1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2013 Saso Kiselkov.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25 #include <sys/zfs_context.h>
  26 #include <sys/zio.h>
  27 #include <sys/edonr.h>
  28 
  29 /*
  30  * zio_checksum interface for the Edon-R hash function
  31  */
  32 void
  33 zio_checksum_EdonR512_256(const void *buf, uint64_t size, zio_cksum_t *zcp)
  34 {
  35         uint8_t hash[EdonR512_DIGEST_SIZE];
  36 
  37         EdonRHash(512, buf, size * 8, hash);
  38         bcopy(&hash[000], &zcp->zc_word[0], sizeof (zcp->zc_word[0]));
  39         bcopy(&hash[010], &zcp->zc_word[1], sizeof (zcp->zc_word[0]));
  40         bcopy(&hash[020], &zcp->zc_word[2], sizeof (zcp->zc_word[0]));
  41         bcopy(&hash[030], &zcp->zc_word[3], sizeof (zcp->zc_word[0]));
  42 }
  43 
  44 void
  45 zio_checksum_EdonR512_256_byteswap(const void *buf, uint64_t size,
  46     zio_cksum_t *zcp)
  47 {
  48         zio_checksum_EdonR512_256(buf, size, zcp);
  49         zcp->zc_word[0] = BSWAP_64(zcp->zc_word[0]);
  50         zcp->zc_word[1] = BSWAP_64(zcp->zc_word[1]);
  51         zcp->zc_word[2] = BSWAP_64(zcp->zc_word[2]);
  52         zcp->zc_word[3] = BSWAP_64(zcp->zc_word[3]);
  53 }