From 37db875d66af372ea494d58958b5b137cfee1bcb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Deronne?= <sebastien.deronne@gmail.com>
Date: Wed, 14 Dec 2016 17:53:02 +0100
Subject: [PATCH] wifi: Add assert in GetTid

---
 src/wifi/model/qos-utils.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/wifi/model/qos-utils.cc b/src/wifi/model/qos-utils.cc
index e95aefac4..99eb42edd 100644
--- a/src/wifi/model/qos-utils.cc
+++ b/src/wifi/model/qos-utils.cc
@@ -96,6 +96,7 @@ QosUtilsIsOldPacket (uint16_t startingSeq, uint16_t seqNumber)
 uint8_t
 GetTid (Ptr<const Packet> packet, const WifiMacHeader hdr)
 {
+  NS_ASSERT (hdr.IsQosData () || packet != 0);
   if (hdr.IsQosData ())
     {
       return hdr.GetQosTid ();