From: Luoyouming <luoyouming@huawei.com> stable inclusion from stable-v6.6.2 commit ceb48ed1677f7322e9d75d037633f8474bf26ce7 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 27c5fd271d8b8730fc0bb1b6cae953ad7808a874 ] Due to hardware limitations, only DCQCN is supported for UD. Therefore, the default algorithm for UD is set to DCQCN. Fixes: f91696f2f053 ("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.co... Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index b7faf5c8f6ba..58d14f1562b9 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -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: -- 2.25.1