Mcast rewrite optimisations

[vpp.git] / src / vnet / ip / ip6_neighbor.c

diff --git a/src/vnet/ip/ip6_neighbor.c b/src/vnet/ip/ip6_neighbor.c
index a1439fa..8e44402 100644 (file)
--- a/src/vnet/ip/ip6_neighbor.c
+++ b/src/vnet/ip/ip6_neighbor.c
@@ -672,10 +672,10 @@ ip6_ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
         * Complete the remaining fields of the adj's rewrite to direct the
         * complete of the rewrite at switch time by copying in the IP
         * dst address's bytes.
-        * Ofset is 2 bytes into the desintation address. And we write 4 bytes.
+        * Ofset is 2 bytes into the desintation address.
         */
        offset = vec_len (rewrite) - 2;
-       adj_mcast_update_rewrite (ai, rewrite, offset, 0xffffffff);
+       adj_mcast_update_rewrite (ai, rewrite, offset);
 
        break;
       }
@@ -2575,6 +2575,10 @@ ip6_neighbor_sw_interface_add_del (vnet_main_t * vnm,
     {
       if (is_add)
        {
+         vnet_hw_interface_t *hw_if0;
+
+         hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index);
+
          pool_get (nm->if_radv_pool, a);
 
          ri = a - nm->if_radv_pool;
@@ -2608,8 +2612,7 @@ ip6_neighbor_sw_interface_add_del (vnet_main_t * vnm,
          a->send_radv = 1;
 
          /* fill in radv_info for this interface that will be needed later */
-         a->adv_link_mtu =
-           vnet_sw_interface_get_mtu (vnm, sw_if_index, VLIB_TX);
+         a->adv_link_mtu = hw_if0->max_l3_packet_bytes[VLIB_RX];
 
          clib_memcpy (a->link_layer_address, eth_if0->address, 6);