#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) \
- _( 6, HANDOFF_NEXT_VALID) \
- _( 7, LOCALLY_ORIGINATED) \
- _( 8, SPAN_CLONE)
+/**
+ * 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") \
+ _( 2, L4_CHECKSUM_CORRECT, "l4-cksum-correct") \
+ _( 3, VLAN_2_DEEP, "vlan-2-deep") \
+ _( 4, VLAN_1_DEEP, "vlan-1-deep") \
+ _( 5, 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) \
+ _(17, FLOW_REPORT, "flow-report") \
+ _(18, IS_DVR, "dvr") \
+ _(19, QOS_DATA_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)),
- foreach_vnet_buffer_field
+#define _(bit, name, v) VNET_BUFFER_F_##name = (1 << LOG2_VLIB_BUFFER_FLAG_USER(bit)),
+ foreach_vnet_buffer_flag
#undef _
};
enum
{
-#define _(bit, name) VNET_BUFFER_F_LOG2_##name = LOG2_VLIB_BUFFER_FLAG_USER(bit),
- foreach_vnet_buffer_field
+#define _(bit, name, v) VNET_BUFFER_F_LOG2_##name = LOG2_VLIB_BUFFER_FLAG_USER(bit),
+ foreach_vnet_buffer_flag
#undef _
};
-
#define foreach_buffer_opaque_union_subtype \
_(ip) \
_(swt) \
_(map) \
_(map_t) \
_(ip_frag) \
+_(mpls) \
_(tcp)
/*
i16 l2_hdr_offset;
i16 l3_hdr_offset;
i16 l4_hdr_offset;
+ u16 dont_waste_me;
union
{
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;
u8 code;
u32 data;
} icmp;
+
+ /* reassembly */
+ union
+ {
+ /* in/out variables */
+ struct
+ {
+ u32 next_index; /* index of next node - ignored if "feature" node */
+ u16 estimated_mtu; /* estimated MTU calculated during reassembly */
+ };
+ /* internal variables used during reassembly */
+ struct
+ {
+ u16 fragment_first;
+ u16 fragment_last;
+ u16 range_first;
+ u16 range_last;
+ u32 next_range_bi;
+ u16 ip6_frag_hdr_offset;
+ };
+ } reass;
};
} ip;
*/
struct
{
+ /* do not overlay w/ ip.adj_index[0,1] nor flow hash */
+ u32 pad[VLIB_N_RX_TX + 1];
u8 ttl;
u8 exp;
u8 first;
+ /* Rewrite length */
+ u32 save_rewrite_length;
+ /*
+ * 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 */
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;
/* l2tpv3 softwire encap, only valid there */
/* IP Fragmentation */
struct
{
+ u32 pad[2]; /* do not overlay w/ ip.adj_index[0,1] */
u16 header_offset;
u16 mtu;
u8 next_index;
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
+ {
+ u32 flags;
+ } snat;
+
u32 unused[6];
};
} vnet_buffer_opaque_t;
/* Full cache line (64 bytes) of additional space */
typedef struct
{
+ /**
+ * QoS marking data that needs to persist from the recording nodes
+ * (nominally in the ingress path) to the marking node (in the
+ * egress path)
+ */
+ struct
+ {
+ u8 bits;
+ u8 source;
+ } qos;
+
+ u8 __unused[2];
+
union
{
+ struct
+ {
+#if VLIB_BUFFER_TRACE_TRAJECTORY > 0
+ /* buffer trajectory tracing */
+ u16 *trajectory_trace;
+#endif
+ };
+ u32 unused[11];
};
} 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 */
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