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Commit | Line | Data |
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718e3744 | 1 | /* BGP nexthop scan |
896014f4 DL |
2 | * Copyright (C) 2000 Kunihiro Ishiguro |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
718e3744 | 20 | |
21 | #include <zebra.h> | |
22 | ||
23 | #include "command.h" | |
24 | #include "thread.h" | |
25 | #include "prefix.h" | |
26 | #include "zclient.h" | |
27 | #include "stream.h" | |
28 | #include "network.h" | |
29 | #include "log.h" | |
30 | #include "memory.h" | |
10f9bf3f JBD |
31 | #include "hash.h" |
32 | #include "jhash.h" | |
fb018d25 | 33 | #include "nexthop.h" |
3f9c7369 | 34 | #include "queue.h" |
039f3a34 | 35 | #include "filter.h" |
718e3744 | 36 | |
37 | #include "bgpd/bgpd.h" | |
38 | #include "bgpd/bgp_table.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_attr.h" | |
41 | #include "bgpd/bgp_nexthop.h" | |
fb018d25 | 42 | #include "bgpd/bgp_nht.h" |
718e3744 | 43 | #include "bgpd/bgp_debug.h" |
44 | #include "bgpd/bgp_damp.h" | |
8ffedcea | 45 | #include "bgpd/bgp_fsm.h" |
8386ac43 | 46 | #include "bgpd/bgp_vty.h" |
718e3744 | 47 | #include "zebra/rib.h" |
d62a17ae | 48 | #include "zebra/zserv.h" /* For ZEBRA_SERV_PATH. */ |
718e3744 | 49 | |
d62a17ae | 50 | char *bnc_str(struct bgp_nexthop_cache *bnc, char *buf, int size) |
fb018d25 | 51 | { |
d62a17ae | 52 | prefix2str(&(bnc->node->p), buf, size); |
53 | return buf; | |
fb018d25 DS |
54 | } |
55 | ||
d62a17ae | 56 | void bnc_nexthop_free(struct bgp_nexthop_cache *bnc) |
718e3744 | 57 | { |
d62a17ae | 58 | nexthops_free(bnc->nexthop); |
718e3744 | 59 | } |
60 | ||
d62a17ae | 61 | struct bgp_nexthop_cache *bnc_new(void) |
718e3744 | 62 | { |
d62a17ae | 63 | struct bgp_nexthop_cache *bnc; |
fb018d25 | 64 | |
d62a17ae | 65 | bnc = XCALLOC(MTYPE_BGP_NEXTHOP_CACHE, |
66 | sizeof(struct bgp_nexthop_cache)); | |
67 | LIST_INIT(&(bnc->paths)); | |
68 | return bnc; | |
718e3744 | 69 | } |
70 | ||
d62a17ae | 71 | void bnc_free(struct bgp_nexthop_cache *bnc) |
718e3744 | 72 | { |
d62a17ae | 73 | bnc_nexthop_free(bnc); |
74 | XFREE(MTYPE_BGP_NEXTHOP_CACHE, bnc); | |
718e3744 | 75 | } |
6b0655a2 | 76 | |
718e3744 | 77 | /* Reset and free all BGP nexthop cache. */ |
d62a17ae | 78 | static void bgp_nexthop_cache_reset(struct bgp_table *table) |
718e3744 | 79 | { |
d62a17ae | 80 | struct bgp_node *rn; |
81 | struct bgp_nexthop_cache *bnc; | |
82 | ||
83 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) | |
84 | if ((bnc = rn->info) != NULL) { | |
85 | bnc_free(bnc); | |
86 | rn->info = NULL; | |
87 | bgp_unlock_node(rn); | |
88 | } | |
718e3744 | 89 | } |
90 | ||
db0e1937 MK |
91 | static void *bgp_tip_hash_alloc(void *p) |
92 | { | |
0291c246 MK |
93 | const struct in_addr *val = (const struct in_addr *)p; |
94 | struct tip_addr *addr; | |
db0e1937 MK |
95 | |
96 | addr = XMALLOC(MTYPE_TIP_ADDR, sizeof(struct tip_addr)); | |
97 | addr->refcnt = 0; | |
98 | addr->addr.s_addr = val->s_addr; | |
99 | ||
100 | return addr; | |
101 | } | |
102 | ||
103 | static void bgp_tip_hash_free(void *addr) | |
104 | { | |
105 | XFREE(MTYPE_TIP_ADDR, addr); | |
106 | } | |
107 | ||
108 | static unsigned int bgp_tip_hash_key_make(void *p) | |
109 | { | |
0291c246 | 110 | const struct tip_addr *addr = p; |
db0e1937 MK |
111 | |
112 | return jhash_1word(addr->addr.s_addr, 0); | |
113 | } | |
114 | ||
115 | static int bgp_tip_hash_cmp(const void *p1, const void *p2) | |
116 | { | |
0291c246 MK |
117 | const struct tip_addr *addr1 = p1; |
118 | const struct tip_addr *addr2 = p2; | |
db0e1937 MK |
119 | |
120 | return addr1->addr.s_addr == addr2->addr.s_addr; | |
121 | } | |
122 | ||
123 | void bgp_tip_hash_init(struct bgp *bgp) | |
124 | { | |
996c9314 | 125 | bgp->tip_hash = hash_create(bgp_tip_hash_key_make, bgp_tip_hash_cmp, |
3f65c5b1 | 126 | "BGP TIP hash"); |
db0e1937 MK |
127 | } |
128 | ||
129 | void bgp_tip_hash_destroy(struct bgp *bgp) | |
130 | { | |
131 | if (bgp->tip_hash == NULL) | |
132 | return; | |
133 | hash_clean(bgp->tip_hash, bgp_tip_hash_free); | |
134 | hash_free(bgp->tip_hash); | |
135 | bgp->tip_hash = NULL; | |
136 | } | |
137 | ||
138 | void bgp_tip_add(struct bgp *bgp, struct in_addr *tip) | |
139 | { | |
0291c246 MK |
140 | struct tip_addr tmp; |
141 | struct tip_addr *addr; | |
db0e1937 MK |
142 | |
143 | tmp.addr = *tip; | |
144 | ||
145 | addr = hash_get(bgp->tip_hash, &tmp, bgp_tip_hash_alloc); | |
146 | if (!addr) | |
147 | return; | |
148 | ||
149 | addr->refcnt++; | |
150 | } | |
151 | ||
152 | void bgp_tip_del(struct bgp *bgp, struct in_addr *tip) | |
153 | { | |
0291c246 MK |
154 | struct tip_addr tmp; |
155 | struct tip_addr *addr; | |
db0e1937 MK |
156 | |
157 | tmp.addr = *tip; | |
158 | ||
159 | addr = hash_lookup(bgp->tip_hash, &tmp); | |
160 | /* may have been deleted earlier by bgp_interface_down() */ | |
161 | if (addr == NULL) | |
162 | return; | |
163 | ||
164 | addr->refcnt--; | |
165 | ||
166 | if (addr->refcnt == 0) { | |
167 | hash_release(bgp->tip_hash, addr); | |
168 | XFREE(MTYPE_TIP_ADDR, addr); | |
169 | } | |
170 | } | |
10f9bf3f | 171 | |
d62a17ae | 172 | static void *bgp_address_hash_alloc(void *p) |
10f9bf3f | 173 | { |
d62a17ae | 174 | const struct in_addr *val = (const struct in_addr *)p; |
175 | struct bgp_addr *addr; | |
10f9bf3f | 176 | |
d62a17ae | 177 | addr = XMALLOC(MTYPE_BGP_ADDR, sizeof(struct bgp_addr)); |
178 | addr->refcnt = 0; | |
179 | addr->addr.s_addr = val->s_addr; | |
10f9bf3f | 180 | |
d62a17ae | 181 | return addr; |
10f9bf3f JBD |
182 | } |
183 | ||
d62a17ae | 184 | static void bgp_address_hash_free(void *addr) |
37d361e7 | 185 | { |
d62a17ae | 186 | XFREE(MTYPE_BGP_ADDR, addr); |
37d361e7 RW |
187 | } |
188 | ||
d62a17ae | 189 | static unsigned int bgp_address_hash_key_make(void *p) |
10f9bf3f | 190 | { |
d62a17ae | 191 | const struct bgp_addr *addr = p; |
10f9bf3f | 192 | |
d62a17ae | 193 | return jhash_1word(addr->addr.s_addr, 0); |
10f9bf3f JBD |
194 | } |
195 | ||
d62a17ae | 196 | static int bgp_address_hash_cmp(const void *p1, const void *p2) |
10f9bf3f | 197 | { |
d62a17ae | 198 | const struct bgp_addr *addr1 = p1; |
199 | const struct bgp_addr *addr2 = p2; | |
10f9bf3f | 200 | |
d62a17ae | 201 | return addr1->addr.s_addr == addr2->addr.s_addr; |
10f9bf3f JBD |
202 | } |
203 | ||
d62a17ae | 204 | void bgp_address_init(struct bgp *bgp) |
10f9bf3f | 205 | { |
996c9314 LB |
206 | bgp->address_hash = |
207 | hash_create(bgp_address_hash_key_make, bgp_address_hash_cmp, | |
208 | "BGP Address Hash"); | |
10f9bf3f JBD |
209 | } |
210 | ||
d62a17ae | 211 | void bgp_address_destroy(struct bgp *bgp) |
bb86c601 | 212 | { |
d62a17ae | 213 | if (bgp->address_hash == NULL) |
214 | return; | |
215 | hash_clean(bgp->address_hash, bgp_address_hash_free); | |
216 | hash_free(bgp->address_hash); | |
217 | bgp->address_hash = NULL; | |
bb86c601 LB |
218 | } |
219 | ||
d62a17ae | 220 | static void bgp_address_add(struct bgp *bgp, struct prefix *p) |
10f9bf3f | 221 | { |
d62a17ae | 222 | struct bgp_addr tmp; |
223 | struct bgp_addr *addr; | |
10f9bf3f | 224 | |
d62a17ae | 225 | tmp.addr = p->u.prefix4; |
10f9bf3f | 226 | |
d62a17ae | 227 | addr = hash_get(bgp->address_hash, &tmp, bgp_address_hash_alloc); |
228 | if (!addr) | |
229 | return; | |
5ce10e92 | 230 | |
d62a17ae | 231 | addr->refcnt++; |
10f9bf3f JBD |
232 | } |
233 | ||
d62a17ae | 234 | static void bgp_address_del(struct bgp *bgp, struct prefix *p) |
10f9bf3f | 235 | { |
d62a17ae | 236 | struct bgp_addr tmp; |
237 | struct bgp_addr *addr; | |
10f9bf3f | 238 | |
d62a17ae | 239 | tmp.addr = p->u.prefix4; |
10f9bf3f | 240 | |
d62a17ae | 241 | addr = hash_lookup(bgp->address_hash, &tmp); |
242 | /* may have been deleted earlier by bgp_interface_down() */ | |
243 | if (addr == NULL) | |
244 | return; | |
9e47abd8 | 245 | |
d62a17ae | 246 | addr->refcnt--; |
10f9bf3f | 247 | |
d62a17ae | 248 | if (addr->refcnt == 0) { |
249 | hash_release(bgp->address_hash, addr); | |
250 | XFREE(MTYPE_BGP_ADDR, addr); | |
251 | } | |
10f9bf3f JBD |
252 | } |
253 | ||
6b0655a2 | 254 | |
d62a17ae | 255 | struct bgp_connected_ref { |
256 | unsigned int refcnt; | |
718e3744 | 257 | }; |
258 | ||
d62a17ae | 259 | void bgp_connected_add(struct bgp *bgp, struct connected *ifc) |
718e3744 | 260 | { |
d62a17ae | 261 | struct prefix p; |
262 | struct prefix *addr; | |
263 | struct bgp_node *rn; | |
264 | struct bgp_connected_ref *bc; | |
265 | struct listnode *node, *nnode; | |
266 | struct peer *peer; | |
267 | ||
268 | addr = ifc->address; | |
269 | ||
270 | p = *(CONNECTED_PREFIX(ifc)); | |
271 | if (addr->family == AF_INET) { | |
272 | apply_mask_ipv4((struct prefix_ipv4 *)&p); | |
273 | ||
274 | if (prefix_ipv4_any((struct prefix_ipv4 *)&p)) | |
275 | return; | |
276 | ||
277 | bgp_address_add(bgp, addr); | |
278 | ||
279 | rn = bgp_node_get(bgp->connected_table[AFI_IP], | |
280 | (struct prefix *)&p); | |
281 | if (rn->info) { | |
282 | bc = rn->info; | |
283 | bc->refcnt++; | |
284 | } else { | |
285 | bc = XCALLOC(MTYPE_BGP_CONN, | |
286 | sizeof(struct bgp_connected_ref)); | |
287 | bc->refcnt = 1; | |
288 | rn->info = bc; | |
289 | } | |
8ffedcea | 290 | |
d62a17ae | 291 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { |
292 | if (peer->conf_if | |
293 | && (strcmp(peer->conf_if, ifc->ifp->name) == 0) | |
294 | && peer->status != Established | |
295 | && !CHECK_FLAG(peer->flags, | |
296 | PEER_FLAG_IFPEER_V6ONLY)) { | |
297 | if (peer_active(peer)) | |
298 | BGP_EVENT_ADD(peer, BGP_Stop); | |
299 | BGP_EVENT_ADD(peer, BGP_Start); | |
300 | } | |
301 | } | |
302 | } else if (addr->family == AF_INET6) { | |
303 | apply_mask_ipv6((struct prefix_ipv6 *)&p); | |
304 | ||
305 | if (IN6_IS_ADDR_UNSPECIFIED(&p.u.prefix6)) | |
306 | return; | |
307 | ||
308 | if (IN6_IS_ADDR_LINKLOCAL(&p.u.prefix6)) | |
309 | return; | |
310 | ||
311 | rn = bgp_node_get(bgp->connected_table[AFI_IP6], | |
312 | (struct prefix *)&p); | |
313 | if (rn->info) { | |
314 | bc = rn->info; | |
315 | bc->refcnt++; | |
316 | } else { | |
317 | bc = XCALLOC(MTYPE_BGP_CONN, | |
318 | sizeof(struct bgp_connected_ref)); | |
319 | bc->refcnt = 1; | |
320 | rn->info = bc; | |
321 | } | |
718e3744 | 322 | } |
718e3744 | 323 | } |
324 | ||
d62a17ae | 325 | void bgp_connected_delete(struct bgp *bgp, struct connected *ifc) |
718e3744 | 326 | { |
d62a17ae | 327 | struct prefix p; |
328 | struct prefix *addr; | |
f6bdc080 | 329 | struct bgp_node *rn = NULL; |
d62a17ae | 330 | struct bgp_connected_ref *bc; |
718e3744 | 331 | |
d62a17ae | 332 | addr = ifc->address; |
718e3744 | 333 | |
d62a17ae | 334 | p = *(CONNECTED_PREFIX(ifc)); |
f6bdc080 | 335 | apply_mask(&p); |
d62a17ae | 336 | if (addr->family == AF_INET) { |
d62a17ae | 337 | if (prefix_ipv4_any((struct prefix_ipv4 *)&p)) |
338 | return; | |
718e3744 | 339 | |
d62a17ae | 340 | bgp_address_del(bgp, addr); |
10f9bf3f | 341 | |
d62a17ae | 342 | rn = bgp_node_lookup(bgp->connected_table[AFI_IP], &p); |
d62a17ae | 343 | } else if (addr->family == AF_INET6) { |
d62a17ae | 344 | if (IN6_IS_ADDR_UNSPECIFIED(&p.u.prefix6)) |
345 | return; | |
346 | ||
347 | if (IN6_IS_ADDR_LINKLOCAL(&p.u.prefix6)) | |
348 | return; | |
349 | ||
350 | rn = bgp_node_lookup(bgp->connected_table[AFI_IP6], | |
351 | (struct prefix *)&p); | |
f6bdc080 | 352 | } |
d62a17ae | 353 | |
f6bdc080 DS |
354 | if (!rn) |
355 | return; | |
356 | ||
357 | bc = rn->info; | |
358 | bc->refcnt--; | |
359 | if (bc->refcnt == 0) { | |
360 | XFREE(MTYPE_BGP_CONN, bc); | |
361 | rn->info = NULL; | |
718e3744 | 362 | } |
f6bdc080 DS |
363 | bgp_unlock_node(rn); |
364 | bgp_unlock_node(rn); | |
718e3744 | 365 | } |
366 | ||
3292693b DS |
367 | static void bgp_connected_cleanup(struct route_table *table, |
368 | struct route_node *rn) | |
369 | { | |
370 | struct bgp_connected_ref *bc; | |
371 | ||
372 | bc = rn->info; | |
373 | if (!bc) | |
374 | return; | |
375 | ||
376 | bc->refcnt--; | |
377 | if (bc->refcnt == 0) { | |
378 | XFREE(MTYPE_BGP_CONN, bc); | |
379 | rn->info = NULL; | |
380 | } | |
381 | } | |
382 | ||
d62a17ae | 383 | int bgp_nexthop_self(struct bgp *bgp, struct in_addr nh_addr) |
718e3744 | 384 | { |
d62a17ae | 385 | struct bgp_addr tmp, *addr; |
db0e1937 | 386 | struct tip_addr tmp_tip, *tip; |
718e3744 | 387 | |
d62a17ae | 388 | tmp.addr = nh_addr; |
10f9bf3f | 389 | |
d62a17ae | 390 | addr = hash_lookup(bgp->address_hash, &tmp); |
391 | if (addr) | |
392 | return 1; | |
718e3744 | 393 | |
db0e1937 MK |
394 | tmp_tip.addr = nh_addr; |
395 | tip = hash_lookup(bgp->tip_hash, &tmp_tip); | |
396 | if (tip) | |
397 | return 1; | |
398 | ||
d62a17ae | 399 | return 0; |
718e3744 | 400 | } |
6b0655a2 | 401 | |
d62a17ae | 402 | int bgp_multiaccess_check_v4(struct in_addr nexthop, struct peer *peer) |
718e3744 | 403 | { |
d62a17ae | 404 | struct bgp_node *rn1; |
405 | struct bgp_node *rn2; | |
406 | struct prefix p; | |
407 | int ret; | |
408 | ||
409 | p.family = AF_INET; | |
410 | p.prefixlen = IPV4_MAX_BITLEN; | |
411 | p.u.prefix4 = nexthop; | |
412 | ||
413 | rn1 = bgp_node_match(peer->bgp->connected_table[AFI_IP], &p); | |
414 | if (!rn1) | |
415 | return 0; | |
416 | ||
417 | p.family = AF_INET; | |
418 | p.prefixlen = IPV4_MAX_BITLEN; | |
419 | p.u.prefix4 = peer->su.sin.sin_addr; | |
420 | ||
421 | rn2 = bgp_node_match(peer->bgp->connected_table[AFI_IP], &p); | |
422 | if (!rn2) { | |
423 | bgp_unlock_node(rn1); | |
424 | return 0; | |
425 | } | |
718e3744 | 426 | |
d62a17ae | 427 | ret = (rn1 == rn2) ? 1 : 0; |
718e3744 | 428 | |
d62a17ae | 429 | bgp_unlock_node(rn1); |
430 | bgp_unlock_node(rn2); | |
718e3744 | 431 | |
d62a17ae | 432 | return (ret); |
718e3744 | 433 | } |
434 | ||
65d4e0c6 DS |
435 | int bgp_subgrp_multiaccess_check_v4(struct in_addr nexthop, |
436 | struct update_subgroup *subgrp) | |
437 | { | |
438 | struct bgp_node *rn1, *rn2; | |
439 | struct peer_af *paf; | |
440 | struct prefix p, np; | |
a2b6e694 | 441 | struct bgp *bgp; |
65d4e0c6 DS |
442 | |
443 | np.family = AF_INET; | |
444 | np.prefixlen = IPV4_MAX_BITLEN; | |
445 | np.u.prefix4 = nexthop; | |
446 | ||
447 | p.family = AF_INET; | |
448 | p.prefixlen = IPV4_MAX_BITLEN; | |
449 | ||
65d4e0c6 | 450 | bgp = SUBGRP_INST(subgrp); |
996c9314 | 451 | rn1 = bgp_node_match(bgp->connected_table[AFI_IP], &np); |
65d4e0c6 DS |
452 | if (!rn1) |
453 | return 0; | |
454 | ||
996c9314 | 455 | SUBGRP_FOREACH_PEER (subgrp, paf) { |
65d4e0c6 DS |
456 | p.u.prefix4 = paf->peer->su.sin.sin_addr; |
457 | ||
996c9314 | 458 | rn2 = bgp_node_match(bgp->connected_table[AFI_IP], &p); |
65d4e0c6 DS |
459 | if (rn1 == rn2) { |
460 | bgp_unlock_node(rn1); | |
461 | bgp_unlock_node(rn2); | |
462 | return 1; | |
463 | } | |
464 | ||
465 | if (rn2) | |
466 | bgp_unlock_node(rn2); | |
467 | } | |
468 | ||
469 | bgp_unlock_node(rn1); | |
470 | return 0; | |
471 | } | |
472 | ||
996c9314 | 473 | static void bgp_show_nexthops_detail(struct vty *vty, struct bgp *bgp, |
e22ac3ee DS |
474 | struct bgp_nexthop_cache *bnc) |
475 | { | |
476 | char buf[PREFIX2STR_BUFFER]; | |
477 | struct nexthop *nexthop; | |
478 | ||
479 | for (nexthop = bnc->nexthop; nexthop; nexthop = nexthop->next) | |
480 | switch (nexthop->type) { | |
481 | case NEXTHOP_TYPE_IPV6: | |
482 | vty_out(vty, " gate %s\n", | |
996c9314 LB |
483 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, |
484 | sizeof(buf))); | |
e22ac3ee DS |
485 | break; |
486 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
487 | vty_out(vty, " gate %s, if %s\n", | |
996c9314 LB |
488 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, |
489 | sizeof(buf)), | |
490 | ifindex2ifname(nexthop->ifindex, bgp->vrf_id)); | |
e22ac3ee DS |
491 | break; |
492 | case NEXTHOP_TYPE_IPV4: | |
493 | vty_out(vty, " gate %s\n", | |
996c9314 LB |
494 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, |
495 | sizeof(buf))); | |
e22ac3ee DS |
496 | break; |
497 | case NEXTHOP_TYPE_IFINDEX: | |
498 | vty_out(vty, " if %s\n", | |
996c9314 | 499 | ifindex2ifname(nexthop->ifindex, bgp->vrf_id)); |
e22ac3ee DS |
500 | break; |
501 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
502 | vty_out(vty, " gate %s, if %s\n", | |
996c9314 LB |
503 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, |
504 | sizeof(buf)), | |
505 | ifindex2ifname(nexthop->ifindex, bgp->vrf_id)); | |
e22ac3ee DS |
506 | break; |
507 | case NEXTHOP_TYPE_BLACKHOLE: | |
508 | vty_out(vty, " blackhole\n"); | |
509 | break; | |
510 | default: | |
996c9314 | 511 | vty_out(vty, " invalid nexthop type %u\n", |
e22ac3ee DS |
512 | nexthop->type); |
513 | } | |
514 | } | |
515 | ||
d62a17ae | 516 | static void bgp_show_nexthops(struct vty *vty, struct bgp *bgp, int detail) |
fb018d25 | 517 | { |
d62a17ae | 518 | struct bgp_node *rn; |
519 | struct bgp_nexthop_cache *bnc; | |
520 | char buf[PREFIX2STR_BUFFER]; | |
d62a17ae | 521 | time_t tbuf; |
522 | afi_t afi; | |
523 | ||
524 | vty_out(vty, "Current BGP nexthop cache:\n"); | |
525 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
526 | if (!bgp->nexthop_cache_table[afi]) | |
527 | continue; | |
528 | ||
529 | for (rn = bgp_table_top(bgp->nexthop_cache_table[afi]); rn; | |
530 | rn = bgp_route_next(rn)) { | |
531 | if ((bnc = rn->info) != NULL) { | |
532 | if (CHECK_FLAG(bnc->flags, BGP_NEXTHOP_VALID)) { | |
533 | vty_out(vty, | |
534 | " %s valid [IGP metric %d], #paths %d\n", | |
535 | inet_ntop(rn->p.family, | |
536 | &rn->p.u.prefix, buf, | |
537 | sizeof(buf)), | |
538 | bnc->metric, bnc->path_count); | |
e22ac3ee DS |
539 | |
540 | if (!detail) | |
541 | continue; | |
542 | ||
543 | bgp_show_nexthops_detail(vty, bgp, bnc); | |
544 | ||
996c9314 | 545 | } else { |
d62a17ae | 546 | vty_out(vty, " %s invalid\n", |
547 | inet_ntop(rn->p.family, | |
548 | &rn->p.u.prefix, buf, | |
549 | sizeof(buf))); | |
550 | if (CHECK_FLAG(bnc->flags, | |
551 | BGP_NEXTHOP_CONNECTED)) | |
552 | vty_out(vty, | |
553 | " Must be Connected\n"); | |
554 | } | |
555 | tbuf = time(NULL) | |
556 | - (bgp_clock() - bnc->last_update); | |
557 | vty_out(vty, " Last update: %s", ctime(&tbuf)); | |
558 | vty_out(vty, "\n"); | |
da11a696 DS |
559 | } |
560 | } | |
fb018d25 | 561 | } |
f186de26 | 562 | } |
563 | ||
d62a17ae | 564 | static int show_ip_bgp_nexthop_table(struct vty *vty, const char *name, |
565 | int detail) | |
f186de26 | 566 | { |
d62a17ae | 567 | struct bgp *bgp; |
568 | ||
569 | if (name) | |
570 | bgp = bgp_lookup_by_name(name); | |
571 | else | |
572 | bgp = bgp_get_default(); | |
573 | if (!bgp) { | |
574 | vty_out(vty, "%% No such BGP instance exist\n"); | |
575 | return CMD_WARNING; | |
576 | } | |
f186de26 | 577 | |
d62a17ae | 578 | bgp_show_nexthops(vty, bgp, detail); |
f186de26 | 579 | |
d62a17ae | 580 | return CMD_SUCCESS; |
fb018d25 DS |
581 | } |
582 | ||
d62a17ae | 583 | static void bgp_show_all_instances_nexthops_vty(struct vty *vty) |
f186de26 | 584 | { |
d62a17ae | 585 | struct listnode *node, *nnode; |
586 | struct bgp *bgp; | |
587 | ||
588 | for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) { | |
589 | vty_out(vty, "\nInstance %s:\n", | |
590 | (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
591 | ? "Default" | |
592 | : bgp->name); | |
593 | bgp_show_nexthops(vty, bgp, 0); | |
594 | } | |
f186de26 | 595 | } |
596 | ||
fb018d25 DS |
597 | DEFUN (show_ip_bgp_nexthop, |
598 | show_ip_bgp_nexthop_cmd, | |
18c57037 | 599 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] nexthop [detail]", |
50ef26d4 | 600 | SHOW_STR |
601 | IP_STR | |
602 | BGP_STR | |
8386ac43 | 603 | BGP_INSTANCE_HELP_STR |
3a2d747c QY |
604 | "BGP nexthop table\n" |
605 | "Show detailed information\n") | |
50ef26d4 | 606 | { |
d62a17ae | 607 | int idx = 0; |
b7ada628 DS |
608 | char *vrf = NULL; |
609 | ||
610 | if (argv_find(argv, argc, "view", &idx) | |
611 | || argv_find(argv, argc, "vrf", &idx)) | |
612 | vrf = argv[++idx]->arg; | |
d62a17ae | 613 | int detail = argv_find(argv, argc, "detail", &idx) ? 1 : 0; |
614 | return show_ip_bgp_nexthop_table(vty, vrf, detail); | |
50ef26d4 | 615 | } |
616 | ||
f186de26 | 617 | DEFUN (show_ip_bgp_instance_all_nexthop, |
618 | show_ip_bgp_instance_all_nexthop_cmd, | |
bec37ba5 | 619 | "show [ip] bgp <view|vrf> all nexthop", |
f186de26 | 620 | SHOW_STR |
621 | IP_STR | |
622 | BGP_STR | |
623 | BGP_INSTANCE_ALL_HELP_STR | |
624 | "BGP nexthop table\n") | |
625 | { | |
d62a17ae | 626 | bgp_show_all_instances_nexthops_vty(vty); |
627 | return CMD_SUCCESS; | |
f186de26 | 628 | } |
629 | ||
d62a17ae | 630 | void bgp_scan_init(struct bgp *bgp) |
718e3744 | 631 | { |
d62a17ae | 632 | afi_t afi; |
633 | ||
634 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
635 | bgp->nexthop_cache_table[afi] = | |
960035b2 PZ |
636 | bgp_table_init(bgp, afi, SAFI_UNICAST); |
637 | bgp->connected_table[afi] = bgp_table_init(bgp, afi, | |
638 | SAFI_UNICAST); | |
d62a17ae | 639 | bgp->import_check_table[afi] = |
960035b2 | 640 | bgp_table_init(bgp, afi, SAFI_UNICAST); |
d62a17ae | 641 | } |
fc9a856f DS |
642 | } |
643 | ||
d62a17ae | 644 | void bgp_scan_vty_init(void) |
fc9a856f | 645 | { |
d62a17ae | 646 | install_element(VIEW_NODE, &show_ip_bgp_nexthop_cmd); |
647 | install_element(VIEW_NODE, &show_ip_bgp_instance_all_nexthop_cmd); | |
718e3744 | 648 | } |
228da428 | 649 | |
d62a17ae | 650 | void bgp_scan_finish(struct bgp *bgp) |
228da428 | 651 | { |
d62a17ae | 652 | afi_t afi; |
6c88b44d | 653 | |
d62a17ae | 654 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { |
655 | /* Only the current one needs to be reset. */ | |
656 | bgp_nexthop_cache_reset(bgp->nexthop_cache_table[afi]); | |
657 | bgp_table_unlock(bgp->nexthop_cache_table[afi]); | |
658 | bgp->nexthop_cache_table[afi] = NULL; | |
228da428 | 659 | |
3292693b DS |
660 | bgp->connected_table[afi]->route_table->cleanup = |
661 | bgp_connected_cleanup; | |
d62a17ae | 662 | bgp_table_unlock(bgp->connected_table[afi]); |
663 | bgp->connected_table[afi] = NULL; | |
078430f6 | 664 | |
d62a17ae | 665 | bgp_table_unlock(bgp->import_check_table[afi]); |
666 | bgp->import_check_table[afi] = NULL; | |
667 | } | |
228da428 | 668 | } |