1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef CEPH_CRUSH_HASH_H
3 #define CEPH_CRUSH_HASH_H
4 
5 #ifdef __KERNEL__
6 # include <linux/types.h>
7 #else
8 # include "crush_compat.h"
9 #endif
10 
11 #define CRUSH_HASH_RJENKINS1   0
12 
13 #define CRUSH_HASH_DEFAULT CRUSH_HASH_RJENKINS1
14 
15 extern const char *crush_hash_name(int type);
16 
17 extern __u32 crush_hash32(int type, __u32 a);
18 extern __u32 crush_hash32_2(int type, __u32 a, __u32 b);
19 extern __u32 crush_hash32_3(int type, __u32 a, __u32 b, __u32 c);
20 extern __u32 crush_hash32_4(int type, __u32 a, __u32 b, __u32 c, __u32 d);
21 extern __u32 crush_hash32_5(int type, __u32 a, __u32 b, __u32 c, __u32 d,
22 			    __u32 e);
23 
24 #endif
25