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34dc7c2f BB |
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 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
37f8a883 | 23 | * Copyright (c) 2014 by Delphix. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
26 | #ifndef _SYS_ZIO_CHECKSUM_H | |
27 | #define _SYS_ZIO_CHECKSUM_H | |
28 | ||
34dc7c2f BB |
29 | #include <sys/zio.h> |
30 | ||
31 | #ifdef __cplusplus | |
32 | extern "C" { | |
33 | #endif | |
34 | ||
35 | /* | |
36 | * Signature for checksum functions. | |
37 | */ | |
37f8a883 | 38 | typedef void zio_checksum_func_t(const void *, uint64_t, zio_cksum_t *); |
34dc7c2f BB |
39 | |
40 | /* | |
41 | * Information about each checksum function. | |
42 | */ | |
b01615d5 | 43 | typedef const struct zio_checksum_info { |
37f8a883 | 44 | zio_checksum_func_t *ci_func[2]; /* checksum function per byteorder */ |
34dc7c2f | 45 | int ci_correctable; /* number of correctable bits */ |
428870ff | 46 | int ci_eck; /* uses zio embedded checksum? */ |
fcff0f35 | 47 | boolean_t ci_dedup; /* strong enough for dedup? */ |
34dc7c2f BB |
48 | char *ci_name; /* descriptive name */ |
49 | } zio_checksum_info_t; | |
50 | ||
428870ff BB |
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; | |
56 | uint8_t zbc_injected; | |
57 | uint8_t zbc_has_cksum; /* expected/actual valid */ | |
58 | } zio_bad_cksum_t; | |
59 | ||
34dc7c2f BB |
60 | extern zio_checksum_info_t zio_checksum_table[ZIO_CHECKSUM_FUNCTIONS]; |
61 | ||
62 | /* | |
63 | * Checksum routines. | |
64 | */ | |
37f8a883 | 65 | extern zio_checksum_func_t zio_checksum_SHA256; |
34dc7c2f | 66 | |
b128c09f | 67 | extern void zio_checksum_compute(zio_t *zio, enum zio_checksum checksum, |
34dc7c2f | 68 | void *data, uint64_t size); |
428870ff BB |
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); | |
34dc7c2f BB |
71 | |
72 | #ifdef __cplusplus | |
73 | } | |
74 | #endif | |
75 | ||
76 | #endif /* _SYS_ZIO_CHECKSUM_H */ |