lisp: fix crash with arp and packet trace on

With packet trace on, VPP crashes when an arp packet arrives. This patch
fixes the crash and also ensures that the packet trace displays the eid
info.

Type: fix
Signed-off-by: Onong Tayeng <otayeng@cisco.com>
Change-Id: Iaad09a5e2b33e931ab9bd7bc3d4573b5ed5e4bfd

Author: onong

src/vnet/lisp-cp/control.c

@@ -3552,7 +3552,11 @@ lisp_cp_lookup_inline (vlib_main_t * vm,
 							   sizeof (*tr));
 
 	      clib_memset (tr, 0, sizeof (*tr));
-	      gid_address_copy (&tr->dst_eid, &dst);
+	      if ((gid_address_type (&dst) == GID_ADDR_NDP) ||
+		  (gid_address_type (&dst) == GID_ADDR_ARP))
+		clib_memcpy (&tr->dst_eid, &dst, sizeof (gid_address_t));
+	      else
+		gid_address_copy (&tr->dst_eid, &dst);
 	      ip_address_copy (&tr->map_resolver_ip,
 			       &lcm->active_map_resolver);
 	    }

src/vnet/lisp-cp/lisp_types.c

@@ -41,7 +41,7 @@ serdes_fct write_fcts[GID_ADDR_TYPES] =
 };
 
 cast_fct cast_fcts[GID_ADDR_TYPES] =
-  { ip_prefix_cast, lcaf_cast, mac_cast, sd_cast, nsh_cast, 0 /* arp */ ,
+  { ip_prefix_cast, lcaf_cast, mac_cast, sd_cast, nsh_cast, no_addr_cast,
   no_addr_cast
 };
 
@@ -51,7 +51,7 @@ addr_len_fct addr_len_fcts[GID_ADDR_TYPES] =
 };
 
 copy_fct copy_fcts[GID_ADDR_TYPES] =
-  { ip_prefix_copy, lcaf_copy, mac_copy, sd_copy, nsh_copy, 0 /* arp */ ,
+  { ip_prefix_copy, lcaf_copy, mac_copy, sd_copy, nsh_copy, no_addr_copy,
   no_addr_copy
 };