net/mlx5e: XDP, Improve Striding RQ check with XDP

Non-linear mem scheme of Striding RQ does not yet support XDP at this
point. Take the check where it belongs, inside the params validation
function mlx5e_params_validate_xdp().

Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index ccf7bb1..faae443 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4261,8 +4261,16 @@ static bool mlx5e_params_validate_xdp(struct net_device *netdev,
        /* No XSK params: AF_XDP can't be enabled yet at the point of setting
         * the XDP program.
         */
-       is_linear = mlx5e_rx_is_linear_skb(mdev, params, NULL);
+       is_linear = params->rq_wq_type == MLX5_WQ_TYPE_CYCLIC ?
+               mlx5e_rx_is_linear_skb(mdev, params, NULL) :
+               mlx5e_rx_mpwqe_is_linear_skb(mdev, params, NULL);
 
+       /* XDP affects striding RQ parameters. Block XDP if striding RQ won't be
+        * supported with the new parameters: if PAGE_SIZE is bigger than
+        * MLX5_MPWQE_LOG_STRIDE_SZ_MAX, striding RQ can't be used, even though
+        * the MTU is small enough for the linear mode, because XDP uses strides
+        * of PAGE_SIZE on regular RQs.
+        */
        if (!is_linear && params->rq_wq_type != MLX5_WQ_TYPE_CYCLIC) {
                netdev_warn(netdev, "XDP is not allowed with striding RQ and MTU(%d) > %d\n",
                            params->sw_mtu,
@@ -4817,19 +4825,6 @@ static int mlx5e_xdp_set(struct net_device *netdev, struct bpf_prog *prog)
        new_params = priv->channels.params;
        new_params.xdp_prog = prog;
 
-       /* XDP affects striding RQ parameters. Block XDP if striding RQ won't be
-        * supported with the new parameters: if PAGE_SIZE is bigger than
-        * MLX5_MPWQE_LOG_STRIDE_SZ_MAX, striding RQ can't be used, even though
-        * the MTU is small enough for the linear mode, because XDP uses strides
-        * of PAGE_SIZE on regular RQs.
-        */
-       if (reset && MLX5E_GET_PFLAG(&new_params, MLX5E_PFLAG_RX_STRIDING_RQ)) {
-               /* Checking for regular RQs here; XSK RQs were checked on XSK bind. */
-               err = mlx5e_mpwrq_validate_regular(priv->mdev, &new_params);
-               if (err)
-                       goto unlock;
-       }
-
        old_prog = priv->channels.params.xdp_prog;
 
        err = mlx5e_safe_switch_params(priv, &new_params, NULL, NULL, reset);