func (d *driver) CreateEndpoint(nid, eid string, epInfo driverapi.EndpointInfo, epOptions map[string]interface{}) error {
var reqIface *api.EndpointInterface
if epInfo == nil {
return fmt.Errorf("must not be called with nil EndpointInfo")
}
iface := epInfo.Interface()
if iface != nil {
addr4 := iface.Address()
addr6 := iface.AddressIPv6()
reqIface = &api.EndpointInterface{
Address: addr4.String(),
AddressIPv6: addr6.String(),
MacAddress: iface.MacAddress().String(),
}
}
create := &api.CreateEndpointRequest{
NetworkID: nid,
EndpointID: eid,
Interface: reqIface,
Options: epOptions,
}
var res api.CreateEndpointResponse
if err := d.call("CreateEndpoint", create, &res); err != nil {
return err
}
inIface, err := parseInterface(res)
if err != nil {
return err
}
if reqIface != nil && inIface != nil {
// We're not supposed to add interface if there is already
// one. Attempt to roll back
return errorWithRollback("driver attempted to add interface ignoring the one provided", d.DeleteEndpoint(nid, eid))
}
if inIface != nil {
var addr4, addr6 net.IPNet
if inIface.Address != nil {
addr4 = *(inIface.Address)
}
if inIface.AddressIPv6 != nil {
addr6 = *(inIface.AddressIPv6)
}
if err := epInfo.AddInterface(inIface.MacAddress, addr4, addr6); err != nil {
return errorWithRollback(fmt.Sprintf("failed to AddInterface %v: %s", inIface, err), d.DeleteEndpoint(nid, eid))
}
}
return nil
}
func (d *driver) CreateEndpoint(nid, eid string, epInfo driverapi.EndpointInfo,
epOptions map[string]interface{}) error {
if err := validateID(nid, eid); err != nil {
return err
}
n := d.network(nid)
if n == nil {
return fmt.Errorf("network id %q not found", nid)
}
ep := &endpoint{
id: eid,
}
if epInfo != nil && epInfo.Interface() != nil {
addr := epInfo.Interface().Address()
ep.addr = &addr
ep.mac = epInfo.Interface().MacAddress()
n.addEndpoint(ep)
return nil
}
ipID, err := d.ipAllocator.GetID()
if err != nil {
return fmt.Errorf("could not allocate ip from subnet %s: %v",
bridgeSubnet.String(), err)
}
ep.addr = &net.IPNet{
Mask: bridgeSubnet.Mask,
}
ep.addr.IP = make([]byte, 4)
binary.BigEndian.PutUint32(ep.addr.IP, bridgeSubnetInt+ipID)
ep.mac = netutils.GenerateMACFromIP(ep.addr.IP)
err = epInfo.AddInterface(ep.mac, *ep.addr, net.IPNet{})
if err != nil {
return fmt.Errorf("could not add interface to endpoint info: %v", err)
}
n.addEndpoint(ep)
return nil
}
func (d *driver) CreateEndpoint(nid, eid string, epInfo driverapi.EndpointInfo, epOptions map[string]interface{}) error {
var (
ipv6Addr *net.IPNet
err error
)
defer osl.InitOSContext()()
if epInfo == nil {
return errors.New("invalid endpoint info passed")
}
if epInfo.Interface() != nil {
return errors.New("non-nil interface passed to bridge(local) driver")
}
// Get the network handler and make sure it exists
d.Lock()
n, ok := d.networks[nid]
dconfig := d.config
d.Unlock()
if !ok {
return types.NotFoundErrorf("network %s does not exist", nid)
}
if n == nil {
return driverapi.ErrNoNetwork(nid)
}
// Sanity check
n.Lock()
if n.id != nid {
n.Unlock()
return InvalidNetworkIDError(nid)
}
n.Unlock()
// Check if endpoint id is good and retrieve correspondent endpoint
ep, err := n.getEndpoint(eid)
if err != nil {
return err
}
// Endpoint with that id exists either on desired or other sandbox
if ep != nil {
return driverapi.ErrEndpointExists(eid)
}
// Try to convert the options to endpoint configuration
epConfig, err := parseEndpointOptions(epOptions)
if err != nil {
return err
}
// Create and add the endpoint
n.Lock()
endpoint := &bridgeEndpoint{id: eid, config: epConfig}
n.endpoints[eid] = endpoint
n.Unlock()
// On failure make sure to remove the endpoint
defer func() {
if err != nil {
n.Lock()
delete(n.endpoints, eid)
n.Unlock()
}
}()
// Generate a name for what will be the host side pipe interface
hostIfName, err := netutils.GenerateIfaceName(vethPrefix, vethLen)
if err != nil {
return err
}
// Generate a name for what will be the sandbox side pipe interface
containerIfName, err := netutils.GenerateIfaceName(vethPrefix, vethLen)
if err != nil {
return err
}
// Generate and add the interface pipe host <-> sandbox
veth := &netlink.Veth{
LinkAttrs: netlink.LinkAttrs{Name: hostIfName, TxQLen: 0},
PeerName: containerIfName}
if err = netlink.LinkAdd(veth); err != nil {
return types.InternalErrorf("failed to add the host (%s) <=> sandbox (%s) pair interfaces: %v", hostIfName, containerIfName, err)
}
// Get the host side pipe interface handler
host, err := netlink.LinkByName(hostIfName)
if err != nil {
return types.InternalErrorf("failed to find host side interface %s: %v", hostIfName, err)
}
defer func() {
if err != nil {
netlink.LinkDel(host)
}
}()
// Get the sandbox side pipe interface handler
sbox, err := netlink.LinkByName(containerIfName)
if err != nil {
return types.InternalErrorf("failed to find sandbox side interface %s: %v", containerIfName, err)
}
defer func() {
if err != nil {
netlink.LinkDel(sbox)
}
}()
n.Lock()
config := n.config
n.Unlock()
// Add bridge inherited attributes to pipe interfaces
if config.Mtu != 0 {
err = netlink.LinkSetMTU(host, config.Mtu)
if err != nil {
return types.InternalErrorf("failed to set MTU on host interface %s: %v", hostIfName, err)
}
err = netlink.LinkSetMTU(sbox, config.Mtu)
if err != nil {
return types.InternalErrorf("failed to set MTU on sandbox interface %s: %v", containerIfName, err)
}
}
// Attach host side pipe interface into the bridge
if err = addToBridge(hostIfName, config.BridgeName); err != nil {
return fmt.Errorf("adding interface %s to bridge %s failed: %v", hostIfName, config.BridgeName, err)
}
if !dconfig.EnableUserlandProxy {
err = setHairpinMode(host, true)
if err != nil {
return err
}
}
// v4 address for the sandbox side pipe interface
ip4, err := ipAllocator.RequestIP(n.bridge.bridgeIPv4, nil)
if err != nil {
return err
}
ipv4Addr := &net.IPNet{IP: ip4, Mask: n.bridge.bridgeIPv4.Mask}
// Down the interface before configuring mac address.
if err = netlink.LinkSetDown(sbox); err != nil {
return fmt.Errorf("could not set link down for container interface %s: %v", containerIfName, err)
}
// Set the sbox's MAC. If specified, use the one configured by user, otherwise generate one based on IP.
mac := electMacAddress(epConfig, ip4)
err = netlink.LinkSetHardwareAddr(sbox, mac)
if err != nil {
return fmt.Errorf("could not set mac address for container interface %s: %v", containerIfName, err)
}
endpoint.macAddress = mac
// Up the host interface after finishing all netlink configuration
if err = netlink.LinkSetUp(host); err != nil {
return fmt.Errorf("could not set link up for host interface %s: %v", hostIfName, err)
}
// v6 address for the sandbox side pipe interface
ipv6Addr = &net.IPNet{}
if config.EnableIPv6 {
var ip6 net.IP
network := n.bridge.bridgeIPv6
if config.FixedCIDRv6 != nil {
network = config.FixedCIDRv6
}
ones, _ := network.Mask.Size()
if ones <= 80 {
ip6 = make(net.IP, len(network.IP))
copy(ip6, network.IP)
for i, h := range mac {
ip6[i+10] = h
}
}
ip6, err := ipAllocator.RequestIP(network, ip6)
if err != nil {
return err
}
ipv6Addr = &net.IPNet{IP: ip6, Mask: network.Mask}
}
// Create the sandbox side pipe interface
endpoint.srcName = containerIfName
endpoint.addr = ipv4Addr
if config.EnableIPv6 {
endpoint.addrv6 = ipv6Addr
}
err = epInfo.AddInterface(endpoint.macAddress, *ipv4Addr, *ipv6Addr)
if err != nil {
return err
}
// Program any required port mapping and store them in the endpoint
endpoint.portMapping, err = n.allocatePorts(epConfig, endpoint, config.DefaultBindingIP, d.config.EnableUserlandProxy)
if err != nil {
return err
}
return nil
}