X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_mempool%2Frte_mempool.h;h=440f3b1bac4b8f9eecca108acb375aaaec78f01f;hb=5d8f0baf69ea1462c8cc32729c789f7278bf3dc2;hp=0a1777c163933cc9369054f15f013939659037e0;hpb=449c49b93a6b87506c7bb07468e82b539efddca3;p=dpdk.git diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h index 0a1777c163..440f3b1bac 100644 --- a/lib/librte_mempool/rte_mempool.h +++ b/lib/librte_mempool/rte_mempool.h @@ -74,6 +74,8 @@ #include #include #include +#include +#include #ifdef __cplusplus extern "C" { @@ -101,7 +103,9 @@ struct rte_mempool_debug_stats { * A structure that stores a per-core object cache. */ struct rte_mempool_cache { - unsigned len; /**< Cache len */ + uint32_t size; /**< Size of the cache */ + uint32_t flushthresh; /**< Threshold before we flush excess elements */ + uint32_t len; /**< Current cache count */ /* * Cache is allocated to this size to allow it to overflow in certain * cases to avoid needless emptying of cache. @@ -120,7 +124,9 @@ struct rte_mempool_objsz { /**< Total size of an object (header + elt + trailer). */ }; -#define RTE_MEMPOOL_NAMESIZE 32 /**< Maximum length of a memory pool. */ +/**< Maximum length of a memory pool's name. */ +#define RTE_MEMPOOL_NAMESIZE (RTE_RING_NAMESIZE - \ + sizeof(RTE_MEMPOOL_MZ_PREFIX) + 1) #define RTE_MEMPOOL_MZ_PREFIX "MP_" /* "MP_" */ @@ -160,6 +166,8 @@ struct rte_mempool_objhdr { */ STAILQ_HEAD(rte_mempool_objhdr_list, rte_mempool_objhdr); +#ifdef RTE_LIBRTE_MEMPOOL_DEBUG + /** * Mempool object trailer structure * @@ -167,11 +175,11 @@ STAILQ_HEAD(rte_mempool_objhdr_list, rte_mempool_objhdr); * trailer structure containing a cookie preventing memory corruptions. */ struct rte_mempool_objtlr { -#ifdef RTE_LIBRTE_MEMPOOL_DEBUG uint64_t cookie; /**< Debug cookie. */ -#endif }; +#endif + /** * A list of memory where objects are stored */ @@ -203,7 +211,13 @@ struct rte_mempool_memhdr { * The RTE mempool structure. */ struct rte_mempool { - char name[RTE_MEMPOOL_NAMESIZE]; /**< Name of mempool. */ + /* + * Note: this field kept the RTE_MEMZONE_NAMESIZE size due to ABI + * compatibility requirements, it could be changed to + * RTE_MEMPOOL_NAMESIZE next time the ABI changes + */ + char name[RTE_MEMZONE_NAMESIZE]; /**< Name of mempool. */ + RTE_STD_C11 union { void *pool_data; /**< Ring or pool to store objects. */ uint64_t pool_id; /**< External mempool identifier. */ @@ -213,9 +227,8 @@ struct rte_mempool { int flags; /**< Flags of the mempool. */ int socket_id; /**< Socket id passed at create. */ uint32_t size; /**< Max size of the mempool. */ - uint32_t cache_size; /**< Size of per-lcore local cache. */ - uint32_t cache_flushthresh; - /**< Threshold before we flush excess elements. */ + uint32_t cache_size; + /**< Size of per-lcore default local cache. */ uint32_t elt_size; /**< Size of an element. */ uint32_t header_size; /**< Size of header (before elt). */ @@ -576,10 +589,8 @@ typedef void (rte_mempool_ctor_t)(struct rte_mempool *, void *); /** * Create a new mempool named *name* in memory. * - * This function uses ``memzone_reserve()`` to allocate memory. The + * This function uses ``rte_memzone_reserve()`` to allocate memory. The * pool contains n elements of elt_size. Its size is set to n. - * All elements of the mempool are allocated together with the mempool header, - * in one physically continuous chunk of memory. * * @param name * The name of the mempool. @@ -735,7 +746,7 @@ rte_mempool_xmem_create(const char *name, unsigned n, unsigned elt_size, * * 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_*() or to add memory chunks to the pool. Once + * 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(). * @@ -787,6 +798,10 @@ rte_mempool_free(struct rte_mempool *mp); * Add a virtually and physically contiguous memory chunk in the pool * where objects can be instanciated. * + * If the given physical address is unknown (paddr = RTE_BAD_PHYS_ADDR), + * the chunk doesn't need to be physically contiguous (only virtually), + * and allocated objects may span two pages. + * * @param mp * A pointer to the mempool structure. * @param vaddr @@ -935,7 +950,7 @@ uint32_t rte_mempool_mem_iter(struct rte_mempool *mp, rte_mempool_mem_cb_t *mem_cb, void *mem_cb_arg); /** - * Dump the status of the mempool to the console. + * Dump the status of the mempool to a file. * * @param f * A pointer to a file for output @@ -944,6 +959,70 @@ uint32_t rte_mempool_mem_iter(struct rte_mempool *mp, */ void rte_mempool_dump(FILE *f, struct rte_mempool *mp); +/** + * Create a user-owned mempool cache. + * + * This can be used by non-EAL threads to enable caching when they + * interact with a mempool. + * + * @param 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. + * @param 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. + */ +struct rte_mempool_cache * +rte_mempool_cache_create(uint32_t size, int socket_id); + +/** + * Free a user-owned mempool cache. + * + * @param cache + * A pointer to the mempool cache. + */ +void +rte_mempool_cache_free(struct rte_mempool_cache *cache); + +/** + * Flush a user-owned mempool cache to the specified mempool. + * + * @param cache + * A pointer to the mempool cache. + * @param mp + * A pointer to the mempool. + */ +static inline void __attribute__((always_inline)) +rte_mempool_cache_flush(struct rte_mempool_cache *cache, + struct rte_mempool *mp) +{ + rte_mempool_ops_enqueue_bulk(mp, cache->objs, cache->len); + cache->len = 0; +} + +/** + * Get a pointer to the per-lcore default mempool cache. + * + * @param mp + * A pointer to the mempool structure. + * @param lcore_id + * The logical core id. + * @return + * A pointer to the mempool cache or NULL if disabled or non-EAL thread. + */ +static inline struct rte_mempool_cache *__attribute__((always_inline)) +rte_mempool_default_cache(struct rte_mempool *mp, unsigned lcore_id) +{ + if (mp->cache_size == 0) + return NULL; + + if (lcore_id >= RTE_MAX_LCORE) + return NULL; + + return &mp->local_cache[lcore_id]; +} + /** * @internal Put several objects back in the mempool; used internally. * @param mp @@ -953,33 +1032,29 @@ void rte_mempool_dump(FILE *f, struct rte_mempool *mp); * @param n * The number of objects to store back in the mempool, must be strictly * positive. - * @param is_mp - * Mono-producer (0) or multi-producers (1). + * @param cache + * A pointer to a mempool cache structure. May be NULL if not needed. + * @param flags + * The flags used for the mempool creation. + * Single-producer (MEMPOOL_F_SP_PUT flag) or multi-producers. */ static inline void __attribute__((always_inline)) -__mempool_put_bulk(struct rte_mempool *mp, void * const *obj_table, - unsigned n, int is_mp) +__mempool_generic_put(struct rte_mempool *mp, void * const *obj_table, + unsigned n, struct rte_mempool_cache *cache, int flags) { - struct rte_mempool_cache *cache; - uint32_t index; void **cache_objs; - unsigned lcore_id = rte_lcore_id(); - uint32_t cache_size = mp->cache_size; - uint32_t flushthresh = mp->cache_flushthresh; /* increment stat now, adding in mempool always success */ __MEMPOOL_STAT_ADD(mp, put, n); - /* cache is not enabled or single producer or non-EAL thread */ - if (unlikely(cache_size == 0 || is_mp == 0 || - lcore_id >= RTE_MAX_LCORE)) + /* No cache provided or single producer */ + if (unlikely(cache == NULL || flags & MEMPOOL_F_SP_PUT)) goto ring_enqueue; /* Go straight to ring if put would overflow mem allocated for cache */ if (unlikely(n > RTE_MEMPOOL_CACHE_MAX_SIZE)) goto ring_enqueue; - cache = &mp->local_cache[lcore_id]; cache_objs = &cache->objs[cache->len]; /* @@ -990,15 +1065,14 @@ __mempool_put_bulk(struct rte_mempool *mp, void * const *obj_table, */ /* Add elements back into the cache */ - for (index = 0; index < n; ++index, obj_table++) - cache_objs[index] = *obj_table; + rte_memcpy(&cache_objs[0], obj_table, sizeof(void *) * n); cache->len += n; - if (cache->len >= flushthresh) { - rte_mempool_ops_enqueue_bulk(mp, &cache->objs[cache_size], - cache->len - cache_size); - cache->len = cache_size; + if (cache->len >= cache->flushthresh) { + rte_mempool_ops_enqueue_bulk(mp, &cache->objs[cache->size], + cache->len - cache->size); + cache->len = cache->size; } return; @@ -1016,6 +1090,30 @@ ring_enqueue: /** + * Put several objects back in the mempool. + * + * @param mp + * A pointer to the mempool structure. + * @param obj_table + * A pointer to a table of void * pointers (objects). + * @param n + * The number of objects to add in the mempool from the obj_table. + * @param cache + * A pointer to a mempool cache structure. May be NULL if not needed. + * @param flags + * The flags used for the mempool creation. + * Single-producer (MEMPOOL_F_SP_PUT flag) or multi-producers. + */ +static inline void __attribute__((always_inline)) +rte_mempool_generic_put(struct rte_mempool *mp, void * const *obj_table, + unsigned n, struct rte_mempool_cache *cache, int flags) +{ + __mempool_check_cookies(mp, obj_table, n, 0); + __mempool_generic_put(mp, obj_table, n, cache, flags); +} + +/** + * @deprecated * Put several objects back in the mempool (multi-producers safe). * * @param mp @@ -1025,15 +1123,18 @@ ring_enqueue: * @param n * The number of objects to add in the mempool from the obj_table. */ +__rte_deprecated static inline void __attribute__((always_inline)) rte_mempool_mp_put_bulk(struct rte_mempool *mp, void * const *obj_table, unsigned n) { - __mempool_check_cookies(mp, obj_table, n, 0); - __mempool_put_bulk(mp, obj_table, n, 1); + struct rte_mempool_cache *cache; + cache = rte_mempool_default_cache(mp, rte_lcore_id()); + rte_mempool_generic_put(mp, obj_table, n, cache, 0); } /** + * @deprecated * Put several objects back in the mempool (NOT multi-producers safe). * * @param mp @@ -1043,12 +1144,12 @@ rte_mempool_mp_put_bulk(struct rte_mempool *mp, void * const *obj_table, * @param n * The number of objects to add in the mempool from obj_table. */ -static inline void +__rte_deprecated +static inline void __attribute__((always_inline)) rte_mempool_sp_put_bulk(struct rte_mempool *mp, void * const *obj_table, unsigned n) { - __mempool_check_cookies(mp, obj_table, n, 0); - __mempool_put_bulk(mp, obj_table, n, 0); + rte_mempool_generic_put(mp, obj_table, n, NULL, MEMPOOL_F_SP_PUT); } /** @@ -1069,11 +1170,13 @@ static inline void __attribute__((always_inline)) rte_mempool_put_bulk(struct rte_mempool *mp, void * const *obj_table, unsigned n) { - __mempool_check_cookies(mp, obj_table, n, 0); - __mempool_put_bulk(mp, obj_table, n, !(mp->flags & MEMPOOL_F_SP_PUT)); + struct rte_mempool_cache *cache; + cache = rte_mempool_default_cache(mp, rte_lcore_id()); + rte_mempool_generic_put(mp, obj_table, n, cache, mp->flags); } /** + * @deprecated * Put one object in the mempool (multi-producers safe). * * @param mp @@ -1081,13 +1184,17 @@ rte_mempool_put_bulk(struct rte_mempool *mp, void * const *obj_table, * @param obj * A pointer to the object to be added. */ +__rte_deprecated static inline void __attribute__((always_inline)) rte_mempool_mp_put(struct rte_mempool *mp, void *obj) { - rte_mempool_mp_put_bulk(mp, &obj, 1); + struct rte_mempool_cache *cache; + cache = rte_mempool_default_cache(mp, rte_lcore_id()); + rte_mempool_generic_put(mp, &obj, 1, cache, 0); } /** + * @deprecated * Put one object back in the mempool (NOT multi-producers safe). * * @param mp @@ -1095,10 +1202,11 @@ rte_mempool_mp_put(struct rte_mempool *mp, void *obj) * @param obj * A pointer to the object to be added. */ +__rte_deprecated static inline void __attribute__((always_inline)) rte_mempool_sp_put(struct rte_mempool *mp, void *obj) { - rte_mempool_sp_put_bulk(mp, &obj, 1); + rte_mempool_generic_put(mp, &obj, 1, NULL, MEMPOOL_F_SP_PUT); } /** @@ -1127,35 +1235,34 @@ rte_mempool_put(struct rte_mempool *mp, void *obj) * A pointer to a table of void * pointers (objects). * @param n * The number of objects to get, must be strictly positive. - * @param is_mc - * Mono-consumer (0) or multi-consumers (1). + * @param cache + * A pointer to a mempool cache structure. May be NULL if not needed. + * @param flags + * The flags used for the mempool creation. + * Single-consumer (MEMPOOL_F_SC_GET flag) or multi-consumers. * @return * - >=0: Success; number of objects supplied. * - <0: Error; code of ring dequeue function. */ static inline int __attribute__((always_inline)) -__mempool_get_bulk(struct rte_mempool *mp, void **obj_table, - unsigned n, int is_mc) +__mempool_generic_get(struct rte_mempool *mp, void **obj_table, + unsigned n, struct rte_mempool_cache *cache, int flags) { int ret; - struct rte_mempool_cache *cache; uint32_t index, len; void **cache_objs; - unsigned lcore_id = rte_lcore_id(); - uint32_t cache_size = mp->cache_size; - /* cache is not enabled or single consumer */ - if (unlikely(cache_size == 0 || is_mc == 0 || - n >= cache_size || lcore_id >= RTE_MAX_LCORE)) + /* No cache provided or single consumer */ + if (unlikely(cache == NULL || flags & MEMPOOL_F_SC_GET || + n >= cache->size)) goto ring_dequeue; - cache = &mp->local_cache[lcore_id]; cache_objs = cache->objs; /* Can this be satisfied from the cache? */ if (cache->len < n) { /* No. Backfill the cache first, and then fill from it */ - uint32_t req = n + (cache_size - cache->len); + uint32_t req = n + (cache->size - cache->len); /* How many do we require i.e. number to fill the cache + the request */ ret = rte_mempool_ops_dequeue_bulk(mp, @@ -1197,7 +1304,7 @@ ring_dequeue: } /** - * Get several objects from the mempool (multi-consumers safe). + * 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 @@ -1210,21 +1317,56 @@ ring_dequeue: * A pointer to a table of void * pointers (objects) that will be filled. * @param n * The number of objects to get from mempool to obj_table. + * @param cache + * A pointer to a mempool cache structure. May be NULL if not needed. + * @param flags + * The flags used for the mempool creation. + * Single-consumer (MEMPOOL_F_SC_GET flag) or multi-consumers. * @return * - 0: Success; objects taken. * - -ENOENT: Not enough entries in the mempool; no object is retrieved. */ static inline int __attribute__((always_inline)) -rte_mempool_mc_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n) +rte_mempool_generic_get(struct rte_mempool *mp, void **obj_table, unsigned n, + struct rte_mempool_cache *cache, int flags) { int ret; - ret = __mempool_get_bulk(mp, obj_table, n, 1); + ret = __mempool_generic_get(mp, obj_table, n, cache, flags); if (ret == 0) __mempool_check_cookies(mp, obj_table, n, 1); return ret; } /** + * @deprecated + * Get several objects from the mempool (multi-consumers safe). + * + * 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. + * + * @param mp + * A pointer to the mempool structure. + * @param obj_table + * A pointer to a table of void * pointers (objects) that will be filled. + * @param n + * The number of objects to get from mempool to obj_table. + * @return + * - 0: Success; objects taken. + * - -ENOENT: Not enough entries in the mempool; no object is retrieved. + */ +__rte_deprecated +static inline int __attribute__((always_inline)) +rte_mempool_mc_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n) +{ + struct rte_mempool_cache *cache; + cache = rte_mempool_default_cache(mp, rte_lcore_id()); + return rte_mempool_generic_get(mp, obj_table, n, cache, 0); +} + +/** + * @deprecated * Get several objects from the mempool (NOT multi-consumers safe). * * If cache is enabled, objects will be retrieved first from cache, @@ -1243,14 +1385,12 @@ rte_mempool_mc_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n) * - -ENOENT: Not enough entries in the mempool; no object is * retrieved. */ +__rte_deprecated static inline int __attribute__((always_inline)) rte_mempool_sc_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n) { - int ret; - ret = __mempool_get_bulk(mp, obj_table, n, 0); - if (ret == 0) - __mempool_check_cookies(mp, obj_table, n, 1); - return ret; + return rte_mempool_generic_get(mp, obj_table, n, NULL, + MEMPOOL_F_SC_GET); } /** @@ -1278,15 +1418,13 @@ rte_mempool_sc_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n) static inline int __attribute__((always_inline)) rte_mempool_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n) { - int ret; - ret = __mempool_get_bulk(mp, obj_table, n, - !(mp->flags & MEMPOOL_F_SC_GET)); - if (ret == 0) - __mempool_check_cookies(mp, obj_table, n, 1); - return ret; + struct rte_mempool_cache *cache; + cache = rte_mempool_default_cache(mp, rte_lcore_id()); + return rte_mempool_generic_get(mp, obj_table, n, cache, mp->flags); } /** + * @deprecated * Get one object from the mempool (multi-consumers safe). * * If cache is enabled, objects will be retrieved first from cache, @@ -1302,13 +1440,17 @@ rte_mempool_get_bulk(struct rte_mempool *mp, void **obj_table, unsigned n) * - 0: Success; objects taken. * - -ENOENT: Not enough entries in the mempool; no object is retrieved. */ +__rte_deprecated static inline int __attribute__((always_inline)) rte_mempool_mc_get(struct rte_mempool *mp, void **obj_p) { - return rte_mempool_mc_get_bulk(mp, obj_p, 1); + struct rte_mempool_cache *cache; + cache = rte_mempool_default_cache(mp, rte_lcore_id()); + return rte_mempool_generic_get(mp, obj_p, 1, cache, 0); } /** + * @deprecated * Get one object from the mempool (NOT multi-consumers safe). * * If cache is enabled, objects will be retrieved first from cache, @@ -1324,10 +1466,11 @@ rte_mempool_mc_get(struct rte_mempool *mp, void **obj_p) * - 0: Success; objects taken. * - -ENOENT: Not enough entries in the mempool; no object is retrieved. */ +__rte_deprecated static inline int __attribute__((always_inline)) rte_mempool_sc_get(struct rte_mempool *mp, void **obj_p) { - return rte_mempool_sc_get_bulk(mp, obj_p, 1); + return rte_mempool_generic_get(mp, obj_p, 1, NULL, MEMPOOL_F_SC_GET); } /** @@ -1357,6 +1500,21 @@ rte_mempool_get(struct rte_mempool *mp, void **obj_p) } /** + * 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. + * + * @param mp + * A pointer to the mempool structure. + * @return + * The number of entries in the mempool. + */ +unsigned int rte_mempool_avail_count(const struct rte_mempool *mp); + +/** + * @deprecated * Return the number of entries in the mempool. * * When cache is enabled, this function has to browse the length of @@ -1368,9 +1526,26 @@ rte_mempool_get(struct rte_mempool *mp, void **obj_p) * @return * The number of entries in the mempool. */ +__rte_deprecated unsigned rte_mempool_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. + * + * @param mp + * A pointer to the mempool structure. + * @return + * The number of free entries in the mempool. + */ +unsigned int +rte_mempool_in_use_count(const struct rte_mempool *mp); + +/** + * @deprecated * Return the number of free entries in the mempool ring. * i.e. how many entries can be freed back to the mempool. * @@ -1380,17 +1555,18 @@ unsigned rte_mempool_count(const struct rte_mempool *mp); * * 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. + * debug purposes. User-owned mempool caches are not accounted for. * * @param mp * A pointer to the mempool structure. * @return * The number of free entries in the mempool. */ +__rte_deprecated static inline unsigned rte_mempool_free_count(const struct rte_mempool *mp) { - return mp->size - rte_mempool_count(mp); + return rte_mempool_in_use_count(mp); } /** @@ -1398,7 +1574,7 @@ rte_mempool_free_count(const struct rte_mempool *mp) * * 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. + * purposes. User-owned mempool caches are not accounted for. * * @param mp * A pointer to the mempool structure. @@ -1409,7 +1585,7 @@ rte_mempool_free_count(const struct rte_mempool *mp) static inline int rte_mempool_full(const struct rte_mempool *mp) { - return !!(rte_mempool_count(mp) == mp->size); + return !!(rte_mempool_avail_count(mp) == mp->size); } /** @@ -1417,7 +1593,7 @@ rte_mempool_full(const struct rte_mempool *mp) * * 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. + * purposes. User-owned mempool caches are not accounted for. * * @param mp * A pointer to the mempool structure. @@ -1428,7 +1604,7 @@ rte_mempool_full(const struct rte_mempool *mp) static inline int rte_mempool_empty(const struct rte_mempool *mp) { - return !!(rte_mempool_count(mp) == 0); + return !!(rte_mempool_avail_count(mp) == 0); } /**