linux-imx

/* Common header for Virtio crypto device.

 *

 * Copyright 2016 HUAWEI TECHNOLOGIES CO., LTD.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, see <http://www.gnu.org/licenses/>.

 */

​

#ifndef _VIRTIO_CRYPTO_COMMON_H

#define _VIRTIO_CRYPTO_COMMON_H

​

#include <linux/virtio.h>

#include <linux/crypto.h>

#include <linux/spinlock.h>

#include <crypto/aead.h>

#include <crypto/aes.h>

#include <crypto/engine.h>

​

​

/* Internal representation of a data virtqueue */

struct data_queue {

    /* Virtqueue associated with this send _queue */

    struct virtqueue *vq;

​

    /* To protect the vq operations for the dataq */

    spinlock_t lock;

​

    /* Name of the tx queue: dataq.$index */

    char name[32];

​

    struct crypto_engine *engine;

};

​

struct virtio_crypto {

    struct virtio_device *vdev;

    struct virtqueue *ctrl_vq;

    struct data_queue *data_vq;

​

    /* To protect the vq operations for the controlq */

    spinlock_t ctrl_lock;

​

    /* Maximum of data queues supported by the device */

    u32 max_data_queues;

​

    /* Number of queue currently used by the driver */

    u32 curr_queue;

​

    /*

     * Specifies the services mask which the device support,

     * see VIRTIO_CRYPTO_SERVICE_*

     */

    u32 crypto_services;

​