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scsi: core: Add get_{status,host}_byte() accessor functions 

Add accessor functions for the host and status byte.

Link: https://lore.kernel.org/r/20210427083046.31620-17-hare@suse.de
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2021-04-27 10:30:22 +02:00 committed by Martin K. Petersen
parent 7b25bdb1c8
commit f6b5a69706
1 changed files with 10 additions and 0 deletions
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10
include/scsi/scsi_cmnd.h
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@ -315,6 +315,11 @@ static inline void set_status_byte(struct scsi_cmnd *cmd, char status)
cmd->result = (cmd->result & 0xffffff00) | status;
}
static inline u8 get_status_byte(struct scsi_cmnd *cmd)
{
return cmd->result & 0xff;
}
static inline void set_msg_byte(struct scsi_cmnd *cmd, char status)
{
cmd->result = (cmd->result & 0xffff00ff) | (status << 8);
@ -325,6 +330,11 @@ static inline void set_host_byte(struct scsi_cmnd *cmd, char status)
cmd->result = (cmd->result & 0xff00ffff) | (status << 16);
}
static inline u8 get_host_byte(struct scsi_cmnd *cmd)
{
return (cmd->result >> 16) & 0xff;
}
static inline unsigned scsi_transfer_length(struct scsi_cmnd *scmd)
{