/*- * * Copyright(c) 2015-2017 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 #include 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 /** * A macro that points to an offset from the start * of the crypto operation structure (rte_crypto_op) * * The returned pointer is cast to type t. * * @param c * The crypto operation. * @param o * The offset from the start of the crypto operation. * @param t * The type to cast the result into. */ #define rte_crypto_op_ctod_offset(c, t, o) \ ((t)((char *)(c) + (o))) /** * A macro that returns the physical address that points * to an offset from the start of the crypto operation * (rte_crypto_op) * * @param c * The crypto operation. * @param o * The offset from the start of the crypto operation * to calculate address from. */ #define rte_crypto_op_ctophys_offset(c, o) \ (phys_addr_t)((c)->phys_addr + (o)) /** * Crypto parameters range description */ struct rte_crypto_param_range { uint16_t min; /**< minimum size */ uint16_t max; /**< maximum 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 */ }; /** * Symmetric Crypto Capability */ struct rte_cryptodev_symmetric_capability { enum rte_crypto_sym_xform_type xform_type; /**< Transform type : Authentication / Cipher / AEAD */ RTE_STD_C11 union { struct { enum rte_crypto_auth_algorithm algo; /**< authentication algorithm */ uint16_t block_size; /**< algorithm block size */ struct rte_crypto_param_range key_size; /**< auth key size range */ struct rte_crypto_param_range digest_size; /**< digest size range */ struct rte_crypto_param_range aad_size; /**< Additional authentication data size range */ struct rte_crypto_param_range iv_size; /**< Initialisation vector 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 rte_crypto_param_range key_size; /**< cipher key size range */ struct rte_crypto_param_range iv_size; /**< Initialisation vector data size range */ } cipher; /**< Symmetric Cipher transform capabilities */ struct { enum rte_crypto_aead_algorithm algo; /**< AEAD algorithm */ uint16_t block_size; /**< algorithm block size */ struct rte_crypto_param_range key_size; /**< AEAD key size range */ struct rte_crypto_param_range digest_size; /**< digest size range */ struct rte_crypto_param_range aad_size; /**< Additional authentication data size range */ struct rte_crypto_param_range iv_size; /**< Initialisation vector data size range */ } aead; }; }; /** 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 */ }; }; /** Structure used to describe crypto algorithms */ struct rte_cryptodev_sym_capability_idx { enum rte_crypto_sym_xform_type type; union { enum rte_crypto_cipher_algorithm cipher; enum rte_crypto_auth_algorithm auth; enum rte_crypto_aead_algorithm aead; } algo; }; /** * Provide capabilities available for defined device and algorithm * * @param dev_id The identifier of the device. * @param idx Description of crypto algorithms. * * @return * - Return description of the symmetric crypto capability if exist. * - Return NULL if the capability not exist. */ const struct rte_cryptodev_symmetric_capability * rte_cryptodev_sym_capability_get(uint8_t dev_id, const struct rte_cryptodev_sym_capability_idx *idx); /** * Check if key size and initial vector are supported * in crypto cipher capability * * @param capability Description of the symmetric crypto capability. * @param key_size Cipher key size. * @param iv_size Cipher initial vector size. * * @return * - Return 0 if the parameters are in range of the capability. * - Return -1 if the parameters are out of range of the capability. */ int rte_cryptodev_sym_capability_check_cipher( const struct rte_cryptodev_symmetric_capability *capability, uint16_t key_size, uint16_t iv_size); /** * Check if key size and initial vector are supported * in crypto auth capability * * @param capability Description of the symmetric crypto capability. * @param key_size Auth key size. * @param digest_size Auth digest size. * @param iv_size Auth initial vector size. * * @return * - Return 0 if the parameters are in range of the capability. * - Return -1 if the parameters are out of range of the capability. */ int rte_cryptodev_sym_capability_check_auth( const struct rte_cryptodev_symmetric_capability *capability, uint16_t key_size, uint16_t digest_size, uint16_t iv_size); /** * Check if key, digest, AAD and initial vector sizes are supported * in crypto AEAD capability * * @param capability Description of the symmetric crypto capability. * @param key_size AEAD key size. * @param digest_size AEAD digest size. * @param aad_size AEAD AAD size. * @param iv_size AEAD IV size. * * @return * - Return 0 if the parameters are in range of the capability. * - Return -1 if the parameters are out of range of the capability. */ int rte_cryptodev_sym_capability_check_aead( const struct rte_cryptodev_symmetric_capability *capability, uint16_t key_size, uint16_t digest_size, uint16_t aad_size, uint16_t iv_size); /** * Provide the cipher algorithm enum, given an algorithm string * * @param algo_enum A pointer to the cipher algorithm * enum to be filled * @param algo_string Authentication algo string * * @return * - Return -1 if string is not valid * - Return 0 is the string is valid */ int rte_cryptodev_get_cipher_algo_enum(enum rte_crypto_cipher_algorithm *algo_enum, const char *algo_string); /** * Provide the authentication algorithm enum, given an algorithm string * * @param algo_enum A pointer to the authentication algorithm * enum to be filled * @param algo_string Authentication algo string * * @return * - Return -1 if string is not valid * - Return 0 is the string is valid */ int rte_cryptodev_get_auth_algo_enum(enum rte_crypto_auth_algorithm *algo_enum, const char *algo_string); /** * Provide the AEAD algorithm enum, given an algorithm string * * @param algo_enum A pointer to the AEAD algorithm * enum to be filled * @param algo_string AEAD algorithm string * * @return * - Return -1 if string is not valid * - Return 0 is the string is valid */ int rte_cryptodev_get_aead_algo_enum(enum rte_crypto_aead_algorithm *algo_enum, const char *algo_string); /** 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 */ #define RTE_CRYPTODEV_FF_CPU_AVX512 (1ULL << 8) /**< Utilises CPU SIMD AVX512 instructions */ #define RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER (1ULL << 9) /**< Scatter-gather mbufs are supported */ #define RTE_CRYPTODEV_FF_CPU_NEON (1ULL << 10) /**< Utilises CPU NEON instructions */ #define RTE_CRYPTODEV_FF_CPU_ARM_CE (1ULL << 11) /**< Utilises ARM CPU Cryptographic Extensions */ /** * 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. */ uint8_t driver_id; /**< Driver identifier */ 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. */ unsigned int max_nb_sessions_per_qp; /**< Maximum number of sessions per queue pair. * Default 0 for infinite sessions */ } 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_NAME_MAX_LEN (64) /**< Max length of name of crypto PMD */ /** * @deprecated * * 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. */ __rte_deprecated 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); /** * Get number of crypto device defined type. * * @param driver_id driver identifier. * * @return * Returns number of crypto device. */ extern uint8_t rte_cryptodev_device_count_by_driver(uint8_t driver_id); /** * Get number and identifiers of attached crypto devices that * use the same crypto driver. * * @param driver_name driver name. * @param devices output devices identifiers. * @param nb_devices maximal number of devices. * * @return * Returns number of attached crypto device. */ uint8_t rte_cryptodev_devices_get(const char *driver_name, uint8_t *devices, uint8_t nb_devices); /* * 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 */ }; /** * 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. * @param session_pool Pointer to device session mempool, used * for session-less operations. * * @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, struct rte_mempool *session_pool); /** * 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. */ 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_device *device; /**< Backing device */ uint8_t driver_id; /**< Crypto driver identifier*/ 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; /** * * 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 { __extension__ void *sess_private_data[0]; /**< Private session material */ }; /** * Create symmetric crypto session header (generic with no private data) * * @param mempool Symmetric session mempool to allocate session * objects from * @return * - On success return pointer to sym-session * - On failure returns NULL */ struct rte_cryptodev_sym_session * rte_cryptodev_sym_session_create(struct rte_mempool *mempool); /** * Frees symmetric crypto session header, after checking that all * the device private data has been freed, returning it * to its original mempool. * * @param sess Session header to be freed. * * @return * - 0 if successful. * - -EINVAL if session is NULL. * - -EBUSY if not all device private data has been freed. */ int rte_cryptodev_sym_session_free(struct rte_cryptodev_sym_session *sess); /** * Fill out private data for the device id, based on its device type. * * @param dev_id ID of device that we want the session to be used on * @param sess Session where the private data will be attached to * @param xforms Symmetric crypto transform operations to apply on flow * processed with this session * @param mempool Mempool where the private data is allocated. * * @return * - On success, zero. * - -EINVAL if input parameters are invalid. * - -ENOTSUP if crypto device does not support the crypto transform. * - -ENOMEM if the private session could not be allocated. */ int rte_cryptodev_sym_session_init(uint8_t dev_id, struct rte_cryptodev_sym_session *sess, struct rte_crypto_sym_xform *xforms, struct rte_mempool *mempool); /** * Frees private data for the device id, based on its device type, * returning it to its mempool. * * @param dev_id ID of device that uses the session. * @param sess Session containing the reference to the private data * * @return * - 0 if successful. * - -EINVAL if device is invalid or session is NULL. */ int rte_cryptodev_sym_session_clear(uint8_t dev_id, struct rte_cryptodev_sym_session *sess); /** * Get the size of the header session, for all registered drivers. * * @return * Size of the header session. */ unsigned int rte_cryptodev_get_header_session_size(void); /** * Get the size of the private 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 session */ unsigned int rte_cryptodev_get_private_session_size(uint8_t dev_id); /** * Attach queue pair with sym session. * * @param dev_id Device to which the session will be attached. * @param qp_id Queue pair to which the session will be attached. * @param session Session pointer previously allocated by * *rte_cryptodev_sym_session_create*. * * @return * - On success, zero. * - On failure, a negative value. */ int rte_cryptodev_queue_pair_attach_sym_session(uint8_t dev_id, uint16_t qp_id, struct rte_cryptodev_sym_session *session); /** * Detach queue pair with sym session. * * @param dev_id Device to which the session is attached. * @param qp_id Queue pair to which the session is attached. * @param session Session pointer previously allocated by * *rte_cryptodev_sym_session_create*. * * @return * - On success, zero. * - On failure, a negative value. */ int rte_cryptodev_queue_pair_detach_sym_session(uint8_t dev_id, uint16_t qp_id, struct rte_cryptodev_sym_session *session); /** * 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); #ifdef __cplusplus } #endif #endif /* _RTE_CRYPTODEV_H_ */