Imported upstream release 16.04

* gbp import-orig ../dpdk-16.04.tar.xz

Change-Id: Iac2196db782ba322f6974d8a752acc34ce5024c3
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 896 insertions, 0 deletions

diff --git a/lib/librte_cryptodev/rte_cryptodev.h b/lib/librte_cryptodev/rte_cryptodev.h
new file mode 100644
index 00000000..d47f1e87
--- /dev/null
+++ b/lib/librte_cryptodev/rte_cryptodev.h
@@ -0,0 +1,896 @@
+/*-
+ *
+ *   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"
+
+#define CRYPTODEV_NAME_NULL_PMD		("cryptodev_null_pmd")
+/**< Null crypto PMD device name */
+#define CRYPTODEV_NAME_AESNI_MB_PMD	("cryptodev_aesni_mb_pmd")
+/**< AES-NI Multi buffer PMD device name */
+#define CRYPTODEV_NAME_AESNI_GCM_PMD	("cryptodev_aesni_gcm_pmd")
+/**< AES-NI GCM PMD device name */
+#define CRYPTODEV_NAME_QAT_SYM_PMD	("cryptodev_qat_sym_pmd")
+/**< Intel QAT Symmetric Crypto PMD device name */
+#define CRYPTODEV_NAME_SNOW3G_PMD	("cryptodev_snow3g_pmd")
+/**< SNOW 3G 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 */
+};
+
+extern const char **rte_cyptodev_names;
+
+/* Logging Macros */
+
+#define CDEV_LOG_ERR(fmt, args...)					\
+		RTE_LOG(ERR, CRYPTODEV, "%s() line %u: " fmt "\n",	\
+				__func__, __LINE__, ## args)
+
+#define CDEV_PMD_LOG_ERR(dev, fmt, args...)				\
+		RTE_LOG(ERR, CRYPTODEV, "[%s] %s() line %u: " fmt "\n", \
+				dev, __func__, __LINE__, ## args)
+
+#ifdef RTE_LIBRTE_CRYPTODEV_DEBUG
+#define CDEV_LOG_DEBUG(fmt, args...)					\
+		RTE_LOG(DEBUG, CRYPTODEV, "%s() line %u: " fmt "\n",	\
+				__func__, __LINE__, ## args)		\
+
+#define CDEV_PMD_TRACE(fmt, args...)					\
+		RTE_LOG(DEBUG, CRYPTODEV, "[%s] %s: " fmt "\n",		\
+				dev, __func__, ## args)
+
+#else
+#define CDEV_LOG_DEBUG(fmt, args...)
+#define CDEV_PMD_TRACE(fmt, args...)
+#endif
+
+/**
+ * Symmetric Crypto Capability
+ */
+struct rte_cryptodev_symmetric_capability {
+	enum rte_crypto_sym_xform_type xform_type;
+	/**< Transform type : Authentication / Cipher */
+	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 */
+
+	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;
+};
+
+#define RTE_CRYPTODEV_VDEV_MAX_NB_QP_ARG		("max_nb_queue_pairs")
+#define RTE_CRYPTODEV_VDEV_MAX_NB_SESS_ARG		("max_nb_sessions")
+#define RTE_CRYPTODEV_VDEV_SOCKET_ID			("socket_id")
+
+static const char *cryptodev_vdev_valid_params[] = {
+	RTE_CRYPTODEV_VDEV_MAX_NB_QP_ARG,
+	RTE_CRYPTODEV_VDEV_MAX_NB_SESS_ARG,
+	RTE_CRYPTODEV_VDEV_SOCKET_ID
+};
+
+static inline uint8_t
+number_of_sockets(void)
+{
+	int sockets = 0;
+	int i;
+	const struct rte_memseg *ms = rte_eal_get_physmem_layout();
+
+	for (i = 0; ((i < RTE_MAX_MEMSEG) && (ms[i].addr != NULL)); i++) {
+		if (sockets < ms[i].socket_id)
+			sockets = ms[i].socket_id;
+	}
+
+	/* Number of sockets = maximum socket_id + 1 */
+	return ++sockets;
+}
+
+/** Parse integer from integer argument */
+static inline int
+__rte_cryptodev_parse_integer_arg(const char *key __rte_unused,
+		const char *value, void *extra_args)
+{
+	int *i = (int *) extra_args;
+
+	*i = atoi(value);
+	if (*i < 0) {
+		CDEV_LOG_ERR("Argument has to be positive.");
+		return -1;
+	}
+
+	return 0;
+}
+
+/**
+ * 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
+ */
+static inline int
+rte_cryptodev_parse_vdev_init_params(struct rte_crypto_vdev_init_params *params,
+		const char *input_args)
+{
+	struct rte_kvargs *kvlist;
+	int ret;
+
+	if (params == NULL)
+		return -EINVAL;
+
+	if (input_args) {
+		kvlist = rte_kvargs_parse(input_args,
+				cryptodev_vdev_valid_params);
+		if (kvlist == NULL)
+			return -1;
+
+		ret = rte_kvargs_process(kvlist,
+					RTE_CRYPTODEV_VDEV_MAX_NB_QP_ARG,
+					&__rte_cryptodev_parse_integer_arg,
+					&params->max_nb_queue_pairs);
+		if (ret < 0)
+			goto free_kvlist;
+
+		ret = rte_kvargs_process(kvlist,
+					RTE_CRYPTODEV_VDEV_MAX_NB_SESS_ARG,
+					&__rte_cryptodev_parse_integer_arg,
+					&params->max_nb_sessions);
+		if (ret < 0)
+			goto free_kvlist;
+
+		ret = rte_kvargs_process(kvlist, RTE_CRYPTODEV_VDEV_SOCKET_ID,
+					&__rte_cryptodev_parse_integer_arg,
+					&params->socket_id);
+		if (ret < 0)
+			goto free_kvlist;
+
+		if (params->socket_id >= number_of_sockets()) {
+			CDEV_LOG_ERR("Invalid socket id specified to create "
+				"the virtual crypto device on");
+			goto free_kvlist;
+		}
+	}
+
+	return 0;
+
+free_kvlist:
+	rte_kvargs_free(kvlist);
+	return ret;
+}
+
+/**
+ * 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 */
+	enum pmd_type pmd_type;
+	/**< PMD type - PDEV / VDEV */
+
+	struct rte_cryptodev_cb_list link_intr_cbs;
+	/**< User application callback for interrupts if present */
+
+	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 */
+
+	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 {
+	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 */
+
+	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_ */