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List:       linux-rdma
Subject:    [PATCH for-next 1/2] RDMA/hns: Bugfix for filling the sge of srq
From:       Lijun Ou <oulijun () huawei ! com>
Date:       2019-05-31 10:28:03
Message-ID: 1559298484-63548-2-git-send-email-oulijun () huawei ! com
[Download RAW message or body]

When user post recv a srq with multiple sges, the hardware will
get the last correct sge and count the sge numbers according to
the specific identifier with lkey. For example, when the driver
fill the sges with every wr less than the max sge that the user
configured when creating srq, the hardware will stop getting the
sge according to the specific lkey in the sge. However, it will
always end with the first sge in the current post srq recv
interface implementation.

Fixes: c7bcb13442e1 ("RDMA/hns: Add SRQ support for hip08 kernel mode")
Signed-off-by: Lijun Ou <oulijun@huawei.com>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 135c703..ca319fc 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -6079,9 +6079,9 @@ static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq,
 		}
 
 		if (i < srq->max_gs) {
-			dseg->len = 0;
-			dseg->lkey = cpu_to_le32(0x100);
-			dseg->addr = 0;
+			dseg[i].len = 0;
+			dseg[i].lkey = cpu_to_le32(0x100);
+			dseg[i].addr = 0;
 		}
 
 		srq->wrid[wqe_idx] = wr->wr_id;
-- 
1.9.1

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