diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 95cec2848685..3256d2c375c3 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -3953,6 +3953,31 @@ static bool mlx5e_xsk_validate_mtu(struct net_device *netdev, return true; } +static bool mlx5e_params_validate_xdp(struct net_device *netdev, struct mlx5e_params *params) +{ + bool is_linear; + + /* 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(params, NULL); + + 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, + mlx5e_xdp_max_mtu(params, NULL)); + return false; + } + if (!is_linear && !params->xdp_prog->aux->xdp_has_frags) { + netdev_warn(netdev, "MTU(%d) > %d, too big for an XDP program not aware of multi buffer\n", + params->sw_mtu, + mlx5e_xdp_max_mtu(params, NULL)); + return false; + } + + return true; +} + int mlx5e_change_mtu(struct net_device *netdev, int new_mtu, mlx5e_fp_preactivate preactivate) { @@ -3972,10 +3997,7 @@ int mlx5e_change_mtu(struct net_device *netdev, int new_mtu, if (err) goto out; - if (params->xdp_prog && - !mlx5e_rx_is_linear_skb(&new_params, NULL)) { - netdev_err(netdev, "MTU(%d) > %d is not allowed while XDP enabled\n", - new_mtu, mlx5e_xdp_max_mtu(params, NULL)); + if (new_params.xdp_prog && !mlx5e_params_validate_xdp(netdev, &new_params)) { err = -EINVAL; goto out; } @@ -4458,15 +4480,8 @@ static int mlx5e_xdp_allowed(struct mlx5e_priv *priv, struct bpf_prog *prog) new_params = priv->channels.params; new_params.xdp_prog = prog; - /* No XSK params: AF_XDP can't be enabled yet at the point of setting - * the XDP program. - */ - if (!mlx5e_rx_is_linear_skb(&new_params, NULL)) { - netdev_warn(netdev, "XDP is not allowed with MTU(%d) > %d\n", - new_params.sw_mtu, - mlx5e_xdp_max_mtu(&new_params, NULL)); + if (!mlx5e_params_validate_xdp(netdev, &new_params)) return -EINVAL; - } return 0; }