linux/crypto/crct10dif_generic.c

/*
 * Cryptographic API.
 *
 * T10 Data Integrity Field CRC16 Crypto Transform
 *
 * Copyright (c) 2007 Oracle Corporation.  All rights reserved.
 * Written by Martin K. Petersen <[email protected]>
 * Copyright (C) 2013 Intel Corporation
 * Author: Tim Chen <[email protected]>
 *
 * 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.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#include <linux/module.h>
#include <linux/crc-t10dif.h>
#include <crypto/internal/hash.h>
#include <linux/init.h>
#include <linux/kernel.h>

struct chksum_desc_ctx { … };

/*
 * Steps through buffer one byte at a time, calculates reflected
 * crc using table.
 */

static int chksum_init(struct shash_desc *desc)
{ … }

static int chksum_update(struct shash_desc *desc, const u8 *data,
			 unsigned int length)
{ … }

static int chksum_final(struct shash_desc *desc, u8 *out)
{ … }

static int __chksum_finup(__u16 crc, const u8 *data, unsigned int len, u8 *out)
{ … }

static int chksum_finup(struct shash_desc *desc, const u8 *data,
			unsigned int len, u8 *out)
{ … }

static int chksum_digest(struct shash_desc *desc, const u8 *data,
			 unsigned int length, u8 *out)
{ … }

static struct shash_alg alg = …;

static int __init crct10dif_mod_init(void)
{ … }

static void __exit crct10dif_mod_fini(void)
{ … }

subsys_initcall(crct10dif_mod_init);
module_exit(crct10dif_mod_fini);

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_ALIAS_CRYPTO(…) …;
MODULE_ALIAS_CRYPTO(…) …;