char) l; + if (*p == '\0') + break; + s = ++p; + } + + len = i; + family = AF_UNSPEC; + goto prefix; + } + + err = nl_error(EINVAL, "Invalid address"); + goto errout; + +prefix: + addr = nl_addr_alloc(len); + if (!addr) { + err = nl_errno(ENOMEM); + goto errout; + } + + nl_addr_set_family(addr, family); + + if (copy) + nl_addr_set_binary_addr(addr, buf, len); + + if (prefix) { + char *p; + long pl = strtol(++prefix, &p, 0); + if (p == prefix) { + nl_addr_destroy(addr); + err = -EINVAL; + goto errout; + } + nl_addr_set_prefixlen(addr, pl); + } else + nl_addr_set_prefixlen(addr, len * 8); + + err = 0; +errout: + free(str); + + return err ? NULL : addr; +} + +/** + * Clone existing abstract address object. + * @arg addr Abstract address object. + * @return Newly allocated abstract address object being a duplicate of the + * specified address object or NULL if a failure occured. + */ +struct nl_addr *nl_addr_clone(struct nl_addr *addr) +{ + struct nl_addr *new; + + new = nl_addr_build(addr->a_family, addr->a_addr, addr->a_len); + if (new) + new->a_prefixlen = addr->a_prefixlen; + + return new; +} + +/** @} */ + +/** + * @name Destroying Abstract Addresses + * @{ + */ + +/** + * Destroy abstract address object. + * @arg addr Abstract address object. + */ +void nl_addr_destroy(struct nl_addr *addr) +{ + if (!addr) + return; + + if (addr->a_refcnt != 1) + BUG(); + + free(addr); +} + +/** @} */ + +/** + * @name Managing Usage References + * @{ + */ + +/** + * Request undestroyable reference of abstract address object. + * @arg addr Abstract address object. + * @return Abstract address object of which the reference was given. + */ +struct nl_addr *nl_addr_get(struct nl_addr *addr) +{ + addr->a_refcnt++; + + return addr; +} + +/** + * Give back reference of abstract address object. + * @arg addr Abstract address object. + * + * Decrements the reference counter and destroys the object if the + * last reference was given back. + */ +void nl_addr_put(struct nl_addr *addr) +{ + if (!addr) + return; + + if (addr->a_refcnt == 1) + nl_addr_destroy(addr); + else + addr->a_refcnt--; +} + +/** + * Check whether an abstract address object is shared. + * @arg addr Abstract address object. + * @return Non-zero if the abstract address object is shared, otherwise 0. + */ +int nl_addr_shared(struct nl_addr *addr) +{ + return addr->a_refcnt > 1; +} + +/** @} */ + +/** + * @name Miscellaneous + * @{ + */ + +/** + * Compares two abstract address objects. + * @arg a A abstract address object. + * @arg b Another abstract address object. + * + * @return Integer less than, equal to or greather than zero if \c is found, + * respectively to be less than, to, or be greater than \c b. + */ +int nl_addr_cmp(struct nl_addr *a, struct nl_addr *b) +{ + int d = a->a_family - b->a_family; + + if (d == 0) { + d = a->a_len - b->a_len; + + if (a->a_len && d == 0) + return memcmp(a->a_addr, b->a_addr, a->a_len); + } + + return d; +} + +/** + * Check if an address matches a certain family. + * @arg addr Address represented as character string. + * @arg family Desired address family. + * + * @return 1 if the address is of the desired address family, + * otherwise 0 is returned. + */ +int nl_addr_valid(char *addr, int family) +{ + int ret; + char buf[32]; + + switch (family) { + case AF_INET: + case AF_INET6: + ret = inet_pton(family, addr, buf); + if (ret <= 0) + return 0; + break; + + case AF_DECnet: + ret = dnet_pton(addr, buf); + if (ret <= 0) + return 0; + break; + + case AF_LLC: + if (sscanf(addr, "%*02x:%*02x:%*02x:%*02x:%*02x:%*02x") != 6) + return 0; + break; + } + + return 1; +} + +/** + * Guess address family of an abstract address object based on address size. + * @arg addr Abstract address object. + * @return Address family or AF_UNSPEC if guessing wasn't successful. + */ +int nl_addr_guess_family(struct nl_addr *addr) +{ + switch (addr->a_len) { + case 4: + return AF_INET; + case 6: + return AF_LLC; + case 16: + return AF_INET6; + default: + return AF_UNSPEC; + } +} + +/** + * Fill out sockaddr structure with values from abstract address object. + * @arg addr Abstract address object. + * @arg sa Destination sockaddr structure buffer. + * @arg salen Length of sockaddr structure buffer. + * + * Fills out the specified sockaddr structure with the data found in the + * specified abstract address. The salen argument needs to be set to the + * size of sa but will be modified to the actual size used during before + * the function exits. + * + * @return 0 on success or a negative error code + */ +int nl_addr_fill_sockaddr(struct nl_addr *addr, struct sockaddr *sa, + socklen_t *salen) +{ + switch (addr->a_family) { + case AF_INET: { + struct sockaddr_in *sai = (struct sockaddr_in *) sa; + + if (*salen < sizeof(*sai)) + return -EINVAL; + + sai->sin_family = addr->a_family; + memcpy(&sai->sin_addr, addr->a_addr, 4); + *salen = sizeof(*sai); + } + break; + + case AF_INET6: { + struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa; + + if (*salen < sizeof(*sa6)) + return -EINVAL; + + sa6->sin6_family = addr->a_family; + memcpy(&sa6->sin6_addr, addr->a_addr, 16); + *salen = sizeof(*sa6); + } + break; + + default: + return -EINVAL; + } + + return 0; +} + + +/** @} */ + +/** + * @name Getting Information About Addresses + * @{ + */ + +/** + * Call getaddrinfo() for an abstract address object. + * @arg addr Abstract address object. + * + * Calls getaddrinfo() for the specified abstract address in AI_NUMERICHOST + * mode. + * + * @note The caller is responsible for freeing the linked list using the + * interface provided by getaddrinfo(3). + * + * @return A linked list of addrinfo handles or NULL with an error message + * associated. + */ +struct addrinfo *nl_addr_info(struct nl_addr *addr) +{ + int err; + struct addrinfo *res; + char buf[INET6_ADDRSTRLEN+5]; + struct addrinfo hint = { + .ai_flags = AI_NUMERICHOST, + .ai_family = addr->a_family, + }; + + nl_addr2str(addr, buf, sizeof(buf)); + + err = getaddrinfo(buf, NULL, &hint, &res); + if (err != 0) { + nl_error(err, gai_strerror(err)); + return NULL; + } + + return res; +} + +/** + * Resolve abstract address object to a name using getnameinfo(). + * @arg addr Abstract address object. + * @arg host Destination buffer for host name. + * @arg hostlen Length of destination buffer. + * + * Resolves the abstract address to a name and writes the looked up result + * into the host buffer. getnameinfo() is used to perform the lookup and + * is put into NI_NAMEREQD mode so the function will fail if the lookup + * couldn't be performed. + * + * @return 0 on success or a negative error code. + */ +int nl_addr_resolve(struct nl_addr *addr, char *host, size_t hostlen) +{ + int err; + struct sockaddr_in6 buf; + socklen_t salen = sizeof(buf); + + err = nl_addr_fill_sockaddr(addr, (struct sockaddr *) &buf, &salen); + if (err < 0) + return err; + + return getnameinfo((struct sockaddr *) &buf, salen, + host, hostlen, NULL, 0, NI_NAMEREQD); +} + +/** @} */ + +/** + * @name Attribute Access + * @{ + */ + +/** + * Set address family of abstract address object. + * @arg addr Abstract address object. + * @arg family New address family. + */ +void nl_addr_set_family(struct nl_addr *addr, int family) +{ + addr->a_family = family; +} + +/** + * Get address family of abstract address object. + * @arg addr Abstract address object. + */ +int nl_addr_get_family(struct nl_addr *addr) +{ + return addr->a_family; +} + +/** + * Set binary address of abstract address object. + * @arg addr Abstract address object. + * @arg buf Buffer containing binary address. + * @arg len Length of buffer containing binary address. + */ +int nl_addr_set_binary_addr(struct nl_addr *addr, void *buf, size_t len) +{ + if (len > addr->a_maxsize) + return -ERANGE; + + addr->a_len = len; + memcpy(addr->a_addr, buf, len); + + return 0; +} + +/** + * Get binary address of abstract address object. + * @arg addr Abstract address object. + */ +void *nl_addr_get_binary_addr(struct nl_addr *addr) +{ + return addr->a_addr; +} + +/** + * Get length of binary address of abstract address object. + * @arg addr Abstract address object. + */ +unsigned int nl_addr_get_len(struct nl_addr *addr) +{ + return addr->a_len; +} + +/** + * Set prefix length of abstract address object. + * @arg addr Abstract address object. + * @arg prefixlen New prefix length. + */ +void nl_addr_set_prefixlen(struct nl_addr *addr, int prefixlen) +{ + addr->a_prefixlen = prefixlen; +} + +/** + * Get prefix length of abstract address object. + * @arg addr Abstract address object. + */ +unsigned int nl_addr_get_prefixlen(struct nl_addr *addr) +{ + return addr->a_prefixlen; +} + +/** @} */ + +/** + * @name Translations to Strings + * @{ + */ + +/** + * Convert abstract address object to character string. + * @arg addr Abstract address object. + * @arg buf Destination buffer. + * @arg size Size of destination buffer. + * + * Converts an abstract address to a character string and stores + * the result in the specified destination buffer. + * + * @return Address represented in ASCII stored in destination buffer. + */ +char *nl_addr2str(struct nl_addr *addr, char *buf, size_t size) +{ + int i; + char tmp[16]; + + if (!addr->a_len) { + snprintf(buf, size, "none"); + goto prefix; + } + + switch (addr->a_family) { + case AF_INET: + inet_ntop(AF_INET, addr->a_addr, buf, size); + break; + + case AF_INET6: + inet_ntop(AF_INET6, addr->a_addr, buf, size); + break; + + case AF_DECnet: + dnet_ntop(addr->a_addr, addr->a_len, buf, size); + break; + + case AF_LLC: + default: + snprintf(buf, size, "%02x", addr->a_addr[0]); + for (i = 1; i < addr->a_len; i++) { + snprintf(tmp, sizeof(tmp), ":%02x", + addr->a_addr[i]); + strncat(buf, tmp, size - strlen(buf) - 1); + } + break; + } + +prefix: + if (addr->a_prefixlen != (8 * addr->a_len)) { + snprintf(tmp, sizeof(tmp), "/%u", addr->a_prefixlen); + strncat(buf, tmp, size - strlen(buf) - 1); + } + + return buf; +} + +/** @} */ + +/** + * @name Address Family Transformations + * @{ + */ + +static struct trans_tbl afs[] = { + __ADD(AF_UNSPEC,unspec) + __ADD(AF_UNIX,unix) + __ADD(AF_LOCAL,local) + __ADD(AF_INET,inet) + __ADD(AF_AX25,ax25) + __ADD(AF_IPX,ipx) + __ADD(AF_APPLETALK,appletalk) + __ADD(AF_NETROM,netrom) + __ADD(AF_BRIDGE,bridge) + __ADD(AF_ATMPVC,atmpvc) + __ADD(AF_X25,x25) + __ADD(AF_INET6,inet6) + __ADD(AF_ROSE,rose) + __ADD(AF_DECnet,decnet) + __ADD(AF_NETBEUI,netbeui) + __ADD(AF_SECURITY,security) + __ADD(AF_KEY,key) + __ADD(AF_NETLINK,netlink) + __ADD(AF_ROUTE,route) + __ADD(AF_PACKET,packet) + __ADD(AF_ASH,ash) + __ADD(AF_ECONET,econet) + __ADD(AF_ATMSVC,atmsvc) + __ADD(AF_SNA,sna) + __ADD(AF_IRDA,irda) + __ADD(AF_PPPOX,pppox) + __ADD(AF_WANPIPE,wanpipe) + __ADD(AF_LLC,llc) + __ADD(AF_BLUETOOTH,bluetooth) +}; + + +/** + * Convert address family to character string. + * @arg family Address family. + * @arg buf Destination buffer. + * @arg size Size of destination buffer. + * + * Converts an address family to a character string and stores it in the + * provided buffer. + * + * @return The destination buffer or the type encoded in hexidecimal form + * if no match was found. + */ +char *nl_af2str(char family, char *buf, size_t size) +{ + return __type2str(family, buf, size, afs, ARRAY_SIZE(afs)); +} + +/** + * Convert character string to address family. + * @arg name Name of address family. + * + * Converts the provided character string specifying an address family + * to the corresponding numeric value. + * + * @return Address family as number or \c AF_UNSPEC. + */ +char nl_str2af(const char *name) +{ + char fam = __str2type(name, afs, ARRAY_SIZE(afs)); + return fam >= 0 ? fam : AF_UNSPEC; +} + +/** @} */ + +/** @} */ diff --git a/lib/attr.c b/lib/attr.c new file mode 100644 index 0000000..dd47b6e --- /dev/null +++ b/lib/attr.c @@ -0,0 +1,762 @@ +/* + * lib/attr.c Netlink Attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include +#include +#include +#include +#include +#include +#include + +/** + * @ingroup nl + * @defgroup attr Attributes + * Netlink Attributes Construction/Parsing Interface + * @par 0) Introduction + * Netlink attributes are chained together following each other: + * @code + * <------- nla_total_size(payload) -------> + * <---- nla_attr_size(payload) -----> + * +----------+- - -+- - - - - - - - - +- - -+-------- - - + * | Header | Pad | Payload | Pad | Header + * +----------+- - -+- - - - - - - - - +- - -+-------- - - + * <- nla_len(nla) -> ^ + * nla_data(nla)----^ | + * nla_next(nla)-----------------------------' + * @endcode + * + * @par + * The attribute header and payload must be aligned properly: + * @code + * <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)--> + * +---------------------+- - -+- - - - - - - - - -+- - -+ + * | Header | Pad | Payload | Pad | + * | (struct nlattr) | ing | | ing | + * +---------------------+- - -+- - - - - - - - - -+- - -+ + * <-------------- nlattr->nla_len --------------> + * @endcode + * + * @par Nested TLVs: + * Nested TLVs are an array of TLVs nested into another TLV. This can be useful + * to allow subsystems to have their own formatting rules without the need to + * make the underlying layer be aware of it. It can also be useful to transfer + * arrays, lists and flattened trees. + * \code + * <-------------------- NLA_ALIGN(...) -------------------> + * +---------------+- - - - - - - - - - - - - - - - - -+- - -+ + * | |+---------+---------+- - -+-------+| | + * | TLV Header || TLV 1 | TLV 2 | | TLV n || Pad | + * | |+---------+---------+- - -+-------+| | + * +---------------+- - - - - - - - - - - - - - - - - -+- - -+ + * <--------- nla_data(nla) ---------> + * \endcode + * + * @par 1) Constructing a message with attributes + * @code + * int param1 = 10; + * char *param2 = "parameter text"; + * struct nlmsghdr hdr = { + * .nlmsg_type = MY_ACTION, + * }; + * struct nl_msg *m = nlmsg_build(&hdr); + * nla_put_u32(m, 1, param1); + * nla_put_string(m, 2, param2); + * + * nl_send_auto_complete(handle, nl_msg_get(m)); + * nlmsg_free(m); + * @endcode + * + * @par 2) Constructing nested attributes + * @code + * struct nl_msg * nested_config(void) + * { + * int a = 5, int b = 10; + * struct nl_msg *n = nlmsg_build(NULL); + * nla_put_u32(n, 10, a); + * nla_put_u32(n, 20, b); + * return n; + * } + * + * ... + * struct nl_msg *m = nlmsg_build(&hdr); + * struct nl_msg *nest = nested_config(); + * nla_put_nested(m, 1, nest); + * + * nl_send_auto_complete(handle, nl_msg_get(m)); + * nlmsg_free(nest); + * nlmsg_free(m); + * @endcode + * @{ + */ + +/** + * @name Size Calculations + * @{ + */ + +/** + * length of attribute not including padding + * @arg payload length of payload + */ +int nla_attr_size(int payload) +{ + return NLA_HDRLEN + payload; +} + +/** + * total length of attribute including padding + * @arg payload length of payload + */ +int nla_total_size(int payload) +{ + return NLA_ALIGN(nla_attr_size(payload)); +} + +/** + * length of padding at the tail of the attribute + * @arg payload length of payload + */ +int nla_padlen(int payload) +{ + return nla_total_size(payload) - nla_attr_size(payload); +} + +/** @} */ + +/** + * @name Payload Access + * @{ + */ + +/** + * head of payload + * @arg nla netlink attribute + */ +void *nla_data(const struct nlattr *nla) +{ + return (char *) nla + NLA_HDRLEN; +} + +/** + * length of payload + * @arg nla netlink attribute + */ +int nla_len(const struct nlattr *nla) +{ + return nla->nla_len - NLA_HDRLEN; +} + +/** @} */ + +/** + * @name Attribute Parsing + * @{ + */ + +/** + * check if the netlink attribute fits into the remaining bytes + * @arg nla netlink attribute + * @arg remaining number of bytes remaining in attribute stream + */ +int nla_ok(const struct nlattr *nla, int remaining) +{ + return remaining >= sizeof(*nla) && + nla->nla_len >= sizeof(*nla) && + nla->nla_len <= remaining; +} + +/** + * next netlink attribte in attribute stream + * @arg nla netlink attribute + * @arg remaining number of bytes remaining in attribute stream + * + * @return the next netlink attribute in the attribute stream and + * decrements remaining by the size of the current attribute. + */ +struct nlattr *nla_next(const struct nlattr *nla, int *remaining) +{ + int totlen = NLA_ALIGN(nla->nla_len); + + *remaining -= totlen; + return (struct nlattr *) ((char *) nla + totlen); +} + +static uint16_t nla_attr_minlen[NLA_TYPE_MAX+1] = { + [NLA_U8] = sizeof(uint8_t), + [NLA_U16] = sizeof(uint16_t), + [NLA_U32] = sizeof(uint32_t), + [NLA_U64] = sizeof(uint64_t), + [NLA_STRING] = 1, + [NLA_NESTED] = NLA_HDRLEN, +}; + +static int validate_nla(struct nlattr *nla, int maxtype, + struct nla_policy *policy) +{ + struct nla_policy *pt; + int minlen = 0; + + if (nla->nla_type <= 0 || nla->nla_type > maxtype) + return 0; + + pt = &policy[nla->nla_type]; + + if (pt->type > NLA_TYPE_MAX) + BUG(); + + if (pt->minlen) + minlen = pt->minlen; + else if (pt->type != NLA_UNSPEC) + minlen = nla_attr_minlen[pt->type]; + + if (pt->type == NLA_FLAG && nla_len(nla) > 0) + return -ERANGE; + + if (nla_len(nla) < minlen) + return -ERANGE; + + if (pt->maxlen && nla_len(nla) > pt->maxlen) + return -ERANGE; + + if (pt->type == NLA_STRING) { + char *data = nla_data(nla); + if (data[nla_len(nla) - 1] != '\0') + return -EINVAL; + } + + return 0; +} + + +/** + * Parse a stream of attributes into a tb buffer + * @arg tb destination array with maxtype+1 elements + * @arg maxtype maximum attribute type to be expected + * @arg head head of attribute stream + * @arg len length of attribute stream + * @arg policy validation policy + * + * Parses a stream of attributes and stores a pointer to each attribute in + * the tb array accessable via the attribute type. Attributes with a type + * exceeding maxtype will be silently ignored for backwards compatibility + * reasons. policy may be set to NULL if no validation is required. + * + * @return 0 on success or a negative error code. + */ +int nla_parse(struct nlattr *tb[], int maxtype, struct nlattr *head, int len, + struct nla_policy *policy) +{ + struct nlattr *nla; + int rem, err; + + memset(tb, 0, sizeof(struct nlattr *) * (maxtype + 1)); + + nla_for_each_attr(nla, head, len, rem) { + uint16_t type = nla->nla_type; + + if (type == 0) { + fprintf(stderr, "Illegal nla->nla_type == 0\n"); + continue; + } + + if (type <= maxtype) { + if (policy) { + err = validate_nla(nla, maxtype, policy); + if (err < 0) + goto errout; + } + + tb[type] = nla; + } + } + + if (rem > 0) + fprintf(stderr, "netlink: %d bytes leftover after parsing " + "attributes.\n", rem); + + err = 0; +errout: + return err; +} + + +/** + * parse nested attributes + * @arg tb destination array with maxtype+1 elements + * @arg maxtype maximum attribute type to be expected + * @arg nla attribute containing the nested attributes + * @arg policy validation policy + * + * @see nla_parse() + */ +int nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla, + struct nla_policy *policy) +{ + return nla_parse(tb, maxtype, nla_data(nla), nla_len(nla), policy); +} + +/** + * Validate a stream of attributes + * @arg head head of attribute stream + * @arg len length of attribute stream + * @arg maxtype maximum attribute type to be expected + * @arg policy validation policy + * + * Validates all attributes in the specified attribute stream + * against the specified policy. Attributes with a type exceeding + * maxtype will be ignored. See documenation of struct nla_policy + * for more details. + * + * @return 0 on success or a negative error code. + */ +int nla_validate(struct nlattr *head, int len, int maxtype, + struct nla_policy *policy) +{ + struct nlattr *nla; + int rem, err; + + nla_for_each_attr(nla, head, len, rem) { + err = validate_nla(nla, maxtype, policy); + if (err < 0) + goto errout; + } + + err = 0; +errout: + return err; +} + +/** + * Find a specific attribute in a stream of attributes + * @arg head head of attribute stream + * @arg len length of attribute stream + * @arg attrtype type of attribute to look for + * + * @return the first attribute in the stream matching the specified type. + */ +struct nlattr *nla_find(struct nlattr *head, int len, int attrtype) +{ + struct nlattr *nla; + int rem; + + nla_for_each_attr(nla, head, len, rem) + if (nla->nla_type == attrtype) + return nla; + + return NULL; +} + +/** @} */ + +/** + * @name Utilities + * @{ + */ + +/** + * Copy a netlink attribute into another memory area + * @arg dest where to copy to memcpy + * @arg src netlink attribute to copy from + * @arg count size of the destination area + * + * Note: The number of bytes copied is limited by the length of + * attribute's payload. memcpy + * + * @return the number of bytes copied. + */ +int nla_memcpy(void *dest, struct nlattr *src, int count) +{ + int minlen; + + if (!src) + return 0; + + minlen = min_t(int, count, nla_len(src)); + memcpy(dest, nla_data(src), minlen); + + return minlen; +} + +/** + * Copy string attribute payload into a sized buffer + * @arg dst where to copy the string to + * @arg nla attribute to copy the string from + * @arg dstsize size of destination buffer + * + * Copies at most dstsize - 1 bytes into the destination buffer. + * The result is always a valid NUL-terminated string. Unlike + * strlcpy the destination buffer is always padded out. + * + * @return the length of the source buffer. + */ +size_t nla_strlcpy(char *dst, const struct nlattr *nla, size_t dstsize) +{ + size_t srclen = nla_len(nla); + char *src = nla_data(nla); + + if (srclen > 0 && src[srclen - 1] == '\0') + srclen--; + + if (dstsize > 0) { + size_t len = (srclen >= dstsize) ? dstsize - 1 : srclen; + + memset(dst, 0, dstsize); + memcpy(dst, src, len); + } + + return srclen; +} + +/** + * Compare an attribute with sized memory area + * @arg nla netlink attribute + * @arg data memory area + * @arg size size of memory area + */ +int nla_memcmp(const struct nlattr *nla, const void *data, + size_t size) +{ + int d = nla_len(nla) - size; + + if (d == 0) + d = memcmp(nla_data(nla), data, size); + + return d; +} + +/** + * Compare a string attribute against a string + * @arg nla netlink string attribute + * @arg str another string + */ +int nla_strcmp(const struct nlattr *nla, const char *str) +{ + int len = strlen(str) + 1; + int d = nla_len(nla) - len; + + if (d == 0) + d = memcmp(nla_data(nla), str, len); + + return d; +} + +/** @} */ + +/** + * @name Attribute Construction + * @{ + */ + +/** + * reserve room for attribute on the skb + * @arg n netlink message + * @arg attrtype attribute type + * @arg attrlen length of attribute payload + * + * Adds a netlink attribute header to a netlink message and reserves + * room for the payload but does not copy it. + */ +struct nlattr *nla_reserve(struct nl_msg *n, int attrtype, int attrlen) +{ + struct nlattr *nla; + int tlen; + + tlen = NLMSG_ALIGN(n->nm_nlh->nlmsg_len) + nla_total_size(attrlen); + + n->nm_nlh = realloc(n->nm_nlh, tlen); + if (!n->nm_nlh) { + nl_errno(ENOMEM); + return NULL; + } + + nla = (struct nlattr *) nlmsg_tail(n->nm_nlh); + nla->nla_type = attrtype; + nla->nla_len = nla_attr_size(attrlen); + + memset((unsigned char *) nla + nla->nla_len, 0, nla_padlen(attrlen)); + n->nm_nlh->nlmsg_len = tlen; + + return nla; +} + +/** + * Add a netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg attrlen length of attribute payload + * @arg data head of attribute payload + * + * @return -1 if the tailroom of the skb is insufficient to store + * the attribute header and payload. + */ +int nla_put(struct nl_msg *n, int attrtype, int attrlen, const void *data) +{ + struct nlattr *nla; + + nla = nla_reserve(n, attrtype, attrlen); + if (!nla) + return nl_errno(ENOMEM); + + memcpy(nla_data(nla), data, attrlen); + + return 0; +} + +/** + * Add a nested netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg nested netlink attribute to nest + * + * @return -1 if the tailroom of the skb is insufficient to store + * the attribute header and payload. + */ +int nla_put_nested(struct nl_msg *n, int attrtype, struct nl_msg *nested) +{ + return nla_put(n, attrtype, nlmsg_len(nested->nm_nlh), + nlmsg_data(nested->nm_nlh)); +} + +/** + * Add a u16 netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg value numeric value + */ +int nla_put_u8(struct nl_msg *n, int attrtype, uint8_t value) +{ + return nla_put(n, attrtype, sizeof(uint8_t), &value); +} + +/** + * Add a u16 netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg value numeric value + */ +int nla_put_u16(struct nl_msg *n, int attrtype, uint16_t value) +{ + return nla_put(n, attrtype, sizeof(uint16_t), &value); +} + +/** + * Add a u32 netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg value numeric value + */ +int nla_put_u32(struct nl_msg *n, int attrtype, uint32_t value) +{ + return nla_put(n, attrtype, sizeof(uint32_t), &value); +} + +/** + * Add a u64 netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg value numeric value + */ +int nla_put_u64(struct nl_msg *n, int attrtype, uint64_t value) +{ + return nla_put(n, attrtype, sizeof(uint64_t), &value); +} + +/** + * Add a string netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg str NUL terminated string + */ +int nla_put_string(struct nl_msg *n, int attrtype, const char *str) +{ + return nla_put(n, attrtype, strlen(str) + 1, str); +} + +/** + * Add a flag netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + */ +int nla_put_flag(struct nl_msg *n, int attrtype) +{ + return nla_put(n, attrtype, 0, NULL); +} + +/** + * Add a msecs netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg msecs number of msecs + */ +int nla_put_msecs(struct nl_msg *n, int attrtype, unsigned long msecs) +{ + return nla_put_u64(n, attrtype, msecs); +} + +/** + * Add an abstract data netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg data abstract data + */ +int nla_put_data(struct nl_msg *n, int attrtype, struct nl_data *data) +{ + return nla_put(n, attrtype, nl_data_get_size(data), + nl_data_get(data)); +} + +/** + * Add an abstract address netlink attribute to a netlink message + * @arg n netlink message + * @arg attrtype attribute type + * @arg addr abstract address + */ +int nla_put_addr(struct nl_msg *n, int attrtype, struct nl_addr *addr) +{ + return nla_put(n, attrtype, nl_addr_get_len(addr), + nl_addr_get_binary_addr(addr)); +} + +/** @} */ + +/** + * @name Attribute Nesting + * @{ + */ + +/** + * Start a new level of nested attributes + * @arg n netlink message + * @arg attrtype attribute type of container + * + * @return the container attribute + */ +struct nlattr *nla_nest_start(struct nl_msg *n, int attrtype) +{ + struct nlattr *start = (struct nlattr *) nlmsg_tail(n->nm_nlh); + + if (nla_put(n, attrtype, 0, NULL) < 0) + return NULL; + + return start; +} + +/** + * Finalize nesting of attributes + * @arg n netlink message + * @arg start container attribute + * + * Corrects the container attribute header to include the all + * appeneded attributes. + * + * @return the total data length of the skb. + */ +int nla_nest_end(struct nl_msg *n, struct nlattr *start) +{ + start->nla_len = (unsigned char *) nlmsg_tail(n->nm_nlh) - + (unsigned char *) start; + return 0; +} + +/** @} */ + +/** + * @name Attribute Reading + * @{ + */ + +/** + * Return payload of u32 attribute + * @arg nla u32 netlink attribute + */ +uint32_t nla_get_u32(struct nlattr *nla) +{ + return *(uint32_t *) nla_data(nla); +} + +/** + * Return payload of u16 attribute + * @arg nla u16 netlink attribute + */ +uint16_t nla_get_u16(struct nlattr *nla) +{ + return *(uint16_t *) nla_data(nla); +} + +/** + * Return payload of u8 attribute + * @arg nla u8 netlink attribute + */ +uint8_t nla_get_u8(struct nlattr *nla) +{ + return *(uint8_t *) nla_data(nla); +} + +/** + * Return payload of u64 attribute + * @arg nla u64 netlink attribute + */ +uint64_t nla_get_u64(struct nlattr *nla) +{ + uint64_t tmp; + + nla_memcpy(&tmp, nla, sizeof(tmp)); + + return tmp; +} + +/** + * Return payload of flag attribute + * @arg nla flag netlink attribute + */ +int nla_get_flag(struct nlattr *nla) +{ + return !!nla; +} + +/** + * Return payload of msecs attribute + * @arg nla msecs netlink attribute + * + * @return the number of milliseconds. + */ +unsigned long nla_get_msecs(struct nlattr *nla) +{ + return nla_get_u64(nla); +} + +/** + * Return payload of address attribute + * @arg nla address netlink attribute + * @arg family address family + * + * @return Newly allocated address handle or NULL + */ +struct nl_addr *nla_get_addr(struct nlattr *nla, int family) +{ + return nl_addr_build(family, nla_data(nla), nla_len(nla)); +} + +/** + * Return payload of abstract data attribute + * @arg nla abstract data netlink attribute + * + * @return Newly allocated abstract data handle or NULL + */ +struct nl_data *nla_get_data(struct nlattr *nla) +{ + return nl_data_alloc(nla_data(nla), nla_len(nla)); +} + +/** @} */ + +/** @} */ diff --git a/lib/cache.c b/lib/cache.c new file mode 100644 index 0000000..9b88c7c --- /dev/null +++ b/lib/cache.c @@ -0,0 +1,551 @@ +/* + * lib/cache.c Caching Module + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup utils + * @defgroup cache Caching + * + * @code + * Cache Management | | Type Specific Cache Operations + * + * | | +----------------+ +------------+ + * | request update | | msg_parser | + * | | +----------------+ +------------+ + * +- - - - -^- - - - - - - -^- -|- - - - + * nl_cache_update: | | | | + * 1) --------- co_request_update ------+ | | + * | | | + * 2) destroy old cache +----------- pp_cb ---------|---+ + * | | | + * 3) ---------- nl_recvmsgs ----------+ +- cb_valid -+ + * +--------------+ | | | | + * | nl_cache_add |<-----+ + - - -v- -|- - - - - - - - - - - + * +--------------+ | | +-------------+ + * | nl_recvmsgs | + * | | +-----|-^-----+ + * +---v-|---+ + * | | | nl_recv | + * +---------+ + * | | Core Netlink + * @endcode + * + * @{ + */ + +#include +#include +#include +#include +#include + +static inline char *nl_cache_name(struct nl_cache *cache) +{ + return cache->c_ops ? cache->c_ops->co_name : "unknown"; +} + +/** + * @name Access Functions + * @{ + */ + +/** + * Return the number of items in the cache + * @arg cache cache handle + */ +int nl_cache_nitems(struct nl_cache *cache) +{ + return cache->c_nitems; +} + +/** + * Return the number of items matching a filter in the cache + * @arg cache Cache object. + * @arg filter Filter object. + */ +int nl_cache_nitems_filter(struct nl_cache *cache, struct nl_object *filter) +{ + struct nl_cache_ops *ops = cache->c_ops; + struct nl_object *obj; + int nitems = 0; + + nl_list_for_each_entry(obj, &cache->c_items, ce_list) { + if (filter && ops->co_filter && !ops->co_filter(obj, filter)) + continue; + + nitems++; + } + + return nitems; +} + +/** + * Returns \b true if the cache is empty. + * @arg cache Cache to check + * @return \a true if the cache is empty, otherwise \b false is returned. + */ +int nl_cache_is_empty(struct nl_cache *cache) +{ + return nl_list_empty(&cache->c_items); +} + +/** + * Return the operations set of the cache + * @arg cache cache handle + */ +struct nl_cache_ops *nl_cache_get_ops(struct nl_cache *cache) +{ + return cache->c_ops; +} + +/** + * Return the first element in the cache + * @arg cache cache handle + */ +struct nl_object *nl_cache_get_first(struct nl_cache *cache) +{ + if (nl_list_empty(&cache->c_items)) + return NULL; + + return nl_list_entry(cache->c_items.next, + struct nl_object, ce_list); +} + +/** + * Return the last element in the cache + * @arg cache cache handle + */ +struct nl_object *nl_cache_get_last(struct nl_cache *cache) +{ + if (nl_list_empty(&cache->c_items)) + return NULL; + + return nl_list_entry(cache->c_items.prev, + struct nl_object, ce_list); +} + +/** + * Return the next element in the cache + * @arg obj current object + */ +struct nl_object *nl_cache_get_next(struct nl_object *obj) +{ + if (nl_list_at_tail(obj, &obj->ce_cache->c_items, ce_list)) + return NULL; + else + return nl_list_entry(obj->ce_list.next, + struct nl_object, ce_list); +} + +/** + * Return the previous element in the cache + * @arg obj current object + */ +struct nl_object *nl_cache_get_prev(struct nl_object *obj) +{ + if (nl_list_at_head(obj, &obj->ce_cache->c_items, ce_list)) + return NULL; + else + return nl_list_entry(obj->ce_list.prev, + struct nl_object, ce_list); +} + +/** @} */ + +/** + * @name Cache Creation/Deletion + * @{ + */ + +/** + * Allocate an empty cache of no certain type + * + * @return A newly allocated and initialized cache. + */ +struct nl_cache *nl_cache_alloc(void) +{ + struct nl_cache *cache; + + cache = calloc(1, sizeof(*cache)); + if (!cache) { + nl_errno(ENOMEM); + return NULL; + } + + nl_init_list_head(&cache->c_items); + NL_DBG(2, "Allocated cache %p <%s>.\n", cache, nl_cache_name(cache)); + + return cache; +} + +/** + * Allocate an empty cache based on cache operations + * @arg ops cache operations to base the cache on + * @return A newly allocated and initialized cache. + */ +struct nl_cache *nl_cache_alloc_from_ops(struct nl_cache_ops *ops) +{ + struct nl_cache *new; + + new = nl_cache_alloc(); + if (!new) + return NULL; + + new->c_ops = ops; + + return new; +} + +/** + * Allocate an empty cache based on type name + * @arg kind Name of cache type + * @return A newly allocated and initialized cache. + */ +struct nl_cache *nl_cache_alloc_name(const char *kind) +{ + struct nl_cache_ops *ops; + + ops = nl_cache_mngt_lookup(kind); + if (!ops) { + nl_error(ENOENT, "Unable to lookup cache \"%s\"", kind); + return NULL; + } + + return nl_cache_alloc_from_ops(ops); +} + +/** + * Clear a cache. + * @arg cache cache to clear + * + * Removes all elements of a cache. + */ +void nl_cache_clear(struct nl_cache *cache) +{ + struct nl_object *obj, *tmp; + + NL_DBG(1, "Clearing cache %p <%s>...\n", cache, nl_cache_name(cache)); + + nl_list_for_each_entry_safe(obj, tmp, &cache->c_items, ce_list) + nl_cache_delete(cache, obj); +} + +/** + * Free a cache. + * @arg cache Cache to free. + * + * Removes all elements of a cache and frees all memory. + * + * @note Use this function if you are working with allocated caches. + */ +void nl_cache_free(struct nl_cache *cache) +{ + nl_cache_clear(cache); + NL_DBG(1, "Freeing cache %p <%s>...\n", cache, nl_cache_name(cache)); + free(cache); +} + +/** @} */ + +/** + * @name Cache Modifications + * @{ + */ + +/** + * Add an element to the cache. + * @arg cache cache to add a element to + * @arg obj Common obj to be added to the cache + * + * Adds the object \c obj to the tail of the cache \c cache and. The + * cache is enlarged as needed. + * + * @return 0 or a negative error code. + */ +int nl_cache_add(struct nl_cache *cache, struct nl_object *obj) +{ + struct nl_object *new; + + if (nl_object_shared(obj)) { + new = nl_object_clone(obj); + if (!new) + return nl_errno(ENOMEM); + + nl_object_put(obj); + } else + new = obj; + + new->ce_cache = cache; + + nl_list_add_tail(&new->ce_list, &cache->c_items); + cache->c_nitems++; + + NL_DBG(1, "Added %p to cache %p <%s>.\n", + new, cache, nl_cache_name(cache)); + + return 0; +} + +static int subsys_parse_cb(struct nl_object *c, struct nl_parser_param *p) +{ + return nl_cache_add((struct nl_cache *) p->pp_arg, c); +} + +/** @cond SKIP */ +int nl_cache_parse(struct nl_cache_ops *ops, struct sockaddr_nl *who, + struct nlmsghdr *nlh, struct nl_parser_param *params) +{ + int i, len, err, hdrsize; + + hdrsize = ops->co_hdrsize; + len = nlh->nlmsg_len - nlmsg_msg_size(hdrsize); + if (len < 0) { + err = nl_error(EINVAL, "netlink message too short to " + "of kind %s", ops->co_name); + goto errout; + } + + for (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++) + if (ops->co_msgtypes[i].mt_id == nlh->nlmsg_type) + return ops->co_msg_parser(who, nlh, params); + + err = nl_error(EINVAL, "Unsupported netlink message type %d", + nlh->nlmsg_type); +errout: + return err; +} +/** @endcond */ + +/** + * Parse a netlink message and add it to the cache. + * @arg cache cache to add element to + * @arg msg netlink message + * + * Parses a netlink message by calling the cache specific message parser + * and adds the new element to the cache. + * + * @return 0 or a negative error code. + */ +int nl_cache_parse_and_add(struct nl_cache *cache, struct nl_msg *msg) +{ + struct nl_parser_param p = { + .pp_cb = subsys_parse_cb, + .pp_arg = cache, + }; + + return nl_cache_parse(cache->c_ops, NULL, nlmsg_hdr(msg), &p); +} + +/** + * Delete an element from a cache. + * @arg cache cache to delete the element from + * @arg obj Object to delete + * + * Deletes the object \c obj from the cache \c cache. + */ +void nl_cache_delete(struct nl_cache *cache, struct nl_object *obj) +{ + if (obj->ce_cache != cache) + BUG(); + + nl_list_del(&obj->ce_list); + obj->ce_cache = NULL; + nl_object_put(obj); + cache->c_nitems--; + + NL_DBG(1, "Deleted %p from cache %p <%s>.\n", + obj, cache, nl_cache_name(cache)); +} + +/** @cond SKIP */ +struct update_xdata { + struct nl_cache_ops *ops; + struct nl_parser_param *params; +}; +/** @endcond */ + +static int update_msg_parser(struct nl_msg *msg, void *arg) +{ + struct update_xdata *x = arg; + + return nl_cache_parse(x->ops, &msg->nm_src, msg->nm_nlh, x->params); +} + +/** + * Pickup a netlink dump response and put it into a cache. + * @arg handle Netlink handle. + * @arg cache Cache to put items into. + * + * Waits for netlink messages to arrive, parses them and puts them into + * the specified cache. + * + * @return 0 on success or a negative error code. + */ +int nl_cache_pickup(struct nl_handle *handle, struct nl_cache *cache) +{ + int err; + struct nl_cache_ops *ops = cache->c_ops; + struct nl_cb *cb; + struct nl_parser_param p = { + .pp_cb = subsys_parse_cb, + .pp_arg = cache, + }; + struct update_xdata x = { + .ops = ops, + .params = &p, + }; + + NL_DBG(1, "Filling cache %p <%s>...\n", cache, nl_cache_name(cache)); + + cb = nl_cb_clone(nl_handle_get_cb(handle)); + nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, update_msg_parser, &x); + + err = nl_recvmsgs(handle, cb); + if (err < 0) + NL_DBG(2, "While picking up for %p <%s>, recvmsgs() returned " \ + "%d: %s", cache, nl_cache_name(cache), + err, nl_geterror()); + + nl_cb_destroy(cb); + + return err; +} + +/** + * Update (synchronize) a local cache with the kernel. + * @arg handle netlink handle + * @arg cache cache to update + * + * Updates the local cache \c cache with the state in the kernel. During + * this process the cache gets emptied and refilled with the new content + * received from the kernel. + * + * @return 0 or a negative error code. + */ +int nl_cache_update(struct nl_handle *handle, struct nl_cache *cache) +{ + int err; + struct nl_cache_ops *ops = cache->c_ops; + + err = ops->co_request_update(cache, handle); + if (err < 0) + return err; + + NL_DBG(2, "Upading cache %p <%s>, request sent, waiting for dump...\n", + cache, nl_cache_name(cache)); + nl_cache_clear(cache); + + return nl_cache_pickup(handle, cache); +} + +/** @} */ + +/** + * @name Dumping + * @{ + */ + +/** + * Dump all elements of a cache. + * @arg cache cache to dump + * @arg params dumping parameters + * + * Dumps all elements of the \a cache to the file descriptor \a fd. + */ +void nl_cache_dump(struct nl_cache *cache, struct nl_dump_params *params) +{ + NL_DBG(1, "Dumping cache %p <%s>\n", cache, nl_cache_name(cache)); + nl_cache_dump_filter(cache, params, NULL); +} + +/** + * Dump all elements of a cache (filtered). + * @arg cache cache to dump + * @arg params dumping parameters (optional) + * @arg filter filter object + * + * Dumps all elements of the \a cache to the file descriptor \a fd + * given they match the given filter \a filter. + */ +void nl_cache_dump_filter(struct nl_cache *cache, + struct nl_dump_params *params, + struct nl_object *filter) +{ + int type = params ? params->dp_type : NL_DUMP_FULL; + struct nl_cache_ops *ops = cache->c_ops; + struct nl_object *obj; + + if (type > NL_DUMP_MAX || type < 0) + BUG(); + + if (!ops->co_dump[type]) + return; + + nl_list_for_each_entry(obj, &cache->c_items, ce_list) { + if (filter && obj->ce_ops != filter->ce_ops) + continue; + + if (filter && ops->co_filter && !ops->co_filter(obj, filter)) + continue; + + dump_from_ops(obj, params); + } +} + +/** @} */ + +/** + * @name Iterators + * @{ + */ + +/** + * Call a callback on each element of the cache. + * @arg cache cache to iterate on + * @arg cb callback function + * @arg arg argument passed to callback function + * + * Calls a callback function \a cb on each element of the \a cache. + * The argument \a arg is passed on the callback function. + */ +void nl_cache_foreach(struct nl_cache *cache, + void (*cb)(struct nl_object *, void *), void *arg) +{ + nl_cache_foreach_filter(cache, NULL, cb, arg); +} + +/** + * Call a callback on each element of the cache (filtered). + * @arg cache cache to iterate on + * @arg filter filter object + * @arg cb callback function + * @arg arg argument passed to callback function + * + * Calls a callback function \a cb on each element of the \a cache + * that matches the \a filter. The argument \a arg is passed on + * to the callback function. + */ +void nl_cache_foreach_filter(struct nl_cache *cache, struct nl_object *filter, + void (*cb)(struct nl_object *, void *), void *arg) +{ + struct nl_object *obj, *tmp; + struct nl_cache_ops *ops = cache->c_ops; + + nl_list_for_each_entry_safe(obj, tmp, &cache->c_items, ce_list) { + if (filter && ops->co_filter && !ops->co_filter(obj, filter)) + continue; + + cb(obj, arg); + } +} + +/** @} */ + +/** @} */ diff --git a/lib/cache_mngt.c b/lib/cache_mngt.c new file mode 100644 index 0000000..98a26c1 --- /dev/null +++ b/lib/cache_mngt.c @@ -0,0 +1,254 @@ +/* + * lib/cache_mngt.c Cache Management + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup utils + * @defgroup cache_mngt Cache Management + * @{ + */ + +#include +#include +#include +#include + +/** + * @name Access Functions + * @{ + */ + +/** + * Return the cache type of the cache operations + * @arg ops cache operations + */ +char *nl_cache_ops_get_name(struct nl_cache_ops *ops) +{ + return ops->co_name; +} + +/** @} */ + +/** + * @name Message Type Association + * @{ + */ + +static struct nl_cache_ops *cache_ops; + +/** + * Associate a message type to a set of cache operations + * @arg protocol netlink protocol + * @arg message_type netlink message type + * + * Associates the specified netlink message type with + * a registered set of cache operations. + * + * @return The cache operations or NULL if no association + * could be made. + */ +struct nl_cache_ops *nl_cache_mngt_associate(int protocol, int message_type) +{ + int i; + struct nl_cache_ops *ops; + + for (ops = cache_ops; ops; ops = ops->co_next) + for (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++) + if (ops->co_msgtypes[i].mt_id == message_type && + ops->co_protocol == protocol) + return ops; + + return NULL; +} + +/** + * Convert message type to character string. + * @arg ops Cache operations. + * @arg msgtype Message type. + * @arg buf Destination buffer. + * @arg len Size of destination buffer. + * + * Converts a message type to a character string and stores it in the + * provided buffer. + * + * @return The destination buffer or the message type encoded in + * hexidecimal form if no match was found. + */ +char *nl_cache_mngt_type2name(struct nl_cache_ops *ops, int msgtype, + char *buf, size_t len) +{ + int i; + + for (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++) { + if (ops->co_msgtypes[i].mt_id == msgtype) { + snprintf(buf, len, "%s::%s", + ops->co_name, + ops->co_msgtypes[i].mt_name); + return buf; + } + } + + snprintf(buf, len, "%s->0x%x()", ops->co_name, msgtype); + return buf; +} + +/** @} */ + +/** + * @name Cache Type Management + * @{ + */ + +/** + * Lookup the set cache operations of a certain cache type + * @arg name name of the cache type + * + * @return The cache operations or NULL if no operations + * have been registered under the specified name. + */ +struct nl_cache_ops *nl_cache_mngt_lookup(const char *name) +{ + struct nl_cache_ops *ops; + + for (ops = cache_ops; ops; ops = ops->co_next) + if (!strcmp(ops->co_name, name)) + return ops; + + return NULL; +} + +/** + * Register a set of cache operations + * @arg ops cache operations + * + * Called by users of caches to announce the avaibility of + * a certain cache type. + * + * @return 0 on success or a negative error code. + */ +int nl_cache_mngt_register(struct nl_cache_ops *ops) +{ + if (!ops->co_name) + return nl_error(EINVAL, "No cache name specified"); + + if (nl_cache_mngt_lookup(ops->co_name)) + return nl_error(EEXIST, "Cache operations already exist"); + + ops->co_next = cache_ops; + cache_ops = ops; + + NL_DBG(1, "Registered cache operations %s\n", ops->co_name); + + return 0; +} + +/** + * Unregister a set of cache operations + * @arg ops cache operations + * + * Called by users of caches to announce a set of + * cache operations is no longer available. The + * specified cache operations must have been registered + * previously using nl_cache_mngt_register() + * + * @return 0 on success or a negative error code + */ +int nl_cache_mngt_unregister(struct nl_cache_ops *ops) +{ + struct nl_cache_ops *t, **tp; + + for (tp = &cache_ops; (t=*tp) != NULL; tp = &t->co_next) + if (t == ops) + break; + + if (!t) + return nl_error(ENOENT, "No such cache operations"); + + NL_DBG(1, "Unregistered cache operations %s\n", ops->co_name); + + *tp = t->co_next; + return 0; +} + +/** @} */ + +/** + * @name Global Cache Provisioning/Requiring + * @{ + */ + +/** + * Provide a cache for global use + * @arg cache cache to provide + * + * Offers the specified cache to be used by other modules. + * Only one cache per type may be shared at a time, + * a previsouly provided caches will be overwritten. + */ +void nl_cache_mngt_provide(struct nl_cache *cache) +{ + struct nl_cache_ops *ops; + + ops = nl_cache_mngt_lookup(cache->c_ops->co_name); + if (!ops) + BUG(); + else + ops->co_major_cache = cache; +} + +/** + * Unprovide a cache for global use + * @arg cache cache to unprovide + * + * Cancels the offer to use a cache globally. The + * cache will no longer be returned via lookups but + * may still be in use. + */ +void nl_cache_mngt_unprovide(struct nl_cache *cache) +{ + struct nl_cache_ops *ops; + + ops = nl_cache_mngt_lookup(cache->c_ops->co_name); + if (!ops) + BUG(); + else if (ops->co_major_cache == cache) + ops->co_major_cache = NULL; +} + +/** + * Demand the use of a global cache + * @arg name name of the required cache type + * + * Trys to find a cache of the specified type for global + * use. + * + * @return A cache provided by another subsystem of the + * specified type marked to be available. + */ +struct nl_cache *nl_cache_mngt_require(const char *name) +{ + struct nl_cache_ops *ops; + + ops = nl_cache_mngt_lookup(name); + if (!ops || !ops->co_major_cache) { + fprintf(stderr, "Application BUG: Your application must " + "call nl_cache_mngt_provide() and\nprovide a valid " + "%s cache to be used for internal lookups.\nSee the " + " API documentation for more details.\n", name); + + return NULL; + } + + return ops->co_major_cache; +} + +/** @} */ + +/** @} */ diff --git a/lib/data.c b/lib/data.c new file mode 100644 index 0000000..9175550 --- /dev/null +++ b/lib/data.c @@ -0,0 +1,162 @@ +/* + * lib/data.c Abstract Data + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup utils + * @defgroup data Abstract Data + * @{ + */ + +#include +#include +#include +#include + +/** + * @name General + * @{ + */ + +/** + * Allocate a new abstract data object. + * @arg buf Data buffer containing the actual data. + * @arg size Size of data buffer. + * + * Allocates a new abstract data and copies the specified data + * buffer into the new handle. + * + * @return Newly allocated data handle or NULL + */ +struct nl_data *nl_data_alloc(void *buf, size_t size) +{ + struct nl_data *data; + + data = calloc(1, sizeof(*data)); + if (!data) + goto errout; + + data->d_data = calloc(1, size); + if (!data->d_data) { + free(data); + goto errout; + } + + data->d_size = size; + + if (buf) + memcpy(data->d_data, buf, size); + + return data; +errout: + nl_errno(ENOMEM); + return NULL; +} + +/** + * Append data to an abstract data object. + * @arg data Abstract data object. + * @arg buf Data buffer containing the data to be appended. + * @arg size Size of data to be apppended. + * + * Reallocates an abstract data and copies the specified data + * buffer into the new handle. + * + * @return 0 on success or a negative error code + */ +int nl_data_append(struct nl_data *data, void *buf, size_t size) +{ + if (size < 0) + BUG(); + + if (size > 0) { + data->d_data = realloc(data->d_data, data->d_size + size); + if (!data->d_data) + return nl_errno(ENOMEM); + + if (buf) + memcpy(data->d_data + data->d_size, buf, size); + else + memset(data->d_data + data->d_size, 0, size); + + data->d_size += size; + } + + return 0; +} + + +/** + * Free an abstract data object. + * @arg data Abstract data object. + */ +void nl_data_free(struct nl_data *data) +{ + if (data) + free(data->d_data); + + free(data); +} + +/** @} */ + +/** + * @name Attribute Access + * @{ + */ + +/** + * Get data buffer of abstract data object. + * @arg data Abstract data object. + * @return Data buffer or NULL if empty. + */ +void *nl_data_get(struct nl_data *data) +{ + return data->d_size > 0 ? data->d_data : NULL; +} + +/** + * Get size of data buffer of abstract data object. + * @arg data Abstract data object. + * @return Size of data buffer. + */ +size_t nl_data_get_size(struct nl_data *data) +{ + return data->d_size; +} + +/** @} */ + +/** + * @name Misc + * @{ + */ + +/** + * Compare two abstract data objects. + * @arg a Abstract data object. + * @arg b Another abstract data object. + * @return An integer less than, equal to, or greater than zero if + * a is found, respectively, to be less than, to match, or + * be greater than b. + */ +int nl_data_cmp(struct nl_data *a, struct nl_data *b) +{ + void *a_ = nl_data_get(a); + void *b_ = nl_data_get(b); + + if (a_ && b_) + return memcmp(a_, b_, nl_data_get_size(a)); + else + return -1; +} + +/** @} */ +/** @} */ diff --git a/lib/defs.h b/lib/defs.h new file mode 100644 index 0000000..f079bdf --- /dev/null +++ b/lib/defs.h @@ -0,0 +1,29 @@ +/* lib/defs.h. Generated by configure. */ +/* lib/defs.h.in. Generated from configure.in by autoheader. */ + +/* Define to the address where bug reports for this package should be sent. */ +#define PACKAGE_BUGREPORT "tgraf@suug.ch" + +/* Define to the full name of this package. */ +#define PACKAGE_NAME "libnl" + +/* Define to the full name and version of this package. */ +#define PACKAGE_STRING "libnl 1.0-pre6" + +/* Define to the one symbol short name of this package. */ +#define PACKAGE_TARNAME "libnl" + +/* Define to the version of this package. */ +#define PACKAGE_VERSION "1.0-pre6" + +/* verbose errors */ +/* #undef VERBOSE_ERRORS */ + +/* Define to empty if `const' does not conform to ANSI C. */ +/* #undef const */ + +/* Define to `__inline__' or `__inline' if that's what the C compiler + calls it, or to nothing if 'inline' is not supported under any name. */ +#ifndef __cplusplus +/* #undef inline */ +#endif diff --git a/lib/defs.h.in b/lib/defs.h.in new file mode 100644 index 0000000..ef86caa --- /dev/null +++ b/lib/defs.h.in @@ -0,0 +1,28 @@ +/* lib/defs.h.in. Generated from configure.in by autoheader. */ + +/* Define to the address where bug reports for this package should be sent. */ +#undef PACKAGE_BUGREPORT + +/* Define to the full name of this package. */ +#undef PACKAGE_NAME + +/* Define to the full name and version of this package. */ +#undef PACKAGE_STRING + +/* Define to the one symbol short name of this package. */ +#undef PACKAGE_TARNAME + +/* Define to the version of this package. */ +#undef PACKAGE_VERSION + +/* verbose errors */ +#undef VERBOSE_ERRORS + +/* Define to empty if `const' does not conform to ANSI C. */ +#undef const + +/* Define to `__inline__' or `__inline' if that's what the C compiler + calls it, or to nothing if 'inline' is not supported under any name. */ +#ifndef __cplusplus +#undef inline +#endif diff --git a/lib/fib_lookup/lookup.c b/lib/fib_lookup/lookup.c new file mode 100644 index 0000000..6306fb4 --- /dev/null +++ b/lib/fib_lookup/lookup.c @@ -0,0 +1,355 @@ +/* + * lib/fib_lookup/lookup.c FIB Lookup + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @defgroup fib_lookup FIB Lookup + * @brief + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +static struct nl_cache_ops fib_lookup_ops; + +/* not exported so far */ +struct fib_result_nl { + uint32_t fl_addr; /* To be looked up*/ + uint32_t fl_fwmark; + unsigned char fl_tos; + unsigned char fl_scope; + unsigned char tb_id_in; + + unsigned char tb_id; /* Results */ + unsigned char prefixlen; + unsigned char nh_sel; + unsigned char type; + unsigned char scope; + int err; +}; +/** @endcond */ + +static void result_free_data(struct nl_object *obj) +{ + struct flnl_result *res = nl_object_priv(obj); + + if (res && res->fr_req) + flnl_request_put(res->fr_req); +} + +static int result_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *n, + void *arg) +{ + struct flnl_result *res; + struct fib_result_nl *fr; + struct nl_parser_param *pp = arg; + struct nl_addr *addr; + int err = -EINVAL; + + res = flnl_result_alloc(); + if (!res) + goto errout; + + res->ce_msgtype = n->nlmsg_type; + + res->fr_req = flnl_request_alloc(); + if (!res->fr_req) + goto errout; + + fr = nlmsg_data(n); + addr = nl_addr_build(AF_INET, &fr->fl_addr, 4); + if (!addr) + goto errout; + err = flnl_request_set_addr(res->fr_req, addr); + nl_addr_put(addr); + if (err < 0) + goto errout; + + flnl_request_set_fwmark(res->fr_req, fr->fl_fwmark); + flnl_request_set_tos(res->fr_req, fr->fl_tos); + flnl_request_set_scope(res->fr_req, fr->fl_scope); + flnl_request_set_table(res->fr_req, fr->tb_id_in); + + res->fr_table_id = fr->tb_id; + res->fr_prefixlen = fr->prefixlen; + res->fr_nh_sel = fr->nh_sel; + res->fr_type = fr->type; + res->fr_scope = fr->scope; + res->fr_error = fr->err; + + err = pp->pp_cb((struct nl_object *) res, pp); + if (err < 0) + goto errout; + + /* REAL HACK, fib_lookup doesn't support ACK nor does it + * send a DONE message, enforce end of message stream + * after just the first message */ + return NL_EXIT; + +errout: + flnl_result_put(res); + return err; +} + +static int result_dump_brief(struct nl_object *obj, struct nl_dump_params *p) +{ + struct flnl_result *res = (struct flnl_result *) obj; + char buf[128]; + int line = 1; + + dp_dump(p, "table %s prefixlen %u next-hop-selector %u\n", + rtnl_route_table2str(res->fr_table_id, buf, sizeof(buf)), + res->fr_prefixlen, res->fr_nh_sel); + dp_dump_line(p, line++, "type %s ", + nl_rtntype2str(res->fr_type, buf, sizeof(buf))); + dp_dump(p, "scope %s error %s (%d)\n", + rtnl_scope2str(res->fr_scope, buf, sizeof(buf)), + strerror(-res->fr_error), res->fr_error); + + return line; +} + +static int result_dump_full(struct nl_object *obj, struct nl_dump_params *p) +{ + return result_dump_brief(obj, p); +} + +static int result_filter(struct nl_object *obj, struct nl_object *filter) +{ + struct flnl_result *o = (struct flnl_result *) obj; + struct flnl_result *f = (struct flnl_result *) filter; + + if (o->fr_req && f->fr_req) + return flnl_request_cmp(o->fr_req, f->fr_req); + + return 1; +} + +/** + * @name FIB Result Allocation/Freeage + * @{ + */ + +/** + * Allocate and initialize new lookup result object. + * @note Free the memory after usage using flnl_result_put() or + * flnl_result_free(). + * @return Newly allocated lookup result object or NULL if an error occured. + */ +struct flnl_result *flnl_result_alloc(void) +{ + return (struct flnl_result *) nl_object_alloc_from_ops(&fib_lookup_ops); +} + +/** + * Allocate lookup result cache. + * + * Allocates a new lookup result cache and initializes it properly. + * + * @note Free the memory after usage using nl_cache_destroy_and_free(). + * @return Newly allocated cache or NULL if an error occured. + */ +struct nl_cache *flnl_result_alloc_cache(void) +{ + return nl_cache_alloc_from_ops(&fib_lookup_ops); +} + +/** + * Give back reference on lookup result object. + * @arg res lookup result object to be given back. + * + * Decrements the reference counter and frees the object if the + * last reference has been released. + */ +void flnl_result_put(struct flnl_result *res) +{ + nl_object_put((struct nl_object *) res); +} + +/** + * Free lookup result object. + * @arg res lookup result object to be freed. + * + * @note Always use flnl_result_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void flnl_result_free(struct flnl_result *res) +{ + nl_object_free((struct nl_object *) res); +} + +/** @} */ + +/** + * @name Lookup + * @{ + */ + +/** + * Builds a netlink request message to do a lookup + * @arg req Requested match. + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a change of link attributes. + * The netlink message header isn't fully equipped with all relevant + * fields and must be sent out via nl_send_auto_complete() or + * supplemented as needed. + * \a old must point to a link currently configured in the kernel + * and \a tmpl must contain the attributes to be changed set via + * \c rtnl_link_set_* functions. + * + * @return New netlink message + * @note Not all attributes can be changed, see + * \ref link_changeable "Changeable Attributes" for more details. + */ +struct nl_msg *flnl_lookup_build_request(struct flnl_request *req, int flags) +{ + struct nl_msg *msg; + struct nl_addr *addr; + uint64_t fwmark; + int tos, scope, table; + struct fib_result_nl fr = {0}; + + fwmark = flnl_request_get_fwmark(req); + tos = flnl_request_get_tos(req); + scope = flnl_request_get_scope(req); + table = flnl_request_get_table(req); + + fr.fl_fwmark = fwmark != UINT_LEAST64_MAX ? fwmark : 0; + fr.fl_tos = tos >= 0 ? tos : 0; + fr.fl_scope = scope >= 0 ? scope : RT_SCOPE_UNIVERSE; + fr.tb_id_in = table >= 0 ? table : RT_TABLE_UNSPEC; + + addr = flnl_request_get_addr(req); + if (!addr) { + nl_error(EINVAL, "Request must specify the address"); + return NULL; + } + + fr.fl_addr = *(uint32_t *) nl_addr_get_binary_addr(addr); + + msg = nlmsg_build_simple(0, flags); + if (!msg) + goto errout; + + if (nlmsg_append(msg, &fr, sizeof(fr), 1) < 0) + goto errout; + + return msg; + +errout: + nlmsg_free(msg); + return NULL; +} + +/** + * Perform FIB Lookup + * @arg handle Netlink handle. + * @arg req Lookup request object. + * @arg cache Cache for result. + * + * Builds a netlink message to request a FIB lookup, waits for the + * reply and adds the result to the specified cache. + * + * @return 0 on success or a negative error code. + */ +int flnl_lookup(struct nl_handle *handle, struct flnl_request *req, + struct nl_cache *cache) +{ + struct nl_msg *msg; + int err; + + msg = flnl_lookup_build_request(req, 0); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + nlmsg_free(msg); + if (err < 0) + return err; + + return nl_cache_pickup(handle, cache); +} + +/** @} */ + +/** + * @name Attribute Access + * @{ + */ + +int flnl_result_get_table_id(struct flnl_result *res) +{ + return res->fr_table_id; +} + +int flnl_result_get_prefixlen(struct flnl_result *res) +{ + return res->fr_prefixlen; +} + +int flnl_result_get_nexthop_sel(struct flnl_result *res) +{ + return res->fr_nh_sel; +} + +int flnl_result_get_type(struct flnl_result *res) +{ + return res->fr_type; +} + +int flnl_result_get_scope(struct flnl_result *res) +{ + return res->fr_scope; +} + +int flnl_result_get_error(struct flnl_result *res) +{ + return res->fr_error; +} + +/** @} */ + +static struct nl_cache_ops fib_lookup_ops = { + .co_name = "fib_lookup/fib_lookup", + .co_size = sizeof(struct flnl_result), + .co_hdrsize = sizeof(struct fib_result_nl), + .co_msgtypes = { + { 0, "any" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_FIB_LOOKUP, + .co_msg_parser = result_msg_parser, + .co_free_data = result_free_data, + .co_dump[NL_DUMP_BRIEF] = result_dump_brief, + .co_dump[NL_DUMP_FULL] = result_dump_full, + .co_filter = result_filter, +}; + +static void __init fib_lookup_init(void) +{ + nl_cache_mngt_register(&fib_lookup_ops); +} + +static void __exit fib_lookup_exit(void) +{ + nl_cache_mngt_unregister(&fib_lookup_ops); +} + +/** @} */ diff --git a/lib/fib_lookup/request.c b/lib/fib_lookup/request.c new file mode 100644 index 0000000..1986063 --- /dev/null +++ b/lib/fib_lookup/request.c @@ -0,0 +1,277 @@ +/* + * lib/fib_lookup/request.c FIB Lookup Request + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup fib_lookup + * @defgroup flreq Request + * @brief + * @{ + */ + +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define REQUEST_ATTR_ADDR 0x01 +#define REQUEST_ATTR_FWMARK 0x02 +#define REQUEST_ATTR_TOS 0x04 +#define REQUEST_ATTR_SCOPE 0x08 +#define REQUEST_ATTR_TABLE 0x10 +/** @endcond */ + +/** + * @name Lookup Request Creation/Deletion + * @{ + */ + +/** + * Allocate and initialize new lookup request object. + * @note Free the memory after usage using flnl_request_put() or + * flnl_request_free(). + * @return Newly allocated lookup request object or NULL if an error occured. + */ +struct flnl_request *flnl_request_alloc(void) +{ + struct flnl_request *req; + + req = calloc(1, sizeof(*req)); + if (req) + req->lr_refcnt = 1; + else + nl_errno(ENOMEM); + + return req; +} + +/** + * Request undestroyable reference of lookup request object. + * @arg req Lookup request object. + * @return Lookup request object of which the reference was given. + */ +struct flnl_request *flnl_request_get(struct flnl_request *req) +{ + req->lr_refcnt++; + + return req; +} + +/** + * Give back reference of lookup request object. + * @arg req Lookup request object to be given back. + * + * Decrements the reference counter and destroys the object if the + * last reference was given back. + */ +void flnl_request_put(struct flnl_request *req) +{ + if (!req) + return; + + if (req->lr_refcnt <= 1) + flnl_request_free(req); + else + req->lr_refcnt--; +} + +/** + * Free lookup request object. + * @arg req Lookup request object to be freed. + */ +void flnl_request_free(struct flnl_request *req) +{ + if (!req) + return; + + if (req->lr_refcnt != 1) + BUG(); + + free(req); +} + +/** @} */ + +/** + * @name Attribute Access + * @{ + */ + +/** + * Set firewall mark of lookup request object. + * @arg req Lookup request object. + * @arg fwmark Firewall mark. + */ +void flnl_request_set_fwmark(struct flnl_request *req, uint64_t fwmark) +{ + req->lr_fwmark = fwmark; + req->lr_mask |= REQUEST_ATTR_FWMARK; +} + +/** + * Get firewall mark of lookup request object. + * @arg req Lookup request object. + * @return Firewall mark or UINT_LEAST64_MAX if not available. + */ +uint64_t flnl_request_get_fwmark(struct flnl_request *req) +{ + if (req->lr_mask & REQUEST_ATTR_FWMARK) + return req->lr_fwmark; + else + return UINT_LEAST64_MAX; +} + +/** + * Set Type of Service of lookup request object. + * @arg req Lookup request object. + * @arg tos Type of Service. + */ +void flnl_request_set_tos(struct flnl_request *req, int tos) +{ + req->lr_tos = tos; + req->lr_mask |= REQUEST_ATTR_TOS; +} + +/** + * Get Type of Service of lookup request object. + * @arg req Lookup request object. + * @return Type of Service or -1 if not available. + */ +int flnl_request_get_tos(struct flnl_request *req) +{ + if (req->lr_mask & REQUEST_ATTR_TOS) + return req->lr_tos; + else + return -1; +} + +/** + * Set Scope of lookup request object. + * @arg req Lookup request oject. + * @arg scope Routing scope. + */ +void flnl_request_set_scope(struct flnl_request *req, int scope) +{ + req->lr_scope = scope; + req->lr_mask |= REQUEST_ATTR_SCOPE; +} + +/** + * Get scope of lookup request object. + * @arg req Lookup request object. + * @return Scope or -1 if not available. + */ +int flnl_request_get_scope(struct flnl_request *req) +{ + if (req->lr_mask & REQUEST_ATTR_SCOPE) + return req->lr_scope; + else + return -1; +} + +/** + * Set routing table of lookup request object. + * @arg req Lookup request object. + * @arg table Routing table. + */ +void flnl_request_set_table(struct flnl_request *req, int table) +{ + req->lr_table = table; + req->lr_mask |= REQUEST_ATTR_TABLE; +} + +/** + * Get routing table of lookup request object. + * @arg req Lookup request object. + * @return Routing table or -1 if not available. + */ +int flnl_request_get_table(struct flnl_request *req) +{ + if (req->lr_mask & REQUEST_ATTR_TABLE) + return req->lr_table; + else + return -1; +} + +/** + * Set destination address of lookup request object. + * @arg req Lookup request object. + * @arg addr IPv4 destination address. + */ +int flnl_request_set_addr(struct flnl_request *req, struct nl_addr *addr) +{ + if (addr->a_family != AF_INET) + return nl_error(EINVAL, "Address must be an IPv4 address"); + + if (req->lr_addr) + nl_addr_put(req->lr_addr); + + nl_addr_get(addr); + req->lr_addr = addr; + + req->lr_mask |= REQUEST_ATTR_ADDR; + + return 0; +} + +/** + * Get destination address of lookup request object. + * @arg req Lookup request object. + * @return Destination address or NULL if not available. + */ +struct nl_addr *flnl_request_get_addr(struct flnl_request *req) +{ + if (req->lr_mask & REQUEST_ATTR_ADDR) + return req->lr_addr; + else + return NULL; +} + +/** @} */ + +/** + * @name Miscellaneous + * @{ + */ + +/** + * Compares two lookup request objects. + * @arg a Lookup request object. + * @arg b Another lookup request object. + * + * @return Integer less than, equal to or greather than zero if \c is found, + * respectively to be less than, to, or be greater than \c b. + */ +int flnl_request_cmp(struct flnl_request *a, struct flnl_request *b) +{ +#define REQ(F) (a->lr_mask & REQUEST_ATTR_##F) +#define AVAIL(F) (b->lr_mask & REQUEST_ATTR_##F) +#define F_CUS(F, EXPR) (REQ(F) && (!AVAIL(F) || (EXPR))) +#define F_INT(F, N) (REQ(F) && (!AVAIL(F) || (a->N != b->N))) + + if (F_INT(FWMARK, lr_fwmark) || + F_INT(TOS, lr_tos) || + F_INT(SCOPE, lr_scope) || + F_INT(TABLE, lr_table) || + F_CUS(ADDR, nl_addr_cmp(a->lr_addr, b->lr_addr))) + return 0; +#undef REQ +#undef AVAIL +#undef F_CUS +#undef F_INT + return 1; +} + +/** @} */ + +/** @} */ diff --git a/lib/handlers.c b/lib/handlers.c new file mode 100644 index 0000000..c433230 --- /dev/null +++ b/lib/handlers.c @@ -0,0 +1,581 @@ +/* + * lib/handlers.c default netlink message handlers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup nl + * @defgroup cb Callbacks/Customization + * + * Customization via callbacks. + * @{ + */ + +#include +#include +#include +#include +#include + +static void print_header_content(FILE *ofd, struct nlmsghdr *n) +{ + char flags[128]; + char type[32]; + + fprintf(ofd, "type=%s length=%u flags=<%s> sequence-nr=%u pid=%u", + nl_nlmsgtype2str(n->nlmsg_type, type, sizeof(type)), + n->nlmsg_len, nl_nlmsg_flags2str(n->nlmsg_flags, flags, + sizeof(flags)), n->nlmsg_seq, n->nlmsg_pid); +} + +static inline void dump_hex(FILE *ofd, char *start, int len) +{ + int i, a, c, limit; + char ascii[21] = {0}; + + limit = 18; + fprintf(ofd, " "); + + for (i = 0, a = 0, c = 0; i < len; i++) { + int v = *(uint8_t *) (start + i); + + fprintf(ofd, "%02x ", v); + ascii[a++] = isprint(v) ? v : '.'; + + if (c == limit-1) { + fprintf(ofd, "%s\n", ascii); + if (i < (len - 1)) + fprintf(ofd, " "); + a = c = 0; + memset(ascii, 0, sizeof(ascii)); + } else + c++; + } + + if (c != 0) { + for (i = 0; i < (limit - c); i++) + fprintf(ofd, " "); + fprintf(ofd, "%s\n", ascii); + } +} + +static void print_hdr(FILE *ofd, struct nl_msg *msg) +{ + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct nl_cache_ops *ops; + char buf[128]; + + fprintf(ofd, " .nlmsg_len = %d\n", nlh->nlmsg_len); + + ops = nl_cache_mngt_associate(nlmsg_get_proto(msg), nlh->nlmsg_type); + + fprintf(ofd, " .nlmsg_type = %d <%s>\n", nlh->nlmsg_type, + ops ? nl_cache_mngt_type2name(ops, nlh->nlmsg_type, + buf, sizeof(buf)) + : nl_nlmsgtype2str(nlh->nlmsg_type, buf, sizeof(buf))); + fprintf(ofd, " .nlmsg_flags = %d <%s>\n", nlh->nlmsg_flags, + nl_nlmsg_flags2str(nlh->nlmsg_flags, buf, sizeof(buf))); + fprintf(ofd, " .nlmsg_seq = %d\n", nlh->nlmsg_seq); + fprintf(ofd, " .nlmsg_pid = %d\n", nlh->nlmsg_pid); + +} + +static void raw_dump_msg(FILE *ofd, struct nl_msg *msg) +{ + struct nlmsghdr *hdr = nlmsg_hdr(msg); + + fprintf(ofd, + "-------------------------- BEGIN NETLINK MESSAGE " + "---------------------------\n"); + + fprintf(ofd, " [HEADER] %Zu octets\n", sizeof(struct nlmsghdr)); + print_hdr(ofd, msg); + + if (hdr->nlmsg_type == NLMSG_ERROR && + hdr->nlmsg_len >= nlmsg_msg_size(sizeof(struct nlmsgerr))) { + struct nl_msg *errmsg; + struct nlmsgerr *err = nlmsg_data(hdr); + + fprintf(ofd, " [ERRORMSG] %Zu octets\n", sizeof(*err)); + fprintf(ofd, " .error = %d \"%s\"\n", err->error, + strerror(-err->error)); + fprintf(ofd, " [ORIGINAL MESSAGE] %Zu octets\n", sizeof(*hdr)); + + errmsg = nlmsg_build(&err->msg); + print_hdr(ofd, errmsg); + nlmsg_free(msg); + } else if (nlmsg_len(hdr) > 0) { + struct nl_cache_ops *ops; + int payloadlen = nlmsg_len(hdr); + int attrlen = 0; + + ops = nl_cache_mngt_associate(nlmsg_get_proto(msg), + hdr->nlmsg_type); + if (ops) { + attrlen = nlmsg_attrlen(hdr, ops->co_hdrsize); + payloadlen -= attrlen; + } + + fprintf(ofd, " [PAYLOAD] %d octets\n", payloadlen); + dump_hex(ofd, nlmsg_data(hdr), payloadlen); + + if (attrlen) { + int rem, padlen; + struct nlattr *nla; + + nlmsg_for_each_attr(nla, hdr, ops->co_hdrsize, rem) { + int alen = nla_len(nla); + + fprintf(ofd, " [ATTR %02d] %d octets\n", + nla->nla_type, alen); + dump_hex(ofd, nla_data(nla), alen); + + padlen = nla_padlen(alen); + if (padlen > 0) { + fprintf(ofd, " [PADDING] %d octets\n", + padlen); + dump_hex(ofd, nla_data(nla) + alen, + padlen); + } + } + } + } + + fprintf(ofd, + "--------------------------- END NETLINK MESSAGE " + "---------------------------\n"); +} + +static int nl_valid_handler_default(struct nl_msg *msg, void *arg) +{ + return NL_PROCEED; +} + +static int nl_finish_handler_default(struct nl_msg *msg, void *arg) +{ + return NL_EXIT; +} + +static int nl_invalid_handler_default(struct nl_msg *msg, void *arg) +{ + return NL_EXIT; +} + +static int nl_msg_in_handler_default(struct nl_msg *msg, void *arg) +{ + return NL_PROCEED; +} + +static int nl_msg_out_handler_default(struct nl_msg *msg, void *arg) +{ + return NL_PROCEED; +} + +static int nl_overrun_handler_default(struct nl_msg *msg, void *arg) +{ + return NL_EXIT; +} + +static int nl_skipped_handler_default(struct nl_msg *msg, void *arg) +{ + return NL_SKIP; +} + +static int nl_ack_handler_default(struct nl_msg *msg, void *arg) +{ + return NL_EXIT; +} + +static int nl_error_handler_default(struct sockaddr_nl *who, + struct nlmsgerr *e, void *arg) +{ + return NL_EXIT; +} + +static int nl_valid_handler_verbose(struct nl_msg *msg, void *arg) +{ + FILE *ofd = arg ? arg : stdout; + + fprintf(ofd, "-- Warning: unhandled valid message: "); + print_header_content(ofd, nlmsg_hdr(msg)); + fprintf(ofd, "\n"); + + return NL_PROCEED; +} + +static int nl_finish_handler_verbose(struct nl_msg *msg, void *arg) +{ + return NL_EXIT; +} + +static int nl_msg_in_handler_verbose(struct nl_msg *msg, void *arg) +{ + return NL_PROCEED; +} + +static int nl_invalid_handler_verbose(struct nl_msg *msg, void *arg) +{ + FILE *ofd = arg ? arg : stderr; + + fprintf(ofd, "-- Error: Invalid message: "); + print_header_content(ofd, nlmsg_hdr(msg)); + fprintf(ofd, "\n"); + + return NL_EXIT; +} + +static int nl_msg_out_handler_verbose(struct nl_msg *msg, void *arg) +{ + return NL_PROCEED; +} + +static int nl_overrun_handler_verbose(struct nl_msg *msg, void *arg) +{ + FILE *ofd = arg ? arg : stderr; + + fprintf(ofd, "-- Error: Netlink Overrun: "); + print_header_content(ofd, nlmsg_hdr(msg)); + fprintf(ofd, "\n"); + + return NL_EXIT; +} + +static int nl_ack_handler_verbose(struct nl_msg *msg, void *arg) +{ + return NL_EXIT; +} + +static int nl_skipped_handler_verbose(struct nl_msg *msg, void *arg) +{ + return NL_SKIP; +} + +static int nl_error_handler_verbose(struct sockaddr_nl *who, + struct nlmsgerr *e, void *arg) +{ + FILE *ofd = arg ? arg : stderr; + + fprintf(ofd, "-- Error received: %s\n-- Original message: ", + strerror(-e->error)); + print_header_content(ofd, &e->msg); + fprintf(ofd, "\n"); + + return NL_EXIT; +} + +static int nl_valid_handler_debug(struct nl_msg *msg, void *arg) +{ + FILE *ofd = arg ? arg : stderr; + + fprintf(ofd, "-- Debug: Valid message: "); + print_header_content(ofd, nlmsg_hdr(msg)); + fprintf(ofd, "\n"); + + return NL_PROCEED; +} + +static int nl_finish_handler_debug(struct nl_msg *msg, void *arg) +{ + FILE *ofd = arg ? arg : stderr; + + fprintf(ofd, "-- Debug: End of multipart message block: "); + print_header_content(ofd, nlmsg_hdr(msg)); + fprintf(ofd, "\n"); + + return NL_EXIT; +} + +static int nl_invalid_handler_debug(struct nl_msg *msg, void *arg) +{ + return nl_invalid_handler_verbose(msg, arg); +} + +static int nl_msg_in_handler_debug(struct nl_msg *msg, void *arg) +{ + FILE *ofd = arg ? arg : stderr; + + fprintf(ofd, "-- Debug: Received Message:\n"); + raw_dump_msg(ofd, msg); + + return NL_PROCEED; +} + +static int nl_msg_out_handler_debug(struct nl_msg *msg, void *arg) +{ + FILE *ofd = arg ? arg : stderr; + + fprintf(ofd, "-- Debug: Sent Message:\n"); + raw_dump_msg(ofd, msg); + + return NL_PROCEED; +} + +static int nl_overrun_handler_debug(struct nl_msg *msg, void *arg) +{ + return nl_overrun_handler_verbose(msg, arg); +} + +static int nl_skipped_handler_debug(struct nl_msg *msg, void *arg) +{ + FILE *ofd = arg ? arg : stderr; + + fprintf(ofd, "-- Debug: Skipped message: "); + print_header_content(ofd, nlmsg_hdr(msg)); + fprintf(ofd, "\n"); + + return NL_SKIP; +} + +static int nl_ack_handler_debug(struct nl_msg *msg, void *arg) +{ + FILE *ofd = arg ? arg : stderr; + + fprintf(ofd, "-- Debug: ACK: "); + print_header_content(ofd, nlmsg_hdr(msg)); + fprintf(ofd, "\n"); + + return NL_EXIT; +} + +static int nl_error_handler_debug(struct sockaddr_nl *who, + struct nlmsgerr *e, void *arg) +{ + return nl_error_handler_verbose(who, e, arg); +} + +static nl_recvmsg_msg_cb_t cb_def[NL_CB_TYPE_MAX+1][NL_CB_KIND_MAX+1] = { + [NL_CB_VALID] = { + [NL_CB_DEFAULT] = nl_valid_handler_default, + [NL_CB_VERBOSE] = nl_valid_handler_verbose, + [NL_CB_DEBUG] = nl_valid_handler_debug, + }, + [NL_CB_FINISH] = { + [NL_CB_DEFAULT] = nl_finish_handler_default, + [NL_CB_VERBOSE] = nl_finish_handler_verbose, + [NL_CB_DEBUG] = nl_finish_handler_debug, + }, + [NL_CB_INVALID] = { + [NL_CB_DEFAULT] = nl_invalid_handler_default, + [NL_CB_VERBOSE] = nl_invalid_handler_verbose, + [NL_CB_DEBUG] = nl_invalid_handler_debug, + }, + [NL_CB_MSG_IN] = { + [NL_CB_DEFAULT] = nl_msg_in_handler_default, + [NL_CB_VERBOSE] = nl_msg_in_handler_verbose, + [NL_CB_DEBUG] = nl_msg_in_handler_debug, + }, + [NL_CB_MSG_OUT] = { + [NL_CB_DEFAULT] = nl_msg_out_handler_default, + [NL_CB_VERBOSE] = nl_msg_out_handler_verbose, + [NL_CB_DEBUG] = nl_msg_out_handler_debug, + }, + [NL_CB_OVERRUN] = { + [NL_CB_DEFAULT] = nl_overrun_handler_default, + [NL_CB_VERBOSE] = nl_overrun_handler_verbose, + [NL_CB_DEBUG] = nl_overrun_handler_debug, + }, + [NL_CB_SKIPPED] = { + [NL_CB_DEFAULT] = nl_skipped_handler_default, + [NL_CB_VERBOSE] = nl_skipped_handler_verbose, + [NL_CB_DEBUG] = nl_skipped_handler_debug, + }, + [NL_CB_ACK] = { + [NL_CB_DEFAULT] = nl_ack_handler_default, + [NL_CB_VERBOSE] = nl_ack_handler_verbose, + [NL_CB_DEBUG] = nl_ack_handler_debug, + }, +}; + +static nl_recvmsg_err_cb_t cb_err_def[NL_CB_KIND_MAX+1] = { + [NL_CB_DEFAULT] = nl_error_handler_default, + [NL_CB_VERBOSE] = nl_error_handler_verbose, + [NL_CB_DEBUG] = nl_error_handler_debug, +}; + +/** + * @name Callback Handle Management + * @{ + */ + +/** + * Allocate a new callback handle + * @arg kind callback kind to be used for initialization + * @return Newly allocated callback handle or NULL + */ +struct nl_cb *nl_cb_new(enum nl_cb_kind kind) +{ + int i; + struct nl_cb *cb; + + if (kind < 0 || kind > NL_CB_KIND_MAX) + return NULL; + + cb = calloc(1, sizeof(*cb)); + if (!cb) { + nl_errno(ENOMEM); + return NULL; + } + + for (i = 0; i <= NL_CB_TYPE_MAX; i++) + nl_cb_set(cb, i, kind, NULL, NULL); + + nl_cb_err(cb, kind, NULL, NULL); + + return cb; +} + +/** + * Destroy a callback handle + * @arg cb callback handle + */ +void nl_cb_destroy(struct nl_cb *cb) +{ + free(cb); +} + +/** + * Clone an existing callback handle + * @arg orig original callback handle + * @return Newly allocated callback handle being a duplicate of + * orig or NULL + */ +struct nl_cb *nl_cb_clone(struct nl_cb *orig) +{ + struct nl_cb *cb; + + cb = nl_cb_new(NL_CB_DEFAULT); + if (!cb) + return NULL; + + memcpy(cb, orig, sizeof(*orig)); + + return cb; +} + +/** @} */ + +/** + * @name Callback Setup + * @{ + */ + +/** + * Set up a callback + * @arg cb callback configuration + * @arg type which type callback to set + * @arg kind kind of callback + * @arg func callback function + * @arg arg argument to be passwd to callback function + * + * @return 0 on success or a negative error code + */ +int nl_cb_set(struct nl_cb *cb, enum nl_cb_type type, enum nl_cb_kind kind, + nl_recvmsg_msg_cb_t func, void *arg) +{ + if (type < 0 || type > NL_CB_TYPE_MAX) + return nl_error(ERANGE, "Callback type out of range"); + + if (kind < 0 || kind > NL_CB_KIND_MAX) + return nl_error(ERANGE, "Callback kind out of range"); + + if (kind == NL_CB_CUSTOM) { + cb->cb_set[type] = func; + cb->cb_args[type] = arg; + } else { + cb->cb_set[type] = cb_def[type][kind]; + cb->cb_args[type] = arg; + } + + return 0; +} + +/** + * Set up a all callbacks + * @arg cb callback configuration + * @arg kind kind of callback + * @arg func callback function + * @arg arg argument to be passwd to callback function + * + * @return 0 on success or a negative error code + */ +int nl_cb_set_all(struct nl_cb *cb, enum nl_cb_kind kind, + nl_recvmsg_msg_cb_t func, void *arg) +{ + int i, err; + + for (i = 0; i <= NL_CB_TYPE_MAX; i++) { + err = nl_cb_set(cb, i, kind, func, arg); + if (err < 0) + return err; + } + + return 0; +} + +/** + * Set up an error callback + * @arg cb callback configuration + * @arg kind kind of callback + * @arg func callback function + * @arg arg argument to be passed to callback function + */ +int nl_cb_err(struct nl_cb *cb, enum nl_cb_kind kind, + nl_recvmsg_err_cb_t func, void *arg) +{ + if (kind < 0 || kind > NL_CB_KIND_MAX) + return nl_error(ERANGE, "Callback kind out of range"); + + if (kind == NL_CB_CUSTOM) { + cb->cb_err = func; + cb->cb_err_arg = arg; + } else { + cb->cb_err = cb_err_def[kind]; + cb->cb_err_arg = arg; + } + + return 0; +} + +/** + * Overwrite internal calls to nl_recvmsgs() + * @arg cb callback configuration + * @arg func replacement callback for nl_recvmsgs() + */ +void nl_cb_overwrite_recvmsgs(struct nl_cb *cb, + int (*func)(struct nl_handle *, struct nl_cb *)) +{ + cb->cb_recvmsgs_ow = func; +} + +/** + * Overwrite internal calls to nl_recv() + * @arg cb callback configuration + * @arg func replacement callback for nl_recv() + */ +void nl_cb_overwrite_recv(struct nl_cb *cb, + int (*func)(struct nl_handle *, struct sockaddr_nl *, + unsigned char **, struct ucred **)) +{ + cb->cb_recv_ow = func; +} + +/** + * Overwrite internal calls to nl_send() + * @arg cb callback configuration + * @arg func replacement callback for nl_send() + */ +void nl_cb_overwrite_send(struct nl_cb *cb, + int (*func)(struct nl_handle *, struct nl_msg *)) +{ + cb->cb_send_ow = func; +} + +/** @} */ + +/** @} */ diff --git a/lib/msg.c b/lib/msg.c new file mode 100644 index 0000000..adb552f --- /dev/null +++ b/lib/msg.c @@ -0,0 +1,717 @@ +/* + * lib/msg.c Netlink Messages Interface + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup nl + * @defgroup msg Messages + * Netlink Message Construction/Parsing Interface + * + * The following information is partly extracted from RFC3549 + * (ftp://ftp.rfc-editor.org/in-notes/rfc3549.txt) + * + * @par Message Format + * Netlink messages consist of a byte stream with one or multiple + * Netlink headers and an associated payload. If the payload is too big + * to fit into a single message it, can be split over multiple Netlink + * messages, collectively called a multipart message. For multipart + * messages, the first and all following headers have the \c NLM_F_MULTI + * Netlink header flag set, except for the last header which has the + * Netlink header type \c NLMSG_DONE. + * + * @par + * The Netlink message header (\link nlmsghdr struct nlmsghdr\endlink) is shown below. + * @code + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Length | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Type | Flags | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Sequence Number | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Process ID (PID) | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * @endcode + * + * @par + * The netlink message header and payload must be aligned properly: + * @code + * <------- NLMSG_ALIGN(hlen) ------> <---- NLMSG_ALIGN(len) ---> + * +----------------------------+- - -+- - - - - - - - - - -+- - -+ + * | Header | Pad | Payload | Pad | + * | struct nlmsghdr | | | | + * +----------------------------+- - -+- - - - - - - - - - -+- - -+ + * @endcode + * @par + * Message Format: + * @code + * <--- nlmsg_total_size(payload) ---> + * <-- nlmsg_msg_size(payload) -> + * +----------+- - -+-------------+- - -+-------- - - + * | nlmsghdr | Pad | Payload | Pad | nlmsghdr + * +----------+- - -+-------------+- - -+-------- - - + * nlmsg_data(nlh)---^ ^ + * nlmsg_next(nlh)-----------------------+ + * @endcode + * @par + * The payload may consist of arbitary data but may have strict + * alignment and formatting rules depening on the specific netlink + * families. + * @par + * @code + * <---------------------- nlmsg_len(nlh) ---------------------> + * <------ hdrlen ------> <- nlmsg_attrlen(nlh, hdrlen) -> + * +----------------------+- - -+--------------------------------+ + * | Family Header | Pad | Attributes | + * +----------------------+- - -+--------------------------------+ + * nlmsg_attrdata(nlh, hdrlen)---^ + * @endcode + * @par The ACK Netlink Message + * This message is actually used to denote both an ACK and a NACK. + * Typically, the direction is from FEC to CPC (in response to an ACK + * request message). However, the CPC should be able to send ACKs back + * to FEC when requested. + * @code + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Netlink message header | + * | type = NLMSG_ERROR | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Error code | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | OLD Netlink message header | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * @endcode + * + * @par 1) Creating a new netlink message + * @code + * // The most common way to start creating a message is by providing an + * // defined netlink header to nlmsg_build(): + * struct nlmsghdr hdr = { + * .nlmsg_type = MY_TYPE, + * .nlmsg_flags = MY_FLAGS, + * }; + * struct nl_msg *msg = nlmsg_build(&hdr); + * + * // For simple usages where only the message type and flags is of + * // interenst a shortcut can be taken: + * struct nl_msg *msg = nlmsg_build_simple(MY_TYPE, MY_FLAGS); + * + * // When using a headerless message for creating nested attributes + * // the header is not required and nlmsg_build_no_hdr() may be used: + * struct nl_msg *msg = nlmsg_build_no_hdr(); + * + * // The header can later be retrieved with nlmsg_hdr() and changed again: + * nlmsg_hdr(msg)->nlmsg_flags |= YET_ANOTHER_FLAG; + * @endcode + * + * @par 2) Appending data to the message + * @code + * // Payload may be added to the message via nlmsg_append(). The fourth + * // parameter specifies whether to pad up to NLMSG_ALIGN to make sure + * // that a possible further data block is properly aligned. + * nlmsg_append(msg, &mydata, sizeof(mydata), 0); + * @endcode + * + * @par 3) Cleaning up message construction + * @code + * // After successful use of the message, the memory must be freed + * // using nlmsg_free() + * nlmsg_free(msg); + * @endcode + * + * @par Example 2 (Parsing messages): + * @code + * int n; + * unsigned char *buf; + * struct nlmsghdr *hdr; + * + * n = nl_recv(handle, NULL, &buf); + * + * hdr = (struct nlmsghdr *) buf; + * while (nlmsg_ok(hdr, n)) { + * // Process message here... + * hdr = nlmsg_next(hdr, &n); + * } + * @endcode + * @{ + */ + +#include +#include +#include +#include +#include +#include + +/** + * @name Size Calculations + * @{ + */ + +/** + * length of netlink message not including padding + * @arg payload length of message payload + */ +int nlmsg_msg_size(int payload) +{ + return NLMSG_HDRLEN + payload; +} + +/** + * length of netlink message including padding + * @arg payload length of message payload + */ +int nlmsg_total_size(int payload) +{ + return NLMSG_ALIGN(nlmsg_msg_size(payload)); +} + +/** + * length of padding at the message's tail + * @arg payload length of message payload + */ +int nlmsg_padlen(int payload) +{ + return nlmsg_total_size(payload) - nlmsg_msg_size(payload); +} + +/** @} */ + +/** + * @name Payload Access + * @{ + */ + +/** + * head of message payload + * @arg nlh netlink messsage header + */ +void *nlmsg_data(const struct nlmsghdr *nlh) +{ + return (unsigned char *) nlh + NLMSG_HDRLEN; +} + +void *nlmsg_tail(const struct nlmsghdr *nlh) +{ + return (unsigned char *) nlh + NLMSG_ALIGN(nlh->nlmsg_len); +} + +/** + * length of message payload + * @arg nlh netlink message header + */ +int nlmsg_len(const struct nlmsghdr *nlh) +{ + return nlh->nlmsg_len - NLMSG_HDRLEN; +} + +/** @} */ + +/** + * @name Attribute Access + * @{ + */ + +/** + * head of attributes data + * @arg nlh netlink message header + * @arg hdrlen length of family specific header + */ +struct nlattr *nlmsg_attrdata(const struct nlmsghdr *nlh, int hdrlen) +{ + unsigned char *data = nlmsg_data(nlh); + return (struct nlattr *) (data + NLMSG_ALIGN(hdrlen)); +} + +/** + * length of attributes data + * @arg nlh netlink message header + * @arg hdrlen length of family specific header + */ +int nlmsg_attrlen(const struct nlmsghdr *nlh, int hdrlen) +{ + return nlmsg_len(nlh) - NLMSG_ALIGN(hdrlen); +} + +/** @} */ + +/** + * @name Message Parsing + * @{ + */ + +/** + * check if the netlink message fits into the remaining bytes + * @arg nlh netlink message header + * @arg remaining number of bytes remaining in message stream + */ +int nlmsg_ok(const struct nlmsghdr *nlh, int remaining) +{ + return (remaining >= sizeof(struct nlmsghdr) && + nlh->nlmsg_len >= sizeof(struct nlmsghdr) && + nlh->nlmsg_len <= remaining); +} + +/** + * next netlink message in message stream + * @arg nlh netlink message header + * @arg remaining number of bytes remaining in message stream + * + * @returns the next netlink message in the message stream and + * decrements remaining by the size of the current message. + */ +struct nlmsghdr *nlmsg_next(struct nlmsghdr *nlh, int *remaining) +{ + int totlen = NLMSG_ALIGN(nlh->nlmsg_len); + + *remaining -= totlen; + + return (struct nlmsghdr *) ((unsigned char *) nlh + totlen); +} + +/** + * parse attributes of a netlink message + * @arg nlh netlink message header + * @arg hdrlen length of family specific header + * @arg tb destination array with maxtype+1 elements + * @arg maxtype maximum attribute type to be expected + * @arg policy validation policy + * + * See nla_parse() + */ +int nlmsg_parse(struct nlmsghdr *nlh, int hdrlen, struct nlattr *tb[], + int maxtype, struct nla_policy *policy) +{ + if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) + return nl_errno(EINVAL); + + return nla_parse(tb, maxtype, nlmsg_attrdata(nlh, hdrlen), + nlmsg_attrlen(nlh, hdrlen), policy); +} + +/** + * nlmsg_find_attr - find a specific attribute in a netlink message + * @arg nlh netlink message header + * @arg hdrlen length of familiy specific header + * @arg attrtype type of attribute to look for + * + * Returns the first attribute which matches the specified type. + */ +struct nlattr *nlmsg_find_attr(struct nlmsghdr *nlh, int hdrlen, int attrtype) +{ + return nla_find(nlmsg_attrdata(nlh, hdrlen), + nlmsg_attrlen(nlh, hdrlen), attrtype); +} + +/** + * nlmsg_validate - validate a netlink message including attributes + * @arg nlh netlinket message header + * @arg hdrlen length of familiy specific header + * @arg maxtype maximum attribute type to be expected + * @arg policy validation policy + */ +int nlmsg_validate(struct nlmsghdr *nlh, int hdrlen, int maxtype, + struct nla_policy *policy) +{ + if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) + return nl_errno(EINVAL); + + return nla_validate(nlmsg_attrdata(nlh, hdrlen), + nlmsg_attrlen(nlh, hdrlen), maxtype, policy); +} + +/** @} */ + +/** + * @name Message Building/Access + * @{ + */ + +struct nl_msg *nlmsg_new(void) +{ + struct nl_msg *nm; + + nm = calloc(1, sizeof(*nm)); + if (!nm) + goto errout; + + nm->nm_nlh = calloc(1, nlmsg_msg_size(0)); + if (!nm->nm_nlh) + goto errout; + + nm->nm_nlh->nlmsg_len = nlmsg_msg_size(0); + return nm; +errout: + free(nm); + nl_errno(ENOMEM); + return NULL; +} + + +/** + * Build a new netlink message + * @arg hdr Netlink message header template + * + * Builds a new netlink message with a tailroom for the netlink + * message header. If \a hdr is not NULL it will be used as a + * template for the netlink message header, otherwise the header + * is left blank. + * + * @return Newly allocated netlink message or NULL + */ +struct nl_msg *nlmsg_build(struct nlmsghdr *hdr) +{ + struct nl_msg *nm; + + nm = nlmsg_new(); + if (nm && hdr) { + int size = nm->nm_nlh->nlmsg_len; + memcpy(nm->nm_nlh, hdr, sizeof(*hdr)); + nm->nm_nlh->nlmsg_len = size; + } + + return nm; +} + +struct nl_msg *nlmsg_build_simple(int nlmsgtype, int flags) +{ + struct nlmsghdr nlh = { + .nlmsg_type = nlmsgtype, + .nlmsg_flags = flags, + }; + + return nlmsg_build(&nlh); +} + +struct nl_msg *nlmsg_build_no_hdr(void) +{ + return nlmsg_build(NULL); +} + +struct nl_msg *nlmsg_convert(struct nlmsghdr *hdr) +{ + struct nl_msg *nm; + + nm = calloc(1, sizeof(struct nl_msg)); + if (!nm) + goto errout; + + nm->nm_nlh = calloc(1, NLMSG_ALIGN(hdr->nlmsg_len)); + if (!nm->nm_nlh) + goto errout; + + memcpy(nm->nm_nlh, hdr, NLMSG_ALIGN(hdr->nlmsg_len)); + + return nm; +errout: + free(nm); + nl_errno(ENOMEM); + return NULL; +} + +/** + * Append raw data to a netlink message + * @arg n netlink message + * @arg data data to add + * @arg len length of data + * @arg pad add padding at the end? + * + * Extends the netlink message as needed and appends the data of given + * length to the message. The length of the message is not aligned to + * anything. The caller is responsible to provide a length and + * evtentually padded data to fullfil any alignment requirements. + * + * @return 0 on success or a negative error code + * @attention Appending of improperly aligned raw data may result in + * a corrupt message. It is left to you to add the right + * amount of data to have the message aligned to NLMSG_ALIGNTO + * in the end. + */ +int nlmsg_append(struct nl_msg *n, void *data, size_t len, int pad) +{ + void *tmp; + + if (pad) + len = NLMSG_ALIGN(len); + + tmp = realloc(n->nm_nlh, n->nm_nlh->nlmsg_len + len); + if (!tmp) + return nl_errno(ENOMEM); + + n->nm_nlh = tmp; + memcpy((void *) n->nm_nlh + n->nm_nlh->nlmsg_len, data, len); + n->nm_nlh->nlmsg_len += len; + + return 0; +} + + +/** + * nlmsg_put - Add a netlink message header + * @arg n netlink message + * @arg pid netlink process id + * @arg seq sequence number of message + * @arg type message type + * @arg payload length of message payload + * @arg flags message flags + */ +struct nlmsghdr *nlmsg_put(struct nl_msg *n, uint32_t pid, uint32_t seq, + int type, int payload, int flags) +{ + struct nlmsghdr *nlh; + + if (n->nm_nlh->nlmsg_len < NLMSG_HDRLEN) + BUG(); + + nlh = (struct nlmsghdr *) n->nm_nlh; + nlh->nlmsg_type = type; + nlh->nlmsg_len = nlmsg_msg_size(payload); + nlh->nlmsg_flags = flags; + nlh->nlmsg_pid = pid; + nlh->nlmsg_seq = seq; + + memset((unsigned char *) nlmsg_data(nlh) + payload, 0, + nlmsg_padlen(payload)); + + return nlh; +} + +/** + * Return actual netlink message + * @arg n netlink message + * + * Returns the actual netlink message casted to the type of the netlink + * message header. + * + * @return A pointer to the netlink message. + */ +struct nlmsghdr *nlmsg_hdr(struct nl_msg *n) +{ + return n->nm_nlh; +} + +/** + * Free a netlink message + * @arg n netlink message + * + * Destroys a netlink message and frees up all used memory. + * + * @pre The message must be unused. + */ +void nlmsg_free(struct nl_msg *n) +{ + if (!n) + return; + + free(n->nm_nlh); + free(n); +} + +/** @} */ + +/** + * @name Attribute Modification + * @{ + */ + +void nlmsg_set_proto(struct nl_msg *msg, int protocol) +{ + msg->nm_protocol = protocol; +} + +int nlmsg_get_proto(struct nl_msg *msg) +{ + return msg->nm_protocol; +} + +void nlmsg_set_src(struct nl_msg *msg, struct sockaddr_nl *addr) +{ + memcpy(&msg->nm_src, addr, sizeof(*addr)); +} + +struct sockaddr_nl *nlmsg_get_src(struct nl_msg *msg) +{ + return &msg->nm_src; +} + +void nlmsg_set_dst(struct nl_msg *msg, struct sockaddr_nl *addr) +{ + memcpy(&msg->nm_dst, addr, sizeof(*addr)); +} + +struct sockaddr_nl *nlmsg_get_dst(struct nl_msg *msg) +{ + return &msg->nm_dst; +} + +void nlmsg_set_creds(struct nl_msg *msg, struct ucred *creds) +{ + memcpy(&msg->nm_creds, creds, sizeof(*creds)); + msg->nm_flags |= NL_MSG_CRED_PRESENT; +} + +struct ucred *nlmsg_get_creds(struct nl_msg *msg) +{ + if (msg->nm_flags & NL_MSG_CRED_PRESENT) + return &msg->nm_creds; + return NULL; +} + +/** @} */ + +/** + * @name Netlink Message Type Translations + * @{ + */ + +static struct trans_tbl nl_msgtypes[] = { + __ADD(NLMSG_NOOP,NOOP) + __ADD(NLMSG_ERROR,ERROR) + __ADD(NLMSG_DONE,DONE) + __ADD(NLMSG_OVERRUN,OVERRUN) +}; + +/** + * Convert netlink message type number to character string. + * @arg type Netlink message type. + * @arg buf Destination buffer. + * @arg size Size of destination buffer. + * + * Converts a netlink message type number to a character string and stores + * it in the provided buffer. + * + * @return The destination buffer or the type encoded in hexidecimal form + * if no match was found. + */ +char *nl_nlmsgtype2str(int type, char *buf, size_t size) +{ + return __type2str(type, buf, size, nl_msgtypes, + ARRAY_SIZE(nl_msgtypes)); +} + +/** + * Convert character string to netlink message type. + * @arg name Name of netlink message type. + * + * Converts the provided character string specifying a netlink message type + * into the corresponding numeric value + * + * @return Numeric netlink message type or a negative value + * if no match was found. + */ +int nl_str2nlmsgtype(const char *name) +{ + return __str2type(name, nl_msgtypes, ARRAY_SIZE(nl_msgtypes)); +} + +/** @} */ + +/** + * @name Netlink Message Flags Translations + * @{ + */ + +/** + * Translate netlink message flags into a character string (Reentrant). + * @arg flags netlink message flags + * @arg buf destination buffer + * @arg len buffer length + * + * Translates netlink message flags into a character string and stores + * it in the provided buffer. + * + * @return The destination buffer + */ +char *nl_nlmsg_flags2str(int flags, char *buf, size_t len) +{ + memset(buf, 0, len); + +#define PRINT_FLAG(f) \ + if (flags & NLM_F_##f) { \ + flags &= ~NLM_F_##f; \ + strncat(buf, #f, len - strlen(buf) - 1); \ + if (flags) \ + strncat(buf, ",", len - strlen(buf) - 1); \ + } + + PRINT_FLAG(REQUEST); + PRINT_FLAG(MULTI); + PRINT_FLAG(ACK); + PRINT_FLAG(ECHO); + PRINT_FLAG(ROOT); + PRINT_FLAG(MATCH); + PRINT_FLAG(ATOMIC); + PRINT_FLAG(REPLACE); + PRINT_FLAG(EXCL); + PRINT_FLAG(CREATE); + PRINT_FLAG(APPEND); + + if (flags) { + char s[32]; + snprintf(s, sizeof(s), "0x%x", flags); + strncat(buf, s, len - strlen(buf) - 1); + } +#undef PRINT_FLAG + + return buf; +} + +/** @} */ + +/** + * @name Direct Parsing + * @{ + */ + +/** @cond SKIP */ +struct dp_xdata { + void (*cb)(struct nl_object *, void *); + void *arg; +}; +/** @endcond */ + +static int parse_cb(struct nl_object *obj, struct nl_parser_param *p) +{ + struct dp_xdata *x = p->pp_arg; + + x->cb(obj, x->arg); + nl_object_put(obj); + return 0; +} + +int nl_msg_parse(struct nl_msg *msg, void (*cb)(struct nl_object *, void *), + void *arg) +{ + struct nl_cache_ops *ops; + struct nl_parser_param p = { + .pp_cb = parse_cb + }; + struct dp_xdata x = { + .cb = cb, + .arg = arg, + }; + + ops = nl_cache_mngt_associate(nlmsg_get_proto(msg), + nlmsg_hdr(msg)->nlmsg_type); + if (ops == NULL) + return nl_error(ENOENT, "Unknown message type %d", + nlmsg_hdr(msg)->nlmsg_type); + p.pp_arg = &x; + + return nl_cache_parse(ops, NULL, nlmsg_hdr(msg), &p); +} + +/** @} */ + +/** @} */ diff --git a/lib/nl.c b/lib/nl.c new file mode 100644 index 0000000..600f93e --- /dev/null +++ b/lib/nl.c @@ -0,0 +1,1080 @@ +/* + * lib/nl.c Core Netlink Interface + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @defgroup nl Core Netlink API + * @brief + * + * @par 1) Creating the netlink handle + * @code + * struct nl_handle *handle; + * + * // Allocate and initialize a new netlink handle + * handle = nl_handle_new(); + * + * // Are multiple handles being allocated? You have to provide a unique + * // netlink process id and overwrite the default local process id. + * nl_handle_set_pid(handle, MY_UNIQUE_PID); + * + * // Is this socket used for event processing? You need to disable sequence + * // number checking in order to be able to receive messages not explicitely + * // requested. + * nl_disable_sequence_check(handle); + * + * // Use nl_handle_get_fd() to fetch the file description, for example to + * // put a socket into non-blocking i/o mode. + * fcntl(nl_handle_get_fd(handle), F_SETFL, O_NONBLOCK); + * @endcode + * + * @par 2) Joining Groups + * @code + * // You may join/subscribe to as many groups as you want, don't forget + * // to eventually disable sequence number checking. Note: Joining must + * // be done before connecting/binding the socket. + * nl_join_groups(handle, GROUP_ID1 | GROUP_ID2); + * @endcode + * + * @par 3) Connecting the socket + * @code + * // Bind and connect the socket to a protocol, NETLINK_ROUTE in this example. + * nl_connect(handle, NETLINK_ROUTE); + * @endcode + * + * @par 4) Sending data + * @code + * // The most rudimentary method is to use nl_sendto() simply pushing + * // a piece of data to the other netlink peer. This method is not + * // recommended. + * const char buf[] = { 0x01, 0x02, 0x03, 0x04 }; + * nl_sendto(handle, buf, sizeof(buf)); + * + * // A more comfortable interface is nl_send() taking a pointer to + * // a netlink message. + * struct nl_msg *msg = my_msg_builder(); + * nl_send(handle, nlmsg_hdr(msg)); + * + * // nl_sendmsg() provides additional control over the sendmsg() message + * // header in order to allow more specific addressing of multiple peers etc. + * struct msghdr hdr = { ... }; + * nl_sendmsg(handle, nlmsg_hdr(msg), &hdr); + * + * // You're probably too lazy to fill out the netlink pid, sequence number + * // and message flags all the time. nl_send_auto_complete() automatically + * // extends your message header as needed with an appropriate sequence + * // number, the netlink pid stored in the netlink handle and the message + * // flags NLM_F_REQUEST and NLM_F_ACK + * nl_send_auto_complete(handle, nlmsg_hdr(msg)); + * + * // Simple protocols don't require the complex message construction interface + * // and may favour nl_send_simple() to easly send a bunch of payload + * // encapsulated in a netlink message header. + * nl_send_simple(handle, MY_MSG_TYPE, 0, buf, sizeof(buf)); + * @endcode + * + * @par 5) Receiving data + * @code + * // nl_recv() receives a single message allocating a buffer for the message + * // content and gives back the pointer to you. + * struct sockaddr_nl peer; + * unsigned char *msg; + * nl_recv(handle, &peer, &msg); + * + * // nl_recvmsgs() receives a bunch of messages until the callback system + * // orders it to state, usually after receving a compolete multi part + * // message series. + * nl_recvmsgs(handle, my_callback_configuration); + * + * // nl_recvmsgs_def() acts just like nl_recvmsg() but uses the callback + * // configuration stored in the handle. + * nl_recvmsgs_def(handle); + * + * // In case you want to wait for the ACK to be recieved that you requested + * // with your latest message, you can call nl_wait_for_ack() + * nl_wait_for_ack(handle); + * @endcode + * + * @par 6) Cleaning up + * @code + * // Close the socket first to release kernel memory + * nl_close(handle); + * + * // Finally destroy the netlink handle + * nl_handle_destroy(handle); + * @endcode + * + * @{ + */ + +#include +#include +#include +#include +#include +#include + +/** + * @name Handle Management + * @{ + */ + +/** + * Allocate and initialize new non-default netlink handle. + * @arg kind Kind of callback handler to use per default. + * + * Allocates and initializes a new netlink handle, the netlink process id + * is set to the local process id which may conflict if multiple handles + * are created, therefore you may have to overwrite it using + * nl_handle_set_pid(). The initial sequence number is initialized to the + * current UNIX time. + * + * @return Newly allocated netlink handle or NULL. + */ +struct nl_handle *nl_handle_alloc_nondefault(enum nl_cb_kind kind) +{ + struct nl_handle *handle; + + handle = calloc(1, sizeof(*handle)); + if (!handle) + goto errout; + + handle->h_cb = nl_cb_new(kind); + if (!handle->h_cb) + goto errout; + + handle->h_local.nl_family = AF_NETLINK; + handle->h_peer.nl_family = AF_NETLINK; + handle->h_local.nl_pid = getpid(); + handle->h_seq_expect = handle->h_seq_next = time(0); + + return handle; +errout: + nl_handle_destroy(handle); + nl_errno(ENOMEM); + return NULL; +} + +/** + * Allocate and initialize new netlink handle. + * + * Allocates and initializes a new netlink handle, the netlink process id + * is set to the local process id which may conflict if multiple handles + * are created, therefore you may have to overwrite it using + * nl_handle_set_pid(). The initial sequence number is initialized to the + * current UNIX time. The default callback (NL_CB_DEFAULT) handlers are + * being used. + * + * @return Newly allocated netlink handle or NULL. + */ +struct nl_handle *nl_handle_alloc(void) +{ + return nl_handle_alloc_nondefault(NL_CB_DEFAULT); +} + +/** + * Destroy netlink handle. + * @arg handle Netlink handle. + */ +void nl_handle_destroy(struct nl_handle *handle) +{ + if (!handle) + return; + + nl_cb_destroy(handle->h_cb); + free(handle); +} + +/** @} */ + +/** + * @name Utilities + * @{ + */ + +/** + * Set socket buffer size of netlink handle. + * @arg handle Netlink handle. + * @arg rxbuf New receive socket buffer size in bytes. + * @arg txbuf New transmit socket buffer size in bytes. + * + * Sets the socket buffer size of a netlink handle to the specified + * values \c rxbuf and \c txbuf. Providing a value of \c 0 assumes a + * good default value. + * + * @note It is not required to call this function prior to nl_connect(). + * @return 0 on sucess or a negative error code. + */ +int nl_set_buffer_size(struct nl_handle *handle, int rxbuf, int txbuf) +{ + int err; + + if (rxbuf <= 0) + rxbuf = 32768; + + if (txbuf <= 0) + txbuf = 32768; + + err = setsockopt(handle->h_fd, SOL_SOCKET, SO_SNDBUF, + &txbuf, sizeof(txbuf)); + if (err < 0) + return nl_error(errno, "setsockopt(SO_SNDBUF) failed"); + + err = setsockopt(handle->h_fd, SOL_SOCKET, SO_RCVBUF, + &rxbuf, sizeof(rxbuf)); + if (err < 0) + return nl_error(errno, "setsockopt(SO_RCVBUF) failed"); + + handle->h_flags |= NL_SOCK_BUFSIZE_SET; + + return 0; +} + +/** + * Enable/disable credential passing on netlink handle. + * @arg handle Netlink handle + * @arg state New state (0 - disabled, 1 - enabled) + */ +int nl_set_passcred(struct nl_handle *handle, int state) +{ + int err; + + err = setsockopt(handle->h_fd, SOL_SOCKET, SO_PASSCRED, + &state, sizeof(state)); + if (err < 0) + return nl_error(errno, "setsockopt(SO_PASSCRED) failed"); + + if (state) + handle->h_flags |= NL_SOCK_PASSCRED; + else + handle->h_flags &= ~NL_SOCK_PASSCRED; + + return 0; +} + +/** + * Join multicast groups. + * @arg handle Netlink handle. + * @arg groups Bitmask of groups to join. + * + * @note Joining of groups must be done prior to connecting/binding + * the socket (nl_connect()). + */ +void nl_join_groups(struct nl_handle *handle, int groups) +{ + handle->h_local.nl_groups |= groups; +} + +#ifndef SOL_NETLINK +#define SOL_NETLINK 270 +#endif + +int nl_join_group(struct nl_handle *handle, int group) +{ + int err; + + err = setsockopt(handle->h_fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, + &group, sizeof(group)); + if (err < 0) + return nl_error(errno, "setsockopt(NETLINK_ADD_MEMBERSHIP) " + "failed"); + + return 0; +} + +static int noop_seq_check(struct nl_msg *msg, void *arg) +{ + return NL_PROCEED; +} + +/** + * Disable sequence number checking. + * @arg handle Netlink handle. + * + * Disables checking of sequence numbers on the netlink handle. This is + * required to allow messages to be processed which were not requested by + * a preceding request message, e.g. netlink events. + */ +void nl_disable_sequence_check(struct nl_handle *handle) +{ + nl_cb_set(nl_handle_get_cb(handle), NL_CB_SEQ_CHECK, + NL_CB_CUSTOM, noop_seq_check, NULL); +} + +/** @} */ + +/** + * @name Acccess Functions + * @{ + */ + +/** + * Get netlink process identifier of netlink handle. + * @arg handle Netlink handle. + * @return Netlink process identifier. + */ +pid_t nl_handle_get_pid(struct nl_handle *handle) +{ + return handle->h_local.nl_pid; +} + +/** + * Set netlink process identifier of netlink handle. + * @arg handle Netlink handle. + * @arg pid New netlink process identifier. + */ +void nl_handle_set_pid(struct nl_handle *handle, pid_t pid) +{ + handle->h_local.nl_pid = pid; +} + +/** + * Get netlink process identifier of peer from netlink handle. + * @arg handle Netlink handle. + * @return Netlink process identifier. + */ +pid_t nl_handle_get_peer_pid(struct nl_handle *handle) +{ + return handle->h_peer.nl_pid; +} + +/** + * Set netlink process identifier of peer in netlink handle. + * @arg handle Netlink handle. + * @arg pid New netlink process identifier. + */ +void nl_handle_set_peer_pid(struct nl_handle *handle, pid_t pid) +{ + handle->h_peer.nl_pid = pid; +} + +/** + * Get file descriptor of netlink handle. + * @arg handle Netlink handle. + * @return File descriptor of netlink socket or -1 if not connected. + */ +int nl_handle_get_fd(struct nl_handle *handle) +{ + return handle->h_fd; +} + +/** + * Get local netlink address of netlink handle. + * @arg handle Netlink handle. + * @return Local netlink address. + */ +struct sockaddr_nl *nl_handle_get_local_addr(struct nl_handle *handle) +{ + return &handle->h_local; +} + +/** + * Get peer netlink address of netlink handle. + * @arg handle Netlink handle. + * @note The peer address is undefined while the socket is unconnected. + * @return Netlink address of the peer. + */ +struct sockaddr_nl *nl_handle_get_peer_addr(struct nl_handle *handle) +{ + return &handle->h_peer; +} + +/** + * Get callback configuration of netlink handle. + * @arg handle Netlink handle. + * @return Currently active callback configuration or NULL if not available. + */ +struct nl_cb *nl_handle_get_cb(struct nl_handle *handle) +{ + return handle->h_cb; +} + +/** @} */ + +/** + * @name Connection Management + * @{ + */ + +/** + * Create and connect netlink socket. + * @arg handle Netlink handle. + * @arg protocol Netlink protocol to use. + * + * Creates a netlink socket using the specified protocol, binds the socket + * and issues a connection attempt. + * + * @return 0 on success or a negative error code. + */ +int nl_connect(struct nl_handle *handle, int protocol) +{ + int err; + socklen_t addrlen; + + handle->h_fd = socket(AF_NETLINK, SOCK_RAW, protocol); + if (handle->h_fd < 0) + return nl_error(1, "socket(AF_NETLINK, ...) failed"); + + if (!(handle->h_flags & NL_SOCK_BUFSIZE_SET)) { + err = nl_set_buffer_size(handle, 0, 0); + if (err < 0) + return err; + } + + err = bind(handle->h_fd, (struct sockaddr*) &handle->h_local, + sizeof(handle->h_local)); + if (err < 0) + return nl_error(1, "bind() failed"); + + addrlen = sizeof(handle->h_local); + err = getsockname(handle->h_fd, (struct sockaddr *) &handle->h_local, + &addrlen); + if (err < 0) + return nl_error(1, "getsockname failed"); + + if (addrlen != sizeof(handle->h_local)) + return nl_error(EADDRNOTAVAIL, "Invalid address length"); + + if (handle->h_local.nl_family != AF_NETLINK) + return nl_error(EPFNOSUPPORT, "Address format not supported"); + + handle->h_proto = protocol; + + return 0; +} + +/** + * Close/Disconnect netlink socket. + * @arg handle Netlink handle + */ +void nl_close(struct nl_handle *handle) +{ + if (handle->h_fd >= 0) { + close(handle->h_fd); + handle->h_fd = -1; + } + + handle->h_proto = 0; +} + +/** @} */ + +/** + * @name Send + * @{ + */ + +/** + * Send raw data over netlink socket. + * @arg handle Netlink handle. + * @arg buf Data buffer. + * @arg size Size of data buffer. + * @return Number of characters written on success or a negative error code. + */ +int nl_sendto(struct nl_handle *handle, void *buf, size_t size) +{ + int ret; + + ret = sendto(handle->h_fd, buf, size, 0, (struct sockaddr *) + &handle->h_peer, sizeof(handle->h_peer)); + if (ret < 0) + return nl_errno(errno); + + return ret; +} + +/** + * Send netlink message with control over sendmsg() message header. + * @arg handle Netlink handle. + * @arg msg Netlink message to be sent. + * @arg hdr Sendmsg() message header. + * @return Number of characters sent on sucess or a negative error code. + */ +int nl_sendmsg(struct nl_handle *handle, struct nl_msg *msg, struct msghdr *hdr) +{ + struct nl_cb *cb; + int ret; + + struct iovec iov = { + .iov_base = (void *) nlmsg_hdr(msg), + .iov_len = nlmsg_hdr(msg)->nlmsg_len, + }; + + hdr->msg_iov = &iov; + hdr->msg_iovlen = 1; + + nlmsg_set_src(msg, &handle->h_local); + + cb = nl_handle_get_cb(handle); + if (cb->cb_set[NL_CB_MSG_OUT]) + if (nl_cb_call(cb, NL_CB_MSG_OUT, msg) != NL_PROCEED) + return 0; + + ret = sendmsg(handle->h_fd, hdr, 0); + if (ret < 0) + return nl_errno(errno); + + return ret; +} + + +/** + * Send netlink message. + * @arg handle Netlink handle + * @arg msg Netlink message to be sent. + * @see nl_sendmsg() + * @return Number of characters sent on success or a negative error code. + */ +int nl_send(struct nl_handle *handle, struct nl_msg *msg) +{ + struct sockaddr_nl *dst; + struct ucred *creds; + + struct msghdr hdr = { + .msg_name = (void *) &handle->h_peer, + .msg_namelen = sizeof(struct sockaddr_nl), + }; + + /* Overwrite destination if specified in the message itself, defaults + * to the peer address of the handle. + */ + dst = nlmsg_get_dst(msg); + if (dst->nl_family == AF_NETLINK) + hdr.msg_name = dst; + + /* Add credentials if present. */ + creds = nlmsg_get_creds(msg); + if (creds != NULL) { + char buf[CMSG_SPACE(sizeof(struct ucred))]; + struct cmsghdr *cmsg; + + hdr.msg_control = buf; + hdr.msg_controllen = sizeof(buf); + + cmsg = CMSG_FIRSTHDR(&hdr); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_CREDENTIALS; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred)); + memcpy(CMSG_DATA(cmsg), creds, sizeof(struct ucred)); + } + + return nl_sendmsg(handle, msg, &hdr); +} + +/** + * Send netlink message and check & extend header values as needed. + * @arg handle Netlink handle. + * @arg msg Netlink message to be sent. + * + * Checks the netlink message \c nlh for completness and extends it + * as required before sending it out. Checked fields include pid, + * sequence nr, and flags. + * + * @see nl_send() + * @return Number of characters sent or a negative error code. + */ +int nl_send_auto_complete(struct nl_handle *handle, struct nl_msg *msg) +{ + struct nlmsghdr *nlh; + + nlh = nlmsg_hdr(msg); + if (nlh->nlmsg_pid == 0) + nlh->nlmsg_pid = handle->h_local.nl_pid; + + if (nlh->nlmsg_seq == 0) + nlh->nlmsg_seq = handle->h_seq_next++; + + nlh->nlmsg_flags |= (NLM_F_REQUEST | NLM_F_ACK); + + if (handle->h_cb->cb_send_ow) + return handle->h_cb->cb_send_ow(handle, msg); + else + return nl_send(handle, msg); +} + +/** + * Send simple netlink message using nl_send_auto_complete() + * @arg handle Netlink handle. + * @arg type Netlink message type. + * @arg flags Netlink message flags. + * @arg buf Data buffer. + * @arg size Size of data buffer. + * + * Builds a netlink message with the specified type and flags and + * appends the specified data as payload to the message. + * + * @see nl_send_auto_complete() + * @return Number of characters sent on success or a negative error code. + */ +int nl_send_simple(struct nl_handle *handle, int type, int flags, void *buf, + size_t size) +{ + int err; + struct nl_msg *msg; + struct nlmsghdr nlh = { + .nlmsg_len = nlmsg_msg_size(0), + .nlmsg_type = type, + .nlmsg_flags = flags, + }; + + msg = nlmsg_build(&nlh); + if (!msg) + return nl_errno(ENOMEM); + + if (buf && size) + nlmsg_append(msg, buf, size, 1); + + err = nl_send_auto_complete(handle, msg); + nlmsg_free(msg); + + return err; +} + +/** @} */ + +/** + * @name Receive + * @{ + */ + +/** + * Receive netlink message from netlink socket. + * @arg handle Netlink handle. + * @arg nla Destination pointer for peer's netlink address. + * @arg buf Destination pointer for message content. + * @arg creds Destination pointer for credentials. + * + * Receives a netlink message, allocates a buffer in \c *buf and + * stores the message content. The peer's netlink address is stored + * in \c *nla. The caller is responsible for freeing the buffer allocated + * in \c *buf if a positive value is returned. Interruped system calls + * are handled by repeating the read. The input buffer size is determined + * by peeking before the actual read is done. + * + * A non-blocking sockets causes the function to return immediately if + * no data is available. + * + * @return Number of octets read, 0 on EOF or a negative error code. + */ +int nl_recv(struct nl_handle *handle, struct sockaddr_nl *nla, + unsigned char **buf, struct ucred **creds) +{ + int n; + int flags = MSG_PEEK; + + struct iovec iov = { + .iov_len = 4096, + }; + + struct msghdr msg = { + .msg_name = (void *) nla, + .msg_namelen = sizeof(sizeof(struct sockaddr_nl)), + .msg_iov = &iov, + .msg_iovlen = 1, + .msg_control = NULL, + .msg_controllen = 0, + .msg_flags = 0, + }; + struct cmsghdr *cmsg; + + iov.iov_base = *buf = calloc(1, iov.iov_len); + + if (handle->h_flags & NL_SOCK_PASSCRED) { + msg.msg_controllen = CMSG_SPACE(sizeof(struct ucred)); + msg.msg_control = calloc(1, msg.msg_controllen); + } +retry: + + if ((n = recvmsg(handle->h_fd, &msg, flags)) <= 0) { + if (!n) + goto abort; + else if (n < 0) { + if (errno == EINTR) + goto retry; + else if (errno == EAGAIN) + goto abort; + else { + free(msg.msg_control); + free(*buf); + return nl_error(errno, "recvmsg failed"); + } + } + } + + if (iov.iov_len < n) { + /* Provided buffer is not long enough, enlarge it + * and try again. */ + iov.iov_len *= 2; + iov.iov_base = *buf = realloc(*buf, iov.iov_len); + goto retry; + } else if (msg.msg_flags & MSG_CTRUNC) { + msg.msg_controllen *= 2; + msg.msg_control = realloc(msg.msg_control, msg.msg_controllen); + goto retry; + } else if (flags != 0) { + /* Buffer is big enough, do the actual reading */ + flags = 0; + goto retry; + } + + if (msg.msg_namelen != sizeof(struct sockaddr_nl)) { + free(msg.msg_control); + free(*buf); + return nl_error(EADDRNOTAVAIL, "socket address size mismatch"); + } + + for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { + if (cmsg->cmsg_level == SOL_SOCKET && + cmsg->cmsg_type == SCM_CREDENTIALS) { + *creds = calloc(1, sizeof(struct ucred)); + memcpy(*creds, CMSG_DATA(cmsg), sizeof(struct ucred)); + break; + } + } + + free(msg.msg_control); + return n; + +abort: + free(msg.msg_control); + free(*buf); + return 0; +} + + +/** + * Receive a set of messages from a netlink socket. + * @arg handle netlink handle + * @arg cb set of callbacks to control the behaviour. + * + * Repeatedly calls nl_recv() and parses the messages as netlink + * messages. Stops reading if one of the callbacks returns + * NL_EXIT or nl_recv returns either 0 or a negative error code. + * + * A non-blocking sockets causes the function to return immediately if + * no data is available. + * + * @return 0 on success or a negative error code from nl_recv(). + */ +int nl_recvmsgs(struct nl_handle *handle, struct nl_cb *cb) +{ + int n, err = 0; + unsigned char *buf = NULL; + struct nlmsghdr *hdr; + struct sockaddr_nl nla = {0}; + struct nl_msg *msg = NULL; + struct ucred *creds = NULL; + +continue_reading: + if (cb->cb_recv_ow) + n = cb->cb_recv_ow(handle, &nla, &buf, &creds); + else + n = nl_recv(handle, &nla, &buf, &creds); + + if (n <= 0) + return n; + + NL_DBG(3, "recvmsgs(%p): Read %d bytes\n", handle, n); + + hdr = (struct nlmsghdr *) buf; + while (nlmsg_ok(hdr, n)) { + NL_DBG(3, "recgmsgs(%p): Processing valid message...\n", + handle); + + nlmsg_free(msg); + msg = nlmsg_convert(hdr); + if (!msg) { + err = nl_errno(ENOMEM); + goto out; + } + + nlmsg_set_proto(msg, handle->h_proto); + nlmsg_set_src(msg, &nla); + if (creds) + nlmsg_set_creds(msg, creds); + + /* Raw callback is the first, it gives the most control + * to the user and he can do his very own parsing. */ + if (cb->cb_set[NL_CB_MSG_IN]) { + err = nl_cb_call(cb, NL_CB_MSG_IN, msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } + + /* Sequence number checking. The check may be done by + * the user, otherwise a very simple check is applied + * enforcing strict ordering */ + if (cb->cb_set[NL_CB_SEQ_CHECK]) { + err = nl_cb_call(cb, NL_CB_SEQ_CHECK, msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } else if (hdr->nlmsg_seq != handle->h_seq_expect) { + if (cb->cb_set[NL_CB_INVALID]) { + err = nl_cb_call(cb, NL_CB_INVALID, msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } else + goto out; + } + + if (hdr->nlmsg_type == NLMSG_DONE || + hdr->nlmsg_type == NLMSG_ERROR || + hdr->nlmsg_type == NLMSG_NOOP || + hdr->nlmsg_type == NLMSG_OVERRUN) { + /* We can't check for !NLM_F_MULTI since some netlink + * users in the kernel are broken. */ + handle->h_seq_expect++; + NL_DBG(3, "recvmsgs(%p): Increased expected " \ + "sequence number to %d\n", + handle, handle->h_seq_expect); + } + + /* Other side wishes to see an ack for this message */ + if (hdr->nlmsg_flags & NLM_F_ACK) { + if (cb->cb_set[NL_CB_SEND_ACK]) { + err = nl_cb_call(cb, NL_CB_SEND_ACK, msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } else { + /* FIXME: implement */ + } + } + + /* messages terminates a multpart message, this is + * usually the end of a message and therefore we slip + * out of the loop by default. the user may overrule + * this action by skipping this packet. */ + if (hdr->nlmsg_type == NLMSG_DONE) { + if (cb->cb_set[NL_CB_FINISH]) { + err = nl_cb_call(cb, NL_CB_FINISH, msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } + err = 0; + goto out; + } + + /* Message to be ignored, the default action is to + * skip this message if no callback is specified. The + * user may overrule this action by returning + * NL_PROCEED. */ + else if (hdr->nlmsg_type == NLMSG_NOOP) { + if (cb->cb_set[NL_CB_SKIPPED]) { + err = nl_cb_call(cb, NL_CB_SKIPPED, msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } else + goto skip; + } + + /* Data got lost, report back to user. The default action is to + * quit parsing. The user may overrule this action by retuning + * NL_SKIP or NL_PROCEED (dangerous) */ + else if (hdr->nlmsg_type == NLMSG_OVERRUN) { + if (cb->cb_set[NL_CB_OVERRUN]) { + err = nl_cb_call(cb, NL_CB_OVERRUN, msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } else + goto out; + } + + /* Message carries a nlmsgerr */ + else if (hdr->nlmsg_type == NLMSG_ERROR) { + struct nlmsgerr *e = nlmsg_data(hdr); + + if (hdr->nlmsg_len < nlmsg_msg_size(sizeof(*e))) { + /* Truncated error message, the default action + * is to stop parsing. The user may overrule + * this action by returning NL_SKIP or + * NL_PROCEED (dangerous) */ + if (cb->cb_set[NL_CB_INVALID]) { + err = nl_cb_call(cb, NL_CB_INVALID, + msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } else + goto out; + } else if (e->error) { + /* Error message reported back from kernel. */ + if (cb->cb_err) { + err = cb->cb_err(&nla, e, + cb->cb_err_arg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) { + nl_error(-e->error, + "Netlink Error"); + err = e->error; + goto out; + } + } else { + nl_error(-e->error, "Netlink Error"); + err = e->error; + goto out; + } + } else if (cb->cb_set[NL_CB_ACK]) { + /* ACK */ + err = nl_cb_call(cb, NL_CB_ACK, msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } + } else { + /* Valid message (not checking for MULTIPART bit to + * get along with broken kernels. NL_SKIP has no + * effect on this. */ + if (cb->cb_set[NL_CB_VALID]) { + err = nl_cb_call(cb, NL_CB_VALID, msg); + if (err == NL_SKIP) + goto skip; + else if (err == NL_EXIT || err < 0) + goto out; + } + } +skip: + hdr = nlmsg_next(hdr, &n); + } + + nlmsg_free(msg); + free(buf); + free(creds); + buf = NULL; + msg = NULL; + creds = NULL; + + /* Multipart message not yet complete, continue reading */ + goto continue_reading; + +out: + nlmsg_free(msg); + free(buf); + free(creds); + + return err; +} + +/** + * Receive a set of message from a netlink socket using handlers in nl_handle. + * @arg handle netlink handle + * + * Calls nl_recvmsgs() with the handlers configured in the netlink handle. + */ +int nl_recvmsgs_def(struct nl_handle *handle) +{ + if (handle->h_cb->cb_recvmsgs_ow) + return handle->h_cb->cb_recvmsgs_ow(handle, handle->h_cb); + else + return nl_recvmsgs(handle, handle->h_cb); +} + +static int ack_wait_handler(struct nl_msg *msg, void *arg) +{ + return NL_EXIT; +} + +/** + * Wait for ACK. + * @arg handle netlink handle + * @pre The netlink socket must be in blocking state. + * + * Waits until an ACK is received for the latest not yet acknowledged + * netlink message. + */ +int nl_wait_for_ack(struct nl_handle *handle) +{ + int err; + struct nl_cb *cb = nl_cb_clone(nl_handle_get_cb(handle)); + + nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, NULL); + + err = nl_recvmsgs(handle, cb); + nl_cb_destroy(cb); + + return err; +} + +/** @} */ + +/** + * @name Netlink Family Translations + * @{ + */ + +static struct trans_tbl nlfamilies[] = { + __ADD(NETLINK_ROUTE,route) + __ADD(NETLINK_W1,w1) + __ADD(NETLINK_USERSOCK,usersock) + __ADD(NETLINK_FIREWALL,firewall) + __ADD(NETLINK_INET_DIAG,inetdiag) + __ADD(NETLINK_NFLOG,nflog) + __ADD(NETLINK_XFRM,xfrm) + __ADD(NETLINK_SELINUX,selinux) + __ADD(NETLINK_ISCSI,iscsi) + __ADD(NETLINK_AUDIT,audit) + __ADD(NETLINK_FIB_LOOKUP,fib_lookup) + __ADD(NETLINK_CONNECTOR,connector) + __ADD(NETLINK_NETFILTER,netfilter) + __ADD(NETLINK_IP6_FW,ip6_fw) + __ADD(NETLINK_DNRTMSG,dnrtmsg) + __ADD(NETLINK_KOBJECT_UEVENT,kobject_uevent) + __ADD(NETLINK_GENERIC,generic) +}; + +/** + * Convert netlink family to character string. + * @arg family Netlink family. + * @arg buf Destination buffer. + * @arg size Size of destination buffer. + * + * Converts a netlink family to a character string and stores it in + * the specified destination buffer. + * + * @return The destination buffer or the family encoded in hexidecimal + * form if no match was found. + */ +char * nl_nlfamily2str(int family, char *buf, size_t size) +{ + return __type2str(family, buf, size, nlfamilies, + ARRAY_SIZE(nlfamilies)); +} + +/** + * Convert character string to netlink family. + * @arg name Name of netlink family. + * + * Converts the provided character string specifying a netlink + * family to the corresponding numeric value. + * + * @return Numeric netlink family or a negative value if no match was found. + */ +int nl_str2nlfamily(const char *name) +{ + return __str2type(name, nlfamilies, ARRAY_SIZE(nlfamilies)); +} + +/** @} */ +/** @} */ diff --git a/lib/object.c b/lib/object.c new file mode 100644 index 0000000..80f4047 --- /dev/null +++ b/lib/object.c @@ -0,0 +1,285 @@ +/* + * lib/object.c Generic Cacheable Object + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup cache + * @defgroup object Cacheable Object + * @{ + */ + +#include +#include +#include +#include +#include + +static inline struct nl_cache_ops *obj_ops(struct nl_object *obj) +{ + if (!obj->ce_ops) + BUG(); + + return obj->ce_ops; +} + +/** + * @name Object Creation/Deletion + * @{ + */ + +/** + * Allocate a cacheable object + * @arg size size of object + * @return The new object or NULL. + */ +struct nl_object *nl_object_alloc(size_t size) +{ + struct nl_object *new; + + if (size < sizeof(*new)) + BUG(); + + new = calloc(1, size); + if (!new) { + nl_errno(ENOMEM); + return NULL; + } + + new->ce_refcnt = 1; + nl_init_list_head(&new->ce_list); + + return new; +} + +/** + * Allocate a new object of kind specified by the operations handle + * @arg ops cache operations handle + * @return The new object or NULL + */ +struct nl_object *nl_object_alloc_from_ops(struct nl_cache_ops *ops) +{ + struct nl_object *new; + + new = nl_object_alloc(ops->co_size); + if (new) { + new->ce_ops = ops; + if (ops->co_constructor) + ops->co_constructor(new); + } + + return new; +} + +/** + * Allocate a new object of kind specified by the name + * @arg kind name of object type + * @return The new object or nULL + */ +struct nl_object *nl_object_alloc_name(const char *kind) +{ + struct nl_cache_ops *ops; + + ops = nl_cache_mngt_lookup(kind); + if (!ops) { + nl_error(ENOENT, "Unable to lookup cache kind \"%s\"", kind); + return NULL; + } + + return nl_object_alloc_from_ops(ops); +} + +struct nl_derived_object { + NLHDR_COMMON + char data; +}; + +/** + * Allocate a new object and copy all data from an existing object + * @arg obj object to inherite data from + * @return The new object or NULL. + */ +struct nl_object *nl_object_clone(struct nl_object *obj) +{ + struct nl_object *new; + struct nl_cache_ops *ops = obj_ops(obj); + int doff = offsetof(struct nl_derived_object, data); + int size; + + new = nl_object_alloc(ops->co_size); + if (!new) + return NULL; + + size = ops->co_size - doff; + if (size < 0) + BUG(); + + new->ce_cache = obj->ce_cache; + new->ce_ops = obj->ce_ops; + new->ce_msgtype = obj->ce_msgtype; + if (ops->co_free_data) { + new->ce_dataref = obj; + nl_object_get(obj); + } + + if (size) + memcpy((void *)new + doff, (void *)obj + doff, size); + + return new; +} + +/** + * Free a cacheable object + * @arg obj object to free + * + * @return 0 or a negative error code. + */ +void nl_object_free(struct nl_object *obj) +{ + struct nl_cache_ops *ops = obj_ops(obj); + + if (obj->ce_refcnt > 0) + NL_DBG(1, "Warning: Freeing object in used...\n"); + + if (obj->ce_dataref) + nl_object_put(obj->ce_dataref); + else if (ops->co_free_data) + ops->co_free_data(obj); + + free(obj); +} + +/** @} */ + +/** + * @name Reference Management + * @{ + */ + +/** + * Acquire a reference on a object + * @arg obj object to acquire reference from + */ +void nl_object_get(struct nl_object *obj) +{ + obj->ce_refcnt++; +} + +/** + * Release a reference from an object + * @arg obj object to release reference from + */ +void nl_object_put(struct nl_object *obj) +{ + if (!obj) + return; + + obj->ce_refcnt--; + + if (obj->ce_refcnt < 0) + BUG(); + + if (obj->ce_refcnt <= 0) + nl_object_free(obj); +} + +/** + * Check whether this object is used by multiple users + * @arg obj object to check + * @return true or false + */ +int nl_object_shared(struct nl_object *obj) +{ + return obj->ce_refcnt > 1; +} + +/** @} */ + +/** + * @name Utillities + * @{ + */ + +/** + * Dump this object according to the specified parameters + * @arg obj object to dump + * @arg params dumping parameters + */ +void nl_object_dump(struct nl_object *obj, struct nl_dump_params *params) +{ + dump_from_ops(obj, params); +} + +/** + * Match a filter against an object + * @arg obj object to check + * @arg filter filter object + * + * @return 0 if the object matches the filter or non-zero + * if no filter procedure is available or if the + * filter does not match. + */ +int nl_object_match(struct nl_object *obj, struct nl_object *filter) +{ + struct nl_cache_ops *ops = obj->ce_ops; + + if (ops == filter->ce_ops && + ops->co_filter && !ops->co_filter(obj, filter)) + return 1; + else + return 0; +} + +/** @} */ + +/** + * @name Access Functions + * @{ + */ + +/** + * Get reference count of object + * @arg obj object handle + */ +int nl_object_get_refcnt(struct nl_object *obj) +{ + return obj->ce_refcnt; +} + +/** + * Get cache operations of object + * @arg obj object handle + */ +struct nl_cache_ops *nl_object_get_ops(struct nl_object *obj) +{ + return obj->ce_ops; +} + +/** + * Get cache this object is in + * @arg obj object handle + * @return cache handle or NULL if object is not associated to a cache + */ +struct nl_cache *nl_object_get_cache(struct nl_object *obj) +{ + return obj->ce_cache; +} + +/** + * Get the private data of object + * @arg obj object handle + */ +inline void *nl_object_priv(struct nl_object *obj) +{ + return obj; +} + +/** @} */ + +/** @} */ diff --git a/lib/route/addr.c b/lib/route/addr.c new file mode 100644 index 0000000..888daf1 --- /dev/null +++ b/lib/route/addr.c @@ -0,0 +1,1278 @@ +/* + * lib/route/addr.c Addresses + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + * Baruch Even , + * Mediatrix Telecom, inc. + */ + +/** + * @ingroup rtnl + * @defgroup rtaddr Addresses + * @brief + * + * @par 1) Address Addition + * @code + * // Allocate an empty address object to be filled out with the attributes + * // of the new address. + * struct rtnl_addr *addr = rtnl_addr_alloc(); + * + * // Fill out the mandatory attributes of the new address. Setting the + * // local address will automatically set the address family and the + * // prefix length to the correct values. + * rtnl_addr_set_ifindex(addr, ifindex); + * rtnl_addr_set_local(addr, local_addr); + * + * // The label of the address can be specified, currently only supported + * // by IPv4 and DECnet. + * rtnl_addr_set_label(addr, "mylabel"); + * + * // The peer address can be specified if necessary, in either case a peer + * // address will be sent to the kernel in order to fullfil the interface + * // requirements. If none is set, it will equal the local address. + * // Note: Real peer addresses are only supported by IPv4 for now. + * rtnl_addr_set_peer(addr, peer_addr); + * + * // In case you want to have the address have a scope other than global + * // it may be overwritten using rtnl_addr_set_scope(). The scope currently + * // cannot be set for IPv6 addresses. + * rtnl_addr_set_scope(addr, rtnl_str2scope("site")); + * + * // Broadcast and anycast address may be specified using the relevant + * // functions, the address family will be verified if one of the other + * // addresses has been set already. Currently only works for IPv4. + * rtnl_addr_set_broadcast(addr, broadcast_addr); + * rtnl_addr_set_anycast(addr, anycast_addr); + * + * // Build the netlink message and send it to the kernel, the operation will + * // block until the operation has been completed. Alternatively the required + * // netlink message can be built using rtnl_addr_build_add_request() to be + * // sent out using nl_send_auto_complete(). + * rtnl_addr_add(handle, addr, 0); + * + * // Free the memory + * rtnl_addr_put(addr); + * @endcode + * + * @par 2) Address Deletion + * @code + * // Allocate an empty address object to be filled out with the attributes + * // matching the address to be deleted. Alternatively a fully equipped + * // address object out of a cache can be used instead. + * struct rtnl_addr *addr = rtnl_addr_alloc(); + * + * // The only mandatory parameter besides the address family is the interface + * // index the address is on, i.e. leaving out all other parameters will + * // result in all addresses of the specified address family interface tuple + * // to be deleted. + * rtnl_addr_set_ifindex(addr, ifindex); + * + * // Specyfing the address family manually is only required if neither the + * // local nor peer address have been specified. + * rtnl_addr_set_family(addr, AF_INET); + * + * // Specyfing the local address is optional but the best choice to delete + * // specific addresses. + * rtnl_addr_set_local(addr, local_addr); + * + * // The label of the address can be specified, currently only supported + * // by IPv4 and DECnet. + * rtnl_addr_set_label(addr, "mylabel"); + * + * // The peer address can be specified if necessary, in either case a peer + * // address will be sent to the kernel in order to fullfil the interface + * // requirements. If none is set, it will equal the local address. + * // Note: Real peer addresses are only supported by IPv4 for now. + * rtnl_addr_set_peer(addr, peer_addr); + * + * // Build the netlink message and send it to the kernel, the operation will + * // block until the operation has been completed. Alternatively the required + * // netlink message can be built using rtnl_addr_build_delete_request() + * // to be sent out using nl_send_auto_complete(). + * rtnl_addr_delete(handle, addr, 0); + * + * // Free the memory + * rtnl_addr_put(addr); + * @endcode + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define ADDR_ATTR_FAMILY 0x0001 +#define ADDR_ATTR_PREFIXLEN 0x0002 +#define ADDR_ATTR_FLAGS 0x0004 +#define ADDR_ATTR_SCOPE 0x0008 +#define ADDR_ATTR_IFINDEX 0x0010 +#define ADDR_ATTR_LABEL 0x0020 +#define ADDR_ATTR_CACHEINFO 0x0040 +#define ADDR_ATTR_PEER 0x0080 +#define ADDR_ATTR_LOCAL 0x0100 +#define ADDR_ATTR_BROADCAST 0x0200 +#define ADDR_ATTR_ANYCAST 0x0400 +#define ADDR_ATTR_MULTICAST 0x0800 + +static struct nl_cache_ops rtnl_addr_ops; +/** @endcond */ + +static void addr_free_data(struct nl_object *obj) +{ + struct rtnl_addr *addr = nl_object_priv(obj); + + if (!addr) + return; + + nl_addr_put(addr->a_peer); + nl_addr_put(addr->a_local); + nl_addr_put(addr->a_bcast); + nl_addr_put(addr->a_anycast); + nl_addr_put(addr->a_multicast); +} + +static struct nla_policy addr_policy[IFA_MAX+1] = { + [IFA_LABEL] = { .type = NLA_STRING, + .maxlen = IFNAMSIZ }, + [IFA_CACHEINFO] = { .minlen = sizeof(struct ifa_cacheinfo) }, +}; + +static int addr_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *nlh, + void *arg) +{ + struct rtnl_addr *addr; + struct nl_parser_param *pp = arg; + struct ifaddrmsg *ifa; + struct nlattr *tb[IFA_MAX+1]; + int err = -ENOMEM, peer_prefix = 0; + + addr = rtnl_addr_alloc(); + if (!addr) { + err = nl_errno(ENOMEM); + goto errout; + } + addr->ce_msgtype = nlh->nlmsg_type; + + err = nlmsg_parse(nlh, sizeof(*ifa), tb, IFA_MAX, addr_policy); + if (err < 0) + goto errout_free; + + ifa = nlmsg_data(nlh); + addr->a_family = ifa->ifa_family; + addr->a_prefixlen = ifa->ifa_prefixlen; + addr->a_flags = ifa->ifa_flags; + addr->a_scope = ifa->ifa_scope; + addr->a_ifindex = ifa->ifa_index; + + addr->a_mask = (ADDR_ATTR_FAMILY | ADDR_ATTR_PREFIXLEN | + ADDR_ATTR_FLAGS | ADDR_ATTR_SCOPE | ADDR_ATTR_IFINDEX); + + if (tb[IFA_LABEL]) { + nla_strlcpy(addr->a_label, tb[IFA_LABEL], IFNAMSIZ); + addr->a_mask |= ADDR_ATTR_LABEL; + } + + if (tb[IFA_CACHEINFO]) { + struct ifa_cacheinfo *ca; + + ca = nla_data(tb[IFA_CACHEINFO]); + addr->a_cacheinfo.aci_prefered = ca->ifa_prefered; + addr->a_cacheinfo.aci_valid = ca->ifa_valid; + addr->a_cacheinfo.aci_cstamp = ca->cstamp; + addr->a_cacheinfo.aci_tstamp = ca->tstamp; + addr->a_mask |= ADDR_ATTR_CACHEINFO; + } + + if (tb[IFA_LOCAL]) { + addr->a_local = nla_get_addr(tb[IFA_LOCAL], addr->a_family); + if (!addr->a_local) + goto errout_free; + addr->a_mask |= ADDR_ATTR_LOCAL; + } + + if (tb[IFA_ADDRESS]) { + struct nl_addr *a; + + a = nla_get_addr(tb[IFA_ADDRESS], addr->a_family); + if (!a) + goto errout_free; + + /* IPv6 sends the local address as IFA_ADDRESS with + * no IFA_LOCAL, IPv4 sends both IFA_LOCAL and IFA_ADDRESS + * with IFA_ADDRESS being the peer address if they differ */ + if (!tb[IFA_LOCAL] || !nl_addr_cmp(a, addr->a_local)) { + nl_addr_put(addr->a_local); + addr->a_local = a; + addr->a_mask |= ADDR_ATTR_LOCAL; + } else { + addr->a_peer = a; + addr->a_mask |= ADDR_ATTR_PEER; + peer_prefix = 1; + } + } + + nl_addr_set_prefixlen(peer_prefix ? addr->a_peer : addr->a_local, + addr->a_prefixlen); + + if (tb[IFA_BROADCAST]) { + addr->a_bcast = nla_get_addr(tb[IFA_BROADCAST], addr->a_family); + if (!addr->a_bcast) + goto errout_free; + + addr->a_mask |= ADDR_ATTR_BROADCAST; + } + + if (tb[IFA_ANYCAST]) { + addr->a_anycast = nla_get_addr(tb[IFA_ANYCAST], addr->a_family); + if (!addr->a_anycast) + goto errout_free; + + addr->a_mask |= ADDR_ATTR_ANYCAST; + } + + if (tb[IFA_MULTICAST]) { + addr->a_multicast = nla_get_addr(tb[IFA_MULTICAST], + addr->a_family); + if (!addr->a_multicast) + goto errout_free; + + addr->a_mask |= ADDR_ATTR_MULTICAST; + } + + err = pp->pp_cb((struct nl_object *) addr, pp); + if (err < 0) + goto errout_free; + + return P_ACCEPT; + +errout_free: + rtnl_addr_free(addr); +errout: + return err; +} + +static int addr_request_update(struct nl_cache *cache, struct nl_handle *handle) +{ + return nl_rtgen_request(handle, RTM_GETADDR, AF_UNSPEC, NLM_F_DUMP); +} + +static int addr_dump_brief(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_addr *addr = (struct rtnl_addr *) obj; + struct nl_cache *link_cache; + char buf[128]; + + link_cache = nl_cache_mngt_require("route/link"); + + if (addr->a_mask & ADDR_ATTR_LOCAL) + dp_dump(p, "%s", + nl_addr2str(addr->a_local, buf, sizeof(buf))); + else + dp_dump(p, "none"); + + if (addr->a_mask & ADDR_ATTR_PEER) + dp_dump(p, " peer %s", + nl_addr2str(addr->a_peer, buf, sizeof(buf))); + + dp_dump(p, " %s ", nl_af2str(addr->a_family, buf, sizeof(buf))); + + if (link_cache) + dp_dump(p, "dev %s ", + rtnl_link_i2name(link_cache, addr->a_ifindex, + buf, sizeof(buf))); + else + dp_dump(p, "dev %d ", addr->a_ifindex); + + dp_dump(p, "scope %s", + rtnl_scope2str(addr->a_scope, buf, sizeof(buf))); + + rtnl_addr_flags2str(addr->a_flags, buf, sizeof(buf)); + if (buf[0]) + dp_dump(p, " <%s>", buf); + + dp_dump(p, "\n"); + + return 1; +} + +static int addr_dump_full(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_addr *addr = (struct rtnl_addr *) obj; + int line = addr_dump_brief(obj, p); + char buf[128]; + + if (addr->a_mask & (ADDR_ATTR_LABEL | ADDR_ATTR_BROADCAST | + ADDR_ATTR_ANYCAST | ADDR_ATTR_MULTICAST)) { + dp_dump_line(p, line++, " "); + + if (addr->a_mask & ADDR_ATTR_LABEL) + dp_dump(p, " label %s", addr->a_label); + + if (addr->a_mask & ADDR_ATTR_BROADCAST) + dp_dump(p, " broadcast %s", + nl_addr2str(addr->a_bcast, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_ANYCAST) + dp_dump(p, " anycast %s", + nl_addr2str(addr->a_anycast, buf, + sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_MULTICAST) + dp_dump(p, " multicast %s", + nl_addr2str(addr->a_multicast, buf, + sizeof(buf))); + + dp_dump(p, "\n"); + } + + if (addr->a_mask & ADDR_ATTR_CACHEINFO) { + struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo; + + dp_dump_line(p, line++, " valid-lifetime %s", + ci->aci_valid == 0xFFFFFFFFU ? "forever" : + nl_msec2str(ci->aci_valid * 1000, + buf, sizeof(buf))); + + dp_dump(p, " preferred-lifetime %s\n", + ci->aci_prefered == 0xFFFFFFFFU ? "forever" : + nl_msec2str(ci->aci_prefered * 1000, + buf, sizeof(buf))); + + dp_dump_line(p, line++, " created boot-time+%s ", + nl_msec2str(addr->a_cacheinfo.aci_cstamp * 10, + buf, sizeof(buf))); + + dp_dump(p, "last-updated boot-time+%s\n", + nl_msec2str(addr->a_cacheinfo.aci_tstamp * 10, + buf, sizeof(buf))); + } + + return line; +} + +static int addr_dump_stats(struct nl_object *obj, struct nl_dump_params *p) +{ + return addr_dump_full(obj, p); +} + +static int addr_dump_xml(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_addr *addr = (struct rtnl_addr *) obj; + struct nl_cache *link_cache; + char buf[128]; + int line = 0; + + dp_dump_line(p, line++, "
\n"); + dp_dump_line(p, line++, " %s\n", + nl_af2str(addr->a_family, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_LOCAL) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(addr->a_local, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_PEER) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(addr->a_peer, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_BROADCAST) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(addr->a_bcast, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_ANYCAST) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(addr->a_anycast, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_MULTICAST) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(addr->a_multicast, buf, + sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_PREFIXLEN) + dp_dump_line(p, line++, " %u\n", + addr->a_prefixlen); + link_cache = nl_cache_mngt_require("route/link"); + + if (link_cache) + dp_dump_line(p, line++, " %s\n", + rtnl_link_i2name(link_cache, addr->a_ifindex, + buf, sizeof(buf))); + else + dp_dump_line(p, line++, " %u\n", + addr->a_ifindex); + + if (addr->a_mask & ADDR_ATTR_SCOPE) + dp_dump_line(p, line++, " %s\n", + rtnl_scope2str(addr->a_scope, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_LABEL) + dp_dump_line(p, line++, " \n", addr->a_label); + + rtnl_addr_flags2str(addr->a_flags, buf, sizeof(buf)); + if (buf[0]) + dp_dump_line(p, line++, " %s\n", buf); + + if (addr->a_mask & ADDR_ATTR_CACHEINFO) { + struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo; + + dp_dump_line(p, line++, " \n"); + + dp_dump_line(p, line++, " %s\n", + ci->aci_valid == 0xFFFFFFFFU ? "forever" : + nl_msec2str(ci->aci_valid * 1000, + buf, sizeof(buf))); + + dp_dump_line(p, line++, " %s\n", + ci->aci_prefered == 0xFFFFFFFFU ? "forever" : + nl_msec2str(ci->aci_prefered * 1000, + buf, sizeof(buf))); + + dp_dump_line(p, line++, " %s\n", + nl_msec2str(addr->a_cacheinfo.aci_cstamp * 10, + buf, sizeof(buf))); + + dp_dump_line(p, line++, " %s\n", + nl_msec2str(addr->a_cacheinfo.aci_tstamp * 10, + buf, sizeof(buf))); + + dp_dump_line(p, line++, " \n"); + } + + dp_dump_line(p, line++, "
\n"); + + return line; +} + +static int addr_dump_env(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_addr *addr = (struct rtnl_addr *) obj; + struct nl_cache *link_cache; + char buf[128]; + int line = 0; + + dp_dump_line(p, line++, "ADDR_FAMILY=%s\n", + nl_af2str(addr->a_family, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_LOCAL) + dp_dump_line(p, line++, "ADDR_LOCAL=%s\n", + nl_addr2str(addr->a_local, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_PEER) + dp_dump_line(p, line++, "ADDR_PEER=%s\n", + nl_addr2str(addr->a_peer, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_BROADCAST) + dp_dump_line(p, line++, "ADDR_BROADCAST=%s\n", + nl_addr2str(addr->a_bcast, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_ANYCAST) + dp_dump_line(p, line++, "ADDR_ANYCAST=%s\n", + nl_addr2str(addr->a_anycast, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_MULTICAST) + dp_dump_line(p, line++, "ADDR_MULTICAST=%s\n", + nl_addr2str(addr->a_multicast, buf, + sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_PREFIXLEN) + dp_dump_line(p, line++, "ADDR_PREFIXLEN=%u\n", + addr->a_prefixlen); + link_cache = nl_cache_mngt_require("route/link"); + + dp_dump_line(p, line++, "ADDR_IFINDEX=%u\n", addr->a_ifindex); + if (link_cache) + dp_dump_line(p, line++, "ADDR_IFNAME=%s\n", + rtnl_link_i2name(link_cache, addr->a_ifindex, + buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_SCOPE) + dp_dump_line(p, line++, "ADDR_SCOPE=%s\n", + rtnl_scope2str(addr->a_scope, buf, sizeof(buf))); + + if (addr->a_mask & ADDR_ATTR_LABEL) + dp_dump_line(p, line++, "ADDR_LABEL=%s\n", addr->a_label); + + rtnl_addr_flags2str(addr->a_flags, buf, sizeof(buf)); + if (buf[0]) + dp_dump_line(p, line++, "ADDR_FLAGS=%s\n", buf); + + if (addr->a_mask & ADDR_ATTR_CACHEINFO) { + struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo; + + dp_dump_line(p, line++, "ADDR_CACHEINFO_VALID=%s\n", + ci->aci_valid == 0xFFFFFFFFU ? "forever" : + nl_msec2str(ci->aci_valid * 1000, + buf, sizeof(buf))); + + dp_dump_line(p, line++, "ADDR_CACHEINFO_PREFERED=%s\n", + ci->aci_prefered == 0xFFFFFFFFU ? "forever" : + nl_msec2str(ci->aci_prefered * 1000, + buf, sizeof(buf))); + + dp_dump_line(p, line++, "ADDR_CACHEINFO_CREATED=%s\n", + nl_msec2str(addr->a_cacheinfo.aci_cstamp * 10, + buf, sizeof(buf))); + + dp_dump_line(p, line++, "ADDR_CACHEINFO_LASTUPDATE=%s\n", + nl_msec2str(addr->a_cacheinfo.aci_tstamp * 10, + buf, sizeof(buf))); + } + + return line; +} + +static int addr_filter(struct nl_object *obj, struct nl_object *filter) +{ + struct rtnl_addr *o = (struct rtnl_addr *) obj; + struct rtnl_addr *f = (struct rtnl_addr *) filter; + +#define REQ(F) (f->a_mask & ADDR_ATTR_##F) +#define AVAIL(F) (o->a_mask & ADDR_ATTR_##F) +#define _O(F, EXPR) (REQ(F) && (!AVAIL(F) || (EXPR))) +#define _C(F, N) (REQ(F) && (!AVAIL(F) || (o->N != f->N))) + if (_C(IFINDEX, a_ifindex) || + _C(FAMILY, a_family) || + _C(SCOPE, a_scope) || + _O(FLAGS, f->a_flags ^ (o->a_flags & f->a_flag_mask)) || + _O(LABEL, strcmp(o->a_label, f->a_label)) || + _O(PEER, nl_addr_cmp(o->a_peer, f->a_peer)) || + _O(LOCAL, nl_addr_cmp(o->a_local, f->a_local)) || + _O(ANYCAST, nl_addr_cmp(o->a_anycast, f->a_anycast)) || + _O(MULTICAST, nl_addr_cmp(o->a_multicast, f->a_multicast)) || + _O(BROADCAST, nl_addr_cmp(o->a_bcast, f->a_bcast))) + return 0; +#undef REQ +#undef AVAIL +#undef _O +#undef _C + + return 1; +} + +/** + * @name Address Object Creation/Deletion + * @{ + */ + +/** + * Allocate and initialize a new address object + * @note Free the memory after usage using rtnl_addr_put() or rtnl_addr_free(). + * @return Newly allocated address object or NULL if an error occured. + */ +struct rtnl_addr *rtnl_addr_alloc(void) +{ + return (struct rtnl_addr *) nl_object_alloc_from_ops(&rtnl_addr_ops); +} + +/** + * Give back a reference on a address object. + * @arg addr Address object to be given back. + * + * Decrements the reference counter and frees the object if the + * last reference has been released. + */ +void rtnl_addr_put(struct rtnl_addr *addr) +{ + nl_object_put((struct nl_object *) addr); +} + +/** + * Free an address object + * @arg addr Address object to be freed. + * + * @note Always use rtnl_addr_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void rtnl_addr_free(struct rtnl_addr *addr) +{ + nl_object_free((struct nl_object *) addr); +} + +/** @} */ + +/** + * @name Address Cache Management + * @{ + */ + +/** + * Allocate address cache and fill in all configured addresses + * @arg handle Netlink handle. + * + * Allocates a new address cache, initializes it properly and updates it + * to include all addresses currently configured in the kernel. + * + * @note Free the memory after usage. + * @return Newly allocated cache or NULL if an error occured. + */ +struct nl_cache *rtnl_addr_alloc_cache(struct nl_handle *handle) +{ + struct nl_cache *cache; + + cache = nl_cache_alloc_from_ops(&rtnl_addr_ops); + if (!cache) + return NULL; + + if (nl_cache_update(handle, cache) < 0) { + nl_cache_free(cache); + return NULL; + } + + return cache; +} + +/** @} */ + +static struct nl_msg *build_addr_msg(struct rtnl_addr *tmpl, int cmd, int flags) +{ + struct nl_msg *msg; + struct ifaddrmsg am = { + .ifa_family = tmpl->a_family, + .ifa_index = tmpl->a_ifindex, + .ifa_prefixlen = tmpl->a_prefixlen, + }; + + if (tmpl->a_mask & ADDR_ATTR_SCOPE) + am.ifa_scope = tmpl->a_scope; + else { + /* compatibility hack */ + if (tmpl->a_family == AF_INET && + tmpl->a_mask & ADDR_ATTR_LOCAL && + *((char *) nl_addr_get_binary_addr(tmpl->a_local)) == 127) + am.ifa_scope = RT_SCOPE_HOST; + else + am.ifa_scope = RT_SCOPE_UNIVERSE; + } + + msg = nlmsg_build_simple(cmd, flags); + if (!msg) + goto nla_put_failure; + + if (nlmsg_append(msg, &am, sizeof(am), 1) < 0) + goto nla_put_failure; + + if (tmpl->a_mask & ADDR_ATTR_LOCAL) + NLA_PUT_ADDR(msg, IFA_LOCAL, tmpl->a_local); + + if (tmpl->a_mask & ADDR_ATTR_PEER) + NLA_PUT_ADDR(msg, IFA_ADDRESS, tmpl->a_peer); + else + NLA_PUT_ADDR(msg, IFA_ADDRESS, tmpl->a_local); + + if (tmpl->a_mask & ADDR_ATTR_LABEL) + NLA_PUT_STRING(msg, IFA_LABEL, tmpl->a_label); + + if (tmpl->a_mask & ADDR_ATTR_BROADCAST) + NLA_PUT_ADDR(msg, IFA_BROADCAST, tmpl->a_bcast); + + if (tmpl->a_mask & ADDR_ATTR_ANYCAST) + NLA_PUT_ADDR(msg, IFA_ANYCAST, tmpl->a_anycast); + + return msg; + +nla_put_failure: + nlmsg_free(msg); + return NULL; +} + +/** + * @name Address Addition + * @{ + */ + +/** + * Build netlink request message to request addition of new address + * @arg addr Address object representing the new address. + * @arg flags Additional netlink message flags. + * + * Builds a new netlink message requesting the addition of a new + * address. The netlink message header isn't fully equipped with + * all relevant fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. + * + * Minimal required attributes: + * - interface index (rtnl_addr_set_ifindex()) + * - local address (rtnl_addr_set_local()) + * + * The scope will default to universe except for loopback addresses in + * which case a host scope is used if not specified otherwise. + * + * @note Free the memory after usage using nlmsg_free(). + * @return Newly allocated netlink message or NULL if an error occured. + */ +struct nl_msg *rtnl_addr_build_add_request(struct rtnl_addr *addr, int flags) +{ + int required = ADDR_ATTR_IFINDEX | ADDR_ATTR_FAMILY | + ADDR_ATTR_PREFIXLEN | ADDR_ATTR_LOCAL; + + if ((addr->a_mask & required) != required) { + nl_error(EINVAL, "Missing mandatory attributes, required are: " + "ifindex, family, prefixlen, local address."); + return NULL; + } + + return build_addr_msg(addr, RTM_NEWADDR, NLM_F_CREATE | flags); +} + +/** + * Request addition of new address + * @arg handle Netlink handle. + * @arg addr Address object representing the new address. + * @arg flags Additional netlink message flags. + * + * Builds a netlink message by calling rtnl_addr_build_add_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been fullfilled. + * + * @see rtnl_addr_build_add_request() + * + * @return 0 on sucess or a negative error if an error occured. + */ +int rtnl_addr_add(struct nl_handle *handle, struct rtnl_addr *addr, int flags) +{ + struct nl_msg *msg; + int err; + + msg = rtnl_addr_build_add_request(addr, flags); + if (!msg) + return nl_get_errno(); + + err = nl_send_auto_complete(handle, msg); + nlmsg_free(msg); + if (err < 0) + return err; + + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name Address Deletion + * @{ + */ + +/** + * Build a netlink request message to request deletion of an address + * @arg addr Address object to be deleteted. + * @arg flags Additional netlink message flags. + * + * Builds a new netlink message requesting a deletion of an address. + * The netlink message header isn't fully equipped with all relevant + * fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. + * + * Minimal required attributes: + * - interface index (rtnl_addr_set_ifindex()) + * - address family (rtnl_addr_set_family()) + * + * Optional attributes: + * - local address (rtnl_addr_set_local()) + * - label (rtnl_addr_set_label(), IPv4/DECnet only) + * - peer address (rtnl_addr_set_peer(), IPv4 only) + * + * @note Free the memory after usage using nlmsg_free(). + * @return Newly allocated netlink message or NULL if an error occured. + */ +struct nl_msg *rtnl_addr_build_delete_request(struct rtnl_addr *addr, int flags) +{ + int required = ADDR_ATTR_IFINDEX | ADDR_ATTR_FAMILY; + + if ((addr->a_mask & required) != required) { + nl_error(EINVAL, "Missing mandatory attributes, required are: " + "ifindex, family"); + return NULL; + } + + return build_addr_msg(addr, RTM_DELADDR, flags); +} + +/** + * Request deletion of an address + * @arg handle Netlink handle. + * @arg addr Address object to be deleted. + * @arg flags Additional netlink message flags. + * + * Builds a netlink message by calling rtnl_addr_build_delete_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been fullfilled. + * + * @see rtnl_addr_build_delete_request(); + * + * @return 0 on sucess or a negative error if an error occured. + */ +int rtnl_addr_delete(struct nl_handle *handle, struct rtnl_addr *addr, + int flags) +{ + struct nl_msg *msg; + int err; + + msg = rtnl_addr_build_delete_request(addr, flags); + if (!msg) + return nl_get_errno(); + + err = nl_send_auto_complete(handle, msg); + nlmsg_free(msg); + if (err < 0) + return err; + + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name Attribute Access + * @{ + */ + +/** + * Set label of address object + * @arg addr Address object to be modified. + * @arg label New address label. + * + * @note The maximum size of an address label is IFNAMSIZ. + */ +void rtnl_addr_set_label(struct rtnl_addr *addr, const char *label) +{ + strncpy(addr->a_label, label, sizeof(addr->a_label) - 1); + addr->a_mask |= ADDR_ATTR_LABEL; +} + +/** + * Get label of address object + * @arg addr Address object. + * @return Address label or NULL if not set. + */ +char *rtnl_addr_get_label(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_LABEL) + return addr->a_label; + else + return NULL; +} + +/** + * Set interface index of address object + * @arg addr Address object ot be modified. + * @arg ifindex New interface index this address is on. + */ +void rtnl_addr_set_ifindex(struct rtnl_addr *addr, int ifindex) +{ + addr->a_ifindex = ifindex; + addr->a_mask |= ADDR_ATTR_IFINDEX; +} + +/** + * Get interface index of address object + * @arg addr Address object. + * @return Interface index address is on or RTNL_LINK_NOT_FOUND if not set. + */ +int rtnl_addr_get_ifindex(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_IFINDEX) + return addr->a_ifindex; + else + return RTNL_LINK_NOT_FOUND; +} + +/** + * Set address family of address object. + * @arg addr Address object to be modified. + * @arg family New address family + * + * @note The address family is set automatically if one of the addresses + * is set and the family hasn't been specified yet. Setting it manually + * can be used to enforce family validation while setting addresses. + */ +void rtnl_addr_set_family(struct rtnl_addr *addr, int family) +{ + addr->a_family = family; + addr->a_mask |= ADDR_ATTR_FAMILY; +} + +/** + * Get address family of address object. + * @arg addr Address object. + * @return Address family or AF_UNSPEC if not set. + */ +int rtnl_addr_get_family(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_FAMILY) + return addr->a_family; + else + return AF_UNSPEC; +} + +/** + * Set prefix length of address object. + * @arg addr Address object to be modified. + * @arg prefix New prefix length. + */ +void rtnl_addr_set_prefixlen(struct rtnl_addr *addr, int prefix) +{ + addr->a_prefixlen = prefix; + addr->a_mask |= ADDR_ATTR_PREFIXLEN; +} + +/** + * Get prefix length of address object. + * @arg addr Address object. + * @return Prefix length or a negative number if not set. + */ +int rtnl_addr_get_prefixlen(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_PREFIXLEN) + return addr->a_prefixlen; + else + return -1; +} + +/** + * Set scope of address object. + * @arg addr Address object to be modified. + * @arg scope New scope. + */ +void rtnl_addr_set_scope(struct rtnl_addr *addr, int scope) +{ + addr->a_scope = scope; + addr->a_mask |= ADDR_ATTR_SCOPE; +} + +/** + * Get scope of address object. + * @arg addr Address object. + * @return Scope or a negative number if not set. + */ +int rtnl_addr_get_scope(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_SCOPE) + return addr->a_scope; + else + return -1; +} + +/** + * Set flags of address object. + * @arg addr Address object to be modified. + * @arg flags Additional flags to set. + * + * @note Existing flags that have been set will not be overwritten. + */ +void rtnl_addr_set_flags(struct rtnl_addr *addr, unsigned int flags) +{ + addr->a_flag_mask |= flags; + addr->a_flags |= flags; + addr->a_mask |= ADDR_ATTR_FLAGS; +} + +/** + * Unset flags of address object. + * @arg addr Address object to be modified. + * @arg flags Flags to unset. + */ +void rtnl_addr_unset_flags(struct rtnl_addr *addr, unsigned int flags) +{ + addr->a_flag_mask |= flags; + addr->a_flags &= ~flags; + addr->a_mask |= ADDR_ATTR_FLAGS; +} + +/** + * Get flags of address object. + * @arg addr Address object. + * @return Flags in form of a bitmask. + */ +unsigned int rtnl_addr_get_flags(struct rtnl_addr *addr) +{ + return addr->a_flags; +} + +static inline int __assign_addr(struct rtnl_addr *addr, struct nl_addr **pos, + struct nl_addr *new, int flag) +{ + if (addr->a_mask & ADDR_ATTR_FAMILY) { + if (new->a_family != addr->a_family) + return nl_error(EINVAL, "Address family mismatch"); + } else + addr->a_family = new->a_family; + + if (*pos) + nl_addr_put(*pos); + + *pos = nl_addr_get(new); + addr->a_mask |= (flag | ADDR_ATTR_FAMILY); + + return 0; +} + +/** + * Set local address of address object. + * @arg addr Address object to be modified. + * @arg local New local address. + * + * Assigns the new local address to the specified address object. The + * address is validated against the address family if set already via + * either rtnl_addr_set_family() or by setting one of the other addresses. + * The assignment fails if the address families mismatch. In case the + * address family has not been specified yet, the address family of the + * new address is elected to be the new requirement. + * + * @note The address may not contain a prefix length if the peer address + * has been specified already. + * + * @return 0 on success or a negative error code. + */ +int rtnl_addr_set_local(struct rtnl_addr *addr, struct nl_addr *local) +{ + int err; + + err = __assign_addr(addr, &addr->a_local, local, ADDR_ATTR_LOCAL); + if (err < 0) + return err; + + if (!(addr->a_mask & ADDR_ATTR_PEER)) { + addr->a_prefixlen = nl_addr_get_prefixlen(addr->a_local); + addr->a_mask |= ADDR_ATTR_PREFIXLEN; + } + + return 0; +} + +/** + * Get local address of address object. + * @arg addr Address object. + * @return Local address or NULL if not set. + */ +struct nl_addr *rtnl_addr_get_local(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_LOCAL) + return addr->a_local; + else + return NULL; +} + +/** + * Set peer address of address object. + * @arg addr Address object to be modified. + * @arg peer New peer address. + * + * Assigns the new peer address to the specified address object. The + * address is validated against the address family if set already via + * either rtnl_addr_set_family() or by setting one of the other addresses. + * The assignment fails if the address families mismatch. In case the + * address family has not been specified yet, the address family of this + * new address is elected to be the requirement. + * + * @return 0 on success or a negative error code. + */ +int rtnl_addr_set_peer(struct rtnl_addr *addr, struct nl_addr *peer) +{ + return __assign_addr(addr, &addr->a_peer, peer, ADDR_ATTR_PEER); + + addr->a_prefixlen = nl_addr_get_prefixlen(addr->a_peer); + addr->a_mask |= ADDR_ATTR_PREFIXLEN; + + return 0; +} + +/** + * Get peer address of address object. + * @arg addr Adress object. + * @return Peer address or NULL if not set. + */ +struct nl_addr *rtnl_addr_get_peer(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_PEER) + return addr->a_peer; + else + return NULL; +} + +/** + * Set broadcast address of address object. + * @arg addr Address object to be modified. + * @arg bcast New broadcast address. + * + * Assigns the new broadcast address to the specified address object. The + * address is validated against the address family if set already via + * either rtnl_addr_set_family() or by setting one of the other addresses. + * The assignment fails if the address families mismatch. In case the + * address family has not been specified yet, the address family of this + * new address is elected to be the requirement. + * + * @return 0 on success or a negative error code. + */ +int rtnl_addr_set_broadcast(struct rtnl_addr *addr, struct nl_addr *bcast) +{ + return __assign_addr(addr, &addr->a_bcast, bcast, ADDR_ATTR_BROADCAST); +} + +/** + * Get broadcast address of address object. + * @arg addr Address object. + * @return Broadcast address or NULL if not set. + */ +struct nl_addr *rtnl_addr_get_broadcast(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_BROADCAST) + return addr->a_bcast; + else + return NULL; +} + +/** + * Set anycast address of address object. + * @arg addr Address object to be modified. + * @arg anycast New anycast address. + * + * Assigns the new anycast address to the specified address object. The + * address is validated against the address family if set already via + * either rtnl_addr_set_family() or by setting one of the other addresses. + * The assignment fails if the address families mismatch. In case the + * address family has not been specified yet, the address family of this + * new address is elected to be the requirement. + * + * @return 0 on success or a negative error code. + */ +int rtnl_addr_set_anycast(struct rtnl_addr *addr, struct nl_addr *anycast) +{ + return __assign_addr(addr, &addr->a_anycast, anycast, + ADDR_ATTR_ANYCAST); +} + +/** + * Get anycast address of address object. + * @arg addr Address object. + * @return Anycast address or NULL if not set. + */ +struct nl_addr *rtnl_addr_get_anycast(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_ANYCAST) + return addr->a_anycast; + else + return NULL; +} + +/** + * Set multicast address of address object. + * @arg addr Address object to be modified. + * @arg multicast New multicast address. + * + * Assigns the new multicast address to the specified address object. The + * address is validated against the address family if set already via + * either rtnl_addr_set_family() or by setting one of the other addresses. + * The assignment fails if the address families mismatch. In case the + * address family has not been specified yet, the address family of this + * new address is elected to be the requirement. + * + * @return 0 on success or a negative error code. + */ +int rtnl_addr_set_multicast(struct rtnl_addr *addr, struct nl_addr *multicast) +{ + return __assign_addr(addr, &addr->a_multicast, multicast, + ADDR_ATTR_MULTICAST); +} + +/** + * Get multicast address of address object. + * @arg addr Address object. + * @return Multicast address or NULL if not set. + */ +struct nl_addr *rtnl_addr_get_multicast(struct rtnl_addr *addr) +{ + if (addr->a_mask & ADDR_ATTR_MULTICAST) + return addr->a_multicast; + else + return NULL; +} + +/** @} */ + +/** + * @name Address Flags Translations + * @{ + */ + +static struct trans_tbl addr_flags[] = { + __ADD(IFA_F_SECONDARY, secondary) + __ADD(IFA_F_DEPRECATED, deprecated) + __ADD(IFA_F_TENTATIVE, tentative) + __ADD(IFA_F_PERMANENT, permanent) +}; + +/** + * Convert address flags to character string. + * @arg flags Address flags. + * @arg buf Destination buffer. + * @arg size Size of destination buffer. + * + * Converts address flags to a character string separated by commas and + * stores the resulting character string in the specified destination buffer. + * + * @return Formatted flags as character string. + */ +char *rtnl_addr_flags2str(int flags, char *buf, size_t size) +{ + return __flags2str(flags, buf, size, addr_flags, + ARRAY_SIZE(addr_flags)); +} + +/** + * Convert character string to address flags. + * @arg name Name of address flags. + * + * Converts the provided character string specifying any number of address + * flags separated by commas to the corresponding numeric bitmask. + * + * @return Address flags in form of a bitmask. + */ +int rtnl_addr_str2flags(const char *name) +{ + return __str2flags(name, addr_flags, ARRAY_SIZE(addr_flags)); +} + +/** @} */ + +static struct nl_cache_ops rtnl_addr_ops = { + .co_name = "route/addr", + .co_size = sizeof(struct rtnl_addr), + .co_hdrsize = sizeof(struct ifaddrmsg), + .co_msgtypes = { + { RTM_NEWADDR, "new" }, + { RTM_DELADDR, "delete" }, + { RTM_GETADDR, "get" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_ROUTE, + .co_request_update = addr_request_update, + .co_msg_parser = addr_msg_parser, + .co_free_data = addr_free_data, + .co_dump[NL_DUMP_BRIEF] = addr_dump_brief, + .co_dump[NL_DUMP_FULL] = addr_dump_full, + .co_dump[NL_DUMP_STATS] = addr_dump_stats, + .co_dump[NL_DUMP_XML] = addr_dump_xml, + .co_dump[NL_DUMP_ENV] = addr_dump_env, + .co_filter = addr_filter, +}; + +static void __init addr_init(void) +{ + nl_cache_mngt_register(&rtnl_addr_ops); +} + +static void __exit neigh_exit(void) +{ + nl_cache_mngt_unregister(&rtnl_addr_ops); +} + +/** @} */ diff --git a/lib/route/class.c b/lib/route/class.c new file mode 100644 index 0000000..b6a81e9 --- /dev/null +++ b/lib/route/class.c @@ -0,0 +1,611 @@ +/* + * lib/route/class.c Queueing Classes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup tc + * @defgroup class Classes + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +static struct nl_cache_ops rtnl_class_ops; +/** @endcond */ + +static struct rtnl_class_ops *class_ops_list; + +static struct rtnl_class_ops *class_lookup_ops(const char *kind) +{ + struct rtnl_class_ops *ops; + + for (ops = class_ops_list; ops; ops = ops->co_next) + if (!strcmp(kind, ops->co_kind)) + return ops; + + return NULL; +} + +static inline struct rtnl_class_ops *class_ops(struct rtnl_class *class) +{ + if (!class->c_ops) + class->c_ops = class_lookup_ops(class->c_kind); + + return class->c_ops; +} + +/** + * @name Class Module API + * @{ + */ + +/** + * Register a class module + * @arg ops class module operations + */ +int rtnl_class_register(struct rtnl_class_ops *ops) +{ + struct rtnl_class_ops *o, **op; + + if (!ops->co_kind[0]) + BUG(); + + for (op = &class_ops_list; (o = *op) != NULL; op = &o->co_next) + if (!strcasecmp(ops->co_kind, o->co_kind)) + return nl_errno(EEXIST); + + ops->co_next = NULL; + *op = ops; + + return 0; +} + +/** + * Unregister a class module + * @arg ops class module operations + */ +int rtnl_class_unregister(struct rtnl_class_ops *ops) +{ + struct rtnl_class_ops *o, **op; + + for (op = &class_ops_list; (o = *op) != NULL; op = &o->co_next) + if (!strcasecmp(ops->co_kind, o->co_kind)) + break; + + if (!o) + return nl_errno(ENOENT); + + *op = ops->co_next; + + return 0; +} + +/** @} */ + +static int class_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *n, + void *arg) +{ + int err; + struct nl_parser_param *pp = arg; + struct rtnl_class *class; + struct rtnl_class_ops *ops; + + class = rtnl_class_alloc(); + if (!class) { + err = nl_errno(ENOMEM); + goto errout; + } + class->ce_msgtype = n->nlmsg_type; + + err = tca_msg_parser(n, (struct rtnl_tca *) class); + if (err < 0) + goto errout_free; + + ops = class_ops(class); + if (ops && ops->co_msg_parser) { + err = ops->co_msg_parser(class); + if (err < 0) + goto errout_free; + } + + err = pp->pp_cb((struct nl_object *) class, pp); + if (err < 0) + goto errout_free; + + return P_ACCEPT; + +errout_free: + rtnl_class_put(class); +errout: + return err; +} + +static int class_request_update(struct nl_cache *cache, + struct nl_handle *handle) +{ + struct tcmsg tchdr = { + .tcm_family = AF_UNSPEC, + .tcm_ifindex = cache->c_iarg1, + }; + + return nl_send_simple(handle, RTM_GETTCLASS, NLM_F_DUMP, &tchdr, + sizeof(tchdr)); +} + +static void class_free_data(struct nl_object *obj) +{ + struct rtnl_class *class = (struct rtnl_class *) obj; + struct rtnl_class_ops *ops; + + tca_free_data((struct rtnl_tca *) class); + + ops = class_ops(class); + if (ops && ops->co_free_data) + ops->co_free_data(class); +} + +static int class_dump_brief(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_class *class = (struct rtnl_class *) obj; + struct rtnl_class_ops *ops; + + int line = tca_dump_brief((struct rtnl_tca *) class, "class", p, 0); + + ops = class_ops(class); + if (ops && ops->co_dump[NL_DUMP_BRIEF]) + line = ops->co_dump[NL_DUMP_BRIEF](class, p, line); + dp_dump(p, "\n"); + + return line; +} + +static int class_dump_full(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_class *class = (struct rtnl_class *) obj; + struct rtnl_class_ops *ops; + int line; + + line = class_dump_brief(obj, p); + line = tca_dump_full((struct rtnl_tca *) class, p, line); + + if (class->c_info) { + char buf[32]; + dp_dump(p, "child-qdisc %s ", + rtnl_tc_handle2str(class->c_info, buf, sizeof(buf))); + } + + ops = class_ops(class); + if (ops && ops->co_dump[NL_DUMP_FULL]) + line = ops->co_dump[NL_DUMP_FULL](class, p, line); + else if (!class->c_info) + dp_dump(p, "noop (no leaf qdisc)"); + + dp_dump(p, "\n"); + + return line; +} + +static int class_dump_stats(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_class *class = (struct rtnl_class *) obj; + struct rtnl_class_ops *ops; + int line; + + line = class_dump_full(obj, p); + line = tca_dump_stats((struct rtnl_tca *) class, p, line); + dp_dump(p, "\n"); + + ops = class_ops(class); + if (ops && ops->co_dump[NL_DUMP_STATS]) + line = ops->co_dump[NL_DUMP_STATS](class, p, line); + + return line; +} + +static int class_filter(struct nl_object *obj, struct nl_object *filter) +{ + return tca_filter((struct rtnl_tca *) obj, (struct rtnl_tca *) filter); +} + +/** + * @name Class Addition/Modification + * @{ + */ + +static struct nl_msg *class_build(struct rtnl_class *class, int type, int flags) +{ + struct rtnl_class_ops *ops; + struct nl_msg *msg; + int err; + + msg = tca_build_msg((struct rtnl_tca *) class, type, flags); + if (!msg) + goto errout; + + ops = class_ops(class); + if (ops && ops->co_get_opts) { + struct nl_msg *opts; + + opts = ops->co_get_opts(class); + if (opts) { + err = nla_put_nested(msg, TCA_OPTIONS, opts); + nlmsg_free(opts); + if (err < 0) + goto errout; + } + } + + return msg; +errout: + nlmsg_free(msg); + return NULL; +} + +/** + * Build a netlink message to add a new class + * @arg class class to add + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting an addition of a class. + * The netlink message header isn't fully equipped with all relevant + * fields and must be sent out via nl_send_auto_complete() or + * supplemented as needed. + * + * Common message flags + * - NLM_F_REPLACE - replace possibly existing classes + * + * @return New netlink message + */ +struct nl_msg *rtnl_class_build_add_request(struct rtnl_class *class, int flags) +{ + return class_build(class, RTM_NEWTCLASS, NLM_F_CREATE | flags); +} + +/** + * Add a new class + * @arg handle netlink handle + * @arg class class to delete + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_qdisc_build_add_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been processed. + * + * Common message flags + * - NLM_F_REPLACE - replace possibly existing classes + * + * @return 0 on success or a negative error code + */ +int rtnl_class_add(struct nl_handle *handle, struct rtnl_class *class, + int flags) +{ + struct nl_msg *msg; + int err; + + msg = rtnl_class_build_add_request(class, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name General + * @{ + */ + +/** + * Allocate a new class object + * @return New class object + */ +struct rtnl_class *rtnl_class_alloc(void) +{ + return (struct rtnl_class *) nl_object_alloc_from_ops(&rtnl_class_ops); +} + +/** + * Give back reference on rclass object. + * @arg class Class object to be given back. + * + * Decrements the reference counter and frees the object if the + * last reference has been released. + */ +void rtnl_class_put(struct rtnl_class *class) +{ + nl_object_put((struct nl_object *) class); +} + +/** + * Free class object. + * @arg class Class object to be freed. + * + * @note Always use rtnl_class_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void rtnl_class_free(struct rtnl_class *class) +{ + nl_object_free((struct nl_object *) class); +} + +/** + * Build a class cache including all classes attached to the specified interface + * @arg handle netlink handle + * @arg ifindex interface index of the link the classes are + * attached to. + * + * Allocates a new cache, initializes it properly and updates it to + * include all classes attached to the specified interface. + * + * @note The caller is responsible for destroying and freeing the + * cache after using it. + * @return The cache or NULL if an error has occured. + */ +struct nl_cache * rtnl_class_alloc_cache(struct nl_handle *handle, int ifindex) +{ + struct nl_cache * cache; + + cache = nl_cache_alloc_from_ops(&rtnl_class_ops); + if (!cache) + return NULL; + + cache->c_iarg1 = ifindex; + + if (nl_cache_update(handle, cache) < 0) { + nl_cache_free(cache); + return NULL; + } + + return cache; +} + +/** @} */ + +/** + * @name Leaf Qdisc Access + * @{ + */ + +/** + * Determine if the class has a leaf qdisc attached + * @arg class class to check + */ +int rtnl_class_has_leaf_qdisc(struct rtnl_class *class) +{ + return !!class->c_info; +} + +/** + * Lookup the leaf qdisc of a class + * @arg class the parent class + * @arg cache a qdisc cache including at laest all qdiscs of the + * interface the specified class is attached to + * @return The qdisc from the cache or NULL if the class has no leaf qdisc + */ +struct rtnl_qdisc *rtnl_class_leaf_qdisc(struct rtnl_class *class, + struct nl_cache *cache) +{ + struct rtnl_qdisc *leaf; + + if (!rtnl_class_has_leaf_qdisc(class)) + return NULL; + + leaf = rtnl_qdisc_get_by_parent(cache, class->c_ifindex, + class->c_handle); + if (!leaf || leaf->q_handle != class->c_info) + return NULL; + + return leaf; +} + +/** @} */ + +/** + * @name Iterators + * @{ + */ + +/** + * Call a callback for each child class of a class + * @arg class the parent class + * @arg cache a class cache including all classes of the interface + * the specified class is attached to + * @arg cb callback function + * @arg arg argument to be passed to callback function + */ +void rtnl_class_foreach_child(struct rtnl_class *class, struct nl_cache *cache, + void (*cb)(struct nl_object *, void *), void *arg) +{ + struct rtnl_class *filter; + + filter = rtnl_class_alloc(); + if (!filter) + return; + + rtnl_class_set_parent(filter, class->c_handle); + rtnl_class_set_ifindex(filter, class->c_ifindex); + rtnl_class_set_kind(filter, class->c_kind); + + nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg); + rtnl_class_put(filter); +} + +/** + * Call a callback for each classifier attached to the class + * @arg class the parent class + * @arg cache a filter cache including at least all the filters + * attached to the specified class + * @arg cb callback function + * @arg arg argument to be passed to callback function + */ +void rtnl_class_foreach_cls(struct rtnl_class *class, struct nl_cache *cache, + void (*cb)(struct nl_object *, void *), void *arg) +{ + struct rtnl_cls *filter; + + filter = rtnl_cls_alloc(); + if (!filter) + return; + + rtnl_cls_set_ifindex(filter, class->c_ifindex); + rtnl_cls_set_parent(filter, class->c_parent); + + nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg); + rtnl_cls_put(filter); +} + +/** @} */ + +/** + * @name Attribute Modifications + * @{ + */ + +/** + * Set the interface index of a class to the specified value + * @arg class class to be changed + * @arg ifindex new interface index + */ +void rtnl_class_set_ifindex(struct rtnl_class *class, int ifindex) +{ + tca_set_ifindex((struct rtnl_tca *) class, ifindex); +} + +/** + * Get the interface index of a class + * @arg class class handle + * @return Interface index or RTNL_LINK_NOT_FOUND if not set + */ +int rtnl_class_get_ifindex(struct rtnl_class *class) +{ + return tca_get_ifindex((struct rtnl_tca *) class); +} + + +/** + * Set the handle of a class to the specified value + * @arg class class to be changed + * @arg handle new handle + */ +void rtnl_class_set_handle(struct rtnl_class *class, uint32_t handle) +{ + tca_set_handle((struct rtnl_tca *) class, handle); +} + +/** + * Get the handle of a class + * @arg class class handle + * @return Handle or 0 if not set + */ +uint32_t rtnl_class_get_handle(struct rtnl_class *class) +{ + return tca_get_handle((struct rtnl_tca *) class); +} + +/** + * Set the parent handle of a class to the specified value + * @arg class class to be changed + * @arg parent new parent handle + */ +void rtnl_class_set_parent(struct rtnl_class *class, uint32_t parent) +{ + tca_set_parent((struct rtnl_tca *) class, parent); +} + +/** + * Get the parent handle of a class + * @arg class class handle + * @return Parent handle or 0 if not set + */ +uint32_t rtnl_class_get_parent(struct rtnl_class *class) +{ + return tca_get_parent((struct rtnl_tca *) class); +} + +/** + * Set the kind of a class to the specified value + * @arg class class to be changed + * @arg name new kind name + */ +void rtnl_class_set_kind(struct rtnl_class *class, const char *name) +{ + tca_set_kind((struct rtnl_tca *) class, name); +} + +/** + * Get the kind of a class + * @arg class class handle + * @return Kind or NULL if not set + */ +char *rtnl_class_get_kind(struct rtnl_class *class) +{ + return tca_get_kind((struct rtnl_tca *) class); +} + +/** + * Get the statistic specified by the id + * @arg class class handle + * @arg id statistic id + * @return The current counter of the specified statistic + */ +uint64_t rtnl_class_get_stat(struct rtnl_class *class, + enum rtnl_tc_stats_id id) +{ + return tca_get_stat((struct rtnl_tca *) class, id); +} + +/** @} */ + +static struct nl_cache_ops rtnl_class_ops = { + .co_name = "route/class", + .co_size = sizeof(struct rtnl_class), + .co_hdrsize = sizeof(struct tcmsg), + .co_msgtypes = { + { RTM_NEWTCLASS, "new" }, + { RTM_DELTCLASS, "del" }, + { RTM_GETTCLASS, "get" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_ROUTE, + .co_request_update = &class_request_update, + .co_msg_parser = &class_msg_parser, + .co_free_data = &class_free_data, + .co_dump[NL_DUMP_BRIEF] = &class_dump_brief, + .co_dump[NL_DUMP_FULL] = &class_dump_full, + .co_dump[NL_DUMP_STATS] = &class_dump_stats, + .co_filter = &class_filter, +}; + +static void __init class_init(void) +{ + nl_cache_mngt_register(&rtnl_class_ops); +} + +static void __exit class_exit(void) +{ + nl_cache_mngt_unregister(&rtnl_class_ops); +} + +/** @} */ diff --git a/lib/route/classifier.c b/lib/route/classifier.c new file mode 100644 index 0000000..30dc4cf --- /dev/null +++ b/lib/route/classifier.c @@ -0,0 +1,593 @@ +/* + * lib/route/classifier.c Classifier + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup tc + * @defgroup cls Classifiers + * + * @par Classifier Identification + * - protocol + * - priority + * - parent + * - interface + * - kind + * - handle + * + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define CLS_ATTR_PRIO (TCA_ATTR_MAX << 1) +#define CLS_ATTR_PROTOCOL (TCA_ATTR_MAX << 2) + +static struct nl_cache_ops rtnl_cls_ops; +/** @endcond */ + +static struct rtnl_cls_ops *cls_ops_list; + +static struct rtnl_cls_ops * cls_lookup_ops(char *kind) +{ + struct rtnl_cls_ops *ops; + + for (ops = cls_ops_list; ops; ops = ops->co_next) + if (!strcmp(kind, ops->co_kind)) + return ops; + + return NULL; +} + +static inline struct rtnl_cls_ops *cls_ops(struct rtnl_cls *cls) +{ + if (!cls->c_ops) + cls->c_ops = cls_lookup_ops(cls->c_kind); + + return cls->c_ops; +} + +/** + * @name Classifier Module API + * @{ + */ + +/** + * Register a classifier module + * @arg ops classifier module operations + */ +int rtnl_cls_register(struct rtnl_cls_ops *ops) +{ + struct rtnl_cls_ops *o, **op; + + if (!ops->co_kind) + BUG(); + + for (op = &cls_ops_list; (o = *op) != NULL; op = &o->co_next) + if (!strcasecmp(ops->co_kind, o->co_kind)) + return nl_errno(EEXIST); + + ops->co_next = NULL; + *op = ops; + + return 0; +} + +/** + * Unregister a classifier module + * @arg ops classifier module operations + */ +int rtnl_cls_unregister(struct rtnl_cls_ops *ops) +{ + struct rtnl_cls_ops *o, **op; + + for (op = &cls_ops_list; (o = *op) != NULL; op = &o->co_next) + if (!strcasecmp(ops->co_kind, o->co_kind)) + break; + + if (!o) + return nl_errno(ENOENT); + + *op = ops->co_next; + + return 0; +} + +/** @} */ + +static int cls_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *nlh, + void *arg) +{ + int err; + struct nl_parser_param *pp = arg; + struct rtnl_cls *cls; + struct rtnl_cls_ops *ops; + + cls = rtnl_cls_alloc(); + if (!cls) { + err = nl_errno(ENOMEM); + goto errout; + } + cls->ce_msgtype = nlh->nlmsg_type; + + err = tca_msg_parser(nlh, (struct rtnl_tca *) cls); + if (err < 0) + goto errout_free; + + cls->c_prio = TC_H_MAJ(cls->c_info) >> 16; + cls->c_protocol = ntohs(TC_H_MIN(cls->c_info)); + + ops = cls_ops(cls); + if (ops && ops->co_msg_parser) { + err = ops->co_msg_parser(cls); + if (err < 0) + goto errout_free; + } + + err = pp->pp_cb((struct nl_object *) cls, pp); + if (err < 0) + goto errout_free; + + return P_ACCEPT; + +errout_free: + rtnl_cls_put(cls); +errout: + return err; +} + +static int cls_request_update(struct nl_cache *cache, struct nl_handle *handle) +{ + struct tcmsg tchdr = { + .tcm_family = AF_UNSPEC, + .tcm_ifindex = cache->c_iarg1, + .tcm_parent = cache->c_iarg2, + }; + + return nl_send_simple(handle, RTM_GETTFILTER, NLM_F_DUMP, &tchdr, + sizeof(tchdr)); +} + + +static void cls_free_data(struct nl_object *obj) +{ + struct rtnl_cls *cls = (struct rtnl_cls *) obj; + struct rtnl_cls_ops *ops; + + tca_free_data((struct rtnl_tca *) cls); + + ops = cls_ops(cls); + if (ops && ops->co_free_data) + ops->co_free_data(cls); +} + +static int cls_dump_brief(struct nl_object *obj, struct nl_dump_params *p) +{ + char buf[32]; + struct rtnl_cls *cls = (struct rtnl_cls *) obj; + struct rtnl_cls_ops *ops; + int line; + + line = tca_dump_brief((struct rtnl_tca *) cls, "cls", p, 0); + + dp_dump(p, " prio %u protocol %s", cls->c_prio, + nl_ether_proto2str(cls->c_protocol, buf, sizeof(buf))); + + ops = cls_ops(cls); + if (ops && ops->co_dump[NL_DUMP_BRIEF]) + line = ops->co_dump[NL_DUMP_BRIEF](cls, p, line); + dp_dump(p, "\n"); + + return line; +} + +static int cls_dump_full(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_cls *cls = (struct rtnl_cls *) obj; + struct rtnl_cls_ops *ops; + int line; + + line = cls_dump_brief(obj, p); + line = tca_dump_full((struct rtnl_tca *) cls, p, line); + + ops = cls_ops(cls); + if (ops && ops->co_dump[NL_DUMP_FULL]) + line = ops->co_dump[NL_DUMP_FULL](cls, p, line); + else + dp_dump(p, "no options\n"); + + return line; +} + +static int cls_dump_stats(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_cls *cls = (struct rtnl_cls *) obj; + struct rtnl_cls_ops *ops; + int line; + + line = cls_dump_full(obj, p); + line = tca_dump_stats((struct rtnl_tca *) cls, p, line); + dp_dump(p, "\n"); + + ops = cls_ops(cls); + if (ops && ops->co_dump[NL_DUMP_STATS]) + line = ops->co_dump[NL_DUMP_STATS](cls, p, line); + + return line; +} + +static int cls_filter(struct nl_object *obj, struct nl_object *filter) +{ + return tca_filter((struct rtnl_tca *) obj, (struct rtnl_tca *) filter); +} + +static struct nl_msg *cls_build(struct rtnl_cls *cls, int type, int flags) +{ + struct nl_msg *msg; + struct rtnl_cls_ops *ops; + int err, prio, proto; + struct tcmsg *tchdr; + + msg = tca_build_msg((struct rtnl_tca *) cls, type, flags); + if (!msg) + goto errout; + + tchdr = nlmsg_data(nlmsg_hdr(msg)); + prio = cls->c_mask & CLS_ATTR_PRIO ? cls->c_prio : 0; + proto = cls->c_mask & CLS_ATTR_PROTOCOL ? cls->c_protocol : ETH_P_ALL; + tchdr->tcm_info = TC_H_MAKE(prio << 16, htons(proto)), + + ops = cls_ops(cls); + if (ops && ops->co_get_opts) { + struct nl_msg *opts; + + opts = ops->co_get_opts(cls); + if (opts) { + err = nla_put_nested(msg, TCA_OPTIONS, opts); + nlmsg_free(opts); + if (err < 0) + goto errout; + } + } + + return msg; +errout: + nlmsg_free(msg); + return NULL; +} + +/** + * @name Classifier Addition/Modification/Deletion + * @{ + */ + +/** + * Build a netlink message to add a new classifier + * @arg cls classifier to add + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting an addition of a classifier + * The netlink message header isn't fully equipped with all relevant + * fields and must be sent out via nl_send_auto_complete() or + * supplemented as needed. \a classifier must contain the attributes of + * the new classifier set via \c rtnl_cls_set_* functions. \a opts + * may point to the clsasifier specific options. + * + * @return New netlink message + */ +struct nl_msg * rtnl_cls_build_add_request(struct rtnl_cls *cls, int flags) +{ + return cls_build(cls, RTM_NEWTFILTER, NLM_F_CREATE | flags); +} + +/** + * Add a new classifier + * @arg handle netlink handle + * @arg cls classifier to add + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_cls_build_add_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been processed. + * + * @return 0 on sucess or a negative error if an error occured. + */ +int rtnl_cls_add(struct nl_handle *handle, struct rtnl_cls *cls, int flags) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_cls_build_add_request(cls, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** + * Build a netlink message to change classifier attributes + * @arg cls classifier to change + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a change of a neigh + * attributes. The netlink message header isn't fully equipped with + * all relevant fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. + * + * @return The netlink message + */ +struct nl_msg *rtnl_cls_build_change_request(struct rtnl_cls *cls, int flags) +{ + return cls_build(cls, RTM_NEWTFILTER, NLM_F_REPLACE | flags); +} + +/** + * Change a classifier + * @arg handle netlink handle + * @arg cls classifier to change + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_cls_build_change_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been processed. + * + * @return 0 on sucess or a negative error if an error occured. + */ +int rtnl_cls_change(struct nl_handle *handle, struct rtnl_cls *cls, + int flags) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_cls_build_change_request(cls, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** + * Build a netlink request message to delete a classifier + * @arg cls classifier to delete + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a deletion of a classifier. + * The netlink message header isn't fully equipped with all relevant + * fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. + * + * @return New netlink message + */ +struct nl_msg *rtnl_cls_build_delete_request(struct rtnl_cls *cls, int flags) +{ + return cls_build(cls, RTM_DELTFILTER, flags); +} + + +/** + * Delete a classifier + * @arg handle netlink handle + * @arg cls classifier to delete + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_cls_build_delete_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been processed. + * + * @return 0 on sucess or a negative error if an error occured. + */ +int rtnl_cls_delete(struct nl_handle *handle, struct rtnl_cls *cls, int flags) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_cls_build_delete_request(cls, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name General API + * @{ + */ + +/** + * Allocate a new classifier object + * @return New classifier object + */ +struct rtnl_cls *rtnl_cls_alloc(void) +{ + return (struct rtnl_cls *) nl_object_alloc_from_ops(&rtnl_cls_ops); +} + +/** + * Give back reference on classifier object. + * @arg cls Classifier object to be given back. + * + * Decrements the reference counter and frees the object if the + * last reference has been released. + */ +void rtnl_cls_put(struct rtnl_cls *cls) +{ + nl_object_put((struct nl_object *) cls); +} + +/** + * Free classifier object. + * @arg cls Classifier object to be freed. + * + * @note Always use rtnl_cls_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void rtnl_cls_free(struct rtnl_cls *cls) +{ + nl_object_free((struct nl_object *) cls); +} + +/** + * Build a classifier cache including all classifiers attached to the + * specified class/qdisc on eht specified interface. + * @arg handle netlink handle + * @arg ifindex interface index of the link the classes are + * attached to. + * @arg parent parent qdisc/class + * + * Allocates a new cache, initializes it properly and updates it to + * include all classes attached to the specified interface. + * + * @note The caller is responsible for destroying and freeing the + * cache after using it. + * @return The cache or NULL if an error has occured. + */ +struct nl_cache *rtnl_cls_alloc_cache(struct nl_handle *handle, + int ifindex, uint32_t parent) +{ + struct nl_cache * cache; + + cache = nl_cache_alloc_from_ops(&rtnl_cls_ops); + if (cache == NULL) + return NULL; + + cache->c_iarg1 = ifindex; + cache->c_iarg2 = parent; + + if (nl_cache_update(handle, cache) < 0) { + nl_cache_free(cache); + return NULL; + } + + return cache; +} + +void rtnl_cls_set_ifindex(struct rtnl_cls *f, int ifindex) +{ + tca_set_ifindex((struct rtnl_tca *) f, ifindex); +} + +void rtnl_cls_set_handle(struct rtnl_cls *f, uint32_t handle) +{ + tca_set_handle((struct rtnl_tca *) f, handle); +} + +void rtnl_cls_set_parent(struct rtnl_cls *f, uint32_t parent) +{ + tca_set_parent((struct rtnl_tca *) f, parent); +} + +void rtnl_cls_set_kind(struct rtnl_cls *f, const char *kind) +{ + tca_set_kind((struct rtnl_tca *) f, kind); +} + +/** + * Set prioroty of a classifier + * @arg cls classifier to change + * @arg prio new priority + */ +void rtnl_cls_set_prio(struct rtnl_cls *cls, int prio) +{ + cls->c_prio = prio; + cls->c_mask |= CLS_ATTR_PRIO; +} + +/** + * Get priority of a classifier + * @arg cls classifier + */ +int rtnl_cls_get_prio(struct rtnl_cls *cls) +{ + if (cls->c_mask & CLS_ATTR_PRIO) + return cls->c_prio; + else + return 0; +} + +/** + * Set protocol of a classifier + * @arg cls classifier to change + * @arg protocol protocol identifier (ETH_P_xxx) in host byte-order + */ +void rtnl_cls_set_protocol(struct rtnl_cls *cls, int protocol) +{ + cls->c_protocol = protocol; + cls->c_mask |= CLS_ATTR_PROTOCOL; +} + +/** + * Get protocol of a classifier + * @arg cls classifier + */ +int rtnl_cls_get_protocol(struct rtnl_cls *cls) +{ + if (cls->c_mask & CLS_ATTR_PROTOCOL) + return cls->c_protocol; + else + return 0; +} + +/** @} */ + +static struct nl_cache_ops rtnl_cls_ops = { + .co_name = "route/cls", + .co_size = sizeof(struct rtnl_cls), + .co_hdrsize = sizeof(struct tcmsg), + .co_msgtypes = { + { RTM_NEWTFILTER, "new" }, + { RTM_DELTFILTER, "delete" }, + { RTM_GETTFILTER, "get" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_ROUTE, + .co_request_update = cls_request_update, + .co_filter = cls_filter, + .co_free_data = cls_free_data, + .co_msg_parser = cls_msg_parser, + .co_dump[NL_DUMP_BRIEF] = cls_dump_brief, + .co_dump[NL_DUMP_FULL] = cls_dump_full, + .co_dump[NL_DUMP_STATS] = cls_dump_stats, +}; + +static void __init cls_init(void) +{ + nl_cache_mngt_register(&rtnl_cls_ops); +} + +static void __exit cls_exit(void) +{ + nl_cache_mngt_unregister(&rtnl_cls_ops); +} + +/** @} */ diff --git a/lib/route/cls/fw.c b/lib/route/cls/fw.c new file mode 100644 index 0000000..a0cde11 --- /dev/null +++ b/lib/route/cls/fw.c @@ -0,0 +1,226 @@ +/* + * lib/route/cls/fw.c fw classifier + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + * Copyright (c) 2006 Petr Gotthard + * Copyright (c) 2006 Siemens AG Oesterreich + */ + +/** + * @ingroup cls + * @defgroup fw Firewall Classifier + * + * @{ + */ + +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define FW_ATTR_CLASSID 0x001 +#define FW_ATTR_ACTION 0x002 +#define FW_ATTR_POLICE 0x004 +#define FW_ATTR_INDEV 0x008 +/** @endcond */ + +static inline struct rtnl_fw *fw_cls(struct rtnl_cls *cls) +{ + return (struct rtnl_fw *) cls->c_subdata; +} + +static inline struct rtnl_fw *fw_alloc(struct rtnl_cls *cls) +{ + if (!cls->c_subdata) + cls->c_subdata = calloc(1, sizeof(struct rtnl_fw)); + + return fw_cls(cls); +} + +static struct nla_policy fw_policy[TCA_FW_MAX+1] = { + [TCA_FW_CLASSID] = { .type = NLA_U32 }, + [TCA_FW_INDEV] = { .type = NLA_STRING, + .maxlen = IFNAMSIZ }, +}; + +static int fw_msg_parser(struct rtnl_cls *cls) +{ + int err; + struct nlattr *tb[TCA_FW_MAX + 1]; + struct rtnl_fw *f; + + err = tca_parse(tb, TCA_FW_MAX, (struct rtnl_tca *) cls, fw_policy); + if (err < 0) + return err; + + f = fw_alloc(cls); + if (!f) + goto errout_nomem; + + if (tb[TCA_FW_CLASSID]) { + f->cf_classid = nla_get_u32(tb[TCA_FW_CLASSID]); + f->cf_mask |= FW_ATTR_CLASSID; + } + + if (tb[TCA_FW_ACT]) { + f->cf_act = nla_get_data(tb[TCA_FW_ACT]); + if (!f->cf_act) + goto errout_nomem; + f->cf_mask |= FW_ATTR_ACTION; + } + + if (tb[TCA_FW_POLICE]) { + f->cf_police = nla_get_data(tb[TCA_FW_POLICE]); + if (!f->cf_police) + goto errout_nomem; + f->cf_mask |= FW_ATTR_POLICE; + } + + if (tb[TCA_FW_INDEV]) { + nla_strlcpy(f->cf_indev, tb[TCA_FW_INDEV], IFNAMSIZ); + f->cf_mask |= FW_ATTR_INDEV; + } + + return 0; + +errout_nomem: + err = nl_errno(ENOMEM); + + return err; +} + +static void fw_free_data(struct rtnl_cls *cls) +{ + struct rtnl_fw *f = fw_cls(cls); + + if (!f) + return; + + nl_data_free(f->cf_act); + nl_data_free(f->cf_police); + + free(cls->c_subdata); +} + +static int fw_dump_brief(struct rtnl_cls *cls, struct nl_dump_params *p, + int line) +{ + struct rtnl_fw *f = fw_cls(cls); + char buf[32]; + + if (!f) + goto ignore; + + if (f->cf_mask & FW_ATTR_CLASSID) + dp_dump(p, " target %s", + rtnl_tc_handle2str(f->cf_classid, buf, sizeof(buf))); + +ignore: + return line; +} + +static int fw_dump_full(struct rtnl_cls *cls, struct nl_dump_params *p, + int line) +{ + struct rtnl_fw *f = fw_cls(cls); + + if (!f) + goto ignore; + + if (f->cf_mask & FW_ATTR_INDEV) + dp_dump(p, "indev %s ", f->cf_indev); + +ignore: + return line; +} + +static int fw_dump_stats(struct rtnl_cls *cls, struct nl_dump_params *p, + int line) +{ + struct rtnl_fw *f = fw_cls(cls); + + if (!f) + goto ignore; + +ignore: + return line; +} + +static struct nl_msg *fw_get_opts(struct rtnl_cls *cls) +{ + struct rtnl_fw *f; + struct nl_msg *msg; + + f = fw_cls(cls); + if (!f) + return NULL; + + msg = nlmsg_build_no_hdr(); + if (!msg) + return NULL; + + if (f->cf_mask & FW_ATTR_CLASSID) + nla_put_u32(msg, TCA_FW_CLASSID, f->cf_classid); + + if (f->cf_mask & FW_ATTR_ACTION) + nla_put_data(msg, TCA_FW_ACT, f->cf_act); + + if (f->cf_mask & FW_ATTR_POLICE) + nla_put_data(msg, TCA_FW_POLICE, f->cf_police); + + if (f->cf_mask & FW_ATTR_INDEV) + nla_put_string(msg, TCA_FW_INDEV, f->cf_indev); + + return msg; +} + +/** + * @name Attribute Modifications + * @{ + */ + +int rtnl_fw_set_classid(struct rtnl_cls *cls, uint32_t classid) +{ + struct rtnl_fw *f; + + f = fw_alloc(cls); + if (!f) + return nl_errno(ENOMEM); + + f->cf_classid = classid; + f->cf_mask |= FW_ATTR_CLASSID; + + return 0; +} + +/** @} */ + +static struct rtnl_cls_ops fw_ops = { + .co_kind = "fw", + .co_msg_parser = fw_msg_parser, + .co_free_data = fw_free_data, + .co_get_opts = fw_get_opts, + .co_dump[NL_DUMP_BRIEF] = fw_dump_brief, + .co_dump[NL_DUMP_FULL] = fw_dump_full, + .co_dump[NL_DUMP_STATS] = fw_dump_stats, +}; + +static void __init fw_init(void) +{ + rtnl_cls_register(&fw_ops); +} + +static void __exit fw_exit(void) +{ + rtnl_cls_unregister(&fw_ops); +} + +/** @} */ diff --git a/lib/route/cls/police.c b/lib/route/cls/police.c new file mode 100644 index 0000000..051c6b2 --- /dev/null +++ b/lib/route/cls/police.c @@ -0,0 +1,67 @@ +/* + * lib/route/cls/police.c Policer + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/** + * @name Policer Type + * @{ + */ + +static struct trans_tbl police_types[] = { + __ADD(TC_POLICE_UNSPEC,unspec) + __ADD(TC_POLICE_OK,ok) + __ADD(TC_POLICE_RECLASSIFY,reclassify) + __ADD(TC_POLICE_SHOT,shot) +#ifdef TC_POLICE_PIPE + __ADD(TC_POLICE_PIPE,pipe) +#endif +}; + +/** + * Transform a policer type number into a character string (Reentrant). + * @arg type policer type + * @arg buf destination buffer + * @arg len buffer length + * + * Transforms a policer type number into a character string and stores + * it in the provided buffer. + * + * @return The destination buffer or the type encoded in hex if no match was found. + */ +char * nl_police2str(int type, char *buf, size_t len) +{ + return __type2str(type, buf, len, police_types, + ARRAY_SIZE(police_types)); +} + +/** + * Transform a character string into a policer type number + * @arg name policer type name + * + * Transform the provided character string specifying a policer + * type into the corresponding numeric value + * + * @return Policer type number or a negative value. + */ +int nl_str2police(const char *name) +{ + return __str2type(name, police_types, ARRAY_SIZE(police_types)); +} + +/** @} */ diff --git a/lib/route/cls/u32.c b/lib/route/cls/u32.c new file mode 100644 index 0000000..e97173a --- /dev/null +++ b/lib/route/cls/u32.c @@ -0,0 +1,566 @@ +/* + * lib/route/cls/u32.c u32 classifier + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + * Copyright (c) 2005-2006 Petr Gotthard + * Copyright (c) 2005-2006 Siemens AG Oesterreich + */ + +/** + * @ingroup cls + * @defgroup u32 Universal 32-bit Classifier + * + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define U32_ATTR_DIVISOR 0x001 +#define U32_ATTR_HASH 0x002 +#define U32_ATTR_CLASSID 0x004 +#define U32_ATTR_LINK 0x008 +#define U32_ATTR_PCNT 0x010 +#define U32_ATTR_SELECTOR 0x020 +#define U32_ATTR_ACTION 0x040 +#define U32_ATTR_POLICE 0x080 +#define U32_ATTR_INDEV 0x100 +/** @endcond */ + +static inline struct rtnl_u32 *u32_cls(struct rtnl_cls *cls) +{ + return (struct rtnl_u32 *) cls->c_subdata; +} + +static inline struct rtnl_u32 *u32_alloc(struct rtnl_cls *cls) +{ + if (!cls->c_subdata) + cls->c_subdata = calloc(1, sizeof(struct rtnl_u32)); + + return u32_cls(cls); +} + +static inline struct tc_u32_sel *u32_selector(struct rtnl_u32 *u) +{ + return (struct tc_u32_sel *) u->cu_selector->d_data; +} + +static inline struct tc_u32_sel *u32_selector_alloc(struct rtnl_u32 *u) +{ + if (!u->cu_selector) + u->cu_selector = nl_data_alloc(NULL, sizeof(struct tc_u32_sel)); + + return u32_selector(u); +} + +static struct nla_policy u32_policy[TCA_U32_MAX+1] = { + [TCA_U32_DIVISOR] = { .type = NLA_U32 }, + [TCA_U32_HASH] = { .type = NLA_U32 }, + [TCA_U32_CLASSID] = { .type = NLA_U32 }, + [TCA_U32_LINK] = { .type = NLA_U32 }, + [TCA_U32_INDEV] = { .type = NLA_STRING, + .maxlen = IFNAMSIZ }, + [TCA_U32_SEL] = { .minlen = sizeof(struct tc_u32_sel) }, + [TCA_U32_PCNT] = { .minlen = sizeof(struct tc_u32_pcnt) }, +}; + +static int u32_msg_parser(struct rtnl_cls *cls) +{ + int err; + struct nlattr *tb[TCA_U32_MAX + 1]; + struct rtnl_u32 *u; + + err = tca_parse(tb, TCA_U32_MAX, (struct rtnl_tca *) cls, u32_policy); + if (err < 0) + return err; + + u = u32_alloc(cls); + if (!u) + goto errout_nomem; + + if (tb[TCA_U32_DIVISOR]) { + u->cu_divisor = nla_get_u32(tb[TCA_U32_DIVISOR]); + u->cu_mask |= U32_ATTR_DIVISOR; + } + + if (tb[TCA_U32_SEL]) { + u->cu_selector = nla_get_data(tb[TCA_U32_SEL]); + if (!u->cu_selector) + goto errout_nomem; + u->cu_mask |= U32_ATTR_SELECTOR; + } + + if (tb[TCA_U32_HASH]) { + u->cu_hash = nla_get_u32(tb[TCA_U32_HASH]); + u->cu_mask |= U32_ATTR_HASH; + } + + if (tb[TCA_U32_CLASSID]) { + u->cu_classid = nla_get_u32(tb[TCA_U32_CLASSID]); + u->cu_mask |= U32_ATTR_CLASSID; + } + + if (tb[TCA_U32_LINK]) { + u->cu_link = nla_get_u32(tb[TCA_U32_LINK]); + u->cu_mask |= U32_ATTR_LINK; + } + + if (tb[TCA_U32_ACT]) { + u->cu_act = nla_get_data(tb[TCA_U32_ACT]); + if (!u->cu_act) + goto errout_nomem; + u->cu_mask |= U32_ATTR_ACTION; + } + + if (tb[TCA_U32_POLICE]) { + u->cu_police = nla_get_data(tb[TCA_U32_POLICE]); + if (!u->cu_police) + goto errout_nomem; + u->cu_mask |= U32_ATTR_POLICE; + } + + if (tb[TCA_U32_PCNT]) { + struct tc_u32_sel *sel; + int pcnt_size; + + if (!tb[TCA_U32_SEL]) { + err = nl_error(EINVAL, "Missing TCA_U32_SEL required " + "for TCA_U32_PCNT"); + goto errout; + } + + sel = u->cu_selector->d_data; + pcnt_size = sizeof(struct tc_u32_pcnt) + + (sel->nkeys * sizeof(uint64_t)); + if (nla_len(tb[TCA_U32_PCNT]) < pcnt_size) { + err = nl_error(EINVAL, "Invalid size for TCA_U32_PCNT"); + goto errout; + } + + u->cu_pcnt = nla_get_data(tb[TCA_U32_PCNT]); + if (!u->cu_pcnt) + goto errout_nomem; + u->cu_mask |= U32_ATTR_PCNT; + } + + if (tb[TCA_U32_INDEV]) { + nla_strlcpy(u->cu_indev, tb[TCA_U32_INDEV], IFNAMSIZ); + u->cu_mask |= U32_ATTR_INDEV; + } + + return 0; + +errout_nomem: + err = nl_errno(ENOMEM); +errout: + return err; +} + +static void u32_free_data(struct rtnl_cls *cls) +{ + struct rtnl_u32 *u = u32_cls(cls); + + if (!u) + return; + + nl_data_free(u->cu_selector); + nl_data_free(u->cu_act); + nl_data_free(u->cu_police); + nl_data_free(u->cu_pcnt); + + free(cls->c_subdata); +} + +static int u32_dump_brief(struct rtnl_cls *cls, struct nl_dump_params *p, + int line) +{ + struct rtnl_u32 *u = u32_cls(cls); + char buf[32]; + + if (!u) + goto ignore; + + if (u->cu_mask & U32_ATTR_DIVISOR) + dp_dump(p, " divisor %u", u->cu_divisor); + else if (u->cu_mask & U32_ATTR_CLASSID) + dp_dump(p, " target %s", + rtnl_tc_handle2str(u->cu_classid, buf, sizeof(buf))); + +ignore: + return line; +} + +static int print_selector(struct nl_dump_params *p, struct tc_u32_sel *sel, + struct rtnl_cls *cls, struct rtnl_u32 *u, int line) +{ + int i; + struct tc_u32_key *key; + + if (sel->hmask || sel->hoff) { + /* I guess this will never be used since the kernel only + * exports the selector if no divisor is set but hash offset + * and hash mask make only sense in hash filters with divisor + * set */ + dp_dump(p, " hash at %u & 0x%x", sel->hoff, sel->hmask); + } + + if (sel->flags & (TC_U32_OFFSET | TC_U32_VAROFFSET)) { + dp_dump(p, " offset at %u", sel->off); + + if (sel->flags & TC_U32_VAROFFSET) + dp_dump(p, " variable (at %u & 0x%x) >> %u", + sel->offoff, ntohs(sel->offmask), sel->offshift); + } + + if (sel->flags) { + int flags = sel->flags; + dp_dump(p, " <"); + +#define PRINT_FLAG(f) if (flags & TC_U32_##f) { \ + flags &= ~TC_U32_##f; dp_dump(p, #f "%s", flags ? "," : ""); } + + PRINT_FLAG(TERMINAL); + PRINT_FLAG(OFFSET); + PRINT_FLAG(VAROFFSET); + PRINT_FLAG(EAT); +#undef PRINT_FLAG + + dp_dump(p, ">"); + } + + + for (i = 0; i < sel->nkeys; i++) { + key = (struct tc_u32_key *) ((char *) sel + sizeof(*sel)); + + dp_dump(p, "\n"); + dp_dump_line(p, line++, " match key at %s%u ", + key->offmask ? "nexthdr+" : "", key->off); + + if (key->offmask) + dp_dump(p, "[0x%u] ", key->offmask); + + dp_dump(p, "& 0x%08x == 0x%08x", ntohl(key->mask), ntohl(key->val)); + + if (p->dp_type == NL_DUMP_STATS && + (u->cu_mask & U32_ATTR_PCNT)) { + struct tc_u32_pcnt *pcnt = u->cu_pcnt->d_data; + dp_dump(p, " successful %" PRIu64, pcnt->kcnts[i]); + } + } + + return line; +} + + +static int u32_dump_full(struct rtnl_cls *cls, struct nl_dump_params *p, + int line) +{ + struct rtnl_u32 *u = u32_cls(cls); + struct tc_u32_sel *s; + + if (!u) + goto ignore; + + if (!(u->cu_mask & U32_ATTR_SELECTOR)) { + dp_dump(p, "no-selector\n"); + return line; + } + + s = u->cu_selector->d_data; + + dp_dump(p, "nkeys %u ", s->nkeys); + + if (u->cu_mask & U32_ATTR_HASH) + dp_dump(p, "ht key 0x%x hash 0x%u", + TC_U32_USERHTID(u->cu_hash), TC_U32_HASH(u->cu_hash)); + + if (u->cu_mask & U32_ATTR_LINK) + dp_dump(p, "link %u ", u->cu_link); + + if (u->cu_mask & U32_ATTR_INDEV) + dp_dump(p, "indev %s ", u->cu_indev); + + line = print_selector(p, s, cls, u, line); + dp_dump(p, "\n"); + +ignore: + return line; + +#if 0 +#define U32_ATTR_ACTION 0x040 +#define U32_ATTR_POLICE 0x080 + + struct nl_data act; + struct nl_data police; +#endif +} + +static int u32_dump_stats(struct rtnl_cls *cls, struct nl_dump_params *p, + int line) +{ + struct rtnl_u32 *u = u32_cls(cls); + + if (!u) + goto ignore; + + if (u->cu_mask & U32_ATTR_PCNT) { + struct tc_u32_pcnt *pc = u->cu_pcnt->d_data; + dp_dump(p, "\n"); + dp_dump_line(p, line++, "%s successful hits\n"); + dp_dump_line(p, line++, "%s %8llu %8llu\n", + pc->rhit, pc->rcnt); + } + +ignore: + return line; +} + +static struct nl_msg *u32_get_opts(struct rtnl_cls *cls) +{ + struct rtnl_u32 *u; + struct nl_msg *msg; + + u = u32_cls(cls); + if (!u) + return NULL; + + msg = nlmsg_build_no_hdr(); + if (!msg) + return NULL; + + if (u->cu_mask & U32_ATTR_DIVISOR) + nla_put_u32(msg, TCA_U32_DIVISOR, u->cu_divisor); + + if (u->cu_mask & U32_ATTR_HASH) + nla_put_u32(msg, TCA_U32_HASH, u->cu_hash); + + if (u->cu_mask & U32_ATTR_CLASSID) + nla_put_u32(msg, TCA_U32_CLASSID, u->cu_classid); + + if (u->cu_mask & U32_ATTR_LINK) + nla_put_u32(msg, TCA_U32_LINK, u->cu_link); + + if (u->cu_mask & U32_ATTR_SELECTOR) + nla_put_data(msg, TCA_U32_SEL, u->cu_selector); + + if (u->cu_mask & U32_ATTR_ACTION) + nla_put_data(msg, TCA_U32_ACT, u->cu_act); + + if (u->cu_mask & U32_ATTR_POLICE) + nla_put_data(msg, TCA_U32_POLICE, u->cu_police); + + if (u->cu_mask & U32_ATTR_INDEV) + nla_put_string(msg, TCA_U32_INDEV, u->cu_indev); + + return msg; +} + +/** + * @name Attribute Modifications + * @{ + */ + +void rtnl_u32_set_handle(struct rtnl_cls *cls, int htid, int hash, + int nodeid) +{ + uint32_t handle = (htid << 20) | (hash << 12) | nodeid; + + tca_set_handle((struct rtnl_tca *) cls, handle ); +} + +int rtnl_u32_set_classid(struct rtnl_cls *cls, uint32_t classid) +{ + struct rtnl_u32 *u; + + u = u32_alloc(cls); + if (!u) + return nl_errno(ENOMEM); + + u->cu_classid = classid; + u->cu_mask |= U32_ATTR_CLASSID; + + return 0; +} + +/** @} */ + +/** + * @name Selector Modifications + * @{ + */ + +int rtnl_u32_set_flags(struct rtnl_cls *cls, int flags) +{ + struct tc_u32_sel *sel; + struct rtnl_u32 *u; + + u = u32_alloc(cls); + if (!u) + return nl_errno(ENOMEM); + + sel = u32_selector_alloc(u); + if (!sel) + return nl_errno(ENOMEM); + + sel->flags |= flags; + u->cu_mask |= U32_ATTR_SELECTOR; + + return 0; +} + +/** + * Append new 32-bit key to the selector + * + * @arg cls classifier to be modifier + * @arg val value to be matched (network byte-order) + * @arg mask mask to be applied before matching (network byte-order) + * @arg off offset, in bytes, to start matching + * @arg offmask offset mask + * + * General selectors define the pattern, mask and offset the pattern will be + * matched to the packet contents. Using the general selectors you can match + * virtually any single bit in the IP (or upper layer) header. + * +*/ +int rtnl_u32_add_key(struct rtnl_cls *cls, uint32_t val, uint32_t mask, + int off, int offmask) +{ + struct tc_u32_sel *sel; + struct rtnl_u32 *u; + int err; + + u = u32_alloc(cls); + if (!u) + return nl_errno(ENOMEM); + + sel = u32_selector_alloc(u); + if (!sel) + return nl_errno(ENOMEM); + + err = nl_data_append(u->cu_selector, NULL, sizeof(struct tc_u32_key)); + if (err < 0) + return err; + + /* the selector might have been moved by realloc */ + sel = u32_selector(u); + + sel->keys[sel->nkeys].mask = mask; + sel->keys[sel->nkeys].val = val & mask; + sel->keys[sel->nkeys].off = off; + sel->keys[sel->nkeys].offmask = offmask; + sel->nkeys++; + u->cu_mask |= U32_ATTR_SELECTOR; + + return 0; +} + +int rtnl_u32_add_key_uint8(struct rtnl_cls *cls, uint8_t val, uint8_t mask, + int off, int offmask) +{ + int shift = 24 - 8 * (off & 3); + + return rtnl_u32_add_key(cls, htonl((uint32_t)val << shift), + htonl((uint32_t)mask << shift), + off & ~3, offmask); +} + +/** + * Append new selector key to match a 16-bit number + * + * @arg cls classifier to be modified + * @arg val value to be matched (host byte-order) + * @arg mask mask to be applied before matching (host byte-order) + * @arg off offset, in bytes, to start matching + * @arg offmask offset mask +*/ +int rtnl_u32_add_key_uint16(struct rtnl_cls *cls, uint16_t val, uint16_t mask, + int off, int offmask) +{ + int shift = ((off & 3) == 0 ? 16 : 0); + if (off % 2) + return nl_error(EINVAL, "Invalid offset alignment"); + + return rtnl_u32_add_key(cls, htonl((uint32_t)val << shift), + htonl((uint32_t)mask << shift), + off & ~3, offmask); +} + +/** + * Append new selector key to match a 32-bit number + * + * @arg cls classifier to be modified + * @arg val value to be matched (host byte-order) + * @arg mask mask to be applied before matching (host byte-order) + * @arg off offset, in bytes, to start matching + * @arg offmask offset mask +*/ +int rtnl_u32_add_key_uint32(struct rtnl_cls *cls, uint32_t val, uint32_t mask, + int off, int offmask) +{ + return rtnl_u32_add_key(cls, htonl(val), htonl(mask), + off & ~3, offmask); +} + +int rtnl_u32_add_key_in_addr(struct rtnl_cls *cls, struct in_addr *addr, + uint8_t bitmask, int off, int offmask) +{ + uint32_t mask = 0xFFFFFFFF << (32 - bitmask); + return rtnl_u32_add_key(cls, addr->s_addr, htonl(mask), off, offmask); +} + +int rtnl_u32_add_key_in6_addr(struct rtnl_cls *cls, struct in6_addr *addr, + uint8_t bitmask, int off, int offmask) +{ + int i; + + for (i = 1; i <= 4; i++) { + if (32 * i - bitmask <= 0) + return rtnl_u32_add_key(cls, addr->s6_addr32[i-1], + 0xFFFFFFFF, off, offmask ); + else if (32 * i - bitmask < 32) { + uint32_t mask = 0xFFFFFFFF << (32 * i - bitmask); + return rtnl_u32_add_key(cls, addr->s6_addr32[i-1], + htonl(mask), off, offmask ); + } + /* otherwise, if (32*i - bitmask >= 32) no key is generated */ + } + + return 0; +} + +/** @} */ + +static struct rtnl_cls_ops u32_ops = { + .co_kind = "u32", + .co_msg_parser = u32_msg_parser, + .co_free_data = u32_free_data, + .co_get_opts = u32_get_opts, + .co_dump[NL_DUMP_BRIEF] = u32_dump_brief, + .co_dump[NL_DUMP_FULL] = u32_dump_full, + .co_dump[NL_DUMP_STATS] = u32_dump_stats, +}; + +static void __init u32_init(void) +{ + rtnl_cls_register(&u32_ops); +} + +static void __exit u32_exit(void) +{ + rtnl_cls_unregister(&u32_ops); +} + +/** @} */ diff --git a/lib/route/link.c b/lib/route/link.c new file mode 100644 index 0000000..9c0f68d --- /dev/null +++ b/lib/route/link.c @@ -0,0 +1,1460 @@ +/* + * lib/route/link.c Links (Interfaces) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup rtnl + * @defgroup link Links (Interfaces) + * @brief + * + * @par Link Identification + * A link can be identified by either its interface index or by its + * name. The kernel favours the interface index but falls back to the + * interface name if the interface index is lesser-than 0 for kernels + * >= 2.6.11. Therefore you can request changes without mapping a + * interface name to the corresponding index first. + * + * @par Changeable Attributes + * @anchor link_changeable + * - Link layer address + * - Link layer broadcast address + * - device mapping (ifmap) (>= 2.6.9) + * - MTU (>= 2.6.9) + * - Transmission queue length (>= 2.6.9) + * - Weight (>= 2.6.9) + * - Link name (only via access through interface index) (>= 2.6.9) + * - Flags (>= 2.6.9) + * - IFF_DEBUG + * - IFF_NOTRAILERS + * - IFF_NOARP + * - IFF_DYNAMIC + * - IFF_MULTICAST + * - IFF_PORTSEL + * - IFF_AUTOMEDIA + * - IFF_UP + * - IFF_PROMISC + * - IFF_ALLMULTI + * + * @par Link Flags (linux/if.h) + * @anchor link_flags + * @code + * IFF_UP Status of link (up|down) + * IFF_BROADCAST Indicates this link allows broadcasting + * IFF_MULTICAST Indicates this link allows multicasting + * IFF_ALLMULTI Indicates this link is doing multicast routing + * IFF_DEBUG Tell the driver to do debugging (currently unused) + * IFF_LOOPBACK This is the loopback link + * IFF_POINTOPOINT Point-to-point link + * IFF_NOARP Link is unable to perform ARP + * IFF_PROMISC Status of promiscious mode flag + * IFF_MASTER Used by teql + * IFF_SLAVE Used by teql + * IFF_PORTSEL Indicates this link allows port selection + * IFF_AUTOMEDIA Indicates this link selects port automatically + * IFF_DYNAMIC Indicates the address of this link is dynamic + * IFF_RUNNING Link is running and carrier is ok. + * IFF_NOTRAILERS Unused, BSD compat. + * @endcode + * + * @par Notes on IFF_PROMISC and IFF_ALLMULTI flags + * Although you can query the status of IFF_PROMISC and IFF_ALLMULTI + * they do not represent the actual state in the kernel but rather + * whether the flag has been enabled/disabled by userspace. The link + * may be in promiscious mode even if IFF_PROMISC is not set in a link + * dump request response because promiscity might be needed by the driver + * for a period of time. + * + * @par 1) Retrieving information about available links + * @code + * // The first step is to retrieve a list of all available interfaces within + * // the kernel and put them into a cache. + * struct nl_cache *cache = rtnl_link_alloc_cache(nl_handle); + * + * // In a second step, a specific link may be looked up by either interface + * // index or interface name. + * struct rtnl_link *link = rtnl_link_get_by_name(cache, "lo"); + * + * // rtnl_link_get_by_name() is the short version for translating the + * // interface name to an interface index first like this: + * int ifindex = rtnl_link_name2i(cache, "lo"); + * struct rtnl_link *link = rtnl_link_get(cache, ifindex); + * + * // After successful usage, the object must be given back to the cache + * rtnl_link_put(link); + * @endcode + * + * @par 2) Changing link attributes + * @code + * // In order to change any attributes of an existing link, we must allocate + * // a new link to hold the change requests: + * struct rtnl_link *request = rtnl_link_alloc(); + * + * // Now we can go on and specify the attributes we want to change: + * rtnl_link_set_weight(request, 300); + * rtnl_link_set_mtu(request, 1360); + * + * // We can also shut an interface down administratively + * rtnl_link_unset_flags(request, rtnl_link_str2flags("up")); + * + * // Actually, we should know which link to change, so let's look it up + * struct rtnl_link *old = rtnl_link_get(cache, "eth0"); + * + * // Two ways exist to commit this change request, the first one is to + * // build the required netlink message and send it out in one single + * // step: + * rtnl_link_change(nl_handle, old, request); + * + * // An alternative way is to build the netlink message and send it + * // out yourself using nl_send_auto_complete() + * struct nl_msg *msg = rtnl_link_build_change_request(old, request); + * nl_send_auto_complete(nl_handle, nlmsg_hdr(msg)); + * nlmsg_free(msg); + * + * // Don't forget to give back the link object ;-> + * rtnl_link_put(old); + * @endcode + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define LINK_ATTR_MTU 0x0001 +#define LINK_ATTR_LINK 0x0002 +#define LINK_ATTR_TXQLEN 0x0004 +#define LINK_ATTR_WEIGHT 0x0008 +#define LINK_ATTR_MASTER 0x0010 +#define LINK_ATTR_QDISC 0x0020 +#define LINK_ATTR_MAP 0x0040 +#define LINK_ATTR_ADDR 0x0080 +#define LINK_ATTR_BRD 0x0100 +#define LINK_ATTR_FLAGS 0x0200 +#define LINK_ATTR_IFNAME 0x0400 +#define LINK_ATTR_IFINDEX 0x0800 +#define LINK_ATTR_FAMILY 0x1000 +#define LINK_ATTR_ARPTYPE 0x2000 +#define LINK_ATTR_STATS 0x4000 +#define LINK_ATTR_CHANGE 0x8000 + +static struct nl_cache_ops rtnl_link_ops; +/** @endcond */ + +static void link_free_data(struct nl_object *c) +{ + struct rtnl_link *link = nl_object_priv(c); + + if (link) { + nl_addr_put(link->l_addr); + nl_addr_put(link->l_bcast); + } +} + +static struct nla_policy link_policy[IFLA_MAX+1] = { + [IFLA_IFNAME] = { .type = NLA_STRING, + .maxlen = IFNAMSIZ }, + [IFLA_MTU] = { .type = NLA_U32 }, + [IFLA_TXQLEN] = { .type = NLA_U32 }, + [IFLA_LINK] = { .type = NLA_U32 }, + [IFLA_WEIGHT] = { .type = NLA_U32 }, + [IFLA_MASTER] = { .type = NLA_U32 }, + [IFLA_QDISC] = { .type = NLA_STRING, + .maxlen = IFQDISCSIZ }, + [IFLA_STATS] = { .minlen = sizeof(struct rtnl_link_stats) }, + [IFLA_MAP] = { .minlen = sizeof(struct rtnl_link_ifmap) }, +}; + +static int link_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *n, + void *arg) +{ + struct rtnl_link *link; + struct ifinfomsg *ifi; + struct nlattr *tb[IFLA_MAX+1]; + struct nl_parser_param *pp = arg; + int err; + + link = rtnl_link_alloc(); + if (link == NULL) { + err = nl_errno(ENOMEM); + goto errout; + } + + link->ce_msgtype = n->nlmsg_type; + + err = nlmsg_parse(n, sizeof(*ifi), tb, IFLA_MAX, link_policy); + if (err < 0) + goto errout; + + if (tb[IFLA_IFNAME] == NULL) { + err = nl_error(EINVAL, "Missing link name TLV"); + goto errout; + } + + nla_strlcpy(link->l_name, tb[IFLA_IFNAME], IFNAMSIZ); + + ifi = nlmsg_data(n); + link->l_family = ifi->ifi_family; + link->l_arptype = ifi->ifi_type; + link->l_index = ifi->ifi_index; + link->l_flags = ifi->ifi_flags; + link->l_change = ifi->ifi_change; + link->l_mask = (LINK_ATTR_IFNAME | LINK_ATTR_FAMILY | LINK_ATTR_ARPTYPE| + LINK_ATTR_IFINDEX | LINK_ATTR_FLAGS | LINK_ATTR_CHANGE); + + if (tb[IFLA_STATS]) { + struct rtnl_link_stats *st = nla_data(tb[IFLA_STATS]); + + link->l_stats[RTNL_LINK_RX_PACKETS] = st->rx_packets; + link->l_stats[RTNL_LINK_RX_BYTES] = st->rx_bytes; + link->l_stats[RTNL_LINK_RX_ERRORS] = st->rx_errors; + link->l_stats[RTNL_LINK_RX_DROPPED] = st->rx_dropped; + link->l_stats[RTNL_LINK_RX_COMPRESSED] = st->rx_compressed; + link->l_stats[RTNL_LINK_RX_FIFO_ERR] = st->rx_fifo_errors; + link->l_stats[RTNL_LINK_TX_PACKETS] = st->tx_packets; + link->l_stats[RTNL_LINK_TX_BYTES] = st->tx_bytes; + link->l_stats[RTNL_LINK_TX_ERRORS] = st->tx_errors; + link->l_stats[RTNL_LINK_TX_DROPPED] = st->tx_dropped; + link->l_stats[RTNL_LINK_TX_COMPRESSED] = st->tx_compressed; + link->l_stats[RTNL_LINK_TX_FIFO_ERR] = st->tx_fifo_errors; + link->l_stats[RTNL_LINK_RX_LEN_ERR] = st->rx_length_errors; + link->l_stats[RTNL_LINK_RX_OVER_ERR] = st->rx_over_errors; + link->l_stats[RTNL_LINK_RX_CRC_ERR] = st->rx_crc_errors; + link->l_stats[RTNL_LINK_RX_FRAME_ERR] = st->rx_frame_errors; + link->l_stats[RTNL_LINK_RX_MISSED_ERR] = st->rx_missed_errors; + link->l_stats[RTNL_LINK_TX_ABORT_ERR] = st->tx_aborted_errors; + link->l_stats[RTNL_LINK_TX_CARRIER_ERR] = st->tx_carrier_errors; + link->l_stats[RTNL_LINK_TX_HBEAT_ERR] = st->tx_heartbeat_errors; + link->l_stats[RTNL_LINK_TX_WIN_ERR] = st->tx_window_errors; + link->l_stats[RTNL_LINK_MULTICAST] = st->multicast; + + link->l_mask |= LINK_ATTR_STATS; + } + + if (tb[IFLA_TXQLEN]) { + link->l_txqlen = nla_get_u32(tb[IFLA_TXQLEN]); + link->l_mask |= LINK_ATTR_TXQLEN; + } + + if (tb[IFLA_MTU]) { + link->l_mtu = nla_get_u32(tb[IFLA_MTU]); + link->l_mask |= LINK_ATTR_MTU; + } + + if (tb[IFLA_ADDRESS]) { + link->l_addr = nla_get_addr(tb[IFLA_ADDRESS], AF_UNSPEC); + if (link->l_addr == NULL) + goto errout; + nl_addr_set_family(link->l_addr, + nl_addr_guess_family(link->l_addr)); + link->l_mask |= LINK_ATTR_ADDR; + } + + if (tb[IFLA_BROADCAST]) { + link->l_bcast = nla_get_addr(tb[IFLA_BROADCAST], AF_UNSPEC); + if (link->l_bcast == NULL) + goto errout; + nl_addr_set_family(link->l_bcast, + nl_addr_guess_family(link->l_bcast)); + link->l_mask |= LINK_ATTR_BRD; + } + + if (tb[IFLA_LINK]) { + link->l_link = nla_get_u32(tb[IFLA_LINK]); + link->l_mask |= LINK_ATTR_LINK; + } + + if (tb[IFLA_WEIGHT]) { + link->l_weight = nla_get_u32(tb[IFLA_WEIGHT]); + link->l_mask |= LINK_ATTR_WEIGHT; + } + + if (tb[IFLA_QDISC]) { + nla_strlcpy(link->l_qdisc, tb[IFLA_QDISC], IFQDISCSIZ); + link->l_mask |= LINK_ATTR_QDISC; + } + + if (tb[IFLA_MAP]) { + struct rtnl_link_ifmap *map = nla_data(tb[IFLA_MAP]); + link->l_map.lm_mem_start = map->mem_start; + link->l_map.lm_mem_end = map->mem_end; + link->l_map.lm_base_addr = map->base_addr; + link->l_map.lm_irq = map->irq; + link->l_map.lm_dma = map->dma; + link->l_map.lm_port = map->port; + link->l_mask |= LINK_ATTR_MAP; + } + + if (tb[IFLA_MASTER]) { + link->l_master = nla_get_u32(tb[IFLA_MASTER]); + link->l_mask |= LINK_ATTR_MASTER; + } + + err = pp->pp_cb((struct nl_object *) link, pp); + if (err < 0) + goto errout; + + return P_ACCEPT; + +errout: + rtnl_link_put(link); + return err; +} + +static int link_request_update(struct nl_cache *c, struct nl_handle *h) +{ + return nl_rtgen_request(h, RTM_GETLINK, AF_UNSPEC, NLM_F_DUMP); +} + +static int link_dump_brief(struct nl_object *obj, struct nl_dump_params *p) +{ + char buf[128]; + struct nl_cache *cache = dp_cache(obj); + struct rtnl_link *link = (struct rtnl_link *) obj; + int line = 1; + + dp_dump(p, "%s ", link->l_name); + + if (link->l_mask & LINK_ATTR_LINK) { + struct rtnl_link *ll = rtnl_link_get(cache, link->l_link); + dp_dump(p, "@%s", ll ? ll->l_name : "NONE"); + if (ll) + rtnl_link_put(ll); + } + + dp_dump(p, "%s ", nl_llproto2str(link->l_arptype, buf, sizeof(buf))); + dp_dump(p, "%s ", link->l_addr ? nl_addr2str(link->l_addr, buf, + sizeof(buf)) : "none"); + dp_dump(p, "mtu %u ", link->l_mtu); + + if (link->l_mask & LINK_ATTR_MASTER) { + struct rtnl_link *master = rtnl_link_get(cache, link->l_master); + dp_dump(p, "master %s ", master ? master->l_name : "inv"); + if (master) + rtnl_link_put(master); + } + + rtnl_link_flags2str(link->l_flags, buf, sizeof(buf)); + if (buf[0]) + dp_dump(p, "<%s>", buf); + + dp_dump(p, "\n"); + + return line; +} + +static int link_dump_full(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_link *link = (struct rtnl_link *) obj; + char buf[64]; + int line; + + line = link_dump_brief(obj, p); + dp_new_line(p, line++); + + dp_dump(p, " txqlen %u weight %u ", link->l_txqlen, link->l_weight); + + if (link->l_mask & LINK_ATTR_QDISC) + dp_dump(p, "qdisc %s ", link->l_qdisc); + + if (link->l_mask & LINK_ATTR_MAP && link->l_map.lm_irq) + dp_dump(p, "irq %u ", link->l_map.lm_irq); + + if (link->l_mask & LINK_ATTR_IFINDEX) + dp_dump(p, "index %u ", link->l_index); + + if (link->l_mask & LINK_ATTR_BRD) + dp_dump(p, "brd %s", nl_addr2str(link->l_bcast, buf, + sizeof(buf))); + + dp_dump(p, "\n"); + + return line; +} + +static int link_dump_stats(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_link *link = (struct rtnl_link *) obj; + char *unit, fmt[64]; + float res; + int line; + + line = link_dump_full(obj, p); + + dp_dump_line(p, line++, " Stats: bytes packets errors " + " dropped fifo-err compressed\n"); + + res = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_RX_BYTES], &unit); + + strcpy(fmt, " RX %X.2f %s %10llu %10llu %10llu %10llu %10llu\n"); + fmt[9] = *unit == 'B' ? '9' : '7'; + + dp_dump_line(p, line++, fmt, + res, unit, + link->l_stats[RTNL_LINK_RX_PACKETS], + link->l_stats[RTNL_LINK_RX_ERRORS], + link->l_stats[RTNL_LINK_RX_DROPPED], + link->l_stats[RTNL_LINK_RX_FIFO_ERR], + link->l_stats[RTNL_LINK_RX_COMPRESSED]); + + res = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_TX_BYTES], &unit); + + strcpy(fmt, " TX %X.2f %s %10llu %10llu %10llu %10llu %10llu\n"); + fmt[9] = *unit == 'B' ? '9' : '7'; + + dp_dump_line(p, line++, fmt, + res, unit, + link->l_stats[RTNL_LINK_TX_PACKETS], + link->l_stats[RTNL_LINK_TX_ERRORS], + link->l_stats[RTNL_LINK_TX_DROPPED], + link->l_stats[RTNL_LINK_TX_FIFO_ERR], + link->l_stats[RTNL_LINK_TX_COMPRESSED]); + + dp_dump_line(p, line++, " Errors: length over crc " + " frame missed multicast\n"); + + dp_dump_line(p, line++, " RX %10" PRIu64 " %10" PRIu64 " %10" + PRIu64 " %10" PRIu64 " %10" PRIu64 " %10" + PRIu64 "\n", + link->l_stats[RTNL_LINK_RX_LEN_ERR], + link->l_stats[RTNL_LINK_RX_OVER_ERR], + link->l_stats[RTNL_LINK_RX_CRC_ERR], + link->l_stats[RTNL_LINK_RX_FRAME_ERR], + link->l_stats[RTNL_LINK_RX_MISSED_ERR], + link->l_stats[RTNL_LINK_MULTICAST]); + + dp_dump_line(p, line++, " Errors: aborted carrier heartbeat " + " window collision\n"); + + dp_dump_line(p, line++, " TX %10" PRIu64 " %10" PRIu64 " %10" + PRIu64 " %10" PRIu64 " %10" PRIu64 "\n", + link->l_stats[RTNL_LINK_TX_ABORT_ERR], + link->l_stats[RTNL_LINK_TX_CARRIER_ERR], + link->l_stats[RTNL_LINK_TX_HBEAT_ERR], + link->l_stats[RTNL_LINK_TX_WIN_ERR], + link->l_stats[RTNL_LINK_TX_COLLISIONS]); + + return line; +} + +static int link_dump_xml(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_link *link = (struct rtnl_link *) obj; + struct nl_cache *cache = dp_cache(obj); + char buf[128]; + int i, line = 0; + + dp_dump_line(p, line++, "\n", + link->l_name, link->l_index); + dp_dump_line(p, line++, " %s\n", + nl_af2str(link->l_family, buf, sizeof(buf))); + dp_dump_line(p, line++, " %s\n", + nl_llproto2str(link->l_arptype, buf, sizeof(buf))); + dp_dump_line(p, line++, "
%s
\n", + nl_addr2str(link->l_addr, buf, sizeof(buf))); + dp_dump_line(p, line++, " %u\n", link->l_mtu); + dp_dump_line(p, line++, " %u\n", link->l_txqlen); + dp_dump_line(p, line++, " %u\n", link->l_weight); + + rtnl_link_flags2str(link->l_flags, buf, sizeof(buf)); + if (buf[0]) + dp_dump_line(p, line++, " %s\n", buf); + + if (link->l_mask & LINK_ATTR_QDISC) + dp_dump_line(p, line++, " %s\n", link->l_qdisc); + + if (link->l_mask & LINK_ATTR_LINK) { + struct rtnl_link *ll = rtnl_link_get(cache, link->l_link); + dp_dump_line(p, line++, " %s\n", + ll ? ll->l_name : "none"); + if (ll) + rtnl_link_put(ll); + } + + if (link->l_mask & LINK_ATTR_MASTER) { + struct rtnl_link *master = rtnl_link_get(cache, link->l_master); + dp_dump_line(p, line++, " %s\n", + master ? master->l_name : "none"); + if (master) + rtnl_link_put(master); + } + + if (link->l_mask & LINK_ATTR_BRD) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(link->l_bcast, buf, sizeof(buf))); + + if (link->l_mask & LINK_ATTR_STATS) { + dp_dump_line(p, line++, " \n"); + for (i = 0; i <= RTNL_LINK_STATS_MAX; i++) { + rtnl_link_stat2str(i, buf, sizeof(buf)); + dp_dump_line(p, line++, + " <%s>%" PRIu64 "\n", + buf, link->l_stats[i], buf); + } + dp_dump_line(p, line++, " \n"); + } + + dp_dump_line(p, line++, "\n"); + +#if 0 + uint32_t l_change; /**< Change mask */ + struct rtnl_lifmap l_map; /**< Interface device mapping */ +#endif + + return line; +} + +static int link_dump_env(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_link *link = (struct rtnl_link *) obj; + struct nl_cache *cache = dp_cache(obj); + char buf[128]; + int i, line = 0; + + dp_dump_line(p, line++, "LINK_NAME=%s\n", link->l_name); + dp_dump_line(p, line++, "LINK_IFINDEX=%u\n", link->l_index); + dp_dump_line(p, line++, "LINK_FAMILY=%s\n", + nl_af2str(link->l_family, buf, sizeof(buf))); + dp_dump_line(p, line++, "LINK_TYPE=%s\n", + nl_llproto2str(link->l_arptype, buf, sizeof(buf))); + if (link->l_mask & LINK_ATTR_ADDR) + dp_dump_line(p, line++, "LINK_ADDRESS=%s\n", + nl_addr2str(link->l_addr, buf, sizeof(buf))); + dp_dump_line(p, line++, "LINK_MTU=%u\n", link->l_mtu); + dp_dump_line(p, line++, "LINK_TXQUEUELEN=%u\n", link->l_txqlen); + dp_dump_line(p, line++, "LINK_WEIGHT=%u\n", link->l_weight); + + rtnl_link_flags2str(link->l_flags & ~IFF_RUNNING, buf, sizeof(buf)); + if (buf[0]) + dp_dump_line(p, line++, "LINK_FLAGS=%s\n", buf); + + if (link->l_mask & LINK_ATTR_QDISC) + dp_dump_line(p, line++, "LINK_QDISC=%s\n", link->l_qdisc); + + if (link->l_mask & LINK_ATTR_LINK) { + struct rtnl_link *ll = rtnl_link_get(cache, link->l_link); + + dp_dump_line(p, line++, "LINK_LINK_IFINDEX=%d\n", link->l_link); + if (ll) { + dp_dump_line(p, line++, "LINK_LINK_IFNAME=%s\n", + ll->l_name); + rtnl_link_put(ll); + } + } + + if (link->l_mask & LINK_ATTR_MASTER) { + struct rtnl_link *master = rtnl_link_get(cache, link->l_master); + dp_dump_line(p, line++, "LINK_MASTER=%s\n", + master ? master->l_name : "none"); + if (master) + rtnl_link_put(master); + } + + if (link->l_mask & LINK_ATTR_BRD) + dp_dump_line(p, line++, "LINK_BROADCAST=%s\n", + nl_addr2str(link->l_bcast, buf, sizeof(buf))); + + if (link->l_mask & LINK_ATTR_STATS) { + for (i = 0; i <= RTNL_LINK_STATS_MAX; i++) { + char *c = buf; + + sprintf(buf, "LINK_"); + rtnl_link_stat2str(i, buf + 5, sizeof(buf) - 5); + while (*c) { + *c = toupper(*c); + c++; + } + dp_dump_line(p, line++, + "%s=%" PRIu64 "\n", buf, link->l_stats[i]); + } + } + + return line; +} + +#if 0 +static int link_handle_event(struct nl_object *a, struct rtnl_link_event_cb *cb) +{ + struct rtnl_link *l = (struct rtnl_link *) a; + struct nl_cache *c = dp_cache(a); + int nevents = 0; + + if (l->l_change == ~0U) { + if (l->ce_msgtype == RTM_NEWLINK) + cb->le_register(l); + else + cb->le_unregister(l); + + return 1; + } + + if (l->l_change & IFF_SLAVE) { + if (l->l_flags & IFF_SLAVE) { + struct rtnl_link *m = rtnl_link_get(c, l->l_master); + cb->le_new_bonding(l, m); + if (m) + rtnl_link_put(m); + } else + cb->le_cancel_bonding(l); + } + +#if 0 + if (l->l_change & IFF_UP && l->l_change & IFF_RUNNING) + dp_dump_line(p, line++, "link %s changed state to %s.\n", + l->l_name, l->l_flags & IFF_UP ? "up" : "down"); + + if (l->l_change & IFF_PROMISC) { + dp_new_line(p, line++); + dp_dump(p, "link %s %s promiscuous mode.\n", + l->l_name, l->l_flags & IFF_PROMISC ? "entered" : "left"); + } + + if (line == 0) + dp_dump_line(p, line++, "link %s sent unknown event.\n", + l->l_name); +#endif + + return nevents; +} +#endif + +static int link_filter(struct nl_object *obj, struct nl_object *filter) +{ + struct rtnl_link *o = (struct rtnl_link *) obj; + struct rtnl_link *f = (struct rtnl_link *) filter; + +#define REQ(F) (f->l_mask & LINK_ATTR_##F) +#define AVAIL(F) (o->l_mask & LINK_ATTR_##F) +#define F_CUS(F, EXPR) (REQ(F) && (!AVAIL(F) || (EXPR))) +#define F_INT(F, N) (REQ(F) && (!AVAIL(F) || (o->N != f->N))) + if (F_INT(MTU, l_mtu) || + F_INT(LINK, l_link) || + F_INT(TXQLEN, l_txqlen) || + F_INT(WEIGHT, l_weight) || + F_INT(MASTER, l_master) || + F_INT(IFINDEX, l_index) || + F_INT(FAMILY, l_family) || + F_CUS(QDISC, strcmp(o->l_qdisc, f->l_qdisc)) || + F_CUS(IFNAME, strcmp(o->l_name, f->l_name)) || + F_CUS(ADDR, nl_addr_cmp(o->l_addr, f->l_addr)) || + F_CUS(BRD, nl_addr_cmp(o->l_bcast, f->l_bcast)) || + F_CUS(FLAGS, f->l_flags ^ (o->l_flags & f->l_flag_mask))) + return 0; +#undef REQ +#undef AVAIL +#undef F_CUS +#undef F_INT + + return 1; +} + +/** + * @name Link Object Allocation/Freeage + * @{ + */ + +/** + * Allocate and initialize new link object. + * @note Free the memory after usage using rtnl_link_put() or rtnl_link_free(). + * @return Newly allocated link object or NULL if an error occured. + */ +struct rtnl_link *rtnl_link_alloc(void) +{ + return (struct rtnl_link *) nl_object_alloc_from_ops(&rtnl_link_ops); +} + +/** + * Give back reference on link object. + * @arg link Link object to be given back. + * + * Decrements the reference counter and frees the object if the + * last reference has been released. + */ +void rtnl_link_put(struct rtnl_link *link) +{ + nl_object_put((struct nl_object *) link); +} +/** + * Free link object. + * @arg link Link object to be freed. + * + * @note Always use rtnl_link_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void rtnl_link_free(struct rtnl_link *link) +{ + nl_object_free((struct nl_object *) link); +} + +/** @} */ + +/** + * @name Link Cache Management + * @{ + */ + + +/** + * Allocate link cache and fill in all configured links. + * @arg handle Netlink handle. + * + * Allocates a new link cache, initializes it properly and updates it + * to include all links currently configured in the kernel. + * + * @note Free the memory after usage. + * @return Newly allocated cache or NULL if an error occured. + */ +struct nl_cache *rtnl_link_alloc_cache(struct nl_handle *handle) +{ + struct nl_cache * cache; + + cache = nl_cache_alloc_from_ops(&rtnl_link_ops); + if (cache == NULL) + return NULL; + + if (nl_cache_update(handle, cache) < 0) { + nl_cache_free(cache); + return NULL; + } + + return cache; +} + +/** + * Look up link by interface index in the provided cache + * @arg cache link cache + * @arg ifindex link interface index + * + * The caller owns a reference on the returned object and + * must give the object back via rtnl_link_put(). + * + * @return pointer to link inside the cache or NULL if no match was found. + */ +struct rtnl_link *rtnl_link_get(struct nl_cache *cache, int ifindex) +{ + struct rtnl_link *link; + + if (cache->c_ops != &rtnl_link_ops) + return NULL; + + nl_list_for_each_entry(link, &cache->c_items, ce_list) { + if (link->l_index == ifindex) { + nl_object_get((struct nl_object *) link); + return link; + } + } + + return NULL; +} + +/** + * Look up link by link name in the provided cache + * @arg cache link cache + * @arg name link name + * + * The caller owns a reference on the returned object and + * must give the object back via rtnl_link_put(). + * + * @return pointer to link inside the cache or NULL if no match was found. + */ +struct rtnl_link *rtnl_link_get_by_name(struct nl_cache *cache, + const char *name) +{ + struct rtnl_link *link; + + if (cache->c_ops != &rtnl_link_ops) + return NULL; + + nl_list_for_each_entry(link, &cache->c_items, ce_list) { + if (!strcmp(name, link->l_name)) { + nl_object_get((struct nl_object *) link); + return link; + } + } + + return NULL; +} + +/** @} */ + +/** + * @name Link Modifications + * @{ + */ + +/** + * Builds a netlink change request message to change link attributes + * @arg old link to be changed + * @arg tmpl template with requested changes + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a change of link attributes. + * The netlink message header isn't fully equipped with all relevant + * fields and must be sent out via nl_send_auto_complete() or + * supplemented as needed. + * \a old must point to a link currently configured in the kernel + * and \a tmpl must contain the attributes to be changed set via + * \c rtnl_link_set_* functions. + * + * @return New netlink message + * @note Not all attributes can be changed, see + * \ref link_changeable "Changeable Attributes" for more details. + */ +struct nl_msg * rtnl_link_build_change_request(struct rtnl_link *old, + struct rtnl_link *tmpl, + int flags) +{ + struct nl_msg *msg; + struct ifinfomsg ifi = { + .ifi_family = old->l_family, + .ifi_index = old->l_index, + }; + + if (tmpl->l_mask & LINK_ATTR_FLAGS) { + ifi.ifi_flags = old->l_flags & ~tmpl->l_flag_mask; + ifi.ifi_flags |= tmpl->l_flags; + } + + msg = nlmsg_build_simple(RTM_SETLINK, flags); + if (!msg) + goto nla_put_failure; + + if (nlmsg_append(msg, &ifi, sizeof(ifi), 1) < 0) + goto nla_put_failure; + + if (tmpl->l_mask & LINK_ATTR_ADDR) + NLA_PUT_ADDR(msg, IFLA_ADDRESS, tmpl->l_addr); + + if (tmpl->l_mask & LINK_ATTR_BRD) + NLA_PUT_ADDR(msg, IFLA_BROADCAST, tmpl->l_bcast); + + if (tmpl->l_mask & LINK_ATTR_MTU) + NLA_PUT_U32(msg, IFLA_MTU, tmpl->l_mtu); + + if (tmpl->l_mask & LINK_ATTR_TXQLEN) + NLA_PUT_U32(msg, IFLA_TXQLEN, tmpl->l_txqlen); + + if (tmpl->l_mask & LINK_ATTR_WEIGHT) + NLA_PUT_U32(msg, IFLA_WEIGHT, tmpl->l_weight); + + if (tmpl->l_mask & LINK_ATTR_IFNAME) + NLA_PUT_STRING(msg, IFLA_IFNAME, tmpl->l_name); + + return msg; + +nla_put_failure: + nlmsg_free(msg); + return NULL; +} + +/** + * Change link attributes + * @arg handle netlink handle + * @arg old link to be changed + * @arg tmpl template with requested changes + * @arg flags additional netlink message flags + * + * Builds a new netlink message by calling rtnl_link_build_change_request(), + * sends the request to the kernel and waits for the next ACK to be + * received, i.e. blocks until the request has been processed. + * + * @return 0 on success or a negative error code + * @note Not all attributes can be changed, see + * \ref link_changeable "Changeable Attributes" for more details. + */ +int rtnl_link_change(struct nl_handle *handle, struct rtnl_link *old, + struct rtnl_link *tmpl, int flags) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_link_build_change_request(old, tmpl, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name Name <-> Index Translations + * @{ + */ + +/** + * Translate an interface index to the corresponding link name + * @arg cache link cache + * @arg ifindex link interface index + * @arg dst destination buffer + * @arg len length of destination buffer + * + * Translates the specified interface index to the corresponding + * link name and stores the name in the destination buffer. + * + * @return link name or NULL if no match was found. + */ +char * rtnl_link_i2name(struct nl_cache *cache, int ifindex, char *dst, + size_t len) +{ + struct rtnl_link *link = rtnl_link_get(cache, ifindex); + + if (link) { + strncpy(dst, link->l_name, len - 1); + rtnl_link_put(link); + return dst; + } + + return NULL; +} + +/** + * Translate a link name to the corresponding interface index + * @arg cache link cache + * @arg name link name + * + * @return interface index or RTNL_LINK_NOT_FOUND if no match was found. + */ +int rtnl_link_name2i(struct nl_cache *cache, const char *name) +{ + int ifindex = RTNL_LINK_NOT_FOUND; + struct rtnl_link *link; + + link = rtnl_link_get_by_name(cache, name); + if (link) { + ifindex = link->l_index; + rtnl_link_put(link); + } + + return ifindex; +} + +/** @} */ + +/** + * @name Link Flags Translations + * @{ + */ + +static struct trans_tbl link_flags[] = { + __ADD(IFF_LOOPBACK, loopback) + __ADD(IFF_BROADCAST, broadcast) + __ADD(IFF_POINTOPOINT, pointopoint) + __ADD(IFF_MULTICAST, multicast) + __ADD(IFF_NOARP, noarp) + __ADD(IFF_ALLMULTI, allmulti) + __ADD(IFF_PROMISC, promisc) + __ADD(IFF_MASTER, master) + __ADD(IFF_SLAVE, slave) + __ADD(IFF_DEBUG, debug) + __ADD(IFF_DYNAMIC, dynamic) + __ADD(IFF_AUTOMEDIA, automedia) + __ADD(IFF_PORTSEL, portsel) + __ADD(IFF_NOTRAILERS, notrailers) + __ADD(IFF_UP, up) + __ADD(IFF_RUNNING, running) + __ADD(IFF_LOWER_UP, lowerup) + __ADD(IFF_DORMANT, dormant) +}; + +/** + * Convert link flags to a character string (Reentrant). + * @arg flags link flags + * @arg buf destination buffer + * @arg len buffer length + * + * Converts link flags to a character string separated by + * commands and stores it in the specified destination buffer. + * + * \return The destination buffer + */ +char * rtnl_link_flags2str(int flags, char *buf, size_t len) +{ + return __flags2str(flags, buf, len, link_flags, + ARRAY_SIZE(link_flags)); +} + +/** + * Convert a character string to a link flag + * @arg name Name of link flag + * + * Converts the provided character string specifying a link + * link the corresponding numeric value. + * + * \return Link flag or a negative value if none was found. + */ +int rtnl_link_str2flags(const char *name) +{ + return __str2flags(name, link_flags, ARRAY_SIZE(link_flags)); +} + +/** @} */ + +/** + * @name Link Statistics Translations + * @{ + */ + +static struct trans_tbl link_stats[] = { + __ADD(RTNL_LINK_RX_PACKETS, rx_packets) + __ADD(RTNL_LINK_TX_PACKETS, tx_packets) + __ADD(RTNL_LINK_RX_BYTES, rx_bytes) + __ADD(RTNL_LINK_TX_BYTES, tx_bytes) + __ADD(RTNL_LINK_RX_ERRORS, rx_errors) + __ADD(RTNL_LINK_TX_ERRORS, tx_errors) + __ADD(RTNL_LINK_RX_DROPPED, rx_dropped) + __ADD(RTNL_LINK_TX_DROPPED, tx_dropped) + __ADD(RTNL_LINK_RX_COMPRESSED, rx_compressed) + __ADD(RTNL_LINK_TX_COMPRESSED, tx_compressed) + __ADD(RTNL_LINK_RX_FIFO_ERR, rx_fifo_err) + __ADD(RTNL_LINK_TX_FIFO_ERR, tx_fifo_err) + __ADD(RTNL_LINK_RX_LEN_ERR, rx_len_err) + __ADD(RTNL_LINK_RX_OVER_ERR, rx_over_err) + __ADD(RTNL_LINK_RX_CRC_ERR, rx_crc_err) + __ADD(RTNL_LINK_RX_FRAME_ERR, rx_frame_err) + __ADD(RTNL_LINK_RX_MISSED_ERR, rx_missed_err) + __ADD(RTNL_LINK_TX_ABORT_ERR, tx_abort_err) + __ADD(RTNL_LINK_TX_CARRIER_ERR, tx_carrier_err) + __ADD(RTNL_LINK_TX_HBEAT_ERR, tx_hbeat_err) + __ADD(RTNL_LINK_TX_WIN_ERR, tx_win_err) + __ADD(RTNL_LINK_TX_COLLISIONS, tx_collision) + __ADD(RTNL_LINK_MULTICAST, multicast) +}; + +/** + * Convert a link statistic to a character string (Reentrant). + * @arg st link statistic + * @arg buf destination buffer + * @arg len buffer length + * + * Converts a link statistic to a character string and stores it in + * the specified destination buffer. + * + * @return The destination buffer or the statistic encoded in + * hexidecimal form if no match was found. + */ +char *rtnl_link_stat2str(int st, char *buf, size_t len) +{ + return __type2str(st, buf, len, link_stats, ARRAY_SIZE(link_stats)); +} + +/** + * Convert a character string to a link statistic + * @arg name name of link statistic + * + * Converts the provided character string specifying a link + * statistic to the corresponding numeric value. + * + * @return Link statistic or a negative value if none was found. + */ +int rtnl_link_str2stat(const char *name) +{ + return __str2type(name, link_stats, ARRAY_SIZE(link_stats)); +} + +/** @} */ + +/** + * @name Attribute Modification + * @{ + */ + +/** + * Set QDisc name + * @arg link link to change + * @arg qdisc qdisc name + */ +void rtnl_link_set_qdisc(struct rtnl_link *link, const char *qdisc) +{ + strncpy(link->l_qdisc, qdisc, sizeof(link->l_qdisc) - 1); + link->l_mask |= LINK_ATTR_QDISC; +} + +/** + * Get QDisc name + * @arg link link handle + * @return Name of the qdisc or NULL if not set. + */ +char *rtnl_link_get_qdisc(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_QDISC) + return link->l_qdisc; + else + return NULL; +} + +/** + * Set new link name + * @arg link link to change + * @arg name new link name + */ +void rtnl_link_set_name(struct rtnl_link *link, const char *name) +{ + strncpy(link->l_name, name, sizeof(link->l_name) - 1); + link->l_mask |= LINK_ATTR_IFNAME; +} + +/** + * Get link name + * @arg link link handle + * @return Name of the link or NULL if not set. + */ +char *rtnl_link_get_name(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_IFNAME) + return link->l_name; + else + return NULL; +} + +static inline void __assign_addr(struct rtnl_link *link, struct nl_addr **pos, + struct nl_addr *new, int flag) +{ + if (*pos) + nl_addr_put(*pos); + + nl_addr_get(new); + *pos = new; + + link->l_mask |= flag; +} + +/** + * Set link layer address + * @arg link link to change + * @arg addr new link layer address + */ +void rtnl_link_set_addr(struct rtnl_link *link, struct nl_addr *addr) +{ + __assign_addr(link, &link->l_addr, addr, LINK_ATTR_ADDR); +} + +/** + * Get link layer address + * @arg link link handle + * @return link layer address or NULL if not set + */ +struct nl_addr *rtnl_link_get_addr(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_ADDR) + return link->l_addr; + else + return NULL; +} + +/** + * Set link layer broadcast address + * @arg link link to change + * @arg brd new link layer broadcast address + * + * Assigns the new broadcast address to the specified link handle. + * + * @note The prefix length of the address will be ignored. + */ +void rtnl_link_set_broadcast(struct rtnl_link *link, struct nl_addr *brd) +{ + __assign_addr(link, &link->l_bcast, brd, LINK_ATTR_BRD); +} + +/** + * Get link layer broadcast address + * @arg link link handle + * @return Link layer broadcast address or NULL if not set + */ +struct nl_addr *rtnl_link_get_broadcast(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_BRD) + return link->l_bcast; + else + return NULL; +} + +/** + * Set flags + * @arg link link to change + * @arg flags flags to set (see \ref link_flags "Link Flags") + */ +void rtnl_link_set_flags(struct rtnl_link *link, unsigned int flags) +{ + link->l_flag_mask |= flags; + link->l_flags |= flags; + link->l_mask |= LINK_ATTR_FLAGS; +} + +/** + * Unset flags + * @arg link link to change + * @arg flags flags to unset (see \ref link_flags "Link Flags") + */ +void rtnl_link_unset_flags(struct rtnl_link *link, unsigned int flags) +{ + link->l_flag_mask |= flags; + link->l_flags &= ~flags; + link->l_mask |= LINK_ATTR_FLAGS; +} + +/** + * Get flags + * @arg link link handle + * @return Link flags + */ +unsigned int rtnl_link_get_flags(struct rtnl_link *link) +{ + return link->l_flags; +} + +/** + * Set link layer address family + * @arg link link to change + * @arg family new address family + */ +void rtnl_link_set_family(struct rtnl_link *link, int family) +{ + link->l_family = family; + link->l_mask |= LINK_ATTR_FAMILY; +} + +/** + * Get link layer address family + * @arg link link handle + * @return Link layer address family or AF_UNSPEC if not set. + */ +int rtnl_link_get_family(struct rtnl_link *link) +{ + if (link->l_family & LINK_ATTR_FAMILY) + return link->l_family; + else + return AF_UNSPEC; +} + +/** + * Set link layer type + * @arg link link handle + * @arg arptype Link layer type. + */ +void rtnl_link_set_type(struct rtnl_link *link, unsigned int arptype) +{ + link->l_arptype = arptype; +} + +/** + * Get link layer type + * @arg link link handle + * @return Link layer type. + */ +unsigned int rtnl_link_get_arptype(struct rtnl_link *link) +{ + return link->l_arptype; +} + +/** + * Set interface index + * @arg link link to change + * @arg ifindex new interface index + */ +void rtnl_link_set_ifindex(struct rtnl_link *link, int ifindex) +{ + link->l_index = ifindex; + link->l_mask |= LINK_ATTR_IFINDEX; +} + +/** + * Get interface index + * @arg link link handle + * @return interface index or RTNL_LINK_NOT_FOUND if not set. + */ +int rtnl_link_get_ifindex(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_IFINDEX) + return link->l_index; + else + return RTNL_LINK_NOT_FOUND; +} + +/** + * Set Maximum Transmission Unit + * @arg link link to change + * @arg mtu new MTU + */ +void rtnl_link_set_mtu(struct rtnl_link *link, unsigned int mtu) +{ + link->l_mtu = mtu; + link->l_mask |= LINK_ATTR_MTU; +} + +/** + * Get Maximum Transmission Unit + * @arg link link handle + * @return Link MTU or 0 if MTU is not set. + */ +unsigned int rtnl_link_get_mtu(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_MTU) + return link->l_mtu; + else + return 0; +} + +/** + * Set Transmission Queue Length + * @arg link link to change + * @arg txqlen new TX queue length + * @note The unit of the transmission queue length depends on the + * link type, a common unit is \a packets. + */ +void rtnl_link_set_txqlen(struct rtnl_link *link, unsigned int txqlen) +{ + link->l_txqlen = txqlen; + link->l_mask |= LINK_ATTR_TXQLEN; +} + +/** + * Get Transmission Queue Length + * @arg link link handle + * @return Transmission Queue Length or UINT_MAX if not set. + */ +unsigned int rtnl_link_get_txqlen(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_TXQLEN) + return link->l_txqlen; + else + return UINT_MAX; +} + +/** + * Set Weight + * @arg link link to change + * @arg weight new weight + */ +void rtnl_link_set_weight(struct rtnl_link *link, unsigned int weight) +{ + link->l_weight = weight; + link->l_mask |= LINK_ATTR_WEIGHT; +} + +/** + * Get Weight + * @arg link link handle + * @return Link weight or UINT_MAX if not set. + */ +unsigned int rtnl_link_get_weight(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_WEIGHT) + return link->l_weight; + else + return UINT_MAX; +} + +/** + * Set parent interface index + * @arg link link to change + * @arg ifindex new parent's interface index + */ +void rtnl_link_set_link(struct rtnl_link *link, int ifindex) +{ + link->l_link = ifindex; + link->l_mask |= LINK_ATTR_LINK; +} + +/** + * Get parent interface index + * @arg link link handle + * @return Parent interface index or RTNL_LINK_NOT_FOUND if not set + */ +int rtnl_link_get_link(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_LINK) + return link->l_link; + else + return RTNL_LINK_NOT_FOUND; +} + +/** + * Set master interface index + * @arg link link to change + * @arg ifindex new master's interface index + */ +void rtnl_link_set_master(struct rtnl_link *link, int ifindex) +{ + link->l_master = ifindex; + link->l_mask |= LINK_ATTR_MASTER; +} + +/** + * Get master interface index + * @arg link link handle + * @return Interface index of master or RTNL_LINK_NOT_FOUND if not set + */ +int rtnl_link_get_master(struct rtnl_link *link) +{ + if (link->l_mask & LINK_ATTR_MASTER) + return link->l_master; + else + return RTNL_LINK_NOT_FOUND; +} + +/** + * Get the statistic specified by the id + * @arg link link handle + * @arg id statistic id + * @return The current counter of the specified statistic + */ +uint64_t rtnl_link_get_stat(struct rtnl_link *link, int id) +{ + if (id < 0 || id > RTNL_LINK_STATS_MAX) + return 0; + + return link->l_stats[id]; +} + +/** @} */ + +static struct nl_cache_ops rtnl_link_ops = { + .co_name = "route/link", + .co_size = sizeof(struct rtnl_link), + .co_hdrsize = sizeof(struct ifinfomsg), + .co_msgtypes = { + { RTM_NEWLINK, "new" }, + { RTM_DELLINK, "delete" }, + { RTM_GETLINK, "get" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_ROUTE, + .co_request_update = link_request_update, + .co_msg_parser = link_msg_parser, + .co_free_data = link_free_data, + .co_dump[NL_DUMP_BRIEF] = link_dump_brief, + .co_dump[NL_DUMP_FULL] = link_dump_full, + .co_dump[NL_DUMP_STATS] = link_dump_stats, + .co_dump[NL_DUMP_XML] = link_dump_xml, + .co_dump[NL_DUMP_ENV] = link_dump_env, + .co_filter = link_filter, +}; + +static void __init link_init(void) +{ + nl_cache_mngt_register(&rtnl_link_ops); +} + +static void __exit link_exit(void) +{ + nl_cache_mngt_unregister(&rtnl_link_ops); +} + +/** @} */ diff --git a/lib/route/neigh.c b/lib/route/neigh.c new file mode 100644 index 0000000..e8e0e40 --- /dev/null +++ b/lib/route/neigh.c @@ -0,0 +1,1115 @@ +/* + * lib/route/neigh.c Neighbours + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup rtnl + * @defgroup neigh Neighbours + * @brief + * + * The neighbour table establishes bindings between protocol addresses and + * link layer addresses for hosts sharing the same physical link. This + * module allows you to access and manipulate the content of these tables. + * + * @par Neighbour States + * @code + * NUD_INCOMPLETE + * NUD_REACHABLE + * NUD_STALE + * NUD_DELAY + * NUD_PROBE + * NUD_FAILED + * NUD_NOARP + * NUD_PERMANENT + * @endcode + * + * @par Neighbour Flags + * @code + * NTF_PROXY + * NTF_ROUTER + * @endcode + * + * @par Neighbour Identification + * A neighbour is uniquely identified by the attributes listed below, whenever + * you refer to an existing neighbour all of the attributes must be set. + * Neighbours from caches automatically have all required attributes set. + * - interface index (rtnl_neigh_set_ifindex()) + * - destination address (rtnl_neigh_set_dst()) + * + * @par Changeable Attributes + * \anchor neigh_changeable + * - state (rtnl_neigh_set_state()) + * - link layer address (rtnl_neigh_set_lladdr()) + * + * @par Required Caches for Dumping + * In order to dump neighbour attributes you must provide the following + * caches via nl_cache_provide() + * - link cache holding all links + * + * @par TODO + * - Document proxy settings + * - Document states and their influence + * + * @par 1) Retrieving information about configured neighbours + * @code + * // The first step is to retrieve a list of all available neighbour within + * // the kernel and put them into a cache. + * struct nl_cache *cache = rtnl_neigh_alloc_cache(handle); + * + * // Neighbours can then be looked up by the interface and destination + * // address: + * struct rtnl_neigh *neigh = rtnl_neigh_get(cache, ifindex, dst_addr); + * + * // After successful usage, the object must be given back to the cache + * rtnl_neigh_put(neigh); + * @endcode + * + * @par 2) Adding new neighbours + * @code + * // Allocate an empty neighbour handle to be filled out with the attributes + * // of the new neighbour. + * struct rtnl_neigh *neigh = rtnl_neigh_alloc(); + * + * // Fill out the attributes of the new neighbour + * rtnl_neigh_set_ifindex(neigh, ifindex); + * rtnl_neigh_set_dst(neigh, dst_addr); + * rtnl_neigh_set_state(neigh, rtnl_neigh_str2state("permanent")); + * + * // Build the netlink message and send it to the kernel, the operation will + * // block until the operation has been completed. Alternatively the required + * // netlink message can be built using rtnl_neigh_build_add_request() + * // to be sent out using nl_send_auto_complete(). + * rtnl_neigh_add(nl_handle, neigh, NLM_F_REPLACE); + * + * // Free the memory + * rtnl_neigh_put(neigh); + * @endcode + * + * @par 3) Deleting an existing neighbour + * @code + * // Allocate an empty neighbour object to be filled out with the attributes + * // matching the neighbour to be deleted. Alternatively a fully equipped + * // neighbour object out of a cache can be used instead. + * struct rtnl_neigh *neigh = rtnl_neigh_alloc(); + * + * // Neighbours are uniquely identified by their interface index and + * // destination address, you may fill out other attributes but they + * // will have no influence. + * rtnl_neigh_set_ifindex(neigh, ifindex); + * rtnl_neigh_set_dst(neigh, dst_addr); + * + * // Build the netlink message and send it to the kernel, the operation will + * // block until the operation has been completed. Alternatively the required + * // netlink message can be built using rtnl_neigh_build_delete_request() + * // to be sent out using nl_send_auto_complete(). + * rtnl_neigh_delete(handle, neigh, 0); + * + * // Free the memory + * rtnl_neigh_put(neigh); + * @endcode + * + * @par 4) Changing neighbour attributes + * @code + * // Allocate an empty neighbour object to be filled out with the attributes + * // matching the neighbour to be changed and the new parameters. Alternatively + * // a fully equipped modified neighbour object out of a cache can be used. + * struct rtnl_neigh *neigh = rtnl_neigh_alloc(); + * + * // Identify the neighbour to be changed by its interface index and + * // destination address + * rtnl_neigh_set_ifindex(neigh, ifindex); + * rtnl_neigh_set_dst(neigh, dst_addr); + * + * // The link layer address may be modified, if so it is wise to change + * // its state to "permanent" in order to avoid having it overwritten. + * rtnl_neigh_set_lladdr(neigh, lladdr); + * + * // Secondly the state can be modified allowing normal neighbours to be + * // converted into permanent entries or to manually confirm a neighbour. + * rtnl_neigh_set_state(neigh, state); + * + * // Build the netlink message and send it to the kernel, the operation will + * // block until the operation has been completed. Alternatively the required + * // netlink message can be built using rtnl_neigh_build_change_request() + * // to be sent out using nl_send_auto_complete(). + * rtnl_neigh_change(handle, neigh, 0); + * + * // Free the memory + * rtnl_neigh_put(neigh); + * @endcode + * @{ + */ + +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define NEIGH_ATTR_FLAGS 0x01 +#define NEIGH_ATTR_STATE 0x02 +#define NEIGH_ATTR_LLADDR 0x04 +#define NEIGH_ATTR_DST 0x08 +#define NEIGH_ATTR_CACHEINFO 0x10 +#define NEIGH_ATTR_IFINDEX 0x20 +#define NEIGH_ATTR_FAMILY 0x40 +#define NEIGH_ATTR_TYPE 0x80 +#define NEIGH_ATTR_PROBES 0x100 + +static struct nl_cache_ops rtnl_neigh_ops; +/** @endcond */ + +static void neigh_free_data(struct nl_object *c) +{ + struct rtnl_neigh *neigh = nl_object_priv(c); + + if (!neigh) + return; + + nl_addr_put(neigh->n_lladdr); + nl_addr_put(neigh->n_dst); +} + +static int neigh_filter(struct nl_object *obj, struct nl_object *filter) +{ + struct rtnl_neigh *o = (struct rtnl_neigh *) obj; + struct rtnl_neigh *f = (struct rtnl_neigh *) filter; + +#define REQ(F) (f->n_mask & NEIGH_ATTR_##F) +#define AVAIL(F) (o->n_mask & NEIGH_ATTR_##F) +#define _O(F, EXPR) (REQ(F) && (!AVAIL(F) || (EXPR))) +#define _C(F, N) (REQ(F) && (!AVAIL(F) || (o->N != f->N))) + if (_C(IFINDEX, n_ifindex) || + _C(FAMILY, n_family) || + _C(TYPE, n_type) || + _O(LLADDR, nl_addr_cmp(o->n_lladdr, f->n_lladdr)) || + _O(DST, nl_addr_cmp(o->n_dst, f->n_dst)) || + _O(STATE, f->n_state ^ (o->n_state & f->n_state_mask)) || + _O(FLAGS, f->n_flags ^ (o->n_flags & f->n_flag_mask))) + return 0; +#undef REQ +#undef AVAIL +#undef _O +#undef _C + + return 1; +} + +static struct nla_policy neigh_policy[NDA_MAX+1] = { + [NDA_CACHEINFO] = { .minlen = sizeof(struct nda_cacheinfo) }, + [NDA_PROBES] = { .type = NLA_U32 }, +}; + +static int neigh_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *n, + void *arg) +{ + struct rtnl_neigh *neigh; + struct nlattr *tb[NDA_MAX + 1]; + struct nl_parser_param *pp = arg; + struct ndmsg *nm; + int err; + + neigh = rtnl_neigh_alloc(); + if (!neigh) { + err = nl_errno(ENOMEM); + goto errout; + } + + neigh->ce_msgtype = n->nlmsg_type; + nm = nlmsg_data(n); + + err = nlmsg_parse(n, sizeof(*nm), tb, NDA_MAX, neigh_policy); + if (err < 0) + goto errout; + + neigh->n_family = nm->ndm_family; + neigh->n_ifindex = nm->ndm_ifindex; + neigh->n_state = nm->ndm_state; + neigh->n_flags = nm->ndm_flags; + neigh->n_type = nm->ndm_type; + + neigh->n_mask |= (NEIGH_ATTR_FAMILY | NEIGH_ATTR_IFINDEX | + NEIGH_ATTR_STATE | NEIGH_ATTR_FLAGS | + NEIGH_ATTR_TYPE); + + if (tb[NDA_LLADDR]) { + neigh->n_lladdr = nla_get_addr(tb[NDA_LLADDR], AF_UNSPEC); + if (!neigh->n_lladdr) + goto errout; + nl_addr_set_family(neigh->n_lladdr, + nl_addr_guess_family(neigh->n_lladdr)); + neigh->n_mask |= NEIGH_ATTR_LLADDR; + } + + if (tb[NDA_DST]) { + neigh->n_dst = nla_get_addr(tb[NDA_DST], neigh->n_family); + if (!neigh->n_dst) + goto errout; + neigh->n_mask |= NEIGH_ATTR_DST; + } + + if (tb[NDA_CACHEINFO]) { + struct nda_cacheinfo *ci = nla_data(tb[NDA_CACHEINFO]); + + neigh->n_cacheinfo.nci_confirmed = ci->ndm_confirmed; + neigh->n_cacheinfo.nci_used = ci->ndm_used; + neigh->n_cacheinfo.nci_updated = ci->ndm_updated; + neigh->n_cacheinfo.nci_refcnt = ci->ndm_refcnt; + + neigh->n_mask |= NEIGH_ATTR_CACHEINFO; + } + + if (tb[NDA_PROBES]) { + neigh->n_probes = nla_get_u32(tb[NDA_PROBES]); + neigh->n_mask |= NEIGH_ATTR_PROBES; + } + + err = pp->pp_cb((struct nl_object *) neigh, pp); + if (err < 0) + goto errout; + + return P_ACCEPT; + +errout: + rtnl_neigh_put(neigh); + return err; +} + +static int neigh_request_update(struct nl_cache *c, struct nl_handle *h) +{ + return nl_rtgen_request(h, RTM_GETNEIGH, AF_UNSPEC, NLM_F_DUMP); +} + + +static int neigh_dump_brief(struct nl_object *a, struct nl_dump_params *p) +{ + char dst[INET6_ADDRSTRLEN+5], lladdr[INET6_ADDRSTRLEN+5]; + struct rtnl_neigh *n = (struct rtnl_neigh *) a; + struct nl_cache *link_cache; + char state[128], flags[64]; + + link_cache = nl_cache_mngt_require("route/link"); + + dp_dump(p, "%s ", nl_addr2str(n->n_dst, dst, sizeof(dst))); + + if (link_cache) + dp_dump(p, "dev %s ", + rtnl_link_i2name(link_cache, n->n_ifindex, + state, sizeof(state))); + else + dp_dump(p, "dev %d ", n->n_ifindex); + + if (n->n_mask & NEIGH_ATTR_LLADDR) + dp_dump(p, "lladdr %s ", + nl_addr2str(n->n_lladdr, lladdr, sizeof(lladdr))); + + rtnl_neigh_state2str(n->n_state, state, sizeof(state)); + rtnl_neigh_flags2str(n->n_flags, flags, sizeof(flags)); + + if (state[0]) + dp_dump(p, "<%s", state); + if (flags[0]) + dp_dump(p, "%s%s", state[0] ? "," : "<", flags); + if (state[0] || flags[0]) + dp_dump(p, ">"); + dp_dump(p, "\n"); + + return 1; +} + +static int neigh_dump_full(struct nl_object *a, struct nl_dump_params *p) +{ + char rtn_type[32]; + struct rtnl_neigh *n = (struct rtnl_neigh *) a; + int hz = nl_get_hz(); + + int line = neigh_dump_brief(a, p); + + dp_dump_line(p, line++, " refcnt %u type %s confirmed %u used " + "%u updated %u\n", + n->n_cacheinfo.nci_refcnt, + nl_rtntype2str(n->n_type, rtn_type, sizeof(rtn_type)), + n->n_cacheinfo.nci_confirmed/hz, + n->n_cacheinfo.nci_used/hz, n->n_cacheinfo.nci_updated/hz); + + return line; +} + +static int neigh_dump_stats(struct nl_object *a, struct nl_dump_params *p) +{ + return neigh_dump_full(a, p); +} + +static int neigh_dump_xml(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_neigh *neigh = (struct rtnl_neigh *) obj; + char buf[128]; + int line = 0; + + dp_dump_line(p, line++, "\n"); + dp_dump_line(p, line++, " %s\n", + nl_af2str(neigh->n_family, buf, sizeof(buf))); + + if (neigh->n_mask & NEIGH_ATTR_LLADDR) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(neigh->n_lladdr, buf, sizeof(buf))); + + if (neigh->n_mask & NEIGH_ATTR_DST) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(neigh->n_dst, buf, sizeof(buf))); + + if (neigh->n_mask & NEIGH_ATTR_IFINDEX) { + struct nl_cache *link_cache; + + link_cache = nl_cache_mngt_require("route/link"); + + if (link_cache) + dp_dump_line(p, line++, " %s\n", + rtnl_link_i2name(link_cache, + neigh->n_ifindex, + buf, sizeof(buf))); + else + dp_dump_line(p, line++, " %u\n", + neigh->n_ifindex); + } + + if (neigh->n_mask & NEIGH_ATTR_PROBES) + dp_dump_line(p, line++, " %u\n", + neigh->n_probes); + + if (neigh->n_mask & NEIGH_ATTR_TYPE) + dp_dump_line(p, line++, " %s\n", + nl_rtntype2str(neigh->n_type, buf, sizeof(buf))); + + rtnl_neigh_flags2str(neigh->n_flags, buf, sizeof(buf)); + if (buf[0]) + dp_dump_line(p, line++, " %s\n", buf); + + rtnl_neigh_state2str(neigh->n_state, buf, sizeof(buf)); + if (buf[0]) + dp_dump_line(p, line++, " %s\n", buf); + + dp_dump_line(p, line++, "\n"); + +#if 0 + struct rtnl_ncacheinfo n_cacheinfo; +#endif + + return line; +} + +static int neigh_dump_env(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_neigh *neigh = (struct rtnl_neigh *) obj; + char buf[128]; + int line = 0; + + dp_dump_line(p, line++, "NEIGH_FAMILY=%s\n", + nl_af2str(neigh->n_family, buf, sizeof(buf))); + + if (neigh->n_mask & NEIGH_ATTR_LLADDR) + dp_dump_line(p, line++, "NEIGHT_LLADDR=%s\n", + nl_addr2str(neigh->n_lladdr, buf, sizeof(buf))); + + if (neigh->n_mask & NEIGH_ATTR_DST) + dp_dump_line(p, line++, "NEIGH_DST=%s\n", + nl_addr2str(neigh->n_dst, buf, sizeof(buf))); + + if (neigh->n_mask & NEIGH_ATTR_IFINDEX) { + struct nl_cache *link_cache; + + dp_dump_line(p, line++, "NEIGH_IFINDEX=%u\n", + neigh->n_ifindex); + + link_cache = nl_cache_mngt_require("route/link"); + if (link_cache) + dp_dump_line(p, line++, "NEIGH_IFNAME=%s\n", + rtnl_link_i2name(link_cache, + neigh->n_ifindex, + buf, sizeof(buf))); + } + + if (neigh->n_mask & NEIGH_ATTR_PROBES) + dp_dump_line(p, line++, "NEIGH_PROBES=%u\n", + neigh->n_probes); + + if (neigh->n_mask & NEIGH_ATTR_TYPE) + dp_dump_line(p, line++, "NEIGH_TYPE=%s\n", + nl_rtntype2str(neigh->n_type, buf, sizeof(buf))); + + rtnl_neigh_flags2str(neigh->n_flags, buf, sizeof(buf)); + if (buf[0]) + dp_dump_line(p, line++, "NEIGH_FLAGS=%s\n", buf); + + rtnl_neigh_state2str(neigh->n_state, buf, sizeof(buf)); + if (buf[0]) + dp_dump_line(p, line++, "NEIGH_STATE=%s\n", buf); + + return line; +} + +/** + * @name Neighbour Object Allocation/Freeage + * @{ + */ + +/** + * Allocate a new neighbour object + * @return New neighbour object + */ +struct rtnl_neigh *rtnl_neigh_alloc(void) +{ + return (struct rtnl_neigh *) nl_object_alloc_from_ops(&rtnl_neigh_ops); +} + +/** + * Give back reference on neighbour object. + * @arg neigh Neighbour object to be given back. + * + * Decrements the reference counter and frees the object if the + * last reference has been released. + */ +void rtnl_neigh_put(struct rtnl_neigh *neigh) +{ + nl_object_put((struct nl_object *) neigh); +} +/** + * Free neighbour object. + * @arg neigh Neighbour object to be freed. + * + * @note Always use rtnl_neigh_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void rtnl_neigh_free(struct rtnl_neigh *neigh) +{ + nl_object_free((struct nl_object *) neigh); +} + +/** @} */ + +/** + * @name Neighbour Cache Managament + * @{ + */ + +/** + * Build a neighbour cache including all neighbours currently configured in the kernel. + * @arg handle netlink handle + * + * Allocates a new neighbour cache, initializes it properly and updates it + * to include all neighbours currently configured in the kernel. + * + * @note The caller is responsible for destroying and freeing the + * cache after using it. + * @return The new cache or NULL if an error occured. + */ +struct nl_cache *rtnl_neigh_alloc_cache(struct nl_handle *handle) +{ + struct nl_cache *cache = nl_cache_alloc_from_ops(&rtnl_neigh_ops); + + if (cache == NULL) + return NULL; + + if (nl_cache_update(handle, cache) < 0) { + nl_cache_free(cache); + return NULL; + } + + NL_DBG(2, "Returning new cache %p\n", cache); + + return cache; +} + +/** + * Look up a neighbour by interface index and destination address + * @arg cache neighbour cache + * @arg ifindex interface index the neighbour is on + * @arg dst destination address of the neighbour + * @return neighbour handle or NULL if no match was found. + */ +struct rtnl_neigh * rtnl_neigh_get(struct nl_cache *cache, int ifindex, + struct nl_addr *dst) +{ + struct rtnl_neigh *neigh; + + nl_list_for_each_entry(neigh, &cache->c_items, ce_list) { + if (neigh->n_ifindex == ifindex && + !nl_addr_cmp(neigh->n_dst, dst)) { + nl_object_get((struct nl_object *) neigh); + return neigh; + } + } + + return NULL; +} + +/** @} */ + +/** + * @name Neighbour Addition + * @{ + */ + +static struct nl_msg * build_neigh_msg(struct rtnl_neigh *tmpl, int cmd, + int flags) +{ + struct nl_msg *msg; + struct ndmsg nhdr = { + .ndm_ifindex = tmpl->n_ifindex, + .ndm_family = nl_addr_get_family(tmpl->n_dst), + .ndm_state = NUD_PERMANENT, + }; + + if (tmpl->n_mask & NEIGH_ATTR_STATE) + nhdr.ndm_state = tmpl->n_state; + + msg = nlmsg_build_simple(cmd, flags); + if (!msg) + return NULL; + + if (nlmsg_append(msg, &nhdr, sizeof(nhdr), 1) < 0) + goto nla_put_failure; + + NLA_PUT_ADDR(msg, NDA_DST, tmpl->n_dst); + + if (tmpl->n_mask & NEIGH_ATTR_LLADDR) + NLA_PUT_ADDR(msg, NDA_LLADDR, tmpl->n_lladdr); + + return msg; + +nla_put_failure: + nlmsg_free(msg); + return NULL; +} + +/** + * Build netlink request message to add a new neighbour + * @arg tmpl template with data of new neighbour + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a addition of a new + * neighbour. The netlink message header isn't fully equipped with + * all relevant fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. \a tmpl must contain the attributes of the new + * neighbour set via \c rtnl_neigh_set_* functions. + * + * The following attributes must be set in the template: + * - Interface index (rtnl_neigh_set_ifindex()) + * - State (rtnl_neigh_set_state()) + * - Destination address (rtnl_neigh_set_dst()) + * - Link layer address (rtnl_neigh_set_lladdr()) + * + * @return The netlink message + */ +struct nl_msg * rtnl_neigh_build_add_request(struct rtnl_neigh *tmpl, int flags) +{ + return build_neigh_msg(tmpl, RTM_NEWNEIGH, NLM_F_CREATE | flags); +} + +/** + * Add a new neighbour + * @arg handle netlink handle + * @arg tmpl template with requested changes + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_neigh_build_add_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been fullfilled. + * + * The following attributes must be set in the template: + * - Interface index (rtnl_neigh_set_ifindex()) + * - State (rtnl_neigh_set_state()) + * - Destination address (rtnl_neigh_set_dst()) + * - Link layer address (rtnl_neigh_set_lladdr()) + * + * @return 0 on sucess or a negative error if an error occured. + */ +int rtnl_neigh_add(struct nl_handle *handle, struct rtnl_neigh *tmpl, int flags) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_neigh_build_add_request(tmpl, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name Neighbour Deletion + * @{ + */ + +/** + * Build a netlink request message to delete a neighbour + * @arg neigh neighbour to delete + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a deletion of a neighbour. + * The netlink message header isn't fully equipped with all relevant + * fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. \a neigh must point to an existing + * neighbour. + * + * @return The netlink message + */ +struct nl_msg *rtnl_neigh_build_delete_request(struct rtnl_neigh *neigh, + int flags) +{ + return build_neigh_msg(neigh, RTM_DELNEIGH, flags); +} + +/** + * Delete a neighbour + * @arg handle netlink handle + * @arg neigh neighbour to delete + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_neigh_build_delete_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been fullfilled. + * + * @return 0 on sucess or a negative error if an error occured. + */ +int rtnl_neigh_delete(struct nl_handle *handle, struct rtnl_neigh *neigh, + int flags) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_neigh_build_delete_request(neigh, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name Neighbour Modification + * @{ + */ + +/** + * Build a netlink request message to change neighbour attributes + * @arg neigh the neighbour to change + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a change of a neigh + * attributes. The netlink message header isn't fully equipped with + * all relevant fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. + * + * @return The netlink message + * @note Not all attributes can be changed, see + * \ref neigh_changeable "Changeable Attributes" for a list. + */ +struct nl_msg *rtnl_neigh_build_change_request(struct rtnl_neigh *neigh, + int flags) +{ + return build_neigh_msg(neigh, RTM_NEWNEIGH, NLM_F_REPLACE | flags); +} + +/** + * Change neighbour attributes + * @arg handle netlink handle + * @arg neigh neighbour to be changed + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_neigh_build_change_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been fullfilled. + * + * @return 0 on sucess or a negative error if an error occured. + * @note Not all attributes can be changed, see + * \ref neigh_changeable "Changeable Attributes" for a list. + */ +int rtnl_neigh_change(struct nl_handle *handle, struct rtnl_neigh *neigh, + int flags) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_neigh_build_change_request(neigh, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name Neighbour States Translations + * @{ + */ + +static struct trans_tbl neigh_states[] = { + __ADD(NUD_INCOMPLETE, incomplete) + __ADD(NUD_REACHABLE, reachable) + __ADD(NUD_STALE, stale) + __ADD(NUD_DELAY, delay) + __ADD(NUD_PROBE, probe) + __ADD(NUD_FAILED, failed) + __ADD(NUD_NOARP, norarp) + __ADD(NUD_PERMANENT, permanent) +}; + +/** + * Convert neighbour states to a character string (Reentrant). + * @arg state neighbour state + * @arg buf destination buffer + * @arg len buffer length + * + * Converts a neighbour state to a character string separated by + * commands and stores it in the specified destination buffer. + * + * @return The destination buffer + */ +char * rtnl_neigh_state2str(int state, char *buf, size_t len) +{ + return __flags2str(state, buf, len, neigh_states, + ARRAY_SIZE(neigh_states)); +} + +/** + * Convert a character string to a neighbour state + * @arg name Name of cscope + * + * Converts the provided character string specifying a neighbour + * state the corresponding numeric value. + * + * @return Neighbour state or a negative value if none was found. + */ +int rtnl_neigh_str2state(const char *name) +{ + return __str2type(name, neigh_states, ARRAY_SIZE(neigh_states)); +} + +/** @} */ + +/** + * @name Neighbour Flags Translations + * @{ + */ + +static struct trans_tbl neigh_flags[] = { + __ADD(NTF_PROXY, proxy) + __ADD(NTF_ROUTER, router) +}; + +/** + * Convert neighbour flags to a character string (Reentrant). + * @arg flags neighbour flags + * @arg buf destination buffer + * @arg len buffer length + * + * Converts neighbour flags to a character string separated by + * commands and stores it in the specified destination buffer. + * + * @return The destination buffer or a empty string if no flags are set. + */ +char * rtnl_neigh_flags2str(int flags, char *buf, size_t len) +{ + return __flags2str(flags, buf, len, neigh_flags, + ARRAY_SIZE(neigh_flags)); +} + +/** + * Convert a character string to a neighbour flag + * @arg name name of the flag + * + * Converts the provided character string specifying a neighbour + * flag the corresponding numeric value. + * + * @return Neighbour flag or a negative value if none was found. + */ +int rtnl_neigh_str2flag(const char *name) +{ + return __str2type(name, neigh_flags, ARRAY_SIZE(neigh_flags)); +} + +/** @} */ + +/** + * @name Attribute Modification + * @{ + */ + +/** + * Set a neighbour state + * @arg neigh neighbour to change + * @arg state state to set + */ +void rtnl_neigh_set_state(struct rtnl_neigh *neigh, int state) +{ + neigh->n_state_mask |= state; + neigh->n_state |= state; + neigh->n_mask |= NEIGH_ATTR_STATE; +} + +/** + * Get neighbour states + * @arg neigh neighbour handle + * @return Neighbour state or -1 if not set + */ +int rtnl_neigh_get_state(struct rtnl_neigh *neigh) +{ + if (neigh->n_mask & NEIGH_ATTR_STATE) + return neigh->n_state; + else + return -1; +} + +/** + * Unset a neigbour state + * @arg neigh neighbour to change + * @arg state state to unset + */ +void rtnl_neigh_unset_state(struct rtnl_neigh *neigh, int state) +{ + neigh->n_state_mask |= state; + neigh->n_state &= ~state; + neigh->n_mask |= NEIGH_ATTR_STATE; +} + +/** + * Set neighbour flags + * @arg neigh neighbour to change + * @arg flags flag to set + */ +void rtnl_neigh_set_flags(struct rtnl_neigh *neigh, unsigned int flags) +{ + neigh->n_flag_mask |= flags; + neigh->n_flags |= flags; + neigh->n_mask |= NEIGH_ATTR_FLAGS; +} + +/** + * Get neighbour flags + * @arg neigh neighbour handle + * @return Neighbour flags + */ +unsigned int rtnl_neigh_get_flags(struct rtnl_neigh *neigh) +{ + return neigh->n_flags; +} + +/** + * Unset neighbour flags + * @arg neigh neighbour to change + * @arg flags flag to unset + */ +void rtnl_neigh_unset_flags(struct rtnl_neigh *neigh, unsigned int flags) +{ + neigh->n_flag_mask |= flags; + neigh->n_flags &= ~flags; + neigh->n_mask |= NEIGH_ATTR_FLAGS; +} + +/** + * Set the interface index of device this neighbour is on + * @arg neigh neighbour to change + * @arg ifindex new interface index + */ +void rtnl_neigh_set_ifindex(struct rtnl_neigh *neigh, int ifindex) +{ + neigh->n_ifindex = ifindex; + neigh->n_mask |= NEIGH_ATTR_IFINDEX; +} + +/** + * Get the interface index of the device this neighbour is on + * @arg neigh neighbour handle + * @return Interface index or RTNL_LINK_NOT_FOUND if not set + */ +int rtnl_neigh_get_ifindex(struct rtnl_neigh *neigh) +{ + if (neigh->n_mask & NEIGH_ATTR_IFINDEX) + return neigh->n_ifindex; + else + return RTNL_LINK_NOT_FOUND; +} + +static inline int __assign_addr(struct rtnl_neigh *neigh, struct nl_addr **pos, + struct nl_addr *new, int flag, int nocheck) +{ + if (!nocheck) { + if (neigh->n_mask & NEIGH_ATTR_FAMILY) { + if (new->a_family != neigh->n_family) + return nl_error(EINVAL, + "Address family mismatch"); + } else { + neigh->n_family = new->a_family; + neigh->n_mask |= NEIGH_ATTR_FAMILY; + } + } + + if (*pos) + nl_addr_put(*pos); + + nl_addr_get(new); + *pos = new; + + neigh->n_mask |= flag; + + return 0; +} + +/** + * Set link layer address of a neighbour + * @arg neigh neighbour to change + * @arg addr new link layer address + * + * Assigns the new link layer address to the specified neighbour handle. + * + * @note The prefix length of the address will be ignored. + */ +void rtnl_neigh_set_lladdr(struct rtnl_neigh *neigh, struct nl_addr *addr) +{ + __assign_addr(neigh, &neigh->n_lladdr, addr, NEIGH_ATTR_LLADDR, 1); +} + +/** + * Get link layer address of a neighbour + * @arg neigh neighbour handle + * @return Link layer address or NULL if not set + */ +struct nl_addr *rtnl_neigh_get_lladdr(struct rtnl_neigh *neigh) +{ + if (neigh->n_mask & NEIGH_ATTR_LLADDR) + return neigh->n_lladdr; + else + return NULL; +} + +/** + * Set destination address of a neighbour + * @arg neigh neighbour to change + * @arg addr new destination address + * + * Assigns the new destination address to the specified neighbour handle. + * The address is validated against the address family if set already via + * rtnl_neigh_set_family(). The assignment fails if the address families + * mismatch. In case the address family has not been specified yet, the + * address family of this new address is elected to be the requirement. + * + * @return 0 on success or a negative error code. + */ +int rtnl_neigh_set_dst(struct rtnl_neigh *neigh, struct nl_addr *addr) +{ + return __assign_addr(neigh, &neigh->n_dst, addr, + NEIGH_ATTR_DST, 0); +} + +/** + * Get the destination address of a neighbour + * @arg neigh neighbour handle + * @return Destination address or NULL if not set + */ +struct nl_addr *rtnl_neigh_get_dst(struct rtnl_neigh *neigh) +{ + if (neigh->n_mask & NEIGH_ATTR_DST) + return neigh->n_dst; + else + return NULL; +} + +/** + * Set destination address family + * @arg neigh neighbour to change + * @arg family new destination address family + */ +void rtnl_neigh_set_family(struct rtnl_neigh *neigh, int family) +{ + neigh->n_family = family; + neigh->n_mask |= NEIGH_ATTR_FAMILY; +} + +/** + * Set RTN type of a neighbour + * @arg neigh neighbour to change + * @arg type new rtn type + */ +void rtnl_neigh_set_type(struct rtnl_neigh *neigh, int type) +{ + neigh->n_type = type; + neigh->n_mask = NEIGH_ATTR_TYPE; +} + +/** + * Get RTN type of a neighbour + * @arg neigh neighbour handle + * @return Type or -1 if not set + */ +int rtnl_neigh_get_type(struct rtnl_neigh *neigh) +{ + if (neigh->n_mask & NEIGH_ATTR_TYPE) + return neigh->n_type; + else + return -1; +} + +/** @} */ + +static struct nl_cache_ops rtnl_neigh_ops = { + .co_name = "route/neigh", + .co_size = sizeof(struct rtnl_neigh), + .co_hdrsize = sizeof(struct ndmsg), + .co_msgtypes = { + { RTM_NEWNEIGH, "new" }, + { RTM_DELNEIGH, "delete" }, + { RTM_GETNEIGH, "get" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_ROUTE, + .co_request_update = neigh_request_update, + .co_msg_parser = neigh_msg_parser, + .co_free_data = neigh_free_data, + .co_dump[NL_DUMP_BRIEF] = neigh_dump_brief, + .co_dump[NL_DUMP_FULL] = neigh_dump_full, + .co_dump[NL_DUMP_STATS] = neigh_dump_stats, + .co_dump[NL_DUMP_XML] = neigh_dump_xml, + .co_dump[NL_DUMP_ENV] = neigh_dump_env, + .co_filter = neigh_filter, +}; + +static void __init neigh_init(void) +{ + nl_cache_mngt_register(&rtnl_neigh_ops); +} + +static void __exit neigh_exit(void) +{ + nl_cache_mngt_unregister(&rtnl_neigh_ops); +} + +/** @} */ diff --git a/lib/route/neightbl.c b/lib/route/neightbl.c new file mode 100644 index 0000000..4d7b914 --- /dev/null +++ b/lib/route/neightbl.c @@ -0,0 +1,876 @@ +/* + * lib/route/neightbl.c neighbour tables + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup rtnl + * @defgroup neightbl Neighbour Tables + * @brief + * @{ + */ + +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define NEIGHTBL_ATTR_FAMILY 0x001 +#define NEIGHTBL_ATTR_STATS 0x002 +#define NEIGHTBL_ATTR_NAME 0x004 +#define NEIGHTBL_ATTR_THRESH1 0x008 +#define NEIGHTBL_ATTR_THRESH2 0x010 +#define NEIGHTBL_ATTR_THRESH3 0x020 +#define NEIGHTBL_ATTR_CONFIG 0x040 +#define NEIGHTBL_ATTR_PARMS 0x080 +#define NEIGHTBL_ATTR_GC_INTERVAL 0x100 + +#define NEIGHTBLPARM_ATTR_IFINDEX 0x0001 +#define NEIGHTBLPARM_ATTR_REFCNT 0x0002 +#define NEIGHTBLPARM_ATTR_QUEUE_LEN 0x0004 +#define NEIGHTBLPARM_ATTR_APP_PROBES 0x0008 +#define NEIGHTBLPARM_ATTR_UCAST_PROBES 0x0010 +#define NEIGHTBLPARM_ATTR_MCAST_PROBES 0x0020 +#define NEIGHTBLPARM_ATTR_PROXY_QLEN 0x0040 +#define NEIGHTBLPARM_ATTR_REACHABLE_TIME 0x0080 +#define NEIGHTBLPARM_ATTR_BASE_REACHABLE_TIME 0x0100 +#define NEIGHTBLPARM_ATTR_RETRANS_TIME 0x0200 +#define NEIGHTBLPARM_ATTR_GC_STALETIME 0x0400 +#define NEIGHTBLPARM_ATTR_DELAY_PROBE_TIME 0x0800 +#define NEIGHTBLPARM_ATTR_ANYCAST_DELAY 0x1000 +#define NEIGHTBLPARM_ATTR_PROXY_DELAY 0x2000 +#define NEIGHTBLPARM_ATTR_LOCKTIME 0x4000 + +static struct nl_cache_ops rtnl_neightbl_ops; +/** @endcond */ + +static int neightbl_filter(struct nl_object *obj, struct nl_object *filter) +{ + struct rtnl_neightbl *o = (struct rtnl_neightbl *) obj; + struct rtnl_neightbl *f = (struct rtnl_neightbl *) filter; + struct rtnl_neightbl_parms *op = &o->nt_parms; + struct rtnl_neightbl_parms *fp = &f->nt_parms; + +#define REQ(F) (f->nt_mask & NEIGHTBL_ATTR_##F) +#define AVAIL(F) (o->nt_mask & NEIGHTBL_ATTR_##F) +#define _O(F, EXPR) (REQ(F) && (!AVAIL(F) || (EXPR))) +#define _C(F, N) (REQ(F) && (!AVAIL(F) || (o->N != f->N))) + + if (_C(FAMILY, nt_family) || + _O(NAME, strcmp(o->nt_name, f->nt_name)) || + _C(THRESH1, nt_gc_thresh1) || + _C(THRESH2, nt_gc_thresh2) || + _C(THRESH3, nt_gc_thresh3) || + _C(GC_INTERVAL, nt_gc_interval)) + return 0; +#undef REQ +#undef AVAIL +#undef _O +#undef _C + + if (!(f->nt_mask & NEIGHTBL_ATTR_PARMS) && + !(o->nt_mask & NEIGHTBL_ATTR_PARMS)) + return 1; + +#define REQ(F) (fp->ntp_mask & NEIGHTBLPARM_ATTR_##F) +#define AVAIL(F) (op->ntp_mask & NEIGHTBLPARM_ATTR_##F) +#define _C(F, N) (REQ(F) && (!AVAIL(F) || (op->N != fp->N))) + if (_C(IFINDEX, ntp_ifindex) || + _C(QUEUE_LEN, ntp_queue_len) || + _C(APP_PROBES, ntp_app_probes) || + _C(UCAST_PROBES, ntp_ucast_probes) || + _C(MCAST_PROBES, ntp_mcast_probes) || + _C(PROXY_QLEN, ntp_proxy_qlen) || + _C(LOCKTIME, ntp_locktime) || + _C(RETRANS_TIME, ntp_retrans_time) || + _C(BASE_REACHABLE_TIME, ntp_base_reachable_time) || + _C(GC_STALETIME, ntp_gc_stale_time) || + _C(DELAY_PROBE_TIME, ntp_probe_delay) || + _C(ANYCAST_DELAY, ntp_anycast_delay) || + _C(PROXY_DELAY, ntp_proxy_delay)) + return 0; +#undef REQ +#undef AVAIL +#undef _C + + return 1; +} + +static struct nla_policy neightbl_policy[NDTA_MAX+1] = { + [NDTA_NAME] = { .type = NLA_STRING, + .maxlen = NTBLNAMSIZ }, + [NDTA_THRESH1] = { .type = NLA_U32 }, + [NDTA_THRESH2] = { .type = NLA_U32 }, + [NDTA_THRESH3] = { .type = NLA_U32 }, + [NDTA_GC_INTERVAL] = { .type = NLA_U32 }, + [NDTA_CONFIG] = { .minlen = sizeof(struct ndt_config) }, + [NDTA_STATS] = { .minlen = sizeof(struct ndt_stats) }, + [NDTA_PARMS] = { .type = NLA_NESTED }, +}; + +static int neightbl_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *n, + void *arg) +{ + struct rtnl_neightbl *ntbl; + struct nlattr *tb[NDTA_MAX + 1]; + struct nl_parser_param *pp = arg; + struct rtgenmsg *rtmsg; + int err; + + ntbl = rtnl_neightbl_alloc(); + if (!ntbl) { + err = nl_errno(ENOMEM); + goto errout; + } + + ntbl->ce_msgtype = n->nlmsg_type; + rtmsg = nlmsg_data(n); + + err = nlmsg_parse(n, sizeof(*rtmsg), tb, NDTA_MAX, neightbl_policy); + if (err < 0) + goto errout; + + ntbl->nt_family = rtmsg->rtgen_family; + + if (tb[NDTA_NAME] == NULL) { + err = nl_error(EINVAL, "NDTA_NAME is missing"); + goto errout; + } + + nla_strlcpy(ntbl->nt_name, tb[NDTA_NAME], NTBLNAMSIZ); + ntbl->nt_mask |= NEIGHTBL_ATTR_NAME; + + if (tb[NDTA_THRESH1]) { + ntbl->nt_gc_thresh1 = nla_get_u32(tb[NDTA_THRESH1]); + ntbl->nt_mask |= NEIGHTBL_ATTR_THRESH1; + } + + if (tb[NDTA_THRESH2]) { + ntbl->nt_gc_thresh2 = nla_get_u32(tb[NDTA_THRESH2]); + ntbl->nt_mask |= NEIGHTBL_ATTR_THRESH2; + } + + if (tb[NDTA_THRESH3]) { + ntbl->nt_gc_thresh3 = nla_get_u32(tb[NDTA_THRESH3]); + ntbl->nt_mask |= NEIGHTBL_ATTR_THRESH3; + } + + if (tb[NDTA_GC_INTERVAL]) { + ntbl->nt_gc_interval = nla_get_u32(tb[NDTA_GC_INTERVAL]); + ntbl->nt_mask |= NEIGHTBL_ATTR_GC_INTERVAL; + } + + if (tb[NDTA_CONFIG]) { + nla_memcpy(&ntbl->nt_config, tb[NDTA_CONFIG], + sizeof(ntbl->nt_config)); + ntbl->nt_mask |= NEIGHTBL_ATTR_CONFIG; + } + + if (tb[NDTA_STATS]) { + nla_memcpy(&ntbl->nt_stats, tb[NDTA_STATS], + sizeof(ntbl->nt_stats)); + ntbl->nt_mask |= NEIGHTBL_ATTR_STATS; + } + + if (tb[NDTA_PARMS]) { + struct nlattr *tbp[NDTPA_MAX + 1]; + struct rtnl_neightbl_parms *p = &ntbl->nt_parms; + + err = nla_parse_nested(tbp, NDTPA_MAX, tb[NDTA_PARMS], NULL); + if (err < 0) + goto errout; + +#define COPY_ENTRY(name, var) \ + if (tbp[NDTPA_ ##name]) { \ + p->ntp_ ##var = nla_get_u32(tbp[NDTPA_ ##name]); \ + p->ntp_mask |= NEIGHTBLPARM_ATTR_ ##name; \ + } + + COPY_ENTRY(IFINDEX, ifindex); + COPY_ENTRY(REFCNT, refcnt); + COPY_ENTRY(QUEUE_LEN, queue_len); + COPY_ENTRY(APP_PROBES, app_probes); + COPY_ENTRY(UCAST_PROBES, ucast_probes); + COPY_ENTRY(MCAST_PROBES, mcast_probes); + COPY_ENTRY(PROXY_QLEN, proxy_qlen); + COPY_ENTRY(PROXY_DELAY, proxy_delay); + COPY_ENTRY(ANYCAST_DELAY, anycast_delay); + COPY_ENTRY(LOCKTIME, locktime); + COPY_ENTRY(REACHABLE_TIME, reachable_time); + COPY_ENTRY(BASE_REACHABLE_TIME, base_reachable_time); + COPY_ENTRY(RETRANS_TIME, retrans_time); + COPY_ENTRY(GC_STALETIME, gc_stale_time); + COPY_ENTRY(DELAY_PROBE_TIME, probe_delay); +#undef COPY_ENTRY + + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; + } + + err = pp->pp_cb((struct nl_object *) ntbl, pp); + if (err < 0) + goto errout; + + return P_ACCEPT; +errout: + rtnl_neightbl_put(ntbl); + return err; +} + +static int neightbl_request_update(struct nl_cache *c, struct nl_handle *h) +{ + return nl_rtgen_request(h, RTM_GETNEIGHTBL, AF_UNSPEC, NLM_F_DUMP); +} + + +static int neightbl_dump_brief(struct nl_object *arg, struct nl_dump_params *p) +{ + int line = 1; + struct rtnl_neightbl *ntbl = (struct rtnl_neightbl *) arg; + + dp_dump(p, "%s", ntbl->nt_name); + + if (ntbl->nt_parms.ntp_mask & NEIGHTBLPARM_ATTR_IFINDEX) { + struct nl_cache *link_cache; + + link_cache = nl_cache_mngt_require("route/link"); + + if (link_cache) { + char buf[32]; + dp_dump(p, "<%s> ", + rtnl_link_i2name(link_cache, + ntbl->nt_parms.ntp_ifindex, + buf, sizeof(buf))); + } else + dp_dump(p, "<%u> ", ntbl->nt_parms.ntp_ifindex); + } else + dp_dump(p, " "); + + if (ntbl->nt_mask & NEIGHTBL_ATTR_CONFIG) + dp_dump(p, "entries %u ", ntbl->nt_config.ndtc_entries); + + if (ntbl->nt_mask & NEIGHTBL_ATTR_PARMS) { + char rt[32], rt2[32]; + struct rtnl_neightbl_parms *pa = &ntbl->nt_parms; + + dp_dump(p, "reachable-time %s retransmit-time %s", + nl_msec2str(pa->ntp_reachable_time, rt, sizeof(rt)), + nl_msec2str(pa->ntp_retrans_time, rt2, sizeof(rt2))); + } + + dp_dump(p, "\n"); + + return line; +} + +static int neightbl_dump_full(struct nl_object *arg, struct nl_dump_params *p) +{ + char x[32], y[32], z[32]; + struct rtnl_neightbl *ntbl = (struct rtnl_neightbl *) arg; + + int line = neightbl_dump_brief(arg, p); + + if (ntbl->nt_mask & NEIGHTBL_ATTR_CONFIG) { + dp_new_line(p, line++); + dp_dump(p, " key-len %u entry-size %u last-flush %s\n", + ntbl->nt_config.ndtc_key_len, + ntbl->nt_config.ndtc_entry_size, + nl_msec2str(ntbl->nt_config.ndtc_last_flush, + x, sizeof(x))); + + dp_new_line(p, line++); + dp_dump(p, " gc threshold %u/%u/%u interval %s " \ + "chain-position %u\n", + ntbl->nt_gc_thresh1, ntbl->nt_gc_thresh2, + ntbl->nt_gc_thresh3, + nl_msec2str(ntbl->nt_gc_interval, x, sizeof(x)), + ntbl->nt_config.ndtc_hash_chain_gc); + + dp_new_line(p, line++); + dp_dump(p, " hash-rand 0x%08X/0x%08X last-rand %s\n", + ntbl->nt_config.ndtc_hash_rnd, + ntbl->nt_config.ndtc_hash_mask, + nl_msec2str(ntbl->nt_config.ndtc_last_rand, + x, sizeof(x))); + } + + if (ntbl->nt_mask & NEIGHTBL_ATTR_PARMS) { + struct rtnl_neightbl_parms *pa = &ntbl->nt_parms; + + dp_new_line(p, line++); + dp_dump(p, " refcnt %u pending-queue-limit %u " \ + "proxy-delayed-queue-limit %u\n", + pa->ntp_refcnt, + pa->ntp_queue_len, + pa->ntp_proxy_qlen); + + dp_new_line(p, line++); + dp_dump(p, " num-userspace-probes %u num-unicast-probes " \ + "%u num-multicast-probes %u\n", + pa->ntp_app_probes, + pa->ntp_ucast_probes, + pa->ntp_mcast_probes); + + dp_new_line(p, line++); + dp_dump(p, " min-age %s base-reachable-time %s " \ + "stale-check-interval %s\n", + nl_msec2str(pa->ntp_locktime, x, sizeof(x)), + nl_msec2str(pa->ntp_base_reachable_time, + y, sizeof(y)), + nl_msec2str(pa->ntp_gc_stale_time, z, sizeof(z))); + + dp_new_line(p, line++); + dp_dump(p, " initial-probe-delay %s answer-delay %s " \ + "proxy-answer-delay %s\n", + nl_msec2str(pa->ntp_probe_delay, x, sizeof(x)), + nl_msec2str(pa->ntp_anycast_delay, y, sizeof(y)), + nl_msec2str(pa->ntp_proxy_delay, z, sizeof(z))); + } + + return line; +} + +static int neightbl_dump_stats(struct nl_object *arg, struct nl_dump_params *p) +{ + struct rtnl_neightbl *ntbl = (struct rtnl_neightbl *) arg; + int line = neightbl_dump_full(arg, p); + + if (!(ntbl->nt_mask & NEIGHTBL_ATTR_STATS)) + return line; + + dp_new_line(p, line++); + dp_dump(p, " lookups %lld hits %lld failed %lld " \ + "allocations %lld destroys %lld\n", + ntbl->nt_stats.ndts_lookups, + ntbl->nt_stats.ndts_hits, + ntbl->nt_stats.ndts_res_failed, + ntbl->nt_stats.ndts_allocs, + ntbl->nt_stats.ndts_destroys); + + dp_new_line(p, line++); + dp_dump(p, " hash-grows %lld forced-gc-runs %lld " \ + "periodic-gc-runs %lld\n", + ntbl->nt_stats.ndts_hash_grows, + ntbl->nt_stats.ndts_forced_gc_runs, + ntbl->nt_stats.ndts_periodic_gc_runs); + + dp_dump(p, " rcv-unicast-probes %lld rcv-multicast-probes %lld\n", + ntbl->nt_stats.ndts_rcv_probes_ucast, + ntbl->nt_stats.ndts_rcv_probes_mcast); + + return line; +} + +/** + * @name Neighbour Table Object Allocation/Freeage + * @{ + */ + +/** + * Allocate a new neighbour table object + * @return New neighbour table object + */ +struct rtnl_neightbl *rtnl_neightbl_alloc(void) +{ + return (struct rtnl_neightbl *) + nl_object_alloc_from_ops(&rtnl_neightbl_ops); +} + +/** + * Give back reference on neighbour table object. + * @arg neightbl Neighbour table object to be given back. + * + * Decrements the reference counter and frees the object if the + * last reference has been released. + */ +void rtnl_neightbl_put(struct rtnl_neightbl *neightbl) +{ + nl_object_put((struct nl_object *) neightbl); +} +/** + * Free neighbour table object. + * @arg neightbl Neighbour table object to be freed. + * + * @note Always use rtnl_neightbl_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void rtnl_neightbl_free(struct rtnl_neightbl *neightbl) +{ + nl_object_free((struct nl_object *) neightbl); +} + +/** @} */ + +/** + * @name Neighbour Table Cache Management + * @{ + */ + +/** + * Build a neighbour table cache including all neighbour tables currently configured in the kernel. + * @arg handle netlink handle + * + * Allocates a new neighbour table cache, initializes it properly and + * updates it to include all neighbour tables currently configured in + * the kernel. + * + * @note The caller is responsible for destroying and freeing the + * cache after using it. + * @return The new cache or NULL if an error occured. + */ +struct nl_cache * rtnl_neightbl_alloc_cache(struct nl_handle *handle) +{ + struct nl_cache * cache; + + cache = nl_cache_alloc_from_ops(&rtnl_neightbl_ops); + if (cache == NULL) + return NULL; + + if (nl_cache_update(handle, cache) < 0) { + nl_cache_free(cache); + return NULL; + } + + return cache; +} + +/** + * Lookup neighbour table by name and optional interface index + * @arg cache neighbour table cache + * @arg name name of table + * @arg ifindex optional interface index + * + * Looks up the neighbour table matching the specified name and + * optionally the specified ifindex to retrieve device specific + * parameter sets. + * + * @return ptr to neighbour table inside the cache or NULL if no + * match was found. + */ +struct rtnl_neightbl *rtnl_neightbl_get(struct nl_cache *cache, + const char *name, int ifindex) +{ + struct rtnl_neightbl *nt; + + if (cache->c_ops != &rtnl_neightbl_ops) + return NULL; + + nl_list_for_each_entry(nt, &cache->c_items, ce_list) { + if (!strcasecmp(nt->nt_name, name) && + ((!ifindex && !nt->nt_parms.ntp_ifindex) || + (ifindex && ifindex == nt->nt_parms.ntp_ifindex))) { + nl_object_get((struct nl_object *) nt); + return nt; + } + } + + return NULL; +} + +/** @} */ + +/** + * @name Neighbour Table Modifications + * @{ + */ + +/** + * Builds a netlink change request message to change neighbour table attributes + * @arg old neighbour table to change + * @arg tmpl template with requested changes + * + * Builds a new netlink message requesting a change of neighbour table + * attributes. The netlink message header isn't fully equipped with all + * relevant fields and must be sent out via nl_send_auto_complete() or + * supplemented as needed. + * \a old must point to a neighbour table currently configured in the + * kernel and \a tmpl must contain the attributes to be changed set via + * \c rtnl_neightbl_set_* functions. + * + * @return New netlink message + */ +struct nl_msg * rtnl_neightbl_build_change_request(struct rtnl_neightbl *old, + struct rtnl_neightbl *tmpl) +{ + struct nl_msg *m; + struct ndtmsg ndt = { + .ndtm_family = old->nt_family, + }; + + m = nlmsg_build_simple(RTM_SETNEIGHTBL, 0); + nlmsg_append(m, &ndt, sizeof(ndt), 1); + + nla_put_string(m, NDTA_NAME, old->nt_name); + + if (tmpl->nt_mask & NEIGHTBL_ATTR_THRESH1) + nla_put_u32(m, NDTA_THRESH1, tmpl->nt_gc_thresh1); + + if (tmpl->nt_mask & NEIGHTBL_ATTR_THRESH2) + nla_put_u32(m, NDTA_THRESH2, tmpl->nt_gc_thresh2); + + if (tmpl->nt_mask & NEIGHTBL_ATTR_THRESH2) + nla_put_u32(m, NDTA_THRESH2, tmpl->nt_gc_thresh2); + + if (tmpl->nt_mask & NEIGHTBL_ATTR_GC_INTERVAL) + nla_put_u64(m, NDTA_GC_INTERVAL, + tmpl->nt_gc_interval); + + if (tmpl->nt_mask & NEIGHTBL_ATTR_PARMS) { + struct rtnl_neightbl_parms *p = &tmpl->nt_parms; + struct nl_msg *parms = nlmsg_build(NULL); + + if (old->nt_parms.ntp_mask & NEIGHTBLPARM_ATTR_IFINDEX) + nla_put_u32(parms, NDTPA_IFINDEX, + old->nt_parms.ntp_ifindex); + + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_QUEUE_LEN) + nla_put_u32(parms, NDTPA_QUEUE_LEN, p->ntp_queue_len); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_APP_PROBES) + nla_put_u32(parms, NDTPA_APP_PROBES, p->ntp_app_probes); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_UCAST_PROBES) + nla_put_u32(parms, NDTPA_UCAST_PROBES, + p->ntp_ucast_probes); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_MCAST_PROBES) + nla_put_u32(parms, NDTPA_MCAST_PROBES, + p->ntp_mcast_probes); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_PROXY_QLEN) + nla_put_u32(parms, NDTPA_PROXY_QLEN, + p->ntp_proxy_qlen); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_BASE_REACHABLE_TIME) + nla_put_u64(parms, NDTPA_BASE_REACHABLE_TIME, + p->ntp_base_reachable_time); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_RETRANS_TIME) + nla_put_u64(parms, NDTPA_RETRANS_TIME, + p->ntp_retrans_time); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_GC_STALETIME) + nla_put_u64(parms, NDTPA_GC_STALETIME, + p->ntp_gc_stale_time); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_DELAY_PROBE_TIME) + nla_put_u64(parms, NDTPA_DELAY_PROBE_TIME, + p->ntp_proxy_delay); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_ANYCAST_DELAY) + nla_put_u64(parms, NDTPA_ANYCAST_DELAY, + p->ntp_anycast_delay); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_PROXY_DELAY) + nla_put_u64(parms, NDTPA_PROXY_DELAY, + p->ntp_proxy_delay); + + if (p->ntp_mask & NEIGHTBLPARM_ATTR_LOCKTIME) + nla_put_u64(parms, NDTPA_LOCKTIME, p->ntp_locktime); + + nla_put_nested(m, NDTA_PARMS, parms); + nlmsg_free(parms); + } + + return m; +} + +/** + * Change neighbour table attributes + * @arg handle netlink handle + * @arg old neighbour table to be changed + * @arg tmpl template with requested changes + * + * Builds a new netlink message by calling + * rtnl_neightbl_build_change_request(), sends the request to the + * kernel and waits for the next ACK to be received, i.e. blocks + * until the request has been processed. + * + * @return 0 on success or a negative error code + */ +int rtnl_neightbl_change(struct nl_handle *handle, struct rtnl_neightbl *old, + struct rtnl_neightbl *tmpl) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_neightbl_build_change_request(old, tmpl); + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name Attribute Modification + * @{ + */ + +/** + * Set the address family of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg family new address family + */ +void rtnl_neightbl_set_family(struct rtnl_neightbl *ntbl, int family) +{ + ntbl->nt_family = family; + ntbl->nt_mask |= NEIGHTBL_ATTR_FAMILY; +} + +/** + * Set the gc interval of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg ms new interval in milliseconds + */ +void rtnl_neightbl_set_gc_interval(struct rtnl_neightbl *ntbl, uint64_t ms) +{ + ntbl->nt_gc_interval = ms; + ntbl->nt_mask |= NEIGHTBL_ATTR_GC_INTERVAL; +} + +/** + * Set the gc threshold 1 of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg thresh new gc threshold + */ +void rtnl_neightbl_set_gc_tresh1(struct rtnl_neightbl *ntbl, int thresh) +{ + ntbl->nt_gc_thresh1 = thresh; + ntbl->nt_mask |= NEIGHTBL_ATTR_THRESH1; +} + +/** + * Set the gc threshold 2 of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg thresh new gc threshold + */ +void rtnl_neightbl_set_gc_tresh2(struct rtnl_neightbl *ntbl, int thresh) +{ + ntbl->nt_gc_thresh2 = thresh; + ntbl->nt_mask |= NEIGHTBL_ATTR_THRESH2; +} + +/** + * Set the gc threshold 3 of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg thresh new gc threshold + */ +void rtnl_neightbl_set_gc_tresh3(struct rtnl_neightbl *ntbl, int thresh) +{ + ntbl->nt_gc_thresh3 = thresh; + ntbl->nt_mask |= NEIGHTBL_ATTR_THRESH3; +} + +/** + * Set the table name of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg name new table name + */ +void rtnl_neightbl_set_name(struct rtnl_neightbl *ntbl, const char *name) +{ + strncpy(ntbl->nt_name, name, sizeof(ntbl->nt_name) - 1); + ntbl->nt_mask |= NEIGHTBL_ATTR_NAME; +} + +/** + * Set the device of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg ifindex interface index of the device + */ +void rtnl_neightbl_set_dev(struct rtnl_neightbl *ntbl, int ifindex) +{ + ntbl->nt_parms.ntp_ifindex = ifindex; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_IFINDEX; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the queue length for pending requests of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg len new queue len + */ +void rtnl_neightbl_set_queue_len(struct rtnl_neightbl *ntbl, int len) +{ + ntbl->nt_parms.ntp_queue_len = len; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_QUEUE_LEN; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the queue length for delay proxy arp requests of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg len new queue len + */ +void rtnl_neightbl_set_proxy_queue_len(struct rtnl_neightbl *ntbl, int len) +{ + ntbl->nt_parms.ntp_proxy_qlen = len; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_PROXY_QLEN; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the number of application probes of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg probes new probes value + */ +void rtnl_neightbl_set_app_probes(struct rtnl_neightbl *ntbl, int probes) +{ + ntbl->nt_parms.ntp_app_probes = probes; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_APP_PROBES; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the number of unicast probes of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg probes new probes value + */ +void rtnl_neightbl_set_ucast_probes(struct rtnl_neightbl *ntbl, int probes) +{ + ntbl->nt_parms.ntp_ucast_probes = probes; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_UCAST_PROBES; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the number of multicast probes of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg probes new probes value + */ +void rtnl_neightbl_set_mcast_probes(struct rtnl_neightbl *ntbl, int probes) +{ + ntbl->nt_parms.ntp_mcast_probes = probes; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_MCAST_PROBES; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the base reachable time of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg ms new base reachable time in milliseconds + */ +void rtnl_neightbl_set_base_reachable_time(struct rtnl_neightbl *ntbl, + uint64_t ms) +{ + ntbl->nt_parms.ntp_base_reachable_time = ms; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_BASE_REACHABLE_TIME; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the retransmit time of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg ms new retransmit time + */ +void rtnl_neightbl_set_retrans_time(struct rtnl_neightbl *ntbl, uint64_t ms) +{ + ntbl->nt_parms.ntp_retrans_time = ms; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_RETRANS_TIME; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the gc stale time of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg ms new gc stale time in milliseconds + */ +void rtnl_neightbl_set_gc_stale_time(struct rtnl_neightbl *ntbl, uint64_t ms) +{ + ntbl->nt_parms.ntp_gc_stale_time = ms; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_GC_STALETIME; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the first probe delay time of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg ms new first probe delay time in milliseconds + */ +void rtnl_neightbl_set_delay_probe_time(struct rtnl_neightbl *ntbl, uint64_t ms) +{ + ntbl->nt_parms.ntp_probe_delay = ms; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_DELAY_PROBE_TIME; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the anycast delay of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg ms new anycast delay in milliseconds + */ +void rtnl_neightbl_set_anycast_delay(struct rtnl_neightbl *ntbl, uint64_t ms) +{ + ntbl->nt_parms.ntp_anycast_delay = ms; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_ANYCAST_DELAY; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the proxy delay of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg ms new proxy delay in milliseconds + */ +void rtnl_neightbl_set_proxy_delay(struct rtnl_neightbl *ntbl, uint64_t ms) +{ + ntbl->nt_parms.ntp_proxy_delay = ms; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_PROXY_DELAY; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** + * Set the locktime of a neighbour table to the specified value + * @arg ntbl neighbour table to change + * @arg ms new locktime in milliseconds + */ +void rtnl_neightbl_set_locktime(struct rtnl_neightbl *ntbl, uint64_t ms) +{ + ntbl->nt_parms.ntp_locktime = ms; + ntbl->nt_parms.ntp_mask |= NEIGHTBLPARM_ATTR_LOCKTIME; + ntbl->nt_mask |= NEIGHTBL_ATTR_PARMS; +} + +/** @} */ + +static struct nl_cache_ops rtnl_neightbl_ops = { + .co_name = "route/neightbl", + .co_size = sizeof(struct rtnl_neightbl), + .co_hdrsize = sizeof(struct rtgenmsg), + .co_msgtypes = { + { RTM_NEWNEIGHTBL, "new" }, + { RTM_SETNEIGHTBL, "set" }, + { RTM_GETNEIGHTBL, "get" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_ROUTE, + .co_request_update = &neightbl_request_update, + .co_msg_parser = &neightbl_msg_parser, + .co_dump[NL_DUMP_BRIEF] = &neightbl_dump_brief, + .co_dump[NL_DUMP_FULL] = &neightbl_dump_full, + .co_dump[NL_DUMP_STATS] = &neightbl_dump_stats, + .co_filter = &neightbl_filter, +}; + +static void __init neightbl_init(void) +{ + nl_cache_mngt_register(&rtnl_neightbl_ops); +} + +static void __exit neightbl_exit(void) +{ + nl_cache_mngt_unregister(&rtnl_neightbl_ops); +} + +/** @} */ diff --git a/lib/route/nexthop.c b/lib/route/nexthop.c new file mode 100644 index 0000000..720ceb5 --- /dev/null +++ b/lib/route/nexthop.c @@ -0,0 +1,207 @@ +/* + * lib/route/nexthop.c Routing Nexthop + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup route + * @defgroup nexthop Nexthop + * @brief + * @{ + */ + +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define NEXTHOP_HAS_FLAGS 0x000001 +#define NEXTHOP_HAS_WEIGHT 0x000002 +#define NEXTHOP_HAS_IFINDEX 0x000004 +#define NEXTHOP_HAS_GATEWAY 0x000008 +/** @endcond */ + +/** + * @name Nexthop Allocation/Freeage + * @{ + */ + +/** + * Allocate a routing nexthop. + * @return Newly allocated routing nexthop object. + */ +struct rtnl_nexthop *rtnl_route_nh_alloc(void) +{ + struct rtnl_nexthop *nh; + + nh = calloc(1, sizeof(*nh)); + if (!nh) { + nl_errno(ENOMEM); + return NULL; + } + + nl_init_list_head(&nh->rtnh_list); + + return nh; +} + +/** + * Free a routing nexthop. + * @arg nh Routing nexthop to be freed. + */ +void rtnl_route_nh_free(struct rtnl_nexthop *nh) +{ + nl_addr_put(nh->rtnh_gateway); + free(nh); +} + +/** @} */ +/** + * @name Attribute: Weight + */ + +/** + * Set weight of routing nexthop. + * @arg nh Routing nexthop. + * @arg weight New weight value. + */ +void rtnl_route_nh_set_weight(struct rtnl_nexthop *nh, int weight) +{ + nh->rtnh_weight = weight; + nh->rtnh_mask |= NEXTHOP_HAS_WEIGHT; +} + +/** + * Get weight of routing nexthop. + * @arg nh Routing nexthop. + * @return Weight value or 0 if not available. + */ +int rtnl_route_nh_get_weight(struct rtnl_nexthop *nh) +{ + if (nh->rtnh_mask & NEXTHOP_HAS_WEIGHT) + return nh->rtnh_weight; + else + return 0; +} + +/** @} */ +/** + * @name Attribute: Interface Index + * @{ + */ + +/** + * Set interface index for outgoing interface of routing nexthop. + * @arg nh Routing nexthop. + * @arg ifindex New interface index. + */ +void rtnl_route_nh_set_ifindex(struct rtnl_nexthop *nh, int ifindex) +{ + nh->rtnh_ifindex = ifindex; + nh->rtnh_mask |= NEXTHOP_HAS_IFINDEX; +} + +/** + * Get interface index of outgoing index of routing nexthop. + * @arg nh Routing nexthop. + * @return Interface index or -1 if not available. + */ +int rtnl_route_nh_get_ifindex(struct rtnl_nexthop *nh) +{ + if (nh->rtnh_mask & NEXTHOP_HAS_IFINDEX) + return nh->rtnh_ifindex; + else + return -1; +} + +/** @} */ +/** + * @name Attribute: Gateway Address + * @{ + */ + +/** + * Set gateway address of routing nexthop. + * @arg nh Routing nexthop. + * @arg addr New gateway address. + * + * An eventual existing gateway address will be freed and a + * reference is acquried of the new address. + */ +void rtnl_route_nh_set_gateway(struct rtnl_nexthop *nh, struct nl_addr *addr) +{ + struct nl_addr *old = nh->rtnh_gateway; + + nh->rtnh_gateway = nl_addr_get(addr); + if (old) + nl_addr_put(old); + + nh->rtnh_mask |= NEXTHOP_HAS_GATEWAY; +} + +/** + * Get gateway address of routing nexthop. + * @arg nh Routing nexthop. + * @return Gateway address or NULL if not available. + */ +struct nl_addr *rtnl_route_nh_get_gateway(struct rtnl_nexthop *nh) +{ + if (nh->rtnh_mask & NEXTHOP_HAS_GATEWAY) + return nh->rtnh_gateway; + else + return NULL; +} + +/** @} */ +/** + * @name Attribute: Flags + * @{ + */ + +/** + * Set flags of routing nexthop. + * @arg nh Routing nexthop. + * @arg flags Flags to be set. + */ +void rtnl_route_nh_set_flags(struct rtnl_nexthop *nh, unsigned int flags) +{ + nh->rtnh_flag_mask |= flags; + nh->rtnh_flags |= flags; + nh->rtnh_mask |= NEXTHOP_HAS_FLAGS; +} + +/** + * Unset flags of routing nexthop. + * @arg nh Routing nexthop. + * @arg flags Flags to be unset. + */ +void rtnl_route_nh_unset_flags(struct rtnl_nexthop *nh, unsigned int flags) +{ + nh->rtnh_flag_mask |= flags; + nh->rtnh_flags &= ~flags; + nh->rtnh_mask |= NEXTHOP_HAS_FLAGS; +} + +/** + * Get flags of routing nexthop. + * @arg nh Routing nexthop. + * @return Flags or 0 if not available. + */ +unsigned int rtnl_route_nh_get_flags(struct rtnl_nexthop *nh) +{ + if (nh->rtnh_mask & NEXTHOP_HAS_FLAGS) + return nh->rtnh_flags; + else + return 0; +} + +/** @} */ +/** @} */ diff --git a/lib/route/qdisc.c b/lib/route/qdisc.c new file mode 100644 index 0000000..c2c70fa --- /dev/null +++ b/lib/route/qdisc.c @@ -0,0 +1,841 @@ +/* + * lib/route/qdisc.c Queueing Disciplines + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup tc + * @defgroup qdisc Queueing Disciplines + * + * @par Qdisc Handles + * In general, qdiscs are identified by the major part of a traffic control + * handle (the upper 16 bits). A few special values exist though: + * - \c TC_H_ROOT: root qdisc (directly attached to the device) + * - \c TC_H_INGRESS: ingress qdisc (directly attached to the device) + * - \c TC_H_UNSPEC: unspecified qdisc (no reference) + * + * @par 1) Adding a Qdisc + * @code + * // Allocate a new empty qdisc to be filled out + * struct rtnl_qdisc *qdisc = rtnl_qdisc_alloc(); + * + * // ... specify the kind of the Qdisc + * rtnl_qdisc_set_kind(qdisc, "pfifo"); + * + * // Specify the device the qdisc should be attached to + * rtnl_qdisc_set_ifindex(qdisc, ifindex); + * + * // ... specify the parent qdisc + * rtnl_qdisc_set_parent(qdisc, TC_H_ROOT); + * + * // Specifying the handle is not required but makes reidentifying easier + * // and may help to avoid adding a qdisc twice. + * rtnl_qdisc_set_handle(qdisc, 0x000A0000); + * + * // Now on to specify the qdisc specific options, see the relevant qdisc + * // modules for documentation, in this example we set the upper limit of + * // the packet fifo qdisc to 64 + * rtnl_qdisc_fifo_set_limit(qdisc, 64); + * + * rtnl_qdisc_add(handle, qdisc, NLM_R_REPLACE); + * + * // Free up the memory + * rtnl_qdisc_put(qdisc); + * @endcode + * + * @par 2) Deleting a Qdisc + * @code + * // Allocate a new empty qdisc to be filled out with the parameters + * // specifying the qdisc to be deleted. Alternatively a fully equiped + * // Qdisc object from a cache can be used. + * struct rtnl_qdisc *qdisc = rtnl_qdisc_alloc(); + * + * // The interface index of the device the qdisc is on and the parent handle + * // are the least required fields to be filled out. + * // Note: Specify TC_H_ROOT or TC_H_INGRESS as parent handle to delete the + * // root respectively root ingress qdisc. + * rtnl_qdisc_set_ifindex(qdisc, ifindex); + * rtnl_qdisc_set_parent(qdisc, parent_handle); + * + * // If required for identification, the handle can be specified as well. + * rtnl_qdisc_set_handle(qdisc, qdisc_handle); + * + * // Not required but maybe helpful as sanity check, the kind of the qdisc + * // can be specified to avoid mistakes. + * rtnl_qdisc_set_kind(qdisc, "pfifo"); + * + * // Finally delete the qdisc with rtnl_qdisc_delete(), alternatively + * // rtnl_qdisc_build_delete_request() can be invoked to generate an + * // appropritate netlink message to send out. + * rtnl_qdisc_delete(handle, qdisc); + * + * // Free up the memory + * rtnl_qdisc_put(qdisc); + * @endcode + * + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +static struct nl_cache_ops rtnl_qdisc_ops; +/** @endcond */ + +static struct rtnl_qdisc_ops *qdisc_ops_list; + +static struct rtnl_qdisc_ops *qdisc_lookup_ops(const char *kind) +{ + struct rtnl_qdisc_ops *ops; + + for (ops = qdisc_ops_list; ops; ops = ops->qo_next) + if (!strcmp(kind, ops->qo_kind)) + return ops; + + return NULL; +} + +static inline struct rtnl_qdisc_ops *qdisc_ops(struct rtnl_qdisc *qdisc) +{ + if (!qdisc->q_ops) + qdisc->q_ops = qdisc_lookup_ops(qdisc->q_kind); + + return qdisc->q_ops; +} + +/** + * @name QDisc Module API + * @{ + */ + +/** + * Register a qdisc module + * @arg ops qdisc module operations + */ +int rtnl_qdisc_register(struct rtnl_qdisc_ops *ops) +{ + struct rtnl_qdisc_ops *o, **op; + + if (!ops->qo_kind[0]) + BUG(); + + for (op = &qdisc_ops_list; (o = *op) != NULL; op = &o->qo_next) + if (!strcasecmp(ops->qo_kind, o->qo_kind)) + return nl_errno(EEXIST); + + ops->qo_next = NULL; + *op = ops; + + return 0; +} + +/** + * Unregister a qdisc module + * @arg ops qdisc module operations + */ +int rtnl_qdisc_unregister(struct rtnl_qdisc_ops *ops) +{ + struct rtnl_qdisc_ops *o, **op; + + for (op = &qdisc_ops_list; (o = *op) != NULL; op = &o->qo_next) + if (!strcasecmp(ops->qo_kind, o->qo_kind)) + break; + + if (!o) + return nl_errno(ENOENT); + + *op = ops->qo_next; + + return 0; +} + +/** @} */ + +static int qdisc_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *n, + void *arg) +{ + int err = -ENOMEM; + struct nl_parser_param *pp = arg; + struct rtnl_qdisc *qdisc; + struct rtnl_qdisc_ops *ops; + + qdisc = rtnl_qdisc_alloc(); + if (!qdisc) { + err = nl_errno(ENOMEM); + goto errout; + } + + qdisc->ce_msgtype = n->nlmsg_type; + + err = tca_msg_parser(n, (struct rtnl_tca *) qdisc); + if (err < 0) + goto errout_free; + + ops = qdisc_ops(qdisc); + if (ops && ops->qo_msg_parser) { + err = ops->qo_msg_parser(qdisc); + if (err < 0) + goto errout_free; + } + + err = pp->pp_cb((struct nl_object *) qdisc, pp); + if (err < 0) + goto errout_free; + + return P_ACCEPT; + +errout_free: + rtnl_qdisc_put(qdisc); +errout: + return err; +} + +static int qdisc_request_update(struct nl_cache *c, struct nl_handle *h) +{ + struct tcmsg tchdr = { + .tcm_family = AF_UNSPEC, + .tcm_ifindex = c->c_iarg1, + }; + + return nl_send_simple(h, RTM_GETQDISC, NLM_F_DUMP, &tchdr, + sizeof(tchdr)); +} + +static void qdisc_free_data(struct nl_object *obj) +{ + struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) obj; + struct rtnl_qdisc_ops *ops; + + tca_free_data((struct rtnl_tca *) qdisc); + + ops = qdisc_ops(qdisc); + if (ops && ops->qo_free_data) + ops->qo_free_data(qdisc); +} + +static int qdisc_dump_brief(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) obj; + struct rtnl_qdisc_ops *ops; + + int line = tca_dump_brief((struct rtnl_tca *) qdisc, "qdisc", p, 0); + + ops = qdisc_ops(qdisc); + if (ops && ops->qo_dump[NL_DUMP_BRIEF]) + line = ops->qo_dump[NL_DUMP_BRIEF](qdisc, p, line); + + dp_dump(p, "\n"); + + return line; +} + +static int qdisc_dump_full(struct nl_object *arg, struct nl_dump_params *p) +{ + struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) arg; + struct rtnl_qdisc_ops *ops; + + int line = qdisc_dump_brief(arg, p); + + line = tca_dump_full((struct rtnl_tca *) qdisc, p, line); + dp_dump(p, "refcnt %u ", qdisc->q_info); + + ops = qdisc_ops(qdisc); + if (ops && ops->qo_dump[NL_DUMP_FULL]) + line = ops->qo_dump[NL_DUMP_FULL](qdisc, p, line); + + dp_dump(p, "\n"); + return line; +} + +static int qdisc_dump_stats(struct nl_object *arg, struct nl_dump_params *p) +{ + struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) arg; + struct rtnl_qdisc_ops *ops; + + int line = qdisc_dump_full(arg, p); + line = tca_dump_stats((struct rtnl_tca *) qdisc, p, line ); + dp_dump(p, "\n"); + + ops = qdisc_ops(qdisc); + if (ops && ops->qo_dump[NL_DUMP_STATS]) + line = ops->qo_dump[NL_DUMP_STATS](qdisc, p, line); + + return line; +} + +static int qdisc_filter(struct nl_object *obj, struct nl_object *filter) +{ + return tca_filter((struct rtnl_tca *) obj, (struct rtnl_tca *) filter); +} + +/** + * @name QDisc Addition + * @{ + */ + +static struct nl_msg *qdisc_build(struct rtnl_qdisc *qdisc, int type, int flags) +{ + struct rtnl_qdisc_ops *ops; + struct nl_msg *msg; + int err; + + msg = tca_build_msg((struct rtnl_tca *) qdisc, type, flags); + if (!msg) + goto errout; + + ops = qdisc_ops(qdisc); + if (ops && ops->qo_get_opts) { + struct nl_msg *opts; + + opts = ops->qo_get_opts(qdisc); + if (opts) { + err = nla_put_nested(msg, TCA_OPTIONS, opts); + nlmsg_free(opts); + if (err < 0) + goto errout; + } + } + + return msg; +errout: + nlmsg_free(msg); + + return NULL; +} + +/** + * Build a netlink message to add a new qdisc + * @arg qdisc qdisc to add + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting an addition of a qdisc. + * The netlink message header isn't fully equipped with all relevant + * fields and must be sent out via nl_send_auto_complete() or + * supplemented as needed. + * + * Common message flags used: + * - NLM_F_REPLACE - replace a potential existing qdisc + * + * @return New netlink message + */ +struct nl_msg *rtnl_qdisc_build_add_request(struct rtnl_qdisc *qdisc, + int flags) +{ + struct nl_msg *msg; + + msg = qdisc_build(qdisc, RTM_NEWQDISC, NLM_F_CREATE | flags); + if (!msg) + nl_errno(ENOMEM); + + return msg; +} + +/** + * Add a new qdisc + * @arg handle netlink handle + * @arg qdisc qdisc to delete + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_qdisc_build_add_request(), + * sends the request to the kernel and waits for the ACK to be + * received and thus blocks until the request has been processed. + * + * Common message flags used: + * - NLM_F_REPLACE - replace a potential existing qdisc + * + * @return 0 on success or a negative error code + */ +int rtnl_qdisc_add(struct nl_handle *handle, struct rtnl_qdisc *qdisc, + int flags) +{ + struct nl_msg *msg; + int err; + + msg = rtnl_qdisc_build_add_request(qdisc, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name QDisc Modification + * @{ + */ + +/** + * Build a netlink message to change attributes of a existing qdisc + * @arg qdisc qdisc to change + * @arg new new qdisc attributes + * + * Builds a new netlink message requesting an change of qdisc + * attributes. The netlink message header isn't fully equipped + * with all relevant fields and must be sent out via + * nl_send_auto_complete() or supplemented as needed. + * + * @return New netlink message + */ +struct nl_msg *rtnl_qdisc_build_change_request(struct rtnl_qdisc *qdisc, + struct rtnl_qdisc *new) +{ + return qdisc_build(qdisc, RTM_NEWQDISC, NLM_F_REPLACE); +} + +/** + * Change attributes of a qdisc + * @arg handle netlink handle + * @arg qdisc qdisc to change + * @arg new new qdisc attributes + * + * Builds a netlink message by calling rtnl_qdisc_build_change_request(), + * sends the request to the kernel and waits for the ACK to be + * received and thus blocks until the request has been processed. + * + * @return 0 on success or a negative error code + */ +int rtnl_qdisc_change(struct nl_handle *handle, struct rtnl_qdisc *qdisc, + struct rtnl_qdisc *new) +{ + struct nl_msg *msg; + int err; + + msg = rtnl_qdisc_build_change_request(qdisc, new); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name QDisc Deletion + * @{ + */ + +/** + * Build a netlink request message to delete a qdisc + * @arg qdisc qdisc to delete + * + * Builds a new netlink message requesting a deletion of a qdisc. + * The netlink message header isn't fully equipped with all relevant + * fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. + * + * @return New netlink message + */ +struct nl_msg *rtnl_qdisc_build_delete_request(struct rtnl_qdisc *qdisc) +{ + struct nl_msg *msg; + struct tcmsg tchdr; + int required = TCA_ATTR_IFINDEX | TCA_ATTR_PARENT; + + if ((qdisc->q_mask & required) != required) + BUG(); + + msg = nlmsg_build_simple(RTM_DELQDISC, 0); + if (!msg) + return NULL; + + tchdr.tcm_family = AF_UNSPEC, + tchdr.tcm_handle = qdisc->q_handle, + tchdr.tcm_parent = qdisc->q_parent, + tchdr.tcm_ifindex = qdisc->q_ifindex, + nlmsg_append(msg, &tchdr, sizeof(tchdr), 1); + + return msg; +} + +/** + * Delete a qdisc + * @arg handle netlink handle + * @arg qdisc qdisc to delete + * + * Builds a netlink message by calling rtnl_qdisc_build_delete_request(), + * sends the request to the kernel and waits for the ACK to be + * received and thus blocks until the request has been processed. + * + * @return 0 on success or a negative error code + */ +int rtnl_qdisc_delete(struct nl_handle *handle, struct rtnl_qdisc *qdisc) +{ + struct nl_msg *msg; + int err; + + msg = rtnl_qdisc_build_delete_request(qdisc); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name General + * @{ + */ + +/** + * Allocate a new qdisc object + * @return New qdisc object + */ +struct rtnl_qdisc *rtnl_qdisc_alloc(void) +{ + return (struct rtnl_qdisc *) nl_object_alloc_from_ops(&rtnl_qdisc_ops); +} + +/** + * Give back reference on rqdisc object. + * @arg qdisc Qdisc object to be given back. + * + * Decrements the reference counter and frees the object if the + * last reference has been released. + */ +void rtnl_qdisc_put(struct rtnl_qdisc *qdisc) +{ + nl_object_put((struct nl_object *) qdisc); +} +/** + * Free qdisc object. + * @arg qdisc Qdisc object to be freed. + * + * @note Always use rtnl_qdisc_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void rtnl_qdisc_free(struct rtnl_qdisc *qdisc) +{ + nl_object_free((struct nl_object *) qdisc); +} + +/** @} */ + +/** + * @name Qdisc Cache Management + * @{ + */ + +/** + * Build a qdisc cache including all qdiscs currently configured in + * the kernel + * @arg handle netlink handle + * + * Allocates a new cache, initializes it properly and updates it to + * include all qdiscs currently configured in the kernel. + * + * @note The caller is responsible for destroying and freeing the + * cache after using it. + * @return The cache or NULL if an error has occured. + */ +struct nl_cache * rtnl_qdisc_alloc_cache(struct nl_handle *handle) +{ + struct nl_cache * cache; + + cache = nl_cache_alloc_from_ops(&rtnl_qdisc_ops); + if (cache == NULL) + return NULL; + + if (nl_cache_update(handle, cache) < 0) { + nl_cache_free(cache); + return NULL; + } + + return cache; +} + +/** + * Look up qdisc by its parent in the provided cache + * @arg cache qdisc cache + * @arg ifindex interface the qdisc is attached to + * @arg parent parent handle + * @return pointer to qdisc inside the cache or NULL if no match was found. + */ +struct rtnl_qdisc * rtnl_qdisc_get_by_parent(struct nl_cache *cache, + int ifindex, uint32_t parent) +{ + struct rtnl_qdisc *q; + + if (cache->c_ops != &rtnl_qdisc_ops) + return NULL; + + nl_list_for_each_entry(q, &cache->c_items, ce_list) { + if (q->q_parent == parent && q->q_ifindex == ifindex) { + nl_object_get((struct nl_object *) q); + return q; + } + } + + return NULL; +} + +/** + * Look up qdisc by its handle in the provided cache + * @arg cache qdisc cache + * @arg ifindex interface the qdisc is attached to + * @arg handle qdisc handle + * @return pointer to qdisc inside the cache or NULL if no match was found. + */ +struct rtnl_qdisc * rtnl_qdisc_get(struct nl_cache *cache, + int ifindex, uint32_t handle) +{ + struct rtnl_qdisc *q; + + if (cache->c_ops != &rtnl_qdisc_ops) + return NULL; + + nl_list_for_each_entry(q, &cache->c_items, ce_list) { + if (q->q_handle == handle && q->q_ifindex == ifindex) { + nl_object_get((struct nl_object *) q); + return q; + } + } + + return NULL; +} + +/** @} */ + +/** + * @name Qdisc Specific Options + * @{ + */ + +/** + * Return qdisc specific options for use in TCA_OPTIONS + * @arg qdisc qdisc carrying the optiosn + * + * @return new headerless netlink message carrying the options as payload + */ +struct nl_msg *rtnl_qdisc_get_opts(struct rtnl_qdisc *qdisc) +{ + struct rtnl_qdisc_ops *ops; + + ops = qdisc_ops(qdisc); + if (ops && ops->qo_get_opts) + return ops->qo_get_opts(qdisc); + + return NULL; +} + +/** @} */ + +/** + * @name Iterators + * @{ + */ + +/** + * Call a callback for each child class of a qdisc + * @arg qdisc the parent qdisc + * @arg cache a class cache including all classes of the interface + * the specified qdisc is attached to + * @arg cb callback function + * @arg arg argument to be passed to callback function + */ +void rtnl_qdisc_foreach_child(struct rtnl_qdisc *qdisc, struct nl_cache *cache, + void (*cb)(struct nl_object *, void *), void *arg) +{ + struct rtnl_class *filter; + + filter = rtnl_class_alloc(); + if (!filter) + return; + + rtnl_class_set_parent(filter, qdisc->q_handle); + rtnl_class_set_ifindex(filter, qdisc->q_ifindex); + rtnl_class_set_kind(filter, qdisc->q_kind); + + nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg); + + rtnl_class_put(filter); +} + +/** + * Call a callback for each filter attached to the qdisc + * @arg qdisc the parent qdisc + * @arg cache a filter cache including at least all the filters + * attached to the specified qdisc + * @arg cb callback function + * @arg arg argument to be passed to callback function + */ +void rtnl_qdisc_foreach_cls(struct rtnl_qdisc *qdisc, struct nl_cache *cache, + void (*cb)(struct nl_object *, void *), void *arg) +{ + struct rtnl_cls *filter; + + filter = rtnl_cls_alloc(); + if (!filter) + return; + + rtnl_cls_set_ifindex(filter, qdisc->q_ifindex); + rtnl_cls_set_parent(filter, qdisc->q_parent); + + nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg); + rtnl_cls_put(filter); +} + +/** @} */ + +/** + * @name Attribute Modification + * @{ + */ + +/** + * Set the interface index of a qdisc to the specified value + * @arg qdisc qdisc to be changed + * @arg ifindex new interface index + */ +void rtnl_qdisc_set_ifindex(struct rtnl_qdisc *qdisc, int ifindex) +{ + tca_set_ifindex((struct rtnl_tca *) qdisc, ifindex); +} + +/** + * Get the interface index of a qdisc + * @arg qdisc qdisc handle + * @return Interface index or RTNL_LINK_NOT_FOUND if not set + */ +int rtnl_qdisc_get_ifindex(struct rtnl_qdisc *qdisc) +{ + return tca_get_ifindex((struct rtnl_tca *) qdisc); +} + +/** + * Set the handle of a qdisc to the specified value + * @arg qdisc qdisc to be changed + * @arg handle new handle + */ +void rtnl_qdisc_set_handle(struct rtnl_qdisc *qdisc, uint32_t handle) +{ + tca_set_handle((struct rtnl_tca *) qdisc, handle); +} + +/** + * Get the handle of a qdisc + * @arg qdisc qdisc handle + * @return Handle or 0 if not set + */ +uint32_t rtnl_qdisc_get_handle(struct rtnl_qdisc *qdisc) +{ + return tca_get_handle((struct rtnl_tca *) qdisc); +} + +/** + * Set the parent handle of a qdisc to the specified value + * @arg qdisc qdisc to be changed + * @arg parent new parent handle + */ +void rtnl_qdisc_set_parent(struct rtnl_qdisc *qdisc, uint32_t parent) +{ + tca_set_parent((struct rtnl_tca *) qdisc, parent); +} + +/** + * Get the parent handle of a qdisc + * @arg qdisc qdisc handle + * @return Parent handle or 0 if not set + */ +uint32_t rtnl_qdisc_get_parent(struct rtnl_qdisc *qdisc) +{ + return tca_get_parent((struct rtnl_tca *) qdisc); +} + +/** + * Set the kind of a qdisc to the specified value + * @arg qdisc qdisc to be changed + * @arg name new kind name + */ +void rtnl_qdisc_set_kind(struct rtnl_qdisc *qdisc, const char *name) +{ + tca_set_kind((struct rtnl_tca *) qdisc, name); + qdisc->q_ops = qdisc_lookup_ops(name); +} + +/** + * Get the kind of a qdisc + * @arg qdisc qdisc handle + * @return Kind or NULL if not set + */ +char *rtnl_qdisc_get_kind(struct rtnl_qdisc *qdisc) +{ + return tca_get_kind((struct rtnl_tca *) qdisc); +} + +/** + * Get the statistic specified by the id + * @arg qdisc qdisc handle + * @arg id statistic id + * @return The current counter of the specified statistic + */ +uint64_t rtnl_qdisc_get_stat(struct rtnl_qdisc *qdisc, + enum rtnl_tc_stats_id id) +{ + return tca_get_stat((struct rtnl_tca *) qdisc, id); +} + +/** @} */ + +static struct nl_cache_ops rtnl_qdisc_ops = { + .co_name = "route/qdisc", + .co_size = sizeof(struct rtnl_qdisc), + .co_hdrsize = sizeof(struct tcmsg), + .co_msgtypes = { + { RTM_NEWQDISC, "new" }, + { RTM_DELQDISC, "delete" }, + { RTM_GETQDISC, "get" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_ROUTE, + .co_request_update = qdisc_request_update, + .co_msg_parser = qdisc_msg_parser, + .co_free_data = qdisc_free_data, + .co_dump[NL_DUMP_BRIEF] = qdisc_dump_brief, + .co_dump[NL_DUMP_FULL] = qdisc_dump_full, + .co_dump[NL_DUMP_STATS] = qdisc_dump_stats, + .co_filter = qdisc_filter, +}; + +static void __init qdisc_init(void) +{ + nl_cache_mngt_register(&rtnl_qdisc_ops); +} + +static void __exit qdisc_exit(void) +{ + nl_cache_mngt_unregister(&rtnl_qdisc_ops); +} + +/** @} */ diff --git a/lib/route/route.c b/lib/route/route.c new file mode 100644 index 0000000..7602853 --- /dev/null +++ b/lib/route/route.c @@ -0,0 +1,1772 @@ +/* + * lib/route/route.c Routes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup rtnl + * @defgroup route Routing + * @brief + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define ROUTE_ATTR_FAMILY 0x000001 +#define ROUTE_ATTR_DST_LEN 0x000002 +#define ROUTE_ATTR_SRC_LEN 0x000004 +#define ROUTE_ATTR_TOS 0x000008 +#define ROUTE_ATTR_TABLE 0x000010 +#define ROUTE_ATTR_PROTOCOL 0x000020 +#define ROUTE_ATTR_SCOPE 0x000040 +#define ROUTE_ATTR_TYPE 0x000080 +#define ROUTE_ATTR_FLAGS 0x000100 +#define ROUTE_ATTR_DST 0x000200 +#define ROUTE_ATTR_SRC 0x000400 +#define ROUTE_ATTR_IIF 0x000800 +#define ROUTE_ATTR_OIF 0x001000 +#define ROUTE_ATTR_GATEWAY 0x002000 +#define ROUTE_ATTR_PRIO 0x004000 +#define ROUTE_ATTR_PREF_SRC 0x008000 +#define ROUTE_ATTR_METRICS 0x010000 +#define ROUTE_ATTR_MULTIPATH 0x020000 +#define ROUTE_ATTR_REALMS 0x040000 +#define ROUTE_ATTR_CACHEINFO 0x080000 +#define ROUTE_ATTR_MP_ALGO 0x100000 + +#define NEXTHOP_HAS_FLAGS 0x000001 +#define NEXTHOP_HAS_WEIGHT 0x000002 +#define NEXTHOP_HAS_IFINDEX 0x000004 +#define NEXTHOP_HAS_GATEWAY 0x000008 + +static struct nl_cache_ops rtnl_route_ops; +/** @endcond */ + +static void route_constructor(struct nl_object *c) +{ + struct rtnl_route *r = (struct rtnl_route *) c; + + nl_init_list_head(&r->rt_nexthops); +} + +static void route_free_data(struct nl_object *c) +{ + struct rtnl_route *r = (struct rtnl_route *) c; + struct rtnl_nexthop *nh, *tmp; + + if (r == NULL) + return; + + nl_addr_put(r->rt_dst); + nl_addr_put(r->rt_src); + nl_addr_put(r->rt_gateway); + nl_addr_put(r->rt_pref_src); + + nl_list_for_each_entry_safe(nh, tmp, &r->rt_nexthops, rtnh_list) { + rtnl_route_remove_nexthop(nh); + rtnl_route_nh_free(nh); + } +} + +static struct nla_policy route_policy[RTA_MAX+1] = { + [RTA_IIF] = { .type = NLA_STRING, + .maxlen = IFNAMSIZ, }, + [RTA_OIF] = { .type = NLA_U32 }, + [RTA_PRIORITY] = { .type = NLA_U32 }, + [RTA_FLOW] = { .type = NLA_U32 }, + [RTA_MP_ALGO] = { .type = NLA_U32 }, + [RTA_CACHEINFO] = { .minlen = sizeof(struct rta_cacheinfo) }, + [RTA_METRICS] = { .type = NLA_NESTED }, + [RTA_MULTIPATH] = { .type = NLA_NESTED }, +}; + +static void copy_rtmsg_into_route(struct rtmsg *rtmsg, struct rtnl_route *route) +{ + route->rt_family = rtmsg->rtm_family; + route->rt_dst_len = rtmsg->rtm_dst_len; + route->rt_src_len = rtmsg->rtm_src_len; + route->rt_tos = rtmsg->rtm_tos; + route->rt_table = rtmsg->rtm_table; + route->rt_type = rtmsg->rtm_type; + route->rt_scope = rtmsg->rtm_scope; + route->rt_protocol = rtmsg->rtm_protocol; + route->rt_flags = rtmsg->rtm_flags; + + route->rt_mask = (ROUTE_ATTR_FAMILY | ROUTE_ATTR_DST_LEN | + ROUTE_ATTR_SRC_LEN | ROUTE_ATTR_TABLE | + ROUTE_ATTR_PROTOCOL| ROUTE_ATTR_SCOPE | + ROUTE_ATTR_TYPE | ROUTE_ATTR_FLAGS); + + if (route->rt_tos) + route->rt_mask |= ROUTE_ATTR_TOS; +} + +static void copy_cacheinfo_into_route(struct rta_cacheinfo *ci, + struct rtnl_route *route) +{ + route->rt_cacheinfo.rtci_clntref = ci->rta_clntref; + route->rt_cacheinfo.rtci_last_use = ci->rta_lastuse; + route->rt_cacheinfo.rtci_expires = ci->rta_expires; + route->rt_cacheinfo.rtci_error = ci->rta_error; + route->rt_cacheinfo.rtci_used = ci->rta_used; + route->rt_cacheinfo.rtci_id = ci->rta_id; + route->rt_cacheinfo.rtci_ts = ci->rta_ts; + route->rt_cacheinfo.rtci_tsage = ci->rta_tsage; + + route->rt_mask |= ROUTE_ATTR_CACHEINFO; +} + +static int route_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *nlh, + void *arg) +{ + struct nl_parser_param *pp = arg; + struct rtnl_route *route; + struct nlattr *tb[RTA_MAX + 1]; + int err; + + route = rtnl_route_alloc(); + if (!route) { + err = nl_errno(ENOMEM); + goto errout; + } + + route->ce_msgtype = nlh->nlmsg_type; + + err = nlmsg_parse(nlh, sizeof(struct rtmsg), tb, RTA_MAX, + route_policy); + if (err < 0) + goto errout; + + copy_rtmsg_into_route((struct rtmsg *) nlmsg_data(nlh), route); + + if (tb[RTA_DST]) { + route->rt_dst = nla_get_addr(tb[RTA_DST], route->rt_family); + if (!route->rt_dst) + goto errout_errno; + nl_addr_set_prefixlen(route->rt_dst, route->rt_dst_len); + route->rt_mask |= ROUTE_ATTR_DST; + } + + if (tb[RTA_SRC]) { + route->rt_src = nla_get_addr(tb[RTA_SRC], route->rt_family); + if (!route->rt_src) + goto errout_errno; + nl_addr_set_prefixlen(route->rt_src, route->rt_src_len); + route->rt_mask |= ROUTE_ATTR_SRC; + } + + if (tb[RTA_IIF]) { + nla_strlcpy(route->rt_iif, tb[RTA_IIF], IFNAMSIZ); + route->rt_mask |= ROUTE_ATTR_IIF; + } + + if (tb[RTA_OIF]) { + route->rt_oif = nla_get_u32(tb[RTA_OIF]); + route->rt_mask |= ROUTE_ATTR_OIF; + } + + if (tb[RTA_GATEWAY]) { + route->rt_gateway = nla_get_addr(tb[RTA_GATEWAY], + route->rt_family); + if (!route->rt_gateway) + goto errout_errno; + route->rt_mask |= ROUTE_ATTR_GATEWAY; + } + + if (tb[RTA_PRIORITY]) { + route->rt_prio = nla_get_u32(tb[RTA_PRIORITY]); + route->rt_mask |= ROUTE_ATTR_PRIO; + } + + if (tb[RTA_PREFSRC]) { + route->rt_pref_src = nla_get_addr(tb[RTA_PREFSRC], + route->rt_family); + if (!route->rt_pref_src) + goto errout_errno; + route->rt_mask |= ROUTE_ATTR_PREF_SRC; + } + + if (tb[RTA_METRICS]) { + struct nlattr *mtb[RTAX_MAX + 1]; + int i; + + err = nla_parse_nested(mtb, RTAX_MAX, tb[RTA_METRICS], NULL); + if (err < 0) + goto errout; + + for (i = 1; i <= RTAX_MAX; i++) { + if (mtb[i] && nla_len(mtb[i]) >= sizeof(uint32_t)) { + uint32_t m = nla_get_u32(mtb[i]); + route->rt_metrics[i-1] = m; + route->rt_metrics_mask |= (1 << (i - 1)); + } + } + + route->rt_mask |= ROUTE_ATTR_METRICS; + } + + if (tb[RTA_MULTIPATH]) { + struct rtnl_nexthop *nh; + struct rtnexthop *rtnh = nla_data(tb[RTA_MULTIPATH]); + size_t tlen = nla_len(tb[RTA_MULTIPATH]); + + while (tlen >= sizeof(*rtnh) && tlen >= rtnh->rtnh_len) { + nh = rtnl_route_nh_alloc(); + if (!nh) + goto errout; + + rtnl_route_nh_set_weight(nh, rtnh->rtnh_hops); + rtnl_route_nh_set_ifindex(nh, rtnh->rtnh_ifindex); + rtnl_route_nh_set_flags(nh, rtnh->rtnh_flags); + + if (rtnh->rtnh_len > sizeof(*rtnh)) { + struct nlattr *ntb[RTA_MAX + 1]; + nla_parse(ntb, RTA_MAX, (struct nlattr *) + RTNH_DATA(rtnh), + rtnh->rtnh_len - sizeof(*rtnh), + route_policy); + + if (ntb[RTA_GATEWAY]) { + nh->rtnh_gateway = nla_get_addr( + ntb[RTA_GATEWAY], + route->rt_family); + nh->rtnh_mask = NEXTHOP_HAS_GATEWAY; + } + } + + rtnl_route_add_nexthop(route, nh); + tlen -= RTNH_ALIGN(rtnh->rtnh_len); + rtnh = RTNH_NEXT(rtnh); + } + } + + if (tb[RTA_FLOW]) { + route->rt_realms = nla_get_u32(tb[RTA_FLOW]); + route->rt_mask |= ROUTE_ATTR_REALMS; + } + + if (tb[RTA_CACHEINFO]) + copy_cacheinfo_into_route(nla_data(tb[RTA_CACHEINFO]), route); + + if (tb[RTA_MP_ALGO]) { + route->rt_mp_algo = nla_get_u32(tb[RTA_MP_ALGO]); + route->rt_mask |= ROUTE_ATTR_MP_ALGO; + } + + err = pp->pp_cb((struct nl_object *) route, pp); + if (err < 0) + goto errout; + + return P_ACCEPT; + +errout_errno: + err = nl_get_errno(); +errout: + rtnl_route_put(route); + return err; + +} + +static int route_request_update(struct nl_cache *c, struct nl_handle *h) +{ + return nl_rtgen_request(h, RTM_GETROUTE, AF_UNSPEC, NLM_F_DUMP); +} + +static int route_dump_brief(struct nl_object *a, struct nl_dump_params *p) +{ + struct rtnl_route *r = (struct rtnl_route *) a; + struct nl_cache *link_cache; + char buf[64]; + + link_cache = nl_cache_mngt_require("route/link"); + + if (r->rt_mask & ROUTE_ATTR_DST) + dp_dump(p, "%s ", nl_addr2str(r->rt_dst, buf, sizeof(buf))); + else if (r->rt_dst_len) + dp_dump(p, "0/%u ", r->rt_dst_len); + else + dp_dump(p, "default "); + + if (r->rt_mask & ROUTE_ATTR_OIF) { + if (link_cache) + dp_dump(p, "dev %s ", + rtnl_link_i2name(link_cache, r->rt_oif, + buf, sizeof(buf))); + else + dp_dump(p, "dev %d ", r->rt_oif); + } + + if (r->rt_mask & ROUTE_ATTR_GATEWAY) + dp_dump(p, "via %s ", nl_addr2str(r->rt_gateway, buf, + sizeof(buf))); + else if (r->rt_mask & ROUTE_ATTR_MULTIPATH) + dp_dump(p, "via nexthops "); + + if (r->rt_mask & ROUTE_ATTR_TABLE) + dp_dump(p, "table %s ", + rtnl_route_table2str(r->rt_table, buf, sizeof(buf))); + + if (r->rt_mask & ROUTE_ATTR_SCOPE) + dp_dump(p, "scope %s ", + rtnl_scope2str(r->rt_scope, buf, sizeof(buf))); + + if (r->rt_mask & ROUTE_ATTR_FLAGS && r->rt_flags) { + int flags = r->rt_flags; + + dp_dump(p, "<"); + +#define PRINT_FLAG(f) if (flags & RTNH_F_##f) { \ + flags &= ~RTNH_F_##f; dp_dump(p, #f "%s", flags ? "," : ""); } + PRINT_FLAG(DEAD); + PRINT_FLAG(ONLINK); + PRINT_FLAG(PERVASIVE); +#undef PRINT_FLAG + +#define PRINT_FLAG(f) if (flags & RTM_F_##f) { \ + flags &= ~RTM_F_##f; dp_dump(p, #f "%s", flags ? "," : ""); } + PRINT_FLAG(NOTIFY); + PRINT_FLAG(CLONED); + PRINT_FLAG(EQUALIZE); + PRINT_FLAG(PREFIX); +#undef PRINT_FLAG + + dp_dump(p, ">"); + } + + dp_dump(p, "\n"); + + return 1; +} + +static int route_dump_full(struct nl_object *a, struct nl_dump_params *p) +{ + struct rtnl_route *r = (struct rtnl_route *) a; + struct nl_cache *link_cache; + char buf[128]; + int i, line; + + link_cache = nl_cache_mngt_require("route/link"); + line = route_dump_brief(a, p); + + if (r->rt_mask & ROUTE_ATTR_MULTIPATH) { + struct rtnl_nexthop *nh; + + dp_dump_line(p, line++, " "); + + nl_list_for_each_entry(nh, &r->rt_nexthops, rtnh_list) { + dp_dump(p, "nh "); + + if (nh->rtnh_mask & NEXTHOP_HAS_GATEWAY) + dp_dump(p, "via %s ", + nl_addr2str(nh->rtnh_gateway, + buf, sizeof(buf))); + if (link_cache) + dp_dump(p, "dev %s ", + rtnl_link_i2name(link_cache, + nh->rtnh_ifindex, + buf, sizeof(buf))); + else + dp_dump(p, "dev %d ", nh->rtnh_ifindex); + + dp_dump(p, "weight %u <%s> ", nh->rtnh_weight, + rtnl_route_nh_flags2str(nh->rtnh_flags, + buf, sizeof(buf))); + } + + dp_dump(p, "\n"); + } + + dp_dump_line(p, line++, " "); + + if (r->rt_mask & ROUTE_ATTR_PREF_SRC) + dp_dump(p, "preferred-src %s ", + nl_addr2str(r->rt_pref_src, buf, sizeof(buf))); + + if (r->rt_mask & ROUTE_ATTR_TYPE) + dp_dump(p, "type %s ", + nl_rtntype2str(r->rt_type, buf, sizeof(buf))); + + if (r->rt_mask & ROUTE_ATTR_PRIO) + dp_dump(p, "metric %#x ", r->rt_prio); + + if (r->rt_mask & ROUTE_ATTR_FAMILY) + dp_dump(p, "family %s ", + nl_af2str(r->rt_family, buf, sizeof(buf))); + + if (r->rt_mask & ROUTE_ATTR_PROTOCOL) + dp_dump(p, "protocol %s ", + rtnl_route_proto2str(r->rt_protocol, buf, sizeof(buf))); + + dp_dump(p, "\n"); + + if ((r->rt_mask & (ROUTE_ATTR_IIF | ROUTE_ATTR_SRC | ROUTE_ATTR_TOS | + ROUTE_ATTR_REALMS)) || r->rt_src_len || + ((r->rt_mask & ROUTE_ATTR_CACHEINFO) && + r->rt_cacheinfo.rtci_error)) { + dp_dump_line(p, line++, " "); + + if (r->rt_mask & ROUTE_ATTR_IIF) + dp_dump(p, "iif %s ", r->rt_iif); + + if (r->rt_mask & ROUTE_ATTR_SRC) + dp_dump(p, "src %s ", + nl_addr2str(r->rt_src, buf, sizeof(buf))); + else if (r->rt_src_len) + dp_dump(p, "src 0/%u ", r->rt_src_len); + + if (r->rt_mask & ROUTE_ATTR_TOS) + dp_dump(p, "tos %#x ", r->rt_tos); + + if (r->rt_mask & ROUTE_ATTR_REALMS) + dp_dump(p, "realm %04x:%04x ", + RTNL_REALM_FROM(r->rt_realms), + RTNL_REALM_TO(r->rt_realms)); + + if ((r->rt_mask & ROUTE_ATTR_CACHEINFO) && + r->rt_cacheinfo.rtci_error) + dp_dump(p, "error %d (%s) ", r->rt_cacheinfo.rtci_error, + strerror(-r->rt_cacheinfo.rtci_error)); + + dp_dump(p, "\n"); + } + + if (r->rt_mask & ROUTE_ATTR_METRICS) { + dp_dump_line(p, line++, " "); + for (i = 0; i < RTAX_MAX; i++) + if (r->rt_metrics_mask & (1 << i)) + dp_dump(p, "%s %u ", + rtnl_route_metric2str(i+1, + buf, sizeof(buf)), + r->rt_metrics[i]); + dp_dump(p, "\n"); + } + + return line; +} + +static int route_dump_stats(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_route *route = (struct rtnl_route *) obj; + int line; + + line = route_dump_full(obj, p); + + if (route->rt_mask & ROUTE_ATTR_CACHEINFO) { + struct rtnl_rtcacheinfo *ci = &route->rt_cacheinfo; + dp_dump_line(p, line++, " used %u refcnt %u ", + ci->rtci_used, ci->rtci_clntref); + dp_dump_line(p, line++, "last-use %us expires %us\n", + ci->rtci_last_use / nl_get_hz(), + ci->rtci_expires / nl_get_hz()); + } + + return line; +} + +static int route_dump_xml(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_route *route = (struct rtnl_route *) obj; + char buf[128]; + int line = 0; + + dp_dump_line(p, line++, "\n"); + dp_dump_line(p, line++, " %s\n", + nl_af2str(route->rt_family, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_DST) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(route->rt_dst, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_DST_LEN) + dp_dump_line(p, line++, " %u\n", + route->rt_dst_len); + + if (route->rt_mask & ROUTE_ATTR_SRC) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(route->rt_src, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_SRC_LEN) + dp_dump_line(p, line++, " %u\n", + route->rt_src_len); + + if (route->rt_mask & ROUTE_ATTR_GATEWAY) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(route->rt_gateway, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_PREF_SRC) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(route->rt_pref_src, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_IIF) + dp_dump_line(p, line++, " %s\n", route->rt_iif); + + if (route->rt_mask & ROUTE_ATTR_REALMS) + dp_dump_line(p, line++, " %u\n", + route->rt_realms); + + if (route->rt_mask & ROUTE_ATTR_TOS) + dp_dump_line(p, line++, " %u\n", route->rt_tos); + + if (route->rt_mask & ROUTE_ATTR_TABLE) + dp_dump_line(p, line++, " %u
\n", + route->rt_table); + + if (route->rt_mask & ROUTE_ATTR_SCOPE) + dp_dump_line(p, line++, " %s\n", + rtnl_scope2str(route->rt_scope, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_PRIO) + dp_dump_line(p, line++, " %u\n", + route->rt_prio); + + if (route->rt_mask & ROUTE_ATTR_OIF) { + struct nl_cache *link_cache; + + link_cache = nl_cache_mngt_require("route/link"); + if (link_cache) + dp_dump_line(p, line++, " %s\n", + rtnl_link_i2name(link_cache, + route->rt_oif, + buf, sizeof(buf))); + else + dp_dump_line(p, line++, " %u\n", + route->rt_oif); + } + + if (route->rt_mask & ROUTE_ATTR_TYPE) + dp_dump_line(p, line++, " %s\n", + nl_rtntype2str(route->rt_type, buf, sizeof(buf))); + + dp_dump_line(p, line++, "\n"); + +#if 0 + uint8_t rt_protocol; + uint32_t rt_flags; + uint32_t rt_metrics[RTAX_MAX]; + uint32_t rt_metrics_mask; + struct rtnl_nexthop * rt_nexthops; + struct rtnl_rtcacheinfo rt_cacheinfo; + uint32_t rt_mp_algo; + +#endif + + return line; +} + +static int route_dump_env(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_route *route = (struct rtnl_route *) obj; + char buf[128]; + int line = 0; + + dp_dump_line(p, line++, "ROUTE_FAMILY=%s\n", + nl_af2str(route->rt_family, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_DST) + dp_dump_line(p, line++, "ROUTE_DST=%s\n", + nl_addr2str(route->rt_dst, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_DST_LEN) + dp_dump_line(p, line++, "ROUTE_DSTLEN=%u\n", + route->rt_dst_len); + + if (route->rt_mask & ROUTE_ATTR_SRC) + dp_dump_line(p, line++, "ROUTE_SRC=%s\n", + nl_addr2str(route->rt_src, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_SRC_LEN) + dp_dump_line(p, line++, "ROUTE_SRCLEN=%u\n", + route->rt_src_len); + + if (route->rt_mask & ROUTE_ATTR_GATEWAY) + dp_dump_line(p, line++, "ROUTE_GATEWAY=%s\n", + nl_addr2str(route->rt_gateway, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_PREF_SRC) + dp_dump_line(p, line++, "ROUTE_PREFSRC=%s\n", + nl_addr2str(route->rt_pref_src, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_IIF) + dp_dump_line(p, line++, "ROUTE_IIF=%s\n", route->rt_iif); + + if (route->rt_mask & ROUTE_ATTR_REALMS) + dp_dump_line(p, line++, "ROUTE_REALM=%u\n", + route->rt_realms); + + if (route->rt_mask & ROUTE_ATTR_TOS) + dp_dump_line(p, line++, "ROUTE_TOS=%u\n", route->rt_tos); + + if (route->rt_mask & ROUTE_ATTR_TABLE) + dp_dump_line(p, line++, "ROUTE_TABLE=%u\n", + route->rt_table); + + if (route->rt_mask & ROUTE_ATTR_SCOPE) + dp_dump_line(p, line++, "ROUTE_SCOPE=%s\n", + rtnl_scope2str(route->rt_scope, buf, sizeof(buf))); + + if (route->rt_mask & ROUTE_ATTR_PRIO) + dp_dump_line(p, line++, "ROUTE_METRIC=%u\n", + route->rt_prio); + + if (route->rt_mask & ROUTE_ATTR_OIF) { + struct nl_cache *link_cache; + + dp_dump_line(p, line++, "ROUTE_OIF_IFINDEX=%u\n", + route->rt_oif); + + link_cache = nl_cache_mngt_require("route/link"); + if (link_cache) + dp_dump_line(p, line++, "ROUTE_OIF_IFNAME=%s\n", + rtnl_link_i2name(link_cache, + route->rt_oif, + buf, sizeof(buf))); + } + + if (route->rt_mask & ROUTE_ATTR_TYPE) + dp_dump_line(p, line++, "ROUTE_TYPE=%s\n", + nl_rtntype2str(route->rt_type, buf, sizeof(buf))); + + return line; +} + +static int route_filter(struct nl_object *obj, struct nl_object *filter) +{ + struct rtnl_route *o = (struct rtnl_route *) obj; + struct rtnl_route *f = (struct rtnl_route *) filter; + +#define REQ(F) (f->rt_mask & ROUTE_ATTR_##F) +#define AVAIL(F) (o->rt_mask & ROUTE_ATTR_##F) +#define _O(F, EXPR) (REQ(F) && (!AVAIL(F) || (EXPR))) +#define _C(F, N) (REQ(F) && (!AVAIL(F) || (o->N != f->N))) + if (_C(FAMILY, rt_family) || + _C(DST_LEN, rt_dst_len) || + _C(SRC_LEN, rt_src_len) || + _C(TOS, rt_tos) || + _C(TABLE, rt_table) || + _C(PROTOCOL, rt_protocol) || + _C(SCOPE, rt_scope) || + _C(TYPE, rt_type) || + _C(OIF, rt_oif) || + _C(PRIO, rt_prio) || + _C(REALMS, rt_realms) || + _C(MP_ALGO, rt_mp_algo) || + _O(DST, nl_addr_cmp(o->rt_dst, f->rt_dst)) || + _O(SRC, nl_addr_cmp(o->rt_src, f->rt_src)) || + _O(IIF, strcmp(o->rt_iif, f->rt_iif)) || + _O(PREF_SRC, nl_addr_cmp(o->rt_pref_src, f->rt_pref_src)) || + _O(GATEWAY, nl_addr_cmp(o->rt_gateway, f->rt_gateway)) || + _O(FLAGS, f->rt_flags ^ (o->rt_flags & f->rt_flag_mask))) + return 0; + + if (REQ(METRICS)) { + int i; + + if (!AVAIL(METRICS)) + return 0; + + for (i = 0; i < RTAX_MAX; i++) { + if (f->rt_metrics_mask & (1 << i)) { + if (!(o->rt_metrics_mask & (1 << i)) || + f->rt_metrics[i+1] != o->rt_metrics[i+1]) + return 0; + } + } + } + + if (REQ(MULTIPATH)) { + /* FIXME */ + } + +#undef REQ +#undef AVAIL +#undef _O +#undef _C + + return 1; + +} + +/** + * @name Route Object Allocation/Freeage + * @{ + */ + +/** + * Allocate a new route object + * @return New route object + */ +struct rtnl_route *rtnl_route_alloc(void) +{ + return (struct rtnl_route *) nl_object_alloc_from_ops(&rtnl_route_ops); +} + +/** + * Free route object. + * @arg route Route object to be freed. + * + * @note Always use rtnl_route_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void rtnl_route_free(struct rtnl_route *route) +{ + nl_object_free((struct nl_object *) route); +} + +/** @} */ + +/** + * @name Route Object Reference Counting + * @{ + */ + +void rtnl_route_get(struct rtnl_route *route) +{ + nl_object_get((struct nl_object *) route); +} + +void rtnl_route_put(struct rtnl_route *route) +{ + nl_object_put((struct nl_object *) route); +} + +/** @} */ + +/** + * @name Route Cache Management + * @{ + */ + +/** + * Build a route cache holding all routes currently configured in the kernel + * @arg handle netlink handle + * + * Allocates a new cache, initializes it properly and updates it to + * contain all routes currently configured in the kernel. + * + * @note The caller is responsible for destroying and freeing the + * cache after using it. + * @return The cache or NULL if an error has occured. + */ +struct nl_cache *rtnl_route_alloc_cache(struct nl_handle *handle) +{ + struct nl_cache *cache = nl_cache_alloc_from_ops(&rtnl_route_ops); + + if (!cache) + return NULL; + + if (nl_cache_update(handle, cache) < 0) { + free(cache); + return NULL; + } + + return cache; +} + +/** @} */ + +/** + * @name Route Addition + * @{ + */ + +static struct nl_msg *build_route_msg(struct rtnl_route *tmpl, int cmd, + int flags) +{ +#if 0 + struct nl_msg *msg; + struct rtmsg rtmsg = { + .rtm_family = tmpl->rt_family, + }; + route->rt_dst_len = rtmsg->rtm_dst_len; + route->rt_src_len = rtmsg->rtm_src_len; + route->rt_tos = rtmsg->rtm_tos; + route->rt_table = rtmsg->rtm_table; + route->rt_type = rtmsg->rtm_type; + route->rt_scope = rtmsg->rtm_scope; + route->rt_protocol = rtmsg->rtm_protocol; + route->rt_flags = rtmsg->rtm_flags; + + route->rt_mask = (ROUTE_ATTR_FAMILY | ROUTE_ATTR_DST_LEN | + ROUTE_ATTR_SRC_LEN | ROUTE_ATTR_TABLE | + ROUTE_ATTR_PROTOCOL| ROUTE_ATTR_SCOPE | + ROUTE_ATTR_TYPE | ROUTE_ATTR_FLAGS); + + msg = nlmsg_build_simple(cmd, flags); + if (!msg) + return NULL; + + if (nlmsg_append(msg, &rtmsg, sizeof(rtmsg), 1) < 0) + goto nla_put_failure; + + NLA_PUT_ADDR(msg, NDA_DST, tmpl->n_dst); + + if (tmpl->n_mask & NEIGH_ATTR_LLADDR) + NLA_PUT_ADDR(msg, NDA_LLADDR, tmpl->n_lladdr); + + return msg; + +nla_put_failure: + nlmsg_free(msg); + return NULL; +#endif + + return NULL; +} + +/** + * Build netlink request message to add a new route + * @arg tmpl template with data of new route + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a addition of a new route. + * The netlink message header isn't fully equipped with all relevant + * fields and must thus be sent out via nl_send_auto_complete() or + * supplemented as needed. \a tmpl must contain the attributes of the + * new route set via \c rtnl_route_set_* functions. + * + * The following attributes must be set in the template: + * - Interface index (rtnl_neigh_set_ifindex()) + * - State (rtnl_neigh_set_state()) + * - Destination address (rtnl_neigh_set_dst()) + * - Link layer address (rtnl_neigh_set_lladdr()) + * + * @return The netlink message + */ +struct nl_msg *rtnl_route_build_add_request(struct rtnl_route *tmpl, int flags) +{ + return build_route_msg(tmpl, RTM_NEWROUTE, NLM_F_CREATE | flags); +} + +/** @} */ +/** + * @name Attribute: Routing Table + * @{ + */ + +/** + * Set the table of a route to the specified value + * @arg route route to be changed + * @arg table new table value + */ +void rtnl_route_set_table(struct rtnl_route *route, int table) +{ + route->rt_table = table; + route->rt_mask |= ROUTE_ATTR_TABLE; +} + +/** + * Get the table of a route + * @arg route route handle + * @return Table id or -1 if not set + */ +int rtnl_route_get_table(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_TABLE) + return route->rt_table; + else + return -1; +} + +/** @} */ +/** + * @name Attribute: Scope + * @{ + */ + +/** + * Set the scope of a route to the specified value + * @arg route route to be changed + * @arg scope new scope + */ +void rtnl_route_set_scope(struct rtnl_route *route, int scope) +{ + route->rt_scope = scope; + route->rt_mask |= ROUTE_ATTR_SCOPE; +} + +/** + * Get the scope of a route + * @arg route route handle + * @return Scope or -1 if not set + */ +int rtnl_route_get_scope(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_SCOPE) + return route->rt_scope; + else + return -1; +} + +/** @} */ +/** + * @name Attribute: Type Of Service + * @{ + */ + +/** + * Set the TOS of a route to the specified value + * @arg route route to be changed + * @arg tos new TOS value + */ +void rtnl_route_set_tos(struct rtnl_route *route, int tos) +{ + route->rt_tos = tos; + route->rt_mask |= ROUTE_ATTR_TOS; +} + +/** + * Get the TOS of a route + * @arg route route handle + * @return TOS value or -1 if not set + */ +int rtnl_route_get_tos(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_TOS) + return route->rt_tos; + else + return -1; +} + +/** @} */ +/** + * @name Attribute: Realm + * @{ + */ + +/** + * Set the realms of a route to the specified value + * @arg route route to be changed + * @arg realms New realms value. + */ +void rtnl_route_set_realms(struct rtnl_route *route, realm_t realms) +{ + route->rt_realms = realms; + route->rt_mask |= ROUTE_ATTR_REALMS; +} + +/** + * Get realms of route object. + * @arg route Route object. + * @return Realms value or 0 if not set. + */ +realm_t rtnl_route_get_realms(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_REALMS) + return route->rt_realms; + else + return 0; +} + +/** @} */ +/** + * @name Attribute: Routing Protocol + * @{ + */ + +/** + * Set the protocol of a route to the specified value + * @arg route route to be changed + * @arg proto new protocol + */ +void rtnl_route_set_protocol(struct rtnl_route *route, int proto) +{ + route->rt_protocol = proto; + route->rt_mask |= ROUTE_ATTR_PROTOCOL; +} + +/** + * Get the protocol of a route + * @arg route route handle + * @return Protocol number or -1 if not set + */ +int rtnl_route_get_protocol(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_PROTOCOL) + return route->rt_protocol; + else + return -1; +} + +/** @} */ +/** + * @name Attribute: Priority/Metric + * @{ + */ + +/** + * Set the priority of a route to the specified value + * @arg route route to be changed + * @arg prio new priority + */ +void rtnl_route_set_prio(struct rtnl_route *route, int prio) +{ + route->rt_prio = prio; + route->rt_mask |= ROUTE_ATTR_PRIO; +} + +/** + * Get the priority of a route + * @arg route route handle + * @return Priority or -1 if not set + */ +int rtnl_route_get_prio(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_PRIO) + return route->rt_prio; + else + return -1; +} + +/** @} */ +/** + * @name Attribute: Address Family + * @{ + */ + +/** + * Set the address family of a route to the specified value + * @arg route route to be changed + * @arg family new address family + */ +void rtnl_route_set_family(struct rtnl_route *route, int family) +{ + route->rt_family = family; + route->rt_mask |= ROUTE_ATTR_FAMILY; +} + +/** + * Get the address family of a route + * @arg route route handle + * @return Address family or AF_UNSPEC if not set + */ +int rtnl_route_get_family(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_FAMILY) + return route->rt_family; + else + return AF_UNSPEC; +} + +/** @} */ +/** + * @name Attribute: Destination Address + * @{ + */ + +/** + * Set the destination address of a route to the specified address + * @arg route route to be changed + * @arg addr new destination address + * + * Assigns the new destination address to the specified \a route, + * overwrites the destination address length (rtnl_route::rt_dst_len), + * and sets the route's address family to the new address's family if + * it is not set already. + * + * If a address family has been specified already via either calling + * rtnl_route_set_family() or by setting one of the other addresses, + * the specified \a addr is automatically validated against this family + * and the assignment fails in case of a mismatch. + * + * @return 0 on success or a negative error code. + */ +int rtnl_route_set_dst(struct rtnl_route *route, struct nl_addr *addr) +{ + if (route->rt_mask & ROUTE_ATTR_FAMILY) { + if (addr->a_family != route->rt_family) + return nl_error(EINVAL, "Address family mismatch"); + } else + route->rt_family = addr->a_family; + + if (route->rt_dst) + nl_addr_put(route->rt_dst); + + nl_addr_get(addr); + route->rt_dst = addr; + + route->rt_mask |= (ROUTE_ATTR_DST|ROUTE_ATTR_FAMILY|ROUTE_ATTR_DST_LEN); + + return 0; +} + +/** + * Get the destination address of a route + * @arg route route handle + * @return Destination address or NULL if not set + */ +struct nl_addr *rtnl_route_get_dst(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_DST) + return route->rt_dst; + else + return NULL; +} + +/** + * Set the destination address prefix length of a route to the specified value + * @arg route route to be changed + * @arg prefix new destination address prefix + * @attention The destination address prefix gets overwritten by calls + * to rtnl_route_set_dst() rtnl_route_set_dst_str(). + */ +void rtnl_route_set_dst_len(struct rtnl_route *route, int prefix) +{ + route->rt_dst_len = prefix; + route->rt_mask |= ROUTE_ATTR_DST_LEN; +} + +/** + * Get the destination address prefix length of a route + * @arg route route handle + * @return Prefix length or -1 if not set + */ +int rtnl_route_get_dst_len(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_DST_LEN) + return route->rt_dst_len; + else + return -1; +} + +/** @} */ +/** + * @name Attribute: Source Address + * @{ + */ + +/** + * Set the source address of a route to the specified address + * @arg route route to be changed + * @arg addr new source address + * + * Assigns the new source address to the specified \a route, + * overwrites the source address length (rtnl_route::rt_src_len), + * and sets the route's address family to the new address's family if + * it is not set already. + * + * If a address family has been specified already via either calling + * rtnl_route_set_family() or by setting one of the other addresses, + * the specified \a addr is automatically validated against this family + * and the assignment fails in case of a mismatch. + * + * @return 0 on success or a negative error code. + */ +int rtnl_route_set_src(struct rtnl_route *route, struct nl_addr *addr) +{ + if (route->rt_mask & ROUTE_ATTR_FAMILY) { + if (addr->a_family != route->rt_family) + return nl_error(EINVAL, "Address family mismatch"); + } else + route->rt_family = addr->a_family; + + if (route->rt_src) + nl_addr_put(route->rt_src); + + nl_addr_get(addr); + route->rt_src = addr; + route->rt_mask |= (ROUTE_ATTR_SRC|ROUTE_ATTR_FAMILY|ROUTE_ATTR_SRC_LEN); + + return 0; +} + +/** + * Get the source address of a route + * @arg route route handle + * @return Source address or NULL if not set + */ +struct nl_addr *rtnl_route_get_src(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_SRC) + return route->rt_src; + else + return NULL; +} + +/** + * Set the source address prefix length of a route to the specified value + * @arg route route to be changed + * @arg prefix new source address prefix + * @attention The source address prefix gets overwritten by calls + * to rtnl_route_src_dst() rtnl_route_set_src_str(). + */ +void rtnl_route_set_src_len(struct rtnl_route *route, int prefix) +{ + route->rt_dst_len = prefix; + route->rt_mask |= ROUTE_ATTR_SRC_LEN; +} + +/** + * Get the source address prefix length of a route + * @arg route route handle + * @return Prefix length or -1 if not set + */ +int rtnl_route_get_src_len(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_SRC_LEN) + return route->rt_src_len; + else + return -1; +} + +/** @} */ +/** + * @name Attribute: Gateway Address + * @{ + */ + +/** + * Set the gateway address of a route to the specified address + * @arg route route to be changed + * @arg addr new gateway address + * + * Assigns the new gateway address to the specified \a route, + * and sets the route's address family to the new address's family if + * it is not set already. + * + * If a address family has been specified already via either calling + * rtnl_route_set_family() or by setting one of the other addresses, + * the specified \a addr is automatically validated against this family + * and the assignment fails in case of a mismatch. + * + * @return 0 on success or a negative error code. + */ +int rtnl_route_set_gateway(struct rtnl_route *route, struct nl_addr *addr) +{ + if (route->rt_mask & ROUTE_ATTR_FAMILY) { + if (addr->a_family != route->rt_family) + return nl_error(EINVAL, "Address family mismatch"); + } else + route->rt_family = addr->a_family; + + if (route->rt_gateway) + nl_addr_put(route->rt_gateway); + + nl_addr_get(addr); + route->rt_gateway = addr; + route->rt_mask |= (ROUTE_ATTR_GATEWAY | ROUTE_ATTR_FAMILY); + + return 0; +} + +/** + * Get the gateway address of a route + * @arg route route handle + * @return Gateway address or NULL if not set + */ +struct nl_addr *rtnl_route_get_gateway(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_GATEWAY) + return route->rt_gateway; + else + return NULL; +} + +/** @} */ +/** + * @name Attribute: Type + * @{ + */ + +/** + * Set the type of a route to the specified value + * @arg route route to be changed + * @arg type new route type + */ +void rtnl_route_set_type(struct rtnl_route *route, int type) +{ + route->rt_type = type; + route->rt_mask |= ROUTE_ATTR_TYPE; +} + +/** + * Get the type of a route + * @arg route route handle + * @return Type of route or -1 if not set + */ +int rtnl_route_get_type(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_TYPE) + return route->rt_type; + else + return -1; +} + +/** @} */ +/** + * @name Attribute: Flags + * @{ + */ + +/** + * Add flags to a route + * @arg route route to be changed + * @arg flags flags to set + */ +void rtnl_route_set_flags(struct rtnl_route *route, unsigned int flags) +{ + route->rt_flag_mask |= flags; + route->rt_flags |= flags; + route->rt_mask |= ROUTE_ATTR_FLAGS; +} + +/** + * Remove flags from a route + * @arg route route to be changed + * @arg flags flags to unset + */ +void rtnl_route_unset_flags(struct rtnl_route *route, unsigned int flags) +{ + route->rt_flag_mask |= flags; + route->rt_flags &= ~flags; + route->rt_mask |= ROUTE_ATTR_FLAGS; +} + +/** + * Get flags of a route + * @arg route route handle + */ +unsigned int rtnl_route_get_flags(struct rtnl_route *route) +{ + return route->rt_flags; +} + +/** @} */ +/** + * @name Attribute: Routing Metrics + * @{ + */ + +/** + * Set a metric of a route to the specified value + * @arg route route to be changed + * @arg metric metric to be changed (see XXX) + * @arg value new metric value + * @return 0 on sucess or a negative error code + */ +int rtnl_route_set_metric(struct rtnl_route *route, int metric, uint32_t value) +{ + if (metric <= RTAX_MAX || metric < 1) + return nl_error(EINVAL, "Metric out of range (1..%d)", + RTAX_MAX); + + route->rt_metrics[metric - 1] = value; + route->rt_metrics_mask |= (1 << (metric - 1)); + + return 0; +} + +/** + * Unset a metric of a route + * @arg route route to be changed + * @arg metric metric to be unset (see XXX) + * @return 0 on sucess or a negative error code + */ +int rtnl_route_unset_metric(struct rtnl_route *route, int metric) +{ + if (metric <= RTAX_MAX || metric < 1) + return nl_error(EINVAL, "Metric out of range (1..%d)", + RTAX_MAX); + + route->rt_metrics_mask &= ~(1 << (metric - 1)); + + return 0; +} + +/** + * Get a metric for a route + * @arg route route handle + * @arg metric metric to get + * @return The value for the specified metric or UINT_MAX if not set + */ +unsigned int rtnl_route_get_metric(struct rtnl_route *route, int metric) +{ + if (metric <= RTAX_MAX || metric < 1) + return UINT_MAX; + + if (!(route->rt_metrics_mask & (1 << (metric - 1)))) + return UINT_MAX; + + return route->rt_metrics[metric - 1]; +} + +/** @} */ +/** + * @name Attribute: Preferred Source Address + * @{ + */ + +/** + * Set the preferred source address of a route to the specified address + * @arg route route to be changed + * @arg addr new preferred source address + * + * Assigns the new preferred source address to the specified \a route, + * and sets the route's address family to the new address's family if + * it is not set already. + * + * If a address family has been specified already via either calling + * rtnl_route_set_family() or by setting one of the other addresses, + * the specified \a addr is automatically validated against this family + * and the assignment fails in case of a mismatch. + * + * @return 0 on success or a negative error code. + */ +int rtnl_route_set_pref_src(struct rtnl_route *route, struct nl_addr *addr) +{ + if (route->rt_mask & ROUTE_ATTR_FAMILY) { + if (addr->a_family != route->rt_family) + return nl_error(EINVAL, "Address family mismatch"); + } else + route->rt_family = addr->a_family; + + if (route->rt_pref_src) + nl_addr_put(route->rt_pref_src); + + nl_addr_get(addr); + route->rt_pref_src = addr; + route->rt_mask |= (ROUTE_ATTR_PREF_SRC | ROUTE_ATTR_FAMILY); + + return 0; +} + +/** + * Get the preferred source address of a route + * @arg route route handle + * @return Preferred source address or NULL if not set + */ +struct nl_addr *rtnl_route_get_pref_src(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_PREF_SRC) + return route->rt_pref_src; + else + return NULL; +} + +/** @} */ +/** + * @name Attribute: Outgoing Interface Index + * @{ + */ + +/** + * Set the outgoing interface of a route to the specified value + * @arg route route to be changed + * @arg ifindex interface index of new outoing interface + */ +void rtnl_route_set_oif(struct rtnl_route *route, int ifindex) +{ + route->rt_oif = ifindex; + route->rt_mask |= ROUTE_ATTR_OIF; +} + +/** + * Get the outgoing interface index of a route + * @arg route route handle + * @return interface index or RTNL_LINK_NOT_FOUND if not set + */ +int rtnl_route_get_oif(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_OIF) + return route->rt_oif; + else + return RTNL_LINK_NOT_FOUND; +} + +/** @} */ +/** + * @name Attribute: Incoming Interface + * @{ + */ + +/** + * Set the incoming interface of a route to the specified value + * @arg route route to be changed + * @arg name interface name of the new incoming interface + */ +void rtnl_route_set_iif(struct rtnl_route *route, const char *name) +{ + strncpy(route->rt_iif, name, sizeof(route->rt_iif) - 1); + route->rt_mask |= ROUTE_ATTR_IIF; +} + +/** + * Get the incomming interface name of a route + * @arg route route handle + * @return interface name or NULL if not set + */ +char *rtnl_route_get_iif(struct rtnl_route *route) +{ + if (route->rt_mask & ROUTE_ATTR_IIF) + return route->rt_iif; + else + return NULL; +} + +#if 0 + struct rtnl_rtcacheinfo rt_cacheinfo; +#endif + +/** @} */ +/** + * @name Attribute: Nexthop + * @{ + */ + +void rtnl_route_add_nexthop(struct rtnl_route *route, struct rtnl_nexthop *nh) +{ + nl_list_add_tail(&nh->rtnh_list, &route->rt_nexthops); + route->rt_mask |= ROUTE_ATTR_MULTIPATH; +} + +void rtnl_route_remove_nexthop(struct rtnl_nexthop *nh) +{ + nl_list_del(&nh->rtnh_list); +} + +struct nl_list_head *rtnl_route_get_nexthops(struct rtnl_route *route) +{ + return &route->rt_nexthops; +} + +/** @} */ + +/** + * @name Routing Table Identifier Translations + * @{ + */ + +static struct trans_tbl route_tables[] = { + __ADD(RT_TABLE_UNSPEC, unspec) + __ADD(RT_TABLE_DEFAULT, default) + __ADD(RT_TABLE_MAIN, main) + __ADD(RT_TABLE_LOCAL, local) +}; + +/** + * Convert routing table identifier to character string. + * @arg table Routing table identifier. + * @arg buf Destination buffer + * @arg size Size of destination buffer. + * + * Converts a routing table identifier to a character string and stores + * it in the specified destination buffer. + * + * @return The destination buffer or the type encoded in hexidecimal + * form if the routing table identifier is unknown. + */ +char *rtnl_route_table2str(int table, char *buf, size_t size) +{ + return __type2str(table, buf, size, route_tables, + ARRAY_SIZE(route_tables)); +} + +/** + * Convert character string to routing table identifier. + * @arg name Name of routing table. + * + * Converts the provided character string specifying a routing table + * identifier to the corresponding numeric value. + * + * @return Routing table identifier or a negative value if no match was found. + */ +int rtnl_route_str2table(const char *name) +{ + return __str2type(name, route_tables, ARRAY_SIZE(route_tables)); +} + + +/** @} */ + +/** + * @name Routing Protocol Translations + * @{ + */ + +static struct trans_tbl route_protos[] = { + __ADD(RTPROT_UNSPEC, unspec) + __ADD(RTPROT_REDIRECT, redirect) + __ADD(RTPROT_KERNEL, kernel) + __ADD(RTPROT_BOOT, boot) + __ADD(RTPROT_STATIC, static) +}; + +/** + * Convert routing protocol identifier to character string. + * @arg proto Routing protocol identifier. + * @arg buf Destination buffer + * @arg size Size of destination buffer. + * + * Converts a routing protocol identifier to a character string and stores + * it in the specified destination buffer. + * + * @return The destination buffer or the protocol encoded in hexidecimal + * form if the routing protocol is unknown. + */ +char *rtnl_route_proto2str(int proto, char *buf, size_t size) +{ + return __type2str(proto, buf, size, route_protos, + ARRAY_SIZE(route_protos)); +} + +/** + * Convert character string to routing protocol identifier. + * @arg name Name of routing protocol. + * + * Converts the provided character string specifying a routing protocl + * identifier to the corresponding numeric value. + * + * @return Routing protocol dentifier or a negative value if no match was found. + */ +int rtnl_route_str2proto(const char *name) +{ + return __str2type(name, route_protos, ARRAY_SIZE(route_protos)); +} + +/** @} */ + +/** + * @name Routing Metrices Translations + * @{ + */ + +static struct trans_tbl route_metrices[] = { + __ADD(RTAX_UNSPEC, unspec) + __ADD(RTAX_LOCK, lock) + __ADD(RTAX_MTU, mtu) + __ADD(RTAX_WINDOW, window) + __ADD(RTAX_RTT, rtt) + __ADD(RTAX_RTTVAR, rttvar) + __ADD(RTAX_SSTHRESH, ssthresh) + __ADD(RTAX_CWND, cwnd) + __ADD(RTAX_ADVMSS, advmss) + __ADD(RTAX_REORDERING, reordering) + __ADD(RTAX_HOPLIMIT, hoplimit) + __ADD(RTAX_INITCWND, initcwnd) + __ADD(RTAX_FEATURES, features) +}; + +/** + * Convert routing metric identifier to character string. + * @arg metric Routing metric identifier. + * @arg buf Destination buffer + * @arg size Size of destination buffer. + * + * Converts a routing metric identifier to a character string and stores + * it in the specified destination buffer. + * + * @return The destination buffer or the metric encoded in hexidecimal + * form if the routing metric identifier is unknown. + */ +char *rtnl_route_metric2str(int metric, char *buf, size_t size) +{ + return __type2str(metric, buf, size, route_metrices, + ARRAY_SIZE(route_metrices)); +} + +/** + * Convert character string to routing metric identifier. + * @arg name Name of routing metric. + * + * Converts the provided character string specifying a routing metric + * identifier to the corresponding numeric value. + * + * @return Routing metric dentifier or a negative value if no match was found. + */ +int rtnl_route_str2metric(const char *name) +{ + return __str2type(name, route_metrices, ARRAY_SIZE(route_metrices)); +} + +/** @} */ + +/** + * @name Nexthop Flags Translations + * @{ + */ + +static struct trans_tbl nh_flags[] = { + __ADD(RTNH_F_DEAD, dead) + __ADD(RTNH_F_PERVASIVE, pervasive) + __ADD(RTNH_F_ONLINK, onlink) +}; + +/** + * Convert nexthop flags to a character string. + * @arg flags Nexthop flags. + * @arg buf Destination buffer. + * @arg len Length of destination buffer. + * + * Converts nexthop flags to a character string separated by + * commas and stores it in the specified destination buffer. + * + * \return The destination buffer + */ +char * rtnl_route_nh_flags2str(int flags, char *buf, size_t len) +{ + return __flags2str(flags, buf, len, nh_flags, ARRAY_SIZE(nh_flags)); +} + +/** + * Convert a character string to a nexthop flag + * @arg name Name of nexthop flag. + * + * Converts the provided character string specifying a nexthop + * flag to the corresponding numeric value. + * + * \return Nexthop flag or a negative value if none was found. + */ +int rtnl_route_nh_str2flags(const char *name) +{ + return __str2flags(name, nh_flags, ARRAY_SIZE(nh_flags)); +} + +/** @} */ + +static struct nl_cache_ops rtnl_route_ops = { + .co_name = "route/route", + .co_size = sizeof(struct rtnl_route), + .co_hdrsize = sizeof(struct rtmsg), + .co_msgtypes = { + { RTM_NEWROUTE, "new" }, + { RTM_DELROUTE, "delete" }, + { RTM_GETROUTE, "get" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_ROUTE, + .co_request_update = route_request_update, + .co_msg_parser = route_msg_parser, + .co_constructor = route_constructor, + .co_free_data = route_free_data, + .co_dump[NL_DUMP_BRIEF] = route_dump_brief, + .co_dump[NL_DUMP_FULL] = route_dump_full, + .co_dump[NL_DUMP_STATS] = route_dump_stats, + .co_dump[NL_DUMP_XML] = route_dump_xml, + .co_dump[NL_DUMP_ENV] = route_dump_env, + .co_filter = route_filter, +}; + +static void __init route_init(void) +{ + nl_cache_mngt_register(&rtnl_route_ops); +} + +static void __exit route_exit(void) +{ + nl_cache_mngt_unregister(&rtnl_route_ops); +} + +/** @} */ diff --git a/lib/route/rtnl.c b/lib/route/rtnl.c new file mode 100644 index 0000000..4fd2660 --- /dev/null +++ b/lib/route/rtnl.c @@ -0,0 +1,168 @@ +/* + * lib/route/rtnl.c Routing Netlink + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @defgroup rtnl Routing Netlink + * @{ + */ + +#include +#include +#include +#include + +/** + * @name Sending + * @{ + */ + +/** + * Send routing netlink request message + * @arg handle Netlink handle. + * @arg type Netlink message type. + * @arg family Address family. + * @arg flags Additional netlink message flags. + * + * Fills out a routing netlink request message and sends it out + * using nl_send_simple(). + * + * @return 0 on success or a negative error code. + */ +int nl_rtgen_request(struct nl_handle *handle, int type, int family, int flags) +{ + struct rtgenmsg gmsg = { + .rtgen_family = family, + }; + + return nl_send_simple(handle, type, flags, &gmsg, sizeof(gmsg)); +} + +/** @} */ + +/** + * @name Routing Type Translations + * @{ + */ + +static struct trans_tbl rtntypes[] = { + __ADD(RTN_UNSPEC,unspec) + __ADD(RTN_UNICAST,unicast) + __ADD(RTN_LOCAL,local) + __ADD(RTN_BROADCAST,broadcast) + __ADD(RTN_ANYCAST,anycast) + __ADD(RTN_MULTICAST,multicast) + __ADD(RTN_BLACKHOLE,blackhole) + __ADD(RTN_UNREACHABLE,unreachable) + __ADD(RTN_PROHIBIT,prohibit) + __ADD(RTN_THROW,throw) + __ADD(RTN_NAT,nat) + __ADD(RTN_XRESOLVE,xresolve) +}; + +/** + * Convert routing type to character string. + * @arg type Routing type. + * @arg buf Destination buffer. + * @arg size Size of destination buffer. + * + * Converts a routing type to a character string and stores it in + * the specified destination buffer. + * + * @return The destination buffer or the type encoded in hexidecimal + * form if the routing type is unknown. + */ +char *nl_rtntype2str(int type, char *buf, size_t size) +{ + return __type2str(type, buf, size, rtntypes, ARRAY_SIZE(rtntypes)); +} + +/** + * Convert character string to routing type. + * @arg name Name of routing type. + * + * Converts the provided character string specifying a routing + * type to the corresponding numeric value. + * + * @return Routing type or a negative value if no match was found. + */ +int nl_str2rtntype(const char *name) +{ + return __str2type(name, rtntypes, ARRAY_SIZE(rtntypes)); +} + +/** @} */ + +/** + * @name Scope Translations + * @{ + */ + +static struct trans_tbl scopes[] = { + __ADD(255,nowhere) + __ADD(254,host) + __ADD(253,link) + __ADD(200,site) + __ADD(0,global) +}; + +/** + * Convert scope identifier to character string. + * @arg scope Scope identifier. + * @arg buf Destination buffer + * @arg size Size of destination buffer. + * + * Converts a scope identifier to a character string and stores it in + * the specified destination buffer. + * + * @return The destination buffer or the type encoded in hexidecimal + * form if the scope identifier is unknown. + */ +char *rtnl_scope2str(int scope, char *buf, size_t size) +{ + return __type2str(scope, buf, size, scopes, ARRAY_SIZE(scopes)); +} + +/** + * Convert character string to scope identifier. + * @arg name Name of scope. + * + * Converts the provided character string specifying a scope identifier + * to the corresponding numeric value. + * + * @return Scope identifier or a negative value if no match was found. + */ +int rtnl_str2scope(const char *name) +{ + return __str2type(name, scopes, ARRAY_SIZE(scopes)); +} + +/** @} */ + +/** + * @name Realms Translations + * @{ + */ + +char * rtnl_realms2str(uint32_t realms, char *buf, size_t len) +{ + int from = RTNL_REALM_FROM(realms); + int to = RTNL_REALM_TO(realms); + + snprintf(buf, len, "%d/%d", from, to); + + return buf; +} + +/** @} */ + + + +/** @} */ diff --git a/lib/route/rule.c b/lib/route/rule.c new file mode 100644 index 0000000..3e04f3f --- /dev/null +++ b/lib/route/rule.c @@ -0,0 +1,1015 @@ +/* + * lib/route/rule.c Routing Rules + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup rtnl + * @defgroup rule Routing Rules + * @brief + * @{ + */ + +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define RULE_ATTR_FAMILY 0x0001 +#define RULE_ATTR_PRIO 0x0002 +#define RULE_ATTR_FWMARK 0x0004 +#define RULE_ATTR_IIF 0x0008 +#define RULE_ATTR_REALMS 0x0010 +#define RULE_ATTR_SRC 0x0020 +#define RULE_ATTR_DST 0x0040 +#define RULE_ATTR_DSFIELD 0x0080 +#define RULE_ATTR_TABLE 0x0100 +#define RULE_ATTR_TYPE 0x0200 +#define RULE_ATTR_SRC_LEN 0x0400 +#define RULE_ATTR_DST_LEN 0x0800 +#define RULE_ATTR_SRCMAP 0x1000 + +static struct nl_cache_ops rtnl_rule_ops; +/** @endcond */ + +static void rule_free_data(struct nl_object *c) +{ + struct rtnl_rule *rule = nl_object_priv(c); + + if (!rule) + return; + + nl_addr_put(rule->r_src); + nl_addr_put(rule->r_dst); +} + +static struct nla_policy rule_policy[RTA_MAX+1] = { + [RTA_PRIORITY] = { .type = NLA_U32 }, + [RTA_FLOW] = { .type = NLA_U32 }, + [RTA_PROTOINFO] = { .type = NLA_U32 }, + [RTA_IIF] = { .type = NLA_STRING, + .maxlen = IFNAMSIZ, }, +}; + +static int rule_msg_parser(struct sockaddr_nl *who, struct nlmsghdr *n, + void *arg) +{ + struct rtnl_rule *rule; + struct rtmsg *r; + struct nlattr *tb[RTA_MAX+1]; + struct nl_parser_param *pp = arg; + int err = 1; + + rule = rtnl_rule_alloc(); + if (!rule) { + err = nl_errno(ENOMEM); + goto errout; + } + + rule->ce_msgtype = n->nlmsg_type; + r = nlmsg_data(n); + + err = nlmsg_parse(n, sizeof(*r), tb, RTA_MAX, rule_policy); + if (err < 0) + goto errout; + + rule->r_family = r->rtm_family; + rule->r_type = r->rtm_type; + rule->r_dsfield = r->rtm_tos; + rule->r_src_len = r->rtm_src_len; + rule->r_dst_len = r->rtm_dst_len; + rule->r_table = r->rtm_table; + rule->r_mask = (RULE_ATTR_FAMILY | RULE_ATTR_TYPE | RULE_ATTR_DSFIELD | + RULE_ATTR_SRC_LEN | RULE_ATTR_DST_LEN | RULE_ATTR_TYPE); + + if (tb[RTA_PRIORITY]) { + rule->r_prio = nla_get_u32(tb[RTA_PRIORITY]); + rule->r_mask |= RULE_ATTR_PRIO; + } + + if (tb[RTA_SRC]) { + rule->r_src = nla_get_addr(tb[RTA_SRC], r->rtm_family); + if (!rule->r_src) { + err = nl_errno(ENOMEM); + goto errout; + } + nl_addr_set_prefixlen(rule->r_src, r->rtm_src_len); + rule->r_mask |= RULE_ATTR_SRC; + } + + if (tb[RTA_DST]) { + rule->r_dst = nla_get_addr(tb[RTA_DST], r->rtm_family); + if (!rule->r_dst) { + err = nl_errno(ENOMEM); + goto errout; + } + nl_addr_set_prefixlen(rule->r_dst, r->rtm_dst_len); + rule->r_mask |= RULE_ATTR_DST; + } + + if (tb[RTA_PROTOINFO]) { + rule->r_fwmark = nla_get_u32(tb[RTA_PROTOINFO]); + rule->r_mask |= RULE_ATTR_FWMARK; + } + + if (tb[RTA_IIF]) { + nla_strlcpy(rule->r_iif, tb[RTA_IIF], IFNAMSIZ); + rule->r_mask |= RULE_ATTR_IIF; + } + + if (tb[RTA_FLOW]) { + rule->r_realms = nla_get_u32(tb[RTA_FLOW]); + rule->r_mask |= RULE_ATTR_REALMS; + } + + if (tb[RTA_GATEWAY]) { + rule->r_srcmap = nla_get_addr(tb[RTA_GATEWAY], r->rtm_family); + if (!rule->r_srcmap) { + err = nl_errno(ENOMEM); + goto errout; + } + rule->r_mask |= RULE_ATTR_SRCMAP; + } + + err = pp->pp_cb((struct nl_object *) rule, pp); + if (err < 0) + goto errout; + + return P_ACCEPT; + +errout: + rtnl_rule_put(rule); + return err; +} + +static int rule_request_update(struct nl_cache *c, struct nl_handle *h) +{ + return nl_rtgen_request(h, RTM_GETRULE, AF_UNSPEC, NLM_F_DUMP); +} + +static int rule_dump_brief(struct nl_object *o, struct nl_dump_params *p) +{ + struct rtnl_rule *r = (struct rtnl_rule *) o; + char buf[128]; + + if (r->r_mask & RULE_ATTR_PRIO) + dp_dump(p, "%d:\t", r->r_prio); + else + dp_dump(p, "0:\t"); + + if (r->r_mask & RULE_ATTR_SRC) + dp_dump(p, "from %s ", + nl_addr2str(r->r_src, buf, sizeof(buf))); + else if (r->r_mask & RULE_ATTR_SRC_LEN && r->r_src_len) + dp_dump(p, "from 0/%d ", r->r_src_len); + + if (r->r_mask & RULE_ATTR_DST) + dp_dump(p, "to %s ", + nl_addr2str(r->r_dst, buf, sizeof(buf))); + else if (r->r_mask & RULE_ATTR_DST_LEN && r->r_dst_len) + dp_dump(p, "to 0/%d ", r->r_dst_len); + + if (r->r_mask & RULE_ATTR_DSFIELD && r->r_dsfield) + dp_dump(p, "tos %d ", r->r_dsfield); + + if (r->r_mask & RULE_ATTR_FWMARK) + dp_dump(p, "fwmark %" PRIx64 , r->r_fwmark); + + if (r->r_mask & RULE_ATTR_IIF) + dp_dump(p, "iif %s ", r->r_iif); + + if (r->r_mask & RULE_ATTR_TABLE) + dp_dump(p, "lookup %s ", + rtnl_route_table2str(r->r_table, buf, sizeof(buf))); + + if (r->r_mask & RULE_ATTR_REALMS) + dp_dump(p, "realms %s ", + rtnl_realms2str(r->r_realms, buf, sizeof(buf))); + + dp_dump(p, "action %s\n", + nl_rtntype2str(r->r_type, buf, sizeof(buf))); + + return 1; +} + +static int rule_dump_full(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_rule *rule = (struct rtnl_rule *) obj; + char buf[128]; + int line; + + line = rule_dump_brief(obj, p); + + dp_dump_line(p, line++, " family %s", + nl_af2str(rule->r_family, buf, sizeof(buf))); + + if (rule->r_mask & RULE_ATTR_SRCMAP) + dp_dump(p, " srcmap %s", + nl_addr2str(rule->r_srcmap, buf, sizeof(buf))); + + dp_dump(p, "\n"); + + return line; +} + +static int rule_dump_stats(struct nl_object *obj, struct nl_dump_params *p) +{ + return rule_dump_full(obj, p); +} + +static int rule_dump_xml(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_rule *rule = (struct rtnl_rule *) obj; + char buf[128]; + int line = 0; + + dp_dump_line(p, line++, "\n"); + + dp_dump_line(p, line++, " %u\n", + rule->r_prio); + dp_dump_line(p, line++, " %s\n", + nl_af2str(rule->r_family, buf, sizeof(buf))); + + if (rule->r_mask & RULE_ATTR_DST) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(rule->r_dst, buf, sizeof(buf))); + + if (rule->r_mask & RULE_ATTR_DST_LEN) + dp_dump_line(p, line++, " %u\n", + rule->r_dst_len); + + if (rule->r_mask & RULE_ATTR_SRC) + dp_dump_line(p, line++, " %s\n", + nl_addr2str(rule->r_src, buf, sizeof(buf))); + + if (rule->r_mask & RULE_ATTR_SRC_LEN) + dp_dump_line(p, line++, " %u\n", + rule->r_src_len); + + if (rule->r_mask & RULE_ATTR_IIF) + dp_dump_line(p, line++, " %s\n", rule->r_iif); + + if (rule->r_mask & RULE_ATTR_TABLE) + dp_dump_line(p, line++, " %u
\n", + rule->r_table); + + if (rule->r_mask & RULE_ATTR_REALMS) + dp_dump_line(p, line++, " %u\n", + rule->r_realms); + + if (rule->r_mask & RULE_ATTR_FWMARK) + dp_dump_line(p, line++, " %" PRIx64 "\n", + rule->r_fwmark); + + if (rule->r_mask & RULE_ATTR_DSFIELD) + dp_dump_line(p, line++, " %u\n", + rule->r_dsfield); + + if (rule->r_mask & RULE_ATTR_TYPE) + dp_dump_line(p, line++, "%s\n", + nl_rtntype2str(rule->r_type, buf, sizeof(buf))); + + if (rule->r_mask & RULE_ATTR_SRCMAP) + dp_dump_line(p, line++, "%s\n", + nl_addr2str(rule->r_srcmap, buf, sizeof(buf))); + + dp_dump_line(p, line++, "\n"); + + return line; +} + +static int rule_dump_env(struct nl_object *obj, struct nl_dump_params *p) +{ + struct rtnl_rule *rule = (struct rtnl_rule *) obj; + char buf[128]; + int line = 0; + + dp_dump_line(p, line++, "RULE_PRIORITY=%u\n", + rule->r_prio); + dp_dump_line(p, line++, "RULE_FAMILY=%s\n", + nl_af2str(rule->r_family, buf, sizeof(buf))); + + if (rule->r_mask & RULE_ATTR_DST) + dp_dump_line(p, line++, "RULE_DST=%s\n", + nl_addr2str(rule->r_dst, buf, sizeof(buf))); + + if (rule->r_mask & RULE_ATTR_DST_LEN) + dp_dump_line(p, line++, "RULE_DSTLEN=%u\n", + rule->r_dst_len); + + if (rule->r_mask & RULE_ATTR_SRC) + dp_dump_line(p, line++, "RULE_SRC=%s\n", + nl_addr2str(rule->r_src, buf, sizeof(buf))); + + if (rule->r_mask & RULE_ATTR_SRC_LEN) + dp_dump_line(p, line++, "RULE_SRCLEN=%u\n", + rule->r_src_len); + + if (rule->r_mask & RULE_ATTR_IIF) + dp_dump_line(p, line++, "RULE_IIF=%s\n", rule->r_iif); + + if (rule->r_mask & RULE_ATTR_TABLE) + dp_dump_line(p, line++, "RULE_TABLE=%u\n", + rule->r_table); + + if (rule->r_mask & RULE_ATTR_REALMS) + dp_dump_line(p, line++, "RULE_REALM=%u\n", + rule->r_realms); + + if (rule->r_mask & RULE_ATTR_FWMARK) + dp_dump_line(p, line++, "RULE_FWMARK=0x%" PRIx64 "\n", + rule->r_fwmark); + + if (rule->r_mask & RULE_ATTR_DSFIELD) + dp_dump_line(p, line++, "RULE_DSFIELD=%u\n", + rule->r_dsfield); + + if (rule->r_mask & RULE_ATTR_TYPE) + dp_dump_line(p, line++, "RULE_TYPE=%s\n", + nl_rtntype2str(rule->r_type, buf, sizeof(buf))); + + if (rule->r_mask & RULE_ATTR_SRCMAP) + dp_dump_line(p, line++, "RULE_SRCMAP=%s\n", + nl_addr2str(rule->r_srcmap, buf, sizeof(buf))); + + return line; +} + + +static int rule_filter(struct nl_object *obj, struct nl_object *filter) +{ + struct rtnl_rule *o = (struct rtnl_rule *) obj; + struct rtnl_rule *f = (struct rtnl_rule *) filter; + +#define REQ(F) (f->r_mask & RULE_ATTR_##F) +#define AVAIL(F) (o->r_mask & RULE_ATTR_##F) +#define _O(F, EXPR) (REQ(F) && (!AVAIL(F) || (EXPR))) +#define _C(F, N) (REQ(F) && (!AVAIL(F) || (o->N != f->N))) + if (_C(FAMILY, r_family) || + _C(TABLE, r_table) || + _C(REALMS, r_realms) || + _C(DSFIELD, r_dsfield) || + _C(TYPE, r_type) || + _C(PRIO, r_prio) || + _C(FWMARK, r_fwmark) || + _C(SRC_LEN, r_src_len) || + _C(DST_LEN, r_dst_len) || + _O(SRC, nl_addr_cmp(o->r_src, f->r_src)) || + _O(DST, nl_addr_cmp(o->r_dst, f->r_dst)) || + _O(IIF, strcmp(o->r_iif, f->r_iif))) + return 0; +#undef REQ +#undef AVAIL +#undef _O +#undef _C + + return 1; +} + +/** + * @name Routing Rule Object Allocation/Freeage + * @{ + */ + +/** + * Allocate a new rule object + * @return New rule object + */ +struct rtnl_rule *rtnl_rule_alloc(void) +{ + return (struct rtnl_rule *) nl_object_alloc_from_ops(&rtnl_rule_ops); +} + +/** + * Give back reference on routing rule object. + * @arg rule Routing rule object to be given back. + * + * Decrements the reference counter and frees the object if the + * last reference has been released. + */ +void rtnl_rule_put(struct rtnl_rule *rule) +{ + nl_object_put((struct nl_object *) rule); +} +/** + * Free routing rule object. + * @arg rule Routing rule object to be freed. + * + * @note Always use rtnl_rule_put() unless you're absolutely sure + * that no other user may have a reference on this object. + */ +void rtnl_rule_free(struct rtnl_rule *rule) +{ + nl_object_free((struct nl_object *) rule); +} + +/** @} */ + +/** + * @name Routing Rule Cache Management + * @{ + */ + +/** + * Build a rule cache including all rules of the specified family currently configured in the kernel. + * @arg handle netlink handle + * @arg family address family + * + * Allocates a new rule cache, initializes it properly and updates it + * to include all rules of the specified address family currently + * configured in the kernel. + * + * @note The caller is responsible for destroying and freeing the + * cache after using it. (nl_cache_destroy_and_free()) + * @return The new cache or NULL if an error occured. + */ +struct nl_cache * rtnl_rule_alloc_cache_by_family(struct nl_handle *handle, + int family) +{ + struct nl_cache * cache = nl_cache_alloc_from_ops(&rtnl_rule_ops); + + if (cache == NULL) + return NULL; + + /* XXX RULE_CACHE_FAMILY(cache) = family; */ + + if (nl_cache_update(handle, cache) < 0) { + free(cache); + return NULL; + } + + return cache; +} + +/** + * Build a rule cache including all rules currently configured in the kernel. + * @arg handle netlink handle + * + * Allocates a new rule cache, initializes it properly and updates it + * to include all rules currently configured in the kernel. + * + * @note The caller is responsible for destroying and freeing the + * cache after using it. (nl_cache_destroy_and_free()) + * @return The new cache or NULL if an error occured. + */ +struct nl_cache * rtnl_rule_alloc_cache(struct nl_handle *handle) +{ + return rtnl_rule_alloc_cache_by_family(handle, AF_UNSPEC); +} + +/** @} */ + +/** + * @name Rule Addition + * @{ + */ + +static struct nl_msg *build_rule_msg(struct rtnl_rule *tmpl, int cmd, int flags) +{ + struct nl_msg *msg; + struct rtmsg rtm = { + .rtm_type = RTN_UNSPEC + }; + + if (cmd == RTM_NEWRULE) + rtm.rtm_type = RTN_UNICAST; + + if (tmpl->r_mask & RULE_ATTR_FAMILY) + rtm.rtm_family = tmpl->r_family; + + if (tmpl->r_mask & RULE_ATTR_TABLE) + rtm.rtm_table = tmpl->r_table; + + if (tmpl->r_mask & RULE_ATTR_DSFIELD) + rtm.rtm_tos = tmpl->r_dsfield; + + if (tmpl->r_mask & RULE_ATTR_TYPE) + rtm.rtm_type = tmpl->r_type; + + if (tmpl->r_mask & RULE_ATTR_SRC_LEN) + rtm.rtm_src_len = tmpl->r_src_len; + + if (tmpl->r_mask & RULE_ATTR_DST_LEN) + rtm.rtm_dst_len = tmpl->r_dst_len; + + msg = nlmsg_build_simple(cmd, flags); + if (!msg) + goto nla_put_failure; + + if (nlmsg_append(msg, &rtm, sizeof(rtm), 1) < 0) + goto nla_put_failure; + + if (tmpl->r_mask & RULE_ATTR_SRC) + NLA_PUT_ADDR(msg, RTA_SRC, tmpl->r_src); + + if (tmpl->r_mask & RULE_ATTR_DST) + NLA_PUT_ADDR(msg, RTA_DST, tmpl->r_dst); + + if (tmpl->r_mask & RULE_ATTR_PRIO) + NLA_PUT_U32(msg, RTA_PRIORITY, tmpl->r_prio); + + if (tmpl->r_mask & RULE_ATTR_FWMARK) + NLA_PUT_U32(msg, RTA_PROTOINFO, tmpl->r_fwmark); + + if (tmpl->r_mask & RULE_ATTR_REALMS) + NLA_PUT_U32(msg, RTA_FLOW, tmpl->r_realms); + + if (tmpl->r_mask & RULE_ATTR_IIF) + NLA_PUT_STRING(msg, RTA_IIF, tmpl->r_iif); + + return msg; + +nla_put_failure: + nlmsg_free(msg); + return NULL; +} + +/** + * Build netlink request message to add a new rule + * @arg tmpl template with data of new rule + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a addition of a new + * rule. The netlink message header isn't fully equipped with + * all relevant fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. \a tmpl must contain the attributes of the new + * address set via \c rtnl_rule_set_* functions. + * + * @return The netlink message + */ +struct nl_msg *rtnl_rule_build_add_request(struct rtnl_rule *tmpl, int flags) +{ + return build_rule_msg(tmpl, RTM_NEWRULE, NLM_F_CREATE | flags); +} + +/** + * Add a new rule + * @arg handle netlink handle + * @arg tmpl template with requested changes + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_rule_build_add_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been fullfilled. + * + * @return 0 on sucess or a negative error if an error occured. + */ +int rtnl_rule_add(struct nl_handle *handle, struct rtnl_rule *tmpl, int flags) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_rule_build_add_request(tmpl, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name Rule Deletion + * @{ + */ + +/** + * Build a netlink request message to delete a rule + * @arg rule rule to delete + * @arg flags additional netlink message flags + * + * Builds a new netlink message requesting a deletion of a rule. + * The netlink message header isn't fully equipped with all relevant + * fields and must thus be sent out via nl_send_auto_complete() + * or supplemented as needed. \a rule must point to an existing + * address. + * + * @return The netlink message + */ +struct nl_msg *rtnl_rule_build_delete_request(struct rtnl_rule *rule, int flags) +{ + return build_rule_msg(rule, RTM_DELRULE, flags); +} + +/** + * Delete a rule + * @arg handle netlink handle + * @arg rule rule to delete + * @arg flags additional netlink message flags + * + * Builds a netlink message by calling rtnl_rule_build_delete_request(), + * sends the request to the kernel and waits for the next ACK to be + * received and thus blocks until the request has been fullfilled. + * + * @return 0 on sucess or a negative error if an error occured. + */ +int rtnl_rule_delete(struct nl_handle *handle, struct rtnl_rule *rule, + int flags) +{ + int err; + struct nl_msg *msg; + + msg = rtnl_rule_build_delete_request(rule, flags); + if (!msg) + return nl_errno(ENOMEM); + + err = nl_send_auto_complete(handle, msg); + if (err < 0) + return err; + + nlmsg_free(msg); + return nl_wait_for_ack(handle); +} + +/** @} */ + +/** + * @name Attribute Modification + * @{ + */ + +/** + * Set the address family of a rule to the specified value + * @arg rule rule to change + * @arg family new address family + */ +void rtnl_rule_set_family(struct rtnl_rule *rule, int family) +{ + rule->r_family = family; + rule->r_mask |= RULE_ATTR_FAMILY; +} + +/** + * Get the address family of a rule + * @arg rule rule handle + * @return Address family or AF_UNSPEC if not set + */ +int rtnl_rule_get_family(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_FAMILY) + return rule->r_family; + else + return AF_UNSPEC; +} + +/** + * Set the priority of a rule to the specified value + * @arg rule rule to change + * @arg prio new priority + */ +void rtnl_rule_set_prio(struct rtnl_rule *rule, int prio) +{ + rule->r_prio = prio; + rule->r_mask |= RULE_ATTR_PRIO; +} + +/** + * Get the priority of a rule + * @arg rule rule handle + * @return Priority or -1 if not set + */ +int rtnl_rule_get_prio(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_PRIO) + return rule->r_prio; + else + return -1; +} + +/** + * Set the firewall mark of a rule to the specified value + * @arg rule rule to change + * @arg fwmark new firewall mark + */ +void rtnl_rule_set_fwmark(struct rtnl_rule *rule, uint64_t fwmark) +{ + rule->r_fwmark = fwmark; + rule->r_mask |= RULE_ATTR_FWMARK; +} + +/** + * Get the firewall mark of a rule + * @arg rule rule handle + * @return Firewall mark or UINT_LEAST64_MAX if not set + */ +uint64_t rtnl_rule_get_fwmark(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_FWMARK) + return rule->r_fwmark; + else + return UINT_LEAST64_MAX; +} + +/** + * Set the table index of a rule to the specified value + * @arg rule rule to change + * @arg table new table + */ +void rtnl_rule_set_table(struct rtnl_rule *rule, int table) +{ + rule->r_table = table; + rule->r_mask |= RULE_ATTR_TABLE; +} + +/** + * Get the table index of a rule + * @arg rule rule handle + * @return Table index or -1 if not set + */ +int rtnl_rule_get_table(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_TABLE) + return rule->r_table; + else + return -1; +} + +/** + * Set the dsfield of a rule to the specified value + * @arg rule rule to change + * @arg dsfield new dsfield value + */ +void rtnl_rule_set_dsfield(struct rtnl_rule *rule, int dsfield) +{ + rule->r_dsfield = dsfield; + rule->r_mask |= RULE_ATTR_DSFIELD; +} + +/** + * Get the dsfield of a rule + * @arg rule rule handle + * @return dsfield or -1 if not set + */ +int rtnl_rule_get_dsfield(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_DSFIELD) + return rule->r_dsfield; + else + return -1; +} + +/** + * Set the source address prefix length of a rule to the specified value + * @arg rule rule to change + * @arg len new source address length + */ +void rtnl_rule_set_src_len(struct rtnl_rule *rule, int len) +{ + rule->r_src_len = len; + if (rule->r_mask & RULE_ATTR_SRC) + nl_addr_set_prefixlen(rule->r_src, len); + rule->r_mask |= RULE_ATTR_SRC_LEN; +} + +/** + * Get the source address prefix length of a rule + * @arg rule rule handle + * @return Prefix length of source address or -1 if not set + */ +int rtnl_rule_get_src_len(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_SRC_LEN) + return rule->r_src_len; + else + return -1; +} + +/** + * Set the destination address prefix length of a rule to the specified value + * @arg rule rule to change + * @arg len new destination address length + */ +void rtnl_rule_set_dst_len(struct rtnl_rule *rule, int len) +{ + rule->r_dst_len = len; + if (rule->r_mask & RULE_ATTR_DST) + nl_addr_set_prefixlen(rule->r_dst, len); + rule->r_mask |= RULE_ATTR_DST_LEN; +} + +/** + * Get the destination address prefix length of a rule + * @arg rule rule handle + * @return Prefix length of destination address or -1 if not set + */ +int rtnl_rule_get_dst_len(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_DST_LEN) + return rule->r_dst_len; + else + return -1; +} + +static inline int __assign_addr(struct rtnl_rule *rule, struct nl_addr **pos, + struct nl_addr *new, uint8_t *len, int flag) +{ + if (rule->r_mask & RULE_ATTR_FAMILY) { + if (new->a_family != rule->r_family) + return nl_error(EINVAL, "Address family mismatch"); + } else + rule->r_family = new->a_family; + + if (*pos) + nl_addr_put(*pos); + + nl_addr_get(new); + *pos = new; + *len = nl_addr_get_prefixlen(new); + + rule->r_mask |= (flag | RULE_ATTR_FAMILY); + + return 0; +} +/** + * Set the source address of a rule + * @arg rule rule to change + * @arg src new source address + * + * Assigns the new source address to the specified rule handle. The + * address is validated against the address family if set already via + * either rtnl_rule_set_family() or by setting one of the other addresses. + * The assignment fails if the address families mismatch. In case the + * address family has not been specified yet, the address family of this + * new address is elected to be the requirement. + * + * @return 0 on success or a negative error code. + */ +int rtnl_rule_set_src(struct rtnl_rule *rule, struct nl_addr *src) +{ + return __assign_addr(rule, &rule->r_src, src, &rule->r_src_len, + RULE_ATTR_SRC | RULE_ATTR_SRC_LEN); +} + +/** + * Get the source address of a rule + * @arg rule rule handle + * @return Source address or NULL if not set + */ +struct nl_addr *rtnl_rule_get_src(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_SRC) + return rule->r_src; + else + return NULL; +} + +/** + * Set the destination address of a rule + * @arg rule rule to change + * @arg dst new destination address + * + * Assigns the new destination address to the specified rule handle. The + * address is validated against the address family if set already via + * either rtnl_rule_set_family() or by setting one of the other addresses. + * The assignment fails if the address families mismatch. In case the + * address family has not been specified yet, the address family of this + * new address is elected to be the requirement. + * + * @return 0 on success or a negative error code. + */ +int rtnl_rule_set_dst(struct rtnl_rule *rule, struct nl_addr *dst) +{ + return __assign_addr(rule, &rule->r_dst, dst, &rule->r_dst_len, + RULE_ATTR_DST | RULE_ATTR_DST_LEN); +} + +/** + * Get the destination address of a rule + * @arg rule rule handle + * @return Destination address or NULL if not set + */ +struct nl_addr *rtnl_rule_get_dst(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_DST) + return rule->r_dst; + else + return NULL; +} + +/** + * Set incoming interface of routing rule object. + * @arg rule Routing rule object to be modified. + * @arg dev Name of incoming interface. + * + * @return 0 on success or a negative error code. + */ +int rtnl_rule_set_iif(struct rtnl_rule *rule, const char *dev) +{ + if (strlen(dev) > IFNAMSIZ-1) + return nl_errno(ERANGE); + + strcpy(rule->r_iif, dev); + rule->r_mask |= RULE_ATTR_IIF; + return 0; +} + +/** + * Get incoming interface of routing rule object. + * @arg rule Routing rule object. + * @return Name of incoming interface or NULL if not available. + */ +char *rtnl_rule_get_iif(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_IIF) + return rule->r_iif; + else + return NULL; +} + +/** + * Set action of routing rule object. + * @arg rule Routing rule object to be modified. + * @arg type New routing type specifying an action. + */ +void rtnl_rule_set_action(struct rtnl_rule *rule, int type) +{ + rule->r_type = type; + rule->r_mask |= RULE_ATTR_TYPE; +} + +/** + * Get action of routing rule object. + * @arg rule Routing rule object. + * @return Routing type or a negative error code. + */ +int rtnl_rule_get_action(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_TYPE) + return rule->r_type; + else + return nl_errno(ENOENT); +} + +/** + * Set realms of routing rule object. + * @arg rule Routing rule object to be modified. + * @arg realms New realms value. + */ +void rtnl_rule_set_realms(struct rtnl_rule *rule, realm_t realms) +{ + rule->r_realms = realms; + rule->r_mask |= RULE_ATTR_REALMS; +} + +/** + * Get realms of routing rule object. + * @arg rule Routing rule object. + * @return Realms value or 0 if not set. + */ +realm_t rtnl_rule_get_realms(struct rtnl_rule *rule) +{ + if (rule->r_mask & RULE_ATTR_REALMS) + return rule->r_realms; + else + return 0; +} + +/** @} */ + +static struct nl_cache_ops rtnl_rule_ops = { + .co_name = "route/rule", + .co_size = sizeof(struct rtnl_rule), + .co_hdrsize = sizeof(struct rtmsg), + .co_msgtypes = { + { RTM_NEWRULE, "new" }, + { RTM_DELRULE, "delete" }, + { RTM_GETRULE, "get" }, + { -1, NULL }, + }, + .co_protocol = NETLINK_ROUTE, + .co_request_update = rule_request_update, + .co_msg_parser = rule_msg_parser, + .co_free_data = rule_free_data, + .co_dump[NL_DUMP_BRIEF] = rule_dump_brief, + .co_dump[NL_DUMP_FULL] = rule_dump_full, + .co_dump[NL_DUMP_STATS] = rule_dump_stats, + .co_dump[NL_DUMP_XML] = rule_dump_xml, + .co_dump[NL_DUMP_ENV] = rule_dump_env, + .co_filter = rule_filter, +}; + +static void __init rule_init(void) +{ + nl_cache_mngt_register(&rtnl_rule_ops); +} + +static void __exit rule_exit(void) +{ + nl_cache_mngt_unregister(&rtnl_rule_ops); +} + +/** @} */ diff --git a/lib/route/sch/blackhole.c b/lib/route/sch/blackhole.c new file mode 100644 index 0000000..207f0bd --- /dev/null +++ b/lib/route/sch/blackhole.c @@ -0,0 +1,38 @@ +/* + * lib/route/sch/blackhole.c Blackhole Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup qdisc + * @defgroup blackhole Blackhole + * @{ + */ + +#include +#include +#include +#include +#include + +static struct rtnl_qdisc_ops blackhole_ops = { + .qo_kind = "blackhole", +}; + +static void __init blackhole_init(void) +{ + rtnl_qdisc_register(&blackhole_ops); +} + +static void __exit blackhole_exit(void) +{ + rtnl_qdisc_unregister(&blackhole_ops); +} + +/** @} */ diff --git a/lib/route/sch/cbq.c b/lib/route/sch/cbq.c new file mode 100644 index 0000000..59f6951 --- /dev/null +++ b/lib/route/sch/cbq.c @@ -0,0 +1,284 @@ +/* + * lib/route/sch/cbq.c Class Based Queueing + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** + * @ingroup qdisc + * @ingroup class + * @defgroup cbq Class Based Queueing (CBQ) + * @{ + */ + +static struct trans_tbl ovl_strategies[] = { + __ADD(TC_CBQ_OVL_CLASSIC,classic) + __ADD(TC_CBQ_OVL_DELAY,delay) + __ADD(TC_CBQ_OVL_LOWPRIO,lowprio) + __ADD(TC_CBQ_OVL_DROP,drop) + __ADD(TC_CBQ_OVL_RCLASSIC,rclassic) +}; + +/** + * Convert a CBQ OVL strategy to a character string + * @arg type CBQ OVL strategy + * @arg buf destination buffer + * @arg len length of destination buffer + * + * Converts a CBQ OVL strategy to a character string and stores in the + * provided buffer. Returns the destination buffer or the type + * encoded in hex if no match was found. + */ +char *nl_ovl_strategy2str(int type, char *buf, size_t len) +{ + return __type2str(type, buf, len, ovl_strategies, + ARRAY_SIZE(ovl_strategies)); +} + +/** + * Convert a string to a CBQ OVL strategy + * @arg name CBQ OVL stragegy name + * + * Converts a CBQ OVL stragegy name to it's corresponding CBQ OVL strategy + * type. Returns the type or -1 if none was found. + */ +int nl_str2ovl_strategy(const char *name) +{ + return __str2type(name, ovl_strategies, ARRAY_SIZE(ovl_strategies)); +} + +static struct nla_policy cbq_policy[TCA_CBQ_MAX+1] = { + [TCA_CBQ_LSSOPT] = { .minlen = sizeof(struct tc_cbq_lssopt) }, + [TCA_CBQ_RATE] = { .minlen = sizeof(struct tc_ratespec) }, + [TCA_CBQ_WRROPT] = { .minlen = sizeof(struct tc_cbq_wrropt) }, + [TCA_CBQ_OVL_STRATEGY] = { .minlen = sizeof(struct tc_cbq_ovl) }, + [TCA_CBQ_FOPT] = { .minlen = sizeof(struct tc_cbq_fopt) }, + [TCA_CBQ_POLICE] = { .minlen = sizeof(struct tc_cbq_police) }, +}; + +static inline struct rtnl_cbq *cbq_qdisc(struct rtnl_tca *tca) +{ + return (struct rtnl_cbq *) tca->tc_subdata; +} + +static inline struct rtnl_cbq *cbq_alloc(struct rtnl_tca *tca) +{ + if (!tca->tc_subdata) + tca->tc_subdata = calloc(1, sizeof(struct rtnl_qdisc)); + + return cbq_qdisc(tca); +} + + +static int cbq_msg_parser(struct rtnl_tca *tca) +{ + struct nlattr *tb[TCA_CBQ_MAX + 1]; + struct rtnl_cbq *cbq; + int err; + + err = tca_parse(tb, TCA_CBQ_MAX, tca, cbq_policy); + if (err < 0) + return err; + + cbq = cbq_alloc(tca); + if (!cbq) + return nl_errno(ENOMEM); + + nla_memcpy(&cbq->cbq_lss, tb[TCA_CBQ_LSSOPT], sizeof(cbq->cbq_lss)); + nla_memcpy(&cbq->cbq_rate, tb[TCA_CBQ_RATE], sizeof(cbq->cbq_rate)); + nla_memcpy(&cbq->cbq_wrr, tb[TCA_CBQ_WRROPT], sizeof(cbq->cbq_wrr)); + nla_memcpy(&cbq->cbq_fopt, tb[TCA_CBQ_FOPT], sizeof(cbq->cbq_fopt)); + nla_memcpy(&cbq->cbq_ovl, tb[TCA_CBQ_OVL_STRATEGY], + sizeof(cbq->cbq_ovl)); + nla_memcpy(&cbq->cbq_police, tb[TCA_CBQ_POLICE], + sizeof(cbq->cbq_police)); + + return 0; +} + +static int cbq_qdisc_msg_parser(struct rtnl_qdisc *qdisc) +{ + return cbq_msg_parser((struct rtnl_tca *) qdisc); +} + +static int cbq_class_msg_parser(struct rtnl_class *class) +{ + return cbq_msg_parser((struct rtnl_tca *) class); +} + +static void cbq_qdisc_free_data(struct rtnl_qdisc *qdisc) +{ + free(qdisc->q_subdata); +} + +static void cbq_class_free_data(struct rtnl_class *class) +{ + free(class->c_subdata); +} + +static int cbq_dump_brief(struct rtnl_tca *tca, struct nl_dump_params *p, + int line) +{ + struct rtnl_cbq *cbq; + double r, rbit; + char *ru, *rubit; + + cbq = cbq_qdisc(tca); + if (!cbq) + goto ignore; + + r = nl_cancel_down_bytes(cbq->cbq_rate.rate, &ru); + rbit = nl_cancel_down_bits(cbq->cbq_rate.rate * 8, &rubit); + + dp_dump(p, " rate %.2f%s/s (%.0f%s) prio %u", + r, ru, rbit, rubit, cbq->cbq_wrr.priority); + +ignore: + return line; +} + +static int cbq_qdisc_dump_brief(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + return cbq_dump_brief((struct rtnl_tca *) qdisc, p, line); +} + +static int cbq_class_dump_brief(struct rtnl_class *class, + struct nl_dump_params *p, int line) +{ + return cbq_dump_brief((struct rtnl_tca *) class, p, line); +} + +static int cbq_dump_full(struct rtnl_tca *tca, struct nl_dump_params *p, + int line) +{ + struct rtnl_cbq *cbq; + char *unit, buf[32]; + double w; + uint32_t el; + + cbq = cbq_qdisc(tca); + if (!cbq) + goto ignore; + + w = nl_cancel_down_bits(cbq->cbq_wrr.weight * 8, &unit); + + dp_dump(p, "avgpkt %u mpu %u cell %u allot %u weight %.0f%s\n", + cbq->cbq_lss.avpkt, + cbq->cbq_rate.mpu, + 1 << cbq->cbq_rate.cell_log, + cbq->cbq_wrr.allot, w, unit); + + el = cbq->cbq_lss.ewma_log; + dp_dump_line(p, line++, " minidle %uus maxidle %uus offtime " + "%uus level %u ewma_log %u\n", + nl_ticks2us(cbq->cbq_lss.minidle >> el), + nl_ticks2us(cbq->cbq_lss.maxidle >> el), + nl_ticks2us(cbq->cbq_lss.offtime >> el), + cbq->cbq_lss.level, + cbq->cbq_lss.ewma_log); + + dp_dump_line(p, line++, " penalty %uus strategy %s ", + nl_ticks2us(cbq->cbq_ovl.penalty), + nl_ovl_strategy2str(cbq->cbq_ovl.strategy, buf, sizeof(buf))); + + dp_dump(p, "split %s defmap 0x%08x ", + rtnl_tc_handle2str(cbq->cbq_fopt.split, buf, sizeof(buf)), + cbq->cbq_fopt.defmap); + + dp_dump(p, "police %s", + nl_police2str(cbq->cbq_police.police, buf, sizeof(buf))); + +ignore: + return line; +} + +static int cbq_qdisc_dump_full(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + return cbq_dump_full((struct rtnl_tca *) qdisc, p, line); +} + +static int cbq_class_dump_full(struct rtnl_class *class, + struct nl_dump_params *p, int line) +{ + return cbq_dump_full((struct rtnl_tca *) class, p, line); +} + +static int cbq_dump_with_stats(struct rtnl_tca *tca, struct nl_dump_params *p, + int line) +{ + struct tc_cbq_xstats *x = tca_xstats(tca); + + if (!x) + goto ignore; + + dp_dump_line(p, line++, " borrows overact " + " avgidle undertime\n"); + dp_dump_line(p, line++, " %10u %10u %10u %10u\n", + x->borrows, x->overactions, x->avgidle, x->undertime); + +ignore: + return line; +} + +static int cbq_qdisc_dump_with_stats(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + return cbq_dump_with_stats((struct rtnl_tca *) qdisc, p, line); +} + +static int cbq_class_dump_with_stats(struct rtnl_class *class, + struct nl_dump_params *p, int line) +{ + return cbq_dump_with_stats((struct rtnl_tca *) class, p, line); +} + +static struct rtnl_qdisc_ops cbq_qdisc_ops = { + .qo_kind = "cbq", + .qo_msg_parser = cbq_qdisc_msg_parser, + .qo_free_data = cbq_qdisc_free_data, + .qo_dump[NL_DUMP_BRIEF] = cbq_qdisc_dump_brief, + .qo_dump[NL_DUMP_FULL] = cbq_qdisc_dump_full, + .qo_dump[NL_DUMP_STATS] = cbq_qdisc_dump_with_stats, +}; + +static struct rtnl_class_ops cbq_class_ops = { + .co_kind = "cbq", + .co_msg_parser = cbq_class_msg_parser, + .co_free_data = cbq_class_free_data, + .co_dump[NL_DUMP_BRIEF] = cbq_class_dump_brief, + .co_dump[NL_DUMP_FULL] = cbq_class_dump_full, + .co_dump[NL_DUMP_STATS] = cbq_class_dump_with_stats, +}; + +static void __init cbq_init(void) +{ + rtnl_qdisc_register(&cbq_qdisc_ops); + rtnl_class_register(&cbq_class_ops); +} + +static void __exit cbq_exit(void) +{ + rtnl_qdisc_unregister(&cbq_qdisc_ops); + rtnl_class_unregister(&cbq_class_ops); +} + +/** @} */ diff --git a/lib/route/sch/dsmark.c b/lib/route/sch/dsmark.c new file mode 100644 index 0000000..6ffa039 --- /dev/null +++ b/lib/route/sch/dsmark.c @@ -0,0 +1,459 @@ +/* + * lib/route/sch/dsmark.c DSMARK + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup qdisc + * @ingroup class + * @defgroup dsmark Differentiated Services Marker (DSMARK) + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define SCH_DSMARK_ATTR_INDICES 0x1 +#define SCH_DSMARK_ATTR_DEFAULT_INDEX 0x2 +#define SCH_DSMARK_ATTR_SET_TC_INDEX 0x4 + +#define SCH_DSMARK_ATTR_MASK 0x1 +#define SCH_DSMARK_ATTR_VALUE 0x2 +/** @endcond */ + +static inline struct rtnl_dsmark_qdisc *dsmark_qdisc(struct rtnl_qdisc *qdisc) +{ + return (struct rtnl_dsmark_qdisc *) qdisc->q_subdata; +} + +static inline struct rtnl_dsmark_qdisc * +dsmark_qdisc_alloc(struct rtnl_qdisc *qdisc) +{ + if (!qdisc->q_subdata) + qdisc->q_subdata = calloc(1, sizeof(struct rtnl_dsmark_qdisc)); + + return dsmark_qdisc(qdisc); +} + +static struct nla_policy dsmark_policy[TCA_DSMARK_MAX+1] = { + [TCA_DSMARK_INDICES] = { .type = NLA_U16 }, + [TCA_DSMARK_DEFAULT_INDEX] = { .type = NLA_U16 }, + [TCA_DSMARK_SET_TC_INDEX] = { .type = NLA_FLAG }, + [TCA_DSMARK_VALUE] = { .type = NLA_U8 }, + [TCA_DSMARK_MASK] = { .type = NLA_U8 }, +}; + +static int dsmark_qdisc_msg_parser(struct rtnl_qdisc *qdisc) +{ + int err; + struct nlattr *tb[TCA_DSMARK_MAX + 1]; + struct rtnl_dsmark_qdisc *dsmark; + + err = tca_parse(tb, TCA_DSMARK_MAX, (struct rtnl_tca *) qdisc, + dsmark_policy); + if (err < 0) + return err; + + dsmark = dsmark_qdisc_alloc(qdisc); + if (!dsmark) + return nl_errno(ENOMEM); + + if (tb[TCA_DSMARK_INDICES]) { + dsmark->qdm_indices = nla_get_u16(tb[TCA_DSMARK_INDICES]); + dsmark->qdm_mask |= SCH_DSMARK_ATTR_INDICES; + } + + if (tb[TCA_DSMARK_DEFAULT_INDEX]) { + dsmark->qdm_default_index = + nla_get_u16(tb[TCA_DSMARK_DEFAULT_INDEX]); + dsmark->qdm_mask |= SCH_DSMARK_ATTR_DEFAULT_INDEX; + } + + if (tb[TCA_DSMARK_SET_TC_INDEX]) { + dsmark->qdm_set_tc_index = 1; + dsmark->qdm_mask |= SCH_DSMARK_ATTR_SET_TC_INDEX; + } + + return 0; +} + +static inline struct rtnl_dsmark_class *dsmark_class(struct rtnl_class *class) +{ + return (struct rtnl_dsmark_class *) class->c_subdata; +} + +static inline struct rtnl_dsmark_class * +dsmark_class_alloc(struct rtnl_class *class) +{ + if (!class->c_subdata) + class->c_subdata = calloc(1, sizeof(struct rtnl_dsmark_class)); + + return dsmark_class(class); +} + +static int dsmark_class_msg_parser(struct rtnl_class *class) +{ + int err; + struct nlattr *tb[TCA_DSMARK_MAX + 1]; + struct rtnl_dsmark_class *dsmark; + + err = tca_parse(tb, TCA_DSMARK_MAX, (struct rtnl_tca *) class, + dsmark_policy); + if (err < 0) + return err; + + dsmark = dsmark_class_alloc(class); + if (!dsmark) + return nl_errno(ENOMEM); + + if (tb[TCA_DSMARK_MASK]) { + dsmark->cdm_bmask = nla_get_u8(tb[TCA_DSMARK_MASK]); + dsmark->cdm_mask |= SCH_DSMARK_ATTR_MASK; + } + + if (tb[TCA_DSMARK_VALUE]) { + dsmark->cdm_value = nla_get_u8(tb[TCA_DSMARK_VALUE]); + dsmark->cdm_mask |= SCH_DSMARK_ATTR_VALUE; + } + + return 0; +} + +static int dsmark_qdisc_dump_brief(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + struct rtnl_dsmark_qdisc *dsmark = dsmark_qdisc(qdisc); + + if (dsmark && (dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES)) + dp_dump(p, " indices 0x%04x", dsmark->qdm_indices); + + return line; +} + +static int dsmark_qdisc_dump_full(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + struct rtnl_dsmark_qdisc *dsmark = dsmark_qdisc(qdisc); + + if (!dsmark) + goto ignore; + + if (dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX) + dp_dump(p, " default index 0x%04x", dsmark->qdm_default_index); + + if (dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX) + dp_dump(p, " set-tc-index"); + +ignore: + return line; +} + +static int dsmark_class_dump_brief(struct rtnl_class *class, + struct nl_dump_params *p, int line) +{ + struct rtnl_dsmark_class *dsmark = dsmark_class(class); + + if (!dsmark) + goto ignore; + + if (dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE) + dp_dump(p, " value 0x%02x", dsmark->cdm_value); + + if (dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK) + dp_dump(p, " mask 0x%02x", dsmark->cdm_bmask); + +ignore: + return line; +} + +static struct nl_msg *dsmark_qdisc_get_opts(struct rtnl_qdisc *qdisc) +{ + struct rtnl_dsmark_qdisc *dsmark = dsmark_qdisc(qdisc); + struct nl_msg *msg; + + if (!dsmark) + return NULL; + + msg = nlmsg_build_no_hdr(); + if (!msg) + goto nla_put_failure; + + if (dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES) + NLA_PUT_U16(msg, TCA_DSMARK_INDICES, dsmark->qdm_indices); + + if (dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX) + NLA_PUT_U16(msg, TCA_DSMARK_DEFAULT_INDEX, + dsmark->qdm_default_index); + + if (dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX) + NLA_PUT_FLAG(msg, TCA_DSMARK_SET_TC_INDEX); + + return msg; + +nla_put_failure: + nlmsg_free(msg); + return NULL; +} + +static struct nl_msg *dsmark_class_get_opts(struct rtnl_class *class) +{ + struct rtnl_dsmark_class *dsmark = dsmark_class(class); + struct nl_msg *msg; + + if (!dsmark) + return NULL; + + msg = nlmsg_build_no_hdr(); + if (!msg) + goto nla_put_failure; + + if (dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK) + NLA_PUT_U8(msg, TCA_DSMARK_MASK, dsmark->cdm_bmask); + + if (dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE) + NLA_PUT_U8(msg, TCA_DSMARK_VALUE, dsmark->cdm_value); + + return msg; + +nla_put_failure: + nlmsg_free(msg); + return NULL; +} + +/** + * @name Class Attribute Access + * @{ + */ + +/** + * Set bitmask of DSMARK class. + * @arg class DSMARK class to be modified. + * @arg mask New bitmask. + * @return 0 on success or a negative error code. + */ +int rtnl_class_dsmark_set_bitmask(struct rtnl_class *class, uint8_t mask) +{ + struct rtnl_dsmark_class *dsmark; + + dsmark = dsmark_class(class); + if (!dsmark) + return nl_errno(ENOMEM); + + dsmark->cdm_bmask = mask; + dsmark->cdm_mask |= SCH_DSMARK_ATTR_MASK; + + return 0; +} + +/** + * Get bitmask of DSMARK class. + * @arg class DSMARK class. + * @return Bitmask or a negative error code. + */ +int rtnl_class_dsmark_get_bitmask(struct rtnl_class *class) +{ + struct rtnl_dsmark_class *dsmark; + + dsmark = dsmark_class(class); + if (dsmark && dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK) + return dsmark->cdm_bmask; + else + return nl_errno(ENOENT); +} + +/** + * Set value of DSMARK class. + * @arg class DSMARK class to be modified. + * @arg value New value. + * @return 0 on success or a negative errror code. + */ +int rtnl_class_dsmark_set_value(struct rtnl_class *class, uint8_t value) +{ + struct rtnl_dsmark_class *dsmark; + + dsmark = dsmark_class(class); + if (!dsmark) + return nl_errno(ENOMEM); + + dsmark->cdm_value = value; + dsmark->cdm_mask |= SCH_DSMARK_ATTR_VALUE; + + return 0; +} + +/** + * Get value of DSMARK class. + * @arg class DSMARK class. + * @return Value or a negative error code. + */ +int rtnl_class_dsmark_get_value(struct rtnl_class *class) +{ + struct rtnl_dsmark_class *dsmark; + + dsmark = dsmark_class(class); + if (dsmark && dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE) + return dsmark->cdm_value; + else + return nl_errno(ENOENT); +} + +/** @} */ + +/** + * @name Qdisc Attribute Access + * @{ + */ + +/** + * Set indices of DSMARK qdisc. + * @arg qdisc DSMARK qdisc to be modified. + * @arg indices New indices. + */ +int rtnl_qdisc_dsmark_set_indices(struct rtnl_qdisc *qdisc, uint16_t indices) +{ + struct rtnl_dsmark_qdisc *dsmark; + + dsmark = dsmark_qdisc(qdisc); + if (!dsmark) + return nl_errno(ENOMEM); + + dsmark->qdm_indices = indices; + dsmark->qdm_mask |= SCH_DSMARK_ATTR_INDICES; + + return 0; +} + +/** + * Get indices of DSMARK qdisc. + * @arg qdisc DSMARK qdisc. + * @return Indices or a negative error code. + */ +int rtnl_qdisc_dsmark_get_indices(struct rtnl_qdisc *qdisc) +{ + struct rtnl_dsmark_qdisc *dsmark; + + dsmark = dsmark_qdisc(qdisc); + if (dsmark && dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES) + return dsmark->qdm_indices; + else + return nl_errno(ENOENT); +} + +/** + * Set default index of DSMARK qdisc. + * @arg qdisc DSMARK qdisc to be modified. + * @arg default_index New default index. + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_dsmark_set_default_index(struct rtnl_qdisc *qdisc, + uint16_t default_index) +{ + struct rtnl_dsmark_qdisc *dsmark; + + dsmark = dsmark_qdisc(qdisc); + if (!dsmark) + return nl_errno(ENOMEM); + + dsmark->qdm_default_index = default_index; + dsmark->qdm_mask |= SCH_DSMARK_ATTR_DEFAULT_INDEX; + + return 0; +} + +/** + * Get default index of DSMARK qdisc. + * @arg qdisc DSMARK qdisc. + * @return Default index or a negative error code. + */ +int rtnl_qdisc_dsmark_get_default_index(struct rtnl_qdisc *qdisc) +{ + struct rtnl_dsmark_qdisc *dsmark; + + dsmark = dsmark_qdisc(qdisc); + if (dsmark && dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX) + return dsmark->qdm_default_index; + else + return nl_errno(ENOENT); +} + +/** + * Set set-tc-index flag of DSMARK qdisc. + * @arg qdisc DSMARK qdisc to be modified. + * @arg flag Flag indicating whether to enable or disable. + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_dsmark_set_set_tc_index(struct rtnl_qdisc *qdisc, int flag) +{ + struct rtnl_dsmark_qdisc *dsmark; + + dsmark = dsmark_qdisc(qdisc); + if (!dsmark) + return nl_errno(ENOMEM); + + dsmark->qdm_set_tc_index = !!flag; + dsmark->qdm_mask |= SCH_DSMARK_ATTR_SET_TC_INDEX; + + return 0; +} + +/** + * Get set-tc-index flag of DSMARK qdisc. + * @arg qdisc DSMARK qdisc to be modified. + * @return 1 or 0 to indicate wehther the flag is enabled or a negative + * error code. + */ +int rtnl_qdisc_dsmark_get_set_tc_index(struct rtnl_qdisc *qdisc) +{ + struct rtnl_dsmark_qdisc *dsmark; + + dsmark = dsmark_qdisc(qdisc); + if (dsmark && dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX) + return dsmark->qdm_set_tc_index; + else + return nl_errno(ENOENT); +} + +/** @} */ + +static struct rtnl_qdisc_ops dsmark_qdisc_ops = { + .qo_kind = "dsmark", + .qo_msg_parser = dsmark_qdisc_msg_parser, + .qo_dump[NL_DUMP_BRIEF] = dsmark_qdisc_dump_brief, + .qo_dump[NL_DUMP_FULL] = dsmark_qdisc_dump_full, + .qo_get_opts = dsmark_qdisc_get_opts, +}; + +static struct rtnl_class_ops dsmark_class_ops = { + .co_kind = "dsmark", + .co_msg_parser = dsmark_class_msg_parser, + .co_dump[NL_DUMP_BRIEF] = dsmark_class_dump_brief, + .co_get_opts = dsmark_class_get_opts, +}; + +static void __init dsmark_init(void) +{ + rtnl_qdisc_register(&dsmark_qdisc_ops); + rtnl_class_register(&dsmark_class_ops); +} + +static void __exit dsmark_exit(void) +{ + rtnl_qdisc_unregister(&dsmark_qdisc_ops); + rtnl_class_unregister(&dsmark_class_ops); +} + +/** @} */ diff --git a/lib/route/sch/fifo.c b/lib/route/sch/fifo.c new file mode 100644 index 0000000..1d36fca --- /dev/null +++ b/lib/route/sch/fifo.c @@ -0,0 +1,205 @@ +/* + * lib/route/sch/fifo.c (p|b)fifo + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup qdisc + * @defgroup fifo Packet/Bytes FIFO (pfifo/bfifo) + * @brief + * + * The FIFO qdisc comes in two flavours: + * @par bfifo (Byte FIFO) + * Allows enqueuing until the currently queued volume in bytes exceeds + * the configured limit.backlog contains currently enqueued volume in bytes. + * + * @par pfifo (Packet FIFO) + * Allows enquueing until the currently queued number of packets + * exceeds the configured limit. + * + * The configuration is exactly the same, the decision which of + * the two variations is going to be used is made based on the + * kind of the qdisc (rtnl_qdisc_set_kind()). + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define SCH_FIFO_ATTR_LIMIT 1 +/** @endcond */ + +static inline struct rtnl_fifo *fifo_qdisc(struct rtnl_qdisc *qdisc) +{ + return (struct rtnl_fifo *) qdisc->q_subdata; +} + +static inline struct rtnl_fifo *fifo_alloc(struct rtnl_qdisc *qdisc) +{ + if (!qdisc->q_subdata) + qdisc->q_subdata = calloc(1, sizeof(struct rtnl_fifo)); + + return fifo_qdisc(qdisc); +} + +static int fifo_msg_parser(struct rtnl_qdisc *qdisc) +{ + struct rtnl_fifo *fifo; + struct tc_fifo_qopt *opt; + + if (qdisc->q_opts->d_size < sizeof(struct tc_fifo_qopt)) + return nl_error(EINVAL, "FIFO options size mismatch"); + + fifo = fifo_alloc(qdisc); + if (!fifo) + return nl_errno(ENOMEM); + + opt = (struct tc_fifo_qopt *) qdisc->q_opts->d_data; + fifo->qf_limit = opt->limit; + fifo->qf_mask = SCH_FIFO_ATTR_LIMIT; + + return 0; +} + +static void fifo_free_data(struct rtnl_qdisc *qdisc) +{ + free(qdisc->q_subdata); +} + +static int pfifo_dump_brief(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + struct rtnl_fifo *fifo = fifo_qdisc(qdisc); + + if (fifo) + dp_dump(p, " limit %u packets", fifo->qf_limit); + + return line; +} + +static int bfifo_dump_brief(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + struct rtnl_fifo *fifo = fifo_qdisc(qdisc); + + if (fifo) { + char *unit; + double r; + + r = nl_cancel_down_bytes(fifo->qf_limit, &unit); + dp_dump(p, " limit %.1f%s", r, unit); + } + + return line; +} + +static struct nl_msg *fifo_get_opts(struct rtnl_qdisc *qdisc) +{ + struct rtnl_fifo *fifo; + struct tc_fifo_qopt opts; + struct nl_msg *msg; + + fifo = fifo_qdisc(qdisc); + if (!fifo || !(fifo->qf_mask & SCH_FIFO_ATTR_LIMIT)) + return NULL; + + msg = nlmsg_build_no_hdr(); + if (!msg) + goto errout; + + memset(&opts, 0, sizeof(opts)); + opts.limit = fifo->qf_limit; + + if (nlmsg_append(msg, &opts, sizeof(opts), 0) < 0) + goto errout; + + return msg; +errout: + nlmsg_free(msg); + return NULL; +} + +/** + * @name Attribute Modification + * @{ + */ + +/** + * Set limit of FIFO qdisc. + * @arg qdisc FIFO qdisc to be modified. + * @arg limit New limit. + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_fifo_set_limit(struct rtnl_qdisc *qdisc, int limit) +{ + struct rtnl_fifo *fifo; + + fifo = fifo_alloc(qdisc); + if (!fifo) + return nl_errno(ENOMEM); + + fifo->qf_limit = limit; + fifo->qf_mask |= SCH_FIFO_ATTR_LIMIT; + + return 0; +} + +/** + * Get limit of a FIFO qdisc. + * @arg qdisc FIFO qdisc. + * @return Numeric limit or a negative error code. + */ +int rtnl_qdisc_fifo_get_limit(struct rtnl_qdisc *qdisc) +{ + struct rtnl_fifo *fifo; + + fifo = fifo_qdisc(qdisc); + if (fifo && fifo->qf_mask & SCH_FIFO_ATTR_LIMIT) + return fifo->qf_limit; + else + return nl_errno(ENOMEM); +} + +/** @} */ + +static struct rtnl_qdisc_ops pfifo_ops = { + .qo_kind = "pfifo", + .qo_msg_parser = fifo_msg_parser, + .qo_free_data = fifo_free_data, + .qo_dump[NL_DUMP_BRIEF] = pfifo_dump_brief, + .qo_get_opts = fifo_get_opts, +}; + +static struct rtnl_qdisc_ops bfifo_ops = { + .qo_kind = "bfifo", + .qo_msg_parser = fifo_msg_parser, + .qo_free_data = fifo_free_data, + .qo_dump[NL_DUMP_BRIEF] = bfifo_dump_brief, + .qo_get_opts = fifo_get_opts, +}; + +static void __init fifo_init(void) +{ + rtnl_qdisc_register(&pfifo_ops); + rtnl_qdisc_register(&bfifo_ops); +} + +static void __exit fifo_exit(void) +{ + rtnl_qdisc_unregister(&pfifo_ops); + rtnl_qdisc_unregister(&bfifo_ops); +} + +/** @} */ diff --git a/lib/route/sch/htb.c b/lib/route/sch/htb.c new file mode 100644 index 0000000..df641bc --- /dev/null +++ b/lib/route/sch/htb.c @@ -0,0 +1,426 @@ +/* + * lib/route/sch/htb.c HTB Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + * Copyright (c) 2005-2006 Petr Gotthard + * Copyright (c) 2005-2006 Siemens AG Oesterreich + */ + +/** + * @ingroup qdisc + * @ingroup class + * @defgroup htb Hierachical Token Bucket (HTB) + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define SCH_HTB_HAS_RATE2QUANTUM 0x01 +#define SCH_HTB_HAS_DEFCLS 0x02 + +#define SCH_HTB_HAS_PRIO 0x01 +#define SCH_HTB_HAS_MTU 0x02 +#define SCH_HTB_HAS_RATE 0x04 +#define SCH_HTB_HAS_CEIL 0x08 +#define SCH_HTB_HAS_RBUFFER 0x10 +#define SCH_HTB_HAS_CBUFFER 0x20 +/** @endcond */ + +static inline struct rtnl_htb_qdisc *htb_qdisc(struct rtnl_qdisc *qdisc) +{ + if (qdisc->q_subdata == NULL) + qdisc->q_subdata = calloc(1, sizeof(struct rtnl_htb_qdisc)); + + return (struct rtnl_htb_qdisc *) qdisc->q_subdata; +} + +static struct nla_policy htb_policy[TCA_HTB_MAX+1] = { + [TCA_HTB_INIT] = { .minlen = sizeof(struct tc_htb_glob) }, + [TCA_HTB_PARMS] = { .minlen = sizeof(struct tc_htb_opt) }, +}; + +static int htb_qdisc_msg_parser(struct rtnl_qdisc *qdisc) +{ + int err; + struct nlattr *tb[TCA_HTB_MAX + 1]; + struct rtnl_htb_qdisc *d; + + err = tca_parse(tb, TCA_HTB_MAX, (struct rtnl_tca *) qdisc, htb_policy); + if (err < 0) + return err; + + d = htb_qdisc(qdisc); + + if (tb[TCA_HTB_INIT]) { + struct tc_htb_glob opts; + + nla_memcpy(&opts, tb[TCA_HTB_INIT], sizeof(opts)); + d->qh_rate2quantum = opts.rate2quantum; + d->qh_defcls = opts.defcls; + + d->qh_mask = (SCH_HTB_HAS_RATE2QUANTUM | SCH_HTB_HAS_DEFCLS); + } + + return 0; +} + +static void htb_qdisc_free_data(struct rtnl_qdisc *qdisc) +{ + free(qdisc->q_subdata); +} + +static inline struct rtnl_htb_class *htb_class(struct rtnl_class *class) +{ + if (class->c_subdata == NULL) + class->c_subdata = calloc(1, sizeof(struct rtnl_htb_class)); + + return (struct rtnl_htb_class *) class->c_subdata; +} + +static int htb_class_msg_parser(struct rtnl_class *class) +{ + int err; + struct nlattr *tb[TCA_HTB_MAX + 1]; + struct rtnl_htb_class *d; + + err = tca_parse(tb, TCA_HTB_MAX, (struct rtnl_tca *) class, htb_policy); + if (err < 0) + return err; + + d = htb_class(class); + + if (tb[TCA_HTB_PARMS]) { + struct tc_htb_opt opts; + + nla_memcpy(&opts, tb[TCA_HTB_PARMS], sizeof(opts)); + d->ch_prio = opts.prio; + rtnl_copy_ratespec(&d->ch_rate, &opts.rate); + rtnl_copy_ratespec(&d->ch_ceil, &opts.ceil); + d->ch_rbuffer = opts.buffer; + d->ch_cbuffer = opts.cbuffer; + + d->ch_mask = (SCH_HTB_HAS_PRIO | SCH_HTB_HAS_RATE | + SCH_HTB_HAS_CEIL | SCH_HTB_HAS_RBUFFER | + SCH_HTB_HAS_CBUFFER); + } + + return 0; +} + +static void htb_class_free_data(struct rtnl_class *class) +{ + free(class->c_subdata); +} + +static int htb_qdisc_dump_brief(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + struct rtnl_htb_qdisc *d = (struct rtnl_htb_qdisc *) qdisc->q_subdata; + + if (d == NULL) + goto ignore; + + if (d->qh_mask & SCH_HTB_HAS_RATE2QUANTUM) + dp_dump(p, " r2q %u", d->qh_rate2quantum); + + if (d->qh_mask & SCH_HTB_HAS_DEFCLS) { + char buf[32]; + dp_dump(p, " default %s", + rtnl_tc_handle2str(d->qh_defcls, buf, sizeof(buf))); + } + +ignore: + return line; +} + +static int htb_class_dump_brief(struct rtnl_class *class, + struct nl_dump_params *p, int line) +{ + struct rtnl_htb_class *d = (struct rtnl_htb_class *) class->c_subdata; + + if (d == NULL) + goto ignore; + + if (d->ch_mask & SCH_HTB_HAS_RATE) { + double r, rbit; + char *ru, *rubit; + + r = nl_cancel_down_bytes(d->ch_rate.rs_rate, &ru); + rbit = nl_cancel_down_bits(d->ch_rate.rs_rate*8, &rubit); + + dp_dump(p, " rate %.2f%s/s (%.0f%s) log %u", + r, ru, rbit, rubit, 1<ch_rate.rs_cell_log); + } + +ignore: + return line; +} + +static int htb_class_dump_full(struct rtnl_class *class, + struct nl_dump_params *p, int line) +{ + struct rtnl_htb_class *d = (struct rtnl_htb_class *) class->c_subdata; + + if (d == NULL) + goto ignore; + + /* line 1 */ + if (d->ch_mask & SCH_HTB_HAS_CEIL) { + double r, rbit; + char *ru, *rubit; + + r = nl_cancel_down_bytes(d->ch_ceil.rs_rate, &ru); + rbit = nl_cancel_down_bits(d->ch_ceil.rs_rate*8, &rubit); + + dp_dump(p, " ceil %.2f%s/s (%.0f%s) log %u", + r, ru, rbit, rubit, 1<ch_ceil.rs_cell_log); + } + + if (d->ch_mask & SCH_HTB_HAS_PRIO) + dp_dump(p, " prio %u", d->ch_prio); + if (d->ch_mask & SCH_HTB_HAS_RBUFFER) + dp_dump(p, " rbuffer %u", d->ch_rbuffer); + if (d->ch_mask & SCH_HTB_HAS_CBUFFER) + dp_dump(p, " cbuffer %u", d->ch_cbuffer); + +ignore: + return line; +} + +static struct nl_msg *htb_qdisc_get_opts(struct rtnl_qdisc *qdisc) +{ + struct rtnl_htb_qdisc *d = (struct rtnl_htb_qdisc *) qdisc->q_subdata; + struct tc_htb_glob opts; + struct nl_msg *msg; + + if (d == NULL) + return NULL; + + msg = nlmsg_build(NULL); + if (msg == NULL) + return NULL; + + memset(&opts, 0, sizeof(opts)); + opts.version = TC_HTB_PROTOVER; + + if (d->qh_mask & SCH_HTB_HAS_RATE2QUANTUM) + opts.rate2quantum = d->qh_rate2quantum; + if (d->qh_mask & SCH_HTB_HAS_DEFCLS) + opts.defcls = d->qh_defcls; + + nla_put(msg, TCA_HTB_INIT, sizeof(opts), &opts); + + return msg; +} + +static inline uint32_t compute_burst(uint32_t rate, uint32_t mtu) +{ + return rtnl_tc_calc_txtime(rate / nl_get_hz() + mtu, rate); +} + +static uint8_t compute_cell(uint32_t rate, uint32_t mtu) +{ + uint8_t cell_log = 0; + while (mtu > 255) { + mtu >>= 1; + cell_log++; + } + + return cell_log; +} + +static struct nl_msg *htb_class_get_opts(struct rtnl_class *class) +{ + struct rtnl_htb_class *d = (struct rtnl_htb_class *) class->c_subdata; + uint32_t rtable[256], ctable[256]; + struct tc_htb_opt opts; + struct nl_msg *msg; + + + if (d == NULL) + return NULL; + + msg = nlmsg_build(NULL); + memset(&opts, 0, sizeof(opts)); + + /* if not set, zero (0) is used as priority */ + if (d->ch_mask & SCH_HTB_HAS_PRIO) + opts.prio = d->ch_prio; + + if (!(d->ch_mask & SCH_HTB_HAS_RATE)) + BUG(); + + rtnl_rcopy_ratespec(&opts.rate, &d->ch_rate); + /* if cell_log not set, compute default value */ + if (opts.rate.cell_log == UINT8_MAX) + { + if(!(d->ch_mask & SCH_HTB_HAS_MTU)) + BUG(); + opts.rate.cell_log = compute_cell(opts.rate.rate, d->ch_mtu); + } + + /* if not set, configured rate is used as ceil, which implies no borrowing */ + if (d->ch_mask & SCH_HTB_HAS_CEIL) + rtnl_rcopy_ratespec(&opts.ceil, &d->ch_ceil); + else + memcpy(&opts.ceil, &opts.rate, sizeof(struct tc_ratespec)); + /* if cell_log not set, compute default value */ + if (opts.ceil.cell_log == UINT8_MAX) + { + if(!(d->ch_mask & SCH_HTB_HAS_MTU)) + BUG(); + opts.ceil.cell_log = compute_cell(opts.ceil.rate, d->ch_mtu); + } + + if (d->ch_mask & SCH_HTB_HAS_RBUFFER) + opts.buffer = d->ch_rbuffer; + else + { + if(!(d->ch_mask & SCH_HTB_HAS_MTU)) + BUG(); + opts.buffer = compute_burst(opts.rate.rate, d->ch_mtu); + } + + if (d->ch_mask & SCH_HTB_HAS_CBUFFER) + opts.cbuffer = d->ch_cbuffer; + else + { + if(!(d->ch_mask & SCH_HTB_HAS_MTU)) + BUG(); + opts.cbuffer = compute_burst(opts.ceil.rate, d->ch_mtu); + } + + nla_put(msg, TCA_HTB_PARMS, sizeof(opts), &opts); + rtnl_tc_build_rate_table(rtable, opts.rate.mpu & 0xff, + opts.rate.mpu >> 8, 1 << opts.rate.cell_log, + opts.rate.rate); + nla_put(msg, TCA_HTB_RTAB, sizeof(rtable), &rtable); + rtnl_tc_build_rate_table(ctable, opts.ceil.mpu & 0xff, + opts.ceil.mpu >> 8, 1 << opts.ceil.cell_log, + opts.ceil.rate); + nla_put(msg, TCA_HTB_CTAB, sizeof(ctable), &ctable); + + return msg; +} + +/** + * @name Attribute Modifications + * @{ + */ + +void rtnl_htb_set_rate2quantum(struct rtnl_qdisc *qdisc, uint32_t rate2quantum) +{ + struct rtnl_htb_qdisc *d = htb_qdisc(qdisc); + if (d == NULL) + return; + + d->qh_rate2quantum = rate2quantum; + d->qh_mask |= SCH_HTB_HAS_RATE2QUANTUM; +} + +/** + * Set default class of the htb qdisc to the specified value + * @arg qdisc qdisc to change + * @arg defcls new default class + */ +void rtnl_htb_set_defcls(struct rtnl_qdisc *qdisc, uint32_t defcls) +{ + struct rtnl_htb_qdisc *d = htb_qdisc(qdisc); + if (d == NULL) + return; + + d->qh_defcls = defcls; + d->qh_mask |= SCH_HTB_HAS_DEFCLS; +} + +void rtnl_htb_set_prio(struct rtnl_class *class, uint32_t prio) +{ + struct rtnl_htb_class *d = htb_class(class); + if (d == NULL) + return; + + d->ch_prio = prio; + d->ch_mask |= SCH_HTB_HAS_PRIO; +} + +void rtnl_htb_set_mtu(struct rtnl_class *class, uint32_t mtu) +{ + struct rtnl_htb_class *d = htb_class(class); + if (d == NULL) + return; + + d->ch_mtu = mtu; + d->ch_mask |= SCH_HTB_HAS_MTU; +} + +void rtnl_htb_set_rate(struct rtnl_class *class, uint32_t rate) +{ + struct rtnl_htb_class *d = htb_class(class); + if (d == NULL) + return; + + d->ch_rate.rs_cell_log = UINT8_MAX; /* use default value */ + d->ch_rate.rs_rate = rate; + d->ch_mask |= SCH_HTB_HAS_RATE; +} + +void rtnl_htb_set_ceil(struct rtnl_class *class, uint32_t ceil) +{ + struct rtnl_htb_class *d = htb_class(class); + if (d == NULL) + return; + + d->ch_ceil.rs_cell_log = UINT8_MAX; /* use default value */ + d->ch_ceil.rs_rate = ceil; + d->ch_mask |= SCH_HTB_HAS_CEIL; +} + +/** @} */ + +static struct rtnl_qdisc_ops htb_qdisc_ops = { + .qo_kind = "htb", + .qo_msg_parser = htb_qdisc_msg_parser, + .qo_free_data = htb_qdisc_free_data, + .qo_dump[NL_DUMP_BRIEF] = htb_qdisc_dump_brief, + .qo_get_opts = htb_qdisc_get_opts, +}; + +static struct rtnl_class_ops htb_class_ops = { + .co_kind = "htb", + .co_msg_parser = htb_class_msg_parser, + .co_free_data = htb_class_free_data, + .co_dump[NL_DUMP_BRIEF] = htb_class_dump_brief, + .co_dump[NL_DUMP_FULL] = htb_class_dump_full, + .co_get_opts = htb_class_get_opts, +}; + +static void __init htb_init(void) +{ + rtnl_qdisc_register(&htb_qdisc_ops); + rtnl_class_register(&htb_class_ops); +} + +static void __exit htb_exit(void) +{ + rtnl_qdisc_unregister(&htb_qdisc_ops); + rtnl_class_unregister(&htb_class_ops); +} + +/** @} */ diff --git a/lib/route/sch/netem.c b/lib/route/sch/netem.c new file mode 100644 index 0000000..75e33c5 --- /dev/null +++ b/lib/route/sch/netem.c @@ -0,0 +1,603 @@ +/* + * lib/route/sch/netem.c Network Emulator Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup qdisc + * @defgroup netem Network Emulator + * @brief + * + * For further documentation see http://linux-net.osdl.org/index.php/Netem + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define SCH_NETEM_ATTR_LATENCY 0x001 +#define SCH_NETEM_ATTR_LIMIT 0x002 +#define SCH_NETEM_ATTR_LOSS 0x004 +#define SCH_NETEM_ATTR_GAP 0x008 +#define SCH_NETEM_ATTR_DUPLICATE 0x010 +#define SCH_NETEM_ATTR_JITTER 0x020 +#define SCH_NETEM_ATTR_DELAY_CORR 0x040 +#define SCH_NETEM_ATTR_LOSS_CORR 0x080 +#define SCH_NETEM_ATTR_DUP_CORR 0x100 +#define SCH_NETEM_ATTR_RO_PROB 0x200 +#define SCH_NETEM_ATTR_RO_CORR 0x400 +/** @endcond */ + +static inline struct rtnl_netem *netem_qdisc(struct rtnl_qdisc *qdisc) +{ + return (struct rtnl_netem *) qdisc->q_subdata; +} + +static inline struct rtnl_netem *netem_alloc(struct rtnl_qdisc *qdisc) +{ + if (!qdisc->q_subdata) + qdisc->q_subdata = calloc(1, sizeof(struct rtnl_netem)); + + return netem_qdisc(qdisc); +} + +static struct nla_policy netem_policy[TCA_NETEM_MAX+1] = { + [TCA_NETEM_CORR] = { .minlen = sizeof(struct tc_netem_corr) }, + [TCA_NETEM_REORDER] = { .minlen = sizeof(struct tc_netem_reorder) }, +}; + +static int netem_msg_parser(struct rtnl_qdisc *qdisc) +{ + int len, err = 0; + struct rtnl_netem *netem; + struct tc_netem_qopt *opts; + + if (qdisc->q_opts->d_size < sizeof(*opts)) + return nl_error(EINVAL, "Netem specific options size mismatch"); + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + opts = (struct tc_netem_qopt *) qdisc->q_opts->d_data; + netem->qnm_latency = opts->latency; + netem->qnm_limit = opts->limit; + netem->qnm_loss = opts->loss; + netem->qnm_gap = opts->gap; + netem->qnm_duplicate = opts->duplicate; + netem->qnm_jitter = opts->jitter; + + netem->qnm_mask = (SCH_NETEM_ATTR_LATENCY | SCH_NETEM_ATTR_LIMIT | + SCH_NETEM_ATTR_LOSS | SCH_NETEM_ATTR_GAP | + SCH_NETEM_ATTR_DUPLICATE | SCH_NETEM_ATTR_JITTER); + + len = qdisc->q_opts->d_size - sizeof(*opts); + + if (len > 0) { + struct nlattr *tb[TCA_NETEM_MAX+1]; + + err = nla_parse(tb, TCA_NETEM_MAX, (struct nlattr *) + qdisc->q_opts->d_data + sizeof(*opts), + len, netem_policy); + if (err < 0) { + free(netem); + return err; + } + + if (tb[TCA_NETEM_CORR]) { + struct tc_netem_corr cor; + + nla_memcpy(&cor, tb[TCA_NETEM_CORR], sizeof(cor)); + netem->qnm_corr.nmc_delay = cor.delay_corr; + netem->qnm_corr.nmc_loss = cor.loss_corr; + netem->qnm_corr.nmc_duplicate = cor.dup_corr; + + netem->qnm_mask |= (SCH_NETEM_ATTR_DELAY_CORR | + SCH_NETEM_ATTR_LOSS_CORR | + SCH_NETEM_ATTR_DELAY_CORR); + } + + if (tb[TCA_NETEM_REORDER]) { + struct tc_netem_reorder ro; + + nla_memcpy(&ro, tb[TCA_NETEM_REORDER], sizeof(ro)); + netem->qnm_ro.nmro_probability = ro.probability; + netem->qnm_ro.nmro_correlation = ro.correlation; + + netem->qnm_mask |= (SCH_NETEM_ATTR_RO_PROB | + SCH_NETEM_ATTR_RO_CORR); + } + } + + return 0; +} + +static void netem_free_data(struct rtnl_qdisc *qdisc) +{ + free(qdisc->q_subdata); +} + +static int netem_dump_brief(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, + int line) +{ + struct rtnl_netem *netem = netem_qdisc(qdisc); + + if (netem) + dp_dump(p, "limit %d", netem->qnm_limit); + + return line; +} + +static int netem_dump_full(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, + int line) +{ + return line; +} + +static struct nl_msg *netem_get_opts(struct rtnl_qdisc *qdisc) +{ + return NULL; +} + +/** + * @name Queue Limit + * @{ + */ + +/** + * Set limit of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg limit New limit in bytes. + * @return 0 on success or a negative error code. + */ +int rtnl_netem_set_limit(struct rtnl_qdisc *qdisc, int limit) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_limit = limit; + netem->qnm_mask |= SCH_NETEM_ATTR_LIMIT; + + return 0; +} + +/** + * Get limit of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Limit in bytes or a negative error code. + */ +int rtnl_netem_get_limit(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_LIMIT)) + return netem->qnm_limit; + else + return nl_errno(ENOENT); +} + +/** @} */ + +/** + * @name Packet Re-ordering + * @{ + */ + +/** + * Set re-ordering gap of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg gap New gap in number of packets. + * @return 0 on success or a negative error code. + */ +int rtnl_netem_set_gap(struct rtnl_qdisc *qdisc, int gap) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_gap = gap; + netem->qnm_mask |= SCH_NETEM_ATTR_GAP; + + return 0; +} + +/** + * Get re-ordering gap of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Re-ordering gap in packets or a negative error code. + */ +int rtnl_netem_get_gap(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_GAP)) + return netem->qnm_gap; + else + return nl_errno(ENOENT); +} + +/** + * Set re-ordering probability of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg prob New re-ordering probability. + * @return 0 on success or a negative error code. + */ +int rtnl_netem_set_reorder_probability(struct rtnl_qdisc *qdisc, int prob) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_ro.nmro_probability = prob; + netem->qnm_mask |= SCH_NETEM_ATTR_RO_PROB; + + return 0; +} + +/** + * Get re-ordering probability of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Re-ordering probability or a negative error code. + */ +int rtnl_netem_get_reorder_probability(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_RO_PROB)) + return netem->qnm_ro.nmro_probability; + else + return nl_errno(ENOENT); +} + +/** + * Set re-order correlation probability of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg prob New re-ordering correlation probability. + * @return 0 on success or a negative error code. + */ +int rtnl_netem_set_reorder_correlation(struct rtnl_qdisc *qdisc, int prob) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_ro.nmro_correlation = prob; + netem->qnm_mask |= SCH_NETEM_ATTR_RO_CORR; + + return 0; +} + +/** + * Get re-ordering correlation probability of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Re-ordering correlation probability or a negative error code. + */ +int rtnl_netem_get_reorder_correlation(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_RO_CORR)) + return netem->qnm_ro.nmro_correlation; + else + return nl_errno(ENOENT); +} + +/** @} */ + +/** + * @name Packet Loss + * @{ + */ + +/** + * Set packet loss probability of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg prob New packet loss probability. + * @return 0 on success or a negative error code. + */ +int rtnl_netem_set_loss(struct rtnl_qdisc *qdisc, int prob) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_loss = prob; + netem->qnm_mask |= SCH_NETEM_ATTR_LOSS; + + return 0; +} + +/** + * Get packet loss probability of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Packet loss probability or a negative error code. + */ +int rtnl_netem_get_loss(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_LOSS)) + return netem->qnm_loss; + else + return nl_errno(ENOENT); +} + +/** + * Set packet loss correlation probability of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg prob New packet loss correlation. + * @return 0 on success or a negative error code. + */ +int rtnl_netem_set_loss_correlation(struct rtnl_qdisc *qdisc, int prob) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_corr.nmc_loss = prob; + netem->qnm_mask |= SCH_NETEM_ATTR_LOSS_CORR; + + return 0; +} + +/** + * Get packet loss correlation probability of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Packet loss correlation probability or a negative error code. + */ +int rtnl_netem_get_loss_correlation(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_LOSS_CORR)) + return netem->qnm_corr.nmc_loss; + else + return nl_errno(ENOENT); +} + +/** @} */ + +/** + * @name Packet Duplication + * @{ + */ + +/** + * Set packet duplication probability of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg prob New packet duplication probability. + * @return 0 on success or a negative error code. + */ +int rtnl_netem_set_duplicate(struct rtnl_qdisc *qdisc, int prob) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_duplicate = prob; + netem->qnm_mask |= SCH_NETEM_ATTR_DUPLICATE; + + return 0; +} + +/** + * Get packet duplication probability of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Packet duplication probability or a negative error code. + */ +int rtnl_netem_get_duplicate(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_DUPLICATE)) + return netem->qnm_duplicate; + else + return nl_errno(ENOENT); +} + +/** + * Set packet duplication correlation probability of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg prob New packet duplication correlation probability. + * @return 0 on sucess or a negative error code. + */ +int rtnl_netem_set_duplicate_correlation(struct rtnl_qdisc *qdisc, int prob) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_corr.nmc_duplicate = prob; + netem->qnm_mask |= SCH_NETEM_ATTR_DUP_CORR; + + return 0; +} + +/** + * Get packet duplication correlation probability of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Packet duplication correlation probability or a negative error code. + */ +int rtnl_netem_get_duplicate_correlation(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_DUP_CORR)) + return netem->qnm_corr.nmc_duplicate; + else + return nl_errno(ENOENT); +} + +/** @} */ + +/** + * @name Packet Delay + * @{ + */ + +/** + * Set packet delay of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg delay New packet delay in micro seconds. + * @return 0 on success or a negative error code. + */ +int rtnl_netem_set_delay(struct rtnl_qdisc *qdisc, int delay) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_latency = nl_us2ticks(delay); + netem->qnm_mask |= SCH_NETEM_ATTR_LATENCY; + + return 0; +} + +/** + * Get packet delay of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Packet delay in micro seconds or a negative error code. + */ +int rtnl_netem_get_delay(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_LATENCY)) + return nl_ticks2us(netem->qnm_latency); + else + return nl_errno(ENOENT); +} + +/** + * Set packet delay jitter of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg jitter New packet delay jitter in micro seconds. + * @return 0 on success or a negative error code. + */ +int rtnl_netem_set_jitter(struct rtnl_qdisc *qdisc, int jitter) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_jitter = nl_us2ticks(jitter); + netem->qnm_mask |= SCH_NETEM_ATTR_JITTER; + + return 0; +} + +/** + * Get packet delay jitter of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Packet delay jitter in micro seconds or a negative error code. + */ +int rtnl_netem_get_jitter(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_JITTER)) + return nl_ticks2us(netem->qnm_jitter); + else + return nl_errno(ENOENT); +} + +/** + * Set packet delay correlation probability of netem qdisc. + * @arg qdisc Netem qdisc to be modified. + * @arg prob New packet delay correlation probability. + */ +int rtnl_netem_set_delay_correlation(struct rtnl_qdisc *qdisc, int prob) +{ + struct rtnl_netem *netem; + + netem = netem_alloc(qdisc); + if (!netem) + return nl_errno(ENOMEM); + + netem->qnm_corr.nmc_delay = prob; + netem->qnm_mask |= SCH_NETEM_ATTR_DELAY_CORR; + + return 0; +} + +/** + * Get packet delay correlation probability of netem qdisc. + * @arg qdisc Netem qdisc. + * @return Packet delay correlation probability or a negative error code. + */ +int rtnl_netem_get_delay_corellation(struct rtnl_qdisc *qdisc) +{ + struct rtnl_netem *netem; + + netem = netem_qdisc(qdisc); + if (netem && (netem->qnm_mask & SCH_NETEM_ATTR_DELAY_CORR)) + return netem->qnm_corr.nmc_delay; + else + return nl_errno(ENOENT); +} + +/** @} */ + +static struct rtnl_qdisc_ops netem_ops = { + .qo_kind = "netem", + .qo_msg_parser = netem_msg_parser, + .qo_free_data = netem_free_data, + .qo_dump[NL_DUMP_BRIEF] = netem_dump_brief, + .qo_dump[NL_DUMP_FULL] = netem_dump_full, + .qo_get_opts = netem_get_opts, +}; + +static void __init netem_init(void) +{ + rtnl_qdisc_register(&netem_ops); +} + +static void __exit netem_exit(void) +{ + rtnl_qdisc_unregister(&netem_ops); +} + +/** @} */ diff --git a/lib/route/sch/prio.c b/lib/route/sch/prio.c new file mode 100644 index 0000000..aa06f9c --- /dev/null +++ b/lib/route/sch/prio.c @@ -0,0 +1,332 @@ +/* + * lib/route/sch/prio.c PRIO Qdisc/Class + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup qdisc + * @defgroup prio (Fast) Prio + * @brief + * + * @par 1) Typical PRIO configuration + * @code + * // Specify the maximal number of bands to be used for this PRIO qdisc. + * rtnl_qdisc_prio_set_bands(qdisc, QDISC_PRIO_DEFAULT_BANDS); + * + * // Provide a map assigning each priority to a band number. + * uint8_t map[] = QDISC_PRIO_DEFAULT_PRIOMAP; + * rtnl_qdisc_prio_set_priomap(qdisc, map, sizeof(map)); + * @endcode + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define SCH_PRIO_ATTR_BANDS 1 +#define SCH_PRIO_ATTR_PRIOMAP 2 +/** @endcond */ + +static inline struct rtnl_prio *prio_qdisc(struct rtnl_qdisc *qdisc) +{ + return (struct rtnl_prio *) qdisc->q_subdata; +} + +static inline struct rtnl_prio *prio_alloc(struct rtnl_qdisc *qdisc) +{ + if (!qdisc->q_subdata) + qdisc->q_subdata = calloc(1, sizeof(struct rtnl_prio)); + + return prio_qdisc(qdisc); +} + +static int prio_msg_parser(struct rtnl_qdisc *qdisc) +{ + struct rtnl_prio *prio; + struct tc_prio_qopt *opt; + + if (qdisc->q_opts->d_size < sizeof(*opt)) + return nl_error(EINVAL, "prio specific option size mismatch"); + + prio = prio_alloc(qdisc); + if (!prio) + return nl_errno(ENOMEM); + + opt = (struct tc_prio_qopt *) qdisc->q_opts->d_data; + prio->qp_bands = opt->bands; + memcpy(prio->qp_priomap, opt->priomap, sizeof(prio->qp_priomap)); + prio->qp_mask = (SCH_PRIO_ATTR_BANDS | SCH_PRIO_ATTR_PRIOMAP); + + return 0; +} + +static void prio_free_data(struct rtnl_qdisc *qdisc) +{ + free(qdisc->q_subdata); +} + +static int prio_dump_brief(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + struct rtnl_prio *prio = prio_qdisc(qdisc); + + if (prio) + dp_dump(p, " bands %u", prio->qp_bands); + + return line; +} + +static int prio_dump_full(struct rtnl_qdisc *qdisc, + struct nl_dump_params *p, int line) +{ + struct rtnl_prio *prio = prio_qdisc(qdisc); + int i, hp; + + if (!prio) + goto ignore; + + dp_dump(p, "priomap ["); + + for (i = 0; i <= TC_PRIO_MAX; i++) + dp_dump(p, "%u%s", prio->qp_priomap[i], + i < TC_PRIO_MAX ? " " : ""); + + dp_dump(p, "]\n"); + dp_new_line(p, line++); + + hp = (((TC_PRIO_MAX/2) + 1) & ~1); + + for (i = 0; i < hp; i++) { + char a[32]; + dp_dump(p, " %18s => %u", + rtnl_prio2str(i, a, sizeof(a)), + prio->qp_priomap[i]); + if (hp+i <= TC_PRIO_MAX) { + dp_dump(p, " %18s => %u", + rtnl_prio2str(hp+i, a, sizeof(a)), + prio->qp_priomap[hp+i]); + if (i < (hp - 1)) { + dp_dump(p, "\n"); + dp_new_line(p, line++); + } + } + } + +ignore: + return line; +} + +static struct nl_msg *prio_get_opts(struct rtnl_qdisc *qdisc) +{ + struct rtnl_prio *prio; + struct tc_prio_qopt opts; + struct nl_msg *msg; + + prio = prio_qdisc(qdisc); + if (!prio || + !(prio->qp_mask & SCH_PRIO_ATTR_PRIOMAP)) + goto errout; + + opts.bands = prio->qp_bands; + memcpy(opts.priomap, prio->qp_priomap, sizeof(opts.priomap)); + + msg = nlmsg_build_no_hdr(); + if (!msg) + goto errout; + + if (nlmsg_append(msg, &opts, sizeof(opts), 0) < 0) { + nlmsg_free(msg); + goto errout; + } + + return msg; +errout: + return NULL; +} + +/** + * @name Attribute Modification + * @{ + */ + +/** + * Set number of bands of PRIO qdisc. + * @arg qdisc PRIO qdisc to be modified. + * @arg bands New number of bands. + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_prio_set_bands(struct rtnl_qdisc *qdisc, int bands) +{ + struct rtnl_prio *prio; + + prio = prio_alloc(qdisc); + if (!prio) + return nl_errno(ENOMEM); + + prio->qp_bands = bands; + prio->qp_mask |= SCH_PRIO_ATTR_BANDS; + + return 0; +} + +/** + * Get number of bands of PRIO qdisc. + * @arg qdisc PRIO qdisc. + * @return Number of bands or a negative error code. + */ +int rtnl_qdisc_prio_get_bands(struct rtnl_qdisc *qdisc) +{ + struct rtnl_prio *prio; + + prio = prio_qdisc(qdisc); + if (prio && prio->qp_mask & SCH_PRIO_ATTR_BANDS) + return prio->qp_bands; + else + return nl_errno(ENOMEM); +} + +/** + * Set priomap of the PRIO qdisc. + * @arg qdisc PRIO qdisc to be modified. + * @arg priomap New priority mapping. + * @arg len Length of priomap (# of elements). + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_prio_set_priomap(struct rtnl_qdisc *qdisc, uint8_t priomap[], + int len) +{ + struct rtnl_prio *prio; + int i; + + prio = prio_alloc(qdisc); + if (!prio) + return nl_errno(ENOMEM); + + if (!(prio->qp_mask & SCH_PRIO_ATTR_BANDS)) + return nl_error(EINVAL, "Set number of bands first"); + + if ((len / sizeof(uint8_t)) > (TC_PRIO_MAX+1)) + return nl_error(ERANGE, "priomap length out of bounds"); + + for (i = 0; i <= TC_PRIO_MAX; i++) { + if (priomap[i] > prio->qp_bands) + return nl_error(ERANGE, "priomap element %d " \ + "out of bounds, increase bands number"); + } + + memcpy(prio->qp_priomap, priomap, len); + prio->qp_mask |= SCH_PRIO_ATTR_PRIOMAP; + + return 0; +} + +/** + * Get priomap of a PRIO qdisc. + * @arg qdisc PRIO qdisc. + * @return Priority mapping as array of size TC_PRIO_MAX+1 + * or NULL if an error occured. + */ +uint8_t *rtnl_qdisc_prio_get_priomap(struct rtnl_qdisc *qdisc) +{ + struct rtnl_prio *prio; + + prio = prio_qdisc(qdisc); + if (prio && prio->qp_mask & SCH_PRIO_ATTR_PRIOMAP) + return prio->qp_priomap; + else { + nl_errno(ENOENT); + return NULL; + } +} + +/** @} */ + +/** + * @name Priority Band Translations + * @{ + */ + +static struct trans_tbl prios[] = { + __ADD(TC_PRIO_BESTEFFORT,besteffort) + __ADD(TC_PRIO_FILLER,filler) + __ADD(TC_PRIO_BULK,bulk) + __ADD(TC_PRIO_INTERACTIVE_BULK,interactive_bulk) + __ADD(TC_PRIO_INTERACTIVE,interactive) + __ADD(TC_PRIO_CONTROL,control) +}; + +/** + * Convert priority to character string. + * @arg prio Priority. + * @arg buf Destination buffer + * @arg size Size of destination buffer. + * + * Converts a priority to a character string and stores the result in + * the specified destination buffer. + * + * @return Name of priority as character string. + */ +char * rtnl_prio2str(int prio, char *buf, size_t size) +{ + return __type2str(prio, buf, size, prios, ARRAY_SIZE(prios)); +} + +/** + * Convert character string to priority. + * @arg name Name of priority. + * + * Converts the provided character string specifying a priority + * to the corresponding numeric value. + * + * @return Numeric priority or a negative value if no match was found. + */ +int rtnl_str2prio(const char *name) +{ + return __str2type(name, prios, ARRAY_SIZE(prios)); +} + +/** @} */ + +static struct rtnl_qdisc_ops prio_ops = { + .qo_kind = "prio", + .qo_msg_parser = prio_msg_parser, + .qo_free_data = prio_free_data, + .qo_dump[NL_DUMP_BRIEF] = prio_dump_brief, + .qo_dump[NL_DUMP_FULL] = prio_dump_full, + .qo_get_opts = prio_get_opts, +}; + +static struct rtnl_qdisc_ops pfifo_fast_ops = { + .qo_kind = "pfifo_fast", + .qo_msg_parser = prio_msg_parser, + .qo_free_data = prio_free_data, + .qo_dump[NL_DUMP_BRIEF] = prio_dump_brief, + .qo_dump[NL_DUMP_FULL] = prio_dump_full, + .qo_get_opts = prio_get_opts, +}; + +static void __init prio_init(void) +{ + rtnl_qdisc_register(&prio_ops); + rtnl_qdisc_register(&pfifo_fast_ops); +} + +static void __exit prio_exit(void) +{ + rtnl_qdisc_unregister(&prio_ops); + rtnl_qdisc_unregister(&pfifo_fast_ops); +} + +/** @} */ diff --git a/lib/route/sch/red.c b/lib/route/sch/red.c new file mode 100644 index 0000000..80a44af --- /dev/null +++ b/lib/route/sch/red.c @@ -0,0 +1,219 @@ +/* + * lib/route/sch/red.c RED Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup qdisc + * @defgroup red Random Early Detection (RED) + * @brief + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define RED_ATTR_LIMIT 0x01 +#define RED_ATTR_QTH_MIN 0x02 +#define RED_ATTR_QTH_MAX 0x04 +#define RED_ATTR_FLAGS 0x08 +#define RED_ATTR_WLOG 0x10 +#define RED_ATTR_PLOG 0x20 +#define RED_ATTR_SCELL_LOG 0x40 +/** @endcond */ + +static inline struct rtnl_red *red_qdisc(struct rtnl_qdisc *qdisc) +{ + return (struct rtnl_red *) qdisc->q_subdata; +} + +static inline struct rtnl_red *red_alloc(struct rtnl_qdisc *qdisc) +{ + if (!qdisc->q_subdata) + qdisc->q_subdata = calloc(1, sizeof(struct rtnl_red)); + + return red_qdisc(qdisc); +} + +static struct nla_policy red_policy[TCA_RED_MAX+1] = { + [TCA_RED_PARMS] = { .minlen = sizeof(struct tc_red_qopt) }, +}; + +static int red_msg_parser(struct rtnl_qdisc *qdisc) +{ + struct nlattr *tb[TCA_RED_MAX+1]; + struct rtnl_red *red; + struct tc_red_qopt *opts; + int err; + + if (!(qdisc->q_mask & TCA_ATTR_OPTS)) + return 0; + + err = tca_parse(tb, TCA_RED_MAX, (struct rtnl_tca *) qdisc, red_policy); + if (err < 0) + return err; + + if (!tb[TCA_RED_PARMS]) + return nl_error(EINVAL, "Missing TCA_RED_PARMS"); + + red = red_alloc(qdisc); + if (!red) + return nl_errno(ENOMEM); + + opts = nla_data(tb[TCA_RED_PARMS]); + + red->qr_limit = opts->limit; + red->qr_qth_min = opts->qth_min; + red->qr_qth_max = opts->qth_max; + red->qr_flags = opts->flags; + red->qr_wlog = opts->Wlog; + red->qr_plog = opts->Plog; + red->qr_scell_log = opts->Scell_log; + + red->qr_mask = (RED_ATTR_LIMIT | RED_ATTR_QTH_MIN | RED_ATTR_QTH_MAX | + RED_ATTR_FLAGS | RED_ATTR_WLOG | RED_ATTR_PLOG | + RED_ATTR_SCELL_LOG); + + return 0; +} + +static int red_dump_brief(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, + int line) +{ + struct rtnl_red *red = red_qdisc(qdisc); + + if (red) { + /* XXX: limit, min, max, flags */ + } + + return line; +} + +static int red_dump_full(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, + int line) +{ + struct rtnl_red *red = red_qdisc(qdisc); + + if (red) { + /* XXX: wlog, plog, scell_log */ + } + + return line; +} + +static int red_dump_stats(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, + int line) +{ + struct rtnl_red *red = red_qdisc(qdisc); + + if (red) { + /* XXX: xstats */ + } + + return line; +} + +static struct nl_msg *red_get_opts(struct rtnl_qdisc *qdisc) +{ + struct rtnl_red *red; + struct nl_msg *msg; + + red = red_qdisc(qdisc); + if (!red) + return NULL; + + msg = nlmsg_build_no_hdr(); + if (!msg) + goto errout; + +#if 0 + memset(&opts, 0, sizeof(opts)); + opts.quantum = sfq->qs_quantum; + opts.perturb_period = sfq->qs_perturb; + opts.limit = sfq->qs_limit; + + if (nlmsg_append(msg, &opts, sizeof(opts), 0) < 0) + goto errout; +#endif + + return msg; +errout: + nlmsg_free(msg); + return NULL; +} + +/** + * @name Attribute Access + * @{ + */ + +/** + * Set limit of RED qdisc. + * @arg qdisc RED qdisc to be modified. + * @arg limit New limit in number of packets. + * @return 0 on success or a negative error code. + */ +int rtnl_red_set_limit(struct rtnl_qdisc *qdisc, int limit) +{ + struct rtnl_red *red; + + red = red_alloc(qdisc); + if (!red) + return nl_errno(ENOMEM); + + red->qr_limit = limit; + red->qr_mask |= RED_ATTR_LIMIT; + + return 0; +} + +/** + * Get limit of RED qdisc. + * @arg qdisc RED qdisc. + * @return Limit or a negative error code. + */ +int rtnl_red_get_limit(struct rtnl_qdisc *qdisc) +{ + struct rtnl_red *red; + + red = red_qdisc(qdisc); + if (red && (red->qr_mask & RED_ATTR_LIMIT)) + return red->qr_limit; + else + return nl_errno(ENOENT); +} + +/** @} */ + +static struct rtnl_qdisc_ops red_ops = { + .qo_kind = "red", + .qo_msg_parser = red_msg_parser, + .qo_dump[NL_DUMP_BRIEF] = red_dump_brief, + .qo_dump[NL_DUMP_FULL] = red_dump_full, + .qo_dump[NL_DUMP_STATS] = red_dump_stats, + .qo_get_opts = red_get_opts, +}; + +static void __init red_init(void) +{ + rtnl_qdisc_register(&red_ops); +} + +static void __exit red_exit(void) +{ + rtnl_qdisc_unregister(&red_ops); +} + +/** @} */ diff --git a/lib/route/sch/sfq.c b/lib/route/sch/sfq.c new file mode 100644 index 0000000..2e7d3ce --- /dev/null +++ b/lib/route/sch/sfq.c @@ -0,0 +1,294 @@ +/* + * lib/route/sch/sfq.c SFQ Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup qdisc + * @defgroup sfq Stochastic Fairness Queueing (SFQ) + * @brief + * + * @par Parameter Description + * - \b Quantum: Number of bytes to send out per slot and round. + * - \b Perturbation: Timer period between changing the hash function. + * - \b Limit: Upper limit of queue in number of packets before SFQ starts + * dropping packets. + * - \b Divisor: Hash table divisor, i.e. size of hash table. + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define SCH_SFQ_ATTR_QUANTUM 0x01 +#define SCH_SFQ_ATTR_PERTURB 0x02 +#define SCH_SFQ_ATTR_LIMIT 0x04 +#define SCH_SFQ_ATTR_DIVISOR 0x08 +#define SCH_SFQ_ATTR_FLOWS 0x10 +/** @endcond */ + +static inline struct rtnl_sfq *sfq_qdisc(struct rtnl_qdisc *qdisc) +{ + return (struct rtnl_sfq *) qdisc->q_subdata; +} + +static inline struct rtnl_sfq *sfq_alloc(struct rtnl_qdisc *qdisc) +{ + if (!qdisc->q_subdata) + qdisc->q_subdata = calloc(1, sizeof(struct rtnl_sfq)); + + return sfq_qdisc(qdisc); +} + +static int sfq_msg_parser(struct rtnl_qdisc *qdisc) +{ + struct rtnl_sfq *sfq; + struct tc_sfq_qopt *opts; + + if (!(qdisc->q_mask & TCA_ATTR_OPTS)) + return 0; + + if (qdisc->q_opts->d_size < sizeof(*opts)) + return nl_error(EINVAL, "SFQ specific options size mismatch"); + + sfq = sfq_alloc(qdisc); + if (!sfq) + return nl_errno(ENOMEM); + + opts = (struct tc_sfq_qopt *) qdisc->q_opts->d_data; + + sfq->qs_quantum = opts->quantum; + sfq->qs_perturb = opts->perturb_period; + sfq->qs_limit = opts->limit; + sfq->qs_divisor = opts->divisor; + sfq->qs_flows = opts->flows; + + sfq->qs_mask = (SCH_SFQ_ATTR_QUANTUM | SCH_SFQ_ATTR_PERTURB | + SCH_SFQ_ATTR_LIMIT | SCH_SFQ_ATTR_DIVISOR | + SCH_SFQ_ATTR_FLOWS); + + return 0; +} + +static void sfq_free_data(struct rtnl_qdisc *qdisc) +{ + free(qdisc->q_subdata); +} + +static int sfq_dump_brief(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, + int line) +{ + struct rtnl_sfq *sfq = sfq_qdisc(qdisc); + + if (sfq) + dp_dump(p, " quantum %u perturb %us", + sfq->qs_quantum, + nl_ticks2us(sfq->qs_perturb * nl_get_hz())); + + return line; +} + +static int sfq_dump_full(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, + int line) +{ + struct rtnl_sfq *sfq = sfq_qdisc(qdisc); + + if (sfq) + dp_dump(p, "limit %u divisor %u", + sfq->qs_limit, sfq->qs_divisor); + + return line; +} + +static struct nl_msg *sfq_get_opts(struct rtnl_qdisc *qdisc) +{ + struct rtnl_sfq *sfq; + struct tc_sfq_qopt opts; + struct nl_msg *msg; + + sfq = sfq_qdisc(qdisc); + if (!sfq) + return NULL; + + msg = nlmsg_build_no_hdr(); + if (!msg) + goto errout; + + memset(&opts, 0, sizeof(opts)); + opts.quantum = sfq->qs_quantum; + opts.perturb_period = sfq->qs_perturb; + opts.limit = sfq->qs_limit; + + if (nlmsg_append(msg, &opts, sizeof(opts), 0) < 0) + goto errout; + + return msg; +errout: + nlmsg_free(msg); + return NULL; +} + +/** + * @name Attribute Access + * @{ + */ + +/** + * Set quantum of SFQ qdisc. + * @arg qdisc SFQ qdisc to be modified. + * @arg quantum New quantum in bytes. + * @return 0 on success or a negative error code. + */ +int rtnl_sfq_set_quantum(struct rtnl_qdisc *qdisc, int quantum) +{ + struct rtnl_sfq *sfq; + + sfq = sfq_alloc(qdisc); + if (!sfq) + return nl_errno(ENOMEM); + + sfq->qs_quantum = quantum; + sfq->qs_mask |= SCH_SFQ_ATTR_QUANTUM; + + return 0; +} + +/** + * Get quantum of SFQ qdisc. + * @arg qdisc SFQ qdisc. + * @return Quantum in bytes or a negative error code. + */ +int rtnl_sfq_get_quantum(struct rtnl_qdisc *qdisc) +{ + struct rtnl_sfq *sfq; + + sfq = sfq_qdisc(qdisc); + if (sfq && sfq->qs_mask & SCH_SFQ_ATTR_QUANTUM) + return sfq->qs_quantum; + else + return nl_errno(ENOENT); +} + +/** + * Set limit of SFQ qdisc. + * @arg qdisc SFQ qdisc to be modified. + * @arg limit New limit in number of packets. + * @return 0 on success or a negative error code. + */ +int rtnl_sfq_set_limit(struct rtnl_qdisc *qdisc, int limit) +{ + struct rtnl_sfq *sfq; + + sfq = sfq_alloc(qdisc); + if (!sfq) + return nl_errno(ENOMEM); + + sfq->qs_limit = limit; + sfq->qs_mask |= SCH_SFQ_ATTR_LIMIT; + + return 0; +} + +/** + * Get limit of SFQ qdisc. + * @arg qdisc SFQ qdisc. + * @return Limit or a negative error code. + */ +int rtnl_sfq_get_limit(struct rtnl_qdisc *qdisc) +{ + struct rtnl_sfq *sfq; + + sfq = sfq_qdisc(qdisc); + if (sfq && sfq->qs_mask & SCH_SFQ_ATTR_LIMIT) + return sfq->qs_limit; + else + return nl_errno(ENOENT); +} + +/** + * Set perturbation interval of SFQ qdisc. + * @arg qdisc SFQ qdisc to be modified. + * @arg perturb New perturbation interval in seconds. + * @note A value of 0 disables perturbation altogether. + * @return 0 on success or a negative error code. + */ +int rtnl_sfq_set_perturb(struct rtnl_qdisc *qdisc, int perturb) +{ + struct rtnl_sfq *sfq; + + sfq = sfq_alloc(qdisc); + if (!sfq) + return nl_errno(ENOMEM); + + sfq->qs_perturb = perturb; + sfq->qs_mask |= SCH_SFQ_ATTR_PERTURB; + + return 0; +} + +/** + * Get perturbation interval of SFQ qdisc. + * @arg qdisc SFQ qdisc. + * @return Perturbation interval in seconds or a negative error code. + */ +int rtnl_sfq_get_perturb(struct rtnl_qdisc *qdisc) +{ + struct rtnl_sfq *sfq; + + sfq = sfq_qdisc(qdisc); + if (sfq && sfq->qs_mask & SCH_SFQ_ATTR_PERTURB) + return sfq->qs_perturb; + else + return nl_errno(ENOENT); +} + +/** + * Get divisor of SFQ qdisc. + * @arg qdisc SFQ qdisc. + * @return Divisor in number of entries or a negative error code. + */ +int rtnl_sfq_get_divisor(struct rtnl_qdisc *qdisc) +{ + struct rtnl_sfq *sfq; + + sfq = sfq_qdisc(qdisc); + if (sfq && sfq->qs_mask & SCH_SFQ_ATTR_DIVISOR) + return sfq->qs_divisor; + else + return nl_errno(ENOENT); +} + +/** @} */ + +static struct rtnl_qdisc_ops sfq_ops = { + .qo_kind = "sfq", + .qo_msg_parser = sfq_msg_parser, + .qo_free_data = sfq_free_data, + .qo_dump[NL_DUMP_BRIEF] = sfq_dump_brief, + .qo_dump[NL_DUMP_FULL] = sfq_dump_full, + .qo_get_opts = sfq_get_opts, +}; + +static void __init sfq_init(void) +{ + rtnl_qdisc_register(&sfq_ops); +} + +static void __exit sfq_exit(void) +{ + rtnl_qdisc_unregister(&sfq_ops); +} + +/** @} */ diff --git a/lib/route/sch/tbf.c b/lib/route/sch/tbf.c new file mode 100644 index 0000000..f3d50a5 --- /dev/null +++ b/lib/route/sch/tbf.c @@ -0,0 +1,540 @@ +/* + * lib/route/sch/tbf.c TBF Qdisc + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup qdisc + * @defgroup tbf Token Bucket Filter (TBF) + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ +#define TBF_ATTR_LIMIT 0x01 +#define TBF_ATTR_RATE 0x02 +#define TBF_ATTR_PEAKRATE 0x10 +#define TBF_ATTR_MPU 0x80 +/** @endcond */ + +static inline struct rtnl_tbf *tbf_qdisc(struct rtnl_qdisc *qdisc) +{ + return (struct rtnl_tbf *) qdisc->q_subdata; +} + +static inline struct rtnl_tbf *tbf_alloc(struct rtnl_qdisc *qdisc) +{ + if (!qdisc->q_subdata) + qdisc->q_subdata = calloc(1, sizeof(struct rtnl_tbf)); + + return tbf_qdisc(qdisc); +} + +static struct nla_policy tbf_policy[TCA_TBF_MAX+1] = { + [TCA_TBF_PARMS] = { .minlen = sizeof(struct tc_tbf_qopt) }, +}; + +static int tbf_msg_parser(struct rtnl_qdisc *q) +{ + int err; + struct nlattr *tb[TCA_TBF_MAX + 1]; + struct rtnl_tbf *tbf; + + err = tca_parse(tb, TCA_TBF_MAX, (struct rtnl_tca *) q, tbf_policy); + if (err < 0) + return err; + + tbf = tbf_qdisc(q); + if (!tbf) + return nl_errno(ENOMEM); + + if (tb[TCA_TBF_PARMS]) { + struct tc_tbf_qopt opts; + int bufsize; + + nla_memcpy(&opts, tb[TCA_TBF_PARMS], sizeof(opts)); + tbf->qt_limit = opts.limit; + tbf->qt_mpu = opts.rate.mpu; + + rtnl_copy_ratespec(&tbf->qt_rate, &opts.rate); + tbf->qt_rate_txtime = opts.buffer; + bufsize = rtnl_tc_calc_bufsize(nl_ticks2us(opts.buffer), + opts.rate.rate); + tbf->qt_rate_bucket = bufsize; + + rtnl_copy_ratespec(&tbf->qt_peakrate, &opts.peakrate); + tbf->qt_peakrate_txtime = opts.mtu; + bufsize = rtnl_tc_calc_bufsize(nl_ticks2us(opts.mtu), + opts.peakrate.rate); + tbf->qt_peakrate_bucket = bufsize; + + tbf->qt_mask = (TBF_ATTR_LIMIT | TBF_ATTR_MPU | TBF_ATTR_RATE | + TBF_ATTR_PEAKRATE); + } + + return 0; +} + +static int tbf_dump_brief(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, + int line) +{ + double r, rbit, lim; + char *ru, *rubit, *limu; + struct rtnl_tbf *tbf = tbf_qdisc(qdisc); + + if (!tbf) + goto ignore; + + r = nl_cancel_down_bytes(tbf->qt_rate.rs_rate, &ru); + rbit = nl_cancel_down_bits(tbf->qt_rate.rs_rate*8, &rubit); + lim = nl_cancel_down_bytes(tbf->qt_limit, &limu); + + dp_dump(p, " rate %.2f%s/s (%.0f%s) limit %.2f%s", + r, ru, rbit, rubit, lim, limu); + +ignore: + return line; +} + +static int tbf_dump_full(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, + int line) +{ + struct rtnl_tbf *tbf = tbf_qdisc(qdisc); + + if (!tbf) + goto ignore; + + if (1) { + char *bu, *cu; + double bs = nl_cancel_down_bytes(tbf->qt_rate_bucket, &bu); + double cl = nl_cancel_down_bytes(1 << tbf->qt_rate.rs_cell_log, + &cu); + + dp_dump(p, "mpu %u rate-bucket-size %1.f%s " + "rate-cell-size %.1f%s\n", + tbf->qt_mpu, bs, bu, cl, cu); + + } + + if (tbf->qt_mask & TBF_ATTR_PEAKRATE) { + char *pru, *prbu, *bsu, *clu; + double pr, prb, bs, cl; + + pr = nl_cancel_down_bytes(tbf->qt_peakrate.rs_rate, &pru); + prb = nl_cancel_down_bits(tbf->qt_peakrate.rs_rate * 8, &prbu); + bs = nl_cancel_down_bits(tbf->qt_peakrate_bucket, &bsu); + cl = nl_cancel_down_bits(1 << tbf->qt_peakrate.rs_cell_log, + &clu); + + dp_dump_line(p, line++, " peak-rate %.2f%s/s (%.0f%s) " + "bucket-size %.1f%s cell-size %.1f%s", + "latency %.1f%s", + pr, pru, prb, prbu, bs, bsu, cl, clu); + } + +ignore: + return line; +} + +static struct nl_msg *tbf_get_opts(struct rtnl_qdisc *qdisc) +{ + struct tc_tbf_qopt opts; + struct rtnl_tbf *tbf; + struct nl_msg *msg; + uint32_t rtab[RTNL_TC_RTABLE_SIZE]; + uint32_t ptab[RTNL_TC_RTABLE_SIZE]; + int required = TBF_ATTR_RATE | TBF_ATTR_LIMIT; + + memset(&opts, 0, sizeof(opts)); + + tbf = tbf_qdisc(qdisc); + if (!tbf) + return NULL; + + if (!(tbf->qt_mask & required) != required) + return NULL; + + opts.limit = tbf->qt_limit; + opts.buffer = tbf->qt_rate_txtime; + tbf->qt_rate.rs_mpu = tbf->qt_mpu; + rtnl_rcopy_ratespec(&opts.rate, &tbf->qt_rate); + + rtnl_tc_build_rate_table(rtab, tbf->qt_mpu & 0xff, tbf->qt_mpu >> 8, + 1 << tbf->qt_rate.rs_cell_log, + tbf->qt_rate.rs_rate); + + if (tbf->qt_mask & TBF_ATTR_PEAKRATE) { + opts.mtu = tbf->qt_peakrate_txtime; + tbf->qt_peakrate.rs_mpu = tbf->qt_mpu; + rtnl_rcopy_ratespec(&opts.peakrate, &tbf->qt_peakrate); + + rtnl_tc_build_rate_table(ptab, tbf->qt_mpu & 0xff, + tbf->qt_mpu >> 8, + 1 << tbf->qt_peakrate.rs_cell_log, + tbf->qt_peakrate.rs_rate); + } + + msg = nlmsg_build_no_hdr(); + if (!msg) + goto nla_put_failure; + + NLA_PUT(msg, TCA_TBF_PARMS, sizeof(opts), &opts); + NLA_PUT(msg, TCA_TBF_RTAB, sizeof(rtab), rtab); + + if (tbf->qt_mask & TBF_ATTR_PEAKRATE) + NLA_PUT(msg, TCA_TBF_PTAB, sizeof(ptab), ptab); + + return msg; + +nla_put_failure: + nlmsg_free(msg); + return NULL; +} + +/** + * @name Attribute Access + * @{ + */ + +/** + * Set limit of TBF qdisc. + * @arg qdisc TBF qdisc to be modified. + * @arg limit New limit in bytes. + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_tbf_set_limit(struct rtnl_qdisc *qdisc, int limit) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_alloc(qdisc); + if (!tbf) + return nl_errno(ENOMEM); + + tbf->qt_limit = limit; + tbf->qt_mask |= TBF_ATTR_LIMIT; + + return 0; +} + +static inline double calc_limit(struct rtnl_ratespec *spec, int latency, + int bucket) +{ + double limit; + + limit = (double) spec->rs_rate * ((double) latency / 1000000.); + limit += bucket; + + return limit; +} + +/** + * Set limit of TBF qdisc by latency. + * @arg qdisc TBF qdisc to be modified. + * @arg latency Latency in micro seconds. + * + * Calculates and sets the limit based on the desired latency and the + * configured rate and peak rate. In order for this operation to succeed, + * the rate and if required the peak rate must have been set in advance. + * + * @f[ + * limit_n = \frac{{rate_n} \times {latency}}{10^6}+{bucketsize}_n + * @f] + * @f[ + * limit = min(limit_{rate},limit_{peak}) + * @f] + * + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_tbf_set_limit_by_latency(struct rtnl_qdisc *qdisc, int latency) +{ + struct rtnl_tbf *tbf; + double limit, limit2; + + tbf = tbf_alloc(qdisc); + if (!tbf) + return nl_errno(ENOMEM); + + if (!(tbf->qt_mask & TBF_ATTR_RATE)) + return nl_error(EINVAL, "The rate must be specified before " + "limit can be calculated based on latency."); + + limit = calc_limit(&tbf->qt_rate, latency, tbf->qt_rate_bucket); + + if (tbf->qt_mask & TBF_ATTR_PEAKRATE) { + limit2 = calc_limit(&tbf->qt_peakrate, latency, + tbf->qt_peakrate_bucket); + + if (limit2 < limit) + limit = limit2; + } + + return rtnl_qdisc_tbf_set_limit(qdisc, (int) limit); +} + +/** + * Get limit of TBF qdisc. + * @arg qdisc TBF qdisc. + * @return Limit in bytes or a negative error code. + */ +int rtnl_qdisc_tbf_get_limit(struct rtnl_qdisc *qdisc) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_qdisc(qdisc); + if (tbf && (tbf->qt_mask & TBF_ATTR_LIMIT)) + return tbf->qt_limit; + return + nl_errno(ENOENT); +} + +/** + * Set MPU of TBF qdisc. + * @arg qdisc TBF qdisc to be modified. + * @arg mpu New MPU in bytes. + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_tbf_set_mpu(struct rtnl_qdisc *qdisc, int mpu) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_alloc(qdisc); + if (!tbf) + return nl_errno(ENOMEM); + + tbf->qt_mpu = mpu; + tbf->qt_mask |= TBF_ATTR_MPU; + + return 0; +} + +/** + * Get MPU of TBF qdisc. + * @arg qdisc TBF qdisc. + * @return MPU in bytes or a negative error code. + */ +int rtnl_qdisc_tbf_get_mpu(struct rtnl_qdisc *qdisc) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_qdisc(qdisc); + if (tbf && (tbf->qt_mask & TBF_ATTR_MPU)) + return tbf->qt_mpu; + return + nl_errno(ENOENT); +} + +static inline int calc_cell_log(int cell, int bucket) +{ + if (cell > 0) + cell = rtnl_tc_calc_cell_log(cell); + else { + cell = 0; + + if (!bucket) + bucket = 2047; /* defaults to cell_log=3 */ + + while ((bucket >> cell) > 255) + cell++; + } + + return cell; +} + +/** + * Set rate of TBF qdisc. + * @arg qdisc TBF qdisc to be modified. + * @arg rate New rate in bytes per second. + * @arg bucket Size of bucket in bytes. + * @arg cell Size of a rate cell or 0 to get default value. + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_tbf_set_rate(struct rtnl_qdisc *qdisc, int rate, int bucket, + int cell) +{ + struct rtnl_tbf *tbf; + int cell_log; + + tbf = tbf_alloc(qdisc); + if (!tbf) + return nl_errno(ENOMEM); + + cell_log = calc_cell_log(cell, bucket); + if (cell_log < 0) + return cell_log; + + tbf->qt_rate.rs_rate = rate; + tbf->qt_rate_bucket = bucket; + tbf->qt_rate.rs_cell_log = cell_log; + tbf->qt_rate_txtime = rtnl_tc_calc_txtime(bucket, rate); + tbf->qt_mask |= TBF_ATTR_RATE; + + return 0; +} + +/** + * Get rate of TBF qdisc. + * @arg qdisc TBF qdisc. + * @return Rate in bytes per seconds or a negative error code. + */ +int rtnl_qdisc_tbf_get_rate(struct rtnl_qdisc *qdisc) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_qdisc(qdisc); + if (tbf && (tbf->qt_mask & TBF_ATTR_RATE)) + return tbf->qt_rate.rs_rate; + else + return -1; +} + +/** + * Get rate bucket size of TBF qdisc. + * @arg qdisc TBF qdisc. + * @return Size of rate bucket or a negative error code. + */ +int rtnl_qdisc_tbf_get_rate_bucket(struct rtnl_qdisc *qdisc) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_qdisc(qdisc); + if (tbf && (tbf->qt_mask & TBF_ATTR_RATE)) + return tbf->qt_rate_bucket; + else + return -1; +} + +/** + * Get rate cell size of TBF qdisc. + * @arg qdisc TBF qdisc. + * @return Size of rate cell in bytes or a negative error code. + */ +int rtnl_qdisc_tbf_get_rate_cell(struct rtnl_qdisc *qdisc) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_qdisc(qdisc); + if (tbf && (tbf->qt_mask & TBF_ATTR_RATE)) + return (1 << tbf->qt_rate.rs_cell_log); + else + return -1; +} + +/** + * Set peak rate of TBF qdisc. + * @arg qdisc TBF qdisc to be modified. + * @arg rate New peak rate in bytes per second. + * @arg bucket Size of peakrate bucket. + * @arg cell Size of a peakrate cell or 0 to get default value. + * @return 0 on success or a negative error code. + */ +int rtnl_qdisc_tbf_set_peakrate(struct rtnl_qdisc *qdisc, int rate, int bucket, + int cell) +{ + struct rtnl_tbf *tbf; + int cell_log; + + tbf = tbf_alloc(qdisc); + if (!tbf) + return nl_errno(ENOMEM); + + cell_log = calc_cell_log(cell, bucket); + if (cell_log < 0) + return cell_log; + + tbf->qt_peakrate.rs_rate = rate; + tbf->qt_peakrate_bucket = bucket; + tbf->qt_peakrate.rs_cell_log = cell_log; + tbf->qt_peakrate_txtime = rtnl_tc_calc_txtime(bucket, rate); + + tbf->qt_mask |= TBF_ATTR_PEAKRATE; + + return 0; +} + +/** + * Get peak rate of TBF qdisc. + * @arg qdisc TBF qdisc. + * @return Peak rate in bytes per seconds or a negative error code. + */ +int rtnl_qdisc_tbf_get_peakrate(struct rtnl_qdisc *qdisc) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_qdisc(qdisc); + if (tbf && (tbf->qt_mask & TBF_ATTR_PEAKRATE)) + return tbf->qt_peakrate.rs_rate; + else + return -1; +} + +/** + * Get peak rate bucket size of TBF qdisc. + * @arg qdisc TBF qdisc. + * @return Size of peak rate bucket or a negative error code. + */ +int rtnl_qdisc_tbf_get_peakrate_bucket(struct rtnl_qdisc *qdisc) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_qdisc(qdisc); + if (tbf && (tbf->qt_mask & TBF_ATTR_PEAKRATE)) + return tbf->qt_peakrate_bucket; + else + return -1; +} + +/** + * Get peak rate cell size of TBF qdisc. + * @arg qdisc TBF qdisc. + * @return Size of peak rate cell in bytes or a negative error code. + */ +int rtnl_qdisc_tbf_get_peakrate_cell(struct rtnl_qdisc *qdisc) +{ + struct rtnl_tbf *tbf; + + tbf = tbf_qdisc(qdisc); + if (tbf && (tbf->qt_mask & TBF_ATTR_PEAKRATE)) + return (1 << tbf->qt_peakrate.rs_cell_log); + else + return -1; +} + +/** @} */ + +static struct rtnl_qdisc_ops tbf_qdisc_ops = { + .qo_kind = "tbf", + .qo_msg_parser = tbf_msg_parser, + .qo_dump[NL_DUMP_BRIEF] = tbf_dump_brief, + .qo_dump[NL_DUMP_FULL] = tbf_dump_full, + .qo_get_opts = tbf_get_opts, +}; + +static void __init tbf_init(void) +{ + rtnl_qdisc_register(&tbf_qdisc_ops); +} + +static void __exit tbf_exit(void) +{ + rtnl_qdisc_unregister(&tbf_qdisc_ops); +} + +/** @} */ diff --git a/lib/route/tc.c b/lib/route/tc.c new file mode 100644 index 0000000..fc2069d --- /dev/null +++ b/lib/route/tc.c @@ -0,0 +1,566 @@ +/* + * lib/route/tc.c Traffic Control + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @ingroup rtnl + * @defgroup tc Traffic Control + * @brief + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include + +/** @cond SKIP */ + +static struct nla_policy tc_policy[TCA_MAX+1] = { + [TCA_KIND] = { .type = NLA_STRING, + .maxlen = TCKINDSIZ }, + [TCA_STATS] = { .minlen = sizeof(struct tc_stats) }, + [TCA_STATS2] = { .type = NLA_NESTED }, +}; + +int tca_parse(struct nlattr **tb, int maxattr, struct rtnl_tca *g, + struct nla_policy *policy) +{ + + if (g->tc_mask & TCA_ATTR_OPTS) + return nla_parse(tb, maxattr, + (struct nlattr *) g->tc_opts->d_data, + g->tc_opts->d_size, policy); + else { + /* Ugly but tb[] must be in a defined state even if no + * attributes can be found. */ + memset(tb, 0, sizeof(struct nlattr *) * (maxattr + 1)); + return 0; + } +} + +static struct nla_policy tc_stats2_policy[TCA_STATS_MAX+1] = { + [TCA_STATS_BASIC] = { .minlen = sizeof(struct gnet_stats_basic) }, + [TCA_STATS_RATE_EST] = { .minlen = sizeof(struct gnet_stats_rate_est) }, + [TCA_STATS_QUEUE] = { .minlen = sizeof(struct gnet_stats_queue) }, +}; + +int tca_msg_parser(struct nlmsghdr *n, struct rtnl_tca *g) +{ + struct nlattr *tb[TCA_MAX + 1]; + struct tcmsg *tm; + int err; + + err = nlmsg_parse(n, sizeof(*tm), tb, TCA_MAX, tc_policy); + if (err < 0) + return err; + + if (tb[TCA_KIND] == NULL) + return nl_error(EINVAL, "Missing tca kind TLV"); + + nla_strlcpy(g->tc_kind, tb[TCA_KIND], TCKINDSIZ); + + tm = nlmsg_data(n); + g->tc_family = tm->tcm_family; + g->tc_ifindex = tm->tcm_ifindex; + g->tc_handle = tm->tcm_handle; + g->tc_parent = tm->tcm_parent; + g->tc_info = tm->tcm_info; + + g->tc_mask = (TCA_ATTR_FAMILY|TCA_ATTR_IFINDEX|TCA_ATTR_HANDLE| + TCA_ATTR_PARENT|TCA_ATTR_INFO|TCA_ATTR_KIND); + + if (tb[TCA_OPTIONS]) { + g->tc_opts = nla_get_data(tb[TCA_OPTIONS]); + if (!g->tc_opts) + return nl_errno(ENOMEM); + g->tc_mask |= TCA_ATTR_OPTS; + } + + + if (tb[TCA_STATS2]) { + struct nlattr *tbs[TCA_STATS_MAX + 1]; + + err = nla_parse_nested(tbs, TCA_STATS_MAX, tb[TCA_STATS2], + tc_stats2_policy); + if (err < 0) + return err; + + if (tbs[TCA_STATS_BASIC]) { + struct gnet_stats_basic *bs; + + bs = nla_data(tbs[TCA_STATS_BASIC]); + g->tc_stats[RTNL_TC_BYTES] = bs->bytes; + g->tc_stats[RTNL_TC_PACKETS] = bs->packets; + } + + if (tbs[TCA_STATS_RATE_EST]) { + struct gnet_stats_rate_est *re; + + re = nla_data(tbs[TCA_STATS_RATE_EST]); + g->tc_stats[RTNL_TC_RATE_BPS] = re->bps; + g->tc_stats[RTNL_TC_RATE_PPS] = re->pps; + } + + if (tbs[TCA_STATS_QUEUE]) { + struct gnet_stats_queue *q; + + q = nla_data(tbs[TCA_STATS_QUEUE]); + g->tc_stats[RTNL_TC_QLEN] = q->qlen; + g->tc_stats[RTNL_TC_BACKLOG] = q->backlog; + g->tc_stats[RTNL_TC_DROPS] = q->drops; + g->tc_stats[RTNL_TC_REQUEUES] = q->requeues; + g->tc_stats[RTNL_TC_OVERLIMITS] = q->overlimits; + } + + g->tc_mask |= TCA_ATTR_STATS; + + if (tbs[TCA_STATS_APP]) { + g->tc_xstats = nla_get_data(tbs[TCA_STATS_APP]); + if (g->tc_xstats == NULL) + return -ENOMEM; + } else + goto compat_xstats; + } else { + if (tb[TCA_STATS]) { + struct tc_stats *st = nla_data(tb[TCA_STATS]); + + g->tc_stats[RTNL_TC_BYTES] = st->bytes; + g->tc_stats[RTNL_TC_PACKETS] = st->packets; + g->tc_stats[RTNL_TC_RATE_BPS] = st->bps; + g->tc_stats[RTNL_TC_RATE_PPS] = st->pps; + g->tc_stats[RTNL_TC_QLEN] = st->qlen; + g->tc_stats[RTNL_TC_BACKLOG] = st->backlog; + g->tc_stats[RTNL_TC_DROPS] = st->drops; + g->tc_stats[RTNL_TC_OVERLIMITS] = st->overlimits; + + g->tc_mask |= TCA_ATTR_STATS; + } + +compat_xstats: + if (tb[TCA_XSTATS]) { + g->tc_xstats = nla_get_data(tb[TCA_XSTATS]); + if (g->tc_xstats == NULL) + return -ENOMEM; + g->tc_mask |= TCA_ATTR_XSTATS; + } + } + + + return 0; +} + +void tca_free_data(struct rtnl_tca *tca) +{ + nl_data_free(tca->tc_opts); + nl_data_free(tca->tc_xstats); +} + +int tca_dump_brief(struct rtnl_tca *g, const char *type, + struct nl_dump_params *p, int line) +{ + char handle[32], parent[32]; + struct nl_cache *link_cache; + + link_cache = nl_cache_mngt_require("route/link"); + + dp_dump(p, "%s %s ", g->tc_kind, type); + + if (link_cache) { + char buf[32]; + dp_dump(p, "dev %s ", + rtnl_link_i2name(link_cache, g->tc_ifindex, + buf, sizeof(buf))); + } else + dp_dump(p, "dev %u ", g->tc_ifindex); + + dp_dump(p, "handle %s parent %s", + rtnl_tc_handle2str(g->tc_handle, handle, sizeof(handle)), + rtnl_tc_handle2str(g->tc_parent, parent, sizeof(parent))); + + return 1; +} + +int tca_dump_full(struct rtnl_tca *g, struct nl_dump_params *p, int line) +{ + dp_dump_line(p, line++, " "); + return line; +} + +int tca_dump_stats(struct rtnl_tca *g, struct nl_dump_params *p, int line) +{ + char *unit, fmt[64]; + float res; + strcpy(fmt, " %7.2f %s %10u %10u %10u %10u %10u\n"); + + dp_dump_line(p, line++, + " Stats: bytes packets drops overlimits" \ + " qlen backlog\n"); + + res = nl_cancel_down_bytes(g->tc_stats[RTNL_TC_BYTES], &unit); + if (*unit == 'B') + fmt[11] = '9'; + + dp_dump_line(p, line++, fmt, res, unit, + g->tc_stats[RTNL_TC_PACKETS], + g->tc_stats[RTNL_TC_DROPS], + g->tc_stats[RTNL_TC_OVERLIMITS], + g->tc_stats[RTNL_TC_QLEN], + g->tc_stats[RTNL_TC_BACKLOG]); + + res = nl_cancel_down_bytes(g->tc_stats[RTNL_TC_RATE_BPS], &unit); + + strcpy(fmt, " %7.2f %s/s%9u pps"); + + if (*unit == 'B') + fmt[11] = '9'; + + dp_dump_line(p, line++, fmt, res, unit, g->tc_stats[RTNL_TC_RATE_PPS]); + + return line; +} + +int tca_filter(struct rtnl_tca *o, struct rtnl_tca *f) +{ +#define REQ(F) (f->tc_mask & TCA_ATTR_##F) +#define AVAIL(F) (o->tc_mask & TCA_ATTR_##F) +#define _O(F, EXPR) (REQ(F) && (!AVAIL(F) || (EXPR))) +#define _C(F, N) (REQ(F) && (!AVAIL(F) || (o->N != f->N))) + if (_C(HANDLE, tc_handle) || + _C(PARENT, tc_parent) || + _C(IFINDEX, tc_ifindex) || + _O(KIND, strcmp(o->tc_kind, f->tc_kind))) + return 0; +#undef REQ +#undef AVAIL +#undef _O +#undef _C + + return 1; +} + +void tca_set_ifindex(struct rtnl_tca *t, int ifindex) +{ + t->tc_ifindex = ifindex; + t->tc_mask |= TCA_ATTR_IFINDEX; +} + +int tca_get_ifindex(struct rtnl_tca *t) +{ + if (t->tc_mask & TCA_ATTR_IFINDEX) + return t->tc_ifindex; + else + return RTNL_LINK_NOT_FOUND; +} + +void tca_set_handle(struct rtnl_tca *t, uint32_t handle) +{ + t->tc_handle = handle; + t->tc_mask |= TCA_ATTR_HANDLE; +} + +uint32_t tca_get_handle(struct rtnl_tca *t) +{ + if (t->tc_mask & TCA_ATTR_HANDLE) + return t->tc_handle; + else + return 0; +} + +void tca_set_parent(struct rtnl_tca *t, uint32_t parent) +{ + t->tc_parent = parent; + t->tc_mask |= TCA_ATTR_PARENT; +} + +uint32_t tca_get_parent(struct rtnl_tca *t) +{ + if (t->tc_mask & TCA_ATTR_PARENT) + return t->tc_parent; + else + return 0; +} + +void tca_set_kind(struct rtnl_tca *t, const char *kind) +{ + strncpy(t->tc_kind, kind, sizeof(t->tc_kind) - 1); + t->tc_mask |= TCA_ATTR_KIND; +} + +char *tca_get_kind(struct rtnl_tca *t) +{ + if (t->tc_mask & TCA_ATTR_KIND) + return t->tc_kind; + else + return NULL; +} + +uint64_t tca_get_stat(struct rtnl_tca *t, int id) +{ + if (id < 0 || id > RTNL_TC_STATS_MAX) + return 0; + + return t->tc_stats[id]; +} + +struct nl_msg *tca_build_msg(struct rtnl_tca *tca, int type, int flags) +{ + struct nl_msg *msg; + struct tcmsg tchdr = { + .tcm_family = AF_UNSPEC, + .tcm_ifindex = tca->tc_ifindex, + .tcm_handle = tca->tc_handle, + .tcm_parent = tca->tc_parent, + }; + + msg = nlmsg_build_simple(type, flags); + if (!msg) + goto nla_put_failure; + + if (nlmsg_append(msg, &tchdr, sizeof(tchdr), 1) < 0) + goto nla_put_failure; + + if (tca->tc_mask & TCA_ATTR_KIND) + NLA_PUT_STRING(msg, TCA_KIND, tca->tc_kind); + + return msg; + +nla_put_failure: + nlmsg_free(msg); + return NULL; +} + +/** @endcond */ + +/** + * @name Utilities + * @{ + */ + +/** + * Calculate time required to transmit buffer at a specific rate + * @arg bufsize Size of buffer to be transmited in bytes. + * @arg rate Transmit rate in bytes per second. + * + * Calculates the number of micro seconds required to transmit a + * specific buffer at a specific transmit rate. + * + * @f[ + * txtime=\frac{bufsize}{rate}10^6 + * @f] + * + * @return Required transmit time in micro seconds. + */ +int rtnl_tc_calc_txtime(int bufsize, int rate) +{ + double tx_time_secs; + + tx_time_secs = (double) bufsize / (double) rate; + + return tx_time_secs * 1000000.; +} + +/** + * Calculate buffer size able to transmit in a specific time and rate. + * @arg txtime Available transmit time in micro seconds. + * @arg rate Transmit rate in bytes per second. + * + * Calculates the size of the buffer that can be transmitted in a + * specific time period at a specific transmit rate. + * + * @f[ + * bufsize=\frac{{txtime} \times {rate}}{10^6} + * @f] + * + * @return Size of buffer in bytes. + */ +int rtnl_tc_calc_bufsize(int txtime, int rate) +{ + double bufsize; + + bufsize = (double) txtime * (double) rate; + + return bufsize / 1000000.; +} + +/** + * Calculate the binary logarithm for a specific cell size + * @arg cell_size Size of cell, must be a power of two. + * @return Binary logirhtm of cell size or a negative error code. + */ +int rtnl_tc_calc_cell_log(int cell_size) +{ + int i; + + for (i = 0; i < 32; i++) + if ((1 << i) == cell_size) + return i; + + return nl_errno(EINVAL); +} + + +/** @} */ + +/** + * @name Rate Tables + * @{ + */ + +/** + * Compute a transmission time lookup table + * @arg dst Destination buffer of RTNL_TC_RTABLE_SIZE uint32_t[]. + * @arg mpu Minimal size of a packet at all times. + * @arg overhead Overhead to be added to each packet. + * @arg cell Size of cell, i.e. size of step between entries in bytes. + * @arg rate Rate in bytes per second. + * + * Computes a table of RTNL_TC_RTABLE_SIZE entries specyfing the + * transmission times for various packet sizes, e.g. the transmission + * time for a packet of size \c pktsize could be looked up: + * @code + * txtime = table[pktsize >> log2(cell)]; + * @endcode + */ +int rtnl_tc_build_rate_table(uint32_t *dst, uint8_t mpu, uint8_t overhead, + int cell, int rate) +{ + int i, size, cell_log; + + cell_log = rtnl_tc_calc_cell_log(cell); + if (cell_log < 0) + return cell_log; + + for (i = 0; i < RTNL_TC_RTABLE_SIZE; i++) { + size = (i << cell_log) + overhead; + if (size < mpu) + size = mpu; + + dst[i] = rtnl_tc_calc_txtime(size, rate); + } + + return 0; +} + +/** @} */ + +/** + * @name Traffic Control Handle Translations + * @{ + */ + +/** + * Convert a traffic control handle to a character string (Reentrant). + * @arg handle traffic control handle + * @arg buf destination buffer + * @arg len buffer length + * + * Converts a tarffic control handle to a character string in the + * form of \c MAJ:MIN and stores it in the specified destination buffer. + * + * @return The destination buffer or the type encoded in hexidecimal + * form if no match was found. + */ +char * rtnl_tc_handle2str(uint32_t handle, char *buf, size_t len) +{ + if (TC_H_ROOT == handle) + snprintf(buf, len, "root"); + else if (TC_H_UNSPEC == handle) + snprintf(buf, len, "none"); + else if (0 == TC_H_MAJ(handle)) + snprintf(buf, len, ":%02x", TC_H_MIN(handle)); + else if (0 == TC_H_MIN(handle)) + snprintf(buf, len, "%02x:", TC_H_MAJ(handle) >> 16); + else + snprintf(buf, len, "%02x:%02x", + TC_H_MAJ(handle) >> 16, TC_H_MIN(handle)); + + return buf; +} + +/** + * Convert a charactering strint to a traffic control handle + * @arg name traffic control handle as character string + * @arg res destination buffer + * + * Converts the provided character string specifying a traffic + * control handle to the corresponding numeric value. + * + * The handle must be provided in one of the following formats: + * - root + * - none + * - XXXX: + * - :YYYY + * - XXXX:YYYY + * - XXXXYYYY + * + * @return 0 on success or a negative error code + */ +int rtnl_tc_str2handle(const char *name, uint32_t *res) +{ + char *colon, *end; + uint32_t h; + + if (!strcasecmp(name, "root")) { + *res = TC_H_ROOT; + return 0; + } + + if (!strcasecmp(name, "none")) { + *res = TC_H_UNSPEC; + return 0; + } + + h = strtoul(name, &colon, 16); + + if (colon == name) { + /* :YYYY */ + h = 0; + if (':' != *colon) + return -EINVAL; + } + + if (':' == *colon) { + /* check if we would lose bits */ + if (TC_H_MAJ(h)) + return -ERANGE; + h <<= 16; + + if ('\0' == colon[1]) { + /* XXXX: */ + *res = h; + } else { + /* XXXX:YYYY */ + uint32_t l = strtoul(colon+1, &end, 16); + + /* check if we overlap with major part */ + if (TC_H_MAJ(l)) + return -ERANGE; + + if ('\0' != *end) + return -EINVAL; + + *res = (h | l); + } + } else if ('\0' == *colon) { + /* XXXXYYYY */ + *res = h; + } else + return -EINVAL; + + return 0; +} + +/** @} */ + +/** @} */ diff --git a/lib/utils.c b/lib/utils.c new file mode 100644 index 0000000..9055828 --- /dev/null +++ b/lib/utils.c @@ -0,0 +1,635 @@ +/* + * lib/utils.c Utility Functions + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +/** + * @defgroup utils Utilities + * @{ + */ + +#include +#include +#include +#include + +/** + * Debug level + */ +int nl_debug = 0; + +/** + * @name Error Code Helpers + * @{ + */ + +static char *errbuf; +static int nlerrno; + +/** @cond SKIP */ +int __nl_error(int err, const char *file, unsigned int line, const char *func, + const char *fmt, ...) +{ + char *user_err; + va_list args; + + if (errbuf) { + free(errbuf); + errbuf = NULL; + } + + nlerrno = err; + + if (fmt) { + va_start(args, fmt); + vasprintf(&user_err, fmt, args); + va_end(args); + } + +#ifdef VERBOSE_ERRORS + asprintf(&errbuf, "%s:%u:%s: %s (errno = %s)", + file, line, func, fmt ? user_err : "", strerror(err)); +#else + asprintf(&errbuf, "%s (errno = %s)", + fmt ? user_err : "", strerror(err)); +#endif + + if (fmt) + free(user_err); + + return -err; +} + +int nl_get_errno(void) +{ + return nlerrno; +} + +/** @endcond */ + +/** + * Return error message for an error code + * @return error message + */ +char *nl_geterror(void) +{ + if (errbuf) + return errbuf; + + if (nlerrno) + return strerror(nlerrno); + + return "Sucess\n"; +} + +/** @} */ + +/** + * @name Unit Pretty-Printing + * @{ + */ + +/** + * Cancel down a byte counter + * @arg l byte counter + * @arg unit destination unit pointer + * + * Cancels down a byte counter until it reaches a reasonable + * unit. The chosen unit is assigned to \a unit. + * + * @return The cancelled down byte counter in the new unit. + */ +double nl_cancel_down_bytes(unsigned long long l, char **unit) +{ + if (l >= 1099511627776LL) { + *unit = "TiB"; + return ((double) l) / 1099511627776LL; + } else if (l >= 1073741824) { + *unit = "GiB"; + return ((double) l) / 1073741824; + } else if (l >= 1048576) { + *unit = "MiB"; + return ((double) l) / 1048576; + } else if (l >= 1024) { + *unit = "KiB"; + return ((double) l) / 1024; + } else { + *unit = "B"; + return (double) l; + } +} + +/** + * Cancel down a bit counter + * @arg l bit counter + * @arg unit destination unit pointer + * + * Cancels downa bit counter until it reaches a reasonable + * unit. The chosen unit is assigned to \a unit. + * + * @return The cancelled down bit counter in the new unit. + */ +double nl_cancel_down_bits(unsigned long long l, char **unit) +{ + if (l >= 1099511627776ULL) { + *unit = "Tbit"; + return ((double) l) / 1099511627776ULL; + } else if (l >= 1073741824) { + *unit = "Gbit"; + return ((double) l) / 1073741824; + } else if (l >= 1048576) { + *unit = "Mbit"; + return ((double) l) / 1048576; + } else if (l >= 1024) { + *unit = "Kbit"; + return ((double) l) / 1024; + } else { + *unit = "bit"; + return (double) l; + } + +} + +/** + * Cancel down a micro second value + * @arg l micro seconds + * @arg unit destination unit pointer + * + * Cancels down a microsecond counter until it reaches a + * reasonable unit. The chosen unit is assigned to \a unit. + * + * @return The cancelled down microsecond in the new unit + */ +double nl_cancel_down_us(uint32_t l, char **unit) +{ + if (l >= 1000000) { + *unit = "s"; + return ((double) l) / 1000000; + } else if (l >= 1000) { + *unit = "ms"; + return ((double) l) / 1000; + } else { + *unit = "us"; + return (double) l; + } +} + +/** @} */ + +/** + * @name Generic Unit Translations + * @{ + */ + +/** + * Convert a character string to a size + * @arg str size encoded as character string + * + * Converts the specified size as character to the corresponding + * number of bytes. + * + * Supported formats are: + * - b,kb/k,m/mb,gb/g for bytes + * - bit,kbit/mbit/gbit + * + * @return The number of bytes or -1 if the string is unparseable + */ +long nl_size2int(const char *str) +{ + char *p; + long l = strtol(str, &p, 0); + if (p == str) + return -1; + + if (*p) { + if (!strcasecmp(p, "kb") || !strcasecmp(p, "k")) + l *= 1024; + else if (!strcasecmp(p, "gb") || !strcasecmp(p, "g")) + l *= 1024*1024*1024; + else if (!strcasecmp(p, "gbit")) + l *= 1024*1024*1024/8; + else if (!strcasecmp(p, "mb") || !strcasecmp(p, "m")) + l *= 1024*1024; + else if (!strcasecmp(p, "mbit")) + l *= 1024*1024/8; + else if (!strcasecmp(p, "kbit")) + l *= 1024/8; + else if (!strcasecmp(p, "bit")) + l /= 8; + else if (strcasecmp(p, "b") != 0) + return -1; + } + + return l; +} + +/** + * Convert a character string to a probability + * @arg str probability encoded as character string + * + * Converts the specified probability as character to the + * corresponding probability number. + * + * Supported formats are: + * - 0.0-1.0 + * - 0%-100% + * + * @return The probability relative to NL_PROB_MIN and NL_PROB_MAX + */ +long nl_prob2int(const char *str) +{ + char *p; + double d = strtod(str, &p); + + if (p == str) + return -1; + + if (d > 1.0) + d /= 100.0f; + + if (d > 1.0f || d < 0.0f) + return -1; + + if (*p && strcmp(p, "%") != 0) + return -1; + + return rint(d * NL_PROB_MAX); +} + +/** @} */ + +/** + * @name Time Translations + * @{ + */ + +#ifdef USER_HZ +static uint32_t user_hz = USER_HZ; +#else +static uint32_t user_hz = 100; +#endif + +static double ticks_per_usec = 1.0f; + +/* Retrieves the configured HZ and ticks/us value in the kernel. + * The value is cached. Supported ways of getting it: + * + * 1) environment variable + * 2) /proc/net/psched and sysconf + * + * Supports the environment variables: + * PROC_NET_PSCHED - may point to psched file in /proc + * PROC_ROOT - may point to /proc fs */ +static void __init get_psched_settings(void) +{ + char name[FILENAME_MAX]; + FILE *fd; + int got_hz = 0, got_tick = 0; + + if (getenv("HZ")) { + long hz = strtol(getenv("HZ"), NULL, 0); + + if (LONG_MIN != hz && LONG_MAX != hz) { + user_hz = hz; + got_hz = 1; + } + } + + if (!got_hz) + user_hz = sysconf(_SC_CLK_TCK); + + if (getenv("TICKS_PER_USEC")) { + double t = strtod(getenv("TICKS_PER_USEC"), NULL); + + ticks_per_usec = t; + got_tick = 1; + } + + + if (getenv("PROC_NET_PSCHED")) + snprintf(name, sizeof(name), "%s", getenv("PROC_NET_PSCHED")); + else if (getenv("PROC_ROOT")) + snprintf(name, sizeof(name), "%s/net/psched", + getenv("PROC_ROOT")); + else + strncpy(name, "/proc/net/psched", sizeof(name) - 1); + + if ((fd = fopen(name, "r"))) { + uint32_t tick, us, nom; + int r = fscanf(fd, "%08x%08x%08x%*08x", &tick, &us, &nom); + + if (4 == r && nom == 1000000 && !got_tick) + ticks_per_usec = (double)tick/(double)us; + + fclose(fd); + } +} + + +/** + * Return the value of HZ + */ +int nl_get_hz(void) +{ + return user_hz; +} + + +/** + * Convert micro seconds to ticks + * @arg us micro seconds + * @return number of ticks + */ +uint32_t nl_us2ticks(uint32_t us) +{ + return us * ticks_per_usec; +} + + +/** + * Convert ticks to micro seconds + * @arg ticks number of ticks + * @return microseconds + */ +uint32_t nl_ticks2us(uint32_t ticks) +{ + return ticks / ticks_per_usec; +} + +long nl_time2int(const char *str) +{ + char *p; + long l = strtol(str, &p, 0); + if (p == str) + return -1; + + if (*p) { + if (!strcasecmp(p, "min") == 0 || !strcasecmp(p, "m")) + l *= 60; + else if (!strcasecmp(p, "hour") || !strcasecmp(p, "h")) + l *= 60*60; + else if (!strcasecmp(p, "day") || !strcasecmp(p, "d")) + l *= 60*60*24; + else if (strcasecmp(p, "s") != 0) + return -1; + } + + return l; +} + +/** + * Convert milliseconds to a character string + * @arg msec number of milliseconds + * @arg buf destination buffer + * @arg len buffer length + * + * Converts milliseconds to a character string split up in days, hours, + * minutes, seconds, and milliseconds and stores it in the specified + * destination buffer. + * + * @return The destination buffer. + */ +char * nl_msec2str(uint64_t msec, char *buf, size_t len) +{ + int i, split[5]; + char *units[] = {"d", "h", "m", "s", "msec"}; + +#define _SPLIT(idx, unit) if ((split[idx] = msec / unit) > 0) msec %= unit + _SPLIT(0, 86400000); /* days */ + _SPLIT(1, 3600000); /* hours */ + _SPLIT(2, 60000); /* minutes */ + _SPLIT(3, 1000); /* seconds */ +#undef _SPLIT + split[4] = msec; + + memset(buf, 0, len); + + for (i = 0; i < ARRAY_SIZE(split); i++) { + if (split[i] > 0) { + char t[64]; + snprintf(t, sizeof(t), "%s%d%s", + strlen(buf) ? " " : "", split[i], units[i]); + strncat(buf, t, len - strlen(buf) - 1); + } + } + + return buf; +} + +/** @} */ + +/** + * @name Link Layer Protocol Translations + * @{ + */ + +static struct trans_tbl llprotos[] = { + {0, "generic"}, + __ADD(ARPHRD_ETHER,ether) + __ADD(ARPHRD_EETHER,eether) + __ADD(ARPHRD_AX25,ax25) + __ADD(ARPHRD_PRONET,pronet) + __ADD(ARPHRD_CHAOS,chaos) + __ADD(ARPHRD_IEEE802,ieee802) + __ADD(ARPHRD_ARCNET,arcnet) + __ADD(ARPHRD_APPLETLK,atalk) + __ADD(ARPHRD_DLCI,dlci) + __ADD(ARPHRD_ATM,atm) + __ADD(ARPHRD_METRICOM,metricom) + __ADD(ARPHRD_IEEE1394,ieee1394) +#ifdef ARPHRD_EUI64 + __ADD(ARPHRD_EUI64,eui64) +#endif + __ADD(ARPHRD_INFINIBAND,infiniband) + __ADD(ARPHRD_SLIP,slip) + __ADD(ARPHRD_CSLIP,cslip) + __ADD(ARPHRD_SLIP6,slip6) + __ADD(ARPHRD_CSLIP6,cslip6) + __ADD(ARPHRD_RSRVD,rsrvd) + __ADD(ARPHRD_ADAPT,adapt) + __ADD(ARPHRD_ROSE,rose) + __ADD(ARPHRD_X25,x25) +#ifdef ARPHRD_HWX25 + __ADD(ARPHRD_HWX25,hwx25) +#endif + __ADD(ARPHRD_PPP,ppp) + __ADD(ARPHRD_HDLC,hdlc) + __ADD(ARPHRD_LAPB,lapb) + __ADD(ARPHRD_DDCMP,ddcmp) + __ADD(ARPHRD_RAWHDLC,rawhdlc) + __ADD(ARPHRD_TUNNEL,ipip) + __ADD(ARPHRD_TUNNEL6,tunnel6) + __ADD(ARPHRD_FRAD,frad) + __ADD(ARPHRD_SKIP,skip) + __ADD(ARPHRD_LOOPBACK,loopback) + __ADD(ARPHRD_LOCALTLK,localtlk) + __ADD(ARPHRD_FDDI,fddi) + __ADD(ARPHRD_BIF,bif) + __ADD(ARPHRD_SIT,sit) + __ADD(ARPHRD_IPDDP,ip/ddp) + __ADD(ARPHRD_IPGRE,gre) + __ADD(ARPHRD_PIMREG,pimreg) + __ADD(ARPHRD_HIPPI,hippi) + __ADD(ARPHRD_ASH,ash) + __ADD(ARPHRD_ECONET,econet) + __ADD(ARPHRD_IRDA,irda) + __ADD(ARPHRD_FCPP,fcpp) + __ADD(ARPHRD_FCAL,fcal) + __ADD(ARPHRD_FCPL,fcpl) + __ADD(ARPHRD_FCFABRIC,fcfb_0) + __ADD(ARPHRD_FCFABRIC+1,fcfb_1) + __ADD(ARPHRD_FCFABRIC+2,fcfb_2) + __ADD(ARPHRD_FCFABRIC+3,fcfb_3) + __ADD(ARPHRD_FCFABRIC+4,fcfb_4) + __ADD(ARPHRD_FCFABRIC+5,fcfb_5) + __ADD(ARPHRD_FCFABRIC+6,fcfb_6) + __ADD(ARPHRD_FCFABRIC+7,fcfb_7) + __ADD(ARPHRD_FCFABRIC+8,fcfb_8) + __ADD(ARPHRD_FCFABRIC+9,fcfb_9) + __ADD(ARPHRD_FCFABRIC+10,fcfb_10) + __ADD(ARPHRD_FCFABRIC+11,fcfb_11) + __ADD(ARPHRD_FCFABRIC+12,fcfb_12) + __ADD(ARPHRD_IEEE802_TR,tr) + __ADD(ARPHRD_IEEE80211,ieee802.11) +#ifdef ARPHRD_IEEE80211_PRISM + __ADD(ARPHRD_IEEE80211_PRISM, ieee802.11_prism) +#endif +#ifdef ARPHRD_VOID + __ADD(ARPHRD_VOID,void) +#endif +}; + +/** + * Convert a link layer protocol to a character string (Reentrant). + * @arg llproto link layer protocol + * @arg buf destination buffer + * @arg len buffer length + * + * Converts a link layer protocol to a character string and stores + * it in the specified destination buffer. + * + * @return The destination buffer or the type encoded in hexidecimal + * form if no match was found. + */ +char * nl_llproto2str(int llproto, char *buf, size_t len) +{ + return __type2str(llproto, buf, len, llprotos, ARRAY_SIZE(llprotos)); +} + +/** + * Convert a character string to a link layer protocol + * @arg name name of link layer protocol + * + * Converts the provided character string specifying a link layer + * protocl to the corresponding numeric value. + * + * @return link layer protocol or a negative value if none was found. + */ +int nl_str2llproto(const char *name) +{ + return __str2type(name, llprotos, ARRAY_SIZE(llprotos)); +} + +/** @} */ + + +/** + * @name Ethernet Protocol Translations + * @{ + */ + +static struct trans_tbl ether_protos[] = { + __ADD(ETH_P_LOOP,loop) + __ADD(ETH_P_PUP,pup) + __ADD(ETH_P_PUPAT,pupat) + __ADD(ETH_P_IP,ip) + __ADD(ETH_P_X25,x25) + __ADD(ETH_P_ARP,arp) + __ADD(ETH_P_BPQ,bpq) + __ADD(ETH_P_IEEEPUP,ieeepup) + __ADD(ETH_P_IEEEPUPAT,ieeepupat) + __ADD(ETH_P_DEC,dec) + __ADD(ETH_P_DNA_DL,dna_dl) + __ADD(ETH_P_DNA_RC,dna_rc) + __ADD(ETH_P_DNA_RT,dna_rt) + __ADD(ETH_P_LAT,lat) + __ADD(ETH_P_DIAG,diag) + __ADD(ETH_P_CUST,cust) + __ADD(ETH_P_SCA,sca) + __ADD(ETH_P_RARP,rarp) + __ADD(ETH_P_ATALK,atalk) + __ADD(ETH_P_AARP,aarp) +#ifdef ETH_P_8021Q + __ADD(ETH_P_8021Q,802.1q) +#endif + __ADD(ETH_P_IPX,ipx) + __ADD(ETH_P_IPV6,ipv6) +#ifdef ETH_P_WCCP + __ADD(ETH_P_WCCP,wccp) +#endif + __ADD(ETH_P_PPP_DISC,ppp_disc) + __ADD(ETH_P_PPP_SES,ppp_ses) + __ADD(ETH_P_MPLS_UC,mpls_uc) + __ADD(ETH_P_MPLS_MC,mpls_mc) + __ADD(ETH_P_ATMMPOA,atmmpoa) + __ADD(ETH_P_ATMFATE,atmfate) + __ADD(ETH_P_EDP2,edp2) + __ADD(ETH_P_802_3,802.3) + __ADD(ETH_P_AX25,ax25) + __ADD(ETH_P_ALL,all) + __ADD(ETH_P_802_2,802.2) + __ADD(ETH_P_SNAP,snap) + __ADD(ETH_P_DDCMP,ddcmp) + __ADD(ETH_P_WAN_PPP,wan_ppp) + __ADD(ETH_P_PPP_MP,ppp_mp) + __ADD(ETH_P_LOCALTALK,localtalk) + __ADD(ETH_P_PPPTALK,ppptalk) + __ADD(ETH_P_TR_802_2,tr_802.2) + __ADD(ETH_P_MOBITEX,mobitex) + __ADD(ETH_P_CONTROL,control) + __ADD(ETH_P_IRDA,irda) + __ADD(ETH_P_ECONET,econet) + __ADD(ETH_P_HDLC,hdlc) +}; + +/** + * Convert a ethernet protocol to a character string (Reentrant). + * @arg eproto ethernet protocol + * @arg buf destination buffer + * @arg len buffer length + * + * Converts a ethernet protocol to a character string and stores + * it in the specified destination buffer. + * + * @return The destination buffer or the type encoded in hexidecimal + * form if no match was found. + */ +char *nl_ether_proto2str(int eproto, char *buf, size_t len) +{ + return __type2str(eproto, buf, len, ether_protos, + ARRAY_SIZE(ether_protos)); +} + +/** + * Convert a character string to a ethernet protocol + * @arg name name of ethernet protocol + * + * Converts the provided character string specifying a ethernet + * protocl to the corresponding numeric value. + * + * @return ethernet protocol or a negative value if none was found. + */ +int nl_str2ether_proto(const char *name) +{ + return __str2type(name, ether_protos, ARRAY_SIZE(ether_protos)); +} + +/** @} */ + +/** @} */ diff --git a/libnl-1.pc b/libnl-1.pc new file mode 100644 index 0000000..edd2abe --- /dev/null +++ b/libnl-1.pc @@ -0,0 +1,10 @@ +prefix=/usr/local +exec_prefix=/usr/local +libdir=${exec_prefix}/lib +includedir=/usr/local/include + +Name: libnl +Description: Convenience library for netlink sockets +Version: 1.0-pre6 +Libs: -L${libdir} -lnl +Cflags: diff --git a/libnl-1.pc.in b/libnl-1.pc.in new file mode 100644 index 0000000..7ac8413 --- /dev/null +++ b/libnl-1.pc.in @@ -0,0 +1,10 @@ +prefix=@prefix@ +exec_prefix=@prefix@ +libdir=@libdir@ +includedir=@prefix@/include + +Name: libnl +Description: Convenience library for netlink sockets +Version: @PACKAGE_VERSION@ +Libs: -L${libdir} -lnl +Cflags: diff --git a/libnl.spec b/libnl.spec new file mode 100644 index 0000000..c4632c2 --- /dev/null +++ b/libnl.spec @@ -0,0 +1,138 @@ +%define preversion pre6 + +Summary: Convenience library for kernel netlink sockets +Group: Development/Libraries +License: LGPL +Name: libnl +Version: 1.0 +Release: 0.11.%{preversion} +URL: http://people.suug.ch/~tgr/libnl/ +Source: http://people.suug.ch/~tgr/libnl/files/libnl-%{version}-%{preversion}.tar.gz +BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root +BuildRequires: doxygen +#Patch3: libnl-1.0-pre6-static.patch +#Patch4: libnl-1.0-pre5-__u64_x86_64.patch +#Patch5: libnl-1.0-pre6-debuginfo.patch + +%description +This package contains a convenience library to simplify +using the Linux kernel's netlink sockets interface for +network manipulation + +%package devel +Summary: Libraries and headers for using libnl +Group: Development/Libraries +Requires: %{name} = %{version}-%{release} + +%description devel +This package contains various headers for using libnl + + +%prep +%setup -q -n libnl-%{version}-%{preversion} +#%patch3 -p1 +#%patch4 -p1 +#%patch5 -p1 + +%build +%configure +make + +%install +%{__rm} -rf $RPM_BUILD_ROOT +make install DESTDIR=$RPM_BUILD_ROOT + +%{__mkdir_p} $RPM_BUILD_ROOT%{_libdir}/pkgconfig/ +cat >libnl-1.pc < - 1.0-0.11.pre6 +- Upgrade to pre6 + +* Mon Aug 14 2006 Peter Jones - 1.0-0.10.pre5.4 +- Fix nl_recv() for ppc64 + +* Mon Jul 31 2006 Jeremy Katz - 1.0-0.10.pre5.3 +- unbreak the pkgconfig file + +* Wed Jul 26 2006 Matthias Clasen - 1.0-0.10.pre5.2 +- Fix the pkgconfig file on 64-bit systems (#197176) + +* Wed Jul 12 2006 Jesse Keating - 1.0-0.10.pre5.1 +- rebuild + +* Thu Jun 15 2006 Peter Jones 1.0-0.10.pre5 +- Fix debuginfo generation. + +* Fri May 26 2006 Jason Vas Dias 1.0-0.9.pre5 +- Allow build to succeed with new gcc / glibc-kernheaders + (compile failed on __u64 redefinition on x86_64). +- Add a static %{_libdir}/libnl.a library to libnl-devel for + programs that might need to do a static link to libnl. + Added after consultation with Christopher Aillon. + +* Tue Feb 12 2006 Christopher Aillon 1.0-0.8.pre5 +- Rebuild + +* Tue Feb 07 2006 Jesse Keating 1.0-0.7.pre5.1 +- rebuilt for new gcc4.1 snapshot and glibc changes + +* Mon Jan 16 2006 Christopher Aillon 1.0-0.7.pre5 +- Add patch to not chown files to root.root during make install; it + happens normally. + +* Mon Jan 9 2006 Christopher Aillon 1.0-0.6.pre5 +- Correctly install the pkgconfig file + +* Fri Dec 09 2005 Jesse Keating +- rebuilt + +* Wed Nov 2 2005 Christopher Aillon 1.0-0.5.pre5 +- Fix 64bit LIBDIR issue; use $LIBDIR instead of $PREFIX/lib + +* Wed Nov 2 2005 Christopher Aillon 1.0-0.4.pre5 +- Update to 1.0-pre5 + +* Tue Nov 1 2005 Christopher Aillon 1.0-0.3.pre4 +- Update to 1.0-pre4 + +* Tue Nov 1 2005 Christopher Aillon 1.0-0.2.pre3 +- Minor specfile cleanup + +* Thu Oct 27 2005 Dan Williams 1.0-0.1.pre3 +- Split into main and devel packages + +* Thu Oct 27 2005 Dan Williams 1.0-0.0.pre3 +- initial build diff --git a/src/Makefile b/src/Makefile new file mode 100644 index 0000000..795c3ce --- /dev/null +++ b/src/Makefile @@ -0,0 +1,33 @@ +# +# src/Makefile +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation version 2.1 +# of the License. +# +# Copyright (c) 2003-2006 Thomas Graf +# + +ifeq ($(shell [ ! -r ../Makefile.opts ] && echo 1),) + include ../Makefile.opts +endif + +CFLAGS += -L../lib +CIN := $(wildcard nl-*.c) +TOOLS := $(CIN:%.c=%) + +all: $(TOOLS) + +$(TOOLS): utils.o + +nl-%: nl-%.c + $(CC) $(CFLAGS) -o $@ $< -lnl utils.o + +clean: + rm -f $(TOOLS) utils.o + +distclean: clean + +install: + @true diff --git a/src/f_addr.c b/src/f_addr.c new file mode 100644 index 0000000..491d88f --- /dev/null +++ b/src/f_addr.c @@ -0,0 +1,107 @@ +/* + * src/f_addr.c Address Filter + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +static void get_filter(struct rtnl_addr *addr, int argc, char **argv, int idx, + struct nl_cache *link_cache) +{ + struct nl_addr *a; + + while (argc > idx) { + if (arg_match("dev")) { + if (argc > ++idx) { + int ifindex = rtnl_link_name2i(link_cache, argv[idx++]); + if (ifindex == RTNL_LINK_NOT_FOUND) + goto err_notfound; + rtnl_addr_set_ifindex(addr, ifindex); + } + } else if (arg_match("family")) { + if (argc > ++idx) { + int family = nl_str2af(argv[idx++]); + if (family == AF_UNSPEC) + goto err_invaf; + rtnl_addr_set_family(addr, family); + } + } else if (arg_match("label")) { + if (argc > ++idx) + rtnl_addr_set_label(addr, argv[idx++]); + } else if (arg_match("scope")) { + if (argc > ++idx) { + int scope = rtnl_str2scope(argv[idx++]); + if (scope < 0) + goto err_invscope; + rtnl_addr_set_scope(addr, scope); + } + } else if (arg_match("local")) { + if (argc > ++idx) { + a = nl_addr_parse(argv[idx++], + rtnl_addr_get_family(addr)); + if (!a) + goto err_invaddr; + rtnl_addr_set_local(addr, a); + nl_addr_put(a); + } + } else if (arg_match("peer")) { + if (argc > ++idx) { + a = nl_addr_parse(argv[idx++], + rtnl_addr_get_family(addr)); + if (!a) + goto err_invaddr; + rtnl_addr_set_peer(addr, a); + nl_addr_put(a); + } + } else if (arg_match("broadcast")) { + if (argc > ++idx) { + a = nl_addr_parse(argv[idx++], + rtnl_addr_get_family(addr)); + if (!a) + goto err_invaddr; + rtnl_addr_set_broadcast(addr, a); + nl_addr_put(a); + } + } else if (arg_match("multicast")) { + if (argc > ++idx) { + a = nl_addr_parse(argv[idx++], + rtnl_addr_get_family(addr)); + if (!a) + goto err_invaddr; + rtnl_addr_set_multicast(addr, a); + nl_addr_put(a); + } + } else if (arg_match("anycast")) { + if (argc > ++idx) { + a = nl_addr_parse(argv[idx++], + rtnl_addr_get_family(addr)); + if (!a) + goto err_invaddr; + rtnl_addr_set_anycast(addr, a); + nl_addr_put(a); + } + } else { + fprintf(stderr, "What is '%s'?\n", argv[idx]); + exit(1); + } + } + + return; + +err_notfound: + fprintf(stderr, "Unknown link %s\n", argv[idx-1]); + exit(1); +err_invscope: + fprintf(stderr, "Invalid scope name \"%s\".\n", argv[idx-1]); + exit(1); +err_invaf: + fprintf(stderr, "Invalid address family \"%s\"\n", argv[idx-1]); + exit(1); +err_invaddr: + fprintf(stderr, "Invalid address \"%s\": %s\n", argv[idx-1], nl_geterror()); + exit(1); +} diff --git a/src/f_link.c b/src/f_link.c new file mode 100644 index 0000000..3c1cb93 --- /dev/null +++ b/src/f_link.c @@ -0,0 +1,106 @@ +/* + * src/f_link.c Link Filter + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include + +static void get_filter(struct rtnl_link *l, int ac, char **av, int idx, + struct nl_cache *cache) +{ + while (ac > idx) { + if (!strcasecmp(av[idx], "dev")) { + if (ac > ++idx) { + int ifindex = rtnl_link_name2i(cache, av[idx++]); + if (ifindex == RTNL_LINK_NOT_FOUND) + goto err_notfound; + rtnl_link_set_ifindex(l, ifindex); + } + } else if (!strcasecmp(av[idx], "mtu")) { + if (ac > ++idx) + rtnl_link_set_mtu(l, strtoul(av[idx++], NULL, 0)); + } else if (!strcasecmp(av[idx], "txqlen")) { + if (ac > ++idx) + rtnl_link_set_txqlen(l, strtoul(av[idx++], NULL, 0)); + } else if (!strcasecmp(av[idx], "weight")) { + if (ac > ++idx) + rtnl_link_set_weight(l, strtoul(av[idx++], NULL, 0)); + } else if (!strcasecmp(av[idx], "link")) { + if (ac > ++idx) { + int ifindex = rtnl_link_name2i(cache, av[idx++]); + if (ifindex == RTNL_LINK_NOT_FOUND) + goto err_notfound; + rtnl_link_set_link(l, ifindex); + } + } else if (!strcasecmp(av[idx], "master")) { + if (ac > ++idx) { + int ifindex = rtnl_link_name2i(cache, av[idx++]); + if (ifindex == RTNL_LINK_NOT_FOUND) + goto err_notfound; + rtnl_link_set_master(l, ifindex); + } + } else if (!strcasecmp(av[idx], "qdisc")) { + if (ac > ++idx) + rtnl_link_set_qdisc(l, av[idx++]); + } else if (!strcasecmp(av[idx], "name")) { + if (ac > ++idx) + rtnl_link_set_name(l, av[idx++]); + } else if (!strcasecmp(av[idx], "addr")) { + if (ac > ++idx) { + struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC); + if (a == NULL) + goto err; + rtnl_link_set_addr(l, a); + nl_addr_put(a); + } + } else if (!strcasecmp(av[idx], "broadcast")) { + if (ac > ++idx) { + struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC); + if (a == NULL) + goto err; + rtnl_link_set_broadcast(l, a); + nl_addr_put(a); + } + } +#define MFLAG(STR, FLAG) \ + else if (!strcasecmp(av[idx], STR)) { \ + rtnl_link_set_flags(l, FLAG); idx++; } +#define MNOFLAG(STR, FLAG) \ + else if (!strcasecmp(av[idx], STR)) { \ + rtnl_link_unset_flags(l, FLAG); idx++; } + + MFLAG("up", IFF_UP) + MNOFLAG("down", IFF_UP) + MFLAG("noarp", IFF_NOARP) + MNOFLAG("arp", IFF_NOARP) + MFLAG("promisc", IFF_PROMISC) + MNOFLAG("nopromisc", IFF_PROMISC) + MFLAG("dynamic", IFF_DYNAMIC) + MNOFLAG("nodynamic", IFF_DYNAMIC) + MFLAG("multicast", IFF_MULTICAST) + MNOFLAG("nomulticast", IFF_MULTICAST) + MFLAG("allmulticast", IFF_ALLMULTI) + MNOFLAG("noallmulticast", IFF_ALLMULTI) +#undef MFLAG +#undef MNOFLAG + else { + fprintf(stderr, "What is '%s'?\n", av[idx]); + exit(1); + } + } + + return; + +err_notfound: + fprintf(stderr, "Unknown link %s\n", av[idx-1]); + exit(1); +err: + fprintf(stderr, "%s\n", nl_geterror()); + exit(1); +} diff --git a/src/f_neigh.c b/src/f_neigh.c new file mode 100644 index 0000000..ac9355c --- /dev/null +++ b/src/f_neigh.c @@ -0,0 +1,51 @@ +/* + * src/f_neigh.c Neighbour Filter + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +static void get_filter(struct rtnl_neigh *n, int ac, char **av, int idx, + struct nl_cache *cache) +{ + struct nl_cache *lc = nl_cache_mngt_require("route/link"); + + while (ac > idx) { + if (!strcasecmp(av[idx], "dev")) { + if (ac > ++idx) { + int ifindex = rtnl_link_name2i(lc, av[idx++]); + if (ifindex == RTNL_LINK_NOT_FOUND) + goto err_notfound; + rtnl_neigh_set_ifindex(n, ifindex); + } + } else if (!strcasecmp(av[idx], "dst")) { + if (ac > ++idx) { + struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC); + if (a == NULL) + goto err; + rtnl_neigh_set_dst(n, a); + nl_addr_put(a); + } + } else if (!strcasecmp(av[idx], "lladdr")) { + if (ac > ++idx) { + struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC); + if (a == NULL) + goto err; + rtnl_neigh_set_lladdr(n, a); + nl_addr_put(a); + } + } + } + + return; +err_notfound: + fprintf(stderr, "Unable to find interface %s\n", av[idx-1]); + exit(1); +err: + fprintf(stderr, "%s\n", nl_geterror()); + exit(1); +} diff --git a/src/f_route.c b/src/f_route.c new file mode 100644 index 0000000..5e6e619 --- /dev/null +++ b/src/f_route.c @@ -0,0 +1,73 @@ +/* + * src/f_route.c Routes Filter + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +static void get_filter(struct rtnl_route *r, int ac, char **av, int idx, + struct nl_cache *cache, struct nl_cache *link_cache) +{ + while (ac > idx) { + if (!strcasecmp(av[idx], "src")) { + if (ac > ++idx) { + struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC); + if (!a) + goto err; + rtnl_route_set_pref_src(r, a); + nl_addr_put(a); + } + } else if (!strcasecmp(av[idx], "via")) { + if (ac > ++idx) { + struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC); + if (!a) + goto err; + rtnl_route_set_gateway(r, a); + nl_addr_put(a); + } + } else if (!strcasecmp(av[idx], "from")) { + if (ac > ++idx) { + struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC); + if (!a) + goto err; + rtnl_route_set_src(r, a); + nl_addr_put(a); + } + } else if (!strcasecmp(av[idx], "tos")) { + if (ac > ++idx) + rtnl_route_set_tos(r, strtoul(av[idx++], NULL, 0)); + } else if (!strcasecmp(av[idx], "prio")) { + if (ac > ++idx) + rtnl_route_set_prio(r, strtoul(av[idx++], NULL, 0)); + } else if (!strcasecmp(av[idx], "scope")) { + if (ac > ++idx) + rtnl_route_set_prio(r, rtnl_str2scope(av[idx++])); + } else if (!strcasecmp(av[idx], "dev")) { + if (ac > ++idx) { + int ifindex = rtnl_link_name2i(link_cache, av[idx++]); + if (ifindex == RTNL_LINK_NOT_FOUND) + goto err_notfound; + rtnl_route_set_oif(r, ifindex); + } + } else if (!strcasecmp(av[idx], "table")) { + if (ac > ++idx) + rtnl_route_set_table(r, strtoul(av[idx++], NULL, 0)); + } else { + fprintf(stderr, "What is '%s'?\n", av[idx]); + exit(1); + } + } + + return; + +err_notfound: + fprintf(stderr, "Unable to find device \"%s\"\n", av[idx-1]); + exit(1); +err: + fprintf(stderr, "%s\n", nl_geterror()); + exit(1); +} diff --git a/src/nl-addr-add.c b/src/nl-addr-add.c new file mode 100644 index 0000000..fc07611 --- /dev/null +++ b/src/nl-addr-add.c @@ -0,0 +1,68 @@ +/* + * src/nl-addr-add.c Add addresses + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct rtnl_addr *addr; + struct nl_addr *local; + int err = 1; + + if (argc < 3 || !strcmp(argv[1], "-h")) { + printf("Usage: nl-addr-add \n"); + goto errout; + } + + if (nltool_init(argc, argv) < 0) + goto errout; + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + goto errout; + + addr = rtnl_addr_alloc(); + if (!addr) + goto errout_free_handle; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free_addr; + + local = nltool_addr_parse(argv[1]); + if (!local) + goto errout_close; + + if (rtnl_addr_set_local(addr, local) < 0) { + fprintf(stderr, "Unable to set local address: %s\n", + nl_geterror()); + goto errout_put_addr; + } + + rtnl_addr_set_ifindex(addr, strtoul(argv[2], NULL, 0)); + + if (rtnl_addr_add(nlh, addr, 0) < 0) { + fprintf(stderr, "Unable to add address: %s\n", nl_geterror()); + goto errout_close; + } + + err = 0; +errout_put_addr: + nl_addr_put(local); +errout_close: + nl_close(nlh); +errout_free_addr: + rtnl_addr_put(addr); +errout_free_handle: + nl_handle_destroy(nlh); +errout: + return err; +} diff --git a/src/nl-addr-delete.c b/src/nl-addr-delete.c new file mode 100644 index 0000000..8518268 --- /dev/null +++ b/src/nl-addr-delete.c @@ -0,0 +1,70 @@ +/* + * src/nl-addr-delete.c Delete addresses + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct rtnl_addr *addr; + struct nl_addr *local; + int err = 1; + + if (argc < 3 || !strcmp(argv[1], "-h")) { + printf("Usage: nl-addr-delete \n"); + goto errout; + } + + if (nltool_init(argc, argv) < 0) + goto errout; + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + goto errout; + + addr = rtnl_addr_alloc(); + if (!addr) + goto errout_free_handle; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free_addr; + + local = nltool_addr_parse(argv[1]); + if (!local) + goto errout_close; + + if (rtnl_addr_set_local(addr, local) < 0) { + fprintf(stderr, "Unable to set local address: %s\n", + nl_geterror()); + goto errout_addr_put; + } + + rtnl_addr_set_ifindex(addr, strtoul(argv[2], NULL, 0)); + + if (rtnl_addr_delete(nlh, addr, 0) < 0) { + fprintf(stderr, "Unable to delete address: %s\n", + nl_geterror()); + goto errout_addr_put; + } + + err = 0; + +errout_addr_put: + nl_addr_put(local); +errout_close: + nl_close(nlh); +errout_free_addr: + rtnl_addr_put(addr); +errout_free_handle: + nl_handle_destroy(nlh); +errout: + return err; +} diff --git a/src/nl-addr-dump.c b/src/nl-addr-dump.c new file mode 100644 index 0000000..45a2ab8 --- /dev/null +++ b/src/nl-addr-dump.c @@ -0,0 +1,82 @@ +/* + * src/nl-addr-dump.c Dump address attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( + "Usage: nl-addr-dump []\n" + " mode := { brief | detailed | stats | xml }\n" + " filter := [dev DEV] [label LABEL] [family FAMILY] [scope SCOPE]\n" + " [local ADDR] [peer ADDR] [broadcast ADDR] [anycast ADDR]\n" + " [multicast ADDR]\n"); + exit(1); +} + +#include "f_addr.c" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache, *addr_cache; + struct rtnl_addr *addr; + struct nl_dump_params params = { + .dp_fd = stdout, + .dp_type = NL_DUMP_BRIEF + }; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + addr = rtnl_addr_alloc(); + if (!addr) + goto errout; + + if (argc < 2 || !strcmp(argv[1], "-h")) + print_usage(); + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout_close; + + addr_cache = nltool_alloc_addr_cache(nlh); + if (!addr_cache) + goto errout_link_cache; + + params.dp_type = nltool_parse_dumptype(argv[1]); + if (params.dp_type < 0) + goto errout_addr_cache; + get_filter(addr, argc, argv, 2, link_cache); + + nl_cache_dump_filter(addr_cache, ¶ms, (struct nl_object *) addr); + + err = 0; + +errout_addr_cache: + nl_cache_free(addr_cache); +errout_link_cache: + nl_cache_free(link_cache); +errout_close: + nl_close(nlh); +errout_free: + rtnl_addr_put(addr); +errout: + return err; +} diff --git a/src/nl-fib-lookup.c b/src/nl-fib-lookup.c new file mode 100644 index 0000000..69e9923 --- /dev/null +++ b/src/nl-fib-lookup.c @@ -0,0 +1,130 @@ +/* + * src/nl-fib-lookup.c FIB Route Lookup + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( + "Usage: nl-fib-lookup [options] \n" + "Options:\n" + " -t, --table Table id\n" + " -f, --fwmark Firewall mark\n" + " -s, --scope Routing scope\n" + " -T, --tos Type of Service\n"); + exit(1); +} + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *result; + struct flnl_request *request; + struct nl_addr *addr; + struct nl_dump_params params = { + .dp_fd = stdout, + .dp_type = NL_DUMP_FULL, + }; + int table = RT_TABLE_UNSPEC, scope = RT_SCOPE_UNIVERSE; + int tos = 0, err = 1; + uint64_t fwmark = 0; + + if (nltool_init(argc, argv) < 0) + return -1; + + while (1) { + static struct option long_opts[] = { + {"table", 1, 0, 't'}, + {"fwmark", 1, 0, 'f'}, + {"scope", 1, 0, 's'}, + {"tos", 1, 0, 'T'}, + {"help", 0, 0, 'h'}, + {0, 0, 0, 0}, + }; + int c, idx = 0; + + c = getopt_long(argc, argv, "t:f:s:T:h", long_opts, &idx); + if (c == -1) + break; + + switch (c) { + case 't': + table = strtoul(optarg, NULL, 0); + break; + case 'f': + fwmark = strtoul(optarg, NULL, 0); + break; + case 's': + scope = strtoul(optarg, NULL, 0); + break; + case 'T': + tos = strtoul(optarg, NULL, 0); + break; + default: + print_usage(); + } + } + + if (optind >= argc) + print_usage(); + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + addr = nl_addr_parse(argv[optind], AF_INET); + if (!addr) { + fprintf(stderr, "Unable to parse address \"%s\": %s\n", + argv[optind], nl_geterror()); + goto errout; + } + + result = flnl_result_alloc_cache(); + if (!result) + goto errout_addr; + + request = flnl_request_alloc(); + if (!request) + goto errout_result; + + flnl_request_set_table(request, table); + flnl_request_set_fwmark(request, fwmark); + flnl_request_set_scope(request, scope); + flnl_request_set_tos(request, tos); + + err = flnl_request_set_addr(request, addr); + nl_addr_put(addr); + if (err < 0) + goto errout_put; + + if (nltool_connect(nlh, NETLINK_FIB_LOOKUP) < 0) + goto errout_put; + + err = flnl_lookup(nlh, request, result); + if (err < 0) { + fprintf(stderr, "Unable to lookup: %s\n", nl_geterror()); + goto errout_put; + } + + nl_cache_dump(result, ¶ms); + + err = 0; +errout_put: + flnl_request_put(request); +errout_result: + nl_cache_free(result); +errout_addr: + nl_addr_put(addr); +errout: + nl_close(nlh); + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-link-dump.c b/src/nl-link-dump.c new file mode 100644 index 0000000..51be032 --- /dev/null +++ b/src/nl-link-dump.c @@ -0,0 +1,75 @@ +/* + * src/nl-link-dump.c Dump link attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( + "Usage: nl-link-dump []\n" + " mode := { brief | detailed | stats | xml }\n" + " filter := [dev DEV] [mtu MTU] [txqlen TXQLEN] [weight WEIGHT] [link LINK]\n" + " [master MASTER] [qdisc QDISC] [addr ADDR] [broadcast BRD]\n" + " [{ up | down }] [{ arp | noarp }] [{ promisc | nopromisc }]\n" + " [{ dynamic | nodynamic }] [{ multicast | nomulticast }]\n" + " [{ trailers | notrailers }] [{ allmulticast | noallmulticast }]\n"); + exit(1); +} + +#include "f_link.c" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache; + struct rtnl_link *link; + struct nl_dump_params params = { + .dp_fd = stdout, + .dp_type = NL_DUMP_BRIEF + }; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 2 || !strcmp(argv[1], "-h")) + print_usage(); + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + link = rtnl_link_alloc(); + if (!link) + goto errout; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_put; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout_put; + + params.dp_type = nltool_parse_dumptype(argv[1]); + if (params.dp_type < 0) + goto errout_put; + + get_filter(link, argc, argv, 2, link_cache); + nl_cache_dump_filter(link_cache, ¶ms, (struct nl_object *) link); + nl_cache_free(link_cache); + err = 0; +errout_put: + rtnl_link_put(link); +errout: + nl_close(nlh); + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-link-ifindex2name.c b/src/nl-link-ifindex2name.c new file mode 100644 index 0000000..1f28d66 --- /dev/null +++ b/src/nl-link-ifindex2name.c @@ -0,0 +1,55 @@ +/* + * src/nl-link-ifindex2name.c Transform a interface index to its name + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +int main(int argc, char **argv) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache; + int err = -1, ifindex; + char dst[32] = {0}; + const char *name; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 2 || !strcmp(argv[1], "-h")) { + fprintf(stderr, "Usage: nl-link-ifindex2name \n"); + return -1; + } + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout; + + ifindex = strtoul(argv[1], NULL, 0); + + if (!(name = rtnl_link_i2name(link_cache, ifindex, dst, sizeof(dst)))) + fprintf(stderr, "Interface index %d does not exist\n", ifindex); + else + printf("%s\n", name); + + nl_cache_free(link_cache); + err = 0; +errout: + nl_close(nlh); + nl_handle_destroy(nlh); + + return err; +} diff --git a/src/nl-link-name2ifindex.c b/src/nl-link-name2ifindex.c new file mode 100644 index 0000000..6ed146f --- /dev/null +++ b/src/nl-link-name2ifindex.c @@ -0,0 +1,51 @@ +/* + * src/nl-link-name2ifindex.c Transform a interface name to its index + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache; + int err = -1, ifindex; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 2 || !strcmp(argv[1], "-h")) { + printf("Usage: nl-link-name2ifindex \n"); + return -1; + } + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout; + + if ((ifindex = rtnl_link_name2i(link_cache, argv[1])) == RTNL_LINK_NOT_FOUND) + fprintf(stderr, "Interface %s does not exist\n", argv[1]); + else + printf("%d\n", ifindex); + + nl_cache_free(link_cache); + err = 0; +errout: + nl_close(nlh); + nl_handle_destroy(nlh); + + return err; +} diff --git a/src/nl-link-set.c b/src/nl-link-set.c new file mode 100644 index 0000000..5bd4cde --- /dev/null +++ b/src/nl-link-set.c @@ -0,0 +1,83 @@ +/* + * src/nl-link-set.c Set link attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( + "Usage: nl-link-set \n" + " changes := [dev DEV] [mtu MTU] [txqlen TXQLEN] [weight WEIGHT] [link LINK]\n" + " [master MASTER] [qdisc QDISC] [addr ADDR] [broadcast BRD]\n" + " [{ up | down }] [{ arp | noarp }] [{ promisc | nopromisc }]\n" + " [{ dynamic | nodynamic }] [{ multicast | nomulticast }]\n" + " [{ trailers | notrailers }] [{ allmulticast | noallmulticast }]\n"); + exit(1); +} + +#include "f_link.c" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache; + struct rtnl_link *link, *orig; + int err = 1, ifindex; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 2 || !strcmp(argv[1], "-h")) + print_usage(); + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + link = rtnl_link_alloc(); + if (!link) + goto errout; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout_close; + + ifindex = strtoul(argv[1], NULL, 0); + + if (!(orig = rtnl_link_get(link_cache, ifindex))) { + fprintf(stderr, "Interface index %d does not exist\n", ifindex); + goto errout_cache; + } + + get_filter(link, argc, argv, 2, link_cache); + + if (rtnl_link_change(nlh, orig, link, 0) < 0) { + fprintf(stderr, "Unable to change link: %s\n", nl_geterror()); + goto errout_put; + } + + err = 0; + +errout_put: + rtnl_link_put(orig); +errout_cache: + nl_cache_free(link_cache); +errout_close: + nl_close(nlh); +errout_free: + rtnl_link_put(link); +errout: + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-link-stats.c b/src/nl-link-stats.c new file mode 100644 index 0000000..9e20e21 --- /dev/null +++ b/src/nl-link-stats.c @@ -0,0 +1,109 @@ +/* + * src/nl-link-stats.c Retrieve link statistics + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( +"Usage: nl-link-stats [ ...]\n" +" ifindex := { all | number }\n" +" statistic := { (rx|tx)_packets | (rx|tx)_bytes | (rx|tx)_errors |\n" +" (rx|tx)_dropped | (rx|tx)_compressed | (rx|tx)_fifo_err |\n" \ +" rx_len_err | rx_over_err | rx_crc_err | rx_frame_err |\n" +" rx_missed_err | tx_abort_err | tx_carrier_err |\n" +" tx_hbeat_err | tx_win_err | tx_collision | multicast }\n"); + exit(1); +} + +static char **gargv; +static int gargc; + +static void dump_stat(struct rtnl_link *link, int id) +{ + uint64_t st = rtnl_link_get_stat(link, id); + char buf[62]; + + printf("%s.%s %" PRIu64 "\n", rtnl_link_get_name(link), + rtnl_link_stat2str(id, buf, sizeof(buf)), st); +} + +static void dump_stats(struct nl_object *obj, void *arg) +{ + int i; + struct rtnl_link *link = (struct rtnl_link *) obj; + + if (!strcasecmp(gargv[0], "all")) { + for (i = 0; i < RTNL_LINK_STATS_MAX; i++) + dump_stat(link, i); + } else { + for (i = 0; i < gargc; i++) { + int id = rtnl_link_str2stat(gargv[i]); + + if (id < 0) + fprintf(stderr, "Warning: Unknown statistic " + "\"%s\"\n", gargv[i]); + else + dump_stat(link, id); + } + } +} + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 3 || !strcmp(argv[1], "-h")) + print_usage(); + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout_close; + + gargv = &argv[2]; + gargc = argc - 2; + + if (!strcasecmp(argv[1], "all")) + nl_cache_foreach(link_cache, dump_stats, NULL); + else { + int ifindex = strtoul(argv[1], NULL, 0); + struct rtnl_link *link = rtnl_link_get(link_cache, ifindex); + + if (!link) { + fprintf(stderr, "Could not find ifindex %d\n", ifindex); + goto errout_link_cache; + } + + dump_stats((struct nl_object *) link, NULL); + rtnl_link_put(link); + } + + err = 0; +errout_link_cache: + nl_cache_free(link_cache); +errout_close: + nl_close(nlh); +errout: + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-list-sockets.c b/src/nl-list-sockets.c new file mode 100644 index 0000000..9a1333c --- /dev/null +++ b/src/nl-list-sockets.c @@ -0,0 +1,58 @@ +/* + * nl-list-sockets.c Pretty-print /proc/net/netlink + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +#define PROC_NETLINK "/proc/net/netlink" + +static void print_usage(void) +{ + fprintf(stderr, "Usage: nl-list-sockets []\n"); + exit(1); +} + +int main(int argc, char *argv[]) +{ + FILE *fd; + char buf[2048], p[64]; + + if (argc > 1 && !strcasecmp(argv[1], "-h")) + print_usage(); + + fd = fopen(PROC_NETLINK, "r"); + if (fd == NULL) { + perror("fopen"); + return -1; + } + + printf("Address Family PID Groups rmem wmem " \ + "CB refcnt\n"); + + while (fgets(buf, sizeof(buf), fd)) { + unsigned long sk, cb; + int ret, proto, pid, rmem, wmem, refcnt; + uint32_t groups; + + ret = sscanf(buf, "%lx %d %d %08x %d %d %lx %d\n", + &sk, &proto, &pid, &groups, &rmem, &wmem, + &cb, &refcnt); + if (ret != 8) + continue; + + printf("0x%08lx %-16s %-6d %08x %-6d %-6d 0x%08lx %d\n", + sk, nl_nlfamily2str(proto, p, sizeof(p)), pid, + groups, rmem, wmem, cb, refcnt); + } + + fclose(fd); + + return 0; +} diff --git a/src/nl-monitor.c b/src/nl-monitor.c new file mode 100644 index 0000000..c08ed18 --- /dev/null +++ b/src/nl-monitor.c @@ -0,0 +1,139 @@ +/* + * src/nl-monitor.c Monitor events + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" +#include +#include + +static void obj_input(struct nl_object *obj, void *arg) +{ + struct nl_dump_params dp = { + .dp_type = NL_DUMP_STATS, + .dp_fd = stdout, + .dp_dump_msgtype = 1, + }; + + nl_object_dump(obj, &dp); +} + +static int event_input(struct nl_msg *msg, void *arg) +{ + if (nl_msg_parse(msg, &obj_input, NULL) < 0) + fprintf(stderr, "<> Unknown message type\n"); + + /* Exit nl_recvmsgs_def() and return to the main select() */ + return NL_EXIT; +} + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache; + int err = 1; + int i, idx; + + static const struct { + enum rtnetlink_groups gr_id; + const char* gr_name; + } known_groups[] = { + { RTNLGRP_LINK, "link" }, + { RTNLGRP_NOTIFY, "notify" }, + { RTNLGRP_NEIGH, "neigh" }, + { RTNLGRP_TC, "tc" }, + { RTNLGRP_IPV4_IFADDR, "ipv4-ifaddr" }, + { RTNLGRP_IPV4_MROUTE, "ipv4-mroute" }, + { RTNLGRP_IPV4_ROUTE, "ipv4-route" }, + { RTNLGRP_IPV6_IFADDR, "ipv6-ifaddr" }, + { RTNLGRP_IPV6_MROUTE, "ipv6-mroute" }, + { RTNLGRP_IPV6_ROUTE, "ipv6-route" }, + { RTNLGRP_IPV6_IFINFO, "ipv6-ifinfo" }, + { RTNLGRP_DECnet_IFADDR, "decnet-ifaddr" }, + { RTNLGRP_DECnet_ROUTE, "decnet-route" }, + { RTNLGRP_IPV6_PREFIX, "ipv6-prefix" }, + { RTNLGRP_FIB_MAGIC, "fib-magic" }, + { RTNLGRP_NONE, NULL } + }; + + if (nltool_init(argc, argv) < 0) + return -1; + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (nlh == NULL) + return -1; + + nl_disable_sequence_check(nlh); + + nl_cb_set(nl_handle_get_cb(nlh), NL_CB_VALID, NL_CB_CUSTOM, + event_input, NULL); + + if (argc > 1 && !strcasecmp(argv[1], "-h")) { + printf("Usage: nl-monitor []\n"); + + printf("Known groups:"); + for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++) + printf(" %s", known_groups[i].gr_name); + printf("\n"); + return 2; + } + + nl_join_groups(nlh, RTMGRP_LINK); + + if (nl_connect(nlh, NETLINK_ROUTE) < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + goto errout; + } + + for (idx = 1; argc > idx; idx++) { + for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++) { + if (!strcmp(argv[idx], known_groups[i].gr_name)) { + + if (nl_join_group(nlh, known_groups[i].gr_id) < 0) { + fprintf(stderr, "%s: %s\n", argv[idx], nl_geterror()); + goto errout; + } + + break; + } + } + if (known_groups[i].gr_id == RTNLGRP_NONE) + fprintf(stderr, "Warning: Unknown group: %s\n", argv[idx]); + } + + if ((link_cache = rtnl_link_alloc_cache(nlh)) == NULL) { + fprintf(stderr, "%s\n", nl_geterror()); + goto errout_close; + } + + nl_cache_mngt_provide(link_cache); + + while (1) { + fd_set rfds; + int fd, retval; + + fd = nl_handle_get_fd(nlh); + + FD_ZERO(&rfds); + FD_SET(fd, &rfds); + /* wait for an incoming message on the netlink socket */ + retval = select(fd+1, &rfds, NULL, NULL, NULL); + + if (retval) { + /* FD_ISSET(fd, &rfds) will be true */ + nl_recvmsgs_def(nlh); + } + } + + nl_cache_free(link_cache); +errout_close: + nl_close(nlh); +errout: + return err; +} diff --git a/src/nl-neigh-add.c b/src/nl-neigh-add.c new file mode 100644 index 0000000..7bc854e --- /dev/null +++ b/src/nl-neigh-add.c @@ -0,0 +1,79 @@ +/* + * src/ nl-neigh-add.c Add a neighbour + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct rtnl_neigh *neigh; + struct nl_addr *addr; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 4 || !strcmp(argv[1], "-h")) { + printf("Usage: nl-neigh-add " + " []\n"); + return 1; + } + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + neigh = rtnl_neigh_alloc(); + if (!neigh) + goto errout; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free; + + addr = nltool_addr_parse(argv[1]); + if (!addr) + goto errout_close; + rtnl_neigh_set_dst(neigh, addr); + nl_addr_put(addr); + + addr = nltool_addr_parse(argv[2]); + if (!addr) + goto errout_close; + rtnl_neigh_set_lladdr(neigh, addr); + nl_addr_put(addr); + + rtnl_neigh_set_ifindex(neigh, strtoul(argv[3], NULL, 0)); + + if (argc > 4) { + int state = rtnl_neigh_str2state(argv[4]); + if (state < 0) { + fprintf(stderr, "Unknown state \"%s\"\n", argv[4]); + goto errout_close; + } + rtnl_neigh_set_state(neigh, state); + } else + rtnl_neigh_set_state(neigh, NUD_PERMANENT); + + if (rtnl_neigh_add(nlh, neigh, 0) < 0) { + fprintf(stderr, "Unable to add address: %s\n", nl_geterror()); + goto errout_close; + } + + err = 0; + +errout_close: + nl_close(nlh); +errout_free: + rtnl_neigh_put(neigh); +errout: + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-neigh-delete.c b/src/nl-neigh-delete.c new file mode 100644 index 0000000..54a0324 --- /dev/null +++ b/src/nl-neigh-delete.c @@ -0,0 +1,64 @@ +/* + * src/nl-neigh-delete.c Delete a neighbour + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct rtnl_neigh *neigh; + struct nl_addr *addr; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 3 || !strcmp(argv[1], "-h")) { + printf("Usage: nl-neigh-delete \n"); + return 2; + } + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + + neigh = rtnl_neigh_alloc(); + if (neigh == NULL) + goto errout; + + if (nl_connect(nlh, NETLINK_ROUTE) < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + goto errout_free; + } + + addr = nl_addr_parse(argv[1], AF_UNSPEC); + if (addr == NULL) { + fprintf(stderr, "Invalid address \"%s\"\n", argv[1]); + goto errout_close; + } + rtnl_neigh_set_dst(neigh, addr); + nl_addr_put(addr); + + rtnl_neigh_set_ifindex(neigh, strtoul(argv[2], NULL, 0)); + + if (rtnl_neigh_delete(nlh, neigh, 0) < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + goto errout_close; + } + + err = 0; + +errout_close: + nl_close(nlh); +errout_free: + rtnl_neigh_put(neigh); +errout: + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-neigh-dump.c b/src/nl-neigh-dump.c new file mode 100644 index 0000000..8976a4f --- /dev/null +++ b/src/nl-neigh-dump.c @@ -0,0 +1,82 @@ +/* + * src/nl-neigh-dump.c Dump neighbour attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( + "Usage: nl-neigh-dump []\n" + " mode := { brief | detailed | stats | xml }\n" + " filter := [dev DEV] [dst ADDR] [lladdr ADDR]\n"); + exit(1); +} + +#include "f_neigh.c" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache, *neigh_cache; + struct rtnl_neigh *neigh; + struct nl_dump_params params = { + .dp_fd = stdout, + .dp_type = NL_DUMP_BRIEF + }; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 2 || !strcmp(argv[1], "-h")) + print_usage(); + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + neigh = rtnl_neigh_alloc(); + if (neigh == NULL) + goto errout; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout_close; + + neigh_cache = nltool_alloc_neigh_cache(nlh); + if (!neigh_cache) + goto errout_link_cache; + + params.dp_type = nltool_parse_dumptype(argv[1]); + if (params.dp_type < 0) + goto errout_neigh_cache; + + get_filter(neigh, argc, argv, 2, neigh_cache); + + nl_cache_dump_filter(neigh_cache, ¶ms, (struct nl_object *) neigh); + + err = 0; + +errout_neigh_cache: + nl_cache_free(neigh_cache); +errout_link_cache: + nl_cache_free(link_cache); +errout_close: + nl_close(nlh); +errout_free: + rtnl_neigh_put(neigh); +errout: + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-neightbl-dump.c b/src/nl-neightbl-dump.c new file mode 100644 index 0000000..230e059 --- /dev/null +++ b/src/nl-neightbl-dump.c @@ -0,0 +1,70 @@ +/* + * src/nl-neightbl-dump.c Dump neighbour tables + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( + "Usage: nl-neightbl-dump []\n" + " mode := { brief | detailed | stats | xml }\n" + " filter :=\n"); + exit(1); +} + +int main(int argc, char *argv[]) +{ + int err = -1; + struct nl_handle *nlh; + struct nl_cache *ntc, *lc; + struct nl_dump_params params = { + .dp_fd = stdout, + .dp_type = NL_DUMP_BRIEF, + }; + + if (argc < 2) + print_usage(); + + if (nltool_init(argc, argv) < 0) + return -1; + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout; + + ntc = nltool_alloc_neightbl_cache(nlh); + if (!ntc) + goto errout_close; + + lc = nltool_alloc_link_cache(nlh); + if (!lc) + goto errout_ntbl_cache; + + params.dp_type = nltool_parse_dumptype(argv[1]); + if (params.dp_type < 0) + goto errout_link_cache; + + nl_cache_dump(ntc, ¶ms); + err = 0; + +errout_link_cache: + nl_cache_free(lc); +errout_ntbl_cache: + nl_cache_free(ntc); +errout_close: + nl_close(nlh); +errout: + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-qdisc-add.c b/src/nl-qdisc-add.c new file mode 100644 index 0000000..0bf2939 --- /dev/null +++ b/src/nl-qdisc-add.c @@ -0,0 +1,196 @@ +/* + * src/nl-qdisc-dump.c Dump qdisc attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" +#include +#include + +static void print_usage(void) +{ + printf( +"Usage: nl-qdisc-add \n"); + exit(1); +} + +static int parse_blackhole_opts(struct rtnl_qdisc *qdisc, char *argv[], + int argc) +{ + return 0; +} + +static int parse_pfifo_opts(struct rtnl_qdisc *qdisc, char *argv[], int argc) +{ + int err, limit; + + if (argc > 0) { + if (argc != 2 || strcasecmp(argv[0], "limit")) { + fprintf(stderr, "Usage: ... pfifo limit \n"); + return -1; + } + + limit = strtoul(argv[1], NULL, 0); + err = rtnl_qdisc_fifo_set_limit(qdisc, limit); + if (err < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + return -1; + } + } + + return 0; +} + +static int parse_bfifo_opts(struct rtnl_qdisc *qdisc, char *argv[], int argc) +{ + int err, limit; + + if (argc > 0) { + if (argc != 2 || strcasecmp(argv[0], "limit")) { + fprintf(stderr, "Usage: ... bfifo limit \n"); + return -1; + } + + limit = nl_size2int(argv[1]); + if (limit < 0) { + fprintf(stderr, "Invalid value for limit.\n"); + return -1; + } + + err = rtnl_qdisc_fifo_set_limit(qdisc, limit); + if (err < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + return -1; + } + } + + return 0; +} + +static int parse_prio_opts(struct rtnl_qdisc *qdisc, char *argv[], int argc) +{ + int i, err, bands; + uint8_t map[] = QDISC_PRIO_DEFAULT_PRIOMAP; + + if (argc > 0) { + if (argc < 2 || strcasecmp(argv[0], "bands")) + goto usage; + + bands = strtoul(argv[1], NULL, 0); + err = rtnl_qdisc_prio_set_bands(qdisc, bands); + if (err < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + return -1; + } + } + + if (argc > 2) { + if (argc < 5 || strcasecmp(argv[2], "map")) + goto usage; + + for (i = 3; i < (argc & ~1U); i += 2) { + int prio, band; + + prio = rtnl_str2prio(argv[i]); + if (prio < 0 || prio > sizeof(map)/sizeof(map[0])) { + fprintf(stderr, "Invalid priority \"%s\"\n", + argv[i]); + return -1; + } + + band = strtoul(argv[i+1], NULL, 0); + + map[prio] = band; + } + } + + err = rtnl_qdisc_prio_set_priomap(qdisc, map, sizeof(map)); + if (err < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + return -1; + } + + return 0; +usage: + fprintf(stderr, "Usage: ... prio bands map MAP\n" + "MAP := \n"); + return -1; +} + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct rtnl_qdisc *qdisc; + uint32_t handle, parent; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 5 || !strcmp(argv[1], "-h")) + print_usage(); + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + goto errout; + + qdisc = rtnl_qdisc_alloc(); + if (!qdisc) + goto errout_free_handle; + + rtnl_qdisc_set_ifindex(qdisc, strtoul(argv[1], NULL, 0)); + + if (rtnl_tc_str2handle(argv[2], &handle) < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + goto errout_free_qdisc; + } + + if (rtnl_tc_str2handle(argv[3], &parent) < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + goto errout_free_qdisc; + } + + rtnl_qdisc_set_handle(qdisc, handle); + rtnl_qdisc_set_parent(qdisc, parent); + rtnl_qdisc_set_kind(qdisc, argv[4]); + + if (!strcasecmp(argv[4], "blackhole")) + err = parse_blackhole_opts(qdisc, &argv[5], argc-5); + else if (!strcasecmp(argv[4], "pfifo")) + err = parse_pfifo_opts(qdisc, &argv[5], argc-5); + else if (!strcasecmp(argv[4], "bfifo")) + err = parse_bfifo_opts(qdisc, &argv[5], argc-5); + else if (!strcasecmp(argv[4], "prio")) + err = parse_prio_opts(qdisc, &argv[5], argc-5); + else { + fprintf(stderr, "Unknown qdisc \"%s\"\n", argv[4]); + goto errout_free_qdisc; + } + + if (err < 0) + goto errout_free_qdisc; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free_qdisc; + + if (rtnl_qdisc_add(nlh, qdisc, NLM_F_REPLACE) < 0) { + fprintf(stderr, "Unable to add Qdisc: %s\n", nl_geterror()); + goto errout_close; + } + + err = 0; +errout_close: + nl_close(nlh); +errout_free_qdisc: + rtnl_qdisc_put(qdisc); +errout_free_handle: + nl_handle_destroy(nlh); +errout: + return err; +} diff --git a/src/nl-qdisc-delete.c b/src/nl-qdisc-delete.c new file mode 100644 index 0000000..865d1e4 --- /dev/null +++ b/src/nl-qdisc-delete.c @@ -0,0 +1,76 @@ +/* + * src/nl-qdisc-delete.c Delete Qdiscs + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf("Usage: nl-qdisc-delete \n"); + exit(1); +} + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct rtnl_qdisc *qdisc; + uint32_t handle, parent; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 3 || !strcmp(argv[1], "-h")) + print_usage(); + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + goto errout; + + qdisc = rtnl_qdisc_alloc(); + if (!qdisc) + goto errout_free_handle; + + rtnl_qdisc_set_ifindex(qdisc, strtoul(argv[1], NULL, 0)); + + if (rtnl_tc_str2handle(argv[2], &parent) < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + goto errout_free_qdisc; + } + + if (argc > 3) { + if (rtnl_tc_str2handle(argv[3], &handle) < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + goto errout_free_qdisc; + } + + rtnl_qdisc_set_handle(qdisc, handle); + } + + rtnl_qdisc_set_parent(qdisc, parent); + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free_qdisc; + + if (rtnl_qdisc_delete(nlh, qdisc) < 0) { + fprintf(stderr, "Unable to delete Qdisc: %s\n", nl_geterror()); + goto errout_close; + } + + err = 0; +errout_close: + nl_close(nlh); +errout_free_qdisc: + rtnl_qdisc_put(qdisc); +errout_free_handle: + nl_handle_destroy(nlh); +errout: + return err; +} diff --git a/src/nl-qdisc-dump.c b/src/nl-qdisc-dump.c new file mode 100644 index 0000000..e677325 --- /dev/null +++ b/src/nl-qdisc-dump.c @@ -0,0 +1,74 @@ +/* + * src/nl-qdisc-dump.c Dump qdisc attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( +"Usage: nl-qdisc-dump \n" +" mode := { brief | detailed | stats | xml }\n"); + exit(1); +} + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache, *qdisc_cache; + struct rtnl_qdisc *qdisc; + struct nl_dump_params params = { + .dp_fd = stdout, + .dp_type = NL_DUMP_BRIEF + }; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 2 || !strcmp(argv[1], "-h")) + print_usage(); + + params.dp_type = nltool_parse_dumptype(argv[1]); + if (params.dp_type < 0) + return -1; + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + qdisc = rtnl_qdisc_alloc(); + if (!qdisc) + goto errout_no_put; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout; + + qdisc_cache = nltool_alloc_qdisc_cache(nlh); + if (!qdisc_cache) + goto errout_link_cache; + + nl_cache_dump_filter(qdisc_cache, ¶ms, (struct nl_object *) qdisc); + nl_cache_free(qdisc_cache); + err = 0; + +errout_link_cache: + nl_cache_free(link_cache); +errout: + rtnl_qdisc_put(qdisc); +errout_no_put: + nl_close(nlh); + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-route-dump.c b/src/nl-route-dump.c new file mode 100644 index 0000000..18e6f4a --- /dev/null +++ b/src/nl-route-dump.c @@ -0,0 +1,81 @@ +/* + * src/nl-route-dump.c Dump route attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( + "Usage: nl-route-dump []\n" + " mode := { brief | detailed | stats | xml }\n"); + exit(1); +} + +#include "f_route.c" + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache, *route_cache; + struct rtnl_route *route; + struct nl_dump_params params = { + .dp_fd = stdout, + .dp_type = NL_DUMP_BRIEF + }; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 2 || !strcmp(argv[1], "-h")) + print_usage(); + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + goto errout; + + route = rtnl_route_alloc(); + if (!route) + goto errout; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout_close; + + route_cache = nltool_alloc_route_cache(nlh); + if (!route_cache) + goto errout_link_cache; + + params.dp_type = nltool_parse_dumptype(argv[1]); + if (params.dp_type < 0) + goto errout_route_cache; + + get_filter(route, argc, argv, 2, route_cache, link_cache); + + nl_cache_dump_filter(route_cache, ¶ms, (struct nl_object *) route); + + err = 0; + +errout_route_cache: + nl_cache_free(route_cache); +errout_link_cache: + nl_cache_free(link_cache); +errout_close: + nl_close(nlh); +errout_free: + rtnl_route_put(route); +errout: + nl_handle_destroy(nlh); + return err; +} diff --git a/src/nl-route-get.c b/src/nl-route-get.c new file mode 100644 index 0000000..b5425bd --- /dev/null +++ b/src/nl-route-get.c @@ -0,0 +1,106 @@ +/* + * src/nl-route-get.c Get Route Attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf("Usage: nl-route-get \n"); + exit(1); +} + +static int cb(struct nl_msg *msg, void *arg) +{ + nl_cache_parse_and_add(arg, msg); + + return 0; +} + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache, *route_cache; + struct nl_addr *dst; + struct nl_dump_params params = { + .dp_fd = stdout, + .dp_type = NL_DUMP_BRIEF + }; + int err = 1; + + if (argc < 2 || !strcmp(argv[1], "-h")) + print_usage(); + + if (nltool_init(argc, argv) < 0) + goto errout; + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + goto errout; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free_handle; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout_close; + + dst = nltool_addr_parse(argv[1]); + if (!dst) + goto errout_link_cache; + + route_cache = nltool_alloc_route_cache(nlh); + if (!route_cache) + goto errout_addr_put; + + { + struct nl_msg *m; + struct rtmsg rmsg = { + .rtm_family = nl_addr_get_family(dst), + .rtm_dst_len = nl_addr_get_prefixlen(dst), + }; + + m = nlmsg_build_simple(RTM_GETROUTE, 0); + nlmsg_append(m, &rmsg, sizeof(rmsg), 1); + nla_put_addr(m, RTA_DST, dst); + + if ((err = nl_send_auto_complete(nlh, m)) < 0) { + nlmsg_free(m); + fprintf(stderr, "%s\n", nl_geterror()); + goto errout_route_cache; + } + + nlmsg_free(m); + + nl_cb_set(nl_handle_get_cb(nlh), NL_CB_VALID, NL_CB_CUSTOM, + cb, route_cache); + + if (nl_recvmsgs_def(nlh) < 0) { + fprintf(stderr, "%s\n", nl_geterror()); + goto errout_route_cache; + } + } + + nl_cache_dump(route_cache, ¶ms); + + err = 0; +errout_route_cache: + nl_cache_free(route_cache); +errout_addr_put: + nl_addr_put(dst); +errout_link_cache: + nl_cache_free(link_cache); +errout_close: + nl_close(nlh); +errout_free_handle: + nl_handle_destroy(nlh); +errout: + return err; +} diff --git a/src/nl-rule-dump.c b/src/nl-rule-dump.c new file mode 100644 index 0000000..a6a2dd9 --- /dev/null +++ b/src/nl-rule-dump.c @@ -0,0 +1,78 @@ +/* + * src/nl-rule-dump.c Dump rule attributes + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +static void print_usage(void) +{ + printf( + "Usage: nl-rule-dump []\n" + " mode := { brief | detailed | stats | xml }\n"); + exit(1); +} + +int main(int argc, char *argv[]) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache, *rule_cache; + struct rtnl_rule *rule; + struct nl_dump_params params = { + .dp_fd = stdout, + .dp_type = NL_DUMP_BRIEF + }; + int err = 1; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 2 || !strcmp(argv[1], "-h")) + print_usage(); + + nlh = nl_handle_alloc_nondefault(nltool_cbset); + if (!nlh) + return -1; + + rule = rtnl_rule_alloc(); + if (!rule) + goto errout; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout_free; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout_close; + + rule_cache = nltool_alloc_rule_cache(nlh); + if (!rule_cache) + goto errout_link_cache; + + params.dp_type = nltool_parse_dumptype(argv[1]); + if (params.dp_type < 0) + goto errout_rule_cache; + + //get_filter(route, argc, argv, 2, route_cache); + + nl_cache_dump_filter(rule_cache, ¶ms, (struct nl_object *) rule); + + err = 0; + +errout_rule_cache: + nl_cache_free(rule_cache); +errout_link_cache: + nl_cache_free(link_cache); +errout_close: + nl_close(nlh); +errout_free: + nl_object_put((struct nl_object *) rule); +errout: + return err; +} diff --git a/src/nl-tctree-dump.c b/src/nl-tctree-dump.c new file mode 100644 index 0000000..e2f11a2 --- /dev/null +++ b/src/nl-tctree-dump.c @@ -0,0 +1,144 @@ +/* + * src/nl-tctree-dump.c Dump Traffic Control Tree + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" +#include + +static struct nl_handle *nl_handle; +static struct nl_cache *qdisc_cache, *class_cache; +static struct nl_dump_params dump_params = { + .dp_type = NL_DUMP_FULL, +}; + +static int ifindex; +static void print_qdisc(struct nl_object *, void *); + +static void print_class(struct nl_object *obj, void *arg) +{ + struct rtnl_qdisc *leaf; + struct rtnl_class *class = (struct rtnl_class *) obj; + struct nl_cache *cls_cache; + uint32_t parent = rtnl_class_get_handle(class); + + dump_params.dp_prefix = (int) arg; + nl_object_dump(obj, &dump_params); + + leaf = rtnl_class_leaf_qdisc(class, qdisc_cache); + if (leaf) + print_qdisc((struct nl_object *) leaf, arg + 2); + + rtnl_class_foreach_child(class, class_cache, &print_class, arg + 2); + + cls_cache = rtnl_cls_alloc_cache(nl_handle, ifindex, parent); + if (!cls_cache) + return; + + dump_params.dp_prefix = (int) arg + 2; + nl_cache_dump(cls_cache, &dump_params); + nl_cache_free(cls_cache); +} + +static void print_qdisc(struct nl_object *obj, void *arg) +{ + struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) obj; + struct nl_cache *cls_cache; + uint32_t parent = rtnl_qdisc_get_handle(qdisc); + + dump_params.dp_prefix = (int) arg; + nl_object_dump(obj, &dump_params); + + rtnl_qdisc_foreach_child(qdisc, class_cache, &print_class, arg + 2); + + cls_cache = rtnl_cls_alloc_cache(nl_handle, ifindex, parent); + if (!cls_cache) + return; + + dump_params.dp_prefix = (int) arg + 2; + nl_cache_dump(cls_cache, &dump_params); + nl_cache_free(cls_cache); +} + +static void print_link(struct nl_object *obj, void *arg) +{ + struct rtnl_link *link = (struct rtnl_link *) obj; + struct rtnl_qdisc *qdisc; + + ifindex = rtnl_link_get_ifindex(link); + dump_params.dp_prefix = 0; + nl_object_dump(obj, &dump_params); + + class_cache = rtnl_class_alloc_cache(nl_handle, ifindex); + if (!class_cache) + return; + + qdisc = rtnl_qdisc_get_by_parent(qdisc_cache, ifindex, TC_H_ROOT); + if (qdisc) { + print_qdisc((struct nl_object *) qdisc, (void *) 2); + rtnl_qdisc_put(qdisc); + } + + qdisc = rtnl_qdisc_get_by_parent(qdisc_cache, ifindex, 0); + if (qdisc) { + print_qdisc((struct nl_object *) qdisc, (void *) 2); + rtnl_qdisc_put(qdisc); + } + + qdisc = rtnl_qdisc_get_by_parent(qdisc_cache, ifindex, TC_H_INGRESS); + if (qdisc) { + print_qdisc((struct nl_object *) qdisc, (void *) 2); + rtnl_qdisc_put(qdisc); + } + + nl_cache_free(class_cache); +} + +int main(int argc, char *argv[]) +{ + struct nl_cache *link_cache; + + if (nltool_init(argc, argv) < 0) + return -1; + + dump_params.dp_fd = stdout; + + if (argc > 1) { + if (!strcasecmp(argv[1], "brief")) + dump_params.dp_type = NL_DUMP_BRIEF; + else if (!strcasecmp(argv[1], "full")) + dump_params.dp_type = NL_DUMP_FULL; + else if (!strcasecmp(argv[1], "stats")) + dump_params.dp_type = NL_DUMP_STATS; + } + + nl_handle = nl_handle_alloc_nondefault(nltool_cbset); + if (!nl_handle) + return 1; + + if (nltool_connect(nl_handle, NETLINK_ROUTE) < 0) + return 1; + + link_cache = nltool_alloc_link_cache(nl_handle); + if (!link_cache) + return 1; + + qdisc_cache = nltool_alloc_qdisc_cache(nl_handle); + if (!qdisc_cache) + return 1; + + nl_cache_foreach(link_cache, &print_link, NULL); + + nl_cache_free(qdisc_cache); + nl_cache_free(link_cache); + + nl_close(nl_handle); + nl_handle_destroy(nl_handle); + return 0; +} diff --git a/src/nl-util-addr.c b/src/nl-util-addr.c new file mode 100644 index 0000000..9f12795 --- /dev/null +++ b/src/nl-util-addr.c @@ -0,0 +1,41 @@ +/* + * src/nl-util-addr.c Address Helper + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +int main(int argc, char *argv[]) +{ + int err; + char host[256]; + struct nl_addr *a; + + if (argc < 2) { + fprintf(stderr, "Usage: nl-util-addr
\n"); + return -1; + } + + a = nl_addr_parse(argv[1], AF_UNSPEC); + if (a == NULL) { + fprintf(stderr, "Cannot parse address \"%s\"\n", argv[1]); + return -1; + } + + err = nl_addr_resolve(a, host, sizeof(host)); + if (err != 0) { + fprintf(stderr, "Cannot resolve address \"%s\": %d\n", + argv[1], err); + return -1; + } + + printf("%s\n", host); + + return 0; +} diff --git a/src/utils.c b/src/utils.c new file mode 100644 index 0000000..c00a300 --- /dev/null +++ b/src/utils.c @@ -0,0 +1,192 @@ +/* + * src/utils.c Utilities + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#include "utils.h" + +#include + +int nltool_cbset = NL_CB_VERBOSE; + +int nltool_init(int argc, char *argv[]) +{ + char *nlcb = getenv("NLCB"); + char *nldbg = getenv("NLDBG"); + + if (nlcb) { + if (!strcasecmp(nlcb, "default")) + nltool_cbset = NL_CB_DEFAULT; + else if (!strcasecmp(nlcb, "verbose")) + nltool_cbset = NL_CB_VERBOSE; + else if (!strcasecmp(nlcb, "debug")) + nltool_cbset = NL_CB_DEBUG; + else { + fprintf(stderr, "Unknown value for NLCB, valid values: " + "{default | verbose | debug}\n"); + goto errout; + } + } + + if (nldbg) { + long dbg = strtol(nldbg, NULL, 0); + + if (dbg == LONG_MIN || dbg == LONG_MAX) { + fprintf(stderr, "Invalid value for NLDBG.\n"); + goto errout; + } + + nl_debug = dbg; + } + + return 0; + +errout: + return -1; +} + +int nltool_connect(struct nl_handle *nlh, int protocol) +{ + int err; + + err = nl_connect(nlh, protocol); + if (err < 0) + fprintf(stderr, "Unable to connect netlink socket%s\n", + nl_geterror()); + + return err; +} + +struct nl_addr *nltool_addr_parse(const char *str) +{ + struct nl_addr *addr; + + addr = nl_addr_parse(str, AF_UNSPEC); + if (!addr) + fprintf(stderr, "Unable to parse address \"%s\": %s\n", + str, nl_geterror()); + + return addr; +} + +int nltool_parse_dumptype(const char *str) +{ + if (!strcasecmp(str, "brief")) + return NL_DUMP_BRIEF; + else if (!strcasecmp(str, "detailed")) + return NL_DUMP_FULL; + else if (!strcasecmp(str, "stats")) + return NL_DUMP_STATS; + else if (!strcasecmp(str, "xml")) + return NL_DUMP_XML; + else if (!strcasecmp(str, "env")) + return NL_DUMP_ENV; + else { + fprintf(stderr, "Invalid dump type \"%s\".\n", str); + return -1; + } +} + +struct nl_cache *nltool_alloc_link_cache(struct nl_handle *nlh) +{ + struct nl_cache *cache; + + cache = rtnl_link_alloc_cache(nlh); + if (!cache) + fprintf(stderr, "Unable to retrieve link cache: %s\n", + nl_geterror()); + else + nl_cache_mngt_provide(cache); + + return cache; +} + +struct nl_cache *nltool_alloc_addr_cache(struct nl_handle *nlh) +{ + struct nl_cache *cache; + + cache = rtnl_addr_alloc_cache(nlh); + if (!cache) + fprintf(stderr, "Unable to retrieve address cache: %s\n", + nl_geterror()); + else + nl_cache_mngt_provide(cache); + + return cache; +} + +struct nl_cache *nltool_alloc_neigh_cache(struct nl_handle *nlh) +{ + struct nl_cache *cache; + + cache = rtnl_neigh_alloc_cache(nlh); + if (!cache) + fprintf(stderr, "Unable to retrieve neighbour cache: %s\n", + nl_geterror()); + else + nl_cache_mngt_provide(cache); + + return cache; +} + +struct nl_cache *nltool_alloc_neightbl_cache(struct nl_handle *nlh) +{ + struct nl_cache *cache; + + cache = rtnl_neightbl_alloc_cache(nlh); + if (!cache) + fprintf(stderr, "Unable to retrieve neighbour table " + "cache: %s\n", nl_geterror()); + else + nl_cache_mngt_provide(cache); + + return cache; +} + +struct nl_cache *nltool_alloc_route_cache(struct nl_handle *nlh) +{ + struct nl_cache *cache; + + cache = rtnl_route_alloc_cache(nlh); + if (!cache) + fprintf(stderr, "Unable to retrieve route cache: %s\n", + nl_geterror()); + else + nl_cache_mngt_provide(cache); + + return cache; +} + +struct nl_cache *nltool_alloc_rule_cache(struct nl_handle *nlh) +{ + struct nl_cache *cache; + + cache = rtnl_rule_alloc_cache(nlh); + if (!cache) + fprintf(stderr, "Unable to retrieve rule cache: %s\n", + nl_geterror()); + else + nl_cache_mngt_provide(cache); + + return cache; +} + +struct nl_cache *nltool_alloc_qdisc_cache(struct nl_handle *nlh) +{ + struct nl_cache *cache; + + cache = rtnl_qdisc_alloc_cache(nlh); + if (!cache) + fprintf(stderr, "Unable to retrieve qdisc cache: %s\n", + nl_geterror()); + else + nl_cache_mngt_provide(cache); + + return cache; +} diff --git a/src/utils.h b/src/utils.h new file mode 100644 index 0000000..c12e463 --- /dev/null +++ b/src/utils.h @@ -0,0 +1,59 @@ +/* + * src/utils.h Utilities + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf + */ + +#ifndef __SRC_UTILS_H_ +#define __SRC_UTILS_H_ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +extern int nltool_init(int argc, char *argv[]); +extern int nltool_connect(struct nl_handle *nlh, int protocol); +extern struct nl_addr *nltool_addr_parse(const char *str); +extern int nltool_parse_dumptype(const char *str); + +extern struct nl_cache *nltool_alloc_link_cache(struct nl_handle *nlh); +extern struct nl_cache *nltool_alloc_addr_cache(struct nl_handle *nlh); +extern struct nl_cache *nltool_alloc_neigh_cache(struct nl_handle *nlh); +extern struct nl_cache *nltool_alloc_neightbl_cache(struct nl_handle *nlh); +extern struct nl_cache *nltool_alloc_route_cache(struct nl_handle *nlh); +extern struct nl_cache *nltool_alloc_rule_cache(struct nl_handle *nlh); +extern struct nl_cache *nltool_alloc_qdisc_cache(struct nl_handle *nlh); + +extern int nltool_cbset; + +#define arg_match(str) !strcasecmp(argv[idx], str) + +#endif