Function mlx4_ifreq

dpdk/drivers/net/mlx4/mlx4_ethdev.c:147–164

* Perform ifreq ioctl() on associated Ethernet device. * * @param[in] priv * Pointer to private structure. * @param req * Request number to pass to ioctl(). * @param[out] ifr * Interface request structure output buffer. * * @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_ifreq(const struct mlx4_priv *priv, int req, struct ifreq *ifr)
{
	int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
	int ret;

	if (sock == -1) {
		rte_errno = errno;
		return -rte_errno;
	}
	ret = mlx4_get_ifname(priv, &ifr->ifr_name);
	if (!ret && ioctl(sock, req, ifr) == -1) {
		rte_errno = errno;
		ret = -rte_errno;
	}
	close(sock);
	return ret;
}

/**
 * Get MAC address by querying netdevice.