ocs_dif.h

/*
 *  BSD LICENSE
 *
 *  Copyright (c) 2011-2018 Broadcom.  All Rights Reserved.
 *  The term "Broadcom" refers to Broadcom Inc. and/or its subsidiaries.
 *
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 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the
 *      distribution.
 *    * Neither the name of Intel Corporation nor the names of its
 *      contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 */

/**
 * @file
 *
 */

#if !defined(__OCS_DIF_H__)
#define __OCS_DIF_H__

typedef struct {
	uint16_t crc;
	uint16_t app_tag;
	uint32_t ref_tag;
} ocs_dif_t;

/* DIF support functions */
extern uint32_t ocs_scsi_dif_blocksize(ocs_scsi_dif_info_t *dif_info);
extern int32_t ocs_scsi_dif_set_blocksize(ocs_scsi_dif_info_t *dif_info, uint32_t blocksize);
extern int32_t ocs_scsi_dif_mem_blocksize(ocs_scsi_dif_info_t *dif_info, int wiretomem);
extern int32_t ocs_scsi_dif_wire_blocksize(ocs_scsi_dif_info_t *dif_info, int wiretomem);
extern uint32_t ocs_hal_dif_blocksize(ocs_hal_dif_info_t *dif_info);
extern int32_t ocs_hal_dif_mem_blocksize(ocs_hal_dif_info_t *dif_info, int wiretomem);
extern int32_t ocs_hal_dif_wire_blocksize(ocs_hal_dif_info_t *dif_info, int wiretomem);

/* DIF guard calculations */
extern uint16_t ocs_scsi_dif_calc_crc(const uint8_t *, uint32_t size, uint16_t crc);
extern uint16_t ocs_scsi_dif_calc_checksum(ocs_scsi_vaddr_len_t addrlen[], uint32_t addrlen_count);

#endif // __OCS_DIF_H__