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| author | Sergey Samoylenko <s.samoylenko@yadro.com> | 2021-08-03 17:54:09 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-08-17 22:28:40 -0400 |
| commit | 44678553ad7eb59be3092d6677d8d4a00289afda (patch) | |
| tree | 67b94778206cccd8e635cbb9dff224584eaed2de /drivers/target | |
| parent | 5f492a7aa13b4ebf8ca85e818585394053065240 (diff) | |
| download | linux-44678553ad7eb59be3092d6677d8d4a00289afda.tar.gz linux-44678553ad7eb59be3092d6677d8d4a00289afda.tar.bz2 linux-44678553ad7eb59be3092d6677d8d4a00289afda.zip | |
scsi: target: Allows backend drivers to fail with specific sense codes
Currently, backend drivers can fail I/O with SAM_STAT_CHECK_CONDITION which
gets us TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE.
Add a new helper that allows backend drivers to fail with specific sense
codes.
This is based on a patch from Mike Christie <michael.christie@oracle.com>.
Cc: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20210803145410.80147-2-s.samoylenko@yadro.com
Reviewed-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Sergey Samoylenko <s.samoylenko@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_transport.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index c26b3afc4575..14c6f2bb1b01 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -736,8 +736,7 @@ static void target_complete_failure_work(struct work_struct *work) { struct se_cmd *cmd = container_of(work, struct se_cmd, work); - transport_generic_request_failure(cmd, - TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE); + transport_generic_request_failure(cmd, cmd->sense_reason); } /* @@ -855,7 +854,8 @@ static bool target_cmd_interrupted(struct se_cmd *cmd) } /* May be called from interrupt context so must not sleep. */ -void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status) +void target_complete_cmd_with_sense(struct se_cmd *cmd, u8 scsi_status, + sense_reason_t sense_reason) { struct se_wwn *wwn = cmd->se_sess->se_tpg->se_tpg_wwn; int success, cpu; @@ -865,6 +865,7 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status) return; cmd->scsi_status = scsi_status; + cmd->sense_reason = sense_reason; spin_lock_irqsave(&cmd->t_state_lock, flags); switch (cmd->scsi_status) { @@ -893,6 +894,14 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status) queue_work_on(cpu, target_completion_wq, &cmd->work); } +EXPORT_SYMBOL(target_complete_cmd_with_sense); + +void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status) +{ + target_complete_cmd_with_sense(cmd, scsi_status, scsi_status ? + TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE : + TCM_NO_SENSE); +} EXPORT_SYMBOL(target_complete_cmd); void target_set_cmd_data_length(struct se_cmd *cmd, int length) |