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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
049207c3 | 2 | /* |
3 | * Area Border Router function. | |
4 | * Copyright (C) 2004 Yasuhiro Ohara | |
049207c3 | 5 | */ |
6 | ||
7 | #include <zebra.h> | |
8 | ||
9 | #include "log.h" | |
10 | #include "prefix.h" | |
11 | #include "table.h" | |
12 | #include "vty.h" | |
13 | #include "linklist.h" | |
14 | #include "command.h" | |
3b68735f | 15 | #include "thread.h" |
34956b31 | 16 | #include "plist.h" |
17 | #include "filter.h" | |
049207c3 | 18 | |
19 | #include "ospf6_proto.h" | |
20 | #include "ospf6_route.h" | |
21 | #include "ospf6_lsa.h" | |
22 | #include "ospf6_route.h" | |
23 | #include "ospf6_lsdb.h" | |
6452df09 | 24 | #include "ospf6_message.h" |
c3c0ac83 | 25 | #include "ospf6_zebra.h" |
6452df09 | 26 | |
049207c3 | 27 | #include "ospf6_top.h" |
28 | #include "ospf6_area.h" | |
29 | #include "ospf6_interface.h" | |
6452df09 | 30 | #include "ospf6_neighbor.h" |
31 | ||
6452df09 | 32 | #include "ospf6_flood.h" |
3b68735f | 33 | #include "ospf6_intra.h" |
5f6635b9 | 34 | #include "ospf6_asbr.h" |
3b68735f | 35 | #include "ospf6_abr.h" |
049207c3 | 36 | #include "ospf6d.h" |
ad500b22 | 37 | #include "ospf6_nssa.h" |
049207c3 | 38 | |
39 | unsigned char conf_debug_ospf6_abr; | |
40 | ||
bc465fb6 | 41 | int ospf6_ls_origin_same(struct ospf6_path *o_path, struct ospf6_path *r_path) |
25dd89e3 | 42 | { |
bc465fb6 MN |
43 | if (((o_path->origin.type == r_path->origin.type) |
44 | && (o_path->origin.id == r_path->origin.id) | |
45 | && (o_path->origin.adv_router == r_path->origin.adv_router))) | |
25dd89e3 MN |
46 | return 1; |
47 | else | |
48 | return 0; | |
49 | } | |
50 | ||
95b3f03d | 51 | bool ospf6_check_and_set_router_abr(struct ospf6 *o) |
6452df09 | 52 | { |
d62a17ae | 53 | struct listnode *node; |
54 | struct ospf6_area *oa; | |
55 | int area_count = 0; | |
ad500b22 | 56 | bool is_backbone = false; |
6452df09 | 57 | |
ad500b22 K |
58 | for (ALL_LIST_ELEMENTS_RO(o->area_list, node, oa)) { |
59 | if (IS_OSPF6_DEBUG_ABR) | |
60 | zlog_debug("%s, area_id %pI4", __func__, &oa->area_id); | |
d62a17ae | 61 | if (IS_AREA_ENABLED(oa)) |
62 | area_count++; | |
6452df09 | 63 | |
ad500b22 K |
64 | if (o->backbone == oa) |
65 | is_backbone = true; | |
66 | } | |
67 | ||
68 | if ((area_count > 1) && (is_backbone)) { | |
69 | if (IS_OSPF6_DEBUG_ABR) | |
70 | zlog_debug("%s : set flag OSPF6_FLAG_ABR", __func__); | |
71 | SET_FLAG(o->flag, OSPF6_FLAG_ABR); | |
95b3f03d | 72 | return true; |
ad500b22 K |
73 | } else { |
74 | if (IS_OSPF6_DEBUG_ABR) | |
75 | zlog_debug("%s : reset flag OSPF6_FLAG_ABR", __func__); | |
76 | UNSET_FLAG(o->flag, OSPF6_FLAG_ABR); | |
95b3f03d | 77 | return false; |
ad500b22 | 78 | } |
6452df09 | 79 | } |
80 | ||
d62a17ae | 81 | static int ospf6_abr_nexthops_belong_to_area(struct ospf6_route *route, |
82 | struct ospf6_area *area) | |
c3c0ac83 | 83 | { |
d62a17ae | 84 | struct ospf6_interface *oi; |
85 | ||
86 | oi = ospf6_interface_lookup_by_ifindex( | |
c5d28568 | 87 | ospf6_route_get_first_nh_index(route), area->ospf6->vrf_id); |
d62a17ae | 88 | if (oi && oi->area && oi->area == area) |
89 | return 1; | |
90 | else | |
91 | return 0; | |
c3c0ac83 DS |
92 | } |
93 | ||
578e1c53 | 94 | static void ospf6_abr_delete_route(struct ospf6_route *summary, |
d62a17ae | 95 | struct ospf6_route_table *summary_table, |
e285b70d | 96 | struct ospf6_lsa *old) |
c3c0ac83 | 97 | { |
d62a17ae | 98 | if (summary) { |
e285b70d | 99 | ospf6_route_remove(summary, summary_table); |
d62a17ae | 100 | } |
c3c0ac83 | 101 | |
d62a17ae | 102 | if (old && !OSPF6_LSA_IS_MAXAGE(old)) |
103 | ospf6_lsa_purge(old); | |
c3c0ac83 DS |
104 | } |
105 | ||
d62a17ae | 106 | void ospf6_abr_enable_area(struct ospf6_area *area) |
3b68735f | 107 | { |
d62a17ae | 108 | struct ospf6_area *oa; |
109 | struct listnode *node, *nnode; | |
3b68735f | 110 | |
d62a17ae | 111 | for (ALL_LIST_ELEMENTS(area->ospf6->area_list, node, nnode, oa)) |
112 | /* update B bit for each area */ | |
113 | OSPF6_ROUTER_LSA_SCHEDULE(oa); | |
3b68735f | 114 | } |
115 | ||
d62a17ae | 116 | void ospf6_abr_disable_area(struct ospf6_area *area) |
3b68735f | 117 | { |
d62a17ae | 118 | struct ospf6_area *oa; |
119 | struct ospf6_route *ro, *nro; | |
120 | struct ospf6_lsa *old; | |
121 | struct listnode *node, *nnode; | |
122 | ||
123 | /* Withdraw all summary prefixes previously originated */ | |
124 | for (ro = ospf6_route_head(area->summary_prefix); 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_prefix); |
d62a17ae | 132 | } |
133 | ||
134 | /* Withdraw all summary router-routes previously originated */ | |
135 | for (ro = ospf6_route_head(area->summary_router); ro; ro = nro) { | |
136 | nro = ospf6_route_next(ro); | |
137 | old = ospf6_lsdb_lookup(ro->path.origin.type, | |
138 | ro->path.origin.id, | |
139 | area->ospf6->router_id, area->lsdb); | |
140 | if (old) | |
141 | ospf6_lsa_purge(old); | |
e285b70d | 142 | ospf6_route_remove(ro, area->summary_router); |
d62a17ae | 143 | } |
144 | ||
145 | /* Schedule Router-LSA for each area (ABR status may change) */ | |
146 | for (ALL_LIST_ELEMENTS(area->ospf6->area_list, node, nnode, oa)) | |
147 | /* update B bit for each area */ | |
148 | OSPF6_ROUTER_LSA_SCHEDULE(oa); | |
3b68735f | 149 | } |
150 | ||
049207c3 | 151 | /* RFC 2328 12.4.3. Summary-LSAs */ |
ca1f4309 DS |
152 | /* Returns 1 if a summary LSA has been generated for the area */ |
153 | /* This is used by the area/range logic to add/remove blackhole routes */ | |
d62a17ae | 154 | int ospf6_abr_originate_summary_to_area(struct ospf6_route *route, |
155 | struct ospf6_area *area) | |
049207c3 | 156 | { |
d62a17ae | 157 | struct ospf6_lsa *lsa, *old = NULL; |
158 | struct ospf6_route *summary, *range = NULL; | |
159 | struct ospf6_area *route_area; | |
160 | char buffer[OSPF6_MAX_LSASIZE]; | |
161 | struct ospf6_lsa_header *lsa_header; | |
162 | caddr_t p; | |
163 | struct ospf6_inter_prefix_lsa *prefix_lsa; | |
164 | struct ospf6_inter_router_lsa *router_lsa; | |
165 | struct ospf6_route_table *summary_table = NULL; | |
d7c0a89a | 166 | uint16_t type; |
d62a17ae | 167 | int is_debug = 0; |
168 | ||
9142948e RW |
169 | if (IS_OSPF6_DEBUG_ABR) { |
170 | char buf[BUFSIZ]; | |
171 | ||
172 | if (route->type == OSPF6_DEST_TYPE_ROUTER) | |
173 | inet_ntop(AF_INET, | |
174 | &ADV_ROUTER_IN_PREFIX(&route->prefix), buf, | |
175 | sizeof(buf)); | |
176 | else | |
177 | prefix2str(&route->prefix, buf, sizeof(buf)); | |
178 | ||
179 | zlog_debug("%s : start area %s, route %s", __func__, area->name, | |
180 | buf); | |
181 | } | |
ad500b22 K |
182 | |
183 | if (route->type == OSPF6_DEST_TYPE_ROUTER) | |
184 | summary_table = area->summary_router; | |
185 | else | |
186 | summary_table = area->summary_prefix; | |
187 | ||
188 | summary = ospf6_route_lookup(&route->prefix, summary_table); | |
189 | if (summary) { | |
190 | old = ospf6_lsdb_lookup(summary->path.origin.type, | |
191 | summary->path.origin.id, | |
192 | area->ospf6->router_id, area->lsdb); | |
193 | /* Reset the OSPF6_LSA_UNAPPROVED flag */ | |
194 | if (old) | |
195 | UNSET_FLAG(old->flag, OSPF6_LSA_UNAPPROVED); | |
196 | } | |
197 | ||
d62a17ae | 198 | /* Only destination type network, range or ASBR are considered */ |
199 | if (route->type != OSPF6_DEST_TYPE_NETWORK | |
200 | && route->type != OSPF6_DEST_TYPE_RANGE | |
201 | && ((route->type != OSPF6_DEST_TYPE_ROUTER) | |
202 | || !CHECK_FLAG(route->path.router_bits, OSPF6_ROUTER_BIT_E))) { | |
ad500b22 K |
203 | if (IS_OSPF6_DEBUG_ABR) |
204 | zlog_debug( | |
205 | "%s: Route type %d flag 0x%x is none of network, range nor ASBR, ignore", | |
206 | __func__, route->type, route->path.router_bits); | |
d62a17ae | 207 | return 0; |
c3c0ac83 | 208 | } |
d62a17ae | 209 | |
210 | /* AS External routes are never considered */ | |
211 | if (route->path.type == OSPF6_PATH_TYPE_EXTERNAL1 | |
212 | || route->path.type == OSPF6_PATH_TYPE_EXTERNAL2) { | |
ad500b22 K |
213 | if (IS_OSPF6_DEBUG_ABR) |
214 | zlog_debug("%s : Path type is external, skip", | |
215 | __func__); | |
d62a17ae | 216 | return 0; |
c3c0ac83 | 217 | } |
d62a17ae | 218 | |
219 | /* do not generate if the path's area is the same as target area */ | |
220 | if (route->path.area_id == area->area_id) { | |
ad500b22 K |
221 | if (IS_OSPF6_DEBUG_ABR) |
222 | zlog_debug( | |
223 | "%s: The route is in the area itself, ignore", | |
224 | __func__); | |
d62a17ae | 225 | return 0; |
226 | } | |
227 | ||
f4f0098c RW |
228 | if (route->type == OSPF6_DEST_TYPE_NETWORK) { |
229 | bool filter = false; | |
230 | ||
231 | route_area = | |
232 | ospf6_area_lookup(route->path.area_id, area->ospf6); | |
233 | assert(route_area); | |
234 | ||
235 | /* Check export-list */ | |
236 | if (EXPORT_LIST(route_area) | |
237 | && access_list_apply(EXPORT_LIST(route_area), | |
238 | &route->prefix) | |
239 | == FILTER_DENY) { | |
240 | if (IS_OSPF6_DEBUG_ABR) | |
241 | zlog_debug( | |
242 | "%s: prefix %pFX was denied by export-list", | |
243 | __func__, &route->prefix); | |
244 | filter = true; | |
245 | } | |
246 | ||
247 | /* Check output prefix-list */ | |
248 | if (PREFIX_LIST_OUT(route_area) | |
249 | && prefix_list_apply(PREFIX_LIST_OUT(route_area), | |
250 | &route->prefix) | |
251 | != PREFIX_PERMIT) { | |
252 | if (IS_OSPF6_DEBUG_ABR) | |
253 | zlog_debug( | |
254 | "%s: prefix %pFX was denied by prefix-list out", | |
255 | __func__, &route->prefix); | |
256 | filter = true; | |
257 | } | |
258 | ||
259 | /* Check import-list */ | |
260 | if (IMPORT_LIST(area) | |
261 | && access_list_apply(IMPORT_LIST(area), &route->prefix) | |
262 | == FILTER_DENY) { | |
263 | if (IS_OSPF6_DEBUG_ABR) | |
264 | zlog_debug( | |
265 | "%s: prefix %pFX was denied by import-list", | |
266 | __func__, &route->prefix); | |
267 | filter = true; | |
268 | } | |
269 | ||
270 | /* Check input prefix-list */ | |
271 | if (PREFIX_LIST_IN(area) | |
272 | && prefix_list_apply(PREFIX_LIST_IN(area), &route->prefix) | |
273 | != PREFIX_PERMIT) { | |
274 | if (IS_OSPF6_DEBUG_ABR) | |
275 | zlog_debug( | |
276 | "%s: prefix %pFX was denied by prefix-list in", | |
277 | __func__, &route->prefix); | |
278 | filter = true; | |
279 | } | |
280 | ||
281 | if (filter) { | |
282 | if (summary) { | |
283 | ospf6_route_remove(summary, summary_table); | |
284 | if (old) | |
285 | ospf6_lsa_purge(old); | |
286 | } | |
287 | return 0; | |
288 | } | |
289 | } | |
290 | ||
d62a17ae | 291 | /* do not generate if the nexthops belongs to the target area */ |
292 | if (ospf6_abr_nexthops_belong_to_area(route, area)) { | |
ad500b22 K |
293 | if (IS_OSPF6_DEBUG_ABR) |
294 | zlog_debug( | |
295 | "%s: The route's nexthop is in the same area, ignore", | |
296 | __func__); | |
d62a17ae | 297 | return 0; |
298 | } | |
299 | ||
300 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
301 | if (ADV_ROUTER_IN_PREFIX(&route->prefix) | |
302 | == area->ospf6->router_id) { | |
ad500b22 K |
303 | if (IS_OSPF6_DEBUG_ABR) |
304 | zlog_debug( | |
305 | "%s: Skipping ASBR announcement for ABR (%pI4)", | |
306 | __func__, | |
307 | &ADV_ROUTER_IN_PREFIX(&route->prefix)); | |
d62a17ae | 308 | return 0; |
309 | } | |
310 | } | |
311 | ||
312 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
313 | if (IS_OSPF6_DEBUG_ABR | |
314 | || IS_OSPF6_DEBUG_ORIGINATE(INTER_ROUTER)) { | |
315 | is_debug++; | |
ad500b22 K |
316 | if (IS_OSPF6_DEBUG_ABR) |
317 | zlog_debug( | |
318 | "Originating summary in area %s for ASBR %pI4", | |
319 | area->name, | |
320 | &ADV_ROUTER_IN_PREFIX(&route->prefix)); | |
d62a17ae | 321 | } |
d62a17ae | 322 | } else { |
323 | if (IS_OSPF6_DEBUG_ABR | |
6f19bb0e | 324 | || IS_OSPF6_DEBUG_ORIGINATE(INTER_PREFIX)) |
d62a17ae | 325 | is_debug++; |
6f19bb0e CS |
326 | |
327 | if (route->type == OSPF6_DEST_TYPE_NETWORK && | |
328 | route->path.origin.type == | |
329 | htons(OSPF6_LSTYPE_INTER_PREFIX)) { | |
330 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) { | |
2dbe669b | 331 | if (is_debug) |
6f19bb0e | 332 | zlog_debug( |
2dbe669b | 333 | "%s: route %pFX with cost %u is not best, ignore.", |
72327cf3 | 334 | __func__, &route->prefix, |
6f19bb0e | 335 | route->path.cost); |
6f19bb0e CS |
336 | return 0; |
337 | } | |
338 | } | |
339 | ||
276aa265 CS |
340 | if (route->path.origin.type == |
341 | htons(OSPF6_LSTYPE_INTRA_PREFIX)) { | |
342 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) { | |
2dbe669b | 343 | if (is_debug) |
15569c58 | 344 | zlog_debug( |
2dbe669b DA |
345 | "%s: intra-prefix route %pFX with cost %u is not best, ignore.", |
346 | __func__, &route->prefix, | |
15569c58 | 347 | route->path.cost); |
276aa265 CS |
348 | return 0; |
349 | } | |
350 | } | |
351 | ||
2dbe669b DA |
352 | if (is_debug) |
353 | zlog_debug( | |
354 | "Originating summary in area %s for %pFX cost %u", | |
355 | area->name, &route->prefix, route->path.cost); | |
d62a17ae | 356 | } |
357 | ||
d62a17ae | 358 | /* if this route has just removed, remove corresponding LSA */ |
359 | if (CHECK_FLAG(route->flag, OSPF6_ROUTE_REMOVE)) { | |
360 | if (is_debug) | |
361 | zlog_debug( | |
362 | "The route has just removed, purge previous LSA"); | |
363 | ||
364 | if (route->type == OSPF6_DEST_TYPE_RANGE) { | |
365 | /* Whether the route have active longer prefix */ | |
366 | if (!CHECK_FLAG(route->flag, | |
367 | OSPF6_ROUTE_ACTIVE_SUMMARY)) { | |
368 | if (is_debug) | |
369 | zlog_debug( | |
370 | "The range is not active. withdraw"); | |
371 | ||
578e1c53 RW |
372 | ospf6_abr_delete_route(summary, summary_table, |
373 | old); | |
d62a17ae | 374 | } |
276aa265 | 375 | } else if (old) { |
e285b70d | 376 | ospf6_route_remove(summary, summary_table); |
d62a17ae | 377 | ospf6_lsa_purge(old); |
276aa265 | 378 | } |
d62a17ae | 379 | return 0; |
380 | } | |
381 | ||
c01326c6 | 382 | if ((route->type == OSPF6_DEST_TYPE_ROUTER) |
383 | && (IS_AREA_STUB(area) || IS_AREA_NSSA(area))) { | |
d62a17ae | 384 | if (is_debug) |
385 | zlog_debug( | |
386 | "Area has been stubbed, purge Inter-Router LSA"); | |
387 | ||
578e1c53 | 388 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 389 | return 0; |
390 | } | |
391 | ||
392 | if (area->no_summary | |
393 | && (route->path.subtype != OSPF6_PATH_SUBTYPE_DEFAULT_RT)) { | |
394 | if (is_debug) | |
395 | zlog_debug("Area has been stubbed, purge prefix LSA"); | |
396 | ||
578e1c53 | 397 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 398 | return 0; |
399 | } | |
400 | ||
401 | /* do not generate if the route cost is greater or equal to LSInfinity | |
402 | */ | |
403 | if (route->path.cost >= OSPF_LS_INFINITY) { | |
404 | /* When we're clearing the range route because all active | |
405 | * prefixes | |
406 | * under the range are gone, we set the range's cost to | |
407 | * OSPF_AREA_RANGE_COST_UNSPEC, which is > OSPF_LS_INFINITY. We | |
408 | * don't want to trigger the code here for that. This code is | |
409 | * for | |
410 | * handling routes that have gone to infinity. The range removal | |
411 | * happens | |
412 | * elsewhere. | |
413 | */ | |
414 | if ((route->type != OSPF6_DEST_TYPE_RANGE) | |
415 | && (route->path.cost != OSPF_AREA_RANGE_COST_UNSPEC)) { | |
416 | if (is_debug) | |
417 | zlog_debug( | |
418 | "The cost exceeds LSInfinity, withdraw"); | |
419 | if (old) | |
420 | ospf6_lsa_purge(old); | |
421 | return 0; | |
422 | } | |
423 | } | |
424 | ||
425 | /* if this is a route to ASBR */ | |
426 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
0437e105 | 427 | /* Only the preferred best path is considered */ |
d62a17ae | 428 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) { |
429 | if (is_debug) | |
430 | zlog_debug( | |
431 | "This is the secondary path to the ASBR, ignore"); | |
578e1c53 | 432 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 433 | return 0; |
434 | } | |
435 | ||
5a0e96e6 | 436 | /* Do not generate if area is NSSA */ |
437 | route_area = | |
438 | ospf6_area_lookup(route->path.area_id, area->ospf6); | |
e146082d | 439 | assert(route_area); |
440 | ||
5a0e96e6 | 441 | if (IS_AREA_NSSA(route_area)) { |
442 | if (is_debug) | |
443 | zlog_debug( | |
444 | "%s: The route comes from NSSA area, skip", | |
445 | __func__); | |
446 | ospf6_abr_delete_route(summary, summary_table, old); | |
447 | return 0; | |
448 | } | |
449 | ||
d62a17ae | 450 | /* Do not generate if the area is stub */ |
451 | /* XXX */ | |
452 | } | |
453 | ||
454 | /* if this is an intra-area route, this may be suppressed by aggregation | |
455 | */ | |
456 | if (route->type == OSPF6_DEST_TYPE_NETWORK | |
457 | && route->path.type == OSPF6_PATH_TYPE_INTRA) { | |
458 | /* search for configured address range for the route's area */ | |
459 | route_area = | |
460 | ospf6_area_lookup(route->path.area_id, area->ospf6); | |
461 | assert(route_area); | |
462 | range = ospf6_route_lookup_bestmatch(&route->prefix, | |
463 | route_area->range_table); | |
464 | ||
465 | /* ranges are ignored when originate backbone routes to transit | |
466 | area. | |
467 | Otherwise, if ranges are configured, the route is suppressed. | |
468 | */ | |
469 | if (range && !CHECK_FLAG(range->flag, OSPF6_ROUTE_REMOVE) | |
470 | && (route->path.area_id != OSPF_AREA_BACKBONE | |
471 | || !IS_AREA_TRANSIT(area))) { | |
2dbe669b DA |
472 | if (is_debug) |
473 | zlog_debug( | |
474 | "Suppressed by range %pFX of area %s", | |
475 | &range->prefix, route_area->name); | |
4ef96a70 XX |
476 | /* The existing summary route could be a range, don't |
477 | * remove it in this case | |
478 | */ | |
479 | if (summary && summary->type != OSPF6_DEST_TYPE_RANGE) | |
480 | ospf6_abr_delete_route(summary, summary_table, | |
481 | old); | |
d62a17ae | 482 | return 0; |
483 | } | |
484 | } | |
485 | ||
486 | /* If this is a configured address range */ | |
487 | if (route->type == OSPF6_DEST_TYPE_RANGE) { | |
488 | /* If DoNotAdvertise is set */ | |
489 | if (CHECK_FLAG(route->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE)) { | |
490 | if (is_debug) | |
491 | zlog_debug( | |
492 | "This is the range with DoNotAdvertise set. ignore"); | |
578e1c53 | 493 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 494 | return 0; |
495 | } | |
496 | ||
497 | /* If there are no active prefixes in this range, remove */ | |
498 | if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_ACTIVE_SUMMARY)) { | |
499 | if (is_debug) | |
500 | zlog_debug("The range is not active. withdraw"); | |
578e1c53 | 501 | ospf6_abr_delete_route(summary, summary_table, old); |
d62a17ae | 502 | return 0; |
503 | } | |
504 | } | |
505 | ||
d62a17ae | 506 | /* the route is going to be originated. store it in area's summary_table |
507 | */ | |
508 | if (summary == NULL) { | |
509 | summary = ospf6_route_copy(route); | |
510 | summary->path.origin.adv_router = area->ospf6->router_id; | |
511 | ||
512 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
513 | summary->path.origin.type = | |
514 | htons(OSPF6_LSTYPE_INTER_ROUTER); | |
515 | summary->path.origin.id = | |
516 | ADV_ROUTER_IN_PREFIX(&route->prefix); | |
517 | } else { | |
518 | summary->path.origin.type = | |
519 | htons(OSPF6_LSTYPE_INTER_PREFIX); | |
520 | summary->path.origin.id = ospf6_new_ls_id( | |
521 | summary->path.origin.type, | |
522 | summary->path.origin.adv_router, area->lsdb); | |
523 | } | |
e285b70d | 524 | summary = ospf6_route_add(summary, summary_table); |
d62a17ae | 525 | } else { |
526 | summary->type = route->type; | |
527 | monotime(&summary->changed); | |
c3c0ac83 | 528 | } |
d62a17ae | 529 | |
4699ad72 | 530 | summary->prefix_options = route->prefix_options; |
d62a17ae | 531 | summary->path.router_bits = route->path.router_bits; |
532 | summary->path.options[0] = route->path.options[0]; | |
533 | summary->path.options[1] = route->path.options[1]; | |
534 | summary->path.options[2] = route->path.options[2]; | |
d62a17ae | 535 | summary->path.area_id = area->area_id; |
536 | summary->path.type = OSPF6_PATH_TYPE_INTER; | |
537 | summary->path.subtype = route->path.subtype; | |
538 | summary->path.cost = route->path.cost; | |
539 | /* summary->nexthop[0] = route->nexthop[0]; */ | |
540 | ||
541 | /* prepare buffer */ | |
542 | memset(buffer, 0, sizeof(buffer)); | |
543 | lsa_header = (struct ospf6_lsa_header *)buffer; | |
544 | ||
545 | if (route->type == OSPF6_DEST_TYPE_ROUTER) { | |
546 | router_lsa = (struct ospf6_inter_router_lsa | |
547 | *)((caddr_t)lsa_header | |
548 | + sizeof(struct ospf6_lsa_header)); | |
549 | p = (caddr_t)router_lsa + sizeof(struct ospf6_inter_router_lsa); | |
550 | ||
551 | /* Fill Inter-Area-Router-LSA */ | |
552 | router_lsa->options[0] = route->path.options[0]; | |
553 | router_lsa->options[1] = route->path.options[1]; | |
554 | router_lsa->options[2] = route->path.options[2]; | |
555 | OSPF6_ABR_SUMMARY_METRIC_SET(router_lsa, route->path.cost); | |
556 | router_lsa->router_id = ADV_ROUTER_IN_PREFIX(&route->prefix); | |
557 | type = htons(OSPF6_LSTYPE_INTER_ROUTER); | |
558 | } else { | |
559 | prefix_lsa = (struct ospf6_inter_prefix_lsa | |
560 | *)((caddr_t)lsa_header | |
561 | + sizeof(struct ospf6_lsa_header)); | |
562 | p = (caddr_t)prefix_lsa + sizeof(struct ospf6_inter_prefix_lsa); | |
563 | ||
564 | /* Fill Inter-Area-Prefix-LSA */ | |
565 | OSPF6_ABR_SUMMARY_METRIC_SET(prefix_lsa, route->path.cost); | |
566 | prefix_lsa->prefix.prefix_length = route->prefix.prefixlen; | |
4699ad72 | 567 | prefix_lsa->prefix.prefix_options = route->prefix_options; |
d62a17ae | 568 | |
569 | /* set Prefix */ | |
570 | memcpy(p, &route->prefix.u.prefix6, | |
571 | OSPF6_PREFIX_SPACE(route->prefix.prefixlen)); | |
572 | ospf6_prefix_apply_mask(&prefix_lsa->prefix); | |
573 | p += OSPF6_PREFIX_SPACE(route->prefix.prefixlen); | |
574 | type = htons(OSPF6_LSTYPE_INTER_PREFIX); | |
c3c0ac83 | 575 | } |
d62a17ae | 576 | |
577 | /* Fill LSA Header */ | |
578 | lsa_header->age = 0; | |
579 | lsa_header->type = type; | |
580 | lsa_header->id = summary->path.origin.id; | |
581 | lsa_header->adv_router = area->ospf6->router_id; | |
582 | lsa_header->seqnum = | |
583 | ospf6_new_ls_seqnum(lsa_header->type, lsa_header->id, | |
584 | lsa_header->adv_router, area->lsdb); | |
585 | lsa_header->length = htons((caddr_t)p - (caddr_t)lsa_header); | |
586 | ||
587 | /* LSA checksum */ | |
588 | ospf6_lsa_checksum(lsa_header); | |
589 | ||
590 | /* create LSA */ | |
591 | lsa = ospf6_lsa_create(lsa_header); | |
592 | ||
ad500b22 K |
593 | /* Reset the unapproved flag */ |
594 | UNSET_FLAG(lsa->flag, OSPF6_LSA_UNAPPROVED); | |
595 | ||
d62a17ae | 596 | /* Originate */ |
597 | ospf6_lsa_originate_area(lsa, area); | |
598 | ||
ad500b22 K |
599 | if (IS_OSPF6_DEBUG_ABR) |
600 | zlog_debug("%s : finish area %s", __func__, area->name); | |
601 | ||
d62a17ae | 602 | return 1; |
6452df09 | 603 | } |
604 | ||
d62a17ae | 605 | void ospf6_abr_range_reset_cost(struct ospf6 *ospf6) |
ca1f4309 | 606 | { |
d62a17ae | 607 | struct listnode *node, *nnode; |
608 | struct ospf6_area *oa; | |
609 | struct ospf6_route *range; | |
610 | ||
3c77bc80 | 611 | for (ALL_LIST_ELEMENTS(ospf6->area_list, node, nnode, oa)) { |
d62a17ae | 612 | for (range = ospf6_route_head(oa->range_table); range; |
613 | range = ospf6_route_next(range)) | |
614 | OSPF6_ABR_RANGE_CLEAR_COST(range); | |
3c77bc80 RW |
615 | for (range = ospf6_route_head(oa->nssa_range_table); range; |
616 | range = ospf6_route_next(range)) | |
617 | OSPF6_ABR_RANGE_CLEAR_COST(range); | |
618 | } | |
ca1f4309 DS |
619 | } |
620 | ||
d7c0a89a QY |
621 | static inline uint32_t ospf6_abr_range_compute_cost(struct ospf6_route *range, |
622 | struct ospf6 *o) | |
6452df09 | 623 | { |
d62a17ae | 624 | struct ospf6_route *ro; |
d7c0a89a | 625 | uint32_t cost = 0; |
d62a17ae | 626 | |
627 | for (ro = ospf6_route_match_head(&range->prefix, o->route_table); ro; | |
628 | ro = ospf6_route_match_next(&range->prefix, ro)) { | |
3c77bc80 RW |
629 | if (CHECK_FLAG(ro->flag, OSPF6_ROUTE_REMOVE)) |
630 | continue; | |
631 | if (ro->path.area_id != range->path.area_id) | |
632 | continue; | |
633 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_NSSA_RANGE) | |
634 | && ro->path.type != OSPF6_PATH_TYPE_EXTERNAL1 | |
635 | && ro->path.type != OSPF6_PATH_TYPE_EXTERNAL2) | |
636 | continue; | |
637 | if (!CHECK_FLAG(range->flag, OSPF6_ROUTE_NSSA_RANGE) | |
638 | && ro->path.type != OSPF6_PATH_TYPE_INTRA) | |
639 | continue; | |
640 | ||
641 | cost = MAX(cost, ro->path.cost); | |
d62a17ae | 642 | } |
643 | ||
644 | return cost; | |
ca1f4309 DS |
645 | } |
646 | ||
647 | static inline int | |
d7c0a89a | 648 | ospf6_abr_range_summary_needs_update(struct ospf6_route *range, uint32_t cost) |
ca1f4309 | 649 | { |
d62a17ae | 650 | int redo_summary = 0; |
651 | ||
652 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_REMOVE)) { | |
653 | UNSET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
654 | redo_summary = 1; | |
655 | } else if (CHECK_FLAG(range->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE)) { | |
656 | if (range->path.cost != 0) { | |
657 | range->path.cost = 0; | |
658 | redo_summary = 1; | |
659 | } | |
660 | } else if (cost) { | |
661 | if ((OSPF6_PATH_COST_IS_CONFIGURED(range->path) | |
662 | && range->path.cost != range->path.u.cost_config)) { | |
663 | range->path.cost = range->path.u.cost_config; | |
664 | SET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
665 | redo_summary = 1; | |
666 | } else if (!OSPF6_PATH_COST_IS_CONFIGURED(range->path) | |
667 | && range->path.cost != cost) { | |
668 | range->path.cost = cost; | |
669 | SET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
670 | redo_summary = 1; | |
671 | } | |
672 | } else if (CHECK_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY)) { | |
673 | /* Cost is zero, meaning no active range */ | |
674 | UNSET_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY); | |
675 | range->path.cost = OSPF_AREA_RANGE_COST_UNSPEC; | |
676 | redo_summary = 1; | |
c3c0ac83 | 677 | } |
d62a17ae | 678 | |
679 | return (redo_summary); | |
ca1f4309 DS |
680 | } |
681 | ||
ad500b22 | 682 | void ospf6_abr_range_update(struct ospf6_route *range, struct ospf6 *ospf6) |
ca1f4309 | 683 | { |
d7c0a89a | 684 | uint32_t cost = 0; |
d62a17ae | 685 | struct listnode *node, *nnode; |
686 | struct ospf6_area *oa; | |
687 | int summary_orig = 0; | |
688 | ||
689 | assert(range->type == OSPF6_DEST_TYPE_RANGE); | |
3c77bc80 RW |
690 | oa = ospf6_area_lookup(range->path.area_id, ospf6); |
691 | assert(oa); | |
d62a17ae | 692 | |
693 | /* update range's cost and active flag */ | |
694 | cost = ospf6_abr_range_compute_cost(range, ospf6); | |
695 | ||
ad500b22 K |
696 | if (IS_OSPF6_DEBUG_ABR) |
697 | zlog_debug("%s: range %pFX, cost %d", __func__, &range->prefix, | |
698 | cost); | |
699 | ||
d62a17ae | 700 | /* Non-zero cost is a proxy for active longer prefixes in this range. |
701 | * If there are active routes covered by this range AND either the | |
702 | * configured | |
703 | * cost has changed or the summarized cost has changed then redo | |
704 | * summaries. | |
705 | * Alternately, if there are no longer active prefixes and there are | |
706 | * summary announcements, withdraw those announcements. | |
707 | * | |
708 | * The don't advertise code relies on the path.cost being set to UNSPEC | |
709 | * to | |
710 | * work the first time. Subsequent times the path.cost is not 0 anyway | |
711 | * if there | |
712 | * were active ranges. | |
713 | */ | |
8ee9d58b RW |
714 | if (!ospf6_abr_range_summary_needs_update(range, cost)) |
715 | return; | |
d62a17ae | 716 | |
8ee9d58b RW |
717 | if (IS_OSPF6_DEBUG_ABR) |
718 | zlog_debug("%s: range %pFX update", __func__, &range->prefix); | |
719 | ||
3c77bc80 RW |
720 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_NSSA_RANGE)) { |
721 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY) | |
722 | && !CHECK_FLAG(range->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE)) { | |
723 | ospf6_nssa_lsa_originate(range, oa, true); | |
724 | summary_orig = 1; | |
725 | } else { | |
726 | struct ospf6_lsa *lsa; | |
727 | ||
728 | lsa = ospf6_lsdb_lookup(range->path.origin.type, | |
729 | range->path.origin.id, | |
730 | ospf6->router_id, oa->lsdb); | |
731 | if (lsa) | |
732 | ospf6_lsa_premature_aging(lsa); | |
733 | } | |
734 | } else { | |
735 | for (ALL_LIST_ELEMENTS(ospf6->area_list, node, nnode, oa)) { | |
d62a17ae | 736 | summary_orig += |
737 | ospf6_abr_originate_summary_to_area(range, oa); | |
3c77bc80 RW |
738 | } |
739 | } | |
d62a17ae | 740 | |
8ee9d58b RW |
741 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY) |
742 | && summary_orig) { | |
743 | if (!CHECK_FLAG(range->flag, OSPF6_ROUTE_BLACKHOLE_ADDED)) { | |
744 | if (IS_OSPF6_DEBUG_ABR) | |
745 | zlog_debug("Add discard route"); | |
d62a17ae | 746 | |
8ee9d58b RW |
747 | ospf6_zebra_add_discard(range, ospf6); |
748 | } | |
749 | } else { | |
750 | /* Summary removed or no summary generated as no | |
751 | * specifics exist */ | |
752 | if (CHECK_FLAG(range->flag, OSPF6_ROUTE_BLACKHOLE_ADDED)) { | |
753 | if (IS_OSPF6_DEBUG_ABR) | |
754 | zlog_debug("Delete discard route"); | |
755 | ||
756 | ospf6_zebra_delete_discard(range, ospf6); | |
d62a17ae | 757 | } |
c3c0ac83 | 758 | } |
049207c3 | 759 | } |
760 | ||
beadc736 | 761 | void ospf6_abr_originate_summary(struct ospf6_route *route, struct ospf6 *ospf6) |
049207c3 | 762 | { |
d62a17ae | 763 | struct listnode *node, *nnode; |
764 | struct ospf6_area *oa; | |
765 | struct ospf6_route *range = NULL; | |
766 | ||
9142948e RW |
767 | if (IS_OSPF6_DEBUG_ABR) { |
768 | char buf[BUFSIZ]; | |
769 | ||
770 | if (route->type == OSPF6_DEST_TYPE_ROUTER) | |
771 | inet_ntop(AF_INET, | |
772 | &ADV_ROUTER_IN_PREFIX(&route->prefix), buf, | |
773 | sizeof(buf)); | |
774 | else | |
775 | prefix2str(&route->prefix, buf, sizeof(buf)); | |
776 | ||
777 | zlog_debug("%s: route %s", __func__, buf); | |
778 | } | |
beadc736 | 779 | |
d62a17ae | 780 | if (route->type == OSPF6_DEST_TYPE_NETWORK) { |
781 | oa = ospf6_area_lookup(route->path.area_id, ospf6); | |
48725111 | 782 | if (!oa) { |
783 | zlog_err("OSPFv6 area lookup failed"); | |
784 | return; | |
785 | } | |
786 | ||
d62a17ae | 787 | range = ospf6_route_lookup_bestmatch(&route->prefix, |
788 | oa->range_table); | |
789 | if (range) { | |
beadc736 | 790 | ospf6_abr_range_update(range, ospf6); |
d62a17ae | 791 | } |
c3c0ac83 | 792 | } |
6452df09 | 793 | |
d62a17ae | 794 | for (ALL_LIST_ELEMENTS(ospf6->area_list, node, nnode, oa)) |
795 | ospf6_abr_originate_summary_to_area(route, oa); | |
049207c3 | 796 | } |
797 | ||
d62a17ae | 798 | void ospf6_abr_defaults_to_stub(struct ospf6 *o) |
ca1f4309 | 799 | { |
d62a17ae | 800 | struct listnode *node, *nnode; |
801 | struct ospf6_area *oa; | |
802 | struct ospf6_route *def, *route; | |
c4122b55 | 803 | int type = DEFAULT_ROUTE; |
d62a17ae | 804 | |
805 | if (!o->backbone) | |
806 | return; | |
5f6635b9 | 807 | |
22813fdb | 808 | def = ospf6_route_create(o); |
d62a17ae | 809 | def->type = OSPF6_DEST_TYPE_NETWORK; |
810 | def->prefix.family = AF_INET6; | |
811 | def->prefix.prefixlen = 0; | |
812 | memset(&def->prefix.u.prefix6, 0, sizeof(struct in6_addr)); | |
813 | def->type = OSPF6_DEST_TYPE_NETWORK; | |
814 | def->path.type = OSPF6_PATH_TYPE_INTER; | |
815 | def->path.subtype = OSPF6_PATH_SUBTYPE_DEFAULT_RT; | |
816 | def->path.area_id = o->backbone->area_id; | |
c4122b55 YR |
817 | def->path.metric_type = metric_type(o, type, 0); |
818 | def->path.cost = metric_value(o, type, 0); | |
d62a17ae | 819 | |
beadc736 | 820 | for (ALL_LIST_ELEMENTS(o->area_list, node, nnode, oa)) { |
8a60820f RW |
821 | if (IS_AREA_STUB(oa) || (IS_AREA_NSSA(oa) && oa->no_summary)) { |
822 | /* announce defaults to stubby areas */ | |
823 | if (IS_OSPF6_DEBUG_ABR) | |
824 | zlog_debug( | |
825 | "Announcing default route into stubby area %s", | |
826 | oa->name); | |
827 | UNSET_FLAG(def->flag, OSPF6_ROUTE_REMOVE); | |
828 | ospf6_abr_originate_summary_to_area(def, oa); | |
829 | } else { | |
d62a17ae | 830 | /* withdraw defaults when an area switches from stub to |
831 | * non-stub */ | |
832 | route = ospf6_route_lookup(&def->prefix, | |
833 | oa->summary_prefix); | |
834 | if (route | |
835 | && (route->path.subtype == def->path.subtype)) { | |
836 | if (IS_OSPF6_DEBUG_ABR) | |
837 | zlog_debug( | |
838 | "Withdrawing default route from non-stubby area %s", | |
839 | oa->name); | |
840 | SET_FLAG(def->flag, OSPF6_ROUTE_REMOVE); | |
841 | ospf6_abr_originate_summary_to_area(def, oa); | |
842 | } | |
d62a17ae | 843 | } |
ca1f4309 | 844 | } |
d62a17ae | 845 | ospf6_route_delete(def); |
ca1f4309 DS |
846 | } |
847 | ||
6f19bb0e CS |
848 | void ospf6_abr_old_path_update(struct ospf6_route *old_route, |
849 | struct ospf6_route *route, | |
e285b70d | 850 | struct ospf6_route_table *table) |
6f19bb0e CS |
851 | { |
852 | struct ospf6_path *o_path = NULL; | |
853 | struct listnode *anode, *anext; | |
854 | struct listnode *nnode, *rnode, *rnext; | |
855 | struct ospf6_nexthop *nh, *rnh; | |
856 | ||
857 | for (ALL_LIST_ELEMENTS(old_route->paths, anode, anext, o_path)) { | |
bc465fb6 MN |
858 | if (o_path->area_id != route->path.area_id |
859 | || !ospf6_ls_origin_same(o_path, &route->path)) | |
6f19bb0e CS |
860 | continue; |
861 | ||
862 | if ((o_path->cost == route->path.cost) && | |
863 | (o_path->u.cost_e2 == route->path.u.cost_e2)) | |
864 | continue; | |
865 | ||
866 | for (ALL_LIST_ELEMENTS_RO(o_path->nh_list, nnode, nh)) { | |
867 | for (ALL_LIST_ELEMENTS(old_route->nh_list, rnode, | |
868 | rnext, rnh)) { | |
869 | if (!ospf6_nexthop_is_same(rnh, nh)) | |
870 | continue; | |
871 | listnode_delete(old_route->nh_list, rnh); | |
872 | ospf6_nexthop_delete(rnh); | |
873 | } | |
874 | ||
875 | } | |
876 | ||
877 | listnode_delete(old_route->paths, o_path); | |
878 | ospf6_path_free(o_path); | |
879 | ||
880 | for (ALL_LIST_ELEMENTS(old_route->paths, anode, | |
881 | anext, o_path)) { | |
882 | ospf6_merge_nexthops(old_route->nh_list, | |
883 | o_path->nh_list); | |
884 | } | |
885 | ||
886 | if (IS_OSPF6_DEBUG_ABR || IS_OSPF6_DEBUG_EXAMIN(INTER_PREFIX)) | |
5e81f5dd DS |
887 | zlog_debug("%s: paths %u nh %u", __func__, |
888 | old_route->paths | |
889 | ? listcount(old_route->paths) | |
890 | : 0, | |
891 | old_route->nh_list | |
892 | ? listcount(old_route->nh_list) | |
893 | : 0); | |
6f19bb0e CS |
894 | |
895 | if (table->hook_add) | |
e285b70d | 896 | (*table->hook_add)(old_route); |
6f19bb0e CS |
897 | |
898 | if (old_route->path.origin.id == route->path.origin.id && | |
899 | old_route->path.origin.adv_router == | |
900 | route->path.origin.adv_router) { | |
901 | struct ospf6_path *h_path; | |
902 | ||
903 | h_path = (struct ospf6_path *) | |
904 | listgetdata(listhead(old_route->paths)); | |
905 | old_route->path.origin.type = h_path->origin.type; | |
906 | old_route->path.origin.id = h_path->origin.id; | |
907 | old_route->path.origin.adv_router = | |
908 | h_path->origin.adv_router; | |
909 | } | |
910 | } | |
911 | } | |
912 | ||
beadc736 | 913 | void ospf6_abr_old_route_remove(struct ospf6_lsa *lsa, struct ospf6_route *old, |
e285b70d | 914 | struct ospf6_route_table *table) |
6f19bb0e | 915 | { |
b9b87bfc S |
916 | if (IS_OSPF6_DEBUG_ABR) |
917 | zlog_debug("%s: route %pFX, paths %d", __func__, &old->prefix, | |
918 | listcount(old->paths)); | |
919 | ||
6f19bb0e CS |
920 | if (listcount(old->paths) > 1) { |
921 | struct listnode *anode, *anext, *nnode, *rnode, *rnext; | |
922 | struct ospf6_path *o_path; | |
923 | struct ospf6_nexthop *nh, *rnh; | |
924 | bool nh_updated = false; | |
6f19bb0e CS |
925 | |
926 | for (ALL_LIST_ELEMENTS(old->paths, anode, anext, o_path)) { | |
927 | if (o_path->origin.adv_router != lsa->header->adv_router | |
b9b87bfc | 928 | || o_path->origin.id != lsa->header->id) |
6f19bb0e CS |
929 | continue; |
930 | for (ALL_LIST_ELEMENTS_RO(o_path->nh_list, nnode, nh)) { | |
931 | for (ALL_LIST_ELEMENTS(old->nh_list, | |
932 | rnode, rnext, rnh)) { | |
933 | if (!ospf6_nexthop_is_same(rnh, nh)) | |
934 | continue; | |
b9b87bfc S |
935 | if (IS_OSPF6_DEBUG_ABR) |
936 | zlog_debug("deleted nexthop"); | |
6f19bb0e CS |
937 | listnode_delete(old->nh_list, rnh); |
938 | ospf6_nexthop_delete(rnh); | |
939 | } | |
940 | } | |
941 | listnode_delete(old->paths, o_path); | |
942 | ospf6_path_free(o_path); | |
943 | nh_updated = true; | |
944 | } | |
945 | ||
946 | if (nh_updated) { | |
947 | if (listcount(old->paths)) { | |
2dbe669b DA |
948 | if (IS_OSPF6_DEBUG_ABR |
949 | || IS_OSPF6_DEBUG_EXAMIN(INTER_PREFIX)) | |
950 | zlog_debug("%s: old %pFX updated nh %u", | |
951 | __func__, &old->prefix, | |
5e81f5dd DS |
952 | old->nh_list ? listcount( |
953 | old->nh_list) | |
954 | : 0); | |
6f19bb0e CS |
955 | |
956 | if (table->hook_add) | |
e285b70d | 957 | (*table->hook_add)(old); |
6f19bb0e CS |
958 | |
959 | if ((old->path.origin.id == lsa->header->id) && | |
960 | (old->path.origin.adv_router | |
961 | == lsa->header->adv_router)) { | |
962 | struct ospf6_path *h_path; | |
963 | ||
964 | h_path = (struct ospf6_path *) | |
965 | listgetdata( | |
966 | listhead(old->paths)); | |
967 | old->path.origin.type = | |
968 | h_path->origin.type; | |
969 | old->path.origin.id = h_path->origin.id; | |
970 | old->path.origin.adv_router = | |
971 | h_path->origin.adv_router; | |
972 | } | |
973 | } else | |
e285b70d | 974 | ospf6_route_remove(old, table); |
6f19bb0e CS |
975 | } |
976 | } else | |
e285b70d | 977 | ospf6_route_remove(old, table); |
6f19bb0e CS |
978 | } |
979 | ||
049207c3 | 980 | /* RFC 2328 16.2. Calculating the inter-area routes */ |
d62a17ae | 981 | void ospf6_abr_examin_summary(struct ospf6_lsa *lsa, struct ospf6_area *oa) |
049207c3 | 982 | { |
d62a17ae | 983 | struct prefix prefix, abr_prefix; |
984 | struct ospf6_route_table *table = NULL; | |
99ab28cb | 985 | struct ospf6_route *range, *route, *old = NULL, *old_route; |
d62a17ae | 986 | struct ospf6_route *abr_entry; |
d7c0a89a | 987 | uint8_t type = 0; |
d62a17ae | 988 | char options[3] = {0, 0, 0}; |
d7c0a89a QY |
989 | uint8_t prefix_options = 0; |
990 | uint32_t cost = 0; | |
991 | uint8_t router_bits = 0; | |
d62a17ae | 992 | char buf[PREFIX2STR_BUFFER]; |
993 | int is_debug = 0; | |
994 | struct ospf6_inter_prefix_lsa *prefix_lsa = NULL; | |
995 | struct ospf6_inter_router_lsa *router_lsa = NULL; | |
99ab28cb | 996 | bool old_entry_updated = false; |
6f19bb0e CS |
997 | struct ospf6_path *path, *o_path, *ecmp_path; |
998 | struct listnode *anode; | |
b9b87bfc | 999 | bool add_route = false; |
d62a17ae | 1000 | |
1001 | memset(&prefix, 0, sizeof(prefix)); | |
1002 | ||
1003 | if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_PREFIX)) { | |
1004 | if (IS_OSPF6_DEBUG_EXAMIN(INTER_PREFIX)) { | |
1005 | is_debug++; | |
b9b87bfc S |
1006 | zlog_debug("%s: LSA %s age %d in area %s", __func__, |
1007 | lsa->name, ospf6_lsa_age_current(lsa), | |
1008 | oa->name); | |
d62a17ae | 1009 | } |
1010 | ||
1011 | prefix_lsa = | |
1012 | (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( | |
1013 | lsa->header); | |
1014 | prefix.family = AF_INET6; | |
1015 | prefix.prefixlen = prefix_lsa->prefix.prefix_length; | |
b8ce0c36 | 1016 | ospf6_prefix_in6_addr(&prefix.u.prefix6, prefix_lsa, |
1017 | &prefix_lsa->prefix); | |
d62a17ae | 1018 | if (is_debug) |
1019 | prefix2str(&prefix, buf, sizeof(buf)); | |
1020 | table = oa->ospf6->route_table; | |
1021 | type = OSPF6_DEST_TYPE_NETWORK; | |
1022 | prefix_options = prefix_lsa->prefix.prefix_options; | |
1023 | cost = OSPF6_ABR_SUMMARY_METRIC(prefix_lsa); | |
1024 | } else if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_ROUTER)) { | |
1025 | if (IS_OSPF6_DEBUG_EXAMIN(INTER_ROUTER)) { | |
1026 | is_debug++; | |
b9b87bfc S |
1027 | zlog_debug("%s: LSA %s age %d in area %s", __func__, |
1028 | lsa->name, ospf6_lsa_age_current(lsa), | |
1029 | oa->name); | |
d62a17ae | 1030 | } |
1031 | ||
1032 | router_lsa = | |
1033 | (struct ospf6_inter_router_lsa *)OSPF6_LSA_HEADER_END( | |
1034 | lsa->header); | |
1035 | ospf6_linkstate_prefix(router_lsa->router_id, htonl(0), | |
1036 | &prefix); | |
1037 | if (is_debug) | |
1038 | inet_ntop(AF_INET, &router_lsa->router_id, buf, | |
1039 | sizeof(buf)); | |
1040 | ||
1041 | table = oa->ospf6->brouter_table; | |
1042 | type = OSPF6_DEST_TYPE_ROUTER; | |
1043 | options[0] = router_lsa->options[0]; | |
1044 | options[1] = router_lsa->options[1]; | |
1045 | options[2] = router_lsa->options[2]; | |
1046 | cost = OSPF6_ABR_SUMMARY_METRIC(router_lsa); | |
1047 | SET_FLAG(router_bits, OSPF6_ROUTER_BIT_E); | |
1048 | } else | |
1049 | assert(0); | |
1050 | ||
1051 | /* Find existing route */ | |
1052 | route = ospf6_route_lookup(&prefix, table); | |
b9b87bfc | 1053 | if (route) { |
d62a17ae | 1054 | ospf6_route_lock(route); |
b9b87bfc S |
1055 | if (is_debug) |
1056 | zlog_debug("%s: route %pFX, paths %d", __func__, | |
1057 | &prefix, listcount(route->paths)); | |
1058 | } | |
d62a17ae | 1059 | while (route && ospf6_route_is_prefix(&prefix, route)) { |
1060 | if (route->path.area_id == oa->area_id | |
1061 | && route->path.origin.type == lsa->header->type | |
6f19bb0e CS |
1062 | && !CHECK_FLAG(route->flag, OSPF6_ROUTE_WAS_REMOVED)) { |
1063 | /* LSA adv. router could be part of route's | |
1064 | * paths list. Find the existing path and set | |
1065 | * old as the route. | |
1066 | */ | |
1067 | if (listcount(route->paths) > 1) { | |
6f19bb0e CS |
1068 | for (ALL_LIST_ELEMENTS_RO(route->paths, anode, |
1069 | o_path)) { | |
6f19bb0e CS |
1070 | if (o_path->origin.id == lsa->header->id |
1071 | && o_path->origin.adv_router == | |
1072 | lsa->header->adv_router) { | |
1073 | old = route; | |
1074 | ||
1075 | if (is_debug) | |
5e81f5dd | 1076 | zlog_debug( |
dc138868 | 1077 | "%s: old entry found in paths, adv_router %pI4", |
5e81f5dd | 1078 | __func__, |
dc138868 | 1079 | &o_path->origin.adv_router); |
6f19bb0e CS |
1080 | |
1081 | break; | |
1082 | } | |
1083 | } | |
1084 | } else if (route->path.origin.id == lsa->header->id && | |
1085 | route->path.origin.adv_router == | |
1086 | lsa->header->adv_router) | |
1087 | old = route; | |
1088 | } | |
d62a17ae | 1089 | route = ospf6_route_next(route); |
1090 | } | |
1091 | if (route) | |
1092 | ospf6_route_unlock(route); | |
1093 | ||
1094 | /* (1) if cost == LSInfinity or if the LSA is MaxAge */ | |
1095 | if (cost == OSPF_LS_INFINITY) { | |
1096 | if (is_debug) | |
1097 | zlog_debug("cost is LS_INFINITY, ignore"); | |
1098 | if (old) | |
e285b70d | 1099 | ospf6_abr_old_route_remove(lsa, old, table); |
d62a17ae | 1100 | return; |
1101 | } | |
1102 | if (OSPF6_LSA_IS_MAXAGE(lsa)) { | |
1103 | if (is_debug) | |
5e81f5dd DS |
1104 | zlog_debug("%s: LSA %s is MaxAge, ignore", __func__, |
1105 | lsa->name); | |
d62a17ae | 1106 | if (old) |
e285b70d | 1107 | ospf6_abr_old_route_remove(lsa, old, table); |
d62a17ae | 1108 | return; |
1109 | } | |
1110 | ||
b9b87bfc | 1111 | |
d62a17ae | 1112 | /* (2) if the LSA is self-originated, ignore */ |
1113 | if (lsa->header->adv_router == oa->ospf6->router_id) { | |
1114 | if (is_debug) | |
6f19bb0e CS |
1115 | zlog_debug("LSA %s is self-originated, ignore", |
1116 | lsa->name); | |
d62a17ae | 1117 | if (old) |
e285b70d | 1118 | ospf6_route_remove(old, table); |
d62a17ae | 1119 | return; |
01879114 | 1120 | } |
d62a17ae | 1121 | |
1122 | /* (3) if the prefix is equal to an active configured address range */ | |
1123 | /* or if the NU bit is set in the prefix */ | |
1124 | if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_PREFIX)) { | |
8934b81c QY |
1125 | /* must have been set in previous block */ |
1126 | assert(prefix_lsa); | |
1127 | ||
d62a17ae | 1128 | range = ospf6_route_lookup(&prefix, oa->range_table); |
1129 | if (range) { | |
1130 | if (is_debug) | |
1131 | zlog_debug( | |
1132 | "Prefix is equal to address range, ignore"); | |
1133 | if (old) | |
e285b70d | 1134 | ospf6_route_remove(old, table); |
d62a17ae | 1135 | return; |
1136 | } | |
1137 | ||
1138 | if (CHECK_FLAG(prefix_lsa->prefix.prefix_options, | |
1139 | OSPF6_PREFIX_OPTION_NU) | |
1140 | || CHECK_FLAG(prefix_lsa->prefix.prefix_options, | |
1141 | OSPF6_PREFIX_OPTION_LA)) { | |
1142 | if (is_debug) | |
1143 | zlog_debug("Prefix has NU/LA bit set, ignore"); | |
1144 | if (old) | |
e285b70d | 1145 | ospf6_route_remove(old, table); |
d62a17ae | 1146 | return; |
1147 | } | |
01879114 | 1148 | } |
d62a17ae | 1149 | |
1150 | if (lsa->header->type == htons(OSPF6_LSTYPE_INTER_ROUTER)) { | |
1151 | /* To pass test suites */ | |
554bfe88 | 1152 | assert(router_lsa); |
d62a17ae | 1153 | if (!OSPF6_OPT_ISSET(router_lsa->options, OSPF6_OPT_R) |
1154 | || !OSPF6_OPT_ISSET(router_lsa->options, OSPF6_OPT_V6)) { | |
1155 | if (is_debug) | |
1156 | zlog_debug("Prefix has NU/LA bit set, ignore"); | |
1157 | if (old) | |
e285b70d | 1158 | ospf6_route_remove(old, table); |
d62a17ae | 1159 | |
1160 | return; | |
1161 | } | |
1162 | /* Avoid infinite recursion if someone has maliciously announced | |
1163 | an | |
1164 | Inter-Router LSA for an ABR | |
1165 | */ | |
1166 | if (lsa->header->adv_router == router_lsa->router_id) { | |
1167 | if (is_debug) | |
1168 | zlog_debug( | |
416721d9 | 1169 | "Ignoring Inter-Router LSA for an ABR (%s)", |
d62a17ae | 1170 | buf); |
1171 | if (old) | |
e285b70d | 1172 | ospf6_route_remove(old, table); |
d62a17ae | 1173 | |
1174 | return; | |
1175 | } | |
1176 | } | |
1177 | ||
1178 | /* (4) if the routing table entry for the ABR does not exist */ | |
1179 | ospf6_linkstate_prefix(lsa->header->adv_router, htonl(0), &abr_prefix); | |
1180 | abr_entry = ospf6_route_lookup(&abr_prefix, oa->ospf6->brouter_table); | |
1181 | if (abr_entry == NULL || abr_entry->path.area_id != oa->area_id | |
1182 | || CHECK_FLAG(abr_entry->flag, OSPF6_ROUTE_REMOVE) | |
1183 | || !CHECK_FLAG(abr_entry->path.router_bits, OSPF6_ROUTER_BIT_B)) { | |
1184 | if (is_debug) | |
5e81f5dd | 1185 | zlog_debug( |
b9b87bfc S |
1186 | "%s: ABR router entry %pFX does not exist, ignore", |
1187 | __func__, &abr_prefix); | |
a2d0055a CS |
1188 | if (old) { |
1189 | if (old->type == OSPF6_DEST_TYPE_ROUTER && | |
1190 | oa->intra_brouter_calc) { | |
1191 | if (is_debug) | |
1192 | zlog_debug( | |
5e81f5dd DS |
1193 | "%s: intra_brouter_calc is on, skip brouter remove: %s (%p)", |
1194 | __func__, buf, (void *)old); | |
a2d0055a CS |
1195 | } else { |
1196 | if (is_debug) | |
5e81f5dd DS |
1197 | zlog_debug( |
1198 | "%s: remove old entry: %s %p ", | |
1199 | __func__, buf, (void *)old); | |
b9b87bfc | 1200 | ospf6_abr_old_route_remove(lsa, old, table); |
a2d0055a CS |
1201 | } |
1202 | } | |
d62a17ae | 1203 | return; |
1204 | } | |
1205 | ||
d62a17ae | 1206 | /* (5),(6): the path preference is handled by the sorting |
1207 | in the routing table. Always install the path by substituting | |
1208 | old route (if any). */ | |
22813fdb | 1209 | route = ospf6_route_create(oa->ospf6); |
d62a17ae | 1210 | |
1211 | route->type = type; | |
1212 | route->prefix = prefix; | |
4699ad72 | 1213 | route->prefix_options = prefix_options; |
d62a17ae | 1214 | route->path.origin.type = lsa->header->type; |
1215 | route->path.origin.id = lsa->header->id; | |
1216 | route->path.origin.adv_router = lsa->header->adv_router; | |
1217 | route->path.router_bits = router_bits; | |
1218 | route->path.options[0] = options[0]; | |
1219 | route->path.options[1] = options[1]; | |
1220 | route->path.options[2] = options[2]; | |
d62a17ae | 1221 | route->path.area_id = oa->area_id; |
1222 | route->path.type = OSPF6_PATH_TYPE_INTER; | |
1223 | route->path.cost = abr_entry->path.cost + cost; | |
1224 | ||
6f19bb0e CS |
1225 | /* copy brouter rechable nexthops into the route. */ |
1226 | ospf6_route_copy_nexthops(route, abr_entry); | |
064d4355 | 1227 | |
d62a17ae | 1228 | /* (7) If the routes are identical, copy the next hops over to existing |
1229 | route. ospf6's route table implementation will otherwise string both | |
1230 | routes, but keep the older one as the best route since the routes | |
1231 | are identical. | |
1232 | */ | |
1233 | old = ospf6_route_lookup(&prefix, table); | |
b9b87bfc S |
1234 | if (old) { |
1235 | if (is_debug) | |
1236 | zlog_debug("%s: found old route %pFX, paths %d", | |
1237 | __func__, &prefix, listcount(old->paths)); | |
1238 | } | |
99ab28cb | 1239 | for (old_route = old; old_route; old_route = old_route->next) { |
0c7f982a PR |
1240 | |
1241 | /* The route linked-list is grouped in batches of prefix. | |
1242 | * If the new prefix is not the same as the one of interest | |
1243 | * then we have walked over the end of the batch and so we | |
1244 | * should break rather than continuing unnecessarily. | |
1245 | */ | |
1246 | if (!ospf6_route_is_same(old_route, route)) | |
1247 | break; | |
1248 | if ((old_route->type != route->type) | |
1249 | || (old_route->path.type != route->path.type)) | |
99ab28cb | 1250 | continue; |
064d4355 | 1251 | |
99ab28cb | 1252 | if ((ospf6_route_cmp(route, old_route) != 0)) { |
2dbe669b | 1253 | if (is_debug) |
5e81f5dd | 1254 | zlog_debug( |
2dbe669b DA |
1255 | "%s: old %p %pFX cost %u new route cost %u are not same", |
1256 | __func__, (void *)old_route, &prefix, | |
5e81f5dd | 1257 | old_route->path.cost, route->path.cost); |
6f19bb0e CS |
1258 | |
1259 | /* Check new route's adv. router is same in one of | |
1260 | * the paths with differed cost, if so remove the | |
1261 | * old path as later new route will be added. | |
1262 | */ | |
1263 | if (listcount(old_route->paths) > 1) | |
1264 | ospf6_abr_old_path_update(old_route, route, | |
e285b70d | 1265 | table); |
99ab28cb CS |
1266 | continue; |
1267 | } | |
1268 | ||
b74e9651 MB |
1269 | list_delete_all_node(old_route->nh_list); |
1270 | ospf6_route_copy_nexthops(old_route, route); | |
99ab28cb | 1271 | old_entry_updated = true; |
6f19bb0e CS |
1272 | |
1273 | for (ALL_LIST_ELEMENTS_RO(old_route->paths, anode, | |
1274 | o_path)) { | |
bc465fb6 MN |
1275 | if (o_path->area_id == route->path.area_id |
1276 | && ospf6_ls_origin_same(o_path, &route->path)) | |
6f19bb0e CS |
1277 | break; |
1278 | } | |
1279 | ||
1280 | /* New adv. router for a existing path add to paths list */ | |
1281 | if (o_path == NULL) { | |
1282 | ecmp_path = ospf6_path_dup(&route->path); | |
1283 | ||
1284 | /* Add a nh_list to new ecmp path */ | |
1285 | ospf6_copy_nexthops(ecmp_path->nh_list, route->nh_list); | |
1286 | ||
1287 | /* Add the new path to route's path list */ | |
1288 | listnode_add_sort(old_route->paths, ecmp_path); | |
1289 | ||
1290 | if (is_debug) { | |
5e81f5dd | 1291 | zlog_debug( |
dc138868 DL |
1292 | "%s: route %pFX cost %u another path %pI4 added with nh %u, effective paths %u nh %u", |
1293 | __func__, &route->prefix, | |
1294 | old_route->path.cost, | |
1295 | &ecmp_path->origin.adv_router, | |
5e81f5dd DS |
1296 | listcount(ecmp_path->nh_list), |
1297 | old_route->paths | |
1298 | ? listcount(old_route->paths) | |
1299 | : 0, | |
1300 | listcount(old_route->nh_list)); | |
6f19bb0e CS |
1301 | } |
1302 | } else { | |
22813fdb MR |
1303 | struct ospf6_route *tmp_route; |
1304 | ||
1305 | tmp_route = ospf6_route_create(oa->ospf6); | |
14ff96e6 DS |
1306 | |
1307 | ospf6_copy_nexthops(tmp_route->nh_list, | |
1308 | o_path->nh_list); | |
1309 | ||
8f1bf687 | 1310 | if (!ospf6_route_cmp_nexthops(tmp_route, route)) { |
14ff96e6 DS |
1311 | /* adv. router exists in the list, update nhs */ |
1312 | list_delete_all_node(o_path->nh_list); | |
1313 | ospf6_copy_nexthops(o_path->nh_list, | |
1314 | route->nh_list); | |
1315 | ospf6_route_delete(tmp_route); | |
1316 | } else { | |
1317 | /* adv. router has no change in nhs */ | |
1318 | old_entry_updated = false; | |
1319 | ospf6_route_delete(tmp_route); | |
1320 | continue; | |
1321 | } | |
6f19bb0e CS |
1322 | } |
1323 | ||
064d4355 | 1324 | if (is_debug) |
5e81f5dd DS |
1325 | zlog_debug( |
1326 | "%s: Update route: %s %p old cost %u new cost %u nh %u", | |
1327 | __func__, buf, (void *)old_route, | |
1328 | old_route->path.cost, route->path.cost, | |
b9b87bfc | 1329 | listcount(old_route->nh_list)); |
064d4355 | 1330 | |
6f19bb0e CS |
1331 | /* For Inter-Prefix route: Update RIB/FIB, |
1332 | * For Inter-Router trigger summary update | |
1333 | */ | |
d62a17ae | 1334 | if (table->hook_add) |
e285b70d | 1335 | (*table->hook_add)(old_route); |
d62a17ae | 1336 | |
99ab28cb CS |
1337 | break; |
1338 | } | |
1339 | ||
b9b87bfc S |
1340 | /* If the old entry is not updated and old entry not found or old entry |
1341 | * does not match with the new entry then add the new route | |
1342 | */ | |
99ab28cb | 1343 | if (old_entry_updated == false) { |
b9b87bfc | 1344 | if ((old == NULL) || (old->type != route->type) |
d8ff3709 KS |
1345 | || (old->path.type != route->path.type) |
1346 | || (old->path.cost != route->path.cost)) | |
b9b87bfc S |
1347 | add_route = true; |
1348 | } | |
1349 | ||
1350 | if (add_route) { | |
6f19bb0e | 1351 | if (is_debug) { |
5e81f5dd | 1352 | zlog_debug( |
b9b87bfc | 1353 | "%s: Install new route: %s cost %u nh %u adv_router %pI4", |
5e81f5dd | 1354 | __func__, buf, route->path.cost, |
dc138868 DL |
1355 | listcount(route->nh_list), |
1356 | &route->path.origin.adv_router); | |
6f19bb0e CS |
1357 | } |
1358 | ||
1359 | path = ospf6_path_dup(&route->path); | |
1360 | ospf6_copy_nexthops(path->nh_list, abr_entry->nh_list); | |
1361 | listnode_add_sort(route->paths, path); | |
d62a17ae | 1362 | /* ospf6_ia_add_nw_route (table, &prefix, route); */ |
e285b70d | 1363 | ospf6_route_add(route, table); |
de4a0bda PR |
1364 | } else |
1365 | /* if we did not add the route remove it */ | |
1366 | ospf6_route_delete(route); | |
049207c3 | 1367 | } |
1368 | ||
beadc736 | 1369 | void ospf6_abr_examin_brouter(uint32_t router_id, struct ospf6_route *route, |
1370 | struct ospf6 *ospf6) | |
ccb59b11 | 1371 | { |
d62a17ae | 1372 | struct ospf6_lsa *lsa; |
1373 | struct ospf6_area *oa; | |
d7c0a89a | 1374 | uint16_t type; |
d62a17ae | 1375 | |
beadc736 | 1376 | oa = ospf6_area_lookup(route->path.area_id, ospf6); |
d62a17ae | 1377 | /* |
1378 | * It is possible to designate a non backbone | |
1379 | * area first. If that is the case safely | |
1380 | * fall out of this function. | |
1381 | */ | |
1382 | if (oa == NULL) | |
1383 | return; | |
1384 | ||
1385 | type = htons(OSPF6_LSTYPE_INTER_ROUTER); | |
1386 | for (ALL_LSDB_TYPED_ADVRTR(oa->lsdb, type, router_id, lsa)) | |
1387 | ospf6_abr_examin_summary(lsa, oa); | |
1388 | ||
1389 | type = htons(OSPF6_LSTYPE_INTER_PREFIX); | |
1390 | for (ALL_LSDB_TYPED_ADVRTR(oa->lsdb, type, router_id, lsa)) | |
1391 | ospf6_abr_examin_summary(lsa, oa); | |
ccb59b11 | 1392 | } |
1393 | ||
d62a17ae | 1394 | void ospf6_abr_prefix_resummarize(struct ospf6 *o) |
ca1f4309 | 1395 | { |
d62a17ae | 1396 | struct ospf6_route *route; |
ca1f4309 | 1397 | |
d62a17ae | 1398 | if (IS_OSPF6_DEBUG_ABR) |
1399 | zlog_debug("Re-examining Inter-Prefix Summaries"); | |
ca1f4309 | 1400 | |
d62a17ae | 1401 | for (route = ospf6_route_head(o->route_table); route; |
1402 | route = ospf6_route_next(route)) | |
beadc736 | 1403 | ospf6_abr_originate_summary(route, o); |
ca1f4309 | 1404 | |
d62a17ae | 1405 | if (IS_OSPF6_DEBUG_ABR) |
1406 | zlog_debug("Finished re-examining Inter-Prefix Summaries"); | |
ca1f4309 | 1407 | } |
34956b31 | 1408 | |
6b0655a2 | 1409 | |
049207c3 | 1410 | /* Display functions */ |
d62a17ae | 1411 | static char *ospf6_inter_area_prefix_lsa_get_prefix_str(struct ospf6_lsa *lsa, |
1412 | char *buf, int buflen, | |
1413 | int pos) | |
e68a6767 | 1414 | { |
d62a17ae | 1415 | struct ospf6_inter_prefix_lsa *prefix_lsa; |
1416 | struct in6_addr in6; | |
7533cad7 | 1417 | char tbuf[16]; |
d62a17ae | 1418 | |
1419 | if (lsa != NULL) { | |
1420 | prefix_lsa = | |
1421 | (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( | |
1422 | lsa->header); | |
1423 | ||
b8ce0c36 | 1424 | ospf6_prefix_in6_addr(&in6, prefix_lsa, &prefix_lsa->prefix); |
d62a17ae | 1425 | if (buf) { |
1426 | inet_ntop(AF_INET6, &in6, buf, buflen); | |
7533cad7 QY |
1427 | snprintf(tbuf, sizeof(tbuf), "/%d", |
1428 | prefix_lsa->prefix.prefix_length); | |
1429 | strlcat(buf, tbuf, buflen); | |
d62a17ae | 1430 | } |
e68a6767 | 1431 | } |
e68a6767 | 1432 | |
d62a17ae | 1433 | return (buf); |
e68a6767 DD |
1434 | } |
1435 | ||
d62a17ae | 1436 | static int ospf6_inter_area_prefix_lsa_show(struct vty *vty, |
e4bacbaa YR |
1437 | struct ospf6_lsa *lsa, |
1438 | json_object *json_obj, | |
1439 | bool use_json) | |
049207c3 | 1440 | { |
d62a17ae | 1441 | struct ospf6_inter_prefix_lsa *prefix_lsa; |
1442 | char buf[INET6_ADDRSTRLEN]; | |
049207c3 | 1443 | |
d62a17ae | 1444 | prefix_lsa = (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( |
1445 | lsa->header); | |
049207c3 | 1446 | |
e4bacbaa YR |
1447 | if (use_json) { |
1448 | json_object_int_add( | |
1449 | json_obj, "metric", | |
1450 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(prefix_lsa)); | |
1451 | ospf6_prefix_options_printbuf(prefix_lsa->prefix.prefix_options, | |
1452 | buf, sizeof(buf)); | |
1453 | json_object_string_add(json_obj, "prefixOptions", buf); | |
1454 | json_object_string_add( | |
1455 | json_obj, "prefix", | |
1456 | ospf6_inter_area_prefix_lsa_get_prefix_str( | |
1457 | lsa, buf, sizeof(buf), 0)); | |
1458 | } else { | |
1459 | vty_out(vty, " Metric: %lu\n", | |
1460 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(prefix_lsa)); | |
049207c3 | 1461 | |
e4bacbaa YR |
1462 | ospf6_prefix_options_printbuf(prefix_lsa->prefix.prefix_options, |
1463 | buf, sizeof(buf)); | |
1464 | vty_out(vty, " Prefix Options: %s\n", buf); | |
049207c3 | 1465 | |
e4bacbaa YR |
1466 | vty_out(vty, " Prefix: %s\n", |
1467 | ospf6_inter_area_prefix_lsa_get_prefix_str( | |
1468 | lsa, buf, sizeof(buf), 0)); | |
1469 | } | |
049207c3 | 1470 | |
d62a17ae | 1471 | return 0; |
049207c3 | 1472 | } |
1473 | ||
d62a17ae | 1474 | static char *ospf6_inter_area_router_lsa_get_prefix_str(struct ospf6_lsa *lsa, |
1475 | char *buf, int buflen, | |
1476 | int pos) | |
e68a6767 | 1477 | { |
d62a17ae | 1478 | struct ospf6_inter_router_lsa *router_lsa; |
e68a6767 | 1479 | |
d62a17ae | 1480 | if (lsa != NULL) { |
1481 | router_lsa = | |
1482 | (struct ospf6_inter_router_lsa *)OSPF6_LSA_HEADER_END( | |
1483 | lsa->header); | |
e68a6767 DD |
1484 | |
1485 | ||
d62a17ae | 1486 | if (buf) |
1487 | inet_ntop(AF_INET, &router_lsa->router_id, buf, buflen); | |
1488 | } | |
e68a6767 | 1489 | |
d62a17ae | 1490 | return (buf); |
e68a6767 DD |
1491 | } |
1492 | ||
d62a17ae | 1493 | static int ospf6_inter_area_router_lsa_show(struct vty *vty, |
e4bacbaa YR |
1494 | struct ospf6_lsa *lsa, |
1495 | json_object *json_obj, | |
1496 | bool use_json) | |
049207c3 | 1497 | { |
d62a17ae | 1498 | struct ospf6_inter_router_lsa *router_lsa; |
1499 | char buf[64]; | |
049207c3 | 1500 | |
d62a17ae | 1501 | router_lsa = (struct ospf6_inter_router_lsa *)OSPF6_LSA_HEADER_END( |
1502 | lsa->header); | |
049207c3 | 1503 | |
d62a17ae | 1504 | ospf6_options_printbuf(router_lsa->options, buf, sizeof(buf)); |
e4bacbaa YR |
1505 | if (use_json) { |
1506 | json_object_string_add(json_obj, "options", buf); | |
1507 | json_object_int_add( | |
1508 | json_obj, "metric", | |
1509 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(router_lsa)); | |
1510 | } else { | |
1511 | vty_out(vty, " Options: %s\n", buf); | |
1512 | vty_out(vty, " Metric: %lu\n", | |
1513 | (unsigned long)OSPF6_ABR_SUMMARY_METRIC(router_lsa)); | |
1514 | } | |
e68a6767 | 1515 | |
d62a17ae | 1516 | inet_ntop(AF_INET, &router_lsa->router_id, buf, sizeof(buf)); |
e4bacbaa YR |
1517 | if (use_json) |
1518 | json_object_string_add(json_obj, "destinationRouterId", buf); | |
1519 | else | |
1520 | vty_out(vty, " Destination Router ID: %s\n", buf); | |
049207c3 | 1521 | |
d62a17ae | 1522 | return 0; |
049207c3 | 1523 | } |
1524 | ||
1525 | /* Debug commands */ | |
1526 | DEFUN (debug_ospf6_abr, | |
1527 | debug_ospf6_abr_cmd, | |
1528 | "debug ospf6 abr", | |
1529 | DEBUG_STR | |
1530 | OSPF6_STR | |
1531 | "Debug OSPFv3 ABR function\n" | |
1532 | ) | |
1533 | { | |
d62a17ae | 1534 | OSPF6_DEBUG_ABR_ON(); |
1535 | return CMD_SUCCESS; | |
049207c3 | 1536 | } |
1537 | ||
1538 | DEFUN (no_debug_ospf6_abr, | |
1539 | no_debug_ospf6_abr_cmd, | |
1540 | "no debug ospf6 abr", | |
1541 | NO_STR | |
1542 | DEBUG_STR | |
1543 | OSPF6_STR | |
1544 | "Debug OSPFv3 ABR function\n" | |
1545 | ) | |
1546 | { | |
d62a17ae | 1547 | OSPF6_DEBUG_ABR_OFF(); |
1548 | return CMD_SUCCESS; | |
049207c3 | 1549 | } |
1550 | ||
d62a17ae | 1551 | int config_write_ospf6_debug_abr(struct vty *vty) |
049207c3 | 1552 | { |
d62a17ae | 1553 | if (IS_OSPF6_DEBUG_ABR) |
1554 | vty_out(vty, "debug ospf6 abr\n"); | |
1555 | return 0; | |
049207c3 | 1556 | } |
1557 | ||
d62a17ae | 1558 | void install_element_ospf6_debug_abr(void) |
049207c3 | 1559 | { |
d62a17ae | 1560 | install_element(ENABLE_NODE, &debug_ospf6_abr_cmd); |
1561 | install_element(ENABLE_NODE, &no_debug_ospf6_abr_cmd); | |
1562 | install_element(CONFIG_NODE, &debug_ospf6_abr_cmd); | |
1563 | install_element(CONFIG_NODE, &no_debug_ospf6_abr_cmd); | |
049207c3 | 1564 | } |
1565 | ||
4062abfa | 1566 | static struct ospf6_lsa_handler inter_prefix_handler = { |
3981b5c7 VJ |
1567 | .lh_type = OSPF6_LSTYPE_INTER_PREFIX, |
1568 | .lh_name = "Inter-Prefix", | |
1569 | .lh_short_name = "IAP", | |
1570 | .lh_show = ospf6_inter_area_prefix_lsa_show, | |
1571 | .lh_get_prefix_str = ospf6_inter_area_prefix_lsa_get_prefix_str, | |
996c9314 | 1572 | .lh_debug = 0}; |
6452df09 | 1573 | |
4062abfa | 1574 | static struct ospf6_lsa_handler inter_router_handler = { |
3981b5c7 VJ |
1575 | .lh_type = OSPF6_LSTYPE_INTER_ROUTER, |
1576 | .lh_name = "Inter-Router", | |
1577 | .lh_short_name = "IAR", | |
1578 | .lh_show = ospf6_inter_area_router_lsa_show, | |
1579 | .lh_get_prefix_str = ospf6_inter_area_router_lsa_get_prefix_str, | |
996c9314 | 1580 | .lh_debug = 0}; |
6452df09 | 1581 | |
d62a17ae | 1582 | void ospf6_abr_init(void) |
049207c3 | 1583 | { |
d62a17ae | 1584 | ospf6_install_lsa_handler(&inter_prefix_handler); |
1585 | ospf6_install_lsa_handler(&inter_router_handler); | |
049207c3 | 1586 | } |