* [RESEND PATCH for-next] RDMA/hns: Fix incorrect lsn field
@ 2021-08-25 9:19 Wenpeng Liang
2021-08-25 17:50 ` Jason Gunthorpe
0 siblings, 1 reply; 2+ messages in thread
From: Wenpeng Liang @ 2021-08-25 9:19 UTC (permalink / raw)
To: dledford, jgg; +Cc: linux-rdma, linuxarm, liangwenpeng
From: Yixing Liu <liuyixing1@huawei.com>
In RNR NAK screnario, according to the specification, when no credit is
available, only the first fragment of the send request can be sent. The
LSN(Limit Sequence Number) field should be 0 or the entire packet will be
resent.
Fixes: 926a01dc000d ("RDMA/hns: Add QP operations support for hip08 SoC")
Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
---
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 3 ---
1 file changed, 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 d00be78..198a0c6 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4483,9 +4483,6 @@ static int modify_qp_rtr_to_rts(struct ib_qp *ibqp,
hr_reg_clear(qpc_mask, QPC_CHECK_FLG);
- hr_reg_write(context, QPC_LSN, 0x100);
- hr_reg_clear(qpc_mask, QPC_LSN);
-
hr_reg_clear(qpc_mask, QPC_V2_IRRL_HEAD);
return 0;
--
2.8.1
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [RESEND PATCH for-next] RDMA/hns: Fix incorrect lsn field
2021-08-25 9:19 [RESEND PATCH for-next] RDMA/hns: Fix incorrect lsn field Wenpeng Liang
@ 2021-08-25 17:50 ` Jason Gunthorpe
0 siblings, 0 replies; 2+ messages in thread
From: Jason Gunthorpe @ 2021-08-25 17:50 UTC (permalink / raw)
To: Wenpeng Liang; +Cc: dledford, linux-rdma, linuxarm
On Wed, Aug 25, 2021 at 05:19:29PM +0800, Wenpeng Liang wrote:
> From: Yixing Liu <liuyixing1@huawei.com>
>
> In RNR NAK screnario, according to the specification, when no credit is
> available, only the first fragment of the send request can be sent. The
> LSN(Limit Sequence Number) field should be 0 or the entire packet will be
> resent.
>
> Fixes: 926a01dc000d ("RDMA/hns: Add QP operations support for hip08 SoC")
> Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
> Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
> ---
> drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 3 ---
> 1 file changed, 3 deletions(-)
Applied to for-next, thanks
Jason
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-08-25 9:19 [RESEND PATCH for-next] RDMA/hns: Fix incorrect lsn field Wenpeng Liang
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