include/linux/crush/hash.h

   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