span: add tx functionality and support for multiple mirror ports

[vpp.git] / vnet / vnet / buffer.h

diff --git a/vnet/vnet/buffer.h b/vnet/vnet/buffer.h
index d3ad864..898c94e 100644 (file)
--- a/vnet/vnet/buffer.h
+++ b/vnet/vnet/buffer.h
@@ -67,6 +67,12 @@
 #define LOG2_BUFFER_HANDOFF_NEXT_VALID LOG2_VLIB_BUFFER_FLAG_USER(6)
 #define BUFFER_HANDOFF_NEXT_VALID (1 << LOG2_BUFFER_HANDOFF_NEXT_VALID)
 
+#define LOG2_VNET_BUFFER_LOCALLY_ORIGINATED LOG2_VLIB_BUFFER_FLAG_USER(7)
+#define VNET_BUFFER_LOCALLY_ORIGINATED (1 << LOG2_VNET_BUFFER_LOCALLY_ORIGINATED)
+
+#define LOG2_VNET_BUFFER_SPAN_CLONE LOG2_VLIB_BUFFER_FLAG_USER(8)
+#define VNET_BUFFER_SPAN_CLONE (1 << LOG2_VNET_BUFFER_SPAN_CLONE)
+
 #define foreach_buffer_opaque_union_subtype     \
 _(ethernet)                                     \
 _(ip)                                           \
@@ -140,6 +146,18 @@ typedef struct
       };
     } ip;
 
+    /*
+     * MPLS:
+     * data copied from the MPLS header that was popped from the packet
+     * during the look-up.
+     */
+    struct
+    {
+      u8 ttl;
+      u8 exp;
+      u8 first;
+    } mpls;
+
     /* Multicast replication */
     struct
     {
@@ -328,6 +346,14 @@ typedef struct
   };
 } vnet_buffer_opaque_t;
 
+/*
+ * The opaque field of the vlib_buffer_t is intepreted as a
+ * vnet_buffer_opaque_t. Hence it should be big enough to accommodate one.
+ */
+STATIC_ASSERT (sizeof (vnet_buffer_opaque_t) <= STRUCT_SIZE_OF (vlib_buffer_t,
+                                                               opaque),
+              "VNET buffer meta-data too large for vlib_buffer");
+
 #define vnet_buffer(b) ((vnet_buffer_opaque_t *) (b)->opaque)
 
 /* Full cache line (64 bytes) of additional space */