examples/ip_pipeline/cryptodev.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2018 Intel Corporation
 */

#include <stdlib.h>
#include <stdio.h>

#include <rte_cryptodev.h>
#include <rte_cryptodev_pmd.h>
#include <rte_string_fns.h>

#include "cryptodev.h"

static struct cryptodev_list cryptodev_list;

int
cryptodev_init(void)
{
    TAILQ_INIT(&cryptodev_list);

    return 0;
}

struct cryptodev *
cryptodev_find(const char *name)
{
    struct cryptodev *cryptodev;

    if (name == NULL)
        return NULL;

    TAILQ_FOREACH(cryptodev, &cryptodev_list, node)
        if (strcmp(cryptodev->name, name) == 0)
            return cryptodev;

    return NULL;
}

struct cryptodev *
cryptodev_next(struct cryptodev *cryptodev)
{
    return (cryptodev == NULL) ?
            TAILQ_FIRST(&cryptodev_list) :
            TAILQ_NEXT(cryptodev, node);
}

struct cryptodev *
cryptodev_create(const char *name, struct cryptodev_params *params)
{
    struct rte_cryptodev_info dev_info;
    struct rte_cryptodev_config dev_conf;
    struct rte_cryptodev_qp_conf queue_conf;
    struct cryptodev *cryptodev;
    uint32_t dev_id, i;
    uint32_t socket_id;
    int status;

    /* Check input params */
    if ((name == NULL) ||
        cryptodev_find(name) ||
        (params->n_queues == 0) ||
        (params->queue_size == 0))
        return NULL;

    if (params->dev_name) {
        status = rte_cryptodev_get_dev_id(params->dev_name);
        if (status == -1)
            return NULL;

        dev_id = (uint32_t)status;
    } else {
        if (rte_cryptodev_pmd_is_valid_dev(params->dev_id) == 0)
            return NULL;

        dev_id = params->dev_id;
    }

    socket_id = rte_cryptodev_socket_id(dev_id);
    rte_cryptodev_info_get(dev_id, &dev_info);

    if (dev_info.max_nb_queue_pairs < params->n_queues)
        return NULL;
    if (dev_info.feature_flags & RTE_CRYPTODEV_FF_HW_ACCELERATED)
        return NULL;

    dev_conf.socket_id = socket_id;
    dev_conf.nb_queue_pairs = params->n_queues;

    status = rte_cryptodev_configure(dev_id, &dev_conf);
    if (status < 0)
        return NULL;

    queue_conf.nb_descriptors = params->queue_size;
    for (i = 0; i < params->n_queues; i++) {
        status = rte_cryptodev_queue_pair_setup(dev_id, i,
                &queue_conf, socket_id, NULL);
        if (status < 0)
            return NULL;
    }

    if (rte_cryptodev_start(dev_id) < 0)
        return NULL;

    cryptodev = calloc(1, sizeof(struct cryptodev));
    if (cryptodev == NULL) {
        rte_cryptodev_stop(dev_id);
        return NULL;
    }

    strlcpy(cryptodev->name, name, sizeof(cryptodev->name));
    cryptodev->dev_id = dev_id;
    cryptodev->n_queues = params->n_queues;

    TAILQ_INSERT_TAIL(&cryptodev_list, cryptodev, node);

    return cryptodev;
}