linux-toradex.git/drivers/target/loopback, branch v5.14-rc2

scsi: core: Kill DRIVER_SENSE

2021-06-01T02:48:21+00:00

Replace the check for DRIVER_SENSE with a check for
scsi_status_is_check_condition().

Audit all callsites to ensure the SAM status is set correctly. For
backwards compability move the DRIVER_SENSE definition to sg.h, and update
sg, bsg, and scsi_ioctl to set the DRIVER_SENSE driver_status whenever
SAM_STAT_CHECK_CONDITION is present.

[mkp: fix zeroday srp warning]

Link: https://lore.kernel.org/r/20210427083046.31620-10-hare@suse.de
Signed-off-by: Hannes Reinecke 
Signed-off-by: Martin K. Petersen 

fix

scsi: target: tcm_loop: Use LIO wq cmd submission helper

2021-03-04T22:37:02+00:00

Convert loop to use the LIO wq cmd submission helper.

Link: https://lore.kernel.org/r/20210227170006.5077-20-michael.christie@oracle.com
Tested-by: Laurence Oberman 
Reviewed-by: Bodo Stroesser 
Signed-off-by: Mike Christie 
Signed-off-by: Martin K. Petersen

scsi: target: tcm_loop: Use block cmd allocator for se_cmds

2021-03-04T22:37:02+00:00

Make tcm_loop use the block layer cmd allocator for se_cmds instead of
using the tcm_loop_cmd_cache. In the future when we can use the host tags
for internal requests like TMFs we can completely kill the
tcm_loop_cmd_cache.

Link: https://lore.kernel.org/r/20210227170006.5077-19-michael.christie@oracle.com
Tested-by: Laurence Oberman 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Mike Christie 
Signed-off-by: Martin K. Petersen

scsi: target: core: Add gfp_t arg to target_cmd_init_cdb()

2021-03-04T22:37:02+00:00

tcm_loop could be used like a normal block device, so we can't use
GFP_KERNEL and should use GFP_NOIO. This adds a gfp_t arg to
target_cmd_init_cdb() and converts the users. For every driver but loop
GFP_KERNEL is kept.

This will also be useful in subsequent patches where loop needs to do
target_submit_prep() from interrupt context to get a ref to the se_device,
and so it will need to use GFP_ATOMIC.

Link: https://lore.kernel.org/r/20210227170006.5077-16-michael.christie@oracle.com
Tested-by: Laurence Oberman 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Mike Christie 
Signed-off-by: Martin K. Petersen

scsi: target: tcm_loop: Convert to new submission API

2021-03-04T22:37:01+00:00

target_submit_cmd_map_sgls() is being removed, so convert loop to
the new submission API.

Even though loop does its own shutdown sync, this has loop use
target_init_cmd()/target_submit_prep()/target_submit() since it needed to
map sgls and in the next patches it will use the API to use LIO's
workqueue.

Link: https://lore.kernel.org/r/20210227170006.5077-9-michael.christie@oracle.com
Tested-by: Laurence Oberman 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Mike Christie 
Signed-off-by: Martin K. Petersen

scsi: tcm_loop: Allow queues, can_queue and cmd_per_lun to be settable

2020-11-05T03:39:38+00:00

Make can_queue, nr_hw_queues and cmd_per_lun settable by the user instead
of hard coding them.

Link: https://lore.kernel.org/r/1604257174-4524-9-git-send-email-michael.christie@oracle.com
Reviewed-by: Himanshu Madhani 
Signed-off-by: Mike Christie 
Signed-off-by: Martin K. Petersen

scsi: target: loopback: Fix READ with data and sensebytes

2020-05-12T02:20:19+00:00

We use tcm_loop with tape emulations running on tcmu.

In case application reads a short tape block with a longer READ, or a long
tape block with a short READ, according to SCC spec data has to be
tranferred _and_ sensebytes with ILI set and information field containing
the residual count. Similar problem also exists when using fixed block
size in READ.

Up to now tcm_loop is not prepared to handle sensebytes if input data is
provided, as in tcm_loop_queue_data_in() it only sets SAM_STAT_GOOD and, if
necessary, the residual count.

To fix the bug, the same handling for sensebytes as present in
tcm_loop_queue_status() must be done in tcm_loop_queue_data_in() also.

After adding this handling, the two function now are nearly identical, so I
created a single function with two wrappers.

Link: https://lore.kernel.org/r/20200428182617.32726-1-bstroesser@ts.fujitsu.com
Signed-off-by: Bodo Stroesser 
Signed-off-by: Martin K. Petersen

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

scsi: remove bidirectional command support

2019-02-06T02:29:21+00:00

No real need for bidi support once the OSD code is gone.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jens Axboe 
Signed-off-by: Martin K. Petersen

scsi: target/core: Remove the write_pending_status() callback function

2019-02-05T02:23:59+00:00

Due to the patch that makes TMF handling synchronous the
write_pending_status() callback function is no longer called.  Hence remove
it.

Acked-by: Felipe Balbi 
Reviewed-by: Sagi Grimberg 
Reviewed-by: Andy Grover 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Bryant G. Ly 
Cc: Nicholas Bellinger 
Cc: Mike Christie 
Cc: Himanshu Madhani 
Cc: Quinn Tran 
Cc: Saurav Kashyap 
Cc: Michael S. Tsirkin 
Cc: Juergen Gross 
Signed-off-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen