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Merge pull request #6018 from sarav511/rp_nomatch

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pimd: (*, G) Prune should be processed even if the RP in packet is not RP(G)
This commit is contained in:
Donald Sharp 2020-03-23 19:28:23 -04:00 committed by GitHub
commit b51f20106c
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1 changed files with 11 additions and 10 deletions
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21
pimd/pim_join.c
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@ -140,18 +140,19 @@ static void recv_prune(struct interface *ifp, struct pim_neighbor *neigh,
if ((source_flags & PIM_RPT_BIT_MASK)
&& (source_flags & PIM_WILDCARD_BIT_MASK)) {
struct pim_rpf *rp = RP(pim_ifp->pim, sg->grp);
/*
* RFC 4601 Section 4.5.2:
* Received Prune(*,G) messages are processed even if the
* RP in the message does not match RP(G).
*/
if (PIM_DEBUG_PIM_TRACE) {
char received_rp[INET_ADDRSTRLEN];
if (!rp) {
if (PIM_DEBUG_PIM_TRACE)
zlog_debug(
"%s: RP for %pSG4 completely failed lookup",
__func__, sg);
return;
pim_inet4_dump("<received?>", sg->src, received_rp,
sizeof(received_rp));
zlog_debug("%s: Prune received with RP(%s) for %pSG4",
__func__, received_rp, sg);
}
// Ignoring Prune *,G's at the moment.
if (sg->src.s_addr != rp->rpf_addr.u.prefix4.s_addr)
return;
sg->src.s_addr = INADDR_ANY;
}