linux/drivers/scsi/qla2xxx/qla_dsd.h

#ifndef _QLA_DSD_H_
#define _QLA_DSD_H_

#include <asm/unaligned.h>

/* 32-bit data segment descriptor (8 bytes) */
struct dsd32 { … };

static inline void append_dsd32(struct dsd32 **dsd, struct scatterlist *sg)
{ … }

/* 64-bit data segment descriptor (12 bytes) */
struct dsd64 { … } __packed;

static inline void append_dsd64(struct dsd64 **dsd, struct scatterlist *sg)
{ … }

#endif