l2_output: reset bit after mapping is created

[vpp.git] / vnet / vnet / l2 / l2_output.c

diff --git a/vnet/vnet/l2/l2_output.c b/vnet/vnet/l2/l2_output.c
index 85678ca..f03796e 100644 (file)
--- a/vnet/vnet/l2/l2_output.c
+++ b/vnet/vnet/l2/l2_output.c
@@ -634,6 +634,9 @@ l2output_create_output_node_mapping (vlib_main_t * vlib_main, vnet_main_t * vnet
   node = vec_elt_at_index (output_node_index_vec, sw_if_index);
   *node = next;
 
+  /* reset mapping bit, includes memory barrier */
+  __sync_fetch_and_and (&hw0->flags, ~VNET_HW_INTERFACE_FLAG_L2OUTPUT_MAPPED);
+
   return next;
 }