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Diffstat (limited to 'src/vnet/l2/l2_output.h')
-rw-r--r--src/vnet/l2/l2_output.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/src/vnet/l2/l2_output.h b/src/vnet/l2/l2_output.h
index c683b1ade73..9597205caed 100644
--- a/src/vnet/l2/l2_output.h
+++ b/src/vnet/l2/l2_output.h
@@ -94,6 +94,7 @@ l2output_main_t l2output_main;
/* Mappings from feature ID to graph node name */
#define foreach_l2output_feat \
+ _(OUTPUT, "interface-output") \
_(SPAN, "feature-bitmap-drop") \
_(CFM, "feature-bitmap-drop") \
_(QOS, "feature-bitmap-drop") \
@@ -217,9 +218,21 @@ l2_output_dispatch (vlib_main_t * vlib_main,
vlib_buffer_t * b0,
u32 sw_if_index, u32 feature_bitmap, u32 * next0)
{
- if (feature_bitmap)
+ /*
+ * The output feature bitmap always have at least the output feature bit set
+ * for a normal L2 interface (or all 0's if the interface is changed from L2
+ * to L3 mode). So if next_nodes specified is that from the l2-output node and
+ * the bitmap is all clear except output feature bit, we know there is no more
+ * feature and will fall through to output packet. If next_nodes is from a L2
+ * output feature node (and not l2-output), we always want to get the node for
+ * the next L2 output feature, including the last feature being interface-
+ * output node to output packet.
+ */
+ if ((next_nodes != &l2output_main.next_nodes)
+ || ((feature_bitmap & ~L2OUTPUT_FEAT_OUTPUT) != 0))
{
/* There are some features to execute */
+ ASSERT (feature_bitmap != 0);
/* Save bitmap for the next feature graph nodes */
vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;