[PATCH 3/5] scsi: No retries on abort success

[Muneendra <muneendra.kumar@broadcom.com>]

Made an additional check in scsi_noretry_cmd to verify whether user has
decided not to do retries on abort(issued on scsi timeouts) success  by
checking the SCMD_NORETRIES_ABORT bit

If SCMD_NORETRIES_ABORT bit is set we are making sure there won't be any
retries done on the same path and also setting the host byte as
DID_TRANSPORT_FAILFAST so that the error can be propogated as recoverable
transport error to the blk layers.

Signed-off-by: Muneendra <muneendra.kumar@broadcom.com>
---
 drivers/scsi/scsi_error.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 927b1e6..3222496 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -1749,6 +1749,16 @@ int scsi_noretry_cmd(struct scsi_cmnd *scmd)
 
 check_type:
 	/*
+	 * Check whether caller has decided not to do retries on
+	 * abort success by setting the SCMD_NORETRIES_ABORT bit
+	 */
+	if ((test_bit(SCMD_NORETRIES_ABORT, &scmd->state)) &&
+		(scmd->request->cmd_flags & REQ_FAILFAST_TRANSPORT)) {
+		set_host_byte(scmd, DID_TRANSPORT_FAILFAST);
+		return 1;
+	}
+
+	/*
 	 * assume caller has checked sense and determined
 	 * the check condition was retryable.
 	 */
-- 
1.8.3.1