sys_bsd.go raw

   1  // Copyright 2014 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  //go:build netbsd || openbsd
   6  
   7  package ipv4
   8  
   9  import (
  10  	"net"
  11  	"syscall"
  12  
  13  	"golang.org/x/net/internal/iana"
  14  	"golang.org/x/net/internal/socket"
  15  
  16  	"golang.org/x/sys/unix"
  17  )
  18  
  19  const sockoptReceiveInterface = unix.IP_RECVIF
  20  
  21  var (
  22  	ctlOpts = [ctlMax]ctlOpt{
  23  		ctlTTL:       {unix.IP_RECVTTL, 1, marshalTTL, parseTTL},
  24  		ctlDst:       {unix.IP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
  25  		ctlInterface: {unix.IP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
  26  	}
  27  
  28  	sockOpts = map[int]*sockOpt{
  29  		ssoTOS:                {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_TOS, Len: 4}},
  30  		ssoTTL:                {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_TTL, Len: 4}},
  31  		ssoMulticastTTL:       {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_MULTICAST_TTL, Len: 1}},
  32  		ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_MULTICAST_IF, Len: 4}},
  33  		ssoMulticastLoopback:  {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_MULTICAST_LOOP, Len: 1}},
  34  		ssoReceiveTTL:         {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_RECVTTL, Len: 4}},
  35  		ssoReceiveDst:         {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_RECVDSTADDR, Len: 4}},
  36  		ssoReceiveInterface:   {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_RECVIF, Len: 4}},
  37  		ssoHeaderPrepend:      {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_HDRINCL, Len: 4}},
  38  		ssoJoinGroup:          {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_ADD_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
  39  		ssoLeaveGroup:         {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_DROP_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
  40  	}
  41  )
  42