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| author | Damien Le Moal <dlemoal@kernel.org> | 2023-05-11 03:13:40 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-05-22 17:05:19 -0400 |
| commit | 152e52fb6ff180e97d64585e87fea44c49b8bda8 (patch) | |
| tree | d5c2365f78257b9b4bb9fba127e972c081f8a83d /include/scsi | |
| parent | a6cdc35fab0d813d54744abe2af07d6c49c07d6e (diff) | |
| download | lwn-152e52fb6ff180e97d64585e87fea44c49b8bda8.tar.gz lwn-152e52fb6ff180e97d64585e87fea44c49b8bda8.zip | |
scsi: core: Support Service Action in scsi_report_opcode()
The REPORT_SUPPORTED_OPERATION_CODES command allows checking for support of
commands that have the same opcode but different service actions, such as
READ 32 and WRITE 32. However, the current implementation of
scsi_report_opcode() only allows checking an operation code without a
service action differentiation.
Add the "sa" argument to scsi_report_opcode() to allow passing a service
action. If a non-zero service action is specified, the reporting options
field value is set to 3 to have the service action field taken into account
by the device. If no service action field is specified (zero), the
reporting options field is set to 1 as before.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Link: https://lore.kernel.org/r/20230511011356.227789-8-nks@flawful.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/scsi_device.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index c146cc807d44..c93c5aaf637e 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -433,8 +433,9 @@ extern int scsi_test_unit_ready(struct scsi_device *sdev, int timeout, int retries, struct scsi_sense_hdr *sshdr); extern int scsi_get_vpd_page(struct scsi_device *, u8 page, unsigned char *buf, int buf_len); -extern int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer, - unsigned int len, unsigned char opcode); +int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer, + unsigned int len, unsigned char opcode, + unsigned short sa); extern int scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state); extern struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type, |