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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 | ||
b5a8894d CS |
246 | if (IS_DEBUG_OSPF_EVENT) |
247 | zlog_debug("%s: ospf interface %s vrf %s id %u created", | |
248 | __PRETTY_FUNCTION__, ifp->name, | |
249 | ospf_vrf_id_to_name(ospf->vrf_id), ospf->vrf_id); | |
250 | ||
d62a17ae | 251 | return oi; |
718e3744 | 252 | } |
253 | ||
254 | /* Restore an interface to its pre UP state | |
255 | Used from ism_interface_down only */ | |
d62a17ae | 256 | void ospf_if_cleanup(struct ospf_interface *oi) |
718e3744 | 257 | { |
d62a17ae | 258 | struct route_node *rn; |
259 | struct listnode *node, *nnode; | |
260 | struct ospf_neighbor *nbr; | |
261 | struct ospf_nbr_nbma *nbr_nbma; | |
262 | struct ospf_lsa *lsa; | |
263 | ||
264 | /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */ | |
265 | /* delete all static neighbors attached to this interface */ | |
266 | for (ALL_LIST_ELEMENTS(oi->nbr_nbma, node, nnode, nbr_nbma)) { | |
267 | OSPF_POLL_TIMER_OFF(nbr_nbma->t_poll); | |
268 | ||
269 | if (nbr_nbma->nbr) { | |
270 | nbr_nbma->nbr->nbr_nbma = NULL; | |
271 | nbr_nbma->nbr = NULL; | |
272 | } | |
273 | ||
274 | nbr_nbma->oi = NULL; | |
275 | ||
276 | listnode_delete(oi->nbr_nbma, nbr_nbma); | |
718e3744 | 277 | } |
278 | ||
d62a17ae | 279 | /* send Neighbor event KillNbr to all associated neighbors. */ |
280 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) | |
281 | if ((nbr = rn->info) != NULL) | |
282 | if (nbr != oi->nbr_self) | |
283 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
284 | ||
285 | /* Cleanup Link State Acknowlegdment list. */ | |
286 | for (ALL_LIST_ELEMENTS(oi->ls_ack, node, nnode, lsa)) | |
287 | ospf_lsa_unlock(&lsa); /* oi->ls_ack */ | |
288 | list_delete_all_node(oi->ls_ack); | |
289 | ||
290 | oi->crypt_seqnum = 0; | |
291 | ||
292 | /* Empty link state update queue */ | |
293 | ospf_ls_upd_queue_empty(oi); | |
294 | ||
295 | /* Reset pseudo neighbor. */ | |
296 | ospf_nbr_self_reset(oi, oi->ospf->router_id); | |
718e3744 | 297 | } |
298 | ||
d62a17ae | 299 | void ospf_if_free(struct ospf_interface *oi) |
718e3744 | 300 | { |
d62a17ae | 301 | ospf_if_down(oi); |
302 | ||
303 | assert(oi->state == ISM_Down); | |
304 | ||
305 | ospf_opaque_type9_lsa_term(oi); | |
306 | ||
307 | QOBJ_UNREG(oi); | |
308 | ||
309 | /* Free Pseudo Neighbour */ | |
310 | ospf_nbr_delete(oi->nbr_self); | |
718e3744 | 311 | |
d62a17ae | 312 | route_table_finish(oi->nbrs); |
313 | route_table_finish(oi->ls_upd_queue); | |
718e3744 | 314 | |
d62a17ae | 315 | /* Free any lists that should be freed */ |
acdf5e25 | 316 | list_delete_and_null(&oi->nbr_nbma); |
718e3744 | 317 | |
acdf5e25 DS |
318 | list_delete_and_null(&oi->ls_ack); |
319 | list_delete_and_null(&oi->ls_ack_direct.ls_ack); | |
ae19c240 | 320 | |
b5a8894d CS |
321 | if (IS_DEBUG_OSPF_EVENT) |
322 | zlog_debug("%s: ospf interface %s vrf %s id %u deleted", | |
323 | __PRETTY_FUNCTION__, oi->ifp->name, | |
324 | ospf_vrf_id_to_name(oi->ifp->vrf_id), | |
325 | oi->ifp->vrf_id); | |
326 | ||
d62a17ae | 327 | ospf_delete_from_if(oi->ifp, oi); |
718e3744 | 328 | |
d62a17ae | 329 | listnode_delete(oi->ospf->oiflist, oi); |
330 | listnode_delete(oi->area->oiflist, oi); | |
718e3744 | 331 | |
d62a17ae | 332 | thread_cancel_event(master, oi); |
cfd670f3 | 333 | |
d62a17ae | 334 | memset(oi, 0, sizeof(*oi)); |
335 | XFREE(MTYPE_OSPF_IF, oi); | |
718e3744 | 336 | } |
337 | ||
d62a17ae | 338 | int ospf_if_is_up(struct ospf_interface *oi) |
718e3744 | 339 | { |
d62a17ae | 340 | return if_is_up(oi->ifp); |
718e3744 | 341 | } |
342 | ||
d62a17ae | 343 | struct ospf_interface *ospf_if_exists(struct ospf_interface *oic) |
344 | { | |
345 | struct listnode *node; | |
346 | struct ospf *ospf; | |
347 | struct ospf_interface *oi; | |
2db3d05d | 348 | |
b5a8894d CS |
349 | if (!oic) |
350 | return NULL; | |
351 | ||
352 | ospf = oic->ospf; | |
353 | if (ospf == NULL) | |
d62a17ae | 354 | return NULL; |
2db3d05d | 355 | |
d62a17ae | 356 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) |
357 | if (oi == oic) | |
358 | return oi; | |
1eb8ef25 | 359 | |
d62a17ae | 360 | return NULL; |
2db3d05d | 361 | } |
362 | ||
c81ee5c9 | 363 | /* Lookup OSPF interface by router LSA posistion */ |
d62a17ae | 364 | struct ospf_interface *ospf_if_lookup_by_lsa_pos(struct ospf_area *area, |
365 | int lsa_pos) | |
c81ee5c9 | 366 | { |
d62a17ae | 367 | struct listnode *node; |
368 | struct ospf_interface *oi; | |
c81ee5c9 | 369 | |
d62a17ae | 370 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) { |
371 | if (lsa_pos >= oi->lsa_pos_beg && lsa_pos < oi->lsa_pos_end) | |
372 | return oi; | |
373 | } | |
374 | return NULL; | |
c81ee5c9 JT |
375 | } |
376 | ||
d62a17ae | 377 | struct ospf_interface *ospf_if_lookup_by_local_addr(struct ospf *ospf, |
378 | struct interface *ifp, | |
379 | struct in_addr address) | |
718e3744 | 380 | { |
d62a17ae | 381 | struct listnode *node; |
382 | struct ospf_interface *oi; | |
383 | ||
384 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) | |
385 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
386 | if (ifp && oi->ifp != ifp) | |
387 | continue; | |
388 | ||
389 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
390 | return oi; | |
391 | } | |
392 | ||
393 | return NULL; | |
718e3744 | 394 | } |
395 | ||
d62a17ae | 396 | struct ospf_interface *ospf_if_lookup_by_prefix(struct ospf *ospf, |
397 | struct prefix_ipv4 *p) | |
718e3744 | 398 | { |
d62a17ae | 399 | struct listnode *node; |
400 | struct ospf_interface *oi; | |
401 | ||
402 | /* Check each Interface. */ | |
403 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
404 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
405 | struct prefix ptmp; | |
406 | ||
407 | prefix_copy(&ptmp, CONNECTED_PREFIX(oi->connected)); | |
408 | apply_mask(&ptmp); | |
409 | if (prefix_same(&ptmp, (struct prefix *)p)) | |
410 | return oi; | |
411 | } | |
68980084 | 412 | } |
d62a17ae | 413 | return NULL; |
718e3744 | 414 | } |
415 | ||
05cf46ba | 416 | /* determine receiving interface by ifp and source address */ |
d62a17ae | 417 | struct ospf_interface *ospf_if_lookup_recv_if(struct ospf *ospf, |
418 | struct in_addr src, | |
419 | struct interface *ifp) | |
718e3744 | 420 | { |
d62a17ae | 421 | struct route_node *rn; |
422 | struct prefix_ipv4 addr; | |
423 | struct ospf_interface *oi, *match; | |
424 | ||
425 | addr.family = AF_INET; | |
426 | addr.prefix = src; | |
427 | addr.prefixlen = IPV4_MAX_BITLEN; | |
428 | ||
429 | match = NULL; | |
430 | ||
431 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
432 | oi = rn->info; | |
433 | ||
434 | if (!oi) /* oi can be NULL for PtP aliases */ | |
435 | continue; | |
436 | ||
437 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
438 | continue; | |
439 | ||
440 | if (if_is_loopback(oi->ifp)) | |
441 | continue; | |
442 | ||
443 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
444 | match = oi; | |
445 | else if (prefix_match(CONNECTED_PREFIX(oi->connected), | |
446 | (struct prefix *)&addr)) { | |
9d303b37 DL |
447 | if ((match == NULL) || (match->address->prefixlen |
448 | < oi->address->prefixlen)) | |
d62a17ae | 449 | match = oi; |
450 | } | |
718e3744 | 451 | } |
718e3744 | 452 | |
d62a17ae | 453 | return match; |
718e3744 | 454 | } |
6b0655a2 | 455 | |
d62a17ae | 456 | void ospf_if_stream_set(struct ospf_interface *oi) |
718e3744 | 457 | { |
d62a17ae | 458 | /* set output fifo queue. */ |
459 | if (oi->obuf == NULL) | |
460 | oi->obuf = ospf_fifo_new(); | |
718e3744 | 461 | } |
462 | ||
d62a17ae | 463 | void ospf_if_stream_unset(struct ospf_interface *oi) |
718e3744 | 464 | { |
d62a17ae | 465 | struct ospf *ospf = oi->ospf; |
466 | ||
467 | if (oi->obuf) { | |
468 | ospf_fifo_free(oi->obuf); | |
469 | oi->obuf = NULL; | |
470 | ||
471 | if (oi->on_write_q) { | |
472 | listnode_delete(ospf->oi_write_q, oi); | |
473 | if (list_isempty(ospf->oi_write_q)) | |
474 | OSPF_TIMER_OFF(ospf->t_write); | |
475 | oi->on_write_q = 0; | |
476 | } | |
477 | } | |
718e3744 | 478 | } |
68980084 | 479 | |
6b0655a2 | 480 | |
d62a17ae | 481 | static struct ospf_if_params *ospf_new_if_params(void) |
718e3744 | 482 | { |
d62a17ae | 483 | struct ospf_if_params *oip; |
484 | ||
485 | oip = XCALLOC(MTYPE_OSPF_IF_PARAMS, sizeof(struct ospf_if_params)); | |
486 | ||
487 | if (!oip) | |
488 | return NULL; | |
489 | ||
490 | UNSET_IF_PARAM(oip, output_cost_cmd); | |
491 | UNSET_IF_PARAM(oip, transmit_delay); | |
492 | UNSET_IF_PARAM(oip, retransmit_interval); | |
493 | UNSET_IF_PARAM(oip, passive_interface); | |
494 | UNSET_IF_PARAM(oip, v_hello); | |
495 | UNSET_IF_PARAM(oip, fast_hello); | |
496 | UNSET_IF_PARAM(oip, v_wait); | |
497 | UNSET_IF_PARAM(oip, priority); | |
498 | UNSET_IF_PARAM(oip, type); | |
499 | UNSET_IF_PARAM(oip, auth_simple); | |
500 | UNSET_IF_PARAM(oip, auth_crypt); | |
501 | UNSET_IF_PARAM(oip, auth_type); | |
502 | ||
503 | oip->auth_crypt = list_new(); | |
504 | ||
505 | oip->network_lsa_seqnum = htonl(OSPF_INITIAL_SEQUENCE_NUMBER); | |
506 | ||
507 | return oip; | |
718e3744 | 508 | } |
509 | ||
d62a17ae | 510 | void ospf_del_if_params(struct ospf_if_params *oip) |
718e3744 | 511 | { |
affe9e99 | 512 | list_delete_and_null(&oip->auth_crypt); |
d62a17ae | 513 | bfd_info_free(&(oip->bfd_info)); |
514 | XFREE(MTYPE_OSPF_IF_PARAMS, oip); | |
718e3744 | 515 | } |
516 | ||
d62a17ae | 517 | void ospf_free_if_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 518 | { |
d62a17ae | 519 | struct ospf_if_params *oip; |
520 | struct prefix_ipv4 p; | |
521 | struct route_node *rn; | |
522 | ||
523 | p.family = AF_INET; | |
524 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
525 | p.prefix = addr; | |
526 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
527 | if (!rn || !rn->info) | |
528 | return; | |
529 | ||
530 | oip = rn->info; | |
531 | route_unlock_node(rn); | |
532 | ||
533 | if (!OSPF_IF_PARAM_CONFIGURED(oip, output_cost_cmd) | |
534 | && !OSPF_IF_PARAM_CONFIGURED(oip, transmit_delay) | |
535 | && !OSPF_IF_PARAM_CONFIGURED(oip, retransmit_interval) | |
536 | && !OSPF_IF_PARAM_CONFIGURED(oip, passive_interface) | |
537 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_hello) | |
538 | && !OSPF_IF_PARAM_CONFIGURED(oip, fast_hello) | |
539 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_wait) | |
540 | && !OSPF_IF_PARAM_CONFIGURED(oip, priority) | |
541 | && !OSPF_IF_PARAM_CONFIGURED(oip, type) | |
542 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_simple) | |
543 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_type) | |
544 | && listcount(oip->auth_crypt) == 0 | |
545 | && ntohl(oip->network_lsa_seqnum) != OSPF_INITIAL_SEQUENCE_NUMBER) { | |
546 | ospf_del_if_params(oip); | |
547 | rn->info = NULL; | |
548 | route_unlock_node(rn); | |
549 | } | |
718e3744 | 550 | } |
551 | ||
d62a17ae | 552 | struct ospf_if_params *ospf_lookup_if_params(struct interface *ifp, |
553 | struct in_addr addr) | |
718e3744 | 554 | { |
d62a17ae | 555 | struct prefix_ipv4 p; |
556 | struct route_node *rn; | |
557 | ||
558 | p.family = AF_INET; | |
559 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
560 | p.prefix = addr; | |
561 | ||
562 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
563 | ||
564 | if (rn) { | |
565 | route_unlock_node(rn); | |
566 | return rn->info; | |
567 | } | |
568 | ||
569 | return NULL; | |
718e3744 | 570 | } |
571 | ||
d62a17ae | 572 | struct ospf_if_params *ospf_get_if_params(struct interface *ifp, |
573 | struct in_addr addr) | |
718e3744 | 574 | { |
d62a17ae | 575 | struct prefix_ipv4 p; |
576 | struct route_node *rn; | |
577 | ||
578 | p.family = AF_INET; | |
579 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
580 | p.prefix = addr; | |
a6435618 | 581 | apply_mask_ipv4(&p); |
d62a17ae | 582 | |
583 | rn = route_node_get(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
584 | ||
585 | if (rn->info == NULL) | |
586 | rn->info = ospf_new_if_params(); | |
587 | else | |
588 | route_unlock_node(rn); | |
589 | ||
590 | return rn->info; | |
718e3744 | 591 | } |
592 | ||
d62a17ae | 593 | void ospf_if_update_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 594 | { |
d62a17ae | 595 | struct route_node *rn; |
596 | struct ospf_interface *oi; | |
597 | ||
598 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
599 | if ((oi = rn->info) == NULL) | |
600 | continue; | |
601 | ||
602 | if (IPV4_ADDR_SAME(&oi->address->u.prefix4, &addr)) | |
603 | oi->params = ospf_lookup_if_params( | |
604 | ifp, oi->address->u.prefix4); | |
605 | } | |
718e3744 | 606 | } |
607 | ||
d62a17ae | 608 | int ospf_if_new_hook(struct interface *ifp) |
718e3744 | 609 | { |
d62a17ae | 610 | int rc = 0; |
611 | ||
612 | ifp->info = XCALLOC(MTYPE_OSPF_IF_INFO, sizeof(struct ospf_if_info)); | |
613 | ||
614 | IF_OIFS(ifp) = route_table_init(); | |
615 | IF_OIFS_PARAMS(ifp) = route_table_init(); | |
616 | ||
617 | IF_DEF_PARAMS(ifp) = ospf_new_if_params(); | |
618 | ||
619 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), transmit_delay); | |
620 | IF_DEF_PARAMS(ifp)->transmit_delay = OSPF_TRANSMIT_DELAY_DEFAULT; | |
621 | ||
622 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), retransmit_interval); | |
623 | IF_DEF_PARAMS(ifp)->retransmit_interval = | |
624 | OSPF_RETRANSMIT_INTERVAL_DEFAULT; | |
625 | ||
626 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), priority); | |
627 | IF_DEF_PARAMS(ifp)->priority = OSPF_ROUTER_PRIORITY_DEFAULT; | |
628 | ||
629 | IF_DEF_PARAMS(ifp)->mtu_ignore = OSPF_MTU_IGNORE_DEFAULT; | |
630 | ||
631 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_hello); | |
632 | IF_DEF_PARAMS(ifp)->v_hello = OSPF_HELLO_INTERVAL_DEFAULT; | |
633 | ||
634 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), fast_hello); | |
635 | IF_DEF_PARAMS(ifp)->fast_hello = OSPF_FAST_HELLO_DEFAULT; | |
636 | ||
637 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_wait); | |
638 | IF_DEF_PARAMS(ifp)->v_wait = OSPF_ROUTER_DEAD_INTERVAL_DEFAULT; | |
639 | ||
640 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_simple); | |
641 | memset(IF_DEF_PARAMS(ifp)->auth_simple, 0, OSPF_AUTH_SIMPLE_SIZE); | |
642 | ||
643 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_type); | |
644 | IF_DEF_PARAMS(ifp)->auth_type = OSPF_AUTH_NOTSET; | |
645 | ||
646 | rc = ospf_opaque_new_if(ifp); | |
647 | return rc; | |
718e3744 | 648 | } |
649 | ||
d62a17ae | 650 | static int ospf_if_delete_hook(struct interface *ifp) |
718e3744 | 651 | { |
d62a17ae | 652 | int rc = 0; |
653 | struct route_node *rn; | |
654 | rc = ospf_opaque_del_if(ifp); | |
940b01aa | 655 | |
d62a17ae | 656 | route_table_finish(IF_OIFS(ifp)); |
940b01aa | 657 | |
d62a17ae | 658 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) |
659 | if (rn->info) | |
660 | ospf_del_if_params(rn->info); | |
661 | route_table_finish(IF_OIFS_PARAMS(ifp)); | |
940b01aa | 662 | |
d62a17ae | 663 | ospf_del_if_params((struct ospf_if_params *)IF_DEF_PARAMS(ifp)); |
664 | XFREE(MTYPE_OSPF_IF_INFO, ifp->info); | |
665 | ifp->info = NULL; | |
718e3744 | 666 | |
d62a17ae | 667 | return rc; |
718e3744 | 668 | } |
669 | ||
d62a17ae | 670 | int ospf_if_is_enable(struct ospf_interface *oi) |
718e3744 | 671 | { |
d62a17ae | 672 | if (!if_is_loopback(oi->ifp)) |
673 | if (if_is_up(oi->ifp)) | |
674 | return 1; | |
718e3744 | 675 | |
d62a17ae | 676 | return 0; |
718e3744 | 677 | } |
678 | ||
d62a17ae | 679 | void ospf_if_set_multicast(struct ospf_interface *oi) |
ba6454ec | 680 | { |
d62a17ae | 681 | if ((oi->state > ISM_Loopback) && (oi->type != OSPF_IFTYPE_LOOPBACK) |
682 | && (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
683 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
684 | /* The interface should belong to the OSPF-all-routers group. */ | |
685 | if (!OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS) | |
686 | && (ospf_if_add_allspfrouters(oi->ospf, oi->address, | |
687 | oi->ifp->ifindex) | |
688 | >= 0)) | |
689 | /* Set the flag only if the system call to join | |
690 | * succeeded. */ | |
691 | OI_MEMBER_JOINED(oi, MEMBER_ALLROUTERS); | |
692 | } else { | |
693 | /* The interface should NOT belong to the OSPF-all-routers | |
694 | * group. */ | |
695 | if (OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS)) { | |
696 | /* Only actually drop if this is the last reference */ | |
697 | if (OI_MEMBER_COUNT(oi, MEMBER_ALLROUTERS) == 1) | |
698 | ospf_if_drop_allspfrouters(oi->ospf, | |
699 | oi->address, | |
700 | oi->ifp->ifindex); | |
701 | /* Unset the flag regardless of whether the system call | |
702 | to leave | |
703 | the group succeeded, since it's much safer to assume | |
704 | that | |
705 | we are not a member. */ | |
706 | OI_MEMBER_LEFT(oi, MEMBER_ALLROUTERS); | |
707 | } | |
708 | } | |
709 | ||
710 | if (((oi->type == OSPF_IFTYPE_BROADCAST) | |
711 | || (oi->type == OSPF_IFTYPE_POINTOPOINT)) | |
712 | && ((oi->state == ISM_DR) || (oi->state == ISM_Backup)) | |
713 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
714 | /* The interface should belong to the OSPF-designated-routers | |
715 | * group. */ | |
716 | if (!OI_MEMBER_CHECK(oi, MEMBER_DROUTERS) | |
717 | && (ospf_if_add_alldrouters(oi->ospf, oi->address, | |
718 | oi->ifp->ifindex) | |
719 | >= 0)) | |
720 | /* Set the flag only if the system call to join | |
721 | * succeeded. */ | |
722 | OI_MEMBER_JOINED(oi, MEMBER_DROUTERS); | |
723 | } else { | |
724 | /* The interface should NOT belong to the | |
725 | * OSPF-designated-routers group */ | |
726 | if (OI_MEMBER_CHECK(oi, MEMBER_DROUTERS)) { | |
727 | /* drop only if last reference */ | |
728 | if (OI_MEMBER_COUNT(oi, MEMBER_DROUTERS) == 1) | |
729 | ospf_if_drop_alldrouters(oi->ospf, oi->address, | |
730 | oi->ifp->ifindex); | |
731 | ||
732 | /* Unset the flag regardless of whether the system call | |
733 | to leave | |
734 | the group succeeded, since it's much safer to assume | |
735 | that | |
736 | we are not a member. */ | |
737 | OI_MEMBER_LEFT(oi, MEMBER_DROUTERS); | |
738 | } | |
739 | } | |
ba6454ec | 740 | } |
741 | ||
d62a17ae | 742 | int ospf_if_up(struct ospf_interface *oi) |
718e3744 | 743 | { |
d62a17ae | 744 | if (oi == NULL) |
745 | return 0; | |
746 | ||
747 | if (oi->type == OSPF_IFTYPE_LOOPBACK) | |
748 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_LoopInd); | |
749 | else { | |
750 | ospf_if_stream_set(oi); | |
751 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_InterfaceUp); | |
752 | } | |
753 | ||
754 | return 1; | |
718e3744 | 755 | } |
756 | ||
d62a17ae | 757 | int ospf_if_down(struct ospf_interface *oi) |
718e3744 | 758 | { |
d62a17ae | 759 | if (oi == NULL) |
760 | return 0; | |
718e3744 | 761 | |
d62a17ae | 762 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); |
763 | /* delete position in router LSA */ | |
764 | oi->lsa_pos_beg = 0; | |
765 | oi->lsa_pos_end = 0; | |
766 | /* Shutdown packet reception and sending */ | |
767 | ospf_if_stream_unset(oi); | |
718e3744 | 768 | |
d62a17ae | 769 | return 1; |
718e3744 | 770 | } |
771 | ||
6b0655a2 | 772 | |
718e3744 | 773 | /* Virtual Link related functions. */ |
774 | ||
d62a17ae | 775 | struct ospf_vl_data *ospf_vl_data_new(struct ospf_area *area, |
776 | struct in_addr vl_peer) | |
718e3744 | 777 | { |
d62a17ae | 778 | struct ospf_vl_data *vl_data; |
718e3744 | 779 | |
d62a17ae | 780 | vl_data = XCALLOC(MTYPE_OSPF_VL_DATA, sizeof(struct ospf_vl_data)); |
718e3744 | 781 | |
d62a17ae | 782 | vl_data->vl_peer.s_addr = vl_peer.s_addr; |
783 | vl_data->vl_area_id = area->area_id; | |
784 | vl_data->vl_area_id_fmt = area->area_id_fmt; | |
718e3744 | 785 | |
d62a17ae | 786 | return vl_data; |
718e3744 | 787 | } |
788 | ||
d62a17ae | 789 | void ospf_vl_data_free(struct ospf_vl_data *vl_data) |
718e3744 | 790 | { |
d62a17ae | 791 | XFREE(MTYPE_OSPF_VL_DATA, vl_data); |
718e3744 | 792 | } |
793 | ||
794 | u_int vlink_count = 0; | |
795 | ||
d62a17ae | 796 | struct ospf_interface *ospf_vl_new(struct ospf *ospf, |
797 | struct ospf_vl_data *vl_data) | |
718e3744 | 798 | { |
d62a17ae | 799 | struct ospf_interface *voi; |
800 | struct interface *vi; | |
bcc24579 | 801 | char ifname[INTERFACE_NAMSIZ]; |
d62a17ae | 802 | struct ospf_area *area; |
803 | struct in_addr area_id; | |
804 | struct connected *co; | |
805 | struct prefix_ipv4 *p; | |
806 | ||
807 | if (IS_DEBUG_OSPF_EVENT) | |
808 | zlog_debug("ospf_vl_new(): Start"); | |
809 | if (vlink_count == OSPF_VL_MAX_COUNT) { | |
810 | if (IS_DEBUG_OSPF_EVENT) | |
811 | zlog_debug( | |
812 | "ospf_vl_new(): Alarm: " | |
813 | "cannot create more than OSPF_MAX_VL_COUNT virtual links"); | |
814 | return NULL; | |
815 | } | |
816 | ||
817 | if (IS_DEBUG_OSPF_EVENT) | |
b5a8894d CS |
818 | zlog_debug("ospf_vl_new(): creating pseudo zebra interface vrf id %u", |
819 | ospf->vrf_id); | |
d62a17ae | 820 | |
821 | snprintf(ifname, sizeof(ifname), "VLINK%d", vlink_count); | |
bcc24579 | 822 | vi = if_create(ifname, ospf->vrf_id); |
d62a17ae | 823 | /* |
824 | * if_create sets ZEBRA_INTERFACE_LINKDETECTION | |
825 | * virtual links don't need this. | |
826 | */ | |
827 | UNSET_FLAG(vi->status, ZEBRA_INTERFACE_LINKDETECTION); | |
828 | co = connected_new(); | |
829 | co->ifp = vi; | |
830 | listnode_add(vi->connected, co); | |
831 | ||
832 | p = prefix_ipv4_new(); | |
833 | p->family = AF_INET; | |
834 | p->prefix.s_addr = 0; | |
835 | p->prefixlen = 0; | |
836 | ||
837 | co->address = (struct prefix *)p; | |
838 | ||
839 | voi = ospf_if_new(ospf, vi, co->address); | |
840 | if (voi == NULL) { | |
841 | if (IS_DEBUG_OSPF_EVENT) | |
842 | zlog_debug( | |
843 | "ospf_vl_new(): Alarm: OSPF int structure is not created"); | |
844 | return NULL; | |
845 | } | |
846 | voi->connected = co; | |
847 | voi->vl_data = vl_data; | |
848 | voi->ifp->mtu = OSPF_VL_MTU; | |
849 | voi->type = OSPF_IFTYPE_VIRTUALLINK; | |
850 | ||
851 | vlink_count++; | |
852 | if (IS_DEBUG_OSPF_EVENT) | |
853 | zlog_debug("ospf_vl_new(): Created name: %s", ifname); | |
854 | if (IS_DEBUG_OSPF_EVENT) | |
855 | zlog_debug("ospf_vl_new(): set if->name to %s", vi->name); | |
856 | ||
857 | area_id.s_addr = 0; | |
858 | area = ospf_area_get(ospf, area_id); | |
859 | voi->area = area; | |
860 | ||
861 | if (IS_DEBUG_OSPF_EVENT) | |
862 | zlog_debug( | |
863 | "ospf_vl_new(): set associated area to the backbone"); | |
864 | ||
865 | /* Add pseudo neighbor. */ | |
866 | ospf_nbr_self_reset(voi, voi->ospf->router_id); | |
867 | ||
868 | ospf_area_add_if(voi->area, voi); | |
869 | ||
870 | ospf_if_stream_set(voi); | |
871 | ||
872 | if (IS_DEBUG_OSPF_EVENT) | |
873 | zlog_debug("ospf_vl_new(): Stop"); | |
874 | return voi; | |
718e3744 | 875 | } |
876 | ||
d62a17ae | 877 | static void ospf_vl_if_delete(struct ospf_vl_data *vl_data) |
718e3744 | 878 | { |
d62a17ae | 879 | struct interface *ifp = vl_data->vl_oi->ifp; |
880 | vl_data->vl_oi->address->u.prefix4.s_addr = 0; | |
881 | vl_data->vl_oi->address->prefixlen = 0; | |
882 | ospf_if_free(vl_data->vl_oi); | |
883 | if_delete(ifp); | |
884 | vlink_count--; | |
718e3744 | 885 | } |
886 | ||
9c27ef9b PJ |
887 | /* Look up vl_data for given peer, optionally qualified to be in the |
888 | * specified area. NULL area returns first found.. | |
889 | */ | |
d62a17ae | 890 | struct ospf_vl_data *ospf_vl_lookup(struct ospf *ospf, struct ospf_area *area, |
891 | struct in_addr vl_peer) | |
718e3744 | 892 | { |
d62a17ae | 893 | struct ospf_vl_data *vl_data; |
894 | struct listnode *node; | |
895 | ||
896 | if (IS_DEBUG_OSPF_EVENT) { | |
897 | zlog_debug("%s: Looking for %s", __func__, inet_ntoa(vl_peer)); | |
898 | if (area) | |
899 | zlog_debug("%s: in area %s", __func__, | |
900 | inet_ntoa(area->area_id)); | |
901 | } | |
902 | ||
903 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
904 | if (IS_DEBUG_OSPF_EVENT) | |
905 | zlog_debug("%s: VL %s, peer %s", __func__, | |
906 | vl_data->vl_oi->ifp->name, | |
907 | inet_ntoa(vl_data->vl_peer)); | |
908 | ||
909 | if (area | |
910 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
911 | continue; | |
912 | ||
913 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &vl_peer)) | |
914 | return vl_data; | |
915 | } | |
916 | ||
917 | return NULL; | |
718e3744 | 918 | } |
919 | ||
d62a17ae | 920 | static void ospf_vl_shutdown(struct ospf_vl_data *vl_data) |
718e3744 | 921 | { |
d62a17ae | 922 | struct ospf_interface *oi; |
718e3744 | 923 | |
d62a17ae | 924 | if ((oi = vl_data->vl_oi) == NULL) |
925 | return; | |
718e3744 | 926 | |
d62a17ae | 927 | oi->address->u.prefix4.s_addr = 0; |
928 | oi->address->prefixlen = 0; | |
718e3744 | 929 | |
d62a17ae | 930 | UNSET_FLAG(oi->ifp->flags, IFF_UP); |
931 | /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */ | |
932 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); | |
718e3744 | 933 | } |
934 | ||
d62a17ae | 935 | void ospf_vl_add(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 936 | { |
d62a17ae | 937 | listnode_add(ospf->vlinks, vl_data); |
938 | hook_call(ospf_vl_add, vl_data); | |
718e3744 | 939 | } |
940 | ||
d62a17ae | 941 | void ospf_vl_delete(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 942 | { |
d62a17ae | 943 | ospf_vl_shutdown(vl_data); |
944 | ospf_vl_if_delete(vl_data); | |
718e3744 | 945 | |
d62a17ae | 946 | hook_call(ospf_vl_delete, vl_data); |
947 | listnode_delete(ospf->vlinks, vl_data); | |
718e3744 | 948 | |
d62a17ae | 949 | ospf_vl_data_free(vl_data); |
718e3744 | 950 | } |
951 | ||
d62a17ae | 952 | static int ospf_vl_set_params(struct ospf_vl_data *vl_data, struct vertex *v) |
718e3744 | 953 | { |
d62a17ae | 954 | int changed = 0; |
955 | struct ospf_interface *voi; | |
956 | struct listnode *node; | |
957 | struct vertex_parent *vp = NULL; | |
958 | unsigned int i; | |
959 | struct router_lsa *rl; | |
960 | ||
961 | voi = vl_data->vl_oi; | |
962 | ||
963 | if (voi->output_cost != v->distance) { | |
964 | ||
965 | voi->output_cost = v->distance; | |
966 | changed = 1; | |
967 | } | |
968 | ||
969 | for (ALL_LIST_ELEMENTS_RO(v->parents, node, vp)) { | |
970 | vl_data->nexthop.oi = vp->nexthop->oi; | |
971 | vl_data->nexthop.router = vp->nexthop->router; | |
972 | ||
973 | if (!IPV4_ADDR_SAME(&voi->address->u.prefix4, | |
974 | &vl_data->nexthop.oi->address->u.prefix4)) | |
975 | changed = 1; | |
976 | ||
977 | voi->address->u.prefix4 = | |
978 | vl_data->nexthop.oi->address->u.prefix4; | |
979 | voi->address->prefixlen = | |
980 | vl_data->nexthop.oi->address->prefixlen; | |
981 | ||
982 | break; /* We take the first interface. */ | |
983 | } | |
984 | ||
985 | rl = (struct router_lsa *)v->lsa; | |
986 | ||
987 | /* use SPF determined backlink index in struct vertex | |
988 | * for virtual link destination address | |
989 | */ | |
990 | if (vp && vp->backlink >= 0) { | |
991 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
992 | &rl->link[vp->backlink].link_data)) | |
993 | changed = 1; | |
994 | vl_data->peer_addr = rl->link[vp->backlink].link_data; | |
995 | } else { | |
996 | /* This is highly odd, there is no backlink index | |
997 | * there should be due to the ospf_spf_has_link() check | |
998 | * in SPF. Lets warn and try pick a link anyway. | |
999 | */ | |
1000 | zlog_warn("ospf_vl_set_params: No backlink for %s!", | |
1001 | vl_data->vl_oi->ifp->name); | |
1002 | for (i = 0; i < ntohs(rl->links); i++) { | |
1003 | switch (rl->link[i].type) { | |
1004 | case LSA_LINK_TYPE_VIRTUALLINK: | |
1005 | if (IS_DEBUG_OSPF_EVENT) | |
1006 | zlog_debug( | |
1007 | "found back link through VL"); | |
1008 | /* fallthru */ | |
1009 | case LSA_LINK_TYPE_TRANSIT: | |
1010 | case LSA_LINK_TYPE_POINTOPOINT: | |
1011 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1012 | &rl->link[i].link_data)) | |
1013 | changed = 1; | |
1014 | vl_data->peer_addr = rl->link[i].link_data; | |
1015 | } | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | if (IS_DEBUG_OSPF_EVENT) | |
1020 | zlog_debug("%s: %s peer address: %s, cost: %d,%schanged", | |
1021 | __func__, vl_data->vl_oi->ifp->name, | |
1022 | inet_ntoa(vl_data->peer_addr), voi->output_cost, | |
1023 | (changed ? " " : " un")); | |
1024 | ||
1025 | return changed; | |
718e3744 | 1026 | } |
1027 | ||
1028 | ||
d62a17ae | 1029 | void ospf_vl_up_check(struct ospf_area *area, struct in_addr rid, |
1030 | struct vertex *v) | |
718e3744 | 1031 | { |
d62a17ae | 1032 | struct ospf *ospf = area->ospf; |
1033 | struct listnode *node; | |
1034 | struct ospf_vl_data *vl_data; | |
1035 | struct ospf_interface *oi; | |
1036 | ||
1037 | if (IS_DEBUG_OSPF_EVENT) { | |
1038 | zlog_debug("ospf_vl_up_check(): Start"); | |
1039 | zlog_debug("ospf_vl_up_check(): Router ID is %s", | |
1040 | inet_ntoa(rid)); | |
1041 | zlog_debug("ospf_vl_up_check(): Area is %s", | |
1042 | inet_ntoa(area->area_id)); | |
718e3744 | 1043 | } |
1044 | ||
d62a17ae | 1045 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { |
1046 | if (IS_DEBUG_OSPF_EVENT) { | |
1047 | zlog_debug("%s: considering VL, %s in area %s", | |
1048 | __func__, vl_data->vl_oi->ifp->name, | |
1049 | inet_ntoa(vl_data->vl_area_id)); | |
1050 | zlog_debug("%s: peer ID: %s", __func__, | |
1051 | inet_ntoa(vl_data->vl_peer)); | |
1052 | } | |
1053 | ||
1054 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &rid) | |
1055 | && IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) { | |
1056 | oi = vl_data->vl_oi; | |
1057 | SET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1058 | ||
1059 | if (IS_DEBUG_OSPF_EVENT) | |
1060 | zlog_debug( | |
1061 | "ospf_vl_up_check(): this VL matched"); | |
1062 | ||
1063 | if (oi->state == ISM_Down) { | |
1064 | if (IS_DEBUG_OSPF_EVENT) | |
1065 | zlog_debug( | |
1066 | "ospf_vl_up_check(): VL is down, waking it up"); | |
1067 | SET_FLAG(oi->ifp->flags, IFF_UP); | |
1068 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceUp); | |
1069 | } | |
1070 | ||
1071 | if (ospf_vl_set_params(vl_data, v)) { | |
1072 | if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1073 | zlog_debug( | |
1074 | "ospf_vl_up_check: VL cost change," | |
1075 | " scheduling router lsa refresh"); | |
1076 | if (ospf->backbone) | |
1077 | ospf_router_lsa_update_area( | |
1078 | ospf->backbone); | |
1079 | else if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1080 | zlog_debug( | |
1081 | "ospf_vl_up_check: VL cost change, no backbone!"); | |
1082 | } | |
1083 | } | |
1084 | } | |
718e3744 | 1085 | } |
1086 | ||
d62a17ae | 1087 | void ospf_vl_unapprove(struct ospf *ospf) |
718e3744 | 1088 | { |
d62a17ae | 1089 | struct listnode *node; |
1090 | struct ospf_vl_data *vl_data; | |
718e3744 | 1091 | |
d62a17ae | 1092 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) |
1093 | UNSET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
718e3744 | 1094 | } |
1095 | ||
d62a17ae | 1096 | void ospf_vl_shut_unapproved(struct ospf *ospf) |
718e3744 | 1097 | { |
d62a17ae | 1098 | struct listnode *node, *nnode; |
1099 | struct ospf_vl_data *vl_data; | |
718e3744 | 1100 | |
d62a17ae | 1101 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) |
1102 | if (!CHECK_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED)) | |
1103 | ospf_vl_shutdown(vl_data); | |
718e3744 | 1104 | } |
1105 | ||
d62a17ae | 1106 | int ospf_full_virtual_nbrs(struct ospf_area *area) |
718e3744 | 1107 | { |
d62a17ae | 1108 | if (IS_DEBUG_OSPF_EVENT) { |
1109 | zlog_debug( | |
1110 | "counting fully adjacent virtual neighbors in area %s", | |
1111 | inet_ntoa(area->area_id)); | |
1112 | zlog_debug("there are %d of them", area->full_vls); | |
1113 | } | |
1114 | ||
1115 | return area->full_vls; | |
718e3744 | 1116 | } |
1117 | ||
d62a17ae | 1118 | int ospf_vls_in_area(struct ospf_area *area) |
718e3744 | 1119 | { |
d62a17ae | 1120 | struct listnode *node; |
1121 | struct ospf_vl_data *vl_data; | |
1122 | int c = 0; | |
718e3744 | 1123 | |
d62a17ae | 1124 | for (ALL_LIST_ELEMENTS_RO(area->ospf->vlinks, node, vl_data)) |
1125 | if (IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1126 | c++; | |
718e3744 | 1127 | |
d62a17ae | 1128 | return c; |
718e3744 | 1129 | } |
1130 | ||
6b0655a2 | 1131 | |
d62a17ae | 1132 | struct crypt_key *ospf_crypt_key_new() |
718e3744 | 1133 | { |
d62a17ae | 1134 | return XCALLOC(MTYPE_OSPF_CRYPT_KEY, sizeof(struct crypt_key)); |
718e3744 | 1135 | } |
1136 | ||
d62a17ae | 1137 | void ospf_crypt_key_add(struct list *crypt, struct crypt_key *ck) |
718e3744 | 1138 | { |
d62a17ae | 1139 | listnode_add(crypt, ck); |
718e3744 | 1140 | } |
1141 | ||
d62a17ae | 1142 | struct crypt_key *ospf_crypt_key_lookup(struct list *auth_crypt, u_char key_id) |
718e3744 | 1143 | { |
d62a17ae | 1144 | struct listnode *node; |
1145 | struct crypt_key *ck; | |
718e3744 | 1146 | |
d62a17ae | 1147 | for (ALL_LIST_ELEMENTS_RO(auth_crypt, node, ck)) |
1148 | if (ck->key_id == key_id) | |
1149 | return ck; | |
718e3744 | 1150 | |
d62a17ae | 1151 | return NULL; |
718e3744 | 1152 | } |
1153 | ||
d62a17ae | 1154 | int ospf_crypt_key_delete(struct list *auth_crypt, u_char key_id) |
718e3744 | 1155 | { |
d62a17ae | 1156 | struct listnode *node, *nnode; |
1157 | struct crypt_key *ck; | |
1158 | ||
1159 | for (ALL_LIST_ELEMENTS(auth_crypt, node, nnode, ck)) { | |
1160 | if (ck->key_id == key_id) { | |
1161 | listnode_delete(auth_crypt, ck); | |
1162 | XFREE(MTYPE_OSPF_CRYPT_KEY, ck); | |
1163 | return 1; | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | return 0; | |
718e3744 | 1168 | } |
1169 | ||
d62a17ae | 1170 | u_char ospf_default_iftype(struct interface *ifp) |
bc18d616 | 1171 | { |
d62a17ae | 1172 | if (if_is_pointopoint(ifp)) |
1173 | return OSPF_IFTYPE_POINTOPOINT; | |
1174 | else if (if_is_loopback(ifp)) | |
1175 | return OSPF_IFTYPE_LOOPBACK; | |
1176 | else | |
1177 | return OSPF_IFTYPE_BROADCAST; | |
bc18d616 | 1178 | } |
1179 | ||
d62a17ae | 1180 | void ospf_if_init() |
718e3744 | 1181 | { |
d62a17ae | 1182 | /* Initialize Zebra interface data structure. */ |
ce19a04a DL |
1183 | hook_register_prio(if_add, 0, ospf_if_new_hook); |
1184 | hook_register_prio(if_del, 0, ospf_if_delete_hook); | |
718e3744 | 1185 | } |