TxControlPolicyTCPTahoe.h

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//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// 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 Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public License
// along with this program.  If not, see http://www.gnu.org/licenses/.
// 
#ifndef TXCONTROLPOLICYTCPTAHOE_H_
#define TXCONTROLPOLICYTCPTAHOE_H_

#include <omnetpp.h>

#include "TxControlPolicyBase.h"
#include "SenderAckPolicyTCP.h"
#include "DTPState.h"
#include "DTCPState.h"

#define MAX_SSTHRESH    1000000000      
#define RST_WND         1               
#define INL_WND         3               
#define SMSS            1500            

//state
#define STATE_STARTING_SLOW_START       0           
#define STATE_SLOW_START                1           
#define STATE_CNG_AVOID                 2           

class TxControlPolicyTCPTahoe : public TxControlPolicyBase {
public:
    float snd_cwnd;            
    float ssthresh;            

    uint32_t state;
    uint32_t rxSent;
    uint32_t ackRcvd;
    uint32_t packetSize;
    uint32_t flightSize;

    bool slowedDown;

    TxControlPolicyTCPTahoe();
    virtual ~TxControlPolicyTCPTahoe();

    virtual bool run(DTPState* dtpState, DTCPState* dtcpState);

    void slowDown();
protected:
    SenderAckPolicyTCP *ackPolicy;

    //Statistic signals
    simsignal_t sigStatTCPTahoeCWND;
    using TxControlPolicyBase::initialize;
    virtual void initialize(int step);
};

#endif /* TXCONTROLPOLICYTCPTAHOE_H_ */