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      1 // Copyright 2011 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 package syscall
      6 
      7 import "unsafe"
      8 
      9 func (any *anyMessage) toRoutingMessage(b []byte) RoutingMessage {
     10 	switch any.Type {
     11 	case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
     12 		p := (*RouteMessage)(unsafe.Pointer(any))
     13 		// We don't support sockaddr_mpls for now.
     14 		p.Header.Addrs &= RTA_DST | RTA_GATEWAY | RTA_NETMASK | RTA_GENMASK | RTA_IFA | RTA_IFP | RTA_BRD | RTA_AUTHOR
     15 		return &RouteMessage{Header: p.Header, Data: b[SizeofRtMsghdr:any.Msglen]}
     16 	case RTM_IFINFO:
     17 		p := (*InterfaceMessage)(unsafe.Pointer(any))
     18 		return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
     19 	case RTM_IFANNOUNCE:
     20 		p := (*InterfaceAnnounceMessage)(unsafe.Pointer(any))
     21 		return &InterfaceAnnounceMessage{Header: p.Header}
     22 	case RTM_NEWADDR, RTM_DELADDR:
     23 		p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
     24 		return &InterfaceAddrMessage{Header: p.Header, Data: b[SizeofIfaMsghdr:any.Msglen]}
     25 	}
     26 	return nil
     27 }
     28 
     29 // InterfaceAnnounceMessage represents a routing message containing
     30 // network interface arrival and departure information.
     31 //
     32 // Deprecated: Use golang.org/x/net/route instead.
     33 type InterfaceAnnounceMessage struct {
     34 	Header IfAnnounceMsghdr
     35 }
     36 
     37 func (m *InterfaceAnnounceMessage) sockaddr() ([]Sockaddr, error) { return nil, nil }
     38