Re: [PATCH v2 06/18] scsi: support service action in scsi_report_opcode()

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On 1/12/23 15:03, Niklas Cassel wrote:
From: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>

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 <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Niklas Cassel <niklas.cassel@xxxxxxx>
---
  drivers/scsi/scsi.c        | 28 +++++++++++++++++++---------
  drivers/scsi/sd.c          | 10 +++++-----
  include/scsi/scsi_device.h |  3 ++-
  3 files changed, 26 insertions(+), 15 deletions(-)

Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes
--
Dr. Hannes Reinecke		           Kernel Storage Architect
hare@xxxxxxx			                  +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Felix Imendörffer




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