/*- * * Copyright(c) 2015-2016 Intel Corporation. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _RTE_CRYPTODEV_H_ #define _RTE_CRYPTODEV_H_ /** * @file rte_cryptodev.h * * RTE Cryptographic Device APIs * * Defines RTE Crypto Device APIs for the provisioning of cipher and * authentication operations. */ #ifdef __cplusplus extern "C" { #endif #include "rte_kvargs.h" #include "rte_crypto.h" #include "rte_dev.h" #include #define CRYPTODEV_NAME_NULL_PMD crypto_null /**< Null crypto PMD device name */ #define CRYPTODEV_NAME_AESNI_MB_PMD crypto_aesni_mb /**< AES-NI Multi buffer PMD device name */ #define CRYPTODEV_NAME_AESNI_GCM_PMD crypto_aesni_gcm /**< AES-NI GCM PMD device name */ #define CRYPTODEV_NAME_OPENSSL_PMD crypto_openssl /**< Open SSL Crypto PMD device name */ #define CRYPTODEV_NAME_QAT_SYM_PMD crypto_qat /**< Intel QAT Symmetric Crypto PMD device name */ #define CRYPTODEV_NAME_SNOW3G_PMD crypto_snow3g /**< SNOW 3G PMD device name */ #define CRYPTODEV_NAME_KASUMI_PMD crypto_kasumi /**< KASUMI PMD device name */ #define CRYPTODEV_NAME_ZUC_PMD crypto_zuc /**< KASUMI PMD device name */ /** Crypto device type */ enum rte_cryptodev_type { RTE_CRYPTODEV_NULL_PMD = 1, /**< Null crypto PMD */ RTE_CRYPTODEV_AESNI_GCM_PMD, /**< AES-NI GCM PMD */ RTE_CRYPTODEV_AESNI_MB_PMD, /**< AES-NI multi buffer PMD */ RTE_CRYPTODEV_QAT_SYM_PMD, /**< QAT PMD Symmetric Crypto */ RTE_CRYPTODEV_SNOW3G_PMD, /**< SNOW 3G PMD */ RTE_CRYPTODEV_KASUMI_PMD, /**< KASUMI PMD */ RTE_CRYPTODEV_ZUC_PMD, /**< ZUC PMD */ RTE_CRYPTODEV_OPENSSL_PMD, /**< OpenSSL PMD */ }; extern const char **rte_cyptodev_names; /* Logging Macros */ #define CDEV_LOG_ERR(...) \ RTE_LOG(ERR, CRYPTODEV, \ RTE_FMT("%s() line %u: " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \ __func__, __LINE__, RTE_FMT_TAIL(__VA_ARGS__,))) #define CDEV_PMD_LOG_ERR(dev, ...) \ RTE_LOG(ERR, CRYPTODEV, \ RTE_FMT("[%s] %s() line %u: " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \ dev, __func__, __LINE__, RTE_FMT_TAIL(__VA_ARGS__,))) #ifdef RTE_LIBRTE_CRYPTODEV_DEBUG #define CDEV_LOG_DEBUG(...) \ RTE_LOG(DEBUG, CRYPTODEV, \ RTE_FMT("%s() line %u: " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \ __func__, __LINE__, RTE_FMT_TAIL(__VA_ARGS__,))) #define CDEV_PMD_TRACE(...) \ RTE_LOG(DEBUG, CRYPTODEV, \ RTE_FMT("[%s] %s: " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \ dev, __func__, RTE_FMT_TAIL(__VA_ARGS__,))) #else #define CDEV_LOG_DEBUG(...) (void)0 #define CDEV_PMD_TRACE(...) (void)0 #endif /** * Symmetric Crypto Capability */ struct rte_cryptodev_symmetric_capability { enum rte_crypto_sym_xform_type xform_type; /**< Transform type : Authentication / Cipher */ RTE_STD_C11 union { struct { enum rte_crypto_auth_algorithm algo; /**< authentication algorithm */ uint16_t block_size; /**< algorithm block size */ struct { uint16_t min; /**< minimum key size */ uint16_t max; /**< maximum key size */ uint16_t increment; /**< if a range of sizes are supported, * this parameter is used to indicate * increments in byte size that are supported * between the minimum and maximum */ } key_size; /**< auth key size range */ struct { uint16_t min; /**< minimum digest size */ uint16_t max; /**< maximum digest size */ uint16_t increment; /**< if a range of sizes are supported, * this parameter is used to indicate * increments in byte size that are supported * between the minimum and maximum */ } digest_size; /**< digest size range */ struct { uint16_t min; /**< minimum aad size */ uint16_t max; /**< maximum aad size */ uint16_t increment; /**< if a range of sizes are supported, * this parameter is used to indicate * increments in byte size that are supported * between the minimum and maximum */ } aad_size; /**< Additional authentication data size range */ } auth; /**< Symmetric Authentication transform capabilities */ struct { enum rte_crypto_cipher_algorithm algo; /**< cipher algorithm */ uint16_t block_size; /**< algorithm block size */ struct { uint16_t min; /**< minimum key size */ uint16_t max; /**< maximum key size */ uint16_t increment; /**< if a range of sizes are supported, * this parameter is used to indicate * increments in byte size that are supported * between the minimum and maximum */ } key_size; /**< cipher key size range */ struct { uint16_t min; /**< minimum iv size */ uint16_t max; /**< maximum iv size */ uint16_t increment; /**< if a range of sizes are supported, * this parameter is used to indicate * increments in byte size that are supported * between the minimum and maximum */ } iv_size; /**< Initialisation vector data size range */ } cipher; /**< Symmetric Cipher transform capabilities */ }; }; /** Structure used to capture a capability of a crypto device */ struct rte_cryptodev_capabilities { enum rte_crypto_op_type op; /**< Operation type */ RTE_STD_C11 union { struct rte_cryptodev_symmetric_capability sym; /**< Symmetric operation capability parameters */ }; }; /** Macro used at end of crypto PMD list */ #define RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST() \ { RTE_CRYPTO_OP_TYPE_UNDEFINED } /** * Crypto device supported feature flags * * Note: * New features flags should be added to the end of the list * * Keep these flags synchronised with rte_cryptodev_get_feature_name() */ #define RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO (1ULL << 0) /**< Symmetric crypto operations are supported */ #define RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO (1ULL << 1) /**< Asymmetric crypto operations are supported */ #define RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING (1ULL << 2) /**< Chaining symmetric crypto operations are supported */ #define RTE_CRYPTODEV_FF_CPU_SSE (1ULL << 3) /**< Utilises CPU SIMD SSE instructions */ #define RTE_CRYPTODEV_FF_CPU_AVX (1ULL << 4) /**< Utilises CPU SIMD AVX instructions */ #define RTE_CRYPTODEV_FF_CPU_AVX2 (1ULL << 5) /**< Utilises CPU SIMD AVX2 instructions */ #define RTE_CRYPTODEV_FF_CPU_AESNI (1ULL << 6) /**< Utilises CPU AES-NI instructions */ #define RTE_CRYPTODEV_FF_HW_ACCELERATED (1ULL << 7) /**< Operations are off-loaded to an external hardware accelerator */ /** * Get the name of a crypto device feature flag * * @param flag The mask describing the flag. * * @return * The name of this flag, or NULL if it's not a valid feature flag. */ extern const char * rte_cryptodev_get_feature_name(uint64_t flag); /** Crypto device information */ struct rte_cryptodev_info { const char *driver_name; /**< Driver name. */ enum rte_cryptodev_type dev_type; /**< Device type */ struct rte_pci_device *pci_dev; /**< PCI information. */ uint64_t feature_flags; /**< Feature flags */ const struct rte_cryptodev_capabilities *capabilities; /**< Array of devices supported capabilities */ unsigned max_nb_queue_pairs; /**< Maximum number of queues pairs supported by device. */ struct { unsigned max_nb_sessions; /**< Maximum number of sessions supported by device. */ } sym; }; #define RTE_CRYPTODEV_DETACHED (0) #define RTE_CRYPTODEV_ATTACHED (1) /** Definitions of Crypto device event types */ enum rte_cryptodev_event_type { RTE_CRYPTODEV_EVENT_UNKNOWN, /**< unknown event type */ RTE_CRYPTODEV_EVENT_ERROR, /**< error interrupt event */ RTE_CRYPTODEV_EVENT_MAX /**< max value of this enum */ }; /** Crypto device queue pair configuration structure. */ struct rte_cryptodev_qp_conf { uint32_t nb_descriptors; /**< Number of descriptors per queue pair */ }; /** * Typedef for application callback function to be registered by application * software for notification of device events * * @param dev_id Crypto device identifier * @param event Crypto device event to register for notification of. * @param cb_arg User specified parameter to be passed as to passed to * users callback function. */ typedef void (*rte_cryptodev_cb_fn)(uint8_t dev_id, enum rte_cryptodev_event_type event, void *cb_arg); /** Crypto Device statistics */ struct rte_cryptodev_stats { uint64_t enqueued_count; /**< Count of all operations enqueued */ uint64_t dequeued_count; /**< Count of all operations dequeued */ uint64_t enqueue_err_count; /**< Total error count on operations enqueued */ uint64_t dequeue_err_count; /**< Total error count on operations dequeued */ }; #define RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS 8 #define RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS 2048 /** * @internal * Initialisation parameters for virtual crypto devices */ struct rte_crypto_vdev_init_params { unsigned max_nb_queue_pairs; unsigned max_nb_sessions; uint8_t socket_id; }; /** * Parse virtual device initialisation parameters input arguments * @internal * * @params params Initialisation parameters with defaults set. * @params input_args Command line arguments * * @return * 0 on successful parse * <0 on failure to parse */ int rte_cryptodev_parse_vdev_init_params( struct rte_crypto_vdev_init_params *params, const char *input_args); /** * Create a virtual crypto device * * @param name Cryptodev PMD name of device to be created. * @param args Options arguments for device. * * @return * - On successful creation of the cryptodev the device index is returned, * which will be between 0 and rte_cryptodev_count(). * - In the case of a failure, returns -1. */ extern int rte_cryptodev_create_vdev(const char *name, const char *args); /** * Get the device identifier for the named crypto device. * * @param name device name to select the device structure. * * @return * - Returns crypto device identifier on success. * - Return -1 on failure to find named crypto device. */ extern int rte_cryptodev_get_dev_id(const char *name); /** * Get the total number of crypto devices that have been successfully * initialised. * * @return * - The total number of usable crypto devices. */ extern uint8_t rte_cryptodev_count(void); extern uint8_t rte_cryptodev_count_devtype(enum rte_cryptodev_type type); /* * Return the NUMA socket to which a device is connected * * @param dev_id * The identifier of the device * @return * The NUMA socket id to which the device is connected or * a default of zero if the socket could not be determined. * -1 if returned is the dev_id value is out of range. */ extern int rte_cryptodev_socket_id(uint8_t dev_id); /** Crypto device configuration structure */ struct rte_cryptodev_config { int socket_id; /**< Socket to allocate resources on */ uint16_t nb_queue_pairs; /**< Number of queue pairs to configure on device */ struct { uint32_t nb_objs; /**< Number of objects in mempool */ uint32_t cache_size; /**< l-core object cache size */ } session_mp; /**< Session mempool configuration */ }; /** * Configure a device. * * This function must be invoked first before any other function in the * API. This function can also be re-invoked when a device is in the * stopped state. * * @param dev_id The identifier of the device to configure. * @param config The crypto device configuration structure. * * @return * - 0: Success, device configured. * - <0: Error code returned by the driver configuration function. */ extern int rte_cryptodev_configure(uint8_t dev_id, struct rte_cryptodev_config *config); /** * Start an device. * * The device start step is the last one and consists of setting the configured * offload features and in starting the transmit and the receive units of the * device. * On success, all basic functions exported by the API (link status, * receive/transmit, and so on) can be invoked. * * @param dev_id * The identifier of the device. * @return * - 0: Success, device started. * - <0: Error code of the driver device start function. */ extern int rte_cryptodev_start(uint8_t dev_id); /** * Stop an device. The device can be restarted with a call to * rte_cryptodev_start() * * @param dev_id The identifier of the device. */ extern void rte_cryptodev_stop(uint8_t dev_id); /** * Close an device. The device cannot be restarted! * * @param dev_id The identifier of the device. * * @return * - 0 on successfully closing device * - <0 on failure to close device */ extern int rte_cryptodev_close(uint8_t dev_id); /** * Allocate and set up a receive queue pair for a device. * * * @param dev_id The identifier of the device. * @param queue_pair_id The index of the queue pairs to set up. The * value must be in the range [0, nb_queue_pair * - 1] previously supplied to * rte_cryptodev_configure(). * @param qp_conf The pointer to the configuration data to be * used for the queue pair. NULL value is * allowed, in which case default configuration * will be used. * @param socket_id The *socket_id* argument is the socket * identifier in case of NUMA. The value can be * *SOCKET_ID_ANY* if there is no NUMA constraint * for the DMA memory allocated for the receive * queue pair. * * @return * - 0: Success, queue pair correctly set up. * - <0: Queue pair configuration failed */ extern int rte_cryptodev_queue_pair_setup(uint8_t dev_id, uint16_t queue_pair_id, const struct rte_cryptodev_qp_conf *qp_conf, int socket_id); /** * Start a specified queue pair of a device. It is used * when deferred_start flag of the specified queue is true. * * @param dev_id The identifier of the device * @param queue_pair_id The index of the queue pair to start. The value * must be in the range [0, nb_queue_pair - 1] * previously supplied to * rte_crypto_dev_configure(). * @return * - 0: Success, the transmit queue is correctly set up. * - -EINVAL: The dev_id or the queue_id out of range. * - -ENOTSUP: The function not supported in PMD driver. */ extern int rte_cryptodev_queue_pair_start(uint8_t dev_id, uint16_t queue_pair_id); /** * Stop specified queue pair of a device * * @param dev_id The identifier of the device * @param queue_pair_id The index of the queue pair to stop. The value * must be in the range [0, nb_queue_pair - 1] * previously supplied to * rte_cryptodev_configure(). * @return * - 0: Success, the transmit queue is correctly set up. * - -EINVAL: The dev_id or the queue_id out of range. * - -ENOTSUP: The function not supported in PMD driver. */ extern int rte_cryptodev_queue_pair_stop(uint8_t dev_id, uint16_t queue_pair_id); /** * Get the number of queue pairs on a specific crypto device * * @param dev_id Crypto device identifier. * @return * - The number of configured queue pairs. */ extern uint16_t rte_cryptodev_queue_pair_count(uint8_t dev_id); /** * Retrieve the general I/O statistics of a device. * * @param dev_id The identifier of the device. * @param stats A pointer to a structure of type * *rte_cryptodev_stats* to be filled with the * values of device counters. * @return * - Zero if successful. * - Non-zero otherwise. */ extern int rte_cryptodev_stats_get(uint8_t dev_id, struct rte_cryptodev_stats *stats); /** * Reset the general I/O statistics of a device. * * @param dev_id The identifier of the device. */ extern void rte_cryptodev_stats_reset(uint8_t dev_id); /** * Retrieve the contextual information of a device. * * @param dev_id The identifier of the device. * @param dev_info A pointer to a structure of type * *rte_cryptodev_info* to be filled with the * contextual information of the device. */ extern void rte_cryptodev_info_get(uint8_t dev_id, struct rte_cryptodev_info *dev_info); /** * Register a callback function for specific device id. * * @param dev_id Device id. * @param event Event interested. * @param cb_fn User supplied callback function to be called. * @param cb_arg Pointer to the parameters for the registered * callback. * * @return * - On success, zero. * - On failure, a negative value. */ extern int rte_cryptodev_callback_register(uint8_t dev_id, enum rte_cryptodev_event_type event, rte_cryptodev_cb_fn cb_fn, void *cb_arg); /** * Unregister a callback function for specific device id. * * @param dev_id The device identifier. * @param event Event interested. * @param cb_fn User supplied callback function to be called. * @param cb_arg Pointer to the parameters for the registered * callback. * * @return * - On success, zero. * - On failure, a negative value. */ extern int rte_cryptodev_callback_unregister(uint8_t dev_id, enum rte_cryptodev_event_type event, rte_cryptodev_cb_fn cb_fn, void *cb_arg); typedef uint16_t (*dequeue_pkt_burst_t)(void *qp, struct rte_crypto_op **ops, uint16_t nb_ops); /**< Dequeue processed packets from queue pair of a device. */ typedef uint16_t (*enqueue_pkt_burst_t)(void *qp, struct rte_crypto_op **ops, uint16_t nb_ops); /**< Enqueue packets for processing on queue pair of a device. */ struct rte_cryptodev_callback; /** Structure to keep track of registered callbacks */ TAILQ_HEAD(rte_cryptodev_cb_list, rte_cryptodev_callback); /** The data structure associated with each crypto device. */ struct rte_cryptodev { dequeue_pkt_burst_t dequeue_burst; /**< Pointer to PMD receive function. */ enqueue_pkt_burst_t enqueue_burst; /**< Pointer to PMD transmit function. */ const struct rte_cryptodev_driver *driver; /**< Driver for this device */ struct rte_cryptodev_data *data; /**< Pointer to device data */ struct rte_cryptodev_ops *dev_ops; /**< Functions exported by PMD */ uint64_t feature_flags; /**< Supported features */ struct rte_pci_device *pci_dev; /**< PCI info. supplied by probing */ enum rte_cryptodev_type dev_type; /**< Crypto device type */ struct rte_cryptodev_cb_list link_intr_cbs; /**< User application callback for interrupts if present */ __extension__ uint8_t attached : 1; /**< Flag indicating the device is attached */ } __rte_cache_aligned; #define RTE_CRYPTODEV_NAME_MAX_LEN (64) /**< Max length of name of crypto PMD */ /** * * The data part, with no function pointers, associated with each device. * * This structure is safe to place in shared memory to be common among * different processes in a multi-process configuration. */ struct rte_cryptodev_data { uint8_t dev_id; /**< Device ID for this instance */ uint8_t socket_id; /**< Socket ID where memory is allocated */ char name[RTE_CRYPTODEV_NAME_MAX_LEN]; /**< Unique identifier name */ __extension__ uint8_t dev_started : 1; /**< Device state: STARTED(1)/STOPPED(0) */ struct rte_mempool *session_pool; /**< Session memory pool */ void **queue_pairs; /**< Array of pointers to queue pairs. */ uint16_t nb_queue_pairs; /**< Number of device queue pairs. */ void *dev_private; /**< PMD-specific private data */ } __rte_cache_aligned; extern struct rte_cryptodev *rte_cryptodevs; /** * * Dequeue a burst of processed crypto operations from a queue on the crypto * device. The dequeued operation are stored in *rte_crypto_op* structures * whose pointers are supplied in the *ops* array. * * The rte_cryptodev_dequeue_burst() function returns the number of ops * actually dequeued, which is the number of *rte_crypto_op* data structures * effectively supplied into the *ops* array. * * A return value equal to *nb_ops* indicates that the queue contained * at least *nb_ops* operations, and this is likely to signify that other * processed operations remain in the devices output queue. Applications * implementing a "retrieve as many processed operations as possible" policy * can check this specific case and keep invoking the * rte_cryptodev_dequeue_burst() function until a value less than * *nb_ops* is returned. * * The rte_cryptodev_dequeue_burst() function does not provide any error * notification to avoid the corresponding overhead. * * @param dev_id The symmetric crypto device identifier * @param qp_id The index of the queue pair from which to * retrieve processed packets. The value must be * in the range [0, nb_queue_pair - 1] previously * supplied to rte_cryptodev_configure(). * @param ops The address of an array of pointers to * *rte_crypto_op* structures that must be * large enough to store *nb_ops* pointers in it. * @param nb_ops The maximum number of operations to dequeue. * * @return * - The number of operations actually dequeued, which is the number * of pointers to *rte_crypto_op* structures effectively supplied to the * *ops* array. */ static inline uint16_t rte_cryptodev_dequeue_burst(uint8_t dev_id, uint16_t qp_id, struct rte_crypto_op **ops, uint16_t nb_ops) { struct rte_cryptodev *dev = &rte_cryptodevs[dev_id]; nb_ops = (*dev->dequeue_burst) (dev->data->queue_pairs[qp_id], ops, nb_ops); return nb_ops; } /** * Enqueue a burst of operations for processing on a crypto device. * * The rte_cryptodev_enqueue_burst() function is invoked to place * crypto operations on the queue *qp_id* of the device designated by * its *dev_id*. * * The *nb_ops* parameter is the number of operations to process which are * supplied in the *ops* array of *rte_crypto_op* structures. * * The rte_cryptodev_enqueue_burst() function returns the number of * operations it actually enqueued for processing. A return value equal to * *nb_ops* means that all packets have been enqueued. * * @param dev_id The identifier of the device. * @param qp_id The index of the queue pair which packets are * to be enqueued for processing. The value * must be in the range [0, nb_queue_pairs - 1] * previously supplied to * *rte_cryptodev_configure*. * @param ops The address of an array of *nb_ops* pointers * to *rte_crypto_op* structures which contain * the crypto operations to be processed. * @param nb_ops The number of operations to process. * * @return * The number of operations actually enqueued on the crypto device. The return * value can be less than the value of the *nb_ops* parameter when the * crypto devices queue is full or if invalid parameters are specified in * a *rte_crypto_op*. */ static inline uint16_t rte_cryptodev_enqueue_burst(uint8_t dev_id, uint16_t qp_id, struct rte_crypto_op **ops, uint16_t nb_ops) { struct rte_cryptodev *dev = &rte_cryptodevs[dev_id]; return (*dev->enqueue_burst)( dev->data->queue_pairs[qp_id], ops, nb_ops); } /** Cryptodev symmetric crypto session */ struct rte_cryptodev_sym_session { RTE_STD_C11 struct { uint8_t dev_id; /**< Device Id */ enum rte_cryptodev_type dev_type; /** Crypto Device type session created on */ struct rte_mempool *mp; /**< Mempool session allocated from */ } __rte_aligned(8); /**< Public symmetric session details */ __extension__ char _private[0]; /**< Private session material */ }; /** * Initialise a session for symmetric cryptographic operations. * * This function is used by the client to initialize immutable * parameters of symmetric cryptographic operation. * To perform the operation the rte_cryptodev_enqueue_burst function is * used. Each mbuf should contain a reference to the session * pointer returned from this function contained within it's crypto_op if a * session-based operation is being provisioned. Memory to contain the session * information is allocated from within mempool managed by the cryptodev. * * The rte_cryptodev_session_free must be called to free allocated * memory when the session is no longer required. * * @param dev_id The device identifier. * @param xform Crypto transform chain. * * @return * Pointer to the created session or NULL */ extern struct rte_cryptodev_sym_session * rte_cryptodev_sym_session_create(uint8_t dev_id, struct rte_crypto_sym_xform *xform); /** * Free the memory associated with a previously allocated session. * * @param dev_id The device identifier. * @param session Session pointer previously allocated by * *rte_cryptodev_sym_session_create*. * * @return * NULL on successful freeing of session. * Session pointer on failure to free session. */ extern struct rte_cryptodev_sym_session * rte_cryptodev_sym_session_free(uint8_t dev_id, struct rte_cryptodev_sym_session *session); #ifdef __cplusplus } #endif #endif /* _RTE_CRYPTODEV_H_ */