/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License (the "License").

 * You may not use this file except in compliance with the License.

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.

 * Use is subject to license terms.

 */

#ifndef _SYS_ZIO_CHECKSUM_H

#define	_SYS_ZIO_CHECKSUM_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <sys/zio.h>

#ifdef	__cplusplus

extern "C" {

#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_zbt;		/* uses zio block tail?	*/

	char		*ci_name;	/* descriptive name */

} zio_checksum_info_t;

extern zio_checksum_info_t zio_checksum_table[ZIO_CHECKSUM_FUNCTIONS];

/*

 * Checksum routines.

 */

extern zio_checksum_t fletcher_2_native;

extern zio_checksum_t fletcher_4_native;

extern zio_checksum_t fletcher_4_incremental_native;

extern zio_checksum_t fletcher_2_byteswap;

extern zio_checksum_t fletcher_4_byteswap;

extern zio_checksum_t fletcher_4_incremental_byteswap;

extern zio_checksum_t zio_checksum_SHA256;

extern void zio_checksum(uint_t checksum, zio_cksum_t *zcp,

    void *data, uint64_t size);

extern int zio_checksum_error(zio_t *zio);

#ifdef	__cplusplus

}

#endif

#endif	/* _SYS_ZIO_CHECKSUM_H */