1 /* OSPF version 2 daemon program.
2 * Copyright (C) 1999, 2000 Toshiaki Takada
4 * This file is part of GNU Zebra.
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
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.
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
33 #include "sockunion.h" /* for inet_aton () */
42 #include "ospfd/ospfd.h"
43 #include "ospfd/ospf_network.h"
44 #include "ospfd/ospf_interface.h"
45 #include "ospfd/ospf_ism.h"
46 #include "ospfd/ospf_asbr.h"
47 #include "ospfd/ospf_lsa.h"
48 #include "ospfd/ospf_lsdb.h"
49 #include "ospfd/ospf_neighbor.h"
50 #include "ospfd/ospf_nsm.h"
51 #include "ospfd/ospf_spf.h"
52 #include "ospfd/ospf_packet.h"
53 #include "ospfd/ospf_dump.h"
54 #include "ospfd/ospf_zebra.h"
55 #include "ospfd/ospf_abr.h"
56 #include "ospfd/ospf_flood.h"
57 #include "ospfd/ospf_route.h"
58 #include "ospfd/ospf_ase.h"
61 DEFINE_QOBJ_TYPE(ospf
)
63 /* OSPF process wide configuration. */
64 static struct ospf_master ospf_master
;
66 /* OSPF process wide configuration pointer to export. */
67 struct ospf_master
*om
;
69 extern struct zclient
*zclient
;
72 static void ospf_remove_vls_through_area(struct ospf
*, struct ospf_area
*);
73 static void ospf_network_free(struct ospf
*, struct ospf_network
*);
74 static void ospf_area_free(struct ospf_area
*);
75 static void ospf_network_run(struct prefix
*, struct ospf_area
*);
76 static void ospf_network_run_interface(struct ospf
*, struct interface
*,
77 struct prefix
*, struct ospf_area
*);
78 static void ospf_network_run_subnet(struct ospf
*, struct connected
*,
79 struct prefix
*, struct ospf_area
*);
80 static int ospf_network_match_iface(const struct connected
*,
81 const struct prefix
*);
82 static void ospf_finish_final(struct ospf
*);
84 #define OSPF_EXTERNAL_LSA_ORIGINATE_DELAY 1
86 void ospf_router_id_update(struct ospf
*ospf
)
88 struct vrf
*vrf
= vrf_lookup_by_id(ospf
->vrf_id
);
89 struct in_addr router_id
, router_id_old
;
90 struct ospf_interface
*oi
;
91 struct interface
*ifp
;
92 struct listnode
*node
;
95 if (!ospf
->oi_running
) {
96 if (IS_DEBUG_OSPF_EVENT
)
98 "Router ospf not configured -- Router-ID update postponed");
102 if (IS_DEBUG_OSPF_EVENT
)
103 zlog_debug("Router-ID[OLD:%s]: Update",
104 inet_ntoa(ospf
->router_id
));
106 router_id_old
= ospf
->router_id
;
108 /* Select the router ID based on these priorities:
109 1. Statically assigned router ID is always the first choice.
110 2. If there is no statically assigned router ID, then try to stick
111 with the most recent value, since changing router ID's is very
113 3. Last choice: just go with whatever the zebra daemon recommends.
115 if (ospf
->router_id_static
.s_addr
!= 0)
116 router_id
= ospf
->router_id_static
;
117 else if (ospf
->router_id
.s_addr
!= 0)
118 router_id
= ospf
->router_id
;
120 router_id
= ospf
->router_id_zebra
;
122 if (IS_DEBUG_OSPF_EVENT
)
123 zlog_debug("Router-ID[OLD:%s]: Update to %s",
124 inet_ntoa(ospf
->router_id
),
125 inet_ntoa(router_id
));
127 if (!IPV4_ADDR_SAME(&router_id_old
, &router_id
)) {
129 for (ALL_LIST_ELEMENTS_RO(ospf
->oiflist
, node
, oi
)) {
130 /* Some nbrs are identified by router_id, these needs
131 * to be rebuilt. Possible optimization would be to do
132 * oi->nbr_self->router_id = router_id for
133 * !(virtual | ptop) links
135 ospf_nbr_self_reset(oi
, router_id
);
138 /* If AS-external-LSA is queued, then flush those LSAs. */
139 if (router_id_old
.s_addr
== 0 && ospf
->external_origin
) {
140 /* Originate each redistributed external route. */
141 for (type
= 0; type
< ZEBRA_ROUTE_MAX
; type
++)
142 if (ospf
->external_origin
& (1 << type
))
145 ospf_external_lsa_originate_timer
,
147 /* Originate Deafult. */
148 if (ospf
->external_origin
& (1 << ZEBRA_ROUTE_MAX
))
149 thread_add_event(master
,
150 ospf_default_originate_timer
,
153 ospf
->external_origin
= 0;
156 /* Flush (inline) all external LSAs based on the OSPF_LSA_SELF
159 struct route_node
*rn
;
160 struct ospf_lsa
*lsa
;
162 LSDB_LOOP(EXTERNAL_LSDB(ospf
), rn
, lsa
)
163 if (IS_LSA_SELF(lsa
))
164 ospf_lsa_flush_schedule(ospf
, lsa
);
167 ospf
->router_id
= router_id
;
168 if (IS_DEBUG_OSPF_EVENT
)
169 zlog_debug("Router-ID[NEW:%s]: Update",
170 inet_ntoa(ospf
->router_id
));
172 /* Flush (inline) all external LSAs which now match the new
174 need to adjust the OSPF_LSA_SELF flag, so the flush doesnt
176 asserts in ospf_refresher_unregister_lsa(). This step is
178 because the current quagga code does look-up for
180 based on the self router-id alone but expects OSPF_LSA_SELF
184 struct route_node
*rn
;
185 struct ospf_lsa
*lsa
;
187 LSDB_LOOP (EXTERNAL_LSDB(ospf
), rn
, lsa
) {
188 /* AdvRouter and Router ID is the same. */
189 if (IPV4_ADDR_SAME(&lsa
->data
->adv_router
,
192 OSPF_LSA_SELF_CHECKED
);
193 SET_FLAG(lsa
->flags
, OSPF_LSA_SELF
);
194 ospf_lsa_flush_schedule(ospf
, lsa
);
199 /* Originate each redistributed external route. */
200 for (type
= 0; type
< ZEBRA_ROUTE_MAX
; type
++)
201 thread_add_event(master
,
202 ospf_external_lsa_originate_timer
,
204 thread_add_event(master
, ospf_default_originate_timer
, ospf
, 0,
207 /* update router-lsa's for each area */
208 ospf_router_lsa_update(ospf
);
210 /* update ospf_interface's */
211 FOR_ALL_INTERFACES (vrf
, ifp
)
212 ospf_if_update(ospf
, ifp
);
216 /* For OSPF area sort by area id. */
217 static int ospf_area_id_cmp(struct ospf_area
*a1
, struct ospf_area
*a2
)
219 if (ntohl(a1
->area_id
.s_addr
) > ntohl(a2
->area_id
.s_addr
))
221 if (ntohl(a1
->area_id
.s_addr
) < ntohl(a2
->area_id
.s_addr
))
226 /* Allocate new ospf structure. */
227 static struct ospf
*ospf_new(u_short instance
, const char *name
)
230 struct vrf
*vrf
= NULL
;
232 struct ospf
*new = XCALLOC(MTYPE_OSPF_TOP
, sizeof(struct ospf
));
234 new->instance
= instance
;
235 new->router_id
.s_addr
= htonl(0);
236 new->router_id_static
.s_addr
= htonl(0);
239 new->vrf_id
= VRF_UNKNOWN
;
240 /* Freed in ospf_finish_final */
241 new->name
= XSTRDUP(MTYPE_OSPF_TOP
, name
);
242 vrf
= vrf_lookup_by_name(new->name
);
243 if (IS_DEBUG_OSPF_EVENT
)
244 zlog_debug("%s: Create new ospf instance with vrf_name %s vrf_id %u",
245 __PRETTY_FUNCTION__
, name
, new->vrf_id
);
247 ospf_vrf_link(new, vrf
);
249 new->vrf_id
= VRF_DEFAULT
;
250 vrf
= vrf_lookup_by_id(VRF_DEFAULT
);
251 ospf_vrf_link(new, vrf
);
253 ospf_zebra_vrf_register(new);
255 new->abr_type
= OSPF_ABR_DEFAULT
;
256 new->oiflist
= list_new();
257 new->vlinks
= list_new();
258 new->areas
= list_new();
259 new->areas
->cmp
= (int (*)(void *, void *))ospf_area_id_cmp
;
260 new->networks
= route_table_init();
261 new->nbr_nbma
= route_table_init();
263 new->lsdb
= ospf_lsdb_new();
265 new->default_originate
= DEFAULT_ORIGINATE_NONE
;
267 new->passive_interface_default
= OSPF_IF_ACTIVE
;
269 new->new_external_route
= route_table_init();
270 new->old_external_route
= route_table_init();
271 new->external_lsas
= route_table_init();
273 new->stub_router_startup_time
= OSPF_STUB_ROUTER_UNCONFIGURED
;
274 new->stub_router_shutdown_time
= OSPF_STUB_ROUTER_UNCONFIGURED
;
275 new->stub_router_admin_set
= OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET
;
277 /* Distribute parameter init. */
278 for (i
= 0; i
<= ZEBRA_ROUTE_MAX
; i
++) {
281 new->default_metric
= -1;
282 new->ref_bandwidth
= OSPF_DEFAULT_REF_BANDWIDTH
;
285 new->min_ls_interval
= OSPF_MIN_LS_INTERVAL
;
286 new->min_ls_arrival
= OSPF_MIN_LS_ARRIVAL
;
288 /* SPF timer value init. */
289 new->spf_delay
= OSPF_SPF_DELAY_DEFAULT
;
290 new->spf_holdtime
= OSPF_SPF_HOLDTIME_DEFAULT
;
291 new->spf_max_holdtime
= OSPF_SPF_MAX_HOLDTIME_DEFAULT
;
292 new->spf_hold_multiplier
= 1;
295 new->maxage_delay
= OSPF_LSA_MAXAGE_REMOVE_DELAY_DEFAULT
;
296 new->maxage_lsa
= route_table_init();
297 new->t_maxage_walker
= NULL
;
298 thread_add_timer(master
, ospf_lsa_maxage_walker
, new,
299 OSPF_LSA_MAXAGE_CHECK_INTERVAL
, &new->t_maxage_walker
);
301 /* Distance table init. */
302 new->distance_table
= route_table_init();
304 new->lsa_refresh_queue
.index
= 0;
305 new->lsa_refresh_interval
= OSPF_LSA_REFRESH_INTERVAL_DEFAULT
;
306 new->t_lsa_refresher
= NULL
;
307 thread_add_timer(master
, ospf_lsa_refresh_walker
, new,
308 new->lsa_refresh_interval
, &new->t_lsa_refresher
);
309 new->lsa_refresher_started
= monotime(NULL
);
311 if ((new->ibuf
= stream_new(OSPF_MAX_PACKET_SIZE
+ 1)) == NULL
) {
313 "ospf_new: fatal error: stream_new(%u) failed allocating ibuf",
314 OSPF_MAX_PACKET_SIZE
+ 1);
318 new->oi_write_q
= list_new();
319 new->write_oi_count
= OSPF_WRITE_INTERFACE_COUNT_DEFAULT
;
321 /* Enable "log-adjacency-changes" */
322 #if DFLT_OSPF_LOG_ADJACENCY_CHANGES
323 SET_FLAG(new->config
, OSPF_LOG_ADJACENCY_CHANGES
);
329 if ((ospf_sock_init(new)) < 0) {
330 if (new->vrf_id
!= VRF_UNKNOWN
)
332 "%s: ospf_sock_init is unable to open a socket",
336 thread_add_read(master
, ospf_read
, new, new->fd
, &new->t_read
);
341 struct ospf
*ospf_lookup_instance(u_short instance
)
344 struct listnode
*node
, *nnode
;
346 if (listcount(om
->ospf
) == 0)
349 for (ALL_LIST_ELEMENTS(om
->ospf
, node
, nnode
, ospf
))
350 if ((ospf
->instance
== 0 && instance
== 0)
351 || (ospf
->instance
&& instance
352 && ospf
->instance
== instance
))
358 static int ospf_is_ready(struct ospf
*ospf
)
360 /* OSPF must be on and Router-ID must be configured. */
361 if (!ospf
|| ospf
->router_id
.s_addr
== 0)
367 static void ospf_add(struct ospf
*ospf
)
369 listnode_add(om
->ospf
, ospf
);
372 static void ospf_delete(struct ospf
*ospf
)
374 listnode_delete(om
->ospf
, ospf
);
377 struct ospf
*ospf_lookup_by_inst_name(u_short instance
, const char *name
)
379 struct ospf
*ospf
= NULL
;
380 struct listnode
*node
, *nnode
;
382 for (ALL_LIST_ELEMENTS(om
->ospf
, node
, nnode
, ospf
)) {
383 if ((ospf
->instance
== instance
) &&
384 ((ospf
->name
== NULL
&& name
== NULL
) ||
385 (ospf
->name
&& name
&& strcmp(ospf
->name
, name
) == 0)))
391 struct ospf
*ospf_get(u_short instance
, const char *name
)
395 /* vrf name provided call inst and name based api
396 * in case of no name pass default ospf instance */
398 ospf
= ospf_lookup_by_inst_name(instance
, name
);
400 ospf
= ospf_lookup_by_vrf_id(VRF_DEFAULT
);
403 ospf
= ospf_new(instance
, name
);
406 if (ospf
->router_id_static
.s_addr
== 0)
407 ospf_router_id_update(ospf
);
409 ospf_opaque_type11_lsa_init(ospf
);
415 struct ospf
*ospf_get_instance(u_short instance
)
419 ospf
= ospf_lookup_instance(instance
);
421 ospf
= ospf_new(instance
, NULL
/* VRF_DEFAULT*/);
424 if (ospf
->router_id_static
.s_addr
== 0) {
425 if (vrf_lookup_by_id(ospf
->vrf_id
))
426 ospf_router_id_update(ospf
);
428 if (IS_DEBUG_OSPF_EVENT
)
429 zlog_debug("%s: ospf VRF (id %d) is not active yet, skip router id update"
430 , __PRETTY_FUNCTION__
,
433 ospf_router_id_update(ospf
);
436 ospf_opaque_type11_lsa_init(ospf
);
442 struct ospf
*ospf_lookup_by_vrf_id(vrf_id_t vrf_id
)
444 struct vrf
*vrf
= NULL
;
446 vrf
= vrf_lookup_by_id(vrf_id
);
449 return (vrf
->info
) ? (struct ospf
*)vrf
->info
: NULL
;
453 /* It should only be used when processing incoming info update from zebra.
454 * Other situations, it is not sufficient to lookup the ospf instance by
455 * vrf_name only without using the instance number.
457 static struct ospf
*ospf_lookup_by_name(const char *vrf_name
)
459 struct ospf
*ospf
= NULL
;
460 struct listnode
*node
, *nnode
;
462 for (ALL_LIST_ELEMENTS(om
->ospf
, node
, nnode
, ospf
))
463 if ((ospf
->name
== NULL
&& vrf_name
== NULL
)
464 || (ospf
->name
&& vrf_name
&&
465 strcmp(ospf
->name
, vrf_name
) == 0))
470 /* Handle the second half of deferred shutdown. This is called either
471 * from the deferred-shutdown timer thread, or directly through
472 * ospf_deferred_shutdown_check.
474 * Function is to cleanup G-R state, if required then call ospf_finish_final
475 * to complete shutdown of this ospf instance. Possibly exit if the
476 * whole process is being shutdown and this was the last OSPF instance.
478 static void ospf_deferred_shutdown_finish(struct ospf
*ospf
)
480 ospf
->stub_router_shutdown_time
= OSPF_STUB_ROUTER_UNCONFIGURED
;
481 OSPF_TIMER_OFF(ospf
->t_deferred_shutdown
);
483 ospf_finish_final(ospf
);
485 /* *ospf is now invalid */
487 /* ospfd being shut-down? If so, was this the last ospf instance? */
488 if (CHECK_FLAG(om
->options
, OSPF_MASTER_SHUTDOWN
)
489 && (listcount(om
->ospf
) == 0)) {
496 /* Timer thread for G-R */
497 static int ospf_deferred_shutdown_timer(struct thread
*t
)
499 struct ospf
*ospf
= THREAD_ARG(t
);
501 ospf_deferred_shutdown_finish(ospf
);
506 /* Check whether deferred-shutdown must be scheduled, otherwise call
507 * down directly into second-half of instance shutdown.
509 static void ospf_deferred_shutdown_check(struct ospf
*ospf
)
511 unsigned long timeout
;
513 struct ospf_area
*area
;
515 /* deferred shutdown already running? */
516 if (ospf
->t_deferred_shutdown
)
519 /* Should we try push out max-metric LSAs? */
520 if (ospf
->stub_router_shutdown_time
!= OSPF_STUB_ROUTER_UNCONFIGURED
) {
521 for (ALL_LIST_ELEMENTS_RO(ospf
->areas
, ln
, area
)) {
522 SET_FLAG(area
->stub_router_state
,
523 OSPF_AREA_ADMIN_STUB_ROUTED
);
525 if (!CHECK_FLAG(area
->stub_router_state
,
526 OSPF_AREA_IS_STUB_ROUTED
))
527 ospf_router_lsa_update_area(area
);
529 timeout
= ospf
->stub_router_shutdown_time
;
531 /* No timer needed */
532 ospf_deferred_shutdown_finish(ospf
);
536 OSPF_TIMER_ON(ospf
->t_deferred_shutdown
, ospf_deferred_shutdown_timer
,
541 /* Shut down the entire process */
542 void ospf_terminate(void)
545 struct listnode
*node
, *nnode
;
547 /* shutdown already in progress */
548 if (CHECK_FLAG(om
->options
, OSPF_MASTER_SHUTDOWN
))
551 SET_FLAG(om
->options
, OSPF_MASTER_SHUTDOWN
);
553 /* exit immediately if OSPF not actually running */
554 if (listcount(om
->ospf
) == 0)
558 for (ALL_LIST_ELEMENTS(om
->ospf
, node
, nnode
, ospf
))
561 /* Cleanup route maps */
562 route_map_add_hook(NULL
);
563 route_map_delete_hook(NULL
);
564 route_map_event_hook(NULL
);
567 /* reverse prefix_list_init */
568 prefix_list_add_hook(NULL
);
569 prefix_list_delete_hook(NULL
);
572 /* Cleanup vrf info */
573 ospf_vrf_terminate();
575 /* Deliberately go back up, hopefully to thread scheduler, as
576 * One or more ospf_finish()'s may have deferred shutdown to a timer
579 zclient_stop(zclient
);
580 zclient_free(zclient
);
585 void ospf_finish(struct ospf
*ospf
)
587 /* let deferred shutdown decide */
588 ospf_deferred_shutdown_check(ospf
);
590 /* if ospf_deferred_shutdown returns, then ospf_finish_final is
591 * deferred to expiry of G-S timer thread. Return back up, hopefully
592 * to thread scheduler.
597 /* Final cleanup of ospf instance */
598 static void ospf_finish_final(struct ospf
*ospf
)
600 struct vrf
*vrf
= vrf_lookup_by_id(ospf
->vrf_id
);
601 struct route_node
*rn
;
602 struct ospf_nbr_nbma
*nbr_nbma
;
603 struct ospf_lsa
*lsa
;
604 struct interface
*ifp
;
605 struct ospf_interface
*oi
;
606 struct ospf_area
*area
;
607 struct ospf_vl_data
*vl_data
;
608 struct listnode
*node
, *nnode
;
610 u_short instance
= 0;
614 ospf_opaque_type11_lsa_term(ospf
);
616 ospf_opaque_finish();
618 ospf_flush_self_originated_lsas_now(ospf
);
620 /* Unregister redistribution */
621 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
622 struct list
*red_list
;
623 struct ospf_redist
*red
;
625 red_list
= ospf
->redist
[i
];
629 for (ALL_LIST_ELEMENTS(red_list
, node
, nnode
, red
))
630 ospf_redistribute_unset(ospf
, i
, red
->instance
);
632 ospf_redistribute_default_unset(ospf
);
634 for (ALL_LIST_ELEMENTS(ospf
->areas
, node
, nnode
, area
))
635 ospf_remove_vls_through_area(ospf
, area
);
637 for (ALL_LIST_ELEMENTS(ospf
->vlinks
, node
, nnode
, vl_data
))
638 ospf_vl_delete(ospf
, vl_data
);
640 list_delete_and_null(&ospf
->vlinks
);
642 /* Remove any ospf interface config params */
643 FOR_ALL_INTERFACES (vrf
, ifp
) {
644 struct ospf_if_params
*params
;
646 params
= IF_DEF_PARAMS(ifp
);
647 if (OSPF_IF_PARAM_CONFIGURED(params
, if_area
))
648 UNSET_IF_PARAM(params
, if_area
);
651 /* Reset interface. */
652 for (ALL_LIST_ELEMENTS(ospf
->oiflist
, node
, nnode
, oi
))
654 list_delete_and_null(&ospf
->oiflist
);
656 /* De-Register VRF */
657 ospf_zebra_vrf_deregister(ospf
);
659 /* Clear static neighbors */
660 for (rn
= route_top(ospf
->nbr_nbma
); rn
; rn
= route_next(rn
))
661 if ((nbr_nbma
= rn
->info
)) {
662 OSPF_POLL_TIMER_OFF(nbr_nbma
->t_poll
);
665 nbr_nbma
->nbr
->nbr_nbma
= NULL
;
666 nbr_nbma
->nbr
= NULL
;
670 listnode_delete(nbr_nbma
->oi
->nbr_nbma
,
675 XFREE(MTYPE_OSPF_NEIGHBOR_STATIC
, nbr_nbma
);
678 route_table_finish(ospf
->nbr_nbma
);
680 /* Clear networks and Areas. */
681 for (rn
= route_top(ospf
->networks
); rn
; rn
= route_next(rn
)) {
682 struct ospf_network
*network
;
684 if ((network
= rn
->info
) != NULL
) {
685 ospf_network_free(ospf
, network
);
687 route_unlock_node(rn
);
690 route_table_finish(ospf
->networks
);
692 for (ALL_LIST_ELEMENTS(ospf
->areas
, node
, nnode
, area
)) {
693 listnode_delete(ospf
->areas
, area
);
694 ospf_area_free(area
);
697 /* Cancel all timers. */
698 OSPF_TIMER_OFF(ospf
->t_external_lsa
);
699 OSPF_TIMER_OFF(ospf
->t_spf_calc
);
700 OSPF_TIMER_OFF(ospf
->t_ase_calc
);
701 OSPF_TIMER_OFF(ospf
->t_maxage
);
702 OSPF_TIMER_OFF(ospf
->t_maxage_walker
);
703 OSPF_TIMER_OFF(ospf
->t_abr_task
);
704 OSPF_TIMER_OFF(ospf
->t_asbr_check
);
705 OSPF_TIMER_OFF(ospf
->t_distribute_update
);
706 OSPF_TIMER_OFF(ospf
->t_lsa_refresher
);
707 OSPF_TIMER_OFF(ospf
->t_read
);
708 OSPF_TIMER_OFF(ospf
->t_write
);
709 OSPF_TIMER_OFF(ospf
->t_opaque_lsa_self
);
712 stream_free(ospf
->ibuf
);
714 LSDB_LOOP(OPAQUE_AS_LSDB(ospf
), rn
, lsa
)
715 ospf_discard_from_db(ospf
, ospf
->lsdb
, lsa
);
716 LSDB_LOOP(EXTERNAL_LSDB(ospf
), rn
, lsa
)
717 ospf_discard_from_db(ospf
, ospf
->lsdb
, lsa
);
719 ospf_lsdb_delete_all(ospf
->lsdb
);
720 ospf_lsdb_free(ospf
->lsdb
);
722 for (rn
= route_top(ospf
->maxage_lsa
); rn
; rn
= route_next(rn
)) {
723 struct ospf_lsa
*lsa
;
725 if ((lsa
= rn
->info
) != NULL
) {
726 ospf_lsa_unlock(&lsa
);
729 route_unlock_node(rn
);
731 route_table_finish(ospf
->maxage_lsa
);
734 ospf_route_table_free(ospf
->old_table
);
735 if (ospf
->new_table
) {
736 ospf_route_delete(ospf
, ospf
->new_table
);
737 ospf_route_table_free(ospf
->new_table
);
740 ospf_rtrs_free(ospf
->old_rtrs
);
742 ospf_rtrs_free(ospf
->new_rtrs
);
743 if (ospf
->new_external_route
) {
744 ospf_route_delete(ospf
, ospf
->new_external_route
);
745 ospf_route_table_free(ospf
->new_external_route
);
747 if (ospf
->old_external_route
) {
748 ospf_route_delete(ospf
, ospf
->old_external_route
);
749 ospf_route_table_free(ospf
->old_external_route
);
751 if (ospf
->external_lsas
) {
752 ospf_ase_external_lsas_finish(ospf
->external_lsas
);
755 list_delete_and_null(&ospf
->areas
);
756 list_delete_and_null(&ospf
->oi_write_q
);
758 for (i
= ZEBRA_ROUTE_SYSTEM
; i
<= ZEBRA_ROUTE_MAX
; i
++) {
759 struct list
*ext_list
;
760 struct listnode
*node
;
761 struct ospf_external
*ext
;
763 ext_list
= ospf
->external
[i
];
767 for (ALL_LIST_ELEMENTS_RO(ext_list
, node
, ext
)) {
768 if (ext
->external_info
)
769 for (rn
= route_top(ext
->external_info
); rn
;
770 rn
= route_next(rn
)) {
771 if (rn
->info
== NULL
)
774 XFREE(MTYPE_OSPF_EXTERNAL_INFO
,
777 route_unlock_node(rn
);
782 ospf_distance_reset(ospf
);
783 route_table_finish(ospf
->distance_table
);
785 if (!CHECK_FLAG(om
->options
, OSPF_MASTER_SHUTDOWN
))
786 instance
= ospf
->instance
;
791 vrf
= vrf_lookup_by_name(ospf
->name
);
793 ospf_vrf_unlink(ospf
, vrf
);
794 XFREE(MTYPE_OSPF_TOP
, ospf
->name
);
796 vrf
= vrf_lookup_by_id(VRF_DEFAULT
);
798 ospf_vrf_unlink(ospf
, vrf
);
801 XFREE(MTYPE_OSPF_TOP
, ospf
);
803 if (!CHECK_FLAG(om
->options
, OSPF_MASTER_SHUTDOWN
))
804 ospf_get_instance(instance
);
808 /* allocate new OSPF Area object */
809 static struct ospf_area
*ospf_area_new(struct ospf
*ospf
,
810 struct in_addr area_id
)
812 struct ospf_area
*new;
814 /* Allocate new config_network. */
815 new = XCALLOC(MTYPE_OSPF_AREA
, sizeof(struct ospf_area
));
819 new->area_id
= area_id
;
820 new->area_id_fmt
= OSPF_AREA_ID_FMT_DOTTEDQUAD
;
822 new->external_routing
= OSPF_AREA_DEFAULT
;
823 new->default_cost
= 1;
824 new->auth_type
= OSPF_AUTH_NULL
;
827 new->lsdb
= ospf_lsdb_new();
829 /* Self-originated LSAs initialize. */
830 new->router_lsa_self
= NULL
;
832 ospf_opaque_type10_lsa_init(new);
834 new->oiflist
= list_new();
835 new->ranges
= route_table_init();
837 if (area_id
.s_addr
== OSPF_AREA_BACKBONE
)
838 ospf
->backbone
= new;
843 static void ospf_area_free(struct ospf_area
*area
)
845 struct route_node
*rn
;
846 struct ospf_lsa
*lsa
;
848 ospf_opaque_type10_lsa_term(area
);
851 LSDB_LOOP(ROUTER_LSDB(area
), rn
, lsa
)
852 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
853 LSDB_LOOP(NETWORK_LSDB(area
), rn
, lsa
)
854 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
855 LSDB_LOOP(SUMMARY_LSDB(area
), rn
, lsa
)
856 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
857 LSDB_LOOP(ASBR_SUMMARY_LSDB(area
), rn
, lsa
)
858 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
860 LSDB_LOOP(NSSA_LSDB(area
), rn
, lsa
)
861 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
862 LSDB_LOOP(OPAQUE_AREA_LSDB(area
), rn
, lsa
)
863 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
864 LSDB_LOOP(OPAQUE_LINK_LSDB(area
), rn
, lsa
)
865 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
867 ospf_lsdb_delete_all(area
->lsdb
);
868 ospf_lsdb_free(area
->lsdb
);
870 ospf_lsa_unlock(&area
->router_lsa_self
);
872 route_table_finish(area
->ranges
);
873 list_delete_and_null(&area
->oiflist
);
875 if (EXPORT_NAME(area
))
876 free(EXPORT_NAME(area
));
878 if (IMPORT_NAME(area
))
879 free(IMPORT_NAME(area
));
882 OSPF_TIMER_OFF(area
->t_stub_router
);
883 OSPF_TIMER_OFF(area
->t_opaque_lsa_self
);
885 if (OSPF_IS_AREA_BACKBONE(area
))
886 area
->ospf
->backbone
= NULL
;
888 XFREE(MTYPE_OSPF_AREA
, area
);
891 void ospf_area_check_free(struct ospf
*ospf
, struct in_addr area_id
)
893 struct ospf_area
*area
;
895 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
896 if (area
&& listcount(area
->oiflist
) == 0 && area
->ranges
->top
== NULL
897 && area
->shortcut_configured
== OSPF_SHORTCUT_DEFAULT
898 && area
->external_routing
== OSPF_AREA_DEFAULT
899 && area
->no_summary
== 0 && area
->default_cost
== 1
900 && EXPORT_NAME(area
) == NULL
&& IMPORT_NAME(area
) == NULL
901 && area
->auth_type
== OSPF_AUTH_NULL
) {
902 listnode_delete(ospf
->areas
, area
);
903 ospf_area_free(area
);
907 struct ospf_area
*ospf_area_get(struct ospf
*ospf
, struct in_addr area_id
)
909 struct ospf_area
*area
;
911 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
913 area
= ospf_area_new(ospf
, area_id
);
914 listnode_add_sort(ospf
->areas
, area
);
915 ospf_check_abr_status(ospf
);
916 if (ospf
->stub_router_admin_set
917 == OSPF_STUB_ROUTER_ADMINISTRATIVE_SET
) {
918 SET_FLAG(area
->stub_router_state
,
919 OSPF_AREA_ADMIN_STUB_ROUTED
);
926 struct ospf_area
*ospf_area_lookup_by_area_id(struct ospf
*ospf
,
927 struct in_addr area_id
)
929 struct ospf_area
*area
;
930 struct listnode
*node
;
932 for (ALL_LIST_ELEMENTS_RO(ospf
->areas
, node
, area
))
933 if (IPV4_ADDR_SAME(&area
->area_id
, &area_id
))
939 void ospf_area_add_if(struct ospf_area
*area
, struct ospf_interface
*oi
)
941 listnode_add(area
->oiflist
, oi
);
944 void ospf_area_del_if(struct ospf_area
*area
, struct ospf_interface
*oi
)
946 listnode_delete(area
->oiflist
, oi
);
950 static void add_ospf_interface(struct connected
*co
, struct ospf_area
*area
)
952 struct ospf_interface
*oi
;
954 oi
= ospf_if_new(area
->ospf
, co
->ifp
, co
->address
);
959 oi
->params
= ospf_lookup_if_params(co
->ifp
, oi
->address
->u
.prefix4
);
960 oi
->output_cost
= ospf_if_get_output_cost(oi
);
962 /* Relate ospf interface to ospf instance. */
963 oi
->ospf
= area
->ospf
;
965 /* update network type as interface flag */
966 /* If network type is specified previously,
967 skip network type setting. */
968 oi
->type
= IF_DEF_PARAMS(co
->ifp
)->type
;
970 /* Add pseudo neighbor. */
971 ospf_nbr_self_reset(oi
, oi
->ospf
->router_id
);
973 ospf_area_add_if(oi
->area
, oi
);
976 * if router_id is not configured, dont bring up
978 * ospf_router_id_update() will call ospf_if_update
979 * whenever r-id is configured instead.
981 if ((area
->ospf
->router_id
.s_addr
!= 0) && if_is_operative(co
->ifp
))
985 static void update_redistributed(struct ospf
*ospf
, int add_to_ospf
)
987 struct route_node
*rn
;
988 struct external_info
*ei
;
989 struct ospf_external
*ext
;
991 if (ospf_is_type_redistributed(ospf
, ZEBRA_ROUTE_CONNECT
, 0)) {
992 ext
= ospf_external_lookup(ospf
, ZEBRA_ROUTE_CONNECT
, 0);
993 if ((ext
) && EXTERNAL_INFO(ext
)) {
994 for (rn
= route_top(EXTERNAL_INFO(ext
)); rn
;
995 rn
= route_next(rn
)) {
1001 if (ospf_external_info_find_lsa(
1003 if (!ospf_distribute_check_connected(
1005 ospf_external_lsa_flush(
1009 ei
->ifindex
/*, ei->nexthop */);
1011 if (!ospf_external_info_find_lsa(
1013 if (ospf_distribute_check_connected(
1015 ospf_external_lsa_originate(
1024 /* Config network statement related functions. */
1025 static struct ospf_network
*ospf_network_new(struct in_addr area_id
)
1027 struct ospf_network
*new;
1028 new = XCALLOC(MTYPE_OSPF_NETWORK
, sizeof(struct ospf_network
));
1030 new->area_id
= area_id
;
1031 new->area_id_fmt
= OSPF_AREA_ID_FMT_DOTTEDQUAD
;
1036 static void ospf_network_free(struct ospf
*ospf
, struct ospf_network
*network
)
1038 ospf_area_check_free(ospf
, network
->area_id
);
1039 ospf_schedule_abr_task(ospf
);
1040 XFREE(MTYPE_OSPF_NETWORK
, network
);
1043 int ospf_network_set(struct ospf
*ospf
, struct prefix_ipv4
*p
,
1044 struct in_addr area_id
, int df
)
1046 struct ospf_network
*network
;
1047 struct ospf_area
*area
;
1048 struct route_node
*rn
;
1050 rn
= route_node_get(ospf
->networks
, (struct prefix
*)p
);
1053 route_unlock_node(rn
);
1055 if (IPV4_ADDR_SAME(&area_id
, &network
->area_id
)) {
1058 /* There is already same network statement. */
1063 rn
->info
= network
= ospf_network_new(area_id
);
1064 network
->area_id_fmt
= df
;
1065 area
= ospf_area_get(ospf
, area_id
);
1066 ospf_area_display_format_set(ospf
, area
, df
);
1068 /* Run network config now. */
1069 ospf_network_run((struct prefix
*)p
, area
);
1071 /* Update connected redistribute. */
1072 update_redistributed(ospf
, 1); /* interfaces possibly added */
1074 ospf_area_check_free(ospf
, area_id
);
1079 int ospf_network_unset(struct ospf
*ospf
, struct prefix_ipv4
*p
,
1080 struct in_addr area_id
)
1082 struct route_node
*rn
;
1083 struct ospf_network
*network
;
1084 struct listnode
*node
, *nnode
;
1085 struct ospf_interface
*oi
;
1087 rn
= route_node_lookup(ospf
->networks
, (struct prefix
*)p
);
1092 route_unlock_node(rn
);
1093 if (!IPV4_ADDR_SAME(&area_id
, &network
->area_id
))
1096 ospf_network_free(ospf
, rn
->info
);
1098 route_unlock_node(rn
); /* initial reference */
1100 /* Find interfaces that are not configured already. */
1101 for (ALL_LIST_ELEMENTS(ospf
->oiflist
, node
, nnode
, oi
)) {
1103 if (oi
->type
== OSPF_IFTYPE_VIRTUALLINK
)
1106 ospf_network_run_subnet(ospf
, oi
->connected
, NULL
, NULL
);
1109 /* Update connected redistribute. */
1110 update_redistributed(ospf
, 0); /* interfaces possibly removed */
1111 ospf_area_check_free(ospf
, area_id
);
1116 /* Ensure there's an OSPF instance, as "ip ospf area" enabled OSPF means
1117 * there might not be any 'router ospf' config.
1119 * Otherwise, doesn't do anything different to ospf_if_update for now
1121 void ospf_interface_area_set(struct ospf
*ospf
, struct interface
*ifp
)
1126 ospf_if_update(ospf
, ifp
);
1127 /* if_update does a update_redistributed */
1132 void ospf_interface_area_unset(struct ospf
*ospf
, struct interface
*ifp
)
1134 struct route_node
*rn_oi
;
1137 return; /* Ospf not ready yet */
1139 /* Find interfaces that may need to be removed. */
1140 for (rn_oi
= route_top(IF_OIFS(ifp
)); rn_oi
;
1141 rn_oi
= route_next(rn_oi
)) {
1142 struct ospf_interface
*oi
= NULL
;
1144 if ((oi
= rn_oi
->info
) == NULL
)
1147 if (oi
->type
== OSPF_IFTYPE_VIRTUALLINK
)
1150 ospf_network_run_subnet(ospf
, oi
->connected
, NULL
, NULL
);
1153 /* Update connected redistribute. */
1154 update_redistributed(ospf
, 0); /* interfaces possibly removed */
1157 /* Check whether interface matches given network
1158 * returns: 1, true. 0, false
1160 static int ospf_network_match_iface(const struct connected
*co
,
1161 const struct prefix
*net
)
1163 /* new approach: more elegant and conceptually clean */
1164 return prefix_match_network_statement(net
, CONNECTED_PREFIX(co
));
1167 static void ospf_update_interface_area(struct connected
*co
,
1168 struct ospf_area
*area
)
1170 struct ospf_interface
*oi
= ospf_if_table_lookup(co
->ifp
, co
->address
);
1172 /* nothing to be done case */
1173 if (oi
&& oi
->area
== area
) {
1180 add_ospf_interface(co
, area
);
1183 /* Run OSPF for the given subnet, taking into account the following
1184 * possible sources of area configuration, in the given order of preference:
1186 * - Whether there is interface+address specific area configuration
1187 * - Whether there is a default area for the interface
1188 * - Whether there is an area given as a parameter.
1189 * - If no specific network prefix/area is supplied, whether there's
1190 * a matching network configured.
1192 static void ospf_network_run_subnet(struct ospf
*ospf
, struct connected
*co
,
1194 struct ospf_area
*given_area
)
1196 struct ospf_interface
*oi
;
1197 struct ospf_if_params
*params
;
1198 struct ospf_area
*area
= NULL
;
1199 struct route_node
*rn
;
1202 if (CHECK_FLAG(co
->flags
, ZEBRA_IFA_SECONDARY
))
1205 if (co
->address
->family
!= AF_INET
)
1208 /* Try determine the appropriate area for this interface + address
1209 * Start by checking interface config
1211 params
= ospf_lookup_if_params(co
->ifp
, co
->address
->u
.prefix4
);
1212 if (params
&& OSPF_IF_PARAM_CONFIGURED(params
, if_area
))
1213 area
= ospf_area_get(ospf
, params
->if_area
);
1215 params
= IF_DEF_PARAMS(co
->ifp
);
1216 if (OSPF_IF_PARAM_CONFIGURED(params
, if_area
))
1217 area
= ospf_area_get(ospf
, params
->if_area
);
1220 /* If we've found an interface and/or addr specific area, then we're
1224 ospf_update_interface_area(co
, area
);
1228 /* Otherwise, only remaining possibility is a matching network statement
1231 assert(given_area
!= NULL
);
1233 /* Which either was supplied as a parameter.. (e.g. cause a new
1234 * network/area was just added)..
1236 if (p
->family
== co
->address
->family
1237 && ospf_network_match_iface(co
, p
))
1238 ospf_update_interface_area(co
, given_area
);
1243 /* Else we have to search the existing network/area config to see
1246 for (rn
= route_top(ospf
->networks
); rn
; rn
= route_next(rn
))
1247 if (rn
->info
!= NULL
&& ospf_network_match_iface(co
, &rn
->p
)) {
1248 struct ospf_network
*network
=
1249 (struct ospf_network
*)rn
->info
;
1250 area
= ospf_area_get(ospf
, network
->area_id
);
1251 ospf_update_interface_area(co
, area
);
1255 /* If the subnet isn't in any area, deconfigure */
1256 if (!configed
&& (oi
= ospf_if_table_lookup(co
->ifp
, co
->address
)))
1260 static void ospf_network_run_interface(struct ospf
*ospf
, struct interface
*ifp
,
1262 struct ospf_area
*given_area
)
1264 struct listnode
*cnode
;
1265 struct connected
*co
;
1267 if (memcmp(ifp
->name
, "VLINK", 5) == 0)
1270 /* Network prefix without area is nonsensical */
1272 assert(given_area
!= NULL
);
1274 /* if interface prefix is match specified prefix,
1275 then create socket and join multicast group. */
1276 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, co
))
1277 ospf_network_run_subnet(ospf
, co
, p
, given_area
);
1280 static void ospf_network_run(struct prefix
*p
, struct ospf_area
*area
)
1282 struct vrf
*vrf
= vrf_lookup_by_id(area
->ospf
->vrf_id
);
1283 struct interface
*ifp
;
1285 /* Schedule Router ID Update. */
1286 if (area
->ospf
->router_id
.s_addr
== 0)
1287 ospf_router_id_update(area
->ospf
);
1289 /* Get target interface. */
1290 FOR_ALL_INTERFACES (vrf
, ifp
)
1291 ospf_network_run_interface(area
->ospf
, ifp
, p
, area
);
1294 void ospf_ls_upd_queue_empty(struct ospf_interface
*oi
)
1296 struct route_node
*rn
;
1297 struct listnode
*node
, *nnode
;
1299 struct ospf_lsa
*lsa
;
1301 /* empty ls update queue */
1302 for (rn
= route_top(oi
->ls_upd_queue
); rn
; rn
= route_next(rn
))
1303 if ((lst
= (struct list
*)rn
->info
)) {
1304 for (ALL_LIST_ELEMENTS(lst
, node
, nnode
, lsa
))
1305 ospf_lsa_unlock(&lsa
); /* oi->ls_upd_queue */
1306 list_delete_and_null(&lst
);
1310 /* remove update event */
1311 if (oi
->t_ls_upd_event
) {
1312 thread_cancel(oi
->t_ls_upd_event
);
1313 oi
->t_ls_upd_event
= NULL
;
1317 void ospf_if_update(struct ospf
*ospf
, struct interface
*ifp
)
1323 if (IS_DEBUG_OSPF_EVENT
)
1324 zlog_debug("%s: interface %s ifp->vrf_id %u ospf vrf %s vrf_id %u router_id %s",
1325 __PRETTY_FUNCTION__
, ifp
->name
, ifp
->vrf_id
,
1326 ospf_vrf_id_to_name(ospf
->vrf_id
), ospf
->vrf_id
,
1327 inet_ntoa(ospf
->router_id
));
1329 /* OSPF must be ready. */
1330 if (!ospf_is_ready(ospf
))
1333 ospf_network_run_interface(ospf
, ifp
, NULL
, NULL
);
1335 /* Update connected redistribute. */
1336 update_redistributed(ospf
, 1);
1339 void ospf_remove_vls_through_area(struct ospf
*ospf
, struct ospf_area
*area
)
1341 struct listnode
*node
, *nnode
;
1342 struct ospf_vl_data
*vl_data
;
1344 for (ALL_LIST_ELEMENTS(ospf
->vlinks
, node
, nnode
, vl_data
))
1345 if (IPV4_ADDR_SAME(&vl_data
->vl_area_id
, &area
->area_id
))
1346 ospf_vl_delete(ospf
, vl_data
);
1350 static const struct message ospf_area_type_msg
[] = {
1351 {OSPF_AREA_DEFAULT
, "Default"},
1352 {OSPF_AREA_STUB
, "Stub"},
1353 {OSPF_AREA_NSSA
, "NSSA"},
1356 static void ospf_area_type_set(struct ospf_area
*area
, int type
)
1358 struct listnode
*node
;
1359 struct ospf_interface
*oi
;
1361 if (area
->external_routing
== type
) {
1362 if (IS_DEBUG_OSPF_EVENT
)
1363 zlog_debug("Area[%s]: Types are the same, ignored.",
1364 inet_ntoa(area
->area_id
));
1368 area
->external_routing
= type
;
1370 if (IS_DEBUG_OSPF_EVENT
)
1371 zlog_debug("Area[%s]: Configured as %s",
1372 inet_ntoa(area
->area_id
),
1373 lookup_msg(ospf_area_type_msg
, type
, NULL
));
1375 switch (area
->external_routing
) {
1376 case OSPF_AREA_DEFAULT
:
1377 for (ALL_LIST_ELEMENTS_RO(area
->oiflist
, node
, oi
))
1378 if (oi
->nbr_self
!= NULL
) {
1379 UNSET_FLAG(oi
->nbr_self
->options
,
1381 SET_FLAG(oi
->nbr_self
->options
, OSPF_OPTION_E
);
1384 case OSPF_AREA_STUB
:
1385 for (ALL_LIST_ELEMENTS_RO(area
->oiflist
, node
, oi
))
1386 if (oi
->nbr_self
!= NULL
) {
1387 if (IS_DEBUG_OSPF_EVENT
)
1389 "setting options on %s accordingly",
1391 UNSET_FLAG(oi
->nbr_self
->options
,
1393 UNSET_FLAG(oi
->nbr_self
->options
,
1395 if (IS_DEBUG_OSPF_EVENT
)
1396 zlog_debug("options set on %s: %x",
1397 IF_NAME(oi
), OPTIONS(oi
));
1400 case OSPF_AREA_NSSA
:
1401 for (ALL_LIST_ELEMENTS_RO(area
->oiflist
, node
, oi
))
1402 if (oi
->nbr_self
!= NULL
) {
1404 "setting nssa options on %s accordingly",
1406 UNSET_FLAG(oi
->nbr_self
->options
,
1408 SET_FLAG(oi
->nbr_self
->options
, OSPF_OPTION_NP
);
1409 zlog_debug("options set on %s: %x", IF_NAME(oi
),
1417 ospf_router_lsa_update_area(area
);
1418 ospf_schedule_abr_task(area
->ospf
);
1421 int ospf_area_shortcut_set(struct ospf
*ospf
, struct ospf_area
*area
, int mode
)
1423 if (area
->shortcut_configured
== mode
)
1426 area
->shortcut_configured
= mode
;
1427 ospf_router_lsa_update_area(area
);
1428 ospf_schedule_abr_task(ospf
);
1430 ospf_area_check_free(ospf
, area
->area_id
);
1435 int ospf_area_shortcut_unset(struct ospf
*ospf
, struct ospf_area
*area
)
1437 area
->shortcut_configured
= OSPF_SHORTCUT_DEFAULT
;
1438 ospf_router_lsa_update_area(area
);
1439 ospf_area_check_free(ospf
, area
->area_id
);
1440 ospf_schedule_abr_task(ospf
);
1445 static int ospf_area_vlink_count(struct ospf
*ospf
, struct ospf_area
*area
)
1447 struct ospf_vl_data
*vl
;
1448 struct listnode
*node
;
1451 for (ALL_LIST_ELEMENTS_RO(ospf
->vlinks
, node
, vl
))
1452 if (IPV4_ADDR_SAME(&vl
->vl_area_id
, &area
->area_id
))
1458 int ospf_area_display_format_set(struct ospf
*ospf
, struct ospf_area
*area
,
1461 area
->area_id_fmt
= df
;
1466 int ospf_area_stub_set(struct ospf
*ospf
, struct in_addr area_id
)
1468 struct ospf_area
*area
;
1470 area
= ospf_area_get(ospf
, area_id
);
1471 if (ospf_area_vlink_count(ospf
, area
))
1474 if (area
->external_routing
!= OSPF_AREA_STUB
)
1475 ospf_area_type_set(area
, OSPF_AREA_STUB
);
1480 int ospf_area_stub_unset(struct ospf
*ospf
, struct in_addr area_id
)
1482 struct ospf_area
*area
;
1484 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
1488 if (area
->external_routing
== OSPF_AREA_STUB
)
1489 ospf_area_type_set(area
, OSPF_AREA_DEFAULT
);
1491 ospf_area_check_free(ospf
, area_id
);
1496 int ospf_area_no_summary_set(struct ospf
*ospf
, struct in_addr area_id
)
1498 struct ospf_area
*area
;
1500 area
= ospf_area_get(ospf
, area_id
);
1501 area
->no_summary
= 1;
1506 int ospf_area_no_summary_unset(struct ospf
*ospf
, struct in_addr area_id
)
1508 struct ospf_area
*area
;
1510 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
1514 area
->no_summary
= 0;
1515 ospf_area_check_free(ospf
, area_id
);
1520 int ospf_area_nssa_no_summary_set(struct ospf
*ospf
, struct in_addr area_id
)
1522 struct ospf_area
*area
;
1524 area
= ospf_area_get(ospf
, area_id
);
1525 if (ospf_area_vlink_count(ospf
, area
))
1528 if (area
->external_routing
!= OSPF_AREA_NSSA
) {
1529 ospf_area_type_set(area
, OSPF_AREA_NSSA
);
1531 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1534 ospf_area_no_summary_set(ospf
, area_id
);
1539 int ospf_area_nssa_set(struct ospf
*ospf
, struct in_addr area_id
)
1541 struct ospf_area
*area
;
1543 area
= ospf_area_get(ospf
, area_id
);
1544 if (ospf_area_vlink_count(ospf
, area
))
1547 if (area
->external_routing
!= OSPF_AREA_NSSA
) {
1548 ospf_area_type_set(area
, OSPF_AREA_NSSA
);
1551 /* set NSSA area defaults */
1552 area
->no_summary
= 0;
1553 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1554 area
->NSSATranslatorState
= OSPF_NSSA_TRANSLATE_DISABLED
;
1555 area
->NSSATranslatorStabilityInterval
=
1556 OSPF_NSSA_TRANS_STABLE_DEFAULT
;
1561 int ospf_area_nssa_unset(struct ospf
*ospf
, struct in_addr area_id
, int argc
)
1563 struct ospf_area
*area
;
1565 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
1569 /* argc < 5 -> 'no area x nssa' */
1570 if (argc
< 5 && area
->external_routing
== OSPF_AREA_NSSA
) {
1572 /* set NSSA area defaults */
1573 area
->no_summary
= 0;
1574 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1575 area
->NSSATranslatorState
= OSPF_NSSA_TRANSLATE_DISABLED
;
1576 area
->NSSATranslatorStabilityInterval
=
1577 OSPF_NSSA_TRANS_STABLE_DEFAULT
;
1578 ospf_area_type_set(area
, OSPF_AREA_DEFAULT
);
1580 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1583 ospf_area_check_free(ospf
, area_id
);
1588 int ospf_area_nssa_translator_role_set(struct ospf
*ospf
,
1589 struct in_addr area_id
, int role
)
1591 struct ospf_area
*area
;
1593 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
1597 area
->NSSATranslatorRole
= role
;
1603 /* XXX: unused? Leave for symmetry? */
1605 ospf_area_nssa_translator_role_unset (struct ospf
*ospf
,
1606 struct in_addr area_id
)
1608 struct ospf_area
*area
;
1610 area
= ospf_area_lookup_by_area_id (ospf
, area_id
);
1614 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1616 ospf_area_check_free (ospf
, area_id
);
1622 int ospf_area_export_list_set(struct ospf
*ospf
, struct ospf_area
*area
,
1623 const char *list_name
)
1625 struct access_list
*list
;
1626 list
= access_list_lookup(AFI_IP
, list_name
);
1628 EXPORT_LIST(area
) = list
;
1630 if (EXPORT_NAME(area
))
1631 free(EXPORT_NAME(area
));
1633 EXPORT_NAME(area
) = strdup(list_name
);
1634 ospf_schedule_abr_task(ospf
);
1639 int ospf_area_export_list_unset(struct ospf
*ospf
, struct ospf_area
*area
)
1642 EXPORT_LIST(area
) = 0;
1644 if (EXPORT_NAME(area
))
1645 free(EXPORT_NAME(area
));
1647 EXPORT_NAME(area
) = NULL
;
1649 ospf_area_check_free(ospf
, area
->area_id
);
1651 ospf_schedule_abr_task(ospf
);
1656 int ospf_area_import_list_set(struct ospf
*ospf
, struct ospf_area
*area
,
1659 struct access_list
*list
;
1660 list
= access_list_lookup(AFI_IP
, name
);
1662 IMPORT_LIST(area
) = list
;
1664 if (IMPORT_NAME(area
))
1665 free(IMPORT_NAME(area
));
1667 IMPORT_NAME(area
) = strdup(name
);
1668 ospf_schedule_abr_task(ospf
);
1673 int ospf_area_import_list_unset(struct ospf
*ospf
, struct ospf_area
*area
)
1675 IMPORT_LIST(area
) = 0;
1677 if (IMPORT_NAME(area
))
1678 free(IMPORT_NAME(area
));
1680 IMPORT_NAME(area
) = NULL
;
1681 ospf_area_check_free(ospf
, area
->area_id
);
1683 ospf_schedule_abr_task(ospf
);
1688 int ospf_timers_refresh_set(struct ospf
*ospf
, int interval
)
1692 if (ospf
->lsa_refresh_interval
== interval
)
1695 time_left
= ospf
->lsa_refresh_interval
1696 - (monotime(NULL
) - ospf
->lsa_refresher_started
);
1698 if (time_left
> interval
) {
1699 OSPF_TIMER_OFF(ospf
->t_lsa_refresher
);
1700 thread_add_timer(master
, ospf_lsa_refresh_walker
, ospf
,
1701 interval
, &ospf
->t_lsa_refresher
);
1703 ospf
->lsa_refresh_interval
= interval
;
1708 int ospf_timers_refresh_unset(struct ospf
*ospf
)
1712 time_left
= ospf
->lsa_refresh_interval
1713 - (monotime(NULL
) - ospf
->lsa_refresher_started
);
1715 if (time_left
> OSPF_LSA_REFRESH_INTERVAL_DEFAULT
) {
1716 OSPF_TIMER_OFF(ospf
->t_lsa_refresher
);
1717 ospf
->t_lsa_refresher
= NULL
;
1718 thread_add_timer(master
, ospf_lsa_refresh_walker
, ospf
,
1719 OSPF_LSA_REFRESH_INTERVAL_DEFAULT
,
1720 &ospf
->t_lsa_refresher
);
1723 ospf
->lsa_refresh_interval
= OSPF_LSA_REFRESH_INTERVAL_DEFAULT
;
1729 static struct ospf_nbr_nbma
*ospf_nbr_nbma_new(void)
1731 struct ospf_nbr_nbma
*nbr_nbma
;
1733 nbr_nbma
= XCALLOC(MTYPE_OSPF_NEIGHBOR_STATIC
,
1734 sizeof(struct ospf_nbr_nbma
));
1736 nbr_nbma
->priority
= OSPF_NEIGHBOR_PRIORITY_DEFAULT
;
1737 nbr_nbma
->v_poll
= OSPF_POLL_INTERVAL_DEFAULT
;
1742 static void ospf_nbr_nbma_free(struct ospf_nbr_nbma
*nbr_nbma
)
1744 XFREE(MTYPE_OSPF_NEIGHBOR_STATIC
, nbr_nbma
);
1747 static void ospf_nbr_nbma_delete(struct ospf
*ospf
,
1748 struct ospf_nbr_nbma
*nbr_nbma
)
1750 struct route_node
*rn
;
1751 struct prefix_ipv4 p
;
1754 p
.prefix
= nbr_nbma
->addr
;
1755 p
.prefixlen
= IPV4_MAX_BITLEN
;
1757 rn
= route_node_lookup(ospf
->nbr_nbma
, (struct prefix
*)&p
);
1759 ospf_nbr_nbma_free(rn
->info
);
1761 route_unlock_node(rn
);
1762 route_unlock_node(rn
);
1766 static void ospf_nbr_nbma_down(struct ospf_nbr_nbma
*nbr_nbma
)
1768 OSPF_TIMER_OFF(nbr_nbma
->t_poll
);
1770 if (nbr_nbma
->nbr
) {
1771 nbr_nbma
->nbr
->nbr_nbma
= NULL
;
1772 OSPF_NSM_EVENT_EXECUTE(nbr_nbma
->nbr
, NSM_KillNbr
);
1776 listnode_delete(nbr_nbma
->oi
->nbr_nbma
, nbr_nbma
);
1779 static void ospf_nbr_nbma_add(struct ospf_nbr_nbma
*nbr_nbma
,
1780 struct ospf_interface
*oi
)
1782 struct ospf_neighbor
*nbr
;
1783 struct route_node
*rn
;
1786 if (oi
->type
!= OSPF_IFTYPE_NBMA
)
1789 if (nbr_nbma
->nbr
!= NULL
)
1792 if (IPV4_ADDR_SAME(&oi
->nbr_self
->address
.u
.prefix4
, &nbr_nbma
->addr
))
1796 listnode_add(oi
->nbr_nbma
, nbr_nbma
);
1798 /* Get neighbor information from table. */
1800 p
.prefixlen
= IPV4_MAX_BITLEN
;
1801 p
.u
.prefix4
= nbr_nbma
->addr
;
1803 rn
= route_node_get(oi
->nbrs
, (struct prefix
*)&p
);
1806 nbr
->nbr_nbma
= nbr_nbma
;
1807 nbr_nbma
->nbr
= nbr
;
1809 route_unlock_node(rn
);
1811 nbr
= rn
->info
= ospf_nbr_new(oi
);
1812 nbr
->state
= NSM_Down
;
1813 nbr
->src
= nbr_nbma
->addr
;
1814 nbr
->nbr_nbma
= nbr_nbma
;
1815 nbr
->priority
= nbr_nbma
->priority
;
1818 nbr_nbma
->nbr
= nbr
;
1820 OSPF_NSM_EVENT_EXECUTE(nbr
, NSM_Start
);
1824 void ospf_nbr_nbma_if_update(struct ospf
*ospf
, struct ospf_interface
*oi
)
1826 struct ospf_nbr_nbma
*nbr_nbma
;
1827 struct route_node
*rn
;
1828 struct prefix_ipv4 p
;
1830 if (oi
->type
!= OSPF_IFTYPE_NBMA
)
1833 for (rn
= route_top(ospf
->nbr_nbma
); rn
; rn
= route_next(rn
))
1834 if ((nbr_nbma
= rn
->info
))
1835 if (nbr_nbma
->oi
== NULL
&& nbr_nbma
->nbr
== NULL
) {
1837 p
.prefix
= nbr_nbma
->addr
;
1838 p
.prefixlen
= IPV4_MAX_BITLEN
;
1840 if (prefix_match(oi
->address
,
1841 (struct prefix
*)&p
))
1842 ospf_nbr_nbma_add(nbr_nbma
, oi
);
1846 struct ospf_nbr_nbma
*ospf_nbr_nbma_lookup(struct ospf
*ospf
,
1847 struct in_addr nbr_addr
)
1849 struct route_node
*rn
;
1850 struct prefix_ipv4 p
;
1853 p
.prefix
= nbr_addr
;
1854 p
.prefixlen
= IPV4_MAX_BITLEN
;
1856 rn
= route_node_lookup(ospf
->nbr_nbma
, (struct prefix
*)&p
);
1858 route_unlock_node(rn
);
1864 struct ospf_nbr_nbma
*ospf_nbr_nbma_lookup_next(struct ospf
*ospf
,
1865 struct in_addr
*addr
, int first
)
1868 struct ospf_nbr_nbma
*nbr_nbma
;
1869 struct listnode
*node
;
1876 for (ALL_LIST_ELEMENTS_RO (ospf
->nbr_nbma
, node
, nbr_nbma
))
1880 *addr
= nbr_nbma
->addr
;
1883 else if (ntohl (nbr_nbma
->addr
.s_addr
) > ntohl (addr
->s_addr
))
1885 *addr
= nbr_nbma
->addr
;
1893 int ospf_nbr_nbma_set(struct ospf
*ospf
, struct in_addr nbr_addr
)
1895 struct ospf_nbr_nbma
*nbr_nbma
;
1896 struct ospf_interface
*oi
;
1897 struct prefix_ipv4 p
;
1898 struct route_node
*rn
;
1899 struct listnode
*node
;
1901 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, nbr_addr
);
1905 nbr_nbma
= ospf_nbr_nbma_new();
1906 nbr_nbma
->addr
= nbr_addr
;
1909 p
.prefix
= nbr_addr
;
1910 p
.prefixlen
= IPV4_MAX_BITLEN
;
1912 rn
= route_node_get(ospf
->nbr_nbma
, (struct prefix
*)&p
);
1914 route_unlock_node(rn
);
1915 rn
->info
= nbr_nbma
;
1917 for (ALL_LIST_ELEMENTS_RO(ospf
->oiflist
, node
, oi
)) {
1918 if (oi
->type
== OSPF_IFTYPE_NBMA
)
1919 if (prefix_match(oi
->address
, (struct prefix
*)&p
)) {
1920 ospf_nbr_nbma_add(nbr_nbma
, oi
);
1928 int ospf_nbr_nbma_unset(struct ospf
*ospf
, struct in_addr nbr_addr
)
1930 struct ospf_nbr_nbma
*nbr_nbma
;
1932 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, nbr_addr
);
1933 if (nbr_nbma
== NULL
)
1936 ospf_nbr_nbma_down(nbr_nbma
);
1937 ospf_nbr_nbma_delete(ospf
, nbr_nbma
);
1942 int ospf_nbr_nbma_priority_set(struct ospf
*ospf
, struct in_addr nbr_addr
,
1945 struct ospf_nbr_nbma
*nbr_nbma
;
1947 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, nbr_addr
);
1948 if (nbr_nbma
== NULL
)
1951 if (nbr_nbma
->priority
!= priority
)
1952 nbr_nbma
->priority
= priority
;
1957 int ospf_nbr_nbma_priority_unset(struct ospf
*ospf
, struct in_addr nbr_addr
)
1959 struct ospf_nbr_nbma
*nbr_nbma
;
1961 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, nbr_addr
);
1962 if (nbr_nbma
== NULL
)
1965 if (nbr_nbma
!= OSPF_NEIGHBOR_PRIORITY_DEFAULT
)
1966 nbr_nbma
->priority
= OSPF_NEIGHBOR_PRIORITY_DEFAULT
;
1971 int ospf_nbr_nbma_poll_interval_set(struct ospf
*ospf
, struct in_addr nbr_addr
,
1972 unsigned int interval
)
1974 struct ospf_nbr_nbma
*nbr_nbma
;
1976 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, nbr_addr
);
1977 if (nbr_nbma
== NULL
)
1980 if (nbr_nbma
->v_poll
!= interval
) {
1981 nbr_nbma
->v_poll
= interval
;
1982 if (nbr_nbma
->oi
&& ospf_if_is_up(nbr_nbma
->oi
)) {
1983 OSPF_TIMER_OFF(nbr_nbma
->t_poll
);
1984 OSPF_POLL_TIMER_ON(nbr_nbma
->t_poll
, ospf_poll_timer
,
1992 int ospf_nbr_nbma_poll_interval_unset(struct ospf
*ospf
, struct in_addr addr
)
1994 struct ospf_nbr_nbma
*nbr_nbma
;
1996 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, addr
);
1997 if (nbr_nbma
== NULL
)
2000 if (nbr_nbma
->v_poll
!= OSPF_POLL_INTERVAL_DEFAULT
)
2001 nbr_nbma
->v_poll
= OSPF_POLL_INTERVAL_DEFAULT
;
2006 void ospf_master_init(struct thread_master
*master
)
2008 memset(&ospf_master
, 0, sizeof(struct ospf_master
));
2011 om
->ospf
= list_new();
2012 om
->master
= master
;
2015 /* Link OSPF instance to VRF. */
2016 void ospf_vrf_link(struct ospf
*ospf
, struct vrf
*vrf
)
2018 ospf
->vrf_id
= vrf
->vrf_id
;
2019 if (vrf
->info
!= (void *)ospf
)
2020 vrf
->info
= (void *)ospf
;
2023 /* Unlink OSPF instance from VRF. */
2024 void ospf_vrf_unlink(struct ospf
*ospf
, struct vrf
*vrf
)
2026 if (vrf
->info
== (void *)ospf
)
2028 ospf
->vrf_id
= VRF_UNKNOWN
;
2031 /* This is hook function for vrf create called as part of vrf_init */
2032 static int ospf_vrf_new(struct vrf
*vrf
)
2034 if (IS_DEBUG_OSPF_EVENT
)
2035 zlog_debug("%s: VRF Created: %s(%u)", __PRETTY_FUNCTION__
,
2036 vrf
->name
, vrf
->vrf_id
);
2041 /* This is hook function for vrf delete call as part of vrf_init */
2042 static int ospf_vrf_delete(struct vrf
*vrf
)
2044 if (IS_DEBUG_OSPF_EVENT
)
2045 zlog_debug("%s: VRF Deletion: %s(%u)", __PRETTY_FUNCTION__
,
2046 vrf
->name
, vrf
->vrf_id
);
2051 /* Enable OSPF VRF instance */
2052 static int ospf_vrf_enable(struct vrf
*vrf
)
2054 struct ospf
*ospf
= NULL
;
2055 vrf_id_t old_vrf_id
;
2058 if (IS_DEBUG_OSPF_EVENT
)
2059 zlog_debug("%s: VRF %s id %u enabled",
2060 __PRETTY_FUNCTION__
, vrf
->name
, vrf
->vrf_id
);
2062 ospf
= ospf_lookup_by_name(vrf
->name
);
2064 old_vrf_id
= ospf
->vrf_id
;
2065 /* We have instance configured, link to VRF and make it "up". */
2066 ospf_vrf_link(ospf
, vrf
);
2067 if (IS_DEBUG_OSPF_EVENT
)
2068 zlog_debug("%s: ospf linked to vrf %s vrf_id %u (old id %u)",
2069 __PRETTY_FUNCTION__
, vrf
->name
, ospf
->vrf_id
,
2072 if (old_vrf_id
!= ospf
->vrf_id
) {
2073 if (ospfd_privs
.change(ZPRIVS_RAISE
)) {
2074 zlog_err("ospf_sock_init: could not raise privs, %s",
2075 safe_strerror(errno
));
2077 ret
= ospf_sock_init(ospf
);
2078 if (ospfd_privs
.change(ZPRIVS_LOWER
)) {
2079 zlog_err("ospf_sock_init: could not lower privs, %s",
2080 safe_strerror(errno
));
2082 if (ret
< 0 || ospf
->fd
<= 0)
2084 thread_add_read(master
, ospf_read
, ospf
,
2085 ospf
->fd
, &ospf
->t_read
);
2086 ospf
->oi_running
= 1;
2087 ospf_zebra_vrf_register(ospf
);
2088 ospf_router_id_update(ospf
);
2095 /* Disable OSPF VRF instance */
2096 static int ospf_vrf_disable(struct vrf
*vrf
)
2098 struct ospf
*ospf
= NULL
;
2099 vrf_id_t old_vrf_id
= VRF_UNKNOWN
;
2101 if (vrf
->vrf_id
== VRF_DEFAULT
)
2104 if (IS_DEBUG_OSPF_EVENT
)
2105 zlog_debug("%s: VRF %s id %d disabled.",
2106 __PRETTY_FUNCTION__
, vrf
->name
, vrf
->vrf_id
);
2108 ospf
= ospf_lookup_by_name(vrf
->name
);
2110 old_vrf_id
= ospf
->vrf_id
;
2112 /* We have instance configured, unlink
2113 * from VRF and make it "down".
2115 ospf_vrf_unlink(ospf
, vrf
);
2116 ospf
->oi_running
= 0;
2117 if (IS_DEBUG_OSPF_EVENT
)
2118 zlog_debug("%s: ospf old_vrf_id %d unlinked",
2119 __PRETTY_FUNCTION__
, old_vrf_id
);
2120 thread_cancel(ospf
->t_read
);
2125 /* Note: This is a callback, the VRF will be deleted by the caller. */
2129 void ospf_vrf_init(void)
2131 vrf_init(ospf_vrf_new
, ospf_vrf_enable
,
2132 ospf_vrf_disable
, ospf_vrf_delete
);
2135 void ospf_vrf_terminate(void)
2140 const char *ospf_vrf_id_to_name(vrf_id_t vrf_id
)
2142 struct vrf
*vrf
= vrf_lookup_by_id(vrf_id
);
2144 return vrf
? vrf
->name
: "NIL";