#include <vlib/vlib.h>
-/* VLIB buffer flags for ip4/ip6 packets. Set by input interfaces for ip4/ip6
- tcp/udp packets with hardware computed checksums. */
-#define LOG2_IP_BUFFER_L4_CHECKSUM_COMPUTED LOG2_VLIB_BUFFER_FLAG_USER(1)
-#define LOG2_IP_BUFFER_L4_CHECKSUM_CORRECT LOG2_VLIB_BUFFER_FLAG_USER(2)
-#define IP_BUFFER_L4_CHECKSUM_COMPUTED (1 << LOG2_IP_BUFFER_L4_CHECKSUM_COMPUTED)
-#define IP_BUFFER_L4_CHECKSUM_CORRECT (1 << LOG2_IP_BUFFER_L4_CHECKSUM_CORRECT)
-
-/* VLAN header flags.
- * These bits are zeroed in vlib_buffer_init_for_free_list()
- * meaning wherever the buffer comes from they have a reasonable
- * value (eg, if ip4/ip6 generates the packet.)
- */
-#define LOG2_ETH_BUFFER_VLAN_2_DEEP LOG2_VLIB_BUFFER_FLAG_USER(3)
-#define LOG2_ETH_BUFFER_VLAN_1_DEEP LOG2_VLIB_BUFFER_FLAG_USER(4)
-#define ETH_BUFFER_VLAN_2_DEEP (1 << LOG2_ETH_BUFFER_VLAN_2_DEEP)
-#define ETH_BUFFER_VLAN_1_DEEP (1 << LOG2_ETH_BUFFER_VLAN_1_DEEP)
-#define ETH_BUFFER_VLAN_BITS (ETH_BUFFER_VLAN_1_DEEP | \
- ETH_BUFFER_VLAN_2_DEEP)
-
-#define LOG2_VNET_BUFFER_RTE_MBUF_VALID LOG2_VLIB_BUFFER_FLAG_USER(5)
-#define VNET_BUFFER_RTE_MBUF_VALID (1 << LOG2_VNET_BUFFER_RTE_MBUF_VALID)
-
-#define LOG2_BUFFER_HANDOFF_NEXT_VALID LOG2_VLIB_BUFFER_FLAG_USER(6)
-#define BUFFER_HANDOFF_NEXT_VALID (1 << LOG2_BUFFER_HANDOFF_NEXT_VALID)
+#define foreach_vnet_buffer_field \
+ _( 1, L4_CHECKSUM_COMPUTED) \
+ _( 2, L4_CHECKSUM_CORRECT) \
+ _( 3, VLAN_2_DEEP) \
+ _( 4, VLAN_1_DEEP) \
+ _( 8, SPAN_CLONE) \
+ _( 6, HANDOFF_NEXT_VALID) \
+ _( 7, LOCALLY_ORIGINATED) \
+ _( 8, IS_IP4) \
+ _( 9, IS_IP6) \
+ _(10, OFFLOAD_IP_CKSUM) \
+ _(11, OFFLOAD_TCP_CKSUM) \
+ _(12, OFFLOAD_UDP_CKSUM) \
+ _(13, IS_NATED)
+
+#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
+#undef _
+};
-#define LOG2_VNET_BUFFER_LOCALLY_ORIGINATED LOG2_VLIB_BUFFER_FLAG_USER(7)
-#define VNET_BUFFER_LOCALLY_ORIGINATED (1 << LOG2_VNET_BUFFER_LOCALLY_ORIGINATED)
+enum
+{
+#define _(bit, name) VNET_BUFFER_F_LOG2_##name = LOG2_VLIB_BUFFER_FLAG_USER(bit),
+ foreach_vnet_buffer_field
+#undef _
+};
-#define LOG2_VNET_BUFFER_SPAN_CLONE LOG2_VLIB_BUFFER_FLAG_USER(8)
-#define VNET_BUFFER_SPAN_CLONE (1 << LOG2_VNET_BUFFER_SPAN_CLONE)
#define foreach_buffer_opaque_union_subtype \
-_(ethernet) \
_(ip) \
-_(mcast) \
_(swt) \
_(l2) \
_(l2t) \
_(ipsec) \
_(map) \
_(map_t) \
-_(ip_frag)
+_(ip_frag) \
+_(tcp)
/*
* vnet stack buffer opaque array overlay structure.
typedef struct
{
u32 sw_if_index[VLIB_N_RX_TX];
+ i16 l2_hdr_offset;
+ i16 l3_hdr_offset;
+ i16 l4_hdr_offset;
union
{
- /* Ethernet. */
- struct
- {
- /* Saved value of current header by ethernet-input. */
- i32 start_of_ethernet_header;
- } ethernet;
-
/* IP4/6 buffer opaque. */
struct
{
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;
+
+ /* MFIB RPF ID */
+ u32 rpf_id;
};
/* ICMP */
u8 code;
u32 data;
} icmp;
-
- /* IP header offset from vlib_buffer.data - saved by ip*_local nodes */
- i32 start_of_ip_header;
};
} ip;
u8 first;
} mpls;
- /* Multicast replication */
- struct
- {
- u32 pad[3];
- u32 mcast_group_index;
- u32 mcast_current_index;
- u32 original_free_list_index;
- } mcast;
-
/* ip4-in-ip6 softwire termination, only valid there */
struct
{
} swt;
/* l2 bridging path, only valid there */
- struct
+ struct opaque_l2
{
u32 feature_bitmap;
- u16 bd_index; // bridge-domain index
- u8 l2_len; // ethernet header length
- u8 shg; // split-horizon group
+ u16 bd_index; /* bridge-domain index */
+ 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 */
/* L2 classify */
struct
{
- u64 pad;
- u32 table_index;
- u32 opaque_index;
+ struct opaque_l2 pad;
+ union
+ {
+ u32 table_index;
+ u32 opaque_index;
+ };
u64 hash;
} l2_classify;
u32 sad_index;
} ipsec;
- /* vcgn udp inside input, only valid there */
- struct
- {
- /* This part forms context of the packet. The structure should be
- * exactly same as spp_ctx_t. Also this should be the first
- * element of this vcgn_uii structure.
- */
- /****** BEGIN spp_ctx_t section ***********************/
- union
- { /* Roddick specific */
- u32 roddick_info;
- struct _tx_pkt_info
- { /* Used by PI to PI communication for TX */
- u32 uidb_index:16; /* uidb_index to transmit */
- u32 packet_type:2; /* 1-IPv4, 2-Ipv6, - 0,3 - Unused */
- u32 ipv4_defrag:1; /* 0 - Normal, 1 - update first
- * segment size
- * (set by 6rd defrag node)
- */
-
- u32 dst_ip_port_idx:4; /* Index to dst_ip_port_table */
- u32 from_node:4;
- u32 calc_chksum:1;
- u32 reserved:4;
- } tx;
- struct _rx_pkt_info
- { /* Used by PD / PI communication */
- u32 uidb_index:16; /* uidb_index received in packet */
- u32 packet_type:2; /* 1-IPv4, 2-Ipv6, - 0,3 - Unused */
- u32 icmp_type:1; /* 0-ICMP query type, 1-ICMP error type */
- u32 protocol_type:2; /* 1-TCP, 2-UDP, 3-ICMP, 0 - Unused */
- u32 ipv4_defrag:1; /* 0 - Normal, 1 - update first
- * segment size
- * (set by 6rd defrag node)
- */
-
- u32 direction:1; /* 0-Outside, 1-Inside */
- u32 frag:1; /*IP fragment-1, Otherwise-0 */
- u32 option:1; /* 0-No IP option (v4) present, non-fragHdr
- * option hdr present (v6)
- */
- u32 df_bit:1; /* IPv4 DF bit copied here */
- u32 reserved1:6;
- } rx;
- } ru;
- /****** END spp_ctx_t section ***********************/
-
- union
- {
- struct
- {
- u32 ipv4;
- u16 port;
- u16 vrf; //bit0-13:i/f, bit14-15:protocol
- } k;
-
- u64 key64;
- } key;
-
- u32 bucket;
-
- u16 ovrf; /* Exit interface */
- u8 frag_pkt;
- u8 vcgn_unused1;
- } vcgn_uii;
-
/* MAP */
struct
{
u16 buffer_advance;
} device_input_feat;
+ /* TCP */
+ struct
+ {
+ u32 connection_index;
+ u32 seq_number;
+ u32 seq_end;
+ u32 ack_number;
+ u16 hdr_offset; /**< offset relative to ip hdr */
+ u16 data_offset; /**< offset relative to ip hdr */
+ u16 data_len; /**< data len */
+ u8 flags;
+ } tcp;
+
+ /* SNAT */
+ struct
+ {
+ u32 flags;
+ } snat;
+
u32 unused[6];
};
} vnet_buffer_opaque_t;
* The opaque field of the vlib_buffer_t is intepreted as a
* vnet_buffer_opaque_t. Hence it should be big enough to accommodate one.
*/
-STATIC_ASSERT (sizeof (vnet_buffer_opaque_t) <= STRUCT_SIZE_OF (vlib_buffer_t,
- opaque),
+STATIC_ASSERT (sizeof (vnet_buffer_opaque_t) <=
+ STRUCT_SIZE_OF (vlib_buffer_t, opaque),
"VNET buffer meta-data too large for vlib_buffer");
#define vnet_buffer(b) ((vnet_buffer_opaque_t *) (b)->opaque)
Code Review / vpp.git / blobdiff