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1 | /* OSPF version 2 daemon program. | |
2 | * Copyright (C) 1999, 2000 Toshiaki Takada | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "thread.h" | |
24 | #include "vty.h" | |
25 | #include "command.h" | |
26 | #include "linklist.h" | |
27 | #include "prefix.h" | |
28 | #include "table.h" | |
29 | #include "if.h" | |
30 | #include "memory.h" | |
31 | #include "stream.h" | |
32 | #include "log.h" | |
33 | #include "sockunion.h" /* for inet_aton () */ | |
34 | #include "zclient.h" | |
35 | #include "routemap.h" | |
36 | #include "plist.h" | |
37 | #include "sockopt.h" | |
38 | #include "bfd.h" | |
39 | #include "libfrr.h" | |
40 | #include "defaults.h" | |
41 | #include "lib_errors.h" | |
42 | #include "ldp_sync.h" | |
43 | ||
44 | #include "ospfd/ospfd.h" | |
45 | #include "ospfd/ospf_bfd.h" | |
46 | #include "ospfd/ospf_network.h" | |
47 | #include "ospfd/ospf_interface.h" | |
48 | #include "ospfd/ospf_ism.h" | |
49 | #include "ospfd/ospf_asbr.h" | |
50 | #include "ospfd/ospf_lsa.h" | |
51 | #include "ospfd/ospf_lsdb.h" | |
52 | #include "ospfd/ospf_neighbor.h" | |
53 | #include "ospfd/ospf_nsm.h" | |
54 | #include "ospfd/ospf_spf.h" | |
55 | #include "ospfd/ospf_packet.h" | |
56 | #include "ospfd/ospf_dump.h" | |
57 | #include "ospfd/ospf_route.h" | |
58 | #include "ospfd/ospf_zebra.h" | |
59 | #include "ospfd/ospf_abr.h" | |
60 | #include "ospfd/ospf_flood.h" | |
61 | #include "ospfd/ospf_ase.h" | |
62 | #include "ospfd/ospf_ldp_sync.h" | |
63 | #include "ospfd/ospf_gr.h" | |
64 | #include "ospfd/ospf_apiserver.h" | |
65 | ||
66 | ||
67 | DEFINE_QOBJ_TYPE(ospf); | |
68 | ||
69 | /* OSPF process wide configuration. */ | |
70 | static struct ospf_master ospf_master; | |
71 | ||
72 | /* OSPF process wide configuration pointer to export. */ | |
73 | struct ospf_master *om; | |
74 | ||
75 | unsigned short ospf_instance; | |
76 | ||
77 | extern struct zclient *zclient; | |
78 | ||
79 | ||
80 | static void ospf_remove_vls_through_area(struct ospf *, struct ospf_area *); | |
81 | static void ospf_network_free(struct ospf *, struct ospf_network *); | |
82 | static void ospf_area_free(struct ospf_area *); | |
83 | static void ospf_network_run(struct prefix *, struct ospf_area *); | |
84 | static void ospf_network_run_interface(struct ospf *, struct interface *, | |
85 | struct prefix *, struct ospf_area *); | |
86 | static void ospf_network_run_subnet(struct ospf *, struct connected *, | |
87 | struct prefix *, struct ospf_area *); | |
88 | static int ospf_network_match_iface(const struct connected *, | |
89 | const struct prefix *); | |
90 | static void ospf_finish_final(struct ospf *); | |
91 | ||
92 | #define OSPF_EXTERNAL_LSA_ORIGINATE_DELAY 1 | |
93 | ||
94 | int p_spaces_compare_func(const struct p_space *a, const struct p_space *b) | |
95 | { | |
96 | if (a->protected_resource->type == OSPF_TI_LFA_LINK_PROTECTION | |
97 | && b->protected_resource->type == OSPF_TI_LFA_LINK_PROTECTION) | |
98 | return (a->protected_resource->link->link_id.s_addr | |
99 | - b->protected_resource->link->link_id.s_addr); | |
100 | ||
101 | if (a->protected_resource->type == OSPF_TI_LFA_NODE_PROTECTION | |
102 | && b->protected_resource->type == OSPF_TI_LFA_NODE_PROTECTION) | |
103 | return (a->protected_resource->router_id.s_addr | |
104 | - b->protected_resource->router_id.s_addr); | |
105 | ||
106 | /* This should not happen */ | |
107 | return 0; | |
108 | } | |
109 | ||
110 | int q_spaces_compare_func(const struct q_space *a, const struct q_space *b) | |
111 | { | |
112 | return (a->root->id.s_addr - b->root->id.s_addr); | |
113 | } | |
114 | ||
115 | DECLARE_RBTREE_UNIQ(p_spaces, struct p_space, p_spaces_item, | |
116 | p_spaces_compare_func); | |
117 | ||
118 | void ospf_process_refresh_data(struct ospf *ospf, bool reset) | |
119 | { | |
120 | struct vrf *vrf = vrf_lookup_by_id(ospf->vrf_id); | |
121 | struct in_addr router_id, router_id_old; | |
122 | struct ospf_interface *oi; | |
123 | struct interface *ifp; | |
124 | struct listnode *node, *nnode; | |
125 | struct ospf_area *area; | |
126 | bool rid_change = false; | |
127 | ||
128 | if (!ospf->oi_running) { | |
129 | if (IS_DEBUG_OSPF_EVENT) | |
130 | zlog_debug( | |
131 | "Router ospf not configured -- Router-ID update postponed"); | |
132 | return; | |
133 | } | |
134 | ||
135 | if (IS_DEBUG_OSPF_EVENT) | |
136 | zlog_debug("Router-ID[OLD:%pI4]: Update", | |
137 | &ospf->router_id); | |
138 | ||
139 | router_id_old = ospf->router_id; | |
140 | ||
141 | /* Select the router ID based on these priorities: | |
142 | 1. Statically assigned router ID is always the first choice. | |
143 | 2. If there is no statically assigned router ID, then try to stick | |
144 | with the most recent value, since changing router ID's is very | |
145 | disruptive. | |
146 | 3. Last choice: just go with whatever the zebra daemon recommends. | |
147 | */ | |
148 | if (ospf->router_id_static.s_addr != INADDR_ANY) | |
149 | router_id = ospf->router_id_static; | |
150 | else if (ospf->router_id.s_addr != INADDR_ANY) | |
151 | router_id = ospf->router_id; | |
152 | else | |
153 | router_id = ospf->router_id_zebra; | |
154 | ||
155 | if (IS_DEBUG_OSPF_EVENT) | |
156 | zlog_debug("Router-ID[OLD:%pI4]: Update to %pI4", | |
157 | &ospf->router_id, &router_id); | |
158 | ||
159 | rid_change = !(IPV4_ADDR_SAME(&router_id_old, &router_id)); | |
160 | if (rid_change || (reset)) { | |
161 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
162 | /* Some nbrs are identified by router_id, these needs | |
163 | * to be rebuilt. Possible optimization would be to do | |
164 | * oi->nbr_self->router_id = router_id for | |
165 | * !(virtual | ptop) links | |
166 | */ | |
167 | ospf_nbr_self_reset(oi, router_id); | |
168 | ||
169 | /* | |
170 | * If the old router id was not set, but now it | |
171 | * is and the interface is operative and the | |
172 | * state is ISM_Down we should kick the state | |
173 | * machine as that we processed the interfaces | |
174 | * based upon the network statement( or intf config ) | |
175 | * but could not start it at that time. | |
176 | */ | |
177 | if (if_is_operative(oi->ifp) && oi->state == ISM_Down | |
178 | && router_id_old.s_addr == INADDR_ANY) | |
179 | ospf_if_up(oi); | |
180 | } | |
181 | ||
182 | /* Flush (inline) all the self originated LSAs */ | |
183 | ospf_flush_self_originated_lsas_now(ospf); | |
184 | ||
185 | ospf->router_id = router_id; | |
186 | if (IS_DEBUG_OSPF_EVENT) | |
187 | zlog_debug("Router-ID[NEW:%pI4]: Update", | |
188 | &ospf->router_id); | |
189 | ||
190 | /* Flush (inline) all external LSAs which now match the new | |
191 | router-id, | |
192 | need to adjust the OSPF_LSA_SELF flag, so the flush doesn't | |
193 | hit | |
194 | asserts in ospf_refresher_unregister_lsa(). This step is | |
195 | needed | |
196 | because the current frr code does look-up for | |
197 | self-originated LSAs | |
198 | based on the self router-id alone but expects OSPF_LSA_SELF | |
199 | to be | |
200 | properly set */ | |
201 | if (ospf->lsdb) { | |
202 | struct route_node *rn; | |
203 | struct ospf_lsa *lsa; | |
204 | ||
205 | LSDB_LOOP (EXTERNAL_LSDB(ospf), rn, lsa) { | |
206 | /* AdvRouter and Router ID is the same. */ | |
207 | if (IPV4_ADDR_SAME(&lsa->data->adv_router, | |
208 | &ospf->router_id) && rid_change) { | |
209 | SET_FLAG(lsa->flags, | |
210 | OSPF_LSA_SELF_CHECKED); | |
211 | SET_FLAG(lsa->flags, OSPF_LSA_SELF); | |
212 | ospf_lsa_flush_schedule(ospf, lsa); | |
213 | } | |
214 | /* The above flush will send immediately | |
215 | * So discard the LSA to originate new | |
216 | */ | |
217 | ospf_discard_from_db(ospf, ospf->lsdb, lsa); | |
218 | } | |
219 | ||
220 | LSDB_LOOP (OPAQUE_AS_LSDB(ospf), rn, lsa) | |
221 | ospf_discard_from_db(ospf, ospf->lsdb, lsa); | |
222 | ||
223 | ospf_lsdb_delete_all(ospf->lsdb); | |
224 | } | |
225 | ||
226 | /* Since the LSAs are deleted, need reset the aggr flag */ | |
227 | ospf_unset_all_aggr_flag(ospf); | |
228 | ||
229 | /* Delete the LSDB */ | |
230 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) | |
231 | ospf_area_lsdb_discard_delete(area); | |
232 | ||
233 | /* update router-lsa's for each area */ | |
234 | ospf_router_lsa_update(ospf); | |
235 | ||
236 | /* update ospf_interface's */ | |
237 | FOR_ALL_INTERFACES (vrf, ifp) { | |
238 | if (reset) | |
239 | ospf_if_reset(ifp); | |
240 | else | |
241 | ospf_if_update(ospf, ifp); | |
242 | } | |
243 | ||
244 | ospf_external_lsa_rid_change(ospf); | |
245 | ||
246 | #ifdef SUPPORT_OSPF_API | |
247 | ospf_apiserver_clients_notify_router_id_change(router_id); | |
248 | #endif | |
249 | } | |
250 | ||
251 | ospf->inst_shutdown = 0; | |
252 | } | |
253 | ||
254 | void ospf_router_id_update(struct ospf *ospf) | |
255 | { | |
256 | ospf_process_refresh_data(ospf, false); | |
257 | } | |
258 | ||
259 | void ospf_process_reset(struct ospf *ospf) | |
260 | { | |
261 | ospf_process_refresh_data(ospf, true); | |
262 | } | |
263 | ||
264 | void ospf_neighbor_reset(struct ospf *ospf, struct in_addr nbr_id, | |
265 | const char *nbr_str) | |
266 | { | |
267 | struct route_node *rn; | |
268 | struct ospf_neighbor *nbr; | |
269 | struct ospf_interface *oi; | |
270 | struct listnode *node; | |
271 | ||
272 | /* Clear only a particular nbr with nbr router id as nbr_id */ | |
273 | if (nbr_str != NULL) { | |
274 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
275 | nbr = ospf_nbr_lookup_by_routerid(oi->nbrs, &nbr_id); | |
276 | if (nbr) | |
277 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
278 | } | |
279 | return; | |
280 | } | |
281 | ||
282 | /* send Neighbor event KillNbr to all associated neighbors. */ | |
283 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
284 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) { | |
285 | nbr = rn->info; | |
286 | if (nbr && (nbr != oi->nbr_self)) | |
287 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
288 | } | |
289 | } | |
290 | } | |
291 | ||
292 | /* For OSPF area sort by area id. */ | |
293 | static int ospf_area_id_cmp(struct ospf_area *a1, struct ospf_area *a2) | |
294 | { | |
295 | if (ntohl(a1->area_id.s_addr) > ntohl(a2->area_id.s_addr)) | |
296 | return 1; | |
297 | if (ntohl(a1->area_id.s_addr) < ntohl(a2->area_id.s_addr)) | |
298 | return -1; | |
299 | return 0; | |
300 | } | |
301 | ||
302 | static void ospf_add(struct ospf *ospf) | |
303 | { | |
304 | listnode_add(om->ospf, ospf); | |
305 | } | |
306 | ||
307 | static void ospf_delete(struct ospf *ospf) | |
308 | { | |
309 | listnode_delete(om->ospf, ospf); | |
310 | } | |
311 | ||
312 | struct ospf *ospf_new_alloc(unsigned short instance, const char *name) | |
313 | { | |
314 | int i; | |
315 | struct vrf *vrf = NULL; | |
316 | ||
317 | struct ospf *new = XCALLOC(MTYPE_OSPF_TOP, sizeof(struct ospf)); | |
318 | ||
319 | new->instance = instance; | |
320 | new->router_id.s_addr = htonl(0); | |
321 | new->router_id_static.s_addr = htonl(0); | |
322 | ||
323 | vrf = vrf_lookup_by_name(name); | |
324 | if (vrf) | |
325 | new->vrf_id = vrf->vrf_id; | |
326 | else | |
327 | new->vrf_id = VRF_UNKNOWN; | |
328 | ||
329 | /* Freed in ospf_finish_final */ | |
330 | new->name = XSTRDUP(MTYPE_OSPF_TOP, name); | |
331 | if (IS_DEBUG_OSPF_EVENT) | |
332 | zlog_debug( | |
333 | "%s: Create new ospf instance with vrf_name %s vrf_id %u", | |
334 | __func__, name, new->vrf_id); | |
335 | ||
336 | if (vrf) | |
337 | ospf_vrf_link(new, vrf); | |
338 | ||
339 | ospf_zebra_vrf_register(new); | |
340 | ||
341 | new->abr_type = OSPF_ABR_DEFAULT; | |
342 | new->oiflist = list_new(); | |
343 | new->vlinks = list_new(); | |
344 | new->areas = list_new(); | |
345 | new->areas->cmp = (int (*)(void *, void *))ospf_area_id_cmp; | |
346 | new->networks = route_table_init(); | |
347 | new->nbr_nbma = route_table_init(); | |
348 | ||
349 | new->lsdb = ospf_lsdb_new(); | |
350 | ||
351 | new->default_originate = DEFAULT_ORIGINATE_NONE; | |
352 | ||
353 | new->passive_interface_default = OSPF_IF_ACTIVE; | |
354 | ||
355 | new->new_external_route = route_table_init(); | |
356 | new->old_external_route = route_table_init(); | |
357 | new->external_lsas = route_table_init(); | |
358 | ||
359 | new->stub_router_startup_time = OSPF_STUB_ROUTER_UNCONFIGURED; | |
360 | new->stub_router_shutdown_time = OSPF_STUB_ROUTER_UNCONFIGURED; | |
361 | new->stub_router_admin_set = OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET; | |
362 | ||
363 | /* Distribute parameter init. */ | |
364 | for (i = 0; i <= ZEBRA_ROUTE_MAX; i++) { | |
365 | new->dtag[i] = 0; | |
366 | } | |
367 | new->default_metric = -1; | |
368 | new->ref_bandwidth = OSPF_DEFAULT_REF_BANDWIDTH; | |
369 | ||
370 | /* LSA timers */ | |
371 | new->min_ls_interval = OSPF_MIN_LS_INTERVAL; | |
372 | new->min_ls_arrival = OSPF_MIN_LS_ARRIVAL; | |
373 | ||
374 | /* SPF timer value init. */ | |
375 | new->spf_delay = OSPF_SPF_DELAY_DEFAULT; | |
376 | new->spf_holdtime = OSPF_SPF_HOLDTIME_DEFAULT; | |
377 | new->spf_max_holdtime = OSPF_SPF_MAX_HOLDTIME_DEFAULT; | |
378 | new->spf_hold_multiplier = 1; | |
379 | ||
380 | /* MaxAge init. */ | |
381 | new->maxage_delay = OSPF_LSA_MAXAGE_REMOVE_DELAY_DEFAULT; | |
382 | new->maxage_lsa = route_table_init(); | |
383 | new->t_maxage_walker = NULL; | |
384 | thread_add_timer(master, ospf_lsa_maxage_walker, new, | |
385 | OSPF_LSA_MAXAGE_CHECK_INTERVAL, &new->t_maxage_walker); | |
386 | ||
387 | /* Max paths initialization */ | |
388 | new->max_multipath = MULTIPATH_NUM; | |
389 | ||
390 | /* Distance table init. */ | |
391 | new->distance_table = route_table_init(); | |
392 | ||
393 | new->lsa_refresh_queue.index = 0; | |
394 | new->lsa_refresh_interval = OSPF_LSA_REFRESH_INTERVAL_DEFAULT; | |
395 | new->t_lsa_refresher = NULL; | |
396 | thread_add_timer(master, ospf_lsa_refresh_walker, new, | |
397 | new->lsa_refresh_interval, &new->t_lsa_refresher); | |
398 | new->lsa_refresher_started = monotime(NULL); | |
399 | ||
400 | new->ibuf = stream_new(OSPF_MAX_PACKET_SIZE + 1); | |
401 | ||
402 | new->t_read = NULL; | |
403 | new->oi_write_q = list_new(); | |
404 | new->write_oi_count = OSPF_WRITE_INTERFACE_COUNT_DEFAULT; | |
405 | ||
406 | new->proactive_arp = OSPF_PROACTIVE_ARP_DEFAULT; | |
407 | ||
408 | ospf_gr_helper_instance_init(new); | |
409 | ||
410 | ospf_asbr_external_aggregator_init(new); | |
411 | ||
412 | ospf_opaque_type11_lsa_init(new); | |
413 | ||
414 | QOBJ_REG(new, ospf); | |
415 | ||
416 | new->fd = -1; | |
417 | ||
418 | return new; | |
419 | } | |
420 | ||
421 | /* Allocate new ospf structure. */ | |
422 | static struct ospf *ospf_new(unsigned short instance, const char *name) | |
423 | { | |
424 | struct ospf *new; | |
425 | ||
426 | new = ospf_new_alloc(instance, name); | |
427 | ospf_add(new); | |
428 | ||
429 | if (new->vrf_id == VRF_UNKNOWN) | |
430 | return new; | |
431 | ||
432 | if ((ospf_sock_init(new)) < 0) { | |
433 | flog_err(EC_LIB_SOCKET, | |
434 | "%s: ospf_sock_init is unable to open a socket", | |
435 | __func__); | |
436 | return new; | |
437 | } | |
438 | ||
439 | thread_add_read(master, ospf_read, new, new->fd, &new->t_read); | |
440 | ||
441 | new->oi_running = 1; | |
442 | ospf_router_id_update(new); | |
443 | ||
444 | /* | |
445 | * Read from non-volatile memory whether this instance is performing a | |
446 | * graceful restart or not. | |
447 | */ | |
448 | ospf_gr_nvm_read(new); | |
449 | ||
450 | return new; | |
451 | } | |
452 | ||
453 | struct ospf *ospf_lookup_instance(unsigned short instance) | |
454 | { | |
455 | struct ospf *ospf; | |
456 | struct listnode *node, *nnode; | |
457 | ||
458 | if (listcount(om->ospf) == 0) | |
459 | return NULL; | |
460 | ||
461 | for (ALL_LIST_ELEMENTS(om->ospf, node, nnode, ospf)) | |
462 | if ((ospf->instance == 0 && instance == 0) | |
463 | || (ospf->instance && instance | |
464 | && ospf->instance == instance)) | |
465 | return ospf; | |
466 | ||
467 | return NULL; | |
468 | } | |
469 | ||
470 | static int ospf_is_ready(struct ospf *ospf) | |
471 | { | |
472 | /* OSPF must be on and Router-ID must be configured. */ | |
473 | if (!ospf || ospf->router_id.s_addr == INADDR_ANY) | |
474 | return 0; | |
475 | ||
476 | return 1; | |
477 | } | |
478 | ||
479 | struct ospf *ospf_lookup_by_inst_name(unsigned short instance, const char *name) | |
480 | { | |
481 | struct ospf *ospf = NULL; | |
482 | struct listnode *node, *nnode; | |
483 | ||
484 | for (ALL_LIST_ELEMENTS(om->ospf, node, nnode, ospf)) { | |
485 | if ((ospf->instance == instance) | |
486 | && ((ospf->name == NULL && name == NULL) | |
487 | || (ospf->name && name | |
488 | && strcmp(ospf->name, name) == 0))) | |
489 | return ospf; | |
490 | } | |
491 | return NULL; | |
492 | } | |
493 | ||
494 | struct ospf *ospf_lookup(unsigned short instance, const char *name) | |
495 | { | |
496 | struct ospf *ospf; | |
497 | ||
498 | if (ospf_instance) { | |
499 | ospf = ospf_lookup_instance(instance); | |
500 | } else { | |
501 | ospf = ospf_lookup_by_inst_name(instance, name); | |
502 | } | |
503 | ||
504 | return ospf; | |
505 | } | |
506 | ||
507 | struct ospf *ospf_get(unsigned short instance, const char *name, bool *created) | |
508 | { | |
509 | struct ospf *ospf; | |
510 | ||
511 | ospf = ospf_lookup(instance, name); | |
512 | ||
513 | *created = (ospf == NULL); | |
514 | if (ospf == NULL) | |
515 | ospf = ospf_new(instance, name); | |
516 | ||
517 | return ospf; | |
518 | } | |
519 | ||
520 | struct ospf *ospf_lookup_by_vrf_id(vrf_id_t vrf_id) | |
521 | { | |
522 | struct vrf *vrf = NULL; | |
523 | ||
524 | vrf = vrf_lookup_by_id(vrf_id); | |
525 | if (!vrf) | |
526 | return NULL; | |
527 | return (vrf->info) ? (struct ospf *)vrf->info : NULL; | |
528 | } | |
529 | ||
530 | uint32_t ospf_count_area_params(struct ospf *ospf) | |
531 | { | |
532 | struct vrf *vrf; | |
533 | struct interface *ifp; | |
534 | uint32_t count = 0; | |
535 | ||
536 | if (ospf->vrf_id != VRF_UNKNOWN) { | |
537 | vrf = vrf_lookup_by_id(ospf->vrf_id); | |
538 | ||
539 | FOR_ALL_INTERFACES (vrf, ifp) { | |
540 | count += ospf_if_count_area_params(ifp); | |
541 | } | |
542 | } | |
543 | ||
544 | return count; | |
545 | } | |
546 | ||
547 | /* It should only be used when processing incoming info update from zebra. | |
548 | * Other situations, it is not sufficient to lookup the ospf instance by | |
549 | * vrf_name only without using the instance number. | |
550 | */ | |
551 | static struct ospf *ospf_lookup_by_name(const char *vrf_name) | |
552 | { | |
553 | struct ospf *ospf = NULL; | |
554 | struct listnode *node, *nnode; | |
555 | ||
556 | for (ALL_LIST_ELEMENTS(om->ospf, node, nnode, ospf)) | |
557 | if ((ospf->name == NULL && vrf_name == NULL) | |
558 | || (ospf->name && vrf_name | |
559 | && strcmp(ospf->name, vrf_name) == 0)) | |
560 | return ospf; | |
561 | return NULL; | |
562 | } | |
563 | ||
564 | /* Handle the second half of deferred shutdown. This is called either | |
565 | * from the deferred-shutdown timer thread, or directly through | |
566 | * ospf_deferred_shutdown_check. | |
567 | * | |
568 | * Function is to cleanup G-R state, if required then call ospf_finish_final | |
569 | * to complete shutdown of this ospf instance. Possibly exit if the | |
570 | * whole process is being shutdown and this was the last OSPF instance. | |
571 | */ | |
572 | static void ospf_deferred_shutdown_finish(struct ospf *ospf) | |
573 | { | |
574 | ospf->stub_router_shutdown_time = OSPF_STUB_ROUTER_UNCONFIGURED; | |
575 | OSPF_TIMER_OFF(ospf->t_deferred_shutdown); | |
576 | ||
577 | ospf_finish_final(ospf); | |
578 | ||
579 | /* *ospf is now invalid */ | |
580 | ||
581 | /* ospfd being shut-down? If so, was this the last ospf instance? */ | |
582 | if (CHECK_FLAG(om->options, OSPF_MASTER_SHUTDOWN) | |
583 | && (listcount(om->ospf) == 0)) { | |
584 | frr_fini(); | |
585 | exit(0); | |
586 | } | |
587 | ||
588 | return; | |
589 | } | |
590 | ||
591 | /* Timer thread for G-R */ | |
592 | static void ospf_deferred_shutdown_timer(struct thread *t) | |
593 | { | |
594 | struct ospf *ospf = THREAD_ARG(t); | |
595 | ||
596 | ospf_deferred_shutdown_finish(ospf); | |
597 | } | |
598 | ||
599 | /* Check whether deferred-shutdown must be scheduled, otherwise call | |
600 | * down directly into second-half of instance shutdown. | |
601 | */ | |
602 | static void ospf_deferred_shutdown_check(struct ospf *ospf) | |
603 | { | |
604 | unsigned long timeout; | |
605 | struct listnode *ln; | |
606 | struct ospf_area *area; | |
607 | ||
608 | /* deferred shutdown already running? */ | |
609 | if (ospf->t_deferred_shutdown) | |
610 | return; | |
611 | ||
612 | /* Should we try push out max-metric LSAs? */ | |
613 | if (ospf->stub_router_shutdown_time != OSPF_STUB_ROUTER_UNCONFIGURED) { | |
614 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, ln, area)) { | |
615 | SET_FLAG(area->stub_router_state, | |
616 | OSPF_AREA_ADMIN_STUB_ROUTED); | |
617 | ||
618 | if (!CHECK_FLAG(area->stub_router_state, | |
619 | OSPF_AREA_IS_STUB_ROUTED)) | |
620 | ospf_router_lsa_update_area(area); | |
621 | } | |
622 | timeout = ospf->stub_router_shutdown_time; | |
623 | } else { | |
624 | /* No timer needed */ | |
625 | ospf_deferred_shutdown_finish(ospf); | |
626 | return; | |
627 | } | |
628 | ||
629 | OSPF_TIMER_ON(ospf->t_deferred_shutdown, ospf_deferred_shutdown_timer, | |
630 | timeout); | |
631 | return; | |
632 | } | |
633 | ||
634 | /* Shut down the entire process */ | |
635 | void ospf_terminate(void) | |
636 | { | |
637 | struct ospf *ospf; | |
638 | struct listnode *node, *nnode; | |
639 | ||
640 | /* shutdown already in progress */ | |
641 | if (CHECK_FLAG(om->options, OSPF_MASTER_SHUTDOWN)) | |
642 | return; | |
643 | ||
644 | SET_FLAG(om->options, OSPF_MASTER_SHUTDOWN); | |
645 | ||
646 | /* Skip some steps if OSPF not actually running */ | |
647 | if (listcount(om->ospf) == 0) | |
648 | goto done; | |
649 | ||
650 | for (ALL_LIST_ELEMENTS(om->ospf, node, nnode, ospf)) | |
651 | ospf_finish(ospf); | |
652 | ||
653 | /* Cleanup GR */ | |
654 | ospf_gr_helper_stop(); | |
655 | ||
656 | /* Cleanup route maps */ | |
657 | route_map_finish(); | |
658 | ||
659 | /* reverse prefix_list_init */ | |
660 | prefix_list_add_hook(NULL); | |
661 | prefix_list_delete_hook(NULL); | |
662 | prefix_list_reset(); | |
663 | ||
664 | /* Cleanup vrf info */ | |
665 | ospf_vrf_terminate(); | |
666 | ||
667 | /* Deliberately go back up, hopefully to thread scheduler, as | |
668 | * One or more ospf_finish()'s may have deferred shutdown to a timer | |
669 | * thread | |
670 | */ | |
671 | zclient_stop(zclient); | |
672 | zclient_free(zclient); | |
673 | ||
674 | done: | |
675 | frr_fini(); | |
676 | } | |
677 | ||
678 | void ospf_finish(struct ospf *ospf) | |
679 | { | |
680 | /* let deferred shutdown decide */ | |
681 | ospf_deferred_shutdown_check(ospf); | |
682 | ||
683 | /* if ospf_deferred_shutdown returns, then ospf_finish_final is | |
684 | * deferred to expiry of G-S timer thread. Return back up, hopefully | |
685 | * to thread scheduler. | |
686 | */ | |
687 | return; | |
688 | } | |
689 | ||
690 | /* Final cleanup of ospf instance */ | |
691 | static void ospf_finish_final(struct ospf *ospf) | |
692 | { | |
693 | struct vrf *vrf = vrf_lookup_by_id(ospf->vrf_id); | |
694 | struct route_node *rn; | |
695 | struct ospf_nbr_nbma *nbr_nbma; | |
696 | struct ospf_lsa *lsa; | |
697 | struct ospf_interface *oi; | |
698 | struct ospf_area *area; | |
699 | struct ospf_vl_data *vl_data; | |
700 | struct listnode *node, *nnode; | |
701 | struct ospf_redist *red; | |
702 | int i; | |
703 | ||
704 | QOBJ_UNREG(ospf); | |
705 | ||
706 | ospf_opaque_type11_lsa_term(ospf); | |
707 | ||
708 | ospf_opaque_finish(); | |
709 | ||
710 | if (!ospf->gr_info.prepare_in_progress) | |
711 | ospf_flush_self_originated_lsas_now(ospf); | |
712 | ||
713 | /* Unregister redistribution */ | |
714 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) { | |
715 | struct list *red_list; | |
716 | ||
717 | red_list = ospf->redist[i]; | |
718 | if (!red_list) | |
719 | continue; | |
720 | ||
721 | for (ALL_LIST_ELEMENTS(red_list, node, nnode, red)) { | |
722 | ospf_redistribute_unset(ospf, i, red->instance); | |
723 | ospf_redist_del(ospf, i, red->instance); | |
724 | } | |
725 | } | |
726 | red = ospf_redist_lookup(ospf, DEFAULT_ROUTE, 0); | |
727 | if (red) { | |
728 | ospf_routemap_unset(red); | |
729 | ospf_redist_del(ospf, DEFAULT_ROUTE, 0); | |
730 | ospf_redistribute_default_set(ospf, DEFAULT_ORIGINATE_NONE, 0, 0); | |
731 | } | |
732 | ||
733 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) | |
734 | ospf_remove_vls_through_area(ospf, area); | |
735 | ||
736 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) | |
737 | ospf_vl_delete(ospf, vl_data); | |
738 | ||
739 | list_delete(&ospf->vlinks); | |
740 | ||
741 | /* shutdown LDP-Sync */ | |
742 | if (ospf->vrf_id == VRF_DEFAULT) | |
743 | ospf_ldp_sync_gbl_exit(ospf, true); | |
744 | ||
745 | /* Reset interface. */ | |
746 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) | |
747 | ospf_if_free(oi); | |
748 | list_delete(&ospf->oiflist); | |
749 | ospf->oi_running = 0; | |
750 | ||
751 | /* De-Register VRF */ | |
752 | ospf_zebra_vrf_deregister(ospf); | |
753 | ||
754 | /* Clear static neighbors */ | |
755 | for (rn = route_top(ospf->nbr_nbma); rn; rn = route_next(rn)) | |
756 | if ((nbr_nbma = rn->info)) { | |
757 | OSPF_POLL_TIMER_OFF(nbr_nbma->t_poll); | |
758 | ||
759 | if (nbr_nbma->nbr) { | |
760 | nbr_nbma->nbr->nbr_nbma = NULL; | |
761 | nbr_nbma->nbr = NULL; | |
762 | } | |
763 | ||
764 | if (nbr_nbma->oi) { | |
765 | listnode_delete(nbr_nbma->oi->nbr_nbma, | |
766 | nbr_nbma); | |
767 | nbr_nbma->oi = NULL; | |
768 | } | |
769 | ||
770 | XFREE(MTYPE_OSPF_NEIGHBOR_STATIC, nbr_nbma); | |
771 | } | |
772 | ||
773 | route_table_finish(ospf->nbr_nbma); | |
774 | ||
775 | /* Clear networks and Areas. */ | |
776 | for (rn = route_top(ospf->networks); rn; rn = route_next(rn)) { | |
777 | struct ospf_network *network; | |
778 | ||
779 | if ((network = rn->info) != NULL) { | |
780 | ospf_network_free(ospf, network); | |
781 | rn->info = NULL; | |
782 | route_unlock_node(rn); | |
783 | } | |
784 | } | |
785 | route_table_finish(ospf->networks); | |
786 | ||
787 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) { | |
788 | listnode_delete(ospf->areas, area); | |
789 | ospf_area_free(area); | |
790 | } | |
791 | ||
792 | /* Cancel all timers. */ | |
793 | OSPF_TIMER_OFF(ospf->t_read); | |
794 | OSPF_TIMER_OFF(ospf->t_write); | |
795 | OSPF_TIMER_OFF(ospf->t_spf_calc); | |
796 | OSPF_TIMER_OFF(ospf->t_ase_calc); | |
797 | OSPF_TIMER_OFF(ospf->t_maxage); | |
798 | OSPF_TIMER_OFF(ospf->t_maxage_walker); | |
799 | OSPF_TIMER_OFF(ospf->t_abr_task); | |
800 | OSPF_TIMER_OFF(ospf->t_asbr_check); | |
801 | OSPF_TIMER_OFF(ospf->t_asbr_nssa_redist_update); | |
802 | OSPF_TIMER_OFF(ospf->t_distribute_update); | |
803 | OSPF_TIMER_OFF(ospf->t_lsa_refresher); | |
804 | OSPF_TIMER_OFF(ospf->t_opaque_lsa_self); | |
805 | OSPF_TIMER_OFF(ospf->t_sr_update); | |
806 | OSPF_TIMER_OFF(ospf->t_default_routemap_timer); | |
807 | OSPF_TIMER_OFF(ospf->t_external_aggr); | |
808 | OSPF_TIMER_OFF(ospf->gr_info.t_grace_period); | |
809 | ||
810 | LSDB_LOOP (OPAQUE_AS_LSDB(ospf), rn, lsa) | |
811 | ospf_discard_from_db(ospf, ospf->lsdb, lsa); | |
812 | LSDB_LOOP (EXTERNAL_LSDB(ospf), rn, lsa) | |
813 | ospf_discard_from_db(ospf, ospf->lsdb, lsa); | |
814 | ||
815 | ospf_lsdb_delete_all(ospf->lsdb); | |
816 | ospf_lsdb_free(ospf->lsdb); | |
817 | ||
818 | for (rn = route_top(ospf->maxage_lsa); rn; rn = route_next(rn)) { | |
819 | if ((lsa = rn->info) != NULL) { | |
820 | ospf_lsa_unlock(&lsa); | |
821 | rn->info = NULL; | |
822 | route_unlock_node(rn); | |
823 | } | |
824 | } | |
825 | route_table_finish(ospf->maxage_lsa); | |
826 | ||
827 | if (ospf->old_table) | |
828 | ospf_route_table_free(ospf->old_table); | |
829 | if (ospf->new_table) { | |
830 | if (!ospf->gr_info.prepare_in_progress) | |
831 | ospf_route_delete(ospf, ospf->new_table); | |
832 | ospf_route_table_free(ospf->new_table); | |
833 | } | |
834 | if (ospf->old_rtrs) | |
835 | ospf_rtrs_free(ospf->old_rtrs); | |
836 | if (ospf->new_rtrs) | |
837 | ospf_rtrs_free(ospf->new_rtrs); | |
838 | if (ospf->new_external_route) { | |
839 | if (!ospf->gr_info.prepare_in_progress) | |
840 | ospf_route_delete(ospf, ospf->new_external_route); | |
841 | ospf_route_table_free(ospf->new_external_route); | |
842 | } | |
843 | if (ospf->old_external_route) { | |
844 | if (!ospf->gr_info.prepare_in_progress) | |
845 | ospf_route_delete(ospf, ospf->old_external_route); | |
846 | ospf_route_table_free(ospf->old_external_route); | |
847 | } | |
848 | if (ospf->external_lsas) { | |
849 | ospf_ase_external_lsas_finish(ospf->external_lsas); | |
850 | } | |
851 | ||
852 | for (i = ZEBRA_ROUTE_SYSTEM; i <= ZEBRA_ROUTE_MAX; i++) { | |
853 | struct list *ext_list; | |
854 | struct ospf_external *ext; | |
855 | ||
856 | ext_list = ospf->external[i]; | |
857 | if (!ext_list) | |
858 | continue; | |
859 | ||
860 | for (ALL_LIST_ELEMENTS(ext_list, node, nnode, ext)) { | |
861 | if (ext->external_info) | |
862 | for (rn = route_top(ext->external_info); rn; | |
863 | rn = route_next(rn)) { | |
864 | if (rn->info == NULL) | |
865 | continue; | |
866 | ||
867 | XFREE(MTYPE_OSPF_EXTERNAL_INFO, | |
868 | rn->info); | |
869 | rn->info = NULL; | |
870 | route_unlock_node(rn); | |
871 | } | |
872 | ||
873 | ospf_external_del(ospf, i, ext->instance); | |
874 | } | |
875 | } | |
876 | ||
877 | ospf_distance_reset(ospf); | |
878 | route_table_finish(ospf->distance_table); | |
879 | ||
880 | /* Release extrenal Aggregator table */ | |
881 | for (rn = route_top(ospf->rt_aggr_tbl); rn; rn = route_next(rn)) { | |
882 | struct ospf_external_aggr_rt *aggr; | |
883 | ||
884 | aggr = rn->info; | |
885 | ||
886 | if (aggr) { | |
887 | ospf_external_aggregator_free(aggr); | |
888 | rn->info = NULL; | |
889 | route_unlock_node(rn); | |
890 | } | |
891 | } | |
892 | ||
893 | route_table_finish(ospf->rt_aggr_tbl); | |
894 | ||
895 | ||
896 | list_delete(&ospf->areas); | |
897 | list_delete(&ospf->oi_write_q); | |
898 | ||
899 | /* Reset GR helper data structers */ | |
900 | ospf_gr_helper_instance_stop(ospf); | |
901 | ||
902 | close(ospf->fd); | |
903 | stream_free(ospf->ibuf); | |
904 | ospf->fd = -1; | |
905 | ospf->max_multipath = MULTIPATH_NUM; | |
906 | ospf_delete(ospf); | |
907 | ||
908 | if (vrf) | |
909 | ospf_vrf_unlink(ospf, vrf); | |
910 | ||
911 | XFREE(MTYPE_OSPF_TOP, ospf->name); | |
912 | XFREE(MTYPE_OSPF_TOP, ospf); | |
913 | } | |
914 | ||
915 | ||
916 | /* allocate new OSPF Area object */ | |
917 | struct ospf_area *ospf_area_new(struct ospf *ospf, struct in_addr area_id) | |
918 | { | |
919 | struct ospf_area *new; | |
920 | ||
921 | /* Allocate new config_network. */ | |
922 | new = XCALLOC(MTYPE_OSPF_AREA, sizeof(struct ospf_area)); | |
923 | ||
924 | new->ospf = ospf; | |
925 | ||
926 | new->area_id = area_id; | |
927 | new->area_id_fmt = OSPF_AREA_ID_FMT_DOTTEDQUAD; | |
928 | ||
929 | new->external_routing = OSPF_AREA_DEFAULT; | |
930 | new->default_cost = 1; | |
931 | new->auth_type = OSPF_AUTH_NULL; | |
932 | ||
933 | /* New LSDB init. */ | |
934 | new->lsdb = ospf_lsdb_new(); | |
935 | ||
936 | /* Self-originated LSAs initialize. */ | |
937 | new->router_lsa_self = NULL; | |
938 | ||
939 | ospf_opaque_type10_lsa_init(new); | |
940 | ||
941 | new->oiflist = list_new(); | |
942 | new->ranges = route_table_init(); | |
943 | ||
944 | if (area_id.s_addr == OSPF_AREA_BACKBONE) | |
945 | ospf->backbone = new; | |
946 | ||
947 | return new; | |
948 | } | |
949 | ||
950 | void ospf_area_lsdb_discard_delete(struct ospf_area *area) | |
951 | { | |
952 | struct route_node *rn; | |
953 | struct ospf_lsa *lsa; | |
954 | ||
955 | LSDB_LOOP (ROUTER_LSDB(area), rn, lsa) | |
956 | ospf_discard_from_db(area->ospf, area->lsdb, lsa); | |
957 | LSDB_LOOP (NETWORK_LSDB(area), rn, lsa) | |
958 | ospf_discard_from_db(area->ospf, area->lsdb, lsa); | |
959 | LSDB_LOOP (SUMMARY_LSDB(area), rn, lsa) | |
960 | ospf_discard_from_db(area->ospf, area->lsdb, lsa); | |
961 | LSDB_LOOP (ASBR_SUMMARY_LSDB(area), rn, lsa) | |
962 | ospf_discard_from_db(area->ospf, area->lsdb, lsa); | |
963 | ||
964 | LSDB_LOOP (NSSA_LSDB(area), rn, lsa) | |
965 | ospf_discard_from_db(area->ospf, area->lsdb, lsa); | |
966 | LSDB_LOOP (OPAQUE_AREA_LSDB(area), rn, lsa) | |
967 | ospf_discard_from_db(area->ospf, area->lsdb, lsa); | |
968 | LSDB_LOOP (OPAQUE_LINK_LSDB(area), rn, lsa) | |
969 | ospf_discard_from_db(area->ospf, area->lsdb, lsa); | |
970 | ||
971 | ospf_lsdb_delete_all(area->lsdb); | |
972 | } | |
973 | ||
974 | static void ospf_area_free(struct ospf_area *area) | |
975 | { | |
976 | ospf_opaque_type10_lsa_term(area); | |
977 | ||
978 | /* Free LSDBs. */ | |
979 | ospf_area_lsdb_discard_delete(area); | |
980 | ||
981 | ospf_lsdb_free(area->lsdb); | |
982 | ||
983 | ospf_lsa_unlock(&area->router_lsa_self); | |
984 | ||
985 | route_table_finish(area->ranges); | |
986 | list_delete(&area->oiflist); | |
987 | ||
988 | if (EXPORT_NAME(area)) | |
989 | free(EXPORT_NAME(area)); | |
990 | ||
991 | if (IMPORT_NAME(area)) | |
992 | free(IMPORT_NAME(area)); | |
993 | ||
994 | /* Cancel timer. */ | |
995 | OSPF_TIMER_OFF(area->t_stub_router); | |
996 | OSPF_TIMER_OFF(area->t_opaque_lsa_self); | |
997 | ||
998 | if (OSPF_IS_AREA_BACKBONE(area)) | |
999 | area->ospf->backbone = NULL; | |
1000 | ||
1001 | XFREE(MTYPE_OSPF_AREA, area); | |
1002 | } | |
1003 | ||
1004 | void ospf_area_check_free(struct ospf *ospf, struct in_addr area_id) | |
1005 | { | |
1006 | struct ospf_area *area; | |
1007 | ||
1008 | area = ospf_area_lookup_by_area_id(ospf, area_id); | |
1009 | if (area && listcount(area->oiflist) == 0 && area->ranges->top == NULL | |
1010 | && !ospf_vl_count(ospf, area) | |
1011 | && area->shortcut_configured == OSPF_SHORTCUT_DEFAULT | |
1012 | && area->external_routing == OSPF_AREA_DEFAULT | |
1013 | && area->no_summary == 0 && area->default_cost == 1 | |
1014 | && EXPORT_NAME(area) == NULL && IMPORT_NAME(area) == NULL | |
1015 | && area->auth_type == OSPF_AUTH_NULL) { | |
1016 | listnode_delete(ospf->areas, area); | |
1017 | ospf_area_free(area); | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | struct ospf_area *ospf_area_get(struct ospf *ospf, struct in_addr area_id) | |
1022 | { | |
1023 | struct ospf_area *area; | |
1024 | ||
1025 | area = ospf_area_lookup_by_area_id(ospf, area_id); | |
1026 | if (!area) { | |
1027 | area = ospf_area_new(ospf, area_id); | |
1028 | listnode_add_sort(ospf->areas, area); | |
1029 | ospf_check_abr_status(ospf); | |
1030 | if (ospf->stub_router_admin_set | |
1031 | == OSPF_STUB_ROUTER_ADMINISTRATIVE_SET) { | |
1032 | SET_FLAG(area->stub_router_state, | |
1033 | OSPF_AREA_ADMIN_STUB_ROUTED); | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | return area; | |
1038 | } | |
1039 | ||
1040 | struct ospf_area *ospf_area_lookup_by_area_id(struct ospf *ospf, | |
1041 | struct in_addr area_id) | |
1042 | { | |
1043 | struct ospf_area *area; | |
1044 | struct listnode *node; | |
1045 | ||
1046 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, node, area)) | |
1047 | if (IPV4_ADDR_SAME(&area->area_id, &area_id)) | |
1048 | return area; | |
1049 | ||
1050 | return NULL; | |
1051 | } | |
1052 | ||
1053 | void ospf_area_add_if(struct ospf_area *area, struct ospf_interface *oi) | |
1054 | { | |
1055 | listnode_add(area->oiflist, oi); | |
1056 | } | |
1057 | ||
1058 | void ospf_area_del_if(struct ospf_area *area, struct ospf_interface *oi) | |
1059 | { | |
1060 | listnode_delete(area->oiflist, oi); | |
1061 | } | |
1062 | ||
1063 | ||
1064 | struct ospf_interface *add_ospf_interface(struct connected *co, | |
1065 | struct ospf_area *area) | |
1066 | { | |
1067 | struct ospf_interface *oi; | |
1068 | ||
1069 | oi = ospf_if_new(area->ospf, co->ifp, co->address); | |
1070 | oi->connected = co; | |
1071 | ||
1072 | oi->area = area; | |
1073 | ||
1074 | oi->params = ospf_lookup_if_params(co->ifp, oi->address->u.prefix4); | |
1075 | oi->output_cost = ospf_if_get_output_cost(oi); | |
1076 | ||
1077 | /* Relate ospf interface to ospf instance. */ | |
1078 | oi->ospf = area->ospf; | |
1079 | ||
1080 | /* update network type as interface flag */ | |
1081 | /* If network type is specified previously, | |
1082 | skip network type setting. */ | |
1083 | oi->type = IF_DEF_PARAMS(co->ifp)->type; | |
1084 | oi->ptp_dmvpn = IF_DEF_PARAMS(co->ifp)->ptp_dmvpn; | |
1085 | ||
1086 | /* Add pseudo neighbor. */ | |
1087 | ospf_nbr_self_reset(oi, oi->ospf->router_id); | |
1088 | ||
1089 | ospf_area_add_if(oi->area, oi); | |
1090 | ||
1091 | /* if LDP-IGP Sync is configured globally inherit config */ | |
1092 | ospf_ldp_sync_if_init(oi); | |
1093 | ||
1094 | /* | |
1095 | * if router_id is not configured, don't bring up | |
1096 | * interfaces. | |
1097 | * ospf_router_id_update() will call ospf_if_update | |
1098 | * whenever r-id is configured instead. | |
1099 | */ | |
1100 | if ((area->ospf->router_id.s_addr != INADDR_ANY) | |
1101 | && if_is_operative(co->ifp)) | |
1102 | ospf_if_up(oi); | |
1103 | ||
1104 | return oi; | |
1105 | } | |
1106 | ||
1107 | static void update_redistributed(struct ospf *ospf, int add_to_ospf) | |
1108 | { | |
1109 | struct route_node *rn; | |
1110 | struct external_info *ei; | |
1111 | struct ospf_external *ext; | |
1112 | ||
1113 | if (ospf_is_type_redistributed(ospf, ZEBRA_ROUTE_CONNECT, 0)) { | |
1114 | ext = ospf_external_lookup(ospf, ZEBRA_ROUTE_CONNECT, 0); | |
1115 | if ((ext) && EXTERNAL_INFO(ext)) { | |
1116 | for (rn = route_top(EXTERNAL_INFO(ext)); rn; | |
1117 | rn = route_next(rn)) { | |
1118 | ei = rn->info; | |
1119 | if (ei == NULL) | |
1120 | continue; | |
1121 | ||
1122 | if (add_to_ospf) { | |
1123 | if (ospf_external_info_find_lsa(ospf, | |
1124 | &ei->p)) | |
1125 | if (!ospf_redistribute_check( | |
1126 | ospf, ei, NULL)) | |
1127 | ospf_external_lsa_flush( | |
1128 | ospf, ei->type, | |
1129 | &ei->p, | |
1130 | ei->ifindex /*, ei->nexthop */); | |
1131 | } else { | |
1132 | if (!ospf_external_info_find_lsa( | |
1133 | ospf, &ei->p)) | |
1134 | if (ospf_redistribute_check( | |
1135 | ospf, ei, NULL)) | |
1136 | ospf_external_lsa_originate( | |
1137 | ospf, ei); | |
1138 | } | |
1139 | } | |
1140 | } | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | /* Config network statement related functions. */ | |
1145 | static struct ospf_network *ospf_network_new(struct in_addr area_id) | |
1146 | { | |
1147 | struct ospf_network *new; | |
1148 | new = XCALLOC(MTYPE_OSPF_NETWORK, sizeof(struct ospf_network)); | |
1149 | ||
1150 | new->area_id = area_id; | |
1151 | new->area_id_fmt = OSPF_AREA_ID_FMT_DOTTEDQUAD; | |
1152 | ||
1153 | return new; | |
1154 | } | |
1155 | ||
1156 | static void ospf_network_free(struct ospf *ospf, struct ospf_network *network) | |
1157 | { | |
1158 | ospf_area_check_free(ospf, network->area_id); | |
1159 | ospf_schedule_abr_task(ospf); | |
1160 | XFREE(MTYPE_OSPF_NETWORK, network); | |
1161 | } | |
1162 | ||
1163 | int ospf_network_set(struct ospf *ospf, struct prefix_ipv4 *p, | |
1164 | struct in_addr area_id, int df) | |
1165 | { | |
1166 | struct ospf_network *network; | |
1167 | struct ospf_area *area; | |
1168 | struct route_node *rn; | |
1169 | ||
1170 | rn = route_node_get(ospf->networks, (struct prefix *)p); | |
1171 | if (rn->info) { | |
1172 | network = rn->info; | |
1173 | route_unlock_node(rn); | |
1174 | ||
1175 | if (IPV4_ADDR_SAME(&area_id, &network->area_id)) { | |
1176 | return 1; | |
1177 | } else { | |
1178 | /* There is already same network statement. */ | |
1179 | return 0; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | rn->info = network = ospf_network_new(area_id); | |
1184 | network->area_id_fmt = df; | |
1185 | area = ospf_area_get(ospf, area_id); | |
1186 | ospf_area_display_format_set(ospf, area, df); | |
1187 | ||
1188 | /* Run network config now. */ | |
1189 | ospf_network_run((struct prefix *)p, area); | |
1190 | ||
1191 | /* Update connected redistribute. */ | |
1192 | update_redistributed(ospf, 1); /* interfaces possibly added */ | |
1193 | ||
1194 | ospf_area_check_free(ospf, area_id); | |
1195 | ||
1196 | return 1; | |
1197 | } | |
1198 | ||
1199 | int ospf_network_unset(struct ospf *ospf, struct prefix_ipv4 *p, | |
1200 | struct in_addr area_id) | |
1201 | { | |
1202 | struct route_node *rn; | |
1203 | struct ospf_network *network; | |
1204 | struct listnode *node, *nnode; | |
1205 | struct ospf_interface *oi; | |
1206 | ||
1207 | rn = route_node_lookup(ospf->networks, (struct prefix *)p); | |
1208 | if (rn == NULL) | |
1209 | return 0; | |
1210 | ||
1211 | network = rn->info; | |
1212 | route_unlock_node(rn); | |
1213 | if (!IPV4_ADDR_SAME(&area_id, &network->area_id)) | |
1214 | return 0; | |
1215 | ||
1216 | ospf_network_free(ospf, rn->info); | |
1217 | rn->info = NULL; | |
1218 | route_unlock_node(rn); /* initial reference */ | |
1219 | ||
1220 | /* Find interfaces that are not configured already. */ | |
1221 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) { | |
1222 | ||
1223 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
1224 | continue; | |
1225 | ||
1226 | ospf_network_run_subnet(ospf, oi->connected, NULL, NULL); | |
1227 | } | |
1228 | ||
1229 | /* Update connected redistribute. */ | |
1230 | update_redistributed(ospf, 0); /* interfaces possibly removed */ | |
1231 | ospf_area_check_free(ospf, area_id); | |
1232 | ||
1233 | return 1; | |
1234 | } | |
1235 | ||
1236 | /* Ensure there's an OSPF instance, as "ip ospf area" enabled OSPF means | |
1237 | * there might not be any 'router ospf' config. | |
1238 | * | |
1239 | * Otherwise, doesn't do anything different to ospf_if_update for now | |
1240 | */ | |
1241 | void ospf_interface_area_set(struct ospf *ospf, struct interface *ifp) | |
1242 | { | |
1243 | if (!ospf) | |
1244 | return; | |
1245 | ||
1246 | ospf_if_update(ospf, ifp); | |
1247 | /* if_update does a update_redistributed */ | |
1248 | ||
1249 | return; | |
1250 | } | |
1251 | ||
1252 | void ospf_interface_area_unset(struct ospf *ospf, struct interface *ifp) | |
1253 | { | |
1254 | struct route_node *rn_oi; | |
1255 | ||
1256 | if (!ospf) | |
1257 | return; /* Ospf not ready yet */ | |
1258 | ||
1259 | /* Find interfaces that may need to be removed. */ | |
1260 | for (rn_oi = route_top(IF_OIFS(ifp)); rn_oi; | |
1261 | rn_oi = route_next(rn_oi)) { | |
1262 | struct ospf_interface *oi = NULL; | |
1263 | ||
1264 | if ((oi = rn_oi->info) == NULL) | |
1265 | continue; | |
1266 | ||
1267 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
1268 | continue; | |
1269 | ||
1270 | ospf_network_run_subnet(ospf, oi->connected, NULL, NULL); | |
1271 | } | |
1272 | ||
1273 | /* Update connected redistribute. */ | |
1274 | update_redistributed(ospf, 0); /* interfaces possibly removed */ | |
1275 | } | |
1276 | ||
1277 | /* Check whether interface matches given network | |
1278 | * returns: 1, true. 0, false | |
1279 | */ | |
1280 | static int ospf_network_match_iface(const struct connected *co, | |
1281 | const struct prefix *net) | |
1282 | { | |
1283 | /* new approach: more elegant and conceptually clean */ | |
1284 | return prefix_match_network_statement(net, CONNECTED_PREFIX(co)); | |
1285 | } | |
1286 | ||
1287 | static void ospf_update_interface_area(struct connected *co, | |
1288 | struct ospf_area *area) | |
1289 | { | |
1290 | struct ospf_interface *oi = ospf_if_table_lookup(co->ifp, co->address); | |
1291 | ||
1292 | /* nothing to be done case */ | |
1293 | if (oi && oi->area == area) { | |
1294 | return; | |
1295 | } | |
1296 | ||
1297 | if (oi) | |
1298 | ospf_if_free(oi); | |
1299 | ||
1300 | add_ospf_interface(co, area); | |
1301 | } | |
1302 | ||
1303 | /* Run OSPF for the given subnet, taking into account the following | |
1304 | * possible sources of area configuration, in the given order of preference: | |
1305 | * | |
1306 | * - Whether there is interface+address specific area configuration | |
1307 | * - Whether there is a default area for the interface | |
1308 | * - Whether there is an area given as a parameter. | |
1309 | * - If no specific network prefix/area is supplied, whether there's | |
1310 | * a matching network configured. | |
1311 | */ | |
1312 | static void ospf_network_run_subnet(struct ospf *ospf, struct connected *co, | |
1313 | struct prefix *p, | |
1314 | struct ospf_area *given_area) | |
1315 | { | |
1316 | struct ospf_interface *oi; | |
1317 | struct ospf_if_params *params; | |
1318 | struct ospf_area *area = NULL; | |
1319 | struct route_node *rn; | |
1320 | int configed = 0; | |
1321 | ||
1322 | if (CHECK_FLAG(co->flags, ZEBRA_IFA_SECONDARY)) | |
1323 | return; | |
1324 | ||
1325 | if (co->address->family != AF_INET) | |
1326 | return; | |
1327 | ||
1328 | /* Try determine the appropriate area for this interface + address | |
1329 | * Start by checking interface config | |
1330 | */ | |
1331 | params = ospf_lookup_if_params(co->ifp, co->address->u.prefix4); | |
1332 | if (params && OSPF_IF_PARAM_CONFIGURED(params, if_area)) | |
1333 | area = ospf_area_get(ospf, params->if_area); | |
1334 | else { | |
1335 | params = IF_DEF_PARAMS(co->ifp); | |
1336 | if (OSPF_IF_PARAM_CONFIGURED(params, if_area)) | |
1337 | area = ospf_area_get(ospf, params->if_area); | |
1338 | } | |
1339 | ||
1340 | /* If we've found an interface and/or addr specific area, then we're | |
1341 | * done | |
1342 | */ | |
1343 | if (area) { | |
1344 | ospf_update_interface_area(co, area); | |
1345 | return; | |
1346 | } | |
1347 | ||
1348 | /* Otherwise, only remaining possibility is a matching network statement | |
1349 | */ | |
1350 | if (p) { | |
1351 | assert(given_area != NULL); | |
1352 | ||
1353 | /* Which either was supplied as a parameter.. (e.g. cause a new | |
1354 | * network/area was just added).. | |
1355 | */ | |
1356 | if (p->family == co->address->family | |
1357 | && ospf_network_match_iface(co, p)) | |
1358 | ospf_update_interface_area(co, given_area); | |
1359 | ||
1360 | return; | |
1361 | } | |
1362 | ||
1363 | /* Else we have to search the existing network/area config to see | |
1364 | * if any match.. | |
1365 | */ | |
1366 | for (rn = route_top(ospf->networks); rn; rn = route_next(rn)) | |
1367 | if (rn->info != NULL && ospf_network_match_iface(co, &rn->p)) { | |
1368 | struct ospf_network *network = | |
1369 | (struct ospf_network *)rn->info; | |
1370 | area = ospf_area_get(ospf, network->area_id); | |
1371 | ospf_update_interface_area(co, area); | |
1372 | configed = 1; | |
1373 | } | |
1374 | ||
1375 | /* If the subnet isn't in any area, deconfigure */ | |
1376 | if (!configed && (oi = ospf_if_table_lookup(co->ifp, co->address))) | |
1377 | ospf_if_free(oi); | |
1378 | } | |
1379 | ||
1380 | static void ospf_network_run_interface(struct ospf *ospf, struct interface *ifp, | |
1381 | struct prefix *p, | |
1382 | struct ospf_area *given_area) | |
1383 | { | |
1384 | struct listnode *cnode; | |
1385 | struct connected *co; | |
1386 | ||
1387 | if (memcmp(ifp->name, "VLINK", 5) == 0) | |
1388 | return; | |
1389 | ||
1390 | /* Network prefix without area is nonsensical */ | |
1391 | if (p) | |
1392 | assert(given_area != NULL); | |
1393 | ||
1394 | /* if interface prefix is match specified prefix, | |
1395 | then create socket and join multicast group. */ | |
1396 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, co)) | |
1397 | ospf_network_run_subnet(ospf, co, p, given_area); | |
1398 | } | |
1399 | ||
1400 | static void ospf_network_run(struct prefix *p, struct ospf_area *area) | |
1401 | { | |
1402 | struct vrf *vrf = vrf_lookup_by_id(area->ospf->vrf_id); | |
1403 | struct interface *ifp; | |
1404 | ||
1405 | /* Schedule Router ID Update. */ | |
1406 | if (area->ospf->router_id.s_addr == INADDR_ANY) | |
1407 | ospf_router_id_update(area->ospf); | |
1408 | ||
1409 | /* Get target interface. */ | |
1410 | FOR_ALL_INTERFACES (vrf, ifp) | |
1411 | ospf_network_run_interface(area->ospf, ifp, p, area); | |
1412 | } | |
1413 | ||
1414 | void ospf_ls_upd_queue_empty(struct ospf_interface *oi) | |
1415 | { | |
1416 | struct route_node *rn; | |
1417 | struct listnode *node, *nnode; | |
1418 | struct list *lst; | |
1419 | struct ospf_lsa *lsa; | |
1420 | ||
1421 | /* empty ls update queue */ | |
1422 | for (rn = route_top(oi->ls_upd_queue); rn; rn = route_next(rn)) | |
1423 | if ((lst = (struct list *)rn->info)) { | |
1424 | for (ALL_LIST_ELEMENTS(lst, node, nnode, lsa)) | |
1425 | ospf_lsa_unlock(&lsa); /* oi->ls_upd_queue */ | |
1426 | list_delete(&lst); | |
1427 | rn->info = NULL; | |
1428 | } | |
1429 | ||
1430 | /* remove update event */ | |
1431 | thread_cancel(&oi->t_ls_upd_event); | |
1432 | } | |
1433 | ||
1434 | void ospf_if_update(struct ospf *ospf, struct interface *ifp) | |
1435 | { | |
1436 | ||
1437 | if (!ospf) | |
1438 | return; | |
1439 | ||
1440 | if (IS_DEBUG_OSPF_EVENT) | |
1441 | zlog_debug( | |
1442 | "%s: interface %s vrf %s(%u) ospf vrf %s vrf_id %u router_id %pI4", | |
1443 | __func__, ifp->name, ifp->vrf->name, ifp->vrf->vrf_id, | |
1444 | ospf_vrf_id_to_name(ospf->vrf_id), ospf->vrf_id, | |
1445 | &ospf->router_id); | |
1446 | ||
1447 | /* OSPF must be ready. */ | |
1448 | if (!ospf_is_ready(ospf)) | |
1449 | return; | |
1450 | ||
1451 | ospf_network_run_interface(ospf, ifp, NULL, NULL); | |
1452 | ||
1453 | /* Update connected redistribute. */ | |
1454 | update_redistributed(ospf, 1); | |
1455 | ||
1456 | } | |
1457 | ||
1458 | void ospf_remove_vls_through_area(struct ospf *ospf, struct ospf_area *area) | |
1459 | { | |
1460 | struct listnode *node, *nnode; | |
1461 | struct ospf_vl_data *vl_data; | |
1462 | ||
1463 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) | |
1464 | if (IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1465 | ospf_vl_delete(ospf, vl_data); | |
1466 | } | |
1467 | ||
1468 | ||
1469 | static const struct message ospf_area_type_msg[] = { | |
1470 | {OSPF_AREA_DEFAULT, "Default"}, | |
1471 | {OSPF_AREA_STUB, "Stub"}, | |
1472 | {OSPF_AREA_NSSA, "NSSA"}, | |
1473 | {0}}; | |
1474 | ||
1475 | static void ospf_area_type_set(struct ospf_area *area, int type) | |
1476 | { | |
1477 | struct listnode *node; | |
1478 | struct ospf_interface *oi; | |
1479 | ||
1480 | if (area->external_routing == type) { | |
1481 | if (IS_DEBUG_OSPF_EVENT) | |
1482 | zlog_debug("Area[%pI4]: Types are the same, ignored.", | |
1483 | &area->area_id); | |
1484 | return; | |
1485 | } | |
1486 | ||
1487 | area->external_routing = type; | |
1488 | ||
1489 | if (IS_DEBUG_OSPF_EVENT) | |
1490 | zlog_debug("Area[%pI4]: Configured as %s", | |
1491 | &area->area_id, | |
1492 | lookup_msg(ospf_area_type_msg, type, NULL)); | |
1493 | ||
1494 | switch (area->external_routing) { | |
1495 | case OSPF_AREA_DEFAULT: | |
1496 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) | |
1497 | if (oi->nbr_self != NULL) { | |
1498 | UNSET_FLAG(oi->nbr_self->options, | |
1499 | OSPF_OPTION_NP); | |
1500 | SET_FLAG(oi->nbr_self->options, OSPF_OPTION_E); | |
1501 | } | |
1502 | break; | |
1503 | case OSPF_AREA_STUB: | |
1504 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) | |
1505 | if (oi->nbr_self != NULL) { | |
1506 | if (IS_DEBUG_OSPF_EVENT) | |
1507 | zlog_debug( | |
1508 | "setting options on %s accordingly", | |
1509 | IF_NAME(oi)); | |
1510 | UNSET_FLAG(oi->nbr_self->options, | |
1511 | OSPF_OPTION_NP); | |
1512 | UNSET_FLAG(oi->nbr_self->options, | |
1513 | OSPF_OPTION_E); | |
1514 | if (IS_DEBUG_OSPF_EVENT) | |
1515 | zlog_debug("options set on %s: %x", | |
1516 | IF_NAME(oi), OPTIONS(oi)); | |
1517 | } | |
1518 | break; | |
1519 | case OSPF_AREA_NSSA: | |
1520 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) | |
1521 | if (oi->nbr_self != NULL) { | |
1522 | zlog_debug( | |
1523 | "setting nssa options on %s accordingly", | |
1524 | IF_NAME(oi)); | |
1525 | UNSET_FLAG(oi->nbr_self->options, | |
1526 | OSPF_OPTION_E); | |
1527 | SET_FLAG(oi->nbr_self->options, OSPF_OPTION_NP); | |
1528 | zlog_debug("options set on %s: %x", IF_NAME(oi), | |
1529 | OPTIONS(oi)); | |
1530 | } | |
1531 | break; | |
1532 | default: | |
1533 | break; | |
1534 | } | |
1535 | ||
1536 | ospf_router_lsa_update_area(area); | |
1537 | ospf_schedule_abr_task(area->ospf); | |
1538 | } | |
1539 | ||
1540 | int ospf_area_shortcut_set(struct ospf *ospf, struct ospf_area *area, int mode) | |
1541 | { | |
1542 | if (area->shortcut_configured == mode) | |
1543 | return 0; | |
1544 | ||
1545 | area->shortcut_configured = mode; | |
1546 | ospf_router_lsa_update_area(area); | |
1547 | ospf_schedule_abr_task(ospf); | |
1548 | ||
1549 | ospf_area_check_free(ospf, area->area_id); | |
1550 | ||
1551 | return 1; | |
1552 | } | |
1553 | ||
1554 | int ospf_area_shortcut_unset(struct ospf *ospf, struct ospf_area *area) | |
1555 | { | |
1556 | area->shortcut_configured = OSPF_SHORTCUT_DEFAULT; | |
1557 | ospf_router_lsa_update_area(area); | |
1558 | ospf_area_check_free(ospf, area->area_id); | |
1559 | ospf_schedule_abr_task(ospf); | |
1560 | ||
1561 | return 1; | |
1562 | } | |
1563 | ||
1564 | static int ospf_area_vlink_count(struct ospf *ospf, struct ospf_area *area) | |
1565 | { | |
1566 | struct ospf_vl_data *vl; | |
1567 | struct listnode *node; | |
1568 | int count = 0; | |
1569 | ||
1570 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl)) | |
1571 | if (IPV4_ADDR_SAME(&vl->vl_area_id, &area->area_id)) | |
1572 | count++; | |
1573 | ||
1574 | return count; | |
1575 | } | |
1576 | ||
1577 | int ospf_area_display_format_set(struct ospf *ospf, struct ospf_area *area, | |
1578 | int df) | |
1579 | { | |
1580 | area->area_id_fmt = df; | |
1581 | ||
1582 | return 1; | |
1583 | } | |
1584 | ||
1585 | int ospf_area_stub_set(struct ospf *ospf, struct in_addr area_id) | |
1586 | { | |
1587 | struct ospf_area *area; | |
1588 | ||
1589 | area = ospf_area_get(ospf, area_id); | |
1590 | if (ospf_area_vlink_count(ospf, area)) | |
1591 | return 0; | |
1592 | ||
1593 | if (area->external_routing != OSPF_AREA_STUB) | |
1594 | ospf_area_type_set(area, OSPF_AREA_STUB); | |
1595 | ||
1596 | return 1; | |
1597 | } | |
1598 | ||
1599 | int ospf_area_stub_unset(struct ospf *ospf, struct in_addr area_id) | |
1600 | { | |
1601 | struct ospf_area *area; | |
1602 | ||
1603 | area = ospf_area_lookup_by_area_id(ospf, area_id); | |
1604 | if (area == NULL) | |
1605 | return 1; | |
1606 | ||
1607 | if (area->external_routing == OSPF_AREA_STUB) | |
1608 | ospf_area_type_set(area, OSPF_AREA_DEFAULT); | |
1609 | ||
1610 | ospf_area_check_free(ospf, area_id); | |
1611 | ||
1612 | return 1; | |
1613 | } | |
1614 | ||
1615 | int ospf_area_no_summary_set(struct ospf *ospf, struct in_addr area_id) | |
1616 | { | |
1617 | struct ospf_area *area; | |
1618 | ||
1619 | area = ospf_area_get(ospf, area_id); | |
1620 | area->no_summary = 1; | |
1621 | ||
1622 | return 1; | |
1623 | } | |
1624 | ||
1625 | int ospf_area_no_summary_unset(struct ospf *ospf, struct in_addr area_id) | |
1626 | { | |
1627 | struct ospf_area *area; | |
1628 | ||
1629 | area = ospf_area_lookup_by_area_id(ospf, area_id); | |
1630 | if (area == NULL) | |
1631 | return 0; | |
1632 | ||
1633 | area->no_summary = 0; | |
1634 | ospf_area_check_free(ospf, area_id); | |
1635 | ||
1636 | return 1; | |
1637 | } | |
1638 | ||
1639 | int ospf_area_nssa_no_summary_set(struct ospf *ospf, struct in_addr area_id) | |
1640 | { | |
1641 | struct ospf_area *area; | |
1642 | ||
1643 | area = ospf_area_get(ospf, area_id); | |
1644 | if (ospf_area_vlink_count(ospf, area)) | |
1645 | return 0; | |
1646 | ||
1647 | if (area->external_routing != OSPF_AREA_NSSA) { | |
1648 | ospf_area_type_set(area, OSPF_AREA_NSSA); | |
1649 | ospf->anyNSSA++; | |
1650 | area->NSSATranslatorRole = OSPF_NSSA_ROLE_CANDIDATE; | |
1651 | } | |
1652 | ||
1653 | ospf_area_no_summary_set(ospf, area_id); | |
1654 | ||
1655 | return 1; | |
1656 | } | |
1657 | ||
1658 | int ospf_area_nssa_set(struct ospf *ospf, struct in_addr area_id) | |
1659 | { | |
1660 | struct ospf_area *area; | |
1661 | ||
1662 | area = ospf_area_get(ospf, area_id); | |
1663 | if (ospf_area_vlink_count(ospf, area)) | |
1664 | return 0; | |
1665 | ||
1666 | if (area->external_routing != OSPF_AREA_NSSA) { | |
1667 | ospf_area_type_set(area, OSPF_AREA_NSSA); | |
1668 | ospf->anyNSSA++; | |
1669 | ||
1670 | /* set NSSA area defaults */ | |
1671 | area->no_summary = 0; | |
1672 | area->suppress_fa = 0; | |
1673 | area->NSSATranslatorRole = OSPF_NSSA_ROLE_CANDIDATE; | |
1674 | area->NSSATranslatorState = OSPF_NSSA_TRANSLATE_DISABLED; | |
1675 | area->NSSATranslatorStabilityInterval = | |
1676 | OSPF_NSSA_TRANS_STABLE_DEFAULT; | |
1677 | } | |
1678 | return 1; | |
1679 | } | |
1680 | ||
1681 | int ospf_area_nssa_unset(struct ospf *ospf, struct in_addr area_id, int argc) | |
1682 | { | |
1683 | struct ospf_area *area; | |
1684 | ||
1685 | area = ospf_area_lookup_by_area_id(ospf, area_id); | |
1686 | if (area == NULL) | |
1687 | return 0; | |
1688 | ||
1689 | /* argc < 5 -> 'no area x nssa' */ | |
1690 | if (argc < 5 && area->external_routing == OSPF_AREA_NSSA) { | |
1691 | ospf->anyNSSA--; | |
1692 | /* set NSSA area defaults */ | |
1693 | area->no_summary = 0; | |
1694 | area->suppress_fa = 0; | |
1695 | area->NSSATranslatorRole = OSPF_NSSA_ROLE_CANDIDATE; | |
1696 | area->NSSATranslatorState = OSPF_NSSA_TRANSLATE_DISABLED; | |
1697 | area->NSSATranslatorStabilityInterval = | |
1698 | OSPF_NSSA_TRANS_STABLE_DEFAULT; | |
1699 | ospf_area_type_set(area, OSPF_AREA_DEFAULT); | |
1700 | } else { | |
1701 | ospf_area_nssa_translator_role_set(ospf, area_id, | |
1702 | OSPF_NSSA_ROLE_CANDIDATE); | |
1703 | } | |
1704 | ||
1705 | ospf_area_check_free(ospf, area_id); | |
1706 | ||
1707 | return 1; | |
1708 | } | |
1709 | ||
1710 | int ospf_area_nssa_suppress_fa_set(struct ospf *ospf, struct in_addr area_id) | |
1711 | { | |
1712 | struct ospf_area *area; | |
1713 | ||
1714 | area = ospf_area_lookup_by_area_id(ospf, area_id); | |
1715 | if (area == NULL) | |
1716 | return 0; | |
1717 | ||
1718 | area->suppress_fa = 1; | |
1719 | ||
1720 | return 1; | |
1721 | } | |
1722 | ||
1723 | int ospf_area_nssa_suppress_fa_unset(struct ospf *ospf, struct in_addr area_id) | |
1724 | { | |
1725 | struct ospf_area *area; | |
1726 | ||
1727 | area = ospf_area_lookup_by_area_id(ospf, area_id); | |
1728 | if (area == NULL) | |
1729 | return 0; | |
1730 | ||
1731 | area->suppress_fa = 0; | |
1732 | ||
1733 | return 1; | |
1734 | } | |
1735 | ||
1736 | int ospf_area_nssa_translator_role_set(struct ospf *ospf, | |
1737 | struct in_addr area_id, int role) | |
1738 | { | |
1739 | struct ospf_area *area; | |
1740 | ||
1741 | area = ospf_area_lookup_by_area_id(ospf, area_id); | |
1742 | if (area == NULL) | |
1743 | return 0; | |
1744 | ||
1745 | if (role != area->NSSATranslatorRole) { | |
1746 | if ((area->NSSATranslatorRole == OSPF_NSSA_ROLE_ALWAYS) | |
1747 | || (role == OSPF_NSSA_ROLE_ALWAYS)) { | |
1748 | /* RFC 3101 3.1 | |
1749 | * if new role is OSPF_NSSA_ROLE_ALWAYS we need to set | |
1750 | * Nt bit, if the role was OSPF_NSSA_ROLE_ALWAYS we need | |
1751 | * to clear Nt bit | |
1752 | */ | |
1753 | area->NSSATranslatorRole = role; | |
1754 | ospf_router_lsa_update_area(area); | |
1755 | } else | |
1756 | area->NSSATranslatorRole = role; | |
1757 | } | |
1758 | ||
1759 | return 1; | |
1760 | } | |
1761 | ||
1762 | int ospf_area_export_list_set(struct ospf *ospf, struct ospf_area *area, | |
1763 | const char *list_name) | |
1764 | { | |
1765 | struct access_list *list; | |
1766 | list = access_list_lookup(AFI_IP, list_name); | |
1767 | ||
1768 | EXPORT_LIST(area) = list; | |
1769 | ||
1770 | if (EXPORT_NAME(area)) | |
1771 | free(EXPORT_NAME(area)); | |
1772 | ||
1773 | EXPORT_NAME(area) = strdup(list_name); | |
1774 | ospf_schedule_abr_task(ospf); | |
1775 | ||
1776 | return 1; | |
1777 | } | |
1778 | ||
1779 | int ospf_area_export_list_unset(struct ospf *ospf, struct ospf_area *area) | |
1780 | { | |
1781 | ||
1782 | EXPORT_LIST(area) = 0; | |
1783 | ||
1784 | if (EXPORT_NAME(area)) | |
1785 | free(EXPORT_NAME(area)); | |
1786 | ||
1787 | EXPORT_NAME(area) = NULL; | |
1788 | ||
1789 | ospf_area_check_free(ospf, area->area_id); | |
1790 | ||
1791 | ospf_schedule_abr_task(ospf); | |
1792 | ||
1793 | return 1; | |
1794 | } | |
1795 | ||
1796 | int ospf_area_import_list_set(struct ospf *ospf, struct ospf_area *area, | |
1797 | const char *name) | |
1798 | { | |
1799 | struct access_list *list; | |
1800 | list = access_list_lookup(AFI_IP, name); | |
1801 | ||
1802 | IMPORT_LIST(area) = list; | |
1803 | ||
1804 | if (IMPORT_NAME(area)) | |
1805 | free(IMPORT_NAME(area)); | |
1806 | ||
1807 | IMPORT_NAME(area) = strdup(name); | |
1808 | ospf_schedule_abr_task(ospf); | |
1809 | ||
1810 | return 1; | |
1811 | } | |
1812 | ||
1813 | int ospf_area_import_list_unset(struct ospf *ospf, struct ospf_area *area) | |
1814 | { | |
1815 | IMPORT_LIST(area) = 0; | |
1816 | ||
1817 | if (IMPORT_NAME(area)) | |
1818 | free(IMPORT_NAME(area)); | |
1819 | ||
1820 | IMPORT_NAME(area) = NULL; | |
1821 | ospf_area_check_free(ospf, area->area_id); | |
1822 | ||
1823 | ospf_schedule_abr_task(ospf); | |
1824 | ||
1825 | return 1; | |
1826 | } | |
1827 | ||
1828 | int ospf_timers_refresh_set(struct ospf *ospf, int interval) | |
1829 | { | |
1830 | int time_left; | |
1831 | ||
1832 | if (ospf->lsa_refresh_interval == interval) | |
1833 | return 1; | |
1834 | ||
1835 | time_left = ospf->lsa_refresh_interval | |
1836 | - (monotime(NULL) - ospf->lsa_refresher_started); | |
1837 | ||
1838 | if (time_left > interval) { | |
1839 | OSPF_TIMER_OFF(ospf->t_lsa_refresher); | |
1840 | thread_add_timer(master, ospf_lsa_refresh_walker, ospf, | |
1841 | interval, &ospf->t_lsa_refresher); | |
1842 | } | |
1843 | ospf->lsa_refresh_interval = interval; | |
1844 | ||
1845 | return 1; | |
1846 | } | |
1847 | ||
1848 | int ospf_timers_refresh_unset(struct ospf *ospf) | |
1849 | { | |
1850 | int time_left; | |
1851 | ||
1852 | time_left = ospf->lsa_refresh_interval | |
1853 | - (monotime(NULL) - ospf->lsa_refresher_started); | |
1854 | ||
1855 | if (time_left > OSPF_LSA_REFRESH_INTERVAL_DEFAULT) { | |
1856 | OSPF_TIMER_OFF(ospf->t_lsa_refresher); | |
1857 | ospf->t_lsa_refresher = NULL; | |
1858 | thread_add_timer(master, ospf_lsa_refresh_walker, ospf, | |
1859 | OSPF_LSA_REFRESH_INTERVAL_DEFAULT, | |
1860 | &ospf->t_lsa_refresher); | |
1861 | } | |
1862 | ||
1863 | ospf->lsa_refresh_interval = OSPF_LSA_REFRESH_INTERVAL_DEFAULT; | |
1864 | ||
1865 | return 1; | |
1866 | } | |
1867 | ||
1868 | ||
1869 | static struct ospf_nbr_nbma *ospf_nbr_nbma_new(void) | |
1870 | { | |
1871 | struct ospf_nbr_nbma *nbr_nbma; | |
1872 | ||
1873 | nbr_nbma = XCALLOC(MTYPE_OSPF_NEIGHBOR_STATIC, | |
1874 | sizeof(struct ospf_nbr_nbma)); | |
1875 | ||
1876 | nbr_nbma->priority = OSPF_NEIGHBOR_PRIORITY_DEFAULT; | |
1877 | nbr_nbma->v_poll = OSPF_POLL_INTERVAL_DEFAULT; | |
1878 | ||
1879 | return nbr_nbma; | |
1880 | } | |
1881 | ||
1882 | static void ospf_nbr_nbma_free(struct ospf_nbr_nbma *nbr_nbma) | |
1883 | { | |
1884 | XFREE(MTYPE_OSPF_NEIGHBOR_STATIC, nbr_nbma); | |
1885 | } | |
1886 | ||
1887 | static void ospf_nbr_nbma_delete(struct ospf *ospf, | |
1888 | struct ospf_nbr_nbma *nbr_nbma) | |
1889 | { | |
1890 | struct route_node *rn; | |
1891 | struct prefix_ipv4 p; | |
1892 | ||
1893 | p.family = AF_INET; | |
1894 | p.prefix = nbr_nbma->addr; | |
1895 | p.prefixlen = IPV4_MAX_BITLEN; | |
1896 | ||
1897 | rn = route_node_lookup(ospf->nbr_nbma, (struct prefix *)&p); | |
1898 | if (rn) { | |
1899 | ospf_nbr_nbma_free(rn->info); | |
1900 | rn->info = NULL; | |
1901 | route_unlock_node(rn); | |
1902 | route_unlock_node(rn); | |
1903 | } | |
1904 | } | |
1905 | ||
1906 | static void ospf_nbr_nbma_down(struct ospf_nbr_nbma *nbr_nbma) | |
1907 | { | |
1908 | OSPF_TIMER_OFF(nbr_nbma->t_poll); | |
1909 | ||
1910 | if (nbr_nbma->nbr) { | |
1911 | nbr_nbma->nbr->nbr_nbma = NULL; | |
1912 | OSPF_NSM_EVENT_EXECUTE(nbr_nbma->nbr, NSM_KillNbr); | |
1913 | } | |
1914 | ||
1915 | if (nbr_nbma->oi) | |
1916 | listnode_delete(nbr_nbma->oi->nbr_nbma, nbr_nbma); | |
1917 | } | |
1918 | ||
1919 | static void ospf_nbr_nbma_add(struct ospf_nbr_nbma *nbr_nbma, | |
1920 | struct ospf_interface *oi) | |
1921 | { | |
1922 | struct ospf_neighbor *nbr; | |
1923 | struct route_node *rn; | |
1924 | struct prefix p; | |
1925 | ||
1926 | if (oi->type != OSPF_IFTYPE_NBMA) | |
1927 | return; | |
1928 | ||
1929 | if (nbr_nbma->nbr != NULL) | |
1930 | return; | |
1931 | ||
1932 | if (IPV4_ADDR_SAME(&oi->nbr_self->address.u.prefix4, &nbr_nbma->addr)) | |
1933 | return; | |
1934 | ||
1935 | nbr_nbma->oi = oi; | |
1936 | listnode_add(oi->nbr_nbma, nbr_nbma); | |
1937 | ||
1938 | /* Get neighbor information from table. */ | |
1939 | p.family = AF_INET; | |
1940 | p.prefixlen = IPV4_MAX_BITLEN; | |
1941 | p.u.prefix4 = nbr_nbma->addr; | |
1942 | ||
1943 | rn = route_node_get(oi->nbrs, &p); | |
1944 | if (rn->info) { | |
1945 | nbr = rn->info; | |
1946 | nbr->nbr_nbma = nbr_nbma; | |
1947 | nbr_nbma->nbr = nbr; | |
1948 | ||
1949 | route_unlock_node(rn); | |
1950 | } else { | |
1951 | nbr = rn->info = ospf_nbr_new(oi); | |
1952 | nbr->state = NSM_Down; | |
1953 | nbr->src = nbr_nbma->addr; | |
1954 | nbr->nbr_nbma = nbr_nbma; | |
1955 | nbr->priority = nbr_nbma->priority; | |
1956 | nbr->address = p; | |
1957 | ||
1958 | nbr_nbma->nbr = nbr; | |
1959 | ||
1960 | /* Configure BFD if interface has it. */ | |
1961 | ospf_neighbor_bfd_apply(nbr); | |
1962 | ||
1963 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_Start); | |
1964 | } | |
1965 | } | |
1966 | ||
1967 | void ospf_nbr_nbma_if_update(struct ospf *ospf, struct ospf_interface *oi) | |
1968 | { | |
1969 | struct ospf_nbr_nbma *nbr_nbma; | |
1970 | struct route_node *rn; | |
1971 | struct prefix_ipv4 p; | |
1972 | ||
1973 | if (oi->type != OSPF_IFTYPE_NBMA) | |
1974 | return; | |
1975 | ||
1976 | for (rn = route_top(ospf->nbr_nbma); rn; rn = route_next(rn)) | |
1977 | if ((nbr_nbma = rn->info)) | |
1978 | if (nbr_nbma->oi == NULL && nbr_nbma->nbr == NULL) { | |
1979 | p.family = AF_INET; | |
1980 | p.prefix = nbr_nbma->addr; | |
1981 | p.prefixlen = IPV4_MAX_BITLEN; | |
1982 | ||
1983 | if (prefix_match(oi->address, | |
1984 | (struct prefix *)&p)) | |
1985 | ospf_nbr_nbma_add(nbr_nbma, oi); | |
1986 | } | |
1987 | } | |
1988 | ||
1989 | struct ospf_nbr_nbma *ospf_nbr_nbma_lookup(struct ospf *ospf, | |
1990 | struct in_addr nbr_addr) | |
1991 | { | |
1992 | struct route_node *rn; | |
1993 | struct prefix_ipv4 p; | |
1994 | ||
1995 | p.family = AF_INET; | |
1996 | p.prefix = nbr_addr; | |
1997 | p.prefixlen = IPV4_MAX_BITLEN; | |
1998 | ||
1999 | rn = route_node_lookup(ospf->nbr_nbma, (struct prefix *)&p); | |
2000 | if (rn) { | |
2001 | route_unlock_node(rn); | |
2002 | return rn->info; | |
2003 | } | |
2004 | return NULL; | |
2005 | } | |
2006 | ||
2007 | int ospf_nbr_nbma_set(struct ospf *ospf, struct in_addr nbr_addr) | |
2008 | { | |
2009 | struct ospf_nbr_nbma *nbr_nbma; | |
2010 | struct ospf_interface *oi; | |
2011 | struct prefix_ipv4 p; | |
2012 | struct route_node *rn; | |
2013 | struct listnode *node; | |
2014 | ||
2015 | nbr_nbma = ospf_nbr_nbma_lookup(ospf, nbr_addr); | |
2016 | if (nbr_nbma) | |
2017 | return 0; | |
2018 | ||
2019 | nbr_nbma = ospf_nbr_nbma_new(); | |
2020 | nbr_nbma->addr = nbr_addr; | |
2021 | ||
2022 | p.family = AF_INET; | |
2023 | p.prefix = nbr_addr; | |
2024 | p.prefixlen = IPV4_MAX_BITLEN; | |
2025 | ||
2026 | rn = route_node_get(ospf->nbr_nbma, (struct prefix *)&p); | |
2027 | if (rn->info) | |
2028 | route_unlock_node(rn); | |
2029 | rn->info = nbr_nbma; | |
2030 | ||
2031 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
2032 | if (oi->type == OSPF_IFTYPE_NBMA) | |
2033 | if (prefix_match(oi->address, (struct prefix *)&p)) { | |
2034 | ospf_nbr_nbma_add(nbr_nbma, oi); | |
2035 | break; | |
2036 | } | |
2037 | } | |
2038 | ||
2039 | return 1; | |
2040 | } | |
2041 | ||
2042 | int ospf_nbr_nbma_unset(struct ospf *ospf, struct in_addr nbr_addr) | |
2043 | { | |
2044 | struct ospf_nbr_nbma *nbr_nbma; | |
2045 | ||
2046 | nbr_nbma = ospf_nbr_nbma_lookup(ospf, nbr_addr); | |
2047 | if (nbr_nbma == NULL) | |
2048 | return 0; | |
2049 | ||
2050 | ospf_nbr_nbma_down(nbr_nbma); | |
2051 | ospf_nbr_nbma_delete(ospf, nbr_nbma); | |
2052 | ||
2053 | return 1; | |
2054 | } | |
2055 | ||
2056 | int ospf_nbr_nbma_priority_set(struct ospf *ospf, struct in_addr nbr_addr, | |
2057 | uint8_t priority) | |
2058 | { | |
2059 | struct ospf_nbr_nbma *nbr_nbma; | |
2060 | ||
2061 | nbr_nbma = ospf_nbr_nbma_lookup(ospf, nbr_addr); | |
2062 | if (nbr_nbma == NULL) | |
2063 | return 0; | |
2064 | ||
2065 | if (nbr_nbma->priority != priority) | |
2066 | nbr_nbma->priority = priority; | |
2067 | ||
2068 | return 1; | |
2069 | } | |
2070 | ||
2071 | int ospf_nbr_nbma_priority_unset(struct ospf *ospf, struct in_addr nbr_addr) | |
2072 | { | |
2073 | struct ospf_nbr_nbma *nbr_nbma; | |
2074 | ||
2075 | nbr_nbma = ospf_nbr_nbma_lookup(ospf, nbr_addr); | |
2076 | if (nbr_nbma == NULL) | |
2077 | return 0; | |
2078 | ||
2079 | if (nbr_nbma != OSPF_NEIGHBOR_PRIORITY_DEFAULT) | |
2080 | nbr_nbma->priority = OSPF_NEIGHBOR_PRIORITY_DEFAULT; | |
2081 | ||
2082 | return 1; | |
2083 | } | |
2084 | ||
2085 | int ospf_nbr_nbma_poll_interval_set(struct ospf *ospf, struct in_addr nbr_addr, | |
2086 | unsigned int interval) | |
2087 | { | |
2088 | struct ospf_nbr_nbma *nbr_nbma; | |
2089 | ||
2090 | nbr_nbma = ospf_nbr_nbma_lookup(ospf, nbr_addr); | |
2091 | if (nbr_nbma == NULL) | |
2092 | return 0; | |
2093 | ||
2094 | if (nbr_nbma->v_poll != interval) { | |
2095 | nbr_nbma->v_poll = interval; | |
2096 | if (nbr_nbma->oi && ospf_if_is_up(nbr_nbma->oi)) { | |
2097 | OSPF_TIMER_OFF(nbr_nbma->t_poll); | |
2098 | OSPF_POLL_TIMER_ON(nbr_nbma->t_poll, ospf_poll_timer, | |
2099 | nbr_nbma->v_poll); | |
2100 | } | |
2101 | } | |
2102 | ||
2103 | return 1; | |
2104 | } | |
2105 | ||
2106 | int ospf_nbr_nbma_poll_interval_unset(struct ospf *ospf, struct in_addr addr) | |
2107 | { | |
2108 | struct ospf_nbr_nbma *nbr_nbma; | |
2109 | ||
2110 | nbr_nbma = ospf_nbr_nbma_lookup(ospf, addr); | |
2111 | if (nbr_nbma == NULL) | |
2112 | return 0; | |
2113 | ||
2114 | if (nbr_nbma->v_poll != OSPF_POLL_INTERVAL_DEFAULT) | |
2115 | nbr_nbma->v_poll = OSPF_POLL_INTERVAL_DEFAULT; | |
2116 | ||
2117 | return 1; | |
2118 | } | |
2119 | ||
2120 | void ospf_master_init(struct thread_master *master) | |
2121 | { | |
2122 | memset(&ospf_master, 0, sizeof(ospf_master)); | |
2123 | ||
2124 | om = &ospf_master; | |
2125 | om->ospf = list_new(); | |
2126 | om->master = master; | |
2127 | } | |
2128 | ||
2129 | /* Link OSPF instance to VRF. */ | |
2130 | void ospf_vrf_link(struct ospf *ospf, struct vrf *vrf) | |
2131 | { | |
2132 | ospf->vrf_id = vrf->vrf_id; | |
2133 | if (vrf->info != (void *)ospf) | |
2134 | vrf->info = (void *)ospf; | |
2135 | } | |
2136 | ||
2137 | /* Unlink OSPF instance from VRF. */ | |
2138 | void ospf_vrf_unlink(struct ospf *ospf, struct vrf *vrf) | |
2139 | { | |
2140 | if (vrf->info == (void *)ospf) | |
2141 | vrf->info = NULL; | |
2142 | ospf->vrf_id = VRF_UNKNOWN; | |
2143 | } | |
2144 | ||
2145 | /* This is hook function for vrf create called as part of vrf_init */ | |
2146 | static int ospf_vrf_new(struct vrf *vrf) | |
2147 | { | |
2148 | if (IS_DEBUG_OSPF_EVENT) | |
2149 | zlog_debug("%s: VRF Created: %s(%u)", __func__, vrf->name, | |
2150 | vrf->vrf_id); | |
2151 | ||
2152 | return 0; | |
2153 | } | |
2154 | ||
2155 | /* This is hook function for vrf delete call as part of vrf_init */ | |
2156 | static int ospf_vrf_delete(struct vrf *vrf) | |
2157 | { | |
2158 | if (IS_DEBUG_OSPF_EVENT) | |
2159 | zlog_debug("%s: VRF Deletion: %s(%u)", __func__, vrf->name, | |
2160 | vrf->vrf_id); | |
2161 | ||
2162 | return 0; | |
2163 | } | |
2164 | ||
2165 | static void ospf_set_redist_vrf_bitmaps(struct ospf *ospf, bool set) | |
2166 | { | |
2167 | int type; | |
2168 | struct list *red_list; | |
2169 | ||
2170 | for (type = 0; type < ZEBRA_ROUTE_MAX; type++) { | |
2171 | red_list = ospf->redist[type]; | |
2172 | if (!red_list) | |
2173 | continue; | |
2174 | if (IS_DEBUG_OSPF_EVENT) | |
2175 | zlog_debug( | |
2176 | "%s: setting redist vrf %d bitmap for type %d", | |
2177 | __func__, ospf->vrf_id, type); | |
2178 | if (set) | |
2179 | vrf_bitmap_set(zclient->redist[AFI_IP][type], | |
2180 | ospf->vrf_id); | |
2181 | else | |
2182 | vrf_bitmap_unset(zclient->redist[AFI_IP][type], | |
2183 | ospf->vrf_id); | |
2184 | } | |
2185 | ||
2186 | red_list = ospf->redist[DEFAULT_ROUTE]; | |
2187 | if (red_list) { | |
2188 | if (set) | |
2189 | vrf_bitmap_set(zclient->default_information[AFI_IP], | |
2190 | ospf->vrf_id); | |
2191 | else | |
2192 | vrf_bitmap_unset(zclient->default_information[AFI_IP], | |
2193 | ospf->vrf_id); | |
2194 | } | |
2195 | } | |
2196 | ||
2197 | /* Enable OSPF VRF instance */ | |
2198 | static int ospf_vrf_enable(struct vrf *vrf) | |
2199 | { | |
2200 | struct ospf *ospf = NULL; | |
2201 | vrf_id_t old_vrf_id; | |
2202 | int ret = 0; | |
2203 | ||
2204 | if (IS_DEBUG_OSPF_EVENT) | |
2205 | zlog_debug("%s: VRF %s id %u enabled", __func__, vrf->name, | |
2206 | vrf->vrf_id); | |
2207 | ||
2208 | ospf = ospf_lookup_by_name(vrf->name); | |
2209 | if (ospf) { | |
2210 | old_vrf_id = ospf->vrf_id; | |
2211 | /* We have instance configured, link to VRF and make it "up". */ | |
2212 | ospf_vrf_link(ospf, vrf); | |
2213 | if (IS_DEBUG_OSPF_EVENT) | |
2214 | zlog_debug( | |
2215 | "%s: ospf linked to vrf %s vrf_id %u (old id %u)", | |
2216 | __func__, vrf->name, ospf->vrf_id, old_vrf_id); | |
2217 | ||
2218 | if (old_vrf_id != ospf->vrf_id) { | |
2219 | ospf_set_redist_vrf_bitmaps(ospf, true); | |
2220 | ||
2221 | /* start zebra redist to us for new vrf */ | |
2222 | ospf_zebra_vrf_register(ospf); | |
2223 | ||
2224 | ret = ospf_sock_init(ospf); | |
2225 | if (ret < 0 || ospf->fd <= 0) | |
2226 | return 0; | |
2227 | thread_add_read(master, ospf_read, ospf, ospf->fd, | |
2228 | &ospf->t_read); | |
2229 | ospf->oi_running = 1; | |
2230 | ospf_router_id_update(ospf); | |
2231 | } | |
2232 | } | |
2233 | ||
2234 | return 0; | |
2235 | } | |
2236 | ||
2237 | /* Disable OSPF VRF instance */ | |
2238 | static int ospf_vrf_disable(struct vrf *vrf) | |
2239 | { | |
2240 | struct ospf *ospf = NULL; | |
2241 | vrf_id_t old_vrf_id = VRF_UNKNOWN; | |
2242 | ||
2243 | if (vrf->vrf_id == VRF_DEFAULT) | |
2244 | return 0; | |
2245 | ||
2246 | if (IS_DEBUG_OSPF_EVENT) | |
2247 | zlog_debug("%s: VRF %s id %d disabled.", __func__, vrf->name, | |
2248 | vrf->vrf_id); | |
2249 | ||
2250 | ospf = ospf_lookup_by_name(vrf->name); | |
2251 | if (ospf) { | |
2252 | old_vrf_id = ospf->vrf_id; | |
2253 | ||
2254 | ospf_zebra_vrf_deregister(ospf); | |
2255 | ||
2256 | ospf_set_redist_vrf_bitmaps(ospf, false); | |
2257 | ||
2258 | /* We have instance configured, unlink | |
2259 | * from VRF and make it "down". | |
2260 | */ | |
2261 | ospf_vrf_unlink(ospf, vrf); | |
2262 | ospf->oi_running = 0; | |
2263 | if (IS_DEBUG_OSPF_EVENT) | |
2264 | zlog_debug("%s: ospf old_vrf_id %d unlinked", __func__, | |
2265 | old_vrf_id); | |
2266 | thread_cancel(&ospf->t_read); | |
2267 | close(ospf->fd); | |
2268 | ospf->fd = -1; | |
2269 | } | |
2270 | ||
2271 | /* Note: This is a callback, the VRF will be deleted by the caller. */ | |
2272 | return 0; | |
2273 | } | |
2274 | ||
2275 | void ospf_vrf_init(void) | |
2276 | { | |
2277 | vrf_init(ospf_vrf_new, ospf_vrf_enable, ospf_vrf_disable, | |
2278 | ospf_vrf_delete); | |
2279 | } | |
2280 | ||
2281 | void ospf_vrf_terminate(void) | |
2282 | { | |
2283 | vrf_terminate(); | |
2284 | } | |
2285 | ||
2286 | const char *ospf_vrf_id_to_name(vrf_id_t vrf_id) | |
2287 | { | |
2288 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); | |
2289 | ||
2290 | return vrf ? vrf->name : "NIL"; | |
2291 | } | |
2292 | ||
2293 | const char *ospf_get_name(const struct ospf *ospf) | |
2294 | { | |
2295 | if (ospf->name) | |
2296 | return ospf->name; | |
2297 | else | |
2298 | return VRF_DEFAULT_NAME; | |
2299 | } |