--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/devices/wifi/qos-utils.cc	Fri Apr 24 09:16:28 2009 +0200
@@ -0,0 +1,72 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2009 MIRKO BANCHI
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as 
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Mirko Banchi <mk.banchi@gmail.com>
+ */
+#include "qos-utils.h"
+#include "qos-tag.h"
+
+namespace ns3 {
+
+AccessClass
+QosUtilsMapTidToAc (uint8_t tid)
+{
+  switch (tid) {
+  case 0 :
+    return AC_BE;
+    break;
+  case 1 :
+    return AC_BK;
+    break;
+  case 2 :
+    return AC_BK;
+    break;
+  case 3 :
+    return AC_BE;
+    break;
+  case 4 :
+    return AC_VI;
+    break;
+  case 5 :
+    return AC_VI;
+    break;
+  case 6 :
+    return AC_VO;
+    break;
+  case 7 : 
+    return AC_VO;
+    break;
+  }
+  return AC_UNDEF;
+}
+
+uint8_t
+QosUtilsGetTidForPacket (Ptr<const Packet> packet)
+{
+  QosTag qos;
+  uint8_t tid = 8;
+  if (packet->FindFirstMatchingTag (qos))
+    {
+      if (qos.Get () < 8)
+        {
+          tid = qos.Get ();
+        }
+    }
+  return tid;
+}
+
+} //namespace ns3