DPDK
22.11.6
|
#include <stdio.h>
#include <stdint.h>
#include <inttypes.h>
#include <rte_compat.h>
#include <rte_config.h>
#include <rte_spinlock.h>
#include <rte_debug.h>
#include <rte_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_ring.h>
#include <rte_memcpy.h>
#include <rte_common.h>
#include "rte_mempool_trace_fp.h"
Go to the source code of this file.
Data Structures | |
struct | rte_mempool_cache |
struct | rte_mempool_objsz |
struct | rte_mempool_objhdr |
struct | rte_mempool_memhdr |
struct | rte_mempool_info |
struct | rte_mempool |
struct | rte_mempool_ops |
struct | rte_mempool_ops_table |
Macros | |
#define | RTE_MEMPOOL_HEADER_COOKIE1 0xbadbadbadadd2e55ULL |
#define | RTE_MEMPOOL_HEADER_COOKIE2 0xf2eef2eedadd2e55ULL |
#define | RTE_MEMPOOL_TRAILER_COOKIE 0xadd2e55badbadbadULL |
#define | RTE_MEMPOOL_ALIGN RTE_CACHE_LINE_SIZE |
#define | RTE_MEMPOOL_F_NO_SPREAD 0x0001 |
#define | MEMPOOL_F_NO_SPREAD RTE_MEMPOOL_F_NO_SPREAD |
#define | RTE_MEMPOOL_F_NO_CACHE_ALIGN 0x0002 |
#define | MEMPOOL_F_NO_CACHE_ALIGN RTE_MEMPOOL_F_NO_CACHE_ALIGN |
#define | RTE_MEMPOOL_F_SP_PUT 0x0004 |
#define | MEMPOOL_F_SP_PUT RTE_MEMPOOL_F_SP_PUT |
#define | RTE_MEMPOOL_F_SC_GET 0x0008 |
#define | MEMPOOL_F_SC_GET RTE_MEMPOOL_F_SC_GET |
#define | RTE_MEMPOOL_F_POOL_CREATED 0x0010 |
#define | RTE_MEMPOOL_F_NO_IOVA_CONTIG 0x0020 |
#define | MEMPOOL_F_NO_IOVA_CONTIG RTE_MEMPOOL_F_NO_IOVA_CONTIG |
#define | RTE_MEMPOOL_F_NON_IO 0x0040 |
#define | RTE_MEMPOOL_VALID_USER_FLAGS |
#define | RTE_MEMPOOL_OPS_NAMESIZE 32 |
#define | RTE_MEMPOOL_POPULATE_F_ALIGN_OBJ 0x0001 |
#define | RTE_MEMPOOL_MAX_OPS_IDX 16 |
#define | RTE_MEMPOOL_REGISTER_OPS(ops) |
Typedefs | |
typedef void() | rte_mempool_memchunk_free_cb_t(struct rte_mempool_memhdr *memhdr, void *opaque) |
typedef int(* | rte_mempool_alloc_t) (struct rte_mempool *mp) |
typedef void(* | rte_mempool_free_t) (struct rte_mempool *mp) |
typedef int(* | rte_mempool_enqueue_t) (struct rte_mempool *mp, void *const *obj_table, unsigned int n) |
typedef int(* | rte_mempool_dequeue_t) (struct rte_mempool *mp, void **obj_table, unsigned int n) |
typedef int(* | rte_mempool_dequeue_contig_blocks_t) (struct rte_mempool *mp, void **first_obj_table, unsigned int n) |
typedef unsigned(* | rte_mempool_get_count) (const struct rte_mempool *mp) |
typedef ssize_t(* | rte_mempool_calc_mem_size_t) (const struct rte_mempool *mp, uint32_t obj_num, uint32_t pg_shift, size_t *min_chunk_size, size_t *align) |
typedef void() | rte_mempool_populate_obj_cb_t(struct rte_mempool *mp, void *opaque, void *vaddr, rte_iova_t iova) |
typedef int(* | rte_mempool_populate_t) (struct rte_mempool *mp, unsigned int max_objs, void *vaddr, rte_iova_t iova, size_t len, rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg) |
typedef int(* | rte_mempool_get_info_t) (const struct rte_mempool *mp, struct rte_mempool_info *info) |
typedef void() | rte_mempool_obj_cb_t(struct rte_mempool *mp, void *opaque, void *obj, unsigned obj_idx) |
typedef void() | rte_mempool_mem_cb_t(struct rte_mempool *mp, void *opaque, struct rte_mempool_memhdr *memhdr, unsigned mem_idx) |
typedef void() | rte_mempool_ctor_t(struct rte_mempool *, void *) |
Enumerations | |
enum | rte_mempool_event { RTE_MEMPOOL_EVENT_READY = 0, RTE_MEMPOOL_EVENT_DESTROY = 1 } |
Functions | |
RTE_STAILQ_HEAD (rte_mempool_objhdr_list, rte_mempool_objhdr) | |
RTE_STAILQ_HEAD (rte_mempool_memhdr_list, rte_mempool_memhdr) | |
static struct rte_mempool * | rte_mempool_from_obj (void *obj) |
ssize_t | rte_mempool_op_calc_mem_size_default (const struct rte_mempool *mp, uint32_t obj_num, uint32_t pg_shift, size_t *min_chunk_size, size_t *align) |
int | rte_mempool_op_populate_default (struct rte_mempool *mp, unsigned int max_objs, void *vaddr, rte_iova_t iova, size_t len, rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg) |
int | rte_mempool_ops_get_info (const struct rte_mempool *mp, struct rte_mempool_info *info) |
int | rte_mempool_set_ops_byname (struct rte_mempool *mp, const char *name, void *pool_config) |
int | rte_mempool_register_ops (const struct rte_mempool_ops *ops) |
struct rte_mempool * | rte_mempool_create (const char *name, unsigned n, unsigned elt_size, unsigned cache_size, unsigned private_data_size, rte_mempool_ctor_t *mp_init, void *mp_init_arg, rte_mempool_obj_cb_t *obj_init, void *obj_init_arg, int socket_id, unsigned flags) |
struct rte_mempool * | rte_mempool_create_empty (const char *name, unsigned n, unsigned elt_size, unsigned cache_size, unsigned private_data_size, int socket_id, unsigned flags) |
void | rte_mempool_free (struct rte_mempool *mp) |
int | rte_mempool_populate_iova (struct rte_mempool *mp, char *vaddr, rte_iova_t iova, size_t len, rte_mempool_memchunk_free_cb_t *free_cb, void *opaque) |
int | rte_mempool_populate_virt (struct rte_mempool *mp, char *addr, size_t len, size_t pg_sz, rte_mempool_memchunk_free_cb_t *free_cb, void *opaque) |
int | rte_mempool_populate_default (struct rte_mempool *mp) |
int | rte_mempool_populate_anon (struct rte_mempool *mp) |
uint32_t | rte_mempool_obj_iter (struct rte_mempool *mp, rte_mempool_obj_cb_t *obj_cb, void *obj_cb_arg) |
uint32_t | rte_mempool_mem_iter (struct rte_mempool *mp, rte_mempool_mem_cb_t *mem_cb, void *mem_cb_arg) |
void | rte_mempool_dump (FILE *f, struct rte_mempool *mp) |
struct rte_mempool_cache * | rte_mempool_cache_create (uint32_t size, int socket_id) |
void | rte_mempool_cache_free (struct rte_mempool_cache *cache) |
static __rte_always_inline struct rte_mempool_cache * | rte_mempool_default_cache (struct rte_mempool *mp, unsigned lcore_id) |
static __rte_always_inline void | rte_mempool_cache_flush (struct rte_mempool_cache *cache, struct rte_mempool *mp) |
static __rte_always_inline void | rte_mempool_generic_put (struct rte_mempool *mp, void *const *obj_table, unsigned int n, struct rte_mempool_cache *cache) |
static __rte_always_inline void | rte_mempool_put_bulk (struct rte_mempool *mp, void *const *obj_table, unsigned int n) |
static __rte_always_inline void | rte_mempool_put (struct rte_mempool *mp, void *obj) |
static __rte_always_inline int | rte_mempool_generic_get (struct rte_mempool *mp, void **obj_table, unsigned int n, struct rte_mempool_cache *cache) |
static __rte_always_inline int | rte_mempool_get_bulk (struct rte_mempool *mp, void **obj_table, unsigned int n) |
static __rte_always_inline int | rte_mempool_get (struct rte_mempool *mp, void **obj_p) |
static __rte_always_inline int | rte_mempool_get_contig_blocks (struct rte_mempool *mp, void **first_obj_table, unsigned int n) |
unsigned int | rte_mempool_avail_count (const struct rte_mempool *mp) |
unsigned int | rte_mempool_in_use_count (const struct rte_mempool *mp) |
static int | rte_mempool_full (const struct rte_mempool *mp) |
static int | rte_mempool_empty (const struct rte_mempool *mp) |
static rte_iova_t | rte_mempool_virt2iova (const void *elt) |
void | rte_mempool_audit (struct rte_mempool *mp) |
static void * | rte_mempool_get_priv (struct rte_mempool *mp) |
void | rte_mempool_list_dump (FILE *f) |
struct rte_mempool * | rte_mempool_lookup (const char *name) |
uint32_t | rte_mempool_calc_obj_size (uint32_t elt_size, uint32_t flags, struct rte_mempool_objsz *sz) |
void | rte_mempool_walk (void(*func)(struct rte_mempool *, void *arg), void *arg) |
Variables | |
struct rte_mempool_ops_table | rte_mempool_ops_table |
RTE Mempool.
A memory pool is an allocator of fixed-size object. It is identified by its name, and uses a ring to store free objects. It provides some other optional services, like a per-core object cache, and an alignment helper to ensure that objects are padded to spread them equally on all RAM channels, ranks, and so on.
Objects owned by a mempool should never be added in another mempool. When an object is freed using rte_mempool_put() or equivalent, the object data is not modified; the user can save some meta-data in the object data and retrieve them when allocating a new object.
Note: the mempool implementation is not preemptible. An lcore must not be interrupted by another task that uses the same mempool (because it uses a ring which is not preemptible). Also, usual mempool functions like rte_mempool_get() or rte_mempool_put() are designed to be called from an EAL thread due to the internal per-lcore cache. Due to the lack of caching, rte_mempool_get() or rte_mempool_put() performance will suffer when called by unregistered non-EAL threads. Instead, unregistered non-EAL threads should call rte_mempool_generic_get() or rte_mempool_generic_put() with a user cache created with rte_mempool_cache_create().
Definition in file rte_mempool.h.
#define RTE_MEMPOOL_HEADER_COOKIE1 0xbadbadbadadd2e55ULL |
Header cookie.
Definition at line 57 of file rte_mempool.h.
#define RTE_MEMPOOL_HEADER_COOKIE2 0xf2eef2eedadd2e55ULL |
Header cookie.
Definition at line 58 of file rte_mempool.h.
#define RTE_MEMPOOL_TRAILER_COOKIE 0xadd2e55badbadbadULL |
Trailer cookie.
Definition at line 59 of file rte_mempool.h.
#define RTE_MEMPOOL_ALIGN RTE_CACHE_LINE_SIZE |
Alignment of elements inside mempool.
Definition at line 136 of file rte_mempool.h.
#define RTE_MEMPOOL_F_NO_SPREAD 0x0001 |
Spreading among memory channels not required.
Definition at line 265 of file rte_mempool.h.
#define MEMPOOL_F_NO_SPREAD RTE_MEMPOOL_F_NO_SPREAD |
Backward compatibility synonym for RTE_MEMPOOL_F_NO_SPREAD. To be deprecated.
Definition at line 270 of file rte_mempool.h.
#define RTE_MEMPOOL_F_NO_CACHE_ALIGN 0x0002 |
Do not align objects on cache lines.
Definition at line 272 of file rte_mempool.h.
#define MEMPOOL_F_NO_CACHE_ALIGN RTE_MEMPOOL_F_NO_CACHE_ALIGN |
Backward compatibility synonym for RTE_MEMPOOL_F_NO_CACHE_ALIGN. To be deprecated.
Definition at line 277 of file rte_mempool.h.
#define RTE_MEMPOOL_F_SP_PUT 0x0004 |
Default put is "single-producer".
Definition at line 279 of file rte_mempool.h.
#define MEMPOOL_F_SP_PUT RTE_MEMPOOL_F_SP_PUT |
Backward compatibility synonym for RTE_MEMPOOL_F_SP_PUT. To be deprecated.
Definition at line 284 of file rte_mempool.h.
#define RTE_MEMPOOL_F_SC_GET 0x0008 |
Default get is "single-consumer".
Definition at line 286 of file rte_mempool.h.
#define MEMPOOL_F_SC_GET RTE_MEMPOOL_F_SC_GET |
Backward compatibility synonym for RTE_MEMPOOL_F_SC_GET. To be deprecated.
Definition at line 291 of file rte_mempool.h.
#define RTE_MEMPOOL_F_POOL_CREATED 0x0010 |
Internal: pool is created.
Definition at line 293 of file rte_mempool.h.
#define RTE_MEMPOOL_F_NO_IOVA_CONTIG 0x0020 |
Don't need IOVA contiguous objects.
Definition at line 295 of file rte_mempool.h.
#define MEMPOOL_F_NO_IOVA_CONTIG RTE_MEMPOOL_F_NO_IOVA_CONTIG |
Backward compatibility synonym for RTE_MEMPOOL_F_NO_IOVA_CONTIG. To be deprecated.
Definition at line 300 of file rte_mempool.h.
#define RTE_MEMPOOL_F_NON_IO 0x0040 |
Internal: no object from the pool can be used for device IO (DMA).
Definition at line 302 of file rte_mempool.h.
#define RTE_MEMPOOL_VALID_USER_FLAGS |
This macro lists all the mempool flags an application may request.
Definition at line 307 of file rte_mempool.h.
#define RTE_MEMPOOL_OPS_NAMESIZE 32 |
Max length of ops struct name.
Definition at line 448 of file rte_mempool.h.
#define RTE_MEMPOOL_POPULATE_F_ALIGN_OBJ 0x0001 |
Align objects on addresses multiple of total_elt_sz.
Definition at line 624 of file rte_mempool.h.
#define RTE_MEMPOOL_MAX_OPS_IDX 16 |
Max registered ops structs
Definition at line 709 of file rte_mempool.h.
#define RTE_MEMPOOL_REGISTER_OPS | ( | ops | ) |
Macro to statically register the ops of a mempool handler. Note that the rte_mempool_register_ops fails silently here when more than RTE_MEMPOOL_MAX_OPS_IDX is registered.
Definition at line 973 of file rte_mempool.h.
typedef void() rte_mempool_memchunk_free_cb_t(struct rte_mempool_memhdr *memhdr, void *opaque) |
Callback used to free a memory chunk
Definition at line 186 of file rte_mempool.h.
typedef int(* rte_mempool_alloc_t) (struct rte_mempool *mp) |
Prototype for implementation specific data provisioning function.
The function should provide the implementation specific memory for use by the other mempool ops functions in a given mempool ops struct. E.g. the default ops provides an instance of the rte_ring for this purpose. it will most likely point to a different type of data structure, and will be transparent to the application programmer. This function should set mp->pool_data.
Definition at line 460 of file rte_mempool.h.
typedef void(* rte_mempool_free_t) (struct rte_mempool *mp) |
Free the opaque private data pointed to by mp->pool_data pointer.
Definition at line 465 of file rte_mempool.h.
typedef int(* rte_mempool_enqueue_t) (struct rte_mempool *mp, void *const *obj_table, unsigned int n) |
Enqueue 'n' objects into the external pool.
Definition at line 473 of file rte_mempool.h.
typedef int(* rte_mempool_dequeue_t) (struct rte_mempool *mp, void **obj_table, unsigned int n) |
Dequeue 'n' objects from the external pool.
Definition at line 482 of file rte_mempool.h.
typedef int(* rte_mempool_dequeue_contig_blocks_t) (struct rte_mempool *mp, void **first_obj_table, unsigned int n) |
Dequeue a number of contiguous object blocks from the external pool.
Definition at line 488 of file rte_mempool.h.
typedef unsigned(* rte_mempool_get_count) (const struct rte_mempool *mp) |
Return the number of available objects in the external pool.
Definition at line 494 of file rte_mempool.h.
typedef ssize_t(* rte_mempool_calc_mem_size_t) (const struct rte_mempool *mp, uint32_t obj_num, uint32_t pg_shift, size_t *min_chunk_size, size_t *align) |
Calculate memory size required to store given number of objects.
If mempool objects are not required to be IOVA-contiguous (the flag RTE_MEMPOOL_F_NO_IOVA_CONTIG is set), min_chunk_size defines virtually contiguous chunk size. Otherwise, if mempool objects must be IOVA-contiguous (the flag RTE_MEMPOOL_F_NO_IOVA_CONTIG is clear), min_chunk_size defines IOVA-contiguous chunk size.
[in] | mp | Pointer to the memory pool. |
[in] | obj_num | Number of objects. |
[in] | pg_shift | LOG2 of the physical pages size. If set to 0, ignore page boundaries. |
[out] | min_chunk_size | Location for minimum size of the memory chunk which may be used to store memory pool objects. |
[out] | align | Location for required memory chunk alignment. |
Definition at line 519 of file rte_mempool.h.
typedef void() rte_mempool_populate_obj_cb_t(struct rte_mempool *mp, void *opaque, void *vaddr, rte_iova_t iova) |
Function to be called for each populated object.
[in] | mp | A pointer to the mempool structure. |
[in] | opaque | An opaque pointer passed to iterator. |
[in] | vaddr | Object virtual address. |
[in] | iova | Input/output virtual address of the object or RTE_BAD_IOVA. |
Definition at line 585 of file rte_mempool.h.
typedef int(* rte_mempool_populate_t) (struct rte_mempool *mp, unsigned int max_objs, void *vaddr, rte_iova_t iova, size_t len, rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg) |
Populate memory pool objects using provided memory chunk.
Populated objects should be enqueued to the pool, e.g. using rte_mempool_ops_enqueue_bulk().
If the given IO address is unknown (iova = RTE_BAD_IOVA), the chunk doesn't need to be physically contiguous (only virtually), and allocated objects may span two pages.
[in] | mp | A pointer to the mempool structure. |
[in] | max_objs | Maximum number of objects to be populated. |
[in] | vaddr | The virtual address of memory that should be used to store objects. |
[in] | iova | The IO address |
[in] | len | The length of memory in bytes. |
[in] | obj_cb | Callback function to be executed for each populated object. |
[in] | obj_cb_arg | An opaque pointer passed to the callback function. |
Definition at line 616 of file rte_mempool.h.
typedef int(* rte_mempool_get_info_t) (const struct rte_mempool *mp, struct rte_mempool_info *info) |
Get some additional information about a mempool.
Definition at line 677 of file rte_mempool.h.
typedef void() rte_mempool_obj_cb_t(struct rte_mempool *mp, void *opaque, void *obj, unsigned obj_idx) |
An object callback function for mempool.
Used by rte_mempool_create() and rte_mempool_obj_iter().
Definition at line 984 of file rte_mempool.h.
typedef void() rte_mempool_mem_cb_t(struct rte_mempool *mp, void *opaque, struct rte_mempool_memhdr *memhdr, unsigned mem_idx) |
A memory callback function for mempool.
Used by rte_mempool_mem_iter().
Definition at line 993 of file rte_mempool.h.
typedef void() rte_mempool_ctor_t(struct rte_mempool *, void *) |
A mempool constructor callback function.
Arguments are the mempool and the opaque pointer given by the user in rte_mempool_create().
Definition at line 1003 of file rte_mempool.h.
enum rte_mempool_event |
Mempool event type.
Enumerator | |
---|---|
RTE_MEMPOOL_EVENT_READY | Occurs after a mempool is fully populated. |
RTE_MEMPOOL_EVENT_DESTROY | Occurs before the destruction of a mempool begins. |
Definition at line 1892 of file rte_mempool.h.
RTE_STAILQ_HEAD | ( | rte_mempool_objhdr_list | , |
rte_mempool_objhdr | |||
) |
A list of object headers type
RTE_STAILQ_HEAD | ( | rte_mempool_memhdr_list | , |
rte_mempool_memhdr | |||
) |
A list of memory where objects are stored
|
static |
Return a pointer to the mempool owning this object.
obj | An object that is owned by a pool. If this is not the case, the behavior is undefined. |
Definition at line 382 of file rte_mempool.h.
ssize_t rte_mempool_op_calc_mem_size_default | ( | const struct rte_mempool * | mp, |
uint32_t | obj_num, | ||
uint32_t | pg_shift, | ||
size_t * | min_chunk_size, | ||
size_t * | align | ||
) |
Default way to calculate memory size required to store given number of objects.
Equivalent to rte_mempool_op_calc_mem_size_helper(mp, obj_num, pg_shift, 0, min_chunk_size, align).
int rte_mempool_op_populate_default | ( | struct rte_mempool * | mp, |
unsigned int | max_objs, | ||
void * | vaddr, | ||
rte_iova_t | iova, | ||
size_t | len, | ||
rte_mempool_populate_obj_cb_t * | obj_cb, | ||
void * | obj_cb_arg | ||
) |
Default way to populate memory pool object using provided memory chunk.
Equivalent to rte_mempool_op_populate_helper(mp, 0, max_objs, vaddr, iova, len, obj_cb, obj_cb_arg).
int rte_mempool_ops_get_info | ( | const struct rte_mempool * | mp, |
struct rte_mempool_info * | info | ||
) |
Wrapper for mempool_ops get_info callback.
[in] | mp | Pointer to the memory pool. |
[out] | info | Pointer to the rte_mempool_info structure |
int rte_mempool_set_ops_byname | ( | struct rte_mempool * | mp, |
const char * | name, | ||
void * | pool_config | ||
) |
Set the ops of a mempool.
This can only be done on a mempool that is not populated, i.e. just after a call to rte_mempool_create_empty().
mp | Pointer to the memory pool. |
name | Name of the ops structure to use for this mempool. |
pool_config | Opaque data that can be passed by the application to the ops functions. |
int rte_mempool_register_ops | ( | const struct rte_mempool_ops * | ops | ) |
Register mempool operations.
ops | Pointer to an ops structure to register. |
struct rte_mempool* rte_mempool_create | ( | const char * | name, |
unsigned | n, | ||
unsigned | elt_size, | ||
unsigned | cache_size, | ||
unsigned | private_data_size, | ||
rte_mempool_ctor_t * | mp_init, | ||
void * | mp_init_arg, | ||
rte_mempool_obj_cb_t * | obj_init, | ||
void * | obj_init_arg, | ||
int | socket_id, | ||
unsigned | flags | ||
) |
Create a new mempool named name in memory.
This function uses rte_memzone_reserve()
to allocate memory. The pool contains n elements of elt_size. Its size is set to n.
name | The name of the mempool. |
n | The number of elements in the mempool. The optimum size (in terms of memory usage) for a mempool is when n is a power of two minus one: n = (2^q - 1). |
elt_size | The size of each element. |
cache_size | If cache_size is non-zero, the rte_mempool library will try to limit the accesses to the common lockless pool, by maintaining a per-lcore object cache. This argument must be lower or equal to RTE_MEMPOOL_CACHE_MAX_SIZE and n / 1.5. It is advised to choose cache_size to have "n modulo cache_size == 0": if this is not the case, some elements will always stay in the pool and will never be used. The access to the per-lcore table is of course faster than the multi-producer/consumer pool. The cache can be disabled if the cache_size argument is set to 0; it can be useful to avoid losing objects in cache. |
private_data_size | The size of the private data appended after the mempool structure. This is useful for storing some private data after the mempool structure, as is done for rte_mbuf_pool for example. |
mp_init | A function pointer that is called for initialization of the pool, before object initialization. The user can initialize the private data in this function if needed. This parameter can be NULL if not needed. |
mp_init_arg | An opaque pointer to data that can be used in the mempool constructor function. |
obj_init | A function pointer that is called for each object at initialization of the pool. The user can set some meta data in objects if needed. This parameter can be NULL if not needed. The obj_init() function takes the mempool pointer, the init_arg, the object pointer and the object number as parameters. |
obj_init_arg | An opaque pointer to data that can be used as an argument for each call to the object constructor function. |
socket_id | The socket_id argument is the socket identifier in the case of NUMA. The value can be SOCKET_ID_ANY if there is no NUMA constraint for the reserved zone. |
flags | The flags arguments is an OR of following flags:
|
struct rte_mempool* rte_mempool_create_empty | ( | const char * | name, |
unsigned | n, | ||
unsigned | elt_size, | ||
unsigned | cache_size, | ||
unsigned | private_data_size, | ||
int | socket_id, | ||
unsigned | flags | ||
) |
Create an empty mempool
The mempool is allocated and initialized, but it is not populated: no memory is allocated for the mempool elements. The user has to call rte_mempool_populate_*() to add memory chunks to the pool. Once populated, the user may also want to initialize each object with rte_mempool_obj_iter().
name | The name of the mempool. |
n | The maximum number of elements that can be added in the mempool. The optimum size (in terms of memory usage) for a mempool is when n is a power of two minus one: n = (2^q - 1). |
elt_size | The size of each element. |
cache_size | Size of the cache. See rte_mempool_create() for details. |
private_data_size | The size of the private data appended after the mempool structure. This is useful for storing some private data after the mempool structure, as is done for rte_mbuf_pool for example. |
socket_id | The socket_id argument is the socket identifier in the case of NUMA. The value can be SOCKET_ID_ANY if there is no NUMA constraint for the reserved zone. |
flags | Flags controlling the behavior of the mempool. See rte_mempool_create() for details. |
void rte_mempool_free | ( | struct rte_mempool * | mp | ) |
Free a mempool
Unlink the mempool from global list, free the memory chunks, and all memory referenced by the mempool. The objects must not be used by other cores as they will be freed.
mp | A pointer to the mempool structure. If NULL then, the function does nothing. |
int rte_mempool_populate_iova | ( | struct rte_mempool * | mp, |
char * | vaddr, | ||
rte_iova_t | iova, | ||
size_t | len, | ||
rte_mempool_memchunk_free_cb_t * | free_cb, | ||
void * | opaque | ||
) |
Add physically contiguous memory for objects in the pool at init
Add a virtually and physically contiguous memory chunk in the pool where objects can be instantiated.
If the given IO address is unknown (iova = RTE_BAD_IOVA), the chunk doesn't need to be physically contiguous (only virtually), and allocated objects may span two pages.
mp | A pointer to the mempool structure. |
vaddr | The virtual address of memory that should be used to store objects. |
iova | The IO address |
len | The length of memory in bytes. |
free_cb | The callback used to free this chunk when destroying the mempool. |
opaque | An opaque argument passed to free_cb. |
int rte_mempool_populate_virt | ( | struct rte_mempool * | mp, |
char * | addr, | ||
size_t | len, | ||
size_t | pg_sz, | ||
rte_mempool_memchunk_free_cb_t * | free_cb, | ||
void * | opaque | ||
) |
Add virtually contiguous memory for objects in the pool at init
Add a virtually contiguous memory chunk in the pool where objects can be instantiated.
mp | A pointer to the mempool structure. |
addr | The virtual address of memory that should be used to store objects. |
len | The length of memory in bytes. |
pg_sz | The size of memory pages in this virtual area. |
free_cb | The callback used to free this chunk when destroying the mempool. |
opaque | An opaque argument passed to free_cb. |
int rte_mempool_populate_default | ( | struct rte_mempool * | mp | ) |
Add memory for objects in the pool at init
This is the default function used by rte_mempool_create() to populate the mempool. It adds memory allocated using rte_memzone_reserve().
mp | A pointer to the mempool structure. |
int rte_mempool_populate_anon | ( | struct rte_mempool * | mp | ) |
Add memory from anonymous mapping for objects in the pool at init
This function mmap an anonymous memory zone that is locked in memory to store the objects of the mempool.
mp | A pointer to the mempool structure. |
uint32_t rte_mempool_obj_iter | ( | struct rte_mempool * | mp, |
rte_mempool_obj_cb_t * | obj_cb, | ||
void * | obj_cb_arg | ||
) |
Call a function for each mempool element
Iterate across all objects attached to a rte_mempool and call the callback function on it.
mp | A pointer to an initialized mempool. |
obj_cb | A function pointer that is called for each object. |
obj_cb_arg | An opaque pointer passed to the callback function. |
uint32_t rte_mempool_mem_iter | ( | struct rte_mempool * | mp, |
rte_mempool_mem_cb_t * | mem_cb, | ||
void * | mem_cb_arg | ||
) |
Call a function for each mempool memory chunk
Iterate across all memory chunks attached to a rte_mempool and call the callback function on it.
mp | A pointer to an initialized mempool. |
mem_cb | A function pointer that is called for each memory chunk. |
mem_cb_arg | An opaque pointer passed to the callback function. |
void rte_mempool_dump | ( | FILE * | f, |
struct rte_mempool * | mp | ||
) |
Dump the status of the mempool to a file.
f | A pointer to a file for output |
mp | A pointer to the mempool structure. |
struct rte_mempool_cache* rte_mempool_cache_create | ( | uint32_t | size, |
int | socket_id | ||
) |
Create a user-owned mempool cache.
This can be used by unregistered non-EAL threads to enable caching when they interact with a mempool.
size | The size of the mempool cache. See rte_mempool_create()'s cache_size parameter description for more information. The same limits and considerations apply here too. |
socket_id | The socket identifier in the case of NUMA. The value can be SOCKET_ID_ANY if there is no NUMA constraint for the reserved zone. |
void rte_mempool_cache_free | ( | struct rte_mempool_cache * | cache | ) |
Free a user-owned mempool cache.
cache | A pointer to the mempool cache. |
|
static |
Get a pointer to the per-lcore default mempool cache.
mp | A pointer to the mempool structure. |
lcore_id | The logical core id. |
Definition at line 1321 of file rte_mempool.h.
|
static |
Flush a user-owned mempool cache to the specified mempool.
cache | A pointer to the mempool cache. |
mp | A pointer to the mempool. |
Definition at line 1343 of file rte_mempool.h.
|
static |
Put several objects back in the mempool.
mp | A pointer to the mempool structure. |
obj_table | A pointer to a table of void * pointers (objects). |
n | The number of objects to add in the mempool from the obj_table. |
cache | A pointer to a mempool cache structure. May be NULL if not needed. |
Definition at line 1432 of file rte_mempool.h.
|
static |
Put several objects back in the mempool.
This function calls the multi-producer or the single-producer version depending on the default behavior that was specified at mempool creation time (see flags).
mp | A pointer to the mempool structure. |
obj_table | A pointer to a table of void * pointers (objects). |
n | The number of objects to add in the mempool from obj_table. |
Definition at line 1455 of file rte_mempool.h.
|
static |
Put one object back in the mempool.
This function calls the multi-producer or the single-producer version depending on the default behavior that was specified at mempool creation time (see flags).
mp | A pointer to the mempool structure. |
obj | A pointer to the object to be added. |
Definition at line 1477 of file rte_mempool.h.
|
static |
Get several objects from the mempool.
If cache is enabled, objects will be retrieved first from cache, subsequently from the common pool. Note that it can return -ENOENT when the local cache and common pool are empty, even if cache from other lcores are full.
mp | A pointer to the mempool structure. |
obj_table | A pointer to a table of void * pointers (objects) that will be filled. |
n | The number of objects to get from mempool to obj_table. |
cache | A pointer to a mempool cache structure. May be NULL if not needed. |
Definition at line 1606 of file rte_mempool.h.
|
static |
Get several objects from the mempool.
This function calls the multi-consumers or the single-consumer version, depending on the default behaviour that was specified at mempool creation time (see flags).
If cache is enabled, objects will be retrieved first from cache, subsequently from the common pool. Note that it can return -ENOENT when the local cache and common pool are empty, even if cache from other lcores are full.
mp | A pointer to the mempool structure. |
obj_table | A pointer to a table of void * pointers (objects) that will be filled. |
n | The number of objects to get from the mempool to obj_table. |
Definition at line 1640 of file rte_mempool.h.
|
static |
Get one object from the mempool.
This function calls the multi-consumers or the single-consumer version, depending on the default behavior that was specified at mempool creation (see flags).
If cache is enabled, objects will be retrieved first from cache, subsequently from the common pool. Note that it can return -ENOENT when the local cache and common pool are empty, even if cache from other lcores are full.
mp | A pointer to the mempool structure. |
obj_p | A pointer to a void * pointer (object) that will be filled. |
Definition at line 1669 of file rte_mempool.h.
|
static |
Get a contiguous blocks of objects from the mempool.
If cache is enabled, consider to flush it first, to reuse objects as soon as possible.
The application should check that the driver supports the operation by calling rte_mempool_ops_get_info() and checking that contig_block_size
is not zero.
mp | A pointer to the mempool structure. |
first_obj_table | A pointer to a pointer to the first object in each block. |
n | The number of blocks to get from mempool. |
Definition at line 1696 of file rte_mempool.h.
unsigned int rte_mempool_avail_count | ( | const struct rte_mempool * | mp | ) |
Return the number of entries in the mempool.
When cache is enabled, this function has to browse the length of all lcores, so it should not be used in a data path, but only for debug purposes. User-owned mempool caches are not accounted for.
mp | A pointer to the mempool structure. |
unsigned int rte_mempool_in_use_count | ( | const struct rte_mempool * | mp | ) |
Return the number of elements which have been allocated from the mempool
When cache is enabled, this function has to browse the length of all lcores, so it should not be used in a data path, but only for debug purposes.
mp | A pointer to the mempool structure. |
|
inlinestatic |
Test if the mempool is full.
When cache is enabled, this function has to browse the length of all lcores, so it should not be used in a data path, but only for debug purposes. User-owned mempool caches are not accounted for.
mp | A pointer to the mempool structure. |
Definition at line 1759 of file rte_mempool.h.
|
inlinestatic |
Test if the mempool is empty.
When cache is enabled, this function has to browse the length of all lcores, so it should not be used in a data path, but only for debug purposes. User-owned mempool caches are not accounted for.
mp | A pointer to the mempool structure. |
Definition at line 1778 of file rte_mempool.h.
|
inlinestatic |
Return the IO address of elt, which is an element of the pool mp.
elt | A pointer (virtual address) to the element of the pool. |
Definition at line 1794 of file rte_mempool.h.
void rte_mempool_audit | ( | struct rte_mempool * | mp | ) |
Check the consistency of mempool objects.
Verify the coherency of fields in the mempool structure. Also check that the cookies of mempool objects (even the ones that are not present in pool) have a correct value. If not, a panic will occur.
mp | A pointer to the mempool structure. |
|
inlinestatic |
Return a pointer to the private data in an mempool structure.
mp | A pointer to the mempool structure. |
Definition at line 1822 of file rte_mempool.h.
void rte_mempool_list_dump | ( | FILE * | f | ) |
Dump the status of all mempools on the console
f | A pointer to a file for output |
struct rte_mempool* rte_mempool_lookup | ( | const char * | name | ) |
Search a mempool from its name
name | The name of the mempool. |
uint32_t rte_mempool_calc_obj_size | ( | uint32_t | elt_size, |
uint32_t | flags, | ||
struct rte_mempool_objsz * | sz | ||
) |
Get the header, trailer and total size of a mempool element.
Given a desired size of the mempool element and mempool flags, calculates header, trailer, body and total sizes of the mempool object.
elt_size | The size of each element, without header and trailer. |
flags | The flags used for the mempool creation. Consult rte_mempool_create() for more information about possible values. The size of each element. |
sz | The calculated detailed size the mempool object. May be NULL. |
void rte_mempool_walk | ( | void(*)(struct rte_mempool *, void *arg) | func, |
void * | arg | ||
) |
Walk list of all memory pools
func | Iterator function |
arg | Argument passed to iterator |
Array of registered ops structs.