include/zfs/zio_checksum.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 1999,2000,2001,2002,2003,2004  Free Software Foundation, Inc.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7 /*
   8  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
   9  * Use is subject to license terms.
  10  */
  11
  12 #ifndef _SYS_ZIO_CHECKSUM_H
  13 #define _SYS_ZIO_CHECKSUM_H
  14
  15 /*
  16  * Signature for checksum functions.
  17  */
  18 typedef void zio_checksum_t(const void *data, uint64_t size,
  19                             zfs_endian_t endian, zio_cksum_t *zcp);
  20
  21 /*
  22  * Information about each checksum function.
  23  */
  24 typedef struct zio_checksum_info {
  25         zio_checksum_t  *ci_func; /* checksum function for each byteorder */
  26         int             ci_correctable; /* number of correctable bits   */
  27         int             ci_eck;         /* uses zio embedded checksum? */
  28         char            *ci_name;       /* descriptive name */
  29 } zio_checksum_info_t;
  30
  31 extern void zio_checksum_SHA256(const void *, uint64_t,
  32                                  zfs_endian_t endian, zio_cksum_t *);
  33 extern void fletcher_2_endian(const void *, uint64_t, zfs_endian_t endian,
  34                         zio_cksum_t *);
  35 extern void fletcher_4_endian(const void *, uint64_t, zfs_endian_t endian,
  36                         zio_cksum_t *);
  37
  38 #endif  /* _SYS_ZIO_CHECKSUM_H */