4185 New hash algorithm support

*** 18,27 ****
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright Saso Kiselkov 2013, All rights reserved.
   */
  
  #ifndef _SYS_ZIO_CHECKSUM_H
  #define _SYS_ZIO_CHECKSUM_H
  
*** 32,51 ****
  #endif
  
  /*
   * Signature for checksum functions.
   */
! typedef void zio_checksum_t(const void *data, uint64_t size, zio_cksum_t *zcp);
  
  /*
   * Information about each checksum function.
   */
  typedef struct zio_checksum_info {
!         zio_checksum_t  *ci_func[2]; /* checksum function for each byteorder */
          int             ci_correctable; /* number of correctable bits   */
          int             ci_eck;         /* uses zio embedded checksum? */
          int             ci_dedup;       /* strong enough for dedup? */
          char            *ci_name;       /* descriptive name */
  } zio_checksum_info_t;
  
  typedef struct zio_bad_cksum {
          zio_cksum_t             zbc_expected;
--- 33,59 ----
  #endif
  
  /*
   * Signature for checksum functions.
   */
! typedef void zio_checksum_t(const void *data, uint64_t size,
!     const zio_cksum_salt_t *salt, const void *ctx_template, zio_cksum_t *zcp);
! typedef void *zio_checksum_tmpl_init_t(const zio_cksum_salt_t *salt);
! typedef void zio_checksum_tmpl_free_t(void *ctx_template);
  
  /*
   * Information about each checksum function.
   */
  typedef struct zio_checksum_info {
!         /* checksum function for each byteorder */
!         zio_checksum_t                  *ci_func[2];
!         zio_checksum_tmpl_init_t        *ci_tmpl_init;
!         zio_checksum_tmpl_free_t        *ci_tmpl_free;
          int             ci_correctable; /* number of correctable bits */
          int             ci_eck;         /* uses zio embedded checksum? */
          int             ci_dedup;       /* strong enough for dedup? */
+         int             ci_salted;      /* does the checksum support salts */
          char            *ci_name;       /* descriptive name */
  } zio_checksum_info_t;
  
  typedef struct zio_bad_cksum {
          zio_cksum_t             zbc_expected;
*** 60,74 ****
--- 68,97 ----
  
  /*
   * Checksum routines.
   */
  extern zio_checksum_t zio_checksum_SHA256;
+ extern zio_checksum_t zio_checksum_SHA512_native;
+ extern zio_checksum_t zio_checksum_SHA512_byteswap;
  
+ /* Skein */
+ extern zio_checksum_t zio_checksum_skein_native;
+ extern zio_checksum_t zio_checksum_skein_byteswap;
+ extern zio_checksum_tmpl_init_t zio_checksum_skein_tmpl_init;
+ extern zio_checksum_tmpl_free_t zio_checksum_skein_tmpl_free;
+ 
+ /* Edon-R */
+ extern zio_checksum_t zio_checksum_edonr_native;
+ extern zio_checksum_t zio_checksum_edonr_byteswap;
+ extern zio_checksum_tmpl_init_t zio_checksum_edonr_tmpl_init;
+ extern zio_checksum_tmpl_free_t zio_checksum_edonr_tmpl_free;
+ 
  extern void zio_checksum_compute(zio_t *zio, enum zio_checksum checksum,
      void *data, uint64_t size);
  extern int zio_checksum_error(zio_t *zio, zio_bad_cksum_t *out);
  extern enum zio_checksum spa_dedup_checksum(spa_t *spa);
+ extern void zio_checksum_templates_free(spa_t *spa);
  
  #ifdef  __cplusplus
  }
  #endif