buffer_funcs.h File Reference

vlib buffer access methods. More...

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Data Structures
struct	vlib_packet_template_t

Macros
#define	vlib_prefetch_buffer_with_index(vm, bi, type)
	Prefetch buffer metadata by buffer index The first 64 bytes of buffer contains most header information. More...
#define	VLIB_BUFFER_CHAIN_MIN_FIRST_DATA_SIZE   (256)
	minimum data size of first buffer in a buffer chain More...

Enumerations
enum	vlib_buffer_known_state_t { VLIB_BUFFER_UNKNOWN, VLIB_BUFFER_KNOWN_FREE, VLIB_BUFFER_KNOWN_ALLOCATED }

Functions
static vlib_buffer_t *	vlib_get_buffer (vlib_main_t *vm, u32 buffer_index)
	Translate buffer index into buffer pointer. More...
static_always_inline void	vlib_get_buffers_with_offset (vlib_main_t *vm, u32 *bi, void **b, int count, i32 offset)
	Translate array of buffer indices into buffer pointers with offset. More...
static_always_inline void	vlib_get_buffers (vlib_main_t *vm, u32 *bi, vlib_buffer_t **b, int count)
	Translate array of buffer indices into buffer pointers. More...
static u32	vlib_get_buffer_index (vlib_main_t *vm, void *p)
	Translate buffer pointer into buffer index. More...
static_always_inline void	vlib_get_buffer_indices_with_offset (vlib_main_t *vm, void **b, u32 *bi, uword count, i32 offset)
	Translate array of buffer pointers into buffer indices with offset. More...
static_always_inline void	vlib_get_buffer_indices (vlib_main_t *vm, vlib_buffer_t **b, u32 *bi, uword count)
	Translate array of buffer pointers into buffer indices. More...
static vlib_buffer_t *	vlib_get_next_buffer (vlib_main_t *vm, vlib_buffer_t *b)
	Get next buffer in buffer linklist, or zero for end of list. More...
uword	vlib_buffer_length_in_chain_slow_path (vlib_main_t *vm, vlib_buffer_t *b_first)
static uword	vlib_buffer_length_in_chain (vlib_main_t *vm, vlib_buffer_t *b)
	Get length in bytes of the buffer chain. More...
static uword	vlib_buffer_index_length_in_chain (vlib_main_t *vm, u32 bi)
	Get length in bytes of the buffer index buffer chain. More...
static uword	vlib_buffer_contents (vlib_main_t *vm, u32 buffer_index, u8 *contents)
	Copy buffer contents to memory. More...
static u64	vlib_get_buffer_data_physical_address (vlib_main_t *vm, u32 buffer_index)
void	vlib_buffer_validate_alloc_free (vlib_main_t *vm, u32 *buffers, uword n_buffers, vlib_buffer_known_state_t expected_state)
static vlib_buffer_known_state_t	vlib_buffer_is_known (u32 buffer_index)
static void	vlib_buffer_set_known_state (u32 buffer_index, vlib_buffer_known_state_t state)
u8 *	vlib_validate_buffer (vlib_main_t *vm, u32 buffer_index, uword follow_chain)
static u32	vlib_buffer_round_size (u32 size)
static vlib_buffer_free_list_index_t	vlib_buffer_get_free_list_index (vlib_buffer_t *b)
static void	vlib_buffer_set_free_list_index (vlib_buffer_t *b, vlib_buffer_free_list_index_t index)
static u32	vlib_buffer_alloc_from_free_list (vlib_main_t *vm, u32 *buffers, u32 n_buffers, vlib_buffer_free_list_index_t index)
	Allocate buffers from specific freelist into supplied array. More...
static u32	vlib_buffer_alloc (vlib_main_t *vm, u32 *buffers, u32 n_buffers)
	Allocate buffers into supplied array. More...
static u32	vlib_buffer_alloc_to_ring (vlib_main_t *vm, u32 *ring, u32 start, u32 ring_size, u32 n_buffers)
	Allocate buffers into ring. More...
static void	vlib_buffer_free (vlib_main_t *vm, u32 *buffers, u32 n_buffers)
	Free buffers Frees the entire buffer chain for each buffer. More...
static void	vlib_buffer_free_no_next (vlib_main_t *vm, u32 *buffers, u32 n_buffers)
	Free buffers, does not free the buffer chain for each buffer. More...
static void	vlib_buffer_free_one (vlib_main_t *vm, u32 buffer_index)
	Free one buffer Shorthand to free a single buffer chain. More...
static void	vlib_buffer_free_from_ring (vlib_main_t *vm, u32 *ring, u32 start, u32 ring_size, u32 n_buffers)
	Free buffers from ring. More...
static void	vlib_buffer_free_from_ring_no_next (vlib_main_t *vm, u32 *ring, u32 start, u32 ring_size, u32 n_buffers)
	Free buffers from ring without freeing tail buffers. More...
vlib_buffer_free_list_index_t	vlib_buffer_create_free_list (vlib_main_t *vm, u32 n_data_bytes, char *fmt,...)
static void	vlib_buffer_delete_free_list (vlib_main_t *vm, vlib_buffer_free_list_index_t free_list_index)
void	vlib_buffer_free_list_fill_unaligned (vlib_main_t *vm, vlib_buffer_free_list_t *free_list, uword n_unaligned_buffers)
static vlib_buffer_free_list_t *	vlib_buffer_get_buffer_free_list (vlib_main_t *vm, vlib_buffer_t *b, vlib_buffer_free_list_index_t *index)
static vlib_buffer_free_list_t *	vlib_buffer_get_free_list (vlib_main_t *vm, vlib_buffer_free_list_index_t free_list_index)
static u32	vlib_buffer_free_list_buffer_size (vlib_main_t *vm, vlib_buffer_free_list_index_t index)
void	vlib_aligned_memcpy (void *_dst, void *_src, int n_bytes)
static void	vlib_copy_buffers (u32 *dst, u32 *src, u32 n)
u32	vlib_buffer_add_data (vlib_main_t *vm, vlib_buffer_free_list_index_t free_list_index, u32 buffer_index, void *data, u32 n_data_bytes)
static vlib_buffer_t *	vlib_buffer_copy (vlib_main_t *vm, vlib_buffer_t *b)
static u16	vlib_buffer_clone_256 (vlib_main_t *vm, u32 src_buffer, u32 *buffers, u16 n_buffers, u16 head_end_offset)
	Create a maximum of 256 clones of buffer and store them in the supplied array. More...
static u16	vlib_buffer_clone (vlib_main_t *vm, u32 src_buffer, u32 *buffers, u16 n_buffers, u16 head_end_offset)
	Create multiple clones of buffer and store them in the supplied array. More...
static void	vlib_buffer_attach_clone (vlib_main_t *vm, vlib_buffer_t *head, vlib_buffer_t *tail)
	Attach cloned tail to the buffer. More...
static void	vlib_buffer_chain_init (vlib_buffer_t *first)
static vlib_buffer_t *	vlib_buffer_chain_buffer (vlib_main_t *vm, vlib_buffer_t *first, vlib_buffer_t *last, u32 next_bi)
static void	vlib_buffer_chain_increase_length (vlib_buffer_t *first, vlib_buffer_t *last, i32 len)
static u16	vlib_buffer_chain_append_data (vlib_main_t *vm, vlib_buffer_free_list_index_t free_list_index, vlib_buffer_t *first, vlib_buffer_t *last, void *data, u16 data_len)
u16	vlib_buffer_chain_append_data_with_alloc (vlib_main_t *vm, vlib_buffer_free_list_index_t free_list_index, vlib_buffer_t *first, vlib_buffer_t **last, void *data, u16 data_len)
void	vlib_buffer_chain_validate (vlib_main_t *vm, vlib_buffer_t *first)
void	vlib_packet_template_get_packet_helper (vlib_main_t *vm, vlib_packet_template_t *t)
void	vlib_packet_template_init (vlib_main_t *vm, vlib_packet_template_t *t, void *packet_data, uword n_packet_data_bytes, uword min_n_buffers_each_alloc, char *fmt,...)
void *	vlib_packet_template_get_packet (vlib_main_t *vm, vlib_packet_template_t *t, u32 *bi_result)
static void	vlib_packet_template_free (vlib_main_t *vm, vlib_packet_template_t *t)
static u32	unserialize_vlib_buffer_n_bytes (serialize_main_t *m)
static void	vlib_buffer_init_for_free_list (vlib_buffer_t *dst, vlib_buffer_free_list_t *fl)
static void	vlib_buffer_add_to_free_list (vlib_main_t *vm, vlib_buffer_free_list_t *f, u32 buffer_index, u8 do_init)
static void	vlib_validate_buffer_in_use (vlib_buffer_t *b, u32 expected)
static void	vlib_validate_buffer_set_in_use (vlib_buffer_t *b, u32 expected)
static void	vlib_buffer_chain_compress (vlib_main_t *vm, vlib_buffer_t *first, u32 **discard_vector)
	compress buffer chain in a way where the first buffer is at least VLIB_BUFFER_CHAIN_MIN_FIRST_DATA_SIZE long More...
static u32	vlib_buffer_space_left_at_end (vlib_main_t *vm, vlib_buffer_t *b)
static u32	vlib_buffer_chain_linearize (vlib_main_t *vm, vlib_buffer_t *b)

Variables
format_function_t	format_vlib_buffer
format_function_t	format_vlib_buffer_and_data
format_function_t	format_vlib_buffer_contents
u32 *	vlib_buffer_state_validation_lock
uword *	vlib_buffer_state_validation_hash
void *	vlib_buffer_state_heap

Detailed Description

vlib buffer access methods.

Definition in file buffer_funcs.h.

Macro Definition Documentation

#define VLIB_BUFFER_CHAIN_MIN_FIRST_DATA_SIZE   (256)

minimum data size of first buffer in a buffer chain

Definition at line 1211 of file buffer_funcs.h.

#define vlib_prefetch_buffer_with_index	(		vm,
			bi,
			type
	)

Value:

do {                                                    \
    vlib_buffer_t * _b = vlib_get_buffer (vm, bi);      \
    vlib_prefetch_buffer_header (_b, type);             \
  } while (0)

Prefetch buffer metadata by buffer index The first 64 bytes of buffer contains most header information.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
bi	- (u32) buffer index
type	- LOAD, STORE. In most cases, STORE is the right answer

Definition at line 337 of file buffer_funcs.h.

Enumeration Type Documentation

enum vlib_buffer_known_state_t

Enumerator
VLIB_BUFFER_UNKNOWN
VLIB_BUFFER_KNOWN_FREE
VLIB_BUFFER_KNOWN_ALLOCATED

Definition at line 365 of file buffer_funcs.h.

Function Documentation

static u32 unserialize_vlib_buffer_n_bytes ( serialize_main_t *  m )

inlinestatic

Definition at line 1045 of file buffer_funcs.h.

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void vlib_aligned_memcpy	(	void *	_dst,
		void *	_src,
		int	n_bytes
	)

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u32 vlib_buffer_add_data	(	vlib_main_t *	vm,
		vlib_buffer_free_list_index_t	free_list_index,
		u32	buffer_index,
		void *	data,
		u32	n_data_bytes
	)

Definition at line 776 of file buffer.c.

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static void vlib_buffer_add_to_free_list ( vlib_main_t *  vm, vlib_buffer_free_list_t *  f, u32  buffer_index, u8  do_init  )

inlinestatic

Definition at line 1118 of file buffer_funcs.h.

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static u32 vlib_buffer_alloc ( vlib_main_t *  vm, u32 *  buffers, u32  n_buffers  )

inlinestatic

Allocate buffers into supplied array.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffers	- (u32 * ) buffer index array
n_buffers	- (u32) number of buffers requested

Returns

- (u32) number of buffers actually allocated, may be less than the number requested or zero

Definition at line 503 of file buffer_funcs.h.

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static u32 vlib_buffer_alloc_from_free_list ( vlib_main_t *  vm, u32 *  buffers, u32  n_buffers, vlib_buffer_free_list_index_t  index  )

inlinestatic

Allocate buffers from specific freelist into supplied array.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffers	- (u32 * ) buffer index array
n_buffers	- (u32) number of buffers requested

Returns

- (u32) number of buffers actually allocated, may be less than the number requested or zero

Definition at line 444 of file buffer_funcs.h.

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static u32 vlib_buffer_alloc_to_ring ( vlib_main_t *  vm, u32 *  ring, u32  start, u32  ring_size, u32  n_buffers  )

inlinestatic

Allocate buffers into ring.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffers	- (u32 * ) buffer index ring
start	- (u32) first slot in the ring
ring_size	- (u32) ring size
n_buffers	- (u32) number of buffers requested

Returns

- (u32) number of buffers actually allocated, may be less than the number requested or zero

Definition at line 520 of file buffer_funcs.h.

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static void vlib_buffer_attach_clone ( vlib_main_t *  vm, vlib_buffer_t *  head, vlib_buffer_t *  tail  )

inlinestatic

Attach cloned tail to the buffer.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
head	- (vlib_buffer_t *) head buffer
tail	- (Vlib buffer_t *) tail buffer to clone and attach to head

Definition at line 910 of file buffer_funcs.h.

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static u16 vlib_buffer_chain_append_data ( vlib_main_t *  vm, vlib_buffer_free_list_index_t  free_list_index, vlib_buffer_t *  first, vlib_buffer_t *  last, void *  data, u16  data_len  )

inlinestatic

Definition at line 976 of file buffer_funcs.h.

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u16 vlib_buffer_chain_append_data_with_alloc	(	vlib_main_t *	vm,
		vlib_buffer_free_list_index_t	free_list_index,
		vlib_buffer_t *	first,
		vlib_buffer_t **	last,
		void *	data,
		u16	data_len
	)

Definition at line 833 of file buffer.c.

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static vlib_buffer_t* vlib_buffer_chain_buffer ( vlib_main_t *  vm, vlib_buffer_t *  first, vlib_buffer_t *  last, u32  next_bi  )

inlinestatic

Definition at line 947 of file buffer_funcs.h.

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static void vlib_buffer_chain_compress ( vlib_main_t *  vm, vlib_buffer_t *  first, u32 **  discard_vector  )

inlinestatic

compress buffer chain in a way where the first buffer is at least VLIB_BUFFER_CHAIN_MIN_FIRST_DATA_SIZE long

Parameters

[in]	vm	- vlib_main
[in,out]	first	- first buffer in chain
[in,out]	discard_vector	- vector of buffer indexes which were removed from the chain

Definition at line 1223 of file buffer_funcs.h.

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static void vlib_buffer_chain_increase_length ( vlib_buffer_t *  first, vlib_buffer_t *  last, i32  len  )

inlinestatic

Definition at line 964 of file buffer_funcs.h.

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static void vlib_buffer_chain_init ( vlib_buffer_t *  first )

inlinestatic

Definition at line 937 of file buffer_funcs.h.

static u32 vlib_buffer_chain_linearize ( vlib_main_t *  vm, vlib_buffer_t *  b  )

inlinestatic

Definition at line 1280 of file buffer_funcs.h.

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void vlib_buffer_chain_validate	(	vlib_main_t *	vm,
		vlib_buffer_t *	first
	)

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static u16 vlib_buffer_clone ( vlib_main_t *  vm, u32  src_buffer, u32 *  buffers, u16  n_buffers, u16  head_end_offset  )

inlinestatic

Create multiple clones of buffer and store them in the supplied array.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
src_buffer	- (u32) source buffer index
buffers	- (u32 * ) buffer index array
n_buffers	- (u16) number of buffer clones requested (<=256)
head_end_offset	- (u16) offset relative to current position where packet head ends

Returns

- (u16) number of buffers actually cloned, may be less than the number requested or zero

Definition at line 879 of file buffer_funcs.h.

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static u16 vlib_buffer_clone_256 ( vlib_main_t *  vm, u32  src_buffer, u32 *  buffers, u16  n_buffers, u16  head_end_offset  )

inlinestatic

Create a maximum of 256 clones of buffer and store them in the supplied array.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
src_buffer	- (u32) source buffer index
buffers	- (u32 * ) buffer index array
n_buffers	- (u16) number of buffer clones requested (<=256)
head_end_offset	- (u16) offset relative to current position where packet head ends

Returns

- (u16) number of buffers actually cloned, may be less than the number requested or zero

Definition at line 797 of file buffer_funcs.h.

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static uword vlib_buffer_contents ( vlib_main_t *  vm, u32  buffer_index, u8 *  contents  )

inlinestatic

Copy buffer contents to memory.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffer_index	- (u32) buffer index
contents	- (u8 *) memory, must be large enough

Returns

- (uword) length of buffer chain

Definition at line 297 of file buffer_funcs.h.

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static vlib_buffer_t* vlib_buffer_copy ( vlib_main_t *  vm, vlib_buffer_t *  b  )

inlinestatic

Definition at line 728 of file buffer_funcs.h.

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vlib_buffer_free_list_index_t vlib_buffer_create_free_list	(	vlib_main_t *	vm,
		u32	n_data_bytes,
		char *	fmt,
			...
	)

Definition at line 415 of file buffer.c.

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static void vlib_buffer_delete_free_list ( vlib_main_t *  vm, vlib_buffer_free_list_index_t  free_list_index  )

inlinestatic

Definition at line 648 of file buffer_funcs.h.

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static void vlib_buffer_free ( vlib_main_t *  vm, u32 *  buffers, u32  n_buffers  )

inlinestatic

Free buffers Frees the entire buffer chain for each buffer.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffers	- (u32 * ) buffer index array
n_buffers	- (u32) number of buffers to free

Definition at line 547 of file buffer_funcs.h.

static void vlib_buffer_free_from_ring ( vlib_main_t *  vm, u32 *  ring, u32  start, u32  ring_size, u32  n_buffers  )

inlinestatic

Free buffers from ring.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffers	- (u32 * ) buffer index ring
start	- (u32) first slot in the ring
ring_size	- (u32) ring size
n_buffers	- (u32) number of buffers

Definition at line 602 of file buffer_funcs.h.

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static void vlib_buffer_free_from_ring_no_next ( vlib_main_t *  vm, u32 *  ring, u32  start, u32  ring_size, u32  n_buffers  )

inlinestatic

Free buffers from ring without freeing tail buffers.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffers	- (u32 * ) buffer index ring
start	- (u32) first slot in the ring
ring_size	- (u32) ring size
n_buffers	- (u32) number of buffers

Definition at line 627 of file buffer_funcs.h.

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static u32 vlib_buffer_free_list_buffer_size ( vlib_main_t *  vm, vlib_buffer_free_list_index_t  index  )

inlinestatic

Definition at line 689 of file buffer_funcs.h.

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void vlib_buffer_free_list_fill_unaligned	(	vlib_main_t *	vm,
		vlib_buffer_free_list_t *	free_list,
		uword	n_unaligned_buffers
	)

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static void vlib_buffer_free_no_next ( vlib_main_t *  vm, u32 *  buffers, u32  n_buffers  )

inlinestatic

Free buffers, does not free the buffer chain for each buffer.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffers	- (u32 * ) buffer index array
n_buffers	- (u32) number of buffers to free

Definition at line 568 of file buffer_funcs.h.

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static void vlib_buffer_free_one ( vlib_main_t *  vm, u32  buffer_index  )

inlinestatic

Free one buffer Shorthand to free a single buffer chain.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffer_index	- (u32) buffer index to free

Definition at line 588 of file buffer_funcs.h.

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static vlib_buffer_free_list_t* vlib_buffer_get_buffer_free_list ( vlib_main_t *  vm, vlib_buffer_t *  b, vlib_buffer_free_list_index_t *  index  )

inlinestatic

Definition at line 665 of file buffer_funcs.h.

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static vlib_buffer_free_list_t* vlib_buffer_get_free_list ( vlib_main_t *  vm, vlib_buffer_free_list_index_t  free_list_index  )

inlinestatic

Definition at line 675 of file buffer_funcs.h.

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static vlib_buffer_free_list_index_t vlib_buffer_get_free_list_index ( vlib_buffer_t *  b )

inlinestatic

Definition at line 414 of file buffer_funcs.h.

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static uword vlib_buffer_index_length_in_chain ( vlib_main_t *  vm, u32  bi  )

inlinestatic

Get length in bytes of the buffer index buffer chain.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
bi	- (u32) buffer index

Returns

- (uword) length of buffer chain

Definition at line 283 of file buffer_funcs.h.

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static void vlib_buffer_init_for_free_list ( vlib_buffer_t *  dst, vlib_buffer_free_list_t *  fl  )

inlinestatic

Definition at line 1078 of file buffer_funcs.h.

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static vlib_buffer_known_state_t vlib_buffer_is_known ( u32  buffer_index )

inlinestatic

Definition at line 381 of file buffer_funcs.h.

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static uword vlib_buffer_length_in_chain ( vlib_main_t *  vm, vlib_buffer_t *  b  )

inlinestatic

Get length in bytes of the buffer chain.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
b	- (void *) buffer pointer

Returns

- (uword) length of buffer chain

Definition at line 263 of file buffer_funcs.h.

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uword vlib_buffer_length_in_chain_slow_path	(	vlib_main_t *	vm,
		vlib_buffer_t *	b_first
	)

Definition at line 55 of file buffer.c.

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static u32 vlib_buffer_round_size ( u32  size )

inlinestatic

Definition at line 408 of file buffer_funcs.h.

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static void vlib_buffer_set_free_list_index ( vlib_buffer_t *  b, vlib_buffer_free_list_index_t  index  )

inlinestatic

Definition at line 423 of file buffer_funcs.h.

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static void vlib_buffer_set_known_state ( u32  buffer_index, vlib_buffer_known_state_t  state  )

inlinestatic

Definition at line 392 of file buffer_funcs.h.

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static u32 vlib_buffer_space_left_at_end ( vlib_main_t *  vm, vlib_buffer_t *  b  )

inlinestatic

Definition at line 1273 of file buffer_funcs.h.

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void vlib_buffer_validate_alloc_free	(	vlib_main_t *	vm,
		u32 *	buffers,
		uword	n_buffers,
		vlib_buffer_known_state_t	expected_state
	)

Definition at line 309 of file buffer.c.

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static void vlib_copy_buffers ( u32 *  dst, u32 *  src, u32  n  )

inlinestatic

Definition at line 700 of file buffer_funcs.h.

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static vlib_buffer_t* vlib_get_buffer ( vlib_main_t *  vm, u32  buffer_index  )

inlinestatic

Translate buffer index into buffer pointer.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
buffer_index	- (u32) buffer index

Returns

- (vlib_buffer_t *) buffer pointer

Definition at line 58 of file buffer_funcs.h.

static u64 vlib_get_buffer_data_physical_address ( vlib_main_t *  vm, u32  buffer_index  )

inlinestatic

Definition at line 319 of file buffer_funcs.h.

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static u32 vlib_get_buffer_index ( vlib_main_t *  vm, void *  p  )

inlinestatic

Translate buffer pointer into buffer index.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
p	- (void *) buffer pointer

Returns

- (u32) buffer index

Definition at line 154 of file buffer_funcs.h.

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static_always_inline void vlib_get_buffer_indices	(	vlib_main_t *	vm,
		vlib_buffer_t **	b,
		u32 *	bi,
		uword	count
	)

Translate array of buffer pointers into buffer indices.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
b	- (vlib_buffer_t **) array of buffer pointers
bi	- (u32 *) array to store buffer indices
count	- (uword) number of elements

Definition at line 234 of file buffer_funcs.h.

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static_always_inline void vlib_get_buffer_indices_with_offset	(	vlib_main_t *	vm,
		void **	b,
		u32 *	bi,
		uword	count,
		i32	offset
	)

Translate array of buffer pointers into buffer indices with offset.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
b	- (void **) array of buffer pointers
bi	- (u32 *) array to store buffer indices
count	- (uword) number of elements
offset	- (i32) offset applied to each pointer

Definition at line 173 of file buffer_funcs.h.

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static_always_inline void vlib_get_buffers	(	vlib_main_t *	vm,
		u32 *	bi,
		vlib_buffer_t **	b,
		int	count
	)

Translate array of buffer indices into buffer pointers.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
bi	- (u32 *) array of buffer indices
b	- (vlib_buffer_t **) array to store buffer pointers
count	- (uword) number of elements

Definition at line 141 of file buffer_funcs.h.

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static_always_inline void vlib_get_buffers_with_offset	(	vlib_main_t *	vm,
		u32 *	bi,
		void **	b,
		int	count,
		i32	offset
	)

Translate array of buffer indices into buffer pointers with offset.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
bi	- (u32 *) array of buffer indices
b	- (void **) array to store buffer pointers
count	- (uword) number of elements
offset	- (i32) offset applied to each pointer

Definition at line 76 of file buffer_funcs.h.

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static vlib_buffer_t* vlib_get_next_buffer ( vlib_main_t *  vm, vlib_buffer_t *  b  )

inlinestatic

Get next buffer in buffer linklist, or zero for end of list.

Parameters

vm	- (vlib_main_t *) vlib main data structure pointer
b	- (void *) buffer pointer

Returns

- (vlib_buffer_t *) next buffer, or NULL

Definition at line 247 of file buffer_funcs.h.

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static void vlib_packet_template_free ( vlib_main_t *  vm, vlib_packet_template_t *  t  )

inlinestatic

Definition at line 1039 of file buffer_funcs.h.

void* vlib_packet_template_get_packet	(	vlib_main_t *	vm,
		vlib_packet_template_t *	t,
		u32 *	bi_result
	)

Definition at line 738 of file buffer.c.

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void vlib_packet_template_get_packet_helper	(	vlib_main_t *	vm,
		vlib_packet_template_t *	t
	)

Definition at line 758 of file buffer.c.

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void vlib_packet_template_init	(	vlib_main_t *	vm,
		vlib_packet_template_t *	t,
		void *	packet_data,
		uword	n_packet_data_bytes,
		uword	min_n_buffers_each_alloc,
		char *	fmt,
			...
	)

Definition at line 690 of file buffer.c.

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u8* vlib_validate_buffer	(	vlib_main_t *	vm,
		u32	buffer_index,
		uword	follow_chain
	)

Definition at line 225 of file buffer.c.

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static void vlib_validate_buffer_in_use ( vlib_buffer_t *  b, u32  expected  )

inlinestatic

Definition at line 1148 of file buffer_funcs.h.

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static void vlib_validate_buffer_set_in_use ( vlib_buffer_t *  b, u32  expected  )

inlinestatic

Definition at line 1192 of file buffer_funcs.h.

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Variable Documentation

format_function_t format_vlib_buffer

Definition at line 1007 of file buffer_funcs.h.

format_function_t format_vlib_buffer_and_data

Definition at line 1007 of file buffer_funcs.h.

format_function_t format_vlib_buffer_contents

Definition at line 1007 of file buffer_funcs.h.

void* vlib_buffer_state_heap

Definition at line 576 of file buffer.c.

uword* vlib_buffer_state_validation_hash

Definition at line 575 of file buffer.c.

u32* vlib_buffer_state_validation_lock

Definition at line 574 of file buffer.c.