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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; | |
a6435618 | 174 | apply_mask(&p); |
d62a17ae | 175 | |
176 | rn = route_node_get(IF_OIFS(ifp), &p); | |
177 | /* rn->info should either be NULL or equal to this oi | |
178 | * as route_node_get may return an existing node | |
179 | */ | |
180 | assert(!rn->info || rn->info == oi); | |
181 | rn->info = oi; | |
718e3744 | 182 | } |
183 | ||
d62a17ae | 184 | static void ospf_delete_from_if(struct interface *ifp, |
185 | struct ospf_interface *oi) | |
718e3744 | 186 | { |
d62a17ae | 187 | struct route_node *rn; |
188 | struct prefix p; | |
189 | ||
190 | p = *oi->address; | |
191 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
192 | ||
193 | rn = route_node_lookup(IF_OIFS(oi->ifp), &p); | |
194 | assert(rn); | |
195 | assert(rn->info); | |
196 | rn->info = NULL; | |
197 | route_unlock_node(rn); | |
198 | route_unlock_node(rn); | |
718e3744 | 199 | } |
200 | ||
d62a17ae | 201 | struct ospf_interface *ospf_if_new(struct ospf *ospf, struct interface *ifp, |
202 | struct prefix *p) | |
718e3744 | 203 | { |
d62a17ae | 204 | struct ospf_interface *oi; |
205 | ||
206 | if ((oi = ospf_if_table_lookup(ifp, p)) == NULL) { | |
207 | oi = XCALLOC(MTYPE_OSPF_IF, sizeof(struct ospf_interface)); | |
208 | memset(oi, 0, sizeof(struct ospf_interface)); | |
209 | } else | |
210 | return oi; | |
211 | ||
212 | /* Set zebra interface pointer. */ | |
213 | oi->ifp = ifp; | |
214 | oi->address = p; | |
215 | ||
216 | ospf_add_to_if(ifp, oi); | |
217 | listnode_add(ospf->oiflist, oi); | |
218 | ||
219 | /* Initialize neighbor list. */ | |
220 | oi->nbrs = route_table_init(); | |
221 | ||
222 | /* Initialize static neighbor list. */ | |
223 | oi->nbr_nbma = list_new(); | |
224 | ||
225 | /* Initialize Link State Acknowledgment list. */ | |
226 | oi->ls_ack = list_new(); | |
227 | oi->ls_ack_direct.ls_ack = list_new(); | |
228 | ||
229 | /* Set default values. */ | |
230 | ospf_if_reset_variables(oi); | |
231 | ||
232 | /* Set pseudo neighbor to Null */ | |
233 | oi->nbr_self = NULL; | |
234 | ||
235 | oi->ls_upd_queue = route_table_init(); | |
236 | oi->t_ls_upd_event = NULL; | |
237 | oi->t_ls_ack_direct = NULL; | |
238 | ||
239 | oi->crypt_seqnum = time(NULL); | |
240 | ||
241 | ospf_opaque_type9_lsa_init(oi); | |
242 | ||
243 | oi->ospf = ospf; | |
244 | QOBJ_REG(oi, ospf_interface); | |
245 | ||
246 | return oi; | |
718e3744 | 247 | } |
248 | ||
249 | /* Restore an interface to its pre UP state | |
250 | Used from ism_interface_down only */ | |
d62a17ae | 251 | void ospf_if_cleanup(struct ospf_interface *oi) |
718e3744 | 252 | { |
d62a17ae | 253 | struct route_node *rn; |
254 | struct listnode *node, *nnode; | |
255 | struct ospf_neighbor *nbr; | |
256 | struct ospf_nbr_nbma *nbr_nbma; | |
257 | struct ospf_lsa *lsa; | |
258 | ||
259 | /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */ | |
260 | /* delete all static neighbors attached to this interface */ | |
261 | for (ALL_LIST_ELEMENTS(oi->nbr_nbma, node, nnode, nbr_nbma)) { | |
262 | OSPF_POLL_TIMER_OFF(nbr_nbma->t_poll); | |
263 | ||
264 | if (nbr_nbma->nbr) { | |
265 | nbr_nbma->nbr->nbr_nbma = NULL; | |
266 | nbr_nbma->nbr = NULL; | |
267 | } | |
268 | ||
269 | nbr_nbma->oi = NULL; | |
270 | ||
271 | listnode_delete(oi->nbr_nbma, nbr_nbma); | |
718e3744 | 272 | } |
273 | ||
d62a17ae | 274 | /* send Neighbor event KillNbr to all associated neighbors. */ |
275 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) | |
276 | if ((nbr = rn->info) != NULL) | |
277 | if (nbr != oi->nbr_self) | |
278 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
279 | ||
280 | /* Cleanup Link State Acknowlegdment list. */ | |
281 | for (ALL_LIST_ELEMENTS(oi->ls_ack, node, nnode, lsa)) | |
282 | ospf_lsa_unlock(&lsa); /* oi->ls_ack */ | |
283 | list_delete_all_node(oi->ls_ack); | |
284 | ||
285 | oi->crypt_seqnum = 0; | |
286 | ||
287 | /* Empty link state update queue */ | |
288 | ospf_ls_upd_queue_empty(oi); | |
289 | ||
290 | /* Reset pseudo neighbor. */ | |
291 | ospf_nbr_self_reset(oi, oi->ospf->router_id); | |
718e3744 | 292 | } |
293 | ||
d62a17ae | 294 | void ospf_if_free(struct ospf_interface *oi) |
718e3744 | 295 | { |
d62a17ae | 296 | ospf_if_down(oi); |
297 | ||
298 | assert(oi->state == ISM_Down); | |
299 | ||
300 | ospf_opaque_type9_lsa_term(oi); | |
301 | ||
302 | QOBJ_UNREG(oi); | |
303 | ||
304 | /* Free Pseudo Neighbour */ | |
305 | ospf_nbr_delete(oi->nbr_self); | |
718e3744 | 306 | |
d62a17ae | 307 | route_table_finish(oi->nbrs); |
308 | route_table_finish(oi->ls_upd_queue); | |
718e3744 | 309 | |
d62a17ae | 310 | /* Free any lists that should be freed */ |
311 | list_free(oi->nbr_nbma); | |
718e3744 | 312 | |
d62a17ae | 313 | list_free(oi->ls_ack); |
314 | list_free(oi->ls_ack_direct.ls_ack); | |
ae19c240 | 315 | |
d62a17ae | 316 | ospf_delete_from_if(oi->ifp, oi); |
718e3744 | 317 | |
d62a17ae | 318 | listnode_delete(oi->ospf->oiflist, oi); |
319 | listnode_delete(oi->area->oiflist, oi); | |
718e3744 | 320 | |
d62a17ae | 321 | thread_cancel_event(master, oi); |
cfd670f3 | 322 | |
d62a17ae | 323 | memset(oi, 0, sizeof(*oi)); |
324 | XFREE(MTYPE_OSPF_IF, oi); | |
718e3744 | 325 | } |
326 | ||
d62a17ae | 327 | int ospf_if_is_up(struct ospf_interface *oi) |
718e3744 | 328 | { |
d62a17ae | 329 | return if_is_up(oi->ifp); |
718e3744 | 330 | } |
331 | ||
d62a17ae | 332 | struct ospf_interface *ospf_if_exists(struct ospf_interface *oic) |
333 | { | |
334 | struct listnode *node; | |
335 | struct ospf *ospf; | |
336 | struct ospf_interface *oi; | |
2db3d05d | 337 | |
d62a17ae | 338 | if ((ospf = ospf_lookup()) == NULL) |
339 | return NULL; | |
2db3d05d | 340 | |
d62a17ae | 341 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) |
342 | if (oi == oic) | |
343 | return oi; | |
1eb8ef25 | 344 | |
d62a17ae | 345 | return NULL; |
2db3d05d | 346 | } |
347 | ||
c81ee5c9 | 348 | /* Lookup OSPF interface by router LSA posistion */ |
d62a17ae | 349 | struct ospf_interface *ospf_if_lookup_by_lsa_pos(struct ospf_area *area, |
350 | int lsa_pos) | |
c81ee5c9 | 351 | { |
d62a17ae | 352 | struct listnode *node; |
353 | struct ospf_interface *oi; | |
c81ee5c9 | 354 | |
d62a17ae | 355 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) { |
356 | if (lsa_pos >= oi->lsa_pos_beg && lsa_pos < oi->lsa_pos_end) | |
357 | return oi; | |
358 | } | |
359 | return NULL; | |
c81ee5c9 JT |
360 | } |
361 | ||
d62a17ae | 362 | struct ospf_interface *ospf_if_lookup_by_local_addr(struct ospf *ospf, |
363 | struct interface *ifp, | |
364 | struct in_addr address) | |
718e3744 | 365 | { |
d62a17ae | 366 | struct listnode *node; |
367 | struct ospf_interface *oi; | |
368 | ||
369 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) | |
370 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
371 | if (ifp && oi->ifp != ifp) | |
372 | continue; | |
373 | ||
374 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
375 | return oi; | |
376 | } | |
377 | ||
378 | return NULL; | |
718e3744 | 379 | } |
380 | ||
d62a17ae | 381 | struct ospf_interface *ospf_if_lookup_by_prefix(struct ospf *ospf, |
382 | struct prefix_ipv4 *p) | |
718e3744 | 383 | { |
d62a17ae | 384 | struct listnode *node; |
385 | struct ospf_interface *oi; | |
386 | ||
387 | /* Check each Interface. */ | |
388 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
389 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
390 | struct prefix ptmp; | |
391 | ||
392 | prefix_copy(&ptmp, CONNECTED_PREFIX(oi->connected)); | |
393 | apply_mask(&ptmp); | |
394 | if (prefix_same(&ptmp, (struct prefix *)p)) | |
395 | return oi; | |
396 | } | |
68980084 | 397 | } |
d62a17ae | 398 | return NULL; |
718e3744 | 399 | } |
400 | ||
05cf46ba | 401 | /* determine receiving interface by ifp and source address */ |
d62a17ae | 402 | struct ospf_interface *ospf_if_lookup_recv_if(struct ospf *ospf, |
403 | struct in_addr src, | |
404 | struct interface *ifp) | |
718e3744 | 405 | { |
d62a17ae | 406 | struct route_node *rn; |
407 | struct prefix_ipv4 addr; | |
408 | struct ospf_interface *oi, *match; | |
409 | ||
410 | addr.family = AF_INET; | |
411 | addr.prefix = src; | |
412 | addr.prefixlen = IPV4_MAX_BITLEN; | |
413 | ||
414 | match = NULL; | |
415 | ||
416 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
417 | oi = rn->info; | |
418 | ||
419 | if (!oi) /* oi can be NULL for PtP aliases */ | |
420 | continue; | |
421 | ||
422 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
423 | continue; | |
424 | ||
425 | if (if_is_loopback(oi->ifp)) | |
426 | continue; | |
427 | ||
428 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
429 | match = oi; | |
430 | else if (prefix_match(CONNECTED_PREFIX(oi->connected), | |
431 | (struct prefix *)&addr)) { | |
9d303b37 DL |
432 | if ((match == NULL) || (match->address->prefixlen |
433 | < oi->address->prefixlen)) | |
d62a17ae | 434 | match = oi; |
435 | } | |
718e3744 | 436 | } |
718e3744 | 437 | |
d62a17ae | 438 | return match; |
718e3744 | 439 | } |
6b0655a2 | 440 | |
d62a17ae | 441 | void ospf_if_stream_set(struct ospf_interface *oi) |
718e3744 | 442 | { |
d62a17ae | 443 | /* set output fifo queue. */ |
444 | if (oi->obuf == NULL) | |
445 | oi->obuf = ospf_fifo_new(); | |
718e3744 | 446 | } |
447 | ||
d62a17ae | 448 | void ospf_if_stream_unset(struct ospf_interface *oi) |
718e3744 | 449 | { |
d62a17ae | 450 | struct ospf *ospf = oi->ospf; |
451 | ||
452 | if (oi->obuf) { | |
453 | ospf_fifo_free(oi->obuf); | |
454 | oi->obuf = NULL; | |
455 | ||
456 | if (oi->on_write_q) { | |
457 | listnode_delete(ospf->oi_write_q, oi); | |
458 | if (list_isempty(ospf->oi_write_q)) | |
459 | OSPF_TIMER_OFF(ospf->t_write); | |
460 | oi->on_write_q = 0; | |
461 | } | |
462 | } | |
718e3744 | 463 | } |
68980084 | 464 | |
6b0655a2 | 465 | |
d62a17ae | 466 | static struct ospf_if_params *ospf_new_if_params(void) |
718e3744 | 467 | { |
d62a17ae | 468 | struct ospf_if_params *oip; |
469 | ||
470 | oip = XCALLOC(MTYPE_OSPF_IF_PARAMS, sizeof(struct ospf_if_params)); | |
471 | ||
472 | if (!oip) | |
473 | return NULL; | |
474 | ||
475 | UNSET_IF_PARAM(oip, output_cost_cmd); | |
476 | UNSET_IF_PARAM(oip, transmit_delay); | |
477 | UNSET_IF_PARAM(oip, retransmit_interval); | |
478 | UNSET_IF_PARAM(oip, passive_interface); | |
479 | UNSET_IF_PARAM(oip, v_hello); | |
480 | UNSET_IF_PARAM(oip, fast_hello); | |
481 | UNSET_IF_PARAM(oip, v_wait); | |
482 | UNSET_IF_PARAM(oip, priority); | |
483 | UNSET_IF_PARAM(oip, type); | |
484 | UNSET_IF_PARAM(oip, auth_simple); | |
485 | UNSET_IF_PARAM(oip, auth_crypt); | |
486 | UNSET_IF_PARAM(oip, auth_type); | |
487 | ||
488 | oip->auth_crypt = list_new(); | |
489 | ||
490 | oip->network_lsa_seqnum = htonl(OSPF_INITIAL_SEQUENCE_NUMBER); | |
491 | ||
492 | return oip; | |
718e3744 | 493 | } |
494 | ||
d62a17ae | 495 | void ospf_del_if_params(struct ospf_if_params *oip) |
718e3744 | 496 | { |
d62a17ae | 497 | list_delete(oip->auth_crypt); |
498 | bfd_info_free(&(oip->bfd_info)); | |
499 | XFREE(MTYPE_OSPF_IF_PARAMS, oip); | |
718e3744 | 500 | } |
501 | ||
d62a17ae | 502 | void ospf_free_if_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 503 | { |
d62a17ae | 504 | struct ospf_if_params *oip; |
505 | struct prefix_ipv4 p; | |
506 | struct route_node *rn; | |
507 | ||
508 | p.family = AF_INET; | |
509 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
510 | p.prefix = addr; | |
511 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
512 | if (!rn || !rn->info) | |
513 | return; | |
514 | ||
515 | oip = rn->info; | |
516 | route_unlock_node(rn); | |
517 | ||
518 | if (!OSPF_IF_PARAM_CONFIGURED(oip, output_cost_cmd) | |
519 | && !OSPF_IF_PARAM_CONFIGURED(oip, transmit_delay) | |
520 | && !OSPF_IF_PARAM_CONFIGURED(oip, retransmit_interval) | |
521 | && !OSPF_IF_PARAM_CONFIGURED(oip, passive_interface) | |
522 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_hello) | |
523 | && !OSPF_IF_PARAM_CONFIGURED(oip, fast_hello) | |
524 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_wait) | |
525 | && !OSPF_IF_PARAM_CONFIGURED(oip, priority) | |
526 | && !OSPF_IF_PARAM_CONFIGURED(oip, type) | |
527 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_simple) | |
528 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_type) | |
529 | && listcount(oip->auth_crypt) == 0 | |
530 | && ntohl(oip->network_lsa_seqnum) != OSPF_INITIAL_SEQUENCE_NUMBER) { | |
531 | ospf_del_if_params(oip); | |
532 | rn->info = NULL; | |
533 | route_unlock_node(rn); | |
534 | } | |
718e3744 | 535 | } |
536 | ||
d62a17ae | 537 | struct ospf_if_params *ospf_lookup_if_params(struct interface *ifp, |
538 | struct in_addr addr) | |
718e3744 | 539 | { |
d62a17ae | 540 | struct prefix_ipv4 p; |
541 | struct route_node *rn; | |
542 | ||
543 | p.family = AF_INET; | |
544 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
545 | p.prefix = addr; | |
546 | ||
547 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
548 | ||
549 | if (rn) { | |
550 | route_unlock_node(rn); | |
551 | return rn->info; | |
552 | } | |
553 | ||
554 | return NULL; | |
718e3744 | 555 | } |
556 | ||
d62a17ae | 557 | struct ospf_if_params *ospf_get_if_params(struct interface *ifp, |
558 | struct in_addr addr) | |
718e3744 | 559 | { |
d62a17ae | 560 | struct prefix_ipv4 p; |
561 | struct route_node *rn; | |
562 | ||
563 | p.family = AF_INET; | |
564 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
565 | p.prefix = addr; | |
a6435618 | 566 | apply_mask_ipv4(&p); |
d62a17ae | 567 | |
568 | rn = route_node_get(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
569 | ||
570 | if (rn->info == NULL) | |
571 | rn->info = ospf_new_if_params(); | |
572 | else | |
573 | route_unlock_node(rn); | |
574 | ||
575 | return rn->info; | |
718e3744 | 576 | } |
577 | ||
d62a17ae | 578 | void ospf_if_update_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 579 | { |
d62a17ae | 580 | struct route_node *rn; |
581 | struct ospf_interface *oi; | |
582 | ||
583 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
584 | if ((oi = rn->info) == NULL) | |
585 | continue; | |
586 | ||
587 | if (IPV4_ADDR_SAME(&oi->address->u.prefix4, &addr)) | |
588 | oi->params = ospf_lookup_if_params( | |
589 | ifp, oi->address->u.prefix4); | |
590 | } | |
718e3744 | 591 | } |
592 | ||
d62a17ae | 593 | int ospf_if_new_hook(struct interface *ifp) |
718e3744 | 594 | { |
d62a17ae | 595 | int rc = 0; |
596 | ||
597 | ifp->info = XCALLOC(MTYPE_OSPF_IF_INFO, sizeof(struct ospf_if_info)); | |
598 | ||
599 | IF_OIFS(ifp) = route_table_init(); | |
600 | IF_OIFS_PARAMS(ifp) = route_table_init(); | |
601 | ||
602 | IF_DEF_PARAMS(ifp) = ospf_new_if_params(); | |
603 | ||
604 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), transmit_delay); | |
605 | IF_DEF_PARAMS(ifp)->transmit_delay = OSPF_TRANSMIT_DELAY_DEFAULT; | |
606 | ||
607 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), retransmit_interval); | |
608 | IF_DEF_PARAMS(ifp)->retransmit_interval = | |
609 | OSPF_RETRANSMIT_INTERVAL_DEFAULT; | |
610 | ||
611 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), priority); | |
612 | IF_DEF_PARAMS(ifp)->priority = OSPF_ROUTER_PRIORITY_DEFAULT; | |
613 | ||
614 | IF_DEF_PARAMS(ifp)->mtu_ignore = OSPF_MTU_IGNORE_DEFAULT; | |
615 | ||
616 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_hello); | |
617 | IF_DEF_PARAMS(ifp)->v_hello = OSPF_HELLO_INTERVAL_DEFAULT; | |
618 | ||
619 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), fast_hello); | |
620 | IF_DEF_PARAMS(ifp)->fast_hello = OSPF_FAST_HELLO_DEFAULT; | |
621 | ||
622 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_wait); | |
623 | IF_DEF_PARAMS(ifp)->v_wait = OSPF_ROUTER_DEAD_INTERVAL_DEFAULT; | |
624 | ||
625 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_simple); | |
626 | memset(IF_DEF_PARAMS(ifp)->auth_simple, 0, OSPF_AUTH_SIMPLE_SIZE); | |
627 | ||
628 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_type); | |
629 | IF_DEF_PARAMS(ifp)->auth_type = OSPF_AUTH_NOTSET; | |
630 | ||
631 | rc = ospf_opaque_new_if(ifp); | |
632 | return rc; | |
718e3744 | 633 | } |
634 | ||
d62a17ae | 635 | static int ospf_if_delete_hook(struct interface *ifp) |
718e3744 | 636 | { |
d62a17ae | 637 | int rc = 0; |
638 | struct route_node *rn; | |
639 | rc = ospf_opaque_del_if(ifp); | |
940b01aa | 640 | |
d62a17ae | 641 | route_table_finish(IF_OIFS(ifp)); |
940b01aa | 642 | |
d62a17ae | 643 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) |
644 | if (rn->info) | |
645 | ospf_del_if_params(rn->info); | |
646 | route_table_finish(IF_OIFS_PARAMS(ifp)); | |
940b01aa | 647 | |
d62a17ae | 648 | ospf_del_if_params((struct ospf_if_params *)IF_DEF_PARAMS(ifp)); |
649 | XFREE(MTYPE_OSPF_IF_INFO, ifp->info); | |
650 | ifp->info = NULL; | |
718e3744 | 651 | |
d62a17ae | 652 | return rc; |
718e3744 | 653 | } |
654 | ||
d62a17ae | 655 | int ospf_if_is_enable(struct ospf_interface *oi) |
718e3744 | 656 | { |
d62a17ae | 657 | if (!if_is_loopback(oi->ifp)) |
658 | if (if_is_up(oi->ifp)) | |
659 | return 1; | |
718e3744 | 660 | |
d62a17ae | 661 | return 0; |
718e3744 | 662 | } |
663 | ||
d62a17ae | 664 | void ospf_if_set_multicast(struct ospf_interface *oi) |
ba6454ec | 665 | { |
d62a17ae | 666 | if ((oi->state > ISM_Loopback) && (oi->type != OSPF_IFTYPE_LOOPBACK) |
667 | && (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
668 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
669 | /* The interface should belong to the OSPF-all-routers group. */ | |
670 | if (!OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS) | |
671 | && (ospf_if_add_allspfrouters(oi->ospf, oi->address, | |
672 | oi->ifp->ifindex) | |
673 | >= 0)) | |
674 | /* Set the flag only if the system call to join | |
675 | * succeeded. */ | |
676 | OI_MEMBER_JOINED(oi, MEMBER_ALLROUTERS); | |
677 | } else { | |
678 | /* The interface should NOT belong to the OSPF-all-routers | |
679 | * group. */ | |
680 | if (OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS)) { | |
681 | /* Only actually drop if this is the last reference */ | |
682 | if (OI_MEMBER_COUNT(oi, MEMBER_ALLROUTERS) == 1) | |
683 | ospf_if_drop_allspfrouters(oi->ospf, | |
684 | oi->address, | |
685 | oi->ifp->ifindex); | |
686 | /* Unset the flag regardless of whether the system call | |
687 | to leave | |
688 | the group succeeded, since it's much safer to assume | |
689 | that | |
690 | we are not a member. */ | |
691 | OI_MEMBER_LEFT(oi, MEMBER_ALLROUTERS); | |
692 | } | |
693 | } | |
694 | ||
695 | if (((oi->type == OSPF_IFTYPE_BROADCAST) | |
696 | || (oi->type == OSPF_IFTYPE_POINTOPOINT)) | |
697 | && ((oi->state == ISM_DR) || (oi->state == ISM_Backup)) | |
698 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
699 | /* The interface should belong to the OSPF-designated-routers | |
700 | * group. */ | |
701 | if (!OI_MEMBER_CHECK(oi, MEMBER_DROUTERS) | |
702 | && (ospf_if_add_alldrouters(oi->ospf, oi->address, | |
703 | oi->ifp->ifindex) | |
704 | >= 0)) | |
705 | /* Set the flag only if the system call to join | |
706 | * succeeded. */ | |
707 | OI_MEMBER_JOINED(oi, MEMBER_DROUTERS); | |
708 | } else { | |
709 | /* The interface should NOT belong to the | |
710 | * OSPF-designated-routers group */ | |
711 | if (OI_MEMBER_CHECK(oi, MEMBER_DROUTERS)) { | |
712 | /* drop only if last reference */ | |
713 | if (OI_MEMBER_COUNT(oi, MEMBER_DROUTERS) == 1) | |
714 | ospf_if_drop_alldrouters(oi->ospf, oi->address, | |
715 | oi->ifp->ifindex); | |
716 | ||
717 | /* Unset the flag regardless of whether the system call | |
718 | to leave | |
719 | the group succeeded, since it's much safer to assume | |
720 | that | |
721 | we are not a member. */ | |
722 | OI_MEMBER_LEFT(oi, MEMBER_DROUTERS); | |
723 | } | |
724 | } | |
ba6454ec | 725 | } |
726 | ||
d62a17ae | 727 | int ospf_if_up(struct ospf_interface *oi) |
718e3744 | 728 | { |
d62a17ae | 729 | if (oi == NULL) |
730 | return 0; | |
731 | ||
732 | if (oi->type == OSPF_IFTYPE_LOOPBACK) | |
733 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_LoopInd); | |
734 | else { | |
735 | ospf_if_stream_set(oi); | |
736 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_InterfaceUp); | |
737 | } | |
738 | ||
739 | return 1; | |
718e3744 | 740 | } |
741 | ||
d62a17ae | 742 | int ospf_if_down(struct ospf_interface *oi) |
718e3744 | 743 | { |
d62a17ae | 744 | if (oi == NULL) |
745 | return 0; | |
718e3744 | 746 | |
d62a17ae | 747 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); |
748 | /* delete position in router LSA */ | |
749 | oi->lsa_pos_beg = 0; | |
750 | oi->lsa_pos_end = 0; | |
751 | /* Shutdown packet reception and sending */ | |
752 | ospf_if_stream_unset(oi); | |
718e3744 | 753 | |
d62a17ae | 754 | return 1; |
718e3744 | 755 | } |
756 | ||
6b0655a2 | 757 | |
718e3744 | 758 | /* Virtual Link related functions. */ |
759 | ||
d62a17ae | 760 | struct ospf_vl_data *ospf_vl_data_new(struct ospf_area *area, |
761 | struct in_addr vl_peer) | |
718e3744 | 762 | { |
d62a17ae | 763 | struct ospf_vl_data *vl_data; |
718e3744 | 764 | |
d62a17ae | 765 | vl_data = XCALLOC(MTYPE_OSPF_VL_DATA, sizeof(struct ospf_vl_data)); |
718e3744 | 766 | |
d62a17ae | 767 | vl_data->vl_peer.s_addr = vl_peer.s_addr; |
768 | vl_data->vl_area_id = area->area_id; | |
769 | vl_data->vl_area_id_fmt = area->area_id_fmt; | |
718e3744 | 770 | |
d62a17ae | 771 | return vl_data; |
718e3744 | 772 | } |
773 | ||
d62a17ae | 774 | void ospf_vl_data_free(struct ospf_vl_data *vl_data) |
718e3744 | 775 | { |
d62a17ae | 776 | XFREE(MTYPE_OSPF_VL_DATA, vl_data); |
718e3744 | 777 | } |
778 | ||
779 | u_int vlink_count = 0; | |
780 | ||
d62a17ae | 781 | struct ospf_interface *ospf_vl_new(struct ospf *ospf, |
782 | struct ospf_vl_data *vl_data) | |
718e3744 | 783 | { |
d62a17ae | 784 | struct ospf_interface *voi; |
785 | struct interface *vi; | |
786 | char ifname[INTERFACE_NAMSIZ + 1]; | |
787 | struct ospf_area *area; | |
788 | struct in_addr area_id; | |
789 | struct connected *co; | |
790 | struct prefix_ipv4 *p; | |
791 | ||
792 | if (IS_DEBUG_OSPF_EVENT) | |
793 | zlog_debug("ospf_vl_new(): Start"); | |
794 | if (vlink_count == OSPF_VL_MAX_COUNT) { | |
795 | if (IS_DEBUG_OSPF_EVENT) | |
796 | zlog_debug( | |
797 | "ospf_vl_new(): Alarm: " | |
798 | "cannot create more than OSPF_MAX_VL_COUNT virtual links"); | |
799 | return NULL; | |
800 | } | |
801 | ||
802 | if (IS_DEBUG_OSPF_EVENT) | |
803 | zlog_debug("ospf_vl_new(): creating pseudo zebra interface"); | |
804 | ||
805 | snprintf(ifname, sizeof(ifname), "VLINK%d", vlink_count); | |
806 | vi = if_create(ifname, strnlen(ifname, sizeof(ifname)), VRF_DEFAULT); | |
807 | /* | |
808 | * if_create sets ZEBRA_INTERFACE_LINKDETECTION | |
809 | * virtual links don't need this. | |
810 | */ | |
811 | UNSET_FLAG(vi->status, ZEBRA_INTERFACE_LINKDETECTION); | |
812 | co = connected_new(); | |
813 | co->ifp = vi; | |
814 | listnode_add(vi->connected, co); | |
815 | ||
816 | p = prefix_ipv4_new(); | |
817 | p->family = AF_INET; | |
818 | p->prefix.s_addr = 0; | |
819 | p->prefixlen = 0; | |
820 | ||
821 | co->address = (struct prefix *)p; | |
822 | ||
823 | voi = ospf_if_new(ospf, vi, co->address); | |
824 | if (voi == NULL) { | |
825 | if (IS_DEBUG_OSPF_EVENT) | |
826 | zlog_debug( | |
827 | "ospf_vl_new(): Alarm: OSPF int structure is not created"); | |
828 | return NULL; | |
829 | } | |
830 | voi->connected = co; | |
831 | voi->vl_data = vl_data; | |
832 | voi->ifp->mtu = OSPF_VL_MTU; | |
833 | voi->type = OSPF_IFTYPE_VIRTUALLINK; | |
834 | ||
835 | vlink_count++; | |
836 | if (IS_DEBUG_OSPF_EVENT) | |
837 | zlog_debug("ospf_vl_new(): Created name: %s", ifname); | |
838 | if (IS_DEBUG_OSPF_EVENT) | |
839 | zlog_debug("ospf_vl_new(): set if->name to %s", vi->name); | |
840 | ||
841 | area_id.s_addr = 0; | |
842 | area = ospf_area_get(ospf, area_id); | |
843 | voi->area = area; | |
844 | ||
845 | if (IS_DEBUG_OSPF_EVENT) | |
846 | zlog_debug( | |
847 | "ospf_vl_new(): set associated area to the backbone"); | |
848 | ||
849 | /* Add pseudo neighbor. */ | |
850 | ospf_nbr_self_reset(voi, voi->ospf->router_id); | |
851 | ||
852 | ospf_area_add_if(voi->area, voi); | |
853 | ||
854 | ospf_if_stream_set(voi); | |
855 | ||
856 | if (IS_DEBUG_OSPF_EVENT) | |
857 | zlog_debug("ospf_vl_new(): Stop"); | |
858 | return voi; | |
718e3744 | 859 | } |
860 | ||
d62a17ae | 861 | static void ospf_vl_if_delete(struct ospf_vl_data *vl_data) |
718e3744 | 862 | { |
d62a17ae | 863 | struct interface *ifp = vl_data->vl_oi->ifp; |
864 | vl_data->vl_oi->address->u.prefix4.s_addr = 0; | |
865 | vl_data->vl_oi->address->prefixlen = 0; | |
866 | ospf_if_free(vl_data->vl_oi); | |
867 | if_delete(ifp); | |
868 | vlink_count--; | |
718e3744 | 869 | } |
870 | ||
9c27ef9b PJ |
871 | /* Look up vl_data for given peer, optionally qualified to be in the |
872 | * specified area. NULL area returns first found.. | |
873 | */ | |
d62a17ae | 874 | struct ospf_vl_data *ospf_vl_lookup(struct ospf *ospf, struct ospf_area *area, |
875 | struct in_addr vl_peer) | |
718e3744 | 876 | { |
d62a17ae | 877 | struct ospf_vl_data *vl_data; |
878 | struct listnode *node; | |
879 | ||
880 | if (IS_DEBUG_OSPF_EVENT) { | |
881 | zlog_debug("%s: Looking for %s", __func__, inet_ntoa(vl_peer)); | |
882 | if (area) | |
883 | zlog_debug("%s: in area %s", __func__, | |
884 | inet_ntoa(area->area_id)); | |
885 | } | |
886 | ||
887 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
888 | if (IS_DEBUG_OSPF_EVENT) | |
889 | zlog_debug("%s: VL %s, peer %s", __func__, | |
890 | vl_data->vl_oi->ifp->name, | |
891 | inet_ntoa(vl_data->vl_peer)); | |
892 | ||
893 | if (area | |
894 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
895 | continue; | |
896 | ||
897 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &vl_peer)) | |
898 | return vl_data; | |
899 | } | |
900 | ||
901 | return NULL; | |
718e3744 | 902 | } |
903 | ||
d62a17ae | 904 | static void ospf_vl_shutdown(struct ospf_vl_data *vl_data) |
718e3744 | 905 | { |
d62a17ae | 906 | struct ospf_interface *oi; |
718e3744 | 907 | |
d62a17ae | 908 | if ((oi = vl_data->vl_oi) == NULL) |
909 | return; | |
718e3744 | 910 | |
d62a17ae | 911 | oi->address->u.prefix4.s_addr = 0; |
912 | oi->address->prefixlen = 0; | |
718e3744 | 913 | |
d62a17ae | 914 | UNSET_FLAG(oi->ifp->flags, IFF_UP); |
915 | /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */ | |
916 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); | |
718e3744 | 917 | } |
918 | ||
d62a17ae | 919 | void ospf_vl_add(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 920 | { |
d62a17ae | 921 | listnode_add(ospf->vlinks, vl_data); |
922 | hook_call(ospf_vl_add, vl_data); | |
718e3744 | 923 | } |
924 | ||
d62a17ae | 925 | void ospf_vl_delete(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 926 | { |
d62a17ae | 927 | ospf_vl_shutdown(vl_data); |
928 | ospf_vl_if_delete(vl_data); | |
718e3744 | 929 | |
d62a17ae | 930 | hook_call(ospf_vl_delete, vl_data); |
931 | listnode_delete(ospf->vlinks, vl_data); | |
718e3744 | 932 | |
d62a17ae | 933 | ospf_vl_data_free(vl_data); |
718e3744 | 934 | } |
935 | ||
d62a17ae | 936 | static int ospf_vl_set_params(struct ospf_vl_data *vl_data, struct vertex *v) |
718e3744 | 937 | { |
d62a17ae | 938 | int changed = 0; |
939 | struct ospf_interface *voi; | |
940 | struct listnode *node; | |
941 | struct vertex_parent *vp = NULL; | |
942 | unsigned int i; | |
943 | struct router_lsa *rl; | |
944 | ||
945 | voi = vl_data->vl_oi; | |
946 | ||
947 | if (voi->output_cost != v->distance) { | |
948 | ||
949 | voi->output_cost = v->distance; | |
950 | changed = 1; | |
951 | } | |
952 | ||
953 | for (ALL_LIST_ELEMENTS_RO(v->parents, node, vp)) { | |
954 | vl_data->nexthop.oi = vp->nexthop->oi; | |
955 | vl_data->nexthop.router = vp->nexthop->router; | |
956 | ||
957 | if (!IPV4_ADDR_SAME(&voi->address->u.prefix4, | |
958 | &vl_data->nexthop.oi->address->u.prefix4)) | |
959 | changed = 1; | |
960 | ||
961 | voi->address->u.prefix4 = | |
962 | vl_data->nexthop.oi->address->u.prefix4; | |
963 | voi->address->prefixlen = | |
964 | vl_data->nexthop.oi->address->prefixlen; | |
965 | ||
966 | break; /* We take the first interface. */ | |
967 | } | |
968 | ||
969 | rl = (struct router_lsa *)v->lsa; | |
970 | ||
971 | /* use SPF determined backlink index in struct vertex | |
972 | * for virtual link destination address | |
973 | */ | |
974 | if (vp && vp->backlink >= 0) { | |
975 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
976 | &rl->link[vp->backlink].link_data)) | |
977 | changed = 1; | |
978 | vl_data->peer_addr = rl->link[vp->backlink].link_data; | |
979 | } else { | |
980 | /* This is highly odd, there is no backlink index | |
981 | * there should be due to the ospf_spf_has_link() check | |
982 | * in SPF. Lets warn and try pick a link anyway. | |
983 | */ | |
984 | zlog_warn("ospf_vl_set_params: No backlink for %s!", | |
985 | vl_data->vl_oi->ifp->name); | |
986 | for (i = 0; i < ntohs(rl->links); i++) { | |
987 | switch (rl->link[i].type) { | |
988 | case LSA_LINK_TYPE_VIRTUALLINK: | |
989 | if (IS_DEBUG_OSPF_EVENT) | |
990 | zlog_debug( | |
991 | "found back link through VL"); | |
992 | /* fallthru */ | |
993 | case LSA_LINK_TYPE_TRANSIT: | |
994 | case LSA_LINK_TYPE_POINTOPOINT: | |
995 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
996 | &rl->link[i].link_data)) | |
997 | changed = 1; | |
998 | vl_data->peer_addr = rl->link[i].link_data; | |
999 | } | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | if (IS_DEBUG_OSPF_EVENT) | |
1004 | zlog_debug("%s: %s peer address: %s, cost: %d,%schanged", | |
1005 | __func__, vl_data->vl_oi->ifp->name, | |
1006 | inet_ntoa(vl_data->peer_addr), voi->output_cost, | |
1007 | (changed ? " " : " un")); | |
1008 | ||
1009 | return changed; | |
718e3744 | 1010 | } |
1011 | ||
1012 | ||
d62a17ae | 1013 | void ospf_vl_up_check(struct ospf_area *area, struct in_addr rid, |
1014 | struct vertex *v) | |
718e3744 | 1015 | { |
d62a17ae | 1016 | struct ospf *ospf = area->ospf; |
1017 | struct listnode *node; | |
1018 | struct ospf_vl_data *vl_data; | |
1019 | struct ospf_interface *oi; | |
1020 | ||
1021 | if (IS_DEBUG_OSPF_EVENT) { | |
1022 | zlog_debug("ospf_vl_up_check(): Start"); | |
1023 | zlog_debug("ospf_vl_up_check(): Router ID is %s", | |
1024 | inet_ntoa(rid)); | |
1025 | zlog_debug("ospf_vl_up_check(): Area is %s", | |
1026 | inet_ntoa(area->area_id)); | |
718e3744 | 1027 | } |
1028 | ||
d62a17ae | 1029 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { |
1030 | if (IS_DEBUG_OSPF_EVENT) { | |
1031 | zlog_debug("%s: considering VL, %s in area %s", | |
1032 | __func__, vl_data->vl_oi->ifp->name, | |
1033 | inet_ntoa(vl_data->vl_area_id)); | |
1034 | zlog_debug("%s: peer ID: %s", __func__, | |
1035 | inet_ntoa(vl_data->vl_peer)); | |
1036 | } | |
1037 | ||
1038 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &rid) | |
1039 | && IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) { | |
1040 | oi = vl_data->vl_oi; | |
1041 | SET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1042 | ||
1043 | if (IS_DEBUG_OSPF_EVENT) | |
1044 | zlog_debug( | |
1045 | "ospf_vl_up_check(): this VL matched"); | |
1046 | ||
1047 | if (oi->state == ISM_Down) { | |
1048 | if (IS_DEBUG_OSPF_EVENT) | |
1049 | zlog_debug( | |
1050 | "ospf_vl_up_check(): VL is down, waking it up"); | |
1051 | SET_FLAG(oi->ifp->flags, IFF_UP); | |
1052 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceUp); | |
1053 | } | |
1054 | ||
1055 | if (ospf_vl_set_params(vl_data, v)) { | |
1056 | if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1057 | zlog_debug( | |
1058 | "ospf_vl_up_check: VL cost change," | |
1059 | " scheduling router lsa refresh"); | |
1060 | if (ospf->backbone) | |
1061 | ospf_router_lsa_update_area( | |
1062 | ospf->backbone); | |
1063 | else if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1064 | zlog_debug( | |
1065 | "ospf_vl_up_check: VL cost change, no backbone!"); | |
1066 | } | |
1067 | } | |
1068 | } | |
718e3744 | 1069 | } |
1070 | ||
d62a17ae | 1071 | void ospf_vl_unapprove(struct ospf *ospf) |
718e3744 | 1072 | { |
d62a17ae | 1073 | struct listnode *node; |
1074 | struct ospf_vl_data *vl_data; | |
718e3744 | 1075 | |
d62a17ae | 1076 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) |
1077 | UNSET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
718e3744 | 1078 | } |
1079 | ||
d62a17ae | 1080 | void ospf_vl_shut_unapproved(struct ospf *ospf) |
718e3744 | 1081 | { |
d62a17ae | 1082 | struct listnode *node, *nnode; |
1083 | struct ospf_vl_data *vl_data; | |
718e3744 | 1084 | |
d62a17ae | 1085 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) |
1086 | if (!CHECK_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED)) | |
1087 | ospf_vl_shutdown(vl_data); | |
718e3744 | 1088 | } |
1089 | ||
d62a17ae | 1090 | int ospf_full_virtual_nbrs(struct ospf_area *area) |
718e3744 | 1091 | { |
d62a17ae | 1092 | if (IS_DEBUG_OSPF_EVENT) { |
1093 | zlog_debug( | |
1094 | "counting fully adjacent virtual neighbors in area %s", | |
1095 | inet_ntoa(area->area_id)); | |
1096 | zlog_debug("there are %d of them", area->full_vls); | |
1097 | } | |
1098 | ||
1099 | return area->full_vls; | |
718e3744 | 1100 | } |
1101 | ||
d62a17ae | 1102 | int ospf_vls_in_area(struct ospf_area *area) |
718e3744 | 1103 | { |
d62a17ae | 1104 | struct listnode *node; |
1105 | struct ospf_vl_data *vl_data; | |
1106 | int c = 0; | |
718e3744 | 1107 | |
d62a17ae | 1108 | for (ALL_LIST_ELEMENTS_RO(area->ospf->vlinks, node, vl_data)) |
1109 | if (IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1110 | c++; | |
718e3744 | 1111 | |
d62a17ae | 1112 | return c; |
718e3744 | 1113 | } |
1114 | ||
6b0655a2 | 1115 | |
d62a17ae | 1116 | struct crypt_key *ospf_crypt_key_new() |
718e3744 | 1117 | { |
d62a17ae | 1118 | return XCALLOC(MTYPE_OSPF_CRYPT_KEY, sizeof(struct crypt_key)); |
718e3744 | 1119 | } |
1120 | ||
d62a17ae | 1121 | void ospf_crypt_key_add(struct list *crypt, struct crypt_key *ck) |
718e3744 | 1122 | { |
d62a17ae | 1123 | listnode_add(crypt, ck); |
718e3744 | 1124 | } |
1125 | ||
d62a17ae | 1126 | struct crypt_key *ospf_crypt_key_lookup(struct list *auth_crypt, u_char key_id) |
718e3744 | 1127 | { |
d62a17ae | 1128 | struct listnode *node; |
1129 | struct crypt_key *ck; | |
718e3744 | 1130 | |
d62a17ae | 1131 | for (ALL_LIST_ELEMENTS_RO(auth_crypt, node, ck)) |
1132 | if (ck->key_id == key_id) | |
1133 | return ck; | |
718e3744 | 1134 | |
d62a17ae | 1135 | return NULL; |
718e3744 | 1136 | } |
1137 | ||
d62a17ae | 1138 | int ospf_crypt_key_delete(struct list *auth_crypt, u_char key_id) |
718e3744 | 1139 | { |
d62a17ae | 1140 | struct listnode *node, *nnode; |
1141 | struct crypt_key *ck; | |
1142 | ||
1143 | for (ALL_LIST_ELEMENTS(auth_crypt, node, nnode, ck)) { | |
1144 | if (ck->key_id == key_id) { | |
1145 | listnode_delete(auth_crypt, ck); | |
1146 | XFREE(MTYPE_OSPF_CRYPT_KEY, ck); | |
1147 | return 1; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | return 0; | |
718e3744 | 1152 | } |
1153 | ||
d62a17ae | 1154 | u_char ospf_default_iftype(struct interface *ifp) |
bc18d616 | 1155 | { |
d62a17ae | 1156 | if (if_is_pointopoint(ifp)) |
1157 | return OSPF_IFTYPE_POINTOPOINT; | |
1158 | else if (if_is_loopback(ifp)) | |
1159 | return OSPF_IFTYPE_LOOPBACK; | |
1160 | else | |
1161 | return OSPF_IFTYPE_BROADCAST; | |
bc18d616 | 1162 | } |
1163 | ||
d62a17ae | 1164 | void ospf_if_init() |
718e3744 | 1165 | { |
d62a17ae | 1166 | /* Initialize Zebra interface data structure. */ |
1167 | om->iflist = vrf_iflist(VRF_DEFAULT); | |
ce19a04a DL |
1168 | hook_register_prio(if_add, 0, ospf_if_new_hook); |
1169 | hook_register_prio(if_del, 0, ospf_if_delete_hook); | |
718e3744 | 1170 | } |