DSCP Marker. More...

#include <DscpMarker.h>

Inheritance diagram for inet::DscpMarker:

Public Member Functions
	DscpMarker ()

virtual bool	supportsPacketPushing (cGate *gate) const override
	Returns true if the processor supports pushing packets at the given gate. More...

virtual bool	supportsPacketPulling (cGate *gate) const override
	Returns true if the processor supports pulling packets at the given gate. More...

virtual queueing::IPassivePacketSink *	getConsumer (cGate *gate) override
	Returns the passive packet sink where packets are pushed or nullptr if the connected module doesn't implement the interface. More...

virtual bool	canPushSomePacket (cGate *gate) const override
	Returns false if the packet sink is full at the given gate and no more packets can be pushed into it without raising an error. More...

virtual bool	canPushPacket (Packet packet, cGate gate) const override
	Returns true if the given packet can be pushed at the given gate into the packet sink without raising an error. More...

virtual void	pushPacketStart (Packet packet, cGate gate, bps datarate) override
	Starts pushing the packet into the packet sink at the given gate. More...

virtual void	pushPacketEnd (Packet packet, cGate gate) override
	Ends pushing the packet into the packet sink at the given gate. More...

virtual void	pushPacketProgress (Packet packet, cGate gate, bps datarate, b position, b extraProcessableLength=b(0)) override
	Progresses pushing the packet into the packet sink at the given gate. More...

virtual void	handleCanPushPacketChanged (cGate *gate) override
	Notifies about a change in the possibility of pushing some packet into the passive packet sink at the given gate. More...

virtual void	pushPacket (Packet packet, cGate gate) override
	Pushes the packet into the packet sink at the given gate. More...

virtual void	handlePushPacketProcessed (Packet packet, cGate gate, bool successful) override
	Notifies about the completion of the packet processing for a packet that was pushed earlier independently whether the packet is passed or streamed. More...

Public Member Functions inherited from inet::queueing::PacketProcessorBase
virtual bool	supportsPacketSending (cGate *gate) const override
	Returns true if the processor supports sending packets at the given gate. More...

virtual bool	supportsPacketPassing (cGate *gate) const override
	Returns true if the processor supports passing packets as a whole at the given gate. More...

virtual bool	supportsPacketStreaming (cGate *gate) const override
	Returns true if the processor supports streaming packets at the given gate. More...

virtual const char *	resolveDirective (char directive) const override

Public Member Functions inherited from inet::queueing::IPacketProcessor
virtual	~IPacketProcessor ()

Public Member Functions inherited from inet::queueing::IPassivePacketSink
virtual	~IPassivePacketSink ()

Public Member Functions inherited from inet::queueing::IActivePacketSource
virtual	~IActivePacketSource ()

Protected Member Functions
virtual void	initialize (int stage) override

virtual void	handleMessage (cMessage *message) override

virtual void	refreshDisplay () const override

virtual bool	markPacket (Packet *msg, int dscp)

Protected Member Functions inherited from inet::queueing::PacketProcessorBase
virtual int	numInitStages () const override

virtual void	handlePacketProcessed (Packet *packet)

virtual void	checkPacketOperationSupport (cGate *gate) const

virtual void	checkPacketOperationSupport (cGate startGate, cGate endGate) const

virtual void	animate (Packet packet, cGate gate, const SendOptions &sendOptions, Action action) const

virtual void	animatePacket (Packet packet, cGate gate, Action action) const

virtual void	animatePacketStart (Packet packet, cGate gate, bps datarate, long transmissionId, Action action) const

virtual void	animatePacketStart (Packet packet, cGate gate, bps datarate, const SendOptions &sendOptions, Action action) const

virtual void	animatePacketEnd (Packet packet, cGate gate, long transmissionId, Action action) const

virtual void	animatePacketEnd (Packet packet, cGate gate, const SendOptions &sendOptions, Action action) const

virtual void	animatePacketProgress (Packet packet, cGate gate, bps datarate, b position, b extraProcessableLength, long transmissionId, Action action) const

virtual void	animatePacketProgress (Packet packet, cGate gate, bps datarate, b position, b extraProcessableLength, const SendOptions &sendOptions, Action action) const

virtual void	pushOrSendPacket (Packet packet, cGate gate, IPassivePacketSink *consumer)

virtual void	pushOrSendPacketStart (Packet packet, cGate gate, IPassivePacketSink *consumer, bps datarate, int transmissionId)

virtual void	pushOrSendPacketEnd (Packet packet, cGate gate, IPassivePacketSink *consumer, int transmissionId)

virtual void	pushOrSendPacketProgress (Packet packet, cGate gate, IPassivePacketSink *consumer, bps datarate, b position, b extraProcessableLength, int transmissionId)

virtual void	animatePush (Packet packet, cGate gate, const SendOptions &sendOptions) const

virtual void	animatePushPacket (Packet packet, cGate gate) const

virtual void	animatePushPacketStart (Packet packet, cGate gate, bps datarate, long transmissionId) const

virtual void	animatePushPacketStart (Packet packet, cGate gate, bps datarate, const SendOptions &sendOptions) const

virtual void	animatePushPacketEnd (Packet packet, cGate gate, long transmissionId) const

virtual void	animatePushPacketEnd (Packet packet, cGate gate, const SendOptions &sendOptions) const

virtual void	animatePushPacketProgress (Packet packet, cGate gate, bps datarate, b position, b extraProcessableLength, long transmissionId) const

virtual void	animatePushPacketProgress (Packet packet, cGate gate, bps datarate, b position, b extraProcessableLength, const SendOptions &sendOptions) const

virtual void	animatePull (Packet packet, cGate gate, const SendOptions &sendOptions) const

virtual void	animatePullPacket (Packet packet, cGate gate) const

virtual void	animatePullPacketStart (Packet packet, cGate gate, bps datarate, long transmissionId) const

virtual void	animatePullPacketStart (Packet packet, cGate gate, bps datarate, const SendOptions &sendOptions) const

virtual void	animatePullPacketEnd (Packet packet, cGate gate, long transmissionId) const

virtual void	animatePullPacketEnd (Packet packet, cGate gate, const SendOptions &sendOptions) const

virtual void	animatePullPacketProgress (Packet packet, cGate gate, bps datarate, b position, b extraProcessableLength, long transmissionId) const

virtual void	animatePullPacketProgress (Packet packet, cGate gate, bps datarate, b position, b extraProcessableLength, const SendOptions &sendOptions) const

virtual void	dropPacket (Packet *packet, PacketDropReason reason, int limit=-1)

virtual void	updateDisplayString () const

Protected Attributes
cGate *	outputGate = nullptr

IPassivePacketSink *	consumer = nullptr

std::vector< int >	dscps

int	numRcvd = 0

int	numMarked = 0

Protected Attributes inherited from inet::queueing::PacketProcessorBase
const char *	displayStringTextFormat = nullptr

int	numProcessedPackets = -1

b	processedTotalLength = b(-1)

Static Protected Attributes
static simsignal_t	packetMarkedSignal = registerSignal("packetMarked")

Additional Inherited Members
Protected Types inherited from inet::queueing::PacketProcessorBase
enum	Action { PUSH, PULL }

Detailed Description

DSCP Marker.

Constructor & Destructor Documentation

◆ DscpMarker()

inet::DscpMarker::DscpMarker ( )

inline

36 {}

Member Function Documentation

◆ canPushPacket()

virtual bool inet::DscpMarker::canPushPacket	(	Packet *	packet,
		cGate *	gate
	)		const

inlineoverridevirtual

Returns true if the given packet can be pushed at the given gate into the packet sink without raising an error.

The packet must not be nullptr. The gate must be a valid gate of this module and it must support pushing packets.

Implements inet::queueing::IPassivePacketSink.

44 { return true; }

◆ canPushSomePacket()

virtual bool inet::DscpMarker::canPushSomePacket ( cGate * gate ) const

inlineoverridevirtual

Returns false if the packet sink is full at the given gate and no more packets can be pushed into it without raising an error.

The gate must be a valid gate of this module and it must support pushing packets.

Implements inet::queueing::IPassivePacketSink.

43 { return true; }

◆ getConsumer()

virtual queueing::IPassivePacketSink* inet::DscpMarker::getConsumer ( cGate * gate )

inlineoverridevirtual

Returns the passive packet sink where packets are pushed or nullptr if the connected module doesn't implement the interface.

The gate parameter must be a valid gate of this module.

Implements inet::queueing::IActivePacketSource.

41 { return this; }

◆ handleCanPushPacketChanged()

virtual void inet::DscpMarker::handleCanPushPacketChanged ( cGate * gate )

inlineoverridevirtual

Notifies about a change in the possibility of pushing some packet into the passive packet sink at the given gate.

This method is called, for example, when a new packet can be inserted into a queue. It allows the source to push a new packet into the queue.

The gate parameter must be a valid gate of this module.

Implements inet::queueing::IActivePacketSource.

50 {}

◆ handleMessage()

void inet::DscpMarker::handleMessage ( cMessage * message )

overrideprotectedvirtual

 {
     auto packet = check_and_cast<Packet *>(message);
     pushPacket(packet, packet->getArrivalGate());
 }

◆ handlePushPacketProcessed()

virtual void inet::DscpMarker::handlePushPacketProcessed	(	Packet *	packet,
		cGate *	gate,
		bool	successful
	)

inlineoverridevirtual

Notifies about the completion of the packet processing for a packet that was pushed earlier independently whether the packet is passed or streamed.

This method is called, for example, when a previously pushed packet is failed to be processed successfully. It allows the source to retry the operation.

The gate parameter must be a valid gate of this module. The packet must not be nullptr.

Implements inet::queueing::IActivePacketSource.

62 {}

◆ initialize()

void inet::DscpMarker::initialize ( int stage )

overrideprotectedvirtual

Reimplemented from inet::queueing::PacketProcessorBase.

 {
     PacketProcessorBase::initialize(stage);
     if (stage == INITSTAGE_LOCAL) {
         outputGate = gate("out");
         consumer = findConnectedModule<IPassivePacketSink>(outputGate);
         parseDSCPs(par("dscps"), "dscps", dscps);
         if (dscps.empty())
             dscps.push_back(DSCP_BE);
         while ((int)dscps.size() < gateSize("in"))
             dscps.push_back(dscps.back());
  
         numRcvd = 0;
         numMarked = 0;
         WATCH(numRcvd);
         WATCH(numMarked);
     }
 }

◆ markPacket()

bool inet::DscpMarker::markPacket	(	Packet *	msg,
		int	dscp
	)

protectedvirtual

 {
     EV_DETAIL << "Marking packet with dscp=" << dscpToString(dscp) << "\n";
  
     b offset(0);
     auto protocol = packet->getTag<PacketProtocolTag>()->getProtocol();
  
     if (protocol->getLayer() == Protocol::LinkLayer) {
         if (protocol == &Protocol::ethernetMac) {
 #ifdef INET_WITH_ETHERNET
             auto ethHeader = packet->peekDataAt<EthernetMacHeader>(offset);
             if (isEth2Header(*ethHeader)) {
                 offset += ethHeader->getChunkLength();
                 protocol = ProtocolGroup::ethertype.getProtocol(ethHeader->getTypeOrLength());
             }
 #else
         throw cRuntimeError("Ethernet feature is disabled");
 #endif // #ifdef INET_WITH_ETHERNET
         }
         else
             return false;
     }
  
     if (protocol->getLayer() != Protocol::NetworkLayer)
         return false;
 #ifdef INET_WITH_IPv4
     else if (protocol == &Protocol::ipv4) {
         packet->removeTagIfPresent<NetworkProtocolInd>();
         auto ipv4Header = packet->removeDataAt<Ipv4Header>(offset);
         ipv4Header->setDscp(dscp);
         Ipv4::insertCrc(ipv4Header); // recalculate IP header checksum
         auto networkProtocolInd = packet->addTagIfAbsent<NetworkProtocolInd>();
         networkProtocolInd->setProtocol(protocol);
         networkProtocolInd->setNetworkProtocolHeader(ipv4Header);
         packet->insertDataAt(ipv4Header, offset);
         return true;
     }
 #endif // ifdef INET_WITH_IPv4
 #ifdef INET_WITH_IPv6
     else if (protocol == &Protocol::ipv6) {
         packet->removeTagIfPresent<NetworkProtocolInd>();
         auto ipv6Header = packet->removeDataAt<Ipv6Header>(offset);
         ipv6Header->setDscp(dscp);
         auto networkProtocolInd = packet->addTagIfAbsent<NetworkProtocolInd>();
         networkProtocolInd->setProtocol(protocol);
         networkProtocolInd->setNetworkProtocolHeader(ipv6Header);
         packet->insertDataAt(ipv6Header, offset);
         return true;
     }
 #endif // ifdef INET_WITH_IPv6
     return false;
 }

◆ pushPacket()

void inet::DscpMarker::pushPacket	(	Packet *	packet,
		cGate *	gate
	)

overridevirtual

Pushes the packet into the packet sink at the given gate.

This operation pushes the packet as a whole. The onwership of the packet is transferred to the sink.

This method is called, for example, when a packet source module pushes a packet into a queue module.

The sink must not be full at the gate. The packet must not be nullptr. The gate must be a valid gate of this module and it must support pushing and passing packets.

Implements inet::queueing::IPassivePacketSink.

 {
     Enter_Method("pushPacket");
     take(packet);
     numRcvd++;
     int dscp = dscps.at(inputGate->getIndex());
     if (markPacket(packet, dscp)) {
         emit(packetMarkedSignal, packet);
         numMarked++;
     }
     pushOrSendPacket(packet, outputGate, consumer);
 }

◆ pushPacketEnd()

virtual void inet::DscpMarker::pushPacketEnd	(	Packet *	packet,
		cGate *	gate
	)

inlineoverridevirtual

Ends pushing the packet into the packet sink at the given gate.

This is a packet streaming operation. The onwership of the packet is transferred to the sink.

Packet streaming can be started with any of the streaming operations, and ends when the streaming position plus the extra processable packet length equals to the total packet length.

This method is called, for example, when a preemption supporting server module ends streaming a packet to the sink.

The sink must not be full at the gate and no other packet streaming can be in progress. The packet must not be nullptr. The gate must be a valid gate of this module and it must support pushing and streaming packets.

Implements inet::queueing::IPassivePacketSink.

47 { throw cRuntimeError("Invalid operation"); }

◆ pushPacketProgress()

virtual void inet::DscpMarker::pushPacketProgress	(	Packet *	packet,
		cGate *	gate,
		bps	datarate,
		b	position,
		b	extraProcessableLength = `b(0)`
	)

inlineoverridevirtual

Progresses pushing the packet into the packet sink at the given gate.

This is a packet streaming operation. The position specifies where the packet streaming is at the moment. The extra length parameter partially fixes the future of the packet streaming operation. The onwership of the packet is transferred to the sink.

Packet streaming can be started with any of the streaming operations, and ends when the streaming position plus the extra processable packet length equals to the total packet length.

This method is called, for example, to notify the sink about a change in the packet data when a preemption occurs.

The sink must not be full at the gate and no other packet streaming can be in progress. The packet must not be nullptr. The gate must be a valid gate of this module and it must support pushing and streaming packets.

Implements inet::queueing::IPassivePacketSink.

48 { throw cRuntimeError("Invalid operation"); }

◆ pushPacketStart()

virtual void inet::DscpMarker::pushPacketStart	(	Packet *	packet,
		cGate *	gate,
		bps	datarate
	)

inlineoverridevirtual

Starts pushing the packet into the packet sink at the given gate.

This is a packet streaming operation. The onwership of the packet is transferred to the sink.

Packet streaming can be started with any of the streaming operations, and ends when the streaming position plus the extra processable packet length equals to the total packet length.

This method is called, for example, when a preemption supporting server module starts streaming a packet to the sink.

The sink must not be full at the gate and no other packet streaming can be in progress. The packet must not be nullptr. The gate must be a valid gate of this module and it must support pushing and streaming packets.

Implements inet::queueing::IPassivePacketSink.

46 { throw cRuntimeError("Invalid operation"); }

◆ refreshDisplay()

void inet::DscpMarker::refreshDisplay ( ) const

overrideprotectedvirtual

Reimplemented from inet::queueing::PacketProcessorBase.

 {
     char buf[50] = "";
     if (numRcvd > 0)
         sprintf(buf + strlen(buf), "rcvd: %d ", numRcvd);
     if (numMarked > 0)
         sprintf(buf + strlen(buf), "mark:%d ", numMarked);
     getDisplayString().setTagArg("t", 0, buf);
 }

◆ supportsPacketPulling()

virtual bool inet::DscpMarker::supportsPacketPulling ( cGate * gate ) const

inlineoverridevirtual

Returns true if the processor supports pulling packets at the given gate.

Pulling a packet is a synchronous operation that is initiated by the sink module. A pulled packet can be passed as a whole using pullPacket(), or it can be streamed from the source to the sink using pullPacketStart(), pullPacketEnd(), and pullPacketProgress().

For output gates, true means that the connected module can pull packets from this module. For input gates, true means that this module can pull packets from the connected module. For example, a packet server module can pull packets from a queue module.

Connecting incompatible gates raises an error during initialize. The gate parameter must be a valid gate of this module. The gate should be marked with @labels(pull) in the NED file.

Implements inet::queueing::IPacketProcessor.

39 { return false; }

◆ supportsPacketPushing()

virtual bool inet::DscpMarker::supportsPacketPushing ( cGate * gate ) const

inlineoverridevirtual

Returns true if the processor supports pushing packets at the given gate.

Pushing a packet is a synchronous operation that is initiated by the source module. A pushed packet can be passed as a whole using pushPacket(), or it can be streamed from the source to the sink using pushPacketStart(), pushPacketEnd(), and pushPacketProgress().

For output gates, true means that this module can push packets into the connected module. For input gates, true means that the connected module can push packets into this module. For example, a packet generator module can push packets into a queue module.

Connecting incompatible gates raises an error during initialize. The gate parameter must be a valid gate of this module. The gate should be marked with @labels(push) in the NED file.

Implements inet::queueing::IPacketProcessor.

38 { return true; }

Member Data Documentation

◆ consumer

IPassivePacketSink* inet::DscpMarker::consumer = nullptr

protected

◆ dscps

std::vector<int> inet::DscpMarker::dscps

protected

◆ numMarked

int inet::DscpMarker::numMarked = 0

protected

◆ numRcvd

int inet::DscpMarker::numRcvd = 0

protected

◆ outputGate

cGate* inet::DscpMarker::outputGate = nullptr

protected

◆ packetMarkedSignal

simsignal_t inet::DscpMarker::packetMarkedSignal = registerSignal("packetMarked")

staticprotected

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

Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ DscpMarker()

Member Function Documentation

◆ canPushPacket()

◆ canPushSomePacket()

◆ getConsumer()

◆ handleCanPushPacketChanged()

◆ handleMessage()

◆ handlePushPacketProcessed()

◆ initialize()

◆ markPacket()

◆ pushPacket()

◆ pushPacketEnd()

◆ pushPacketProgress()

◆ pushPacketStart()

◆ refreshDisplay()

◆ supportsPacketPulling()

◆ supportsPacketPushing()

Member Data Documentation

◆ consumer

◆ dscps

◆ numMarked

◆ numRcvd

◆ outputGate

◆ packetMarkedSignal