Exemplo n.º 1
0
// attach a container network interface to an external network
func (v *veth) attach(n *configs.Network) (err error) {
	bridge, err := net.InterfaceByName(n.Bridge)
	if err != nil {
		return err
	}
	host, err := net.InterfaceByName(n.HostInterfaceName)
	if err != nil {
		return err
	}
	if err := netlink.AddToBridge(host, bridge); err != nil {
		return err
	}
	if err := netlink.NetworkSetMTU(host, n.Mtu); err != nil {
		return err
	}
	if n.HairpinMode {
		if err := netlink.SetHairpinMode(host, true); err != nil {
			return err
		}
	}
	if err := netlink.NetworkLinkUp(host); err != nil {
		return err
	}

	return nil
}
Exemplo n.º 2
0
func (t *TapManager) NewTap(uid, gid int) (*Tap, error) {
	tap := &Tap{Name: "flynntap." + random.String(5), bridge: t.bridge}

	if err := createTap(tap.Name, uid, gid); err != nil {
		return nil, err
	}

	var err error
	tap.IP, err = t.bridge.alloc.RequestIP(t.bridge.ipNet, nil)
	if err != nil {
		tap.Close()
		return nil, err
	}

	iface, err := net.InterfaceByName(tap.Name)
	if err != nil {
		tap.Close()
		return nil, err
	}
	if err := netlink.NetworkLinkUp(iface); err != nil {
		tap.Close()
		return nil, err
	}
	if err := netlink.AddToBridge(iface, t.bridge.iface); err != nil {
		tap.Close()
		return nil, err
	}

	return tap, nil
}
Exemplo n.º 3
0
func SetInterfaceMaster(name, master string) error {
	iface, err := net.InterfaceByName(name)
	if err != nil {
		return err
	}
	masterIface, err := net.InterfaceByName(master)
	if err != nil {
		return err
	}
	return netlink.AddToBridge(iface, masterIface)
}
Exemplo n.º 4
0
func addToBridge(ifaceName, bridgeName string) error {
	iface, err := net.InterfaceByName(ifaceName)
	if err != nil {
		return fmt.Errorf("could not find interface %s: %v", ifaceName, err)
	}

	master, err := net.InterfaceByName(bridgeName)
	if err != nil {
		return fmt.Errorf("could not find bridge %s: %v", bridgeName, err)
	}

	return bri.AddToBridge(iface, master)
}
Exemplo n.º 5
0
func (v *veth) create(n *network, nspid int) (err error) {
	tmpName, err := v.generateTempPeerName()
	if err != nil {
		return err
	}
	n.TempVethPeerName = tmpName
	defer func() {
		if err != nil {
			netlink.NetworkLinkDel(n.HostInterfaceName)
			netlink.NetworkLinkDel(n.TempVethPeerName)
		}
	}()
	if n.Bridge == "" {
		return fmt.Errorf("bridge is not specified")
	}
	bridge, err := net.InterfaceByName(n.Bridge)
	if err != nil {
		return err
	}
	if err := netlink.NetworkCreateVethPair(n.HostInterfaceName, n.TempVethPeerName, n.TxQueueLen); err != nil {
		return err
	}
	host, err := net.InterfaceByName(n.HostInterfaceName)
	if err != nil {
		return err
	}
	if err := netlink.AddToBridge(host, bridge); err != nil {
		return err
	}
	if err := netlink.NetworkSetMTU(host, n.Mtu); err != nil {
		return err
	}
	if n.HairpinMode {
		if err := netlink.SetHairpinMode(host, true); err != nil {
			return err
		}
	}
	if err := netlink.NetworkLinkUp(host); err != nil {
		return err
	}
	child, err := net.InterfaceByName(n.TempVethPeerName)
	if err != nil {
		return err
	}
	return netlink.NetworkSetNsPid(child, nspid)
}
Exemplo n.º 6
0
func (Bridge) Add(bridge, slave *net.Interface) error {
	netlinkMu.Lock()
	defer netlinkMu.Unlock()

	return netlink.AddToBridge(slave, bridge)
}