originator-block-ack-agreement.h

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/*
 * 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 WifiMpdu;
 
class OriginatorBlockAckAgreement : public BlockAckAgreement
{
    friend class BlockAckManager;
    friend class ::OriginatorBlockAckWindowTest;
 
  public:
    OriginatorBlockAckAgreement(Mac48Address recipient, uint8_t tid);
    ~OriginatorBlockAckAgreement() override;
 
    enum State
    {
        PENDING,
        ESTABLISHED,
        NO_REPLY,
        RESET,
        REJECTED
    };
 
    void SetState(State state);
    bool IsPending() const;
    bool IsEstablished() const;
    bool IsNoReply() const;
    bool IsReset() const;
    bool IsRejected() const;
 
    uint16_t GetStartingSequence() const override;
 
    std::size_t GetDistance(uint16_t seqNumber) const;
 
    void InitTxWindow();
 
    void NotifyTransmittedMpdu(Ptr<const WifiMpdu> mpdu);
    void NotifyAckedMpdu(Ptr<const WifiMpdu> mpdu);
    void NotifyDiscardedMpdu(Ptr<const WifiMpdu> mpdu);
 
  private:
    void AdvanceTxWindow();
 
    State m_state;             
    BlockAckWindow m_txWindow; 
};
 
} // namespace ns3
 
#endif /* ORIGINATOR_BLOCK_ACK_AGREEMENT_H */