From: Mark Zhang <markz@mellanox.com>
Date: Mon, 4 May 2020 08:19:33 +0300
Subject: RDMA/mlx5: Define RoCEv2 udp source port when set path
Patch-mainline: v5.8-rc1
Git-commit: 2b880b2e5e03e790a9b9fd7e3e8fcf7a36230a16
References: jsc#SLE-15175
Calculate and set UDP source port based on the flow label. If flow label
is not defined in GRH then calculate it based on lqpn/rqpn.
Link: https://lore.kernel.org/r/20200504051935.269708-4-leon@kernel.org
Signed-off-by: Mark Zhang <markz@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/mlx5/qp.c | 30 ++++++++++++++++++++++++------
1 file changed, 24 insertions(+), 6 deletions(-)
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -3133,6 +3133,21 @@ static int modify_raw_packet_tx_affinity
return err;
}
+static void mlx5_set_path_udp_sport(struct mlx5_qp_path *path,
+ const struct rdma_ah_attr *ah,
+ u32 lqpn, u32 rqpn)
+
+{
+ u32 fl = ah->grh.flow_label;
+ u16 sport;
+
+ if (!fl)
+ fl = rdma_calc_flow_label(lqpn, rqpn);
+
+ sport = rdma_flow_label_to_udp_sport(fl);
+ path->udp_sport = cpu_to_be16(sport);
+}
+
static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
const struct rdma_ah_attr *ah,
struct mlx5_qp_path *path, u8 port, int attr_mask,
@@ -3164,12 +3179,15 @@ static int mlx5_set_path(struct mlx5_ib_
return -EINVAL;
memcpy(path->rmac, ah->roce.dmac, sizeof(ah->roce.dmac));
- if (qp->ibqp.qp_type == IB_QPT_RC ||
- qp->ibqp.qp_type == IB_QPT_UC ||
- qp->ibqp.qp_type == IB_QPT_XRC_INI ||
- qp->ibqp.qp_type == IB_QPT_XRC_TGT)
- path->udp_sport =
- mlx5_get_roce_udp_sport(dev, ah->grh.sgid_attr);
+ if ((qp->ibqp.qp_type == IB_QPT_RC ||
+ qp->ibqp.qp_type == IB_QPT_UC ||
+ qp->ibqp.qp_type == IB_QPT_XRC_INI ||
+ qp->ibqp.qp_type == IB_QPT_XRC_TGT) &&
+ (grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) &&
+ (attr_mask & IB_QP_DEST_QPN))
+ mlx5_set_path_udp_sport(path, ah,
+ qp->ibqp.qp_num,
+ attr->dest_qp_num);
path->dci_cfi_prio_sl = (sl & 0x7) << 4;
gid_type = ah->grh.sgid_attr->gid_type;
if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)