| /* General purpose hashing library |
| * |
| * That's a start of a kernel hashing library, which can be extended |
| * with further algorithms in future. arch_fast_hash{2,}() will |
| * eventually resolve to an architecture optimized implementation. |
| * |
| * Copyright 2013 Francesco Fusco <ffusco@redhat.com> |
| * Copyright 2013 Daniel Borkmann <dborkman@redhat.com> |
| * Copyright 2013 Thomas Graf <tgraf@redhat.com> |
| * Licensed under the GNU General Public License, version 2.0 (GPLv2) |
| */ |
| |
| #include <linux/jhash.h> |
| #include <linux/hash.h> |
| #include <linux/cache.h> |
| |
| static struct fast_hash_ops arch_hash_ops __read_mostly = { |
| .hash = jhash, |
| .hash2 = jhash2, |
| }; |
| |
| u32 arch_fast_hash(const void *data, u32 len, u32 seed) |
| { |
| return arch_hash_ops.hash(data, len, seed); |
| } |
| EXPORT_SYMBOL_GPL(arch_fast_hash); |
| |
| u32 arch_fast_hash2(const u32 *data, u32 len, u32 seed) |
| { |
| return arch_hash_ops.hash2(data, len, seed); |
| } |
| EXPORT_SYMBOL_GPL(arch_fast_hash2); |
| |
| static int __init hashlib_init(void) |
| { |
| setup_arch_fast_hash(&arch_hash_ops); |
| return 0; |
| } |
| early_initcall(hashlib_init); |
