dpdk_buffer.c File Reference

Allocate/free network buffers with DPDK. More...

Include dependency graph for dpdk_buffer.c:

Go to the source code of this file.

Macros
#define	BUFFERS_PER_COPY   (sizeof (vlib_copy_unit_t) / sizeof (u32))

Functions
uword	vlib_buffer_length_in_chain_slow_path (vlib_main_t *vm, vlib_buffer_t *b_first)
u8 *	format_vlib_buffer (u8 *s, va_list *args)
u8 *	format_vlib_buffer_and_data (u8 *s, va_list *args)
u8 *	format_vlib_buffer_contents (u8 *s, va_list *va)
void	vlib_aligned_memcpy (void *_dst, void *_src, int n_bytes)
static void	fill_unaligned (vlib_main_t *vm, vlib_buffer_free_list_t *free_list, uword n_unaligned_buffers)
static void	trim_aligned (vlib_buffer_free_list_t *f)
static void	merge_free_lists (vlib_buffer_free_list_t *dst, vlib_buffer_free_list_t *src)
static u32	vlib_buffer_get_free_list_with_size (vlib_main_t *vm, u32 size)
static u32	vlib_buffer_create_free_list_helper (vlib_main_t *vm, u32 n_data_bytes, u32 is_public, u32 is_default, u8 *name)
u32	vlib_buffer_create_free_list (vlib_main_t *vm, u32 n_data_bytes, char *fmt,...)
u32	vlib_buffer_get_or_create_free_list (vlib_main_t *vm, u32 n_data_bytes, char *fmt,...)
static void	del_free_list (vlib_main_t *vm, vlib_buffer_free_list_t *f)
void	vlib_buffer_delete_free_list (vlib_main_t *vm, u32 free_list_index)
static uword	fill_free_list (vlib_main_t *vm, vlib_buffer_free_list_t *fl, uword min_free_buffers)
static uword	copy_alignment (u32 *x)
static u32	alloc_from_free_list (vlib_main_t *vm, vlib_buffer_free_list_t *free_list, u32 *alloc_buffers, u32 n_alloc_buffers)
u32	vlib_buffer_alloc (vlib_main_t *vm, u32 *buffers, u32 n_buffers)
	Allocate buffers into supplied array. More...
u32	vlib_buffer_alloc_from_free_list (vlib_main_t *vm, u32 *buffers, u32 n_buffers, u32 free_list_index)
	Allocate buffers from specific freelist into supplied array. More...
static void	add_buffer_to_free_list (vlib_main_t *vm, vlib_buffer_free_list_t *f, u32 buffer_index, u8 do_init)
static vlib_buffer_free_list_t *	buffer_get_free_list (vlib_main_t *vm, vlib_buffer_t *b, u32 *index)
void *	vlib_set_buffer_free_callback (vlib_main_t *vm, void *fp)
static_always_inline void	vlib_buffer_free_inline (vlib_main_t *vm, u32 *buffers, u32 n_buffers, u32 follow_buffer_next)
void	vlib_buffer_free (vlib_main_t *vm, u32 *buffers, u32 n_buffers)
	Free buffers Frees the entire buffer chain for each buffer. More...
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_packet_template_buffer_init (vlib_main_t *vm, vlib_buffer_free_list_t *fl, u32 *buffers, u32 n_buffers)
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_physmem_alloc, char *fmt,...)
void *	vlib_packet_template_get_packet (vlib_main_t *vm, vlib_packet_template_t *t, u32 *bi_result)
u32	vlib_buffer_add_data (vlib_main_t *vm, u32 free_list_index, u32 buffer_index, void *data, u32 n_data_bytes)
u16	vlib_buffer_chain_append_data_with_alloc (vlib_main_t *vm, u32 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 *b_first)
clib_error_t *	vlib_buffer_pool_create (vlib_main_t *vm, unsigned num_mbufs, unsigned socket_id)
static void	vlib_serialize_tx (serialize_main_header_t *m, serialize_stream_t *s)
static void	vlib_serialize_rx (serialize_main_header_t *m, serialize_stream_t *s)
static void	serialize_open_vlib_helper (serialize_main_t *m, vlib_main_t *vm, vlib_serialize_buffer_main_t *sm, uword is_read)
void	serialize_open_vlib_buffer (serialize_main_t *m, vlib_main_t *vm, vlib_serialize_buffer_main_t *sm)
void	unserialize_open_vlib_buffer (serialize_main_t *m, vlib_main_t *vm, vlib_serialize_buffer_main_t *sm)
u32	serialize_close_vlib_buffer (serialize_main_t *m)
void	unserialize_close_vlib_buffer (serialize_main_t *m)
static u8 *	format_vlib_buffer_free_list (u8 *s, va_list *va)
static clib_error_t *	show_buffers (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	buffer_state_validation_init (vlib_main_t *vm)

Variables
vlib_main_t **	vlib_mains
static vlib_cli_command_t	show_buffers_command
	(constructor) VLIB_CLI_COMMAND (show_buffers_command) More...
u32 *	vlib_buffer_state_validation_lock
uword *	vlib_buffer_state_validation_hash
void *	vlib_buffer_state_heap

Detailed Description

Allocate/free network buffers with DPDK.

Definition in file dpdk_buffer.c.

Macro Definition Documentation

#define BUFFERS_PER_COPY   (sizeof (vlib_copy_unit_t) / sizeof (u32))

Definition at line 221 of file dpdk_buffer.c.

Function Documentation

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

inlinestatic

Definition at line 666 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static u32 alloc_from_free_list ( vlib_main_t *  vm, vlib_buffer_free_list_t *  free_list, u32 *  alloc_buffers, u32  n_alloc_buffers  )

static

Definition at line 529 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static vlib_buffer_free_list_t* buffer_get_free_list ( vlib_main_t *  vm, vlib_buffer_t *  b, u32 *  index  )

inlinestatic

Definition at line 679 of file dpdk_buffer.c.

Here is the caller graph for this function:

static clib_error_t* buffer_state_validation_init ( vlib_main_t *  vm )

static

Definition at line 1353 of file dpdk_buffer.c.

Here is the call graph for this function:

static uword copy_alignment ( u32 *  x )

inlinestatic

Definition at line 523 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void del_free_list ( vlib_main_t *  vm, vlib_buffer_free_list_t *  f  )

static

Definition at line 407 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static uword fill_free_list ( vlib_main_t *  vm, vlib_buffer_free_list_t *  fl, uword  min_free_buffers  )

static

Definition at line 459 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void fill_unaligned ( vlib_main_t *  vm, vlib_buffer_free_list_t *  free_list, uword  n_unaligned_buffers  )

static

Definition at line 225 of file dpdk_buffer.c.

Here is the caller graph for this function:

u8* format_vlib_buffer	(	u8 *	s,
		va_list *	args
	)

Definition at line 99 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

u8* format_vlib_buffer_and_data	(	u8 *	s,
		va_list *	args
	)

Definition at line 129 of file dpdk_buffer.c.

Here is the call graph for this function:

u8* format_vlib_buffer_contents	(	u8 *	s,
		va_list *	va
	)

Definition at line 141 of file dpdk_buffer.c.

Here is the call graph for this function:

static u8* format_vlib_buffer_free_list ( u8 *  s, va_list *  va  )

static

Definition at line 1284 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void merge_free_lists ( vlib_buffer_free_list_t *  dst, vlib_buffer_free_list_t *  src  )

static

Definition at line 279 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

u32 serialize_close_vlib_buffer

(

serialize_main_t *

m

)

Definition at line 1246 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

void serialize_open_vlib_buffer	(	serialize_main_t *	m,
		vlib_main_t *	vm,
		vlib_serialize_buffer_main_t *	sm
	)

Definition at line 1232 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void serialize_open_vlib_helper ( serialize_main_t *  m, vlib_main_t *  vm, vlib_serialize_buffer_main_t *  sm, uword  is_read  )

static

Definition at line 1208 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static clib_error_t* show_buffers ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1310 of file dpdk_buffer.c.

Here is the call graph for this function:

static void trim_aligned ( vlib_buffer_free_list_t *  f )

static

Definition at line 251 of file dpdk_buffer.c.

Here is the caller graph for this function:

void unserialize_close_vlib_buffer

(

serialize_main_t *

m

)

Definition at line 1271 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

void unserialize_open_vlib_buffer	(	serialize_main_t *	m,
		vlib_main_t *	vm,
		vlib_serialize_buffer_main_t *	sm
	)

Definition at line 1239 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

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

Definition at line 161 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

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

Definition at line 851 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

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

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 643 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

u32 vlib_buffer_alloc_from_free_list	(	vlib_main_t *	vm,
		u32 *	buffers,
		u32	n_buffers,
		u32	free_list_index
	)

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 655 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

u16 vlib_buffer_chain_append_data_with_alloc	(	vlib_main_t *	vm,
		u32	free_list_index,
		vlib_buffer_t *	first,
		vlib_buffer_t **	last,
		void *	data,
		u16	data_len
	)

Definition at line 908 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

void vlib_buffer_chain_validate	(	vlib_main_t *	vm,
		vlib_buffer_t *	b_first
	)

Definition at line 946 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

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

Definition at line 366 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static u32 vlib_buffer_create_free_list_helper ( vlib_main_t *  vm, u32  n_data_bytes, u32  is_public, u32  is_default, u8 *  name  )

static

Definition at line 317 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

void vlib_buffer_delete_free_list	(	vlib_main_t *	vm,
		u32	free_list_index
	)

Definition at line 434 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

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

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 766 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static_always_inline void vlib_buffer_free_inline	(	vlib_main_t *	vm,
		u32 *	buffers,
		u32	n_buffers,
		u32	follow_buffer_next
	)

Definition at line 699 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

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.

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 773 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static u32 vlib_buffer_get_free_list_with_size ( vlib_main_t *  vm, u32  size  )

inlinestatic

Definition at line 306 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

u32 vlib_buffer_get_or_create_free_list	(	vlib_main_t *	vm,
		u32	n_data_bytes,
		char *	fmt,
			...
	)

Definition at line 383 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

uword vlib_buffer_length_in_chain_slow_path	(	vlib_main_t *	vm,
		vlib_buffer_t *	b_first
	)

Definition at line 82 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

clib_error_t* vlib_buffer_pool_create	(	vlib_main_t *	vm,
		unsigned	num_mbufs,
		unsigned	socket_id
	)

Definition at line 968 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void vlib_packet_template_buffer_init ( vlib_main_t *  vm, vlib_buffer_free_list_t *  fl, u32 *  buffers, u32  n_buffers  )

static

Definition at line 782 of file dpdk_buffer.c.

Here is the call graph for this function:

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

Definition at line 824 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

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_physmem_alloc,
		char *	fmt,
			...
	)

Definition at line 801 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void vlib_serialize_rx ( serialize_main_header_t *  m, serialize_stream_t *  s  )

static

Definition at line 1157 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void vlib_serialize_tx ( serialize_main_header_t *  m, serialize_stream_t *  s  )

static

Definition at line 1085 of file dpdk_buffer.c.

Here is the call graph for this function:

Here is the caller graph for this function:

void* vlib_set_buffer_free_callback	(	vlib_main_t *	vm,
		void *	fp
	)

Definition at line 689 of file dpdk_buffer.c.

Variable Documentation

vlib_cli_command_t show_buffers_command

static

Initial value:

= {
  .path = "show buffers",
  .short_help = "Show packet buffer allocation",
  .function = show_buffers,
}

(constructor) VLIB_CLI_COMMAND (show_buffers_command)

Definition at line 1339 of file dpdk_buffer.c.

void* vlib_buffer_state_heap

Definition at line 1350 of file dpdk_buffer.c.

uword* vlib_buffer_state_validation_hash

Definition at line 1349 of file dpdk_buffer.c.

u32* vlib_buffer_state_validation_lock

Definition at line 1348 of file dpdk_buffer.c.

vlib_main_t** vlib_mains

Definition at line 157 of file dpdk_buffer.c.