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git.proxmox.com Git - mirror_frr.git/blob - ldpd/adjacency.c
4 * Copyright (c) 2013, 2015 Renato Westphal <renato@openbsd.org>
5 * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
6 * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org>
7 * Copyright (c) 2004, 2005, 2008 Esben Norby <norby@openbsd.org>
9 * Permission to use, copy, modify, and distribute this software for any
10 * purpose with or without fee is hereby granted, provided that the above
11 * copyright notice and this permission notice appear in all copies.
13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
28 static __inline
int adj_compare(const struct adj
*, const struct adj
*);
29 static int adj_itimer(struct thread
*);
30 static __inline
int tnbr_compare(const struct tnbr
*, const struct tnbr
*);
31 static void tnbr_del(struct ldpd_conf
*, struct tnbr
*);
32 static void tnbr_start(struct tnbr
*);
33 static void tnbr_stop(struct tnbr
*);
34 static int tnbr_hello_timer(struct thread
*);
35 static void tnbr_start_hello_timer(struct tnbr
*);
36 static void tnbr_stop_hello_timer(struct tnbr
*);
38 RB_GENERATE(global_adj_head
, adj
, global_entry
, adj_compare
)
39 RB_GENERATE(nbr_adj_head
, adj
, nbr_entry
, adj_compare
)
40 RB_GENERATE(ia_adj_head
, adj
, ia_entry
, adj_compare
)
41 RB_GENERATE(tnbr_head
, tnbr
, entry
, tnbr_compare
)
44 adj_compare(const struct adj
*a
, const struct adj
*b
)
46 if (adj_get_af(a
) < adj_get_af(b
))
48 if (adj_get_af(a
) > adj_get_af(b
))
51 if (ntohl(a
->lsr_id
.s_addr
) < ntohl(b
->lsr_id
.s_addr
))
53 if (ntohl(a
->lsr_id
.s_addr
) > ntohl(b
->lsr_id
.s_addr
))
56 if (a
->source
.type
< b
->source
.type
)
58 if (a
->source
.type
> b
->source
.type
)
61 switch (a
->source
.type
) {
63 if (if_cmp_name_func(a
->source
.link
.ia
->iface
->name
,
64 b
->source
.link
.ia
->iface
->name
) < 0)
66 if (if_cmp_name_func(a
->source
.link
.ia
->iface
->name
,
67 b
->source
.link
.ia
->iface
->name
) > 0)
69 return (ldp_addrcmp(a
->source
.link
.ia
->af
,
70 &a
->source
.link
.src_addr
, &b
->source
.link
.src_addr
));
72 return (ldp_addrcmp(a
->source
.target
->af
,
73 &a
->source
.target
->addr
, &b
->source
.target
->addr
));
75 fatalx("adj_compare: unknown hello type");
82 adj_new(struct in_addr lsr_id
, struct hello_source
*source
,
83 union ldpd_addr
*addr
)
87 log_debug("%s: lsr-id %pI4, %s", __func__
, &lsr_id
,
88 log_hello_src(source
));
90 if ((adj
= calloc(1, sizeof(*adj
))) == NULL
)
95 adj
->source
= *source
;
96 adj
->trans_addr
= *addr
;
98 RB_INSERT(global_adj_head
, &global
.adj_tree
, adj
);
100 switch (source
->type
) {
102 RB_INSERT(ia_adj_head
, &source
->link
.ia
->adj_tree
, adj
);
105 source
->target
->adj
= adj
;
113 adj_del(struct adj
*adj
, uint32_t notif_status
)
115 struct nbr
*nbr
= adj
->nbr
;
117 log_debug("%s: lsr-id %pI4, %s (%s)", __func__
, &adj
->lsr_id
,
118 log_hello_src(&adj
->source
), af_name(adj_get_af(adj
)));
120 adj_stop_itimer(adj
);
122 RB_REMOVE(global_adj_head
, &global
.adj_tree
, adj
);
124 RB_REMOVE(nbr_adj_head
, &nbr
->adj_tree
, adj
);
125 switch (adj
->source
.type
) {
127 RB_REMOVE(ia_adj_head
, &adj
->source
.link
.ia
->adj_tree
, adj
);
130 ldp_sync_fsm_adj_event(adj
, LDP_SYNC_EVT_ADJ_DEL
);
133 adj
->source
.target
->adj
= NULL
;
140 * If the neighbor still exists but none of its remaining
141 * adjacencies (if any) are from the preferred address-family,
144 if (nbr
&& nbr_adj_count(nbr
, nbr
->af
) == 0) {
145 session_shutdown(nbr
, notif_status
, 0, 0);
151 adj_find(struct in_addr lsr_id
, struct hello_source
*source
)
155 adj
.source
= *source
;
156 return (RB_FIND(global_adj_head
, &global
.adj_tree
, &adj
));
160 adj_get_af(const struct adj
*adj
)
162 switch (adj
->source
.type
) {
164 return (adj
->source
.link
.ia
->af
);
166 return (adj
->source
.target
->af
);
168 fatalx("adj_get_af: unknown hello type");
172 /* adjacency timers */
176 adj_itimer(struct thread
*thread
)
178 struct adj
*adj
= THREAD_ARG(thread
);
180 adj
->inactivity_timer
= NULL
;
182 log_debug("%s: lsr-id %pI4", __func__
, &adj
->lsr_id
);
184 if (adj
->source
.type
== HELLO_TARGETED
) {
185 if (!(adj
->source
.target
->flags
& F_TNBR_CONFIGURED
) &&
186 adj
->source
.target
->pw_count
== 0 &&
187 adj
->source
.target
->rlfa_count
== 0) {
188 /* remove dynamic targeted neighbor */
189 tnbr_del(leconf
, adj
->source
.target
);
194 adj_del(adj
, S_HOLDTIME_EXP
);
200 adj_start_itimer(struct adj
*adj
)
202 thread_cancel(&adj
->inactivity_timer
);
203 adj
->inactivity_timer
= NULL
;
204 thread_add_timer(master
, adj_itimer
, adj
, adj
->holdtime
,
205 &adj
->inactivity_timer
);
209 adj_stop_itimer(struct adj
*adj
)
211 thread_cancel(&adj
->inactivity_timer
);
214 /* targeted neighbors */
217 tnbr_compare(const struct tnbr
*a
, const struct tnbr
*b
)
224 return (ldp_addrcmp(a
->af
, &a
->addr
, &b
->addr
));
228 tnbr_new(int af
, union ldpd_addr
*addr
)
232 if ((tnbr
= calloc(1, sizeof(*tnbr
))) == NULL
)
237 tnbr
->state
= TNBR_STA_DOWN
;
243 tnbr_del(struct ldpd_conf
*xconf
, struct tnbr
*tnbr
)
246 RB_REMOVE(tnbr_head
, &xconf
->tnbr_tree
, tnbr
);
251 tnbr_find(struct ldpd_conf
*xconf
, int af
, union ldpd_addr
*addr
)
256 return (RB_FIND(tnbr_head
, &xconf
->tnbr_tree
, &tnbr
));
260 tnbr_check(struct ldpd_conf
*xconf
, struct tnbr
*tnbr
)
262 if (!(tnbr
->flags
& (F_TNBR_CONFIGURED
|F_TNBR_DYNAMIC
)) &&
263 tnbr
->pw_count
== 0 && tnbr
->rlfa_count
== 0) {
264 tnbr_del(xconf
, tnbr
);
272 tnbr_start(struct tnbr
*tnbr
)
274 send_hello(HELLO_TARGETED
, NULL
, tnbr
);
275 tnbr_start_hello_timer(tnbr
);
276 tnbr
->state
= TNBR_STA_ACTIVE
;
280 tnbr_stop(struct tnbr
*tnbr
)
282 tnbr_stop_hello_timer(tnbr
);
284 adj_del(tnbr
->adj
, S_SHUTDOWN
);
285 tnbr
->state
= TNBR_STA_DOWN
;
289 tnbr_update(struct tnbr
*tnbr
)
291 int socket_ok
, rtr_id_ok
;
293 if ((ldp_af_global_get(&global
, tnbr
->af
))->ldp_edisc_socket
!= -1)
298 if (ldp_rtr_id_get(leconf
) != INADDR_ANY
)
303 if (tnbr
->state
== TNBR_STA_DOWN
) {
304 if (!socket_ok
|| !rtr_id_ok
)
308 } else if (tnbr
->state
== TNBR_STA_ACTIVE
) {
309 if (socket_ok
&& rtr_id_ok
)
317 tnbr_update_all(int af
)
321 /* update targeted neighbors */
322 RB_FOREACH(tnbr
, tnbr_head
, &leconf
->tnbr_tree
)
323 if (tnbr
->af
== af
|| af
== AF_UNSPEC
)
328 tnbr_get_hello_holdtime(struct tnbr
*tnbr
)
330 if ((ldp_af_conf_get(leconf
, tnbr
->af
))->thello_holdtime
!= 0)
331 return ((ldp_af_conf_get(leconf
, tnbr
->af
))->thello_holdtime
);
333 return (leconf
->thello_holdtime
);
337 tnbr_get_hello_interval(struct tnbr
*tnbr
)
339 if ((ldp_af_conf_get(leconf
, tnbr
->af
))->thello_interval
!= 0)
340 return ((ldp_af_conf_get(leconf
, tnbr
->af
))->thello_interval
);
342 return (leconf
->thello_interval
);
345 /* target neighbors timers */
349 tnbr_hello_timer(struct thread
*thread
)
351 struct tnbr
*tnbr
= THREAD_ARG(thread
);
353 tnbr
->hello_timer
= NULL
;
354 send_hello(HELLO_TARGETED
, NULL
, tnbr
);
355 tnbr_start_hello_timer(tnbr
);
361 tnbr_start_hello_timer(struct tnbr
*tnbr
)
363 thread_cancel(&tnbr
->hello_timer
);
364 tnbr
->hello_timer
= NULL
;
365 thread_add_timer(master
, tnbr_hello_timer
, tnbr
, tnbr_get_hello_interval(tnbr
),
370 tnbr_stop_hello_timer(struct tnbr
*tnbr
)
372 thread_cancel(&tnbr
->hello_timer
);
376 adj_to_ctl(struct adj
*adj
)
378 static struct ctl_adj actl
;
380 actl
.af
= adj_get_af(adj
);
381 actl
.id
= adj
->lsr_id
;
382 actl
.type
= adj
->source
.type
;
383 switch (adj
->source
.type
) {
385 memcpy(actl
.ifname
, adj
->source
.link
.ia
->iface
->name
,
386 sizeof(actl
.ifname
));
387 actl
.src_addr
= adj
->source
.link
.src_addr
;
390 actl
.src_addr
= adj
->source
.target
->addr
;
393 actl
.holdtime
= adj
->holdtime
;
394 actl
.holdtime_remaining
=
395 thread_timer_remain_second(adj
->inactivity_timer
);
396 actl
.trans_addr
= adj
->trans_addr
;
397 actl
.ds_tlv
= adj
->ds_tlv
;