diff mbox series

[V2,jgg-for-next,05/11] RDMA/hns: Configure ecn field of ip header

Message ID 1538298038-49656-6-git-send-email-oulijun@huawei.com (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show
Series Some misc fixes for hns | expand

Commit Message

Lijun Ou Sept. 30, 2018, 9 a.m. UTC 
In order to compatible with the third party RoCE device, The
hardware modify the set method for the ecn field of ip header
in new hip08 version. The high 6bit of tclass be assigned for
dscp field of packet.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index d563d29..3408fc5 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -3640,8 +3640,15 @@  static int hns_roce_v2_modify_qp(struct ib_qp *ibqp,
 			       V2_QPC_BYTE_24_HOP_LIMIT_M,
 			       V2_QPC_BYTE_24_HOP_LIMIT_S, 0);
 
-		roce_set_field(context->byte_24_mtu_tc, V2_QPC_BYTE_24_TC_M,
-			       V2_QPC_BYTE_24_TC_S, grh->traffic_class);
+		if (hr_dev->pci_dev->revision == 0x21 &&
+		    gid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
+			roce_set_field(context->byte_24_mtu_tc,
+				       V2_QPC_BYTE_24_TC_M, V2_QPC_BYTE_24_TC_S,
+				       grh->traffic_class >> 2);
+		else
+			roce_set_field(context->byte_24_mtu_tc,
+				       V2_QPC_BYTE_24_TC_M, V2_QPC_BYTE_24_TC_S,
+				       grh->traffic_class);
 		roce_set_field(qpc_mask->byte_24_mtu_tc, V2_QPC_BYTE_24_TC_M,
 			       V2_QPC_BYTE_24_TC_S, 0);
 		roce_set_field(context->byte_28_at_fl, V2_QPC_BYTE_28_FL_M,