mpdu-aggregator.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013
 *
 * 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: Ghada Badawy <gbadawy@gmail.com>
 */

#ifndef MPDU_AGGREGATOR_H
#define MPDU_AGGREGATOR_H

#include "ns3/object.h"
#include "wifi-mode.h"
#include "qos-txop.h"
#include "ns3/nstime.h"
#include <vector>

namespace ns3 {

class AmpduSubframeHeader;
class WifiTxVector;
class Packet;
class WifiMacQueueItem;

class MpduAggregator : public Object
{
public:
  typedef std::map<AcIndex, Ptr<QosTxop> > EdcaQueues;


  static TypeId GetTypeId (void);

  MpduAggregator ();
  virtual ~MpduAggregator ();

  static void Aggregate (Ptr<const WifiMacQueueItem> mpdu, Ptr<Packet> ampdu, bool isSingle);

  static uint32_t GetSizeIfAggregated (uint32_t mpduSize, uint32_t ampduSize);

  uint32_t GetMaxAmpduSize (Mac48Address recipient, uint8_t tid,
                            WifiModulationClass modulation) const;

  std::vector<Ptr<WifiMacQueueItem>> GetNextAmpdu (Ptr<const WifiMacQueueItem> mpdu,
                                                   WifiTxVector txVector,
                                                   Time ppduDurationLimit = Time::Min ()) const;

  void SetEdcaQueues (EdcaQueues edcaQueues);

  static uint8_t CalculatePadding (uint32_t ampduSize);

  static AmpduSubframeHeader GetAmpduSubframeHeader (uint16_t mpduSize, bool isSingle);

private:
  EdcaQueues m_edca;   
};

}  //namespace ns3

#endif /* MPDU_AGGREGATOR_H */