diff options
| author | John Garry <john.garry@huawei.com> | 2022-10-18 19:15:57 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-10-22 03:02:51 +0000 |
| commit | a9ee3f840646e2ec419c734e592ffe997195435e (patch) | |
| tree | 36aa4098783645411c691a388f7f72ed3c8c6659 /include/scsi | |
| parent | 621a323c3a7e23b364deaddf769e731f2da6ff03 (diff) | |
| download | linux-a9ee3f840646e2ec419c734e592ffe997195435e.tar.bz2 | |
scsi: libsas: Add sas_task_find_rq()
blk-mq already provides a unique tag per request. Some libsas LLDDs - like
hisi_sas - already use this tag as the unique per-I/O HW tag.
Add a common function to provide the request associated with a sas_task for
all libsas LLDDs.
Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1666091763-11023-2-git-send-email-john.garry@huawei.com
Reviewed-by: Jack Wang <jinpu.wang@ionos.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/libsas.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index ec6c9ecd8d12..1aee3d0ebbb2 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -644,6 +644,24 @@ static inline bool sas_is_internal_abort(struct sas_task *task) return task->task_proto == SAS_PROTOCOL_INTERNAL_ABORT; } +static inline struct request *sas_task_find_rq(struct sas_task *task) +{ + struct scsi_cmnd *scmd; + + if (task->task_proto & SAS_PROTOCOL_STP_ALL) { + struct ata_queued_cmd *qc = task->uldd_task; + + scmd = qc ? qc->scsicmd : NULL; + } else { + scmd = task->uldd_task; + } + + if (!scmd) + return NULL; + + return scsi_cmd_to_rq(scmd); +} + struct sas_domain_function_template { /* The class calls these to notify the LLDD of an event. */ void (*lldd_port_formed)(struct asd_sas_phy *); |