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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; | |
dd2bc4fb DS |
104 | |
105 | if (if_is_loopback(oi->ifp)) | |
106 | cost = 0; | |
d62a17ae | 107 | } |
108 | ||
109 | return cost; | |
718e3744 | 110 | } |
111 | ||
d62a17ae | 112 | void ospf_if_recalculate_output_cost(struct interface *ifp) |
718e3744 | 113 | { |
d7c0a89a | 114 | uint32_t newcost; |
d62a17ae | 115 | struct route_node *rn; |
116 | ||
117 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
118 | struct ospf_interface *oi; | |
119 | ||
120 | if ((oi = rn->info) == NULL) | |
121 | continue; | |
122 | ||
123 | newcost = ospf_if_get_output_cost(oi); | |
124 | ||
125 | /* Is actual output cost changed? */ | |
126 | if (oi->output_cost != newcost) { | |
127 | oi->output_cost = newcost; | |
128 | ospf_router_lsa_update_area(oi->area); | |
129 | } | |
718e3744 | 130 | } |
718e3744 | 131 | } |
132 | ||
d62a17ae | 133 | /* Simulate down/up on the interface. This is needed, for example, when |
a608bbf2 | 134 | the MTU changes. */ |
d62a17ae | 135 | void ospf_if_reset(struct interface *ifp) |
a608bbf2 | 136 | { |
d62a17ae | 137 | struct route_node *rn; |
138 | ||
139 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
140 | struct ospf_interface *oi; | |
141 | ||
142 | if ((oi = rn->info) == NULL) | |
143 | continue; | |
144 | ||
145 | ospf_if_down(oi); | |
146 | ospf_if_up(oi); | |
147 | } | |
a608bbf2 | 148 | } |
149 | ||
d62a17ae | 150 | void ospf_if_reset_variables(struct ospf_interface *oi) |
718e3744 | 151 | { |
d62a17ae | 152 | /* Set default values. */ |
153 | /* don't clear this flag. oi->flag = OSPF_IF_DISABLE; */ | |
718e3744 | 154 | |
d62a17ae | 155 | if (oi->vl_data) |
156 | oi->type = OSPF_IFTYPE_VIRTUALLINK; | |
157 | else | |
158 | /* preserve network-type */ | |
159 | if (oi->type != OSPF_IFTYPE_NBMA) | |
160 | oi->type = OSPF_IFTYPE_BROADCAST; | |
718e3744 | 161 | |
d62a17ae | 162 | oi->state = ISM_Down; |
718e3744 | 163 | |
d62a17ae | 164 | oi->crypt_seqnum = 0; |
718e3744 | 165 | |
d62a17ae | 166 | /* This must be short, (less than RxmtInterval) |
167 | - RFC 2328 Section 13.5 para 3. Set to 1 second to avoid Acks being | |
168 | held back for too long - MAG */ | |
169 | oi->v_ls_ack = 1; | |
718e3744 | 170 | } |
171 | ||
20916fba | 172 | /* lookup oi for specified prefix/ifp */ |
d62a17ae | 173 | struct ospf_interface *ospf_if_table_lookup(struct interface *ifp, |
174 | struct prefix *prefix) | |
20916fba | 175 | { |
d62a17ae | 176 | struct prefix p; |
177 | struct route_node *rn; | |
178 | struct ospf_interface *rninfo = NULL; | |
179 | ||
180 | p = *prefix; | |
936fbaef | 181 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 182 | |
183 | /* route_node_get implicitely locks */ | |
184 | if ((rn = route_node_lookup(IF_OIFS(ifp), &p))) { | |
185 | rninfo = (struct ospf_interface *)rn->info; | |
186 | route_unlock_node(rn); | |
187 | } | |
188 | ||
189 | return rninfo; | |
20916fba | 190 | } |
191 | ||
d62a17ae | 192 | static void ospf_add_to_if(struct interface *ifp, struct ospf_interface *oi) |
718e3744 | 193 | { |
d62a17ae | 194 | struct route_node *rn; |
195 | struct prefix p; | |
196 | ||
197 | p = *oi->address; | |
936fbaef | 198 | p.prefixlen = IPV4_MAX_BITLEN; |
a6435618 | 199 | apply_mask(&p); |
d62a17ae | 200 | |
201 | rn = route_node_get(IF_OIFS(ifp), &p); | |
202 | /* rn->info should either be NULL or equal to this oi | |
203 | * as route_node_get may return an existing node | |
204 | */ | |
205 | assert(!rn->info || rn->info == oi); | |
206 | rn->info = oi; | |
718e3744 | 207 | } |
208 | ||
d62a17ae | 209 | static void ospf_delete_from_if(struct interface *ifp, |
210 | struct ospf_interface *oi) | |
718e3744 | 211 | { |
d62a17ae | 212 | struct route_node *rn; |
213 | struct prefix p; | |
214 | ||
215 | p = *oi->address; | |
936fbaef | 216 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 217 | |
218 | rn = route_node_lookup(IF_OIFS(oi->ifp), &p); | |
219 | assert(rn); | |
220 | assert(rn->info); | |
221 | rn->info = NULL; | |
222 | route_unlock_node(rn); | |
223 | route_unlock_node(rn); | |
718e3744 | 224 | } |
225 | ||
d62a17ae | 226 | struct ospf_interface *ospf_if_new(struct ospf *ospf, struct interface *ifp, |
227 | struct prefix *p) | |
718e3744 | 228 | { |
d62a17ae | 229 | struct ospf_interface *oi; |
230 | ||
36a106e0 DS |
231 | oi = ospf_if_table_lookup(ifp, p); |
232 | if (oi) | |
d62a17ae | 233 | return oi; |
234 | ||
36a106e0 DS |
235 | oi = XCALLOC(MTYPE_OSPF_IF, sizeof(struct ospf_interface)); |
236 | ||
237 | oi->obuf = ospf_fifo_new(); | |
238 | ||
d62a17ae | 239 | /* Set zebra interface pointer. */ |
240 | oi->ifp = ifp; | |
241 | oi->address = p; | |
242 | ||
243 | ospf_add_to_if(ifp, oi); | |
244 | listnode_add(ospf->oiflist, oi); | |
245 | ||
246 | /* Initialize neighbor list. */ | |
247 | oi->nbrs = route_table_init(); | |
248 | ||
249 | /* Initialize static neighbor list. */ | |
250 | oi->nbr_nbma = list_new(); | |
251 | ||
252 | /* Initialize Link State Acknowledgment list. */ | |
253 | oi->ls_ack = list_new(); | |
254 | oi->ls_ack_direct.ls_ack = list_new(); | |
255 | ||
256 | /* Set default values. */ | |
257 | ospf_if_reset_variables(oi); | |
258 | ||
259 | /* Set pseudo neighbor to Null */ | |
260 | oi->nbr_self = NULL; | |
261 | ||
262 | oi->ls_upd_queue = route_table_init(); | |
263 | oi->t_ls_upd_event = NULL; | |
264 | oi->t_ls_ack_direct = NULL; | |
265 | ||
fce7f209 | 266 | oi->crypt_seqnum = frr_sequence32_next(); |
d62a17ae | 267 | |
268 | ospf_opaque_type9_lsa_init(oi); | |
269 | ||
270 | oi->ospf = ospf; | |
4fc8a852 | 271 | |
d62a17ae | 272 | QOBJ_REG(oi, ospf_interface); |
273 | ||
b5a8894d CS |
274 | if (IS_DEBUG_OSPF_EVENT) |
275 | zlog_debug("%s: ospf interface %s vrf %s id %u created", | |
15569c58 DA |
276 | __func__, ifp->name, ospf_get_name(ospf), |
277 | ospf->vrf_id); | |
b5a8894d | 278 | |
d62a17ae | 279 | return oi; |
718e3744 | 280 | } |
281 | ||
282 | /* Restore an interface to its pre UP state | |
283 | Used from ism_interface_down only */ | |
d62a17ae | 284 | void ospf_if_cleanup(struct ospf_interface *oi) |
718e3744 | 285 | { |
d62a17ae | 286 | struct route_node *rn; |
287 | struct listnode *node, *nnode; | |
288 | struct ospf_neighbor *nbr; | |
289 | struct ospf_nbr_nbma *nbr_nbma; | |
290 | struct ospf_lsa *lsa; | |
291 | ||
292 | /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */ | |
293 | /* delete all static neighbors attached to this interface */ | |
294 | for (ALL_LIST_ELEMENTS(oi->nbr_nbma, node, nnode, nbr_nbma)) { | |
e16d030c | 295 | EVENT_OFF(nbr_nbma->t_poll); |
d62a17ae | 296 | |
297 | if (nbr_nbma->nbr) { | |
298 | nbr_nbma->nbr->nbr_nbma = NULL; | |
299 | nbr_nbma->nbr = NULL; | |
300 | } | |
301 | ||
302 | nbr_nbma->oi = NULL; | |
303 | ||
304 | listnode_delete(oi->nbr_nbma, nbr_nbma); | |
718e3744 | 305 | } |
306 | ||
d62a17ae | 307 | /* send Neighbor event KillNbr to all associated neighbors. */ |
fe61ceae | 308 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) { |
d62a17ae | 309 | if ((nbr = rn->info) != NULL) |
310 | if (nbr != oi->nbr_self) | |
311 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
fe61ceae | 312 | } |
d62a17ae | 313 | |
314 | /* Cleanup Link State Acknowlegdment list. */ | |
315 | for (ALL_LIST_ELEMENTS(oi->ls_ack, node, nnode, lsa)) | |
316 | ospf_lsa_unlock(&lsa); /* oi->ls_ack */ | |
317 | list_delete_all_node(oi->ls_ack); | |
318 | ||
319 | oi->crypt_seqnum = 0; | |
320 | ||
321 | /* Empty link state update queue */ | |
322 | ospf_ls_upd_queue_empty(oi); | |
323 | ||
324 | /* Reset pseudo neighbor. */ | |
325 | ospf_nbr_self_reset(oi, oi->ospf->router_id); | |
718e3744 | 326 | } |
327 | ||
d62a17ae | 328 | void ospf_if_free(struct ospf_interface *oi) |
718e3744 | 329 | { |
d62a17ae | 330 | ospf_if_down(oi); |
331 | ||
36a106e0 | 332 | ospf_fifo_free(oi->obuf); |
4fc8a852 | 333 | |
d62a17ae | 334 | assert(oi->state == ISM_Down); |
335 | ||
336 | ospf_opaque_type9_lsa_term(oi); | |
337 | ||
338 | QOBJ_UNREG(oi); | |
339 | ||
340 | /* Free Pseudo Neighbour */ | |
341 | ospf_nbr_delete(oi->nbr_self); | |
718e3744 | 342 | |
d62a17ae | 343 | route_table_finish(oi->nbrs); |
344 | route_table_finish(oi->ls_upd_queue); | |
718e3744 | 345 | |
d62a17ae | 346 | /* Free any lists that should be freed */ |
6a154c88 | 347 | list_delete(&oi->nbr_nbma); |
718e3744 | 348 | |
6a154c88 DL |
349 | list_delete(&oi->ls_ack); |
350 | list_delete(&oi->ls_ack_direct.ls_ack); | |
ae19c240 | 351 | |
b5a8894d CS |
352 | if (IS_DEBUG_OSPF_EVENT) |
353 | zlog_debug("%s: ospf interface %s vrf %s id %u deleted", | |
096f7609 IR |
354 | __func__, oi->ifp->name, oi->ifp->vrf->name, |
355 | oi->ifp->vrf->vrf_id); | |
b5a8894d | 356 | |
d62a17ae | 357 | ospf_delete_from_if(oi->ifp, oi); |
718e3744 | 358 | |
d62a17ae | 359 | listnode_delete(oi->ospf->oiflist, oi); |
360 | listnode_delete(oi->area->oiflist, oi); | |
718e3744 | 361 | |
332beb64 | 362 | event_cancel_event(master, oi); |
cfd670f3 | 363 | |
d62a17ae | 364 | memset(oi, 0, sizeof(*oi)); |
365 | XFREE(MTYPE_OSPF_IF, oi); | |
718e3744 | 366 | } |
367 | ||
d62a17ae | 368 | int ospf_if_is_up(struct ospf_interface *oi) |
718e3744 | 369 | { |
d62a17ae | 370 | return if_is_up(oi->ifp); |
718e3744 | 371 | } |
372 | ||
d62a17ae | 373 | struct ospf_interface *ospf_if_exists(struct ospf_interface *oic) |
374 | { | |
375 | struct listnode *node; | |
376 | struct ospf *ospf; | |
377 | struct ospf_interface *oi; | |
2db3d05d | 378 | |
b5a8894d CS |
379 | if (!oic) |
380 | return NULL; | |
381 | ||
382 | ospf = oic->ospf; | |
383 | if (ospf == NULL) | |
d62a17ae | 384 | return NULL; |
2db3d05d | 385 | |
d62a17ae | 386 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) |
387 | if (oi == oic) | |
388 | return oi; | |
1eb8ef25 | 389 | |
d62a17ae | 390 | return NULL; |
2db3d05d | 391 | } |
392 | ||
c81ee5c9 | 393 | /* Lookup OSPF interface by router LSA posistion */ |
d62a17ae | 394 | struct ospf_interface *ospf_if_lookup_by_lsa_pos(struct ospf_area *area, |
395 | int lsa_pos) | |
c81ee5c9 | 396 | { |
d62a17ae | 397 | struct listnode *node; |
398 | struct ospf_interface *oi; | |
c81ee5c9 | 399 | |
d62a17ae | 400 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) { |
401 | if (lsa_pos >= oi->lsa_pos_beg && lsa_pos < oi->lsa_pos_end) | |
402 | return oi; | |
403 | } | |
404 | return NULL; | |
c81ee5c9 JT |
405 | } |
406 | ||
d62a17ae | 407 | struct ospf_interface *ospf_if_lookup_by_local_addr(struct ospf *ospf, |
408 | struct interface *ifp, | |
409 | struct in_addr address) | |
718e3744 | 410 | { |
d62a17ae | 411 | struct listnode *node; |
412 | struct ospf_interface *oi; | |
413 | ||
414 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) | |
415 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
416 | if (ifp && oi->ifp != ifp) | |
417 | continue; | |
418 | ||
419 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
420 | return oi; | |
421 | } | |
422 | ||
423 | return NULL; | |
718e3744 | 424 | } |
425 | ||
d62a17ae | 426 | struct ospf_interface *ospf_if_lookup_by_prefix(struct ospf *ospf, |
427 | struct prefix_ipv4 *p) | |
718e3744 | 428 | { |
d62a17ae | 429 | struct listnode *node; |
430 | struct ospf_interface *oi; | |
431 | ||
432 | /* Check each Interface. */ | |
433 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
434 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
435 | struct prefix ptmp; | |
436 | ||
437 | prefix_copy(&ptmp, CONNECTED_PREFIX(oi->connected)); | |
438 | apply_mask(&ptmp); | |
439 | if (prefix_same(&ptmp, (struct prefix *)p)) | |
440 | return oi; | |
441 | } | |
68980084 | 442 | } |
d62a17ae | 443 | return NULL; |
718e3744 | 444 | } |
445 | ||
05cf46ba | 446 | /* determine receiving interface by ifp and source address */ |
d62a17ae | 447 | struct ospf_interface *ospf_if_lookup_recv_if(struct ospf *ospf, |
448 | struct in_addr src, | |
449 | struct interface *ifp) | |
718e3744 | 450 | { |
d62a17ae | 451 | struct route_node *rn; |
452 | struct prefix_ipv4 addr; | |
5136e672 | 453 | struct ospf_interface *oi, *match, *unnumbered_match; |
d62a17ae | 454 | |
455 | addr.family = AF_INET; | |
456 | addr.prefix = src; | |
457 | addr.prefixlen = IPV4_MAX_BITLEN; | |
458 | ||
5136e672 | 459 | match = unnumbered_match = NULL; |
d62a17ae | 460 | |
461 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
462 | oi = rn->info; | |
463 | ||
464 | if (!oi) /* oi can be NULL for PtP aliases */ | |
465 | continue; | |
466 | ||
467 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
468 | continue; | |
469 | ||
608c8870 | 470 | if (if_is_loopback(oi->ifp)) |
d62a17ae | 471 | continue; |
472 | ||
473 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
5136e672 | 474 | unnumbered_match = oi; |
d62a17ae | 475 | else if (prefix_match(CONNECTED_PREFIX(oi->connected), |
476 | (struct prefix *)&addr)) { | |
9d303b37 DL |
477 | if ((match == NULL) || (match->address->prefixlen |
478 | < oi->address->prefixlen)) | |
d62a17ae | 479 | match = oi; |
480 | } | |
718e3744 | 481 | } |
718e3744 | 482 | |
5136e672 DS |
483 | if (match) |
484 | return match; | |
485 | ||
486 | return unnumbered_match; | |
718e3744 | 487 | } |
6b0655a2 | 488 | |
fb617d18 DS |
489 | void ospf_interface_fifo_flush(struct ospf_interface *oi) |
490 | { | |
491 | struct ospf *ospf = oi->ospf; | |
492 | ||
493 | ospf_fifo_flush(oi->obuf); | |
494 | ||
495 | if (oi->on_write_q) { | |
496 | listnode_delete(ospf->oi_write_q, oi); | |
497 | if (list_isempty(ospf->oi_write_q)) | |
e16d030c | 498 | EVENT_OFF(ospf->t_write); |
fb617d18 DS |
499 | oi->on_write_q = 0; |
500 | } | |
501 | } | |
502 | ||
85c8ef06 CS |
503 | static void ospf_if_reset_stats(struct ospf_interface *oi) |
504 | { | |
505 | oi->hello_in = oi->hello_out = 0; | |
506 | oi->db_desc_in = oi->db_desc_out = 0; | |
507 | oi->ls_req_in = oi->ls_req_out = 0; | |
508 | oi->ls_upd_in = oi->ls_upd_out = 0; | |
509 | oi->ls_ack_in = oi->ls_ack_out = 0; | |
510 | } | |
511 | ||
d62a17ae | 512 | void ospf_if_stream_unset(struct ospf_interface *oi) |
718e3744 | 513 | { |
36a106e0 | 514 | /* flush the interface packet queue */ |
fb617d18 | 515 | ospf_interface_fifo_flush(oi); |
36a106e0 DS |
516 | /*reset protocol stats */ |
517 | ospf_if_reset_stats(oi); | |
718e3744 | 518 | } |
68980084 | 519 | |
6b0655a2 | 520 | |
d62a17ae | 521 | static struct ospf_if_params *ospf_new_if_params(void) |
718e3744 | 522 | { |
d62a17ae | 523 | struct ospf_if_params *oip; |
524 | ||
525 | oip = XCALLOC(MTYPE_OSPF_IF_PARAMS, sizeof(struct ospf_if_params)); | |
526 | ||
d62a17ae | 527 | UNSET_IF_PARAM(oip, output_cost_cmd); |
528 | UNSET_IF_PARAM(oip, transmit_delay); | |
529 | UNSET_IF_PARAM(oip, retransmit_interval); | |
530 | UNSET_IF_PARAM(oip, passive_interface); | |
531 | UNSET_IF_PARAM(oip, v_hello); | |
532 | UNSET_IF_PARAM(oip, fast_hello); | |
0c05ceae | 533 | UNSET_IF_PARAM(oip, v_gr_hello_delay); |
d62a17ae | 534 | UNSET_IF_PARAM(oip, v_wait); |
535 | UNSET_IF_PARAM(oip, priority); | |
536 | UNSET_IF_PARAM(oip, type); | |
537 | UNSET_IF_PARAM(oip, auth_simple); | |
538 | UNSET_IF_PARAM(oip, auth_crypt); | |
539 | UNSET_IF_PARAM(oip, auth_type); | |
bf617538 | 540 | UNSET_IF_PARAM(oip, if_area); |
d62a17ae | 541 | |
542 | oip->auth_crypt = list_new(); | |
543 | ||
544 | oip->network_lsa_seqnum = htonl(OSPF_INITIAL_SEQUENCE_NUMBER); | |
182d6bdc | 545 | oip->is_v_wait_set = false; |
d62a17ae | 546 | |
bc97889b | 547 | oip->ptp_dmvpn = 0; |
0d8ef047 | 548 | oip->p2mp_delay_reflood = OSPF_P2MP_DELAY_REFLOOD_DEFAULT; |
bc97889b | 549 | |
d62a17ae | 550 | return oip; |
718e3744 | 551 | } |
552 | ||
659f4e40 RZ |
553 | static void ospf_del_if_params(struct interface *ifp, |
554 | struct ospf_if_params *oip) | |
718e3744 | 555 | { |
6a154c88 | 556 | list_delete(&oip->auth_crypt); |
659f4e40 | 557 | ospf_interface_disable_bfd(ifp, oip); |
132a782e | 558 | ldp_sync_info_free(&(oip->ldp_sync_info)); |
d62a17ae | 559 | XFREE(MTYPE_OSPF_IF_PARAMS, oip); |
718e3744 | 560 | } |
561 | ||
d62a17ae | 562 | void ospf_free_if_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 563 | { |
d62a17ae | 564 | struct ospf_if_params *oip; |
565 | struct prefix_ipv4 p; | |
566 | struct route_node *rn; | |
567 | ||
568 | p.family = AF_INET; | |
936fbaef | 569 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 570 | p.prefix = addr; |
571 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
572 | if (!rn || !rn->info) | |
573 | return; | |
574 | ||
575 | oip = rn->info; | |
576 | route_unlock_node(rn); | |
577 | ||
578 | if (!OSPF_IF_PARAM_CONFIGURED(oip, output_cost_cmd) | |
579 | && !OSPF_IF_PARAM_CONFIGURED(oip, transmit_delay) | |
580 | && !OSPF_IF_PARAM_CONFIGURED(oip, retransmit_interval) | |
581 | && !OSPF_IF_PARAM_CONFIGURED(oip, passive_interface) | |
582 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_hello) | |
583 | && !OSPF_IF_PARAM_CONFIGURED(oip, fast_hello) | |
584 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_wait) | |
585 | && !OSPF_IF_PARAM_CONFIGURED(oip, priority) | |
586 | && !OSPF_IF_PARAM_CONFIGURED(oip, type) | |
587 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_simple) | |
588 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_type) | |
bf617538 | 589 | && !OSPF_IF_PARAM_CONFIGURED(oip, if_area) |
2917d36b | 590 | && listcount(oip->auth_crypt) == 0) { |
659f4e40 | 591 | ospf_del_if_params(ifp, oip); |
d62a17ae | 592 | rn->info = NULL; |
593 | route_unlock_node(rn); | |
594 | } | |
718e3744 | 595 | } |
596 | ||
d62a17ae | 597 | struct ospf_if_params *ospf_lookup_if_params(struct interface *ifp, |
598 | struct in_addr addr) | |
718e3744 | 599 | { |
d62a17ae | 600 | struct prefix_ipv4 p; |
601 | struct route_node *rn; | |
602 | ||
603 | p.family = AF_INET; | |
936fbaef | 604 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 605 | p.prefix = addr; |
606 | ||
607 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
608 | ||
609 | if (rn) { | |
610 | route_unlock_node(rn); | |
611 | return rn->info; | |
612 | } | |
613 | ||
614 | return NULL; | |
718e3744 | 615 | } |
616 | ||
d62a17ae | 617 | struct ospf_if_params *ospf_get_if_params(struct interface *ifp, |
618 | struct in_addr addr) | |
718e3744 | 619 | { |
d62a17ae | 620 | struct prefix_ipv4 p; |
621 | struct route_node *rn; | |
622 | ||
623 | p.family = AF_INET; | |
936fbaef | 624 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 625 | p.prefix = addr; |
a6435618 | 626 | apply_mask_ipv4(&p); |
d62a17ae | 627 | |
628 | rn = route_node_get(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
629 | ||
630 | if (rn->info == NULL) | |
631 | rn->info = ospf_new_if_params(); | |
632 | else | |
633 | route_unlock_node(rn); | |
634 | ||
635 | return rn->info; | |
718e3744 | 636 | } |
637 | ||
d62a17ae | 638 | void ospf_if_update_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 639 | { |
d62a17ae | 640 | struct route_node *rn; |
641 | struct ospf_interface *oi; | |
642 | ||
643 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
644 | if ((oi = rn->info) == NULL) | |
645 | continue; | |
646 | ||
647 | if (IPV4_ADDR_SAME(&oi->address->u.prefix4, &addr)) | |
648 | oi->params = ospf_lookup_if_params( | |
649 | ifp, oi->address->u.prefix4); | |
650 | } | |
718e3744 | 651 | } |
652 | ||
d62a17ae | 653 | int ospf_if_new_hook(struct interface *ifp) |
718e3744 | 654 | { |
d62a17ae | 655 | int rc = 0; |
656 | ||
657 | ifp->info = XCALLOC(MTYPE_OSPF_IF_INFO, sizeof(struct ospf_if_info)); | |
658 | ||
04a0401f MS |
659 | IF_OSPF_IF_INFO(ifp)->oii_fd = -1; |
660 | ||
d62a17ae | 661 | IF_OIFS(ifp) = route_table_init(); |
662 | IF_OIFS_PARAMS(ifp) = route_table_init(); | |
663 | ||
664 | IF_DEF_PARAMS(ifp) = ospf_new_if_params(); | |
665 | ||
666 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), transmit_delay); | |
667 | IF_DEF_PARAMS(ifp)->transmit_delay = OSPF_TRANSMIT_DELAY_DEFAULT; | |
668 | ||
669 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), retransmit_interval); | |
670 | IF_DEF_PARAMS(ifp)->retransmit_interval = | |
671 | OSPF_RETRANSMIT_INTERVAL_DEFAULT; | |
672 | ||
673 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), priority); | |
674 | IF_DEF_PARAMS(ifp)->priority = OSPF_ROUTER_PRIORITY_DEFAULT; | |
675 | ||
676 | IF_DEF_PARAMS(ifp)->mtu_ignore = OSPF_MTU_IGNORE_DEFAULT; | |
677 | ||
678 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_hello); | |
679 | IF_DEF_PARAMS(ifp)->v_hello = OSPF_HELLO_INTERVAL_DEFAULT; | |
680 | ||
681 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), fast_hello); | |
682 | IF_DEF_PARAMS(ifp)->fast_hello = OSPF_FAST_HELLO_DEFAULT; | |
683 | ||
0c05ceae RW |
684 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_gr_hello_delay); |
685 | IF_DEF_PARAMS(ifp)->v_gr_hello_delay = OSPF_HELLO_DELAY_DEFAULT; | |
686 | ||
d62a17ae | 687 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_wait); |
688 | IF_DEF_PARAMS(ifp)->v_wait = OSPF_ROUTER_DEAD_INTERVAL_DEFAULT; | |
689 | ||
690 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_simple); | |
691 | memset(IF_DEF_PARAMS(ifp)->auth_simple, 0, OSPF_AUTH_SIMPLE_SIZE); | |
692 | ||
693 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_type); | |
694 | IF_DEF_PARAMS(ifp)->auth_type = OSPF_AUTH_NOTSET; | |
695 | ||
696 | rc = ospf_opaque_new_if(ifp); | |
697 | return rc; | |
718e3744 | 698 | } |
699 | ||
d62a17ae | 700 | static int ospf_if_delete_hook(struct interface *ifp) |
718e3744 | 701 | { |
d62a17ae | 702 | int rc = 0; |
703 | struct route_node *rn; | |
04a0401f MS |
704 | struct ospf_if_info *oii; |
705 | ||
d62a17ae | 706 | rc = ospf_opaque_del_if(ifp); |
940b01aa | 707 | |
e2134a79 RZ |
708 | /* |
709 | * This function must be called before `route_table_finish` due to | |
710 | * BFD integration need to iterate over the interface neighbors to | |
711 | * remove all registrations. | |
712 | */ | |
713 | ospf_del_if_params(ifp, IF_DEF_PARAMS(ifp)); | |
714 | ||
d62a17ae | 715 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) |
716 | if (rn->info) | |
659f4e40 | 717 | ospf_del_if_params(ifp, rn->info); |
9ffde6e1 DS |
718 | |
719 | route_table_finish(IF_OIFS(ifp)); | |
d62a17ae | 720 | route_table_finish(IF_OIFS_PARAMS(ifp)); |
940b01aa | 721 | |
04a0401f MS |
722 | /* Close per-interface socket */ |
723 | oii = ifp->info; | |
724 | if (oii && oii->oii_fd > 0) { | |
725 | close(oii->oii_fd); | |
726 | oii->oii_fd = -1; | |
727 | } | |
728 | ||
d62a17ae | 729 | XFREE(MTYPE_OSPF_IF_INFO, ifp->info); |
718e3744 | 730 | |
d62a17ae | 731 | return rc; |
718e3744 | 732 | } |
733 | ||
d62a17ae | 734 | int ospf_if_is_enable(struct ospf_interface *oi) |
718e3744 | 735 | { |
608c8870 | 736 | if (!(if_is_loopback(oi->ifp))) |
d62a17ae | 737 | if (if_is_up(oi->ifp)) |
738 | return 1; | |
718e3744 | 739 | |
d62a17ae | 740 | return 0; |
718e3744 | 741 | } |
742 | ||
d62a17ae | 743 | void ospf_if_set_multicast(struct ospf_interface *oi) |
ba6454ec | 744 | { |
d62a17ae | 745 | if ((oi->state > ISM_Loopback) && (oi->type != OSPF_IFTYPE_LOOPBACK) |
746 | && (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
747 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
748 | /* The interface should belong to the OSPF-all-routers group. */ | |
749 | if (!OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS) | |
750 | && (ospf_if_add_allspfrouters(oi->ospf, oi->address, | |
751 | oi->ifp->ifindex) | |
752 | >= 0)) | |
753 | /* Set the flag only if the system call to join | |
754 | * succeeded. */ | |
755 | OI_MEMBER_JOINED(oi, MEMBER_ALLROUTERS); | |
756 | } else { | |
757 | /* The interface should NOT belong to the OSPF-all-routers | |
758 | * group. */ | |
759 | if (OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS)) { | |
760 | /* Only actually drop if this is the last reference */ | |
761 | if (OI_MEMBER_COUNT(oi, MEMBER_ALLROUTERS) == 1) | |
762 | ospf_if_drop_allspfrouters(oi->ospf, | |
763 | oi->address, | |
764 | oi->ifp->ifindex); | |
765 | /* Unset the flag regardless of whether the system call | |
766 | to leave | |
767 | the group succeeded, since it's much safer to assume | |
768 | that | |
769 | we are not a member. */ | |
770 | OI_MEMBER_LEFT(oi, MEMBER_ALLROUTERS); | |
771 | } | |
772 | } | |
773 | ||
774 | if (((oi->type == OSPF_IFTYPE_BROADCAST) | |
775 | || (oi->type == OSPF_IFTYPE_POINTOPOINT)) | |
776 | && ((oi->state == ISM_DR) || (oi->state == ISM_Backup)) | |
777 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
778 | /* The interface should belong to the OSPF-designated-routers | |
779 | * group. */ | |
780 | if (!OI_MEMBER_CHECK(oi, MEMBER_DROUTERS) | |
781 | && (ospf_if_add_alldrouters(oi->ospf, oi->address, | |
782 | oi->ifp->ifindex) | |
783 | >= 0)) | |
784 | /* Set the flag only if the system call to join | |
785 | * succeeded. */ | |
786 | OI_MEMBER_JOINED(oi, MEMBER_DROUTERS); | |
787 | } else { | |
788 | /* The interface should NOT belong to the | |
789 | * OSPF-designated-routers group */ | |
790 | if (OI_MEMBER_CHECK(oi, MEMBER_DROUTERS)) { | |
791 | /* drop only if last reference */ | |
792 | if (OI_MEMBER_COUNT(oi, MEMBER_DROUTERS) == 1) | |
793 | ospf_if_drop_alldrouters(oi->ospf, oi->address, | |
794 | oi->ifp->ifindex); | |
795 | ||
796 | /* Unset the flag regardless of whether the system call | |
797 | to leave | |
798 | the group succeeded, since it's much safer to assume | |
799 | that | |
800 | we are not a member. */ | |
801 | OI_MEMBER_LEFT(oi, MEMBER_DROUTERS); | |
802 | } | |
803 | } | |
ba6454ec | 804 | } |
805 | ||
d62a17ae | 806 | int ospf_if_up(struct ospf_interface *oi) |
718e3744 | 807 | { |
d62a17ae | 808 | if (oi == NULL) |
809 | return 0; | |
810 | ||
811 | if (oi->type == OSPF_IFTYPE_LOOPBACK) | |
812 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_LoopInd); | |
813 | else { | |
d62a17ae | 814 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_InterfaceUp); |
815 | } | |
816 | ||
817 | return 1; | |
718e3744 | 818 | } |
819 | ||
d62a17ae | 820 | int ospf_if_down(struct ospf_interface *oi) |
718e3744 | 821 | { |
df074ec3 | 822 | struct ospf *ospf; |
effee187 DS |
823 | struct route_node *rn; |
824 | struct ospf_route *or; | |
825 | struct listnode *nh; | |
826 | struct ospf_path *op; | |
df074ec3 | 827 | |
d62a17ae | 828 | if (oi == NULL) |
829 | return 0; | |
718e3744 | 830 | |
df074ec3 | 831 | ospf = oi->ospf; |
832 | ||
833 | /* Cease the HELPER role for all the neighbours | |
834 | * of this interface. | |
835 | */ | |
836 | if (ospf->is_helper_supported) { | |
837 | struct route_node *rn = NULL; | |
838 | ||
839 | if (ospf_interface_neighbor_count(oi)) { | |
840 | for (rn = route_top(oi->nbrs); rn; | |
841 | rn = route_next(rn)) { | |
842 | struct ospf_neighbor *nbr = NULL; | |
843 | ||
844 | if (!rn->info) | |
845 | continue; | |
846 | ||
847 | nbr = rn->info; | |
848 | ||
849 | if (OSPF_GR_IS_ACTIVE_HELPER(nbr)) | |
850 | ospf_gr_helper_exit( | |
851 | nbr, OSPF_GR_HELPER_TOPO_CHG); | |
852 | } | |
853 | } | |
854 | } | |
855 | ||
d62a17ae | 856 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); |
857 | /* delete position in router LSA */ | |
858 | oi->lsa_pos_beg = 0; | |
859 | oi->lsa_pos_end = 0; | |
860 | /* Shutdown packet reception and sending */ | |
861 | ospf_if_stream_unset(oi); | |
718e3744 | 862 | |
d4e66f14 TS |
863 | if (!ospf->new_table) |
864 | return 1; | |
effee187 DS |
865 | for (rn = route_top(ospf->new_table); rn; rn = route_next(rn)) { |
866 | or = rn->info; | |
867 | ||
868 | if (!or) | |
869 | continue; | |
870 | ||
871 | for (nh = listhead(or->paths); nh; | |
872 | nh = listnextnode_unchecked(nh)) { | |
873 | op = listgetdata(nh); | |
874 | if (op->ifindex == oi->ifp->ifindex) { | |
875 | or->changed = true; | |
876 | break; | |
877 | } | |
878 | } | |
879 | } | |
880 | ||
d62a17ae | 881 | return 1; |
718e3744 | 882 | } |
883 | ||
6b0655a2 | 884 | |
718e3744 | 885 | /* Virtual Link related functions. */ |
886 | ||
d62a17ae | 887 | struct ospf_vl_data *ospf_vl_data_new(struct ospf_area *area, |
888 | struct in_addr vl_peer) | |
718e3744 | 889 | { |
d62a17ae | 890 | struct ospf_vl_data *vl_data; |
718e3744 | 891 | |
d62a17ae | 892 | vl_data = XCALLOC(MTYPE_OSPF_VL_DATA, sizeof(struct ospf_vl_data)); |
718e3744 | 893 | |
d62a17ae | 894 | vl_data->vl_peer.s_addr = vl_peer.s_addr; |
895 | vl_data->vl_area_id = area->area_id; | |
896 | vl_data->vl_area_id_fmt = area->area_id_fmt; | |
718e3744 | 897 | |
d62a17ae | 898 | return vl_data; |
718e3744 | 899 | } |
900 | ||
d62a17ae | 901 | void ospf_vl_data_free(struct ospf_vl_data *vl_data) |
718e3744 | 902 | { |
d62a17ae | 903 | XFREE(MTYPE_OSPF_VL_DATA, vl_data); |
718e3744 | 904 | } |
905 | ||
d7c0a89a | 906 | unsigned int vlink_count = 0; |
718e3744 | 907 | |
d62a17ae | 908 | struct ospf_interface *ospf_vl_new(struct ospf *ospf, |
909 | struct ospf_vl_data *vl_data) | |
718e3744 | 910 | { |
d62a17ae | 911 | struct ospf_interface *voi; |
912 | struct interface *vi; | |
bcc24579 | 913 | char ifname[INTERFACE_NAMSIZ]; |
d62a17ae | 914 | struct ospf_area *area; |
915 | struct in_addr area_id; | |
916 | struct connected *co; | |
917 | struct prefix_ipv4 *p; | |
918 | ||
919 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 920 | zlog_debug("%s: (%s): Start", __func__, ospf_get_name(ospf)); |
d62a17ae | 921 | if (vlink_count == OSPF_VL_MAX_COUNT) { |
922 | if (IS_DEBUG_OSPF_EVENT) | |
923 | zlog_debug( | |
29448075 | 924 | "%s: Alarm: cannot create more than OSPF_MAX_VL_COUNT virtual links", |
925 | __func__); | |
926 | ||
d62a17ae | 927 | return NULL; |
928 | } | |
929 | ||
930 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 931 | zlog_debug("%s: creating pseudo zebra interface vrf id %u", |
932 | __func__, ospf->vrf_id); | |
d62a17ae | 933 | |
2ec42b85 | 934 | snprintf(ifname, sizeof(ifname), "VLINK%u", vlink_count); |
f60a1188 | 935 | vi = if_get_by_name(ifname, ospf->vrf_id, ospf->name); |
d62a17ae | 936 | /* |
f60a1188 | 937 | * if_get_by_name sets ZEBRA_INTERFACE_LINKDETECTION |
d62a17ae | 938 | * virtual links don't need this. |
939 | */ | |
940 | UNSET_FLAG(vi->status, ZEBRA_INTERFACE_LINKDETECTION); | |
941 | co = connected_new(); | |
942 | co->ifp = vi; | |
943 | listnode_add(vi->connected, co); | |
944 | ||
945 | p = prefix_ipv4_new(); | |
946 | p->family = AF_INET; | |
975a328e | 947 | p->prefix.s_addr = INADDR_ANY; |
d62a17ae | 948 | p->prefixlen = 0; |
949 | ||
950 | co->address = (struct prefix *)p; | |
951 | ||
952 | voi = ospf_if_new(ospf, vi, co->address); | |
953 | if (voi == NULL) { | |
954 | if (IS_DEBUG_OSPF_EVENT) | |
955 | zlog_debug( | |
29448075 | 956 | "%s: Alarm: OSPF int structure is not created", |
957 | __func__); | |
958 | ||
d62a17ae | 959 | return NULL; |
960 | } | |
961 | voi->connected = co; | |
962 | voi->vl_data = vl_data; | |
963 | voi->ifp->mtu = OSPF_VL_MTU; | |
964 | voi->type = OSPF_IFTYPE_VIRTUALLINK; | |
965 | ||
966 | vlink_count++; | |
967 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 968 | zlog_debug("%s: Created name: %s set if->name to %s", __func__, |
969 | ifname, vi->name); | |
d62a17ae | 970 | |
975a328e | 971 | area_id.s_addr = INADDR_ANY; |
d62a17ae | 972 | area = ospf_area_get(ospf, area_id); |
973 | voi->area = area; | |
974 | ||
975 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 976 | zlog_debug("%s: set associated area to the backbone", __func__); |
d62a17ae | 977 | |
978 | /* Add pseudo neighbor. */ | |
979 | ospf_nbr_self_reset(voi, voi->ospf->router_id); | |
980 | ||
981 | ospf_area_add_if(voi->area, voi); | |
982 | ||
d62a17ae | 983 | if (IS_DEBUG_OSPF_EVENT) |
29448075 | 984 | zlog_debug("%s: Stop", __func__); |
d62a17ae | 985 | return voi; |
718e3744 | 986 | } |
987 | ||
d62a17ae | 988 | static void ospf_vl_if_delete(struct ospf_vl_data *vl_data) |
718e3744 | 989 | { |
7a004ccf | 990 | struct interface *ifp = vl_data->vl_oi->ifp; |
ce27a13e | 991 | struct vrf *vrf = ifp->vrf; |
7a004ccf | 992 | |
975a328e | 993 | vl_data->vl_oi->address->u.prefix4.s_addr = INADDR_ANY; |
d62a17ae | 994 | vl_data->vl_oi->address->prefixlen = 0; |
995 | ospf_if_free(vl_data->vl_oi); | |
7a004ccf | 996 | if_delete(&ifp); |
ce27a13e IR |
997 | if (!vrf_is_enabled(vrf)) |
998 | vrf_delete(vrf); | |
718e3744 | 999 | } |
1000 | ||
19ce7d5e PG |
1001 | /* for a defined area, count the number of configured vl |
1002 | */ | |
1003 | int ospf_vl_count(struct ospf *ospf, struct ospf_area *area) | |
1004 | { | |
1005 | int count = 0; | |
1006 | struct ospf_vl_data *vl_data; | |
1007 | struct listnode *node; | |
1008 | ||
1009 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
1010 | if (area | |
1011 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1012 | continue; | |
1013 | count++; | |
1014 | } | |
1015 | return count; | |
1016 | } | |
1017 | ||
9c27ef9b PJ |
1018 | /* Look up vl_data for given peer, optionally qualified to be in the |
1019 | * specified area. NULL area returns first found.. | |
1020 | */ | |
d62a17ae | 1021 | struct ospf_vl_data *ospf_vl_lookup(struct ospf *ospf, struct ospf_area *area, |
1022 | struct in_addr vl_peer) | |
718e3744 | 1023 | { |
d62a17ae | 1024 | struct ospf_vl_data *vl_data; |
1025 | struct listnode *node; | |
1026 | ||
1027 | if (IS_DEBUG_OSPF_EVENT) { | |
96b663a3 | 1028 | zlog_debug("%s: Looking for %pI4", __func__, &vl_peer); |
d62a17ae | 1029 | if (area) |
96b663a3 MS |
1030 | zlog_debug("%s: in area %pI4", __func__, |
1031 | &area->area_id); | |
d62a17ae | 1032 | } |
1033 | ||
1034 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
1035 | if (IS_DEBUG_OSPF_EVENT) | |
96b663a3 | 1036 | zlog_debug("%s: VL %s, peer %pI4", __func__, |
d62a17ae | 1037 | vl_data->vl_oi->ifp->name, |
96b663a3 | 1038 | &vl_data->vl_peer); |
d62a17ae | 1039 | |
1040 | if (area | |
1041 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1042 | continue; | |
1043 | ||
1044 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &vl_peer)) | |
1045 | return vl_data; | |
1046 | } | |
1047 | ||
1048 | return NULL; | |
718e3744 | 1049 | } |
1050 | ||
d62a17ae | 1051 | static void ospf_vl_shutdown(struct ospf_vl_data *vl_data) |
718e3744 | 1052 | { |
d62a17ae | 1053 | struct ospf_interface *oi; |
718e3744 | 1054 | |
d62a17ae | 1055 | if ((oi = vl_data->vl_oi) == NULL) |
1056 | return; | |
718e3744 | 1057 | |
975a328e | 1058 | oi->address->u.prefix4.s_addr = INADDR_ANY; |
d62a17ae | 1059 | oi->address->prefixlen = 0; |
718e3744 | 1060 | |
d62a17ae | 1061 | UNSET_FLAG(oi->ifp->flags, IFF_UP); |
1062 | /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */ | |
1063 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); | |
718e3744 | 1064 | } |
1065 | ||
d62a17ae | 1066 | void ospf_vl_add(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 1067 | { |
d62a17ae | 1068 | listnode_add(ospf->vlinks, vl_data); |
1069 | hook_call(ospf_vl_add, vl_data); | |
718e3744 | 1070 | } |
1071 | ||
d62a17ae | 1072 | void ospf_vl_delete(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 1073 | { |
d62a17ae | 1074 | ospf_vl_shutdown(vl_data); |
1075 | ospf_vl_if_delete(vl_data); | |
718e3744 | 1076 | |
d62a17ae | 1077 | hook_call(ospf_vl_delete, vl_data); |
1078 | listnode_delete(ospf->vlinks, vl_data); | |
718e3744 | 1079 | |
d62a17ae | 1080 | ospf_vl_data_free(vl_data); |
718e3744 | 1081 | } |
1082 | ||
1d376ff5 G |
1083 | static int ospf_vl_set_params(struct ospf_area *area, |
1084 | struct ospf_vl_data *vl_data, struct vertex *v) | |
718e3744 | 1085 | { |
d62a17ae | 1086 | int changed = 0; |
1087 | struct ospf_interface *voi; | |
1088 | struct listnode *node; | |
1089 | struct vertex_parent *vp = NULL; | |
1090 | unsigned int i; | |
1091 | struct router_lsa *rl; | |
1d376ff5 | 1092 | struct ospf_interface *oi; |
d62a17ae | 1093 | |
1094 | voi = vl_data->vl_oi; | |
1095 | ||
1096 | if (voi->output_cost != v->distance) { | |
1097 | ||
1098 | voi->output_cost = v->distance; | |
1099 | changed = 1; | |
1100 | } | |
1101 | ||
1102 | for (ALL_LIST_ELEMENTS_RO(v->parents, node, vp)) { | |
1d376ff5 | 1103 | vl_data->nexthop.lsa_pos = vp->nexthop->lsa_pos; |
d62a17ae | 1104 | vl_data->nexthop.router = vp->nexthop->router; |
1105 | ||
1d376ff5 G |
1106 | /* |
1107 | * Only deal with interface data when the local | |
1108 | * (calculating) node is the SPF root node | |
1109 | */ | |
1110 | if (!area->spf_dry_run) { | |
1111 | oi = ospf_if_lookup_by_lsa_pos( | |
1112 | area, vl_data->nexthop.lsa_pos); | |
d62a17ae | 1113 | |
1d376ff5 G |
1114 | if (!IPV4_ADDR_SAME(&voi->address->u.prefix4, |
1115 | &oi->address->u.prefix4)) | |
1116 | changed = 1; | |
1117 | ||
1118 | voi->address->u.prefix4 = oi->address->u.prefix4; | |
1119 | voi->address->prefixlen = oi->address->prefixlen; | |
1120 | } | |
d62a17ae | 1121 | |
1122 | break; /* We take the first interface. */ | |
1123 | } | |
1124 | ||
1125 | rl = (struct router_lsa *)v->lsa; | |
1126 | ||
1127 | /* use SPF determined backlink index in struct vertex | |
1128 | * for virtual link destination address | |
1129 | */ | |
1130 | if (vp && vp->backlink >= 0) { | |
1131 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1132 | &rl->link[vp->backlink].link_data)) | |
1133 | changed = 1; | |
1134 | vl_data->peer_addr = rl->link[vp->backlink].link_data; | |
1135 | } else { | |
1136 | /* This is highly odd, there is no backlink index | |
1137 | * there should be due to the ospf_spf_has_link() check | |
1138 | * in SPF. Lets warn and try pick a link anyway. | |
1139 | */ | |
266469eb | 1140 | zlog_info("ospf_vl_set_params: No backlink for %s!", |
d62a17ae | 1141 | vl_data->vl_oi->ifp->name); |
1142 | for (i = 0; i < ntohs(rl->links); i++) { | |
1143 | switch (rl->link[i].type) { | |
1144 | case LSA_LINK_TYPE_VIRTUALLINK: | |
1145 | if (IS_DEBUG_OSPF_EVENT) | |
1146 | zlog_debug( | |
1147 | "found back link through VL"); | |
1148 | /* fallthru */ | |
1149 | case LSA_LINK_TYPE_TRANSIT: | |
1150 | case LSA_LINK_TYPE_POINTOPOINT: | |
1151 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1152 | &rl->link[i].link_data)) | |
1153 | changed = 1; | |
1154 | vl_data->peer_addr = rl->link[i].link_data; | |
1155 | } | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | if (IS_DEBUG_OSPF_EVENT) | |
96b663a3 | 1160 | zlog_debug("%s: %s peer address: %pI4, cost: %d,%schanged", |
d62a17ae | 1161 | __func__, vl_data->vl_oi->ifp->name, |
96b663a3 | 1162 | &vl_data->peer_addr, voi->output_cost, |
d62a17ae | 1163 | (changed ? " " : " un")); |
1164 | ||
1165 | return changed; | |
718e3744 | 1166 | } |
1167 | ||
1168 | ||
d62a17ae | 1169 | void ospf_vl_up_check(struct ospf_area *area, struct in_addr rid, |
1170 | struct vertex *v) | |
718e3744 | 1171 | { |
d62a17ae | 1172 | struct ospf *ospf = area->ospf; |
1173 | struct listnode *node; | |
1174 | struct ospf_vl_data *vl_data; | |
1175 | struct ospf_interface *oi; | |
1176 | ||
1177 | if (IS_DEBUG_OSPF_EVENT) { | |
29448075 | 1178 | zlog_debug("%s: Start", __func__); |
1179 | zlog_debug("%s: Router ID is %pI4 Area is %pI4", __func__, &rid, | |
96b663a3 | 1180 | &area->area_id); |
718e3744 | 1181 | } |
1182 | ||
d62a17ae | 1183 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { |
1184 | if (IS_DEBUG_OSPF_EVENT) { | |
96b663a3 | 1185 | zlog_debug("%s: considering VL, %s in area %pI4", |
d62a17ae | 1186 | __func__, vl_data->vl_oi->ifp->name, |
96b663a3 MS |
1187 | &vl_data->vl_area_id); |
1188 | zlog_debug("%s: peer ID: %pI4", __func__, | |
1189 | &vl_data->vl_peer); | |
d62a17ae | 1190 | } |
1191 | ||
1192 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &rid) | |
1193 | && IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) { | |
1194 | oi = vl_data->vl_oi; | |
1195 | SET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1196 | ||
1197 | if (IS_DEBUG_OSPF_EVENT) | |
29448075 | 1198 | zlog_debug("%s: this VL matched", __func__); |
d62a17ae | 1199 | |
1200 | if (oi->state == ISM_Down) { | |
1201 | if (IS_DEBUG_OSPF_EVENT) | |
1202 | zlog_debug( | |
29448075 | 1203 | "%s: VL is down, waking it up", |
1204 | __func__); | |
d62a17ae | 1205 | SET_FLAG(oi->ifp->flags, IFF_UP); |
1206 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceUp); | |
1207 | } | |
1208 | ||
1d376ff5 | 1209 | if (ospf_vl_set_params(area, vl_data, v)) { |
d62a17ae | 1210 | if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) |
1211 | zlog_debug( | |
29448075 | 1212 | "%s: VL cost change, scheduling router lsa refresh", |
1213 | __func__); | |
d62a17ae | 1214 | if (ospf->backbone) |
1215 | ospf_router_lsa_update_area( | |
1216 | ospf->backbone); | |
1217 | else if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1218 | zlog_debug( | |
29448075 | 1219 | "%s: VL cost change, no backbone!", |
1220 | __func__); | |
d62a17ae | 1221 | } |
1222 | } | |
1223 | } | |
718e3744 | 1224 | } |
1225 | ||
d62a17ae | 1226 | void ospf_vl_unapprove(struct ospf *ospf) |
718e3744 | 1227 | { |
d62a17ae | 1228 | struct listnode *node; |
1229 | struct ospf_vl_data *vl_data; | |
718e3744 | 1230 | |
d62a17ae | 1231 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) |
1232 | UNSET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
718e3744 | 1233 | } |
1234 | ||
d62a17ae | 1235 | void ospf_vl_shut_unapproved(struct ospf *ospf) |
718e3744 | 1236 | { |
d62a17ae | 1237 | struct listnode *node, *nnode; |
1238 | struct ospf_vl_data *vl_data; | |
718e3744 | 1239 | |
d62a17ae | 1240 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) |
1241 | if (!CHECK_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED)) | |
1242 | ospf_vl_shutdown(vl_data); | |
718e3744 | 1243 | } |
1244 | ||
d62a17ae | 1245 | int ospf_full_virtual_nbrs(struct ospf_area *area) |
718e3744 | 1246 | { |
d62a17ae | 1247 | if (IS_DEBUG_OSPF_EVENT) { |
1248 | zlog_debug( | |
96b663a3 MS |
1249 | "counting fully adjacent virtual neighbors in area %pI4", |
1250 | &area->area_id); | |
d62a17ae | 1251 | zlog_debug("there are %d of them", area->full_vls); |
1252 | } | |
1253 | ||
1254 | return area->full_vls; | |
718e3744 | 1255 | } |
1256 | ||
d62a17ae | 1257 | int ospf_vls_in_area(struct ospf_area *area) |
718e3744 | 1258 | { |
d62a17ae | 1259 | struct listnode *node; |
1260 | struct ospf_vl_data *vl_data; | |
1261 | int c = 0; | |
718e3744 | 1262 | |
d62a17ae | 1263 | for (ALL_LIST_ELEMENTS_RO(area->ospf->vlinks, node, vl_data)) |
1264 | if (IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1265 | c++; | |
718e3744 | 1266 | |
d62a17ae | 1267 | return c; |
718e3744 | 1268 | } |
1269 | ||
6b0655a2 | 1270 | |
4d762f26 | 1271 | struct crypt_key *ospf_crypt_key_new(void) |
718e3744 | 1272 | { |
d62a17ae | 1273 | return XCALLOC(MTYPE_OSPF_CRYPT_KEY, sizeof(struct crypt_key)); |
718e3744 | 1274 | } |
1275 | ||
d62a17ae | 1276 | void ospf_crypt_key_add(struct list *crypt, struct crypt_key *ck) |
718e3744 | 1277 | { |
d62a17ae | 1278 | listnode_add(crypt, ck); |
718e3744 | 1279 | } |
1280 | ||
d7c0a89a | 1281 | struct crypt_key *ospf_crypt_key_lookup(struct list *auth_crypt, uint8_t key_id) |
718e3744 | 1282 | { |
d62a17ae | 1283 | struct listnode *node; |
1284 | struct crypt_key *ck; | |
718e3744 | 1285 | |
d62a17ae | 1286 | for (ALL_LIST_ELEMENTS_RO(auth_crypt, node, ck)) |
1287 | if (ck->key_id == key_id) | |
1288 | return ck; | |
718e3744 | 1289 | |
d62a17ae | 1290 | return NULL; |
718e3744 | 1291 | } |
1292 | ||
d7c0a89a | 1293 | int ospf_crypt_key_delete(struct list *auth_crypt, uint8_t key_id) |
718e3744 | 1294 | { |
d62a17ae | 1295 | struct listnode *node, *nnode; |
1296 | struct crypt_key *ck; | |
1297 | ||
1298 | for (ALL_LIST_ELEMENTS(auth_crypt, node, nnode, ck)) { | |
1299 | if (ck->key_id == key_id) { | |
1300 | listnode_delete(auth_crypt, ck); | |
1301 | XFREE(MTYPE_OSPF_CRYPT_KEY, ck); | |
1302 | return 1; | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | return 0; | |
718e3744 | 1307 | } |
1308 | ||
d7c0a89a | 1309 | uint8_t ospf_default_iftype(struct interface *ifp) |
bc18d616 | 1310 | { |
d62a17ae | 1311 | if (if_is_pointopoint(ifp)) |
1312 | return OSPF_IFTYPE_POINTOPOINT; | |
608c8870 | 1313 | else if (if_is_loopback(ifp)) |
d62a17ae | 1314 | return OSPF_IFTYPE_LOOPBACK; |
1315 | else | |
1316 | return OSPF_IFTYPE_BROADCAST; | |
bc18d616 | 1317 | } |
1318 | ||
ef7bd2a3 DS |
1319 | void ospf_if_interface(struct interface *ifp) |
1320 | { | |
1321 | hook_call(ospf_if_update, ifp); | |
1322 | } | |
1323 | ||
cbf32f74 | 1324 | uint32_t ospf_if_count_area_params(struct interface *ifp) |
138c5a74 | 1325 | { |
cbf15681 IR |
1326 | struct ospf_if_params *params; |
1327 | struct route_node *rn; | |
1328 | uint32_t count = 0; | |
cbf32f74 IR |
1329 | |
1330 | params = IF_DEF_PARAMS(ifp); | |
1331 | if (OSPF_IF_PARAM_CONFIGURED(params, if_area)) | |
1332 | count++; | |
1333 | ||
1334 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) | |
1335 | if ((params = rn->info) | |
1336 | && OSPF_IF_PARAM_CONFIGURED(params, if_area)) | |
1337 | count++; | |
1338 | ||
1339 | return count; | |
1340 | } | |
1341 | ||
1342 | static int ospf_ifp_create(struct interface *ifp) | |
1343 | { | |
1344 | struct ospf *ospf = NULL; | |
2655301d | 1345 | struct ospf_if_info *oii; |
ef7bd2a3 DS |
1346 | |
1347 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1348 | zlog_debug( | |
1349 | "Zebra: interface add %s vrf %s[%u] index %d flags %llx metric %d mtu %d speed %u", | |
096f7609 IR |
1350 | ifp->name, ifp->vrf->name, ifp->vrf->vrf_id, |
1351 | ifp->ifindex, (unsigned long long)ifp->flags, | |
1352 | ifp->metric, ifp->mtu, ifp->speed); | |
ef7bd2a3 DS |
1353 | |
1354 | assert(ifp->info); | |
1355 | ||
2655301d DS |
1356 | oii = ifp->info; |
1357 | oii->curr_mtu = ifp->mtu; | |
1358 | ||
ef7bd2a3 DS |
1359 | if (IF_DEF_PARAMS(ifp) |
1360 | && !OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS(ifp), type)) { | |
1361 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), type); | |
1362 | IF_DEF_PARAMS(ifp)->type = ospf_default_iftype(ifp); | |
1363 | } | |
1364 | ||
096f7609 | 1365 | ospf = ifp->vrf->info; |
ef7bd2a3 DS |
1366 | if (!ospf) |
1367 | return 0; | |
1368 | ||
cbf32f74 | 1369 | if (ospf_if_count_area_params(ifp) > 0) |
cbf15681 | 1370 | ospf_interface_area_set(ospf, ifp); |
cbf15681 | 1371 | |
ef7bd2a3 DS |
1372 | ospf_if_recalculate_output_cost(ifp); |
1373 | ||
1374 | ospf_if_update(ospf, ifp); | |
1375 | ||
0b4124c1 KS |
1376 | if (HAS_LINK_PARAMS(ifp)) |
1377 | ospf_mpls_te_update_if(ifp); | |
1378 | ||
ef7bd2a3 DS |
1379 | hook_call(ospf_if_update, ifp); |
1380 | ||
138c5a74 DS |
1381 | return 0; |
1382 | } | |
1383 | ||
1384 | static int ospf_ifp_up(struct interface *ifp) | |
1385 | { | |
ddbf3e60 DS |
1386 | struct ospf_interface *oi; |
1387 | struct route_node *rn; | |
85d25587 | 1388 | struct ospf_if_info *oii = ifp->info; |
04a0401f MS |
1389 | struct ospf *ospf; |
1390 | ||
1391 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1392 | zlog_debug("Zebra: Interface[%s] state change to up.", | |
1393 | ifp->name); | |
1394 | ||
1395 | /* Open per-intf write socket if configured */ | |
1396 | ospf = ifp->vrf->info; | |
1397 | if (ospf && ospf->intf_socket_enabled) | |
1398 | ospf_ifp_sock_init(ifp); | |
ddbf3e60 | 1399 | |
85d25587 | 1400 | ospf_if_recalculate_output_cost(ifp); |
ddbf3e60 | 1401 | |
85d25587 | 1402 | if (oii && oii->curr_mtu != ifp->mtu) { |
ddbf3e60 DS |
1403 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) |
1404 | zlog_debug( | |
85d25587 DS |
1405 | "Zebra: Interface[%s] MTU change %u -> %u.", |
1406 | ifp->name, oii->curr_mtu, ifp->mtu); | |
ddbf3e60 | 1407 | |
85d25587 DS |
1408 | oii->curr_mtu = ifp->mtu; |
1409 | /* Must reset the interface (simulate down/up) when MTU | |
1410 | * changes. */ | |
1411 | ospf_if_reset(ifp); | |
ddbf3e60 | 1412 | |
ddbf3e60 DS |
1413 | return 0; |
1414 | } | |
1415 | ||
ddbf3e60 DS |
1416 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { |
1417 | if ((oi = rn->info) == NULL) | |
1418 | continue; | |
1419 | ||
1420 | ospf_if_up(oi); | |
1421 | } | |
1422 | ||
0b4124c1 KS |
1423 | if (HAS_LINK_PARAMS(ifp)) |
1424 | ospf_mpls_te_update_if(ifp); | |
1425 | ||
138c5a74 DS |
1426 | return 0; |
1427 | } | |
1428 | ||
1429 | static int ospf_ifp_down(struct interface *ifp) | |
1430 | { | |
b0b69e59 DS |
1431 | struct ospf_interface *oi; |
1432 | struct route_node *node; | |
1433 | ||
1434 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1435 | zlog_debug("Zebra: Interface[%s] state change to down.", | |
1436 | ifp->name); | |
1437 | ||
1438 | for (node = route_top(IF_OIFS(ifp)); node; node = route_next(node)) { | |
1439 | if ((oi = node->info) == NULL) | |
1440 | continue; | |
1441 | ospf_if_down(oi); | |
1442 | } | |
1443 | ||
04a0401f MS |
1444 | /* Close per-interface write socket if configured */ |
1445 | ospf_ifp_sock_close(ifp); | |
1446 | ||
138c5a74 DS |
1447 | return 0; |
1448 | } | |
1449 | ||
1450 | static int ospf_ifp_destroy(struct interface *ifp) | |
1451 | { | |
cbf15681 | 1452 | struct ospf *ospf; |
3c3c3252 DS |
1453 | struct route_node *rn; |
1454 | ||
1455 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1456 | zlog_debug( | |
1457 | "Zebra: interface delete %s vrf %s[%u] index %d flags %llx metric %d mtu %d", | |
096f7609 IR |
1458 | ifp->name, ifp->vrf->name, ifp->vrf->vrf_id, |
1459 | ifp->ifindex, (unsigned long long)ifp->flags, | |
1460 | ifp->metric, ifp->mtu); | |
3c3c3252 DS |
1461 | |
1462 | hook_call(ospf_if_delete, ifp); | |
1463 | ||
096f7609 | 1464 | ospf = ifp->vrf->info; |
cbf15681 | 1465 | if (ospf) { |
cbf32f74 | 1466 | if (ospf_if_count_area_params(ifp) > 0) |
cbf15681 | 1467 | ospf_interface_area_unset(ospf, ifp); |
cbf15681 IR |
1468 | } |
1469 | ||
3c3c3252 DS |
1470 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) |
1471 | if (rn->info) | |
1472 | ospf_if_free((struct ospf_interface *)rn->info); | |
1473 | ||
138c5a74 DS |
1474 | return 0; |
1475 | } | |
1476 | ||
be418160 | 1477 | /* Resetting ospf hello timer */ |
1478 | void ospf_reset_hello_timer(struct interface *ifp, struct in_addr addr, | |
1479 | bool is_addr) | |
1480 | { | |
1481 | struct route_node *rn; | |
1482 | ||
1483 | if (is_addr) { | |
1484 | struct prefix p; | |
1485 | struct ospf_interface *oi = NULL; | |
1486 | ||
1487 | p.u.prefix4 = addr; | |
1488 | p.family = AF_INET; | |
46a8c343 | 1489 | p.prefixlen = IPV4_MAX_BITLEN; |
be418160 | 1490 | |
1491 | oi = ospf_if_table_lookup(ifp, &p); | |
1492 | ||
1493 | if (oi) { | |
1494 | /* Send hello before restart the hello timer | |
1495 | * to avoid session flaps in case of bigger | |
1496 | * hello interval configurations. | |
1497 | */ | |
1498 | ospf_hello_send(oi); | |
1499 | ||
1500 | /* Restart hello timer for this interface */ | |
e16d030c | 1501 | EVENT_OFF(oi->t_hello); |
be418160 | 1502 | OSPF_HELLO_TIMER_ON(oi); |
1503 | } | |
1504 | ||
1505 | return; | |
1506 | } | |
1507 | ||
1508 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
1509 | struct ospf_interface *oi = rn->info; | |
1510 | ||
1511 | if (!oi) | |
1512 | continue; | |
1513 | ||
1514 | /* If hello interval configured on this oi, don't restart. */ | |
1515 | if (OSPF_IF_PARAM_CONFIGURED(oi->params, v_hello)) | |
1516 | continue; | |
1517 | ||
1518 | /* Send hello before restart the hello timer | |
1519 | * to avoid session flaps in case of bigger | |
1520 | * hello interval configurations. | |
1521 | */ | |
1522 | ospf_hello_send(oi); | |
1523 | ||
1524 | /* Restart the hello timer. */ | |
e16d030c | 1525 | EVENT_OFF(oi->t_hello); |
be418160 | 1526 | OSPF_HELLO_TIMER_ON(oi); |
1527 | } | |
1528 | } | |
1529 | ||
4d762f26 | 1530 | void ospf_if_init(void) |
718e3744 | 1531 | { |
138c5a74 DS |
1532 | if_zapi_callbacks(ospf_ifp_create, ospf_ifp_up, |
1533 | ospf_ifp_down, ospf_ifp_destroy); | |
1534 | ||
d62a17ae | 1535 | /* Initialize Zebra interface data structure. */ |
ce19a04a DL |
1536 | hook_register_prio(if_add, 0, ospf_if_new_hook); |
1537 | hook_register_prio(if_del, 0, ospf_if_delete_hook); | |
718e3744 | 1538 | } |