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Add initrwnd to iproute2
[mirror_iproute2.git] / ip / iproute.c
CommitLineData
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",
f5fd8003 49 [RTAX_INITRWND] = "initrwnd",
f38c7334 50};
aba5acdf
SH		 51static void usage(void) __attribute__((noreturn));
52
53static void usage(void)
54{
55 fprintf(stderr, "Usage: ip route { list | flush } SELECTOR\n");
56 fprintf(stderr, " ip route get ADDRESS [ from ADDRESS iif STRING ]\n");
57 fprintf(stderr, " [ oif STRING ] [ tos TOS ]\n");
58 fprintf(stderr, " ip route { add | del | change | append | replace | monitor } ROUTE\n");
59 fprintf(stderr, "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n");
60 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
61 fprintf(stderr, " [ type TYPE ] [ scope SCOPE ]\n");
62 fprintf(stderr, "ROUTE := NODE_SPEC [ INFO_SPEC ]\n");
63 fprintf(stderr, "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n");
64 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
65 fprintf(stderr, " [ scope SCOPE ] [ metric METRIC ]\n");
66 fprintf(stderr, "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n");
67 fprintf(stderr, "NH := [ via ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS\n");
68 fprintf(stderr, "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ]\n");
71e58151 69 fprintf(stderr, " [ rtt TIME ] [ rttvar TIME ] [reordering NUMBER ]\n");
a1f1143e 70 fprintf(stderr, " [ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n");
576c63ee 71 fprintf(stderr, " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n");
f5fd8003 72 fprintf(stderr, " [ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]\n");
aba5acdf
SH		 73 fprintf(stderr, "TYPE := [ unicast | local | broadcast | multicast | throw |\n");
74 fprintf(stderr, " unreachable | prohibit | blackhole | nat ]\n");
75 fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n");
76 fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n");
02d2ae55 77 fprintf(stderr, "MP_ALGO := { rr | drr | random | wrandom }\n");
aba5acdf
SH		 78 fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n");
79 fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n");
54e0b2e7 80 fprintf(stderr, "TIME := NUMBER[s|ms|us|ns|j]\n");
aba5acdf
SH		 81 exit(-1);
82}
83
84
85static struct
86{
87 int tb;
bd4bcdad 88 int cloned;
aba5acdf
SH		 89 int flushed;
90 char *flushb;
91 int flushp;
92 int flushe;
aba5acdf
SH		 93 int protocol, protocolmask;
94 int scope, scopemask;
95 int type, typemask;
96 int tos, tosmask;
97 int iif, iifmask;
98 int oif, oifmask;
99 int realm, realmmask;
100 inet_prefix rprefsrc;
101 inet_prefix rvia;
102 inet_prefix rdst;
103 inet_prefix mdst;
104 inet_prefix rsrc;
105 inet_prefix msrc;
106} filter;
107
108static int flush_update(void)
109{
f31a37f7 110 if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
1fb0a998 111 perror("Failed to send flush request");
aba5acdf
SH		 112 return -1;
113 }
114 filter.flushp = 0;
115 return 0;
116}
117
50772dc5 118int print_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
aba5acdf
SH		 119{
120 FILE *fp = (FILE*)arg;
121 struct rtmsg *r = NLMSG_DATA(n);
122 int len = n->nlmsg_len;
123 struct rtattr * tb[RTA_MAX+1];
124 char abuf[256];
125 inet_prefix dst;
126 inet_prefix src;
127 inet_prefix prefsrc;
128 inet_prefix via;
129 int host_len = -1;
e0b29fe7 130 static int ip6_multiple_tables;
34e95647 131 __u32 table;
aba5acdf 132 SPRINT_BUF(b1);
6a79240b 133 static int hz;
aba5acdf
SH		 134
135 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
136 fprintf(stderr, "Not a route: %08x %08x %08x\n",
137 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
138 return 0;
139 }
140 if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
141 return 0;
142 len -= NLMSG_LENGTH(sizeof(*r));
143 if (len < 0) {
144 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
145 return -1;
146 }
147
148 if (r->rtm_family == AF_INET6)
149 host_len = 128;
150 else if (r->rtm_family == AF_INET)
151 host_len = 32;
152 else if (r->rtm_family == AF_DECnet)
153 host_len = 16;
154 else if (r->rtm_family == AF_IPX)
155 host_len = 80;
156
34e95647
PM		 157 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
158 table = rtm_get_table(r, tb);
159
160 if (r->rtm_family == AF_INET6 && table != RT_TABLE_MAIN)
e0b29fe7
PM		 161 ip6_multiple_tables = 1;
162
163 if (r->rtm_family == AF_INET6 && !ip6_multiple_tables) {
bd4bcdad
PM		 164 if (filter.cloned) {
165 if (!(r->rtm_flags&RTM_F_CLONED))
166 return 0;
167 }
aba5acdf 168 if (filter.tb) {
9ab4c85b 169 if (!filter.cloned && r->rtm_flags&RTM_F_CLONED)
bd4bcdad
PM		 170 return 0;
171 if (filter.tb == RT_TABLE_LOCAL) {
172 if (r->rtm_type != RTN_LOCAL)
aba5acdf 173 return 0;
bd4bcdad
PM		 174 } else if (filter.tb == RT_TABLE_MAIN) {
175 if (r->rtm_type == RTN_LOCAL)
aba5acdf 176 return 0;
bd4bcdad
PM		 177 } else {
178 return 0;
aba5acdf
SH		 179 }
180 }
181 } else {
9ab4c85b
SS		 182 if (filter.cloned) {
183 if (!(r->rtm_flags&RTM_F_CLONED))
184 return 0;
185 }
34e95647 186 if (filter.tb > 0 && filter.tb != table)
aba5acdf
SH		 187 return 0;
188 }
189 if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
190 return 0;
191 if ((filter.scope^r->rtm_scope)&filter.scopemask)
192 return 0;
193 if ((filter.type^r->rtm_type)&filter.typemask)
194 return 0;
195 if ((filter.tos^r->rtm_tos)&filter.tosmask)
196 return 0;
197 if (filter.rdst.family &&
198 (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len))
199 return 0;
200 if (filter.mdst.family &&
201 (r->rtm_family != filter.mdst.family ||
202 (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len)))
203 return 0;
204 if (filter.rsrc.family &&
205 (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len))
206 return 0;
207 if (filter.msrc.family &&
208 (r->rtm_family != filter.msrc.family ||
209 (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len)))
210 return 0;
211 if (filter.rvia.family && r->rtm_family != filter.rvia.family)
212 return 0;
213 if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
214 return 0;
215
aba5acdf
SH		 216 memset(&dst, 0, sizeof(dst));
217 dst.family = r->rtm_family;
218 if (tb[RTA_DST])
219 memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
220 if (filter.rsrc.family || filter.msrc.family) {
221 memset(&src, 0, sizeof(src));
222 src.family = r->rtm_family;
223 if (tb[RTA_SRC])
224 memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
225 }
226 if (filter.rvia.bitlen>0) {
227 memset(&via, 0, sizeof(via));
228 via.family = r->rtm_family;
229 if (tb[RTA_GATEWAY])
7849fb55 230 memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len/8);
aba5acdf
SH		 231 }
232 if (filter.rprefsrc.bitlen>0) {
233 memset(&prefsrc, 0, sizeof(prefsrc));
234 prefsrc.family = r->rtm_family;
235 if (tb[RTA_PREFSRC])
7849fb55 236 memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len/8);
aba5acdf
SH		 237 }
238
239 if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
240 return 0;
241 if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
242 inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
243 return 0;
244
245 if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
246 return 0;
247 if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
248 inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
249 return 0;
250
251 if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
252 return 0;
253 if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
254 return 0;
255 if (filter.realmmask) {
256 __u32 realms = 0;
257 if (tb[RTA_FLOW])
258 realms = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
259 if ((realms^filter.realm)&filter.realmmask)
260 return 0;
261 }
262 if (filter.iifmask) {
263 int iif = 0;
264 if (tb[RTA_IIF])
265 iif = *(int*)RTA_DATA(tb[RTA_IIF]);
266 if ((iif^filter.iif)&filter.iifmask)
267 return 0;
268 }
269 if (filter.oifmask) {
270 int oif = 0;
271 if (tb[RTA_OIF])
272 oif = *(int*)RTA_DATA(tb[RTA_OIF]);
273 if ((oif^filter.oif)&filter.oifmask)
274 return 0;
275 }
ae665a52 276 if (filter.flushb &&
aba5acdf
SH		 277 r->rtm_family == AF_INET6 &&
278 r->rtm_dst_len == 0 &&
279 r->rtm_type == RTN_UNREACHABLE &&
280 tb[RTA_PRIORITY] &&
281 *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
282 return 0;
283
284 if (filter.flushb) {
285 struct nlmsghdr *fn;
286 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
287 if (flush_update())
288 return -1;
289 }
290 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
291 memcpy(fn, n, n->nlmsg_len);
292 fn->nlmsg_type = RTM_DELROUTE;
293 fn->nlmsg_flags = NLM_F_REQUEST;
351efcde 294 fn->nlmsg_seq = ++rth.seq;
aba5acdf
SH		 295 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
296 filter.flushed++;
297 if (show_stats < 2)
298 return 0;
299 }
300
301 if (n->nlmsg_type == RTM_DELROUTE)
302 fprintf(fp, "Deleted ");
303 if (r->rtm_type != RTN_UNICAST && !filter.type)
304 fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
305
306 if (tb[RTA_DST]) {
307 if (r->rtm_dst_len != host_len) {
308 fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family,
309 RTA_PAYLOAD(tb[RTA_DST]),
310 RTA_DATA(tb[RTA_DST]),
311 abuf, sizeof(abuf)),
312 r->rtm_dst_len
313 );
314 } else {
315 fprintf(fp, "%s ", format_host(r->rtm_family,
316 RTA_PAYLOAD(tb[RTA_DST]),
317 RTA_DATA(tb[RTA_DST]),
318 abuf, sizeof(abuf))
319 );
320 }
321 } else if (r->rtm_dst_len) {
322 fprintf(fp, "0/%d ", r->rtm_dst_len);
323 } else {
324 fprintf(fp, "default ");
325 }
326 if (tb[RTA_SRC]) {
327 if (r->rtm_src_len != host_len) {
328 fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family,
329 RTA_PAYLOAD(tb[RTA_SRC]),
330 RTA_DATA(tb[RTA_SRC]),
331 abuf, sizeof(abuf)),
332 r->rtm_src_len
333 );
334 } else {
335 fprintf(fp, "from %s ", format_host(r->rtm_family,
336 RTA_PAYLOAD(tb[RTA_SRC]),
337 RTA_DATA(tb[RTA_SRC]),
338 abuf, sizeof(abuf))
339 );
340 }
341 } else if (r->rtm_src_len) {
342 fprintf(fp, "from 0/%u ", r->rtm_src_len);
343 }
344 if (r->rtm_tos && filter.tosmask != -1) {
345 SPRINT_BUF(b1);
346 fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
347 }
02d2ae55 348
aba5acdf 349 if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
ae665a52 350 fprintf(fp, "via %s ",
aba5acdf
SH		 351 format_host(r->rtm_family,
352 RTA_PAYLOAD(tb[RTA_GATEWAY]),
353 RTA_DATA(tb[RTA_GATEWAY]),
354 abuf, sizeof(abuf)));
355 }
356 if (tb[RTA_OIF] && filter.oifmask != -1)
357 fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
358
359 if (!(r->rtm_flags&RTM_F_CLONED)) {
34e95647
PM		 360 if (table != RT_TABLE_MAIN && !filter.tb)
361 fprintf(fp, " table %s ", rtnl_rttable_n2a(table, b1, sizeof(b1)));
aba5acdf
SH		 362 if (r->rtm_protocol != RTPROT_BOOT && filter.protocolmask != -1)
363 fprintf(fp, " proto %s ", rtnl_rtprot_n2a(r->rtm_protocol, b1, sizeof(b1)));
364 if (r->rtm_scope != RT_SCOPE_UNIVERSE && filter.scopemask != -1)
365 fprintf(fp, " scope %s ", rtnl_rtscope_n2a(r->rtm_scope, b1, sizeof(b1)));
366 }
367 if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
368 /* Do not use format_host(). It is our local addr
369 and symbolic name will not be useful.
370 */
ae665a52 371 fprintf(fp, " src %s ",
aba5acdf
SH		 372 rt_addr_n2a(r->rtm_family,
373 RTA_PAYLOAD(tb[RTA_PREFSRC]),
374 RTA_DATA(tb[RTA_PREFSRC]),
375 abuf, sizeof(abuf)));
376 }
377 if (tb[RTA_PRIORITY])
378 fprintf(fp, " metric %d ", *(__u32*)RTA_DATA(tb[RTA_PRIORITY]));
379 if (r->rtm_flags & RTNH_F_DEAD)
380 fprintf(fp, "dead ");
381 if (r->rtm_flags & RTNH_F_ONLINK)
382 fprintf(fp, "onlink ");
383 if (r->rtm_flags & RTNH_F_PERVASIVE)
384 fprintf(fp, "pervasive ");
aba5acdf
SH		 385 if (r->rtm_flags & RTM_F_NOTIFY)
386 fprintf(fp, "notify ");
387
388 if (tb[RTA_FLOW] && filter.realmmask != ~0U) {
389 __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
390 __u32 from = to>>16;
391 to &= 0xFFFF;
392 fprintf(fp, "realm%s ", from ? "s" : "");
393 if (from) {
394 fprintf(fp, "%s/",
395 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
396 }
397 fprintf(fp, "%s ",
398 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
399 }
400 if ((r->rtm_flags&RTM_F_CLONED) && r->rtm_family == AF_INET) {
401 __u32 flags = r->rtm_flags&~0xFFFF;
402 int first = 1;
403
404 fprintf(fp, "%s cache ", _SL_);
405
406#define PRTFL(fl,flname) if (flags&RTCF_##fl) { \
407 flags &= ~RTCF_##fl; \
408 fprintf(fp, "%s" flname "%s", first ? "<" : "", flags ? "," : "> "); \
409 first = 0; }
410 PRTFL(LOCAL, "local");
411 PRTFL(REJECT, "reject");
412 PRTFL(MULTICAST, "mc");
413 PRTFL(BROADCAST, "brd");
414 PRTFL(DNAT, "dst-nat");
415 PRTFL(SNAT, "src-nat");
416 PRTFL(MASQ, "masq");
417 PRTFL(DIRECTDST, "dst-direct");
418 PRTFL(DIRECTSRC, "src-direct");
419 PRTFL(REDIRECTED, "redirected");
420 PRTFL(DOREDIRECT, "redirect");
421 PRTFL(FAST, "fastroute");
422 PRTFL(NOTIFY, "notify");
423 PRTFL(TPROXY, "proxy");
63a0f20a 424
aba5acdf
SH		 425 if (flags)
426 fprintf(fp, "%s%x> ", first ? "<" : "", flags);
427 if (tb[RTA_CACHEINFO]) {
428 struct rta_cacheinfo *ci = RTA_DATA(tb[RTA_CACHEINFO]);
aba5acdf 429 if (!hz)
5e8bc631 430 hz = get_user_hz();
aba5acdf
SH		 431 if (ci->rta_expires != 0)
432 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
433 if (ci->rta_error != 0)
434 fprintf(fp, " error %d", ci->rta_error);
435 if (show_stats) {
436 if (ci->rta_clntref)
437 fprintf(fp, " users %d", ci->rta_clntref);
438 if (ci->rta_used != 0)
439 fprintf(fp, " used %d", ci->rta_used);
440 if (ci->rta_lastuse != 0)
441 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
442 }
443#ifdef RTNETLINK_HAVE_PEERINFO
444 if (ci->rta_id)
445 fprintf(fp, " ipid 0x%04x", ci->rta_id);
446 if (ci->rta_ts || ci->rta_tsage)
447 fprintf(fp, " ts 0x%x tsage %dsec", ci->rta_ts, ci->rta_tsage);
448#endif
449 }
450 } else if (r->rtm_family == AF_INET6) {
451 struct rta_cacheinfo *ci = NULL;
452 if (tb[RTA_CACHEINFO])
453 ci = RTA_DATA(tb[RTA_CACHEINFO]);
454 if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
aba5acdf 455 if (!hz)
5e8bc631 456 hz = get_user_hz();
aba5acdf
SH		 457 if (r->rtm_flags & RTM_F_CLONED)
458 fprintf(fp, "%s cache ", _SL_);
459 if (ci->rta_expires)
460 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
461 if (ci->rta_error != 0)
462 fprintf(fp, " error %d", ci->rta_error);
463 if (show_stats) {
464 if (ci->rta_clntref)
465 fprintf(fp, " users %d", ci->rta_clntref);
466 if (ci->rta_used != 0)
467 fprintf(fp, " used %d", ci->rta_used);
468 if (ci->rta_lastuse != 0)
469 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
470 }
471 } else if (ci) {
472 if (ci->rta_error != 0)
473 fprintf(fp, " error %d", ci->rta_error);
474 }
475 }
476 if (tb[RTA_METRICS]) {
477 int i;
478 unsigned mxlock = 0;
479 struct rtattr *mxrta[RTAX_MAX+1];
480
aba5acdf
SH		 481 parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(tb[RTA_METRICS]),
482 RTA_PAYLOAD(tb[RTA_METRICS]));
483 if (mxrta[RTAX_LOCK])
484 mxlock = *(unsigned*)RTA_DATA(mxrta[RTAX_LOCK]);
485
f38c7334 486 for (i=2; i<= RTAX_MAX; i++) {
ced61d7d
SH		 487 unsigned val;
488
aba5acdf
SH		 489 if (mxrta[i] == NULL)
490 continue;
491 if (!hz)
492 hz = get_hz();
6a79240b
SH		 493
494 if (i < sizeof(mx_names)/sizeof(char*) && mx_names[i])
495 fprintf(fp, " %s", mx_names[i]);
aba5acdf 496 else
5e8bc631 497 fprintf(fp, " metric %d", i);
aba5acdf
SH		 498 if (mxlock & (1<<i))
499 fprintf(fp, " lock");
500
ced61d7d
SH		 501 val = *(unsigned*)RTA_DATA(mxrta[i]);
502 switch (i) {
503 case RTAX_HOPLIMIT:
504 if ((long)val == -1)
505 val = 0;
506 /* fall through */
507 default:
508 fprintf(fp, " %u", val);
509 break;
aba5acdf 510
ced61d7d
SH		 511 case RTAX_RTT:
512 case RTAX_RTTVAR:
513 case RTAX_RTO_MIN:
aba5acdf
SH		 514 val *= 1000;
515 if (i == RTAX_RTT)
516 val /= 8;
54e0b2e7 517 else if (i == RTAX_RTTVAR)
aba5acdf 518 val /= 4;
ced61d7d 519
aba5acdf 520 if (val >= hz)
ced61d7d
SH		 521 fprintf(fp, " %llums",
522 (unsigned long long) val / hz);
aba5acdf 523 else
ced61d7d
SH		 524 fprintf(fp, " %.2fms",
525 (double)val / hz);
aba5acdf
SH		 526 }
527 }
528 }
529 if (tb[RTA_IIF] && filter.iifmask != -1) {
530 fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
531 }
532 if (tb[RTA_MULTIPATH]) {
533 struct rtnexthop *nh = RTA_DATA(tb[RTA_MULTIPATH]);
534 int first = 0;
535
536 len = RTA_PAYLOAD(tb[RTA_MULTIPATH]);
537
538 for (;;) {
539 if (len < sizeof(*nh))
540 break;
541 if (nh->rtnh_len > len)
542 break;
543 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
544 if (first)
545 fprintf(fp, " Oifs:");
546 else
547 fprintf(fp, " ");
548 } else
549 fprintf(fp, "%s\tnexthop", _SL_);
550 if (nh->rtnh_len > sizeof(*nh)) {
aba5acdf
SH		 551 parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh), nh->rtnh_len - sizeof(*nh));
552 if (tb[RTA_GATEWAY]) {
ae665a52 553 fprintf(fp, " via %s ",
aba5acdf
SH		 554 format_host(r->rtm_family,
555 RTA_PAYLOAD(tb[RTA_GATEWAY]),
556 RTA_DATA(tb[RTA_GATEWAY]),
557 abuf, sizeof(abuf)));
558 }
f4f6d640
PM		 559 if (tb[RTA_FLOW]) {
560 __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
561 __u32 from = to>>16;
562 to &= 0xFFFF;
563 fprintf(fp, " realm%s ", from ? "s" : "");
564 if (from) {
565 fprintf(fp, "%s/",
566 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
567 }
568 fprintf(fp, "%s",
569 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
570 }
aba5acdf
SH		 571 }
572 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
573 fprintf(fp, " %s", ll_index_to_name(nh->rtnh_ifindex));
574 if (nh->rtnh_hops != 1)
575 fprintf(fp, "(ttl>%d)", nh->rtnh_hops);
576 } else {
577 fprintf(fp, " dev %s", ll_index_to_name(nh->rtnh_ifindex));
578 fprintf(fp, " weight %d", nh->rtnh_hops+1);
579 }
580 if (nh->rtnh_flags & RTNH_F_DEAD)
581 fprintf(fp, " dead");
582 if (nh->rtnh_flags & RTNH_F_ONLINK)
583 fprintf(fp, " onlink");
584 if (nh->rtnh_flags & RTNH_F_PERVASIVE)
585 fprintf(fp, " pervasive");
586 len -= NLMSG_ALIGN(nh->rtnh_len);
587 nh = RTNH_NEXT(nh);
588 }
589 }
590 fprintf(fp, "\n");
591 fflush(fp);
592 return 0;
593}
594
595
596int parse_one_nh(struct rtattr *rta, struct rtnexthop *rtnh, int *argcp, char ***argvp)
597{
598 int argc = *argcp;
599 char **argv = *argvp;
600
601 while (++argv, --argc > 0) {
602 if (strcmp(*argv, "via") == 0) {
603 NEXT_ARG();
604 rta_addattr32(rta, 4096, RTA_GATEWAY, get_addr32(*argv));
605 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
606 } else if (strcmp(*argv, "dev") == 0) {
607 NEXT_ARG();
608 if ((rtnh->rtnh_ifindex = ll_name_to_index(*argv)) == 0) {
609 fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
610 exit(1);
611 }
612 } else if (strcmp(*argv, "weight") == 0) {
613 unsigned w;
614 NEXT_ARG();
615 if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
616 invarg("\"weight\" is invalid\n", *argv);
617 rtnh->rtnh_hops = w - 1;
618 } else if (strcmp(*argv, "onlink") == 0) {
619 rtnh->rtnh_flags |= RTNH_F_ONLINK;
f4f6d640
PM		 620 } else if (matches(*argv, "realms") == 0) {
621 __u32 realm;
622 NEXT_ARG();
623 if (get_rt_realms(&realm, *argv))
624 invarg("\"realm\" value is invalid\n", *argv);
625 rta_addattr32(rta, 4096, RTA_FLOW, realm);
626 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
aba5acdf
SH		 627 } else
628 break;
629 }
630 *argcp = argc;
631 *argvp = argv;
632 return 0;
633}
634
635int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r, int argc, char **argv)
636{
637 char buf[1024];
638 struct rtattr *rta = (void*)buf;
639 struct rtnexthop *rtnh;
640
641 rta->rta_type = RTA_MULTIPATH;
642 rta->rta_len = RTA_LENGTH(0);
643 rtnh = RTA_DATA(rta);
644
645 while (argc > 0) {
646 if (strcmp(*argv, "nexthop") != 0) {
647 fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
648 exit(-1);
649 }
650 if (argc <= 1) {
651 fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
652 exit(-1);
653 }
654 memset(rtnh, 0, sizeof(*rtnh));
655 rtnh->rtnh_len = sizeof(*rtnh);
656 rta->rta_len += rtnh->rtnh_len;
657 parse_one_nh(rta, rtnh, &argc, &argv);
658 rtnh = RTNH_NEXT(rtnh);
659 }
660
661 if (rta->rta_len > RTA_LENGTH(0))
662 addattr_l(n, 1024, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta));
663 return 0;
664}
665
666
667int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
668{
aba5acdf
SH		 669 struct {
670 struct nlmsghdr n;
671 struct rtmsg r;
672 char buf[1024];
673 } req;
674 char mxbuf[256];
675 struct rtattr * mxrta = (void*)mxbuf;
676 unsigned mxlock = 0;
677 char *d = NULL;
678 int gw_ok = 0;
679 int dst_ok = 0;
680 int nhs_ok = 0;
681 int scope_ok = 0;
682 int table_ok = 0;
683 int proto_ok = 0;
684 int type_ok = 0;
54e0b2e7 685 int raw = 0;
aba5acdf
SH		 686
687 memset(&req, 0, sizeof(req));
688
689 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
690 req.n.nlmsg_flags = NLM_F_REQUEST|flags;
691 req.n.nlmsg_type = cmd;
692 req.r.rtm_family = preferred_family;
693 req.r.rtm_table = RT_TABLE_MAIN;
694 req.r.rtm_scope = RT_SCOPE_NOWHERE;
695
696 if (cmd != RTM_DELROUTE) {
697 req.r.rtm_protocol = RTPROT_BOOT;
698 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
699 req.r.rtm_type = RTN_UNICAST;
700 }
701
702 mxrta->rta_type = RTA_METRICS;
703 mxrta->rta_len = RTA_LENGTH(0);
704
705 while (argc > 0) {
706 if (strcmp(*argv, "src") == 0) {
707 inet_prefix addr;
708 NEXT_ARG();
709 get_addr(&addr, *argv, req.r.rtm_family);
710 if (req.r.rtm_family == AF_UNSPEC)
711 req.r.rtm_family = addr.family;
712 addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
713 } else if (strcmp(*argv, "via") == 0) {
714 inet_prefix addr;
715 gw_ok = 1;
716 NEXT_ARG();
717 get_addr(&addr, *argv, req.r.rtm_family);
718 if (req.r.rtm_family == AF_UNSPEC)
719 req.r.rtm_family = addr.family;
720 addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
721 } else if (strcmp(*argv, "from") == 0) {
722 inet_prefix addr;
723 NEXT_ARG();
724 get_prefix(&addr, *argv, req.r.rtm_family);
725 if (req.r.rtm_family == AF_UNSPEC)
726 req.r.rtm_family = addr.family;
727 if (addr.bytelen)
728 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
729 req.r.rtm_src_len = addr.bitlen;
730 } else if (strcmp(*argv, "tos") == 0 ||
731 matches(*argv, "dsfield") == 0) {
732 __u32 tos;
733 NEXT_ARG();
734 if (rtnl_dsfield_a2n(&tos, *argv))
735 invarg("\"tos\" value is invalid\n", *argv);
736 req.r.rtm_tos = tos;
737 } else if (matches(*argv, "metric") == 0 ||
738 matches(*argv, "priority") == 0 ||
739 matches(*argv, "preference") == 0) {
740 __u32 metric;
741 NEXT_ARG();
742 if (get_u32(&metric, *argv, 0))
743 invarg("\"metric\" value is invalid\n", *argv);
744 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
745 } else if (strcmp(*argv, "scope") == 0) {
f332d169 746 __u32 scope = 0;
aba5acdf
SH		 747 NEXT_ARG();
748 if (rtnl_rtscope_a2n(&scope, *argv))
749 invarg("invalid \"scope\" value\n", *argv);
750 req.r.rtm_scope = scope;
751 scope_ok = 1;
752 } else if (strcmp(*argv, "mtu") == 0) {
753 unsigned mtu;
754 NEXT_ARG();
755 if (strcmp(*argv, "lock") == 0) {
756 mxlock |= (1<<RTAX_MTU);
757 NEXT_ARG();
758 }
759 if (get_unsigned(&mtu, *argv, 0))
760 invarg("\"mtu\" value is invalid\n", *argv);
761 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
71e58151
GBY		 762#ifdef RTAX_HOPLIMIT
763 } else if (strcmp(*argv, "hoplimit") == 0) {
764 unsigned hoplimit;
765 NEXT_ARG();
766 if (strcmp(*argv, "lock") == 0) {
767 mxlock |= (1<<RTAX_HOPLIMIT);
768 NEXT_ARG();
769 }
770 if (get_unsigned(&hoplimit, *argv, 0))
771 invarg("\"hoplimit\" value is invalid\n", *argv);
772 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit);
773#endif
aba5acdf
SH		 774#ifdef RTAX_ADVMSS
775 } else if (strcmp(*argv, "advmss") == 0) {
776 unsigned mss;
777 NEXT_ARG();
778 if (strcmp(*argv, "lock") == 0) {
779 mxlock |= (1<<RTAX_ADVMSS);
780 NEXT_ARG();
781 }
782 if (get_unsigned(&mss, *argv, 0))
783 invarg("\"mss\" value is invalid\n", *argv);
784 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
785#endif
786#ifdef RTAX_REORDERING
787 } else if (matches(*argv, "reordering") == 0) {
788 unsigned reord;
789 NEXT_ARG();
790 if (strcmp(*argv, "lock") == 0) {
791 mxlock |= (1<<RTAX_REORDERING);
792 NEXT_ARG();
793 }
794 if (get_unsigned(&reord, *argv, 0))
795 invarg("\"reordering\" value is invalid\n", *argv);
796 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
797#endif
798 } else if (strcmp(*argv, "rtt") == 0) {
799 unsigned rtt;
800 NEXT_ARG();
801 if (strcmp(*argv, "lock") == 0) {
802 mxlock |= (1<<RTAX_RTT);
803 NEXT_ARG();
804 }
54e0b2e7 805 if (get_jiffies(&rtt, *argv, 0, &raw))
aba5acdf 806 invarg("\"rtt\" value is invalid\n", *argv);
54e0b2e7
RJ		 807 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT,
808 (raw) ? rtt : rtt * 8);
809 } else if (strcmp(*argv, "rto_min") == 0) {
810 unsigned rto_min;
811 NEXT_ARG();
812 mxlock |= (1<<RTAX_RTO_MIN);
813 if (get_jiffies(&rto_min, *argv, 0, &raw))
814 invarg("\"rto_min\" value is invalid\n",
815 *argv);
816 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN,
817 rto_min);
aba5acdf
SH		 818 } else if (matches(*argv, "window") == 0) {
819 unsigned win;
820 NEXT_ARG();
821 if (strcmp(*argv, "lock") == 0) {
822 mxlock |= (1<<RTAX_WINDOW);
823 NEXT_ARG();
824 }
825 if (get_unsigned(&win, *argv, 0))
826 invarg("\"window\" value is invalid\n", *argv);
827 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
828 } else if (matches(*argv, "cwnd") == 0) {
829 unsigned win;
830 NEXT_ARG();
831 if (strcmp(*argv, "lock") == 0) {
832 mxlock |= (1<<RTAX_CWND);
833 NEXT_ARG();
834 }
835 if (get_unsigned(&win, *argv, 0))
836 invarg("\"cwnd\" value is invalid\n", *argv);
837 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
a1f1143e
VW		 838 } else if (matches(*argv, "initcwnd") == 0) {
839 unsigned win;
840 NEXT_ARG();
841 if (strcmp(*argv, "lock") == 0) {
842 mxlock |= (1<<RTAX_INITCWND);
843 NEXT_ARG();
844 }
845 if (get_unsigned(&win, *argv, 0))
846 invarg("\"initcwnd\" value is invalid\n", *argv);
847 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITCWND, win);
f5fd8003 848 } else if (matches(*argv, "initrwnd") == 0) {
849 unsigned win;
850 NEXT_ARG();
851 if (strcmp(*argv, "lock") == 0) {
852 mxlock |= (1<<RTAX_INITRWND);
853 NEXT_ARG();
854 }
855 if (get_unsigned(&win, *argv, 0))
856 invarg("\"initrwnd\" value is invalid\n", *argv);
857 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITRWND, win);
aba5acdf
SH		 858 } else if (matches(*argv, "rttvar") == 0) {
859 unsigned win;
860 NEXT_ARG();
861 if (strcmp(*argv, "lock") == 0) {
862 mxlock |= (1<<RTAX_RTTVAR);
863 NEXT_ARG();
864 }
54e0b2e7 865 if (get_jiffies(&win, *argv, 0, &raw))
aba5acdf 866 invarg("\"rttvar\" value is invalid\n", *argv);
54e0b2e7
RJ		 867 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR,
868 (raw) ? win : win * 4);
aba5acdf
SH		 869 } else if (matches(*argv, "ssthresh") == 0) {
870 unsigned win;
871 NEXT_ARG();
872 if (strcmp(*argv, "lock") == 0) {
873 mxlock |= (1<<RTAX_SSTHRESH);
874 NEXT_ARG();
875 }
876 if (get_unsigned(&win, *argv, 0))
877 invarg("\"ssthresh\" value is invalid\n", *argv);
878 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
879 } else if (matches(*argv, "realms") == 0) {
880 __u32 realm;
881 NEXT_ARG();
882 if (get_rt_realms(&realm, *argv))
883 invarg("\"realm\" value is invalid\n", *argv);
884 addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
885 } else if (strcmp(*argv, "onlink") == 0) {
886 req.r.rtm_flags |= RTNH_F_ONLINK;
aba5acdf
SH		 887 } else if (strcmp(*argv, "nexthop") == 0) {
888 nhs_ok = 1;
889 break;
890 } else if (matches(*argv, "protocol") == 0) {
f332d169 891 __u32 prot;
aba5acdf
SH		 892 NEXT_ARG();
893 if (rtnl_rtprot_a2n(&prot, *argv))
894 invarg("\"protocol\" value is invalid\n", *argv);
895 req.r.rtm_protocol = prot;
896 proto_ok =1;
897 } else if (matches(*argv, "table") == 0) {
f332d169 898 __u32 tid;
aba5acdf
SH		 899 NEXT_ARG();
900 if (rtnl_rttable_a2n(&tid, *argv))
901 invarg("\"table\" value is invalid\n", *argv);
34e95647
PM		 902 if (tid < 256)
903 req.r.rtm_table = tid;
904 else {
905 req.r.rtm_table = RT_TABLE_UNSPEC;
906 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
907 }
aba5acdf
SH		 908 table_ok = 1;
909 } else if (strcmp(*argv, "dev") == 0 ||
910 strcmp(*argv, "oif") == 0) {
911 NEXT_ARG();
912 d = *argv;
913 } else {
914 int type;
915 inet_prefix dst;
916
917 if (strcmp(*argv, "to") == 0) {
918 NEXT_ARG();
919 }
920 if ((**argv < '0' || **argv > '9') &&
921 rtnl_rtntype_a2n(&type, *argv) == 0) {
922 NEXT_ARG();
923 req.r.rtm_type = type;
924 type_ok = 1;
925 }
926
927 if (matches(*argv, "help") == 0)
928 usage();
929 if (dst_ok)
930 duparg2("to", *argv);
931 get_prefix(&dst, *argv, req.r.rtm_family);
932 if (req.r.rtm_family == AF_UNSPEC)
933 req.r.rtm_family = dst.family;
934 req.r.rtm_dst_len = dst.bitlen;
935 dst_ok = 1;
936 if (dst.bytelen)
937 addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
938 }
939 argc--; argv++;
940 }
941
aba5acdf
SH		 942 if (d || nhs_ok) {
943 int idx;
944
945 ll_init_map(&rth);
946
947 if (d) {
948 if ((idx = ll_name_to_index(d)) == 0) {
949 fprintf(stderr, "Cannot find device \"%s\"\n", d);
950 return -1;
951 }
952 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
953 }
954 }
955
956 if (mxrta->rta_len > RTA_LENGTH(0)) {
957 if (mxlock)
958 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
959 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
960 }
961
962 if (nhs_ok)
963 parse_nexthops(&req.n, &req.r, argc, argv);
964
965 if (!table_ok) {
966 if (req.r.rtm_type == RTN_LOCAL ||
967 req.r.rtm_type == RTN_BROADCAST ||
968 req.r.rtm_type == RTN_NAT ||
969 req.r.rtm_type == RTN_ANYCAST)
970 req.r.rtm_table = RT_TABLE_LOCAL;
971 }
972 if (!scope_ok) {
973 if (req.r.rtm_type == RTN_LOCAL ||
974 req.r.rtm_type == RTN_NAT)
975 req.r.rtm_scope = RT_SCOPE_HOST;
976 else if (req.r.rtm_type == RTN_BROADCAST ||
977 req.r.rtm_type == RTN_MULTICAST ||
978 req.r.rtm_type == RTN_ANYCAST)
979 req.r.rtm_scope = RT_SCOPE_LINK;
980 else if (req.r.rtm_type == RTN_UNICAST ||
981 req.r.rtm_type == RTN_UNSPEC) {
982 if (cmd == RTM_DELROUTE)
983 req.r.rtm_scope = RT_SCOPE_NOWHERE;
984 else if (!gw_ok && !nhs_ok)
985 req.r.rtm_scope = RT_SCOPE_LINK;
986 }
987 }
988
989 if (req.r.rtm_family == AF_UNSPEC)
990 req.r.rtm_family = AF_INET;
991
992 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
993 exit(2);
994
995 return 0;
996}
997
998static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
999{
1000 struct {
1001 struct nlmsghdr nlh;
1002 struct rtmsg rtm;
1003 } req;
1004 struct sockaddr_nl nladdr;
1005
1006 memset(&nladdr, 0, sizeof(nladdr));
1007 memset(&req, 0, sizeof(req));
1008 nladdr.nl_family = AF_NETLINK;
1009
1010 req.nlh.nlmsg_len = sizeof(req);
1011 req.nlh.nlmsg_type = RTM_GETROUTE;
1012 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST;
1013 req.nlh.nlmsg_pid = 0;
1014 req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
1015 req.rtm.rtm_family = family;
1016 req.rtm.rtm_flags |= RTM_F_CLONED;
1017
1018 return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
1019}
1020
1021static int iproute_flush_cache(void)
1022{
1023#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1024
1025 int len;
1026 int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY);
1027 char *buffer = "-1";
1028
1029 if (flush_fd < 0) {
1030 fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH);
1031 return -1;
1032 }
1033
1034 len = strlen (buffer);
ae665a52 1035
aba5acdf
SH		 1036 if ((write (flush_fd, (void *)buffer, len)) < len) {
1037 fprintf (stderr, "Cannot flush routing cache\n");
1038 return -1;
1039 }
1040 close(flush_fd);
1041 return 0;
1042}
1043
1044
1045static int iproute_list_or_flush(int argc, char **argv, int flush)
1046{
1047 int do_ipv6 = preferred_family;
aba5acdf
SH		 1048 char *id = NULL;
1049 char *od = NULL;
1050
1051 iproute_reset_filter();
1052 filter.tb = RT_TABLE_MAIN;
1053
1054 if (flush && argc <= 0) {
1055 fprintf(stderr, "\"ip route flush\" requires arguments.\n");
1056 return -1;
1057 }
1058
1059 while (argc > 0) {
1060 if (matches(*argv, "table") == 0) {
f332d169 1061 __u32 tid;
aba5acdf
SH		 1062 NEXT_ARG();
1063 if (rtnl_rttable_a2n(&tid, *argv)) {
1064 if (strcmp(*argv, "all") == 0) {
bd4bcdad 1065 filter.tb = 0;
aba5acdf 1066 } else if (strcmp(*argv, "cache") == 0) {
bd4bcdad 1067 filter.cloned = 1;
aba5acdf
SH		 1068 } else if (strcmp(*argv, "help") == 0) {
1069 usage();
1070 } else {
1071 invarg("table id value is invalid\n", *argv);
1072 }
bd4bcdad
PM		 1073 } else
1074 filter.tb = tid;
aba5acdf
SH		 1075 } else if (matches(*argv, "cached") == 0 ||
1076 matches(*argv, "cloned") == 0) {
bd4bcdad 1077 filter.cloned = 1;
aba5acdf
SH		 1078 } else if (strcmp(*argv, "tos") == 0 ||
1079 matches(*argv, "dsfield") == 0) {
1080 __u32 tos;
1081 NEXT_ARG();
1082 if (rtnl_dsfield_a2n(&tos, *argv))
1083 invarg("TOS value is invalid\n", *argv);
1084 filter.tos = tos;
1085 filter.tosmask = -1;
1086 } else if (matches(*argv, "protocol") == 0) {
f332d169 1087 __u32 prot = 0;
aba5acdf
SH		 1088 NEXT_ARG();
1089 filter.protocolmask = -1;
1090 if (rtnl_rtprot_a2n(&prot, *argv)) {
1091 if (strcmp(*argv, "all") != 0)
1092 invarg("invalid \"protocol\"\n", *argv);
1093 prot = 0;
1094 filter.protocolmask = 0;
1095 }
1096 filter.protocol = prot;
1097 } else if (matches(*argv, "scope") == 0) {
f332d169 1098 __u32 scope = 0;
aba5acdf
SH		 1099 NEXT_ARG();
1100 filter.scopemask = -1;
1101 if (rtnl_rtscope_a2n(&scope, *argv)) {
1102 if (strcmp(*argv, "all") != 0)
1103 invarg("invalid \"scope\"\n", *argv);
1104 scope = RT_SCOPE_NOWHERE;
1105 filter.scopemask = 0;
1106 }
1107 filter.scope = scope;
1108 } else if (matches(*argv, "type") == 0) {
1109 int type;
1110 NEXT_ARG();
1111 filter.typemask = -1;
1112 if (rtnl_rtntype_a2n(&type, *argv))
1113 invarg("node type value is invalid\n", *argv);
1114 filter.type = type;
1115 } else if (strcmp(*argv, "dev") == 0 ||
1116 strcmp(*argv, "oif") == 0) {
1117 NEXT_ARG();
1118 od = *argv;
1119 } else if (strcmp(*argv, "iif") == 0) {
1120 NEXT_ARG();
1121 id = *argv;
1122 } else if (strcmp(*argv, "via") == 0) {
1123 NEXT_ARG();
1124 get_prefix(&filter.rvia, *argv, do_ipv6);
1125 } else if (strcmp(*argv, "src") == 0) {
1126 NEXT_ARG();
1127 get_prefix(&filter.rprefsrc, *argv, do_ipv6);
1128 } else if (matches(*argv, "realms") == 0) {
1129 __u32 realm;
1130 NEXT_ARG();
1131 if (get_rt_realms(&realm, *argv))
1132 invarg("invalid realms\n", *argv);
1133 filter.realm = realm;
1134 filter.realmmask = ~0U;
1135 if ((filter.realm&0xFFFF) == 0 &&
1136 (*argv)[strlen(*argv) - 1] == '/')
1137 filter.realmmask &= ~0xFFFF;
1138 if ((filter.realm&0xFFFF0000U) == 0 &&
1139 (strchr(*argv, '/') == NULL ||
1140 (*argv)[0] == '/'))
1141 filter.realmmask &= ~0xFFFF0000U;
1142 } else if (matches(*argv, "from") == 0) {
1143 NEXT_ARG();
1144 if (matches(*argv, "root") == 0) {
1145 NEXT_ARG();
1146 get_prefix(&filter.rsrc, *argv, do_ipv6);
1147 } else if (matches(*argv, "match") == 0) {
1148 NEXT_ARG();
1149 get_prefix(&filter.msrc, *argv, do_ipv6);
1150 } else {
1151 if (matches(*argv, "exact") == 0) {
1152 NEXT_ARG();
1153 }
1154 get_prefix(&filter.msrc, *argv, do_ipv6);
1155 filter.rsrc = filter.msrc;
1156 }
1157 } else {
1158 if (matches(*argv, "to") == 0) {
1159 NEXT_ARG();
1160 }
1161 if (matches(*argv, "root") == 0) {
1162 NEXT_ARG();
1163 get_prefix(&filter.rdst, *argv, do_ipv6);
1164 } else if (matches(*argv, "match") == 0) {
1165 NEXT_ARG();
1166 get_prefix(&filter.mdst, *argv, do_ipv6);
1167 } else {
1168 if (matches(*argv, "exact") == 0) {
1169 NEXT_ARG();
1170 }
1171 get_prefix(&filter.mdst, *argv, do_ipv6);
1172 filter.rdst = filter.mdst;
1173 }
1174 }
1175 argc--; argv++;
1176 }
1177
1178 if (do_ipv6 == AF_UNSPEC && filter.tb)
1179 do_ipv6 = AF_INET;
1180
aba5acdf
SH		 1181 ll_init_map(&rth);
1182
1183 if (id || od) {
1184 int idx;
1185
1186 if (id) {
1187 if ((idx = ll_name_to_index(id)) == 0) {
1188 fprintf(stderr, "Cannot find device \"%s\"\n", id);
1189 return -1;
1190 }
1191 filter.iif = idx;
1192 filter.iifmask = -1;
1193 }
1194 if (od) {
1195 if ((idx = ll_name_to_index(od)) == 0) {
1196 fprintf(stderr, "Cannot find device \"%s\"\n", od);
1197 return -1;
1198 }
1199 filter.oif = idx;
1200 filter.oifmask = -1;
1201 }
1202 }
1203
1204 if (flush) {
1205 int round = 0;
1206 char flushb[4096-512];
33551240 1207 time_t start = time(0);
aba5acdf 1208
bd4bcdad 1209 if (filter.cloned) {
aba5acdf
SH		 1210 if (do_ipv6 != AF_INET6) {
1211 iproute_flush_cache();
1212 if (show_stats)
1213 printf("*** IPv4 routing cache is flushed.\n");
1214 }
1215 if (do_ipv6 == AF_INET)
1216 return 0;
1217 }
1218
1219 filter.flushb = flushb;
1220 filter.flushp = 0;
1221 filter.flushe = sizeof(flushb);
aba5acdf
SH		 1222
1223 for (;;) {
1224 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1225 perror("Cannot send dump request");
1226 exit(1);
1227 }
1228 filter.flushed = 0;
1229 if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
1230 fprintf(stderr, "Flush terminated\n");
1231 exit(1);
1232 }
1233 if (filter.flushed == 0) {
f0b34d2d
AH		 1234 if (show_stats) {
1235 if (round == 0 && (!filter.cloned || do_ipv6 == AF_INET6))
1236 printf("Nothing to flush.\n");
1237 else
1238 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
1239 }
aba5acdf
SH		 1240 fflush(stdout);
1241 return 0;
1242 }
1243 round++;
1244 if (flush_update() < 0)
1245 exit(1);
33551240
SH		 1246
1247 if (time(0) - start > 30) {
1248 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1249 time(0) - start, filter.flushed);
1250 exit(1);
1251 }
1252
aba5acdf
SH		 1253 if (show_stats) {
1254 printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed);
1255 fflush(stdout);
1256 }
1257 }
1258 }
1259
bd4bcdad 1260 if (!filter.cloned) {
aba5acdf
SH		 1261 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1262 perror("Cannot send dump request");
1263 exit(1);
1264 }
1265 } else {
1266 if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
1267 perror("Cannot send dump request");
1268 exit(1);
1269 }
1270 }
1271
1272 if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
1273 fprintf(stderr, "Dump terminated\n");
1274 exit(1);
1275 }
1276
1277 exit(0);
1278}
1279
1280
1281int iproute_get(int argc, char **argv)
1282{
aba5acdf
SH		 1283 struct {
1284 struct nlmsghdr n;
1285 struct rtmsg r;
1286 char buf[1024];
1287 } req;
1288 char *idev = NULL;
1289 char *odev = NULL;
1290 int connected = 0;
1291 int from_ok = 0;
1292
1293 memset(&req, 0, sizeof(req));
1294
1295 iproute_reset_filter();
1296
1297 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
1298 req.n.nlmsg_flags = NLM_F_REQUEST;
1299 req.n.nlmsg_type = RTM_GETROUTE;
1300 req.r.rtm_family = preferred_family;
1301 req.r.rtm_table = 0;
1302 req.r.rtm_protocol = 0;
1303 req.r.rtm_scope = 0;
1304 req.r.rtm_type = 0;
1305 req.r.rtm_src_len = 0;
1306 req.r.rtm_dst_len = 0;
1307 req.r.rtm_tos = 0;
ae665a52 1308
aba5acdf
SH		 1309 while (argc > 0) {
1310 if (strcmp(*argv, "tos") == 0 ||
1311 matches(*argv, "dsfield") == 0) {
1312 __u32 tos;
1313 NEXT_ARG();
1314 if (rtnl_dsfield_a2n(&tos, *argv))
1315 invarg("TOS value is invalid\n", *argv);
1316 req.r.rtm_tos = tos;
1317 } else if (matches(*argv, "from") == 0) {
1318 inet_prefix addr;
1319 NEXT_ARG();
1320 if (matches(*argv, "help") == 0)
1321 usage();
1322 from_ok = 1;
1323 get_prefix(&addr, *argv, req.r.rtm_family);
1324 if (req.r.rtm_family == AF_UNSPEC)
1325 req.r.rtm_family = addr.family;
1326 if (addr.bytelen)
1327 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
1328 req.r.rtm_src_len = addr.bitlen;
1329 } else if (matches(*argv, "iif") == 0) {
1330 NEXT_ARG();
1331 idev = *argv;
1332 } else if (matches(*argv, "oif") == 0 ||
1333 strcmp(*argv, "dev") == 0) {
1334 NEXT_ARG();
1335 odev = *argv;
1336 } else if (matches(*argv, "notify") == 0) {
1337 req.r.rtm_flags |= RTM_F_NOTIFY;
1338 } else if (matches(*argv, "connected") == 0) {
1339 connected = 1;
1340 } else {
1341 inet_prefix addr;
1342 if (strcmp(*argv, "to") == 0) {
1343 NEXT_ARG();
1344 }
1345 if (matches(*argv, "help") == 0)
1346 usage();
1347 get_prefix(&addr, *argv, req.r.rtm_family);
1348 if (req.r.rtm_family == AF_UNSPEC)
1349 req.r.rtm_family = addr.family;
1350 if (addr.bytelen)
1351 addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
1352 req.r.rtm_dst_len = addr.bitlen;
1353 }
1354 argc--; argv++;
1355 }
1356
1357 if (req.r.rtm_dst_len == 0) {
1358 fprintf(stderr, "need at least destination address\n");
1359 exit(1);
1360 }
1361
aba5acdf
SH		 1362 ll_init_map(&rth);
1363
1364 if (idev || odev) {
1365 int idx;
1366
1367 if (idev) {
1368 if ((idx = ll_name_to_index(idev)) == 0) {
1369 fprintf(stderr, "Cannot find device \"%s\"\n", idev);
1370 return -1;
1371 }
1372 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
1373 }
1374 if (odev) {
1375 if ((idx = ll_name_to_index(odev)) == 0) {
1376 fprintf(stderr, "Cannot find device \"%s\"\n", odev);
1377 return -1;
1378 }
1379 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
1380 }
1381 }
1382
1383 if (req.r.rtm_family == AF_UNSPEC)
1384 req.r.rtm_family = AF_INET;
1385
1386 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
1387 exit(2);
1388
1389 if (connected && !from_ok) {
1390 struct rtmsg *r = NLMSG_DATA(&req.n);
1391 int len = req.n.nlmsg_len;
1392 struct rtattr * tb[RTA_MAX+1];
1393
1394 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1395 fprintf(stderr, "An error :-)\n");
1396 exit(1);
1397 }
1398
1399 if (req.n.nlmsg_type != RTM_NEWROUTE) {
1400 fprintf(stderr, "Not a route?\n");
1401 return -1;
1402 }
1403 len -= NLMSG_LENGTH(sizeof(*r));
1404 if (len < 0) {
1405 fprintf(stderr, "Wrong len %d\n", len);
1406 return -1;
1407 }
1408
aba5acdf
SH		 1409 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1410
1411 if (tb[RTA_PREFSRC]) {
1412 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
1413 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
1414 } else if (!tb[RTA_SRC]) {
1415 fprintf(stderr, "Failed to connect the route\n");
1416 return -1;
1417 }
1418 if (!odev && tb[RTA_OIF])
1419 tb[RTA_OIF]->rta_type = 0;
1420 if (tb[RTA_GATEWAY])
1421 tb[RTA_GATEWAY]->rta_type = 0;
1422 if (!idev && tb[RTA_IIF])
1423 tb[RTA_IIF]->rta_type = 0;
1424 req.n.nlmsg_flags = NLM_F_REQUEST;
1425 req.n.nlmsg_type = RTM_GETROUTE;
1426
1427 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
1428 exit(2);
1429 }
1430
1431 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1432 fprintf(stderr, "An error :-)\n");
1433 exit(1);
1434 }
1435
1436 exit(0);
1437}
1438
1439void iproute_reset_filter()
1440{
1441 memset(&filter, 0, sizeof(filter));
1442 filter.mdst.bitlen = -1;
1443 filter.msrc.bitlen = -1;
1444}
1445
1446int do_iproute(int argc, char **argv)
1447{
1448 if (argc < 1)
1449 return iproute_list_or_flush(0, NULL, 0);
ae665a52 1450
aba5acdf
SH		 1451 if (matches(*argv, "add") == 0)
1452 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
1453 argc-1, argv+1);
1454 if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
1455 return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
1456 argc-1, argv+1);
1457 if (matches(*argv, "replace") == 0)
1458 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
1459 argc-1, argv+1);
1460 if (matches(*argv, "prepend") == 0)
1461 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
1462 argc-1, argv+1);
1463 if (matches(*argv, "append") == 0)
1464 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
1465 argc-1, argv+1);
1466 if (matches(*argv, "test") == 0)
1467 return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
1468 argc-1, argv+1);
1469 if (matches(*argv, "delete") == 0)
1470 return iproute_modify(RTM_DELROUTE, 0,
1471 argc-1, argv+1);
1472 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1473 || matches(*argv, "lst") == 0)
1474 return iproute_list_or_flush(argc-1, argv+1, 0);
1475 if (matches(*argv, "get") == 0)
1476 return iproute_get(argc-1, argv+1);
1477 if (matches(*argv, "flush") == 0)
1478 return iproute_list_or_flush(argc-1, argv+1, 1);
1479 if (matches(*argv, "help") == 0)
1480 usage();
1481 fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
1482 exit(-1);
1483}
1484
Upstream mirror of iproute2