func (h *Handle) addrHandle(link Link, addr *Addr, req *nl.NetlinkRequest) error { base := link.Attrs() if addr.Label != "" && !strings.HasPrefix(addr.Label, base.Name) { return fmt.Errorf("label must begin with interface name") } h.ensureIndex(base) family := nl.GetIPFamily(addr.IP) msg := nl.NewIfAddrmsg(family) msg.Index = uint32(base.Index) msg.Scope = uint8(addr.Scope) prefixlen, _ := addr.Mask.Size() msg.Prefixlen = uint8(prefixlen) req.AddData(msg) var localAddrData []byte if family == FAMILY_V4 { localAddrData = addr.IP.To4() } else { localAddrData = addr.IP.To16() } localData := nl.NewRtAttr(syscall.IFA_LOCAL, localAddrData) req.AddData(localData) var peerAddrData []byte if addr.Peer != nil { if family == FAMILY_V4 { peerAddrData = addr.Peer.IP.To4() } else { peerAddrData = addr.Peer.IP.To16() } } else { peerAddrData = localAddrData } addressData := nl.NewRtAttr(syscall.IFA_ADDRESS, peerAddrData) req.AddData(addressData) if addr.Flags != 0 { if addr.Flags <= 0xff { msg.IfAddrmsg.Flags = uint8(addr.Flags) } else { b := make([]byte, 4) native.PutUint32(b, uint32(addr.Flags)) flagsData := nl.NewRtAttr(IFA_FLAGS, b) req.AddData(flagsData) } } if addr.Label != "" { labelData := nl.NewRtAttr(syscall.IFA_LABEL, nl.ZeroTerminated(addr.Label)) req.AddData(labelData) } _, err := req.Execute(syscall.NETLINK_ROUTE, 0) return err }
func addrHandle(link Link, addr *Addr, req *nl.NetlinkRequest) error { base := link.Attrs() if addr.Label != "" && !strings.HasPrefix(addr.Label, base.Name) { return fmt.Errorf("label must begin with interface name") } ensureIndex(base) family := nl.GetIPFamily(addr.IP) msg := nl.NewIfAddrmsg(family) msg.Index = uint32(base.Index) prefixlen, _ := addr.Mask.Size() msg.Prefixlen = uint8(prefixlen) req.AddData(msg) var addrData []byte if family == FAMILY_V4 { addrData = addr.IP.To4() } else { addrData = addr.IP.To16() } localData := nl.NewRtAttr(syscall.IFA_LOCAL, addrData) req.AddData(localData) addressData := nl.NewRtAttr(syscall.IFA_ADDRESS, addrData) req.AddData(addressData) if addr.Label != "" { labelData := nl.NewRtAttr(syscall.IFA_LABEL, nl.ZeroTerminated(addr.Label)) req.AddData(labelData) } _, err := req.Execute(syscall.NETLINK_ROUTE, 0) return err }