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049207c3 | 1 | /* |
2 | * Area Border Router function. | |
3 | * Copyright (C) 2004 Yasuhiro Ohara | |
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 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
049207c3 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "log.h" | |
25 | #include "prefix.h" | |
26 | #include "table.h" | |
27 | #include "vty.h" | |
28 | #include "linklist.h" | |
29 | #include "command.h" | |
3b68735f | 30 | #include "thread.h" |
34956b31 | 31 | #include "plist.h" |
32 | #include "filter.h" | |
049207c3 | 33 | |
34 | #include "ospf6_proto.h" | |
35 | #include "ospf6_route.h" | |
36 | #include "ospf6_lsa.h" | |
37 | #include "ospf6_route.h" | |
38 | #include "ospf6_lsdb.h" | |
6452df09 | 39 | #include "ospf6_message.h" |
c3c0ac83 | 40 | #include "ospf6_zebra.h" |
6452df09 | 41 | |
049207c3 | 42 | #include "ospf6_top.h" |
43 | #include "ospf6_area.h" | |
44 | #include "ospf6_interface.h" | |
6452df09 | 45 | #include "ospf6_neighbor.h" |
46 | ||
6452df09 | 47 | #include "ospf6_flood.h" |
3b68735f | 48 | #include "ospf6_intra.h" |
49 | #include "ospf6_abr.h" | |
049207c3 | 50 | #include "ospf6d.h" |
51 | ||
52 | unsigned char conf_debug_ospf6_abr; | |
53 | ||
d62a17ae | 54 | int ospf6_is_router_abr(struct ospf6 *o) |
6452df09 | 55 | { |
d62a17ae | 56 | struct listnode *node; |
57 | struct ospf6_area *oa; | |
58 | int area_count = 0; | |
6452df09 | 59 | |
d62a17ae | 60 | for (ALL_LIST_ELEMENTS_RO(o->area_list, node, oa)) |
61 | if (IS_AREA_ENABLED(oa)) | |
62 | area_count++; | |
6452df09 | 63 | |
d62a17ae | 64 | if (area_count > 1) |
65 | return 1; | |
66 | return 0; | |
6452df09 | 67 | } |
68 | ||
d62a17ae | 69 | static int ospf6_abr_nexthops_belong_to_area(struct ospf6_route *route, |
70 | struct ospf6_area *area) | |
c3c0ac83 | 71 | { |
d62a17ae | 72 | struct ospf6_interface *oi; |
73 | ||
74 | oi = ospf6_interface_lookup_by_ifindex( | |
c5d28568 | 75 | ospf6_route_get_first_nh_index(route), area->ospf6->vrf_id); |
d62a17ae | 76 | if (oi && oi->area && oi->area == area) |
77 | return 1; | |
78 | else | |
79 | return 0; | |
c3c0ac83 DS |
80 | } |
81 | ||
d62a17ae | 82 | static void ospf6_abr_delete_route(struct ospf6_route *range, |
83 | struct ospf6_route *summary, | |
84 | struct ospf6_route_table *summary_table, | |
e285b70d | 85 | struct ospf6_lsa *old) |
c3c0ac83 | 86 | { |
d62a17ae | 87 | if (summary) { |
e285b70d | 88 | ospf6_route_remove(summary, summary_table); |
d62a17ae | 89 | } |
c3c0ac83 | 90 | |
d62a17ae | 91 | if (old && !OSPF6_LSA_IS_MAXAGE(old)) |
92 | ospf6_lsa_purge(old); | |
c3c0ac83 DS |
93 | } |
94 | ||
d62a17ae | 95 | void ospf6_abr_enable_area(struct ospf6_area *area) |
3b68735f | 96 | { |
d62a17ae | 97 | struct ospf6_area *oa; |
98 | struct listnode *node, *nnode; | |
3b68735f | 99 | |
d62a17ae | 100 | for (ALL_LIST_ELEMENTS(area->ospf6->area_list, node, nnode, oa)) |
101 | /* update B bit for each area */ | |
102 | OSPF6_ROUTER_LSA_SCHEDULE(oa); | |
3b68735f | 103 | } |
104 | ||
d62a17ae | 105 | void ospf6_abr_disable_area(struct ospf6_area *area) |
3b68735f | 106 | { |
d62a17ae | 107 | struct ospf6_area *oa; |
108 | struct ospf6_route *ro, *nro; | |
109 | struct ospf6_lsa *old; | |
110 | struct listnode *node, *nnode; | |
111 | ||
112 | /* Withdraw all summary prefixes previously originated */ | |
113 | for (ro = ospf6_route_head(area->summary_prefix); ro; ro = nro) { | |
114 | nro = ospf6_route_next(ro); | |
115 | old = ospf6_lsdb_lookup(ro->path.origin.type, | |
116 | ro->path.origin.id, | |
117 | area->ospf6->router_id, area->lsdb); | |
118 | if (old) | |
119 | ospf6_lsa_purge(old); | |
e285b70d | 120 | ospf6_route_remove(ro, area->summary_prefix); |
d62a17ae | 121 | } |
122 | ||
123 | /* Withdraw all summary router-routes previously originated */ | |
124 | for (ro = ospf6_route_head(area->summary_router); ro; ro = nro) { | |
125 | nro = ospf6_route_next(ro); | |
126 | old = ospf6_lsdb_lookup(ro->path.origin.type, | |
127 | ro->path.origin.id, | |
128 | area->ospf6->router_id, area->lsdb); | |
129 | if (old) | |
130 | ospf6_lsa_purge(old); | |
e285b70d | 131 | ospf6_route_remove(ro, area->summary_router); |
d62a17ae | 132 | } |
133 | ||
134 | /* Schedule Router-LSA for each area (ABR status may change) */ | |
135 | for (ALL_LIST_ELEMENTS(area->ospf6->area_list, node, nnode, oa)) | |
136 | /* update B bit for each area */ | |
137 | OSPF6_ROUTER_LSA_SCHEDULE(oa); | |
3b68735f | 138 | } |
139 | ||
049207c3 | 140 | /* RFC 2328 12.4.3. Summary-LSAs */ |
ca1f4309 DS |
141 | /* Returns 1 if a summary LSA has been generated for the area */ |
142 | /* This is used by the area/range logic to add/remove blackhole routes */ | |
d62a17ae | 143 | int ospf6_abr_originate_summary_to_area(struct ospf6_route *route, |
144 | struct ospf6_area *area) | |
049207c3 | 145 | { |
d62a17ae | 146 | struct ospf6_lsa *lsa, *old = NULL; |
147 | struct ospf6_route *summary, *range = NULL; | |
148 | struct ospf6_area *route_area; | |
149 | char buffer[OSPF6_MAX_LSASIZE]; | |
150 | struct ospf6_lsa_header *lsa_header; | |
151 | caddr_t p; | |
152 | struct ospf6_inter_prefix_lsa *prefix_lsa; | |
153 | struct ospf6_inter_router_lsa *router_lsa; | |
154 | struct ospf6_route_table *summary_table = NULL; | |
d7c0a89a | 155 | uint16_t type; |
d62a17ae | 156 | int is_debug = 0; |
157 | ||
158 | /* Only destination type network, range or ASBR are considered */ | |
159 | if (route->type != OSPF6_DEST_TYPE_NETWORK | |
160 | && route->type != OSPF6_DEST_TYPE_RANGE | |
161 | && ((route->type != OSPF6_DEST_TYPE_ROUTER) | |
162 | || !CHECK_FLAG(route->path.router_bits, OSPF6_ROUTER_BIT_E))) { | |
d62a17ae | 163 | return 0; |
c3c0ac83 | 164 | } |
d62a17ae | 165 | |
166 | /* AS External routes are never considered */ | |
167 | if (route->path.type == OSPF6_PATH_TYPE_EXTERNAL1 | |
168 | || route->path.type == OSPF6_PATH_TYPE_EXTERNAL2) { | |
d62a17ae | 169 | return 0; |
c3c0ac83 | 170 | } |
d62a17ae | 171 | |
172 | /* do not generate if the path's area is the same as target area */ | |
173 | if (route->path.area_id == area->area_id) { | |
d62a17ae | 174 | return 0; |
175 | } | |
176 | ||
177 | /* do not generate if the nexthops belongs to the target area */ | |
178 | if (ospf6_abr_nexthops_belong_to_area(route, area)) { | |
d62a17ae | 179 | return 0; |
180 | } | |
181 | ||
182 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
183 | if (ADV_ROUTER_IN_PREFIX(&route->prefix) | |
184 | == area->ospf6->router_id) { | |
d62a17ae | 185 | zlog_debug( |
72327cf3 | 186 | "%s: Skipping ASBR announcement for ABR (%pI4)", |
2dbe669b DA |
187 | __func__, |
188 | &ADV_ROUTER_IN_PREFIX(&route->prefix)); | |
d62a17ae | 189 | return 0; |
190 | } | |
191 | } | |
192 | ||
193 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
194 | if (IS_OSPF6_DEBUG_ABR | |
195 | || IS_OSPF6_DEBUG_ORIGINATE(INTER_ROUTER)) { | |
196 | is_debug++; | |
2dbe669b | 197 | zlog_debug( |
72327cf3 | 198 | "Originating summary in area %s for ASBR %pI4", |
2dbe669b DA |
199 | area->name, |
200 | &ADV_ROUTER_IN_PREFIX(&route->prefix)); | |
d62a17ae | 201 | } |
202 | summary_table = area->summary_router; | |
203 | } else { | |
204 | if (IS_OSPF6_DEBUG_ABR | |
6f19bb0e | 205 | || IS_OSPF6_DEBUG_ORIGINATE(INTER_PREFIX)) |
d62a17ae | 206 | is_debug++; |
6f19bb0e CS |
207 | |
208 | if (route->type == OSPF6_DEST_TYPE_NETWORK && | |
209 | route->path.origin.type == | |
210 | htons(OSPF6_LSTYPE_INTER_PREFIX)) { | |
211 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) { | |
2dbe669b | 212 | if (is_debug) |
6f19bb0e | 213 | zlog_debug( |
2dbe669b | 214 | "%s: route %pFX with cost %u is not best, ignore.", |
72327cf3 | 215 | __func__, &route->prefix, |
6f19bb0e | 216 | route->path.cost); |
6f19bb0e CS |
217 | return 0; |
218 | } | |
219 | } | |
220 | ||
276aa265 CS |
221 | if (route->path.origin.type == |
222 | htons(OSPF6_LSTYPE_INTRA_PREFIX)) { | |
223 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) { | |
2dbe669b | 224 | if (is_debug) |
15569c58 | 225 | zlog_debug( |
2dbe669b DA |
226 | "%s: intra-prefix route %pFX with cost %u is not best, ignore.", |
227 | __func__, &route->prefix, | |
15569c58 | 228 | route->path.cost); |
276aa265 CS |
229 | return 0; |
230 | } | |
231 | } | |
232 | ||
2dbe669b DA |
233 | if (is_debug) |
234 | zlog_debug( | |
235 | "Originating summary in area %s for %pFX cost %u", | |
236 | area->name, &route->prefix, route->path.cost); | |
d62a17ae | 237 | summary_table = area->summary_prefix; |
238 | } | |
239 | ||
240 | summary = ospf6_route_lookup(&route->prefix, summary_table); | |
241 | if (summary) | |
242 | old = ospf6_lsdb_lookup(summary->path.origin.type, | |
243 | summary->path.origin.id, | |
244 | area->ospf6->router_id, area->lsdb); | |
245 | ||
246 | /* if this route has just removed, remove corresponding LSA */ | |
247 | if (CHECK_FLAG(route->flag, OSPF6_ROUTE_REMOVE)) { | |
248 | if (is_debug) | |
249 | zlog_debug( | |
250 | "The route has just removed, purge previous LSA"); | |
251 | ||
252 | if (route->type == OSPF6_DEST_TYPE_RANGE) { | |
253 | /* Whether the route have active longer prefix */ | |
254 | if (!CHECK_FLAG(route->flag, | |
255 | OSPF6_ROUTE_ACTIVE_SUMMARY)) { | |
256 | if (is_debug) | |
257 | zlog_debug( | |
258 | "The range is not active. withdraw"); | |
259 | ||
260 | ospf6_abr_delete_route(route, summary, | |
e285b70d | 261 | summary_table, old); |
d62a17ae | 262 | } |
276aa265 | 263 | } else if (old) { |
e285b70d | 264 | ospf6_route_remove(summary, summary_table); |
d62a17ae | 265 | ospf6_lsa_purge(old); |
276aa265 | 266 | } |
d62a17ae | 267 | return 0; |
268 | } | |
269 | ||
270 | if ((route->type == OSPF6_DEST_TYPE_ROUTER) && IS_AREA_STUB(area)) { | |
271 | if (is_debug) | |
272 | zlog_debug( | |
273 | "Area has been stubbed, purge Inter-Router LSA"); | |
274 | ||
e285b70d | 275 | ospf6_abr_delete_route(route, summary, summary_table, old); |
d62a17ae | 276 | return 0; |
277 | } | |
278 | ||
279 | if (area->no_summary | |
280 | && (route->path.subtype != OSPF6_PATH_SUBTYPE_DEFAULT_RT)) { | |
281 | if (is_debug) | |
282 | zlog_debug("Area has been stubbed, purge prefix LSA"); | |
283 | ||
e285b70d | 284 | ospf6_abr_delete_route(route, summary, summary_table, old); |
d62a17ae | 285 | return 0; |
286 | } | |
287 | ||
288 | /* do not generate if the route cost is greater or equal to LSInfinity | |
289 | */ | |
290 | if (route->path.cost >= OSPF_LS_INFINITY) { | |
291 | /* When we're clearing the range route because all active | |
292 | * prefixes | |
293 | * under the range are gone, we set the range's cost to | |
294 | * OSPF_AREA_RANGE_COST_UNSPEC, which is > OSPF_LS_INFINITY. We | |
295 | * don't want to trigger the code here for that. This code is | |
296 | * for | |
297 | * handling routes that have gone to infinity. The range removal | |
298 | * happens | |
299 | * elsewhere. | |
300 | */ | |
301 | if ((route->type != OSPF6_DEST_TYPE_RANGE) | |
302 | && (route->path.cost != OSPF_AREA_RANGE_COST_UNSPEC)) { | |
303 | if (is_debug) | |
304 | zlog_debug( | |
305 | "The cost exceeds LSInfinity, withdraw"); | |
306 | if (old) | |
307 | ospf6_lsa_purge(old); | |
308 | return 0; | |
309 | } | |
310 | } | |
311 | ||
312 | /* if this is a route to ASBR */ | |
313 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
0437e105 | 314 | /* Only the preferred best path is considered */ |
d62a17ae | 315 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) { |
316 | if (is_debug) | |
317 | zlog_debug( | |
318 | "This is the secondary path to the ASBR, ignore"); | |
319 | ospf6_abr_delete_route(route, summary, summary_table, | |
e285b70d | 320 | old); |
d62a17ae | 321 | return 0; |
322 | } | |
323 | ||
324 | /* Do not generate if the area is stub */ | |
325 | /* XXX */ | |
326 | } | |
327 | ||
328 | /* if this is an intra-area route, this may be suppressed by aggregation | |
329 | */ | |
330 | if (route->type == OSPF6_DEST_TYPE_NETWORK | |
331 | && route->path.type == OSPF6_PATH_TYPE_INTRA) { | |
332 | /* search for configured address range for the route's area */ | |
333 | route_area = | |
334 | ospf6_area_lookup(route->path.area_id, area->ospf6); | |
335 | assert(route_area); | |
336 | range = ospf6_route_lookup_bestmatch(&route->prefix, | |
337 | route_area->range_table); | |
338 | ||
339 | /* ranges are ignored when originate backbone routes to transit | |
340 | area. | |
341 | Otherwise, if ranges are configured, the route is suppressed. | |
342 | */ | |
343 | if (range && !CHECK_FLAG(range->flag, OSPF6_ROUTE_REMOVE) | |
344 | && (route->path.area_id != OSPF_AREA_BACKBONE | |
345 | || !IS_AREA_TRANSIT(area))) { | |
2dbe669b DA |
346 | if (is_debug) |
347 | zlog_debug( | |
348 | "Suppressed by range %pFX of area %s", | |
349 | &range->prefix, route_area->name); | |
d62a17ae | 350 | ospf6_abr_delete_route(route, summary, summary_table, |
e285b70d | 351 | old); |
d62a17ae | 352 | return 0; |
353 | } | |
354 | } | |
355 | ||
356 | /* If this is a configured address range */ | |
357 | if (route->type == OSPF6_DEST_TYPE_RANGE) { | |
358 | /* If DoNotAdvertise is set */ | |
359 | if (CHECK_FLAG(route->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE)) { | |
360 | if (is_debug) | |
361 | zlog_debug( | |
362 | "This is the range with DoNotAdvertise set. ignore"); | |
363 | ospf6_abr_delete_route(route, summary, summary_table, | |
e285b70d | 364 | old); |
d62a17ae | 365 | return 0; |
366 | } | |
367 | ||
368 | /* If there are no active prefixes in this range, remove */ | |
369 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_ACTIVE_SUMMARY)) { | |
370 | if (is_debug) | |
371 | zlog_debug("The range is not active. withdraw"); | |
372 | ospf6_abr_delete_route(route, summary, summary_table, | |
e285b70d | 373 | old); |
d62a17ae | 374 | return 0; |
375 | } | |
376 | } | |
377 | ||
378 | /* Check export list */ | |
379 | if (EXPORT_NAME(area)) { | |
380 | if (EXPORT_LIST(area) == NULL) | |
381 | EXPORT_LIST(area) = | |
382 | access_list_lookup(AFI_IP6, EXPORT_NAME(area)); | |
383 | ||
384 | if (EXPORT_LIST(area)) | |
385 | if (access_list_apply(EXPORT_LIST(area), &route->prefix) | |
386 | == FILTER_DENY) { | |
2dbe669b | 387 | if (is_debug) |
d62a17ae | 388 | zlog_debug( |
2dbe669b | 389 | "prefix %pFX was denied by export list", |
72327cf3 | 390 | &route->prefix); |
d62a17ae | 391 | return 0; |
392 | } | |
393 | } | |
394 | ||
395 | /* Check filter-list */ | |
427f8e61 DL |
396 | if (PREFIX_LIST_OUT(area)) |
397 | if (prefix_list_apply(PREFIX_LIST_OUT(area), &route->prefix) | |
398 | != PREFIX_PERMIT) { | |
2dbe669b | 399 | if (is_debug) |
427f8e61 | 400 | zlog_debug( |
2dbe669b | 401 | "prefix %pFX was denied by filter-list out", |
72327cf3 | 402 | &route->prefix); |
427f8e61 DL |
403 | return 0; |
404 | } | |
d62a17ae | 405 | |
406 | /* the route is going to be originated. store it in area's summary_table | |
407 | */ | |
408 | if (summary == NULL) { | |
409 | summary = ospf6_route_copy(route); | |
410 | summary->path.origin.adv_router = area->ospf6->router_id; | |
411 | ||
412 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
413 | summary->path.origin.type = | |
414 | htons(OSPF6_LSTYPE_INTER_ROUTER); | |
415 | summary->path.origin.id = | |
416 | ADV_ROUTER_IN_PREFIX(&route->prefix); | |
417 | } else { | |
418 | summary->path.origin.type = | |
419 | htons(OSPF6_LSTYPE_INTER_PREFIX); | |
420 | summary->path.origin.id = ospf6_new_ls_id( | |
421 | summary->path.origin.type, | |
422 | summary->path.origin.adv_router, area->lsdb); | |
423 | } | |
e285b70d | 424 | summary = ospf6_route_add(summary, summary_table); |
d62a17ae | 425 | } else { |
426 | summary->type = route->type; | |
427 | monotime(&summary->changed); | |
c3c0ac83 | 428 | } |
d62a17ae | 429 | |
430 | summary->path.router_bits = route->path.router_bits; | |
431 | summary->path.options[0] = route->path.options[0]; | |
432 | summary->path.options[1] = route->path.options[1]; | |
433 | summary->path.options[2] = route->path.options[2]; | |
434 | summary->path.prefix_options = route->path.prefix_options; | |
435 | summary->path.area_id = area->area_id; | |
436 | summary->path.type = OSPF6_PATH_TYPE_INTER; | |
437 | summary->path.subtype = route->path.subtype; | |
438 | summary->path.cost = route->path.cost; | |
439 | /* summary->nexthop[0] = route->nexthop[0]; */ | |
440 | ||
441 | /* prepare buffer */ | |
442 | memset(buffer, 0, sizeof(buffer)); | |
443 | lsa_header = (struct ospf6_lsa_header *)buffer; | |
444 | ||
445 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
446 | router_lsa = (struct ospf6_inter_router_lsa | |
447 | *)((caddr_t)lsa_header | |
448 | + sizeof(struct ospf6_lsa_header)); | |
449 | p = (caddr_t)router_lsa + sizeof(struct ospf6_inter_router_lsa); | |
450 | ||
451 | /* Fill Inter-Area-Router-LSA */ | |
452 | router_lsa->options[0] = route->path.options[0]; | |
453 | router_lsa->options[1] = route->path.options[1]; | |
454 | router_lsa->options[2] = route->path.options[2]; | |
455 | OSPF6_ABR_SUMMARY_METRIC_SET(router_lsa, route->path.cost); | |
456 | router_lsa->router_id = ADV_ROUTER_IN_PREFIX(&route->prefix); | |
457 | type = htons(OSPF6_LSTYPE_INTER_ROUTER); | |
458 | } else { | |
459 | prefix_lsa = (struct ospf6_inter_prefix_lsa | |
460 | *)((caddr_t)lsa_header | |
461 | + sizeof(struct ospf6_lsa_header)); | |
462 | p = (caddr_t)prefix_lsa + sizeof(struct ospf6_inter_prefix_lsa); | |
463 | ||
464 | /* Fill Inter-Area-Prefix-LSA */ | |
465 | OSPF6_ABR_SUMMARY_METRIC_SET(prefix_lsa, route->path.cost); | |
466 | prefix_lsa->prefix.prefix_length = route->prefix.prefixlen; | |
467 | prefix_lsa->prefix.prefix_options = route->path.prefix_options; | |
468 | ||
469 | /* set Prefix */ | |
470 | memcpy(p, &route->prefix.u.prefix6, | |
471 | OSPF6_PREFIX_SPACE(route->prefix.prefixlen)); | |
472 | ospf6_prefix_apply_mask(&prefix_lsa->prefix); | |
473 | p += OSPF6_PREFIX_SPACE(route->prefix.prefixlen); | |
474 | type = htons(OSPF6_LSTYPE_INTER_PREFIX); | |
c3c0ac83 | 475 | } |
d62a17ae | 476 | |
477 | /* Fill LSA Header */ | |
478 | lsa_header->age = 0; | |
479 | lsa_header->type = type; | |
480 | lsa_header->id = summary->path.origin.id; | |
481 | lsa_header->adv_router = area->ospf6->router_id; | |
482 | lsa_header->seqnum = | |
483 | ospf6_new_ls_seqnum(lsa_header->type, lsa_header->id, | |
484 | lsa_header->adv_router, area->lsdb); | |
485 | lsa_header->length = htons((caddr_t)p - (caddr_t)lsa_header); | |
486 | ||
487 | /* LSA checksum */ | |
488 | ospf6_lsa_checksum(lsa_header); | |
489 | ||
490 | /* create LSA */ | |
491 | lsa = ospf6_lsa_create(lsa_header); | |
492 | ||
493 | /* Originate */ | |
494 | ospf6_lsa_originate_area(lsa, area); | |
495 | ||
496 | return 1; | |
6452df09 | 497 | } |
498 | ||
d62a17ae | 499 | void ospf6_abr_range_reset_cost(struct ospf6 *ospf6) |
ca1f4309 | 500 | { |
d62a17ae | 501 | struct listnode *node, *nnode; |
502 | struct ospf6_area *oa; | |
503 | struct ospf6_route *range; | |
504 | ||
505 | for (ALL_LIST_ELEMENTS(ospf6->area_list, node, nnode, oa)) | |
506 | for (range = ospf6_route_head(oa->range_table); range; | |
507 | range = ospf6_route_next(range)) | |
508 | OSPF6_ABR_RANGE_CLEAR_COST(range); | |
ca1f4309 DS |
509 | } |
510 | ||
d7c0a89a QY |
511 | static inline uint32_t ospf6_abr_range_compute_cost(struct ospf6_route *range, |
512 | struct ospf6 *o) | |
6452df09 | 513 | { |
d62a17ae | 514 | struct ospf6_route *ro; |
d7c0a89a | 515 | uint32_t cost = 0; |
d62a17ae | 516 | |
517 | for (ro = ospf6_route_match_head(&range->prefix, o->route_table); ro; | |
518 | ro = ospf6_route_match_next(&range->prefix, ro)) { | |
519 | if (ro->path.area_id == range->path.area_id | |
520 | && (ro->path.type == OSPF6_PATH_TYPE_INTRA) | |
521 | && !CHECK_FLAG(ro->flag, OSPF6_ROUTE_REMOVE)) | |
522 | cost = MAX(cost, ro->path.cost); | |
523 | } | |
524 | ||
525 | return cost; | |
ca1f4309 DS |
526 | } |
527 | ||
528 | static inline int | |
d7c0a89a | 529 | ospf6_abr_range_summary_needs_update(struct ospf6_route *range, uint32_t cost) |
ca1f4309 | 530 | { |
d62a17ae | 531 | int redo_summary = 0; |
532 | ||
533 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_REMOVE)) { | |
534 | UNSET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
535 | redo_summary = 1; | |
536 | } else if (CHECK_FLAG(range->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE)) { | |
537 | if (range->path.cost != 0) { | |
538 | range->path.cost = 0; | |
539 | redo_summary = 1; | |
540 | } | |
541 | } else if (cost) { | |
542 | if ((OSPF6_PATH_COST_IS_CONFIGURED(range->path) | |
543 | && range->path.cost != range->path.u.cost_config)) { | |
544 | range->path.cost = range->path.u.cost_config; | |
545 | SET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
546 | redo_summary = 1; | |
547 | } else if (!OSPF6_PATH_COST_IS_CONFIGURED(range->path) | |
548 | && range->path.cost != cost) { | |
549 | range->path.cost = cost; | |
550 | SET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
551 | redo_summary = 1; | |
552 | } | |
553 | } else if (CHECK_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY)) { | |
554 | /* Cost is zero, meaning no active range */ | |
555 | UNSET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
556 | range->path.cost = OSPF_AREA_RANGE_COST_UNSPEC; | |
557 | redo_summary = 1; | |
c3c0ac83 | 558 | } |
d62a17ae | 559 | |
560 | return (redo_summary); | |
ca1f4309 DS |
561 | } |
562 | ||
beadc736 | 563 | static void ospf6_abr_range_update(struct ospf6_route *range, |
564 | struct ospf6 *ospf6) | |
ca1f4309 | 565 | { |
d7c0a89a | 566 | uint32_t cost = 0; |
d62a17ae | 567 | struct listnode *node, *nnode; |
568 | struct ospf6_area *oa; | |
569 | int summary_orig = 0; | |
570 | ||
571 | assert(range->type == OSPF6_DEST_TYPE_RANGE); | |
572 | ||
573 | /* update range's cost and active flag */ | |
574 | cost = ospf6_abr_range_compute_cost(range, ospf6); | |
575 | ||
576 | /* Non-zero cost is a proxy for active longer prefixes in this range. | |
577 | * If there are active routes covered by this range AND either the | |
578 | * configured | |
579 | * cost has changed or the summarized cost has changed then redo | |
580 | * summaries. | |
581 | * Alternately, if there are no longer active prefixes and there are | |
582 | * summary announcements, withdraw those announcements. | |
583 | * | |
584 | * The don't advertise code relies on the path.cost being set to UNSPEC | |
585 | * to | |
586 | * work the first time. Subsequent times the path.cost is not 0 anyway | |
587 | * if there | |
588 | * were active ranges. | |
589 | */ | |
590 | ||
591 | if (ospf6_abr_range_summary_needs_update(range, cost)) { | |
592 | for (ALL_LIST_ELEMENTS(ospf6->area_list, node, nnode, oa)) | |
593 | summary_orig += | |
594 | ospf6_abr_originate_summary_to_area(range, oa); | |
595 | ||
596 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY) | |
597 | && summary_orig) { | |
598 | if (!CHECK_FLAG(range->flag, | |
599 | OSPF6_ROUTE_BLACKHOLE_ADDED)) { | |
600 | if (IS_OSPF6_DEBUG_ABR) | |
601 | zlog_debug("Add discard route"); | |
602 | ||
beadc736 | 603 | ospf6_zebra_add_discard(range, ospf6); |
d62a17ae | 604 | } |
605 | } else { | |
606 | /* Summary removed or no summary generated as no | |
607 | * specifics exist */ | |
608 | if (CHECK_FLAG(range->flag, | |
609 | OSPF6_ROUTE_BLACKHOLE_ADDED)) { | |
610 | if (IS_OSPF6_DEBUG_ABR) | |
611 | zlog_debug("Delete discard route"); | |
612 | ||
beadc736 | 613 | ospf6_zebra_delete_discard(range, ospf6); |
d62a17ae | 614 | } |
615 | } | |
c3c0ac83 | 616 | } |
049207c3 | 617 | } |
618 | ||
beadc736 | 619 | void ospf6_abr_originate_summary(struct ospf6_route *route, struct ospf6 *ospf6) |
049207c3 | 620 | { |
d62a17ae | 621 | struct listnode *node, *nnode; |
622 | struct ospf6_area *oa; | |
623 | struct ospf6_route *range = NULL; | |
624 | ||
beadc736 | 625 | |
d62a17ae | 626 | if (route->type == OSPF6_DEST_TYPE_NETWORK) { |
627 | oa = ospf6_area_lookup(route->path.area_id, ospf6); | |
48725111 | 628 | if (!oa) { |
629 | zlog_err("OSPFv6 area lookup failed"); | |
630 | return; | |
631 | } | |
632 | ||
d62a17ae | 633 | range = ospf6_route_lookup_bestmatch(&route->prefix, |
634 | oa->range_table); | |
635 | if (range) { | |
beadc736 | 636 | ospf6_abr_range_update(range, ospf6); |
d62a17ae | 637 | } |
c3c0ac83 | 638 | } |
6452df09 | 639 | |
d62a17ae | 640 | for (ALL_LIST_ELEMENTS(ospf6->area_list, node, nnode, oa)) |
641 | ospf6_abr_originate_summary_to_area(route, oa); | |
049207c3 | 642 | } |
643 | ||
d62a17ae | 644 | void ospf6_abr_defaults_to_stub(struct ospf6 *o) |
ca1f4309 | 645 | { |
d62a17ae | 646 | struct listnode *node, *nnode; |
647 | struct ospf6_area *oa; | |
648 | struct ospf6_route *def, *route; | |
649 | ||
650 | if (!o->backbone) | |
651 | return; | |
652 | ||
653 | def = ospf6_route_create(); | |
654 | def->type = OSPF6_DEST_TYPE_NETWORK; | |
655 | def->prefix.family = AF_INET6; | |
656 | def->prefix.prefixlen = 0; | |
657 | memset(&def->prefix.u.prefix6, 0, sizeof(struct in6_addr)); | |
658 | def->type = OSPF6_DEST_TYPE_NETWORK; | |
659 | def->path.type = OSPF6_PATH_TYPE_INTER; | |
660 | def->path.subtype = OSPF6_PATH_SUBTYPE_DEFAULT_RT; | |
661 | def->path.area_id = o->backbone->area_id; | |
662 | ||
beadc736 | 663 | for (ALL_LIST_ELEMENTS(o->area_list, node, nnode, oa)) { |
d62a17ae | 664 | if (!IS_AREA_STUB(oa)) { |
665 | /* withdraw defaults when an area switches from stub to | |
666 | * non-stub */ | |
667 | route = ospf6_route_lookup(&def->prefix, | |
668 | oa->summary_prefix); | |
669 | if (route | |
670 | && (route->path.subtype == def->path.subtype)) { | |
671 | if (IS_OSPF6_DEBUG_ABR) | |
672 | zlog_debug( | |
673 | "Withdrawing default route from non-stubby area %s", | |
674 | oa->name); | |
675 | SET_FLAG(def->flag, OSPF6_ROUTE_REMOVE); | |
676 | ospf6_abr_originate_summary_to_area(def, oa); | |
677 | } | |
678 | } else { | |
679 | /* announce defaults to stubby areas */ | |
680 | if (IS_OSPF6_DEBUG_ABR) | |
681 | zlog_debug( | |
682 | "Announcing default route into stubby area %s", | |
683 | oa->name); | |
684 | UNSET_FLAG(def->flag, OSPF6_ROUTE_REMOVE); | |
685 | ospf6_abr_originate_summary_to_area(def, oa); | |
686 | } | |
ca1f4309 | 687 | } |
d62a17ae | 688 | ospf6_route_delete(def); |
ca1f4309 DS |
689 | } |
690 | ||
6f19bb0e CS |
691 | void ospf6_abr_old_path_update(struct ospf6_route *old_route, |
692 | struct ospf6_route *route, | |
e285b70d | 693 | struct ospf6_route_table *table) |
6f19bb0e CS |
694 | { |
695 | struct ospf6_path *o_path = NULL; | |
696 | struct listnode *anode, *anext; | |
697 | struct listnode *nnode, *rnode, *rnext; | |
698 | struct ospf6_nexthop *nh, *rnh; | |
699 | ||
700 | for (ALL_LIST_ELEMENTS(old_route->paths, anode, anext, o_path)) { | |
701 | if (o_path->area_id != route->path.area_id || | |
702 | (memcmp(&(o_path)->origin, &(route)->path.origin, | |
703 | sizeof(struct ospf6_ls_origin)) != 0)) | |
704 | continue; | |
705 | ||
706 | if ((o_path->cost == route->path.cost) && | |
707 | (o_path->u.cost_e2 == route->path.u.cost_e2)) | |
708 | continue; | |
709 | ||
710 | for (ALL_LIST_ELEMENTS_RO(o_path->nh_list, nnode, nh)) { | |
711 | for (ALL_LIST_ELEMENTS(old_route->nh_list, rnode, | |
712 | rnext, rnh)) { | |
713 | if (!ospf6_nexthop_is_same(rnh, nh)) | |
714 | continue; | |
715 | listnode_delete(old_route->nh_list, rnh); | |
716 | ospf6_nexthop_delete(rnh); | |
717 | } | |
718 | ||
719 | } | |
720 | ||
721 | listnode_delete(old_route->paths, o_path); | |
722 | ospf6_path_free(o_path); | |
723 | ||
724 | for (ALL_LIST_ELEMENTS(old_route->paths, anode, | |
725 | anext, o_path)) { | |
726 | ospf6_merge_nexthops(old_route->nh_list, | |
727 | o_path->nh_list); | |
728 | } | |
729 | ||
730 | if (IS_OSPF6_DEBUG_ABR || IS_OSPF6_DEBUG_EXAMIN(INTER_PREFIX)) | |
5e81f5dd DS |
731 | zlog_debug("%s: paths %u nh %u", __func__, |
732 | old_route->paths | |
733 | ? listcount(old_route->paths) | |
734 | : 0, | |
735 | old_route->nh_list | |
736 | ? listcount(old_route->nh_list) | |
737 | : 0); | |
6f19bb0e CS |
738 | |
739 | if (table->hook_add) | |
e285b70d | 740 | (*table->hook_add)(old_route); |
6f19bb0e CS |
741 | |
742 | if (old_route->path.origin.id == route->path.origin.id && | |
743 | old_route->path.origin.adv_router == | |
744 | route->path.origin.adv_router) { | |
745 | struct ospf6_path *h_path; | |
746 | ||
747 | h_path = (struct ospf6_path *) | |
748 | listgetdata(listhead(old_route->paths)); | |
749 | old_route->path.origin.type = h_path->origin.type; | |
750 | old_route->path.origin.id = h_path->origin.id; | |
751 | old_route->path.origin.adv_router = | |
752 | h_path->origin.adv_router; | |
753 | } | |
754 | } | |
755 | } | |
756 | ||
beadc736 | 757 | void ospf6_abr_old_route_remove(struct ospf6_lsa *lsa, struct ospf6_route *old, |
e285b70d | 758 | struct ospf6_route_table *table) |
6f19bb0e CS |
759 | { |
760 | if (listcount(old->paths) > 1) { | |
761 | struct listnode *anode, *anext, *nnode, *rnode, *rnext; | |
762 | struct ospf6_path *o_path; | |
763 | struct ospf6_nexthop *nh, *rnh; | |
764 | bool nh_updated = false; | |
6f19bb0e CS |
765 | |
766 | for (ALL_LIST_ELEMENTS(old->paths, anode, anext, o_path)) { | |
767 | if (o_path->origin.adv_router != lsa->header->adv_router | |
768 | && o_path->origin.id != lsa->header->id) | |
769 | continue; | |
770 | for (ALL_LIST_ELEMENTS_RO(o_path->nh_list, nnode, nh)) { | |
771 | for (ALL_LIST_ELEMENTS(old->nh_list, | |
772 | rnode, rnext, rnh)) { | |
773 | if (!ospf6_nexthop_is_same(rnh, nh)) | |
774 | continue; | |
775 | listnode_delete(old->nh_list, rnh); | |
776 | ospf6_nexthop_delete(rnh); | |
777 | } | |
778 | } | |
779 | listnode_delete(old->paths, o_path); | |
780 | ospf6_path_free(o_path); | |
781 | nh_updated = true; | |
782 | } | |
783 | ||
784 | if (nh_updated) { | |
785 | if (listcount(old->paths)) { | |
2dbe669b DA |
786 | if (IS_OSPF6_DEBUG_ABR |
787 | || IS_OSPF6_DEBUG_EXAMIN(INTER_PREFIX)) | |
788 | zlog_debug("%s: old %pFX updated nh %u", | |
789 | __func__, &old->prefix, | |
5e81f5dd DS |
790 | old->nh_list ? listcount( |
791 | old->nh_list) | |
792 | : 0); | |
6f19bb0e CS |
793 | |
794 | if (table->hook_add) | |
e285b70d | 795 | (*table->hook_add)(old); |
6f19bb0e CS |
796 | |
797 | if ((old->path.origin.id == lsa->header->id) && | |
798 | (old->path.origin.adv_router | |
799 | == lsa->header->adv_router)) { | |
800 | struct ospf6_path *h_path; | |
801 | ||
802 | h_path = (struct ospf6_path *) | |
803 | listgetdata( | |
804 | listhead(old->paths)); | |
805 | old->path.origin.type = | |
806 | h_path->origin.type; | |
807 | old->path.origin.id = h_path->origin.id; | |
808 | old->path.origin.adv_router = | |
809 | h_path->origin.adv_router; | |
810 | } | |
811 | } else | |
e285b70d | 812 | ospf6_route_remove(old, table); |
6f19bb0e CS |
813 | } |
814 | } else | |
e285b70d | 815 | ospf6_route_remove(old, table); |
6f19bb0e CS |
816 | } |
817 | ||
049207c3 | 818 | /* RFC 2328 16.2. Calculating the inter-area routes */ |
d62a17ae | 819 | void ospf6_abr_examin_summary(struct ospf6_lsa *lsa, struct ospf6_area *oa) |
049207c3 | 820 | { |
d62a17ae | 821 | struct prefix prefix, abr_prefix; |
822 | struct ospf6_route_table *table = NULL; | |
99ab28cb | 823 | struct ospf6_route *range, *route, *old = NULL, *old_route; |
d62a17ae | 824 | struct ospf6_route *abr_entry; |
d7c0a89a | 825 | uint8_t type = 0; |
d62a17ae | 826 | char options[3] = {0, 0, 0}; |
d7c0a89a QY |
827 | uint8_t prefix_options = 0; |
828 | uint32_t cost = 0; | |
829 | uint8_t router_bits = 0; | |
d62a17ae | 830 | char buf[PREFIX2STR_BUFFER]; |
831 | int is_debug = 0; | |
832 | struct ospf6_inter_prefix_lsa *prefix_lsa = NULL; | |
833 | struct ospf6_inter_router_lsa *router_lsa = NULL; | |
99ab28cb | 834 | bool old_entry_updated = false; |
6f19bb0e CS |
835 | struct ospf6_path *path, *o_path, *ecmp_path; |
836 | struct listnode *anode; | |
d62a17ae | 837 | |
838 | memset(&prefix, 0, sizeof(prefix)); | |
839 | ||
840 | if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_PREFIX)) { | |
841 | if (IS_OSPF6_DEBUG_EXAMIN(INTER_PREFIX)) { | |
842 | is_debug++; | |
5e81f5dd DS |
843 | zlog_debug("%s: Examin %s in area %s", __func__, |
844 | lsa->name, oa->name); | |
d62a17ae | 845 | } |
846 | ||
847 | prefix_lsa = | |
848 | (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( | |
849 | lsa->header); | |
850 | prefix.family = AF_INET6; | |
851 | prefix.prefixlen = prefix_lsa->prefix.prefix_length; | |
b8ce0c36 | 852 | ospf6_prefix_in6_addr(&prefix.u.prefix6, prefix_lsa, |
853 | &prefix_lsa->prefix); | |
d62a17ae | 854 | if (is_debug) |
855 | prefix2str(&prefix, buf, sizeof(buf)); | |
856 | table = oa->ospf6->route_table; | |
857 | type = OSPF6_DEST_TYPE_NETWORK; | |
858 | prefix_options = prefix_lsa->prefix.prefix_options; | |
859 | cost = OSPF6_ABR_SUMMARY_METRIC(prefix_lsa); | |
860 | } else if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_ROUTER)) { | |
861 | if (IS_OSPF6_DEBUG_EXAMIN(INTER_ROUTER)) { | |
862 | is_debug++; | |
5e81f5dd DS |
863 | zlog_debug("%s: Examin %s in area %s", __func__, |
864 | lsa->name, oa->name); | |
d62a17ae | 865 | } |
866 | ||
867 | router_lsa = | |
868 | (struct ospf6_inter_router_lsa *)OSPF6_LSA_HEADER_END( | |
869 | lsa->header); | |
870 | ospf6_linkstate_prefix(router_lsa->router_id, htonl(0), | |
871 | &prefix); | |
872 | if (is_debug) | |
873 | inet_ntop(AF_INET, &router_lsa->router_id, buf, | |
874 | sizeof(buf)); | |
875 | ||
876 | table = oa->ospf6->brouter_table; | |
877 | type = OSPF6_DEST_TYPE_ROUTER; | |
878 | options[0] = router_lsa->options[0]; | |
879 | options[1] = router_lsa->options[1]; | |
880 | options[2] = router_lsa->options[2]; | |
881 | cost = OSPF6_ABR_SUMMARY_METRIC(router_lsa); | |
882 | SET_FLAG(router_bits, OSPF6_ROUTER_BIT_E); | |
883 | } else | |
884 | assert(0); | |
885 | ||
886 | /* Find existing route */ | |
887 | route = ospf6_route_lookup(&prefix, table); | |
888 | if (route) | |
889 | ospf6_route_lock(route); | |
890 | while (route && ospf6_route_is_prefix(&prefix, route)) { | |
891 | if (route->path.area_id == oa->area_id | |
892 | && route->path.origin.type == lsa->header->type | |
6f19bb0e CS |
893 | && !CHECK_FLAG(route->flag, OSPF6_ROUTE_WAS_REMOVED)) { |
894 | /* LSA adv. router could be part of route's | |
895 | * paths list. Find the existing path and set | |
896 | * old as the route. | |
897 | */ | |
898 | if (listcount(route->paths) > 1) { | |
6f19bb0e CS |
899 | for (ALL_LIST_ELEMENTS_RO(route->paths, anode, |
900 | o_path)) { | |
6f19bb0e CS |
901 | if (o_path->origin.id == lsa->header->id |
902 | && o_path->origin.adv_router == | |
903 | lsa->header->adv_router) { | |
904 | old = route; | |
905 | ||
906 | if (is_debug) | |
5e81f5dd | 907 | zlog_debug( |
dc138868 | 908 | "%s: old entry found in paths, adv_router %pI4", |
5e81f5dd | 909 | __func__, |
dc138868 | 910 | &o_path->origin.adv_router); |
6f19bb0e CS |
911 | |
912 | break; | |
913 | } | |
914 | } | |
915 | } else if (route->path.origin.id == lsa->header->id && | |
916 | route->path.origin.adv_router == | |
917 | lsa->header->adv_router) | |
918 | old = route; | |
919 | } | |
d62a17ae | 920 | route = ospf6_route_next(route); |
921 | } | |
922 | if (route) | |
923 | ospf6_route_unlock(route); | |
924 | ||
925 | /* (1) if cost == LSInfinity or if the LSA is MaxAge */ | |
926 | if (cost == OSPF_LS_INFINITY) { | |
927 | if (is_debug) | |
928 | zlog_debug("cost is LS_INFINITY, ignore"); | |
929 | if (old) | |
e285b70d | 930 | ospf6_abr_old_route_remove(lsa, old, table); |
d62a17ae | 931 | return; |
932 | } | |
933 | if (OSPF6_LSA_IS_MAXAGE(lsa)) { | |
934 | if (is_debug) | |
5e81f5dd DS |
935 | zlog_debug("%s: LSA %s is MaxAge, ignore", __func__, |
936 | lsa->name); | |
d62a17ae | 937 | if (old) |
e285b70d | 938 | ospf6_abr_old_route_remove(lsa, old, table); |
d62a17ae | 939 | return; |
940 | } | |
941 | ||
942 | /* (2) if the LSA is self-originated, ignore */ | |
943 | if (lsa->header->adv_router == oa->ospf6->router_id) { | |
944 | if (is_debug) | |
6f19bb0e CS |
945 | zlog_debug("LSA %s is self-originated, ignore", |
946 | lsa->name); | |
d62a17ae | 947 | if (old) |
e285b70d | 948 | ospf6_route_remove(old, table); |
d62a17ae | 949 | return; |
01879114 | 950 | } |
d62a17ae | 951 | |
952 | /* (3) if the prefix is equal to an active configured address range */ | |
953 | /* or if the NU bit is set in the prefix */ | |
954 | if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_PREFIX)) { | |
8934b81c QY |
955 | /* must have been set in previous block */ |
956 | assert(prefix_lsa); | |
957 | ||
d62a17ae | 958 | range = ospf6_route_lookup(&prefix, oa->range_table); |
959 | if (range) { | |
960 | if (is_debug) | |
961 | zlog_debug( | |
962 | "Prefix is equal to address range, ignore"); | |
963 | if (old) | |
e285b70d | 964 | ospf6_route_remove(old, table); |
d62a17ae | 965 | return; |
966 | } | |
967 | ||
968 | if (CHECK_FLAG(prefix_lsa->prefix.prefix_options, | |
969 | OSPF6_PREFIX_OPTION_NU) | |
970 | || CHECK_FLAG(prefix_lsa->prefix.prefix_options, | |
971 | OSPF6_PREFIX_OPTION_LA)) { | |
972 | if (is_debug) | |
973 | zlog_debug("Prefix has NU/LA bit set, ignore"); | |
974 | if (old) | |
e285b70d | 975 | ospf6_route_remove(old, table); |
d62a17ae | 976 | return; |
977 | } | |
01879114 | 978 | } |
d62a17ae | 979 | |
980 | if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_ROUTER)) { | |
981 | /* To pass test suites */ | |
554bfe88 | 982 | assert(router_lsa); |
d62a17ae | 983 | if (!OSPF6_OPT_ISSET(router_lsa->options, OSPF6_OPT_R) |
984 | || !OSPF6_OPT_ISSET(router_lsa->options, OSPF6_OPT_V6)) { | |
985 | if (is_debug) | |
986 | zlog_debug("Prefix has NU/LA bit set, ignore"); | |
987 | if (old) | |
e285b70d | 988 | ospf6_route_remove(old, table); |
d62a17ae | 989 | |
990 | return; | |
991 | } | |
992 | /* Avoid infinite recursion if someone has maliciously announced | |
993 | an | |
994 | Inter-Router LSA for an ABR | |
995 | */ | |
996 | if (lsa->header->adv_router == router_lsa->router_id) { | |
997 | if (is_debug) | |
998 | zlog_debug( | |
999 | "Ignorning Inter-Router LSA for an ABR (%s)", | |
1000 | buf); | |
1001 | if (old) | |
e285b70d | 1002 | ospf6_route_remove(old, table); |
d62a17ae | 1003 | |
1004 | return; | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | /* (4) if the routing table entry for the ABR does not exist */ | |
1009 | ospf6_linkstate_prefix(lsa->header->adv_router, htonl(0), &abr_prefix); | |
1010 | abr_entry = ospf6_route_lookup(&abr_prefix, oa->ospf6->brouter_table); | |
1011 | if (abr_entry == NULL || abr_entry->path.area_id != oa->area_id | |
1012 | || CHECK_FLAG(abr_entry->flag, OSPF6_ROUTE_REMOVE) | |
1013 | || !CHECK_FLAG(abr_entry->path.router_bits, OSPF6_ROUTER_BIT_B)) { | |
1014 | if (is_debug) | |
5e81f5dd DS |
1015 | zlog_debug( |
1016 | "%s: ABR router entry does not exist, ignore", | |
1017 | __func__); | |
a2d0055a CS |
1018 | if (old) { |
1019 | if (old->type == OSPF6_DEST_TYPE_ROUTER && | |
1020 | oa->intra_brouter_calc) { | |
1021 | if (is_debug) | |
1022 | zlog_debug( | |
5e81f5dd DS |
1023 | "%s: intra_brouter_calc is on, skip brouter remove: %s (%p)", |
1024 | __func__, buf, (void *)old); | |
a2d0055a CS |
1025 | } else { |
1026 | if (is_debug) | |
5e81f5dd DS |
1027 | zlog_debug( |
1028 | "%s: remove old entry: %s %p ", | |
1029 | __func__, buf, (void *)old); | |
e285b70d | 1030 | ospf6_route_remove(old, table); |
a2d0055a CS |
1031 | } |
1032 | } | |
d62a17ae | 1033 | return; |
1034 | } | |
1035 | ||
1036 | /* Check import list */ | |
1037 | if (IMPORT_NAME(oa)) { | |
1038 | if (IMPORT_LIST(oa) == NULL) | |
1039 | IMPORT_LIST(oa) = | |
1040 | access_list_lookup(AFI_IP6, IMPORT_NAME(oa)); | |
1041 | ||
1042 | if (IMPORT_LIST(oa)) | |
1043 | if (access_list_apply(IMPORT_LIST(oa), &prefix) | |
1044 | == FILTER_DENY) { | |
1045 | if (is_debug) | |
1046 | zlog_debug( | |
1047 | "Prefix was denied by import-list"); | |
1048 | if (old) | |
e285b70d | 1049 | ospf6_route_remove(old, table); |
d62a17ae | 1050 | return; |
1051 | } | |
1052 | } | |
1053 | ||
1054 | /* Check input prefix-list */ | |
6f19bb0e | 1055 | if (PREFIX_LIST_IN(oa)) { |
427f8e61 DL |
1056 | if (prefix_list_apply(PREFIX_LIST_IN(oa), &prefix) |
1057 | != PREFIX_PERMIT) { | |
1058 | if (is_debug) | |
996c9314 | 1059 | zlog_debug("Prefix was denied by prefix-list"); |
427f8e61 | 1060 | if (old) |
e285b70d | 1061 | ospf6_route_remove(old, table); |
427f8e61 DL |
1062 | return; |
1063 | } | |
6f19bb0e | 1064 | } |
d62a17ae | 1065 | |
1066 | /* (5),(6): the path preference is handled by the sorting | |
1067 | in the routing table. Always install the path by substituting | |
1068 | old route (if any). */ | |
6f19bb0e | 1069 | route = ospf6_route_create(); |
d62a17ae | 1070 | |
1071 | route->type = type; | |
1072 | route->prefix = prefix; | |
1073 | route->path.origin.type = lsa->header->type; | |
1074 | route->path.origin.id = lsa->header->id; | |
1075 | route->path.origin.adv_router = lsa->header->adv_router; | |
1076 | route->path.router_bits = router_bits; | |
1077 | route->path.options[0] = options[0]; | |
1078 | route->path.options[1] = options[1]; | |
1079 | route->path.options[2] = options[2]; | |
1080 | route->path.prefix_options = prefix_options; | |
1081 | route->path.area_id = oa->area_id; | |
1082 | route->path.type = OSPF6_PATH_TYPE_INTER; | |
1083 | route->path.cost = abr_entry->path.cost + cost; | |
1084 | ||
6f19bb0e CS |
1085 | /* copy brouter rechable nexthops into the route. */ |
1086 | ospf6_route_copy_nexthops(route, abr_entry); | |
064d4355 | 1087 | |
d62a17ae | 1088 | /* (7) If the routes are identical, copy the next hops over to existing |
1089 | route. ospf6's route table implementation will otherwise string both | |
1090 | routes, but keep the older one as the best route since the routes | |
1091 | are identical. | |
1092 | */ | |
1093 | old = ospf6_route_lookup(&prefix, table); | |
1094 | ||
99ab28cb CS |
1095 | for (old_route = old; old_route; old_route = old_route->next) { |
1096 | if (!ospf6_route_is_same(old_route, route) || | |
1097 | (old_route->type != route->type) || | |
1098 | (old_route->path.type != route->path.type)) | |
1099 | continue; | |
064d4355 | 1100 | |
99ab28cb | 1101 | if ((ospf6_route_cmp(route, old_route) != 0)) { |
2dbe669b | 1102 | if (is_debug) |
5e81f5dd | 1103 | zlog_debug( |
2dbe669b DA |
1104 | "%s: old %p %pFX cost %u new route cost %u are not same", |
1105 | __func__, (void *)old_route, &prefix, | |
5e81f5dd | 1106 | old_route->path.cost, route->path.cost); |
6f19bb0e CS |
1107 | |
1108 | /* Check new route's adv. router is same in one of | |
1109 | * the paths with differed cost, if so remove the | |
1110 | * old path as later new route will be added. | |
1111 | */ | |
1112 | if (listcount(old_route->paths) > 1) | |
1113 | ospf6_abr_old_path_update(old_route, route, | |
e285b70d | 1114 | table); |
99ab28cb CS |
1115 | continue; |
1116 | } | |
1117 | ||
6f19bb0e | 1118 | ospf6_route_merge_nexthops(old_route, route); |
99ab28cb | 1119 | old_entry_updated = true; |
6f19bb0e CS |
1120 | |
1121 | for (ALL_LIST_ELEMENTS_RO(old_route->paths, anode, | |
1122 | o_path)) { | |
1123 | if (o_path->area_id == route->path.area_id && | |
1124 | (memcmp(&(o_path)->origin, &(route)->path.origin, | |
1125 | sizeof(struct ospf6_ls_origin)) == 0)) | |
1126 | break; | |
1127 | } | |
1128 | ||
1129 | /* New adv. router for a existing path add to paths list */ | |
1130 | if (o_path == NULL) { | |
1131 | ecmp_path = ospf6_path_dup(&route->path); | |
1132 | ||
1133 | /* Add a nh_list to new ecmp path */ | |
1134 | ospf6_copy_nexthops(ecmp_path->nh_list, route->nh_list); | |
1135 | ||
1136 | /* Add the new path to route's path list */ | |
1137 | listnode_add_sort(old_route->paths, ecmp_path); | |
1138 | ||
1139 | if (is_debug) { | |
5e81f5dd | 1140 | zlog_debug( |
dc138868 DL |
1141 | "%s: route %pFX cost %u another path %pI4 added with nh %u, effective paths %u nh %u", |
1142 | __func__, &route->prefix, | |
1143 | old_route->path.cost, | |
1144 | &ecmp_path->origin.adv_router, | |
5e81f5dd DS |
1145 | listcount(ecmp_path->nh_list), |
1146 | old_route->paths | |
1147 | ? listcount(old_route->paths) | |
1148 | : 0, | |
1149 | listcount(old_route->nh_list)); | |
6f19bb0e CS |
1150 | } |
1151 | } else { | |
14ff96e6 DS |
1152 | struct ospf6_route *tmp_route = ospf6_route_create(); |
1153 | ||
1154 | ospf6_copy_nexthops(tmp_route->nh_list, | |
1155 | o_path->nh_list); | |
1156 | ||
1157 | if (ospf6_route_cmp_nexthops(tmp_route, route) != 0) { | |
1158 | /* adv. router exists in the list, update nhs */ | |
1159 | list_delete_all_node(o_path->nh_list); | |
1160 | ospf6_copy_nexthops(o_path->nh_list, | |
1161 | route->nh_list); | |
1162 | ospf6_route_delete(tmp_route); | |
1163 | } else { | |
1164 | /* adv. router has no change in nhs */ | |
1165 | old_entry_updated = false; | |
1166 | ospf6_route_delete(tmp_route); | |
1167 | continue; | |
1168 | } | |
6f19bb0e CS |
1169 | } |
1170 | ||
064d4355 | 1171 | if (is_debug) |
5e81f5dd DS |
1172 | zlog_debug( |
1173 | "%s: Update route: %s %p old cost %u new cost %u nh %u", | |
1174 | __func__, buf, (void *)old_route, | |
1175 | old_route->path.cost, route->path.cost, | |
1176 | listcount(route->nh_list)); | |
064d4355 | 1177 | |
6f19bb0e CS |
1178 | /* For Inter-Prefix route: Update RIB/FIB, |
1179 | * For Inter-Router trigger summary update | |
1180 | */ | |
d62a17ae | 1181 | if (table->hook_add) |
e285b70d | 1182 | (*table->hook_add)(old_route); |
d62a17ae | 1183 | |
1184 | /* Delete new route */ | |
1185 | ospf6_route_delete(route); | |
99ab28cb CS |
1186 | break; |
1187 | } | |
1188 | ||
1189 | if (old_entry_updated == false) { | |
6f19bb0e | 1190 | if (is_debug) { |
5e81f5dd | 1191 | zlog_debug( |
dc138868 | 1192 | "%s: Install route: %s cost %u nh %u adv_router %pI4", |
5e81f5dd | 1193 | __func__, buf, route->path.cost, |
dc138868 DL |
1194 | listcount(route->nh_list), |
1195 | &route->path.origin.adv_router); | |
6f19bb0e CS |
1196 | } |
1197 | ||
1198 | path = ospf6_path_dup(&route->path); | |
1199 | ospf6_copy_nexthops(path->nh_list, abr_entry->nh_list); | |
1200 | listnode_add_sort(route->paths, path); | |
d62a17ae | 1201 | /* ospf6_ia_add_nw_route (table, &prefix, route); */ |
e285b70d | 1202 | ospf6_route_add(route, table); |
c3c0ac83 | 1203 | } |
049207c3 | 1204 | } |
1205 | ||
beadc736 | 1206 | void ospf6_abr_examin_brouter(uint32_t router_id, struct ospf6_route *route, |
1207 | struct ospf6 *ospf6) | |
ccb59b11 | 1208 | { |
d62a17ae | 1209 | struct ospf6_lsa *lsa; |
1210 | struct ospf6_area *oa; | |
d7c0a89a | 1211 | uint16_t type; |
d62a17ae | 1212 | |
beadc736 | 1213 | oa = ospf6_area_lookup(route->path.area_id, ospf6); |
d62a17ae | 1214 | /* |
1215 | * It is possible to designate a non backbone | |
1216 | * area first. If that is the case safely | |
1217 | * fall out of this function. | |
1218 | */ | |
1219 | if (oa == NULL) | |
1220 | return; | |
1221 | ||
1222 | type = htons(OSPF6_LSTYPE_INTER_ROUTER); | |
1223 | for (ALL_LSDB_TYPED_ADVRTR(oa->lsdb, type, router_id, lsa)) | |
1224 | ospf6_abr_examin_summary(lsa, oa); | |
1225 | ||
1226 | type = htons(OSPF6_LSTYPE_INTER_PREFIX); | |
1227 | for (ALL_LSDB_TYPED_ADVRTR(oa->lsdb, type, router_id, lsa)) | |
1228 | ospf6_abr_examin_summary(lsa, oa); | |
ccb59b11 | 1229 | } |
1230 | ||
d62a17ae | 1231 | void ospf6_abr_reimport(struct ospf6_area *oa) |
34956b31 | 1232 | { |
d62a17ae | 1233 | struct ospf6_lsa *lsa; |
d7c0a89a | 1234 | uint16_t type; |
34956b31 | 1235 | |
d62a17ae | 1236 | type = htons(OSPF6_LSTYPE_INTER_ROUTER); |
1237 | for (ALL_LSDB_TYPED(oa->lsdb, type, lsa)) | |
1238 | ospf6_abr_examin_summary(lsa, oa); | |
34956b31 | 1239 | |
d62a17ae | 1240 | type = htons(OSPF6_LSTYPE_INTER_PREFIX); |
1241 | for (ALL_LSDB_TYPED(oa->lsdb, type, lsa)) | |
1242 | ospf6_abr_examin_summary(lsa, oa); | |
34956b31 | 1243 | } |
1244 | ||
d62a17ae | 1245 | void ospf6_abr_prefix_resummarize(struct ospf6 *o) |
ca1f4309 | 1246 | { |
d62a17ae | 1247 | struct ospf6_route *route; |
ca1f4309 | 1248 | |
d62a17ae | 1249 | if (IS_OSPF6_DEBUG_ABR) |
1250 | zlog_debug("Re-examining Inter-Prefix Summaries"); | |
ca1f4309 | 1251 | |
d62a17ae | 1252 | for (route = ospf6_route_head(o->route_table); route; |
1253 | route = ospf6_route_next(route)) | |
beadc736 | 1254 | ospf6_abr_originate_summary(route, o); |
ca1f4309 | 1255 | |
d62a17ae | 1256 | if (IS_OSPF6_DEBUG_ABR) |
1257 | zlog_debug("Finished re-examining Inter-Prefix Summaries"); | |
ca1f4309 | 1258 | } |
34956b31 | 1259 | |
6b0655a2 | 1260 | |
049207c3 | 1261 | /* Display functions */ |
d62a17ae | 1262 | static char *ospf6_inter_area_prefix_lsa_get_prefix_str(struct ospf6_lsa *lsa, |
1263 | char *buf, int buflen, | |
1264 | int pos) | |
e68a6767 | 1265 | { |
d62a17ae | 1266 | struct ospf6_inter_prefix_lsa *prefix_lsa; |
1267 | struct in6_addr in6; | |
1268 | ||
1269 | if (lsa != NULL) { | |
1270 | prefix_lsa = | |
1271 | (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( | |
1272 | lsa->header); | |
1273 | ||
b8ce0c36 | 1274 | ospf6_prefix_in6_addr(&in6, prefix_lsa, &prefix_lsa->prefix); |
d62a17ae | 1275 | if (buf) { |
1276 | inet_ntop(AF_INET6, &in6, buf, buflen); | |
1277 | sprintf(&buf[strlen(buf)], "/%d", | |
1278 | prefix_lsa->prefix.prefix_length); | |
1279 | } | |
e68a6767 | 1280 | } |
e68a6767 | 1281 | |
d62a17ae | 1282 | return (buf); |
e68a6767 DD |
1283 | } |
1284 | ||
d62a17ae | 1285 | static int ospf6_inter_area_prefix_lsa_show(struct vty *vty, |
e4bacbaa YR |
1286 | struct ospf6_lsa *lsa, |
1287 | json_object *json_obj, | |
1288 | bool use_json) | |
049207c3 | 1289 | { |
d62a17ae | 1290 | struct ospf6_inter_prefix_lsa *prefix_lsa; |
1291 | char buf[INET6_ADDRSTRLEN]; | |
049207c3 | 1292 | |
d62a17ae | 1293 | prefix_lsa = (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( |
1294 | lsa->header); | |
049207c3 | 1295 | |
e4bacbaa YR |
1296 | if (use_json) { |
1297 | json_object_int_add( | |
1298 | json_obj, "metric", | |
1299 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(prefix_lsa)); | |
1300 | ospf6_prefix_options_printbuf(prefix_lsa->prefix.prefix_options, | |
1301 | buf, sizeof(buf)); | |
1302 | json_object_string_add(json_obj, "prefixOptions", buf); | |
1303 | json_object_string_add( | |
1304 | json_obj, "prefix", | |
1305 | ospf6_inter_area_prefix_lsa_get_prefix_str( | |
1306 | lsa, buf, sizeof(buf), 0)); | |
1307 | } else { | |
1308 | vty_out(vty, " Metric: %lu\n", | |
1309 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(prefix_lsa)); | |
049207c3 | 1310 | |
e4bacbaa YR |
1311 | ospf6_prefix_options_printbuf(prefix_lsa->prefix.prefix_options, |
1312 | buf, sizeof(buf)); | |
1313 | vty_out(vty, " Prefix Options: %s\n", buf); | |
049207c3 | 1314 | |
e4bacbaa YR |
1315 | vty_out(vty, " Prefix: %s\n", |
1316 | ospf6_inter_area_prefix_lsa_get_prefix_str( | |
1317 | lsa, buf, sizeof(buf), 0)); | |
1318 | } | |
049207c3 | 1319 | |
d62a17ae | 1320 | return 0; |
049207c3 | 1321 | } |
1322 | ||
d62a17ae | 1323 | static char *ospf6_inter_area_router_lsa_get_prefix_str(struct ospf6_lsa *lsa, |
1324 | char *buf, int buflen, | |
1325 | int pos) | |
e68a6767 | 1326 | { |
d62a17ae | 1327 | struct ospf6_inter_router_lsa *router_lsa; |
e68a6767 | 1328 | |
d62a17ae | 1329 | if (lsa != NULL) { |
1330 | router_lsa = | |
1331 | (struct ospf6_inter_router_lsa *)OSPF6_LSA_HEADER_END( | |
1332 | lsa->header); | |
e68a6767 DD |
1333 | |
1334 | ||
d62a17ae | 1335 | if (buf) |
1336 | inet_ntop(AF_INET, &router_lsa->router_id, buf, buflen); | |
1337 | } | |
e68a6767 | 1338 | |
d62a17ae | 1339 | return (buf); |
e68a6767 DD |
1340 | } |
1341 | ||
d62a17ae | 1342 | static int ospf6_inter_area_router_lsa_show(struct vty *vty, |
e4bacbaa YR |
1343 | struct ospf6_lsa *lsa, |
1344 | json_object *json_obj, | |
1345 | bool use_json) | |
049207c3 | 1346 | { |
d62a17ae | 1347 | struct ospf6_inter_router_lsa *router_lsa; |
1348 | char buf[64]; | |
049207c3 | 1349 | |
d62a17ae | 1350 | router_lsa = (struct ospf6_inter_router_lsa *)OSPF6_LSA_HEADER_END( |
1351 | lsa->header); | |
049207c3 | 1352 | |
d62a17ae | 1353 | ospf6_options_printbuf(router_lsa->options, buf, sizeof(buf)); |
e4bacbaa YR |
1354 | if (use_json) { |
1355 | json_object_string_add(json_obj, "options", buf); | |
1356 | json_object_int_add( | |
1357 | json_obj, "metric", | |
1358 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(router_lsa)); | |
1359 | } else { | |
1360 | vty_out(vty, " Options: %s\n", buf); | |
1361 | vty_out(vty, " Metric: %lu\n", | |
1362 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(router_lsa)); | |
1363 | } | |
e68a6767 | 1364 | |
d62a17ae | 1365 | inet_ntop(AF_INET, &router_lsa->router_id, buf, sizeof(buf)); |
e4bacbaa YR |
1366 | if (use_json) |
1367 | json_object_string_add(json_obj, "destinationRouterId", buf); | |
1368 | else | |
1369 | vty_out(vty, " Destination Router ID: %s\n", buf); | |
049207c3 | 1370 | |
d62a17ae | 1371 | return 0; |
049207c3 | 1372 | } |
1373 | ||
1374 | /* Debug commands */ | |
1375 | DEFUN (debug_ospf6_abr, | |
1376 | debug_ospf6_abr_cmd, | |
1377 | "debug ospf6 abr", | |
1378 | DEBUG_STR | |
1379 | OSPF6_STR | |
1380 | "Debug OSPFv3 ABR function\n" | |
1381 | ) | |
1382 | { | |
d62a17ae | 1383 | OSPF6_DEBUG_ABR_ON(); |
1384 | return CMD_SUCCESS; | |
049207c3 | 1385 | } |
1386 | ||
1387 | DEFUN (no_debug_ospf6_abr, | |
1388 | no_debug_ospf6_abr_cmd, | |
1389 | "no debug ospf6 abr", | |
1390 | NO_STR | |
1391 | DEBUG_STR | |
1392 | OSPF6_STR | |
1393 | "Debug OSPFv3 ABR function\n" | |
1394 | ) | |
1395 | { | |
d62a17ae | 1396 | OSPF6_DEBUG_ABR_OFF(); |
1397 | return CMD_SUCCESS; | |
049207c3 | 1398 | } |
1399 | ||
d62a17ae | 1400 | int config_write_ospf6_debug_abr(struct vty *vty) |
049207c3 | 1401 | { |
d62a17ae | 1402 | if (IS_OSPF6_DEBUG_ABR) |
1403 | vty_out(vty, "debug ospf6 abr\n"); | |
1404 | return 0; | |
049207c3 | 1405 | } |
1406 | ||
d62a17ae | 1407 | void install_element_ospf6_debug_abr(void) |
049207c3 | 1408 | { |
d62a17ae | 1409 | install_element(ENABLE_NODE, &debug_ospf6_abr_cmd); |
1410 | install_element(ENABLE_NODE, &no_debug_ospf6_abr_cmd); | |
1411 | install_element(CONFIG_NODE, &debug_ospf6_abr_cmd); | |
1412 | install_element(CONFIG_NODE, &no_debug_ospf6_abr_cmd); | |
049207c3 | 1413 | } |
1414 | ||
4062abfa | 1415 | static struct ospf6_lsa_handler inter_prefix_handler = { |
3981b5c7 VJ |
1416 | .lh_type = OSPF6_LSTYPE_INTER_PREFIX, |
1417 | .lh_name = "Inter-Prefix", | |
1418 | .lh_short_name = "IAP", | |
1419 | .lh_show = ospf6_inter_area_prefix_lsa_show, | |
1420 | .lh_get_prefix_str = ospf6_inter_area_prefix_lsa_get_prefix_str, | |
996c9314 | 1421 | .lh_debug = 0}; |
6452df09 | 1422 | |
4062abfa | 1423 | static struct ospf6_lsa_handler inter_router_handler = { |
3981b5c7 VJ |
1424 | .lh_type = OSPF6_LSTYPE_INTER_ROUTER, |
1425 | .lh_name = "Inter-Router", | |
1426 | .lh_short_name = "IAR", | |
1427 | .lh_show = ospf6_inter_area_router_lsa_show, | |
1428 | .lh_get_prefix_str = ospf6_inter_area_router_lsa_get_prefix_str, | |
996c9314 | 1429 | .lh_debug = 0}; |
6452df09 | 1430 | |
d62a17ae | 1431 | void ospf6_abr_init(void) |
049207c3 | 1432 | { |
d62a17ae | 1433 | ospf6_install_lsa_handler(&inter_prefix_handler); |
1434 | ospf6_install_lsa_handler(&inter_router_handler); | |
049207c3 | 1435 | } |