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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)) | |
ef7bd2a3 | 53 | DEFINE_HOOK(ospf_if_update, (struct interface * ifp), (ifp)) |
3c3c3252 | 54 | DEFINE_HOOK(ospf_if_delete, (struct interface * ifp), (ifp)) |
6b0655a2 | 55 | |
2bc7673f CS |
56 | int ospf_interface_neighbor_count(struct ospf_interface *oi) |
57 | { | |
58 | int count = 0; | |
59 | struct route_node *rn; | |
60 | struct ospf_neighbor *nbr = NULL; | |
61 | ||
62 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) { | |
63 | nbr = rn->info; | |
64 | if (nbr) { | |
65 | /* Do not show myself. */ | |
66 | if (nbr == oi->nbr_self) | |
67 | continue; | |
68 | /* Down state is not shown. */ | |
69 | if (nbr->state == NSM_Down) | |
70 | continue; | |
71 | count++; | |
72 | } | |
73 | } | |
74 | ||
75 | return count; | |
76 | } | |
77 | ||
d62a17ae | 78 | int ospf_if_get_output_cost(struct ospf_interface *oi) |
718e3744 | 79 | { |
d62a17ae | 80 | /* If all else fails, use default OSPF cost */ |
d7c0a89a QY |
81 | uint32_t cost; |
82 | uint32_t bw, refbw; | |
d62a17ae | 83 | |
84 | /* ifp speed and bw can be 0 in some platforms, use ospf default bw | |
85 | if bw is configured under interface it would be used. | |
86 | */ | |
87 | if (!oi->ifp->bandwidth && oi->ifp->speed) | |
88 | bw = oi->ifp->speed; | |
89 | else | |
90 | bw = oi->ifp->bandwidth ? oi->ifp->bandwidth | |
91 | : OSPF_DEFAULT_BANDWIDTH; | |
92 | refbw = oi->ospf->ref_bandwidth; | |
93 | ||
94 | /* A specifed ip ospf cost overrides a calculated one. */ | |
95 | if (OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS(oi->ifp), output_cost_cmd) | |
96 | || OSPF_IF_PARAM_CONFIGURED(oi->params, output_cost_cmd)) | |
97 | cost = OSPF_IF_PARAM(oi, output_cost_cmd); | |
98 | /* See if a cost can be calculated from the zebra processes | |
99 | interface bandwidth field. */ | |
100 | else { | |
d7c0a89a | 101 | cost = (uint32_t)((double)refbw / (double)bw + (double)0.5); |
d62a17ae | 102 | if (cost < 1) |
103 | cost = 1; | |
104 | else if (cost > 65535) | |
105 | cost = 65535; | |
106 | } | |
107 | ||
108 | return cost; | |
718e3744 | 109 | } |
110 | ||
d62a17ae | 111 | void ospf_if_recalculate_output_cost(struct interface *ifp) |
718e3744 | 112 | { |
d7c0a89a | 113 | uint32_t newcost; |
d62a17ae | 114 | struct route_node *rn; |
115 | ||
116 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
117 | struct ospf_interface *oi; | |
118 | ||
119 | if ((oi = rn->info) == NULL) | |
120 | continue; | |
121 | ||
122 | newcost = ospf_if_get_output_cost(oi); | |
123 | ||
124 | /* Is actual output cost changed? */ | |
125 | if (oi->output_cost != newcost) { | |
126 | oi->output_cost = newcost; | |
127 | ospf_router_lsa_update_area(oi->area); | |
128 | } | |
718e3744 | 129 | } |
718e3744 | 130 | } |
131 | ||
d62a17ae | 132 | /* Simulate down/up on the interface. This is needed, for example, when |
a608bbf2 | 133 | the MTU changes. */ |
d62a17ae | 134 | void ospf_if_reset(struct interface *ifp) |
a608bbf2 | 135 | { |
d62a17ae | 136 | struct route_node *rn; |
137 | ||
138 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
139 | struct ospf_interface *oi; | |
140 | ||
141 | if ((oi = rn->info) == NULL) | |
142 | continue; | |
143 | ||
144 | ospf_if_down(oi); | |
145 | ospf_if_up(oi); | |
146 | } | |
a608bbf2 | 147 | } |
148 | ||
d62a17ae | 149 | void ospf_if_reset_variables(struct ospf_interface *oi) |
718e3744 | 150 | { |
d62a17ae | 151 | /* Set default values. */ |
152 | /* don't clear this flag. oi->flag = OSPF_IF_DISABLE; */ | |
718e3744 | 153 | |
d62a17ae | 154 | if (oi->vl_data) |
155 | oi->type = OSPF_IFTYPE_VIRTUALLINK; | |
156 | else | |
157 | /* preserve network-type */ | |
158 | if (oi->type != OSPF_IFTYPE_NBMA) | |
159 | oi->type = OSPF_IFTYPE_BROADCAST; | |
718e3744 | 160 | |
d62a17ae | 161 | oi->state = ISM_Down; |
718e3744 | 162 | |
d62a17ae | 163 | oi->crypt_seqnum = 0; |
718e3744 | 164 | |
d62a17ae | 165 | /* This must be short, (less than RxmtInterval) |
166 | - RFC 2328 Section 13.5 para 3. Set to 1 second to avoid Acks being | |
167 | held back for too long - MAG */ | |
168 | oi->v_ls_ack = 1; | |
718e3744 | 169 | } |
170 | ||
20916fba | 171 | /* lookup oi for specified prefix/ifp */ |
d62a17ae | 172 | struct ospf_interface *ospf_if_table_lookup(struct interface *ifp, |
173 | struct prefix *prefix) | |
20916fba | 174 | { |
d62a17ae | 175 | struct prefix p; |
176 | struct route_node *rn; | |
177 | struct ospf_interface *rninfo = NULL; | |
178 | ||
179 | p = *prefix; | |
180 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
181 | ||
182 | /* route_node_get implicitely locks */ | |
183 | if ((rn = route_node_lookup(IF_OIFS(ifp), &p))) { | |
184 | rninfo = (struct ospf_interface *)rn->info; | |
185 | route_unlock_node(rn); | |
186 | } | |
187 | ||
188 | return rninfo; | |
20916fba | 189 | } |
190 | ||
d62a17ae | 191 | static void ospf_add_to_if(struct interface *ifp, struct ospf_interface *oi) |
718e3744 | 192 | { |
d62a17ae | 193 | struct route_node *rn; |
194 | struct prefix p; | |
195 | ||
196 | p = *oi->address; | |
197 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
a6435618 | 198 | apply_mask(&p); |
d62a17ae | 199 | |
200 | rn = route_node_get(IF_OIFS(ifp), &p); | |
201 | /* rn->info should either be NULL or equal to this oi | |
202 | * as route_node_get may return an existing node | |
203 | */ | |
204 | assert(!rn->info || rn->info == oi); | |
205 | rn->info = oi; | |
718e3744 | 206 | } |
207 | ||
d62a17ae | 208 | static void ospf_delete_from_if(struct interface *ifp, |
209 | struct ospf_interface *oi) | |
718e3744 | 210 | { |
d62a17ae | 211 | struct route_node *rn; |
212 | struct prefix p; | |
213 | ||
214 | p = *oi->address; | |
215 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
216 | ||
217 | rn = route_node_lookup(IF_OIFS(oi->ifp), &p); | |
218 | assert(rn); | |
219 | assert(rn->info); | |
220 | rn->info = NULL; | |
221 | route_unlock_node(rn); | |
222 | route_unlock_node(rn); | |
718e3744 | 223 | } |
224 | ||
d62a17ae | 225 | struct ospf_interface *ospf_if_new(struct ospf *ospf, struct interface *ifp, |
226 | struct prefix *p) | |
718e3744 | 227 | { |
d62a17ae | 228 | struct ospf_interface *oi; |
229 | ||
36a106e0 DS |
230 | oi = ospf_if_table_lookup(ifp, p); |
231 | if (oi) | |
d62a17ae | 232 | return oi; |
233 | ||
36a106e0 DS |
234 | oi = XCALLOC(MTYPE_OSPF_IF, sizeof(struct ospf_interface)); |
235 | ||
236 | oi->obuf = ospf_fifo_new(); | |
237 | ||
d62a17ae | 238 | /* Set zebra interface pointer. */ |
239 | oi->ifp = ifp; | |
240 | oi->address = p; | |
241 | ||
242 | ospf_add_to_if(ifp, oi); | |
243 | listnode_add(ospf->oiflist, oi); | |
244 | ||
245 | /* Initialize neighbor list. */ | |
246 | oi->nbrs = route_table_init(); | |
247 | ||
248 | /* Initialize static neighbor list. */ | |
249 | oi->nbr_nbma = list_new(); | |
250 | ||
251 | /* Initialize Link State Acknowledgment list. */ | |
252 | oi->ls_ack = list_new(); | |
253 | oi->ls_ack_direct.ls_ack = list_new(); | |
254 | ||
255 | /* Set default values. */ | |
256 | ospf_if_reset_variables(oi); | |
257 | ||
258 | /* Set pseudo neighbor to Null */ | |
259 | oi->nbr_self = NULL; | |
260 | ||
261 | oi->ls_upd_queue = route_table_init(); | |
262 | oi->t_ls_upd_event = NULL; | |
263 | oi->t_ls_ack_direct = NULL; | |
264 | ||
265 | oi->crypt_seqnum = time(NULL); | |
266 | ||
267 | ospf_opaque_type9_lsa_init(oi); | |
268 | ||
269 | oi->ospf = ospf; | |
4fc8a852 | 270 | |
d62a17ae | 271 | QOBJ_REG(oi, ospf_interface); |
272 | ||
b5a8894d CS |
273 | if (IS_DEBUG_OSPF_EVENT) |
274 | zlog_debug("%s: ospf interface %s vrf %s id %u created", | |
275 | __PRETTY_FUNCTION__, ifp->name, | |
868a0861 | 276 | ospf_get_name(ospf), ospf->vrf_id); |
b5a8894d | 277 | |
d62a17ae | 278 | return oi; |
718e3744 | 279 | } |
280 | ||
281 | /* Restore an interface to its pre UP state | |
282 | Used from ism_interface_down only */ | |
d62a17ae | 283 | void ospf_if_cleanup(struct ospf_interface *oi) |
718e3744 | 284 | { |
d62a17ae | 285 | struct route_node *rn; |
286 | struct listnode *node, *nnode; | |
287 | struct ospf_neighbor *nbr; | |
288 | struct ospf_nbr_nbma *nbr_nbma; | |
289 | struct ospf_lsa *lsa; | |
290 | ||
291 | /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */ | |
292 | /* delete all static neighbors attached to this interface */ | |
293 | for (ALL_LIST_ELEMENTS(oi->nbr_nbma, node, nnode, nbr_nbma)) { | |
294 | OSPF_POLL_TIMER_OFF(nbr_nbma->t_poll); | |
295 | ||
296 | if (nbr_nbma->nbr) { | |
297 | nbr_nbma->nbr->nbr_nbma = NULL; | |
298 | nbr_nbma->nbr = NULL; | |
299 | } | |
300 | ||
301 | nbr_nbma->oi = NULL; | |
302 | ||
303 | listnode_delete(oi->nbr_nbma, nbr_nbma); | |
718e3744 | 304 | } |
305 | ||
d62a17ae | 306 | /* send Neighbor event KillNbr to all associated neighbors. */ |
307 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) | |
308 | if ((nbr = rn->info) != NULL) | |
309 | if (nbr != oi->nbr_self) | |
310 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
311 | ||
312 | /* Cleanup Link State Acknowlegdment list. */ | |
313 | for (ALL_LIST_ELEMENTS(oi->ls_ack, node, nnode, lsa)) | |
314 | ospf_lsa_unlock(&lsa); /* oi->ls_ack */ | |
315 | list_delete_all_node(oi->ls_ack); | |
316 | ||
317 | oi->crypt_seqnum = 0; | |
318 | ||
319 | /* Empty link state update queue */ | |
320 | ospf_ls_upd_queue_empty(oi); | |
321 | ||
322 | /* Reset pseudo neighbor. */ | |
323 | ospf_nbr_self_reset(oi, oi->ospf->router_id); | |
718e3744 | 324 | } |
325 | ||
d62a17ae | 326 | void ospf_if_free(struct ospf_interface *oi) |
718e3744 | 327 | { |
d62a17ae | 328 | ospf_if_down(oi); |
329 | ||
36a106e0 | 330 | ospf_fifo_free(oi->obuf); |
4fc8a852 | 331 | |
d62a17ae | 332 | assert(oi->state == ISM_Down); |
333 | ||
334 | ospf_opaque_type9_lsa_term(oi); | |
335 | ||
336 | QOBJ_UNREG(oi); | |
337 | ||
338 | /* Free Pseudo Neighbour */ | |
339 | ospf_nbr_delete(oi->nbr_self); | |
718e3744 | 340 | |
d62a17ae | 341 | route_table_finish(oi->nbrs); |
342 | route_table_finish(oi->ls_upd_queue); | |
718e3744 | 343 | |
d62a17ae | 344 | /* Free any lists that should be freed */ |
6a154c88 | 345 | list_delete(&oi->nbr_nbma); |
718e3744 | 346 | |
6a154c88 DL |
347 | list_delete(&oi->ls_ack); |
348 | list_delete(&oi->ls_ack_direct.ls_ack); | |
ae19c240 | 349 | |
b5a8894d CS |
350 | if (IS_DEBUG_OSPF_EVENT) |
351 | zlog_debug("%s: ospf interface %s vrf %s id %u deleted", | |
352 | __PRETTY_FUNCTION__, oi->ifp->name, | |
a36898e7 DS |
353 | ospf_vrf_id_to_name(oi->ifp->vrf_id), |
354 | oi->ifp->vrf_id); | |
b5a8894d | 355 | |
d62a17ae | 356 | ospf_delete_from_if(oi->ifp, oi); |
718e3744 | 357 | |
d62a17ae | 358 | listnode_delete(oi->ospf->oiflist, oi); |
359 | listnode_delete(oi->area->oiflist, oi); | |
718e3744 | 360 | |
d62a17ae | 361 | thread_cancel_event(master, oi); |
cfd670f3 | 362 | |
d62a17ae | 363 | memset(oi, 0, sizeof(*oi)); |
364 | XFREE(MTYPE_OSPF_IF, oi); | |
718e3744 | 365 | } |
366 | ||
d62a17ae | 367 | int ospf_if_is_up(struct ospf_interface *oi) |
718e3744 | 368 | { |
d62a17ae | 369 | return if_is_up(oi->ifp); |
718e3744 | 370 | } |
371 | ||
d62a17ae | 372 | struct ospf_interface *ospf_if_exists(struct ospf_interface *oic) |
373 | { | |
374 | struct listnode *node; | |
375 | struct ospf *ospf; | |
376 | struct ospf_interface *oi; | |
2db3d05d | 377 | |
b5a8894d CS |
378 | if (!oic) |
379 | return NULL; | |
380 | ||
381 | ospf = oic->ospf; | |
382 | if (ospf == NULL) | |
d62a17ae | 383 | return NULL; |
2db3d05d | 384 | |
d62a17ae | 385 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) |
386 | if (oi == oic) | |
387 | return oi; | |
1eb8ef25 | 388 | |
d62a17ae | 389 | return NULL; |
2db3d05d | 390 | } |
391 | ||
c81ee5c9 | 392 | /* Lookup OSPF interface by router LSA posistion */ |
d62a17ae | 393 | struct ospf_interface *ospf_if_lookup_by_lsa_pos(struct ospf_area *area, |
394 | int lsa_pos) | |
c81ee5c9 | 395 | { |
d62a17ae | 396 | struct listnode *node; |
397 | struct ospf_interface *oi; | |
c81ee5c9 | 398 | |
d62a17ae | 399 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) { |
400 | if (lsa_pos >= oi->lsa_pos_beg && lsa_pos < oi->lsa_pos_end) | |
401 | return oi; | |
402 | } | |
403 | return NULL; | |
c81ee5c9 JT |
404 | } |
405 | ||
d62a17ae | 406 | struct ospf_interface *ospf_if_lookup_by_local_addr(struct ospf *ospf, |
407 | struct interface *ifp, | |
408 | struct in_addr address) | |
718e3744 | 409 | { |
d62a17ae | 410 | struct listnode *node; |
411 | struct ospf_interface *oi; | |
412 | ||
413 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) | |
414 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
415 | if (ifp && oi->ifp != ifp) | |
416 | continue; | |
417 | ||
418 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
419 | return oi; | |
420 | } | |
421 | ||
422 | return NULL; | |
718e3744 | 423 | } |
424 | ||
d62a17ae | 425 | struct ospf_interface *ospf_if_lookup_by_prefix(struct ospf *ospf, |
426 | struct prefix_ipv4 *p) | |
718e3744 | 427 | { |
d62a17ae | 428 | struct listnode *node; |
429 | struct ospf_interface *oi; | |
430 | ||
431 | /* Check each Interface. */ | |
432 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
433 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
434 | struct prefix ptmp; | |
435 | ||
436 | prefix_copy(&ptmp, CONNECTED_PREFIX(oi->connected)); | |
437 | apply_mask(&ptmp); | |
438 | if (prefix_same(&ptmp, (struct prefix *)p)) | |
439 | return oi; | |
440 | } | |
68980084 | 441 | } |
d62a17ae | 442 | return NULL; |
718e3744 | 443 | } |
444 | ||
05cf46ba | 445 | /* determine receiving interface by ifp and source address */ |
d62a17ae | 446 | struct ospf_interface *ospf_if_lookup_recv_if(struct ospf *ospf, |
447 | struct in_addr src, | |
448 | struct interface *ifp) | |
718e3744 | 449 | { |
d62a17ae | 450 | struct route_node *rn; |
451 | struct prefix_ipv4 addr; | |
452 | struct ospf_interface *oi, *match; | |
453 | ||
454 | addr.family = AF_INET; | |
455 | addr.prefix = src; | |
456 | addr.prefixlen = IPV4_MAX_BITLEN; | |
457 | ||
458 | match = NULL; | |
459 | ||
460 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
461 | oi = rn->info; | |
462 | ||
463 | if (!oi) /* oi can be NULL for PtP aliases */ | |
464 | continue; | |
465 | ||
466 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
467 | continue; | |
468 | ||
0c74bbe0 | 469 | if (if_is_loopback(oi->ifp) || if_is_vrf(oi->ifp)) |
d62a17ae | 470 | continue; |
471 | ||
472 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
473 | match = oi; | |
474 | else if (prefix_match(CONNECTED_PREFIX(oi->connected), | |
475 | (struct prefix *)&addr)) { | |
9d303b37 DL |
476 | if ((match == NULL) || (match->address->prefixlen |
477 | < oi->address->prefixlen)) | |
d62a17ae | 478 | match = oi; |
479 | } | |
718e3744 | 480 | } |
718e3744 | 481 | |
d62a17ae | 482 | return match; |
718e3744 | 483 | } |
6b0655a2 | 484 | |
85c8ef06 CS |
485 | static void ospf_if_reset_stats(struct ospf_interface *oi) |
486 | { | |
487 | oi->hello_in = oi->hello_out = 0; | |
488 | oi->db_desc_in = oi->db_desc_out = 0; | |
489 | oi->ls_req_in = oi->ls_req_out = 0; | |
490 | oi->ls_upd_in = oi->ls_upd_out = 0; | |
491 | oi->ls_ack_in = oi->ls_ack_out = 0; | |
492 | } | |
493 | ||
d62a17ae | 494 | void ospf_if_stream_unset(struct ospf_interface *oi) |
718e3744 | 495 | { |
d62a17ae | 496 | struct ospf *ospf = oi->ospf; |
497 | ||
36a106e0 DS |
498 | /* flush the interface packet queue */ |
499 | ospf_fifo_flush(oi->obuf); | |
500 | /*reset protocol stats */ | |
501 | ospf_if_reset_stats(oi); | |
502 | ||
503 | if (oi->on_write_q) { | |
504 | listnode_delete(ospf->oi_write_q, oi); | |
505 | if (list_isempty(ospf->oi_write_q)) | |
506 | OSPF_TIMER_OFF(ospf->t_write); | |
507 | oi->on_write_q = 0; | |
d62a17ae | 508 | } |
718e3744 | 509 | } |
68980084 | 510 | |
6b0655a2 | 511 | |
d62a17ae | 512 | static struct ospf_if_params *ospf_new_if_params(void) |
718e3744 | 513 | { |
d62a17ae | 514 | struct ospf_if_params *oip; |
515 | ||
516 | oip = XCALLOC(MTYPE_OSPF_IF_PARAMS, sizeof(struct ospf_if_params)); | |
517 | ||
d62a17ae | 518 | UNSET_IF_PARAM(oip, output_cost_cmd); |
519 | UNSET_IF_PARAM(oip, transmit_delay); | |
520 | UNSET_IF_PARAM(oip, retransmit_interval); | |
521 | UNSET_IF_PARAM(oip, passive_interface); | |
522 | UNSET_IF_PARAM(oip, v_hello); | |
523 | UNSET_IF_PARAM(oip, fast_hello); | |
524 | UNSET_IF_PARAM(oip, v_wait); | |
525 | UNSET_IF_PARAM(oip, priority); | |
526 | UNSET_IF_PARAM(oip, type); | |
527 | UNSET_IF_PARAM(oip, auth_simple); | |
528 | UNSET_IF_PARAM(oip, auth_crypt); | |
529 | UNSET_IF_PARAM(oip, auth_type); | |
530 | ||
531 | oip->auth_crypt = list_new(); | |
532 | ||
533 | oip->network_lsa_seqnum = htonl(OSPF_INITIAL_SEQUENCE_NUMBER); | |
534 | ||
535 | return oip; | |
718e3744 | 536 | } |
537 | ||
d62a17ae | 538 | void ospf_del_if_params(struct ospf_if_params *oip) |
718e3744 | 539 | { |
6a154c88 | 540 | list_delete(&oip->auth_crypt); |
d62a17ae | 541 | bfd_info_free(&(oip->bfd_info)); |
542 | XFREE(MTYPE_OSPF_IF_PARAMS, oip); | |
718e3744 | 543 | } |
544 | ||
d62a17ae | 545 | void ospf_free_if_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 546 | { |
d62a17ae | 547 | struct ospf_if_params *oip; |
548 | struct prefix_ipv4 p; | |
549 | struct route_node *rn; | |
550 | ||
551 | p.family = AF_INET; | |
552 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
553 | p.prefix = addr; | |
554 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
555 | if (!rn || !rn->info) | |
556 | return; | |
557 | ||
558 | oip = rn->info; | |
559 | route_unlock_node(rn); | |
560 | ||
561 | if (!OSPF_IF_PARAM_CONFIGURED(oip, output_cost_cmd) | |
562 | && !OSPF_IF_PARAM_CONFIGURED(oip, transmit_delay) | |
563 | && !OSPF_IF_PARAM_CONFIGURED(oip, retransmit_interval) | |
564 | && !OSPF_IF_PARAM_CONFIGURED(oip, passive_interface) | |
565 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_hello) | |
566 | && !OSPF_IF_PARAM_CONFIGURED(oip, fast_hello) | |
567 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_wait) | |
568 | && !OSPF_IF_PARAM_CONFIGURED(oip, priority) | |
569 | && !OSPF_IF_PARAM_CONFIGURED(oip, type) | |
570 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_simple) | |
571 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_type) | |
572 | && listcount(oip->auth_crypt) == 0 | |
573 | && ntohl(oip->network_lsa_seqnum) != OSPF_INITIAL_SEQUENCE_NUMBER) { | |
574 | ospf_del_if_params(oip); | |
575 | rn->info = NULL; | |
576 | route_unlock_node(rn); | |
577 | } | |
718e3744 | 578 | } |
579 | ||
d62a17ae | 580 | struct ospf_if_params *ospf_lookup_if_params(struct interface *ifp, |
581 | struct in_addr addr) | |
718e3744 | 582 | { |
d62a17ae | 583 | struct prefix_ipv4 p; |
584 | struct route_node *rn; | |
585 | ||
586 | p.family = AF_INET; | |
587 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
588 | p.prefix = addr; | |
589 | ||
590 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
591 | ||
592 | if (rn) { | |
593 | route_unlock_node(rn); | |
594 | return rn->info; | |
595 | } | |
596 | ||
597 | return NULL; | |
718e3744 | 598 | } |
599 | ||
d62a17ae | 600 | struct ospf_if_params *ospf_get_if_params(struct interface *ifp, |
601 | struct in_addr addr) | |
718e3744 | 602 | { |
d62a17ae | 603 | struct prefix_ipv4 p; |
604 | struct route_node *rn; | |
605 | ||
606 | p.family = AF_INET; | |
607 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
608 | p.prefix = addr; | |
a6435618 | 609 | apply_mask_ipv4(&p); |
d62a17ae | 610 | |
611 | rn = route_node_get(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
612 | ||
613 | if (rn->info == NULL) | |
614 | rn->info = ospf_new_if_params(); | |
615 | else | |
616 | route_unlock_node(rn); | |
617 | ||
618 | return rn->info; | |
718e3744 | 619 | } |
620 | ||
d62a17ae | 621 | void ospf_if_update_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 622 | { |
d62a17ae | 623 | struct route_node *rn; |
624 | struct ospf_interface *oi; | |
625 | ||
626 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
627 | if ((oi = rn->info) == NULL) | |
628 | continue; | |
629 | ||
630 | if (IPV4_ADDR_SAME(&oi->address->u.prefix4, &addr)) | |
631 | oi->params = ospf_lookup_if_params( | |
632 | ifp, oi->address->u.prefix4); | |
633 | } | |
718e3744 | 634 | } |
635 | ||
d62a17ae | 636 | int ospf_if_new_hook(struct interface *ifp) |
718e3744 | 637 | { |
d62a17ae | 638 | int rc = 0; |
85d25587 | 639 | struct ospf_if_info *oii; |
d62a17ae | 640 | |
641 | ifp->info = XCALLOC(MTYPE_OSPF_IF_INFO, sizeof(struct ospf_if_info)); | |
642 | ||
85d25587 DS |
643 | oii = ifp->info; |
644 | oii->curr_mtu = ifp->mtu; | |
645 | ||
d62a17ae | 646 | IF_OIFS(ifp) = route_table_init(); |
647 | IF_OIFS_PARAMS(ifp) = route_table_init(); | |
648 | ||
649 | IF_DEF_PARAMS(ifp) = ospf_new_if_params(); | |
650 | ||
651 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), transmit_delay); | |
652 | IF_DEF_PARAMS(ifp)->transmit_delay = OSPF_TRANSMIT_DELAY_DEFAULT; | |
653 | ||
654 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), retransmit_interval); | |
655 | IF_DEF_PARAMS(ifp)->retransmit_interval = | |
656 | OSPF_RETRANSMIT_INTERVAL_DEFAULT; | |
657 | ||
658 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), priority); | |
659 | IF_DEF_PARAMS(ifp)->priority = OSPF_ROUTER_PRIORITY_DEFAULT; | |
660 | ||
661 | IF_DEF_PARAMS(ifp)->mtu_ignore = OSPF_MTU_IGNORE_DEFAULT; | |
662 | ||
663 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_hello); | |
664 | IF_DEF_PARAMS(ifp)->v_hello = OSPF_HELLO_INTERVAL_DEFAULT; | |
665 | ||
666 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), fast_hello); | |
667 | IF_DEF_PARAMS(ifp)->fast_hello = OSPF_FAST_HELLO_DEFAULT; | |
668 | ||
669 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_wait); | |
670 | IF_DEF_PARAMS(ifp)->v_wait = OSPF_ROUTER_DEAD_INTERVAL_DEFAULT; | |
671 | ||
672 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_simple); | |
673 | memset(IF_DEF_PARAMS(ifp)->auth_simple, 0, OSPF_AUTH_SIMPLE_SIZE); | |
674 | ||
675 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_type); | |
676 | IF_DEF_PARAMS(ifp)->auth_type = OSPF_AUTH_NOTSET; | |
677 | ||
678 | rc = ospf_opaque_new_if(ifp); | |
679 | return rc; | |
718e3744 | 680 | } |
681 | ||
d62a17ae | 682 | static int ospf_if_delete_hook(struct interface *ifp) |
718e3744 | 683 | { |
d62a17ae | 684 | int rc = 0; |
685 | struct route_node *rn; | |
686 | rc = ospf_opaque_del_if(ifp); | |
940b01aa | 687 | |
d62a17ae | 688 | route_table_finish(IF_OIFS(ifp)); |
940b01aa | 689 | |
d62a17ae | 690 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) |
691 | if (rn->info) | |
692 | ospf_del_if_params(rn->info); | |
693 | route_table_finish(IF_OIFS_PARAMS(ifp)); | |
940b01aa | 694 | |
d62a17ae | 695 | ospf_del_if_params((struct ospf_if_params *)IF_DEF_PARAMS(ifp)); |
696 | XFREE(MTYPE_OSPF_IF_INFO, ifp->info); | |
697 | ifp->info = NULL; | |
718e3744 | 698 | |
d62a17ae | 699 | return rc; |
718e3744 | 700 | } |
701 | ||
d62a17ae | 702 | int ospf_if_is_enable(struct ospf_interface *oi) |
718e3744 | 703 | { |
0c74bbe0 | 704 | if (!(if_is_loopback(oi->ifp) || if_is_vrf(oi->ifp))) |
d62a17ae | 705 | if (if_is_up(oi->ifp)) |
706 | return 1; | |
718e3744 | 707 | |
d62a17ae | 708 | return 0; |
718e3744 | 709 | } |
710 | ||
d62a17ae | 711 | void ospf_if_set_multicast(struct ospf_interface *oi) |
ba6454ec | 712 | { |
d62a17ae | 713 | if ((oi->state > ISM_Loopback) && (oi->type != OSPF_IFTYPE_LOOPBACK) |
714 | && (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
715 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
716 | /* The interface should belong to the OSPF-all-routers group. */ | |
717 | if (!OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS) | |
718 | && (ospf_if_add_allspfrouters(oi->ospf, oi->address, | |
719 | oi->ifp->ifindex) | |
720 | >= 0)) | |
721 | /* Set the flag only if the system call to join | |
722 | * succeeded. */ | |
723 | OI_MEMBER_JOINED(oi, MEMBER_ALLROUTERS); | |
724 | } else { | |
725 | /* The interface should NOT belong to the OSPF-all-routers | |
726 | * group. */ | |
727 | if (OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS)) { | |
728 | /* Only actually drop if this is the last reference */ | |
729 | if (OI_MEMBER_COUNT(oi, MEMBER_ALLROUTERS) == 1) | |
730 | ospf_if_drop_allspfrouters(oi->ospf, | |
731 | oi->address, | |
732 | oi->ifp->ifindex); | |
733 | /* Unset the flag regardless of whether the system call | |
734 | to leave | |
735 | the group succeeded, since it's much safer to assume | |
736 | that | |
737 | we are not a member. */ | |
738 | OI_MEMBER_LEFT(oi, MEMBER_ALLROUTERS); | |
739 | } | |
740 | } | |
741 | ||
742 | if (((oi->type == OSPF_IFTYPE_BROADCAST) | |
743 | || (oi->type == OSPF_IFTYPE_POINTOPOINT)) | |
744 | && ((oi->state == ISM_DR) || (oi->state == ISM_Backup)) | |
745 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
746 | /* The interface should belong to the OSPF-designated-routers | |
747 | * group. */ | |
748 | if (!OI_MEMBER_CHECK(oi, MEMBER_DROUTERS) | |
749 | && (ospf_if_add_alldrouters(oi->ospf, oi->address, | |
750 | oi->ifp->ifindex) | |
751 | >= 0)) | |
752 | /* Set the flag only if the system call to join | |
753 | * succeeded. */ | |
754 | OI_MEMBER_JOINED(oi, MEMBER_DROUTERS); | |
755 | } else { | |
756 | /* The interface should NOT belong to the | |
757 | * OSPF-designated-routers group */ | |
758 | if (OI_MEMBER_CHECK(oi, MEMBER_DROUTERS)) { | |
759 | /* drop only if last reference */ | |
760 | if (OI_MEMBER_COUNT(oi, MEMBER_DROUTERS) == 1) | |
761 | ospf_if_drop_alldrouters(oi->ospf, oi->address, | |
762 | oi->ifp->ifindex); | |
763 | ||
764 | /* Unset the flag regardless of whether the system call | |
765 | to leave | |
766 | the group succeeded, since it's much safer to assume | |
767 | that | |
768 | we are not a member. */ | |
769 | OI_MEMBER_LEFT(oi, MEMBER_DROUTERS); | |
770 | } | |
771 | } | |
ba6454ec | 772 | } |
773 | ||
d62a17ae | 774 | int ospf_if_up(struct ospf_interface *oi) |
718e3744 | 775 | { |
d62a17ae | 776 | if (oi == NULL) |
777 | return 0; | |
778 | ||
779 | if (oi->type == OSPF_IFTYPE_LOOPBACK) | |
780 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_LoopInd); | |
781 | else { | |
d62a17ae | 782 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_InterfaceUp); |
783 | } | |
784 | ||
785 | return 1; | |
718e3744 | 786 | } |
787 | ||
d62a17ae | 788 | int ospf_if_down(struct ospf_interface *oi) |
718e3744 | 789 | { |
d62a17ae | 790 | if (oi == NULL) |
791 | return 0; | |
718e3744 | 792 | |
d62a17ae | 793 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); |
794 | /* delete position in router LSA */ | |
795 | oi->lsa_pos_beg = 0; | |
796 | oi->lsa_pos_end = 0; | |
797 | /* Shutdown packet reception and sending */ | |
798 | ospf_if_stream_unset(oi); | |
718e3744 | 799 | |
d62a17ae | 800 | return 1; |
718e3744 | 801 | } |
802 | ||
6b0655a2 | 803 | |
718e3744 | 804 | /* Virtual Link related functions. */ |
805 | ||
d62a17ae | 806 | struct ospf_vl_data *ospf_vl_data_new(struct ospf_area *area, |
807 | struct in_addr vl_peer) | |
718e3744 | 808 | { |
d62a17ae | 809 | struct ospf_vl_data *vl_data; |
718e3744 | 810 | |
d62a17ae | 811 | vl_data = XCALLOC(MTYPE_OSPF_VL_DATA, sizeof(struct ospf_vl_data)); |
718e3744 | 812 | |
d62a17ae | 813 | vl_data->vl_peer.s_addr = vl_peer.s_addr; |
814 | vl_data->vl_area_id = area->area_id; | |
815 | vl_data->vl_area_id_fmt = area->area_id_fmt; | |
718e3744 | 816 | |
d62a17ae | 817 | return vl_data; |
718e3744 | 818 | } |
819 | ||
d62a17ae | 820 | void ospf_vl_data_free(struct ospf_vl_data *vl_data) |
718e3744 | 821 | { |
d62a17ae | 822 | XFREE(MTYPE_OSPF_VL_DATA, vl_data); |
718e3744 | 823 | } |
824 | ||
d7c0a89a | 825 | unsigned int vlink_count = 0; |
718e3744 | 826 | |
d62a17ae | 827 | struct ospf_interface *ospf_vl_new(struct ospf *ospf, |
828 | struct ospf_vl_data *vl_data) | |
718e3744 | 829 | { |
d62a17ae | 830 | struct ospf_interface *voi; |
831 | struct interface *vi; | |
bcc24579 | 832 | char ifname[INTERFACE_NAMSIZ]; |
d62a17ae | 833 | struct ospf_area *area; |
834 | struct in_addr area_id; | |
835 | struct connected *co; | |
836 | struct prefix_ipv4 *p; | |
837 | ||
838 | if (IS_DEBUG_OSPF_EVENT) | |
868a0861 | 839 | zlog_debug("ospf_vl_new()(%s): Start", ospf_get_name(ospf)); |
d62a17ae | 840 | if (vlink_count == OSPF_VL_MAX_COUNT) { |
841 | if (IS_DEBUG_OSPF_EVENT) | |
842 | zlog_debug( | |
843 | "ospf_vl_new(): Alarm: " | |
844 | "cannot create more than OSPF_MAX_VL_COUNT virtual links"); | |
845 | return NULL; | |
846 | } | |
847 | ||
848 | if (IS_DEBUG_OSPF_EVENT) | |
996c9314 LB |
849 | zlog_debug( |
850 | "ospf_vl_new(): creating pseudo zebra interface vrf id %u", | |
851 | ospf->vrf_id); | |
d62a17ae | 852 | |
2ec42b85 | 853 | snprintf(ifname, sizeof(ifname), "VLINK%u", vlink_count); |
d5c65bf1 | 854 | vi = if_create_name(ifname, ospf->vrf_id); |
d62a17ae | 855 | /* |
d5c65bf1 | 856 | * if_create_name sets ZEBRA_INTERFACE_LINKDETECTION |
d62a17ae | 857 | * virtual links don't need this. |
858 | */ | |
859 | UNSET_FLAG(vi->status, ZEBRA_INTERFACE_LINKDETECTION); | |
860 | co = connected_new(); | |
861 | co->ifp = vi; | |
862 | listnode_add(vi->connected, co); | |
863 | ||
864 | p = prefix_ipv4_new(); | |
865 | p->family = AF_INET; | |
866 | p->prefix.s_addr = 0; | |
867 | p->prefixlen = 0; | |
868 | ||
869 | co->address = (struct prefix *)p; | |
870 | ||
871 | voi = ospf_if_new(ospf, vi, co->address); | |
872 | if (voi == NULL) { | |
873 | if (IS_DEBUG_OSPF_EVENT) | |
874 | zlog_debug( | |
875 | "ospf_vl_new(): Alarm: OSPF int structure is not created"); | |
876 | return NULL; | |
877 | } | |
878 | voi->connected = co; | |
879 | voi->vl_data = vl_data; | |
880 | voi->ifp->mtu = OSPF_VL_MTU; | |
881 | voi->type = OSPF_IFTYPE_VIRTUALLINK; | |
882 | ||
883 | vlink_count++; | |
884 | if (IS_DEBUG_OSPF_EVENT) | |
885 | zlog_debug("ospf_vl_new(): Created name: %s", ifname); | |
886 | if (IS_DEBUG_OSPF_EVENT) | |
887 | zlog_debug("ospf_vl_new(): set if->name to %s", vi->name); | |
888 | ||
889 | area_id.s_addr = 0; | |
890 | area = ospf_area_get(ospf, area_id); | |
891 | voi->area = area; | |
892 | ||
893 | if (IS_DEBUG_OSPF_EVENT) | |
894 | zlog_debug( | |
895 | "ospf_vl_new(): set associated area to the backbone"); | |
896 | ||
897 | /* Add pseudo neighbor. */ | |
898 | ospf_nbr_self_reset(voi, voi->ospf->router_id); | |
899 | ||
900 | ospf_area_add_if(voi->area, voi); | |
901 | ||
d62a17ae | 902 | if (IS_DEBUG_OSPF_EVENT) |
903 | zlog_debug("ospf_vl_new(): Stop"); | |
904 | return voi; | |
718e3744 | 905 | } |
906 | ||
d62a17ae | 907 | static void ospf_vl_if_delete(struct ospf_vl_data *vl_data) |
718e3744 | 908 | { |
d62a17ae | 909 | vl_data->vl_oi->address->u.prefix4.s_addr = 0; |
910 | vl_data->vl_oi->address->prefixlen = 0; | |
911 | ospf_if_free(vl_data->vl_oi); | |
f609709a | 912 | if_delete(&vl_data->vl_oi->ifp); |
d62a17ae | 913 | vlink_count--; |
718e3744 | 914 | } |
915 | ||
19ce7d5e PG |
916 | /* for a defined area, count the number of configured vl |
917 | */ | |
918 | int ospf_vl_count(struct ospf *ospf, struct ospf_area *area) | |
919 | { | |
920 | int count = 0; | |
921 | struct ospf_vl_data *vl_data; | |
922 | struct listnode *node; | |
923 | ||
924 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
925 | if (area | |
926 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
927 | continue; | |
928 | count++; | |
929 | } | |
930 | return count; | |
931 | } | |
932 | ||
9c27ef9b PJ |
933 | /* Look up vl_data for given peer, optionally qualified to be in the |
934 | * specified area. NULL area returns first found.. | |
935 | */ | |
d62a17ae | 936 | struct ospf_vl_data *ospf_vl_lookup(struct ospf *ospf, struct ospf_area *area, |
937 | struct in_addr vl_peer) | |
718e3744 | 938 | { |
d62a17ae | 939 | struct ospf_vl_data *vl_data; |
940 | struct listnode *node; | |
941 | ||
942 | if (IS_DEBUG_OSPF_EVENT) { | |
943 | zlog_debug("%s: Looking for %s", __func__, inet_ntoa(vl_peer)); | |
944 | if (area) | |
945 | zlog_debug("%s: in area %s", __func__, | |
946 | inet_ntoa(area->area_id)); | |
947 | } | |
948 | ||
949 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
950 | if (IS_DEBUG_OSPF_EVENT) | |
951 | zlog_debug("%s: VL %s, peer %s", __func__, | |
952 | vl_data->vl_oi->ifp->name, | |
953 | inet_ntoa(vl_data->vl_peer)); | |
954 | ||
955 | if (area | |
956 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
957 | continue; | |
958 | ||
959 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &vl_peer)) | |
960 | return vl_data; | |
961 | } | |
962 | ||
963 | return NULL; | |
718e3744 | 964 | } |
965 | ||
d62a17ae | 966 | static void ospf_vl_shutdown(struct ospf_vl_data *vl_data) |
718e3744 | 967 | { |
d62a17ae | 968 | struct ospf_interface *oi; |
718e3744 | 969 | |
d62a17ae | 970 | if ((oi = vl_data->vl_oi) == NULL) |
971 | return; | |
718e3744 | 972 | |
d62a17ae | 973 | oi->address->u.prefix4.s_addr = 0; |
974 | oi->address->prefixlen = 0; | |
718e3744 | 975 | |
d62a17ae | 976 | UNSET_FLAG(oi->ifp->flags, IFF_UP); |
977 | /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */ | |
978 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); | |
718e3744 | 979 | } |
980 | ||
d62a17ae | 981 | void ospf_vl_add(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 982 | { |
d62a17ae | 983 | listnode_add(ospf->vlinks, vl_data); |
984 | hook_call(ospf_vl_add, vl_data); | |
718e3744 | 985 | } |
986 | ||
d62a17ae | 987 | void ospf_vl_delete(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 988 | { |
d62a17ae | 989 | ospf_vl_shutdown(vl_data); |
990 | ospf_vl_if_delete(vl_data); | |
718e3744 | 991 | |
d62a17ae | 992 | hook_call(ospf_vl_delete, vl_data); |
993 | listnode_delete(ospf->vlinks, vl_data); | |
718e3744 | 994 | |
d62a17ae | 995 | ospf_vl_data_free(vl_data); |
718e3744 | 996 | } |
997 | ||
d62a17ae | 998 | static int ospf_vl_set_params(struct ospf_vl_data *vl_data, struct vertex *v) |
718e3744 | 999 | { |
d62a17ae | 1000 | int changed = 0; |
1001 | struct ospf_interface *voi; | |
1002 | struct listnode *node; | |
1003 | struct vertex_parent *vp = NULL; | |
1004 | unsigned int i; | |
1005 | struct router_lsa *rl; | |
1006 | ||
1007 | voi = vl_data->vl_oi; | |
1008 | ||
1009 | if (voi->output_cost != v->distance) { | |
1010 | ||
1011 | voi->output_cost = v->distance; | |
1012 | changed = 1; | |
1013 | } | |
1014 | ||
1015 | for (ALL_LIST_ELEMENTS_RO(v->parents, node, vp)) { | |
1016 | vl_data->nexthop.oi = vp->nexthop->oi; | |
1017 | vl_data->nexthop.router = vp->nexthop->router; | |
1018 | ||
1019 | if (!IPV4_ADDR_SAME(&voi->address->u.prefix4, | |
1020 | &vl_data->nexthop.oi->address->u.prefix4)) | |
1021 | changed = 1; | |
1022 | ||
1023 | voi->address->u.prefix4 = | |
1024 | vl_data->nexthop.oi->address->u.prefix4; | |
1025 | voi->address->prefixlen = | |
1026 | vl_data->nexthop.oi->address->prefixlen; | |
1027 | ||
1028 | break; /* We take the first interface. */ | |
1029 | } | |
1030 | ||
1031 | rl = (struct router_lsa *)v->lsa; | |
1032 | ||
1033 | /* use SPF determined backlink index in struct vertex | |
1034 | * for virtual link destination address | |
1035 | */ | |
1036 | if (vp && vp->backlink >= 0) { | |
1037 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1038 | &rl->link[vp->backlink].link_data)) | |
1039 | changed = 1; | |
1040 | vl_data->peer_addr = rl->link[vp->backlink].link_data; | |
1041 | } else { | |
1042 | /* This is highly odd, there is no backlink index | |
1043 | * there should be due to the ospf_spf_has_link() check | |
1044 | * in SPF. Lets warn and try pick a link anyway. | |
1045 | */ | |
266469eb | 1046 | zlog_info("ospf_vl_set_params: No backlink for %s!", |
d62a17ae | 1047 | vl_data->vl_oi->ifp->name); |
1048 | for (i = 0; i < ntohs(rl->links); i++) { | |
1049 | switch (rl->link[i].type) { | |
1050 | case LSA_LINK_TYPE_VIRTUALLINK: | |
1051 | if (IS_DEBUG_OSPF_EVENT) | |
1052 | zlog_debug( | |
1053 | "found back link through VL"); | |
1054 | /* fallthru */ | |
1055 | case LSA_LINK_TYPE_TRANSIT: | |
1056 | case LSA_LINK_TYPE_POINTOPOINT: | |
1057 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1058 | &rl->link[i].link_data)) | |
1059 | changed = 1; | |
1060 | vl_data->peer_addr = rl->link[i].link_data; | |
1061 | } | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | if (IS_DEBUG_OSPF_EVENT) | |
1066 | zlog_debug("%s: %s peer address: %s, cost: %d,%schanged", | |
1067 | __func__, vl_data->vl_oi->ifp->name, | |
1068 | inet_ntoa(vl_data->peer_addr), voi->output_cost, | |
1069 | (changed ? " " : " un")); | |
1070 | ||
1071 | return changed; | |
718e3744 | 1072 | } |
1073 | ||
1074 | ||
d62a17ae | 1075 | void ospf_vl_up_check(struct ospf_area *area, struct in_addr rid, |
1076 | struct vertex *v) | |
718e3744 | 1077 | { |
d62a17ae | 1078 | struct ospf *ospf = area->ospf; |
1079 | struct listnode *node; | |
1080 | struct ospf_vl_data *vl_data; | |
1081 | struct ospf_interface *oi; | |
1082 | ||
1083 | if (IS_DEBUG_OSPF_EVENT) { | |
1084 | zlog_debug("ospf_vl_up_check(): Start"); | |
1085 | zlog_debug("ospf_vl_up_check(): Router ID is %s", | |
1086 | inet_ntoa(rid)); | |
1087 | zlog_debug("ospf_vl_up_check(): Area is %s", | |
1088 | inet_ntoa(area->area_id)); | |
718e3744 | 1089 | } |
1090 | ||
d62a17ae | 1091 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { |
1092 | if (IS_DEBUG_OSPF_EVENT) { | |
1093 | zlog_debug("%s: considering VL, %s in area %s", | |
1094 | __func__, vl_data->vl_oi->ifp->name, | |
1095 | inet_ntoa(vl_data->vl_area_id)); | |
1096 | zlog_debug("%s: peer ID: %s", __func__, | |
1097 | inet_ntoa(vl_data->vl_peer)); | |
1098 | } | |
1099 | ||
1100 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &rid) | |
1101 | && IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) { | |
1102 | oi = vl_data->vl_oi; | |
1103 | SET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1104 | ||
1105 | if (IS_DEBUG_OSPF_EVENT) | |
1106 | zlog_debug( | |
1107 | "ospf_vl_up_check(): this VL matched"); | |
1108 | ||
1109 | if (oi->state == ISM_Down) { | |
1110 | if (IS_DEBUG_OSPF_EVENT) | |
1111 | zlog_debug( | |
1112 | "ospf_vl_up_check(): VL is down, waking it up"); | |
1113 | SET_FLAG(oi->ifp->flags, IFF_UP); | |
1114 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceUp); | |
1115 | } | |
1116 | ||
1117 | if (ospf_vl_set_params(vl_data, v)) { | |
1118 | if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1119 | zlog_debug( | |
1120 | "ospf_vl_up_check: VL cost change," | |
1121 | " scheduling router lsa refresh"); | |
1122 | if (ospf->backbone) | |
1123 | ospf_router_lsa_update_area( | |
1124 | ospf->backbone); | |
1125 | else if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1126 | zlog_debug( | |
1127 | "ospf_vl_up_check: VL cost change, no backbone!"); | |
1128 | } | |
1129 | } | |
1130 | } | |
718e3744 | 1131 | } |
1132 | ||
d62a17ae | 1133 | void ospf_vl_unapprove(struct ospf *ospf) |
718e3744 | 1134 | { |
d62a17ae | 1135 | struct listnode *node; |
1136 | struct ospf_vl_data *vl_data; | |
718e3744 | 1137 | |
d62a17ae | 1138 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) |
1139 | UNSET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
718e3744 | 1140 | } |
1141 | ||
d62a17ae | 1142 | void ospf_vl_shut_unapproved(struct ospf *ospf) |
718e3744 | 1143 | { |
d62a17ae | 1144 | struct listnode *node, *nnode; |
1145 | struct ospf_vl_data *vl_data; | |
718e3744 | 1146 | |
d62a17ae | 1147 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) |
1148 | if (!CHECK_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED)) | |
1149 | ospf_vl_shutdown(vl_data); | |
718e3744 | 1150 | } |
1151 | ||
d62a17ae | 1152 | int ospf_full_virtual_nbrs(struct ospf_area *area) |
718e3744 | 1153 | { |
d62a17ae | 1154 | if (IS_DEBUG_OSPF_EVENT) { |
1155 | zlog_debug( | |
1156 | "counting fully adjacent virtual neighbors in area %s", | |
1157 | inet_ntoa(area->area_id)); | |
1158 | zlog_debug("there are %d of them", area->full_vls); | |
1159 | } | |
1160 | ||
1161 | return area->full_vls; | |
718e3744 | 1162 | } |
1163 | ||
d62a17ae | 1164 | int ospf_vls_in_area(struct ospf_area *area) |
718e3744 | 1165 | { |
d62a17ae | 1166 | struct listnode *node; |
1167 | struct ospf_vl_data *vl_data; | |
1168 | int c = 0; | |
718e3744 | 1169 | |
d62a17ae | 1170 | for (ALL_LIST_ELEMENTS_RO(area->ospf->vlinks, node, vl_data)) |
1171 | if (IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1172 | c++; | |
718e3744 | 1173 | |
d62a17ae | 1174 | return c; |
718e3744 | 1175 | } |
1176 | ||
6b0655a2 | 1177 | |
4d762f26 | 1178 | struct crypt_key *ospf_crypt_key_new(void) |
718e3744 | 1179 | { |
d62a17ae | 1180 | return XCALLOC(MTYPE_OSPF_CRYPT_KEY, sizeof(struct crypt_key)); |
718e3744 | 1181 | } |
1182 | ||
d62a17ae | 1183 | void ospf_crypt_key_add(struct list *crypt, struct crypt_key *ck) |
718e3744 | 1184 | { |
d62a17ae | 1185 | listnode_add(crypt, ck); |
718e3744 | 1186 | } |
1187 | ||
d7c0a89a | 1188 | struct crypt_key *ospf_crypt_key_lookup(struct list *auth_crypt, uint8_t key_id) |
718e3744 | 1189 | { |
d62a17ae | 1190 | struct listnode *node; |
1191 | struct crypt_key *ck; | |
718e3744 | 1192 | |
d62a17ae | 1193 | for (ALL_LIST_ELEMENTS_RO(auth_crypt, node, ck)) |
1194 | if (ck->key_id == key_id) | |
1195 | return ck; | |
718e3744 | 1196 | |
d62a17ae | 1197 | return NULL; |
718e3744 | 1198 | } |
1199 | ||
d7c0a89a | 1200 | int ospf_crypt_key_delete(struct list *auth_crypt, uint8_t key_id) |
718e3744 | 1201 | { |
d62a17ae | 1202 | struct listnode *node, *nnode; |
1203 | struct crypt_key *ck; | |
1204 | ||
1205 | for (ALL_LIST_ELEMENTS(auth_crypt, node, nnode, ck)) { | |
1206 | if (ck->key_id == key_id) { | |
1207 | listnode_delete(auth_crypt, ck); | |
1208 | XFREE(MTYPE_OSPF_CRYPT_KEY, ck); | |
1209 | return 1; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | return 0; | |
718e3744 | 1214 | } |
1215 | ||
d7c0a89a | 1216 | uint8_t ospf_default_iftype(struct interface *ifp) |
bc18d616 | 1217 | { |
d62a17ae | 1218 | if (if_is_pointopoint(ifp)) |
1219 | return OSPF_IFTYPE_POINTOPOINT; | |
0c74bbe0 | 1220 | else if (if_is_loopback(ifp) || if_is_vrf(ifp)) |
d62a17ae | 1221 | return OSPF_IFTYPE_LOOPBACK; |
1222 | else | |
1223 | return OSPF_IFTYPE_BROADCAST; | |
bc18d616 | 1224 | } |
1225 | ||
ef7bd2a3 DS |
1226 | void ospf_if_interface(struct interface *ifp) |
1227 | { | |
1228 | hook_call(ospf_if_update, ifp); | |
1229 | } | |
1230 | ||
138c5a74 DS |
1231 | static int ospf_ifp_create(struct interface *ifp) |
1232 | { | |
ef7bd2a3 DS |
1233 | struct ospf *ospf = NULL; |
1234 | ||
1235 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1236 | zlog_debug( | |
1237 | "Zebra: interface add %s vrf %s[%u] index %d flags %llx metric %d mtu %d speed %u", | |
1238 | ifp->name, ospf_vrf_id_to_name(ifp->vrf_id), | |
1239 | ifp->vrf_id, ifp->ifindex, | |
1240 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu, | |
1241 | ifp->speed); | |
1242 | ||
1243 | assert(ifp->info); | |
1244 | ||
1245 | if (IF_DEF_PARAMS(ifp) | |
1246 | && !OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS(ifp), type)) { | |
1247 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), type); | |
1248 | IF_DEF_PARAMS(ifp)->type = ospf_default_iftype(ifp); | |
1249 | } | |
1250 | ||
1251 | ospf = ospf_lookup_by_vrf_id(ifp->vrf_id); | |
1252 | if (!ospf) | |
1253 | return 0; | |
1254 | ||
1255 | ospf_if_recalculate_output_cost(ifp); | |
1256 | ||
1257 | ospf_if_update(ospf, ifp); | |
1258 | ||
1259 | hook_call(ospf_if_update, ifp); | |
1260 | ||
138c5a74 DS |
1261 | return 0; |
1262 | } | |
1263 | ||
1264 | static int ospf_ifp_up(struct interface *ifp) | |
1265 | { | |
ddbf3e60 DS |
1266 | struct ospf_interface *oi; |
1267 | struct route_node *rn; | |
85d25587 | 1268 | struct ospf_if_info *oii = ifp->info; |
ddbf3e60 | 1269 | |
85d25587 | 1270 | ospf_if_recalculate_output_cost(ifp); |
ddbf3e60 | 1271 | |
85d25587 | 1272 | if (oii && oii->curr_mtu != ifp->mtu) { |
ddbf3e60 DS |
1273 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) |
1274 | zlog_debug( | |
85d25587 DS |
1275 | "Zebra: Interface[%s] MTU change %u -> %u.", |
1276 | ifp->name, oii->curr_mtu, ifp->mtu); | |
ddbf3e60 | 1277 | |
85d25587 DS |
1278 | oii->curr_mtu = ifp->mtu; |
1279 | /* Must reset the interface (simulate down/up) when MTU | |
1280 | * changes. */ | |
1281 | ospf_if_reset(ifp); | |
ddbf3e60 | 1282 | |
ddbf3e60 DS |
1283 | return 0; |
1284 | } | |
1285 | ||
1286 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1287 | zlog_debug("Zebra: Interface[%s] state change to up.", | |
1288 | ifp->name); | |
1289 | ||
1290 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
1291 | if ((oi = rn->info) == NULL) | |
1292 | continue; | |
1293 | ||
1294 | ospf_if_up(oi); | |
1295 | } | |
1296 | ||
138c5a74 DS |
1297 | return 0; |
1298 | } | |
1299 | ||
1300 | static int ospf_ifp_down(struct interface *ifp) | |
1301 | { | |
b0b69e59 DS |
1302 | struct ospf_interface *oi; |
1303 | struct route_node *node; | |
1304 | ||
1305 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1306 | zlog_debug("Zebra: Interface[%s] state change to down.", | |
1307 | ifp->name); | |
1308 | ||
1309 | for (node = route_top(IF_OIFS(ifp)); node; node = route_next(node)) { | |
1310 | if ((oi = node->info) == NULL) | |
1311 | continue; | |
1312 | ospf_if_down(oi); | |
1313 | } | |
1314 | ||
138c5a74 DS |
1315 | return 0; |
1316 | } | |
1317 | ||
1318 | static int ospf_ifp_destroy(struct interface *ifp) | |
1319 | { | |
3c3c3252 DS |
1320 | struct route_node *rn; |
1321 | ||
1322 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) | |
1323 | zlog_debug( | |
1324 | "Zebra: interface delete %s vrf %s[%u] index %d flags %llx metric %d mtu %d", | |
1325 | ifp->name, ospf_vrf_id_to_name(ifp->vrf_id), | |
1326 | ifp->vrf_id, ifp->ifindex, | |
1327 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu); | |
1328 | ||
1329 | hook_call(ospf_if_delete, ifp); | |
1330 | ||
1331 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) | |
1332 | if (rn->info) | |
1333 | ospf_if_free((struct ospf_interface *)rn->info); | |
1334 | ||
138c5a74 DS |
1335 | return 0; |
1336 | } | |
1337 | ||
4d762f26 | 1338 | void ospf_if_init(void) |
718e3744 | 1339 | { |
138c5a74 DS |
1340 | if_zapi_callbacks(ospf_ifp_create, ospf_ifp_up, |
1341 | ospf_ifp_down, ospf_ifp_destroy); | |
1342 | ||
d62a17ae | 1343 | /* Initialize Zebra interface data structure. */ |
ce19a04a DL |
1344 | hook_register_prio(if_add, 0, ospf_if_new_hook); |
1345 | hook_register_prio(if_del, 0, ospf_if_delete_hook); | |
718e3744 | 1346 | } |