func createIpvlan(conf *NetConf, ifName string, netns *os.File) error {
mode, err := modeFromString(conf.Mode)
if err != nil {
return err
}
m, err := netlink.LinkByName(conf.Master)
if err != nil {
return fmt.Errorf("failed to lookup master %q: %v", conf.Master, err)
}
mv := &netlink.IPVlan{
LinkAttrs: netlink.LinkAttrs{
MTU: conf.MTU,
Name: ifName,
ParentIndex: m.Attrs().Index,
Namespace: netlink.NsFd(int(netns.Fd())),
},
Mode: mode,
}
if err := netlink.LinkAdd(mv); err != nil {
return fmt.Errorf("failed to create ipvlan: %v", err)
}
return err
}
func createMacvlan(conf *NetConf, ifName string, netns *os.File) error {
mode, err := modeFromString(conf.Mode)
if err != nil {
return err
}
m, err := netlink.LinkByName(conf.Master)
if err != nil {
return fmt.Errorf("failed to lookup master %q: %v", conf.Master, err)
}
// due to kernel bug we have to create with tmpname or it might
// collide with the name on the host and error out
tmpName, err := ip.RandomVethName()
if err != nil {
return err
}
mv := &netlink.Macvlan{
LinkAttrs: netlink.LinkAttrs{
MTU: conf.MTU,
Name: tmpName,
ParentIndex: m.Attrs().Index,
Namespace: netlink.NsFd(int(netns.Fd())),
},
Mode: mode,
}
if err := netlink.LinkAdd(mv); err != nil {
return fmt.Errorf("failed to create macvlan: %v", err)
}
return ns.WithNetNS(netns, false, func(_ *os.File) error {
err := renameLink(tmpName, ifName)
if err != nil {
return fmt.Errorf("failed to rename macvlan to %q: %v", ifName, err)
}
return nil
})
}