func configureIface(ifname string, ipn ip.IP4Net, mtu int) error { iface, err := netlink.LinkByName(ifname) if err != nil { return fmt.Errorf("failed to lookup interface %v", ifname) } err = netlink.AddrAdd(iface, &netlink.Addr{ipn.ToIPNet(), ""}) if err != nil { return fmt.Errorf("failed to add IP address %v to %v: %v", ipn.String(), ifname, err) } err = netlink.LinkSetMTU(iface, mtu) if err != nil { return fmt.Errorf("failed to set MTU for %v: %v", ifname, err) } err = netlink.LinkSetUp(iface) if err != nil { return fmt.Errorf("failed to set interface %v to UP state: %v", ifname, err) } // explicitly add a route since there might be a route for a subnet already // installed by Docker and then it won't get auto added err = netlink.RouteAdd(&netlink.Route{ LinkIndex: iface.Attrs().Index, Scope: netlink.SCOPE_UNIVERSE, Dst: ipn.Network().ToIPNet(), }) if err != nil && err != syscall.EEXIST { return fmt.Errorf("Failed to add route (%v -> %v): %v", ipn.Network().String(), ifname, err) } return nil }
func configureIface(ifname string, ipn ip.IP4Net, mtu int) error { iface, err := net.InterfaceByName(ifname) if err != nil { return fmt.Errorf("failed to lookup interface %v", ifname) } n := ipn.ToIPNet() err = netlink.NetworkLinkAddIp(iface, n.IP, n) if err != nil { return fmt.Errorf("failed to add IP address %v to %v: %v", n.IP, ifname, err) } err = netlink.NetworkSetMTU(iface, mtu) if err != nil { return fmt.Errorf("failed to set MTU for %v: %v", ifname, err) } err = netlink.NetworkLinkUp(iface) if err != nil { return fmt.Errorf("failed to set interface %v to UP state: %v", ifname, err) } // explicitly add a route since there might be a route for a subnet already // installed by Docker and then it won't get auto added err = netlink.AddRoute(ipn.Network().String(), "", "", ifname) if err != nil && err != syscall.EEXIST { return fmt.Errorf("Failed to add route (%v -> %v): %v", ipn.Network().String(), ifname, err) } return nil }
func (dev *vxlanDevice) Configure(ipn ip.IP4Net) error { setAddr4(dev.link, ipn.ToIPNet()) if err := netlink.LinkSetUp(dev.link); err != nil { return fmt.Errorf("failed to set interface %s to UP state: %s", dev.link.Attrs().Name, err) } // explicitly add a route since there might be a route for a subnet already // installed by Docker and then it won't get auto added route := netlink.Route{ LinkIndex: dev.link.Attrs().Index, Scope: netlink.SCOPE_UNIVERSE, Dst: ipn.Network().ToIPNet(), } if err := netlink.RouteAdd(&route); err != nil && err != syscall.EEXIST { return fmt.Errorf("failed to add route (%s -> %s): %v", ipn.Network().String(), dev.link.Attrs().Name, err) } return nil }