+ * @return
+ * - 0 if successful.
+ * - -EINVAL if device is invalid or session is NULL.
+ * - -ENOTSUP if crypto device does not support symmetric operations.
+ */
+int
+rte_cryptodev_sym_session_clear(uint8_t dev_id,
+ struct rte_cryptodev_sym_session *sess);
+
+/**
+ * Frees resources held by asymmetric session during rte_cryptodev_session_init
+ *
+ * @param dev_id ID of device that uses the asymmetric session.
+ * @param sess Asymmetric session setup on device using
+ * rte_cryptodev_session_init
+ * @return
+ * - 0 if successful.
+ * - -EINVAL if device is invalid or session is NULL.
+ */
+__rte_experimental
+int
+rte_cryptodev_asym_session_clear(uint8_t dev_id,
+ struct rte_cryptodev_asym_session *sess);
+
+/**
+ * Get the size of the header session, for all registered drivers excluding
+ * the user data size.
+ *
+ * @return
+ * Size of the symmetric header session.
+ */
+unsigned int
+rte_cryptodev_sym_get_header_session_size(void);
+
+/**
+ * Get the size of the header session from created session.
+ *
+ * @param sess
+ * The sym cryptodev session pointer
+ *
+ * @return
+ * - If sess is not NULL, return the size of the header session including
+ * the private data size defined within sess.
+ * - If sess is NULL, return 0.
+ */
+__rte_experimental
+unsigned int
+rte_cryptodev_sym_get_existing_header_session_size(
+ struct rte_cryptodev_sym_session *sess);
+
+/**
+ * Get the size of the asymmetric session header, for all registered drivers.
+ *
+ * @return
+ * Size of the asymmetric header session.
+ */
+__rte_experimental
+unsigned int
+rte_cryptodev_asym_get_header_session_size(void);
+
+/**
+ * Get the size of the private symmetric session data
+ * for a device.
+ *
+ * @param dev_id The device identifier.
+ *
+ * @return
+ * - Size of the private data, if successful
+ * - 0 if device is invalid or does not have private
+ * symmetric session
+ */
+unsigned int
+rte_cryptodev_sym_get_private_session_size(uint8_t dev_id);
+
+/**
+ * Get the size of the private data for asymmetric session
+ * on device
+ *
+ * @param dev_id The device identifier.
+ *
+ * @return
+ * - Size of the asymmetric private data, if successful
+ * - 0 if device is invalid or does not have private session
+ */
+__rte_experimental
+unsigned int
+rte_cryptodev_asym_get_private_session_size(uint8_t dev_id);
+
+/**
+ * Provide driver identifier.
+ *
+ * @param name
+ * The pointer to a driver name.
+ * @return
+ * The driver type identifier or -1 if no driver found
+ */
+int rte_cryptodev_driver_id_get(const char *name);
+
+/**
+ * Provide driver name.
+ *
+ * @param driver_id
+ * The driver identifier.
+ * @return
+ * The driver name or null if no driver found
+ */
+const char *rte_cryptodev_driver_name_get(uint8_t driver_id);
+
+/**
+ * Store user data in a session.
+ *
+ * @param sess Session pointer allocated by