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32 #ifndef _RTE_CRYPTODEV_H_
33 #define _RTE_CRYPTODEV_H_
36 * @file rte_cryptodev.h
38 * RTE Cryptographic Device APIs
40 * Defines RTE Crypto Device APIs for the provisioning of cipher and
41 * authentication operations.
48 #include "rte_kvargs.h"
49 #include "rte_crypto.h"
51 #include <rte_common.h>
52 #include <rte_config.h>
54 extern const char **rte_cyptodev_names;
58 #define CDEV_LOG_ERR(...) \
59 RTE_LOG(ERR, CRYPTODEV, \
60 RTE_FMT("%s() line %u: " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
61 __func__, __LINE__, RTE_FMT_TAIL(__VA_ARGS__,)))
63 #define CDEV_LOG_INFO(...) \
64 RTE_LOG(INFO, CRYPTODEV, \
65 RTE_FMT(RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
66 RTE_FMT_TAIL(__VA_ARGS__,)))
68 #ifdef RTE_LIBRTE_CRYPTODEV_DEBUG
69 #define CDEV_LOG_DEBUG(...) \
70 RTE_LOG(DEBUG, CRYPTODEV, \
71 RTE_FMT("%s() line %u: " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
72 __func__, __LINE__, RTE_FMT_TAIL(__VA_ARGS__,)))
74 #define CDEV_PMD_TRACE(...) \
75 RTE_LOG(DEBUG, CRYPTODEV, \
76 RTE_FMT("[%s] %s: " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
77 dev, __func__, RTE_FMT_TAIL(__VA_ARGS__,)))
80 #define CDEV_LOG_DEBUG(...) (void)0
81 #define CDEV_PMD_TRACE(...) (void)0
87 * A macro that points to an offset from the start
88 * of the crypto operation structure (rte_crypto_op)
90 * The returned pointer is cast to type t.
93 * The crypto operation.
95 * The offset from the start of the crypto operation.
97 * The type to cast the result into.
99 #define rte_crypto_op_ctod_offset(c, t, o) \
100 ((t)((char *)(c) + (o)))
103 * A macro that returns the physical address that points
104 * to an offset from the start of the crypto operation
108 * The crypto operation.
110 * The offset from the start of the crypto operation
111 * to calculate address from.
113 #define rte_crypto_op_ctophys_offset(c, o) \
114 (rte_iova_t)((c)->phys_addr + (o))
117 * Crypto parameters range description
119 struct rte_crypto_param_range {
120 uint16_t min; /**< minimum size */
121 uint16_t max; /**< maximum size */
123 /**< if a range of sizes are supported,
124 * this parameter is used to indicate
125 * increments in byte size that are supported
126 * between the minimum and maximum
131 * Symmetric Crypto Capability
133 struct rte_cryptodev_symmetric_capability {
134 enum rte_crypto_sym_xform_type xform_type;
135 /**< Transform type : Authentication / Cipher / AEAD */
139 enum rte_crypto_auth_algorithm algo;
140 /**< authentication algorithm */
142 /**< algorithm block size */
143 struct rte_crypto_param_range key_size;
144 /**< auth key size range */
145 struct rte_crypto_param_range digest_size;
146 /**< digest size range */
147 struct rte_crypto_param_range aad_size;
148 /**< Additional authentication data size range */
149 struct rte_crypto_param_range iv_size;
150 /**< Initialisation vector data size range */
152 /**< Symmetric Authentication transform capabilities */
154 enum rte_crypto_cipher_algorithm algo;
155 /**< cipher algorithm */
157 /**< algorithm block size */
158 struct rte_crypto_param_range key_size;
159 /**< cipher key size range */
160 struct rte_crypto_param_range iv_size;
161 /**< Initialisation vector data size range */
163 /**< Symmetric Cipher transform capabilities */
165 enum rte_crypto_aead_algorithm algo;
166 /**< AEAD algorithm */
168 /**< algorithm block size */
169 struct rte_crypto_param_range key_size;
170 /**< AEAD key size range */
171 struct rte_crypto_param_range digest_size;
172 /**< digest size range */
173 struct rte_crypto_param_range aad_size;
174 /**< Additional authentication data size range */
175 struct rte_crypto_param_range iv_size;
176 /**< Initialisation vector data size range */
181 /** Structure used to capture a capability of a crypto device */
182 struct rte_cryptodev_capabilities {
183 enum rte_crypto_op_type op;
184 /**< Operation type */
188 struct rte_cryptodev_symmetric_capability sym;
189 /**< Symmetric operation capability parameters */
193 /** Structure used to describe crypto algorithms */
194 struct rte_cryptodev_sym_capability_idx {
195 enum rte_crypto_sym_xform_type type;
197 enum rte_crypto_cipher_algorithm cipher;
198 enum rte_crypto_auth_algorithm auth;
199 enum rte_crypto_aead_algorithm aead;
204 * Provide capabilities available for defined device and algorithm
206 * @param dev_id The identifier of the device.
207 * @param idx Description of crypto algorithms.
210 * - Return description of the symmetric crypto capability if exist.
211 * - Return NULL if the capability not exist.
213 const struct rte_cryptodev_symmetric_capability *
214 rte_cryptodev_sym_capability_get(uint8_t dev_id,
215 const struct rte_cryptodev_sym_capability_idx *idx);
218 * Check if key size and initial vector are supported
219 * in crypto cipher capability
221 * @param capability Description of the symmetric crypto capability.
222 * @param key_size Cipher key size.
223 * @param iv_size Cipher initial vector size.
226 * - Return 0 if the parameters are in range of the capability.
227 * - Return -1 if the parameters are out of range of the capability.
230 rte_cryptodev_sym_capability_check_cipher(
231 const struct rte_cryptodev_symmetric_capability *capability,
232 uint16_t key_size, uint16_t iv_size);
235 * Check if key size and initial vector are supported
236 * in crypto auth capability
238 * @param capability Description of the symmetric crypto capability.
239 * @param key_size Auth key size.
240 * @param digest_size Auth digest size.
241 * @param iv_size Auth initial vector size.
244 * - Return 0 if the parameters are in range of the capability.
245 * - Return -1 if the parameters are out of range of the capability.
248 rte_cryptodev_sym_capability_check_auth(
249 const struct rte_cryptodev_symmetric_capability *capability,
250 uint16_t key_size, uint16_t digest_size, uint16_t iv_size);
253 * Check if key, digest, AAD and initial vector sizes are supported
254 * in crypto AEAD capability
256 * @param capability Description of the symmetric crypto capability.
257 * @param key_size AEAD key size.
258 * @param digest_size AEAD digest size.
259 * @param aad_size AEAD AAD size.
260 * @param iv_size AEAD IV size.
263 * - Return 0 if the parameters are in range of the capability.
264 * - Return -1 if the parameters are out of range of the capability.
267 rte_cryptodev_sym_capability_check_aead(
268 const struct rte_cryptodev_symmetric_capability *capability,
269 uint16_t key_size, uint16_t digest_size, uint16_t aad_size,
273 * Provide the cipher algorithm enum, given an algorithm string
275 * @param algo_enum A pointer to the cipher algorithm
277 * @param algo_string Authentication algo string
280 * - Return -1 if string is not valid
281 * - Return 0 is the string is valid
284 rte_cryptodev_get_cipher_algo_enum(enum rte_crypto_cipher_algorithm *algo_enum,
285 const char *algo_string);
288 * Provide the authentication algorithm enum, given an algorithm string
290 * @param algo_enum A pointer to the authentication algorithm
292 * @param algo_string Authentication algo string
295 * - Return -1 if string is not valid
296 * - Return 0 is the string is valid
299 rte_cryptodev_get_auth_algo_enum(enum rte_crypto_auth_algorithm *algo_enum,
300 const char *algo_string);
303 * Provide the AEAD algorithm enum, given an algorithm string
305 * @param algo_enum A pointer to the AEAD algorithm
307 * @param algo_string AEAD algorithm string
310 * - Return -1 if string is not valid
311 * - Return 0 is the string is valid
314 rte_cryptodev_get_aead_algo_enum(enum rte_crypto_aead_algorithm *algo_enum,
315 const char *algo_string);
317 /** Macro used at end of crypto PMD list */
318 #define RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST() \
319 { RTE_CRYPTO_OP_TYPE_UNDEFINED }
323 * Crypto device supported feature flags
326 * New features flags should be added to the end of the list
328 * Keep these flags synchronised with rte_cryptodev_get_feature_name()
330 #define RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO (1ULL << 0)
331 /**< Symmetric crypto operations are supported */
332 #define RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO (1ULL << 1)
333 /**< Asymmetric crypto operations are supported */
334 #define RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING (1ULL << 2)
335 /**< Chaining symmetric crypto operations are supported */
336 #define RTE_CRYPTODEV_FF_CPU_SSE (1ULL << 3)
337 /**< Utilises CPU SIMD SSE instructions */
338 #define RTE_CRYPTODEV_FF_CPU_AVX (1ULL << 4)
339 /**< Utilises CPU SIMD AVX instructions */
340 #define RTE_CRYPTODEV_FF_CPU_AVX2 (1ULL << 5)
341 /**< Utilises CPU SIMD AVX2 instructions */
342 #define RTE_CRYPTODEV_FF_CPU_AESNI (1ULL << 6)
343 /**< Utilises CPU AES-NI instructions */
344 #define RTE_CRYPTODEV_FF_HW_ACCELERATED (1ULL << 7)
345 /**< Operations are off-loaded to an external hardware accelerator */
346 #define RTE_CRYPTODEV_FF_CPU_AVX512 (1ULL << 8)
347 /**< Utilises CPU SIMD AVX512 instructions */
348 #define RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER (1ULL << 9)
349 /**< Scatter-gather mbufs are supported */
350 #define RTE_CRYPTODEV_FF_CPU_NEON (1ULL << 10)
351 /**< Utilises CPU NEON instructions */
352 #define RTE_CRYPTODEV_FF_CPU_ARM_CE (1ULL << 11)
353 /**< Utilises ARM CPU Cryptographic Extensions */
354 #define RTE_CRYPTODEV_FF_SECURITY (1ULL << 12)
355 /**< Support Security Protocol Processing */
359 * Get the name of a crypto device feature flag
361 * @param flag The mask describing the flag.
364 * The name of this flag, or NULL if it's not a valid feature flag.
368 rte_cryptodev_get_feature_name(uint64_t flag);
370 /** Crypto device information */
371 struct rte_cryptodev_info {
372 const char *driver_name; /**< Driver name. */
373 uint8_t driver_id; /**< Driver identifier */
374 struct rte_pci_device *pci_dev; /**< PCI information. */
376 uint64_t feature_flags; /**< Feature flags */
378 const struct rte_cryptodev_capabilities *capabilities;
379 /**< Array of devices supported capabilities */
381 unsigned max_nb_queue_pairs;
382 /**< Maximum number of queues pairs supported by device. */
385 unsigned max_nb_sessions;
386 /**< Maximum number of sessions supported by device. */
387 unsigned int max_nb_sessions_per_qp;
388 /**< Maximum number of sessions per queue pair.
389 * Default 0 for infinite sessions
394 #define RTE_CRYPTODEV_DETACHED (0)
395 #define RTE_CRYPTODEV_ATTACHED (1)
397 /** Definitions of Crypto device event types */
398 enum rte_cryptodev_event_type {
399 RTE_CRYPTODEV_EVENT_UNKNOWN, /**< unknown event type */
400 RTE_CRYPTODEV_EVENT_ERROR, /**< error interrupt event */
401 RTE_CRYPTODEV_EVENT_MAX /**< max value of this enum */
404 /** Crypto device queue pair configuration structure. */
405 struct rte_cryptodev_qp_conf {
406 uint32_t nb_descriptors; /**< Number of descriptors per queue pair */
410 * Typedef for application callback function to be registered by application
411 * software for notification of device events
413 * @param dev_id Crypto device identifier
414 * @param event Crypto device event to register for notification of.
415 * @param cb_arg User specified parameter to be passed as to passed to
416 * users callback function.
418 typedef void (*rte_cryptodev_cb_fn)(uint8_t dev_id,
419 enum rte_cryptodev_event_type event, void *cb_arg);
422 /** Crypto Device statistics */
423 struct rte_cryptodev_stats {
424 uint64_t enqueued_count;
425 /**< Count of all operations enqueued */
426 uint64_t dequeued_count;
427 /**< Count of all operations dequeued */
429 uint64_t enqueue_err_count;
430 /**< Total error count on operations enqueued */
431 uint64_t dequeue_err_count;
432 /**< Total error count on operations dequeued */
435 #define RTE_CRYPTODEV_NAME_MAX_LEN (64)
436 /**< Max length of name of crypto PMD */
439 * Get the device identifier for the named crypto device.
441 * @param name device name to select the device structure.
444 * - Returns crypto device identifier on success.
445 * - Return -1 on failure to find named crypto device.
448 rte_cryptodev_get_dev_id(const char *name);
451 * Get the crypto device name given a device identifier.
454 * The identifier of the device
457 * - Returns crypto device name.
458 * - Returns NULL if crypto device is not present.
461 rte_cryptodev_name_get(uint8_t dev_id);
464 * Get the total number of crypto devices that have been successfully
468 * - The total number of usable crypto devices.
471 rte_cryptodev_count(void);
474 * Get number of crypto device defined type.
476 * @param driver_id driver identifier.
479 * Returns number of crypto device.
482 rte_cryptodev_device_count_by_driver(uint8_t driver_id);
485 * Get number and identifiers of attached crypto devices that
486 * use the same crypto driver.
488 * @param driver_name driver name.
489 * @param devices output devices identifiers.
490 * @param nb_devices maximal number of devices.
493 * Returns number of attached crypto device.
496 rte_cryptodev_devices_get(const char *driver_name, uint8_t *devices,
499 * Return the NUMA socket to which a device is connected
502 * The identifier of the device
504 * The NUMA socket id to which the device is connected or
505 * a default of zero if the socket could not be determined.
506 * -1 if returned is the dev_id value is out of range.
509 rte_cryptodev_socket_id(uint8_t dev_id);
511 /** Crypto device configuration structure */
512 struct rte_cryptodev_config {
513 int socket_id; /**< Socket to allocate resources on */
514 uint16_t nb_queue_pairs;
515 /**< Number of queue pairs to configure on device */
519 * Configure a device.
521 * This function must be invoked first before any other function in the
522 * API. This function can also be re-invoked when a device is in the
525 * @param dev_id The identifier of the device to configure.
526 * @param config The crypto device configuration structure.
529 * - 0: Success, device configured.
530 * - <0: Error code returned by the driver configuration function.
533 rte_cryptodev_configure(uint8_t dev_id, struct rte_cryptodev_config *config);
538 * The device start step is the last one and consists of setting the configured
539 * offload features and in starting the transmit and the receive units of the
541 * On success, all basic functions exported by the API (link status,
542 * receive/transmit, and so on) can be invoked.
545 * The identifier of the device.
547 * - 0: Success, device started.
548 * - <0: Error code of the driver device start function.
551 rte_cryptodev_start(uint8_t dev_id);
554 * Stop an device. The device can be restarted with a call to
555 * rte_cryptodev_start()
557 * @param dev_id The identifier of the device.
560 rte_cryptodev_stop(uint8_t dev_id);
563 * Close an device. The device cannot be restarted!
565 * @param dev_id The identifier of the device.
568 * - 0 on successfully closing device
569 * - <0 on failure to close device
572 rte_cryptodev_close(uint8_t dev_id);
575 * Allocate and set up a receive queue pair for a device.
578 * @param dev_id The identifier of the device.
579 * @param queue_pair_id The index of the queue pairs to set up. The
580 * value must be in the range [0, nb_queue_pair
581 * - 1] previously supplied to
582 * rte_cryptodev_configure().
583 * @param qp_conf The pointer to the configuration data to be
584 * used for the queue pair. NULL value is
585 * allowed, in which case default configuration
587 * @param socket_id The *socket_id* argument is the socket
588 * identifier in case of NUMA. The value can be
589 * *SOCKET_ID_ANY* if there is no NUMA constraint
590 * for the DMA memory allocated for the receive
592 * @param session_pool Pointer to device session mempool, used
593 * for session-less operations.
596 * - 0: Success, queue pair correctly set up.
597 * - <0: Queue pair configuration failed
600 rte_cryptodev_queue_pair_setup(uint8_t dev_id, uint16_t queue_pair_id,
601 const struct rte_cryptodev_qp_conf *qp_conf, int socket_id,
602 struct rte_mempool *session_pool);
605 * Start a specified queue pair of a device. It is used
606 * when deferred_start flag of the specified queue is true.
608 * @param dev_id The identifier of the device
609 * @param queue_pair_id The index of the queue pair to start. The value
610 * must be in the range [0, nb_queue_pair - 1]
611 * previously supplied to
612 * rte_crypto_dev_configure().
614 * - 0: Success, the transmit queue is correctly set up.
615 * - -EINVAL: The dev_id or the queue_id out of range.
616 * - -ENOTSUP: The function not supported in PMD driver.
619 rte_cryptodev_queue_pair_start(uint8_t dev_id, uint16_t queue_pair_id);
622 * Stop specified queue pair of a device
624 * @param dev_id The identifier of the device
625 * @param queue_pair_id The index of the queue pair to stop. The value
626 * must be in the range [0, nb_queue_pair - 1]
627 * previously supplied to
628 * rte_cryptodev_configure().
630 * - 0: Success, the transmit queue is correctly set up.
631 * - -EINVAL: The dev_id or the queue_id out of range.
632 * - -ENOTSUP: The function not supported in PMD driver.
635 rte_cryptodev_queue_pair_stop(uint8_t dev_id, uint16_t queue_pair_id);
638 * Get the number of queue pairs on a specific crypto device
640 * @param dev_id Crypto device identifier.
642 * - The number of configured queue pairs.
645 rte_cryptodev_queue_pair_count(uint8_t dev_id);
649 * Retrieve the general I/O statistics of a device.
651 * @param dev_id The identifier of the device.
652 * @param stats A pointer to a structure of type
653 * *rte_cryptodev_stats* to be filled with the
654 * values of device counters.
656 * - Zero if successful.
657 * - Non-zero otherwise.
660 rte_cryptodev_stats_get(uint8_t dev_id, struct rte_cryptodev_stats *stats);
663 * Reset the general I/O statistics of a device.
665 * @param dev_id The identifier of the device.
668 rte_cryptodev_stats_reset(uint8_t dev_id);
671 * Retrieve the contextual information of a device.
673 * @param dev_id The identifier of the device.
674 * @param dev_info A pointer to a structure of type
675 * *rte_cryptodev_info* to be filled with the
676 * contextual information of the device.
678 * @note The capabilities field of dev_info is set to point to the first
679 * element of an array of struct rte_cryptodev_capabilities. The element after
680 * the last valid element has it's op field set to
681 * RTE_CRYPTO_OP_TYPE_UNDEFINED.
684 rte_cryptodev_info_get(uint8_t dev_id, struct rte_cryptodev_info *dev_info);
688 * Register a callback function for specific device id.
690 * @param dev_id Device id.
691 * @param event Event interested.
692 * @param cb_fn User supplied callback function to be called.
693 * @param cb_arg Pointer to the parameters for the registered
697 * - On success, zero.
698 * - On failure, a negative value.
701 rte_cryptodev_callback_register(uint8_t dev_id,
702 enum rte_cryptodev_event_type event,
703 rte_cryptodev_cb_fn cb_fn, void *cb_arg);
706 * Unregister a callback function for specific device id.
708 * @param dev_id The device identifier.
709 * @param event Event interested.
710 * @param cb_fn User supplied callback function to be called.
711 * @param cb_arg Pointer to the parameters for the registered
715 * - On success, zero.
716 * - On failure, a negative value.
719 rte_cryptodev_callback_unregister(uint8_t dev_id,
720 enum rte_cryptodev_event_type event,
721 rte_cryptodev_cb_fn cb_fn, void *cb_arg);
724 typedef uint16_t (*dequeue_pkt_burst_t)(void *qp,
725 struct rte_crypto_op **ops, uint16_t nb_ops);
726 /**< Dequeue processed packets from queue pair of a device. */
728 typedef uint16_t (*enqueue_pkt_burst_t)(void *qp,
729 struct rte_crypto_op **ops, uint16_t nb_ops);
730 /**< Enqueue packets for processing on queue pair of a device. */
735 struct rte_cryptodev_callback;
737 /** Structure to keep track of registered callbacks */
738 TAILQ_HEAD(rte_cryptodev_cb_list, rte_cryptodev_callback);
740 /** The data structure associated with each crypto device. */
741 struct rte_cryptodev {
742 dequeue_pkt_burst_t dequeue_burst;
743 /**< Pointer to PMD receive function. */
744 enqueue_pkt_burst_t enqueue_burst;
745 /**< Pointer to PMD transmit function. */
747 struct rte_cryptodev_data *data;
748 /**< Pointer to device data */
749 struct rte_cryptodev_ops *dev_ops;
750 /**< Functions exported by PMD */
751 uint64_t feature_flags;
752 /**< Supported features */
753 struct rte_device *device;
754 /**< Backing device */
757 /**< Crypto driver identifier*/
759 struct rte_cryptodev_cb_list link_intr_cbs;
760 /**< User application callback for interrupts if present */
763 /**< Context for security ops */
766 uint8_t attached : 1;
767 /**< Flag indicating the device is attached */
768 } __rte_cache_aligned;
771 rte_cryptodev_get_sec_ctx(uint8_t dev_id);
775 * The data part, with no function pointers, associated with each device.
777 * This structure is safe to place in shared memory to be common among
778 * different processes in a multi-process configuration.
780 struct rte_cryptodev_data {
782 /**< Device ID for this instance */
784 /**< Socket ID where memory is allocated */
785 char name[RTE_CRYPTODEV_NAME_MAX_LEN];
786 /**< Unique identifier name */
789 uint8_t dev_started : 1;
790 /**< Device state: STARTED(1)/STOPPED(0) */
792 struct rte_mempool *session_pool;
793 /**< Session memory pool */
795 /**< Array of pointers to queue pairs. */
796 uint16_t nb_queue_pairs;
797 /**< Number of device queue pairs. */
800 /**< PMD-specific private data */
801 } __rte_cache_aligned;
803 extern struct rte_cryptodev *rte_cryptodevs;
806 * Dequeue a burst of processed crypto operations from a queue on the crypto
807 * device. The dequeued operation are stored in *rte_crypto_op* structures
808 * whose pointers are supplied in the *ops* array.
810 * The rte_cryptodev_dequeue_burst() function returns the number of ops
811 * actually dequeued, which is the number of *rte_crypto_op* data structures
812 * effectively supplied into the *ops* array.
814 * A return value equal to *nb_ops* indicates that the queue contained
815 * at least *nb_ops* operations, and this is likely to signify that other
816 * processed operations remain in the devices output queue. Applications
817 * implementing a "retrieve as many processed operations as possible" policy
818 * can check this specific case and keep invoking the
819 * rte_cryptodev_dequeue_burst() function until a value less than
820 * *nb_ops* is returned.
822 * The rte_cryptodev_dequeue_burst() function does not provide any error
823 * notification to avoid the corresponding overhead.
825 * @param dev_id The symmetric crypto device identifier
826 * @param qp_id The index of the queue pair from which to
827 * retrieve processed packets. The value must be
828 * in the range [0, nb_queue_pair - 1] previously
829 * supplied to rte_cryptodev_configure().
830 * @param ops The address of an array of pointers to
831 * *rte_crypto_op* structures that must be
832 * large enough to store *nb_ops* pointers in it.
833 * @param nb_ops The maximum number of operations to dequeue.
836 * - The number of operations actually dequeued, which is the number
837 * of pointers to *rte_crypto_op* structures effectively supplied to the
840 static inline uint16_t
841 rte_cryptodev_dequeue_burst(uint8_t dev_id, uint16_t qp_id,
842 struct rte_crypto_op **ops, uint16_t nb_ops)
844 struct rte_cryptodev *dev = &rte_cryptodevs[dev_id];
846 nb_ops = (*dev->dequeue_burst)
847 (dev->data->queue_pairs[qp_id], ops, nb_ops);
853 * Enqueue a burst of operations for processing on a crypto device.
855 * The rte_cryptodev_enqueue_burst() function is invoked to place
856 * crypto operations on the queue *qp_id* of the device designated by
859 * The *nb_ops* parameter is the number of operations to process which are
860 * supplied in the *ops* array of *rte_crypto_op* structures.
862 * The rte_cryptodev_enqueue_burst() function returns the number of
863 * operations it actually enqueued for processing. A return value equal to
864 * *nb_ops* means that all packets have been enqueued.
866 * @param dev_id The identifier of the device.
867 * @param qp_id The index of the queue pair which packets are
868 * to be enqueued for processing. The value
869 * must be in the range [0, nb_queue_pairs - 1]
870 * previously supplied to
871 * *rte_cryptodev_configure*.
872 * @param ops The address of an array of *nb_ops* pointers
873 * to *rte_crypto_op* structures which contain
874 * the crypto operations to be processed.
875 * @param nb_ops The number of operations to process.
878 * The number of operations actually enqueued on the crypto device. The return
879 * value can be less than the value of the *nb_ops* parameter when the
880 * crypto devices queue is full or if invalid parameters are specified in
883 static inline uint16_t
884 rte_cryptodev_enqueue_burst(uint8_t dev_id, uint16_t qp_id,
885 struct rte_crypto_op **ops, uint16_t nb_ops)
887 struct rte_cryptodev *dev = &rte_cryptodevs[dev_id];
889 return (*dev->enqueue_burst)(
890 dev->data->queue_pairs[qp_id], ops, nb_ops);
894 /** Cryptodev symmetric crypto session
895 * Each session is derived from a fixed xform chain. Therefore each session
896 * has a fixed algo, key, op-type, digest_len etc.
898 struct rte_cryptodev_sym_session {
899 __extension__ void *sess_private_data[0];
900 /**< Private session material */
905 * Create symmetric crypto session header (generic with no private data)
907 * @param mempool Symmetric session mempool to allocate session
910 * - On success return pointer to sym-session
911 * - On failure returns NULL
913 struct rte_cryptodev_sym_session *
914 rte_cryptodev_sym_session_create(struct rte_mempool *mempool);
917 * Frees symmetric crypto session header, after checking that all
918 * the device private data has been freed, returning it
919 * to its original mempool.
921 * @param sess Session header to be freed.
925 * - -EINVAL if session is NULL.
926 * - -EBUSY if not all device private data has been freed.
929 rte_cryptodev_sym_session_free(struct rte_cryptodev_sym_session *sess);
932 * Fill out private data for the device id, based on its device type.
934 * @param dev_id ID of device that we want the session to be used on
935 * @param sess Session where the private data will be attached to
936 * @param xforms Symmetric crypto transform operations to apply on flow
937 * processed with this session
938 * @param mempool Mempool where the private data is allocated.
941 * - On success, zero.
942 * - -EINVAL if input parameters are invalid.
943 * - -ENOTSUP if crypto device does not support the crypto transform.
944 * - -ENOMEM if the private session could not be allocated.
947 rte_cryptodev_sym_session_init(uint8_t dev_id,
948 struct rte_cryptodev_sym_session *sess,
949 struct rte_crypto_sym_xform *xforms,
950 struct rte_mempool *mempool);
953 * Frees private data for the device id, based on its device type,
954 * returning it to its mempool.
956 * @param dev_id ID of device that uses the session.
957 * @param sess Session containing the reference to the private data
961 * - -EINVAL if device is invalid or session is NULL.
964 rte_cryptodev_sym_session_clear(uint8_t dev_id,
965 struct rte_cryptodev_sym_session *sess);
968 * Get the size of the header session, for all registered drivers.
971 * Size of the header session.
974 rte_cryptodev_get_header_session_size(void);
977 * Get the size of the private session data for a device.
979 * @param dev_id The device identifier.
982 * - Size of the private data, if successful
983 * - 0 if device is invalid or does not have private session
986 rte_cryptodev_get_private_session_size(uint8_t dev_id);
989 * Attach queue pair with sym session.
991 * @param dev_id Device to which the session will be attached.
992 * @param qp_id Queue pair to which the session will be attached.
993 * @param session Session pointer previously allocated by
994 * *rte_cryptodev_sym_session_create*.
997 * - On success, zero.
998 * - On failure, a negative value.
1001 rte_cryptodev_queue_pair_attach_sym_session(uint8_t dev_id, uint16_t qp_id,
1002 struct rte_cryptodev_sym_session *session);
1005 * Detach queue pair with sym session.
1007 * @param dev_id Device to which the session is attached.
1008 * @param qp_id Queue pair to which the session is attached.
1009 * @param session Session pointer previously allocated by
1010 * *rte_cryptodev_sym_session_create*.
1013 * - On success, zero.
1014 * - On failure, a negative value.
1017 rte_cryptodev_queue_pair_detach_sym_session(uint8_t dev_id, uint16_t qp_id,
1018 struct rte_cryptodev_sym_session *session);
1021 * Provide driver identifier.
1024 * The pointer to a driver name.
1026 * The driver type identifier or -1 if no driver found
1028 int rte_cryptodev_driver_id_get(const char *name);
1031 * Provide driver name.
1034 * The driver identifier.
1036 * The driver name or null if no driver found
1038 const char *rte_cryptodev_driver_name_get(uint8_t driver_id);
1041 * Set private data for a session.
1043 * @param sess Session pointer allocated by
1044 * *rte_cryptodev_sym_session_create*.
1045 * @param data Pointer to the private data.
1046 * @param size Size of the private data.
1049 * - On success, zero.
1050 * - On failure, a negative value.
1052 int __rte_experimental
1053 rte_cryptodev_sym_session_set_private_data(
1054 struct rte_cryptodev_sym_session *sess,
1059 * Get private data of a session.
1061 * @param sess Session pointer allocated by
1062 * *rte_cryptodev_sym_session_create*.
1065 * - On success return pointer to private data.
1066 * - On failure returns NULL.
1068 void * __rte_experimental
1069 rte_cryptodev_sym_session_get_private_data(
1070 struct rte_cryptodev_sym_session *sess);
1076 #endif /* _RTE_CRYPTODEV_H_ */