github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/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  )
    16  
    17  type sysSockoptLen int32
    18  
    19  var (
    20  	ctlOpts = [ctlMax]ctlOpt{
    21  		ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
    22  		ctlHopLimit:     {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
    23  		ctlPacketInfo:   {sysIPV6_PKTINFO, sysSizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
    24  		ctlNextHop:      {sysIPV6_NEXTHOP, sysSizeofSockaddrInet6, marshalNextHop, parseNextHop},
    25  		ctlPathMTU:      {sysIPV6_PATHMTU, sysSizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
    26  	}
    27  
    28  	sockOpts = [ssoMax]sockOpt{
    29  		ssoTrafficClass:        {iana.ProtocolIPv6, sysIPV6_TCLASS, ssoTypeInt},
    30  		ssoHopLimit:            {iana.ProtocolIPv6, sysIPV6_UNICAST_HOPS, ssoTypeInt},
    31  		ssoMulticastInterface:  {iana.ProtocolIPv6, sysIPV6_MULTICAST_IF, ssoTypeInterface},
    32  		ssoMulticastHopLimit:   {iana.ProtocolIPv6, sysIPV6_MULTICAST_HOPS, ssoTypeInt},
    33  		ssoMulticastLoopback:   {iana.ProtocolIPv6, sysIPV6_MULTICAST_LOOP, ssoTypeInt},
    34  		ssoReceiveTrafficClass: {iana.ProtocolIPv6, sysIPV6_RECVTCLASS, ssoTypeInt},
    35  		ssoReceiveHopLimit:     {iana.ProtocolIPv6, sysIPV6_RECVHOPLIMIT, ssoTypeInt},
    36  		ssoReceivePacketInfo:   {iana.ProtocolIPv6, sysIPV6_RECVPKTINFO, ssoTypeInt},
    37  		ssoReceivePathMTU:      {iana.ProtocolIPv6, sysIPV6_RECVPATHMTU, ssoTypeInt},
    38  		ssoPathMTU:             {iana.ProtocolIPv6, sysIPV6_PATHMTU, ssoTypeMTUInfo},
    39  		ssoChecksum:            {iana.ProtocolIPv6, sysIPV6_CHECKSUM, ssoTypeInt},
    40  		ssoICMPFilter:          {iana.ProtocolIPv6ICMP, sysICMP6_FILTER, ssoTypeICMPFilter},
    41  		ssoJoinGroup:           {iana.ProtocolIPv6, sysMCAST_JOIN_GROUP, ssoTypeGroupReq},
    42  		ssoLeaveGroup:          {iana.ProtocolIPv6, sysMCAST_LEAVE_GROUP, ssoTypeGroupReq},
    43  		ssoJoinSourceGroup:     {iana.ProtocolIPv6, sysMCAST_JOIN_SOURCE_GROUP, ssoTypeGroupSourceReq},
    44  		ssoLeaveSourceGroup:    {iana.ProtocolIPv6, sysMCAST_LEAVE_SOURCE_GROUP, ssoTypeGroupSourceReq},
    45  		ssoBlockSourceGroup:    {iana.ProtocolIPv6, sysMCAST_BLOCK_SOURCE, ssoTypeGroupSourceReq},
    46  		ssoUnblockSourceGroup:  {iana.ProtocolIPv6, sysMCAST_UNBLOCK_SOURCE, ssoTypeGroupSourceReq},
    47  	}
    48  )
    49  
    50  func init() {
    51  	if runtime.GOOS == "freebsd" && runtime.GOARCH == "386" {
    52  		archs, _ := syscall.Sysctl("kern.supported_archs")
    53  		for _, s := range strings.Fields(archs) {
    54  			if s == "amd64" {
    55  				freebsd32o64 = true
    56  				break
    57  			}
    58  		}
    59  	}
    60  }
    61  
    62  func (sa *sysSockaddrInet6) setSockaddr(ip net.IP, i int) {
    63  	sa.Len = sysSizeofSockaddrInet6
    64  	sa.Family = syscall.AF_INET6
    65  	copy(sa.Addr[:], ip)
    66  	sa.Scope_id = uint32(i)
    67  }
    68  
    69  func (pi *sysInet6Pktinfo) setIfindex(i int) {
    70  	pi.Ifindex = uint32(i)
    71  }
    72  
    73  func (mreq *sysIPv6Mreq) setIfindex(i int) {
    74  	mreq.Interface = uint32(i)
    75  }
    76  
    77  func (gr *sysGroupReq) setGroup(grp net.IP) {
    78  	sa := (*sysSockaddrInet6)(unsafe.Pointer(&gr.Group))
    79  	sa.Len = sysSizeofSockaddrInet6
    80  	sa.Family = syscall.AF_INET6
    81  	copy(sa.Addr[:], grp)
    82  }
    83  
    84  func (gsr *sysGroupSourceReq) setSourceGroup(grp, src net.IP) {
    85  	sa := (*sysSockaddrInet6)(unsafe.Pointer(&gsr.Group))
    86  	sa.Len = sysSizeofSockaddrInet6
    87  	sa.Family = syscall.AF_INET6
    88  	copy(sa.Addr[:], grp)
    89  	sa = (*sysSockaddrInet6)(unsafe.Pointer(&gsr.Source))
    90  	sa.Len = sysSizeofSockaddrInet6
    91  	sa.Family = syscall.AF_INET6
    92  	copy(sa.Addr[:], src)
    93  }