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pimd: re-eval JD on sources when a STAR_OIF is removed

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When a inherited OIL becomes empty join-desired can go to false. So
we need to re-run join-desired evaluation on any inherited OIL changes.

Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
This commit is contained in:
Anuradha Karuppiah 2019-11-15 11:43:27 -08:00
parent d86632fba3
commit 1537a66871
4 changed files with 31 additions and 20 deletions
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30
pimd/pim_ifchannel.c
View File

@ -162,10 +162,10 @@ void pim_ifchannel_delete(struct pim_ifchannel *ch)
for (ALL_LIST_ELEMENTS_RO(ch->upstream->sources,
up_node, child))
pim_channel_del_oif(child->channel_oil,
ch->interface,
PIM_OIF_FLAG_PROTO_STAR,
__func__);
pim_channel_del_inherited_oif(
child->channel_oil,
ch->interface,
__func__);
}
}
@ -305,9 +305,8 @@ void pim_ifchannel_ifjoin_switch(const char *caller, struct pim_ifchannel *ch,
*/
if (c_oil->oil.mfcc_ttls
[pim_ifp->mroute_vif_index])
pim_channel_del_oif(
pim_channel_del_inherited_oif(
c_oil, ch->interface,
PIM_OIF_FLAG_PROTO_STAR,
__func__);
}
}
@ -1182,24 +1181,19 @@ void pim_ifchannel_local_membership_del(struct interface *ifp,
child->sg_str);
ch = pim_ifchannel_find(ifp, &child->sg);
if (c_oil
&& !pim_upstream_evaluate_join_desired_interface(
child, ch, starch))
pim_channel_del_oif(c_oil, ifp,
PIM_OIF_FLAG_PROTO_STAR,
__func__);
/*
* If the S,G has no if channel and the c_oil still
* has output here then the *,G was supplying the
* implied
* if channel. So remove it.
*/
if (!chchannel && c_oil
&& c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index])
pim_channel_del_oif(c_oil, ifp,
PIM_OIF_FLAG_PROTO_STAR,
__func__);
if (!pim_upstream_evaluate_join_desired_interface(
child, ch, starch) ||
(!chchannel &&
c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index])) {
pim_channel_del_inherited_oif(c_oil, ifp,
__func__);
}
/* Child node removal/ref count-- will happen as part of
* parent' delete_no_info */

3
pimd/pim_join.c
View File

@ -337,10 +337,9 @@ int pim_joinprune_recv(struct interface *ifp, struct pim_neighbor *neigh,
"%s: SGRpt flag is set, del inherit oif from up %s",
__PRETTY_FUNCTION__,
up->sg_str);
pim_channel_del_oif(
pim_channel_del_inherited_oif(
up->channel_oil,
starg_ch->interface,
PIM_OIF_FLAG_PROTO_STAR,
__func__);
}
}

15
pimd/pim_oil.c
View File

@ -352,6 +352,21 @@ int pim_channel_del_oif(struct channel_oil *channel_oil, struct interface *oif,
return 0;
}
void pim_channel_del_inherited_oif(struct channel_oil *c_oil,
struct interface *oif, const char *caller)
{
struct pim_upstream *up = c_oil->up;
pim_channel_del_oif(c_oil, oif, PIM_OIF_FLAG_PROTO_STAR,
caller);
/* if an inherited OIF is being removed join-desired can change
* if the inherited OIL is now empty and KAT is running
*/
if (up && up->sg.src.s_addr != INADDR_ANY &&
pim_upstream_empty_inherited_olist(up))
pim_upstream_update_join_desired(up->pim, up);
}
static bool pim_channel_eval_oif_mute(struct channel_oil *c_oil,
struct pim_interface *pim_ifp)

3
pimd/pim_oil.h
View File

@ -136,4 +136,7 @@ void pim_channel_update_oif_mute(struct channel_oil *c_oil,
struct pim_interface *pim_ifp);
void pim_channel_oil_upstream_deref(struct channel_oil *c_oil);
void pim_channel_del_inherited_oif(struct channel_oil *c_oil,
struct interface *oif, const char *caller);
#endif /* PIM_OIL_H */