1 // Copyright 2013 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.
12 "golang.org/x/net/internal/iana"
13 "golang.org/x/net/internal/socket"
16 func marshal2292HopLimit(b []byte, cm *ControlMessage) []byte {
17 m := socket.ControlMessage(b)
18 m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_2292HOPLIMIT, 4)
20 socket.NativeEndian.PutUint32(m.Data(4), uint32(cm.HopLimit))
25 func marshal2292PacketInfo(b []byte, cm *ControlMessage) []byte {
26 m := socket.ControlMessage(b)
27 m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_2292PKTINFO, sizeofInet6Pktinfo)
29 pi := (*inet6Pktinfo)(unsafe.Pointer(&m.Data(sizeofInet6Pktinfo)[0]))
30 if ip := cm.Src.To16(); ip != nil && ip.To4() == nil {
34 pi.setIfindex(cm.IfIndex)
37 return m.Next(sizeofInet6Pktinfo)
40 func marshal2292NextHop(b []byte, cm *ControlMessage) []byte {
41 m := socket.ControlMessage(b)
42 m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_2292NEXTHOP, sizeofSockaddrInet6)
44 sa := (*sockaddrInet6)(unsafe.Pointer(&m.Data(sizeofSockaddrInet6)[0]))
45 sa.setSockaddr(cm.NextHop, cm.IfIndex)
47 return m.Next(sizeofSockaddrInet6)