Modify return values of L2 bridge API handlers

Change-Id: Ie6a6dde1fdc0e4fa8560682072a69876867a88d3
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
diff --git a/src/vnet/l2/l2_api.c b/src/vnet/l2/l2_api.c
index 3f27feb..eb04459 100644
--- a/src/vnet/l2/l2_api.c
+++ b/src/vnet/l2/l2_api.c
@@ -688,6 +688,16 @@
 			    L2_BD_PORT_TYPE_NORMAL, 0, 0);
     }
 
+  switch (rv)
+    {
+    case MODE_ERROR_ETH:
+      rv = VNET_API_ERROR_NON_ETHERNET;
+      break;
+    case MODE_ERROR_BVI_DEF:
+      rv = VNET_API_ERROR_BD_ALREADY_HAS_BVI;
+      break;
+    }
+
   BAD_RX_SW_IF_INDEX_LABEL;
   BAD_TX_SW_IF_INDEX_LABEL;
 
@@ -746,6 +756,16 @@
       rv = set_int_l2_mode (vm, vnm, MODE_L3, rx_sw_if_index, 0, pt, 0, 0);
     }
 
+  switch (rv)
+    {
+    case MODE_ERROR_ETH:
+      rv = VNET_API_ERROR_NON_ETHERNET;
+      break;
+    case MODE_ERROR_BVI_DEF:
+      rv = VNET_API_ERROR_BD_ALREADY_HAS_BVI;
+      break;
+    }
+
   BAD_RX_SW_IF_INDEX_LABEL;
   BAD_BD_ID_LABEL;
 out: