From 72e8f65b8a304c183b668f5dd27be52ec502569c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Deronne?= <sebastien.deronne@gmail.com>
Date: Sun, 17 May 2015 12:50:59 +0200
Subject: [PATCH] remove tracing information about aggregate queue flushing
 when aggregate queue is empty

---
 src/wifi/model/mac-low.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/wifi/model/mac-low.cc b/src/wifi/model/mac-low.cc
index 79e8c4ea0..2df755edc 100644
--- a/src/wifi/model/mac-low.cc
+++ b/src/wifi/model/mac-low.cc
@@ -2847,8 +2847,11 @@ MacLow::AggregateToAmpdu (Ptr<const Packet> packet, const WifiMacHeader hdr)
 void
 MacLow::FlushAggregateQueue (void)
 {
-  NS_LOG_DEBUG("Flush aggregate queue");
-  m_aggregateQueue->Flush ();
+  if (m_aggregateQueue->GetSize () > 0)
+  {
+    NS_LOG_DEBUG("Flush aggregate queue");
+    m_aggregateQueue->Flush ();
+  }
   m_txPackets.clear ();
 }