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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
718e3744 | 2 | /* |
3 | * OSPF Interface functions. | |
4 | * Copyright (C) 1999, 2000 Toshiaki Takada | |
718e3744 | 5 | */ |
6 | ||
7 | #include <zebra.h> | |
8 | ||
24a58196 | 9 | #include "frrevent.h" |
718e3744 | 10 | #include "linklist.h" |
11 | #include "prefix.h" | |
12 | #include "if.h" | |
13 | #include "table.h" | |
14 | #include "memory.h" | |
15 | #include "command.h" | |
16 | #include "stream.h" | |
17 | #include "log.h" | |
fce7f209 | 18 | #include "network.h" |
c0325cfa | 19 | #include "zclient.h" |
7f342629 | 20 | #include "bfd.h" |
132a782e | 21 | #include "ldp_sync.h" |
718e3744 | 22 | |
68980084 | 23 | #include "ospfd/ospfd.h" |
659f4e40 | 24 | #include "ospfd/ospf_bfd.h" |
718e3744 | 25 | #include "ospfd/ospf_spf.h" |
26 | #include "ospfd/ospf_interface.h" | |
27 | #include "ospfd/ospf_ism.h" | |
28 | #include "ospfd/ospf_asbr.h" | |
29 | #include "ospfd/ospf_lsa.h" | |
30 | #include "ospfd/ospf_lsdb.h" | |
31 | #include "ospfd/ospf_neighbor.h" | |
32 | #include "ospfd/ospf_nsm.h" | |
33 | #include "ospfd/ospf_packet.h" | |
34 | #include "ospfd/ospf_abr.h" | |
718e3744 | 35 | #include "ospfd/ospf_network.h" |
36 | #include "ospfd/ospf_dump.h" | |
132a782e | 37 | #include "ospfd/ospf_ldp_sync.h" |
effee187 | 38 | #include "ospfd/ospf_route.h" |
0b4124c1 | 39 | #include "ospfd/ospf_te.h" |
718e3744 | 40 | |
96244aca | 41 | DEFINE_QOBJ_TYPE(ospf_interface); |
8451921b DL |
42 | DEFINE_HOOK(ospf_vl_add, (struct ospf_vl_data * vd), (vd)); |
43 | DEFINE_HOOK(ospf_vl_delete, (struct ospf_vl_data * vd), (vd)); | |
44 | DEFINE_HOOK(ospf_if_update, (struct interface * ifp), (ifp)); | |
45 | DEFINE_HOOK(ospf_if_delete, (struct interface * ifp), (ifp)); | |
6b0655a2 | 46 | |
2bc7673f CS |
47 | int ospf_interface_neighbor_count(struct ospf_interface *oi) |
48 | { | |
49 | int count = 0; | |
50 | struct route_node *rn; | |
51 | struct ospf_neighbor *nbr = NULL; | |
52 | ||
53 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) { | |
54 | nbr = rn->info; | |
fe61ceae DS |
55 | if (!nbr) |
56 | continue; | |
57 | ||
58 | /* Do not show myself. */ | |
59 | if (nbr == oi->nbr_self) | |
60 | continue; | |
61 | /* Down state is not shown. */ | |
62 | if (nbr->state == NSM_Down) | |
63 | continue; | |
64 | count++; | |
2bc7673f CS |
65 | } |
66 | ||
67 | return count; | |
68 | } | |
69 | ||
d62a17ae | 70 | int ospf_if_get_output_cost(struct ospf_interface *oi) |
718e3744 | 71 | { |
d62a17ae | 72 | /* If all else fails, use default OSPF cost */ |
d7c0a89a QY |
73 | uint32_t cost; |
74 | uint32_t bw, refbw; | |
d62a17ae | 75 | |
132a782e | 76 | /* if LDP-IGP Sync is running on interface set cost so interface |
77 | * is used only as last resort | |
78 | */ | |
79 | if (ldp_sync_if_is_enabled(IF_DEF_PARAMS(oi->ifp)->ldp_sync_info)) | |
80 | return (LDP_OSPF_LSINFINITY); | |
81 | ||
d62a17ae | 82 | /* ifp speed and bw can be 0 in some platforms, use ospf default bw |
83 | if bw is configured under interface it would be used. | |
84 | */ | |
85 | if (!oi->ifp->bandwidth && oi->ifp->speed) | |
86 | bw = oi->ifp->speed; | |
87 | else | |
88 | bw = oi->ifp->bandwidth ? oi->ifp->bandwidth | |
89 | : OSPF_DEFAULT_BANDWIDTH; | |
90 | refbw = oi->ospf->ref_bandwidth; | |
91 | ||
bd4f51b1 | 92 | /* A specified ip ospf cost overrides a calculated one. */ |
d62a17ae | 93 | if (OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS(oi->ifp), output_cost_cmd) |
94 | || OSPF_IF_PARAM_CONFIGURED(oi->params, output_cost_cmd)) | |
95 | cost = OSPF_IF_PARAM(oi, output_cost_cmd); | |
96 | /* See if a cost can be calculated from the zebra processes | |
97 | interface bandwidth field. */ | |
98 | else { | |
d7c0a89a | 99 | cost = (uint32_t)((double)refbw / (double)bw + (double)0.5); |
d62a17ae | 100 | if (cost < 1) |
101 | cost = 1; | |
102 | else if (cost > 65535) | |
103 | cost = 65535; | |
104 | } | |
105 | ||
106 | return cost; | |
718e3744 | 107 | } |
108 | ||
d62a17ae | 109 | void ospf_if_recalculate_output_cost(struct interface *ifp) |
718e3744 | 110 | { |
d7c0a89a | 111 | uint32_t newcost; |
d62a17ae | 112 | struct route_node *rn; |
113 | ||
114 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
115 | struct ospf_interface *oi; | |
116 | ||
117 | if ((oi = rn->info) == NULL) | |
118 | continue; | |
119 | ||
120 | newcost = ospf_if_get_output_cost(oi); | |
121 | ||
122 | /* Is actual output cost changed? */ | |
123 | if (oi->output_cost != newcost) { | |
124 | oi->output_cost = newcost; | |
125 | ospf_router_lsa_update_area(oi->area); | |
126 | } | |
718e3744 | 127 | } |
718e3744 | 128 | } |
129 | ||
d62a17ae | 130 | /* Simulate down/up on the interface. This is needed, for example, when |
a608bbf2 | 131 | the MTU changes. */ |
d62a17ae | 132 | void ospf_if_reset(struct interface *ifp) |
a608bbf2 | 133 | { |
d62a17ae | 134 | struct route_node *rn; |
135 | ||
136 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
137 | struct ospf_interface *oi; | |
138 | ||
139 | if ((oi = rn->info) == NULL) | |
140 | continue; | |
141 | ||
142 | ospf_if_down(oi); | |
143 | ospf_if_up(oi); | |
144 | } | |
a608bbf2 | 145 | } |
146 | ||
d62a17ae | 147 | void ospf_if_reset_variables(struct ospf_interface *oi) |
718e3744 | 148 | { |
d62a17ae | 149 | /* Set default values. */ |
150 | /* don't clear this flag. oi->flag = OSPF_IF_DISABLE; */ | |
718e3744 | 151 | |
d62a17ae | 152 | if (oi->vl_data) |
153 | oi->type = OSPF_IFTYPE_VIRTUALLINK; | |
154 | else | |
155 | /* preserve network-type */ | |
156 | if (oi->type != OSPF_IFTYPE_NBMA) | |
157 | oi->type = OSPF_IFTYPE_BROADCAST; | |
718e3744 | 158 | |
d62a17ae | 159 | oi->state = ISM_Down; |
718e3744 | 160 | |
d62a17ae | 161 | oi->crypt_seqnum = 0; |
718e3744 | 162 | |
d62a17ae | 163 | /* This must be short, (less than RxmtInterval) |
164 | - RFC 2328 Section 13.5 para 3. Set to 1 second to avoid Acks being | |
165 | held back for too long - MAG */ | |
166 | oi->v_ls_ack = 1; | |
718e3744 | 167 | } |
168 | ||
20916fba | 169 | /* lookup oi for specified prefix/ifp */ |
d62a17ae | 170 | struct ospf_interface *ospf_if_table_lookup(struct interface *ifp, |
171 | struct prefix *prefix) | |
20916fba | 172 | { |
d62a17ae | 173 | struct prefix p; |
174 | struct route_node *rn; | |
175 | struct ospf_interface *rninfo = NULL; | |
176 | ||
177 | p = *prefix; | |
936fbaef | 178 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 179 | |
180 | /* route_node_get implicitely locks */ | |
181 | if ((rn = route_node_lookup(IF_OIFS(ifp), &p))) { | |
182 | rninfo = (struct ospf_interface *)rn->info; | |
183 | route_unlock_node(rn); | |
184 | } | |
185 | ||
186 | return rninfo; | |
20916fba | 187 | } |
188 | ||
d62a17ae | 189 | static void ospf_add_to_if(struct interface *ifp, struct ospf_interface *oi) |
718e3744 | 190 | { |
d62a17ae | 191 | struct route_node *rn; |
192 | struct prefix p; | |
193 | ||
194 | p = *oi->address; | |
936fbaef | 195 | p.prefixlen = IPV4_MAX_BITLEN; |
a6435618 | 196 | apply_mask(&p); |
d62a17ae | 197 | |
198 | rn = route_node_get(IF_OIFS(ifp), &p); | |
199 | /* rn->info should either be NULL or equal to this oi | |
200 | * as route_node_get may return an existing node | |
201 | */ | |
202 | assert(!rn->info || rn->info == oi); | |
203 | rn->info = oi; | |
718e3744 | 204 | } |
205 | ||
d62a17ae | 206 | static void ospf_delete_from_if(struct interface *ifp, |
207 | struct ospf_interface *oi) | |
718e3744 | 208 | { |
d62a17ae | 209 | struct route_node *rn; |
210 | struct prefix p; | |
211 | ||
212 | p = *oi->address; | |
936fbaef | 213 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 214 | |
215 | rn = route_node_lookup(IF_OIFS(oi->ifp), &p); | |
216 | assert(rn); | |
217 | assert(rn->info); | |
218 | rn->info = NULL; | |
219 | route_unlock_node(rn); | |
220 | route_unlock_node(rn); | |
718e3744 | 221 | } |
222 | ||
d62a17ae | 223 | struct ospf_interface *ospf_if_new(struct ospf *ospf, struct interface *ifp, |
224 | struct prefix *p) | |
718e3744 | 225 | { |
d62a17ae | 226 | struct ospf_interface *oi; |
227 | ||
36a106e0 DS |
228 | oi = ospf_if_table_lookup(ifp, p); |
229 | if (oi) | |
d62a17ae | 230 | return oi; |
231 | ||
36a106e0 DS |
232 | oi = XCALLOC(MTYPE_OSPF_IF, sizeof(struct ospf_interface)); |
233 | ||
234 | oi->obuf = ospf_fifo_new(); | |
235 | ||
d62a17ae | 236 | /* Set zebra interface pointer. */ |
237 | oi->ifp = ifp; | |
238 | oi->address = p; | |
239 | ||
240 | ospf_add_to_if(ifp, oi); | |
241 | listnode_add(ospf->oiflist, oi); | |
242 | ||
243 | /* Initialize neighbor list. */ | |
244 | oi->nbrs = route_table_init(); | |
245 | ||
246 | /* Initialize static neighbor list. */ | |
247 | oi->nbr_nbma = list_new(); | |
248 | ||
249 | /* Initialize Link State Acknowledgment list. */ | |
250 | oi->ls_ack = list_new(); | |
251 | oi->ls_ack_direct.ls_ack = list_new(); | |
252 | ||
253 | /* Set default values. */ | |
254 | ospf_if_reset_variables(oi); | |
255 | ||
256 | /* Set pseudo neighbor to Null */ | |
257 | oi->nbr_self = NULL; | |
258 | ||
259 | oi->ls_upd_queue = route_table_init(); | |
260 | oi->t_ls_upd_event = NULL; | |
261 | oi->t_ls_ack_direct = NULL; | |
262 | ||
fce7f209 | 263 | oi->crypt_seqnum = frr_sequence32_next(); |
d62a17ae | 264 | |
265 | ospf_opaque_type9_lsa_init(oi); | |
266 | ||
267 | oi->ospf = ospf; | |
4fc8a852 | 268 | |
d62a17ae | 269 | QOBJ_REG(oi, ospf_interface); |
270 | ||
b5a8894d CS |
271 | if (IS_DEBUG_OSPF_EVENT) |
272 | zlog_debug("%s: ospf interface %s vrf %s id %u created", | |
15569c58 DA |
273 | __func__, ifp->name, ospf_get_name(ospf), |
274 | ospf->vrf_id); | |
b5a8894d | 275 | |
d62a17ae | 276 | return oi; |
718e3744 | 277 | } |
278 | ||
279 | /* Restore an interface to its pre UP state | |
280 | Used from ism_interface_down only */ | |
d62a17ae | 281 | void ospf_if_cleanup(struct ospf_interface *oi) |
718e3744 | 282 | { |
d62a17ae | 283 | struct route_node *rn; |
284 | struct listnode *node, *nnode; | |
285 | struct ospf_neighbor *nbr; | |
286 | struct ospf_nbr_nbma *nbr_nbma; | |
287 | struct ospf_lsa *lsa; | |
288 | ||
289 | /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */ | |
290 | /* delete all static neighbors attached to this interface */ | |
291 | for (ALL_LIST_ELEMENTS(oi->nbr_nbma, node, nnode, nbr_nbma)) { | |
e16d030c | 292 | EVENT_OFF(nbr_nbma->t_poll); |
d62a17ae | 293 | |
294 | if (nbr_nbma->nbr) { | |
295 | nbr_nbma->nbr->nbr_nbma = NULL; | |
296 | nbr_nbma->nbr = NULL; | |
297 | } | |
298 | ||
299 | nbr_nbma->oi = NULL; | |
300 | ||
301 | listnode_delete(oi->nbr_nbma, nbr_nbma); | |
718e3744 | 302 | } |
303 | ||
d62a17ae | 304 | /* send Neighbor event KillNbr to all associated neighbors. */ |
fe61ceae | 305 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) { |
d62a17ae | 306 | if ((nbr = rn->info) != NULL) |
307 | if (nbr != oi->nbr_self) | |
308 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
fe61ceae | 309 | } |
d62a17ae | 310 | |
311 | /* Cleanup Link State Acknowlegdment list. */ | |
312 | for (ALL_LIST_ELEMENTS(oi->ls_ack, node, nnode, lsa)) | |
313 | ospf_lsa_unlock(&lsa); /* oi->ls_ack */ | |
314 | list_delete_all_node(oi->ls_ack); | |
315 | ||
316 | oi->crypt_seqnum = 0; | |
317 | ||
318 | /* Empty link state update queue */ | |
319 | ospf_ls_upd_queue_empty(oi); | |
320 | ||
321 | /* Reset pseudo neighbor. */ | |
322 | ospf_nbr_self_reset(oi, oi->ospf->router_id); | |
718e3744 | 323 | } |
324 | ||
d62a17ae | 325 | void ospf_if_free(struct ospf_interface *oi) |
718e3744 | 326 | { |
d62a17ae | 327 | ospf_if_down(oi); |
328 | ||
36a106e0 | 329 | ospf_fifo_free(oi->obuf); |
4fc8a852 | 330 | |
d62a17ae | 331 | assert(oi->state == ISM_Down); |
332 | ||
333 | ospf_opaque_type9_lsa_term(oi); | |
334 | ||
335 | QOBJ_UNREG(oi); | |
336 | ||
337 | /* Free Pseudo Neighbour */ | |
338 | ospf_nbr_delete(oi->nbr_self); | |
718e3744 | 339 | |
d62a17ae | 340 | route_table_finish(oi->nbrs); |
341 | route_table_finish(oi->ls_upd_queue); | |
718e3744 | 342 | |
d62a17ae | 343 | /* Free any lists that should be freed */ |
6a154c88 | 344 | list_delete(&oi->nbr_nbma); |
718e3744 | 345 | |
6a154c88 DL |
346 | list_delete(&oi->ls_ack); |
347 | list_delete(&oi->ls_ack_direct.ls_ack); | |
ae19c240 | 348 | |
b5a8894d CS |
349 | if (IS_DEBUG_OSPF_EVENT) |
350 | zlog_debug("%s: ospf interface %s vrf %s id %u deleted", | |
096f7609 IR |
351 | __func__, oi->ifp->name, oi->ifp->vrf->name, |
352 | oi->ifp->vrf->vrf_id); | |
b5a8894d | 353 | |
d62a17ae | 354 | ospf_delete_from_if(oi->ifp, oi); |
718e3744 | 355 | |
d62a17ae | 356 | listnode_delete(oi->ospf->oiflist, oi); |
357 | listnode_delete(oi->area->oiflist, oi); | |
718e3744 | 358 | |
332beb64 | 359 | event_cancel_event(master, oi); |
cfd670f3 | 360 | |
d62a17ae | 361 | memset(oi, 0, sizeof(*oi)); |
362 | XFREE(MTYPE_OSPF_IF, oi); | |
718e3744 | 363 | } |
364 | ||
d62a17ae | 365 | int ospf_if_is_up(struct ospf_interface *oi) |
718e3744 | 366 | { |
d62a17ae | 367 | return if_is_up(oi->ifp); |
718e3744 | 368 | } |
369 | ||
d62a17ae | 370 | struct ospf_interface *ospf_if_exists(struct ospf_interface *oic) |
371 | { | |
372 | struct listnode *node; | |
373 | struct ospf *ospf; | |
374 | struct ospf_interface *oi; | |
2db3d05d | 375 | |
b5a8894d CS |
376 | if (!oic) |
377 | return NULL; | |
378 | ||
379 | ospf = oic->ospf; | |
380 | if (ospf == NULL) | |
d62a17ae | 381 | return NULL; |
2db3d05d | 382 | |
d62a17ae | 383 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) |
384 | if (oi == oic) | |
385 | return oi; | |
1eb8ef25 | 386 | |
d62a17ae | 387 | return NULL; |
2db3d05d | 388 | } |
389 | ||
c81ee5c9 | 390 | /* Lookup OSPF interface by router LSA posistion */ |
d62a17ae | 391 | struct ospf_interface *ospf_if_lookup_by_lsa_pos(struct ospf_area *area, |
392 | int lsa_pos) | |
c81ee5c9 | 393 | { |
d62a17ae | 394 | struct listnode *node; |
395 | struct ospf_interface *oi; | |
c81ee5c9 | 396 | |
d62a17ae | 397 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) { |
398 | if (lsa_pos >= oi->lsa_pos_beg && lsa_pos < oi->lsa_pos_end) | |
399 | return oi; | |
400 | } | |
401 | return NULL; | |
c81ee5c9 JT |
402 | } |
403 | ||
d62a17ae | 404 | struct ospf_interface *ospf_if_lookup_by_local_addr(struct ospf *ospf, |
405 | struct interface *ifp, | |
406 | struct in_addr address) | |
718e3744 | 407 | { |
d62a17ae | 408 | struct listnode *node; |
409 | struct ospf_interface *oi; | |
410 | ||
411 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) | |
412 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
413 | if (ifp && oi->ifp != ifp) | |
414 | continue; | |
415 | ||
416 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
417 | return oi; | |
418 | } | |
419 | ||
420 | return NULL; | |
718e3744 | 421 | } |
422 | ||
d62a17ae | 423 | struct ospf_interface *ospf_if_lookup_by_prefix(struct ospf *ospf, |
424 | struct prefix_ipv4 *p) | |
718e3744 | 425 | { |
d62a17ae | 426 | struct listnode *node; |
427 | struct ospf_interface *oi; | |
428 | ||
429 | /* Check each Interface. */ | |
430 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
431 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
432 | struct prefix ptmp; | |
433 | ||
434 | prefix_copy(&ptmp, CONNECTED_PREFIX(oi->connected)); | |
435 | apply_mask(&ptmp); | |
436 | if (prefix_same(&ptmp, (struct prefix *)p)) | |
437 | return oi; | |
438 | } | |
68980084 | 439 | } |
d62a17ae | 440 | return NULL; |
718e3744 | 441 | } |
442 | ||
05cf46ba | 443 | /* determine receiving interface by ifp and source address */ |
d62a17ae | 444 | struct ospf_interface *ospf_if_lookup_recv_if(struct ospf *ospf, |
445 | struct in_addr src, | |
446 | struct interface *ifp) | |
718e3744 | 447 | { |
d62a17ae | 448 | struct route_node *rn; |
449 | struct prefix_ipv4 addr; | |
5136e672 | 450 | struct ospf_interface *oi, *match, *unnumbered_match; |
d62a17ae | 451 | |
452 | addr.family = AF_INET; | |
453 | addr.prefix = src; | |
454 | addr.prefixlen = IPV4_MAX_BITLEN; | |
455 | ||
5136e672 | 456 | match = unnumbered_match = NULL; |
d62a17ae | 457 | |
458 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
459 | oi = rn->info; | |
460 | ||
461 | if (!oi) /* oi can be NULL for PtP aliases */ | |
462 | continue; | |
463 | ||
464 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
465 | continue; | |
466 | ||
608c8870 | 467 | if (if_is_loopback(oi->ifp)) |
d62a17ae | 468 | continue; |
469 | ||
470 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
5136e672 | 471 | unnumbered_match = oi; |
d62a17ae | 472 | else if (prefix_match(CONNECTED_PREFIX(oi->connected), |
473 | (struct prefix *)&addr)) { | |
9d303b37 DL |
474 | if ((match == NULL) || (match->address->prefixlen |
475 | < oi->address->prefixlen)) | |
d62a17ae | 476 | match = oi; |
477 | } | |
718e3744 | 478 | } |
718e3744 | 479 | |
5136e672 DS |
480 | if (match) |
481 | return match; | |
482 | ||
483 | return unnumbered_match; | |
718e3744 | 484 | } |
6b0655a2 | 485 | |
fb617d18 DS |
486 | void ospf_interface_fifo_flush(struct ospf_interface *oi) |
487 | { | |
488 | struct ospf *ospf = oi->ospf; | |
489 | ||
490 | ospf_fifo_flush(oi->obuf); | |
491 | ||
492 | if (oi->on_write_q) { | |
493 | listnode_delete(ospf->oi_write_q, oi); | |
494 | if (list_isempty(ospf->oi_write_q)) | |
e16d030c | 495 | EVENT_OFF(ospf->t_write); |
fb617d18 DS |
496 | oi->on_write_q = 0; |
497 | } | |
498 | } | |
499 | ||
85c8ef06 CS |
500 | static void ospf_if_reset_stats(struct ospf_interface *oi) |
501 | { | |
502 | oi->hello_in = oi->hello_out = 0; | |
503 | oi->db_desc_in = oi->db_desc_out = 0; | |
504 | oi->ls_req_in = oi->ls_req_out = 0; | |
505 | oi->ls_upd_in = oi->ls_upd_out = 0; | |
506 | oi->ls_ack_in = oi->ls_ack_out = 0; | |
507 | } | |
508 | ||
d62a17ae | 509 | void ospf_if_stream_unset(struct ospf_interface *oi) |
718e3744 | 510 | { |
36a106e0 | 511 | /* flush the interface packet queue */ |
fb617d18 | 512 | ospf_interface_fifo_flush(oi); |
36a106e0 DS |
513 | /*reset protocol stats */ |
514 | ospf_if_reset_stats(oi); | |
718e3744 | 515 | } |
68980084 | 516 | |
6b0655a2 | 517 | |
d62a17ae | 518 | static struct ospf_if_params *ospf_new_if_params(void) |
718e3744 | 519 | { |
d62a17ae | 520 | struct ospf_if_params *oip; |
521 | ||
522 | oip = XCALLOC(MTYPE_OSPF_IF_PARAMS, sizeof(struct ospf_if_params)); | |
523 | ||
d62a17ae | 524 | UNSET_IF_PARAM(oip, output_cost_cmd); |
525 | UNSET_IF_PARAM(oip, transmit_delay); | |
526 | UNSET_IF_PARAM(oip, retransmit_interval); | |
527 | UNSET_IF_PARAM(oip, passive_interface); | |
528 | UNSET_IF_PARAM(oip, v_hello); | |
529 | UNSET_IF_PARAM(oip, fast_hello); | |
530 | UNSET_IF_PARAM(oip, v_wait); | |
531 | UNSET_IF_PARAM(oip, priority); | |
532 | UNSET_IF_PARAM(oip, type); | |
533 | UNSET_IF_PARAM(oip, auth_simple); | |
534 | UNSET_IF_PARAM(oip, auth_crypt); | |
535 | UNSET_IF_PARAM(oip, auth_type); | |
bf617538 | 536 | UNSET_IF_PARAM(oip, if_area); |
d62a17ae | 537 | |
538 | oip->auth_crypt = list_new(); | |
539 | ||
540 | oip->network_lsa_seqnum = htonl(OSPF_INITIAL_SEQUENCE_NUMBER); | |
182d6bdc | 541 | oip->is_v_wait_set = false; |
d62a17ae | 542 | |
bc97889b AL |
543 | oip->ptp_dmvpn = 0; |
544 | ||
d62a17ae | 545 | return oip; |
718e3744 | 546 | } |
547 | ||
659f4e40 RZ |
548 | static void ospf_del_if_params(struct interface *ifp, |
549 | struct ospf_if_params *oip) | |
718e3744 | 550 | { |
6a154c88 | 551 | list_delete(&oip->auth_crypt); |
659f4e40 | 552 | ospf_interface_disable_bfd(ifp, oip); |
132a782e | 553 | ldp_sync_info_free(&(oip->ldp_sync_info)); |
d62a17ae | 554 | XFREE(MTYPE_OSPF_IF_PARAMS, oip); |
718e3744 | 555 | } |
556 | ||
d62a17ae | 557 | void ospf_free_if_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 558 | { |
d62a17ae | 559 | struct ospf_if_params *oip; |
560 | struct prefix_ipv4 p; | |
561 | struct route_node *rn; | |
562 | ||
563 | p.family = AF_INET; | |
936fbaef | 564 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 565 | p.prefix = addr; |
566 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
567 | if (!rn || !rn->info) | |
568 | return; | |
569 | ||
570 | oip = rn->info; | |
571 | route_unlock_node(rn); | |
572 | ||
573 | if (!OSPF_IF_PARAM_CONFIGURED(oip, output_cost_cmd) | |
574 | && !OSPF_IF_PARAM_CONFIGURED(oip, transmit_delay) | |
575 | && !OSPF_IF_PARAM_CONFIGURED(oip, retransmit_interval) | |
576 | && !OSPF_IF_PARAM_CONFIGURED(oip, passive_interface) | |
577 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_hello) | |
578 | && !OSPF_IF_PARAM_CONFIGURED(oip, fast_hello) | |
579 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_wait) | |
580 | && !OSPF_IF_PARAM_CONFIGURED(oip, priority) | |
581 | && !OSPF_IF_PARAM_CONFIGURED(oip, type) | |
582 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_simple) | |
583 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_type) | |
bf617538 | 584 | && !OSPF_IF_PARAM_CONFIGURED(oip, if_area) |
2917d36b | 585 | && listcount(oip->auth_crypt) == 0) { |
659f4e40 | 586 | ospf_del_if_params(ifp, oip); |
d62a17ae | 587 | rn->info = NULL; |
588 | route_unlock_node(rn); | |
589 | } | |
718e3744 | 590 | } |
591 | ||
d62a17ae | 592 | struct ospf_if_params *ospf_lookup_if_params(struct interface *ifp, |
593 | struct in_addr addr) | |
718e3744 | 594 | { |
d62a17ae | 595 | struct prefix_ipv4 p; |
596 | struct route_node *rn; | |
597 | ||
598 | p.family = AF_INET; | |
936fbaef | 599 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 600 | p.prefix = addr; |
601 | ||
602 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
603 | ||
604 | if (rn) { | |
605 | route_unlock_node(rn); | |
606 | return rn->info; | |
607 | } | |
608 | ||
609 | return NULL; | |
718e3744 | 610 | } |
611 | ||
d62a17ae | 612 | struct ospf_if_params *ospf_get_if_params(struct interface *ifp, |
613 | struct in_addr addr) | |
718e3744 | 614 | { |
d62a17ae | 615 | struct prefix_ipv4 p; |
616 | struct route_node *rn; | |
617 | ||
618 | p.family = AF_INET; | |
936fbaef | 619 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 620 | p.prefix = addr; |
a6435618 | 621 | apply_mask_ipv4(&p); |
d62a17ae | 622 | |
623 | rn = route_node_get(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
624 | ||
625 | if (rn->info == NULL) | |
626 | rn->info = ospf_new_if_params(); | |
627 | else | |
628 | route_unlock_node(rn); | |
629 | ||
630 | return rn->info; | |
718e3744 | 631 | } |
632 | ||
d62a17ae | 633 | void ospf_if_update_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 634 | { |
d62a17ae | 635 | struct route_node *rn; |
636 | struct ospf_interface *oi; | |
637 | ||
638 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
639 | if ((oi = rn->info) == NULL) | |
640 | continue; | |
641 | ||
642 | if (IPV4_ADDR_SAME(&oi->address->u.prefix4, &addr)) | |
643 | oi->params = ospf_lookup_if_params( | |
644 | ifp, oi->address->u.prefix4); | |
645 | } | |
718e3744 | 646 | } |
647 | ||
d62a17ae | 648 | int ospf_if_new_hook(struct interface *ifp) |
718e3744 | 649 | { |
d62a17ae | 650 | int rc = 0; |
651 | ||
652 | ifp->info = XCALLOC(MTYPE_OSPF_IF_INFO, sizeof(struct ospf_if_info)); | |
653 | ||
04a0401f MS |
654 | IF_OSPF_IF_INFO(ifp)->oii_fd = -1; |
655 | ||
d62a17ae | 656 | IF_OIFS(ifp) = route_table_init(); |
657 | IF_OIFS_PARAMS(ifp) = route_table_init(); | |
658 | ||
659 | IF_DEF_PARAMS(ifp) = ospf_new_if_params(); | |
660 | ||
661 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), transmit_delay); | |
662 | IF_DEF_PARAMS(ifp)->transmit_delay = OSPF_TRANSMIT_DELAY_DEFAULT; | |
663 | ||
664 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), retransmit_interval); | |
665 | IF_DEF_PARAMS(ifp)->retransmit_interval = | |
666 | OSPF_RETRANSMIT_INTERVAL_DEFAULT; | |
667 | ||
668 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), priority); | |
669 | IF_DEF_PARAMS(ifp)->priority = OSPF_ROUTER_PRIORITY_DEFAULT; | |
670 | ||
671 | IF_DEF_PARAMS(ifp)->mtu_ignore = OSPF_MTU_IGNORE_DEFAULT; | |
672 | ||
673 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_hello); | |
674 | IF_DEF_PARAMS(ifp)->v_hello = OSPF_HELLO_INTERVAL_DEFAULT; | |
675 | ||
676 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), fast_hello); | |
677 | IF_DEF_PARAMS(ifp)->fast_hello = OSPF_FAST_HELLO_DEFAULT; | |
678 | ||
679 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_wait); | |
680 | IF_DEF_PARAMS(ifp)->v_wait = OSPF_ROUTER_DEAD_INTERVAL_DEFAULT; | |
681 | ||
682 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_simple); | |
683 | memset(IF_DEF_PARAMS(ifp)->auth_simple, 0, OSPF_AUTH_SIMPLE_SIZE); | |
684 | ||
685 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_type); | |
686 | IF_DEF_PARAMS(ifp)->auth_type = OSPF_AUTH_NOTSET; | |
687 | ||
688 | rc = ospf_opaque_new_if(ifp); | |
689 | return rc; | |
718e3744 | 690 | } |
691 | ||
d62a17ae | 692 | static int ospf_if_delete_hook(struct interface *ifp) |
718e3744 | 693 | { |
d62a17ae | 694 | int rc = 0; |
695 | struct route_node *rn; | |
04a0401f MS |
696 | struct ospf_if_info *oii; |
697 | ||
d62a17ae | 698 | rc = ospf_opaque_del_if(ifp); |
940b01aa | 699 | |
e2134a79 RZ |
700 | /* |
701 | * This function must be called before `route_table_finish` due to | |
702 | * BFD integration need to iterate over the interface neighbors to | |
703 | * remove all registrations. | |
704 | */ | |
705 | ospf_del_if_params(ifp, IF_DEF_PARAMS(ifp)); | |
706 | ||
d62a17ae | 707 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) |
708 | if (rn->info) | |
659f4e40 | 709 | ospf_del_if_params(ifp, rn->info); |
9ffde6e1 DS |
710 | |
711 | route_table_finish(IF_OIFS(ifp)); | |
d62a17ae | 712 | route_table_finish(IF_OIFS_PARAMS(ifp)); |
940b01aa | 713 | |
04a0401f MS |
714 | /* Close per-interface socket */ |
715 | oii = ifp->info; | |
716 | if (oii && oii->oii_fd > 0) { | |
717 | close(oii->oii_fd); | |
718 | oii->oii_fd = -1; | |
719 | } | |
720 | ||
d62a17ae | 721 | XFREE(MTYPE_OSPF_IF_INFO, ifp->info); |
718e3744 | 722 | |
d62a17ae | 723 | return rc; |
718e3744 | 724 | } |
725 | ||
d62a17ae | 726 | int ospf_if_is_enable(struct ospf_interface *oi) |
718e3744 | 727 | { |
608c8870 | 728 | if (!(if_is_loopback(oi->ifp))) |
d62a17ae | 729 | if (if_is_up(oi->ifp)) |
730 | return 1; | |
718e3744 | 731 | |
d62a17ae | 732 | return 0; |
718e3744 | 733 | } |
734 | ||
d62a17ae | 735 | void ospf_if_set_multicast(struct ospf_interface *oi) |
ba6454ec | 736 | { |
d62a17ae | 737 | if ((oi->state > ISM_Loopback) && (oi->type != OSPF_IFTYPE_LOOPBACK) |
738 | && (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
739 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
740 | /* The interface should belong to the OSPF-all-routers group. */ | |
741 | if (!OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS) | |
742 | && (ospf_if_add_allspfrouters(oi->ospf, oi->address, | |
743 | oi->ifp->ifindex) | |
744 | >= 0)) | |
745 | /* Set the flag only if the system call to join | |
746 | * succeeded. */ | |
747 | OI_MEMBER_JOINED(oi, MEMBER_ALLROUTERS); | |
748 | } else { | |
749 | /* The interface should NOT belong to the OSPF-all-routers | |
750 | * group. */ | |
751 | if (OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS)) { | |
752 | /* Only actually drop if this is the last reference */ | |
753 | if (OI_MEMBER_COUNT(oi, MEMBER_ALLROUTERS) == 1) | |
754 | ospf_if_drop_allspfrouters(oi->ospf, | |
755 | oi->address, | |
756 | oi->ifp->ifindex); | |
757 | /* Unset the flag regardless of whether the system call | |
758 | to leave | |
759 | the group succeeded, since it's much safer to assume | |
760 | that | |
761 | we are not a member. */ | |
762 | OI_MEMBER_LEFT(oi, MEMBER_ALLROUTERS); | |
763 | } | |
764 | } | |
765 | ||
766 | if (((oi->type == OSPF_IFTYPE_BROADCAST) | |
767 | || (oi->type == OSPF_IFTYPE_POINTOPOINT)) | |
768 | && ((oi->state == ISM_DR) || (oi->state == ISM_Backup)) | |
769 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
770 | /* The interface should belong to the OSPF-designated-routers | |
771 | * group. */ | |
772 | if (!OI_MEMBER_CHECK(oi, MEMBER_DROUTERS) | |
773 | && (ospf_if_add_alldrouters(oi->ospf, oi->address, | |
774 | oi->ifp->ifindex) | |
775 | >= 0)) | |
776 | /* Set the flag only if the system call to join | |
777 | * succeeded. */ | |
778 | OI_MEMBER_JOINED(oi, MEMBER_DROUTERS); | |
779 | } else { | |
780 | /* The interface should NOT belong to the | |
781 | * OSPF-designated-routers group */ | |
782 | if (OI_MEMBER_CHECK(oi, MEMBER_DROUTERS)) { | |
783 | /* drop only if last reference */ | |
784 | if (OI_MEMBER_COUNT(oi, MEMBER_DROUTERS) == 1) | |
785 | ospf_if_drop_alldrouters(oi->ospf, oi->address, | |
786 | oi->ifp->ifindex); | |
787 | ||
788 | /* Unset the flag regardless of whether the system call | |
789 | to leave | |
790 | the group succeeded, since it's much safer to assume | |
791 | that | |
792 | we are not a member. */ | |
793 | OI_MEMBER_LEFT(oi, MEMBER_DROUTERS); | |
794 | } | |
795 | } | |
ba6454ec | 796 | } |
797 | ||
d62a17ae | 798 | int ospf_if_up(struct ospf_interface *oi) |
718e3744 | 799 | { |
d62a17ae | 800 | if (oi == NULL) |
801 | return 0; | |
802 | ||
803 | if (oi->type == OSPF_IFTYPE_LOOPBACK) | |
804 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_LoopInd); | |
805 | else { | |
d62a17ae | 806 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_InterfaceUp); |
807 | } | |
808 | ||
809 | return 1; | |
718e3744 | 810 | } |
811 | ||
d62a17ae | 812 | int ospf_if_down(struct ospf_interface *oi) |
718e3744 | 813 | { |
df074ec3 | 814 | struct ospf *ospf; |
effee187 DS |
815 | struct route_node *rn; |
816 | struct ospf_route *or; | |
817 | struct listnode *nh; | |
818 | struct ospf_path *op; | |
df074ec3 | 819 | |
d62a17ae | 820 | if (oi == NULL) |
821 | return 0; | |
718e3744 | 822 | |
df074ec3 | 823 | ospf = oi->ospf; |
824 | ||
825 | /* Cease the HELPER role for all the neighbours | |
826 | * of this interface. | |
827 | */ | |
828 | if (ospf->is_helper_supported) { | |
829 | struct route_node *rn = NULL; | |
830 | ||
831 | if (ospf_interface_neighbor_count(oi)) { | |
832 | for (rn = route_top(oi->nbrs); rn; | |
833 | rn = route_next(rn)) { | |
834 | struct ospf_neighbor *nbr = NULL; | |
835 | ||
836 | if (!rn->info) | |
837 | continue; | |
838 | ||
839 | nbr = rn->info; | |
840 | ||
841 | if (OSPF_GR_IS_ACTIVE_HELPER(nbr)) | |
842 | ospf_gr_helper_exit( | |
843 | nbr, OSPF_GR_HELPER_TOPO_CHG); | |
844 | } | |
845 | } | |
846 | } | |
847 | ||
d62a17ae | 848 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); |
849 | /* delete position in router LSA */ | |
850 | oi->lsa_pos_beg = 0; | |
851 | oi->lsa_pos_end = 0; | |
852 | /* Shutdown packet reception and sending */ | |
853 | ospf_if_stream_unset(oi); | |
718e3744 | 854 | |
d4e66f14 TS |
855 | if (!ospf->new_table) |
856 | return 1; | |
effee187 DS |
857 | for (rn = route_top(ospf->new_table); rn; rn = route_next(rn)) { |
858 | or = rn->info; | |
859 | ||
860 | if (!or) | |
861 | continue; | |
862 | ||
863 | for (nh = listhead(or->paths); nh; | |
864 | nh = listnextnode_unchecked(nh)) { | |
865 | op = listgetdata(nh); | |
866 | if (op->ifindex == oi->ifp->ifindex) { | |
867 | or->changed = true; | |
868 | break; | |
869 | } | |
870 | } | |
871 | } | |
872 | ||
d62a17ae | 873 | return 1; |
718e3744 | 874 | } |
875 | ||
6b0655a2 | 876 | |
718e3744 | 877 | /* Virtual Link related functions. */ |
878 | ||
d62a17ae | 879 | struct ospf_vl_data *ospf_vl_data_new(struct ospf_area *area, |
880 | struct in_addr vl_peer) | |
718e3744 | 881 | { |
d62a17ae | 882 | struct ospf_vl_data *vl_data; |
718e3744 | 883 | |
d62a17ae | 884 | vl_data = XCALLOC(MTYPE_OSPF_VL_DATA, sizeof(struct ospf_vl_data)); |
718e3744 | 885 | |
d62a17ae | 886 | vl_data->vl_peer.s_addr = vl_peer.s_addr; |
887 | vl_data->vl_area_id = area->area_id; | |
888 | vl_data->vl_area_id_fmt = area->area_id_fmt; | |
718e3744 | 889 | |
d62a17ae | 890 | return vl_data; |
718e3744 | 891 | } |
892 | ||
d62a17ae | 893 | void ospf_vl_data_free(struct ospf_vl_data *vl_data) |
718e3744 | 894 | { |
d62a17ae | 895 | XFREE(MTYPE_OSPF_VL_DATA, vl_data); |
718e3744 | 896 | } |
897 | ||
d7c0a89a | 898 | unsigned int vlink_count = 0; |
718e3744 | 899 | |
d62a17ae | 900 | struct ospf_interface *ospf_vl_new(struct ospf *ospf, |
901 | struct ospf_vl_data *vl_data) | |
718e3744 | 902 | { |
d62a17ae | 903 | struct ospf_interface *voi; |
904 | struct interface *vi; | |
bcc24579 | 905 | char ifname[INTERFACE_NAMSIZ]; |
d62a17ae | 906 | struct ospf_area *area; |
907 | struct in_addr area_id; | |
908 | struct connected *co; | |
909 | struct prefix_ipv4 *p; | |
910 | ||
911 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 912 | zlog_debug("%s: (%s): Start", __func__, ospf_get_name(ospf)); |
d62a17ae | 913 | if (vlink_count == OSPF_VL_MAX_COUNT) { |
914 | if (IS_DEBUG_OSPF_EVENT) | |
915 | zlog_debug( | |
29448075 | 916 | "%s: Alarm: cannot create more than OSPF_MAX_VL_COUNT virtual links", |
917 | __func__); | |
918 | ||
d62a17ae | 919 | return NULL; |
920 | } | |
921 | ||
922 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 923 | zlog_debug("%s: creating pseudo zebra interface vrf id %u", |
924 | __func__, ospf->vrf_id); | |
d62a17ae | 925 | |
2ec42b85 | 926 | snprintf(ifname, sizeof(ifname), "VLINK%u", vlink_count); |
f60a1188 | 927 | vi = if_get_by_name(ifname, ospf->vrf_id, ospf->name); |
d62a17ae | 928 | /* |
f60a1188 | 929 | * if_get_by_name sets ZEBRA_INTERFACE_LINKDETECTION |
d62a17ae | 930 | * virtual links don't need this. |
931 | */ | |
932 | UNSET_FLAG(vi->status, ZEBRA_INTERFACE_LINKDETECTION); | |
933 | co = connected_new(); | |
934 | co->ifp = vi; | |
935 | listnode_add(vi->connected, co); | |
936 | ||
937 | p = prefix_ipv4_new(); | |
938 | p->family = AF_INET; | |
975a328e | 939 | p->prefix.s_addr = INADDR_ANY; |
d62a17ae | 940 | p->prefixlen = 0; |
941 | ||
942 | co->address = (struct prefix *)p; | |
943 | ||
944 | voi = ospf_if_new(ospf, vi, co->address); | |
945 | if (voi == NULL) { | |
946 | if (IS_DEBUG_OSPF_EVENT) | |
947 | zlog_debug( | |
29448075 | 948 | "%s: Alarm: OSPF int structure is not created", |
949 | __func__); | |
950 | ||
d62a17ae | 951 | return NULL; |
952 | } | |
953 | voi->connected = co; | |
954 | voi->vl_data = vl_data; | |
955 | voi->ifp->mtu = OSPF_VL_MTU; | |
956 | voi->type = OSPF_IFTYPE_VIRTUALLINK; | |
957 | ||
958 | vlink_count++; | |
959 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 960 | zlog_debug("%s: Created name: %s set if->name to %s", __func__, |
961 | ifname, vi->name); | |
d62a17ae | 962 | |
975a328e | 963 | area_id.s_addr = INADDR_ANY; |
d62a17ae | 964 | area = ospf_area_get(ospf, area_id); |
965 | voi->area = area; | |
966 | ||
967 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 968 | zlog_debug("%s: set associated area to the backbone", __func__); |
d62a17ae | 969 | |
970 | /* Add pseudo neighbor. */ | |
971 | ospf_nbr_self_reset(voi, voi->ospf->router_id); | |
972 | ||
973 | ospf_area_add_if(voi->area, voi); | |
974 | ||
d62a17ae | 975 | if (IS_DEBUG_OSPF_EVENT) |
29448075 | 976 | zlog_debug("%s: Stop", __func__); |
d62a17ae | 977 | return voi; |
718e3744 | 978 | } |
979 | ||
d62a17ae | 980 | static void ospf_vl_if_delete(struct ospf_vl_data *vl_data) |
718e3744 | 981 | { |
7a004ccf | 982 | struct interface *ifp = vl_data->vl_oi->ifp; |
ce27a13e | 983 | struct vrf *vrf = ifp->vrf; |
7a004ccf | 984 | |
975a328e | 985 | vl_data->vl_oi->address->u.prefix4.s_addr = INADDR_ANY; |
d62a17ae | 986 | vl_data->vl_oi->address->prefixlen = 0; |
987 | ospf_if_free(vl_data->vl_oi); | |
7a004ccf | 988 | if_delete(&ifp); |
ce27a13e IR |
989 | if (!vrf_is_enabled(vrf)) |
990 | vrf_delete(vrf); | |
718e3744 | 991 | } |
992 | ||
19ce7d5e PG |
993 | /* for a defined area, count the number of configured vl |
994 | */ | |
995 | int ospf_vl_count(struct ospf *ospf, struct ospf_area *area) | |
996 | { | |
997 | int count = 0; | |
998 | struct ospf_vl_data *vl_data; | |
999 | struct listnode *node; | |
1000 | ||
1001 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
1002 | if (area | |
1003 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1004 | continue; | |
1005 | count++; | |
1006 | } | |
1007 | return count; | |
1008 | } | |
1009 | ||
9c27ef9b PJ |
1010 | /* Look up vl_data for given peer, optionally qualified to be in the |
1011 | * specified area. NULL area returns first found.. | |
1012 | */ | |
d62a17ae | 1013 | struct ospf_vl_data *ospf_vl_lookup(struct ospf *ospf, struct ospf_area *area, |
1014 | struct in_addr vl_peer) | |
718e3744 | 1015 | { |
d62a17ae | 1016 | struct ospf_vl_data *vl_data; |
1017 | struct listnode *node; | |
1018 | ||
1019 | if (IS_DEBUG_OSPF_EVENT) { | |
96b663a3 | 1020 | zlog_debug("%s: Looking for %pI4", __func__, &vl_peer); |
d62a17ae | 1021 | if (area) |
96b663a3 MS |
1022 | zlog_debug("%s: in area %pI4", __func__, |
1023 | &area->area_id); | |
d62a17ae | 1024 | } |
1025 | ||
1026 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
1027 | if (IS_DEBUG_OSPF_EVENT) | |
96b663a3 | 1028 | zlog_debug("%s: VL %s, peer %pI4", __func__, |
d62a17ae | 1029 | vl_data->vl_oi->ifp->name, |
96b663a3 | 1030 | &vl_data->vl_peer); |
d62a17ae | 1031 | |
1032 | if (area | |
1033 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1034 | continue; | |
1035 | ||
1036 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &vl_peer)) | |
1037 | return vl_data; | |
1038 | } | |
1039 | ||
1040 | return NULL; | |
718e3744 | 1041 | } |
1042 | ||
d62a17ae | 1043 | static void ospf_vl_shutdown(struct ospf_vl_data *vl_data) |
718e3744 | 1044 | { |
d62a17ae | 1045 | struct ospf_interface *oi; |
718e3744 | 1046 | |
d62a17ae | 1047 | if ((oi = vl_data->vl_oi) == NULL) |
1048 | return; | |
718e3744 | 1049 | |
975a328e | 1050 | oi->address->u.prefix4.s_addr = INADDR_ANY; |
d62a17ae | 1051 | oi->address->prefixlen = 0; |
718e3744 | 1052 | |
d62a17ae | 1053 | UNSET_FLAG(oi->ifp->flags, IFF_UP); |
1054 | /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */ | |
1055 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); | |
718e3744 | 1056 | } |
1057 | ||
d62a17ae | 1058 | void ospf_vl_add(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 1059 | { |
d62a17ae | 1060 | listnode_add(ospf->vlinks, vl_data); |
1061 | hook_call(ospf_vl_add, vl_data); | |
718e3744 | 1062 | } |
1063 | ||
d62a17ae | 1064 | void ospf_vl_delete(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 1065 | { |
d62a17ae | 1066 | ospf_vl_shutdown(vl_data); |
1067 | ospf_vl_if_delete(vl_data); | |
718e3744 | 1068 | |
d62a17ae | 1069 | hook_call(ospf_vl_delete, vl_data); |
1070 | listnode_delete(ospf->vlinks, vl_data); | |
718e3744 | 1071 | |
d62a17ae | 1072 | ospf_vl_data_free(vl_data); |
718e3744 | 1073 | } |
1074 | ||
1d376ff5 G |
1075 | static int ospf_vl_set_params(struct ospf_area *area, |
1076 | struct ospf_vl_data *vl_data, struct vertex *v) | |
718e3744 | 1077 | { |
d62a17ae | 1078 | int changed = 0; |
1079 | struct ospf_interface *voi; | |
1080 | struct listnode *node; | |
1081 | struct vertex_parent *vp = NULL; | |
1082 | unsigned int i; | |
1083 | struct router_lsa *rl; | |
1d376ff5 | 1084 | struct ospf_interface *oi; |
d62a17ae | 1085 | |
1086 | voi = vl_data->vl_oi; | |
1087 | ||
1088 | if (voi->output_cost != v->distance) { | |
1089 | ||
1090 | voi->output_cost = v->distance; | |
1091 | changed = 1; | |
1092 | } | |
1093 | ||
1094 | for (ALL_LIST_ELEMENTS_RO(v->parents, node, vp)) { | |
1d376ff5 | 1095 | vl_data->nexthop.lsa_pos = vp->nexthop->lsa_pos; |
d62a17ae | 1096 | vl_data->nexthop.router = vp->nexthop->router; |
1097 | ||
1d376ff5 G |
1098 | /* |
1099 | * Only deal with interface data when the local | |
1100 | * (calculating) node is the SPF root node | |
1101 | */ | |
1102 | if (!area->spf_dry_run) { | |
1103 | oi = ospf_if_lookup_by_lsa_pos( | |
1104 | area, vl_data->nexthop.lsa_pos); | |
d62a17ae | 1105 | |
1d376ff5 G |
1106 | if (!IPV4_ADDR_SAME(&voi->address->u.prefix4, |
1107 | &oi->address->u.prefix4)) | |
1108 | changed = 1; | |
1109 | ||
1110 | voi->address->u.prefix4 = oi->address->u.prefix4; | |
1111 | voi->address->prefixlen = oi->address->prefixlen; | |
1112 | } | |
d62a17ae | 1113 | |
1114 | break; /* We take the first interface. */ | |
1115 | } | |
1116 | ||
1117 | rl = (struct router_lsa *)v->lsa; | |
1118 | ||
1119 | /* use SPF determined backlink index in struct vertex | |
1120 | * for virtual link destination address | |
1121 | */ | |
1122 | if (vp && vp->backlink >= 0) { | |
1123 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1124 | &rl->link[vp->backlink].link_data)) | |
1125 | changed = 1; | |
1126 | vl_data->peer_addr = rl->link[vp->backlink].link_data; | |
1127 | } else { | |
1128 | /* This is highly odd, there is no backlink index | |
1129 | * there should be due to the ospf_spf_has_link() check | |
1130 | * in SPF. Lets warn and try pick a link anyway. | |
1131 | */ | |
266469eb | 1132 | zlog_info("ospf_vl_set_params: No backlink for %s!", |
d62a17ae | 1133 | vl_data->vl_oi->ifp->name); |
1134 | for (i = 0; i < ntohs(rl->links); i++) { | |
1135 | switch (rl->link[i].type) { | |
1136 | case LSA_LINK_TYPE_VIRTUALLINK: | |
1137 | if (IS_DEBUG_OSPF_EVENT) | |
1138 | zlog_debug( | |
1139 | "found back link through VL"); | |
1140 | /* fallthru */ | |
1141 | case LSA_LINK_TYPE_TRANSIT: | |
1142 | case LSA_LINK_TYPE_POINTOPOINT: | |
1143 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1144 | &rl->link[i].link_data)) | |
1145 | changed = 1; | |
1146 | vl_data->peer_addr = rl->link[i].link_data; | |
1147 | } | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | if (IS_DEBUG_OSPF_EVENT) | |
96b663a3 | 1152 | zlog_debug("%s: %s peer address: %pI4, cost: %d,%schanged", |
d62a17ae | 1153 | __func__, vl_data->vl_oi->ifp->name, |
96b663a3 | 1154 | &vl_data->peer_addr, voi->output_cost, |
d62a17ae | 1155 | (changed ? " " : " un")); |
1156 | ||
1157 | return changed; | |
718e3744 | 1158 | } |
1159 | ||
1160 | ||
d62a17ae | 1161 | void ospf_vl_up_check(struct ospf_area *area, struct in_addr rid, |
1162 | struct vertex *v) | |
718e3744 | 1163 | { |
d62a17ae | 1164 | struct ospf *ospf = area->ospf; |
1165 | struct listnode *node; | |
1166 | struct ospf_vl_data *vl_data; | |
1167 | struct ospf_interface *oi; | |
1168 | ||
1169 | if (IS_DEBUG_OSPF_EVENT) { | |
29448075 | 1170 | zlog_debug("%s: Start", __func__); |
1171 | zlog_debug("%s: Router ID is %pI4 Area is %pI4", __func__, &rid, | |
96b663a3 | 1172 | &area->area_id); |
718e3744 | 1173 | } |
1174 | ||
d62a17ae | 1175 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { |
1176 | if (IS_DEBUG_OSPF_EVENT) { | |
96b663a3 | 1177 | zlog_debug("%s: considering VL, %s in area %pI4", |
d62a17ae | 1178 | __func__, vl_data->vl_oi->ifp->name, |
96b663a3 MS |
1179 | &vl_data->vl_area_id); |
1180 | zlog_debug("%s: peer ID: %pI4", __func__, | |
1181 | &vl_data->vl_peer); | |
d62a17ae | 1182 | } |
1183 | ||
1184 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &rid) | |
1185 | && IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) { | |
1186 | oi = vl_data->vl_oi; | |
1187 | SET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1188 | ||
1189 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 1190 | zlog_debug("%s: this VL matched", __func__); |
d62a17ae | 1191 | |
1192 | if (oi->state == ISM_Down) { | |
1193 | if (IS_DEBUG_OSPF_EVENT) | |
1194 | zlog_debug( | |
29448075 | 1195 | "%s: VL is down, waking it up", |
1196 | __func__); | |
d62a17ae | 1197 | SET_FLAG(oi->ifp->flags, IFF_UP); |
1198 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceUp); | |
1199 | } | |
1200 | ||
1d376ff5 | 1201 | if (ospf_vl_set_params(area, vl_data, v)) { |
d62a17ae | 1202 | if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) |
1203 | zlog_debug( | |
29448075 | 1204 | "%s: VL cost change, scheduling router lsa refresh", |
1205 | __func__); | |
d62a17ae | 1206 | if (ospf->backbone) |
1207 | ospf_router_lsa_update_area( | |
1208 | ospf->backbone); | |
1209 | else if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1210 | zlog_debug( | |
29448075 | 1211 | "%s: VL cost change, no backbone!", |
1212 | __func__); | |
d62a17ae | 1213 | } |
1214 | } | |
1215 | } | |
718e3744 | 1216 | } |
1217 | ||
d62a17ae | 1218 | void ospf_vl_unapprove(struct ospf *ospf) |
718e3744 | 1219 | { |
d62a17ae | 1220 | struct listnode *node; |
1221 | struct ospf_vl_data *vl_data; | |
718e3744 | 1222 | |
d62a17ae | 1223 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) |
1224 | UNSET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
718e3744 | 1225 | } |
1226 | ||
d62a17ae | 1227 | void ospf_vl_shut_unapproved(struct ospf *ospf) |
718e3744 | 1228 | { |
d62a17ae | 1229 | struct listnode *node, *nnode; |
1230 | struct ospf_vl_data *vl_data; | |
718e3744 | 1231 | |
d62a17ae | 1232 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) |
1233 | if (!CHECK_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED)) | |
1234 | ospf_vl_shutdown(vl_data); | |
718e3744 | 1235 | } |
1236 | ||
d62a17ae | 1237 | int ospf_full_virtual_nbrs(struct ospf_area *area) |
718e3744 | 1238 | { |
d62a17ae | 1239 | if (IS_DEBUG_OSPF_EVENT) { |
1240 | zlog_debug( | |
96b663a3 MS |
1241 | "counting fully adjacent virtual neighbors in area %pI4", |
1242 | &area->area_id); | |
d62a17ae | 1243 | zlog_debug("there are %d of them", area->full_vls); |
1244 | } | |
1245 | ||
1246 | return area->full_vls; | |
718e3744 | 1247 | } |
1248 | ||
d62a17ae | 1249 | int ospf_vls_in_area(struct ospf_area *area) |
718e3744 | 1250 | { |
d62a17ae | 1251 | struct listnode *node; |
1252 | struct ospf_vl_data *vl_data; | |
1253 | int c = 0; | |
718e3744 | 1254 | |
d62a17ae | 1255 | for (ALL_LIST_ELEMENTS_RO(area->ospf->vlinks, node, vl_data)) |
1256 | if (IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1257 | c++; | |
718e3744 | 1258 | |
d62a17ae | 1259 | return c; |
718e3744 | 1260 | } |
1261 | ||
6b0655a2 | 1262 | |
4d762f26 | 1263 | struct crypt_key *ospf_crypt_key_new(void) |
718e3744 | 1264 | { |
d62a17ae | 1265 | return XCALLOC(MTYPE_OSPF_CRYPT_KEY, sizeof(struct crypt_key)); |
718e3744 | 1266 | } |
1267 | ||
d62a17ae | 1268 | void ospf_crypt_key_add(struct list *crypt, struct crypt_key *ck) |
718e3744 | 1269 | { |
d62a17ae | 1270 | listnode_add(crypt, ck); |
718e3744 | 1271 | } |
1272 | ||
d7c0a89a | 1273 | struct crypt_key *ospf_crypt_key_lookup(struct list *auth_crypt, uint8_t key_id) |
718e3744 | 1274 | { |
d62a17ae | 1275 | struct listnode *node; |
1276 | struct crypt_key *ck; | |
718e3744 | 1277 | |
d62a17ae | 1278 | for (ALL_LIST_ELEMENTS_RO(auth_crypt, node, ck)) |
1279 | if (ck->key_id == key_id) | |
1280 | return ck; | |
718e3744 | 1281 | |
d62a17ae | 1282 | return NULL; |
718e3744 | 1283 | } |
1284 | ||
d7c0a89a | 1285 | int ospf_crypt_key_delete(struct list *auth_crypt, uint8_t key_id) |
718e3744 | 1286 | { |
d62a17ae | 1287 | struct listnode *node, *nnode; |
1288 | struct crypt_key *ck; | |
1289 | ||
1290 | for (ALL_LIST_ELEMENTS(auth_crypt, node, nnode, ck)) { | |
1291 | if (ck->key_id == key_id) { | |
1292 | listnode_delete(auth_crypt, ck); | |
1293 | XFREE(MTYPE_OSPF_CRYPT_KEY, ck); | |
1294 | return 1; | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | return 0; | |
718e3744 | 1299 | } |
1300 | ||
d7c0a89a | 1301 | uint8_t ospf_default_iftype(struct interface *ifp) |
bc18d616 | 1302 | { |
d62a17ae | 1303 | if (if_is_pointopoint(ifp)) |
1304 | return OSPF_IFTYPE_POINTOPOINT; | |
608c8870 | 1305 | else if (if_is_loopback(ifp)) |
d62a17ae | 1306 | return OSPF_IFTYPE_LOOPBACK; |
1307 | else | |
1308 | return OSPF_IFTYPE_BROADCAST; | |
bc18d616 | 1309 | } |
1310 | ||
ef7bd2a3 DS |
1311 | void ospf_if_interface(struct interface *ifp) |
1312 | { | |
1313 | hook_call(ospf_if_update, ifp); | |
1314 | } | |
1315 | ||
cbf32f74 | 1316 | uint32_t ospf_if_count_area_params(struct interface *ifp) |
138c5a74 | 1317 | { |
cbf15681 IR |
1318 | struct ospf_if_params *params; |
1319 | struct route_node *rn; | |
1320 | uint32_t count = 0; | |
cbf32f74 IR |
1321 | |
1322 | params = IF_DEF_PARAMS(ifp); | |
1323 | if (OSPF_IF_PARAM_CONFIGURED(params, if_area)) | |
1324 | count++; | |
1325 | ||
1326 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) | |
1327 | if ((params = rn->info) | |
1328 | && OSPF_IF_PARAM_CONFIGURED(params, if_area)) | |
1329 | count++; | |
1330 | ||
1331 | return count; | |
1332 | } | |
1333 | ||
1334 | static int ospf_ifp_create(struct interface *ifp) | |
1335 | { | |
1336 | struct ospf *ospf = NULL; | |
2655301d | 1337 | struct ospf_if_info *oii; |
ef7bd2a3 DS |
1338 | |
1339 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1340 | zlog_debug( | |
1341 | "Zebra: interface add %s vrf %s[%u] index %d flags %llx metric %d mtu %d speed %u", | |
096f7609 IR |
1342 | ifp->name, ifp->vrf->name, ifp->vrf->vrf_id, |
1343 | ifp->ifindex, (unsigned long long)ifp->flags, | |
1344 | ifp->metric, ifp->mtu, ifp->speed); | |
ef7bd2a3 DS |
1345 | |
1346 | assert(ifp->info); | |
1347 | ||
2655301d DS |
1348 | oii = ifp->info; |
1349 | oii->curr_mtu = ifp->mtu; | |
1350 | ||
ef7bd2a3 DS |
1351 | if (IF_DEF_PARAMS(ifp) |
1352 | && !OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS(ifp), type)) { | |
1353 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), type); | |
1354 | IF_DEF_PARAMS(ifp)->type = ospf_default_iftype(ifp); | |
1355 | } | |
1356 | ||
096f7609 | 1357 | ospf = ifp->vrf->info; |
ef7bd2a3 DS |
1358 | if (!ospf) |
1359 | return 0; | |
1360 | ||
cbf32f74 | 1361 | if (ospf_if_count_area_params(ifp) > 0) |
cbf15681 | 1362 | ospf_interface_area_set(ospf, ifp); |
cbf15681 | 1363 | |
ef7bd2a3 DS |
1364 | ospf_if_recalculate_output_cost(ifp); |
1365 | ||
1366 | ospf_if_update(ospf, ifp); | |
1367 | ||
0b4124c1 KS |
1368 | if (HAS_LINK_PARAMS(ifp)) |
1369 | ospf_mpls_te_update_if(ifp); | |
1370 | ||
ef7bd2a3 DS |
1371 | hook_call(ospf_if_update, ifp); |
1372 | ||
138c5a74 DS |
1373 | return 0; |
1374 | } | |
1375 | ||
1376 | static int ospf_ifp_up(struct interface *ifp) | |
1377 | { | |
ddbf3e60 DS |
1378 | struct ospf_interface *oi; |
1379 | struct route_node *rn; | |
85d25587 | 1380 | struct ospf_if_info *oii = ifp->info; |
04a0401f MS |
1381 | struct ospf *ospf; |
1382 | ||
1383 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1384 | zlog_debug("Zebra: Interface[%s] state change to up.", | |
1385 | ifp->name); | |
1386 | ||
1387 | /* Open per-intf write socket if configured */ | |
1388 | ospf = ifp->vrf->info; | |
1389 | if (ospf && ospf->intf_socket_enabled) | |
1390 | ospf_ifp_sock_init(ifp); | |
ddbf3e60 | 1391 | |
85d25587 | 1392 | ospf_if_recalculate_output_cost(ifp); |
ddbf3e60 | 1393 | |
85d25587 | 1394 | if (oii && oii->curr_mtu != ifp->mtu) { |
ddbf3e60 DS |
1395 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) |
1396 | zlog_debug( | |
85d25587 DS |
1397 | "Zebra: Interface[%s] MTU change %u -> %u.", |
1398 | ifp->name, oii->curr_mtu, ifp->mtu); | |
ddbf3e60 | 1399 | |
85d25587 DS |
1400 | oii->curr_mtu = ifp->mtu; |
1401 | /* Must reset the interface (simulate down/up) when MTU | |
1402 | * changes. */ | |
1403 | ospf_if_reset(ifp); | |
ddbf3e60 | 1404 | |
ddbf3e60 DS |
1405 | return 0; |
1406 | } | |
1407 | ||
ddbf3e60 DS |
1408 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { |
1409 | if ((oi = rn->info) == NULL) | |
1410 | continue; | |
1411 | ||
1412 | ospf_if_up(oi); | |
1413 | } | |
1414 | ||
0b4124c1 KS |
1415 | if (HAS_LINK_PARAMS(ifp)) |
1416 | ospf_mpls_te_update_if(ifp); | |
1417 | ||
138c5a74 DS |
1418 | return 0; |
1419 | } | |
1420 | ||
1421 | static int ospf_ifp_down(struct interface *ifp) | |
1422 | { | |
b0b69e59 DS |
1423 | struct ospf_interface *oi; |
1424 | struct route_node *node; | |
1425 | ||
1426 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1427 | zlog_debug("Zebra: Interface[%s] state change to down.", | |
1428 | ifp->name); | |
1429 | ||
1430 | for (node = route_top(IF_OIFS(ifp)); node; node = route_next(node)) { | |
1431 | if ((oi = node->info) == NULL) | |
1432 | continue; | |
1433 | ospf_if_down(oi); | |
1434 | } | |
1435 | ||
04a0401f MS |
1436 | /* Close per-interface write socket if configured */ |
1437 | ospf_ifp_sock_close(ifp); | |
1438 | ||
138c5a74 DS |
1439 | return 0; |
1440 | } | |
1441 | ||
1442 | static int ospf_ifp_destroy(struct interface *ifp) | |
1443 | { | |
cbf15681 | 1444 | struct ospf *ospf; |
3c3c3252 DS |
1445 | struct route_node *rn; |
1446 | ||
1447 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1448 | zlog_debug( | |
1449 | "Zebra: interface delete %s vrf %s[%u] index %d flags %llx metric %d mtu %d", | |
096f7609 IR |
1450 | ifp->name, ifp->vrf->name, ifp->vrf->vrf_id, |
1451 | ifp->ifindex, (unsigned long long)ifp->flags, | |
1452 | ifp->metric, ifp->mtu); | |
3c3c3252 DS |
1453 | |
1454 | hook_call(ospf_if_delete, ifp); | |
1455 | ||
096f7609 | 1456 | ospf = ifp->vrf->info; |
cbf15681 | 1457 | if (ospf) { |
cbf32f74 | 1458 | if (ospf_if_count_area_params(ifp) > 0) |
cbf15681 | 1459 | ospf_interface_area_unset(ospf, ifp); |
cbf15681 IR |
1460 | } |
1461 | ||
3c3c3252 DS |
1462 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) |
1463 | if (rn->info) | |
1464 | ospf_if_free((struct ospf_interface *)rn->info); | |
1465 | ||
138c5a74 DS |
1466 | return 0; |
1467 | } | |
1468 | ||
be418160 | 1469 | /* Resetting ospf hello timer */ |
1470 | void ospf_reset_hello_timer(struct interface *ifp, struct in_addr addr, | |
1471 | bool is_addr) | |
1472 | { | |
1473 | struct route_node *rn; | |
1474 | ||
1475 | if (is_addr) { | |
1476 | struct prefix p; | |
1477 | struct ospf_interface *oi = NULL; | |
1478 | ||
1479 | p.u.prefix4 = addr; | |
1480 | p.family = AF_INET; | |
46a8c343 | 1481 | p.prefixlen = IPV4_MAX_BITLEN; |
be418160 | 1482 | |
1483 | oi = ospf_if_table_lookup(ifp, &p); | |
1484 | ||
1485 | if (oi) { | |
1486 | /* Send hello before restart the hello timer | |
1487 | * to avoid session flaps in case of bigger | |
1488 | * hello interval configurations. | |
1489 | */ | |
1490 | ospf_hello_send(oi); | |
1491 | ||
1492 | /* Restart hello timer for this interface */ | |
e16d030c | 1493 | EVENT_OFF(oi->t_hello); |
be418160 | 1494 | OSPF_HELLO_TIMER_ON(oi); |
1495 | } | |
1496 | ||
1497 | return; | |
1498 | } | |
1499 | ||
1500 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
1501 | struct ospf_interface *oi = rn->info; | |
1502 | ||
1503 | if (!oi) | |
1504 | continue; | |
1505 | ||
1506 | /* If hello interval configured on this oi, don't restart. */ | |
1507 | if (OSPF_IF_PARAM_CONFIGURED(oi->params, v_hello)) | |
1508 | continue; | |
1509 | ||
1510 | /* Send hello before restart the hello timer | |
1511 | * to avoid session flaps in case of bigger | |
1512 | * hello interval configurations. | |
1513 | */ | |
1514 | ospf_hello_send(oi); | |
1515 | ||
1516 | /* Restart the hello timer. */ | |
e16d030c | 1517 | EVENT_OFF(oi->t_hello); |
be418160 | 1518 | OSPF_HELLO_TIMER_ON(oi); |
1519 | } | |
1520 | } | |
1521 | ||
4d762f26 | 1522 | void ospf_if_init(void) |
718e3744 | 1523 | { |
138c5a74 DS |
1524 | if_zapi_callbacks(ospf_ifp_create, ospf_ifp_up, |
1525 | ospf_ifp_down, ospf_ifp_destroy); | |
1526 | ||
d62a17ae | 1527 | /* Initialize Zebra interface data structure. */ |
ce19a04a DL |
1528 | hook_register_prio(if_add, 0, ospf_if_new_hook); |
1529 | hook_register_prio(if_del, 0, ospf_if_delete_hook); | |
718e3744 | 1530 | } |