[PATCH v11 03/34] scsi: Add scsi_failure field to scsi_exec_args

Mike Christie
2023-09-05T23:21:28Z

Allow SCSI execution callers to pass in a list of failures they want
retried.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
---
drivers/scsi/scsi_lib.c | 1 +
include/scsi/scsi_device.h | 2 ++
2 files changed, 3 insertions(+)

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 7c3e18663c64..d9432bbb64fd 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -237,6 +237,7 @@ int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd,
scmd->cmd_len = COMMAND_SIZE(cmd[0]);
memcpy(scmd->cmnd, cmd, scmd->cmd_len);
scmd->allowed = retries;
+ scmd->failures = args->failures;
scmd->flags |= args->scmd_flags;
req->timeout = timeout;
req->rq_flags |= RQF_QUIET;
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 75b2235b99e2..accf6c80591b 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -14,6 +14,7 @@ struct bsg_device;
struct device;
struct request_queue;
struct scsi_cmnd;
+struct scsi_failure;
struct scsi_lun;
struct scsi_sense_hdr;

@@ -472,6 +473,7 @@ struct scsi_exec_args {
blk_mq_req_flags_t req_flags; /* BLK_MQ_REQ flags */
int scmd_flags; /* SCMD flags */
int *resid; /* residual length */
+ struct scsi_failure *failures; /* failures to retry */
};

int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd,
--
2.34.1