Hulk did something

[bytom/vapor.git] / vendor / golang.org / x / net / ipv6 / control_rfc3542_unix.go

diff --git a/vendor/golang.org/x/net/ipv6/control_rfc3542_unix.go b/vendor/golang.org/x/net/ipv6/control_rfc3542_unix.go
new file mode 100644 (file)
index 0000000..eec529c
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/control_rfc3542_unix.go
@@ -0,0 +1,94 @@
+// 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.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package ipv6
+
+import (
+       "net"
+       "unsafe"
+
+       "golang.org/x/net/internal/iana"
+       "golang.org/x/net/internal/socket"
+)
+
+func marshalTrafficClass(b []byte, cm *ControlMessage) []byte {
+       m := socket.ControlMessage(b)
+       m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_TCLASS, 4)
+       if cm != nil {
+               socket.NativeEndian.PutUint32(m.Data(4), uint32(cm.TrafficClass))
+       }
+       return m.Next(4)
+}
+
+func parseTrafficClass(cm *ControlMessage, b []byte) {
+       cm.TrafficClass = int(socket.NativeEndian.Uint32(b[:4]))
+}
+
+func marshalHopLimit(b []byte, cm *ControlMessage) []byte {
+       m := socket.ControlMessage(b)
+       m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_HOPLIMIT, 4)
+       if cm != nil {
+               socket.NativeEndian.PutUint32(m.Data(4), uint32(cm.HopLimit))
+       }
+       return m.Next(4)
+}
+
+func parseHopLimit(cm *ControlMessage, b []byte) {
+       cm.HopLimit = int(socket.NativeEndian.Uint32(b[:4]))
+}
+
+func marshalPacketInfo(b []byte, cm *ControlMessage) []byte {
+       m := socket.ControlMessage(b)
+       m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_PKTINFO, sizeofInet6Pktinfo)
+       if cm != nil {
+               pi := (*inet6Pktinfo)(unsafe.Pointer(&m.Data(sizeofInet6Pktinfo)[0]))
+               if ip := cm.Src.To16(); ip != nil && ip.To4() == nil {
+                       copy(pi.Addr[:], ip)
+               }
+               if cm.IfIndex > 0 {
+                       pi.setIfindex(cm.IfIndex)
+               }
+       }
+       return m.Next(sizeofInet6Pktinfo)
+}
+
+func parsePacketInfo(cm *ControlMessage, b []byte) {
+       pi := (*inet6Pktinfo)(unsafe.Pointer(&b[0]))
+       if len(cm.Dst) < net.IPv6len {
+               cm.Dst = make(net.IP, net.IPv6len)
+       }
+       copy(cm.Dst, pi.Addr[:])
+       cm.IfIndex = int(pi.Ifindex)
+}
+
+func marshalNextHop(b []byte, cm *ControlMessage) []byte {
+       m := socket.ControlMessage(b)
+       m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_NEXTHOP, sizeofSockaddrInet6)
+       if cm != nil {
+               sa := (*sockaddrInet6)(unsafe.Pointer(&m.Data(sizeofSockaddrInet6)[0]))
+               sa.setSockaddr(cm.NextHop, cm.IfIndex)
+       }
+       return m.Next(sizeofSockaddrInet6)
+}
+
+func parseNextHop(cm *ControlMessage, b []byte) {
+}
+
+func marshalPathMTU(b []byte, cm *ControlMessage) []byte {
+       m := socket.ControlMessage(b)
+       m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_PATHMTU, sizeofIPv6Mtuinfo)
+       return m.Next(sizeofIPv6Mtuinfo)
+}
+
+func parsePathMTU(cm *ControlMessage, b []byte) {
+       mi := (*ipv6Mtuinfo)(unsafe.Pointer(&b[0]))
+       if len(cm.Dst) < net.IPv6len {
+               cm.Dst = make(net.IP, net.IPv6len)
+       }
+       copy(cm.Dst, mi.Addr.Addr[:])
+       cm.IfIndex = int(mi.Addr.Scope_id)
+       cm.MTU = int(mi.Mtu)
+}