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RDMA/hns: Remove the condition of light load for posting DWQE
author
Yixian Liu
<liuyixian@huawei.com>
Wed, 28 Apr 2021 07:12:30 +0000
(15:12 +0800)
committer
Jason Gunthorpe
<jgg@nvidia.com>
Tue, 11 May 2021 16:15:22 +0000
(13:15 -0300)
Even in the case of heavy load, direct WQE can still be posted. The
hardware will decide whether to drop the DWQE or not. Thus, the limit
needs to be removed.
Fixes:
01584a5edcc4
("RDMA/hns: Add support of direct wqe")
Link:
https://lore.kernel.org/r/1619593950-29414-1-git-send-email-liweihang@huawei.com
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
patch
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diff --git
a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index
7652daf
..
49bb4f5
100644
(file)
--- a/
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@
-791,8
+791,7
@@
out:
qp->sq.head += nreq;
qp->next_sge = sge_idx;
- if (nreq == 1 && qp->sq.head == qp->sq.tail + 1 &&
- (qp->en_flags & HNS_ROCE_QP_CAP_DIRECT_WQE))
+ if (nreq == 1 && (qp->en_flags & HNS_ROCE_QP_CAP_DIRECT_WQE))
write_dwqe(hr_dev, qp, wqe);
else
update_sq_db(hr_dev, qp);