wifi-acknowledgment.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2020 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
 *
 * Author: Stefano Avallone <stavallo@unina.it>
 */

#ifndef WIFI_ACKNOWLEDGMENT_H
#define WIFI_ACKNOWLEDGMENT_H

#include "ns3/nstime.h"
#include "wifi-tx-vector.h"
#include "block-ack-type.h"
#include "wifi-mac-header.h"
#include "ctrl-headers.h"
#include <map>


namespace ns3 {

class Mac48Address;

struct WifiAcknowledgment
{
  enum Method
    {
      NONE = 0,
      NORMAL_ACK,
      BLOCK_ACK,
      BAR_BLOCK_ACK,
      DL_MU_BAR_BA_SEQUENCE,
      DL_MU_TF_MU_BAR,
      DL_MU_AGGREGATE_TF
    };

  WifiAcknowledgment (Method m);
  virtual ~WifiAcknowledgment ();

  WifiMacHeader::QosAckPolicy GetQosAckPolicy (Mac48Address receiver, uint8_t tid) const;

  void SetQosAckPolicy (Mac48Address receiver, uint8_t tid, WifiMacHeader::QosAckPolicy ackPolicy);

  virtual void Print (std::ostream &os) const = 0;

  const Method method;       
  Time acknowledgmentTime;   

private:
  virtual bool CheckQosAckPolicy (Mac48Address receiver, uint8_t tid,
                                  WifiMacHeader::QosAckPolicy ackPolicy) const = 0;

  std::map<std::pair<Mac48Address, uint8_t>, WifiMacHeader::QosAckPolicy> m_ackPolicy;
};


struct WifiNoAck : public WifiAcknowledgment
{
  WifiNoAck ();

  // Overridden from WifiAcknowledgment
  bool CheckQosAckPolicy (Mac48Address receiver, uint8_t tid, WifiMacHeader::QosAckPolicy ackPolicy) const override;
  void Print (std::ostream &os) const override;
};


struct WifiNormalAck : public WifiAcknowledgment
{
  WifiNormalAck ();

  // Overridden from WifiAcknowledgment
  bool CheckQosAckPolicy (Mac48Address receiver, uint8_t tid, WifiMacHeader::QosAckPolicy ackPolicy) const override;
  void Print (std::ostream &os) const override;

  WifiTxVector ackTxVector;       
};


struct WifiBlockAck : public WifiAcknowledgment
{
  WifiBlockAck ();

  // Overridden from WifiAcknowledgment
  bool CheckQosAckPolicy (Mac48Address receiver, uint8_t tid, WifiMacHeader::QosAckPolicy ackPolicy) const;
  void Print (std::ostream &os) const;

  WifiTxVector blockAckTxVector;       
  BlockAckType baType;                 
};


struct WifiBarBlockAck : public WifiAcknowledgment
{
  WifiBarBlockAck ();

  // Overridden from WifiAcknowledgment
  bool CheckQosAckPolicy (Mac48Address receiver, uint8_t tid, WifiMacHeader::QosAckPolicy ackPolicy) const;
  void Print (std::ostream &os) const;

  WifiTxVector blockAckReqTxVector;    
  WifiTxVector blockAckTxVector;       
  BlockAckReqType barType;             
  BlockAckType baType;                 
};


struct WifiDlMuBarBaSequence : public WifiAcknowledgment
{
  WifiDlMuBarBaSequence ();

  // Overridden from WifiAcknowledgment
  bool CheckQosAckPolicy (Mac48Address receiver, uint8_t tid, WifiMacHeader::QosAckPolicy ackPolicy) const override;
  void Print (std::ostream &os) const override;

  struct AckInfo
  {
    WifiTxVector ackTxVector;          
  };
  struct BlockAckInfo
  {
    WifiTxVector blockAckTxVector;     
    BlockAckType baType;               
  };
  struct BlockAckReqInfo
  {
    WifiTxVector blockAckReqTxVector;  
    BlockAckReqType barType;           
    WifiTxVector blockAckTxVector;     
    BlockAckType baType;               
  };

  std::map<Mac48Address, AckInfo> stationsReplyingWithNormalAck;
  std::map<Mac48Address, BlockAckInfo> stationsReplyingWithBlockAck;
  std::map<Mac48Address, BlockAckReqInfo> stationsSendBlockAckReqTo;
};


struct WifiDlMuTfMuBar : public WifiAcknowledgment
{
  WifiDlMuTfMuBar ();

  // Overridden from WifiAcknowledgment
  bool CheckQosAckPolicy (Mac48Address receiver, uint8_t tid, WifiMacHeader::QosAckPolicy ackPolicy) const override;
  void Print (std::ostream &os) const override;

  struct BlockAckInfo
  {
    CtrlBAckRequestHeader barHeader;   
    WifiTxVector blockAckTxVector;     
    BlockAckType baType;               
  };

  std::map<Mac48Address, BlockAckInfo> stationsReplyingWithBlockAck;
  std::list<BlockAckReqType> barTypes; 
  uint16_t ulLength;                   
  WifiTxVector muBarTxVector;          
};


struct WifiDlMuAggregateTf : public WifiAcknowledgment
{
  WifiDlMuAggregateTf ();

  // Overridden from WifiAcknowledgment
  bool CheckQosAckPolicy (Mac48Address receiver, uint8_t tid, WifiMacHeader::QosAckPolicy ackPolicy) const override;
  void Print (std::ostream &os) const override;

  struct BlockAckInfo
  {
    uint32_t muBarSize;                
    CtrlBAckRequestHeader barHeader;   
    WifiTxVector blockAckTxVector;     
    BlockAckType baType;               
  };

  std::map<Mac48Address, BlockAckInfo> stationsReplyingWithBlockAck;
  uint16_t ulLength;                   
};


std::ostream& operator<< (std::ostream& os, const WifiAcknowledgment* acknowledgment);

} //namespace ns3

#endif /* WIFI_ACKNOWLEDGMENT_H */