diff options
| author | Quinn Tran <qutran@marvell.com> | 2022-12-19 03:07:41 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-01-11 21:28:37 -0500 |
| commit | 41e5afe51f75f2858f5563145348f6c26d307b8f (patch) | |
| tree | 7d7ada02cd9e0ea31e985ec9d1e605bdc3d2311a /drivers/scsi/qla2xxx/qla_isr.c | |
| parent | c75e6aef5039830cce5d4cf764dd204522f89e6b (diff) | |
scsi: qla2xxx: Fix exchange oversubscription
In large environment, it is possible to experience command timeout and
escalation of path recovery. Currently the driver does not track the number
of exchanges/commands sent to FW. If there is a delay for commands at the
head of the queue, then this will create back pressure for commands at the
back of the queue.
Check for exchange availability before command submission.
Fixes: 89c72f4245a8 ("scsi: qla2xxx: Add IOCB resource tracking")
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_isr.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_isr.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index e19fde304e5c..42d3d2de3d31 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -3197,7 +3197,7 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt) } return; } - qla_put_iocbs(sp->qpair, &sp->iores); + qla_put_fw_resources(sp->qpair, &sp->iores); if (sp->cmd_type != TYPE_SRB) { req->outstanding_cmds[handle] = NULL; @@ -3618,7 +3618,6 @@ qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt) default: sp = qla2x00_get_sp_from_handle(vha, func, req, pkt); if (sp) { - qla_put_iocbs(sp->qpair, &sp->iores); sp->done(sp, res); return 0; } |