go.net/ipv6: implement each platform's sticky socket option binding table
Also adds helper methods for platform-dependent types.
LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/165920044
diff --git a/ipv6/sys_bsd.go b/ipv6/sys_bsd.go
index 9e2ef4b..226f574 100644
--- a/ipv6/sys_bsd.go
+++ b/ipv6/sys_bsd.go
@@ -11,27 +11,38 @@
"syscall"
)
-// RFC 3542 options
-const (
- // See /usr/include/netinet6/in6.h.
- sysSockoptReceiveTrafficClass = syscall.IPV6_RECVTCLASS
- sysSockoptTrafficClass = syscall.IPV6_TCLASS
- sysSockoptReceiveHopLimit = syscall.IPV6_RECVHOPLIMIT
- sysSockoptHopLimit = syscall.IPV6_HOPLIMIT
- sysSockoptReceivePacketInfo = syscall.IPV6_RECVPKTINFO
- sysSockoptPacketInfo = syscall.IPV6_PKTINFO
- sysSockoptReceivePathMTU = syscall.IPV6_RECVPATHMTU
- sysSockoptPathMTU = syscall.IPV6_PATHMTU
- sysSockoptNextHop = syscall.IPV6_NEXTHOP
- sysSockoptChecksum = syscall.IPV6_CHECKSUM
+type sysSockoptLen int32
- // See /usr/include/netinet6/in6.h.
- sysSockoptICMPFilter = 0x12 // syscall.ICMP6_FILTER
+var (
+ sockOpts = [ssoMax]sockOpt{
+ ssoTrafficClass: {ianaProtocolIPv6, sysIPV6_TCLASS, ssoTypeInt},
+ ssoHopLimit: {ianaProtocolIPv6, sysIPV6_UNICAST_HOPS, ssoTypeInt},
+ ssoMulticastInterface: {ianaProtocolIPv6, sysIPV6_MULTICAST_IF, ssoTypeInterface},
+ ssoMulticastHopLimit: {ianaProtocolIPv6, sysIPV6_MULTICAST_HOPS, ssoTypeInt},
+ ssoMulticastLoopback: {ianaProtocolIPv6, sysIPV6_MULTICAST_LOOP, ssoTypeInt},
+ ssoReceiveTrafficClass: {ianaProtocolIPv6, sysIPV6_RECVTCLASS, ssoTypeInt},
+ ssoReceiveHopLimit: {ianaProtocolIPv6, sysIPV6_RECVHOPLIMIT, ssoTypeInt},
+ ssoReceivePacketInfo: {ianaProtocolIPv6, sysIPV6_RECVPKTINFO, ssoTypeInt},
+ ssoReceivePathMTU: {ianaProtocolIPv6, sysIPV6_RECVPATHMTU, ssoTypeInt},
+ ssoPathMTU: {ianaProtocolIPv6, sysIPV6_PATHMTU, ssoTypeMTUInfo},
+ ssoChecksum: {ianaProtocolIPv6, sysIPV6_CHECKSUM, ssoTypeInt},
+ ssoICMPFilter: {ianaProtocolIPv6ICMP, sysICMP6_FILTER, ssoTypeICMPFilter},
+ ssoJoinGroup: {ianaProtocolIPv6, sysIPV6_JOIN_GROUP, ssoTypeIPMreq},
+ ssoLeaveGroup: {ianaProtocolIPv6, sysIPV6_LEAVE_GROUP, ssoTypeIPMreq},
+ }
)
-func setSockaddr(sa *syscall.RawSockaddrInet6, ip net.IP, ifindex int) {
- sa.Len = syscall.SizeofSockaddrInet6
+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(ifindex)
+ 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)
}
