6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luoyouming <luoyouming@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Signed-off-by: Junxian Huang <huangjunxian6@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231017125239.164455-6-huangjunxian6@xxxxxxxxxxxxx
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 b7faf5c8f6ba8..58d14f1562b9a 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:
--
2.42.0
