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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" |
5f6635b9 | 49 | #include "ospf6_asbr.h" |
3b68735f | 50 | #include "ospf6_abr.h" |
049207c3 | 51 | #include "ospf6d.h" |
ad500b22 | 52 | #include "ospf6_nssa.h" |
049207c3 | 53 | |
54 | unsigned char conf_debug_ospf6_abr; | |
55 | ||
bc465fb6 | 56 | int ospf6_ls_origin_same(struct ospf6_path *o_path, struct ospf6_path *r_path) |
25dd89e3 | 57 | { |
bc465fb6 MN |
58 | if (((o_path->origin.type == r_path->origin.type) |
59 | && (o_path->origin.id == r_path->origin.id) | |
60 | && (o_path->origin.adv_router == r_path->origin.adv_router))) | |
25dd89e3 MN |
61 | return 1; |
62 | else | |
63 | return 0; | |
64 | } | |
65 | ||
95b3f03d | 66 | bool ospf6_check_and_set_router_abr(struct ospf6 *o) |
6452df09 | 67 | { |
d62a17ae | 68 | struct listnode *node; |
69 | struct ospf6_area *oa; | |
70 | int area_count = 0; | |
ad500b22 | 71 | bool is_backbone = false; |
6452df09 | 72 | |
ad500b22 K |
73 | for (ALL_LIST_ELEMENTS_RO(o->area_list, node, oa)) { |
74 | if (IS_OSPF6_DEBUG_ABR) | |
75 | zlog_debug("%s, area_id %pI4", __func__, &oa->area_id); | |
d62a17ae | 76 | if (IS_AREA_ENABLED(oa)) |
77 | area_count++; | |
6452df09 | 78 | |
ad500b22 K |
79 | if (o->backbone == oa) |
80 | is_backbone = true; | |
81 | } | |
82 | ||
83 | if ((area_count > 1) && (is_backbone)) { | |
84 | if (IS_OSPF6_DEBUG_ABR) | |
85 | zlog_debug("%s : set flag OSPF6_FLAG_ABR", __func__); | |
86 | SET_FLAG(o->flag, OSPF6_FLAG_ABR); | |
95b3f03d | 87 | return true; |
ad500b22 K |
88 | } else { |
89 | if (IS_OSPF6_DEBUG_ABR) | |
90 | zlog_debug("%s : reset flag OSPF6_FLAG_ABR", __func__); | |
91 | UNSET_FLAG(o->flag, OSPF6_FLAG_ABR); | |
95b3f03d | 92 | return false; |
ad500b22 | 93 | } |
6452df09 | 94 | } |
95 | ||
d62a17ae | 96 | static int ospf6_abr_nexthops_belong_to_area(struct ospf6_route *route, |
97 | struct ospf6_area *area) | |
c3c0ac83 | 98 | { |
d62a17ae | 99 | struct ospf6_interface *oi; |
100 | ||
101 | oi = ospf6_interface_lookup_by_ifindex( | |
c5d28568 | 102 | ospf6_route_get_first_nh_index(route), area->ospf6->vrf_id); |
d62a17ae | 103 | if (oi && oi->area && oi->area == area) |
104 | return 1; | |
105 | else | |
106 | return 0; | |
c3c0ac83 DS |
107 | } |
108 | ||
578e1c53 | 109 | static void ospf6_abr_delete_route(struct ospf6_route *summary, |
d62a17ae | 110 | struct ospf6_route_table *summary_table, |
e285b70d | 111 | struct ospf6_lsa *old) |
c3c0ac83 | 112 | { |
d62a17ae | 113 | if (summary) { |
e285b70d | 114 | ospf6_route_remove(summary, summary_table); |
d62a17ae | 115 | } |
c3c0ac83 | 116 | |
d62a17ae | 117 | if (old && !OSPF6_LSA_IS_MAXAGE(old)) |
118 | ospf6_lsa_purge(old); | |
c3c0ac83 DS |
119 | } |
120 | ||
d62a17ae | 121 | void ospf6_abr_enable_area(struct ospf6_area *area) |
3b68735f | 122 | { |
d62a17ae | 123 | struct ospf6_area *oa; |
124 | struct listnode *node, *nnode; | |
3b68735f | 125 | |
d62a17ae | 126 | for (ALL_LIST_ELEMENTS(area->ospf6->area_list, node, nnode, oa)) |
127 | /* update B bit for each area */ | |
128 | OSPF6_ROUTER_LSA_SCHEDULE(oa); | |
3b68735f | 129 | } |
130 | ||
d62a17ae | 131 | void ospf6_abr_disable_area(struct ospf6_area *area) |
3b68735f | 132 | { |
d62a17ae | 133 | struct ospf6_area *oa; |
134 | struct ospf6_route *ro, *nro; | |
135 | struct ospf6_lsa *old; | |
136 | struct listnode *node, *nnode; | |
137 | ||
138 | /* Withdraw all summary prefixes previously originated */ | |
139 | for (ro = ospf6_route_head(area->summary_prefix); ro; ro = nro) { | |
140 | nro = ospf6_route_next(ro); | |
141 | old = ospf6_lsdb_lookup(ro->path.origin.type, | |
142 | ro->path.origin.id, | |
143 | area->ospf6->router_id, area->lsdb); | |
144 | if (old) | |
145 | ospf6_lsa_purge(old); | |
e285b70d | 146 | ospf6_route_remove(ro, area->summary_prefix); |
d62a17ae | 147 | } |
148 | ||
149 | /* Withdraw all summary router-routes previously originated */ | |
150 | for (ro = ospf6_route_head(area->summary_router); ro; ro = nro) { | |
151 | nro = ospf6_route_next(ro); | |
152 | old = ospf6_lsdb_lookup(ro->path.origin.type, | |
153 | ro->path.origin.id, | |
154 | area->ospf6->router_id, area->lsdb); | |
155 | if (old) | |
156 | ospf6_lsa_purge(old); | |
e285b70d | 157 | ospf6_route_remove(ro, area->summary_router); |
d62a17ae | 158 | } |
159 | ||
160 | /* Schedule Router-LSA for each area (ABR status may change) */ | |
161 | for (ALL_LIST_ELEMENTS(area->ospf6->area_list, node, nnode, oa)) | |
162 | /* update B bit for each area */ | |
163 | OSPF6_ROUTER_LSA_SCHEDULE(oa); | |
3b68735f | 164 | } |
165 | ||
049207c3 | 166 | /* RFC 2328 12.4.3. Summary-LSAs */ |
ca1f4309 DS |
167 | /* Returns 1 if a summary LSA has been generated for the area */ |
168 | /* This is used by the area/range logic to add/remove blackhole routes */ | |
d62a17ae | 169 | int ospf6_abr_originate_summary_to_area(struct ospf6_route *route, |
170 | struct ospf6_area *area) | |
049207c3 | 171 | { |
d62a17ae | 172 | struct ospf6_lsa *lsa, *old = NULL; |
173 | struct ospf6_route *summary, *range = NULL; | |
174 | struct ospf6_area *route_area; | |
175 | char buffer[OSPF6_MAX_LSASIZE]; | |
176 | struct ospf6_lsa_header *lsa_header; | |
177 | caddr_t p; | |
178 | struct ospf6_inter_prefix_lsa *prefix_lsa; | |
179 | struct ospf6_inter_router_lsa *router_lsa; | |
180 | struct ospf6_route_table *summary_table = NULL; | |
d7c0a89a | 181 | uint16_t type; |
d62a17ae | 182 | int is_debug = 0; |
183 | ||
9142948e RW |
184 | if (IS_OSPF6_DEBUG_ABR) { |
185 | char buf[BUFSIZ]; | |
186 | ||
187 | if (route->type == OSPF6_DEST_TYPE_ROUTER) | |
188 | inet_ntop(AF_INET, | |
189 | &ADV_ROUTER_IN_PREFIX(&route->prefix), buf, | |
190 | sizeof(buf)); | |
191 | else | |
192 | prefix2str(&route->prefix, buf, sizeof(buf)); | |
193 | ||
194 | zlog_debug("%s : start area %s, route %s", __func__, area->name, | |
195 | buf); | |
196 | } | |
ad500b22 K |
197 | |
198 | if (route->type == OSPF6_DEST_TYPE_ROUTER) | |
199 | summary_table = area->summary_router; | |
200 | else | |
201 | summary_table = area->summary_prefix; | |
202 | ||
203 | summary = ospf6_route_lookup(&route->prefix, summary_table); | |
204 | if (summary) { | |
205 | old = ospf6_lsdb_lookup(summary->path.origin.type, | |
206 | summary->path.origin.id, | |
207 | area->ospf6->router_id, area->lsdb); | |
208 | /* Reset the OSPF6_LSA_UNAPPROVED flag */ | |
209 | if (old) | |
210 | UNSET_FLAG(old->flag, OSPF6_LSA_UNAPPROVED); | |
211 | } | |
212 | ||
d62a17ae | 213 | /* Only destination type network, range or ASBR are considered */ |
214 | if (route->type != OSPF6_DEST_TYPE_NETWORK | |
215 | && route->type != OSPF6_DEST_TYPE_RANGE | |
216 | && ((route->type != OSPF6_DEST_TYPE_ROUTER) | |
217 | || !CHECK_FLAG(route->path.router_bits, OSPF6_ROUTER_BIT_E))) { | |
ad500b22 K |
218 | if (IS_OSPF6_DEBUG_ABR) |
219 | zlog_debug( | |
220 | "%s: Route type %d flag 0x%x is none of network, range nor ASBR, ignore", | |
221 | __func__, route->type, route->path.router_bits); | |
d62a17ae | 222 | return 0; |
c3c0ac83 | 223 | } |
d62a17ae | 224 | |
225 | /* AS External routes are never considered */ | |
226 | if (route->path.type == OSPF6_PATH_TYPE_EXTERNAL1 | |
227 | || route->path.type == OSPF6_PATH_TYPE_EXTERNAL2) { | |
ad500b22 K |
228 | if (IS_OSPF6_DEBUG_ABR) |
229 | zlog_debug("%s : Path type is external, skip", | |
230 | __func__); | |
d62a17ae | 231 | return 0; |
c3c0ac83 | 232 | } |
d62a17ae | 233 | |
234 | /* do not generate if the path's area is the same as target area */ | |
235 | if (route->path.area_id == area->area_id) { | |
ad500b22 K |
236 | if (IS_OSPF6_DEBUG_ABR) |
237 | zlog_debug( | |
238 | "%s: The route is in the area itself, ignore", | |
239 | __func__); | |
d62a17ae | 240 | return 0; |
241 | } | |
242 | ||
f4f0098c RW |
243 | if (route->type == OSPF6_DEST_TYPE_NETWORK) { |
244 | bool filter = false; | |
245 | ||
246 | route_area = | |
247 | ospf6_area_lookup(route->path.area_id, area->ospf6); | |
248 | assert(route_area); | |
249 | ||
250 | /* Check export-list */ | |
251 | if (EXPORT_LIST(route_area) | |
252 | && access_list_apply(EXPORT_LIST(route_area), | |
253 | &route->prefix) | |
254 | == FILTER_DENY) { | |
255 | if (IS_OSPF6_DEBUG_ABR) | |
256 | zlog_debug( | |
257 | "%s: prefix %pFX was denied by export-list", | |
258 | __func__, &route->prefix); | |
259 | filter = true; | |
260 | } | |
261 | ||
262 | /* Check output prefix-list */ | |
263 | if (PREFIX_LIST_OUT(route_area) | |
264 | && prefix_list_apply(PREFIX_LIST_OUT(route_area), | |
265 | &route->prefix) | |
266 | != PREFIX_PERMIT) { | |
267 | if (IS_OSPF6_DEBUG_ABR) | |
268 | zlog_debug( | |
269 | "%s: prefix %pFX was denied by prefix-list out", | |
270 | __func__, &route->prefix); | |
271 | filter = true; | |
272 | } | |
273 | ||
274 | /* Check import-list */ | |
275 | if (IMPORT_LIST(area) | |
276 | && access_list_apply(IMPORT_LIST(area), &route->prefix) | |
277 | == FILTER_DENY) { | |
278 | if (IS_OSPF6_DEBUG_ABR) | |
279 | zlog_debug( | |
280 | "%s: prefix %pFX was denied by import-list", | |
281 | __func__, &route->prefix); | |
282 | filter = true; | |
283 | } | |
284 | ||
285 | /* Check input prefix-list */ | |
286 | if (PREFIX_LIST_IN(area) | |
287 | && prefix_list_apply(PREFIX_LIST_IN(area), &route->prefix) | |
288 | != PREFIX_PERMIT) { | |
289 | if (IS_OSPF6_DEBUG_ABR) | |
290 | zlog_debug( | |
291 | "%s: prefix %pFX was denied by prefix-list in", | |
292 | __func__, &route->prefix); | |
293 | filter = true; | |
294 | } | |
295 | ||
296 | if (filter) { | |
297 | if (summary) { | |
298 | ospf6_route_remove(summary, summary_table); | |
299 | if (old) | |
300 | ospf6_lsa_purge(old); | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | } | |
305 | ||
d62a17ae | 306 | /* do not generate if the nexthops belongs to the target area */ |
307 | if (ospf6_abr_nexthops_belong_to_area(route, area)) { | |
ad500b22 K |
308 | if (IS_OSPF6_DEBUG_ABR) |
309 | zlog_debug( | |
310 | "%s: The route's nexthop is in the same area, ignore", | |
311 | __func__); | |
d62a17ae | 312 | return 0; |
313 | } | |
314 | ||
315 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
316 | if (ADV_ROUTER_IN_PREFIX(&route->prefix) | |
317 | == area->ospf6->router_id) { | |
ad500b22 K |
318 | if (IS_OSPF6_DEBUG_ABR) |
319 | zlog_debug( | |
320 | "%s: Skipping ASBR announcement for ABR (%pI4)", | |
321 | __func__, | |
322 | &ADV_ROUTER_IN_PREFIX(&route->prefix)); | |
d62a17ae | 323 | return 0; |
324 | } | |
325 | } | |
326 | ||
327 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
328 | if (IS_OSPF6_DEBUG_ABR | |
329 | || IS_OSPF6_DEBUG_ORIGINATE(INTER_ROUTER)) { | |
330 | is_debug++; | |
ad500b22 K |
331 | if (IS_OSPF6_DEBUG_ABR) |
332 | zlog_debug( | |
333 | "Originating summary in area %s for ASBR %pI4", | |
334 | area->name, | |
335 | &ADV_ROUTER_IN_PREFIX(&route->prefix)); | |
d62a17ae | 336 | } |
d62a17ae | 337 | } else { |
338 | if (IS_OSPF6_DEBUG_ABR | |
6f19bb0e | 339 | || IS_OSPF6_DEBUG_ORIGINATE(INTER_PREFIX)) |
d62a17ae | 340 | is_debug++; |
6f19bb0e CS |
341 | |
342 | if (route->type == OSPF6_DEST_TYPE_NETWORK && | |
343 | route->path.origin.type == | |
344 | htons(OSPF6_LSTYPE_INTER_PREFIX)) { | |
345 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) { | |
2dbe669b | 346 | if (is_debug) |
6f19bb0e | 347 | zlog_debug( |
2dbe669b | 348 | "%s: route %pFX with cost %u is not best, ignore.", |
72327cf3 | 349 | __func__, &route->prefix, |
6f19bb0e | 350 | route->path.cost); |
6f19bb0e CS |
351 | return 0; |
352 | } | |
353 | } | |
354 | ||
276aa265 CS |
355 | if (route->path.origin.type == |
356 | htons(OSPF6_LSTYPE_INTRA_PREFIX)) { | |
357 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) { | |
2dbe669b | 358 | if (is_debug) |
15569c58 | 359 | zlog_debug( |
2dbe669b DA |
360 | "%s: intra-prefix route %pFX with cost %u is not best, ignore.", |
361 | __func__, &route->prefix, | |
15569c58 | 362 | route->path.cost); |
276aa265 CS |
363 | return 0; |
364 | } | |
365 | } | |
366 | ||
2dbe669b DA |
367 | if (is_debug) |
368 | zlog_debug( | |
369 | "Originating summary in area %s for %pFX cost %u", | |
370 | area->name, &route->prefix, route->path.cost); | |
d62a17ae | 371 | } |
372 | ||
d62a17ae | 373 | /* if this route has just removed, remove corresponding LSA */ |
374 | if (CHECK_FLAG(route->flag, OSPF6_ROUTE_REMOVE)) { | |
375 | if (is_debug) | |
376 | zlog_debug( | |
377 | "The route has just removed, purge previous LSA"); | |
378 | ||
379 | if (route->type == OSPF6_DEST_TYPE_RANGE) { | |
380 | /* Whether the route have active longer prefix */ | |
381 | if (!CHECK_FLAG(route->flag, | |
382 | OSPF6_ROUTE_ACTIVE_SUMMARY)) { | |
383 | if (is_debug) | |
384 | zlog_debug( | |
385 | "The range is not active. withdraw"); | |
386 | ||
578e1c53 RW |
387 | ospf6_abr_delete_route(summary, summary_table, |
388 | old); | |
d62a17ae | 389 | } |
276aa265 | 390 | } else if (old) { |
e285b70d | 391 | ospf6_route_remove(summary, summary_table); |
d62a17ae | 392 | ospf6_lsa_purge(old); |
276aa265 | 393 | } |
d62a17ae | 394 | return 0; |
395 | } | |
396 | ||
c01326c6 | 397 | if ((route->type == OSPF6_DEST_TYPE_ROUTER) |
398 | && (IS_AREA_STUB(area) || IS_AREA_NSSA(area))) { | |
d62a17ae | 399 | if (is_debug) |
400 | zlog_debug( | |
401 | "Area has been stubbed, purge Inter-Router LSA"); | |
402 | ||
578e1c53 | 403 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 404 | return 0; |
405 | } | |
406 | ||
407 | if (area->no_summary | |
408 | && (route->path.subtype != OSPF6_PATH_SUBTYPE_DEFAULT_RT)) { | |
409 | if (is_debug) | |
410 | zlog_debug("Area has been stubbed, purge prefix LSA"); | |
411 | ||
578e1c53 | 412 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 413 | return 0; |
414 | } | |
415 | ||
416 | /* do not generate if the route cost is greater or equal to LSInfinity | |
417 | */ | |
418 | if (route->path.cost >= OSPF_LS_INFINITY) { | |
419 | /* When we're clearing the range route because all active | |
420 | * prefixes | |
421 | * under the range are gone, we set the range's cost to | |
422 | * OSPF_AREA_RANGE_COST_UNSPEC, which is > OSPF_LS_INFINITY. We | |
423 | * don't want to trigger the code here for that. This code is | |
424 | * for | |
425 | * handling routes that have gone to infinity. The range removal | |
426 | * happens | |
427 | * elsewhere. | |
428 | */ | |
429 | if ((route->type != OSPF6_DEST_TYPE_RANGE) | |
430 | && (route->path.cost != OSPF_AREA_RANGE_COST_UNSPEC)) { | |
431 | if (is_debug) | |
432 | zlog_debug( | |
433 | "The cost exceeds LSInfinity, withdraw"); | |
434 | if (old) | |
435 | ospf6_lsa_purge(old); | |
436 | return 0; | |
437 | } | |
438 | } | |
439 | ||
440 | /* if this is a route to ASBR */ | |
441 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
0437e105 | 442 | /* Only the preferred best path is considered */ |
d62a17ae | 443 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) { |
444 | if (is_debug) | |
445 | zlog_debug( | |
446 | "This is the secondary path to the ASBR, ignore"); | |
578e1c53 | 447 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 448 | return 0; |
449 | } | |
450 | ||
5a0e96e6 | 451 | /* Do not generate if area is NSSA */ |
452 | route_area = | |
453 | ospf6_area_lookup(route->path.area_id, area->ospf6); | |
e146082d | 454 | assert(route_area); |
455 | ||
5a0e96e6 | 456 | if (IS_AREA_NSSA(route_area)) { |
457 | if (is_debug) | |
458 | zlog_debug( | |
459 | "%s: The route comes from NSSA area, skip", | |
460 | __func__); | |
461 | ospf6_abr_delete_route(summary, summary_table, old); | |
462 | return 0; | |
463 | } | |
464 | ||
d62a17ae | 465 | /* Do not generate if the area is stub */ |
466 | /* XXX */ | |
467 | } | |
468 | ||
469 | /* if this is an intra-area route, this may be suppressed by aggregation | |
470 | */ | |
471 | if (route->type == OSPF6_DEST_TYPE_NETWORK | |
472 | && route->path.type == OSPF6_PATH_TYPE_INTRA) { | |
473 | /* search for configured address range for the route's area */ | |
474 | route_area = | |
475 | ospf6_area_lookup(route->path.area_id, area->ospf6); | |
476 | assert(route_area); | |
477 | range = ospf6_route_lookup_bestmatch(&route->prefix, | |
478 | route_area->range_table); | |
479 | ||
480 | /* ranges are ignored when originate backbone routes to transit | |
481 | area. | |
482 | Otherwise, if ranges are configured, the route is suppressed. | |
483 | */ | |
484 | if (range && !CHECK_FLAG(range->flag, OSPF6_ROUTE_REMOVE) | |
485 | && (route->path.area_id != OSPF_AREA_BACKBONE | |
486 | || !IS_AREA_TRANSIT(area))) { | |
2dbe669b DA |
487 | if (is_debug) |
488 | zlog_debug( | |
489 | "Suppressed by range %pFX of area %s", | |
490 | &range->prefix, route_area->name); | |
4ef96a70 XX |
491 | /* The existing summary route could be a range, don't |
492 | * remove it in this case | |
493 | */ | |
494 | if (summary && summary->type != OSPF6_DEST_TYPE_RANGE) | |
495 | ospf6_abr_delete_route(summary, summary_table, | |
496 | old); | |
d62a17ae | 497 | return 0; |
498 | } | |
499 | } | |
500 | ||
501 | /* If this is a configured address range */ | |
502 | if (route->type == OSPF6_DEST_TYPE_RANGE) { | |
503 | /* If DoNotAdvertise is set */ | |
504 | if (CHECK_FLAG(route->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE)) { | |
505 | if (is_debug) | |
506 | zlog_debug( | |
507 | "This is the range with DoNotAdvertise set. ignore"); | |
578e1c53 | 508 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 509 | return 0; |
510 | } | |
511 | ||
512 | /* If there are no active prefixes in this range, remove */ | |
513 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_ACTIVE_SUMMARY)) { | |
514 | if (is_debug) | |
515 | zlog_debug("The range is not active. withdraw"); | |
578e1c53 | 516 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 517 | return 0; |
518 | } | |
519 | } | |
520 | ||
d62a17ae | 521 | /* the route is going to be originated. store it in area's summary_table |
522 | */ | |
523 | if (summary == NULL) { | |
524 | summary = ospf6_route_copy(route); | |
525 | summary->path.origin.adv_router = area->ospf6->router_id; | |
526 | ||
527 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
528 | summary->path.origin.type = | |
529 | htons(OSPF6_LSTYPE_INTER_ROUTER); | |
530 | summary->path.origin.id = | |
531 | ADV_ROUTER_IN_PREFIX(&route->prefix); | |
532 | } else { | |
533 | summary->path.origin.type = | |
534 | htons(OSPF6_LSTYPE_INTER_PREFIX); | |
535 | summary->path.origin.id = ospf6_new_ls_id( | |
536 | summary->path.origin.type, | |
537 | summary->path.origin.adv_router, area->lsdb); | |
538 | } | |
e285b70d | 539 | summary = ospf6_route_add(summary, summary_table); |
d62a17ae | 540 | } else { |
541 | summary->type = route->type; | |
542 | monotime(&summary->changed); | |
c3c0ac83 | 543 | } |
d62a17ae | 544 | |
4699ad72 | 545 | summary->prefix_options = route->prefix_options; |
d62a17ae | 546 | summary->path.router_bits = route->path.router_bits; |
547 | summary->path.options[0] = route->path.options[0]; | |
548 | summary->path.options[1] = route->path.options[1]; | |
549 | summary->path.options[2] = route->path.options[2]; | |
d62a17ae | 550 | summary->path.area_id = area->area_id; |
551 | summary->path.type = OSPF6_PATH_TYPE_INTER; | |
552 | summary->path.subtype = route->path.subtype; | |
553 | summary->path.cost = route->path.cost; | |
554 | /* summary->nexthop[0] = route->nexthop[0]; */ | |
555 | ||
556 | /* prepare buffer */ | |
557 | memset(buffer, 0, sizeof(buffer)); | |
558 | lsa_header = (struct ospf6_lsa_header *)buffer; | |
559 | ||
560 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
561 | router_lsa = (struct ospf6_inter_router_lsa | |
562 | *)((caddr_t)lsa_header | |
563 | + sizeof(struct ospf6_lsa_header)); | |
564 | p = (caddr_t)router_lsa + sizeof(struct ospf6_inter_router_lsa); | |
565 | ||
566 | /* Fill Inter-Area-Router-LSA */ | |
567 | router_lsa->options[0] = route->path.options[0]; | |
568 | router_lsa->options[1] = route->path.options[1]; | |
569 | router_lsa->options[2] = route->path.options[2]; | |
570 | OSPF6_ABR_SUMMARY_METRIC_SET(router_lsa, route->path.cost); | |
571 | router_lsa->router_id = ADV_ROUTER_IN_PREFIX(&route->prefix); | |
572 | type = htons(OSPF6_LSTYPE_INTER_ROUTER); | |
573 | } else { | |
574 | prefix_lsa = (struct ospf6_inter_prefix_lsa | |
575 | *)((caddr_t)lsa_header | |
576 | + sizeof(struct ospf6_lsa_header)); | |
577 | p = (caddr_t)prefix_lsa + sizeof(struct ospf6_inter_prefix_lsa); | |
578 | ||
579 | /* Fill Inter-Area-Prefix-LSA */ | |
580 | OSPF6_ABR_SUMMARY_METRIC_SET(prefix_lsa, route->path.cost); | |
581 | prefix_lsa->prefix.prefix_length = route->prefix.prefixlen; | |
4699ad72 | 582 | prefix_lsa->prefix.prefix_options = route->prefix_options; |
d62a17ae | 583 | |
584 | /* set Prefix */ | |
585 | memcpy(p, &route->prefix.u.prefix6, | |
586 | OSPF6_PREFIX_SPACE(route->prefix.prefixlen)); | |
587 | ospf6_prefix_apply_mask(&prefix_lsa->prefix); | |
588 | p += OSPF6_PREFIX_SPACE(route->prefix.prefixlen); | |
589 | type = htons(OSPF6_LSTYPE_INTER_PREFIX); | |
c3c0ac83 | 590 | } |
d62a17ae | 591 | |
592 | /* Fill LSA Header */ | |
593 | lsa_header->age = 0; | |
594 | lsa_header->type = type; | |
595 | lsa_header->id = summary->path.origin.id; | |
596 | lsa_header->adv_router = area->ospf6->router_id; | |
597 | lsa_header->seqnum = | |
598 | ospf6_new_ls_seqnum(lsa_header->type, lsa_header->id, | |
599 | lsa_header->adv_router, area->lsdb); | |
600 | lsa_header->length = htons((caddr_t)p - (caddr_t)lsa_header); | |
601 | ||
602 | /* LSA checksum */ | |
603 | ospf6_lsa_checksum(lsa_header); | |
604 | ||
605 | /* create LSA */ | |
606 | lsa = ospf6_lsa_create(lsa_header); | |
607 | ||
ad500b22 K |
608 | /* Reset the unapproved flag */ |
609 | UNSET_FLAG(lsa->flag, OSPF6_LSA_UNAPPROVED); | |
610 | ||
d62a17ae | 611 | /* Originate */ |
612 | ospf6_lsa_originate_area(lsa, area); | |
613 | ||
ad500b22 K |
614 | if (IS_OSPF6_DEBUG_ABR) |
615 | zlog_debug("%s : finish area %s", __func__, area->name); | |
616 | ||
d62a17ae | 617 | return 1; |
6452df09 | 618 | } |
619 | ||
d62a17ae | 620 | void ospf6_abr_range_reset_cost(struct ospf6 *ospf6) |
ca1f4309 | 621 | { |
d62a17ae | 622 | struct listnode *node, *nnode; |
623 | struct ospf6_area *oa; | |
624 | struct ospf6_route *range; | |
625 | ||
3c77bc80 | 626 | for (ALL_LIST_ELEMENTS(ospf6->area_list, node, nnode, oa)) { |
d62a17ae | 627 | for (range = ospf6_route_head(oa->range_table); range; |
628 | range = ospf6_route_next(range)) | |
629 | OSPF6_ABR_RANGE_CLEAR_COST(range); | |
3c77bc80 RW |
630 | for (range = ospf6_route_head(oa->nssa_range_table); range; |
631 | range = ospf6_route_next(range)) | |
632 | OSPF6_ABR_RANGE_CLEAR_COST(range); | |
633 | } | |
ca1f4309 DS |
634 | } |
635 | ||
d7c0a89a QY |
636 | static inline uint32_t ospf6_abr_range_compute_cost(struct ospf6_route *range, |
637 | struct ospf6 *o) | |
6452df09 | 638 | { |
d62a17ae | 639 | struct ospf6_route *ro; |
d7c0a89a | 640 | uint32_t cost = 0; |
d62a17ae | 641 | |
642 | for (ro = ospf6_route_match_head(&range->prefix, o->route_table); ro; | |
643 | ro = ospf6_route_match_next(&range->prefix, ro)) { | |
3c77bc80 RW |
644 | if (CHECK_FLAG(ro->flag, OSPF6_ROUTE_REMOVE)) |
645 | continue; | |
646 | if (ro->path.area_id != range->path.area_id) | |
647 | continue; | |
648 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_NSSA_RANGE) | |
649 | && ro->path.type != OSPF6_PATH_TYPE_EXTERNAL1 | |
650 | && ro->path.type != OSPF6_PATH_TYPE_EXTERNAL2) | |
651 | continue; | |
652 | if (!CHECK_FLAG(range->flag, OSPF6_ROUTE_NSSA_RANGE) | |
653 | && ro->path.type != OSPF6_PATH_TYPE_INTRA) | |
654 | continue; | |
655 | ||
656 | cost = MAX(cost, ro->path.cost); | |
d62a17ae | 657 | } |
658 | ||
659 | return cost; | |
ca1f4309 DS |
660 | } |
661 | ||
662 | static inline int | |
d7c0a89a | 663 | ospf6_abr_range_summary_needs_update(struct ospf6_route *range, uint32_t cost) |
ca1f4309 | 664 | { |
d62a17ae | 665 | int redo_summary = 0; |
666 | ||
667 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_REMOVE)) { | |
668 | UNSET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
669 | redo_summary = 1; | |
670 | } else if (CHECK_FLAG(range->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE)) { | |
671 | if (range->path.cost != 0) { | |
672 | range->path.cost = 0; | |
673 | redo_summary = 1; | |
674 | } | |
675 | } else if (cost) { | |
676 | if ((OSPF6_PATH_COST_IS_CONFIGURED(range->path) | |
677 | && range->path.cost != range->path.u.cost_config)) { | |
678 | range->path.cost = range->path.u.cost_config; | |
679 | SET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
680 | redo_summary = 1; | |
681 | } else if (!OSPF6_PATH_COST_IS_CONFIGURED(range->path) | |
682 | && range->path.cost != cost) { | |
683 | range->path.cost = cost; | |
684 | SET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
685 | redo_summary = 1; | |
686 | } | |
687 | } else if (CHECK_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY)) { | |
688 | /* Cost is zero, meaning no active range */ | |
689 | UNSET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
690 | range->path.cost = OSPF_AREA_RANGE_COST_UNSPEC; | |
691 | redo_summary = 1; | |
c3c0ac83 | 692 | } |
d62a17ae | 693 | |
694 | return (redo_summary); | |
ca1f4309 DS |
695 | } |
696 | ||
ad500b22 | 697 | void ospf6_abr_range_update(struct ospf6_route *range, struct ospf6 *ospf6) |
ca1f4309 | 698 | { |
d7c0a89a | 699 | uint32_t cost = 0; |
d62a17ae | 700 | struct listnode *node, *nnode; |
701 | struct ospf6_area *oa; | |
702 | int summary_orig = 0; | |
703 | ||
704 | assert(range->type == OSPF6_DEST_TYPE_RANGE); | |
3c77bc80 RW |
705 | oa = ospf6_area_lookup(range->path.area_id, ospf6); |
706 | assert(oa); | |
d62a17ae | 707 | |
708 | /* update range's cost and active flag */ | |
709 | cost = ospf6_abr_range_compute_cost(range, ospf6); | |
710 | ||
ad500b22 K |
711 | if (IS_OSPF6_DEBUG_ABR) |
712 | zlog_debug("%s: range %pFX, cost %d", __func__, &range->prefix, | |
713 | cost); | |
714 | ||
d62a17ae | 715 | /* Non-zero cost is a proxy for active longer prefixes in this range. |
716 | * If there are active routes covered by this range AND either the | |
717 | * configured | |
718 | * cost has changed or the summarized cost has changed then redo | |
719 | * summaries. | |
720 | * Alternately, if there are no longer active prefixes and there are | |
721 | * summary announcements, withdraw those announcements. | |
722 | * | |
723 | * The don't advertise code relies on the path.cost being set to UNSPEC | |
724 | * to | |
725 | * work the first time. Subsequent times the path.cost is not 0 anyway | |
726 | * if there | |
727 | * were active ranges. | |
728 | */ | |
8ee9d58b RW |
729 | if (!ospf6_abr_range_summary_needs_update(range, cost)) |
730 | return; | |
d62a17ae | 731 | |
8ee9d58b RW |
732 | if (IS_OSPF6_DEBUG_ABR) |
733 | zlog_debug("%s: range %pFX update", __func__, &range->prefix); | |
734 | ||
3c77bc80 RW |
735 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_NSSA_RANGE)) { |
736 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY) | |
737 | && !CHECK_FLAG(range->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE)) { | |
738 | ospf6_nssa_lsa_originate(range, oa, true); | |
739 | summary_orig = 1; | |
740 | } else { | |
741 | struct ospf6_lsa *lsa; | |
742 | ||
743 | lsa = ospf6_lsdb_lookup(range->path.origin.type, | |
744 | range->path.origin.id, | |
745 | ospf6->router_id, oa->lsdb); | |
746 | if (lsa) | |
747 | ospf6_lsa_premature_aging(lsa); | |
748 | } | |
749 | } else { | |
750 | for (ALL_LIST_ELEMENTS(ospf6->area_list, node, nnode, oa)) { | |
d62a17ae | 751 | summary_orig += |
752 | ospf6_abr_originate_summary_to_area(range, oa); | |
3c77bc80 RW |
753 | } |
754 | } | |
d62a17ae | 755 | |
8ee9d58b RW |
756 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY) |
757 | && summary_orig) { | |
758 | if (!CHECK_FLAG(range->flag, OSPF6_ROUTE_BLACKHOLE_ADDED)) { | |
759 | if (IS_OSPF6_DEBUG_ABR) | |
760 | zlog_debug("Add discard route"); | |
d62a17ae | 761 | |
8ee9d58b RW |
762 | ospf6_zebra_add_discard(range, ospf6); |
763 | } | |
764 | } else { | |
765 | /* Summary removed or no summary generated as no | |
766 | * specifics exist */ | |
767 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_BLACKHOLE_ADDED)) { | |
768 | if (IS_OSPF6_DEBUG_ABR) | |
769 | zlog_debug("Delete discard route"); | |
770 | ||
771 | ospf6_zebra_delete_discard(range, ospf6); | |
d62a17ae | 772 | } |
c3c0ac83 | 773 | } |
049207c3 | 774 | } |
775 | ||
beadc736 | 776 | void ospf6_abr_originate_summary(struct ospf6_route *route, struct ospf6 *ospf6) |
049207c3 | 777 | { |
d62a17ae | 778 | struct listnode *node, *nnode; |
779 | struct ospf6_area *oa; | |
780 | struct ospf6_route *range = NULL; | |
781 | ||
9142948e RW |
782 | if (IS_OSPF6_DEBUG_ABR) { |
783 | char buf[BUFSIZ]; | |
784 | ||
785 | if (route->type == OSPF6_DEST_TYPE_ROUTER) | |
786 | inet_ntop(AF_INET, | |
787 | &ADV_ROUTER_IN_PREFIX(&route->prefix), buf, | |
788 | sizeof(buf)); | |
789 | else | |
790 | prefix2str(&route->prefix, buf, sizeof(buf)); | |
791 | ||
792 | zlog_debug("%s: route %s", __func__, buf); | |
793 | } | |
beadc736 | 794 | |
d62a17ae | 795 | if (route->type == OSPF6_DEST_TYPE_NETWORK) { |
796 | oa = ospf6_area_lookup(route->path.area_id, ospf6); | |
48725111 | 797 | if (!oa) { |
798 | zlog_err("OSPFv6 area lookup failed"); | |
799 | return; | |
800 | } | |
801 | ||
d62a17ae | 802 | range = ospf6_route_lookup_bestmatch(&route->prefix, |
803 | oa->range_table); | |
804 | if (range) { | |
beadc736 | 805 | ospf6_abr_range_update(range, ospf6); |
d62a17ae | 806 | } |
c3c0ac83 | 807 | } |
6452df09 | 808 | |
d62a17ae | 809 | for (ALL_LIST_ELEMENTS(ospf6->area_list, node, nnode, oa)) |
810 | ospf6_abr_originate_summary_to_area(route, oa); | |
049207c3 | 811 | } |
812 | ||
d62a17ae | 813 | void ospf6_abr_defaults_to_stub(struct ospf6 *o) |
ca1f4309 | 814 | { |
d62a17ae | 815 | struct listnode *node, *nnode; |
816 | struct ospf6_area *oa; | |
817 | struct ospf6_route *def, *route; | |
c4122b55 | 818 | int type = DEFAULT_ROUTE; |
d62a17ae | 819 | |
820 | if (!o->backbone) | |
821 | return; | |
5f6635b9 | 822 | |
22813fdb | 823 | def = ospf6_route_create(o); |
d62a17ae | 824 | def->type = OSPF6_DEST_TYPE_NETWORK; |
825 | def->prefix.family = AF_INET6; | |
826 | def->prefix.prefixlen = 0; | |
827 | memset(&def->prefix.u.prefix6, 0, sizeof(struct in6_addr)); | |
828 | def->type = OSPF6_DEST_TYPE_NETWORK; | |
829 | def->path.type = OSPF6_PATH_TYPE_INTER; | |
830 | def->path.subtype = OSPF6_PATH_SUBTYPE_DEFAULT_RT; | |
831 | def->path.area_id = o->backbone->area_id; | |
c4122b55 YR |
832 | def->path.metric_type = metric_type(o, type, 0); |
833 | def->path.cost = metric_value(o, type, 0); | |
d62a17ae | 834 | |
beadc736 | 835 | for (ALL_LIST_ELEMENTS(o->area_list, node, nnode, oa)) { |
8a60820f RW |
836 | if (IS_AREA_STUB(oa) || (IS_AREA_NSSA(oa) && oa->no_summary)) { |
837 | /* announce defaults to stubby areas */ | |
838 | if (IS_OSPF6_DEBUG_ABR) | |
839 | zlog_debug( | |
840 | "Announcing default route into stubby area %s", | |
841 | oa->name); | |
842 | UNSET_FLAG(def->flag, OSPF6_ROUTE_REMOVE); | |
843 | ospf6_abr_originate_summary_to_area(def, oa); | |
844 | } else { | |
d62a17ae | 845 | /* withdraw defaults when an area switches from stub to |
846 | * non-stub */ | |
847 | route = ospf6_route_lookup(&def->prefix, | |
848 | oa->summary_prefix); | |
849 | if (route | |
850 | && (route->path.subtype == def->path.subtype)) { | |
851 | if (IS_OSPF6_DEBUG_ABR) | |
852 | zlog_debug( | |
853 | "Withdrawing default route from non-stubby area %s", | |
854 | oa->name); | |
855 | SET_FLAG(def->flag, OSPF6_ROUTE_REMOVE); | |
856 | ospf6_abr_originate_summary_to_area(def, oa); | |
857 | } | |
d62a17ae | 858 | } |
ca1f4309 | 859 | } |
d62a17ae | 860 | ospf6_route_delete(def); |
ca1f4309 DS |
861 | } |
862 | ||
6f19bb0e CS |
863 | void ospf6_abr_old_path_update(struct ospf6_route *old_route, |
864 | struct ospf6_route *route, | |
e285b70d | 865 | struct ospf6_route_table *table) |
6f19bb0e CS |
866 | { |
867 | struct ospf6_path *o_path = NULL; | |
868 | struct listnode *anode, *anext; | |
869 | struct listnode *nnode, *rnode, *rnext; | |
870 | struct ospf6_nexthop *nh, *rnh; | |
871 | ||
872 | for (ALL_LIST_ELEMENTS(old_route->paths, anode, anext, o_path)) { | |
bc465fb6 MN |
873 | if (o_path->area_id != route->path.area_id |
874 | || !ospf6_ls_origin_same(o_path, &route->path)) | |
6f19bb0e CS |
875 | continue; |
876 | ||
877 | if ((o_path->cost == route->path.cost) && | |
878 | (o_path->u.cost_e2 == route->path.u.cost_e2)) | |
879 | continue; | |
880 | ||
881 | for (ALL_LIST_ELEMENTS_RO(o_path->nh_list, nnode, nh)) { | |
882 | for (ALL_LIST_ELEMENTS(old_route->nh_list, rnode, | |
883 | rnext, rnh)) { | |
884 | if (!ospf6_nexthop_is_same(rnh, nh)) | |
885 | continue; | |
886 | listnode_delete(old_route->nh_list, rnh); | |
887 | ospf6_nexthop_delete(rnh); | |
888 | } | |
889 | ||
890 | } | |
891 | ||
892 | listnode_delete(old_route->paths, o_path); | |
893 | ospf6_path_free(o_path); | |
894 | ||
895 | for (ALL_LIST_ELEMENTS(old_route->paths, anode, | |
896 | anext, o_path)) { | |
897 | ospf6_merge_nexthops(old_route->nh_list, | |
898 | o_path->nh_list); | |
899 | } | |
900 | ||
901 | if (IS_OSPF6_DEBUG_ABR || IS_OSPF6_DEBUG_EXAMIN(INTER_PREFIX)) | |
5e81f5dd DS |
902 | zlog_debug("%s: paths %u nh %u", __func__, |
903 | old_route->paths | |
904 | ? listcount(old_route->paths) | |
905 | : 0, | |
906 | old_route->nh_list | |
907 | ? listcount(old_route->nh_list) | |
908 | : 0); | |
6f19bb0e CS |
909 | |
910 | if (table->hook_add) | |
e285b70d | 911 | (*table->hook_add)(old_route); |
6f19bb0e CS |
912 | |
913 | if (old_route->path.origin.id == route->path.origin.id && | |
914 | old_route->path.origin.adv_router == | |
915 | route->path.origin.adv_router) { | |
916 | struct ospf6_path *h_path; | |
917 | ||
918 | h_path = (struct ospf6_path *) | |
919 | listgetdata(listhead(old_route->paths)); | |
920 | old_route->path.origin.type = h_path->origin.type; | |
921 | old_route->path.origin.id = h_path->origin.id; | |
922 | old_route->path.origin.adv_router = | |
923 | h_path->origin.adv_router; | |
924 | } | |
925 | } | |
926 | } | |
927 | ||
beadc736 | 928 | void ospf6_abr_old_route_remove(struct ospf6_lsa *lsa, struct ospf6_route *old, |
e285b70d | 929 | struct ospf6_route_table *table) |
6f19bb0e | 930 | { |
b9b87bfc S |
931 | if (IS_OSPF6_DEBUG_ABR) |
932 | zlog_debug("%s: route %pFX, paths %d", __func__, &old->prefix, | |
933 | listcount(old->paths)); | |
934 | ||
6f19bb0e CS |
935 | if (listcount(old->paths) > 1) { |
936 | struct listnode *anode, *anext, *nnode, *rnode, *rnext; | |
937 | struct ospf6_path *o_path; | |
938 | struct ospf6_nexthop *nh, *rnh; | |
939 | bool nh_updated = false; | |
6f19bb0e CS |
940 | |
941 | for (ALL_LIST_ELEMENTS(old->paths, anode, anext, o_path)) { | |
942 | if (o_path->origin.adv_router != lsa->header->adv_router | |
b9b87bfc | 943 | || o_path->origin.id != lsa->header->id) |
6f19bb0e CS |
944 | continue; |
945 | for (ALL_LIST_ELEMENTS_RO(o_path->nh_list, nnode, nh)) { | |
946 | for (ALL_LIST_ELEMENTS(old->nh_list, | |
947 | rnode, rnext, rnh)) { | |
948 | if (!ospf6_nexthop_is_same(rnh, nh)) | |
949 | continue; | |
b9b87bfc S |
950 | if (IS_OSPF6_DEBUG_ABR) |
951 | zlog_debug("deleted nexthop"); | |
6f19bb0e CS |
952 | listnode_delete(old->nh_list, rnh); |
953 | ospf6_nexthop_delete(rnh); | |
954 | } | |
955 | } | |
956 | listnode_delete(old->paths, o_path); | |
957 | ospf6_path_free(o_path); | |
958 | nh_updated = true; | |
959 | } | |
960 | ||
961 | if (nh_updated) { | |
962 | if (listcount(old->paths)) { | |
2dbe669b DA |
963 | if (IS_OSPF6_DEBUG_ABR |
964 | || IS_OSPF6_DEBUG_EXAMIN(INTER_PREFIX)) | |
965 | zlog_debug("%s: old %pFX updated nh %u", | |
966 | __func__, &old->prefix, | |
5e81f5dd DS |
967 | old->nh_list ? listcount( |
968 | old->nh_list) | |
969 | : 0); | |
6f19bb0e CS |
970 | |
971 | if (table->hook_add) | |
e285b70d | 972 | (*table->hook_add)(old); |
6f19bb0e CS |
973 | |
974 | if ((old->path.origin.id == lsa->header->id) && | |
975 | (old->path.origin.adv_router | |
976 | == lsa->header->adv_router)) { | |
977 | struct ospf6_path *h_path; | |
978 | ||
979 | h_path = (struct ospf6_path *) | |
980 | listgetdata( | |
981 | listhead(old->paths)); | |
982 | old->path.origin.type = | |
983 | h_path->origin.type; | |
984 | old->path.origin.id = h_path->origin.id; | |
985 | old->path.origin.adv_router = | |
986 | h_path->origin.adv_router; | |
987 | } | |
988 | } else | |
e285b70d | 989 | ospf6_route_remove(old, table); |
6f19bb0e CS |
990 | } |
991 | } else | |
e285b70d | 992 | ospf6_route_remove(old, table); |
6f19bb0e CS |
993 | } |
994 | ||
049207c3 | 995 | /* RFC 2328 16.2. Calculating the inter-area routes */ |
d62a17ae | 996 | void ospf6_abr_examin_summary(struct ospf6_lsa *lsa, struct ospf6_area *oa) |
049207c3 | 997 | { |
d62a17ae | 998 | struct prefix prefix, abr_prefix; |
999 | struct ospf6_route_table *table = NULL; | |
99ab28cb | 1000 | struct ospf6_route *range, *route, *old = NULL, *old_route; |
d62a17ae | 1001 | struct ospf6_route *abr_entry; |
d7c0a89a | 1002 | uint8_t type = 0; |
d62a17ae | 1003 | char options[3] = {0, 0, 0}; |
d7c0a89a QY |
1004 | uint8_t prefix_options = 0; |
1005 | uint32_t cost = 0; | |
1006 | uint8_t router_bits = 0; | |
d62a17ae | 1007 | char buf[PREFIX2STR_BUFFER]; |
1008 | int is_debug = 0; | |
1009 | struct ospf6_inter_prefix_lsa *prefix_lsa = NULL; | |
1010 | struct ospf6_inter_router_lsa *router_lsa = NULL; | |
99ab28cb | 1011 | bool old_entry_updated = false; |
6f19bb0e CS |
1012 | struct ospf6_path *path, *o_path, *ecmp_path; |
1013 | struct listnode *anode; | |
b9b87bfc | 1014 | bool add_route = false; |
d62a17ae | 1015 | |
1016 | memset(&prefix, 0, sizeof(prefix)); | |
1017 | ||
1018 | if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_PREFIX)) { | |
1019 | if (IS_OSPF6_DEBUG_EXAMIN(INTER_PREFIX)) { | |
1020 | is_debug++; | |
b9b87bfc S |
1021 | zlog_debug("%s: LSA %s age %d in area %s", __func__, |
1022 | lsa->name, ospf6_lsa_age_current(lsa), | |
1023 | oa->name); | |
d62a17ae | 1024 | } |
1025 | ||
1026 | prefix_lsa = | |
1027 | (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( | |
1028 | lsa->header); | |
1029 | prefix.family = AF_INET6; | |
1030 | prefix.prefixlen = prefix_lsa->prefix.prefix_length; | |
b8ce0c36 | 1031 | ospf6_prefix_in6_addr(&prefix.u.prefix6, prefix_lsa, |
1032 | &prefix_lsa->prefix); | |
d62a17ae | 1033 | if (is_debug) |
1034 | prefix2str(&prefix, buf, sizeof(buf)); | |
1035 | table = oa->ospf6->route_table; | |
1036 | type = OSPF6_DEST_TYPE_NETWORK; | |
1037 | prefix_options = prefix_lsa->prefix.prefix_options; | |
1038 | cost = OSPF6_ABR_SUMMARY_METRIC(prefix_lsa); | |
1039 | } else if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_ROUTER)) { | |
1040 | if (IS_OSPF6_DEBUG_EXAMIN(INTER_ROUTER)) { | |
1041 | is_debug++; | |
b9b87bfc S |
1042 | zlog_debug("%s: LSA %s age %d in area %s", __func__, |
1043 | lsa->name, ospf6_lsa_age_current(lsa), | |
1044 | oa->name); | |
d62a17ae | 1045 | } |
1046 | ||
1047 | router_lsa = | |
1048 | (struct ospf6_inter_router_lsa *)OSPF6_LSA_HEADER_END( | |
1049 | lsa->header); | |
1050 | ospf6_linkstate_prefix(router_lsa->router_id, htonl(0), | |
1051 | &prefix); | |
1052 | if (is_debug) | |
1053 | inet_ntop(AF_INET, &router_lsa->router_id, buf, | |
1054 | sizeof(buf)); | |
1055 | ||
1056 | table = oa->ospf6->brouter_table; | |
1057 | type = OSPF6_DEST_TYPE_ROUTER; | |
1058 | options[0] = router_lsa->options[0]; | |
1059 | options[1] = router_lsa->options[1]; | |
1060 | options[2] = router_lsa->options[2]; | |
1061 | cost = OSPF6_ABR_SUMMARY_METRIC(router_lsa); | |
1062 | SET_FLAG(router_bits, OSPF6_ROUTER_BIT_E); | |
1063 | } else | |
1064 | assert(0); | |
1065 | ||
1066 | /* Find existing route */ | |
1067 | route = ospf6_route_lookup(&prefix, table); | |
b9b87bfc | 1068 | if (route) { |
d62a17ae | 1069 | ospf6_route_lock(route); |
b9b87bfc S |
1070 | if (is_debug) |
1071 | zlog_debug("%s: route %pFX, paths %d", __func__, | |
1072 | &prefix, listcount(route->paths)); | |
1073 | } | |
d62a17ae | 1074 | while (route && ospf6_route_is_prefix(&prefix, route)) { |
1075 | if (route->path.area_id == oa->area_id | |
1076 | && route->path.origin.type == lsa->header->type | |
6f19bb0e CS |
1077 | && !CHECK_FLAG(route->flag, OSPF6_ROUTE_WAS_REMOVED)) { |
1078 | /* LSA adv. router could be part of route's | |
1079 | * paths list. Find the existing path and set | |
1080 | * old as the route. | |
1081 | */ | |
1082 | if (listcount(route->paths) > 1) { | |
6f19bb0e CS |
1083 | for (ALL_LIST_ELEMENTS_RO(route->paths, anode, |
1084 | o_path)) { | |
6f19bb0e CS |
1085 | if (o_path->origin.id == lsa->header->id |
1086 | && o_path->origin.adv_router == | |
1087 | lsa->header->adv_router) { | |
1088 | old = route; | |
1089 | ||
1090 | if (is_debug) | |
5e81f5dd | 1091 | zlog_debug( |
dc138868 | 1092 | "%s: old entry found in paths, adv_router %pI4", |
5e81f5dd | 1093 | __func__, |
dc138868 | 1094 | &o_path->origin.adv_router); |
6f19bb0e CS |
1095 | |
1096 | break; | |
1097 | } | |
1098 | } | |
1099 | } else if (route->path.origin.id == lsa->header->id && | |
1100 | route->path.origin.adv_router == | |
1101 | lsa->header->adv_router) | |
1102 | old = route; | |
1103 | } | |
d62a17ae | 1104 | route = ospf6_route_next(route); |
1105 | } | |
1106 | if (route) | |
1107 | ospf6_route_unlock(route); | |
1108 | ||
1109 | /* (1) if cost == LSInfinity or if the LSA is MaxAge */ | |
1110 | if (cost == OSPF_LS_INFINITY) { | |
1111 | if (is_debug) | |
1112 | zlog_debug("cost is LS_INFINITY, ignore"); | |
1113 | if (old) | |
e285b70d | 1114 | ospf6_abr_old_route_remove(lsa, old, table); |
d62a17ae | 1115 | return; |
1116 | } | |
1117 | if (OSPF6_LSA_IS_MAXAGE(lsa)) { | |
1118 | if (is_debug) | |
5e81f5dd DS |
1119 | zlog_debug("%s: LSA %s is MaxAge, ignore", __func__, |
1120 | lsa->name); | |
d62a17ae | 1121 | if (old) |
e285b70d | 1122 | ospf6_abr_old_route_remove(lsa, old, table); |
d62a17ae | 1123 | return; |
1124 | } | |
1125 | ||
b9b87bfc | 1126 | |
d62a17ae | 1127 | /* (2) if the LSA is self-originated, ignore */ |
1128 | if (lsa->header->adv_router == oa->ospf6->router_id) { | |
1129 | if (is_debug) | |
6f19bb0e CS |
1130 | zlog_debug("LSA %s is self-originated, ignore", |
1131 | lsa->name); | |
d62a17ae | 1132 | if (old) |
e285b70d | 1133 | ospf6_route_remove(old, table); |
d62a17ae | 1134 | return; |
01879114 | 1135 | } |
d62a17ae | 1136 | |
1137 | /* (3) if the prefix is equal to an active configured address range */ | |
1138 | /* or if the NU bit is set in the prefix */ | |
1139 | if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_PREFIX)) { | |
8934b81c QY |
1140 | /* must have been set in previous block */ |
1141 | assert(prefix_lsa); | |
1142 | ||
d62a17ae | 1143 | range = ospf6_route_lookup(&prefix, oa->range_table); |
1144 | if (range) { | |
1145 | if (is_debug) | |
1146 | zlog_debug( | |
1147 | "Prefix is equal to address range, ignore"); | |
1148 | if (old) | |
e285b70d | 1149 | ospf6_route_remove(old, table); |
d62a17ae | 1150 | return; |
1151 | } | |
1152 | ||
1153 | if (CHECK_FLAG(prefix_lsa->prefix.prefix_options, | |
1154 | OSPF6_PREFIX_OPTION_NU) | |
1155 | || CHECK_FLAG(prefix_lsa->prefix.prefix_options, | |
1156 | OSPF6_PREFIX_OPTION_LA)) { | |
1157 | if (is_debug) | |
1158 | zlog_debug("Prefix has NU/LA bit set, ignore"); | |
1159 | if (old) | |
e285b70d | 1160 | ospf6_route_remove(old, table); |
d62a17ae | 1161 | return; |
1162 | } | |
01879114 | 1163 | } |
d62a17ae | 1164 | |
1165 | if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_ROUTER)) { | |
1166 | /* To pass test suites */ | |
554bfe88 | 1167 | assert(router_lsa); |
d62a17ae | 1168 | if (!OSPF6_OPT_ISSET(router_lsa->options, OSPF6_OPT_R) |
1169 | || !OSPF6_OPT_ISSET(router_lsa->options, OSPF6_OPT_V6)) { | |
1170 | if (is_debug) | |
1171 | zlog_debug("Prefix has NU/LA bit set, ignore"); | |
1172 | if (old) | |
e285b70d | 1173 | ospf6_route_remove(old, table); |
d62a17ae | 1174 | |
1175 | return; | |
1176 | } | |
1177 | /* Avoid infinite recursion if someone has maliciously announced | |
1178 | an | |
1179 | Inter-Router LSA for an ABR | |
1180 | */ | |
1181 | if (lsa->header->adv_router == router_lsa->router_id) { | |
1182 | if (is_debug) | |
1183 | zlog_debug( | |
416721d9 | 1184 | "Ignoring Inter-Router LSA for an ABR (%s)", |
d62a17ae | 1185 | buf); |
1186 | if (old) | |
e285b70d | 1187 | ospf6_route_remove(old, table); |
d62a17ae | 1188 | |
1189 | return; | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | /* (4) if the routing table entry for the ABR does not exist */ | |
1194 | ospf6_linkstate_prefix(lsa->header->adv_router, htonl(0), &abr_prefix); | |
1195 | abr_entry = ospf6_route_lookup(&abr_prefix, oa->ospf6->brouter_table); | |
1196 | if (abr_entry == NULL || abr_entry->path.area_id != oa->area_id | |
1197 | || CHECK_FLAG(abr_entry->flag, OSPF6_ROUTE_REMOVE) | |
1198 | || !CHECK_FLAG(abr_entry->path.router_bits, OSPF6_ROUTER_BIT_B)) { | |
1199 | if (is_debug) | |
5e81f5dd | 1200 | zlog_debug( |
b9b87bfc S |
1201 | "%s: ABR router entry %pFX does not exist, ignore", |
1202 | __func__, &abr_prefix); | |
a2d0055a CS |
1203 | if (old) { |
1204 | if (old->type == OSPF6_DEST_TYPE_ROUTER && | |
1205 | oa->intra_brouter_calc) { | |
1206 | if (is_debug) | |
1207 | zlog_debug( | |
5e81f5dd DS |
1208 | "%s: intra_brouter_calc is on, skip brouter remove: %s (%p)", |
1209 | __func__, buf, (void *)old); | |
a2d0055a CS |
1210 | } else { |
1211 | if (is_debug) | |
5e81f5dd DS |
1212 | zlog_debug( |
1213 | "%s: remove old entry: %s %p ", | |
1214 | __func__, buf, (void *)old); | |
b9b87bfc | 1215 | ospf6_abr_old_route_remove(lsa, old, table); |
a2d0055a CS |
1216 | } |
1217 | } | |
d62a17ae | 1218 | return; |
1219 | } | |
1220 | ||
d62a17ae | 1221 | /* (5),(6): the path preference is handled by the sorting |
1222 | in the routing table. Always install the path by substituting | |
1223 | old route (if any). */ | |
22813fdb | 1224 | route = ospf6_route_create(oa->ospf6); |
d62a17ae | 1225 | |
1226 | route->type = type; | |
1227 | route->prefix = prefix; | |
4699ad72 | 1228 | route->prefix_options = prefix_options; |
d62a17ae | 1229 | route->path.origin.type = lsa->header->type; |
1230 | route->path.origin.id = lsa->header->id; | |
1231 | route->path.origin.adv_router = lsa->header->adv_router; | |
1232 | route->path.router_bits = router_bits; | |
1233 | route->path.options[0] = options[0]; | |
1234 | route->path.options[1] = options[1]; | |
1235 | route->path.options[2] = options[2]; | |
d62a17ae | 1236 | route->path.area_id = oa->area_id; |
1237 | route->path.type = OSPF6_PATH_TYPE_INTER; | |
1238 | route->path.cost = abr_entry->path.cost + cost; | |
1239 | ||
6f19bb0e CS |
1240 | /* copy brouter rechable nexthops into the route. */ |
1241 | ospf6_route_copy_nexthops(route, abr_entry); | |
064d4355 | 1242 | |
d62a17ae | 1243 | /* (7) If the routes are identical, copy the next hops over to existing |
1244 | route. ospf6's route table implementation will otherwise string both | |
1245 | routes, but keep the older one as the best route since the routes | |
1246 | are identical. | |
1247 | */ | |
1248 | old = ospf6_route_lookup(&prefix, table); | |
b9b87bfc S |
1249 | if (old) { |
1250 | if (is_debug) | |
1251 | zlog_debug("%s: found old route %pFX, paths %d", | |
1252 | __func__, &prefix, listcount(old->paths)); | |
1253 | } | |
99ab28cb | 1254 | for (old_route = old; old_route; old_route = old_route->next) { |
0c7f982a PR |
1255 | |
1256 | /* The route linked-list is grouped in batches of prefix. | |
1257 | * If the new prefix is not the same as the one of interest | |
1258 | * then we have walked over the end of the batch and so we | |
1259 | * should break rather than continuing unnecessarily. | |
1260 | */ | |
1261 | if (!ospf6_route_is_same(old_route, route)) | |
1262 | break; | |
1263 | if ((old_route->type != route->type) | |
1264 | || (old_route->path.type != route->path.type)) | |
99ab28cb | 1265 | continue; |
064d4355 | 1266 | |
99ab28cb | 1267 | if ((ospf6_route_cmp(route, old_route) != 0)) { |
2dbe669b | 1268 | if (is_debug) |
5e81f5dd | 1269 | zlog_debug( |
2dbe669b DA |
1270 | "%s: old %p %pFX cost %u new route cost %u are not same", |
1271 | __func__, (void *)old_route, &prefix, | |
5e81f5dd | 1272 | old_route->path.cost, route->path.cost); |
6f19bb0e CS |
1273 | |
1274 | /* Check new route's adv. router is same in one of | |
1275 | * the paths with differed cost, if so remove the | |
1276 | * old path as later new route will be added. | |
1277 | */ | |
1278 | if (listcount(old_route->paths) > 1) | |
1279 | ospf6_abr_old_path_update(old_route, route, | |
e285b70d | 1280 | table); |
99ab28cb CS |
1281 | continue; |
1282 | } | |
1283 | ||
b74e9651 MB |
1284 | list_delete_all_node(old_route->nh_list); |
1285 | ospf6_route_copy_nexthops(old_route, route); | |
99ab28cb | 1286 | old_entry_updated = true; |
6f19bb0e CS |
1287 | |
1288 | for (ALL_LIST_ELEMENTS_RO(old_route->paths, anode, | |
1289 | o_path)) { | |
bc465fb6 MN |
1290 | if (o_path->area_id == route->path.area_id |
1291 | && ospf6_ls_origin_same(o_path, &route->path)) | |
6f19bb0e CS |
1292 | break; |
1293 | } | |
1294 | ||
1295 | /* New adv. router for a existing path add to paths list */ | |
1296 | if (o_path == NULL) { | |
1297 | ecmp_path = ospf6_path_dup(&route->path); | |
1298 | ||
1299 | /* Add a nh_list to new ecmp path */ | |
1300 | ospf6_copy_nexthops(ecmp_path->nh_list, route->nh_list); | |
1301 | ||
1302 | /* Add the new path to route's path list */ | |
1303 | listnode_add_sort(old_route->paths, ecmp_path); | |
1304 | ||
1305 | if (is_debug) { | |
5e81f5dd | 1306 | zlog_debug( |
dc138868 DL |
1307 | "%s: route %pFX cost %u another path %pI4 added with nh %u, effective paths %u nh %u", |
1308 | __func__, &route->prefix, | |
1309 | old_route->path.cost, | |
1310 | &ecmp_path->origin.adv_router, | |
5e81f5dd DS |
1311 | listcount(ecmp_path->nh_list), |
1312 | old_route->paths | |
1313 | ? listcount(old_route->paths) | |
1314 | : 0, | |
1315 | listcount(old_route->nh_list)); | |
6f19bb0e CS |
1316 | } |
1317 | } else { | |
22813fdb MR |
1318 | struct ospf6_route *tmp_route; |
1319 | ||
1320 | tmp_route = ospf6_route_create(oa->ospf6); | |
14ff96e6 DS |
1321 | |
1322 | ospf6_copy_nexthops(tmp_route->nh_list, | |
1323 | o_path->nh_list); | |
1324 | ||
8f1bf687 | 1325 | if (!ospf6_route_cmp_nexthops(tmp_route, route)) { |
14ff96e6 DS |
1326 | /* adv. router exists in the list, update nhs */ |
1327 | list_delete_all_node(o_path->nh_list); | |
1328 | ospf6_copy_nexthops(o_path->nh_list, | |
1329 | route->nh_list); | |
1330 | ospf6_route_delete(tmp_route); | |
1331 | } else { | |
1332 | /* adv. router has no change in nhs */ | |
1333 | old_entry_updated = false; | |
1334 | ospf6_route_delete(tmp_route); | |
1335 | continue; | |
1336 | } | |
6f19bb0e CS |
1337 | } |
1338 | ||
064d4355 | 1339 | if (is_debug) |
5e81f5dd DS |
1340 | zlog_debug( |
1341 | "%s: Update route: %s %p old cost %u new cost %u nh %u", | |
1342 | __func__, buf, (void *)old_route, | |
1343 | old_route->path.cost, route->path.cost, | |
b9b87bfc | 1344 | listcount(old_route->nh_list)); |
064d4355 | 1345 | |
6f19bb0e CS |
1346 | /* For Inter-Prefix route: Update RIB/FIB, |
1347 | * For Inter-Router trigger summary update | |
1348 | */ | |
d62a17ae | 1349 | if (table->hook_add) |
e285b70d | 1350 | (*table->hook_add)(old_route); |
d62a17ae | 1351 | |
99ab28cb CS |
1352 | break; |
1353 | } | |
1354 | ||
b9b87bfc S |
1355 | /* If the old entry is not updated and old entry not found or old entry |
1356 | * does not match with the new entry then add the new route | |
1357 | */ | |
99ab28cb | 1358 | if (old_entry_updated == false) { |
b9b87bfc | 1359 | if ((old == NULL) || (old->type != route->type) |
d8ff3709 KS |
1360 | || (old->path.type != route->path.type) |
1361 | || (old->path.cost != route->path.cost)) | |
b9b87bfc S |
1362 | add_route = true; |
1363 | } | |
1364 | ||
1365 | if (add_route) { | |
6f19bb0e | 1366 | if (is_debug) { |
5e81f5dd | 1367 | zlog_debug( |
b9b87bfc | 1368 | "%s: Install new route: %s cost %u nh %u adv_router %pI4", |
5e81f5dd | 1369 | __func__, buf, route->path.cost, |
dc138868 DL |
1370 | listcount(route->nh_list), |
1371 | &route->path.origin.adv_router); | |
6f19bb0e CS |
1372 | } |
1373 | ||
1374 | path = ospf6_path_dup(&route->path); | |
1375 | ospf6_copy_nexthops(path->nh_list, abr_entry->nh_list); | |
1376 | listnode_add_sort(route->paths, path); | |
d62a17ae | 1377 | /* ospf6_ia_add_nw_route (table, &prefix, route); */ |
e285b70d | 1378 | ospf6_route_add(route, table); |
de4a0bda PR |
1379 | } else |
1380 | /* if we did not add the route remove it */ | |
1381 | ospf6_route_delete(route); | |
049207c3 | 1382 | } |
1383 | ||
beadc736 | 1384 | void ospf6_abr_examin_brouter(uint32_t router_id, struct ospf6_route *route, |
1385 | struct ospf6 *ospf6) | |
ccb59b11 | 1386 | { |
d62a17ae | 1387 | struct ospf6_lsa *lsa; |
1388 | struct ospf6_area *oa; | |
d7c0a89a | 1389 | uint16_t type; |
d62a17ae | 1390 | |
beadc736 | 1391 | oa = ospf6_area_lookup(route->path.area_id, ospf6); |
d62a17ae | 1392 | /* |
1393 | * It is possible to designate a non backbone | |
1394 | * area first. If that is the case safely | |
1395 | * fall out of this function. | |
1396 | */ | |
1397 | if (oa == NULL) | |
1398 | return; | |
1399 | ||
1400 | type = htons(OSPF6_LSTYPE_INTER_ROUTER); | |
1401 | for (ALL_LSDB_TYPED_ADVRTR(oa->lsdb, type, router_id, lsa)) | |
1402 | ospf6_abr_examin_summary(lsa, oa); | |
1403 | ||
1404 | type = htons(OSPF6_LSTYPE_INTER_PREFIX); | |
1405 | for (ALL_LSDB_TYPED_ADVRTR(oa->lsdb, type, router_id, lsa)) | |
1406 | ospf6_abr_examin_summary(lsa, oa); | |
ccb59b11 | 1407 | } |
1408 | ||
d62a17ae | 1409 | void ospf6_abr_prefix_resummarize(struct ospf6 *o) |
ca1f4309 | 1410 | { |
d62a17ae | 1411 | struct ospf6_route *route; |
ca1f4309 | 1412 | |
d62a17ae | 1413 | if (IS_OSPF6_DEBUG_ABR) |
1414 | zlog_debug("Re-examining Inter-Prefix Summaries"); | |
ca1f4309 | 1415 | |
d62a17ae | 1416 | for (route = ospf6_route_head(o->route_table); route; |
1417 | route = ospf6_route_next(route)) | |
beadc736 | 1418 | ospf6_abr_originate_summary(route, o); |
ca1f4309 | 1419 | |
d62a17ae | 1420 | if (IS_OSPF6_DEBUG_ABR) |
1421 | zlog_debug("Finished re-examining Inter-Prefix Summaries"); | |
ca1f4309 | 1422 | } |
34956b31 | 1423 | |
6b0655a2 | 1424 | |
049207c3 | 1425 | /* Display functions */ |
d62a17ae | 1426 | static char *ospf6_inter_area_prefix_lsa_get_prefix_str(struct ospf6_lsa *lsa, |
1427 | char *buf, int buflen, | |
1428 | int pos) | |
e68a6767 | 1429 | { |
d62a17ae | 1430 | struct ospf6_inter_prefix_lsa *prefix_lsa; |
1431 | struct in6_addr in6; | |
7533cad7 | 1432 | char tbuf[16]; |
d62a17ae | 1433 | |
1434 | if (lsa != NULL) { | |
1435 | prefix_lsa = | |
1436 | (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( | |
1437 | lsa->header); | |
1438 | ||
b8ce0c36 | 1439 | ospf6_prefix_in6_addr(&in6, prefix_lsa, &prefix_lsa->prefix); |
d62a17ae | 1440 | if (buf) { |
1441 | inet_ntop(AF_INET6, &in6, buf, buflen); | |
7533cad7 QY |
1442 | snprintf(tbuf, sizeof(tbuf), "/%d", |
1443 | prefix_lsa->prefix.prefix_length); | |
1444 | strlcat(buf, tbuf, buflen); | |
d62a17ae | 1445 | } |
e68a6767 | 1446 | } |
e68a6767 | 1447 | |
d62a17ae | 1448 | return (buf); |
e68a6767 DD |
1449 | } |
1450 | ||
d62a17ae | 1451 | static int ospf6_inter_area_prefix_lsa_show(struct vty *vty, |
e4bacbaa YR |
1452 | struct ospf6_lsa *lsa, |
1453 | json_object *json_obj, | |
1454 | bool use_json) | |
049207c3 | 1455 | { |
d62a17ae | 1456 | struct ospf6_inter_prefix_lsa *prefix_lsa; |
1457 | char buf[INET6_ADDRSTRLEN]; | |
049207c3 | 1458 | |
d62a17ae | 1459 | prefix_lsa = (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( |
1460 | lsa->header); | |
049207c3 | 1461 | |
e4bacbaa YR |
1462 | if (use_json) { |
1463 | json_object_int_add( | |
1464 | json_obj, "metric", | |
1465 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(prefix_lsa)); | |
1466 | ospf6_prefix_options_printbuf(prefix_lsa->prefix.prefix_options, | |
1467 | buf, sizeof(buf)); | |
1468 | json_object_string_add(json_obj, "prefixOptions", buf); | |
1469 | json_object_string_add( | |
1470 | json_obj, "prefix", | |
1471 | ospf6_inter_area_prefix_lsa_get_prefix_str( | |
1472 | lsa, buf, sizeof(buf), 0)); | |
1473 | } else { | |
1474 | vty_out(vty, " Metric: %lu\n", | |
1475 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(prefix_lsa)); | |
049207c3 | 1476 | |
e4bacbaa YR |
1477 | ospf6_prefix_options_printbuf(prefix_lsa->prefix.prefix_options, |
1478 | buf, sizeof(buf)); | |
1479 | vty_out(vty, " Prefix Options: %s\n", buf); | |
049207c3 | 1480 | |
e4bacbaa YR |
1481 | vty_out(vty, " Prefix: %s\n", |
1482 | ospf6_inter_area_prefix_lsa_get_prefix_str( | |
1483 | lsa, buf, sizeof(buf), 0)); | |
1484 | } | |
049207c3 | 1485 | |
d62a17ae | 1486 | return 0; |
049207c3 | 1487 | } |
1488 | ||
d62a17ae | 1489 | static char *ospf6_inter_area_router_lsa_get_prefix_str(struct ospf6_lsa *lsa, |
1490 | char *buf, int buflen, | |
1491 | int pos) | |
e68a6767 | 1492 | { |
d62a17ae | 1493 | struct ospf6_inter_router_lsa *router_lsa; |
e68a6767 | 1494 | |
d62a17ae | 1495 | if (lsa != NULL) { |
1496 | router_lsa = | |
1497 | (struct ospf6_inter_router_lsa *)OSPF6_LSA_HEADER_END( | |
1498 | lsa->header); | |
e68a6767 DD |
1499 | |
1500 | ||
d62a17ae | 1501 | if (buf) |
1502 | inet_ntop(AF_INET, &router_lsa->router_id, buf, buflen); | |
1503 | } | |
e68a6767 | 1504 | |
d62a17ae | 1505 | return (buf); |
e68a6767 DD |
1506 | } |
1507 | ||
d62a17ae | 1508 | static int ospf6_inter_area_router_lsa_show(struct vty *vty, |
e4bacbaa YR |
1509 | struct ospf6_lsa *lsa, |
1510 | json_object *json_obj, | |
1511 | bool use_json) | |
049207c3 | 1512 | { |
d62a17ae | 1513 | struct ospf6_inter_router_lsa *router_lsa; |
1514 | char buf[64]; | |
049207c3 | 1515 | |
d62a17ae | 1516 | router_lsa = (struct ospf6_inter_router_lsa *)OSPF6_LSA_HEADER_END( |
1517 | lsa->header); | |
049207c3 | 1518 | |
d62a17ae | 1519 | ospf6_options_printbuf(router_lsa->options, buf, sizeof(buf)); |
e4bacbaa YR |
1520 | if (use_json) { |
1521 | json_object_string_add(json_obj, "options", buf); | |
1522 | json_object_int_add( | |
1523 | json_obj, "metric", | |
1524 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(router_lsa)); | |
1525 | } else { | |
1526 | vty_out(vty, " Options: %s\n", buf); | |
1527 | vty_out(vty, " Metric: %lu\n", | |
1528 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(router_lsa)); | |
1529 | } | |
e68a6767 | 1530 | |
d62a17ae | 1531 | inet_ntop(AF_INET, &router_lsa->router_id, buf, sizeof(buf)); |
e4bacbaa YR |
1532 | if (use_json) |
1533 | json_object_string_add(json_obj, "destinationRouterId", buf); | |
1534 | else | |
1535 | vty_out(vty, " Destination Router ID: %s\n", buf); | |
049207c3 | 1536 | |
d62a17ae | 1537 | return 0; |
049207c3 | 1538 | } |
1539 | ||
1540 | /* Debug commands */ | |
1541 | DEFUN (debug_ospf6_abr, | |
1542 | debug_ospf6_abr_cmd, | |
1543 | "debug ospf6 abr", | |
1544 | DEBUG_STR | |
1545 | OSPF6_STR | |
1546 | "Debug OSPFv3 ABR function\n" | |
1547 | ) | |
1548 | { | |
d62a17ae | 1549 | OSPF6_DEBUG_ABR_ON(); |
1550 | return CMD_SUCCESS; | |
049207c3 | 1551 | } |
1552 | ||
1553 | DEFUN (no_debug_ospf6_abr, | |
1554 | no_debug_ospf6_abr_cmd, | |
1555 | "no debug ospf6 abr", | |
1556 | NO_STR | |
1557 | DEBUG_STR | |
1558 | OSPF6_STR | |
1559 | "Debug OSPFv3 ABR function\n" | |
1560 | ) | |
1561 | { | |
d62a17ae | 1562 | OSPF6_DEBUG_ABR_OFF(); |
1563 | return CMD_SUCCESS; | |
049207c3 | 1564 | } |
1565 | ||
d62a17ae | 1566 | int config_write_ospf6_debug_abr(struct vty *vty) |
049207c3 | 1567 | { |
d62a17ae | 1568 | if (IS_OSPF6_DEBUG_ABR) |
1569 | vty_out(vty, "debug ospf6 abr\n"); | |
1570 | return 0; | |
049207c3 | 1571 | } |
1572 | ||
d62a17ae | 1573 | void install_element_ospf6_debug_abr(void) |
049207c3 | 1574 | { |
d62a17ae | 1575 | install_element(ENABLE_NODE, &debug_ospf6_abr_cmd); |
1576 | install_element(ENABLE_NODE, &no_debug_ospf6_abr_cmd); | |
1577 | install_element(CONFIG_NODE, &debug_ospf6_abr_cmd); | |
1578 | install_element(CONFIG_NODE, &no_debug_ospf6_abr_cmd); | |
049207c3 | 1579 | } |
1580 | ||
4062abfa | 1581 | static struct ospf6_lsa_handler inter_prefix_handler = { |
3981b5c7 VJ |
1582 | .lh_type = OSPF6_LSTYPE_INTER_PREFIX, |
1583 | .lh_name = "Inter-Prefix", | |
1584 | .lh_short_name = "IAP", | |
1585 | .lh_show = ospf6_inter_area_prefix_lsa_show, | |
1586 | .lh_get_prefix_str = ospf6_inter_area_prefix_lsa_get_prefix_str, | |
996c9314 | 1587 | .lh_debug = 0}; |
6452df09 | 1588 | |
4062abfa | 1589 | static struct ospf6_lsa_handler inter_router_handler = { |
3981b5c7 VJ |
1590 | .lh_type = OSPF6_LSTYPE_INTER_ROUTER, |
1591 | .lh_name = "Inter-Router", | |
1592 | .lh_short_name = "IAR", | |
1593 | .lh_show = ospf6_inter_area_router_lsa_show, | |
1594 | .lh_get_prefix_str = ospf6_inter_area_router_lsa_get_prefix_str, | |
996c9314 | 1595 | .lh_debug = 0}; |
6452df09 | 1596 | |
d62a17ae | 1597 | void ospf6_abr_init(void) |
049207c3 | 1598 | { |
d62a17ae | 1599 | ospf6_install_lsa_handler(&inter_prefix_handler); |
1600 | ospf6_install_lsa_handler(&inter_router_handler); | |
049207c3 | 1601 | } |