github.com/binkynet/BinkyNet@v1.12.1-0.20240421190447-da4e34c20be0/proto_vendor/golang.org/x/net/ipv6/sys_freebsd.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  	"runtime"
    10  	"strings"
    11  	"syscall"
    12  	"unsafe"
    13  
    14  	"golang.org/x/net/internal/iana"
    15  	"golang.org/x/net/internal/socket"
    16  )
    17  
    18  var (
    19  	ctlOpts = [ctlMax]ctlOpt{
    20  		ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
    21  		ctlHopLimit:     {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
    22  		ctlPacketInfo:   {sysIPV6_PKTINFO, sizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
    23  		ctlNextHop:      {sysIPV6_NEXTHOP, sizeofSockaddrInet6, marshalNextHop, parseNextHop},
    24  		ctlPathMTU:      {sysIPV6_PATHMTU, sizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
    25  	}
    26  
    27  	sockOpts = map[int]sockOpt{
    28  		ssoTrafficClass:        {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_TCLASS, Len: 4}},
    29  		ssoHopLimit:            {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
    30  		ssoMulticastInterface:  {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
    31  		ssoMulticastHopLimit:   {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
    32  		ssoMulticastLoopback:   {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
    33  		ssoReceiveTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVTCLASS, Len: 4}},
    34  		ssoReceiveHopLimit:     {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVHOPLIMIT, Len: 4}},
    35  		ssoReceivePacketInfo:   {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPKTINFO, Len: 4}},
    36  		ssoReceivePathMTU:      {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPATHMTU, Len: 4}},
    37  		ssoPathMTU:             {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_PATHMTU, Len: sizeofIPv6Mtuinfo}},
    38  		ssoChecksum:            {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_CHECKSUM, Len: 4}},
    39  		ssoICMPFilter:          {Option: socket.Option{Level: iana.ProtocolIPv6ICMP, Name: sysICMP6_FILTER, Len: sizeofICMPv6Filter}},
    40  		ssoJoinGroup:           {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
    41  		ssoLeaveGroup:          {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
    42  		ssoJoinSourceGroup:     {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
    43  		ssoLeaveSourceGroup:    {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
    44  		ssoBlockSourceGroup:    {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
    45  		ssoUnblockSourceGroup:  {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
    46  	}
    47  )
    48  
    49  func init() {
    50  	if runtime.GOOS == "freebsd" && runtime.GOARCH == "386" {
    51  		archs, _ := syscall.Sysctl("kern.supported_archs")
    52  		for _, s := range strings.Fields(archs) {
    53  			if s == "amd64" {
    54  				compatFreeBSD32 = true
    55  				break
    56  			}
    57  		}
    58  	}
    59  }
    60  
    61  func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
    62  	sa.Len = sizeofSockaddrInet6
    63  	sa.Family = syscall.AF_INET6
    64  	copy(sa.Addr[:], ip)
    65  	sa.Scope_id = uint32(i)
    66  }
    67  
    68  func (pi *inet6Pktinfo) setIfindex(i int) {
    69  	pi.Ifindex = uint32(i)
    70  }
    71  
    72  func (mreq *ipv6Mreq) setIfindex(i int) {
    73  	mreq.Interface = uint32(i)
    74  }
    75  
    76  func (gr *groupReq) setGroup(grp net.IP) {
    77  	sa := (*sockaddrInet6)(unsafe.Pointer(&gr.Group))
    78  	sa.Len = sizeofSockaddrInet6
    79  	sa.Family = syscall.AF_INET6
    80  	copy(sa.Addr[:], grp)
    81  }
    82  
    83  func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
    84  	sa := (*sockaddrInet6)(unsafe.Pointer(&gsr.Group))
    85  	sa.Len = sizeofSockaddrInet6
    86  	sa.Family = syscall.AF_INET6
    87  	copy(sa.Addr[:], grp)
    88  	sa = (*sockaddrInet6)(unsafe.Pointer(&gsr.Source))
    89  	sa.Len = sizeofSockaddrInet6
    90  	sa.Family = syscall.AF_INET6
    91  	copy(sa.Addr[:], src)
    92  }