| Message ID | 1664528184-162714-2-git-send-email-john.garry@huawei.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | scsi: libsas: Use request tag in more drivers | expand |
On 9/30/22 10:56, John Garry wrote: > blk-mq already provides a unique tag per request. Some libsas LLDDs - like > hisi_sas - already use this tag as the unique per-IO 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> > --- > include/scsi/libsas.h | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index f86b56bf7833..f498217961db 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 *);
blk-mq already provides a unique tag per request. Some libsas LLDDs - like hisi_sas - already use this tag as the unique per-IO 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> --- include/scsi/libsas.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)