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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 | |
d62a17ae | 54 | int ospf_if_get_output_cost(struct ospf_interface *oi) |
718e3744 | 55 | { |
d62a17ae | 56 | /* If all else fails, use default OSPF cost */ |
57 | u_int32_t cost; | |
58 | u_int32_t bw, refbw; | |
59 | ||
60 | /* ifp speed and bw can be 0 in some platforms, use ospf default bw | |
61 | if bw is configured under interface it would be used. | |
62 | */ | |
63 | if (!oi->ifp->bandwidth && oi->ifp->speed) | |
64 | bw = oi->ifp->speed; | |
65 | else | |
66 | bw = oi->ifp->bandwidth ? oi->ifp->bandwidth | |
67 | : OSPF_DEFAULT_BANDWIDTH; | |
68 | refbw = oi->ospf->ref_bandwidth; | |
69 | ||
70 | /* A specifed ip ospf cost overrides a calculated one. */ | |
71 | if (OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS(oi->ifp), output_cost_cmd) | |
72 | || OSPF_IF_PARAM_CONFIGURED(oi->params, output_cost_cmd)) | |
73 | cost = OSPF_IF_PARAM(oi, output_cost_cmd); | |
74 | /* See if a cost can be calculated from the zebra processes | |
75 | interface bandwidth field. */ | |
76 | else { | |
77 | cost = (u_int32_t)((double)refbw / (double)bw + (double)0.5); | |
78 | if (cost < 1) | |
79 | cost = 1; | |
80 | else if (cost > 65535) | |
81 | cost = 65535; | |
82 | } | |
83 | ||
84 | return cost; | |
718e3744 | 85 | } |
86 | ||
d62a17ae | 87 | void ospf_if_recalculate_output_cost(struct interface *ifp) |
718e3744 | 88 | { |
d62a17ae | 89 | u_int32_t newcost; |
90 | struct route_node *rn; | |
91 | ||
92 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
93 | struct ospf_interface *oi; | |
94 | ||
95 | if ((oi = rn->info) == NULL) | |
96 | continue; | |
97 | ||
98 | newcost = ospf_if_get_output_cost(oi); | |
99 | ||
100 | /* Is actual output cost changed? */ | |
101 | if (oi->output_cost != newcost) { | |
102 | oi->output_cost = newcost; | |
103 | ospf_router_lsa_update_area(oi->area); | |
104 | } | |
718e3744 | 105 | } |
718e3744 | 106 | } |
107 | ||
d62a17ae | 108 | /* Simulate down/up on the interface. This is needed, for example, when |
a608bbf2 | 109 | the MTU changes. */ |
d62a17ae | 110 | void ospf_if_reset(struct interface *ifp) |
a608bbf2 | 111 | { |
d62a17ae | 112 | struct route_node *rn; |
113 | ||
114 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
115 | struct ospf_interface *oi; | |
116 | ||
117 | if ((oi = rn->info) == NULL) | |
118 | continue; | |
119 | ||
120 | ospf_if_down(oi); | |
121 | ospf_if_up(oi); | |
122 | } | |
a608bbf2 | 123 | } |
124 | ||
d62a17ae | 125 | void ospf_if_reset_variables(struct ospf_interface *oi) |
718e3744 | 126 | { |
d62a17ae | 127 | /* Set default values. */ |
128 | /* don't clear this flag. oi->flag = OSPF_IF_DISABLE; */ | |
718e3744 | 129 | |
d62a17ae | 130 | if (oi->vl_data) |
131 | oi->type = OSPF_IFTYPE_VIRTUALLINK; | |
132 | else | |
133 | /* preserve network-type */ | |
134 | if (oi->type != OSPF_IFTYPE_NBMA) | |
135 | oi->type = OSPF_IFTYPE_BROADCAST; | |
718e3744 | 136 | |
d62a17ae | 137 | oi->state = ISM_Down; |
718e3744 | 138 | |
d62a17ae | 139 | oi->crypt_seqnum = 0; |
718e3744 | 140 | |
d62a17ae | 141 | /* This must be short, (less than RxmtInterval) |
142 | - RFC 2328 Section 13.5 para 3. Set to 1 second to avoid Acks being | |
143 | held back for too long - MAG */ | |
144 | oi->v_ls_ack = 1; | |
718e3744 | 145 | } |
146 | ||
20916fba | 147 | /* lookup oi for specified prefix/ifp */ |
d62a17ae | 148 | struct ospf_interface *ospf_if_table_lookup(struct interface *ifp, |
149 | struct prefix *prefix) | |
20916fba | 150 | { |
d62a17ae | 151 | struct prefix p; |
152 | struct route_node *rn; | |
153 | struct ospf_interface *rninfo = NULL; | |
154 | ||
155 | p = *prefix; | |
156 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
157 | ||
158 | /* route_node_get implicitely locks */ | |
159 | if ((rn = route_node_lookup(IF_OIFS(ifp), &p))) { | |
160 | rninfo = (struct ospf_interface *)rn->info; | |
161 | route_unlock_node(rn); | |
162 | } | |
163 | ||
164 | return rninfo; | |
20916fba | 165 | } |
166 | ||
d62a17ae | 167 | static void ospf_add_to_if(struct interface *ifp, struct ospf_interface *oi) |
718e3744 | 168 | { |
d62a17ae | 169 | struct route_node *rn; |
170 | struct prefix p; | |
171 | ||
172 | p = *oi->address; | |
173 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
174 | ||
175 | rn = route_node_get(IF_OIFS(ifp), &p); | |
176 | /* rn->info should either be NULL or equal to this oi | |
177 | * as route_node_get may return an existing node | |
178 | */ | |
179 | assert(!rn->info || rn->info == oi); | |
180 | rn->info = oi; | |
718e3744 | 181 | } |
182 | ||
d62a17ae | 183 | static void ospf_delete_from_if(struct interface *ifp, |
184 | struct ospf_interface *oi) | |
718e3744 | 185 | { |
d62a17ae | 186 | struct route_node *rn; |
187 | struct prefix p; | |
188 | ||
189 | p = *oi->address; | |
190 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
191 | ||
192 | rn = route_node_lookup(IF_OIFS(oi->ifp), &p); | |
193 | assert(rn); | |
194 | assert(rn->info); | |
195 | rn->info = NULL; | |
196 | route_unlock_node(rn); | |
197 | route_unlock_node(rn); | |
718e3744 | 198 | } |
199 | ||
d62a17ae | 200 | struct ospf_interface *ospf_if_new(struct ospf *ospf, struct interface *ifp, |
201 | struct prefix *p) | |
718e3744 | 202 | { |
d62a17ae | 203 | struct ospf_interface *oi; |
204 | ||
205 | if ((oi = ospf_if_table_lookup(ifp, p)) == NULL) { | |
206 | oi = XCALLOC(MTYPE_OSPF_IF, sizeof(struct ospf_interface)); | |
207 | memset(oi, 0, sizeof(struct ospf_interface)); | |
208 | } else | |
209 | return oi; | |
210 | ||
211 | /* Set zebra interface pointer. */ | |
212 | oi->ifp = ifp; | |
213 | oi->address = p; | |
214 | ||
215 | ospf_add_to_if(ifp, oi); | |
216 | listnode_add(ospf->oiflist, oi); | |
217 | ||
218 | /* Initialize neighbor list. */ | |
219 | oi->nbrs = route_table_init(); | |
220 | ||
221 | /* Initialize static neighbor list. */ | |
222 | oi->nbr_nbma = list_new(); | |
223 | ||
224 | /* Initialize Link State Acknowledgment list. */ | |
225 | oi->ls_ack = list_new(); | |
226 | oi->ls_ack_direct.ls_ack = list_new(); | |
227 | ||
228 | /* Set default values. */ | |
229 | ospf_if_reset_variables(oi); | |
230 | ||
231 | /* Set pseudo neighbor to Null */ | |
232 | oi->nbr_self = NULL; | |
233 | ||
234 | oi->ls_upd_queue = route_table_init(); | |
235 | oi->t_ls_upd_event = NULL; | |
236 | oi->t_ls_ack_direct = NULL; | |
237 | ||
238 | oi->crypt_seqnum = time(NULL); | |
239 | ||
240 | ospf_opaque_type9_lsa_init(oi); | |
241 | ||
242 | oi->ospf = ospf; | |
243 | QOBJ_REG(oi, ospf_interface); | |
244 | ||
245 | return oi; | |
718e3744 | 246 | } |
247 | ||
248 | /* Restore an interface to its pre UP state | |
249 | Used from ism_interface_down only */ | |
d62a17ae | 250 | void ospf_if_cleanup(struct ospf_interface *oi) |
718e3744 | 251 | { |
d62a17ae | 252 | struct route_node *rn; |
253 | struct listnode *node, *nnode; | |
254 | struct ospf_neighbor *nbr; | |
255 | struct ospf_nbr_nbma *nbr_nbma; | |
256 | struct ospf_lsa *lsa; | |
257 | ||
258 | /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */ | |
259 | /* delete all static neighbors attached to this interface */ | |
260 | for (ALL_LIST_ELEMENTS(oi->nbr_nbma, node, nnode, nbr_nbma)) { | |
261 | OSPF_POLL_TIMER_OFF(nbr_nbma->t_poll); | |
262 | ||
263 | if (nbr_nbma->nbr) { | |
264 | nbr_nbma->nbr->nbr_nbma = NULL; | |
265 | nbr_nbma->nbr = NULL; | |
266 | } | |
267 | ||
268 | nbr_nbma->oi = NULL; | |
269 | ||
270 | listnode_delete(oi->nbr_nbma, nbr_nbma); | |
718e3744 | 271 | } |
272 | ||
d62a17ae | 273 | /* send Neighbor event KillNbr to all associated neighbors. */ |
274 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) | |
275 | if ((nbr = rn->info) != NULL) | |
276 | if (nbr != oi->nbr_self) | |
277 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
278 | ||
279 | /* Cleanup Link State Acknowlegdment list. */ | |
280 | for (ALL_LIST_ELEMENTS(oi->ls_ack, node, nnode, lsa)) | |
281 | ospf_lsa_unlock(&lsa); /* oi->ls_ack */ | |
282 | list_delete_all_node(oi->ls_ack); | |
283 | ||
284 | oi->crypt_seqnum = 0; | |
285 | ||
286 | /* Empty link state update queue */ | |
287 | ospf_ls_upd_queue_empty(oi); | |
288 | ||
289 | /* Reset pseudo neighbor. */ | |
290 | ospf_nbr_self_reset(oi, oi->ospf->router_id); | |
718e3744 | 291 | } |
292 | ||
d62a17ae | 293 | void ospf_if_free(struct ospf_interface *oi) |
718e3744 | 294 | { |
d62a17ae | 295 | ospf_if_down(oi); |
296 | ||
297 | assert(oi->state == ISM_Down); | |
298 | ||
299 | ospf_opaque_type9_lsa_term(oi); | |
300 | ||
301 | QOBJ_UNREG(oi); | |
302 | ||
303 | /* Free Pseudo Neighbour */ | |
304 | ospf_nbr_delete(oi->nbr_self); | |
718e3744 | 305 | |
d62a17ae | 306 | route_table_finish(oi->nbrs); |
307 | route_table_finish(oi->ls_upd_queue); | |
718e3744 | 308 | |
d62a17ae | 309 | /* Free any lists that should be freed */ |
310 | list_free(oi->nbr_nbma); | |
718e3744 | 311 | |
d62a17ae | 312 | list_free(oi->ls_ack); |
313 | list_free(oi->ls_ack_direct.ls_ack); | |
ae19c240 | 314 | |
d62a17ae | 315 | ospf_delete_from_if(oi->ifp, oi); |
718e3744 | 316 | |
d62a17ae | 317 | listnode_delete(oi->ospf->oiflist, oi); |
318 | listnode_delete(oi->area->oiflist, oi); | |
718e3744 | 319 | |
d62a17ae | 320 | thread_cancel_event(master, oi); |
cfd670f3 | 321 | |
d62a17ae | 322 | memset(oi, 0, sizeof(*oi)); |
323 | XFREE(MTYPE_OSPF_IF, oi); | |
718e3744 | 324 | } |
325 | ||
d62a17ae | 326 | int ospf_if_is_up(struct ospf_interface *oi) |
718e3744 | 327 | { |
d62a17ae | 328 | return if_is_up(oi->ifp); |
718e3744 | 329 | } |
330 | ||
d62a17ae | 331 | struct ospf_interface *ospf_if_exists(struct ospf_interface *oic) |
332 | { | |
333 | struct listnode *node; | |
334 | struct ospf *ospf; | |
335 | struct ospf_interface *oi; | |
2db3d05d | 336 | |
d62a17ae | 337 | if ((ospf = ospf_lookup()) == NULL) |
338 | return NULL; | |
2db3d05d | 339 | |
d62a17ae | 340 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) |
341 | if (oi == oic) | |
342 | return oi; | |
1eb8ef25 | 343 | |
d62a17ae | 344 | return NULL; |
2db3d05d | 345 | } |
346 | ||
c81ee5c9 | 347 | /* Lookup OSPF interface by router LSA posistion */ |
d62a17ae | 348 | struct ospf_interface *ospf_if_lookup_by_lsa_pos(struct ospf_area *area, |
349 | int lsa_pos) | |
c81ee5c9 | 350 | { |
d62a17ae | 351 | struct listnode *node; |
352 | struct ospf_interface *oi; | |
c81ee5c9 | 353 | |
d62a17ae | 354 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) { |
355 | if (lsa_pos >= oi->lsa_pos_beg && lsa_pos < oi->lsa_pos_end) | |
356 | return oi; | |
357 | } | |
358 | return NULL; | |
c81ee5c9 JT |
359 | } |
360 | ||
d62a17ae | 361 | struct ospf_interface *ospf_if_lookup_by_local_addr(struct ospf *ospf, |
362 | struct interface *ifp, | |
363 | struct in_addr address) | |
718e3744 | 364 | { |
d62a17ae | 365 | struct listnode *node; |
366 | struct ospf_interface *oi; | |
367 | ||
368 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) | |
369 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
370 | if (ifp && oi->ifp != ifp) | |
371 | continue; | |
372 | ||
373 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
374 | return oi; | |
375 | } | |
376 | ||
377 | return NULL; | |
718e3744 | 378 | } |
379 | ||
d62a17ae | 380 | struct ospf_interface *ospf_if_lookup_by_prefix(struct ospf *ospf, |
381 | struct prefix_ipv4 *p) | |
718e3744 | 382 | { |
d62a17ae | 383 | struct listnode *node; |
384 | struct ospf_interface *oi; | |
385 | ||
386 | /* Check each Interface. */ | |
387 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
388 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
389 | struct prefix ptmp; | |
390 | ||
391 | prefix_copy(&ptmp, CONNECTED_PREFIX(oi->connected)); | |
392 | apply_mask(&ptmp); | |
393 | if (prefix_same(&ptmp, (struct prefix *)p)) | |
394 | return oi; | |
395 | } | |
68980084 | 396 | } |
d62a17ae | 397 | return NULL; |
718e3744 | 398 | } |
399 | ||
05cf46ba | 400 | /* determine receiving interface by ifp and source address */ |
d62a17ae | 401 | struct ospf_interface *ospf_if_lookup_recv_if(struct ospf *ospf, |
402 | struct in_addr src, | |
403 | struct interface *ifp) | |
718e3744 | 404 | { |
d62a17ae | 405 | struct route_node *rn; |
406 | struct prefix_ipv4 addr; | |
407 | struct ospf_interface *oi, *match; | |
408 | ||
409 | addr.family = AF_INET; | |
410 | addr.prefix = src; | |
411 | addr.prefixlen = IPV4_MAX_BITLEN; | |
412 | ||
413 | match = NULL; | |
414 | ||
415 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
416 | oi = rn->info; | |
417 | ||
418 | if (!oi) /* oi can be NULL for PtP aliases */ | |
419 | continue; | |
420 | ||
421 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
422 | continue; | |
423 | ||
424 | if (if_is_loopback(oi->ifp)) | |
425 | continue; | |
426 | ||
427 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
428 | match = oi; | |
429 | else if (prefix_match(CONNECTED_PREFIX(oi->connected), | |
430 | (struct prefix *)&addr)) { | |
431 | if ((match == NULL) || (match->address->prefixlen | |
432 | < oi->address->prefixlen)) | |
433 | match = oi; | |
434 | } | |
718e3744 | 435 | } |
718e3744 | 436 | |
d62a17ae | 437 | return match; |
718e3744 | 438 | } |
6b0655a2 | 439 | |
d62a17ae | 440 | void ospf_if_stream_set(struct ospf_interface *oi) |
718e3744 | 441 | { |
d62a17ae | 442 | /* set output fifo queue. */ |
443 | if (oi->obuf == NULL) | |
444 | oi->obuf = ospf_fifo_new(); | |
718e3744 | 445 | } |
446 | ||
d62a17ae | 447 | void ospf_if_stream_unset(struct ospf_interface *oi) |
718e3744 | 448 | { |
d62a17ae | 449 | struct ospf *ospf = oi->ospf; |
450 | ||
451 | if (oi->obuf) { | |
452 | ospf_fifo_free(oi->obuf); | |
453 | oi->obuf = NULL; | |
454 | ||
455 | if (oi->on_write_q) { | |
456 | listnode_delete(ospf->oi_write_q, oi); | |
457 | if (list_isempty(ospf->oi_write_q)) | |
458 | OSPF_TIMER_OFF(ospf->t_write); | |
459 | oi->on_write_q = 0; | |
460 | } | |
461 | } | |
718e3744 | 462 | } |
68980084 | 463 | |
6b0655a2 | 464 | |
d62a17ae | 465 | static struct ospf_if_params *ospf_new_if_params(void) |
718e3744 | 466 | { |
d62a17ae | 467 | struct ospf_if_params *oip; |
468 | ||
469 | oip = XCALLOC(MTYPE_OSPF_IF_PARAMS, sizeof(struct ospf_if_params)); | |
470 | ||
471 | if (!oip) | |
472 | return NULL; | |
473 | ||
474 | UNSET_IF_PARAM(oip, output_cost_cmd); | |
475 | UNSET_IF_PARAM(oip, transmit_delay); | |
476 | UNSET_IF_PARAM(oip, retransmit_interval); | |
477 | UNSET_IF_PARAM(oip, passive_interface); | |
478 | UNSET_IF_PARAM(oip, v_hello); | |
479 | UNSET_IF_PARAM(oip, fast_hello); | |
480 | UNSET_IF_PARAM(oip, v_wait); | |
481 | UNSET_IF_PARAM(oip, priority); | |
482 | UNSET_IF_PARAM(oip, type); | |
483 | UNSET_IF_PARAM(oip, auth_simple); | |
484 | UNSET_IF_PARAM(oip, auth_crypt); | |
485 | UNSET_IF_PARAM(oip, auth_type); | |
486 | ||
487 | oip->auth_crypt = list_new(); | |
488 | ||
489 | oip->network_lsa_seqnum = htonl(OSPF_INITIAL_SEQUENCE_NUMBER); | |
490 | ||
491 | return oip; | |
718e3744 | 492 | } |
493 | ||
d62a17ae | 494 | void ospf_del_if_params(struct ospf_if_params *oip) |
718e3744 | 495 | { |
d62a17ae | 496 | list_delete(oip->auth_crypt); |
497 | bfd_info_free(&(oip->bfd_info)); | |
498 | XFREE(MTYPE_OSPF_IF_PARAMS, oip); | |
718e3744 | 499 | } |
500 | ||
d62a17ae | 501 | void ospf_free_if_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 502 | { |
d62a17ae | 503 | struct ospf_if_params *oip; |
504 | struct prefix_ipv4 p; | |
505 | struct route_node *rn; | |
506 | ||
507 | p.family = AF_INET; | |
508 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
509 | p.prefix = addr; | |
510 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
511 | if (!rn || !rn->info) | |
512 | return; | |
513 | ||
514 | oip = rn->info; | |
515 | route_unlock_node(rn); | |
516 | ||
517 | if (!OSPF_IF_PARAM_CONFIGURED(oip, output_cost_cmd) | |
518 | && !OSPF_IF_PARAM_CONFIGURED(oip, transmit_delay) | |
519 | && !OSPF_IF_PARAM_CONFIGURED(oip, retransmit_interval) | |
520 | && !OSPF_IF_PARAM_CONFIGURED(oip, passive_interface) | |
521 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_hello) | |
522 | && !OSPF_IF_PARAM_CONFIGURED(oip, fast_hello) | |
523 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_wait) | |
524 | && !OSPF_IF_PARAM_CONFIGURED(oip, priority) | |
525 | && !OSPF_IF_PARAM_CONFIGURED(oip, type) | |
526 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_simple) | |
527 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_type) | |
528 | && listcount(oip->auth_crypt) == 0 | |
529 | && ntohl(oip->network_lsa_seqnum) != OSPF_INITIAL_SEQUENCE_NUMBER) { | |
530 | ospf_del_if_params(oip); | |
531 | rn->info = NULL; | |
532 | route_unlock_node(rn); | |
533 | } | |
718e3744 | 534 | } |
535 | ||
d62a17ae | 536 | struct ospf_if_params *ospf_lookup_if_params(struct interface *ifp, |
537 | struct in_addr addr) | |
718e3744 | 538 | { |
d62a17ae | 539 | struct prefix_ipv4 p; |
540 | struct route_node *rn; | |
541 | ||
542 | p.family = AF_INET; | |
543 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
544 | p.prefix = addr; | |
545 | ||
546 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
547 | ||
548 | if (rn) { | |
549 | route_unlock_node(rn); | |
550 | return rn->info; | |
551 | } | |
552 | ||
553 | return NULL; | |
718e3744 | 554 | } |
555 | ||
d62a17ae | 556 | struct ospf_if_params *ospf_get_if_params(struct interface *ifp, |
557 | struct in_addr addr) | |
718e3744 | 558 | { |
d62a17ae | 559 | struct prefix_ipv4 p; |
560 | struct route_node *rn; | |
561 | ||
562 | p.family = AF_INET; | |
563 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
564 | p.prefix = addr; | |
565 | ||
566 | rn = route_node_get(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
567 | ||
568 | if (rn->info == NULL) | |
569 | rn->info = ospf_new_if_params(); | |
570 | else | |
571 | route_unlock_node(rn); | |
572 | ||
573 | return rn->info; | |
718e3744 | 574 | } |
575 | ||
d62a17ae | 576 | void ospf_if_update_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 577 | { |
d62a17ae | 578 | struct route_node *rn; |
579 | struct ospf_interface *oi; | |
580 | ||
581 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
582 | if ((oi = rn->info) == NULL) | |
583 | continue; | |
584 | ||
585 | if (IPV4_ADDR_SAME(&oi->address->u.prefix4, &addr)) | |
586 | oi->params = ospf_lookup_if_params( | |
587 | ifp, oi->address->u.prefix4); | |
588 | } | |
718e3744 | 589 | } |
590 | ||
d62a17ae | 591 | int ospf_if_new_hook(struct interface *ifp) |
718e3744 | 592 | { |
d62a17ae | 593 | int rc = 0; |
594 | ||
595 | ifp->info = XCALLOC(MTYPE_OSPF_IF_INFO, sizeof(struct ospf_if_info)); | |
596 | ||
597 | IF_OIFS(ifp) = route_table_init(); | |
598 | IF_OIFS_PARAMS(ifp) = route_table_init(); | |
599 | ||
600 | IF_DEF_PARAMS(ifp) = ospf_new_if_params(); | |
601 | ||
602 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), transmit_delay); | |
603 | IF_DEF_PARAMS(ifp)->transmit_delay = OSPF_TRANSMIT_DELAY_DEFAULT; | |
604 | ||
605 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), retransmit_interval); | |
606 | IF_DEF_PARAMS(ifp)->retransmit_interval = | |
607 | OSPF_RETRANSMIT_INTERVAL_DEFAULT; | |
608 | ||
609 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), priority); | |
610 | IF_DEF_PARAMS(ifp)->priority = OSPF_ROUTER_PRIORITY_DEFAULT; | |
611 | ||
612 | IF_DEF_PARAMS(ifp)->mtu_ignore = OSPF_MTU_IGNORE_DEFAULT; | |
613 | ||
614 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_hello); | |
615 | IF_DEF_PARAMS(ifp)->v_hello = OSPF_HELLO_INTERVAL_DEFAULT; | |
616 | ||
617 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), fast_hello); | |
618 | IF_DEF_PARAMS(ifp)->fast_hello = OSPF_FAST_HELLO_DEFAULT; | |
619 | ||
620 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_wait); | |
621 | IF_DEF_PARAMS(ifp)->v_wait = OSPF_ROUTER_DEAD_INTERVAL_DEFAULT; | |
622 | ||
623 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_simple); | |
624 | memset(IF_DEF_PARAMS(ifp)->auth_simple, 0, OSPF_AUTH_SIMPLE_SIZE); | |
625 | ||
626 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_type); | |
627 | IF_DEF_PARAMS(ifp)->auth_type = OSPF_AUTH_NOTSET; | |
628 | ||
629 | rc = ospf_opaque_new_if(ifp); | |
630 | return rc; | |
718e3744 | 631 | } |
632 | ||
d62a17ae | 633 | static int ospf_if_delete_hook(struct interface *ifp) |
718e3744 | 634 | { |
d62a17ae | 635 | int rc = 0; |
636 | struct route_node *rn; | |
637 | rc = ospf_opaque_del_if(ifp); | |
940b01aa | 638 | |
d62a17ae | 639 | route_table_finish(IF_OIFS(ifp)); |
940b01aa | 640 | |
d62a17ae | 641 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) |
642 | if (rn->info) | |
643 | ospf_del_if_params(rn->info); | |
644 | route_table_finish(IF_OIFS_PARAMS(ifp)); | |
940b01aa | 645 | |
d62a17ae | 646 | ospf_del_if_params((struct ospf_if_params *)IF_DEF_PARAMS(ifp)); |
647 | XFREE(MTYPE_OSPF_IF_INFO, ifp->info); | |
648 | ifp->info = NULL; | |
718e3744 | 649 | |
d62a17ae | 650 | return rc; |
718e3744 | 651 | } |
652 | ||
d62a17ae | 653 | int ospf_if_is_enable(struct ospf_interface *oi) |
718e3744 | 654 | { |
d62a17ae | 655 | if (!if_is_loopback(oi->ifp)) |
656 | if (if_is_up(oi->ifp)) | |
657 | return 1; | |
718e3744 | 658 | |
d62a17ae | 659 | return 0; |
718e3744 | 660 | } |
661 | ||
d62a17ae | 662 | void ospf_if_set_multicast(struct ospf_interface *oi) |
ba6454ec | 663 | { |
d62a17ae | 664 | if ((oi->state > ISM_Loopback) && (oi->type != OSPF_IFTYPE_LOOPBACK) |
665 | && (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
666 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
667 | /* The interface should belong to the OSPF-all-routers group. */ | |
668 | if (!OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS) | |
669 | && (ospf_if_add_allspfrouters(oi->ospf, oi->address, | |
670 | oi->ifp->ifindex) | |
671 | >= 0)) | |
672 | /* Set the flag only if the system call to join | |
673 | * succeeded. */ | |
674 | OI_MEMBER_JOINED(oi, MEMBER_ALLROUTERS); | |
675 | } else { | |
676 | /* The interface should NOT belong to the OSPF-all-routers | |
677 | * group. */ | |
678 | if (OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS)) { | |
679 | /* Only actually drop if this is the last reference */ | |
680 | if (OI_MEMBER_COUNT(oi, MEMBER_ALLROUTERS) == 1) | |
681 | ospf_if_drop_allspfrouters(oi->ospf, | |
682 | oi->address, | |
683 | oi->ifp->ifindex); | |
684 | /* Unset the flag regardless of whether the system call | |
685 | to leave | |
686 | the group succeeded, since it's much safer to assume | |
687 | that | |
688 | we are not a member. */ | |
689 | OI_MEMBER_LEFT(oi, MEMBER_ALLROUTERS); | |
690 | } | |
691 | } | |
692 | ||
693 | if (((oi->type == OSPF_IFTYPE_BROADCAST) | |
694 | || (oi->type == OSPF_IFTYPE_POINTOPOINT)) | |
695 | && ((oi->state == ISM_DR) || (oi->state == ISM_Backup)) | |
696 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
697 | /* The interface should belong to the OSPF-designated-routers | |
698 | * group. */ | |
699 | if (!OI_MEMBER_CHECK(oi, MEMBER_DROUTERS) | |
700 | && (ospf_if_add_alldrouters(oi->ospf, oi->address, | |
701 | oi->ifp->ifindex) | |
702 | >= 0)) | |
703 | /* Set the flag only if the system call to join | |
704 | * succeeded. */ | |
705 | OI_MEMBER_JOINED(oi, MEMBER_DROUTERS); | |
706 | } else { | |
707 | /* The interface should NOT belong to the | |
708 | * OSPF-designated-routers group */ | |
709 | if (OI_MEMBER_CHECK(oi, MEMBER_DROUTERS)) { | |
710 | /* drop only if last reference */ | |
711 | if (OI_MEMBER_COUNT(oi, MEMBER_DROUTERS) == 1) | |
712 | ospf_if_drop_alldrouters(oi->ospf, oi->address, | |
713 | oi->ifp->ifindex); | |
714 | ||
715 | /* Unset the flag regardless of whether the system call | |
716 | to leave | |
717 | the group succeeded, since it's much safer to assume | |
718 | that | |
719 | we are not a member. */ | |
720 | OI_MEMBER_LEFT(oi, MEMBER_DROUTERS); | |
721 | } | |
722 | } | |
ba6454ec | 723 | } |
724 | ||
d62a17ae | 725 | int ospf_if_up(struct ospf_interface *oi) |
718e3744 | 726 | { |
d62a17ae | 727 | if (oi == NULL) |
728 | return 0; | |
729 | ||
730 | if (oi->type == OSPF_IFTYPE_LOOPBACK) | |
731 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_LoopInd); | |
732 | else { | |
733 | ospf_if_stream_set(oi); | |
734 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_InterfaceUp); | |
735 | } | |
736 | ||
737 | return 1; | |
718e3744 | 738 | } |
739 | ||
d62a17ae | 740 | int ospf_if_down(struct ospf_interface *oi) |
718e3744 | 741 | { |
d62a17ae | 742 | if (oi == NULL) |
743 | return 0; | |
718e3744 | 744 | |
d62a17ae | 745 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); |
746 | /* delete position in router LSA */ | |
747 | oi->lsa_pos_beg = 0; | |
748 | oi->lsa_pos_end = 0; | |
749 | /* Shutdown packet reception and sending */ | |
750 | ospf_if_stream_unset(oi); | |
718e3744 | 751 | |
d62a17ae | 752 | return 1; |
718e3744 | 753 | } |
754 | ||
6b0655a2 | 755 | |
718e3744 | 756 | /* Virtual Link related functions. */ |
757 | ||
d62a17ae | 758 | struct ospf_vl_data *ospf_vl_data_new(struct ospf_area *area, |
759 | struct in_addr vl_peer) | |
718e3744 | 760 | { |
d62a17ae | 761 | struct ospf_vl_data *vl_data; |
718e3744 | 762 | |
d62a17ae | 763 | vl_data = XCALLOC(MTYPE_OSPF_VL_DATA, sizeof(struct ospf_vl_data)); |
718e3744 | 764 | |
d62a17ae | 765 | vl_data->vl_peer.s_addr = vl_peer.s_addr; |
766 | vl_data->vl_area_id = area->area_id; | |
767 | vl_data->vl_area_id_fmt = area->area_id_fmt; | |
718e3744 | 768 | |
d62a17ae | 769 | return vl_data; |
718e3744 | 770 | } |
771 | ||
d62a17ae | 772 | void ospf_vl_data_free(struct ospf_vl_data *vl_data) |
718e3744 | 773 | { |
d62a17ae | 774 | XFREE(MTYPE_OSPF_VL_DATA, vl_data); |
718e3744 | 775 | } |
776 | ||
777 | u_int vlink_count = 0; | |
778 | ||
d62a17ae | 779 | struct ospf_interface *ospf_vl_new(struct ospf *ospf, |
780 | struct ospf_vl_data *vl_data) | |
718e3744 | 781 | { |
d62a17ae | 782 | struct ospf_interface *voi; |
783 | struct interface *vi; | |
784 | char ifname[INTERFACE_NAMSIZ + 1]; | |
785 | struct ospf_area *area; | |
786 | struct in_addr area_id; | |
787 | struct connected *co; | |
788 | struct prefix_ipv4 *p; | |
789 | ||
790 | if (IS_DEBUG_OSPF_EVENT) | |
791 | zlog_debug("ospf_vl_new(): Start"); | |
792 | if (vlink_count == OSPF_VL_MAX_COUNT) { | |
793 | if (IS_DEBUG_OSPF_EVENT) | |
794 | zlog_debug( | |
795 | "ospf_vl_new(): Alarm: " | |
796 | "cannot create more than OSPF_MAX_VL_COUNT virtual links"); | |
797 | return NULL; | |
798 | } | |
799 | ||
800 | if (IS_DEBUG_OSPF_EVENT) | |
801 | zlog_debug("ospf_vl_new(): creating pseudo zebra interface"); | |
802 | ||
803 | snprintf(ifname, sizeof(ifname), "VLINK%d", vlink_count); | |
804 | vi = if_create(ifname, strnlen(ifname, sizeof(ifname)), VRF_DEFAULT); | |
805 | /* | |
806 | * if_create sets ZEBRA_INTERFACE_LINKDETECTION | |
807 | * virtual links don't need this. | |
808 | */ | |
809 | UNSET_FLAG(vi->status, ZEBRA_INTERFACE_LINKDETECTION); | |
810 | co = connected_new(); | |
811 | co->ifp = vi; | |
812 | listnode_add(vi->connected, co); | |
813 | ||
814 | p = prefix_ipv4_new(); | |
815 | p->family = AF_INET; | |
816 | p->prefix.s_addr = 0; | |
817 | p->prefixlen = 0; | |
818 | ||
819 | co->address = (struct prefix *)p; | |
820 | ||
821 | voi = ospf_if_new(ospf, vi, co->address); | |
822 | if (voi == NULL) { | |
823 | if (IS_DEBUG_OSPF_EVENT) | |
824 | zlog_debug( | |
825 | "ospf_vl_new(): Alarm: OSPF int structure is not created"); | |
826 | return NULL; | |
827 | } | |
828 | voi->connected = co; | |
829 | voi->vl_data = vl_data; | |
830 | voi->ifp->mtu = OSPF_VL_MTU; | |
831 | voi->type = OSPF_IFTYPE_VIRTUALLINK; | |
832 | ||
833 | vlink_count++; | |
834 | if (IS_DEBUG_OSPF_EVENT) | |
835 | zlog_debug("ospf_vl_new(): Created name: %s", ifname); | |
836 | if (IS_DEBUG_OSPF_EVENT) | |
837 | zlog_debug("ospf_vl_new(): set if->name to %s", vi->name); | |
838 | ||
839 | area_id.s_addr = 0; | |
840 | area = ospf_area_get(ospf, area_id); | |
841 | voi->area = area; | |
842 | ||
843 | if (IS_DEBUG_OSPF_EVENT) | |
844 | zlog_debug( | |
845 | "ospf_vl_new(): set associated area to the backbone"); | |
846 | ||
847 | /* Add pseudo neighbor. */ | |
848 | ospf_nbr_self_reset(voi, voi->ospf->router_id); | |
849 | ||
850 | ospf_area_add_if(voi->area, voi); | |
851 | ||
852 | ospf_if_stream_set(voi); | |
853 | ||
854 | if (IS_DEBUG_OSPF_EVENT) | |
855 | zlog_debug("ospf_vl_new(): Stop"); | |
856 | return voi; | |
718e3744 | 857 | } |
858 | ||
d62a17ae | 859 | static void ospf_vl_if_delete(struct ospf_vl_data *vl_data) |
718e3744 | 860 | { |
d62a17ae | 861 | struct interface *ifp = vl_data->vl_oi->ifp; |
862 | vl_data->vl_oi->address->u.prefix4.s_addr = 0; | |
863 | vl_data->vl_oi->address->prefixlen = 0; | |
864 | ospf_if_free(vl_data->vl_oi); | |
865 | if_delete(ifp); | |
866 | vlink_count--; | |
718e3744 | 867 | } |
868 | ||
9c27ef9b PJ |
869 | /* Look up vl_data for given peer, optionally qualified to be in the |
870 | * specified area. NULL area returns first found.. | |
871 | */ | |
d62a17ae | 872 | struct ospf_vl_data *ospf_vl_lookup(struct ospf *ospf, struct ospf_area *area, |
873 | struct in_addr vl_peer) | |
718e3744 | 874 | { |
d62a17ae | 875 | struct ospf_vl_data *vl_data; |
876 | struct listnode *node; | |
877 | ||
878 | if (IS_DEBUG_OSPF_EVENT) { | |
879 | zlog_debug("%s: Looking for %s", __func__, inet_ntoa(vl_peer)); | |
880 | if (area) | |
881 | zlog_debug("%s: in area %s", __func__, | |
882 | inet_ntoa(area->area_id)); | |
883 | } | |
884 | ||
885 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
886 | if (IS_DEBUG_OSPF_EVENT) | |
887 | zlog_debug("%s: VL %s, peer %s", __func__, | |
888 | vl_data->vl_oi->ifp->name, | |
889 | inet_ntoa(vl_data->vl_peer)); | |
890 | ||
891 | if (area | |
892 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
893 | continue; | |
894 | ||
895 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &vl_peer)) | |
896 | return vl_data; | |
897 | } | |
898 | ||
899 | return NULL; | |
718e3744 | 900 | } |
901 | ||
d62a17ae | 902 | static void ospf_vl_shutdown(struct ospf_vl_data *vl_data) |
718e3744 | 903 | { |
d62a17ae | 904 | struct ospf_interface *oi; |
718e3744 | 905 | |
d62a17ae | 906 | if ((oi = vl_data->vl_oi) == NULL) |
907 | return; | |
718e3744 | 908 | |
d62a17ae | 909 | oi->address->u.prefix4.s_addr = 0; |
910 | oi->address->prefixlen = 0; | |
718e3744 | 911 | |
d62a17ae | 912 | UNSET_FLAG(oi->ifp->flags, IFF_UP); |
913 | /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */ | |
914 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); | |
718e3744 | 915 | } |
916 | ||
d62a17ae | 917 | void ospf_vl_add(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 918 | { |
d62a17ae | 919 | listnode_add(ospf->vlinks, vl_data); |
920 | hook_call(ospf_vl_add, vl_data); | |
718e3744 | 921 | } |
922 | ||
d62a17ae | 923 | void ospf_vl_delete(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 924 | { |
d62a17ae | 925 | ospf_vl_shutdown(vl_data); |
926 | ospf_vl_if_delete(vl_data); | |
718e3744 | 927 | |
d62a17ae | 928 | hook_call(ospf_vl_delete, vl_data); |
929 | listnode_delete(ospf->vlinks, vl_data); | |
718e3744 | 930 | |
d62a17ae | 931 | ospf_vl_data_free(vl_data); |
718e3744 | 932 | } |
933 | ||
d62a17ae | 934 | static int ospf_vl_set_params(struct ospf_vl_data *vl_data, struct vertex *v) |
718e3744 | 935 | { |
d62a17ae | 936 | int changed = 0; |
937 | struct ospf_interface *voi; | |
938 | struct listnode *node; | |
939 | struct vertex_parent *vp = NULL; | |
940 | unsigned int i; | |
941 | struct router_lsa *rl; | |
942 | ||
943 | voi = vl_data->vl_oi; | |
944 | ||
945 | if (voi->output_cost != v->distance) { | |
946 | ||
947 | voi->output_cost = v->distance; | |
948 | changed = 1; | |
949 | } | |
950 | ||
951 | for (ALL_LIST_ELEMENTS_RO(v->parents, node, vp)) { | |
952 | vl_data->nexthop.oi = vp->nexthop->oi; | |
953 | vl_data->nexthop.router = vp->nexthop->router; | |
954 | ||
955 | if (!IPV4_ADDR_SAME(&voi->address->u.prefix4, | |
956 | &vl_data->nexthop.oi->address->u.prefix4)) | |
957 | changed = 1; | |
958 | ||
959 | voi->address->u.prefix4 = | |
960 | vl_data->nexthop.oi->address->u.prefix4; | |
961 | voi->address->prefixlen = | |
962 | vl_data->nexthop.oi->address->prefixlen; | |
963 | ||
964 | break; /* We take the first interface. */ | |
965 | } | |
966 | ||
967 | rl = (struct router_lsa *)v->lsa; | |
968 | ||
969 | /* use SPF determined backlink index in struct vertex | |
970 | * for virtual link destination address | |
971 | */ | |
972 | if (vp && vp->backlink >= 0) { | |
973 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
974 | &rl->link[vp->backlink].link_data)) | |
975 | changed = 1; | |
976 | vl_data->peer_addr = rl->link[vp->backlink].link_data; | |
977 | } else { | |
978 | /* This is highly odd, there is no backlink index | |
979 | * there should be due to the ospf_spf_has_link() check | |
980 | * in SPF. Lets warn and try pick a link anyway. | |
981 | */ | |
982 | zlog_warn("ospf_vl_set_params: No backlink for %s!", | |
983 | vl_data->vl_oi->ifp->name); | |
984 | for (i = 0; i < ntohs(rl->links); i++) { | |
985 | switch (rl->link[i].type) { | |
986 | case LSA_LINK_TYPE_VIRTUALLINK: | |
987 | if (IS_DEBUG_OSPF_EVENT) | |
988 | zlog_debug( | |
989 | "found back link through VL"); | |
990 | /* fallthru */ | |
991 | case LSA_LINK_TYPE_TRANSIT: | |
992 | case LSA_LINK_TYPE_POINTOPOINT: | |
993 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
994 | &rl->link[i].link_data)) | |
995 | changed = 1; | |
996 | vl_data->peer_addr = rl->link[i].link_data; | |
997 | } | |
998 | } | |
999 | } | |
1000 | ||
1001 | if (IS_DEBUG_OSPF_EVENT) | |
1002 | zlog_debug("%s: %s peer address: %s, cost: %d,%schanged", | |
1003 | __func__, vl_data->vl_oi->ifp->name, | |
1004 | inet_ntoa(vl_data->peer_addr), voi->output_cost, | |
1005 | (changed ? " " : " un")); | |
1006 | ||
1007 | return changed; | |
718e3744 | 1008 | } |
1009 | ||
1010 | ||
d62a17ae | 1011 | void ospf_vl_up_check(struct ospf_area *area, struct in_addr rid, |
1012 | struct vertex *v) | |
718e3744 | 1013 | { |
d62a17ae | 1014 | struct ospf *ospf = area->ospf; |
1015 | struct listnode *node; | |
1016 | struct ospf_vl_data *vl_data; | |
1017 | struct ospf_interface *oi; | |
1018 | ||
1019 | if (IS_DEBUG_OSPF_EVENT) { | |
1020 | zlog_debug("ospf_vl_up_check(): Start"); | |
1021 | zlog_debug("ospf_vl_up_check(): Router ID is %s", | |
1022 | inet_ntoa(rid)); | |
1023 | zlog_debug("ospf_vl_up_check(): Area is %s", | |
1024 | inet_ntoa(area->area_id)); | |
718e3744 | 1025 | } |
1026 | ||
d62a17ae | 1027 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { |
1028 | if (IS_DEBUG_OSPF_EVENT) { | |
1029 | zlog_debug("%s: considering VL, %s in area %s", | |
1030 | __func__, vl_data->vl_oi->ifp->name, | |
1031 | inet_ntoa(vl_data->vl_area_id)); | |
1032 | zlog_debug("%s: peer ID: %s", __func__, | |
1033 | inet_ntoa(vl_data->vl_peer)); | |
1034 | } | |
1035 | ||
1036 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &rid) | |
1037 | && IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) { | |
1038 | oi = vl_data->vl_oi; | |
1039 | SET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1040 | ||
1041 | if (IS_DEBUG_OSPF_EVENT) | |
1042 | zlog_debug( | |
1043 | "ospf_vl_up_check(): this VL matched"); | |
1044 | ||
1045 | if (oi->state == ISM_Down) { | |
1046 | if (IS_DEBUG_OSPF_EVENT) | |
1047 | zlog_debug( | |
1048 | "ospf_vl_up_check(): VL is down, waking it up"); | |
1049 | SET_FLAG(oi->ifp->flags, IFF_UP); | |
1050 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceUp); | |
1051 | } | |
1052 | ||
1053 | if (ospf_vl_set_params(vl_data, v)) { | |
1054 | if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1055 | zlog_debug( | |
1056 | "ospf_vl_up_check: VL cost change," | |
1057 | " scheduling router lsa refresh"); | |
1058 | if (ospf->backbone) | |
1059 | ospf_router_lsa_update_area( | |
1060 | ospf->backbone); | |
1061 | else if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1062 | zlog_debug( | |
1063 | "ospf_vl_up_check: VL cost change, no backbone!"); | |
1064 | } | |
1065 | } | |
1066 | } | |
718e3744 | 1067 | } |
1068 | ||
d62a17ae | 1069 | void ospf_vl_unapprove(struct ospf *ospf) |
718e3744 | 1070 | { |
d62a17ae | 1071 | struct listnode *node; |
1072 | struct ospf_vl_data *vl_data; | |
718e3744 | 1073 | |
d62a17ae | 1074 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) |
1075 | UNSET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
718e3744 | 1076 | } |
1077 | ||
d62a17ae | 1078 | void ospf_vl_shut_unapproved(struct ospf *ospf) |
718e3744 | 1079 | { |
d62a17ae | 1080 | struct listnode *node, *nnode; |
1081 | struct ospf_vl_data *vl_data; | |
718e3744 | 1082 | |
d62a17ae | 1083 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) |
1084 | if (!CHECK_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED)) | |
1085 | ospf_vl_shutdown(vl_data); | |
718e3744 | 1086 | } |
1087 | ||
d62a17ae | 1088 | int ospf_full_virtual_nbrs(struct ospf_area *area) |
718e3744 | 1089 | { |
d62a17ae | 1090 | if (IS_DEBUG_OSPF_EVENT) { |
1091 | zlog_debug( | |
1092 | "counting fully adjacent virtual neighbors in area %s", | |
1093 | inet_ntoa(area->area_id)); | |
1094 | zlog_debug("there are %d of them", area->full_vls); | |
1095 | } | |
1096 | ||
1097 | return area->full_vls; | |
718e3744 | 1098 | } |
1099 | ||
d62a17ae | 1100 | int ospf_vls_in_area(struct ospf_area *area) |
718e3744 | 1101 | { |
d62a17ae | 1102 | struct listnode *node; |
1103 | struct ospf_vl_data *vl_data; | |
1104 | int c = 0; | |
718e3744 | 1105 | |
d62a17ae | 1106 | for (ALL_LIST_ELEMENTS_RO(area->ospf->vlinks, node, vl_data)) |
1107 | if (IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1108 | c++; | |
718e3744 | 1109 | |
d62a17ae | 1110 | return c; |
718e3744 | 1111 | } |
1112 | ||
6b0655a2 | 1113 | |
d62a17ae | 1114 | struct crypt_key *ospf_crypt_key_new() |
718e3744 | 1115 | { |
d62a17ae | 1116 | return XCALLOC(MTYPE_OSPF_CRYPT_KEY, sizeof(struct crypt_key)); |
718e3744 | 1117 | } |
1118 | ||
d62a17ae | 1119 | void ospf_crypt_key_add(struct list *crypt, struct crypt_key *ck) |
718e3744 | 1120 | { |
d62a17ae | 1121 | listnode_add(crypt, ck); |
718e3744 | 1122 | } |
1123 | ||
d62a17ae | 1124 | struct crypt_key *ospf_crypt_key_lookup(struct list *auth_crypt, u_char key_id) |
718e3744 | 1125 | { |
d62a17ae | 1126 | struct listnode *node; |
1127 | struct crypt_key *ck; | |
718e3744 | 1128 | |
d62a17ae | 1129 | for (ALL_LIST_ELEMENTS_RO(auth_crypt, node, ck)) |
1130 | if (ck->key_id == key_id) | |
1131 | return ck; | |
718e3744 | 1132 | |
d62a17ae | 1133 | return NULL; |
718e3744 | 1134 | } |
1135 | ||
d62a17ae | 1136 | int ospf_crypt_key_delete(struct list *auth_crypt, u_char key_id) |
718e3744 | 1137 | { |
d62a17ae | 1138 | struct listnode *node, *nnode; |
1139 | struct crypt_key *ck; | |
1140 | ||
1141 | for (ALL_LIST_ELEMENTS(auth_crypt, node, nnode, ck)) { | |
1142 | if (ck->key_id == key_id) { | |
1143 | listnode_delete(auth_crypt, ck); | |
1144 | XFREE(MTYPE_OSPF_CRYPT_KEY, ck); | |
1145 | return 1; | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | return 0; | |
718e3744 | 1150 | } |
1151 | ||
d62a17ae | 1152 | u_char ospf_default_iftype(struct interface *ifp) |
bc18d616 | 1153 | { |
d62a17ae | 1154 | if (if_is_pointopoint(ifp)) |
1155 | return OSPF_IFTYPE_POINTOPOINT; | |
1156 | else if (if_is_loopback(ifp)) | |
1157 | return OSPF_IFTYPE_LOOPBACK; | |
1158 | else | |
1159 | return OSPF_IFTYPE_BROADCAST; | |
bc18d616 | 1160 | } |
1161 | ||
d62a17ae | 1162 | void ospf_if_init() |
718e3744 | 1163 | { |
d62a17ae | 1164 | /* Initialize Zebra interface data structure. */ |
1165 | om->iflist = vrf_iflist(VRF_DEFAULT); | |
1166 | if_add_hook(IF_NEW_HOOK, ospf_if_new_hook); | |
1167 | if_add_hook(IF_DELETE_HOOK, ospf_if_delete_hook); | |
718e3744 | 1168 | } |