From: Shreyas Deodhar <sdeodhar@xxxxxxxxxxx>
Process responses in Tx path if any available for better performance.
Fixes: e84067d743010 ("scsi: qla2xxx: Add FC-NVMe F/W initialization and
transport registration”)
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Shreyas Deodhar<sdeodhar@xxxxxxxxxxx>
Signed-off-by: Nilesh Javali <njavali@xxxxxxxxxxx>
Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_nvme.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
index 877b2b625020..0ae1e081cb03 100644
--- a/drivers/scsi/qla2xxx/qla_nvme.c
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -399,6 +399,7 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
uint16_t avail_dsds;
struct dsd64 *cur_dsd;
struct req_que *req = NULL;
+ struct rsp_que *rsp = NULL;
struct scsi_qla_host *vha = sp->fcport->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_qpair *qpair = sp->qpair;
@@ -410,6 +411,7 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
/* Setup qpair pointers */
req = qpair->req;
+ rsp = qpair->rsp;
tot_dsds = fd->sg_cnt;
/* Acquire qpair specific lock */
@@ -571,6 +573,10 @@ static inline int qla2x00_start_nvme_mq(srb_t *sp)
/* Set chip new ring index. */
wrt_reg_dword(req->req_q_in, req->ring_index);
+ if (vha->flags.process_response_queue &&
+ rsp->ring_ptr->signature != RESPONSE_PROCESSED)
+ qla24xx_process_response_queue(vha, rsp);
+
queuing_error:
spin_unlock_irqrestore(&qpair->qp_lock, flags);
--
2.19.0.rc0
