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 () */
41 #include "lib_errors.h"
43 #include "ospfd/ospfd.h"
44 #include "ospfd/ospf_network.h"
45 #include "ospfd/ospf_interface.h"
46 #include "ospfd/ospf_ism.h"
47 #include "ospfd/ospf_asbr.h"
48 #include "ospfd/ospf_lsa.h"
49 #include "ospfd/ospf_lsdb.h"
50 #include "ospfd/ospf_neighbor.h"
51 #include "ospfd/ospf_nsm.h"
52 #include "ospfd/ospf_spf.h"
53 #include "ospfd/ospf_packet.h"
54 #include "ospfd/ospf_dump.h"
55 #include "ospfd/ospf_route.h"
56 #include "ospfd/ospf_zebra.h"
57 #include "ospfd/ospf_abr.h"
58 #include "ospfd/ospf_flood.h"
59 #include "ospfd/ospf_ase.h"
62 DEFINE_QOBJ_TYPE(ospf
)
64 /* OSPF process wide configuration. */
65 static struct ospf_master ospf_master
;
67 /* OSPF process wide configuration pointer to export. */
68 struct ospf_master
*om
;
70 extern struct zclient
*zclient
;
73 static void ospf_remove_vls_through_area(struct ospf
*, struct ospf_area
*);
74 static void ospf_network_free(struct ospf
*, struct ospf_network
*);
75 static void ospf_area_free(struct ospf_area
*);
76 static void ospf_network_run(struct prefix
*, struct ospf_area
*);
77 static void ospf_network_run_interface(struct ospf
*, struct interface
*,
78 struct prefix
*, struct ospf_area
*);
79 static void ospf_network_run_subnet(struct ospf
*, struct connected
*,
80 struct prefix
*, struct ospf_area
*);
81 static int ospf_network_match_iface(const struct connected
*,
82 const struct prefix
*);
83 static void ospf_finish_final(struct ospf
*);
85 #define OSPF_EXTERNAL_LSA_ORIGINATE_DELAY 1
87 void ospf_router_id_update(struct ospf
*ospf
)
89 struct vrf
*vrf
= vrf_lookup_by_id(ospf
->vrf_id
);
90 struct in_addr router_id
, router_id_old
;
91 struct ospf_interface
*oi
;
92 struct interface
*ifp
;
93 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
), inet_ntoa(router_id
));
126 if (!IPV4_ADDR_SAME(&router_id_old
, &router_id
)) {
128 for (ALL_LIST_ELEMENTS_RO(ospf
->oiflist
, node
, oi
)) {
129 /* Some nbrs are identified by router_id, these needs
130 * to be rebuilt. Possible optimization would be to do
131 * oi->nbr_self->router_id = router_id for
132 * !(virtual | ptop) links
134 ospf_nbr_self_reset(oi
, router_id
);
137 /* Flush (inline) all external LSAs based on the OSPF_LSA_SELF
140 struct route_node
*rn
;
141 struct ospf_lsa
*lsa
;
143 LSDB_LOOP (EXTERNAL_LSDB(ospf
), rn
, lsa
)
144 if (IS_LSA_SELF(lsa
))
145 ospf_lsa_flush_schedule(ospf
, lsa
);
148 ospf
->router_id
= router_id
;
149 if (IS_DEBUG_OSPF_EVENT
)
150 zlog_debug("Router-ID[NEW:%s]: Update",
151 inet_ntoa(ospf
->router_id
));
153 /* Flush (inline) all external LSAs which now match the new
155 need to adjust the OSPF_LSA_SELF flag, so the flush doesn't
157 asserts in ospf_refresher_unregister_lsa(). This step is
159 because the current quagga code does look-up for
161 based on the self router-id alone but expects OSPF_LSA_SELF
165 struct route_node
*rn
;
166 struct ospf_lsa
*lsa
;
168 LSDB_LOOP (EXTERNAL_LSDB(ospf
), rn
, lsa
) {
169 /* AdvRouter and Router ID is the same. */
170 if (IPV4_ADDR_SAME(&lsa
->data
->adv_router
,
173 OSPF_LSA_SELF_CHECKED
);
174 SET_FLAG(lsa
->flags
, OSPF_LSA_SELF
);
175 ospf_lsa_flush_schedule(ospf
, lsa
);
180 /* update router-lsa's for each area */
181 ospf_router_lsa_update(ospf
);
183 /* update ospf_interface's */
184 FOR_ALL_INTERFACES (vrf
, ifp
)
185 ospf_if_update(ospf
, ifp
);
187 ospf_external_lsa_rid_change(ospf
);
191 /* For OSPF area sort by area id. */
192 static int ospf_area_id_cmp(struct ospf_area
*a1
, struct ospf_area
*a2
)
194 if (ntohl(a1
->area_id
.s_addr
) > ntohl(a2
->area_id
.s_addr
))
196 if (ntohl(a1
->area_id
.s_addr
) < ntohl(a2
->area_id
.s_addr
))
201 /* Allocate new ospf structure. */
202 static struct ospf
*ospf_new(unsigned short instance
, const char *name
)
205 struct vrf
*vrf
= NULL
;
207 struct ospf
*new = XCALLOC(MTYPE_OSPF_TOP
, sizeof(struct ospf
));
209 new->instance
= instance
;
210 new->router_id
.s_addr
= htonl(0);
211 new->router_id_static
.s_addr
= htonl(0);
213 vrf
= vrf_lookup_by_name(name
);
215 new->vrf_id
= vrf
->vrf_id
;
217 new->vrf_id
= VRF_UNKNOWN
;
218 /* Freed in ospf_finish_final */
219 new->name
= XSTRDUP(MTYPE_OSPF_TOP
, name
);
220 if (IS_DEBUG_OSPF_EVENT
)
222 "%s: Create new ospf instance with vrf_name %s vrf_id %u",
223 __PRETTY_FUNCTION__
, name
, new->vrf_id
);
225 new->vrf_id
= VRF_DEFAULT
;
226 vrf
= vrf_lookup_by_id(VRF_DEFAULT
);
230 ospf_vrf_link(new, vrf
);
232 ospf_zebra_vrf_register(new);
234 new->abr_type
= OSPF_ABR_DEFAULT
;
235 new->oiflist
= list_new();
236 new->vlinks
= list_new();
237 new->areas
= list_new();
238 new->areas
->cmp
= (int (*)(void *, void *))ospf_area_id_cmp
;
239 new->networks
= route_table_init();
240 new->nbr_nbma
= route_table_init();
242 new->lsdb
= ospf_lsdb_new();
244 new->default_originate
= DEFAULT_ORIGINATE_NONE
;
246 new->passive_interface_default
= OSPF_IF_ACTIVE
;
248 new->new_external_route
= route_table_init();
249 new->old_external_route
= route_table_init();
250 new->external_lsas
= route_table_init();
252 new->stub_router_startup_time
= OSPF_STUB_ROUTER_UNCONFIGURED
;
253 new->stub_router_shutdown_time
= OSPF_STUB_ROUTER_UNCONFIGURED
;
254 new->stub_router_admin_set
= OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET
;
256 /* Distribute parameter init. */
257 for (i
= 0; i
<= ZEBRA_ROUTE_MAX
; i
++) {
260 new->default_metric
= -1;
261 new->ref_bandwidth
= OSPF_DEFAULT_REF_BANDWIDTH
;
264 new->min_ls_interval
= OSPF_MIN_LS_INTERVAL
;
265 new->min_ls_arrival
= OSPF_MIN_LS_ARRIVAL
;
267 /* SPF timer value init. */
268 new->spf_delay
= OSPF_SPF_DELAY_DEFAULT
;
269 new->spf_holdtime
= OSPF_SPF_HOLDTIME_DEFAULT
;
270 new->spf_max_holdtime
= OSPF_SPF_MAX_HOLDTIME_DEFAULT
;
271 new->spf_hold_multiplier
= 1;
274 new->maxage_delay
= OSPF_LSA_MAXAGE_REMOVE_DELAY_DEFAULT
;
275 new->maxage_lsa
= route_table_init();
276 new->t_maxage_walker
= NULL
;
277 thread_add_timer(master
, ospf_lsa_maxage_walker
, new,
278 OSPF_LSA_MAXAGE_CHECK_INTERVAL
, &new->t_maxage_walker
);
280 /* Distance table init. */
281 new->distance_table
= route_table_init();
283 new->lsa_refresh_queue
.index
= 0;
284 new->lsa_refresh_interval
= OSPF_LSA_REFRESH_INTERVAL_DEFAULT
;
285 new->t_lsa_refresher
= NULL
;
286 thread_add_timer(master
, ospf_lsa_refresh_walker
, new,
287 new->lsa_refresh_interval
, &new->t_lsa_refresher
);
288 new->lsa_refresher_started
= monotime(NULL
);
290 new->ibuf
= stream_new(OSPF_MAX_PACKET_SIZE
+ 1);
293 new->oi_write_q
= list_new();
294 new->write_oi_count
= OSPF_WRITE_INTERFACE_COUNT_DEFAULT
;
299 if ((ospf_sock_init(new)) < 0) {
300 if (new->vrf_id
!= VRF_UNKNOWN
)
303 "%s: ospf_sock_init is unable to open a socket",
307 thread_add_read(master
, ospf_read
, new, new->fd
, &new->t_read
);
312 struct ospf
*ospf_lookup_instance(unsigned short instance
)
315 struct listnode
*node
, *nnode
;
317 if (listcount(om
->ospf
) == 0)
320 for (ALL_LIST_ELEMENTS(om
->ospf
, node
, nnode
, ospf
))
321 if ((ospf
->instance
== 0 && instance
== 0)
322 || (ospf
->instance
&& instance
323 && ospf
->instance
== instance
))
329 static int ospf_is_ready(struct ospf
*ospf
)
331 /* OSPF must be on and Router-ID must be configured. */
332 if (!ospf
|| ospf
->router_id
.s_addr
== 0)
338 static void ospf_add(struct ospf
*ospf
)
340 listnode_add(om
->ospf
, ospf
);
343 static void ospf_delete(struct ospf
*ospf
)
345 listnode_delete(om
->ospf
, ospf
);
348 struct ospf
*ospf_lookup_by_inst_name(unsigned short instance
, const char *name
)
350 struct ospf
*ospf
= NULL
;
351 struct listnode
*node
, *nnode
;
353 if (name
== NULL
|| strmatch(name
, VRF_DEFAULT_NAME
))
354 return ospf_lookup_by_vrf_id(VRF_DEFAULT
);
356 for (ALL_LIST_ELEMENTS(om
->ospf
, node
, nnode
, ospf
)) {
357 if ((ospf
->instance
== instance
)
358 && ((ospf
->name
== NULL
&& name
== NULL
)
359 || (ospf
->name
&& name
360 && strcmp(ospf
->name
, name
) == 0)))
366 struct ospf
*ospf_get(unsigned short instance
, const char *name
, bool *created
)
370 /* vrf name provided call inst and name based api
371 * in case of no name pass default ospf instance */
373 ospf
= ospf_lookup_by_inst_name(instance
, name
);
375 ospf
= ospf_lookup_by_vrf_id(VRF_DEFAULT
);
377 *created
= (ospf
== NULL
);
379 ospf
= ospf_new(instance
, name
);
382 if (ospf
->router_id_static
.s_addr
== 0)
383 ospf_router_id_update(ospf
);
385 ospf_opaque_type11_lsa_init(ospf
);
391 struct ospf
*ospf_get_instance(unsigned short instance
, bool *created
)
395 ospf
= ospf_lookup_instance(instance
);
396 *created
= (ospf
== NULL
);
398 ospf
= ospf_new(instance
, NULL
/* VRF_DEFAULT*/);
401 if (ospf
->router_id_static
.s_addr
== 0)
402 ospf_router_id_update(ospf
);
404 ospf_opaque_type11_lsa_init(ospf
);
410 struct ospf
*ospf_lookup_by_vrf_id(vrf_id_t vrf_id
)
412 struct vrf
*vrf
= NULL
;
414 vrf
= vrf_lookup_by_id(vrf_id
);
417 return (vrf
->info
) ? (struct ospf
*)vrf
->info
: NULL
;
420 /* It should only be used when processing incoming info update from zebra.
421 * Other situations, it is not sufficient to lookup the ospf instance by
422 * vrf_name only without using the instance number.
424 static struct ospf
*ospf_lookup_by_name(const char *vrf_name
)
426 struct ospf
*ospf
= NULL
;
427 struct listnode
*node
, *nnode
;
429 for (ALL_LIST_ELEMENTS(om
->ospf
, node
, nnode
, ospf
))
430 if ((ospf
->name
== NULL
&& vrf_name
== NULL
)
431 || (ospf
->name
&& vrf_name
432 && strcmp(ospf
->name
, vrf_name
) == 0))
437 /* Handle the second half of deferred shutdown. This is called either
438 * from the deferred-shutdown timer thread, or directly through
439 * ospf_deferred_shutdown_check.
441 * Function is to cleanup G-R state, if required then call ospf_finish_final
442 * to complete shutdown of this ospf instance. Possibly exit if the
443 * whole process is being shutdown and this was the last OSPF instance.
445 static void ospf_deferred_shutdown_finish(struct ospf
*ospf
)
447 ospf
->stub_router_shutdown_time
= OSPF_STUB_ROUTER_UNCONFIGURED
;
448 OSPF_TIMER_OFF(ospf
->t_deferred_shutdown
);
450 ospf_finish_final(ospf
);
452 /* *ospf is now invalid */
454 /* ospfd being shut-down? If so, was this the last ospf instance? */
455 if (CHECK_FLAG(om
->options
, OSPF_MASTER_SHUTDOWN
)
456 && (listcount(om
->ospf
) == 0)) {
463 /* Timer thread for G-R */
464 static int ospf_deferred_shutdown_timer(struct thread
*t
)
466 struct ospf
*ospf
= THREAD_ARG(t
);
468 ospf_deferred_shutdown_finish(ospf
);
473 /* Check whether deferred-shutdown must be scheduled, otherwise call
474 * down directly into second-half of instance shutdown.
476 static void ospf_deferred_shutdown_check(struct ospf
*ospf
)
478 unsigned long timeout
;
480 struct ospf_area
*area
;
482 /* deferred shutdown already running? */
483 if (ospf
->t_deferred_shutdown
)
486 /* Should we try push out max-metric LSAs? */
487 if (ospf
->stub_router_shutdown_time
!= OSPF_STUB_ROUTER_UNCONFIGURED
) {
488 for (ALL_LIST_ELEMENTS_RO(ospf
->areas
, ln
, area
)) {
489 SET_FLAG(area
->stub_router_state
,
490 OSPF_AREA_ADMIN_STUB_ROUTED
);
492 if (!CHECK_FLAG(area
->stub_router_state
,
493 OSPF_AREA_IS_STUB_ROUTED
))
494 ospf_router_lsa_update_area(area
);
496 timeout
= ospf
->stub_router_shutdown_time
;
498 /* No timer needed */
499 ospf_deferred_shutdown_finish(ospf
);
503 OSPF_TIMER_ON(ospf
->t_deferred_shutdown
, ospf_deferred_shutdown_timer
,
508 /* Shut down the entire process */
509 void ospf_terminate(void)
512 struct listnode
*node
, *nnode
;
514 /* shutdown already in progress */
515 if (CHECK_FLAG(om
->options
, OSPF_MASTER_SHUTDOWN
))
518 SET_FLAG(om
->options
, OSPF_MASTER_SHUTDOWN
);
520 /* exit immediately if OSPF not actually running */
521 if (listcount(om
->ospf
) == 0)
525 for (ALL_LIST_ELEMENTS(om
->ospf
, node
, nnode
, ospf
))
528 /* Cleanup route maps */
531 /* reverse prefix_list_init */
532 prefix_list_add_hook(NULL
);
533 prefix_list_delete_hook(NULL
);
536 /* Cleanup vrf info */
537 ospf_vrf_terminate();
539 /* Deliberately go back up, hopefully to thread scheduler, as
540 * One or more ospf_finish()'s may have deferred shutdown to a timer
543 zclient_stop(zclient
);
544 zclient_free(zclient
);
549 void ospf_finish(struct ospf
*ospf
)
551 /* let deferred shutdown decide */
552 ospf_deferred_shutdown_check(ospf
);
554 /* if ospf_deferred_shutdown returns, then ospf_finish_final is
555 * deferred to expiry of G-S timer thread. Return back up, hopefully
556 * to thread scheduler.
561 /* Final cleanup of ospf instance */
562 static void ospf_finish_final(struct ospf
*ospf
)
564 struct vrf
*vrf
= vrf_lookup_by_id(ospf
->vrf_id
);
565 struct route_node
*rn
;
566 struct ospf_nbr_nbma
*nbr_nbma
;
567 struct ospf_lsa
*lsa
;
568 struct interface
*ifp
;
569 struct ospf_interface
*oi
;
570 struct ospf_area
*area
;
571 struct ospf_vl_data
*vl_data
;
572 struct listnode
*node
, *nnode
;
577 ospf_opaque_type11_lsa_term(ospf
);
579 ospf_opaque_finish();
581 ospf_flush_self_originated_lsas_now(ospf
);
583 /* Unregister redistribution */
584 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
585 struct list
*red_list
;
586 struct ospf_redist
*red
;
588 red_list
= ospf
->redist
[i
];
592 for (ALL_LIST_ELEMENTS(red_list
, node
, nnode
, red
)) {
593 ospf_redistribute_unset(ospf
, i
, red
->instance
);
594 ospf_redist_del(ospf
, i
, red
->instance
);
597 ospf_redistribute_default_set(ospf
, DEFAULT_ORIGINATE_NONE
, 0, 0);
599 for (ALL_LIST_ELEMENTS(ospf
->areas
, node
, nnode
, area
))
600 ospf_remove_vls_through_area(ospf
, area
);
602 for (ALL_LIST_ELEMENTS(ospf
->vlinks
, node
, nnode
, vl_data
))
603 ospf_vl_delete(ospf
, vl_data
);
605 list_delete(&ospf
->vlinks
);
607 /* Remove any ospf interface config params */
608 FOR_ALL_INTERFACES (vrf
, ifp
) {
609 struct ospf_if_params
*params
;
611 params
= IF_DEF_PARAMS(ifp
);
612 if (OSPF_IF_PARAM_CONFIGURED(params
, if_area
))
613 UNSET_IF_PARAM(params
, if_area
);
616 /* Reset interface. */
617 for (ALL_LIST_ELEMENTS(ospf
->oiflist
, node
, nnode
, oi
))
619 list_delete(&ospf
->oiflist
);
620 ospf
->oi_running
= 0;
622 /* De-Register VRF */
623 ospf_zebra_vrf_deregister(ospf
);
625 /* Clear static neighbors */
626 for (rn
= route_top(ospf
->nbr_nbma
); rn
; rn
= route_next(rn
))
627 if ((nbr_nbma
= rn
->info
)) {
628 OSPF_POLL_TIMER_OFF(nbr_nbma
->t_poll
);
631 nbr_nbma
->nbr
->nbr_nbma
= NULL
;
632 nbr_nbma
->nbr
= NULL
;
636 listnode_delete(nbr_nbma
->oi
->nbr_nbma
,
641 XFREE(MTYPE_OSPF_NEIGHBOR_STATIC
, nbr_nbma
);
644 route_table_finish(ospf
->nbr_nbma
);
646 /* Clear networks and Areas. */
647 for (rn
= route_top(ospf
->networks
); rn
; rn
= route_next(rn
)) {
648 struct ospf_network
*network
;
650 if ((network
= rn
->info
) != NULL
) {
651 ospf_network_free(ospf
, network
);
653 route_unlock_node(rn
);
656 route_table_finish(ospf
->networks
);
658 for (ALL_LIST_ELEMENTS(ospf
->areas
, node
, nnode
, area
)) {
659 listnode_delete(ospf
->areas
, area
);
660 ospf_area_free(area
);
663 /* Cancel all timers. */
664 OSPF_TIMER_OFF(ospf
->t_read
);
665 OSPF_TIMER_OFF(ospf
->t_write
);
666 OSPF_TIMER_OFF(ospf
->t_spf_calc
);
667 OSPF_TIMER_OFF(ospf
->t_ase_calc
);
668 OSPF_TIMER_OFF(ospf
->t_maxage
);
669 OSPF_TIMER_OFF(ospf
->t_maxage_walker
);
670 OSPF_TIMER_OFF(ospf
->t_abr_task
);
671 OSPF_TIMER_OFF(ospf
->t_asbr_check
);
672 OSPF_TIMER_OFF(ospf
->t_distribute_update
);
673 OSPF_TIMER_OFF(ospf
->t_lsa_refresher
);
674 OSPF_TIMER_OFF(ospf
->t_opaque_lsa_self
);
675 OSPF_TIMER_OFF(ospf
->t_sr_update
);
677 LSDB_LOOP (OPAQUE_AS_LSDB(ospf
), rn
, lsa
)
678 ospf_discard_from_db(ospf
, ospf
->lsdb
, lsa
);
679 LSDB_LOOP (EXTERNAL_LSDB(ospf
), rn
, lsa
)
680 ospf_discard_from_db(ospf
, ospf
->lsdb
, lsa
);
682 ospf_lsdb_delete_all(ospf
->lsdb
);
683 ospf_lsdb_free(ospf
->lsdb
);
685 for (rn
= route_top(ospf
->maxage_lsa
); rn
; rn
= route_next(rn
)) {
686 if ((lsa
= rn
->info
) != NULL
) {
687 ospf_lsa_unlock(&lsa
);
690 route_unlock_node(rn
);
692 route_table_finish(ospf
->maxage_lsa
);
695 ospf_route_table_free(ospf
->old_table
);
696 if (ospf
->new_table
) {
697 ospf_route_delete(ospf
, ospf
->new_table
);
698 ospf_route_table_free(ospf
->new_table
);
701 ospf_rtrs_free(ospf
->old_rtrs
);
703 ospf_rtrs_free(ospf
->new_rtrs
);
704 if (ospf
->new_external_route
) {
705 ospf_route_delete(ospf
, ospf
->new_external_route
);
706 ospf_route_table_free(ospf
->new_external_route
);
708 if (ospf
->old_external_route
) {
709 ospf_route_delete(ospf
, ospf
->old_external_route
);
710 ospf_route_table_free(ospf
->old_external_route
);
712 if (ospf
->external_lsas
) {
713 ospf_ase_external_lsas_finish(ospf
->external_lsas
);
716 for (i
= ZEBRA_ROUTE_SYSTEM
; i
<= ZEBRA_ROUTE_MAX
; i
++) {
717 struct list
*ext_list
;
718 struct ospf_external
*ext
;
720 ext_list
= ospf
->external
[i
];
724 for (ALL_LIST_ELEMENTS(ext_list
, node
, nnode
, ext
)) {
725 if (ext
->external_info
)
726 for (rn
= route_top(ext
->external_info
); rn
;
727 rn
= route_next(rn
)) {
728 if (rn
->info
== NULL
)
731 XFREE(MTYPE_OSPF_EXTERNAL_INFO
,
734 route_unlock_node(rn
);
737 ospf_external_del(ospf
, i
, ext
->instance
);
741 ospf_distance_reset(ospf
);
742 route_table_finish(ospf
->distance_table
);
744 list_delete(&ospf
->areas
);
745 list_delete(&ospf
->oi_write_q
);
748 stream_free(ospf
->ibuf
);
753 vrf
= vrf_lookup_by_name(ospf
->name
);
755 ospf_vrf_unlink(ospf
, vrf
);
756 XFREE(MTYPE_OSPF_TOP
, ospf
->name
);
758 vrf
= vrf_lookup_by_id(VRF_DEFAULT
);
760 ospf_vrf_unlink(ospf
, vrf
);
763 XFREE(MTYPE_OSPF_TOP
, ospf
);
767 /* allocate new OSPF Area object */
768 static struct ospf_area
*ospf_area_new(struct ospf
*ospf
,
769 struct in_addr area_id
)
771 struct ospf_area
*new;
773 /* Allocate new config_network. */
774 new = XCALLOC(MTYPE_OSPF_AREA
, sizeof(struct ospf_area
));
778 new->area_id
= area_id
;
779 new->area_id_fmt
= OSPF_AREA_ID_FMT_DOTTEDQUAD
;
781 new->external_routing
= OSPF_AREA_DEFAULT
;
782 new->default_cost
= 1;
783 new->auth_type
= OSPF_AUTH_NULL
;
786 new->lsdb
= ospf_lsdb_new();
788 /* Self-originated LSAs initialize. */
789 new->router_lsa_self
= NULL
;
791 ospf_opaque_type10_lsa_init(new);
793 new->oiflist
= list_new();
794 new->ranges
= route_table_init();
796 if (area_id
.s_addr
== OSPF_AREA_BACKBONE
)
797 ospf
->backbone
= new;
802 static void ospf_area_free(struct ospf_area
*area
)
804 struct route_node
*rn
;
805 struct ospf_lsa
*lsa
;
807 ospf_opaque_type10_lsa_term(area
);
810 LSDB_LOOP (ROUTER_LSDB(area
), rn
, lsa
)
811 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
812 LSDB_LOOP (NETWORK_LSDB(area
), rn
, lsa
)
813 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
814 LSDB_LOOP (SUMMARY_LSDB(area
), rn
, lsa
)
815 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
816 LSDB_LOOP (ASBR_SUMMARY_LSDB(area
), rn
, lsa
)
817 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
819 LSDB_LOOP (NSSA_LSDB(area
), rn
, lsa
)
820 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
821 LSDB_LOOP (OPAQUE_AREA_LSDB(area
), rn
, lsa
)
822 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
823 LSDB_LOOP (OPAQUE_LINK_LSDB(area
), rn
, lsa
)
824 ospf_discard_from_db(area
->ospf
, area
->lsdb
, lsa
);
826 ospf_lsdb_delete_all(area
->lsdb
);
827 ospf_lsdb_free(area
->lsdb
);
829 ospf_lsa_unlock(&area
->router_lsa_self
);
831 route_table_finish(area
->ranges
);
832 list_delete(&area
->oiflist
);
834 if (EXPORT_NAME(area
))
835 free(EXPORT_NAME(area
));
837 if (IMPORT_NAME(area
))
838 free(IMPORT_NAME(area
));
841 OSPF_TIMER_OFF(area
->t_stub_router
);
842 OSPF_TIMER_OFF(area
->t_opaque_lsa_self
);
844 if (OSPF_IS_AREA_BACKBONE(area
))
845 area
->ospf
->backbone
= NULL
;
847 XFREE(MTYPE_OSPF_AREA
, area
);
850 void ospf_area_check_free(struct ospf
*ospf
, struct in_addr area_id
)
852 struct ospf_area
*area
;
854 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
855 if (area
&& listcount(area
->oiflist
) == 0 && area
->ranges
->top
== NULL
856 && !ospf_vl_count(ospf
, area
)
857 && area
->shortcut_configured
== OSPF_SHORTCUT_DEFAULT
858 && area
->external_routing
== OSPF_AREA_DEFAULT
859 && area
->no_summary
== 0 && area
->default_cost
== 1
860 && EXPORT_NAME(area
) == NULL
&& IMPORT_NAME(area
) == NULL
861 && area
->auth_type
== OSPF_AUTH_NULL
) {
862 listnode_delete(ospf
->areas
, area
);
863 ospf_area_free(area
);
867 struct ospf_area
*ospf_area_get(struct ospf
*ospf
, struct in_addr area_id
)
869 struct ospf_area
*area
;
871 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
873 area
= ospf_area_new(ospf
, area_id
);
874 listnode_add_sort(ospf
->areas
, area
);
875 ospf_check_abr_status(ospf
);
876 if (ospf
->stub_router_admin_set
877 == OSPF_STUB_ROUTER_ADMINISTRATIVE_SET
) {
878 SET_FLAG(area
->stub_router_state
,
879 OSPF_AREA_ADMIN_STUB_ROUTED
);
886 struct ospf_area
*ospf_area_lookup_by_area_id(struct ospf
*ospf
,
887 struct in_addr area_id
)
889 struct ospf_area
*area
;
890 struct listnode
*node
;
892 for (ALL_LIST_ELEMENTS_RO(ospf
->areas
, node
, area
))
893 if (IPV4_ADDR_SAME(&area
->area_id
, &area_id
))
899 void ospf_area_add_if(struct ospf_area
*area
, struct ospf_interface
*oi
)
901 listnode_add(area
->oiflist
, oi
);
904 void ospf_area_del_if(struct ospf_area
*area
, struct ospf_interface
*oi
)
906 listnode_delete(area
->oiflist
, oi
);
910 static void add_ospf_interface(struct connected
*co
, struct ospf_area
*area
)
912 struct ospf_interface
*oi
;
914 oi
= ospf_if_new(area
->ospf
, co
->ifp
, co
->address
);
919 oi
->params
= ospf_lookup_if_params(co
->ifp
, oi
->address
->u
.prefix4
);
920 oi
->output_cost
= ospf_if_get_output_cost(oi
);
922 /* Relate ospf interface to ospf instance. */
923 oi
->ospf
= area
->ospf
;
925 /* update network type as interface flag */
926 /* If network type is specified previously,
927 skip network type setting. */
928 oi
->type
= IF_DEF_PARAMS(co
->ifp
)->type
;
930 /* Add pseudo neighbor. */
931 ospf_nbr_self_reset(oi
, oi
->ospf
->router_id
);
933 ospf_area_add_if(oi
->area
, oi
);
936 * if router_id is not configured, dont bring up
938 * ospf_router_id_update() will call ospf_if_update
939 * whenever r-id is configured instead.
941 if ((area
->ospf
->router_id
.s_addr
!= 0) && if_is_operative(co
->ifp
))
945 static void update_redistributed(struct ospf
*ospf
, int add_to_ospf
)
947 struct route_node
*rn
;
948 struct external_info
*ei
;
949 struct ospf_external
*ext
;
951 if (ospf_is_type_redistributed(ospf
, ZEBRA_ROUTE_CONNECT
, 0)) {
952 ext
= ospf_external_lookup(ospf
, ZEBRA_ROUTE_CONNECT
, 0);
953 if ((ext
) && EXTERNAL_INFO(ext
)) {
954 for (rn
= route_top(EXTERNAL_INFO(ext
)); rn
;
955 rn
= route_next(rn
)) {
961 if (ospf_external_info_find_lsa(ospf
,
963 if (!ospf_distribute_check_connected(
965 ospf_external_lsa_flush(
968 ei
->ifindex
/*, ei->nexthop */);
970 if (!ospf_external_info_find_lsa(
972 if (ospf_distribute_check_connected(
974 ospf_external_lsa_originate(
982 /* Config network statement related functions. */
983 static struct ospf_network
*ospf_network_new(struct in_addr area_id
)
985 struct ospf_network
*new;
986 new = XCALLOC(MTYPE_OSPF_NETWORK
, sizeof(struct ospf_network
));
988 new->area_id
= area_id
;
989 new->area_id_fmt
= OSPF_AREA_ID_FMT_DOTTEDQUAD
;
994 static void ospf_network_free(struct ospf
*ospf
, struct ospf_network
*network
)
996 ospf_area_check_free(ospf
, network
->area_id
);
997 ospf_schedule_abr_task(ospf
);
998 XFREE(MTYPE_OSPF_NETWORK
, network
);
1001 int ospf_network_set(struct ospf
*ospf
, struct prefix_ipv4
*p
,
1002 struct in_addr area_id
, int df
)
1004 struct ospf_network
*network
;
1005 struct ospf_area
*area
;
1006 struct route_node
*rn
;
1008 rn
= route_node_get(ospf
->networks
, (struct prefix
*)p
);
1011 route_unlock_node(rn
);
1013 if (IPV4_ADDR_SAME(&area_id
, &network
->area_id
)) {
1016 /* There is already same network statement. */
1021 rn
->info
= network
= ospf_network_new(area_id
);
1022 network
->area_id_fmt
= df
;
1023 area
= ospf_area_get(ospf
, area_id
);
1024 ospf_area_display_format_set(ospf
, area
, df
);
1026 /* Run network config now. */
1027 ospf_network_run((struct prefix
*)p
, area
);
1029 /* Update connected redistribute. */
1030 update_redistributed(ospf
, 1); /* interfaces possibly added */
1032 ospf_area_check_free(ospf
, area_id
);
1037 int ospf_network_unset(struct ospf
*ospf
, struct prefix_ipv4
*p
,
1038 struct in_addr area_id
)
1040 struct route_node
*rn
;
1041 struct ospf_network
*network
;
1042 struct listnode
*node
, *nnode
;
1043 struct ospf_interface
*oi
;
1045 rn
= route_node_lookup(ospf
->networks
, (struct prefix
*)p
);
1050 route_unlock_node(rn
);
1051 if (!IPV4_ADDR_SAME(&area_id
, &network
->area_id
))
1054 ospf_network_free(ospf
, rn
->info
);
1056 route_unlock_node(rn
); /* initial reference */
1058 /* Find interfaces that are not configured already. */
1059 for (ALL_LIST_ELEMENTS(ospf
->oiflist
, node
, nnode
, oi
)) {
1061 if (oi
->type
== OSPF_IFTYPE_VIRTUALLINK
)
1064 ospf_network_run_subnet(ospf
, oi
->connected
, NULL
, NULL
);
1067 /* Update connected redistribute. */
1068 update_redistributed(ospf
, 0); /* interfaces possibly removed */
1069 ospf_area_check_free(ospf
, area_id
);
1074 /* Ensure there's an OSPF instance, as "ip ospf area" enabled OSPF means
1075 * there might not be any 'router ospf' config.
1077 * Otherwise, doesn't do anything different to ospf_if_update for now
1079 void ospf_interface_area_set(struct ospf
*ospf
, struct interface
*ifp
)
1084 ospf_if_update(ospf
, ifp
);
1085 /* if_update does a update_redistributed */
1090 void ospf_interface_area_unset(struct ospf
*ospf
, struct interface
*ifp
)
1092 struct route_node
*rn_oi
;
1095 return; /* Ospf not ready yet */
1097 /* Find interfaces that may need to be removed. */
1098 for (rn_oi
= route_top(IF_OIFS(ifp
)); rn_oi
;
1099 rn_oi
= route_next(rn_oi
)) {
1100 struct ospf_interface
*oi
= NULL
;
1102 if ((oi
= rn_oi
->info
) == NULL
)
1105 if (oi
->type
== OSPF_IFTYPE_VIRTUALLINK
)
1108 ospf_network_run_subnet(ospf
, oi
->connected
, NULL
, NULL
);
1111 /* Update connected redistribute. */
1112 update_redistributed(ospf
, 0); /* interfaces possibly removed */
1115 bool ospf_interface_area_is_already_set(struct ospf
*ospf
,
1116 struct interface
*ifp
)
1118 struct route_node
*rn_oi
;
1121 return false; /* Ospf not ready yet */
1123 /* Find interfaces that may need to be removed. */
1124 for (rn_oi
= route_top(IF_OIFS(ifp
)); rn_oi
;
1125 rn_oi
= route_next(rn_oi
)) {
1126 struct ospf_interface
*oi
= rn_oi
->info
;
1131 if (oi
->type
== OSPF_IFTYPE_VIRTUALLINK
)
1133 /* at least one route covered by interface
1134 * that implies already done
1141 /* Check whether interface matches given network
1142 * returns: 1, true. 0, false
1144 static int ospf_network_match_iface(const struct connected
*co
,
1145 const struct prefix
*net
)
1147 /* new approach: more elegant and conceptually clean */
1148 return prefix_match_network_statement(net
, CONNECTED_PREFIX(co
));
1151 static void ospf_update_interface_area(struct connected
*co
,
1152 struct ospf_area
*area
)
1154 struct ospf_interface
*oi
= ospf_if_table_lookup(co
->ifp
, co
->address
);
1156 /* nothing to be done case */
1157 if (oi
&& oi
->area
== area
) {
1164 add_ospf_interface(co
, area
);
1167 /* Run OSPF for the given subnet, taking into account the following
1168 * possible sources of area configuration, in the given order of preference:
1170 * - Whether there is interface+address specific area configuration
1171 * - Whether there is a default area for the interface
1172 * - Whether there is an area given as a parameter.
1173 * - If no specific network prefix/area is supplied, whether there's
1174 * a matching network configured.
1176 static void ospf_network_run_subnet(struct ospf
*ospf
, struct connected
*co
,
1178 struct ospf_area
*given_area
)
1180 struct ospf_interface
*oi
;
1181 struct ospf_if_params
*params
;
1182 struct ospf_area
*area
= NULL
;
1183 struct route_node
*rn
;
1186 if (CHECK_FLAG(co
->flags
, ZEBRA_IFA_SECONDARY
))
1189 if (co
->address
->family
!= AF_INET
)
1192 /* Try determine the appropriate area for this interface + address
1193 * Start by checking interface config
1195 params
= ospf_lookup_if_params(co
->ifp
, co
->address
->u
.prefix4
);
1196 if (params
&& OSPF_IF_PARAM_CONFIGURED(params
, if_area
))
1197 area
= ospf_area_get(ospf
, params
->if_area
);
1199 params
= IF_DEF_PARAMS(co
->ifp
);
1200 if (OSPF_IF_PARAM_CONFIGURED(params
, if_area
))
1201 area
= ospf_area_get(ospf
, params
->if_area
);
1204 /* If we've found an interface and/or addr specific area, then we're
1208 ospf_update_interface_area(co
, area
);
1212 /* Otherwise, only remaining possibility is a matching network statement
1215 assert(given_area
!= NULL
);
1217 /* Which either was supplied as a parameter.. (e.g. cause a new
1218 * network/area was just added)..
1220 if (p
->family
== co
->address
->family
1221 && ospf_network_match_iface(co
, p
))
1222 ospf_update_interface_area(co
, given_area
);
1227 /* Else we have to search the existing network/area config to see
1230 for (rn
= route_top(ospf
->networks
); rn
; rn
= route_next(rn
))
1231 if (rn
->info
!= NULL
&& ospf_network_match_iface(co
, &rn
->p
)) {
1232 struct ospf_network
*network
=
1233 (struct ospf_network
*)rn
->info
;
1234 area
= ospf_area_get(ospf
, network
->area_id
);
1235 ospf_update_interface_area(co
, area
);
1239 /* If the subnet isn't in any area, deconfigure */
1240 if (!configed
&& (oi
= ospf_if_table_lookup(co
->ifp
, co
->address
)))
1244 static void ospf_network_run_interface(struct ospf
*ospf
, struct interface
*ifp
,
1246 struct ospf_area
*given_area
)
1248 struct listnode
*cnode
;
1249 struct connected
*co
;
1251 if (memcmp(ifp
->name
, "VLINK", 5) == 0)
1254 /* Network prefix without area is nonsensical */
1256 assert(given_area
!= NULL
);
1258 /* if interface prefix is match specified prefix,
1259 then create socket and join multicast group. */
1260 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, co
))
1261 ospf_network_run_subnet(ospf
, co
, p
, given_area
);
1264 static void ospf_network_run(struct prefix
*p
, struct ospf_area
*area
)
1266 struct vrf
*vrf
= vrf_lookup_by_id(area
->ospf
->vrf_id
);
1267 struct interface
*ifp
;
1269 /* Schedule Router ID Update. */
1270 if (area
->ospf
->router_id
.s_addr
== 0)
1271 ospf_router_id_update(area
->ospf
);
1273 /* Get target interface. */
1274 FOR_ALL_INTERFACES (vrf
, ifp
)
1275 ospf_network_run_interface(area
->ospf
, ifp
, p
, area
);
1278 void ospf_ls_upd_queue_empty(struct ospf_interface
*oi
)
1280 struct route_node
*rn
;
1281 struct listnode
*node
, *nnode
;
1283 struct ospf_lsa
*lsa
;
1285 /* empty ls update queue */
1286 for (rn
= route_top(oi
->ls_upd_queue
); rn
; rn
= route_next(rn
))
1287 if ((lst
= (struct list
*)rn
->info
)) {
1288 for (ALL_LIST_ELEMENTS(lst
, node
, nnode
, lsa
))
1289 ospf_lsa_unlock(&lsa
); /* oi->ls_upd_queue */
1294 /* remove update event */
1295 if (oi
->t_ls_upd_event
) {
1296 thread_cancel(oi
->t_ls_upd_event
);
1297 oi
->t_ls_upd_event
= NULL
;
1301 void ospf_if_update(struct ospf
*ospf
, struct interface
*ifp
)
1307 if (IS_DEBUG_OSPF_EVENT
)
1309 "%s: interface %s ifp->vrf_id %u ospf vrf %s vrf_id %u router_id %s",
1310 __PRETTY_FUNCTION__
, ifp
->name
, ifp
->vrf_id
,
1311 ospf_vrf_id_to_name(ospf
->vrf_id
), ospf
->vrf_id
,
1312 inet_ntoa(ospf
->router_id
));
1314 /* OSPF must be ready. */
1315 if (!ospf_is_ready(ospf
))
1318 ospf_network_run_interface(ospf
, ifp
, NULL
, NULL
);
1320 /* Update connected redistribute. */
1321 update_redistributed(ospf
, 1);
1325 void ospf_remove_vls_through_area(struct ospf
*ospf
, struct ospf_area
*area
)
1327 struct listnode
*node
, *nnode
;
1328 struct ospf_vl_data
*vl_data
;
1330 for (ALL_LIST_ELEMENTS(ospf
->vlinks
, node
, nnode
, vl_data
))
1331 if (IPV4_ADDR_SAME(&vl_data
->vl_area_id
, &area
->area_id
))
1332 ospf_vl_delete(ospf
, vl_data
);
1336 static const struct message ospf_area_type_msg
[] = {
1337 {OSPF_AREA_DEFAULT
, "Default"},
1338 {OSPF_AREA_STUB
, "Stub"},
1339 {OSPF_AREA_NSSA
, "NSSA"},
1342 static void ospf_area_type_set(struct ospf_area
*area
, int type
)
1344 struct listnode
*node
;
1345 struct ospf_interface
*oi
;
1347 if (area
->external_routing
== type
) {
1348 if (IS_DEBUG_OSPF_EVENT
)
1349 zlog_debug("Area[%s]: Types are the same, ignored.",
1350 inet_ntoa(area
->area_id
));
1354 area
->external_routing
= type
;
1356 if (IS_DEBUG_OSPF_EVENT
)
1357 zlog_debug("Area[%s]: Configured as %s",
1358 inet_ntoa(area
->area_id
),
1359 lookup_msg(ospf_area_type_msg
, type
, NULL
));
1361 switch (area
->external_routing
) {
1362 case OSPF_AREA_DEFAULT
:
1363 for (ALL_LIST_ELEMENTS_RO(area
->oiflist
, node
, oi
))
1364 if (oi
->nbr_self
!= NULL
) {
1365 UNSET_FLAG(oi
->nbr_self
->options
,
1367 SET_FLAG(oi
->nbr_self
->options
, OSPF_OPTION_E
);
1370 case OSPF_AREA_STUB
:
1371 for (ALL_LIST_ELEMENTS_RO(area
->oiflist
, node
, oi
))
1372 if (oi
->nbr_self
!= NULL
) {
1373 if (IS_DEBUG_OSPF_EVENT
)
1375 "setting options on %s accordingly",
1377 UNSET_FLAG(oi
->nbr_self
->options
,
1379 UNSET_FLAG(oi
->nbr_self
->options
,
1381 if (IS_DEBUG_OSPF_EVENT
)
1382 zlog_debug("options set on %s: %x",
1383 IF_NAME(oi
), OPTIONS(oi
));
1386 case OSPF_AREA_NSSA
:
1387 for (ALL_LIST_ELEMENTS_RO(area
->oiflist
, node
, oi
))
1388 if (oi
->nbr_self
!= NULL
) {
1390 "setting nssa options on %s accordingly",
1392 UNSET_FLAG(oi
->nbr_self
->options
,
1394 SET_FLAG(oi
->nbr_self
->options
, OSPF_OPTION_NP
);
1395 zlog_debug("options set on %s: %x", IF_NAME(oi
),
1403 ospf_router_lsa_update_area(area
);
1404 ospf_schedule_abr_task(area
->ospf
);
1407 int ospf_area_shortcut_set(struct ospf
*ospf
, struct ospf_area
*area
, int mode
)
1409 if (area
->shortcut_configured
== mode
)
1412 area
->shortcut_configured
= mode
;
1413 ospf_router_lsa_update_area(area
);
1414 ospf_schedule_abr_task(ospf
);
1416 ospf_area_check_free(ospf
, area
->area_id
);
1421 int ospf_area_shortcut_unset(struct ospf
*ospf
, struct ospf_area
*area
)
1423 area
->shortcut_configured
= OSPF_SHORTCUT_DEFAULT
;
1424 ospf_router_lsa_update_area(area
);
1425 ospf_area_check_free(ospf
, area
->area_id
);
1426 ospf_schedule_abr_task(ospf
);
1431 static int ospf_area_vlink_count(struct ospf
*ospf
, struct ospf_area
*area
)
1433 struct ospf_vl_data
*vl
;
1434 struct listnode
*node
;
1437 for (ALL_LIST_ELEMENTS_RO(ospf
->vlinks
, node
, vl
))
1438 if (IPV4_ADDR_SAME(&vl
->vl_area_id
, &area
->area_id
))
1444 int ospf_area_display_format_set(struct ospf
*ospf
, struct ospf_area
*area
,
1447 area
->area_id_fmt
= df
;
1452 int ospf_area_stub_set(struct ospf
*ospf
, struct in_addr area_id
)
1454 struct ospf_area
*area
;
1456 area
= ospf_area_get(ospf
, area_id
);
1457 if (ospf_area_vlink_count(ospf
, area
))
1460 if (area
->external_routing
!= OSPF_AREA_STUB
)
1461 ospf_area_type_set(area
, OSPF_AREA_STUB
);
1466 int ospf_area_stub_unset(struct ospf
*ospf
, struct in_addr area_id
)
1468 struct ospf_area
*area
;
1470 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
1474 if (area
->external_routing
== OSPF_AREA_STUB
)
1475 ospf_area_type_set(area
, OSPF_AREA_DEFAULT
);
1477 ospf_area_check_free(ospf
, area_id
);
1482 int ospf_area_no_summary_set(struct ospf
*ospf
, struct in_addr area_id
)
1484 struct ospf_area
*area
;
1486 area
= ospf_area_get(ospf
, area_id
);
1487 area
->no_summary
= 1;
1492 int ospf_area_no_summary_unset(struct ospf
*ospf
, struct in_addr area_id
)
1494 struct ospf_area
*area
;
1496 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
1500 area
->no_summary
= 0;
1501 ospf_area_check_free(ospf
, area_id
);
1506 int ospf_area_nssa_no_summary_set(struct ospf
*ospf
, struct in_addr area_id
)
1508 struct ospf_area
*area
;
1510 area
= ospf_area_get(ospf
, area_id
);
1511 if (ospf_area_vlink_count(ospf
, area
))
1514 if (area
->external_routing
!= OSPF_AREA_NSSA
) {
1515 ospf_area_type_set(area
, OSPF_AREA_NSSA
);
1517 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1520 ospf_area_no_summary_set(ospf
, area_id
);
1525 int ospf_area_nssa_set(struct ospf
*ospf
, struct in_addr area_id
)
1527 struct ospf_area
*area
;
1529 area
= ospf_area_get(ospf
, area_id
);
1530 if (ospf_area_vlink_count(ospf
, area
))
1533 if (area
->external_routing
!= OSPF_AREA_NSSA
) {
1534 ospf_area_type_set(area
, OSPF_AREA_NSSA
);
1537 /* set NSSA area defaults */
1538 area
->no_summary
= 0;
1539 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1540 area
->NSSATranslatorState
= OSPF_NSSA_TRANSLATE_DISABLED
;
1541 area
->NSSATranslatorStabilityInterval
=
1542 OSPF_NSSA_TRANS_STABLE_DEFAULT
;
1547 int ospf_area_nssa_unset(struct ospf
*ospf
, struct in_addr area_id
, int argc
)
1549 struct ospf_area
*area
;
1551 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
1555 /* argc < 5 -> 'no area x nssa' */
1556 if (argc
< 5 && area
->external_routing
== OSPF_AREA_NSSA
) {
1558 /* set NSSA area defaults */
1559 area
->no_summary
= 0;
1560 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1561 area
->NSSATranslatorState
= OSPF_NSSA_TRANSLATE_DISABLED
;
1562 area
->NSSATranslatorStabilityInterval
=
1563 OSPF_NSSA_TRANS_STABLE_DEFAULT
;
1564 ospf_area_type_set(area
, OSPF_AREA_DEFAULT
);
1566 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1569 ospf_area_check_free(ospf
, area_id
);
1574 int ospf_area_nssa_translator_role_set(struct ospf
*ospf
,
1575 struct in_addr area_id
, int role
)
1577 struct ospf_area
*area
;
1579 area
= ospf_area_lookup_by_area_id(ospf
, area_id
);
1583 area
->NSSATranslatorRole
= role
;
1589 /* XXX: unused? Leave for symmetry? */
1591 ospf_area_nssa_translator_role_unset (struct ospf
*ospf
,
1592 struct in_addr area_id
)
1594 struct ospf_area
*area
;
1596 area
= ospf_area_lookup_by_area_id (ospf
, area_id
);
1600 area
->NSSATranslatorRole
= OSPF_NSSA_ROLE_CANDIDATE
;
1602 ospf_area_check_free (ospf
, area_id
);
1608 int ospf_area_export_list_set(struct ospf
*ospf
, struct ospf_area
*area
,
1609 const char *list_name
)
1611 struct access_list
*list
;
1612 list
= access_list_lookup(AFI_IP
, list_name
);
1614 EXPORT_LIST(area
) = list
;
1616 if (EXPORT_NAME(area
))
1617 free(EXPORT_NAME(area
));
1619 EXPORT_NAME(area
) = strdup(list_name
);
1620 ospf_schedule_abr_task(ospf
);
1625 int ospf_area_export_list_unset(struct ospf
*ospf
, struct ospf_area
*area
)
1628 EXPORT_LIST(area
) = 0;
1630 if (EXPORT_NAME(area
))
1631 free(EXPORT_NAME(area
));
1633 EXPORT_NAME(area
) = NULL
;
1635 ospf_area_check_free(ospf
, area
->area_id
);
1637 ospf_schedule_abr_task(ospf
);
1642 int ospf_area_import_list_set(struct ospf
*ospf
, struct ospf_area
*area
,
1645 struct access_list
*list
;
1646 list
= access_list_lookup(AFI_IP
, name
);
1648 IMPORT_LIST(area
) = list
;
1650 if (IMPORT_NAME(area
))
1651 free(IMPORT_NAME(area
));
1653 IMPORT_NAME(area
) = strdup(name
);
1654 ospf_schedule_abr_task(ospf
);
1659 int ospf_area_import_list_unset(struct ospf
*ospf
, struct ospf_area
*area
)
1661 IMPORT_LIST(area
) = 0;
1663 if (IMPORT_NAME(area
))
1664 free(IMPORT_NAME(area
));
1666 IMPORT_NAME(area
) = NULL
;
1667 ospf_area_check_free(ospf
, area
->area_id
);
1669 ospf_schedule_abr_task(ospf
);
1674 int ospf_timers_refresh_set(struct ospf
*ospf
, int interval
)
1678 if (ospf
->lsa_refresh_interval
== interval
)
1681 time_left
= ospf
->lsa_refresh_interval
1682 - (monotime(NULL
) - ospf
->lsa_refresher_started
);
1684 if (time_left
> interval
) {
1685 OSPF_TIMER_OFF(ospf
->t_lsa_refresher
);
1686 thread_add_timer(master
, ospf_lsa_refresh_walker
, ospf
,
1687 interval
, &ospf
->t_lsa_refresher
);
1689 ospf
->lsa_refresh_interval
= interval
;
1694 int ospf_timers_refresh_unset(struct ospf
*ospf
)
1698 time_left
= ospf
->lsa_refresh_interval
1699 - (monotime(NULL
) - ospf
->lsa_refresher_started
);
1701 if (time_left
> OSPF_LSA_REFRESH_INTERVAL_DEFAULT
) {
1702 OSPF_TIMER_OFF(ospf
->t_lsa_refresher
);
1703 ospf
->t_lsa_refresher
= NULL
;
1704 thread_add_timer(master
, ospf_lsa_refresh_walker
, ospf
,
1705 OSPF_LSA_REFRESH_INTERVAL_DEFAULT
,
1706 &ospf
->t_lsa_refresher
);
1709 ospf
->lsa_refresh_interval
= OSPF_LSA_REFRESH_INTERVAL_DEFAULT
;
1715 static struct ospf_nbr_nbma
*ospf_nbr_nbma_new(void)
1717 struct ospf_nbr_nbma
*nbr_nbma
;
1719 nbr_nbma
= XCALLOC(MTYPE_OSPF_NEIGHBOR_STATIC
,
1720 sizeof(struct ospf_nbr_nbma
));
1722 nbr_nbma
->priority
= OSPF_NEIGHBOR_PRIORITY_DEFAULT
;
1723 nbr_nbma
->v_poll
= OSPF_POLL_INTERVAL_DEFAULT
;
1728 static void ospf_nbr_nbma_free(struct ospf_nbr_nbma
*nbr_nbma
)
1730 XFREE(MTYPE_OSPF_NEIGHBOR_STATIC
, nbr_nbma
);
1733 static void ospf_nbr_nbma_delete(struct ospf
*ospf
,
1734 struct ospf_nbr_nbma
*nbr_nbma
)
1736 struct route_node
*rn
;
1737 struct prefix_ipv4 p
;
1740 p
.prefix
= nbr_nbma
->addr
;
1741 p
.prefixlen
= IPV4_MAX_BITLEN
;
1743 rn
= route_node_lookup(ospf
->nbr_nbma
, (struct prefix
*)&p
);
1745 ospf_nbr_nbma_free(rn
->info
);
1747 route_unlock_node(rn
);
1748 route_unlock_node(rn
);
1752 static void ospf_nbr_nbma_down(struct ospf_nbr_nbma
*nbr_nbma
)
1754 OSPF_TIMER_OFF(nbr_nbma
->t_poll
);
1756 if (nbr_nbma
->nbr
) {
1757 nbr_nbma
->nbr
->nbr_nbma
= NULL
;
1758 OSPF_NSM_EVENT_EXECUTE(nbr_nbma
->nbr
, NSM_KillNbr
);
1762 listnode_delete(nbr_nbma
->oi
->nbr_nbma
, nbr_nbma
);
1765 static void ospf_nbr_nbma_add(struct ospf_nbr_nbma
*nbr_nbma
,
1766 struct ospf_interface
*oi
)
1768 struct ospf_neighbor
*nbr
;
1769 struct route_node
*rn
;
1772 if (oi
->type
!= OSPF_IFTYPE_NBMA
)
1775 if (nbr_nbma
->nbr
!= NULL
)
1778 if (IPV4_ADDR_SAME(&oi
->nbr_self
->address
.u
.prefix4
, &nbr_nbma
->addr
))
1782 listnode_add(oi
->nbr_nbma
, nbr_nbma
);
1784 /* Get neighbor information from table. */
1786 p
.prefixlen
= IPV4_MAX_BITLEN
;
1787 p
.u
.prefix4
= nbr_nbma
->addr
;
1789 rn
= route_node_get(oi
->nbrs
, (struct prefix
*)&p
);
1792 nbr
->nbr_nbma
= nbr_nbma
;
1793 nbr_nbma
->nbr
= nbr
;
1795 route_unlock_node(rn
);
1797 nbr
= rn
->info
= ospf_nbr_new(oi
);
1798 nbr
->state
= NSM_Down
;
1799 nbr
->src
= nbr_nbma
->addr
;
1800 nbr
->nbr_nbma
= nbr_nbma
;
1801 nbr
->priority
= nbr_nbma
->priority
;
1804 nbr_nbma
->nbr
= nbr
;
1806 OSPF_NSM_EVENT_EXECUTE(nbr
, NSM_Start
);
1810 void ospf_nbr_nbma_if_update(struct ospf
*ospf
, struct ospf_interface
*oi
)
1812 struct ospf_nbr_nbma
*nbr_nbma
;
1813 struct route_node
*rn
;
1814 struct prefix_ipv4 p
;
1816 if (oi
->type
!= OSPF_IFTYPE_NBMA
)
1819 for (rn
= route_top(ospf
->nbr_nbma
); rn
; rn
= route_next(rn
))
1820 if ((nbr_nbma
= rn
->info
))
1821 if (nbr_nbma
->oi
== NULL
&& nbr_nbma
->nbr
== NULL
) {
1823 p
.prefix
= nbr_nbma
->addr
;
1824 p
.prefixlen
= IPV4_MAX_BITLEN
;
1826 if (prefix_match(oi
->address
,
1827 (struct prefix
*)&p
))
1828 ospf_nbr_nbma_add(nbr_nbma
, oi
);
1832 struct ospf_nbr_nbma
*ospf_nbr_nbma_lookup(struct ospf
*ospf
,
1833 struct in_addr nbr_addr
)
1835 struct route_node
*rn
;
1836 struct prefix_ipv4 p
;
1839 p
.prefix
= nbr_addr
;
1840 p
.prefixlen
= IPV4_MAX_BITLEN
;
1842 rn
= route_node_lookup(ospf
->nbr_nbma
, (struct prefix
*)&p
);
1844 route_unlock_node(rn
);
1850 struct ospf_nbr_nbma
*ospf_nbr_nbma_lookup_next(struct ospf
*ospf
,
1851 struct in_addr
*addr
, int first
)
1854 struct ospf_nbr_nbma
*nbr_nbma
;
1855 struct listnode
*node
;
1862 for (ALL_LIST_ELEMENTS_RO (ospf
->nbr_nbma
, node
, nbr_nbma
))
1866 *addr
= nbr_nbma
->addr
;
1869 else if (ntohl (nbr_nbma
->addr
.s_addr
) > ntohl (addr
->s_addr
))
1871 *addr
= nbr_nbma
->addr
;
1879 int ospf_nbr_nbma_set(struct ospf
*ospf
, struct in_addr nbr_addr
)
1881 struct ospf_nbr_nbma
*nbr_nbma
;
1882 struct ospf_interface
*oi
;
1883 struct prefix_ipv4 p
;
1884 struct route_node
*rn
;
1885 struct listnode
*node
;
1887 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, nbr_addr
);
1891 nbr_nbma
= ospf_nbr_nbma_new();
1892 nbr_nbma
->addr
= nbr_addr
;
1895 p
.prefix
= nbr_addr
;
1896 p
.prefixlen
= IPV4_MAX_BITLEN
;
1898 rn
= route_node_get(ospf
->nbr_nbma
, (struct prefix
*)&p
);
1900 route_unlock_node(rn
);
1901 rn
->info
= nbr_nbma
;
1903 for (ALL_LIST_ELEMENTS_RO(ospf
->oiflist
, node
, oi
)) {
1904 if (oi
->type
== OSPF_IFTYPE_NBMA
)
1905 if (prefix_match(oi
->address
, (struct prefix
*)&p
)) {
1906 ospf_nbr_nbma_add(nbr_nbma
, oi
);
1914 int ospf_nbr_nbma_unset(struct ospf
*ospf
, struct in_addr nbr_addr
)
1916 struct ospf_nbr_nbma
*nbr_nbma
;
1918 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, nbr_addr
);
1919 if (nbr_nbma
== NULL
)
1922 ospf_nbr_nbma_down(nbr_nbma
);
1923 ospf_nbr_nbma_delete(ospf
, nbr_nbma
);
1928 int ospf_nbr_nbma_priority_set(struct ospf
*ospf
, struct in_addr nbr_addr
,
1931 struct ospf_nbr_nbma
*nbr_nbma
;
1933 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, nbr_addr
);
1934 if (nbr_nbma
== NULL
)
1937 if (nbr_nbma
->priority
!= priority
)
1938 nbr_nbma
->priority
= priority
;
1943 int ospf_nbr_nbma_priority_unset(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
!= OSPF_NEIGHBOR_PRIORITY_DEFAULT
)
1952 nbr_nbma
->priority
= OSPF_NEIGHBOR_PRIORITY_DEFAULT
;
1957 int ospf_nbr_nbma_poll_interval_set(struct ospf
*ospf
, struct in_addr nbr_addr
,
1958 unsigned int interval
)
1960 struct ospf_nbr_nbma
*nbr_nbma
;
1962 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, nbr_addr
);
1963 if (nbr_nbma
== NULL
)
1966 if (nbr_nbma
->v_poll
!= interval
) {
1967 nbr_nbma
->v_poll
= interval
;
1968 if (nbr_nbma
->oi
&& ospf_if_is_up(nbr_nbma
->oi
)) {
1969 OSPF_TIMER_OFF(nbr_nbma
->t_poll
);
1970 OSPF_POLL_TIMER_ON(nbr_nbma
->t_poll
, ospf_poll_timer
,
1978 int ospf_nbr_nbma_poll_interval_unset(struct ospf
*ospf
, struct in_addr addr
)
1980 struct ospf_nbr_nbma
*nbr_nbma
;
1982 nbr_nbma
= ospf_nbr_nbma_lookup(ospf
, addr
);
1983 if (nbr_nbma
== NULL
)
1986 if (nbr_nbma
->v_poll
!= OSPF_POLL_INTERVAL_DEFAULT
)
1987 nbr_nbma
->v_poll
= OSPF_POLL_INTERVAL_DEFAULT
;
1992 void ospf_master_init(struct thread_master
*master
)
1994 memset(&ospf_master
, 0, sizeof(struct ospf_master
));
1997 om
->ospf
= list_new();
1998 om
->master
= master
;
2001 /* Link OSPF instance to VRF. */
2002 void ospf_vrf_link(struct ospf
*ospf
, struct vrf
*vrf
)
2004 ospf
->vrf_id
= vrf
->vrf_id
;
2005 if (vrf
->info
!= (void *)ospf
)
2006 vrf
->info
= (void *)ospf
;
2009 /* Unlink OSPF instance from VRF. */
2010 void ospf_vrf_unlink(struct ospf
*ospf
, struct vrf
*vrf
)
2012 if (vrf
->info
== (void *)ospf
)
2014 ospf
->vrf_id
= VRF_UNKNOWN
;
2017 /* This is hook function for vrf create called as part of vrf_init */
2018 static int ospf_vrf_new(struct vrf
*vrf
)
2020 if (IS_DEBUG_OSPF_EVENT
)
2021 zlog_debug("%s: VRF Created: %s(%u)", __PRETTY_FUNCTION__
,
2022 vrf
->name
, vrf
->vrf_id
);
2027 /* This is hook function for vrf delete call as part of vrf_init */
2028 static int ospf_vrf_delete(struct vrf
*vrf
)
2030 if (IS_DEBUG_OSPF_EVENT
)
2031 zlog_debug("%s: VRF Deletion: %s(%u)", __PRETTY_FUNCTION__
,
2032 vrf
->name
, vrf
->vrf_id
);
2037 static void ospf_set_redist_vrf_bitmaps(struct ospf
*ospf
)
2040 struct list
*red_list
;
2042 for (type
= 0; type
< ZEBRA_ROUTE_MAX
; type
++) {
2043 red_list
= ospf
->redist
[type
];
2046 if (IS_DEBUG_OSPF_EVENT
)
2048 "%s: setting redist vrf %d bitmap for type %d",
2049 __func__
, ospf
->vrf_id
, type
);
2050 vrf_bitmap_set(zclient
->redist
[AFI_IP
][type
], ospf
->vrf_id
);
2054 /* Enable OSPF VRF instance */
2055 static int ospf_vrf_enable(struct vrf
*vrf
)
2057 struct ospf
*ospf
= NULL
;
2058 vrf_id_t old_vrf_id
;
2061 if (IS_DEBUG_OSPF_EVENT
)
2062 zlog_debug("%s: VRF %s id %u enabled", __PRETTY_FUNCTION__
,
2063 vrf
->name
, vrf
->vrf_id
);
2065 ospf
= ospf_lookup_by_name(vrf
->name
);
2067 if (ospf
->name
&& strmatch(vrf
->name
, VRF_DEFAULT_NAME
)) {
2068 XFREE(MTYPE_OSPF_TOP
, ospf
->name
);
2071 old_vrf_id
= ospf
->vrf_id
;
2072 /* We have instance configured, link to VRF and make it "up". */
2073 ospf_vrf_link(ospf
, vrf
);
2074 if (IS_DEBUG_OSPF_EVENT
)
2076 "%s: ospf linked to vrf %s vrf_id %u (old id %u)",
2077 __PRETTY_FUNCTION__
, vrf
->name
, ospf
->vrf_id
,
2080 if (old_vrf_id
!= ospf
->vrf_id
) {
2081 frr_with_privs(&ospfd_privs
) {
2082 /* stop zebra redist to us for old vrf */
2083 zclient_send_dereg_requests(zclient
,
2086 ospf_set_redist_vrf_bitmaps(ospf
);
2088 /* start zebra redist to us for new vrf */
2089 ospf_zebra_vrf_register(ospf
);
2091 ret
= ospf_sock_init(ospf
);
2093 if (ret
< 0 || ospf
->fd
<= 0)
2095 thread_add_read(master
, ospf_read
, ospf
, ospf
->fd
,
2097 ospf
->oi_running
= 1;
2098 ospf_router_id_update(ospf
);
2105 /* Disable OSPF VRF instance */
2106 static int ospf_vrf_disable(struct vrf
*vrf
)
2108 struct ospf
*ospf
= NULL
;
2109 vrf_id_t old_vrf_id
= VRF_UNKNOWN
;
2111 if (vrf
->vrf_id
== VRF_DEFAULT
)
2114 if (IS_DEBUG_OSPF_EVENT
)
2115 zlog_debug("%s: VRF %s id %d disabled.", __PRETTY_FUNCTION__
,
2116 vrf
->name
, vrf
->vrf_id
);
2118 ospf
= ospf_lookup_by_name(vrf
->name
);
2120 old_vrf_id
= ospf
->vrf_id
;
2122 /* We have instance configured, unlink
2123 * from VRF and make it "down".
2125 ospf_vrf_unlink(ospf
, vrf
);
2126 ospf
->oi_running
= 0;
2127 if (IS_DEBUG_OSPF_EVENT
)
2128 zlog_debug("%s: ospf old_vrf_id %d unlinked",
2129 __PRETTY_FUNCTION__
, old_vrf_id
);
2130 thread_cancel(ospf
->t_read
);
2135 /* Note: This is a callback, the VRF will be deleted by the caller. */
2139 void ospf_vrf_init(void)
2141 vrf_init(ospf_vrf_new
, ospf_vrf_enable
, ospf_vrf_disable
,
2142 ospf_vrf_delete
, ospf_vrf_enable
);
2145 void ospf_vrf_terminate(void)
2150 const char *ospf_vrf_id_to_name(vrf_id_t vrf_id
)
2152 struct vrf
*vrf
= vrf_lookup_by_id(vrf_id
);
2154 return vrf
? vrf
->name
: "NIL";
2157 const char *ospf_get_name(const struct ospf
*ospf
)
2162 return VRF_DEFAULT_NAME
;