GBP: return appropriate error code if tranport mode subnet has no interface

Change-Id: Ic230b332a01c36454c11d0b6515ec256bd0fd5c6
Signed-off-by: Neale Ranns <nranns@cisco.com>

diff --git a/src/plugins/gbp/gbp_subnet.c b/src/plugins/gbp/gbp_subnet.c
index b0b6db8..0c8d3ae 100644 (file)
--- a/src/plugins/gbp/gbp_subnet.c
+++ b/src/plugins/gbp/gbp_subnet.c
@@ -117,6 +117,9 @@ gbp_subnet_transport_add (gbp_subnet_t * gs)
   fproto = gs->gs_key->gsk_pfx.fp_proto;
   grd = gbp_route_domain_get (gs->gs_rd);
 
+  if (~0 == grd->grd_uu_sw_if_index[fproto])
+    return (VNET_API_ERROR_INVALID_SW_IF_INDEX);
+
   gs->gs_fei = fib_table_entry_update_one_path (gs->gs_key->gsk_fib_index,
                                                &gs->gs_key->gsk_pfx,
                                                FIB_SOURCE_PLUGIN_HI,