From: Zhu Yanjun <yanjun.zhu@xxxxxxxxx> Based on the link https://www.spinics.net/lists/linux-rdma/msg73735.html, get the source udp port number for a QP based on the grh.flow_label or lqpn/rqrpn. This provides a better spread of traffic across NIC RX queues. The method in the commit 2b880b2e5e03 ("RDMA/mlx5: Define RoCEv2 udp source port when set path") is a standard way. So it is also adopted in this commit. Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxx> --- V2->V3: Move to the block of IB_QP_AV in the mask and IB_AH_GRH in ah_flags V1->V2: Adopt a standard method to get udp source port. --- drivers/infiniband/hw/irdma/verbs.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c index 8cd5f9261692..31039b295206 100644 --- a/drivers/infiniband/hw/irdma/verbs.c +++ b/drivers/infiniband/hw/irdma/verbs.c @@ -1094,6 +1094,15 @@ static int irdma_query_pkey(struct ib_device *ibdev, u32 port, u16 index, return 0; } + +static u16 irdma_get_udp_sport(u32 fl, u32 lqpn, u32 rqpn) +{ + if (!fl) + fl = rdma_calc_flow_label(lqpn, rqpn); + + return rdma_flow_label_to_udp_sport(fl); +} + /** * irdma_modify_qp_roce - modify qp request * @ibqp: qp's pointer for modify @@ -1167,6 +1176,11 @@ int irdma_modify_qp_roce(struct ib_qp *ibqp, struct ib_qp_attr *attr, memset(&iwqp->roce_ah, 0, sizeof(iwqp->roce_ah)); if (attr->ah_attr.ah_flags & IB_AH_GRH) { + u32 fl = udp_info->flow_label; + u32 lqp = ibqp->qp_num; + u32 rqp = roce_info->dest_qp; + + udp_info->src_port = irdma_get_udp_sport(fl, lqp, rqp); udp_info->ttl = attr->ah_attr.grh.hop_limit; udp_info->flow_label = attr->ah_attr.grh.flow_label; udp_info->tos = attr->ah_attr.grh.traffic_class; -- 2.27.0
