/* reassembly */
union
{
- /* in/out variables */
+ /* group input/handoff as handoff is done before input is consumed,
+ * this way we can handoff while keeping input variables intact */
struct
{
- 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;
+ /* input variables */
+ struct
+ {
+ 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 */
+ };
+ /* handoff variables */
+ struct
+ {
+ u16 owner_thread_index;
+ };
+ };
+ /* output variables */
+ struct
+ {
+ union
+ {
+ /* shallow virtual reassembly output variables */
+ struct
+ {
+ u8 ip_proto; /* protocol in ip header */
+ u16 l4_src_port; /* tcp/udp/icmp src port */
+ u16 l4_dst_port; /* tcp/udp/icmp dst port */
+ };
+ /* full reassembly output variables */
+ struct
+ {
+ u16 estimated_mtu; /* estimated MTU calculated during reassembly */
+ };
+ };
};
/* internal variables used during reassembly */
struct
u16 range_last;
u32 next_range_bi;
u16 ip6_frag_hdr_offset;
- u16 owner_feature_thread_index;
};
} reass;
};
-
} ip;
/*
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 */
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
{
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)
+#define gso_mtu_sz(b) (vnet_buffer2(b)->gso_size + \
+ vnet_buffer2(b)->gso_l4_hdr_sz + \
+ vnet_buffer(b)->l4_hdr_offset - \
+ vnet_buffer (b)->l3_hdr_offset)
format_function_t format_vnet_buffer;