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RDMA/hns: Configure ecn field of ip header

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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>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Lijun Ou 2018-09-30 17:00:32 +08:00 committed by Jason Gunthorpe
parent 05ad5482a5
commit 157b52a08d
1 changed files with 9 additions and 2 deletions
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11
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
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@ -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,