sys_windows.go raw

   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.
   4  
   5  package ipv6
   6  
   7  import (
   8  	"net"
   9  	"syscall"
  10  
  11  	"golang.org/x/net/internal/iana"
  12  	"golang.org/x/net/internal/socket"
  13  
  14  	"golang.org/x/sys/windows"
  15  )
  16  
  17  const (
  18  	sizeofSockaddrInet6 = 0x1c
  19  
  20  	sizeofIPv6Mreq     = 0x14
  21  	sizeofIPv6Mtuinfo  = 0x20
  22  	sizeofICMPv6Filter = 0
  23  )
  24  
  25  type sockaddrInet6 struct {
  26  	Family   uint16
  27  	Port     uint16
  28  	Flowinfo uint32
  29  	Addr     [16]byte /* in6_addr */
  30  	Scope_id uint32
  31  }
  32  
  33  type ipv6Mreq struct {
  34  	Multiaddr [16]byte /* in6_addr */
  35  	Interface uint32
  36  }
  37  
  38  type ipv6Mtuinfo struct {
  39  	Addr sockaddrInet6
  40  	Mtu  uint32
  41  }
  42  
  43  type icmpv6Filter struct {
  44  	// TODO(mikio): implement this
  45  }
  46  
  47  var (
  48  	ctlOpts = [ctlMax]ctlOpt{}
  49  
  50  	sockOpts = map[int]*sockOpt{
  51  		ssoHopLimit:           {Option: socket.Option{Level: iana.ProtocolIPv6, Name: windows.IPV6_UNICAST_HOPS, Len: 4}},
  52  		ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: windows.IPV6_MULTICAST_IF, Len: 4}},
  53  		ssoMulticastHopLimit:  {Option: socket.Option{Level: iana.ProtocolIPv6, Name: windows.IPV6_MULTICAST_HOPS, Len: 4}},
  54  		ssoMulticastLoopback:  {Option: socket.Option{Level: iana.ProtocolIPv6, Name: windows.IPV6_MULTICAST_LOOP, Len: 4}},
  55  		ssoJoinGroup:          {Option: socket.Option{Level: iana.ProtocolIPv6, Name: windows.IPV6_JOIN_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
  56  		ssoLeaveGroup:         {Option: socket.Option{Level: iana.ProtocolIPv6, Name: windows.IPV6_LEAVE_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
  57  	}
  58  )
  59  
  60  func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
  61  	sa.Family = syscall.AF_INET6
  62  	copy(sa.Addr[:], ip)
  63  	sa.Scope_id = uint32(i)
  64  }
  65  
  66  func (mreq *ipv6Mreq) setIfindex(i int) {
  67  	mreq.Interface = uint32(i)
  68  }
  69