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