+++ /dev/null
-/*
- * tc_filter.c "tc filter".
- *
- * 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.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <net/if.h>
-#include <net/if_arp.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <string.h>
-#include <linux/if_ether.h>
-
-#include "rt_names.h"
-#include "utils.h"
-#include "tc_util.h"
-#include "tc_common.h"
-
-static void usage(void);
-
-static void usage(void)
-{
- fprintf(stderr, "Usage: tc filter [ add | del | change | get ] dev STRING\n");
- fprintf(stderr, " [ pref PRIO ] [ protocol PROTO ]\n");
- fprintf(stderr, " [ estimator INTERVAL TIME_CONSTANT ]\n");
- fprintf(stderr, " [ root | classid CLASSID ] [ handle FILTERID ]\n");
- fprintf(stderr, " [ [ FILTER_TYPE ] [ help | OPTIONS ] ]\n");
- fprintf(stderr, "\n");
- fprintf(stderr, " tc filter show [ dev STRING ] [ root | parent CLASSID ]\n");
- fprintf(stderr, "Where:\n");
- fprintf(stderr, "FILTER_TYPE := { rsvp | u32 | fw | route | etc. }\n");
- fprintf(stderr, "FILTERID := ... format depends on classifier, see there\n");
- fprintf(stderr, "OPTIONS := ... try tc filter add <desired FILTER_KIND> help\n");
- return;
-}
-
-
-int tc_filter_modify(int cmd, unsigned flags, int argc, char **argv)
-{
- struct {
- struct nlmsghdr n;
- struct tcmsg t;
- char buf[MAX_MSG];
- } req;
- struct filter_util *q = NULL;
- __u32 prio = 0;
- __u32 protocol = 0;
- char *fhandle = NULL;
- char d[16];
- char k[16];
- struct tc_estimator est;
-
- memset(&req, 0, sizeof(req));
- memset(&est, 0, sizeof(est));
- memset(d, 0, sizeof(d));
- memset(k, 0, sizeof(k));
- memset(&req, 0, sizeof(req));
-
- req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg));
- req.n.nlmsg_flags = NLM_F_REQUEST|flags;
- req.n.nlmsg_type = cmd;
- req.t.tcm_family = AF_UNSPEC;
-
- while (argc > 0) {
- if (strcmp(*argv, "dev") == 0) {
- NEXT_ARG();
- if (d[0])
- duparg("dev", *argv);
- strncpy(d, *argv, sizeof(d)-1);
- } else if (strcmp(*argv, "root") == 0) {
- if (req.t.tcm_parent) {
- fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
- return -1;
- }
- req.t.tcm_parent = TC_H_ROOT;
- } else if (strcmp(*argv, "parent") == 0) {
- __u32 handle;
- NEXT_ARG();
- if (req.t.tcm_parent)
- duparg("parent", *argv);
- if (get_tc_classid(&handle, *argv))
- invarg(*argv, "Invalid parent ID");
- req.t.tcm_parent = handle;
- } else if (strcmp(*argv, "handle") == 0) {
- NEXT_ARG();
- if (fhandle)
- duparg("handle", *argv);
- fhandle = *argv;
- } else if (matches(*argv, "preference") == 0 ||
- matches(*argv, "priority") == 0) {
- NEXT_ARG();
- if (prio)
- duparg("priority", *argv);
- if (get_u32(&prio, *argv, 0))
- invarg(*argv, "invalid prpriority value");
- } else if (matches(*argv, "protocol") == 0) {
- __u16 id;
- NEXT_ARG();
- if (protocol)
- duparg("protocol", *argv);
- if (ll_proto_a2n(&id, *argv))
- invarg(*argv, "invalid protocol");
- protocol = id;
- } else if (matches(*argv, "estimator") == 0) {
- if (parse_estimator(&argc, &argv, &est) < 0)
- return -1;
- } else if (matches(*argv, "help") == 0) {
- usage();
- } else {
- strncpy(k, *argv, sizeof(k)-1);
-
- q = get_filter_kind(k);
- argc--; argv++;
- break;
- }
-
- argc--; argv++;
- }
-
- req.t.tcm_info = TC_H_MAKE(prio<<16, protocol);
-
- if (k[0])
- addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);
-
- if (q) {
- if (q->parse_fopt(q, fhandle, argc, argv, &req.n))
- return 1;
- } else {
- if (fhandle) {
- fprintf(stderr, "Must specify filter type when using "
- "\"handle\"\n");
- return -1;
- }
- if (argc) {
- if (matches(*argv, "help") == 0)
- usage();
- fprintf(stderr, "Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n", *argv);
- return -1;
- }
- }
- if (est.ewma_log)
- addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));
-
-
- if (d[0]) {
- ll_init_map(&rth);
-
- if ((req.t.tcm_ifindex = ll_name_to_index(d)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", d);
- return 1;
- }
- }
-
- if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) {
- fprintf(stderr, "We have an error talking to the kernel\n");
- return 2;
- }
-
- return 0;
-}
-
-static __u32 filter_parent;
-static int filter_ifindex;
-static __u32 filter_prio;
-static __u32 filter_protocol;
-
-static int print_filter(const struct sockaddr_nl *who,
- struct nlmsghdr *n,
- void *arg)
-{
- FILE *fp = (FILE*)arg;
- struct tcmsg *t = NLMSG_DATA(n);
- int len = n->nlmsg_len;
- struct rtattr * tb[TCA_MAX+1];
- struct filter_util *q;
- char abuf[256];
-
- if (n->nlmsg_type != RTM_NEWTFILTER && n->nlmsg_type != RTM_DELTFILTER) {
- fprintf(stderr, "Not a filter\n");
- return 0;
- }
- len -= NLMSG_LENGTH(sizeof(*t));
- if (len < 0) {
- fprintf(stderr, "Wrong len %d\n", len);
- return -1;
- }
-
- memset(tb, 0, sizeof(tb));
- parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len);
-
- if (tb[TCA_KIND] == NULL) {
- fprintf(stderr, "print_filter: NULL kind\n");
- return -1;
- }
-
- if (n->nlmsg_type == RTM_DELTFILTER)
- fprintf(fp, "deleted ");
-
- fprintf(fp, "filter ");
- if (!filter_ifindex || filter_ifindex != t->tcm_ifindex)
- fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex));
-
- if (!filter_parent || filter_parent != t->tcm_parent) {
- if (t->tcm_parent == TC_H_ROOT)
- fprintf(fp, "root ");
- else {
- print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
- fprintf(fp, "parent %s ", abuf);
- }
- }
- if (t->tcm_info) {
- __u32 protocol = TC_H_MIN(t->tcm_info);
- __u32 prio = TC_H_MAJ(t->tcm_info)>>16;
- if (!filter_protocol || filter_protocol != protocol) {
- if (protocol) {
- SPRINT_BUF(b1);
- fprintf(fp, "protocol %s ",
- ll_proto_n2a(protocol, b1, sizeof(b1)));
- }
- }
- if (!filter_prio || filter_prio != prio) {
- if (prio)
- fprintf(fp, "pref %u ", prio);
- }
- }
- fprintf(fp, "%s ", (char*)RTA_DATA(tb[TCA_KIND]));
- q = get_filter_kind(RTA_DATA(tb[TCA_KIND]));
- if (tb[TCA_OPTIONS]) {
- if (q)
- q->print_fopt(q, fp, tb[TCA_OPTIONS], t->tcm_handle);
- else
- fprintf(fp, "[cannot parse parameters]");
- }
- fprintf(fp, "\n");
-
- if (show_stats && (tb[TCA_STATS] || tb[TCA_STATS2])) {
- print_tcstats_attr(fp, tb, " ", NULL);
- fprintf(fp, "\n");
- }
-
- fflush(fp);
- return 0;
-}
-
-
-int tc_filter_list(int argc, char **argv)
-{
- struct tcmsg t;
- char d[16];
- __u32 prio = 0;
- __u32 protocol = 0;
- char *fhandle = NULL;
-
- memset(&t, 0, sizeof(t));
- t.tcm_family = AF_UNSPEC;
- memset(d, 0, sizeof(d));
-
- while (argc > 0) {
- if (strcmp(*argv, "dev") == 0) {
- NEXT_ARG();
- if (d[0])
- duparg("dev", *argv);
- strncpy(d, *argv, sizeof(d)-1);
- } else if (strcmp(*argv, "root") == 0) {
- if (t.tcm_parent) {
- fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
- return -1;
- }
- filter_parent = t.tcm_parent = TC_H_ROOT;
- } else if (strcmp(*argv, "parent") == 0) {
- __u32 handle;
- NEXT_ARG();
- if (t.tcm_parent)
- duparg("parent", *argv);
- if (get_tc_classid(&handle, *argv))
- invarg(*argv, "invalid parent ID");
- filter_parent = t.tcm_parent = handle;
- } else if (strcmp(*argv, "handle") == 0) {
- NEXT_ARG();
- if (fhandle)
- duparg("handle", *argv);
- fhandle = *argv;
- } else if (matches(*argv, "preference") == 0 ||
- matches(*argv, "priority") == 0) {
- NEXT_ARG();
- if (prio)
- duparg("priority", *argv);
- if (get_u32(&prio, *argv, 0))
- invarg(*argv, "invalid preference");
- filter_prio = prio;
- } else if (matches(*argv, "protocol") == 0) {
- __u16 res;
- NEXT_ARG();
- if (protocol)
- duparg("protocol", *argv);
- if (ll_proto_a2n(&res, *argv))
- invarg(*argv, "invalid protocol");
- protocol = res;
- filter_protocol = protocol;
- } else if (matches(*argv, "help") == 0) {
- usage();
- } else {
- fprintf(stderr, " What is \"%s\"? Try \"tc filter help\"\n", *argv);
- return -1;
- }
-
- argc--; argv++;
- }
-
- t.tcm_info = TC_H_MAKE(prio<<16, protocol);
-
- ll_init_map(&rth);
-
- if (d[0]) {
- if ((t.tcm_ifindex = ll_name_to_index(d)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", d);
- return 1;
- }
- filter_ifindex = t.tcm_ifindex;
- }
-
- if (rtnl_dump_request(&rth, RTM_GETTFILTER, &t, sizeof(t)) < 0) {
- perror("Cannot send dump request");
- return 1;
- }
-
- if (rtnl_dump_filter(&rth, print_filter, stdout, NULL, NULL) < 0) {
- fprintf(stderr, "Dump terminated\n");
- return 1;
- }
-
- return 0;
-}
-
-int do_filter(int argc, char **argv)
-{
- if (argc < 1)
- return tc_filter_list(0, NULL);
- if (matches(*argv, "add") == 0)
- return tc_filter_modify(RTM_NEWTFILTER, NLM_F_EXCL|NLM_F_CREATE, argc-1, argv+1);
- if (matches(*argv, "change") == 0)
- return tc_filter_modify(RTM_NEWTFILTER, 0, argc-1, argv+1);
- if (matches(*argv, "replace") == 0)
- return tc_filter_modify(RTM_NEWTFILTER, NLM_F_CREATE, argc-1, argv+1);
- if (matches(*argv, "delete") == 0)
- return tc_filter_modify(RTM_DELTFILTER, 0, argc-1, argv+1);
-#if 0
- if (matches(*argv, "get") == 0)
- return tc_filter_get(RTM_GETTFILTER, 0, argc-1, argv+1);
-#endif
- if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
- || matches(*argv, "lst") == 0)
- return tc_filter_list(argc-1, argv+1);
- if (matches(*argv, "help") == 0)
- usage();
- fprintf(stderr, "Command \"%s\" is unknown, try \"tc filter help\".\n", *argv);
- return -1;
-}
-
git://git.onelab.eu / iproute2.git / blobdiff