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RDMA/mlx5: Define RoCEv2 udp source port when set path

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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>
This commit is contained in:
Mark Zhang 2020-05-04 08:19:33 +03:00 committed by Jason Gunthorpe
parent 9611d53aa1
commit 2b880b2e5e
1 changed files with 24 additions and 6 deletions
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30
drivers/infiniband/hw/mlx5/qp.c
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@ -3133,6 +3133,21 @@ static int modify_raw_packet_tx_affinity(struct mlx5_core_dev *dev,
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_dev *dev, struct mlx5_ib_qp *qp,
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)