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RDMA/hns: The UD mode can only be configured with DCQCN 

[ Upstream commit 27c5fd271d8b8730fc0bb1b6cae953ad7808a874 ]

Due to hardware limitations, only DCQCN is supported for UD. Therefore, the
default algorithm for UD is set to DCQCN.

Fixes: f91696f2f0 ("RDMA/hns: Support congestion control type selection according to the FW")
Signed-off-by: Luoyouming <luoyouming@huawei.com>
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://lore.kernel.org/r/20231017125239.164455-6-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Luoyouming 2023-10-17 20:52:37 +08:00 committed by Greg Kroah-Hartman
parent 74161f98a4
commit ceb48ed167
1 changed files with 3 additions and 0 deletions
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3
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
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@ -4725,6 +4725,9 @@ static int check_cong_type(struct ib_qp *ibqp,
{
struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
if (ibqp->qp_type == IB_QPT_UD)
hr_dev->caps.cong_type = CONG_TYPE_DCQCN;
/* different congestion types match different configurations */
switch (hr_dev->caps.cong_type) {
case CONG_TYPE_DCQCN: