rte_cryptodev_pmd.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2015-2020 Intel Corporation.
 */

#ifndef _RTE_CRYPTODEV_PMD_H_
#define _RTE_CRYPTODEV_PMD_H_

#ifdef __cplusplus
extern "C" {
#endif

#include <string.h>

#include <rte_config.h>
#include <rte_dev.h>
#include <rte_malloc.h>
#include <rte_mbuf.h>
#include <rte_mempool.h>
#include <rte_log.h>
#include <rte_common.h>

#include "rte_crypto.h"
#include "rte_cryptodev.h"


#define RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS    8

#define RTE_CRYPTODEV_PMD_NAME_ARG          ("name")
#define RTE_CRYPTODEV_PMD_MAX_NB_QP_ARG         ("max_nb_queue_pairs")
#define RTE_CRYPTODEV_PMD_SOCKET_ID_ARG         ("socket_id")


static const char * const cryptodev_pmd_valid_params[] = {
    RTE_CRYPTODEV_PMD_NAME_ARG,
    RTE_CRYPTODEV_PMD_MAX_NB_QP_ARG,
    RTE_CRYPTODEV_PMD_SOCKET_ID_ARG
};

struct rte_cryptodev_pmd_init_params {
    char name[RTE_CRYPTODEV_NAME_MAX_LEN];
    size_t private_data_size;
    int socket_id;
    unsigned int max_nb_queue_pairs;
};

struct rte_cryptodev_global {
    struct rte_cryptodev *devs; 
    struct rte_cryptodev_data *data[RTE_CRYPTO_MAX_DEVS];
    uint8_t nb_devs;        
};

/* Cryptodev driver, containing the driver ID */
struct cryptodev_driver {
    TAILQ_ENTRY(cryptodev_driver) next; 
    const struct rte_driver *driver;
    uint8_t id;
};

struct rte_cryptodev *
rte_cryptodev_pmd_get_dev(uint8_t dev_id);

struct rte_cryptodev *
rte_cryptodev_pmd_get_named_dev(const char *name);

unsigned int
rte_cryptodev_pmd_is_valid_dev(uint8_t dev_id);

extern struct rte_cryptodev *rte_cryptodevs;


typedef int (*cryptodev_configure_t)(struct rte_cryptodev *dev,
        struct rte_cryptodev_config *config);

typedef int (*cryptodev_start_t)(struct rte_cryptodev *dev);

typedef void (*cryptodev_stop_t)(struct rte_cryptodev *dev);

typedef int (*cryptodev_close_t)(struct rte_cryptodev *dev);


typedef void (*cryptodev_stats_get_t)(struct rte_cryptodev *dev,
                struct rte_cryptodev_stats *stats);


typedef void (*cryptodev_stats_reset_t)(struct rte_cryptodev *dev);


typedef void (*cryptodev_info_get_t)(struct rte_cryptodev *dev,
                struct rte_cryptodev_info *dev_info);

typedef int (*cryptodev_queue_pair_setup_t)(struct rte_cryptodev *dev,
        uint16_t qp_id, const struct rte_cryptodev_qp_conf *qp_conf,
        int socket_id);

typedef int (*cryptodev_queue_pair_release_t)(struct rte_cryptodev *dev,
        uint16_t qp_id);

typedef int (*cryptodev_sym_create_session_pool_t)(
        struct rte_cryptodev *dev, unsigned nb_objs,
        unsigned obj_cache_size, int socket_id);


typedef unsigned (*cryptodev_sym_get_session_private_size_t)(
        struct rte_cryptodev *dev);
typedef unsigned int (*cryptodev_asym_get_session_private_size_t)(
        struct rte_cryptodev *dev);

typedef int (*cryptodev_sym_configure_session_t)(struct rte_cryptodev *dev,
        struct rte_crypto_sym_xform *xform,
        struct rte_cryptodev_sym_session *session,
        struct rte_mempool *mp);
typedef int (*cryptodev_asym_configure_session_t)(struct rte_cryptodev *dev,
        struct rte_crypto_asym_xform *xform,
        struct rte_cryptodev_asym_session *session,
        struct rte_mempool *mp);
typedef void (*cryptodev_sym_free_session_t)(struct rte_cryptodev *dev,
        struct rte_cryptodev_sym_session *sess);
typedef void (*cryptodev_asym_free_session_t)(struct rte_cryptodev *dev,
        struct rte_cryptodev_asym_session *sess);
typedef uint32_t (*cryptodev_sym_cpu_crypto_process_t)
    (struct rte_cryptodev *dev, struct rte_cryptodev_sym_session *sess,
    union rte_crypto_sym_ofs ofs, struct rte_crypto_sym_vec *vec);


struct rte_cryptodev_ops {
    cryptodev_configure_t dev_configure;    
    cryptodev_start_t dev_start;        
    cryptodev_stop_t dev_stop;      
    cryptodev_close_t dev_close;        
    cryptodev_info_get_t dev_infos_get; 
    cryptodev_stats_get_t stats_get;
    cryptodev_stats_reset_t stats_reset;
    cryptodev_queue_pair_setup_t queue_pair_setup;
    cryptodev_queue_pair_release_t queue_pair_release;
    cryptodev_sym_get_session_private_size_t sym_session_get_size;
    cryptodev_asym_get_session_private_size_t asym_session_get_size;
    cryptodev_sym_configure_session_t sym_session_configure;
    cryptodev_asym_configure_session_t asym_session_configure;
    cryptodev_sym_free_session_t sym_session_clear;
    cryptodev_asym_free_session_t asym_session_clear;
    cryptodev_sym_cpu_crypto_process_t sym_cpu_process;
};


struct rte_cryptodev *
rte_cryptodev_pmd_allocate(const char *name, int socket_id);

extern int
rte_cryptodev_pmd_release_device(struct rte_cryptodev *cryptodev);


int
rte_cryptodev_pmd_parse_input_args(
        struct rte_cryptodev_pmd_init_params *params,
        const char *args);

struct rte_cryptodev *
rte_cryptodev_pmd_create(const char *name,
        struct rte_device *device,
        struct rte_cryptodev_pmd_init_params *params);

int
rte_cryptodev_pmd_destroy(struct rte_cryptodev *cryptodev);

void rte_cryptodev_pmd_callback_process(struct rte_cryptodev *dev,
                enum rte_cryptodev_event_type event);

int
rte_cryptodev_pmd_create_dev_name(char *name, const char *dev_name_prefix);

uint8_t rte_cryptodev_allocate_driver(struct cryptodev_driver *crypto_drv,
        const struct rte_driver *drv);


#define RTE_PMD_REGISTER_CRYPTO_DRIVER(crypto_drv, drv, driver_id)\
RTE_INIT(init_ ##driver_id)\
{\
    driver_id = rte_cryptodev_allocate_driver(&crypto_drv, &(drv));\
}

static inline void *
get_sym_session_private_data(const struct rte_cryptodev_sym_session *sess,
        uint8_t driver_id) {
    if (unlikely(sess->nb_drivers <= driver_id))
        return NULL;

    return sess->sess_data[driver_id].data;
}

static inline void
set_sym_session_private_data(struct rte_cryptodev_sym_session *sess,
        uint8_t driver_id, void *private_data)
{
    if (unlikely(sess->nb_drivers <= driver_id)) {
        CDEV_LOG_ERR("Set private data for driver %u not allowed\n",
                driver_id);
        return;
    }

    sess->sess_data[driver_id].data = private_data;
}

static inline void *
get_asym_session_private_data(const struct rte_cryptodev_asym_session *sess,
        uint8_t driver_id) {
    return sess->sess_private_data[driver_id];
}

static inline void
set_asym_session_private_data(struct rte_cryptodev_asym_session *sess,
        uint8_t driver_id, void *private_data)
{
    sess->sess_private_data[driver_id] = private_data;
}

#ifdef __cplusplus
}
#endif

#endif /* _RTE_CRYPTODEV_PMD_H_ */