inet::ieee80211::OriginatorProtectionMechanism Class Reference

#include <OriginatorProtectionMechanism.h>

Inheritance diagram for inet::ieee80211::OriginatorProtectionMechanism:

Public Member Functions
virtual	~OriginatorProtectionMechanism ()
virtual simtime_t	computeDurationField (Packet *packet, const Ptr< const Ieee80211MacHeader > &header, Packet *pendingPacket, const Ptr< const Ieee80211DataOrMgmtHeader > &pendingHeader)

Protected Member Functions
virtual int	numInitStages () const override
virtual void	initialize (int stage) override
virtual simtime_t	computeRtsDurationField (Packet *rtsPacket, const Ptr< const Ieee80211RtsFrame > &rtsFrame, Packet *pendingPacket, const Ptr< const Ieee80211DataOrMgmtHeader > &pendingHeader)
virtual simtime_t	computeDataFrameDurationField (Packet *dataPacket, const Ptr< const Ieee80211DataHeader > &dataHeader, Packet *pendingPacket, const Ptr< const Ieee80211DataOrMgmtHeader > &pendingHeader)
virtual simtime_t	computeMgmtFrameDurationField (Packet *mgmtPacket, const Ptr< const Ieee80211MgmtHeader > &mgmtHeader, Packet *pendingPacket, const Ptr< const Ieee80211DataOrMgmtHeader > &pendingHeader)
Protected Member Functions inherited from inet::ieee80211::ModeSetListener
virtual void	receiveSignal (cComponent *source, simsignal_t signalID, cObject *obj, cObject *details) override

Protected Attributes
IRateSelection *	rateSelection = nullptr
Protected Attributes inherited from inet::ieee80211::ModeSetListener
physicallayer::Ieee80211ModeSet *	modeSet = nullptr

Constructor & Destructor Documentation

~OriginatorProtectionMechanism()

virtual inet::ieee80211::OriginatorProtectionMechanism::~OriginatorProtectionMechanism ( )

inlinevirtual

{}

Member Function Documentation

computeDataFrameDurationField()

simtime_t inet::ieee80211::OriginatorProtectionMechanism::computeDataFrameDurationField ( Packet *  dataPacket, const Ptr< const Ieee80211DataHeader > &  dataHeader, Packet *  pendingPacket, const Ptr< const Ieee80211DataOrMgmtHeader > &  pendingHeader  )

protectedvirtual

{
    simtime_t ackToDataFrameDuration = rateSelection->computeResponseAckFrameMode(dataPacket, dataHeader)->getDuration(LENGTH_ACK);
    if (dataHeader->getReceiverAddress().isMulticast())
        return 0;
    if (!dataHeader->getMoreFragments())
        return ackToDataFrameDuration + modeSet->getSifsTime();
    else {
        simtime_t pendingFrameDuration = rateSelection->computeMode(pendingPacket, pendingHeader)->getDuration(pendingPacket->getDataLength());
        auto pendingFrameMode = rateSelection->computeMode(pendingPacket, pendingHeader);
        RateSelection::setFrameMode(pendingPacket, pendingHeader, pendingFrameMode);
        simtime_t ackToPendingFrame = pendingFrameMode->getDuration(LENGTH_ACK);
        return pendingFrameDuration + ackToDataFrameDuration + ackToPendingFrame + 3 * modeSet->getSifsTime();
    }
}

Referenced by computeDurationField().

computeDurationField()

simtime_t inet::ieee80211::OriginatorProtectionMechanism::computeDurationField ( Packet *  packet, const Ptr< const Ieee80211MacHeader > &  header, Packet *  pendingPacket, const Ptr< const Ieee80211DataOrMgmtHeader > &  pendingHeader  )

virtual

{
    if (auto rtsFrame = dynamicPtrCast<const Ieee80211RtsFrame>(header))
        return computeRtsDurationField(packet, rtsFrame, pendingPacket, pendingHeader);
    else if (auto dataHeader = dynamicPtrCast<const Ieee80211DataHeader>(header))
        return computeDataFrameDurationField(packet, dataHeader, pendingPacket, pendingHeader);
    else if (auto mgmtHeader = dynamicPtrCast<const Ieee80211MgmtHeader>(header))
        return computeMgmtFrameDurationField(packet, mgmtHeader, pendingPacket, pendingHeader);
    else
        throw cRuntimeError("Unknown frame");
}

computeMgmtFrameDurationField()

simtime_t inet::ieee80211::OriginatorProtectionMechanism::computeMgmtFrameDurationField ( Packet *  mgmtPacket, const Ptr< const Ieee80211MgmtHeader > &  mgmtHeader, Packet *  pendingPacket, const Ptr< const Ieee80211DataOrMgmtHeader > &  pendingHeader  )

protectedvirtual

{
    simtime_t ackFrameDuration = rateSelection->computeResponseAckFrameMode(mgmtPacket, mgmtHeader)->getDuration(LENGTH_ACK);
    if (mgmtHeader->getReceiverAddress().isMulticast())
        return 0;
    if (!mgmtHeader->getMoreFragments()) {
        return ackFrameDuration + modeSet->getSifsTime();
    }
    else {
        simtime_t pendingFrameDuration = rateSelection->computeMode(pendingPacket, pendingHeader)->getDuration(pendingPacket->getDataLength());
        return pendingFrameDuration + 2 * ackFrameDuration + 3 * modeSet->getSifsTime();
    }
}

Referenced by computeDurationField().

computeRtsDurationField()

simtime_t inet::ieee80211::OriginatorProtectionMechanism::computeRtsDurationField ( Packet *  rtsPacket, const Ptr< const Ieee80211RtsFrame > &  rtsFrame, Packet *  pendingPacket, const Ptr< const Ieee80211DataOrMgmtHeader > &  pendingHeader  )

protectedvirtual

{
    auto pendingFrameMode = rateSelection->computeMode(pendingPacket, pendingHeader);
    RateSelection::setFrameMode(pendingPacket, pendingHeader, pendingFrameMode); // KLUDGE
    simtime_t pendingFrameDuration = pendingFrameMode->getDuration(pendingPacket->getDataLength());
    simtime_t ctsFrameDuration = rateSelection->computeResponseCtsFrameMode(rtsPacket, rtsFrame)->getDuration(LENGTH_CTS);
    simtime_t ackFrameDuration = rateSelection->computeResponseAckFrameMode(pendingPacket, pendingHeader)->getDuration(LENGTH_ACK);
    simtime_t durationId = ctsFrameDuration + pendingFrameDuration + ackFrameDuration;
    return durationId + 3 * modeSet->getSifsTime();
}

Referenced by computeDurationField().

initialize()

void inet::ieee80211::OriginatorProtectionMechanism::initialize ( int  stage )

overrideprotectedvirtual

Reimplemented from inet::ieee80211::ModeSetListener.

{
    ModeSetListener::initialize(stage);
    if (stage == INITSTAGE_LOCAL) {
        rateSelection = check_and_cast<IRateSelection *>(getModuleByPath(par("rateSelectionModule")));
    }
}

numInitStages()

virtual int inet::ieee80211::OriginatorProtectionMechanism::numInitStages ( ) const

inlineoverrideprotectedvirtual

Reimplemented from inet::ieee80211::ModeSetListener.

{ return NUM_INIT_STAGES; }

Member Data Documentation

rateSelection

IRateSelection* inet::ieee80211::OriginatorProtectionMechanism::rateSelection = nullptr

protected

Referenced by computeDataFrameDurationField(), computeMgmtFrameDurationField(), computeRtsDurationField(), and initialize().

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

• OriginatorProtectionMechanism.h
• OriginatorProtectionMechanism.cc