inet::ieee80211::MsduDeaggregation Class Reference

#include <MsduDeaggregation.h>

Inheritance diagram for inet::ieee80211::MsduDeaggregation:

Public Member Functions
virtual std::vector< Ieee80211DataFrame * > *	deaggregateFrame (Ieee80211DataFrame *frame) override
Public Member Functions inherited from inet::ieee80211::IMsduDeaggregation
virtual	~IMsduDeaggregation ()

Protected Member Functions
virtual void	setExplodedFrameAddress (Ieee80211DataFrame *frame, Ieee80211MsduSubframe *subframe, Ieee80211DataFrame *aMsduFrame)

Member Function Documentation

std::vector< Ieee80211DataFrame * > * inet::ieee80211::MsduDeaggregation::deaggregateFrame ( Ieee80211DataFrame *  frame )

overridevirtual

Implements inet::ieee80211::IMsduDeaggregation.

{
    std::vector<Ieee80211DataFrame *> *frames = new std::vector<Ieee80211DataFrame *>();
    Ieee80211AMsdu *aMsdu = check_and_cast<Ieee80211AMsdu *>(frame->getEncapsulatedPacket());
    int tid = frame->getTid();
    int numOfSubframes = aMsdu->getSubframesArraySize();
    for (int i = 0; i < numOfSubframes; i++)
    {
        Ieee80211MsduSubframe msduSubframe = aMsdu->getSubframes(i);
        cPacket *msdu = msduSubframe.decapsulate();
        Ieee80211DataFrame *dataFrame = nullptr;
        // TODO: review, restore snap header, see Ieee80211MsduSubframe
        dataFrame = (msduSubframe.getEtherType() != -1) ? new Ieee80211DataFrameWithSNAP(msduSubframe.getName()) : new Ieee80211DataFrame(msduSubframe.getName());
        dataFrame->setType(ST_DATA_WITH_QOS);
        dataFrame->addBitLength(QOSCONTROL_BITS);
        dataFrame->setTransmitterAddress(msduSubframe.getSa());
        dataFrame->setToDS(frame->getToDS());
        dataFrame->setFromDS(frame->getFromDS());
        dataFrame->setTid(tid);
        // TODO: review, restore snap header, see Ieee80211MsduSubframe
        if (auto dataFrameWithSnap = dynamic_cast<Ieee80211DataFrameWithSNAP*>(dataFrame))
            dataFrameWithSnap->setEtherType(msduSubframe.getEtherType());
        dataFrame->encapsulate(msdu);
        setExplodedFrameAddress(dataFrame, &msduSubframe, frame);
        frames->push_back(dataFrame);
    }
    delete frame;
    return frames;
}

void inet::ieee80211::MsduDeaggregation::setExplodedFrameAddress ( Ieee80211DataFrame *  frame, Ieee80211MsduSubframe *  subframe, Ieee80211DataFrame *  aMsduFrame  )

protectedvirtual

Referenced by deaggregateFrame().

{
    bool toDS = aMsduFrame->getToDS();
    bool fromDS = aMsduFrame->getFromDS();
    if (fromDS == 0 && toDS == 0) // STA to STA
    {
        frame->setTransmitterAddress(aMsduFrame->getTransmitterAddress());
        frame->setReceiverAddress(aMsduFrame->getReceiverAddress());
    }
    else if (fromDS == 1 && toDS == 0) // AP to STA
    {
        frame->setTransmitterAddress(frame->getTransmitterAddress());
        frame->setReceiverAddress(subframe->getDa());
        frame->setAddress3(subframe->getSa());
    }
    else if (fromDS == 0 && toDS == 1) // STA to AP
    {
        frame->setTransmitterAddress(subframe->getSa());
        frame->setReceiverAddress(aMsduFrame->getReceiverAddress());
        frame->setAddress3(subframe->getDa());
    }
    else if (fromDS == 1 && toDS == 1) // AP to AP
    {
        frame->setReceiverAddress(aMsduFrame->getReceiverAddress());
        frame->setTransmitterAddress(aMsduFrame->getTransmitterAddress());
        frame->setAddress3(subframe->getDa());
        frame->setAddress4(subframe->getSa());
    }
}

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The documentation for this class was generated from the following files:

• MsduDeaggregation.h
• MsduDeaggregation.cc