When an LSA is flushed we need to update the timestamps for them. This

allows for the node to give the neighbor sufficient time to send back
an acknowledgement before retransmission kicks in.

Signed-off-by: Dinesh G Dutt <ddutt@cumulusnetworks.com>
Reviewed-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Reviewed-by: James Li <jli@cumulusnetworks.com>

diff --git a/ospfd/ospf_flood.c b/ospfd/ospf_flood.c
index 2c33b00ef9c2ec14be35460fe7ce60e5744c60a7..d18314a9d9253a24e444593ece62a84adaf3e9c8 100644 (file)
--- a/ospfd/ospf_flood.c
+++ b/ospfd/ospf_flood.c
@@ -980,7 +980,12 @@ ospf_ls_retransmit_delete_nbr_as (struct ospf *ospf, struct ospf_lsa *lsa)
 void
 ospf_lsa_flush_area (struct ospf_lsa *lsa, struct ospf_area *area)
 {
+  /* Reset the lsa origination time such that it gives
+     more time for the ACK to be received and avoid
+     retransmissions */
   lsa->data->ls_age = htons (OSPF_LSA_MAXAGE);
+  lsa->tv_recv = recent_relative_time ();
+  lsa->tv_orig = lsa->tv_recv;
   ospf_flood_through_area (area, NULL, lsa);
   ospf_lsa_maxage (area->ospf, lsa);
 }
@@ -988,7 +993,12 @@ ospf_lsa_flush_area (struct ospf_lsa *lsa, struct ospf_area *area)
 void
 ospf_lsa_flush_as (struct ospf *ospf, struct ospf_lsa *lsa)
 {
+  /* Reset the lsa origination time such that it gives
+     more time for the ACK to be received and avoid
+     retransmissions */
   lsa->data->ls_age = htons (OSPF_LSA_MAXAGE);
+  lsa->tv_recv = recent_relative_time ();
+  lsa->tv_orig = lsa->tv_recv;
   ospf_flood_through_as (ospf, NULL, lsa);
   ospf_lsa_maxage (ospf, lsa);
 }