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.
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.
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]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2014 by Delphix. All rights reserved.
26 #ifndef _SYS_ZIO_CHECKSUM_H
27 #define _SYS_ZIO_CHECKSUM_H
36 * Signature for checksum functions.
38 typedef void zio_checksum_func_t(const void *, uint64_t, zio_cksum_t *);
41 * Information about each checksum function.
43 typedef struct zio_checksum_info {
44 zio_checksum_func_t *ci_func[2]; /* checksum function per byteorder */
45 int ci_correctable; /* number of correctable bits */
46 int ci_eck; /* uses zio embedded checksum? */
47 boolean_t ci_dedup; /* strong enough for dedup? */
48 char *ci_name; /* descriptive name */
49 } zio_checksum_info_t;
51 typedef struct zio_bad_cksum {
52 zio_cksum_t zbc_expected;
53 zio_cksum_t zbc_actual;
54 const char *zbc_checksum_name;
55 uint8_t zbc_byteswapped;
57 uint8_t zbc_has_cksum; /* expected/actual valid */
60 extern zio_checksum_info_t zio_checksum_table[ZIO_CHECKSUM_FUNCTIONS];
65 extern zio_checksum_func_t zio_checksum_SHA256;
67 extern void zio_checksum_compute(zio_t *zio, enum zio_checksum checksum,
68 void *data, uint64_t size);
69 extern int zio_checksum_error(zio_t *zio, zio_bad_cksum_t *out);
70 extern enum zio_checksum spa_dedup_checksum(spa_t *spa);
76 #endif /* _SYS_ZIO_CHECKSUM_H */