point-to-point-channel.h

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/*
 * Copyright (c) 2007 University of Washington
 *
 * 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 POINT_TO_POINT_CHANNEL_H
#define POINT_TO_POINT_CHANNEL_H
 
#include "ns3/channel.h"
#include "ns3/data-rate.h"
#include "ns3/nstime.h"
#include "ns3/ptr.h"
#include "ns3/traced-callback.h"
 
#include <list>
 
namespace ns3
{
 
class PointToPointNetDevice;
class Packet;
 
class PointToPointChannel : public Channel
{
  public:
    static TypeId GetTypeId();
 
    PointToPointChannel();
 
    void Attach(Ptr<PointToPointNetDevice> device);
 
    virtual bool TransmitStart(Ptr<const Packet> p, Ptr<PointToPointNetDevice> src, Time txTime);
 
    std::size_t GetNDevices() const override;
 
    Ptr<PointToPointNetDevice> GetPointToPointDevice(std::size_t i) const;
 
    Ptr<NetDevice> GetDevice(std::size_t i) const override;
 
  protected:
    Time GetDelay() const;
 
    bool IsInitialized() const;
 
    Ptr<PointToPointNetDevice> GetSource(uint32_t i) const;
 
    Ptr<PointToPointNetDevice> GetDestination(uint32_t i) const;
 
    typedef void (*TxRxAnimationCallback)(Ptr<const Packet> packet,
                                          Ptr<NetDevice> txDevice,
                                          Ptr<NetDevice> rxDevice,
                                          Time duration,
                                          Time lastBitTime);
 
  private:
    static const std::size_t N_DEVICES = 2;
 
    Time m_delay;           
    std::size_t m_nDevices; 
 
    TracedCallback<Ptr<const Packet>, // Packet being transmitted
                   Ptr<NetDevice>,    // Transmitting NetDevice
                   Ptr<NetDevice>,    // Receiving NetDevice
                   Time,              // Amount of time to transmit the pkt
                   Time               // Last bit receive time (relative to now)
                   >
        m_txrxPointToPoint;
 
    enum WireState
    {
        INITIALIZING,
        IDLE,
        TRANSMITTING,
        PROPAGATING
    };
 
    class Link
    {
      public:
        Link()
            : m_state(INITIALIZING),
              m_src(nullptr),
              m_dst(nullptr)
        {
        }
 
        WireState m_state;                
        Ptr<PointToPointNetDevice> m_src; 
        Ptr<PointToPointNetDevice> m_dst; 
    };
 
    Link m_link[N_DEVICES]; 
};
 
} // namespace ns3
 
#endif /* POINT_TO_POINT_CHANNEL_H */