/**
* 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) \
_(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)
#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) \
/* 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 - ignored if "feature" node */
- u16 estimated_mtu; /* estimated MTU calculated during reassembly */
+ /* 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
};
} reass;
};
-
} ip;
/*
{
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;
/* interface output features */
struct
{
- u32 flags;
u32 sad_index;
+ u32 protect_index;
} ipsec;
/* MAP */
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
{
{
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
u64 pad[1];
u64 pg_replay_timestamp;
};
- u32 unused[10];
+ u32 unused[8];
};
} 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 - \
+ vnet_buffer (b)->l3_hdr_offset)
+
+
format_function_t format_vnet_buffer;
#endif /* included_vnet_buffer_h */