return 0;
}
-static int mlx5e_set_dev_port_mtu(struct net_device *netdev)
+static int mlx5e_set_mtu(struct mlx5e_priv *priv, u16 mtu)
{
- struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5_core_dev *mdev = priv->mdev;
- int hw_mtu;
+ u16 hw_mtu = MLX5E_SW2HW_MTU(mtu);
int err;
- err = mlx5_set_port_mtu(mdev, MLX5E_SW2HW_MTU(netdev->mtu), 1);
+ err = mlx5_set_port_mtu(mdev, hw_mtu, 1);
if (err)
return err;
- mlx5_query_port_oper_mtu(mdev, &hw_mtu, 1);
+ /* Update vport context MTU */
+ mlx5_modify_nic_vport_mtu(mdev, hw_mtu);
+ return 0;
+}
+
+static void mlx5e_query_mtu(struct mlx5e_priv *priv, u16 *mtu)
+{
+ struct mlx5_core_dev *mdev = priv->mdev;
+ u16 hw_mtu = 0;
+ int err;
+
+ err = mlx5_query_nic_vport_mtu(mdev, &hw_mtu);
+ if (err || !hw_mtu) /* fallback to port oper mtu */
+ mlx5_query_port_oper_mtu(mdev, &hw_mtu, 1);
+
+ *mtu = MLX5E_HW2SW_MTU(hw_mtu);
+}
+
+static int mlx5e_set_dev_port_mtu(struct net_device *netdev)
+{
+ struct mlx5e_priv *priv = netdev_priv(netdev);
+ u16 mtu;
+ int err;
- if (MLX5E_HW2SW_MTU(hw_mtu) != netdev->mtu)
- netdev_warn(netdev, "%s: Port MTU %d is different than netdev mtu %d\n",
- __func__, MLX5E_HW2SW_MTU(hw_mtu), netdev->mtu);
+ err = mlx5e_set_mtu(priv, netdev->mtu);
+ if (err)
+ return err;
- netdev->mtu = MLX5E_HW2SW_MTU(hw_mtu);
+ mlx5e_query_mtu(priv, &mtu);
+ if (mtu != netdev->mtu)
+ netdev_warn(netdev, "%s: VPort MTU %d is different than netdev mtu %d\n",
+ __func__, mtu, netdev->mtu);
+
+ netdev->mtu = mtu;
return 0;
}
return err;
}
+#define MXL5_HW_MIN_MTU 64
+#define MXL5E_MIN_MTU (MXL5_HW_MIN_MTU + ETH_FCS_LEN)
+
static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5_core_dev *mdev = priv->mdev;
bool was_opened;
- int max_mtu;
+ u16 max_mtu;
+ u16 min_mtu;
int err = 0;
mlx5_query_port_max_mtu(mdev, &max_mtu, 1);
max_mtu = MLX5E_HW2SW_MTU(max_mtu);
+ min_mtu = MLX5E_HW2SW_MTU(MXL5E_MIN_MTU);
- if (new_mtu > max_mtu) {
+ if (new_mtu > max_mtu || new_mtu < min_mtu) {
netdev_err(netdev,
- "%s: Bad MTU (%d) > (%d) Max\n",
- __func__, new_mtu, max_mtu);
+ "%s: Bad MTU (%d), valid range is: [%d..%d]\n",
+ __func__, new_mtu, min_mtu, max_mtu);
return -EINVAL;
}