Add mising license headers.

PiperOrigin-RevId: 194676372
Change-Id: I2e7fce03e70a45f2a872160c33e05f822ae2d866

pkg/gate/gate.go

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack 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 gate provides a usage Gate synchronization primitive.
 package gate
 

pkg/gate/gate_test.go

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack 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 gate_test
 
 import (

pkg/sleep/commit_amd64.s

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 #include "textflag.h"
 
 #define preparingG 1

pkg/sleep/sleep_test.go

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack 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 sleep
 
 import (

pkg/tcpip/header/tcp_test.go

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack 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 header_test
 
 import (

pkg/tcpip/link/rawfile/blockingpoll_amd64.s

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 #include "textflag.h"
 
 // blockingPoll makes the poll() syscall while calling the version of

pkg/tcpip/link/rawfile/errors.go

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack 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 rawfile
 
 import (

pkg/tcpip/link/sniffer/pcap.go

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack 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 sniffer
 
 import "time"

pkg/tcpip/link/tun/tun_unsafe.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// Package tun contains methods to open TAP and TUN devices.
 package tun
 
 import (

pkg/tcpip/ports/ports_test.go

@@ -1,6 +1,7 @@
 // Copyright 2016 The Netstack 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 ports
 
 import (

pkg/tcpip/transport/tcp/sack.go

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack 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 tcp
 
 import (

pkg/tcpip/transport/tcp/tcp_sack_test.go

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack 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 tcp_test
 
 import (

pkg/tcpip/transport/tcp/tcp_timestamp_test.go

@@ -1,3 +1,7 @@
+// Copyright 2016 The Netstack 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 tcp_test
 
 import (