72 lines
2.2 KiB
Diff
72 lines
2.2 KiB
Diff
From eb3e472904e30f35825f08319608217082d4af21 Mon Sep 17 00:00:00 2001
|
||
From: Radhika Mahankali <radhika@cumulusnetworks.com>
|
||
Date: Mon, 9 Apr 2018 15:30:32 -0700
|
||
Subject: [PATCH] ospf: BFD down not tearing down OSPF adjacency for
|
||
point-to-point network
|
||
MIME-Version: 1.0
|
||
Content-Type: text/plain; charset=UTF-8
|
||
Content-Transfer-Encoding: 8bit
|
||
|
||
Root Cause:
|
||
Lookup for the point-to-point neighbor was failing because the neighbor
|
||
lookup was based on neighbor interface IP address. But, for point-to-point
|
||
neighbor the key is router-id for lookup. Lookup failure was causing the
|
||
BFD updates from PTM to get dropped.
|
||
|
||
Fix:
|
||
Added walk of the neighbor list if the network type is point-to-point to
|
||
find the appropriate neighbor. The match is based on source IP address of
|
||
the neighbor since that’s the address registered with BFD for monitoring.
|
||
|
||
Ticket: CM-20411
|
||
Signed-off-by: Radhika Mahankali <radhika@cumulusnetworks.com>
|
||
---
|
||
ospfd/ospf_bfd.c | 26 ++++++++++++++++++++++++--
|
||
1 file changed, 24 insertions(+), 2 deletions(-)
|
||
|
||
diff --git a/ospfd/ospf_bfd.c b/ospfd/ospf_bfd.c
|
||
index a17975270a..05ec4991e5 100644
|
||
--- a/ospfd/ospf_bfd.c
|
||
+++ b/ospfd/ospf_bfd.c
|
||
@@ -202,8 +202,9 @@ static int ospf_bfd_interface_dest_update(ZAPI_CALLBACK_ARGS)
|
||
struct interface *ifp;
|
||
struct ospf_interface *oi;
|
||
struct ospf_if_params *params;
|
||
- struct ospf_neighbor *nbr;
|
||
+ struct ospf_neighbor *nbr = NULL;
|
||
struct route_node *node;
|
||
+ struct route_node *n_node;
|
||
struct prefix p;
|
||
int status;
|
||
int old_status;
|
||
@@ -231,7 +232,28 @@ static int ospf_bfd_interface_dest_update(ZAPI_CALLBACK_ARGS)
|
||
if ((oi = node->info) == NULL)
|
||
continue;
|
||
|
||
- nbr = ospf_nbr_lookup_by_addr(oi->nbrs, &p.u.prefix4);
|
||
+ /* walk the neighbor list for point-to-point network */
|
||
+ if (oi->type == OSPF_IFTYPE_POINTOPOINT) {
|
||
+ for (n_node = route_top(oi->nbrs); n_node;
|
||
+ n_node = route_next(n_node)) {
|
||
+ nbr = n_node->info;
|
||
+ if (nbr) {
|
||
+ /* skip myself */
|
||
+ if (nbr == oi->nbr_self) {
|
||
+ nbr = NULL;
|
||
+ continue;
|
||
+ }
|
||
+
|
||
+ /* Found the matching neighbor */
|
||
+ if (nbr->src.s_addr ==
|
||
+ p.u.prefix4.s_addr)
|
||
+ break;
|
||
+ }
|
||
+ }
|
||
+ } else {
|
||
+ nbr = ospf_nbr_lookup_by_addr(oi->nbrs, &p.u.prefix4);
|
||
+ }
|
||
+
|
||
if (!nbr || !nbr->bfd_info)
|
||
continue;
|
||
|