Add mising license headers.

PiperOrigin-RevId: 194676372
Change-Id: I2e7fce03e70a45f2a872160c33e05f822ae2d866

4 files changed, 13 insertions, 0 deletions

diff --git a/pkg/tcpip/link/rawfile/blockingpoll_amd64.s b/pkg/tcpip/link/rawfile/blockingpoll_amd64.s
index 88206fc87..d6778dafe 100644
--- a/pkg/tcpip/link/rawfile/blockingpoll_amd64.s
+++ b/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
diff --git a/pkg/tcpip/link/rawfile/errors.go b/pkg/tcpip/link/rawfile/errors.go
index b6e7b3d71..ce58ee975 100644
--- a/pkg/tcpip/link/rawfile/errors.go
+++ b/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 (
diff --git a/pkg/tcpip/link/sniffer/pcap.go b/pkg/tcpip/link/sniffer/pcap.go
index 6d0dd565a..732a520dd 100644
--- a/pkg/tcpip/link/sniffer/pcap.go
+++ b/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"
diff --git a/pkg/tcpip/link/tun/tun_unsafe.go b/pkg/tcpip/link/tun/tun_unsafe.go
index 5b6c9b4ab..f2a2ec69e 100644
--- a/pkg/tcpip/link/tun/tun_unsafe.go
+++ b/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 (