Support IETF routing Yang models (VPP-503).

[vpp.git] / vnet / vnet / fib / fib_entry_src_mpls.c

diff --git a/vnet/vnet/fib/fib_entry_src_mpls.c b/vnet/vnet/fib/fib_entry_src_mpls.c
index 4f4a023..4c316f7 100644 (file)
--- a/vnet/vnet/fib/fib_entry_src_mpls.c
+++ b/vnet/vnet/fib/fib_entry_src_mpls.c
@@ -104,7 +104,7 @@ fib_entry_src_mpls_set_data (fib_entry_src_t *src,
            .fp_label = label,
        };
        fib_node_index_t fib_index;
-       dpo_id_t dpo = DPO_NULL;
+       dpo_id_t dpo = DPO_INVALID;
 
         /*
          * adding a new local label. make sure the MPLS fib exists.
@@ -118,6 +118,19 @@ fib_entry_src_mpls_set_data (fib_entry_src_t *src,
        else
        {
            fib_index = mpls_fib_index_from_table_id(MPLS_FIB_DEFAULT_TABLE_ID);
+
+           /*
+            * if this is a change in label, reomve the old one first
+            */
+           if (src->mpls.fesm_label != label)
+           {
+               FOR_EACH_MPLS_EOS_BIT(eos)
+               {
+                   ASSERT(FIB_NODE_INDEX_INVALID != src->mpls.fesm_lfes[eos]);
+                   fib_table_entry_delete_index(src->mpls.fesm_lfes[eos],
+                                                FIB_SOURCE_SPECIAL);
+               }
+           }
        }
 
         src->mpls.fesm_label = label;