Line data Source code
1 : /*
2 : * OSPF Flooding -- RFC2328 Section 13.
3 : * Copyright (C) 1999, 2000 Toshiaki Takada
4 : *
5 : * This file is part of GNU Zebra.
6 : *
7 : * GNU Zebra is free software; you can redistribute it and/or modify
8 : * it under the terms of the GNU General Public License as published
9 : * by the Free Software Foundation; either version 2, or (at your
10 : * option) any later version.
11 : *
12 : * GNU Zebra is distributed in the hope that it will be useful, but
13 : * WITHOUT ANY WARRANTY; without even the implied warranty of
14 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 : * General Public License for more details.
16 : *
17 : * You should have received a copy of the GNU General Public License along
18 : * with this program; see the file COPYING; if not, write to the Free Software
19 : * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 : */
21 :
22 : #include <zebra.h>
23 :
24 : #include "monotime.h"
25 : #include "linklist.h"
26 : #include "prefix.h"
27 : #include "if.h"
28 : #include "command.h"
29 : #include "table.h"
30 : #include "thread.h"
31 : #include "memory.h"
32 : #include "log.h"
33 : #include "zclient.h"
34 :
35 : #include "ospfd/ospfd.h"
36 : #include "ospfd/ospf_interface.h"
37 : #include "ospfd/ospf_ism.h"
38 : #include "ospfd/ospf_asbr.h"
39 : #include "ospfd/ospf_lsa.h"
40 : #include "ospfd/ospf_lsdb.h"
41 : #include "ospfd/ospf_neighbor.h"
42 : #include "ospfd/ospf_nsm.h"
43 : #include "ospfd/ospf_spf.h"
44 : #include "ospfd/ospf_flood.h"
45 : #include "ospfd/ospf_packet.h"
46 : #include "ospfd/ospf_abr.h"
47 : #include "ospfd/ospf_route.h"
48 : #include "ospfd/ospf_zebra.h"
49 : #include "ospfd/ospf_dump.h"
50 :
51 : extern struct zclient *zclient;
52 :
53 : /* Do the LSA acking specified in table 19, Section 13.5, row 2
54 : * This get called from ospf_flood_out_interface. Declared inline
55 : * for speed. */
56 52 : static void ospf_flood_delayed_lsa_ack(struct ospf_neighbor *inbr,
57 : struct ospf_lsa *lsa)
58 : {
59 : /* LSA is more recent than database copy, but was not
60 : flooded back out receiving interface. Delayed
61 : acknowledgment sent. If interface is in Backup state
62 : delayed acknowledgment sent only if advertisement
63 : received from Designated Router, otherwise do nothing See
64 : RFC 2328 Section 13.5 */
65 :
66 : /* Whether LSA is more recent or not, and whether this is in
67 : response to the LSA being sent out recieving interface has been
68 : worked out previously */
69 :
70 : /* Deal with router as BDR */
71 52 : if (inbr->oi->state == ISM_Backup && !NBR_IS_DR(inbr))
72 : return;
73 :
74 : /* Schedule a delayed LSA Ack to be sent */
75 51 : listnode_add(inbr->oi->ls_ack,
76 51 : ospf_lsa_lock(lsa)); /* delayed LSA Ack */
77 : }
78 :
79 : /* Check LSA is related to external info. */
80 0 : struct external_info *ospf_external_info_check(struct ospf *ospf,
81 : struct ospf_lsa *lsa)
82 : {
83 0 : struct as_external_lsa *al;
84 0 : struct prefix_ipv4 p;
85 0 : struct route_node *rn;
86 0 : struct list *ext_list;
87 0 : struct listnode *node;
88 0 : struct ospf_external *ext;
89 0 : int type;
90 :
91 0 : al = (struct as_external_lsa *)lsa->data;
92 :
93 0 : p.family = AF_INET;
94 0 : p.prefix = lsa->data->id;
95 0 : p.prefixlen = ip_masklen(al->mask);
96 :
97 0 : for (type = 0; type < ZEBRA_ROUTE_MAX; type++) {
98 0 : int redist_on = 0;
99 :
100 0 : redist_on =
101 0 : is_default_prefix4(&p)
102 0 : ? vrf_bitmap_check(
103 0 : zclient->default_information[AFI_IP],
104 : ospf->vrf_id)
105 0 : : (zclient->mi_redist[AFI_IP][type].enabled
106 0 : || vrf_bitmap_check(
107 : zclient->redist[AFI_IP][type],
108 : ospf->vrf_id));
109 : // Pending: check for MI above.
110 0 : if (redist_on) {
111 0 : ext_list = ospf->external[type];
112 0 : if (!ext_list)
113 0 : continue;
114 :
115 0 : for (ALL_LIST_ELEMENTS_RO(ext_list, node, ext)) {
116 0 : rn = NULL;
117 0 : if (ext->external_info)
118 0 : rn = route_node_lookup(
119 : ext->external_info,
120 : (struct prefix *)&p);
121 0 : if (rn) {
122 0 : route_unlock_node(rn);
123 0 : if (rn->info != NULL)
124 0 : return (struct external_info *)
125 : rn->info;
126 : }
127 : }
128 : }
129 : }
130 :
131 0 : if (is_default_prefix4(&p) && ospf->external[DEFAULT_ROUTE]) {
132 0 : ext_list = ospf->external[DEFAULT_ROUTE];
133 :
134 0 : for (ALL_LIST_ELEMENTS_RO(ext_list, node, ext)) {
135 0 : if (!ext->external_info)
136 0 : continue;
137 :
138 0 : rn = route_node_lookup(ext->external_info,
139 : (struct prefix *)&p);
140 0 : if (!rn)
141 0 : continue;
142 0 : route_unlock_node(rn);
143 0 : if (rn->info != NULL)
144 0 : return (struct external_info *)rn->info;
145 : }
146 : }
147 : return NULL;
148 : }
149 :
150 0 : static void ospf_process_self_originated_lsa(struct ospf *ospf,
151 : struct ospf_lsa *new,
152 : struct ospf_area *area)
153 : {
154 0 : struct ospf_interface *oi;
155 0 : struct external_info *ei;
156 0 : struct listnode *node;
157 0 : struct as_external_lsa *al;
158 0 : struct prefix_ipv4 p;
159 0 : struct ospf_external_aggr_rt *aggr;
160 :
161 0 : if (IS_DEBUG_OSPF_EVENT)
162 0 : zlog_debug(
163 : "%s:LSA[Type%d:%pI4]: Process self-originated LSA seq 0x%x",
164 : ospf_get_name(ospf), new->data->type,
165 : &new->data->id, ntohl(new->data->ls_seqnum));
166 :
167 : /* If we're here, we installed a self-originated LSA that we received
168 : from a neighbor, i.e. it's more recent. We must see whether we want
169 : to originate it.
170 : If yes, we should use this LSA's sequence number and reoriginate
171 : a new instance.
172 : if not --- we must flush this LSA from the domain. */
173 0 : switch (new->data->type) {
174 0 : case OSPF_ROUTER_LSA:
175 : /* Originate a new instance and schedule flooding */
176 0 : if (area->router_lsa_self)
177 0 : area->router_lsa_self->data->ls_seqnum =
178 0 : new->data->ls_seqnum;
179 0 : ospf_router_lsa_update_area(area);
180 0 : return;
181 0 : case OSPF_NETWORK_LSA:
182 : case OSPF_OPAQUE_LINK_LSA:
183 : /* We must find the interface the LSA could belong to.
184 : If the interface is no more a broadcast type or we are no
185 : more
186 : the DR, we flush the LSA otherwise -- create the new instance
187 : and
188 : schedule flooding. */
189 :
190 : /* Look through all interfaces, not just area, since interface
191 : could be moved from one area to another. */
192 0 : for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi))
193 : /* These are sanity check. */
194 0 : if (IPV4_ADDR_SAME(&oi->address->u.prefix4,
195 : &new->data->id)) {
196 0 : if (oi->area != area
197 0 : || oi->type != OSPF_IFTYPE_BROADCAST
198 0 : || !IPV4_ADDR_SAME(&oi->address->u.prefix4,
199 : &DR(oi))) {
200 0 : ospf_schedule_lsa_flush_area(area, new);
201 0 : return;
202 : }
203 :
204 0 : if (new->data->type == OSPF_OPAQUE_LINK_LSA) {
205 0 : ospf_opaque_lsa_refresh(new);
206 0 : return;
207 : }
208 :
209 0 : if (oi->network_lsa_self)
210 0 : oi->network_lsa_self->data->ls_seqnum =
211 0 : new->data->ls_seqnum;
212 : /* Schedule network-LSA origination. */
213 0 : ospf_network_lsa_update(oi);
214 0 : return;
215 : }
216 : break;
217 0 : case OSPF_SUMMARY_LSA:
218 : case OSPF_ASBR_SUMMARY_LSA:
219 0 : ospf_schedule_abr_task(ospf);
220 0 : break;
221 0 : case OSPF_AS_EXTERNAL_LSA:
222 : case OSPF_AS_NSSA_LSA:
223 0 : if ((new->data->type == OSPF_AS_EXTERNAL_LSA)
224 0 : && CHECK_FLAG(new->flags, OSPF_LSA_LOCAL_XLT)) {
225 0 : ospf_translated_nssa_refresh(ospf, NULL, new);
226 0 : return;
227 : }
228 :
229 0 : al = (struct as_external_lsa *)new->data;
230 0 : p.family = AF_INET;
231 0 : p.prefixlen = ip_masklen(al->mask);
232 0 : p.prefix = new->data->id;
233 :
234 0 : ei = ospf_external_info_check(ospf, new);
235 0 : if (ei) {
236 0 : if (ospf_external_aggr_match(ospf, &ei->p)) {
237 0 : if (IS_DEBUG_OSPF(lsa, EXTNL_LSA_AGGR))
238 0 : zlog_debug(
239 : "%s, Matching external aggregate route found for %pI4, so don't refresh it.",
240 : __func__,
241 : &ei->p.prefix);
242 :
243 : /* Aggregated external route shouldn't
244 : * be in LSDB.
245 : */
246 0 : if (!IS_LSA_MAXAGE(new))
247 0 : ospf_lsa_flush_as(ospf, new);
248 :
249 0 : return;
250 : }
251 :
252 0 : ospf_external_lsa_refresh(ospf, new, ei,
253 : LSA_REFRESH_FORCE, false);
254 : } else {
255 0 : aggr = (struct ospf_external_aggr_rt *)
256 : ospf_extrenal_aggregator_lookup(ospf, &p);
257 0 : if (aggr) {
258 0 : struct external_info ei_aggr;
259 :
260 0 : memset(&ei_aggr, 0,
261 : sizeof(struct external_info));
262 0 : ei_aggr.p = aggr->p;
263 0 : ei_aggr.tag = aggr->tag;
264 0 : ei_aggr.instance = ospf->instance;
265 0 : ei_aggr.route_map_set.metric = -1;
266 0 : ei_aggr.route_map_set.metric_type = -1;
267 :
268 0 : ospf_external_lsa_refresh(ospf, new, &ei_aggr,
269 : LSA_REFRESH_FORCE, true);
270 0 : SET_FLAG(aggr->flags,
271 : OSPF_EXTERNAL_AGGRT_ORIGINATED);
272 : } else
273 0 : ospf_lsa_flush_as(ospf, new);
274 : }
275 : break;
276 0 : case OSPF_OPAQUE_AREA_LSA:
277 0 : ospf_opaque_lsa_refresh(new);
278 0 : break;
279 0 : case OSPF_OPAQUE_AS_LSA:
280 0 : ospf_opaque_lsa_refresh(new);
281 : /* Reconsideration may needed. */ /* XXX */
282 0 : break;
283 : default:
284 : break;
285 : }
286 : }
287 :
288 : /* OSPF LSA flooding -- RFC2328 Section 13.(5). */
289 :
290 : /* Now Updated for NSSA operation, as follows:
291 :
292 :
293 : Type-5's have no change. Blocked to STUB or NSSA.
294 :
295 : Type-7's can be received, and if a DR
296 : they will also flood the local NSSA Area as Type-7's
297 :
298 : If a Self-Originated LSA (now an ASBR),
299 : The LSDB will be updated as Type-5's, (for continual re-fresh)
300 :
301 : If an NSSA-IR it is installed/flooded as Type-7, P-bit on.
302 : if an NSSA-ABR it is installed/flooded as Type-7, P-bit off.
303 :
304 : Later, during the ABR TASK, if the ABR is the Elected NSSA
305 : translator, then All Type-7s (with P-bit ON) are Translated to
306 : Type-5's and flooded to all non-NSSA/STUB areas.
307 :
308 : During ASE Calculations,
309 : non-ABRs calculate external routes from Type-7's
310 : ABRs calculate external routes from Type-5's and non-self Type-7s
311 : */
312 83 : int ospf_flood(struct ospf *ospf, struct ospf_neighbor *nbr,
313 : struct ospf_lsa *current, struct ospf_lsa *new)
314 : {
315 83 : struct ospf_interface *oi;
316 83 : int lsa_ack_flag;
317 :
318 : /* Type-7 LSA's will be flooded throughout their native NSSA area,
319 : but will also be flooded as Type-5's into ABR capable links. */
320 :
321 83 : if (IS_DEBUG_OSPF_EVENT)
322 83 : zlog_debug(
323 : "%s:LSA[Flooding]: start, NBR %pI4 (%s), cur(%p), New-LSA[%s]",
324 : ospf_get_name(ospf), &nbr->router_id,
325 : lookup_msg(ospf_nsm_state_msg, nbr->state, NULL),
326 : (void *)current, dump_lsa_key(new));
327 :
328 83 : oi = nbr->oi;
329 :
330 : /* If there is already a database copy, and if the
331 : database copy was received via flooding and installed less
332 : than MinLSArrival seconds ago, discard the new LSA
333 : (without acknowledging it). */
334 83 : if (current != NULL) /* -- endo. */
335 : {
336 47 : if (IS_LSA_SELF(current)
337 0 : && (ntohs(current->data->ls_age) == 0
338 0 : && ntohl(current->data->ls_seqnum)
339 : == OSPF_INITIAL_SEQUENCE_NUMBER)) {
340 0 : if (IS_DEBUG_OSPF_EVENT)
341 0 : zlog_debug(
342 : "%s:LSA[Flooding]: Got a self-originated LSA, while local one is initial instance.",
343 : ospf_get_name(ospf));
344 : ; /* Accept this LSA for quick LSDB resynchronization.
345 : */
346 47 : } else if (monotime_since(¤t->tv_recv, NULL)
347 47 : < ospf->min_ls_arrival * 1000LL) {
348 25 : if (IS_DEBUG_OSPF_EVENT)
349 25 : zlog_debug(
350 : "%s:LSA[Flooding]: LSA is received recently.",
351 : ospf_get_name(ospf));
352 25 : return -1;
353 : }
354 : }
355 :
356 : /* Flood the new LSA out some subset of the router's interfaces.
357 : In some cases (e.g., the state of the receiving interface is
358 : DR and the LSA was received from a router other than the
359 : Backup DR) the LSA will be flooded back out the receiving
360 : interface. */
361 58 : lsa_ack_flag = ospf_flood_through(ospf, nbr, new);
362 :
363 : /* Remove the current database copy from all neighbors' Link state
364 : retransmission lists. AS_EXTERNAL and AS_EXTERNAL_OPAQUE does
365 : ^^^^^^^^^^^^^^^^^^^^^^^
366 : not have area ID.
367 : All other (even NSSA's) do have area ID. */
368 58 : if (current) {
369 22 : switch (current->data->type) {
370 2 : case OSPF_AS_EXTERNAL_LSA:
371 : case OSPF_OPAQUE_AS_LSA:
372 2 : ospf_ls_retransmit_delete_nbr_as(ospf, current);
373 2 : break;
374 20 : default:
375 20 : ospf_ls_retransmit_delete_nbr_area(oi->area, current);
376 20 : break;
377 : }
378 : }
379 :
380 : /* Do some internal house keeping that is needed here */
381 58 : SET_FLAG(new->flags, OSPF_LSA_RECEIVED);
382 58 : (void)ospf_lsa_is_self_originated(ospf, new); /* Let it set the flag */
383 :
384 : /* Received non-self-originated Grace LSA */
385 58 : if (IS_GRACE_LSA(new) && !IS_LSA_SELF(new)) {
386 :
387 0 : if (IS_LSA_MAXAGE(new)) {
388 :
389 : /* Handling Max age grace LSA.*/
390 0 : if (IS_DEBUG_OSPF_GR)
391 0 : zlog_debug(
392 : "%s, Received a maxage GRACE-LSA from router %pI4",
393 : __func__, &new->data->adv_router);
394 :
395 0 : if (current) {
396 0 : ospf_process_maxage_grace_lsa(ospf, new, nbr);
397 : } else {
398 0 : if (IS_DEBUG_OSPF_GR)
399 0 : zlog_debug(
400 : "%s, Grace LSA doesn't exist in lsdb, so discarding grace lsa",
401 : __func__);
402 0 : return -1;
403 : }
404 : } else {
405 0 : if (IS_DEBUG_OSPF_GR)
406 0 : zlog_debug(
407 : "%s, Received a GRACE-LSA from router %pI4",
408 : __func__, &new->data->adv_router);
409 :
410 0 : if (ospf_process_grace_lsa(ospf, new, nbr)
411 : == OSPF_GR_NOT_HELPER) {
412 0 : if (IS_DEBUG_OSPF_GR)
413 0 : zlog_debug(
414 : "%s, Not moving to HELPER role, So discarding grace LSA",
415 : __func__);
416 0 : return -1;
417 : }
418 : }
419 : }
420 :
421 : /* Install the new LSA in the link state database
422 : (replacing the current database copy). This may cause the
423 : routing table calculation to be scheduled. In addition,
424 : timestamp the new LSA with the current time. The flooding
425 : procedure cannot overwrite the newly installed LSA until
426 : MinLSArrival seconds have elapsed. */
427 :
428 58 : if (!(new = ospf_lsa_install(ospf, oi, new)))
429 : return -1; /* unknown LSA type or any other error condition */
430 :
431 : /* Acknowledge the receipt of the LSA by sending a Link State
432 : Acknowledgment packet back out the receiving interface. */
433 58 : if (lsa_ack_flag)
434 52 : ospf_flood_delayed_lsa_ack(nbr, new);
435 :
436 : /* If this new LSA indicates that it was originated by the
437 : receiving router itself, the router must take special action,
438 : either updating the LSA or in some cases flushing it from
439 : the routing domain. */
440 58 : if (ospf_lsa_is_self_originated(ospf, new))
441 0 : ospf_process_self_originated_lsa(ospf, new, oi->area);
442 : else
443 : /* Update statistics value for OSPF-MIB. */
444 58 : ospf->rx_lsa_count++;
445 :
446 : return 0;
447 : }
448 :
449 : /* OSPF LSA flooding -- RFC2328 Section 13.3. */
450 317 : int ospf_flood_through_interface(struct ospf_interface *oi,
451 : struct ospf_neighbor *inbr,
452 : struct ospf_lsa *lsa)
453 : {
454 317 : struct ospf_neighbor *onbr;
455 317 : struct route_node *rn;
456 317 : int retx_flag;
457 :
458 317 : if (IS_DEBUG_OSPF_EVENT)
459 317 : zlog_debug(
460 : "%s: considering int %s (%s), INBR(%pI4), LSA[%s] AGE %u",
461 : __func__, IF_NAME(oi), ospf_get_name(oi->ospf),
462 : inbr ? &inbr->router_id : NULL, dump_lsa_key(lsa),
463 : ntohs(lsa->data->ls_age));
464 :
465 317 : if (!ospf_if_is_enable(oi))
466 : return 0;
467 :
468 : /* Remember if new LSA is added to a retransmit list. */
469 317 : retx_flag = 0;
470 :
471 : /* Each of the neighbors attached to this interface are examined,
472 : to determine whether they must receive the new LSA. The following
473 : steps are executed for each neighbor: */
474 1028 : for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) {
475 711 : struct ospf_lsa *ls_req;
476 :
477 711 : if (rn->info == NULL)
478 197 : continue;
479 :
480 514 : onbr = rn->info;
481 514 : if (IS_DEBUG_OSPF_EVENT)
482 514 : zlog_debug(
483 : "%s: considering nbr %pI4 via %s (%s), state: %s",
484 : __func__, &onbr->router_id, IF_NAME(oi),
485 : ospf_get_name(oi->ospf),
486 : lookup_msg(ospf_nsm_state_msg, onbr->state,
487 : NULL));
488 :
489 : /* If the neighbor is in a lesser state than Exchange, it
490 : does not participate in flooding, and the next neighbor
491 : should be examined. */
492 514 : if (onbr->state < NSM_Exchange)
493 357 : continue;
494 :
495 : /* If the adjacency is not yet full (neighbor state is
496 : Exchange or Loading), examine the Link state request
497 : list associated with this adjacency. If there is an
498 : instance of the new LSA on the list, it indicates that
499 : the neighboring router has an instance of the LSA
500 : already. Compare the new LSA to the neighbor's copy: */
501 157 : if (onbr->state < NSM_Full) {
502 48 : if (IS_DEBUG_OSPF_EVENT)
503 48 : zlog_debug(
504 : "%s: adj to onbr %pI4 is not Full (%s)",
505 : __func__, &onbr->router_id,
506 : lookup_msg(ospf_nsm_state_msg,
507 : onbr->state, NULL));
508 96 : ls_req = ospf_ls_request_lookup(onbr, lsa);
509 48 : if (ls_req != NULL) {
510 21 : int ret;
511 :
512 21 : ret = ospf_lsa_more_recent(ls_req, lsa);
513 : /* The new LSA is less recent. */
514 21 : if (ret > 0)
515 0 : continue;
516 : /* The two copies are the same instance, then
517 : delete
518 : the LSA from the Link state request list. */
519 21 : else if (ret == 0) {
520 21 : ospf_ls_request_delete(onbr, ls_req);
521 21 : ospf_check_nbr_loading(onbr);
522 21 : continue;
523 : }
524 : /* The new LSA is more recent. Delete the LSA
525 : from the Link state request list. */
526 : else {
527 0 : ospf_ls_request_delete(onbr, ls_req);
528 0 : ospf_check_nbr_loading(onbr);
529 : }
530 : }
531 : }
532 :
533 136 : if (IS_OPAQUE_LSA(lsa->data->type)) {
534 0 : if (!CHECK_FLAG(onbr->options, OSPF_OPTION_O)) {
535 0 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
536 0 : zlog_debug(
537 : "%s: Skipping neighbor %s via %pI4 -- Not Opaque-capable.",
538 : __func__, IF_NAME(oi),
539 : &onbr->router_id);
540 0 : continue;
541 : }
542 : }
543 :
544 : /* If the new LSA was received from this neighbor,
545 : examine the next neighbor. */
546 136 : if (inbr) {
547 : /*
548 : * Triggered by LSUpd message parser "ospf_ls_upd ()".
549 : * E.g., all LSAs handling here is received via network.
550 : */
551 69 : if (IPV4_ADDR_SAME(&inbr->router_id,
552 : &onbr->router_id)) {
553 40 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
554 0 : zlog_debug(
555 : "%s: Skipping neighbor %s via %pI4 -- inbr == onbr.",
556 : __func__, IF_NAME(oi),
557 : &inbr->router_id);
558 40 : continue;
559 : }
560 : } else {
561 : /*
562 : * Triggered by MaxAge remover, so far.
563 : * NULL "inbr" means flooding starts from this node.
564 : */
565 67 : if (IPV4_ADDR_SAME(&lsa->data->adv_router,
566 : &onbr->router_id)) {
567 0 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
568 0 : zlog_debug(
569 : "%s: Skipping neighbor %s via %pI4 -- lsah->adv_router == onbr.",
570 : __func__, IF_NAME(oi),
571 : &onbr->router_id);
572 0 : continue;
573 : }
574 : }
575 :
576 : /* Add the new LSA to the Link state retransmission list
577 : for the adjacency. The LSA will be retransmitted
578 : at intervals until an acknowledgment is seen from
579 : the neighbor. */
580 96 : ospf_ls_retransmit_add(onbr, lsa);
581 96 : retx_flag = 1;
582 : }
583 :
584 : /* If in the previous step, the LSA was NOT added to any of
585 : the Link state retransmission lists, there is no need to
586 : flood the LSA out the interface. */
587 317 : if (retx_flag == 0) {
588 232 : return (inbr && inbr->oi == oi);
589 : }
590 :
591 : /* if we've received the lsa on this interface we need to perform
592 : additional checking */
593 85 : if (inbr && (inbr->oi == oi)) {
594 : /* If the new LSA was received on this interface, and it was
595 : received from either the Designated Router or the Backup
596 : Designated Router, chances are that all the neighbors have
597 : received the LSA already. */
598 27 : if (NBR_IS_DR(inbr) || NBR_IS_BDR(inbr)) {
599 20 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
600 0 : zlog_debug("%s: DR/BDR NOT SEND to int %s (%s)",
601 : __func__, IF_NAME(oi),
602 : ospf_get_name(oi->ospf));
603 20 : return 1;
604 : }
605 :
606 : /* If the new LSA was received on this interface, and the
607 : interface state is Backup, examine the next interface. The
608 : Designated Router will do the flooding on this interface.
609 : However, if the Designated Router fails the router will
610 : end up retransmitting the updates. */
611 :
612 7 : if (oi->state == ISM_Backup) {
613 1 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
614 0 : zlog_debug(
615 : "%s: ISM_Backup NOT SEND to int %s (%s)",
616 : __func__, IF_NAME(oi),
617 : ospf_get_name(oi->ospf));
618 1 : return 1;
619 : }
620 : }
621 :
622 : /* The LSA must be flooded out the interface. Send a Link State
623 : Update packet (including the new LSA as contents) out the
624 : interface. The LSA's LS age must be incremented by InfTransDelay
625 : (which must be > 0) when it is copied into the outgoing Link
626 : State Update packet (until the LS age field reaches the maximum
627 : value of MaxAge). */
628 64 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
629 0 : zlog_debug("%s: DR/BDR sending upd to int %s (%s)", __func__,
630 : IF_NAME(oi), ospf_get_name(oi->ospf));
631 :
632 : /* RFC2328 Section 13.3
633 : On non-broadcast networks, separate Link State Update
634 : packets must be sent, as unicasts, to each adjacent neighbor
635 : (i.e., those in state Exchange or greater). The destination
636 : IP addresses for these packets are the neighbors' IP
637 : addresses. */
638 64 : if (oi->type == OSPF_IFTYPE_NBMA) {
639 0 : struct ospf_neighbor *nbr;
640 :
641 0 : for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) {
642 0 : nbr = rn->info;
643 :
644 0 : if (!nbr)
645 0 : continue;
646 0 : if (nbr != oi->nbr_self && nbr->state >= NSM_Exchange)
647 0 : ospf_ls_upd_send_lsa(nbr, lsa,
648 : OSPF_SEND_PACKET_DIRECT);
649 : }
650 : } else
651 : /* Optimization: for P2MP interfaces,
652 : don't send back out the incoming interface immediately,
653 : allow time to rx multicast ack to the rx'ed (multicast)
654 : update */
655 64 : if (retx_flag != 1 ||
656 0 : oi->type != OSPF_IFTYPE_POINTOMULTIPOINT || inbr == NULL ||
657 0 : oi != inbr->oi)
658 64 : ospf_ls_upd_send_lsa(oi->nbr_self, lsa,
659 : OSPF_SEND_PACKET_INDIRECT);
660 :
661 : return 0;
662 : }
663 :
664 169 : int ospf_flood_through_area(struct ospf_area *area, struct ospf_neighbor *inbr,
665 : struct ospf_lsa *lsa)
666 : {
667 169 : struct listnode *node, *nnode;
668 169 : struct ospf_interface *oi;
669 169 : int lsa_ack_flag = 0;
670 :
671 169 : assert(area);
672 : /* All other types are specific to a single area (Area A). The
673 : eligible interfaces are all those interfaces attaching to the
674 : Area A. If Area A is the backbone, this includes all the virtual
675 : links. */
676 607 : for (ALL_LIST_ELEMENTS(area->oiflist, node, nnode, oi)) {
677 269 : if (area->area_id.s_addr != OSPF_AREA_BACKBONE
678 96 : && oi->type == OSPF_IFTYPE_VIRTUALLINK)
679 0 : continue;
680 :
681 269 : if ((lsa->data->type == OSPF_OPAQUE_LINK_LSA)
682 0 : && (lsa->oi != oi)) {
683 : /*
684 : * Link local scoped Opaque-LSA should only be flooded
685 : * for the link on which the LSA has received.
686 : */
687 0 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
688 0 : zlog_debug(
689 : "Type-9 Opaque-LSA: lsa->oi(%p) != oi(%p)",
690 : (void *)lsa->oi, (void *)oi);
691 0 : continue;
692 : }
693 :
694 269 : if (ospf_flood_through_interface(oi, inbr, lsa))
695 269 : lsa_ack_flag = 1;
696 : }
697 :
698 169 : return (lsa_ack_flag);
699 : }
700 :
701 22 : int ospf_flood_through_as(struct ospf *ospf, struct ospf_neighbor *inbr,
702 : struct ospf_lsa *lsa)
703 : {
704 22 : struct listnode *node;
705 22 : struct ospf_area *area;
706 22 : int lsa_ack_flag;
707 :
708 22 : lsa_ack_flag = 0;
709 :
710 : /* The incoming LSA is type 5 or type 7 (AS-EXTERNAL or AS-NSSA )
711 :
712 : Divert the Type-5 LSA's to all non-NSSA/STUB areas
713 :
714 : Divert the Type-7 LSA's to all NSSA areas
715 :
716 : AS-external-LSAs are flooded throughout the entire AS, with the
717 : exception of stub areas (see Section 3.6). The eligible
718 : interfaces are all the router's interfaces, excluding virtual
719 : links and those interfaces attaching to stub areas. */
720 :
721 22 : if (CHECK_FLAG(lsa->flags, OSPF_LSA_LOCAL_XLT)) /* Translated from 7 */
722 0 : if (IS_DEBUG_OSPF_NSSA)
723 0 : zlog_debug("Flood/AS: NSSA TRANSLATED LSA");
724 :
725 71 : for (ALL_LIST_ELEMENTS_RO(ospf->areas, node, area)) {
726 27 : int continue_flag = 0;
727 27 : struct listnode *if_node;
728 27 : struct ospf_interface *oi;
729 :
730 27 : switch (area->external_routing) {
731 : /* Don't send AS externals into stub areas. Various types
732 : of support for partial stub areas can be implemented
733 : here. NSSA's will receive Type-7's that have areas
734 : matching the originl LSA. */
735 0 : case OSPF_AREA_NSSA: /* Sending Type 5 or 7 into NSSA area */
736 : /* Type-7, flood NSSA area */
737 0 : if (lsa->data->type == OSPF_AS_NSSA_LSA
738 0 : && area == lsa->area)
739 : /* We will send it. */
740 : continue_flag = 0;
741 : else
742 : continue_flag = 1; /* Skip this NSSA area for
743 : Type-5's et al */
744 : break;
745 :
746 : case OSPF_AREA_TYPE_MAX:
747 : case OSPF_AREA_STUB:
748 : continue_flag = 1; /* Skip this area. */
749 : break;
750 :
751 27 : case OSPF_AREA_DEFAULT:
752 : default:
753 : /* No Type-7 into normal area */
754 27 : if (lsa->data->type == OSPF_AS_NSSA_LSA)
755 : continue_flag = 1; /* skip Type-7 */
756 : else
757 : continue_flag = 0; /* Do this area. */
758 : break;
759 : }
760 :
761 : /* Do continue for above switch. Saves a big if then mess */
762 0 : if (continue_flag)
763 0 : continue; /* main for-loop */
764 :
765 : /* send to every interface in this area */
766 :
767 102 : for (ALL_LIST_ELEMENTS_RO(area->oiflist, if_node, oi)) {
768 : /* Skip virtual links */
769 48 : if (oi->type != OSPF_IFTYPE_VIRTUALLINK)
770 48 : if (ospf_flood_through_interface(oi, inbr,
771 : lsa)) /* lsa */
772 48 : lsa_ack_flag = 1;
773 : }
774 : } /* main area for-loop */
775 :
776 22 : return (lsa_ack_flag);
777 : }
778 :
779 58 : int ospf_flood_through(struct ospf *ospf, struct ospf_neighbor *inbr,
780 : struct ospf_lsa *lsa)
781 : {
782 58 : int lsa_ack_flag = 0;
783 :
784 : /* Type-7 LSA's for NSSA are flooded throughout the AS here, and
785 : upon return are updated in the LSDB for Type-7's. Later,
786 : re-fresh will re-send them (and also, if ABR, packet code will
787 : translate to Type-5's)
788 :
789 : As usual, Type-5 LSA's (if not DISCARDED because we are STUB or
790 : NSSA) are flooded throughout the AS, and are updated in the
791 : global table. */
792 : /*
793 : * At the common sub-sub-function "ospf_flood_through_interface()",
794 : * a parameter "inbr" will be used to distinguish the called context
795 : * whether the given LSA was received from the neighbor, or the
796 : * flooding for the LSA starts from this node (e.g. the LSA was self-
797 : * originated, or the LSA is going to be flushed from routing domain).
798 : *
799 : * So, for consistency reasons, this function "ospf_flood_through()"
800 : * should also allow the usage that the given "inbr" parameter to be
801 : * NULL. If we do so, corresponding AREA parameter should be referred
802 : * by "lsa->area", instead of "inbr->oi->area".
803 : */
804 58 : switch (lsa->data->type) {
805 14 : case OSPF_AS_EXTERNAL_LSA: /* Type-5 */
806 : case OSPF_OPAQUE_AS_LSA:
807 14 : lsa_ack_flag = ospf_flood_through_as(ospf, inbr, lsa);
808 14 : break;
809 : /* Type-7 Only received within NSSA, then flooded */
810 0 : case OSPF_AS_NSSA_LSA:
811 : /* Any P-bit was installed with the Type-7. */
812 :
813 0 : if (IS_DEBUG_OSPF_NSSA)
814 0 : zlog_debug("%s: LOCAL NSSA FLOOD of Type-7.", __func__);
815 : /* Fallthrough */
816 : default:
817 44 : lsa_ack_flag = ospf_flood_through_area(lsa->area, inbr, lsa);
818 44 : break;
819 : }
820 :
821 : /* always need to send ack when incoming intf is PTP or P2MP */
822 58 : if (inbr != NULL && (inbr->oi->type == OSPF_IFTYPE_POINTOMULTIPOINT ||
823 : inbr->oi->type == OSPF_IFTYPE_POINTOPOINT))
824 58 : lsa_ack_flag = 1;
825 :
826 58 : return (lsa_ack_flag);
827 : }
828 :
829 :
830 : /* Management functions for neighbor's Link State Request list. */
831 21 : void ospf_ls_request_add(struct ospf_neighbor *nbr, struct ospf_lsa *lsa)
832 : {
833 : /*
834 : * We cannot make use of the newly introduced callback function
835 : * "lsdb->new_lsa_hook" to replace debug output below, just because
836 : * it seems no simple and smart way to pass neighbor information to
837 : * the common function "ospf_lsdb_add()" -- endo.
838 : */
839 21 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
840 0 : zlog_debug("RqstL(%lu)++, NBR(%pI4(%s)), LSA[%s]",
841 : ospf_ls_request_count(nbr),
842 : &nbr->router_id,
843 : ospf_get_name(nbr->oi->ospf), dump_lsa_key(lsa));
844 :
845 21 : ospf_lsdb_add(&nbr->ls_req, lsa);
846 21 : }
847 :
848 80 : unsigned long ospf_ls_request_count(struct ospf_neighbor *nbr)
849 : {
850 80 : return ospf_lsdb_count_all(&nbr->ls_req);
851 : }
852 :
853 30 : int ospf_ls_request_isempty(struct ospf_neighbor *nbr)
854 : {
855 30 : return ospf_lsdb_isempty(&nbr->ls_req);
856 : }
857 :
858 : /* Remove LSA from neighbor's ls-request list. */
859 21 : void ospf_ls_request_delete(struct ospf_neighbor *nbr, struct ospf_lsa *lsa)
860 : {
861 21 : if (nbr->ls_req_last == lsa) {
862 8 : ospf_lsa_unlock(&nbr->ls_req_last);
863 8 : nbr->ls_req_last = NULL;
864 : }
865 :
866 21 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING)) /* -- endo. */
867 0 : zlog_debug("RqstL(%lu)--, NBR(%pI4(%s)), LSA[%s]",
868 : ospf_ls_request_count(nbr),
869 : &nbr->router_id,
870 : ospf_get_name(nbr->oi->ospf), dump_lsa_key(lsa));
871 :
872 21 : ospf_lsdb_delete(&nbr->ls_req, lsa);
873 21 : }
874 :
875 : /* Remove all LSA from neighbor's ls-requenst list. */
876 0 : void ospf_ls_request_delete_all(struct ospf_neighbor *nbr)
877 : {
878 0 : ospf_lsa_unlock(&nbr->ls_req_last);
879 0 : nbr->ls_req_last = NULL;
880 0 : ospf_lsdb_delete_all(&nbr->ls_req);
881 0 : }
882 :
883 : /* Lookup LSA from neighbor's ls-request list. */
884 77 : struct ospf_lsa *ospf_ls_request_lookup(struct ospf_neighbor *nbr,
885 : struct ospf_lsa *lsa)
886 : {
887 77 : return ospf_lsdb_lookup(&nbr->ls_req, lsa);
888 : }
889 :
890 22 : struct ospf_lsa *ospf_ls_request_new(struct lsa_header *lsah)
891 : {
892 22 : struct ospf_lsa *new;
893 :
894 22 : new = ospf_lsa_new_and_data(OSPF_LSA_HEADER_SIZE);
895 22 : memcpy(new->data, lsah, OSPF_LSA_HEADER_SIZE);
896 :
897 22 : return new;
898 : }
899 :
900 :
901 : /* Management functions for neighbor's ls-retransmit list. */
902 80 : unsigned long ospf_ls_retransmit_count(struct ospf_neighbor *nbr)
903 : {
904 80 : return ospf_lsdb_count_all(&nbr->ls_rxmt);
905 : }
906 :
907 0 : unsigned long ospf_ls_retransmit_count_self(struct ospf_neighbor *nbr,
908 : int lsa_type)
909 : {
910 0 : return ospf_lsdb_count_self(&nbr->ls_rxmt, lsa_type);
911 : }
912 :
913 8 : int ospf_ls_retransmit_isempty(struct ospf_neighbor *nbr)
914 : {
915 8 : return ospf_lsdb_isempty(&nbr->ls_rxmt);
916 : }
917 :
918 : /* Add LSA to be retransmitted to neighbor's ls-retransmit list. */
919 96 : void ospf_ls_retransmit_add(struct ospf_neighbor *nbr, struct ospf_lsa *lsa)
920 : {
921 96 : struct ospf_lsa *old;
922 :
923 192 : old = ospf_ls_retransmit_lookup(nbr, lsa);
924 :
925 96 : if (ospf_lsa_more_recent(old, lsa) < 0) {
926 93 : if (old) {
927 2 : old->retransmit_counter--;
928 2 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
929 0 : zlog_debug("RXmtL(%lu)--, NBR(%pI4(%s)), LSA[%s]",
930 : ospf_ls_retransmit_count(nbr),
931 : &nbr->router_id,
932 : ospf_get_name(nbr->oi->ospf),
933 : dump_lsa_key(old));
934 2 : ospf_lsdb_delete(&nbr->ls_rxmt, old);
935 : }
936 93 : lsa->retransmit_counter++;
937 : /*
938 : * We cannot make use of the newly introduced callback function
939 : * "lsdb->new_lsa_hook" to replace debug output below, just
940 : * because
941 : * it seems no simple and smart way to pass neighbor information
942 : * to
943 : * the common function "ospf_lsdb_add()" -- endo.
944 : */
945 93 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING))
946 0 : zlog_debug("RXmtL(%lu)++, NBR(%pI4(%s)), LSA[%s]",
947 : ospf_ls_retransmit_count(nbr),
948 : &nbr->router_id,
949 : ospf_get_name(nbr->oi->ospf),
950 : dump_lsa_key(lsa));
951 93 : ospf_lsdb_add(&nbr->ls_rxmt, lsa);
952 : }
953 96 : }
954 :
955 : /* Remove LSA from neibghbor's ls-retransmit list. */
956 91 : void ospf_ls_retransmit_delete(struct ospf_neighbor *nbr, struct ospf_lsa *lsa)
957 : {
958 91 : if (ospf_ls_retransmit_lookup(nbr, lsa)) {
959 91 : lsa->retransmit_counter--;
960 91 : if (IS_DEBUG_OSPF(lsa, LSA_FLOODING)) /* -- endo. */
961 0 : zlog_debug("RXmtL(%lu)--, NBR(%pI4(%s)), LSA[%s]",
962 : ospf_ls_retransmit_count(nbr),
963 : &nbr->router_id,
964 : ospf_get_name(nbr->oi->ospf),
965 : dump_lsa_key(lsa));
966 91 : ospf_lsdb_delete(&nbr->ls_rxmt, lsa);
967 : }
968 91 : }
969 :
970 : /* Clear neighbor's ls-retransmit list. */
971 5 : void ospf_ls_retransmit_clear(struct ospf_neighbor *nbr)
972 : {
973 5 : struct ospf_lsdb *lsdb;
974 5 : int i;
975 :
976 5 : lsdb = &nbr->ls_rxmt;
977 :
978 60 : for (i = OSPF_MIN_LSA; i < OSPF_MAX_LSA; i++) {
979 55 : struct route_table *table = lsdb->type[i].db;
980 55 : struct route_node *rn;
981 55 : struct ospf_lsa *lsa;
982 :
983 72 : for (rn = route_top(table); rn; rn = route_next(rn))
984 17 : if ((lsa = rn->info) != NULL)
985 13 : ospf_ls_retransmit_delete(nbr, lsa);
986 : }
987 :
988 5 : ospf_lsa_unlock(&nbr->ls_req_last);
989 5 : nbr->ls_req_last = NULL;
990 5 : }
991 :
992 : /* Lookup LSA from neighbor's ls-retransmit list. */
993 843 : struct ospf_lsa *ospf_ls_retransmit_lookup(struct ospf_neighbor *nbr,
994 : struct ospf_lsa *lsa)
995 : {
996 301 : return ospf_lsdb_lookup(&nbr->ls_rxmt, lsa);
997 : }
998 :
999 351 : static void ospf_ls_retransmit_delete_nbr_if(struct ospf_interface *oi,
1000 : struct ospf_lsa *lsa)
1001 : {
1002 351 : struct route_node *rn;
1003 351 : struct ospf_neighbor *nbr;
1004 351 : struct ospf_lsa *lsr;
1005 :
1006 351 : if (ospf_if_is_enable(oi))
1007 1084 : for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) {
1008 : /* If LSA find in LS-retransmit list, then remove it. */
1009 733 : nbr = rn->info;
1010 :
1011 733 : if (!nbr)
1012 191 : continue;
1013 :
1014 542 : lsr = ospf_ls_retransmit_lookup(nbr, lsa);
1015 :
1016 : /* If LSA find in ls-retransmit list, remove it. */
1017 542 : if (lsr != NULL &&
1018 42 : lsr->data->ls_seqnum == lsa->data->ls_seqnum)
1019 26 : ospf_ls_retransmit_delete(nbr, lsr);
1020 : }
1021 351 : }
1022 :
1023 236 : void ospf_ls_retransmit_delete_nbr_area(struct ospf_area *area,
1024 : struct ospf_lsa *lsa)
1025 : {
1026 236 : struct listnode *node, *nnode;
1027 236 : struct ospf_interface *oi;
1028 :
1029 811 : for (ALL_LIST_ELEMENTS(area->oiflist, node, nnode, oi))
1030 339 : ospf_ls_retransmit_delete_nbr_if(oi, lsa);
1031 236 : }
1032 :
1033 20 : void ospf_ls_retransmit_delete_nbr_as(struct ospf *ospf, struct ospf_lsa *lsa)
1034 : {
1035 20 : struct listnode *node, *nnode;
1036 20 : struct ospf_interface *oi;
1037 :
1038 52 : for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi))
1039 12 : ospf_ls_retransmit_delete_nbr_if(oi, lsa);
1040 20 : }
1041 :
1042 :
1043 : /* Sets ls_age to MaxAge and floods throu the area.
1044 : When we implement ASE routing, there will be another function
1045 : flushing an LSA from the whole domain. */
1046 26 : void ospf_lsa_flush_area(struct ospf_lsa *lsa, struct ospf_area *area)
1047 : {
1048 26 : struct ospf *ospf = area->ospf;
1049 :
1050 26 : if (ospf_lsa_is_self_originated(ospf, lsa)
1051 26 : && ospf->gr_info.restart_in_progress) {
1052 0 : if (IS_DEBUG_OSPF(lsa, LSA_GENERATE))
1053 0 : zlog_debug(
1054 : "%s:LSA[Type%d:%pI4]: Graceful Restart in progress -- not flushing self-originated LSA",
1055 : ospf_get_name(ospf), lsa->data->type,
1056 : &lsa->data->id);
1057 0 : return;
1058 : }
1059 :
1060 : /* Reset the lsa origination time such that it gives
1061 : more time for the ACK to be received and avoid
1062 : retransmissions */
1063 26 : lsa->data->ls_age = htons(OSPF_LSA_MAXAGE);
1064 26 : if (IS_DEBUG_OSPF_EVENT)
1065 26 : zlog_debug("%s: MaxAge set to LSA[%s]", __func__,
1066 : dump_lsa_key(lsa));
1067 26 : monotime(&lsa->tv_recv);
1068 26 : lsa->tv_orig = lsa->tv_recv;
1069 26 : ospf_flood_through_area(area, NULL, lsa);
1070 26 : ospf_lsa_maxage(ospf, lsa);
1071 : }
1072 :
1073 4 : void ospf_lsa_flush_as(struct ospf *ospf, struct ospf_lsa *lsa)
1074 : {
1075 4 : if (ospf_lsa_is_self_originated(ospf, lsa)
1076 4 : && ospf->gr_info.restart_in_progress) {
1077 0 : if (IS_DEBUG_OSPF(lsa, LSA_GENERATE))
1078 0 : zlog_debug(
1079 : "%s:LSA[Type%d:%pI4]: Graceful Restart in progress -- not flushing self-originated LSA",
1080 : ospf_get_name(ospf), lsa->data->type,
1081 : &lsa->data->id);
1082 0 : return;
1083 : }
1084 :
1085 : /* Reset the lsa origination time such that it gives
1086 : more time for the ACK to be received and avoid
1087 : retransmissions */
1088 4 : lsa->data->ls_age = htons(OSPF_LSA_MAXAGE);
1089 4 : if (IS_DEBUG_OSPF_EVENT)
1090 4 : zlog_debug("%s: MaxAge set to LSA[%s]", __func__,
1091 : dump_lsa_key(lsa));
1092 4 : monotime(&lsa->tv_recv);
1093 4 : lsa->tv_orig = lsa->tv_recv;
1094 4 : ospf_flood_through_as(ospf, NULL, lsa);
1095 4 : ospf_lsa_maxage(ospf, lsa);
1096 : }
1097 :
1098 13 : void ospf_lsa_flush(struct ospf *ospf, struct ospf_lsa *lsa)
1099 : {
1100 13 : lsa->data->ls_age = htons(OSPF_LSA_MAXAGE);
1101 :
1102 13 : switch (lsa->data->type) {
1103 9 : case OSPF_ROUTER_LSA:
1104 : case OSPF_NETWORK_LSA:
1105 : case OSPF_SUMMARY_LSA:
1106 : case OSPF_ASBR_SUMMARY_LSA:
1107 : case OSPF_AS_NSSA_LSA:
1108 : case OSPF_OPAQUE_LINK_LSA:
1109 : case OSPF_OPAQUE_AREA_LSA:
1110 9 : ospf_lsa_flush_area(lsa, lsa->area);
1111 9 : break;
1112 4 : case OSPF_AS_EXTERNAL_LSA:
1113 : case OSPF_OPAQUE_AS_LSA:
1114 4 : ospf_lsa_flush_as(ospf, lsa);
1115 4 : break;
1116 0 : default:
1117 0 : zlog_info("%s: Unknown LSA type %u", __func__, lsa->data->type);
1118 0 : break;
1119 : }
1120 13 : }
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