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Move code that is used both by initiator and target drivers

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Move the functions that are used by both the initiator and target
subsystems into scsi_common.c/.h. This change will allow to remove
the initiator SCSI header include directives from most SCSI target
source files in a later patch.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
This commit is contained in:
Bart Van Assche
2015-05-08 10:07:48 +02:00
committed by James Bottomley
parent c5f1ac8b94
commit 07e3842055
9 changed files with 244 additions and 223 deletions
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19
include/scsi/scsi.h
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@@ -8,6 +8,7 @@
#include <linux/types.h>
#include <linux/scatterlist.h>
#include <linux/kernel.h>
#include <scsi/scsi_common.h>
#include <scsi/scsi_proto.h>
struct scsi_cmnd;
@@ -47,22 +48,6 @@ enum scsi_timeouts {
*/
#define SCAN_WILD_CARD ~0
static inline unsigned
scsi_varlen_cdb_length(const void *hdr)
{
return ((struct scsi_varlen_cdb_hdr *)hdr)->additional_cdb_length + 8;
}
extern const unsigned char scsi_command_size_tbl[8];
#define COMMAND_SIZE(opcode) scsi_command_size_tbl[((opcode) >> 5) & 7]
static inline unsigned
scsi_command_size(const unsigned char *cmnd)
{
return (cmnd[0] == VARIABLE_LENGTH_CMD) ?
scsi_varlen_cdb_length(cmnd) : COMMAND_SIZE(cmnd[0]);
}
#ifdef CONFIG_ACPI
struct acpi_bus_type;
@@ -96,8 +81,6 @@ static inline int scsi_status_is_good(int status)
(status == SAM_STAT_COMMAND_TERMINATED));
}
/* Returns a human-readable name for the device */
extern const char * scsi_device_type(unsigned type);
/*
* standard mode-select header prepended to all mode-select commands