cryptodev: add sym session mempool create

[dpdk.git] / lib / librte_cryptodev / rte_cryptodev.c

diff --git a/lib/librte_cryptodev/rte_cryptodev.c b/lib/librte_cryptodev/rte_cryptodev.c
index 4929d04..ccc4c21 100644 (file)
--- a/lib/librte_cryptodev/rte_cryptodev.c
+++ b/lib/librte_cryptodev/rte_cryptodev.c
@@ -189,6 +189,16 @@ const char *rte_crypto_asym_op_strings[] = {
        [RTE_CRYPTO_ASYM_OP_SHARED_SECRET_COMPUTE] = "sharedsecret_compute",
 };
 
+/**
+ * The private data structure stored in the session mempool private data.
+ */
+struct rte_cryptodev_sym_session_pool_private_data {
+       uint16_t nb_drivers;
+       /**< number of elements in sess_data array */
+       uint16_t user_data_sz;
+       /**< session user data will be placed after sess_data */
+};
+
 int
 rte_cryptodev_get_cipher_algo_enum(enum rte_crypto_cipher_algorithm *algo_enum,
                const char *algo_string)
@@ -1223,6 +1233,46 @@ rte_cryptodev_asym_session_init(uint8_t dev_id,
        return 0;
 }
 
+struct rte_mempool * __rte_experimental
+rte_cryptodev_sym_session_pool_create(const char *name, uint32_t nb_elts,
+       uint32_t elt_size, uint32_t cache_size, uint16_t user_data_size,
+       int socket_id)
+{
+       struct rte_mempool *mp;
+       struct rte_cryptodev_sym_session_pool_private_data *pool_priv;
+       uint32_t obj_sz;
+
+       obj_sz = rte_cryptodev_sym_get_header_session_size() + user_data_size;
+       if (obj_sz > elt_size)
+               CDEV_LOG_INFO("elt_size %u is expanded to %u\n", elt_size,
+                               obj_sz);
+       else
+               obj_sz = elt_size;
+
+       mp = rte_mempool_create(name, nb_elts, obj_sz, cache_size,
+                       (uint32_t)(sizeof(*pool_priv)),
+                       NULL, NULL, NULL, NULL,
+                       socket_id, 0);
+       if (mp == NULL) {
+               CDEV_LOG_ERR("%s(name=%s) failed, rte_errno=%d\n",
+                       __func__, name, rte_errno);
+               return NULL;
+       }
+
+       pool_priv = rte_mempool_get_priv(mp);
+       if (!pool_priv) {
+               CDEV_LOG_ERR("%s(name=%s) failed to get private data\n",
+                       __func__, name);
+               rte_mempool_free(mp);
+               return NULL;
+       }
+
+       pool_priv->nb_drivers = nb_drivers;
+       pool_priv->user_data_sz = user_data_size;
+
+       return mp;
+}
+
 struct rte_cryptodev_sym_session *
 rte_cryptodev_sym_session_create(struct rte_mempool *mp)
 {