1 /* vi: set sw=4 ts=4: */
3 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
5 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
9 * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
10 * Kunihiro Ishiguro <kunihiro@zebra.org> 001102: rtnh_ifindex was not initialized
13 #include "ip_common.h" /* #include "libbb.h" is inside */
18 #define RTAX_RTTVAR RTAX_HOPS
28 struct rtnl_handle *rth;
29 //int protocol, protocolmask; - write-only fields?!
30 //int scope, scopemask; - unused
31 //int type; - read-only
32 //int typemask; - unused
33 //int tos, tosmask; - unused
36 //int realm, realmmask; - unused
37 //inet_prefix rprefsrc; - read-only
44 typedef struct filter_t filter_t;
46 #define G_filter (*(filter_t*)&bb_common_bufsiz1)
48 static int flush_update(void)
50 if (rtnl_send(G_filter.rth, G_filter.flushb, G_filter.flushp) < 0) {
51 bb_perror_msg("can't send flush request");
58 static unsigned get_hz(void)
60 static unsigned hz_internal;
66 fp = fopen_for_read("/proc/net/psched");
70 if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
76 hz_internal = sysconf(_SC_CLK_TCK);
80 static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
81 struct nlmsghdr *n, void *arg UNUSED_PARAM)
83 struct rtmsg *r = NLMSG_DATA(n);
84 int len = n->nlmsg_len;
85 struct rtattr *tb[RTA_MAX+1];
92 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
93 fprintf(stderr, "Not a route: %08x %08x %08x\n",
94 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
97 if (G_filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
99 len -= NLMSG_LENGTH(sizeof(*r));
101 bb_error_msg_and_die("wrong nlmsg len %d", len);
103 if (r->rtm_family == AF_INET6)
105 else if (r->rtm_family == AF_INET)
108 if (r->rtm_family == AF_INET6) {
110 if (G_filter.tb < 0) {
111 if (!(r->rtm_flags & RTM_F_CLONED)) {
115 if (r->rtm_flags & RTM_F_CLONED) {
118 if (G_filter.tb == RT_TABLE_LOCAL) {
119 if (r->rtm_type != RTN_LOCAL) {
122 } else if (G_filter.tb == RT_TABLE_MAIN) {
123 if (r->rtm_type == RTN_LOCAL) {
132 if (G_filter.tb > 0 && G_filter.tb != r->rtm_table) {
136 if (G_filter.rdst.family
137 && (r->rtm_family != G_filter.rdst.family || G_filter.rdst.bitlen > r->rtm_dst_len)
141 if (G_filter.mdst.family
142 && (r->rtm_family != G_filter.mdst.family
143 || (G_filter.mdst.bitlen >= 0 && G_filter.mdst.bitlen < r->rtm_dst_len)
148 if (G_filter.rsrc.family
149 && (r->rtm_family != G_filter.rsrc.family || G_filter.rsrc.bitlen > r->rtm_src_len)
153 if (G_filter.msrc.family
154 && (r->rtm_family != G_filter.msrc.family
155 || (G_filter.msrc.bitlen >= 0 && G_filter.msrc.bitlen < r->rtm_src_len)
161 memset(tb, 0, sizeof(tb));
162 memset(&src, 0, sizeof(src));
163 memset(&dst, 0, sizeof(dst));
164 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
167 src.bitlen = r->rtm_src_len;
168 src.bytelen = (r->rtm_family == AF_INET6 ? 16 : 4);
169 memcpy(src.data, RTA_DATA(tb[RTA_SRC]), src.bytelen);
172 dst.bitlen = r->rtm_dst_len;
173 dst.bytelen = (r->rtm_family == AF_INET6 ? 16 : 4);
174 memcpy(dst.data, RTA_DATA(tb[RTA_DST]), dst.bytelen);
177 if (G_filter.rdst.family
178 && inet_addr_match(&dst, &G_filter.rdst, G_filter.rdst.bitlen)
182 if (G_filter.mdst.family
183 && G_filter.mdst.bitlen >= 0
184 && inet_addr_match(&dst, &G_filter.mdst, r->rtm_dst_len)
188 if (G_filter.rsrc.family
189 && inet_addr_match(&src, &G_filter.rsrc, G_filter.rsrc.bitlen)
193 if (G_filter.msrc.family && G_filter.msrc.bitlen >= 0
194 && inet_addr_match(&src, &G_filter.msrc, r->rtm_src_len)
198 if (G_filter.oif != 0) {
201 if (G_filter.oif != *(int*)RTA_DATA(tb[RTA_OIF]))
205 if (G_filter.flushb) {
208 /* We are creating route flush commands */
210 if (r->rtm_family == AF_INET6
211 && r->rtm_dst_len == 0
212 && r->rtm_type == RTN_UNREACHABLE
214 && *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1
219 if (NLMSG_ALIGN(G_filter.flushp) + n->nlmsg_len > G_filter.flushe) {
221 bb_error_msg_and_die("flush");
223 fn = (void*)(G_filter.flushb + NLMSG_ALIGN(G_filter.flushp));
224 memcpy(fn, n, n->nlmsg_len);
225 fn->nlmsg_type = RTM_DELROUTE;
226 fn->nlmsg_flags = NLM_F_REQUEST;
227 fn->nlmsg_seq = ++G_filter.rth->seq;
228 G_filter.flushp = (((char*)fn) + n->nlmsg_len) - G_filter.flushb;
229 G_filter.flushed = 1;
233 /* We are printing routes */
235 if (n->nlmsg_type == RTM_DELROUTE) {
238 if (r->rtm_type != RTN_UNICAST /* && !G_filter.type - always 0 */) {
239 printf("%s ", rtnl_rtntype_n2a(r->rtm_type, b1));
243 if (r->rtm_dst_len != host_len) {
244 printf("%s/%u ", rt_addr_n2a(r->rtm_family,
245 RTA_DATA(tb[RTA_DST]),
250 printf("%s ", format_host(r->rtm_family,
251 RTA_PAYLOAD(tb[RTA_DST]),
252 RTA_DATA(tb[RTA_DST]),
256 } else if (r->rtm_dst_len) {
257 printf("0/%d ", r->rtm_dst_len);
262 if (r->rtm_src_len != host_len) {
263 printf("from %s/%u ", rt_addr_n2a(r->rtm_family,
264 RTA_DATA(tb[RTA_SRC]),
269 printf("from %s ", format_host(r->rtm_family,
270 RTA_PAYLOAD(tb[RTA_SRC]),
271 RTA_DATA(tb[RTA_SRC]),
275 } else if (r->rtm_src_len) {
276 printf("from 0/%u ", r->rtm_src_len);
278 if (tb[RTA_GATEWAY] && G_filter.rvia.bitlen != host_len) {
279 printf("via %s ", format_host(r->rtm_family,
280 RTA_PAYLOAD(tb[RTA_GATEWAY]),
281 RTA_DATA(tb[RTA_GATEWAY]),
282 abuf, sizeof(abuf)));
285 printf("dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
288 /* Todo: parse & show "proto kernel", "scope link" here */
290 if (tb[RTA_PREFSRC] && /*G_filter.rprefsrc.bitlen - always 0*/ 0 != host_len) {
291 /* Do not use format_host(). It is our local addr
292 and symbolic name will not be useful.
294 printf(" src %s ", rt_addr_n2a(r->rtm_family,
295 RTA_DATA(tb[RTA_PREFSRC]),
296 abuf, sizeof(abuf)));
298 if (tb[RTA_PRIORITY]) {
299 printf(" metric %d ", *(uint32_t*)RTA_DATA(tb[RTA_PRIORITY]));
301 if (r->rtm_family == AF_INET6) {
302 struct rta_cacheinfo *ci = NULL;
303 if (tb[RTA_CACHEINFO]) {
304 ci = RTA_DATA(tb[RTA_CACHEINFO]);
306 if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
307 if (r->rtm_flags & RTM_F_CLONED) {
308 printf("%c cache ", _SL_);
310 if (ci->rta_expires) {
311 printf(" expires %dsec", ci->rta_expires / get_hz());
313 if (ci->rta_error != 0) {
314 printf(" error %d", ci->rta_error);
317 if (ci->rta_error != 0)
318 printf(" error %d", ci->rta_error);
321 if (tb[RTA_IIF] && G_filter.iif == 0) {
322 printf(" iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
328 /* Return value becomes exitcode. It's okay to not return at all */
329 static int iproute_modify(int cmd, unsigned flags, char **argv)
331 static const char keywords[] ALIGN1 =
332 "src\0""via\0""mtu\0""lock\0""protocol\0"IF_FEATURE_IP_RULE("table\0")
333 "dev\0""oif\0""to\0""metric\0";
339 IF_FEATURE_IP_RULE(ARG_table,)
351 struct rtnl_handle rth;
358 struct rtattr * mxrta = (void*)mxbuf;
364 memset(&req, 0, sizeof(req));
366 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
367 req.n.nlmsg_flags = NLM_F_REQUEST | flags;
368 req.n.nlmsg_type = cmd;
369 req.r.rtm_family = preferred_family;
370 if (RT_TABLE_MAIN) /* if it is zero, memset already did it */
371 req.r.rtm_table = RT_TABLE_MAIN;
372 if (RT_SCOPE_NOWHERE)
373 req.r.rtm_scope = RT_SCOPE_NOWHERE;
375 if (cmd != RTM_DELROUTE) {
376 req.r.rtm_protocol = RTPROT_BOOT;
377 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
378 req.r.rtm_type = RTN_UNICAST;
381 mxrta->rta_type = RTA_METRICS;
382 mxrta->rta_len = RTA_LENGTH(0);
385 arg = index_in_substrings(keywords, *argv);
386 if (arg == ARG_src) {
389 get_addr(&addr, *argv, req.r.rtm_family);
390 if (req.r.rtm_family == AF_UNSPEC)
391 req.r.rtm_family = addr.family;
392 addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
393 } else if (arg == ARG_via) {
397 get_addr(&addr, *argv, req.r.rtm_family);
398 if (req.r.rtm_family == AF_UNSPEC) {
399 req.r.rtm_family = addr.family;
401 addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
402 } else if (arg == ARG_mtu) {
405 if (index_in_strings(keywords, *argv) == PARM_lock) {
406 mxlock |= (1 << RTAX_MTU);
409 mtu = get_unsigned(*argv, "mtu");
410 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
411 } else if (arg == ARG_protocol) {
414 if (rtnl_rtprot_a2n(&prot, *argv))
415 invarg(*argv, "protocol");
416 req.r.rtm_protocol = prot;
418 #if ENABLE_FEATURE_IP_RULE
419 } else if (arg == ARG_table) {
422 if (rtnl_rttable_a2n(&tid, *argv))
423 invarg(*argv, "table");
424 req.r.rtm_table = tid;
426 } else if (arg == ARG_dev || arg == ARG_oif) {
429 } else if (arg == ARG_metric) {
432 metric = get_u32(*argv, "metric");
433 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
441 if ((**argv < '0' || **argv > '9')
442 && rtnl_rtntype_a2n(&type, *argv) == 0
445 req.r.rtm_type = type;
450 duparg2("to", *argv);
452 get_prefix(&dst, *argv, req.r.rtm_family);
453 if (req.r.rtm_family == AF_UNSPEC) {
454 req.r.rtm_family = dst.family;
456 req.r.rtm_dst_len = dst.bitlen;
459 addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
473 idx = xll_name_to_index(d);
474 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
478 if (mxrta->rta_len > RTA_LENGTH(0)) {
480 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
482 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
485 if (req.r.rtm_type == RTN_LOCAL || req.r.rtm_type == RTN_NAT)
486 req.r.rtm_scope = RT_SCOPE_HOST;
488 if (req.r.rtm_type == RTN_BROADCAST
489 || req.r.rtm_type == RTN_MULTICAST
490 || req.r.rtm_type == RTN_ANYCAST
492 req.r.rtm_scope = RT_SCOPE_LINK;
494 else if (req.r.rtm_type == RTN_UNICAST || req.r.rtm_type == RTN_UNSPEC) {
495 if (cmd == RTM_DELROUTE)
496 req.r.rtm_scope = RT_SCOPE_NOWHERE;
497 else if (!(ok & gw_ok))
498 req.r.rtm_scope = RT_SCOPE_LINK;
501 if (req.r.rtm_family == AF_UNSPEC) {
502 req.r.rtm_family = AF_INET;
505 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) {
512 static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
518 struct sockaddr_nl nladdr;
520 memset(&nladdr, 0, sizeof(nladdr));
521 memset(&req, 0, sizeof(req));
522 nladdr.nl_family = AF_NETLINK;
524 req.nlh.nlmsg_len = sizeof(req);
526 req.nlh.nlmsg_type = RTM_GETROUTE;
527 if (NLM_F_ROOT | NLM_F_REQUEST)
528 req.nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_REQUEST;
529 /*req.nlh.nlmsg_pid = 0; - memset did it already */
530 req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
531 req.rtm.rtm_family = family;
533 req.rtm.rtm_flags = RTM_F_CLONED;
535 return xsendto(rth->fd, (void*)&req, sizeof(req), (struct sockaddr*)&nladdr, sizeof(nladdr));
538 static void iproute_flush_cache(void)
540 static const char fn[] ALIGN1 = "/proc/sys/net/ipv4/route/flush";
541 int flush_fd = open_or_warn(fn, O_WRONLY);
547 if (write(flush_fd, "-1", 2) < 2) {
548 bb_perror_msg("can't flush routing cache");
554 static void iproute_reset_filter(void)
556 memset(&G_filter, 0, sizeof(G_filter));
557 G_filter.mdst.bitlen = -1;
558 G_filter.msrc.bitlen = -1;
561 /* Return value becomes exitcode. It's okay to not return at all */
562 static int iproute_list_or_flush(char **argv, int flush)
564 int do_ipv6 = preferred_family;
565 struct rtnl_handle rth;
568 static const char keywords[] ALIGN1 =
569 /* "ip route list/flush" parameters: */
570 "protocol\0" "dev\0" "oif\0" "iif\0"
571 "via\0" "table\0" "cache\0"
573 /* and possible further keywords */
581 KW_proto, KW_dev, KW_oif, KW_iif,
582 KW_via, KW_table, KW_cache,
593 iproute_reset_filter();
594 G_filter.tb = RT_TABLE_MAIN;
597 bb_error_msg_and_die(bb_msg_requires_arg, "\"ip route flush\"");
600 arg = index_in_substrings(keywords, *argv);
601 if (arg == KW_proto) {
604 //G_filter.protocolmask = -1;
605 if (rtnl_rtprot_a2n(&prot, *argv)) {
606 if (index_in_strings(keywords, *argv) != KW_all)
607 invarg(*argv, "protocol");
609 //G_filter.protocolmask = 0;
611 //G_filter.protocol = prot;
612 } else if (arg == KW_dev || arg == KW_oif) {
615 } else if (arg == KW_iif) {
618 } else if (arg == KW_via) {
620 get_prefix(&G_filter.rvia, *argv, do_ipv6);
621 } else if (arg == KW_table) { /* table all/cache/main */
623 parm = index_in_substrings(keywords, *argv);
624 if (parm == KW_cache)
626 else if (parm == KW_all)
628 else if (parm != KW_main) {
629 #if ENABLE_FEATURE_IP_RULE
631 if (rtnl_rttable_a2n(&tid, *argv))
632 invarg(*argv, "table");
635 invarg(*argv, "table");
638 } else if (arg == KW_cache) {
639 /* The command 'ip route flush cache' is used by OpenSWAN.
640 * Assuming it's a synonym for 'ip route flush table cache' */
642 } else if (arg == KW_from) {
644 parm = index_in_substrings(keywords, *argv);
645 if (parm == KW_root) {
647 get_prefix(&G_filter.rsrc, *argv, do_ipv6);
648 } else if (parm == KW_match) {
650 get_prefix(&G_filter.msrc, *argv, do_ipv6);
652 if (parm == KW_exact)
654 get_prefix(&G_filter.msrc, *argv, do_ipv6);
655 G_filter.rsrc = G_filter.msrc;
657 } else { /* "to" is the default parameter */
660 arg = index_in_substrings(keywords, *argv);
662 /* parm = arg; - would be more plausible, but we reuse 'arg' here */
663 if (arg == KW_root) {
665 get_prefix(&G_filter.rdst, *argv, do_ipv6);
666 } else if (arg == KW_match) {
668 get_prefix(&G_filter.mdst, *argv, do_ipv6);
669 } else { /* "to exact" is the default */
672 get_prefix(&G_filter.mdst, *argv, do_ipv6);
673 G_filter.rdst = G_filter.mdst;
679 if (do_ipv6 == AF_UNSPEC && G_filter.tb) {
690 idx = xll_name_to_index(id);
694 idx = xll_name_to_index(od);
700 char flushb[4096-512];
702 if (G_filter.tb == -1) { /* "flush table cache" */
703 if (do_ipv6 != AF_INET6)
704 iproute_flush_cache();
705 if (do_ipv6 == AF_INET)
709 G_filter.flushb = flushb;
711 G_filter.flushe = sizeof(flushb);
715 xrtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE);
716 G_filter.flushed = 0;
717 xrtnl_dump_filter(&rth, print_route, NULL);
718 if (G_filter.flushed == 0)
725 if (G_filter.tb != -1) {
726 xrtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE);
727 } else if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
728 bb_perror_msg_and_die("can't send dump request");
730 xrtnl_dump_filter(&rth, print_route, NULL);
736 /* Return value becomes exitcode. It's okay to not return at all */
737 static int iproute_get(char **argv)
739 struct rtnl_handle rth;
749 static const char options[] ALIGN1 =
750 "from\0""iif\0""oif\0""dev\0""notify\0""connected\0""to\0";
752 memset(&req, 0, sizeof(req));
754 iproute_reset_filter();
756 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
758 req.n.nlmsg_flags = NLM_F_REQUEST;
760 req.n.nlmsg_type = RTM_GETROUTE;
761 req.r.rtm_family = preferred_family;
762 /*req.r.rtm_table = 0; - memset did this already */
763 /*req.r.rtm_protocol = 0;*/
764 /*req.r.rtm_scope = 0;*/
765 /*req.r.rtm_type = 0;*/
766 /*req.r.rtm_src_len = 0;*/
767 /*req.r.rtm_dst_len = 0;*/
768 /*req.r.rtm_tos = 0;*/
771 switch (index_in_strings(options, *argv)) {
777 get_prefix(&addr, *argv, req.r.rtm_family);
778 if (req.r.rtm_family == AF_UNSPEC) {
779 req.r.rtm_family = addr.family;
782 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
784 req.r.rtm_src_len = addr.bitlen;
797 req.r.rtm_flags |= RTM_F_NOTIFY;
799 case 5: /* connected */
807 get_prefix(&addr, *argv, req.r.rtm_family);
808 if (req.r.rtm_family == AF_UNSPEC) {
809 req.r.rtm_family = addr.family;
812 addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
814 req.r.rtm_dst_len = addr.bitlen;
820 if (req.r.rtm_dst_len == 0) {
821 bb_error_msg_and_die("need at least destination address");
832 idx = xll_name_to_index(idev);
833 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
836 idx = xll_name_to_index(odev);
837 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
841 if (req.r.rtm_family == AF_UNSPEC) {
842 req.r.rtm_family = AF_INET;
845 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0) {
849 if (connected && !from_ok) {
850 struct rtmsg *r = NLMSG_DATA(&req.n);
851 int len = req.n.nlmsg_len;
852 struct rtattr * tb[RTA_MAX+1];
854 print_route(NULL, &req.n, NULL);
856 if (req.n.nlmsg_type != RTM_NEWROUTE) {
857 bb_error_msg_and_die("not a route?");
859 len -= NLMSG_LENGTH(sizeof(*r));
861 bb_error_msg_and_die("wrong len %d", len);
864 memset(tb, 0, sizeof(tb));
865 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
867 if (tb[RTA_PREFSRC]) {
868 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
869 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
870 } else if (!tb[RTA_SRC]) {
871 bb_error_msg_and_die("can't connect the route");
873 if (!odev && tb[RTA_OIF]) {
874 tb[RTA_OIF]->rta_type = 0;
876 if (tb[RTA_GATEWAY]) {
877 tb[RTA_GATEWAY]->rta_type = 0;
879 if (!idev && tb[RTA_IIF]) {
880 tb[RTA_IIF]->rta_type = 0;
882 req.n.nlmsg_flags = NLM_F_REQUEST;
883 req.n.nlmsg_type = RTM_GETROUTE;
885 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0) {
889 print_route(NULL, &req.n, NULL);
893 /* Return value becomes exitcode. It's okay to not return at all */
894 int FAST_FUNC do_iproute(char **argv)
896 static const char ip_route_commands[] ALIGN1 =
897 /*0-3*/ "add\0""append\0""change\0""chg\0"
898 /*4-7*/ "delete\0""get\0""list\0""show\0"
899 /*8..*/ "prepend\0""replace\0""test\0""flush\0";
902 int cmd = RTM_NEWROUTE;
905 return iproute_list_or_flush(argv, 0);
907 /* "Standard" 'ip r a' treats 'a' as 'add', not 'append' */
908 /* It probably means that it is using "first match" rule */
909 command_num = index_in_substrings(ip_route_commands, *argv);
911 switch (command_num) {
913 flags = NLM_F_CREATE|NLM_F_EXCL;
916 flags = NLM_F_CREATE|NLM_F_APPEND;
920 flags = NLM_F_REPLACE;
926 return iproute_get(argv+1);
929 return iproute_list_or_flush(argv+1, 0);
930 case 8: /* prepend */
931 flags = NLM_F_CREATE;
933 case 9: /* replace */
934 flags = NLM_F_CREATE|NLM_F_REPLACE;
940 return iproute_list_or_flush(argv+1, 1);
942 bb_error_msg_and_die("unknown command %s", *argv);
945 return iproute_modify(cmd, flags, argv+1);