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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright Saso Kiselkov 2013, All rights reserved. 24 */ 25 26 #ifndef _SYS_ZIO_CHECKSUM_H 27 #define _SYS_ZIO_CHECKSUM_H 28 29 #include <sys/zio.h> 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 /* 36 * Signature for checksum functions. 37 */ 38 typedef void zio_checksum_t(const void *data, uint64_t size, 39 const zio_cksum_salt_t *salt, const void *ctx_template, zio_cksum_t *zcp); 40 typedef void *zio_checksum_tmpl_init_t(const zio_cksum_salt_t *salt); 41 typedef void zio_checksum_tmpl_free_t(void *ctx_template); 42 43 /* 44 * Information about each checksum function. 45 */ 46 typedef struct zio_checksum_info { 47 /* checksum function for each byteorder */ 48 zio_checksum_t *ci_func[2]; 49 zio_checksum_tmpl_init_t *ci_tmpl_init; 50 zio_checksum_tmpl_free_t *ci_tmpl_free; 51 int ci_correctable; /* number of correctable bits */ 52 int ci_eck; /* uses zio embedded checksum? */ 53 int ci_dedup; /* strong enough for dedup? */ 54 int ci_salted; /* does the checksum support salts */ 55 char *ci_name; /* descriptive name */ 56 } zio_checksum_info_t; 57 58 typedef struct zio_bad_cksum { 59 zio_cksum_t zbc_expected; 60 zio_cksum_t zbc_actual; 61 const char *zbc_checksum_name; 62 uint8_t zbc_byteswapped; 63 uint8_t zbc_injected; 64 uint8_t zbc_has_cksum; /* expected/actual valid */ 65 } zio_bad_cksum_t; 66 67 extern zio_checksum_info_t zio_checksum_table[ZIO_CHECKSUM_FUNCTIONS]; 68 69 /* 70 * Checksum routines. 71 */ 72 extern zio_checksum_t zio_checksum_SHA256; 73 extern zio_checksum_t zio_checksum_SHA512_native; 74 extern zio_checksum_t zio_checksum_SHA512_byteswap; 75 76 /* Skein */ 77 extern zio_checksum_t zio_checksum_skein_native; 78 extern zio_checksum_t zio_checksum_skein_byteswap; 79 extern zio_checksum_tmpl_init_t zio_checksum_skein_tmpl_init; 80 extern zio_checksum_tmpl_free_t zio_checksum_skein_tmpl_free; 81 82 /* Edon-R */ 83 extern zio_checksum_t zio_checksum_edonr_native; 84 extern zio_checksum_t zio_checksum_edonr_byteswap; 85 extern zio_checksum_tmpl_init_t zio_checksum_edonr_tmpl_init; 86 extern zio_checksum_tmpl_free_t zio_checksum_edonr_tmpl_free; 87 88 extern void zio_checksum_compute(zio_t *zio, enum zio_checksum checksum, 89 void *data, uint64_t size); 90 extern int zio_checksum_error(zio_t *zio, zio_bad_cksum_t *out); 91 extern enum zio_checksum spa_dedup_checksum(spa_t *spa); 92 extern void zio_checksum_templates_free(spa_t *spa); 93 94 #ifdef __cplusplus 95 } 96 #endif 97 98 #endif /* _SYS_ZIO_CHECKSUM_H */