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Vector Packet Processing
Data Structures | Macros | Functions | Variables
buffer_funcs.h File Reference

vlib buffer access methods. More...

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Data Structures

struct  vlib_packet_template_t
 
union  vlib_buffer_union_t
 

Macros

#define always_inline   static inline
 
#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...
 

Functions

static vlib_buffer_t * vlib_get_buffer (vlib_main_t *vm, u32 buffer_index)
 Translate buffer index into buffer pointer. More...
 
static u32 vlib_get_buffer_index (vlib_main_t *vm, void *p)
 Translate buffer pointer into buffer index. 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)
 
clib_error_t * vlib_buffer_pool_create (vlib_main_t *vm, unsigned num_mbufs, unsigned socket_id)
 
u32 vlib_buffer_alloc (vlib_main_t *vm, u32 *buffers, u32 n_buffers)
 Allocate buffers into supplied array. More...
 
static u32 vlib_buffer_round_size (u32 size)
 
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...
 
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_buffer_free_one (vlib_main_t *vm, u32 buffer_index)
 Free one buffer Shorthand to free a single buffer chain. More...
 
u32 vlib_buffer_create_free_list (vlib_main_t *vm, u32 n_data_bytes, char *fmt,...)
 
void vlib_buffer_delete_free_list (vlib_main_t *vm, u32 free_list_index)
 
u32 vlib_buffer_get_or_create_free_list (vlib_main_t *vm, u32 n_data_bytes, char *fmt,...)
 
static vlib_buffer_free_list_t * vlib_buffer_get_free_list (vlib_main_t *vm, u32 free_list_index)
 
static u32 vlib_buffer_free_list_buffer_size (vlib_main_t *vm, u32 free_list_index)
 
void vlib_aligned_memcpy (void *_dst, void *_src, int n_bytes)
 
static void vlib_copy_buffers (u32 *dst, u32 *src, u32 n)
 
static void * vlib_physmem_alloc_aligned (vlib_main_t *vm, clib_error_t **error, uword n_bytes, uword alignment)
 
static void * vlib_physmem_alloc (vlib_main_t *vm, clib_error_t **error, uword n_bytes)
 
static void vlib_physmem_free (vlib_main_t *vm, void *mem)
 
static u64 vlib_physmem_virtual_to_physical (vlib_main_t *vm, void *mem)
 
u32 vlib_buffer_add_data (vlib_main_t *vm, u32 free_list_index, u32 buffer_index, void *data, u32 n_data_bytes)
 
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, u32 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, 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 *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_physmem_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_init_two_for_free_list (vlib_buffer_t *_dst0, vlib_buffer_t *_dst1, vlib_buffer_free_list_t *fl)
 
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)
 

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 always_inline   static inline

Definition at line 51 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)
type
bad routing header type(not 4)") sr_error (NO_MORE_SEGMENTS
vlib_prefetch_buffer_header
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:163
vlib_get_buffer
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:69

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 182 of file buffer_funcs.h.

Function Documentation

static u32 unserialize_vlib_buffer_n_bytes ( serialize_main_t *  m)
inlinestatic

Definition at line 566 of file buffer_funcs.h.

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

Definition at line 161 of file dpdk_buffer.c.

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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.

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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.

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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.

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static u16 vlib_buffer_chain_append_data ( vlib_main_t *  vm,
u32  free_list_index,
vlib_buffer_t *  first,
vlib_buffer_t *  last,
void *  data,
u16  data_len 
)
inlinestatic

Definition at line 495 of file buffer_funcs.h.

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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.

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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 447 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 477 of file buffer_funcs.h.

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static void vlib_buffer_chain_init ( vlib_buffer_t *  first)
inlinestatic

Definition at line 432 of file buffer_funcs.h.

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void vlib_buffer_chain_validate ( vlib_main_t *  vm,
vlib_buffer_t *  first 
)

Definition at line 946 of file dpdk_buffer.c.

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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 143 of file buffer_funcs.h.

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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.

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void vlib_buffer_delete_free_list ( vlib_main_t *  vm,
u32  free_list_index 
)

Definition at line 434 of file dpdk_buffer.c.

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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.

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static u32 vlib_buffer_free_list_buffer_size ( vlib_main_t *  vm,
u32  free_list_index 
)
inlinestatic

Definition at line 351 of file buffer_funcs.h.

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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.

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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 322 of file buffer_funcs.h.

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static vlib_buffer_free_list_t* vlib_buffer_get_free_list ( vlib_main_t *  vm,
u32  free_list_index 
)
inlinestatic

Definition at line 337 of file buffer_funcs.h.

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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.

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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 129 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 606 of file buffer_funcs.h.

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static void vlib_buffer_init_two_for_free_list ( vlib_buffer_t *  _dst0,
vlib_buffer_t *  _dst1,
vlib_buffer_free_list_t *  fl 
)
inlinestatic

Definition at line 641 of file buffer_funcs.h.

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 112 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 82 of file dpdk_buffer.c.

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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.

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static u32 vlib_buffer_round_size ( u32  size)
inlinestatic

Definition at line 271 of file buffer_funcs.h.

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

Definition at line 362 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 69 of file buffer_funcs.h.

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static u64 vlib_get_buffer_data_physical_address ( vlib_main_t *  vm,
u32  buffer_index 
)
inlinestatic

Definition at line 165 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 82 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 96 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 560 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 824 of file dpdk_buffer.c.

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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_physmem_alloc,
char *  fmt,
  ... 
)

Definition at line 801 of file dpdk_buffer.c.

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static void* vlib_physmem_alloc ( vlib_main_t *  vm,
clib_error_t **  error,
uword  n_bytes 
)
inlinestatic

Definition at line 400 of file buffer_funcs.h.

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static void* vlib_physmem_alloc_aligned ( vlib_main_t *  vm,
clib_error_t **  error,
uword  n_bytes,
uword  alignment 
)
inlinestatic

Definition at line 384 of file buffer_funcs.h.

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static void vlib_physmem_free ( vlib_main_t *  vm,
void *  mem 
)
inlinestatic

Definition at line 407 of file buffer_funcs.h.

static u64 vlib_physmem_virtual_to_physical ( vlib_main_t *  vm,
void *  mem 
)
inlinestatic

Definition at line 413 of file buffer_funcs.h.

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static void vlib_validate_buffer_in_use ( vlib_buffer_t *  b,
u32  expected 
)
inlinestatic

Definition at line 678 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 722 of file buffer_funcs.h.

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Variable Documentation

format_function_t format_vlib_buffer

Definition at line 525 of file buffer_funcs.h.

format_function_t format_vlib_buffer_and_data

Definition at line 525 of file buffer_funcs.h.

format_function_t format_vlib_buffer_contents

Definition at line 525 of file buffer_funcs.h.

void* vlib_buffer_state_heap

Definition at line 674 of file buffer_funcs.h.

uword* vlib_buffer_state_validation_hash

Definition at line 673 of file buffer_funcs.h.

u32* vlib_buffer_state_validation_lock

Definition at line 672 of file buffer_funcs.h.