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1 | /* | |
2 | * OSPF Interface functions. | |
3 | * Copyright (C) 1999, 2000 Toshiaki Takada | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
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 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the | |
19 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | * Boston, MA 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "thread.h" | |
26 | #include "linklist.h" | |
27 | #include "prefix.h" | |
28 | #include "if.h" | |
29 | #include "table.h" | |
30 | #include "memory.h" | |
31 | #include "command.h" | |
32 | #include "stream.h" | |
33 | #include "log.h" | |
34 | #include "zclient.h" | |
35 | #include "bfd.h" | |
36 | ||
37 | #include "ospfd/ospfd.h" | |
38 | #include "ospfd/ospf_spf.h" | |
39 | #include "ospfd/ospf_interface.h" | |
40 | #include "ospfd/ospf_ism.h" | |
41 | #include "ospfd/ospf_asbr.h" | |
42 | #include "ospfd/ospf_lsa.h" | |
43 | #include "ospfd/ospf_lsdb.h" | |
44 | #include "ospfd/ospf_neighbor.h" | |
45 | #include "ospfd/ospf_nsm.h" | |
46 | #include "ospfd/ospf_packet.h" | |
47 | #include "ospfd/ospf_abr.h" | |
48 | #include "ospfd/ospf_network.h" | |
49 | #include "ospfd/ospf_dump.h" | |
50 | #ifdef HAVE_SNMP | |
51 | #include "ospfd/ospf_snmp.h" | |
52 | #endif /* HAVE_SNMP */ | |
53 | ||
54 | ||
55 | int | |
56 | ospf_if_get_output_cost (struct ospf_interface *oi) | |
57 | { | |
58 | /* If all else fails, use default OSPF cost */ | |
59 | u_int32_t cost; | |
60 | u_int32_t bw, refbw; | |
61 | ||
62 | bw = oi->ifp->bandwidth ? oi->ifp->bandwidth : OSPF_DEFAULT_BANDWIDTH; | |
63 | refbw = oi->ospf->ref_bandwidth; | |
64 | ||
65 | /* A specifed ip ospf cost overrides a calculated one. */ | |
66 | if (OSPF_IF_PARAM_CONFIGURED (IF_DEF_PARAMS (oi->ifp), output_cost_cmd) || | |
67 | OSPF_IF_PARAM_CONFIGURED (oi->params, output_cost_cmd)) | |
68 | cost = OSPF_IF_PARAM (oi, output_cost_cmd); | |
69 | /* See if a cost can be calculated from the zebra processes | |
70 | interface bandwidth field. */ | |
71 | else | |
72 | { | |
73 | cost = (u_int32_t) ((double)refbw / (double)bw + (double)0.5); | |
74 | if (cost < 1) | |
75 | cost = 1; | |
76 | else if (cost > 65535) | |
77 | cost = 65535; | |
78 | } | |
79 | ||
80 | return cost; | |
81 | } | |
82 | ||
83 | void | |
84 | ospf_if_recalculate_output_cost (struct interface *ifp) | |
85 | { | |
86 | u_int32_t newcost; | |
87 | struct route_node *rn; | |
88 | ||
89 | for (rn = route_top (IF_OIFS (ifp)); rn; rn = route_next (rn)) | |
90 | { | |
91 | struct ospf_interface *oi; | |
92 | ||
93 | if ( (oi = rn->info) == NULL) | |
94 | continue; | |
95 | ||
96 | newcost = ospf_if_get_output_cost (oi); | |
97 | ||
98 | /* Is actual output cost changed? */ | |
99 | if (oi->output_cost != newcost) | |
100 | { | |
101 | oi->output_cost = newcost; | |
102 | ospf_router_lsa_update_area (oi->area); | |
103 | } | |
104 | } | |
105 | } | |
106 | ||
107 | /* Simulate down/up on the interface. This is needed, for example, when | |
108 | the MTU changes. */ | |
109 | void | |
110 | ospf_if_reset(struct interface *ifp) | |
111 | { | |
112 | struct route_node *rn; | |
113 | ||
114 | for (rn = route_top (IF_OIFS (ifp)); rn; rn = route_next (rn)) | |
115 | { | |
116 | struct ospf_interface *oi; | |
117 | ||
118 | if ( (oi = rn->info) == NULL) | |
119 | continue; | |
120 | ||
121 | ospf_if_down(oi); | |
122 | ospf_if_up(oi); | |
123 | } | |
124 | } | |
125 | ||
126 | void | |
127 | ospf_if_reset_variables (struct ospf_interface *oi) | |
128 | { | |
129 | /* Set default values. */ | |
130 | /* don't clear this flag. oi->flag = OSPF_IF_DISABLE; */ | |
131 | ||
132 | if (oi->vl_data) | |
133 | oi->type = OSPF_IFTYPE_VIRTUALLINK; | |
134 | else | |
135 | /* preserve network-type */ | |
136 | if (oi->type != OSPF_IFTYPE_NBMA) | |
137 | oi->type = OSPF_IFTYPE_BROADCAST; | |
138 | ||
139 | oi->state = ISM_Down; | |
140 | ||
141 | oi->crypt_seqnum = 0; | |
142 | ||
143 | /* This must be short, (less than RxmtInterval) | |
144 | - RFC 2328 Section 13.5 para 3. Set to 1 second to avoid Acks being | |
145 | held back for too long - MAG */ | |
146 | oi->v_ls_ack = 1; | |
147 | } | |
148 | ||
149 | /* lookup oi for specified prefix/ifp */ | |
150 | struct ospf_interface * | |
151 | ospf_if_table_lookup (struct interface *ifp, struct prefix *prefix) | |
152 | { | |
153 | struct prefix p; | |
154 | struct route_node *rn; | |
155 | struct ospf_interface *rninfo = NULL; | |
156 | ||
157 | p = *prefix; | |
158 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
159 | ||
160 | /* route_node_get implicitely locks */ | |
161 | if ((rn = route_node_lookup (IF_OIFS (ifp), &p))) | |
162 | { | |
163 | rninfo = (struct ospf_interface *) rn->info; | |
164 | route_unlock_node (rn); | |
165 | } | |
166 | ||
167 | return rninfo; | |
168 | } | |
169 | ||
170 | static void | |
171 | ospf_add_to_if (struct interface *ifp, struct ospf_interface *oi) | |
172 | { | |
173 | struct route_node *rn; | |
174 | struct prefix p; | |
175 | ||
176 | p = *oi->address; | |
177 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
178 | ||
179 | rn = route_node_get (IF_OIFS (ifp), &p); | |
180 | /* rn->info should either be NULL or equal to this oi | |
181 | * as route_node_get may return an existing node | |
182 | */ | |
183 | assert (!rn->info || rn->info == oi); | |
184 | rn->info = oi; | |
185 | } | |
186 | ||
187 | static void | |
188 | ospf_delete_from_if (struct interface *ifp, struct ospf_interface *oi) | |
189 | { | |
190 | struct route_node *rn; | |
191 | struct prefix p; | |
192 | ||
193 | p = *oi->address; | |
194 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
195 | ||
196 | rn = route_node_lookup (IF_OIFS (oi->ifp), &p); | |
197 | assert (rn); | |
198 | assert (rn->info); | |
199 | rn->info = NULL; | |
200 | route_unlock_node (rn); | |
201 | route_unlock_node (rn); | |
202 | } | |
203 | ||
204 | struct ospf_interface * | |
205 | ospf_if_new (struct ospf *ospf, struct interface *ifp, struct prefix *p) | |
206 | { | |
207 | struct ospf_interface *oi; | |
208 | ||
209 | if ((oi = ospf_if_table_lookup (ifp, p)) == NULL) | |
210 | { | |
211 | oi = XCALLOC (MTYPE_OSPF_IF, sizeof (struct ospf_interface)); | |
212 | memset (oi, 0, sizeof (struct ospf_interface)); | |
213 | } | |
214 | else | |
215 | return oi; | |
216 | ||
217 | /* Set zebra interface pointer. */ | |
218 | oi->ifp = ifp; | |
219 | oi->address = p; | |
220 | ||
221 | ospf_add_to_if (ifp, oi); | |
222 | listnode_add (ospf->oiflist, oi); | |
223 | ||
224 | /* Initialize neighbor list. */ | |
225 | oi->nbrs = route_table_init (); | |
226 | ||
227 | /* Initialize static neighbor list. */ | |
228 | oi->nbr_nbma = list_new (); | |
229 | ||
230 | /* Initialize Link State Acknowledgment list. */ | |
231 | oi->ls_ack = list_new (); | |
232 | oi->ls_ack_direct.ls_ack = list_new (); | |
233 | ||
234 | /* Set default values. */ | |
235 | ospf_if_reset_variables (oi); | |
236 | ||
237 | /* Add pseudo neighbor. */ | |
238 | oi->nbr_self = ospf_nbr_new (oi); | |
239 | ||
240 | oi->ls_upd_queue = route_table_init (); | |
241 | oi->t_ls_upd_event = NULL; | |
242 | oi->t_ls_ack_direct = NULL; | |
243 | ||
244 | oi->crypt_seqnum = time (NULL); | |
245 | ||
246 | #ifdef HAVE_OPAQUE_LSA | |
247 | ospf_opaque_type9_lsa_init (oi); | |
248 | #endif /* HAVE_OPAQUE_LSA */ | |
249 | ||
250 | oi->ospf = ospf; | |
251 | ||
252 | return oi; | |
253 | } | |
254 | ||
255 | /* Restore an interface to its pre UP state | |
256 | Used from ism_interface_down only */ | |
257 | void | |
258 | ospf_if_cleanup (struct ospf_interface *oi) | |
259 | { | |
260 | struct route_node *rn; | |
261 | struct listnode *node, *nnode; | |
262 | struct ospf_neighbor *nbr; | |
263 | struct ospf_nbr_nbma *nbr_nbma; | |
264 | struct ospf_lsa *lsa; | |
265 | ||
266 | /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */ | |
267 | /* delete all static neighbors attached to this interface */ | |
268 | for (ALL_LIST_ELEMENTS (oi->nbr_nbma, node, nnode, nbr_nbma)) | |
269 | { | |
270 | OSPF_POLL_TIMER_OFF (nbr_nbma->t_poll); | |
271 | ||
272 | if (nbr_nbma->nbr) | |
273 | { | |
274 | nbr_nbma->nbr->nbr_nbma = NULL; | |
275 | nbr_nbma->nbr = NULL; | |
276 | } | |
277 | ||
278 | nbr_nbma->oi = NULL; | |
279 | ||
280 | listnode_delete (oi->nbr_nbma, nbr_nbma); | |
281 | } | |
282 | ||
283 | /* send Neighbor event KillNbr to all associated neighbors. */ | |
284 | for (rn = route_top (oi->nbrs); rn; rn = route_next (rn)) | |
285 | if ((nbr = rn->info) != NULL) | |
286 | if (nbr != oi->nbr_self) | |
287 | OSPF_NSM_EVENT_EXECUTE (nbr, NSM_KillNbr); | |
288 | ||
289 | /* Cleanup Link State Acknowlegdment list. */ | |
290 | for (ALL_LIST_ELEMENTS (oi->ls_ack, node, nnode, lsa)) | |
291 | ospf_lsa_unlock (&lsa); /* oi->ls_ack */ | |
292 | list_delete_all_node (oi->ls_ack); | |
293 | ||
294 | oi->crypt_seqnum = 0; | |
295 | ||
296 | /* Empty link state update queue */ | |
297 | ospf_ls_upd_queue_empty (oi); | |
298 | ||
299 | /* Reset pseudo neighbor. */ | |
300 | ospf_nbr_self_reset (oi); | |
301 | } | |
302 | ||
303 | void | |
304 | ospf_if_free (struct ospf_interface *oi) | |
305 | { | |
306 | ospf_if_down (oi); | |
307 | ||
308 | assert (oi->state == ISM_Down); | |
309 | ||
310 | #ifdef HAVE_OPAQUE_LSA | |
311 | ospf_opaque_type9_lsa_term (oi); | |
312 | #endif /* HAVE_OPAQUE_LSA */ | |
313 | ||
314 | /* Free Pseudo Neighbour */ | |
315 | ospf_nbr_delete (oi->nbr_self); | |
316 | ||
317 | route_table_finish (oi->nbrs); | |
318 | route_table_finish (oi->ls_upd_queue); | |
319 | ||
320 | /* Free any lists that should be freed */ | |
321 | list_free (oi->nbr_nbma); | |
322 | ||
323 | list_free (oi->ls_ack); | |
324 | list_free (oi->ls_ack_direct.ls_ack); | |
325 | ||
326 | ospf_delete_from_if (oi->ifp, oi); | |
327 | ||
328 | listnode_delete (oi->ospf->oiflist, oi); | |
329 | listnode_delete (oi->area->oiflist, oi); | |
330 | ||
331 | thread_cancel_event (master, oi); | |
332 | ||
333 | memset (oi, 0, sizeof (*oi)); | |
334 | XFREE (MTYPE_OSPF_IF, oi); | |
335 | } | |
336 | ||
337 | ||
338 | /* | |
339 | * check if interface with given address is configured and | |
340 | * return it if yes. special treatment for PtP networks. | |
341 | */ | |
342 | struct ospf_interface * | |
343 | ospf_if_is_configured (struct ospf *ospf, struct in_addr *address) | |
344 | { | |
345 | struct listnode *node, *nnode; | |
346 | struct ospf_interface *oi; | |
347 | struct prefix_ipv4 addr; | |
348 | ||
349 | addr.family = AF_INET; | |
350 | addr.prefix = *address; | |
351 | addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
352 | ||
353 | for (ALL_LIST_ELEMENTS (ospf->oiflist, node, nnode, oi)) | |
354 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
355 | { | |
356 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
357 | { | |
358 | if (htonl(oi->ifp->ifindex) == address->s_addr) | |
359 | return oi; | |
360 | } | |
361 | else if (oi->type == OSPF_IFTYPE_POINTOPOINT) | |
362 | { | |
363 | /* special leniency: match if addr is anywhere on peer subnet */ | |
364 | if (prefix_match(CONNECTED_PREFIX(oi->connected), | |
365 | (struct prefix *)&addr)) | |
366 | return oi; | |
367 | } | |
368 | else | |
369 | { | |
370 | if (IPV4_ADDR_SAME (address, &oi->address->u.prefix4)) | |
371 | return oi; | |
372 | } | |
373 | } | |
374 | return NULL; | |
375 | } | |
376 | ||
377 | int | |
378 | ospf_if_is_up (struct ospf_interface *oi) | |
379 | { | |
380 | return if_is_up (oi->ifp); | |
381 | } | |
382 | ||
383 | struct ospf_interface * | |
384 | ospf_if_exists (struct ospf_interface *oic) | |
385 | { | |
386 | struct listnode *node; | |
387 | struct ospf *ospf; | |
388 | struct ospf_interface *oi; | |
389 | ||
390 | if ((ospf = ospf_lookup ()) == NULL) | |
391 | return NULL; | |
392 | ||
393 | for (ALL_LIST_ELEMENTS_RO (ospf->oiflist, node, oi)) | |
394 | if (oi == oic) | |
395 | return oi; | |
396 | ||
397 | return NULL; | |
398 | } | |
399 | ||
400 | /* Lookup OSPF interface by router LSA posistion */ | |
401 | struct ospf_interface * | |
402 | ospf_if_lookup_by_lsa_pos (struct ospf_area *area, int lsa_pos) | |
403 | { | |
404 | struct listnode *node; | |
405 | struct ospf_interface *oi; | |
406 | ||
407 | for (ALL_LIST_ELEMENTS_RO (area->oiflist, node, oi)) | |
408 | { | |
409 | if (lsa_pos >= oi->lsa_pos_beg && lsa_pos < oi->lsa_pos_end) | |
410 | return oi; | |
411 | } | |
412 | return NULL; | |
413 | } | |
414 | ||
415 | struct ospf_interface * | |
416 | ospf_if_lookup_by_local_addr (struct ospf *ospf, | |
417 | struct interface *ifp, struct in_addr address) | |
418 | { | |
419 | struct listnode *node; | |
420 | struct ospf_interface *oi; | |
421 | ||
422 | for (ALL_LIST_ELEMENTS_RO (ospf->oiflist, node, oi)) | |
423 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
424 | { | |
425 | if (ifp && oi->ifp != ifp) | |
426 | continue; | |
427 | ||
428 | if (IPV4_ADDR_SAME (&address, &oi->address->u.prefix4)) | |
429 | return oi; | |
430 | } | |
431 | ||
432 | return NULL; | |
433 | } | |
434 | ||
435 | struct ospf_interface * | |
436 | ospf_if_lookup_by_prefix (struct ospf *ospf, struct prefix_ipv4 *p) | |
437 | { | |
438 | struct listnode *node; | |
439 | struct ospf_interface *oi; | |
440 | ||
441 | /* Check each Interface. */ | |
442 | for (ALL_LIST_ELEMENTS_RO (ospf->oiflist, node, oi)) | |
443 | { | |
444 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
445 | { | |
446 | struct prefix ptmp; | |
447 | ||
448 | prefix_copy (&ptmp, CONNECTED_PREFIX(oi->connected)); | |
449 | apply_mask (&ptmp); | |
450 | if (prefix_same (&ptmp, (struct prefix *) p)) | |
451 | return oi; | |
452 | } | |
453 | } | |
454 | return NULL; | |
455 | } | |
456 | ||
457 | /* determine receiving interface by ifp and source address */ | |
458 | struct ospf_interface * | |
459 | ospf_if_lookup_recv_if (struct ospf *ospf, struct in_addr src, | |
460 | struct interface *ifp) | |
461 | { | |
462 | struct route_node *rn; | |
463 | struct prefix_ipv4 addr; | |
464 | struct ospf_interface *oi, *match; | |
465 | ||
466 | addr.family = AF_INET; | |
467 | addr.prefix = src; | |
468 | addr.prefixlen = IPV4_MAX_BITLEN; | |
469 | ||
470 | match = NULL; | |
471 | ||
472 | for (rn = route_top (IF_OIFS (ifp)); rn; rn = route_next (rn)) | |
473 | { | |
474 | oi = rn->info; | |
475 | ||
476 | if (!oi) /* oi can be NULL for PtP aliases */ | |
477 | continue; | |
478 | ||
479 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
480 | continue; | |
481 | ||
482 | if (if_is_loopback (oi->ifp)) | |
483 | continue; | |
484 | ||
485 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
486 | match = oi; | |
487 | else if (prefix_match (CONNECTED_PREFIX(oi->connected), | |
488 | (struct prefix *) &addr)) | |
489 | { | |
490 | if ( (match == NULL) || | |
491 | (match->address->prefixlen < oi->address->prefixlen) | |
492 | ) | |
493 | match = oi; | |
494 | } | |
495 | } | |
496 | ||
497 | return match; | |
498 | } | |
499 | ||
500 | void | |
501 | ospf_if_stream_set (struct ospf_interface *oi) | |
502 | { | |
503 | /* set output fifo queue. */ | |
504 | if (oi->obuf == NULL) | |
505 | oi->obuf = ospf_fifo_new (); | |
506 | } | |
507 | ||
508 | void | |
509 | ospf_if_stream_unset (struct ospf_interface *oi) | |
510 | { | |
511 | struct ospf *ospf = oi->ospf; | |
512 | ||
513 | if (oi->obuf) | |
514 | { | |
515 | ospf_fifo_free (oi->obuf); | |
516 | oi->obuf = NULL; | |
517 | ||
518 | if (oi->on_write_q) | |
519 | { | |
520 | listnode_delete (ospf->oi_write_q, oi); | |
521 | if (list_isempty(ospf->oi_write_q)) | |
522 | OSPF_TIMER_OFF (ospf->t_write); | |
523 | oi->on_write_q = 0; | |
524 | } | |
525 | } | |
526 | } | |
527 | ||
528 | ||
529 | static struct ospf_if_params * | |
530 | ospf_new_if_params (void) | |
531 | { | |
532 | struct ospf_if_params *oip; | |
533 | ||
534 | oip = XCALLOC (MTYPE_OSPF_IF_PARAMS, sizeof (struct ospf_if_params)); | |
535 | ||
536 | if (!oip) | |
537 | return NULL; | |
538 | ||
539 | UNSET_IF_PARAM (oip, output_cost_cmd); | |
540 | UNSET_IF_PARAM (oip, transmit_delay); | |
541 | UNSET_IF_PARAM (oip, retransmit_interval); | |
542 | UNSET_IF_PARAM (oip, passive_interface); | |
543 | UNSET_IF_PARAM (oip, v_hello); | |
544 | UNSET_IF_PARAM (oip, fast_hello); | |
545 | UNSET_IF_PARAM (oip, v_wait); | |
546 | UNSET_IF_PARAM (oip, priority); | |
547 | UNSET_IF_PARAM (oip, type); | |
548 | UNSET_IF_PARAM (oip, auth_simple); | |
549 | UNSET_IF_PARAM (oip, auth_crypt); | |
550 | UNSET_IF_PARAM (oip, auth_type); | |
551 | ||
552 | oip->auth_crypt = list_new (); | |
553 | ||
554 | oip->network_lsa_seqnum = htonl(OSPF_INITIAL_SEQUENCE_NUMBER); | |
555 | ||
556 | return oip; | |
557 | } | |
558 | ||
559 | void | |
560 | ospf_del_if_params (struct ospf_if_params *oip) | |
561 | { | |
562 | list_delete (oip->auth_crypt); | |
563 | bfd_info_free(&(oip->bfd_info)); | |
564 | XFREE (MTYPE_OSPF_IF_PARAMS, oip); | |
565 | } | |
566 | ||
567 | void | |
568 | ospf_free_if_params (struct interface *ifp, struct in_addr addr) | |
569 | { | |
570 | struct ospf_if_params *oip; | |
571 | struct prefix_ipv4 p; | |
572 | struct route_node *rn; | |
573 | ||
574 | p.family = AF_INET; | |
575 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
576 | p.prefix = addr; | |
577 | rn = route_node_lookup (IF_OIFS_PARAMS (ifp), (struct prefix*)&p); | |
578 | if (!rn || !rn->info) | |
579 | return; | |
580 | ||
581 | oip = rn->info; | |
582 | route_unlock_node (rn); | |
583 | ||
584 | if (!OSPF_IF_PARAM_CONFIGURED (oip, output_cost_cmd) && | |
585 | !OSPF_IF_PARAM_CONFIGURED (oip, transmit_delay) && | |
586 | !OSPF_IF_PARAM_CONFIGURED (oip, retransmit_interval) && | |
587 | !OSPF_IF_PARAM_CONFIGURED (oip, passive_interface) && | |
588 | !OSPF_IF_PARAM_CONFIGURED (oip, v_hello) && | |
589 | !OSPF_IF_PARAM_CONFIGURED (oip, fast_hello) && | |
590 | !OSPF_IF_PARAM_CONFIGURED (oip, v_wait) && | |
591 | !OSPF_IF_PARAM_CONFIGURED (oip, priority) && | |
592 | !OSPF_IF_PARAM_CONFIGURED (oip, type) && | |
593 | !OSPF_IF_PARAM_CONFIGURED (oip, auth_simple) && | |
594 | !OSPF_IF_PARAM_CONFIGURED (oip, auth_type) && | |
595 | listcount (oip->auth_crypt) == 0 && | |
596 | ntohl (oip->network_lsa_seqnum) != OSPF_INITIAL_SEQUENCE_NUMBER) | |
597 | { | |
598 | ospf_del_if_params (oip); | |
599 | rn->info = NULL; | |
600 | route_unlock_node (rn); | |
601 | } | |
602 | } | |
603 | ||
604 | struct ospf_if_params * | |
605 | ospf_lookup_if_params (struct interface *ifp, struct in_addr addr) | |
606 | { | |
607 | struct prefix_ipv4 p; | |
608 | struct route_node *rn; | |
609 | ||
610 | p.family = AF_INET; | |
611 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
612 | p.prefix = addr; | |
613 | ||
614 | rn = route_node_lookup (IF_OIFS_PARAMS (ifp), (struct prefix*)&p); | |
615 | ||
616 | if (rn) | |
617 | { | |
618 | route_unlock_node (rn); | |
619 | return rn->info; | |
620 | } | |
621 | ||
622 | return NULL; | |
623 | } | |
624 | ||
625 | struct ospf_if_params * | |
626 | ospf_get_if_params (struct interface *ifp, struct in_addr addr) | |
627 | { | |
628 | struct prefix_ipv4 p; | |
629 | struct route_node *rn; | |
630 | ||
631 | p.family = AF_INET; | |
632 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
633 | p.prefix = addr; | |
634 | ||
635 | rn = route_node_get (IF_OIFS_PARAMS (ifp), (struct prefix*)&p); | |
636 | ||
637 | if (rn->info == NULL) | |
638 | rn->info = ospf_new_if_params (); | |
639 | else | |
640 | route_unlock_node (rn); | |
641 | ||
642 | return rn->info; | |
643 | } | |
644 | ||
645 | void | |
646 | ospf_if_update_params (struct interface *ifp, struct in_addr addr) | |
647 | { | |
648 | struct route_node *rn; | |
649 | struct ospf_interface *oi; | |
650 | ||
651 | for (rn = route_top (IF_OIFS (ifp)); rn; rn = route_next (rn)) | |
652 | { | |
653 | if ((oi = rn->info) == NULL) | |
654 | continue; | |
655 | ||
656 | if (IPV4_ADDR_SAME (&oi->address->u.prefix4, &addr)) | |
657 | oi->params = ospf_lookup_if_params (ifp, oi->address->u.prefix4); | |
658 | } | |
659 | } | |
660 | ||
661 | int | |
662 | ospf_if_new_hook (struct interface *ifp) | |
663 | { | |
664 | int rc = 0; | |
665 | ||
666 | ifp->info = XCALLOC (MTYPE_OSPF_IF_INFO, sizeof (struct ospf_if_info)); | |
667 | ||
668 | IF_OIFS (ifp) = route_table_init (); | |
669 | IF_OIFS_PARAMS (ifp) = route_table_init (); | |
670 | ||
671 | IF_DEF_PARAMS (ifp) = ospf_new_if_params (); | |
672 | ||
673 | SET_IF_PARAM (IF_DEF_PARAMS (ifp), transmit_delay); | |
674 | IF_DEF_PARAMS (ifp)->transmit_delay = OSPF_TRANSMIT_DELAY_DEFAULT; | |
675 | ||
676 | SET_IF_PARAM (IF_DEF_PARAMS (ifp), retransmit_interval); | |
677 | IF_DEF_PARAMS (ifp)->retransmit_interval = OSPF_RETRANSMIT_INTERVAL_DEFAULT; | |
678 | ||
679 | SET_IF_PARAM (IF_DEF_PARAMS (ifp), priority); | |
680 | IF_DEF_PARAMS (ifp)->priority = OSPF_ROUTER_PRIORITY_DEFAULT; | |
681 | ||
682 | IF_DEF_PARAMS (ifp)->mtu_ignore = OSPF_MTU_IGNORE_DEFAULT; | |
683 | ||
684 | SET_IF_PARAM (IF_DEF_PARAMS (ifp), v_hello); | |
685 | IF_DEF_PARAMS (ifp)->v_hello = OSPF_HELLO_INTERVAL_DEFAULT; | |
686 | ||
687 | SET_IF_PARAM (IF_DEF_PARAMS (ifp), fast_hello); | |
688 | IF_DEF_PARAMS (ifp)->fast_hello = OSPF_FAST_HELLO_DEFAULT; | |
689 | ||
690 | SET_IF_PARAM (IF_DEF_PARAMS (ifp), v_wait); | |
691 | IF_DEF_PARAMS (ifp)->v_wait = OSPF_ROUTER_DEAD_INTERVAL_DEFAULT; | |
692 | ||
693 | SET_IF_PARAM (IF_DEF_PARAMS (ifp), auth_simple); | |
694 | memset (IF_DEF_PARAMS (ifp)->auth_simple, 0, OSPF_AUTH_SIMPLE_SIZE); | |
695 | ||
696 | SET_IF_PARAM (IF_DEF_PARAMS (ifp), auth_type); | |
697 | IF_DEF_PARAMS (ifp)->auth_type = OSPF_AUTH_NOTSET; | |
698 | ||
699 | #ifdef HAVE_OPAQUE_LSA | |
700 | rc = ospf_opaque_new_if (ifp); | |
701 | #endif /* HAVE_OPAQUE_LSA */ | |
702 | return rc; | |
703 | } | |
704 | ||
705 | static int | |
706 | ospf_if_delete_hook (struct interface *ifp) | |
707 | { | |
708 | int rc = 0; | |
709 | struct route_node *rn; | |
710 | #ifdef HAVE_OPAQUE_LSA | |
711 | rc = ospf_opaque_del_if (ifp); | |
712 | #endif /* HAVE_OPAQUE_LSA */ | |
713 | ||
714 | route_table_finish (IF_OIFS (ifp)); | |
715 | ||
716 | for (rn = route_top (IF_OIFS_PARAMS (ifp)); rn; rn = route_next (rn)) | |
717 | if (rn->info) | |
718 | ospf_del_if_params (rn->info); | |
719 | route_table_finish (IF_OIFS_PARAMS (ifp)); | |
720 | ||
721 | ospf_del_if_params ((struct ospf_if_params *) IF_DEF_PARAMS (ifp)); | |
722 | XFREE (MTYPE_OSPF_IF_INFO, ifp->info); | |
723 | ifp->info = NULL; | |
724 | ||
725 | return rc; | |
726 | } | |
727 | ||
728 | int | |
729 | ospf_if_is_enable (struct ospf_interface *oi) | |
730 | { | |
731 | if (!if_is_loopback (oi->ifp)) | |
732 | if (if_is_up (oi->ifp)) | |
733 | return 1; | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | void | |
739 | ospf_if_set_multicast(struct ospf_interface *oi) | |
740 | { | |
741 | if ((oi->state > ISM_Loopback) && | |
742 | (oi->type != OSPF_IFTYPE_LOOPBACK) && | |
743 | (oi->type != OSPF_IFTYPE_VIRTUALLINK) && | |
744 | (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) | |
745 | { | |
746 | /* The interface should belong to the OSPF-all-routers group. */ | |
747 | if (!OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS) && | |
748 | (ospf_if_add_allspfrouters(oi->ospf, oi->address, | |
749 | oi->ifp->ifindex) >= 0)) | |
750 | /* Set the flag only if the system call to join succeeded. */ | |
751 | OI_MEMBER_JOINED(oi, MEMBER_ALLROUTERS); | |
752 | } | |
753 | else | |
754 | { | |
755 | /* The interface should NOT belong to the OSPF-all-routers group. */ | |
756 | if (OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS)) | |
757 | { | |
758 | /* Only actually drop if this is the last reference */ | |
759 | if (OI_MEMBER_COUNT(oi, MEMBER_ALLROUTERS) == 1) | |
760 | ospf_if_drop_allspfrouters (oi->ospf, oi->address, | |
761 | oi->ifp->ifindex); | |
762 | /* Unset the flag regardless of whether the system call to leave | |
763 | the group succeeded, since it's much safer to assume that | |
764 | we are not a member. */ | |
765 | OI_MEMBER_LEFT(oi,MEMBER_ALLROUTERS); | |
766 | } | |
767 | } | |
768 | ||
769 | if (((oi->type == OSPF_IFTYPE_BROADCAST) || | |
770 | (oi->type == OSPF_IFTYPE_POINTOPOINT)) && | |
771 | ((oi->state == ISM_DR) || (oi->state == ISM_Backup)) && | |
772 | (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) | |
773 | { | |
774 | /* The interface should belong to the OSPF-designated-routers group. */ | |
775 | if (!OI_MEMBER_CHECK(oi, MEMBER_DROUTERS) && | |
776 | (ospf_if_add_alldrouters(oi->ospf, oi->address, | |
777 | oi->ifp->ifindex) >= 0)) | |
778 | /* Set the flag only if the system call to join succeeded. */ | |
779 | OI_MEMBER_JOINED(oi, MEMBER_DROUTERS); | |
780 | } | |
781 | else | |
782 | { | |
783 | /* The interface should NOT belong to the OSPF-designated-routers group */ | |
784 | if (OI_MEMBER_CHECK(oi, MEMBER_DROUTERS)) | |
785 | { | |
786 | /* drop only if last reference */ | |
787 | if (OI_MEMBER_COUNT(oi, MEMBER_DROUTERS) == 1) | |
788 | ospf_if_drop_alldrouters(oi->ospf, oi->address, oi->ifp->ifindex); | |
789 | ||
790 | /* Unset the flag regardless of whether the system call to leave | |
791 | the group succeeded, since it's much safer to assume that | |
792 | we are not a member. */ | |
793 | OI_MEMBER_LEFT(oi, MEMBER_DROUTERS); | |
794 | } | |
795 | } | |
796 | } | |
797 | ||
798 | int | |
799 | ospf_if_up (struct ospf_interface *oi) | |
800 | { | |
801 | if (oi == NULL) | |
802 | return 0; | |
803 | ||
804 | if (oi->type == OSPF_IFTYPE_LOOPBACK) | |
805 | OSPF_ISM_EVENT_SCHEDULE (oi, ISM_LoopInd); | |
806 | else | |
807 | { | |
808 | struct ospf *ospf = ospf_lookup (); | |
809 | if (ospf != NULL) | |
810 | ospf_adjust_sndbuflen (ospf, oi->ifp->mtu); | |
811 | else | |
812 | zlog_warn ("%s: ospf_lookup() returned NULL", __func__); | |
813 | ospf_if_stream_set (oi); | |
814 | OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceUp); | |
815 | } | |
816 | ||
817 | return 1; | |
818 | } | |
819 | ||
820 | int | |
821 | ospf_if_down (struct ospf_interface *oi) | |
822 | { | |
823 | if (oi == NULL) | |
824 | return 0; | |
825 | ||
826 | OSPF_ISM_EVENT_EXECUTE (oi, ISM_InterfaceDown); | |
827 | /* delete position in router LSA */ | |
828 | oi->lsa_pos_beg = 0; | |
829 | oi->lsa_pos_end = 0; | |
830 | /* Shutdown packet reception and sending */ | |
831 | ospf_if_stream_unset (oi); | |
832 | ||
833 | return 1; | |
834 | } | |
835 | ||
836 | ||
837 | /* Virtual Link related functions. */ | |
838 | ||
839 | struct ospf_vl_data * | |
840 | ospf_vl_data_new (struct ospf_area *area, struct in_addr vl_peer) | |
841 | { | |
842 | struct ospf_vl_data *vl_data; | |
843 | ||
844 | vl_data = XCALLOC (MTYPE_OSPF_VL_DATA, sizeof (struct ospf_vl_data)); | |
845 | ||
846 | vl_data->vl_peer.s_addr = vl_peer.s_addr; | |
847 | vl_data->vl_area_id = area->area_id; | |
848 | vl_data->format = area->format; | |
849 | ||
850 | return vl_data; | |
851 | } | |
852 | ||
853 | void | |
854 | ospf_vl_data_free (struct ospf_vl_data *vl_data) | |
855 | { | |
856 | XFREE (MTYPE_OSPF_VL_DATA, vl_data); | |
857 | } | |
858 | ||
859 | u_int vlink_count = 0; | |
860 | ||
861 | struct ospf_interface * | |
862 | ospf_vl_new (struct ospf *ospf, struct ospf_vl_data *vl_data) | |
863 | { | |
864 | struct ospf_interface * voi; | |
865 | struct interface * vi; | |
866 | char ifname[INTERFACE_NAMSIZ + 1]; | |
867 | struct ospf_area *area; | |
868 | struct in_addr area_id; | |
869 | struct connected *co; | |
870 | struct prefix_ipv4 *p; | |
871 | ||
872 | if (IS_DEBUG_OSPF_EVENT) | |
873 | zlog_debug ("ospf_vl_new(): Start"); | |
874 | if (vlink_count == OSPF_VL_MAX_COUNT) | |
875 | { | |
876 | if (IS_DEBUG_OSPF_EVENT) | |
877 | zlog_debug ("ospf_vl_new(): Alarm: " | |
878 | "cannot create more than OSPF_MAX_VL_COUNT virtual links"); | |
879 | return NULL; | |
880 | } | |
881 | ||
882 | if (IS_DEBUG_OSPF_EVENT) | |
883 | zlog_debug ("ospf_vl_new(): creating pseudo zebra interface"); | |
884 | ||
885 | snprintf (ifname, sizeof(ifname), "VLINK%d", vlink_count); | |
886 | vi = if_create (ifname, strnlen(ifname, sizeof(ifname))); | |
887 | /* | |
888 | * if_create sets ZEBRA_INTERFACE_LINKDETECTION | |
889 | * virtual links don't need this. | |
890 | */ | |
891 | UNSET_FLAG (vi->status, ZEBRA_INTERFACE_LINKDETECTION); | |
892 | co = connected_new (); | |
893 | co->ifp = vi; | |
894 | listnode_add (vi->connected, co); | |
895 | ||
896 | p = prefix_ipv4_new (); | |
897 | p->family = AF_INET; | |
898 | p->prefix.s_addr = 0; | |
899 | p->prefixlen = 0; | |
900 | ||
901 | co->address = (struct prefix *)p; | |
902 | ||
903 | voi = ospf_if_new (ospf, vi, co->address); | |
904 | if (voi == NULL) | |
905 | { | |
906 | if (IS_DEBUG_OSPF_EVENT) | |
907 | zlog_debug ("ospf_vl_new(): Alarm: OSPF int structure is not created"); | |
908 | return NULL; | |
909 | } | |
910 | voi->connected = co; | |
911 | voi->vl_data = vl_data; | |
912 | voi->ifp->mtu = OSPF_VL_MTU; | |
913 | voi->type = OSPF_IFTYPE_VIRTUALLINK; | |
914 | ||
915 | vlink_count++; | |
916 | if (IS_DEBUG_OSPF_EVENT) | |
917 | zlog_debug ("ospf_vl_new(): Created name: %s", ifname); | |
918 | if (IS_DEBUG_OSPF_EVENT) | |
919 | zlog_debug ("ospf_vl_new(): set if->name to %s", vi->name); | |
920 | ||
921 | area_id.s_addr = 0; | |
922 | area = ospf_area_get (ospf, area_id, OSPF_AREA_ID_FORMAT_ADDRESS); | |
923 | voi->area = area; | |
924 | ||
925 | if (IS_DEBUG_OSPF_EVENT) | |
926 | zlog_debug ("ospf_vl_new(): set associated area to the backbone"); | |
927 | ||
928 | ospf_nbr_add_self (voi); | |
929 | ospf_area_add_if (voi->area, voi); | |
930 | ||
931 | ospf_if_stream_set (voi); | |
932 | ||
933 | if (IS_DEBUG_OSPF_EVENT) | |
934 | zlog_debug ("ospf_vl_new(): Stop"); | |
935 | return voi; | |
936 | } | |
937 | ||
938 | static void | |
939 | ospf_vl_if_delete (struct ospf_vl_data *vl_data) | |
940 | { | |
941 | struct interface *ifp = vl_data->vl_oi->ifp; | |
942 | vl_data->vl_oi->address->u.prefix4.s_addr = 0; | |
943 | vl_data->vl_oi->address->prefixlen = 0; | |
944 | ospf_if_free (vl_data->vl_oi); | |
945 | if_delete (ifp); | |
946 | vlink_count--; | |
947 | } | |
948 | ||
949 | /* Look up vl_data for given peer, optionally qualified to be in the | |
950 | * specified area. NULL area returns first found.. | |
951 | */ | |
952 | struct ospf_vl_data * | |
953 | ospf_vl_lookup (struct ospf *ospf, struct ospf_area *area, | |
954 | struct in_addr vl_peer) | |
955 | { | |
956 | struct ospf_vl_data *vl_data; | |
957 | struct listnode *node; | |
958 | ||
959 | if (IS_DEBUG_OSPF_EVENT) | |
960 | { | |
961 | zlog_debug ("%s: Looking for %s", __func__, inet_ntoa (vl_peer)); | |
962 | if (area) | |
963 | zlog_debug ("%s: in area %s", __func__, inet_ntoa (area->area_id)); | |
964 | } | |
965 | ||
966 | for (ALL_LIST_ELEMENTS_RO (ospf->vlinks, node, vl_data)) | |
967 | { | |
968 | if (IS_DEBUG_OSPF_EVENT) | |
969 | zlog_debug ("%s: VL %s, peer %s", __func__, | |
970 | vl_data->vl_oi->ifp->name, | |
971 | inet_ntoa (vl_data->vl_peer)); | |
972 | ||
973 | if (area && !IPV4_ADDR_SAME (&vl_data->vl_area_id, &area->area_id)) | |
974 | continue; | |
975 | ||
976 | if (IPV4_ADDR_SAME (&vl_data->vl_peer, &vl_peer)) | |
977 | return vl_data; | |
978 | } | |
979 | ||
980 | return NULL; | |
981 | } | |
982 | ||
983 | static void | |
984 | ospf_vl_shutdown (struct ospf_vl_data *vl_data) | |
985 | { | |
986 | struct ospf_interface *oi; | |
987 | ||
988 | if ((oi = vl_data->vl_oi) == NULL) | |
989 | return; | |
990 | ||
991 | oi->address->u.prefix4.s_addr = 0; | |
992 | oi->address->prefixlen = 0; | |
993 | ||
994 | UNSET_FLAG (oi->ifp->flags, IFF_UP); | |
995 | /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */ | |
996 | OSPF_ISM_EVENT_EXECUTE (oi, ISM_InterfaceDown); | |
997 | } | |
998 | ||
999 | void | |
1000 | ospf_vl_add (struct ospf *ospf, struct ospf_vl_data *vl_data) | |
1001 | { | |
1002 | listnode_add (ospf->vlinks, vl_data); | |
1003 | #ifdef HAVE_SNMP | |
1004 | ospf_snmp_vl_add (vl_data); | |
1005 | #endif /* HAVE_SNMP */ | |
1006 | } | |
1007 | ||
1008 | void | |
1009 | ospf_vl_delete (struct ospf *ospf, struct ospf_vl_data *vl_data) | |
1010 | { | |
1011 | ospf_vl_shutdown (vl_data); | |
1012 | ospf_vl_if_delete (vl_data); | |
1013 | ||
1014 | #ifdef HAVE_SNMP | |
1015 | ospf_snmp_vl_delete (vl_data); | |
1016 | #endif /* HAVE_SNMP */ | |
1017 | listnode_delete (ospf->vlinks, vl_data); | |
1018 | ||
1019 | ospf_vl_data_free (vl_data); | |
1020 | } | |
1021 | ||
1022 | static int | |
1023 | ospf_vl_set_params (struct ospf_vl_data *vl_data, struct vertex *v) | |
1024 | { | |
1025 | int changed = 0; | |
1026 | struct ospf_interface *voi; | |
1027 | struct listnode *node; | |
1028 | struct vertex_parent *vp = NULL; | |
1029 | unsigned int i; | |
1030 | struct router_lsa *rl; | |
1031 | ||
1032 | voi = vl_data->vl_oi; | |
1033 | ||
1034 | if (voi->output_cost != v->distance) | |
1035 | { | |
1036 | ||
1037 | voi->output_cost = v->distance; | |
1038 | changed = 1; | |
1039 | } | |
1040 | ||
1041 | for (ALL_LIST_ELEMENTS_RO (v->parents, node, vp)) | |
1042 | { | |
1043 | vl_data->nexthop.oi = vp->nexthop->oi; | |
1044 | vl_data->nexthop.router = vp->nexthop->router; | |
1045 | ||
1046 | if (!IPV4_ADDR_SAME(&voi->address->u.prefix4, | |
1047 | &vl_data->nexthop.oi->address->u.prefix4)) | |
1048 | changed = 1; | |
1049 | ||
1050 | voi->address->u.prefix4 = vl_data->nexthop.oi->address->u.prefix4; | |
1051 | voi->address->prefixlen = vl_data->nexthop.oi->address->prefixlen; | |
1052 | ||
1053 | break; /* We take the first interface. */ | |
1054 | } | |
1055 | ||
1056 | rl = (struct router_lsa *)v->lsa; | |
1057 | ||
1058 | /* use SPF determined backlink index in struct vertex | |
1059 | * for virtual link destination address | |
1060 | */ | |
1061 | if (vp && vp->backlink >= 0) | |
1062 | { | |
1063 | if (!IPV4_ADDR_SAME (&vl_data->peer_addr, | |
1064 | &rl->link[vp->backlink].link_data)) | |
1065 | changed = 1; | |
1066 | vl_data->peer_addr = rl->link[vp->backlink].link_data; | |
1067 | } | |
1068 | else | |
1069 | { | |
1070 | /* This is highly odd, there is no backlink index | |
1071 | * there should be due to the ospf_spf_has_link() check | |
1072 | * in SPF. Lets warn and try pick a link anyway. | |
1073 | */ | |
1074 | zlog_warn ("ospf_vl_set_params: No backlink for %s!", | |
1075 | vl_data->vl_oi->ifp->name); | |
1076 | for (i = 0; i < ntohs (rl->links); i++) | |
1077 | { | |
1078 | switch (rl->link[i].type) | |
1079 | { | |
1080 | case LSA_LINK_TYPE_VIRTUALLINK: | |
1081 | if (IS_DEBUG_OSPF_EVENT) | |
1082 | zlog_debug ("found back link through VL"); | |
1083 | case LSA_LINK_TYPE_TRANSIT: | |
1084 | case LSA_LINK_TYPE_POINTOPOINT: | |
1085 | if (!IPV4_ADDR_SAME (&vl_data->peer_addr, | |
1086 | &rl->link[i].link_data)) | |
1087 | changed = 1; | |
1088 | vl_data->peer_addr = rl->link[i].link_data; | |
1089 | } | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | if (IS_DEBUG_OSPF_EVENT) | |
1094 | zlog_debug ("%s: %s peer address: %s, cost: %d,%schanged", __func__, | |
1095 | vl_data->vl_oi->ifp->name, | |
1096 | inet_ntoa(vl_data->peer_addr), | |
1097 | voi->output_cost, | |
1098 | (changed ? " " : " un")); | |
1099 | ||
1100 | return changed; | |
1101 | } | |
1102 | ||
1103 | ||
1104 | void | |
1105 | ospf_vl_up_check (struct ospf_area *area, struct in_addr rid, | |
1106 | struct vertex *v) | |
1107 | { | |
1108 | struct ospf *ospf = area->ospf; | |
1109 | struct listnode *node; | |
1110 | struct ospf_vl_data *vl_data; | |
1111 | struct ospf_interface *oi; | |
1112 | ||
1113 | if (IS_DEBUG_OSPF_EVENT) | |
1114 | { | |
1115 | zlog_debug ("ospf_vl_up_check(): Start"); | |
1116 | zlog_debug ("ospf_vl_up_check(): Router ID is %s", inet_ntoa (rid)); | |
1117 | zlog_debug ("ospf_vl_up_check(): Area is %s", inet_ntoa (area->area_id)); | |
1118 | } | |
1119 | ||
1120 | for (ALL_LIST_ELEMENTS_RO (ospf->vlinks, node, vl_data)) | |
1121 | { | |
1122 | if (IS_DEBUG_OSPF_EVENT) | |
1123 | { | |
1124 | zlog_debug ("%s: considering VL, %s in area %s", __func__, | |
1125 | vl_data->vl_oi->ifp->name, | |
1126 | inet_ntoa (vl_data->vl_area_id)); | |
1127 | zlog_debug ("%s: peer ID: %s", __func__, | |
1128 | inet_ntoa (vl_data->vl_peer)); | |
1129 | } | |
1130 | ||
1131 | if (IPV4_ADDR_SAME (&vl_data->vl_peer, &rid) && | |
1132 | IPV4_ADDR_SAME (&vl_data->vl_area_id, &area->area_id)) | |
1133 | { | |
1134 | oi = vl_data->vl_oi; | |
1135 | SET_FLAG (vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1136 | ||
1137 | if (IS_DEBUG_OSPF_EVENT) | |
1138 | zlog_debug ("ospf_vl_up_check(): this VL matched"); | |
1139 | ||
1140 | if (oi->state == ISM_Down) | |
1141 | { | |
1142 | if (IS_DEBUG_OSPF_EVENT) | |
1143 | zlog_debug ("ospf_vl_up_check(): VL is down, waking it up"); | |
1144 | SET_FLAG (oi->ifp->flags, IFF_UP); | |
1145 | OSPF_ISM_EVENT_EXECUTE(oi,ISM_InterfaceUp); | |
1146 | } | |
1147 | ||
1148 | if (ospf_vl_set_params (vl_data, v)) | |
1149 | { | |
1150 | if (IS_DEBUG_OSPF (ism, ISM_EVENTS)) | |
1151 | zlog_debug ("ospf_vl_up_check: VL cost change," | |
1152 | " scheduling router lsa refresh"); | |
1153 | if (ospf->backbone) | |
1154 | ospf_router_lsa_update_area (ospf->backbone); | |
1155 | else if (IS_DEBUG_OSPF (ism, ISM_EVENTS)) | |
1156 | zlog_debug ("ospf_vl_up_check: VL cost change, no backbone!"); | |
1157 | } | |
1158 | } | |
1159 | } | |
1160 | } | |
1161 | ||
1162 | void | |
1163 | ospf_vl_unapprove (struct ospf *ospf) | |
1164 | { | |
1165 | struct listnode *node; | |
1166 | struct ospf_vl_data *vl_data; | |
1167 | ||
1168 | for (ALL_LIST_ELEMENTS_RO (ospf->vlinks, node, vl_data)) | |
1169 | UNSET_FLAG (vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1170 | } | |
1171 | ||
1172 | void | |
1173 | ospf_vl_shut_unapproved (struct ospf *ospf) | |
1174 | { | |
1175 | struct listnode *node, *nnode; | |
1176 | struct ospf_vl_data *vl_data; | |
1177 | ||
1178 | for (ALL_LIST_ELEMENTS (ospf->vlinks, node, nnode, vl_data)) | |
1179 | if (!CHECK_FLAG (vl_data->flags, OSPF_VL_FLAG_APPROVED)) | |
1180 | ospf_vl_shutdown (vl_data); | |
1181 | } | |
1182 | ||
1183 | int | |
1184 | ospf_full_virtual_nbrs (struct ospf_area *area) | |
1185 | { | |
1186 | if (IS_DEBUG_OSPF_EVENT) | |
1187 | { | |
1188 | zlog_debug ("counting fully adjacent virtual neighbors in area %s", | |
1189 | inet_ntoa (area->area_id)); | |
1190 | zlog_debug ("there are %d of them", area->full_vls); | |
1191 | } | |
1192 | ||
1193 | return area->full_vls; | |
1194 | } | |
1195 | ||
1196 | int | |
1197 | ospf_vls_in_area (struct ospf_area *area) | |
1198 | { | |
1199 | struct listnode *node; | |
1200 | struct ospf_vl_data *vl_data; | |
1201 | int c = 0; | |
1202 | ||
1203 | for (ALL_LIST_ELEMENTS_RO (area->ospf->vlinks, node, vl_data)) | |
1204 | if (IPV4_ADDR_SAME (&vl_data->vl_area_id, &area->area_id)) | |
1205 | c++; | |
1206 | ||
1207 | return c; | |
1208 | } | |
1209 | ||
1210 | ||
1211 | struct crypt_key * | |
1212 | ospf_crypt_key_new () | |
1213 | { | |
1214 | return XCALLOC (MTYPE_OSPF_CRYPT_KEY, sizeof (struct crypt_key)); | |
1215 | } | |
1216 | ||
1217 | void | |
1218 | ospf_crypt_key_add (struct list *crypt, struct crypt_key *ck) | |
1219 | { | |
1220 | listnode_add (crypt, ck); | |
1221 | } | |
1222 | ||
1223 | struct crypt_key * | |
1224 | ospf_crypt_key_lookup (struct list *auth_crypt, u_char key_id) | |
1225 | { | |
1226 | struct listnode *node; | |
1227 | struct crypt_key *ck; | |
1228 | ||
1229 | for (ALL_LIST_ELEMENTS_RO (auth_crypt, node, ck)) | |
1230 | if (ck->key_id == key_id) | |
1231 | return ck; | |
1232 | ||
1233 | return NULL; | |
1234 | } | |
1235 | ||
1236 | int | |
1237 | ospf_crypt_key_delete (struct list *auth_crypt, u_char key_id) | |
1238 | { | |
1239 | struct listnode *node, *nnode; | |
1240 | struct crypt_key *ck; | |
1241 | ||
1242 | for (ALL_LIST_ELEMENTS (auth_crypt, node, nnode, ck)) | |
1243 | { | |
1244 | if (ck->key_id == key_id) | |
1245 | { | |
1246 | listnode_delete (auth_crypt, ck); | |
1247 | XFREE (MTYPE_OSPF_CRYPT_KEY, ck); | |
1248 | return 1; | |
1249 | } | |
1250 | } | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
1255 | u_char | |
1256 | ospf_default_iftype(struct interface *ifp) | |
1257 | { | |
1258 | if (if_is_pointopoint (ifp)) | |
1259 | return OSPF_IFTYPE_POINTOPOINT; | |
1260 | else if (if_is_loopback (ifp)) | |
1261 | return OSPF_IFTYPE_LOOPBACK; | |
1262 | else | |
1263 | return OSPF_IFTYPE_BROADCAST; | |
1264 | } | |
1265 | ||
1266 | void | |
1267 | ospf_if_init () | |
1268 | { | |
1269 | /* Initialize Zebra interface data structure. */ | |
1270 | om->iflist = vrf_iflist (VRF_DEFAULT); | |
1271 | if_add_hook (IF_NEW_HOOK, ospf_if_new_hook); | |
1272 | if_add_hook (IF_DELETE_HOOK, ospf_if_delete_hook); | |
1273 | } |