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1 /*
2 * Copyright (C) 2003 Yasuhiro Ohara
3 *
4 * This file is part of GNU Zebra.
5 *
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <zebra.h>
22
23 #include "log.h"
24 #include "linklist.h"
25 #include "thread.h"
26 #include "memory.h"
27 #include "if.h"
28 #include "prefix.h"
29 #include "table.h"
30 #include "vty.h"
31 #include "command.h"
32 #include "vrf.h"
33
34 #include "ospf6_proto.h"
35 #include "ospf6_message.h"
36 #include "ospf6_route.h"
37 #include "ospf6_lsa.h"
38 #include "ospf6_lsdb.h"
39
40 #include "ospf6_top.h"
41 #include "ospf6_area.h"
42 #include "ospf6_interface.h"
43 #include "ospf6_neighbor.h"
44 #include "ospf6_intra.h"
45 #include "ospf6_asbr.h"
46 #include "ospf6_abr.h"
47 #include "ospf6_flood.h"
48 #include "ospf6d.h"
49 #include "ospf6_spf.h"
50
51 unsigned char conf_debug_ospf6_brouter = 0;
52 uint32_t conf_debug_ospf6_brouter_specific_router_id;
53 uint32_t conf_debug_ospf6_brouter_specific_area_id;
54
55 #define MAX_LSA_PAYLOAD (1024 + 256)
56 /******************************/
57 /* RFC2740 3.4.3.1 Router-LSA */
58 /******************************/
59
60 static char *ospf6_router_lsa_get_nbr_id(struct ospf6_lsa *lsa, char *buf,
61 int buflen, int pos)
62 {
63 struct ospf6_router_lsa *router_lsa;
64 struct ospf6_router_lsdesc *lsdesc;
65 char *start, *end;
66 char buf1[INET_ADDRSTRLEN], buf2[INET_ADDRSTRLEN];
67
68 if (lsa) {
69 router_lsa = (struct ospf6_router_lsa
70 *)((char *)lsa->header
71 + sizeof(struct ospf6_lsa_header));
72 start = (char *)router_lsa + sizeof(struct ospf6_router_lsa);
73 end = (char *)lsa->header + ntohs(lsa->header->length);
74
75 lsdesc = (struct ospf6_router_lsdesc
76 *)(start
77 + pos * (sizeof(struct
78 ospf6_router_lsdesc)));
79 if ((char *)lsdesc < end) {
80 if (buf && (buflen > INET_ADDRSTRLEN * 2)) {
81 inet_ntop(AF_INET,
82 &lsdesc->neighbor_interface_id, buf1,
83 sizeof(buf1));
84 inet_ntop(AF_INET, &lsdesc->neighbor_router_id,
85 buf2, sizeof(buf2));
86 sprintf(buf, "%s/%s", buf2, buf1);
87 }
88 } else
89 return NULL;
90 }
91
92 return buf;
93 }
94
95 static int ospf6_router_lsa_show(struct vty *vty, struct ospf6_lsa *lsa)
96 {
97 char *start, *end, *current;
98 char buf[32], name[32], bits[16], options[32];
99 struct ospf6_router_lsa *router_lsa;
100 struct ospf6_router_lsdesc *lsdesc;
101
102 router_lsa =
103 (struct ospf6_router_lsa *)((char *)lsa->header
104 + sizeof(struct ospf6_lsa_header));
105
106 ospf6_capability_printbuf(router_lsa->bits, bits, sizeof(bits));
107 ospf6_options_printbuf(router_lsa->options, options, sizeof(options));
108 vty_out(vty, " Bits: %s Options: %s\n", bits, options);
109
110 start = (char *)router_lsa + sizeof(struct ospf6_router_lsa);
111 end = (char *)lsa->header + ntohs(lsa->header->length);
112 for (current = start;
113 current + sizeof(struct ospf6_router_lsdesc) <= end;
114 current += sizeof(struct ospf6_router_lsdesc)) {
115 lsdesc = (struct ospf6_router_lsdesc *)current;
116
117 if (lsdesc->type == OSPF6_ROUTER_LSDESC_POINTTOPOINT)
118 snprintf(name, sizeof(name), "Point-To-Point");
119 else if (lsdesc->type == OSPF6_ROUTER_LSDESC_TRANSIT_NETWORK)
120 snprintf(name, sizeof(name), "Transit-Network");
121 else if (lsdesc->type == OSPF6_ROUTER_LSDESC_STUB_NETWORK)
122 snprintf(name, sizeof(name), "Stub-Network");
123 else if (lsdesc->type == OSPF6_ROUTER_LSDESC_VIRTUAL_LINK)
124 snprintf(name, sizeof(name), "Virtual-Link");
125 else
126 snprintf(name, sizeof(name), "Unknown (%#x)",
127 lsdesc->type);
128
129 vty_out(vty, " Type: %s Metric: %d\n", name,
130 ntohs(lsdesc->metric));
131 vty_out(vty, " Interface ID: %s\n",
132 inet_ntop(AF_INET, &lsdesc->interface_id, buf,
133 sizeof(buf)));
134 vty_out(vty, " Neighbor Interface ID: %s\n",
135 inet_ntop(AF_INET, &lsdesc->neighbor_interface_id, buf,
136 sizeof(buf)));
137 vty_out(vty, " Neighbor Router ID: %s\n",
138 inet_ntop(AF_INET, &lsdesc->neighbor_router_id, buf,
139 sizeof(buf)));
140 }
141 return 0;
142 }
143
144 static void ospf6_router_lsa_options_set(struct ospf6_area *oa,
145 struct ospf6_router_lsa *router_lsa)
146 {
147 OSPF6_OPT_CLEAR_ALL(router_lsa->options);
148 memcpy(router_lsa->options, oa->options, 3);
149
150 if (ospf6_is_router_abr(ospf6))
151 SET_FLAG(router_lsa->bits, OSPF6_ROUTER_BIT_B);
152 else
153 UNSET_FLAG(router_lsa->bits, OSPF6_ROUTER_BIT_B);
154
155 if (!IS_AREA_STUB(oa) && ospf6_asbr_is_asbr(oa->ospf6)) {
156 SET_FLAG(router_lsa->bits, OSPF6_ROUTER_BIT_E);
157 } else {
158 UNSET_FLAG(router_lsa->bits, OSPF6_ROUTER_BIT_E);
159 }
160
161 UNSET_FLAG(router_lsa->bits, OSPF6_ROUTER_BIT_V);
162 UNSET_FLAG(router_lsa->bits, OSPF6_ROUTER_BIT_W);
163 }
164
165 int ospf6_router_is_stub_router(struct ospf6_lsa *lsa)
166 {
167 struct ospf6_router_lsa *rtr_lsa;
168
169 if (lsa != NULL && OSPF6_LSA_IS_TYPE(ROUTER, lsa)) {
170 rtr_lsa = (struct ospf6_router_lsa
171 *)((caddr_t)lsa->header
172 + sizeof(struct ospf6_lsa_header));
173
174 if (!OSPF6_OPT_ISSET(rtr_lsa->options, OSPF6_OPT_R)) {
175 return OSPF6_IS_STUB_ROUTER;
176 } else if (!OSPF6_OPT_ISSET(rtr_lsa->options, OSPF6_OPT_V6)) {
177 return OSPF6_IS_STUB_ROUTER_V6;
178 }
179 }
180
181 return OSPF6_NOT_STUB_ROUTER;
182 }
183
184 int ospf6_router_lsa_originate(struct thread *thread)
185 {
186 struct ospf6_area *oa;
187
188 char buffer[OSPF6_MAX_LSASIZE];
189 struct ospf6_lsa_header *lsa_header;
190 struct ospf6_lsa *lsa;
191
192 uint32_t link_state_id = 0;
193 struct listnode *node, *nnode;
194 struct listnode *j;
195 struct ospf6_interface *oi;
196 struct ospf6_neighbor *on, *drouter = NULL;
197 struct ospf6_router_lsa *router_lsa;
198 struct ospf6_router_lsdesc *lsdesc;
199 uint16_t type;
200 uint32_t router;
201 int count;
202
203 oa = (struct ospf6_area *)THREAD_ARG(thread);
204 oa->thread_router_lsa = NULL;
205
206 if (IS_OSPF6_DEBUG_ORIGINATE(ROUTER))
207 zlog_debug("Originate Router-LSA for Area %s", oa->name);
208
209 memset(buffer, 0, sizeof(buffer));
210 lsa_header = (struct ospf6_lsa_header *)buffer;
211 router_lsa =
212 (struct ospf6_router_lsa *)((caddr_t)lsa_header
213 + sizeof(struct ospf6_lsa_header));
214
215 ospf6_router_lsa_options_set(oa, router_lsa);
216
217 /* describe links for each interfaces */
218 lsdesc = (struct ospf6_router_lsdesc
219 *)((caddr_t)router_lsa
220 + sizeof(struct ospf6_router_lsa));
221
222 for (ALL_LIST_ELEMENTS(oa->if_list, node, nnode, oi)) {
223 /* Interfaces in state Down or Loopback are not described */
224 if (oi->state == OSPF6_INTERFACE_DOWN
225 || oi->state == OSPF6_INTERFACE_LOOPBACK)
226 continue;
227
228 /* Nor are interfaces without any full adjacencies described */
229 count = 0;
230 for (ALL_LIST_ELEMENTS_RO(oi->neighbor_list, j, on))
231 if (on->state == OSPF6_NEIGHBOR_FULL)
232 count++;
233
234 if (count == 0)
235 continue;
236
237 /* Multiple Router-LSA instance according to size limit setting
238 */
239 if ((oa->router_lsa_size_limit != 0)
240 && ((size_t)((char *)lsdesc - buffer)
241 + sizeof(struct ospf6_router_lsdesc)
242 > oa->router_lsa_size_limit)) {
243 if ((caddr_t)lsdesc
244 == (caddr_t)router_lsa
245 + sizeof(struct ospf6_router_lsa)) {
246 if (IS_OSPF6_DEBUG_ORIGINATE(ROUTER))
247 zlog_debug(
248 "Size limit setting for Router-LSA too short");
249 return 0;
250 }
251
252 /* Fill LSA Header */
253 lsa_header->age = 0;
254 lsa_header->type = htons(OSPF6_LSTYPE_ROUTER);
255 lsa_header->id = htonl(link_state_id);
256 lsa_header->adv_router = oa->ospf6->router_id;
257 lsa_header->seqnum = ospf6_new_ls_seqnum(
258 lsa_header->type, lsa_header->id,
259 lsa_header->adv_router, oa->lsdb);
260 lsa_header->length =
261 htons((caddr_t)lsdesc - (caddr_t)buffer);
262
263 /* LSA checksum */
264 ospf6_lsa_checksum(lsa_header);
265
266 /* create LSA */
267 lsa = ospf6_lsa_create(lsa_header);
268
269 /* Originate */
270 ospf6_lsa_originate_area(lsa, oa);
271
272 /* Reset Buffer to fill next Router LSA */
273 memset(buffer, 0, sizeof(buffer));
274 lsa_header = (struct ospf6_lsa_header *)buffer;
275 router_lsa =
276 (struct ospf6_router_lsa
277 *)((caddr_t)lsa_header
278 + sizeof(struct ospf6_lsa_header));
279
280 ospf6_router_lsa_options_set(oa, router_lsa);
281
282 /* describe links for each interfaces */
283 lsdesc = (struct ospf6_router_lsdesc
284 *)((caddr_t)router_lsa
285 + sizeof(struct ospf6_router_lsa));
286
287 link_state_id++;
288 }
289
290 /* Point-to-Point interfaces */
291 if (oi->type == OSPF_IFTYPE_POINTOPOINT) {
292 for (ALL_LIST_ELEMENTS_RO(oi->neighbor_list, j, on)) {
293 if (on->state != OSPF6_NEIGHBOR_FULL)
294 continue;
295
296 lsdesc->type = OSPF6_ROUTER_LSDESC_POINTTOPOINT;
297 lsdesc->metric = htons(oi->cost);
298 lsdesc->interface_id =
299 htonl(oi->interface->ifindex);
300 lsdesc->neighbor_interface_id =
301 htonl(on->ifindex);
302 lsdesc->neighbor_router_id = on->router_id;
303
304 lsdesc++;
305 }
306 }
307
308 /* Broadcast and NBMA interfaces */
309 else if (oi->type == OSPF_IFTYPE_BROADCAST) {
310 /* If this router is not DR,
311 and If this router not fully adjacent with DR,
312 this interface is not transit yet: ignore. */
313 if (oi->state != OSPF6_INTERFACE_DR) {
314 drouter =
315 ospf6_neighbor_lookup(oi->drouter, oi);
316 if (drouter == NULL
317 || drouter->state != OSPF6_NEIGHBOR_FULL)
318 continue;
319 }
320
321 lsdesc->type = OSPF6_ROUTER_LSDESC_TRANSIT_NETWORK;
322 lsdesc->metric = htons(oi->cost);
323 lsdesc->interface_id = htonl(oi->interface->ifindex);
324 if (oi->state != OSPF6_INTERFACE_DR) {
325 lsdesc->neighbor_interface_id =
326 htonl(drouter->ifindex);
327 lsdesc->neighbor_router_id = drouter->router_id;
328 } else {
329 lsdesc->neighbor_interface_id =
330 htonl(oi->interface->ifindex);
331 lsdesc->neighbor_router_id =
332 oi->area->ospf6->router_id;
333 }
334
335 lsdesc++;
336 } else {
337 assert(0); /* Unknown interface type */
338 }
339
340 /* Virtual links */
341 /* xxx */
342 /* Point-to-Multipoint interfaces */
343 /* xxx */
344 }
345
346 /* Fill LSA Header */
347 lsa_header->age = 0;
348 lsa_header->type = htons(OSPF6_LSTYPE_ROUTER);
349 lsa_header->id = htonl(link_state_id);
350 lsa_header->adv_router = oa->ospf6->router_id;
351 lsa_header->seqnum =
352 ospf6_new_ls_seqnum(lsa_header->type, lsa_header->id,
353 lsa_header->adv_router, oa->lsdb);
354 lsa_header->length = htons((caddr_t)lsdesc - (caddr_t)buffer);
355
356 /* LSA checksum */
357 ospf6_lsa_checksum(lsa_header);
358
359 /* create LSA */
360 lsa = ospf6_lsa_create(lsa_header);
361
362 /* Originate */
363 ospf6_lsa_originate_area(lsa, oa);
364
365 link_state_id++;
366
367 /* Do premature-aging of rest, undesired Router-LSAs */
368 type = ntohs(OSPF6_LSTYPE_ROUTER);
369 router = oa->ospf6->router_id;
370 count = 0;
371 for (ALL_LSDB_TYPED_ADVRTR(oa->lsdb, type, router, lsa)) {
372 if (ntohl(lsa->header->id) < link_state_id)
373 continue;
374 ospf6_lsa_purge(lsa);
375 count++;
376 }
377
378 /*
379 * Waiting till the LSA is actually removed from the database to trigger
380 * SPF delays network convergence. Unlike IPv4, for an ABR, when all
381 * interfaces associated with an area are gone, triggering an SPF right
382 * away
383 * helps convergence with inter-area routes.
384 */
385 if (count && !link_state_id)
386 ospf6_spf_schedule(oa->ospf6,
387 OSPF6_SPF_FLAGS_ROUTER_LSA_ORIGINATED);
388
389 return 0;
390 }
391
392 /*******************************/
393 /* RFC2740 3.4.3.2 Network-LSA */
394 /*******************************/
395
396 static char *ospf6_network_lsa_get_ar_id(struct ospf6_lsa *lsa, char *buf,
397 int buflen, int pos)
398 {
399 char *start, *end, *current;
400 struct ospf6_network_lsa *network_lsa;
401 struct ospf6_network_lsdesc *lsdesc;
402
403 if (lsa) {
404 network_lsa = (struct ospf6_network_lsa
405 *)((caddr_t)lsa->header
406 + sizeof(struct ospf6_lsa_header));
407
408 start = (char *)network_lsa + sizeof(struct ospf6_network_lsa);
409 end = (char *)lsa->header + ntohs(lsa->header->length);
410 current = start + pos * (sizeof(struct ospf6_network_lsdesc));
411
412 if ((current + sizeof(struct ospf6_network_lsdesc)) <= end) {
413 lsdesc = (struct ospf6_network_lsdesc *)current;
414 if (buf)
415 inet_ntop(AF_INET, &lsdesc->router_id, buf,
416 buflen);
417 } else
418 return NULL;
419 }
420
421 return (buf);
422 }
423
424 static int ospf6_network_lsa_show(struct vty *vty, struct ospf6_lsa *lsa)
425 {
426 char *start, *end, *current;
427 struct ospf6_network_lsa *network_lsa;
428 struct ospf6_network_lsdesc *lsdesc;
429 char buf[128], options[32];
430
431 network_lsa =
432 (struct ospf6_network_lsa *)((caddr_t)lsa->header
433 + sizeof(struct ospf6_lsa_header));
434
435 ospf6_options_printbuf(network_lsa->options, options, sizeof(options));
436 vty_out(vty, " Options: %s\n", options);
437
438 start = (char *)network_lsa + sizeof(struct ospf6_network_lsa);
439 end = (char *)lsa->header + ntohs(lsa->header->length);
440 for (current = start;
441 current + sizeof(struct ospf6_network_lsdesc) <= end;
442 current += sizeof(struct ospf6_network_lsdesc)) {
443 lsdesc = (struct ospf6_network_lsdesc *)current;
444 inet_ntop(AF_INET, &lsdesc->router_id, buf, sizeof(buf));
445 vty_out(vty, " Attached Router: %s\n", buf);
446 }
447 return 0;
448 }
449
450 int ospf6_network_lsa_originate(struct thread *thread)
451 {
452 struct ospf6_interface *oi;
453
454 char buffer[OSPF6_MAX_LSASIZE];
455 struct ospf6_lsa_header *lsa_header;
456
457 int count;
458 struct ospf6_lsa *old, *lsa;
459 struct ospf6_network_lsa *network_lsa;
460 struct ospf6_network_lsdesc *lsdesc;
461 struct ospf6_neighbor *on;
462 struct ospf6_link_lsa *link_lsa;
463 struct listnode *i;
464 uint16_t type;
465
466 oi = (struct ospf6_interface *)THREAD_ARG(thread);
467 oi->thread_network_lsa = NULL;
468
469 /* The interface must be enabled until here. A Network-LSA of a
470 disabled interface (but was once enabled) should be flushed
471 by ospf6_lsa_refresh (), and does not come here. */
472 assert(oi->area);
473
474 old = ospf6_lsdb_lookup(htons(OSPF6_LSTYPE_NETWORK),
475 htonl(oi->interface->ifindex),
476 oi->area->ospf6->router_id, oi->area->lsdb);
477
478 /* Do not originate Network-LSA if not DR */
479 if (oi->state != OSPF6_INTERFACE_DR) {
480 if (old) {
481 ospf6_lsa_purge(old);
482 /*
483 * Waiting till the LSA is actually removed from the
484 * database to
485 * trigger SPF delays network convergence.
486 */
487 ospf6_spf_schedule(
488 oi->area->ospf6,
489 OSPF6_SPF_FLAGS_NETWORK_LSA_ORIGINATED);
490 }
491 return 0;
492 }
493
494 if (IS_OSPF6_DEBUG_ORIGINATE(NETWORK))
495 zlog_debug("Originate Network-LSA for Interface %s",
496 oi->interface->name);
497
498 /* If none of neighbor is adjacent to us */
499 count = 0;
500
501 for (ALL_LIST_ELEMENTS_RO(oi->neighbor_list, i, on))
502 if (on->state == OSPF6_NEIGHBOR_FULL)
503 count++;
504
505 if (count == 0) {
506 if (IS_OSPF6_DEBUG_ORIGINATE(NETWORK))
507 zlog_debug("Interface stub, ignore");
508 if (old)
509 ospf6_lsa_purge(old);
510 return 0;
511 }
512
513 /* prepare buffer */
514 memset(buffer, 0, sizeof(buffer));
515 lsa_header = (struct ospf6_lsa_header *)buffer;
516 network_lsa =
517 (struct ospf6_network_lsa *)((caddr_t)lsa_header
518 + sizeof(struct ospf6_lsa_header));
519
520 /* Collect the interface's Link-LSAs to describe
521 network's optional capabilities */
522 type = htons(OSPF6_LSTYPE_LINK);
523 for (ALL_LSDB_TYPED(oi->lsdb, type, lsa)) {
524 link_lsa = (struct ospf6_link_lsa
525 *)((caddr_t)lsa->header
526 + sizeof(struct ospf6_lsa_header));
527 network_lsa->options[0] |= link_lsa->options[0];
528 network_lsa->options[1] |= link_lsa->options[1];
529 network_lsa->options[2] |= link_lsa->options[2];
530 }
531
532 lsdesc = (struct ospf6_network_lsdesc
533 *)((caddr_t)network_lsa
534 + sizeof(struct ospf6_network_lsa));
535
536 /* set Link Description to the router itself */
537 lsdesc->router_id = oi->area->ospf6->router_id;
538 lsdesc++;
539
540 /* Walk through the neighbors */
541 for (ALL_LIST_ELEMENTS_RO(oi->neighbor_list, i, on)) {
542 if (on->state != OSPF6_NEIGHBOR_FULL)
543 continue;
544
545 /* set this neighbor's Router-ID to LSA */
546 lsdesc->router_id = on->router_id;
547 lsdesc++;
548 }
549
550 /* Fill LSA Header */
551 lsa_header->age = 0;
552 lsa_header->type = htons(OSPF6_LSTYPE_NETWORK);
553 lsa_header->id = htonl(oi->interface->ifindex);
554 lsa_header->adv_router = oi->area->ospf6->router_id;
555 lsa_header->seqnum =
556 ospf6_new_ls_seqnum(lsa_header->type, lsa_header->id,
557 lsa_header->adv_router, oi->area->lsdb);
558 lsa_header->length = htons((caddr_t)lsdesc - (caddr_t)buffer);
559
560 /* LSA checksum */
561 ospf6_lsa_checksum(lsa_header);
562
563 /* create LSA */
564 lsa = ospf6_lsa_create(lsa_header);
565
566 /* Originate */
567 ospf6_lsa_originate_area(lsa, oi->area);
568
569 return 0;
570 }
571
572
573 /****************************/
574 /* RFC2740 3.4.3.6 Link-LSA */
575 /****************************/
576
577 static char *ospf6_link_lsa_get_prefix_str(struct ospf6_lsa *lsa, char *buf,
578 int buflen, int pos)
579 {
580 char *start, *end, *current;
581 struct ospf6_link_lsa *link_lsa;
582 struct in6_addr in6;
583 struct ospf6_prefix *prefix;
584 int cnt = 0, prefixnum;
585
586 if (lsa) {
587 link_lsa = (struct ospf6_link_lsa
588 *)((caddr_t)lsa->header
589 + sizeof(struct ospf6_lsa_header));
590
591 if (pos == 0) {
592 inet_ntop(AF_INET6, &link_lsa->linklocal_addr, buf,
593 buflen);
594 return (buf);
595 }
596
597 prefixnum = ntohl(link_lsa->prefix_num);
598 if (pos > prefixnum)
599 return NULL;
600
601 start = (char *)link_lsa + sizeof(struct ospf6_link_lsa);
602 end = (char *)lsa->header + ntohs(lsa->header->length);
603 current = start;
604
605 do {
606 prefix = (struct ospf6_prefix *)current;
607 if (prefix->prefix_length == 0
608 || current + OSPF6_PREFIX_SIZE(prefix) > end) {
609 return NULL;
610 }
611
612 if (cnt < pos) {
613 current =
614 start + pos * OSPF6_PREFIX_SIZE(prefix);
615 cnt++;
616 } else {
617 memset(&in6, 0, sizeof(in6));
618 memcpy(&in6, OSPF6_PREFIX_BODY(prefix),
619 OSPF6_PREFIX_SPACE(
620 prefix->prefix_length));
621 inet_ntop(AF_INET6, &in6, buf, buflen);
622 return (buf);
623 }
624 } while (current <= end);
625 }
626 return NULL;
627 }
628
629 static int ospf6_link_lsa_show(struct vty *vty, struct ospf6_lsa *lsa)
630 {
631 char *start, *end, *current;
632 struct ospf6_link_lsa *link_lsa;
633 int prefixnum;
634 char buf[128], options[32];
635 struct ospf6_prefix *prefix;
636 const char *p, *mc, *la, *nu;
637 struct in6_addr in6;
638
639 link_lsa = (struct ospf6_link_lsa *)((caddr_t)lsa->header
640 + sizeof(struct ospf6_lsa_header));
641
642 ospf6_options_printbuf(link_lsa->options, options, sizeof(options));
643 inet_ntop(AF_INET6, &link_lsa->linklocal_addr, buf, sizeof(buf));
644 prefixnum = ntohl(link_lsa->prefix_num);
645
646 vty_out(vty, " Priority: %d Options: %s\n", link_lsa->priority,
647 options);
648 vty_out(vty, " LinkLocal Address: %s\n", buf);
649 vty_out(vty, " Number of Prefix: %d\n", prefixnum);
650
651 start = (char *)link_lsa + sizeof(struct ospf6_link_lsa);
652 end = (char *)lsa->header + ntohs(lsa->header->length);
653 for (current = start; current < end;
654 current += OSPF6_PREFIX_SIZE(prefix)) {
655 prefix = (struct ospf6_prefix *)current;
656 if (prefix->prefix_length == 0
657 || current + OSPF6_PREFIX_SIZE(prefix) > end)
658 break;
659
660 p = (CHECK_FLAG(prefix->prefix_options, OSPF6_PREFIX_OPTION_P)
661 ? "P"
662 : "--");
663 mc = (CHECK_FLAG(prefix->prefix_options, OSPF6_PREFIX_OPTION_MC)
664 ? "MC"
665 : "--");
666 la = (CHECK_FLAG(prefix->prefix_options, OSPF6_PREFIX_OPTION_LA)
667 ? "LA"
668 : "--");
669 nu = (CHECK_FLAG(prefix->prefix_options, OSPF6_PREFIX_OPTION_NU)
670 ? "NU"
671 : "--");
672 vty_out(vty, " Prefix Options: %s|%s|%s|%s\n", p, mc, la,
673 nu);
674
675 memset(&in6, 0, sizeof(in6));
676 memcpy(&in6, OSPF6_PREFIX_BODY(prefix),
677 OSPF6_PREFIX_SPACE(prefix->prefix_length));
678 inet_ntop(AF_INET6, &in6, buf, sizeof(buf));
679 vty_out(vty, " Prefix: %s/%d\n", buf,
680 prefix->prefix_length);
681 }
682
683 return 0;
684 }
685
686 int ospf6_link_lsa_originate(struct thread *thread)
687 {
688 struct ospf6_interface *oi;
689
690 char buffer[OSPF6_MAX_LSASIZE];
691 struct ospf6_lsa_header *lsa_header;
692 struct ospf6_lsa *old, *lsa;
693
694 struct ospf6_link_lsa *link_lsa;
695 struct ospf6_route *route;
696 struct ospf6_prefix *op;
697
698 oi = (struct ospf6_interface *)THREAD_ARG(thread);
699 oi->thread_link_lsa = NULL;
700
701 assert(oi->area);
702
703 /* find previous LSA */
704 old = ospf6_lsdb_lookup(htons(OSPF6_LSTYPE_LINK),
705 htonl(oi->interface->ifindex),
706 oi->area->ospf6->router_id, oi->lsdb);
707
708 if (CHECK_FLAG(oi->flag, OSPF6_INTERFACE_DISABLE)) {
709 if (old)
710 ospf6_lsa_purge(old);
711 return 0;
712 }
713
714 if (IS_OSPF6_DEBUG_ORIGINATE(LINK))
715 zlog_debug("Originate Link-LSA for Interface %s",
716 oi->interface->name);
717
718 /* can't make Link-LSA if linklocal address not set */
719 if (oi->linklocal_addr == NULL) {
720 if (IS_OSPF6_DEBUG_ORIGINATE(LINK))
721 zlog_debug(
722 "No Linklocal address on %s, defer originating",
723 oi->interface->name);
724 if (old)
725 ospf6_lsa_purge(old);
726 return 0;
727 }
728
729 /* prepare buffer */
730 memset(buffer, 0, sizeof(buffer));
731 lsa_header = (struct ospf6_lsa_header *)buffer;
732 link_lsa = (struct ospf6_link_lsa *)((caddr_t)lsa_header
733 + sizeof(struct ospf6_lsa_header));
734
735 /* Fill Link-LSA */
736 link_lsa->priority = oi->priority;
737 memcpy(link_lsa->options, oi->area->options, 3);
738 memcpy(&link_lsa->linklocal_addr, oi->linklocal_addr,
739 sizeof(struct in6_addr));
740 link_lsa->prefix_num = htonl(oi->route_connected->count);
741
742 op = (struct ospf6_prefix *)((caddr_t)link_lsa
743 + sizeof(struct ospf6_link_lsa));
744
745 /* connected prefix to advertise */
746 for (route = ospf6_route_head(oi->route_connected); route;
747 route = ospf6_route_next(route)) {
748 op->prefix_length = route->prefix.prefixlen;
749 op->prefix_options = route->path.prefix_options;
750 op->prefix_metric = htons(0);
751 memcpy(OSPF6_PREFIX_BODY(op), &route->prefix.u.prefix6,
752 OSPF6_PREFIX_SPACE(op->prefix_length));
753 op = OSPF6_PREFIX_NEXT(op);
754 }
755
756 /* Fill LSA Header */
757 lsa_header->age = 0;
758 lsa_header->type = htons(OSPF6_LSTYPE_LINK);
759 lsa_header->id = htonl(oi->interface->ifindex);
760 lsa_header->adv_router = oi->area->ospf6->router_id;
761 lsa_header->seqnum =
762 ospf6_new_ls_seqnum(lsa_header->type, lsa_header->id,
763 lsa_header->adv_router, oi->lsdb);
764 lsa_header->length = htons((caddr_t)op - (caddr_t)buffer);
765
766 /* LSA checksum */
767 ospf6_lsa_checksum(lsa_header);
768
769 /* create LSA */
770 lsa = ospf6_lsa_create(lsa_header);
771
772 /* Originate */
773 ospf6_lsa_originate_interface(lsa, oi);
774
775 return 0;
776 }
777
778
779 /*****************************************/
780 /* RFC2740 3.4.3.7 Intra-Area-Prefix-LSA */
781 /*****************************************/
782 static char *ospf6_intra_prefix_lsa_get_prefix_str(struct ospf6_lsa *lsa,
783 char *buf, int buflen,
784 int pos)
785 {
786 char *start, *end, *current;
787 struct ospf6_intra_prefix_lsa *intra_prefix_lsa;
788 struct in6_addr in6;
789 int prefixnum, cnt = 0;
790 struct ospf6_prefix *prefix;
791
792 if (lsa) {
793 intra_prefix_lsa =
794 (struct ospf6_intra_prefix_lsa
795 *)((caddr_t)lsa->header
796 + sizeof(struct ospf6_lsa_header));
797
798 prefixnum = ntohs(intra_prefix_lsa->prefix_num);
799 if (pos > prefixnum)
800 return NULL;
801
802 start = (char *)intra_prefix_lsa
803 + sizeof(struct ospf6_intra_prefix_lsa);
804 end = (char *)lsa->header + ntohs(lsa->header->length);
805 current = start;
806
807 do {
808 prefix = (struct ospf6_prefix *)current;
809 if (prefix->prefix_length == 0
810 || current + OSPF6_PREFIX_SIZE(prefix) > end) {
811 return NULL;
812 }
813
814 if (cnt < pos) {
815 current =
816 start + pos * OSPF6_PREFIX_SIZE(prefix);
817 cnt++;
818 } else {
819 memset(&in6, 0, sizeof(in6));
820 memcpy(&in6, OSPF6_PREFIX_BODY(prefix),
821 OSPF6_PREFIX_SPACE(
822 prefix->prefix_length));
823 inet_ntop(AF_INET6, &in6, buf, buflen);
824 sprintf(&buf[strlen(buf)], "/%d",
825 prefix->prefix_length);
826 return (buf);
827 }
828 } while (current <= end);
829 }
830 return (buf);
831 }
832
833 static int ospf6_intra_prefix_lsa_show(struct vty *vty, struct ospf6_lsa *lsa)
834 {
835 char *start, *end, *current;
836 struct ospf6_intra_prefix_lsa *intra_prefix_lsa;
837 int prefixnum;
838 char buf[128];
839 struct ospf6_prefix *prefix;
840 char id[16], adv_router[16];
841 const char *p, *mc, *la, *nu;
842 struct in6_addr in6;
843
844 intra_prefix_lsa = (struct ospf6_intra_prefix_lsa
845 *)((caddr_t)lsa->header
846 + sizeof(struct ospf6_lsa_header));
847
848 prefixnum = ntohs(intra_prefix_lsa->prefix_num);
849
850 vty_out(vty, " Number of Prefix: %d\n", prefixnum);
851
852 inet_ntop(AF_INET, &intra_prefix_lsa->ref_id, id, sizeof(id));
853 inet_ntop(AF_INET, &intra_prefix_lsa->ref_adv_router, adv_router,
854 sizeof(adv_router));
855 vty_out(vty, " Reference: %s Id: %s Adv: %s\n",
856 ospf6_lstype_name(intra_prefix_lsa->ref_type), id, adv_router);
857
858 start = (char *)intra_prefix_lsa
859 + sizeof(struct ospf6_intra_prefix_lsa);
860 end = (char *)lsa->header + ntohs(lsa->header->length);
861 for (current = start; current < end;
862 current += OSPF6_PREFIX_SIZE(prefix)) {
863 prefix = (struct ospf6_prefix *)current;
864 if (prefix->prefix_length == 0
865 || current + OSPF6_PREFIX_SIZE(prefix) > end)
866 break;
867
868 p = (CHECK_FLAG(prefix->prefix_options, OSPF6_PREFIX_OPTION_P)
869 ? "P"
870 : "--");
871 mc = (CHECK_FLAG(prefix->prefix_options, OSPF6_PREFIX_OPTION_MC)
872 ? "MC"
873 : "--");
874 la = (CHECK_FLAG(prefix->prefix_options, OSPF6_PREFIX_OPTION_LA)
875 ? "LA"
876 : "--");
877 nu = (CHECK_FLAG(prefix->prefix_options, OSPF6_PREFIX_OPTION_NU)
878 ? "NU"
879 : "--");
880 vty_out(vty, " Prefix Options: %s|%s|%s|%s\n", p, mc, la,
881 nu);
882
883 memset(&in6, 0, sizeof(in6));
884 memcpy(&in6, OSPF6_PREFIX_BODY(prefix),
885 OSPF6_PREFIX_SPACE(prefix->prefix_length));
886 inet_ntop(AF_INET6, &in6, buf, sizeof(buf));
887 vty_out(vty, " Prefix: %s/%d\n", buf,
888 prefix->prefix_length);
889 }
890
891 return 0;
892 }
893
894 int ospf6_intra_prefix_lsa_originate_stub(struct thread *thread)
895 {
896 struct ospf6_area *oa;
897
898 char buffer[OSPF6_MAX_LSASIZE];
899 struct ospf6_lsa_header *lsa_header;
900 struct ospf6_lsa *old, *lsa, *old_next = NULL;
901
902 struct ospf6_intra_prefix_lsa *intra_prefix_lsa;
903 struct ospf6_interface *oi;
904 struct ospf6_neighbor *on;
905 struct ospf6_route *route;
906 struct ospf6_prefix *op;
907 struct listnode *i, *j;
908 int full_count = 0;
909 unsigned short prefix_num = 0;
910 char buf[PREFIX2STR_BUFFER];
911 struct ospf6_route_table *route_advertise;
912 int ls_id = 0;
913
914 oa = (struct ospf6_area *)THREAD_ARG(thread);
915 oa->thread_intra_prefix_lsa = NULL;
916
917 /* find previous LSA */
918 old = ospf6_lsdb_lookup(htons(OSPF6_LSTYPE_INTRA_PREFIX), htonl(0),
919 oa->ospf6->router_id, oa->lsdb);
920
921 if (!IS_AREA_ENABLED(oa)) {
922 if (old) {
923 ospf6_lsa_purge(old);
924 /* find previous LSA */
925 old_next = ospf6_lsdb_lookup(
926 htons(OSPF6_LSTYPE_INTRA_PREFIX),
927 htonl(++ls_id), oa->ospf6->router_id, oa->lsdb);
928
929 while (old_next) {
930 ospf6_lsa_purge(old_next);
931 old_next = ospf6_lsdb_lookup(
932 htons(OSPF6_LSTYPE_INTRA_PREFIX),
933 htonl(++ls_id), oa->ospf6->router_id,
934 oa->lsdb);
935 }
936 }
937 return 0;
938 }
939
940 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
941 zlog_debug(
942 "Originate Intra-Area-Prefix-LSA for area %s's stub prefix",
943 oa->name);
944
945 /* prepare buffer */
946 memset(buffer, 0, sizeof(buffer));
947 lsa_header = (struct ospf6_lsa_header *)buffer;
948 intra_prefix_lsa = (struct ospf6_intra_prefix_lsa
949 *)((caddr_t)lsa_header
950 + sizeof(struct ospf6_lsa_header));
951
952 /* Fill Intra-Area-Prefix-LSA */
953 intra_prefix_lsa->ref_type = htons(OSPF6_LSTYPE_ROUTER);
954 intra_prefix_lsa->ref_id = htonl(0);
955 intra_prefix_lsa->ref_adv_router = oa->ospf6->router_id;
956
957 route_advertise = ospf6_route_table_create(0, 0);
958
959 for (ALL_LIST_ELEMENTS_RO(oa->if_list, i, oi)) {
960 if (oi->state == OSPF6_INTERFACE_DOWN) {
961 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
962 zlog_debug(" Interface %s is down, ignore",
963 oi->interface->name);
964 continue;
965 }
966
967 full_count = 0;
968
969 for (ALL_LIST_ELEMENTS_RO(oi->neighbor_list, j, on))
970 if (on->state == OSPF6_NEIGHBOR_FULL)
971 full_count++;
972
973 if (oi->state != OSPF6_INTERFACE_LOOPBACK
974 && oi->state != OSPF6_INTERFACE_POINTTOPOINT
975 && full_count != 0) {
976 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
977 zlog_debug(" Interface %s is not stub, ignore",
978 oi->interface->name);
979 continue;
980 }
981
982 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
983 zlog_debug(" Interface %s:", oi->interface->name);
984
985 /* connected prefix to advertise */
986 for (route = ospf6_route_head(oi->route_connected); route;
987 route = ospf6_route_best_next(route)) {
988 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX)) {
989 prefix2str(&route->prefix, buf, sizeof(buf));
990 zlog_debug(" include %s", buf);
991 }
992 ospf6_route_add(ospf6_route_copy(route),
993 route_advertise);
994 }
995 }
996
997 if (route_advertise->count == 0) {
998 if (old) {
999 ls_id = 0;
1000 ospf6_lsa_purge(old);
1001 /* find previous LSA */
1002 old_next = ospf6_lsdb_lookup(
1003 htons(OSPF6_LSTYPE_INTRA_PREFIX),
1004 htonl(++ls_id), oa->ospf6->router_id, oa->lsdb);
1005
1006 while (old_next) {
1007 ospf6_lsa_purge(old_next);
1008 old_next = ospf6_lsdb_lookup(
1009 htons(OSPF6_LSTYPE_INTRA_PREFIX),
1010 htonl(++ls_id), oa->ospf6->router_id,
1011 oa->lsdb);
1012 }
1013 }
1014 ospf6_route_table_delete(route_advertise);
1015 return 0;
1016 }
1017
1018 /* Neighbor change to FULL, if INTRA-AREA-PREFIX LSA
1019 * has not change, Flush old LSA and Re-Originate INP,
1020 * as ospf6_flood() checks if LSA is same as DB,
1021 * it won't be updated to neighbor's DB.
1022 */
1023 if (oa->intra_prefix_originate) {
1024 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
1025 zlog_debug(
1026 "%s: Re-originate intra prefix LSA, Current full nbrs %u",
1027 __func__, oa->full_nbrs);
1028 if (old)
1029 ospf6_lsa_purge_multi_ls_id(oa, old);
1030 oa->intra_prefix_originate = 0;
1031 }
1032
1033 /* put prefixes to advertise */
1034 prefix_num = 0;
1035 op = (struct ospf6_prefix *)((caddr_t)intra_prefix_lsa
1036 + sizeof(struct ospf6_intra_prefix_lsa));
1037 for (route = ospf6_route_head(route_advertise); route;
1038 route = ospf6_route_best_next(route)) {
1039 if (((caddr_t)op - (caddr_t)lsa_header) > MAX_LSA_PAYLOAD) {
1040
1041 intra_prefix_lsa->prefix_num = htons(prefix_num);
1042
1043 /* Fill LSA Header */
1044 lsa_header->age = 0;
1045 lsa_header->type = htons(OSPF6_LSTYPE_INTRA_PREFIX);
1046 lsa_header->id = htonl(ls_id++);
1047 lsa_header->adv_router = oa->ospf6->router_id;
1048 lsa_header->seqnum = ospf6_new_ls_seqnum(
1049 lsa_header->type, lsa_header->id,
1050 lsa_header->adv_router, oa->lsdb);
1051 lsa_header->length =
1052 htons((caddr_t)op - (caddr_t)lsa_header);
1053
1054 /* LSA checksum */
1055 ospf6_lsa_checksum(lsa_header);
1056
1057 /* Create LSA */
1058 lsa = ospf6_lsa_create(lsa_header);
1059
1060 /* Originate */
1061 ospf6_lsa_originate_area(lsa, oa);
1062
1063 /* Prepare next buffer */
1064 memset(buffer, 0, sizeof(buffer));
1065 lsa_header = (struct ospf6_lsa_header *)buffer;
1066 intra_prefix_lsa =
1067 (struct ospf6_intra_prefix_lsa
1068 *)((caddr_t)lsa_header
1069 + sizeof(struct ospf6_lsa_header));
1070
1071 /* Fill Intra-Area-Prefix-LSA */
1072 intra_prefix_lsa->ref_type = htons(OSPF6_LSTYPE_ROUTER);
1073 intra_prefix_lsa->ref_id = htonl(0);
1074 intra_prefix_lsa->ref_adv_router = oa->ospf6->router_id;
1075
1076 /* Put next set of prefixes to advertise */
1077 prefix_num = 0;
1078 op = (struct ospf6_prefix
1079 *)((caddr_t)intra_prefix_lsa
1080 + sizeof(struct
1081 ospf6_intra_prefix_lsa));
1082 }
1083
1084 op->prefix_length = route->prefix.prefixlen;
1085 op->prefix_options = route->path.prefix_options;
1086 op->prefix_metric = htons(route->path.cost);
1087 memcpy(OSPF6_PREFIX_BODY(op), &route->prefix.u.prefix6,
1088 OSPF6_PREFIX_SPACE(op->prefix_length));
1089 prefix_num++;
1090
1091 op = OSPF6_PREFIX_NEXT(op);
1092 }
1093
1094 ospf6_route_table_delete(route_advertise);
1095
1096 if (prefix_num == 0) {
1097 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
1098 zlog_debug(
1099 "Quit to Advertise Intra-Prefix: no route to advertise");
1100 return 0;
1101 }
1102
1103 intra_prefix_lsa->prefix_num = htons(prefix_num);
1104
1105 /* Fill LSA Header */
1106 lsa_header->age = 0;
1107 lsa_header->type = htons(OSPF6_LSTYPE_INTRA_PREFIX);
1108 lsa_header->id = htonl(ls_id++);
1109 lsa_header->adv_router = oa->ospf6->router_id;
1110 lsa_header->seqnum =
1111 ospf6_new_ls_seqnum(lsa_header->type, lsa_header->id,
1112 lsa_header->adv_router, oa->lsdb);
1113 lsa_header->length = htons((caddr_t)op - (caddr_t)lsa_header);
1114
1115 /* LSA checksum */
1116 ospf6_lsa_checksum(lsa_header);
1117
1118 /* create LSA */
1119 lsa = ospf6_lsa_create(lsa_header);
1120
1121 /* Originate */
1122 ospf6_lsa_originate_area(lsa, oa);
1123
1124 return 0;
1125 }
1126
1127
1128 int ospf6_intra_prefix_lsa_originate_transit(struct thread *thread)
1129 {
1130 struct ospf6_interface *oi;
1131
1132 char buffer[OSPF6_MAX_LSASIZE];
1133 struct ospf6_lsa_header *lsa_header;
1134 struct ospf6_lsa *old, *lsa;
1135
1136 struct ospf6_intra_prefix_lsa *intra_prefix_lsa;
1137 struct ospf6_neighbor *on;
1138 struct ospf6_route *route;
1139 struct ospf6_prefix *op;
1140 struct listnode *i;
1141 int full_count = 0;
1142 unsigned short prefix_num = 0;
1143 struct ospf6_route_table *route_advertise;
1144 struct ospf6_link_lsa *link_lsa;
1145 char *start, *end, *current;
1146 uint16_t type;
1147 char buf[PREFIX2STR_BUFFER];
1148
1149 oi = (struct ospf6_interface *)THREAD_ARG(thread);
1150 oi->thread_intra_prefix_lsa = NULL;
1151
1152 assert(oi->area);
1153
1154 /* find previous LSA */
1155 old = ospf6_lsdb_lookup(htons(OSPF6_LSTYPE_INTRA_PREFIX),
1156 htonl(oi->interface->ifindex),
1157 oi->area->ospf6->router_id, oi->area->lsdb);
1158
1159 if (CHECK_FLAG(oi->flag, OSPF6_INTERFACE_DISABLE)) {
1160 if (old)
1161 ospf6_lsa_purge(old);
1162 return 0;
1163 }
1164
1165 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
1166 zlog_debug(
1167 "Originate Intra-Area-Prefix-LSA for interface %s's prefix",
1168 oi->interface->name);
1169
1170 /* prepare buffer */
1171 memset(buffer, 0, sizeof(buffer));
1172 lsa_header = (struct ospf6_lsa_header *)buffer;
1173 intra_prefix_lsa = (struct ospf6_intra_prefix_lsa
1174 *)((caddr_t)lsa_header
1175 + sizeof(struct ospf6_lsa_header));
1176
1177 /* Fill Intra-Area-Prefix-LSA */
1178 intra_prefix_lsa->ref_type = htons(OSPF6_LSTYPE_NETWORK);
1179 intra_prefix_lsa->ref_id = htonl(oi->interface->ifindex);
1180 intra_prefix_lsa->ref_adv_router = oi->area->ospf6->router_id;
1181
1182 if (oi->state != OSPF6_INTERFACE_DR) {
1183 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
1184 zlog_debug(" Interface is not DR");
1185 if (old)
1186 ospf6_lsa_purge(old);
1187 return 0;
1188 }
1189
1190 full_count = 0;
1191 for (ALL_LIST_ELEMENTS_RO(oi->neighbor_list, i, on))
1192 if (on->state == OSPF6_NEIGHBOR_FULL)
1193 full_count++;
1194
1195 if (full_count == 0) {
1196 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
1197 zlog_debug(" Interface is stub");
1198 if (old)
1199 ospf6_lsa_purge(old);
1200 return 0;
1201 }
1202
1203 /* connected prefix to advertise */
1204 route_advertise = ospf6_route_table_create(0, 0);
1205
1206 type = ntohs(OSPF6_LSTYPE_LINK);
1207 for (ALL_LSDB_TYPED(oi->lsdb, type, lsa)) {
1208 if (OSPF6_LSA_IS_MAXAGE(lsa))
1209 continue;
1210
1211 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
1212 zlog_debug(" include prefix from %s", lsa->name);
1213
1214 if (lsa->header->adv_router != oi->area->ospf6->router_id) {
1215 on = ospf6_neighbor_lookup(lsa->header->adv_router, oi);
1216 if (on == NULL || on->state != OSPF6_NEIGHBOR_FULL) {
1217 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
1218 zlog_debug(
1219 " Neighbor not found or not Full, ignore");
1220 continue;
1221 }
1222 }
1223
1224 link_lsa = (struct ospf6_link_lsa
1225 *)((caddr_t)lsa->header
1226 + sizeof(struct ospf6_lsa_header));
1227
1228 prefix_num = (unsigned short)ntohl(link_lsa->prefix_num);
1229 start = (char *)link_lsa + sizeof(struct ospf6_link_lsa);
1230 end = (char *)lsa->header + ntohs(lsa->header->length);
1231 for (current = start; current < end && prefix_num;
1232 current += OSPF6_PREFIX_SIZE(op)) {
1233 op = (struct ospf6_prefix *)current;
1234 if (op->prefix_length == 0
1235 || current + OSPF6_PREFIX_SIZE(op) > end)
1236 break;
1237
1238 route = ospf6_route_create();
1239
1240 route->type = OSPF6_DEST_TYPE_NETWORK;
1241 route->prefix.family = AF_INET6;
1242 route->prefix.prefixlen = op->prefix_length;
1243 memset(&route->prefix.u.prefix6, 0,
1244 sizeof(struct in6_addr));
1245 memcpy(&route->prefix.u.prefix6, OSPF6_PREFIX_BODY(op),
1246 OSPF6_PREFIX_SPACE(op->prefix_length));
1247
1248 route->path.origin.type = lsa->header->type;
1249 route->path.origin.id = lsa->header->id;
1250 route->path.origin.adv_router = lsa->header->adv_router;
1251 route->path.options[0] = link_lsa->options[0];
1252 route->path.options[1] = link_lsa->options[1];
1253 route->path.options[2] = link_lsa->options[2];
1254 route->path.prefix_options = op->prefix_options;
1255 route->path.area_id = oi->area->area_id;
1256 route->path.type = OSPF6_PATH_TYPE_INTRA;
1257
1258 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX)) {
1259 prefix2str(&route->prefix, buf, sizeof(buf));
1260 zlog_debug(" include %s", buf);
1261 }
1262
1263 ospf6_route_add(route, route_advertise);
1264 prefix_num--;
1265 }
1266 if (current != end && IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
1267 zlog_debug("Trailing garbage in %s", lsa->name);
1268 }
1269
1270 op = (struct ospf6_prefix *)((caddr_t)intra_prefix_lsa
1271 + sizeof(struct ospf6_intra_prefix_lsa));
1272
1273 prefix_num = 0;
1274 for (route = ospf6_route_head(route_advertise); route;
1275 route = ospf6_route_best_next(route)) {
1276 op->prefix_length = route->prefix.prefixlen;
1277 op->prefix_options = route->path.prefix_options;
1278 op->prefix_metric = htons(0);
1279 memcpy(OSPF6_PREFIX_BODY(op), &route->prefix.u.prefix6,
1280 OSPF6_PREFIX_SPACE(op->prefix_length));
1281 op = OSPF6_PREFIX_NEXT(op);
1282 prefix_num++;
1283 }
1284
1285 ospf6_route_table_delete(route_advertise);
1286
1287 if (prefix_num == 0) {
1288 if (IS_OSPF6_DEBUG_ORIGINATE(INTRA_PREFIX))
1289 zlog_debug(
1290 "Quit to Advertise Intra-Prefix: no route to advertise");
1291 return 0;
1292 }
1293
1294 intra_prefix_lsa->prefix_num = htons(prefix_num);
1295
1296 /* Fill LSA Header */
1297 lsa_header->age = 0;
1298 lsa_header->type = htons(OSPF6_LSTYPE_INTRA_PREFIX);
1299 lsa_header->id = htonl(oi->interface->ifindex);
1300 lsa_header->adv_router = oi->area->ospf6->router_id;
1301 lsa_header->seqnum =
1302 ospf6_new_ls_seqnum(lsa_header->type, lsa_header->id,
1303 lsa_header->adv_router, oi->area->lsdb);
1304 lsa_header->length = htons((caddr_t)op - (caddr_t)lsa_header);
1305
1306 /* LSA checksum */
1307 ospf6_lsa_checksum(lsa_header);
1308
1309 /* create LSA */
1310 lsa = ospf6_lsa_create(lsa_header);
1311
1312 /* Originate */
1313 ospf6_lsa_originate_area(lsa, oi->area);
1314
1315 return 0;
1316 }
1317
1318 static void ospf6_intra_prefix_update_route_origin(struct ospf6_route *oa_route)
1319 {
1320 struct ospf6_path *h_path;
1321 struct ospf6_route *g_route, *nroute;
1322
1323 /* Update Global ospf6 route path */
1324 g_route = ospf6_route_lookup(&oa_route->prefix,
1325 ospf6->route_table);
1326
1327 assert(g_route);
1328
1329 for (ospf6_route_lock(g_route); g_route &&
1330 ospf6_route_is_prefix(&oa_route->prefix, g_route);
1331 g_route = nroute) {
1332 nroute = ospf6_route_next(g_route);
1333 if (g_route->type != oa_route->type)
1334 continue;
1335 if (g_route->path.area_id != oa_route->path.area_id)
1336 continue;
1337 if (g_route->path.type != OSPF6_PATH_TYPE_INTRA)
1338 continue;
1339 if (g_route->path.cost != oa_route->path.cost)
1340 continue;
1341
1342 if (ospf6_route_is_same_origin(g_route, oa_route)) {
1343 h_path = (struct ospf6_path *)listgetdata(
1344 listhead(g_route->paths));
1345 g_route->path.origin.type = h_path->origin.type;
1346 g_route->path.origin.id = h_path->origin.id;
1347 g_route->path.origin.adv_router =
1348 h_path->origin.adv_router;
1349 break;
1350 }
1351 }
1352
1353 h_path = (struct ospf6_path *)listgetdata(
1354 listhead(oa_route->paths));
1355 oa_route->path.origin.type = h_path->origin.type;
1356 oa_route->path.origin.id = h_path->origin.id;
1357 oa_route->path.origin.adv_router = h_path->origin.adv_router;
1358 }
1359
1360 void ospf6_intra_prefix_route_ecmp_path(struct ospf6_area *oa,
1361 struct ospf6_route *old,
1362 struct ospf6_route *route)
1363 {
1364 struct ospf6_route *old_route, *ls_entry;
1365 struct ospf6_path *ecmp_path, *o_path = NULL;
1366 struct listnode *anode, *anext;
1367 struct listnode *nnode, *rnode, *rnext;
1368 struct ospf6_nexthop *nh, *rnh;
1369 char buf[PREFIX2STR_BUFFER];
1370 bool route_found = false;
1371 struct interface *ifp;
1372 struct ospf6_lsa *lsa;
1373 struct ospf6_intra_prefix_lsa *intra_prefix_lsa;
1374
1375 /* check for old entry match with new route origin,
1376 * delete old entry.
1377 */
1378 for (old_route = old; old_route; old_route = old_route->next) {
1379 bool route_updated = false;
1380
1381 if (!ospf6_route_is_same(old_route, route) ||
1382 (old_route->path.type != route->path.type))
1383 continue;
1384
1385 /* Current and New route has same origin,
1386 * delete old entry.
1387 */
1388 for (ALL_LIST_ELEMENTS(old_route->paths, anode, anext,
1389 o_path)) {
1390 /* Check old route path and route has same
1391 * origin.
1392 */
1393 if (o_path->area_id != route->path.area_id ||
1394 (memcmp(&(o_path)->origin, &(route)->path.origin,
1395 sizeof(struct ospf6_ls_origin)) != 0))
1396 continue;
1397
1398 /* Cost is not same then delete current path */
1399 if (o_path->cost == route->path.cost)
1400 continue;
1401
1402 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1403 prefix2str(&old_route->prefix, buf,
1404 sizeof(buf));
1405 zlog_debug(
1406 "%s: route %s cost old %u new %u is not same, replace route",
1407 __func__, buf, o_path->cost,
1408 route->path.cost);
1409 }
1410
1411 /* Remove selected current path's nh from
1412 * effective nh list.
1413 */
1414 for (ALL_LIST_ELEMENTS_RO(o_path->nh_list, nnode, nh)) {
1415 for (ALL_LIST_ELEMENTS(old_route->nh_list,
1416 rnode, rnext, rnh)) {
1417 if (!ospf6_nexthop_is_same(rnh, nh))
1418 continue;
1419 listnode_delete(old_route->nh_list,
1420 rnh);
1421 ospf6_nexthop_delete(rnh);
1422 route_updated = true;
1423 }
1424 }
1425
1426 listnode_delete(old_route->paths, o_path);
1427 ospf6_path_free(o_path);
1428
1429 /* Current route's path (adv_router info) is similar
1430 * to route being added.
1431 * Replace current route's path with paths list head.
1432 * Update FIB with effective NHs.
1433 */
1434 if (listcount(old_route->paths)) {
1435 if (route_updated) {
1436 for (ALL_LIST_ELEMENTS(old_route->paths,
1437 anode, anext, o_path)) {
1438 ospf6_merge_nexthops(
1439 old_route->nh_list,
1440 o_path->nh_list);
1441 }
1442 /* Update ospf6 route table and
1443 * RIB/FIB with effective
1444 * nh_list
1445 */
1446 if (oa->route_table->hook_add)
1447 (*oa->route_table->hook_add)
1448 (old_route);
1449
1450 if (old_route->path.origin.id ==
1451 route->path.origin.id &&
1452 old_route->path.origin.adv_router ==
1453 route->path.origin.adv_router) {
1454 ospf6_intra_prefix_update_route_origin(
1455 old_route);
1456 }
1457 break;
1458 }
1459 } else {
1460 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1461 prefix2str(&old_route->prefix, buf,
1462 sizeof(buf));
1463 zlog_debug(
1464 "%s: route %s old cost %u new cost %u, delete old entry.",
1465 __func__, buf,
1466 old_route->path.cost,
1467 route->path.cost);
1468 }
1469 if (oa->route_table->hook_remove)
1470 ospf6_route_remove(old_route,
1471 oa->route_table);
1472 else
1473 SET_FLAG(old_route->flag,
1474 OSPF6_ROUTE_REMOVE);
1475 break;
1476 }
1477 }
1478 if (route_updated)
1479 break;
1480 }
1481
1482 for (old_route = old; old_route; old_route = old_route->next) {
1483
1484 if (!ospf6_route_is_same(old_route, route) ||
1485 (old_route->path.type != route->path.type))
1486 continue;
1487
1488 /* Old Route and New Route have Equal Cost, Merge NHs */
1489 if (old_route->path.cost == route->path.cost) {
1490 route_found = true;
1491
1492 /* check if this path exists already in
1493 * route->paths list, if so, replace nh_list.
1494 */
1495 for (ALL_LIST_ELEMENTS_RO(old_route->paths, anode,
1496 o_path)) {
1497 if (o_path->area_id == route->path.area_id &&
1498 (memcmp(&(o_path)->origin,
1499 &(route)->path.origin,
1500 sizeof(struct ospf6_ls_origin)) == 0))
1501 break;
1502 }
1503 /* If path is not found in old_route paths's list,
1504 * add a new path to route paths list and merge
1505 * nexthops in route->path->nh_list.
1506 * Otherwise replace existing path's nh_list.
1507 */
1508 if (o_path == NULL) {
1509 ecmp_path = ospf6_path_dup(&route->path);
1510
1511 /* Add a nh_list to new ecmp path */
1512 ospf6_copy_nexthops(ecmp_path->nh_list,
1513 route->nh_list);
1514 /* Add the new path to route's path list */
1515 listnode_add_sort(old_route->paths, ecmp_path);
1516
1517 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1518 prefix2str(&route->prefix, buf,
1519 sizeof(buf));
1520 zlog_debug(
1521 "%s: route %s %p another path added with nh %u, effective paths %u nh %u",
1522 __func__, buf,
1523 (void *)old_route,
1524 listcount(ecmp_path->nh_list),
1525 old_route->paths ? listcount(
1526 old_route->paths)
1527 : 0,
1528 listcount(old_route->nh_list));
1529 }
1530 } else {
1531 list_delete_all_node(o_path->nh_list);
1532 ospf6_copy_nexthops(o_path->nh_list,
1533 route->nh_list);
1534
1535 }
1536
1537 list_delete_all_node(old_route->nh_list);
1538
1539 for (ALL_LIST_ELEMENTS_RO(old_route->paths, anode,
1540 o_path)) {
1541 ls_entry = ospf6_route_lookup(
1542 &o_path->ls_prefix,
1543 oa->spf_table);
1544 if (ls_entry == NULL) {
1545 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX))
1546 zlog_debug(
1547 "%s: ls_prfix %s ls_entry not found.",
1548 __func__, buf);
1549 continue;
1550 }
1551 lsa = ospf6_lsdb_lookup(o_path->origin.type,
1552 o_path->origin.id,
1553 o_path->origin.adv_router,
1554 oa->lsdb);
1555 if (lsa == NULL) {
1556 if (IS_OSPF6_DEBUG_EXAMIN(
1557 INTRA_PREFIX)) {
1558 struct prefix adv_prefix;
1559
1560 ospf6_linkstate_prefix(
1561 o_path->origin.adv_router,
1562 o_path->origin.id, &adv_prefix);
1563 prefix2str(&adv_prefix, buf,
1564 sizeof(buf));
1565 zlog_debug(
1566 "%s: adv_router %s lsa not found",
1567 __func__, buf);
1568 }
1569 continue;
1570 }
1571 intra_prefix_lsa =
1572 (struct ospf6_intra_prefix_lsa *)
1573 OSPF6_LSA_HEADER_END(lsa->header);
1574
1575 if (intra_prefix_lsa->ref_adv_router
1576 == oa->ospf6->router_id) {
1577 ifp = if_lookup_prefix(
1578 &old_route->prefix,
1579 VRF_DEFAULT);
1580 if (ifp)
1581 ospf6_route_add_nexthop(
1582 old_route,
1583 ifp->ifindex,
1584 NULL);
1585 } else {
1586 ospf6_route_merge_nexthops(old_route,
1587 ls_entry);
1588 }
1589 }
1590
1591 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1592 prefix2str(&route->prefix, buf, sizeof(buf));
1593 zlog_debug(
1594 "%s: route %s %p with final effective paths %u nh%u",
1595 __func__, buf, (void *)old_route,
1596 old_route->paths
1597 ? listcount(old_route->paths)
1598 : 0,
1599 listcount(old_route->nh_list));
1600 }
1601
1602 /* used in intra_route_calculation() to add to
1603 * global ospf6 route table.
1604 */
1605 UNSET_FLAG(old_route->flag, OSPF6_ROUTE_REMOVE);
1606 SET_FLAG(old_route->flag, OSPF6_ROUTE_ADD);
1607 /* Update ospf6 route table and RIB/FIB */
1608 if (oa->route_table->hook_add)
1609 (*oa->route_table->hook_add)(old_route);
1610 /* Delete the new route its info added to existing
1611 * route.
1612 */
1613 ospf6_route_delete(route);
1614
1615 break;
1616 }
1617 }
1618
1619 if (!route_found) {
1620 /* Add new route to existing node in ospf6 route table. */
1621 ospf6_route_add(route, oa->route_table);
1622 }
1623 }
1624
1625 void ospf6_intra_prefix_lsa_add(struct ospf6_lsa *lsa)
1626 {
1627 struct ospf6_area *oa;
1628 struct ospf6_intra_prefix_lsa *intra_prefix_lsa;
1629 struct prefix ls_prefix;
1630 struct ospf6_route *route, *ls_entry, *old;
1631 int prefix_num;
1632 struct ospf6_prefix *op;
1633 char *start, *current, *end;
1634 char buf[PREFIX2STR_BUFFER];
1635 struct interface *ifp;
1636 int direct_connect = 0;
1637 struct ospf6_path *path;
1638
1639 if (OSPF6_LSA_IS_MAXAGE(lsa))
1640 return;
1641
1642 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX))
1643 zlog_debug("%s: LSA %s found", __func__, lsa->name);
1644
1645 oa = OSPF6_AREA(lsa->lsdb->data);
1646
1647 intra_prefix_lsa =
1648 (struct ospf6_intra_prefix_lsa *)OSPF6_LSA_HEADER_END(
1649 lsa->header);
1650 if (intra_prefix_lsa->ref_type == htons(OSPF6_LSTYPE_ROUTER))
1651 ospf6_linkstate_prefix(intra_prefix_lsa->ref_adv_router,
1652 intra_prefix_lsa->ref_id, &ls_prefix);
1653 else if (intra_prefix_lsa->ref_type == htons(OSPF6_LSTYPE_NETWORK))
1654 ospf6_linkstate_prefix(intra_prefix_lsa->ref_adv_router,
1655 intra_prefix_lsa->ref_id, &ls_prefix);
1656 else {
1657 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX))
1658 zlog_debug("Unknown reference LS-type: %#hx",
1659 ntohs(intra_prefix_lsa->ref_type));
1660 return;
1661 }
1662
1663 ls_entry = ospf6_route_lookup(&ls_prefix, oa->spf_table);
1664 if (ls_entry == NULL) {
1665 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1666 ospf6_linkstate_prefix2str(&ls_prefix, buf,
1667 sizeof(buf));
1668 zlog_debug("LS entry does not exist: %s", buf);
1669 }
1670 return;
1671 }
1672
1673 if (intra_prefix_lsa->ref_adv_router == oa->ospf6->router_id) {
1674 /* the intra-prefix are directly connected */
1675 direct_connect = 1;
1676 }
1677
1678 prefix_num = ntohs(intra_prefix_lsa->prefix_num);
1679 start = (caddr_t)intra_prefix_lsa
1680 + sizeof(struct ospf6_intra_prefix_lsa);
1681 end = OSPF6_LSA_END(lsa->header);
1682 for (current = start; current < end; current += OSPF6_PREFIX_SIZE(op)) {
1683 op = (struct ospf6_prefix *)current;
1684 if (prefix_num == 0)
1685 break;
1686 if (end < current + OSPF6_PREFIX_SIZE(op))
1687 break;
1688
1689 /* Appendix A.4.1.1 */
1690 if (CHECK_FLAG(op->prefix_options, OSPF6_PREFIX_OPTION_NU)) {
1691 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1692 ospf6_linkstate_prefix2str(
1693 (struct prefix *)OSPF6_PREFIX_BODY(op),
1694 buf, sizeof(buf));
1695 zlog_debug(
1696 "%s: Skipping Prefix %s has NU option set",
1697 __func__, buf);
1698 }
1699 continue;
1700 }
1701
1702 route = ospf6_route_create();
1703
1704 memset(&route->prefix, 0, sizeof(struct prefix));
1705 route->prefix.family = AF_INET6;
1706 route->prefix.prefixlen = op->prefix_length;
1707 ospf6_prefix_in6_addr(&route->prefix.u.prefix6,
1708 intra_prefix_lsa, op);
1709
1710 route->type = OSPF6_DEST_TYPE_NETWORK;
1711 route->path.origin.type = lsa->header->type;
1712 route->path.origin.id = lsa->header->id;
1713 route->path.origin.adv_router = lsa->header->adv_router;
1714 route->path.prefix_options = op->prefix_options;
1715 route->path.area_id = oa->area_id;
1716 route->path.type = OSPF6_PATH_TYPE_INTRA;
1717 route->path.metric_type = 1;
1718 route->path.cost =
1719 ls_entry->path.cost + ntohs(op->prefix_metric);
1720 memcpy(&route->path.ls_prefix, &ls_prefix,
1721 sizeof(struct prefix));
1722 if (direct_connect) {
1723 ifp = if_lookup_prefix(&route->prefix, VRF_DEFAULT);
1724 if (ifp)
1725 ospf6_route_add_nexthop(route, ifp->ifindex,
1726 NULL);
1727 } else {
1728 ospf6_route_copy_nexthops(route, ls_entry);
1729 }
1730
1731 path = ospf6_path_dup(&route->path);
1732 ospf6_copy_nexthops(path->nh_list, route->path.nh_list);
1733 listnode_add_sort(route->paths, path);
1734
1735 old = ospf6_route_lookup(&route->prefix, oa->route_table);
1736 if (old) {
1737 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1738 prefix2str(&route->prefix, buf, sizeof(buf));
1739 zlog_debug(
1740 "%s Update route: %s old cost %u new cost %u paths %u nh %u",
1741 __func__, buf, old->path.cost,
1742 route->path.cost,
1743 listcount(route->paths),
1744 listcount(route->nh_list));
1745 }
1746 ospf6_intra_prefix_route_ecmp_path(oa, old, route);
1747 } else {
1748 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1749 prefix2str(&route->prefix, buf, sizeof(buf));
1750 zlog_debug(
1751 "%s route %s add with cost %u paths %u nh %u",
1752 __func__, buf, route->path.cost,
1753 listcount(route->paths),
1754 listcount(route->nh_list));
1755 }
1756 ospf6_route_add(route, oa->route_table);
1757 }
1758 prefix_num--;
1759 }
1760
1761 if (current != end && IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX))
1762 zlog_debug("Trailing garbage ignored");
1763 }
1764
1765 static void ospf6_intra_prefix_lsa_remove_update_route(struct ospf6_lsa *lsa,
1766 struct ospf6_area *oa,
1767 struct ospf6_route *route)
1768 {
1769 struct listnode *anode, *anext;
1770 struct listnode *nnode, *rnode, *rnext;
1771 struct ospf6_nexthop *nh, *rnh;
1772 struct ospf6_path *o_path;
1773 bool nh_updated = false;
1774 char buf[PREFIX2STR_BUFFER];
1775
1776 /* Iterate all paths of route to find maching
1777 * with LSA remove info.
1778 * If route->path is same, replace
1779 * from paths list.
1780 */
1781 for (ALL_LIST_ELEMENTS(route->paths, anode, anext, o_path)) {
1782 if ((o_path->origin.type != lsa->header->type) ||
1783 (o_path->origin.adv_router != lsa->header->adv_router) ||
1784 (o_path->origin.id != lsa->header->id))
1785 continue;
1786
1787 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1788 prefix2str(&route->prefix, buf, sizeof(buf));
1789 zlog_debug(
1790 "%s: route %s path found with cost %u nh %u to remove.",
1791 __func__, buf, o_path->cost,
1792 listcount(o_path->nh_list));
1793 }
1794
1795 /* Remove found path's nh_list from
1796 * the route's nh_list.
1797 */
1798 for (ALL_LIST_ELEMENTS_RO(o_path->nh_list, nnode, nh)) {
1799 for (ALL_LIST_ELEMENTS(route->nh_list, rnode,
1800 rnext, rnh)) {
1801 if (!ospf6_nexthop_is_same(rnh, nh))
1802 continue;
1803 listnode_delete(route->nh_list, rnh);
1804 ospf6_nexthop_delete(rnh);
1805 }
1806 }
1807 /* Delete the path from route's
1808 * path list
1809 */
1810 listnode_delete(route->paths, o_path);
1811 ospf6_path_free(o_path);
1812 nh_updated = true;
1813 break;
1814 }
1815
1816 if (nh_updated) {
1817 /* Iterate all paths and merge nexthop,
1818 * unlesss any of the nexthop similar to
1819 * ones deleted as part of path deletion.
1820 */
1821 for (ALL_LIST_ELEMENTS(route->paths, anode, anext, o_path))
1822 ospf6_merge_nexthops(route->nh_list, o_path->nh_list);
1823
1824
1825 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1826 prefix2str(&route->prefix, buf, sizeof(buf));
1827 zlog_debug(
1828 "%s: route %s update paths %u nh %u", __func__,
1829 buf, route->paths ? listcount(route->paths) : 0,
1830 route->nh_list ? listcount(route->nh_list) : 0);
1831 }
1832
1833 /* Update Global Route table and
1834 * RIB/FIB with effective
1835 * nh_list
1836 */
1837 if (oa->route_table->hook_add)
1838 (*oa->route_table->hook_add)(route);
1839
1840 /* route's primary path is similar
1841 * to LSA, replace route's primary
1842 * path with route's paths list
1843 * head.
1844 */
1845 if ((route->path.origin.id == lsa->header->id) &&
1846 (route->path.origin.adv_router ==
1847 lsa->header->adv_router)) {
1848 ospf6_intra_prefix_update_route_origin(route);
1849 }
1850 }
1851
1852 }
1853
1854 void ospf6_intra_prefix_lsa_remove(struct ospf6_lsa *lsa)
1855 {
1856 struct ospf6_area *oa;
1857 struct ospf6_intra_prefix_lsa *intra_prefix_lsa;
1858 struct prefix prefix;
1859 struct ospf6_route *route, *nroute;
1860 int prefix_num;
1861 struct ospf6_prefix *op;
1862 char *start, *current, *end;
1863 char buf[PREFIX2STR_BUFFER];
1864
1865 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX))
1866 zlog_debug("%s: %s disappearing", __func__, lsa->name);
1867
1868 oa = OSPF6_AREA(lsa->lsdb->data);
1869
1870 intra_prefix_lsa =
1871 (struct ospf6_intra_prefix_lsa *)OSPF6_LSA_HEADER_END(
1872 lsa->header);
1873
1874 prefix_num = ntohs(intra_prefix_lsa->prefix_num);
1875 start = (caddr_t)intra_prefix_lsa
1876 + sizeof(struct ospf6_intra_prefix_lsa);
1877 end = OSPF6_LSA_END(lsa->header);
1878 for (current = start; current < end; current += OSPF6_PREFIX_SIZE(op)) {
1879 op = (struct ospf6_prefix *)current;
1880 if (prefix_num == 0)
1881 break;
1882 if (end < current + OSPF6_PREFIX_SIZE(op))
1883 break;
1884 prefix_num--;
1885
1886 memset(&prefix, 0, sizeof(struct prefix));
1887 prefix.family = AF_INET6;
1888 prefix.prefixlen = op->prefix_length;
1889 ospf6_prefix_in6_addr(&prefix.u.prefix6, intra_prefix_lsa, op);
1890
1891 route = ospf6_route_lookup(&prefix, oa->route_table);
1892 if (route == NULL)
1893 continue;
1894
1895 for (ospf6_route_lock(route);
1896 route && ospf6_route_is_prefix(&prefix, route);
1897 route = nroute) {
1898 nroute = ospf6_route_next(route);
1899 if (route->type != OSPF6_DEST_TYPE_NETWORK)
1900 continue;
1901 if (route->path.area_id != oa->area_id)
1902 continue;
1903 if (route->path.type != OSPF6_PATH_TYPE_INTRA)
1904 continue;
1905 /* Route has multiple ECMP paths, remove matching
1906 * path. Update current route's effective nh list
1907 * after removal of one of the path.
1908 */
1909 if (listcount(route->paths) > 1) {
1910 ospf6_intra_prefix_lsa_remove_update_route(
1911 lsa, oa, route);
1912 } else {
1913
1914 if (route->path.origin.type != lsa->header->type
1915 || route->path.origin.id != lsa->header->id
1916 || route->path.origin.adv_router
1917 != lsa->header->adv_router)
1918 continue;
1919
1920 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX)) {
1921 prefix2str(&route->prefix, buf,
1922 sizeof(buf));
1923 zlog_debug(
1924 "%s: route remove %s with path type %u cost %u paths %u nh %u",
1925 __func__, buf, route->path.type,
1926 route->path.cost,
1927 listcount(route->paths),
1928 listcount(route->nh_list));
1929 }
1930 ospf6_route_remove(route, oa->route_table);
1931 }
1932 }
1933 if (route)
1934 ospf6_route_unlock(route);
1935 }
1936
1937 if (current != end && IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX))
1938 zlog_debug("Trailing garbage ignored");
1939 }
1940
1941 void ospf6_intra_route_calculation(struct ospf6_area *oa)
1942 {
1943 struct ospf6_route *route, *nroute;
1944 uint16_t type;
1945 struct ospf6_lsa *lsa;
1946 void (*hook_add)(struct ospf6_route *) = NULL;
1947 void (*hook_remove)(struct ospf6_route *) = NULL;
1948
1949 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX))
1950 zlog_debug("Re-examin intra-routes for area %s", oa->name);
1951
1952 hook_add = oa->route_table->hook_add;
1953 hook_remove = oa->route_table->hook_remove;
1954 oa->route_table->hook_add = NULL;
1955 oa->route_table->hook_remove = NULL;
1956
1957 for (route = ospf6_route_head(oa->route_table); route;
1958 route = ospf6_route_next(route))
1959 route->flag = OSPF6_ROUTE_REMOVE;
1960
1961 type = htons(OSPF6_LSTYPE_INTRA_PREFIX);
1962 for (ALL_LSDB_TYPED(oa->lsdb, type, lsa))
1963 ospf6_intra_prefix_lsa_add(lsa);
1964
1965 oa->route_table->hook_add = hook_add;
1966 oa->route_table->hook_remove = hook_remove;
1967
1968 for (route = ospf6_route_head(oa->route_table); route; route = nroute) {
1969 nroute = ospf6_route_next(route);
1970 if (CHECK_FLAG(route->flag, OSPF6_ROUTE_REMOVE)
1971 && CHECK_FLAG(route->flag, OSPF6_ROUTE_ADD)) {
1972 UNSET_FLAG(route->flag, OSPF6_ROUTE_REMOVE);
1973 UNSET_FLAG(route->flag, OSPF6_ROUTE_ADD);
1974 }
1975
1976 if (CHECK_FLAG(route->flag, OSPF6_ROUTE_REMOVE))
1977 ospf6_route_remove(route, oa->route_table);
1978 else if (CHECK_FLAG(route->flag, OSPF6_ROUTE_ADD)
1979 || CHECK_FLAG(route->flag, OSPF6_ROUTE_CHANGE)) {
1980 if (hook_add)
1981 (*hook_add)(route);
1982 route->flag = 0;
1983 } else {
1984 /* Redo the summaries as things might have changed */
1985 ospf6_abr_originate_summary(route);
1986 route->flag = 0;
1987 }
1988 }
1989
1990 if (IS_OSPF6_DEBUG_EXAMIN(INTRA_PREFIX))
1991 zlog_debug("Re-examin intra-routes for area %s: Done",
1992 oa->name);
1993 }
1994
1995 static void ospf6_brouter_debug_print(struct ospf6_route *brouter)
1996 {
1997 uint32_t brouter_id;
1998 char brouter_name[16];
1999 char area_name[16];
2000 char destination[64];
2001 char installed[64], changed[64];
2002 struct timeval now, res;
2003 char id[16], adv_router[16];
2004 char capa[16], options[16];
2005
2006 brouter_id = ADV_ROUTER_IN_PREFIX(&brouter->prefix);
2007 inet_ntop(AF_INET, &brouter_id, brouter_name, sizeof(brouter_name));
2008 inet_ntop(AF_INET, &brouter->path.area_id, area_name,
2009 sizeof(area_name));
2010 ospf6_linkstate_prefix2str(&brouter->prefix, destination,
2011 sizeof(destination));
2012
2013 monotime(&now);
2014 timersub(&now, &brouter->installed, &res);
2015 timerstring(&res, installed, sizeof(installed));
2016
2017 monotime(&now);
2018 timersub(&now, &brouter->changed, &res);
2019 timerstring(&res, changed, sizeof(changed));
2020
2021 inet_ntop(AF_INET, &brouter->path.origin.id, id, sizeof(id));
2022 inet_ntop(AF_INET, &brouter->path.origin.adv_router, adv_router,
2023 sizeof(adv_router));
2024
2025 ospf6_options_printbuf(brouter->path.options, options, sizeof(options));
2026 ospf6_capability_printbuf(brouter->path.router_bits, capa,
2027 sizeof(capa));
2028
2029 zlog_info("Brouter: %s via area %s", brouter_name, area_name);
2030 zlog_info(" memory: prev: %p this: %p next: %p parent rnode: %p",
2031 (void *)brouter->prev, (void *)brouter, (void *)brouter->next,
2032 (void *)brouter->rnode);
2033 zlog_info(" type: %d prefix: %s installed: %s changed: %s",
2034 brouter->type, destination, installed, changed);
2035 zlog_info(" lock: %d flags: %s%s%s%s", brouter->lock,
2036 (CHECK_FLAG(brouter->flag, OSPF6_ROUTE_BEST) ? "B" : "-"),
2037 (CHECK_FLAG(brouter->flag, OSPF6_ROUTE_ADD) ? "A" : "-"),
2038 (CHECK_FLAG(brouter->flag, OSPF6_ROUTE_REMOVE) ? "R" : "-"),
2039 (CHECK_FLAG(brouter->flag, OSPF6_ROUTE_CHANGE) ? "C" : "-"));
2040 zlog_info(" path type: %s ls-origin %s id: %s adv-router %s",
2041 OSPF6_PATH_TYPE_NAME(brouter->path.type),
2042 ospf6_lstype_name(brouter->path.origin.type), id, adv_router);
2043 zlog_info(" options: %s router-bits: %s metric-type: %d metric: %d/%d",
2044 options, capa, brouter->path.metric_type, brouter->path.cost,
2045 brouter->path.u.cost_e2);
2046 zlog_info(" paths %u nh %u", listcount(brouter->paths),
2047 listcount(brouter->nh_list));
2048 }
2049
2050 void ospf6_intra_brouter_calculation(struct ospf6_area *oa)
2051 {
2052 struct ospf6_route *brouter, *nbrouter, *copy;
2053 void (*hook_add)(struct ospf6_route *) = NULL;
2054 void (*hook_remove)(struct ospf6_route *) = NULL;
2055 uint32_t brouter_id;
2056 char brouter_name[16];
2057
2058 if (IS_OSPF6_DEBUG_BROUTER_SPECIFIC_AREA_ID(oa->area_id) ||
2059 IS_OSPF6_DEBUG_ROUTE(MEMORY))
2060 zlog_info("%s: border-router calculation for area %s", __func__,
2061 oa->name);
2062
2063 hook_add = oa->ospf6->brouter_table->hook_add;
2064 hook_remove = oa->ospf6->brouter_table->hook_remove;
2065 oa->ospf6->brouter_table->hook_add = NULL;
2066 oa->ospf6->brouter_table->hook_remove = NULL;
2067
2068 /* withdraw the previous router entries for the area */
2069 for (brouter = ospf6_route_head(oa->ospf6->brouter_table); brouter;
2070 brouter = ospf6_route_next(brouter)) {
2071 brouter_id = ADV_ROUTER_IN_PREFIX(&brouter->prefix);
2072 inet_ntop(AF_INET, &brouter_id, brouter_name,
2073 sizeof(brouter_name));
2074
2075 if (brouter->path.area_id != oa->area_id)
2076 continue;
2077
2078 SET_FLAG(brouter->flag, OSPF6_ROUTE_REMOVE);
2079
2080 if (IS_OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER_ID(brouter_id)
2081 || IS_OSPF6_DEBUG_ROUTE(MEMORY)) {
2082 zlog_info("%p: mark as removing: area %s brouter %s",
2083 (void *)brouter, oa->name, brouter_name);
2084 ospf6_brouter_debug_print(brouter);
2085 }
2086 }
2087
2088 for (brouter = ospf6_route_head(oa->spf_table); brouter;
2089 brouter = ospf6_route_next(brouter)) {
2090 brouter_id = ADV_ROUTER_IN_PREFIX(&brouter->prefix);
2091 inet_ntop(AF_INET, &brouter_id, brouter_name,
2092 sizeof(brouter_name));
2093
2094 if (brouter->type != OSPF6_DEST_TYPE_LINKSTATE)
2095 continue;
2096
2097 if (ospf6_linkstate_prefix_id(&brouter->prefix) != htonl(0))
2098 continue;
2099
2100 if (!CHECK_FLAG(brouter->path.router_bits, OSPF6_ROUTER_BIT_E)
2101 && !CHECK_FLAG(brouter->path.router_bits,
2102 OSPF6_ROUTER_BIT_B))
2103 continue;
2104
2105 if (!OSPF6_OPT_ISSET(brouter->path.options, OSPF6_OPT_V6)
2106 || !OSPF6_OPT_ISSET(brouter->path.options, OSPF6_OPT_R))
2107 continue;
2108
2109 copy = ospf6_route_copy(brouter);
2110 copy->type = OSPF6_DEST_TYPE_ROUTER;
2111 copy->path.area_id = oa->area_id;
2112 ospf6_route_add(copy, oa->ospf6->brouter_table);
2113
2114 if (IS_OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER_ID(brouter_id)
2115 || IS_OSPF6_DEBUG_ROUTE(MEMORY)) {
2116 zlog_info("%p: transfer: area %s brouter %s",
2117 (void *)brouter, oa->name, brouter_name);
2118 ospf6_brouter_debug_print(brouter);
2119 }
2120 }
2121
2122 oa->ospf6->brouter_table->hook_add = hook_add;
2123 oa->ospf6->brouter_table->hook_remove = hook_remove;
2124
2125 for (brouter = ospf6_route_head(oa->ospf6->brouter_table); brouter;
2126 brouter = nbrouter) {
2127
2128 /*
2129 * brouter may have been "deleted" in the last loop iteration.
2130 * If this is the case there is still 1 final refcount lock
2131 * taken by ospf6_route_next, that will be released by the same
2132 * call and result in deletion. To avoid heap UAF we must then
2133 * skip processing the deleted route.
2134 */
2135 if (brouter->lock == 1) {
2136 if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
2137 ospf6_brouter_debug_print(brouter);
2138 nbrouter = ospf6_route_next(brouter);
2139 continue;
2140 } else {
2141 nbrouter = ospf6_route_next(brouter);
2142 }
2143
2144 brouter_id = ADV_ROUTER_IN_PREFIX(&brouter->prefix);
2145 inet_ntop(AF_INET, &brouter_id, brouter_name,
2146 sizeof(brouter_name));
2147
2148 if (brouter->path.area_id != oa->area_id)
2149 continue;
2150
2151 if (CHECK_FLAG(brouter->flag, OSPF6_ROUTE_WAS_REMOVED))
2152 continue;
2153
2154 /* After iterating spf_table for all routers including
2155 * intra brouter, clear mark for remove flag for
2156 * inter border router if its adv router present in
2157 * SPF table.
2158 */
2159 if (brouter->path.type == OSPF6_PATH_TYPE_INTER) {
2160 struct prefix adv_prefix;
2161
2162 ospf6_linkstate_prefix(brouter->path.origin.adv_router,
2163 htonl(0), &adv_prefix);
2164
2165 if (ospf6_route_lookup(&adv_prefix, oa->spf_table)) {
2166 if (IS_OSPF6_DEBUG_BROUTER) {
2167 zlog_debug(
2168 "%s: keep inter brouter %s as adv router 0x%x found in spf",
2169 __func__, brouter_name,
2170 brouter->path.origin
2171 .adv_router);
2172 ospf6_brouter_debug_print(brouter);
2173 }
2174 UNSET_FLAG(brouter->flag, OSPF6_ROUTE_REMOVE);
2175 }
2176 }
2177
2178 if (CHECK_FLAG(brouter->flag, OSPF6_ROUTE_REMOVE)
2179 && CHECK_FLAG(brouter->flag, OSPF6_ROUTE_ADD)) {
2180 UNSET_FLAG(brouter->flag, OSPF6_ROUTE_REMOVE);
2181 UNSET_FLAG(brouter->flag, OSPF6_ROUTE_ADD);
2182 }
2183
2184 if (CHECK_FLAG(brouter->flag, OSPF6_ROUTE_REMOVE)) {
2185 if (IS_OSPF6_DEBUG_BROUTER
2186 || IS_OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER_ID(
2187 brouter_id)
2188 || IS_OSPF6_DEBUG_BROUTER_SPECIFIC_AREA_ID(
2189 oa->area_id))
2190 zlog_info(
2191 "%s: brouter %s disappears via area %s",
2192 __func__, brouter_name, oa->name);
2193 /* This is used to protect nbrouter from removed from
2194 * the table. For an example, ospf6_abr_examin_summary,
2195 * removes brouters which are marked for remove.
2196 */
2197 oa->intra_brouter_calc = 1;
2198 ospf6_route_remove(brouter, oa->ospf6->brouter_table);
2199 brouter = NULL;
2200 } else if (CHECK_FLAG(brouter->flag, OSPF6_ROUTE_ADD)
2201 || CHECK_FLAG(brouter->flag, OSPF6_ROUTE_CHANGE)) {
2202 if (IS_OSPF6_DEBUG_BROUTER
2203 || IS_OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER_ID(
2204 brouter_id)
2205 || IS_OSPF6_DEBUG_BROUTER_SPECIFIC_AREA_ID(
2206 oa->area_id))
2207 zlog_info("%s: brouter %s appears via area %s",
2208 __func__, brouter_name, oa->name);
2209
2210 /* newly added */
2211 if (hook_add)
2212 (*hook_add)(brouter);
2213 } else {
2214 if (IS_OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER_ID(
2215 brouter_id)
2216 || IS_OSPF6_DEBUG_BROUTER_SPECIFIC_AREA_ID(
2217 oa->area_id))
2218 zlog_info("brouter %s still exists via area %s",
2219 brouter_name, oa->name);
2220 /* But re-originate summaries */
2221 ospf6_abr_originate_summary(brouter);
2222 }
2223
2224 if (brouter) {
2225 UNSET_FLAG(brouter->flag, OSPF6_ROUTE_ADD);
2226 UNSET_FLAG(brouter->flag, OSPF6_ROUTE_CHANGE);
2227 }
2228 /* Reset for nbrouter */
2229 oa->intra_brouter_calc = 0;
2230 }
2231
2232 if (IS_OSPF6_DEBUG_BROUTER_SPECIFIC_AREA_ID(oa->area_id) ||
2233 IS_OSPF6_DEBUG_ROUTE(MEMORY))
2234 zlog_info("%s: border-router calculation for area %s: done",
2235 __func__, oa->name);
2236 }
2237
2238 static const struct ospf6_lsa_handler router_handler = {
2239 .lh_type = OSPF6_LSTYPE_ROUTER,
2240 .lh_name = "Router",
2241 .lh_short_name = "Rtr",
2242 .lh_show = ospf6_router_lsa_show,
2243 .lh_get_prefix_str = ospf6_router_lsa_get_nbr_id,
2244 .lh_debug = 0};
2245
2246 static const struct ospf6_lsa_handler network_handler = {
2247 .lh_type = OSPF6_LSTYPE_NETWORK,
2248 .lh_name = "Network",
2249 .lh_short_name = "Net",
2250 .lh_show = ospf6_network_lsa_show,
2251 .lh_get_prefix_str = ospf6_network_lsa_get_ar_id,
2252 .lh_debug = 0};
2253
2254 static const struct ospf6_lsa_handler link_handler = {
2255 .lh_type = OSPF6_LSTYPE_LINK,
2256 .lh_name = "Link",
2257 .lh_short_name = "Lnk",
2258 .lh_show = ospf6_link_lsa_show,
2259 .lh_get_prefix_str = ospf6_link_lsa_get_prefix_str,
2260 .lh_debug = 0};
2261
2262 static const struct ospf6_lsa_handler intra_prefix_handler = {
2263 .lh_type = OSPF6_LSTYPE_INTRA_PREFIX,
2264 .lh_name = "Intra-Prefix",
2265 .lh_short_name = "INP",
2266 .lh_show = ospf6_intra_prefix_lsa_show,
2267 .lh_get_prefix_str = ospf6_intra_prefix_lsa_get_prefix_str,
2268 .lh_debug = 0};
2269
2270 void ospf6_intra_init(void)
2271 {
2272 ospf6_install_lsa_handler(&router_handler);
2273 ospf6_install_lsa_handler(&network_handler);
2274 ospf6_install_lsa_handler(&link_handler);
2275 ospf6_install_lsa_handler(&intra_prefix_handler);
2276 }
2277
2278 DEFUN (debug_ospf6_brouter,
2279 debug_ospf6_brouter_cmd,
2280 "debug ospf6 border-routers",
2281 DEBUG_STR
2282 OSPF6_STR
2283 "Debug border router\n"
2284 )
2285 {
2286 OSPF6_DEBUG_BROUTER_ON();
2287 return CMD_SUCCESS;
2288 }
2289
2290 DEFUN (no_debug_ospf6_brouter,
2291 no_debug_ospf6_brouter_cmd,
2292 "no debug ospf6 border-routers",
2293 NO_STR
2294 DEBUG_STR
2295 OSPF6_STR
2296 "Debug border router\n"
2297 )
2298 {
2299 OSPF6_DEBUG_BROUTER_OFF();
2300 return CMD_SUCCESS;
2301 }
2302
2303 DEFUN (debug_ospf6_brouter_router,
2304 debug_ospf6_brouter_router_cmd,
2305 "debug ospf6 border-routers router-id A.B.C.D",
2306 DEBUG_STR
2307 OSPF6_STR
2308 "Debug border router\n"
2309 "Debug specific border router\n"
2310 "Specify border-router's router-id\n"
2311 )
2312 {
2313 int idx_ipv4 = 4;
2314 uint32_t router_id;
2315 inet_pton(AF_INET, argv[idx_ipv4]->arg, &router_id);
2316 OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER_ON(router_id);
2317 return CMD_SUCCESS;
2318 }
2319
2320 DEFUN (no_debug_ospf6_brouter_router,
2321 no_debug_ospf6_brouter_router_cmd,
2322 "no debug ospf6 border-routers router-id",
2323 NO_STR
2324 DEBUG_STR
2325 OSPF6_STR
2326 "Debug border router\n"
2327 "Debug specific border router\n"
2328 )
2329 {
2330 OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER_OFF();
2331 return CMD_SUCCESS;
2332 }
2333
2334 DEFUN (debug_ospf6_brouter_area,
2335 debug_ospf6_brouter_area_cmd,
2336 "debug ospf6 border-routers area-id A.B.C.D",
2337 DEBUG_STR
2338 OSPF6_STR
2339 "Debug border router\n"
2340 "Debug border routers in specific Area\n"
2341 "Specify Area-ID\n"
2342 )
2343 {
2344 int idx_ipv4 = 4;
2345 uint32_t area_id;
2346 inet_pton(AF_INET, argv[idx_ipv4]->arg, &area_id);
2347 OSPF6_DEBUG_BROUTER_SPECIFIC_AREA_ON(area_id);
2348 return CMD_SUCCESS;
2349 }
2350
2351 DEFUN (no_debug_ospf6_brouter_area,
2352 no_debug_ospf6_brouter_area_cmd,
2353 "no debug ospf6 border-routers area-id",
2354 NO_STR
2355 DEBUG_STR
2356 OSPF6_STR
2357 "Debug border router\n"
2358 "Debug border routers in specific Area\n"
2359 )
2360 {
2361 OSPF6_DEBUG_BROUTER_SPECIFIC_AREA_OFF();
2362 return CMD_SUCCESS;
2363 }
2364
2365 int config_write_ospf6_debug_brouter(struct vty *vty)
2366 {
2367 char buf[16];
2368 if (IS_OSPF6_DEBUG_BROUTER)
2369 vty_out(vty, "debug ospf6 border-routers\n");
2370 if (IS_OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER) {
2371 inet_ntop(AF_INET, &conf_debug_ospf6_brouter_specific_router_id,
2372 buf, sizeof(buf));
2373 vty_out(vty, "debug ospf6 border-routers router-id %s\n", buf);
2374 }
2375 if (IS_OSPF6_DEBUG_BROUTER_SPECIFIC_AREA) {
2376 inet_ntop(AF_INET, &conf_debug_ospf6_brouter_specific_area_id,
2377 buf, sizeof(buf));
2378 vty_out(vty, "debug ospf6 border-routers area-id %s\n", buf);
2379 }
2380 return 0;
2381 }
2382
2383 void install_element_ospf6_debug_brouter(void)
2384 {
2385 install_element(ENABLE_NODE, &debug_ospf6_brouter_cmd);
2386 install_element(ENABLE_NODE, &debug_ospf6_brouter_router_cmd);
2387 install_element(ENABLE_NODE, &debug_ospf6_brouter_area_cmd);
2388 install_element(ENABLE_NODE, &no_debug_ospf6_brouter_cmd);
2389 install_element(ENABLE_NODE, &no_debug_ospf6_brouter_router_cmd);
2390 install_element(ENABLE_NODE, &no_debug_ospf6_brouter_area_cmd);
2391 install_element(CONFIG_NODE, &debug_ospf6_brouter_cmd);
2392 install_element(CONFIG_NODE, &debug_ospf6_brouter_router_cmd);
2393 install_element(CONFIG_NODE, &debug_ospf6_brouter_area_cmd);
2394 install_element(CONFIG_NODE, &no_debug_ospf6_brouter_cmd);
2395 install_element(CONFIG_NODE, &no_debug_ospf6_brouter_router_cmd);
2396 install_element(CONFIG_NODE, &no_debug_ospf6_brouter_area_cmd);
2397 }
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