lib/connections: Support setting traffic class (fixes #3790)

lib/config/optionsconfiguration.go

@@ -41,6 +41,7 @@ type OptionsConfiguration struct {
 	OverwriteRemoteDevNames bool     `xml:"overwriteRemoteDeviceNamesOnConnect" json:"overwriteRemoteDeviceNamesOnConnect" default:"false"`
 	TempIndexMinBlocks      int      `xml:"tempIndexMinBlocks" json:"tempIndexMinBlocks" default:"10"`
 	UnackedNotificationIDs  []string `xml:"unackedNotificationID" json:"unackedNotificationIDs"`
+	TrafficClass            int      `xml:"trafficClass" json:"trafficClass"`
 
 	DeprecatedUPnPEnabled  bool     `xml:"upnpEnabled,omitempty" json:"-"`
 	DeprecatedUPnPLeaseM   int      `xml:"upnpLeaseMinutes,omitempty" json:"-"`

lib/connections/relay_dial.go

@@ -45,6 +45,11 @@ func (d *relayDialer) Dial(id protocol.DeviceID, uri *url.URL) (internalConn, er
 		return internalConn{}, err
 	}
 
+	err = dialer.SetTrafficClass(conn, d.cfg.Options().TrafficClass)
+	if err != nil {
+		l.Debugf("failed to set traffic class: %s", err)
+	}
+
 	var tc *tls.Conn
 	if inv.ServerSocket {
 		tc = tls.Server(conn, d.tlsCfg)

lib/connections/relay_listen.go

@@ -29,6 +29,7 @@ type relayListener struct {
 	onAddressesChangedNotifier
 
 	uri     *url.URL
+	cfg     *config.Wrapper
 	tlsCfg  *tls.Config
 	conns   chan internalConn
 	factory listenerFactory
@@ -79,6 +80,11 @@ func (t *relayListener) Serve() {
 				l.Infoln(err)
 			}
 
+			err = dialer.SetTrafficClass(conn, t.cfg.Options().TrafficClass)
+			if err != nil {
+				l.Debugf("failed to set traffic class: %s", err)
+			}
+
 			var tc *tls.Conn
 			if inv.ServerSocket {
 				tc = tls.Server(conn, t.tlsCfg)
@@ -170,6 +176,7 @@ type relayListenerFactory struct{}
 func (f *relayListenerFactory) New(uri *url.URL, cfg *config.Wrapper, tlsCfg *tls.Config, conns chan internalConn, natService *nat.Service) genericListener {
 	return &relayListener{
 		uri:     uri,
+		cfg:     cfg,
 		tlsCfg:  tlsCfg,
 		conns:   conns,
 		factory: f,

lib/connections/tcp_dial.go

@@ -39,6 +39,16 @@ func (d *tcpDialer) Dial(id protocol.DeviceID, uri *url.URL) (internalConn, erro
 		return internalConn{}, err
 	}
 
+	err = dialer.SetTCPOptions(conn)
+	if err != nil {
+		l.Infoln(err)
+	}
+
+	err = dialer.SetTrafficClass(conn, d.cfg.Options().TrafficClass)
+	if err != nil {
+		l.Debugf("failed to set traffic class: %s", err)
+	}
+
 	tc := tls.Client(conn, d.tlsCfg)
 	err = tlsTimedHandshake(tc)
 	if err != nil {

lib/connections/tcp_listen.go

@@ -30,6 +30,7 @@ type tcpListener struct {
 	onAddressesChangedNotifier
 
 	uri     *url.URL
+	cfg     *config.Wrapper
 	tlsCfg  *tls.Config
 	stop    chan struct{}
 	conns   chan internalConn
@@ -107,6 +108,11 @@ func (t *tcpListener) Serve() {
 			l.Infoln(err)
 		}
 
+		err = dialer.SetTrafficClass(conn, t.cfg.Options().TrafficClass)
+		if err != nil {
+			l.Debugf("failed to set traffic class: %s", err)
+		}
+
 		tc := tls.Server(conn, t.tlsCfg)
 		err = tlsTimedHandshake(tc)
 		if err != nil {
@@ -176,6 +182,7 @@ type tcpListenerFactory struct{}
 func (f *tcpListenerFactory) New(uri *url.URL, cfg *config.Wrapper, tlsCfg *tls.Config, conns chan internalConn, natService *nat.Service) genericListener {
 	return &tcpListener{
 		uri:        fixupPort(uri),
+		cfg:        cfg,
 		tlsCfg:     tlsCfg,
 		conns:      conns,
 		natService: natService,

lib/dialer/public.go

@@ -10,6 +10,9 @@ import (
 	"fmt"
 	"net"
 	"time"
+
+	"golang.org/x/net/ipv4"
+	"golang.org/x/net/ipv6"
 )
 
 // Dial tries dialing via proxy if a proxy is configured, and falls back to
@@ -75,3 +78,22 @@ func SetTCPOptions(conn net.Conn) error {
 		return fmt.Errorf("unknown connection type %T", conn)
 	}
 }
+
+func SetTrafficClass(conn net.Conn, class int) error {
+	switch conn := conn.(type) {
+	case *net.TCPConn:
+		e1 := ipv4.NewConn(conn).SetTOS(class)
+		e2 := ipv6.NewConn(conn).SetTrafficClass(class)
+
+		if e1 != nil {
+			return e1
+		}
+		return e2
+
+	case dialerConn:
+		return SetTrafficClass(conn.Conn, class)
+
+	default:
+		return fmt.Errorf("unknown connection type %T", conn)
+	}
+}

vendor/golang.org/x/net/ipv4/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/golang.org/x/net/ipv4/bpfopt_linux.go

@@ -0,0 +1,28 @@
+// Copyright 2016 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 (
+	"os"
+	"unsafe"
+
+	"golang.org/x/net/bpf"
+	"golang.org/x/net/internal/netreflect"
+)
+
+// SetBPF attaches a BPF program to the connection.
+//
+// Only supported on Linux.
+func (c *dgramOpt) SetBPF(filter []bpf.RawInstruction) error {
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	prog := sockFProg{
+		Len:    uint16(len(filter)),
+		Filter: (*sockFilter)(unsafe.Pointer(&filter[0])),
+	}
+	return os.NewSyscallError("setsockopt", setsockopt(s, sysSOL_SOCKET, sysSO_ATTACH_FILTER, unsafe.Pointer(&prog), uint32(unsafe.Sizeof(prog))))
+}

vendor/golang.org/x/net/ipv4/bpfopt_stub.go

@@ -0,0 +1,16 @@
+// Copyright 2016 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.
+
+// +build !linux
+
+package ipv4
+
+import "golang.org/x/net/bpf"
+
+// SetBPF attaches a BPF program to the connection.
+//
+// Only supported on Linux.
+func (c *dgramOpt) SetBPF(filter []bpf.RawInstruction) error {
+	return errOpNoSupport
+}

vendor/golang.org/x/net/ipv4/control.go

@@ -0,0 +1,70 @@
+// Copyright 2012 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 (
+	"fmt"
+	"net"
+	"sync"
+)
+
+type rawOpt struct {
+	sync.RWMutex
+	cflags ControlFlags
+}
+
+func (c *rawOpt) set(f ControlFlags)        { c.cflags |= f }
+func (c *rawOpt) clear(f ControlFlags)      { c.cflags &^= f }
+func (c *rawOpt) isset(f ControlFlags) bool { return c.cflags&f != 0 }
+
+type ControlFlags uint
+
+const (
+	FlagTTL       ControlFlags = 1 << iota // pass the TTL on the received packet
+	FlagSrc                                // pass the source address on the received packet
+	FlagDst                                // pass the destination address on the received packet
+	FlagInterface                          // pass the interface index on the received packet
+)
+
+// A ControlMessage represents per packet basis IP-level socket options.
+type ControlMessage struct {
+	// Receiving socket options: SetControlMessage allows to
+	// receive the options from the protocol stack using ReadFrom
+	// method of PacketConn or RawConn.
+	//
+	// Specifying socket options: ControlMessage for WriteTo
+	// method of PacketConn or RawConn allows to send the options
+	// to the protocol stack.
+	//
+	TTL     int    // time-to-live, receiving only
+	Src     net.IP // source address, specifying only
+	Dst     net.IP // destination address, receiving only
+	IfIndex int    // interface index, must be 1 <= value when specifying
+}
+
+func (cm *ControlMessage) String() string {
+	if cm == nil {
+		return "<nil>"
+	}
+	return fmt.Sprintf("ttl=%d src=%v dst=%v ifindex=%d", cm.TTL, cm.Src, cm.Dst, cm.IfIndex)
+}
+
+// Ancillary data socket options
+const (
+	ctlTTL        = iota // header field
+	ctlSrc               // header field
+	ctlDst               // header field
+	ctlInterface         // inbound or outbound interface
+	ctlPacketInfo        // inbound or outbound packet path
+	ctlMax
+)
+
+// A ctlOpt represents a binding for ancillary data socket option.
+type ctlOpt struct {
+	name    int // option name, must be equal or greater than 1
+	length  int // option length
+	marshal func([]byte, *ControlMessage) []byte
+	parse   func(*ControlMessage, []byte)
+}

vendor/golang.org/x/net/ipv4/control_bsd.go

@@ -0,0 +1,40 @@
+// Copyright 2012 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.
+
+// +build darwin dragonfly freebsd netbsd openbsd
+
+package ipv4
+
+import (
+	"net"
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/net/internal/iana"
+)
+
+func marshalDst(b []byte, cm *ControlMessage) []byte {
+	m := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
+	m.Level = iana.ProtocolIP
+	m.Type = sysIP_RECVDSTADDR
+	m.SetLen(syscall.CmsgLen(net.IPv4len))
+	return b[syscall.CmsgSpace(net.IPv4len):]
+}
+
+func parseDst(cm *ControlMessage, b []byte) {
+	cm.Dst = b[:net.IPv4len]
+}
+
+func marshalInterface(b []byte, cm *ControlMessage) []byte {
+	m := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
+	m.Level = iana.ProtocolIP
+	m.Type = sysIP_RECVIF
+	m.SetLen(syscall.CmsgLen(syscall.SizeofSockaddrDatalink))
+	return b[syscall.CmsgSpace(syscall.SizeofSockaddrDatalink):]
+}
+
+func parseInterface(cm *ControlMessage, b []byte) {
+	sadl := (*syscall.SockaddrDatalink)(unsafe.Pointer(&b[0]))
+	cm.IfIndex = int(sadl.Index)
+}

vendor/golang.org/x/net/ipv4/control_pktinfo.go

@@ -0,0 +1,37 @@
+// Copyright 2014 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.
+
+// +build darwin linux solaris
+
+package ipv4
+
+import (
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/net/internal/iana"
+)
+
+func marshalPacketInfo(b []byte, cm *ControlMessage) []byte {
+	m := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
+	m.Level = iana.ProtocolIP
+	m.Type = sysIP_PKTINFO
+	m.SetLen(syscall.CmsgLen(sizeofInetPktinfo))
+	if cm != nil {
+		pi := (*inetPktinfo)(unsafe.Pointer(&b[syscall.CmsgLen(0)]))
+		if ip := cm.Src.To4(); ip != nil {
+			copy(pi.Spec_dst[:], ip)
+		}
+		if cm.IfIndex > 0 {
+			pi.setIfindex(cm.IfIndex)
+		}
+	}
+	return b[syscall.CmsgSpace(sizeofInetPktinfo):]
+}
+
+func parsePacketInfo(cm *ControlMessage, b []byte) {
+	pi := (*inetPktinfo)(unsafe.Pointer(&b[0]))
+	cm.IfIndex = int(pi.Ifindex)
+	cm.Dst = pi.Addr[:]
+}

vendor/golang.org/x/net/ipv4/control_stub.go

@@ -0,0 +1,23 @@
+// Copyright 2012 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.
+
+// +build nacl plan9
+
+package ipv4
+
+func setControlMessage(s uintptr, opt *rawOpt, cf ControlFlags, on bool) error {
+	return errOpNoSupport
+}
+
+func newControlMessage(opt *rawOpt) []byte {
+	return nil
+}
+
+func parseControlMessage(b []byte) (*ControlMessage, error) {
+	return nil, errOpNoSupport
+}
+
+func marshalControlMessage(cm *ControlMessage) []byte {
+	return nil
+}

vendor/golang.org/x/net/ipv4/control_unix.go

@@ -0,0 +1,148 @@
+// Copyright 2012 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.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package ipv4
+
+import (
+	"os"
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/net/internal/iana"
+)
+
+func setControlMessage(s uintptr, opt *rawOpt, cf ControlFlags, on bool) error {
+	opt.Lock()
+	defer opt.Unlock()
+	if cf&FlagTTL != 0 && sockOpts[ssoReceiveTTL].name > 0 {
+		if err := setInt(s, &sockOpts[ssoReceiveTTL], boolint(on)); err != nil {
+			return err
+		}
+		if on {
+			opt.set(FlagTTL)
+		} else {
+			opt.clear(FlagTTL)
+		}
+	}
+	if sockOpts[ssoPacketInfo].name > 0 {
+		if cf&(FlagSrc|FlagDst|FlagInterface) != 0 {
+			if err := setInt(s, &sockOpts[ssoPacketInfo], boolint(on)); err != nil {
+				return err
+			}
+			if on {
+				opt.set(cf & (FlagSrc | FlagDst | FlagInterface))
+			} else {
+				opt.clear(cf & (FlagSrc | FlagDst | FlagInterface))
+			}
+		}
+	} else {
+		if cf&FlagDst != 0 && sockOpts[ssoReceiveDst].name > 0 {
+			if err := setInt(s, &sockOpts[ssoReceiveDst], boolint(on)); err != nil {
+				return err
+			}
+			if on {
+				opt.set(FlagDst)
+			} else {
+				opt.clear(FlagDst)
+			}
+		}
+		if cf&FlagInterface != 0 && sockOpts[ssoReceiveInterface].name > 0 {
+			if err := setInt(s, &sockOpts[ssoReceiveInterface], boolint(on)); err != nil {
+				return err
+			}
+			if on {
+				opt.set(FlagInterface)
+			} else {
+				opt.clear(FlagInterface)
+			}
+		}
+	}
+	return nil
+}
+
+func newControlMessage(opt *rawOpt) (oob []byte) {
+	opt.RLock()
+	var l int
+	if opt.isset(FlagTTL) && ctlOpts[ctlTTL].name > 0 {
+		l += syscall.CmsgSpace(ctlOpts[ctlTTL].length)
+	}
+	if ctlOpts[ctlPacketInfo].name > 0 {
+		if opt.isset(FlagSrc | FlagDst | FlagInterface) {
+			l += syscall.CmsgSpace(ctlOpts[ctlPacketInfo].length)
+		}
+	} else {
+		if opt.isset(FlagDst) && ctlOpts[ctlDst].name > 0 {
+			l += syscall.CmsgSpace(ctlOpts[ctlDst].length)
+		}
+		if opt.isset(FlagInterface) && ctlOpts[ctlInterface].name > 0 {
+			l += syscall.CmsgSpace(ctlOpts[ctlInterface].length)
+		}
+	}
+	if l > 0 {
+		oob = make([]byte, l)
+	}
+	opt.RUnlock()
+	return
+}
+
+func parseControlMessage(b []byte) (*ControlMessage, error) {
+	if len(b) == 0 {
+		return nil, nil
+	}
+	cmsgs, err := syscall.ParseSocketControlMessage(b)
+	if err != nil {
+		return nil, os.NewSyscallError("parse socket control message", err)
+	}
+	cm := &ControlMessage{}
+	for _, m := range cmsgs {
+		if m.Header.Level != iana.ProtocolIP {
+			continue
+		}
+		switch int(m.Header.Type) {
+		case ctlOpts[ctlTTL].name:
+			ctlOpts[ctlTTL].parse(cm, m.Data[:])
+		case ctlOpts[ctlDst].name:
+			ctlOpts[ctlDst].parse(cm, m.Data[:])
+		case ctlOpts[ctlInterface].name:
+			ctlOpts[ctlInterface].parse(cm, m.Data[:])
+		case ctlOpts[ctlPacketInfo].name:
+			ctlOpts[ctlPacketInfo].parse(cm, m.Data[:])
+		}
+	}
+	return cm, nil
+}
+
+func marshalControlMessage(cm *ControlMessage) (oob []byte) {
+	if cm == nil {
+		return nil
+	}
+	var l int
+	pktinfo := false
+	if ctlOpts[ctlPacketInfo].name > 0 && (cm.Src.To4() != nil || cm.IfIndex > 0) {
+		pktinfo = true
+		l += syscall.CmsgSpace(ctlOpts[ctlPacketInfo].length)
+	}
+	if l > 0 {
+		oob = make([]byte, l)
+		b := oob
+		if pktinfo {
+			b = ctlOpts[ctlPacketInfo].marshal(b, cm)
+		}
+	}
+	return
+}
+
+func marshalTTL(b []byte, cm *ControlMessage) []byte {
+	m := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
+	m.Level = iana.ProtocolIP
+	m.Type = sysIP_RECVTTL
+	m.SetLen(syscall.CmsgLen(1))
+	return b[syscall.CmsgSpace(1):]
+}
+
+func parseTTL(cm *ControlMessage, b []byte) {
+	cm.TTL = int(*(*byte)(unsafe.Pointer(&b[:1][0])))
+}

vendor/golang.org/x/net/ipv4/control_windows.go

@@ -0,0 +1,27 @@
+// Copyright 2012 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 "syscall"
+
+func setControlMessage(s uintptr, opt *rawOpt, cf ControlFlags, on bool) error {
+	// TODO(mikio): implement this
+	return syscall.EWINDOWS
+}
+
+func newControlMessage(opt *rawOpt) []byte {
+	// TODO(mikio): implement this
+	return nil
+}
+
+func parseControlMessage(b []byte) (*ControlMessage, error) {
+	// TODO(mikio): implement this
+	return nil, syscall.EWINDOWS
+}
+
+func marshalControlMessage(cm *ControlMessage) []byte {
+	// TODO(mikio): implement this
+	return nil
+}

vendor/golang.org/x/net/ipv4/defs_darwin.go

@@ -0,0 +1,77 @@
+// Copyright 2014 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_STRIPHDR    = C.IP_STRIPHDR
+	sysIP_RECVTTL     = C.IP_RECVTTL
+	sysIP_BOUND_IF    = C.IP_BOUND_IF
+	sysIP_PKTINFO     = C.IP_PKTINFO
+	sysIP_RECVPKTINFO = C.IP_RECVPKTINFO
+
+	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
+	sysIP_MULTICAST_VIF          = C.IP_MULTICAST_VIF
+	sysIP_MULTICAST_IFINDEX      = C.IP_MULTICAST_IFINDEX
+	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
+	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
+	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
+	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
+	sysMCAST_JOIN_GROUP          = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP         = C.MCAST_LEAVE_GROUP
+	sysMCAST_JOIN_SOURCE_GROUP   = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP  = C.MCAST_LEAVE_SOURCE_GROUP
+	sysMCAST_BLOCK_SOURCE        = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE      = C.MCAST_UNBLOCK_SOURCE
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+	sizeofInetPktinfo     = C.sizeof_struct_in_pktinfo
+
+	sizeofIPMreq         = C.sizeof_struct_ip_mreq
+	sizeofIPMreqn        = C.sizeof_struct_ip_mreqn
+	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+)
+
+type sockaddrStorage C.struct_sockaddr_storage
+
+type sockaddrInet C.struct_sockaddr_in
+
+type inetPktinfo C.struct_in_pktinfo
+
+type ipMreq C.struct_ip_mreq
+
+type ipMreqn C.struct_ip_mreqn
+
+type ipMreqSource C.struct_ip_mreq_source
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req

vendor/golang.org/x/net/ipv4/defs_dragonfly.go

@@ -0,0 +1,38 @@
+// Copyright 2014 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_RECVTTL     = C.IP_RECVTTL
+
+	sysIP_MULTICAST_IF    = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL   = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP  = C.IP_MULTICAST_LOOP
+	sysIP_MULTICAST_VIF   = C.IP_MULTICAST_VIF
+	sysIP_ADD_MEMBERSHIP  = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP = C.IP_DROP_MEMBERSHIP
+
+	sizeofIPMreq = C.sizeof_struct_ip_mreq
+)
+
+type ipMreq C.struct_ip_mreq

vendor/golang.org/x/net/ipv4/defs_freebsd.go

@@ -0,0 +1,75 @@
+// Copyright 2014 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_SENDSRCADDR = C.IP_SENDSRCADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_ONESBCAST   = C.IP_ONESBCAST
+	sysIP_BINDANY     = C.IP_BINDANY
+	sysIP_RECVTTL     = C.IP_RECVTTL
+	sysIP_MINTTL      = C.IP_MINTTL
+	sysIP_DONTFRAG    = C.IP_DONTFRAG
+	sysIP_RECVTOS     = C.IP_RECVTOS
+
+	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
+	sysIP_MULTICAST_VIF          = C.IP_MULTICAST_VIF
+	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
+	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
+	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
+	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
+	sysMCAST_JOIN_GROUP          = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP         = C.MCAST_LEAVE_GROUP
+	sysMCAST_JOIN_SOURCE_GROUP   = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP  = C.MCAST_LEAVE_SOURCE_GROUP
+	sysMCAST_BLOCK_SOURCE        = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE      = C.MCAST_UNBLOCK_SOURCE
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+
+	sizeofIPMreq         = C.sizeof_struct_ip_mreq
+	sizeofIPMreqn        = C.sizeof_struct_ip_mreqn
+	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+)
+
+type sockaddrStorage C.struct_sockaddr_storage
+
+type sockaddrInet C.struct_sockaddr_in
+
+type ipMreq C.struct_ip_mreq
+
+type ipMreqn C.struct_ip_mreqn
+
+type ipMreqSource C.struct_ip_mreq_source
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req

vendor/golang.org/x/net/ipv4/defs_linux.go

@@ -0,0 +1,120 @@
+// Copyright 2014 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <time.h>
+
+#include <linux/errqueue.h>
+#include <linux/icmp.h>
+#include <linux/in.h>
+#include <linux/filter.h>
+#include <sys/socket.h>
+*/
+import "C"
+
+const (
+	sysIP_TOS             = C.IP_TOS
+	sysIP_TTL             = C.IP_TTL
+	sysIP_HDRINCL         = C.IP_HDRINCL
+	sysIP_OPTIONS         = C.IP_OPTIONS
+	sysIP_ROUTER_ALERT    = C.IP_ROUTER_ALERT
+	sysIP_RECVOPTS        = C.IP_RECVOPTS
+	sysIP_RETOPTS         = C.IP_RETOPTS
+	sysIP_PKTINFO         = C.IP_PKTINFO
+	sysIP_PKTOPTIONS      = C.IP_PKTOPTIONS
+	sysIP_MTU_DISCOVER    = C.IP_MTU_DISCOVER
+	sysIP_RECVERR         = C.IP_RECVERR
+	sysIP_RECVTTL         = C.IP_RECVTTL
+	sysIP_RECVTOS         = C.IP_RECVTOS
+	sysIP_MTU             = C.IP_MTU
+	sysIP_FREEBIND        = C.IP_FREEBIND
+	sysIP_TRANSPARENT     = C.IP_TRANSPARENT
+	sysIP_RECVRETOPTS     = C.IP_RECVRETOPTS
+	sysIP_ORIGDSTADDR     = C.IP_ORIGDSTADDR
+	sysIP_RECVORIGDSTADDR = C.IP_RECVORIGDSTADDR
+	sysIP_MINTTL          = C.IP_MINTTL
+	sysIP_NODEFRAG        = C.IP_NODEFRAG
+	sysIP_UNICAST_IF      = C.IP_UNICAST_IF
+
+	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
+	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
+	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
+	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
+	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
+	sysIP_MSFILTER               = C.IP_MSFILTER
+	sysMCAST_JOIN_GROUP          = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP         = C.MCAST_LEAVE_GROUP
+	sysMCAST_JOIN_SOURCE_GROUP   = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP  = C.MCAST_LEAVE_SOURCE_GROUP
+	sysMCAST_BLOCK_SOURCE        = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE      = C.MCAST_UNBLOCK_SOURCE
+	sysMCAST_MSFILTER            = C.MCAST_MSFILTER
+	sysIP_MULTICAST_ALL          = C.IP_MULTICAST_ALL
+
+	//sysIP_PMTUDISC_DONT      = C.IP_PMTUDISC_DONT
+	//sysIP_PMTUDISC_WANT      = C.IP_PMTUDISC_WANT
+	//sysIP_PMTUDISC_DO        = C.IP_PMTUDISC_DO
+	//sysIP_PMTUDISC_PROBE     = C.IP_PMTUDISC_PROBE
+	//sysIP_PMTUDISC_INTERFACE = C.IP_PMTUDISC_INTERFACE
+	//sysIP_PMTUDISC_OMIT      = C.IP_PMTUDISC_OMIT
+
+	sysICMP_FILTER = C.ICMP_FILTER
+
+	sysSO_EE_ORIGIN_NONE         = C.SO_EE_ORIGIN_NONE
+	sysSO_EE_ORIGIN_LOCAL        = C.SO_EE_ORIGIN_LOCAL
+	sysSO_EE_ORIGIN_ICMP         = C.SO_EE_ORIGIN_ICMP
+	sysSO_EE_ORIGIN_ICMP6        = C.SO_EE_ORIGIN_ICMP6
+	sysSO_EE_ORIGIN_TXSTATUS     = C.SO_EE_ORIGIN_TXSTATUS
+	sysSO_EE_ORIGIN_TIMESTAMPING = C.SO_EE_ORIGIN_TIMESTAMPING
+
+	sysSOL_SOCKET       = C.SOL_SOCKET
+	sysSO_ATTACH_FILTER = C.SO_ATTACH_FILTER
+
+	sizeofKernelSockaddrStorage = C.sizeof_struct___kernel_sockaddr_storage
+	sizeofSockaddrInet          = C.sizeof_struct_sockaddr_in
+	sizeofInetPktinfo           = C.sizeof_struct_in_pktinfo
+	sizeofSockExtendedErr       = C.sizeof_struct_sock_extended_err
+
+	sizeofIPMreq         = C.sizeof_struct_ip_mreq
+	sizeofIPMreqn        = C.sizeof_struct_ip_mreqn
+	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+
+	sizeofICMPFilter = C.sizeof_struct_icmp_filter
+)
+
+type kernelSockaddrStorage C.struct___kernel_sockaddr_storage
+
+type sockaddrInet C.struct_sockaddr_in
+
+type inetPktinfo C.struct_in_pktinfo
+
+type sockExtendedErr C.struct_sock_extended_err
+
+type ipMreq C.struct_ip_mreq
+
+type ipMreqn C.struct_ip_mreqn
+
+type ipMreqSource C.struct_ip_mreq_source
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req
+
+type icmpFilter C.struct_icmp_filter
+
+type sockFProg C.struct_sock_fprog
+
+type sockFilter C.struct_sock_filter

vendor/golang.org/x/net/ipv4/defs_netbsd.go

@@ -0,0 +1,37 @@
+// Copyright 2014 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_RECVTTL     = C.IP_RECVTTL
+
+	sysIP_MULTICAST_IF    = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL   = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP  = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP  = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP = C.IP_DROP_MEMBERSHIP
+
+	sizeofIPMreq = C.sizeof_struct_ip_mreq
+)
+
+type ipMreq C.struct_ip_mreq

vendor/golang.org/x/net/ipv4/defs_openbsd.go

@@ -0,0 +1,37 @@
+// Copyright 2014 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_RECVTTL     = C.IP_RECVTTL
+
+	sysIP_MULTICAST_IF    = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL   = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP  = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP  = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP = C.IP_DROP_MEMBERSHIP
+
+	sizeofIPMreq = C.sizeof_struct_ip_mreq
+)
+
+type ipMreq C.struct_ip_mreq

vendor/golang.org/x/net/ipv4/defs_solaris.go

@@ -0,0 +1,84 @@
+// Copyright 2014 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_RECVSLLA    = C.IP_RECVSLLA
+	sysIP_RECVTTL     = C.IP_RECVTTL
+
+	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
+	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
+	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
+	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
+	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
+	sysIP_NEXTHOP                = C.IP_NEXTHOP
+
+	sysIP_PKTINFO     = C.IP_PKTINFO
+	sysIP_RECVPKTINFO = C.IP_RECVPKTINFO
+	sysIP_DONTFRAG    = C.IP_DONTFRAG
+
+	sysIP_BOUND_IF      = C.IP_BOUND_IF
+	sysIP_UNSPEC_SRC    = C.IP_UNSPEC_SRC
+	sysIP_BROADCAST_TTL = C.IP_BROADCAST_TTL
+	sysIP_DHCPINIT_IF   = C.IP_DHCPINIT_IF
+
+	sysIP_REUSEADDR = C.IP_REUSEADDR
+	sysIP_DONTROUTE = C.IP_DONTROUTE
+	sysIP_BROADCAST = C.IP_BROADCAST
+
+	sysMCAST_JOIN_GROUP         = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP        = C.MCAST_LEAVE_GROUP
+	sysMCAST_BLOCK_SOURCE       = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE     = C.MCAST_UNBLOCK_SOURCE
+	sysMCAST_JOIN_SOURCE_GROUP  = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP = C.MCAST_LEAVE_SOURCE_GROUP
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+	sizeofInetPktinfo     = C.sizeof_struct_in_pktinfo
+
+	sizeofIPMreq         = C.sizeof_struct_ip_mreq
+	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+)
+
+type sockaddrStorage C.struct_sockaddr_storage
+
+type sockaddrInet C.struct_sockaddr_in
+
+type inetPktinfo C.struct_in_pktinfo
+
+type ipMreq C.struct_ip_mreq
+
+type ipMreqSource C.struct_ip_mreq_source
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req

vendor/golang.org/x/net/ipv4/dgramopt_posix.go

@@ -0,0 +1,253 @@
+// Copyright 2012 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.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris windows
+
+package ipv4
+
+import (
+	"net"
+	"syscall"
+
+	"golang.org/x/net/internal/netreflect"
+)
+
+// MulticastTTL returns the time-to-live field value for outgoing
+// multicast packets.
+func (c *dgramOpt) MulticastTTL() (int, error) {
+	if !c.ok() {
+		return 0, syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return 0, err
+	}
+	return getInt(s, &sockOpts[ssoMulticastTTL])
+}
+
+// SetMulticastTTL sets the time-to-live field value for future
+// outgoing multicast packets.
+func (c *dgramOpt) SetMulticastTTL(ttl int) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setInt(s, &sockOpts[ssoMulticastTTL], ttl)
+}
+
+// MulticastInterface returns the default interface for multicast
+// packet transmissions.
+func (c *dgramOpt) MulticastInterface() (*net.Interface, error) {
+	if !c.ok() {
+		return nil, syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return nil, err
+	}
+	return getInterface(s, &sockOpts[ssoMulticastInterface])
+}
+
+// SetMulticastInterface sets the default interface for future
+// multicast packet transmissions.
+func (c *dgramOpt) SetMulticastInterface(ifi *net.Interface) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setInterface(s, &sockOpts[ssoMulticastInterface], ifi)
+}
+
+// MulticastLoopback reports whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) MulticastLoopback() (bool, error) {
+	if !c.ok() {
+		return false, syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return false, err
+	}
+	on, err := getInt(s, &sockOpts[ssoMulticastLoopback])
+	if err != nil {
+		return false, err
+	}
+	return on == 1, nil
+}
+
+// SetMulticastLoopback sets whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) SetMulticastLoopback(on bool) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setInt(s, &sockOpts[ssoMulticastLoopback], boolint(on))
+}
+
+// JoinGroup joins the group address group on the interface ifi.
+// By default all sources that can cast data to group are accepted.
+// It's possible to mute and unmute data transmission from a specific
+// source by using ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup.
+// JoinGroup uses the system assigned multicast interface when ifi is
+// nil, although this is not recommended because the assignment
+// depends on platforms and sometimes it might require routing
+// configuration.
+func (c *dgramOpt) JoinGroup(ifi *net.Interface, group net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP4(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	return setGroup(s, &sockOpts[ssoJoinGroup], ifi, grp)
+}
+
+// LeaveGroup leaves the group address group on the interface ifi
+// regardless of whether the group is any-source group or
+// source-specific group.
+func (c *dgramOpt) LeaveGroup(ifi *net.Interface, group net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP4(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	return setGroup(s, &sockOpts[ssoLeaveGroup], ifi, grp)
+}
+
+// JoinSourceSpecificGroup joins the source-specific group comprising
+// group and source on the interface ifi.
+// JoinSourceSpecificGroup uses the system assigned multicast
+// interface when ifi is nil, although this is not recommended because
+// the assignment depends on platforms and sometimes it might require
+// routing configuration.
+func (c *dgramOpt) JoinSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP4(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	src := netAddrToIP4(source)
+	if src == nil {
+		return errMissingAddress
+	}
+	return setSourceGroup(s, &sockOpts[ssoJoinSourceGroup], ifi, grp, src)
+}
+
+// LeaveSourceSpecificGroup leaves the source-specific group on the
+// interface ifi.
+func (c *dgramOpt) LeaveSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP4(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	src := netAddrToIP4(source)
+	if src == nil {
+		return errMissingAddress
+	}
+	return setSourceGroup(s, &sockOpts[ssoLeaveSourceGroup], ifi, grp, src)
+}
+
+// ExcludeSourceSpecificGroup excludes the source-specific group from
+// the already joined any-source groups by JoinGroup on the interface
+// ifi.
+func (c *dgramOpt) ExcludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP4(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	src := netAddrToIP4(source)
+	if src == nil {
+		return errMissingAddress
+	}
+	return setSourceGroup(s, &sockOpts[ssoBlockSourceGroup], ifi, grp, src)
+}
+
+// IncludeSourceSpecificGroup includes the excluded source-specific
+// group by ExcludeSourceSpecificGroup again on the interface ifi.
+func (c *dgramOpt) IncludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP4(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	src := netAddrToIP4(source)
+	if src == nil {
+		return errMissingAddress
+	}
+	return setSourceGroup(s, &sockOpts[ssoUnblockSourceGroup], ifi, grp, src)
+}
+
+// ICMPFilter returns an ICMP filter.
+// Currently only Linux supports this.
+func (c *dgramOpt) ICMPFilter() (*ICMPFilter, error) {
+	if !c.ok() {
+		return nil, syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return nil, err
+	}
+	return getICMPFilter(s, &sockOpts[ssoICMPFilter])
+}
+
+// SetICMPFilter deploys the ICMP filter.
+// Currently only Linux supports this.
+func (c *dgramOpt) SetICMPFilter(f *ICMPFilter) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setICMPFilter(s, &sockOpts[ssoICMPFilter], f)
+}

vendor/golang.org/x/net/ipv4/dgramopt_stub.go

@@ -0,0 +1,106 @@
+// Copyright 2012 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.
+
+// +build nacl plan9
+
+package ipv4
+
+import "net"
+
+// MulticastTTL returns the time-to-live field value for outgoing
+// multicast packets.
+func (c *dgramOpt) MulticastTTL() (int, error) {
+	return 0, errOpNoSupport
+}
+
+// SetMulticastTTL sets the time-to-live field value for future
+// outgoing multicast packets.
+func (c *dgramOpt) SetMulticastTTL(ttl int) error {
+	return errOpNoSupport
+}
+
+// MulticastInterface returns the default interface for multicast
+// packet transmissions.
+func (c *dgramOpt) MulticastInterface() (*net.Interface, error) {
+	return nil, errOpNoSupport
+}
+
+// SetMulticastInterface sets the default interface for future
+// multicast packet transmissions.
+func (c *dgramOpt) SetMulticastInterface(ifi *net.Interface) error {
+	return errOpNoSupport
+}
+
+// MulticastLoopback reports whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) MulticastLoopback() (bool, error) {
+	return false, errOpNoSupport
+}
+
+// SetMulticastLoopback sets whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) SetMulticastLoopback(on bool) error {
+	return errOpNoSupport
+}
+
+// JoinGroup joins the group address group on the interface ifi.
+// By default all sources that can cast data to group are accepted.
+// It's possible to mute and unmute data transmission from a specific
+// source by using ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup.
+// JoinGroup uses the system assigned multicast interface when ifi is
+// nil, although this is not recommended because the assignment
+// depends on platforms and sometimes it might require routing
+// configuration.
+func (c *dgramOpt) JoinGroup(ifi *net.Interface, group net.Addr) error {
+	return errOpNoSupport
+}
+
+// LeaveGroup leaves the group address group on the interface ifi
+// regardless of whether the group is any-source group or
+// source-specific group.
+func (c *dgramOpt) LeaveGroup(ifi *net.Interface, group net.Addr) error {
+	return errOpNoSupport
+}
+
+// JoinSourceSpecificGroup joins the source-specific group comprising
+// group and source on the interface ifi.
+// JoinSourceSpecificGroup uses the system assigned multicast
+// interface when ifi is nil, although this is not recommended because
+// the assignment depends on platforms and sometimes it might require
+// routing configuration.
+func (c *dgramOpt) JoinSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	return errOpNoSupport
+}
+
+// LeaveSourceSpecificGroup leaves the source-specific group on the
+// interface ifi.
+func (c *dgramOpt) LeaveSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	return errOpNoSupport
+}
+
+// ExcludeSourceSpecificGroup excludes the source-specific group from
+// the already joined any-source groups by JoinGroup on the interface
+// ifi.
+func (c *dgramOpt) ExcludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	return errOpNoSupport
+}
+
+// IncludeSourceSpecificGroup includes the excluded source-specific
+// group by ExcludeSourceSpecificGroup again on the interface ifi.
+func (c *dgramOpt) IncludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	return errOpNoSupport
+}
+
+// ICMPFilter returns an ICMP filter.
+// Currently only Linux supports this.
+func (c *dgramOpt) ICMPFilter() (*ICMPFilter, error) {
+	return nil, errOpNoSupport
+}
+
+// SetICMPFilter deploys the ICMP filter.
+// Currently only Linux supports this.
+func (c *dgramOpt) SetICMPFilter(f *ICMPFilter) error {
+	return errOpNoSupport
+}

vendor/golang.org/x/net/ipv4/doc.go

@@ -0,0 +1,244 @@
+// Copyright 2012 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 implements IP-level socket options for the Internet
+// Protocol version 4.
+//
+// The package provides IP-level socket options that allow
+// manipulation of IPv4 facilities.
+//
+// The IPv4 protocol and basic host requirements for IPv4 are defined
+// in RFC 791 and RFC 1122.
+// Host extensions for multicasting and socket interface extensions
+// for multicast source filters are defined in RFC 1112 and RFC 3678.
+// IGMPv1, IGMPv2 and IGMPv3 are defined in RFC 1112, RFC 2236 and RFC
+// 3376.
+// Source-specific multicast is defined in RFC 4607.
+//
+//
+// Unicasting
+//
+// The options for unicasting are available for net.TCPConn,
+// net.UDPConn and net.IPConn which are created as network connections
+// that use the IPv4 transport.  When a single TCP connection carrying
+// a data flow of multiple packets needs to indicate the flow is
+// important, ipv4.Conn is used to set the type-of-service field on
+// the IPv4 header for each packet.
+//
+//	ln, err := net.Listen("tcp4", "0.0.0.0:1024")
+//	if err != nil {
+//		// error handling
+//	}
+//	defer ln.Close()
+//	for {
+//		c, err := ln.Accept()
+//		if err != nil {
+//			// error handling
+//		}
+//		go func(c net.Conn) {
+//			defer c.Close()
+//
+// The outgoing packets will be labeled DiffServ assured forwarding
+// class 1 low drop precedence, known as AF11 packets.
+//
+//			if err := ipv4.NewConn(c).SetTOS(0x28); err != nil {
+//				// error handling
+//			}
+//			if _, err := c.Write(data); err != nil {
+//				// error handling
+//			}
+//		}(c)
+//	}
+//
+//
+// Multicasting
+//
+// The options for multicasting are available for net.UDPConn and
+// net.IPconn which are created as network connections that use the
+// IPv4 transport.  A few network facilities must be prepared before
+// you begin multicasting, at a minimum joining network interfaces and
+// multicast groups.
+//
+//	en0, err := net.InterfaceByName("en0")
+//	if err != nil {
+//		// error handling
+//	}
+//	en1, err := net.InterfaceByIndex(911)
+//	if err != nil {
+//		// error handling
+//	}
+//	group := net.IPv4(224, 0, 0, 250)
+//
+// First, an application listens to an appropriate address with an
+// appropriate service port.
+//
+//	c, err := net.ListenPacket("udp4", "0.0.0.0:1024")
+//	if err != nil {
+//		// error handling
+//	}
+//	defer c.Close()
+//
+// Second, the application joins multicast groups, starts listening to
+// the groups on the specified network interfaces.  Note that the
+// service port for transport layer protocol does not matter with this
+// operation as joining groups affects only network and link layer
+// protocols, such as IPv4 and Ethernet.
+//
+//	p := ipv4.NewPacketConn(c)
+//	if err := p.JoinGroup(en0, &net.UDPAddr{IP: group}); err != nil {
+//		// error handling
+//	}
+//	if err := p.JoinGroup(en1, &net.UDPAddr{IP: group}); err != nil {
+//		// error handling
+//	}
+//
+// The application might set per packet control message transmissions
+// between the protocol stack within the kernel.  When the application
+// needs a destination address on an incoming packet,
+// SetControlMessage of ipv4.PacketConn is used to enable control
+// message transmissions.
+//
+//	if err := p.SetControlMessage(ipv4.FlagDst, true); err != nil {
+//		// error handling
+//	}
+//
+// The application could identify whether the received packets are
+// of interest by using the control message that contains the
+// destination address of the received packet.
+//
+//	b := make([]byte, 1500)
+//	for {
+//		n, cm, src, err := p.ReadFrom(b)
+//		if err != nil {
+//			// error handling
+//		}
+//		if cm.Dst.IsMulticast() {
+//			if cm.Dst.Equal(group) {
+//				// joined group, do something
+//			} else {
+//				// unknown group, discard
+//				continue
+//			}
+//		}
+//
+// The application can also send both unicast and multicast packets.
+//
+//		p.SetTOS(0x0)
+//		p.SetTTL(16)
+//		if _, err := p.WriteTo(data, nil, src); err != nil {
+//			// error handling
+//		}
+//		dst := &net.UDPAddr{IP: group, Port: 1024}
+//		for _, ifi := range []*net.Interface{en0, en1} {
+//			if err := p.SetMulticastInterface(ifi); err != nil {
+//				// error handling
+//			}
+//			p.SetMulticastTTL(2)
+//			if _, err := p.WriteTo(data, nil, dst); err != nil {
+//				// error handling
+//			}
+//		}
+//	}
+//
+//
+// More multicasting
+//
+// An application that uses PacketConn or RawConn may join multiple
+// multicast groups.  For example, a UDP listener with port 1024 might
+// join two different groups across over two different network
+// interfaces by using:
+//
+//	c, err := net.ListenPacket("udp4", "0.0.0.0:1024")
+//	if err != nil {
+//		// error handling
+//	}
+//	defer c.Close()
+//	p := ipv4.NewPacketConn(c)
+//	if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
+//		// error handling
+//	}
+//	if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 249)}); err != nil {
+//		// error handling
+//	}
+//	if err := p.JoinGroup(en1, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 249)}); err != nil {
+//		// error handling
+//	}
+//
+// It is possible for multiple UDP listeners that listen on the same
+// UDP port to join the same multicast group.  The net package will
+// provide a socket that listens to a wildcard address with reusable
+// UDP port when an appropriate multicast address prefix is passed to
+// the net.ListenPacket or net.ListenUDP.
+//
+//	c1, err := net.ListenPacket("udp4", "224.0.0.0:1024")
+//	if err != nil {
+//		// error handling
+//	}
+//	defer c1.Close()
+//	c2, err := net.ListenPacket("udp4", "224.0.0.0:1024")
+//	if err != nil {
+//		// error handling
+//	}
+//	defer c2.Close()
+//	p1 := ipv4.NewPacketConn(c1)
+//	if err := p1.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
+//		// error handling
+//	}
+//	p2 := ipv4.NewPacketConn(c2)
+//	if err := p2.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
+//		// error handling
+//	}
+//
+// Also it is possible for the application to leave or rejoin a
+// multicast group on the network interface.
+//
+//	if err := p.LeaveGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
+//		// error handling
+//	}
+//	if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 250)}); err != nil {
+//		// error handling
+//	}
+//
+//
+// Source-specific multicasting
+//
+// An application that uses PacketConn or RawConn on IGMPv3 supported
+// platform is able to join source-specific multicast groups.
+// The application may use JoinSourceSpecificGroup and
+// LeaveSourceSpecificGroup for the operation known as "include" mode,
+//
+//	ssmgroup := net.UDPAddr{IP: net.IPv4(232, 7, 8, 9)}
+//	ssmsource := net.UDPAddr{IP: net.IPv4(192, 168, 0, 1)})
+//	if err := p.JoinSourceSpecificGroup(en0, &ssmgroup, &ssmsource); err != nil {
+//		// error handling
+//	}
+//	if err := p.LeaveSourceSpecificGroup(en0, &ssmgroup, &ssmsource); err != nil {
+//		// error handling
+//	}
+//
+// or JoinGroup, ExcludeSourceSpecificGroup,
+// IncludeSourceSpecificGroup and LeaveGroup for the operation known
+// as "exclude" mode.
+//
+//	exclsource := net.UDPAddr{IP: net.IPv4(192, 168, 0, 254)}
+//	if err := p.JoinGroup(en0, &ssmgroup); err != nil {
+//		// error handling
+//	}
+//	if err := p.ExcludeSourceSpecificGroup(en0, &ssmgroup, &exclsource); err != nil {
+//		// error handling
+//	}
+//	if err := p.LeaveGroup(en0, &ssmgroup); err != nil {
+//		// error handling
+//	}
+//
+// Note that it depends on each platform implementation what happens
+// when an application which runs on IGMPv3 unsupported platform uses
+// JoinSourceSpecificGroup and LeaveSourceSpecificGroup.
+// In general the platform tries to fall back to conversations using
+// IGMPv1 or IGMPv2 and starts to listen to multicast traffic.
+// In the fallback case, ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup may return an error.
+package ipv4 // import "golang.org/x/net/ipv4"
+
+// BUG(mikio): This package is not implemented on NaCl and Plan 9.

vendor/golang.org/x/net/ipv4/endpoint.go

@@ -0,0 +1,194 @@
+// Copyright 2012 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"
+	"time"
+
+	"golang.org/x/net/internal/netreflect"
+)
+
+// BUG(mikio): On Windows, the JoinSourceSpecificGroup,
+// LeaveSourceSpecificGroup, ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup methods of PacketConn and RawConn are
+// not implemented.
+
+// A Conn represents a network endpoint that uses the IPv4 transport.
+// It is used to control basic IP-level socket options such as TOS and
+// TTL.
+type Conn struct {
+	genericOpt
+}
+
+type genericOpt struct {
+	net.Conn
+}
+
+func (c *genericOpt) ok() bool { return c != nil && c.Conn != nil }
+
+// NewConn returns a new Conn.
+func NewConn(c net.Conn) *Conn {
+	return &Conn{
+		genericOpt: genericOpt{Conn: c},
+	}
+}
+
+// A PacketConn represents a packet network endpoint that uses the
+// IPv4 transport.  It is used to control several IP-level socket
+// options including multicasting.  It also provides datagram based
+// network I/O methods specific to the IPv4 and higher layer protocols
+// such as UDP.
+type PacketConn struct {
+	genericOpt
+	dgramOpt
+	payloadHandler
+}
+
+type dgramOpt struct {
+	net.PacketConn
+}
+
+func (c *dgramOpt) ok() bool { return c != nil && c.PacketConn != nil }
+
+// SetControlMessage sets the per packet IP-level socket options.
+func (c *PacketConn) SetControlMessage(cf ControlFlags, on bool) error {
+	if !c.payloadHandler.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.dgramOpt.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setControlMessage(s, &c.payloadHandler.rawOpt, cf, on)
+}
+
+// SetDeadline sets the read and write deadlines associated with the
+// endpoint.
+func (c *PacketConn) SetDeadline(t time.Time) error {
+	if !c.payloadHandler.ok() {
+		return syscall.EINVAL
+	}
+	return c.payloadHandler.PacketConn.SetDeadline(t)
+}
+
+// SetReadDeadline sets the read deadline associated with the
+// endpoint.
+func (c *PacketConn) SetReadDeadline(t time.Time) error {
+	if !c.payloadHandler.ok() {
+		return syscall.EINVAL
+	}
+	return c.payloadHandler.PacketConn.SetReadDeadline(t)
+}
+
+// SetWriteDeadline sets the write deadline associated with the
+// endpoint.
+func (c *PacketConn) SetWriteDeadline(t time.Time) error {
+	if !c.payloadHandler.ok() {
+		return syscall.EINVAL
+	}
+	return c.payloadHandler.PacketConn.SetWriteDeadline(t)
+}
+
+// Close closes the endpoint.
+func (c *PacketConn) Close() error {
+	if !c.payloadHandler.ok() {
+		return syscall.EINVAL
+	}
+	return c.payloadHandler.PacketConn.Close()
+}
+
+// NewPacketConn returns a new PacketConn using c as its underlying
+// transport.
+func NewPacketConn(c net.PacketConn) *PacketConn {
+	p := &PacketConn{
+		genericOpt:     genericOpt{Conn: c.(net.Conn)},
+		dgramOpt:       dgramOpt{PacketConn: c},
+		payloadHandler: payloadHandler{PacketConn: c},
+	}
+	if _, ok := c.(*net.IPConn); ok && sockOpts[ssoStripHeader].name > 0 {
+		if s, err := netreflect.PacketSocketOf(c); err == nil {
+			setInt(s, &sockOpts[ssoStripHeader], boolint(true))
+		}
+	}
+	return p
+}
+
+// A RawConn represents a packet network endpoint that uses the IPv4
+// transport.  It is used to control several IP-level socket options
+// including IPv4 header manipulation.  It also provides datagram
+// based network I/O methods specific to the IPv4 and higher layer
+// protocols that handle IPv4 datagram directly such as OSPF, GRE.
+type RawConn struct {
+	genericOpt
+	dgramOpt
+	packetHandler
+}
+
+// SetControlMessage sets the per packet IP-level socket options.
+func (c *RawConn) SetControlMessage(cf ControlFlags, on bool) error {
+	if !c.packetHandler.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.dgramOpt.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setControlMessage(s, &c.packetHandler.rawOpt, cf, on)
+}
+
+// SetDeadline sets the read and write deadlines associated with the
+// endpoint.
+func (c *RawConn) SetDeadline(t time.Time) error {
+	if !c.packetHandler.ok() {
+		return syscall.EINVAL
+	}
+	return c.packetHandler.c.SetDeadline(t)
+}
+
+// SetReadDeadline sets the read deadline associated with the
+// endpoint.
+func (c *RawConn) SetReadDeadline(t time.Time) error {
+	if !c.packetHandler.ok() {
+		return syscall.EINVAL
+	}
+	return c.packetHandler.c.SetReadDeadline(t)
+}
+
+// SetWriteDeadline sets the write deadline associated with the
+// endpoint.
+func (c *RawConn) SetWriteDeadline(t time.Time) error {
+	if !c.packetHandler.ok() {
+		return syscall.EINVAL
+	}
+	return c.packetHandler.c.SetWriteDeadline(t)
+}
+
+// Close closes the endpoint.
+func (c *RawConn) Close() error {
+	if !c.packetHandler.ok() {
+		return syscall.EINVAL
+	}
+	return c.packetHandler.c.Close()
+}
+
+// NewRawConn returns a new RawConn using c as its underlying
+// transport.
+func NewRawConn(c net.PacketConn) (*RawConn, error) {
+	r := &RawConn{
+		genericOpt:    genericOpt{Conn: c.(net.Conn)},
+		dgramOpt:      dgramOpt{PacketConn: c},
+		packetHandler: packetHandler{c: c.(*net.IPConn)},
+	}
+	s, err := netreflect.PacketSocketOf(c)
+	if err != nil {
+		return nil, err
+	}
+	if err := setInt(s, &sockOpts[ssoHeaderPrepend], boolint(true)); err != nil {
+		return nil, err
+	}
+	return r, nil
+}

vendor/golang.org/x/net/ipv4/gen.go

@@ -0,0 +1,199 @@
+// Copyright 2013 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.
+
+// +build ignore
+
+//go:generate go run gen.go
+
+// This program generates system adaptation constants and types,
+// internet protocol constants and tables by reading template files
+// and IANA protocol registries.
+package main
+
+import (
+	"bytes"
+	"encoding/xml"
+	"fmt"
+	"go/format"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	if err := genzsys(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	if err := geniana(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func genzsys() error {
+	defs := "defs_" + runtime.GOOS + ".go"
+	f, err := os.Open(defs)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	f.Close()
+	cmd := exec.Command("go", "tool", "cgo", "-godefs", defs)
+	b, err := cmd.Output()
+	if err != nil {
+		return err
+	}
+	b, err = format.Source(b)
+	if err != nil {
+		return err
+	}
+	zsys := "zsys_" + runtime.GOOS + ".go"
+	switch runtime.GOOS {
+	case "freebsd", "linux":
+		zsys = "zsys_" + runtime.GOOS + "_" + runtime.GOARCH + ".go"
+	}
+	if err := ioutil.WriteFile(zsys, b, 0644); err != nil {
+		return err
+	}
+	return nil
+}
+
+var registries = []struct {
+	url   string
+	parse func(io.Writer, io.Reader) error
+}{
+	{
+		"http://www.iana.org/assignments/icmp-parameters/icmp-parameters.xml",
+		parseICMPv4Parameters,
+	},
+}
+
+func geniana() error {
+	var bb bytes.Buffer
+	fmt.Fprintf(&bb, "// go generate gen.go\n")
+	fmt.Fprintf(&bb, "// GENERATED BY THE COMMAND ABOVE; DO NOT EDIT\n\n")
+	fmt.Fprintf(&bb, "package ipv4\n\n")
+	for _, r := range registries {
+		resp, err := http.Get(r.url)
+		if err != nil {
+			return err
+		}
+		defer resp.Body.Close()
+		if resp.StatusCode != http.StatusOK {
+			return fmt.Errorf("got HTTP status code %v for %v\n", resp.StatusCode, r.url)
+		}
+		if err := r.parse(&bb, resp.Body); err != nil {
+			return err
+		}
+		fmt.Fprintf(&bb, "\n")
+	}
+	b, err := format.Source(bb.Bytes())
+	if err != nil {
+		return err
+	}
+	if err := ioutil.WriteFile("iana.go", b, 0644); err != nil {
+		return err
+	}
+	return nil
+}
+
+func parseICMPv4Parameters(w io.Writer, r io.Reader) error {
+	dec := xml.NewDecoder(r)
+	var icp icmpv4Parameters
+	if err := dec.Decode(&icp); err != nil {
+		return err
+	}
+	prs := icp.escape()
+	fmt.Fprintf(w, "// %s, Updated: %s\n", icp.Title, icp.Updated)
+	fmt.Fprintf(w, "const (\n")
+	for _, pr := range prs {
+		if pr.Descr == "" {
+			continue
+		}
+		fmt.Fprintf(w, "ICMPType%s ICMPType = %d", pr.Descr, pr.Value)
+		fmt.Fprintf(w, "// %s\n", pr.OrigDescr)
+	}
+	fmt.Fprintf(w, ")\n\n")
+	fmt.Fprintf(w, "// %s, Updated: %s\n", icp.Title, icp.Updated)
+	fmt.Fprintf(w, "var icmpTypes = map[ICMPType]string{\n")
+	for _, pr := range prs {
+		if pr.Descr == "" {
+			continue
+		}
+		fmt.Fprintf(w, "%d: %q,\n", pr.Value, strings.ToLower(pr.OrigDescr))
+	}
+	fmt.Fprintf(w, "}\n")
+	return nil
+}
+
+type icmpv4Parameters struct {
+	XMLName    xml.Name `xml:"registry"`
+	Title      string   `xml:"title"`
+	Updated    string   `xml:"updated"`
+	Registries []struct {
+		Title   string `xml:"title"`
+		Records []struct {
+			Value string `xml:"value"`
+			Descr string `xml:"description"`
+		} `xml:"record"`
+	} `xml:"registry"`
+}
+
+type canonICMPv4ParamRecord struct {
+	OrigDescr string
+	Descr     string
+	Value     int
+}
+
+func (icp *icmpv4Parameters) escape() []canonICMPv4ParamRecord {
+	id := -1
+	for i, r := range icp.Registries {
+		if strings.Contains(r.Title, "Type") || strings.Contains(r.Title, "type") {
+			id = i
+			break
+		}
+	}
+	if id < 0 {
+		return nil
+	}
+	prs := make([]canonICMPv4ParamRecord, len(icp.Registries[id].Records))
+	sr := strings.NewReplacer(
+		"Messages", "",
+		"Message", "",
+		"ICMP", "",
+		"+", "P",
+		"-", "",
+		"/", "",
+		".", "",
+		" ", "",
+	)
+	for i, pr := range icp.Registries[id].Records {
+		if strings.Contains(pr.Descr, "Reserved") ||
+			strings.Contains(pr.Descr, "Unassigned") ||
+			strings.Contains(pr.Descr, "Deprecated") ||
+			strings.Contains(pr.Descr, "Experiment") ||
+			strings.Contains(pr.Descr, "experiment") {
+			continue
+		}
+		ss := strings.Split(pr.Descr, "\n")
+		if len(ss) > 1 {
+			prs[i].Descr = strings.Join(ss, " ")
+		} else {
+			prs[i].Descr = ss[0]
+		}
+		s := strings.TrimSpace(prs[i].Descr)
+		prs[i].OrigDescr = s
+		prs[i].Descr = sr.Replace(s)
+		prs[i].Value, _ = strconv.Atoi(pr.Value)
+	}
+	return prs
+}

vendor/golang.org/x/net/ipv4/genericopt_posix.go

@@ -0,0 +1,63 @@
+// Copyright 2012 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.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris windows
+
+package ipv4
+
+import (
+	"syscall"
+
+	"golang.org/x/net/internal/netreflect"
+)
+
+// TOS returns the type-of-service field value for outgoing packets.
+func (c *genericOpt) TOS() (int, error) {
+	if !c.ok() {
+		return 0, syscall.EINVAL
+	}
+	s, err := netreflect.SocketOf(c.Conn)
+	if err != nil {
+		return 0, err
+	}
+	return getInt(s, &sockOpts[ssoTOS])
+}
+
+// SetTOS sets the type-of-service field value for future outgoing
+// packets.
+func (c *genericOpt) SetTOS(tos int) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.SocketOf(c.Conn)
+	if err != nil {
+		return err
+	}
+	return setInt(s, &sockOpts[ssoTOS], tos)
+}
+
+// TTL returns the time-to-live field value for outgoing packets.
+func (c *genericOpt) TTL() (int, error) {
+	if !c.ok() {
+		return 0, syscall.EINVAL
+	}
+	s, err := netreflect.SocketOf(c.Conn)
+	if err != nil {
+		return 0, err
+	}
+	return getInt(s, &sockOpts[ssoTTL])
+}
+
+// SetTTL sets the time-to-live field value for future outgoing
+// packets.
+func (c *genericOpt) SetTTL(ttl int) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.SocketOf(c.Conn)
+	if err != nil {
+		return err
+	}
+	return setInt(s, &sockOpts[ssoTTL], ttl)
+}

vendor/golang.org/x/net/ipv4/genericopt_stub.go

@@ -0,0 +1,29 @@
+// Copyright 2012 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.
+
+// +build nacl plan9
+
+package ipv4
+
+// TOS returns the type-of-service field value for outgoing packets.
+func (c *genericOpt) TOS() (int, error) {
+	return 0, errOpNoSupport
+}
+
+// SetTOS sets the type-of-service field value for future outgoing
+// packets.
+func (c *genericOpt) SetTOS(tos int) error {
+	return errOpNoSupport
+}
+
+// TTL returns the time-to-live field value for outgoing packets.
+func (c *genericOpt) TTL() (int, error) {
+	return 0, errOpNoSupport
+}
+
+// SetTTL sets the time-to-live field value for future outgoing
+// packets.
+func (c *genericOpt) SetTTL(ttl int) error {
+	return errOpNoSupport
+}

vendor/golang.org/x/net/ipv4/header.go

@@ -0,0 +1,145 @@
+// Copyright 2012 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 (
+	"encoding/binary"
+	"fmt"
+	"net"
+	"runtime"
+	"syscall"
+)
+
+const (
+	Version      = 4  // protocol version
+	HeaderLen    = 20 // header length without extension headers
+	maxHeaderLen = 60 // sensible default, revisit if later RFCs define new usage of version and header length fields
+)
+
+type HeaderFlags int
+
+const (
+	MoreFragments HeaderFlags = 1 << iota // more fragments flag
+	DontFragment                          // don't fragment flag
+)
+
+// A Header represents an IPv4 header.
+type Header struct {
+	Version  int         // protocol version
+	Len      int         // header length
+	TOS      int         // type-of-service
+	TotalLen int         // packet total length
+	ID       int         // identification
+	Flags    HeaderFlags // flags
+	FragOff  int         // fragment offset
+	TTL      int         // time-to-live
+	Protocol int         // next protocol
+	Checksum int         // checksum
+	Src      net.IP      // source address
+	Dst      net.IP      // destination address
+	Options  []byte      // options, extension headers
+}
+
+func (h *Header) String() string {
+	if h == nil {
+		return "<nil>"
+	}
+	return fmt.Sprintf("ver=%d hdrlen=%d tos=%#x totallen=%d id=%#x flags=%#x fragoff=%#x ttl=%d proto=%d cksum=%#x src=%v dst=%v", h.Version, h.Len, h.TOS, h.TotalLen, h.ID, h.Flags, h.FragOff, h.TTL, h.Protocol, h.Checksum, h.Src, h.Dst)
+}
+
+// Marshal returns the binary encoding of the IPv4 header h.
+func (h *Header) Marshal() ([]byte, error) {
+	if h == nil {
+		return nil, syscall.EINVAL
+	}
+	if h.Len < HeaderLen {
+		return nil, errHeaderTooShort
+	}
+	hdrlen := HeaderLen + len(h.Options)
+	b := make([]byte, hdrlen)
+	b[0] = byte(Version<<4 | (hdrlen >> 2 & 0x0f))
+	b[1] = byte(h.TOS)
+	flagsAndFragOff := (h.FragOff & 0x1fff) | int(h.Flags<<13)
+	switch runtime.GOOS {
+	case "darwin", "dragonfly", "netbsd":
+		nativeEndian.PutUint16(b[2:4], uint16(h.TotalLen))
+		nativeEndian.PutUint16(b[6:8], uint16(flagsAndFragOff))
+	case "freebsd":
+		if freebsdVersion < 1100000 {
+			nativeEndian.PutUint16(b[2:4], uint16(h.TotalLen))
+			nativeEndian.PutUint16(b[6:8], uint16(flagsAndFragOff))
+		} else {
+			binary.BigEndian.PutUint16(b[2:4], uint16(h.TotalLen))
+			binary.BigEndian.PutUint16(b[6:8], uint16(flagsAndFragOff))
+		}
+	default:
+		binary.BigEndian.PutUint16(b[2:4], uint16(h.TotalLen))
+		binary.BigEndian.PutUint16(b[6:8], uint16(flagsAndFragOff))
+	}
+	binary.BigEndian.PutUint16(b[4:6], uint16(h.ID))
+	b[8] = byte(h.TTL)
+	b[9] = byte(h.Protocol)
+	binary.BigEndian.PutUint16(b[10:12], uint16(h.Checksum))
+	if ip := h.Src.To4(); ip != nil {
+		copy(b[12:16], ip[:net.IPv4len])
+	}
+	if ip := h.Dst.To4(); ip != nil {
+		copy(b[16:20], ip[:net.IPv4len])
+	} else {
+		return nil, errMissingAddress
+	}
+	if len(h.Options) > 0 {
+		copy(b[HeaderLen:], h.Options)
+	}
+	return b, nil
+}
+
+// ParseHeader parses b as an IPv4 header.
+func ParseHeader(b []byte) (*Header, error) {
+	if len(b) < HeaderLen {
+		return nil, errHeaderTooShort
+	}
+	hdrlen := int(b[0]&0x0f) << 2
+	if hdrlen > len(b) {
+		return nil, errBufferTooShort
+	}
+	h := &Header{
+		Version:  int(b[0] >> 4),
+		Len:      hdrlen,
+		TOS:      int(b[1]),
+		ID:       int(binary.BigEndian.Uint16(b[4:6])),
+		TTL:      int(b[8]),
+		Protocol: int(b[9]),
+		Checksum: int(binary.BigEndian.Uint16(b[10:12])),
+		Src:      net.IPv4(b[12], b[13], b[14], b[15]),
+		Dst:      net.IPv4(b[16], b[17], b[18], b[19]),
+	}
+	switch runtime.GOOS {
+	case "darwin", "dragonfly", "netbsd":
+		h.TotalLen = int(nativeEndian.Uint16(b[2:4])) + hdrlen
+		h.FragOff = int(nativeEndian.Uint16(b[6:8]))
+	case "freebsd":
+		if freebsdVersion < 1100000 {
+			h.TotalLen = int(nativeEndian.Uint16(b[2:4]))
+			if freebsdVersion < 1000000 {
+				h.TotalLen += hdrlen
+			}
+			h.FragOff = int(nativeEndian.Uint16(b[6:8]))
+		} else {
+			h.TotalLen = int(binary.BigEndian.Uint16(b[2:4]))
+			h.FragOff = int(binary.BigEndian.Uint16(b[6:8]))
+		}
+	default:
+		h.TotalLen = int(binary.BigEndian.Uint16(b[2:4]))
+		h.FragOff = int(binary.BigEndian.Uint16(b[6:8]))
+	}
+	h.Flags = HeaderFlags(h.FragOff&0xe000) >> 13
+	h.FragOff = h.FragOff & 0x1fff
+	if hdrlen-HeaderLen > 0 {
+		h.Options = make([]byte, hdrlen-HeaderLen)
+		copy(h.Options, b[HeaderLen:])
+	}
+	return h, nil
+}

vendor/golang.org/x/net/ipv4/helper.go

@@ -0,0 +1,59 @@
+// Copyright 2012 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 (
+	"encoding/binary"
+	"errors"
+	"net"
+	"unsafe"
+)
+
+var (
+	errMissingAddress           = errors.New("missing address")
+	errMissingHeader            = errors.New("missing header")
+	errHeaderTooShort           = errors.New("header too short")
+	errBufferTooShort           = errors.New("buffer too short")
+	errInvalidConnType          = errors.New("invalid conn type")
+	errOpNoSupport              = errors.New("operation not supported")
+	errNoSuchInterface          = errors.New("no such interface")
+	errNoSuchMulticastInterface = errors.New("no such multicast interface")
+
+	// See http://www.freebsd.org/doc/en/books/porters-handbook/freebsd-versions.html.
+	freebsdVersion uint32
+
+	nativeEndian binary.ByteOrder
+)
+
+func init() {
+	i := uint32(1)
+	b := (*[4]byte)(unsafe.Pointer(&i))
+	if b[0] == 1 {
+		nativeEndian = binary.LittleEndian
+	} else {
+		nativeEndian = binary.BigEndian
+	}
+}
+
+func boolint(b bool) int {
+	if b {
+		return 1
+	}
+	return 0
+}
+
+func netAddrToIP4(a net.Addr) net.IP {
+	switch v := a.(type) {
+	case *net.UDPAddr:
+		if ip := v.IP.To4(); ip != nil {
+			return ip
+		}
+	case *net.IPAddr:
+		if ip := v.IP.To4(); ip != nil {
+			return ip
+		}
+	}
+	return nil
+}

vendor/golang.org/x/net/ipv4/iana.go

@@ -0,0 +1,34 @@
+// go generate gen.go
+// GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
+
+package ipv4
+
+// Internet Control Message Protocol (ICMP) Parameters, Updated: 2013-04-19
+const (
+	ICMPTypeEchoReply              ICMPType = 0  // Echo Reply
+	ICMPTypeDestinationUnreachable ICMPType = 3  // Destination Unreachable
+	ICMPTypeRedirect               ICMPType = 5  // Redirect
+	ICMPTypeEcho                   ICMPType = 8  // Echo
+	ICMPTypeRouterAdvertisement    ICMPType = 9  // Router Advertisement
+	ICMPTypeRouterSolicitation     ICMPType = 10 // Router Solicitation
+	ICMPTypeTimeExceeded           ICMPType = 11 // Time Exceeded
+	ICMPTypeParameterProblem       ICMPType = 12 // Parameter Problem
+	ICMPTypeTimestamp              ICMPType = 13 // Timestamp
+	ICMPTypeTimestampReply         ICMPType = 14 // Timestamp Reply
+	ICMPTypePhoturis               ICMPType = 40 // Photuris
+)
+
+// Internet Control Message Protocol (ICMP) Parameters, Updated: 2013-04-19
+var icmpTypes = map[ICMPType]string{
+	0:  "echo reply",
+	3:  "destination unreachable",
+	5:  "redirect",
+	8:  "echo",
+	9:  "router advertisement",
+	10: "router solicitation",
+	11: "time exceeded",
+	12: "parameter problem",
+	13: "timestamp",
+	14: "timestamp reply",
+	40: "photuris",
+}

vendor/golang.org/x/net/ipv4/icmp.go

@@ -0,0 +1,57 @@
+// Copyright 2013 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 "golang.org/x/net/internal/iana"
+
+// An ICMPType represents a type of ICMP message.
+type ICMPType int
+
+func (typ ICMPType) String() string {
+	s, ok := icmpTypes[typ]
+	if !ok {
+		return "<nil>"
+	}
+	return s
+}
+
+// Protocol returns the ICMPv4 protocol number.
+func (typ ICMPType) Protocol() int {
+	return iana.ProtocolICMP
+}
+
+// An ICMPFilter represents an ICMP message filter for incoming
+// packets. The filter belongs to a packet delivery path on a host and
+// it cannot interact with forwarding packets or tunnel-outer packets.
+//
+// Note: RFC 2460 defines a reasonable role model and it works not
+// only for IPv6 but IPv4. A node means a device that implements IP.
+// A router means a node that forwards IP packets not explicitly
+// addressed to itself, and a host means a node that is not a router.
+type ICMPFilter struct {
+	icmpFilter
+}
+
+// Accept accepts incoming ICMP packets including the type field value
+// typ.
+func (f *ICMPFilter) Accept(typ ICMPType) {
+	f.accept(typ)
+}
+
+// Block blocks incoming ICMP packets including the type field value
+// typ.
+func (f *ICMPFilter) Block(typ ICMPType) {
+	f.block(typ)
+}
+
+// SetAll sets the filter action to the filter.
+func (f *ICMPFilter) SetAll(block bool) {
+	f.setAll(block)
+}
+
+// WillBlock reports whether the ICMP type will be blocked.
+func (f *ICMPFilter) WillBlock(typ ICMPType) bool {
+	return f.willBlock(typ)
+}

vendor/golang.org/x/net/ipv4/icmp_linux.go

@@ -0,0 +1,25 @@
+// Copyright 2014 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
+
+func (f *icmpFilter) accept(typ ICMPType) {
+	f.Data &^= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpFilter) block(typ ICMPType) {
+	f.Data |= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpFilter) setAll(block bool) {
+	if block {
+		f.Data = 1<<32 - 1
+	} else {
+		f.Data = 0
+	}
+}
+
+func (f *icmpFilter) willBlock(typ ICMPType) bool {
+	return f.Data&(1<<(uint32(typ)&31)) != 0
+}

vendor/golang.org/x/net/ipv4/icmp_stub.go

@@ -0,0 +1,25 @@
+// Copyright 2014 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.
+
+// +build !linux
+
+package ipv4
+
+const sizeofICMPFilter = 0x0
+
+type icmpFilter struct {
+}
+
+func (f *icmpFilter) accept(typ ICMPType) {
+}
+
+func (f *icmpFilter) block(typ ICMPType) {
+}
+
+func (f *icmpFilter) setAll(block bool) {
+}
+
+func (f *icmpFilter) willBlock(typ ICMPType) bool {
+	return false
+}

vendor/golang.org/x/net/ipv4/packet.go

@@ -0,0 +1,100 @@
+// Copyright 2012 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"
+)
+
+// BUG(mikio): On Windows, the ReadFrom and WriteTo methods of RawConn
+// are not implemented.
+
+// A packetHandler represents the IPv4 datagram handler.
+type packetHandler struct {
+	c *net.IPConn
+	rawOpt
+}
+
+func (c *packetHandler) ok() bool { return c != nil && c.c != nil }
+
+// ReadFrom reads an IPv4 datagram from the endpoint c, copying the
+// datagram into b.  It returns the received datagram as the IPv4
+// header h, the payload p and the control message cm.
+func (c *packetHandler) ReadFrom(b []byte) (h *Header, p []byte, cm *ControlMessage, err error) {
+	if !c.ok() {
+		return nil, nil, nil, syscall.EINVAL
+	}
+	oob := newControlMessage(&c.rawOpt)
+	n, oobn, _, src, err := c.c.ReadMsgIP(b, oob)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	var hs []byte
+	if hs, p, err = slicePacket(b[:n]); err != nil {
+		return nil, nil, nil, err
+	}
+	if h, err = ParseHeader(hs); err != nil {
+		return nil, nil, nil, err
+	}
+	if cm, err = parseControlMessage(oob[:oobn]); err != nil {
+		return nil, nil, nil, err
+	}
+	if src != nil && cm != nil {
+		cm.Src = src.IP
+	}
+	return
+}
+
+func slicePacket(b []byte) (h, p []byte, err error) {
+	if len(b) < HeaderLen {
+		return nil, nil, errHeaderTooShort
+	}
+	hdrlen := int(b[0]&0x0f) << 2
+	return b[:hdrlen], b[hdrlen:], nil
+}
+
+// WriteTo writes an IPv4 datagram through the endpoint c, copying the
+// datagram from the IPv4 header h and the payload p.  The control
+// message cm allows the datagram path and the outgoing interface to be
+// specified.  Currently only Darwin and Linux support this.  The cm
+// may be nil if control of the outgoing datagram is not required.
+//
+// The IPv4 header h must contain appropriate fields that include:
+//
+//	Version       = ipv4.Version
+//	Len           = <must be specified>
+//	TOS           = <must be specified>
+//	TotalLen      = <must be specified>
+//	ID            = platform sets an appropriate value if ID is zero
+//	FragOff       = <must be specified>
+//	TTL           = <must be specified>
+//	Protocol      = <must be specified>
+//	Checksum      = platform sets an appropriate value if Checksum is zero
+//	Src           = platform sets an appropriate value if Src is nil
+//	Dst           = <must be specified>
+//	Options       = optional
+func (c *packetHandler) WriteTo(h *Header, p []byte, cm *ControlMessage) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	oob := marshalControlMessage(cm)
+	wh, err := h.Marshal()
+	if err != nil {
+		return err
+	}
+	dst := &net.IPAddr{}
+	if cm != nil {
+		if ip := cm.Dst.To4(); ip != nil {
+			dst.IP = ip
+		}
+	}
+	if dst.IP == nil {
+		dst.IP = h.Dst
+	}
+	wh = append(wh, p...)
+	_, _, err = c.c.WriteMsgIP(wh, oob, dst)
+	return err
+}

vendor/golang.org/x/net/ipv4/payload.go

@@ -0,0 +1,18 @@
+// Copyright 2012 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"
+
+// BUG(mikio): On Windows, the ControlMessage for ReadFrom and WriteTo
+// methods of PacketConn is not implemented.
+
+// A payloadHandler represents the IPv4 datagram payload handler.
+type payloadHandler struct {
+	net.PacketConn
+	rawOpt
+}
+
+func (c *payloadHandler) ok() bool { return c != nil && c.PacketConn != nil }

vendor/golang.org/x/net/ipv4/payload_cmsg.go

@@ -0,0 +1,81 @@
+// Copyright 2012 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.
+
+// +build !plan9,!windows
+
+package ipv4
+
+import (
+	"net"
+	"syscall"
+)
+
+// ReadFrom reads a payload of the received IPv4 datagram, from the
+// endpoint c, copying the payload into b.  It returns the number of
+// bytes copied into b, the control message cm and the source address
+// src of the received datagram.
+func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
+	if !c.ok() {
+		return 0, nil, nil, syscall.EINVAL
+	}
+	oob := newControlMessage(&c.rawOpt)
+	var oobn int
+	switch c := c.PacketConn.(type) {
+	case *net.UDPConn:
+		if n, oobn, _, src, err = c.ReadMsgUDP(b, oob); err != nil {
+			return 0, nil, nil, err
+		}
+	case *net.IPConn:
+		if sockOpts[ssoStripHeader].name > 0 {
+			if n, oobn, _, src, err = c.ReadMsgIP(b, oob); err != nil {
+				return 0, nil, nil, err
+			}
+		} else {
+			nb := make([]byte, maxHeaderLen+len(b))
+			if n, oobn, _, src, err = c.ReadMsgIP(nb, oob); err != nil {
+				return 0, nil, nil, err
+			}
+			hdrlen := int(nb[0]&0x0f) << 2
+			copy(b, nb[hdrlen:])
+			n -= hdrlen
+		}
+	default:
+		return 0, nil, nil, errInvalidConnType
+	}
+	if cm, err = parseControlMessage(oob[:oobn]); err != nil {
+		return 0, nil, nil, err
+	}
+	if cm != nil {
+		cm.Src = netAddrToIP4(src)
+	}
+	return
+}
+
+// WriteTo writes a payload of the IPv4 datagram, to the destination
+// address dst through the endpoint c, copying the payload from b.  It
+// returns the number of bytes written.  The control message cm allows
+// the datagram path and the outgoing interface to be specified.
+// Currently only Darwin and Linux support this.  The cm may be nil if
+// control of the outgoing datagram is not required.
+func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
+	if !c.ok() {
+		return 0, syscall.EINVAL
+	}
+	oob := marshalControlMessage(cm)
+	if dst == nil {
+		return 0, errMissingAddress
+	}
+	switch c := c.PacketConn.(type) {
+	case *net.UDPConn:
+		n, _, err = c.WriteMsgUDP(b, oob, dst.(*net.UDPAddr))
+	case *net.IPConn:
+		n, _, err = c.WriteMsgIP(b, oob, dst.(*net.IPAddr))
+	default:
+		return 0, errInvalidConnType
+	}
+	if err != nil {
+		return 0, err
+	}
+	return
+}

vendor/golang.org/x/net/ipv4/payload_nocmsg.go

@@ -0,0 +1,42 @@
+// Copyright 2012 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.
+
+// +build plan9 windows
+
+package ipv4
+
+import (
+	"net"
+	"syscall"
+)
+
+// ReadFrom reads a payload of the received IPv4 datagram, from the
+// endpoint c, copying the payload into b.  It returns the number of
+// bytes copied into b, the control message cm and the source address
+// src of the received datagram.
+func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
+	if !c.ok() {
+		return 0, nil, nil, syscall.EINVAL
+	}
+	if n, src, err = c.PacketConn.ReadFrom(b); err != nil {
+		return 0, nil, nil, err
+	}
+	return
+}
+
+// WriteTo writes a payload of the IPv4 datagram, to the destination
+// address dst through the endpoint c, copying the payload from b.  It
+// returns the number of bytes written.  The control message cm allows
+// the datagram path and the outgoing interface to be specified.
+// Currently only Darwin and Linux support this.  The cm may be nil if
+// control of the outgoing datagram is not required.
+func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
+	if !c.ok() {
+		return 0, syscall.EINVAL
+	}
+	if dst == nil {
+		return 0, errMissingAddress
+	}
+	return c.PacketConn.WriteTo(b, dst)
+}

vendor/golang.org/x/net/ipv4/sockopt.go

@@ -0,0 +1,46 @@
+// Copyright 2014 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
+
+// Sticky socket options
+const (
+	ssoTOS                = iota // header field for unicast packet
+	ssoTTL                       // header field for unicast packet
+	ssoMulticastTTL              // header field for multicast packet
+	ssoMulticastInterface        // outbound interface for multicast packet
+	ssoMulticastLoopback         // loopback for multicast packet
+	ssoReceiveTTL                // header field on received packet
+	ssoReceiveDst                // header field on received packet
+	ssoReceiveInterface          // inbound interface on received packet
+	ssoPacketInfo                // incbound or outbound packet path
+	ssoHeaderPrepend             // ipv4 header prepend
+	ssoStripHeader               // strip ipv4 header
+	ssoICMPFilter                // icmp filter
+	ssoJoinGroup                 // any-source multicast
+	ssoLeaveGroup                // any-source multicast
+	ssoJoinSourceGroup           // source-specific multicast
+	ssoLeaveSourceGroup          // source-specific multicast
+	ssoBlockSourceGroup          // any-source or source-specific multicast
+	ssoUnblockSourceGroup        // any-source or source-specific multicast
+	ssoMax
+)
+
+// Sticky socket option value types
+const (
+	ssoTypeByte = iota + 1
+	ssoTypeInt
+	ssoTypeInterface
+	ssoTypeICMPFilter
+	ssoTypeIPMreq
+	ssoTypeIPMreqn
+	ssoTypeGroupReq
+	ssoTypeGroupSourceReq
+)
+
+// A sockOpt represents a binding for sticky socket option.
+type sockOpt struct {
+	name int // option name, must be equal or greater than 1
+	typ  int // option value type, must be equal or greater than 1
+}

vendor/golang.org/x/net/ipv4/sockopt_asmreq.go

@@ -0,0 +1,83 @@
+// Copyright 2012 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.
+
+// +build darwin dragonfly freebsd netbsd openbsd solaris windows
+
+package ipv4
+
+import "net"
+
+func setIPMreqInterface(mreq *ipMreq, ifi *net.Interface) error {
+	if ifi == nil {
+		return nil
+	}
+	ifat, err := ifi.Addrs()
+	if err != nil {
+		return err
+	}
+	for _, ifa := range ifat {
+		switch ifa := ifa.(type) {
+		case *net.IPAddr:
+			if ip := ifa.IP.To4(); ip != nil {
+				copy(mreq.Interface[:], ip)
+				return nil
+			}
+		case *net.IPNet:
+			if ip := ifa.IP.To4(); ip != nil {
+				copy(mreq.Interface[:], ip)
+				return nil
+			}
+		}
+	}
+	return errNoSuchInterface
+}
+
+func netIP4ToInterface(ip net.IP) (*net.Interface, error) {
+	ift, err := net.Interfaces()
+	if err != nil {
+		return nil, err
+	}
+	for _, ifi := range ift {
+		ifat, err := ifi.Addrs()
+		if err != nil {
+			return nil, err
+		}
+		for _, ifa := range ifat {
+			switch ifa := ifa.(type) {
+			case *net.IPAddr:
+				if ip.Equal(ifa.IP) {
+					return &ifi, nil
+				}
+			case *net.IPNet:
+				if ip.Equal(ifa.IP) {
+					return &ifi, nil
+				}
+			}
+		}
+	}
+	return nil, errNoSuchInterface
+}
+
+func netInterfaceToIP4(ifi *net.Interface) (net.IP, error) {
+	if ifi == nil {
+		return net.IPv4zero.To4(), nil
+	}
+	ifat, err := ifi.Addrs()
+	if err != nil {
+		return nil, err
+	}
+	for _, ifa := range ifat {
+		switch ifa := ifa.(type) {
+		case *net.IPAddr:
+			if ip := ifa.IP.To4(); ip != nil {
+				return ip, nil
+			}
+		case *net.IPNet:
+			if ip := ifa.IP.To4(); ip != nil {
+				return ip, nil
+			}
+		}
+	}
+	return nil, errNoSuchInterface
+}

vendor/golang.org/x/net/ipv4/sockopt_asmreq_posix.go

@@ -0,0 +1,46 @@
+// Copyright 2012 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.
+
+// +build darwin dragonfly freebsd netbsd openbsd solaris windows
+
+package ipv4
+
+import (
+	"net"
+	"os"
+	"unsafe"
+
+	"golang.org/x/net/internal/iana"
+)
+
+func setsockoptIPMreq(s uintptr, name int, ifi *net.Interface, grp net.IP) error {
+	mreq := ipMreq{Multiaddr: [4]byte{grp[0], grp[1], grp[2], grp[3]}}
+	if err := setIPMreqInterface(&mreq, ifi); err != nil {
+		return err
+	}
+	return os.NewSyscallError("setsockopt", setsockopt(s, iana.ProtocolIP, name, unsafe.Pointer(&mreq), sizeofIPMreq))
+}
+
+func getsockoptInterface(s uintptr, name int) (*net.Interface, error) {
+	var b [4]byte
+	l := uint32(4)
+	if err := getsockopt(s, iana.ProtocolIP, name, unsafe.Pointer(&b[0]), &l); err != nil {
+		return nil, os.NewSyscallError("getsockopt", err)
+	}
+	ifi, err := netIP4ToInterface(net.IPv4(b[0], b[1], b[2], b[3]))
+	if err != nil {
+		return nil, err
+	}
+	return ifi, nil
+}
+
+func setsockoptInterface(s uintptr, name int, ifi *net.Interface) error {
+	ip, err := netInterfaceToIP4(ifi)
+	if err != nil {
+		return err
+	}
+	var b [4]byte
+	copy(b[:], ip)
+	return os.NewSyscallError("setsockopt", setsockopt(s, iana.ProtocolIP, name, unsafe.Pointer(&b[0]), uint32(4)))
+}

vendor/golang.org/x/net/ipv4/sockopt_asmreq_stub.go

@@ -0,0 +1,21 @@
+// Copyright 2012 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.
+
+// +build !darwin,!dragonfly,!freebsd,!netbsd,!openbsd,!solaris,!windows
+
+package ipv4
+
+import "net"
+
+func setsockoptIPMreq(s uintptr, name int, ifi *net.Interface, grp net.IP) error {
+	return errOpNoSupport
+}
+
+func getsockoptInterface(s uintptr, name int) (*net.Interface, error) {
+	return nil, errOpNoSupport
+}
+
+func setsockoptInterface(s uintptr, name int, ifi *net.Interface) error {
+	return errOpNoSupport
+}

vendor/golang.org/x/net/ipv4/sockopt_asmreqn_stub.go

@@ -0,0 +1,17 @@
+// Copyright 2014 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.
+
+// +build !darwin,!freebsd,!linux
+
+package ipv4
+
+import "net"
+
+func getsockoptIPMreqn(s uintptr, name int) (*net.Interface, error) {
+	return nil, errOpNoSupport
+}
+
+func setsockoptIPMreqn(s uintptr, name int, ifi *net.Interface, grp net.IP) error {
+	return errOpNoSupport
+}

vendor/golang.org/x/net/ipv4/sockopt_asmreqn_unix.go

@@ -0,0 +1,42 @@
+// Copyright 2014 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.
+
+// +build darwin freebsd linux
+
+package ipv4
+
+import (
+	"net"
+	"os"
+	"unsafe"
+
+	"golang.org/x/net/internal/iana"
+)
+
+func getsockoptIPMreqn(s uintptr, name int) (*net.Interface, error) {
+	var mreqn ipMreqn
+	l := uint32(sizeofIPMreqn)
+	if err := getsockopt(s, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), &l); err != nil {
+		return nil, os.NewSyscallError("getsockopt", err)
+	}
+	if mreqn.Ifindex == 0 {
+		return nil, nil
+	}
+	ifi, err := net.InterfaceByIndex(int(mreqn.Ifindex))
+	if err != nil {
+		return nil, err
+	}
+	return ifi, nil
+}
+
+func setsockoptIPMreqn(s uintptr, name int, ifi *net.Interface, grp net.IP) error {
+	var mreqn ipMreqn
+	if ifi != nil {
+		mreqn.Ifindex = int32(ifi.Index)
+	}
+	if grp != nil {
+		mreqn.Multiaddr = [4]byte{grp[0], grp[1], grp[2], grp[3]}
+	}
+	return os.NewSyscallError("setsockopt", setsockopt(s, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), sizeofIPMreqn))
+}

vendor/golang.org/x/net/ipv4/sockopt_posix.go

@@ -0,0 +1,122 @@
+// Copyright 2012 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.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris windows
+
+package ipv4
+
+import (
+	"net"
+	"os"
+	"unsafe"
+
+	"golang.org/x/net/internal/iana"
+)
+
+func getInt(s uintptr, opt *sockOpt) (int, error) {
+	if opt.name < 1 || (opt.typ != ssoTypeByte && opt.typ != ssoTypeInt) {
+		return 0, errOpNoSupport
+	}
+	var i int32
+	var b byte
+	p := unsafe.Pointer(&i)
+	l := uint32(4)
+	if opt.typ == ssoTypeByte {
+		p = unsafe.Pointer(&b)
+		l = 1
+	}
+	if err := getsockopt(s, iana.ProtocolIP, opt.name, p, &l); err != nil {
+		return 0, os.NewSyscallError("getsockopt", err)
+	}
+	if opt.typ == ssoTypeByte {
+		return int(b), nil
+	}
+	return int(i), nil
+}
+
+func setInt(s uintptr, opt *sockOpt, v int) error {
+	if opt.name < 1 || (opt.typ != ssoTypeByte && opt.typ != ssoTypeInt) {
+		return errOpNoSupport
+	}
+	i := int32(v)
+	var b byte
+	p := unsafe.Pointer(&i)
+	l := uint32(4)
+	if opt.typ == ssoTypeByte {
+		b = byte(v)
+		p = unsafe.Pointer(&b)
+		l = 1
+	}
+	return os.NewSyscallError("setsockopt", setsockopt(s, iana.ProtocolIP, opt.name, p, l))
+}
+
+func getInterface(s uintptr, opt *sockOpt) (*net.Interface, error) {
+	if opt.name < 1 {
+		return nil, errOpNoSupport
+	}
+	switch opt.typ {
+	case ssoTypeInterface:
+		return getsockoptInterface(s, opt.name)
+	case ssoTypeIPMreqn:
+		return getsockoptIPMreqn(s, opt.name)
+	default:
+		return nil, errOpNoSupport
+	}
+}
+
+func setInterface(s uintptr, opt *sockOpt, ifi *net.Interface) error {
+	if opt.name < 1 {
+		return errOpNoSupport
+	}
+	switch opt.typ {
+	case ssoTypeInterface:
+		return setsockoptInterface(s, opt.name, ifi)
+	case ssoTypeIPMreqn:
+		return setsockoptIPMreqn(s, opt.name, ifi, nil)
+	default:
+		return errOpNoSupport
+	}
+}
+
+func getICMPFilter(s uintptr, opt *sockOpt) (*ICMPFilter, error) {
+	if opt.name < 1 || opt.typ != ssoTypeICMPFilter {
+		return nil, errOpNoSupport
+	}
+	var f ICMPFilter
+	l := uint32(sizeofICMPFilter)
+	if err := getsockopt(s, iana.ProtocolReserved, opt.name, unsafe.Pointer(&f.icmpFilter), &l); err != nil {
+		return nil, os.NewSyscallError("getsockopt", err)
+	}
+	return &f, nil
+}
+
+func setICMPFilter(s uintptr, opt *sockOpt, f *ICMPFilter) error {
+	if opt.name < 1 || opt.typ != ssoTypeICMPFilter {
+		return errOpNoSupport
+	}
+	return os.NewSyscallError("setsockopt", setsockopt(s, iana.ProtocolReserved, opt.name, unsafe.Pointer(&f.icmpFilter), sizeofICMPFilter))
+}
+
+func setGroup(s uintptr, opt *sockOpt, ifi *net.Interface, grp net.IP) error {
+	if opt.name < 1 {
+		return errOpNoSupport
+	}
+	switch opt.typ {
+	case ssoTypeIPMreq:
+		return setsockoptIPMreq(s, opt.name, ifi, grp)
+	case ssoTypeIPMreqn:
+		return setsockoptIPMreqn(s, opt.name, ifi, grp)
+	case ssoTypeGroupReq:
+		return setsockoptGroupReq(s, opt.name, ifi, grp)
+	default:
+		return errOpNoSupport
+	}
+}
+
+func setSourceGroup(s uintptr, opt *sockOpt, ifi *net.Interface, grp, src net.IP) error {
+	if opt.name < 1 || opt.typ != ssoTypeGroupSourceReq {
+		return errOpNoSupport
+	}
+	return setsockoptGroupSourceReq(s, opt.name, ifi, grp, src)
+}

vendor/golang.org/x/net/ipv4/sockopt_ssmreq_stub.go

@@ -0,0 +1,17 @@
+// Copyright 2014 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.
+
+// +build !darwin,!freebsd,!linux,!solaris
+
+package ipv4
+
+import "net"
+
+func setsockoptGroupReq(s uintptr, name int, ifi *net.Interface, grp net.IP) error {
+	return errOpNoSupport
+}
+
+func setsockoptGroupSourceReq(s uintptr, name int, ifi *net.Interface, grp, src net.IP) error {
+	return errOpNoSupport
+}

vendor/golang.org/x/net/ipv4/sockopt_ssmreq_unix.go

@@ -0,0 +1,61 @@
+// Copyright 2014 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.
+
+// +build darwin freebsd linux solaris
+
+package ipv4
+
+import (
+	"net"
+	"os"
+	"unsafe"
+
+	"golang.org/x/net/internal/iana"
+)
+
+var freebsd32o64 bool
+
+func setsockoptGroupReq(s uintptr, name int, ifi *net.Interface, grp net.IP) error {
+	var gr groupReq
+	if ifi != nil {
+		gr.Interface = uint32(ifi.Index)
+	}
+	gr.setGroup(grp)
+	var p unsafe.Pointer
+	var l uint32
+	if freebsd32o64 {
+		var d [sizeofGroupReq + 4]byte
+		s := (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr))
+		copy(d[:4], s[:4])
+		copy(d[8:], s[4:])
+		p = unsafe.Pointer(&d[0])
+		l = sizeofGroupReq + 4
+	} else {
+		p = unsafe.Pointer(&gr)
+		l = sizeofGroupReq
+	}
+	return os.NewSyscallError("setsockopt", setsockopt(s, iana.ProtocolIP, name, p, l))
+}
+
+func setsockoptGroupSourceReq(s uintptr, name int, ifi *net.Interface, grp, src net.IP) error {
+	var gsr groupSourceReq
+	if ifi != nil {
+		gsr.Interface = uint32(ifi.Index)
+	}
+	gsr.setSourceGroup(grp, src)
+	var p unsafe.Pointer
+	var l uint32
+	if freebsd32o64 {
+		var d [sizeofGroupSourceReq + 4]byte
+		s := (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))
+		copy(d[:4], s[:4])
+		copy(d[8:], s[4:])
+		p = unsafe.Pointer(&d[0])
+		l = sizeofGroupSourceReq + 4
+	} else {
+		p = unsafe.Pointer(&gsr)
+		l = sizeofGroupSourceReq
+	}
+	return os.NewSyscallError("setsockopt", setsockopt(s, iana.ProtocolIP, name, p, l))
+}

vendor/golang.org/x/net/ipv4/sockopt_stub.go

@@ -0,0 +1,11 @@
+// Copyright 2012 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.
+
+// +build nacl plan9
+
+package ipv4
+
+func setInt(s uintptr, opt *sockOpt, v int) error {
+	return errOpNoSupport
+}

vendor/golang.org/x/net/ipv4/sys_bsd.go

@@ -0,0 +1,34 @@
+// Copyright 2014 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.
+
+// +build dragonfly netbsd
+
+package ipv4
+
+import (
+	"net"
+	"syscall"
+)
+
+var (
+	ctlOpts = [ctlMax]ctlOpt{
+		ctlTTL:       {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+		ctlDst:       {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+		ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+	}
+
+	sockOpts = [ssoMax]sockOpt{
+		ssoTOS:                {sysIP_TOS, ssoTypeInt},
+		ssoTTL:                {sysIP_TTL, ssoTypeInt},
+		ssoMulticastTTL:       {sysIP_MULTICAST_TTL, ssoTypeByte},
+		ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
+		ssoMulticastLoopback:  {sysIP_MULTICAST_LOOP, ssoTypeInt},
+		ssoReceiveTTL:         {sysIP_RECVTTL, ssoTypeInt},
+		ssoReceiveDst:         {sysIP_RECVDSTADDR, ssoTypeInt},
+		ssoReceiveInterface:   {sysIP_RECVIF, ssoTypeInt},
+		ssoHeaderPrepend:      {sysIP_HDRINCL, ssoTypeInt},
+		ssoJoinGroup:          {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
+		ssoLeaveGroup:         {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
+	}
+)

vendor/golang.org/x/net/ipv4/sys_darwin.go

@@ -0,0 +1,96 @@
+// Copyright 2014 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"
+	"unsafe"
+)
+
+var (
+	ctlOpts = [ctlMax]ctlOpt{
+		ctlTTL:       {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+		ctlDst:       {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+		ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+	}
+
+	sockOpts = [ssoMax]sockOpt{
+		ssoTOS:                {sysIP_TOS, ssoTypeInt},
+		ssoTTL:                {sysIP_TTL, ssoTypeInt},
+		ssoMulticastTTL:       {sysIP_MULTICAST_TTL, ssoTypeByte},
+		ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
+		ssoMulticastLoopback:  {sysIP_MULTICAST_LOOP, ssoTypeInt},
+		ssoReceiveTTL:         {sysIP_RECVTTL, ssoTypeInt},
+		ssoReceiveDst:         {sysIP_RECVDSTADDR, ssoTypeInt},
+		ssoReceiveInterface:   {sysIP_RECVIF, ssoTypeInt},
+		ssoHeaderPrepend:      {sysIP_HDRINCL, ssoTypeInt},
+		ssoStripHeader:        {sysIP_STRIPHDR, ssoTypeInt},
+		ssoJoinGroup:          {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
+		ssoLeaveGroup:         {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
+	}
+)
+
+func init() {
+	// Seems like kern.osreldate is veiled on latest OS X. We use
+	// kern.osrelease instead.
+	osver, err := syscall.Sysctl("kern.osrelease")
+	if err != nil {
+		return
+	}
+	var i int
+	for i = range osver {
+		if osver[i] == '.' {
+			break
+		}
+	}
+	// The IP_PKTINFO and protocol-independent multicast API were
+	// introduced in OS X 10.7 (Darwin 11.0.0). But it looks like
+	// those features require OS X 10.8 (Darwin 12.0.0) and above.
+	// See http://support.apple.com/kb/HT1633.
+	if i > 2 || i == 2 && osver[0] >= '1' && osver[1] >= '2' {
+		ctlOpts[ctlPacketInfo].name = sysIP_PKTINFO
+		ctlOpts[ctlPacketInfo].length = sizeofInetPktinfo
+		ctlOpts[ctlPacketInfo].marshal = marshalPacketInfo
+		ctlOpts[ctlPacketInfo].parse = parsePacketInfo
+		sockOpts[ssoPacketInfo].name = sysIP_RECVPKTINFO
+		sockOpts[ssoPacketInfo].typ = ssoTypeInt
+		sockOpts[ssoMulticastInterface].typ = ssoTypeIPMreqn
+		sockOpts[ssoJoinGroup].name = sysMCAST_JOIN_GROUP
+		sockOpts[ssoJoinGroup].typ = ssoTypeGroupReq
+		sockOpts[ssoLeaveGroup].name = sysMCAST_LEAVE_GROUP
+		sockOpts[ssoLeaveGroup].typ = ssoTypeGroupReq
+		sockOpts[ssoJoinSourceGroup].name = sysMCAST_JOIN_SOURCE_GROUP
+		sockOpts[ssoJoinSourceGroup].typ = ssoTypeGroupSourceReq
+		sockOpts[ssoLeaveSourceGroup].name = sysMCAST_LEAVE_SOURCE_GROUP
+		sockOpts[ssoLeaveSourceGroup].typ = ssoTypeGroupSourceReq
+		sockOpts[ssoBlockSourceGroup].name = sysMCAST_BLOCK_SOURCE
+		sockOpts[ssoBlockSourceGroup].typ = ssoTypeGroupSourceReq
+		sockOpts[ssoUnblockSourceGroup].name = sysMCAST_UNBLOCK_SOURCE
+		sockOpts[ssoUnblockSourceGroup].typ = ssoTypeGroupSourceReq
+	}
+}
+
+func (pi *inetPktinfo) setIfindex(i int) {
+	pi.Ifindex = uint32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+	sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gr)) + 4))
+	sa.Len = sizeofSockaddrInet
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+	sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 4))
+	sa.Len = sizeofSockaddrInet
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], grp)
+	sa = (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 132))
+	sa.Len = sizeofSockaddrInet
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], src)
+}

vendor/golang.org/x/net/ipv4/sys_freebsd.go

@@ -0,0 +1,73 @@
+// Copyright 2014 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"
+	"runtime"
+	"strings"
+	"syscall"
+	"unsafe"
+)
+
+var (
+	ctlOpts = [ctlMax]ctlOpt{
+		ctlTTL:       {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+		ctlDst:       {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+		ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+	}
+
+	sockOpts = [ssoMax]sockOpt{
+		ssoTOS:                {sysIP_TOS, ssoTypeInt},
+		ssoTTL:                {sysIP_TTL, ssoTypeInt},
+		ssoMulticastTTL:       {sysIP_MULTICAST_TTL, ssoTypeByte},
+		ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
+		ssoMulticastLoopback:  {sysIP_MULTICAST_LOOP, ssoTypeInt},
+		ssoReceiveTTL:         {sysIP_RECVTTL, ssoTypeInt},
+		ssoReceiveDst:         {sysIP_RECVDSTADDR, ssoTypeInt},
+		ssoReceiveInterface:   {sysIP_RECVIF, ssoTypeInt},
+		ssoHeaderPrepend:      {sysIP_HDRINCL, ssoTypeInt},
+		ssoJoinGroup:          {sysMCAST_JOIN_GROUP, ssoTypeGroupReq},
+		ssoLeaveGroup:         {sysMCAST_LEAVE_GROUP, ssoTypeGroupReq},
+		ssoJoinSourceGroup:    {sysMCAST_JOIN_SOURCE_GROUP, ssoTypeGroupSourceReq},
+		ssoLeaveSourceGroup:   {sysMCAST_LEAVE_SOURCE_GROUP, ssoTypeGroupSourceReq},
+		ssoBlockSourceGroup:   {sysMCAST_BLOCK_SOURCE, ssoTypeGroupSourceReq},
+		ssoUnblockSourceGroup: {sysMCAST_UNBLOCK_SOURCE, ssoTypeGroupSourceReq},
+	}
+)
+
+func init() {
+	freebsdVersion, _ = syscall.SysctlUint32("kern.osreldate")
+	if freebsdVersion >= 1000000 {
+		sockOpts[ssoMulticastInterface].typ = ssoTypeIPMreqn
+	}
+	if runtime.GOOS == "freebsd" && runtime.GOARCH == "386" {
+		archs, _ := syscall.Sysctl("kern.supported_archs")
+		for _, s := range strings.Fields(archs) {
+			if s == "amd64" {
+				freebsd32o64 = true
+				break
+			}
+		}
+	}
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+	sa := (*sockaddrInet)(unsafe.Pointer(&gr.Group))
+	sa.Len = sizeofSockaddrInet
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+	sa := (*sockaddrInet)(unsafe.Pointer(&gsr.Group))
+	sa.Len = sizeofSockaddrInet
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], grp)
+	sa = (*sockaddrInet)(unsafe.Pointer(&gsr.Source))
+	sa.Len = sizeofSockaddrInet
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], src)
+}

vendor/golang.org/x/net/ipv4/sys_linux.go

@@ -0,0 +1,55 @@
+// Copyright 2014 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"
+	"unsafe"
+)
+
+var (
+	ctlOpts = [ctlMax]ctlOpt{
+		ctlTTL:        {sysIP_TTL, 1, marshalTTL, parseTTL},
+		ctlPacketInfo: {sysIP_PKTINFO, sizeofInetPktinfo, marshalPacketInfo, parsePacketInfo},
+	}
+
+	sockOpts = [ssoMax]sockOpt{
+		ssoTOS:                {sysIP_TOS, ssoTypeInt},
+		ssoTTL:                {sysIP_TTL, ssoTypeInt},
+		ssoMulticastTTL:       {sysIP_MULTICAST_TTL, ssoTypeInt},
+		ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeIPMreqn},
+		ssoMulticastLoopback:  {sysIP_MULTICAST_LOOP, ssoTypeInt},
+		ssoReceiveTTL:         {sysIP_RECVTTL, ssoTypeInt},
+		ssoPacketInfo:         {sysIP_PKTINFO, ssoTypeInt},
+		ssoHeaderPrepend:      {sysIP_HDRINCL, ssoTypeInt},
+		ssoICMPFilter:         {sysICMP_FILTER, ssoTypeICMPFilter},
+		ssoJoinGroup:          {sysMCAST_JOIN_GROUP, ssoTypeGroupReq},
+		ssoLeaveGroup:         {sysMCAST_LEAVE_GROUP, ssoTypeGroupReq},
+		ssoJoinSourceGroup:    {sysMCAST_JOIN_SOURCE_GROUP, ssoTypeGroupSourceReq},
+		ssoLeaveSourceGroup:   {sysMCAST_LEAVE_SOURCE_GROUP, ssoTypeGroupSourceReq},
+		ssoBlockSourceGroup:   {sysMCAST_BLOCK_SOURCE, ssoTypeGroupSourceReq},
+		ssoUnblockSourceGroup: {sysMCAST_UNBLOCK_SOURCE, ssoTypeGroupSourceReq},
+	}
+)
+
+func (pi *inetPktinfo) setIfindex(i int) {
+	pi.Ifindex = int32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+	sa := (*sockaddrInet)(unsafe.Pointer(&gr.Group))
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+	sa := (*sockaddrInet)(unsafe.Pointer(&gsr.Group))
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], grp)
+	sa = (*sockaddrInet)(unsafe.Pointer(&gsr.Source))
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], src)
+}

vendor/golang.org/x/net/ipv4/sys_linux_386.s

@@ -0,0 +1,8 @@
+// Copyright 2014 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.
+
+#include "textflag.h"
+
+TEXT	·socketcall(SB),NOSPLIT,$0-36
+	JMP	syscall·socketcall(SB)

vendor/golang.org/x/net/ipv4/sys_openbsd.go

@@ -0,0 +1,32 @@
+// Copyright 2014 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"
+)
+
+var (
+	ctlOpts = [ctlMax]ctlOpt{
+		ctlTTL:       {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+		ctlDst:       {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+		ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+	}
+
+	sockOpts = [ssoMax]sockOpt{
+		ssoTOS:                {sysIP_TOS, ssoTypeInt},
+		ssoTTL:                {sysIP_TTL, ssoTypeInt},
+		ssoMulticastTTL:       {sysIP_MULTICAST_TTL, ssoTypeByte},
+		ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
+		ssoMulticastLoopback:  {sysIP_MULTICAST_LOOP, ssoTypeByte},
+		ssoReceiveTTL:         {sysIP_RECVTTL, ssoTypeInt},
+		ssoReceiveDst:         {sysIP_RECVDSTADDR, ssoTypeInt},
+		ssoReceiveInterface:   {sysIP_RECVIF, ssoTypeInt},
+		ssoHeaderPrepend:      {sysIP_HDRINCL, ssoTypeInt},
+		ssoJoinGroup:          {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
+		ssoLeaveGroup:         {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
+	}
+)

vendor/golang.org/x/net/ipv4/sys_solaris.go

@@ -0,0 +1,54 @@
+// Copyright 2016 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"
+	"unsafe"
+)
+
+var (
+	ctlOpts = [ctlMax]ctlOpt{
+		ctlTTL:        {sysIP_RECVTTL, 4, marshalTTL, parseTTL},
+		ctlPacketInfo: {sysIP_PKTINFO, sizeofInetPktinfo, marshalPacketInfo, parsePacketInfo},
+	}
+
+	sockOpts = [ssoMax]sockOpt{
+		ssoTOS:                {sysIP_TOS, ssoTypeInt},
+		ssoTTL:                {sysIP_TTL, ssoTypeInt},
+		ssoMulticastTTL:       {sysIP_MULTICAST_TTL, ssoTypeByte},
+		ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
+		ssoMulticastLoopback:  {sysIP_MULTICAST_LOOP, ssoTypeByte},
+		ssoReceiveTTL:         {sysIP_RECVTTL, ssoTypeInt},
+		ssoPacketInfo:         {sysIP_RECVPKTINFO, ssoTypeInt},
+		ssoHeaderPrepend:      {sysIP_HDRINCL, ssoTypeInt},
+		ssoJoinGroup:          {sysMCAST_JOIN_GROUP, ssoTypeGroupReq},
+		ssoLeaveGroup:         {sysMCAST_LEAVE_GROUP, ssoTypeGroupReq},
+		ssoJoinSourceGroup:    {sysMCAST_JOIN_SOURCE_GROUP, ssoTypeGroupSourceReq},
+		ssoLeaveSourceGroup:   {sysMCAST_LEAVE_SOURCE_GROUP, ssoTypeGroupSourceReq},
+		ssoBlockSourceGroup:   {sysMCAST_BLOCK_SOURCE, ssoTypeGroupSourceReq},
+		ssoUnblockSourceGroup: {sysMCAST_UNBLOCK_SOURCE, ssoTypeGroupSourceReq},
+	}
+)
+
+func (pi *inetPktinfo) setIfindex(i int) {
+	pi.Ifindex = uint32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+	sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gr)) + 4))
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+	sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 4))
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], grp)
+	sa = (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 260))
+	sa.Family = syscall.AF_INET
+	copy(sa.Addr[:], src)
+}

vendor/golang.org/x/net/ipv4/sys_solaris_amd64.s

@@ -0,0 +1,8 @@
+// Copyright 2016 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.
+
+#include "textflag.h"
+
+TEXT ·sysvicall6(SB),NOSPLIT,$0-88
+	JMP	syscall·sysvicall6(SB)

vendor/golang.org/x/net/ipv4/sys_stub.go

@@ -0,0 +1,13 @@
+// Copyright 2014 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.
+
+// +build nacl plan9
+
+package ipv4
+
+var (
+	ctlOpts = [ctlMax]ctlOpt{}
+
+	sockOpts = [ssoMax]sockOpt{}
+)

vendor/golang.org/x/net/ipv4/sys_windows.go

@@ -0,0 +1,62 @@
+// Copyright 2014 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
+
+const (
+	// See ws2tcpip.h.
+	sysIP_OPTIONS                = 0x1
+	sysIP_HDRINCL                = 0x2
+	sysIP_TOS                    = 0x3
+	sysIP_TTL                    = 0x4
+	sysIP_MULTICAST_IF           = 0x9
+	sysIP_MULTICAST_TTL          = 0xa
+	sysIP_MULTICAST_LOOP         = 0xb
+	sysIP_ADD_MEMBERSHIP         = 0xc
+	sysIP_DROP_MEMBERSHIP        = 0xd
+	sysIP_DONTFRAGMENT           = 0xe
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0xf
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x10
+	sysIP_PKTINFO                = 0x13
+
+	sizeofInetPktinfo  = 0x8
+	sizeofIPMreq       = 0x8
+	sizeofIPMreqSource = 0xc
+)
+
+type inetPktinfo struct {
+	Addr    [4]byte
+	Ifindex int32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte
+	Interface [4]byte
+}
+
+type ipMreqSource struct {
+	Multiaddr  [4]byte
+	Sourceaddr [4]byte
+	Interface  [4]byte
+}
+
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms738586(v=vs.85).aspx
+var (
+	ctlOpts = [ctlMax]ctlOpt{}
+
+	sockOpts = [ssoMax]sockOpt{
+		ssoTOS:                {sysIP_TOS, ssoTypeInt},
+		ssoTTL:                {sysIP_TTL, ssoTypeInt},
+		ssoMulticastTTL:       {sysIP_MULTICAST_TTL, ssoTypeInt},
+		ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
+		ssoMulticastLoopback:  {sysIP_MULTICAST_LOOP, ssoTypeInt},
+		ssoHeaderPrepend:      {sysIP_HDRINCL, ssoTypeInt},
+		ssoJoinGroup:          {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
+		ssoLeaveGroup:         {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
+	}
+)
+
+func (pi *inetPktinfo) setIfindex(i int) {
+	pi.Ifindex = int32(i)
+}

vendor/golang.org/x/net/ipv4/syscall_linux_386.go

@@ -0,0 +1,31 @@
+// Copyright 2014 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 (
+	"syscall"
+	"unsafe"
+)
+
+const (
+	sysGETSOCKOPT = 0xf
+	sysSETSOCKOPT = 0xe
+)
+
+func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (int, syscall.Errno)
+
+func getsockopt(s uintptr, level, name int, v unsafe.Pointer, l *uint32) error {
+	if _, errno := socketcall(sysGETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(v), uintptr(unsafe.Pointer(l)), 0); errno != 0 {
+		return error(errno)
+	}
+	return nil
+}
+
+func setsockopt(s uintptr, level, name int, v unsafe.Pointer, l uint32) error {
+	if _, errno := socketcall(sysSETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(v), uintptr(l), 0); errno != 0 {
+		return error(errno)
+	}
+	return nil
+}

vendor/golang.org/x/net/ipv4/syscall_solaris.go

@@ -0,0 +1,38 @@
+// Copyright 2016 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 (
+	"syscall"
+	"unsafe"
+)
+
+//go:cgo_import_dynamic libc___xnet_getsockopt __xnet_getsockopt "libsocket.so"
+//go:cgo_import_dynamic libc_setsockopt setsockopt "libsocket.so"
+
+//go:linkname procGetsockopt libc___xnet_getsockopt
+//go:linkname procSetsockopt libc_setsockopt
+
+var (
+	procGetsockopt uintptr
+	procSetsockopt uintptr
+)
+
+func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
+
+func getsockopt(s uintptr, level, name int, v unsafe.Pointer, l *uint32) error {
+	_, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procGetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(v), uintptr(unsafe.Pointer(l)), 0)
+	if errno != 0 {
+		return error(errno)
+	}
+	return nil
+}
+
+func setsockopt(s uintptr, level, name int, v unsafe.Pointer, l uint32) error {
+	if _, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procSetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(v), uintptr(l), 0); errno != 0 {
+		return error(errno)
+	}
+	return nil
+}

vendor/golang.org/x/net/ipv4/syscall_unix.go

@@ -0,0 +1,26 @@
+// Copyright 2014 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.
+
+// +build darwin dragonfly freebsd linux,!386 netbsd openbsd
+
+package ipv4
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func getsockopt(s uintptr, level, name int, v unsafe.Pointer, l *uint32) error {
+	if _, _, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(v), uintptr(unsafe.Pointer(l)), 0); errno != 0 {
+		return error(errno)
+	}
+	return nil
+}
+
+func setsockopt(s uintptr, level, name int, v unsafe.Pointer, l uint32) error {
+	if _, _, errno := syscall.Syscall6(syscall.SYS_SETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(v), uintptr(l), 0); errno != 0 {
+		return error(errno)
+	}
+	return nil
+}

vendor/golang.org/x/net/ipv4/syscall_windows.go

@@ -0,0 +1,18 @@
+// Copyright 2016 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 (
+	"syscall"
+	"unsafe"
+)
+
+func getsockopt(s uintptr, level, name int, v unsafe.Pointer, l *uint32) error {
+	return syscall.Getsockopt(syscall.Handle(s), int32(level), int32(name), (*byte)(v), (*int32)(unsafe.Pointer(l)))
+}
+
+func setsockopt(s uintptr, level, name int, v unsafe.Pointer, l uint32) error {
+	return syscall.Setsockopt(syscall.Handle(s), int32(level), int32(name), (*byte)(v), int32(l))
+}

vendor/golang.org/x/net/ipv4/zsys_darwin.go

@@ -0,0 +1,99 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_darwin.go
+
+package ipv4
+
+const (
+	sysIP_OPTIONS     = 0x1
+	sysIP_HDRINCL     = 0x2
+	sysIP_TOS         = 0x3
+	sysIP_TTL         = 0x4
+	sysIP_RECVOPTS    = 0x5
+	sysIP_RECVRETOPTS = 0x6
+	sysIP_RECVDSTADDR = 0x7
+	sysIP_RETOPTS     = 0x8
+	sysIP_RECVIF      = 0x14
+	sysIP_STRIPHDR    = 0x17
+	sysIP_RECVTTL     = 0x18
+	sysIP_BOUND_IF    = 0x19
+	sysIP_PKTINFO     = 0x1a
+	sysIP_RECVPKTINFO = 0x1a
+
+	sysIP_MULTICAST_IF           = 0x9
+	sysIP_MULTICAST_TTL          = 0xa
+	sysIP_MULTICAST_LOOP         = 0xb
+	sysIP_ADD_MEMBERSHIP         = 0xc
+	sysIP_DROP_MEMBERSHIP        = 0xd
+	sysIP_MULTICAST_VIF          = 0xe
+	sysIP_MULTICAST_IFINDEX      = 0x42
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x46
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
+	sysIP_BLOCK_SOURCE           = 0x48
+	sysIP_UNBLOCK_SOURCE         = 0x49
+	sysMCAST_JOIN_GROUP          = 0x50
+	sysMCAST_LEAVE_GROUP         = 0x51
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x52
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x53
+	sysMCAST_BLOCK_SOURCE        = 0x54
+	sysMCAST_UNBLOCK_SOURCE      = 0x55
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+	sizeofInetPktinfo     = 0xc
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x84
+	sizeofGroupSourceReq = 0x104
+)
+
+type sockaddrStorage struct {
+	Len         uint8
+	Family      uint8
+	X__ss_pad1  [6]int8
+	X__ss_align int64
+	X__ss_pad2  [112]int8
+}
+
+type sockaddrInet struct {
+	Len    uint8
+	Family uint8
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	Zero   [8]int8
+}
+
+type inetPktinfo struct {
+	Ifindex  uint32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  [4]byte /* in_addr */
+	Sourceaddr [4]byte /* in_addr */
+	Interface  [4]byte /* in_addr */
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [128]byte
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [128]byte
+	Pad_cgo_1 [128]byte
+}

vendor/golang.org/x/net/ipv4/zsys_dragonfly.go

@@ -0,0 +1,31 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_dragonfly.go
+
+package ipv4
+
+const (
+	sysIP_OPTIONS     = 0x1
+	sysIP_HDRINCL     = 0x2
+	sysIP_TOS         = 0x3
+	sysIP_TTL         = 0x4
+	sysIP_RECVOPTS    = 0x5
+	sysIP_RECVRETOPTS = 0x6
+	sysIP_RECVDSTADDR = 0x7
+	sysIP_RETOPTS     = 0x8
+	sysIP_RECVIF      = 0x14
+	sysIP_RECVTTL     = 0x41
+
+	sysIP_MULTICAST_IF    = 0x9
+	sysIP_MULTICAST_TTL   = 0xa
+	sysIP_MULTICAST_LOOP  = 0xb
+	sysIP_MULTICAST_VIF   = 0xe
+	sysIP_ADD_MEMBERSHIP  = 0xc
+	sysIP_DROP_MEMBERSHIP = 0xd
+
+	sizeofIPMreq = 0x8
+)
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}

vendor/golang.org/x/net/ipv4/zsys_freebsd_386.go

@@ -0,0 +1,93 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_freebsd.go
+
+package ipv4
+
+const (
+	sysIP_OPTIONS     = 0x1
+	sysIP_HDRINCL     = 0x2
+	sysIP_TOS         = 0x3
+	sysIP_TTL         = 0x4
+	sysIP_RECVOPTS    = 0x5
+	sysIP_RECVRETOPTS = 0x6
+	sysIP_RECVDSTADDR = 0x7
+	sysIP_SENDSRCADDR = 0x7
+	sysIP_RETOPTS     = 0x8
+	sysIP_RECVIF      = 0x14
+	sysIP_ONESBCAST   = 0x17
+	sysIP_BINDANY     = 0x18
+	sysIP_RECVTTL     = 0x41
+	sysIP_MINTTL      = 0x42
+	sysIP_DONTFRAG    = 0x43
+	sysIP_RECVTOS     = 0x44
+
+	sysIP_MULTICAST_IF           = 0x9
+	sysIP_MULTICAST_TTL          = 0xa
+	sysIP_MULTICAST_LOOP         = 0xb
+	sysIP_ADD_MEMBERSHIP         = 0xc
+	sysIP_DROP_MEMBERSHIP        = 0xd
+	sysIP_MULTICAST_VIF          = 0xe
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x46
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
+	sysIP_BLOCK_SOURCE           = 0x48
+	sysIP_UNBLOCK_SOURCE         = 0x49
+	sysMCAST_JOIN_GROUP          = 0x50
+	sysMCAST_LEAVE_GROUP         = 0x51
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x52
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x53
+	sysMCAST_BLOCK_SOURCE        = 0x54
+	sysMCAST_UNBLOCK_SOURCE      = 0x55
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x84
+	sizeofGroupSourceReq = 0x104
+)
+
+type sockaddrStorage struct {
+	Len         uint8
+	Family      uint8
+	X__ss_pad1  [6]int8
+	X__ss_align int64
+	X__ss_pad2  [112]int8
+}
+
+type sockaddrInet struct {
+	Len    uint8
+	Family uint8
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	Zero   [8]int8
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  [4]byte /* in_addr */
+	Sourceaddr [4]byte /* in_addr */
+	Interface  [4]byte /* in_addr */
+}
+
+type groupReq struct {
+	Interface uint32
+	Group     sockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Group     sockaddrStorage
+	Source    sockaddrStorage
+}

vendor/golang.org/x/net/ipv4/zsys_freebsd_amd64.go

@@ -0,0 +1,95 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_freebsd.go
+
+package ipv4
+
+const (
+	sysIP_OPTIONS     = 0x1
+	sysIP_HDRINCL     = 0x2
+	sysIP_TOS         = 0x3
+	sysIP_TTL         = 0x4
+	sysIP_RECVOPTS    = 0x5
+	sysIP_RECVRETOPTS = 0x6
+	sysIP_RECVDSTADDR = 0x7
+	sysIP_SENDSRCADDR = 0x7
+	sysIP_RETOPTS     = 0x8
+	sysIP_RECVIF      = 0x14
+	sysIP_ONESBCAST   = 0x17
+	sysIP_BINDANY     = 0x18
+	sysIP_RECVTTL     = 0x41
+	sysIP_MINTTL      = 0x42
+	sysIP_DONTFRAG    = 0x43
+	sysIP_RECVTOS     = 0x44
+
+	sysIP_MULTICAST_IF           = 0x9
+	sysIP_MULTICAST_TTL          = 0xa
+	sysIP_MULTICAST_LOOP         = 0xb
+	sysIP_ADD_MEMBERSHIP         = 0xc
+	sysIP_DROP_MEMBERSHIP        = 0xd
+	sysIP_MULTICAST_VIF          = 0xe
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x46
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
+	sysIP_BLOCK_SOURCE           = 0x48
+	sysIP_UNBLOCK_SOURCE         = 0x49
+	sysMCAST_JOIN_GROUP          = 0x50
+	sysMCAST_LEAVE_GROUP         = 0x51
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x52
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x53
+	sysMCAST_BLOCK_SOURCE        = 0x54
+	sysMCAST_UNBLOCK_SOURCE      = 0x55
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+)
+
+type sockaddrStorage struct {
+	Len         uint8
+	Family      uint8
+	X__ss_pad1  [6]int8
+	X__ss_align int64
+	X__ss_pad2  [112]int8
+}
+
+type sockaddrInet struct {
+	Len    uint8
+	Family uint8
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	Zero   [8]int8
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  [4]byte /* in_addr */
+	Sourceaddr [4]byte /* in_addr */
+	Interface  [4]byte /* in_addr */
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     sockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     sockaddrStorage
+	Source    sockaddrStorage
+}

vendor/golang.org/x/net/ipv4/zsys_freebsd_arm.go

@@ -0,0 +1,95 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_freebsd.go
+
+package ipv4
+
+const (
+	sysIP_OPTIONS     = 0x1
+	sysIP_HDRINCL     = 0x2
+	sysIP_TOS         = 0x3
+	sysIP_TTL         = 0x4
+	sysIP_RECVOPTS    = 0x5
+	sysIP_RECVRETOPTS = 0x6
+	sysIP_RECVDSTADDR = 0x7
+	sysIP_SENDSRCADDR = 0x7
+	sysIP_RETOPTS     = 0x8
+	sysIP_RECVIF      = 0x14
+	sysIP_ONESBCAST   = 0x17
+	sysIP_BINDANY     = 0x18
+	sysIP_RECVTTL     = 0x41
+	sysIP_MINTTL      = 0x42
+	sysIP_DONTFRAG    = 0x43
+	sysIP_RECVTOS     = 0x44
+
+	sysIP_MULTICAST_IF           = 0x9
+	sysIP_MULTICAST_TTL          = 0xa
+	sysIP_MULTICAST_LOOP         = 0xb
+	sysIP_ADD_MEMBERSHIP         = 0xc
+	sysIP_DROP_MEMBERSHIP        = 0xd
+	sysIP_MULTICAST_VIF          = 0xe
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x46
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
+	sysIP_BLOCK_SOURCE           = 0x48
+	sysIP_UNBLOCK_SOURCE         = 0x49
+	sysMCAST_JOIN_GROUP          = 0x50
+	sysMCAST_LEAVE_GROUP         = 0x51
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x52
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x53
+	sysMCAST_BLOCK_SOURCE        = 0x54
+	sysMCAST_UNBLOCK_SOURCE      = 0x55
+
+	sizeofSockaddrStorage = 0x80
+	sizeofSockaddrInet    = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+)
+
+type sockaddrStorage struct {
+	Len         uint8
+	Family      uint8
+	X__ss_pad1  [6]int8
+	X__ss_align int64
+	X__ss_pad2  [112]int8
+}
+
+type sockaddrInet struct {
+	Len    uint8
+	Family uint8
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	Zero   [8]int8
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  [4]byte /* in_addr */
+	Sourceaddr [4]byte /* in_addr */
+	Interface  [4]byte /* in_addr */
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     sockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     sockaddrStorage
+	Source    sockaddrStorage
+}

vendor/golang.org/x/net/ipv4/zsys_linux_386.go

@@ -0,0 +1,146 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x84
+	sizeofGroupSourceReq = 0x104
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [2]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_amd64.go

@@ -0,0 +1,148 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [6]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_arm.go

@@ -0,0 +1,146 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x84
+	sizeofGroupSourceReq = 0x104
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [2]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_arm64.go

@@ -0,0 +1,148 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [6]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_mips.go

@@ -0,0 +1,146 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x84
+	sizeofGroupSourceReq = 0x104
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [2]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_mips64.go

@@ -0,0 +1,148 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [6]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_mips64le.go

@@ -0,0 +1,148 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [6]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_mipsle.go

@@ -0,0 +1,146 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x84
+	sizeofGroupSourceReq = 0x104
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [2]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_ppc.go

@@ -0,0 +1,146 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x84
+	sizeofGroupSourceReq = 0x104
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]uint8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [2]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_ppc64.go

@@ -0,0 +1,148 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [6]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_ppc64le.go

@@ -0,0 +1,148 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [6]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_linux_s390x.go

@@ -0,0 +1,148 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+	sysIP_TOS             = 0x1
+	sysIP_TTL             = 0x2
+	sysIP_HDRINCL         = 0x3
+	sysIP_OPTIONS         = 0x4
+	sysIP_ROUTER_ALERT    = 0x5
+	sysIP_RECVOPTS        = 0x6
+	sysIP_RETOPTS         = 0x7
+	sysIP_PKTINFO         = 0x8
+	sysIP_PKTOPTIONS      = 0x9
+	sysIP_MTU_DISCOVER    = 0xa
+	sysIP_RECVERR         = 0xb
+	sysIP_RECVTTL         = 0xc
+	sysIP_RECVTOS         = 0xd
+	sysIP_MTU             = 0xe
+	sysIP_FREEBIND        = 0xf
+	sysIP_TRANSPARENT     = 0x13
+	sysIP_RECVRETOPTS     = 0x7
+	sysIP_ORIGDSTADDR     = 0x14
+	sysIP_RECVORIGDSTADDR = 0x14
+	sysIP_MINTTL          = 0x15
+	sysIP_NODEFRAG        = 0x16
+	sysIP_UNICAST_IF      = 0x32
+
+	sysIP_MULTICAST_IF           = 0x20
+	sysIP_MULTICAST_TTL          = 0x21
+	sysIP_MULTICAST_LOOP         = 0x22
+	sysIP_ADD_MEMBERSHIP         = 0x23
+	sysIP_DROP_MEMBERSHIP        = 0x24
+	sysIP_UNBLOCK_SOURCE         = 0x25
+	sysIP_BLOCK_SOURCE           = 0x26
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x27
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+	sysIP_MSFILTER               = 0x29
+	sysMCAST_JOIN_GROUP          = 0x2a
+	sysMCAST_LEAVE_GROUP         = 0x2d
+	sysMCAST_JOIN_SOURCE_GROUP   = 0x2e
+	sysMCAST_LEAVE_SOURCE_GROUP  = 0x2f
+	sysMCAST_BLOCK_SOURCE        = 0x2b
+	sysMCAST_UNBLOCK_SOURCE      = 0x2c
+	sysMCAST_MSFILTER            = 0x30
+	sysIP_MULTICAST_ALL          = 0x31
+
+	sysICMP_FILTER = 0x1
+
+	sysSO_EE_ORIGIN_NONE         = 0x0
+	sysSO_EE_ORIGIN_LOCAL        = 0x1
+	sysSO_EE_ORIGIN_ICMP         = 0x2
+	sysSO_EE_ORIGIN_ICMP6        = 0x3
+	sysSO_EE_ORIGIN_TXSTATUS     = 0x4
+	sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+	sysSOL_SOCKET       = 0x1
+	sysSO_ATTACH_FILTER = 0x1a
+
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqn        = 0xc
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}
+
+type sockFProg struct {
+	Len       uint16
+	Pad_cgo_0 [6]byte
+	Filter    *sockFilter
+}
+
+type sockFilter struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}

vendor/golang.org/x/net/ipv4/zsys_netbsd.go

@@ -0,0 +1,30 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_netbsd.go
+
+package ipv4
+
+const (
+	sysIP_OPTIONS     = 0x1
+	sysIP_HDRINCL     = 0x2
+	sysIP_TOS         = 0x3
+	sysIP_TTL         = 0x4
+	sysIP_RECVOPTS    = 0x5
+	sysIP_RECVRETOPTS = 0x6
+	sysIP_RECVDSTADDR = 0x7
+	sysIP_RETOPTS     = 0x8
+	sysIP_RECVIF      = 0x14
+	sysIP_RECVTTL     = 0x17
+
+	sysIP_MULTICAST_IF    = 0x9
+	sysIP_MULTICAST_TTL   = 0xa
+	sysIP_MULTICAST_LOOP  = 0xb
+	sysIP_ADD_MEMBERSHIP  = 0xc
+	sysIP_DROP_MEMBERSHIP = 0xd
+
+	sizeofIPMreq = 0x8
+)
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}

vendor/golang.org/x/net/ipv4/zsys_openbsd.go

@@ -0,0 +1,30 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_openbsd.go
+
+package ipv4
+
+const (
+	sysIP_OPTIONS     = 0x1
+	sysIP_HDRINCL     = 0x2
+	sysIP_TOS         = 0x3
+	sysIP_TTL         = 0x4
+	sysIP_RECVOPTS    = 0x5
+	sysIP_RECVRETOPTS = 0x6
+	sysIP_RECVDSTADDR = 0x7
+	sysIP_RETOPTS     = 0x8
+	sysIP_RECVIF      = 0x1e
+	sysIP_RECVTTL     = 0x1f
+
+	sysIP_MULTICAST_IF    = 0x9
+	sysIP_MULTICAST_TTL   = 0xa
+	sysIP_MULTICAST_LOOP  = 0xb
+	sysIP_ADD_MEMBERSHIP  = 0xc
+	sysIP_DROP_MEMBERSHIP = 0xd
+
+	sizeofIPMreq = 0x8
+)
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}

vendor/golang.org/x/net/ipv4/zsys_solaris.go

@@ -0,0 +1,100 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs defs_solaris.go
+
+package ipv4
+
+const (
+	sysIP_OPTIONS     = 0x1
+	sysIP_HDRINCL     = 0x2
+	sysIP_TOS         = 0x3
+	sysIP_TTL         = 0x4
+	sysIP_RECVOPTS    = 0x5
+	sysIP_RECVRETOPTS = 0x6
+	sysIP_RECVDSTADDR = 0x7
+	sysIP_RETOPTS     = 0x8
+	sysIP_RECVIF      = 0x9
+	sysIP_RECVSLLA    = 0xa
+	sysIP_RECVTTL     = 0xb
+
+	sysIP_MULTICAST_IF           = 0x10
+	sysIP_MULTICAST_TTL          = 0x11
+	sysIP_MULTICAST_LOOP         = 0x12
+	sysIP_ADD_MEMBERSHIP         = 0x13
+	sysIP_DROP_MEMBERSHIP        = 0x14
+	sysIP_BLOCK_SOURCE           = 0x15
+	sysIP_UNBLOCK_SOURCE         = 0x16
+	sysIP_ADD_SOURCE_MEMBERSHIP  = 0x17
+	sysIP_DROP_SOURCE_MEMBERSHIP = 0x18
+	sysIP_NEXTHOP                = 0x19
+
+	sysIP_PKTINFO     = 0x1a
+	sysIP_RECVPKTINFO = 0x1a
+	sysIP_DONTFRAG    = 0x1b
+
+	sysIP_BOUND_IF      = 0x41
+	sysIP_UNSPEC_SRC    = 0x42
+	sysIP_BROADCAST_TTL = 0x43
+	sysIP_DHCPINIT_IF   = 0x45
+
+	sysIP_REUSEADDR = 0x104
+	sysIP_DONTROUTE = 0x105
+	sysIP_BROADCAST = 0x106
+
+	sysMCAST_JOIN_GROUP         = 0x29
+	sysMCAST_LEAVE_GROUP        = 0x2a
+	sysMCAST_BLOCK_SOURCE       = 0x2b
+	sysMCAST_UNBLOCK_SOURCE     = 0x2c
+	sysMCAST_JOIN_SOURCE_GROUP  = 0x2d
+	sysMCAST_LEAVE_SOURCE_GROUP = 0x2e
+
+	sizeofSockaddrStorage = 0x100
+	sizeofSockaddrInet    = 0x10
+	sizeofInetPktinfo     = 0xc
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x104
+	sizeofGroupSourceReq = 0x204
+)
+
+type sockaddrStorage struct {
+	Family     uint16
+	X_ss_pad1  [6]int8
+	X_ss_align float64
+	X_ss_pad2  [240]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	Zero   [8]int8
+}
+
+type inetPktinfo struct {
+	Ifindex  uint32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqSource struct {
+	Multiaddr  [4]byte /* in_addr */
+	Sourceaddr [4]byte /* in_addr */
+	Interface  [4]byte /* in_addr */
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [256]byte
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [256]byte
+	Pad_cgo_1 [256]byte
+}

vendor/manifest

@@ -344,6 +344,15 @@
 			"branch": "master",
 			"path": "/internal/netreflect"
 		},
+		{
+			"importpath": "golang.org/x/net/ipv4",
+			"repository": "https://go.googlesource.com/net",
+			"vcs": "git",
+			"revision": "45e771701b814666a7eb299e6c7a57d0b1799e91",
+			"branch": "master",
+			"path": "/ipv4",
+			"notests": true
+		},
 		{
 			"importpath": "golang.org/x/net/ipv6",
 			"repository": "https://go.googlesource.com/net",