/**
* 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) \
+ _ (2, L4_CHECKSUM_CORRECT, "l4-cksum-correct", 1) \
+ _ (3, VLAN_2_DEEP, "vlan-2-deep", 1) \
+ _ (4, VLAN_1_DEEP, "vlan-1-deep", 1) \
+ _ (5, SPAN_CLONE, "span-clone", 1) \
+ _ (6, LOOP_COUNTER_VALID, "loop-counter-valid", 0) \
+ _ (7, LOCALLY_ORIGINATED, "local", 1) \
+ _ (8, IS_IP4, "ip4", 1) \
+ _ (9, IS_IP6, "ip6", 1) \
+ _ (10, OFFLOAD, "offload", 0) \
+ _ (11, IS_NATED, "natted", 1) \
+ _ (12, L2_HDR_OFFSET_VALID, "l2_hdr_offset_valid", 0) \
+ _ (13, L3_HDR_OFFSET_VALID, "l3_hdr_offset_valid", 0) \
+ _ (14, L4_HDR_OFFSET_VALID, "l4_hdr_offset_valid", 0) \
+ _ (15, FLOW_REPORT, "flow-report", 1) \
+ _ (16, IS_DVR, "dvr", 1) \
+ _ (17, QOS_DATA_VALID, "qos-data-valid", 0) \
+ _ (18, GSO, "gso", 0) \
+ _ (19, AVAIL1, "avail1", 1) \
+ _ (20, AVAIL2, "avail2", 1) \
+ _ (21, AVAIL3, "avail3", 1) \
+ _ (22, AVAIL4, "avail4", 1) \
+ _ (23, AVAIL5, "avail5", 1) \
+ _ (24, AVAIL6, "avail6", 1) \
+ _ (25, AVAIL7, "avail7", 1) \
+ _ (26, AVAIL8, "avail8", 1) \
+ _ (27, AVAIL9, "avail9", 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 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, LOOP_COUNTER_VALID, 0) \
- _( 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_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 | VNET_BUFFER_F_AVAIL8 | VNET_BUFFER_F_AVAIL9)
#define VNET_BUFFER_FLAGS_VLAN_BITS \
(VNET_BUFFER_F_VLAN_1_DEEP | VNET_BUFFER_F_VLAN_2_DEEP)
enum
{
-#define _(bit, name, v) VNET_BUFFER_F_##name = (1 << LOG2_VLIB_BUFFER_FLAG_USER(bit)),
+#define _(bit, name, s, v) VNET_BUFFER_F_##name = (1 << LOG2_VLIB_BUFFER_FLAG_USER(bit)),
foreach_vnet_buffer_flag
#undef _
};
enum
{
-#define _(bit, name, v) VNET_BUFFER_F_LOG2_##name = LOG2_VLIB_BUFFER_FLAG_USER(bit),
+#define _(bit, name, s, v) VNET_BUFFER_F_LOG2_##name = LOG2_VLIB_BUFFER_FLAG_USER(bit),
foreach_vnet_buffer_flag
#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_vnet_buffer_offload_flag \
+ _ (0, IP_CKSUM, "offload-ip-cksum", 1) \
+ _ (1, TCP_CKSUM, "offload-tcp-cksum", 1) \
+ _ (2, UDP_CKSUM, "offload-udp-cksum", 1) \
+ _ (3, OUTER_IP_CKSUM, "offload-outer-ip-cksum", 1) \
+ _ (4, OUTER_UDP_CKSUM, "offload-outer-udp-cksum", 1) \
+ _ (5, TNL_VXLAN, "offload-vxlan-tunnel", 1) \
+ _ (6, TNL_IPIP, "offload-ipip-tunnel", 1)
+
+typedef enum
+{
+#define _(bit, name, s, v) VNET_BUFFER_OFFLOAD_F_##name = (1 << bit),
+ foreach_vnet_buffer_offload_flag
+#undef _
+} vnet_buffer_oflags_t;
+
+#define VNET_BUFFER_OFFLOAD_F_TNL_MASK \
+ (VNET_BUFFER_OFFLOAD_F_TNL_VXLAN | VNET_BUFFER_OFFLOAD_F_TNL_IPIP)
+
#define foreach_buffer_opaque_union_subtype \
_(ip) \
_(l2) \
i16 l3_hdr_offset;
i16 l4_hdr_offset;
u8 feature_arc_index;
- u8 dont_waste_me;
+ /* offload flags */
+ vnet_buffer_oflags_t oflags : 8;
union
{
};
/* Rewrite length */
- u32 save_rewrite_length;
+ u8 save_rewrite_length;
- /* MFIB RPF ID */
- u32 rpf_id;
+ union
+ {
+ /* sw_if_index of the local interface the buffer was received on
+ * - if hitting a DPO_RECEIVE - it is set in ip[46]-receive.
+ * This is ~0 if the dpo is not a receive dpo, or if the
+ * interface is not specified (e.g. route add via local) */
+ u32 rx_sw_if_index;
+
+ /* MFIB RPF ID */
+ u32 rpf_id;
+ };
};
/* ICMP */
/* reassembly */
union
{
- /* in/out variables */
+ /* group input/output to simplify the code, this way
+ * we can handoff while keeping input variables intact */
+ struct
+ {
+ /* 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
{
- u32 next_index; /* index of next node - ignored if "feature" node */
- u16 estimated_mtu; /* estimated MTU calculated during reassembly */
+ union
+ {
+ /* shallow virtual reassembly output variables */
+ struct
+ {
+ u16 l4_src_port; /* tcp/udp/icmp src port */
+ u16 l4_dst_port; /* tcp/udp/icmp dst port */
+ u32 tcp_ack_number;
+ u8 save_rewrite_length;
+ u8 ip_proto; /* protocol in ip header */
+ u8 icmp_type_or_tcp_flags;
+ u8 is_non_first_fragment;
+ u32 tcp_seq_number;
+ };
+ /* full reassembly output variables */
+ struct
+ {
+ u16 estimated_mtu; /* estimated MTU calculated during reassembly */
+ };
+ };
};
/* internal variables used during reassembly */
struct
};
} reass;
};
-
} ip;
/*
u8 ttl;
u8 exp;
u8 first;
+ u8 pyld_proto:3; /* dpo_proto_t */
+ u8 rsvd:5;
/* Rewrite length */
- u32 save_rewrite_length;
+ u8 save_rewrite_length;
+ /* Save the mpls header length including all label stack */
+ u8 mpls_hdr_length;
/*
- * BIER - the nubmer of bytes in the header.
- * the len field inthe header is not authoritative. It's the
+ * BIER - the number of bytes in the header.
+ * the len field in the header is not authoritative. It's the
* value in the table that counts.
*/
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;
/* interface output features */
struct
{
- u32 flags;
+ /* don't overlap the adjcencies nor flow-hash */
+ u32 __pad[3];
u32 sad_index;
+ u32 protect_index;
+ u16 thread_index;
} ipsec;
/* MAP */
struct
{
u32 pad[2]; /* do not overlay w/ ip.adj_index[0,1] */
- u16 header_offset;
u16 mtu;
u8 next_index;
u8 flags; //See ip_frag.h
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
{
u32 flags;
+ u32 required_thread_index;
} snat;
u32 unused[6];
};
} vnet_buffer_opaque_t;
+#define VNET_REWRITE_TOTAL_BYTES (VLIB_BUFFER_PRE_DATA_SIZE)
+
+STATIC_ASSERT (STRUCT_SIZE_OF (vnet_buffer_opaque_t, ip.save_rewrite_length)
+ == STRUCT_SIZE_OF (vnet_buffer_opaque_t,
+ ip.reass.save_rewrite_length)
+ && STRUCT_SIZE_OF (vnet_buffer_opaque_t,
+ ip.reass.save_rewrite_length) ==
+ STRUCT_SIZE_OF (vnet_buffer_opaque_t, mpls.save_rewrite_length)
+ && STRUCT_SIZE_OF (vnet_buffer_opaque_t,
+ mpls.save_rewrite_length) == 1
+ && VNET_REWRITE_TOTAL_BYTES < UINT8_MAX,
+ "save_rewrite_length member must be able to hold the max value of rewrite length");
+
+STATIC_ASSERT (STRUCT_OFFSET_OF (vnet_buffer_opaque_t, ip.save_rewrite_length)
+ == STRUCT_OFFSET_OF (vnet_buffer_opaque_t,
+ ip.reass.save_rewrite_length)
+ && STRUCT_OFFSET_OF (vnet_buffer_opaque_t,
+ mpls.save_rewrite_length) ==
+ STRUCT_OFFSET_OF (vnet_buffer_opaque_t,
+ ip.reass.save_rewrite_length),
+ "save_rewrite_length must be aligned so that reass doesn't overwrite it");
+
/*
- * The opaque field of the vlib_buffer_t is intepreted as a
+ * The opaque field of the vlib_buffer_t is interpreted as a
* vnet_buffer_opaque_t. Hence it should be big enough to accommodate one.
*/
STATIC_ASSERT (sizeof (vnet_buffer_opaque_t) <=
/* Group Based Policy */
struct
{
- u32 src_epg;
+ u8 __unused;
+ u8 flags;
+ u16 sclass;
} gbp;
- union
+ /**
+ * 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.
+ */
+ struct
{
- struct
+ u16 gso_size;
+ /* size of L4 prototol header */
+ u16 gso_l4_hdr_sz;
+ i16 outer_l3_hdr_offset;
+ i16 outer_l4_hdr_offset;
+ };
+
+ struct
+ {
+ u32 arc_next;
+ union
{
-#if VLIB_BUFFER_TRACE_TRAJECTORY > 0
- /* buffer trajectory tracing */
- u16 *trajectory_trace;
-#endif
+ u32 cached_session_index;
+ u32 cached_dst_nat_session_index;
};
+ } nat;
+
+ union
+ {
struct
{
u64 pad[1];
u64 pg_replay_timestamp;
};
- u32 unused[10];
+ u32 unused[8];
};
} 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
+ * The opaque2 field of the vlib_buffer_t is interpreted 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");
+#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_no_chain;
format_function_t format_vnet_buffer;
+format_function_t format_vnet_buffer_offload;
+format_function_t format_vnet_buffer_flags;
+format_function_t format_vnet_buffer_opaque;
+format_function_t format_vnet_buffer_opaque2;
+
+static_always_inline void
+vnet_buffer_offload_flags_set (vlib_buffer_t *b, vnet_buffer_oflags_t oflags)
+{
+ if (b->flags & VNET_BUFFER_F_OFFLOAD)
+ {
+ /* add a flag to existing offload */
+ vnet_buffer (b)->oflags |= oflags;
+ }
+ else
+ {
+ /* no offload yet: reset offload flags to new value */
+ vnet_buffer (b)->oflags = oflags;
+ b->flags |= VNET_BUFFER_F_OFFLOAD;
+ }
+}
+
+static_always_inline void
+vnet_buffer_offload_flags_clear (vlib_buffer_t *b, vnet_buffer_oflags_t oflags)
+{
+ vnet_buffer (b)->oflags &= ~oflags;
+ if (0 == vnet_buffer (b)->oflags)
+ b->flags &= ~VNET_BUFFER_F_OFFLOAD;
+}
#endif /* included_vnet_buffer_h */
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