/* -*-  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>

 */

#ifndef QOS_UTILS_H

#define QOS_UTILS_H

#include "ns3/uinteger.h"

#include "ns3/ptr.h"

#include "ns3/packet.h"

namespace ns3 {

  AC_BE_NQOS = 4,

  AC_UNDEF

};

/* Maps TID (Traffic ID) to Access classes.

 * For more details see table 9-1 of IEEE802.11 standard.

 */

/* If a qos tag is attached to the packet, returns a value < 8.

   A value >= 8 is returned otherwise.

 */

uint8_t QosUtilsGetTidForPacket (Ptr<const Packet> packet);

/*

 * Next function is useful to correctly sort buffered packets under block ack.

 * When an BAR is received from originator station, completed "old"

 * (see section 9.10.3 in IEEE802.11e) packets must be forwarded up before "new" packets.

 */

uint32_t QosUtilsMapSeqControlToUniqueInteger (uint16_t seqControl, uint16_t endSequence);

} //namespace ns3

#endif /* QOS_UTILS_H */