github.com/binkynet/BinkyNet@v1.12.1-0.20240421190447-da4e34c20be0/proto_vendor/golang.org/x/net/ipv6/sys_darwin.go (about)

     1  // Copyright 2013 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package ipv6
     6  
     7  import (
     8  	"net"
     9  	"syscall"
    10  	"unsafe"
    11  
    12  	"golang.org/x/net/internal/iana"
    13  	"golang.org/x/net/internal/socket"
    14  )
    15  
    16  var (
    17  	ctlOpts = [ctlMax]ctlOpt{
    18  		ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
    19  		ctlHopLimit:     {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
    20  		ctlPacketInfo:   {sysIPV6_PKTINFO, sizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
    21  		ctlNextHop:      {sysIPV6_NEXTHOP, sizeofSockaddrInet6, marshalNextHop, parseNextHop},
    22  		ctlPathMTU:      {sysIPV6_PATHMTU, sizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
    23  	}
    24  
    25  	sockOpts = map[int]*sockOpt{
    26  		ssoHopLimit:            {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
    27  		ssoMulticastInterface:  {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
    28  		ssoMulticastHopLimit:   {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
    29  		ssoMulticastLoopback:   {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
    30  		ssoTrafficClass:        {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_TCLASS, Len: 4}},
    31  		ssoReceiveTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVTCLASS, Len: 4}},
    32  		ssoReceiveHopLimit:     {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVHOPLIMIT, Len: 4}},
    33  		ssoReceivePacketInfo:   {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPKTINFO, Len: 4}},
    34  		ssoReceivePathMTU:      {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPATHMTU, Len: 4}},
    35  		ssoPathMTU:             {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_PATHMTU, Len: sizeofIPv6Mtuinfo}},
    36  		ssoChecksum:            {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_CHECKSUM, Len: 4}},
    37  		ssoICMPFilter:          {Option: socket.Option{Level: iana.ProtocolIPv6ICMP, Name: sysICMP6_FILTER, Len: sizeofICMPv6Filter}},
    38  		ssoJoinGroup:           {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
    39  		ssoLeaveGroup:          {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
    40  		ssoJoinSourceGroup:     {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
    41  		ssoLeaveSourceGroup:    {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
    42  		ssoBlockSourceGroup:    {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
    43  		ssoUnblockSourceGroup:  {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
    44  	}
    45  )
    46  
    47  func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
    48  	sa.Len = sizeofSockaddrInet6
    49  	sa.Family = syscall.AF_INET6
    50  	copy(sa.Addr[:], ip)
    51  	sa.Scope_id = uint32(i)
    52  }
    53  
    54  func (pi *inet6Pktinfo) setIfindex(i int) {
    55  	pi.Ifindex = uint32(i)
    56  }
    57  
    58  func (mreq *ipv6Mreq) setIfindex(i int) {
    59  	mreq.Interface = uint32(i)
    60  }
    61  
    62  func (gr *groupReq) setGroup(grp net.IP) {
    63  	sa := (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gr)) + 4))
    64  	sa.Len = sizeofSockaddrInet6
    65  	sa.Family = syscall.AF_INET6
    66  	copy(sa.Addr[:], grp)
    67  }
    68  
    69  func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
    70  	sa := (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 4))
    71  	sa.Len = sizeofSockaddrInet6
    72  	sa.Family = syscall.AF_INET6
    73  	copy(sa.Addr[:], grp)
    74  	sa = (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 132))
    75  	sa.Len = sizeofSockaddrInet6
    76  	sa.Family = syscall.AF_INET6
    77  	copy(sa.Addr[:], src)
    78  }