+++ /dev/null
-/*
- * q_rsvp.c RSVP 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 <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <string.h>
-
-#include "rt_names.h"
-#include "utils.h"
-#include "tc_util.h"
-
-static void explain(void)
-{
- fprintf(stderr, "Usage: ... rsvp ipproto PROTOCOL session DST[/PORT | GPI ]\n");
- fprintf(stderr, " [ sender SRC[/PORT | GPI ]\n");
- fprintf(stderr, " [ classid CLASSID ] [ police POLICE_SPEC ]\n");
- fprintf(stderr, " [ tunnelid ID ] [ tunnel ID skip NUMBER ]\n");
- fprintf(stderr, "Where: GPI := { flowlabel NUMBER | spi/ah SPI | spi/esp SPI |\n");
- fprintf(stderr, " u{8|16|32} NUMBER mask MASK at OFFSET}\n");
- fprintf(stderr, " POLICE_SPEC := ... look at TBF\n");
- fprintf(stderr, " FILTERID := X:Y\n");
-}
-
-#define usage() return(-1)
-
-int get_addr_and_pi(int *argc_p, char ***argv_p, inet_prefix * addr,
- struct tc_rsvp_pinfo *pinfo, int dir, int family)
-{
- int argc = *argc_p;
- char **argv = *argv_p;
- char *p = strchr(*argv, '/');
- struct tc_rsvp_gpi *pi = dir ? &pinfo->dpi : &pinfo->spi;
-
- if (p) {
- __u16 tmp;
-
- if (get_u16(&tmp, p+1, 0))
- return -1;
-
- if (dir == 0) {
- /* Source port: u16 at offset 0 */
- pi->key = htonl(((__u32)tmp)<<16);
- pi->mask = htonl(0xFFFF0000);
- } else {
- /* Destination port: u16 at offset 2 */
- pi->key = htonl(((__u32)tmp));
- pi->mask = htonl(0x0000FFFF);
- }
- pi->offset = 0;
- *p = 0;
- }
- if (get_addr_1(addr, *argv, family))
- return -1;
- if (p)
- *p = '/';
-
- argc--; argv++;
-
- if (pi->mask || argc <= 0)
- goto done;
-
- if (strcmp(*argv, "spi/ah") == 0 ||
- strcmp(*argv, "gpi/ah") == 0) {
- __u32 gpi;
- NEXT_ARG();
- if (get_u32(&gpi, *argv, 0))
- return -1;
- pi->mask = htonl(0xFFFFFFFF);
- pi->key = htonl(gpi);
- pi->offset = 4;
- if (pinfo->protocol == 0)
- pinfo->protocol = IPPROTO_AH;
- argc--; argv++;
- } else if (strcmp(*argv, "spi/esp") == 0 ||
- strcmp(*argv, "gpi/esp") == 0) {
- __u32 gpi;
- NEXT_ARG();
- if (get_u32(&gpi, *argv, 0))
- return -1;
- pi->mask = htonl(0xFFFFFFFF);
- pi->key = htonl(gpi);
- pi->offset = 0;
- if (pinfo->protocol == 0)
- pinfo->protocol = IPPROTO_ESP;
- argc--; argv++;
- } else if (strcmp(*argv, "flowlabel") == 0) {
- __u32 flabel;
- NEXT_ARG();
- if (get_u32(&flabel, *argv, 0))
- return -1;
- if (family != AF_INET6)
- return -1;
- pi->mask = htonl(0x000FFFFF);
- pi->key = htonl(flabel) & pi->mask;
- pi->offset = -40;
- argc--; argv++;
- } else if (strcmp(*argv, "u32") == 0 ||
- strcmp(*argv, "u16") == 0 ||
- strcmp(*argv, "u8") == 0) {
- int sz = 1;
- __u32 tmp;
- __u32 mask = 0xff;
- if (strcmp(*argv, "u32") == 0) {
- sz = 4;
- mask = 0xffff;
- } else if (strcmp(*argv, "u16") == 0) {
- mask = 0xffffffff;
- sz = 2;
- }
- NEXT_ARG();
- if (get_u32(&tmp, *argv, 0))
- return -1;
- argc--; argv++;
- if (strcmp(*argv, "mask") == 0) {
- NEXT_ARG();
- if (get_u32(&mask, *argv, 16))
- return -1;
- argc--; argv++;
- }
- if (strcmp(*argv, "at") == 0) {
- NEXT_ARG();
- if (get_integer(&pi->offset, *argv, 0))
- return -1;
- argc--; argv++;
- }
- if (sz == 1) {
- if ((pi->offset & 3) == 0) {
- mask <<= 24;
- tmp <<= 24;
- } else if ((pi->offset & 3) == 1) {
- mask <<= 16;
- tmp <<= 16;
- } else if ((pi->offset & 3) == 3) {
- mask <<= 8;
- tmp <<= 8;
- }
- } else if (sz == 2) {
- if ((pi->offset & 3) == 0) {
- mask <<= 16;
- tmp <<= 16;
- }
- }
- pi->offset &= ~3;
- pi->mask = htonl(mask);
- pi->key = htonl(tmp) & pi->mask;
- }
-
-done:
- *argc_p = argc;
- *argv_p = argv;
- return 0;
-}
-
-
-static int rsvp_parse_opt(struct filter_util *qu, char *handle, int argc, char **argv, struct nlmsghdr *n)
-{
- int family = strcmp(qu->id, "rsvp") == 0 ? AF_INET : AF_INET6;
- struct tc_rsvp_pinfo pinfo;
- struct tc_police tp;
- struct tcmsg *t = NLMSG_DATA(n);
- int pinfo_ok = 0;
- struct rtattr *tail;
-
- memset(&pinfo, 0, sizeof(pinfo));
- memset(&tp, 0, sizeof(tp));
-
- if (handle) {
- if (get_u32(&t->tcm_handle, handle, 0)) {
- fprintf(stderr, "Illegal \"handle\"\n");
- return -1;
- }
- }
-
- if (argc == 0)
- return 0;
-
- tail = NLMSG_TAIL(n);
- addattr_l(n, 4096, TCA_OPTIONS, NULL, 0);
-
- while (argc > 0) {
- if (matches(*argv, "session") == 0) {
- inet_prefix addr;
- NEXT_ARG();
- if (get_addr_and_pi(&argc, &argv, &addr, &pinfo, 1, family)) {
- fprintf(stderr, "Illegal \"session\"\n");
- return -1;
- }
- addattr_l(n, 4096, TCA_RSVP_DST, &addr.data, addr.bytelen);
- if (pinfo.dpi.mask || pinfo.protocol)
- pinfo_ok++;
- continue;
- } else if (matches(*argv, "sender") == 0 ||
- matches(*argv, "flowspec") == 0) {
- inet_prefix addr;
- NEXT_ARG();
- if (get_addr_and_pi(&argc, &argv, &addr, &pinfo, 0, family)) {
- fprintf(stderr, "Illegal \"sender\"\n");
- return -1;
- }
- addattr_l(n, 4096, TCA_RSVP_SRC, &addr.data, addr.bytelen);
- if (pinfo.spi.mask || pinfo.protocol)
- pinfo_ok++;
- continue;
- } else if (matches("ipproto", *argv) == 0) {
- int num;
- NEXT_ARG();
- num = inet_proto_a2n(*argv);
- if (num < 0) {
- fprintf(stderr, "Illegal \"ipproto\"\n");
- return -1;
- }
- pinfo.protocol = num;
- pinfo_ok++;
- } else if (matches(*argv, "classid") == 0 ||
- strcmp(*argv, "flowid") == 0) {
- unsigned handle;
- NEXT_ARG();
- if (get_tc_classid(&handle, *argv)) {
- fprintf(stderr, "Illegal \"classid\"\n");
- return -1;
- }
- addattr_l(n, 4096, TCA_RSVP_CLASSID, &handle, 4);
- } else if (strcmp(*argv, "tunnelid") == 0) {
- unsigned tid;
- NEXT_ARG();
- if (get_unsigned(&tid, *argv, 0)) {
- fprintf(stderr, "Illegal \"tunnelid\"\n");
- return -1;
- }
- pinfo.tunnelid = tid;
- pinfo_ok++;
- } else if (strcmp(*argv, "tunnel") == 0) {
- unsigned tid;
- NEXT_ARG();
- if (get_unsigned(&tid, *argv, 0)) {
- fprintf(stderr, "Illegal \"tunnel\"\n");
- return -1;
- }
- addattr_l(n, 4096, TCA_RSVP_CLASSID, &tid, 4);
- NEXT_ARG();
- if (strcmp(*argv, "skip") == 0) {
- NEXT_ARG();
- }
- if (get_unsigned(&tid, *argv, 0)) {
- fprintf(stderr, "Illegal \"skip\"\n");
- return -1;
- }
- pinfo.tunnelhdr = tid;
- pinfo_ok++;
- } else if (matches(*argv, "police") == 0) {
- NEXT_ARG();
- if (parse_police(&argc, &argv, TCA_RSVP_POLICE, n)) {
- fprintf(stderr, "Illegal \"police\"\n");
- return -1;
- }
- continue;
- } else if (strcmp(*argv, "help") == 0) {
- explain();
- return -1;
- } else {
- fprintf(stderr, "What is \"%s\"?\n", *argv);
- explain();
- return -1;
- }
- argc--; argv++;
- }
-
- if (pinfo_ok)
- addattr_l(n, 4096, TCA_RSVP_PINFO, &pinfo, sizeof(pinfo));
- tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
- return 0;
-}
-
-static char * sprint_spi(struct tc_rsvp_gpi *pi, int dir, char *buf)
-{
- if (pi->offset == 0) {
- if (dir && pi->mask == htonl(0xFFFF)) {
- snprintf(buf, SPRINT_BSIZE-1, "/%d", htonl(pi->key));
- return buf;
- }
- if (!dir && pi->mask == htonl(0xFFFF0000)) {
- snprintf(buf, SPRINT_BSIZE-1, "/%d", htonl(pi->key)>>16);
- return buf;
- }
- if (pi->mask == htonl(0xFFFFFFFF)) {
- snprintf(buf, SPRINT_BSIZE-1, " spi/esp 0x%08x", htonl(pi->key));
- return buf;
- }
- } else if (pi->offset == 4 && pi->mask == htonl(0xFFFFFFFF)) {
- snprintf(buf, SPRINT_BSIZE-1, " spi/ah 0x%08x", htonl(pi->key));
- return buf;
- } else if (pi->offset == -40 && pi->mask == htonl(0x000FFFFF)) {
- snprintf(buf, SPRINT_BSIZE-1, " flowlabel 0x%05x", htonl(pi->key));
- return buf;
- }
- snprintf(buf, SPRINT_BSIZE-1, " u32 0x%08x mask %08x at %d",
- htonl(pi->key), htonl(pi->mask), pi->offset);
- return buf;
-}
-
-static int rsvp_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 handle)
-{
- int family = strcmp(qu->id, "rsvp") == 0 ? AF_INET : AF_INET6;
- struct rtattr *tb[TCA_RSVP_MAX+1];
- struct tc_rsvp_pinfo *pinfo = NULL;
-
- if (opt == NULL)
- return 0;
-
- parse_rtattr_nested(tb, TCA_RSVP_MAX, opt);
-
- if (handle)
- fprintf(f, "fh 0x%08x ", handle);
-
- if (tb[TCA_RSVP_PINFO]) {
- if (RTA_PAYLOAD(tb[TCA_RSVP_PINFO]) < sizeof(*pinfo))
- return -1;
-
- pinfo = RTA_DATA(tb[TCA_RSVP_PINFO]);
- }
-
- if (tb[TCA_RSVP_CLASSID]) {
- SPRINT_BUF(b1);
- if (!pinfo || pinfo->tunnelhdr == 0)
- fprintf(f, "flowid %s ", sprint_tc_classid(*(__u32*)RTA_DATA(tb[TCA_RSVP_CLASSID]), b1));
- else
- fprintf(f, "tunnel %d skip %d ", *(__u32*)RTA_DATA(tb[TCA_RSVP_CLASSID]), pinfo->tunnelhdr);
- } else if (pinfo && pinfo->tunnelhdr)
- fprintf(f, "tunnel [BAD] skip %d ", pinfo->tunnelhdr);
-
- if (tb[TCA_RSVP_DST]) {
- char buf[128];
- fprintf(f, "session ");
- if (inet_ntop(family, RTA_DATA(tb[TCA_RSVP_DST]), buf, sizeof(buf)) == 0)
- fprintf(f, " [INVALID DADDR] ");
- else
- fprintf(f, "%s", buf);
- if (pinfo && pinfo->dpi.mask) {
- SPRINT_BUF(b2);
- fprintf(f, "%s ", sprint_spi(&pinfo->dpi, 1, b2));
- } else
- fprintf(f, " ");
- } else {
- if (pinfo && pinfo->dpi.mask) {
- SPRINT_BUF(b2);
- fprintf(f, "session [NONE]%s ", sprint_spi(&pinfo->dpi, 1, b2));
- } else
- fprintf(f, "session NONE ");
- }
-
- if (pinfo && pinfo->protocol) {
- SPRINT_BUF(b1);
- fprintf(f, "ipproto %s ", inet_proto_n2a(pinfo->protocol, b1, sizeof(b1)));
- }
- if (pinfo && pinfo->tunnelid)
- fprintf(f, "tunnelid %d ", pinfo->tunnelid);
- if (tb[TCA_RSVP_SRC]) {
- char buf[128];
- fprintf(f, "sender ");
- if (inet_ntop(family, RTA_DATA(tb[TCA_RSVP_SRC]), buf, sizeof(buf)) == 0) {
- fprintf(f, "[BAD]");
- } else {
- fprintf(f, " %s", buf);
- }
- if (pinfo && pinfo->spi.mask) {
- SPRINT_BUF(b2);
- fprintf(f, "%s ", sprint_spi(&pinfo->spi, 0, b2));
- } else
- fprintf(f, " ");
- } else if (pinfo && pinfo->spi.mask) {
- SPRINT_BUF(b2);
- fprintf(f, "sender [NONE]%s ", sprint_spi(&pinfo->spi, 0, b2));
- }
- if (tb[TCA_RSVP_POLICE])
- tc_print_police(f, tb[TCA_RSVP_POLICE]);
- return 0;
-}
-
-struct filter_util rsvp_filter_util = {
- .id = "rsvp",
- .parse_fopt = rsvp_parse_opt,
- .print_fopt = rsvp_print_opt,
-};
-
-struct filter_util rsvp6_filter_util = {
- .id = "rsvp6",
- .parse_fopt = rsvp_parse_opt,
- .print_fopt = rsvp_print_opt,
-};
git://git.onelab.eu / iproute2.git / blobdiff