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aba5acdf
SH		 1/*
2 * iproute.c "ip route".
3 *
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.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 *
aba5acdf
SH		 11 */
12
13#include <stdio.h>
14#include <stdlib.h>
15#include <unistd.h>
16#include <syslog.h>
17#include <fcntl.h>
18#include <string.h>
33551240 19#include <time.h>
aba5acdf
SH		 20#include <sys/time.h>
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>
f4ff11e3 26#include <errno.h>
aba5acdf
SH		 27
28#include "rt_names.h"
29#include "utils.h"
30#include "ip_common.h"
31
32#ifndef RTAX_RTTVAR
33#define RTAX_RTTVAR RTAX_HOPS
34#endif
35
f4ff11e3
DS		 36enum list_action {
37 IPROUTE_LIST,
38 IPROUTE_FLUSH,
39 IPROUTE_SAVE,
40};
f38c7334
SH		 41static const char *mx_names[RTAX_MAX+1] = {
42 [RTAX_MTU] = "mtu",
43 [RTAX_WINDOW] = "window",
44 [RTAX_RTT] = "rtt",
45 [RTAX_RTTVAR] = "rttvar",
46 [RTAX_SSTHRESH] = "ssthresh",
47 [RTAX_CWND] = "cwnd",
48 [RTAX_ADVMSS] = "advmss",
49 [RTAX_REORDERING]="reordering",
50 [RTAX_HOPLIMIT] = "hoplimit",
51 [RTAX_INITCWND] = "initcwnd",
52 [RTAX_FEATURES] = "features",
54e0b2e7 53 [RTAX_RTO_MIN] = "rto_min",
f5fd8003 54 [RTAX_INITRWND] = "initrwnd",
b37f2c89 55 [RTAX_QUICKACK] = "quickack",
6ef87f9c 56 [RTAX_CC_ALGO] = "congctl",
f38c7334 57};
aba5acdf
SH		 58static void usage(void) __attribute__((noreturn));
59
60static void usage(void)
61{
62 fprintf(stderr, "Usage: ip route { list | flush } SELECTOR\n");
f4ff11e3
DS		 63 fprintf(stderr, " ip route save SELECTOR\n");
64 fprintf(stderr, " ip route restore\n");
93b79863 65 fprintf(stderr, " ip route showdump\n");
aba5acdf 66 fprintf(stderr, " ip route get ADDRESS [ from ADDRESS iif STRING ]\n");
8f480637 67 fprintf(stderr, " [ oif STRING ] [ tos TOS ]\n");
b0373bfb 68 fprintf(stderr, " [ mark NUMBER ]\n");
c0c44bfe 69 fprintf(stderr, " ip route { add | del | change | append | replace } ROUTE\n");
aba5acdf
SH		 70 fprintf(stderr, "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n");
71 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
72 fprintf(stderr, " [ type TYPE ] [ scope SCOPE ]\n");
73 fprintf(stderr, "ROUTE := NODE_SPEC [ INFO_SPEC ]\n");
74 fprintf(stderr, "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n");
75 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
76 fprintf(stderr, " [ scope SCOPE ] [ metric METRIC ]\n");
77 fprintf(stderr, "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n");
78 fprintf(stderr, "NH := [ via ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS\n");
79 fprintf(stderr, "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ]\n");
8f480637 80 fprintf(stderr, " [ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]\n");
a1f1143e 81 fprintf(stderr, " [ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n");
576c63ee 82 fprintf(stderr, " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n");
f5fd8003 83 fprintf(stderr, " [ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]\n");
6ef87f9c 84 fprintf(stderr, " [ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]\n");
aba5acdf
SH		 85 fprintf(stderr, "TYPE := [ unicast | local | broadcast | multicast | throw |\n");
86 fprintf(stderr, " unreachable | prohibit | blackhole | nat ]\n");
87 fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n");
88 fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n");
aba5acdf
SH		 89 fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n");
90 fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n");
9b2cdc00 91 fprintf(stderr, "TIME := NUMBER[s|ms]\n");
b37f2c89 92 fprintf(stderr, "BOOL := [1|0]\n");
29d1f730 93 fprintf(stderr, "FEATURES := ecn\n");
aba5acdf
SH		 94 exit(-1);
95}
96
97
98static struct
99{
caae16b3 100 unsigned int tb;
bd4bcdad 101 int cloned;
aba5acdf
SH		 102 int flushed;
103 char *flushb;
104 int flushp;
105 int flushe;
aba5acdf
SH		 106 int protocol, protocolmask;
107 int scope, scopemask;
108 int type, typemask;
109 int tos, tosmask;
110 int iif, iifmask;
111 int oif, oifmask;
b0373bfb 112 int mark, markmask;
aba5acdf
SH		 113 int realm, realmmask;
114 inet_prefix rprefsrc;
115 inet_prefix rvia;
116 inet_prefix rdst;
117 inet_prefix mdst;
118 inet_prefix rsrc;
119 inet_prefix msrc;
120} filter;
121
122static int flush_update(void)
123{
f31a37f7 124 if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
1fb0a998 125 perror("Failed to send flush request");
aba5acdf
SH		 126 return -1;
127 }
128 filter.flushp = 0;
129 return 0;
130}
131
d1f28cf1 132static int filter_nlmsg(struct nlmsghdr *n, struct rtattr **tb, int host_len)
aba5acdf 133{
aba5acdf 134 struct rtmsg *r = NLMSG_DATA(n);
aba5acdf
SH		 135 inet_prefix dst;
136 inet_prefix src;
aba5acdf 137 inet_prefix via;
f4ff11e3 138 inet_prefix prefsrc;
34e95647 139 __u32 table;
f4ff11e3 140 static int ip6_multiple_tables;
aba5acdf 141
34e95647
PM		 142 table = rtm_get_table(r, tb);
143
144 if (r->rtm_family == AF_INET6 && table != RT_TABLE_MAIN)
e0b29fe7
PM		 145 ip6_multiple_tables = 1;
146
44792827
UW		 147 if (filter.cloned == !(r->rtm_flags&RTM_F_CLONED))
148 return 0;
149
e0b29fe7 150 if (r->rtm_family == AF_INET6 && !ip6_multiple_tables) {
aba5acdf 151 if (filter.tb) {
bd4bcdad
PM		 152 if (filter.tb == RT_TABLE_LOCAL) {
153 if (r->rtm_type != RTN_LOCAL)
aba5acdf 154 return 0;
bd4bcdad
PM		 155 } else if (filter.tb == RT_TABLE_MAIN) {
156 if (r->rtm_type == RTN_LOCAL)
aba5acdf 157 return 0;
bd4bcdad
PM		 158 } else {
159 return 0;
aba5acdf
SH		 160 }
161 }
162 } else {
34e95647 163 if (filter.tb > 0 && filter.tb != table)
aba5acdf
SH		 164 return 0;
165 }
166 if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
167 return 0;
168 if ((filter.scope^r->rtm_scope)&filter.scopemask)
169 return 0;
170 if ((filter.type^r->rtm_type)&filter.typemask)
171 return 0;
172 if ((filter.tos^r->rtm_tos)&filter.tosmask)
173 return 0;
174 if (filter.rdst.family &&
175 (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len))
176 return 0;
177 if (filter.mdst.family &&
178 (r->rtm_family != filter.mdst.family ||
179 (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len)))
180 return 0;
181 if (filter.rsrc.family &&
182 (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len))
183 return 0;
184 if (filter.msrc.family &&
185 (r->rtm_family != filter.msrc.family ||
186 (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len)))
187 return 0;
188 if (filter.rvia.family && r->rtm_family != filter.rvia.family)
189 return 0;
190 if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
191 return 0;
192
aba5acdf
SH		 193 memset(&dst, 0, sizeof(dst));
194 dst.family = r->rtm_family;
195 if (tb[RTA_DST])
196 memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
197 if (filter.rsrc.family || filter.msrc.family) {
198 memset(&src, 0, sizeof(src));
199 src.family = r->rtm_family;
200 if (tb[RTA_SRC])
201 memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
202 }
203 if (filter.rvia.bitlen>0) {
204 memset(&via, 0, sizeof(via));
205 via.family = r->rtm_family;
206 if (tb[RTA_GATEWAY])
7849fb55 207 memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len/8);
aba5acdf
SH		 208 }
209 if (filter.rprefsrc.bitlen>0) {
210 memset(&prefsrc, 0, sizeof(prefsrc));
211 prefsrc.family = r->rtm_family;
212 if (tb[RTA_PREFSRC])
7849fb55 213 memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len/8);
aba5acdf
SH		 214 }
215
216 if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
217 return 0;
218 if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
219 inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
220 return 0;
221
222 if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
223 return 0;
224 if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
225 inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
226 return 0;
227
228 if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
229 return 0;
230 if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
231 return 0;
232 if (filter.realmmask) {
233 __u32 realms = 0;
234 if (tb[RTA_FLOW])
ff24746c 235 realms = rta_getattr_u32(tb[RTA_FLOW]);
aba5acdf
SH		 236 if ((realms^filter.realm)&filter.realmmask)
237 return 0;
238 }
239 if (filter.iifmask) {
240 int iif = 0;
241 if (tb[RTA_IIF])
242 iif = *(int*)RTA_DATA(tb[RTA_IIF]);
243 if ((iif^filter.iif)&filter.iifmask)
244 return 0;
245 }
246 if (filter.oifmask) {
247 int oif = 0;
248 if (tb[RTA_OIF])
249 oif = *(int*)RTA_DATA(tb[RTA_OIF]);
250 if ((oif^filter.oif)&filter.oifmask)
251 return 0;
252 }
b0373bfb
ED		 253 if (filter.markmask) {
254 int mark = 0;
255 if (tb[RTA_MARK])
256 mark = *(int *)RTA_DATA(tb[RTA_MARK]);
257 if ((mark ^ filter.mark) & filter.markmask)
258 return 0;
259 }
ae665a52 260 if (filter.flushb &&
aba5acdf
SH		 261 r->rtm_family == AF_INET6 &&
262 r->rtm_dst_len == 0 &&
263 r->rtm_type == RTN_UNREACHABLE &&
264 tb[RTA_PRIORITY] &&
265 *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
266 return 0;
267
f4ff11e3
DS		 268 return 1;
269}
270
29d1f730
FW		 271static void print_rtax_features(FILE *fp, unsigned int features)
272{
273 unsigned int of = features;
274
275 if (features & RTAX_FEATURE_ECN) {
276 fprintf(fp, " ecn");
277 features &= ~RTAX_FEATURE_ECN;
278 }
279
280 if (features)
281 fprintf(fp, " 0x%x", of);
282}
283
f4ff11e3
DS		 284int print_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
285{
286 FILE *fp = (FILE*)arg;
287 struct rtmsg *r = NLMSG_DATA(n);
288 int len = n->nlmsg_len;
289 struct rtattr * tb[RTA_MAX+1];
290 char abuf[256];
f3a2ddc1 291 int host_len;
f4ff11e3
DS		 292 __u32 table;
293 SPRINT_BUF(b1);
294 static int hz;
295
296 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
297 fprintf(stderr, "Not a route: %08x %08x %08x\n",
298 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
299 return 0;
300 }
301 if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
302 return 0;
303 len -= NLMSG_LENGTH(sizeof(*r));
304 if (len < 0) {
305 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
306 return -1;
307 }
308
f3a2ddc1 309 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 310
311 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
312 table = rtm_get_table(r, tb);
313
314 if (!filter_nlmsg(n, tb, host_len))
315 return 0;
316
aba5acdf
SH		 317 if (filter.flushb) {
318 struct nlmsghdr *fn;
319 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
320 if (flush_update())
321 return -1;
322 }
323 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
324 memcpy(fn, n, n->nlmsg_len);
325 fn->nlmsg_type = RTM_DELROUTE;
326 fn->nlmsg_flags = NLM_F_REQUEST;
351efcde 327 fn->nlmsg_seq = ++rth.seq;
aba5acdf
SH		 328 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
329 filter.flushed++;
330 if (show_stats < 2)
331 return 0;
332 }
333
334 if (n->nlmsg_type == RTM_DELROUTE)
335 fprintf(fp, "Deleted ");
577e5a53 336 if ((r->rtm_type != RTN_UNICAST || show_details > 0) && !filter.type)
aba5acdf
SH		 337 fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
338
339 if (tb[RTA_DST]) {
340 if (r->rtm_dst_len != host_len) {
341 fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family,
aba5acdf
SH		 342 RTA_DATA(tb[RTA_DST]),
343 abuf, sizeof(abuf)),
344 r->rtm_dst_len
345 );
346 } else {
347 fprintf(fp, "%s ", format_host(r->rtm_family,
348 RTA_PAYLOAD(tb[RTA_DST]),
349 RTA_DATA(tb[RTA_DST]),
350 abuf, sizeof(abuf))
351 );
352 }
353 } else if (r->rtm_dst_len) {
354 fprintf(fp, "0/%d ", r->rtm_dst_len);
355 } else {
356 fprintf(fp, "default ");
357 }
358 if (tb[RTA_SRC]) {
359 if (r->rtm_src_len != host_len) {
360 fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family,
aba5acdf
SH		 361 RTA_DATA(tb[RTA_SRC]),
362 abuf, sizeof(abuf)),
363 r->rtm_src_len
364 );
365 } else {
366 fprintf(fp, "from %s ", format_host(r->rtm_family,
367 RTA_PAYLOAD(tb[RTA_SRC]),
368 RTA_DATA(tb[RTA_SRC]),
369 abuf, sizeof(abuf))
370 );
371 }
372 } else if (r->rtm_src_len) {
373 fprintf(fp, "from 0/%u ", r->rtm_src_len);
374 }
375 if (r->rtm_tos && filter.tosmask != -1) {
376 SPRINT_BUF(b1);
377 fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
378 }
02d2ae55 379
aba5acdf 380 if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
ae665a52 381 fprintf(fp, "via %s ",
aba5acdf
SH		 382 format_host(r->rtm_family,
383 RTA_PAYLOAD(tb[RTA_GATEWAY]),
384 RTA_DATA(tb[RTA_GATEWAY]),
385 abuf, sizeof(abuf)));
386 }
387 if (tb[RTA_OIF] && filter.oifmask != -1)
388 fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
389
390 if (!(r->rtm_flags&RTM_F_CLONED)) {
577e5a53 391 if ((table != RT_TABLE_MAIN || show_details > 0) && !filter.tb)
34e95647 392 fprintf(fp, " table %s ", rtnl_rttable_n2a(table, b1, sizeof(b1)));
577e5a53 393 if ((r->rtm_protocol != RTPROT_BOOT || show_details > 0) && filter.protocolmask != -1)
aba5acdf 394 fprintf(fp, " proto %s ", rtnl_rtprot_n2a(r->rtm_protocol, b1, sizeof(b1)));
577e5a53 395 if ((r->rtm_scope != RT_SCOPE_UNIVERSE || show_details > 0) && filter.scopemask != -1)
aba5acdf
SH		 396 fprintf(fp, " scope %s ", rtnl_rtscope_n2a(r->rtm_scope, b1, sizeof(b1)));
397 }
398 if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
399 /* Do not use format_host(). It is our local addr
400 and symbolic name will not be useful.
401 */
ae665a52 402 fprintf(fp, " src %s ",
aba5acdf 403 rt_addr_n2a(r->rtm_family,
aba5acdf
SH		 404 RTA_DATA(tb[RTA_PREFSRC]),
405 abuf, sizeof(abuf)));
406 }
407 if (tb[RTA_PRIORITY])
ff24746c 408 fprintf(fp, " metric %u ", rta_getattr_u32(tb[RTA_PRIORITY]));
aba5acdf
SH		 409 if (r->rtm_flags & RTNH_F_DEAD)
410 fprintf(fp, "dead ");
411 if (r->rtm_flags & RTNH_F_ONLINK)
412 fprintf(fp, "onlink ");
413 if (r->rtm_flags & RTNH_F_PERVASIVE)
414 fprintf(fp, "pervasive ");
aba5acdf
SH		 415 if (r->rtm_flags & RTM_F_NOTIFY)
416 fprintf(fp, "notify ");
b0373bfb
ED		 417 if (tb[RTA_MARK]) {
418 unsigned int mark = *(unsigned int*)RTA_DATA(tb[RTA_MARK]);
419 if (mark) {
420 if (mark >= 16)
421 fprintf(fp, " mark 0x%x", mark);
422 else
423 fprintf(fp, " mark %u", mark);
424 }
425 }
aba5acdf
SH		 426
427 if (tb[RTA_FLOW] && filter.realmmask != ~0U) {
ff24746c 428 __u32 to = rta_getattr_u32(tb[RTA_FLOW]);
aba5acdf
SH		 429 __u32 from = to>>16;
430 to &= 0xFFFF;
431 fprintf(fp, "realm%s ", from ? "s" : "");
432 if (from) {
433 fprintf(fp, "%s/",
434 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
435 }
436 fprintf(fp, "%s ",
437 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
438 }
439 if ((r->rtm_flags&RTM_F_CLONED) && r->rtm_family == AF_INET) {
440 __u32 flags = r->rtm_flags&~0xFFFF;
441 int first = 1;
442
443 fprintf(fp, "%s cache ", _SL_);
444
445#define PRTFL(fl,flname) if (flags&RTCF_##fl) { \
446 flags &= ~RTCF_##fl; \
447 fprintf(fp, "%s" flname "%s", first ? "<" : "", flags ? "," : "> "); \
448 first = 0; }
449 PRTFL(LOCAL, "local");
450 PRTFL(REJECT, "reject");
451 PRTFL(MULTICAST, "mc");
452 PRTFL(BROADCAST, "brd");
453 PRTFL(DNAT, "dst-nat");
454 PRTFL(SNAT, "src-nat");
455 PRTFL(MASQ, "masq");
456 PRTFL(DIRECTDST, "dst-direct");
457 PRTFL(DIRECTSRC, "src-direct");
458 PRTFL(REDIRECTED, "redirected");
459 PRTFL(DOREDIRECT, "redirect");
460 PRTFL(FAST, "fastroute");
461 PRTFL(NOTIFY, "notify");
462 PRTFL(TPROXY, "proxy");
63a0f20a 463
aba5acdf
SH		 464 if (flags)
465 fprintf(fp, "%s%x> ", first ? "<" : "", flags);
466 if (tb[RTA_CACHEINFO]) {
467 struct rta_cacheinfo *ci = RTA_DATA(tb[RTA_CACHEINFO]);
aba5acdf 468 if (!hz)
5e8bc631 469 hz = get_user_hz();
aba5acdf
SH		 470 if (ci->rta_expires != 0)
471 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
472 if (ci->rta_error != 0)
473 fprintf(fp, " error %d", ci->rta_error);
474 if (show_stats) {
475 if (ci->rta_clntref)
476 fprintf(fp, " users %d", ci->rta_clntref);
477 if (ci->rta_used != 0)
478 fprintf(fp, " used %d", ci->rta_used);
479 if (ci->rta_lastuse != 0)
480 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
481 }
aba5acdf
SH		 482 if (ci->rta_id)
483 fprintf(fp, " ipid 0x%04x", ci->rta_id);
484 if (ci->rta_ts || ci->rta_tsage)
d5b7420a
SH		 485 fprintf(fp, " ts 0x%x tsage %dsec",
486 ci->rta_ts, ci->rta_tsage);
aba5acdf
SH		 487 }
488 } else if (r->rtm_family == AF_INET6) {
489 struct rta_cacheinfo *ci = NULL;
490 if (tb[RTA_CACHEINFO])
491 ci = RTA_DATA(tb[RTA_CACHEINFO]);
492 if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
aba5acdf 493 if (!hz)
5e8bc631 494 hz = get_user_hz();
aba5acdf
SH		 495 if (r->rtm_flags & RTM_F_CLONED)
496 fprintf(fp, "%s cache ", _SL_);
497 if (ci->rta_expires)
498 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
499 if (ci->rta_error != 0)
500 fprintf(fp, " error %d", ci->rta_error);
501 if (show_stats) {
502 if (ci->rta_clntref)
503 fprintf(fp, " users %d", ci->rta_clntref);
504 if (ci->rta_used != 0)
505 fprintf(fp, " used %d", ci->rta_used);
506 if (ci->rta_lastuse != 0)
507 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
508 }
509 } else if (ci) {
510 if (ci->rta_error != 0)
511 fprintf(fp, " error %d", ci->rta_error);
512 }
513 }
514 if (tb[RTA_METRICS]) {
515 int i;
516 unsigned mxlock = 0;
517 struct rtattr *mxrta[RTAX_MAX+1];
518
aba5acdf
SH		 519 parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(tb[RTA_METRICS]),
520 RTA_PAYLOAD(tb[RTA_METRICS]));
521 if (mxrta[RTAX_LOCK])
522 mxlock = *(unsigned*)RTA_DATA(mxrta[RTAX_LOCK]);
523
f38c7334 524 for (i=2; i<= RTAX_MAX; i++) {
6ef87f9c 525 __u32 val;
ced61d7d 526
aba5acdf
SH		 527 if (mxrta[i] == NULL)
528 continue;
6a79240b
SH		 529
530 if (i < sizeof(mx_names)/sizeof(char*) && mx_names[i])
531 fprintf(fp, " %s", mx_names[i]);
aba5acdf 532 else
5e8bc631 533 fprintf(fp, " metric %d", i);
6ef87f9c 534
aba5acdf
SH		 535 if (mxlock & (1<<i))
536 fprintf(fp, " lock");
6ef87f9c
DB		 537 if (i != RTAX_CC_ALGO)
538 val = rta_getattr_u32(mxrta[i]);
aba5acdf 539
ced61d7d 540 switch (i) {
29d1f730
FW		 541 case RTAX_FEATURES:
542 print_rtax_features(fp, val);
543 break;
ced61d7d 544 case RTAX_HOPLIMIT:
62011a0b 545 if ((int)val == -1)
ced61d7d
SH		 546 val = 0;
547 /* fall through */
548 default:
549 fprintf(fp, " %u", val);
550 break;
aba5acdf 551
ced61d7d
SH		 552 case RTAX_RTT:
553 case RTAX_RTTVAR:
554 case RTAX_RTO_MIN:
aba5acdf
SH		 555 if (i == RTAX_RTT)
556 val /= 8;
54e0b2e7 557 else if (i == RTAX_RTTVAR)
aba5acdf 558 val /= 4;
ced61d7d 559
9b2cdc00
GR		 560 if (val >= 1000)
561 fprintf(fp, " %gs", val/1e3);
aba5acdf 562 else
9b2cdc00 563 fprintf(fp, " %ums", val);
6ef87f9c
DB		 564 break;
565 case RTAX_CC_ALGO:
566 fprintf(fp, " %s", rta_getattr_str(mxrta[i]));
567 break;
aba5acdf
SH		 568 }
569 }
570 }
571 if (tb[RTA_IIF] && filter.iifmask != -1) {
572 fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
573 }
574 if (tb[RTA_MULTIPATH]) {
575 struct rtnexthop *nh = RTA_DATA(tb[RTA_MULTIPATH]);
576 int first = 0;
577
578 len = RTA_PAYLOAD(tb[RTA_MULTIPATH]);
579
580 for (;;) {
581 if (len < sizeof(*nh))
582 break;
583 if (nh->rtnh_len > len)
584 break;
585 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
586 if (first)
587 fprintf(fp, " Oifs:");
588 else
589 fprintf(fp, " ");
590 } else
591 fprintf(fp, "%s\tnexthop", _SL_);
592 if (nh->rtnh_len > sizeof(*nh)) {
aba5acdf
SH		 593 parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh), nh->rtnh_len - sizeof(*nh));
594 if (tb[RTA_GATEWAY]) {
ae665a52 595 fprintf(fp, " via %s ",
aba5acdf
SH		 596 format_host(r->rtm_family,
597 RTA_PAYLOAD(tb[RTA_GATEWAY]),
598 RTA_DATA(tb[RTA_GATEWAY]),
599 abuf, sizeof(abuf)));
600 }
f4f6d640 601 if (tb[RTA_FLOW]) {
ff24746c 602 __u32 to = rta_getattr_u32(tb[RTA_FLOW]);
f4f6d640
PM		 603 __u32 from = to>>16;
604 to &= 0xFFFF;
605 fprintf(fp, " realm%s ", from ? "s" : "");
606 if (from) {
607 fprintf(fp, "%s/",
608 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
609 }
610 fprintf(fp, "%s",
611 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
612 }
aba5acdf
SH		 613 }
614 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
615 fprintf(fp, " %s", ll_index_to_name(nh->rtnh_ifindex));
616 if (nh->rtnh_hops != 1)
617 fprintf(fp, "(ttl>%d)", nh->rtnh_hops);
618 } else {
619 fprintf(fp, " dev %s", ll_index_to_name(nh->rtnh_ifindex));
620 fprintf(fp, " weight %d", nh->rtnh_hops+1);
621 }
622 if (nh->rtnh_flags & RTNH_F_DEAD)
623 fprintf(fp, " dead");
624 if (nh->rtnh_flags & RTNH_F_ONLINK)
625 fprintf(fp, " onlink");
626 if (nh->rtnh_flags & RTNH_F_PERVASIVE)
627 fprintf(fp, " pervasive");
628 len -= NLMSG_ALIGN(nh->rtnh_len);
629 nh = RTNH_NEXT(nh);
630 }
631 }
632 fprintf(fp, "\n");
633 fflush(fp);
634 return 0;
635}
636
637
d1f28cf1
SH		 638static int parse_one_nh(struct rtmsg *r, struct rtattr *rta,
639 struct rtnexthop *rtnh,
640 int *argcp, char ***argvp)
aba5acdf
SH		 641{
642 int argc = *argcp;
643 char **argv = *argvp;
644
645 while (++argv, --argc > 0) {
646 if (strcmp(*argv, "via") == 0) {
4d6c3796 647 inet_prefix addr;
aba5acdf 648 NEXT_ARG();
4d6c3796
VB		 649 get_addr(&addr, *argv, r->rtm_family);
650 if (r->rtm_family == AF_UNSPEC)
651 r->rtm_family = addr.family;
652 rta_addattr_l(rta, 4096, RTA_GATEWAY, &addr.data, addr.bytelen);
653 rtnh->rtnh_len += sizeof(struct rtattr) + addr.bytelen;
aba5acdf
SH		 654 } else if (strcmp(*argv, "dev") == 0) {
655 NEXT_ARG();
656 if ((rtnh->rtnh_ifindex = ll_name_to_index(*argv)) == 0) {
657 fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
658 exit(1);
659 }
660 } else if (strcmp(*argv, "weight") == 0) {
661 unsigned w;
662 NEXT_ARG();
663 if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
664 invarg("\"weight\" is invalid\n", *argv);
665 rtnh->rtnh_hops = w - 1;
666 } else if (strcmp(*argv, "onlink") == 0) {
667 rtnh->rtnh_flags |= RTNH_F_ONLINK;
f4f6d640
PM		 668 } else if (matches(*argv, "realms") == 0) {
669 __u32 realm;
670 NEXT_ARG();
671 if (get_rt_realms(&realm, *argv))
672 invarg("\"realm\" value is invalid\n", *argv);
673 rta_addattr32(rta, 4096, RTA_FLOW, realm);
674 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
aba5acdf
SH		 675 } else
676 break;
677 }
678 *argcp = argc;
679 *argvp = argv;
680 return 0;
681}
682
d1f28cf1
SH		 683static int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r,
684 int argc, char **argv)
aba5acdf
SH		 685{
686 char buf[1024];
687 struct rtattr *rta = (void*)buf;
688 struct rtnexthop *rtnh;
689
690 rta->rta_type = RTA_MULTIPATH;
691 rta->rta_len = RTA_LENGTH(0);
692 rtnh = RTA_DATA(rta);
693
694 while (argc > 0) {
695 if (strcmp(*argv, "nexthop") != 0) {
696 fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
697 exit(-1);
698 }
699 if (argc <= 1) {
700 fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
701 exit(-1);
702 }
703 memset(rtnh, 0, sizeof(*rtnh));
704 rtnh->rtnh_len = sizeof(*rtnh);
705 rta->rta_len += rtnh->rtnh_len;
4d6c3796 706 parse_one_nh(r, rta, rtnh, &argc, &argv);
aba5acdf
SH		 707 rtnh = RTNH_NEXT(rtnh);
708 }
709
710 if (rta->rta_len > RTA_LENGTH(0))
711 addattr_l(n, 1024, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta));
712 return 0;
713}
714
d1f28cf1 715static int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
aba5acdf 716{
aba5acdf 717 struct {
4806867a
SH		 718 struct nlmsghdr n;
719 struct rtmsg r;
720 char buf[1024];
aba5acdf
SH		 721 } req;
722 char mxbuf[256];
723 struct rtattr * mxrta = (void*)mxbuf;
724 unsigned mxlock = 0;
725 char *d = NULL;
726 int gw_ok = 0;
727 int dst_ok = 0;
728 int nhs_ok = 0;
729 int scope_ok = 0;
730 int table_ok = 0;
54e0b2e7 731 int raw = 0;
aba5acdf
SH		 732
733 memset(&req, 0, sizeof(req));
734
735 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
736 req.n.nlmsg_flags = NLM_F_REQUEST|flags;
737 req.n.nlmsg_type = cmd;
738 req.r.rtm_family = preferred_family;
739 req.r.rtm_table = RT_TABLE_MAIN;
740 req.r.rtm_scope = RT_SCOPE_NOWHERE;
741
742 if (cmd != RTM_DELROUTE) {
743 req.r.rtm_protocol = RTPROT_BOOT;
744 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
745 req.r.rtm_type = RTN_UNICAST;
746 }
747
748 mxrta->rta_type = RTA_METRICS;
749 mxrta->rta_len = RTA_LENGTH(0);
750
751 while (argc > 0) {
752 if (strcmp(*argv, "src") == 0) {
753 inet_prefix addr;
754 NEXT_ARG();
755 get_addr(&addr, *argv, req.r.rtm_family);
756 if (req.r.rtm_family == AF_UNSPEC)
757 req.r.rtm_family = addr.family;
758 addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
759 } else if (strcmp(*argv, "via") == 0) {
760 inet_prefix addr;
761 gw_ok = 1;
762 NEXT_ARG();
763 get_addr(&addr, *argv, req.r.rtm_family);
764 if (req.r.rtm_family == AF_UNSPEC)
765 req.r.rtm_family = addr.family;
766 addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
767 } else if (strcmp(*argv, "from") == 0) {
768 inet_prefix addr;
769 NEXT_ARG();
770 get_prefix(&addr, *argv, req.r.rtm_family);
771 if (req.r.rtm_family == AF_UNSPEC)
772 req.r.rtm_family = addr.family;
773 if (addr.bytelen)
774 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
775 req.r.rtm_src_len = addr.bitlen;
776 } else if (strcmp(*argv, "tos") == 0 ||
777 matches(*argv, "dsfield") == 0) {
778 __u32 tos;
779 NEXT_ARG();
780 if (rtnl_dsfield_a2n(&tos, *argv))
781 invarg("\"tos\" value is invalid\n", *argv);
782 req.r.rtm_tos = tos;
783 } else if (matches(*argv, "metric") == 0 ||
784 matches(*argv, "priority") == 0 ||
785 matches(*argv, "preference") == 0) {
786 __u32 metric;
787 NEXT_ARG();
788 if (get_u32(&metric, *argv, 0))
789 invarg("\"metric\" value is invalid\n", *argv);
790 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
791 } else if (strcmp(*argv, "scope") == 0) {
f332d169 792 __u32 scope = 0;
aba5acdf
SH		 793 NEXT_ARG();
794 if (rtnl_rtscope_a2n(&scope, *argv))
795 invarg("invalid \"scope\" value\n", *argv);
796 req.r.rtm_scope = scope;
797 scope_ok = 1;
798 } else if (strcmp(*argv, "mtu") == 0) {
799 unsigned mtu;
800 NEXT_ARG();
801 if (strcmp(*argv, "lock") == 0) {
802 mxlock |= (1<<RTAX_MTU);
803 NEXT_ARG();
804 }
805 if (get_unsigned(&mtu, *argv, 0))
806 invarg("\"mtu\" value is invalid\n", *argv);
807 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
71e58151
GBY		 808 } else if (strcmp(*argv, "hoplimit") == 0) {
809 unsigned hoplimit;
810 NEXT_ARG();
811 if (strcmp(*argv, "lock") == 0) {
812 mxlock |= (1<<RTAX_HOPLIMIT);
813 NEXT_ARG();
814 }
815 if (get_unsigned(&hoplimit, *argv, 0))
816 invarg("\"hoplimit\" value is invalid\n", *argv);
817 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit);
aba5acdf
SH		 818 } else if (strcmp(*argv, "advmss") == 0) {
819 unsigned mss;
820 NEXT_ARG();
821 if (strcmp(*argv, "lock") == 0) {
822 mxlock |= (1<<RTAX_ADVMSS);
823 NEXT_ARG();
824 }
825 if (get_unsigned(&mss, *argv, 0))
826 invarg("\"mss\" value is invalid\n", *argv);
827 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
aba5acdf
SH		 828 } else if (matches(*argv, "reordering") == 0) {
829 unsigned reord;
830 NEXT_ARG();
831 if (strcmp(*argv, "lock") == 0) {
832 mxlock |= (1<<RTAX_REORDERING);
833 NEXT_ARG();
834 }
835 if (get_unsigned(&reord, *argv, 0))
836 invarg("\"reordering\" value is invalid\n", *argv);
837 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
aba5acdf
SH		 838 } else if (strcmp(*argv, "rtt") == 0) {
839 unsigned rtt;
840 NEXT_ARG();
841 if (strcmp(*argv, "lock") == 0) {
842 mxlock |= (1<<RTAX_RTT);
843 NEXT_ARG();
844 }
81d03dc3 845 if (get_time_rtt(&rtt, *argv, &raw))
aba5acdf 846 invarg("\"rtt\" value is invalid\n", *argv);
0612519e 847 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT,
54e0b2e7
RJ		 848 (raw) ? rtt : rtt * 8);
849 } else if (strcmp(*argv, "rto_min") == 0) {
850 unsigned rto_min;
851 NEXT_ARG();
852 mxlock |= (1<<RTAX_RTO_MIN);
81d03dc3 853 if (get_time_rtt(&rto_min, *argv, &raw))
54e0b2e7
RJ		 854 invarg("\"rto_min\" value is invalid\n",
855 *argv);
856 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN,
857 rto_min);
aba5acdf
SH		 858 } else if (matches(*argv, "window") == 0) {
859 unsigned win;
860 NEXT_ARG();
861 if (strcmp(*argv, "lock") == 0) {
862 mxlock |= (1<<RTAX_WINDOW);
863 NEXT_ARG();
864 }
865 if (get_unsigned(&win, *argv, 0))
866 invarg("\"window\" value is invalid\n", *argv);
867 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
868 } else if (matches(*argv, "cwnd") == 0) {
869 unsigned win;
870 NEXT_ARG();
871 if (strcmp(*argv, "lock") == 0) {
872 mxlock |= (1<<RTAX_CWND);
873 NEXT_ARG();
874 }
875 if (get_unsigned(&win, *argv, 0))
876 invarg("\"cwnd\" value is invalid\n", *argv);
877 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
a1f1143e
VW		 878 } else if (matches(*argv, "initcwnd") == 0) {
879 unsigned win;
880 NEXT_ARG();
881 if (strcmp(*argv, "lock") == 0) {
882 mxlock |= (1<<RTAX_INITCWND);
883 NEXT_ARG();
884 }
885 if (get_unsigned(&win, *argv, 0))
886 invarg("\"initcwnd\" value is invalid\n", *argv);
887 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITCWND, win);
f5fd8003 888 } else if (matches(*argv, "initrwnd") == 0) {
889 unsigned win;
890 NEXT_ARG();
891 if (strcmp(*argv, "lock") == 0) {
892 mxlock |= (1<<RTAX_INITRWND);
893 NEXT_ARG();
894 }
895 if (get_unsigned(&win, *argv, 0))
896 invarg("\"initrwnd\" value is invalid\n", *argv);
897 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITRWND, win);
29d1f730
FW		 898 } else if (matches(*argv, "features") == 0) {
899 unsigned int features = 0;
900
901 while (argc > 0) {
902 NEXT_ARG();
903
904 if (strcmp(*argv, "ecn") == 0)
905 features |= RTAX_FEATURE_ECN;
906 else
907 invarg("\"features\" value not valid\n", *argv);
908 break;
909 }
910
911 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_FEATURES, features);
b37f2c89
CW		 912 } else if (matches(*argv, "quickack") == 0) {
913 unsigned quickack;
914 NEXT_ARG();
915 if (get_unsigned(&quickack, *argv, 0))
916 invarg("\"quickack\" value is invalid\n", *argv);
917 if (quickack != 1 && quickack != 0)
918 invarg("\"quickack\" value should be 0 or 1\n", *argv);
919 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_QUICKACK, quickack);
6ef87f9c
DB		 920 } else if (matches(*argv, "congctl") == 0) {
921 NEXT_ARG();
922 if (strcmp(*argv, "lock") == 0) {
923 mxlock |= 1 << RTAX_CC_ALGO;
924 NEXT_ARG();
925 }
926 rta_addattr_l(mxrta, sizeof(mxbuf), RTAX_CC_ALGO, *argv,
927 strlen(*argv));
aba5acdf
SH		 928 } else if (matches(*argv, "rttvar") == 0) {
929 unsigned win;
930 NEXT_ARG();
931 if (strcmp(*argv, "lock") == 0) {
932 mxlock |= (1<<RTAX_RTTVAR);
933 NEXT_ARG();
934 }
81d03dc3 935 if (get_time_rtt(&win, *argv, &raw))
aba5acdf 936 invarg("\"rttvar\" value is invalid\n", *argv);
54e0b2e7
RJ		 937 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR,
938 (raw) ? win : win * 4);
aba5acdf
SH		 939 } else if (matches(*argv, "ssthresh") == 0) {
940 unsigned win;
941 NEXT_ARG();
942 if (strcmp(*argv, "lock") == 0) {
943 mxlock |= (1<<RTAX_SSTHRESH);
944 NEXT_ARG();
945 }
946 if (get_unsigned(&win, *argv, 0))
947 invarg("\"ssthresh\" value is invalid\n", *argv);
948 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
949 } else if (matches(*argv, "realms") == 0) {
950 __u32 realm;
951 NEXT_ARG();
952 if (get_rt_realms(&realm, *argv))
953 invarg("\"realm\" value is invalid\n", *argv);
954 addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
955 } else if (strcmp(*argv, "onlink") == 0) {
956 req.r.rtm_flags |= RTNH_F_ONLINK;
aba5acdf
SH		 957 } else if (strcmp(*argv, "nexthop") == 0) {
958 nhs_ok = 1;
959 break;
960 } else if (matches(*argv, "protocol") == 0) {
f332d169 961 __u32 prot;
aba5acdf
SH		 962 NEXT_ARG();
963 if (rtnl_rtprot_a2n(&prot, *argv))
964 invarg("\"protocol\" value is invalid\n", *argv);
965 req.r.rtm_protocol = prot;
aba5acdf 966 } else if (matches(*argv, "table") == 0) {
f332d169 967 __u32 tid;
aba5acdf
SH		 968 NEXT_ARG();
969 if (rtnl_rttable_a2n(&tid, *argv))
970 invarg("\"table\" value is invalid\n", *argv);
34e95647
PM		 971 if (tid < 256)
972 req.r.rtm_table = tid;
973 else {
974 req.r.rtm_table = RT_TABLE_UNSPEC;
975 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
976 }
aba5acdf
SH		 977 table_ok = 1;
978 } else if (strcmp(*argv, "dev") == 0 ||
979 strcmp(*argv, "oif") == 0) {
980 NEXT_ARG();
981 d = *argv;
982 } else {
983 int type;
984 inet_prefix dst;
985
986 if (strcmp(*argv, "to") == 0) {
987 NEXT_ARG();
988 }
989 if ((**argv < '0' || **argv > '9') &&
990 rtnl_rtntype_a2n(&type, *argv) == 0) {
991 NEXT_ARG();
992 req.r.rtm_type = type;
aba5acdf
SH		 993 }
994
995 if (matches(*argv, "help") == 0)
996 usage();
997 if (dst_ok)
998 duparg2("to", *argv);
999 get_prefix(&dst, *argv, req.r.rtm_family);
1000 if (req.r.rtm_family == AF_UNSPEC)
1001 req.r.rtm_family = dst.family;
1002 req.r.rtm_dst_len = dst.bitlen;
1003 dst_ok = 1;
1004 if (dst.bytelen)
1005 addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
1006 }
1007 argc--; argv++;
1008 }
1009
922b4822
PS		 1010 if (!dst_ok)
1011 usage();
1012
aba5acdf
SH		 1013 if (d || nhs_ok) {
1014 int idx;
1015
aba5acdf
SH		 1016 if (d) {
1017 if ((idx = ll_name_to_index(d)) == 0) {
1018 fprintf(stderr, "Cannot find device \"%s\"\n", d);
1019 return -1;
1020 }
1021 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
1022 }
1023 }
1024
1025 if (mxrta->rta_len > RTA_LENGTH(0)) {
1026 if (mxlock)
1027 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
1028 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
1029 }
1030
1031 if (nhs_ok)
1032 parse_nexthops(&req.n, &req.r, argc, argv);
1033
1034 if (!table_ok) {
1035 if (req.r.rtm_type == RTN_LOCAL ||
1036 req.r.rtm_type == RTN_BROADCAST ||
1037 req.r.rtm_type == RTN_NAT ||
1038 req.r.rtm_type == RTN_ANYCAST)
1039 req.r.rtm_table = RT_TABLE_LOCAL;
1040 }
1041 if (!scope_ok) {
1042 if (req.r.rtm_type == RTN_LOCAL ||
1043 req.r.rtm_type == RTN_NAT)
1044 req.r.rtm_scope = RT_SCOPE_HOST;
1045 else if (req.r.rtm_type == RTN_BROADCAST ||
1046 req.r.rtm_type == RTN_MULTICAST ||
1047 req.r.rtm_type == RTN_ANYCAST)
1048 req.r.rtm_scope = RT_SCOPE_LINK;
1049 else if (req.r.rtm_type == RTN_UNICAST ||
1050 req.r.rtm_type == RTN_UNSPEC) {
1051 if (cmd == RTM_DELROUTE)
1052 req.r.rtm_scope = RT_SCOPE_NOWHERE;
1053 else if (!gw_ok && !nhs_ok)
1054 req.r.rtm_scope = RT_SCOPE_LINK;
1055 }
1056 }
1057
1058 if (req.r.rtm_family == AF_UNSPEC)
1059 req.r.rtm_family = AF_INET;
1060
cd70f3f5 1061 if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
42ecedd4 1062 return -1;
aba5acdf
SH		 1063
1064 return 0;
1065}
1066
1067static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
1068{
1069 struct {
1070 struct nlmsghdr nlh;
1071 struct rtmsg rtm;
1072 } req;
1073 struct sockaddr_nl nladdr;
1074
1075 memset(&nladdr, 0, sizeof(nladdr));
1076 memset(&req, 0, sizeof(req));
1077 nladdr.nl_family = AF_NETLINK;
1078
1079 req.nlh.nlmsg_len = sizeof(req);
1080 req.nlh.nlmsg_type = RTM_GETROUTE;
1081 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST;
1082 req.nlh.nlmsg_pid = 0;
1083 req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
1084 req.rtm.rtm_family = family;
1085 req.rtm.rtm_flags |= RTM_F_CLONED;
1086
1087 return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
1088}
1089
1090static int iproute_flush_cache(void)
1091{
1092#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1093
1094 int len;
1095 int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY);
1096 char *buffer = "-1";
1097
1098 if (flush_fd < 0) {
1099 fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH);
1100 return -1;
1101 }
1102
1103 len = strlen (buffer);
ae665a52 1104
aba5acdf
SH		 1105 if ((write (flush_fd, (void *)buffer, len)) < len) {
1106 fprintf (stderr, "Cannot flush routing cache\n");
25352af7 1107 close(flush_fd);
aba5acdf
SH		 1108 return -1;
1109 }
1110 close(flush_fd);
1111 return 0;
1112}
1113
76c61b34
PE		 1114static __u32 route_dump_magic = 0x45311224;
1115
d1f28cf1
SH		 1116static int save_route(const struct sockaddr_nl *who, struct nlmsghdr *n,
1117 void *arg)
f4ff11e3
DS		 1118{
1119 int ret;
1120 int len = n->nlmsg_len;
1121 struct rtmsg *r = NLMSG_DATA(n);
1122 struct rtattr *tb[RTA_MAX+1];
f3a2ddc1 1123 int host_len;
f4ff11e3 1124
f3a2ddc1 1125 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 1126 len -= NLMSG_LENGTH(sizeof(*r));
1127 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1128
1129 if (!filter_nlmsg(n, tb, host_len))
1130 return 0;
1131
1132 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
1133 if ((ret > 0) && (ret != n->nlmsg_len)) {
1134 fprintf(stderr, "Short write while saving nlmsg\n");
1135 ret = -EIO;
1136 }
1137
1138 return ret == n->nlmsg_len ? 0 : ret;
1139}
aba5acdf 1140
76c61b34
PE		 1141static int save_route_prep(void)
1142{
1143 int ret;
1144
1145 if (isatty(STDOUT_FILENO)) {
14645ec2 1146 fprintf(stderr, "Not sending a binary stream to stdout\n");
76c61b34
PE		 1147 return -1;
1148 }
1149
1150 ret = write(STDOUT_FILENO, &route_dump_magic, sizeof(route_dump_magic));
1151 if (ret != sizeof(route_dump_magic)) {
1152 fprintf(stderr, "Can't write magic to dump file\n");
1153 return -1;
1154 }
1155
1156 return 0;
1157}
1158
f4ff11e3 1159static int iproute_list_flush_or_save(int argc, char **argv, int action)
aba5acdf
SH		 1160{
1161 int do_ipv6 = preferred_family;
aba5acdf
SH		 1162 char *id = NULL;
1163 char *od = NULL;
b0373bfb 1164 unsigned int mark = 0;
f4ff11e3
DS		 1165 rtnl_filter_t filter_fn;
1166
76c61b34
PE		 1167 if (action == IPROUTE_SAVE) {
1168 if (save_route_prep())
1169 return -1;
1170
f4ff11e3 1171 filter_fn = save_route;
76c61b34 1172 } else
f4ff11e3 1173 filter_fn = print_route;
aba5acdf 1174
093b7646 1175 iproute_reset_filter(0);
aba5acdf
SH		 1176 filter.tb = RT_TABLE_MAIN;
1177
f4ff11e3 1178 if ((action == IPROUTE_FLUSH) && argc <= 0) {
aba5acdf
SH		 1179 fprintf(stderr, "\"ip route flush\" requires arguments.\n");
1180 return -1;
1181 }
1182
1183 while (argc > 0) {
1184 if (matches(*argv, "table") == 0) {
f332d169 1185 __u32 tid;
aba5acdf
SH		 1186 NEXT_ARG();
1187 if (rtnl_rttable_a2n(&tid, *argv)) {
1188 if (strcmp(*argv, "all") == 0) {
bd4bcdad 1189 filter.tb = 0;
aba5acdf 1190 } else if (strcmp(*argv, "cache") == 0) {
bd4bcdad 1191 filter.cloned = 1;
aba5acdf
SH		 1192 } else if (strcmp(*argv, "help") == 0) {
1193 usage();
1194 } else {
1195 invarg("table id value is invalid\n", *argv);
1196 }
bd4bcdad
PM		 1197 } else
1198 filter.tb = tid;
aba5acdf
SH		 1199 } else if (matches(*argv, "cached") == 0 ||
1200 matches(*argv, "cloned") == 0) {
bd4bcdad 1201 filter.cloned = 1;
aba5acdf
SH		 1202 } else if (strcmp(*argv, "tos") == 0 ||
1203 matches(*argv, "dsfield") == 0) {
1204 __u32 tos;
1205 NEXT_ARG();
1206 if (rtnl_dsfield_a2n(&tos, *argv))
1207 invarg("TOS value is invalid\n", *argv);
1208 filter.tos = tos;
1209 filter.tosmask = -1;
1210 } else if (matches(*argv, "protocol") == 0) {
f332d169 1211 __u32 prot = 0;
aba5acdf
SH		 1212 NEXT_ARG();
1213 filter.protocolmask = -1;
1214 if (rtnl_rtprot_a2n(&prot, *argv)) {
1215 if (strcmp(*argv, "all") != 0)
1216 invarg("invalid \"protocol\"\n", *argv);
1217 prot = 0;
1218 filter.protocolmask = 0;
1219 }
1220 filter.protocol = prot;
1221 } else if (matches(*argv, "scope") == 0) {
f332d169 1222 __u32 scope = 0;
aba5acdf
SH		 1223 NEXT_ARG();
1224 filter.scopemask = -1;
1225 if (rtnl_rtscope_a2n(&scope, *argv)) {
1226 if (strcmp(*argv, "all") != 0)
1227 invarg("invalid \"scope\"\n", *argv);
1228 scope = RT_SCOPE_NOWHERE;
1229 filter.scopemask = 0;
1230 }
1231 filter.scope = scope;
1232 } else if (matches(*argv, "type") == 0) {
1233 int type;
1234 NEXT_ARG();
1235 filter.typemask = -1;
1236 if (rtnl_rtntype_a2n(&type, *argv))
1237 invarg("node type value is invalid\n", *argv);
1238 filter.type = type;
1239 } else if (strcmp(*argv, "dev") == 0 ||
1240 strcmp(*argv, "oif") == 0) {
1241 NEXT_ARG();
1242 od = *argv;
1243 } else if (strcmp(*argv, "iif") == 0) {
1244 NEXT_ARG();
1245 id = *argv;
b0373bfb
ED		 1246 } else if (strcmp(*argv, "mark") == 0) {
1247 NEXT_ARG();
1248 get_unsigned(&mark, *argv, 0);
1249 filter.markmask = -1;
aba5acdf
SH		 1250 } else if (strcmp(*argv, "via") == 0) {
1251 NEXT_ARG();
1252 get_prefix(&filter.rvia, *argv, do_ipv6);
1253 } else if (strcmp(*argv, "src") == 0) {
1254 NEXT_ARG();
1255 get_prefix(&filter.rprefsrc, *argv, do_ipv6);
1256 } else if (matches(*argv, "realms") == 0) {
1257 __u32 realm;
1258 NEXT_ARG();
1259 if (get_rt_realms(&realm, *argv))
1260 invarg("invalid realms\n", *argv);
1261 filter.realm = realm;
1262 filter.realmmask = ~0U;
1263 if ((filter.realm&0xFFFF) == 0 &&
1264 (*argv)[strlen(*argv) - 1] == '/')
1265 filter.realmmask &= ~0xFFFF;
1266 if ((filter.realm&0xFFFF0000U) == 0 &&
1267 (strchr(*argv, '/') == NULL ||
1268 (*argv)[0] == '/'))
1269 filter.realmmask &= ~0xFFFF0000U;
1270 } else if (matches(*argv, "from") == 0) {
1271 NEXT_ARG();
1272 if (matches(*argv, "root") == 0) {
1273 NEXT_ARG();
1274 get_prefix(&filter.rsrc, *argv, do_ipv6);
1275 } else if (matches(*argv, "match") == 0) {
1276 NEXT_ARG();
1277 get_prefix(&filter.msrc, *argv, do_ipv6);
1278 } else {
1279 if (matches(*argv, "exact") == 0) {
1280 NEXT_ARG();
1281 }
1282 get_prefix(&filter.msrc, *argv, do_ipv6);
1283 filter.rsrc = filter.msrc;
1284 }
1285 } else {
1286 if (matches(*argv, "to") == 0) {
1287 NEXT_ARG();
1288 }
1289 if (matches(*argv, "root") == 0) {
1290 NEXT_ARG();
1291 get_prefix(&filter.rdst, *argv, do_ipv6);
1292 } else if (matches(*argv, "match") == 0) {
1293 NEXT_ARG();
1294 get_prefix(&filter.mdst, *argv, do_ipv6);
1295 } else {
1296 if (matches(*argv, "exact") == 0) {
1297 NEXT_ARG();
1298 }
1299 get_prefix(&filter.mdst, *argv, do_ipv6);
1300 filter.rdst = filter.mdst;
1301 }
1302 }
1303 argc--; argv++;
1304 }
1305
1306 if (do_ipv6 == AF_UNSPEC && filter.tb)
1307 do_ipv6 = AF_INET;
1308
aba5acdf
SH		 1309 if (id || od) {
1310 int idx;
1311
1312 if (id) {
1313 if ((idx = ll_name_to_index(id)) == 0) {
1314 fprintf(stderr, "Cannot find device \"%s\"\n", id);
1315 return -1;
1316 }
1317 filter.iif = idx;
1318 filter.iifmask = -1;
1319 }
1320 if (od) {
1321 if ((idx = ll_name_to_index(od)) == 0) {
1322 fprintf(stderr, "Cannot find device \"%s\"\n", od);
1323 return -1;
1324 }
1325 filter.oif = idx;
1326 filter.oifmask = -1;
1327 }
1328 }
b0373bfb 1329 filter.mark = mark;
aba5acdf 1330
f4ff11e3 1331 if (action == IPROUTE_FLUSH) {
aba5acdf
SH		 1332 int round = 0;
1333 char flushb[4096-512];
33551240 1334 time_t start = time(0);
aba5acdf 1335
bd4bcdad 1336 if (filter.cloned) {
aba5acdf
SH		 1337 if (do_ipv6 != AF_INET6) {
1338 iproute_flush_cache();
1339 if (show_stats)
1340 printf("*** IPv4 routing cache is flushed.\n");
1341 }
1342 if (do_ipv6 == AF_INET)
1343 return 0;
1344 }
1345
1346 filter.flushb = flushb;
1347 filter.flushp = 0;
1348 filter.flushe = sizeof(flushb);
aba5acdf
SH		 1349
1350 for (;;) {
1351 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1352 perror("Cannot send dump request");
1353 exit(1);
1354 }
1355 filter.flushed = 0;
cd70f3f5 1356 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
aba5acdf
SH		 1357 fprintf(stderr, "Flush terminated\n");
1358 exit(1);
1359 }
1360 if (filter.flushed == 0) {
f0b34d2d
AH		 1361 if (show_stats) {
1362 if (round == 0 && (!filter.cloned || do_ipv6 == AF_INET6))
1363 printf("Nothing to flush.\n");
1364 else
1365 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
1366 }
aba5acdf
SH		 1367 fflush(stdout);
1368 return 0;
1369 }
1370 round++;
1371 if (flush_update() < 0)
1372 exit(1);
33551240
SH		 1373
1374 if (time(0) - start > 30) {
1375 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
5d8a7529 1376 (long)(time(0) - start), filter.flushed);
33551240
SH		 1377 exit(1);
1378 }
1379
aba5acdf
SH		 1380 if (show_stats) {
1381 printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed);
1382 fflush(stdout);
1383 }
1384 }
1385 }
1386
bd4bcdad 1387 if (!filter.cloned) {
aba5acdf
SH		 1388 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1389 perror("Cannot send dump request");
1390 exit(1);
1391 }
1392 } else {
1393 if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
1394 perror("Cannot send dump request");
1395 exit(1);
1396 }
1397 }
1398
cd70f3f5 1399 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
aba5acdf
SH		 1400 fprintf(stderr, "Dump terminated\n");
1401 exit(1);
1402 }
1403
1404 exit(0);
1405}
1406
1407
d1f28cf1 1408static int iproute_get(int argc, char **argv)
aba5acdf 1409{
aba5acdf 1410 struct {
4806867a
SH		 1411 struct nlmsghdr n;
1412 struct rtmsg r;
1413 char buf[1024];
aba5acdf
SH		 1414 } req;
1415 char *idev = NULL;
1416 char *odev = NULL;
1417 int connected = 0;
1418 int from_ok = 0;
b0373bfb 1419 unsigned int mark = 0;
aba5acdf
SH		 1420
1421 memset(&req, 0, sizeof(req));
1422
093b7646 1423 iproute_reset_filter(0);
c73f3e02 1424 filter.cloned = 2;
aba5acdf
SH		 1425
1426 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
1427 req.n.nlmsg_flags = NLM_F_REQUEST;
1428 req.n.nlmsg_type = RTM_GETROUTE;
1429 req.r.rtm_family = preferred_family;
1430 req.r.rtm_table = 0;
1431 req.r.rtm_protocol = 0;
1432 req.r.rtm_scope = 0;
1433 req.r.rtm_type = 0;
1434 req.r.rtm_src_len = 0;
1435 req.r.rtm_dst_len = 0;
1436 req.r.rtm_tos = 0;
ae665a52 1437
aba5acdf
SH		 1438 while (argc > 0) {
1439 if (strcmp(*argv, "tos") == 0 ||
1440 matches(*argv, "dsfield") == 0) {
1441 __u32 tos;
1442 NEXT_ARG();
1443 if (rtnl_dsfield_a2n(&tos, *argv))
1444 invarg("TOS value is invalid\n", *argv);
1445 req.r.rtm_tos = tos;
1446 } else if (matches(*argv, "from") == 0) {
1447 inet_prefix addr;
1448 NEXT_ARG();
1449 if (matches(*argv, "help") == 0)
1450 usage();
1451 from_ok = 1;
1452 get_prefix(&addr, *argv, req.r.rtm_family);
1453 if (req.r.rtm_family == AF_UNSPEC)
1454 req.r.rtm_family = addr.family;
1455 if (addr.bytelen)
1456 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
1457 req.r.rtm_src_len = addr.bitlen;
1458 } else if (matches(*argv, "iif") == 0) {
1459 NEXT_ARG();
1460 idev = *argv;
b0373bfb
ED		 1461 } else if (matches(*argv, "mark") == 0) {
1462 NEXT_ARG();
1463 get_unsigned(&mark, *argv, 0);
aba5acdf
SH		 1464 } else if (matches(*argv, "oif") == 0 ||
1465 strcmp(*argv, "dev") == 0) {
1466 NEXT_ARG();
1467 odev = *argv;
1468 } else if (matches(*argv, "notify") == 0) {
1469 req.r.rtm_flags |= RTM_F_NOTIFY;
1470 } else if (matches(*argv, "connected") == 0) {
1471 connected = 1;
1472 } else {
1473 inet_prefix addr;
1474 if (strcmp(*argv, "to") == 0) {
1475 NEXT_ARG();
1476 }
1477 if (matches(*argv, "help") == 0)
1478 usage();
1479 get_prefix(&addr, *argv, req.r.rtm_family);
1480 if (req.r.rtm_family == AF_UNSPEC)
1481 req.r.rtm_family = addr.family;
1482 if (addr.bytelen)
1483 addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
1484 req.r.rtm_dst_len = addr.bitlen;
1485 }
1486 argc--; argv++;
1487 }
1488
1489 if (req.r.rtm_dst_len == 0) {
14645ec2 1490 fprintf(stderr, "need at least a destination address\n");
aba5acdf
SH		 1491 exit(1);
1492 }
1493
aba5acdf
SH		 1494 if (idev || odev) {
1495 int idx;
1496
1497 if (idev) {
1498 if ((idx = ll_name_to_index(idev)) == 0) {
1499 fprintf(stderr, "Cannot find device \"%s\"\n", idev);
1500 return -1;
1501 }
1502 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
1503 }
1504 if (odev) {
1505 if ((idx = ll_name_to_index(odev)) == 0) {
1506 fprintf(stderr, "Cannot find device \"%s\"\n", odev);
1507 return -1;
1508 }
1509 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
1510 }
1511 }
b0373bfb
ED		 1512 if (mark)
1513 addattr32(&req.n, sizeof(req), RTA_MARK, mark);
aba5acdf
SH		 1514
1515 if (req.r.rtm_family == AF_UNSPEC)
1516 req.r.rtm_family = AF_INET;
1517
cd70f3f5 1518 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0)
aba5acdf
SH		 1519 exit(2);
1520
1521 if (connected && !from_ok) {
1522 struct rtmsg *r = NLMSG_DATA(&req.n);
1523 int len = req.n.nlmsg_len;
1524 struct rtattr * tb[RTA_MAX+1];
1525
1526 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1527 fprintf(stderr, "An error :-)\n");
1528 exit(1);
1529 }
1530
1531 if (req.n.nlmsg_type != RTM_NEWROUTE) {
1532 fprintf(stderr, "Not a route?\n");
1533 return -1;
1534 }
1535 len -= NLMSG_LENGTH(sizeof(*r));
1536 if (len < 0) {
1537 fprintf(stderr, "Wrong len %d\n", len);
1538 return -1;
1539 }
1540
aba5acdf
SH		 1541 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1542
1543 if (tb[RTA_PREFSRC]) {
1544 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
1545 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
1546 } else if (!tb[RTA_SRC]) {
1547 fprintf(stderr, "Failed to connect the route\n");
1548 return -1;
1549 }
1550 if (!odev && tb[RTA_OIF])
1551 tb[RTA_OIF]->rta_type = 0;
1552 if (tb[RTA_GATEWAY])
1553 tb[RTA_GATEWAY]->rta_type = 0;
1554 if (!idev && tb[RTA_IIF])
1555 tb[RTA_IIF]->rta_type = 0;
1556 req.n.nlmsg_flags = NLM_F_REQUEST;
1557 req.n.nlmsg_type = RTM_GETROUTE;
1558
cd70f3f5 1559 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0)
aba5acdf
SH		 1560 exit(2);
1561 }
1562
1563 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1564 fprintf(stderr, "An error :-)\n");
1565 exit(1);
1566 }
1567
1568 exit(0);
1569}
1570
d1f28cf1
SH		 1571static int restore_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n,
1572 void *arg)
f4ff11e3
DS		 1573{
1574 int ret;
1575
1576 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
1577
1578 ll_init_map(&rth);
1579
cd70f3f5 1580 ret = rtnl_talk(&rth, n, 0, 0, n);
f4ff11e3
DS		 1581 if ((ret < 0) && (errno == EEXIST))
1582 ret = 0;
1583
1584 return ret;
1585}
1586
76c61b34
PE		 1587static int route_dump_check_magic(void)
1588{
1589 int ret;
1590 __u32 magic = 0;
1591
1592 if (isatty(STDIN_FILENO)) {
1593 fprintf(stderr, "Can't restore route dump from a terminal\n");
1594 return -1;
1595 }
1596
1597 ret = fread(&magic, sizeof(magic), 1, stdin);
1598 if (magic != route_dump_magic) {
1599 fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic);
1600 return -1;
1601 }
1602
1603 return 0;
1604}
1605
d1f28cf1 1606static int iproute_restore(void)
f4ff11e3 1607{
76c61b34
PE		 1608 if (route_dump_check_magic())
1609 exit(-1);
1610
f4ff11e3
DS		 1611 exit(rtnl_from_file(stdin, &restore_handler, NULL));
1612}
1613
93b79863
PE		 1614static int show_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n, void *arg)
1615{
1616 print_route(nl, n, stdout);
1617 return 0;
1618}
1619
1620static int iproute_showdump(void)
1621{
1622 if (route_dump_check_magic())
1623 exit(-1);
1624
1625 exit(rtnl_from_file(stdin, &show_handler, NULL));
1626}
1627
093b7646 1628void iproute_reset_filter(int ifindex)
aba5acdf
SH		 1629{
1630 memset(&filter, 0, sizeof(filter));
1631 filter.mdst.bitlen = -1;
1632 filter.msrc.bitlen = -1;
093b7646 1633 filter.oif = ifindex;
1634 if (filter.oif > 0)
1635 filter.oifmask = -1;
aba5acdf
SH		 1636}
1637
1638int do_iproute(int argc, char **argv)
1639{
1640 if (argc < 1)
f4ff11e3 1641 return iproute_list_flush_or_save(0, NULL, IPROUTE_LIST);
ae665a52 1642
aba5acdf
SH		 1643 if (matches(*argv, "add") == 0)
1644 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
1645 argc-1, argv+1);
1646 if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
1647 return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
1648 argc-1, argv+1);
1649 if (matches(*argv, "replace") == 0)
1650 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
1651 argc-1, argv+1);
1652 if (matches(*argv, "prepend") == 0)
1653 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
1654 argc-1, argv+1);
1655 if (matches(*argv, "append") == 0)
1656 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
1657 argc-1, argv+1);
1658 if (matches(*argv, "test") == 0)
1659 return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
1660 argc-1, argv+1);
1661 if (matches(*argv, "delete") == 0)
1662 return iproute_modify(RTM_DELROUTE, 0,
1663 argc-1, argv+1);
1664 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1665 || matches(*argv, "lst") == 0)
f4ff11e3 1666 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_LIST);
aba5acdf
SH		 1667 if (matches(*argv, "get") == 0)
1668 return iproute_get(argc-1, argv+1);
1669 if (matches(*argv, "flush") == 0)
f4ff11e3
DS		 1670 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_FLUSH);
1671 if (matches(*argv, "save") == 0)
1672 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_SAVE);
1673 if (matches(*argv, "restore") == 0)
1674 return iproute_restore();
93b79863
PE		 1675 if (matches(*argv, "showdump") == 0)
1676 return iproute_showdump();
aba5acdf
SH		 1677 if (matches(*argv, "help") == 0)
1678 usage();
1679 fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
1680 exit(-1);
1681}
1682
Upstream mirror of iproute2