sctp: move to plugins, disabled by default

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

diff --git a/src/vnet/buffer.h b/src/vnet/buffer.h
index d701e21..97dd31c 100644 (file)
--- a/src/vnet/buffer.h
+++ b/src/vnet/buffer.h
@@ -44,6 +44,7 @@
 
 /**
  * Flags that are set in the high order bits of ((vlib_buffer*)b)->flags
+ *
  */
 #define foreach_vnet_buffer_flag                        \
   _( 1, L4_CHECKSUM_COMPUTED, "l4-cksum-computed", 1)  \
@@ -64,7 +65,26 @@
   _(16, L4_HDR_OFFSET_VALID, "l4_hdr_offset_valid", 0)  \
   _(17, FLOW_REPORT, "flow-report", 1)                  \
   _(18, IS_DVR, "dvr", 1)                               \
-  _(19, QOS_DATA_VALID, "qos-data-valid", 0)
+  _(19, QOS_DATA_VALID, "qos-data-valid", 0)            \
+  _(20, GSO, "gso", 0)                                  \
+  _(21, AVAIL1, "avail1", 1)                            \
+  _(22, AVAIL2, "avail2", 1)                            \
+  _(23, AVAIL3, "avail3", 1)                            \
+  _(24, AVAIL4, "avail4", 1)                            \
+  _(25, AVAIL5, "avail5", 1)                            \
+  _(26, AVAIL6, "avail6", 1)                            \
+  _(27, AVAIL7, "avail7", 1)
+
+/*
+ * Please allocate the FIRST available bit, redefine
+ * AVAIL 1 ... AVAILn-1, and remove AVAILn. Please maintain the
+ * VNET_BUFFER_FLAGS_ALL_AVAIL definition.
+ */
+
+#define VNET_BUFFER_FLAGS_ALL_AVAIL                                     \
+  (VNET_BUFFER_F_AVAIL1 | VNET_BUFFER_F_AVAIL2 | VNET_BUFFER_F_AVAIL3 | \
+   VNET_BUFFER_F_AVAIL4 | VNET_BUFFER_F_AVAIL5 | VNET_BUFFER_F_AVAIL6 | \
+   VNET_BUFFER_F_AVAIL7)
 
 #define VNET_BUFFER_FLAGS_VLAN_BITS \
   (VNET_BUFFER_F_VLAN_1_DEEP | VNET_BUFFER_F_VLAN_2_DEEP)
@@ -83,6 +103,10 @@ enum
 #undef _
 };
 
+/* Make sure that the vnet and vlib bits are disjoint */
+STATIC_ASSERT (((VNET_BUFFER_FLAGS_ALL_AVAIL & VLIB_BUFFER_FLAGS_ALL) == 0),
+              "VLIB / VNET buffer flags overlap");
+
 #define foreach_buffer_opaque_union_subtype     \
 _(ip)                                           \
 _(l2)                                           \
@@ -164,8 +188,10 @@ typedef struct
          /* in/out variables */
          struct
          {
-           u32 next_index;     /* index of next node - ignored if "feature" node */
+           u32 next_index;     /* index of next node - used by custom apps */
+           u32 error_next_index;       /* index of next node if error - used by custom apps */
            u16 estimated_mtu;  /* estimated MTU calculated during reassembly */
+           u16 owner_thread_index;
          };
          /* internal variables used during reassembly */
          struct
@@ -176,6 +202,7 @@ typedef struct
            u16 range_last;
            u32 next_range_bi;
            u16 ip6_frag_hdr_offset;
+           u16 owner_feature_thread_index;
          };
        } reass;
       };
@@ -212,9 +239,9 @@ typedef struct
     {
       u32 feature_bitmap;
       u16 bd_index;            /* bridge-domain index */
+      u16 l2fib_sn;            /* l2fib bd/int seq_num */
       u8 l2_len;               /* ethernet header length */
       u8 shg;                  /* split-horizon group */
-      u16 l2fib_sn;            /* l2fib bd/int seq_num */
       u8 bd_age;               /* aging enabled */
     } l2;
 
@@ -248,8 +275,8 @@ typedef struct
     /* interface output features */
     struct
     {
-      u32 flags;
       u32 sad_index;
+      u32 protect_index;
     } ipsec;
 
     /* MAP */
@@ -300,7 +327,11 @@ typedef struct
     struct
     {
       u32 connection_index;
-      u32 seq_number;
+      union
+      {
+       u32 seq_number;
+       u32 next_node_opaque;
+      };
       u32 seq_end;
       u32 ack_number;
       u16 hdr_offset;          /**< offset relative to ip hdr */
@@ -309,20 +340,6 @@ typedef struct
       u8 flags;
     } tcp;
 
-    /* SCTP */
-    struct
-    {
-      u32 connection_index;
-      u16 sid; /**< Stream ID */
-      u16 ssn; /**< Stream Sequence Number */
-      u32 tsn; /**< Transmission Sequence Number */
-      u16 hdr_offset;          /**< offset relative to ip hdr */
-      u16 data_offset;         /**< offset relative to ip hdr */
-      u16 data_len;            /**< data len */
-      u8 subconn_idx; /**< index of the sub_connection being used */
-      u8 flags;
-    } sctp;
-
     /* SNAT */
     struct
     {
@@ -365,9 +382,23 @@ typedef struct
   {
     u8 __unused;
     u8 flags;
-    u16 src_epg;
+    u16 sclass;
   } gbp;
 
+  /**
+   * The L4 payload size set on input on GSO enabled interfaces
+   * when we receive a GSO packet (a chain of buffers with the first one
+   * having GSO bit set), and needs to persist all the way to the interface-output,
+   * in case the egress interface is not GSO-enabled - then we need to perform
+   * the segmentation, and use this value to cut the payload appropriately.
+   */
+  u16 gso_size;
+  /* size of L4 prototol header */
+  u16 gso_l4_hdr_sz;
+
+  /* The union below has a u64 alignment, so this space is unused */
+  u32 __unused2[1];
+
   union
   {
     struct
@@ -382,7 +413,7 @@ typedef struct
       u64 pad[1];
       u64 pg_replay_timestamp;
     };
-    u32 unused[10];
+    u32 unused[8];
   };
 } vnet_buffer_opaque2_t;
 
@@ -396,6 +427,9 @@ STATIC_ASSERT (sizeof (vnet_buffer_opaque2_t) <=
               STRUCT_SIZE_OF (vlib_buffer_t, opaque2),
               "VNET buffer opaque2 meta-data too large for vlib_buffer");
 
+#define gso_mtu_sz(b) (vnet_buffer2(b)->gso_size + vnet_buffer2(b)->gso_l4_hdr_sz + vnet_buffer(b)->l4_hdr_offset)
+
+
 format_function_t format_vnet_buffer;
 
 #endif /* included_vnet_buffer_h */