buffer.h File Reference

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Data Structures
struct	vnet_buffer_opaque_t
struct	vnet_buffer_opaque2_t

Macros
#define	foreach_vnet_buffer_flag
	Flags that are set in the high order bits of ((vlib_buffer*)b)->flags. More...
#define	VNET_BUFFER_FLAGS_ALL_AVAIL
#define	VNET_BUFFER_FLAGS_VLAN_BITS   (VNET_BUFFER_F_VLAN_1_DEEP | VNET_BUFFER_F_VLAN_2_DEEP)
#define	foreach_vnet_buffer_offload_flag
#define	foreach_buffer_opaque_union_subtype
#define	VNET_REWRITE_TOTAL_BYTES   (VLIB_BUFFER_PRE_DATA_SIZE)
#define	vnet_buffer(b)   ((vnet_buffer_opaque_t *) (b)->opaque)
#define	vnet_buffer2(b)   ((vnet_buffer_opaque2_t *) (b)->opaque2)
#define	gso_mtu_sz(b)

Enumerations
enum	{ foreach_vnet_buffer_flag }
enum	{ foreach_vnet_buffer_flag }
enum	vnet_buffer_oflags_t { foreach_vnet_buffer_offload_flag }

Functions
	STATIC_ASSERT (((VNET_BUFFER_FLAGS_ALL_AVAIL &VLIB_BUFFER_FLAGS_ALL)==0), "VLIB / VNET buffer flags overlap")
	STATIC_ASSERT (sizeof(vnet_buffer_opaque_t)<=STRUCT_SIZE_OF(vlib_buffer_t, opaque), "VNET buffer meta-data too large for vlib_buffer")
	STATIC_ASSERT (sizeof(vnet_buffer_opaque2_t)<=STRUCT_SIZE_OF(vlib_buffer_t, opaque2), "VNET buffer opaque2 meta-data too large for vlib_buffer")
static_always_inline void	vnet_buffer_offload_flags_set (vlib_buffer_t *b, vnet_buffer_oflags_t oflags)
static_always_inline void	vnet_buffer_offload_flags_clear (vlib_buffer_t *b, vnet_buffer_oflags_t oflags)

Variables
save_rewrite_length must be aligned so that reass doesn t overwrite	it
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

Macro Definition Documentation

foreach_buffer_opaque_union_subtype

#define foreach_buffer_opaque_union_subtype

Value:

_(ip)                                           \
_(l2)                                           \
_(l2t)                                          \
_(l2_classify)                                  \
_(policer)                                      \
_(ipsec)                                        \
_(map)                                          \
_(map_t)                                        \
_(ip_frag)                                      \
_(mpls)                                         \
_(tcp)

Definition at line 125 of file buffer.h.

foreach_vnet_buffer_flag

foreach_vnet_buffer_flag

Value:

  _ (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)

Flags that are set in the high order bits of ((vlib_buffer*)b)->flags.

Definition at line 49 of file buffer.h.

foreach_vnet_buffer_offload_flag

#define foreach_vnet_buffer_offload_flag

Value:

  _ (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_TCP_CKSUM, "offload-outer-tcp-cksum", 1)                        \
  _ (5, OUTER_UDP_CKSUM, "offload-outer-udp-cksum", 1)

Definition at line 110 of file buffer.h.

gso_mtu_sz

#define gso_mtu_sz

(

b

)

Value:

                       (vnet_buffer2(b)->gso_size + \
                       vnet_buffer2(b)->gso_l4_hdr_sz + \
                       vnet_buffer(b)->l4_hdr_offset - \
                       vnet_buffer (b)->l3_hdr_offset)

Definition at line 509 of file buffer.h.

vnet_buffer

#define vnet_buffer

(

b

)

((vnet_buffer_opaque_t *) (b)->opaque)

Definition at line 437 of file buffer.h.

vnet_buffer2

#define vnet_buffer2

(

b

)

((vnet_buffer_opaque2_t *) (b)->opaque2)

Definition at line 499 of file buffer.h.

VNET_BUFFER_FLAGS_ALL_AVAIL

#define VNET_BUFFER_FLAGS_ALL_AVAIL

Value:

  (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)

Definition at line 84 of file buffer.h.

VNET_BUFFER_FLAGS_VLAN_BITS

#define VNET_BUFFER_FLAGS_VLAN_BITS   (VNET_BUFFER_F_VLAN_1_DEEP | VNET_BUFFER_F_VLAN_2_DEEP)

Definition at line 89 of file buffer.h.

VNET_REWRITE_TOTAL_BYTES

#define VNET_REWRITE_TOTAL_BYTES   (VLIB_BUFFER_PRE_DATA_SIZE)

Definition at line 407 of file buffer.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
foreach_vnet_buffer_flag

Definition at line 92 of file buffer.h.

anonymous enum

anonymous enum

Enumerator
foreach_vnet_buffer_flag

Definition at line 99 of file buffer.h.

vnet_buffer_oflags_t

enum vnet_buffer_oflags_t

Enumerator
foreach_vnet_buffer_offload_flag

Definition at line 118 of file buffer.h.

Function Documentation

STATIC_ASSERT() [1/3]

STATIC_ASSERT	(	((VNET_BUFFER_FLAGS_ALL_AVAIL &VLIB_BUFFER_FLAGS_ALL)==0)	,
		"VLIB / VNET buffer flags overlap"
	)

STATIC_ASSERT() [2/3]

STATIC_ASSERT	(	sizeof(vnet_buffer_opaque2_t)<=STRUCT_SIZE_OF(vlib_buffer_t, opaque2)	,
		"VNET buffer opaque2 meta-data too large for vlib_buffer"
	)

STATIC_ASSERT() [3/3]

STATIC_ASSERT	(	sizeof(vnet_buffer_opaque_t)<=STRUCT_SIZE_OF(vlib_buffer_t, opaque)	,
		"VNET buffer meta-data too large for vlib_buffer"
	)

vnet_buffer_offload_flags_clear()

static_always_inline void vnet_buffer_offload_flags_clear	(	vlib_buffer_t *	b,
		vnet_buffer_oflags_t	oflags
	)

Definition at line 538 of file buffer.h.

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vnet_buffer_offload_flags_set()

static_always_inline void vnet_buffer_offload_flags_set	(	vlib_buffer_t *	b,
		vnet_buffer_oflags_t	oflags
	)

Definition at line 522 of file buffer.h.

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Variable Documentation

format_vnet_buffer

format_function_t format_vnet_buffer

Definition at line 515 of file buffer.h.

format_vnet_buffer_flags

format_function_t format_vnet_buffer_flags

Definition at line 517 of file buffer.h.

format_vnet_buffer_offload

format_function_t format_vnet_buffer_offload

Definition at line 516 of file buffer.h.

format_vnet_buffer_opaque

format_function_t format_vnet_buffer_opaque

Definition at line 518 of file buffer.h.

format_vnet_buffer_opaque2

format_function_t format_vnet_buffer_opaque2

Definition at line 519 of file buffer.h.

it

save_rewrite_length must be aligned so that reass doesn t overwrite it

Definition at line 421 of file buffer.h.