tcp-bic.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2014 Natale Patriciello <natale.patriciello@gmail.com>
 *
 * 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
 *
 */

#ifndef TCPBIC_H
#define TCPBIC_H

#include "ns3/tcp-congestion-ops.h"
#include "ns3/traced-value.h"

namespace ns3 {

class TcpBic : public TcpCongestionOps
{
public:
  static TypeId GetTypeId (void);

  TcpBic ();

  TcpBic (const TcpBic &sock);

  virtual std::string GetName () const;
  virtual void IncreaseWindow (Ptr<TcpSocketState> tcb,
                               uint32_t segmentsAcked);
  virtual uint32_t GetSsThresh (Ptr<const TcpSocketState> tcb,
                                uint32_t bytesInFlight);

  virtual Ptr<TcpCongestionOps> Fork ();

protected:
  virtual uint32_t Update (Ptr<TcpSocketState> tcb);

private:
  friend class TcpBicIncrementTest;
  friend class TcpBicDecrementTest;

  // User parameters
  bool     m_fastConvergence;  
  double   m_beta;             
  uint32_t m_maxIncr;          
  uint32_t m_lowWnd;           
  int      m_smoothPart;       

  // Bic parameters
  uint32_t     m_cWndCnt;         
  uint32_t     m_lastMaxCwnd;     
  uint32_t     m_lastCwnd;        
  Time         m_epochStart;      
  uint8_t      m_b;               
};

} // namespace ns3
#endif // TCPBIC_H