commit d5b6aa139856a1447f7bc5377058202110eaa4cf
author Neale Ranns <nranns@cisco.com> Tue May 16 08:46:45 2017 -0700
committer Damjan Marion <dmarion.lists@gmail.com> Wed May 17 00:16:24 2017 +0000
tree b192c8176824c075c2192d14ec5cd65ccd2ef4f8
parent 259cdaeccb70ea1a45b422218d3f5e1920459db8

ARP learning fixes (VPP-843)

learn ARP peers if, 1) it's a reply to a local address, 2) we are sending a response to a request.
send proxy ARP responses only in the interface the request was sent.

Change-Id: I22b949c65122824233076492b7dd537daca07bc2
Signed-off-by: Neale Ranns <nranns@cisco.com>

src/vnet/ip/ip6_neighbor.c

diff --git a/src/vnet/ip/ip6_neighbor.c b/src/vnet/ip/ip6_neighbor.c
index ee80ee3..4fd078d 100644
--- a/src/vnet/ip/ip6_neighbor.c
+++ b/src/vnet/ip/ip6_neighbor.c
@@ -273,7 +273,8 @@
 	{
 	  n = pool_elt_at_index (nm->neighbor_pool, to_delete[i]);
 	  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
-	  fib_table_entry_delete_index (n->fib_entry_index, FIB_SOURCE_ADJ);
+	  if (FIB_NODE_INDEX_INVALID != n->fib_entry_index)
+	    fib_table_entry_delete_index (n->fib_entry_index, FIB_SOURCE_ADJ);
 	  pool_put (nm->neighbor_pool, n);
 	}
 
@@ -610,6 +611,7 @@
       mhash_set (&nm->neighbor_index_by_key, &k, n - nm->neighbor_pool,
 		 /* old value */ 0);
       n->key = k;
+      n->fib_entry_index = FIB_NODE_INDEX_INVALID;
 
       clib_memcpy (n->link_layer_address,
 		   link_layer_address, n_bytes_link_layer_address);
@@ -750,7 +752,9 @@
   adj_nbr_walk_nh6 (sw_if_index,
 		    &n->key.ip6_address, ip6_nd_mk_incomplete_walk, NULL);
 
-  fib_table_entry_delete_index (n->fib_entry_index, FIB_SOURCE_ADJ);
+
+  if (FIB_NODE_INDEX_INVALID != n->fib_entry_index)
+    fib_table_entry_delete_index (n->fib_entry_index, FIB_SOURCE_ADJ);
   pool_put (nm->neighbor_pool, n);
 
 out: