tcp-illinois.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2016 ResiliNets, ITTC, University of Kansas
 *
 * 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: Keerthi Ganta <keerthiganta@ku.edu>
 *         Truc Anh N. Nguyen <annguyen@ittc.ku.edu>
 *
 * James P.G. Sterbenz <jpgs@ittc.ku.edu>, director
 * ResiliNets Research Group  http://wiki.ittc.ku.edu/resilinets
 * Information and Telecommunication Technology Center (ITTC)
 * and Department of Electrical Engineering and Computer Science
 * The University of Kansas Lawrence, KS USA.
 */

#ifndef TCPILLINOIS_H
#define TCPILLINOIS_H

#include "ns3/tcp-congestion-ops.h"
#include "ns3/tcp-recovery-ops.h"

namespace ns3 {

class TcpIllinois : public TcpNewReno
{
public:
  static TypeId GetTypeId (void);

  TcpIllinois (void);

  TcpIllinois (const TcpIllinois& sock);
  virtual ~TcpIllinois (void);

  virtual std::string GetName () const;

  virtual uint32_t GetSsThresh (Ptr<const TcpSocketState> tcb,
                                uint32_t bytesInFlight);

  virtual Ptr<TcpCongestionOps> Fork ();

  virtual void CongestionStateSet (Ptr<TcpSocketState> tcb,
                                   const TcpSocketState::TcpCongState_t newState);

  virtual void IncreaseWindow (Ptr<TcpSocketState> tcb, uint32_t segmentsAcked);

  virtual void PktsAcked (Ptr<TcpSocketState> tcb, uint32_t segmentsAcked,
                          const Time& rtt);

protected:
private:
  void RecalcParam (uint32_t cWnd);

  void CalculateAlpha (double da, double dm);

  void CalculateBeta (double da, double dm);

  Time CalculateAvgDelay () const;

  Time CalculateMaxDelay () const;

  void Reset (const SequenceNumber32 &nextTxSequence);

private:
  Time m_sumRtt;             
  uint32_t m_cntRtt;         
  Time m_baseRtt;            
  Time m_maxRtt;             
  SequenceNumber32 m_endSeq; 
  bool m_rttAbove;           
  uint8_t m_rttLow;          
  double m_alphaMin;         
  double m_alphaMax;         
  double m_alphaBase;        
  double m_alpha;            
  double m_betaMin;          
  double m_betaMax;          
  double m_betaBase;         
  double m_beta;             
  uint32_t m_winThresh;      
  uint32_t m_theta;          
  uint32_t m_ackCnt;         

};

} // namespace ns3

#endif // TCPILLINOIS_H