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mlx4: Set user-space raw Ethernet QPs to properly handle VXLAN traffic

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Raw Ethernet QPs opened from user-space lack the proper setup to
recieve/handle VXLAN traffic when VXLAN offloads are enabled.

Fix that by adding a tunnel steering rule on top of the normal unicast
steering rule and set the tunnel_type field in the QP context.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Or Gerlitz 2014-08-27 16:47:49 +03:00 committed by David S. Miller
parent b95089d00c
commit d2fce8a906
2 changed files with 37 additions and 1 deletions
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30
drivers/infiniband/hw/mlx4/main.c
View file

@ -1089,6 +1089,30 @@ static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
return err;
}
static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
u64 *reg_id)
{
void *ib_flow;
union ib_flow_spec *ib_spec;
struct mlx4_dev *dev = to_mdev(qp->device)->dev;
int err = 0;
if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
return 0; /* do nothing */
ib_flow = flow_attr + 1;
ib_spec = (union ib_flow_spec *)ib_flow;
if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
return 0; /* do nothing */
err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
flow_attr->port, qp->qp_num,
MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
reg_id);
return err;
}
static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
struct ib_flow_attr *flow_attr,
int domain)
@ -1136,6 +1160,12 @@ static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
i++;
}
if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
err = mlx4_ib_tunnel_steer_add(qp, flow_attr, &mflow->reg_id[i]);
if (err)
goto err_free;
}
return &mflow->ibflow;
err_free:

8
drivers/infiniband/hw/mlx4/qp.c
View file

@ -1677,9 +1677,15 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
}
}
if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET)
if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
context->pri_path.ackto = (context->pri_path.ackto & 0xf8) |
MLX4_IB_LINK_TYPE_ETH;
if (dev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
/* set QP to receive both tunneled & non-tunneled packets */
if (!(context->flags & (1 << MLX4_RSS_QPC_FLAG_OFFSET)))
context->srqn = cpu_to_be32(7 << 28);
}
}
if (ibqp->qp_type == IB_QPT_UD && (new_state == IB_QPS_RTR)) {
int is_eth = rdma_port_get_link_layer(