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| author | John Garry <john.garry@huawei.com> | 2022-10-18 19:15:57 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-29 13:59:51 +0100 |
| commit | c51f9de0917419a096c9640d600a9846c269259a (patch) | |
| tree | 27da672f76525ce97edcce2760eb2118286268e1 /include | |
| parent | 0cbbf2741f43fa48dc814ff85c0a3176bba6f66c (diff) | |
| download | linux-c51f9de0917419a096c9640d600a9846c269259a.tar.gz linux-c51f9de0917419a096c9640d600a9846c269259a.tar.bz2 linux-c51f9de0917419a096c9640d600a9846c269259a.zip | |
scsi: libsas: Add sas_task_find_rq()
[ Upstream commit a9ee3f840646e2ec419c734e592ffe997195435e ]
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>
Stable-dep-of: 60cd16a3b743 ("scsi: mvsas: Fix use-after-free bugs in mvs_work_queue")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -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 4e2d61e8fb1e..8461fad88a11 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -620,6 +620,24 @@ extern struct sas_task *sas_alloc_task(gfp_t flags); extern struct sas_task *sas_alloc_slow_task(gfp_t flags); extern void sas_free_task(struct sas_task *task); +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 *); |