1/* General purpose hashing library
 2 *
 3 * That's a start of a kernel hashing library, which can be extended
 4 * with further algorithms in future. arch_fast_hash{2,}() will
 5 * eventually resolve to an architecture optimized implementation.
 6 *
 7 * Copyright 2013 Francesco Fusco <ffusco@redhat.com>
 8 * Copyright 2013 Daniel Borkmann <dborkman@redhat.com>
 9 * Copyright 2013 Thomas Graf <tgraf@redhat.com>
10 * Licensed under the GNU General Public License, version 2.0 (GPLv2)
11 */
12
13#include <linux/jhash.h>
14#include <linux/hash.h>
15#include <linux/cache.h>
16
17static struct fast_hash_ops arch_hash_ops __read_mostly = {
18	.hash  = jhash,
19	.hash2 = jhash2,
20};
21
22u32 arch_fast_hash(const void *data, u32 len, u32 seed)
23{
24	return arch_hash_ops.hash(data, len, seed);
25}
26EXPORT_SYMBOL_GPL(arch_fast_hash);
27
28u32 arch_fast_hash2(const u32 *data, u32 len, u32 seed)
29{
30	return arch_hash_ops.hash2(data, len, seed);
31}
32EXPORT_SYMBOL_GPL(arch_fast_hash2);
33
34static int __init hashlib_init(void)
35{
36	setup_arch_fast_hash(&arch_hash_ops);
37	return 0;
38}
39early_initcall(hashlib_init);