diff options
| author | Yixing Liu <liuyixing1@huawei.com> | 2021-08-25 17:19:29 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-18 13:43:32 +0200 |
| commit | 10436af984dad7081048bb535bc08cbeee67f46a (patch) | |
| tree | ead275f5148d28be0575011bd4130f113e751b12 /drivers/infiniband | |
| parent | 5d2246972e54329dac3a36839989dd42d1a6e9bc (diff) | |
RDMA/hns: Fix incorrect lsn field
[ Upstream commit 9bed8a70716ba65d300b9cc30eb7e0276353f7bf ]
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")
Link: https://lore.kernel.org/r/1629883169-2306-1-git-send-email-liangwenpeng@huawei.com
Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 3 |
1 files changed, 0 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 0e0be5664137..f4cea6dcec2f 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -4489,9 +4489,6 @@ 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; |