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scsi: core: Add a new error code DID_TRANSPORT_MARGINAL in scsi.h 

Add code in scsi_result_to_blk_status to translate a new error
DID_TRANSPORT_MARGINAL to the corresponding blk_status_t i.e
BLK_STS_TRANSPORT.

Add DID_TRANSPORT_MARGINAL case to scsi_decide_disposition().

Link: https://lore.kernel.org/r/1609969748-17684-2-git-send-email-muneendra.kumar@broadcom.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Muneendra Kumar <muneendra.kumar@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Muneendra Kumar 2021-01-07 03:19:04 +05:30 committed by Martin K. Petersen
parent 032d190086
commit 962c8dcdd5
3 changed files with 8 additions and 0 deletions
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6
drivers/scsi/scsi_error.c
View File

@ -1861,6 +1861,12 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd)
* the fast io fail tmo fired), so send IO directly upwards.
*/
return SUCCESS;
case DID_TRANSPORT_MARGINAL:
/*
* caller has decided not to do retries on
* abort success, so send IO directly upwards
*/
return SUCCESS;
case DID_ERROR:
if (msg_byte(scmd->result) == COMMAND_COMPLETE &&
status_byte(scmd->result) == RESERVATION_CONFLICT)

1
drivers/scsi/scsi_lib.c
View File

@ -630,6 +630,7 @@ static blk_status_t scsi_result_to_blk_status(struct scsi_cmnd *cmd, int result)
return BLK_STS_OK;
return BLK_STS_IOERR;
case DID_TRANSPORT_FAILFAST:
case DID_TRANSPORT_MARGINAL:
return BLK_STS_TRANSPORT;
case DID_TARGET_FAILURE:
set_host_byte(cmd, DID_OK);

1
include/scsi/scsi.h
View File

@ -159,6 +159,7 @@ static inline int scsi_is_wlun(u64 lun)
* paths might yield different results */
#define DID_ALLOC_FAILURE 0x12 /* Space allocation on the device failed */
#define DID_MEDIUM_ERROR 0x13 /* Medium error */
#define DID_TRANSPORT_MARGINAL 0x14 /* Transport marginal errors */
#define DRIVER_OK 0x00 /* Driver status */
/*