2 * iproute.c "ip route".
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
21 #include <sys/socket.h>
22 #include <netinet/in.h>
23 #include <netinet/ip.h>
24 #include <arpa/inet.h>
25 #include <linux/in_route.h>
30 #include "ip_common.h"
33 #define RTAX_RTTVAR RTAX_HOPS
41 static const char *mx_names[RTAX_MAX+1] = {
43 [RTAX_WINDOW] = "window",
45 [RTAX_RTTVAR] = "rttvar",
46 [RTAX_SSTHRESH] = "ssthresh",
48 [RTAX_ADVMSS] = "advmss",
49 [RTAX_REORDERING]="reordering",
50 [RTAX_HOPLIMIT] = "hoplimit",
51 [RTAX_INITCWND] = "initcwnd",
52 [RTAX_FEATURES] = "features",
53 [RTAX_RTO_MIN] = "rto_min",
54 [RTAX_INITRWND] = "initrwnd",
56 static void usage(void) __attribute__((noreturn));
58 static void usage(void)
60 fprintf(stderr, "Usage: ip route { list | flush } SELECTOR\n");
61 fprintf(stderr, " ip route save SELECTOR\n");
62 fprintf(stderr, " ip route restore\n");
63 fprintf(stderr, " ip route get ADDRESS [ from ADDRESS iif STRING ]\n");
64 fprintf(stderr, " [ oif STRING ] [ tos TOS ]\n");
65 fprintf(stderr, " [ mark NUMBER ]\n");
66 fprintf(stderr, " ip route { add | del | change | append | replace } ROUTE\n");
67 fprintf(stderr, "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n");
68 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
69 fprintf(stderr, " [ type TYPE ] [ scope SCOPE ]\n");
70 fprintf(stderr, "ROUTE := NODE_SPEC [ INFO_SPEC ]\n");
71 fprintf(stderr, "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n");
72 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
73 fprintf(stderr, " [ scope SCOPE ] [ metric METRIC ]\n");
74 fprintf(stderr, "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n");
75 fprintf(stderr, "NH := [ via ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS\n");
76 fprintf(stderr, "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ]\n");
77 fprintf(stderr, " [ rtt TIME ] [ rttvar TIME ] [reordering NUMBER ]\n");
78 fprintf(stderr, " [ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n");
79 fprintf(stderr, " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n");
80 fprintf(stderr, " [ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]\n");
81 fprintf(stderr, "TYPE := [ unicast | local | broadcast | multicast | throw |\n");
82 fprintf(stderr, " unreachable | prohibit | blackhole | nat ]\n");
83 fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n");
84 fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n");
85 fprintf(stderr, "MP_ALGO := { rr | drr | random | wrandom }\n");
86 fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n");
87 fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n");
88 fprintf(stderr, "TIME := NUMBER[s|ms]\n");
101 int protocol, protocolmask;
102 int scope, scopemask;
108 int realm, realmmask;
109 inet_prefix rprefsrc;
117 static int flush_update(void)
119 if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
120 perror("Failed to send flush request");
127 int filter_nlmsg(struct nlmsghdr *n, struct rtattr **tb, int host_len)
129 struct rtmsg *r = NLMSG_DATA(n);
135 static int ip6_multiple_tables;
137 table = rtm_get_table(r, tb);
139 if (r->rtm_family == AF_INET6 && table != RT_TABLE_MAIN)
140 ip6_multiple_tables = 1;
142 if (filter.cloned == !(r->rtm_flags&RTM_F_CLONED))
145 if (r->rtm_family == AF_INET6 && !ip6_multiple_tables) {
147 if (filter.tb == RT_TABLE_LOCAL) {
148 if (r->rtm_type != RTN_LOCAL)
150 } else if (filter.tb == RT_TABLE_MAIN) {
151 if (r->rtm_type == RTN_LOCAL)
158 if (filter.tb > 0 && filter.tb != table)
161 if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
163 if ((filter.scope^r->rtm_scope)&filter.scopemask)
165 if ((filter.type^r->rtm_type)&filter.typemask)
167 if ((filter.tos^r->rtm_tos)&filter.tosmask)
169 if (filter.rdst.family &&
170 (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len))
172 if (filter.mdst.family &&
173 (r->rtm_family != filter.mdst.family ||
174 (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len)))
176 if (filter.rsrc.family &&
177 (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len))
179 if (filter.msrc.family &&
180 (r->rtm_family != filter.msrc.family ||
181 (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len)))
183 if (filter.rvia.family && r->rtm_family != filter.rvia.family)
185 if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
188 memset(&dst, 0, sizeof(dst));
189 dst.family = r->rtm_family;
191 memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
192 if (filter.rsrc.family || filter.msrc.family) {
193 memset(&src, 0, sizeof(src));
194 src.family = r->rtm_family;
196 memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
198 if (filter.rvia.bitlen>0) {
199 memset(&via, 0, sizeof(via));
200 via.family = r->rtm_family;
202 memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len/8);
204 if (filter.rprefsrc.bitlen>0) {
205 memset(&prefsrc, 0, sizeof(prefsrc));
206 prefsrc.family = r->rtm_family;
208 memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len/8);
211 if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
213 if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
214 inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
217 if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
219 if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
220 inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
223 if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
225 if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
227 if (filter.realmmask) {
230 realms = rta_getattr_u32(tb[RTA_FLOW]);
231 if ((realms^filter.realm)&filter.realmmask)
234 if (filter.iifmask) {
237 iif = *(int*)RTA_DATA(tb[RTA_IIF]);
238 if ((iif^filter.iif)&filter.iifmask)
241 if (filter.oifmask) {
244 oif = *(int*)RTA_DATA(tb[RTA_OIF]);
245 if ((oif^filter.oif)&filter.oifmask)
248 if (filter.markmask) {
251 mark = *(int *)RTA_DATA(tb[RTA_MARK]);
252 if ((mark ^ filter.mark) & filter.markmask)
256 r->rtm_family == AF_INET6 &&
257 r->rtm_dst_len == 0 &&
258 r->rtm_type == RTN_UNREACHABLE &&
260 *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
266 int calc_host_len(struct rtmsg *r)
268 if (r->rtm_family == AF_INET6)
270 else if (r->rtm_family == AF_INET)
272 else if (r->rtm_family == AF_DECnet)
274 else if (r->rtm_family == AF_IPX)
280 int print_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
282 FILE *fp = (FILE*)arg;
283 struct rtmsg *r = NLMSG_DATA(n);
284 int len = n->nlmsg_len;
285 struct rtattr * tb[RTA_MAX+1];
292 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
293 fprintf(stderr, "Not a route: %08x %08x %08x\n",
294 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
297 if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
299 len -= NLMSG_LENGTH(sizeof(*r));
301 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
305 host_len = calc_host_len(r);
307 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
308 table = rtm_get_table(r, tb);
310 if (!filter_nlmsg(n, tb, host_len))
315 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
319 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
320 memcpy(fn, n, n->nlmsg_len);
321 fn->nlmsg_type = RTM_DELROUTE;
322 fn->nlmsg_flags = NLM_F_REQUEST;
323 fn->nlmsg_seq = ++rth.seq;
324 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
330 if (n->nlmsg_type == RTM_DELROUTE)
331 fprintf(fp, "Deleted ");
332 if (r->rtm_type != RTN_UNICAST && !filter.type)
333 fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
336 if (r->rtm_dst_len != host_len) {
337 fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family,
338 RTA_PAYLOAD(tb[RTA_DST]),
339 RTA_DATA(tb[RTA_DST]),
344 fprintf(fp, "%s ", format_host(r->rtm_family,
345 RTA_PAYLOAD(tb[RTA_DST]),
346 RTA_DATA(tb[RTA_DST]),
350 } else if (r->rtm_dst_len) {
351 fprintf(fp, "0/%d ", r->rtm_dst_len);
353 fprintf(fp, "default ");
356 if (r->rtm_src_len != host_len) {
357 fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family,
358 RTA_PAYLOAD(tb[RTA_SRC]),
359 RTA_DATA(tb[RTA_SRC]),
364 fprintf(fp, "from %s ", format_host(r->rtm_family,
365 RTA_PAYLOAD(tb[RTA_SRC]),
366 RTA_DATA(tb[RTA_SRC]),
370 } else if (r->rtm_src_len) {
371 fprintf(fp, "from 0/%u ", r->rtm_src_len);
373 if (r->rtm_tos && filter.tosmask != -1) {
375 fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
378 if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
379 fprintf(fp, "via %s ",
380 format_host(r->rtm_family,
381 RTA_PAYLOAD(tb[RTA_GATEWAY]),
382 RTA_DATA(tb[RTA_GATEWAY]),
383 abuf, sizeof(abuf)));
385 if (tb[RTA_OIF] && filter.oifmask != -1)
386 fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
388 if (!(r->rtm_flags&RTM_F_CLONED)) {
389 if (table != RT_TABLE_MAIN && !filter.tb)
390 fprintf(fp, " table %s ", rtnl_rttable_n2a(table, b1, sizeof(b1)));
391 if (r->rtm_protocol != RTPROT_BOOT && filter.protocolmask != -1)
392 fprintf(fp, " proto %s ", rtnl_rtprot_n2a(r->rtm_protocol, b1, sizeof(b1)));
393 if (r->rtm_scope != RT_SCOPE_UNIVERSE && filter.scopemask != -1)
394 fprintf(fp, " scope %s ", rtnl_rtscope_n2a(r->rtm_scope, b1, sizeof(b1)));
396 if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
397 /* Do not use format_host(). It is our local addr
398 and symbolic name will not be useful.
400 fprintf(fp, " src %s ",
401 rt_addr_n2a(r->rtm_family,
402 RTA_PAYLOAD(tb[RTA_PREFSRC]),
403 RTA_DATA(tb[RTA_PREFSRC]),
404 abuf, sizeof(abuf)));
406 if (tb[RTA_PRIORITY])
407 fprintf(fp, " metric %u ", rta_getattr_u32(tb[RTA_PRIORITY]));
408 if (r->rtm_flags & RTNH_F_DEAD)
409 fprintf(fp, "dead ");
410 if (r->rtm_flags & RTNH_F_ONLINK)
411 fprintf(fp, "onlink ");
412 if (r->rtm_flags & RTNH_F_PERVASIVE)
413 fprintf(fp, "pervasive ");
414 if (r->rtm_flags & RTM_F_NOTIFY)
415 fprintf(fp, "notify ");
417 unsigned int mark = *(unsigned int*)RTA_DATA(tb[RTA_MARK]);
420 fprintf(fp, " mark 0x%x", mark);
422 fprintf(fp, " mark %u", mark);
426 if (tb[RTA_FLOW] && filter.realmmask != ~0U) {
427 __u32 to = rta_getattr_u32(tb[RTA_FLOW]);
430 fprintf(fp, "realm%s ", from ? "s" : "");
433 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
436 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
438 if ((r->rtm_flags&RTM_F_CLONED) && r->rtm_family == AF_INET) {
439 __u32 flags = r->rtm_flags&~0xFFFF;
442 fprintf(fp, "%s cache ", _SL_);
444 #define PRTFL(fl,flname) if (flags&RTCF_##fl) { \
445 flags &= ~RTCF_##fl; \
446 fprintf(fp, "%s" flname "%s", first ? "<" : "", flags ? "," : "> "); \
448 PRTFL(LOCAL, "local");
449 PRTFL(REJECT, "reject");
450 PRTFL(MULTICAST, "mc");
451 PRTFL(BROADCAST, "brd");
452 PRTFL(DNAT, "dst-nat");
453 PRTFL(SNAT, "src-nat");
455 PRTFL(DIRECTDST, "dst-direct");
456 PRTFL(DIRECTSRC, "src-direct");
457 PRTFL(REDIRECTED, "redirected");
458 PRTFL(DOREDIRECT, "redirect");
459 PRTFL(FAST, "fastroute");
460 PRTFL(NOTIFY, "notify");
461 PRTFL(TPROXY, "proxy");
464 fprintf(fp, "%s%x> ", first ? "<" : "", flags);
465 if (tb[RTA_CACHEINFO]) {
466 struct rta_cacheinfo *ci = RTA_DATA(tb[RTA_CACHEINFO]);
469 if (ci->rta_expires != 0)
470 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
471 if (ci->rta_error != 0)
472 fprintf(fp, " error %d", ci->rta_error);
475 fprintf(fp, " users %d", ci->rta_clntref);
476 if (ci->rta_used != 0)
477 fprintf(fp, " used %d", ci->rta_used);
478 if (ci->rta_lastuse != 0)
479 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
482 fprintf(fp, " ipid 0x%04x", ci->rta_id);
483 if (ci->rta_ts || ci->rta_tsage)
484 fprintf(fp, " ts 0x%x tsage %dsec",
485 ci->rta_ts, ci->rta_tsage);
487 } else if (r->rtm_family == AF_INET6) {
488 struct rta_cacheinfo *ci = NULL;
489 if (tb[RTA_CACHEINFO])
490 ci = RTA_DATA(tb[RTA_CACHEINFO]);
491 if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
494 if (r->rtm_flags & RTM_F_CLONED)
495 fprintf(fp, "%s cache ", _SL_);
497 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
498 if (ci->rta_error != 0)
499 fprintf(fp, " error %d", ci->rta_error);
502 fprintf(fp, " users %d", ci->rta_clntref);
503 if (ci->rta_used != 0)
504 fprintf(fp, " used %d", ci->rta_used);
505 if (ci->rta_lastuse != 0)
506 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
509 if (ci->rta_error != 0)
510 fprintf(fp, " error %d", ci->rta_error);
513 if (tb[RTA_METRICS]) {
516 struct rtattr *mxrta[RTAX_MAX+1];
518 parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(tb[RTA_METRICS]),
519 RTA_PAYLOAD(tb[RTA_METRICS]));
520 if (mxrta[RTAX_LOCK])
521 mxlock = *(unsigned*)RTA_DATA(mxrta[RTAX_LOCK]);
523 for (i=2; i<= RTAX_MAX; i++) {
526 if (mxrta[i] == NULL)
529 if (i < sizeof(mx_names)/sizeof(char*) && mx_names[i])
530 fprintf(fp, " %s", mx_names[i]);
532 fprintf(fp, " metric %d", i);
534 fprintf(fp, " lock");
536 val = *(unsigned*)RTA_DATA(mxrta[i]);
543 fprintf(fp, " %u", val);
551 else if (i == RTAX_RTTVAR)
555 fprintf(fp, " %gs", val/1e3);
557 fprintf(fp, " %ums", val);
561 if (tb[RTA_IIF] && filter.iifmask != -1) {
562 fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
564 if (tb[RTA_MULTIPATH]) {
565 struct rtnexthop *nh = RTA_DATA(tb[RTA_MULTIPATH]);
568 len = RTA_PAYLOAD(tb[RTA_MULTIPATH]);
571 if (len < sizeof(*nh))
573 if (nh->rtnh_len > len)
575 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
577 fprintf(fp, " Oifs:");
581 fprintf(fp, "%s\tnexthop", _SL_);
582 if (nh->rtnh_len > sizeof(*nh)) {
583 parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh), nh->rtnh_len - sizeof(*nh));
584 if (tb[RTA_GATEWAY]) {
585 fprintf(fp, " via %s ",
586 format_host(r->rtm_family,
587 RTA_PAYLOAD(tb[RTA_GATEWAY]),
588 RTA_DATA(tb[RTA_GATEWAY]),
589 abuf, sizeof(abuf)));
592 __u32 to = rta_getattr_u32(tb[RTA_FLOW]);
595 fprintf(fp, " realm%s ", from ? "s" : "");
598 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
601 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
604 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
605 fprintf(fp, " %s", ll_index_to_name(nh->rtnh_ifindex));
606 if (nh->rtnh_hops != 1)
607 fprintf(fp, "(ttl>%d)", nh->rtnh_hops);
609 fprintf(fp, " dev %s", ll_index_to_name(nh->rtnh_ifindex));
610 fprintf(fp, " weight %d", nh->rtnh_hops+1);
612 if (nh->rtnh_flags & RTNH_F_DEAD)
613 fprintf(fp, " dead");
614 if (nh->rtnh_flags & RTNH_F_ONLINK)
615 fprintf(fp, " onlink");
616 if (nh->rtnh_flags & RTNH_F_PERVASIVE)
617 fprintf(fp, " pervasive");
618 len -= NLMSG_ALIGN(nh->rtnh_len);
628 int parse_one_nh(struct rtattr *rta, struct rtnexthop *rtnh, int *argcp, char ***argvp)
631 char **argv = *argvp;
633 while (++argv, --argc > 0) {
634 if (strcmp(*argv, "via") == 0) {
636 rta_addattr32(rta, 4096, RTA_GATEWAY, get_addr32(*argv));
637 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
638 } else if (strcmp(*argv, "dev") == 0) {
640 if ((rtnh->rtnh_ifindex = ll_name_to_index(*argv)) == 0) {
641 fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
644 } else if (strcmp(*argv, "weight") == 0) {
647 if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
648 invarg("\"weight\" is invalid\n", *argv);
649 rtnh->rtnh_hops = w - 1;
650 } else if (strcmp(*argv, "onlink") == 0) {
651 rtnh->rtnh_flags |= RTNH_F_ONLINK;
652 } else if (matches(*argv, "realms") == 0) {
655 if (get_rt_realms(&realm, *argv))
656 invarg("\"realm\" value is invalid\n", *argv);
657 rta_addattr32(rta, 4096, RTA_FLOW, realm);
658 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
667 int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r, int argc, char **argv)
670 struct rtattr *rta = (void*)buf;
671 struct rtnexthop *rtnh;
673 rta->rta_type = RTA_MULTIPATH;
674 rta->rta_len = RTA_LENGTH(0);
675 rtnh = RTA_DATA(rta);
678 if (strcmp(*argv, "nexthop") != 0) {
679 fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
683 fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
686 memset(rtnh, 0, sizeof(*rtnh));
687 rtnh->rtnh_len = sizeof(*rtnh);
688 rta->rta_len += rtnh->rtnh_len;
689 parse_one_nh(rta, rtnh, &argc, &argv);
690 rtnh = RTNH_NEXT(rtnh);
693 if (rta->rta_len > RTA_LENGTH(0))
694 addattr_l(n, 1024, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta));
699 int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
707 struct rtattr * mxrta = (void*)mxbuf;
717 memset(&req, 0, sizeof(req));
719 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
720 req.n.nlmsg_flags = NLM_F_REQUEST|flags;
721 req.n.nlmsg_type = cmd;
722 req.r.rtm_family = preferred_family;
723 req.r.rtm_table = RT_TABLE_MAIN;
724 req.r.rtm_scope = RT_SCOPE_NOWHERE;
726 if (cmd != RTM_DELROUTE) {
727 req.r.rtm_protocol = RTPROT_BOOT;
728 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
729 req.r.rtm_type = RTN_UNICAST;
732 mxrta->rta_type = RTA_METRICS;
733 mxrta->rta_len = RTA_LENGTH(0);
736 if (strcmp(*argv, "src") == 0) {
739 get_addr(&addr, *argv, req.r.rtm_family);
740 if (req.r.rtm_family == AF_UNSPEC)
741 req.r.rtm_family = addr.family;
742 addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
743 } else if (strcmp(*argv, "via") == 0) {
747 get_addr(&addr, *argv, req.r.rtm_family);
748 if (req.r.rtm_family == AF_UNSPEC)
749 req.r.rtm_family = addr.family;
750 addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
751 } else if (strcmp(*argv, "from") == 0) {
754 get_prefix(&addr, *argv, req.r.rtm_family);
755 if (req.r.rtm_family == AF_UNSPEC)
756 req.r.rtm_family = addr.family;
758 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
759 req.r.rtm_src_len = addr.bitlen;
760 } else if (strcmp(*argv, "tos") == 0 ||
761 matches(*argv, "dsfield") == 0) {
764 if (rtnl_dsfield_a2n(&tos, *argv))
765 invarg("\"tos\" value is invalid\n", *argv);
767 } else if (matches(*argv, "metric") == 0 ||
768 matches(*argv, "priority") == 0 ||
769 matches(*argv, "preference") == 0) {
772 if (get_u32(&metric, *argv, 0))
773 invarg("\"metric\" value is invalid\n", *argv);
774 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
775 } else if (strcmp(*argv, "scope") == 0) {
778 if (rtnl_rtscope_a2n(&scope, *argv))
779 invarg("invalid \"scope\" value\n", *argv);
780 req.r.rtm_scope = scope;
782 } else if (strcmp(*argv, "mtu") == 0) {
785 if (strcmp(*argv, "lock") == 0) {
786 mxlock |= (1<<RTAX_MTU);
789 if (get_unsigned(&mtu, *argv, 0))
790 invarg("\"mtu\" value is invalid\n", *argv);
791 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
792 } else if (strcmp(*argv, "hoplimit") == 0) {
795 if (strcmp(*argv, "lock") == 0) {
796 mxlock |= (1<<RTAX_HOPLIMIT);
799 if (get_unsigned(&hoplimit, *argv, 0))
800 invarg("\"hoplimit\" value is invalid\n", *argv);
801 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit);
802 } else if (strcmp(*argv, "advmss") == 0) {
805 if (strcmp(*argv, "lock") == 0) {
806 mxlock |= (1<<RTAX_ADVMSS);
809 if (get_unsigned(&mss, *argv, 0))
810 invarg("\"mss\" value is invalid\n", *argv);
811 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
812 } else if (matches(*argv, "reordering") == 0) {
815 if (strcmp(*argv, "lock") == 0) {
816 mxlock |= (1<<RTAX_REORDERING);
819 if (get_unsigned(&reord, *argv, 0))
820 invarg("\"reordering\" value is invalid\n", *argv);
821 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
822 } else if (strcmp(*argv, "rtt") == 0) {
825 if (strcmp(*argv, "lock") == 0) {
826 mxlock |= (1<<RTAX_RTT);
829 if (get_time_rtt(&rtt, *argv, &raw))
830 invarg("\"rtt\" value is invalid\n", *argv);
831 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT,
832 (raw) ? rtt : rtt * 8);
833 } else if (strcmp(*argv, "rto_min") == 0) {
836 mxlock |= (1<<RTAX_RTO_MIN);
837 if (get_time_rtt(&rto_min, *argv, &raw))
838 invarg("\"rto_min\" value is invalid\n",
840 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN,
842 } else if (matches(*argv, "window") == 0) {
845 if (strcmp(*argv, "lock") == 0) {
846 mxlock |= (1<<RTAX_WINDOW);
849 if (get_unsigned(&win, *argv, 0))
850 invarg("\"window\" value is invalid\n", *argv);
851 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
852 } else if (matches(*argv, "cwnd") == 0) {
855 if (strcmp(*argv, "lock") == 0) {
856 mxlock |= (1<<RTAX_CWND);
859 if (get_unsigned(&win, *argv, 0))
860 invarg("\"cwnd\" value is invalid\n", *argv);
861 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
862 } else if (matches(*argv, "initcwnd") == 0) {
865 if (strcmp(*argv, "lock") == 0) {
866 mxlock |= (1<<RTAX_INITCWND);
869 if (get_unsigned(&win, *argv, 0))
870 invarg("\"initcwnd\" value is invalid\n", *argv);
871 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITCWND, win);
872 } else if (matches(*argv, "initrwnd") == 0) {
875 if (strcmp(*argv, "lock") == 0) {
876 mxlock |= (1<<RTAX_INITRWND);
879 if (get_unsigned(&win, *argv, 0))
880 invarg("\"initrwnd\" value is invalid\n", *argv);
881 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITRWND, win);
882 } else if (matches(*argv, "rttvar") == 0) {
885 if (strcmp(*argv, "lock") == 0) {
886 mxlock |= (1<<RTAX_RTTVAR);
889 if (get_time_rtt(&win, *argv, &raw))
890 invarg("\"rttvar\" value is invalid\n", *argv);
891 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR,
892 (raw) ? win : win * 4);
893 } else if (matches(*argv, "ssthresh") == 0) {
896 if (strcmp(*argv, "lock") == 0) {
897 mxlock |= (1<<RTAX_SSTHRESH);
900 if (get_unsigned(&win, *argv, 0))
901 invarg("\"ssthresh\" value is invalid\n", *argv);
902 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
903 } else if (matches(*argv, "realms") == 0) {
906 if (get_rt_realms(&realm, *argv))
907 invarg("\"realm\" value is invalid\n", *argv);
908 addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
909 } else if (strcmp(*argv, "onlink") == 0) {
910 req.r.rtm_flags |= RTNH_F_ONLINK;
911 } else if (strcmp(*argv, "nexthop") == 0) {
914 } else if (matches(*argv, "protocol") == 0) {
917 if (rtnl_rtprot_a2n(&prot, *argv))
918 invarg("\"protocol\" value is invalid\n", *argv);
919 req.r.rtm_protocol = prot;
920 } else if (matches(*argv, "table") == 0) {
923 if (rtnl_rttable_a2n(&tid, *argv))
924 invarg("\"table\" value is invalid\n", *argv);
926 req.r.rtm_table = tid;
928 req.r.rtm_table = RT_TABLE_UNSPEC;
929 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
932 } else if (strcmp(*argv, "dev") == 0 ||
933 strcmp(*argv, "oif") == 0) {
940 if (strcmp(*argv, "to") == 0) {
943 if ((**argv < '0' || **argv > '9') &&
944 rtnl_rtntype_a2n(&type, *argv) == 0) {
946 req.r.rtm_type = type;
949 if (matches(*argv, "help") == 0)
952 duparg2("to", *argv);
953 get_prefix(&dst, *argv, req.r.rtm_family);
954 if (req.r.rtm_family == AF_UNSPEC)
955 req.r.rtm_family = dst.family;
956 req.r.rtm_dst_len = dst.bitlen;
959 addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
970 if ((idx = ll_name_to_index(d)) == 0) {
971 fprintf(stderr, "Cannot find device \"%s\"\n", d);
974 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
978 if (mxrta->rta_len > RTA_LENGTH(0)) {
980 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
981 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
985 parse_nexthops(&req.n, &req.r, argc, argv);
988 if (req.r.rtm_type == RTN_LOCAL ||
989 req.r.rtm_type == RTN_BROADCAST ||
990 req.r.rtm_type == RTN_NAT ||
991 req.r.rtm_type == RTN_ANYCAST)
992 req.r.rtm_table = RT_TABLE_LOCAL;
995 if (req.r.rtm_type == RTN_LOCAL ||
996 req.r.rtm_type == RTN_NAT)
997 req.r.rtm_scope = RT_SCOPE_HOST;
998 else if (req.r.rtm_type == RTN_BROADCAST ||
999 req.r.rtm_type == RTN_MULTICAST ||
1000 req.r.rtm_type == RTN_ANYCAST)
1001 req.r.rtm_scope = RT_SCOPE_LINK;
1002 else if (req.r.rtm_type == RTN_UNICAST ||
1003 req.r.rtm_type == RTN_UNSPEC) {
1004 if (cmd == RTM_DELROUTE)
1005 req.r.rtm_scope = RT_SCOPE_NOWHERE;
1006 else if (!gw_ok && !nhs_ok)
1007 req.r.rtm_scope = RT_SCOPE_LINK;
1011 if (req.r.rtm_family == AF_UNSPEC)
1012 req.r.rtm_family = AF_INET;
1014 if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
1020 static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
1023 struct nlmsghdr nlh;
1026 struct sockaddr_nl nladdr;
1028 memset(&nladdr, 0, sizeof(nladdr));
1029 memset(&req, 0, sizeof(req));
1030 nladdr.nl_family = AF_NETLINK;
1032 req.nlh.nlmsg_len = sizeof(req);
1033 req.nlh.nlmsg_type = RTM_GETROUTE;
1034 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST;
1035 req.nlh.nlmsg_pid = 0;
1036 req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
1037 req.rtm.rtm_family = family;
1038 req.rtm.rtm_flags |= RTM_F_CLONED;
1040 return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
1043 static int iproute_flush_cache(void)
1045 #define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1048 int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY);
1049 char *buffer = "-1";
1052 fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH);
1056 len = strlen (buffer);
1058 if ((write (flush_fd, (void *)buffer, len)) < len) {
1059 fprintf (stderr, "Cannot flush routing cache\n");
1067 int save_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
1070 int len = n->nlmsg_len;
1071 struct rtmsg *r = NLMSG_DATA(n);
1072 struct rtattr *tb[RTA_MAX+1];
1075 if (isatty(STDOUT_FILENO)) {
1076 fprintf(stderr, "Not sending binary stream to stdout\n");
1080 host_len = calc_host_len(r);
1081 len -= NLMSG_LENGTH(sizeof(*r));
1082 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1084 if (!filter_nlmsg(n, tb, host_len))
1087 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
1088 if ((ret > 0) && (ret != n->nlmsg_len)) {
1089 fprintf(stderr, "Short write while saving nlmsg\n");
1093 return ret == n->nlmsg_len ? 0 : ret;
1096 static int iproute_list_flush_or_save(int argc, char **argv, int action)
1098 int do_ipv6 = preferred_family;
1101 unsigned int mark = 0;
1102 rtnl_filter_t filter_fn;
1104 if (action == IPROUTE_SAVE)
1105 filter_fn = save_route;
1107 filter_fn = print_route;
1109 iproute_reset_filter();
1110 filter.tb = RT_TABLE_MAIN;
1112 if ((action == IPROUTE_FLUSH) && argc <= 0) {
1113 fprintf(stderr, "\"ip route flush\" requires arguments.\n");
1118 if (matches(*argv, "table") == 0) {
1121 if (rtnl_rttable_a2n(&tid, *argv)) {
1122 if (strcmp(*argv, "all") == 0) {
1124 } else if (strcmp(*argv, "cache") == 0) {
1126 } else if (strcmp(*argv, "help") == 0) {
1129 invarg("table id value is invalid\n", *argv);
1133 } else if (matches(*argv, "cached") == 0 ||
1134 matches(*argv, "cloned") == 0) {
1136 } else if (strcmp(*argv, "tos") == 0 ||
1137 matches(*argv, "dsfield") == 0) {
1140 if (rtnl_dsfield_a2n(&tos, *argv))
1141 invarg("TOS value is invalid\n", *argv);
1143 filter.tosmask = -1;
1144 } else if (matches(*argv, "protocol") == 0) {
1147 filter.protocolmask = -1;
1148 if (rtnl_rtprot_a2n(&prot, *argv)) {
1149 if (strcmp(*argv, "all") != 0)
1150 invarg("invalid \"protocol\"\n", *argv);
1152 filter.protocolmask = 0;
1154 filter.protocol = prot;
1155 } else if (matches(*argv, "scope") == 0) {
1158 filter.scopemask = -1;
1159 if (rtnl_rtscope_a2n(&scope, *argv)) {
1160 if (strcmp(*argv, "all") != 0)
1161 invarg("invalid \"scope\"\n", *argv);
1162 scope = RT_SCOPE_NOWHERE;
1163 filter.scopemask = 0;
1165 filter.scope = scope;
1166 } else if (matches(*argv, "type") == 0) {
1169 filter.typemask = -1;
1170 if (rtnl_rtntype_a2n(&type, *argv))
1171 invarg("node type value is invalid\n", *argv);
1173 } else if (strcmp(*argv, "dev") == 0 ||
1174 strcmp(*argv, "oif") == 0) {
1177 } else if (strcmp(*argv, "iif") == 0) {
1180 } else if (strcmp(*argv, "mark") == 0) {
1182 get_unsigned(&mark, *argv, 0);
1183 filter.markmask = -1;
1184 } else if (strcmp(*argv, "via") == 0) {
1186 get_prefix(&filter.rvia, *argv, do_ipv6);
1187 } else if (strcmp(*argv, "src") == 0) {
1189 get_prefix(&filter.rprefsrc, *argv, do_ipv6);
1190 } else if (matches(*argv, "realms") == 0) {
1193 if (get_rt_realms(&realm, *argv))
1194 invarg("invalid realms\n", *argv);
1195 filter.realm = realm;
1196 filter.realmmask = ~0U;
1197 if ((filter.realm&0xFFFF) == 0 &&
1198 (*argv)[strlen(*argv) - 1] == '/')
1199 filter.realmmask &= ~0xFFFF;
1200 if ((filter.realm&0xFFFF0000U) == 0 &&
1201 (strchr(*argv, '/') == NULL ||
1203 filter.realmmask &= ~0xFFFF0000U;
1204 } else if (matches(*argv, "from") == 0) {
1206 if (matches(*argv, "root") == 0) {
1208 get_prefix(&filter.rsrc, *argv, do_ipv6);
1209 } else if (matches(*argv, "match") == 0) {
1211 get_prefix(&filter.msrc, *argv, do_ipv6);
1213 if (matches(*argv, "exact") == 0) {
1216 get_prefix(&filter.msrc, *argv, do_ipv6);
1217 filter.rsrc = filter.msrc;
1220 if (matches(*argv, "to") == 0) {
1223 if (matches(*argv, "root") == 0) {
1225 get_prefix(&filter.rdst, *argv, do_ipv6);
1226 } else if (matches(*argv, "match") == 0) {
1228 get_prefix(&filter.mdst, *argv, do_ipv6);
1230 if (matches(*argv, "exact") == 0) {
1233 get_prefix(&filter.mdst, *argv, do_ipv6);
1234 filter.rdst = filter.mdst;
1240 if (do_ipv6 == AF_UNSPEC && filter.tb)
1249 if ((idx = ll_name_to_index(id)) == 0) {
1250 fprintf(stderr, "Cannot find device \"%s\"\n", id);
1254 filter.iifmask = -1;
1257 if ((idx = ll_name_to_index(od)) == 0) {
1258 fprintf(stderr, "Cannot find device \"%s\"\n", od);
1262 filter.oifmask = -1;
1267 if (action == IPROUTE_FLUSH) {
1269 char flushb[4096-512];
1270 time_t start = time(0);
1272 if (filter.cloned) {
1273 if (do_ipv6 != AF_INET6) {
1274 iproute_flush_cache();
1276 printf("*** IPv4 routing cache is flushed.\n");
1278 if (do_ipv6 == AF_INET)
1282 filter.flushb = flushb;
1284 filter.flushe = sizeof(flushb);
1287 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1288 perror("Cannot send dump request");
1292 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
1293 fprintf(stderr, "Flush terminated\n");
1296 if (filter.flushed == 0) {
1298 if (round == 0 && (!filter.cloned || do_ipv6 == AF_INET6))
1299 printf("Nothing to flush.\n");
1301 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
1307 if (flush_update() < 0)
1310 if (time(0) - start > 30) {
1311 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1312 time(0) - start, filter.flushed);
1317 printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed);
1323 if (!filter.cloned) {
1324 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1325 perror("Cannot send dump request");
1329 if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
1330 perror("Cannot send dump request");
1335 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
1336 fprintf(stderr, "Dump terminated\n");
1344 int iproute_get(int argc, char **argv)
1355 unsigned int mark = 0;
1357 memset(&req, 0, sizeof(req));
1359 iproute_reset_filter();
1362 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
1363 req.n.nlmsg_flags = NLM_F_REQUEST;
1364 req.n.nlmsg_type = RTM_GETROUTE;
1365 req.r.rtm_family = preferred_family;
1366 req.r.rtm_table = 0;
1367 req.r.rtm_protocol = 0;
1368 req.r.rtm_scope = 0;
1370 req.r.rtm_src_len = 0;
1371 req.r.rtm_dst_len = 0;
1375 if (strcmp(*argv, "tos") == 0 ||
1376 matches(*argv, "dsfield") == 0) {
1379 if (rtnl_dsfield_a2n(&tos, *argv))
1380 invarg("TOS value is invalid\n", *argv);
1381 req.r.rtm_tos = tos;
1382 } else if (matches(*argv, "from") == 0) {
1385 if (matches(*argv, "help") == 0)
1388 get_prefix(&addr, *argv, req.r.rtm_family);
1389 if (req.r.rtm_family == AF_UNSPEC)
1390 req.r.rtm_family = addr.family;
1392 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
1393 req.r.rtm_src_len = addr.bitlen;
1394 } else if (matches(*argv, "iif") == 0) {
1397 } else if (matches(*argv, "mark") == 0) {
1399 get_unsigned(&mark, *argv, 0);
1400 } else if (matches(*argv, "oif") == 0 ||
1401 strcmp(*argv, "dev") == 0) {
1404 } else if (matches(*argv, "notify") == 0) {
1405 req.r.rtm_flags |= RTM_F_NOTIFY;
1406 } else if (matches(*argv, "connected") == 0) {
1410 if (strcmp(*argv, "to") == 0) {
1413 if (matches(*argv, "help") == 0)
1415 get_prefix(&addr, *argv, req.r.rtm_family);
1416 if (req.r.rtm_family == AF_UNSPEC)
1417 req.r.rtm_family = addr.family;
1419 addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
1420 req.r.rtm_dst_len = addr.bitlen;
1425 if (req.r.rtm_dst_len == 0) {
1426 fprintf(stderr, "need at least destination address\n");
1436 if ((idx = ll_name_to_index(idev)) == 0) {
1437 fprintf(stderr, "Cannot find device \"%s\"\n", idev);
1440 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
1443 if ((idx = ll_name_to_index(odev)) == 0) {
1444 fprintf(stderr, "Cannot find device \"%s\"\n", odev);
1447 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
1451 addattr32(&req.n, sizeof(req), RTA_MARK, mark);
1453 if (req.r.rtm_family == AF_UNSPEC)
1454 req.r.rtm_family = AF_INET;
1456 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0)
1459 if (connected && !from_ok) {
1460 struct rtmsg *r = NLMSG_DATA(&req.n);
1461 int len = req.n.nlmsg_len;
1462 struct rtattr * tb[RTA_MAX+1];
1464 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1465 fprintf(stderr, "An error :-)\n");
1469 if (req.n.nlmsg_type != RTM_NEWROUTE) {
1470 fprintf(stderr, "Not a route?\n");
1473 len -= NLMSG_LENGTH(sizeof(*r));
1475 fprintf(stderr, "Wrong len %d\n", len);
1479 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1481 if (tb[RTA_PREFSRC]) {
1482 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
1483 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
1484 } else if (!tb[RTA_SRC]) {
1485 fprintf(stderr, "Failed to connect the route\n");
1488 if (!odev && tb[RTA_OIF])
1489 tb[RTA_OIF]->rta_type = 0;
1490 if (tb[RTA_GATEWAY])
1491 tb[RTA_GATEWAY]->rta_type = 0;
1492 if (!idev && tb[RTA_IIF])
1493 tb[RTA_IIF]->rta_type = 0;
1494 req.n.nlmsg_flags = NLM_F_REQUEST;
1495 req.n.nlmsg_type = RTM_GETROUTE;
1497 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0)
1501 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1502 fprintf(stderr, "An error :-)\n");
1509 int restore_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n, void *arg)
1513 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
1517 ret = rtnl_talk(&rth, n, 0, 0, n);
1518 if ((ret < 0) && (errno == EEXIST))
1524 int iproute_restore(void)
1526 exit(rtnl_from_file(stdin, &restore_handler, NULL));
1529 void iproute_reset_filter()
1531 memset(&filter, 0, sizeof(filter));
1532 filter.mdst.bitlen = -1;
1533 filter.msrc.bitlen = -1;
1536 int do_iproute(int argc, char **argv)
1539 return iproute_list_flush_or_save(0, NULL, IPROUTE_LIST);
1541 if (matches(*argv, "add") == 0)
1542 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
1544 if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
1545 return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
1547 if (matches(*argv, "replace") == 0)
1548 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
1550 if (matches(*argv, "prepend") == 0)
1551 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
1553 if (matches(*argv, "append") == 0)
1554 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
1556 if (matches(*argv, "test") == 0)
1557 return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
1559 if (matches(*argv, "delete") == 0)
1560 return iproute_modify(RTM_DELROUTE, 0,
1562 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1563 || matches(*argv, "lst") == 0)
1564 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_LIST);
1565 if (matches(*argv, "get") == 0)
1566 return iproute_get(argc-1, argv+1);
1567 if (matches(*argv, "flush") == 0)
1568 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_FLUSH);
1569 if (matches(*argv, "save") == 0)
1570 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_SAVE);
1571 if (matches(*argv, "restore") == 0)
1572 return iproute_restore();
1573 if (matches(*argv, "help") == 0)
1575 fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);