csma-channel.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2007 Emmanuelle Laprise
 *
 * 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: Emmanuelle Laprise<emmanuelle.laprise@bluekazoo.ca>
 */
 
#ifndef CSMA_CHANNEL_H
#define CSMA_CHANNEL_H
 
#include "ns3/channel.h"
#include "ns3/ptr.h"
#include "ns3/nstime.h"
#include "ns3/data-rate.h"
 
namespace ns3 {
 
class Packet;
 
class CsmaNetDevice;
 
class CsmaDeviceRec {
public:
  Ptr< CsmaNetDevice > devicePtr; 
  bool                 active;    
 
  CsmaDeviceRec();
 
  CsmaDeviceRec(Ptr< CsmaNetDevice > device);
 
  CsmaDeviceRec (CsmaDeviceRec const &o);
 
  bool IsActive ();
};
 
enum WireState
{
  IDLE,            
  TRANSMITTING,    
  PROPAGATING      
};
 
class CsmaChannel : public Channel 
{
public:
 
  static TypeId GetTypeId (void);
 
  CsmaChannel ();
  virtual ~CsmaChannel ();
 
  int32_t Attach (Ptr<CsmaNetDevice> device);
 
  bool Detach (Ptr<CsmaNetDevice> device);
 
  bool Detach (uint32_t deviceId);
 
  bool Reattach (uint32_t deviceId);
 
  bool Reattach (Ptr<CsmaNetDevice> device);
 
  bool TransmitStart (Ptr<const Packet> p, uint32_t srcId);
 
  bool TransmitEnd ();
 
  void PropagationCompleteEvent ();
 
  int32_t GetDeviceNum (Ptr<CsmaNetDevice> device);
 
  WireState GetState ();
 
  bool IsBusy ();
 
  bool IsActive (uint32_t deviceId);
 
  uint32_t GetNumActDevices (void);
 
  virtual std::size_t GetNDevices (void) const;
 
  virtual Ptr<NetDevice> GetDevice (std::size_t i) const;
 
  Ptr<CsmaNetDevice> GetCsmaDevice (std::size_t i) const;
 
  DataRate GetDataRate (void);
 
  Time GetDelay (void);
 
private:
  CsmaChannel (CsmaChannel const &o);
 
  CsmaChannel &operator = (CsmaChannel const &o);
 
  DataRate      m_bps;
 
  Time          m_delay;
 
  std::vector<CsmaDeviceRec> m_deviceList;
 
  Ptr<Packet> m_currentPkt;
 
  uint32_t                            m_currentSrc;
 
  WireState          m_state;
};
 
} // namespace ns3
 
#endif /* CSMA_CHANNEL_H */