2 * OSPF Interface functions.
3 * Copyright (C) 1999, 2000 Toshiaki Takada
5 * This file is part of GNU Zebra.
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.
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.
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
37 #include "ospfd/ospfd.h"
38 #include "ospfd/ospf_bfd.h"
39 #include "ospfd/ospf_spf.h"
40 #include "ospfd/ospf_interface.h"
41 #include "ospfd/ospf_ism.h"
42 #include "ospfd/ospf_asbr.h"
43 #include "ospfd/ospf_lsa.h"
44 #include "ospfd/ospf_lsdb.h"
45 #include "ospfd/ospf_neighbor.h"
46 #include "ospfd/ospf_nsm.h"
47 #include "ospfd/ospf_packet.h"
48 #include "ospfd/ospf_abr.h"
49 #include "ospfd/ospf_network.h"
50 #include "ospfd/ospf_dump.h"
51 #include "ospfd/ospf_ldp_sync.h"
52 #include "ospfd/ospf_route.h"
53 #include "ospfd/ospf_te.h"
55 DEFINE_QOBJ_TYPE(ospf_interface
);
56 DEFINE_HOOK(ospf_vl_add
, (struct ospf_vl_data
* vd
), (vd
));
57 DEFINE_HOOK(ospf_vl_delete
, (struct ospf_vl_data
* vd
), (vd
));
58 DEFINE_HOOK(ospf_if_update
, (struct interface
* ifp
), (ifp
));
59 DEFINE_HOOK(ospf_if_delete
, (struct interface
* ifp
), (ifp
));
61 int ospf_interface_neighbor_count(struct ospf_interface
*oi
)
64 struct route_node
*rn
;
65 struct ospf_neighbor
*nbr
= NULL
;
67 for (rn
= route_top(oi
->nbrs
); rn
; rn
= route_next(rn
)) {
72 /* Do not show myself. */
73 if (nbr
== oi
->nbr_self
)
75 /* Down state is not shown. */
76 if (nbr
->state
== NSM_Down
)
84 int ospf_if_get_output_cost(struct ospf_interface
*oi
)
86 /* If all else fails, use default OSPF cost */
90 /* if LDP-IGP Sync is running on interface set cost so interface
91 * is used only as last resort
93 if (ldp_sync_if_is_enabled(IF_DEF_PARAMS(oi
->ifp
)->ldp_sync_info
))
94 return (LDP_OSPF_LSINFINITY
);
96 /* ifp speed and bw can be 0 in some platforms, use ospf default bw
97 if bw is configured under interface it would be used.
99 if (!oi
->ifp
->bandwidth
&& oi
->ifp
->speed
)
102 bw
= oi
->ifp
->bandwidth
? oi
->ifp
->bandwidth
103 : OSPF_DEFAULT_BANDWIDTH
;
104 refbw
= oi
->ospf
->ref_bandwidth
;
106 /* A specified ip ospf cost overrides a calculated one. */
107 if (OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS(oi
->ifp
), output_cost_cmd
)
108 || OSPF_IF_PARAM_CONFIGURED(oi
->params
, output_cost_cmd
))
109 cost
= OSPF_IF_PARAM(oi
, output_cost_cmd
);
110 /* See if a cost can be calculated from the zebra processes
111 interface bandwidth field. */
113 cost
= (uint32_t)((double)refbw
/ (double)bw
+ (double)0.5);
116 else if (cost
> 65535)
123 void ospf_if_recalculate_output_cost(struct interface
*ifp
)
126 struct route_node
*rn
;
128 for (rn
= route_top(IF_OIFS(ifp
)); rn
; rn
= route_next(rn
)) {
129 struct ospf_interface
*oi
;
131 if ((oi
= rn
->info
) == NULL
)
134 newcost
= ospf_if_get_output_cost(oi
);
136 /* Is actual output cost changed? */
137 if (oi
->output_cost
!= newcost
) {
138 oi
->output_cost
= newcost
;
139 ospf_router_lsa_update_area(oi
->area
);
144 /* Simulate down/up on the interface. This is needed, for example, when
146 void ospf_if_reset(struct interface
*ifp
)
148 struct route_node
*rn
;
150 for (rn
= route_top(IF_OIFS(ifp
)); rn
; rn
= route_next(rn
)) {
151 struct ospf_interface
*oi
;
153 if ((oi
= rn
->info
) == NULL
)
161 void ospf_if_reset_variables(struct ospf_interface
*oi
)
163 /* Set default values. */
164 /* don't clear this flag. oi->flag = OSPF_IF_DISABLE; */
167 oi
->type
= OSPF_IFTYPE_VIRTUALLINK
;
169 /* preserve network-type */
170 if (oi
->type
!= OSPF_IFTYPE_NBMA
)
171 oi
->type
= OSPF_IFTYPE_BROADCAST
;
173 oi
->state
= ISM_Down
;
175 oi
->crypt_seqnum
= 0;
177 /* This must be short, (less than RxmtInterval)
178 - RFC 2328 Section 13.5 para 3. Set to 1 second to avoid Acks being
179 held back for too long - MAG */
183 /* lookup oi for specified prefix/ifp */
184 struct ospf_interface
*ospf_if_table_lookup(struct interface
*ifp
,
185 struct prefix
*prefix
)
188 struct route_node
*rn
;
189 struct ospf_interface
*rninfo
= NULL
;
192 p
.prefixlen
= IPV4_MAX_BITLEN
;
194 /* route_node_get implicitely locks */
195 if ((rn
= route_node_lookup(IF_OIFS(ifp
), &p
))) {
196 rninfo
= (struct ospf_interface
*)rn
->info
;
197 route_unlock_node(rn
);
203 static void ospf_add_to_if(struct interface
*ifp
, struct ospf_interface
*oi
)
205 struct route_node
*rn
;
209 p
.prefixlen
= IPV4_MAX_BITLEN
;
212 rn
= route_node_get(IF_OIFS(ifp
), &p
);
213 /* rn->info should either be NULL or equal to this oi
214 * as route_node_get may return an existing node
216 assert(!rn
->info
|| rn
->info
== oi
);
220 static void ospf_delete_from_if(struct interface
*ifp
,
221 struct ospf_interface
*oi
)
223 struct route_node
*rn
;
227 p
.prefixlen
= IPV4_MAX_BITLEN
;
229 rn
= route_node_lookup(IF_OIFS(oi
->ifp
), &p
);
233 route_unlock_node(rn
);
234 route_unlock_node(rn
);
237 struct ospf_interface
*ospf_if_new(struct ospf
*ospf
, struct interface
*ifp
,
240 struct ospf_interface
*oi
;
242 oi
= ospf_if_table_lookup(ifp
, p
);
246 oi
= XCALLOC(MTYPE_OSPF_IF
, sizeof(struct ospf_interface
));
248 oi
->obuf
= ospf_fifo_new();
250 /* Set zebra interface pointer. */
254 ospf_add_to_if(ifp
, oi
);
255 listnode_add(ospf
->oiflist
, oi
);
257 /* Initialize neighbor list. */
258 oi
->nbrs
= route_table_init();
260 /* Initialize static neighbor list. */
261 oi
->nbr_nbma
= list_new();
263 /* Initialize Link State Acknowledgment list. */
264 oi
->ls_ack
= list_new();
265 oi
->ls_ack_direct
.ls_ack
= list_new();
267 /* Set default values. */
268 ospf_if_reset_variables(oi
);
270 /* Set pseudo neighbor to Null */
273 oi
->ls_upd_queue
= route_table_init();
274 oi
->t_ls_upd_event
= NULL
;
275 oi
->t_ls_ack_direct
= NULL
;
277 oi
->crypt_seqnum
= time(NULL
);
279 ospf_opaque_type9_lsa_init(oi
);
283 QOBJ_REG(oi
, ospf_interface
);
285 if (IS_DEBUG_OSPF_EVENT
)
286 zlog_debug("%s: ospf interface %s vrf %s id %u created",
287 __func__
, ifp
->name
, ospf_get_name(ospf
),
293 /* Restore an interface to its pre UP state
294 Used from ism_interface_down only */
295 void ospf_if_cleanup(struct ospf_interface
*oi
)
297 struct route_node
*rn
;
298 struct listnode
*node
, *nnode
;
299 struct ospf_neighbor
*nbr
;
300 struct ospf_nbr_nbma
*nbr_nbma
;
301 struct ospf_lsa
*lsa
;
303 /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */
304 /* delete all static neighbors attached to this interface */
305 for (ALL_LIST_ELEMENTS(oi
->nbr_nbma
, node
, nnode
, nbr_nbma
)) {
306 THREAD_OFF(nbr_nbma
->t_poll
);
309 nbr_nbma
->nbr
->nbr_nbma
= NULL
;
310 nbr_nbma
->nbr
= NULL
;
315 listnode_delete(oi
->nbr_nbma
, nbr_nbma
);
318 /* send Neighbor event KillNbr to all associated neighbors. */
319 for (rn
= route_top(oi
->nbrs
); rn
; rn
= route_next(rn
)) {
320 if ((nbr
= rn
->info
) != NULL
)
321 if (nbr
!= oi
->nbr_self
)
322 OSPF_NSM_EVENT_EXECUTE(nbr
, NSM_KillNbr
);
325 /* Cleanup Link State Acknowlegdment list. */
326 for (ALL_LIST_ELEMENTS(oi
->ls_ack
, node
, nnode
, lsa
))
327 ospf_lsa_unlock(&lsa
); /* oi->ls_ack */
328 list_delete_all_node(oi
->ls_ack
);
330 oi
->crypt_seqnum
= 0;
332 /* Empty link state update queue */
333 ospf_ls_upd_queue_empty(oi
);
335 /* Reset pseudo neighbor. */
336 ospf_nbr_self_reset(oi
, oi
->ospf
->router_id
);
339 void ospf_if_free(struct ospf_interface
*oi
)
343 ospf_fifo_free(oi
->obuf
);
345 assert(oi
->state
== ISM_Down
);
347 ospf_opaque_type9_lsa_term(oi
);
351 /* Free Pseudo Neighbour */
352 ospf_nbr_delete(oi
->nbr_self
);
354 route_table_finish(oi
->nbrs
);
355 route_table_finish(oi
->ls_upd_queue
);
357 /* Free any lists that should be freed */
358 list_delete(&oi
->nbr_nbma
);
360 list_delete(&oi
->ls_ack
);
361 list_delete(&oi
->ls_ack_direct
.ls_ack
);
363 if (IS_DEBUG_OSPF_EVENT
)
364 zlog_debug("%s: ospf interface %s vrf %s id %u deleted",
365 __func__
, oi
->ifp
->name
, oi
->ifp
->vrf
->name
,
366 oi
->ifp
->vrf
->vrf_id
);
368 ospf_delete_from_if(oi
->ifp
, oi
);
370 listnode_delete(oi
->ospf
->oiflist
, oi
);
371 listnode_delete(oi
->area
->oiflist
, oi
);
373 thread_cancel_event(master
, oi
);
375 memset(oi
, 0, sizeof(*oi
));
376 XFREE(MTYPE_OSPF_IF
, oi
);
379 int ospf_if_is_up(struct ospf_interface
*oi
)
381 return if_is_up(oi
->ifp
);
384 struct ospf_interface
*ospf_if_exists(struct ospf_interface
*oic
)
386 struct listnode
*node
;
388 struct ospf_interface
*oi
;
397 for (ALL_LIST_ELEMENTS_RO(ospf
->oiflist
, node
, oi
))
404 /* Lookup OSPF interface by router LSA posistion */
405 struct ospf_interface
*ospf_if_lookup_by_lsa_pos(struct ospf_area
*area
,
408 struct listnode
*node
;
409 struct ospf_interface
*oi
;
411 for (ALL_LIST_ELEMENTS_RO(area
->oiflist
, node
, oi
)) {
412 if (lsa_pos
>= oi
->lsa_pos_beg
&& lsa_pos
< oi
->lsa_pos_end
)
418 struct ospf_interface
*ospf_if_lookup_by_local_addr(struct ospf
*ospf
,
419 struct interface
*ifp
,
420 struct in_addr address
)
422 struct listnode
*node
;
423 struct ospf_interface
*oi
;
425 for (ALL_LIST_ELEMENTS_RO(ospf
->oiflist
, node
, oi
))
426 if (oi
->type
!= OSPF_IFTYPE_VIRTUALLINK
) {
427 if (ifp
&& oi
->ifp
!= ifp
)
430 if (IPV4_ADDR_SAME(&address
, &oi
->address
->u
.prefix4
))
437 struct ospf_interface
*ospf_if_lookup_by_prefix(struct ospf
*ospf
,
438 struct prefix_ipv4
*p
)
440 struct listnode
*node
;
441 struct ospf_interface
*oi
;
443 /* Check each Interface. */
444 for (ALL_LIST_ELEMENTS_RO(ospf
->oiflist
, node
, oi
)) {
445 if (oi
->type
!= OSPF_IFTYPE_VIRTUALLINK
) {
448 prefix_copy(&ptmp
, CONNECTED_PREFIX(oi
->connected
));
450 if (prefix_same(&ptmp
, (struct prefix
*)p
))
457 /* determine receiving interface by ifp and source address */
458 struct ospf_interface
*ospf_if_lookup_recv_if(struct ospf
*ospf
,
460 struct interface
*ifp
)
462 struct route_node
*rn
;
463 struct prefix_ipv4 addr
;
464 struct ospf_interface
*oi
, *match
, *unnumbered_match
;
466 addr
.family
= AF_INET
;
468 addr
.prefixlen
= IPV4_MAX_BITLEN
;
470 match
= unnumbered_match
= NULL
;
472 for (rn
= route_top(IF_OIFS(ifp
)); rn
; rn
= route_next(rn
)) {
475 if (!oi
) /* oi can be NULL for PtP aliases */
478 if (oi
->type
== OSPF_IFTYPE_VIRTUALLINK
)
481 if (if_is_loopback(oi
->ifp
))
484 if (CHECK_FLAG(oi
->connected
->flags
, ZEBRA_IFA_UNNUMBERED
))
485 unnumbered_match
= oi
;
486 else if (prefix_match(CONNECTED_PREFIX(oi
->connected
),
487 (struct prefix
*)&addr
)) {
488 if ((match
== NULL
) || (match
->address
->prefixlen
489 < oi
->address
->prefixlen
))
497 return unnumbered_match
;
500 void ospf_interface_fifo_flush(struct ospf_interface
*oi
)
502 struct ospf
*ospf
= oi
->ospf
;
504 ospf_fifo_flush(oi
->obuf
);
506 if (oi
->on_write_q
) {
507 listnode_delete(ospf
->oi_write_q
, oi
);
508 if (list_isempty(ospf
->oi_write_q
))
509 THREAD_OFF(ospf
->t_write
);
514 static void ospf_if_reset_stats(struct ospf_interface
*oi
)
516 oi
->hello_in
= oi
->hello_out
= 0;
517 oi
->db_desc_in
= oi
->db_desc_out
= 0;
518 oi
->ls_req_in
= oi
->ls_req_out
= 0;
519 oi
->ls_upd_in
= oi
->ls_upd_out
= 0;
520 oi
->ls_ack_in
= oi
->ls_ack_out
= 0;
523 void ospf_if_stream_unset(struct ospf_interface
*oi
)
525 /* flush the interface packet queue */
526 ospf_interface_fifo_flush(oi
);
527 /*reset protocol stats */
528 ospf_if_reset_stats(oi
);
532 static struct ospf_if_params
*ospf_new_if_params(void)
534 struct ospf_if_params
*oip
;
536 oip
= XCALLOC(MTYPE_OSPF_IF_PARAMS
, sizeof(struct ospf_if_params
));
538 UNSET_IF_PARAM(oip
, output_cost_cmd
);
539 UNSET_IF_PARAM(oip
, transmit_delay
);
540 UNSET_IF_PARAM(oip
, retransmit_interval
);
541 UNSET_IF_PARAM(oip
, passive_interface
);
542 UNSET_IF_PARAM(oip
, v_hello
);
543 UNSET_IF_PARAM(oip
, fast_hello
);
544 UNSET_IF_PARAM(oip
, v_wait
);
545 UNSET_IF_PARAM(oip
, priority
);
546 UNSET_IF_PARAM(oip
, type
);
547 UNSET_IF_PARAM(oip
, auth_simple
);
548 UNSET_IF_PARAM(oip
, auth_crypt
);
549 UNSET_IF_PARAM(oip
, auth_type
);
550 UNSET_IF_PARAM(oip
, if_area
);
552 oip
->auth_crypt
= list_new();
554 oip
->network_lsa_seqnum
= htonl(OSPF_INITIAL_SEQUENCE_NUMBER
);
555 oip
->is_v_wait_set
= false;
562 static void ospf_del_if_params(struct interface
*ifp
,
563 struct ospf_if_params
*oip
)
565 list_delete(&oip
->auth_crypt
);
566 ospf_interface_disable_bfd(ifp
, oip
);
567 ldp_sync_info_free(&(oip
->ldp_sync_info
));
568 XFREE(MTYPE_OSPF_IF_PARAMS
, oip
);
571 void ospf_free_if_params(struct interface
*ifp
, struct in_addr addr
)
573 struct ospf_if_params
*oip
;
574 struct prefix_ipv4 p
;
575 struct route_node
*rn
;
578 p
.prefixlen
= IPV4_MAX_BITLEN
;
580 rn
= route_node_lookup(IF_OIFS_PARAMS(ifp
), (struct prefix
*)&p
);
581 if (!rn
|| !rn
->info
)
585 route_unlock_node(rn
);
587 if (!OSPF_IF_PARAM_CONFIGURED(oip
, output_cost_cmd
)
588 && !OSPF_IF_PARAM_CONFIGURED(oip
, transmit_delay
)
589 && !OSPF_IF_PARAM_CONFIGURED(oip
, retransmit_interval
)
590 && !OSPF_IF_PARAM_CONFIGURED(oip
, passive_interface
)
591 && !OSPF_IF_PARAM_CONFIGURED(oip
, v_hello
)
592 && !OSPF_IF_PARAM_CONFIGURED(oip
, fast_hello
)
593 && !OSPF_IF_PARAM_CONFIGURED(oip
, v_wait
)
594 && !OSPF_IF_PARAM_CONFIGURED(oip
, priority
)
595 && !OSPF_IF_PARAM_CONFIGURED(oip
, type
)
596 && !OSPF_IF_PARAM_CONFIGURED(oip
, auth_simple
)
597 && !OSPF_IF_PARAM_CONFIGURED(oip
, auth_type
)
598 && !OSPF_IF_PARAM_CONFIGURED(oip
, if_area
)
599 && listcount(oip
->auth_crypt
) == 0) {
600 ospf_del_if_params(ifp
, oip
);
602 route_unlock_node(rn
);
606 struct ospf_if_params
*ospf_lookup_if_params(struct interface
*ifp
,
609 struct prefix_ipv4 p
;
610 struct route_node
*rn
;
613 p
.prefixlen
= IPV4_MAX_BITLEN
;
616 rn
= route_node_lookup(IF_OIFS_PARAMS(ifp
), (struct prefix
*)&p
);
619 route_unlock_node(rn
);
626 struct ospf_if_params
*ospf_get_if_params(struct interface
*ifp
,
629 struct prefix_ipv4 p
;
630 struct route_node
*rn
;
633 p
.prefixlen
= IPV4_MAX_BITLEN
;
637 rn
= route_node_get(IF_OIFS_PARAMS(ifp
), (struct prefix
*)&p
);
639 if (rn
->info
== NULL
)
640 rn
->info
= ospf_new_if_params();
642 route_unlock_node(rn
);
647 void ospf_if_update_params(struct interface
*ifp
, struct in_addr addr
)
649 struct route_node
*rn
;
650 struct ospf_interface
*oi
;
652 for (rn
= route_top(IF_OIFS(ifp
)); rn
; rn
= route_next(rn
)) {
653 if ((oi
= rn
->info
) == NULL
)
656 if (IPV4_ADDR_SAME(&oi
->address
->u
.prefix4
, &addr
))
657 oi
->params
= ospf_lookup_if_params(
658 ifp
, oi
->address
->u
.prefix4
);
662 int ospf_if_new_hook(struct interface
*ifp
)
666 ifp
->info
= XCALLOC(MTYPE_OSPF_IF_INFO
, sizeof(struct ospf_if_info
));
668 IF_OIFS(ifp
) = route_table_init();
669 IF_OIFS_PARAMS(ifp
) = route_table_init();
671 IF_DEF_PARAMS(ifp
) = ospf_new_if_params();
673 SET_IF_PARAM(IF_DEF_PARAMS(ifp
), transmit_delay
);
674 IF_DEF_PARAMS(ifp
)->transmit_delay
= OSPF_TRANSMIT_DELAY_DEFAULT
;
676 SET_IF_PARAM(IF_DEF_PARAMS(ifp
), retransmit_interval
);
677 IF_DEF_PARAMS(ifp
)->retransmit_interval
=
678 OSPF_RETRANSMIT_INTERVAL_DEFAULT
;
680 SET_IF_PARAM(IF_DEF_PARAMS(ifp
), priority
);
681 IF_DEF_PARAMS(ifp
)->priority
= OSPF_ROUTER_PRIORITY_DEFAULT
;
683 IF_DEF_PARAMS(ifp
)->mtu_ignore
= OSPF_MTU_IGNORE_DEFAULT
;
685 SET_IF_PARAM(IF_DEF_PARAMS(ifp
), v_hello
);
686 IF_DEF_PARAMS(ifp
)->v_hello
= OSPF_HELLO_INTERVAL_DEFAULT
;
688 SET_IF_PARAM(IF_DEF_PARAMS(ifp
), fast_hello
);
689 IF_DEF_PARAMS(ifp
)->fast_hello
= OSPF_FAST_HELLO_DEFAULT
;
691 SET_IF_PARAM(IF_DEF_PARAMS(ifp
), v_wait
);
692 IF_DEF_PARAMS(ifp
)->v_wait
= OSPF_ROUTER_DEAD_INTERVAL_DEFAULT
;
694 SET_IF_PARAM(IF_DEF_PARAMS(ifp
), auth_simple
);
695 memset(IF_DEF_PARAMS(ifp
)->auth_simple
, 0, OSPF_AUTH_SIMPLE_SIZE
);
697 SET_IF_PARAM(IF_DEF_PARAMS(ifp
), auth_type
);
698 IF_DEF_PARAMS(ifp
)->auth_type
= OSPF_AUTH_NOTSET
;
700 rc
= ospf_opaque_new_if(ifp
);
704 static int ospf_if_delete_hook(struct interface
*ifp
)
707 struct route_node
*rn
;
708 rc
= ospf_opaque_del_if(ifp
);
711 * This function must be called before `route_table_finish` due to
712 * BFD integration need to iterate over the interface neighbors to
713 * remove all registrations.
715 ospf_del_if_params(ifp
, IF_DEF_PARAMS(ifp
));
717 for (rn
= route_top(IF_OIFS_PARAMS(ifp
)); rn
; rn
= route_next(rn
))
719 ospf_del_if_params(ifp
, rn
->info
);
721 route_table_finish(IF_OIFS(ifp
));
722 route_table_finish(IF_OIFS_PARAMS(ifp
));
724 XFREE(MTYPE_OSPF_IF_INFO
, ifp
->info
);
729 int ospf_if_is_enable(struct ospf_interface
*oi
)
731 if (!(if_is_loopback(oi
->ifp
)))
732 if (if_is_up(oi
->ifp
))
738 void ospf_if_set_multicast(struct ospf_interface
*oi
)
740 if ((oi
->state
> ISM_Loopback
) && (oi
->type
!= OSPF_IFTYPE_LOOPBACK
)
741 && (oi
->type
!= OSPF_IFTYPE_VIRTUALLINK
)
742 && (OSPF_IF_PASSIVE_STATUS(oi
) == OSPF_IF_ACTIVE
)) {
743 /* The interface should belong to the OSPF-all-routers group. */
744 if (!OI_MEMBER_CHECK(oi
, MEMBER_ALLROUTERS
)
745 && (ospf_if_add_allspfrouters(oi
->ospf
, oi
->address
,
748 /* Set the flag only if the system call to join
750 OI_MEMBER_JOINED(oi
, MEMBER_ALLROUTERS
);
752 /* The interface should NOT belong to the OSPF-all-routers
754 if (OI_MEMBER_CHECK(oi
, MEMBER_ALLROUTERS
)) {
755 /* Only actually drop if this is the last reference */
756 if (OI_MEMBER_COUNT(oi
, MEMBER_ALLROUTERS
) == 1)
757 ospf_if_drop_allspfrouters(oi
->ospf
,
760 /* Unset the flag regardless of whether the system call
762 the group succeeded, since it's much safer to assume
764 we are not a member. */
765 OI_MEMBER_LEFT(oi
, MEMBER_ALLROUTERS
);
769 if (((oi
->type
== OSPF_IFTYPE_BROADCAST
)
770 || (oi
->type
== OSPF_IFTYPE_POINTOPOINT
))
771 && ((oi
->state
== ISM_DR
) || (oi
->state
== ISM_Backup
))
772 && (OSPF_IF_PASSIVE_STATUS(oi
) == OSPF_IF_ACTIVE
)) {
773 /* The interface should belong to the OSPF-designated-routers
775 if (!OI_MEMBER_CHECK(oi
, MEMBER_DROUTERS
)
776 && (ospf_if_add_alldrouters(oi
->ospf
, oi
->address
,
779 /* Set the flag only if the system call to join
781 OI_MEMBER_JOINED(oi
, MEMBER_DROUTERS
);
783 /* The interface should NOT belong to the
784 * OSPF-designated-routers group */
785 if (OI_MEMBER_CHECK(oi
, MEMBER_DROUTERS
)) {
786 /* drop only if last reference */
787 if (OI_MEMBER_COUNT(oi
, MEMBER_DROUTERS
) == 1)
788 ospf_if_drop_alldrouters(oi
->ospf
, oi
->address
,
791 /* Unset the flag regardless of whether the system call
793 the group succeeded, since it's much safer to assume
795 we are not a member. */
796 OI_MEMBER_LEFT(oi
, MEMBER_DROUTERS
);
801 int ospf_if_up(struct ospf_interface
*oi
)
806 if (oi
->type
== OSPF_IFTYPE_LOOPBACK
)
807 OSPF_ISM_EVENT_SCHEDULE(oi
, ISM_LoopInd
);
809 OSPF_ISM_EVENT_SCHEDULE(oi
, ISM_InterfaceUp
);
815 int ospf_if_down(struct ospf_interface
*oi
)
818 struct route_node
*rn
;
819 struct ospf_route
*or;
821 struct ospf_path
*op
;
828 /* Cease the HELPER role for all the neighbours
831 if (ospf
->is_helper_supported
) {
832 struct route_node
*rn
= NULL
;
834 if (ospf_interface_neighbor_count(oi
)) {
835 for (rn
= route_top(oi
->nbrs
); rn
;
836 rn
= route_next(rn
)) {
837 struct ospf_neighbor
*nbr
= NULL
;
844 if (OSPF_GR_IS_ACTIVE_HELPER(nbr
))
846 nbr
, OSPF_GR_HELPER_TOPO_CHG
);
851 OSPF_ISM_EVENT_EXECUTE(oi
, ISM_InterfaceDown
);
852 /* delete position in router LSA */
855 /* Shutdown packet reception and sending */
856 ospf_if_stream_unset(oi
);
858 if (!ospf
->new_table
)
860 for (rn
= route_top(ospf
->new_table
); rn
; rn
= route_next(rn
)) {
866 for (nh
= listhead(or->paths
); nh
;
867 nh
= listnextnode_unchecked(nh
)) {
868 op
= listgetdata(nh
);
869 if (op
->ifindex
== oi
->ifp
->ifindex
) {
880 /* Virtual Link related functions. */
882 struct ospf_vl_data
*ospf_vl_data_new(struct ospf_area
*area
,
883 struct in_addr vl_peer
)
885 struct ospf_vl_data
*vl_data
;
887 vl_data
= XCALLOC(MTYPE_OSPF_VL_DATA
, sizeof(struct ospf_vl_data
));
889 vl_data
->vl_peer
.s_addr
= vl_peer
.s_addr
;
890 vl_data
->vl_area_id
= area
->area_id
;
891 vl_data
->vl_area_id_fmt
= area
->area_id_fmt
;
896 void ospf_vl_data_free(struct ospf_vl_data
*vl_data
)
898 XFREE(MTYPE_OSPF_VL_DATA
, vl_data
);
901 unsigned int vlink_count
= 0;
903 struct ospf_interface
*ospf_vl_new(struct ospf
*ospf
,
904 struct ospf_vl_data
*vl_data
)
906 struct ospf_interface
*voi
;
907 struct interface
*vi
;
908 char ifname
[INTERFACE_NAMSIZ
];
909 struct ospf_area
*area
;
910 struct in_addr area_id
;
911 struct connected
*co
;
912 struct prefix_ipv4
*p
;
914 if (IS_DEBUG_OSPF_EVENT
)
915 zlog_debug("%s: (%s): Start", __func__
, ospf_get_name(ospf
));
916 if (vlink_count
== OSPF_VL_MAX_COUNT
) {
917 if (IS_DEBUG_OSPF_EVENT
)
919 "%s: Alarm: cannot create more than OSPF_MAX_VL_COUNT virtual links",
925 if (IS_DEBUG_OSPF_EVENT
)
926 zlog_debug("%s: creating pseudo zebra interface vrf id %u",
927 __func__
, ospf
->vrf_id
);
929 snprintf(ifname
, sizeof(ifname
), "VLINK%u", vlink_count
);
930 vi
= if_get_by_name(ifname
, ospf
->vrf_id
, ospf
->name
);
932 * if_get_by_name sets ZEBRA_INTERFACE_LINKDETECTION
933 * virtual links don't need this.
935 UNSET_FLAG(vi
->status
, ZEBRA_INTERFACE_LINKDETECTION
);
936 co
= connected_new();
938 listnode_add(vi
->connected
, co
);
940 p
= prefix_ipv4_new();
942 p
->prefix
.s_addr
= INADDR_ANY
;
945 co
->address
= (struct prefix
*)p
;
947 voi
= ospf_if_new(ospf
, vi
, co
->address
);
949 if (IS_DEBUG_OSPF_EVENT
)
951 "%s: Alarm: OSPF int structure is not created",
957 voi
->vl_data
= vl_data
;
958 voi
->ifp
->mtu
= OSPF_VL_MTU
;
959 voi
->type
= OSPF_IFTYPE_VIRTUALLINK
;
962 if (IS_DEBUG_OSPF_EVENT
)
963 zlog_debug("%s: Created name: %s set if->name to %s", __func__
,
966 area_id
.s_addr
= INADDR_ANY
;
967 area
= ospf_area_get(ospf
, area_id
);
970 if (IS_DEBUG_OSPF_EVENT
)
971 zlog_debug("%s: set associated area to the backbone", __func__
);
973 /* Add pseudo neighbor. */
974 ospf_nbr_self_reset(voi
, voi
->ospf
->router_id
);
976 ospf_area_add_if(voi
->area
, voi
);
978 if (IS_DEBUG_OSPF_EVENT
)
979 zlog_debug("%s: Stop", __func__
);
983 static void ospf_vl_if_delete(struct ospf_vl_data
*vl_data
)
985 struct interface
*ifp
= vl_data
->vl_oi
->ifp
;
986 struct vrf
*vrf
= ifp
->vrf
;
988 vl_data
->vl_oi
->address
->u
.prefix4
.s_addr
= INADDR_ANY
;
989 vl_data
->vl_oi
->address
->prefixlen
= 0;
990 ospf_if_free(vl_data
->vl_oi
);
992 if (!vrf_is_enabled(vrf
))
997 /* for a defined area, count the number of configured vl
999 int ospf_vl_count(struct ospf
*ospf
, struct ospf_area
*area
)
1002 struct ospf_vl_data
*vl_data
;
1003 struct listnode
*node
;
1005 for (ALL_LIST_ELEMENTS_RO(ospf
->vlinks
, node
, vl_data
)) {
1007 && !IPV4_ADDR_SAME(&vl_data
->vl_area_id
, &area
->area_id
))
1014 /* Look up vl_data for given peer, optionally qualified to be in the
1015 * specified area. NULL area returns first found..
1017 struct ospf_vl_data
*ospf_vl_lookup(struct ospf
*ospf
, struct ospf_area
*area
,
1018 struct in_addr vl_peer
)
1020 struct ospf_vl_data
*vl_data
;
1021 struct listnode
*node
;
1023 if (IS_DEBUG_OSPF_EVENT
) {
1024 zlog_debug("%s: Looking for %pI4", __func__
, &vl_peer
);
1026 zlog_debug("%s: in area %pI4", __func__
,
1030 for (ALL_LIST_ELEMENTS_RO(ospf
->vlinks
, node
, vl_data
)) {
1031 if (IS_DEBUG_OSPF_EVENT
)
1032 zlog_debug("%s: VL %s, peer %pI4", __func__
,
1033 vl_data
->vl_oi
->ifp
->name
,
1037 && !IPV4_ADDR_SAME(&vl_data
->vl_area_id
, &area
->area_id
))
1040 if (IPV4_ADDR_SAME(&vl_data
->vl_peer
, &vl_peer
))
1047 static void ospf_vl_shutdown(struct ospf_vl_data
*vl_data
)
1049 struct ospf_interface
*oi
;
1051 if ((oi
= vl_data
->vl_oi
) == NULL
)
1054 oi
->address
->u
.prefix4
.s_addr
= INADDR_ANY
;
1055 oi
->address
->prefixlen
= 0;
1057 UNSET_FLAG(oi
->ifp
->flags
, IFF_UP
);
1058 /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */
1059 OSPF_ISM_EVENT_EXECUTE(oi
, ISM_InterfaceDown
);
1062 void ospf_vl_add(struct ospf
*ospf
, struct ospf_vl_data
*vl_data
)
1064 listnode_add(ospf
->vlinks
, vl_data
);
1065 hook_call(ospf_vl_add
, vl_data
);
1068 void ospf_vl_delete(struct ospf
*ospf
, struct ospf_vl_data
*vl_data
)
1070 ospf_vl_shutdown(vl_data
);
1071 ospf_vl_if_delete(vl_data
);
1073 hook_call(ospf_vl_delete
, vl_data
);
1074 listnode_delete(ospf
->vlinks
, vl_data
);
1076 ospf_vl_data_free(vl_data
);
1079 static int ospf_vl_set_params(struct ospf_area
*area
,
1080 struct ospf_vl_data
*vl_data
, struct vertex
*v
)
1083 struct ospf_interface
*voi
;
1084 struct listnode
*node
;
1085 struct vertex_parent
*vp
= NULL
;
1087 struct router_lsa
*rl
;
1088 struct ospf_interface
*oi
;
1090 voi
= vl_data
->vl_oi
;
1092 if (voi
->output_cost
!= v
->distance
) {
1094 voi
->output_cost
= v
->distance
;
1098 for (ALL_LIST_ELEMENTS_RO(v
->parents
, node
, vp
)) {
1099 vl_data
->nexthop
.lsa_pos
= vp
->nexthop
->lsa_pos
;
1100 vl_data
->nexthop
.router
= vp
->nexthop
->router
;
1103 * Only deal with interface data when the local
1104 * (calculating) node is the SPF root node
1106 if (!area
->spf_dry_run
) {
1107 oi
= ospf_if_lookup_by_lsa_pos(
1108 area
, vl_data
->nexthop
.lsa_pos
);
1110 if (!IPV4_ADDR_SAME(&voi
->address
->u
.prefix4
,
1111 &oi
->address
->u
.prefix4
))
1114 voi
->address
->u
.prefix4
= oi
->address
->u
.prefix4
;
1115 voi
->address
->prefixlen
= oi
->address
->prefixlen
;
1118 break; /* We take the first interface. */
1121 rl
= (struct router_lsa
*)v
->lsa
;
1123 /* use SPF determined backlink index in struct vertex
1124 * for virtual link destination address
1126 if (vp
&& vp
->backlink
>= 0) {
1127 if (!IPV4_ADDR_SAME(&vl_data
->peer_addr
,
1128 &rl
->link
[vp
->backlink
].link_data
))
1130 vl_data
->peer_addr
= rl
->link
[vp
->backlink
].link_data
;
1132 /* This is highly odd, there is no backlink index
1133 * there should be due to the ospf_spf_has_link() check
1134 * in SPF. Lets warn and try pick a link anyway.
1136 zlog_info("ospf_vl_set_params: No backlink for %s!",
1137 vl_data
->vl_oi
->ifp
->name
);
1138 for (i
= 0; i
< ntohs(rl
->links
); i
++) {
1139 switch (rl
->link
[i
].type
) {
1140 case LSA_LINK_TYPE_VIRTUALLINK
:
1141 if (IS_DEBUG_OSPF_EVENT
)
1143 "found back link through VL");
1145 case LSA_LINK_TYPE_TRANSIT
:
1146 case LSA_LINK_TYPE_POINTOPOINT
:
1147 if (!IPV4_ADDR_SAME(&vl_data
->peer_addr
,
1148 &rl
->link
[i
].link_data
))
1150 vl_data
->peer_addr
= rl
->link
[i
].link_data
;
1155 if (IS_DEBUG_OSPF_EVENT
)
1156 zlog_debug("%s: %s peer address: %pI4, cost: %d,%schanged",
1157 __func__
, vl_data
->vl_oi
->ifp
->name
,
1158 &vl_data
->peer_addr
, voi
->output_cost
,
1159 (changed
? " " : " un"));
1165 void ospf_vl_up_check(struct ospf_area
*area
, struct in_addr rid
,
1168 struct ospf
*ospf
= area
->ospf
;
1169 struct listnode
*node
;
1170 struct ospf_vl_data
*vl_data
;
1171 struct ospf_interface
*oi
;
1173 if (IS_DEBUG_OSPF_EVENT
) {
1174 zlog_debug("%s: Start", __func__
);
1175 zlog_debug("%s: Router ID is %pI4 Area is %pI4", __func__
, &rid
,
1179 for (ALL_LIST_ELEMENTS_RO(ospf
->vlinks
, node
, vl_data
)) {
1180 if (IS_DEBUG_OSPF_EVENT
) {
1181 zlog_debug("%s: considering VL, %s in area %pI4",
1182 __func__
, vl_data
->vl_oi
->ifp
->name
,
1183 &vl_data
->vl_area_id
);
1184 zlog_debug("%s: peer ID: %pI4", __func__
,
1188 if (IPV4_ADDR_SAME(&vl_data
->vl_peer
, &rid
)
1189 && IPV4_ADDR_SAME(&vl_data
->vl_area_id
, &area
->area_id
)) {
1190 oi
= vl_data
->vl_oi
;
1191 SET_FLAG(vl_data
->flags
, OSPF_VL_FLAG_APPROVED
);
1193 if (IS_DEBUG_OSPF_EVENT
)
1194 zlog_debug("%s: this VL matched", __func__
);
1196 if (oi
->state
== ISM_Down
) {
1197 if (IS_DEBUG_OSPF_EVENT
)
1199 "%s: VL is down, waking it up",
1201 SET_FLAG(oi
->ifp
->flags
, IFF_UP
);
1202 OSPF_ISM_EVENT_EXECUTE(oi
, ISM_InterfaceUp
);
1205 if (ospf_vl_set_params(area
, vl_data
, v
)) {
1206 if (IS_DEBUG_OSPF(ism
, ISM_EVENTS
))
1208 "%s: VL cost change, scheduling router lsa refresh",
1211 ospf_router_lsa_update_area(
1213 else if (IS_DEBUG_OSPF(ism
, ISM_EVENTS
))
1215 "%s: VL cost change, no backbone!",
1222 void ospf_vl_unapprove(struct ospf
*ospf
)
1224 struct listnode
*node
;
1225 struct ospf_vl_data
*vl_data
;
1227 for (ALL_LIST_ELEMENTS_RO(ospf
->vlinks
, node
, vl_data
))
1228 UNSET_FLAG(vl_data
->flags
, OSPF_VL_FLAG_APPROVED
);
1231 void ospf_vl_shut_unapproved(struct ospf
*ospf
)
1233 struct listnode
*node
, *nnode
;
1234 struct ospf_vl_data
*vl_data
;
1236 for (ALL_LIST_ELEMENTS(ospf
->vlinks
, node
, nnode
, vl_data
))
1237 if (!CHECK_FLAG(vl_data
->flags
, OSPF_VL_FLAG_APPROVED
))
1238 ospf_vl_shutdown(vl_data
);
1241 int ospf_full_virtual_nbrs(struct ospf_area
*area
)
1243 if (IS_DEBUG_OSPF_EVENT
) {
1245 "counting fully adjacent virtual neighbors in area %pI4",
1247 zlog_debug("there are %d of them", area
->full_vls
);
1250 return area
->full_vls
;
1253 int ospf_vls_in_area(struct ospf_area
*area
)
1255 struct listnode
*node
;
1256 struct ospf_vl_data
*vl_data
;
1259 for (ALL_LIST_ELEMENTS_RO(area
->ospf
->vlinks
, node
, vl_data
))
1260 if (IPV4_ADDR_SAME(&vl_data
->vl_area_id
, &area
->area_id
))
1267 struct crypt_key
*ospf_crypt_key_new(void)
1269 return XCALLOC(MTYPE_OSPF_CRYPT_KEY
, sizeof(struct crypt_key
));
1272 void ospf_crypt_key_add(struct list
*crypt
, struct crypt_key
*ck
)
1274 listnode_add(crypt
, ck
);
1277 struct crypt_key
*ospf_crypt_key_lookup(struct list
*auth_crypt
, uint8_t key_id
)
1279 struct listnode
*node
;
1280 struct crypt_key
*ck
;
1282 for (ALL_LIST_ELEMENTS_RO(auth_crypt
, node
, ck
))
1283 if (ck
->key_id
== key_id
)
1289 int ospf_crypt_key_delete(struct list
*auth_crypt
, uint8_t key_id
)
1291 struct listnode
*node
, *nnode
;
1292 struct crypt_key
*ck
;
1294 for (ALL_LIST_ELEMENTS(auth_crypt
, node
, nnode
, ck
)) {
1295 if (ck
->key_id
== key_id
) {
1296 listnode_delete(auth_crypt
, ck
);
1297 XFREE(MTYPE_OSPF_CRYPT_KEY
, ck
);
1305 uint8_t ospf_default_iftype(struct interface
*ifp
)
1307 if (if_is_pointopoint(ifp
))
1308 return OSPF_IFTYPE_POINTOPOINT
;
1309 else if (if_is_loopback(ifp
))
1310 return OSPF_IFTYPE_LOOPBACK
;
1312 return OSPF_IFTYPE_BROADCAST
;
1315 void ospf_if_interface(struct interface
*ifp
)
1317 hook_call(ospf_if_update
, ifp
);
1320 uint32_t ospf_if_count_area_params(struct interface
*ifp
)
1322 struct ospf_if_params
*params
;
1323 struct route_node
*rn
;
1326 params
= IF_DEF_PARAMS(ifp
);
1327 if (OSPF_IF_PARAM_CONFIGURED(params
, if_area
))
1330 for (rn
= route_top(IF_OIFS_PARAMS(ifp
)); rn
; rn
= route_next(rn
))
1331 if ((params
= rn
->info
)
1332 && OSPF_IF_PARAM_CONFIGURED(params
, if_area
))
1338 static int ospf_ifp_create(struct interface
*ifp
)
1340 struct ospf
*ospf
= NULL
;
1341 struct ospf_if_info
*oii
;
1343 if (IS_DEBUG_OSPF(zebra
, ZEBRA_INTERFACE
))
1345 "Zebra: interface add %s vrf %s[%u] index %d flags %llx metric %d mtu %d speed %u",
1346 ifp
->name
, ifp
->vrf
->name
, ifp
->vrf
->vrf_id
,
1347 ifp
->ifindex
, (unsigned long long)ifp
->flags
,
1348 ifp
->metric
, ifp
->mtu
, ifp
->speed
);
1353 oii
->curr_mtu
= ifp
->mtu
;
1355 if (IF_DEF_PARAMS(ifp
)
1356 && !OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS(ifp
), type
)) {
1357 SET_IF_PARAM(IF_DEF_PARAMS(ifp
), type
);
1358 IF_DEF_PARAMS(ifp
)->type
= ospf_default_iftype(ifp
);
1361 ospf
= ifp
->vrf
->info
;
1365 if (ospf_if_count_area_params(ifp
) > 0)
1366 ospf_interface_area_set(ospf
, ifp
);
1368 ospf_if_recalculate_output_cost(ifp
);
1370 ospf_if_update(ospf
, ifp
);
1372 if (HAS_LINK_PARAMS(ifp
))
1373 ospf_mpls_te_update_if(ifp
);
1375 hook_call(ospf_if_update
, ifp
);
1380 static int ospf_ifp_up(struct interface
*ifp
)
1382 struct ospf_interface
*oi
;
1383 struct route_node
*rn
;
1384 struct ospf_if_info
*oii
= ifp
->info
;
1386 ospf_if_recalculate_output_cost(ifp
);
1388 if (oii
&& oii
->curr_mtu
!= ifp
->mtu
) {
1389 if (IS_DEBUG_OSPF(zebra
, ZEBRA_INTERFACE
))
1391 "Zebra: Interface[%s] MTU change %u -> %u.",
1392 ifp
->name
, oii
->curr_mtu
, ifp
->mtu
);
1394 oii
->curr_mtu
= ifp
->mtu
;
1395 /* Must reset the interface (simulate down/up) when MTU
1402 if (IS_DEBUG_OSPF(zebra
, ZEBRA_INTERFACE
))
1403 zlog_debug("Zebra: Interface[%s] state change to up.",
1406 for (rn
= route_top(IF_OIFS(ifp
)); rn
; rn
= route_next(rn
)) {
1407 if ((oi
= rn
->info
) == NULL
)
1413 if (HAS_LINK_PARAMS(ifp
))
1414 ospf_mpls_te_update_if(ifp
);
1419 static int ospf_ifp_down(struct interface
*ifp
)
1421 struct ospf_interface
*oi
;
1422 struct route_node
*node
;
1424 if (IS_DEBUG_OSPF(zebra
, ZEBRA_INTERFACE
))
1425 zlog_debug("Zebra: Interface[%s] state change to down.",
1428 for (node
= route_top(IF_OIFS(ifp
)); node
; node
= route_next(node
)) {
1429 if ((oi
= node
->info
) == NULL
)
1437 static int ospf_ifp_destroy(struct interface
*ifp
)
1440 struct route_node
*rn
;
1442 if (IS_DEBUG_OSPF(zebra
, ZEBRA_INTERFACE
))
1444 "Zebra: interface delete %s vrf %s[%u] index %d flags %llx metric %d mtu %d",
1445 ifp
->name
, ifp
->vrf
->name
, ifp
->vrf
->vrf_id
,
1446 ifp
->ifindex
, (unsigned long long)ifp
->flags
,
1447 ifp
->metric
, ifp
->mtu
);
1449 hook_call(ospf_if_delete
, ifp
);
1451 ospf
= ifp
->vrf
->info
;
1453 if (ospf_if_count_area_params(ifp
) > 0)
1454 ospf_interface_area_unset(ospf
, ifp
);
1457 for (rn
= route_top(IF_OIFS(ifp
)); rn
; rn
= route_next(rn
))
1459 ospf_if_free((struct ospf_interface
*)rn
->info
);
1464 /* Resetting ospf hello timer */
1465 void ospf_reset_hello_timer(struct interface
*ifp
, struct in_addr addr
,
1468 struct route_node
*rn
;
1472 struct ospf_interface
*oi
= NULL
;
1476 p
.prefixlen
= IPV4_MAX_BITLEN
;
1478 oi
= ospf_if_table_lookup(ifp
, &p
);
1481 /* Send hello before restart the hello timer
1482 * to avoid session flaps in case of bigger
1483 * hello interval configurations.
1485 ospf_hello_send(oi
);
1487 /* Restart hello timer for this interface */
1488 THREAD_OFF(oi
->t_hello
);
1489 OSPF_HELLO_TIMER_ON(oi
);
1495 for (rn
= route_top(IF_OIFS(ifp
)); rn
; rn
= route_next(rn
)) {
1496 struct ospf_interface
*oi
= rn
->info
;
1501 /* If hello interval configured on this oi, don't restart. */
1502 if (OSPF_IF_PARAM_CONFIGURED(oi
->params
, v_hello
))
1505 /* Send hello before restart the hello timer
1506 * to avoid session flaps in case of bigger
1507 * hello interval configurations.
1509 ospf_hello_send(oi
);
1511 /* Restart the hello timer. */
1512 THREAD_OFF(oi
->t_hello
);
1513 OSPF_HELLO_TIMER_ON(oi
);
1517 void ospf_if_init(void)
1519 if_zapi_callbacks(ospf_ifp_create
, ospf_ifp_up
,
1520 ospf_ifp_down
, ospf_ifp_destroy
);
1522 /* Initialize Zebra interface data structure. */
1523 hook_register_prio(if_add
, 0, ospf_if_new_hook
);
1524 hook_register_prio(if_del
, 0, ospf_if_delete_hook
);