linux-kernel - [PATCH 5.12 465/700] RDMA/hns: Force rewrite inline flag of WQE

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Date:   Mon, 12 Jul 2021 08:09:08 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Lang Cheng <chenglang@...wei.com>,
        Weihang Li <liweihang@...wei.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.12 465/700] RDMA/hns: Force rewrite inline flag of WQE

From: Lang Cheng <chenglang@...wei.com>

[ Upstream commit e13026578b727becf2614f34a4f35e7f0ed21be1 ]

When a non-inline WR reuses a WQE that was used for inline last time, the
remaining inline flag should be cleared.

Fixes: 62490fd5a865 ("RDMA/hns: Avoid unnecessary memset on WQEs in post_send")
Link: https://lore.kernel.org/r/1624011020-16992-2-git-send-email-liweihang@huawei.com
Signed-off-by: Lang Cheng <chenglang@...wei.com>
Signed-off-by: Weihang Li <liweihang@...wei.com>
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 3344b80ecf04..851acc9d050f 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -268,8 +268,6 @@ static int set_rc_inl(struct hns_roce_qp *qp, const struct ib_send_wr *wr,
 
 	dseg += sizeof(struct hns_roce_v2_rc_send_wqe);
 
-	roce_set_bit(rc_sq_wqe->byte_4, V2_RC_SEND_WQE_BYTE_4_INLINE_S, 1);
-
 	if (msg_len <= HNS_ROCE_V2_MAX_RC_INL_INN_SZ) {
 		roce_set_bit(rc_sq_wqe->byte_20,
 			     V2_RC_SEND_WQE_BYTE_20_INL_TYPE_S, 0);
@@ -314,6 +312,8 @@ static int set_rwqe_data_seg(struct ib_qp *ibqp, const struct ib_send_wr *wr,
 		       V2_RC_SEND_WQE_BYTE_20_MSG_START_SGE_IDX_S,
 		       (*sge_ind) & (qp->sge.sge_cnt - 1));
 
+	roce_set_bit(rc_sq_wqe->byte_4, V2_RC_SEND_WQE_BYTE_4_INLINE_S,
+		     !!(wr->send_flags & IB_SEND_INLINE));
 	if (wr->send_flags & IB_SEND_INLINE)
 		return set_rc_inl(qp, wr, rc_sq_wqe, sge_ind);
 
-- 
2.30.2