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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 | { | |
3f65c5b1 DS |
125 | bgp->tip_hash = hash_create(bgp_tip_hash_key_make, |
126 | bgp_tip_hash_cmp, | |
127 | "BGP TIP hash"); | |
db0e1937 MK |
128 | } |
129 | ||
130 | void bgp_tip_hash_destroy(struct bgp *bgp) | |
131 | { | |
132 | if (bgp->tip_hash == NULL) | |
133 | return; | |
134 | hash_clean(bgp->tip_hash, bgp_tip_hash_free); | |
135 | hash_free(bgp->tip_hash); | |
136 | bgp->tip_hash = NULL; | |
137 | } | |
138 | ||
139 | void bgp_tip_add(struct bgp *bgp, struct in_addr *tip) | |
140 | { | |
0291c246 MK |
141 | struct tip_addr tmp; |
142 | struct tip_addr *addr; | |
db0e1937 MK |
143 | |
144 | tmp.addr = *tip; | |
145 | ||
146 | addr = hash_get(bgp->tip_hash, &tmp, bgp_tip_hash_alloc); | |
147 | if (!addr) | |
148 | return; | |
149 | ||
150 | addr->refcnt++; | |
151 | } | |
152 | ||
153 | void bgp_tip_del(struct bgp *bgp, struct in_addr *tip) | |
154 | { | |
0291c246 MK |
155 | struct tip_addr tmp; |
156 | struct tip_addr *addr; | |
db0e1937 MK |
157 | |
158 | tmp.addr = *tip; | |
159 | ||
160 | addr = hash_lookup(bgp->tip_hash, &tmp); | |
161 | /* may have been deleted earlier by bgp_interface_down() */ | |
162 | if (addr == NULL) | |
163 | return; | |
164 | ||
165 | addr->refcnt--; | |
166 | ||
167 | if (addr->refcnt == 0) { | |
168 | hash_release(bgp->tip_hash, addr); | |
169 | XFREE(MTYPE_TIP_ADDR, addr); | |
170 | } | |
171 | } | |
10f9bf3f | 172 | |
d62a17ae | 173 | static void *bgp_address_hash_alloc(void *p) |
10f9bf3f | 174 | { |
d62a17ae | 175 | const struct in_addr *val = (const struct in_addr *)p; |
176 | struct bgp_addr *addr; | |
10f9bf3f | 177 | |
d62a17ae | 178 | addr = XMALLOC(MTYPE_BGP_ADDR, sizeof(struct bgp_addr)); |
179 | addr->refcnt = 0; | |
180 | addr->addr.s_addr = val->s_addr; | |
10f9bf3f | 181 | |
d62a17ae | 182 | return addr; |
10f9bf3f JBD |
183 | } |
184 | ||
d62a17ae | 185 | static void bgp_address_hash_free(void *addr) |
37d361e7 | 186 | { |
d62a17ae | 187 | XFREE(MTYPE_BGP_ADDR, addr); |
37d361e7 RW |
188 | } |
189 | ||
d62a17ae | 190 | static unsigned int bgp_address_hash_key_make(void *p) |
10f9bf3f | 191 | { |
d62a17ae | 192 | const struct bgp_addr *addr = p; |
10f9bf3f | 193 | |
d62a17ae | 194 | return jhash_1word(addr->addr.s_addr, 0); |
10f9bf3f JBD |
195 | } |
196 | ||
d62a17ae | 197 | static int bgp_address_hash_cmp(const void *p1, const void *p2) |
10f9bf3f | 198 | { |
d62a17ae | 199 | const struct bgp_addr *addr1 = p1; |
200 | const struct bgp_addr *addr2 = p2; | |
10f9bf3f | 201 | |
d62a17ae | 202 | return addr1->addr.s_addr == addr2->addr.s_addr; |
10f9bf3f JBD |
203 | } |
204 | ||
d62a17ae | 205 | void bgp_address_init(struct bgp *bgp) |
10f9bf3f | 206 | { |
d62a17ae | 207 | bgp->address_hash = hash_create(bgp_address_hash_key_make, |
3f65c5b1 DS |
208 | bgp_address_hash_cmp, |
209 | "BGP Address Hash"); | |
10f9bf3f JBD |
210 | } |
211 | ||
d62a17ae | 212 | void bgp_address_destroy(struct bgp *bgp) |
bb86c601 | 213 | { |
d62a17ae | 214 | if (bgp->address_hash == NULL) |
215 | return; | |
216 | hash_clean(bgp->address_hash, bgp_address_hash_free); | |
217 | hash_free(bgp->address_hash); | |
218 | bgp->address_hash = NULL; | |
bb86c601 LB |
219 | } |
220 | ||
d62a17ae | 221 | static void bgp_address_add(struct bgp *bgp, struct prefix *p) |
10f9bf3f | 222 | { |
d62a17ae | 223 | struct bgp_addr tmp; |
224 | struct bgp_addr *addr; | |
10f9bf3f | 225 | |
d62a17ae | 226 | tmp.addr = p->u.prefix4; |
10f9bf3f | 227 | |
d62a17ae | 228 | addr = hash_get(bgp->address_hash, &tmp, bgp_address_hash_alloc); |
229 | if (!addr) | |
230 | return; | |
5ce10e92 | 231 | |
d62a17ae | 232 | addr->refcnt++; |
10f9bf3f JBD |
233 | } |
234 | ||
d62a17ae | 235 | static void bgp_address_del(struct bgp *bgp, struct prefix *p) |
10f9bf3f | 236 | { |
d62a17ae | 237 | struct bgp_addr tmp; |
238 | struct bgp_addr *addr; | |
10f9bf3f | 239 | |
d62a17ae | 240 | tmp.addr = p->u.prefix4; |
10f9bf3f | 241 | |
d62a17ae | 242 | addr = hash_lookup(bgp->address_hash, &tmp); |
243 | /* may have been deleted earlier by bgp_interface_down() */ | |
244 | if (addr == NULL) | |
245 | return; | |
9e47abd8 | 246 | |
d62a17ae | 247 | addr->refcnt--; |
10f9bf3f | 248 | |
d62a17ae | 249 | if (addr->refcnt == 0) { |
250 | hash_release(bgp->address_hash, addr); | |
251 | XFREE(MTYPE_BGP_ADDR, addr); | |
252 | } | |
10f9bf3f JBD |
253 | } |
254 | ||
6b0655a2 | 255 | |
d62a17ae | 256 | struct bgp_connected_ref { |
257 | unsigned int refcnt; | |
718e3744 | 258 | }; |
259 | ||
d62a17ae | 260 | void bgp_connected_add(struct bgp *bgp, struct connected *ifc) |
718e3744 | 261 | { |
d62a17ae | 262 | struct prefix p; |
263 | struct prefix *addr; | |
264 | struct bgp_node *rn; | |
265 | struct bgp_connected_ref *bc; | |
266 | struct listnode *node, *nnode; | |
267 | struct peer *peer; | |
268 | ||
269 | addr = ifc->address; | |
270 | ||
271 | p = *(CONNECTED_PREFIX(ifc)); | |
272 | if (addr->family == AF_INET) { | |
273 | apply_mask_ipv4((struct prefix_ipv4 *)&p); | |
274 | ||
275 | if (prefix_ipv4_any((struct prefix_ipv4 *)&p)) | |
276 | return; | |
277 | ||
278 | bgp_address_add(bgp, addr); | |
279 | ||
280 | rn = bgp_node_get(bgp->connected_table[AFI_IP], | |
281 | (struct prefix *)&p); | |
282 | if (rn->info) { | |
283 | bc = rn->info; | |
284 | bc->refcnt++; | |
285 | } else { | |
286 | bc = XCALLOC(MTYPE_BGP_CONN, | |
287 | sizeof(struct bgp_connected_ref)); | |
288 | bc->refcnt = 1; | |
289 | rn->info = bc; | |
290 | } | |
8ffedcea | 291 | |
d62a17ae | 292 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { |
293 | if (peer->conf_if | |
294 | && (strcmp(peer->conf_if, ifc->ifp->name) == 0) | |
295 | && peer->status != Established | |
296 | && !CHECK_FLAG(peer->flags, | |
297 | PEER_FLAG_IFPEER_V6ONLY)) { | |
298 | if (peer_active(peer)) | |
299 | BGP_EVENT_ADD(peer, BGP_Stop); | |
300 | BGP_EVENT_ADD(peer, BGP_Start); | |
301 | } | |
302 | } | |
303 | } else if (addr->family == AF_INET6) { | |
304 | apply_mask_ipv6((struct prefix_ipv6 *)&p); | |
305 | ||
306 | if (IN6_IS_ADDR_UNSPECIFIED(&p.u.prefix6)) | |
307 | return; | |
308 | ||
309 | if (IN6_IS_ADDR_LINKLOCAL(&p.u.prefix6)) | |
310 | return; | |
311 | ||
312 | rn = bgp_node_get(bgp->connected_table[AFI_IP6], | |
313 | (struct prefix *)&p); | |
314 | if (rn->info) { | |
315 | bc = rn->info; | |
316 | bc->refcnt++; | |
317 | } else { | |
318 | bc = XCALLOC(MTYPE_BGP_CONN, | |
319 | sizeof(struct bgp_connected_ref)); | |
320 | bc->refcnt = 1; | |
321 | rn->info = bc; | |
322 | } | |
718e3744 | 323 | } |
718e3744 | 324 | } |
325 | ||
d62a17ae | 326 | void bgp_connected_delete(struct bgp *bgp, struct connected *ifc) |
718e3744 | 327 | { |
d62a17ae | 328 | struct prefix p; |
329 | struct prefix *addr; | |
330 | struct bgp_node *rn; | |
331 | struct bgp_connected_ref *bc; | |
718e3744 | 332 | |
d62a17ae | 333 | addr = ifc->address; |
718e3744 | 334 | |
d62a17ae | 335 | p = *(CONNECTED_PREFIX(ifc)); |
336 | if (addr->family == AF_INET) { | |
337 | apply_mask_ipv4((struct prefix_ipv4 *)&p); | |
718e3744 | 338 | |
d62a17ae | 339 | if (prefix_ipv4_any((struct prefix_ipv4 *)&p)) |
340 | return; | |
718e3744 | 341 | |
d62a17ae | 342 | bgp_address_del(bgp, addr); |
10f9bf3f | 343 | |
d62a17ae | 344 | rn = bgp_node_lookup(bgp->connected_table[AFI_IP], &p); |
345 | if (!rn) | |
346 | return; | |
718e3744 | 347 | |
d62a17ae | 348 | bc = rn->info; |
349 | bc->refcnt--; | |
350 | if (bc->refcnt == 0) { | |
351 | XFREE(MTYPE_BGP_CONN, bc); | |
352 | rn->info = NULL; | |
353 | } | |
354 | bgp_unlock_node(rn); | |
355 | bgp_unlock_node(rn); | |
356 | } else if (addr->family == AF_INET6) { | |
357 | apply_mask_ipv6((struct prefix_ipv6 *)&p); | |
358 | ||
359 | if (IN6_IS_ADDR_UNSPECIFIED(&p.u.prefix6)) | |
360 | return; | |
361 | ||
362 | if (IN6_IS_ADDR_LINKLOCAL(&p.u.prefix6)) | |
363 | return; | |
364 | ||
365 | rn = bgp_node_lookup(bgp->connected_table[AFI_IP6], | |
366 | (struct prefix *)&p); | |
367 | if (!rn) | |
368 | return; | |
369 | ||
370 | bc = rn->info; | |
371 | bc->refcnt--; | |
372 | if (bc->refcnt == 0) { | |
373 | XFREE(MTYPE_BGP_CONN, bc); | |
374 | rn->info = NULL; | |
375 | } | |
376 | bgp_unlock_node(rn); | |
377 | bgp_unlock_node(rn); | |
718e3744 | 378 | } |
718e3744 | 379 | } |
380 | ||
d62a17ae | 381 | int bgp_nexthop_self(struct bgp *bgp, struct in_addr nh_addr) |
718e3744 | 382 | { |
d62a17ae | 383 | struct bgp_addr tmp, *addr; |
db0e1937 | 384 | struct tip_addr tmp_tip, *tip; |
718e3744 | 385 | |
d62a17ae | 386 | tmp.addr = nh_addr; |
10f9bf3f | 387 | |
d62a17ae | 388 | addr = hash_lookup(bgp->address_hash, &tmp); |
389 | if (addr) | |
390 | return 1; | |
718e3744 | 391 | |
db0e1937 MK |
392 | tmp_tip.addr = nh_addr; |
393 | tip = hash_lookup(bgp->tip_hash, &tmp_tip); | |
394 | if (tip) | |
395 | return 1; | |
396 | ||
d62a17ae | 397 | return 0; |
718e3744 | 398 | } |
6b0655a2 | 399 | |
d62a17ae | 400 | int bgp_multiaccess_check_v4(struct in_addr nexthop, struct peer *peer) |
718e3744 | 401 | { |
d62a17ae | 402 | struct bgp_node *rn1; |
403 | struct bgp_node *rn2; | |
404 | struct prefix p; | |
405 | int ret; | |
406 | ||
407 | p.family = AF_INET; | |
408 | p.prefixlen = IPV4_MAX_BITLEN; | |
409 | p.u.prefix4 = nexthop; | |
410 | ||
411 | rn1 = bgp_node_match(peer->bgp->connected_table[AFI_IP], &p); | |
412 | if (!rn1) | |
413 | return 0; | |
414 | ||
415 | p.family = AF_INET; | |
416 | p.prefixlen = IPV4_MAX_BITLEN; | |
417 | p.u.prefix4 = peer->su.sin.sin_addr; | |
418 | ||
419 | rn2 = bgp_node_match(peer->bgp->connected_table[AFI_IP], &p); | |
420 | if (!rn2) { | |
421 | bgp_unlock_node(rn1); | |
422 | return 0; | |
423 | } | |
718e3744 | 424 | |
d62a17ae | 425 | ret = (rn1 == rn2) ? 1 : 0; |
718e3744 | 426 | |
d62a17ae | 427 | bgp_unlock_node(rn1); |
428 | bgp_unlock_node(rn2); | |
718e3744 | 429 | |
d62a17ae | 430 | return (ret); |
718e3744 | 431 | } |
432 | ||
d62a17ae | 433 | static void bgp_show_nexthops(struct vty *vty, struct bgp *bgp, int detail) |
fb018d25 | 434 | { |
d62a17ae | 435 | struct bgp_node *rn; |
436 | struct bgp_nexthop_cache *bnc; | |
437 | char buf[PREFIX2STR_BUFFER]; | |
438 | struct nexthop *nexthop; | |
439 | time_t tbuf; | |
440 | afi_t afi; | |
441 | ||
442 | vty_out(vty, "Current BGP nexthop cache:\n"); | |
443 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
444 | if (!bgp->nexthop_cache_table[afi]) | |
445 | continue; | |
446 | ||
447 | for (rn = bgp_table_top(bgp->nexthop_cache_table[afi]); rn; | |
448 | rn = bgp_route_next(rn)) { | |
449 | if ((bnc = rn->info) != NULL) { | |
450 | if (CHECK_FLAG(bnc->flags, BGP_NEXTHOP_VALID)) { | |
451 | vty_out(vty, | |
452 | " %s valid [IGP metric %d], #paths %d\n", | |
453 | inet_ntop(rn->p.family, | |
454 | &rn->p.u.prefix, buf, | |
455 | sizeof(buf)), | |
456 | bnc->metric, bnc->path_count); | |
457 | if (detail) | |
458 | for (nexthop = bnc->nexthop; | |
459 | nexthop; | |
460 | nexthop = nexthop->next) | |
461 | switch (nexthop->type) { | |
462 | case NEXTHOP_TYPE_IPV6: | |
463 | vty_out(vty, | |
464 | " gate %s\n", | |
465 | inet_ntop( | |
466 | AF_INET6, | |
467 | &nexthop->gate | |
468 | .ipv6, | |
469 | buf, | |
470 | sizeof(buf))); | |
471 | break; | |
472 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
473 | vty_out(vty, | |
474 | " gate %s, if %s\n", | |
475 | inet_ntop( | |
476 | AF_INET6, | |
477 | &nexthop->gate | |
478 | .ipv6, | |
479 | buf, | |
480 | sizeof(buf)), | |
481 | ifindex2ifname( | |
482 | nexthop->ifindex, | |
483 | bgp->vrf_id)); | |
484 | break; | |
485 | case NEXTHOP_TYPE_IPV4: | |
486 | vty_out(vty, | |
487 | " gate %s\n", | |
488 | inet_ntop( | |
489 | AF_INET, | |
490 | &nexthop->gate | |
491 | .ipv4, | |
492 | buf, | |
493 | sizeof(buf))); | |
494 | break; | |
495 | case NEXTHOP_TYPE_IFINDEX: | |
496 | vty_out(vty, | |
497 | " if %s\n", | |
498 | ifindex2ifname( | |
499 | nexthop->ifindex, | |
500 | bgp->vrf_id)); | |
501 | break; | |
502 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
503 | vty_out(vty, | |
504 | " gate %s, if %s\n", | |
505 | inet_ntop( | |
506 | AF_INET, | |
507 | &nexthop->gate | |
508 | .ipv4, | |
509 | buf, | |
510 | sizeof(buf)), | |
511 | ifindex2ifname( | |
512 | nexthop->ifindex, | |
513 | bgp->vrf_id)); | |
514 | break; | |
515 | default: | |
516 | vty_out(vty, | |
517 | " invalid nexthop type %u\n", | |
518 | nexthop->type); | |
519 | } | |
520 | } else { | |
521 | vty_out(vty, " %s invalid\n", | |
522 | inet_ntop(rn->p.family, | |
523 | &rn->p.u.prefix, buf, | |
524 | sizeof(buf))); | |
525 | if (CHECK_FLAG(bnc->flags, | |
526 | BGP_NEXTHOP_CONNECTED)) | |
527 | vty_out(vty, | |
528 | " Must be Connected\n"); | |
529 | } | |
530 | tbuf = time(NULL) | |
531 | - (bgp_clock() - bnc->last_update); | |
532 | vty_out(vty, " Last update: %s", ctime(&tbuf)); | |
533 | vty_out(vty, "\n"); | |
da11a696 DS |
534 | } |
535 | } | |
fb018d25 | 536 | } |
f186de26 | 537 | } |
538 | ||
d62a17ae | 539 | static int show_ip_bgp_nexthop_table(struct vty *vty, const char *name, |
540 | int detail) | |
f186de26 | 541 | { |
d62a17ae | 542 | struct bgp *bgp; |
543 | ||
544 | if (name) | |
545 | bgp = bgp_lookup_by_name(name); | |
546 | else | |
547 | bgp = bgp_get_default(); | |
548 | if (!bgp) { | |
549 | vty_out(vty, "%% No such BGP instance exist\n"); | |
550 | return CMD_WARNING; | |
551 | } | |
f186de26 | 552 | |
d62a17ae | 553 | bgp_show_nexthops(vty, bgp, detail); |
f186de26 | 554 | |
d62a17ae | 555 | return CMD_SUCCESS; |
fb018d25 DS |
556 | } |
557 | ||
d62a17ae | 558 | static void bgp_show_all_instances_nexthops_vty(struct vty *vty) |
f186de26 | 559 | { |
d62a17ae | 560 | struct listnode *node, *nnode; |
561 | struct bgp *bgp; | |
562 | ||
563 | for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) { | |
564 | vty_out(vty, "\nInstance %s:\n", | |
565 | (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
566 | ? "Default" | |
567 | : bgp->name); | |
568 | bgp_show_nexthops(vty, bgp, 0); | |
569 | } | |
f186de26 | 570 | } |
571 | ||
fb018d25 DS |
572 | DEFUN (show_ip_bgp_nexthop, |
573 | show_ip_bgp_nexthop_cmd, | |
18c57037 | 574 | "show [ip] bgp [<view|vrf> VIEWVRFNAME] nexthop [detail]", |
50ef26d4 | 575 | SHOW_STR |
576 | IP_STR | |
577 | BGP_STR | |
8386ac43 | 578 | BGP_INSTANCE_HELP_STR |
3a2d747c QY |
579 | "BGP nexthop table\n" |
580 | "Show detailed information\n") | |
50ef26d4 | 581 | { |
d62a17ae | 582 | int idx = 0; |
b7ada628 DS |
583 | char *vrf = NULL; |
584 | ||
585 | if (argv_find(argv, argc, "view", &idx) | |
586 | || argv_find(argv, argc, "vrf", &idx)) | |
587 | vrf = argv[++idx]->arg; | |
d62a17ae | 588 | int detail = argv_find(argv, argc, "detail", &idx) ? 1 : 0; |
589 | return show_ip_bgp_nexthop_table(vty, vrf, detail); | |
50ef26d4 | 590 | } |
591 | ||
f186de26 | 592 | DEFUN (show_ip_bgp_instance_all_nexthop, |
593 | show_ip_bgp_instance_all_nexthop_cmd, | |
bec37ba5 | 594 | "show [ip] bgp <view|vrf> all nexthop", |
f186de26 | 595 | SHOW_STR |
596 | IP_STR | |
597 | BGP_STR | |
598 | BGP_INSTANCE_ALL_HELP_STR | |
599 | "BGP nexthop table\n") | |
600 | { | |
d62a17ae | 601 | bgp_show_all_instances_nexthops_vty(vty); |
602 | return CMD_SUCCESS; | |
f186de26 | 603 | } |
604 | ||
d62a17ae | 605 | void bgp_scan_init(struct bgp *bgp) |
718e3744 | 606 | { |
d62a17ae | 607 | afi_t afi; |
608 | ||
609 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
610 | bgp->nexthop_cache_table[afi] = | |
611 | bgp_table_init(afi, SAFI_UNICAST); | |
612 | bgp->connected_table[afi] = bgp_table_init(afi, SAFI_UNICAST); | |
613 | bgp->import_check_table[afi] = | |
614 | bgp_table_init(afi, SAFI_UNICAST); | |
615 | } | |
fc9a856f DS |
616 | } |
617 | ||
d62a17ae | 618 | void bgp_scan_vty_init(void) |
fc9a856f | 619 | { |
d62a17ae | 620 | install_element(VIEW_NODE, &show_ip_bgp_nexthop_cmd); |
621 | install_element(VIEW_NODE, &show_ip_bgp_instance_all_nexthop_cmd); | |
718e3744 | 622 | } |
228da428 | 623 | |
d62a17ae | 624 | void bgp_scan_finish(struct bgp *bgp) |
228da428 | 625 | { |
d62a17ae | 626 | afi_t afi; |
6c88b44d | 627 | |
d62a17ae | 628 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { |
629 | /* Only the current one needs to be reset. */ | |
630 | bgp_nexthop_cache_reset(bgp->nexthop_cache_table[afi]); | |
631 | bgp_table_unlock(bgp->nexthop_cache_table[afi]); | |
632 | bgp->nexthop_cache_table[afi] = NULL; | |
228da428 | 633 | |
d62a17ae | 634 | bgp_table_unlock(bgp->connected_table[afi]); |
635 | bgp->connected_table[afi] = NULL; | |
078430f6 | 636 | |
d62a17ae | 637 | bgp_table_unlock(bgp->import_check_table[afi]); |
638 | bgp->import_check_table[afi] = NULL; | |
639 | } | |
228da428 | 640 | } |