mlx5_port_max_linkspeed
mlx5_port_max_linkspeed(dev, &link_speed);
mlx5_port_max_linkspeed(mdev, &link_speed);
err = mlx5_port_max_linkspeed(mdev, link_speed_max);
mlx5_port_max_linkspeed);
int mlx5_port_max_linkspeed(struct mlx5_core_dev *mdev, u32 *speed);