Function mlx4_dev_set_link

dpdk/drivers/net/mlx4/mlx4_ethdev.c:273–288

* Change the link state (UP / DOWN). * * @param priv * Pointer to Ethernet device private data. * @param up * Nonzero for link up, otherwise link down. * * @return * 0 on success, negative errno value otherwise and rte_errno is set. */

 *   0 on success, negative errno value otherwise and rte_errno is set.
 */
static int
mlx4_dev_set_link(struct mlx4_priv *priv, int up)
{
	int err;

	if (up) {
		err = mlx4_set_flags(priv, ~IFF_UP, IFF_UP);
		if (err)
			return err;
	} else {
		err = mlx4_set_flags(priv, ~IFF_UP, ~IFF_UP);
		if (err)
			return err;
	}
	return 0;
}

/**
 * DPDK callback to bring the link DOWN.