1 files changed, 42 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/ipv4/sockopt_asmreqn_unix.go b/vendor/golang.org/x/net/ipv4/sockopt_asmreqn_unix.go
new file mode 100644
index 000000000..9d4069ff5
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sockopt_asmreqn_unix.go
@@ -0,0 +1,42 @@
+// Copyright 2014 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 freebsd linux
+
+package ipv4
+
+import (
+	"net"
+	"os"
+	"unsafe"
+
+	"golang.org/x/net/internal/iana"
+)
+
+func getsockoptIPMreqn(s uintptr, name int) (*net.Interface, error) {
+	var mreqn sysIPMreqn
+	l := uint32(sysSizeofIPMreqn)
+	if err := getsockopt(s, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), &l); err != nil {
+		return nil, os.NewSyscallError("getsockopt", err)
+	}
+	if mreqn.Ifindex == 0 {
+		return nil, nil
+	}
+	ifi, err := net.InterfaceByIndex(int(mreqn.Ifindex))
+	if err != nil {
+		return nil, err
+	}
+	return ifi, nil
+}
+
+func setsockoptIPMreqn(s uintptr, name int, ifi *net.Interface, grp net.IP) error {
+	var mreqn sysIPMreqn
+	if ifi != nil {
+		mreqn.Ifindex = int32(ifi.Index)
+	}
+	if grp != nil {
+		mreqn.Multiaddr = [4]byte{grp[0], grp[1], grp[2], grp[3]}
+	}
+	return os.NewSyscallError("setsockopt", setsockopt(s, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), sysSizeofIPMreqn))
+}