mlx4_slaves_closest_port
port = mlx4_slaves_closest_port(dev, slave, port);
port = mlx4_slaves_closest_port(dev, slave, port);
port = mlx4_slaves_closest_port(dev, slave, port);
port = mlx4_slaves_closest_port(dev, slave, port);
port = mlx4_slaves_closest_port(dev, slave, port);
port = mlx4_slaves_closest_port(dev, slave, port);
port = mlx4_slaves_closest_port(dev, slave, port);