OSPF: Opaque LSAs and Router Information LSA

Add support for OSPFv2 Opaque LSAs (RFC 5250) and for Router Information
LSA (RFC 7770). The second part is here mainly for testing opaque LSAs.

1 files changed, 5 insertions, 4 deletions

diff --git a/proto/ospf/lsupd.c b/proto/ospf/lsupd.c
index a98c9098..7318b751 100644
--- a/proto/ospf/lsupd.c
+++ b/proto/ospf/lsupd.c
@@ -171,7 +171,8 @@ ospf_add_flushed_to_lsrt(struct ospf_proto *p, struct ospf_neighbor *n)
 
   WALK_SLIST(en, p->lsal)
     if ((en->lsa.age == LSA_MAXAGE) && (en->lsa_body != NULL) &&
-	lsa_flooding_allowed(en->lsa_type, en->domain, n->ifa))
+	lsa_flooding_allowed(en->lsa_type, en->domain, n->ifa) &&
+        lsa_is_acceptable(en->lsa_type, n, p))
       ospf_lsa_lsrt_up(en, n);
 
   /* If we found any flushed LSA, we send them ASAP */
@@ -287,9 +288,9 @@ ospf_flood_lsa(struct ospf_proto *p, struct top_hash_entry *en, struct ospf_neig
       if (n == from)
 	continue;
 
-      /* In OSPFv3, there should be check whether receiving router understand
-	 that type of LSA (for LSA types with U-bit == 0). But as we do not support
-	 any optional LSA types, this is not needed yet */
+      /* Check whether optional LSAs are supported by neighbor */
+      if (!lsa_is_acceptable(en->lsa_type, n, p))
+	continue;
 
       /* 13.3 (1d) - add LSA to the link state retransmission list */
       ospf_lsa_lsrt_up(en, n);