4 * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org>
5 * Copyright (c) 2004, 2005 Claudio Jeker <claudio@openbsd.org>
6 * Copyright (c) 2004 Esben Norby <norby@openbsd.org>
7 * Copyright (c) 2003, 2004 Henning Brauer <henning@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.
29 #include "ldp_debug.h"
37 #include <lib/linklist.h>
43 static void lde_shutdown(void);
44 static int lde_dispatch_imsg(struct thread
*);
45 static int lde_dispatch_parent(struct thread
*);
46 static __inline
int lde_nbr_compare(const struct lde_nbr
*,
47 const struct lde_nbr
*);
48 static struct lde_nbr
*lde_nbr_new(uint32_t, struct lde_nbr
*);
49 static void lde_nbr_del(struct lde_nbr
*);
50 static struct lde_nbr
*lde_nbr_find(uint32_t);
51 static void lde_nbr_clear(void);
52 static void lde_nbr_addr_update(struct lde_nbr
*,
53 struct lde_addr
*, int);
54 static __inline
int lde_map_compare(const struct lde_map
*,
55 const struct lde_map
*);
56 static void lde_map_free(void *);
57 static int lde_address_add(struct lde_nbr
*, struct lde_addr
*);
58 static int lde_address_del(struct lde_nbr
*, struct lde_addr
*);
59 static void lde_address_list_free(struct lde_nbr
*);
60 static void zclient_sync_init(void);
61 static void lde_label_list_init(void);
62 static int lde_get_label_chunk(void);
63 static void on_get_label_chunk_response(uint32_t start
, uint32_t end
);
64 static uint32_t lde_get_next_label(void);
65 static bool lde_fec_connected(const struct fec_node
*);
66 static bool lde_fec_outside_mpls_network(const struct fec_node
*);
67 static void lde_check_filter_af(int, struct ldpd_af_conf
*,
70 RB_GENERATE(nbr_tree
, lde_nbr
, entry
, lde_nbr_compare
)
71 RB_GENERATE(lde_map_head
, lde_map
, entry
, lde_map_compare
)
73 struct ldpd_conf
*ldeconf
;
74 struct nbr_tree lde_nbrs
= RB_INITIALIZER(&lde_nbrs
);
76 static struct imsgev
*iev_ldpe
;
77 static struct imsgev iev_main_sync_data
;
78 static struct imsgev
*iev_main
, *iev_main_sync
;
81 static zebra_capabilities_t _caps_p
[] =
86 static struct zebra_privs_t lde_privs
=
88 #if defined(VTY_GROUP)
89 .vty_group
= VTY_GROUP
,
92 .cap_num_p
= array_size(_caps_p
),
96 /* List of chunks of labels externally assigned by Zebra */
97 static struct list
*label_chunk_list
;
98 static struct listnode
*current_label_chunk
;
100 /* Synchronous zclient to request labels */
101 static struct zclient
*zclient_sync
;
103 /* SIGINT / SIGTERM handler. */
110 static struct quagga_signal_t lde_signals
[] =
126 /* label decision engine */
130 struct thread thread
;
132 #ifdef HAVE_SETPROCTITLE
133 setproctitle("label decision engine");
135 ldpd_process
= PROC_LDE_ENGINE
;
136 log_procname
= log_procnames
[PROC_LDE_ENGINE
];
138 master
= thread_master_create(NULL
);
140 /* setup signal handler */
141 signal_init(master
, array_size(lde_signals
), lde_signals
);
143 /* setup pipes and event handlers to the parent process */
144 if ((iev_main
= calloc(1, sizeof(struct imsgev
))) == NULL
)
146 imsg_init(&iev_main
->ibuf
, LDPD_FD_ASYNC
);
147 iev_main
->handler_read
= lde_dispatch_parent
;
148 iev_main
->ev_read
= NULL
;
149 thread_add_read(master
, iev_main
->handler_read
, iev_main
, iev_main
->ibuf
.fd
,
151 iev_main
->handler_write
= ldp_write_handler
;
153 memset(&iev_main_sync_data
, 0, sizeof(iev_main_sync_data
));
154 iev_main_sync
= &iev_main_sync_data
;
155 imsg_init(&iev_main_sync
->ibuf
, LDPD_FD_SYNC
);
157 /* create base configuration */
158 ldeconf
= config_new_empty();
160 /* Fetch next active thread. */
161 while (thread_fetch(master
, &thread
))
162 thread_call(&thread
);
166 lde_init(struct ldpd_init
*init
)
168 /* drop privileges */
169 lde_privs
.user
= init
->user
;
170 lde_privs
.group
= init
->group
;
171 zprivs_preinit(&lde_privs
);
172 zprivs_init(&lde_privs
);
174 /* start the LIB garbage collector */
175 lde_gc_start_timer();
177 /* Init synchronous zclient and label list */
178 frr_zclient_addr(&zclient_addr
, &zclient_addr_len
,
179 init
->zclient_serv_path
);
188 msgbuf_clear(&iev_ldpe
->ibuf
.w
);
189 close(iev_ldpe
->ibuf
.fd
);
190 iev_ldpe
->ibuf
.fd
= -1;
192 msgbuf_clear(&iev_main
->ibuf
.w
);
193 close(iev_main
->ibuf
.fd
);
194 iev_main
->ibuf
.fd
= -1;
195 msgbuf_clear(&iev_main_sync
->ibuf
.w
);
196 close(iev_main_sync
->ibuf
.fd
);
197 iev_main_sync
->ibuf
.fd
= -1;
203 config_clear(ldeconf
);
209 log_info("label decision engine exiting");
217 lde_imsg_compose_parent(int type
, pid_t pid
, void *data
, uint16_t datalen
)
219 if (iev_main
->ibuf
.fd
== -1)
221 return (imsg_compose_event(iev_main
, type
, 0, pid
, -1, data
, datalen
));
225 lde_imsg_compose_parent_sync(int type
, pid_t pid
, void *data
, uint16_t datalen
)
227 if (iev_main_sync
->ibuf
.fd
== -1)
229 imsg_compose_event(iev_main_sync
, type
, 0, pid
, -1, data
, datalen
);
230 imsg_flush(&iev_main_sync
->ibuf
);
234 lde_imsg_compose_ldpe(int type
, uint32_t peerid
, pid_t pid
, void *data
,
237 if (iev_ldpe
->ibuf
.fd
== -1)
239 return (imsg_compose_event(iev_ldpe
, type
, peerid
, pid
,
245 lde_dispatch_imsg(struct thread
*thread
)
247 struct imsgev
*iev
= THREAD_ARG(thread
);
248 struct imsgbuf
*ibuf
= &iev
->ibuf
;
252 struct lde_addr
*lde_addr
;
253 struct notify_msg
*nm
;
259 if ((n
= imsg_read(ibuf
)) == -1 && errno
!= EAGAIN
)
260 fatal("imsg_read error");
261 if (n
== 0) /* connection closed */
265 if ((n
= imsg_get(ibuf
, &imsg
)) == -1)
266 fatal("lde_dispatch_imsg: imsg_get error");
270 switch (imsg
.hdr
.type
) {
271 case IMSG_LABEL_MAPPING_FULL
:
272 ln
= lde_nbr_find(imsg
.hdr
.peerid
);
274 log_debug("%s: cannot find lde neighbor",
281 case IMSG_LABEL_MAPPING
:
282 case IMSG_LABEL_REQUEST
:
283 case IMSG_LABEL_RELEASE
:
284 case IMSG_LABEL_WITHDRAW
:
285 case IMSG_LABEL_ABORT
:
286 if (imsg
.hdr
.len
- IMSG_HEADER_SIZE
!=
288 fatalx("lde_dispatch_imsg: wrong imsg len");
291 ln
= lde_nbr_find(imsg
.hdr
.peerid
);
293 log_debug("%s: cannot find lde neighbor",
298 switch (imsg
.hdr
.type
) {
299 case IMSG_LABEL_MAPPING
:
300 lde_check_mapping(map
, ln
, 1);
302 case IMSG_LABEL_REQUEST
:
303 lde_check_request(map
, ln
);
305 case IMSG_LABEL_RELEASE
:
306 lde_check_release(map
, ln
);
308 case IMSG_LABEL_WITHDRAW
:
309 lde_check_withdraw(map
, ln
);
311 case IMSG_LABEL_ABORT
:
316 case IMSG_ADDRESS_ADD
:
317 if (imsg
.hdr
.len
- IMSG_HEADER_SIZE
!=
318 sizeof(struct lde_addr
))
319 fatalx("lde_dispatch_imsg: wrong imsg len");
320 lde_addr
= imsg
.data
;
322 ln
= lde_nbr_find(imsg
.hdr
.peerid
);
324 log_debug("%s: cannot find lde neighbor",
328 if (lde_address_add(ln
, lde_addr
) < 0) {
329 log_debug("%s: cannot add address %s, it already exists", __func__
,
330 log_addr(lde_addr
->af
, &lde_addr
->addr
));
333 case IMSG_ADDRESS_DEL
:
334 if (imsg
.hdr
.len
- IMSG_HEADER_SIZE
!=
335 sizeof(struct lde_addr
))
336 fatalx("lde_dispatch_imsg: wrong imsg len");
337 lde_addr
= imsg
.data
;
339 ln
= lde_nbr_find(imsg
.hdr
.peerid
);
341 log_debug("%s: cannot find lde neighbor",
345 if (lde_address_del(ln
, lde_addr
) < 0) {
346 log_debug("%s: cannot delete address %s, it does not exist", __func__
,
347 log_addr(lde_addr
->af
, &lde_addr
->addr
));
350 case IMSG_NOTIFICATION
:
351 if (imsg
.hdr
.len
- IMSG_HEADER_SIZE
!=
352 sizeof(struct notify_msg
))
353 fatalx("lde_dispatch_imsg: wrong imsg len");
356 ln
= lde_nbr_find(imsg
.hdr
.peerid
);
358 log_debug("%s: cannot find lde neighbor",
363 switch (nm
->status_code
) {
365 l2vpn_recv_pw_status(ln
, nm
);
369 * Do nothing for now. Should be useful in
370 * the future when we implement LDP-IGP
371 * Synchronization (RFC 5443) and Graceful
372 * Restart (RFC 3478).
378 case IMSG_NEIGHBOR_UP
:
379 if (imsg
.hdr
.len
- IMSG_HEADER_SIZE
!=
380 sizeof(struct lde_nbr
))
381 fatalx("lde_dispatch_imsg: wrong imsg len");
383 if (lde_nbr_find(imsg
.hdr
.peerid
))
384 fatalx("lde_dispatch_imsg: neighbor already exists");
385 lde_nbr_new(imsg
.hdr
.peerid
, imsg
.data
);
387 case IMSG_NEIGHBOR_DOWN
:
388 lde_nbr_del(lde_nbr_find(imsg
.hdr
.peerid
));
390 case IMSG_CTL_SHOW_LIB
:
391 rt_dump(imsg
.hdr
.pid
);
393 lde_imsg_compose_ldpe(IMSG_CTL_END
, 0,
394 imsg
.hdr
.pid
, NULL
, 0);
396 case IMSG_CTL_SHOW_L2VPN_PW
:
397 l2vpn_pw_ctl(imsg
.hdr
.pid
);
399 lde_imsg_compose_ldpe(IMSG_CTL_END
, 0,
400 imsg
.hdr
.pid
, NULL
, 0);
402 case IMSG_CTL_SHOW_L2VPN_BINDING
:
403 l2vpn_binding_ctl(imsg
.hdr
.pid
);
405 lde_imsg_compose_ldpe(IMSG_CTL_END
, 0,
406 imsg
.hdr
.pid
, NULL
, 0);
409 log_debug("%s: unexpected imsg %d", __func__
,
418 /* this pipe is dead, so remove the event handlers and exit */
419 thread_cancel(&iev
->ev_read
);
420 thread_cancel(&iev
->ev_write
);
429 lde_dispatch_parent(struct thread
*thread
)
431 static struct ldpd_conf
*nconf
;
432 struct iface
*iface
, *niface
;
434 struct nbr_params
*nnbrp
;
435 static struct l2vpn
*l2vpn
, *nl2vpn
;
436 struct l2vpn_if
*lif
, *nlif
;
437 struct l2vpn_pw
*pw
, *npw
;
442 struct imsgev
*iev
= THREAD_ARG(thread
);
443 struct imsgbuf
*ibuf
= &iev
->ibuf
;
447 struct ldp_access
*laccess
;
448 struct ldp_rlfa_node
*rnode
, *rntmp
;
449 struct ldp_rlfa_client
*rclient
;
450 struct zapi_rlfa_request
*rlfa_req
;
451 struct zapi_rlfa_igp
*rlfa_igp
;
455 if ((n
= imsg_read(ibuf
)) == -1 && errno
!= EAGAIN
)
456 fatal("imsg_read error");
457 if (n
== 0) /* connection closed */
461 if ((n
= imsg_get(ibuf
, &imsg
)) == -1)
462 fatal("lde_dispatch_parent: imsg_get error");
466 switch (imsg
.hdr
.type
) {
468 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
470 fatalx("IFSTATUS imsg with wrong len");
473 iface
= if_lookup_name(ldeconf
, kif
->ifname
);
475 if_update_info(iface
, kif
);
477 /* if up see if any labels need to be updated */
479 lde_route_update(iface
, AF_UNSPEC
);
483 RB_FOREACH(l2vpn
, l2vpn_head
, &ldeconf
->l2vpn_tree
) {
484 lif
= l2vpn_if_find(l2vpn
, kif
->ifname
);
486 l2vpn_if_update_info(lif
, kif
);
489 pw
= l2vpn_pw_find(l2vpn
, kif
->ifname
);
491 l2vpn_pw_update_info(pw
, kif
);
497 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
498 sizeof(struct zapi_pw_status
))
499 fatalx("PW_UPDATE imsg with wrong len");
501 if (l2vpn_pw_status_update(imsg
.data
) != 0)
502 log_warnx("%s: error updating PW status",
505 case IMSG_NETWORK_ADD
:
506 case IMSG_NETWORK_UPDATE
:
507 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
508 sizeof(struct kroute
)) {
509 log_warnx("%s: wrong imsg len", __func__
);
516 fec
.type
= FEC_TYPE_IPV4
;
517 fec
.u
.ipv4
.prefix
= kr
->prefix
.v4
;
518 fec
.u
.ipv4
.prefixlen
= kr
->prefixlen
;
521 fec
.type
= FEC_TYPE_IPV6
;
522 fec
.u
.ipv6
.prefix
= kr
->prefix
.v6
;
523 fec
.u
.ipv6
.prefixlen
= kr
->prefixlen
;
526 fatalx("lde_dispatch_parent: unknown af");
529 switch (imsg
.hdr
.type
) {
530 case IMSG_NETWORK_ADD
:
531 lde_kernel_insert(&fec
, kr
->af
, &kr
->nexthop
,
532 kr
->ifindex
, kr
->route_type
,
534 kr
->flags
& F_CONNECTED
, NULL
);
536 case IMSG_NETWORK_UPDATE
:
537 lde_kernel_update(&fec
);
541 case IMSG_SOCKET_IPC
:
543 log_warnx("%s: received unexpected imsg fd to ldpe", __func__
);
546 if ((fd
= imsg
.fd
) == -1) {
547 log_warnx("%s: expected to receive imsg fd to ldpe but didn't receive any", __func__
);
551 if ((iev_ldpe
= malloc(sizeof(struct imsgev
))) == NULL
)
553 imsg_init(&iev_ldpe
->ibuf
, fd
);
554 iev_ldpe
->handler_read
= lde_dispatch_imsg
;
555 iev_ldpe
->ev_read
= NULL
;
556 thread_add_read(master
, iev_ldpe
->handler_read
, iev_ldpe
, iev_ldpe
->ibuf
.fd
,
558 iev_ldpe
->handler_write
= ldp_write_handler
;
559 iev_ldpe
->ev_write
= NULL
;
562 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
563 sizeof(struct ldpd_init
))
564 fatalx("INIT imsg with wrong len");
566 memcpy(&init
, imsg
.data
, sizeof(init
));
569 case IMSG_RECONF_CONF
:
570 if ((nconf
= malloc(sizeof(struct ldpd_conf
))) ==
573 memcpy(nconf
, imsg
.data
, sizeof(struct ldpd_conf
));
575 RB_INIT(iface_head
, &nconf
->iface_tree
);
576 RB_INIT(tnbr_head
, &nconf
->tnbr_tree
);
577 RB_INIT(nbrp_head
, &nconf
->nbrp_tree
);
578 RB_INIT(l2vpn_head
, &nconf
->l2vpn_tree
);
580 case IMSG_RECONF_IFACE
:
581 if ((niface
= malloc(sizeof(struct iface
))) == NULL
)
583 memcpy(niface
, imsg
.data
, sizeof(struct iface
));
585 RB_INSERT(iface_head
, &nconf
->iface_tree
, niface
);
587 case IMSG_RECONF_TNBR
:
588 if ((ntnbr
= malloc(sizeof(struct tnbr
))) == NULL
)
590 memcpy(ntnbr
, imsg
.data
, sizeof(struct tnbr
));
592 RB_INSERT(tnbr_head
, &nconf
->tnbr_tree
, ntnbr
);
594 case IMSG_RECONF_NBRP
:
595 if ((nnbrp
= malloc(sizeof(struct nbr_params
))) == NULL
)
597 memcpy(nnbrp
, imsg
.data
, sizeof(struct nbr_params
));
599 RB_INSERT(nbrp_head
, &nconf
->nbrp_tree
, nnbrp
);
601 case IMSG_RECONF_L2VPN
:
602 if ((nl2vpn
= malloc(sizeof(struct l2vpn
))) == NULL
)
604 memcpy(nl2vpn
, imsg
.data
, sizeof(struct l2vpn
));
606 RB_INIT(l2vpn_if_head
, &nl2vpn
->if_tree
);
607 RB_INIT(l2vpn_pw_head
, &nl2vpn
->pw_tree
);
608 RB_INIT(l2vpn_pw_head
, &nl2vpn
->pw_inactive_tree
);
610 RB_INSERT(l2vpn_head
, &nconf
->l2vpn_tree
, nl2vpn
);
612 case IMSG_RECONF_L2VPN_IF
:
613 if ((nlif
= malloc(sizeof(struct l2vpn_if
))) == NULL
)
615 memcpy(nlif
, imsg
.data
, sizeof(struct l2vpn_if
));
617 RB_INSERT(l2vpn_if_head
, &nl2vpn
->if_tree
, nlif
);
619 case IMSG_RECONF_L2VPN_PW
:
620 if ((npw
= malloc(sizeof(struct l2vpn_pw
))) == NULL
)
622 memcpy(npw
, imsg
.data
, sizeof(struct l2vpn_pw
));
624 RB_INSERT(l2vpn_pw_head
, &nl2vpn
->pw_tree
, npw
);
626 case IMSG_RECONF_L2VPN_IPW
:
627 if ((npw
= malloc(sizeof(struct l2vpn_pw
))) == NULL
)
629 memcpy(npw
, imsg
.data
, sizeof(struct l2vpn_pw
));
631 RB_INSERT(l2vpn_pw_head
, &nl2vpn
->pw_inactive_tree
, npw
);
633 case IMSG_RECONF_END
:
634 merge_config(ldeconf
, nconf
);
635 ldp_clear_config(nconf
);
638 case IMSG_DEBUG_UPDATE
:
639 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
641 log_warnx("%s: wrong imsg len", __func__
);
644 memcpy(&ldp_debug
, imsg
.data
, sizeof(ldp_debug
));
646 case IMSG_FILTER_UPDATE
:
647 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
648 sizeof(struct ldp_access
)) {
649 log_warnx("%s: wrong imsg len", __func__
);
653 lde_check_filter_af(AF_INET
, &ldeconf
->ipv4
,
655 lde_check_filter_af(AF_INET6
, &ldeconf
->ipv6
,
659 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
660 sizeof(struct zapi_rlfa_request
)) {
661 log_warnx("%s: wrong imsg len", __func__
);
664 rlfa_req
= imsg
.data
;
665 rnode
= rlfa_node_find(&rlfa_req
->destination
,
666 rlfa_req
->pq_address
);
668 rnode
= rlfa_node_new(&rlfa_req
->destination
,
669 rlfa_req
->pq_address
);
670 rclient
= rlfa_client_find(rnode
, &rlfa_req
->igp
);
672 /* RLFA already registered - do nothing */
674 rclient
= rlfa_client_new(rnode
, &rlfa_req
->igp
);
675 lde_rlfa_check(rclient
);
677 case IMSG_RLFA_UNREG_ALL
:
678 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
679 sizeof(struct zapi_rlfa_igp
)) {
680 log_warnx("%s: wrong imsg len", __func__
);
683 rlfa_igp
= imsg
.data
;
685 RB_FOREACH_SAFE (rnode
, ldp_rlfa_node_head
,
686 &rlfa_node_tree
, rntmp
) {
687 rclient
= rlfa_client_find(rnode
, rlfa_igp
);
691 rlfa_client_del(rclient
);
695 log_debug("%s: unexpected imsg %d", __func__
,
704 /* this pipe is dead, so remove the event handlers and exit */
705 thread_cancel(&iev
->ev_read
);
706 thread_cancel(&iev
->ev_write
);
714 lde_acl_check(char *acl_name
, int af
, union ldpd_addr
*addr
, uint8_t prefixlen
)
716 return ldp_acl_request(iev_main_sync
, acl_name
, af
, addr
, prefixlen
);
719 static bool lde_fec_connected(const struct fec_node
*fn
)
723 LIST_FOREACH(fnh
, &fn
->nexthops
, entry
)
724 if (fnh
->flags
& F_FEC_NH_CONNECTED
)
730 static bool lde_fec_outside_mpls_network(const struct fec_node
*fn
)
734 LIST_FOREACH(fnh
, &fn
->nexthops
, entry
)
735 if (!(fnh
->flags
& F_FEC_NH_NO_LDP
))
742 lde_update_label(struct fec_node
*fn
)
745 /* should we allocate a label for this fec? */
746 switch (fn
->fec
.type
) {
748 if ((ldeconf
->ipv4
.flags
& F_LDPD_AF_ALLOCHOSTONLY
) &&
749 fn
->fec
.u
.ipv4
.prefixlen
!= 32)
751 if (lde_acl_check(ldeconf
->ipv4
.acl_label_allocate_for
,
752 AF_INET
, (union ldpd_addr
*)&fn
->fec
.u
.ipv4
.prefix
,
753 fn
->fec
.u
.ipv4
.prefixlen
) != FILTER_PERMIT
)
757 if ((ldeconf
->ipv6
.flags
& F_LDPD_AF_ALLOCHOSTONLY
) &&
758 fn
->fec
.u
.ipv6
.prefixlen
!= 128)
760 if (lde_acl_check(ldeconf
->ipv6
.acl_label_allocate_for
,
761 AF_INET6
, (union ldpd_addr
*)&fn
->fec
.u
.ipv6
.prefix
,
762 fn
->fec
.u
.ipv6
.prefixlen
) != FILTER_PERMIT
)
770 * If connected interface act as egress for fec.
771 * If LDP is not configured on an interface but there
772 * are other NHs with interfaces configured with LDP
773 * then don't act as an egress for the fec, otherwise
774 * act as an egress for the fec
776 if (lde_fec_connected(fn
) || lde_fec_outside_mpls_network(fn
)) {
777 /* choose implicit or explicit-null depending on configuration */
778 switch (fn
->fec
.type
) {
780 if (!(ldeconf
->ipv4
.flags
& F_LDPD_AF_EXPNULL
))
781 return (MPLS_LABEL_IMPLICIT_NULL
);
782 if (lde_acl_check(ldeconf
->ipv4
.acl_label_expnull_for
,
783 AF_INET
, (union ldpd_addr
*)&fn
->fec
.u
.ipv4
.prefix
,
784 fn
->fec
.u
.ipv4
.prefixlen
) != FILTER_PERMIT
)
785 return (MPLS_LABEL_IMPLICIT_NULL
);
786 return MPLS_LABEL_IPV4_EXPLICIT_NULL
;
788 if (!(ldeconf
->ipv6
.flags
& F_LDPD_AF_EXPNULL
))
789 return (MPLS_LABEL_IMPLICIT_NULL
);
790 if (lde_acl_check(ldeconf
->ipv6
.acl_label_expnull_for
,
791 AF_INET6
, (union ldpd_addr
*)&fn
->fec
.u
.ipv6
.prefix
,
792 fn
->fec
.u
.ipv6
.prefixlen
) != FILTER_PERMIT
)
793 return (MPLS_LABEL_IMPLICIT_NULL
);
794 return MPLS_LABEL_IPV6_EXPLICIT_NULL
;
800 /* preserve current label if there's no need to update it */
801 if (fn
->local_label
!= NO_LABEL
&&
802 fn
->local_label
> MPLS_LABEL_RESERVED_MAX
)
803 return (fn
->local_label
);
805 return (lde_get_next_label());
809 lde_send_change_klabel(struct fec_node
*fn
, struct fec_nh
*fnh
)
816 * Ordered Control: don't program label into HW until a
817 * labelmap msg has been received from upstream router
819 if (fnh
->flags
& F_FEC_NH_DEFER
)
822 switch (fn
->fec
.type
) {
824 memset(&kr
, 0, sizeof(kr
));
826 kr
.prefix
.v4
= fn
->fec
.u
.ipv4
.prefix
;
827 kr
.prefixlen
= fn
->fec
.u
.ipv4
.prefixlen
;
828 kr
.nexthop
.v4
= fnh
->nexthop
.v4
;
829 kr
.ifindex
= fnh
->ifindex
;
830 kr
.local_label
= fn
->local_label
;
831 kr
.remote_label
= fnh
->remote_label
;
832 kr
.route_type
= fnh
->route_type
;
833 kr
.route_instance
= fnh
->route_instance
;
834 lde_imsg_compose_parent(IMSG_KLABEL_CHANGE
, 0, &kr
,
838 memset(&kr
, 0, sizeof(kr
));
840 kr
.prefix
.v6
= fn
->fec
.u
.ipv6
.prefix
;
841 kr
.prefixlen
= fn
->fec
.u
.ipv6
.prefixlen
;
842 kr
.nexthop
.v6
= fnh
->nexthop
.v6
;
843 kr
.ifindex
= fnh
->ifindex
;
844 kr
.local_label
= fn
->local_label
;
845 kr
.remote_label
= fnh
->remote_label
;
846 kr
.route_type
= fnh
->route_type
;
847 kr
.route_instance
= fnh
->route_instance
;
849 lde_imsg_compose_parent(IMSG_KLABEL_CHANGE
, 0, &kr
,
853 pw
= (struct l2vpn_pw
*) fn
->data
;
854 if (!pw
|| fn
->local_label
== NO_LABEL
||
855 fnh
->remote_label
== NO_LABEL
)
860 zpw
.local_label
= fn
->local_label
;
861 zpw
.remote_label
= fnh
->remote_label
;
862 lde_imsg_compose_parent(IMSG_KPW_SET
, 0, &zpw
, sizeof(zpw
));
868 lde_send_delete_klabel(struct fec_node
*fn
, struct fec_nh
*fnh
)
874 switch (fn
->fec
.type
) {
876 memset(&kr
, 0, sizeof(kr
));
878 kr
.prefix
.v4
= fn
->fec
.u
.ipv4
.prefix
;
879 kr
.prefixlen
= fn
->fec
.u
.ipv4
.prefixlen
;
880 kr
.nexthop
.v4
= fnh
->nexthop
.v4
;
881 kr
.ifindex
= fnh
->ifindex
;
882 kr
.local_label
= fn
->local_label
;
883 kr
.remote_label
= fnh
->remote_label
;
884 kr
.route_type
= fnh
->route_type
;
885 kr
.route_instance
= fnh
->route_instance
;
887 lde_imsg_compose_parent(IMSG_KLABEL_DELETE
, 0, &kr
,
891 memset(&kr
, 0, sizeof(kr
));
893 kr
.prefix
.v6
= fn
->fec
.u
.ipv6
.prefix
;
894 kr
.prefixlen
= fn
->fec
.u
.ipv6
.prefixlen
;
895 kr
.nexthop
.v6
= fnh
->nexthop
.v6
;
896 kr
.ifindex
= fnh
->ifindex
;
897 kr
.local_label
= fn
->local_label
;
898 kr
.remote_label
= fnh
->remote_label
;
899 kr
.route_type
= fnh
->route_type
;
900 kr
.route_instance
= fnh
->route_instance
;
902 lde_imsg_compose_parent(IMSG_KLABEL_DELETE
, 0, &kr
,
906 pw
= (struct l2vpn_pw
*) fn
->data
;
912 zpw
.local_label
= fn
->local_label
;
913 zpw
.remote_label
= fnh
->remote_label
;
914 lde_imsg_compose_parent(IMSG_KPW_UNSET
, 0, &zpw
, sizeof(zpw
));
920 lde_fec2prefix(const struct fec
*fec
, struct prefix
*prefix
)
922 memset(prefix
, 0, sizeof(*prefix
));
925 prefix
->family
= AF_INET
;
926 prefix
->u
.prefix4
= fec
->u
.ipv4
.prefix
;
927 prefix
->prefixlen
= fec
->u
.ipv4
.prefixlen
;
930 prefix
->family
= AF_INET6
;
931 prefix
->u
.prefix6
= fec
->u
.ipv6
.prefix
;
932 prefix
->prefixlen
= fec
->u
.ipv6
.prefixlen
;
935 prefix
->family
= AF_UNSPEC
;
941 lde_prefix2fec(const struct prefix
*prefix
, struct fec
*fec
)
943 memset(fec
, 0, sizeof(*fec
));
944 switch (prefix
->family
) {
946 fec
->type
= FEC_TYPE_IPV4
;
947 fec
->u
.ipv4
.prefix
= prefix
->u
.prefix4
;
948 fec
->u
.ipv4
.prefixlen
= prefix
->prefixlen
;
951 fec
->type
= FEC_TYPE_IPV6
;
952 fec
->u
.ipv6
.prefix
= prefix
->u
.prefix6
;
953 fec
->u
.ipv6
.prefixlen
= prefix
->prefixlen
;
956 fatalx("lde_prefix2fec: unknown af");
962 lde_fec2map(struct fec
*fec
, struct map
*map
)
964 memset(map
, 0, sizeof(*map
));
968 map
->type
= MAP_TYPE_PREFIX
;
969 map
->fec
.prefix
.af
= AF_INET
;
970 map
->fec
.prefix
.prefix
.v4
= fec
->u
.ipv4
.prefix
;
971 map
->fec
.prefix
.prefixlen
= fec
->u
.ipv4
.prefixlen
;
974 map
->type
= MAP_TYPE_PREFIX
;
975 map
->fec
.prefix
.af
= AF_INET6
;
976 map
->fec
.prefix
.prefix
.v6
= fec
->u
.ipv6
.prefix
;
977 map
->fec
.prefix
.prefixlen
= fec
->u
.ipv6
.prefixlen
;
980 map
->type
= MAP_TYPE_PWID
;
981 map
->fec
.pwid
.type
= fec
->u
.pwid
.type
;
982 map
->fec
.pwid
.group_id
= 0;
983 map
->flags
|= F_MAP_PW_ID
;
984 map
->fec
.pwid
.pwid
= fec
->u
.pwid
.pwid
;
990 lde_map2fec(struct map
*map
, struct in_addr lsr_id
, struct fec
*fec
)
992 memset(fec
, 0, sizeof(*fec
));
995 case MAP_TYPE_PREFIX
:
996 switch (map
->fec
.prefix
.af
) {
998 fec
->type
= FEC_TYPE_IPV4
;
999 fec
->u
.ipv4
.prefix
= map
->fec
.prefix
.prefix
.v4
;
1000 fec
->u
.ipv4
.prefixlen
= map
->fec
.prefix
.prefixlen
;
1003 fec
->type
= FEC_TYPE_IPV6
;
1004 fec
->u
.ipv6
.prefix
= map
->fec
.prefix
.prefix
.v6
;
1005 fec
->u
.ipv6
.prefixlen
= map
->fec
.prefix
.prefixlen
;
1008 fatalx("lde_map2fec: unknown af");
1013 fec
->type
= FEC_TYPE_PWID
;
1014 fec
->u
.pwid
.type
= map
->fec
.pwid
.type
;
1015 fec
->u
.pwid
.pwid
= map
->fec
.pwid
.pwid
;
1016 fec
->u
.pwid
.lsr_id
= lsr_id
;
1022 lde_send_labelmapping(struct lde_nbr
*ln
, struct fec_node
*fn
, int single
)
1024 struct lde_wdraw
*lw
;
1026 struct lde_req
*lre
;
1028 struct l2vpn_pw
*pw
;
1033 * Ordered Control: do not send a labelmap msg until
1034 * a labelmap message is received from downstream router
1035 * and don't send labelmap back to downstream router
1037 if (ldeconf
->flags
& F_LDPD_ORDERED_CONTROL
) {
1038 LIST_FOREACH(fnh
, &fn
->nexthops
, entry
) {
1039 if (fnh
->flags
& F_FEC_NH_DEFER
)
1042 if (lde_address_find(ln
, fnh
->af
, &fnh
->nexthop
))
1052 * We shouldn't send a new label mapping if we have a pending
1053 * label release to receive. In this case, schedule to send a
1054 * label mapping as soon as a label release is received.
1056 lw
= (struct lde_wdraw
*)fec_find(&ln
->sent_wdraw
, &fn
->fec
);
1058 if (!fec_find(&ln
->sent_map_pending
, &fn
->fec
)) {
1059 debug_evt("%s: FEC %s: scheduling to send label mapping later (waiting for pending label release)",
1060 __func__
, log_fec(&fn
->fec
));
1061 lde_map_pending_add(ln
, fn
);
1067 * This function skips SL.1 - 3 and SL.9 - 14 because the label
1068 * allocation is done way earlier (because of the merging nature of
1072 lde_fec2map(&fn
->fec
, &map
);
1073 switch (fn
->fec
.type
) {
1075 if (!ln
->v4_enabled
)
1077 if (lde_acl_check(ldeconf
->ipv4
.acl_label_advertise_to
,
1078 AF_INET
, (union ldpd_addr
*)&ln
->id
, 32) != FILTER_PERMIT
)
1080 if (lde_acl_check(ldeconf
->ipv4
.acl_label_advertise_for
,
1081 AF_INET
, (union ldpd_addr
*)&fn
->fec
.u
.ipv4
.prefix
,
1082 fn
->fec
.u
.ipv4
.prefixlen
) != FILTER_PERMIT
)
1086 if (!ln
->v6_enabled
)
1088 if (lde_acl_check(ldeconf
->ipv6
.acl_label_advertise_to
,
1089 AF_INET
, (union ldpd_addr
*)&ln
->id
, 32) != FILTER_PERMIT
)
1091 if (lde_acl_check(ldeconf
->ipv6
.acl_label_advertise_for
,
1092 AF_INET6
, (union ldpd_addr
*)&fn
->fec
.u
.ipv6
.prefix
,
1093 fn
->fec
.u
.ipv6
.prefixlen
) != FILTER_PERMIT
)
1097 pw
= (struct l2vpn_pw
*) fn
->data
;
1098 if (pw
== NULL
|| pw
->lsr_id
.s_addr
!= ln
->id
.s_addr
)
1099 /* not the remote end of the pseudowire */
1102 map
.flags
|= F_MAP_PW_IFMTU
;
1103 map
.fec
.pwid
.ifmtu
= pw
->l2vpn
->mtu
;
1104 if (pw
->flags
& F_PW_CWORD
)
1105 map
.flags
|= F_MAP_PW_CWORD
;
1106 if (pw
->flags
& F_PW_STATUSTLV
) {
1107 map
.flags
|= F_MAP_PW_STATUS
;
1108 map
.pw_status
= pw
->local_status
;
1112 map
.label
= fn
->local_label
;
1114 /* SL.6: is there a pending request for this mapping? */
1115 lre
= (struct lde_req
*)fec_find(&ln
->recv_req
, &fn
->fec
);
1117 /* set label request msg id in the mapping response. */
1118 map
.requestid
= lre
->msg_id
;
1119 map
.flags
= F_MAP_REQ_ID
;
1121 /* SL.7: delete record of pending request */
1122 lde_req_del(ln
, lre
, 0);
1125 /* SL.4: send label mapping */
1126 lde_imsg_compose_ldpe(IMSG_MAPPING_ADD
, ln
->peerid
, 0,
1129 lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END
, ln
->peerid
, 0,
1132 /* SL.5: record sent label mapping */
1133 me
= (struct lde_map
*)fec_find(&ln
->sent_map
, &fn
->fec
);
1135 me
= lde_map_add(ln
, fn
, 1);
1140 lde_send_labelwithdraw(struct lde_nbr
*ln
, struct fec_node
*fn
,
1141 struct map
*wcard
, struct status_tlv
*st
)
1143 struct lde_wdraw
*lw
;
1146 struct l2vpn_pw
*pw
;
1149 lde_fec2map(&fn
->fec
, &map
);
1150 switch (fn
->fec
.type
) {
1152 if (!ln
->v4_enabled
)
1156 if (!ln
->v6_enabled
)
1160 pw
= (struct l2vpn_pw
*) fn
->data
;
1161 if (pw
== NULL
|| pw
->lsr_id
.s_addr
!= ln
->id
.s_addr
)
1162 /* not the remote end of the pseudowire */
1165 if (pw
->flags
& F_PW_CWORD
)
1166 map
.flags
|= F_MAP_PW_CWORD
;
1169 map
.label
= fn
->local_label
;
1171 memcpy(&map
, wcard
, sizeof(map
));
1174 map
.st
.status_code
= st
->status_code
;
1175 map
.st
.msg_id
= st
->msg_id
;
1176 map
.st
.msg_type
= st
->msg_type
;
1177 map
.flags
|= F_MAP_STATUS
;
1180 /* SWd.1: send label withdraw. */
1181 lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD
, ln
->peerid
, 0,
1183 lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD_END
, ln
->peerid
, 0, NULL
, 0);
1185 /* SWd.2: record label withdraw. */
1187 lw
= (struct lde_wdraw
*)fec_find(&ln
->sent_wdraw
, &fn
->fec
);
1189 lw
= lde_wdraw_add(ln
, fn
);
1190 lw
->label
= map
.label
;
1194 RB_FOREACH(f
, fec_tree
, &ft
) {
1195 fn
= (struct fec_node
*)f
;
1196 me
= (struct lde_map
*)fec_find(&ln
->sent_map
, &fn
->fec
);
1197 if (lde_wildcard_apply(wcard
, &fn
->fec
, me
) == 0)
1200 lw
= (struct lde_wdraw
*)fec_find(&ln
->sent_wdraw
,
1203 lw
= lde_wdraw_add(ln
, fn
);
1204 lw
->label
= map
.label
;
1210 lde_send_labelwithdraw_wcard(struct lde_nbr
*ln
, uint32_t label
)
1214 memset(&wcard
, 0, sizeof(wcard
));
1215 wcard
.type
= MAP_TYPE_WILDCARD
;
1216 wcard
.label
= label
;
1217 lde_send_labelwithdraw(ln
, NULL
, &wcard
, NULL
);
1221 lde_send_labelwithdraw_twcard_prefix(struct lde_nbr
*ln
, uint16_t af
,
1226 memset(&wcard
, 0, sizeof(wcard
));
1227 wcard
.type
= MAP_TYPE_TYPED_WCARD
;
1228 wcard
.fec
.twcard
.type
= MAP_TYPE_PREFIX
;
1229 wcard
.fec
.twcard
.u
.prefix_af
= af
;
1230 wcard
.label
= label
;
1231 lde_send_labelwithdraw(ln
, NULL
, &wcard
, NULL
);
1235 lde_send_labelwithdraw_twcard_pwid(struct lde_nbr
*ln
, uint16_t pw_type
,
1240 memset(&wcard
, 0, sizeof(wcard
));
1241 wcard
.type
= MAP_TYPE_TYPED_WCARD
;
1242 wcard
.fec
.twcard
.type
= MAP_TYPE_PWID
;
1243 wcard
.fec
.twcard
.u
.pw_type
= pw_type
;
1244 wcard
.label
= label
;
1245 lde_send_labelwithdraw(ln
, NULL
, &wcard
, NULL
);
1249 lde_send_labelwithdraw_pwid_wcard(struct lde_nbr
*ln
, uint16_t pw_type
,
1254 memset(&wcard
, 0, sizeof(wcard
));
1255 wcard
.type
= MAP_TYPE_PWID
;
1256 wcard
.fec
.pwid
.type
= pw_type
;
1257 wcard
.fec
.pwid
.group_id
= group_id
;
1258 /* we can not append a Label TLV when using PWid group wildcards. */
1259 wcard
.label
= NO_LABEL
;
1260 lde_send_labelwithdraw(ln
, NULL
, &wcard
, NULL
);
1264 lde_send_labelrelease(struct lde_nbr
*ln
, struct fec_node
*fn
,
1265 struct map
*wcard
, uint32_t label
)
1268 struct l2vpn_pw
*pw
;
1271 lde_fec2map(&fn
->fec
, &map
);
1272 switch (fn
->fec
.type
) {
1274 if (!ln
->v4_enabled
)
1278 if (!ln
->v6_enabled
)
1282 pw
= (struct l2vpn_pw
*) fn
->data
;
1283 if (pw
== NULL
|| pw
->lsr_id
.s_addr
!= ln
->id
.s_addr
)
1284 /* not the remote end of the pseudowire */
1287 if (pw
->flags
& F_PW_CWORD
)
1288 map
.flags
|= F_MAP_PW_CWORD
;
1292 memcpy(&map
, wcard
, sizeof(map
));
1295 lde_imsg_compose_ldpe(IMSG_RELEASE_ADD
, ln
->peerid
, 0,
1297 lde_imsg_compose_ldpe(IMSG_RELEASE_ADD_END
, ln
->peerid
, 0, NULL
, 0);
1301 lde_send_labelrequest(struct lde_nbr
*ln
, struct fec_node
*fn
,
1302 struct map
*wcard
, int single
)
1306 struct lde_req
*lre
;
1309 lde_fec2map(&fn
->fec
, &map
);
1310 switch (fn
->fec
.type
) {
1312 if (!ln
->v4_enabled
)
1316 if (!ln
->v6_enabled
)
1320 fatalx("lde_send_labelrequest: unknown af");
1323 memcpy(&map
, wcard
, sizeof(map
));
1325 map
.label
= NO_LABEL
;
1328 /* SLR1.1: has label request for FEC been previously sent
1329 * and still outstanding just return,
1331 lre
= (struct lde_req
*)fec_find(&ln
->sent_req
, &fn
->fec
);
1333 /* SLRq.3: send label request */
1334 lde_imsg_compose_ldpe(IMSG_REQUEST_ADD
, ln
->peerid
, 0,
1337 lde_imsg_compose_ldpe(IMSG_REQUEST_ADD_END
,
1338 ln
->peerid
, 0, NULL
, 0);
1340 /* SLRq.4: record sent request */
1341 lde_req_add(ln
, &fn
->fec
, 1);
1344 /* if Wilcard just send label request */
1345 /* SLRq.3: send label request */
1346 lde_imsg_compose_ldpe(IMSG_REQUEST_ADD
,
1347 ln
->peerid
, 0, &map
, sizeof(map
));
1349 lde_imsg_compose_ldpe(IMSG_REQUEST_ADD_END
,
1350 ln
->peerid
, 0, NULL
, 0);
1352 /* SLRq.4: record sent request */
1353 RB_FOREACH(f
, fec_tree
, &ft
) {
1354 fn
= (struct fec_node
*)f
;
1355 lre
= (struct lde_req
*)fec_find(&ln
->sent_req
, &fn
->fec
);
1356 if (lde_wildcard_apply(wcard
, &fn
->fec
, NULL
) == 0)
1359 lde_req_add(ln
, f
, 1);
1365 lde_send_labelrequest_wcard(struct lde_nbr
*ln
, uint16_t af
)
1369 memset(&wcard
, 0, sizeof(wcard
));
1370 wcard
.type
= MAP_TYPE_TYPED_WCARD
;
1371 wcard
.fec
.twcard
.type
= MAP_TYPE_PREFIX
;
1372 wcard
.fec
.twcard
.u
.prefix_af
= af
;
1373 lde_send_labelrequest(ln
, NULL
, &wcard
, 1);
1377 lde_send_notification(struct lde_nbr
*ln
, uint32_t status_code
, uint32_t msg_id
,
1380 struct notify_msg nm
;
1382 memset(&nm
, 0, sizeof(nm
));
1383 nm
.status_code
= status_code
;
1384 /* 'msg_id' and 'msg_type' should be in network byte order */
1386 nm
.msg_type
= msg_type
;
1388 lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND
, ln
->peerid
, 0,
1393 lde_send_notification_eol_prefix(struct lde_nbr
*ln
, int af
)
1395 struct notify_msg nm
;
1397 memset(&nm
, 0, sizeof(nm
));
1398 nm
.status_code
= S_ENDOFLIB
;
1399 nm
.fec
.type
= MAP_TYPE_TYPED_WCARD
;
1400 nm
.fec
.fec
.twcard
.type
= MAP_TYPE_PREFIX
;
1401 nm
.fec
.fec
.twcard
.u
.prefix_af
= af
;
1402 nm
.flags
|= F_NOTIF_FEC
;
1404 lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND
, ln
->peerid
, 0,
1409 lde_send_notification_eol_pwid(struct lde_nbr
*ln
, uint16_t pw_type
)
1411 struct notify_msg nm
;
1413 memset(&nm
, 0, sizeof(nm
));
1414 nm
.status_code
= S_ENDOFLIB
;
1415 nm
.fec
.type
= MAP_TYPE_TYPED_WCARD
;
1416 nm
.fec
.fec
.twcard
.type
= MAP_TYPE_PWID
;
1417 nm
.fec
.fec
.twcard
.u
.pw_type
= pw_type
;
1418 nm
.flags
|= F_NOTIF_FEC
;
1420 lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND
, ln
->peerid
, 0,
1425 lde_nbr_compare(const struct lde_nbr
*a
, const struct lde_nbr
*b
)
1427 return (a
->peerid
- b
->peerid
);
1430 static struct lde_nbr
*
1431 lde_nbr_new(uint32_t peerid
, struct lde_nbr
*new)
1435 if ((ln
= calloc(1, sizeof(*ln
))) == NULL
)
1439 ln
->v4_enabled
= new->v4_enabled
;
1440 ln
->v6_enabled
= new->v6_enabled
;
1441 ln
->flags
= new->flags
;
1442 ln
->peerid
= peerid
;
1443 fec_init(&ln
->recv_map
);
1444 fec_init(&ln
->sent_map
);
1445 fec_init(&ln
->sent_map_pending
);
1446 fec_init(&ln
->recv_req
);
1447 fec_init(&ln
->sent_req
);
1448 fec_init(&ln
->sent_wdraw
);
1450 TAILQ_INIT(&ln
->addr_list
);
1452 if (RB_INSERT(nbr_tree
, &lde_nbrs
, ln
) != NULL
)
1453 fatalx("lde_nbr_new: RB_INSERT failed");
1459 lde_nbr_del(struct lde_nbr
*ln
)
1462 struct fec_node
*fn
;
1464 struct l2vpn_pw
*pw
;
1465 struct lde_nbr
*lnbr
;
1470 /* uninstall received mappings */
1471 RB_FOREACH(f
, fec_tree
, &ft
) {
1472 fn
= (struct fec_node
*)f
;
1474 /* Update RLFA clients. */
1475 lde_rlfa_update_clients(f
, ln
, MPLS_INVALID_LABEL
);
1477 LIST_FOREACH(fnh
, &fn
->nexthops
, entry
) {
1481 if (!lde_address_find(ln
, fnh
->af
,
1486 * Ordered Control: must mark any non-connected
1487 * NH to wait until we receive a labelmap msg
1488 * before installing in kernel and sending to
1489 * peer, must do this as NHs are not removed
1490 * when lsps go down. Also send label withdraw
1491 * to other neighbors for all fecs from neighbor
1494 if (ldeconf
->flags
& F_LDPD_ORDERED_CONTROL
) {
1495 fnh
->flags
|= F_FEC_NH_DEFER
;
1497 RB_FOREACH(lnbr
, nbr_tree
, &lde_nbrs
) {
1498 if (ln
->peerid
== lnbr
->peerid
)
1500 lde_send_labelwithdraw(lnbr
, fn
, NULL
, NULL
);
1505 if (f
->u
.pwid
.lsr_id
.s_addr
!= ln
->id
.s_addr
)
1507 pw
= (struct l2vpn_pw
*) fn
->data
;
1509 pw
->reason
= F_PW_NO_REMOTE_LABEL
;
1517 lde_send_delete_klabel(fn
, fnh
);
1518 fnh
->remote_label
= NO_LABEL
;
1522 lde_address_list_free(ln
);
1524 fec_clear(&ln
->recv_map
, lde_map_free
);
1525 fec_clear(&ln
->sent_map
, lde_map_free
);
1526 fec_clear(&ln
->sent_map_pending
, free
);
1527 fec_clear(&ln
->recv_req
, free
);
1528 fec_clear(&ln
->sent_req
, free
);
1529 fec_clear(&ln
->sent_wdraw
, free
);
1531 RB_REMOVE(nbr_tree
, &lde_nbrs
, ln
);
1536 static struct lde_nbr
*
1537 lde_nbr_find(uint32_t peerid
)
1543 return (RB_FIND(nbr_tree
, &lde_nbrs
, &ln
));
1547 lde_nbr_find_by_lsrid(struct in_addr addr
)
1551 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
1552 if (ln
->id
.s_addr
== addr
.s_addr
)
1559 lde_nbr_find_by_addr(int af
, union ldpd_addr
*addr
)
1563 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
1564 if (lde_address_find(ln
, af
, addr
) != NULL
)
1575 while (!RB_EMPTY(nbr_tree
, &lde_nbrs
)) {
1576 ln
= RB_ROOT(nbr_tree
, &lde_nbrs
);
1583 lde_nbr_addr_update(struct lde_nbr
*ln
, struct lde_addr
*lde_addr
, int removed
)
1586 struct fec_node
*fn
;
1590 RB_FOREACH(fec
, fec_tree
, &ln
->recv_map
) {
1591 switch (fec
->type
) {
1593 if (lde_addr
->af
!= AF_INET
)
1597 if (lde_addr
->af
!= AF_INET6
)
1604 fn
= (struct fec_node
*)fec_find(&ft
, fec
);
1606 /* shouldn't happen */
1609 LIST_FOREACH(fnh
, &fn
->nexthops
, entry
) {
1610 if (ldp_addrcmp(fnh
->af
, &fnh
->nexthop
,
1615 lde_send_delete_klabel(fn
, fnh
);
1616 fnh
->remote_label
= NO_LABEL
;
1618 me
= (struct lde_map
*)fec
;
1619 fnh
->remote_label
= me
->map
.label
;
1620 lde_send_change_klabel(fn
, fnh
);
1628 lde_map_compare(const struct lde_map
*a
, const struct lde_map
*b
)
1630 return (ldp_addrcmp(AF_INET
, (union ldpd_addr
*)&a
->nexthop
->id
,
1631 (union ldpd_addr
*)&b
->nexthop
->id
));
1635 lde_map_add(struct lde_nbr
*ln
, struct fec_node
*fn
, int sent
)
1639 me
= calloc(1, sizeof(*me
));
1647 RB_INSERT(lde_map_head
, &fn
->upstream
, me
);
1648 me
->head
= &fn
->upstream
;
1649 if (fec_insert(&ln
->sent_map
, &me
->fec
))
1650 log_warnx("failed to add %s to sent map",
1652 /* XXX on failure more cleanup is needed */
1654 RB_INSERT(lde_map_head
, &fn
->downstream
, me
);
1655 me
->head
= &fn
->downstream
;
1656 if (fec_insert(&ln
->recv_map
, &me
->fec
))
1657 log_warnx("failed to add %s to recv map",
1665 lde_map_del(struct lde_nbr
*ln
, struct lde_map
*me
, int sent
)
1668 fec_remove(&ln
->sent_map
, &me
->fec
);
1670 fec_remove(&ln
->recv_map
, &me
->fec
);
1676 lde_map_free(void *ptr
)
1678 struct lde_map
*map
= ptr
;
1680 RB_REMOVE(lde_map_head
, map
->head
, map
);
1685 lde_map_pending_add(struct lde_nbr
*ln
, struct fec_node
*fn
)
1689 map
= calloc(1, sizeof(*map
));
1694 if (fec_insert(&ln
->sent_map_pending
, map
))
1695 log_warnx("failed to add %s to sent map (pending)",
1702 lde_map_pending_del(struct lde_nbr
*ln
, struct fec
*map
)
1704 fec_remove(&ln
->sent_map_pending
, map
);
1709 lde_req_add(struct lde_nbr
*ln
, struct fec
*fec
, int sent
)
1712 struct lde_req
*lre
;
1714 t
= sent
? &ln
->sent_req
: &ln
->recv_req
;
1716 lre
= calloc(1, sizeof(*lre
));
1720 if (fec_insert(t
, &lre
->fec
)) {
1721 log_warnx("failed to add %s to %s req",
1722 log_fec(&lre
->fec
), sent
? "sent" : "recv");
1732 lde_req_del(struct lde_nbr
*ln
, struct lde_req
*lre
, int sent
)
1735 fec_remove(&ln
->sent_req
, &lre
->fec
);
1737 fec_remove(&ln
->recv_req
, &lre
->fec
);
1743 lde_wdraw_add(struct lde_nbr
*ln
, struct fec_node
*fn
)
1745 struct lde_wdraw
*lw
;
1747 lw
= calloc(1, sizeof(*lw
));
1753 if (fec_insert(&ln
->sent_wdraw
, &lw
->fec
))
1754 log_warnx("failed to add %s to sent wdraw",
1761 lde_wdraw_del(struct lde_nbr
*ln
, struct lde_wdraw
*lw
)
1763 fec_remove(&ln
->sent_wdraw
, &lw
->fec
);
1768 lde_change_egress_label(int af
)
1772 struct fec_node
*fn
;
1774 /* explicitly withdraw all null labels */
1775 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
) {
1776 lde_send_labelwithdraw_wcard(ln
, MPLS_LABEL_IMPLICIT_NULL
);
1778 lde_send_labelwithdraw_wcard(
1780 MPLS_LABEL_IPV4_EXPLICIT_NULL
);
1782 lde_send_labelwithdraw_wcard(
1784 MPLS_LABEL_IPV6_EXPLICIT_NULL
);
1787 /* update label of connected routes */
1788 RB_FOREACH(f
, fec_tree
, &ft
) {
1789 fn
= (struct fec_node
*)f
;
1790 if (fn
->local_label
> MPLS_LABEL_RESERVED_MAX
)
1795 if (fn
->fec
.type
!= FEC_TYPE_IPV4
)
1799 if (fn
->fec
.type
!= FEC_TYPE_IPV6
)
1803 fatalx("lde_change_egress_label: unknown af");
1806 fn
->local_label
= lde_update_label(fn
);
1807 if (fn
->local_label
!= NO_LABEL
)
1808 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
1809 lde_send_labelmapping(ln
, fn
, 0);
1811 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
1812 lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END
, ln
->peerid
, 0,
1817 lde_change_allocate_filter(int af
)
1821 struct fec_node
*fn
;
1824 /* reallocate labels for fecs that match this filter */
1825 RB_FOREACH(f
, fec_tree
, &ft
) {
1826 fn
= (struct fec_node
*)f
;
1830 if (fn
->fec
.type
!= FEC_TYPE_IPV4
)
1834 if (fn
->fec
.type
!= FEC_TYPE_IPV6
)
1838 fatalx("lde_change_allocate_filter: unknown af");
1842 * If the local label has changed to NO_LABEL, send a label
1843 * withdraw to all peers.
1844 * If the local label has changed and it's different from
1845 * NO_LABEL, send a label mapping to all peers advertising
1847 * If the local label hasn't changed, do nothing
1849 new_label
= lde_update_label(fn
);
1850 if (fn
->local_label
!= new_label
) {
1851 if (new_label
== NO_LABEL
)
1852 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
1853 lde_send_labelwithdraw(ln
, fn
,
1856 fn
->local_label
= new_label
;
1857 if (fn
->local_label
!= NO_LABEL
)
1858 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
1859 lde_send_labelmapping(ln
, fn
, 0);
1862 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
1863 lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END
, ln
->peerid
, 0,
1868 lde_change_advertise_filter(int af
)
1872 struct fec_node
*fn
;
1873 char *acl_to_filter
;
1874 char *acl_for_filter
;
1875 union ldpd_addr
*prefix
;
1879 /* advertise label for fecs to neighbors if matches advertise filters */
1882 acl_to_filter
= ldeconf
->ipv4
.acl_label_advertise_to
;
1883 acl_for_filter
= ldeconf
->ipv4
.acl_label_advertise_for
;
1886 acl_to_filter
= ldeconf
->ipv6
.acl_label_advertise_to
;
1887 acl_for_filter
= ldeconf
->ipv6
.acl_label_advertise_for
;
1890 fatalx("lde_change_advertise_filter: unknown af");
1893 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
) {
1894 if (lde_acl_check(acl_to_filter
, af
, (union ldpd_addr
*)&ln
->id
,
1895 IPV4_MAX_BITLEN
) != FILTER_PERMIT
)
1896 lde_send_labelwithdraw_wcard(ln
, NO_LABEL
);
1898 /* This neighbor is allowed in to_filter, so
1899 * send labels if fec also matches for_filter
1901 RB_FOREACH(f
, fec_tree
, &ft
) {
1902 fn
= (struct fec_node
*)f
;
1905 if (fn
->fec
.type
!= FEC_TYPE_IPV4
)
1907 prefix
= (union ldpd_addr
*)
1908 &fn
->fec
.u
.ipv4
.prefix
;
1909 plen
= fn
->fec
.u
.ipv4
.prefixlen
;
1912 if (fn
->fec
.type
!= FEC_TYPE_IPV6
)
1914 prefix
= (union ldpd_addr
*)
1915 &fn
->fec
.u
.ipv6
.prefix
;
1916 plen
= fn
->fec
.u
.ipv6
.prefixlen
;
1921 if (lde_acl_check(acl_for_filter
, af
,
1922 prefix
, plen
) != FILTER_PERMIT
) {
1923 me
= (struct lde_map
*)fec_find(
1924 &ln
->sent_map
, &fn
->fec
);
1926 /* fec filtered withdraw */
1927 lde_send_labelwithdraw(ln
, fn
,
1930 /* fec allowed send map */
1931 lde_send_labelmapping(ln
, fn
, 0);
1933 lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END
,
1934 ln
->peerid
, 0, NULL
, 0);
1941 lde_change_accept_filter(int af
)
1945 struct fec_node
*fn
;
1946 char *acl_for_filter
;
1947 char *acl_from_filter
;
1948 union ldpd_addr
*prefix
;
1953 /* accept labels from neighbors specified in the from_filter and for
1954 * fecs defined in the for_filter
1958 acl_for_filter
= ldeconf
->ipv4
.acl_label_accept_for
;
1959 acl_from_filter
= ldeconf
->ipv4
.acl_label_accept_from
;
1960 type
= FEC_TYPE_IPV4
;
1963 acl_for_filter
= ldeconf
->ipv6
.acl_label_accept_for
;
1964 acl_from_filter
= ldeconf
->ipv6
.acl_label_accept_from
;
1965 type
= FEC_TYPE_IPV6
;
1968 fatalx("lde_change_accept_filter: unknown af");
1971 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
) {
1972 if (lde_acl_check(acl_from_filter
, AF_INET
, (union ldpd_addr
*)
1973 &ln
->id
, IPV4_MAX_BITLEN
) != FILTER_PERMIT
) {
1974 /* This neighbor is now filtered so remove fecs from
1977 RB_FOREACH(f
, fec_tree
, &ft
) {
1978 fn
= (struct fec_node
*)f
;
1979 if (fn
->fec
.type
== type
) {
1980 me
= (struct lde_map
*)fec_find(
1981 &ln
->recv_map
, &fn
->fec
);
1983 lde_map_del(ln
, me
, 0);
1986 } else if (ln
->flags
& F_NBR_CAP_TWCARD
) {
1987 /* This neighbor is allowed and supports type
1988 * wildcard so send a labelrequest
1989 * to get any new labels from neighbor
1990 * and make sure any fecs we currently have
1993 RB_FOREACH(f
, fec_tree
, &ft
) {
1994 fn
= (struct fec_node
*)f
;
1997 if (fn
->fec
.type
!= FEC_TYPE_IPV4
)
1999 prefix
= (union ldpd_addr
*)
2000 &fn
->fec
.u
.ipv4
.prefix
;
2001 plen
= fn
->fec
.u
.ipv4
.prefixlen
;
2004 if (fn
->fec
.type
!= FEC_TYPE_IPV6
)
2006 prefix
= (union ldpd_addr
*)
2007 &fn
->fec
.u
.ipv6
.prefix
;
2008 plen
= fn
->fec
.u
.ipv6
.prefixlen
;
2013 if (lde_acl_check(acl_for_filter
, af
,
2014 prefix
, plen
) != FILTER_PERMIT
) {
2015 me
= (struct lde_map
*)fec_find(
2016 &ln
->recv_map
, &fn
->fec
);
2018 lde_map_del(ln
, me
, 0);
2021 lde_send_labelrequest_wcard(ln
, af
);
2023 /* Type Wildcard is not supported so restart session */
2024 lde_imsg_compose_ldpe(IMSG_NBR_SHUTDOWN
, ln
->peerid
, 0,
2030 lde_change_expnull_for_filter(int af
)
2034 struct fec_node
*fn
;
2037 union ldpd_addr
*prefix
;
2040 /* Configure explicit-null advertisement for all fecs in this filter */
2041 RB_FOREACH(f
, fec_tree
, &ft
) {
2042 fn
= (struct fec_node
*)f
;
2046 if (fn
->fec
.type
!= FEC_TYPE_IPV4
)
2048 acl_name
= ldeconf
->ipv4
.acl_label_expnull_for
;
2049 prefix
= (union ldpd_addr
*)&fn
->fec
.u
.ipv4
.prefix
;
2050 plen
= fn
->fec
.u
.ipv4
.prefixlen
;
2051 exp_label
= MPLS_LABEL_IPV4_EXPLICIT_NULL
;
2054 if (fn
->fec
.type
!= FEC_TYPE_IPV6
)
2056 acl_name
= ldeconf
->ipv6
.acl_label_expnull_for
;
2057 prefix
= (union ldpd_addr
*)&fn
->fec
.u
.ipv6
.prefix
;
2058 plen
= fn
->fec
.u
.ipv6
.prefixlen
;
2059 exp_label
= MPLS_LABEL_IPV6_EXPLICIT_NULL
;
2062 fatalx("lde_change_expnull_for_filter: unknown af");
2065 if (lde_acl_check(acl_name
, af
, prefix
, plen
) == FILTER_PERMIT
) {
2066 /* for this fec change any imp-null to exp-null */
2067 if (fn
->local_label
== MPLS_LABEL_IMPLICIT_NULL
) {
2068 fn
->local_label
= lde_update_label(fn
);
2069 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
2070 lde_send_labelmapping(ln
, fn
, 0);
2073 /* for this fec change any exp-null back to imp-null */
2074 if (fn
->local_label
== exp_label
) {
2075 fn
->local_label
= lde_update_label(fn
);
2076 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
2077 lde_send_labelmapping(ln
, fn
, 0);
2081 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
2082 lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END
, ln
->peerid
, 0,
2087 lde_address_add(struct lde_nbr
*ln
, struct lde_addr
*lde_addr
)
2089 struct lde_addr
*new;
2091 if (lde_address_find(ln
, lde_addr
->af
, &lde_addr
->addr
) != NULL
)
2094 if ((new = calloc(1, sizeof(*new))) == NULL
)
2097 new->af
= lde_addr
->af
;
2098 new->addr
= lde_addr
->addr
;
2099 TAILQ_INSERT_TAIL(&ln
->addr_list
, new, entry
);
2101 /* reevaluate the previously received mappings from this neighbor */
2102 lde_nbr_addr_update(ln
, lde_addr
, 0);
2108 lde_address_del(struct lde_nbr
*ln
, struct lde_addr
*lde_addr
)
2110 lde_addr
= lde_address_find(ln
, lde_addr
->af
, &lde_addr
->addr
);
2111 if (lde_addr
== NULL
)
2114 /* reevaluate the previously received mappings from this neighbor */
2115 lde_nbr_addr_update(ln
, lde_addr
, 1);
2117 TAILQ_REMOVE(&ln
->addr_list
, lde_addr
, entry
);
2124 lde_address_find(struct lde_nbr
*ln
, int af
, union ldpd_addr
*addr
)
2126 struct lde_addr
*lde_addr
;
2128 TAILQ_FOREACH(lde_addr
, &ln
->addr_list
, entry
)
2129 if (lde_addr
->af
== af
&&
2130 ldp_addrcmp(af
, &lde_addr
->addr
, addr
) == 0)
2137 lde_address_list_free(struct lde_nbr
*ln
)
2139 struct lde_addr
*lde_addr
;
2141 while ((lde_addr
= TAILQ_POP_FIRST(&ln
->addr_list
, entry
)) != NULL
)
2146 * Event callback used to retry the label-manager sync zapi session.
2148 static int zclient_sync_retry(struct thread
*thread
)
2150 zclient_sync_init();
2156 * Initialize and open a synchronous zapi session. This is used by label chunk
2157 * management code, which acquires and releases blocks of labels from the
2158 * zebra label-manager module.
2160 static void zclient_sync_init(void)
2162 struct zclient_options options
= zclient_options_default
;
2164 options
.synchronous
= true;
2166 /* Initialize special zclient for synchronous message exchanges. */
2167 zclient_sync
= zclient_new(master
, &options
);
2168 zclient_sync
->sock
= -1;
2169 zclient_sync
->redist_default
= ZEBRA_ROUTE_LDP
;
2170 zclient_sync
->session_id
= 1; /* Distinguish from main session */
2171 zclient_sync
->privs
= &lde_privs
;
2173 if (zclient_socket_connect(zclient_sync
) < 0) {
2174 log_warnx("Error connecting synchronous zclient!");
2177 /* make socket non-blocking */
2178 sock_set_nonblock(zclient_sync
->sock
);
2180 /* Send hello to notify zebra this is a synchronous client */
2181 if (zclient_send_hello(zclient_sync
) == ZCLIENT_SEND_FAILURE
) {
2182 log_warnx("Error sending hello for synchronous zclient!");
2186 /* Connect to label manager */
2187 if (lm_label_manager_connect(zclient_sync
, 0) != 0) {
2188 log_warnx("Error connecting to label manager!");
2192 /* Finish label-manager init once the LM session is running */
2193 lde_label_list_init();
2199 /* Discard failed zclient object */
2200 zclient_stop(zclient_sync
);
2201 zclient_free(zclient_sync
);
2202 zclient_sync
= NULL
;
2204 /* Retry using a timer */
2205 thread_add_timer(master
, zclient_sync_retry
, NULL
, 1, NULL
);
2209 lde_del_label_chunk(void *val
)
2215 lde_release_label_chunk(uint32_t start
, uint32_t end
)
2219 ret
= lm_release_label_chunk(zclient_sync
, start
, end
);
2221 log_warnx("Error releasing label chunk!");
2228 lde_get_label_chunk(void)
2231 uint32_t start
, end
;
2233 debug_labels("getting label chunk (size %u)", CHUNK_SIZE
);
2234 ret
= lm_get_label_chunk(zclient_sync
, 0, MPLS_LABEL_BASE_ANY
,
2235 CHUNK_SIZE
, &start
, &end
);
2237 log_warnx("Error getting label chunk!");
2241 on_get_label_chunk_response(start
, end
);
2247 lde_label_list_init(void)
2249 label_chunk_list
= list_new();
2250 label_chunk_list
->del
= lde_del_label_chunk
;
2252 /* get first chunk */
2253 while (lde_get_label_chunk () != 0) {
2254 log_warnx("Error getting first label chunk!");
2260 on_get_label_chunk_response(uint32_t start
, uint32_t end
)
2262 struct label_chunk
*new_label_chunk
;
2264 debug_labels("label chunk assign: %u - %u", start
, end
);
2266 new_label_chunk
= calloc(1, sizeof(struct label_chunk
));
2267 if (!new_label_chunk
) {
2268 log_warn("Error trying to allocate label chunk %u - %u", start
, end
);
2272 new_label_chunk
->start
= start
;
2273 new_label_chunk
->end
= end
;
2274 new_label_chunk
->used_mask
= 0;
2276 listnode_add(label_chunk_list
, (void *)new_label_chunk
);
2278 /* let's update current if needed */
2279 if (!current_label_chunk
)
2280 current_label_chunk
= listtail(label_chunk_list
);
2284 lde_free_label(uint32_t label
)
2286 struct listnode
*node
;
2287 struct label_chunk
*label_chunk
;
2290 for (ALL_LIST_ELEMENTS_RO(label_chunk_list
, node
, label_chunk
)) {
2291 if (label
<= label_chunk
->end
&& label
>= label_chunk
->start
) {
2292 pos
= 1ULL << (label
- label_chunk
->start
);
2293 label_chunk
->used_mask
&= ~pos
;
2294 /* if nobody is using this chunk and it's not current_label_chunk, then free it */
2295 if (!label_chunk
->used_mask
&& (current_label_chunk
!= node
)) {
2296 if (lde_release_label_chunk(label_chunk
->start
, label_chunk
->end
) != 0)
2297 log_warnx("%s: Error releasing label chunk!", __func__
);
2299 listnode_delete(label_chunk_list
, label_chunk
);
2300 lde_del_label_chunk(label_chunk
);
2310 lde_get_next_label(void)
2312 struct label_chunk
*label_chunk
;
2315 uint32_t label
= NO_LABEL
;
2317 while (current_label_chunk
) {
2318 label_chunk
= listgetdata(current_label_chunk
);
2322 /* try to get next free label in currently used label chunk */
2323 size
= label_chunk
->end
- label_chunk
->start
+ 1;
2324 for (i
= 0, pos
= 1; i
< size
; i
++, pos
<<= 1) {
2325 if (!(pos
& label_chunk
->used_mask
)) {
2326 label_chunk
->used_mask
|= pos
;
2327 label
= label_chunk
->start
+ i
;
2331 current_label_chunk
= listnextnode(current_label_chunk
);
2335 /* we moved till the last chunk, or were not able to find a label,
2336 so let's ask for another one */
2337 if (!current_label_chunk
||
2338 current_label_chunk
== listtail(label_chunk_list
) ||
2339 label
== NO_LABEL
) {
2340 if (lde_get_label_chunk() != 0)
2341 log_warn("%s: Error getting label chunk!", __func__
);
2349 lde_check_filter_af(int af
, struct ldpd_af_conf
*af_conf
,
2350 const char *filter_name
)
2352 if (strcmp(af_conf
->acl_label_allocate_for
, filter_name
) == 0)
2353 lde_change_allocate_filter(af
);
2354 if ((strcmp(af_conf
->acl_label_advertise_to
, filter_name
) == 0)
2355 || (strcmp(af_conf
->acl_label_advertise_for
, filter_name
) == 0))
2356 lde_change_advertise_filter(af
);
2357 if ((strcmp(af_conf
->acl_label_accept_for
, filter_name
) == 0)
2358 || (strcmp(af_conf
->acl_label_accept_from
, filter_name
) == 0))
2359 lde_change_accept_filter(af
);
2360 if (strcmp(af_conf
->acl_label_expnull_for
, filter_name
) == 0)
2361 lde_change_expnull_for_filter(af
);
2364 void lde_route_update(struct iface
*iface
, int af
)
2367 struct fec_node
*fn
;
2371 /* update label of non-connected routes */
2372 log_debug("update labels for interface %s", iface
->name
);
2373 RB_FOREACH(f
, fec_tree
, &ft
) {
2374 fn
= (struct fec_node
*)f
;
2375 if (IS_MPLS_UNRESERVED_LABEL(fn
->local_label
))
2380 if (fn
->fec
.type
!= FEC_TYPE_IPV4
)
2384 if (fn
->fec
.type
!= FEC_TYPE_IPV6
)
2388 /* unspecified so process both address families */
2392 LIST_FOREACH(fnh
, &fn
->nexthops
, entry
) {
2394 * If connected leave existing label. If LDP
2395 * configured on interface or a static route
2396 * may need new label. If no LDP configured
2397 * treat fec as a connected route
2399 if (fnh
->flags
& F_FEC_NH_CONNECTED
)
2402 if (fnh
->ifindex
!= iface
->ifindex
)
2405 fnh
->flags
&= ~F_FEC_NH_NO_LDP
;
2406 if (IS_MPLS_RESERVED_LABEL(fn
->local_label
)) {
2407 fn
->local_label
= NO_LABEL
;
2408 fn
->local_label
= lde_update_label(fn
);
2409 if (fn
->local_label
!= NO_LABEL
)
2410 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
2411 lde_send_labelmapping(
2417 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
2418 lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END
, ln
->peerid
,
2422 void lde_route_update_release(struct iface
*iface
, int af
)
2426 struct fec_node
*fn
;
2429 /* update label of interfaces no longer running LDP */
2430 log_debug("release all labels for interface %s af %s", iface
->name
,
2431 af
== AF_INET
? "ipv4" : "ipv6");
2432 RB_FOREACH(f
, fec_tree
, &ft
) {
2433 fn
= (struct fec_node
*)f
;
2437 if (fn
->fec
.type
!= FEC_TYPE_IPV4
)
2441 if (fn
->fec
.type
!= FEC_TYPE_IPV6
)
2445 fatalx("lde_route_update_release: unknown af");
2448 if (fn
->local_label
== NO_LABEL
)
2451 LIST_FOREACH(fnh
, &fn
->nexthops
, entry
) {
2453 * If connected leave existing label. If LDP
2454 * removed from interface may need new label
2455 * and would be treated as a connected route
2457 if (fnh
->flags
& F_FEC_NH_CONNECTED
)
2460 if (fnh
->ifindex
!= iface
->ifindex
)
2463 fnh
->flags
|= F_FEC_NH_NO_LDP
;
2464 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
2465 lde_send_labelwithdraw(ln
, fn
, NULL
, NULL
);
2466 lde_free_label(fn
->local_label
);
2467 fn
->local_label
= NO_LABEL
;
2468 fn
->local_label
= lde_update_label(fn
);
2469 if (fn
->local_label
!= NO_LABEL
)
2470 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
2471 lde_send_labelmapping(ln
, fn
, 0);
2475 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
2476 lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END
, ln
->peerid
,
2480 void lde_route_update_release_all(int af
)
2484 struct fec_node
*fn
;
2487 /* remove labels from all interfaces as LDP is no longer running for
2488 * this address family
2490 log_debug("release all labels for address family %s",
2491 af
== AF_INET
? "ipv4" : "ipv6");
2492 RB_FOREACH(f
, fec_tree
, &ft
) {
2493 fn
= (struct fec_node
*)f
;
2496 if (fn
->fec
.type
!= FEC_TYPE_IPV4
)
2500 if (fn
->fec
.type
!= FEC_TYPE_IPV6
)
2504 fatalx("lde_route_update_release: unknown af");
2507 RB_FOREACH(ln
, nbr_tree
, &lde_nbrs
)
2508 lde_send_labelwithdraw(ln
, fn
, NULL
, NULL
);
2510 LIST_FOREACH(fnh
, &fn
->nexthops
, entry
) {
2511 fnh
->flags
|= F_FEC_NH_NO_LDP
;
2512 lde_send_delete_klabel(fn
, fnh
);