tbf-queue-disc.h

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/*
 * Copyright (c) 2017 Kungliga Tekniska Högskolan
 *               2017 Universita' degli Studi di Napoli Federico II
 *
 * 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
 *
 * TBF, The Token Bucket Filter Queueing discipline
 *
 * This implementation is based on linux kernel code by
 * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 *              Dmitry Torokhov <dtor@mail.ru> - allow attaching inner qdiscs -
 *                                               original idea by Martin Devera
 *
 * Implemented in ns-3 by: Surya Seetharaman <suryaseetharaman.9@gmail.com>
 *                         Stefano Avallone <stavallo@unina.it>
 */
#ifndef TBF_QUEUE_DISC_H
#define TBF_QUEUE_DISC_H
 
#include "ns3/boolean.h"
#include "ns3/data-rate.h"
#include "ns3/event-id.h"
#include "ns3/nstime.h"
#include "ns3/queue-disc.h"
#include "ns3/random-variable-stream.h"
#include "ns3/trace-source-accessor.h"
#include "ns3/traced-value.h"
 
namespace ns3
{
 
class TbfQueueDisc : public QueueDisc
{
  public:
    static TypeId GetTypeId();
 
    TbfQueueDisc();
 
    ~TbfQueueDisc() override;
 
    void SetBurst(uint32_t burst);
 
    uint32_t GetBurst() const;
 
    void SetMtu(uint32_t mtu);
 
    uint32_t GetMtu() const;
 
    void SetRate(DataRate rate);
 
    DataRate GetRate() const;
 
    void SetPeakRate(DataRate peakRate);
 
    DataRate GetPeakRate() const;
 
    uint32_t GetFirstBucketTokens() const;
 
    uint32_t GetSecondBucketTokens() const;
 
  protected:
    void DoDispose() override;
 
  private:
    bool DoEnqueue(Ptr<QueueDiscItem> item) override;
    Ptr<QueueDiscItem> DoDequeue() override;
    bool CheckConfig() override;
    void InitializeParams() override;
 
    /* parameters for the TBF Queue Disc */
    uint32_t m_burst;    
    uint32_t m_mtu;      
    DataRate m_rate;     
    DataRate m_peakRate; 
 
    /* variables stored by TBF Queue Disc */
    TracedValue<uint32_t> m_btokens; 
    TracedValue<uint32_t> m_ptokens; 
    Time m_timeCheckPoint;           
    EventId m_id; 
};
 
} // namespace ns3
 
#endif /* TBF_QUEUE_DISC_H */