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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>
aba5acdf
SH		 16#include <fcntl.h>
17#include <string.h>
33551240 18#include <time.h>
aba5acdf
SH		 19#include <sys/time.h>
20#include <sys/socket.h>
21#include <netinet/in.h>
22#include <netinet/ip.h>
23#include <arpa/inet.h>
24#include <linux/in_route.h>
194e9b85 25#include <linux/icmpv6.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 41static const char *mx_names[RTAX_MAX+1] = {
e54ed380
CP		 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",
53 [RTAX_RTO_MIN] = "rto_min",
54 [RTAX_INITRWND] = "initrwnd",
55 [RTAX_QUICKACK] = "quickack",
56 [RTAX_CC_ALGO] = "congctl",
57 [RTAX_FASTOPEN_NO_COOKIE] = "fastopen_no_cookie"
f38c7334 58};
aba5acdf
SH		 59static void usage(void) __attribute__((noreturn));
60
61static void usage(void)
62{
21fef525
SH		 63 fprintf(stderr,
64 "Usage: ip route { list | flush } SELECTOR\n"
65 " ip route save SELECTOR\n"
66 " ip route restore\n"
67 " ip route showdump\n"
68 " ip route get [ ROUTE_GET_FLAGS ] ADDRESS\n"
69 " [ from ADDRESS iif STRING ]\n"
70 " [ oif STRING ] [ tos TOS ]\n"
71 " [ mark NUMBER ] [ vrf NAME ]\n"
804c7fff
RP		 72 " [ uid NUMBER ] [ ipproto PROTOCOL ]\n"
73 " [ sport NUMBER ] [ dport NUMBER ]\n"
21fef525
SH		 74 " ip route { add | del | change | append | replace } ROUTE\n"
75 "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n"
76 " [ table TABLE_ID ] [ vrf NAME ] [ proto RTPROTO ]\n"
77 " [ type TYPE ] [ scope SCOPE ]\n"
78 "ROUTE := NODE_SPEC [ INFO_SPEC ]\n"
79 "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n"
80 " [ table TABLE_ID ] [ proto RTPROTO ]\n"
81 " [ scope SCOPE ] [ metric METRIC ]\n"
82 " [ ttl-propagate { enabled | disabled } ]\n"
12387e2c 83 "INFO_SPEC := { NH | nhid ID } OPTIONS FLAGS [ nexthop NH ]...\n"
21fef525
SH		 84 "NH := [ encap ENCAPTYPE ENCAPHDR ] [ via [ FAMILY ] ADDRESS ]\n"
85 " [ dev STRING ] [ weight NUMBER ] NHFLAGS\n"
738aebe5 86 "FAMILY := [ inet | inet6 | mpls | bridge | link ]\n"
21fef525
SH		 87 "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]\n"
88 " [ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]\n"
89 " [ window NUMBER ] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n"
90 " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n"
91 " [ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]\n"
92 " [ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]\n"
e54ed380 93 " [ pref PREF ] [ expires TIME ] [ fastopen_no_cookie BOOL ]\n"
21fef525
SH		 94 "TYPE := { unicast | local | broadcast | multicast | throw |\n"
95 " unreachable | prohibit | blackhole | nat }\n"
96 "TABLE_ID := [ local | main | default | all | NUMBER ]\n"
97 "SCOPE := [ host | link | global | NUMBER ]\n"
98 "NHFLAGS := [ onlink | pervasive ]\n"
99 "RTPROTO := [ kernel | boot | static | NUMBER ]\n"
100 "PREF := [ low | medium | high ]\n"
101 "TIME := NUMBER[s|ms]\n"
102 "BOOL := [1|0]\n"
103 "FEATURES := ecn\n"
104 "ENCAPTYPE := [ mpls | ip | ip6 | seg6 | seg6local ]\n"
105 "ENCAPHDR := [ MPLSLABEL | SEG6HDR ]\n"
106 "SEG6HDR := [ mode SEGMODE ] segs ADDR1,ADDRi,ADDRn [hmac HMACKEYID] [cleanup]\n"
107 "SEGMODE := [ encap | inline ]\n"
108 "ROUTE_GET_FLAGS := [ fibmatch ]\n");
aba5acdf
SH		 109 exit(-1);
110}
111
112
113static struct
114{
caae16b3 115 unsigned int tb;
bd4bcdad 116 int cloned;
aba5acdf
SH		 117 int flushed;
118 char *flushb;
119 int flushp;
120 int flushe;
aba5acdf
SH		 121 int protocol, protocolmask;
122 int scope, scopemask;
d84b1878 123 __u64 typemask;
aba5acdf
SH		 124 int tos, tosmask;
125 int iif, iifmask;
126 int oif, oifmask;
b0373bfb 127 int mark, markmask;
aba5acdf 128 int realm, realmmask;
ed7fdc95 129 __u32 metric, metricmask;
aba5acdf
SH		 130 inet_prefix rprefsrc;
131 inet_prefix rvia;
132 inet_prefix rdst;
133 inet_prefix mdst;
134 inet_prefix rsrc;
135 inet_prefix msrc;
136} filter;
137
138static int flush_update(void)
139{
f31a37f7 140 if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
1fb0a998 141 perror("Failed to send flush request");
2f406f2d 142 return -2;
aba5acdf
SH		 143 }
144 filter.flushp = 0;
145 return 0;
146}
147
d1f28cf1 148static int filter_nlmsg(struct nlmsghdr *n, struct rtattr **tb, int host_len)
aba5acdf 149{
aba5acdf 150 struct rtmsg *r = NLMSG_DATA(n);
d17b136f
PS		 151 inet_prefix dst = { .family = r->rtm_family };
152 inet_prefix src = { .family = r->rtm_family };
153 inet_prefix via = { .family = r->rtm_family };
154 inet_prefix prefsrc = { .family = r->rtm_family };
34e95647 155 __u32 table;
f4ff11e3 156 static int ip6_multiple_tables;
aba5acdf 157
34e95647
PM		 158 table = rtm_get_table(r, tb);
159
5b9ac190
AV		 160 if (preferred_family != AF_UNSPEC && r->rtm_family != preferred_family)
161 return 0;
162
34e95647 163 if (r->rtm_family == AF_INET6 && table != RT_TABLE_MAIN)
e0b29fe7
PM		 164 ip6_multiple_tables = 1;
165
80d1c528 166 if (filter.cloned == !(r->rtm_flags & RTM_F_CLONED))
44792827
UW		 167 return 0;
168
e0b29fe7 169 if (r->rtm_family == AF_INET6 && !ip6_multiple_tables) {
aba5acdf 170 if (filter.tb) {
bd4bcdad
PM		 171 if (filter.tb == RT_TABLE_LOCAL) {
172 if (r->rtm_type != RTN_LOCAL)
aba5acdf 173 return 0;
bd4bcdad
PM		 174 } else if (filter.tb == RT_TABLE_MAIN) {
175 if (r->rtm_type == RTN_LOCAL)
aba5acdf 176 return 0;
bd4bcdad
PM		 177 } else {
178 return 0;
aba5acdf
SH		 179 }
180 }
181 } else {
34e95647 182 if (filter.tb > 0 && filter.tb != table)
aba5acdf
SH		 183 return 0;
184 }
185 if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
186 return 0;
187 if ((filter.scope^r->rtm_scope)&filter.scopemask)
188 return 0;
d84b1878
DA		 189
190 if (filter.typemask && !(filter.typemask & (1 << r->rtm_type)))
aba5acdf
SH		 191 return 0;
192 if ((filter.tos^r->rtm_tos)&filter.tosmask)
193 return 0;
c1218072
AZ		 194 if (filter.rdst.family) {
195 if (r->rtm_family != filter.rdst.family ||
196 filter.rdst.bitlen > r->rtm_dst_len)
197 return 0;
198 } else if (filter.rdst.flags & PREFIXLEN_SPECIFIED) {
199 if (filter.rdst.bitlen > r->rtm_dst_len)
200 return 0;
201 }
202 if (filter.mdst.family) {
203 if (r->rtm_family != filter.mdst.family ||
204 (filter.mdst.bitlen >= 0 &&
205 filter.mdst.bitlen < r->rtm_dst_len))
206 return 0;
207 } else if (filter.mdst.flags & PREFIXLEN_SPECIFIED) {
208 if (filter.mdst.bitlen >= 0 &&
209 filter.mdst.bitlen < r->rtm_dst_len)
210 return 0;
211 }
212 if (filter.rsrc.family) {
213 if (r->rtm_family != filter.rsrc.family ||
214 filter.rsrc.bitlen > r->rtm_src_len)
215 return 0;
216 } else if (filter.rsrc.flags & PREFIXLEN_SPECIFIED) {
217 if (filter.rsrc.bitlen > r->rtm_src_len)
218 return 0;
219 }
220 if (filter.msrc.family) {
221 if (r->rtm_family != filter.msrc.family ||
222 (filter.msrc.bitlen >= 0 &&
223 filter.msrc.bitlen < r->rtm_src_len))
224 return 0;
225 } else if (filter.msrc.flags & PREFIXLEN_SPECIFIED) {
226 if (filter.msrc.bitlen >= 0 &&
227 filter.msrc.bitlen < r->rtm_src_len)
228 return 0;
229 }
93ae2835
EB		 230 if (filter.rvia.family) {
231 int family = r->rtm_family;
56f5daac 232
93ae2835
EB		 233 if (tb[RTA_VIA]) {
234 struct rtvia *via = RTA_DATA(tb[RTA_VIA]);
56f5daac 235
93ae2835
EB		 236 family = via->rtvia_family;
237 }
238 if (family != filter.rvia.family)
239 return 0;
240 }
aba5acdf
SH		 241 if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
242 return 0;
243
aba5acdf
SH		 244 if (tb[RTA_DST])
245 memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
c1218072
AZ		 246 if (filter.rsrc.family || filter.msrc.family ||
247 filter.rsrc.flags & PREFIXLEN_SPECIFIED ||
248 filter.msrc.flags & PREFIXLEN_SPECIFIED) {
aba5acdf
SH		 249 if (tb[RTA_SRC])
250 memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
251 }
56f5daac 252 if (filter.rvia.bitlen > 0) {
aba5acdf 253 if (tb[RTA_GATEWAY])
7849fb55 254 memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len/8);
93ae2835
EB		 255 if (tb[RTA_VIA]) {
256 size_t len = RTA_PAYLOAD(tb[RTA_VIA]) - 2;
257 struct rtvia *rtvia = RTA_DATA(tb[RTA_VIA]);
56f5daac 258
93ae2835
EB		 259 via.family = rtvia->rtvia_family;
260 memcpy(&via.data, rtvia->rtvia_addr, len);
261 }
aba5acdf 262 }
56f5daac 263 if (filter.rprefsrc.bitlen > 0) {
aba5acdf 264 if (tb[RTA_PREFSRC])
7849fb55 265 memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len/8);
aba5acdf
SH		 266 }
267
c1218072
AZ		 268 if ((filter.rdst.family || filter.rdst.flags & PREFIXLEN_SPECIFIED) &&
269 inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
aba5acdf 270 return 0;
c1218072 271 if ((filter.mdst.family || filter.mdst.flags & PREFIXLEN_SPECIFIED) &&
aba5acdf
SH		 272 inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
273 return 0;
274
c1218072
AZ		 275 if ((filter.rsrc.family || filter.rsrc.flags & PREFIXLEN_SPECIFIED) &&
276 inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
aba5acdf 277 return 0;
c1218072
AZ		 278 if ((filter.msrc.family || filter.msrc.flags & PREFIXLEN_SPECIFIED) &&
279 filter.msrc.bitlen >= 0 &&
aba5acdf
SH		 280 inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
281 return 0;
282
283 if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
284 return 0;
285 if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
286 return 0;
287 if (filter.realmmask) {
288 __u32 realms = 0;
56f5daac 289
aba5acdf 290 if (tb[RTA_FLOW])
ff24746c 291 realms = rta_getattr_u32(tb[RTA_FLOW]);
aba5acdf
SH		 292 if ((realms^filter.realm)&filter.realmmask)
293 return 0;
294 }
295 if (filter.iifmask) {
296 int iif = 0;
56f5daac 297
aba5acdf 298 if (tb[RTA_IIF])
9f1370c0 299 iif = rta_getattr_u32(tb[RTA_IIF]);
aba5acdf
SH		 300 if ((iif^filter.iif)&filter.iifmask)
301 return 0;
302 }
303 if (filter.oifmask) {
304 int oif = 0;
56f5daac 305
aba5acdf 306 if (tb[RTA_OIF])
9f1370c0 307 oif = rta_getattr_u32(tb[RTA_OIF]);
aba5acdf
SH		 308 if ((oif^filter.oif)&filter.oifmask)
309 return 0;
310 }
b0373bfb
ED		 311 if (filter.markmask) {
312 int mark = 0;
56f5daac 313
b0373bfb 314 if (tb[RTA_MARK])
9f1370c0 315 mark = rta_getattr_u32(tb[RTA_MARK]);
b0373bfb
ED		 316 if ((mark ^ filter.mark) & filter.markmask)
317 return 0;
318 }
ed7fdc95
AZ		 319 if (filter.metricmask) {
320 __u32 metric = 0;
321
322 if (tb[RTA_PRIORITY])
323 metric = rta_getattr_u32(tb[RTA_PRIORITY]);
324 if ((metric ^ filter.metric) & filter.metricmask)
325 return 0;
326 }
ae665a52 327 if (filter.flushb &&
aba5acdf
SH		 328 r->rtm_family == AF_INET6 &&
329 r->rtm_dst_len == 0 &&
330 r->rtm_type == RTN_UNREACHABLE &&
331 tb[RTA_PRIORITY] &&
9f1370c0 332 rta_getattr_u32(tb[RTA_PRIORITY]) == -1)
aba5acdf
SH		 333 return 0;
334
f4ff11e3
DS		 335 return 1;
336}
337
29d1f730
FW		 338static void print_rtax_features(FILE *fp, unsigned int features)
339{
340 unsigned int of = features;
341
342 if (features & RTAX_FEATURE_ECN) {
663c3cb2 343 print_null(PRINT_ANY, "ecn", "ecn ", NULL);
29d1f730
FW		 344 features &= ~RTAX_FEATURE_ECN;
345 }
346
347 if (features)
663c3cb2 348 print_0xhex(PRINT_ANY,
90c5c969 349 "features", "%#llx ", of);
29d1f730
FW		 350}
351
48a1e96d 352void print_rt_flags(FILE *fp, unsigned int flags)
b3ab1e68 353{
663c3cb2
SH		 354 open_json_array(PRINT_JSON,
355 is_json_context() ? "flags" : "");
356
b3ab1e68 357 if (flags & RTNH_F_DEAD)
663c3cb2 358 print_string(PRINT_ANY, NULL, "%s ", "dead");
b3ab1e68 359 if (flags & RTNH_F_ONLINK)
663c3cb2 360 print_string(PRINT_ANY, NULL, "%s ", "onlink");
b3ab1e68 361 if (flags & RTNH_F_PERVASIVE)
663c3cb2 362 print_string(PRINT_ANY, NULL, "%s ", "pervasive");
b3ab1e68 363 if (flags & RTNH_F_OFFLOAD)
663c3cb2
SH		 364 print_string(PRINT_ANY, NULL, "%s ", "offload");
365 if (flags & RTM_F_NOTIFY)
366 print_string(PRINT_ANY, NULL, "%s ", "notify");
b3ab1e68 367 if (flags & RTNH_F_LINKDOWN)
663c3cb2 368 print_string(PRINT_ANY, NULL, "%s ", "linkdown");
b3ab1e68 369 if (flags & RTNH_F_UNRESOLVED)
663c3cb2
SH		 370 print_string(PRINT_ANY, NULL, "%s ", "unresolved");
371
372 close_json_array(PRINT_JSON, NULL);
b3ab1e68
SH		 373}
374
8cfc2d47
SH		 375static void print_rt_pref(FILE *fp, unsigned int pref)
376{
8cfc2d47
SH		 377
378 switch (pref) {
379 case ICMPV6_ROUTER_PREF_LOW:
663c3cb2
SH		 380 print_string(PRINT_ANY,
381 "pref", "pref %s", "low");
8cfc2d47
SH		 382 break;
383 case ICMPV6_ROUTER_PREF_MEDIUM:
663c3cb2
SH		 384 print_string(PRINT_ANY,
385 "pref", "pref %s", "medium");
8cfc2d47
SH		 386 break;
387 case ICMPV6_ROUTER_PREF_HIGH:
663c3cb2
SH		 388 print_string(PRINT_ANY,
389 "pref", "pref %s", "high");
8cfc2d47
SH		 390 break;
391 default:
663c3cb2
SH		 392 print_uint(PRINT_ANY,
393 "pref", "%u", pref);
8cfc2d47
SH		 394 }
395}
396
48a1e96d 397void print_rta_if(FILE *fp, const struct rtattr *rta, const char *prefix)
1506d8d3
SH		 398{
399 const char *ifname = ll_index_to_name(rta_getattr_u32(rta));
400
663c3cb2
SH		 401 if (is_json_context())
402 print_string(PRINT_JSON, prefix, NULL, ifname);
403 else {
404 fprintf(fp, "%s ", prefix);
405 color_fprintf(fp, COLOR_IFNAME, "%s ", ifname);
406 }
1506d8d3
SH		 407}
408
daf30f6f
SH		 409static void print_cache_flags(FILE *fp, __u32 flags)
410{
663c3cb2 411 json_writer_t *jw = get_json_writer();
daf30f6f
SH		 412 flags &= ~0xFFFF;
413
663c3cb2
SH		 414 if (jw) {
415 jsonw_name(jw, "cache");
416 jsonw_start_array(jw);
417 } else {
418 fprintf(fp, "%s cache ", _SL_);
419 if (flags == 0)
420 return;
421 putc('<', fp);
422 }
daf30f6f
SH		 423
424#define PRTFL(fl, flname) \
425 if (flags & RTCF_##fl) { \
426 flags &= ~RTCF_##fl; \
663c3cb2
SH		 427 if (jw) \
428 jsonw_string(jw, flname); \
429 else \
430 fprintf(fp, "%s%s", flname, flags ? "," : "> "); \
daf30f6f
SH		 431 }
432
433 PRTFL(LOCAL, "local");
434 PRTFL(REJECT, "reject");
435 PRTFL(MULTICAST, "mc");
436 PRTFL(BROADCAST, "brd");
437 PRTFL(DNAT, "dst-nat");
438 PRTFL(SNAT, "src-nat");
439 PRTFL(MASQ, "masq");
440 PRTFL(DIRECTDST, "dst-direct");
441 PRTFL(DIRECTSRC, "src-direct");
442 PRTFL(REDIRECTED, "redirected");
443 PRTFL(DOREDIRECT, "redirect");
444 PRTFL(FAST, "fastroute");
445 PRTFL(NOTIFY, "notify");
446 PRTFL(TPROXY, "proxy");
447#undef PRTFL
448
449 if (flags)
663c3cb2
SH		 450 print_hex(PRINT_ANY, "flags", "%x>", flags);
451
a0a639d9 452 if (jw)
663c3cb2 453 jsonw_end_array(jw);
daf30f6f
SH		 454}
455
6e41810e
SH		 456static void print_rta_cacheinfo(FILE *fp, const struct rta_cacheinfo *ci)
457{
458 static int hz;
459
460 if (!hz)
461 hz = get_user_hz();
663c3cb2 462
6e41810e 463 if (ci->rta_expires != 0)
39d16a02
DA		 464 print_int(PRINT_ANY, "expires",
465 "expires %dsec ", ci->rta_expires/hz);
6e41810e 466 if (ci->rta_error != 0)
663c3cb2
SH		 467 print_uint(PRINT_ANY, "error",
468 "error %u ", ci->rta_error);
469
6e41810e
SH		 470 if (show_stats) {
471 if (ci->rta_clntref)
663c3cb2
SH		 472 print_uint(PRINT_ANY, "users",
473 "users %u ", ci->rta_clntref);
6e41810e 474 if (ci->rta_used != 0)
663c3cb2
SH		 475 print_uint(PRINT_ANY, "used",
476 "used %u ", ci->rta_used);
6e41810e 477 if (ci->rta_lastuse != 0)
663c3cb2
SH		 478 print_uint(PRINT_ANY, "age",
479 "age %usec ", ci->rta_lastuse/hz);
6e41810e
SH		 480 }
481 if (ci->rta_id)
663c3cb2 482 print_0xhex(PRINT_ANY, "ipid",
90c5c969 483 "ipid 0x%04llx ", ci->rta_id);
663c3cb2
SH		 484 if (ci->rta_ts || ci->rta_tsage) {
485 print_0xhex(PRINT_ANY, "ts",
90c5c969 486 "ts 0x%llx", ci->rta_ts);
663c3cb2
SH		 487 print_uint(PRINT_ANY, "tsage",
488 "tsage %usec ", ci->rta_tsage);
489 }
6e41810e
SH		 490}
491
5782965a
SH		 492static void print_rta_flow(FILE *fp, const struct rtattr *rta)
493{
494 __u32 to = rta_getattr_u32(rta);
495 __u32 from = to >> 16;
496 SPRINT_BUF(b1);
497
498 to &= 0xFFFF;
663c3cb2
SH		 499 if (is_json_context()) {
500 open_json_object("flow");
501
502 if (from)
503 print_string(PRINT_JSON, "from", NULL,
504 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
505 print_string(PRINT_JSON, "to", NULL,
506 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
507 close_json_object();
508 } else {
509 fprintf(fp, "realm%s ", from ? "s" : "");
510
511 if (from)
512 print_string(PRINT_FP, NULL, "%s/",
513 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
514 print_string(PRINT_FP, NULL, "%s ",
515 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
5782965a 516 }
5782965a
SH		 517}
518
a3484a9f
SH		 519static void print_rta_newdst(FILE *fp, const struct rtmsg *r,
520 const struct rtattr *rta)
521{
522 const char *newdst = format_host_rta(r->rtm_family, rta);
523
663c3cb2
SH		 524 if (is_json_context())
525 print_string(PRINT_JSON, "to", NULL, newdst);
526 else {
527 fprintf(fp, "as to ");
528 print_color_string(PRINT_FP,
529 ifa_family_color(r->rtm_family),
530 NULL, "%s ", newdst);
531 }
a3484a9f
SH		 532}
533
48a1e96d 534void print_rta_gateway(FILE *fp, unsigned char family, const struct rtattr *rta)
a3484a9f 535{
48a1e96d 536 const char *gateway = format_host_rta(family, rta);
a3484a9f 537
663c3cb2
SH		 538 if (is_json_context())
539 print_string(PRINT_JSON, "gateway", NULL, gateway);
540 else {
541 fprintf(fp, "via ");
542 print_color_string(PRINT_FP,
48a1e96d 543 ifa_family_color(family),
663c3cb2
SH		 544 NULL, "%s ", gateway);
545 }
a3484a9f
SH		 546}
547
548static void print_rta_via(FILE *fp, const struct rtattr *rta)
549{
663c3cb2 550 size_t len = RTA_PAYLOAD(rta) - 2;
a3484a9f 551 const struct rtvia *via = RTA_DATA(rta);
a3484a9f 552
663c3cb2
SH		 553 if (is_json_context()) {
554 open_json_object("via");
555 print_string(PRINT_JSON, "family", NULL,
556 family_name(via->rtvia_family));
557 print_string(PRINT_JSON, "host", NULL,
558 format_host(via->rtvia_family, len,
559 via->rtvia_addr));
560 close_json_object();
561 } else {
562 print_string(PRINT_FP, NULL, "via %s ",
563 family_name(via->rtvia_family));
564 print_color_string(PRINT_FP,
565 ifa_family_color(via->rtvia_family),
566 NULL, "%s ",
567 format_host(via->rtvia_family,
568 len, via->rtvia_addr));
569 }
a3484a9f
SH		 570}
571
968272e7
SH		 572static void print_rta_metrics(FILE *fp, const struct rtattr *rta)
573{
574 struct rtattr *mxrta[RTAX_MAX+1];
575 unsigned int mxlock = 0;
576 int i;
577
663c3cb2 578 open_json_array(PRINT_JSON, "metrics");
89ce8012 579 open_json_object(NULL);
663c3cb2 580
968272e7
SH		 581 parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta));
582
583 if (mxrta[RTAX_LOCK])
584 mxlock = rta_getattr_u32(mxrta[RTAX_LOCK]);
585
586 for (i = 2; i <= RTAX_MAX; i++) {
587 __u32 val = 0U;
588
589 if (mxrta[i] == NULL && !(mxlock & (1 << i)))
590 continue;
591
592 if (mxrta[i] != NULL && i != RTAX_CC_ALGO)
593 val = rta_getattr_u32(mxrta[i]);
594
595 if (i == RTAX_HOPLIMIT && (int)val == -1)
596 continue;
597
663c3cb2
SH		 598 if (!is_json_context()) {
599 if (i < sizeof(mx_names)/sizeof(char *) && mx_names[i])
600 fprintf(fp, "%s ", mx_names[i]);
601 else
602 fprintf(fp, "metric %d ", i);
968272e7 603
663c3cb2
SH		 604 if (mxlock & (1<<i))
605 fprintf(fp, "lock ");
606 }
968272e7
SH		 607
608 switch (i) {
609 case RTAX_FEATURES:
610 print_rtax_features(fp, val);
611 break;
612 default:
89ce8012 613 print_uint(PRINT_ANY, mx_names[i], "%u ", val);
968272e7
SH		 614 break;
615
616 case RTAX_RTT:
617 case RTAX_RTTVAR:
618 case RTAX_RTO_MIN:
619 if (i == RTAX_RTT)
620 val /= 8;
621 else if (i == RTAX_RTTVAR)
622 val /= 4;
623
663c3cb2
SH		 624 if (is_json_context())
625 print_uint(PRINT_JSON, mx_names[i],
626 NULL, val);
627 else {
628 if (val >= 1000)
629 fprintf(fp, "%gs ", val/1e3);
630 else
631 fprintf(fp, "%ums ", val);
632 }
968272e7
SH		 633 break;
634 case RTAX_CC_ALGO:
663c3cb2
SH		 635 print_string(PRINT_ANY, "congestion",
636 "%s ", rta_getattr_str(mxrta[i]));
968272e7
SH		 637 break;
638 }
639 }
663c3cb2 640
89ce8012 641 close_json_object();
663c3cb2 642 close_json_array(PRINT_JSON, NULL);
968272e7
SH		 643}
644
f48e1488
SH		 645static void print_rta_multipath(FILE *fp, const struct rtmsg *r,
646 struct rtattr *rta)
647{
648 const struct rtnexthop *nh = RTA_DATA(rta);
649 int len = RTA_PAYLOAD(rta);
650 int first = 1;
651
c0ec7c9f 652 while (len >= sizeof(*nh)) {
f48e1488
SH		 653 struct rtattr *tb[RTA_MAX + 1];
654
655 if (nh->rtnh_len > len)
656 break;
657
663c3cb2
SH		 658 if (!is_json_context()) {
659 if ((r->rtm_flags & RTM_F_CLONED) &&
660 r->rtm_type == RTN_MULTICAST) {
661 if (first) {
662 fprintf(fp, "Oifs: ");
663 first = 0;
664 } else {
665 fprintf(fp, " ");
666 }
667 } else
668 fprintf(fp, "%s\tnexthop ", _SL_);
669 }
f48e1488
SH		 670
671 if (nh->rtnh_len > sizeof(*nh)) {
672 parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh),
673 nh->rtnh_len - sizeof(*nh));
674
675 if (tb[RTA_ENCAP])
676 lwt_print_encap(fp,
677 tb[RTA_ENCAP_TYPE],
678 tb[RTA_ENCAP]);
679 if (tb[RTA_NEWDST])
680 print_rta_newdst(fp, r, tb[RTA_NEWDST]);
681 if (tb[RTA_GATEWAY])
48a1e96d
DA		 682 print_rta_gateway(fp, r->rtm_family,
683 tb[RTA_GATEWAY]);
f48e1488
SH		 684 if (tb[RTA_VIA])
685 print_rta_via(fp, tb[RTA_VIA]);
686 if (tb[RTA_FLOW])
687 print_rta_flow(fp, tb[RTA_FLOW]);
688 }
689
80d1c528
SH		 690 if ((r->rtm_flags & RTM_F_CLONED) &&
691 r->rtm_type == RTN_MULTICAST) {
f48e1488
SH		 692 fprintf(fp, "%s", ll_index_to_name(nh->rtnh_ifindex));
693 if (nh->rtnh_hops != 1)
694 fprintf(fp, "(ttl>%d)", nh->rtnh_hops);
695 fprintf(fp, " ");
696 } else {
663c3cb2 697 fprintf(fp, "dev %s ", ll_index_to_name(nh->rtnh_ifindex));
f48e1488
SH		 698 if (r->rtm_family != AF_MPLS)
699 fprintf(fp, "weight %d ",
700 nh->rtnh_hops+1);
701 }
702
703 print_rt_flags(fp, nh->rtnh_flags);
704
705 len -= NLMSG_ALIGN(nh->rtnh_len);
706 nh = RTNH_NEXT(nh);
707 }
708}
709
cd554f2c 710int print_route(struct nlmsghdr *n, void *arg)
f4ff11e3 711{
56f5daac 712 FILE *fp = (FILE *)arg;
f4ff11e3
DS		 713 struct rtmsg *r = NLMSG_DATA(n);
714 int len = n->nlmsg_len;
56f5daac 715 struct rtattr *tb[RTA_MAX+1];
663c3cb2 716 int family, color, host_len;
f4ff11e3 717 __u32 table;
2f406f2d 718 int ret;
56f5daac 719
f4ff11e3 720 SPRINT_BUF(b1);
f4ff11e3
DS		 721
722 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
723 fprintf(stderr, "Not a route: %08x %08x %08x\n",
724 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
ba7b9777 725 return -1;
f4ff11e3
DS		 726 }
727 if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
728 return 0;
729 len -= NLMSG_LENGTH(sizeof(*r));
730 if (len < 0) {
731 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
732 return -1;
733 }
734
f3a2ddc1 735 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 736
737 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
738 table = rtm_get_table(r, tb);
739
740 if (!filter_nlmsg(n, tb, host_len))
741 return 0;
742
aba5acdf
SH		 743 if (filter.flushb) {
744 struct nlmsghdr *fn;
56f5daac 745
aba5acdf 746 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
cc560825
SH		 747 ret = flush_update();
748 if (ret < 0)
2f406f2d 749 return ret;
aba5acdf 750 }
56f5daac 751 fn = (struct nlmsghdr *)(filter.flushb + NLMSG_ALIGN(filter.flushp));
aba5acdf
SH		 752 memcpy(fn, n, n->nlmsg_len);
753 fn->nlmsg_type = RTM_DELROUTE;
754 fn->nlmsg_flags = NLM_F_REQUEST;
351efcde 755 fn->nlmsg_seq = ++rth.seq;
56f5daac 756 filter.flushp = (((char *)fn) + n->nlmsg_len) - filter.flushb;
aba5acdf
SH		 757 filter.flushed++;
758 if (show_stats < 2)
759 return 0;
760 }
761
663c3cb2 762 open_json_object(NULL);
aba5acdf 763 if (n->nlmsg_type == RTM_DELROUTE)
663c3cb2
SH		 764 print_bool(PRINT_ANY, "deleted", "Deleted ", true);
765
d84b1878
DA		 766 if ((r->rtm_type != RTN_UNICAST || show_details > 0) &&
767 (!filter.typemask || (filter.typemask & (1 << r->rtm_type))))
07366177 768 print_string(PRINT_ANY, "type", "%s ",
663c3cb2 769 rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
aba5acdf 770
663c3cb2 771 color = COLOR_NONE;
aba5acdf 772 if (tb[RTA_DST]) {
56e3eb4c 773 family = get_real_family(r->rtm_type, r->rtm_family);
663c3cb2
SH		 774 color = ifa_family_color(family);
775
aba5acdf 776 if (r->rtm_dst_len != host_len) {
663c3cb2
SH		 777 snprintf(b1, sizeof(b1),
778 "%s/%u", rt_addr_n2a_rta(family, tb[RTA_DST]),
779 r->rtm_dst_len);
aba5acdf 780 } else {
663c3cb2
SH		 781 format_host_rta_r(family, tb[RTA_DST],
782 b1, sizeof(b1));
783
aba5acdf
SH		 784 }
785 } else if (r->rtm_dst_len) {
663c3cb2 786 snprintf(b1, sizeof(b1), "0/%d ", r->rtm_dst_len);
aba5acdf 787 } else {
663c3cb2 788 strncpy(b1, "default", sizeof(b1));
aba5acdf 789 }
663c3cb2
SH		 790 print_color_string(PRINT_ANY, color,
791 "dst", "%s ", b1);
792
aba5acdf 793 if (tb[RTA_SRC]) {
56e3eb4c 794 family = get_real_family(r->rtm_type, r->rtm_family);
663c3cb2
SH		 795 color = ifa_family_color(family);
796
aba5acdf 797 if (r->rtm_src_len != host_len) {
663c3cb2
SH		 798 snprintf(b1, sizeof(b1),
799 "%s/%u",
800 rt_addr_n2a_rta(family, tb[RTA_SRC]),
801 r->rtm_src_len);
aba5acdf 802 } else {
663c3cb2
SH		 803 format_host_rta_r(family, tb[RTA_SRC],
804 b1, sizeof(b1));
aba5acdf 805 }
663c3cb2
SH		 806 print_color_string(PRINT_ANY, color,
807 "from", "from %s ", b1);
aba5acdf 808 } else if (r->rtm_src_len) {
663c3cb2
SH		 809 snprintf(b1, sizeof(b1), "0/%u", r->rtm_src_len);
810
811 print_string(PRINT_ANY, "src", "from %s ", b1);
aba5acdf 812 }
a3484a9f 813
12387e2c
DA		 814 if (tb[RTA_NH_ID])
815 print_uint(PRINT_ANY, "nhid", "nhid %u ",
816 rta_getattr_u32(tb[RTA_NH_ID]));
817
a3484a9f
SH		 818 if (tb[RTA_NEWDST])
819 print_rta_newdst(fp, r, tb[RTA_NEWDST]);
1e529305
RP		 820
821 if (tb[RTA_ENCAP])
822 lwt_print_encap(fp, tb[RTA_ENCAP_TYPE], tb[RTA_ENCAP]);
823
aba5acdf 824 if (r->rtm_tos && filter.tosmask != -1) {
663c3cb2
SH		 825 print_string(PRINT_ANY, "tos", "tos %s ",
826 rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
aba5acdf 827 }
02d2ae55 828
a3484a9f 829 if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len)
48a1e96d 830 print_rta_gateway(fp, r->rtm_family, tb[RTA_GATEWAY]);
a3484a9f
SH		 831
832 if (tb[RTA_VIA])
833 print_rta_via(fp, tb[RTA_VIA]);
56f5daac 834
aba5acdf 835 if (tb[RTA_OIF] && filter.oifmask != -1)
663c3cb2 836 print_rta_if(fp, tb[RTA_OIF], "dev");
aba5acdf 837
bc234301 838 if (table && (table != RT_TABLE_MAIN || show_details > 0) && !filter.tb)
663c3cb2
SH		 839 print_string(PRINT_ANY,
840 "table", "table %s ",
841 rtnl_rttable_n2a(table, b1, sizeof(b1)));
842
80d1c528 843 if (!(r->rtm_flags & RTM_F_CLONED)) {
663c3cb2
SH		 844 if ((r->rtm_protocol != RTPROT_BOOT || show_details > 0) &&
845 filter.protocolmask != -1)
846 print_string(PRINT_ANY,
847 "protocol", "proto %s ",
848 rtnl_rtprot_n2a(r->rtm_protocol,
849 b1, sizeof(b1)));
850
851 if ((r->rtm_scope != RT_SCOPE_UNIVERSE || show_details > 0) &&
852 filter.scopemask != -1)
853 print_string(PRINT_ANY,
854 "scope", "scope %s ",
855 rtnl_rtscope_n2a(r->rtm_scope,
856 b1, sizeof(b1)));
aba5acdf 857 }
663c3cb2 858
aba5acdf 859 if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
663c3cb2
SH		 860 const char *psrc
861 = rt_addr_n2a_rta(r->rtm_family, tb[RTA_PREFSRC]);
862
aba5acdf
SH		 863 /* Do not use format_host(). It is our local addr
864 and symbolic name will not be useful.
663c3cb2
SH		 865 */
866 if (is_json_context())
867 print_string(PRINT_JSON, "prefsrc", NULL, psrc);
868 else {
869 fprintf(fp, "src ");
870 print_color_string(PRINT_FP,
871 ifa_family_color(r->rtm_family),
872 NULL, "%s ", psrc);
873 }
874
aba5acdf 875 }
663c3cb2 876
ed7fdc95 877 if (tb[RTA_PRIORITY] && filter.metricmask != -1)
663c3cb2
SH		 878 print_uint(PRINT_ANY, "metric", "metric %u ",
879 rta_getattr_u32(tb[RTA_PRIORITY]));
b3ab1e68
SH		 880
881 print_rt_flags(fp, r->rtm_flags);
882
b0373bfb 883 if (tb[RTA_MARK]) {
9f1370c0 884 unsigned int mark = rta_getattr_u32(tb[RTA_MARK]);
56f5daac 885
b0373bfb 886 if (mark) {
663c3cb2
SH		 887 if (is_json_context())
888 print_uint(PRINT_JSON, "mark", NULL, mark);
889 else if (mark >= 16)
890 print_0xhex(PRINT_FP, NULL,
90c5c969 891 "mark 0x%llx ", mark);
b0373bfb 892 else
663c3cb2
SH		 893 print_uint(PRINT_FP, NULL,
894 "mark %u ", mark);
b0373bfb
ED		 895 }
896 }
aba5acdf 897
5782965a
SH		 898 if (tb[RTA_FLOW] && filter.realmmask != ~0U)
899 print_rta_flow(fp, tb[RTA_FLOW]);
82252cdc
LC		 900
901 if (tb[RTA_UID])
663c3cb2
SH		 902 print_uint(PRINT_ANY, "uid", "uid %u ",
903 rta_getattr_u32(tb[RTA_UID]));
daf30f6f 904
663c3cb2 905 if (r->rtm_family == AF_INET) {
9107c425 906 if (r->rtm_flags & RTM_F_CLONED)
663c3cb2 907 print_cache_flags(fp, r->rtm_flags);
6e41810e 908
9107c425
DA		 909 if (tb[RTA_CACHEINFO])
910 print_rta_cacheinfo(fp, RTA_DATA(tb[RTA_CACHEINFO]));
aba5acdf 911 } else if (r->rtm_family == AF_INET6) {
9107c425
DA		 912 if (tb[RTA_CACHEINFO])
913 print_rta_cacheinfo(fp, RTA_DATA(tb[RTA_CACHEINFO]));
aba5acdf 914 }
6e41810e 915
968272e7
SH		 916 if (tb[RTA_METRICS])
917 print_rta_metrics(fp, tb[RTA_METRICS]);
aba5acdf 918
1506d8d3
SH		 919 if (tb[RTA_IIF] && filter.iifmask != -1)
920 print_rta_if(fp, tb[RTA_IIF], "iif");
b3ab1e68 921
f48e1488
SH		 922 if (tb[RTA_MULTIPATH])
923 print_rta_multipath(fp, r, tb[RTA_MULTIPATH]);
8cfc2d47
SH		 924
925 if (tb[RTA_PREF])
926 print_rt_pref(fp, rta_getattr_u8(tb[RTA_PREF]));
927
c44d18ea 928 if (tb[RTA_TTL_PROPAGATE]) {
94b0c901 929 bool propagate = rta_getattr_u8(tb[RTA_TTL_PROPAGATE]);
663c3cb2
SH		 930
931 if (is_json_context())
932 print_bool(PRINT_JSON, "ttl-propogate", NULL,
94b0c901 933 propagate);
c44d18ea 934 else
663c3cb2
SH		 935 print_string(PRINT_FP, NULL,
936 "ttl-propogate %s",
94b0c901 937 propagate ? "enabled" : "disabled");
c44d18ea 938 }
663c3cb2
SH		 939
940 print_string(PRINT_FP, NULL, "\n", NULL);
941 close_json_object();
aba5acdf
SH		 942 fflush(fp);
943 return 0;
944}
945
1e529305 946static int parse_one_nh(struct nlmsghdr *n, struct rtmsg *r,
bd59e5b1 947 struct rtattr *rta, size_t len, struct rtnexthop *rtnh,
d1f28cf1 948 int *argcp, char ***argvp)
aba5acdf
SH		 949{
950 int argc = *argcp;
951 char **argv = *argvp;
952
953 while (++argv, --argc > 0) {
954 if (strcmp(*argv, "via") == 0) {
4d6c3796 955 inet_prefix addr;
93ae2835 956 int family;
56f5daac 957
aba5acdf 958 NEXT_ARG();
93ae2835
EB		 959 family = read_family(*argv);
960 if (family == AF_UNSPEC)
961 family = r->rtm_family;
962 else
963 NEXT_ARG();
964 get_addr(&addr, *argv, family);
4d6c3796
VB		 965 if (r->rtm_family == AF_UNSPEC)
966 r->rtm_family = addr.family;
93ae2835 967 if (addr.family == r->rtm_family) {
bd59e5b1
PS		 968 if (rta_addattr_l(rta, len, RTA_GATEWAY,
969 &addr.data, addr.bytelen))
970 return -1;
971 rtnh->rtnh_len += sizeof(struct rtattr)
972 + addr.bytelen;
93ae2835 973 } else {
bd59e5b1
PS		 974 if (rta_addattr_l(rta, len, RTA_VIA,
975 &addr.family, addr.bytelen + 2))
976 return -1;
977 rtnh->rtnh_len += RTA_SPACE(addr.bytelen + 2);
93ae2835 978 }
aba5acdf
SH		 979 } else if (strcmp(*argv, "dev") == 0) {
980 NEXT_ARG();
cc560825 981 rtnh->rtnh_ifindex = ll_name_to_index(*argv);
fe99adbc
SP		 982 if (!rtnh->rtnh_ifindex)
983 return nodev(*argv);
aba5acdf 984 } else if (strcmp(*argv, "weight") == 0) {
56f5daac
SH		 985 unsigned int w;
986
aba5acdf
SH		 987 NEXT_ARG();
988 if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
989 invarg("\"weight\" is invalid\n", *argv);
990 rtnh->rtnh_hops = w - 1;
991 } else if (strcmp(*argv, "onlink") == 0) {
992 rtnh->rtnh_flags |= RTNH_F_ONLINK;
f4f6d640
PM		 993 } else if (matches(*argv, "realms") == 0) {
994 __u32 realm;
56f5daac 995
f4f6d640 996 NEXT_ARG();
d583e88e 997 if (get_rt_realms_or_raw(&realm, *argv))
f4f6d640 998 invarg("\"realm\" value is invalid\n", *argv);
bd59e5b1
PS		 999 if (rta_addattr32(rta, len, RTA_FLOW, realm))
1000 return -1;
f4f6d640 1001 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
1e529305 1002 } else if (strcmp(*argv, "encap") == 0) {
bd59e5b1 1003 int old_len = rta->rta_len;
1e529305 1004
73924010
DA		 1005 if (lwt_parse_encap(rta, len, &argc, &argv,
1006 RTA_ENCAP, RTA_ENCAP_TYPE))
bd59e5b1
PS		 1007 return -1;
1008 rtnh->rtnh_len += rta->rta_len - old_len;
ecc509f9
RP		 1009 } else if (strcmp(*argv, "as") == 0) {
1010 inet_prefix addr;
1011
1012 NEXT_ARG();
1013 if (strcmp(*argv, "to") == 0)
1014 NEXT_ARG();
1015 get_addr(&addr, *argv, r->rtm_family);
bd59e5b1
PS		 1016 if (rta_addattr_l(rta, len, RTA_NEWDST,
1017 &addr.data, addr.bytelen))
1018 return -1;
ecc509f9 1019 rtnh->rtnh_len += sizeof(struct rtattr) + addr.bytelen;
aba5acdf
SH		 1020 } else
1021 break;
1022 }
1023 *argcp = argc;
1024 *argvp = argv;
1025 return 0;
1026}
1027
d1f28cf1
SH		 1028static int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r,
1029 int argc, char **argv)
aba5acdf 1030{
bd59e5b1 1031 char buf[4096];
56f5daac 1032 struct rtattr *rta = (void *)buf;
aba5acdf
SH		 1033 struct rtnexthop *rtnh;
1034
1035 rta->rta_type = RTA_MULTIPATH;
1036 rta->rta_len = RTA_LENGTH(0);
1037 rtnh = RTA_DATA(rta);
1038
1039 while (argc > 0) {
1040 if (strcmp(*argv, "nexthop") != 0) {
1041 fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
1042 exit(-1);
1043 }
1044 if (argc <= 1) {
1045 fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
1046 exit(-1);
1047 }
1048 memset(rtnh, 0, sizeof(*rtnh));
1049 rtnh->rtnh_len = sizeof(*rtnh);
1050 rta->rta_len += rtnh->rtnh_len;
bd59e5b1 1051 if (parse_one_nh(n, r, rta, 4096, rtnh, &argc, &argv)) {
ee53b42f
JS		 1052 fprintf(stderr, "Error: cannot parse nexthop\n");
1053 exit(-1);
1054 }
aba5acdf
SH		 1055 rtnh = RTNH_NEXT(rtnh);
1056 }
1057
1058 if (rta->rta_len > RTA_LENGTH(0))
bd59e5b1
PS		 1059 return addattr_l(n, 4096, RTA_MULTIPATH,
1060 RTA_DATA(rta), RTA_PAYLOAD(rta));
aba5acdf
SH		 1061 return 0;
1062}
1063
56f5daac 1064static int iproute_modify(int cmd, unsigned int flags, int argc, char **argv)
aba5acdf 1065{
aba5acdf 1066 struct {
4806867a
SH		 1067 struct nlmsghdr n;
1068 struct rtmsg r;
bd59e5b1 1069 char buf[4096];
d17b136f
PS		 1070 } req = {
1071 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)),
1072 .n.nlmsg_flags = NLM_F_REQUEST | flags,
1073 .n.nlmsg_type = cmd,
1074 .r.rtm_family = preferred_family,
1075 .r.rtm_table = RT_TABLE_MAIN,
1076 .r.rtm_scope = RT_SCOPE_NOWHERE,
1077 };
aba5acdf 1078 char mxbuf[256];
56f5daac
SH		 1079 struct rtattr *mxrta = (void *)mxbuf;
1080 unsigned int mxlock = 0;
aba5acdf
SH		 1081 char *d = NULL;
1082 int gw_ok = 0;
1083 int dst_ok = 0;
1084 int nhs_ok = 0;
1085 int scope_ok = 0;
1086 int table_ok = 0;
54e0b2e7 1087 int raw = 0;
f638e9f7 1088 int type_ok = 0;
12387e2c 1089 __u32 nhid = 0;
aba5acdf 1090
aba5acdf
SH		 1091 if (cmd != RTM_DELROUTE) {
1092 req.r.rtm_protocol = RTPROT_BOOT;
1093 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
1094 req.r.rtm_type = RTN_UNICAST;
1095 }
1096
1097 mxrta->rta_type = RTA_METRICS;
1098 mxrta->rta_len = RTA_LENGTH(0);
1099
1100 while (argc > 0) {
1101 if (strcmp(*argv, "src") == 0) {
1102 inet_prefix addr;
56f5daac 1103
aba5acdf
SH		 1104 NEXT_ARG();
1105 get_addr(&addr, *argv, req.r.rtm_family);
1106 if (req.r.rtm_family == AF_UNSPEC)
1107 req.r.rtm_family = addr.family;
21fef525
SH		 1108 addattr_l(&req.n, sizeof(req),
1109 RTA_PREFSRC, &addr.data, addr.bytelen);
6f7a9f4d
EB		 1110 } else if (strcmp(*argv, "as") == 0) {
1111 inet_prefix addr;
56f5daac 1112
6f7a9f4d
EB		 1113 NEXT_ARG();
1114 if (strcmp(*argv, "to") == 0) {
1115 NEXT_ARG();
1116 }
1117 get_addr(&addr, *argv, req.r.rtm_family);
1118 if (req.r.rtm_family == AF_UNSPEC)
1119 req.r.rtm_family = addr.family;
21fef525
SH		 1120 addattr_l(&req.n, sizeof(req),
1121 RTA_NEWDST, &addr.data, addr.bytelen);
aba5acdf
SH		 1122 } else if (strcmp(*argv, "via") == 0) {
1123 inet_prefix addr;
93ae2835 1124 int family;
56f5daac 1125
11f2c753
DA		 1126 if (gw_ok) {
1127 invarg("use nexthop syntax to specify multiple via\n",
1128 *argv);
1129 }
aba5acdf
SH		 1130 gw_ok = 1;
1131 NEXT_ARG();
93ae2835
EB		 1132 family = read_family(*argv);
1133 if (family == AF_UNSPEC)
1134 family = req.r.rtm_family;
1135 else
1136 NEXT_ARG();
1137 get_addr(&addr, *argv, family);
aba5acdf
SH		 1138 if (req.r.rtm_family == AF_UNSPEC)
1139 req.r.rtm_family = addr.family;
93ae2835 1140 if (addr.family == req.r.rtm_family)
ecc509f9
RP		 1141 addattr_l(&req.n, sizeof(req), RTA_GATEWAY,
1142 &addr.data, addr.bytelen);
93ae2835 1143 else
ecc509f9
RP		 1144 addattr_l(&req.n, sizeof(req), RTA_VIA,
1145 &addr.family, addr.bytelen+2);
aba5acdf
SH		 1146 } else if (strcmp(*argv, "from") == 0) {
1147 inet_prefix addr;
56f5daac 1148
aba5acdf
SH		 1149 NEXT_ARG();
1150 get_prefix(&addr, *argv, req.r.rtm_family);
1151 if (req.r.rtm_family == AF_UNSPEC)
1152 req.r.rtm_family = addr.family;
1153 if (addr.bytelen)
1154 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
1155 req.r.rtm_src_len = addr.bitlen;
1156 } else if (strcmp(*argv, "tos") == 0 ||
1157 matches(*argv, "dsfield") == 0) {
1158 __u32 tos;
56f5daac 1159
aba5acdf
SH		 1160 NEXT_ARG();
1161 if (rtnl_dsfield_a2n(&tos, *argv))
1162 invarg("\"tos\" value is invalid\n", *argv);
1163 req.r.rtm_tos = tos;
56f5daac 1164 } else if (strcmp(*argv, "expires") == 0) {
68eede25 1165 __u32 expires;
56f5daac 1166
68eede25
HL		 1167 NEXT_ARG();
1168 if (get_u32(&expires, *argv, 0))
1169 invarg("\"expires\" value is invalid\n", *argv);
eecc0069 1170 addattr32(&req.n, sizeof(req), RTA_EXPIRES, expires);
aba5acdf
SH		 1171 } else if (matches(*argv, "metric") == 0 ||
1172 matches(*argv, "priority") == 0 ||
194e9b85 1173 strcmp(*argv, "preference") == 0) {
aba5acdf 1174 __u32 metric;
56f5daac 1175
aba5acdf
SH		 1176 NEXT_ARG();
1177 if (get_u32(&metric, *argv, 0))
1178 invarg("\"metric\" value is invalid\n", *argv);
1179 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
1180 } else if (strcmp(*argv, "scope") == 0) {
f332d169 1181 __u32 scope = 0;
56f5daac 1182
aba5acdf
SH		 1183 NEXT_ARG();
1184 if (rtnl_rtscope_a2n(&scope, *argv))
1185 invarg("invalid \"scope\" value\n", *argv);
1186 req.r.rtm_scope = scope;
1187 scope_ok = 1;
1188 } else if (strcmp(*argv, "mtu") == 0) {
56f5daac
SH		 1189 unsigned int mtu;
1190
aba5acdf
SH		 1191 NEXT_ARG();
1192 if (strcmp(*argv, "lock") == 0) {
1193 mxlock |= (1<<RTAX_MTU);
1194 NEXT_ARG();
1195 }
1196 if (get_unsigned(&mtu, *argv, 0))
1197 invarg("\"mtu\" value is invalid\n", *argv);
1198 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
71e58151 1199 } else if (strcmp(*argv, "hoplimit") == 0) {
56f5daac
SH		 1200 unsigned int hoplimit;
1201
71e58151
GBY		 1202 NEXT_ARG();
1203 if (strcmp(*argv, "lock") == 0) {
1204 mxlock |= (1<<RTAX_HOPLIMIT);
1205 NEXT_ARG();
1206 }
ea6cbab7 1207 if (get_unsigned(&hoplimit, *argv, 0) || hoplimit > 255)
71e58151
GBY		 1208 invarg("\"hoplimit\" value is invalid\n", *argv);
1209 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit);
aba5acdf 1210 } else if (strcmp(*argv, "advmss") == 0) {
56f5daac
SH		 1211 unsigned int mss;
1212
aba5acdf
SH		 1213 NEXT_ARG();
1214 if (strcmp(*argv, "lock") == 0) {
1215 mxlock |= (1<<RTAX_ADVMSS);
1216 NEXT_ARG();
1217 }
1218 if (get_unsigned(&mss, *argv, 0))
1219 invarg("\"mss\" value is invalid\n", *argv);
1220 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
aba5acdf 1221 } else if (matches(*argv, "reordering") == 0) {
56f5daac
SH		 1222 unsigned int reord;
1223
aba5acdf
SH		 1224 NEXT_ARG();
1225 if (strcmp(*argv, "lock") == 0) {
1226 mxlock |= (1<<RTAX_REORDERING);
1227 NEXT_ARG();
1228 }
1229 if (get_unsigned(&reord, *argv, 0))
1230 invarg("\"reordering\" value is invalid\n", *argv);
1231 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
aba5acdf 1232 } else if (strcmp(*argv, "rtt") == 0) {
56f5daac
SH		 1233 unsigned int rtt;
1234
aba5acdf
SH		 1235 NEXT_ARG();
1236 if (strcmp(*argv, "lock") == 0) {
1237 mxlock |= (1<<RTAX_RTT);
1238 NEXT_ARG();
1239 }
81d03dc3 1240 if (get_time_rtt(&rtt, *argv, &raw))
aba5acdf 1241 invarg("\"rtt\" value is invalid\n", *argv);
0612519e 1242 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT,
54e0b2e7
RJ		 1243 (raw) ? rtt : rtt * 8);
1244 } else if (strcmp(*argv, "rto_min") == 0) {
56f5daac
SH		 1245 unsigned int rto_min;
1246
54e0b2e7
RJ		 1247 NEXT_ARG();
1248 mxlock |= (1<<RTAX_RTO_MIN);
81d03dc3 1249 if (get_time_rtt(&rto_min, *argv, &raw))
54e0b2e7
RJ		 1250 invarg("\"rto_min\" value is invalid\n",
1251 *argv);
1252 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN,
1253 rto_min);
aba5acdf 1254 } else if (matches(*argv, "window") == 0) {
56f5daac
SH		 1255 unsigned int win;
1256
aba5acdf
SH		 1257 NEXT_ARG();
1258 if (strcmp(*argv, "lock") == 0) {
1259 mxlock |= (1<<RTAX_WINDOW);
1260 NEXT_ARG();
1261 }
1262 if (get_unsigned(&win, *argv, 0))
1263 invarg("\"window\" value is invalid\n", *argv);
1264 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
1265 } else if (matches(*argv, "cwnd") == 0) {
56f5daac
SH		 1266 unsigned int win;
1267
aba5acdf
SH		 1268 NEXT_ARG();
1269 if (strcmp(*argv, "lock") == 0) {
1270 mxlock |= (1<<RTAX_CWND);
1271 NEXT_ARG();
1272 }
1273 if (get_unsigned(&win, *argv, 0))
1274 invarg("\"cwnd\" value is invalid\n", *argv);
1275 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
a1f1143e 1276 } else if (matches(*argv, "initcwnd") == 0) {
56f5daac
SH		 1277 unsigned int win;
1278
a1f1143e
VW		 1279 NEXT_ARG();
1280 if (strcmp(*argv, "lock") == 0) {
1281 mxlock |= (1<<RTAX_INITCWND);
1282 NEXT_ARG();
1283 }
1284 if (get_unsigned(&win, *argv, 0))
1285 invarg("\"initcwnd\" value is invalid\n", *argv);
21fef525
SH		 1286 rta_addattr32(mxrta, sizeof(mxbuf),
1287 RTAX_INITCWND, win);
f5fd8003 1288 } else if (matches(*argv, "initrwnd") == 0) {
56f5daac
SH		 1289 unsigned int win;
1290
f5fd8003 1291 NEXT_ARG();
1292 if (strcmp(*argv, "lock") == 0) {
1293 mxlock |= (1<<RTAX_INITRWND);
1294 NEXT_ARG();
1295 }
1296 if (get_unsigned(&win, *argv, 0))
1297 invarg("\"initrwnd\" value is invalid\n", *argv);
21fef525
SH		 1298 rta_addattr32(mxrta, sizeof(mxbuf),
1299 RTAX_INITRWND, win);
29d1f730
FW		 1300 } else if (matches(*argv, "features") == 0) {
1301 unsigned int features = 0;
1302
1303 while (argc > 0) {
1304 NEXT_ARG();
1305
1306 if (strcmp(*argv, "ecn") == 0)
1307 features |= RTAX_FEATURE_ECN;
1308 else
1309 invarg("\"features\" value not valid\n", *argv);
1310 break;
1311 }
1312
21fef525
SH		 1313 rta_addattr32(mxrta, sizeof(mxbuf),
1314 RTAX_FEATURES, features);
b37f2c89 1315 } else if (matches(*argv, "quickack") == 0) {
56f5daac
SH		 1316 unsigned int quickack;
1317
b37f2c89
CW		 1318 NEXT_ARG();
1319 if (get_unsigned(&quickack, *argv, 0))
1320 invarg("\"quickack\" value is invalid\n", *argv);
1321 if (quickack != 1 && quickack != 0)
1322 invarg("\"quickack\" value should be 0 or 1\n", *argv);
21fef525
SH		 1323 rta_addattr32(mxrta, sizeof(mxbuf),
1324 RTAX_QUICKACK, quickack);
6ef87f9c
DB		 1325 } else if (matches(*argv, "congctl") == 0) {
1326 NEXT_ARG();
1327 if (strcmp(*argv, "lock") == 0) {
1328 mxlock |= 1 << RTAX_CC_ALGO;
1329 NEXT_ARG();
1330 }
1331 rta_addattr_l(mxrta, sizeof(mxbuf), RTAX_CC_ALGO, *argv,
1332 strlen(*argv));
aba5acdf 1333 } else if (matches(*argv, "rttvar") == 0) {
56f5daac
SH		 1334 unsigned int win;
1335
aba5acdf
SH		 1336 NEXT_ARG();
1337 if (strcmp(*argv, "lock") == 0) {
1338 mxlock |= (1<<RTAX_RTTVAR);
1339 NEXT_ARG();
1340 }
81d03dc3 1341 if (get_time_rtt(&win, *argv, &raw))
aba5acdf 1342 invarg("\"rttvar\" value is invalid\n", *argv);
54e0b2e7
RJ		 1343 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR,
1344 (raw) ? win : win * 4);
aba5acdf 1345 } else if (matches(*argv, "ssthresh") == 0) {
56f5daac
SH		 1346 unsigned int win;
1347
aba5acdf
SH		 1348 NEXT_ARG();
1349 if (strcmp(*argv, "lock") == 0) {
1350 mxlock |= (1<<RTAX_SSTHRESH);
1351 NEXT_ARG();
1352 }
1353 if (get_unsigned(&win, *argv, 0))
1354 invarg("\"ssthresh\" value is invalid\n", *argv);
1355 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
1356 } else if (matches(*argv, "realms") == 0) {
1357 __u32 realm;
56f5daac 1358
aba5acdf 1359 NEXT_ARG();
d583e88e 1360 if (get_rt_realms_or_raw(&realm, *argv))
aba5acdf
SH		 1361 invarg("\"realm\" value is invalid\n", *argv);
1362 addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
1363 } else if (strcmp(*argv, "onlink") == 0) {
1364 req.r.rtm_flags |= RTNH_F_ONLINK;
aba5acdf
SH		 1365 } else if (strcmp(*argv, "nexthop") == 0) {
1366 nhs_ok = 1;
1367 break;
12387e2c
DA		 1368 } else if (!strcmp(*argv, "nhid")) {
1369 NEXT_ARG();
1370 if (get_u32(&nhid, *argv, 0))
1371 invarg("\"id\" value is invalid\n", *argv);
1372 addattr32(&req.n, sizeof(req), RTA_NH_ID, nhid);
aba5acdf 1373 } else if (matches(*argv, "protocol") == 0) {
f332d169 1374 __u32 prot;
56f5daac 1375
aba5acdf
SH		 1376 NEXT_ARG();
1377 if (rtnl_rtprot_a2n(&prot, *argv))
1378 invarg("\"protocol\" value is invalid\n", *argv);
1379 req.r.rtm_protocol = prot;
aba5acdf 1380 } else if (matches(*argv, "table") == 0) {
f332d169 1381 __u32 tid;
56f5daac 1382
aba5acdf
SH		 1383 NEXT_ARG();
1384 if (rtnl_rttable_a2n(&tid, *argv))
1385 invarg("\"table\" value is invalid\n", *argv);
34e95647
PM		 1386 if (tid < 256)
1387 req.r.rtm_table = tid;
1388 else {
1389 req.r.rtm_table = RT_TABLE_UNSPEC;
1390 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
1391 }
aba5acdf 1392 table_ok = 1;
0130f012
DA		 1393 } else if (matches(*argv, "vrf") == 0) {
1394 __u32 tid;
1395
1396 NEXT_ARG();
1397 tid = ipvrf_get_table(*argv);
1398 if (tid == 0)
1399 invarg("Invalid VRF\n", *argv);
1400 if (tid < 256)
1401 req.r.rtm_table = tid;
1402 else {
1403 req.r.rtm_table = RT_TABLE_UNSPEC;
1404 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
1405 }
1406 table_ok = 1;
aba5acdf
SH		 1407 } else if (strcmp(*argv, "dev") == 0 ||
1408 strcmp(*argv, "oif") == 0) {
1409 NEXT_ARG();
1410 d = *argv;
194e9b85
LR		 1411 } else if (matches(*argv, "pref") == 0) {
1412 __u8 pref;
56f5daac 1413
194e9b85
LR		 1414 NEXT_ARG();
1415 if (strcmp(*argv, "low") == 0)
1416 pref = ICMPV6_ROUTER_PREF_LOW;
1417 else if (strcmp(*argv, "medium") == 0)
1418 pref = ICMPV6_ROUTER_PREF_MEDIUM;
1419 else if (strcmp(*argv, "high") == 0)
1420 pref = ICMPV6_ROUTER_PREF_HIGH;
1421 else if (get_u8(&pref, *argv, 0))
1422 invarg("\"pref\" value is invalid\n", *argv);
1423 addattr8(&req.n, sizeof(req), RTA_PREF, pref);
1e529305
RP		 1424 } else if (strcmp(*argv, "encap") == 0) {
1425 char buf[1024];
56f5daac 1426 struct rtattr *rta = (void *)buf;
1e529305
RP		 1427
1428 rta->rta_type = RTA_ENCAP;
1429 rta->rta_len = RTA_LENGTH(0);
1430
73924010
DA		 1431 lwt_parse_encap(rta, sizeof(buf), &argc, &argv,
1432 RTA_ENCAP, RTA_ENCAP_TYPE);
1e529305
RP		 1433
1434 if (rta->rta_len > RTA_LENGTH(0))
21fef525
SH		 1435 addraw_l(&req.n, 1024
1436 , RTA_DATA(rta), RTA_PAYLOAD(rta));
c44d18ea
RS		 1437 } else if (strcmp(*argv, "ttl-propagate") == 0) {
1438 __u8 ttl_prop;
1439
1440 NEXT_ARG();
1441 if (matches(*argv, "enabled") == 0)
1442 ttl_prop = 1;
1443 else if (matches(*argv, "disabled") == 0)
1444 ttl_prop = 0;
1445 else
1446 invarg("\"ttl-propagate\" value is invalid\n",
1447 *argv);
1448
1449 addattr8(&req.n, sizeof(req), RTA_TTL_PROPAGATE,
1450 ttl_prop);
e54ed380
CP		 1451 } else if (matches(*argv, "fastopen_no_cookie") == 0) {
1452 unsigned int fastopen_no_cookie;
1453
1454 NEXT_ARG();
1455 if (get_unsigned(&fastopen_no_cookie, *argv, 0))
1456 invarg("\"fastopen_no_cookie\" value is invalid\n", *argv);
1457 if (fastopen_no_cookie != 1 && fastopen_no_cookie != 0)
1458 invarg("\"fastopen_no_cookie\" value should be 0 or 1\n", *argv);
1459 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_FASTOPEN_NO_COOKIE, fastopen_no_cookie);
aba5acdf
SH		 1460 } else {
1461 int type;
1462 inet_prefix dst;
1463
1464 if (strcmp(*argv, "to") == 0) {
1465 NEXT_ARG();
1466 }
1467 if ((**argv < '0' || **argv > '9') &&
1468 rtnl_rtntype_a2n(&type, *argv) == 0) {
1469 NEXT_ARG();
1470 req.r.rtm_type = type;
f638e9f7 1471 type_ok = 1;
aba5acdf
SH		 1472 }
1473
1474 if (matches(*argv, "help") == 0)
1475 usage();
1476 if (dst_ok)
1477 duparg2("to", *argv);
1478 get_prefix(&dst, *argv, req.r.rtm_family);
1479 if (req.r.rtm_family == AF_UNSPEC)
1480 req.r.rtm_family = dst.family;
1481 req.r.rtm_dst_len = dst.bitlen;
1482 dst_ok = 1;
1483 if (dst.bytelen)
21fef525
SH		 1484 addattr_l(&req.n, sizeof(req),
1485 RTA_DST, &dst.data, dst.bytelen);
aba5acdf
SH		 1486 }
1487 argc--; argv++;
1488 }
1489
922b4822
PS		 1490 if (!dst_ok)
1491 usage();
1492
7b201d60 1493 if (d) {
cc560825 1494 int idx = ll_name_to_index(d);
aba5acdf 1495
fe99adbc
SP		 1496 if (!idx)
1497 return nodev(d);
7b201d60 1498 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
aba5acdf
SH		 1499 }
1500
1501 if (mxrta->rta_len > RTA_LENGTH(0)) {
1502 if (mxlock)
1503 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
1504 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
1505 }
1506
bd59e5b1
PS		 1507 if (nhs_ok && parse_nexthops(&req.n, &req.r, argc, argv))
1508 return -1;
aba5acdf 1509
f638e9f7
RP		 1510 if (req.r.rtm_family == AF_UNSPEC)
1511 req.r.rtm_family = AF_INET;
1512
aba5acdf
SH		 1513 if (!table_ok) {
1514 if (req.r.rtm_type == RTN_LOCAL ||
1515 req.r.rtm_type == RTN_BROADCAST ||
1516 req.r.rtm_type == RTN_NAT ||
1517 req.r.rtm_type == RTN_ANYCAST)
1518 req.r.rtm_table = RT_TABLE_LOCAL;
1519 }
1520 if (!scope_ok) {
f638e9f7
RP		 1521 if (req.r.rtm_family == AF_INET6 ||
1522 req.r.rtm_family == AF_MPLS)
1523 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
1524 else if (req.r.rtm_type == RTN_LOCAL ||
1525 req.r.rtm_type == RTN_NAT)
aba5acdf
SH		 1526 req.r.rtm_scope = RT_SCOPE_HOST;
1527 else if (req.r.rtm_type == RTN_BROADCAST ||
1528 req.r.rtm_type == RTN_MULTICAST ||
1529 req.r.rtm_type == RTN_ANYCAST)
1530 req.r.rtm_scope = RT_SCOPE_LINK;
1531 else if (req.r.rtm_type == RTN_UNICAST ||
1532 req.r.rtm_type == RTN_UNSPEC) {
1533 if (cmd == RTM_DELROUTE)
1534 req.r.rtm_scope = RT_SCOPE_NOWHERE;
12387e2c 1535 else if (!gw_ok && !nhs_ok && !nhid)
aba5acdf
SH		 1536 req.r.rtm_scope = RT_SCOPE_LINK;
1537 }
1538 }
1539
f638e9f7
RP		 1540 if (!type_ok && req.r.rtm_family == AF_MPLS)
1541 req.r.rtm_type = RTN_UNICAST;
aba5acdf 1542
86bf43c7 1543 if (rtnl_talk(&rth, &req.n, NULL) < 0)
d58ba4ba 1544 return -2;
aba5acdf
SH		 1545
1546 return 0;
1547}
1548
aba5acdf
SH		 1549static int iproute_flush_cache(void)
1550{
1551#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1552
1553 int len;
56f5daac 1554 int flush_fd = open(ROUTE_FLUSH_PATH, O_WRONLY);
aba5acdf
SH		 1555 char *buffer = "-1";
1556
1557 if (flush_fd < 0) {
56f5daac 1558 fprintf(stderr, "Cannot open \"%s\": %s\n",
9827fa57 1559 ROUTE_FLUSH_PATH, strerror(errno));
aba5acdf
SH		 1560 return -1;
1561 }
1562
56f5daac 1563 len = strlen(buffer);
ae665a52 1564
56f5daac
SH		 1565 if ((write(flush_fd, (void *)buffer, len)) < len) {
1566 fprintf(stderr, "Cannot flush routing cache\n");
25352af7 1567 close(flush_fd);
aba5acdf
SH		 1568 return -1;
1569 }
1570 close(flush_fd);
1571 return 0;
1572}
1573
76c61b34
PE		 1574static __u32 route_dump_magic = 0x45311224;
1575
cd554f2c 1576static int save_route(struct nlmsghdr *n, void *arg)
f4ff11e3
DS		 1577{
1578 int ret;
1579 int len = n->nlmsg_len;
1580 struct rtmsg *r = NLMSG_DATA(n);
1581 struct rtattr *tb[RTA_MAX+1];
f3a2ddc1 1582 int host_len;
f4ff11e3 1583
f3a2ddc1 1584 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 1585 len -= NLMSG_LENGTH(sizeof(*r));
1586 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1587
1588 if (!filter_nlmsg(n, tb, host_len))
1589 return 0;
1590
1591 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
1592 if ((ret > 0) && (ret != n->nlmsg_len)) {
1593 fprintf(stderr, "Short write while saving nlmsg\n");
1594 ret = -EIO;
1595 }
1596
1597 return ret == n->nlmsg_len ? 0 : ret;
1598}
aba5acdf 1599
76c61b34
PE		 1600static int save_route_prep(void)
1601{
1602 int ret;
1603
1604 if (isatty(STDOUT_FILENO)) {
14645ec2 1605 fprintf(stderr, "Not sending a binary stream to stdout\n");
76c61b34
PE		 1606 return -1;
1607 }
1608
1609 ret = write(STDOUT_FILENO, &route_dump_magic, sizeof(route_dump_magic));
1610 if (ret != sizeof(route_dump_magic)) {
1611 fprintf(stderr, "Can't write magic to dump file\n");
1612 return -1;
1613 }
1614
1615 return 0;
1616}
1617
b5cf2636
SB		 1618static int iproute_dump_filter(struct nlmsghdr *nlh, int reqlen)
1619{
1620 struct rtmsg *rtm = NLMSG_DATA(nlh);
1621 int err;
1622
1623 rtm->rtm_protocol = filter.protocol;
1624 if (filter.cloned)
1625 rtm->rtm_flags |= RTM_F_CLONED;
1626
1627 if (filter.tb) {
1628 err = addattr32(nlh, reqlen, RTA_TABLE, filter.tb);
1629 if (err)
1630 return err;
1631 }
1632
1633 if (filter.oif) {
1634 err = addattr32(nlh, reqlen, RTA_OIF, filter.oif);
1635 if (err)
1636 return err;
1637 }
1638
1639 return 0;
1640}
1641
8d4f35de 1642static int iproute_flush(int family, rtnl_filter_t filter_fn)
432e5f97
SH		 1643{
1644 time_t start = time(0);
1645 char flushb[4096-512];
1646 int round = 0;
1647 int ret;
1648
1649 if (filter.cloned) {
8d4f35de 1650 if (family != AF_INET6) {
432e5f97
SH		 1651 iproute_flush_cache();
1652 if (show_stats)
1653 printf("*** IPv4 routing cache is flushed.\n");
1654 }
8d4f35de 1655 if (family == AF_INET)
432e5f97
SH		 1656 return 0;
1657 }
1658
1659 filter.flushb = flushb;
1660 filter.flushp = 0;
1661 filter.flushe = sizeof(flushb);
1662
1663 for (;;) {
b5cf2636 1664 if (rtnl_routedump_req(&rth, family, iproute_dump_filter) < 0) {
432e5f97
SH		 1665 perror("Cannot send dump request");
1666 return -2;
1667 }
1668 filter.flushed = 0;
1669 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
1670 fprintf(stderr, "Flush terminated\n");
1671 return -2;
1672 }
1673 if (filter.flushed == 0) {
1674 if (show_stats) {
1675 if (round == 0 &&
8d4f35de 1676 (!filter.cloned || family == AF_INET6))
432e5f97
SH		 1677 printf("Nothing to flush.\n");
1678 else
1679 printf("*** Flush is complete after %d round%s ***\n",
1680 round, round > 1 ? "s" : "");
1681 }
1682 fflush(stdout);
1683 return 0;
1684 }
1685 round++;
1686 ret = flush_update();
1687 if (ret < 0)
1688 return ret;
1689
1690 if (time(0) - start > 30) {
1691 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1692 (long)(time(0) - start), filter.flushed);
1693 return -1;
1694 }
1695
1696 if (show_stats) {
1697 printf("\n*** Round %d, deleting %d entries ***\n",
1698 round, filter.flushed);
1699 fflush(stdout);
1700 }
1701 }
1702}
1703
f4ff11e3 1704static int iproute_list_flush_or_save(int argc, char **argv, int action)
aba5acdf 1705{
8d4f35de 1706 int dump_family = preferred_family;
aba5acdf
SH		 1707 char *id = NULL;
1708 char *od = NULL;
b0373bfb 1709 unsigned int mark = 0;
f4ff11e3
DS		 1710 rtnl_filter_t filter_fn;
1711
76c61b34
PE		 1712 if (action == IPROUTE_SAVE) {
1713 if (save_route_prep())
1714 return -1;
1715
f4ff11e3 1716 filter_fn = save_route;
76c61b34 1717 } else
f4ff11e3 1718 filter_fn = print_route;
aba5acdf 1719
093b7646 1720 iproute_reset_filter(0);
aba5acdf
SH		 1721 filter.tb = RT_TABLE_MAIN;
1722
f4ff11e3 1723 if ((action == IPROUTE_FLUSH) && argc <= 0) {
aba5acdf
SH		 1724 fprintf(stderr, "\"ip route flush\" requires arguments.\n");
1725 return -1;
1726 }
1727
1728 while (argc > 0) {
1729 if (matches(*argv, "table") == 0) {
f332d169 1730 __u32 tid;
56f5daac 1731
aba5acdf
SH		 1732 NEXT_ARG();
1733 if (rtnl_rttable_a2n(&tid, *argv)) {
1734 if (strcmp(*argv, "all") == 0) {
bd4bcdad 1735 filter.tb = 0;
aba5acdf 1736 } else if (strcmp(*argv, "cache") == 0) {
bd4bcdad 1737 filter.cloned = 1;
aba5acdf
SH		 1738 } else if (strcmp(*argv, "help") == 0) {
1739 usage();
1740 } else {
1741 invarg("table id value is invalid\n", *argv);
1742 }
bd4bcdad
PM		 1743 } else
1744 filter.tb = tid;
0130f012
DA		 1745 } else if (matches(*argv, "vrf") == 0) {
1746 __u32 tid;
1747
1748 NEXT_ARG();
1749 tid = ipvrf_get_table(*argv);
1750 if (tid == 0)
1751 invarg("Invalid VRF\n", *argv);
1752 filter.tb = tid;
1753 filter.typemask = ~(1 << RTN_LOCAL | 1<<RTN_BROADCAST);
aba5acdf
SH		 1754 } else if (matches(*argv, "cached") == 0 ||
1755 matches(*argv, "cloned") == 0) {
bd4bcdad 1756 filter.cloned = 1;
aba5acdf
SH		 1757 } else if (strcmp(*argv, "tos") == 0 ||
1758 matches(*argv, "dsfield") == 0) {
1759 __u32 tos;
56f5daac 1760
aba5acdf
SH		 1761 NEXT_ARG();
1762 if (rtnl_dsfield_a2n(&tos, *argv))
1763 invarg("TOS value is invalid\n", *argv);
1764 filter.tos = tos;
1765 filter.tosmask = -1;
1766 } else if (matches(*argv, "protocol") == 0) {
f332d169 1767 __u32 prot = 0;
56f5daac 1768
aba5acdf
SH		 1769 NEXT_ARG();
1770 filter.protocolmask = -1;
1771 if (rtnl_rtprot_a2n(&prot, *argv)) {
1772 if (strcmp(*argv, "all") != 0)
1773 invarg("invalid \"protocol\"\n", *argv);
1774 prot = 0;
1775 filter.protocolmask = 0;
1776 }
1777 filter.protocol = prot;
1778 } else if (matches(*argv, "scope") == 0) {
f332d169 1779 __u32 scope = 0;
56f5daac 1780
aba5acdf
SH		 1781 NEXT_ARG();
1782 filter.scopemask = -1;
1783 if (rtnl_rtscope_a2n(&scope, *argv)) {
1784 if (strcmp(*argv, "all") != 0)
1785 invarg("invalid \"scope\"\n", *argv);
1786 scope = RT_SCOPE_NOWHERE;
1787 filter.scopemask = 0;
1788 }
1789 filter.scope = scope;
1790 } else if (matches(*argv, "type") == 0) {
1791 int type;
56f5daac 1792
aba5acdf 1793 NEXT_ARG();
aba5acdf
SH		 1794 if (rtnl_rtntype_a2n(&type, *argv))
1795 invarg("node type value is invalid\n", *argv);
d84b1878 1796 filter.typemask = (1<<type);
aba5acdf
SH		 1797 } else if (strcmp(*argv, "dev") == 0 ||
1798 strcmp(*argv, "oif") == 0) {
1799 NEXT_ARG();
1800 od = *argv;
1801 } else if (strcmp(*argv, "iif") == 0) {
1802 NEXT_ARG();
1803 id = *argv;
b0373bfb
ED		 1804 } else if (strcmp(*argv, "mark") == 0) {
1805 NEXT_ARG();
7c66d898
PS		 1806 if (get_unsigned(&mark, *argv, 0))
1807 invarg("invalid mark value", *argv);
b0373bfb 1808 filter.markmask = -1;
ed7fdc95 1809 } else if (matches(*argv, "metric") == 0 ||
80d1c528
SH		 1810 matches(*argv, "priority") == 0 ||
1811 strcmp(*argv, "preference") == 0) {
ed7fdc95
AZ		 1812 __u32 metric;
1813
1814 NEXT_ARG();
1815 if (get_u32(&metric, *argv, 0))
1816 invarg("\"metric\" value is invalid\n", *argv);
1817 filter.metric = metric;
1818 filter.metricmask = -1;
aba5acdf 1819 } else if (strcmp(*argv, "via") == 0) {
93ae2835 1820 int family;
56f5daac 1821
aba5acdf 1822 NEXT_ARG();
93ae2835
EB		 1823 family = read_family(*argv);
1824 if (family == AF_UNSPEC)
8d4f35de 1825 family = dump_family;
93ae2835
EB		 1826 else
1827 NEXT_ARG();
1828 get_prefix(&filter.rvia, *argv, family);
aba5acdf
SH		 1829 } else if (strcmp(*argv, "src") == 0) {
1830 NEXT_ARG();
8d4f35de 1831 get_prefix(&filter.rprefsrc, *argv, dump_family);
aba5acdf
SH		 1832 } else if (matches(*argv, "realms") == 0) {
1833 __u32 realm;
56f5daac 1834
aba5acdf 1835 NEXT_ARG();
d583e88e 1836 if (get_rt_realms_or_raw(&realm, *argv))
aba5acdf
SH		 1837 invarg("invalid realms\n", *argv);
1838 filter.realm = realm;
1839 filter.realmmask = ~0U;
1840 if ((filter.realm&0xFFFF) == 0 &&
1841 (*argv)[strlen(*argv) - 1] == '/')
1842 filter.realmmask &= ~0xFFFF;
1843 if ((filter.realm&0xFFFF0000U) == 0 &&
1844 (strchr(*argv, '/') == NULL ||
1845 (*argv)[0] == '/'))
1846 filter.realmmask &= ~0xFFFF0000U;
1847 } else if (matches(*argv, "from") == 0) {
1848 NEXT_ARG();
1849 if (matches(*argv, "root") == 0) {
1850 NEXT_ARG();
8d4f35de 1851 get_prefix(&filter.rsrc, *argv, dump_family);
aba5acdf
SH		 1852 } else if (matches(*argv, "match") == 0) {
1853 NEXT_ARG();
8d4f35de 1854 get_prefix(&filter.msrc, *argv, dump_family);
aba5acdf
SH		 1855 } else {
1856 if (matches(*argv, "exact") == 0) {
1857 NEXT_ARG();
1858 }
8d4f35de 1859 get_prefix(&filter.msrc, *argv, dump_family);
aba5acdf
SH		 1860 filter.rsrc = filter.msrc;
1861 }
1862 } else {
1863 if (matches(*argv, "to") == 0) {
1864 NEXT_ARG();
1865 }
1866 if (matches(*argv, "root") == 0) {
1867 NEXT_ARG();
8d4f35de 1868 get_prefix(&filter.rdst, *argv, dump_family);
aba5acdf
SH		 1869 } else if (matches(*argv, "match") == 0) {
1870 NEXT_ARG();
8d4f35de 1871 get_prefix(&filter.mdst, *argv, dump_family);
aba5acdf
SH		 1872 } else {
1873 if (matches(*argv, "exact") == 0) {
1874 NEXT_ARG();
1875 }
8d4f35de 1876 get_prefix(&filter.mdst, *argv, dump_family);
aba5acdf
SH		 1877 filter.rdst = filter.mdst;
1878 }
1879 }
1880 argc--; argv++;
1881 }
1882
8d4f35de
DA		 1883 if (dump_family == AF_UNSPEC && filter.tb)
1884 dump_family = AF_INET;
aba5acdf 1885
aba5acdf
SH		 1886 if (id || od) {
1887 int idx;
1888
1889 if (id) {
cc560825 1890 idx = ll_name_to_index(id);
fe99adbc
SP		 1891 if (!idx)
1892 return nodev(id);
aba5acdf
SH		 1893 filter.iif = idx;
1894 filter.iifmask = -1;
1895 }
1896 if (od) {
cc560825 1897 idx = ll_name_to_index(od);
fe99adbc
SP		 1898 if (!idx)
1899 return nodev(od);
aba5acdf
SH		 1900 filter.oif = idx;
1901 filter.oifmask = -1;
1902 }
1903 }
b0373bfb 1904 filter.mark = mark;
aba5acdf 1905
432e5f97 1906 if (action == IPROUTE_FLUSH)
8d4f35de 1907 return iproute_flush(dump_family, filter_fn);
aba5acdf 1908
8d4f35de 1909 if (rtnl_routedump_req(&rth, dump_family, iproute_dump_filter) < 0) {
43fd93ae
DA		 1910 perror("Cannot send dump request");
1911 return -2;
aba5acdf
SH		 1912 }
1913
663c3cb2
SH		 1914 new_json_obj(json);
1915
cd70f3f5 1916 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
aba5acdf 1917 fprintf(stderr, "Dump terminated\n");
2f406f2d 1918 return -2;
aba5acdf
SH		 1919 }
1920
663c3cb2
SH		 1921 delete_json_obj();
1922 fflush(stdout);
2f406f2d 1923 return 0;
aba5acdf
SH		 1924}
1925
1926
d1f28cf1 1927static int iproute_get(int argc, char **argv)
aba5acdf 1928{
aba5acdf 1929 struct {
4806867a
SH		 1930 struct nlmsghdr n;
1931 struct rtmsg r;
56f5daac 1932 char buf[1024];
d17b136f
PS		 1933 } req = {
1934 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)),
1935 .n.nlmsg_flags = NLM_F_REQUEST,
1936 .n.nlmsg_type = RTM_GETROUTE,
1937 .r.rtm_family = preferred_family,
1938 };
aba5acdf
SH		 1939 char *idev = NULL;
1940 char *odev = NULL;
86bf43c7 1941 struct nlmsghdr *answer;
aba5acdf 1942 int connected = 0;
aa883d86 1943 int fib_match = 0;
aba5acdf 1944 int from_ok = 0;
b0373bfb 1945 unsigned int mark = 0;
c2f9dc14 1946 bool address_found = false;
aba5acdf 1947
093b7646 1948 iproute_reset_filter(0);
c73f3e02 1949 filter.cloned = 2;
aba5acdf 1950
aba5acdf
SH		 1951 while (argc > 0) {
1952 if (strcmp(*argv, "tos") == 0 ||
1953 matches(*argv, "dsfield") == 0) {
1954 __u32 tos;
56f5daac 1955
aba5acdf
SH		 1956 NEXT_ARG();
1957 if (rtnl_dsfield_a2n(&tos, *argv))
1958 invarg("TOS value is invalid\n", *argv);
1959 req.r.rtm_tos = tos;
1960 } else if (matches(*argv, "from") == 0) {
1961 inet_prefix addr;
56f5daac 1962
aba5acdf
SH		 1963 NEXT_ARG();
1964 if (matches(*argv, "help") == 0)
1965 usage();
1966 from_ok = 1;
1967 get_prefix(&addr, *argv, req.r.rtm_family);
1968 if (req.r.rtm_family == AF_UNSPEC)
1969 req.r.rtm_family = addr.family;
1970 if (addr.bytelen)
21fef525
SH		 1971 addattr_l(&req.n, sizeof(req), RTA_SRC,
1972 &addr.data, addr.bytelen);
aba5acdf
SH		 1973 req.r.rtm_src_len = addr.bitlen;
1974 } else if (matches(*argv, "iif") == 0) {
1975 NEXT_ARG();
1976 idev = *argv;
b0373bfb
ED		 1977 } else if (matches(*argv, "mark") == 0) {
1978 NEXT_ARG();
7c66d898
PS		 1979 if (get_unsigned(&mark, *argv, 0))
1980 invarg("invalid mark value", *argv);
aba5acdf
SH		 1981 } else if (matches(*argv, "oif") == 0 ||
1982 strcmp(*argv, "dev") == 0) {
1983 NEXT_ARG();
1984 odev = *argv;
1985 } else if (matches(*argv, "notify") == 0) {
1986 req.r.rtm_flags |= RTM_F_NOTIFY;
1987 } else if (matches(*argv, "connected") == 0) {
1988 connected = 1;
0130f012
DA		 1989 } else if (matches(*argv, "vrf") == 0) {
1990 NEXT_ARG();
1991 if (!name_is_vrf(*argv))
1992 invarg("Invalid VRF\n", *argv);
1993 odev = *argv;
82252cdc
LC		 1994 } else if (matches(*argv, "uid") == 0) {
1995 uid_t uid;
1996
1997 NEXT_ARG();
1998 if (get_unsigned(&uid, *argv, 0))
1999 invarg("invalid UID\n", *argv);
2000 addattr32(&req.n, sizeof(req), RTA_UID, uid);
aa883d86
RP		 2001 } else if (matches(*argv, "fibmatch") == 0) {
2002 fib_match = 1;
2e86ed54
RP		 2003 } else if (strcmp(*argv, "as") == 0) {
2004 inet_prefix addr;
2005
2006 NEXT_ARG();
2007 if (strcmp(*argv, "to") == 0)
2008 NEXT_ARG();
2009 get_addr(&addr, *argv, req.r.rtm_family);
2010 if (req.r.rtm_family == AF_UNSPEC)
2011 req.r.rtm_family = addr.family;
21fef525
SH		 2012 addattr_l(&req.n, sizeof(req), RTA_NEWDST,
2013 &addr.data, addr.bytelen);
804c7fff
RP		 2014 } else if (matches(*argv, "sport") == 0) {
2015 __be16 sport;
2016
2017 NEXT_ARG();
2018 if (get_be16(&sport, *argv, 0))
2019 invarg("invalid sport\n", *argv);
2020 addattr16(&req.n, sizeof(req), RTA_SPORT, sport);
2021 } else if (matches(*argv, "dport") == 0) {
2022 __be16 dport;
2023
2024 NEXT_ARG();
2025 if (get_be16(&dport, *argv, 0))
2026 invarg("invalid dport\n", *argv);
2027 addattr16(&req.n, sizeof(req), RTA_DPORT, dport);
2028 } else if (matches(*argv, "ipproto") == 0) {
2029 int ipproto;
2030
2031 NEXT_ARG();
2032 ipproto = inet_proto_a2n(*argv);
2033 if (ipproto < 0)
2034 invarg("Invalid \"ipproto\" value\n",
2035 *argv);
2036 addattr8(&req.n, sizeof(req), RTA_IP_PROTO, ipproto);
aba5acdf
SH		 2037 } else {
2038 inet_prefix addr;
56f5daac 2039
aba5acdf
SH		 2040 if (strcmp(*argv, "to") == 0) {
2041 NEXT_ARG();
2042 }
2043 if (matches(*argv, "help") == 0)
2044 usage();
2045 get_prefix(&addr, *argv, req.r.rtm_family);
2046 if (req.r.rtm_family == AF_UNSPEC)
2047 req.r.rtm_family = addr.family;
2048 if (addr.bytelen)
21fef525
SH		 2049 addattr_l(&req.n, sizeof(req),
2050 RTA_DST, &addr.data, addr.bytelen);
aba5acdf 2051 req.r.rtm_dst_len = addr.bitlen;
c2f9dc14 2052 address_found = true;
aba5acdf
SH		 2053 }
2054 argc--; argv++;
2055 }
2056
c2f9dc14 2057 if (!address_found) {
14645ec2 2058 fprintf(stderr, "need at least a destination address\n");
2f406f2d 2059 return -1;
aba5acdf
SH		 2060 }
2061
aba5acdf
SH		 2062 if (idev || odev) {
2063 int idx;
2064
2065 if (idev) {
cc560825 2066 idx = ll_name_to_index(idev);
fe99adbc
SP		 2067 if (!idx)
2068 return nodev(idev);
aba5acdf
SH		 2069 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
2070 }
2071 if (odev) {
cc560825 2072 idx = ll_name_to_index(odev);
fe99adbc
SP		 2073 if (!idx)
2074 return nodev(odev);
aba5acdf
SH		 2075 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
2076 }
2077 }
b0373bfb
ED		 2078 if (mark)
2079 addattr32(&req.n, sizeof(req), RTA_MARK, mark);
aba5acdf
SH		 2080
2081 if (req.r.rtm_family == AF_UNSPEC)
2082 req.r.rtm_family = AF_INET;
2083
8513f4a9
JK		 2084 /* Only IPv4 supports the RTM_F_LOOKUP_TABLE flag */
2085 if (req.r.rtm_family == AF_INET)
2086 req.r.rtm_flags |= RTM_F_LOOKUP_TABLE;
aa883d86
RP		 2087 if (fib_match)
2088 req.r.rtm_flags |= RTM_F_FIB_MATCH;
bc234301 2089
86bf43c7 2090 if (rtnl_talk(&rth, &req.n, &answer) < 0)
8b21cef1 2091 return -2;
aba5acdf 2092
a0a639d9
MC		 2093 new_json_obj(json);
2094
aba5acdf 2095 if (connected && !from_ok) {
86bf43c7
HL		 2096 struct rtmsg *r = NLMSG_DATA(answer);
2097 int len = answer->nlmsg_len;
56f5daac 2098 struct rtattr *tb[RTA_MAX+1];
aba5acdf 2099
cd554f2c 2100 if (print_route(answer, (void *)stdout) < 0) {
aba5acdf 2101 fprintf(stderr, "An error :-)\n");
86bf43c7 2102 free(answer);
8be29558 2103 return -1;
aba5acdf
SH		 2104 }
2105
86bf43c7 2106 if (answer->nlmsg_type != RTM_NEWROUTE) {
aba5acdf 2107 fprintf(stderr, "Not a route?\n");
86bf43c7 2108 free(answer);
aba5acdf
SH		 2109 return -1;
2110 }
2111 len -= NLMSG_LENGTH(sizeof(*r));
2112 if (len < 0) {
2113 fprintf(stderr, "Wrong len %d\n", len);
86bf43c7 2114 free(answer);
aba5acdf
SH		 2115 return -1;
2116 }
2117
aba5acdf
SH		 2118 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
2119
2120 if (tb[RTA_PREFSRC]) {
2121 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
2122 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
2123 } else if (!tb[RTA_SRC]) {
2124 fprintf(stderr, "Failed to connect the route\n");
86bf43c7 2125 free(answer);
aba5acdf
SH		 2126 return -1;
2127 }
2128 if (!odev && tb[RTA_OIF])
2129 tb[RTA_OIF]->rta_type = 0;
2130 if (tb[RTA_GATEWAY])
2131 tb[RTA_GATEWAY]->rta_type = 0;
93ae2835
EB		 2132 if (tb[RTA_VIA])
2133 tb[RTA_VIA]->rta_type = 0;
aba5acdf
SH		 2134 if (!idev && tb[RTA_IIF])
2135 tb[RTA_IIF]->rta_type = 0;
2136 req.n.nlmsg_flags = NLM_F_REQUEST;
2137 req.n.nlmsg_type = RTM_GETROUTE;
2138
a0a639d9 2139 delete_json_obj();
86bf43c7
HL		 2140 free(answer);
2141 if (rtnl_talk(&rth, &req.n, &answer) < 0)
56d8ff0a 2142 return -2;
aba5acdf
SH		 2143 }
2144
cd554f2c 2145 if (print_route(answer, (void *)stdout) < 0) {
aba5acdf 2146 fprintf(stderr, "An error :-)\n");
86bf43c7 2147 free(answer);
56d8ff0a 2148 return -1;
aba5acdf
SH		 2149 }
2150
a0a639d9 2151 delete_json_obj();
86bf43c7 2152 free(answer);
56d8ff0a 2153 return 0;
aba5acdf
SH		 2154}
2155
79f4a393 2156static int rtattr_cmp(const struct rtattr *rta1, const struct rtattr *rta2)
74af8dd9
XL		 2157{
2158 if (!rta1 || !rta2 || rta1->rta_len != rta2->rta_len)
2159 return 1;
2160
2161 return memcmp(RTA_DATA(rta1), RTA_DATA(rta2), RTA_PAYLOAD(rta1));
2162}
2163
cd554f2c 2164static int restore_handler(struct rtnl_ctrl_data *ctrl,
0628cddd 2165 struct nlmsghdr *n, void *arg)
f4ff11e3 2166{
74af8dd9
XL		 2167 struct rtmsg *r = NLMSG_DATA(n);
2168 struct rtattr *tb[RTA_MAX+1];
2169 int len = n->nlmsg_len - NLMSG_LENGTH(sizeof(*r));
2170 int ret, prio = *(int *)arg;
2171
2172 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
f4ff11e3 2173
74af8dd9
XL		 2174 /* Restore routes in correct order:
2175 * 0. ones for local addresses,
2176 * 1. ones for local networks,
2177 * 2. others (remote networks/hosts).
2178 */
2179 if (!prio && !tb[RTA_GATEWAY] && (!tb[RTA_PREFSRC] ||
2180 !rtattr_cmp(tb[RTA_PREFSRC], tb[RTA_DST])))
2181 goto restore;
c85703bb 2182 else if (prio == 1 && !tb[RTA_GATEWAY] && tb[RTA_PREFSRC] &&
74af8dd9
XL		 2183 rtattr_cmp(tb[RTA_PREFSRC], tb[RTA_DST]))
2184 goto restore;
2185 else if (prio == 2 && tb[RTA_GATEWAY])
2186 goto restore;
2187
2188 return 0;
2189
2190restore:
f4ff11e3
DS		 2191 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
2192
2193 ll_init_map(&rth);
2194
86bf43c7 2195 ret = rtnl_talk(&rth, n, NULL);
f4ff11e3
DS		 2196 if ((ret < 0) && (errno == EEXIST))
2197 ret = 0;
2198
2199 return ret;
2200}
2201
76c61b34
PE		 2202static int route_dump_check_magic(void)
2203{
2204 int ret;
2205 __u32 magic = 0;
2206
2207 if (isatty(STDIN_FILENO)) {
2208 fprintf(stderr, "Can't restore route dump from a terminal\n");
2209 return -1;
2210 }
2211
2212 ret = fread(&magic, sizeof(magic), 1, stdin);
2213 if (magic != route_dump_magic) {
2214 fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic);
2215 return -1;
2216 }
2217
2218 return 0;
2219}
2220
d1f28cf1 2221static int iproute_restore(void)
f4ff11e3 2222{
74af8dd9
XL		 2223 int pos, prio;
2224
76c61b34 2225 if (route_dump_check_magic())
2f406f2d 2226 return -1;
76c61b34 2227
74af8dd9 2228 pos = ftell(stdin);
bffb68b6
HL		 2229 if (pos == -1) {
2230 perror("Failed to restore: ftell");
2f406f2d 2231 return -1;
bffb68b6
HL		 2232 }
2233
74af8dd9
XL		 2234 for (prio = 0; prio < 3; prio++) {
2235 int err;
2236
2237 err = rtnl_from_file(stdin, &restore_handler, &prio);
2238 if (err)
2f406f2d 2239 return -2;
74af8dd9 2240
bffb68b6
HL		 2241 if (fseek(stdin, pos, SEEK_SET) == -1) {
2242 perror("Failed to restore: fseek");
2f406f2d 2243 return -1;
bffb68b6 2244 }
74af8dd9
XL		 2245 }
2246
2f406f2d 2247 return 0;
f4ff11e3
DS		 2248}
2249
cd554f2c 2250static int show_handler(struct rtnl_ctrl_data *ctrl,
0628cddd 2251 struct nlmsghdr *n, void *arg)
93b79863 2252{
cd554f2c 2253 print_route(n, stdout);
93b79863
PE		 2254 return 0;
2255}
2256
2257static int iproute_showdump(void)
2258{
2259 if (route_dump_check_magic())
2f406f2d 2260 return -1;
93b79863 2261
2f406f2d
ÉB		 2262 if (rtnl_from_file(stdin, &show_handler, NULL))
2263 return -2;
2264
2265 return 0;
93b79863
PE		 2266}
2267
093b7646 2268void iproute_reset_filter(int ifindex)
aba5acdf
SH		 2269{
2270 memset(&filter, 0, sizeof(filter));
2271 filter.mdst.bitlen = -1;
2272 filter.msrc.bitlen = -1;
093b7646 2273 filter.oif = ifindex;
2274 if (filter.oif > 0)
2275 filter.oifmask = -1;
aba5acdf
SH		 2276}
2277
2278int do_iproute(int argc, char **argv)
2279{
2280 if (argc < 1)
f4ff11e3 2281 return iproute_list_flush_or_save(0, NULL, IPROUTE_LIST);
ae665a52 2282
aba5acdf
SH		 2283 if (matches(*argv, "add") == 0)
2284 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
2285 argc-1, argv+1);
2286 if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
2287 return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
2288 argc-1, argv+1);
2289 if (matches(*argv, "replace") == 0)
2290 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
2291 argc-1, argv+1);
2292 if (matches(*argv, "prepend") == 0)
2293 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
2294 argc-1, argv+1);
2295 if (matches(*argv, "append") == 0)
2296 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
2297 argc-1, argv+1);
2298 if (matches(*argv, "test") == 0)
2299 return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
2300 argc-1, argv+1);
2301 if (matches(*argv, "delete") == 0)
2302 return iproute_modify(RTM_DELROUTE, 0,
2303 argc-1, argv+1);
2304 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
2305 || matches(*argv, "lst") == 0)
f4ff11e3 2306 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_LIST);
aba5acdf
SH		 2307 if (matches(*argv, "get") == 0)
2308 return iproute_get(argc-1, argv+1);
2309 if (matches(*argv, "flush") == 0)
f4ff11e3
DS		 2310 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_FLUSH);
2311 if (matches(*argv, "save") == 0)
2312 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_SAVE);
2313 if (matches(*argv, "restore") == 0)
2314 return iproute_restore();
93b79863
PE		 2315 if (matches(*argv, "showdump") == 0)
2316 return iproute_showdump();
aba5acdf
SH		 2317 if (matches(*argv, "help") == 0)
2318 usage();
80d1c528
SH		 2319
2320 fprintf(stderr,
2321 "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
aba5acdf
SH		 2322 exit(-1);
2323}
Upstream mirror of iproute2