2 * IS-IS Rout(e)ing protocol - isis_circuit.h
4 * Copyright (C) 2001,2002 Sampo Saaristo
5 * Tampere University of Technology
6 * Institute of Communications Engineering
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public Licenseas published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
13 * This program is distributed in the hope that it will be useful,but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
18 * You should have received a copy of the GNU General Public License along
19 * with this program; see the file COPYING; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #include <net/ethernet.h>
26 #include <netinet/if_ether.h>
41 #include "lib/northbound_cli.h"
43 #include "isisd/isis_constants.h"
44 #include "isisd/isis_common.h"
45 #include "isisd/isis_flags.h"
46 #include "isisd/isis_circuit.h"
47 #include "isisd/isis_lsp.h"
48 #include "isisd/isis_pdu.h"
49 #include "isisd/isis_network.h"
50 #include "isisd/isis_misc.h"
51 #include "isisd/isis_constants.h"
52 #include "isisd/isis_adjacency.h"
53 #include "isisd/isis_dr.h"
54 #include "isisd/isisd.h"
55 #include "isisd/isis_csm.h"
56 #include "isisd/isis_events.h"
57 #include "isisd/isis_te.h"
58 #include "isisd/isis_mt.h"
59 #include "isisd/isis_errors.h"
60 #include "isisd/isis_tx_queue.h"
61 #include "isisd/isis_nb.h"
63 DEFINE_QOBJ_TYPE(isis_circuit
)
65 DEFINE_HOOK(isis_if_new_hook
, (struct interface
*ifp
), (ifp
))
70 int isis_if_new_hook(struct interface
*);
71 int isis_if_delete_hook(struct interface
*);
73 struct isis_circuit
*isis_circuit_new(void)
75 struct isis_circuit
*circuit
;
78 circuit
= XCALLOC(MTYPE_ISIS_CIRCUIT
, sizeof(struct isis_circuit
));
84 circuit
->is_type
= yang_get_default_enum(
85 "/frr-interface:lib/interface/frr-isisd:isis/circuit-type");
88 circuit
->pad_hellos
= yang_get_default_bool(
89 "/frr-interface:lib/interface/frr-isisd:isis/hello/padding");
90 circuit
->hello_interval
[0] = yang_get_default_uint32(
91 "/frr-interface:lib/interface/frr-isisd:isis/hello/interval/level-1");
92 circuit
->hello_interval
[1] = yang_get_default_uint32(
93 "/frr-interface:lib/interface/frr-isisd:isis/hello/interval/level-2");
94 circuit
->hello_multiplier
[0] = yang_get_default_uint32(
95 "/frr-interface:lib/interface/frr-isisd:isis/hello/multiplier/level-1");
96 circuit
->hello_multiplier
[1] = yang_get_default_uint32(
97 "/frr-interface:lib/interface/frr-isisd:isis/hello/multiplier/level-2");
98 circuit
->csnp_interval
[0] = yang_get_default_uint16(
99 "/frr-interface:lib/interface/frr-isisd:isis/csnp-interval/level-1");
100 circuit
->csnp_interval
[1] = yang_get_default_uint16(
101 "/frr-interface:lib/interface/frr-isisd:isis/csnp-interval/level-2");
102 circuit
->psnp_interval
[0] = yang_get_default_uint16(
103 "/frr-interface:lib/interface/frr-isisd:isis/psnp-interval/level-1");
104 circuit
->psnp_interval
[1] = yang_get_default_uint16(
105 "/frr-interface:lib/interface/frr-isisd:isis/psnp-interval/level-2");
106 circuit
->priority
[0] = yang_get_default_uint8(
107 "/frr-interface:lib/interface/frr-isisd:isis/priority/level-1");
108 circuit
->priority
[1] = yang_get_default_uint8(
109 "/frr-interface:lib/interface/frr-isisd:isis/priority/level-2");
110 circuit
->metric
[0] = yang_get_default_uint32(
111 "/frr-interface:lib/interface/frr-isisd:isis/metric/level-1");
112 circuit
->metric
[1] = yang_get_default_uint32(
113 "/frr-interface:lib/interface/frr-isisd:isis/metric/level-2");
114 circuit
->te_metric
[0] = yang_get_default_uint32(
115 "/frr-interface:lib/interface/frr-isisd:isis/metric/level-1");
116 circuit
->te_metric
[1] = yang_get_default_uint32(
117 "/frr-interface:lib/interface/frr-isisd:isis/metric/level-2");
119 for (i
= 0; i
< 2; i
++) {
120 circuit
->level_arg
[i
].level
= i
+ 1;
121 circuit
->level_arg
[i
].circuit
= circuit
;
124 circuit
->is_type
= IS_LEVEL_1_AND_2
;
126 circuit
->pad_hellos
= 1;
127 for (i
= 0; i
< 2; i
++) {
128 circuit
->hello_interval
[i
] = DEFAULT_HELLO_INTERVAL
;
129 circuit
->hello_multiplier
[i
] = DEFAULT_HELLO_MULTIPLIER
;
130 circuit
->csnp_interval
[i
] = DEFAULT_CSNP_INTERVAL
;
131 circuit
->psnp_interval
[i
] = DEFAULT_PSNP_INTERVAL
;
132 circuit
->priority
[i
] = DEFAULT_PRIORITY
;
133 circuit
->metric
[i
] = DEFAULT_CIRCUIT_METRIC
;
134 circuit
->te_metric
[i
] = DEFAULT_CIRCUIT_METRIC
;
135 circuit
->level_arg
[i
].level
= i
+ 1;
136 circuit
->level_arg
[i
].circuit
= circuit
;
138 #endif /* ifndef FABRICD */
140 circuit_mt_init(circuit
);
142 QOBJ_REG(circuit
, isis_circuit
);
147 void isis_circuit_del(struct isis_circuit
*circuit
)
154 isis_circuit_if_unbind(circuit
, circuit
->interface
);
156 circuit_mt_finish(circuit
);
158 /* and lastly the circuit itself */
159 XFREE(MTYPE_ISIS_CIRCUIT
, circuit
);
164 void isis_circuit_configure(struct isis_circuit
*circuit
,
165 struct isis_area
*area
)
168 circuit
->area
= area
;
171 * Whenever the is-type of an area is changed, the is-type of each
173 * in that area is updated to a non-empty subset of the area is-type.
174 * Inversely, when configuring a new circuit, this property should be
177 if (area
->is_type
!= IS_LEVEL_1_AND_2
)
178 circuit
->is_type
= area
->is_type
;
181 * Add the circuit into area
183 listnode_add(area
->circuit_list
, circuit
);
185 circuit
->idx
= flags_get_index(&area
->flags
);
190 void isis_circuit_deconfigure(struct isis_circuit
*circuit
,
191 struct isis_area
*area
)
193 /* Free the index of SRM and SSN flags */
194 flags_free_index(&area
->flags
, circuit
->idx
);
196 /* Remove circuit from area */
197 assert(circuit
->area
== area
);
198 listnode_delete(area
->circuit_list
, circuit
);
199 circuit
->area
= NULL
;
204 struct isis_circuit
*circuit_lookup_by_ifp(struct interface
*ifp
,
207 struct isis_circuit
*circuit
= NULL
;
208 struct listnode
*node
;
213 for (ALL_LIST_ELEMENTS_RO(list
, node
, circuit
))
214 if (circuit
->interface
== ifp
) {
215 assert(ifp
->info
== circuit
);
222 struct isis_circuit
*circuit_scan_by_ifp(struct interface
*ifp
)
224 struct isis_area
*area
;
225 struct listnode
*node
;
226 struct isis_circuit
*circuit
;
229 return (struct isis_circuit
*)ifp
->info
;
231 if (isis
->area_list
) {
232 for (ALL_LIST_ELEMENTS_RO(isis
->area_list
, node
, area
)) {
234 circuit_lookup_by_ifp(ifp
, area
->circuit_list
);
239 return circuit_lookup_by_ifp(ifp
, isis
->init_circ_list
);
242 void isis_circuit_add_addr(struct isis_circuit
*circuit
,
243 struct connected
*connected
)
245 struct listnode
*node
;
246 struct prefix_ipv4
*ipv4
;
247 #if defined(EXTREME_DEBUG)
248 char buf
[PREFIX2STR_BUFFER
];
250 struct prefix_ipv6
*ipv6
;
252 if (connected
->address
->family
== AF_INET
) {
253 uint32_t addr
= connected
->address
->u
.prefix4
.s_addr
;
255 if (IPV4_NET0(addr
) || IPV4_NET127(addr
) || IN_CLASSD(addr
)
256 || IPV4_LINKLOCAL(addr
))
259 for (ALL_LIST_ELEMENTS_RO(circuit
->ip_addrs
, node
, ipv4
))
260 if (prefix_same((struct prefix
*)ipv4
,
264 ipv4
= prefix_ipv4_new();
265 ipv4
->prefixlen
= connected
->address
->prefixlen
;
266 ipv4
->prefix
= connected
->address
->u
.prefix4
;
267 listnode_add(circuit
->ip_addrs
, ipv4
);
269 /* Update Local IP address parameter if MPLS TE is enable */
270 if (circuit
->ext
&& circuit
->area
271 && IS_MPLS_TE(circuit
->area
->mta
)) {
272 circuit
->ext
->local_addr
.s_addr
= ipv4
->prefix
.s_addr
;
273 SET_SUBTLV(circuit
->ext
, EXT_LOCAL_ADDR
);
277 lsp_regenerate_schedule(circuit
->area
, circuit
->is_type
,
281 prefix2str(connected
->address
, buf
, sizeof(buf
));
282 zlog_debug("Added IP address %s to circuit %s", buf
,
283 circuit
->interface
->name
);
284 #endif /* EXTREME_DEBUG */
286 if (connected
->address
->family
== AF_INET6
) {
287 if (IN6_IS_ADDR_LOOPBACK(&connected
->address
->u
.prefix6
))
290 for (ALL_LIST_ELEMENTS_RO(circuit
->ipv6_link
, node
, ipv6
))
291 if (prefix_same((struct prefix
*)ipv6
,
294 for (ALL_LIST_ELEMENTS_RO(circuit
->ipv6_non_link
, node
, ipv6
))
295 if (prefix_same((struct prefix
*)ipv6
,
299 ipv6
= prefix_ipv6_new();
300 ipv6
->prefixlen
= connected
->address
->prefixlen
;
301 ipv6
->prefix
= connected
->address
->u
.prefix6
;
303 if (IN6_IS_ADDR_LINKLOCAL(&ipv6
->prefix
))
304 listnode_add(circuit
->ipv6_link
, ipv6
);
306 listnode_add(circuit
->ipv6_non_link
, ipv6
);
308 lsp_regenerate_schedule(circuit
->area
, circuit
->is_type
,
312 prefix2str(connected
->address
, buf
, sizeof(buf
));
313 zlog_debug("Added IPv6 address %s to circuit %s", buf
,
314 circuit
->interface
->name
);
315 #endif /* EXTREME_DEBUG */
320 void isis_circuit_del_addr(struct isis_circuit
*circuit
,
321 struct connected
*connected
)
323 struct prefix_ipv4
*ipv4
, *ip
= NULL
;
324 struct listnode
*node
;
325 char buf
[PREFIX2STR_BUFFER
];
326 struct prefix_ipv6
*ipv6
, *ip6
= NULL
;
329 if (connected
->address
->family
== AF_INET
) {
330 ipv4
= prefix_ipv4_new();
331 ipv4
->prefixlen
= connected
->address
->prefixlen
;
332 ipv4
->prefix
= connected
->address
->u
.prefix4
;
334 for (ALL_LIST_ELEMENTS_RO(circuit
->ip_addrs
, node
, ip
))
335 if (prefix_same((struct prefix
*)ip
,
336 (struct prefix
*)ipv4
))
340 listnode_delete(circuit
->ip_addrs
, ip
);
341 prefix_ipv4_free(&ip
);
343 lsp_regenerate_schedule(circuit
->area
,
344 circuit
->is_type
, 0);
346 prefix2str(connected
->address
, buf
, sizeof(buf
));
348 "Nonexistent ip address %s removal attempt from circuit %s",
349 buf
, circuit
->interface
->name
);
350 zlog_warn("Current ip addresses on %s:",
351 circuit
->interface
->name
);
352 for (ALL_LIST_ELEMENTS_RO(circuit
->ip_addrs
, node
,
354 prefix2str(ip
, buf
, sizeof(buf
));
355 zlog_warn(" %s", buf
);
357 zlog_warn("End of addresses");
360 prefix_ipv4_free(&ipv4
);
362 if (connected
->address
->family
== AF_INET6
) {
363 ipv6
= prefix_ipv6_new();
364 ipv6
->prefixlen
= connected
->address
->prefixlen
;
365 ipv6
->prefix
= connected
->address
->u
.prefix6
;
367 if (IN6_IS_ADDR_LINKLOCAL(&ipv6
->prefix
)) {
368 for (ALL_LIST_ELEMENTS_RO(circuit
->ipv6_link
, node
,
370 if (prefix_same((struct prefix
*)ip6
,
371 (struct prefix
*)ipv6
))
375 listnode_delete(circuit
->ipv6_link
, ip6
);
376 prefix_ipv6_free(&ip6
);
380 for (ALL_LIST_ELEMENTS_RO(circuit
->ipv6_non_link
, node
,
382 if (prefix_same((struct prefix
*)ip6
,
383 (struct prefix
*)ipv6
))
387 listnode_delete(circuit
->ipv6_non_link
, ip6
);
388 prefix_ipv6_free(&ip6
);
394 prefix2str(connected
->address
, buf
, sizeof(buf
));
396 "Nonexistent ip address %s removal attempt from circuit %s",
397 buf
, circuit
->interface
->name
);
398 zlog_warn("Current ip addresses on %s:",
399 circuit
->interface
->name
);
400 for (ALL_LIST_ELEMENTS_RO(circuit
->ipv6_link
, node
,
402 prefix2str((struct prefix
*)ip6
, (char *)buf
,
404 zlog_warn(" %s", buf
);
407 for (ALL_LIST_ELEMENTS_RO(circuit
->ipv6_non_link
, node
,
409 prefix2str((struct prefix
*)ip6
, (char *)buf
,
411 zlog_warn(" %s", buf
);
413 zlog_warn("End of addresses");
414 } else if (circuit
->area
)
415 lsp_regenerate_schedule(circuit
->area
, circuit
->is_type
,
418 prefix_ipv6_free(&ipv6
);
423 static uint8_t isis_circuit_id_gen(struct isis
*isis
, struct interface
*ifp
)
425 /* Circuit ids MUST be unique for any broadcast circuits. Otherwise,
426 * Pseudo-Node LSPs cannot be generated correctly.
428 * Currently, allocate one circuit ID for any circuit, limiting the total
429 * numer of circuits IS-IS can run on to 255.
431 * We should revisit this when implementing 3-way adjacencies for p2p, since
432 * we then have extended interface IDs available.
434 uint8_t id
= ifp
->ifindex
;
437 for (i
= 0; i
< 256; i
++) {
438 if (id
&& !_ISIS_CHECK_FLAG(isis
->circuit_ids_used
, id
))
444 zlog_warn("Could not allocate a circuit id for '%s'",
449 _ISIS_SET_FLAG(isis
->circuit_ids_used
, id
);
453 void isis_circuit_if_add(struct isis_circuit
*circuit
, struct interface
*ifp
)
455 struct listnode
*node
, *nnode
;
456 struct connected
*conn
;
458 isis_circuit_if_bind(circuit
, ifp
);
460 if (if_is_broadcast(ifp
)) {
461 if (fabricd
|| circuit
->circ_type_config
== CIRCUIT_T_P2P
)
462 circuit
->circ_type
= CIRCUIT_T_P2P
;
464 circuit
->circ_type
= CIRCUIT_T_BROADCAST
;
465 } else if (if_is_pointopoint(ifp
)) {
466 circuit
->circ_type
= CIRCUIT_T_P2P
;
467 } else if (if_is_loopback(ifp
)) {
468 circuit
->circ_type
= CIRCUIT_T_LOOPBACK
;
469 circuit
->is_passive
= 1;
471 /* It's normal in case of loopback etc. */
473 zlog_debug("isis_circuit_if_add: unsupported media");
474 circuit
->circ_type
= CIRCUIT_T_UNKNOWN
;
477 circuit
->ip_addrs
= list_new();
478 circuit
->ipv6_link
= list_new();
479 circuit
->ipv6_non_link
= list_new();
481 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, conn
))
482 isis_circuit_add_addr(circuit
, conn
);
486 void isis_circuit_if_del(struct isis_circuit
*circuit
, struct interface
*ifp
)
488 struct listnode
*node
, *nnode
;
489 struct connected
*conn
;
491 assert(circuit
->interface
== ifp
);
493 /* destroy addresses */
494 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, conn
))
495 isis_circuit_del_addr(circuit
, conn
);
497 if (circuit
->ip_addrs
) {
498 assert(listcount(circuit
->ip_addrs
) == 0);
499 list_delete(&circuit
->ip_addrs
);
502 if (circuit
->ipv6_link
) {
503 assert(listcount(circuit
->ipv6_link
) == 0);
504 list_delete(&circuit
->ipv6_link
);
507 if (circuit
->ipv6_non_link
) {
508 assert(listcount(circuit
->ipv6_non_link
) == 0);
509 list_delete(&circuit
->ipv6_non_link
);
512 circuit
->circ_type
= CIRCUIT_T_UNKNOWN
;
515 void isis_circuit_if_bind(struct isis_circuit
*circuit
, struct interface
*ifp
)
517 assert(circuit
!= NULL
);
519 if (circuit
->interface
)
520 assert(circuit
->interface
== ifp
);
522 circuit
->interface
= ifp
;
524 assert(ifp
->info
== circuit
);
529 void isis_circuit_if_unbind(struct isis_circuit
*circuit
, struct interface
*ifp
)
531 assert(circuit
!= NULL
);
533 assert(circuit
->interface
== ifp
);
534 assert(ifp
->info
== circuit
);
535 circuit
->interface
= NULL
;
539 static void isis_circuit_update_all_srmflags(struct isis_circuit
*circuit
,
542 struct isis_area
*area
;
543 struct isis_lsp
*lsp
;
547 area
= circuit
->area
;
549 for (level
= ISIS_LEVEL1
; level
<= ISIS_LEVEL2
; level
++) {
550 if (!(level
& circuit
->is_type
))
553 if (!lspdb_count(&area
->lspdb
[level
- 1]))
556 frr_each (lspdb
, &area
->lspdb
[level
- 1], lsp
) {
558 isis_tx_queue_add(circuit
->tx_queue
, lsp
,
561 isis_tx_queue_del(circuit
->tx_queue
, lsp
);
567 size_t isis_circuit_pdu_size(struct isis_circuit
*circuit
)
569 return ISO_MTU(circuit
);
572 void isis_circuit_stream(struct isis_circuit
*circuit
, struct stream
**stream
)
574 size_t stream_size
= isis_circuit_pdu_size(circuit
);
577 *stream
= stream_new(stream_size
);
579 if (STREAM_SIZE(*stream
) != stream_size
)
580 stream_resize_inplace(stream
, stream_size
);
581 stream_reset(*stream
);
585 void isis_circuit_prepare(struct isis_circuit
*circuit
)
587 #if ISIS_METHOD != ISIS_METHOD_DLPI
588 thread_add_read(master
, isis_receive
, circuit
, circuit
->fd
,
591 thread_add_timer_msec(master
, isis_receive
, circuit
,
592 listcount(circuit
->area
->circuit_list
) * 100,
597 int isis_circuit_up(struct isis_circuit
*circuit
)
601 /* Set the flags for all the lsps of the circuit. */
602 isis_circuit_update_all_srmflags(circuit
, 1);
604 if (circuit
->state
== C_STATE_UP
)
607 if (circuit
->is_passive
)
610 if (circuit
->area
->lsp_mtu
> isis_circuit_pdu_size(circuit
)) {
613 "Interface MTU %zu on %s is too low to support area lsp mtu %u!",
614 isis_circuit_pdu_size(circuit
),
615 circuit
->interface
->name
, circuit
->area
->lsp_mtu
);
616 isis_circuit_update_all_srmflags(circuit
, 0);
620 if (circuit
->circ_type
== CIRCUIT_T_BROADCAST
) {
621 circuit
->circuit_id
= isis_circuit_id_gen(isis
, circuit
->interface
);
622 if (!circuit
->circuit_id
) {
625 "There are already 255 broadcast circuits active!");
630 * Get the Hardware Address
632 if (circuit
->interface
->hw_addr_len
!= ETH_ALEN
) {
633 zlog_warn("unsupported link layer");
635 memcpy(circuit
->u
.bc
.snpa
, circuit
->interface
->hw_addr
,
639 zlog_debug("isis_circuit_if_add: if_id %d, isomtu %d snpa %s",
640 circuit
->interface
->ifindex
, ISO_MTU(circuit
),
641 snpa_print(circuit
->u
.bc
.snpa
));
642 #endif /* EXTREME_DEBUG */
644 circuit
->u
.bc
.adjdb
[0] = list_new();
645 circuit
->u
.bc
.adjdb
[1] = list_new();
648 * ISO 10589 - 8.4.1 Enabling of broadcast circuits
651 /* initilizing the hello sending threads
655 /* 8.4.1 a) commence sending of IIH PDUs */
657 for (int level
= ISIS_LEVEL1
; level
<= ISIS_LEVEL2
; level
++) {
658 if (!(circuit
->is_type
& level
))
661 send_hello_sched(circuit
, level
, TRIGGERED_IIH_DELAY
);
662 circuit
->u
.bc
.lan_neighs
[level
- 1] = list_new();
664 thread_add_timer(master
, isis_run_dr
,
665 &circuit
->level_arg
[level
- 1],
666 2 * circuit
->hello_interval
[level
- 1],
667 &circuit
->u
.bc
.t_run_dr
[level
- 1]);
670 /* 8.4.1 b) FIXME: solicit ES - 8.4.6 */
671 /* 8.4.1 c) FIXME: listen for ESH PDUs */
672 } else if (circuit
->circ_type
== CIRCUIT_T_P2P
) {
673 /* initializing the hello send threads
676 circuit
->u
.p2p
.neighbor
= NULL
;
677 send_hello_sched(circuit
, 0, TRIGGERED_IIH_DELAY
);
680 /* initializing PSNP timers */
681 if (circuit
->is_type
& IS_LEVEL_1
)
683 master
, send_l1_psnp
, circuit
,
684 isis_jitter(circuit
->psnp_interval
[0], PSNP_JITTER
),
685 &circuit
->t_send_psnp
[0]);
687 if (circuit
->is_type
& IS_LEVEL_2
)
689 master
, send_l2_psnp
, circuit
,
690 isis_jitter(circuit
->psnp_interval
[1], PSNP_JITTER
),
691 &circuit
->t_send_psnp
[1]);
693 /* unified init for circuits; ignore warnings below this level */
694 retv
= isis_sock_init(circuit
);
695 if (retv
!= ISIS_OK
) {
696 isis_circuit_down(circuit
);
700 /* initialize the circuit streams after opening connection */
701 isis_circuit_stream(circuit
, &circuit
->rcv_stream
);
702 isis_circuit_stream(circuit
, &circuit
->snd_stream
);
704 isis_circuit_prepare(circuit
);
706 circuit
->tx_queue
= isis_tx_queue_new(circuit
, send_lsp
);
709 /* send northbound notification */
710 isis_notif_if_state_change(circuit
, false);
711 #endif /* ifndef FABRICD */
716 void isis_circuit_down(struct isis_circuit
*circuit
)
719 /* send northbound notification */
720 isis_notif_if_state_change(circuit
, true);
721 #endif /* ifndef FABRICD */
723 /* log adjacency changes if configured to do so */
724 if (circuit
->area
->log_adj_changes
) {
725 struct isis_adjacency
*adj
= NULL
;
726 if (circuit
->circ_type
== CIRCUIT_T_P2P
) {
727 adj
= circuit
->u
.p2p
.neighbor
;
730 adj
, adj
->adj_state
, ISIS_ADJ_DOWN
,
731 "circuit is being brought down");
732 } else if (circuit
->circ_type
== CIRCUIT_T_BROADCAST
) {
733 struct list
*adj_list
;
734 struct listnode
*node
;
735 if (circuit
->u
.bc
.adjdb
[0]) {
736 adj_list
= list_new();
737 isis_adj_build_up_list(circuit
->u
.bc
.adjdb
[0],
739 for (ALL_LIST_ELEMENTS_RO(adj_list
, node
, adj
))
743 "circuit is being brought down");
744 list_delete(&adj_list
);
746 if (circuit
->u
.bc
.adjdb
[1]) {
747 adj_list
= list_new();
748 isis_adj_build_up_list(circuit
->u
.bc
.adjdb
[1],
750 for (ALL_LIST_ELEMENTS_RO(adj_list
, node
, adj
))
754 "circuit is being brought down");
755 list_delete(&adj_list
);
760 /* Clear the flags for all the lsps of the circuit. */
761 isis_circuit_update_all_srmflags(circuit
, 0);
763 if (circuit
->circ_type
== CIRCUIT_T_BROADCAST
) {
764 /* destroy neighbour lists */
765 if (circuit
->u
.bc
.lan_neighs
[0]) {
766 list_delete(&circuit
->u
.bc
.lan_neighs
[0]);
767 circuit
->u
.bc
.lan_neighs
[0] = NULL
;
769 if (circuit
->u
.bc
.lan_neighs
[1]) {
770 list_delete(&circuit
->u
.bc
.lan_neighs
[1]);
771 circuit
->u
.bc
.lan_neighs
[1] = NULL
;
773 /* destroy adjacency databases */
774 if (circuit
->u
.bc
.adjdb
[0]) {
775 circuit
->u
.bc
.adjdb
[0]->del
= isis_delete_adj
;
776 list_delete(&circuit
->u
.bc
.adjdb
[0]);
777 circuit
->u
.bc
.adjdb
[0] = NULL
;
779 if (circuit
->u
.bc
.adjdb
[1]) {
780 circuit
->u
.bc
.adjdb
[1]->del
= isis_delete_adj
;
781 list_delete(&circuit
->u
.bc
.adjdb
[1]);
782 circuit
->u
.bc
.adjdb
[1] = NULL
;
784 if (circuit
->u
.bc
.is_dr
[0]) {
785 isis_dr_resign(circuit
, 1);
786 circuit
->u
.bc
.is_dr
[0] = 0;
788 memset(circuit
->u
.bc
.l1_desig_is
, 0, ISIS_SYS_ID_LEN
+ 1);
789 if (circuit
->u
.bc
.is_dr
[1]) {
790 isis_dr_resign(circuit
, 2);
791 circuit
->u
.bc
.is_dr
[1] = 0;
793 memset(circuit
->u
.bc
.l2_desig_is
, 0, ISIS_SYS_ID_LEN
+ 1);
794 memset(circuit
->u
.bc
.snpa
, 0, ETH_ALEN
);
796 THREAD_TIMER_OFF(circuit
->u
.bc
.t_send_lan_hello
[0]);
797 THREAD_TIMER_OFF(circuit
->u
.bc
.t_send_lan_hello
[1]);
798 THREAD_TIMER_OFF(circuit
->u
.bc
.t_run_dr
[0]);
799 THREAD_TIMER_OFF(circuit
->u
.bc
.t_run_dr
[1]);
800 THREAD_TIMER_OFF(circuit
->u
.bc
.t_refresh_pseudo_lsp
[0]);
801 THREAD_TIMER_OFF(circuit
->u
.bc
.t_refresh_pseudo_lsp
[1]);
802 circuit
->lsp_regenerate_pending
[0] = 0;
803 circuit
->lsp_regenerate_pending
[1] = 0;
805 _ISIS_CLEAR_FLAG(isis
->circuit_ids_used
, circuit
->circuit_id
);
806 circuit
->circuit_id
= 0;
807 } else if (circuit
->circ_type
== CIRCUIT_T_P2P
) {
808 isis_delete_adj(circuit
->u
.p2p
.neighbor
);
809 circuit
->u
.p2p
.neighbor
= NULL
;
810 THREAD_TIMER_OFF(circuit
->u
.p2p
.t_send_p2p_hello
);
813 /* Cancel all active threads */
814 THREAD_TIMER_OFF(circuit
->t_send_csnp
[0]);
815 THREAD_TIMER_OFF(circuit
->t_send_csnp
[1]);
816 THREAD_TIMER_OFF(circuit
->t_send_psnp
[0]);
817 THREAD_TIMER_OFF(circuit
->t_send_psnp
[1]);
818 THREAD_OFF(circuit
->t_read
);
820 if (circuit
->tx_queue
) {
821 isis_tx_queue_free(circuit
->tx_queue
);
822 circuit
->tx_queue
= NULL
;
825 /* send one gratuitous hello to spead up convergence */
826 if (circuit
->state
== C_STATE_UP
) {
827 if (circuit
->is_type
& IS_LEVEL_1
)
828 send_hello(circuit
, IS_LEVEL_1
);
829 if (circuit
->is_type
& IS_LEVEL_2
)
830 send_hello(circuit
, IS_LEVEL_2
);
833 circuit
->upadjcount
[0] = 0;
834 circuit
->upadjcount
[1] = 0;
836 /* close the socket */
842 if (circuit
->rcv_stream
!= NULL
) {
843 stream_free(circuit
->rcv_stream
);
844 circuit
->rcv_stream
= NULL
;
847 if (circuit
->snd_stream
!= NULL
) {
848 stream_free(circuit
->snd_stream
);
849 circuit
->snd_stream
= NULL
;
852 thread_cancel_event(master
, circuit
);
857 void circuit_update_nlpids(struct isis_circuit
*circuit
)
859 circuit
->nlpids
.count
= 0;
861 if (circuit
->ip_router
) {
862 circuit
->nlpids
.nlpids
[0] = NLPID_IP
;
863 circuit
->nlpids
.count
++;
865 if (circuit
->ipv6_router
) {
866 circuit
->nlpids
.nlpids
[circuit
->nlpids
.count
] = NLPID_IPV6
;
867 circuit
->nlpids
.count
++;
872 void isis_circuit_print_vty(struct isis_circuit
*circuit
, struct vty
*vty
,
875 if (detail
== ISIS_UI_LEVEL_BRIEF
) {
876 vty_out(vty
, " %-12s", circuit
->interface
->name
);
877 vty_out(vty
, "0x%-7x", circuit
->circuit_id
);
878 vty_out(vty
, "%-9s", circuit_state2string(circuit
->state
));
879 vty_out(vty
, "%-9s", circuit_type2string(circuit
->circ_type
));
880 vty_out(vty
, "%-9s", circuit_t2string(circuit
->is_type
));
884 if (detail
== ISIS_UI_LEVEL_DETAIL
) {
885 struct listnode
*node
;
886 struct prefix
*ip_addr
;
889 vty_out(vty
, " Interface: %s", circuit
->interface
->name
);
890 vty_out(vty
, ", State: %s",
891 circuit_state2string(circuit
->state
));
892 if (circuit
->is_passive
)
893 vty_out(vty
, ", Passive");
895 vty_out(vty
, ", Active");
896 vty_out(vty
, ", Circuit Id: 0x%x", circuit
->circuit_id
);
898 vty_out(vty
, " Type: %s",
899 circuit_type2string(circuit
->circ_type
));
900 vty_out(vty
, ", Level: %s", circuit_t2string(circuit
->is_type
));
901 if (circuit
->circ_type
== CIRCUIT_T_BROADCAST
)
902 vty_out(vty
, ", SNPA: %-10s",
903 snpa_print(circuit
->u
.bc
.snpa
));
905 if (circuit
->is_type
& IS_LEVEL_1
) {
906 vty_out(vty
, " Level-1 Information:\n");
907 if (circuit
->area
->newmetric
)
908 vty_out(vty
, " Metric: %d",
909 circuit
->te_metric
[0]);
911 vty_out(vty
, " Metric: %d",
913 if (!circuit
->is_passive
) {
914 vty_out(vty
, ", Active neighbors: %u\n",
915 circuit
->upadjcount
[0]);
917 " Hello interval: %u, "
918 "Holddown count: %u %s\n",
919 circuit
->hello_interval
[0],
920 circuit
->hello_multiplier
[0],
921 (circuit
->pad_hellos
? "(pad)"
924 " CNSP interval: %u, "
925 "PSNP interval: %u\n",
926 circuit
->csnp_interval
[0],
927 circuit
->psnp_interval
[0]);
928 if (circuit
->circ_type
== CIRCUIT_T_BROADCAST
)
930 " LAN Priority: %u, %s\n",
931 circuit
->priority
[0],
932 (circuit
->u
.bc
.is_dr
[0]
939 if (circuit
->is_type
& IS_LEVEL_2
) {
940 vty_out(vty
, " Level-2 Information:\n");
941 if (circuit
->area
->newmetric
)
942 vty_out(vty
, " Metric: %d",
943 circuit
->te_metric
[1]);
945 vty_out(vty
, " Metric: %d",
947 if (!circuit
->is_passive
) {
948 vty_out(vty
, ", Active neighbors: %u\n",
949 circuit
->upadjcount
[1]);
951 " Hello interval: %u, "
952 "Holddown count: %u %s\n",
953 circuit
->hello_interval
[1],
954 circuit
->hello_multiplier
[1],
955 (circuit
->pad_hellos
? "(pad)"
958 " CNSP interval: %u, "
959 "PSNP interval: %u\n",
960 circuit
->csnp_interval
[1],
961 circuit
->psnp_interval
[1]);
962 if (circuit
->circ_type
== CIRCUIT_T_BROADCAST
)
964 " LAN Priority: %u, %s\n",
965 circuit
->priority
[1],
966 (circuit
->u
.bc
.is_dr
[1]
973 if (circuit
->ip_addrs
&& listcount(circuit
->ip_addrs
) > 0) {
974 vty_out(vty
, " IP Prefix(es):\n");
975 for (ALL_LIST_ELEMENTS_RO(circuit
->ip_addrs
, node
,
977 prefix2str(ip_addr
, buf
, sizeof(buf
));
978 vty_out(vty
, " %s\n", buf
);
981 if (circuit
->ipv6_link
&& listcount(circuit
->ipv6_link
) > 0) {
982 vty_out(vty
, " IPv6 Link-Locals:\n");
983 for (ALL_LIST_ELEMENTS_RO(circuit
->ipv6_link
, node
,
985 prefix2str(ip_addr
, (char *)buf
, BUFSIZ
);
986 vty_out(vty
, " %s\n", buf
);
989 if (circuit
->ipv6_non_link
990 && listcount(circuit
->ipv6_non_link
) > 0) {
991 vty_out(vty
, " IPv6 Prefixes:\n");
992 for (ALL_LIST_ELEMENTS_RO(circuit
->ipv6_non_link
, node
,
994 prefix2str(ip_addr
, (char *)buf
, BUFSIZ
);
995 vty_out(vty
, " %s\n", buf
);
1005 DEFINE_HOOK(isis_circuit_config_write
,
1006 (struct isis_circuit
*circuit
, struct vty
*vty
),
1009 static int isis_interface_config_write(struct vty
*vty
)
1011 struct vrf
*vrf
= vrf_lookup_by_id(VRF_DEFAULT
);
1013 struct listnode
*node
;
1014 struct interface
*ifp
;
1015 struct isis_area
*area
;
1016 struct isis_circuit
*circuit
;
1019 FOR_ALL_INTERFACES (vrf
, ifp
) {
1021 vty_frame(vty
, "interface %s\n", ifp
->name
);
1025 vty_out(vty
, " description %s\n", ifp
->desc
);
1029 for (ALL_LIST_ELEMENTS_RO(isis
->area_list
, node
, area
)) {
1031 circuit_lookup_by_ifp(ifp
, area
->circuit_list
);
1032 if (circuit
== NULL
)
1034 if (circuit
->ip_router
) {
1035 vty_out(vty
, " ip router " PROTO_NAME
" %s\n",
1039 if (circuit
->is_passive
) {
1040 vty_out(vty
, " " PROTO_NAME
" passive\n");
1043 if (circuit
->circ_type_config
== CIRCUIT_T_P2P
) {
1044 vty_out(vty
, " " PROTO_NAME
" network point-to-point\n");
1047 if (circuit
->ipv6_router
) {
1048 vty_out(vty
, " ipv6 router " PROTO_NAME
" %s\n",
1053 /* ISIS - circuit type */
1055 if (circuit
->is_type
== IS_LEVEL_1
) {
1056 vty_out(vty
, " " PROTO_NAME
" circuit-type level-1\n");
1059 if (circuit
->is_type
== IS_LEVEL_2
) {
1061 " " PROTO_NAME
" circuit-type level-2-only\n");
1067 /* ISIS - CSNP interval */
1068 if (circuit
->csnp_interval
[0]
1069 == circuit
->csnp_interval
[1]) {
1070 if (circuit
->csnp_interval
[0]
1071 != DEFAULT_CSNP_INTERVAL
) {
1072 vty_out(vty
, " " PROTO_NAME
" csnp-interval %d\n",
1073 circuit
->csnp_interval
[0]);
1077 for (i
= 0; i
< 2; i
++) {
1078 if (circuit
->csnp_interval
[i
]
1079 != DEFAULT_CSNP_INTERVAL
) {
1081 " " PROTO_NAME
" csnp-interval %d level-%d\n",
1082 circuit
->csnp_interval
1090 /* ISIS - PSNP interval */
1091 if (circuit
->psnp_interval
[0]
1092 == circuit
->psnp_interval
[1]) {
1093 if (circuit
->psnp_interval
[0]
1094 != DEFAULT_PSNP_INTERVAL
) {
1095 vty_out(vty
, " " PROTO_NAME
" psnp-interval %d\n",
1096 circuit
->psnp_interval
[0]);
1100 for (i
= 0; i
< 2; i
++) {
1101 if (circuit
->psnp_interval
[i
]
1102 != DEFAULT_PSNP_INTERVAL
) {
1104 " " PROTO_NAME
" psnp-interval %d level-%d\n",
1105 circuit
->psnp_interval
1113 /* ISIS - Hello padding - Defaults to true so only
1114 * display if false */
1115 if (circuit
->pad_hellos
== 0) {
1116 vty_out(vty
, " no " PROTO_NAME
" hello padding\n");
1120 if (circuit
->disable_threeway_adj
) {
1121 vty_out(vty
, " no isis three-way-handshake\n");
1125 /* ISIS - Hello interval */
1126 if (circuit
->hello_interval
[0]
1127 == circuit
->hello_interval
[1]) {
1128 if (circuit
->hello_interval
[0]
1129 != DEFAULT_HELLO_INTERVAL
) {
1131 " " PROTO_NAME
" hello-interval %d\n",
1132 circuit
->hello_interval
[0]);
1136 for (i
= 0; i
< 2; i
++) {
1137 if (circuit
->hello_interval
[i
]
1138 != DEFAULT_HELLO_INTERVAL
) {
1140 " " PROTO_NAME
" hello-interval %d level-%d\n",
1141 circuit
->hello_interval
1149 /* ISIS - Hello Multiplier */
1150 if (circuit
->hello_multiplier
[0]
1151 == circuit
->hello_multiplier
[1]) {
1152 if (circuit
->hello_multiplier
[0]
1153 != DEFAULT_HELLO_MULTIPLIER
) {
1155 " " PROTO_NAME
" hello-multiplier %d\n",
1156 circuit
->hello_multiplier
[0]);
1160 for (i
= 0; i
< 2; i
++) {
1161 if (circuit
->hello_multiplier
[i
]
1162 != DEFAULT_HELLO_MULTIPLIER
) {
1164 " " PROTO_NAME
" hello-multiplier %d level-%d\n",
1165 circuit
->hello_multiplier
1173 /* ISIS - Priority */
1174 if (circuit
->priority
[0] == circuit
->priority
[1]) {
1175 if (circuit
->priority
[0] != DEFAULT_PRIORITY
) {
1176 vty_out(vty
, " " PROTO_NAME
" priority %d\n",
1177 circuit
->priority
[0]);
1181 for (i
= 0; i
< 2; i
++) {
1182 if (circuit
->priority
[i
]
1183 != DEFAULT_PRIORITY
) {
1185 " " PROTO_NAME
" priority %d level-%d\n",
1186 circuit
->priority
[i
],
1194 if (circuit
->te_metric
[0] == circuit
->te_metric
[1]) {
1195 if (circuit
->te_metric
[0]
1196 != DEFAULT_CIRCUIT_METRIC
) {
1197 vty_out(vty
, " " PROTO_NAME
" metric %d\n",
1198 circuit
->te_metric
[0]);
1202 for (i
= 0; i
< 2; i
++) {
1203 if (circuit
->te_metric
[i
]
1204 != DEFAULT_CIRCUIT_METRIC
) {
1206 " " PROTO_NAME
" metric %d level-%d\n",
1207 circuit
->te_metric
[i
],
1213 if (circuit
->passwd
.type
== ISIS_PASSWD_TYPE_HMAC_MD5
) {
1214 vty_out(vty
, " " PROTO_NAME
" password md5 %s\n",
1215 circuit
->passwd
.passwd
);
1217 } else if (circuit
->passwd
.type
1218 == ISIS_PASSWD_TYPE_CLEARTXT
) {
1219 vty_out(vty
, " " PROTO_NAME
" password clear %s\n",
1220 circuit
->passwd
.passwd
);
1223 write
+= hook_call(isis_circuit_config_write
,
1226 vty_endframe(vty
, "!\n");
1232 static int isis_interface_config_write(struct vty
*vty
)
1234 struct vrf
*vrf
= vrf_lookup_by_id(VRF_DEFAULT
);
1236 struct interface
*ifp
;
1237 struct lyd_node
*dnode
;
1239 FOR_ALL_INTERFACES (vrf
, ifp
) {
1240 dnode
= yang_dnode_get(
1241 running_config
->dnode
,
1242 "/frr-interface:lib/interface[name='%s'][vrf='%s']",
1243 ifp
->name
, vrf
->name
);
1248 nb_cli_show_dnode_cmds(vty
, dnode
, false);
1252 #endif /* ifdef FABRICD */
1254 struct isis_circuit
*isis_circuit_create(struct isis_area
*area
,
1255 struct interface
*ifp
)
1257 struct isis_circuit
*circuit
= circuit_scan_by_ifp(ifp
);
1258 if (circuit
&& circuit
->area
)
1260 circuit
= isis_csm_state_change(ISIS_ENABLE
, circuit
, area
);
1261 if (circuit
->state
!= C_STATE_CONF
&& circuit
->state
!= C_STATE_UP
)
1263 isis_circuit_if_bind(circuit
, ifp
);
1264 if (circuit
->area
->mta
&& circuit
->area
->mta
->status
)
1265 isis_link_params_update(circuit
, ifp
);
1269 void isis_circuit_af_set(struct isis_circuit
*circuit
, bool ip_router
,
1272 struct isis_area
*area
= circuit
->area
;
1273 int old_ipr
= circuit
->ip_router
;
1274 int old_ipv6r
= circuit
->ipv6_router
;
1276 /* is there something to do? */
1277 if (old_ipr
== ip_router
&& old_ipv6r
== ipv6_router
)
1280 circuit
->ip_router
= ip_router
;
1281 circuit
->ipv6_router
= ipv6_router
;
1282 circuit_update_nlpids(circuit
);
1284 /* the area should always be there if we get here, but in the past
1285 * there were corner cases where the area was NULL (e.g. because the
1286 * circuit was deconfigured following a validation error). Do not
1287 * segfault if this happens again.
1290 zlog_err("%s: NULL area for circuit %u", __func__
,
1291 circuit
->circuit_id
);
1295 area
->ip_circuits
+= ip_router
- old_ipr
;
1296 area
->ipv6_circuits
+= ipv6_router
- old_ipv6r
;
1298 if (!ip_router
&& !ipv6_router
)
1299 isis_csm_state_change(ISIS_DISABLE
, circuit
, area
);
1301 lsp_regenerate_schedule(area
, circuit
->is_type
, 0);
1304 ferr_r
isis_circuit_passive_set(struct isis_circuit
*circuit
, bool passive
)
1306 if (circuit
->is_passive
== passive
)
1309 if (if_is_loopback(circuit
->interface
) && !passive
)
1310 return ferr_cfg_invalid("loopback is always passive");
1312 if (circuit
->state
!= C_STATE_UP
) {
1313 circuit
->is_passive
= passive
;
1315 struct isis_area
*area
= circuit
->area
;
1316 isis_csm_state_change(ISIS_DISABLE
, circuit
, area
);
1317 circuit
->is_passive
= passive
;
1318 isis_csm_state_change(ISIS_ENABLE
, circuit
, area
);
1324 ferr_r
isis_circuit_metric_set(struct isis_circuit
*circuit
, int level
,
1327 assert(level
== IS_LEVEL_1
|| level
== IS_LEVEL_2
);
1328 if (metric
> MAX_WIDE_LINK_METRIC
)
1329 return ferr_cfg_invalid("metric %d too large for wide metric",
1331 if (circuit
->area
&& circuit
->area
->oldmetric
1332 && metric
> MAX_NARROW_LINK_METRIC
)
1333 return ferr_cfg_invalid("metric %d too large for narrow metric",
1336 circuit
->te_metric
[level
- 1] = metric
;
1337 circuit
->metric
[level
- 1] = metric
;
1340 lsp_regenerate_schedule(circuit
->area
, level
, 0);
1344 ferr_r
isis_circuit_passwd_unset(struct isis_circuit
*circuit
)
1346 memset(&circuit
->passwd
, 0, sizeof(circuit
->passwd
));
1350 ferr_r
isis_circuit_passwd_set(struct isis_circuit
*circuit
,
1351 uint8_t passwd_type
, const char *passwd
)
1356 return ferr_code_bug("no circuit password given");
1358 len
= strlen(passwd
);
1360 return ferr_code_bug(
1361 "circuit password too long (max 254 chars)");
1363 circuit
->passwd
.len
= len
;
1364 strlcpy((char *)circuit
->passwd
.passwd
, passwd
,
1365 sizeof(circuit
->passwd
.passwd
));
1366 circuit
->passwd
.type
= passwd_type
;
1370 ferr_r
isis_circuit_passwd_cleartext_set(struct isis_circuit
*circuit
,
1373 return isis_circuit_passwd_set(circuit
, ISIS_PASSWD_TYPE_CLEARTXT
,
1377 ferr_r
isis_circuit_passwd_hmac_md5_set(struct isis_circuit
*circuit
,
1380 return isis_circuit_passwd_set(circuit
, ISIS_PASSWD_TYPE_HMAC_MD5
,
1384 struct cmd_node interface_node
= {
1385 .name
= "interface",
1386 .node
= INTERFACE_NODE
,
1387 .parent_node
= CONFIG_NODE
,
1388 .prompt
= "%s(config-if)# ",
1389 .config_write
= isis_interface_config_write
,
1392 void isis_circuit_circ_type_set(struct isis_circuit
*circuit
, int circ_type
)
1394 if (circuit
->circ_type
== circ_type
)
1397 if (circuit
->state
!= C_STATE_UP
) {
1398 circuit
->circ_type
= circ_type
;
1399 circuit
->circ_type_config
= circ_type
;
1401 struct isis_area
*area
= circuit
->area
;
1403 isis_csm_state_change(ISIS_DISABLE
, circuit
, area
);
1404 circuit
->circ_type
= circ_type
;
1405 circuit
->circ_type_config
= circ_type
;
1406 isis_csm_state_change(ISIS_ENABLE
, circuit
, area
);
1410 int isis_circuit_mt_enabled_set(struct isis_circuit
*circuit
, uint16_t mtid
,
1413 struct isis_circuit_mt_setting
*setting
;
1415 setting
= circuit_get_mt_setting(circuit
, mtid
);
1416 if (setting
->enabled
!= enabled
) {
1417 setting
->enabled
= enabled
;
1418 lsp_regenerate_schedule(circuit
->area
, IS_LEVEL_1
| IS_LEVEL_2
,
1425 int isis_if_new_hook(struct interface
*ifp
)
1430 int isis_if_delete_hook(struct interface
*ifp
)
1432 struct isis_circuit
*circuit
;
1433 /* Clean up the circuit data */
1434 if (ifp
&& ifp
->info
) {
1435 circuit
= ifp
->info
;
1436 isis_csm_state_change(IF_DOWN_FROM_Z
, circuit
, circuit
->area
);
1442 static int isis_ifp_create(struct interface
*ifp
)
1444 if (if_is_operative(ifp
))
1445 isis_csm_state_change(IF_UP_FROM_Z
, circuit_scan_by_ifp(ifp
),
1448 hook_call(isis_if_new_hook
, ifp
);
1453 static int isis_ifp_up(struct interface
*ifp
)
1455 isis_csm_state_change(IF_UP_FROM_Z
, circuit_scan_by_ifp(ifp
), ifp
);
1460 static int isis_ifp_down(struct interface
*ifp
)
1462 struct isis_circuit
*circuit
;
1464 circuit
= isis_csm_state_change(IF_DOWN_FROM_Z
,
1465 circuit_scan_by_ifp(ifp
), ifp
);
1467 SET_FLAG(circuit
->flags
, ISIS_CIRCUIT_FLAPPED_AFTER_SPF
);
1472 static int isis_ifp_destroy(struct interface
*ifp
)
1474 if (if_is_operative(ifp
))
1475 zlog_warn("Zebra: got delete of %s, but interface is still up",
1478 isis_csm_state_change(IF_DOWN_FROM_Z
, circuit_scan_by_ifp(ifp
), ifp
);
1480 /* Cannot call if_delete because we should retain the pseudo interface
1481 in case there is configuration info attached to it. */
1482 if_delete_retain(ifp
);
1487 void isis_circuit_init(void)
1489 /* Initialize Zebra interface data structure */
1490 hook_register_prio(if_add
, 0, isis_if_new_hook
);
1491 hook_register_prio(if_del
, 0, isis_if_delete_hook
);
1493 /* Install interface node */
1494 install_node(&interface_node
);
1496 if_zapi_callbacks(isis_ifp_create
, isis_ifp_up
,
1497 isis_ifp_down
, isis_ifp_destroy
);