3 * Copyright (C) 2008 Everton da Silva Marques
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; see the file COPYING; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
34 #include "pim_zebra.h"
35 #include "pim_iface.h"
41 #include "pim_zlookup.h"
42 #include "pim_ifchannel.h"
44 #include "pim_igmpv3.h"
45 #include "pim_jp_agg.h"
48 #include "pim_vxlan.h"
51 #undef PIM_DEBUG_IFADDR_DUMP
52 #define PIM_DEBUG_IFADDR_DUMP
54 struct zclient
*zclient
;
57 /* Router-id update message from zebra. */
58 static int pim_router_id_update_zebra(ZAPI_CALLBACK_ARGS
)
60 struct prefix router_id
;
62 zebra_router_id_update_read(zclient
->ibuf
, &router_id
);
67 static int pim_zebra_interface_vrf_update(ZAPI_CALLBACK_ARGS
)
69 struct interface
*ifp
;
72 ifp
= zebra_interface_vrf_update_read(zclient
->ibuf
, vrf_id
,
78 zlog_debug("%s: %s updating from %u to %u",
80 ifp
->name
, vrf_id
, new_vrf_id
);
82 if_update_to_new_vrf(ifp
, new_vrf_id
);
87 #ifdef PIM_DEBUG_IFADDR_DUMP
88 static void dump_if_address(struct interface
*ifp
)
90 struct connected
*ifc
;
91 struct listnode
*node
;
93 zlog_debug("%s %s: interface %s addresses:", __FILE__
,
94 __PRETTY_FUNCTION__
, ifp
->name
);
96 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, ifc
)) {
97 struct prefix
*p
= ifc
->address
;
99 if (p
->family
!= AF_INET
)
102 zlog_debug("%s %s: interface %s address %s %s", __FILE__
,
103 __PRETTY_FUNCTION__
, ifp
->name
,
104 inet_ntoa(p
->u
.prefix4
),
105 CHECK_FLAG(ifc
->flags
, ZEBRA_IFA_SECONDARY
)
112 static int pim_zebra_if_address_add(ZAPI_CALLBACK_ARGS
)
116 struct pim_interface
*pim_ifp
;
117 struct pim_instance
*pim
;
120 zebra api notifies address adds/dels events by using the same call
121 interface_add_read below, see comments in lib/zclient.c
123 zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, ...)
124 will add address to interface list by calling
125 connected_add_by_prefix()
127 c
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
131 pim_ifp
= c
->ifp
->info
;
134 if (PIM_DEBUG_ZEBRA
) {
136 prefix2str(p
, buf
, BUFSIZ
);
137 zlog_debug("%s: %s(%u) connected IP address %s flags %u %s",
138 __PRETTY_FUNCTION__
, c
->ifp
->name
, vrf_id
, buf
,
140 CHECK_FLAG(c
->flags
, ZEBRA_IFA_SECONDARY
)
144 #ifdef PIM_DEBUG_IFADDR_DUMP
145 dump_if_address(c
->ifp
);
149 if (!CHECK_FLAG(c
->flags
, ZEBRA_IFA_SECONDARY
)) {
150 /* trying to add primary address */
152 struct in_addr primary_addr
= pim_find_primary_addr(c
->ifp
);
153 if (p
->family
!= AF_INET
154 || primary_addr
.s_addr
!= p
->u
.prefix4
.s_addr
) {
155 if (PIM_DEBUG_ZEBRA
) {
156 /* but we had a primary address already */
160 prefix2str(p
, buf
, BUFSIZ
);
163 "%s: %s : forcing secondary flag on %s",
164 __PRETTY_FUNCTION__
, c
->ifp
->name
, buf
);
166 SET_FLAG(c
->flags
, ZEBRA_IFA_SECONDARY
);
172 pim
= pim_get_pim_instance(vrf_id
);
175 pim_rp_check_on_if_add(pim_ifp
);
178 if (if_is_loopback(c
->ifp
)) {
179 struct vrf
*vrf
= vrf_lookup_by_id(VRF_DEFAULT
);
180 struct interface
*ifp
;
182 FOR_ALL_INTERFACES (vrf
, ifp
) {
183 if (!if_is_loopback(ifp
) && if_is_operative(ifp
))
184 pim_if_addr_add_all(ifp
);
191 static int pim_zebra_if_address_del(ZAPI_CALLBACK_ARGS
)
195 struct vrf
*vrf
= vrf_lookup_by_id(vrf_id
);
196 struct pim_instance
*pim
;
203 zebra api notifies address adds/dels events by using the same call
204 interface_add_read below, see comments in lib/zclient.c
206 zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, ...)
207 will remove address from interface list by calling
208 connected_delete_by_prefix()
210 c
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
215 if (p
->family
== AF_INET
) {
216 if (PIM_DEBUG_ZEBRA
) {
218 prefix2str(p
, buf
, BUFSIZ
);
220 "%s: %s(%u) disconnected IP address %s flags %u %s",
221 __PRETTY_FUNCTION__
, c
->ifp
->name
, vrf_id
, buf
,
223 CHECK_FLAG(c
->flags
, ZEBRA_IFA_SECONDARY
)
227 #ifdef PIM_DEBUG_IFADDR_DUMP
228 dump_if_address(c
->ifp
);
232 pim_if_addr_del(c
, 0);
234 pim_i_am_rp_re_evaluate(pim
);
241 void pim_zebra_update_all_interfaces(struct pim_instance
*pim
)
243 struct interface
*ifp
;
245 FOR_ALL_INTERFACES (pim
->vrf
, ifp
) {
246 struct pim_interface
*pim_ifp
= ifp
->info
;
247 struct pim_iface_upstream_switch
*us
;
248 struct listnode
*node
;
253 for (ALL_LIST_ELEMENTS_RO(pim_ifp
->upstream_switch_list
, node
,
257 rpf
.source_nexthop
.interface
= ifp
;
258 rpf
.rpf_addr
.u
.prefix4
= us
->address
;
259 pim_joinprune_send(&rpf
, us
->us
);
260 pim_jp_agg_clear_group(us
->us
);
265 void pim_zebra_upstream_rpf_changed(struct pim_instance
*pim
,
266 struct pim_upstream
*up
,
269 if (old
->source_nexthop
.interface
) {
270 struct pim_neighbor
*nbr
;
272 nbr
= pim_neighbor_find(old
->source_nexthop
.interface
,
273 old
->rpf_addr
.u
.prefix4
);
275 pim_jp_agg_remove_group(nbr
->upstream_jp_agg
, up
, nbr
);
278 * We have detected a case where we might need
279 * to rescan the inherited o_list so do it.
281 if (up
->channel_oil
->oil_inherited_rescan
) {
282 pim_upstream_inherited_olist_decide(pim
, up
);
283 up
->channel_oil
->oil_inherited_rescan
= 0;
286 if (up
->join_state
== PIM_UPSTREAM_JOINED
) {
288 * If we come up real fast we can be here
289 * where the mroute has not been installed
292 if (!up
->channel_oil
->installed
)
293 pim_upstream_mroute_add(up
->channel_oil
,
294 __PRETTY_FUNCTION__
);
297 * RFC 4601: 4.5.7. Sending (S,G)
298 * Join/Prune Messages
300 * Transitions from Joined State
302 * RPF'(S,G) changes not due to an Assert
304 * The upstream (S,G) state machine remains
305 * in Joined state. Send Join(S,G) to the new
306 * upstream neighbor, which is the new value
307 * of RPF'(S,G). Send Prune(S,G) to the old
308 * upstream neighbor, which is the old value
309 * of RPF'(S,G). Set the Join Timer (JT) to
310 * expire after t_periodic seconds.
312 pim_jp_agg_switch_interface(old
, &up
->rpf
, up
);
314 pim_upstream_join_timer_restart(up
, old
);
315 } /* up->join_state == PIM_UPSTREAM_JOINED */
320 * We have detected a case where we might need
321 * to rescan the inherited o_list so do it.
323 if (up
->channel_oil
->oil_inherited_rescan
) {
324 pim_upstream_inherited_olist_decide(pim
, up
);
325 up
->channel_oil
->oil_inherited_rescan
= 0;
328 if (up
->join_state
== PIM_UPSTREAM_JOINED
)
329 pim_jp_agg_switch_interface(old
, &up
->rpf
, up
);
331 if (!up
->channel_oil
->installed
)
332 pim_upstream_mroute_add(up
->channel_oil
,
333 __PRETTY_FUNCTION__
);
336 /* FIXME can join_desired actually be changed by pim_rpf_update()
337 * returning PIM_RPF_CHANGED ?
339 pim_upstream_update_join_desired(pim
, up
);
342 static int pim_zebra_vxlan_sg_proc(ZAPI_CALLBACK_ARGS
)
345 struct pim_instance
*pim
;
348 pim
= pim_get_pim_instance(vrf_id
);
355 sg
.prefixlen
= stream_getl(s
);
356 stream_get(&sg
.src
.s_addr
, s
, sg
.prefixlen
);
357 stream_get(&sg
.grp
.s_addr
, s
, sg
.prefixlen
);
359 if (PIM_DEBUG_ZEBRA
) {
360 char sg_str
[PIM_SG_LEN
];
362 pim_str_sg_set(&sg
, sg_str
);
363 zlog_debug("%u:recv SG %s %s", vrf_id
,
364 (cmd
== ZEBRA_VXLAN_SG_ADD
)?"add":"del",
368 if (cmd
== ZEBRA_VXLAN_SG_ADD
)
369 pim_vxlan_sg_add(pim
, &sg
);
371 pim_vxlan_sg_del(pim
, &sg
);
376 static void pim_zebra_vxlan_replay(void)
378 struct stream
*s
= NULL
;
381 if (!zclient
|| zclient
->sock
< 0)
387 zclient_create_header(s
, ZEBRA_VXLAN_SG_REPLAY
, VRF_DEFAULT
);
388 stream_putw_at(s
, 0, stream_get_endp(s
));
390 zclient_send_message(zclient
);
393 void pim_scan_oil(struct pim_instance
*pim
)
395 struct channel_oil
*c_oil
;
397 pim
->scan_oil_last
= pim_time_monotonic_sec();
398 ++pim
->scan_oil_events
;
400 frr_each (rb_pim_oil
, &pim
->channel_oil_head
, c_oil
)
401 pim_upstream_mroute_iif_update(c_oil
, __func__
);
404 static int on_rpf_cache_refresh(struct thread
*t
)
406 struct pim_instance
*pim
= THREAD_ARG(t
);
408 /* update kernel multicast forwarding cache (MFC) */
411 pim
->rpf_cache_refresh_last
= pim_time_monotonic_sec();
412 ++pim
->rpf_cache_refresh_events
;
414 // It is called as part of pim_neighbor_add
419 void sched_rpf_cache_refresh(struct pim_instance
*pim
)
421 ++pim
->rpf_cache_refresh_requests
;
423 pim_rpf_set_refresh_time(pim
);
425 if (pim
->rpf_cache_refresher
) {
426 /* Refresh timer is already running */
430 /* Start refresh timer */
432 if (PIM_DEBUG_ZEBRA
) {
433 zlog_debug("%s: triggering %ld msec timer", __PRETTY_FUNCTION__
,
434 router
->rpf_cache_refresh_delay_msec
);
437 thread_add_timer_msec(router
->master
, on_rpf_cache_refresh
, pim
,
438 router
->rpf_cache_refresh_delay_msec
,
439 &pim
->rpf_cache_refresher
);
442 static void pim_zebra_connected(struct zclient
*zclient
)
444 /* Send the client registration */
445 bfd_client_sendmsg(zclient
, ZEBRA_BFD_CLIENT_REGISTER
, router
->vrf_id
);
447 zclient_send_reg_requests(zclient
, router
->vrf_id
);
449 /* request for VxLAN BUM group addresses */
450 pim_zebra_vxlan_replay();
453 static void pim_zebra_capabilities(struct zclient_capabilities
*cap
)
455 router
->role
= cap
->role
;
458 void pim_zebra_init(void)
460 /* Socket for receiving updates from Zebra daemon */
461 zclient
= zclient_new(router
->master
, &zclient_options_default
);
463 zclient
->zebra_capabilities
= pim_zebra_capabilities
;
464 zclient
->zebra_connected
= pim_zebra_connected
;
465 zclient
->router_id_update
= pim_router_id_update_zebra
;
466 zclient
->interface_address_add
= pim_zebra_if_address_add
;
467 zclient
->interface_address_delete
= pim_zebra_if_address_del
;
468 zclient
->interface_vrf_update
= pim_zebra_interface_vrf_update
;
469 zclient
->nexthop_update
= pim_parse_nexthop_update
;
470 zclient
->vxlan_sg_add
= pim_zebra_vxlan_sg_proc
;
471 zclient
->vxlan_sg_del
= pim_zebra_vxlan_sg_proc
;
472 zclient
->mlag_process_up
= pim_zebra_mlag_process_up
;
473 zclient
->mlag_process_down
= pim_zebra_mlag_process_down
;
474 zclient
->mlag_handle_msg
= pim_zebra_mlag_handle_msg
;
476 zclient_init(zclient
, ZEBRA_ROUTE_PIM
, 0, &pimd_privs
);
477 if (PIM_DEBUG_PIM_TRACE
) {
478 zlog_notice("%s: zclient socket initialized",
479 __PRETTY_FUNCTION__
);
482 zclient_lookup_new();
485 void igmp_anysource_forward_start(struct pim_instance
*pim
,
486 struct igmp_group
*group
)
488 struct igmp_source
*source
;
489 struct in_addr src_addr
= {.s_addr
= 0};
490 /* Any source (*,G) is forwarded only if mode is EXCLUDE {empty} */
491 zassert(group
->group_filtermode_isexcl
);
492 zassert(listcount(group
->group_source_list
) < 1);
494 source
= source_new(group
, src_addr
);
496 zlog_warn("%s: Failure to create * source",
497 __PRETTY_FUNCTION__
);
501 igmp_source_forward_start(pim
, source
);
504 void igmp_anysource_forward_stop(struct igmp_group
*group
)
506 struct igmp_source
*source
;
507 struct in_addr star
= {.s_addr
= 0};
509 source
= igmp_find_source_by_addr(group
, star
);
511 igmp_source_forward_stop(source
);
514 static void igmp_source_forward_reevaluate_one(struct pim_instance
*pim
,
515 struct igmp_source
*source
)
518 struct igmp_group
*group
= source
->source_group
;
519 struct pim_ifchannel
*ch
;
521 if ((source
->source_addr
.s_addr
!= INADDR_ANY
)
522 || !IGMP_SOURCE_TEST_FORWARDING(source
->source_flags
))
525 memset(&sg
, 0, sizeof(struct prefix_sg
));
526 sg
.src
= source
->source_addr
;
527 sg
.grp
= group
->group_addr
;
529 ch
= pim_ifchannel_find(group
->group_igmp_sock
->interface
, &sg
);
530 if (pim_is_grp_ssm(pim
, group
->group_addr
)) {
531 /* If SSM group withdraw local membership */
533 && (ch
->local_ifmembership
== PIM_IFMEMBERSHIP_INCLUDE
)) {
534 if (PIM_DEBUG_PIM_EVENTS
)
536 "local membership del for %s as G is now SSM",
537 pim_str_sg_dump(&sg
));
538 pim_ifchannel_local_membership_del(
539 group
->group_igmp_sock
->interface
, &sg
);
542 /* If ASM group add local membership */
544 || (ch
->local_ifmembership
== PIM_IFMEMBERSHIP_NOINFO
)) {
545 if (PIM_DEBUG_PIM_EVENTS
)
547 "local membership add for %s as G is now ASM",
548 pim_str_sg_dump(&sg
));
549 pim_ifchannel_local_membership_add(
550 group
->group_igmp_sock
->interface
, &sg
);
555 void igmp_source_forward_reevaluate_all(struct pim_instance
*pim
)
557 struct interface
*ifp
;
559 FOR_ALL_INTERFACES (pim
->vrf
, ifp
) {
560 struct pim_interface
*pim_ifp
= ifp
->info
;
561 struct listnode
*sock_node
;
562 struct igmp_sock
*igmp
;
567 /* scan igmp sockets */
568 for (ALL_LIST_ELEMENTS_RO(pim_ifp
->igmp_socket_list
, sock_node
,
570 struct listnode
*grpnode
;
571 struct igmp_group
*grp
;
573 /* scan igmp groups */
574 for (ALL_LIST_ELEMENTS_RO(igmp
->igmp_group_list
,
576 struct listnode
*srcnode
;
577 struct igmp_source
*src
;
579 /* scan group sources */
580 for (ALL_LIST_ELEMENTS_RO(
581 grp
->group_source_list
, srcnode
,
583 igmp_source_forward_reevaluate_one(pim
,
585 } /* scan group sources */
586 } /* scan igmp groups */
587 } /* scan igmp sockets */
588 } /* scan interfaces */
591 void igmp_source_forward_start(struct pim_instance
*pim
,
592 struct igmp_source
*source
)
594 struct pim_interface
*pim_oif
;
595 struct igmp_group
*group
;
598 int input_iface_vif_index
= 0;
600 memset(&sg
, 0, sizeof(struct prefix_sg
));
601 sg
.src
= source
->source_addr
;
602 sg
.grp
= source
->source_group
->group_addr
;
604 if (PIM_DEBUG_IGMP_TRACE
) {
606 "%s: (S,G)=%s igmp_sock=%d oif=%s fwd=%d",
607 __PRETTY_FUNCTION__
, pim_str_sg_dump(&sg
),
608 source
->source_group
->group_igmp_sock
->fd
,
609 source
->source_group
->group_igmp_sock
->interface
->name
,
610 IGMP_SOURCE_TEST_FORWARDING(source
->source_flags
));
613 /* Prevent IGMP interface from installing multicast route multiple
615 if (IGMP_SOURCE_TEST_FORWARDING(source
->source_flags
)) {
619 group
= source
->source_group
;
620 pim_oif
= group
->group_igmp_sock
->interface
->info
;
622 if (PIM_DEBUG_IGMP_TRACE
) {
624 "%s: multicast not enabled on oif=%s ?",
626 source
->source_group
->group_igmp_sock
632 if (!source
->source_channel_oil
) {
633 struct in_addr vif_source
;
634 struct prefix src
, grp
;
635 struct pim_nexthop nexthop
;
636 struct pim_upstream
*up
= NULL
;
638 if (!pim_rp_set_upstream_addr(pim
, &vif_source
,
639 source
->source_addr
, sg
.grp
)) {
640 /*Create a dummy channel oil */
641 source
->source_channel_oil
= pim_channel_oil_add(
642 pim
, &sg
, __PRETTY_FUNCTION__
);
646 src
.family
= AF_INET
;
647 src
.prefixlen
= IPV4_MAX_BITLEN
;
648 src
.u
.prefix4
= vif_source
; // RP or Src address
649 grp
.family
= AF_INET
;
650 grp
.prefixlen
= IPV4_MAX_BITLEN
;
651 grp
.u
.prefix4
= sg
.grp
;
653 up
= pim_upstream_find(pim
, &sg
);
655 memcpy(&nexthop
, &up
->rpf
.source_nexthop
,
656 sizeof(struct pim_nexthop
));
657 pim_ecmp_nexthop_lookup(pim
, &nexthop
, &src
,
659 if (nexthop
.interface
)
660 input_iface_vif_index
=
661 pim_if_find_vifindex_by_ifindex(
663 nexthop
.interface
->ifindex
);
665 input_iface_vif_index
=
666 pim_ecmp_fib_lookup_if_vif_index(
669 if (PIM_DEBUG_ZEBRA
) {
670 char buf2
[INET_ADDRSTRLEN
];
672 pim_inet4_dump("<source?>", vif_source
, buf2
,
674 zlog_debug("%s: NHT %s vif_source %s vif_index:%d ",
676 pim_str_sg_dump(&sg
),
677 buf2
, input_iface_vif_index
);
680 if (input_iface_vif_index
< 1) {
681 if (PIM_DEBUG_IGMP_TRACE
) {
682 char source_str
[INET_ADDRSTRLEN
];
683 pim_inet4_dump("<source?>",
685 source_str
, sizeof(source_str
));
687 "%s %s: could not find input interface for source %s",
688 __FILE__
, __PRETTY_FUNCTION__
,
691 source
->source_channel_oil
=
694 __PRETTY_FUNCTION__
);
699 * Protect IGMP against adding looped MFC
700 * entries created by both source and receiver
701 * attached to the same interface. See TODO
702 * T22. Block only when the intf is non DR
703 * DR must create upstream.
705 if ((input_iface_vif_index
==
706 pim_oif
->mroute_vif_index
) &&
707 !(PIM_I_am_DR(pim_oif
))) {
708 /* ignore request for looped MFC entry
710 if (PIM_DEBUG_IGMP_TRACE
) {
712 "%s: ignoring request for looped MFC entry (S,G)=%s: igmp_sock=%d oif=%s vif_index=%d",
714 pim_str_sg_dump(&sg
),
716 ->group_igmp_sock
->fd
,
720 input_iface_vif_index
);
725 source
->source_channel_oil
=
728 __PRETTY_FUNCTION__
);
729 if (!source
->source_channel_oil
) {
730 if (PIM_DEBUG_IGMP_TRACE
) {
732 "%s %s: could not create OIL for channel (S,G)=%s",
735 pim_str_sg_dump(&sg
));
743 if (PIM_I_am_DR(pim_oif
)) {
744 result
= pim_channel_add_oif(source
->source_channel_oil
,
745 group
->group_igmp_sock
->interface
,
746 PIM_OIF_FLAG_PROTO_IGMP
, __func__
);
748 if (PIM_DEBUG_MROUTE
) {
749 zlog_warn("%s: add_oif() failed with return=%d",
755 if (PIM_DEBUG_IGMP_TRACE
)
756 zlog_debug("%s: %s was received on %s interface but we are not DR for that interface",
758 pim_str_sg_dump(&sg
),
759 group
->group_igmp_sock
->interface
->name
);
764 Feed IGMPv3-gathered local membership information into PIM
765 per-interface (S,G) state.
767 if (!pim_ifchannel_local_membership_add(
768 group
->group_igmp_sock
->interface
, &sg
)) {
769 if (PIM_DEBUG_MROUTE
)
770 zlog_warn("%s: Failure to add local membership for %s",
771 __PRETTY_FUNCTION__
, pim_str_sg_dump(&sg
));
773 pim_channel_del_oif(source
->source_channel_oil
,
774 group
->group_igmp_sock
->interface
,
775 PIM_OIF_FLAG_PROTO_IGMP
, __func__
);
779 IGMP_SOURCE_DO_FORWARDING(source
->source_flags
);
783 igmp_source_forward_stop: stop fowarding, but keep the source
784 igmp_source_delete: stop fowarding, and delete the source
786 void igmp_source_forward_stop(struct igmp_source
*source
)
788 struct igmp_group
*group
;
792 memset(&sg
, 0, sizeof(struct prefix_sg
));
793 sg
.src
= source
->source_addr
;
794 sg
.grp
= source
->source_group
->group_addr
;
796 if (PIM_DEBUG_IGMP_TRACE
) {
798 "%s: (S,G)=%s igmp_sock=%d oif=%s fwd=%d",
799 __PRETTY_FUNCTION__
, pim_str_sg_dump(&sg
),
800 source
->source_group
->group_igmp_sock
->fd
,
801 source
->source_group
->group_igmp_sock
->interface
->name
,
802 IGMP_SOURCE_TEST_FORWARDING(source
->source_flags
));
805 /* Prevent IGMP interface from removing multicast route multiple
807 if (!IGMP_SOURCE_TEST_FORWARDING(source
->source_flags
)) {
811 group
= source
->source_group
;
814 It appears that in certain circumstances that
815 igmp_source_forward_stop is called when IGMP forwarding
816 was not enabled in oif_flags for this outgoing interface.
817 Possibly because of multiple calls. When that happens, we
818 enter the below if statement and this function returns early
819 which in turn triggers the calling function to assert.
820 Making the call to pim_channel_del_oif and ignoring the return code
821 fixes the issue without ill effect, similar to
822 pim_forward_stop below.
824 result
= pim_channel_del_oif(source
->source_channel_oil
,
825 group
->group_igmp_sock
->interface
,
826 PIM_OIF_FLAG_PROTO_IGMP
,
829 if (PIM_DEBUG_IGMP_TRACE
)
831 "%s: pim_channel_del_oif() failed with return=%d",
837 Feed IGMPv3-gathered local membership information into PIM
838 per-interface (S,G) state.
840 pim_ifchannel_local_membership_del(group
->group_igmp_sock
->interface
,
843 IGMP_SOURCE_DONT_FORWARDING(source
->source_flags
);
846 void pim_forward_start(struct pim_ifchannel
*ch
)
848 struct pim_upstream
*up
= ch
->upstream
;
849 uint32_t mask
= PIM_OIF_FLAG_PROTO_PIM
;
851 if (PIM_DEBUG_PIM_TRACE
) {
852 char source_str
[INET_ADDRSTRLEN
];
853 char group_str
[INET_ADDRSTRLEN
];
854 char upstream_str
[INET_ADDRSTRLEN
];
856 pim_inet4_dump("<source?>", ch
->sg
.src
, source_str
,
858 pim_inet4_dump("<group?>", ch
->sg
.grp
, group_str
,
860 pim_inet4_dump("<upstream?>", up
->upstream_addr
, upstream_str
,
861 sizeof(upstream_str
));
862 zlog_debug("%s: (S,G)=(%s,%s) oif=%s (%s)", __PRETTY_FUNCTION__
,
863 source_str
, group_str
, ch
->interface
->name
,
864 inet_ntoa(up
->upstream_addr
));
867 if (up
->flags
& PIM_UPSTREAM_FLAG_MASK_SRC_IGMP
)
868 mask
= PIM_OIF_FLAG_PROTO_IGMP
;
870 pim_channel_add_oif(up
->channel_oil
, ch
->interface
,
874 void pim_forward_stop(struct pim_ifchannel
*ch
, bool install_it
)
876 struct pim_upstream
*up
= ch
->upstream
;
878 if (PIM_DEBUG_PIM_TRACE
) {
879 zlog_debug("%s: (S,G)=%s oif=%s install_it: %d installed: %d",
880 __PRETTY_FUNCTION__
, ch
->sg_str
, ch
->interface
->name
,
881 install_it
, up
->channel_oil
->installed
);
885 * If a channel is being removed, check to see if we still need
886 * to inherit the interface. If so make sure it is added in
888 if (pim_upstream_evaluate_join_desired_interface(up
, ch
, ch
->parent
))
889 pim_channel_add_oif(up
->channel_oil
, ch
->interface
,
890 PIM_OIF_FLAG_PROTO_PIM
, __func__
);
892 pim_channel_del_oif(up
->channel_oil
, ch
->interface
,
893 PIM_OIF_FLAG_PROTO_PIM
, __func__
);
895 if (install_it
&& !up
->channel_oil
->installed
)
896 pim_upstream_mroute_add(up
->channel_oil
, __PRETTY_FUNCTION__
);
899 void pim_zebra_zclient_update(struct vty
*vty
)
901 vty_out(vty
, "Zclient update socket: ");
904 vty_out(vty
, "%d failures=%d\n", zclient
->sock
, zclient
->fail
);
906 vty_out(vty
, "<null zclient>\n");
910 struct zclient
*pim_zebra_zclient_get(void)
918 void pim_zebra_interface_set_master(struct interface
*vrf
,
919 struct interface
*ifp
)
921 zclient_interface_set_master(zclient
, vrf
, ifp
);