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1 | /* | |
2 | * Zebra connect library for OSPFd | |
3 | * Copyright (C) 1997, 98, 99, 2000 Kunihiro Ishiguro, Toshiaki Takada | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License 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 | |
20 | */ | |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "thread.h" | |
25 | #include "command.h" | |
26 | #include "network.h" | |
27 | #include "prefix.h" | |
28 | #include "routemap.h" | |
29 | #include "table.h" | |
30 | #include "stream.h" | |
31 | #include "memory.h" | |
32 | #include "zclient.h" | |
33 | #include "filter.h" | |
34 | #include "plist.h" | |
35 | #include "log.h" | |
36 | #include "lib/bfd.h" | |
37 | #include "nexthop.h" | |
38 | ||
39 | #include "ospfd/ospfd.h" | |
40 | #include "ospfd/ospf_interface.h" | |
41 | #include "ospfd/ospf_ism.h" | |
42 | #include "ospfd/ospf_asbr.h" | |
43 | #include "ospfd/ospf_asbr.h" | |
44 | #include "ospfd/ospf_abr.h" | |
45 | #include "ospfd/ospf_lsa.h" | |
46 | #include "ospfd/ospf_dump.h" | |
47 | #include "ospfd/ospf_route.h" | |
48 | #include "ospfd/ospf_lsdb.h" | |
49 | #include "ospfd/ospf_neighbor.h" | |
50 | #include "ospfd/ospf_nsm.h" | |
51 | #include "ospfd/ospf_zebra.h" | |
52 | #include "ospfd/ospf_te.h" | |
53 | ||
54 | DEFINE_MTYPE_STATIC(OSPFD, OSPF_EXTERNAL, "OSPF External route table") | |
55 | DEFINE_MTYPE_STATIC(OSPFD, OSPF_REDISTRIBUTE, "OSPF Redistriute") | |
56 | DEFINE_MTYPE_STATIC(OSPFD, OSPF_DIST_ARGS, "OSPF Distribute arguments") | |
57 | ||
58 | /* Zebra structure to hold current status. */ | |
59 | struct zclient *zclient = NULL; | |
60 | ||
61 | /* For registering threads. */ | |
62 | extern struct thread_master *master; | |
63 | ||
64 | /* Router-id update message from zebra. */ | |
65 | static int ospf_router_id_update_zebra(ZAPI_CALLBACK_ARGS) | |
66 | { | |
67 | struct ospf *ospf = NULL; | |
68 | struct prefix router_id; | |
69 | zebra_router_id_update_read(zclient->ibuf, &router_id); | |
70 | ||
71 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) { | |
72 | char buf[PREFIX2STR_BUFFER]; | |
73 | prefix2str(&router_id, buf, sizeof(buf)); | |
74 | zlog_debug("Zebra rcvd: router id update %s vrf %s id %u", buf, | |
75 | ospf_vrf_id_to_name(vrf_id), vrf_id); | |
76 | } | |
77 | ||
78 | ospf = ospf_lookup_by_vrf_id(vrf_id); | |
79 | ||
80 | if (ospf != NULL) { | |
81 | ospf->router_id_zebra = router_id.u.prefix4; | |
82 | ospf_router_id_update(ospf); | |
83 | } else { | |
84 | if (IS_DEBUG_OSPF_EVENT) { | |
85 | char buf[PREFIX2STR_BUFFER]; | |
86 | ||
87 | prefix2str(&router_id, buf, sizeof(buf)); | |
88 | zlog_debug( | |
89 | "%s: ospf instance not found for vrf %s id %u router_id %s", | |
90 | __PRETTY_FUNCTION__, | |
91 | ospf_vrf_id_to_name(vrf_id), vrf_id, buf); | |
92 | } | |
93 | } | |
94 | return 0; | |
95 | } | |
96 | ||
97 | static int ospf_interface_address_add(ZAPI_CALLBACK_ARGS) | |
98 | { | |
99 | struct connected *c; | |
100 | struct ospf *ospf = NULL; | |
101 | ||
102 | ||
103 | c = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); | |
104 | ||
105 | if (c == NULL) | |
106 | return 0; | |
107 | ||
108 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) { | |
109 | char buf[PREFIX2STR_BUFFER]; | |
110 | prefix2str(c->address, buf, sizeof(buf)); | |
111 | zlog_debug("Zebra: interface %s address add %s vrf %s id %u", | |
112 | c->ifp->name, buf, ospf_vrf_id_to_name(vrf_id), | |
113 | vrf_id); | |
114 | } | |
115 | ||
116 | ospf = ospf_lookup_by_vrf_id(vrf_id); | |
117 | if (!ospf) | |
118 | return 0; | |
119 | ||
120 | ospf_if_update(ospf, c->ifp); | |
121 | ||
122 | ospf_if_interface(c->ifp); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | static int ospf_interface_address_delete(ZAPI_CALLBACK_ARGS) | |
128 | { | |
129 | struct connected *c; | |
130 | struct interface *ifp; | |
131 | struct ospf_interface *oi; | |
132 | struct route_node *rn; | |
133 | struct prefix p; | |
134 | ||
135 | c = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); | |
136 | ||
137 | if (c == NULL) | |
138 | return 0; | |
139 | ||
140 | if (IS_DEBUG_OSPF(zebra, ZEBRA_INTERFACE)) { | |
141 | char buf[PREFIX2STR_BUFFER]; | |
142 | prefix2str(c->address, buf, sizeof(buf)); | |
143 | zlog_debug("Zebra: interface %s address delete %s", | |
144 | c->ifp->name, buf); | |
145 | } | |
146 | ||
147 | ifp = c->ifp; | |
148 | p = *c->address; | |
149 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
150 | ||
151 | rn = route_node_lookup(IF_OIFS(ifp), &p); | |
152 | if (!rn) { | |
153 | connected_free(&c); | |
154 | return 0; | |
155 | } | |
156 | ||
157 | assert(rn->info); | |
158 | oi = rn->info; | |
159 | route_unlock_node(rn); | |
160 | ||
161 | /* Call interface hook functions to clean up */ | |
162 | ospf_if_free(oi); | |
163 | ||
164 | ospf_if_interface(c->ifp); | |
165 | ||
166 | connected_free(&c); | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | static int ospf_interface_link_params(ZAPI_CALLBACK_ARGS) | |
172 | { | |
173 | struct interface *ifp; | |
174 | ||
175 | ifp = zebra_interface_link_params_read(zclient->ibuf, vrf_id); | |
176 | ||
177 | if (ifp == NULL) | |
178 | return 0; | |
179 | ||
180 | /* Update TE TLV */ | |
181 | ospf_mpls_te_update_if(ifp); | |
182 | ||
183 | return 0; | |
184 | } | |
185 | ||
186 | /* VRF update for an interface. */ | |
187 | static int ospf_interface_vrf_update(ZAPI_CALLBACK_ARGS) | |
188 | { | |
189 | struct interface *ifp = NULL; | |
190 | vrf_id_t new_vrf_id; | |
191 | ||
192 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
193 | &new_vrf_id); | |
194 | if (!ifp) | |
195 | return 0; | |
196 | ||
197 | if (IS_DEBUG_OSPF_EVENT) | |
198 | zlog_debug( | |
199 | "%s: Rx Interface %s VRF change vrf_id %u New vrf %s id %u", | |
200 | __PRETTY_FUNCTION__, ifp->name, vrf_id, | |
201 | ospf_vrf_id_to_name(new_vrf_id), new_vrf_id); | |
202 | ||
203 | /*if_update(ifp, ifp->name, strlen(ifp->name), new_vrf_id);*/ | |
204 | if_update_to_new_vrf(ifp, new_vrf_id); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | void ospf_zebra_add(struct ospf *ospf, struct prefix_ipv4 *p, | |
210 | struct ospf_route * or) | |
211 | { | |
212 | struct zapi_route api; | |
213 | struct zapi_nexthop *api_nh; | |
214 | uint8_t distance; | |
215 | struct ospf_path *path; | |
216 | struct listnode *node; | |
217 | int count = 0; | |
218 | ||
219 | memset(&api, 0, sizeof(api)); | |
220 | api.vrf_id = ospf->vrf_id; | |
221 | api.type = ZEBRA_ROUTE_OSPF; | |
222 | api.instance = ospf->instance; | |
223 | api.safi = SAFI_UNICAST; | |
224 | ||
225 | memcpy(&api.prefix, p, sizeof(*p)); | |
226 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
227 | ||
228 | /* Metric value. */ | |
229 | SET_FLAG(api.message, ZAPI_MESSAGE_METRIC); | |
230 | if (or->path_type == OSPF_PATH_TYPE1_EXTERNAL) | |
231 | api.metric = or->cost + or->u.ext.type2_cost; | |
232 | else if (or->path_type == OSPF_PATH_TYPE2_EXTERNAL) | |
233 | api.metric = or->u.ext.type2_cost; | |
234 | else | |
235 | api.metric = or->cost; | |
236 | ||
237 | /* Check if path type is ASE */ | |
238 | if (((or->path_type == OSPF_PATH_TYPE1_EXTERNAL) | |
239 | || (or->path_type == OSPF_PATH_TYPE2_EXTERNAL)) | |
240 | && (or->u.ext.tag > 0) && (or->u.ext.tag <= ROUTE_TAG_MAX)) { | |
241 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
242 | api.tag = or->u.ext.tag; | |
243 | } | |
244 | ||
245 | /* Distance value. */ | |
246 | distance = ospf_distance_apply(ospf, p, or); | |
247 | if (distance) { | |
248 | SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE); | |
249 | api.distance = distance; | |
250 | } | |
251 | ||
252 | /* Nexthop, ifindex, distance and metric information. */ | |
253 | for (ALL_LIST_ELEMENTS_RO(or->paths, node, path)) { | |
254 | if (count >= MULTIPATH_NUM) | |
255 | break; | |
256 | api_nh = &api.nexthops[count]; | |
257 | #ifdef HAVE_NETLINK | |
258 | if (path->unnumbered || (path->nexthop.s_addr != INADDR_ANY | |
259 | && path->ifindex != 0)) { | |
260 | #else /* HAVE_NETLINK */ | |
261 | if (path->nexthop.s_addr != INADDR_ANY && path->ifindex != 0) { | |
262 | #endif /* HAVE_NETLINK */ | |
263 | api_nh->gate.ipv4 = path->nexthop; | |
264 | api_nh->ifindex = path->ifindex; | |
265 | api_nh->type = NEXTHOP_TYPE_IPV4_IFINDEX; | |
266 | } else if (path->nexthop.s_addr != INADDR_ANY) { | |
267 | api_nh->gate.ipv4 = path->nexthop; | |
268 | api_nh->type = NEXTHOP_TYPE_IPV4; | |
269 | } else { | |
270 | api_nh->ifindex = path->ifindex; | |
271 | api_nh->type = NEXTHOP_TYPE_IFINDEX; | |
272 | } | |
273 | api_nh->vrf_id = ospf->vrf_id; | |
274 | count++; | |
275 | ||
276 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) { | |
277 | char buf[2][INET_ADDRSTRLEN]; | |
278 | struct interface *ifp; | |
279 | ||
280 | ifp = if_lookup_by_index(path->ifindex, ospf->vrf_id); | |
281 | ||
282 | zlog_debug( | |
283 | "Zebra: Route add %s nexthop %s, ifindex=%d %s", | |
284 | prefix2str(p, buf[0], sizeof(buf[0])), | |
285 | inet_ntop(AF_INET, &path->nexthop, | |
286 | buf[1], sizeof(buf[1])), | |
287 | path->ifindex, ifp ? ifp->name : " "); | |
288 | } | |
289 | } | |
290 | api.nexthop_num = count; | |
291 | ||
292 | zclient_route_send(ZEBRA_ROUTE_ADD, zclient, &api); | |
293 | } | |
294 | ||
295 | void ospf_zebra_delete(struct ospf *ospf, struct prefix_ipv4 *p, | |
296 | struct ospf_route * or) | |
297 | { | |
298 | struct zapi_route api; | |
299 | ||
300 | memset(&api, 0, sizeof(api)); | |
301 | api.vrf_id = ospf->vrf_id; | |
302 | api.type = ZEBRA_ROUTE_OSPF; | |
303 | api.instance = ospf->instance; | |
304 | api.safi = SAFI_UNICAST; | |
305 | memcpy(&api.prefix, p, sizeof(*p)); | |
306 | ||
307 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) { | |
308 | char buf[PREFIX2STR_BUFFER]; | |
309 | zlog_debug("Zebra: Route delete %s", | |
310 | prefix2str(p, buf, sizeof(buf))); | |
311 | } | |
312 | ||
313 | zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api); | |
314 | } | |
315 | ||
316 | void ospf_zebra_add_discard(struct ospf *ospf, struct prefix_ipv4 *p) | |
317 | { | |
318 | struct zapi_route api; | |
319 | ||
320 | memset(&api, 0, sizeof(api)); | |
321 | api.vrf_id = ospf->vrf_id; | |
322 | api.type = ZEBRA_ROUTE_OSPF; | |
323 | api.instance = ospf->instance; | |
324 | api.safi = SAFI_UNICAST; | |
325 | memcpy(&api.prefix, p, sizeof(*p)); | |
326 | zapi_route_set_blackhole(&api, BLACKHOLE_NULL); | |
327 | ||
328 | zclient_route_send(ZEBRA_ROUTE_ADD, zclient, &api); | |
329 | ||
330 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) { | |
331 | char buf[PREFIX2STR_BUFFER]; | |
332 | zlog_debug("Zebra: Route add discard %s", | |
333 | prefix2str(p, buf, sizeof(buf))); | |
334 | } | |
335 | } | |
336 | ||
337 | void ospf_zebra_delete_discard(struct ospf *ospf, struct prefix_ipv4 *p) | |
338 | { | |
339 | struct zapi_route api; | |
340 | ||
341 | memset(&api, 0, sizeof(api)); | |
342 | api.vrf_id = ospf->vrf_id; | |
343 | api.type = ZEBRA_ROUTE_OSPF; | |
344 | api.instance = ospf->instance; | |
345 | api.safi = SAFI_UNICAST; | |
346 | memcpy(&api.prefix, p, sizeof(*p)); | |
347 | zapi_route_set_blackhole(&api, BLACKHOLE_NULL); | |
348 | ||
349 | zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api); | |
350 | ||
351 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) { | |
352 | char buf[PREFIX2STR_BUFFER]; | |
353 | zlog_debug("Zebra: Route delete discard %s", | |
354 | prefix2str(p, buf, sizeof(buf))); | |
355 | } | |
356 | } | |
357 | ||
358 | struct ospf_external *ospf_external_lookup(struct ospf *ospf, uint8_t type, | |
359 | unsigned short instance) | |
360 | { | |
361 | struct list *ext_list; | |
362 | struct listnode *node; | |
363 | struct ospf_external *ext; | |
364 | ||
365 | ext_list = ospf->external[type]; | |
366 | if (!ext_list) | |
367 | return (NULL); | |
368 | ||
369 | for (ALL_LIST_ELEMENTS_RO(ext_list, node, ext)) | |
370 | if (ext->instance == instance) | |
371 | return ext; | |
372 | ||
373 | return NULL; | |
374 | } | |
375 | ||
376 | struct ospf_external *ospf_external_add(struct ospf *ospf, uint8_t type, | |
377 | unsigned short instance) | |
378 | { | |
379 | struct list *ext_list; | |
380 | struct ospf_external *ext; | |
381 | ||
382 | ext = ospf_external_lookup(ospf, type, instance); | |
383 | if (ext) | |
384 | return ext; | |
385 | ||
386 | if (!ospf->external[type]) | |
387 | ospf->external[type] = list_new(); | |
388 | ||
389 | ext_list = ospf->external[type]; | |
390 | ext = XCALLOC(MTYPE_OSPF_EXTERNAL, sizeof(struct ospf_external)); | |
391 | ext->instance = instance; | |
392 | EXTERNAL_INFO(ext) = route_table_init(); | |
393 | ||
394 | listnode_add(ext_list, ext); | |
395 | ||
396 | return ext; | |
397 | } | |
398 | ||
399 | void ospf_external_del(struct ospf *ospf, uint8_t type, unsigned short instance) | |
400 | { | |
401 | struct ospf_external *ext; | |
402 | ||
403 | ext = ospf_external_lookup(ospf, type, instance); | |
404 | ||
405 | if (ext) { | |
406 | if (EXTERNAL_INFO(ext)) | |
407 | route_table_finish(EXTERNAL_INFO(ext)); | |
408 | ||
409 | listnode_delete(ospf->external[type], ext); | |
410 | ||
411 | if (!ospf->external[type]->count) | |
412 | list_delete(&ospf->external[type]); | |
413 | ||
414 | XFREE(MTYPE_OSPF_EXTERNAL, ext); | |
415 | } | |
416 | } | |
417 | ||
418 | struct ospf_redist *ospf_redist_lookup(struct ospf *ospf, uint8_t type, | |
419 | unsigned short instance) | |
420 | { | |
421 | struct list *red_list; | |
422 | struct listnode *node; | |
423 | struct ospf_redist *red; | |
424 | ||
425 | red_list = ospf->redist[type]; | |
426 | if (!red_list) | |
427 | return (NULL); | |
428 | ||
429 | for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) | |
430 | if (red->instance == instance) | |
431 | return red; | |
432 | ||
433 | return NULL; | |
434 | } | |
435 | ||
436 | struct ospf_redist *ospf_redist_add(struct ospf *ospf, uint8_t type, | |
437 | unsigned short instance) | |
438 | { | |
439 | struct list *red_list; | |
440 | struct ospf_redist *red; | |
441 | ||
442 | red = ospf_redist_lookup(ospf, type, instance); | |
443 | if (red) | |
444 | return red; | |
445 | ||
446 | if (!ospf->redist[type]) | |
447 | ospf->redist[type] = list_new(); | |
448 | ||
449 | red_list = ospf->redist[type]; | |
450 | red = XCALLOC(MTYPE_OSPF_REDISTRIBUTE, sizeof(struct ospf_redist)); | |
451 | red->instance = instance; | |
452 | red->dmetric.type = -1; | |
453 | red->dmetric.value = -1; | |
454 | ROUTEMAP_NAME(red) = NULL; | |
455 | ROUTEMAP(red) = NULL; | |
456 | ||
457 | listnode_add(red_list, red); | |
458 | ||
459 | return red; | |
460 | } | |
461 | ||
462 | void ospf_redist_del(struct ospf *ospf, uint8_t type, unsigned short instance) | |
463 | { | |
464 | struct ospf_redist *red; | |
465 | ||
466 | red = ospf_redist_lookup(ospf, type, instance); | |
467 | ||
468 | if (red) { | |
469 | listnode_delete(ospf->redist[type], red); | |
470 | if (!ospf->redist[type]->count) { | |
471 | list_delete(&ospf->redist[type]); | |
472 | } | |
473 | ospf_routemap_unset(red); | |
474 | XFREE(MTYPE_OSPF_REDISTRIBUTE, red); | |
475 | } | |
476 | } | |
477 | ||
478 | ||
479 | int ospf_is_type_redistributed(struct ospf *ospf, int type, | |
480 | unsigned short instance) | |
481 | { | |
482 | return (DEFAULT_ROUTE_TYPE(type) | |
483 | ? vrf_bitmap_check(zclient->default_information[AFI_IP], | |
484 | ospf->vrf_id) | |
485 | : ((instance | |
486 | && redist_check_instance( | |
487 | &zclient->mi_redist[AFI_IP][type], | |
488 | instance)) | |
489 | || (!instance | |
490 | && vrf_bitmap_check( | |
491 | zclient->redist[AFI_IP][type], | |
492 | ospf->vrf_id)))); | |
493 | } | |
494 | ||
495 | int ospf_redistribute_set(struct ospf *ospf, int type, unsigned short instance, | |
496 | int mtype, int mvalue) | |
497 | { | |
498 | int force = 0; | |
499 | struct ospf_redist *red; | |
500 | ||
501 | red = ospf_redist_lookup(ospf, type, instance); | |
502 | ||
503 | if (red == NULL) { | |
504 | zlog_err( | |
505 | "Redistribute[%s][%d]: Lookup failed Type[%d] , Metric[%d]", | |
506 | ospf_redist_string(type), instance, | |
507 | metric_type(ospf, type, instance), | |
508 | metric_value(ospf, type, instance)); | |
509 | return CMD_WARNING_CONFIG_FAILED; | |
510 | } | |
511 | ||
512 | if (ospf_is_type_redistributed(ospf, type, instance)) { | |
513 | if (mtype != red->dmetric.type) { | |
514 | red->dmetric.type = mtype; | |
515 | force = LSA_REFRESH_FORCE; | |
516 | } | |
517 | if (mvalue != red->dmetric.value) { | |
518 | red->dmetric.value = mvalue; | |
519 | force = LSA_REFRESH_FORCE; | |
520 | } | |
521 | ||
522 | ospf_external_lsa_refresh_type(ospf, type, instance, force); | |
523 | ||
524 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) | |
525 | zlog_debug( | |
526 | "Redistribute[%s][%d]: Refresh Type[%d], Metric[%d]", | |
527 | ospf_redist_string(type), instance, | |
528 | metric_type(ospf, type, instance), | |
529 | metric_value(ospf, type, instance)); | |
530 | ||
531 | return CMD_SUCCESS; | |
532 | } | |
533 | ||
534 | red->dmetric.type = mtype; | |
535 | red->dmetric.value = mvalue; | |
536 | ||
537 | ospf_external_add(ospf, type, instance); | |
538 | ||
539 | zclient_redistribute(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP, type, | |
540 | instance, ospf->vrf_id); | |
541 | ||
542 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) | |
543 | zlog_debug( | |
544 | "Redistribute[%s][%d] vrf id %u: Start Type[%d], Metric[%d]", | |
545 | ospf_redist_string(type), instance, ospf->vrf_id, | |
546 | metric_type(ospf, type, instance), | |
547 | metric_value(ospf, type, instance)); | |
548 | ||
549 | ospf_asbr_status_update(ospf, ++ospf->redistribute); | |
550 | ||
551 | return CMD_SUCCESS; | |
552 | } | |
553 | ||
554 | int ospf_redistribute_unset(struct ospf *ospf, int type, | |
555 | unsigned short instance) | |
556 | { | |
557 | if (type == zclient->redist_default && instance == zclient->instance) | |
558 | return CMD_SUCCESS; | |
559 | ||
560 | if (!ospf_is_type_redistributed(ospf, type, instance)) | |
561 | return CMD_SUCCESS; | |
562 | ||
563 | zclient_redistribute(ZEBRA_REDISTRIBUTE_DELETE, zclient, AFI_IP, type, | |
564 | instance, ospf->vrf_id); | |
565 | ||
566 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) | |
567 | zlog_debug("Redistribute[%s][%d] vrf id %u: Stop", | |
568 | ospf_redist_string(type), instance, ospf->vrf_id); | |
569 | ||
570 | /* Remove the routes from OSPF table. */ | |
571 | ospf_redistribute_withdraw(ospf, type, instance); | |
572 | ||
573 | ospf_external_del(ospf, type, instance); | |
574 | ||
575 | ospf_asbr_status_update(ospf, --ospf->redistribute); | |
576 | ||
577 | return CMD_SUCCESS; | |
578 | } | |
579 | ||
580 | int ospf_redistribute_default_set(struct ospf *ospf, int originate, int mtype, | |
581 | int mvalue) | |
582 | { | |
583 | struct prefix_ipv4 p; | |
584 | struct in_addr nexthop; | |
585 | int cur_originate = ospf->default_originate; | |
586 | const char *type_str = NULL; | |
587 | ||
588 | nexthop.s_addr = 0; | |
589 | p.family = AF_INET; | |
590 | p.prefix.s_addr = 0; | |
591 | p.prefixlen = 0; | |
592 | ||
593 | ospf->default_originate = originate; | |
594 | ||
595 | if (cur_originate == originate) { | |
596 | /* Refresh the lsa since metric might different */ | |
597 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) | |
598 | zlog_debug( | |
599 | "Redistribute[%s]: Refresh Type[%d], Metric[%d]", | |
600 | ospf_redist_string(DEFAULT_ROUTE), | |
601 | metric_type(ospf, DEFAULT_ROUTE, 0), | |
602 | metric_value(ospf, DEFAULT_ROUTE, 0)); | |
603 | ||
604 | ospf_external_lsa_refresh_default(ospf); | |
605 | return CMD_SUCCESS; | |
606 | } | |
607 | ||
608 | switch (cur_originate) { | |
609 | case DEFAULT_ORIGINATE_NONE: | |
610 | break; | |
611 | case DEFAULT_ORIGINATE_ZEBRA: | |
612 | zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_DELETE, | |
613 | zclient, AFI_IP, ospf->vrf_id); | |
614 | ospf->redistribute--; | |
615 | break; | |
616 | case DEFAULT_ORIGINATE_ALWAYS: | |
617 | ospf_external_info_delete(ospf, DEFAULT_ROUTE, 0, p); | |
618 | ospf_external_del(ospf, DEFAULT_ROUTE, 0); | |
619 | ospf->redistribute--; | |
620 | break; | |
621 | } | |
622 | ||
623 | switch (originate) { | |
624 | case DEFAULT_ORIGINATE_NONE: | |
625 | type_str = "none"; | |
626 | break; | |
627 | case DEFAULT_ORIGINATE_ZEBRA: | |
628 | type_str = "normal"; | |
629 | ospf->redistribute++; | |
630 | zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_ADD, | |
631 | zclient, AFI_IP, ospf->vrf_id); | |
632 | break; | |
633 | case DEFAULT_ORIGINATE_ALWAYS: | |
634 | type_str = "always"; | |
635 | ospf->redistribute++; | |
636 | ospf_external_add(ospf, DEFAULT_ROUTE, 0); | |
637 | ospf_external_info_add(ospf, DEFAULT_ROUTE, 0, p, 0, nexthop, | |
638 | 0); | |
639 | break; | |
640 | } | |
641 | ||
642 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) | |
643 | zlog_debug("Redistribute[DEFAULT]: %s Type[%d], Metric[%d]", | |
644 | type_str, | |
645 | metric_type(ospf, DEFAULT_ROUTE, 0), | |
646 | metric_value(ospf, DEFAULT_ROUTE, 0)); | |
647 | ||
648 | ospf_external_lsa_refresh_default(ospf); | |
649 | ospf_asbr_status_update(ospf, ospf->redistribute); | |
650 | return CMD_SUCCESS; | |
651 | } | |
652 | ||
653 | static int ospf_external_lsa_originate_check(struct ospf *ospf, | |
654 | struct external_info *ei) | |
655 | { | |
656 | /* If prefix is multicast, then do not originate LSA. */ | |
657 | if (IN_MULTICAST(htonl(ei->p.prefix.s_addr))) { | |
658 | zlog_info( | |
659 | "LSA[Type5:%s]: Not originate AS-external-LSA, " | |
660 | "Prefix belongs multicast", | |
661 | inet_ntoa(ei->p.prefix)); | |
662 | return 0; | |
663 | } | |
664 | ||
665 | /* Take care of default-originate. */ | |
666 | if (is_prefix_default(&ei->p)) | |
667 | if (ospf->default_originate == DEFAULT_ORIGINATE_NONE) { | |
668 | zlog_info( | |
669 | "LSA[Type5:0.0.0.0]: Not originate AS-external-LSA " | |
670 | "for default"); | |
671 | return 0; | |
672 | } | |
673 | ||
674 | return 1; | |
675 | } | |
676 | ||
677 | /* If connected prefix is OSPF enable interface, then do not announce. */ | |
678 | int ospf_distribute_check_connected(struct ospf *ospf, struct external_info *ei) | |
679 | { | |
680 | struct listnode *node; | |
681 | struct ospf_interface *oi; | |
682 | ||
683 | ||
684 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) | |
685 | if (prefix_match(oi->address, (struct prefix *)&ei->p)) | |
686 | return 0; | |
687 | return 1; | |
688 | } | |
689 | ||
690 | /* return 1 if external LSA must be originated, 0 otherwise */ | |
691 | int ospf_redistribute_check(struct ospf *ospf, struct external_info *ei, | |
692 | int *changed) | |
693 | { | |
694 | struct route_map_set_values save_values; | |
695 | struct prefix_ipv4 *p = &ei->p; | |
696 | struct ospf_redist *red; | |
697 | uint8_t type = is_prefix_default(&ei->p) ? DEFAULT_ROUTE : ei->type; | |
698 | unsigned short instance = is_prefix_default(&ei->p) ? 0 : ei->instance; | |
699 | ||
700 | if (changed) | |
701 | *changed = 0; | |
702 | ||
703 | if (!ospf_external_lsa_originate_check(ospf, ei)) | |
704 | return 0; | |
705 | ||
706 | /* Take care connected route. */ | |
707 | if (type == ZEBRA_ROUTE_CONNECT | |
708 | && !ospf_distribute_check_connected(ospf, ei)) | |
709 | return 0; | |
710 | ||
711 | if (!DEFAULT_ROUTE_TYPE(type) && DISTRIBUTE_NAME(ospf, type)) | |
712 | /* distirbute-list exists, but access-list may not? */ | |
713 | if (DISTRIBUTE_LIST(ospf, type)) | |
714 | if (access_list_apply(DISTRIBUTE_LIST(ospf, type), p) | |
715 | == FILTER_DENY) { | |
716 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) { | |
717 | char buf[PREFIX2STR_BUFFER]; | |
718 | zlog_debug( | |
719 | "Redistribute[%s]: %s filtered by distribute-list.", | |
720 | ospf_redist_string(type), | |
721 | prefix2str(p, buf, sizeof(buf))); | |
722 | } | |
723 | return 0; | |
724 | } | |
725 | ||
726 | save_values = ei->route_map_set; | |
727 | ospf_reset_route_map_set_values(&ei->route_map_set); | |
728 | ||
729 | /* apply route-map if needed */ | |
730 | red = ospf_redist_lookup(ospf, type, instance); | |
731 | if (red && ROUTEMAP_NAME(red)) { | |
732 | route_map_result_t ret; | |
733 | ||
734 | ret = route_map_apply(ROUTEMAP(red), (struct prefix *)p, | |
735 | RMAP_OSPF, ei); | |
736 | ||
737 | if (ret == RMAP_DENYMATCH) { | |
738 | ei->route_map_set = save_values; | |
739 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) { | |
740 | char buf[PREFIX2STR_BUFFER]; | |
741 | zlog_debug( | |
742 | "Redistribute[%s]: %s filtered by route-map.", | |
743 | ospf_redist_string(type), | |
744 | prefix2str(p, buf, sizeof(buf))); | |
745 | } | |
746 | return 0; | |
747 | } | |
748 | ||
749 | /* check if 'route-map set' changed something */ | |
750 | if (changed) | |
751 | *changed = !ospf_route_map_set_compare( | |
752 | &ei->route_map_set, &save_values); | |
753 | } | |
754 | ||
755 | return 1; | |
756 | } | |
757 | ||
758 | /* OSPF route-map set for redistribution */ | |
759 | void ospf_routemap_set(struct ospf_redist *red, const char *name) | |
760 | { | |
761 | if (ROUTEMAP_NAME(red)) { | |
762 | route_map_counter_decrement(ROUTEMAP(red)); | |
763 | free(ROUTEMAP_NAME(red)); | |
764 | } | |
765 | ||
766 | ROUTEMAP_NAME(red) = strdup(name); | |
767 | ROUTEMAP(red) = route_map_lookup_by_name(name); | |
768 | route_map_counter_increment(ROUTEMAP(red)); | |
769 | } | |
770 | ||
771 | void ospf_routemap_unset(struct ospf_redist *red) | |
772 | { | |
773 | if (ROUTEMAP_NAME(red)) { | |
774 | route_map_counter_decrement(ROUTEMAP(red)); | |
775 | free(ROUTEMAP_NAME(red)); | |
776 | } | |
777 | ||
778 | ROUTEMAP_NAME(red) = NULL; | |
779 | ROUTEMAP(red) = NULL; | |
780 | } | |
781 | ||
782 | /* Zebra route add and delete treatment. */ | |
783 | static int ospf_zebra_read_route(ZAPI_CALLBACK_ARGS) | |
784 | { | |
785 | struct zapi_route api; | |
786 | struct prefix_ipv4 p; | |
787 | unsigned long ifindex; | |
788 | struct in_addr nexthop; | |
789 | struct external_info *ei; | |
790 | struct ospf *ospf; | |
791 | int i; | |
792 | uint8_t rt_type; | |
793 | ||
794 | ospf = ospf_lookup_by_vrf_id(vrf_id); | |
795 | if (ospf == NULL) | |
796 | return 0; | |
797 | ||
798 | if (zapi_route_decode(zclient->ibuf, &api) < 0) | |
799 | return -1; | |
800 | ||
801 | ifindex = api.nexthops[0].ifindex; | |
802 | nexthop = api.nexthops[0].gate.ipv4; | |
803 | rt_type = api.type; | |
804 | ||
805 | memcpy(&p, &api.prefix, sizeof(p)); | |
806 | if (IPV4_NET127(ntohl(p.prefix.s_addr))) | |
807 | return 0; | |
808 | ||
809 | /* Re-destributed route is default route. | |
810 | * Here, route type is used as 'ZEBRA_ROUTE_KERNEL' for | |
811 | * updating ex-info. But in resetting (no default-info | |
812 | * originate)ZEBRA_ROUTE_MAX is used to delete the ex-info. | |
813 | * Resolved this inconsistency by maintaining same route type. | |
814 | */ | |
815 | if (is_prefix_default(&p)) | |
816 | rt_type = DEFAULT_ROUTE; | |
817 | ||
818 | if (IS_DEBUG_OSPF(zebra, ZEBRA_REDISTRIBUTE)) { | |
819 | char buf_prefix[PREFIX_STRLEN]; | |
820 | prefix2str(&api.prefix, buf_prefix, sizeof(buf_prefix)); | |
821 | ||
822 | zlog_debug("%s: cmd %s from client %s: vrf_id %d, p %s", | |
823 | __func__, zserv_command_string(cmd), | |
824 | zebra_route_string(api.type), vrf_id, buf_prefix); | |
825 | } | |
826 | ||
827 | if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD) { | |
828 | /* XXX|HACK|TODO|FIXME: | |
829 | * Maybe we should ignore reject/blackhole routes? Testing | |
830 | * shows that there is no problems though and this is only way | |
831 | * to "summarize" routes in ASBR at the moment. Maybe we need | |
832 | * just a better generalised solution for these types? | |
833 | */ | |
834 | ||
835 | /* Protocol tag overwrites all other tag value sent by zebra */ | |
836 | if (ospf->dtag[rt_type] > 0) | |
837 | api.tag = ospf->dtag[rt_type]; | |
838 | ||
839 | /* | |
840 | * Given zebra sends update for a prefix via ADD message, it | |
841 | * should | |
842 | * be considered as an implicit DEL for that prefix with other | |
843 | * source | |
844 | * types. | |
845 | */ | |
846 | for (i = 0; i <= ZEBRA_ROUTE_MAX; i++) | |
847 | if (i != rt_type) | |
848 | ospf_external_info_delete(ospf, i, api.instance, | |
849 | p); | |
850 | ||
851 | ei = ospf_external_info_add(ospf, rt_type, api.instance, p, | |
852 | ifindex, nexthop, api.tag); | |
853 | if (ei == NULL) { | |
854 | /* Nothing has changed, so nothing to do; return */ | |
855 | return 0; | |
856 | } | |
857 | if (ospf->router_id.s_addr != 0) { | |
858 | if (ei) { | |
859 | if (is_prefix_default(&p)) | |
860 | ospf_external_lsa_refresh_default(ospf); | |
861 | else { | |
862 | struct ospf_lsa *current; | |
863 | ||
864 | current = ospf_external_info_find_lsa( | |
865 | ospf, &ei->p); | |
866 | if (!current) | |
867 | ospf_external_lsa_originate( | |
868 | ospf, ei); | |
869 | else { | |
870 | if (IS_DEBUG_OSPF( | |
871 | zebra, | |
872 | ZEBRA_REDISTRIBUTE)) | |
873 | zlog_debug( | |
874 | "ospf_zebra_read_route() : %s refreshing LSA", | |
875 | inet_ntoa( | |
876 | p.prefix)); | |
877 | ospf_external_lsa_refresh( | |
878 | ospf, current, ei, | |
879 | LSA_REFRESH_FORCE); | |
880 | } | |
881 | } | |
882 | } | |
883 | } | |
884 | } else /* if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_DEL) */ | |
885 | { | |
886 | ospf_external_info_delete(ospf, rt_type, api.instance, p); | |
887 | if (is_prefix_default(&p)) | |
888 | ospf_external_lsa_refresh_default(ospf); | |
889 | else | |
890 | ospf_external_lsa_flush(ospf, rt_type, &p, | |
891 | ifindex /*, nexthop */); | |
892 | } | |
893 | ||
894 | return 0; | |
895 | } | |
896 | ||
897 | ||
898 | int ospf_distribute_list_out_set(struct ospf *ospf, int type, const char *name) | |
899 | { | |
900 | /* Lookup access-list for distribute-list. */ | |
901 | DISTRIBUTE_LIST(ospf, type) = access_list_lookup(AFI_IP, name); | |
902 | ||
903 | /* Clear previous distribute-name. */ | |
904 | if (DISTRIBUTE_NAME(ospf, type)) | |
905 | free(DISTRIBUTE_NAME(ospf, type)); | |
906 | ||
907 | /* Set distribute-name. */ | |
908 | DISTRIBUTE_NAME(ospf, type) = strdup(name); | |
909 | ||
910 | /* If access-list have been set, schedule update timer. */ | |
911 | if (DISTRIBUTE_LIST(ospf, type)) | |
912 | ospf_distribute_list_update(ospf, type, 0); | |
913 | ||
914 | return CMD_SUCCESS; | |
915 | } | |
916 | ||
917 | int ospf_distribute_list_out_unset(struct ospf *ospf, int type, | |
918 | const char *name) | |
919 | { | |
920 | /* Schedule update timer. */ | |
921 | if (DISTRIBUTE_LIST(ospf, type)) | |
922 | ospf_distribute_list_update(ospf, type, 0); | |
923 | ||
924 | /* Unset distribute-list. */ | |
925 | DISTRIBUTE_LIST(ospf, type) = NULL; | |
926 | ||
927 | /* Clear distribute-name. */ | |
928 | if (DISTRIBUTE_NAME(ospf, type)) | |
929 | free(DISTRIBUTE_NAME(ospf, type)); | |
930 | ||
931 | DISTRIBUTE_NAME(ospf, type) = NULL; | |
932 | ||
933 | return CMD_SUCCESS; | |
934 | } | |
935 | ||
936 | /* distribute-list update timer. */ | |
937 | static int ospf_distribute_list_update_timer(struct thread *thread) | |
938 | { | |
939 | struct route_node *rn; | |
940 | struct external_info *ei; | |
941 | struct route_table *rt; | |
942 | struct ospf_lsa *lsa; | |
943 | int type, default_refresh = 0, arg_type; | |
944 | struct ospf *ospf = NULL; | |
945 | void **arg = THREAD_ARG(thread); | |
946 | ||
947 | ospf = (struct ospf *)arg[0]; | |
948 | arg_type = (int)(intptr_t)arg[1]; | |
949 | ||
950 | if (ospf == NULL) | |
951 | return 0; | |
952 | ||
953 | ospf->t_distribute_update = NULL; | |
954 | ||
955 | zlog_info("Zebra[Redistribute]: distribute-list update timer fired!"); | |
956 | ||
957 | if (IS_DEBUG_OSPF_EVENT) { | |
958 | zlog_debug( | |
959 | "%s: ospf distribute-list update arg_type %d vrf %s id %d", | |
960 | __PRETTY_FUNCTION__, arg_type, | |
961 | ospf_vrf_id_to_name(ospf->vrf_id), ospf->vrf_id); | |
962 | } | |
963 | ||
964 | /* foreach all external info. */ | |
965 | for (type = 0; type <= ZEBRA_ROUTE_MAX; type++) { | |
966 | struct list *ext_list; | |
967 | struct listnode *node; | |
968 | struct ospf_external *ext; | |
969 | ||
970 | ext_list = ospf->external[type]; | |
971 | if (!ext_list) | |
972 | continue; | |
973 | ||
974 | for (ALL_LIST_ELEMENTS_RO(ext_list, node, ext)) { | |
975 | rt = ext->external_info; | |
976 | if (!rt) | |
977 | continue; | |
978 | for (rn = route_top(rt); rn; rn = route_next(rn)) | |
979 | if ((ei = rn->info) != NULL) { | |
980 | if (is_prefix_default(&ei->p)) | |
981 | default_refresh = 1; | |
982 | else if ( | |
983 | (lsa = ospf_external_info_find_lsa( | |
984 | ospf, &ei->p))) | |
985 | ospf_external_lsa_refresh( | |
986 | ospf, lsa, ei, | |
987 | LSA_REFRESH_IF_CHANGED); | |
988 | else | |
989 | ospf_external_lsa_originate( | |
990 | ospf, ei); | |
991 | } | |
992 | } | |
993 | } | |
994 | if (default_refresh) | |
995 | ospf_external_lsa_refresh_default(ospf); | |
996 | ||
997 | XFREE(MTYPE_OSPF_DIST_ARGS, arg); | |
998 | return 0; | |
999 | } | |
1000 | ||
1001 | /* Update distribute-list and set timer to apply access-list. */ | |
1002 | void ospf_distribute_list_update(struct ospf *ospf, int type, | |
1003 | unsigned short instance) | |
1004 | { | |
1005 | struct route_table *rt; | |
1006 | struct ospf_external *ext; | |
1007 | void **args = XCALLOC(MTYPE_OSPF_DIST_ARGS, sizeof(void *) * 2); | |
1008 | ||
1009 | args[0] = ospf; | |
1010 | args[1] = (void *)((ptrdiff_t)type); | |
1011 | ||
1012 | /* External info does not exist. */ | |
1013 | ext = ospf_external_lookup(ospf, type, instance); | |
1014 | if (!ext || !(rt = EXTERNAL_INFO(ext))) { | |
1015 | XFREE(MTYPE_OSPF_DIST_ARGS, args); | |
1016 | return; | |
1017 | } | |
1018 | ||
1019 | /* If exists previously invoked thread, then let it continue. */ | |
1020 | if (ospf->t_distribute_update) { | |
1021 | XFREE(MTYPE_OSPF_DIST_ARGS, args); | |
1022 | return; | |
1023 | } | |
1024 | ||
1025 | /* Set timer. */ | |
1026 | ospf->t_distribute_update = NULL; | |
1027 | thread_add_timer_msec(master, ospf_distribute_list_update_timer, | |
1028 | (void **)args, ospf->min_ls_interval, | |
1029 | &ospf->t_distribute_update); | |
1030 | } | |
1031 | ||
1032 | /* If access-list is updated, apply some check. */ | |
1033 | static void ospf_filter_update(struct access_list *access) | |
1034 | { | |
1035 | struct ospf *ospf; | |
1036 | int type; | |
1037 | int abr_inv = 0; | |
1038 | struct ospf_area *area; | |
1039 | struct listnode *node, *n1; | |
1040 | ||
1041 | /* If OSPF instance does not exist, return right now. */ | |
1042 | if (listcount(om->ospf) == 0) | |
1043 | return; | |
1044 | ||
1045 | /* Iterate all ospf [VRF] instances */ | |
1046 | for (ALL_LIST_ELEMENTS_RO(om->ospf, n1, ospf)) { | |
1047 | /* Update distribute-list, and apply filter. */ | |
1048 | for (type = 0; type <= ZEBRA_ROUTE_MAX; type++) { | |
1049 | struct list *red_list; | |
1050 | struct ospf_redist *red; | |
1051 | ||
1052 | red_list = ospf->redist[type]; | |
1053 | if (red_list) | |
1054 | for (ALL_LIST_ELEMENTS_RO(red_list, node, | |
1055 | red)) { | |
1056 | if (ROUTEMAP(red)) { | |
1057 | /* if route-map is not NULL it | |
1058 | * may be | |
1059 | * using this access list */ | |
1060 | ospf_distribute_list_update( | |
1061 | ospf, type, | |
1062 | red->instance); | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | /* There is place for route-map for default-information | |
1067 | * (ZEBRA_ROUTE_MAX), | |
1068 | * but no distribute list. */ | |
1069 | if (type == ZEBRA_ROUTE_MAX) | |
1070 | break; | |
1071 | ||
1072 | if (DISTRIBUTE_NAME(ospf, type)) { | |
1073 | /* Keep old access-list for distribute-list. */ | |
1074 | struct access_list *old = | |
1075 | DISTRIBUTE_LIST(ospf, type); | |
1076 | ||
1077 | /* Update access-list for distribute-list. */ | |
1078 | DISTRIBUTE_LIST(ospf, type) = | |
1079 | access_list_lookup( | |
1080 | AFI_IP, | |
1081 | DISTRIBUTE_NAME(ospf, type)); | |
1082 | ||
1083 | /* No update for this distribute type. */ | |
1084 | if (old == NULL | |
1085 | && DISTRIBUTE_LIST(ospf, type) == NULL) | |
1086 | continue; | |
1087 | ||
1088 | /* Schedule distribute-list update timer. */ | |
1089 | if (DISTRIBUTE_LIST(ospf, type) == NULL | |
1090 | || strcmp(DISTRIBUTE_NAME(ospf, type), | |
1091 | access->name) | |
1092 | == 0) | |
1093 | ospf_distribute_list_update(ospf, type, | |
1094 | 0); | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | /* Update Area access-list. */ | |
1099 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, node, area)) { | |
1100 | if (EXPORT_NAME(area)) { | |
1101 | EXPORT_LIST(area) = NULL; | |
1102 | abr_inv++; | |
1103 | } | |
1104 | ||
1105 | if (IMPORT_NAME(area)) { | |
1106 | IMPORT_LIST(area) = NULL; | |
1107 | abr_inv++; | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | /* Schedule ABR tasks -- this will be changed -- takada. */ | |
1112 | if (IS_OSPF_ABR(ospf) && abr_inv) | |
1113 | ospf_schedule_abr_task(ospf); | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | /* If prefix-list is updated, do some updates. */ | |
1118 | void ospf_prefix_list_update(struct prefix_list *plist) | |
1119 | { | |
1120 | struct ospf *ospf = NULL; | |
1121 | int type; | |
1122 | int abr_inv = 0; | |
1123 | struct ospf_area *area; | |
1124 | struct listnode *node, *n1; | |
1125 | ||
1126 | /* If OSPF instatnce does not exist, return right now. */ | |
1127 | if (listcount(om->ospf) == 0) | |
1128 | return; | |
1129 | ||
1130 | /* Iterate all ospf [VRF] instances */ | |
1131 | for (ALL_LIST_ELEMENTS_RO(om->ospf, n1, ospf)) { | |
1132 | ||
1133 | /* Update all route-maps which are used | |
1134 | * as redistribution filters. | |
1135 | * They might use prefix-list. | |
1136 | */ | |
1137 | for (type = 0; type <= ZEBRA_ROUTE_MAX; type++) { | |
1138 | struct list *red_list; | |
1139 | struct ospf_redist *red; | |
1140 | ||
1141 | red_list = ospf->redist[type]; | |
1142 | if (red_list) { | |
1143 | for (ALL_LIST_ELEMENTS_RO(red_list, node, | |
1144 | red)) { | |
1145 | if (ROUTEMAP(red)) { | |
1146 | /* if route-map is not NULL | |
1147 | * it may be using | |
1148 | * this prefix list */ | |
1149 | ospf_distribute_list_update( | |
1150 | ospf, type, | |
1151 | red->instance); | |
1152 | } | |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | /* Update area filter-lists. */ | |
1158 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, node, area)) { | |
1159 | /* Update filter-list in. */ | |
1160 | if (PREFIX_NAME_IN(area)) | |
1161 | if (strcmp(PREFIX_NAME_IN(area), | |
1162 | prefix_list_name(plist)) | |
1163 | == 0) { | |
1164 | PREFIX_LIST_IN(area) = | |
1165 | prefix_list_lookup( | |
1166 | AFI_IP, | |
1167 | PREFIX_NAME_IN(area)); | |
1168 | abr_inv++; | |
1169 | } | |
1170 | ||
1171 | /* Update filter-list out. */ | |
1172 | if (PREFIX_NAME_OUT(area)) | |
1173 | if (strcmp(PREFIX_NAME_OUT(area), | |
1174 | prefix_list_name(plist)) | |
1175 | == 0) { | |
1176 | PREFIX_LIST_IN(area) = | |
1177 | prefix_list_lookup( | |
1178 | AFI_IP, | |
1179 | PREFIX_NAME_OUT(area)); | |
1180 | abr_inv++; | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | /* Schedule ABR task. */ | |
1185 | if (IS_OSPF_ABR(ospf) && abr_inv) | |
1186 | ospf_schedule_abr_task(ospf); | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | static struct ospf_distance *ospf_distance_new(void) | |
1191 | { | |
1192 | return XCALLOC(MTYPE_OSPF_DISTANCE, sizeof(struct ospf_distance)); | |
1193 | } | |
1194 | ||
1195 | static void ospf_distance_free(struct ospf_distance *odistance) | |
1196 | { | |
1197 | XFREE(MTYPE_OSPF_DISTANCE, odistance); | |
1198 | } | |
1199 | ||
1200 | int ospf_distance_set(struct vty *vty, struct ospf *ospf, | |
1201 | const char *distance_str, const char *ip_str, | |
1202 | const char *access_list_str) | |
1203 | { | |
1204 | int ret; | |
1205 | struct prefix_ipv4 p; | |
1206 | uint8_t distance; | |
1207 | struct route_node *rn; | |
1208 | struct ospf_distance *odistance; | |
1209 | ||
1210 | ret = str2prefix_ipv4(ip_str, &p); | |
1211 | if (ret == 0) { | |
1212 | vty_out(vty, "Malformed prefix\n"); | |
1213 | return CMD_WARNING_CONFIG_FAILED; | |
1214 | } | |
1215 | ||
1216 | distance = atoi(distance_str); | |
1217 | ||
1218 | /* Get OSPF distance node. */ | |
1219 | rn = route_node_get(ospf->distance_table, (struct prefix *)&p); | |
1220 | if (rn->info) { | |
1221 | odistance = rn->info; | |
1222 | route_unlock_node(rn); | |
1223 | } else { | |
1224 | odistance = ospf_distance_new(); | |
1225 | rn->info = odistance; | |
1226 | } | |
1227 | ||
1228 | /* Set distance value. */ | |
1229 | odistance->distance = distance; | |
1230 | ||
1231 | /* Reset access-list configuration. */ | |
1232 | if (odistance->access_list) { | |
1233 | free(odistance->access_list); | |
1234 | odistance->access_list = NULL; | |
1235 | } | |
1236 | if (access_list_str) | |
1237 | odistance->access_list = strdup(access_list_str); | |
1238 | ||
1239 | return CMD_SUCCESS; | |
1240 | } | |
1241 | ||
1242 | int ospf_distance_unset(struct vty *vty, struct ospf *ospf, | |
1243 | const char *distance_str, const char *ip_str, | |
1244 | char const *access_list_str) | |
1245 | { | |
1246 | int ret; | |
1247 | struct prefix_ipv4 p; | |
1248 | struct route_node *rn; | |
1249 | struct ospf_distance *odistance; | |
1250 | ||
1251 | ret = str2prefix_ipv4(ip_str, &p); | |
1252 | if (ret == 0) { | |
1253 | vty_out(vty, "Malformed prefix\n"); | |
1254 | return CMD_WARNING_CONFIG_FAILED; | |
1255 | } | |
1256 | ||
1257 | rn = route_node_lookup(ospf->distance_table, (struct prefix *)&p); | |
1258 | if (!rn) { | |
1259 | vty_out(vty, "Can't find specified prefix\n"); | |
1260 | return CMD_WARNING_CONFIG_FAILED; | |
1261 | } | |
1262 | ||
1263 | odistance = rn->info; | |
1264 | ||
1265 | if (odistance->access_list) | |
1266 | free(odistance->access_list); | |
1267 | ospf_distance_free(odistance); | |
1268 | ||
1269 | rn->info = NULL; | |
1270 | route_unlock_node(rn); | |
1271 | route_unlock_node(rn); | |
1272 | ||
1273 | return CMD_SUCCESS; | |
1274 | } | |
1275 | ||
1276 | void ospf_distance_reset(struct ospf *ospf) | |
1277 | { | |
1278 | struct route_node *rn; | |
1279 | struct ospf_distance *odistance; | |
1280 | ||
1281 | for (rn = route_top(ospf->distance_table); rn; rn = route_next(rn)) | |
1282 | if ((odistance = rn->info) != NULL) { | |
1283 | if (odistance->access_list) | |
1284 | free(odistance->access_list); | |
1285 | ospf_distance_free(odistance); | |
1286 | rn->info = NULL; | |
1287 | route_unlock_node(rn); | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | uint8_t ospf_distance_apply(struct ospf *ospf, struct prefix_ipv4 *p, | |
1292 | struct ospf_route * or) | |
1293 | { | |
1294 | ||
1295 | if (ospf == NULL) | |
1296 | return 0; | |
1297 | ||
1298 | if (ospf->distance_intra) | |
1299 | if (or->path_type == OSPF_PATH_INTRA_AREA) | |
1300 | return ospf->distance_intra; | |
1301 | ||
1302 | if (ospf->distance_inter) | |
1303 | if (or->path_type == OSPF_PATH_INTER_AREA) | |
1304 | return ospf->distance_inter; | |
1305 | ||
1306 | if (ospf->distance_external) | |
1307 | if (or->path_type == OSPF_PATH_TYPE1_EXTERNAL || | |
1308 | or->path_type == OSPF_PATH_TYPE2_EXTERNAL) | |
1309 | return ospf->distance_external; | |
1310 | ||
1311 | if (ospf->distance_all) | |
1312 | return ospf->distance_all; | |
1313 | ||
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | void ospf_zebra_vrf_register(struct ospf *ospf) | |
1318 | { | |
1319 | if (!zclient || zclient->sock < 0 || !ospf) | |
1320 | return; | |
1321 | ||
1322 | if (ospf->vrf_id != VRF_UNKNOWN) { | |
1323 | if (IS_DEBUG_OSPF_EVENT) | |
1324 | zlog_debug("%s: Register VRF %s id %u", | |
1325 | __PRETTY_FUNCTION__, | |
1326 | ospf_vrf_id_to_name(ospf->vrf_id), | |
1327 | ospf->vrf_id); | |
1328 | zclient_send_reg_requests(zclient, ospf->vrf_id); | |
1329 | } | |
1330 | } | |
1331 | ||
1332 | void ospf_zebra_vrf_deregister(struct ospf *ospf) | |
1333 | { | |
1334 | if (!zclient || zclient->sock < 0 || !ospf) | |
1335 | return; | |
1336 | ||
1337 | if (ospf->vrf_id != VRF_DEFAULT && ospf->vrf_id != VRF_UNKNOWN) { | |
1338 | if (IS_DEBUG_OSPF_EVENT) | |
1339 | zlog_debug("%s: De-Register VRF %s id %u to Zebra.", | |
1340 | __PRETTY_FUNCTION__, | |
1341 | ospf_vrf_id_to_name(ospf->vrf_id), | |
1342 | ospf->vrf_id); | |
1343 | /* Deregister for router-id, interfaces, | |
1344 | * redistributed routes. */ | |
1345 | zclient_send_dereg_requests(zclient, ospf->vrf_id); | |
1346 | } | |
1347 | } | |
1348 | static void ospf_zebra_connected(struct zclient *zclient) | |
1349 | { | |
1350 | /* Send the client registration */ | |
1351 | bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER, VRF_DEFAULT); | |
1352 | ||
1353 | zclient_send_reg_requests(zclient, VRF_DEFAULT); | |
1354 | } | |
1355 | ||
1356 | void ospf_zebra_init(struct thread_master *master, unsigned short instance) | |
1357 | { | |
1358 | /* Allocate zebra structure. */ | |
1359 | zclient = zclient_new(master, &zclient_options_default); | |
1360 | zclient_init(zclient, ZEBRA_ROUTE_OSPF, instance, &ospfd_privs); | |
1361 | zclient->zebra_connected = ospf_zebra_connected; | |
1362 | zclient->router_id_update = ospf_router_id_update_zebra; | |
1363 | zclient->interface_address_add = ospf_interface_address_add; | |
1364 | zclient->interface_address_delete = ospf_interface_address_delete; | |
1365 | zclient->interface_link_params = ospf_interface_link_params; | |
1366 | zclient->interface_vrf_update = ospf_interface_vrf_update; | |
1367 | ||
1368 | zclient->redistribute_route_add = ospf_zebra_read_route; | |
1369 | zclient->redistribute_route_del = ospf_zebra_read_route; | |
1370 | ||
1371 | access_list_add_hook(ospf_filter_update); | |
1372 | access_list_delete_hook(ospf_filter_update); | |
1373 | prefix_list_add_hook(ospf_prefix_list_update); | |
1374 | prefix_list_delete_hook(ospf_prefix_list_update); | |
1375 | } |