blob: b68725cba6ec337f1234e33937783476e47bac96 [file] [log] [blame]
// 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 ipv6
import (
"net"
"runtime"
"strings"
"syscall"
"unsafe"
"golang.org/x/net/internal/iana"
)
type sysSockoptLen int32
var (
ctlOpts = [ctlMax]ctlOpt{
ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
ctlHopLimit: {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
ctlPacketInfo: {sysIPV6_PKTINFO, sysSizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
ctlNextHop: {sysIPV6_NEXTHOP, sysSizeofSockaddrInet6, marshalNextHop, parseNextHop},
ctlPathMTU: {sysIPV6_PATHMTU, sysSizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
}
sockOpts = [ssoMax]sockOpt{
ssoTrafficClass: {iana.ProtocolIPv6, sysIPV6_TCLASS, ssoTypeInt},
ssoHopLimit: {iana.ProtocolIPv6, sysIPV6_UNICAST_HOPS, ssoTypeInt},
ssoMulticastInterface: {iana.ProtocolIPv6, sysIPV6_MULTICAST_IF, ssoTypeInterface},
ssoMulticastHopLimit: {iana.ProtocolIPv6, sysIPV6_MULTICAST_HOPS, ssoTypeInt},
ssoMulticastLoopback: {iana.ProtocolIPv6, sysIPV6_MULTICAST_LOOP, ssoTypeInt},
ssoReceiveTrafficClass: {iana.ProtocolIPv6, sysIPV6_RECVTCLASS, ssoTypeInt},
ssoReceiveHopLimit: {iana.ProtocolIPv6, sysIPV6_RECVHOPLIMIT, ssoTypeInt},
ssoReceivePacketInfo: {iana.ProtocolIPv6, sysIPV6_RECVPKTINFO, ssoTypeInt},
ssoReceivePathMTU: {iana.ProtocolIPv6, sysIPV6_RECVPATHMTU, ssoTypeInt},
ssoPathMTU: {iana.ProtocolIPv6, sysIPV6_PATHMTU, ssoTypeMTUInfo},
ssoChecksum: {iana.ProtocolIPv6, sysIPV6_CHECKSUM, ssoTypeInt},
ssoICMPFilter: {iana.ProtocolIPv6ICMP, sysICMP6_FILTER, ssoTypeICMPFilter},
ssoJoinGroup: {iana.ProtocolIPv6, sysMCAST_JOIN_GROUP, ssoTypeGroupReq},
ssoLeaveGroup: {iana.ProtocolIPv6, sysMCAST_LEAVE_GROUP, ssoTypeGroupReq},
ssoJoinSourceGroup: {iana.ProtocolIPv6, sysMCAST_JOIN_SOURCE_GROUP, ssoTypeGroupSourceReq},
ssoLeaveSourceGroup: {iana.ProtocolIPv6, sysMCAST_LEAVE_SOURCE_GROUP, ssoTypeGroupSourceReq},
ssoBlockSourceGroup: {iana.ProtocolIPv6, sysMCAST_BLOCK_SOURCE, ssoTypeGroupSourceReq},
ssoUnblockSourceGroup: {iana.ProtocolIPv6, sysMCAST_UNBLOCK_SOURCE, ssoTypeGroupSourceReq},
}
)
func init() {
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 (sa *sysSockaddrInet6) setSockaddr(ip net.IP, i int) {
sa.Len = sysSizeofSockaddrInet6
sa.Family = syscall.AF_INET6
copy(sa.Addr[:], ip)
sa.Scope_id = uint32(i)
}
func (pi *sysInet6Pktinfo) setIfindex(i int) {
pi.Ifindex = uint32(i)
}
func (mreq *sysIPv6Mreq) setIfindex(i int) {
mreq.Interface = uint32(i)
}
func (gr *sysGroupReq) setGroup(grp net.IP) {
sa := (*sysSockaddrInet6)(unsafe.Pointer(&gr.Group))
sa.Len = sysSizeofSockaddrInet6
sa.Family = syscall.AF_INET6
copy(sa.Addr[:], grp)
}
func (gsr *sysGroupSourceReq) setSourceGroup(grp, src net.IP) {
sa := (*sysSockaddrInet6)(unsafe.Pointer(&gsr.Group))
sa.Len = sysSizeofSockaddrInet6
sa.Family = syscall.AF_INET6
copy(sa.Addr[:], grp)
sa = (*sysSockaddrInet6)(unsafe.Pointer(&gsr.Source))
sa.Len = sysSizeofSockaddrInet6
sa.Family = syscall.AF_INET6
copy(sa.Addr[:], src)
}