40 lines
1.9 KiB
Go
40 lines
1.9 KiB
Go
|
// Copyright 2017 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
package ipv4
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net"
|
||
|
|
"syscall"
|
||
|
|
|
||
|
|
"golang.org/x/net/internal/iana"
|
||
|
|
"golang.org/x/net/internal/socket"
|
||
|
|
|
||
|
|
"golang.org/x/sys/unix"
|
||
|
|
)
|
||
|
|
|
||
|
|
const sockoptReceiveInterface = unix.IP_RECVIF
|
||
|
|
|
||
|
|
var (
|
||
|
|
ctlOpts = [ctlMax]ctlOpt{
|
||
|
|
ctlTTL: {unix.IP_RECVTTL, 1, marshalTTL, parseTTL},
|
||
|
|
ctlDst: {unix.IP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
|
||
|
|
ctlInterface: {unix.IP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
|
||
|
|
}
|
||
|
|
|
||
|
|
sockOpts = map[int]*sockOpt{
|
||
|
|
ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_TOS, Len: 4}},
|
||
|
|
ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_TTL, Len: 4}},
|
||
|
|
ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_MULTICAST_TTL, Len: 1}},
|
||
|
|
ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_MULTICAST_IF, Len: 4}},
|
||
|
|
ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_MULTICAST_LOOP, Len: 4}},
|
||
|
|
ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_RECVTTL, Len: 4}},
|
||
|
|
ssoReceiveDst: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_RECVDSTADDR, Len: 4}},
|
||
|
|
ssoReceiveInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_RECVIF, Len: 4}},
|
||
|
|
ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_HDRINCL, Len: 4}},
|
||
|
|
ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_ADD_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
|
||
|
|
ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_DROP_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
|
||
|
|
}
|
||
|
|
)
|