]> git.proxmox.com Git - mirror_iproute2.git/blame - ip/iproute.c
projects / mirror_iproute2.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
iproute: show metrics as an unsigned value
[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>
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",
f38c7334 55};
aba5acdf
SH		 56static void usage(void) __attribute__((noreturn));
57
58static void usage(void)
59{
60 fprintf(stderr, "Usage: ip route { list | flush } SELECTOR\n");
f4ff11e3
DS		 61 fprintf(stderr, " ip route save SELECTOR\n");
62 fprintf(stderr, " ip route restore\n");
aba5acdf
SH		 63 fprintf(stderr, " ip route get ADDRESS [ from ADDRESS iif STRING ]\n");
64 fprintf(stderr, " [ oif STRING ] [ tos TOS ]\n");
b0373bfb 65 fprintf(stderr, " [ mark NUMBER ]\n");
c0c44bfe 66 fprintf(stderr, " ip route { add | del | change | append | replace } ROUTE\n");
aba5acdf
SH		 67 fprintf(stderr, "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n");
68 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
69 fprintf(stderr, " [ type TYPE ] [ scope SCOPE ]\n");
70 fprintf(stderr, "ROUTE := NODE_SPEC [ INFO_SPEC ]\n");
71 fprintf(stderr, "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n");
72 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
73 fprintf(stderr, " [ scope SCOPE ] [ metric METRIC ]\n");
74 fprintf(stderr, "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n");
75 fprintf(stderr, "NH := [ via ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS\n");
76 fprintf(stderr, "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ]\n");
71e58151 77 fprintf(stderr, " [ rtt TIME ] [ rttvar TIME ] [reordering NUMBER ]\n");
a1f1143e 78 fprintf(stderr, " [ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n");
576c63ee 79 fprintf(stderr, " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n");
f5fd8003 80 fprintf(stderr, " [ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]\n");
aba5acdf
SH		 81 fprintf(stderr, "TYPE := [ unicast | local | broadcast | multicast | throw |\n");
82 fprintf(stderr, " unreachable | prohibit | blackhole | nat ]\n");
83 fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n");
84 fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n");
02d2ae55 85 fprintf(stderr, "MP_ALGO := { rr | drr | random | wrandom }\n");
aba5acdf
SH		 86 fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n");
87 fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n");
9b2cdc00 88 fprintf(stderr, "TIME := NUMBER[s|ms]\n");
aba5acdf
SH		 89 exit(-1);
90}
91
92
93static struct
94{
95 int tb;
bd4bcdad 96 int cloned;
aba5acdf
SH		 97 int flushed;
98 char *flushb;
99 int flushp;
100 int flushe;
aba5acdf
SH		 101 int protocol, protocolmask;
102 int scope, scopemask;
103 int type, typemask;
104 int tos, tosmask;
105 int iif, iifmask;
106 int oif, oifmask;
b0373bfb 107 int mark, markmask;
aba5acdf
SH		 108 int realm, realmmask;
109 inet_prefix rprefsrc;
110 inet_prefix rvia;
111 inet_prefix rdst;
112 inet_prefix mdst;
113 inet_prefix rsrc;
114 inet_prefix msrc;
115} filter;
116
117static int flush_update(void)
118{
f31a37f7 119 if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
1fb0a998 120 perror("Failed to send flush request");
aba5acdf
SH		 121 return -1;
122 }
123 filter.flushp = 0;
124 return 0;
125}
126
f4ff11e3 127int filter_nlmsg(struct nlmsghdr *n, struct rtattr **tb, int host_len)
aba5acdf 128{
aba5acdf 129 struct rtmsg *r = NLMSG_DATA(n);
aba5acdf
SH		 130 inet_prefix dst;
131 inet_prefix src;
aba5acdf 132 inet_prefix via;
f4ff11e3 133 inet_prefix prefsrc;
34e95647 134 __u32 table;
f4ff11e3 135 static int ip6_multiple_tables;
aba5acdf 136
34e95647
PM		 137 table = rtm_get_table(r, tb);
138
139 if (r->rtm_family == AF_INET6 && table != RT_TABLE_MAIN)
e0b29fe7
PM		 140 ip6_multiple_tables = 1;
141
44792827
UW		 142 if (filter.cloned == !(r->rtm_flags&RTM_F_CLONED))
143 return 0;
144
e0b29fe7 145 if (r->rtm_family == AF_INET6 && !ip6_multiple_tables) {
aba5acdf 146 if (filter.tb) {
bd4bcdad
PM		 147 if (filter.tb == RT_TABLE_LOCAL) {
148 if (r->rtm_type != RTN_LOCAL)
aba5acdf 149 return 0;
bd4bcdad
PM		 150 } else if (filter.tb == RT_TABLE_MAIN) {
151 if (r->rtm_type == RTN_LOCAL)
aba5acdf 152 return 0;
bd4bcdad
PM		 153 } else {
154 return 0;
aba5acdf
SH		 155 }
156 }
157 } else {
34e95647 158 if (filter.tb > 0 && filter.tb != table)
aba5acdf
SH		 159 return 0;
160 }
161 if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
162 return 0;
163 if ((filter.scope^r->rtm_scope)&filter.scopemask)
164 return 0;
165 if ((filter.type^r->rtm_type)&filter.typemask)
166 return 0;
167 if ((filter.tos^r->rtm_tos)&filter.tosmask)
168 return 0;
169 if (filter.rdst.family &&
170 (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len))
171 return 0;
172 if (filter.mdst.family &&
173 (r->rtm_family != filter.mdst.family ||
174 (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len)))
175 return 0;
176 if (filter.rsrc.family &&
177 (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len))
178 return 0;
179 if (filter.msrc.family &&
180 (r->rtm_family != filter.msrc.family ||
181 (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len)))
182 return 0;
183 if (filter.rvia.family && r->rtm_family != filter.rvia.family)
184 return 0;
185 if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
186 return 0;
187
aba5acdf
SH		 188 memset(&dst, 0, sizeof(dst));
189 dst.family = r->rtm_family;
190 if (tb[RTA_DST])
191 memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
192 if (filter.rsrc.family || filter.msrc.family) {
193 memset(&src, 0, sizeof(src));
194 src.family = r->rtm_family;
195 if (tb[RTA_SRC])
196 memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
197 }
198 if (filter.rvia.bitlen>0) {
199 memset(&via, 0, sizeof(via));
200 via.family = r->rtm_family;
201 if (tb[RTA_GATEWAY])
7849fb55 202 memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len/8);
aba5acdf
SH		 203 }
204 if (filter.rprefsrc.bitlen>0) {
205 memset(&prefsrc, 0, sizeof(prefsrc));
206 prefsrc.family = r->rtm_family;
207 if (tb[RTA_PREFSRC])
7849fb55 208 memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len/8);
aba5acdf
SH		 209 }
210
211 if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
212 return 0;
213 if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
214 inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
215 return 0;
216
217 if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
218 return 0;
219 if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
220 inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
221 return 0;
222
223 if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
224 return 0;
225 if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
226 return 0;
227 if (filter.realmmask) {
228 __u32 realms = 0;
229 if (tb[RTA_FLOW])
230 realms = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
231 if ((realms^filter.realm)&filter.realmmask)
232 return 0;
233 }
234 if (filter.iifmask) {
235 int iif = 0;
236 if (tb[RTA_IIF])
237 iif = *(int*)RTA_DATA(tb[RTA_IIF]);
238 if ((iif^filter.iif)&filter.iifmask)
239 return 0;
240 }
241 if (filter.oifmask) {
242 int oif = 0;
243 if (tb[RTA_OIF])
244 oif = *(int*)RTA_DATA(tb[RTA_OIF]);
245 if ((oif^filter.oif)&filter.oifmask)
246 return 0;
247 }
b0373bfb
ED		 248 if (filter.markmask) {
249 int mark = 0;
250 if (tb[RTA_MARK])
251 mark = *(int *)RTA_DATA(tb[RTA_MARK]);
252 if ((mark ^ filter.mark) & filter.markmask)
253 return 0;
254 }
ae665a52 255 if (filter.flushb &&
aba5acdf
SH		 256 r->rtm_family == AF_INET6 &&
257 r->rtm_dst_len == 0 &&
258 r->rtm_type == RTN_UNREACHABLE &&
259 tb[RTA_PRIORITY] &&
260 *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
261 return 0;
262
f4ff11e3
DS		 263 return 1;
264}
265
266int calc_host_len(struct rtmsg *r)
267{
268 if (r->rtm_family == AF_INET6)
269 return 128;
270 else if (r->rtm_family == AF_INET)
271 return 32;
272 else if (r->rtm_family == AF_DECnet)
273 return 16;
274 else if (r->rtm_family == AF_IPX)
275 return 80;
276 else
277 return -1;
278}
279
280int print_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
281{
282 FILE *fp = (FILE*)arg;
283 struct rtmsg *r = NLMSG_DATA(n);
284 int len = n->nlmsg_len;
285 struct rtattr * tb[RTA_MAX+1];
286 char abuf[256];
287 int host_len = -1;
288 __u32 table;
289 SPRINT_BUF(b1);
290 static int hz;
291
292 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
293 fprintf(stderr, "Not a route: %08x %08x %08x\n",
294 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
295 return 0;
296 }
297 if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
298 return 0;
299 len -= NLMSG_LENGTH(sizeof(*r));
300 if (len < 0) {
301 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
302 return -1;
303 }
304
305 host_len = calc_host_len(r);
306
307 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
308 table = rtm_get_table(r, tb);
309
310 if (!filter_nlmsg(n, tb, host_len))
311 return 0;
312
aba5acdf
SH		 313 if (filter.flushb) {
314 struct nlmsghdr *fn;
315 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
316 if (flush_update())
317 return -1;
318 }
319 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
320 memcpy(fn, n, n->nlmsg_len);
321 fn->nlmsg_type = RTM_DELROUTE;
322 fn->nlmsg_flags = NLM_F_REQUEST;
351efcde 323 fn->nlmsg_seq = ++rth.seq;
aba5acdf
SH		 324 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
325 filter.flushed++;
326 if (show_stats < 2)
327 return 0;
328 }
329
330 if (n->nlmsg_type == RTM_DELROUTE)
331 fprintf(fp, "Deleted ");
332 if (r->rtm_type != RTN_UNICAST && !filter.type)
333 fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
334
335 if (tb[RTA_DST]) {
336 if (r->rtm_dst_len != host_len) {
337 fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family,
338 RTA_PAYLOAD(tb[RTA_DST]),
339 RTA_DATA(tb[RTA_DST]),
340 abuf, sizeof(abuf)),
341 r->rtm_dst_len
342 );
343 } else {
344 fprintf(fp, "%s ", format_host(r->rtm_family,
345 RTA_PAYLOAD(tb[RTA_DST]),
346 RTA_DATA(tb[RTA_DST]),
347 abuf, sizeof(abuf))
348 );
349 }
350 } else if (r->rtm_dst_len) {
351 fprintf(fp, "0/%d ", r->rtm_dst_len);
352 } else {
353 fprintf(fp, "default ");
354 }
355 if (tb[RTA_SRC]) {
356 if (r->rtm_src_len != host_len) {
357 fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family,
358 RTA_PAYLOAD(tb[RTA_SRC]),
359 RTA_DATA(tb[RTA_SRC]),
360 abuf, sizeof(abuf)),
361 r->rtm_src_len
362 );
363 } else {
364 fprintf(fp, "from %s ", format_host(r->rtm_family,
365 RTA_PAYLOAD(tb[RTA_SRC]),
366 RTA_DATA(tb[RTA_SRC]),
367 abuf, sizeof(abuf))
368 );
369 }
370 } else if (r->rtm_src_len) {
371 fprintf(fp, "from 0/%u ", r->rtm_src_len);
372 }
373 if (r->rtm_tos && filter.tosmask != -1) {
374 SPRINT_BUF(b1);
375 fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
376 }
02d2ae55 377
aba5acdf 378 if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
ae665a52 379 fprintf(fp, "via %s ",
aba5acdf
SH		 380 format_host(r->rtm_family,
381 RTA_PAYLOAD(tb[RTA_GATEWAY]),
382 RTA_DATA(tb[RTA_GATEWAY]),
383 abuf, sizeof(abuf)));
384 }
385 if (tb[RTA_OIF] && filter.oifmask != -1)
386 fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
387
388 if (!(r->rtm_flags&RTM_F_CLONED)) {
34e95647
PM		 389 if (table != RT_TABLE_MAIN && !filter.tb)
390 fprintf(fp, " table %s ", rtnl_rttable_n2a(table, b1, sizeof(b1)));
aba5acdf
SH		 391 if (r->rtm_protocol != RTPROT_BOOT && filter.protocolmask != -1)
392 fprintf(fp, " proto %s ", rtnl_rtprot_n2a(r->rtm_protocol, b1, sizeof(b1)));
393 if (r->rtm_scope != RT_SCOPE_UNIVERSE && filter.scopemask != -1)
394 fprintf(fp, " scope %s ", rtnl_rtscope_n2a(r->rtm_scope, b1, sizeof(b1)));
395 }
396 if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
397 /* Do not use format_host(). It is our local addr
398 and symbolic name will not be useful.
399 */
ae665a52 400 fprintf(fp, " src %s ",
aba5acdf
SH		 401 rt_addr_n2a(r->rtm_family,
402 RTA_PAYLOAD(tb[RTA_PREFSRC]),
403 RTA_DATA(tb[RTA_PREFSRC]),
404 abuf, sizeof(abuf)));
405 }
406 if (tb[RTA_PRIORITY])
49b730d7 407 fprintf(fp, " metric %u ", *(__u32*)RTA_DATA(tb[RTA_PRIORITY]));
aba5acdf
SH		 408 if (r->rtm_flags & RTNH_F_DEAD)
409 fprintf(fp, "dead ");
410 if (r->rtm_flags & RTNH_F_ONLINK)
411 fprintf(fp, "onlink ");
412 if (r->rtm_flags & RTNH_F_PERVASIVE)
413 fprintf(fp, "pervasive ");
aba5acdf
SH		 414 if (r->rtm_flags & RTM_F_NOTIFY)
415 fprintf(fp, "notify ");
b0373bfb
ED		 416 if (tb[RTA_MARK]) {
417 unsigned int mark = *(unsigned int*)RTA_DATA(tb[RTA_MARK]);
418 if (mark) {
419 if (mark >= 16)
420 fprintf(fp, " mark 0x%x", mark);
421 else
422 fprintf(fp, " mark %u", mark);
423 }
424 }
aba5acdf
SH		 425
426 if (tb[RTA_FLOW] && filter.realmmask != ~0U) {
427 __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
428 __u32 from = to>>16;
429 to &= 0xFFFF;
430 fprintf(fp, "realm%s ", from ? "s" : "");
431 if (from) {
432 fprintf(fp, "%s/",
433 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
434 }
435 fprintf(fp, "%s ",
436 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
437 }
438 if ((r->rtm_flags&RTM_F_CLONED) && r->rtm_family == AF_INET) {
439 __u32 flags = r->rtm_flags&~0xFFFF;
440 int first = 1;
441
442 fprintf(fp, "%s cache ", _SL_);
443
444#define PRTFL(fl,flname) if (flags&RTCF_##fl) { \
445 flags &= ~RTCF_##fl; \
446 fprintf(fp, "%s" flname "%s", first ? "<" : "", flags ? "," : "> "); \
447 first = 0; }
448 PRTFL(LOCAL, "local");
449 PRTFL(REJECT, "reject");
450 PRTFL(MULTICAST, "mc");
451 PRTFL(BROADCAST, "brd");
452 PRTFL(DNAT, "dst-nat");
453 PRTFL(SNAT, "src-nat");
454 PRTFL(MASQ, "masq");
455 PRTFL(DIRECTDST, "dst-direct");
456 PRTFL(DIRECTSRC, "src-direct");
457 PRTFL(REDIRECTED, "redirected");
458 PRTFL(DOREDIRECT, "redirect");
459 PRTFL(FAST, "fastroute");
460 PRTFL(NOTIFY, "notify");
461 PRTFL(TPROXY, "proxy");
63a0f20a 462
aba5acdf
SH		 463 if (flags)
464 fprintf(fp, "%s%x> ", first ? "<" : "", flags);
465 if (tb[RTA_CACHEINFO]) {
466 struct rta_cacheinfo *ci = RTA_DATA(tb[RTA_CACHEINFO]);
aba5acdf 467 if (!hz)
5e8bc631 468 hz = get_user_hz();
aba5acdf
SH		 469 if (ci->rta_expires != 0)
470 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
471 if (ci->rta_error != 0)
472 fprintf(fp, " error %d", ci->rta_error);
473 if (show_stats) {
474 if (ci->rta_clntref)
475 fprintf(fp, " users %d", ci->rta_clntref);
476 if (ci->rta_used != 0)
477 fprintf(fp, " used %d", ci->rta_used);
478 if (ci->rta_lastuse != 0)
479 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
480 }
aba5acdf
SH		 481 if (ci->rta_id)
482 fprintf(fp, " ipid 0x%04x", ci->rta_id);
483 if (ci->rta_ts || ci->rta_tsage)
d5b7420a
SH		 484 fprintf(fp, " ts 0x%x tsage %dsec",
485 ci->rta_ts, ci->rta_tsage);
aba5acdf
SH		 486 }
487 } else if (r->rtm_family == AF_INET6) {
488 struct rta_cacheinfo *ci = NULL;
489 if (tb[RTA_CACHEINFO])
490 ci = RTA_DATA(tb[RTA_CACHEINFO]);
491 if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
aba5acdf 492 if (!hz)
5e8bc631 493 hz = get_user_hz();
aba5acdf
SH		 494 if (r->rtm_flags & RTM_F_CLONED)
495 fprintf(fp, "%s cache ", _SL_);
496 if (ci->rta_expires)
497 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
498 if (ci->rta_error != 0)
499 fprintf(fp, " error %d", ci->rta_error);
500 if (show_stats) {
501 if (ci->rta_clntref)
502 fprintf(fp, " users %d", ci->rta_clntref);
503 if (ci->rta_used != 0)
504 fprintf(fp, " used %d", ci->rta_used);
505 if (ci->rta_lastuse != 0)
506 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
507 }
508 } else if (ci) {
509 if (ci->rta_error != 0)
510 fprintf(fp, " error %d", ci->rta_error);
511 }
512 }
513 if (tb[RTA_METRICS]) {
514 int i;
515 unsigned mxlock = 0;
516 struct rtattr *mxrta[RTAX_MAX+1];
517
aba5acdf
SH		 518 parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(tb[RTA_METRICS]),
519 RTA_PAYLOAD(tb[RTA_METRICS]));
520 if (mxrta[RTAX_LOCK])
521 mxlock = *(unsigned*)RTA_DATA(mxrta[RTAX_LOCK]);
522
f38c7334 523 for (i=2; i<= RTAX_MAX; i++) {
ced61d7d
SH		 524 unsigned val;
525
aba5acdf
SH		 526 if (mxrta[i] == NULL)
527 continue;
6a79240b
SH		 528
529 if (i < sizeof(mx_names)/sizeof(char*) && mx_names[i])
530 fprintf(fp, " %s", mx_names[i]);
aba5acdf 531 else
5e8bc631 532 fprintf(fp, " metric %d", i);
aba5acdf
SH		 533 if (mxlock & (1<<i))
534 fprintf(fp, " lock");
535
ced61d7d
SH		 536 val = *(unsigned*)RTA_DATA(mxrta[i]);
537 switch (i) {
538 case RTAX_HOPLIMIT:
62011a0b 539 if ((int)val == -1)
ced61d7d
SH		 540 val = 0;
541 /* fall through */
542 default:
543 fprintf(fp, " %u", val);
544 break;
aba5acdf 545
ced61d7d
SH		 546 case RTAX_RTT:
547 case RTAX_RTTVAR:
548 case RTAX_RTO_MIN:
aba5acdf
SH		 549 if (i == RTAX_RTT)
550 val /= 8;
54e0b2e7 551 else if (i == RTAX_RTTVAR)
aba5acdf 552 val /= 4;
ced61d7d 553
9b2cdc00
GR		 554 if (val >= 1000)
555 fprintf(fp, " %gs", val/1e3);
aba5acdf 556 else
9b2cdc00 557 fprintf(fp, " %ums", val);
aba5acdf
SH		 558 }
559 }
560 }
561 if (tb[RTA_IIF] && filter.iifmask != -1) {
562 fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
563 }
564 if (tb[RTA_MULTIPATH]) {
565 struct rtnexthop *nh = RTA_DATA(tb[RTA_MULTIPATH]);
566 int first = 0;
567
568 len = RTA_PAYLOAD(tb[RTA_MULTIPATH]);
569
570 for (;;) {
571 if (len < sizeof(*nh))
572 break;
573 if (nh->rtnh_len > len)
574 break;
575 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
576 if (first)
577 fprintf(fp, " Oifs:");
578 else
579 fprintf(fp, " ");
580 } else
581 fprintf(fp, "%s\tnexthop", _SL_);
582 if (nh->rtnh_len > sizeof(*nh)) {
aba5acdf
SH		 583 parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh), nh->rtnh_len - sizeof(*nh));
584 if (tb[RTA_GATEWAY]) {
ae665a52 585 fprintf(fp, " via %s ",
aba5acdf
SH		 586 format_host(r->rtm_family,
587 RTA_PAYLOAD(tb[RTA_GATEWAY]),
588 RTA_DATA(tb[RTA_GATEWAY]),
589 abuf, sizeof(abuf)));
590 }
f4f6d640
PM		 591 if (tb[RTA_FLOW]) {
592 __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
593 __u32 from = to>>16;
594 to &= 0xFFFF;
595 fprintf(fp, " realm%s ", from ? "s" : "");
596 if (from) {
597 fprintf(fp, "%s/",
598 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
599 }
600 fprintf(fp, "%s",
601 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
602 }
aba5acdf
SH		 603 }
604 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
605 fprintf(fp, " %s", ll_index_to_name(nh->rtnh_ifindex));
606 if (nh->rtnh_hops != 1)
607 fprintf(fp, "(ttl>%d)", nh->rtnh_hops);
608 } else {
609 fprintf(fp, " dev %s", ll_index_to_name(nh->rtnh_ifindex));
610 fprintf(fp, " weight %d", nh->rtnh_hops+1);
611 }
612 if (nh->rtnh_flags & RTNH_F_DEAD)
613 fprintf(fp, " dead");
614 if (nh->rtnh_flags & RTNH_F_ONLINK)
615 fprintf(fp, " onlink");
616 if (nh->rtnh_flags & RTNH_F_PERVASIVE)
617 fprintf(fp, " pervasive");
618 len -= NLMSG_ALIGN(nh->rtnh_len);
619 nh = RTNH_NEXT(nh);
620 }
621 }
622 fprintf(fp, "\n");
623 fflush(fp);
624 return 0;
625}
626
627
628int parse_one_nh(struct rtattr *rta, struct rtnexthop *rtnh, int *argcp, char ***argvp)
629{
630 int argc = *argcp;
631 char **argv = *argvp;
632
633 while (++argv, --argc > 0) {
634 if (strcmp(*argv, "via") == 0) {
635 NEXT_ARG();
636 rta_addattr32(rta, 4096, RTA_GATEWAY, get_addr32(*argv));
637 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
638 } else if (strcmp(*argv, "dev") == 0) {
639 NEXT_ARG();
640 if ((rtnh->rtnh_ifindex = ll_name_to_index(*argv)) == 0) {
641 fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
642 exit(1);
643 }
644 } else if (strcmp(*argv, "weight") == 0) {
645 unsigned w;
646 NEXT_ARG();
647 if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
648 invarg("\"weight\" is invalid\n", *argv);
649 rtnh->rtnh_hops = w - 1;
650 } else if (strcmp(*argv, "onlink") == 0) {
651 rtnh->rtnh_flags |= RTNH_F_ONLINK;
f4f6d640
PM		 652 } else if (matches(*argv, "realms") == 0) {
653 __u32 realm;
654 NEXT_ARG();
655 if (get_rt_realms(&realm, *argv))
656 invarg("\"realm\" value is invalid\n", *argv);
657 rta_addattr32(rta, 4096, RTA_FLOW, realm);
658 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
aba5acdf
SH		 659 } else
660 break;
661 }
662 *argcp = argc;
663 *argvp = argv;
664 return 0;
665}
666
667int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r, int argc, char **argv)
668{
669 char buf[1024];
670 struct rtattr *rta = (void*)buf;
671 struct rtnexthop *rtnh;
672
673 rta->rta_type = RTA_MULTIPATH;
674 rta->rta_len = RTA_LENGTH(0);
675 rtnh = RTA_DATA(rta);
676
677 while (argc > 0) {
678 if (strcmp(*argv, "nexthop") != 0) {
679 fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
680 exit(-1);
681 }
682 if (argc <= 1) {
683 fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
684 exit(-1);
685 }
686 memset(rtnh, 0, sizeof(*rtnh));
687 rtnh->rtnh_len = sizeof(*rtnh);
688 rta->rta_len += rtnh->rtnh_len;
689 parse_one_nh(rta, rtnh, &argc, &argv);
690 rtnh = RTNH_NEXT(rtnh);
691 }
692
693 if (rta->rta_len > RTA_LENGTH(0))
694 addattr_l(n, 1024, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta));
695 return 0;
696}
697
698
699int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
700{
aba5acdf
SH		 701 struct {
702 struct nlmsghdr n;
703 struct rtmsg r;
704 char buf[1024];
705 } req;
706 char mxbuf[256];
707 struct rtattr * mxrta = (void*)mxbuf;
708 unsigned mxlock = 0;
709 char *d = NULL;
710 int gw_ok = 0;
711 int dst_ok = 0;
712 int nhs_ok = 0;
713 int scope_ok = 0;
714 int table_ok = 0;
54e0b2e7 715 int raw = 0;
aba5acdf
SH		 716
717 memset(&req, 0, sizeof(req));
718
719 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
720 req.n.nlmsg_flags = NLM_F_REQUEST|flags;
721 req.n.nlmsg_type = cmd;
722 req.r.rtm_family = preferred_family;
723 req.r.rtm_table = RT_TABLE_MAIN;
724 req.r.rtm_scope = RT_SCOPE_NOWHERE;
725
726 if (cmd != RTM_DELROUTE) {
727 req.r.rtm_protocol = RTPROT_BOOT;
728 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
729 req.r.rtm_type = RTN_UNICAST;
730 }
731
732 mxrta->rta_type = RTA_METRICS;
733 mxrta->rta_len = RTA_LENGTH(0);
734
735 while (argc > 0) {
736 if (strcmp(*argv, "src") == 0) {
737 inet_prefix addr;
738 NEXT_ARG();
739 get_addr(&addr, *argv, req.r.rtm_family);
740 if (req.r.rtm_family == AF_UNSPEC)
741 req.r.rtm_family = addr.family;
742 addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
743 } else if (strcmp(*argv, "via") == 0) {
744 inet_prefix addr;
745 gw_ok = 1;
746 NEXT_ARG();
747 get_addr(&addr, *argv, req.r.rtm_family);
748 if (req.r.rtm_family == AF_UNSPEC)
749 req.r.rtm_family = addr.family;
750 addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
751 } else if (strcmp(*argv, "from") == 0) {
752 inet_prefix addr;
753 NEXT_ARG();
754 get_prefix(&addr, *argv, req.r.rtm_family);
755 if (req.r.rtm_family == AF_UNSPEC)
756 req.r.rtm_family = addr.family;
757 if (addr.bytelen)
758 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
759 req.r.rtm_src_len = addr.bitlen;
760 } else if (strcmp(*argv, "tos") == 0 ||
761 matches(*argv, "dsfield") == 0) {
762 __u32 tos;
763 NEXT_ARG();
764 if (rtnl_dsfield_a2n(&tos, *argv))
765 invarg("\"tos\" value is invalid\n", *argv);
766 req.r.rtm_tos = tos;
767 } else if (matches(*argv, "metric") == 0 ||
768 matches(*argv, "priority") == 0 ||
769 matches(*argv, "preference") == 0) {
770 __u32 metric;
771 NEXT_ARG();
772 if (get_u32(&metric, *argv, 0))
773 invarg("\"metric\" value is invalid\n", *argv);
774 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
775 } else if (strcmp(*argv, "scope") == 0) {
f332d169 776 __u32 scope = 0;
aba5acdf
SH		 777 NEXT_ARG();
778 if (rtnl_rtscope_a2n(&scope, *argv))
779 invarg("invalid \"scope\" value\n", *argv);
780 req.r.rtm_scope = scope;
781 scope_ok = 1;
782 } else if (strcmp(*argv, "mtu") == 0) {
783 unsigned mtu;
784 NEXT_ARG();
785 if (strcmp(*argv, "lock") == 0) {
786 mxlock |= (1<<RTAX_MTU);
787 NEXT_ARG();
788 }
789 if (get_unsigned(&mtu, *argv, 0))
790 invarg("\"mtu\" value is invalid\n", *argv);
791 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
71e58151
GBY		 792 } else if (strcmp(*argv, "hoplimit") == 0) {
793 unsigned hoplimit;
794 NEXT_ARG();
795 if (strcmp(*argv, "lock") == 0) {
796 mxlock |= (1<<RTAX_HOPLIMIT);
797 NEXT_ARG();
798 }
799 if (get_unsigned(&hoplimit, *argv, 0))
800 invarg("\"hoplimit\" value is invalid\n", *argv);
801 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit);
aba5acdf
SH		 802 } else if (strcmp(*argv, "advmss") == 0) {
803 unsigned mss;
804 NEXT_ARG();
805 if (strcmp(*argv, "lock") == 0) {
806 mxlock |= (1<<RTAX_ADVMSS);
807 NEXT_ARG();
808 }
809 if (get_unsigned(&mss, *argv, 0))
810 invarg("\"mss\" value is invalid\n", *argv);
811 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
aba5acdf
SH		 812 } else if (matches(*argv, "reordering") == 0) {
813 unsigned reord;
814 NEXT_ARG();
815 if (strcmp(*argv, "lock") == 0) {
816 mxlock |= (1<<RTAX_REORDERING);
817 NEXT_ARG();
818 }
819 if (get_unsigned(&reord, *argv, 0))
820 invarg("\"reordering\" value is invalid\n", *argv);
821 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
aba5acdf
SH		 822 } else if (strcmp(*argv, "rtt") == 0) {
823 unsigned rtt;
824 NEXT_ARG();
825 if (strcmp(*argv, "lock") == 0) {
826 mxlock |= (1<<RTAX_RTT);
827 NEXT_ARG();
828 }
81d03dc3 829 if (get_time_rtt(&rtt, *argv, &raw))
aba5acdf 830 invarg("\"rtt\" value is invalid\n", *argv);
54e0b2e7
RJ		 831 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT,
832 (raw) ? rtt : rtt * 8);
833 } else if (strcmp(*argv, "rto_min") == 0) {
834 unsigned rto_min;
835 NEXT_ARG();
836 mxlock |= (1<<RTAX_RTO_MIN);
81d03dc3 837 if (get_time_rtt(&rto_min, *argv, &raw))
54e0b2e7
RJ		 838 invarg("\"rto_min\" value is invalid\n",
839 *argv);
840 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN,
841 rto_min);
aba5acdf
SH		 842 } else if (matches(*argv, "window") == 0) {
843 unsigned win;
844 NEXT_ARG();
845 if (strcmp(*argv, "lock") == 0) {
846 mxlock |= (1<<RTAX_WINDOW);
847 NEXT_ARG();
848 }
849 if (get_unsigned(&win, *argv, 0))
850 invarg("\"window\" value is invalid\n", *argv);
851 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
852 } else if (matches(*argv, "cwnd") == 0) {
853 unsigned win;
854 NEXT_ARG();
855 if (strcmp(*argv, "lock") == 0) {
856 mxlock |= (1<<RTAX_CWND);
857 NEXT_ARG();
858 }
859 if (get_unsigned(&win, *argv, 0))
860 invarg("\"cwnd\" value is invalid\n", *argv);
861 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
a1f1143e
VW		 862 } else if (matches(*argv, "initcwnd") == 0) {
863 unsigned win;
864 NEXT_ARG();
865 if (strcmp(*argv, "lock") == 0) {
866 mxlock |= (1<<RTAX_INITCWND);
867 NEXT_ARG();
868 }
869 if (get_unsigned(&win, *argv, 0))
870 invarg("\"initcwnd\" value is invalid\n", *argv);
871 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITCWND, win);
f5fd8003 872 } else if (matches(*argv, "initrwnd") == 0) {
873 unsigned win;
874 NEXT_ARG();
875 if (strcmp(*argv, "lock") == 0) {
876 mxlock |= (1<<RTAX_INITRWND);
877 NEXT_ARG();
878 }
879 if (get_unsigned(&win, *argv, 0))
880 invarg("\"initrwnd\" value is invalid\n", *argv);
881 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITRWND, win);
aba5acdf
SH		 882 } else if (matches(*argv, "rttvar") == 0) {
883 unsigned win;
884 NEXT_ARG();
885 if (strcmp(*argv, "lock") == 0) {
886 mxlock |= (1<<RTAX_RTTVAR);
887 NEXT_ARG();
888 }
81d03dc3 889 if (get_time_rtt(&win, *argv, &raw))
aba5acdf 890 invarg("\"rttvar\" value is invalid\n", *argv);
54e0b2e7
RJ		 891 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR,
892 (raw) ? win : win * 4);
aba5acdf
SH		 893 } else if (matches(*argv, "ssthresh") == 0) {
894 unsigned win;
895 NEXT_ARG();
896 if (strcmp(*argv, "lock") == 0) {
897 mxlock |= (1<<RTAX_SSTHRESH);
898 NEXT_ARG();
899 }
900 if (get_unsigned(&win, *argv, 0))
901 invarg("\"ssthresh\" value is invalid\n", *argv);
902 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
903 } else if (matches(*argv, "realms") == 0) {
904 __u32 realm;
905 NEXT_ARG();
906 if (get_rt_realms(&realm, *argv))
907 invarg("\"realm\" value is invalid\n", *argv);
908 addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
909 } else if (strcmp(*argv, "onlink") == 0) {
910 req.r.rtm_flags |= RTNH_F_ONLINK;
aba5acdf
SH		 911 } else if (strcmp(*argv, "nexthop") == 0) {
912 nhs_ok = 1;
913 break;
914 } else if (matches(*argv, "protocol") == 0) {
f332d169 915 __u32 prot;
aba5acdf
SH		 916 NEXT_ARG();
917 if (rtnl_rtprot_a2n(&prot, *argv))
918 invarg("\"protocol\" value is invalid\n", *argv);
919 req.r.rtm_protocol = prot;
aba5acdf 920 } else if (matches(*argv, "table") == 0) {
f332d169 921 __u32 tid;
aba5acdf
SH		 922 NEXT_ARG();
923 if (rtnl_rttable_a2n(&tid, *argv))
924 invarg("\"table\" value is invalid\n", *argv);
34e95647
PM		 925 if (tid < 256)
926 req.r.rtm_table = tid;
927 else {
928 req.r.rtm_table = RT_TABLE_UNSPEC;
929 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
930 }
aba5acdf
SH		 931 table_ok = 1;
932 } else if (strcmp(*argv, "dev") == 0 ||
933 strcmp(*argv, "oif") == 0) {
934 NEXT_ARG();
935 d = *argv;
936 } else {
937 int type;
938 inet_prefix dst;
939
940 if (strcmp(*argv, "to") == 0) {
941 NEXT_ARG();
942 }
943 if ((**argv < '0' || **argv > '9') &&
944 rtnl_rtntype_a2n(&type, *argv) == 0) {
945 NEXT_ARG();
946 req.r.rtm_type = type;
aba5acdf
SH		 947 }
948
949 if (matches(*argv, "help") == 0)
950 usage();
951 if (dst_ok)
952 duparg2("to", *argv);
953 get_prefix(&dst, *argv, req.r.rtm_family);
954 if (req.r.rtm_family == AF_UNSPEC)
955 req.r.rtm_family = dst.family;
956 req.r.rtm_dst_len = dst.bitlen;
957 dst_ok = 1;
958 if (dst.bytelen)
959 addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
960 }
961 argc--; argv++;
962 }
963
aba5acdf
SH		 964 if (d || nhs_ok) {
965 int idx;
966
967 ll_init_map(&rth);
968
969 if (d) {
970 if ((idx = ll_name_to_index(d)) == 0) {
971 fprintf(stderr, "Cannot find device \"%s\"\n", d);
972 return -1;
973 }
974 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
975 }
976 }
977
978 if (mxrta->rta_len > RTA_LENGTH(0)) {
979 if (mxlock)
980 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
981 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
982 }
983
984 if (nhs_ok)
985 parse_nexthops(&req.n, &req.r, argc, argv);
986
987 if (!table_ok) {
988 if (req.r.rtm_type == RTN_LOCAL ||
989 req.r.rtm_type == RTN_BROADCAST ||
990 req.r.rtm_type == RTN_NAT ||
991 req.r.rtm_type == RTN_ANYCAST)
992 req.r.rtm_table = RT_TABLE_LOCAL;
993 }
994 if (!scope_ok) {
995 if (req.r.rtm_type == RTN_LOCAL ||
996 req.r.rtm_type == RTN_NAT)
997 req.r.rtm_scope = RT_SCOPE_HOST;
998 else if (req.r.rtm_type == RTN_BROADCAST ||
999 req.r.rtm_type == RTN_MULTICAST ||
1000 req.r.rtm_type == RTN_ANYCAST)
1001 req.r.rtm_scope = RT_SCOPE_LINK;
1002 else if (req.r.rtm_type == RTN_UNICAST ||
1003 req.r.rtm_type == RTN_UNSPEC) {
1004 if (cmd == RTM_DELROUTE)
1005 req.r.rtm_scope = RT_SCOPE_NOWHERE;
1006 else if (!gw_ok && !nhs_ok)
1007 req.r.rtm_scope = RT_SCOPE_LINK;
1008 }
1009 }
1010
1011 if (req.r.rtm_family == AF_UNSPEC)
1012 req.r.rtm_family = AF_INET;
1013
cd70f3f5 1014 if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
aba5acdf
SH		 1015 exit(2);
1016
1017 return 0;
1018}
1019
1020static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
1021{
1022 struct {
1023 struct nlmsghdr nlh;
1024 struct rtmsg rtm;
1025 } req;
1026 struct sockaddr_nl nladdr;
1027
1028 memset(&nladdr, 0, sizeof(nladdr));
1029 memset(&req, 0, sizeof(req));
1030 nladdr.nl_family = AF_NETLINK;
1031
1032 req.nlh.nlmsg_len = sizeof(req);
1033 req.nlh.nlmsg_type = RTM_GETROUTE;
1034 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST;
1035 req.nlh.nlmsg_pid = 0;
1036 req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
1037 req.rtm.rtm_family = family;
1038 req.rtm.rtm_flags |= RTM_F_CLONED;
1039
1040 return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
1041}
1042
1043static int iproute_flush_cache(void)
1044{
1045#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1046
1047 int len;
1048 int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY);
1049 char *buffer = "-1";
1050
1051 if (flush_fd < 0) {
1052 fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH);
1053 return -1;
1054 }
1055
1056 len = strlen (buffer);
ae665a52 1057
aba5acdf
SH		 1058 if ((write (flush_fd, (void *)buffer, len)) < len) {
1059 fprintf (stderr, "Cannot flush routing cache\n");
25352af7 1060 close(flush_fd);
aba5acdf
SH		 1061 return -1;
1062 }
1063 close(flush_fd);
1064 return 0;
1065}
1066
f4ff11e3
DS		 1067int save_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
1068{
1069 int ret;
1070 int len = n->nlmsg_len;
1071 struct rtmsg *r = NLMSG_DATA(n);
1072 struct rtattr *tb[RTA_MAX+1];
1073 int host_len = -1;
1074
1075 if (isatty(STDOUT_FILENO)) {
1076 fprintf(stderr, "Not sending binary stream to stdout\n");
1077 return -1;
1078 }
1079
1080 host_len = calc_host_len(r);
1081 len -= NLMSG_LENGTH(sizeof(*r));
1082 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1083
1084 if (!filter_nlmsg(n, tb, host_len))
1085 return 0;
1086
1087 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
1088 if ((ret > 0) && (ret != n->nlmsg_len)) {
1089 fprintf(stderr, "Short write while saving nlmsg\n");
1090 ret = -EIO;
1091 }
1092
1093 return ret == n->nlmsg_len ? 0 : ret;
1094}
aba5acdf 1095
f4ff11e3 1096static int iproute_list_flush_or_save(int argc, char **argv, int action)
aba5acdf
SH		 1097{
1098 int do_ipv6 = preferred_family;
aba5acdf
SH		 1099 char *id = NULL;
1100 char *od = NULL;
b0373bfb 1101 unsigned int mark = 0;
f4ff11e3
DS		 1102 rtnl_filter_t filter_fn;
1103
1104 if (action == IPROUTE_SAVE)
1105 filter_fn = save_route;
1106 else
1107 filter_fn = print_route;
aba5acdf
SH		 1108
1109 iproute_reset_filter();
1110 filter.tb = RT_TABLE_MAIN;
1111
f4ff11e3 1112 if ((action == IPROUTE_FLUSH) && argc <= 0) {
aba5acdf
SH		 1113 fprintf(stderr, "\"ip route flush\" requires arguments.\n");
1114 return -1;
1115 }
1116
1117 while (argc > 0) {
1118 if (matches(*argv, "table") == 0) {
f332d169 1119 __u32 tid;
aba5acdf
SH		 1120 NEXT_ARG();
1121 if (rtnl_rttable_a2n(&tid, *argv)) {
1122 if (strcmp(*argv, "all") == 0) {
bd4bcdad 1123 filter.tb = 0;
aba5acdf 1124 } else if (strcmp(*argv, "cache") == 0) {
bd4bcdad 1125 filter.cloned = 1;
aba5acdf
SH		 1126 } else if (strcmp(*argv, "help") == 0) {
1127 usage();
1128 } else {
1129 invarg("table id value is invalid\n", *argv);
1130 }
bd4bcdad
PM		 1131 } else
1132 filter.tb = tid;
aba5acdf
SH		 1133 } else if (matches(*argv, "cached") == 0 ||
1134 matches(*argv, "cloned") == 0) {
bd4bcdad 1135 filter.cloned = 1;
aba5acdf
SH		 1136 } else if (strcmp(*argv, "tos") == 0 ||
1137 matches(*argv, "dsfield") == 0) {
1138 __u32 tos;
1139 NEXT_ARG();
1140 if (rtnl_dsfield_a2n(&tos, *argv))
1141 invarg("TOS value is invalid\n", *argv);
1142 filter.tos = tos;
1143 filter.tosmask = -1;
1144 } else if (matches(*argv, "protocol") == 0) {
f332d169 1145 __u32 prot = 0;
aba5acdf
SH		 1146 NEXT_ARG();
1147 filter.protocolmask = -1;
1148 if (rtnl_rtprot_a2n(&prot, *argv)) {
1149 if (strcmp(*argv, "all") != 0)
1150 invarg("invalid \"protocol\"\n", *argv);
1151 prot = 0;
1152 filter.protocolmask = 0;
1153 }
1154 filter.protocol = prot;
1155 } else if (matches(*argv, "scope") == 0) {
f332d169 1156 __u32 scope = 0;
aba5acdf
SH		 1157 NEXT_ARG();
1158 filter.scopemask = -1;
1159 if (rtnl_rtscope_a2n(&scope, *argv)) {
1160 if (strcmp(*argv, "all") != 0)
1161 invarg("invalid \"scope\"\n", *argv);
1162 scope = RT_SCOPE_NOWHERE;
1163 filter.scopemask = 0;
1164 }
1165 filter.scope = scope;
1166 } else if (matches(*argv, "type") == 0) {
1167 int type;
1168 NEXT_ARG();
1169 filter.typemask = -1;
1170 if (rtnl_rtntype_a2n(&type, *argv))
1171 invarg("node type value is invalid\n", *argv);
1172 filter.type = type;
1173 } else if (strcmp(*argv, "dev") == 0 ||
1174 strcmp(*argv, "oif") == 0) {
1175 NEXT_ARG();
1176 od = *argv;
1177 } else if (strcmp(*argv, "iif") == 0) {
1178 NEXT_ARG();
1179 id = *argv;
b0373bfb
ED		 1180 } else if (strcmp(*argv, "mark") == 0) {
1181 NEXT_ARG();
1182 get_unsigned(&mark, *argv, 0);
1183 filter.markmask = -1;
aba5acdf
SH		 1184 } else if (strcmp(*argv, "via") == 0) {
1185 NEXT_ARG();
1186 get_prefix(&filter.rvia, *argv, do_ipv6);
1187 } else if (strcmp(*argv, "src") == 0) {
1188 NEXT_ARG();
1189 get_prefix(&filter.rprefsrc, *argv, do_ipv6);
1190 } else if (matches(*argv, "realms") == 0) {
1191 __u32 realm;
1192 NEXT_ARG();
1193 if (get_rt_realms(&realm, *argv))
1194 invarg("invalid realms\n", *argv);
1195 filter.realm = realm;
1196 filter.realmmask = ~0U;
1197 if ((filter.realm&0xFFFF) == 0 &&
1198 (*argv)[strlen(*argv) - 1] == '/')
1199 filter.realmmask &= ~0xFFFF;
1200 if ((filter.realm&0xFFFF0000U) == 0 &&
1201 (strchr(*argv, '/') == NULL ||
1202 (*argv)[0] == '/'))
1203 filter.realmmask &= ~0xFFFF0000U;
1204 } else if (matches(*argv, "from") == 0) {
1205 NEXT_ARG();
1206 if (matches(*argv, "root") == 0) {
1207 NEXT_ARG();
1208 get_prefix(&filter.rsrc, *argv, do_ipv6);
1209 } else if (matches(*argv, "match") == 0) {
1210 NEXT_ARG();
1211 get_prefix(&filter.msrc, *argv, do_ipv6);
1212 } else {
1213 if (matches(*argv, "exact") == 0) {
1214 NEXT_ARG();
1215 }
1216 get_prefix(&filter.msrc, *argv, do_ipv6);
1217 filter.rsrc = filter.msrc;
1218 }
1219 } else {
1220 if (matches(*argv, "to") == 0) {
1221 NEXT_ARG();
1222 }
1223 if (matches(*argv, "root") == 0) {
1224 NEXT_ARG();
1225 get_prefix(&filter.rdst, *argv, do_ipv6);
1226 } else if (matches(*argv, "match") == 0) {
1227 NEXT_ARG();
1228 get_prefix(&filter.mdst, *argv, do_ipv6);
1229 } else {
1230 if (matches(*argv, "exact") == 0) {
1231 NEXT_ARG();
1232 }
1233 get_prefix(&filter.mdst, *argv, do_ipv6);
1234 filter.rdst = filter.mdst;
1235 }
1236 }
1237 argc--; argv++;
1238 }
1239
1240 if (do_ipv6 == AF_UNSPEC && filter.tb)
1241 do_ipv6 = AF_INET;
1242
aba5acdf
SH		 1243 ll_init_map(&rth);
1244
1245 if (id || od) {
1246 int idx;
1247
1248 if (id) {
1249 if ((idx = ll_name_to_index(id)) == 0) {
1250 fprintf(stderr, "Cannot find device \"%s\"\n", id);
1251 return -1;
1252 }
1253 filter.iif = idx;
1254 filter.iifmask = -1;
1255 }
1256 if (od) {
1257 if ((idx = ll_name_to_index(od)) == 0) {
1258 fprintf(stderr, "Cannot find device \"%s\"\n", od);
1259 return -1;
1260 }
1261 filter.oif = idx;
1262 filter.oifmask = -1;
1263 }
1264 }
b0373bfb 1265 filter.mark = mark;
aba5acdf 1266
f4ff11e3 1267 if (action == IPROUTE_FLUSH) {
aba5acdf
SH		 1268 int round = 0;
1269 char flushb[4096-512];
33551240 1270 time_t start = time(0);
aba5acdf 1271
bd4bcdad 1272 if (filter.cloned) {
aba5acdf
SH		 1273 if (do_ipv6 != AF_INET6) {
1274 iproute_flush_cache();
1275 if (show_stats)
1276 printf("*** IPv4 routing cache is flushed.\n");
1277 }
1278 if (do_ipv6 == AF_INET)
1279 return 0;
1280 }
1281
1282 filter.flushb = flushb;
1283 filter.flushp = 0;
1284 filter.flushe = sizeof(flushb);
aba5acdf
SH		 1285
1286 for (;;) {
1287 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1288 perror("Cannot send dump request");
1289 exit(1);
1290 }
1291 filter.flushed = 0;
cd70f3f5 1292 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
aba5acdf
SH		 1293 fprintf(stderr, "Flush terminated\n");
1294 exit(1);
1295 }
1296 if (filter.flushed == 0) {
f0b34d2d
AH		 1297 if (show_stats) {
1298 if (round == 0 && (!filter.cloned || do_ipv6 == AF_INET6))
1299 printf("Nothing to flush.\n");
1300 else
1301 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
1302 }
aba5acdf
SH		 1303 fflush(stdout);
1304 return 0;
1305 }
1306 round++;
1307 if (flush_update() < 0)
1308 exit(1);
33551240
SH		 1309
1310 if (time(0) - start > 30) {
1311 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1312 time(0) - start, filter.flushed);
1313 exit(1);
1314 }
1315
aba5acdf
SH		 1316 if (show_stats) {
1317 printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed);
1318 fflush(stdout);
1319 }
1320 }
1321 }
1322
bd4bcdad 1323 if (!filter.cloned) {
aba5acdf
SH		 1324 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1325 perror("Cannot send dump request");
1326 exit(1);
1327 }
1328 } else {
1329 if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
1330 perror("Cannot send dump request");
1331 exit(1);
1332 }
1333 }
1334
cd70f3f5 1335 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
aba5acdf
SH		 1336 fprintf(stderr, "Dump terminated\n");
1337 exit(1);
1338 }
1339
1340 exit(0);
1341}
1342
1343
1344int iproute_get(int argc, char **argv)
1345{
aba5acdf
SH		 1346 struct {
1347 struct nlmsghdr n;
1348 struct rtmsg r;
1349 char buf[1024];
1350 } req;
1351 char *idev = NULL;
1352 char *odev = NULL;
1353 int connected = 0;
1354 int from_ok = 0;
b0373bfb 1355 unsigned int mark = 0;
aba5acdf
SH		 1356
1357 memset(&req, 0, sizeof(req));
1358
1359 iproute_reset_filter();
c73f3e02 1360 filter.cloned = 2;
aba5acdf
SH		 1361
1362 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
1363 req.n.nlmsg_flags = NLM_F_REQUEST;
1364 req.n.nlmsg_type = RTM_GETROUTE;
1365 req.r.rtm_family = preferred_family;
1366 req.r.rtm_table = 0;
1367 req.r.rtm_protocol = 0;
1368 req.r.rtm_scope = 0;
1369 req.r.rtm_type = 0;
1370 req.r.rtm_src_len = 0;
1371 req.r.rtm_dst_len = 0;
1372 req.r.rtm_tos = 0;
ae665a52 1373
aba5acdf
SH		 1374 while (argc > 0) {
1375 if (strcmp(*argv, "tos") == 0 ||
1376 matches(*argv, "dsfield") == 0) {
1377 __u32 tos;
1378 NEXT_ARG();
1379 if (rtnl_dsfield_a2n(&tos, *argv))
1380 invarg("TOS value is invalid\n", *argv);
1381 req.r.rtm_tos = tos;
1382 } else if (matches(*argv, "from") == 0) {
1383 inet_prefix addr;
1384 NEXT_ARG();
1385 if (matches(*argv, "help") == 0)
1386 usage();
1387 from_ok = 1;
1388 get_prefix(&addr, *argv, req.r.rtm_family);
1389 if (req.r.rtm_family == AF_UNSPEC)
1390 req.r.rtm_family = addr.family;
1391 if (addr.bytelen)
1392 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
1393 req.r.rtm_src_len = addr.bitlen;
1394 } else if (matches(*argv, "iif") == 0) {
1395 NEXT_ARG();
1396 idev = *argv;
b0373bfb
ED		 1397 } else if (matches(*argv, "mark") == 0) {
1398 NEXT_ARG();
1399 get_unsigned(&mark, *argv, 0);
aba5acdf
SH		 1400 } else if (matches(*argv, "oif") == 0 ||
1401 strcmp(*argv, "dev") == 0) {
1402 NEXT_ARG();
1403 odev = *argv;
1404 } else if (matches(*argv, "notify") == 0) {
1405 req.r.rtm_flags |= RTM_F_NOTIFY;
1406 } else if (matches(*argv, "connected") == 0) {
1407 connected = 1;
1408 } else {
1409 inet_prefix addr;
1410 if (strcmp(*argv, "to") == 0) {
1411 NEXT_ARG();
1412 }
1413 if (matches(*argv, "help") == 0)
1414 usage();
1415 get_prefix(&addr, *argv, req.r.rtm_family);
1416 if (req.r.rtm_family == AF_UNSPEC)
1417 req.r.rtm_family = addr.family;
1418 if (addr.bytelen)
1419 addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
1420 req.r.rtm_dst_len = addr.bitlen;
1421 }
1422 argc--; argv++;
1423 }
1424
1425 if (req.r.rtm_dst_len == 0) {
1426 fprintf(stderr, "need at least destination address\n");
1427 exit(1);
1428 }
1429
aba5acdf
SH		 1430 ll_init_map(&rth);
1431
1432 if (idev || odev) {
1433 int idx;
1434
1435 if (idev) {
1436 if ((idx = ll_name_to_index(idev)) == 0) {
1437 fprintf(stderr, "Cannot find device \"%s\"\n", idev);
1438 return -1;
1439 }
1440 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
1441 }
1442 if (odev) {
1443 if ((idx = ll_name_to_index(odev)) == 0) {
1444 fprintf(stderr, "Cannot find device \"%s\"\n", odev);
1445 return -1;
1446 }
1447 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
1448 }
1449 }
b0373bfb
ED		 1450 if (mark)
1451 addattr32(&req.n, sizeof(req), RTA_MARK, mark);
aba5acdf
SH		 1452
1453 if (req.r.rtm_family == AF_UNSPEC)
1454 req.r.rtm_family = AF_INET;
1455
cd70f3f5 1456 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0)
aba5acdf
SH		 1457 exit(2);
1458
1459 if (connected && !from_ok) {
1460 struct rtmsg *r = NLMSG_DATA(&req.n);
1461 int len = req.n.nlmsg_len;
1462 struct rtattr * tb[RTA_MAX+1];
1463
1464 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1465 fprintf(stderr, "An error :-)\n");
1466 exit(1);
1467 }
1468
1469 if (req.n.nlmsg_type != RTM_NEWROUTE) {
1470 fprintf(stderr, "Not a route?\n");
1471 return -1;
1472 }
1473 len -= NLMSG_LENGTH(sizeof(*r));
1474 if (len < 0) {
1475 fprintf(stderr, "Wrong len %d\n", len);
1476 return -1;
1477 }
1478
aba5acdf
SH		 1479 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1480
1481 if (tb[RTA_PREFSRC]) {
1482 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
1483 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
1484 } else if (!tb[RTA_SRC]) {
1485 fprintf(stderr, "Failed to connect the route\n");
1486 return -1;
1487 }
1488 if (!odev && tb[RTA_OIF])
1489 tb[RTA_OIF]->rta_type = 0;
1490 if (tb[RTA_GATEWAY])
1491 tb[RTA_GATEWAY]->rta_type = 0;
1492 if (!idev && tb[RTA_IIF])
1493 tb[RTA_IIF]->rta_type = 0;
1494 req.n.nlmsg_flags = NLM_F_REQUEST;
1495 req.n.nlmsg_type = RTM_GETROUTE;
1496
cd70f3f5 1497 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0)
aba5acdf
SH		 1498 exit(2);
1499 }
1500
1501 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1502 fprintf(stderr, "An error :-)\n");
1503 exit(1);
1504 }
1505
1506 exit(0);
1507}
1508
f4ff11e3
DS		 1509int restore_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n, void *arg)
1510{
1511 int ret;
1512
1513 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
1514
1515 ll_init_map(&rth);
1516
cd70f3f5 1517 ret = rtnl_talk(&rth, n, 0, 0, n);
f4ff11e3
DS		 1518 if ((ret < 0) && (errno == EEXIST))
1519 ret = 0;
1520
1521 return ret;
1522}
1523
1524int iproute_restore(void)
1525{
1526 exit(rtnl_from_file(stdin, &restore_handler, NULL));
1527}
1528
aba5acdf
SH		 1529void iproute_reset_filter()
1530{
1531 memset(&filter, 0, sizeof(filter));
1532 filter.mdst.bitlen = -1;
1533 filter.msrc.bitlen = -1;
1534}
1535
1536int do_iproute(int argc, char **argv)
1537{
1538 if (argc < 1)
f4ff11e3 1539 return iproute_list_flush_or_save(0, NULL, IPROUTE_LIST);
ae665a52 1540
aba5acdf
SH		 1541 if (matches(*argv, "add") == 0)
1542 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
1543 argc-1, argv+1);
1544 if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
1545 return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
1546 argc-1, argv+1);
1547 if (matches(*argv, "replace") == 0)
1548 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
1549 argc-1, argv+1);
1550 if (matches(*argv, "prepend") == 0)
1551 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
1552 argc-1, argv+1);
1553 if (matches(*argv, "append") == 0)
1554 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
1555 argc-1, argv+1);
1556 if (matches(*argv, "test") == 0)
1557 return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
1558 argc-1, argv+1);
1559 if (matches(*argv, "delete") == 0)
1560 return iproute_modify(RTM_DELROUTE, 0,
1561 argc-1, argv+1);
1562 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1563 || matches(*argv, "lst") == 0)
f4ff11e3 1564 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_LIST);
aba5acdf
SH		 1565 if (matches(*argv, "get") == 0)
1566 return iproute_get(argc-1, argv+1);
1567 if (matches(*argv, "flush") == 0)
f4ff11e3
DS		 1568 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_FLUSH);
1569 if (matches(*argv, "save") == 0)
1570 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_SAVE);
1571 if (matches(*argv, "restore") == 0)
1572 return iproute_restore();
aba5acdf
SH		 1573 if (matches(*argv, "help") == 0)
1574 usage();
1575 fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
1576 exit(-1);
1577}
1578
Upstream mirror of iproute2