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aba5acdf
SH		 1/*
2 * iproute.c "ip route".
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 *
aba5acdf
SH		 11 */
12
13#include <stdio.h>
14#include <stdlib.h>
15#include <unistd.h>
16#include <syslog.h>
17#include <fcntl.h>
18#include <string.h>
33551240 19#include <time.h>
aba5acdf
SH		 20#include <sys/time.h>
21#include <sys/socket.h>
22#include <netinet/in.h>
23#include <netinet/ip.h>
24#include <arpa/inet.h>
25#include <linux/in_route.h>
194e9b85 26#include <linux/icmpv6.h>
f4ff11e3 27#include <errno.h>
aba5acdf
SH		 28
29#include "rt_names.h"
30#include "utils.h"
31#include "ip_common.h"
32
33#ifndef RTAX_RTTVAR
34#define RTAX_RTTVAR RTAX_HOPS
35#endif
36
f4ff11e3
DS		 37enum list_action {
38 IPROUTE_LIST,
39 IPROUTE_FLUSH,
40 IPROUTE_SAVE,
41};
f38c7334
SH		 42static const char *mx_names[RTAX_MAX+1] = {
43 [RTAX_MTU] = "mtu",
44 [RTAX_WINDOW] = "window",
45 [RTAX_RTT] = "rtt",
46 [RTAX_RTTVAR] = "rttvar",
47 [RTAX_SSTHRESH] = "ssthresh",
48 [RTAX_CWND] = "cwnd",
49 [RTAX_ADVMSS] = "advmss",
50 [RTAX_REORDERING]="reordering",
51 [RTAX_HOPLIMIT] = "hoplimit",
52 [RTAX_INITCWND] = "initcwnd",
53 [RTAX_FEATURES] = "features",
54e0b2e7 54 [RTAX_RTO_MIN] = "rto_min",
f5fd8003 55 [RTAX_INITRWND] = "initrwnd",
b37f2c89 56 [RTAX_QUICKACK] = "quickack",
6ef87f9c 57 [RTAX_CC_ALGO] = "congctl",
f38c7334 58};
aba5acdf
SH		 59static void usage(void) __attribute__((noreturn));
60
61static void usage(void)
62{
63 fprintf(stderr, "Usage: ip route { list | flush } SELECTOR\n");
f4ff11e3
DS		 64 fprintf(stderr, " ip route save SELECTOR\n");
65 fprintf(stderr, " ip route restore\n");
93b79863 66 fprintf(stderr, " ip route showdump\n");
aba5acdf 67 fprintf(stderr, " ip route get ADDRESS [ from ADDRESS iif STRING ]\n");
8f480637 68 fprintf(stderr, " [ oif STRING ] [ tos TOS ]\n");
b0373bfb 69 fprintf(stderr, " [ mark NUMBER ]\n");
c0c44bfe 70 fprintf(stderr, " ip route { add | del | change | append | replace } ROUTE\n");
aba5acdf
SH		 71 fprintf(stderr, "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n");
72 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
73 fprintf(stderr, " [ type TYPE ] [ scope SCOPE ]\n");
74 fprintf(stderr, "ROUTE := NODE_SPEC [ INFO_SPEC ]\n");
75 fprintf(stderr, "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n");
76 fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
77 fprintf(stderr, " [ scope SCOPE ] [ metric METRIC ]\n");
78 fprintf(stderr, "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n");
93ae2835 79 fprintf(stderr, "NH := [ via [ FAMILY ] ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS\n");
38a7f268 80 fprintf(stderr, "FAMILY := [ inet | inet6 | ipx | dnet | mpls | bridge | link ]\n");
6f7a9f4d 81 fprintf(stderr, "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]\n");
8f480637 82 fprintf(stderr, " [ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]\n");
a1f1143e 83 fprintf(stderr, " [ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n");
576c63ee 84 fprintf(stderr, " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n");
f5fd8003 85 fprintf(stderr, " [ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]\n");
6ef87f9c 86 fprintf(stderr, " [ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]\n");
194e9b85 87 fprintf(stderr, " [ pref PREF ]\n");
aba5acdf
SH		 88 fprintf(stderr, "TYPE := [ unicast | local | broadcast | multicast | throw |\n");
89 fprintf(stderr, " unreachable | prohibit | blackhole | nat ]\n");
90 fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n");
91 fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n");
aba5acdf
SH		 92 fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n");
93 fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n");
194e9b85 94 fprintf(stderr, "PREF := [ low | medium | high ]\n");
9b2cdc00 95 fprintf(stderr, "TIME := NUMBER[s|ms]\n");
b37f2c89 96 fprintf(stderr, "BOOL := [1|0]\n");
29d1f730 97 fprintf(stderr, "FEATURES := ecn\n");
aba5acdf
SH		 98 exit(-1);
99}
100
101
102static struct
103{
caae16b3 104 unsigned int tb;
bd4bcdad 105 int cloned;
aba5acdf
SH		 106 int flushed;
107 char *flushb;
108 int flushp;
109 int flushe;
aba5acdf
SH		 110 int protocol, protocolmask;
111 int scope, scopemask;
112 int type, typemask;
113 int tos, tosmask;
114 int iif, iifmask;
115 int oif, oifmask;
b0373bfb 116 int mark, markmask;
aba5acdf
SH		 117 int realm, realmmask;
118 inet_prefix rprefsrc;
119 inet_prefix rvia;
120 inet_prefix rdst;
121 inet_prefix mdst;
122 inet_prefix rsrc;
123 inet_prefix msrc;
124} filter;
125
126static int flush_update(void)
127{
f31a37f7 128 if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
1fb0a998 129 perror("Failed to send flush request");
aba5acdf
SH		 130 return -1;
131 }
132 filter.flushp = 0;
133 return 0;
134}
135
d1f28cf1 136static int filter_nlmsg(struct nlmsghdr *n, struct rtattr **tb, int host_len)
aba5acdf 137{
aba5acdf 138 struct rtmsg *r = NLMSG_DATA(n);
aba5acdf
SH		 139 inet_prefix dst;
140 inet_prefix src;
aba5acdf 141 inet_prefix via;
f4ff11e3 142 inet_prefix prefsrc;
34e95647 143 __u32 table;
f4ff11e3 144 static int ip6_multiple_tables;
aba5acdf 145
34e95647
PM		 146 table = rtm_get_table(r, tb);
147
5b9ac190
AV		 148 if (preferred_family != AF_UNSPEC && r->rtm_family != preferred_family)
149 return 0;
150
34e95647 151 if (r->rtm_family == AF_INET6 && table != RT_TABLE_MAIN)
e0b29fe7
PM		 152 ip6_multiple_tables = 1;
153
44792827
UW		 154 if (filter.cloned == !(r->rtm_flags&RTM_F_CLONED))
155 return 0;
156
e0b29fe7 157 if (r->rtm_family == AF_INET6 && !ip6_multiple_tables) {
aba5acdf 158 if (filter.tb) {
bd4bcdad
PM		 159 if (filter.tb == RT_TABLE_LOCAL) {
160 if (r->rtm_type != RTN_LOCAL)
aba5acdf 161 return 0;
bd4bcdad
PM		 162 } else if (filter.tb == RT_TABLE_MAIN) {
163 if (r->rtm_type == RTN_LOCAL)
aba5acdf 164 return 0;
bd4bcdad
PM		 165 } else {
166 return 0;
aba5acdf
SH		 167 }
168 }
169 } else {
34e95647 170 if (filter.tb > 0 && filter.tb != table)
aba5acdf
SH		 171 return 0;
172 }
173 if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
174 return 0;
175 if ((filter.scope^r->rtm_scope)&filter.scopemask)
176 return 0;
177 if ((filter.type^r->rtm_type)&filter.typemask)
178 return 0;
179 if ((filter.tos^r->rtm_tos)&filter.tosmask)
180 return 0;
181 if (filter.rdst.family &&
182 (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len))
183 return 0;
184 if (filter.mdst.family &&
185 (r->rtm_family != filter.mdst.family ||
186 (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len)))
187 return 0;
188 if (filter.rsrc.family &&
189 (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len))
190 return 0;
191 if (filter.msrc.family &&
192 (r->rtm_family != filter.msrc.family ||
193 (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len)))
194 return 0;
93ae2835
EB		 195 if (filter.rvia.family) {
196 int family = r->rtm_family;
197 if (tb[RTA_VIA]) {
198 struct rtvia *via = RTA_DATA(tb[RTA_VIA]);
199 family = via->rtvia_family;
200 }
201 if (family != filter.rvia.family)
202 return 0;
203 }
aba5acdf
SH		 204 if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
205 return 0;
206
aba5acdf
SH		 207 memset(&dst, 0, sizeof(dst));
208 dst.family = r->rtm_family;
209 if (tb[RTA_DST])
210 memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
211 if (filter.rsrc.family || filter.msrc.family) {
212 memset(&src, 0, sizeof(src));
213 src.family = r->rtm_family;
214 if (tb[RTA_SRC])
215 memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
216 }
217 if (filter.rvia.bitlen>0) {
218 memset(&via, 0, sizeof(via));
219 via.family = r->rtm_family;
220 if (tb[RTA_GATEWAY])
7849fb55 221 memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len/8);
93ae2835
EB		 222 if (tb[RTA_VIA]) {
223 size_t len = RTA_PAYLOAD(tb[RTA_VIA]) - 2;
224 struct rtvia *rtvia = RTA_DATA(tb[RTA_VIA]);
225 via.family = rtvia->rtvia_family;
226 memcpy(&via.data, rtvia->rtvia_addr, len);
227 }
aba5acdf
SH		 228 }
229 if (filter.rprefsrc.bitlen>0) {
230 memset(&prefsrc, 0, sizeof(prefsrc));
231 prefsrc.family = r->rtm_family;
232 if (tb[RTA_PREFSRC])
7849fb55 233 memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len/8);
aba5acdf
SH		 234 }
235
236 if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
237 return 0;
238 if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
239 inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
240 return 0;
241
242 if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
243 return 0;
244 if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
245 inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
246 return 0;
247
248 if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
249 return 0;
250 if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
251 return 0;
252 if (filter.realmmask) {
253 __u32 realms = 0;
254 if (tb[RTA_FLOW])
ff24746c 255 realms = rta_getattr_u32(tb[RTA_FLOW]);
aba5acdf
SH		 256 if ((realms^filter.realm)&filter.realmmask)
257 return 0;
258 }
259 if (filter.iifmask) {
260 int iif = 0;
261 if (tb[RTA_IIF])
262 iif = *(int*)RTA_DATA(tb[RTA_IIF]);
263 if ((iif^filter.iif)&filter.iifmask)
264 return 0;
265 }
266 if (filter.oifmask) {
267 int oif = 0;
268 if (tb[RTA_OIF])
269 oif = *(int*)RTA_DATA(tb[RTA_OIF]);
270 if ((oif^filter.oif)&filter.oifmask)
271 return 0;
272 }
b0373bfb
ED		 273 if (filter.markmask) {
274 int mark = 0;
275 if (tb[RTA_MARK])
276 mark = *(int *)RTA_DATA(tb[RTA_MARK]);
277 if ((mark ^ filter.mark) & filter.markmask)
278 return 0;
279 }
ae665a52 280 if (filter.flushb &&
aba5acdf
SH		 281 r->rtm_family == AF_INET6 &&
282 r->rtm_dst_len == 0 &&
283 r->rtm_type == RTN_UNREACHABLE &&
284 tb[RTA_PRIORITY] &&
285 *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
286 return 0;
287
f4ff11e3
DS		 288 return 1;
289}
290
29d1f730
FW		 291static void print_rtax_features(FILE *fp, unsigned int features)
292{
293 unsigned int of = features;
294
295 if (features & RTAX_FEATURE_ECN) {
296 fprintf(fp, " ecn");
297 features &= ~RTAX_FEATURE_ECN;
298 }
299
300 if (features)
301 fprintf(fp, " 0x%x", of);
302}
303
f4ff11e3
DS		 304int print_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
305{
306 FILE *fp = (FILE*)arg;
307 struct rtmsg *r = NLMSG_DATA(n);
308 int len = n->nlmsg_len;
309 struct rtattr * tb[RTA_MAX+1];
310 char abuf[256];
f3a2ddc1 311 int host_len;
f4ff11e3
DS		 312 __u32 table;
313 SPRINT_BUF(b1);
314 static int hz;
315
316 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
317 fprintf(stderr, "Not a route: %08x %08x %08x\n",
318 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
319 return 0;
320 }
321 if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
322 return 0;
323 len -= NLMSG_LENGTH(sizeof(*r));
324 if (len < 0) {
325 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
326 return -1;
327 }
328
f3a2ddc1 329 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 330
331 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
332 table = rtm_get_table(r, tb);
333
334 if (!filter_nlmsg(n, tb, host_len))
335 return 0;
336
aba5acdf
SH		 337 if (filter.flushb) {
338 struct nlmsghdr *fn;
339 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
340 if (flush_update())
341 return -1;
342 }
343 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
344 memcpy(fn, n, n->nlmsg_len);
345 fn->nlmsg_type = RTM_DELROUTE;
346 fn->nlmsg_flags = NLM_F_REQUEST;
351efcde 347 fn->nlmsg_seq = ++rth.seq;
aba5acdf
SH		 348 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
349 filter.flushed++;
350 if (show_stats < 2)
351 return 0;
352 }
353
354 if (n->nlmsg_type == RTM_DELROUTE)
355 fprintf(fp, "Deleted ");
577e5a53 356 if ((r->rtm_type != RTN_UNICAST || show_details > 0) && !filter.type)
aba5acdf
SH		 357 fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
358
359 if (tb[RTA_DST]) {
360 if (r->rtm_dst_len != host_len) {
361 fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family,
26dcdf3a
EB		 362 RTA_PAYLOAD(tb[RTA_DST]),
363 RTA_DATA(tb[RTA_DST]),
364 abuf, sizeof(abuf)),
aba5acdf
SH		 365 r->rtm_dst_len
366 );
367 } else {
368 fprintf(fp, "%s ", format_host(r->rtm_family,
369 RTA_PAYLOAD(tb[RTA_DST]),
370 RTA_DATA(tb[RTA_DST]),
371 abuf, sizeof(abuf))
372 );
373 }
374 } else if (r->rtm_dst_len) {
375 fprintf(fp, "0/%d ", r->rtm_dst_len);
376 } else {
377 fprintf(fp, "default ");
378 }
379 if (tb[RTA_SRC]) {
380 if (r->rtm_src_len != host_len) {
381 fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family,
26dcdf3a
EB		 382 RTA_PAYLOAD(tb[RTA_SRC]),
383 RTA_DATA(tb[RTA_SRC]),
384 abuf, sizeof(abuf)),
aba5acdf
SH		 385 r->rtm_src_len
386 );
387 } else {
388 fprintf(fp, "from %s ", format_host(r->rtm_family,
389 RTA_PAYLOAD(tb[RTA_SRC]),
390 RTA_DATA(tb[RTA_SRC]),
391 abuf, sizeof(abuf))
392 );
393 }
394 } else if (r->rtm_src_len) {
395 fprintf(fp, "from 0/%u ", r->rtm_src_len);
396 }
6f7a9f4d
EB		 397 if (tb[RTA_NEWDST]) {
398 fprintf(fp, "as to %s ", format_host(r->rtm_family,
399 RTA_PAYLOAD(tb[RTA_NEWDST]),
400 RTA_DATA(tb[RTA_NEWDST]),
401 abuf, sizeof(abuf))
402 );
403 }
aba5acdf
SH		 404 if (r->rtm_tos && filter.tosmask != -1) {
405 SPRINT_BUF(b1);
406 fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
407 }
02d2ae55 408
aba5acdf 409 if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
ae665a52 410 fprintf(fp, "via %s ",
aba5acdf
SH		 411 format_host(r->rtm_family,
412 RTA_PAYLOAD(tb[RTA_GATEWAY]),
413 RTA_DATA(tb[RTA_GATEWAY]),
414 abuf, sizeof(abuf)));
415 }
93ae2835
EB		 416 if (tb[RTA_VIA]) {
417 size_t len = RTA_PAYLOAD(tb[RTA_VIA]) - 2;
418 struct rtvia *via = RTA_DATA(tb[RTA_VIA]);
419 fprintf(fp, "via %s %s ",
420 family_name(via->rtvia_family),
421 format_host(via->rtvia_family, len, via->rtvia_addr,
422 abuf, sizeof(abuf)));
423 }
aba5acdf
SH		 424 if (tb[RTA_OIF] && filter.oifmask != -1)
425 fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
426
427 if (!(r->rtm_flags&RTM_F_CLONED)) {
577e5a53 428 if ((table != RT_TABLE_MAIN || show_details > 0) && !filter.tb)
34e95647 429 fprintf(fp, " table %s ", rtnl_rttable_n2a(table, b1, sizeof(b1)));
577e5a53 430 if ((r->rtm_protocol != RTPROT_BOOT || show_details > 0) && filter.protocolmask != -1)
aba5acdf 431 fprintf(fp, " proto %s ", rtnl_rtprot_n2a(r->rtm_protocol, b1, sizeof(b1)));
577e5a53 432 if ((r->rtm_scope != RT_SCOPE_UNIVERSE || show_details > 0) && filter.scopemask != -1)
aba5acdf
SH		 433 fprintf(fp, " scope %s ", rtnl_rtscope_n2a(r->rtm_scope, b1, sizeof(b1)));
434 }
435 if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
436 /* Do not use format_host(). It is our local addr
437 and symbolic name will not be useful.
438 */
ae665a52 439 fprintf(fp, " src %s ",
aba5acdf 440 rt_addr_n2a(r->rtm_family,
26dcdf3a 441 RTA_PAYLOAD(tb[RTA_PREFSRC]),
aba5acdf
SH		 442 RTA_DATA(tb[RTA_PREFSRC]),
443 abuf, sizeof(abuf)));
444 }
445 if (tb[RTA_PRIORITY])
ff24746c 446 fprintf(fp, " metric %u ", rta_getattr_u32(tb[RTA_PRIORITY]));
aba5acdf
SH		 447 if (r->rtm_flags & RTNH_F_DEAD)
448 fprintf(fp, "dead ");
449 if (r->rtm_flags & RTNH_F_ONLINK)
450 fprintf(fp, "onlink ");
451 if (r->rtm_flags & RTNH_F_PERVASIVE)
452 fprintf(fp, "pervasive ");
c52827e9 453 if (r->rtm_flags & RTNH_F_OFFLOAD)
aa05b988 454 fprintf(fp, "offload ");
aba5acdf
SH		 455 if (r->rtm_flags & RTM_F_NOTIFY)
456 fprintf(fp, "notify ");
528c2551
AG		 457 if (r->rtm_flags & RTNH_F_LINKDOWN)
458 fprintf(fp, "linkdown ");
b0373bfb
ED		 459 if (tb[RTA_MARK]) {
460 unsigned int mark = *(unsigned int*)RTA_DATA(tb[RTA_MARK]);
461 if (mark) {
462 if (mark >= 16)
463 fprintf(fp, " mark 0x%x", mark);
464 else
465 fprintf(fp, " mark %u", mark);
466 }
467 }
aba5acdf
SH		 468
469 if (tb[RTA_FLOW] && filter.realmmask != ~0U) {
ff24746c 470 __u32 to = rta_getattr_u32(tb[RTA_FLOW]);
aba5acdf
SH		 471 __u32 from = to>>16;
472 to &= 0xFFFF;
473 fprintf(fp, "realm%s ", from ? "s" : "");
474 if (from) {
475 fprintf(fp, "%s/",
476 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
477 }
478 fprintf(fp, "%s ",
479 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
480 }
481 if ((r->rtm_flags&RTM_F_CLONED) && r->rtm_family == AF_INET) {
482 __u32 flags = r->rtm_flags&~0xFFFF;
483 int first = 1;
484
485 fprintf(fp, "%s cache ", _SL_);
486
487#define PRTFL(fl,flname) if (flags&RTCF_##fl) { \
488 flags &= ~RTCF_##fl; \
489 fprintf(fp, "%s" flname "%s", first ? "<" : "", flags ? "," : "> "); \
490 first = 0; }
491 PRTFL(LOCAL, "local");
492 PRTFL(REJECT, "reject");
493 PRTFL(MULTICAST, "mc");
494 PRTFL(BROADCAST, "brd");
495 PRTFL(DNAT, "dst-nat");
496 PRTFL(SNAT, "src-nat");
497 PRTFL(MASQ, "masq");
498 PRTFL(DIRECTDST, "dst-direct");
499 PRTFL(DIRECTSRC, "src-direct");
500 PRTFL(REDIRECTED, "redirected");
501 PRTFL(DOREDIRECT, "redirect");
502 PRTFL(FAST, "fastroute");
503 PRTFL(NOTIFY, "notify");
504 PRTFL(TPROXY, "proxy");
63a0f20a 505
aba5acdf
SH		 506 if (flags)
507 fprintf(fp, "%s%x> ", first ? "<" : "", flags);
508 if (tb[RTA_CACHEINFO]) {
509 struct rta_cacheinfo *ci = RTA_DATA(tb[RTA_CACHEINFO]);
aba5acdf 510 if (!hz)
5e8bc631 511 hz = get_user_hz();
aba5acdf
SH		 512 if (ci->rta_expires != 0)
513 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
514 if (ci->rta_error != 0)
515 fprintf(fp, " error %d", ci->rta_error);
516 if (show_stats) {
517 if (ci->rta_clntref)
518 fprintf(fp, " users %d", ci->rta_clntref);
519 if (ci->rta_used != 0)
520 fprintf(fp, " used %d", ci->rta_used);
521 if (ci->rta_lastuse != 0)
522 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
523 }
aba5acdf
SH		 524 if (ci->rta_id)
525 fprintf(fp, " ipid 0x%04x", ci->rta_id);
526 if (ci->rta_ts || ci->rta_tsage)
d5b7420a
SH		 527 fprintf(fp, " ts 0x%x tsage %dsec",
528 ci->rta_ts, ci->rta_tsage);
aba5acdf
SH		 529 }
530 } else if (r->rtm_family == AF_INET6) {
531 struct rta_cacheinfo *ci = NULL;
532 if (tb[RTA_CACHEINFO])
533 ci = RTA_DATA(tb[RTA_CACHEINFO]);
534 if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
aba5acdf 535 if (!hz)
5e8bc631 536 hz = get_user_hz();
aba5acdf
SH		 537 if (r->rtm_flags & RTM_F_CLONED)
538 fprintf(fp, "%s cache ", _SL_);
539 if (ci->rta_expires)
540 fprintf(fp, " expires %dsec", ci->rta_expires/hz);
541 if (ci->rta_error != 0)
542 fprintf(fp, " error %d", ci->rta_error);
543 if (show_stats) {
544 if (ci->rta_clntref)
545 fprintf(fp, " users %d", ci->rta_clntref);
546 if (ci->rta_used != 0)
547 fprintf(fp, " used %d", ci->rta_used);
548 if (ci->rta_lastuse != 0)
549 fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
550 }
551 } else if (ci) {
552 if (ci->rta_error != 0)
553 fprintf(fp, " error %d", ci->rta_error);
554 }
555 }
556 if (tb[RTA_METRICS]) {
557 int i;
558 unsigned mxlock = 0;
559 struct rtattr *mxrta[RTAX_MAX+1];
560
aba5acdf
SH		 561 parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(tb[RTA_METRICS]),
562 RTA_PAYLOAD(tb[RTA_METRICS]));
563 if (mxrta[RTAX_LOCK])
564 mxlock = *(unsigned*)RTA_DATA(mxrta[RTAX_LOCK]);
565
f38c7334 566 for (i=2; i<= RTAX_MAX; i++) {
6ef87f9c 567 __u32 val;
ced61d7d 568
aba5acdf
SH		 569 if (mxrta[i] == NULL)
570 continue;
6a79240b
SH		 571
572 if (i < sizeof(mx_names)/sizeof(char*) && mx_names[i])
573 fprintf(fp, " %s", mx_names[i]);
aba5acdf 574 else
5e8bc631 575 fprintf(fp, " metric %d", i);
6ef87f9c 576
aba5acdf
SH		 577 if (mxlock & (1<<i))
578 fprintf(fp, " lock");
6ef87f9c
DB		 579 if (i != RTAX_CC_ALGO)
580 val = rta_getattr_u32(mxrta[i]);
aba5acdf 581
ced61d7d 582 switch (i) {
29d1f730
FW		 583 case RTAX_FEATURES:
584 print_rtax_features(fp, val);
585 break;
ced61d7d 586 case RTAX_HOPLIMIT:
62011a0b 587 if ((int)val == -1)
ced61d7d
SH		 588 val = 0;
589 /* fall through */
590 default:
591 fprintf(fp, " %u", val);
592 break;
aba5acdf 593
ced61d7d
SH		 594 case RTAX_RTT:
595 case RTAX_RTTVAR:
596 case RTAX_RTO_MIN:
aba5acdf
SH		 597 if (i == RTAX_RTT)
598 val /= 8;
54e0b2e7 599 else if (i == RTAX_RTTVAR)
aba5acdf 600 val /= 4;
ced61d7d 601
9b2cdc00
GR		 602 if (val >= 1000)
603 fprintf(fp, " %gs", val/1e3);
aba5acdf 604 else
9b2cdc00 605 fprintf(fp, " %ums", val);
6ef87f9c
DB		 606 break;
607 case RTAX_CC_ALGO:
608 fprintf(fp, " %s", rta_getattr_str(mxrta[i]));
609 break;
aba5acdf
SH		 610 }
611 }
612 }
613 if (tb[RTA_IIF] && filter.iifmask != -1) {
614 fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
615 }
616 if (tb[RTA_MULTIPATH]) {
617 struct rtnexthop *nh = RTA_DATA(tb[RTA_MULTIPATH]);
618 int first = 0;
619
620 len = RTA_PAYLOAD(tb[RTA_MULTIPATH]);
621
622 for (;;) {
623 if (len < sizeof(*nh))
624 break;
625 if (nh->rtnh_len > len)
626 break;
627 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
628 if (first)
629 fprintf(fp, " Oifs:");
630 else
631 fprintf(fp, " ");
632 } else
633 fprintf(fp, "%s\tnexthop", _SL_);
634 if (nh->rtnh_len > sizeof(*nh)) {
aba5acdf
SH		 635 parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh), nh->rtnh_len - sizeof(*nh));
636 if (tb[RTA_GATEWAY]) {
ae665a52 637 fprintf(fp, " via %s ",
aba5acdf
SH		 638 format_host(r->rtm_family,
639 RTA_PAYLOAD(tb[RTA_GATEWAY]),
640 RTA_DATA(tb[RTA_GATEWAY]),
641 abuf, sizeof(abuf)));
642 }
93ae2835
EB		 643 if (tb[RTA_VIA]) {
644 size_t len = RTA_PAYLOAD(tb[RTA_VIA]) - 2;
645 struct rtvia *via = RTA_DATA(tb[RTA_VIA]);
646 fprintf(fp, "via %s %s ",
647 family_name(via->rtvia_family),
648 format_host(via->rtvia_family, len, via->rtvia_addr,
649 abuf, sizeof(abuf)));
650 }
f4f6d640 651 if (tb[RTA_FLOW]) {
ff24746c 652 __u32 to = rta_getattr_u32(tb[RTA_FLOW]);
f4f6d640
PM		 653 __u32 from = to>>16;
654 to &= 0xFFFF;
655 fprintf(fp, " realm%s ", from ? "s" : "");
656 if (from) {
657 fprintf(fp, "%s/",
658 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
659 }
660 fprintf(fp, "%s",
661 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
662 }
aba5acdf
SH		 663 }
664 if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
665 fprintf(fp, " %s", ll_index_to_name(nh->rtnh_ifindex));
666 if (nh->rtnh_hops != 1)
667 fprintf(fp, "(ttl>%d)", nh->rtnh_hops);
668 } else {
669 fprintf(fp, " dev %s", ll_index_to_name(nh->rtnh_ifindex));
670 fprintf(fp, " weight %d", nh->rtnh_hops+1);
671 }
672 if (nh->rtnh_flags & RTNH_F_DEAD)
673 fprintf(fp, " dead");
674 if (nh->rtnh_flags & RTNH_F_ONLINK)
675 fprintf(fp, " onlink");
676 if (nh->rtnh_flags & RTNH_F_PERVASIVE)
677 fprintf(fp, " pervasive");
528c2551
AG		 678 if (nh->rtnh_flags & RTNH_F_LINKDOWN)
679 fprintf(fp, " linkdown");
aba5acdf
SH		 680 len -= NLMSG_ALIGN(nh->rtnh_len);
681 nh = RTNH_NEXT(nh);
682 }
683 }
194e9b85
LR		 684 if (tb[RTA_PREF]) {
685 unsigned int pref = rta_getattr_u8(tb[RTA_PREF]);
686 fprintf(fp, " pref ");
687
688 switch (pref) {
689 case ICMPV6_ROUTER_PREF_LOW:
690 fprintf(fp, "low");
691 break;
692 case ICMPV6_ROUTER_PREF_MEDIUM:
693 fprintf(fp, "medium");
694 break;
695 case ICMPV6_ROUTER_PREF_HIGH:
696 fprintf(fp, "high");
697 break;
698 default:
699 fprintf(fp, "%u", pref);
700 }
701 }
aba5acdf
SH		 702 fprintf(fp, "\n");
703 fflush(fp);
704 return 0;
705}
706
707
d1f28cf1
SH		 708static int parse_one_nh(struct rtmsg *r, struct rtattr *rta,
709 struct rtnexthop *rtnh,
710 int *argcp, char ***argvp)
aba5acdf
SH		 711{
712 int argc = *argcp;
713 char **argv = *argvp;
714
715 while (++argv, --argc > 0) {
716 if (strcmp(*argv, "via") == 0) {
4d6c3796 717 inet_prefix addr;
93ae2835 718 int family;
aba5acdf 719 NEXT_ARG();
93ae2835
EB		 720 family = read_family(*argv);
721 if (family == AF_UNSPEC)
722 family = r->rtm_family;
723 else
724 NEXT_ARG();
725 get_addr(&addr, *argv, family);
4d6c3796
VB		 726 if (r->rtm_family == AF_UNSPEC)
727 r->rtm_family = addr.family;
93ae2835
EB		 728 if (addr.family == r->rtm_family) {
729 rta_addattr_l(rta, 4096, RTA_GATEWAY, &addr.data, addr.bytelen);
730 rtnh->rtnh_len += sizeof(struct rtattr) + addr.bytelen;
731 } else {
732 rta_addattr_l(rta, 4096, RTA_VIA, &addr.family, addr.bytelen+2);
733 rtnh->rtnh_len += sizeof(struct rtattr) + addr.bytelen+2;
734 }
aba5acdf
SH		 735 } else if (strcmp(*argv, "dev") == 0) {
736 NEXT_ARG();
737 if ((rtnh->rtnh_ifindex = ll_name_to_index(*argv)) == 0) {
738 fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
739 exit(1);
740 }
741 } else if (strcmp(*argv, "weight") == 0) {
742 unsigned w;
743 NEXT_ARG();
744 if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
745 invarg("\"weight\" is invalid\n", *argv);
746 rtnh->rtnh_hops = w - 1;
747 } else if (strcmp(*argv, "onlink") == 0) {
748 rtnh->rtnh_flags |= RTNH_F_ONLINK;
f4f6d640
PM		 749 } else if (matches(*argv, "realms") == 0) {
750 __u32 realm;
751 NEXT_ARG();
752 if (get_rt_realms(&realm, *argv))
753 invarg("\"realm\" value is invalid\n", *argv);
754 rta_addattr32(rta, 4096, RTA_FLOW, realm);
755 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
aba5acdf
SH		 756 } else
757 break;
758 }
759 *argcp = argc;
760 *argvp = argv;
761 return 0;
762}
763
d1f28cf1
SH		 764static int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r,
765 int argc, char **argv)
aba5acdf
SH		 766{
767 char buf[1024];
768 struct rtattr *rta = (void*)buf;
769 struct rtnexthop *rtnh;
770
771 rta->rta_type = RTA_MULTIPATH;
772 rta->rta_len = RTA_LENGTH(0);
773 rtnh = RTA_DATA(rta);
774
775 while (argc > 0) {
776 if (strcmp(*argv, "nexthop") != 0) {
777 fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
778 exit(-1);
779 }
780 if (argc <= 1) {
781 fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
782 exit(-1);
783 }
784 memset(rtnh, 0, sizeof(*rtnh));
785 rtnh->rtnh_len = sizeof(*rtnh);
786 rta->rta_len += rtnh->rtnh_len;
4d6c3796 787 parse_one_nh(r, rta, rtnh, &argc, &argv);
aba5acdf
SH		 788 rtnh = RTNH_NEXT(rtnh);
789 }
790
791 if (rta->rta_len > RTA_LENGTH(0))
792 addattr_l(n, 1024, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta));
793 return 0;
794}
795
d1f28cf1 796static int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
aba5acdf 797{
aba5acdf 798 struct {
4806867a
SH		 799 struct nlmsghdr n;
800 struct rtmsg r;
801 char buf[1024];
aba5acdf
SH		 802 } req;
803 char mxbuf[256];
804 struct rtattr * mxrta = (void*)mxbuf;
805 unsigned mxlock = 0;
806 char *d = NULL;
807 int gw_ok = 0;
808 int dst_ok = 0;
809 int nhs_ok = 0;
810 int scope_ok = 0;
811 int table_ok = 0;
54e0b2e7 812 int raw = 0;
f638e9f7 813 int type_ok = 0;
aba5acdf
SH		 814
815 memset(&req, 0, sizeof(req));
816
817 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
818 req.n.nlmsg_flags = NLM_F_REQUEST|flags;
819 req.n.nlmsg_type = cmd;
820 req.r.rtm_family = preferred_family;
821 req.r.rtm_table = RT_TABLE_MAIN;
822 req.r.rtm_scope = RT_SCOPE_NOWHERE;
823
824 if (cmd != RTM_DELROUTE) {
825 req.r.rtm_protocol = RTPROT_BOOT;
826 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
827 req.r.rtm_type = RTN_UNICAST;
828 }
829
830 mxrta->rta_type = RTA_METRICS;
831 mxrta->rta_len = RTA_LENGTH(0);
832
833 while (argc > 0) {
834 if (strcmp(*argv, "src") == 0) {
835 inet_prefix addr;
836 NEXT_ARG();
837 get_addr(&addr, *argv, req.r.rtm_family);
838 if (req.r.rtm_family == AF_UNSPEC)
839 req.r.rtm_family = addr.family;
840 addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
6f7a9f4d
EB		 841 } else if (strcmp(*argv, "as") == 0) {
842 inet_prefix addr;
843 NEXT_ARG();
844 if (strcmp(*argv, "to") == 0) {
845 NEXT_ARG();
846 }
847 get_addr(&addr, *argv, req.r.rtm_family);
848 if (req.r.rtm_family == AF_UNSPEC)
849 req.r.rtm_family = addr.family;
850 addattr_l(&req.n, sizeof(req), RTA_NEWDST, &addr.data, addr.bytelen);
aba5acdf
SH		 851 } else if (strcmp(*argv, "via") == 0) {
852 inet_prefix addr;
93ae2835 853 int family;
aba5acdf
SH		 854 gw_ok = 1;
855 NEXT_ARG();
93ae2835
EB		 856 family = read_family(*argv);
857 if (family == AF_UNSPEC)
858 family = req.r.rtm_family;
859 else
860 NEXT_ARG();
861 get_addr(&addr, *argv, family);
aba5acdf
SH		 862 if (req.r.rtm_family == AF_UNSPEC)
863 req.r.rtm_family = addr.family;
93ae2835
EB		 864 if (addr.family == req.r.rtm_family)
865 addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
866 else
867 addattr_l(&req.n, sizeof(req), RTA_VIA, &addr.family, addr.bytelen+2);
aba5acdf
SH		 868 } else if (strcmp(*argv, "from") == 0) {
869 inet_prefix addr;
870 NEXT_ARG();
871 get_prefix(&addr, *argv, req.r.rtm_family);
872 if (req.r.rtm_family == AF_UNSPEC)
873 req.r.rtm_family = addr.family;
874 if (addr.bytelen)
875 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
876 req.r.rtm_src_len = addr.bitlen;
877 } else if (strcmp(*argv, "tos") == 0 ||
878 matches(*argv, "dsfield") == 0) {
879 __u32 tos;
880 NEXT_ARG();
881 if (rtnl_dsfield_a2n(&tos, *argv))
882 invarg("\"tos\" value is invalid\n", *argv);
883 req.r.rtm_tos = tos;
884 } else if (matches(*argv, "metric") == 0 ||
885 matches(*argv, "priority") == 0 ||
194e9b85 886 strcmp(*argv, "preference") == 0) {
aba5acdf
SH		 887 __u32 metric;
888 NEXT_ARG();
889 if (get_u32(&metric, *argv, 0))
890 invarg("\"metric\" value is invalid\n", *argv);
891 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
892 } else if (strcmp(*argv, "scope") == 0) {
f332d169 893 __u32 scope = 0;
aba5acdf
SH		 894 NEXT_ARG();
895 if (rtnl_rtscope_a2n(&scope, *argv))
896 invarg("invalid \"scope\" value\n", *argv);
897 req.r.rtm_scope = scope;
898 scope_ok = 1;
899 } else if (strcmp(*argv, "mtu") == 0) {
900 unsigned mtu;
901 NEXT_ARG();
902 if (strcmp(*argv, "lock") == 0) {
903 mxlock |= (1<<RTAX_MTU);
904 NEXT_ARG();
905 }
906 if (get_unsigned(&mtu, *argv, 0))
907 invarg("\"mtu\" value is invalid\n", *argv);
908 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
71e58151
GBY		 909 } else if (strcmp(*argv, "hoplimit") == 0) {
910 unsigned hoplimit;
911 NEXT_ARG();
912 if (strcmp(*argv, "lock") == 0) {
913 mxlock |= (1<<RTAX_HOPLIMIT);
914 NEXT_ARG();
915 }
916 if (get_unsigned(&hoplimit, *argv, 0))
917 invarg("\"hoplimit\" value is invalid\n", *argv);
918 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit);
aba5acdf
SH		 919 } else if (strcmp(*argv, "advmss") == 0) {
920 unsigned mss;
921 NEXT_ARG();
922 if (strcmp(*argv, "lock") == 0) {
923 mxlock |= (1<<RTAX_ADVMSS);
924 NEXT_ARG();
925 }
926 if (get_unsigned(&mss, *argv, 0))
927 invarg("\"mss\" value is invalid\n", *argv);
928 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
aba5acdf
SH		 929 } else if (matches(*argv, "reordering") == 0) {
930 unsigned reord;
931 NEXT_ARG();
932 if (strcmp(*argv, "lock") == 0) {
933 mxlock |= (1<<RTAX_REORDERING);
934 NEXT_ARG();
935 }
936 if (get_unsigned(&reord, *argv, 0))
937 invarg("\"reordering\" value is invalid\n", *argv);
938 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
aba5acdf
SH		 939 } else if (strcmp(*argv, "rtt") == 0) {
940 unsigned rtt;
941 NEXT_ARG();
942 if (strcmp(*argv, "lock") == 0) {
943 mxlock |= (1<<RTAX_RTT);
944 NEXT_ARG();
945 }
81d03dc3 946 if (get_time_rtt(&rtt, *argv, &raw))
aba5acdf 947 invarg("\"rtt\" value is invalid\n", *argv);
0612519e 948 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT,
54e0b2e7
RJ		 949 (raw) ? rtt : rtt * 8);
950 } else if (strcmp(*argv, "rto_min") == 0) {
951 unsigned rto_min;
952 NEXT_ARG();
953 mxlock |= (1<<RTAX_RTO_MIN);
81d03dc3 954 if (get_time_rtt(&rto_min, *argv, &raw))
54e0b2e7
RJ		 955 invarg("\"rto_min\" value is invalid\n",
956 *argv);
957 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN,
958 rto_min);
aba5acdf
SH		 959 } else if (matches(*argv, "window") == 0) {
960 unsigned win;
961 NEXT_ARG();
962 if (strcmp(*argv, "lock") == 0) {
963 mxlock |= (1<<RTAX_WINDOW);
964 NEXT_ARG();
965 }
966 if (get_unsigned(&win, *argv, 0))
967 invarg("\"window\" value is invalid\n", *argv);
968 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
969 } else if (matches(*argv, "cwnd") == 0) {
970 unsigned win;
971 NEXT_ARG();
972 if (strcmp(*argv, "lock") == 0) {
973 mxlock |= (1<<RTAX_CWND);
974 NEXT_ARG();
975 }
976 if (get_unsigned(&win, *argv, 0))
977 invarg("\"cwnd\" value is invalid\n", *argv);
978 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
a1f1143e
VW		 979 } else if (matches(*argv, "initcwnd") == 0) {
980 unsigned win;
981 NEXT_ARG();
982 if (strcmp(*argv, "lock") == 0) {
983 mxlock |= (1<<RTAX_INITCWND);
984 NEXT_ARG();
985 }
986 if (get_unsigned(&win, *argv, 0))
987 invarg("\"initcwnd\" value is invalid\n", *argv);
988 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITCWND, win);
f5fd8003 989 } else if (matches(*argv, "initrwnd") == 0) {
990 unsigned win;
991 NEXT_ARG();
992 if (strcmp(*argv, "lock") == 0) {
993 mxlock |= (1<<RTAX_INITRWND);
994 NEXT_ARG();
995 }
996 if (get_unsigned(&win, *argv, 0))
997 invarg("\"initrwnd\" value is invalid\n", *argv);
998 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITRWND, win);
29d1f730
FW		 999 } else if (matches(*argv, "features") == 0) {
1000 unsigned int features = 0;
1001
1002 while (argc > 0) {
1003 NEXT_ARG();
1004
1005 if (strcmp(*argv, "ecn") == 0)
1006 features |= RTAX_FEATURE_ECN;
1007 else
1008 invarg("\"features\" value not valid\n", *argv);
1009 break;
1010 }
1011
1012 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_FEATURES, features);
b37f2c89
CW		 1013 } else if (matches(*argv, "quickack") == 0) {
1014 unsigned quickack;
1015 NEXT_ARG();
1016 if (get_unsigned(&quickack, *argv, 0))
1017 invarg("\"quickack\" value is invalid\n", *argv);
1018 if (quickack != 1 && quickack != 0)
1019 invarg("\"quickack\" value should be 0 or 1\n", *argv);
1020 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_QUICKACK, quickack);
6ef87f9c
DB		 1021 } else if (matches(*argv, "congctl") == 0) {
1022 NEXT_ARG();
1023 if (strcmp(*argv, "lock") == 0) {
1024 mxlock |= 1 << RTAX_CC_ALGO;
1025 NEXT_ARG();
1026 }
1027 rta_addattr_l(mxrta, sizeof(mxbuf), RTAX_CC_ALGO, *argv,
1028 strlen(*argv));
aba5acdf
SH		 1029 } else if (matches(*argv, "rttvar") == 0) {
1030 unsigned win;
1031 NEXT_ARG();
1032 if (strcmp(*argv, "lock") == 0) {
1033 mxlock |= (1<<RTAX_RTTVAR);
1034 NEXT_ARG();
1035 }
81d03dc3 1036 if (get_time_rtt(&win, *argv, &raw))
aba5acdf 1037 invarg("\"rttvar\" value is invalid\n", *argv);
54e0b2e7
RJ		 1038 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR,
1039 (raw) ? win : win * 4);
aba5acdf
SH		 1040 } else if (matches(*argv, "ssthresh") == 0) {
1041 unsigned win;
1042 NEXT_ARG();
1043 if (strcmp(*argv, "lock") == 0) {
1044 mxlock |= (1<<RTAX_SSTHRESH);
1045 NEXT_ARG();
1046 }
1047 if (get_unsigned(&win, *argv, 0))
1048 invarg("\"ssthresh\" value is invalid\n", *argv);
1049 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
1050 } else if (matches(*argv, "realms") == 0) {
1051 __u32 realm;
1052 NEXT_ARG();
1053 if (get_rt_realms(&realm, *argv))
1054 invarg("\"realm\" value is invalid\n", *argv);
1055 addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
1056 } else if (strcmp(*argv, "onlink") == 0) {
1057 req.r.rtm_flags |= RTNH_F_ONLINK;
aba5acdf
SH		 1058 } else if (strcmp(*argv, "nexthop") == 0) {
1059 nhs_ok = 1;
1060 break;
1061 } else if (matches(*argv, "protocol") == 0) {
f332d169 1062 __u32 prot;
aba5acdf
SH		 1063 NEXT_ARG();
1064 if (rtnl_rtprot_a2n(&prot, *argv))
1065 invarg("\"protocol\" value is invalid\n", *argv);
1066 req.r.rtm_protocol = prot;
aba5acdf 1067 } else if (matches(*argv, "table") == 0) {
f332d169 1068 __u32 tid;
aba5acdf
SH		 1069 NEXT_ARG();
1070 if (rtnl_rttable_a2n(&tid, *argv))
1071 invarg("\"table\" value is invalid\n", *argv);
34e95647
PM		 1072 if (tid < 256)
1073 req.r.rtm_table = tid;
1074 else {
1075 req.r.rtm_table = RT_TABLE_UNSPEC;
1076 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
1077 }
aba5acdf
SH		 1078 table_ok = 1;
1079 } else if (strcmp(*argv, "dev") == 0 ||
1080 strcmp(*argv, "oif") == 0) {
1081 NEXT_ARG();
1082 d = *argv;
194e9b85
LR		 1083 } else if (matches(*argv, "pref") == 0) {
1084 __u8 pref;
1085 NEXT_ARG();
1086 if (strcmp(*argv, "low") == 0)
1087 pref = ICMPV6_ROUTER_PREF_LOW;
1088 else if (strcmp(*argv, "medium") == 0)
1089 pref = ICMPV6_ROUTER_PREF_MEDIUM;
1090 else if (strcmp(*argv, "high") == 0)
1091 pref = ICMPV6_ROUTER_PREF_HIGH;
1092 else if (get_u8(&pref, *argv, 0))
1093 invarg("\"pref\" value is invalid\n", *argv);
1094 addattr8(&req.n, sizeof(req), RTA_PREF, pref);
aba5acdf
SH		 1095 } else {
1096 int type;
1097 inet_prefix dst;
1098
1099 if (strcmp(*argv, "to") == 0) {
1100 NEXT_ARG();
1101 }
1102 if ((**argv < '0' || **argv > '9') &&
1103 rtnl_rtntype_a2n(&type, *argv) == 0) {
1104 NEXT_ARG();
1105 req.r.rtm_type = type;
f638e9f7 1106 type_ok = 1;
aba5acdf
SH		 1107 }
1108
1109 if (matches(*argv, "help") == 0)
1110 usage();
1111 if (dst_ok)
1112 duparg2("to", *argv);
1113 get_prefix(&dst, *argv, req.r.rtm_family);
1114 if (req.r.rtm_family == AF_UNSPEC)
1115 req.r.rtm_family = dst.family;
1116 req.r.rtm_dst_len = dst.bitlen;
1117 dst_ok = 1;
1118 if (dst.bytelen)
1119 addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
1120 }
1121 argc--; argv++;
1122 }
1123
922b4822
PS		 1124 if (!dst_ok)
1125 usage();
1126
aba5acdf
SH		 1127 if (d || nhs_ok) {
1128 int idx;
1129
aba5acdf
SH		 1130 if (d) {
1131 if ((idx = ll_name_to_index(d)) == 0) {
1132 fprintf(stderr, "Cannot find device \"%s\"\n", d);
1133 return -1;
1134 }
1135 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
1136 }
1137 }
1138
1139 if (mxrta->rta_len > RTA_LENGTH(0)) {
1140 if (mxlock)
1141 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
1142 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
1143 }
1144
1145 if (nhs_ok)
1146 parse_nexthops(&req.n, &req.r, argc, argv);
1147
f638e9f7
RP		 1148 if (req.r.rtm_family == AF_UNSPEC)
1149 req.r.rtm_family = AF_INET;
1150
aba5acdf
SH		 1151 if (!table_ok) {
1152 if (req.r.rtm_type == RTN_LOCAL ||
1153 req.r.rtm_type == RTN_BROADCAST ||
1154 req.r.rtm_type == RTN_NAT ||
1155 req.r.rtm_type == RTN_ANYCAST)
1156 req.r.rtm_table = RT_TABLE_LOCAL;
1157 }
1158 if (!scope_ok) {
f638e9f7
RP		 1159 if (req.r.rtm_family == AF_INET6 ||
1160 req.r.rtm_family == AF_MPLS)
1161 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
1162 else if (req.r.rtm_type == RTN_LOCAL ||
1163 req.r.rtm_type == RTN_NAT)
aba5acdf
SH		 1164 req.r.rtm_scope = RT_SCOPE_HOST;
1165 else if (req.r.rtm_type == RTN_BROADCAST ||
1166 req.r.rtm_type == RTN_MULTICAST ||
1167 req.r.rtm_type == RTN_ANYCAST)
1168 req.r.rtm_scope = RT_SCOPE_LINK;
1169 else if (req.r.rtm_type == RTN_UNICAST ||
1170 req.r.rtm_type == RTN_UNSPEC) {
1171 if (cmd == RTM_DELROUTE)
1172 req.r.rtm_scope = RT_SCOPE_NOWHERE;
1173 else if (!gw_ok && !nhs_ok)
1174 req.r.rtm_scope = RT_SCOPE_LINK;
1175 }
1176 }
1177
f638e9f7
RP		 1178 if (!type_ok && req.r.rtm_family == AF_MPLS)
1179 req.r.rtm_type = RTN_UNICAST;
aba5acdf 1180
c079e121 1181 if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
d58ba4ba 1182 return -2;
aba5acdf
SH		 1183
1184 return 0;
1185}
1186
1187static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
1188{
1189 struct {
1190 struct nlmsghdr nlh;
1191 struct rtmsg rtm;
1192 } req;
1193 struct sockaddr_nl nladdr;
1194
1195 memset(&nladdr, 0, sizeof(nladdr));
1196 memset(&req, 0, sizeof(req));
1197 nladdr.nl_family = AF_NETLINK;
1198
1199 req.nlh.nlmsg_len = sizeof(req);
1200 req.nlh.nlmsg_type = RTM_GETROUTE;
1201 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST;
1202 req.nlh.nlmsg_pid = 0;
1203 req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
1204 req.rtm.rtm_family = family;
1205 req.rtm.rtm_flags |= RTM_F_CLONED;
1206
1207 return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
1208}
1209
1210static int iproute_flush_cache(void)
1211{
1212#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1213
1214 int len;
1215 int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY);
1216 char *buffer = "-1";
1217
1218 if (flush_fd < 0) {
9827fa57
DK		 1219 fprintf (stderr, "Cannot open \"%s\": %s\n",
1220 ROUTE_FLUSH_PATH, strerror(errno));
aba5acdf
SH		 1221 return -1;
1222 }
1223
1224 len = strlen (buffer);
ae665a52 1225
aba5acdf
SH		 1226 if ((write (flush_fd, (void *)buffer, len)) < len) {
1227 fprintf (stderr, "Cannot flush routing cache\n");
25352af7 1228 close(flush_fd);
aba5acdf
SH		 1229 return -1;
1230 }
1231 close(flush_fd);
1232 return 0;
1233}
1234
76c61b34
PE		 1235static __u32 route_dump_magic = 0x45311224;
1236
d1f28cf1
SH		 1237static int save_route(const struct sockaddr_nl *who, struct nlmsghdr *n,
1238 void *arg)
f4ff11e3
DS		 1239{
1240 int ret;
1241 int len = n->nlmsg_len;
1242 struct rtmsg *r = NLMSG_DATA(n);
1243 struct rtattr *tb[RTA_MAX+1];
f3a2ddc1 1244 int host_len;
f4ff11e3 1245
f3a2ddc1 1246 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 1247 len -= NLMSG_LENGTH(sizeof(*r));
1248 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1249
1250 if (!filter_nlmsg(n, tb, host_len))
1251 return 0;
1252
1253 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
1254 if ((ret > 0) && (ret != n->nlmsg_len)) {
1255 fprintf(stderr, "Short write while saving nlmsg\n");
1256 ret = -EIO;
1257 }
1258
1259 return ret == n->nlmsg_len ? 0 : ret;
1260}
aba5acdf 1261
76c61b34
PE		 1262static int save_route_prep(void)
1263{
1264 int ret;
1265
1266 if (isatty(STDOUT_FILENO)) {
14645ec2 1267 fprintf(stderr, "Not sending a binary stream to stdout\n");
76c61b34
PE		 1268 return -1;
1269 }
1270
1271 ret = write(STDOUT_FILENO, &route_dump_magic, sizeof(route_dump_magic));
1272 if (ret != sizeof(route_dump_magic)) {
1273 fprintf(stderr, "Can't write magic to dump file\n");
1274 return -1;
1275 }
1276
1277 return 0;
1278}
1279
f4ff11e3 1280static int iproute_list_flush_or_save(int argc, char **argv, int action)
aba5acdf
SH		 1281{
1282 int do_ipv6 = preferred_family;
aba5acdf
SH		 1283 char *id = NULL;
1284 char *od = NULL;
b0373bfb 1285 unsigned int mark = 0;
f4ff11e3
DS		 1286 rtnl_filter_t filter_fn;
1287
76c61b34
PE		 1288 if (action == IPROUTE_SAVE) {
1289 if (save_route_prep())
1290 return -1;
1291
f4ff11e3 1292 filter_fn = save_route;
76c61b34 1293 } else
f4ff11e3 1294 filter_fn = print_route;
aba5acdf 1295
093b7646 1296 iproute_reset_filter(0);
aba5acdf
SH		 1297 filter.tb = RT_TABLE_MAIN;
1298
f4ff11e3 1299 if ((action == IPROUTE_FLUSH) && argc <= 0) {
aba5acdf
SH		 1300 fprintf(stderr, "\"ip route flush\" requires arguments.\n");
1301 return -1;
1302 }
1303
1304 while (argc > 0) {
1305 if (matches(*argv, "table") == 0) {
f332d169 1306 __u32 tid;
aba5acdf
SH		 1307 NEXT_ARG();
1308 if (rtnl_rttable_a2n(&tid, *argv)) {
1309 if (strcmp(*argv, "all") == 0) {
bd4bcdad 1310 filter.tb = 0;
aba5acdf 1311 } else if (strcmp(*argv, "cache") == 0) {
bd4bcdad 1312 filter.cloned = 1;
aba5acdf
SH		 1313 } else if (strcmp(*argv, "help") == 0) {
1314 usage();
1315 } else {
1316 invarg("table id value is invalid\n", *argv);
1317 }
bd4bcdad
PM		 1318 } else
1319 filter.tb = tid;
aba5acdf
SH		 1320 } else if (matches(*argv, "cached") == 0 ||
1321 matches(*argv, "cloned") == 0) {
bd4bcdad 1322 filter.cloned = 1;
aba5acdf
SH		 1323 } else if (strcmp(*argv, "tos") == 0 ||
1324 matches(*argv, "dsfield") == 0) {
1325 __u32 tos;
1326 NEXT_ARG();
1327 if (rtnl_dsfield_a2n(&tos, *argv))
1328 invarg("TOS value is invalid\n", *argv);
1329 filter.tos = tos;
1330 filter.tosmask = -1;
1331 } else if (matches(*argv, "protocol") == 0) {
f332d169 1332 __u32 prot = 0;
aba5acdf
SH		 1333 NEXT_ARG();
1334 filter.protocolmask = -1;
1335 if (rtnl_rtprot_a2n(&prot, *argv)) {
1336 if (strcmp(*argv, "all") != 0)
1337 invarg("invalid \"protocol\"\n", *argv);
1338 prot = 0;
1339 filter.protocolmask = 0;
1340 }
1341 filter.protocol = prot;
1342 } else if (matches(*argv, "scope") == 0) {
f332d169 1343 __u32 scope = 0;
aba5acdf
SH		 1344 NEXT_ARG();
1345 filter.scopemask = -1;
1346 if (rtnl_rtscope_a2n(&scope, *argv)) {
1347 if (strcmp(*argv, "all") != 0)
1348 invarg("invalid \"scope\"\n", *argv);
1349 scope = RT_SCOPE_NOWHERE;
1350 filter.scopemask = 0;
1351 }
1352 filter.scope = scope;
1353 } else if (matches(*argv, "type") == 0) {
1354 int type;
1355 NEXT_ARG();
1356 filter.typemask = -1;
1357 if (rtnl_rtntype_a2n(&type, *argv))
1358 invarg("node type value is invalid\n", *argv);
1359 filter.type = type;
1360 } else if (strcmp(*argv, "dev") == 0 ||
1361 strcmp(*argv, "oif") == 0) {
1362 NEXT_ARG();
1363 od = *argv;
1364 } else if (strcmp(*argv, "iif") == 0) {
1365 NEXT_ARG();
1366 id = *argv;
b0373bfb
ED		 1367 } else if (strcmp(*argv, "mark") == 0) {
1368 NEXT_ARG();
1369 get_unsigned(&mark, *argv, 0);
1370 filter.markmask = -1;
aba5acdf 1371 } else if (strcmp(*argv, "via") == 0) {
93ae2835 1372 int family;
aba5acdf 1373 NEXT_ARG();
93ae2835
EB		 1374 family = read_family(*argv);
1375 if (family == AF_UNSPEC)
1376 family = do_ipv6;
1377 else
1378 NEXT_ARG();
1379 get_prefix(&filter.rvia, *argv, family);
aba5acdf
SH		 1380 } else if (strcmp(*argv, "src") == 0) {
1381 NEXT_ARG();
1382 get_prefix(&filter.rprefsrc, *argv, do_ipv6);
1383 } else if (matches(*argv, "realms") == 0) {
1384 __u32 realm;
1385 NEXT_ARG();
1386 if (get_rt_realms(&realm, *argv))
1387 invarg("invalid realms\n", *argv);
1388 filter.realm = realm;
1389 filter.realmmask = ~0U;
1390 if ((filter.realm&0xFFFF) == 0 &&
1391 (*argv)[strlen(*argv) - 1] == '/')
1392 filter.realmmask &= ~0xFFFF;
1393 if ((filter.realm&0xFFFF0000U) == 0 &&
1394 (strchr(*argv, '/') == NULL ||
1395 (*argv)[0] == '/'))
1396 filter.realmmask &= ~0xFFFF0000U;
1397 } else if (matches(*argv, "from") == 0) {
1398 NEXT_ARG();
1399 if (matches(*argv, "root") == 0) {
1400 NEXT_ARG();
1401 get_prefix(&filter.rsrc, *argv, do_ipv6);
1402 } else if (matches(*argv, "match") == 0) {
1403 NEXT_ARG();
1404 get_prefix(&filter.msrc, *argv, do_ipv6);
1405 } else {
1406 if (matches(*argv, "exact") == 0) {
1407 NEXT_ARG();
1408 }
1409 get_prefix(&filter.msrc, *argv, do_ipv6);
1410 filter.rsrc = filter.msrc;
1411 }
1412 } else {
1413 if (matches(*argv, "to") == 0) {
1414 NEXT_ARG();
1415 }
1416 if (matches(*argv, "root") == 0) {
1417 NEXT_ARG();
1418 get_prefix(&filter.rdst, *argv, do_ipv6);
1419 } else if (matches(*argv, "match") == 0) {
1420 NEXT_ARG();
1421 get_prefix(&filter.mdst, *argv, do_ipv6);
1422 } else {
1423 if (matches(*argv, "exact") == 0) {
1424 NEXT_ARG();
1425 }
1426 get_prefix(&filter.mdst, *argv, do_ipv6);
1427 filter.rdst = filter.mdst;
1428 }
1429 }
1430 argc--; argv++;
1431 }
1432
1433 if (do_ipv6 == AF_UNSPEC && filter.tb)
1434 do_ipv6 = AF_INET;
1435
aba5acdf
SH		 1436 if (id || od) {
1437 int idx;
1438
1439 if (id) {
1440 if ((idx = ll_name_to_index(id)) == 0) {
1441 fprintf(stderr, "Cannot find device \"%s\"\n", id);
1442 return -1;
1443 }
1444 filter.iif = idx;
1445 filter.iifmask = -1;
1446 }
1447 if (od) {
1448 if ((idx = ll_name_to_index(od)) == 0) {
1449 fprintf(stderr, "Cannot find device \"%s\"\n", od);
1450 return -1;
1451 }
1452 filter.oif = idx;
1453 filter.oifmask = -1;
1454 }
1455 }
b0373bfb 1456 filter.mark = mark;
aba5acdf 1457
f4ff11e3 1458 if (action == IPROUTE_FLUSH) {
aba5acdf
SH		 1459 int round = 0;
1460 char flushb[4096-512];
33551240 1461 time_t start = time(0);
aba5acdf 1462
bd4bcdad 1463 if (filter.cloned) {
aba5acdf
SH		 1464 if (do_ipv6 != AF_INET6) {
1465 iproute_flush_cache();
1466 if (show_stats)
1467 printf("*** IPv4 routing cache is flushed.\n");
1468 }
1469 if (do_ipv6 == AF_INET)
1470 return 0;
1471 }
1472
1473 filter.flushb = flushb;
1474 filter.flushp = 0;
1475 filter.flushe = sizeof(flushb);
aba5acdf
SH		 1476
1477 for (;;) {
1478 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1479 perror("Cannot send dump request");
1480 exit(1);
1481 }
1482 filter.flushed = 0;
cd70f3f5 1483 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
aba5acdf
SH		 1484 fprintf(stderr, "Flush terminated\n");
1485 exit(1);
1486 }
1487 if (filter.flushed == 0) {
f0b34d2d
AH		 1488 if (show_stats) {
1489 if (round == 0 && (!filter.cloned || do_ipv6 == AF_INET6))
1490 printf("Nothing to flush.\n");
1491 else
1492 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
1493 }
aba5acdf
SH		 1494 fflush(stdout);
1495 return 0;
1496 }
1497 round++;
1498 if (flush_update() < 0)
1499 exit(1);
33551240
SH		 1500
1501 if (time(0) - start > 30) {
1502 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
5d8a7529 1503 (long)(time(0) - start), filter.flushed);
33551240
SH		 1504 exit(1);
1505 }
1506
aba5acdf
SH		 1507 if (show_stats) {
1508 printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed);
1509 fflush(stdout);
1510 }
1511 }
1512 }
1513
bd4bcdad 1514 if (!filter.cloned) {
aba5acdf
SH		 1515 if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
1516 perror("Cannot send dump request");
1517 exit(1);
1518 }
1519 } else {
1520 if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
1521 perror("Cannot send dump request");
1522 exit(1);
1523 }
1524 }
1525
cd70f3f5 1526 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
aba5acdf
SH		 1527 fprintf(stderr, "Dump terminated\n");
1528 exit(1);
1529 }
1530
1531 exit(0);
1532}
1533
1534
d1f28cf1 1535static int iproute_get(int argc, char **argv)
aba5acdf 1536{
aba5acdf 1537 struct {
4806867a
SH		 1538 struct nlmsghdr n;
1539 struct rtmsg r;
1540 char buf[1024];
aba5acdf
SH		 1541 } req;
1542 char *idev = NULL;
1543 char *odev = NULL;
1544 int connected = 0;
1545 int from_ok = 0;
b0373bfb 1546 unsigned int mark = 0;
aba5acdf
SH		 1547
1548 memset(&req, 0, sizeof(req));
1549
093b7646 1550 iproute_reset_filter(0);
c73f3e02 1551 filter.cloned = 2;
aba5acdf
SH		 1552
1553 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
1554 req.n.nlmsg_flags = NLM_F_REQUEST;
1555 req.n.nlmsg_type = RTM_GETROUTE;
1556 req.r.rtm_family = preferred_family;
1557 req.r.rtm_table = 0;
1558 req.r.rtm_protocol = 0;
1559 req.r.rtm_scope = 0;
1560 req.r.rtm_type = 0;
1561 req.r.rtm_src_len = 0;
1562 req.r.rtm_dst_len = 0;
1563 req.r.rtm_tos = 0;
ae665a52 1564
aba5acdf
SH		 1565 while (argc > 0) {
1566 if (strcmp(*argv, "tos") == 0 ||
1567 matches(*argv, "dsfield") == 0) {
1568 __u32 tos;
1569 NEXT_ARG();
1570 if (rtnl_dsfield_a2n(&tos, *argv))
1571 invarg("TOS value is invalid\n", *argv);
1572 req.r.rtm_tos = tos;
1573 } else if (matches(*argv, "from") == 0) {
1574 inet_prefix addr;
1575 NEXT_ARG();
1576 if (matches(*argv, "help") == 0)
1577 usage();
1578 from_ok = 1;
1579 get_prefix(&addr, *argv, req.r.rtm_family);
1580 if (req.r.rtm_family == AF_UNSPEC)
1581 req.r.rtm_family = addr.family;
1582 if (addr.bytelen)
1583 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
1584 req.r.rtm_src_len = addr.bitlen;
1585 } else if (matches(*argv, "iif") == 0) {
1586 NEXT_ARG();
1587 idev = *argv;
b0373bfb
ED		 1588 } else if (matches(*argv, "mark") == 0) {
1589 NEXT_ARG();
1590 get_unsigned(&mark, *argv, 0);
aba5acdf
SH		 1591 } else if (matches(*argv, "oif") == 0 ||
1592 strcmp(*argv, "dev") == 0) {
1593 NEXT_ARG();
1594 odev = *argv;
1595 } else if (matches(*argv, "notify") == 0) {
1596 req.r.rtm_flags |= RTM_F_NOTIFY;
1597 } else if (matches(*argv, "connected") == 0) {
1598 connected = 1;
1599 } else {
1600 inet_prefix addr;
1601 if (strcmp(*argv, "to") == 0) {
1602 NEXT_ARG();
1603 }
1604 if (matches(*argv, "help") == 0)
1605 usage();
1606 get_prefix(&addr, *argv, req.r.rtm_family);
1607 if (req.r.rtm_family == AF_UNSPEC)
1608 req.r.rtm_family = addr.family;
1609 if (addr.bytelen)
1610 addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
1611 req.r.rtm_dst_len = addr.bitlen;
1612 }
1613 argc--; argv++;
1614 }
1615
1616 if (req.r.rtm_dst_len == 0) {
14645ec2 1617 fprintf(stderr, "need at least a destination address\n");
aba5acdf
SH		 1618 exit(1);
1619 }
1620
aba5acdf
SH		 1621 if (idev || odev) {
1622 int idx;
1623
1624 if (idev) {
1625 if ((idx = ll_name_to_index(idev)) == 0) {
1626 fprintf(stderr, "Cannot find device \"%s\"\n", idev);
1627 return -1;
1628 }
1629 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
1630 }
1631 if (odev) {
1632 if ((idx = ll_name_to_index(odev)) == 0) {
1633 fprintf(stderr, "Cannot find device \"%s\"\n", odev);
1634 return -1;
1635 }
1636 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
1637 }
1638 }
b0373bfb
ED		 1639 if (mark)
1640 addattr32(&req.n, sizeof(req), RTA_MARK, mark);
aba5acdf
SH		 1641
1642 if (req.r.rtm_family == AF_UNSPEC)
1643 req.r.rtm_family = AF_INET;
1644
c079e121 1645 if (rtnl_talk(&rth, &req.n, &req.n, sizeof(req)) < 0)
8b21cef1 1646 return -2;
aba5acdf
SH		 1647
1648 if (connected && !from_ok) {
1649 struct rtmsg *r = NLMSG_DATA(&req.n);
1650 int len = req.n.nlmsg_len;
1651 struct rtattr * tb[RTA_MAX+1];
1652
1653 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1654 fprintf(stderr, "An error :-)\n");
1655 exit(1);
1656 }
1657
1658 if (req.n.nlmsg_type != RTM_NEWROUTE) {
1659 fprintf(stderr, "Not a route?\n");
1660 return -1;
1661 }
1662 len -= NLMSG_LENGTH(sizeof(*r));
1663 if (len < 0) {
1664 fprintf(stderr, "Wrong len %d\n", len);
1665 return -1;
1666 }
1667
aba5acdf
SH		 1668 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1669
1670 if (tb[RTA_PREFSRC]) {
1671 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
1672 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
1673 } else if (!tb[RTA_SRC]) {
1674 fprintf(stderr, "Failed to connect the route\n");
1675 return -1;
1676 }
1677 if (!odev && tb[RTA_OIF])
1678 tb[RTA_OIF]->rta_type = 0;
1679 if (tb[RTA_GATEWAY])
1680 tb[RTA_GATEWAY]->rta_type = 0;
93ae2835
EB		 1681 if (tb[RTA_VIA])
1682 tb[RTA_VIA]->rta_type = 0;
aba5acdf
SH		 1683 if (!idev && tb[RTA_IIF])
1684 tb[RTA_IIF]->rta_type = 0;
1685 req.n.nlmsg_flags = NLM_F_REQUEST;
1686 req.n.nlmsg_type = RTM_GETROUTE;
1687
c079e121 1688 if (rtnl_talk(&rth, &req.n, &req.n, sizeof(req)) < 0)
56d8ff0a 1689 return -2;
aba5acdf
SH		 1690 }
1691
1692 if (print_route(NULL, &req.n, (void*)stdout) < 0) {
1693 fprintf(stderr, "An error :-)\n");
56d8ff0a 1694 return -1;
aba5acdf
SH		 1695 }
1696
56d8ff0a 1697 return 0;
aba5acdf
SH		 1698}
1699
0628cddd
ND		 1700static int restore_handler(const struct sockaddr_nl *nl,
1701 struct rtnl_ctrl_data *ctrl,
1702 struct nlmsghdr *n, void *arg)
f4ff11e3
DS		 1703{
1704 int ret;
1705
1706 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
1707
1708 ll_init_map(&rth);
1709
c079e121 1710 ret = rtnl_talk(&rth, n, n, sizeof(*n));
f4ff11e3
DS		 1711 if ((ret < 0) && (errno == EEXIST))
1712 ret = 0;
1713
1714 return ret;
1715}
1716
76c61b34
PE		 1717static int route_dump_check_magic(void)
1718{
1719 int ret;
1720 __u32 magic = 0;
1721
1722 if (isatty(STDIN_FILENO)) {
1723 fprintf(stderr, "Can't restore route dump from a terminal\n");
1724 return -1;
1725 }
1726
1727 ret = fread(&magic, sizeof(magic), 1, stdin);
1728 if (magic != route_dump_magic) {
1729 fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic);
1730 return -1;
1731 }
1732
1733 return 0;
1734}
1735
d1f28cf1 1736static int iproute_restore(void)
f4ff11e3 1737{
76c61b34
PE		 1738 if (route_dump_check_magic())
1739 exit(-1);
1740
f4ff11e3
DS		 1741 exit(rtnl_from_file(stdin, &restore_handler, NULL));
1742}
1743
0628cddd
ND		 1744static int show_handler(const struct sockaddr_nl *nl,
1745 struct rtnl_ctrl_data *ctrl,
1746 struct nlmsghdr *n, void *arg)
93b79863
PE		 1747{
1748 print_route(nl, n, stdout);
1749 return 0;
1750}
1751
1752static int iproute_showdump(void)
1753{
1754 if (route_dump_check_magic())
1755 exit(-1);
1756
1757 exit(rtnl_from_file(stdin, &show_handler, NULL));
1758}
1759
093b7646 1760void iproute_reset_filter(int ifindex)
aba5acdf
SH		 1761{
1762 memset(&filter, 0, sizeof(filter));
1763 filter.mdst.bitlen = -1;
1764 filter.msrc.bitlen = -1;
093b7646 1765 filter.oif = ifindex;
1766 if (filter.oif > 0)
1767 filter.oifmask = -1;
aba5acdf
SH		 1768}
1769
1770int do_iproute(int argc, char **argv)
1771{
1772 if (argc < 1)
f4ff11e3 1773 return iproute_list_flush_or_save(0, NULL, IPROUTE_LIST);
ae665a52 1774
aba5acdf
SH		 1775 if (matches(*argv, "add") == 0)
1776 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
1777 argc-1, argv+1);
1778 if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
1779 return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
1780 argc-1, argv+1);
1781 if (matches(*argv, "replace") == 0)
1782 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
1783 argc-1, argv+1);
1784 if (matches(*argv, "prepend") == 0)
1785 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
1786 argc-1, argv+1);
1787 if (matches(*argv, "append") == 0)
1788 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
1789 argc-1, argv+1);
1790 if (matches(*argv, "test") == 0)
1791 return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
1792 argc-1, argv+1);
1793 if (matches(*argv, "delete") == 0)
1794 return iproute_modify(RTM_DELROUTE, 0,
1795 argc-1, argv+1);
1796 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1797 || matches(*argv, "lst") == 0)
f4ff11e3 1798 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_LIST);
aba5acdf
SH		 1799 if (matches(*argv, "get") == 0)
1800 return iproute_get(argc-1, argv+1);
1801 if (matches(*argv, "flush") == 0)
f4ff11e3
DS		 1802 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_FLUSH);
1803 if (matches(*argv, "save") == 0)
1804 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_SAVE);
1805 if (matches(*argv, "restore") == 0)
1806 return iproute_restore();
93b79863
PE		 1807 if (matches(*argv, "showdump") == 0)
1808 return iproute_showdump();
aba5acdf
SH		 1809 if (matches(*argv, "help") == 0)
1810 usage();
1811 fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
1812 exit(-1);
1813}
1814
Upstream mirror of iproute2