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
38 #include "pim_iface.h"
40 #include "pim_zlookup.h"
41 #include "pim_upstream.h"
42 #include "pim_ifchannel.h"
43 #include "pim_neighbor.h"
45 #include "pim_zebra.h"
47 #include "pim_macro.h"
50 #include "pim_register.h"
52 #include "pim_jp_agg.h"
55 #include "pim_vxlan.h"
58 static void join_timer_stop(struct pim_upstream
*up
);
60 pim_upstream_update_assert_tracking_desired(struct pim_upstream
*up
);
61 static bool pim_upstream_sg_running_proc(struct pim_upstream
*up
);
64 * A (*,G) or a (*,*) is going away
65 * remove the parent pointer from
66 * those pointing at us
68 static void pim_upstream_remove_children(struct pim_instance
*pim
,
69 struct pim_upstream
*up
)
71 struct pim_upstream
*child
;
76 while (!list_isempty(up
->sources
)) {
77 child
= listnode_head(up
->sources
);
78 listnode_delete(up
->sources
, child
);
79 if (PIM_UPSTREAM_FLAG_TEST_SRC_LHR(child
->flags
)) {
80 PIM_UPSTREAM_FLAG_UNSET_SRC_LHR(child
->flags
);
81 child
= pim_upstream_del(pim
, child
, __func__
);
85 if (PIM_UPSTREAM_FLAG_TEST_USE_RPT(child
->flags
))
86 pim_upstream_mroute_iif_update(
91 list_delete(&up
->sources
);
95 * A (*,G) or a (*,*) is being created
96 * Find the children that would point
99 static void pim_upstream_find_new_children(struct pim_instance
*pim
,
100 struct pim_upstream
*up
)
102 struct pim_upstream
*child
;
104 if (!pim_addr_is_any(up
->sg
.src
) && !pim_addr_is_any(up
->sg
.grp
))
107 if (pim_addr_is_any(up
->sg
.src
) && pim_addr_is_any(up
->sg
.grp
))
110 frr_each (rb_pim_upstream
, &pim
->upstream_head
, child
) {
111 if (!pim_addr_is_any(up
->sg
.grp
) &&
112 !pim_addr_cmp(child
->sg
.grp
, up
->sg
.grp
) && (child
!= up
)) {
114 listnode_add_sort(up
->sources
, child
);
115 if (PIM_UPSTREAM_FLAG_TEST_USE_RPT(child
->flags
))
116 pim_upstream_mroute_iif_update(
124 * If we have a (*,*) || (S,*) there is no parent
125 * If we have a (S,G), find the (*,G)
126 * If we have a (*,G), find the (*,*)
128 static struct pim_upstream
*pim_upstream_find_parent(struct pim_instance
*pim
,
129 struct pim_upstream
*child
)
131 pim_sgaddr any
= child
->sg
;
132 struct pim_upstream
*up
= NULL
;
135 if (!pim_addr_is_any(child
->sg
.src
) &&
136 !pim_addr_is_any(child
->sg
.grp
)) {
137 any
.src
= PIMADDR_ANY
;
138 up
= pim_upstream_find(pim
, &any
);
141 listnode_add(up
->sources
, child
);
144 * In case parent is MLAG entry copy the data to child
146 if (up
&& PIM_UPSTREAM_FLAG_TEST_MLAG_INTERFACE(up
->flags
)) {
147 PIM_UPSTREAM_FLAG_SET_MLAG_INTERFACE(child
->flags
);
148 if (PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(up
->flags
))
149 PIM_UPSTREAM_FLAG_SET_MLAG_NON_DF(child
->flags
);
151 PIM_UPSTREAM_FLAG_UNSET_MLAG_NON_DF(
161 static void upstream_channel_oil_detach(struct pim_upstream
*up
)
163 struct channel_oil
*channel_oil
= up
->channel_oil
;
166 /* Detaching from channel_oil, channel_oil may exist post del,
167 but upstream would not keep reference of it
169 channel_oil
->up
= NULL
;
170 up
->channel_oil
= NULL
;
172 /* attempt to delete channel_oil; if channel_oil is being held
173 * because of other references cleanup info such as "Mute"
174 * inferred from the parent upstream
176 pim_channel_oil_upstream_deref(channel_oil
);
181 static void pim_upstream_timers_stop(struct pim_upstream
*up
)
183 THREAD_OFF(up
->t_ka_timer
);
184 THREAD_OFF(up
->t_rs_timer
);
185 THREAD_OFF(up
->t_msdp_reg_timer
);
186 THREAD_OFF(up
->t_join_timer
);
189 struct pim_upstream
*pim_upstream_del(struct pim_instance
*pim
,
190 struct pim_upstream
*up
, const char *name
)
192 struct listnode
*node
, *nnode
;
193 struct pim_ifchannel
*ch
;
194 bool notify_msdp
= false;
197 if (PIM_DEBUG_PIM_TRACE
)
199 "%s(%s): Delete %s[%s] ref count: %d , flags: %d c_oil ref count %d (Pre decrement)",
200 __func__
, name
, up
->sg_str
, pim
->vrf
->name
,
201 up
->ref_count
, up
->flags
,
202 up
->channel_oil
->oil_ref_count
);
204 assert(up
->ref_count
> 0);
208 if (up
->ref_count
>= 1)
212 zlog_debug("pim_upstream free vrf:%s %s flags 0x%x",
213 pim
->vrf
->name
, up
->sg_str
, up
->flags
);
215 if (pim_up_mlag_is_local(up
))
216 pim_mlag_up_local_del(pim
, up
);
218 pim_upstream_timers_stop(up
);
220 if (up
->join_state
== PIM_UPSTREAM_JOINED
) {
221 pim_jp_agg_single_upstream_send(&up
->rpf
, up
, 0);
223 if (pim_addr_is_any(up
->sg
.src
)) {
224 /* if a (*, G) entry in the joined state is being
226 * need to notify MSDP */
232 pim_jp_agg_upstream_verification(up
, false);
233 up
->rpf
.source_nexthop
.interface
= NULL
;
235 if (!pim_addr_is_any(up
->sg
.src
)) {
236 if (pim
->upstream_sg_wheel
)
237 wheel_remove_item(pim
->upstream_sg_wheel
, up
);
241 pim_mroute_del(up
->channel_oil
, __func__
);
242 upstream_channel_oil_detach(up
);
244 for (ALL_LIST_ELEMENTS(up
->ifchannels
, node
, nnode
, ch
))
245 pim_ifchannel_delete(ch
);
246 list_delete(&up
->ifchannels
);
248 pim_upstream_remove_children(pim
, up
);
250 list_delete(&up
->sources
);
252 if (up
->parent
&& up
->parent
->sources
)
253 listnode_delete(up
->parent
->sources
, up
);
256 rb_pim_upstream_del(&pim
->upstream_head
, up
);
259 pim_msdp_up_del(pim
, &up
->sg
);
262 /* When RP gets deleted, pim_rp_del() deregister addr with Zebra NHT
263 * and assign up->upstream_addr as INADDR_ANY.
264 * So before de-registering the upstream address, check if is not equal
265 * to INADDR_ANY. This is done in order to avoid de-registering for
266 * 255.255.255.255 which is maintained for some reason..
268 if (!pim_addr_is_any(up
->upstream_addr
)) {
269 /* Deregister addr with Zebra NHT */
270 pim_addr_to_prefix(&nht_p
, up
->upstream_addr
);
271 if (PIM_DEBUG_PIM_TRACE
)
273 "%s: Deregister upstream %s addr %pFX with Zebra NHT",
274 __func__
, up
->sg_str
, &nht_p
);
275 pim_delete_tracked_nexthop(pim
, &nht_p
, up
, NULL
);
278 XFREE(MTYPE_PIM_UPSTREAM
, up
);
283 void pim_upstream_send_join(struct pim_upstream
*up
)
285 if (!up
->rpf
.source_nexthop
.interface
) {
286 if (PIM_DEBUG_PIM_TRACE
)
287 zlog_debug("%s: up %s RPF is not present", __func__
,
292 if (PIM_DEBUG_PIM_TRACE
) {
293 char rpf_str
[PREFIX_STRLEN
];
294 pim_addr_dump("<rpf?>", &up
->rpf
.rpf_addr
, rpf_str
,
296 zlog_debug("%s: RPF'%s=%s(%s) for Interface %s", __func__
,
298 pim_upstream_state2str(up
->join_state
),
299 up
->rpf
.source_nexthop
.interface
->name
);
300 if (pim_rpf_addr_is_inaddr_any(&up
->rpf
)) {
301 zlog_debug("%s: can't send join upstream: RPF'%s=%s",
302 __func__
, up
->sg_str
, rpf_str
);
307 /* send Join(S,G) to the current upstream neighbor */
308 pim_jp_agg_single_upstream_send(&up
->rpf
, up
, 1 /* join */);
311 static void on_join_timer(struct thread
*t
)
313 struct pim_upstream
*up
;
317 if (!up
->rpf
.source_nexthop
.interface
) {
318 if (PIM_DEBUG_PIM_TRACE
)
319 zlog_debug("%s: up %s RPF is not present", __func__
,
325 * In the case of a HFR we will not ahve anyone to send this to.
327 if (PIM_UPSTREAM_FLAG_TEST_FHR(up
->flags
))
331 * Don't send the join if the outgoing interface is a loopback
332 * But since this might change leave the join timer running
334 if (up
->rpf
.source_nexthop
335 .interface
&& !if_is_loopback(up
->rpf
.source_nexthop
.interface
))
336 pim_upstream_send_join(up
);
338 join_timer_start(up
);
341 static void join_timer_stop(struct pim_upstream
*up
)
343 struct pim_neighbor
*nbr
= NULL
;
345 THREAD_OFF(up
->t_join_timer
);
347 if (up
->rpf
.source_nexthop
.interface
)
348 nbr
= pim_neighbor_find_prefix(up
->rpf
.source_nexthop
.interface
,
352 pim_jp_agg_remove_group(nbr
->upstream_jp_agg
, up
, nbr
);
354 pim_jp_agg_upstream_verification(up
, false);
357 void join_timer_start(struct pim_upstream
*up
)
359 struct pim_neighbor
*nbr
= NULL
;
361 if (up
->rpf
.source_nexthop
.interface
) {
362 nbr
= pim_neighbor_find_prefix(up
->rpf
.source_nexthop
.interface
,
365 if (PIM_DEBUG_PIM_EVENTS
) {
367 "%s: starting %d sec timer for upstream (S,G)=%s",
368 __func__
, router
->t_periodic
, up
->sg_str
);
373 pim_jp_agg_add_group(nbr
->upstream_jp_agg
, up
, 1, nbr
);
375 THREAD_OFF(up
->t_join_timer
);
376 thread_add_timer(router
->master
, on_join_timer
, up
,
377 router
->t_periodic
, &up
->t_join_timer
);
379 pim_jp_agg_upstream_verification(up
, true);
383 * This is only called when we are switching the upstream
384 * J/P from one neighbor to another
386 * As such we need to remove from the old list and
387 * add to the new list.
389 void pim_upstream_join_timer_restart(struct pim_upstream
*up
,
392 // THREAD_OFF(up->t_join_timer);
393 join_timer_start(up
);
396 static void pim_upstream_join_timer_restart_msec(struct pim_upstream
*up
,
399 if (PIM_DEBUG_PIM_EVENTS
) {
400 zlog_debug("%s: restarting %d msec timer for upstream (S,G)=%s",
401 __func__
, interval_msec
, up
->sg_str
);
404 THREAD_OFF(up
->t_join_timer
);
405 thread_add_timer_msec(router
->master
, on_join_timer
, up
, interval_msec
,
409 void pim_update_suppress_timers(uint32_t suppress_time
)
411 struct pim_instance
*pim
;
413 unsigned int old_rp_ka_time
;
415 /* stash the old one so we know which values were manually configured */
416 old_rp_ka_time
= (3 * router
->register_suppress_time
417 + router
->register_probe_time
);
418 router
->register_suppress_time
= suppress_time
;
420 RB_FOREACH (vrf
, vrf_name_head
, &vrfs_by_name
) {
425 /* Only adjust if not manually configured */
426 if (pim
->rp_keep_alive_time
== old_rp_ka_time
)
427 pim
->rp_keep_alive_time
= PIM_RP_KEEPALIVE_PERIOD
;
431 void pim_upstream_join_suppress(struct pim_upstream
*up
, struct prefix rpf
,
434 long t_joinsuppress_msec
;
435 long join_timer_remain_msec
= 0;
436 struct pim_neighbor
*nbr
= NULL
;
438 if (!up
->rpf
.source_nexthop
.interface
) {
439 if (PIM_DEBUG_PIM_TRACE
)
440 zlog_debug("%s: up %s RPF is not present", __func__
,
445 t_joinsuppress_msec
=
446 MIN(pim_if_t_suppressed_msec(up
->rpf
.source_nexthop
.interface
),
449 if (up
->t_join_timer
)
450 join_timer_remain_msec
=
451 pim_time_timer_remain_msec(up
->t_join_timer
);
453 /* Remove it from jp agg from the nbr for suppression */
454 nbr
= pim_neighbor_find_prefix(up
->rpf
.source_nexthop
.interface
,
457 join_timer_remain_msec
=
458 pim_time_timer_remain_msec(nbr
->jp_timer
);
462 if (PIM_DEBUG_PIM_TRACE
) {
463 char rpf_str
[INET_ADDRSTRLEN
];
465 pim_addr_dump("<rpf?>", &rpf
, rpf_str
, sizeof(rpf_str
));
467 "%s %s: detected Join%s to RPF'(S,G)=%s: join_timer=%ld msec t_joinsuppress=%ld msec",
468 __FILE__
, __func__
, up
->sg_str
, rpf_str
,
469 join_timer_remain_msec
, t_joinsuppress_msec
);
472 if (join_timer_remain_msec
< t_joinsuppress_msec
) {
473 if (PIM_DEBUG_PIM_TRACE
) {
475 "%s %s: suppressing Join(S,G)=%s for %ld msec",
476 __FILE__
, __func__
, up
->sg_str
,
477 t_joinsuppress_msec
);
481 pim_jp_agg_remove_group(nbr
->upstream_jp_agg
, up
, nbr
);
483 pim_upstream_join_timer_restart_msec(up
, t_joinsuppress_msec
);
487 void pim_upstream_join_timer_decrease_to_t_override(const char *debug_label
,
488 struct pim_upstream
*up
)
490 long join_timer_remain_msec
;
493 if (!up
->rpf
.source_nexthop
.interface
) {
494 if (PIM_DEBUG_PIM_TRACE
)
495 zlog_debug("%s: up %s RPF is not present", __func__
,
501 pim_if_t_override_msec(up
->rpf
.source_nexthop
.interface
);
503 if (up
->t_join_timer
) {
504 join_timer_remain_msec
=
505 pim_time_timer_remain_msec(up
->t_join_timer
);
507 /* upstream join tracked with neighbor jp timer */
508 struct pim_neighbor
*nbr
;
510 nbr
= pim_neighbor_find_prefix(up
->rpf
.source_nexthop
.interface
,
513 join_timer_remain_msec
=
514 pim_time_timer_remain_msec(nbr
->jp_timer
);
516 /* Manipulate such that override takes place */
517 join_timer_remain_msec
= t_override_msec
+ 1;
520 if (PIM_DEBUG_PIM_TRACE
) {
521 char rpf_str
[INET_ADDRSTRLEN
];
523 pim_addr_dump("<rpf?>", &up
->rpf
.rpf_addr
, rpf_str
,
527 "%s: to RPF'%s=%s: join_timer=%ld msec t_override=%d msec",
528 debug_label
, up
->sg_str
, rpf_str
,
529 join_timer_remain_msec
, t_override_msec
);
532 if (join_timer_remain_msec
> t_override_msec
) {
533 if (PIM_DEBUG_PIM_TRACE
) {
535 "%s: decreasing (S,G)=%s join timer to t_override=%d msec",
536 debug_label
, up
->sg_str
, t_override_msec
);
539 pim_upstream_join_timer_restart_msec(up
, t_override_msec
);
543 static void forward_on(struct pim_upstream
*up
)
545 struct listnode
*chnode
;
546 struct listnode
*chnextnode
;
547 struct pim_ifchannel
*ch
= NULL
;
549 /* scan (S,G) state */
550 for (ALL_LIST_ELEMENTS(up
->ifchannels
, chnode
, chnextnode
, ch
)) {
551 if (pim_macro_chisin_oiflist(ch
))
552 pim_forward_start(ch
);
554 } /* scan iface channel list */
557 static void forward_off(struct pim_upstream
*up
)
559 struct listnode
*chnode
;
560 struct listnode
*chnextnode
;
561 struct pim_ifchannel
*ch
;
563 /* scan per-interface (S,G) state */
564 for (ALL_LIST_ELEMENTS(up
->ifchannels
, chnode
, chnextnode
, ch
)) {
566 pim_forward_stop(ch
);
568 } /* scan iface channel list */
571 int pim_upstream_could_register(struct pim_upstream
*up
)
573 struct pim_interface
*pim_ifp
= NULL
;
575 /* FORCE_PIMREG is a generic flag to let an app like VxLAN-AA register
576 * a source on an upstream entry even if the source is not directly
577 * connected on the IIF.
579 if (PIM_UPSTREAM_FLAG_TEST_FORCE_PIMREG(up
->flags
))
582 if (up
->rpf
.source_nexthop
.interface
)
583 pim_ifp
= up
->rpf
.source_nexthop
.interface
->info
;
585 if (PIM_DEBUG_PIM_TRACE
)
586 zlog_debug("%s: up %s RPF is not present", __func__
,
590 if (pim_ifp
&& PIM_I_am_DR(pim_ifp
)
591 && pim_if_connected_to_source(up
->rpf
.source_nexthop
.interface
,
598 /* Source registration is suppressed for SSM groups. When the SSM range changes
599 * we re-revaluate register setup for existing upstream entries */
600 void pim_upstream_register_reevaluate(struct pim_instance
*pim
)
602 struct pim_upstream
*up
;
604 frr_each (rb_pim_upstream
, &pim
->upstream_head
, up
) {
605 /* If FHR is set CouldRegister is True. Also check if the flow
606 * is actually active; if it is not kat setup will trigger
608 * registration whenever the flow becomes active. */
609 if (!PIM_UPSTREAM_FLAG_TEST_FHR(up
->flags
) ||
610 !pim_upstream_is_kat_running(up
))
613 if (pim_is_grp_ssm(pim
, up
->sg
.grp
)) {
614 /* clear the register state for SSM groups */
615 if (up
->reg_state
!= PIM_REG_NOINFO
) {
616 if (PIM_DEBUG_PIM_EVENTS
)
618 "Clear register for %s as G is now SSM",
620 /* remove regiface from the OIL if it is there*/
621 pim_channel_del_oif(up
->channel_oil
,
623 PIM_OIF_FLAG_PROTO_PIM
,
625 up
->reg_state
= PIM_REG_NOINFO
;
628 /* register ASM sources with the RP */
629 if (up
->reg_state
== PIM_REG_NOINFO
) {
630 if (PIM_DEBUG_PIM_EVENTS
)
632 "Register %s as G is now ASM",
634 pim_channel_add_oif(up
->channel_oil
,
636 PIM_OIF_FLAG_PROTO_PIM
,
638 up
->reg_state
= PIM_REG_JOIN
;
644 /* RFC7761, Section 4.2 “Data Packet Forwarding Rules” says we should
646 * 1. along the SPT if SPTbit is set
647 * 2. and along the RPT if SPTbit is not set
648 * If forwarding is hw accelerated i.e. control and dataplane components
649 * are separate you may not be able to reliably set SPT bit on intermediate
650 * routers while still forwarding on the (S,G,rpt).
652 * This macro is a slight deviation on the RFC and uses "traffic-agnostic"
653 * criteria to decide between using the RPT vs. SPT for forwarding.
655 void pim_upstream_update_use_rpt(struct pim_upstream
*up
,
661 if (pim_addr_is_any(up
->sg
.src
))
664 old_use_rpt
= !!PIM_UPSTREAM_FLAG_TEST_USE_RPT(up
->flags
);
666 /* We will use the SPT (IIF=RPF_interface(S) if -
667 * 1. We have decided to join the SPT
669 * 3. Source is directly connected
670 * 4. We are RP (parent's IIF is lo or vrf-device)
671 * In all other cases the source will stay along the RPT and
672 * IIF=RPF_interface(RP).
674 if (up
->join_state
== PIM_UPSTREAM_JOINED
||
675 PIM_UPSTREAM_FLAG_TEST_FHR(up
->flags
) ||
676 pim_if_connected_to_source(
677 up
->rpf
.source_nexthop
.interface
,
679 /* XXX - need to switch this to a more efficient
682 I_am_RP(up
->pim
, up
->sg
.grp
))
684 PIM_UPSTREAM_FLAG_UNSET_USE_RPT(up
->flags
);
687 PIM_UPSTREAM_FLAG_SET_USE_RPT(up
->flags
);
689 new_use_rpt
= !!PIM_UPSTREAM_FLAG_TEST_USE_RPT(up
->flags
);
690 if (old_use_rpt
!= new_use_rpt
) {
691 if (PIM_DEBUG_PIM_EVENTS
)
692 zlog_debug("%s switched from %s to %s",
694 old_use_rpt
?"RPT":"SPT",
695 new_use_rpt
?"RPT":"SPT");
697 pim_upstream_mroute_add(up
->channel_oil
, __func__
);
701 /* some events like RP change require re-evaluation of SGrpt across
704 void pim_upstream_reeval_use_rpt(struct pim_instance
*pim
)
706 struct pim_upstream
*up
;
708 frr_each (rb_pim_upstream
, &pim
->upstream_head
, up
) {
709 if (pim_addr_is_any(up
->sg
.src
))
712 pim_upstream_update_use_rpt(up
, true /*update_mroute*/);
716 void pim_upstream_switch(struct pim_instance
*pim
, struct pim_upstream
*up
,
717 enum pim_upstream_state new_state
)
719 enum pim_upstream_state old_state
= up
->join_state
;
721 if (pim_addr_is_any(up
->upstream_addr
)) {
722 if (PIM_DEBUG_PIM_EVENTS
)
723 zlog_debug("%s: RPF not configured for %s", __func__
,
728 if (!up
->rpf
.source_nexthop
.interface
) {
729 if (PIM_DEBUG_PIM_EVENTS
)
730 zlog_debug("%s: RP not reachable for %s", __func__
,
735 if (PIM_DEBUG_PIM_EVENTS
) {
736 zlog_debug("%s: PIM_UPSTREAM_%s: (S,G) old: %s new: %s",
737 __func__
, up
->sg_str
,
738 pim_upstream_state2str(up
->join_state
),
739 pim_upstream_state2str(new_state
));
742 up
->join_state
= new_state
;
743 if (old_state
!= new_state
)
744 up
->state_transition
= pim_time_monotonic_sec();
746 pim_upstream_update_assert_tracking_desired(up
);
748 if (new_state
== PIM_UPSTREAM_JOINED
) {
749 pim_upstream_inherited_olist_decide(pim
, up
);
750 if (old_state
!= PIM_UPSTREAM_JOINED
) {
751 int old_fhr
= PIM_UPSTREAM_FLAG_TEST_FHR(up
->flags
);
753 pim_msdp_up_join_state_changed(pim
, up
);
754 if (pim_upstream_could_register(up
)) {
755 PIM_UPSTREAM_FLAG_SET_FHR(up
->flags
);
757 && PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(
759 pim_upstream_keep_alive_timer_start(
760 up
, pim
->keep_alive_time
);
761 pim_register_join(up
);
764 pim_upstream_send_join(up
);
765 join_timer_start(up
);
768 if (old_state
!= new_state
)
769 pim_upstream_update_use_rpt(up
, true /*update_mroute*/);
773 bool send_xg_jp
= false;
777 * RFC 4601 Sec 4.5.7:
778 * JoinDesired(S,G) -> False, set SPTbit to false.
780 if (!pim_addr_is_any(up
->sg
.src
))
781 up
->sptbit
= PIM_UPSTREAM_SPTBIT_FALSE
;
783 if (old_state
== PIM_UPSTREAM_JOINED
)
784 pim_msdp_up_join_state_changed(pim
, up
);
786 if (old_state
!= new_state
) {
788 !!PIM_UPSTREAM_FLAG_TEST_USE_RPT(up
->flags
);
789 pim_upstream_update_use_rpt(up
, true /*update_mroute*/);
791 !!PIM_UPSTREAM_FLAG_TEST_USE_RPT(up
->flags
);
793 (new_use_rpt
!= old_use_rpt
) &&
795 /* we have decided to switch from the SPT back
796 * to the RPT which means we need to cancel
797 * any previously sent SGrpt prunes immediately
802 /* IHR, Trigger SGRpt on *,G IIF to prune S,G from RPT towards
804 If I am RP for G then send S,G prune to its IIF. */
805 if (pim_upstream_is_sg_rpt(up
) && up
->parent
&&
806 !I_am_RP(pim
, up
->sg
.grp
))
809 pim_jp_agg_single_upstream_send(&up
->rpf
, up
, 0 /* prune */);
812 if (PIM_DEBUG_PIM_TRACE_DETAIL
)
814 "re-join RPT; *,G IIF %s S,G IIF %s ",
815 up
->parent
->rpf
.source_nexthop
.interface
?
816 up
->parent
->rpf
.source_nexthop
.interface
->name
818 up
->rpf
.source_nexthop
.interface
?
819 up
->rpf
.source_nexthop
.interface
->name
:
821 pim_jp_agg_single_upstream_send(&up
->parent
->rpf
,
829 int pim_upstream_compare(const struct pim_upstream
*up1
,
830 const struct pim_upstream
*up2
)
832 return pim_sgaddr_cmp(up1
->sg
, up2
->sg
);
835 void pim_upstream_fill_static_iif(struct pim_upstream
*up
,
836 struct interface
*incoming
)
838 up
->rpf
.source_nexthop
.interface
= incoming
;
840 /* reset other parameters to matched a connected incoming interface */
841 up
->rpf
.source_nexthop
.mrib_nexthop_addr
= PIMADDR_ANY
;
842 up
->rpf
.source_nexthop
.mrib_metric_preference
=
843 ZEBRA_CONNECT_DISTANCE_DEFAULT
;
844 up
->rpf
.source_nexthop
.mrib_route_metric
= 0;
845 up
->rpf
.rpf_addr
.family
= AF_INET
;
846 up
->rpf
.rpf_addr
.u
.prefix4
.s_addr
= PIM_NET_INADDR_ANY
;
850 static struct pim_upstream
*pim_upstream_new(struct pim_instance
*pim
,
852 struct interface
*incoming
,
854 struct pim_ifchannel
*ch
)
856 enum pim_rpf_result rpf_result
;
857 struct pim_interface
*pim_ifp
;
858 struct pim_upstream
*up
;
860 up
= XCALLOC(MTYPE_PIM_UPSTREAM
, sizeof(*up
));
864 snprintfrr(up
->sg_str
, sizeof(up
->sg_str
), "%pSG", sg
);
868 rb_pim_upstream_add(&pim
->upstream_head
, up
);
869 /* Set up->upstream_addr as INADDR_ANY, if RP is not
870 * configured and retain the upstream data structure
872 if (!pim_rp_set_upstream_addr(pim
, &up
->upstream_addr
, sg
->src
,
874 if (PIM_DEBUG_PIM_TRACE
)
875 zlog_debug("%s: Received a (*,G) with no RP configured",
879 up
->parent
= pim_upstream_find_parent(pim
, up
);
880 if (pim_addr_is_any(up
->sg
.src
)) {
881 up
->sources
= list_new();
883 (int (*)(void *, void *))pim_upstream_compare
;
887 pim_upstream_find_new_children(pim
, up
);
890 up
->t_join_timer
= NULL
;
891 up
->t_ka_timer
= NULL
;
892 up
->t_rs_timer
= NULL
;
893 up
->t_msdp_reg_timer
= NULL
;
894 up
->join_state
= PIM_UPSTREAM_NOTJOINED
;
895 up
->reg_state
= PIM_REG_NOINFO
;
896 up
->state_transition
= pim_time_monotonic_sec();
897 up
->channel_oil
= pim_channel_oil_add(pim
, &up
->sg
, __func__
);
898 up
->sptbit
= PIM_UPSTREAM_SPTBIT_FALSE
;
900 up
->rpf
.source_nexthop
.interface
= NULL
;
901 up
->rpf
.source_nexthop
.mrib_nexthop_addr
= PIMADDR_ANY
;
902 up
->rpf
.source_nexthop
.mrib_metric_preference
=
903 router
->infinite_assert_metric
.metric_preference
;
904 up
->rpf
.source_nexthop
.mrib_route_metric
=
905 router
->infinite_assert_metric
.route_metric
;
906 pim_addr_to_prefix(&up
->rpf
.rpf_addr
, PIMADDR_ANY
);
907 up
->ifchannels
= list_new();
908 up
->ifchannels
->cmp
= (int (*)(void *, void *))pim_ifchannel_compare
;
910 if (!pim_addr_is_any(up
->sg
.src
)) {
911 wheel_add_item(pim
->upstream_sg_wheel
, up
);
913 /* Inherit the DF role from the parent (*, G) entry for
917 && PIM_UPSTREAM_FLAG_TEST_MLAG_VXLAN(up
->parent
->flags
)
918 && PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(up
->parent
->flags
)) {
919 PIM_UPSTREAM_FLAG_SET_MLAG_NON_DF(up
->flags
);
922 "upstream %s inherited mlag non-df flag from parent",
927 if (PIM_UPSTREAM_FLAG_TEST_STATIC_IIF(up
->flags
)
928 || PIM_UPSTREAM_FLAG_TEST_SRC_NOCACHE(up
->flags
)) {
929 pim_upstream_fill_static_iif(up
, incoming
);
930 pim_ifp
= up
->rpf
.source_nexthop
.interface
->info
;
932 pim_upstream_update_use_rpt(up
,
933 false /*update_mroute*/);
934 pim_upstream_mroute_iif_update(up
->channel_oil
, __func__
);
936 if (PIM_UPSTREAM_FLAG_TEST_SRC_NOCACHE(up
->flags
))
937 pim_upstream_keep_alive_timer_start(
938 up
, pim
->keep_alive_time
);
939 } else if (!pim_addr_is_any(up
->upstream_addr
)) {
940 pim_upstream_update_use_rpt(up
,
941 false /*update_mroute*/);
942 rpf_result
= pim_rpf_update(pim
, up
, NULL
, __func__
);
943 if (rpf_result
== PIM_RPF_FAILURE
) {
944 if (PIM_DEBUG_PIM_TRACE
)
946 "%s: Attempting to create upstream(%s), Unable to RPF for source",
947 __func__
, up
->sg_str
);
950 if (up
->rpf
.source_nexthop
.interface
) {
951 pim_upstream_mroute_iif_update(up
->channel_oil
,
956 /* send the entry to the MLAG peer */
957 /* XXX - duplicate send is possible here if pim_rpf_update
958 * successfully resolved the nexthop
960 if (pim_up_mlag_is_local(up
)
961 || PIM_UPSTREAM_FLAG_TEST_MLAG_INTERFACE(up
->flags
))
962 pim_mlag_up_local_add(pim
, up
);
964 if (PIM_DEBUG_PIM_TRACE
) {
966 "%s: Created Upstream %s upstream_addr %pPAs ref count %d increment",
967 __func__
, up
->sg_str
, &up
->upstream_addr
,
974 uint32_t pim_up_mlag_local_cost(struct pim_upstream
*up
)
976 if (!(pim_up_mlag_is_local(up
))
977 && !(up
->flags
& PIM_UPSTREAM_FLAG_MASK_MLAG_INTERFACE
))
978 return router
->infinite_assert_metric
.route_metric
;
980 if ((up
->rpf
.source_nexthop
.interface
==
981 up
->pim
->vxlan
.peerlink_rif
) &&
982 (up
->rpf
.source_nexthop
.mrib_route_metric
<
983 (router
->infinite_assert_metric
.route_metric
-
984 PIM_UPSTREAM_MLAG_PEERLINK_PLUS_METRIC
)))
985 return up
->rpf
.source_nexthop
.mrib_route_metric
+
986 PIM_UPSTREAM_MLAG_PEERLINK_PLUS_METRIC
;
988 return up
->rpf
.source_nexthop
.mrib_route_metric
;
991 uint32_t pim_up_mlag_peer_cost(struct pim_upstream
*up
)
993 if (!(up
->flags
& PIM_UPSTREAM_FLAG_MASK_MLAG_PEER
))
994 return router
->infinite_assert_metric
.route_metric
;
996 return up
->mlag
.peer_mrib_metric
;
999 struct pim_upstream
*pim_upstream_find(struct pim_instance
*pim
, pim_sgaddr
*sg
)
1001 struct pim_upstream lookup
;
1002 struct pim_upstream
*up
= NULL
;
1005 up
= rb_pim_upstream_find(&pim
->upstream_head
, &lookup
);
1009 struct pim_upstream
*pim_upstream_find_or_add(pim_sgaddr
*sg
,
1010 struct interface
*incoming
,
1011 int flags
, const char *name
)
1013 struct pim_interface
*pim_ifp
= incoming
->info
;
1015 return (pim_upstream_add(pim_ifp
->pim
, sg
, incoming
, flags
, name
,
1019 void pim_upstream_ref(struct pim_upstream
*up
, int flags
, const char *name
)
1021 /* if a local MLAG reference is being created we need to send the mroute
1024 if (!PIM_UPSTREAM_FLAG_TEST_MLAG_VXLAN(up
->flags
) &&
1025 PIM_UPSTREAM_FLAG_TEST_MLAG_VXLAN(flags
)) {
1026 PIM_UPSTREAM_FLAG_SET_MLAG_VXLAN(up
->flags
);
1027 pim_mlag_up_local_add(up
->pim
, up
);
1030 /* when we go from non-FHR to FHR we need to re-eval traffic
1033 if (!PIM_UPSTREAM_FLAG_TEST_FHR(up
->flags
) &&
1034 PIM_UPSTREAM_FLAG_TEST_FHR(flags
)) {
1035 PIM_UPSTREAM_FLAG_SET_FHR(up
->flags
);
1036 pim_upstream_update_use_rpt(up
, true /*update_mroute*/);
1039 /* re-eval joinDesired; clearing peer-msdp-sa flag can
1040 * cause JD to change
1042 if (!PIM_UPSTREAM_FLAG_TEST_SRC_MSDP(up
->flags
) &&
1043 PIM_UPSTREAM_FLAG_TEST_SRC_MSDP(flags
)) {
1044 PIM_UPSTREAM_FLAG_SET_SRC_MSDP(up
->flags
);
1045 pim_upstream_update_join_desired(up
->pim
, up
);
1050 if (PIM_DEBUG_PIM_TRACE
)
1051 zlog_debug("%s(%s): upstream %s ref count %d increment",
1052 __func__
, name
, up
->sg_str
, up
->ref_count
);
1055 struct pim_upstream
*pim_upstream_add(struct pim_instance
*pim
, pim_sgaddr
*sg
,
1056 struct interface
*incoming
, int flags
,
1058 struct pim_ifchannel
*ch
)
1060 struct pim_upstream
*up
= NULL
;
1063 up
= pim_upstream_find(pim
, sg
);
1065 pim_upstream_ref(up
, flags
, name
);
1068 up
= pim_upstream_new(pim
, sg
, incoming
, flags
, ch
);
1071 if (PIM_DEBUG_PIM_TRACE
) {
1073 zlog_debug("%s(%s): %s, iif %pFX (%s) found: %d: ref_count: %d",
1075 up
->sg_str
, &up
->rpf
.rpf_addr
, up
->rpf
.source_nexthop
.interface
?
1076 up
->rpf
.source_nexthop
.interface
->name
: "Unknown" ,
1077 found
, up
->ref_count
);
1079 zlog_debug("%s(%s): (%pSG) failure to create", __func__
,
1087 * Passed in up must be the upstream for ch. starch is NULL if no
1089 * This function is copied over from
1090 * pim_upstream_evaluate_join_desired_interface but limited to
1091 * parent (*,G)'s includes/joins.
1093 int pim_upstream_eval_inherit_if(struct pim_upstream
*up
,
1094 struct pim_ifchannel
*ch
,
1095 struct pim_ifchannel
*starch
)
1097 /* if there is an explicit prune for this interface we cannot
1101 if (PIM_IF_FLAG_TEST_S_G_RPT(ch
->flags
))
1105 /* Check if the OIF can be inherited fron the (*,G) entry
1108 if (!pim_macro_ch_lost_assert(starch
)
1109 && pim_macro_chisin_joins_or_include(starch
))
1117 * Passed in up must be the upstream for ch. starch is NULL if no
1120 int pim_upstream_evaluate_join_desired_interface(struct pim_upstream
*up
,
1121 struct pim_ifchannel
*ch
,
1122 struct pim_ifchannel
*starch
)
1125 if (PIM_IF_FLAG_TEST_S_G_RPT(ch
->flags
))
1128 if (!pim_macro_ch_lost_assert(ch
)
1129 && pim_macro_chisin_joins_or_include(ch
))
1137 /* XXX: check on this with donald
1138 * we are looking for PIM_IF_FLAG_MASK_S_G_RPT in
1142 if (PIM_IF_FLAG_TEST_S_G_RPT(starch
->upstream
->flags
))
1146 if (!pim_macro_ch_lost_assert(starch
)
1147 && pim_macro_chisin_joins_or_include(starch
))
1154 /* Returns true if immediate OIL is empty and is used to evaluate
1155 * JoinDesired. See pim_upstream_evaluate_join_desired.
1157 static bool pim_upstream_empty_immediate_olist(struct pim_instance
*pim
,
1158 struct pim_upstream
*up
)
1160 struct interface
*ifp
;
1161 struct pim_ifchannel
*ch
;
1163 FOR_ALL_INTERFACES (pim
->vrf
, ifp
) {
1167 ch
= pim_ifchannel_find(ifp
, &up
->sg
);
1171 /* If we have even one immediate OIF we can return with
1174 if (pim_upstream_evaluate_join_desired_interface(up
, ch
,
1177 } /* scan iface channel list */
1179 /* immediate_oil is empty */
1184 static inline bool pim_upstream_is_msdp_peer_sa(struct pim_upstream
*up
)
1186 return PIM_UPSTREAM_FLAG_TEST_SRC_MSDP(up
->flags
);
1190 * bool JoinDesired(*,G) {
1191 * if (immediate_olist(*,G) != NULL)
1197 * bool JoinDesired(S,G) {
1198 * return( immediate_olist(S,G) != NULL
1199 * OR ( KeepaliveTimer(S,G) is running
1200 * AND inherited_olist(S,G) != NULL ) )
1203 bool pim_upstream_evaluate_join_desired(struct pim_instance
*pim
,
1204 struct pim_upstream
*up
)
1209 empty_imm_oil
= pim_upstream_empty_immediate_olist(pim
, up
);
1212 if (pim_addr_is_any(up
->sg
.src
))
1213 return !empty_imm_oil
;
1218 empty_inh_oil
= pim_upstream_empty_inherited_olist(up
);
1219 if (!empty_inh_oil
&&
1220 (pim_upstream_is_kat_running(up
) ||
1221 pim_upstream_is_msdp_peer_sa(up
)))
1228 See also pim_upstream_evaluate_join_desired() above.
1230 void pim_upstream_update_join_desired(struct pim_instance
*pim
,
1231 struct pim_upstream
*up
)
1233 int was_join_desired
; /* boolean */
1234 int is_join_desired
; /* boolean */
1236 was_join_desired
= PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(up
->flags
);
1238 is_join_desired
= pim_upstream_evaluate_join_desired(pim
, up
);
1239 if (is_join_desired
)
1240 PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED(up
->flags
);
1242 PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED(up
->flags
);
1244 /* switched from false to true */
1245 if (is_join_desired
&& (up
->join_state
== PIM_UPSTREAM_NOTJOINED
)) {
1246 pim_upstream_switch(pim
, up
, PIM_UPSTREAM_JOINED
);
1250 /* switched from true to false */
1251 if (!is_join_desired
&& was_join_desired
) {
1252 pim_upstream_switch(pim
, up
, PIM_UPSTREAM_NOTJOINED
);
1258 RFC 4601 4.5.7. Sending (S,G) Join/Prune Messages
1259 Transitions from Joined State
1260 RPF'(S,G) GenID changes
1262 The upstream (S,G) state machine remains in Joined state. If the
1263 Join Timer is set to expire in more than t_override seconds, reset
1264 it so that it expires after t_override seconds.
1266 void pim_upstream_rpf_genid_changed(struct pim_instance
*pim
,
1267 pim_addr neigh_addr
)
1269 struct pim_upstream
*up
;
1272 * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr
1274 frr_each (rb_pim_upstream
, &pim
->upstream_head
, up
) {
1277 rpf_addr
= pim_addr_from_prefix(&up
->rpf
.rpf_addr
);
1279 if (PIM_DEBUG_PIM_TRACE
)
1281 "%s: matching neigh=%pPA against upstream (S,G)=%s[%s] joined=%d rpf_addr=%pPA",
1282 __func__
, &neigh_addr
, up
->sg_str
,
1284 up
->join_state
== PIM_UPSTREAM_JOINED
,
1287 /* consider only (S,G) upstream in Joined state */
1288 if (up
->join_state
!= PIM_UPSTREAM_JOINED
)
1291 /* match RPF'(S,G)=neigh_addr */
1292 if (pim_addr_cmp(rpf_addr
, neigh_addr
))
1295 pim_upstream_join_timer_decrease_to_t_override(
1296 "RPF'(S,G) GenID change", up
);
1301 void pim_upstream_rpf_interface_changed(struct pim_upstream
*up
,
1302 struct interface
*old_rpf_ifp
)
1304 struct listnode
*chnode
;
1305 struct listnode
*chnextnode
;
1306 struct pim_ifchannel
*ch
;
1308 /* search all ifchannels */
1309 for (ALL_LIST_ELEMENTS(up
->ifchannels
, chnode
, chnextnode
, ch
)) {
1310 if (ch
->ifassert_state
== PIM_IFASSERT_I_AM_LOSER
) {
1312 /* RPF_interface(S) was NOT I */
1313 (old_rpf_ifp
== ch
->interface
) &&
1314 /* RPF_interface(S) stopped being I */
1315 (ch
->upstream
->rpf
.source_nexthop
1317 (ch
->upstream
->rpf
.source_nexthop
1318 .interface
!= ch
->interface
)) {
1319 assert_action_a5(ch
);
1321 } /* PIM_IFASSERT_I_AM_LOSER */
1323 pim_ifchannel_update_assert_tracking_desired(ch
);
1327 void pim_upstream_update_could_assert(struct pim_upstream
*up
)
1329 struct listnode
*chnode
;
1330 struct listnode
*chnextnode
;
1331 struct pim_ifchannel
*ch
;
1333 /* scan per-interface (S,G) state */
1334 for (ALL_LIST_ELEMENTS(up
->ifchannels
, chnode
, chnextnode
, ch
)) {
1335 pim_ifchannel_update_could_assert(ch
);
1336 } /* scan iface channel list */
1339 void pim_upstream_update_my_assert_metric(struct pim_upstream
*up
)
1341 struct listnode
*chnode
;
1342 struct listnode
*chnextnode
;
1343 struct pim_ifchannel
*ch
;
1345 /* scan per-interface (S,G) state */
1346 for (ALL_LIST_ELEMENTS(up
->ifchannels
, chnode
, chnextnode
, ch
)) {
1347 pim_ifchannel_update_my_assert_metric(ch
);
1349 } /* scan iface channel list */
1352 static void pim_upstream_update_assert_tracking_desired(struct pim_upstream
*up
)
1354 struct listnode
*chnode
;
1355 struct listnode
*chnextnode
;
1356 struct pim_interface
*pim_ifp
;
1357 struct pim_ifchannel
*ch
;
1359 /* scan per-interface (S,G) state */
1360 for (ALL_LIST_ELEMENTS(up
->ifchannels
, chnode
, chnextnode
, ch
)) {
1363 pim_ifp
= ch
->interface
->info
;
1367 pim_ifchannel_update_assert_tracking_desired(ch
);
1369 } /* scan iface channel list */
1372 /* When kat is stopped CouldRegister goes to false so we need to
1373 * transition the (S, G) on FHR to NI state and remove reg tunnel
1375 static void pim_upstream_fhr_kat_expiry(struct pim_instance
*pim
,
1376 struct pim_upstream
*up
)
1378 if (!PIM_UPSTREAM_FLAG_TEST_FHR(up
->flags
))
1381 if (PIM_DEBUG_PIM_TRACE
)
1382 zlog_debug("kat expired on %s; clear fhr reg state",
1385 /* stop reg-stop timer */
1386 THREAD_OFF(up
->t_rs_timer
);
1387 /* remove regiface from the OIL if it is there*/
1388 pim_channel_del_oif(up
->channel_oil
, pim
->regiface
,
1389 PIM_OIF_FLAG_PROTO_PIM
, __func__
);
1390 /* clear the register state */
1391 up
->reg_state
= PIM_REG_NOINFO
;
1392 PIM_UPSTREAM_FLAG_UNSET_FHR(up
->flags
);
1395 /* When kat is started CouldRegister can go to true. And if it does we
1396 * need to transition the (S, G) on FHR to JOINED state and add reg tunnel
1398 static void pim_upstream_fhr_kat_start(struct pim_upstream
*up
)
1400 if (pim_upstream_could_register(up
)) {
1401 if (PIM_DEBUG_PIM_TRACE
)
1403 "kat started on %s; set fhr reg state to joined",
1406 PIM_UPSTREAM_FLAG_SET_FHR(up
->flags
);
1407 if (up
->reg_state
== PIM_REG_NOINFO
)
1408 pim_register_join(up
);
1409 pim_upstream_update_use_rpt(up
, true /*update_mroute*/);
1414 * On an RP, the PMBR value must be cleared when the
1415 * Keepalive Timer expires
1416 * KAT expiry indicates that flow is inactive. If the flow was created or
1417 * maintained by activity now is the time to deref it.
1419 struct pim_upstream
*pim_upstream_keep_alive_timer_proc(
1420 struct pim_upstream
*up
)
1422 struct pim_instance
*pim
;
1424 pim
= up
->channel_oil
->pim
;
1426 if (PIM_UPSTREAM_FLAG_TEST_DISABLE_KAT_EXPIRY(up
->flags
)) {
1427 /* if the router is a PIM vxlan encapsulator we prevent expiry
1428 * of KAT as the mroute is pre-setup without any traffic
1430 pim_upstream_keep_alive_timer_start(up
, pim
->keep_alive_time
);
1434 if (I_am_RP(pim
, up
->sg
.grp
)) {
1435 pim_br_clear_pmbr(&up
->sg
);
1437 * We need to do more here :)
1438 * But this is the start.
1442 /* source is no longer active - pull the SA from MSDP's cache */
1443 pim_msdp_sa_local_del(pim
, &up
->sg
);
1445 /* JoinDesired can change when KAT is started or stopped */
1446 pim_upstream_update_join_desired(pim
, up
);
1448 /* if entry was created because of activity we need to deref it */
1449 if (PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up
->flags
)) {
1450 pim_upstream_fhr_kat_expiry(pim
, up
);
1451 if (PIM_DEBUG_PIM_TRACE
)
1453 "kat expired on %s[%s]; remove stream reference",
1454 up
->sg_str
, pim
->vrf
->name
);
1455 PIM_UPSTREAM_FLAG_UNSET_SRC_STREAM(up
->flags
);
1457 /* Return if upstream entry got deleted.*/
1458 if (!pim_upstream_del(pim
, up
, __func__
))
1461 if (PIM_UPSTREAM_FLAG_TEST_SRC_NOCACHE(up
->flags
)) {
1462 PIM_UPSTREAM_FLAG_UNSET_SRC_NOCACHE(up
->flags
);
1464 if (!pim_upstream_del(pim
, up
, __func__
))
1468 /* upstream reference would have been added to track the local
1469 * membership if it is LHR. We have to clear it when KAT expires.
1470 * Otherwise would result in stale entry with uncleared ref count.
1472 if (PIM_UPSTREAM_FLAG_TEST_SRC_LHR(up
->flags
)) {
1473 struct pim_upstream
*parent
= up
->parent
;
1475 PIM_UPSTREAM_FLAG_UNSET_SRC_LHR(up
->flags
);
1476 up
= pim_upstream_del(pim
, up
, __func__
);
1479 pim_jp_agg_single_upstream_send(&parent
->rpf
, parent
,
1486 static void pim_upstream_keep_alive_timer(struct thread
*t
)
1488 struct pim_upstream
*up
;
1492 /* pull the stats and re-check */
1493 if (pim_upstream_sg_running_proc(up
))
1494 /* kat was restarted because of new activity */
1497 pim_upstream_keep_alive_timer_proc(up
);
1500 void pim_upstream_keep_alive_timer_start(struct pim_upstream
*up
, uint32_t time
)
1502 if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up
->flags
)) {
1503 if (PIM_DEBUG_PIM_TRACE
)
1504 zlog_debug("kat start on %s with no stream reference",
1507 THREAD_OFF(up
->t_ka_timer
);
1508 thread_add_timer(router
->master
, pim_upstream_keep_alive_timer
, up
,
1509 time
, &up
->t_ka_timer
);
1511 /* any time keepalive is started against a SG we will have to
1512 * re-evaluate our active source database */
1513 pim_msdp_sa_local_update(up
);
1514 /* JoinDesired can change when KAT is started or stopped */
1515 pim_upstream_update_join_desired(up
->pim
, up
);
1518 /* MSDP on RP needs to know if a source is registerable to this RP */
1519 static void pim_upstream_msdp_reg_timer(struct thread
*t
)
1521 struct pim_upstream
*up
= THREAD_ARG(t
);
1522 struct pim_instance
*pim
= up
->channel_oil
->pim
;
1524 /* source is no longer active - pull the SA from MSDP's cache */
1525 pim_msdp_sa_local_del(pim
, &up
->sg
);
1528 void pim_upstream_msdp_reg_timer_start(struct pim_upstream
*up
)
1530 THREAD_OFF(up
->t_msdp_reg_timer
);
1531 thread_add_timer(router
->master
, pim_upstream_msdp_reg_timer
, up
,
1532 PIM_MSDP_REG_RXED_PERIOD
, &up
->t_msdp_reg_timer
);
1534 pim_msdp_sa_local_update(up
);
1538 * 4.2.1 Last-Hop Switchover to the SPT
1540 * In Sparse-Mode PIM, last-hop routers join the shared tree towards the
1541 * RP. Once traffic from sources to joined groups arrives at a last-hop
1542 * router, it has the option of switching to receive the traffic on a
1543 * shortest path tree (SPT).
1545 * The decision for a router to switch to the SPT is controlled as
1549 * CheckSwitchToSpt(S,G) {
1550 * if ( ( pim_include(*,G) (-) pim_exclude(S,G)
1551 * (+) pim_include(S,G) != NULL )
1552 * AND SwitchToSptDesired(S,G) ) {
1553 * # Note: Restarting the KAT will result in the SPT switch
1554 * set KeepaliveTimer(S,G) to Keepalive_Period
1558 * SwitchToSptDesired(S,G) is a policy function that is implementation
1559 * defined. An "infinite threshold" policy can be implemented by making
1560 * SwitchToSptDesired(S,G) return false all the time. A "switch on
1561 * first packet" policy can be implemented by making
1562 * SwitchToSptDesired(S,G) return true once a single packet has been
1563 * received for the source and group.
1565 int pim_upstream_switch_to_spt_desired_on_rp(struct pim_instance
*pim
,
1568 if (I_am_RP(pim
, sg
->grp
))
1574 int pim_upstream_is_sg_rpt(struct pim_upstream
*up
)
1576 struct listnode
*chnode
;
1577 struct pim_ifchannel
*ch
;
1579 for (ALL_LIST_ELEMENTS_RO(up
->ifchannels
, chnode
, ch
)) {
1580 if (PIM_IF_FLAG_TEST_S_G_RPT(ch
->flags
))
1587 * After receiving a packet set SPTbit:
1589 * Update_SPTbit(S,G,iif) {
1590 * if ( iif == RPF_interface(S)
1591 * AND JoinDesired(S,G) == true
1592 * AND ( DirectlyConnected(S) == true
1593 * OR RPF_interface(S) != RPF_interface(RP(G))
1594 * OR inherited_olist(S,G,rpt) == NULL
1595 * OR ( ( RPF'(S,G) == RPF'(*,G) ) AND
1596 * ( RPF'(S,G) != NULL ) )
1597 * OR ( I_Am_Assert_Loser(S,G,iif) ) {
1598 * Set SPTbit(S,G) to true
1602 void pim_upstream_set_sptbit(struct pim_upstream
*up
,
1603 struct interface
*incoming
)
1605 struct pim_upstream
*starup
= up
->parent
;
1607 // iif == RPF_interfvace(S)
1608 if (up
->rpf
.source_nexthop
.interface
!= incoming
) {
1609 if (PIM_DEBUG_PIM_TRACE
)
1611 "%s: Incoming Interface: %s is different than RPF_interface(S) %s",
1612 __func__
, incoming
->name
,
1613 up
->rpf
.source_nexthop
.interface
->name
);
1617 // AND JoinDesired(S,G) == true
1618 if (!pim_upstream_evaluate_join_desired(up
->channel_oil
->pim
, up
)) {
1619 if (PIM_DEBUG_PIM_TRACE
)
1620 zlog_debug("%s: %s Join is not Desired", __func__
,
1625 // DirectlyConnected(S) == true
1626 if (pim_if_connected_to_source(up
->rpf
.source_nexthop
.interface
,
1628 if (PIM_DEBUG_PIM_TRACE
)
1629 zlog_debug("%s: %s is directly connected to the source",
1630 __func__
, up
->sg_str
);
1631 up
->sptbit
= PIM_UPSTREAM_SPTBIT_TRUE
;
1635 // OR RPF_interface(S) != RPF_interface(RP(G))
1637 || up
->rpf
.source_nexthop
1638 .interface
!= starup
->rpf
.source_nexthop
.interface
) {
1639 struct pim_upstream
*starup
= up
->parent
;
1641 if (PIM_DEBUG_PIM_TRACE
)
1643 "%s: %s RPF_interface(S) != RPF_interface(RP(G))",
1644 __func__
, up
->sg_str
);
1645 up
->sptbit
= PIM_UPSTREAM_SPTBIT_TRUE
;
1647 pim_jp_agg_single_upstream_send(&starup
->rpf
, starup
, true);
1651 // OR inherited_olist(S,G,rpt) == NULL
1652 if (pim_upstream_is_sg_rpt(up
)
1653 && pim_upstream_empty_inherited_olist(up
)) {
1654 if (PIM_DEBUG_PIM_TRACE
)
1655 zlog_debug("%s: %s OR inherited_olist(S,G,rpt) == NULL",
1656 __func__
, up
->sg_str
);
1657 up
->sptbit
= PIM_UPSTREAM_SPTBIT_TRUE
;
1661 // OR ( ( RPF'(S,G) == RPF'(*,G) ) AND
1662 // ( RPF'(S,G) != NULL ) )
1663 if (up
->parent
&& pim_rpf_is_same(&up
->rpf
, &up
->parent
->rpf
)) {
1664 if (PIM_DEBUG_PIM_TRACE
)
1665 zlog_debug("%s: %s RPF'(S,G) is the same as RPF'(*,G)",
1666 __func__
, up
->sg_str
);
1667 up
->sptbit
= PIM_UPSTREAM_SPTBIT_TRUE
;
1674 const char *pim_upstream_state2str(enum pim_upstream_state join_state
)
1676 switch (join_state
) {
1677 case PIM_UPSTREAM_NOTJOINED
:
1679 case PIM_UPSTREAM_JOINED
:
1685 const char *pim_reg_state2str(enum pim_reg_state reg_state
, char *state_str
,
1686 size_t state_str_len
)
1688 switch (reg_state
) {
1689 case PIM_REG_NOINFO
:
1690 strlcpy(state_str
, "RegNoInfo", state_str_len
);
1693 strlcpy(state_str
, "RegJoined", state_str_len
);
1695 case PIM_REG_JOIN_PENDING
:
1696 strlcpy(state_str
, "RegJoinPend", state_str_len
);
1699 strlcpy(state_str
, "RegPrune", state_str_len
);
1705 static void pim_upstream_register_stop_timer(struct thread
*t
)
1707 struct pim_interface
*pim_ifp
;
1708 struct pim_instance
*pim
;
1709 struct pim_upstream
*up
;
1711 pim
= up
->channel_oil
->pim
;
1713 if (PIM_DEBUG_PIM_TRACE
) {
1714 char state_str
[PIM_REG_STATE_STR_LEN
];
1715 zlog_debug("%s: (S,G)=%s[%s] upstream register stop timer %s",
1716 __func__
, up
->sg_str
, pim
->vrf
->name
,
1717 pim_reg_state2str(up
->reg_state
, state_str
,
1718 sizeof(state_str
)));
1721 switch (up
->reg_state
) {
1722 case PIM_REG_JOIN_PENDING
:
1723 up
->reg_state
= PIM_REG_JOIN
;
1724 pim_channel_add_oif(up
->channel_oil
, pim
->regiface
,
1725 PIM_OIF_FLAG_PROTO_PIM
,
1727 pim_vxlan_update_sg_reg_state(pim
, up
, true /*reg_join*/);
1732 /* This is equalent to Couldreg -> False */
1733 if (!up
->rpf
.source_nexthop
.interface
) {
1734 if (PIM_DEBUG_PIM_TRACE
)
1735 zlog_debug("%s: up %s RPF is not present",
1736 __func__
, up
->sg_str
);
1737 up
->reg_state
= PIM_REG_NOINFO
;
1741 pim_ifp
= up
->rpf
.source_nexthop
.interface
->info
;
1743 if (PIM_DEBUG_PIM_TRACE
)
1745 "%s: Interface: %s is not configured for pim",
1747 up
->rpf
.source_nexthop
.interface
->name
);
1750 up
->reg_state
= PIM_REG_JOIN_PENDING
;
1751 pim_upstream_start_register_stop_timer(up
, 1);
1753 if (((up
->channel_oil
->cc
.lastused
/ 100)
1754 > pim
->keep_alive_time
)
1755 && (I_am_RP(pim_ifp
->pim
, up
->sg
.grp
))) {
1756 if (PIM_DEBUG_PIM_TRACE
)
1758 "%s: Stop sending the register, because I am the RP and we haven't seen a packet in a while",
1762 pim_null_register_send(up
);
1764 case PIM_REG_NOINFO
:
1769 void pim_upstream_start_register_stop_timer(struct pim_upstream
*up
,
1774 THREAD_OFF(up
->t_rs_timer
);
1776 if (!null_register
) {
1777 uint32_t lower
= (0.5 * router
->register_suppress_time
);
1778 uint32_t upper
= (1.5 * router
->register_suppress_time
);
1779 time
= lower
+ (frr_weak_random() % (upper
- lower
+ 1));
1780 /* Make sure we don't wrap around */
1781 if (time
>= router
->register_probe_time
)
1782 time
-= router
->register_probe_time
;
1786 time
= router
->register_probe_time
;
1788 if (PIM_DEBUG_PIM_TRACE
) {
1790 "%s: (S,G)=%s Starting upstream register stop timer %d",
1791 __func__
, up
->sg_str
, time
);
1793 thread_add_timer(router
->master
, pim_upstream_register_stop_timer
, up
,
1794 time
, &up
->t_rs_timer
);
1797 int pim_upstream_inherited_olist_decide(struct pim_instance
*pim
,
1798 struct pim_upstream
*up
)
1800 struct interface
*ifp
;
1801 struct pim_ifchannel
*ch
, *starch
;
1802 struct pim_upstream
*starup
= up
->parent
;
1803 int output_intf
= 0;
1805 if (!up
->rpf
.source_nexthop
.interface
)
1806 if (PIM_DEBUG_PIM_TRACE
)
1807 zlog_debug("%s: up %s RPF is not present", __func__
,
1810 FOR_ALL_INTERFACES (pim
->vrf
, ifp
) {
1811 struct pim_interface
*pim_ifp
;
1815 ch
= pim_ifchannel_find(ifp
, &up
->sg
);
1818 starch
= pim_ifchannel_find(ifp
, &starup
->sg
);
1825 pim_ifp
= ifp
->info
;
1826 if (PIM_I_am_DualActive(pim_ifp
)
1827 && PIM_UPSTREAM_FLAG_TEST_MLAG_INTERFACE(up
->flags
)
1828 && (PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(up
->flags
)
1829 || !PIM_UPSTREAM_FLAG_TEST_MLAG_PEER(up
->flags
)))
1831 if (pim_upstream_evaluate_join_desired_interface(up
, ch
,
1836 flag
= PIM_OIF_FLAG_PROTO_STAR
;
1838 if (PIM_IF_FLAG_TEST_PROTO_IGMP(ch
->flags
))
1839 flag
= PIM_OIF_FLAG_PROTO_GM
;
1840 if (PIM_IF_FLAG_TEST_PROTO_PIM(ch
->flags
))
1841 flag
|= PIM_OIF_FLAG_PROTO_PIM
;
1843 flag
|= PIM_OIF_FLAG_PROTO_STAR
;
1846 pim_channel_add_oif(up
->channel_oil
, ifp
, flag
,
1856 * For a given upstream, determine the inherited_olist
1859 * inherited_olist(S,G,rpt) =
1860 * ( joins(*,*,RP(G)) (+) joins(*,G) (-) prunes(S,G,rpt) )
1861 * (+) ( pim_include(*,G) (-) pim_exclude(S,G))
1862 * (-) ( lost_assert(*,G) (+) lost_assert(S,G,rpt) )
1864 * inherited_olist(S,G) =
1865 * inherited_olist(S,G,rpt) (+)
1866 * joins(S,G) (+) pim_include(S,G) (-) lost_assert(S,G)
1868 * return 1 if there are any output interfaces
1869 * return 0 if there are not any output interfaces
1871 int pim_upstream_inherited_olist(struct pim_instance
*pim
,
1872 struct pim_upstream
*up
)
1874 int output_intf
= pim_upstream_inherited_olist_decide(pim
, up
);
1877 * If we have output_intf switch state to Join and work like normal
1878 * If we don't have an output_intf that means we are probably a
1879 * switch on a stick so turn on forwarding to just accept the
1880 * incoming packets so we don't bother the other stuff!
1882 pim_upstream_update_join_desired(pim
, up
);
1890 int pim_upstream_empty_inherited_olist(struct pim_upstream
*up
)
1892 return pim_channel_oil_empty(up
->channel_oil
);
1896 * When we have a new neighbor,
1897 * find upstreams that don't have their rpf_addr
1898 * set and see if the new neighbor allows
1899 * the join to be sent
1901 void pim_upstream_find_new_rpf(struct pim_instance
*pim
)
1903 struct pim_upstream
*up
;
1905 enum pim_rpf_result rpf_result
;
1908 * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr
1910 frr_each (rb_pim_upstream
, &pim
->upstream_head
, up
) {
1911 if (pim_addr_is_any(up
->upstream_addr
)) {
1912 if (PIM_DEBUG_PIM_TRACE
)
1914 "%s: RP not configured for Upstream %s",
1915 __func__
, up
->sg_str
);
1919 if (pim_rpf_addr_is_inaddr_any(&up
->rpf
)) {
1920 if (PIM_DEBUG_PIM_TRACE
)
1922 "%s: Upstream %s without a path to send join, checking",
1923 __func__
, up
->sg_str
);
1924 old
.source_nexthop
.interface
=
1925 up
->rpf
.source_nexthop
.interface
;
1926 rpf_result
= pim_rpf_update(pim
, up
, &old
, __func__
);
1927 if (rpf_result
== PIM_RPF_CHANGED
||
1928 (rpf_result
== PIM_RPF_FAILURE
&&
1929 old
.source_nexthop
.interface
))
1930 pim_zebra_upstream_rpf_changed(pim
, up
, &old
);
1931 /* update kernel multicast forwarding cache (MFC) */
1932 pim_upstream_mroute_iif_update(up
->channel_oil
,
1936 pim_zebra_update_all_interfaces(pim
);
1939 unsigned int pim_upstream_hash_key(const void *arg
)
1941 const struct pim_upstream
*up
= arg
;
1943 return pim_sgaddr_hash(up
->sg
, 0);
1946 void pim_upstream_terminate(struct pim_instance
*pim
)
1948 struct pim_upstream
*up
;
1950 while ((up
= rb_pim_upstream_first(&pim
->upstream_head
))) {
1951 pim_upstream_del(pim
, up
, __func__
);
1952 pim_upstream_timers_stop(up
);
1955 rb_pim_upstream_fini(&pim
->upstream_head
);
1957 if (pim
->upstream_sg_wheel
)
1958 wheel_delete(pim
->upstream_sg_wheel
);
1959 pim
->upstream_sg_wheel
= NULL
;
1962 bool pim_upstream_equal(const void *arg1
, const void *arg2
)
1964 const struct pim_upstream
*up1
= (const struct pim_upstream
*)arg1
;
1965 const struct pim_upstream
*up2
= (const struct pim_upstream
*)arg2
;
1967 return !pim_sgaddr_cmp(up1
->sg
, up2
->sg
);
1970 /* rfc4601:section-4.2:"Data Packet Forwarding Rules" defines
1971 * the cases where kat has to be restarted on rxing traffic -
1973 * if( DirectlyConnected(S) == true AND iif == RPF_interface(S) ) {
1974 * set KeepaliveTimer(S,G) to Keepalive_Period
1975 * # Note: a register state transition or UpstreamJPState(S,G)
1976 * # transition may happen as a result of restarting
1977 * # KeepaliveTimer, and must be dealt with here.
1979 * if( iif == RPF_interface(S) AND UpstreamJPState(S,G) == Joined AND
1980 * inherited_olist(S,G) != NULL ) {
1981 * set KeepaliveTimer(S,G) to Keepalive_Period
1984 static bool pim_upstream_kat_start_ok(struct pim_upstream
*up
)
1986 struct channel_oil
*c_oil
= up
->channel_oil
;
1987 struct interface
*ifp
= up
->rpf
.source_nexthop
.interface
;
1988 struct pim_interface
*pim_ifp
;
1990 /* "iif == RPF_interface(S)" check is not easy to do as the info
1991 * we get from the kernel/ASIC is really a "lookup/key hit".
1992 * So we will do an approximate check here to avoid starting KAT
1993 * because of (S,G,rpt) forwarding on a non-LHR.
1998 pim_ifp
= ifp
->info
;
1999 if (pim_ifp
->mroute_vif_index
!= *oil_parent(c_oil
))
2002 if (pim_if_connected_to_source(up
->rpf
.source_nexthop
.interface
,
2007 if ((up
->join_state
== PIM_UPSTREAM_JOINED
)
2008 && !pim_upstream_empty_inherited_olist(up
)) {
2015 static bool pim_upstream_sg_running_proc(struct pim_upstream
*up
)
2018 struct pim_instance
*pim
= up
->pim
;
2020 if (!up
->channel_oil
->installed
)
2023 pim_mroute_update_counters(up
->channel_oil
);
2025 // Have we seen packets?
2026 if ((up
->channel_oil
->cc
.oldpktcnt
>= up
->channel_oil
->cc
.pktcnt
)
2027 && (up
->channel_oil
->cc
.lastused
/ 100 > 30)) {
2028 if (PIM_DEBUG_PIM_TRACE
) {
2030 "%s[%s]: %s old packet count is equal or lastused is greater than 30, (%ld,%ld,%lld)",
2031 __func__
, up
->sg_str
, pim
->vrf
->name
,
2032 up
->channel_oil
->cc
.oldpktcnt
,
2033 up
->channel_oil
->cc
.pktcnt
,
2034 up
->channel_oil
->cc
.lastused
/ 100);
2039 if (pim_upstream_kat_start_ok(up
)) {
2040 /* Add a source reference to the stream if
2041 * one doesn't already exist */
2042 if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up
->flags
)) {
2043 if (PIM_DEBUG_PIM_TRACE
)
2045 "source reference created on kat restart %s[%s]",
2046 up
->sg_str
, pim
->vrf
->name
);
2048 pim_upstream_ref(up
, PIM_UPSTREAM_FLAG_MASK_SRC_STREAM
,
2050 PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up
->flags
);
2051 pim_upstream_fhr_kat_start(up
);
2053 pim_upstream_keep_alive_timer_start(up
, pim
->keep_alive_time
);
2055 } else if (PIM_UPSTREAM_FLAG_TEST_SRC_LHR(up
->flags
)) {
2056 pim_upstream_keep_alive_timer_start(up
, pim
->keep_alive_time
);
2060 if ((up
->sptbit
!= PIM_UPSTREAM_SPTBIT_TRUE
) &&
2061 (up
->rpf
.source_nexthop
.interface
)) {
2062 pim_upstream_set_sptbit(up
, up
->rpf
.source_nexthop
.interface
);
2063 pim_upstream_update_could_assert(up
);
2070 * Code to check and see if we've received packets on a S,G mroute
2071 * and if so to set the SPT bit appropriately
2073 static void pim_upstream_sg_running(void *arg
)
2075 struct pim_upstream
*up
= (struct pim_upstream
*)arg
;
2076 struct pim_instance
*pim
= up
->channel_oil
->pim
;
2078 // No packet can have arrived here if this is the case
2079 if (!up
->channel_oil
->installed
) {
2080 if (PIM_DEBUG_TRACE
)
2081 zlog_debug("%s: %s%s is not installed in mroute",
2082 __func__
, up
->sg_str
, pim
->vrf
->name
);
2087 * This is a bit of a hack
2088 * We've noted that we should rescan but
2089 * we've missed the window for doing so in
2090 * pim_zebra.c for some reason. I am
2091 * only doing this at this point in time
2092 * to get us up and working for the moment
2094 if (up
->channel_oil
->oil_inherited_rescan
) {
2095 if (PIM_DEBUG_TRACE
)
2097 "%s: Handling unscanned inherited_olist for %s[%s]",
2098 __func__
, up
->sg_str
, pim
->vrf
->name
);
2099 pim_upstream_inherited_olist_decide(pim
, up
);
2100 up
->channel_oil
->oil_inherited_rescan
= 0;
2103 pim_upstream_sg_running_proc(up
);
2106 void pim_upstream_add_lhr_star_pimreg(struct pim_instance
*pim
)
2108 struct pim_upstream
*up
;
2110 frr_each (rb_pim_upstream
, &pim
->upstream_head
, up
) {
2111 if (!pim_addr_is_any(up
->sg
.src
))
2114 if (!PIM_UPSTREAM_FLAG_TEST_CAN_BE_LHR(up
->flags
))
2117 pim_channel_add_oif(up
->channel_oil
, pim
->regiface
,
2118 PIM_OIF_FLAG_PROTO_GM
, __func__
);
2122 void pim_upstream_spt_prefix_list_update(struct pim_instance
*pim
,
2123 struct prefix_list
*pl
)
2125 const char *pname
= prefix_list_name(pl
);
2127 if (pim
->spt
.plist
&& strcmp(pim
->spt
.plist
, pname
) == 0) {
2128 pim_upstream_remove_lhr_star_pimreg(pim
, pname
);
2133 * nlist -> The new prefix list
2135 * Per Group Application of pimreg to the OIL
2136 * If the prefix list tells us DENY then
2137 * we need to Switchover to SPT immediate
2138 * so add the pimreg.
2139 * If the prefix list tells us to ACCEPT than
2140 * we need to Never do the SPT so remove
2144 void pim_upstream_remove_lhr_star_pimreg(struct pim_instance
*pim
,
2147 struct pim_upstream
*up
;
2148 struct prefix_list
*np
;
2150 enum prefix_list_type apply_new
;
2152 np
= prefix_list_lookup(PIM_AFI
, nlist
);
2154 frr_each (rb_pim_upstream
, &pim
->upstream_head
, up
) {
2155 if (!pim_addr_is_any(up
->sg
.src
))
2158 if (!PIM_UPSTREAM_FLAG_TEST_CAN_BE_LHR(up
->flags
))
2162 pim_channel_del_oif(up
->channel_oil
, pim
->regiface
,
2163 PIM_OIF_FLAG_PROTO_GM
, __func__
);
2166 pim_addr_to_prefix(&g
, up
->sg
.grp
);
2167 apply_new
= prefix_list_apply(np
, &g
);
2168 if (apply_new
== PREFIX_DENY
)
2169 pim_channel_add_oif(up
->channel_oil
, pim
->regiface
,
2170 PIM_OIF_FLAG_PROTO_GM
, __func__
);
2172 pim_channel_del_oif(up
->channel_oil
, pim
->regiface
,
2173 PIM_OIF_FLAG_PROTO_GM
, __func__
);
2177 void pim_upstream_init(struct pim_instance
*pim
)
2181 snprintf(name
, sizeof(name
), "PIM %s Timer Wheel", pim
->vrf
->name
);
2182 pim
->upstream_sg_wheel
=
2183 wheel_init(router
->master
, 31000, 100, pim_upstream_hash_key
,
2184 pim_upstream_sg_running
, name
);
2186 rb_pim_upstream_init(&pim
->upstream_head
);