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pimd: Ensure packet received on vrf interface is configured for pim

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In a vrf configuration, when we receive a pim packet we lookup
the correct incoming interface.  There exists a chance that
the correct incoming interface has not been configured to use
pim yet.  gracefully bow out and do nothing with the packet.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2017-06-13 13:49:38 -04:00
parent e0ae31b886
commit a5b6bd2be3
1 changed files with 7 additions and 1 deletions
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8
pimd/pim_pim.c
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@ -327,7 +327,13 @@ static int pim_sock_read(struct thread *t)
* it's the right interface because we bind to it
*/
ifp = if_lookup_by_index(ifindex, pim_ifp->pim->vrf_id);
if (!ifp->info) {
if (PIM_DEBUG_PIM_PACKETS)
zlog_debug(
"%s: Received incoming pim packet on interface not yet configured for pim %s",
__PRETTY_FUNCTION__, ifp->name);
goto done;
}
int fail = pim_pim_packet(ifp, buf, len);
if (fail) {
if (PIM_DEBUG_PIM_PACKETS)