linux-imx

 /* Algorithms supported by virtio crypto device

  *

  * Authors: Gonglei <arei.gonglei@huawei.com>

  *

  * 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/>.

  */

​

#include <linux/scatterlist.h>

#include <crypto/algapi.h>

#include <linux/err.h>

#include <crypto/scatterwalk.h>

#include <linux/atomic.h>

​

#include <uapi/linux/virtio_crypto.h>

#include "virtio_crypto_common.h"

​

​

struct virtio_crypto_ablkcipher_ctx {

    struct crypto_engine_ctx enginectx;

    struct virtio_crypto *vcrypto;

    struct crypto_tfm *tfm;

​

    struct virtio_crypto_sym_session_info enc_sess_info;

    struct virtio_crypto_sym_session_info dec_sess_info;

};

​

struct virtio_crypto_sym_request {

    struct virtio_crypto_request base;

​

    /* Cipher or aead */

    uint32_t type;

    struct virtio_crypto_ablkcipher_ctx *ablkcipher_ctx;

    struct ablkcipher_request *ablkcipher_req;

    uint8_t *iv;

    /* Encryption? */

    bool encrypt;

};

​

struct virtio_crypto_algo {

    uint32_t algonum;

    uint32_t service;

    unsigned int active_devs;

    struct crypto_alg algo;

};

​

/*

 * The algs_lock protects the below global virtio_crypto_active_devs

 * and crypto algorithms registion.

 */

static DEFINE_MUTEX(algs_lock);