]> git.proxmox.com Git - mirror_iproute2.git/blame - ip/iproute.c
projects / mirror_iproute2.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'main' into next
[mirror_iproute2.git] / ip / iproute.c
CommitLineData
aba5acdf
SH		 1/*
2 * iproute.c "ip route".
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 *
aba5acdf
SH		 11 */
12
13#include <stdio.h>
14#include <stdlib.h>
15#include <unistd.h>
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"
9f91f1b7 104 "ENCAPTYPE := [ mpls | ip | ip6 | seg6 | seg6local | rpl ]\n"
21fef525
SH		 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 370 print_string(PRINT_ANY, NULL, "%s ", "unresolved");
ed81a2a0
IS		 371 if (flags & RTM_F_OFFLOAD)
372 print_string(PRINT_ANY, NULL, "%s ", "rt_offload");
373 if (flags & RTM_F_TRAP)
374 print_string(PRINT_ANY, NULL, "%s ", "rt_trap");
663c3cb2
SH		 375
376 close_json_array(PRINT_JSON, NULL);
b3ab1e68
SH		 377}
378
8cfc2d47
SH		 379static void print_rt_pref(FILE *fp, unsigned int pref)
380{
8cfc2d47
SH		 381
382 switch (pref) {
383 case ICMPV6_ROUTER_PREF_LOW:
663c3cb2
SH		 384 print_string(PRINT_ANY,
385 "pref", "pref %s", "low");
8cfc2d47
SH		 386 break;
387 case ICMPV6_ROUTER_PREF_MEDIUM:
663c3cb2
SH		 388 print_string(PRINT_ANY,
389 "pref", "pref %s", "medium");
8cfc2d47
SH		 390 break;
391 case ICMPV6_ROUTER_PREF_HIGH:
663c3cb2
SH		 392 print_string(PRINT_ANY,
393 "pref", "pref %s", "high");
8cfc2d47
SH		 394 break;
395 default:
663c3cb2
SH		 396 print_uint(PRINT_ANY,
397 "pref", "%u", pref);
8cfc2d47
SH		 398 }
399}
400
48a1e96d 401void print_rta_if(FILE *fp, const struct rtattr *rta, const char *prefix)
1506d8d3
SH		 402{
403 const char *ifname = ll_index_to_name(rta_getattr_u32(rta));
404
663c3cb2
SH		 405 if (is_json_context())
406 print_string(PRINT_JSON, prefix, NULL, ifname);
407 else {
408 fprintf(fp, "%s ", prefix);
409 color_fprintf(fp, COLOR_IFNAME, "%s ", ifname);
410 }
1506d8d3
SH		 411}
412
daf30f6f
SH		 413static void print_cache_flags(FILE *fp, __u32 flags)
414{
663c3cb2 415 json_writer_t *jw = get_json_writer();
daf30f6f
SH		 416 flags &= ~0xFFFF;
417
663c3cb2
SH		 418 if (jw) {
419 jsonw_name(jw, "cache");
420 jsonw_start_array(jw);
421 } else {
422 fprintf(fp, "%s cache ", _SL_);
423 if (flags == 0)
424 return;
425 putc('<', fp);
426 }
daf30f6f
SH		 427
428#define PRTFL(fl, flname) \
429 if (flags & RTCF_##fl) { \
430 flags &= ~RTCF_##fl; \
663c3cb2
SH		 431 if (jw) \
432 jsonw_string(jw, flname); \
433 else \
434 fprintf(fp, "%s%s", flname, flags ? "," : "> "); \
daf30f6f
SH		 435 }
436
437 PRTFL(LOCAL, "local");
438 PRTFL(REJECT, "reject");
439 PRTFL(MULTICAST, "mc");
440 PRTFL(BROADCAST, "brd");
441 PRTFL(DNAT, "dst-nat");
442 PRTFL(SNAT, "src-nat");
443 PRTFL(MASQ, "masq");
444 PRTFL(DIRECTDST, "dst-direct");
445 PRTFL(DIRECTSRC, "src-direct");
446 PRTFL(REDIRECTED, "redirected");
447 PRTFL(DOREDIRECT, "redirect");
448 PRTFL(FAST, "fastroute");
449 PRTFL(NOTIFY, "notify");
450 PRTFL(TPROXY, "proxy");
451#undef PRTFL
452
453 if (flags)
663c3cb2
SH		 454 print_hex(PRINT_ANY, "flags", "%x>", flags);
455
a0a639d9 456 if (jw)
663c3cb2 457 jsonw_end_array(jw);
daf30f6f
SH		 458}
459
6e41810e
SH		 460static void print_rta_cacheinfo(FILE *fp, const struct rta_cacheinfo *ci)
461{
462 static int hz;
463
464 if (!hz)
465 hz = get_user_hz();
663c3cb2 466
6e41810e 467 if (ci->rta_expires != 0)
39d16a02
DA		 468 print_int(PRINT_ANY, "expires",
469 "expires %dsec ", ci->rta_expires/hz);
6e41810e 470 if (ci->rta_error != 0)
663c3cb2
SH		 471 print_uint(PRINT_ANY, "error",
472 "error %u ", ci->rta_error);
473
6e41810e
SH		 474 if (show_stats) {
475 if (ci->rta_clntref)
663c3cb2
SH		 476 print_uint(PRINT_ANY, "users",
477 "users %u ", ci->rta_clntref);
6e41810e 478 if (ci->rta_used != 0)
663c3cb2
SH		 479 print_uint(PRINT_ANY, "used",
480 "used %u ", ci->rta_used);
6e41810e 481 if (ci->rta_lastuse != 0)
663c3cb2
SH		 482 print_uint(PRINT_ANY, "age",
483 "age %usec ", ci->rta_lastuse/hz);
6e41810e
SH		 484 }
485 if (ci->rta_id)
663c3cb2 486 print_0xhex(PRINT_ANY, "ipid",
90c5c969 487 "ipid 0x%04llx ", ci->rta_id);
663c3cb2
SH		 488 if (ci->rta_ts || ci->rta_tsage) {
489 print_0xhex(PRINT_ANY, "ts",
90c5c969 490 "ts 0x%llx", ci->rta_ts);
663c3cb2
SH		 491 print_uint(PRINT_ANY, "tsage",
492 "tsage %usec ", ci->rta_tsage);
493 }
6e41810e
SH		 494}
495
5782965a
SH		 496static void print_rta_flow(FILE *fp, const struct rtattr *rta)
497{
498 __u32 to = rta_getattr_u32(rta);
499 __u32 from = to >> 16;
500 SPRINT_BUF(b1);
501
502 to &= 0xFFFF;
663c3cb2
SH		 503 if (is_json_context()) {
504 open_json_object("flow");
505
506 if (from)
507 print_string(PRINT_JSON, "from", NULL,
508 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
509 print_string(PRINT_JSON, "to", NULL,
510 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
511 close_json_object();
512 } else {
513 fprintf(fp, "realm%s ", from ? "s" : "");
514
515 if (from)
516 print_string(PRINT_FP, NULL, "%s/",
517 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
518 print_string(PRINT_FP, NULL, "%s ",
519 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
5782965a 520 }
5782965a
SH		 521}
522
a3484a9f
SH		 523static void print_rta_newdst(FILE *fp, const struct rtmsg *r,
524 const struct rtattr *rta)
525{
526 const char *newdst = format_host_rta(r->rtm_family, rta);
527
663c3cb2
SH		 528 if (is_json_context())
529 print_string(PRINT_JSON, "to", NULL, newdst);
530 else {
531 fprintf(fp, "as to ");
532 print_color_string(PRINT_FP,
533 ifa_family_color(r->rtm_family),
534 NULL, "%s ", newdst);
535 }
a3484a9f
SH		 536}
537
48a1e96d 538void print_rta_gateway(FILE *fp, unsigned char family, const struct rtattr *rta)
a3484a9f 539{
48a1e96d 540 const char *gateway = format_host_rta(family, rta);
a3484a9f 541
663c3cb2
SH		 542 if (is_json_context())
543 print_string(PRINT_JSON, "gateway", NULL, gateway);
544 else {
545 fprintf(fp, "via ");
546 print_color_string(PRINT_FP,
48a1e96d 547 ifa_family_color(family),
663c3cb2
SH		 548 NULL, "%s ", gateway);
549 }
a3484a9f
SH		 550}
551
552static void print_rta_via(FILE *fp, const struct rtattr *rta)
553{
663c3cb2 554 size_t len = RTA_PAYLOAD(rta) - 2;
a3484a9f 555 const struct rtvia *via = RTA_DATA(rta);
a3484a9f 556
663c3cb2
SH		 557 if (is_json_context()) {
558 open_json_object("via");
559 print_string(PRINT_JSON, "family", NULL,
560 family_name(via->rtvia_family));
561 print_string(PRINT_JSON, "host", NULL,
562 format_host(via->rtvia_family, len,
563 via->rtvia_addr));
564 close_json_object();
565 } else {
566 print_string(PRINT_FP, NULL, "via %s ",
567 family_name(via->rtvia_family));
568 print_color_string(PRINT_FP,
569 ifa_family_color(via->rtvia_family),
570 NULL, "%s ",
571 format_host(via->rtvia_family,
572 len, via->rtvia_addr));
573 }
a3484a9f
SH		 574}
575
968272e7
SH		 576static void print_rta_metrics(FILE *fp, const struct rtattr *rta)
577{
578 struct rtattr *mxrta[RTAX_MAX+1];
579 unsigned int mxlock = 0;
580 int i;
581
663c3cb2 582 open_json_array(PRINT_JSON, "metrics");
89ce8012 583 open_json_object(NULL);
663c3cb2 584
968272e7
SH		 585 parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta));
586
587 if (mxrta[RTAX_LOCK])
588 mxlock = rta_getattr_u32(mxrta[RTAX_LOCK]);
589
590 for (i = 2; i <= RTAX_MAX; i++) {
591 __u32 val = 0U;
592
593 if (mxrta[i] == NULL && !(mxlock & (1 << i)))
594 continue;
595
596 if (mxrta[i] != NULL && i != RTAX_CC_ALGO)
597 val = rta_getattr_u32(mxrta[i]);
598
599 if (i == RTAX_HOPLIMIT && (int)val == -1)
600 continue;
601
663c3cb2
SH		 602 if (!is_json_context()) {
603 if (i < sizeof(mx_names)/sizeof(char *) && mx_names[i])
604 fprintf(fp, "%s ", mx_names[i]);
605 else
606 fprintf(fp, "metric %d ", i);
968272e7 607
663c3cb2
SH		 608 if (mxlock & (1<<i))
609 fprintf(fp, "lock ");
610 }
968272e7
SH		 611
612 switch (i) {
613 case RTAX_FEATURES:
614 print_rtax_features(fp, val);
615 break;
616 default:
89ce8012 617 print_uint(PRINT_ANY, mx_names[i], "%u ", val);
968272e7
SH		 618 break;
619
620 case RTAX_RTT:
621 case RTAX_RTTVAR:
622 case RTAX_RTO_MIN:
623 if (i == RTAX_RTT)
624 val /= 8;
625 else if (i == RTAX_RTTVAR)
626 val /= 4;
627
663c3cb2
SH		 628 if (is_json_context())
629 print_uint(PRINT_JSON, mx_names[i],
630 NULL, val);
631 else {
632 if (val >= 1000)
633 fprintf(fp, "%gs ", val/1e3);
634 else
635 fprintf(fp, "%ums ", val);
636 }
968272e7
SH		 637 break;
638 case RTAX_CC_ALGO:
663c3cb2
SH		 639 print_string(PRINT_ANY, "congestion",
640 "%s ", rta_getattr_str(mxrta[i]));
968272e7
SH		 641 break;
642 }
643 }
663c3cb2 644
89ce8012 645 close_json_object();
663c3cb2 646 close_json_array(PRINT_JSON, NULL);
968272e7
SH		 647}
648
f48e1488
SH		 649static void print_rta_multipath(FILE *fp, const struct rtmsg *r,
650 struct rtattr *rta)
651{
652 const struct rtnexthop *nh = RTA_DATA(rta);
653 int len = RTA_PAYLOAD(rta);
654 int first = 1;
655
4ecefff3
JF		 656 open_json_array(PRINT_JSON, "nexthops");
657
c0ec7c9f 658 while (len >= sizeof(*nh)) {
f48e1488
SH		 659 struct rtattr *tb[RTA_MAX + 1];
660
661 if (nh->rtnh_len > len)
662 break;
663
4ecefff3
JF		 664 open_json_object(NULL);
665
666 if ((r->rtm_flags & RTM_F_CLONED) &&
667 r->rtm_type == RTN_MULTICAST) {
668 if (first) {
669 print_string(PRINT_FP, NULL, "Oifs: ", NULL);
670 first = 0;
671 } else {
672 print_string(PRINT_FP, NULL, " ", NULL);
673 }
674 } else
675 print_string(PRINT_FP, NULL, "%s\tnexthop ", _SL_);
f48e1488
SH		 676
677 if (nh->rtnh_len > sizeof(*nh)) {
678 parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh),
679 nh->rtnh_len - sizeof(*nh));
680
681 if (tb[RTA_ENCAP])
682 lwt_print_encap(fp,
683 tb[RTA_ENCAP_TYPE],
684 tb[RTA_ENCAP]);
685 if (tb[RTA_NEWDST])
686 print_rta_newdst(fp, r, tb[RTA_NEWDST]);
687 if (tb[RTA_GATEWAY])
48a1e96d
DA		 688 print_rta_gateway(fp, r->rtm_family,
689 tb[RTA_GATEWAY]);
f48e1488
SH		 690 if (tb[RTA_VIA])
691 print_rta_via(fp, tb[RTA_VIA]);
692 if (tb[RTA_FLOW])
693 print_rta_flow(fp, tb[RTA_FLOW]);
694 }
695
80d1c528
SH		 696 if ((r->rtm_flags & RTM_F_CLONED) &&
697 r->rtm_type == RTN_MULTICAST) {
4ecefff3
JF		 698 print_string(PRINT_ANY, "dev",
699 "%s", ll_index_to_name(nh->rtnh_ifindex));
700
f48e1488 701 if (nh->rtnh_hops != 1)
4ecefff3
JF		 702 print_int(PRINT_ANY, "ttl", "(ttl>%d)", nh->rtnh_hops);
703
704 print_string(PRINT_FP, NULL, " ", NULL);
f48e1488 705 } else {
4ecefff3
JF		 706 print_string(PRINT_ANY, "dev",
707 "dev %s ", ll_index_to_name(nh->rtnh_ifindex));
708
f48e1488 709 if (r->rtm_family != AF_MPLS)
4ecefff3
JF		 710 print_int(PRINT_ANY, "weight",
711 "weight %d ", nh->rtnh_hops + 1);
f48e1488
SH		 712 }
713
714 print_rt_flags(fp, nh->rtnh_flags);
715
716 len -= NLMSG_ALIGN(nh->rtnh_len);
717 nh = RTNH_NEXT(nh);
4ecefff3
JF		 718
719 close_json_object();
f48e1488 720 }
4ecefff3 721 close_json_array(PRINT_JSON, NULL);
f48e1488
SH		 722}
723
cd554f2c 724int print_route(struct nlmsghdr *n, void *arg)
f4ff11e3 725{
56f5daac 726 FILE *fp = (FILE *)arg;
f4ff11e3
DS		 727 struct rtmsg *r = NLMSG_DATA(n);
728 int len = n->nlmsg_len;
56f5daac 729 struct rtattr *tb[RTA_MAX+1];
663c3cb2 730 int family, color, host_len;
f4ff11e3 731 __u32 table;
2f406f2d 732 int ret;
56f5daac 733
f4ff11e3 734 SPRINT_BUF(b1);
f4ff11e3
DS		 735
736 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
737 fprintf(stderr, "Not a route: %08x %08x %08x\n",
738 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
ba7b9777 739 return -1;
f4ff11e3
DS		 740 }
741 if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
742 return 0;
743 len -= NLMSG_LENGTH(sizeof(*r));
744 if (len < 0) {
745 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
746 return -1;
747 }
748
f3a2ddc1 749 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 750
751 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
752 table = rtm_get_table(r, tb);
753
754 if (!filter_nlmsg(n, tb, host_len))
755 return 0;
756
aba5acdf
SH		 757 if (filter.flushb) {
758 struct nlmsghdr *fn;
56f5daac 759
aba5acdf 760 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
cc560825
SH		 761 ret = flush_update();
762 if (ret < 0)
2f406f2d 763 return ret;
aba5acdf 764 }
56f5daac 765 fn = (struct nlmsghdr *)(filter.flushb + NLMSG_ALIGN(filter.flushp));
aba5acdf
SH		 766 memcpy(fn, n, n->nlmsg_len);
767 fn->nlmsg_type = RTM_DELROUTE;
768 fn->nlmsg_flags = NLM_F_REQUEST;
351efcde 769 fn->nlmsg_seq = ++rth.seq;
56f5daac 770 filter.flushp = (((char *)fn) + n->nlmsg_len) - filter.flushb;
aba5acdf
SH		 771 filter.flushed++;
772 if (show_stats < 2)
773 return 0;
774 }
775
663c3cb2 776 open_json_object(NULL);
aba5acdf 777 if (n->nlmsg_type == RTM_DELROUTE)
663c3cb2
SH		 778 print_bool(PRINT_ANY, "deleted", "Deleted ", true);
779
d84b1878
DA		 780 if ((r->rtm_type != RTN_UNICAST || show_details > 0) &&
781 (!filter.typemask || (filter.typemask & (1 << r->rtm_type))))
07366177 782 print_string(PRINT_ANY, "type", "%s ",
663c3cb2 783 rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
aba5acdf 784
663c3cb2 785 color = COLOR_NONE;
aba5acdf 786 if (tb[RTA_DST]) {
56e3eb4c 787 family = get_real_family(r->rtm_type, r->rtm_family);
663c3cb2
SH		 788 color = ifa_family_color(family);
789
aba5acdf 790 if (r->rtm_dst_len != host_len) {
663c3cb2
SH		 791 snprintf(b1, sizeof(b1),
792 "%s/%u", rt_addr_n2a_rta(family, tb[RTA_DST]),
793 r->rtm_dst_len);
aba5acdf 794 } else {
663c3cb2
SH		 795 format_host_rta_r(family, tb[RTA_DST],
796 b1, sizeof(b1));
797
aba5acdf
SH		 798 }
799 } else if (r->rtm_dst_len) {
663c3cb2 800 snprintf(b1, sizeof(b1), "0/%d ", r->rtm_dst_len);
aba5acdf 801 } else {
663c3cb2 802 strncpy(b1, "default", sizeof(b1));
aba5acdf 803 }
663c3cb2
SH		 804 print_color_string(PRINT_ANY, color,
805 "dst", "%s ", b1);
806
aba5acdf 807 if (tb[RTA_SRC]) {
56e3eb4c 808 family = get_real_family(r->rtm_type, r->rtm_family);
663c3cb2
SH		 809 color = ifa_family_color(family);
810
aba5acdf 811 if (r->rtm_src_len != host_len) {
663c3cb2
SH		 812 snprintf(b1, sizeof(b1),
813 "%s/%u",
814 rt_addr_n2a_rta(family, tb[RTA_SRC]),
815 r->rtm_src_len);
aba5acdf 816 } else {
663c3cb2
SH		 817 format_host_rta_r(family, tb[RTA_SRC],
818 b1, sizeof(b1));
aba5acdf 819 }
663c3cb2
SH		 820 print_color_string(PRINT_ANY, color,
821 "from", "from %s ", b1);
aba5acdf 822 } else if (r->rtm_src_len) {
663c3cb2
SH		 823 snprintf(b1, sizeof(b1), "0/%u", r->rtm_src_len);
824
825 print_string(PRINT_ANY, "src", "from %s ", b1);
aba5acdf 826 }
a3484a9f 827
12387e2c
DA		 828 if (tb[RTA_NH_ID])
829 print_uint(PRINT_ANY, "nhid", "nhid %u ",
830 rta_getattr_u32(tb[RTA_NH_ID]));
831
a3484a9f
SH		 832 if (tb[RTA_NEWDST])
833 print_rta_newdst(fp, r, tb[RTA_NEWDST]);
1e529305
RP		 834
835 if (tb[RTA_ENCAP])
836 lwt_print_encap(fp, tb[RTA_ENCAP_TYPE], tb[RTA_ENCAP]);
837
aba5acdf 838 if (r->rtm_tos && filter.tosmask != -1) {
663c3cb2
SH		 839 print_string(PRINT_ANY, "tos", "tos %s ",
840 rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
aba5acdf 841 }
02d2ae55 842
a3484a9f 843 if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len)
48a1e96d 844 print_rta_gateway(fp, r->rtm_family, tb[RTA_GATEWAY]);
a3484a9f
SH		 845
846 if (tb[RTA_VIA])
847 print_rta_via(fp, tb[RTA_VIA]);
56f5daac 848
aba5acdf 849 if (tb[RTA_OIF] && filter.oifmask != -1)
663c3cb2 850 print_rta_if(fp, tb[RTA_OIF], "dev");
aba5acdf 851
bc234301 852 if (table && (table != RT_TABLE_MAIN || show_details > 0) && !filter.tb)
663c3cb2
SH		 853 print_string(PRINT_ANY,
854 "table", "table %s ",
855 rtnl_rttable_n2a(table, b1, sizeof(b1)));
856
80d1c528 857 if (!(r->rtm_flags & RTM_F_CLONED)) {
663c3cb2
SH		 858 if ((r->rtm_protocol != RTPROT_BOOT || show_details > 0) &&
859 filter.protocolmask != -1)
860 print_string(PRINT_ANY,
861 "protocol", "proto %s ",
862 rtnl_rtprot_n2a(r->rtm_protocol,
863 b1, sizeof(b1)));
864
865 if ((r->rtm_scope != RT_SCOPE_UNIVERSE || show_details > 0) &&
866 filter.scopemask != -1)
867 print_string(PRINT_ANY,
868 "scope", "scope %s ",
869 rtnl_rtscope_n2a(r->rtm_scope,
870 b1, sizeof(b1)));
aba5acdf 871 }
663c3cb2 872
aba5acdf 873 if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
663c3cb2
SH		 874 const char *psrc
875 = rt_addr_n2a_rta(r->rtm_family, tb[RTA_PREFSRC]);
876
aba5acdf
SH		 877 /* Do not use format_host(). It is our local addr
878 and symbolic name will not be useful.
663c3cb2
SH		 879 */
880 if (is_json_context())
881 print_string(PRINT_JSON, "prefsrc", NULL, psrc);
882 else {
883 fprintf(fp, "src ");
884 print_color_string(PRINT_FP,
885 ifa_family_color(r->rtm_family),
886 NULL, "%s ", psrc);
887 }
888
aba5acdf 889 }
663c3cb2 890
ed7fdc95 891 if (tb[RTA_PRIORITY] && filter.metricmask != -1)
663c3cb2
SH		 892 print_uint(PRINT_ANY, "metric", "metric %u ",
893 rta_getattr_u32(tb[RTA_PRIORITY]));
b3ab1e68
SH		 894
895 print_rt_flags(fp, r->rtm_flags);
896
b0373bfb 897 if (tb[RTA_MARK]) {
9f1370c0 898 unsigned int mark = rta_getattr_u32(tb[RTA_MARK]);
56f5daac 899
b0373bfb 900 if (mark) {
663c3cb2
SH		 901 if (is_json_context())
902 print_uint(PRINT_JSON, "mark", NULL, mark);
903 else if (mark >= 16)
904 print_0xhex(PRINT_FP, NULL,
90c5c969 905 "mark 0x%llx ", mark);
b0373bfb 906 else
663c3cb2
SH		 907 print_uint(PRINT_FP, NULL,
908 "mark %u ", mark);
b0373bfb
ED		 909 }
910 }
aba5acdf 911
5782965a
SH		 912 if (tb[RTA_FLOW] && filter.realmmask != ~0U)
913 print_rta_flow(fp, tb[RTA_FLOW]);
82252cdc
LC		 914
915 if (tb[RTA_UID])
663c3cb2
SH		 916 print_uint(PRINT_ANY, "uid", "uid %u ",
917 rta_getattr_u32(tb[RTA_UID]));
daf30f6f 918
663c3cb2 919 if (r->rtm_family == AF_INET) {
9107c425 920 if (r->rtm_flags & RTM_F_CLONED)
663c3cb2 921 print_cache_flags(fp, r->rtm_flags);
6e41810e 922
9107c425
DA		 923 if (tb[RTA_CACHEINFO])
924 print_rta_cacheinfo(fp, RTA_DATA(tb[RTA_CACHEINFO]));
aba5acdf 925 } else if (r->rtm_family == AF_INET6) {
9107c425
DA		 926 if (tb[RTA_CACHEINFO])
927 print_rta_cacheinfo(fp, RTA_DATA(tb[RTA_CACHEINFO]));
aba5acdf 928 }
6e41810e 929
968272e7
SH		 930 if (tb[RTA_METRICS])
931 print_rta_metrics(fp, tb[RTA_METRICS]);
aba5acdf 932
1506d8d3
SH		 933 if (tb[RTA_IIF] && filter.iifmask != -1)
934 print_rta_if(fp, tb[RTA_IIF], "iif");
b3ab1e68 935
8cfc2d47
SH		 936 if (tb[RTA_PREF])
937 print_rt_pref(fp, rta_getattr_u8(tb[RTA_PREF]));
938
c44d18ea 939 if (tb[RTA_TTL_PROPAGATE]) {
94b0c901 940 bool propagate = rta_getattr_u8(tb[RTA_TTL_PROPAGATE]);
663c3cb2
SH		 941
942 if (is_json_context())
943 print_bool(PRINT_JSON, "ttl-propogate", NULL,
94b0c901 944 propagate);
c44d18ea 945 else
663c3cb2
SH		 946 print_string(PRINT_FP, NULL,
947 "ttl-propogate %s",
94b0c901 948 propagate ? "enabled" : "disabled");
c44d18ea 949 }
663c3cb2 950
320c5c6e
DS		 951 if (tb[RTA_MULTIPATH])
952 print_rta_multipath(fp, r, tb[RTA_MULTIPATH]);
953
954 /* If you are adding new route RTA_XXXX then place it above
955 * the RTA_MULTIPATH else it will appear that the last nexthop
956 * in the ECMP has new attributes
957 */
958
663c3cb2
SH		 959 print_string(PRINT_FP, NULL, "\n", NULL);
960 close_json_object();
aba5acdf
SH		 961 fflush(fp);
962 return 0;
963}
964
1e529305 965static int parse_one_nh(struct nlmsghdr *n, struct rtmsg *r,
bd59e5b1 966 struct rtattr *rta, size_t len, struct rtnexthop *rtnh,
d1f28cf1 967 int *argcp, char ***argvp)
aba5acdf
SH		 968{
969 int argc = *argcp;
970 char **argv = *argvp;
971
972 while (++argv, --argc > 0) {
973 if (strcmp(*argv, "via") == 0) {
4d6c3796 974 inet_prefix addr;
93ae2835 975 int family;
56f5daac 976
aba5acdf 977 NEXT_ARG();
93ae2835
EB		 978 family = read_family(*argv);
979 if (family == AF_UNSPEC)
980 family = r->rtm_family;
981 else
982 NEXT_ARG();
983 get_addr(&addr, *argv, family);
4d6c3796
VB		 984 if (r->rtm_family == AF_UNSPEC)
985 r->rtm_family = addr.family;
93ae2835 986 if (addr.family == r->rtm_family) {
bd59e5b1
PS		 987 if (rta_addattr_l(rta, len, RTA_GATEWAY,
988 &addr.data, addr.bytelen))
989 return -1;
990 rtnh->rtnh_len += sizeof(struct rtattr)
991 + addr.bytelen;
93ae2835 992 } else {
bd59e5b1
PS		 993 if (rta_addattr_l(rta, len, RTA_VIA,
994 &addr.family, addr.bytelen + 2))
995 return -1;
996 rtnh->rtnh_len += RTA_SPACE(addr.bytelen + 2);
93ae2835 997 }
aba5acdf
SH		 998 } else if (strcmp(*argv, "dev") == 0) {
999 NEXT_ARG();
cc560825 1000 rtnh->rtnh_ifindex = ll_name_to_index(*argv);
fe99adbc
SP		 1001 if (!rtnh->rtnh_ifindex)
1002 return nodev(*argv);
aba5acdf 1003 } else if (strcmp(*argv, "weight") == 0) {
56f5daac
SH		 1004 unsigned int w;
1005
aba5acdf
SH		 1006 NEXT_ARG();
1007 if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
1008 invarg("\"weight\" is invalid\n", *argv);
1009 rtnh->rtnh_hops = w - 1;
1010 } else if (strcmp(*argv, "onlink") == 0) {
1011 rtnh->rtnh_flags |= RTNH_F_ONLINK;
f4f6d640
PM		 1012 } else if (matches(*argv, "realms") == 0) {
1013 __u32 realm;
56f5daac 1014
f4f6d640 1015 NEXT_ARG();
d583e88e 1016 if (get_rt_realms_or_raw(&realm, *argv))
f4f6d640 1017 invarg("\"realm\" value is invalid\n", *argv);
bd59e5b1
PS		 1018 if (rta_addattr32(rta, len, RTA_FLOW, realm))
1019 return -1;
f4f6d640 1020 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
1e529305 1021 } else if (strcmp(*argv, "encap") == 0) {
bd59e5b1 1022 int old_len = rta->rta_len;
1e529305 1023
73924010
DA		 1024 if (lwt_parse_encap(rta, len, &argc, &argv,
1025 RTA_ENCAP, RTA_ENCAP_TYPE))
bd59e5b1
PS		 1026 return -1;
1027 rtnh->rtnh_len += rta->rta_len - old_len;
ecc509f9
RP		 1028 } else if (strcmp(*argv, "as") == 0) {
1029 inet_prefix addr;
1030
1031 NEXT_ARG();
1032 if (strcmp(*argv, "to") == 0)
1033 NEXT_ARG();
1034 get_addr(&addr, *argv, r->rtm_family);
bd59e5b1
PS		 1035 if (rta_addattr_l(rta, len, RTA_NEWDST,
1036 &addr.data, addr.bytelen))
1037 return -1;
ecc509f9 1038 rtnh->rtnh_len += sizeof(struct rtattr) + addr.bytelen;
aba5acdf
SH		 1039 } else
1040 break;
1041 }
1042 *argcp = argc;
1043 *argvp = argv;
1044 return 0;
1045}
1046
d1f28cf1
SH		 1047static int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r,
1048 int argc, char **argv)
aba5acdf 1049{
bd59e5b1 1050 char buf[4096];
56f5daac 1051 struct rtattr *rta = (void *)buf;
aba5acdf
SH		 1052 struct rtnexthop *rtnh;
1053
1054 rta->rta_type = RTA_MULTIPATH;
1055 rta->rta_len = RTA_LENGTH(0);
1056 rtnh = RTA_DATA(rta);
1057
1058 while (argc > 0) {
1059 if (strcmp(*argv, "nexthop") != 0) {
1060 fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
1061 exit(-1);
1062 }
1063 if (argc <= 1) {
1064 fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
1065 exit(-1);
1066 }
1067 memset(rtnh, 0, sizeof(*rtnh));
1068 rtnh->rtnh_len = sizeof(*rtnh);
1069 rta->rta_len += rtnh->rtnh_len;
bd59e5b1 1070 if (parse_one_nh(n, r, rta, 4096, rtnh, &argc, &argv)) {
ee53b42f
JS		 1071 fprintf(stderr, "Error: cannot parse nexthop\n");
1072 exit(-1);
1073 }
aba5acdf
SH		 1074 rtnh = RTNH_NEXT(rtnh);
1075 }
1076
1077 if (rta->rta_len > RTA_LENGTH(0))
bd59e5b1
PS		 1078 return addattr_l(n, 4096, RTA_MULTIPATH,
1079 RTA_DATA(rta), RTA_PAYLOAD(rta));
aba5acdf
SH		 1080 return 0;
1081}
1082
56f5daac 1083static int iproute_modify(int cmd, unsigned int flags, int argc, char **argv)
aba5acdf 1084{
aba5acdf 1085 struct {
4806867a
SH		 1086 struct nlmsghdr n;
1087 struct rtmsg r;
bd59e5b1 1088 char buf[4096];
d17b136f
PS		 1089 } req = {
1090 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)),
1091 .n.nlmsg_flags = NLM_F_REQUEST | flags,
1092 .n.nlmsg_type = cmd,
1093 .r.rtm_family = preferred_family,
1094 .r.rtm_table = RT_TABLE_MAIN,
1095 .r.rtm_scope = RT_SCOPE_NOWHERE,
1096 };
aba5acdf 1097 char mxbuf[256];
56f5daac
SH		 1098 struct rtattr *mxrta = (void *)mxbuf;
1099 unsigned int mxlock = 0;
aba5acdf
SH		 1100 char *d = NULL;
1101 int gw_ok = 0;
1102 int dst_ok = 0;
1103 int nhs_ok = 0;
1104 int scope_ok = 0;
1105 int table_ok = 0;
54e0b2e7 1106 int raw = 0;
f638e9f7 1107 int type_ok = 0;
12387e2c 1108 __u32 nhid = 0;
aba5acdf 1109
aba5acdf
SH		 1110 if (cmd != RTM_DELROUTE) {
1111 req.r.rtm_protocol = RTPROT_BOOT;
1112 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
1113 req.r.rtm_type = RTN_UNICAST;
1114 }
1115
1116 mxrta->rta_type = RTA_METRICS;
1117 mxrta->rta_len = RTA_LENGTH(0);
1118
1119 while (argc > 0) {
1120 if (strcmp(*argv, "src") == 0) {
1121 inet_prefix addr;
56f5daac 1122
aba5acdf
SH		 1123 NEXT_ARG();
1124 get_addr(&addr, *argv, req.r.rtm_family);
1125 if (req.r.rtm_family == AF_UNSPEC)
1126 req.r.rtm_family = addr.family;
21fef525
SH		 1127 addattr_l(&req.n, sizeof(req),
1128 RTA_PREFSRC, &addr.data, addr.bytelen);
6f7a9f4d
EB		 1129 } else if (strcmp(*argv, "as") == 0) {
1130 inet_prefix addr;
56f5daac 1131
6f7a9f4d
EB		 1132 NEXT_ARG();
1133 if (strcmp(*argv, "to") == 0) {
1134 NEXT_ARG();
1135 }
1136 get_addr(&addr, *argv, req.r.rtm_family);
1137 if (req.r.rtm_family == AF_UNSPEC)
1138 req.r.rtm_family = addr.family;
21fef525
SH		 1139 addattr_l(&req.n, sizeof(req),
1140 RTA_NEWDST, &addr.data, addr.bytelen);
aba5acdf
SH		 1141 } else if (strcmp(*argv, "via") == 0) {
1142 inet_prefix addr;
93ae2835 1143 int family;
56f5daac 1144
11f2c753
DA		 1145 if (gw_ok) {
1146 invarg("use nexthop syntax to specify multiple via\n",
1147 *argv);
1148 }
aba5acdf
SH		 1149 gw_ok = 1;
1150 NEXT_ARG();
93ae2835
EB		 1151 family = read_family(*argv);
1152 if (family == AF_UNSPEC)
1153 family = req.r.rtm_family;
1154 else
1155 NEXT_ARG();
1156 get_addr(&addr, *argv, family);
aba5acdf
SH		 1157 if (req.r.rtm_family == AF_UNSPEC)
1158 req.r.rtm_family = addr.family;
93ae2835 1159 if (addr.family == req.r.rtm_family)
ecc509f9
RP		 1160 addattr_l(&req.n, sizeof(req), RTA_GATEWAY,
1161 &addr.data, addr.bytelen);
93ae2835 1162 else
ecc509f9
RP		 1163 addattr_l(&req.n, sizeof(req), RTA_VIA,
1164 &addr.family, addr.bytelen+2);
aba5acdf
SH		 1165 } else if (strcmp(*argv, "from") == 0) {
1166 inet_prefix addr;
56f5daac 1167
aba5acdf
SH		 1168 NEXT_ARG();
1169 get_prefix(&addr, *argv, req.r.rtm_family);
1170 if (req.r.rtm_family == AF_UNSPEC)
1171 req.r.rtm_family = addr.family;
1172 if (addr.bytelen)
1173 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
1174 req.r.rtm_src_len = addr.bitlen;
1175 } else if (strcmp(*argv, "tos") == 0 ||
1176 matches(*argv, "dsfield") == 0) {
1177 __u32 tos;
56f5daac 1178
aba5acdf
SH		 1179 NEXT_ARG();
1180 if (rtnl_dsfield_a2n(&tos, *argv))
1181 invarg("\"tos\" value is invalid\n", *argv);
1182 req.r.rtm_tos = tos;
56f5daac 1183 } else if (strcmp(*argv, "expires") == 0) {
68eede25 1184 __u32 expires;
56f5daac 1185
68eede25
HL		 1186 NEXT_ARG();
1187 if (get_u32(&expires, *argv, 0))
1188 invarg("\"expires\" value is invalid\n", *argv);
eecc0069 1189 addattr32(&req.n, sizeof(req), RTA_EXPIRES, expires);
aba5acdf
SH		 1190 } else if (matches(*argv, "metric") == 0 ||
1191 matches(*argv, "priority") == 0 ||
194e9b85 1192 strcmp(*argv, "preference") == 0) {
aba5acdf 1193 __u32 metric;
56f5daac 1194
aba5acdf
SH		 1195 NEXT_ARG();
1196 if (get_u32(&metric, *argv, 0))
1197 invarg("\"metric\" value is invalid\n", *argv);
1198 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
1199 } else if (strcmp(*argv, "scope") == 0) {
f332d169 1200 __u32 scope = 0;
56f5daac 1201
aba5acdf
SH		 1202 NEXT_ARG();
1203 if (rtnl_rtscope_a2n(&scope, *argv))
1204 invarg("invalid \"scope\" value\n", *argv);
1205 req.r.rtm_scope = scope;
1206 scope_ok = 1;
1207 } else if (strcmp(*argv, "mtu") == 0) {
56f5daac
SH		 1208 unsigned int mtu;
1209
aba5acdf
SH		 1210 NEXT_ARG();
1211 if (strcmp(*argv, "lock") == 0) {
1212 mxlock |= (1<<RTAX_MTU);
1213 NEXT_ARG();
1214 }
1215 if (get_unsigned(&mtu, *argv, 0))
1216 invarg("\"mtu\" value is invalid\n", *argv);
1217 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
71e58151 1218 } else if (strcmp(*argv, "hoplimit") == 0) {
56f5daac
SH		 1219 unsigned int hoplimit;
1220
71e58151
GBY		 1221 NEXT_ARG();
1222 if (strcmp(*argv, "lock") == 0) {
1223 mxlock |= (1<<RTAX_HOPLIMIT);
1224 NEXT_ARG();
1225 }
ea6cbab7 1226 if (get_unsigned(&hoplimit, *argv, 0) || hoplimit > 255)
71e58151
GBY		 1227 invarg("\"hoplimit\" value is invalid\n", *argv);
1228 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit);
aba5acdf 1229 } else if (strcmp(*argv, "advmss") == 0) {
56f5daac
SH		 1230 unsigned int mss;
1231
aba5acdf
SH		 1232 NEXT_ARG();
1233 if (strcmp(*argv, "lock") == 0) {
1234 mxlock |= (1<<RTAX_ADVMSS);
1235 NEXT_ARG();
1236 }
1237 if (get_unsigned(&mss, *argv, 0))
1238 invarg("\"mss\" value is invalid\n", *argv);
1239 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
aba5acdf 1240 } else if (matches(*argv, "reordering") == 0) {
56f5daac
SH		 1241 unsigned int reord;
1242
aba5acdf
SH		 1243 NEXT_ARG();
1244 if (strcmp(*argv, "lock") == 0) {
1245 mxlock |= (1<<RTAX_REORDERING);
1246 NEXT_ARG();
1247 }
1248 if (get_unsigned(&reord, *argv, 0))
1249 invarg("\"reordering\" value is invalid\n", *argv);
1250 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
aba5acdf 1251 } else if (strcmp(*argv, "rtt") == 0) {
56f5daac
SH		 1252 unsigned int rtt;
1253
aba5acdf
SH		 1254 NEXT_ARG();
1255 if (strcmp(*argv, "lock") == 0) {
1256 mxlock |= (1<<RTAX_RTT);
1257 NEXT_ARG();
1258 }
81d03dc3 1259 if (get_time_rtt(&rtt, *argv, &raw))
aba5acdf 1260 invarg("\"rtt\" value is invalid\n", *argv);
0612519e 1261 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT,
54e0b2e7
RJ		 1262 (raw) ? rtt : rtt * 8);
1263 } else if (strcmp(*argv, "rto_min") == 0) {
56f5daac
SH		 1264 unsigned int rto_min;
1265
54e0b2e7
RJ		 1266 NEXT_ARG();
1267 mxlock |= (1<<RTAX_RTO_MIN);
81d03dc3 1268 if (get_time_rtt(&rto_min, *argv, &raw))
54e0b2e7
RJ		 1269 invarg("\"rto_min\" value is invalid\n",
1270 *argv);
1271 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN,
1272 rto_min);
aba5acdf 1273 } else if (matches(*argv, "window") == 0) {
56f5daac
SH		 1274 unsigned int win;
1275
aba5acdf
SH		 1276 NEXT_ARG();
1277 if (strcmp(*argv, "lock") == 0) {
1278 mxlock |= (1<<RTAX_WINDOW);
1279 NEXT_ARG();
1280 }
1281 if (get_unsigned(&win, *argv, 0))
1282 invarg("\"window\" value is invalid\n", *argv);
1283 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
1284 } else if (matches(*argv, "cwnd") == 0) {
56f5daac
SH		 1285 unsigned int win;
1286
aba5acdf
SH		 1287 NEXT_ARG();
1288 if (strcmp(*argv, "lock") == 0) {
1289 mxlock |= (1<<RTAX_CWND);
1290 NEXT_ARG();
1291 }
1292 if (get_unsigned(&win, *argv, 0))
1293 invarg("\"cwnd\" value is invalid\n", *argv);
1294 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
a1f1143e 1295 } else if (matches(*argv, "initcwnd") == 0) {
56f5daac
SH		 1296 unsigned int win;
1297
a1f1143e
VW		 1298 NEXT_ARG();
1299 if (strcmp(*argv, "lock") == 0) {
1300 mxlock |= (1<<RTAX_INITCWND);
1301 NEXT_ARG();
1302 }
1303 if (get_unsigned(&win, *argv, 0))
1304 invarg("\"initcwnd\" value is invalid\n", *argv);
21fef525
SH		 1305 rta_addattr32(mxrta, sizeof(mxbuf),
1306 RTAX_INITCWND, win);
f5fd8003 1307 } else if (matches(*argv, "initrwnd") == 0) {
56f5daac
SH		 1308 unsigned int win;
1309
f5fd8003 1310 NEXT_ARG();
1311 if (strcmp(*argv, "lock") == 0) {
1312 mxlock |= (1<<RTAX_INITRWND);
1313 NEXT_ARG();
1314 }
1315 if (get_unsigned(&win, *argv, 0))
1316 invarg("\"initrwnd\" value is invalid\n", *argv);
21fef525
SH		 1317 rta_addattr32(mxrta, sizeof(mxbuf),
1318 RTAX_INITRWND, win);
29d1f730
FW		 1319 } else if (matches(*argv, "features") == 0) {
1320 unsigned int features = 0;
1321
1322 while (argc > 0) {
1323 NEXT_ARG();
1324
1325 if (strcmp(*argv, "ecn") == 0)
1326 features |= RTAX_FEATURE_ECN;
1327 else
1328 invarg("\"features\" value not valid\n", *argv);
1329 break;
1330 }
1331
21fef525
SH		 1332 rta_addattr32(mxrta, sizeof(mxbuf),
1333 RTAX_FEATURES, features);
b37f2c89 1334 } else if (matches(*argv, "quickack") == 0) {
56f5daac
SH		 1335 unsigned int quickack;
1336
b37f2c89
CW		 1337 NEXT_ARG();
1338 if (get_unsigned(&quickack, *argv, 0))
1339 invarg("\"quickack\" value is invalid\n", *argv);
1340 if (quickack != 1 && quickack != 0)
1341 invarg("\"quickack\" value should be 0 or 1\n", *argv);
21fef525
SH		 1342 rta_addattr32(mxrta, sizeof(mxbuf),
1343 RTAX_QUICKACK, quickack);
6ef87f9c
DB		 1344 } else if (matches(*argv, "congctl") == 0) {
1345 NEXT_ARG();
1346 if (strcmp(*argv, "lock") == 0) {
1347 mxlock |= 1 << RTAX_CC_ALGO;
1348 NEXT_ARG();
1349 }
1350 rta_addattr_l(mxrta, sizeof(mxbuf), RTAX_CC_ALGO, *argv,
1351 strlen(*argv));
aba5acdf 1352 } else if (matches(*argv, "rttvar") == 0) {
56f5daac
SH		 1353 unsigned int win;
1354
aba5acdf
SH		 1355 NEXT_ARG();
1356 if (strcmp(*argv, "lock") == 0) {
1357 mxlock |= (1<<RTAX_RTTVAR);
1358 NEXT_ARG();
1359 }
81d03dc3 1360 if (get_time_rtt(&win, *argv, &raw))
aba5acdf 1361 invarg("\"rttvar\" value is invalid\n", *argv);
54e0b2e7
RJ		 1362 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR,
1363 (raw) ? win : win * 4);
aba5acdf 1364 } else if (matches(*argv, "ssthresh") == 0) {
56f5daac
SH		 1365 unsigned int win;
1366
aba5acdf
SH		 1367 NEXT_ARG();
1368 if (strcmp(*argv, "lock") == 0) {
1369 mxlock |= (1<<RTAX_SSTHRESH);
1370 NEXT_ARG();
1371 }
1372 if (get_unsigned(&win, *argv, 0))
1373 invarg("\"ssthresh\" value is invalid\n", *argv);
1374 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
1375 } else if (matches(*argv, "realms") == 0) {
1376 __u32 realm;
56f5daac 1377
aba5acdf 1378 NEXT_ARG();
d583e88e 1379 if (get_rt_realms_or_raw(&realm, *argv))
aba5acdf
SH		 1380 invarg("\"realm\" value is invalid\n", *argv);
1381 addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
1382 } else if (strcmp(*argv, "onlink") == 0) {
1383 req.r.rtm_flags |= RTNH_F_ONLINK;
aba5acdf
SH		 1384 } else if (strcmp(*argv, "nexthop") == 0) {
1385 nhs_ok = 1;
1386 break;
12387e2c
DA		 1387 } else if (!strcmp(*argv, "nhid")) {
1388 NEXT_ARG();
1389 if (get_u32(&nhid, *argv, 0))
1390 invarg("\"id\" value is invalid\n", *argv);
1391 addattr32(&req.n, sizeof(req), RTA_NH_ID, nhid);
aba5acdf 1392 } else if (matches(*argv, "protocol") == 0) {
f332d169 1393 __u32 prot;
56f5daac 1394
aba5acdf
SH		 1395 NEXT_ARG();
1396 if (rtnl_rtprot_a2n(&prot, *argv))
1397 invarg("\"protocol\" value is invalid\n", *argv);
1398 req.r.rtm_protocol = prot;
aba5acdf 1399 } else if (matches(*argv, "table") == 0) {
f332d169 1400 __u32 tid;
56f5daac 1401
aba5acdf
SH		 1402 NEXT_ARG();
1403 if (rtnl_rttable_a2n(&tid, *argv))
1404 invarg("\"table\" value is invalid\n", *argv);
34e95647
PM		 1405 if (tid < 256)
1406 req.r.rtm_table = tid;
1407 else {
1408 req.r.rtm_table = RT_TABLE_UNSPEC;
1409 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
1410 }
aba5acdf 1411 table_ok = 1;
0130f012
DA		 1412 } else if (matches(*argv, "vrf") == 0) {
1413 __u32 tid;
1414
1415 NEXT_ARG();
1416 tid = ipvrf_get_table(*argv);
1417 if (tid == 0)
1418 invarg("Invalid VRF\n", *argv);
1419 if (tid < 256)
1420 req.r.rtm_table = tid;
1421 else {
1422 req.r.rtm_table = RT_TABLE_UNSPEC;
1423 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
1424 }
1425 table_ok = 1;
aba5acdf
SH		 1426 } else if (strcmp(*argv, "dev") == 0 ||
1427 strcmp(*argv, "oif") == 0) {
1428 NEXT_ARG();
1429 d = *argv;
194e9b85
LR		 1430 } else if (matches(*argv, "pref") == 0) {
1431 __u8 pref;
56f5daac 1432
194e9b85
LR		 1433 NEXT_ARG();
1434 if (strcmp(*argv, "low") == 0)
1435 pref = ICMPV6_ROUTER_PREF_LOW;
1436 else if (strcmp(*argv, "medium") == 0)
1437 pref = ICMPV6_ROUTER_PREF_MEDIUM;
1438 else if (strcmp(*argv, "high") == 0)
1439 pref = ICMPV6_ROUTER_PREF_HIGH;
1440 else if (get_u8(&pref, *argv, 0))
1441 invarg("\"pref\" value is invalid\n", *argv);
1442 addattr8(&req.n, sizeof(req), RTA_PREF, pref);
1e529305
RP		 1443 } else if (strcmp(*argv, "encap") == 0) {
1444 char buf[1024];
56f5daac 1445 struct rtattr *rta = (void *)buf;
1e529305
RP		 1446
1447 rta->rta_type = RTA_ENCAP;
1448 rta->rta_len = RTA_LENGTH(0);
1449
73924010
DA		 1450 lwt_parse_encap(rta, sizeof(buf), &argc, &argv,
1451 RTA_ENCAP, RTA_ENCAP_TYPE);
1e529305
RP		 1452
1453 if (rta->rta_len > RTA_LENGTH(0))
21fef525
SH		 1454 addraw_l(&req.n, 1024
1455 , RTA_DATA(rta), RTA_PAYLOAD(rta));
c44d18ea
RS		 1456 } else if (strcmp(*argv, "ttl-propagate") == 0) {
1457 __u8 ttl_prop;
1458
1459 NEXT_ARG();
1460 if (matches(*argv, "enabled") == 0)
1461 ttl_prop = 1;
1462 else if (matches(*argv, "disabled") == 0)
1463 ttl_prop = 0;
1464 else
1465 invarg("\"ttl-propagate\" value is invalid\n",
1466 *argv);
1467
1468 addattr8(&req.n, sizeof(req), RTA_TTL_PROPAGATE,
1469 ttl_prop);
e54ed380
CP		 1470 } else if (matches(*argv, "fastopen_no_cookie") == 0) {
1471 unsigned int fastopen_no_cookie;
1472
1473 NEXT_ARG();
1474 if (get_unsigned(&fastopen_no_cookie, *argv, 0))
1475 invarg("\"fastopen_no_cookie\" value is invalid\n", *argv);
1476 if (fastopen_no_cookie != 1 && fastopen_no_cookie != 0)
1477 invarg("\"fastopen_no_cookie\" value should be 0 or 1\n", *argv);
1478 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_FASTOPEN_NO_COOKIE, fastopen_no_cookie);
aba5acdf
SH		 1479 } else {
1480 int type;
1481 inet_prefix dst;
1482
1483 if (strcmp(*argv, "to") == 0) {
1484 NEXT_ARG();
1485 }
1486 if ((**argv < '0' || **argv > '9') &&
1487 rtnl_rtntype_a2n(&type, *argv) == 0) {
1488 NEXT_ARG();
1489 req.r.rtm_type = type;
f638e9f7 1490 type_ok = 1;
aba5acdf
SH		 1491 }
1492
1493 if (matches(*argv, "help") == 0)
1494 usage();
1495 if (dst_ok)
1496 duparg2("to", *argv);
1497 get_prefix(&dst, *argv, req.r.rtm_family);
1498 if (req.r.rtm_family == AF_UNSPEC)
1499 req.r.rtm_family = dst.family;
1500 req.r.rtm_dst_len = dst.bitlen;
1501 dst_ok = 1;
1502 if (dst.bytelen)
21fef525
SH		 1503 addattr_l(&req.n, sizeof(req),
1504 RTA_DST, &dst.data, dst.bytelen);
aba5acdf
SH		 1505 }
1506 argc--; argv++;
1507 }
1508
922b4822
PS		 1509 if (!dst_ok)
1510 usage();
1511
7b201d60 1512 if (d) {
cc560825 1513 int idx = ll_name_to_index(d);
aba5acdf 1514
fe99adbc
SP		 1515 if (!idx)
1516 return nodev(d);
7b201d60 1517 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
aba5acdf
SH		 1518 }
1519
1520 if (mxrta->rta_len > RTA_LENGTH(0)) {
1521 if (mxlock)
1522 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
1523 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
1524 }
1525
bd59e5b1
PS		 1526 if (nhs_ok && parse_nexthops(&req.n, &req.r, argc, argv))
1527 return -1;
aba5acdf 1528
f638e9f7
RP		 1529 if (req.r.rtm_family == AF_UNSPEC)
1530 req.r.rtm_family = AF_INET;
1531
aba5acdf
SH		 1532 if (!table_ok) {
1533 if (req.r.rtm_type == RTN_LOCAL ||
1534 req.r.rtm_type == RTN_BROADCAST ||
1535 req.r.rtm_type == RTN_NAT ||
1536 req.r.rtm_type == RTN_ANYCAST)
1537 req.r.rtm_table = RT_TABLE_LOCAL;
1538 }
1539 if (!scope_ok) {
f638e9f7
RP		 1540 if (req.r.rtm_family == AF_INET6 ||
1541 req.r.rtm_family == AF_MPLS)
1542 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
1543 else if (req.r.rtm_type == RTN_LOCAL ||
1544 req.r.rtm_type == RTN_NAT)
aba5acdf
SH		 1545 req.r.rtm_scope = RT_SCOPE_HOST;
1546 else if (req.r.rtm_type == RTN_BROADCAST ||
1547 req.r.rtm_type == RTN_MULTICAST ||
1548 req.r.rtm_type == RTN_ANYCAST)
1549 req.r.rtm_scope = RT_SCOPE_LINK;
1550 else if (req.r.rtm_type == RTN_UNICAST ||
1551 req.r.rtm_type == RTN_UNSPEC) {
1552 if (cmd == RTM_DELROUTE)
1553 req.r.rtm_scope = RT_SCOPE_NOWHERE;
12387e2c 1554 else if (!gw_ok && !nhs_ok && !nhid)
aba5acdf
SH		 1555 req.r.rtm_scope = RT_SCOPE_LINK;
1556 }
1557 }
1558
f638e9f7
RP		 1559 if (!type_ok && req.r.rtm_family == AF_MPLS)
1560 req.r.rtm_type = RTN_UNICAST;
aba5acdf 1561
86bf43c7 1562 if (rtnl_talk(&rth, &req.n, NULL) < 0)
d58ba4ba 1563 return -2;
aba5acdf
SH		 1564
1565 return 0;
1566}
1567
aba5acdf
SH		 1568static int iproute_flush_cache(void)
1569{
1570#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1571
1572 int len;
56f5daac 1573 int flush_fd = open(ROUTE_FLUSH_PATH, O_WRONLY);
aba5acdf
SH		 1574 char *buffer = "-1";
1575
1576 if (flush_fd < 0) {
56f5daac 1577 fprintf(stderr, "Cannot open \"%s\": %s\n",
9827fa57 1578 ROUTE_FLUSH_PATH, strerror(errno));
aba5acdf
SH		 1579 return -1;
1580 }
1581
56f5daac 1582 len = strlen(buffer);
ae665a52 1583
56f5daac
SH		 1584 if ((write(flush_fd, (void *)buffer, len)) < len) {
1585 fprintf(stderr, "Cannot flush routing cache\n");
25352af7 1586 close(flush_fd);
aba5acdf
SH		 1587 return -1;
1588 }
1589 close(flush_fd);
1590 return 0;
1591}
1592
76c61b34
PE		 1593static __u32 route_dump_magic = 0x45311224;
1594
cd554f2c 1595static int save_route(struct nlmsghdr *n, void *arg)
f4ff11e3
DS		 1596{
1597 int ret;
1598 int len = n->nlmsg_len;
1599 struct rtmsg *r = NLMSG_DATA(n);
1600 struct rtattr *tb[RTA_MAX+1];
f3a2ddc1 1601 int host_len;
f4ff11e3 1602
f3a2ddc1 1603 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 1604 len -= NLMSG_LENGTH(sizeof(*r));
1605 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1606
1607 if (!filter_nlmsg(n, tb, host_len))
1608 return 0;
1609
1610 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
1611 if ((ret > 0) && (ret != n->nlmsg_len)) {
1612 fprintf(stderr, "Short write while saving nlmsg\n");
1613 ret = -EIO;
1614 }
1615
1616 return ret == n->nlmsg_len ? 0 : ret;
1617}
aba5acdf 1618
76c61b34
PE		 1619static int save_route_prep(void)
1620{
1621 int ret;
1622
1623 if (isatty(STDOUT_FILENO)) {
14645ec2 1624 fprintf(stderr, "Not sending a binary stream to stdout\n");
76c61b34
PE		 1625 return -1;
1626 }
1627
1628 ret = write(STDOUT_FILENO, &route_dump_magic, sizeof(route_dump_magic));
1629 if (ret != sizeof(route_dump_magic)) {
1630 fprintf(stderr, "Can't write magic to dump file\n");
1631 return -1;
1632 }
1633
1634 return 0;
1635}
1636
b5cf2636
SB		 1637static int iproute_dump_filter(struct nlmsghdr *nlh, int reqlen)
1638{
1639 struct rtmsg *rtm = NLMSG_DATA(nlh);
1640 int err;
1641
1642 rtm->rtm_protocol = filter.protocol;
1643 if (filter.cloned)
1644 rtm->rtm_flags |= RTM_F_CLONED;
1645
1646 if (filter.tb) {
1647 err = addattr32(nlh, reqlen, RTA_TABLE, filter.tb);
1648 if (err)
1649 return err;
1650 }
1651
1652 if (filter.oif) {
1653 err = addattr32(nlh, reqlen, RTA_OIF, filter.oif);
1654 if (err)
1655 return err;
1656 }
1657
1658 return 0;
1659}
1660
8d4f35de 1661static int iproute_flush(int family, rtnl_filter_t filter_fn)
432e5f97
SH		 1662{
1663 time_t start = time(0);
1664 char flushb[4096-512];
1665 int round = 0;
1666 int ret;
1667
1668 if (filter.cloned) {
8d4f35de 1669 if (family != AF_INET6) {
432e5f97
SH		 1670 iproute_flush_cache();
1671 if (show_stats)
1672 printf("*** IPv4 routing cache is flushed.\n");
1673 }
8d4f35de 1674 if (family == AF_INET)
432e5f97
SH		 1675 return 0;
1676 }
1677
1678 filter.flushb = flushb;
1679 filter.flushp = 0;
1680 filter.flushe = sizeof(flushb);
1681
1682 for (;;) {
b5cf2636 1683 if (rtnl_routedump_req(&rth, family, iproute_dump_filter) < 0) {
432e5f97
SH		 1684 perror("Cannot send dump request");
1685 return -2;
1686 }
1687 filter.flushed = 0;
1688 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
1689 fprintf(stderr, "Flush terminated\n");
1690 return -2;
1691 }
1692 if (filter.flushed == 0) {
1693 if (show_stats) {
1694 if (round == 0 &&
8d4f35de 1695 (!filter.cloned || family == AF_INET6))
432e5f97
SH		 1696 printf("Nothing to flush.\n");
1697 else
1698 printf("*** Flush is complete after %d round%s ***\n",
1699 round, round > 1 ? "s" : "");
1700 }
1701 fflush(stdout);
1702 return 0;
1703 }
1704 round++;
1705 ret = flush_update();
1706 if (ret < 0)
1707 return ret;
1708
1709 if (time(0) - start > 30) {
1710 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1711 (long)(time(0) - start), filter.flushed);
1712 return -1;
1713 }
1714
1715 if (show_stats) {
1716 printf("\n*** Round %d, deleting %d entries ***\n",
1717 round, filter.flushed);
1718 fflush(stdout);
1719 }
1720 }
1721}
1722
f4ff11e3 1723static int iproute_list_flush_or_save(int argc, char **argv, int action)
aba5acdf 1724{
8d4f35de 1725 int dump_family = preferred_family;
aba5acdf
SH		 1726 char *id = NULL;
1727 char *od = NULL;
b0373bfb 1728 unsigned int mark = 0;
f4ff11e3
DS		 1729 rtnl_filter_t filter_fn;
1730
76c61b34
PE		 1731 if (action == IPROUTE_SAVE) {
1732 if (save_route_prep())
1733 return -1;
1734
f4ff11e3 1735 filter_fn = save_route;
76c61b34 1736 } else
f4ff11e3 1737 filter_fn = print_route;
aba5acdf 1738
093b7646 1739 iproute_reset_filter(0);
aba5acdf
SH		 1740 filter.tb = RT_TABLE_MAIN;
1741
f4ff11e3 1742 if ((action == IPROUTE_FLUSH) && argc <= 0) {
aba5acdf
SH		 1743 fprintf(stderr, "\"ip route flush\" requires arguments.\n");
1744 return -1;
1745 }
1746
1747 while (argc > 0) {
1748 if (matches(*argv, "table") == 0) {
f332d169 1749 __u32 tid;
56f5daac 1750
aba5acdf
SH		 1751 NEXT_ARG();
1752 if (rtnl_rttable_a2n(&tid, *argv)) {
1753 if (strcmp(*argv, "all") == 0) {
bd4bcdad 1754 filter.tb = 0;
aba5acdf 1755 } else if (strcmp(*argv, "cache") == 0) {
bd4bcdad 1756 filter.cloned = 1;
aba5acdf
SH		 1757 } else if (strcmp(*argv, "help") == 0) {
1758 usage();
1759 } else {
1760 invarg("table id value is invalid\n", *argv);
1761 }
bd4bcdad
PM		 1762 } else
1763 filter.tb = tid;
0130f012
DA		 1764 } else if (matches(*argv, "vrf") == 0) {
1765 __u32 tid;
1766
1767 NEXT_ARG();
1768 tid = ipvrf_get_table(*argv);
1769 if (tid == 0)
1770 invarg("Invalid VRF\n", *argv);
1771 filter.tb = tid;
1772 filter.typemask = ~(1 << RTN_LOCAL | 1<<RTN_BROADCAST);
aba5acdf
SH		 1773 } else if (matches(*argv, "cached") == 0 ||
1774 matches(*argv, "cloned") == 0) {
bd4bcdad 1775 filter.cloned = 1;
aba5acdf
SH		 1776 } else if (strcmp(*argv, "tos") == 0 ||
1777 matches(*argv, "dsfield") == 0) {
1778 __u32 tos;
56f5daac 1779
aba5acdf
SH		 1780 NEXT_ARG();
1781 if (rtnl_dsfield_a2n(&tos, *argv))
1782 invarg("TOS value is invalid\n", *argv);
1783 filter.tos = tos;
1784 filter.tosmask = -1;
1785 } else if (matches(*argv, "protocol") == 0) {
f332d169 1786 __u32 prot = 0;
56f5daac 1787
aba5acdf
SH		 1788 NEXT_ARG();
1789 filter.protocolmask = -1;
1790 if (rtnl_rtprot_a2n(&prot, *argv)) {
1791 if (strcmp(*argv, "all") != 0)
1792 invarg("invalid \"protocol\"\n", *argv);
1793 prot = 0;
1794 filter.protocolmask = 0;
1795 }
1796 filter.protocol = prot;
1797 } else if (matches(*argv, "scope") == 0) {
f332d169 1798 __u32 scope = 0;
56f5daac 1799
aba5acdf
SH		 1800 NEXT_ARG();
1801 filter.scopemask = -1;
1802 if (rtnl_rtscope_a2n(&scope, *argv)) {
1803 if (strcmp(*argv, "all") != 0)
1804 invarg("invalid \"scope\"\n", *argv);
1805 scope = RT_SCOPE_NOWHERE;
1806 filter.scopemask = 0;
1807 }
1808 filter.scope = scope;
1809 } else if (matches(*argv, "type") == 0) {
1810 int type;
56f5daac 1811
aba5acdf 1812 NEXT_ARG();
aba5acdf
SH		 1813 if (rtnl_rtntype_a2n(&type, *argv))
1814 invarg("node type value is invalid\n", *argv);
d84b1878 1815 filter.typemask = (1<<type);
aba5acdf
SH		 1816 } else if (strcmp(*argv, "dev") == 0 ||
1817 strcmp(*argv, "oif") == 0) {
1818 NEXT_ARG();
1819 od = *argv;
1820 } else if (strcmp(*argv, "iif") == 0) {
1821 NEXT_ARG();
1822 id = *argv;
b0373bfb
ED		 1823 } else if (strcmp(*argv, "mark") == 0) {
1824 NEXT_ARG();
7c66d898
PS		 1825 if (get_unsigned(&mark, *argv, 0))
1826 invarg("invalid mark value", *argv);
b0373bfb 1827 filter.markmask = -1;
ed7fdc95 1828 } else if (matches(*argv, "metric") == 0 ||
80d1c528
SH		 1829 matches(*argv, "priority") == 0 ||
1830 strcmp(*argv, "preference") == 0) {
ed7fdc95
AZ		 1831 __u32 metric;
1832
1833 NEXT_ARG();
1834 if (get_u32(&metric, *argv, 0))
1835 invarg("\"metric\" value is invalid\n", *argv);
1836 filter.metric = metric;
1837 filter.metricmask = -1;
aba5acdf 1838 } else if (strcmp(*argv, "via") == 0) {
93ae2835 1839 int family;
56f5daac 1840
aba5acdf 1841 NEXT_ARG();
93ae2835
EB		 1842 family = read_family(*argv);
1843 if (family == AF_UNSPEC)
8d4f35de 1844 family = dump_family;
93ae2835
EB		 1845 else
1846 NEXT_ARG();
1847 get_prefix(&filter.rvia, *argv, family);
aba5acdf
SH		 1848 } else if (strcmp(*argv, "src") == 0) {
1849 NEXT_ARG();
8d4f35de 1850 get_prefix(&filter.rprefsrc, *argv, dump_family);
aba5acdf
SH		 1851 } else if (matches(*argv, "realms") == 0) {
1852 __u32 realm;
56f5daac 1853
aba5acdf 1854 NEXT_ARG();
d583e88e 1855 if (get_rt_realms_or_raw(&realm, *argv))
aba5acdf
SH		 1856 invarg("invalid realms\n", *argv);
1857 filter.realm = realm;
1858 filter.realmmask = ~0U;
1859 if ((filter.realm&0xFFFF) == 0 &&
1860 (*argv)[strlen(*argv) - 1] == '/')
1861 filter.realmmask &= ~0xFFFF;
1862 if ((filter.realm&0xFFFF0000U) == 0 &&
1863 (strchr(*argv, '/') == NULL ||
1864 (*argv)[0] == '/'))
1865 filter.realmmask &= ~0xFFFF0000U;
1866 } else if (matches(*argv, "from") == 0) {
1867 NEXT_ARG();
1868 if (matches(*argv, "root") == 0) {
1869 NEXT_ARG();
8d4f35de 1870 get_prefix(&filter.rsrc, *argv, dump_family);
aba5acdf
SH		 1871 } else if (matches(*argv, "match") == 0) {
1872 NEXT_ARG();
8d4f35de 1873 get_prefix(&filter.msrc, *argv, dump_family);
aba5acdf
SH		 1874 } else {
1875 if (matches(*argv, "exact") == 0) {
1876 NEXT_ARG();
1877 }
8d4f35de 1878 get_prefix(&filter.msrc, *argv, dump_family);
aba5acdf
SH		 1879 filter.rsrc = filter.msrc;
1880 }
1881 } else {
1882 if (matches(*argv, "to") == 0) {
1883 NEXT_ARG();
1884 }
1885 if (matches(*argv, "root") == 0) {
1886 NEXT_ARG();
8d4f35de 1887 get_prefix(&filter.rdst, *argv, dump_family);
aba5acdf
SH		 1888 } else if (matches(*argv, "match") == 0) {
1889 NEXT_ARG();
8d4f35de 1890 get_prefix(&filter.mdst, *argv, dump_family);
aba5acdf
SH		 1891 } else {
1892 if (matches(*argv, "exact") == 0) {
1893 NEXT_ARG();
1894 }
8d4f35de 1895 get_prefix(&filter.mdst, *argv, dump_family);
aba5acdf
SH		 1896 filter.rdst = filter.mdst;
1897 }
1898 }
1899 argc--; argv++;
1900 }
1901
8d4f35de
DA		 1902 if (dump_family == AF_UNSPEC && filter.tb)
1903 dump_family = AF_INET;
aba5acdf 1904
aba5acdf
SH		 1905 if (id || od) {
1906 int idx;
1907
1908 if (id) {
cc560825 1909 idx = ll_name_to_index(id);
fe99adbc
SP		 1910 if (!idx)
1911 return nodev(id);
aba5acdf
SH		 1912 filter.iif = idx;
1913 filter.iifmask = -1;
1914 }
1915 if (od) {
cc560825 1916 idx = ll_name_to_index(od);
fe99adbc
SP		 1917 if (!idx)
1918 return nodev(od);
aba5acdf
SH		 1919 filter.oif = idx;
1920 filter.oifmask = -1;
1921 }
1922 }
b0373bfb 1923 filter.mark = mark;
aba5acdf 1924
432e5f97 1925 if (action == IPROUTE_FLUSH)
8d4f35de 1926 return iproute_flush(dump_family, filter_fn);
aba5acdf 1927
8d4f35de 1928 if (rtnl_routedump_req(&rth, dump_family, iproute_dump_filter) < 0) {
43fd93ae
DA		 1929 perror("Cannot send dump request");
1930 return -2;
aba5acdf
SH		 1931 }
1932
663c3cb2
SH		 1933 new_json_obj(json);
1934
cd70f3f5 1935 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
aba5acdf 1936 fprintf(stderr, "Dump terminated\n");
2f406f2d 1937 return -2;
aba5acdf
SH		 1938 }
1939
663c3cb2
SH		 1940 delete_json_obj();
1941 fflush(stdout);
2f406f2d 1942 return 0;
aba5acdf
SH		 1943}
1944
1945
d1f28cf1 1946static int iproute_get(int argc, char **argv)
aba5acdf 1947{
aba5acdf 1948 struct {
4806867a
SH		 1949 struct nlmsghdr n;
1950 struct rtmsg r;
56f5daac 1951 char buf[1024];
d17b136f
PS		 1952 } req = {
1953 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)),
1954 .n.nlmsg_flags = NLM_F_REQUEST,
1955 .n.nlmsg_type = RTM_GETROUTE,
1956 .r.rtm_family = preferred_family,
1957 };
aba5acdf
SH		 1958 char *idev = NULL;
1959 char *odev = NULL;
86bf43c7 1960 struct nlmsghdr *answer;
aba5acdf 1961 int connected = 0;
aa883d86 1962 int fib_match = 0;
aba5acdf 1963 int from_ok = 0;
b0373bfb 1964 unsigned int mark = 0;
c2f9dc14 1965 bool address_found = false;
aba5acdf 1966
093b7646 1967 iproute_reset_filter(0);
c73f3e02 1968 filter.cloned = 2;
aba5acdf 1969
aba5acdf
SH		 1970 while (argc > 0) {
1971 if (strcmp(*argv, "tos") == 0 ||
1972 matches(*argv, "dsfield") == 0) {
1973 __u32 tos;
56f5daac 1974
aba5acdf
SH		 1975 NEXT_ARG();
1976 if (rtnl_dsfield_a2n(&tos, *argv))
1977 invarg("TOS value is invalid\n", *argv);
1978 req.r.rtm_tos = tos;
1979 } else if (matches(*argv, "from") == 0) {
1980 inet_prefix addr;
56f5daac 1981
aba5acdf
SH		 1982 NEXT_ARG();
1983 if (matches(*argv, "help") == 0)
1984 usage();
1985 from_ok = 1;
1986 get_prefix(&addr, *argv, req.r.rtm_family);
1987 if (req.r.rtm_family == AF_UNSPEC)
1988 req.r.rtm_family = addr.family;
1989 if (addr.bytelen)
21fef525
SH		 1990 addattr_l(&req.n, sizeof(req), RTA_SRC,
1991 &addr.data, addr.bytelen);
aba5acdf
SH		 1992 req.r.rtm_src_len = addr.bitlen;
1993 } else if (matches(*argv, "iif") == 0) {
1994 NEXT_ARG();
1995 idev = *argv;
b0373bfb
ED		 1996 } else if (matches(*argv, "mark") == 0) {
1997 NEXT_ARG();
7c66d898
PS		 1998 if (get_unsigned(&mark, *argv, 0))
1999 invarg("invalid mark value", *argv);
aba5acdf
SH		 2000 } else if (matches(*argv, "oif") == 0 ||
2001 strcmp(*argv, "dev") == 0) {
2002 NEXT_ARG();
2003 odev = *argv;
2004 } else if (matches(*argv, "notify") == 0) {
2005 req.r.rtm_flags |= RTM_F_NOTIFY;
2006 } else if (matches(*argv, "connected") == 0) {
2007 connected = 1;
0130f012
DA		 2008 } else if (matches(*argv, "vrf") == 0) {
2009 NEXT_ARG();
2010 if (!name_is_vrf(*argv))
2011 invarg("Invalid VRF\n", *argv);
2012 odev = *argv;
82252cdc
LC		 2013 } else if (matches(*argv, "uid") == 0) {
2014 uid_t uid;
2015
2016 NEXT_ARG();
2017 if (get_unsigned(&uid, *argv, 0))
2018 invarg("invalid UID\n", *argv);
2019 addattr32(&req.n, sizeof(req), RTA_UID, uid);
aa883d86
RP		 2020 } else if (matches(*argv, "fibmatch") == 0) {
2021 fib_match = 1;
2e86ed54
RP		 2022 } else if (strcmp(*argv, "as") == 0) {
2023 inet_prefix addr;
2024
2025 NEXT_ARG();
2026 if (strcmp(*argv, "to") == 0)
2027 NEXT_ARG();
2028 get_addr(&addr, *argv, req.r.rtm_family);
2029 if (req.r.rtm_family == AF_UNSPEC)
2030 req.r.rtm_family = addr.family;
21fef525
SH		 2031 addattr_l(&req.n, sizeof(req), RTA_NEWDST,
2032 &addr.data, addr.bytelen);
804c7fff
RP		 2033 } else if (matches(*argv, "sport") == 0) {
2034 __be16 sport;
2035
2036 NEXT_ARG();
2037 if (get_be16(&sport, *argv, 0))
2038 invarg("invalid sport\n", *argv);
2039 addattr16(&req.n, sizeof(req), RTA_SPORT, sport);
2040 } else if (matches(*argv, "dport") == 0) {
2041 __be16 dport;
2042
2043 NEXT_ARG();
2044 if (get_be16(&dport, *argv, 0))
2045 invarg("invalid dport\n", *argv);
2046 addattr16(&req.n, sizeof(req), RTA_DPORT, dport);
2047 } else if (matches(*argv, "ipproto") == 0) {
2048 int ipproto;
2049
2050 NEXT_ARG();
2051 ipproto = inet_proto_a2n(*argv);
2052 if (ipproto < 0)
2053 invarg("Invalid \"ipproto\" value\n",
2054 *argv);
2055 addattr8(&req.n, sizeof(req), RTA_IP_PROTO, ipproto);
aba5acdf
SH		 2056 } else {
2057 inet_prefix addr;
56f5daac 2058
aba5acdf
SH		 2059 if (strcmp(*argv, "to") == 0) {
2060 NEXT_ARG();
2061 }
2062 if (matches(*argv, "help") == 0)
2063 usage();
2064 get_prefix(&addr, *argv, req.r.rtm_family);
2065 if (req.r.rtm_family == AF_UNSPEC)
2066 req.r.rtm_family = addr.family;
2067 if (addr.bytelen)
21fef525
SH		 2068 addattr_l(&req.n, sizeof(req),
2069 RTA_DST, &addr.data, addr.bytelen);
aba5acdf 2070 req.r.rtm_dst_len = addr.bitlen;
c2f9dc14 2071 address_found = true;
aba5acdf
SH		 2072 }
2073 argc--; argv++;
2074 }
2075
c2f9dc14 2076 if (!address_found) {
14645ec2 2077 fprintf(stderr, "need at least a destination address\n");
2f406f2d 2078 return -1;
aba5acdf
SH		 2079 }
2080
aba5acdf
SH		 2081 if (idev || odev) {
2082 int idx;
2083
2084 if (idev) {
cc560825 2085 idx = ll_name_to_index(idev);
fe99adbc
SP		 2086 if (!idx)
2087 return nodev(idev);
aba5acdf
SH		 2088 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
2089 }
2090 if (odev) {
cc560825 2091 idx = ll_name_to_index(odev);
fe99adbc
SP		 2092 if (!idx)
2093 return nodev(odev);
aba5acdf
SH		 2094 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
2095 }
2096 }
b0373bfb
ED		 2097 if (mark)
2098 addattr32(&req.n, sizeof(req), RTA_MARK, mark);
aba5acdf
SH		 2099
2100 if (req.r.rtm_family == AF_UNSPEC)
2101 req.r.rtm_family = AF_INET;
2102
8513f4a9
JK		 2103 /* Only IPv4 supports the RTM_F_LOOKUP_TABLE flag */
2104 if (req.r.rtm_family == AF_INET)
2105 req.r.rtm_flags |= RTM_F_LOOKUP_TABLE;
aa883d86
RP		 2106 if (fib_match)
2107 req.r.rtm_flags |= RTM_F_FIB_MATCH;
bc234301 2108
86bf43c7 2109 if (rtnl_talk(&rth, &req.n, &answer) < 0)
8b21cef1 2110 return -2;
aba5acdf 2111
a0a639d9
MC		 2112 new_json_obj(json);
2113
aba5acdf 2114 if (connected && !from_ok) {
86bf43c7
HL		 2115 struct rtmsg *r = NLMSG_DATA(answer);
2116 int len = answer->nlmsg_len;
56f5daac 2117 struct rtattr *tb[RTA_MAX+1];
aba5acdf 2118
cd554f2c 2119 if (print_route(answer, (void *)stdout) < 0) {
aba5acdf 2120 fprintf(stderr, "An error :-)\n");
86bf43c7 2121 free(answer);
8be29558 2122 return -1;
aba5acdf
SH		 2123 }
2124
86bf43c7 2125 if (answer->nlmsg_type != RTM_NEWROUTE) {
aba5acdf 2126 fprintf(stderr, "Not a route?\n");
86bf43c7 2127 free(answer);
aba5acdf
SH		 2128 return -1;
2129 }
2130 len -= NLMSG_LENGTH(sizeof(*r));
2131 if (len < 0) {
2132 fprintf(stderr, "Wrong len %d\n", len);
86bf43c7 2133 free(answer);
aba5acdf
SH		 2134 return -1;
2135 }
2136
aba5acdf
SH		 2137 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
2138
2139 if (tb[RTA_PREFSRC]) {
2140 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
2141 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
2142 } else if (!tb[RTA_SRC]) {
2143 fprintf(stderr, "Failed to connect the route\n");
86bf43c7 2144 free(answer);
aba5acdf
SH		 2145 return -1;
2146 }
2147 if (!odev && tb[RTA_OIF])
2148 tb[RTA_OIF]->rta_type = 0;
2149 if (tb[RTA_GATEWAY])
2150 tb[RTA_GATEWAY]->rta_type = 0;
93ae2835
EB		 2151 if (tb[RTA_VIA])
2152 tb[RTA_VIA]->rta_type = 0;
aba5acdf
SH		 2153 if (!idev && tb[RTA_IIF])
2154 tb[RTA_IIF]->rta_type = 0;
2155 req.n.nlmsg_flags = NLM_F_REQUEST;
2156 req.n.nlmsg_type = RTM_GETROUTE;
2157
a0a639d9 2158 delete_json_obj();
86bf43c7
HL		 2159 free(answer);
2160 if (rtnl_talk(&rth, &req.n, &answer) < 0)
56d8ff0a 2161 return -2;
aba5acdf
SH		 2162 }
2163
cd554f2c 2164 if (print_route(answer, (void *)stdout) < 0) {
aba5acdf 2165 fprintf(stderr, "An error :-)\n");
86bf43c7 2166 free(answer);
56d8ff0a 2167 return -1;
aba5acdf
SH		 2168 }
2169
a0a639d9 2170 delete_json_obj();
86bf43c7 2171 free(answer);
56d8ff0a 2172 return 0;
aba5acdf
SH		 2173}
2174
79f4a393 2175static int rtattr_cmp(const struct rtattr *rta1, const struct rtattr *rta2)
74af8dd9
XL		 2176{
2177 if (!rta1 || !rta2 || rta1->rta_len != rta2->rta_len)
2178 return 1;
2179
2180 return memcmp(RTA_DATA(rta1), RTA_DATA(rta2), RTA_PAYLOAD(rta1));
2181}
2182
cd554f2c 2183static int restore_handler(struct rtnl_ctrl_data *ctrl,
0628cddd 2184 struct nlmsghdr *n, void *arg)
f4ff11e3 2185{
74af8dd9
XL		 2186 struct rtmsg *r = NLMSG_DATA(n);
2187 struct rtattr *tb[RTA_MAX+1];
2188 int len = n->nlmsg_len - NLMSG_LENGTH(sizeof(*r));
2189 int ret, prio = *(int *)arg;
2190
2191 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
f4ff11e3 2192
74af8dd9
XL		 2193 /* Restore routes in correct order:
2194 * 0. ones for local addresses,
2195 * 1. ones for local networks,
2196 * 2. others (remote networks/hosts).
2197 */
2198 if (!prio && !tb[RTA_GATEWAY] && (!tb[RTA_PREFSRC] ||
2199 !rtattr_cmp(tb[RTA_PREFSRC], tb[RTA_DST])))
2200 goto restore;
c85703bb 2201 else if (prio == 1 && !tb[RTA_GATEWAY] && tb[RTA_PREFSRC] &&
74af8dd9
XL		 2202 rtattr_cmp(tb[RTA_PREFSRC], tb[RTA_DST]))
2203 goto restore;
2204 else if (prio == 2 && tb[RTA_GATEWAY])
2205 goto restore;
2206
2207 return 0;
2208
2209restore:
f4ff11e3
DS		 2210 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
2211
2212 ll_init_map(&rth);
2213
86bf43c7 2214 ret = rtnl_talk(&rth, n, NULL);
f4ff11e3
DS		 2215 if ((ret < 0) && (errno == EEXIST))
2216 ret = 0;
2217
2218 return ret;
2219}
2220
76c61b34
PE		 2221static int route_dump_check_magic(void)
2222{
2223 int ret;
2224 __u32 magic = 0;
2225
2226 if (isatty(STDIN_FILENO)) {
2227 fprintf(stderr, "Can't restore route dump from a terminal\n");
2228 return -1;
2229 }
2230
2231 ret = fread(&magic, sizeof(magic), 1, stdin);
2232 if (magic != route_dump_magic) {
2233 fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic);
2234 return -1;
2235 }
2236
2237 return 0;
2238}
2239
d1f28cf1 2240static int iproute_restore(void)
f4ff11e3 2241{
74af8dd9
XL		 2242 int pos, prio;
2243
76c61b34 2244 if (route_dump_check_magic())
2f406f2d 2245 return -1;
76c61b34 2246
74af8dd9 2247 pos = ftell(stdin);
bffb68b6
HL		 2248 if (pos == -1) {
2249 perror("Failed to restore: ftell");
2f406f2d 2250 return -1;
bffb68b6
HL		 2251 }
2252
74af8dd9
XL		 2253 for (prio = 0; prio < 3; prio++) {
2254 int err;
2255
2256 err = rtnl_from_file(stdin, &restore_handler, &prio);
2257 if (err)
2f406f2d 2258 return -2;
74af8dd9 2259
bffb68b6
HL		 2260 if (fseek(stdin, pos, SEEK_SET) == -1) {
2261 perror("Failed to restore: fseek");
2f406f2d 2262 return -1;
bffb68b6 2263 }
74af8dd9
XL		 2264 }
2265
2f406f2d 2266 return 0;
f4ff11e3
DS		 2267}
2268
cd554f2c 2269static int show_handler(struct rtnl_ctrl_data *ctrl,
0628cddd 2270 struct nlmsghdr *n, void *arg)
93b79863 2271{
cd554f2c 2272 print_route(n, stdout);
93b79863
PE		 2273 return 0;
2274}
2275
2276static int iproute_showdump(void)
2277{
2278 if (route_dump_check_magic())
2f406f2d 2279 return -1;
93b79863 2280
2f406f2d
ÉB		 2281 if (rtnl_from_file(stdin, &show_handler, NULL))
2282 return -2;
2283
2284 return 0;
93b79863
PE		 2285}
2286
093b7646 2287void iproute_reset_filter(int ifindex)
aba5acdf
SH		 2288{
2289 memset(&filter, 0, sizeof(filter));
2290 filter.mdst.bitlen = -1;
2291 filter.msrc.bitlen = -1;
093b7646 2292 filter.oif = ifindex;
2293 if (filter.oif > 0)
2294 filter.oifmask = -1;
aba5acdf
SH		 2295}
2296
2297int do_iproute(int argc, char **argv)
2298{
2299 if (argc < 1)
f4ff11e3 2300 return iproute_list_flush_or_save(0, NULL, IPROUTE_LIST);
ae665a52 2301
aba5acdf
SH		 2302 if (matches(*argv, "add") == 0)
2303 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
2304 argc-1, argv+1);
2305 if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
2306 return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
2307 argc-1, argv+1);
2308 if (matches(*argv, "replace") == 0)
2309 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
2310 argc-1, argv+1);
2311 if (matches(*argv, "prepend") == 0)
2312 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
2313 argc-1, argv+1);
2314 if (matches(*argv, "append") == 0)
2315 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
2316 argc-1, argv+1);
2317 if (matches(*argv, "test") == 0)
2318 return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
2319 argc-1, argv+1);
2320 if (matches(*argv, "delete") == 0)
2321 return iproute_modify(RTM_DELROUTE, 0,
2322 argc-1, argv+1);
2323 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
2324 || matches(*argv, "lst") == 0)
f4ff11e3 2325 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_LIST);
aba5acdf
SH		 2326 if (matches(*argv, "get") == 0)
2327 return iproute_get(argc-1, argv+1);
2328 if (matches(*argv, "flush") == 0)
f4ff11e3
DS		 2329 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_FLUSH);
2330 if (matches(*argv, "save") == 0)
2331 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_SAVE);
2332 if (matches(*argv, "restore") == 0)
2333 return iproute_restore();
93b79863
PE		 2334 if (matches(*argv, "showdump") == 0)
2335 return iproute_showdump();
aba5acdf
SH		 2336 if (matches(*argv, "help") == 0)
2337 usage();
80d1c528
SH		 2338
2339 fprintf(stderr,
2340 "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
aba5acdf
SH		 2341 exit(-1);
2342}
Upstream mirror of iproute2