]>
git.ipfire.org Git - thirdparty/bird.git/blob - proto/ospf/ospf.c
4 * (c) 1999--2004 Ondrej Filip <feela@network.cz>
5 * (c) 2009--2014 Ondrej Zajicek <santiago@crfreenet.org>
6 * (c) 2009--2014 CZ.NIC z.s.p.o.
8 * Can be freely distributed and used under the terms of the GNU GPL.
12 * DOC: Open Shortest Path First (OSPF)
14 * The OSPF protocol is quite complicated and its complex implemenation is split
15 * to many files. In |ospf.c|, you will find mainly the interface for
16 * communication with the core (e.g., reconfiguration hooks, shutdown and
17 * initialisation and so on). File |iface.c| contains the interface state
18 * machine and functions for allocation and deallocation of OSPF's interface
19 * data structures. Source |neighbor.c| includes the neighbor state machine and
20 * functions for election of Designated Router and Backup Designated router. In
21 * |packet.c|, you will find various functions for sending and receiving generic
22 * OSPF packets. There are also routines for authentication and checksumming.
23 * In |hello.c|, there are routines for sending and receiving of hello packets
24 * as well as functions for maintaining wait times and the inactivity timer.
25 * Files |lsreq.c|, |lsack.c|, |dbdes.c| contain functions for sending and
26 * receiving of link-state requests, link-state acknowledgements and database
27 * descriptions respectively. In |lsupd.c|, there are functions for sending and
28 * receiving of link-state updates and also the flooding algorithm. Source
29 * |topology.c| is a place where routines for searching LSAs in the link-state
30 * database, adding and deleting them reside, there also are functions for
31 * originating of various types of LSAs (router LSA, net LSA, external LSA).
32 * File |rt.c| contains routines for calculating the routing table. |lsalib.c|
33 * is a set of various functions for working with the LSAs (endianity
34 * conversions, calculation of checksum etc.).
36 * One instance of the protocol is able to hold LSA databases for multiple OSPF
37 * areas, to exchange routing information between multiple neighbors and to
38 * calculate the routing tables. The core structure is &ospf_proto to which
39 * multiple &ospf_area and &ospf_iface structures are connected. &ospf_proto is
40 * also connected to &top_hash_graph which is a dynamic hashing structure that
41 * describes the link-state database. It allows fast search, addition and
42 * deletion. Each LSA is kept in two pieces: header and body. Both of them are
43 * kept in the endianity of the CPU.
45 * In OSPFv2 specification, it is implied that there is one IP prefix for each
46 * physical network/interface (unless it is an ptp link). But in modern systems,
47 * there might be more independent IP prefixes associated with an interface. To
48 * handle this situation, we have one &ospf_iface for each active IP prefix
49 * (instead for each active iface); This behaves like virtual interface for the
50 * purpose of OSPF. If we receive packet, we associate it with a proper virtual
51 * interface mainly according to its source address.
53 * OSPF keeps one socket per &ospf_iface. This allows us (compared to one socket
54 * approach) to evade problems with a limit of multicast groups per socket and
55 * with sending multicast packets to appropriate interface in a portable way.
56 * The socket is associated with underlying physical iface and should not
57 * receive packets received on other ifaces (unfortunately, this is not true on
58 * BSD). Generally, one packet can be received by more sockets (for example, if
59 * there are more &ospf_iface on one physical iface), therefore we explicitly
60 * filter received packets according to src/dst IP address and received iface.
62 * Vlinks are implemented using particularly degenerate form of &ospf_iface,
63 * which has several exceptions: it does not have its iface or socket (it copies
64 * these from 'parent' &ospf_iface) and it is present in iface list even when
65 * down (it is not freed in ospf_iface_down()).
67 * The heart beat of ospf is ospf_disp(). It is called at regular intervals
68 * (&ospf_proto->tick). It is responsible for aging and flushing of LSAs in the
69 * database, updating topology information in LSAs and for routing table
72 * To every &ospf_iface, we connect one or more &ospf_neighbor's -- a structure
73 * containing many timers and queues for building adjacency and for exchange of
76 * BIRD's OSPF implementation respects RFC2328 in every detail, but some of
77 * internal algorithms do differ. The RFC recommends making a snapshot of the
78 * link-state database when a new adjacency is forming and sending the database
79 * description packets based on the information in this snapshot. The database
80 * can be quite large in some networks, so rather we walk through a &slist
81 * structure which allows us to continue even if the actual LSA we were working
82 * with is deleted. New LSAs are added at the tail of this &slist.
84 * We also do not keep a separate OSPF routing table, because the core helps us
85 * by being able to recognize when a route is updated to an identical one and it
86 * suppresses the update automatically. Due to this, we can flush all the routes
87 * we have recalculated and also those we have deleted to the core's routing
88 * table and the core will take care of the rest. This simplifies the process
89 * and conserves memory.
91 * Supported standards:
92 * - RFC 2328 - main OSPFv2 standard
93 * - RFC 5340 - main OSPFv3 standard
94 * - RFC 3101 - OSPFv2 NSSA areas
95 * - RFC 3623 - OSPFv2 Graceful Restart
96 * - RFC 4576 - OSPFv2 VPN loop prevention
97 * - RFC 5187 - OSPFv3 Graceful Restart
98 * - RFC 5250 - OSPFv2 Opaque LSAs
99 * - RFC 5709 - OSPFv2 HMAC-SHA Cryptographic Authentication
100 * - RFC 5838 - OSPFv3 Support of Address Families
101 * - RFC 6549 - OSPFv2 Multi-Instance Extensions
102 * - RFC 6987 - OSPF Stub Router Advertisement
103 * - RFC 7166 - OSPFv3 Authentication Trailer
104 * - RFC 7770 - OSPF Router Information LSA
110 static int ospf_preexport(struct proto
*P
, rte
**new, struct linpool
*pool
);
111 static void ospf_make_tmp_attrs(struct rte
*rt
, struct linpool
*pool
);
112 static void ospf_store_tmp_attrs(struct rte
*rt
, struct linpool
*pool
);
113 static void ospf_reload_routes(struct channel
*C
);
114 static int ospf_rte_better(struct rte
*new, struct rte
*old
);
115 static int ospf_rte_same(struct rte
*new, struct rte
*old
);
116 static void ospf_disp(timer
*timer
);
120 add_area_nets(struct ospf_area
*oa
, struct ospf_area_config
*ac
)
122 struct ospf_proto
*p
= oa
->po
;
123 struct area_net_config
*anc
;
126 fib_init(&oa
->net_fib
, p
->p
.pool
, ospf_get_af(p
),
127 sizeof(struct area_net
), OFFSETOF(struct area_net
, fn
), 0, NULL
);
128 fib_init(&oa
->enet_fib
, p
->p
.pool
, ospf_get_af(p
),
129 sizeof(struct area_net
), OFFSETOF(struct area_net
, fn
), 0, NULL
);
131 WALK_LIST(anc
, ac
->net_list
)
133 an
= fib_get(&oa
->net_fib
, &anc
->prefix
);
134 an
->hidden
= anc
->hidden
;
137 WALK_LIST(anc
, ac
->enet_list
)
139 an
= fib_get(&oa
->enet_fib
, &anc
->prefix
);
140 an
->hidden
= anc
->hidden
;
146 ospf_opts(struct ospf_proto
*p
)
151 return ((ospf_is_ip6(p
) && !p
->af_mc
) ? OPT_V6
: 0) |
152 (!p
->stub_router
? OPT_R
: 0) | (p
->af_ext
? OPT_AF
: 0);
156 ospf_area_add(struct ospf_proto
*p
, struct ospf_area_config
*ac
)
158 struct ospf_area
*oa
;
160 OSPF_TRACE(D_EVENTS
, "Adding area %R", ac
->areaid
);
162 oa
= mb_allocz(p
->p
.pool
, sizeof(struct ospf_area
));
163 add_tail(&p
->area_list
, NODE oa
);
167 oa
->areaid
= ac
->areaid
;
170 fib_init(&oa
->rtr
, p
->p
.pool
, NET_IP4
, sizeof(ort
), OFFSETOF(ort
, fn
), 0, NULL
);
171 add_area_nets(oa
, ac
);
176 oa
->options
= ac
->type
| ospf_opts(p
);
178 ospf_notify_rt_lsa(oa
);
182 ospf_flush_area(struct ospf_proto
*p
, u32 areaid
)
184 struct top_hash_entry
*en
;
186 WALK_SLIST(en
, p
->lsal
)
187 if ((LSA_SCOPE(en
->lsa_type
) == LSA_SCOPE_AREA
) && (en
->domain
== areaid
))
188 ospf_flush_lsa(p
, en
);
192 ospf_area_remove(struct ospf_area
*oa
)
194 struct ospf_proto
*p
= oa
->po
;
195 OSPF_TRACE(D_EVENTS
, "Removing area %R", oa
->areaid
);
197 /* We suppose that interfaces are already removed */
198 ospf_flush_area(p
, oa
->areaid
);
201 fib_free(&oa
->net_fib
);
202 fib_free(&oa
->enet_fib
);
204 if (oa
->translator_timer
)
205 rfree(oa
->translator_timer
);
213 ospf_find_area(struct ospf_proto
*p
, u32 aid
)
215 struct ospf_area
*oa
;
216 WALK_LIST(oa
, p
->area_list
)
217 if (((struct ospf_area
*) oa
)->areaid
== aid
)
222 static struct ospf_iface
*
223 ospf_find_vlink(struct ospf_proto
*p
, u32 voa
, u32 vid
)
225 struct ospf_iface
*ifa
;
226 WALK_LIST(ifa
, p
->iface_list
)
227 if ((ifa
->type
== OSPF_IT_VLINK
) && (ifa
->voa
->areaid
== voa
) && (ifa
->vid
== vid
))
233 ospf_start_gr_recovery(struct ospf_proto
*p
)
235 OSPF_TRACE(D_EVENTS
, "Graceful restart started");
238 p
->gr_timeout
= current_time() + (p
->gr_time S
);
239 channel_graceful_restart_lock(p
->p
.main_channel
);
240 p
->p
.main_channel
->gr_wait
= 1;
242 /* NOTE: We should get end of grace period from non-volatile storage */
246 ospf_stop_gr_recovery(struct ospf_proto
*p
)
250 channel_graceful_restart_unlock(p
->p
.main_channel
);
252 /* Reorigination of router/network LSAs is already scheduled */
256 * NOTE: We should move channel_graceful_restart_unlock() to the end of
257 * ospf_disp() in order to have local LSA reorigination / LSAdb cleanup /
258 * routing table recomputation before official end of GR. It does not matter
259 * when we are single-threaded.
264 ospf_start(struct proto
*P
)
266 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
267 struct ospf_config
*c
= (struct ospf_config
*) (P
->cf
);
268 struct ospf_area_config
*ac
;
270 p
->router_id
= proto_get_router_id(P
->cf
);
272 p
->af_ext
= c
->af_ext
;
274 p
->rfc1583
= c
->rfc1583
;
275 p
->stub_router
= c
->stub_router
;
276 p
->merge_external
= c
->merge_external
;
277 p
->instance_id
= c
->instance_id
;
279 p
->vpn_pe
= c
->vpn_pe
;
281 p
->gr_mode
= c
->gr_mode
;
282 p
->gr_time
= c
->gr_time
;
284 p
->disp_timer
= tm_new_init(P
->pool
, ospf_disp
, p
, p
->tick S
, 0);
285 tm_start(p
->disp_timer
, 100 MS
);
288 p
->lsab
= mb_alloc(P
->pool
, p
->lsab_size
);
289 p
->nhpool
= lp_new(P
->pool
, 12*sizeof(struct nexthop
));
290 init_list(&(p
->iface_list
));
291 init_list(&(p
->area_list
));
292 fib_init(&p
->rtf
, P
->pool
, ospf_get_af(p
), sizeof(ort
), OFFSETOF(ort
, fn
), 0, NULL
);
294 idm_init(&p
->idm
, P
->pool
, 16);
296 p
->gr
= ospf_top_new(p
, P
->pool
);
297 s_init_list(&(p
->lsal
));
299 p
->flood_event
= ev_new_init(P
->pool
, ospf_flood_event
, p
);
301 p
->log_pkt_tbf
= (struct tbf
){ .rate
= 1, .burst
= 5 };
302 p
->log_lsa_tbf
= (struct tbf
){ .rate
= 4, .burst
= 20 };
304 /* Lock the channel when in GR recovery mode */
305 if (p
->p
.gr_recovery
&& (p
->gr_mode
== OSPF_GR_ABLE
))
306 ospf_start_gr_recovery(p
);
308 WALK_LIST(ac
, c
->area_list
)
309 ospf_area_add(p
, ac
);
312 ospf_open_vlink_sk(p
);
314 /* Add all virtual links */
315 struct ospf_iface_patt
*ic
;
316 WALK_LIST(ic
, c
->vlink_list
)
317 ospf_iface_new_vlink(p
, ic
);
323 ospf_dump(struct proto
*P
)
325 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
326 struct ospf_iface
*ifa
;
327 struct ospf_neighbor
*n
;
329 OSPF_TRACE(D_EVENTS
, "Area number: %d", p
->areano
);
331 WALK_LIST(ifa
, p
->iface_list
)
333 OSPF_TRACE(D_EVENTS
, "Interface: %s", ifa
->ifname
);
334 OSPF_TRACE(D_EVENTS
, "state: %u", ifa
->state
);
335 OSPF_TRACE(D_EVENTS
, "DR: %R", ifa
->drid
);
336 OSPF_TRACE(D_EVENTS
, "BDR: %R", ifa
->bdrid
);
337 WALK_LIST(n
, ifa
->neigh_list
)
339 OSPF_TRACE(D_EVENTS
, " neighbor %R in state %u", n
->rid
, n
->state
);
344 OSPF_TRACE(D_EVENTS, "LSA graph dump start:");
345 ospf_top_dump(p->gr, p);
346 OSPF_TRACE(D_EVENTS, "LSA graph dump finished");
351 static struct proto
*
352 ospf_init(struct proto_config
*CF
)
354 struct ospf_config
*cf
= (struct ospf_config
*) CF
;
355 struct proto
*P
= proto_new(CF
);
357 P
->main_channel
= proto_add_channel(P
, proto_cf_main_channel(CF
));
359 P
->rt_notify
= ospf_rt_notify
;
360 P
->if_notify
= ospf_if_notify
;
361 P
->ifa_notify
= cf
->ospf2
? ospf_ifa_notify2
: ospf_ifa_notify3
;
362 P
->preexport
= ospf_preexport
;
363 P
->reload_routes
= ospf_reload_routes
;
364 P
->make_tmp_attrs
= ospf_make_tmp_attrs
;
365 P
->store_tmp_attrs
= ospf_store_tmp_attrs
;
366 P
->rte_better
= ospf_rte_better
;
367 P
->rte_same
= ospf_rte_same
;
372 /* If new is better return 1 */
374 ospf_rte_better(struct rte
*new, struct rte
*old
)
376 if (new->u
.ospf
.metric1
== LSINFINITY
)
379 if(new->attrs
->source
< old
->attrs
->source
) return 1;
380 if(new->attrs
->source
> old
->attrs
->source
) return 0;
382 if(new->attrs
->source
== RTS_OSPF_EXT2
)
384 if(new->u
.ospf
.metric2
< old
->u
.ospf
.metric2
) return 1;
385 if(new->u
.ospf
.metric2
> old
->u
.ospf
.metric2
) return 0;
388 if (new->u
.ospf
.metric1
< old
->u
.ospf
.metric1
)
391 return 0; /* Old is shorter or same */
395 ospf_rte_same(struct rte
*new, struct rte
*old
)
397 /* new->attrs == old->attrs always */
399 new->u
.ospf
.metric1
== old
->u
.ospf
.metric1
&&
400 new->u
.ospf
.metric2
== old
->u
.ospf
.metric2
&&
401 new->u
.ospf
.tag
== old
->u
.ospf
.tag
&&
402 new->u
.ospf
.router_id
== old
->u
.ospf
.router_id
;
407 ospf_schedule_rtcalc(struct ospf_proto
*p
)
412 OSPF_TRACE(D_EVENTS
, "Scheduling routing table calculation");
417 ospf_reload_routes(struct channel
*C
)
419 struct ospf_proto
*p
= (struct ospf_proto
*) C
->proto
;
424 OSPF_TRACE(D_EVENTS
, "Scheduling routing table calculation with route reload");
430 * ospf_disp - invokes routing table calculation, aging and also area_disp()
431 * @timer: timer usually called every @ospf_proto->tick second, @timer->data
432 * point to @ospf_proto
435 ospf_disp(timer
* timer
)
437 struct ospf_proto
*p
= timer
->data
;
440 ospf_update_gr_recovery(p
);
442 /* Originate or flush local topology LSAs */
443 ospf_update_topology(p
);
446 ospf_update_lsadb(p
);
448 /* Calculate routing table */
455 * ospf_preexport - accept or reject new route from nest's routing table
456 * @P: OSPF protocol instance
457 * @new: the new route
458 * @attrs: list of attributes
459 * @pool: pool for allocation of attributes
461 * Its quite simple. It does not accept our own routes and leaves the decision on
462 * import to the filters.
465 ospf_preexport(struct proto
*P
, rte
**new, struct linpool
*pool UNUSED
)
467 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
468 struct ospf_area
*oa
= ospf_main_area(p
);
471 /* Reject our own routes */
472 if (e
->attrs
->src
->proto
== P
)
475 /* Do not export routes to stub areas */
483 ospf_make_tmp_attrs(struct rte
*rt
, struct linpool
*pool
)
485 rte_init_tmp_attrs(rt
, pool
, 4);
486 rte_make_tmp_attr(rt
, EA_OSPF_METRIC1
, EAF_TYPE_INT
, rt
->u
.ospf
.metric1
);
487 rte_make_tmp_attr(rt
, EA_OSPF_METRIC2
, EAF_TYPE_INT
, rt
->u
.ospf
.metric2
);
488 rte_make_tmp_attr(rt
, EA_OSPF_TAG
, EAF_TYPE_INT
, rt
->u
.ospf
.tag
);
489 rte_make_tmp_attr(rt
, EA_OSPF_ROUTER_ID
, EAF_TYPE_ROUTER_ID
, rt
->u
.ospf
.router_id
);
493 ospf_store_tmp_attrs(struct rte
*rt
, struct linpool
*pool
)
495 rte_init_tmp_attrs(rt
, pool
, 4);
496 rt
->u
.ospf
.metric1
= rte_store_tmp_attr(rt
, EA_OSPF_METRIC1
);
497 rt
->u
.ospf
.metric2
= rte_store_tmp_attr(rt
, EA_OSPF_METRIC2
);
498 rt
->u
.ospf
.tag
= rte_store_tmp_attr(rt
, EA_OSPF_TAG
);
499 rt
->u
.ospf
.router_id
= rte_store_tmp_attr(rt
, EA_OSPF_ROUTER_ID
);
503 * ospf_shutdown - Finish of OSPF instance
504 * @P: OSPF protocol instance
506 * RFC does not define any action that should be taken before router
507 * shutdown. To make my neighbors react as fast as possible, I send
508 * them hello packet with empty neighbor list. They should start
509 * their neighbor state machine with event %NEIGHBOR_1WAY.
512 ospf_shutdown(struct proto
*P
)
514 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
515 struct ospf_iface
*ifa
;
517 OSPF_TRACE(D_EVENTS
, "Shutdown requested");
519 if ((P
->down_code
== PDC_CMD_GR_DOWN
) && (p
->gr_mode
== OSPF_GR_ABLE
))
521 /* Originate Grace LSAs */
522 WALK_LIST(ifa
, p
->iface_list
)
523 ospf_originate_gr_lsa(p
, ifa
);
527 /* Send to all my neighbors 1WAY */
528 WALK_LIST(ifa
, p
->iface_list
)
529 ospf_iface_shutdown(ifa
);
532 /* Cleanup locked rta entries */
533 FIB_WALK(&p
->rtf
, ort
, nf
)
535 rta_free(nf
->old_rta
);
543 ospf_get_status(struct proto
*P
, byte
* buf
)
545 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
547 if (p
->p
.proto_state
== PS_DOWN
)
551 struct ospf_iface
*ifa
;
552 struct ospf_neighbor
*n
;
555 WALK_LIST(ifa
, p
->iface_list
)
556 WALK_LIST(n
, ifa
->neigh_list
) if (n
->state
== NEIGHBOR_FULL
)
560 strcpy(buf
, "Alone");
562 strcpy(buf
, "Running");
567 ospf_get_route_info(rte
* rte
, byte
* buf
)
569 char *type
= "<bug>";
571 switch (rte
->attrs
->source
)
587 buf
+= bsprintf(buf
, " %s", type
);
588 buf
+= bsprintf(buf
, " (%d/%d", rte
->pref
, rte
->u
.ospf
.metric1
);
589 if (rte
->attrs
->source
== RTS_OSPF_EXT2
)
590 buf
+= bsprintf(buf
, "/%d", rte
->u
.ospf
.metric2
);
591 buf
+= bsprintf(buf
, ")");
592 if ((rte
->attrs
->source
== RTS_OSPF_EXT1
|| rte
->attrs
->source
== RTS_OSPF_EXT2
) && rte
->u
.ospf
.tag
)
594 buf
+= bsprintf(buf
, " [%x]", rte
->u
.ospf
.tag
);
596 if (rte
->u
.ospf
.router_id
)
597 buf
+= bsprintf(buf
, " [%R]", rte
->u
.ospf
.router_id
);
601 ospf_get_attr(eattr
* a
, byte
* buf
, int buflen UNUSED
)
605 case EA_OSPF_METRIC1
:
606 bsprintf(buf
, "metric1");
608 case EA_OSPF_METRIC2
:
609 bsprintf(buf
, "metric2");
612 bsprintf(buf
, "tag: 0x%08x", a
->u
.data
);
614 case EA_OSPF_ROUTER_ID
:
615 bsprintf(buf
, "router_id");
623 ospf_area_reconfigure(struct ospf_area
*oa
, struct ospf_area_config
*nac
)
625 struct ospf_proto
*p
= oa
->po
;
626 struct ospf_area_config
*oac
= oa
->ac
;
627 struct ospf_iface
*ifa
, *ifx
;
630 oa
->options
= nac
->type
| ospf_opts(p
);
632 if (nac
->type
!= oac
->type
)
634 log(L_INFO
"%s: Restarting area %R", p
->p
.name
, oa
->areaid
);
636 /* Remove area interfaces, will be re-added later */
637 WALK_LIST_DELSAFE(ifa
, ifx
, p
->iface_list
)
640 ospf_iface_shutdown(ifa
);
641 ospf_iface_remove(ifa
);
644 /* Flush area LSAs */
645 ospf_flush_area(p
, oa
->areaid
);
648 /* Handle net_list */
649 fib_free(&oa
->net_fib
);
650 fib_free(&oa
->enet_fib
);
651 add_area_nets(oa
, nac
);
653 /* No need to handle stubnet_list */
656 ospf_notify_rt_lsa(oa
);
660 * ospf_reconfigure - reconfiguration hook
661 * @P: current instance of protocol (with old configuration)
662 * @c: new configuration requested by user
664 * This hook tries to be a little bit intelligent. Instance of OSPF
665 * will survive change of many constants like hello interval,
666 * password change, addition or deletion of some neighbor on
667 * nonbroadcast network, cost of interface, etc.
670 ospf_reconfigure(struct proto
*P
, struct proto_config
*CF
)
672 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
673 struct ospf_config
*old
= (struct ospf_config
*) (P
->cf
);
674 struct ospf_config
*new = (struct ospf_config
*) CF
;
675 struct ospf_area_config
*oac
, *nac
;
676 struct ospf_area
*oa
, *oax
;
677 struct ospf_iface
*ifa
, *ifx
;
678 struct ospf_iface_patt
*ip
;
680 if (proto_get_router_id(CF
) != p
->router_id
)
683 if (p
->ospf2
!= new->ospf2
)
686 if (p
->rfc1583
!= new->rfc1583
)
689 if (p
->instance_id
!= new->instance_id
)
692 if (old
->abr
!= new->abr
)
697 oac
= HEAD(old
->area_list
);
698 nac
= HEAD(new->area_list
);
700 if (oac
->type
!= nac
->type
)
704 if (old
->vpn_pe
!= new->vpn_pe
)
707 if ((p
->af_ext
!= new->af_ext
) || (p
->af_mc
!= new->af_mc
))
710 if (!proto_configure_channel(P
, &P
->main_channel
, proto_cf_main_channel(CF
)))
713 p
->stub_router
= new->stub_router
;
714 p
->merge_external
= new->merge_external
;
717 p
->gr_mode
= new->gr_mode
;
718 p
->gr_time
= new->gr_time
;
720 p
->disp_timer
->recurrent
= p
->tick S
;
721 tm_start(p
->disp_timer
, 10 MS
);
723 /* Mark all areas and ifaces */
724 WALK_LIST(oa
, p
->area_list
)
727 WALK_LIST(ifa
, p
->iface_list
)
730 /* Add and update areas */
731 WALK_LIST(nac
, new->area_list
)
733 oa
= ospf_find_area(p
, nac
->areaid
);
735 ospf_area_reconfigure(oa
, nac
);
737 ospf_area_add(p
, nac
);
740 /* Add and update interfaces */
741 ospf_reconfigure_ifaces(p
);
743 /* Add and update vlinks */
744 WALK_LIST(ip
, new->vlink_list
)
746 ifa
= ospf_find_vlink(p
, ip
->voa
, ip
->vid
);
748 ospf_iface_reconfigure(ifa
, ip
);
750 ospf_iface_new_vlink(p
, ip
);
753 /* Delete remaining ifaces and areas */
754 WALK_LIST_DELSAFE(ifa
, ifx
, p
->iface_list
)
757 ospf_iface_shutdown(ifa
);
758 ospf_iface_remove(ifa
);
761 WALK_LIST_DELSAFE(oa
, oax
, p
->area_list
)
763 ospf_area_remove(oa
);
765 ospf_schedule_rtcalc(p
);
772 ospf_sh_neigh(struct proto
*P
, char *iff
)
774 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
775 struct ospf_iface
*ifa
= NULL
;
776 struct ospf_neighbor
*n
;
778 if (p
->p
.proto_state
!= PS_UP
)
780 cli_msg(-1013, "%s: is not up", p
->p
.name
);
785 cli_msg(-1013, "%s:", p
->p
.name
);
786 cli_msg(-1013, "%-12s\t%3s\t%-15s\t%-5s\t%-10s %-12s", "Router ID", "Pri",
787 " State", "DTime", "Interface", "Router IP");
788 WALK_LIST(ifa
, p
->iface_list
)
789 if ((iff
== NULL
) || patmatch(iff
, ifa
->ifname
))
790 WALK_LIST(n
, ifa
->neigh_list
)
791 ospf_sh_neigh_info(n
);
796 ospf_sh(struct proto
*P
)
798 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
799 struct ospf_area
*oa
;
800 struct ospf_iface
*ifa
;
801 struct ospf_neighbor
*n
;
802 int ifano
, nno
, adjno
, firstfib
;
804 if (p
->p
.proto_state
!= PS_UP
)
806 cli_msg(-1014, "%s: is not up", p
->p
.name
);
811 cli_msg(-1014, "%s:", p
->p
.name
);
812 cli_msg(-1014, "RFC1583 compatibility: %s", (p
->rfc1583
? "enabled" : "disabled"));
813 cli_msg(-1014, "Stub router: %s", (p
->stub_router
? "Yes" : "No"));
814 cli_msg(-1014, "RT scheduler tick: %d", p
->tick
);
815 cli_msg(-1014, "Number of areas: %u", p
->areano
);
816 cli_msg(-1014, "Number of LSAs in DB:\t%u", p
->gr
->hash_entries
);
818 WALK_LIST(oa
, p
->area_list
)
820 cli_msg(-1014, "\tArea: %R (%u) %s", oa
->areaid
, oa
->areaid
,
821 oa
->areaid
== 0 ? "[BACKBONE]" : "");
825 WALK_LIST(ifa
, p
->iface_list
)
830 WALK_LIST(n
, ifa
->neigh_list
)
833 if (n
->state
== NEIGHBOR_FULL
)
839 cli_msg(-1014, "\t\tStub:\t%s", oa_is_stub(oa
) ? "Yes" : "No");
840 cli_msg(-1014, "\t\tNSSA:\t%s", oa_is_nssa(oa
) ? "Yes" : "No");
841 cli_msg(-1014, "\t\tTransit:\t%s", oa
->trcap
? "Yes" : "No");
844 cli_msg(-1014, "\t\tNSSA translation:\t%s%s", oa
->translate
? "Yes" : "No",
845 oa
->translate
== TRANS_WAIT
? " (run down)" : "");
846 cli_msg(-1014, "\t\tNumber of interfaces:\t%u", ifano
);
847 cli_msg(-1014, "\t\tNumber of neighbors:\t%u", nno
);
848 cli_msg(-1014, "\t\tNumber of adjacent neighbors:\t%u", adjno
);
851 FIB_WALK(&oa
->net_fib
, struct area_net
, anet
)
855 cli_msg(-1014, "\t\tArea networks:");
858 cli_msg(-1014, "\t\t\t%1N\t%s\t%s", anet
->fn
.addr
,
859 anet
->hidden
? "Hidden" : "Advertise", anet
->active
? "Active" : "");
864 FIB_WALK(&oa
->enet_fib
, struct area_net
, anet
)
868 cli_msg(-1014, "\t\tArea external networks:");
871 cli_msg(-1014, "\t\t\t%1N\t%s\t%s", anet
->fn
.addr
,
872 anet
->hidden
? "Hidden" : "Advertise", anet
->active
? "Active" : "");
881 ospf_sh_iface(struct proto
*P
, char *iff
)
883 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
884 struct ospf_iface
*ifa
= NULL
;
886 if (p
->p
.proto_state
!= PS_UP
)
888 cli_msg(-1015, "%s: is not up", p
->p
.name
);
893 cli_msg(-1015, "%s:", p
->p
.name
);
894 WALK_LIST(ifa
, p
->iface_list
)
895 if ((iff
== NULL
) || patmatch(iff
, ifa
->ifname
))
896 ospf_iface_info(ifa
);
900 /* lsa_compare_for_state() - Compare function for 'show ospf state'
902 * First we want to separate network-LSAs and other LSAs (because network-LSAs
903 * will be presented as network nodes and other LSAs together as router nodes)
904 * Network-LSAs are sorted according to network prefix, other LSAs are sorted
905 * according to originating router id (to get all LSA needed to represent one
906 * router node together). Then, according to LSA type, ID and age.
908 * For OSPFv3, we have to handle also Prefix-LSAs. We would like to put each
909 * immediately after the referenced LSA. We will make faked LSA based on ref_
913 static struct ospf_lsa_header
*
914 fake_lsa_from_prefix_lsa(struct ospf_lsa_header
*dst
, struct ospf_lsa_header
*src
,
915 struct ospf_lsa_prefix
*px
)
918 dst
->type_raw
= px
->ref_type
;
919 dst
->id
= px
->ref_id
;
920 dst
->rt
= px
->ref_rt
;
927 static int lsa_compare_ospf3
;
930 lsa_compare_for_state(const void *p1
, const void *p2
)
932 struct top_hash_entry
*he1
= * (struct top_hash_entry
**) p1
;
933 struct top_hash_entry
*he2
= * (struct top_hash_entry
**) p2
;
934 struct ospf_lsa_header
*lsa1
= &(he1
->lsa
);
935 struct ospf_lsa_header
*lsa2
= &(he2
->lsa
);
936 struct ospf_lsa_header lsatmp1
, lsatmp2
;
937 u16 lsa1_type
= he1
->lsa_type
;
938 u16 lsa2_type
= he2
->lsa_type
;
940 if (he1
->domain
< he2
->domain
)
942 if (he1
->domain
> he2
->domain
)
946 /* px1 or px2 assumes OSPFv3 */
947 int px1
= (lsa1_type
== LSA_T_PREFIX
);
948 int px2
= (lsa2_type
== LSA_T_PREFIX
);
952 lsa1
= fake_lsa_from_prefix_lsa(&lsatmp1
, lsa1
, he1
->lsa_body
);
953 lsa1_type
= lsa1
->type_raw
; /* FIXME: handle unknown ref_type */
958 lsa2
= fake_lsa_from_prefix_lsa(&lsatmp2
, lsa2
, he2
->lsa_body
);
959 lsa2_type
= lsa2
->type_raw
;
963 int nt1
= (lsa1_type
== LSA_T_NET
);
964 int nt2
= (lsa2_type
== LSA_T_NET
);
971 /* In OSPFv3, networks are named based on ID of DR */
972 if (lsa_compare_ospf3
)
974 if (lsa1
->rt
< lsa2
->rt
)
976 if (lsa1
->rt
> lsa2
->rt
)
980 /* For OSPFv2, this is IP of the network,
981 for OSPFv3, this is interface ID */
982 if (lsa1
->id
< lsa2
->id
)
984 if (lsa1
->id
> lsa2
->id
)
990 return lsa1
->sn
- lsa2
->sn
;
994 if (lsa1
->rt
< lsa2
->rt
)
996 if (lsa1
->rt
> lsa2
->rt
)
999 if (lsa1_type
< lsa2_type
)
1001 if (lsa1_type
> lsa2_type
)
1004 if (lsa1
->id
< lsa2
->id
)
1006 if (lsa1
->id
> lsa2
->id
)
1012 return lsa1
->sn
- lsa2
->sn
;
1017 ext_compare_for_state(const void *p1
, const void *p2
)
1019 struct top_hash_entry
* he1
= * (struct top_hash_entry
**) p1
;
1020 struct top_hash_entry
* he2
= * (struct top_hash_entry
**) p2
;
1021 struct ospf_lsa_header
*lsa1
= &(he1
->lsa
);
1022 struct ospf_lsa_header
*lsa2
= &(he2
->lsa
);
1024 if (lsa1
->rt
< lsa2
->rt
)
1026 if (lsa1
->rt
> lsa2
->rt
)
1029 if (lsa1
->id
< lsa2
->id
)
1031 if (lsa1
->id
> lsa2
->id
)
1034 return lsa1
->sn
- lsa2
->sn
;
1038 show_lsa_distance(struct top_hash_entry
*he
)
1040 if (he
->color
== INSPF
)
1041 cli_msg(-1016, "\t\tdistance %u", he
->dist
);
1043 cli_msg(-1016, "\t\tunreachable");
1047 show_lsa_router(struct ospf_proto
*p
, struct top_hash_entry
*he
, int verbose
)
1049 struct ospf_lsa_rt_walk rtl
;
1052 cli_msg(-1016, "\trouter %R", he
->lsa
.rt
);
1053 show_lsa_distance(he
);
1055 lsa_walk_rt_init(p
, he
, &rtl
);
1056 while (lsa_walk_rt(&rtl
))
1057 if (rtl
.type
== LSART_VLNK
)
1058 cli_msg(-1016, "\t\tvlink %R metric %u", rtl
.id
, rtl
.metric
);
1060 lsa_walk_rt_init(p
, he
, &rtl
);
1061 while (lsa_walk_rt(&rtl
))
1062 if (rtl
.type
== LSART_PTP
)
1063 cli_msg(-1016, "\t\trouter %R metric %u", rtl
.id
, rtl
.metric
);
1065 lsa_walk_rt_init(p
, he
, &rtl
);
1066 while (lsa_walk_rt(&rtl
))
1067 if (rtl
.type
== LSART_NET
)
1071 /* In OSPFv2, we try to find network-LSA to get prefix/pxlen */
1072 struct top_hash_entry
*net_he
= ospf_hash_find_net2(p
->gr
, he
->domain
, rtl
.id
);
1074 if (net_he
&& (net_he
->lsa
.age
< LSA_MAXAGE
))
1076 struct ospf_lsa_header
*net_lsa
= &(net_he
->lsa
);
1077 struct ospf_lsa_net
*net_ln
= net_he
->lsa_body
;
1079 cli_msg(-1016, "\t\tnetwork %I/%d metric %u",
1080 ipa_from_u32(net_lsa
->id
& net_ln
->optx
),
1081 u32_masklen(net_ln
->optx
), rtl
.metric
);
1084 cli_msg(-1016, "\t\tnetwork [%R] metric %u", rtl
.id
, rtl
.metric
);
1087 cli_msg(-1016, "\t\tnetwork [%R-%u] metric %u", rtl
.id
, rtl
.nif
, rtl
.metric
);
1090 if (ospf_is_v2(p
) && verbose
)
1092 lsa_walk_rt_init(p
, he
, &rtl
);
1093 while (lsa_walk_rt(&rtl
))
1094 if (rtl
.type
== LSART_STUB
)
1095 cli_msg(-1016, "\t\tstubnet %I/%d metric %u",
1096 ipa_from_u32(rtl
.id
), u32_masklen(rtl
.data
), rtl
.metric
);
1101 show_lsa_network(struct top_hash_entry
*he
, int ospf2
)
1103 struct ospf_lsa_header
*lsa
= &(he
->lsa
);
1104 struct ospf_lsa_net
*ln
= he
->lsa_body
;
1110 cli_msg(-1016, "\tnetwork %I/%d", ipa_from_u32(lsa
->id
& ln
->optx
), u32_masklen(ln
->optx
));
1111 cli_msg(-1016, "\t\tdr %R", lsa
->rt
);
1116 cli_msg(-1016, "\tnetwork [%R-%u]", lsa
->rt
, lsa
->id
);
1119 show_lsa_distance(he
);
1121 for (i
= 0; i
< lsa_net_count(lsa
); i
++)
1122 cli_msg(-1016, "\t\trouter %R", ln
->routers
[i
]);
1126 show_lsa_sum_net(struct top_hash_entry
*he
, int ospf2
, int af
)
1132 lsa_parse_sum_net(he
, ospf2
, af
, &net
, &pxopts
, &metric
);
1133 cli_msg(-1016, "\t\txnetwork %N metric %u", &net
, metric
);
1137 show_lsa_sum_rt(struct top_hash_entry
*he
, int ospf2
)
1143 lsa_parse_sum_rt(he
, ospf2
, &dst_rid
, &metric
, &options
);
1144 cli_msg(-1016, "\t\txrouter %R metric %u", dst_rid
, metric
);
1149 show_lsa_external(struct top_hash_entry
*he
, int ospf2
, int af
)
1151 struct ospf_lsa_ext_local rt
;
1152 char str_via
[IPA_MAX_TEXT_LENGTH
+ 8] = "";
1153 char str_tag
[16] = "";
1155 if (he
->lsa_type
== LSA_T_EXT
)
1156 he
->domain
= 0; /* Unmark the LSA */
1158 lsa_parse_ext(he
, ospf2
, af
, &rt
);
1161 bsprintf(str_via
, " via %I", rt
.fwaddr
);
1164 bsprintf(str_tag
, " tag %08x", rt
.tag
);
1166 cli_msg(-1016, "\t\t%s %N metric%s %u%s%s",
1167 (he
->lsa_type
== LSA_T_NSSA
) ? "nssa-ext" : "external",
1168 &rt
.net
, rt
.ebit
? "2" : "", rt
.metric
, str_via
, str_tag
);
1172 show_lsa_prefix(struct top_hash_entry
*he
, struct top_hash_entry
*cnode
, int af
)
1174 struct ospf_lsa_prefix
*px
= he
->lsa_body
;
1178 /* We check whether given prefix-LSA is related to the current node */
1179 if ((px
->ref_type
!= cnode
->lsa
.type_raw
) || (px
->ref_rt
!= cnode
->lsa
.rt
))
1182 if ((px
->ref_type
== LSA_T_RT
) && (px
->ref_id
!= 0))
1185 if ((px
->ref_type
== LSA_T_NET
) && (px
->ref_id
!= cnode
->lsa
.id
))
1189 for (i
= 0; i
< px
->pxcount
; i
++)
1195 buf
= ospf3_get_prefix(buf
, af
, &net
, &pxopts
, &metric
);
1197 if (px
->ref_type
== LSA_T_RT
)
1198 cli_msg(-1016, "\t\tstubnet %N metric %u", &net
, metric
);
1200 cli_msg(-1016, "\t\taddress %N", &net
);
1205 ospf_sh_state(struct proto
*P
, int verbose
, int reachable
)
1207 struct ospf_proto
*p
= (struct ospf_proto
*) P
;
1208 int ospf2
= ospf_is_v2(p
);
1209 int af
= ospf_get_af(p
);
1211 u32 last_area
= 0xFFFFFFFF;
1213 if (p
->p
.proto_state
!= PS_UP
)
1215 cli_msg(-1016, "%s: is not up", p
->p
.name
);
1220 /* We store interesting area-scoped LSAs in array hea and
1221 global-scoped (LSA_T_EXT) LSAs in array hex */
1223 uint num
= p
->gr
->hash_entries
;
1224 struct top_hash_entry
*hea
[num
];
1225 struct top_hash_entry
*hex
[verbose
? num
: 0];
1226 struct top_hash_entry
*he
;
1227 struct top_hash_entry
*cnode
= NULL
;
1230 WALK_SLIST(he
, p
->lsal
)
1234 if (he
->lsa
.age
== LSA_MAXAGE
)
1237 switch (he
->lsa_type
)
1254 he
->domain
= 1; /* Abuse domain field to mark the LSA */
1266 ASSERT(j1
<= num
&& jx
<= num
);
1268 lsa_compare_ospf3
= !ospf2
;
1269 qsort(hea
, j1
, sizeof(struct top_hash_entry
*), lsa_compare_for_state
);
1270 qsort(hex
, jx
, sizeof(struct top_hash_entry
*), ext_compare_for_state
);
1273 * This code is a bit tricky, we have a primary LSAs (router and
1274 * network) that are presented as a node, and secondary LSAs that
1275 * are presented as a part of a primary node. cnode represents an
1276 * currently opened node (whose header was presented). The LSAs are
1277 * sorted to get secondary LSAs just after related primary LSA (if
1278 * available). We present secondary LSAs only when related primary
1281 * AS-external LSAs are stored separately as they might be presented
1282 * several times (for each area when related ASBR is opened). When
1283 * the node is closed, related external routes are presented. We
1284 * also have to take into account that in OSPFv3, there might be
1285 * more router-LSAs and only the first should be considered as a
1286 * primary. This is handled by not closing old router-LSA when next
1287 * one is processed (which is not opened because there is already
1292 for (i
= 0; i
< j1
; i
++)
1296 /* If there is no opened node, we open the LSA (if appropriate) or skip to the next one */
1299 if (((he
->lsa_type
== LSA_T_RT
) || (he
->lsa_type
== LSA_T_NET
))
1300 && ((he
->color
== INSPF
) || !reachable
))
1304 if (he
->domain
!= last_area
)
1307 cli_msg(-1016, "area %R", he
->domain
);
1308 last_area
= he
->domain
;
1316 ASSERT(cnode
&& (he
->domain
== last_area
) && (he
->lsa
.rt
== cnode
->lsa
.rt
));
1318 switch (he
->lsa_type
)
1321 if (he
->lsa
.id
== cnode
->lsa
.id
)
1322 show_lsa_router(p
, he
, verbose
);
1326 show_lsa_network(he
, ospf2
);
1330 if (cnode
->lsa_type
== LSA_T_RT
)
1331 show_lsa_sum_net(he
, ospf2
, af
);
1335 if (cnode
->lsa_type
== LSA_T_RT
)
1336 show_lsa_sum_rt(he
, ospf2
);
1341 show_lsa_external(he
, ospf2
, af
);
1345 show_lsa_prefix(he
, cnode
, af
);
1349 /* In these cases, we close the current node */
1351 || (hea
[i
+1]->domain
!= last_area
)
1352 || (hea
[i
+1]->lsa
.rt
!= cnode
->lsa
.rt
)
1353 || (hea
[i
+1]->lsa_type
== LSA_T_NET
))
1355 while ((ix
< jx
) && (hex
[ix
]->lsa
.rt
< cnode
->lsa
.rt
))
1358 while ((ix
< jx
) && (hex
[ix
]->lsa
.rt
== cnode
->lsa
.rt
))
1359 show_lsa_external(hex
[ix
++], ospf2
, af
);
1366 u32 last_rt
= 0xFFFFFFFF;
1367 for (ix
= 0; ix
< jx
; ix
++)
1371 /* If it is still marked, we show it now. */
1376 if ((he
->color
!= INSPF
) && reachable
)
1382 cli_msg(-1016, "other ASBRs");
1386 if (he
->lsa
.rt
!= last_rt
)
1389 cli_msg(-1016, "\trouter %R", he
->lsa
.rt
);
1390 last_rt
= he
->lsa
.rt
;
1393 show_lsa_external(he
, ospf2
, af
);
1402 lsa_compare_for_lsadb(const void *p1
, const void *p2
)
1404 struct top_hash_entry
* he1
= * (struct top_hash_entry
**) p1
;
1405 struct top_hash_entry
* he2
= * (struct top_hash_entry
**) p2
;
1406 struct ospf_lsa_header
*lsa1
= &(he1
->lsa
);
1407 struct ospf_lsa_header
*lsa2
= &(he2
->lsa
);
1408 int sc1
= LSA_SCOPE(he1
->lsa_type
);
1409 int sc2
= LSA_SCOPE(he2
->lsa_type
);
1414 if (he1
->domain
!= he2
->domain
)
1415 return he1
->domain
- he2
->domain
;
1417 if (lsa1
->rt
!= lsa2
->rt
)
1418 return lsa1
->rt
- lsa2
->rt
;
1420 if (lsa1
->id
!= lsa2
->id
)
1421 return lsa1
->id
- lsa2
->id
;
1423 if (he1
->lsa_type
!= he2
->lsa_type
)
1424 return he1
->lsa_type
- he2
->lsa_type
;
1426 return lsa1
->sn
- lsa2
->sn
;
1430 ospf_sh_lsadb(struct lsadb_show_data
*ld
)
1432 struct ospf_proto
*p
= ld
->proto
;
1433 uint num
= p
->gr
->hash_entries
;
1435 int last_dscope
= -1;
1436 u32 last_domain
= 0;
1437 u16 type_mask
= ospf_is_v2(p
) ? 0x00ff : 0xffff; /* see lsa_etype() */
1439 if (p
->p
.proto_state
!= PS_UP
)
1441 cli_msg(-1017, "%s: is not up", p
->p
.name
);
1446 if (ld
->router
== SH_ROUTER_SELF
)
1447 ld
->router
= p
->router_id
;
1449 struct top_hash_entry
*hea
[num
];
1450 struct top_hash_entry
*he
;
1453 WALK_SLIST(he
, p
->lsal
)
1459 qsort(hea
, j
, sizeof(struct top_hash_entry
*), lsa_compare_for_lsadb
);
1461 for (i
= 0; i
< j
; i
++)
1463 struct ospf_lsa_header
*lsa
= &(hea
[i
]->lsa
);
1464 u16 lsa_type
= lsa
->type_raw
& type_mask
;
1465 u16 dscope
= LSA_SCOPE(hea
[i
]->lsa_type
);
1467 /* Hack: 1 is used for LSA_SCOPE_LINK, fixed by & 0xf000 */
1468 if (ld
->scope
&& (dscope
!= (ld
->scope
& 0xf000)))
1471 if ((ld
->scope
== LSA_SCOPE_AREA
) && (hea
[i
]->domain
!= ld
->area
))
1474 /* For user convenience ignore high nibble */
1475 if (ld
->type
&& ((lsa_type
& 0x0fff) != (ld
->type
& 0x0fff)))
1478 if (ld
->lsid
&& (lsa
->id
!= ld
->lsid
))
1481 if (ld
->router
&& (lsa
->rt
!= ld
->router
))
1484 if ((dscope
!= last_dscope
) || (hea
[i
]->domain
!= last_domain
))
1490 cli_msg(-1017, "Global");
1493 case LSA_SCOPE_AREA
:
1494 cli_msg(-1017, "Area %R", hea
[i
]->domain
);
1497 case LSA_SCOPE_LINK
:
1499 struct iface
*ifa
= if_find_by_index(hea
[i
]->domain
);
1500 cli_msg(-1017, "Link %s", (ifa
!= NULL
) ? ifa
->name
: "?");
1505 cli_msg(-1017," Type LS ID Router Sequence Age Checksum");
1507 last_dscope
= dscope
;
1508 last_domain
= hea
[i
]->domain
;
1511 cli_msg(-1017," %04x %-15R %-15R %08x %5u %04x",
1512 lsa_type
, lsa
->id
, lsa
->rt
, lsa
->sn
, lsa
->age
, lsa
->checksum
);
1518 struct protocol proto_ospf
= {
1520 .template = "ospf%d",
1521 .class = PROTOCOL_OSPF
,
1522 .preference
= DEF_PREF_OSPF
,
1523 .channel_mask
= NB_IP
,
1524 .proto_size
= sizeof(struct ospf_proto
),
1525 .config_size
= sizeof(struct ospf_config
),
1528 .start
= ospf_start
,
1529 .shutdown
= ospf_shutdown
,
1530 .reconfigure
= ospf_reconfigure
,
1531 .get_status
= ospf_get_status
,
1532 .get_attr
= ospf_get_attr
,
1533 .get_route_info
= ospf_get_route_info