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c43ed2e4 DS |
1 | /** |
2 | * bgp_bfd.c: BGP BFD handling routines | |
3 | * | |
4 | * @copyright Copyright (C) 2015 Cumulus Networks, Inc. | |
5 | * | |
6 | * This file is part of GNU Zebra. | |
7 | * | |
8 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * GNU Zebra is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
896014f4 DL |
18 | * You should have received a copy of the GNU General Public License along |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
c43ed2e4 DS |
21 | */ |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "command.h" | |
26 | #include "linklist.h" | |
27 | #include "memory.h" | |
28 | #include "prefix.h" | |
29 | #include "thread.h" | |
30 | #include "buffer.h" | |
31 | #include "stream.h" | |
21bfce98 | 32 | #include "vrf.h" |
c43ed2e4 | 33 | #include "zclient.h" |
7f342629 | 34 | #include "bfd.h" |
856ca177 | 35 | #include "lib/json.h" |
039f3a34 DS |
36 | #include "filter.h" |
37 | ||
c43ed2e4 | 38 | #include "bgpd/bgpd.h" |
7f342629 | 39 | #include "bgp_fsm.h" |
c43ed2e4 DS |
40 | #include "bgpd/bgp_bfd.h" |
41 | #include "bgpd/bgp_debug.h" | |
42 | #include "bgpd/bgp_vty.h" | |
43 | ||
21bfce98 RZ |
44 | DEFINE_MTYPE_STATIC(BGPD, BFD_CONFIG, "BFD configuration data"); |
45 | ||
c43ed2e4 DS |
46 | extern struct zclient *zclient; |
47 | ||
21bfce98 RZ |
48 | static void bfd_session_status_update(struct bfd_session_params *bsp, |
49 | const struct bfd_session_status *bss, | |
50 | void *arg) | |
c43ed2e4 | 51 | { |
21bfce98 | 52 | struct peer *peer = arg; |
7f342629 | 53 | |
259f4236 | 54 | if (BGP_DEBUG(bfd, BFD_LIB)) |
21bfce98 RZ |
55 | zlog_debug("%s: neighbor %s vrf %s(%u) bfd state %s -> %s", |
56 | __func__, peer->conf_if ? peer->conf_if : peer->host, | |
57 | bfd_sess_vrf(bsp), bfd_sess_vrf_id(bsp), | |
58 | bfd_get_status_str(bss->previous_state), | |
59 | bfd_get_status_str(bss->state)); | |
60 | ||
61 | if (bss->state == BSS_DOWN && bss->previous_state == BSS_UP) { | |
62 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_NSF_MODE) | |
63 | && bfd_sess_cbit(bsp) && !bss->remote_cbit) { | |
259f4236 | 64 | if (BGP_DEBUG(bfd, BFD_LIB)) |
21bfce98 RZ |
65 | zlog_info( |
66 | "%s BFD DOWN message ignored in the process of graceful restart when C bit is cleared", | |
67 | peer->host); | |
68 | return; | |
69 | } | |
70 | peer->last_reset = PEER_DOWN_BFD_DOWN; | |
71 | BGP_EVENT_ADD(peer, BGP_Stop); | |
72 | } | |
c43ed2e4 | 73 | |
21bfce98 | 74 | if (bss->state == BSS_UP && bss->previous_state != BSS_UP |
feb17238 | 75 | && !peer_established(peer)) { |
21bfce98 RZ |
76 | if (!BGP_PEER_START_SUPPRESSED(peer)) { |
77 | bgp_fsm_nht_update(peer, true); | |
78 | BGP_EVENT_ADD(peer, BGP_Start); | |
79 | } | |
80 | } | |
c43ed2e4 DS |
81 | } |
82 | ||
21bfce98 | 83 | void bgp_peer_config_apply(struct peer *p, struct peer_group *pg) |
c43ed2e4 | 84 | { |
21bfce98 RZ |
85 | struct listnode *n; |
86 | struct peer *pn; | |
87 | struct peer *gconfig; | |
88 | ||
89 | /* When called on a group, apply to all peers. */ | |
90 | if (CHECK_FLAG(p->sflags, PEER_STATUS_GROUP)) { | |
91 | for (ALL_LIST_ELEMENTS_RO(p->group->peer, n, pn)) | |
92 | bgp_peer_config_apply(pn, pg); | |
93 | return; | |
94 | } | |
986aa00f | 95 | |
21bfce98 RZ |
96 | /* No group, just use current configuration. */ |
97 | if (pg == NULL || pg->conf->bfd_config == NULL) { | |
98 | bfd_sess_set_timers(p->bfd_config->session, | |
99 | p->bfd_config->detection_multiplier, | |
100 | p->bfd_config->min_rx, | |
101 | p->bfd_config->min_tx); | |
102 | bfd_sess_set_cbit(p->bfd_config->session, p->bfd_config->cbit); | |
103 | bfd_sess_set_profile(p->bfd_config->session, | |
104 | p->bfd_config->profile); | |
105 | bfd_sess_install(p->bfd_config->session); | |
106 | return; | |
107 | } | |
986aa00f | 108 | |
21bfce98 RZ |
109 | /* |
110 | * Check if the group configuration was overwritten or apply group | |
111 | * configuration. | |
112 | */ | |
113 | gconfig = pg->conf; | |
114 | ||
115 | /* | |
116 | * If using default control plane independent configuration, | |
117 | * then prefer group's (e.g. it means it wasn't manually configured). | |
118 | */ | |
119 | if (!p->bfd_config->cbit) | |
120 | bfd_sess_set_cbit(p->bfd_config->session, | |
121 | gconfig->bfd_config->cbit); | |
122 | else | |
123 | bfd_sess_set_cbit(p->bfd_config->session, p->bfd_config->cbit); | |
986aa00f | 124 | |
21bfce98 RZ |
125 | /* If no profile was specified in peer, then use the group profile. */ |
126 | if (p->bfd_config->profile[0] == 0) | |
127 | bfd_sess_set_profile(p->bfd_config->session, | |
128 | gconfig->bfd_config->profile); | |
d62a17ae | 129 | else |
21bfce98 RZ |
130 | bfd_sess_set_profile(p->bfd_config->session, |
131 | p->bfd_config->profile); | |
132 | ||
133 | /* If no specific timers were configured, then use the group timers. */ | |
134 | if (p->bfd_config->detection_multiplier == BFD_DEF_DETECT_MULT | |
135 | || p->bfd_config->min_rx == BFD_DEF_MIN_RX | |
136 | || p->bfd_config->min_tx == BFD_DEF_MIN_TX) | |
137 | bfd_sess_set_timers(p->bfd_config->session, | |
138 | gconfig->bfd_config->detection_multiplier, | |
139 | gconfig->bfd_config->min_rx, | |
140 | gconfig->bfd_config->min_tx); | |
141 | else | |
142 | bfd_sess_set_timers(p->bfd_config->session, | |
143 | p->bfd_config->detection_multiplier, | |
144 | p->bfd_config->min_rx, | |
145 | p->bfd_config->min_tx); | |
146 | ||
147 | bfd_sess_install(p->bfd_config->session); | |
c43ed2e4 DS |
148 | } |
149 | ||
21bfce98 | 150 | void bgp_peer_bfd_update_source(struct peer *p) |
c43ed2e4 | 151 | { |
21bfce98 | 152 | struct bfd_session_params *session = p->bfd_config->session; |
7196f56e | 153 | const union sockunion *source; |
21bfce98 RZ |
154 | bool changed = false; |
155 | int family; | |
156 | union { | |
157 | struct in_addr v4; | |
158 | struct in6_addr v6; | |
159 | } src, dst; | |
160 | ||
161 | /* Nothing to do for groups. */ | |
162 | if (CHECK_FLAG(p->sflags, PEER_STATUS_GROUP)) | |
95a99382 | 163 | return; |
d62a17ae | 164 | |
7196f56e | 165 | /* Figure out the correct source to use. */ |
5b758690 | 166 | if (CHECK_FLAG(p->flags, PEER_FLAG_UPDATE_SOURCE) && p->update_source) |
7196f56e RZ |
167 | source = p->update_source; |
168 | else | |
169 | source = p->su_local; | |
170 | ||
21bfce98 RZ |
171 | /* Update peer's source/destination addresses. */ |
172 | bfd_sess_addresses(session, &family, &src.v6, &dst.v6); | |
173 | if (family == AF_INET) { | |
7196f56e | 174 | if ((source && source->sin.sin_addr.s_addr != src.v4.s_addr) |
21bfce98 | 175 | || p->su.sin.sin_addr.s_addr != dst.v4.s_addr) { |
259f4236 | 176 | if (BGP_DEBUG(bfd, BFD_LIB)) |
21bfce98 RZ |
177 | zlog_debug( |
178 | "%s: address [%pI4->%pI4] to [%pI4->%pI4]", | |
179 | __func__, &src.v4, &dst.v4, | |
7196f56e RZ |
180 | source ? &source->sin.sin_addr |
181 | : &src.v4, | |
21bfce98 RZ |
182 | &p->su.sin.sin_addr); |
183 | ||
184 | bfd_sess_set_ipv4_addrs( | |
7196f56e | 185 | session, source ? &source->sin.sin_addr : NULL, |
21bfce98 RZ |
186 | &p->su.sin.sin_addr); |
187 | changed = true; | |
188 | } | |
189 | } else { | |
7196f56e | 190 | if ((source && memcmp(&source->sin6, &src.v6, sizeof(src.v6))) |
21bfce98 | 191 | || memcmp(&p->su.sin6, &dst.v6, sizeof(dst.v6))) { |
259f4236 | 192 | if (BGP_DEBUG(bfd, BFD_LIB)) |
21bfce98 RZ |
193 | zlog_debug( |
194 | "%s: address [%pI6->%pI6] to [%pI6->%pI6]", | |
195 | __func__, &src.v6, &dst.v6, | |
7196f56e RZ |
196 | source ? &source->sin6.sin6_addr |
197 | : &src.v6, | |
21bfce98 RZ |
198 | &p->su.sin6.sin6_addr); |
199 | ||
7196f56e RZ |
200 | bfd_sess_set_ipv6_addrs(session, |
201 | source ? &source->sin6.sin6_addr | |
202 | : NULL, | |
203 | &p->su.sin6.sin6_addr); | |
21bfce98 RZ |
204 | changed = true; |
205 | } | |
206 | } | |
d62a17ae | 207 | |
21bfce98 RZ |
208 | /* Update interface. */ |
209 | if (p->nexthop.ifp && bfd_sess_interface(session) == NULL) { | |
259f4236 | 210 | if (BGP_DEBUG(bfd, BFD_LIB)) |
21bfce98 RZ |
211 | zlog_debug("%s: interface none to %s", __func__, |
212 | p->nexthop.ifp->name); | |
d62a17ae | 213 | |
21bfce98 RZ |
214 | bfd_sess_set_interface(session, p->nexthop.ifp->name); |
215 | changed = true; | |
d62a17ae | 216 | } |
21bfce98 RZ |
217 | |
218 | /* | |
219 | * Update TTL. | |
220 | * | |
221 | * Two cases: | |
222 | * - We detected that the peer is a hop away from us (remove multi hop). | |
223 | * (this happens when `p->shared_network` is set to `true`) | |
224 | * - eBGP multi hop / TTL security changed. | |
9beff0bd | 225 | */ |
21bfce98 | 226 | if (!PEER_IS_MULTIHOP(p) && bfd_sess_hop_count(session) > 1) { |
259f4236 | 227 | if (BGP_DEBUG(bfd, BFD_LIB)) |
21bfce98 RZ |
228 | zlog_debug("%s: TTL %d to 1", __func__, |
229 | bfd_sess_hop_count(session)); | |
02012bef | 230 | |
21bfce98 RZ |
231 | bfd_sess_set_hop_count(session, 1); |
232 | changed = true; | |
02012bef | 233 | } |
21bfce98 | 234 | if (PEER_IS_MULTIHOP(p) && p->ttl != bfd_sess_hop_count(session)) { |
259f4236 | 235 | if (BGP_DEBUG(bfd, BFD_LIB)) |
21bfce98 RZ |
236 | zlog_debug("%s: TTL %d to %d", __func__, |
237 | bfd_sess_hop_count(session), p->ttl); | |
02012bef | 238 | |
21bfce98 RZ |
239 | bfd_sess_set_hop_count(session, p->ttl); |
240 | changed = true; | |
02012bef RZ |
241 | } |
242 | ||
21bfce98 RZ |
243 | /* Update VRF. */ |
244 | if (bfd_sess_vrf_id(session) != p->bgp->vrf_id) { | |
259f4236 | 245 | if (BGP_DEBUG(bfd, BFD_LIB)) |
21bfce98 RZ |
246 | zlog_debug( |
247 | "%s: VRF %s(%d) to %s(%d)", __func__, | |
248 | bfd_sess_vrf(session), bfd_sess_vrf_id(session), | |
249 | vrf_id_to_name(p->bgp->vrf_id), p->bgp->vrf_id); | |
250 | ||
251 | bfd_sess_set_vrf(session, p->bgp->vrf_id); | |
252 | changed = true; | |
02012bef RZ |
253 | } |
254 | ||
21bfce98 RZ |
255 | if (changed) |
256 | bfd_sess_install(session); | |
c43ed2e4 DS |
257 | } |
258 | ||
21bfce98 RZ |
259 | /** |
260 | * Reset BFD configuration data structure to its defaults settings. | |
c43ed2e4 | 261 | */ |
21bfce98 | 262 | static void bgp_peer_bfd_reset(struct peer *p) |
c43ed2e4 | 263 | { |
21bfce98 RZ |
264 | /* Set defaults. */ |
265 | p->bfd_config->detection_multiplier = BFD_DEF_DETECT_MULT; | |
266 | p->bfd_config->min_rx = BFD_DEF_MIN_RX; | |
267 | p->bfd_config->min_tx = BFD_DEF_MIN_TX; | |
268 | p->bfd_config->cbit = false; | |
269 | p->bfd_config->profile[0] = 0; | |
c43ed2e4 DS |
270 | } |
271 | ||
21bfce98 | 272 | void bgp_peer_configure_bfd(struct peer *p, bool manual) |
c43ed2e4 | 273 | { |
21bfce98 RZ |
274 | /* Groups should not call this. */ |
275 | assert(!CHECK_FLAG(p->sflags, PEER_STATUS_GROUP)); | |
c43ed2e4 | 276 | |
21bfce98 RZ |
277 | /* Already configured, skip it. */ |
278 | if (p->bfd_config) { | |
279 | /* If manually active update flag. */ | |
280 | if (!p->bfd_config->manual) | |
281 | p->bfd_config->manual = manual; | |
c43ed2e4 | 282 | |
d62a17ae | 283 | return; |
21bfce98 | 284 | } |
c43ed2e4 | 285 | |
21bfce98 RZ |
286 | /* Allocate memory for configuration overrides. */ |
287 | p->bfd_config = XCALLOC(MTYPE_BFD_CONFIG, sizeof(*p->bfd_config)); | |
288 | p->bfd_config->manual = manual; | |
c43ed2e4 | 289 | |
21bfce98 RZ |
290 | /* Create new session and assign callback. */ |
291 | p->bfd_config->session = bfd_sess_new(bfd_session_status_update, p); | |
292 | bgp_peer_bfd_reset(p); | |
c43ed2e4 | 293 | |
21bfce98 RZ |
294 | /* Configure session with basic BGP peer data. */ |
295 | if (p->su.sa.sa_family == AF_INET) | |
296 | bfd_sess_set_ipv4_addrs(p->bfd_config->session, | |
297 | p->su_local ? &p->su_local->sin.sin_addr | |
298 | : NULL, | |
299 | &p->su.sin.sin_addr); | |
300 | else | |
301 | bfd_sess_set_ipv6_addrs( | |
302 | p->bfd_config->session, | |
303 | p->su_local ? &p->su_local->sin6.sin6_addr : NULL, | |
304 | &p->su.sin6.sin6_addr); | |
c43ed2e4 | 305 | |
21bfce98 RZ |
306 | bfd_sess_set_vrf(p->bfd_config->session, p->bgp->vrf_id); |
307 | bfd_sess_set_hop_count(p->bfd_config->session, | |
308 | PEER_IS_MULTIHOP(p) ? p->ttl : 1); | |
c43ed2e4 | 309 | |
21bfce98 RZ |
310 | if (p->nexthop.ifp) |
311 | bfd_sess_set_interface(p->bfd_config->session, | |
312 | p->nexthop.ifp->name); | |
fe0c4ed7 PG |
313 | } |
314 | ||
21bfce98 | 315 | static void bgp_peer_remove_bfd(struct peer *p) |
986aa00f | 316 | { |
21bfce98 RZ |
317 | /* Groups should not call this. */ |
318 | assert(!CHECK_FLAG(p->sflags, PEER_STATUS_GROUP)); | |
d62a17ae | 319 | |
21bfce98 RZ |
320 | /* |
321 | * Peer configuration was removed, however we must check if there | |
322 | * is still a group configuration to keep this running. | |
323 | */ | |
324 | if (p->group && p->group->conf->bfd_config) { | |
325 | p->bfd_config->manual = false; | |
326 | bgp_peer_bfd_reset(p); | |
327 | bgp_peer_config_apply(p, p->group); | |
d62a17ae | 328 | return; |
d62a17ae | 329 | } |
c43ed2e4 | 330 | |
373de4b5 RZ |
331 | if (p->bfd_config) |
332 | bfd_sess_free(&p->bfd_config->session); | |
333 | ||
21bfce98 | 334 | XFREE(MTYPE_BFD_CONFIG, p->bfd_config); |
c43ed2e4 DS |
335 | } |
336 | ||
21bfce98 | 337 | static void bgp_group_configure_bfd(struct peer *p) |
68fe91d6 | 338 | { |
21bfce98 RZ |
339 | struct listnode *n; |
340 | struct peer *pn; | |
68fe91d6 | 341 | |
21bfce98 RZ |
342 | /* Peers should not call this. */ |
343 | assert(CHECK_FLAG(p->sflags, PEER_STATUS_GROUP)); | |
68fe91d6 | 344 | |
21bfce98 RZ |
345 | /* Already allocated: do nothing. */ |
346 | if (p->bfd_config) | |
d62a17ae | 347 | return; |
68fe91d6 | 348 | |
21bfce98 | 349 | p->bfd_config = XCALLOC(MTYPE_BFD_CONFIG, sizeof(*p->bfd_config)); |
7555dc61 | 350 | |
21bfce98 RZ |
351 | /* Set defaults. */ |
352 | p->bfd_config->detection_multiplier = BFD_DEF_DETECT_MULT; | |
353 | p->bfd_config->min_rx = BFD_DEF_MIN_RX; | |
354 | p->bfd_config->min_tx = BFD_DEF_MIN_TX; | |
68fe91d6 | 355 | |
21bfce98 RZ |
356 | for (ALL_LIST_ELEMENTS_RO(p->group->peer, n, pn)) |
357 | bgp_peer_configure_bfd(pn, false); | |
68fe91d6 | 358 | } |
359 | ||
21bfce98 | 360 | static void bgp_group_remove_bfd(struct peer *p) |
c43ed2e4 | 361 | { |
21bfce98 RZ |
362 | struct listnode *n; |
363 | struct peer *pn; | |
d62a17ae | 364 | |
21bfce98 RZ |
365 | /* Peers should not call this. */ |
366 | assert(CHECK_FLAG(p->sflags, PEER_STATUS_GROUP)); | |
d62a17ae | 367 | |
21bfce98 RZ |
368 | /* Already freed: do nothing. */ |
369 | if (p->bfd_config == NULL) | |
370 | return; | |
137147c6 | 371 | |
21bfce98 RZ |
372 | /* Free configuration and point to `NULL`. */ |
373 | XFREE(MTYPE_BFD_CONFIG, p->bfd_config); | |
2dbe669b | 374 | |
21bfce98 RZ |
375 | /* Now that it is `NULL` recalculate configuration for all peers. */ |
376 | for (ALL_LIST_ELEMENTS_RO(p->group->peer, n, pn)) { | |
377 | if (pn->bfd_config->manual) | |
378 | bgp_peer_config_apply(pn, NULL); | |
2dbe669b | 379 | else |
21bfce98 | 380 | bgp_peer_remove_bfd(pn); |
d62a17ae | 381 | } |
c43ed2e4 DS |
382 | } |
383 | ||
21bfce98 | 384 | void bgp_peer_remove_bfd_config(struct peer *p) |
986aa00f | 385 | { |
21bfce98 RZ |
386 | if (CHECK_FLAG(p->sflags, PEER_STATUS_GROUP)) |
387 | bgp_group_remove_bfd(p); | |
388 | else | |
389 | bgp_peer_remove_bfd(p); | |
02012bef RZ |
390 | } |
391 | ||
c43ed2e4 DS |
392 | /* |
393 | * bgp_bfd_peer_config_write - Write the peer BFD configuration. | |
394 | */ | |
21bfce98 RZ |
395 | void bgp_bfd_peer_config_write(struct vty *vty, const struct peer *peer, |
396 | const char *addr) | |
c43ed2e4 | 397 | { |
21bfce98 RZ |
398 | /* |
399 | * Always show group BFD configuration, but peer only when explicitly | |
400 | * configured. | |
401 | */ | |
402 | if ((!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) | |
403 | && peer->bfd_config->manual) | |
404 | || CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
a0841732 RZ |
405 | #if HAVE_BFDD > 0 |
406 | vty_out(vty, " neighbor %s bfd\n", addr); | |
407 | #else | |
d62a17ae | 408 | vty_out(vty, " neighbor %s bfd %d %d %d\n", addr, |
21bfce98 RZ |
409 | peer->bfd_config->detection_multiplier, |
410 | peer->bfd_config->min_rx, peer->bfd_config->min_tx); | |
a0841732 | 411 | #endif /* HAVE_BFDD */ |
02012bef | 412 | } |
dcffea69 | 413 | |
21bfce98 RZ |
414 | if (peer->bfd_config->profile[0]) |
415 | vty_out(vty, " neighbor %s bfd profile %s\n", addr, | |
416 | peer->bfd_config->profile); | |
417 | ||
418 | if (peer->bfd_config->cbit) | |
419 | vty_out(vty, " neighbor %s bfd check-control-plane-failure\n", | |
420 | addr); | |
c43ed2e4 DS |
421 | } |
422 | ||
423 | /* | |
424 | * bgp_bfd_show_info - Show the peer BFD information. | |
425 | */ | |
21bfce98 | 426 | void bgp_bfd_show_info(struct vty *vty, const struct peer *peer, |
d62a17ae | 427 | json_object *json_neigh) |
c43ed2e4 | 428 | { |
83c44422 | 429 | bfd_sess_show(vty, json_neigh, peer->bfd_config->session); |
c43ed2e4 DS |
430 | } |
431 | ||
432 | DEFUN (neighbor_bfd, | |
433 | neighbor_bfd_cmd, | |
9ccf14f7 | 434 | "neighbor <A.B.C.D|X:X::X:X|WORD> bfd", |
c43ed2e4 DS |
435 | NEIGHBOR_STR |
436 | NEIGHBOR_ADDR_STR2 | |
437 | "Enables BFD support\n") | |
438 | { | |
d62a17ae | 439 | int idx_peer = 1; |
440 | struct peer *peer; | |
c43ed2e4 | 441 | |
d62a17ae | 442 | peer = peer_and_group_lookup_vty(vty, argv[idx_peer]->arg); |
443 | if (!peer) | |
444 | return CMD_WARNING_CONFIG_FAILED; | |
c43ed2e4 | 445 | |
21bfce98 RZ |
446 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) |
447 | bgp_group_configure_bfd(peer); | |
448 | else | |
449 | bgp_peer_configure_bfd(peer, true); | |
c43ed2e4 | 450 | |
4a0872fc RZ |
451 | bgp_peer_config_apply(peer, peer->group); |
452 | ||
d62a17ae | 453 | return CMD_SUCCESS; |
c43ed2e4 DS |
454 | } |
455 | ||
64dc4b2d RZ |
456 | #if HAVE_BFDD > 0 |
457 | DEFUN_HIDDEN( | |
458 | #else | |
459 | DEFUN( | |
460 | #endif /* HAVE_BFDD */ | |
461 | neighbor_bfd_param, | |
c43ed2e4 | 462 | neighbor_bfd_param_cmd, |
9ccf14f7 | 463 | "neighbor <A.B.C.D|X:X::X:X|WORD> bfd (2-255) (50-60000) (50-60000)", |
c43ed2e4 DS |
464 | NEIGHBOR_STR |
465 | NEIGHBOR_ADDR_STR2 | |
466 | "Enables BFD support\n" | |
467 | "Detect Multiplier\n" | |
468 | "Required min receive interval\n" | |
469 | "Desired min transmit interval\n") | |
470 | { | |
d62a17ae | 471 | int idx_peer = 1; |
472 | int idx_number_1 = 3; | |
473 | int idx_number_2 = 4; | |
474 | int idx_number_3 = 5; | |
21bfce98 | 475 | long detection_multiplier, min_rx, min_tx; |
d62a17ae | 476 | struct peer *peer; |
d62a17ae | 477 | |
478 | peer = peer_and_group_lookup_vty(vty, argv[idx_peer]->arg); | |
479 | if (!peer) | |
480 | return CMD_WARNING_CONFIG_FAILED; | |
481 | ||
21bfce98 RZ |
482 | detection_multiplier = strtol(argv[idx_number_1]->arg, NULL, 10); |
483 | min_rx = strtol(argv[idx_number_2]->arg, NULL, 10); | |
484 | min_tx = strtol(argv[idx_number_3]->arg, NULL, 10); | |
d62a17ae | 485 | |
21bfce98 RZ |
486 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) |
487 | bgp_group_configure_bfd(peer); | |
d62a17ae | 488 | else |
21bfce98 | 489 | bgp_peer_configure_bfd(peer, true); |
d62a17ae | 490 | |
21bfce98 RZ |
491 | peer->bfd_config->detection_multiplier = detection_multiplier; |
492 | peer->bfd_config->min_rx = min_rx; | |
493 | peer->bfd_config->min_tx = min_tx; | |
494 | bgp_peer_config_apply(peer, peer->group); | |
dcffea69 | 495 | |
dcffea69 PG |
496 | return CMD_SUCCESS; |
497 | } | |
498 | ||
dcffea69 PG |
499 | DEFUN (neighbor_bfd_check_controlplane_failure, |
500 | neighbor_bfd_check_controlplane_failure_cmd, | |
501 | "[no] neighbor <A.B.C.D|X:X::X:X|WORD> bfd check-control-plane-failure", | |
502 | NO_STR | |
503 | NEIGHBOR_STR | |
504 | NEIGHBOR_ADDR_STR2 | |
505 | "BFD support\n" | |
506 | "Link dataplane status with BGP controlplane\n") | |
507 | { | |
508 | const char *no = strmatch(argv[0]->text, "no") ? "no" : NULL; | |
509 | int idx_peer = 0; | |
510 | struct peer *peer; | |
dcffea69 PG |
511 | |
512 | if (no) | |
513 | idx_peer = 2; | |
514 | else | |
515 | idx_peer = 1; | |
516 | peer = peer_and_group_lookup_vty(vty, argv[idx_peer]->arg); | |
517 | if (!peer) { | |
518 | vty_out(vty, "%% Specify remote-as or peer-group commands first\n"); | |
519 | return CMD_WARNING_CONFIG_FAILED; | |
520 | } | |
21bfce98 RZ |
521 | |
522 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) | |
523 | bgp_group_configure_bfd(peer); | |
524 | else | |
525 | bgp_peer_configure_bfd(peer, true); | |
526 | ||
527 | peer->bfd_config->cbit = no == NULL; | |
528 | bgp_peer_config_apply(peer, peer->group); | |
529 | ||
530 | return CMD_SUCCESS; | |
dcffea69 PG |
531 | } |
532 | ||
c43ed2e4 DS |
533 | DEFUN (no_neighbor_bfd, |
534 | no_neighbor_bfd_cmd, | |
64dc4b2d RZ |
535 | #if HAVE_BFDD > 0 |
536 | "no neighbor <A.B.C.D|X:X::X:X|WORD> bfd", | |
537 | #else | |
5bf15956 | 538 | "no neighbor <A.B.C.D|X:X::X:X|WORD> bfd [(2-255) (50-60000) (50-60000)]", |
64dc4b2d | 539 | #endif /* HAVE_BFDD */ |
c43ed2e4 DS |
540 | NO_STR |
541 | NEIGHBOR_STR | |
542 | NEIGHBOR_ADDR_STR2 | |
5bf15956 | 543 | "Disables BFD support\n" |
64dc4b2d | 544 | #if HAVE_BFDD == 0 |
5bf15956 DW |
545 | "Detect Multiplier\n" |
546 | "Required min receive interval\n" | |
64dc4b2d RZ |
547 | "Desired min transmit interval\n" |
548 | #endif /* !HAVE_BFDD */ | |
549 | ) | |
c43ed2e4 | 550 | { |
d62a17ae | 551 | int idx_peer = 2; |
552 | struct peer *peer; | |
c43ed2e4 | 553 | |
d62a17ae | 554 | peer = peer_and_group_lookup_vty(vty, argv[idx_peer]->arg); |
555 | if (!peer) | |
556 | return CMD_WARNING_CONFIG_FAILED; | |
c43ed2e4 | 557 | |
21bfce98 RZ |
558 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) |
559 | bgp_group_remove_bfd(peer); | |
560 | else | |
561 | bgp_peer_remove_bfd(peer); | |
986aa00f | 562 | |
d62a17ae | 563 | return CMD_SUCCESS; |
986aa00f | 564 | } |
565 | ||
02012bef RZ |
566 | #if HAVE_BFDD > 0 |
567 | DEFUN(neighbor_bfd_profile, neighbor_bfd_profile_cmd, | |
568 | "neighbor <A.B.C.D|X:X::X:X|WORD> bfd profile BFDPROF", | |
569 | NEIGHBOR_STR | |
570 | NEIGHBOR_ADDR_STR2 | |
571 | "BFD integration\n" | |
572 | BFD_PROFILE_STR | |
573 | BFD_PROFILE_NAME_STR) | |
574 | { | |
575 | int idx_peer = 1, idx_prof = 4; | |
576 | struct peer *peer; | |
02012bef RZ |
577 | |
578 | peer = peer_and_group_lookup_vty(vty, argv[idx_peer]->arg); | |
579 | if (!peer) | |
580 | return CMD_WARNING_CONFIG_FAILED; | |
581 | ||
21bfce98 RZ |
582 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) |
583 | bgp_group_configure_bfd(peer); | |
584 | else | |
585 | bgp_peer_configure_bfd(peer, true); | |
586 | ||
587 | strlcpy(peer->bfd_config->profile, argv[idx_prof]->arg, | |
588 | sizeof(peer->bfd_config->profile)); | |
589 | bgp_peer_config_apply(peer, peer->group); | |
02012bef RZ |
590 | |
591 | return CMD_SUCCESS; | |
592 | } | |
593 | ||
594 | DEFUN(no_neighbor_bfd_profile, no_neighbor_bfd_profile_cmd, | |
595 | "no neighbor <A.B.C.D|X:X::X:X|WORD> bfd profile [BFDPROF]", | |
596 | NO_STR | |
597 | NEIGHBOR_STR | |
598 | NEIGHBOR_ADDR_STR2 | |
599 | "BFD integration\n" | |
600 | BFD_PROFILE_STR | |
601 | BFD_PROFILE_NAME_STR) | |
602 | { | |
603 | int idx_peer = 2; | |
604 | struct peer *peer; | |
02012bef RZ |
605 | |
606 | peer = peer_and_group_lookup_vty(vty, argv[idx_peer]->arg); | |
607 | if (!peer) | |
608 | return CMD_WARNING_CONFIG_FAILED; | |
609 | ||
21bfce98 RZ |
610 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) |
611 | bgp_group_configure_bfd(peer); | |
612 | else | |
613 | bgp_peer_configure_bfd(peer, true); | |
02012bef | 614 | |
21bfce98 RZ |
615 | peer->bfd_config->profile[0] = 0; |
616 | bgp_peer_config_apply(peer, peer->group); | |
02012bef RZ |
617 | |
618 | return CMD_SUCCESS; | |
619 | } | |
620 | #endif /* HAVE_BFDD */ | |
621 | ||
21bfce98 | 622 | void bgp_bfd_init(struct thread_master *tm) |
c43ed2e4 | 623 | { |
d62a17ae | 624 | /* Initialize BFD client functions */ |
21bfce98 | 625 | bfd_protocol_integration_init(zclient, tm); |
d62a17ae | 626 | |
627 | /* "neighbor bfd" commands. */ | |
628 | install_element(BGP_NODE, &neighbor_bfd_cmd); | |
629 | install_element(BGP_NODE, &neighbor_bfd_param_cmd); | |
dcffea69 | 630 | install_element(BGP_NODE, &neighbor_bfd_check_controlplane_failure_cmd); |
d62a17ae | 631 | install_element(BGP_NODE, &no_neighbor_bfd_cmd); |
02012bef RZ |
632 | |
633 | #if HAVE_BFDD > 0 | |
634 | install_element(BGP_NODE, &neighbor_bfd_profile_cmd); | |
635 | install_element(BGP_NODE, &no_neighbor_bfd_profile_cmd); | |
636 | #endif /* HAVE_BFDD */ | |
c43ed2e4 | 637 | } |