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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>
26
27#include "rt_names.h"
28#include "utils.h"
29#include "ip_common.h"
30
31#ifndef RTAX_RTTVAR
32#define RTAX_RTTVAR RTAX_HOPS
33#endif
34
35
f38c7334
SH		 36static const char *mx_names[RTAX_MAX+1] = {
37 [RTAX_MTU] = "mtu",
38 [RTAX_WINDOW] = "window",
39 [RTAX_RTT] = "rtt",
40 [RTAX_RTTVAR] = "rttvar",
41 [RTAX_SSTHRESH] = "ssthresh",
42 [RTAX_CWND] = "cwnd",
43 [RTAX_ADVMSS] = "advmss",
44 [RTAX_REORDERING]="reordering",
45 [RTAX_HOPLIMIT] = "hoplimit",
46 [RTAX_INITCWND] = "initcwnd",
47 [RTAX_FEATURES] = "features",
54e0b2e7 48 [RTAX_RTO_MIN] = "rto_min",
f38c7334 49};
aba5acdf
SH		 50static void usage(void) __attribute__((noreturn));
51
52static void usage(void)
53{
54 fprintf(stderr, "Usage: ip route { list | flush } SELECTOR\n");
55 fprintf(stderr, " ip route get ADDRESS [ from ADDRESS iif STRING ]\n");
56 fprintf(stderr, " [ oif STRING ] [ tos TOS ]\n");
57 fprintf(stderr, " ip route { add | del | change | append | replace | monitor } ROUTE\n");
58 fprintf(stderr, "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n");
59 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
60 fprintf(stderr, " [ type TYPE ] [ scope SCOPE ]\n");
61 fprintf(stderr, "ROUTE := NODE_SPEC [ INFO_SPEC ]\n");
62 fprintf(stderr, "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n");
63 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
64 fprintf(stderr, " [ scope SCOPE ] [ metric METRIC ]\n");
65 fprintf(stderr, "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n");
66 fprintf(stderr, "NH := [ via ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS\n");
67 fprintf(stderr, "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ]\n");
71e58151 68 fprintf(stderr, " [ rtt TIME ] [ rttvar TIME ] [reordering NUMBER ]\n");
a1f1143e 69 fprintf(stderr, " [ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n");
576c63ee 70 fprintf(stderr, " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n");
71e58151 71 fprintf(stderr, " [ rto_min TIME ] [ hoplimit NUMBER ] \n");
aba5acdf
SH		 72 fprintf(stderr, "TYPE := [ unicast | local | broadcast | multicast | throw |\n");
73 fprintf(stderr, " unreachable | prohibit | blackhole | nat ]\n");
74 fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n");
75 fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n");
02d2ae55 76 fprintf(stderr, "MP_ALGO := { rr | drr | random | wrandom }\n");
aba5acdf
SH		 77 fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n");
78 fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n");
54e0b2e7 79 fprintf(stderr, "TIME := NUMBER[s|ms|us|ns|j]\n");
aba5acdf
SH		 80 exit(-1);
81}
82
83
84static struct
85{
86 int tb;
bd4bcdad 87 int cloned;
aba5acdf
SH		 88 int flushed;
89 char *flushb;
90 int flushp;
91 int flushe;
aba5acdf
SH		 92 int protocol, protocolmask;
93 int scope, scopemask;
94 int type, typemask;
95 int tos, tosmask;
96 int iif, iifmask;
97 int oif, oifmask;
98 int realm, realmmask;
99 inet_prefix rprefsrc;
100 inet_prefix rvia;
101 inet_prefix rdst;
102 inet_prefix mdst;
103 inet_prefix rsrc;
104 inet_prefix msrc;
105} filter;
106
107static int flush_update(void)
108{
f31a37f7 109 if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
1fb0a998 110 perror("Failed to send flush request");
aba5acdf
SH		 111 return -1;
112 }
113 filter.flushp = 0;
114 return 0;
115}
116
50772dc5 117int print_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
aba5acdf
SH		 118{
119 FILE *fp = (FILE*)arg;
120 struct rtmsg *r = NLMSG_DATA(n);
121 int len = n->nlmsg_len;
122 struct rtattr * tb[RTA_MAX+1];
123 char abuf[256];
124 inet_prefix dst;
125 inet_prefix src;
126 inet_prefix prefsrc;
127 inet_prefix via;
128 int host_len = -1;
e0b29fe7 129 static int ip6_multiple_tables;
34e95647 130 __u32 table;
aba5acdf 131 SPRINT_BUF(b1);
6a79240b 132 static int hz;
aba5acdf
SH		 133
134 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
135 fprintf(stderr, "Not a route: %08x %08x %08x\n",
136 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
137 return 0;
138 }
139 if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
140 return 0;
141 len -= NLMSG_LENGTH(sizeof(*r));
142 if (len < 0) {
143 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
144 return -1;
145 }
146
147 if (r->rtm_family == AF_INET6)
148 host_len = 128;
149 else if (r->rtm_family == AF_INET)
150 host_len = 32;
151 else if (r->rtm_family == AF_DECnet)
152 host_len = 16;
153 else if (r->rtm_family == AF_IPX)
154 host_len = 80;
155
34e95647
PM		 156 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
157 table = rtm_get_table(r, tb);
158
159 if (r->rtm_family == AF_INET6 && table != RT_TABLE_MAIN)
e0b29fe7
PM		 160 ip6_multiple_tables = 1;
161
162 if (r->rtm_family == AF_INET6 && !ip6_multiple_tables) {
bd4bcdad
PM		 163 if (filter.cloned) {
164 if (!(r->rtm_flags&RTM_F_CLONED))
165 return 0;
166 }
aba5acdf 167 if (filter.tb) {
9ab4c85b 168 if (!filter.cloned && r->rtm_flags&RTM_F_CLONED)
bd4bcdad
PM		 169 return 0;
170 if (filter.tb == RT_TABLE_LOCAL) {
171 if (r->rtm_type != RTN_LOCAL)
aba5acdf 172 return 0;
bd4bcdad
PM		 173 } else if (filter.tb == RT_TABLE_MAIN) {
174 if (r->rtm_type == RTN_LOCAL)
aba5acdf 175 return 0;
bd4bcdad
PM		 176 } else {
177 return 0;
aba5acdf
SH		 178 }
179 }
180 } else {
9ab4c85b
SS		 181 if (filter.cloned) {
182 if (!(r->rtm_flags&RTM_F_CLONED))
183 return 0;
184 }
34e95647 185 if (filter.tb > 0 && filter.tb != table)
aba5acdf
SH		 186 return 0;
187 }
188 if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
189 return 0;
190 if ((filter.scope^r->rtm_scope)&filter.scopemask)
191 return 0;
192 if ((filter.type^r->rtm_type)&filter.typemask)
193 return 0;
194 if ((filter.tos^r->rtm_tos)&filter.tosmask)
195 return 0;
196 if (filter.rdst.family &&
197 (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len))
198 return 0;
199 if (filter.mdst.family &&
200 (r->rtm_family != filter.mdst.family ||
201 (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len)))
202 return 0;
203 if (filter.rsrc.family &&
204 (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len))
205 return 0;
206 if (filter.msrc.family &&
207 (r->rtm_family != filter.msrc.family ||
208 (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len)))
209 return 0;
210 if (filter.rvia.family && r->rtm_family != filter.rvia.family)
211 return 0;
212 if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
213 return 0;
214
aba5acdf
SH		 215 memset(&dst, 0, sizeof(dst));
216 dst.family = r->rtm_family;
217 if (tb[RTA_DST])
218 memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
219 if (filter.rsrc.family || filter.msrc.family) {
220 memset(&src, 0, sizeof(src));
221 src.family = r->rtm_family;
222 if (tb[RTA_SRC])
223 memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
224 }
225 if (filter.rvia.bitlen>0) {
226 memset(&via, 0, sizeof(via));
227 via.family = r->rtm_family;
228 if (tb[RTA_GATEWAY])
7849fb55 229 memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len/8);
aba5acdf
SH		 230 }
231 if (filter.rprefsrc.bitlen>0) {
232 memset(&prefsrc, 0, sizeof(prefsrc));
233 prefsrc.family = r->rtm_family;
234 if (tb[RTA_PREFSRC])
7849fb55 235 memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len/8);
aba5acdf
SH		 236 }
237
238 if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
239 return 0;
240 if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
241 inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
242 return 0;
243
244 if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
245 return 0;
246 if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
247 inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
248 return 0;
249
250 if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
251 return 0;
252 if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
253 return 0;
254 if (filter.realmmask) {
255 __u32 realms = 0;
256 if (tb[RTA_FLOW])
257 realms = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
258 if ((realms^filter.realm)&filter.realmmask)
259 return 0;
260 }
261 if (filter.iifmask) {
262 int iif = 0;
263 if (tb[RTA_IIF])
264 iif = *(int*)RTA_DATA(tb[RTA_IIF]);
265 if ((iif^filter.iif)&filter.iifmask)
266 return 0;
267 }
268 if (filter.oifmask) {
269 int oif = 0;
270 if (tb[RTA_OIF])
271 oif = *(int*)RTA_DATA(tb[RTA_OIF]);
272 if ((oif^filter.oif)&filter.oifmask)
273 return 0;
274 }
ae665a52 275 if (filter.flushb &&
aba5acdf
SH		 276 r->rtm_family == AF_INET6 &&
277 r->rtm_dst_len == 0 &&
278 r->rtm_type == RTN_UNREACHABLE &&
279 tb[RTA_PRIORITY] &&
280 *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
281 return 0;
282
283 if (filter.flushb) {
284 struct nlmsghdr *fn;
285 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
286 if (flush_update())
287 return -1;
288 }
289 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
290 memcpy(fn, n, n->nlmsg_len);
291 fn->nlmsg_type = RTM_DELROUTE;
292 fn->nlmsg_flags = NLM_F_REQUEST;
351efcde 293 fn->nlmsg_seq = ++rth.seq;
aba5acdf
SH		 294 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
295 filter.flushed++;
296 if (show_stats < 2)
297 return 0;
298 }
299
300 if (n->nlmsg_type == RTM_DELROUTE)
301 fprintf(fp, "Deleted ");
302 if (r->rtm_type != RTN_UNICAST && !filter.type)
303 fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
304
305 if (tb[RTA_DST]) {
306 if (r->rtm_dst_len != host_len) {
307 fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family,
308 RTA_PAYLOAD(tb[RTA_DST]),
309 RTA_DATA(tb[RTA_DST]),
310 abuf, sizeof(abuf)),
311 r->rtm_dst_len
312 );
313 } else {
314 fprintf(fp, "%s ", format_host(r->rtm_family,
315 RTA_PAYLOAD(tb[RTA_DST]),
316 RTA_DATA(tb[RTA_DST]),
317 abuf, sizeof(abuf))
318 );
319 }
320 } else if (r->rtm_dst_len) {
321 fprintf(fp, "0/%d ", r->rtm_dst_len);
322 } else {
323 fprintf(fp, "default ");
324 }
325 if (tb[RTA_SRC]) {
326 if (r->rtm_src_len != host_len) {
327 fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family,
328 RTA_PAYLOAD(tb[RTA_SRC]),
329 RTA_DATA(tb[RTA_SRC]),
330 abuf, sizeof(abuf)),
331 r->rtm_src_len
332 );
333 } else {
334 fprintf(fp, "from %s ", format_host(r->rtm_family,
335 RTA_PAYLOAD(tb[RTA_SRC]),
336 RTA_DATA(tb[RTA_SRC]),
337 abuf, sizeof(abuf))
338 );
339 }
340 } else if (r->rtm_src_len) {
341 fprintf(fp, "from 0/%u ", r->rtm_src_len);
342 }
343 if (r->rtm_tos && filter.tosmask != -1) {
344 SPRINT_BUF(b1);
345 fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
346 }
02d2ae55 347
aba5acdf 348 if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
ae665a52 349 fprintf(fp, "via %s ",
aba5acdf
SH		 350 format_host(r->rtm_family,
351 RTA_PAYLOAD(tb[RTA_GATEWAY]),
352 RTA_DATA(tb[RTA_GATEWAY]),
353 abuf, sizeof(abuf)));
354 }
355 if (tb[RTA_OIF] && filter.oifmask != -1)
356 fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
357
358 if (!(r->rtm_flags&RTM_F_CLONED)) {
34e95647
PM		 359 if (table != RT_TABLE_MAIN && !filter.tb)
360 fprintf(fp, " table %s ", rtnl_rttable_n2a(table, b1, sizeof(b1)));
aba5acdf
SH		 361 if (r->rtm_protocol != RTPROT_BOOT && filter.protocolmask != -1)
362 fprintf(fp, " proto %s ", rtnl_rtprot_n2a(r->rtm_protocol, b1, sizeof(b1)));
363 if (r->rtm_scope != RT_SCOPE_UNIVERSE && filter.scopemask != -1)
364 fprintf(fp, " scope %s ", rtnl_rtscope_n2a(r->rtm_scope, b1, sizeof(b1)));
365 }
366 if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
367 /* Do not use format_host(). It is our local addr
368 and symbolic name will not be useful.
369 */
ae665a52 370 fprintf(fp, " src %s ",
aba5acdf
SH		 371 rt_addr_n2a(r->rtm_family,
372 RTA_PAYLOAD(tb[RTA_PREFSRC]),
373 RTA_DATA(tb[RTA_PREFSRC]),
374 abuf, sizeof(abuf)));
375 }
376 if (tb[RTA_PRIORITY])
377 fprintf(fp, " metric %d ", *(__u32*)RTA_DATA(tb[RTA_PRIORITY]));
378 if (r->rtm_flags & RTNH_F_DEAD)
379 fprintf(fp, "dead ");
380 if (r->rtm_flags & RTNH_F_ONLINK)
381 fprintf(fp, "onlink ");
382 if (r->rtm_flags & RTNH_F_PERVASIVE)
383 fprintf(fp, "pervasive ");
aba5acdf
SH		 384 if (r->rtm_flags & RTM_F_NOTIFY)
385 fprintf(fp, "notify ");
386
387 if (tb[RTA_FLOW] && filter.realmmask != ~0U) {
388 __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
389 __u32 from = to>>16;
390 to &= 0xFFFF;
391 fprintf(fp, "realm%s ", from ? "s" : "");
392 if (from) {
393 fprintf(fp, "%s/",
394 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
395 }
396 fprintf(fp, "%s ",
397 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
398 }
399 if ((r->rtm_flags&RTM_F_CLONED) && r->rtm_family == AF_INET) {
400 __u32 flags = r->rtm_flags&~0xFFFF;
401 int first = 1;
402
403 fprintf(fp, "%s cache ", _SL_);
404
405#define PRTFL(fl,flname) if (flags&RTCF_##fl) { \
406 flags &= ~RTCF_##fl; \
407 fprintf(fp, "%s" flname "%s", first ? "<" : "", flags ? "," : "> "); \
408 first = 0; }
409 PRTFL(LOCAL, "local");
410 PRTFL(REJECT, "reject");
411 PRTFL(MULTICAST, "mc");
412 PRTFL(BROADCAST, "brd");
413 PRTFL(DNAT, "dst-nat");
414 PRTFL(SNAT, "src-nat");
415 PRTFL(MASQ, "masq");
416 PRTFL(DIRECTDST, "dst-direct");
417 PRTFL(DIRECTSRC, "src-direct");
418 PRTFL(REDIRECTED, "redirected");
419 PRTFL(DOREDIRECT, "redirect");
420 PRTFL(FAST, "fastroute");
421 PRTFL(NOTIFY, "notify");
422 PRTFL(TPROXY, "proxy");
63a0f20a 423
aba5acdf
SH		 424 if (flags)
425 fprintf(fp, "%s%x> ", first ? "<" : "", flags);
426 if (tb[RTA_CACHEINFO]) {
427 struct rta_cacheinfo *ci = RTA_DATA(tb[RTA_CACHEINFO]);
aba5acdf 428 if (!hz)
5e8bc631 429 hz = get_user_hz();
aba5acdf
SH		 430 if (ci->rta_expires != 0)
431 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
432 if (ci->rta_error != 0)
433 fprintf(fp, " error %d", ci->rta_error);
434 if (show_stats) {
435 if (ci->rta_clntref)
436 fprintf(fp, " users %d", ci->rta_clntref);
437 if (ci->rta_used != 0)
438 fprintf(fp, " used %d", ci->rta_used);
439 if (ci->rta_lastuse != 0)
440 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
441 }
442#ifdef RTNETLINK_HAVE_PEERINFO
443 if (ci->rta_id)
444 fprintf(fp, " ipid 0x%04x", ci->rta_id);
445 if (ci->rta_ts || ci->rta_tsage)
446 fprintf(fp, " ts 0x%x tsage %dsec", ci->rta_ts, ci->rta_tsage);
447#endif
448 }
449 } else if (r->rtm_family == AF_INET6) {
450 struct rta_cacheinfo *ci = NULL;
451 if (tb[RTA_CACHEINFO])
452 ci = RTA_DATA(tb[RTA_CACHEINFO]);
453 if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
aba5acdf 454 if (!hz)
5e8bc631 455 hz = get_user_hz();
aba5acdf
SH		 456 if (r->rtm_flags & RTM_F_CLONED)
457 fprintf(fp, "%s cache ", _SL_);
458 if (ci->rta_expires)
459 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
460 if (ci->rta_error != 0)
461 fprintf(fp, " error %d", ci->rta_error);
462 if (show_stats) {
463 if (ci->rta_clntref)
464 fprintf(fp, " users %d", ci->rta_clntref);
465 if (ci->rta_used != 0)
466 fprintf(fp, " used %d", ci->rta_used);
467 if (ci->rta_lastuse != 0)
468 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
469 }
470 } else if (ci) {
471 if (ci->rta_error != 0)
472 fprintf(fp, " error %d", ci->rta_error);
473 }
474 }
475 if (tb[RTA_METRICS]) {
476 int i;
477 unsigned mxlock = 0;
478 struct rtattr *mxrta[RTAX_MAX+1];
479
aba5acdf
SH		 480 parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(tb[RTA_METRICS]),
481 RTA_PAYLOAD(tb[RTA_METRICS]));
482 if (mxrta[RTAX_LOCK])
483 mxlock = *(unsigned*)RTA_DATA(mxrta[RTAX_LOCK]);
484
f38c7334 485 for (i=2; i<= RTAX_MAX; i++) {
ced61d7d
SH		 486 unsigned val;
487
aba5acdf
SH		 488 if (mxrta[i] == NULL)
489 continue;
490 if (!hz)
491 hz = get_hz();
6a79240b
SH		 492
493 if (i < sizeof(mx_names)/sizeof(char*) && mx_names[i])
494 fprintf(fp, " %s", mx_names[i]);
aba5acdf 495 else
5e8bc631 496 fprintf(fp, " metric %d", i);
aba5acdf
SH		 497 if (mxlock & (1<<i))
498 fprintf(fp, " lock");
499
ced61d7d
SH		 500 val = *(unsigned*)RTA_DATA(mxrta[i]);
501 switch (i) {
502 case RTAX_HOPLIMIT:
503 if ((long)val == -1)
504 val = 0;
505 /* fall through */
506 default:
507 fprintf(fp, " %u", val);
508 break;
aba5acdf 509
ced61d7d
SH		 510 case RTAX_RTT:
511 case RTAX_RTTVAR:
512 case RTAX_RTO_MIN:
aba5acdf
SH		 513 val *= 1000;
514 if (i == RTAX_RTT)
515 val /= 8;
54e0b2e7 516 else if (i == RTAX_RTTVAR)
aba5acdf 517 val /= 4;
ced61d7d 518
aba5acdf 519 if (val >= hz)
ced61d7d
SH		 520 fprintf(fp, " %llums",
521 (unsigned long long) val / hz);
aba5acdf 522 else
ced61d7d
SH		 523 fprintf(fp, " %.2fms",
524 (double)val / hz);
aba5acdf
SH		 525 }
526 }
527 }
528 if (tb[RTA_IIF] && filter.iifmask != -1) {
529 fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
530 }
531 if (tb[RTA_MULTIPATH]) {
532 struct rtnexthop *nh = RTA_DATA(tb[RTA_MULTIPATH]);
533 int first = 0;
534
535 len = RTA_PAYLOAD(tb[RTA_MULTIPATH]);
536
537 for (;;) {
538 if (len < sizeof(*nh))
539 break;
540 if (nh->rtnh_len > len)
541 break;
542 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
543 if (first)
544 fprintf(fp, " Oifs:");
545 else
546 fprintf(fp, " ");
547 } else
548 fprintf(fp, "%s\tnexthop", _SL_);
549 if (nh->rtnh_len > sizeof(*nh)) {
aba5acdf
SH		 550 parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh), nh->rtnh_len - sizeof(*nh));
551 if (tb[RTA_GATEWAY]) {
ae665a52 552 fprintf(fp, " via %s ",
aba5acdf
SH		 553 format_host(r->rtm_family,
554 RTA_PAYLOAD(tb[RTA_GATEWAY]),
555 RTA_DATA(tb[RTA_GATEWAY]),
556 abuf, sizeof(abuf)));
557 }
f4f6d640
PM		 558 if (tb[RTA_FLOW]) {
559 __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
560 __u32 from = to>>16;
561 to &= 0xFFFF;
562 fprintf(fp, " realm%s ", from ? "s" : "");
563 if (from) {
564 fprintf(fp, "%s/",
565 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
566 }
567 fprintf(fp, "%s",
568 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
569 }
aba5acdf
SH		 570 }
571 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
572 fprintf(fp, " %s", ll_index_to_name(nh->rtnh_ifindex));
573 if (nh->rtnh_hops != 1)
574 fprintf(fp, "(ttl>%d)", nh->rtnh_hops);
575 } else {
576 fprintf(fp, " dev %s", ll_index_to_name(nh->rtnh_ifindex));
577 fprintf(fp, " weight %d", nh->rtnh_hops+1);
578 }
579 if (nh->rtnh_flags & RTNH_F_DEAD)
580 fprintf(fp, " dead");
581 if (nh->rtnh_flags & RTNH_F_ONLINK)
582 fprintf(fp, " onlink");
583 if (nh->rtnh_flags & RTNH_F_PERVASIVE)
584 fprintf(fp, " pervasive");
585 len -= NLMSG_ALIGN(nh->rtnh_len);
586 nh = RTNH_NEXT(nh);
587 }
588 }
589 fprintf(fp, "\n");
590 fflush(fp);
591 return 0;
592}
593
594
595int parse_one_nh(struct rtattr *rta, struct rtnexthop *rtnh, int *argcp, char ***argvp)
596{
597 int argc = *argcp;
598 char **argv = *argvp;
599
600 while (++argv, --argc > 0) {
601 if (strcmp(*argv, "via") == 0) {
602 NEXT_ARG();
603 rta_addattr32(rta, 4096, RTA_GATEWAY, get_addr32(*argv));
604 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
605 } else if (strcmp(*argv, "dev") == 0) {
606 NEXT_ARG();
607 if ((rtnh->rtnh_ifindex = ll_name_to_index(*argv)) == 0) {
608 fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
609 exit(1);
610 }
611 } else if (strcmp(*argv, "weight") == 0) {
612 unsigned w;
613 NEXT_ARG();
614 if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
615 invarg("\"weight\" is invalid\n", *argv);
616 rtnh->rtnh_hops = w - 1;
617 } else if (strcmp(*argv, "onlink") == 0) {
618 rtnh->rtnh_flags |= RTNH_F_ONLINK;
f4f6d640
PM		 619 } else if (matches(*argv, "realms") == 0) {
620 __u32 realm;
621 NEXT_ARG();
622 if (get_rt_realms(&realm, *argv))
623 invarg("\"realm\" value is invalid\n", *argv);
624 rta_addattr32(rta, 4096, RTA_FLOW, realm);
625 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
aba5acdf
SH		 626 } else
627 break;
628 }
629 *argcp = argc;
630 *argvp = argv;
631 return 0;
632}
633
634int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r, int argc, char **argv)
635{
636 char buf[1024];
637 struct rtattr *rta = (void*)buf;
638 struct rtnexthop *rtnh;
639
640 rta->rta_type = RTA_MULTIPATH;
641 rta->rta_len = RTA_LENGTH(0);
642 rtnh = RTA_DATA(rta);
643
644 while (argc > 0) {
645 if (strcmp(*argv, "nexthop") != 0) {
646 fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
647 exit(-1);
648 }
649 if (argc <= 1) {
650 fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
651 exit(-1);
652 }
653 memset(rtnh, 0, sizeof(*rtnh));
654 rtnh->rtnh_len = sizeof(*rtnh);
655 rta->rta_len += rtnh->rtnh_len;
656 parse_one_nh(rta, rtnh, &argc, &argv);
657 rtnh = RTNH_NEXT(rtnh);
658 }
659
660 if (rta->rta_len > RTA_LENGTH(0))
661 addattr_l(n, 1024, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta));
662 return 0;
663}
664
665
666int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
667{
aba5acdf
SH		 668 struct {
669 struct nlmsghdr n;
670 struct rtmsg r;
671 char buf[1024];
672 } req;
673 char mxbuf[256];
674 struct rtattr * mxrta = (void*)mxbuf;
675 unsigned mxlock = 0;
676 char *d = NULL;
677 int gw_ok = 0;
678 int dst_ok = 0;
679 int nhs_ok = 0;
680 int scope_ok = 0;
681 int table_ok = 0;
682 int proto_ok = 0;
683 int type_ok = 0;
54e0b2e7 684 int raw = 0;
aba5acdf
SH		 685
686 memset(&req, 0, sizeof(req));
687
688 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
689 req.n.nlmsg_flags = NLM_F_REQUEST|flags;
690 req.n.nlmsg_type = cmd;
691 req.r.rtm_family = preferred_family;
692 req.r.rtm_table = RT_TABLE_MAIN;
693 req.r.rtm_scope = RT_SCOPE_NOWHERE;
694
695 if (cmd != RTM_DELROUTE) {
696 req.r.rtm_protocol = RTPROT_BOOT;
697 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
698 req.r.rtm_type = RTN_UNICAST;
699 }
700
701 mxrta->rta_type = RTA_METRICS;
702 mxrta->rta_len = RTA_LENGTH(0);
703
704 while (argc > 0) {
705 if (strcmp(*argv, "src") == 0) {
706 inet_prefix addr;
707 NEXT_ARG();
708 get_addr(&addr, *argv, req.r.rtm_family);
709 if (req.r.rtm_family == AF_UNSPEC)
710 req.r.rtm_family = addr.family;
711 addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
712 } else if (strcmp(*argv, "via") == 0) {
713 inet_prefix addr;
714 gw_ok = 1;
715 NEXT_ARG();
716 get_addr(&addr, *argv, req.r.rtm_family);
717 if (req.r.rtm_family == AF_UNSPEC)
718 req.r.rtm_family = addr.family;
719 addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
720 } else if (strcmp(*argv, "from") == 0) {
721 inet_prefix addr;
722 NEXT_ARG();
723 get_prefix(&addr, *argv, req.r.rtm_family);
724 if (req.r.rtm_family == AF_UNSPEC)
725 req.r.rtm_family = addr.family;
726 if (addr.bytelen)
727 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
728 req.r.rtm_src_len = addr.bitlen;
729 } else if (strcmp(*argv, "tos") == 0 ||
730 matches(*argv, "dsfield") == 0) {
731 __u32 tos;
732 NEXT_ARG();
733 if (rtnl_dsfield_a2n(&tos, *argv))
734 invarg("\"tos\" value is invalid\n", *argv);
735 req.r.rtm_tos = tos;
736 } else if (matches(*argv, "metric") == 0 ||
737 matches(*argv, "priority") == 0 ||
738 matches(*argv, "preference") == 0) {
739 __u32 metric;
740 NEXT_ARG();
741 if (get_u32(&metric, *argv, 0))
742 invarg("\"metric\" value is invalid\n", *argv);
743 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
744 } else if (strcmp(*argv, "scope") == 0) {
f332d169 745 __u32 scope = 0;
aba5acdf
SH		 746 NEXT_ARG();
747 if (rtnl_rtscope_a2n(&scope, *argv))
748 invarg("invalid \"scope\" value\n", *argv);
749 req.r.rtm_scope = scope;
750 scope_ok = 1;
751 } else if (strcmp(*argv, "mtu") == 0) {
752 unsigned mtu;
753 NEXT_ARG();
754 if (strcmp(*argv, "lock") == 0) {
755 mxlock |= (1<<RTAX_MTU);
756 NEXT_ARG();
757 }
758 if (get_unsigned(&mtu, *argv, 0))
759 invarg("\"mtu\" value is invalid\n", *argv);
760 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
71e58151
GBY		 761#ifdef RTAX_HOPLIMIT
762 } else if (strcmp(*argv, "hoplimit") == 0) {
763 unsigned hoplimit;
764 NEXT_ARG();
765 if (strcmp(*argv, "lock") == 0) {
766 mxlock |= (1<<RTAX_HOPLIMIT);
767 NEXT_ARG();
768 }
769 if (get_unsigned(&hoplimit, *argv, 0))
770 invarg("\"hoplimit\" value is invalid\n", *argv);
771 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit);
772#endif
aba5acdf
SH		 773#ifdef RTAX_ADVMSS
774 } else if (strcmp(*argv, "advmss") == 0) {
775 unsigned mss;
776 NEXT_ARG();
777 if (strcmp(*argv, "lock") == 0) {
778 mxlock |= (1<<RTAX_ADVMSS);
779 NEXT_ARG();
780 }
781 if (get_unsigned(&mss, *argv, 0))
782 invarg("\"mss\" value is invalid\n", *argv);
783 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
784#endif
785#ifdef RTAX_REORDERING
786 } else if (matches(*argv, "reordering") == 0) {
787 unsigned reord;
788 NEXT_ARG();
789 if (strcmp(*argv, "lock") == 0) {
790 mxlock |= (1<<RTAX_REORDERING);
791 NEXT_ARG();
792 }
793 if (get_unsigned(&reord, *argv, 0))
794 invarg("\"reordering\" value is invalid\n", *argv);
795 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
796#endif
797 } else if (strcmp(*argv, "rtt") == 0) {
798 unsigned rtt;
799 NEXT_ARG();
800 if (strcmp(*argv, "lock") == 0) {
801 mxlock |= (1<<RTAX_RTT);
802 NEXT_ARG();
803 }
54e0b2e7 804 if (get_jiffies(&rtt, *argv, 0, &raw))
aba5acdf 805 invarg("\"rtt\" value is invalid\n", *argv);
54e0b2e7
RJ		 806 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT,
807 (raw) ? rtt : rtt * 8);
808 } else if (strcmp(*argv, "rto_min") == 0) {
809 unsigned rto_min;
810 NEXT_ARG();
811 mxlock |= (1<<RTAX_RTO_MIN);
812 if (get_jiffies(&rto_min, *argv, 0, &raw))
813 invarg("\"rto_min\" value is invalid\n",
814 *argv);
815 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN,
816 rto_min);
aba5acdf
SH		 817 } else if (matches(*argv, "window") == 0) {
818 unsigned win;
819 NEXT_ARG();
820 if (strcmp(*argv, "lock") == 0) {
821 mxlock |= (1<<RTAX_WINDOW);
822 NEXT_ARG();
823 }
824 if (get_unsigned(&win, *argv, 0))
825 invarg("\"window\" value is invalid\n", *argv);
826 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
827 } else if (matches(*argv, "cwnd") == 0) {
828 unsigned win;
829 NEXT_ARG();
830 if (strcmp(*argv, "lock") == 0) {
831 mxlock |= (1<<RTAX_CWND);
832 NEXT_ARG();
833 }
834 if (get_unsigned(&win, *argv, 0))
835 invarg("\"cwnd\" value is invalid\n", *argv);
836 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
a1f1143e
VW		 837 } else if (matches(*argv, "initcwnd") == 0) {
838 unsigned win;
839 NEXT_ARG();
840 if (strcmp(*argv, "lock") == 0) {
841 mxlock |= (1<<RTAX_INITCWND);
842 NEXT_ARG();
843 }
844 if (get_unsigned(&win, *argv, 0))
845 invarg("\"initcwnd\" value is invalid\n", *argv);
846 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITCWND, win);
aba5acdf
SH		 847 } else if (matches(*argv, "rttvar") == 0) {
848 unsigned win;
849 NEXT_ARG();
850 if (strcmp(*argv, "lock") == 0) {
851 mxlock |= (1<<RTAX_RTTVAR);
852 NEXT_ARG();
853 }
54e0b2e7 854 if (get_jiffies(&win, *argv, 0, &raw))
aba5acdf 855 invarg("\"rttvar\" value is invalid\n", *argv);
54e0b2e7
RJ		 856 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR,
857 (raw) ? win : win * 4);
aba5acdf
SH		 858 } else if (matches(*argv, "ssthresh") == 0) {
859 unsigned win;
860 NEXT_ARG();
861 if (strcmp(*argv, "lock") == 0) {
862 mxlock |= (1<<RTAX_SSTHRESH);
863 NEXT_ARG();
864 }
865 if (get_unsigned(&win, *argv, 0))
866 invarg("\"ssthresh\" value is invalid\n", *argv);
867 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
868 } else if (matches(*argv, "realms") == 0) {
869 __u32 realm;
870 NEXT_ARG();
871 if (get_rt_realms(&realm, *argv))
872 invarg("\"realm\" value is invalid\n", *argv);
873 addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
874 } else if (strcmp(*argv, "onlink") == 0) {
875 req.r.rtm_flags |= RTNH_F_ONLINK;
aba5acdf
SH		 876 } else if (strcmp(*argv, "nexthop") == 0) {
877 nhs_ok = 1;
878 break;
879 } else if (matches(*argv, "protocol") == 0) {
f332d169 880 __u32 prot;
aba5acdf
SH		 881 NEXT_ARG();
882 if (rtnl_rtprot_a2n(&prot, *argv))
883 invarg("\"protocol\" value is invalid\n", *argv);
884 req.r.rtm_protocol = prot;
885 proto_ok =1;
886 } else if (matches(*argv, "table") == 0) {
f332d169 887 __u32 tid;
aba5acdf
SH		 888 NEXT_ARG();
889 if (rtnl_rttable_a2n(&tid, *argv))
890 invarg("\"table\" value is invalid\n", *argv);
34e95647
PM		 891 if (tid < 256)
892 req.r.rtm_table = tid;
893 else {
894 req.r.rtm_table = RT_TABLE_UNSPEC;
895 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
896 }
aba5acdf
SH		 897 table_ok = 1;
898 } else if (strcmp(*argv, "dev") == 0 ||
899 strcmp(*argv, "oif") == 0) {
900 NEXT_ARG();
901 d = *argv;
902 } else {
903 int type;
904 inet_prefix dst;
905
906 if (strcmp(*argv, "to") == 0) {
907 NEXT_ARG();
908 }
909 if ((**argv < '0' || **argv > '9') &&
910 rtnl_rtntype_a2n(&type, *argv) == 0) {
911 NEXT_ARG();
912 req.r.rtm_type = type;
913 type_ok = 1;
914 }
915
916 if (matches(*argv, "help") == 0)
917 usage();
918 if (dst_ok)
919 duparg2("to", *argv);
920 get_prefix(&dst, *argv, req.r.rtm_family);
921 if (req.r.rtm_family == AF_UNSPEC)
922 req.r.rtm_family = dst.family;
923 req.r.rtm_dst_len = dst.bitlen;
924 dst_ok = 1;
925 if (dst.bytelen)
926 addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
927 }
928 argc--; argv++;
929 }
930
aba5acdf
SH		 931 if (d || nhs_ok) {
932 int idx;
933
934 ll_init_map(&rth);
935
936 if (d) {
937 if ((idx = ll_name_to_index(d)) == 0) {
938 fprintf(stderr, "Cannot find device \"%s\"\n", d);
939 return -1;
940 }
941 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
942 }
943 }
944
945 if (mxrta->rta_len > RTA_LENGTH(0)) {
946 if (mxlock)
947 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
948 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
949 }
950
951 if (nhs_ok)
952 parse_nexthops(&req.n, &req.r, argc, argv);
953
954 if (!table_ok) {
955 if (req.r.rtm_type == RTN_LOCAL ||
956 req.r.rtm_type == RTN_BROADCAST ||
957 req.r.rtm_type == RTN_NAT ||
958 req.r.rtm_type == RTN_ANYCAST)
959 req.r.rtm_table = RT_TABLE_LOCAL;
960 }
961 if (!scope_ok) {
962 if (req.r.rtm_type == RTN_LOCAL ||
963 req.r.rtm_type == RTN_NAT)
964 req.r.rtm_scope = RT_SCOPE_HOST;
965 else if (req.r.rtm_type == RTN_BROADCAST ||
966 req.r.rtm_type == RTN_MULTICAST ||
967 req.r.rtm_type == RTN_ANYCAST)
968 req.r.rtm_scope = RT_SCOPE_LINK;
969 else if (req.r.rtm_type == RTN_UNICAST ||
970 req.r.rtm_type == RTN_UNSPEC) {
971 if (cmd == RTM_DELROUTE)
972 req.r.rtm_scope = RT_SCOPE_NOWHERE;
973 else if (!gw_ok && !nhs_ok)
974 req.r.rtm_scope = RT_SCOPE_LINK;
975 }
976 }
977
978 if (req.r.rtm_family == AF_UNSPEC)
979 req.r.rtm_family = AF_INET;
980
981 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
982 exit(2);
983
984 return 0;
985}
986
987static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
988{
989 struct {
990 struct nlmsghdr nlh;
991 struct rtmsg rtm;
992 } req;
993 struct sockaddr_nl nladdr;
994
995 memset(&nladdr, 0, sizeof(nladdr));
996 memset(&req, 0, sizeof(req));
997 nladdr.nl_family = AF_NETLINK;
998
999 req.nlh.nlmsg_len = sizeof(req);
1000 req.nlh.nlmsg_type = RTM_GETROUTE;
1001 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST;
1002 req.nlh.nlmsg_pid = 0;
1003 req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
1004 req.rtm.rtm_family = family;
1005 req.rtm.rtm_flags |= RTM_F_CLONED;
1006
1007 return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
1008}
1009
1010static int iproute_flush_cache(void)
1011{
1012#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1013
1014 int len;
1015 int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY);
1016 char *buffer = "-1";
1017
1018 if (flush_fd < 0) {
1019 fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH);
1020 return -1;
1021 }
1022
1023 len = strlen (buffer);
ae665a52 1024
aba5acdf
SH		 1025 if ((write (flush_fd, (void *)buffer, len)) < len) {
1026 fprintf (stderr, "Cannot flush routing cache\n");
1027 return -1;
1028 }
1029 close(flush_fd);
1030 return 0;
1031}
1032
1033
1034static int iproute_list_or_flush(int argc, char **argv, int flush)
1035{
1036 int do_ipv6 = preferred_family;
aba5acdf
SH		 1037 char *id = NULL;
1038 char *od = NULL;
1039
1040 iproute_reset_filter();
1041 filter.tb = RT_TABLE_MAIN;
1042
1043 if (flush && argc <= 0) {
1044 fprintf(stderr, "\"ip route flush\" requires arguments.\n");
1045 return -1;
1046 }
1047
1048 while (argc > 0) {
1049 if (matches(*argv, "table") == 0) {
f332d169 1050 __u32 tid;
aba5acdf
SH		 1051 NEXT_ARG();
1052 if (rtnl_rttable_a2n(&tid, *argv)) {
1053 if (strcmp(*argv, "all") == 0) {
bd4bcdad 1054 filter.tb = 0;
aba5acdf 1055 } else if (strcmp(*argv, "cache") == 0) {
bd4bcdad 1056 filter.cloned = 1;
aba5acdf
SH		 1057 } else if (strcmp(*argv, "help") == 0) {
1058 usage();
1059 } else {
1060 invarg("table id value is invalid\n", *argv);
1061 }
bd4bcdad
PM		 1062 } else
1063 filter.tb = tid;
aba5acdf
SH		 1064 } else if (matches(*argv, "cached") == 0 ||
1065 matches(*argv, "cloned") == 0) {
bd4bcdad 1066 filter.cloned = 1;
aba5acdf
SH		 1067 } else if (strcmp(*argv, "tos") == 0 ||
1068 matches(*argv, "dsfield") == 0) {
1069 __u32 tos;
1070 NEXT_ARG();
1071 if (rtnl_dsfield_a2n(&tos, *argv))
1072 invarg("TOS value is invalid\n", *argv);
1073 filter.tos = tos;
1074 filter.tosmask = -1;
1075 } else if (matches(*argv, "protocol") == 0) {
f332d169 1076 __u32 prot = 0;
aba5acdf
SH		 1077 NEXT_ARG();
1078 filter.protocolmask = -1;
1079 if (rtnl_rtprot_a2n(&prot, *argv)) {
1080 if (strcmp(*argv, "all") != 0)
1081 invarg("invalid \"protocol\"\n", *argv);
1082 prot = 0;
1083 filter.protocolmask = 0;
1084 }
1085 filter.protocol = prot;
1086 } else if (matches(*argv, "scope") == 0) {
f332d169 1087 __u32 scope = 0;
aba5acdf
SH		 1088 NEXT_ARG();
1089 filter.scopemask = -1;
1090 if (rtnl_rtscope_a2n(&scope, *argv)) {
1091 if (strcmp(*argv, "all") != 0)
1092 invarg("invalid \"scope\"\n", *argv);
1093 scope = RT_SCOPE_NOWHERE;
1094 filter.scopemask = 0;
1095 }
1096 filter.scope = scope;
1097 } else if (matches(*argv, "type") == 0) {
1098 int type;
1099 NEXT_ARG();
1100 filter.typemask = -1;
1101 if (rtnl_rtntype_a2n(&type, *argv))
1102 invarg("node type value is invalid\n", *argv);
1103 filter.type = type;
1104 } else if (strcmp(*argv, "dev") == 0 ||
1105 strcmp(*argv, "oif") == 0) {
1106 NEXT_ARG();
1107 od = *argv;
1108 } else if (strcmp(*argv, "iif") == 0) {
1109 NEXT_ARG();
1110 id = *argv;
1111 } else if (strcmp(*argv, "via") == 0) {
1112 NEXT_ARG();
1113 get_prefix(&filter.rvia, *argv, do_ipv6);
1114 } else if (strcmp(*argv, "src") == 0) {
1115 NEXT_ARG();
1116 get_prefix(&filter.rprefsrc, *argv, do_ipv6);
1117 } else if (matches(*argv, "realms") == 0) {
1118 __u32 realm;
1119 NEXT_ARG();
1120 if (get_rt_realms(&realm, *argv))
1121 invarg("invalid realms\n", *argv);
1122 filter.realm = realm;
1123 filter.realmmask = ~0U;
1124 if ((filter.realm&0xFFFF) == 0 &&
1125 (*argv)[strlen(*argv) - 1] == '/')
1126 filter.realmmask &= ~0xFFFF;
1127 if ((filter.realm&0xFFFF0000U) == 0 &&
1128 (strchr(*argv, '/') == NULL ||
1129 (*argv)[0] == '/'))
1130 filter.realmmask &= ~0xFFFF0000U;
1131 } else if (matches(*argv, "from") == 0) {
1132 NEXT_ARG();
1133 if (matches(*argv, "root") == 0) {
1134 NEXT_ARG();
1135 get_prefix(&filter.rsrc, *argv, do_ipv6);
1136 } else if (matches(*argv, "match") == 0) {
1137 NEXT_ARG();
1138 get_prefix(&filter.msrc, *argv, do_ipv6);
1139 } else {
1140 if (matches(*argv, "exact") == 0) {
1141 NEXT_ARG();
1142 }
1143 get_prefix(&filter.msrc, *argv, do_ipv6);
1144 filter.rsrc = filter.msrc;
1145 }
1146 } else {
1147 if (matches(*argv, "to") == 0) {
1148 NEXT_ARG();
1149 }
1150 if (matches(*argv, "root") == 0) {
1151 NEXT_ARG();
1152 get_prefix(&filter.rdst, *argv, do_ipv6);
1153 } else if (matches(*argv, "match") == 0) {
1154 NEXT_ARG();
1155 get_prefix(&filter.mdst, *argv, do_ipv6);
1156 } else {
1157 if (matches(*argv, "exact") == 0) {
1158 NEXT_ARG();
1159 }
1160 get_prefix(&filter.mdst, *argv, do_ipv6);
1161 filter.rdst = filter.mdst;
1162 }
1163 }
1164 argc--; argv++;
1165 }
1166
1167 if (do_ipv6 == AF_UNSPEC && filter.tb)
1168 do_ipv6 = AF_INET;
1169
aba5acdf
SH		 1170 ll_init_map(&rth);
1171
1172 if (id || od) {
1173 int idx;
1174
1175 if (id) {
1176 if ((idx = ll_name_to_index(id)) == 0) {
1177 fprintf(stderr, "Cannot find device \"%s\"\n", id);
1178 return -1;
1179 }
1180 filter.iif = idx;
1181 filter.iifmask = -1;
1182 }
1183 if (od) {
1184 if ((idx = ll_name_to_index(od)) == 0) {
1185 fprintf(stderr, "Cannot find device \"%s\"\n", od);
1186 return -1;
1187 }
1188 filter.oif = idx;
1189 filter.oifmask = -1;
1190 }
1191 }
1192
1193 if (flush) {
1194 int round = 0;
1195 char flushb[4096-512];
33551240 1196 time_t start = time(0);
aba5acdf 1197
bd4bcdad 1198 if (filter.cloned) {
aba5acdf
SH		 1199 if (do_ipv6 != AF_INET6) {
1200 iproute_flush_cache();
1201 if (show_stats)
1202 printf("*** IPv4 routing cache is flushed.\n");
1203 }
1204 if (do_ipv6 == AF_INET)
1205 return 0;
1206 }
1207
1208 filter.flushb = flushb;
1209 filter.flushp = 0;
1210 filter.flushe = sizeof(flushb);
aba5acdf
SH		 1211
1212 for (;;) {
1213 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1214 perror("Cannot send dump request");
1215 exit(1);
1216 }
1217 filter.flushed = 0;
1218 if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
1219 fprintf(stderr, "Flush terminated\n");
1220 exit(1);
1221 }
1222 if (filter.flushed == 0) {
f0b34d2d
AH		 1223 if (show_stats) {
1224 if (round == 0 && (!filter.cloned || do_ipv6 == AF_INET6))
1225 printf("Nothing to flush.\n");
1226 else
1227 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
1228 }
aba5acdf
SH		 1229 fflush(stdout);
1230 return 0;
1231 }
1232 round++;
1233 if (flush_update() < 0)
1234 exit(1);
33551240
SH		 1235
1236 if (time(0) - start > 30) {
1237 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1238 time(0) - start, filter.flushed);
1239 exit(1);
1240 }
1241
aba5acdf
SH		 1242 if (show_stats) {
1243 printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed);
1244 fflush(stdout);
1245 }
1246 }
1247 }
1248
bd4bcdad 1249 if (!filter.cloned) {
aba5acdf
SH		 1250 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1251 perror("Cannot send dump request");
1252 exit(1);
1253 }
1254 } else {
1255 if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
1256 perror("Cannot send dump request");
1257 exit(1);
1258 }
1259 }
1260
1261 if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
1262 fprintf(stderr, "Dump terminated\n");
1263 exit(1);
1264 }
1265
1266 exit(0);
1267}
1268
1269
1270int iproute_get(int argc, char **argv)
1271{
aba5acdf
SH		 1272 struct {
1273 struct nlmsghdr n;
1274 struct rtmsg r;
1275 char buf[1024];
1276 } req;
1277 char *idev = NULL;
1278 char *odev = NULL;
1279 int connected = 0;
1280 int from_ok = 0;
1281
1282 memset(&req, 0, sizeof(req));
1283
1284 iproute_reset_filter();
1285
1286 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
1287 req.n.nlmsg_flags = NLM_F_REQUEST;
1288 req.n.nlmsg_type = RTM_GETROUTE;
1289 req.r.rtm_family = preferred_family;
1290 req.r.rtm_table = 0;
1291 req.r.rtm_protocol = 0;
1292 req.r.rtm_scope = 0;
1293 req.r.rtm_type = 0;
1294 req.r.rtm_src_len = 0;
1295 req.r.rtm_dst_len = 0;
1296 req.r.rtm_tos = 0;
ae665a52 1297
aba5acdf
SH		 1298 while (argc > 0) {
1299 if (strcmp(*argv, "tos") == 0 ||
1300 matches(*argv, "dsfield") == 0) {
1301 __u32 tos;
1302 NEXT_ARG();
1303 if (rtnl_dsfield_a2n(&tos, *argv))
1304 invarg("TOS value is invalid\n", *argv);
1305 req.r.rtm_tos = tos;
1306 } else if (matches(*argv, "from") == 0) {
1307 inet_prefix addr;
1308 NEXT_ARG();
1309 if (matches(*argv, "help") == 0)
1310 usage();
1311 from_ok = 1;
1312 get_prefix(&addr, *argv, req.r.rtm_family);
1313 if (req.r.rtm_family == AF_UNSPEC)
1314 req.r.rtm_family = addr.family;
1315 if (addr.bytelen)
1316 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
1317 req.r.rtm_src_len = addr.bitlen;
1318 } else if (matches(*argv, "iif") == 0) {
1319 NEXT_ARG();
1320 idev = *argv;
1321 } else if (matches(*argv, "oif") == 0 ||
1322 strcmp(*argv, "dev") == 0) {
1323 NEXT_ARG();
1324 odev = *argv;
1325 } else if (matches(*argv, "notify") == 0) {
1326 req.r.rtm_flags |= RTM_F_NOTIFY;
1327 } else if (matches(*argv, "connected") == 0) {
1328 connected = 1;
1329 } else {
1330 inet_prefix addr;
1331 if (strcmp(*argv, "to") == 0) {
1332 NEXT_ARG();
1333 }
1334 if (matches(*argv, "help") == 0)
1335 usage();
1336 get_prefix(&addr, *argv, req.r.rtm_family);
1337 if (req.r.rtm_family == AF_UNSPEC)
1338 req.r.rtm_family = addr.family;
1339 if (addr.bytelen)
1340 addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
1341 req.r.rtm_dst_len = addr.bitlen;
1342 }
1343 argc--; argv++;
1344 }
1345
1346 if (req.r.rtm_dst_len == 0) {
1347 fprintf(stderr, "need at least destination address\n");
1348 exit(1);
1349 }
1350
aba5acdf
SH		 1351 ll_init_map(&rth);
1352
1353 if (idev || odev) {
1354 int idx;
1355
1356 if (idev) {
1357 if ((idx = ll_name_to_index(idev)) == 0) {
1358 fprintf(stderr, "Cannot find device \"%s\"\n", idev);
1359 return -1;
1360 }
1361 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
1362 }
1363 if (odev) {
1364 if ((idx = ll_name_to_index(odev)) == 0) {
1365 fprintf(stderr, "Cannot find device \"%s\"\n", odev);
1366 return -1;
1367 }
1368 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
1369 }
1370 }
1371
1372 if (req.r.rtm_family == AF_UNSPEC)
1373 req.r.rtm_family = AF_INET;
1374
1375 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
1376 exit(2);
1377
1378 if (connected && !from_ok) {
1379 struct rtmsg *r = NLMSG_DATA(&req.n);
1380 int len = req.n.nlmsg_len;
1381 struct rtattr * tb[RTA_MAX+1];
1382
1383 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1384 fprintf(stderr, "An error :-)\n");
1385 exit(1);
1386 }
1387
1388 if (req.n.nlmsg_type != RTM_NEWROUTE) {
1389 fprintf(stderr, "Not a route?\n");
1390 return -1;
1391 }
1392 len -= NLMSG_LENGTH(sizeof(*r));
1393 if (len < 0) {
1394 fprintf(stderr, "Wrong len %d\n", len);
1395 return -1;
1396 }
1397
aba5acdf
SH		 1398 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1399
1400 if (tb[RTA_PREFSRC]) {
1401 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
1402 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
1403 } else if (!tb[RTA_SRC]) {
1404 fprintf(stderr, "Failed to connect the route\n");
1405 return -1;
1406 }
1407 if (!odev && tb[RTA_OIF])
1408 tb[RTA_OIF]->rta_type = 0;
1409 if (tb[RTA_GATEWAY])
1410 tb[RTA_GATEWAY]->rta_type = 0;
1411 if (!idev && tb[RTA_IIF])
1412 tb[RTA_IIF]->rta_type = 0;
1413 req.n.nlmsg_flags = NLM_F_REQUEST;
1414 req.n.nlmsg_type = RTM_GETROUTE;
1415
1416 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
1417 exit(2);
1418 }
1419
1420 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1421 fprintf(stderr, "An error :-)\n");
1422 exit(1);
1423 }
1424
1425 exit(0);
1426}
1427
1428void iproute_reset_filter()
1429{
1430 memset(&filter, 0, sizeof(filter));
1431 filter.mdst.bitlen = -1;
1432 filter.msrc.bitlen = -1;
1433}
1434
1435int do_iproute(int argc, char **argv)
1436{
1437 if (argc < 1)
1438 return iproute_list_or_flush(0, NULL, 0);
ae665a52 1439
aba5acdf
SH		 1440 if (matches(*argv, "add") == 0)
1441 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
1442 argc-1, argv+1);
1443 if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
1444 return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
1445 argc-1, argv+1);
1446 if (matches(*argv, "replace") == 0)
1447 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
1448 argc-1, argv+1);
1449 if (matches(*argv, "prepend") == 0)
1450 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
1451 argc-1, argv+1);
1452 if (matches(*argv, "append") == 0)
1453 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
1454 argc-1, argv+1);
1455 if (matches(*argv, "test") == 0)
1456 return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
1457 argc-1, argv+1);
1458 if (matches(*argv, "delete") == 0)
1459 return iproute_modify(RTM_DELROUTE, 0,
1460 argc-1, argv+1);
1461 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1462 || matches(*argv, "lst") == 0)
1463 return iproute_list_or_flush(argc-1, argv+1, 0);
1464 if (matches(*argv, "get") == 0)
1465 return iproute_get(argc-1, argv+1);
1466 if (matches(*argv, "flush") == 0)
1467 return iproute_list_or_flush(argc-1, argv+1, 1);
1468 if (matches(*argv, "help") == 0)
1469 usage();
1470 fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
1471 exit(-1);
1472}
1473
Upstream mirror of iproute2