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pimd: ch->upstream cannot be NULL

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in pim_ifchannel.c there exists several spots where
the ch->upstream is assumed to be NULL.  This is not
possible.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This commit is contained in:
Donald Sharp 2022-08-15 11:39:14 -04:00
parent 7fc3f834e9
commit 29b458ef1f
1 changed files with 23 additions and 29 deletions
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6
pimd/pim_ifchannel.c
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@ -539,10 +539,7 @@ struct pim_ifchannel *pim_ifchannel_add(struct interface *ifp, pim_sgaddr *sg,
if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_IGMP)
PIM_IF_FLAG_SET_PROTO_IGMP(ch->flags); PIM_IF_FLAG_SET_PROTO_IGMP(ch->flags);
if (ch->upstream)
ch->upstream->flags |= up_flags; ch->upstream->flags |= up_flags;
else if (PIM_DEBUG_EVENTS)
zlog_debug("%s:%pSG No Upstream found", __func__, sg);
return ch; return ch;
} }
@ -637,7 +634,6 @@ static void ifjoin_to_noinfo(struct pim_ifchannel *ch)
pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_NOINFO); pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_NOINFO);
pim_forward_stop(ch); pim_forward_stop(ch);
if (ch->upstream)
PIM_UPSTREAM_FLAG_UNSET_SRC_PIM(ch->upstream->flags); PIM_UPSTREAM_FLAG_UNSET_SRC_PIM(ch->upstream->flags);
PIM_IF_FLAG_UNSET_PROTO_PIM(ch->flags); PIM_IF_FLAG_UNSET_PROTO_PIM(ch->flags);
@ -696,7 +692,6 @@ static void on_ifjoin_prune_pending_timer(struct thread *t)
* message on RP path upon prune timer expiry. * message on RP path upon prune timer expiry.
*/ */
ch->ifjoin_state = PIM_IFJOIN_PRUNE; ch->ifjoin_state = PIM_IFJOIN_PRUNE;
if (ch->upstream) {
struct pim_upstream *parent = struct pim_upstream *parent =
ch->upstream->parent; ch->upstream->parent;
@ -721,7 +716,6 @@ static void on_ifjoin_prune_pending_timer(struct thread *t)
ch->upstream->channel_oil, ch->upstream->channel_oil,
__func__); __func__);
} }
}
/* from here ch may have been deleted */ /* from here ch may have been deleted */
} }
} }