linux/lib/crc32test.c

/*
 * Aug 8, 2011 Bob Pearson with help from Joakim Tjernlund and George Spelvin
 * cleaned up code to current version of sparse and added the slicing-by-8
 * algorithm to the closely similar existing slicing-by-4 algorithm.
 *
 * Oct 15, 2000 Matt Domsch <[email protected]>
 * Nicer crc32 functions/docs submitted by [email protected].  Thanks!
 * Code was from the public domain, copyright abandoned.  Code was
 * subsequently included in the kernel, thus was re-licensed under the
 * GNU GPL v2.
 *
 * Oct 12, 2000 Matt Domsch <[email protected]>
 * Same crc32 function was used in 5 other places in the kernel.
 * I made one version, and deleted the others.
 * There are various incantations of crc32().  Some use a seed of 0 or ~0.
 * Some xor at the end with ~0.  The generic crc32() function takes
 * seed as an argument, and doesn't xor at the end.  Then individual
 * users can do whatever they need.
 *   drivers/net/smc9194.c uses seed ~0, doesn't xor with ~0.
 *   fs/jffs2 uses seed 0, doesn't xor with ~0.
 *   fs/partitions/efi.c uses seed ~0, xor's with ~0.
 *
 * This source code is licensed under the GNU General Public License,
 * Version 2.  See the file COPYING for more details.
 */

#include <linux/crc32.h>
#include <linux/module.h>
#include <linux/sched.h>

#include "crc32defs.h"

/* 4096 random bytes */
static u8 const __aligned(8) test_buf[] __initconst = …;

/* 100 test cases */
static struct crc_test { … } const test[] __initconst = …;

#include <linux/time.h>

static int __init crc32c_test(void)
{ … }

static int __init crc32c_combine_test(void)
{ … }

static int __init crc32_test(void)
{ … }

static int __init crc32_combine_test(void)
{ … }

static int __init crc32test_init(void)
{ … }

static void __exit crc32_exit(void)
{ … }

module_init(…) …;
module_exit(crc32_exit);

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