BIER in non-MPLS netowrks

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

diff --git a/src/vnet/buffer.h b/src/vnet/buffer.h
index fbefe7c..8cb5545 100644 (file)
--- a/src/vnet/buffer.h
+++ b/src/vnet/buffer.h
@@ -43,32 +43,36 @@
 #include <vlib/vlib.h>
 
 #define foreach_vnet_buffer_field \
-  _( 1, L4_CHECKSUM_COMPUTED)                          \
-  _( 2, L4_CHECKSUM_CORRECT)                           \
-  _( 3, VLAN_2_DEEP)                                   \
-  _( 4, VLAN_1_DEEP)                                   \
-  _( 8, SPAN_CLONE)                                    \
-  _( 6, HANDOFF_NEXT_VALID)                            \
-  _( 7, LOCALLY_ORIGINATED)                            \
-  _( 8, IS_IP4)                                                \
-  _( 9, IS_IP6)                                                \
-  _(10, OFFLOAD_IP_CKSUM)                              \
-  _(11, OFFLOAD_TCP_CKSUM)                             \
-  _(12, OFFLOAD_UDP_CKSUM)
+  _( 1, L4_CHECKSUM_COMPUTED, "l4-cksum-computed")     \
+  _( 2, L4_CHECKSUM_CORRECT, "l4-cksum-correct")       \
+  _( 3, VLAN_2_DEEP, "vlan-2-deep")                    \
+  _( 4, VLAN_1_DEEP, "vlan-1-deep")                    \
+  _( 8, SPAN_CLONE, "span-clone")                      \
+  _( 6, HANDOFF_NEXT_VALID, "handoff-next-valid")      \
+  _( 7, LOCALLY_ORIGINATED, "local")                   \
+  _( 8, IS_IP4, "ip4")                                 \
+  _( 9, IS_IP6, "ip6")                                 \
+  _(10, OFFLOAD_IP_CKSUM, "offload-ip-cksum")          \
+  _(11, OFFLOAD_TCP_CKSUM, "offload-tcp-cksum")                \
+  _(12, OFFLOAD_UDP_CKSUM, "offload-udp-cksum")                \
+  _(13, IS_NATED, "nated")                             \
+  _(14, L2_HDR_OFFSET_VALID, 0)                                \
+  _(15, L3_HDR_OFFSET_VALID, 0)                                \
+  _(16, L4_HDR_OFFSET_VALID, 0)
 
 #define VNET_BUFFER_FLAGS_VLAN_BITS \
   (VNET_BUFFER_F_VLAN_1_DEEP | VNET_BUFFER_F_VLAN_2_DEEP)
 
 enum
 {
-#define _(bit, name) VNET_BUFFER_F_##name  = (1 << LOG2_VLIB_BUFFER_FLAG_USER(bit)),
+#define _(bit, name, v) VNET_BUFFER_F_##name  = (1 << LOG2_VLIB_BUFFER_FLAG_USER(bit)),
   foreach_vnet_buffer_field
 #undef _
 };
 
 enum
 {
-#define _(bit, name) VNET_BUFFER_F_LOG2_##name  = LOG2_VLIB_BUFFER_FLAG_USER(bit),
+#define _(bit, name, v) VNET_BUFFER_F_LOG2_##name  = LOG2_VLIB_BUFFER_FLAG_USER(bit),
   foreach_vnet_buffer_field
 #undef _
 };
@@ -87,6 +91,7 @@ _(ipsec)                                      \
 _(map)                                         \
 _(map_t)                                       \
 _(ip_frag)                                     \
+_(mpls)                                                \
 _(tcp)
 
 /*
@@ -125,8 +130,14 @@ typedef struct
             protocol and ports. */
          u32 flow_hash;
 
-         /* next protocol */
-         u32 save_protocol;
+         union
+         {
+           /* next protocol */
+           u32 save_protocol;
+
+           /* Hint for transport protocols */
+           u32 fib_index;
+         };
 
          /* Rewrite length */
          u32 save_rewrite_length;
@@ -156,6 +167,15 @@ typedef struct
       u8 ttl;
       u8 exp;
       u8 first;
+      /*
+       * BIER - the nubmer of bytes in the header.
+       *  the len field inthe header is not authoritative. It's the
+       * value in the table that counts.
+       */
+      struct
+      {
+       u8 n_bytes;
+      } bier;
     } mpls;
 
     /* ip4-in-ip6 softwire termination, only valid there */
@@ -310,10 +330,28 @@ typedef struct
 {
   union
   {
+#if VLIB_BUFFER_TRACE_TRAJECTORY > 0
+    /* buffer trajectory tracing */
+    struct
+    {
+      u16 *trajectory_trace;
+    };
+#endif
+    u32 unused[12];
   };
 } vnet_buffer_opaque2_t;
 
+#define vnet_buffer2(b) ((vnet_buffer_opaque2_t *) (b)->opaque2)
+
+/*
+ * The opaque2 field of the vlib_buffer_t is intepreted as a
+ * vnet_buffer_opaque2_t. Hence it should be big enough to accommodate one.
+ */
+STATIC_ASSERT (sizeof (vnet_buffer_opaque2_t) <=
+              STRUCT_SIZE_OF (vlib_buffer_t, opaque2),
+              "VNET buffer opaque2 meta-data too large for vlib_buffer");
 
+format_function_t format_vnet_buffer;
 
 #endif /* included_vnet_buffer_h */