go.net/ipv6: new package
Package ipv6 implements IP-level socket options for the Internet
Protocol version 6. It also provides datagram based network I/O
methods specific to the IPv6 and higher layer protocols.
Fixes golang/go#5538.
R=dave
CC=golang-dev
https://golang.org/cl/9843044
diff --git a/ipv6/sockopt_rfc3542_bsd.go b/ipv6/sockopt_rfc3542_bsd.go
new file mode 100644
index 0000000..61073b1
--- /dev/null
+++ b/ipv6/sockopt_rfc3542_bsd.go
@@ -0,0 +1,44 @@
+// 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 freebsd netbsd openbsd
+
+package ipv6
+
+import (
+ "os"
+ "syscall"
+)
+
+func ipv6PathMTU(fd int) (int, error) {
+ v, err := syscall.GetsockoptIPv6MTUInfo(fd, ianaProtocolIPv6, syscall.IPV6_PATHMTU)
+ if err != nil {
+ return 0, os.NewSyscallError("getsockopt", err)
+ }
+ return int(v.Mtu), nil
+}
+
+func ipv6ReceivePathMTU(fd int) (bool, error) {
+ v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, syscall.IPV6_RECVPATHMTU)
+ if err != nil {
+ return false, os.NewSyscallError("getsockopt", err)
+ }
+ return v == 1, nil
+}
+
+func setIPv6ReceivePathMTU(fd int, v bool) error {
+ return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, syscall.IPV6_RECVPATHMTU, boolint(v)))
+}
+
+func ipv6ICMPFilter(fd int) (*ICMPFilter, error) {
+ v, err := syscall.GetsockoptICMPv6Filter(fd, ianaProtocolIPv6ICMP, syscall.ICMP6_FILTER)
+ if err != nil {
+ return nil, os.NewSyscallError("getsockopt", err)
+ }
+ return &ICMPFilter{rawICMPFilter: rawICMPFilter{*v}}, nil
+}
+
+func setIPv6ICMPFilter(fd int, f *ICMPFilter) error {
+ return os.NewSyscallError("setsockopt", syscall.SetsockoptICMPv6Filter(fd, ianaProtocolIPv6ICMP, syscall.ICMP6_FILTER, &f.rawICMPFilter.ICMPv6Filter))
+}
