originator-block-ack-agreement.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2009, 2010 MIRKO BANCHI
 *
 * 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: Mirko Banchi <mk.banchi@gmail.com>
 * Author: Tommaso Pecorella <tommaso.pecorella@unifi.it>
 */
#ifndef ORIGINATOR_BLOCK_ACK_AGREEMENT_H
#define ORIGINATOR_BLOCK_ACK_AGREEMENT_H
 
#include "block-ack-agreement.h"
#include "block-ack-window.h"
 
class OriginatorBlockAckWindowTest;
 
namespace ns3 {
 
class WifiMacQueueItem;
 
class OriginatorBlockAckAgreement : public BlockAckAgreement
{
  friend class BlockAckManager;
  friend class ::OriginatorBlockAckWindowTest;
 
 
public:
  OriginatorBlockAckAgreement (Mac48Address recipient, uint8_t tid);
  ~OriginatorBlockAckAgreement ();
  enum State
  {
    PENDING,
    ESTABLISHED,
    NO_REPLY,
    RESET,
    REJECTED
  };
  void SetState (State state);
  bool IsPending (void) const;
  bool IsEstablished (void) const;
  bool IsNoReply (void) const;
  bool IsReset (void) const;
  bool IsRejected (void) const;
 
  uint16_t GetStartingSequence (void) const override;
 
  std::size_t GetDistance (uint16_t seqNumber) const;
 
  void InitTxWindow (void);
 
  void NotifyTransmittedMpdu (Ptr<const WifiMacQueueItem> mpdu);
  void NotifyAckedMpdu (Ptr<const WifiMacQueueItem> mpdu);
  void NotifyDiscardedMpdu (Ptr<const WifiMacQueueItem> mpdu);
 
 
private:
  void AdvanceTxWindow (void);
 
  State m_state;                 
  BlockAckWindow m_txWindow;     
};
 
} //namespace ns3
 
#endif /* ORIGINATOR_BLOCK_ACK_AGREEMENT_H */