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718e3744 | 1 | /* |
2 | * OSPF Interface functions. | |
3 | * Copyright (C) 1999, 2000 Toshiaki Takada | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
896014f4 | 6 | * |
718e3744 | 7 | * GNU Zebra is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published | |
9 | * by the Free Software Foundation; either version 2, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "thread.h" | |
25 | #include "linklist.h" | |
26 | #include "prefix.h" | |
27 | #include "if.h" | |
28 | #include "table.h" | |
29 | #include "memory.h" | |
30 | #include "command.h" | |
31 | #include "stream.h" | |
32 | #include "log.h" | |
c0325cfa | 33 | #include "zclient.h" |
7f342629 | 34 | #include "bfd.h" |
718e3744 | 35 | |
68980084 | 36 | #include "ospfd/ospfd.h" |
718e3744 | 37 | #include "ospfd/ospf_spf.h" |
38 | #include "ospfd/ospf_interface.h" | |
39 | #include "ospfd/ospf_ism.h" | |
40 | #include "ospfd/ospf_asbr.h" | |
41 | #include "ospfd/ospf_lsa.h" | |
42 | #include "ospfd/ospf_lsdb.h" | |
43 | #include "ospfd/ospf_neighbor.h" | |
44 | #include "ospfd/ospf_nsm.h" | |
45 | #include "ospfd/ospf_packet.h" | |
46 | #include "ospfd/ospf_abr.h" | |
718e3744 | 47 | #include "ospfd/ospf_network.h" |
48 | #include "ospfd/ospf_dump.h" | |
718e3744 | 49 | |
ae19c240 | 50 | DEFINE_QOBJ_TYPE(ospf_interface) |
d62a17ae | 51 | DEFINE_HOOK(ospf_vl_add, (struct ospf_vl_data * vd), (vd)) |
52 | DEFINE_HOOK(ospf_vl_delete, (struct ospf_vl_data * vd), (vd)) | |
6b0655a2 | 53 | |
2bc7673f CS |
54 | int ospf_interface_neighbor_count(struct ospf_interface *oi) |
55 | { | |
56 | int count = 0; | |
57 | struct route_node *rn; | |
58 | struct ospf_neighbor *nbr = NULL; | |
59 | ||
60 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) { | |
61 | nbr = rn->info; | |
62 | if (nbr) { | |
63 | /* Do not show myself. */ | |
64 | if (nbr == oi->nbr_self) | |
65 | continue; | |
66 | /* Down state is not shown. */ | |
67 | if (nbr->state == NSM_Down) | |
68 | continue; | |
69 | count++; | |
70 | } | |
71 | } | |
72 | ||
73 | return count; | |
74 | } | |
75 | ||
d62a17ae | 76 | int ospf_if_get_output_cost(struct ospf_interface *oi) |
718e3744 | 77 | { |
d62a17ae | 78 | /* If all else fails, use default OSPF cost */ |
79 | u_int32_t cost; | |
80 | u_int32_t bw, refbw; | |
81 | ||
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 | ||
92 | /* A specifed ip ospf cost overrides a calculated one. */ | |
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 { | |
99 | cost = (u_int32_t)((double)refbw / (double)bw + (double)0.5); | |
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 | { |
d62a17ae | 111 | u_int32_t newcost; |
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; | |
178 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
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; | |
195 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
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; | |
213 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
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 | ||
228 | if ((oi = ospf_if_table_lookup(ifp, p)) == NULL) { | |
229 | oi = XCALLOC(MTYPE_OSPF_IF, sizeof(struct ospf_interface)); | |
230 | memset(oi, 0, sizeof(struct ospf_interface)); | |
231 | } else | |
232 | return oi; | |
233 | ||
234 | /* Set zebra interface pointer. */ | |
235 | oi->ifp = ifp; | |
236 | oi->address = p; | |
237 | ||
238 | ospf_add_to_if(ifp, oi); | |
239 | listnode_add(ospf->oiflist, oi); | |
240 | ||
241 | /* Initialize neighbor list. */ | |
242 | oi->nbrs = route_table_init(); | |
243 | ||
244 | /* Initialize static neighbor list. */ | |
245 | oi->nbr_nbma = list_new(); | |
246 | ||
247 | /* Initialize Link State Acknowledgment list. */ | |
248 | oi->ls_ack = list_new(); | |
249 | oi->ls_ack_direct.ls_ack = list_new(); | |
250 | ||
251 | /* Set default values. */ | |
252 | ospf_if_reset_variables(oi); | |
253 | ||
254 | /* Set pseudo neighbor to Null */ | |
255 | oi->nbr_self = NULL; | |
256 | ||
257 | oi->ls_upd_queue = route_table_init(); | |
258 | oi->t_ls_upd_event = NULL; | |
259 | oi->t_ls_ack_direct = NULL; | |
260 | ||
261 | oi->crypt_seqnum = time(NULL); | |
262 | ||
263 | ospf_opaque_type9_lsa_init(oi); | |
264 | ||
265 | oi->ospf = ospf; | |
266 | QOBJ_REG(oi, ospf_interface); | |
267 | ||
b5a8894d CS |
268 | if (IS_DEBUG_OSPF_EVENT) |
269 | zlog_debug("%s: ospf interface %s vrf %s id %u created", | |
270 | __PRETTY_FUNCTION__, ifp->name, | |
271 | ospf_vrf_id_to_name(ospf->vrf_id), ospf->vrf_id); | |
272 | ||
d62a17ae | 273 | return oi; |
718e3744 | 274 | } |
275 | ||
276 | /* Restore an interface to its pre UP state | |
277 | Used from ism_interface_down only */ | |
d62a17ae | 278 | void ospf_if_cleanup(struct ospf_interface *oi) |
718e3744 | 279 | { |
d62a17ae | 280 | struct route_node *rn; |
281 | struct listnode *node, *nnode; | |
282 | struct ospf_neighbor *nbr; | |
283 | struct ospf_nbr_nbma *nbr_nbma; | |
284 | struct ospf_lsa *lsa; | |
285 | ||
286 | /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */ | |
287 | /* delete all static neighbors attached to this interface */ | |
288 | for (ALL_LIST_ELEMENTS(oi->nbr_nbma, node, nnode, nbr_nbma)) { | |
289 | OSPF_POLL_TIMER_OFF(nbr_nbma->t_poll); | |
290 | ||
291 | if (nbr_nbma->nbr) { | |
292 | nbr_nbma->nbr->nbr_nbma = NULL; | |
293 | nbr_nbma->nbr = NULL; | |
294 | } | |
295 | ||
296 | nbr_nbma->oi = NULL; | |
297 | ||
298 | listnode_delete(oi->nbr_nbma, nbr_nbma); | |
718e3744 | 299 | } |
300 | ||
d62a17ae | 301 | /* send Neighbor event KillNbr to all associated neighbors. */ |
302 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) | |
303 | if ((nbr = rn->info) != NULL) | |
304 | if (nbr != oi->nbr_self) | |
305 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
306 | ||
307 | /* Cleanup Link State Acknowlegdment list. */ | |
308 | for (ALL_LIST_ELEMENTS(oi->ls_ack, node, nnode, lsa)) | |
309 | ospf_lsa_unlock(&lsa); /* oi->ls_ack */ | |
310 | list_delete_all_node(oi->ls_ack); | |
311 | ||
312 | oi->crypt_seqnum = 0; | |
313 | ||
314 | /* Empty link state update queue */ | |
315 | ospf_ls_upd_queue_empty(oi); | |
316 | ||
317 | /* Reset pseudo neighbor. */ | |
318 | ospf_nbr_self_reset(oi, oi->ospf->router_id); | |
718e3744 | 319 | } |
320 | ||
d62a17ae | 321 | void ospf_if_free(struct ospf_interface *oi) |
718e3744 | 322 | { |
d62a17ae | 323 | ospf_if_down(oi); |
324 | ||
325 | assert(oi->state == ISM_Down); | |
326 | ||
327 | ospf_opaque_type9_lsa_term(oi); | |
328 | ||
329 | QOBJ_UNREG(oi); | |
330 | ||
331 | /* Free Pseudo Neighbour */ | |
332 | ospf_nbr_delete(oi->nbr_self); | |
718e3744 | 333 | |
d62a17ae | 334 | route_table_finish(oi->nbrs); |
335 | route_table_finish(oi->ls_upd_queue); | |
718e3744 | 336 | |
d62a17ae | 337 | /* Free any lists that should be freed */ |
acdf5e25 | 338 | list_delete_and_null(&oi->nbr_nbma); |
718e3744 | 339 | |
acdf5e25 DS |
340 | list_delete_and_null(&oi->ls_ack); |
341 | list_delete_and_null(&oi->ls_ack_direct.ls_ack); | |
ae19c240 | 342 | |
b5a8894d CS |
343 | if (IS_DEBUG_OSPF_EVENT) |
344 | zlog_debug("%s: ospf interface %s vrf %s id %u deleted", | |
345 | __PRETTY_FUNCTION__, oi->ifp->name, | |
346 | ospf_vrf_id_to_name(oi->ifp->vrf_id), | |
347 | oi->ifp->vrf_id); | |
348 | ||
d62a17ae | 349 | ospf_delete_from_if(oi->ifp, oi); |
718e3744 | 350 | |
d62a17ae | 351 | listnode_delete(oi->ospf->oiflist, oi); |
352 | listnode_delete(oi->area->oiflist, oi); | |
718e3744 | 353 | |
d62a17ae | 354 | thread_cancel_event(master, oi); |
cfd670f3 | 355 | |
d62a17ae | 356 | memset(oi, 0, sizeof(*oi)); |
357 | XFREE(MTYPE_OSPF_IF, oi); | |
718e3744 | 358 | } |
359 | ||
d62a17ae | 360 | int ospf_if_is_up(struct ospf_interface *oi) |
718e3744 | 361 | { |
d62a17ae | 362 | return if_is_up(oi->ifp); |
718e3744 | 363 | } |
364 | ||
d62a17ae | 365 | struct ospf_interface *ospf_if_exists(struct ospf_interface *oic) |
366 | { | |
367 | struct listnode *node; | |
368 | struct ospf *ospf; | |
369 | struct ospf_interface *oi; | |
2db3d05d | 370 | |
b5a8894d CS |
371 | if (!oic) |
372 | return NULL; | |
373 | ||
374 | ospf = oic->ospf; | |
375 | if (ospf == NULL) | |
d62a17ae | 376 | return NULL; |
2db3d05d | 377 | |
d62a17ae | 378 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) |
379 | if (oi == oic) | |
380 | return oi; | |
1eb8ef25 | 381 | |
d62a17ae | 382 | return NULL; |
2db3d05d | 383 | } |
384 | ||
c81ee5c9 | 385 | /* Lookup OSPF interface by router LSA posistion */ |
d62a17ae | 386 | struct ospf_interface *ospf_if_lookup_by_lsa_pos(struct ospf_area *area, |
387 | int lsa_pos) | |
c81ee5c9 | 388 | { |
d62a17ae | 389 | struct listnode *node; |
390 | struct ospf_interface *oi; | |
c81ee5c9 | 391 | |
d62a17ae | 392 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) { |
393 | if (lsa_pos >= oi->lsa_pos_beg && lsa_pos < oi->lsa_pos_end) | |
394 | return oi; | |
395 | } | |
396 | return NULL; | |
c81ee5c9 JT |
397 | } |
398 | ||
d62a17ae | 399 | struct ospf_interface *ospf_if_lookup_by_local_addr(struct ospf *ospf, |
400 | struct interface *ifp, | |
401 | struct in_addr address) | |
718e3744 | 402 | { |
d62a17ae | 403 | struct listnode *node; |
404 | struct ospf_interface *oi; | |
405 | ||
406 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) | |
407 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
408 | if (ifp && oi->ifp != ifp) | |
409 | continue; | |
410 | ||
411 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
412 | return oi; | |
413 | } | |
414 | ||
415 | return NULL; | |
718e3744 | 416 | } |
417 | ||
d62a17ae | 418 | struct ospf_interface *ospf_if_lookup_by_prefix(struct ospf *ospf, |
419 | struct prefix_ipv4 *p) | |
718e3744 | 420 | { |
d62a17ae | 421 | struct listnode *node; |
422 | struct ospf_interface *oi; | |
423 | ||
424 | /* Check each Interface. */ | |
425 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
426 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
427 | struct prefix ptmp; | |
428 | ||
429 | prefix_copy(&ptmp, CONNECTED_PREFIX(oi->connected)); | |
430 | apply_mask(&ptmp); | |
431 | if (prefix_same(&ptmp, (struct prefix *)p)) | |
432 | return oi; | |
433 | } | |
68980084 | 434 | } |
d62a17ae | 435 | return NULL; |
718e3744 | 436 | } |
437 | ||
05cf46ba | 438 | /* determine receiving interface by ifp and source address */ |
d62a17ae | 439 | struct ospf_interface *ospf_if_lookup_recv_if(struct ospf *ospf, |
440 | struct in_addr src, | |
441 | struct interface *ifp) | |
718e3744 | 442 | { |
d62a17ae | 443 | struct route_node *rn; |
444 | struct prefix_ipv4 addr; | |
445 | struct ospf_interface *oi, *match; | |
446 | ||
447 | addr.family = AF_INET; | |
448 | addr.prefix = src; | |
449 | addr.prefixlen = IPV4_MAX_BITLEN; | |
450 | ||
451 | match = NULL; | |
452 | ||
453 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
454 | oi = rn->info; | |
455 | ||
456 | if (!oi) /* oi can be NULL for PtP aliases */ | |
457 | continue; | |
458 | ||
459 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
460 | continue; | |
461 | ||
0c74bbe0 | 462 | if (if_is_loopback(oi->ifp) || if_is_vrf(oi->ifp)) |
d62a17ae | 463 | continue; |
464 | ||
465 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
466 | match = oi; | |
467 | else if (prefix_match(CONNECTED_PREFIX(oi->connected), | |
468 | (struct prefix *)&addr)) { | |
9d303b37 DL |
469 | if ((match == NULL) || (match->address->prefixlen |
470 | < oi->address->prefixlen)) | |
d62a17ae | 471 | match = oi; |
472 | } | |
718e3744 | 473 | } |
718e3744 | 474 | |
d62a17ae | 475 | return match; |
718e3744 | 476 | } |
6b0655a2 | 477 | |
85c8ef06 CS |
478 | static void ospf_if_reset_stats(struct ospf_interface *oi) |
479 | { | |
480 | oi->hello_in = oi->hello_out = 0; | |
481 | oi->db_desc_in = oi->db_desc_out = 0; | |
482 | oi->ls_req_in = oi->ls_req_out = 0; | |
483 | oi->ls_upd_in = oi->ls_upd_out = 0; | |
484 | oi->ls_ack_in = oi->ls_ack_out = 0; | |
485 | } | |
486 | ||
d62a17ae | 487 | void ospf_if_stream_set(struct ospf_interface *oi) |
718e3744 | 488 | { |
d62a17ae | 489 | /* set output fifo queue. */ |
490 | if (oi->obuf == NULL) | |
491 | oi->obuf = ospf_fifo_new(); | |
718e3744 | 492 | } |
493 | ||
d62a17ae | 494 | void ospf_if_stream_unset(struct ospf_interface *oi) |
718e3744 | 495 | { |
d62a17ae | 496 | struct ospf *ospf = oi->ospf; |
497 | ||
498 | if (oi->obuf) { | |
499 | ospf_fifo_free(oi->obuf); | |
500 | oi->obuf = NULL; | |
501 | ||
85c8ef06 CS |
502 | /*reset protocol stats */ |
503 | ospf_if_reset_stats(oi); | |
504 | ||
d62a17ae | 505 | if (oi->on_write_q) { |
506 | listnode_delete(ospf->oi_write_q, oi); | |
507 | if (list_isempty(ospf->oi_write_q)) | |
508 | OSPF_TIMER_OFF(ospf->t_write); | |
509 | oi->on_write_q = 0; | |
510 | } | |
511 | } | |
718e3744 | 512 | } |
68980084 | 513 | |
6b0655a2 | 514 | |
d62a17ae | 515 | static struct ospf_if_params *ospf_new_if_params(void) |
718e3744 | 516 | { |
d62a17ae | 517 | struct ospf_if_params *oip; |
518 | ||
519 | oip = XCALLOC(MTYPE_OSPF_IF_PARAMS, sizeof(struct ospf_if_params)); | |
520 | ||
521 | if (!oip) | |
522 | return NULL; | |
523 | ||
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); | |
536 | ||
537 | oip->auth_crypt = list_new(); | |
538 | ||
539 | oip->network_lsa_seqnum = htonl(OSPF_INITIAL_SEQUENCE_NUMBER); | |
540 | ||
541 | return oip; | |
718e3744 | 542 | } |
543 | ||
d62a17ae | 544 | void ospf_del_if_params(struct ospf_if_params *oip) |
718e3744 | 545 | { |
affe9e99 | 546 | list_delete_and_null(&oip->auth_crypt); |
d62a17ae | 547 | bfd_info_free(&(oip->bfd_info)); |
548 | XFREE(MTYPE_OSPF_IF_PARAMS, oip); | |
718e3744 | 549 | } |
550 | ||
d62a17ae | 551 | void ospf_free_if_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 552 | { |
d62a17ae | 553 | struct ospf_if_params *oip; |
554 | struct prefix_ipv4 p; | |
555 | struct route_node *rn; | |
556 | ||
557 | p.family = AF_INET; | |
558 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
559 | p.prefix = addr; | |
560 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
561 | if (!rn || !rn->info) | |
562 | return; | |
563 | ||
564 | oip = rn->info; | |
565 | route_unlock_node(rn); | |
566 | ||
567 | if (!OSPF_IF_PARAM_CONFIGURED(oip, output_cost_cmd) | |
568 | && !OSPF_IF_PARAM_CONFIGURED(oip, transmit_delay) | |
569 | && !OSPF_IF_PARAM_CONFIGURED(oip, retransmit_interval) | |
570 | && !OSPF_IF_PARAM_CONFIGURED(oip, passive_interface) | |
571 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_hello) | |
572 | && !OSPF_IF_PARAM_CONFIGURED(oip, fast_hello) | |
573 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_wait) | |
574 | && !OSPF_IF_PARAM_CONFIGURED(oip, priority) | |
575 | && !OSPF_IF_PARAM_CONFIGURED(oip, type) | |
576 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_simple) | |
577 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_type) | |
578 | && listcount(oip->auth_crypt) == 0 | |
579 | && ntohl(oip->network_lsa_seqnum) != OSPF_INITIAL_SEQUENCE_NUMBER) { | |
580 | ospf_del_if_params(oip); | |
581 | rn->info = NULL; | |
582 | route_unlock_node(rn); | |
583 | } | |
718e3744 | 584 | } |
585 | ||
d62a17ae | 586 | struct ospf_if_params *ospf_lookup_if_params(struct interface *ifp, |
587 | struct in_addr addr) | |
718e3744 | 588 | { |
d62a17ae | 589 | struct prefix_ipv4 p; |
590 | struct route_node *rn; | |
591 | ||
592 | p.family = AF_INET; | |
593 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
594 | p.prefix = addr; | |
595 | ||
596 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
597 | ||
598 | if (rn) { | |
599 | route_unlock_node(rn); | |
600 | return rn->info; | |
601 | } | |
602 | ||
603 | return NULL; | |
718e3744 | 604 | } |
605 | ||
d62a17ae | 606 | struct ospf_if_params *ospf_get_if_params(struct interface *ifp, |
607 | struct in_addr addr) | |
718e3744 | 608 | { |
d62a17ae | 609 | struct prefix_ipv4 p; |
610 | struct route_node *rn; | |
611 | ||
612 | p.family = AF_INET; | |
613 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
614 | p.prefix = addr; | |
a6435618 | 615 | apply_mask_ipv4(&p); |
d62a17ae | 616 | |
617 | rn = route_node_get(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
618 | ||
619 | if (rn->info == NULL) | |
620 | rn->info = ospf_new_if_params(); | |
621 | else | |
622 | route_unlock_node(rn); | |
623 | ||
624 | return rn->info; | |
718e3744 | 625 | } |
626 | ||
d62a17ae | 627 | void ospf_if_update_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 628 | { |
d62a17ae | 629 | struct route_node *rn; |
630 | struct ospf_interface *oi; | |
631 | ||
632 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
633 | if ((oi = rn->info) == NULL) | |
634 | continue; | |
635 | ||
636 | if (IPV4_ADDR_SAME(&oi->address->u.prefix4, &addr)) | |
637 | oi->params = ospf_lookup_if_params( | |
638 | ifp, oi->address->u.prefix4); | |
639 | } | |
718e3744 | 640 | } |
641 | ||
d62a17ae | 642 | int ospf_if_new_hook(struct interface *ifp) |
718e3744 | 643 | { |
d62a17ae | 644 | int rc = 0; |
645 | ||
646 | ifp->info = XCALLOC(MTYPE_OSPF_IF_INFO, sizeof(struct ospf_if_info)); | |
647 | ||
648 | IF_OIFS(ifp) = route_table_init(); | |
649 | IF_OIFS_PARAMS(ifp) = route_table_init(); | |
650 | ||
651 | IF_DEF_PARAMS(ifp) = ospf_new_if_params(); | |
652 | ||
653 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), transmit_delay); | |
654 | IF_DEF_PARAMS(ifp)->transmit_delay = OSPF_TRANSMIT_DELAY_DEFAULT; | |
655 | ||
656 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), retransmit_interval); | |
657 | IF_DEF_PARAMS(ifp)->retransmit_interval = | |
658 | OSPF_RETRANSMIT_INTERVAL_DEFAULT; | |
659 | ||
660 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), priority); | |
661 | IF_DEF_PARAMS(ifp)->priority = OSPF_ROUTER_PRIORITY_DEFAULT; | |
662 | ||
663 | IF_DEF_PARAMS(ifp)->mtu_ignore = OSPF_MTU_IGNORE_DEFAULT; | |
664 | ||
665 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_hello); | |
666 | IF_DEF_PARAMS(ifp)->v_hello = OSPF_HELLO_INTERVAL_DEFAULT; | |
667 | ||
668 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), fast_hello); | |
669 | IF_DEF_PARAMS(ifp)->fast_hello = OSPF_FAST_HELLO_DEFAULT; | |
670 | ||
671 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_wait); | |
672 | IF_DEF_PARAMS(ifp)->v_wait = OSPF_ROUTER_DEAD_INTERVAL_DEFAULT; | |
673 | ||
674 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_simple); | |
675 | memset(IF_DEF_PARAMS(ifp)->auth_simple, 0, OSPF_AUTH_SIMPLE_SIZE); | |
676 | ||
677 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_type); | |
678 | IF_DEF_PARAMS(ifp)->auth_type = OSPF_AUTH_NOTSET; | |
679 | ||
680 | rc = ospf_opaque_new_if(ifp); | |
681 | return rc; | |
718e3744 | 682 | } |
683 | ||
d62a17ae | 684 | static int ospf_if_delete_hook(struct interface *ifp) |
718e3744 | 685 | { |
d62a17ae | 686 | int rc = 0; |
687 | struct route_node *rn; | |
688 | rc = ospf_opaque_del_if(ifp); | |
940b01aa | 689 | |
d62a17ae | 690 | route_table_finish(IF_OIFS(ifp)); |
940b01aa | 691 | |
d62a17ae | 692 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) |
693 | if (rn->info) | |
694 | ospf_del_if_params(rn->info); | |
695 | route_table_finish(IF_OIFS_PARAMS(ifp)); | |
940b01aa | 696 | |
d62a17ae | 697 | ospf_del_if_params((struct ospf_if_params *)IF_DEF_PARAMS(ifp)); |
698 | XFREE(MTYPE_OSPF_IF_INFO, ifp->info); | |
699 | ifp->info = NULL; | |
718e3744 | 700 | |
d62a17ae | 701 | return rc; |
718e3744 | 702 | } |
703 | ||
d62a17ae | 704 | int ospf_if_is_enable(struct ospf_interface *oi) |
718e3744 | 705 | { |
0c74bbe0 | 706 | if (!(if_is_loopback(oi->ifp) || if_is_vrf(oi->ifp))) |
d62a17ae | 707 | if (if_is_up(oi->ifp)) |
708 | return 1; | |
718e3744 | 709 | |
d62a17ae | 710 | return 0; |
718e3744 | 711 | } |
712 | ||
d62a17ae | 713 | void ospf_if_set_multicast(struct ospf_interface *oi) |
ba6454ec | 714 | { |
d62a17ae | 715 | if ((oi->state > ISM_Loopback) && (oi->type != OSPF_IFTYPE_LOOPBACK) |
716 | && (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
717 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
718 | /* The interface should belong to the OSPF-all-routers group. */ | |
719 | if (!OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS) | |
720 | && (ospf_if_add_allspfrouters(oi->ospf, oi->address, | |
721 | oi->ifp->ifindex) | |
722 | >= 0)) | |
723 | /* Set the flag only if the system call to join | |
724 | * succeeded. */ | |
725 | OI_MEMBER_JOINED(oi, MEMBER_ALLROUTERS); | |
726 | } else { | |
727 | /* The interface should NOT belong to the OSPF-all-routers | |
728 | * group. */ | |
729 | if (OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS)) { | |
730 | /* Only actually drop if this is the last reference */ | |
731 | if (OI_MEMBER_COUNT(oi, MEMBER_ALLROUTERS) == 1) | |
732 | ospf_if_drop_allspfrouters(oi->ospf, | |
733 | oi->address, | |
734 | oi->ifp->ifindex); | |
735 | /* Unset the flag regardless of whether the system call | |
736 | to leave | |
737 | the group succeeded, since it's much safer to assume | |
738 | that | |
739 | we are not a member. */ | |
740 | OI_MEMBER_LEFT(oi, MEMBER_ALLROUTERS); | |
741 | } | |
742 | } | |
743 | ||
744 | if (((oi->type == OSPF_IFTYPE_BROADCAST) | |
745 | || (oi->type == OSPF_IFTYPE_POINTOPOINT)) | |
746 | && ((oi->state == ISM_DR) || (oi->state == ISM_Backup)) | |
747 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
748 | /* The interface should belong to the OSPF-designated-routers | |
749 | * group. */ | |
750 | if (!OI_MEMBER_CHECK(oi, MEMBER_DROUTERS) | |
751 | && (ospf_if_add_alldrouters(oi->ospf, oi->address, | |
752 | oi->ifp->ifindex) | |
753 | >= 0)) | |
754 | /* Set the flag only if the system call to join | |
755 | * succeeded. */ | |
756 | OI_MEMBER_JOINED(oi, MEMBER_DROUTERS); | |
757 | } else { | |
758 | /* The interface should NOT belong to the | |
759 | * OSPF-designated-routers group */ | |
760 | if (OI_MEMBER_CHECK(oi, MEMBER_DROUTERS)) { | |
761 | /* drop only if last reference */ | |
762 | if (OI_MEMBER_COUNT(oi, MEMBER_DROUTERS) == 1) | |
763 | ospf_if_drop_alldrouters(oi->ospf, oi->address, | |
764 | oi->ifp->ifindex); | |
765 | ||
766 | /* Unset the flag regardless of whether the system call | |
767 | to leave | |
768 | the group succeeded, since it's much safer to assume | |
769 | that | |
770 | we are not a member. */ | |
771 | OI_MEMBER_LEFT(oi, MEMBER_DROUTERS); | |
772 | } | |
773 | } | |
ba6454ec | 774 | } |
775 | ||
d62a17ae | 776 | int ospf_if_up(struct ospf_interface *oi) |
718e3744 | 777 | { |
d62a17ae | 778 | if (oi == NULL) |
779 | return 0; | |
780 | ||
781 | if (oi->type == OSPF_IFTYPE_LOOPBACK) | |
782 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_LoopInd); | |
783 | else { | |
784 | ospf_if_stream_set(oi); | |
785 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_InterfaceUp); | |
786 | } | |
787 | ||
788 | return 1; | |
718e3744 | 789 | } |
790 | ||
d62a17ae | 791 | int ospf_if_down(struct ospf_interface *oi) |
718e3744 | 792 | { |
d62a17ae | 793 | if (oi == NULL) |
794 | return 0; | |
718e3744 | 795 | |
d62a17ae | 796 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); |
797 | /* delete position in router LSA */ | |
798 | oi->lsa_pos_beg = 0; | |
799 | oi->lsa_pos_end = 0; | |
800 | /* Shutdown packet reception and sending */ | |
801 | ospf_if_stream_unset(oi); | |
718e3744 | 802 | |
d62a17ae | 803 | return 1; |
718e3744 | 804 | } |
805 | ||
6b0655a2 | 806 | |
718e3744 | 807 | /* Virtual Link related functions. */ |
808 | ||
d62a17ae | 809 | struct ospf_vl_data *ospf_vl_data_new(struct ospf_area *area, |
810 | struct in_addr vl_peer) | |
718e3744 | 811 | { |
d62a17ae | 812 | struct ospf_vl_data *vl_data; |
718e3744 | 813 | |
d62a17ae | 814 | vl_data = XCALLOC(MTYPE_OSPF_VL_DATA, sizeof(struct ospf_vl_data)); |
718e3744 | 815 | |
d62a17ae | 816 | vl_data->vl_peer.s_addr = vl_peer.s_addr; |
817 | vl_data->vl_area_id = area->area_id; | |
818 | vl_data->vl_area_id_fmt = area->area_id_fmt; | |
718e3744 | 819 | |
d62a17ae | 820 | return vl_data; |
718e3744 | 821 | } |
822 | ||
d62a17ae | 823 | void ospf_vl_data_free(struct ospf_vl_data *vl_data) |
718e3744 | 824 | { |
d62a17ae | 825 | XFREE(MTYPE_OSPF_VL_DATA, vl_data); |
718e3744 | 826 | } |
827 | ||
828 | u_int vlink_count = 0; | |
829 | ||
d62a17ae | 830 | struct ospf_interface *ospf_vl_new(struct ospf *ospf, |
831 | struct ospf_vl_data *vl_data) | |
718e3744 | 832 | { |
d62a17ae | 833 | struct ospf_interface *voi; |
834 | struct interface *vi; | |
bcc24579 | 835 | char ifname[INTERFACE_NAMSIZ]; |
d62a17ae | 836 | struct ospf_area *area; |
837 | struct in_addr area_id; | |
838 | struct connected *co; | |
839 | struct prefix_ipv4 *p; | |
840 | ||
841 | if (IS_DEBUG_OSPF_EVENT) | |
842 | zlog_debug("ospf_vl_new(): Start"); | |
843 | if (vlink_count == OSPF_VL_MAX_COUNT) { | |
844 | if (IS_DEBUG_OSPF_EVENT) | |
845 | zlog_debug( | |
846 | "ospf_vl_new(): Alarm: " | |
847 | "cannot create more than OSPF_MAX_VL_COUNT virtual links"); | |
848 | return NULL; | |
849 | } | |
850 | ||
851 | if (IS_DEBUG_OSPF_EVENT) | |
996c9314 LB |
852 | zlog_debug( |
853 | "ospf_vl_new(): creating pseudo zebra interface vrf id %u", | |
854 | ospf->vrf_id); | |
d62a17ae | 855 | |
856 | snprintf(ifname, sizeof(ifname), "VLINK%d", vlink_count); | |
bcc24579 | 857 | vi = if_create(ifname, ospf->vrf_id); |
d62a17ae | 858 | /* |
859 | * if_create sets ZEBRA_INTERFACE_LINKDETECTION | |
860 | * virtual links don't need this. | |
861 | */ | |
862 | UNSET_FLAG(vi->status, ZEBRA_INTERFACE_LINKDETECTION); | |
863 | co = connected_new(); | |
864 | co->ifp = vi; | |
865 | listnode_add(vi->connected, co); | |
866 | ||
867 | p = prefix_ipv4_new(); | |
868 | p->family = AF_INET; | |
869 | p->prefix.s_addr = 0; | |
870 | p->prefixlen = 0; | |
871 | ||
872 | co->address = (struct prefix *)p; | |
873 | ||
874 | voi = ospf_if_new(ospf, vi, co->address); | |
875 | if (voi == NULL) { | |
876 | if (IS_DEBUG_OSPF_EVENT) | |
877 | zlog_debug( | |
878 | "ospf_vl_new(): Alarm: OSPF int structure is not created"); | |
879 | return NULL; | |
880 | } | |
881 | voi->connected = co; | |
882 | voi->vl_data = vl_data; | |
883 | voi->ifp->mtu = OSPF_VL_MTU; | |
884 | voi->type = OSPF_IFTYPE_VIRTUALLINK; | |
885 | ||
886 | vlink_count++; | |
887 | if (IS_DEBUG_OSPF_EVENT) | |
888 | zlog_debug("ospf_vl_new(): Created name: %s", ifname); | |
889 | if (IS_DEBUG_OSPF_EVENT) | |
890 | zlog_debug("ospf_vl_new(): set if->name to %s", vi->name); | |
891 | ||
892 | area_id.s_addr = 0; | |
893 | area = ospf_area_get(ospf, area_id); | |
894 | voi->area = area; | |
895 | ||
896 | if (IS_DEBUG_OSPF_EVENT) | |
897 | zlog_debug( | |
898 | "ospf_vl_new(): set associated area to the backbone"); | |
899 | ||
900 | /* Add pseudo neighbor. */ | |
901 | ospf_nbr_self_reset(voi, voi->ospf->router_id); | |
902 | ||
903 | ospf_area_add_if(voi->area, voi); | |
904 | ||
905 | ospf_if_stream_set(voi); | |
906 | ||
907 | if (IS_DEBUG_OSPF_EVENT) | |
908 | zlog_debug("ospf_vl_new(): Stop"); | |
909 | return voi; | |
718e3744 | 910 | } |
911 | ||
d62a17ae | 912 | static void ospf_vl_if_delete(struct ospf_vl_data *vl_data) |
718e3744 | 913 | { |
d62a17ae | 914 | struct interface *ifp = vl_data->vl_oi->ifp; |
915 | vl_data->vl_oi->address->u.prefix4.s_addr = 0; | |
916 | vl_data->vl_oi->address->prefixlen = 0; | |
917 | ospf_if_free(vl_data->vl_oi); | |
918 | if_delete(ifp); | |
919 | vlink_count--; | |
718e3744 | 920 | } |
921 | ||
9c27ef9b PJ |
922 | /* Look up vl_data for given peer, optionally qualified to be in the |
923 | * specified area. NULL area returns first found.. | |
924 | */ | |
d62a17ae | 925 | struct ospf_vl_data *ospf_vl_lookup(struct ospf *ospf, struct ospf_area *area, |
926 | struct in_addr vl_peer) | |
718e3744 | 927 | { |
d62a17ae | 928 | struct ospf_vl_data *vl_data; |
929 | struct listnode *node; | |
930 | ||
931 | if (IS_DEBUG_OSPF_EVENT) { | |
932 | zlog_debug("%s: Looking for %s", __func__, inet_ntoa(vl_peer)); | |
933 | if (area) | |
934 | zlog_debug("%s: in area %s", __func__, | |
935 | inet_ntoa(area->area_id)); | |
936 | } | |
937 | ||
938 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
939 | if (IS_DEBUG_OSPF_EVENT) | |
940 | zlog_debug("%s: VL %s, peer %s", __func__, | |
941 | vl_data->vl_oi->ifp->name, | |
942 | inet_ntoa(vl_data->vl_peer)); | |
943 | ||
944 | if (area | |
945 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
946 | continue; | |
947 | ||
948 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &vl_peer)) | |
949 | return vl_data; | |
950 | } | |
951 | ||
952 | return NULL; | |
718e3744 | 953 | } |
954 | ||
d62a17ae | 955 | static void ospf_vl_shutdown(struct ospf_vl_data *vl_data) |
718e3744 | 956 | { |
d62a17ae | 957 | struct ospf_interface *oi; |
718e3744 | 958 | |
d62a17ae | 959 | if ((oi = vl_data->vl_oi) == NULL) |
960 | return; | |
718e3744 | 961 | |
d62a17ae | 962 | oi->address->u.prefix4.s_addr = 0; |
963 | oi->address->prefixlen = 0; | |
718e3744 | 964 | |
d62a17ae | 965 | UNSET_FLAG(oi->ifp->flags, IFF_UP); |
966 | /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */ | |
967 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); | |
718e3744 | 968 | } |
969 | ||
d62a17ae | 970 | void ospf_vl_add(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 971 | { |
d62a17ae | 972 | listnode_add(ospf->vlinks, vl_data); |
973 | hook_call(ospf_vl_add, vl_data); | |
718e3744 | 974 | } |
975 | ||
d62a17ae | 976 | void ospf_vl_delete(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 977 | { |
d62a17ae | 978 | ospf_vl_shutdown(vl_data); |
979 | ospf_vl_if_delete(vl_data); | |
718e3744 | 980 | |
d62a17ae | 981 | hook_call(ospf_vl_delete, vl_data); |
982 | listnode_delete(ospf->vlinks, vl_data); | |
718e3744 | 983 | |
d62a17ae | 984 | ospf_vl_data_free(vl_data); |
718e3744 | 985 | } |
986 | ||
d62a17ae | 987 | static int ospf_vl_set_params(struct ospf_vl_data *vl_data, struct vertex *v) |
718e3744 | 988 | { |
d62a17ae | 989 | int changed = 0; |
990 | struct ospf_interface *voi; | |
991 | struct listnode *node; | |
992 | struct vertex_parent *vp = NULL; | |
993 | unsigned int i; | |
994 | struct router_lsa *rl; | |
995 | ||
996 | voi = vl_data->vl_oi; | |
997 | ||
998 | if (voi->output_cost != v->distance) { | |
999 | ||
1000 | voi->output_cost = v->distance; | |
1001 | changed = 1; | |
1002 | } | |
1003 | ||
1004 | for (ALL_LIST_ELEMENTS_RO(v->parents, node, vp)) { | |
1005 | vl_data->nexthop.oi = vp->nexthop->oi; | |
1006 | vl_data->nexthop.router = vp->nexthop->router; | |
1007 | ||
1008 | if (!IPV4_ADDR_SAME(&voi->address->u.prefix4, | |
1009 | &vl_data->nexthop.oi->address->u.prefix4)) | |
1010 | changed = 1; | |
1011 | ||
1012 | voi->address->u.prefix4 = | |
1013 | vl_data->nexthop.oi->address->u.prefix4; | |
1014 | voi->address->prefixlen = | |
1015 | vl_data->nexthop.oi->address->prefixlen; | |
1016 | ||
1017 | break; /* We take the first interface. */ | |
1018 | } | |
1019 | ||
1020 | rl = (struct router_lsa *)v->lsa; | |
1021 | ||
1022 | /* use SPF determined backlink index in struct vertex | |
1023 | * for virtual link destination address | |
1024 | */ | |
1025 | if (vp && vp->backlink >= 0) { | |
1026 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1027 | &rl->link[vp->backlink].link_data)) | |
1028 | changed = 1; | |
1029 | vl_data->peer_addr = rl->link[vp->backlink].link_data; | |
1030 | } else { | |
1031 | /* This is highly odd, there is no backlink index | |
1032 | * there should be due to the ospf_spf_has_link() check | |
1033 | * in SPF. Lets warn and try pick a link anyway. | |
1034 | */ | |
1035 | zlog_warn("ospf_vl_set_params: No backlink for %s!", | |
1036 | vl_data->vl_oi->ifp->name); | |
1037 | for (i = 0; i < ntohs(rl->links); i++) { | |
1038 | switch (rl->link[i].type) { | |
1039 | case LSA_LINK_TYPE_VIRTUALLINK: | |
1040 | if (IS_DEBUG_OSPF_EVENT) | |
1041 | zlog_debug( | |
1042 | "found back link through VL"); | |
1043 | /* fallthru */ | |
1044 | case LSA_LINK_TYPE_TRANSIT: | |
1045 | case LSA_LINK_TYPE_POINTOPOINT: | |
1046 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1047 | &rl->link[i].link_data)) | |
1048 | changed = 1; | |
1049 | vl_data->peer_addr = rl->link[i].link_data; | |
1050 | } | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | if (IS_DEBUG_OSPF_EVENT) | |
1055 | zlog_debug("%s: %s peer address: %s, cost: %d,%schanged", | |
1056 | __func__, vl_data->vl_oi->ifp->name, | |
1057 | inet_ntoa(vl_data->peer_addr), voi->output_cost, | |
1058 | (changed ? " " : " un")); | |
1059 | ||
1060 | return changed; | |
718e3744 | 1061 | } |
1062 | ||
1063 | ||
d62a17ae | 1064 | void ospf_vl_up_check(struct ospf_area *area, struct in_addr rid, |
1065 | struct vertex *v) | |
718e3744 | 1066 | { |
d62a17ae | 1067 | struct ospf *ospf = area->ospf; |
1068 | struct listnode *node; | |
1069 | struct ospf_vl_data *vl_data; | |
1070 | struct ospf_interface *oi; | |
1071 | ||
1072 | if (IS_DEBUG_OSPF_EVENT) { | |
1073 | zlog_debug("ospf_vl_up_check(): Start"); | |
1074 | zlog_debug("ospf_vl_up_check(): Router ID is %s", | |
1075 | inet_ntoa(rid)); | |
1076 | zlog_debug("ospf_vl_up_check(): Area is %s", | |
1077 | inet_ntoa(area->area_id)); | |
718e3744 | 1078 | } |
1079 | ||
d62a17ae | 1080 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { |
1081 | if (IS_DEBUG_OSPF_EVENT) { | |
1082 | zlog_debug("%s: considering VL, %s in area %s", | |
1083 | __func__, vl_data->vl_oi->ifp->name, | |
1084 | inet_ntoa(vl_data->vl_area_id)); | |
1085 | zlog_debug("%s: peer ID: %s", __func__, | |
1086 | inet_ntoa(vl_data->vl_peer)); | |
1087 | } | |
1088 | ||
1089 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &rid) | |
1090 | && IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) { | |
1091 | oi = vl_data->vl_oi; | |
1092 | SET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1093 | ||
1094 | if (IS_DEBUG_OSPF_EVENT) | |
1095 | zlog_debug( | |
1096 | "ospf_vl_up_check(): this VL matched"); | |
1097 | ||
1098 | if (oi->state == ISM_Down) { | |
1099 | if (IS_DEBUG_OSPF_EVENT) | |
1100 | zlog_debug( | |
1101 | "ospf_vl_up_check(): VL is down, waking it up"); | |
1102 | SET_FLAG(oi->ifp->flags, IFF_UP); | |
1103 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceUp); | |
1104 | } | |
1105 | ||
1106 | if (ospf_vl_set_params(vl_data, v)) { | |
1107 | if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1108 | zlog_debug( | |
1109 | "ospf_vl_up_check: VL cost change," | |
1110 | " scheduling router lsa refresh"); | |
1111 | if (ospf->backbone) | |
1112 | ospf_router_lsa_update_area( | |
1113 | ospf->backbone); | |
1114 | else if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1115 | zlog_debug( | |
1116 | "ospf_vl_up_check: VL cost change, no backbone!"); | |
1117 | } | |
1118 | } | |
1119 | } | |
718e3744 | 1120 | } |
1121 | ||
d62a17ae | 1122 | void ospf_vl_unapprove(struct ospf *ospf) |
718e3744 | 1123 | { |
d62a17ae | 1124 | struct listnode *node; |
1125 | struct ospf_vl_data *vl_data; | |
718e3744 | 1126 | |
d62a17ae | 1127 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) |
1128 | UNSET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
718e3744 | 1129 | } |
1130 | ||
d62a17ae | 1131 | void ospf_vl_shut_unapproved(struct ospf *ospf) |
718e3744 | 1132 | { |
d62a17ae | 1133 | struct listnode *node, *nnode; |
1134 | struct ospf_vl_data *vl_data; | |
718e3744 | 1135 | |
d62a17ae | 1136 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) |
1137 | if (!CHECK_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED)) | |
1138 | ospf_vl_shutdown(vl_data); | |
718e3744 | 1139 | } |
1140 | ||
d62a17ae | 1141 | int ospf_full_virtual_nbrs(struct ospf_area *area) |
718e3744 | 1142 | { |
d62a17ae | 1143 | if (IS_DEBUG_OSPF_EVENT) { |
1144 | zlog_debug( | |
1145 | "counting fully adjacent virtual neighbors in area %s", | |
1146 | inet_ntoa(area->area_id)); | |
1147 | zlog_debug("there are %d of them", area->full_vls); | |
1148 | } | |
1149 | ||
1150 | return area->full_vls; | |
718e3744 | 1151 | } |
1152 | ||
d62a17ae | 1153 | int ospf_vls_in_area(struct ospf_area *area) |
718e3744 | 1154 | { |
d62a17ae | 1155 | struct listnode *node; |
1156 | struct ospf_vl_data *vl_data; | |
1157 | int c = 0; | |
718e3744 | 1158 | |
d62a17ae | 1159 | for (ALL_LIST_ELEMENTS_RO(area->ospf->vlinks, node, vl_data)) |
1160 | if (IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1161 | c++; | |
718e3744 | 1162 | |
d62a17ae | 1163 | return c; |
718e3744 | 1164 | } |
1165 | ||
6b0655a2 | 1166 | |
d62a17ae | 1167 | struct crypt_key *ospf_crypt_key_new() |
718e3744 | 1168 | { |
d62a17ae | 1169 | return XCALLOC(MTYPE_OSPF_CRYPT_KEY, sizeof(struct crypt_key)); |
718e3744 | 1170 | } |
1171 | ||
d62a17ae | 1172 | void ospf_crypt_key_add(struct list *crypt, struct crypt_key *ck) |
718e3744 | 1173 | { |
d62a17ae | 1174 | listnode_add(crypt, ck); |
718e3744 | 1175 | } |
1176 | ||
d62a17ae | 1177 | struct crypt_key *ospf_crypt_key_lookup(struct list *auth_crypt, u_char key_id) |
718e3744 | 1178 | { |
d62a17ae | 1179 | struct listnode *node; |
1180 | struct crypt_key *ck; | |
718e3744 | 1181 | |
d62a17ae | 1182 | for (ALL_LIST_ELEMENTS_RO(auth_crypt, node, ck)) |
1183 | if (ck->key_id == key_id) | |
1184 | return ck; | |
718e3744 | 1185 | |
d62a17ae | 1186 | return NULL; |
718e3744 | 1187 | } |
1188 | ||
d62a17ae | 1189 | int ospf_crypt_key_delete(struct list *auth_crypt, u_char key_id) |
718e3744 | 1190 | { |
d62a17ae | 1191 | struct listnode *node, *nnode; |
1192 | struct crypt_key *ck; | |
1193 | ||
1194 | for (ALL_LIST_ELEMENTS(auth_crypt, node, nnode, ck)) { | |
1195 | if (ck->key_id == key_id) { | |
1196 | listnode_delete(auth_crypt, ck); | |
1197 | XFREE(MTYPE_OSPF_CRYPT_KEY, ck); | |
1198 | return 1; | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | return 0; | |
718e3744 | 1203 | } |
1204 | ||
d62a17ae | 1205 | u_char ospf_default_iftype(struct interface *ifp) |
bc18d616 | 1206 | { |
d62a17ae | 1207 | if (if_is_pointopoint(ifp)) |
1208 | return OSPF_IFTYPE_POINTOPOINT; | |
0c74bbe0 | 1209 | else if (if_is_loopback(ifp) || if_is_vrf(ifp)) |
d62a17ae | 1210 | return OSPF_IFTYPE_LOOPBACK; |
1211 | else | |
1212 | return OSPF_IFTYPE_BROADCAST; | |
bc18d616 | 1213 | } |
1214 | ||
d62a17ae | 1215 | void ospf_if_init() |
718e3744 | 1216 | { |
d62a17ae | 1217 | /* Initialize Zebra interface data structure. */ |
ce19a04a DL |
1218 | hook_register_prio(if_add, 0, ospf_if_new_hook); |
1219 | hook_register_prio(if_del, 0, ospf_if_delete_hook); | |
718e3744 | 1220 | } |