linux-imx

/*

 * Software async crypto daemon.

 *

 * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>

 *

 * Added AEAD support to cryptd.

 *    Authors: Tadeusz Struk (tadeusz.struk@intel.com)

 *             Adrian Hoban <adrian.hoban@intel.com>

 *             Gabriele Paoloni <gabriele.paoloni@intel.com>

 *             Aidan O'Mahony (aidan.o.mahony@intel.com)

 *    Copyright (c) 2010, Intel Corporation.

 *

 * 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.

 *

 */

​

#include <crypto/internal/hash.h>

#include <crypto/internal/aead.h>

#include <crypto/internal/skcipher.h>

#include <crypto/cryptd.h>

#include <crypto/crypto_wq.h>

#include <linux/atomic.h>

#include <linux/err.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/list.h>

#include <linux/module.h>

#include <linux/scatterlist.h>

#include <linux/sched.h>

#include <linux/slab.h>

​

static unsigned int cryptd_max_cpu_qlen = 1000;

module_param(cryptd_max_cpu_qlen, uint, 0);

MODULE_PARM_DESC(cryptd_max_cpu_qlen, "Set cryptd Max queue depth");

​

struct cryptd_cpu_queue {

    struct crypto_queue queue;

    struct work_struct work;

};

​

struct cryptd_queue {

    struct cryptd_cpu_queue __percpu *cpu_queue;

};

​

struct cryptd_instance_ctx {

    struct crypto_spawn spawn;

    struct cryptd_queue *queue;

};

​

struct skcipherd_instance_ctx {

    struct crypto_skcipher_spawn spawn;

    struct cryptd_queue *queue;

};

​

struct hashd_instance_ctx {

    struct crypto_shash_spawn spawn;

    struct cryptd_queue *queue;

};

​

struct aead_instance_ctx {

    struct crypto_aead_spawn aead_spawn;

    struct cryptd_queue *queue;

};

​

struct cryptd_blkcipher_ctx {

    atomic_t refcnt;

    struct crypto_blkcipher *child;

};

​

struct cryptd_blkcipher_request_ctx {

    crypto_completion_t complete;

};

​

struct cryptd_skcipher_ctx {

    atomic_t refcnt;

    struct crypto_sync_skcipher *child;

};

​

struct cryptd_skcipher_request_ctx {

    crypto_completion_t complete;

};

​

struct cryptd_hash_ctx {

    atomic_t refcnt;

    struct crypto_shash *child;

};

​

struct cryptd_hash_request_ctx {

    crypto_completion_t complete;