scsi: core: Support Service Action in scsi_report_opcode()

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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>

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Damien Le Moal 2023-05-11 03:13:40 +02:00 • committed by Martin K. Petersen

parent a6cdc35fab

commit 152e52fb6f

3 changed files with 27 additions and 16 deletions

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include/scsi/scsi_device.h

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