handle packet fragmentation and retransmissions.This class implements the packet fragmentation and retransmission policy. It uses the ns3::MacLow and ns3::DcfManager helper classes to respectively send packets and decide when to send them. Packets are stored in a ns3::WifiMacQueue until they can be sent. More...

#include <dca-txop.h>

Inheritance diagram for ns3::DcaTxop:

Collaboration diagram for ns3::DcaTxop:

Classes
class	Dcf

class	TransmissionListener

Public Types
typedef Callback< void, const WifiMacHeader & >	TxFailed

typedef Callback< void, const WifiMacHeader & >	TxOk

Public Member Functions
	DcaTxop ()

	~DcaTxop ()

int64_t	AssignStreams (int64_t stream)

virtual uint32_t	GetAifsn (void) const

virtual uint32_t	GetMaxCw (void) const

virtual uint32_t	GetMinCw (void) const

Ptr< WifiMacQueue >	GetQueue () const

void	Queue (Ptr< const Packet > packet, const WifiMacHeader &hdr)

virtual void	SetAifsn (uint32_t aifsn)

void	SetLow (Ptr< MacLow > low)

void	SetManager (DcfManager *manager)

virtual void	SetMaxCw (uint32_t maxCw)

virtual void	SetMinCw (uint32_t minCw)

void	SetTxFailedCallback (TxFailed callback)

void	SetTxOkCallback (TxOk callback)

void	SetWifiRemoteStationManager (Ptr< WifiRemoteStationManager > remoteManager)

Public Member Functions inherited from ns3::Object
	Object ()

virtual	~Object ()

void	AggregateObject (Ptr< Object > other)

void	Dispose (void)

AggregateIterator	GetAggregateIterator (void) const

virtual TypeId	GetInstanceTypeId (void) const

template<typename T >
Ptr< T >	GetObject (void) const

template<typename T >
Ptr< T >	GetObject (TypeId tid) const

void	Initialize (void)

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()

	SimpleRefCount (const SimpleRefCount &o)

uint32_t	GetReferenceCount (void) const

SimpleRefCount &	operator= (const SimpleRefCount &o)

void	Ref (void) const

void	Unref (void) const

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()

void	GetAttribute (std::string name, AttributeValue &value) const

bool	GetAttributeFailSafe (std::string name, AttributeValue &attribute) const

void	SetAttribute (std::string name, const AttributeValue &value)

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)

Static Public Member Functions
static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::Dcf
static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)

Private Member Functions
	DcaTxop (const DcaTxop &o)

void	Cancel (void)

virtual void	DoDispose (void)

void	DoInitialize ()

void	EndTxNoAck (void)

uint32_t	GetFragmentOffset (void)

Ptr< Packet >	GetFragmentPacket (WifiMacHeader *hdr)

uint32_t	GetFragmentSize (void)

uint32_t	GetNextFragmentSize (void)

void	GotAck (double snr, WifiMode txMode)

void	GotCts (double snr, WifiMode txMode)

bool	IsLastFragment (void)

Ptr< MacLow >	Low (void)

void	MissedAck (void)

void	MissedCts (void)

bool	NeedDataRetransmission (void)

bool	NeedFragmentation (void)

bool	NeedRts (Ptr< const Packet > packet, const WifiMacHeader *header)

bool	NeedRtsRetransmission (void)

bool	NeedsAccess (void) const

void	NextFragment (void)

void	NotifyAccessGranted (void)

void	NotifyChannelSwitching (void)

void	NotifyCollision (void)

void	NotifyInternalCollision (void)

DcaTxop &	operator= (const DcaTxop &)

void	RestartAccessIfNeeded (void)

void	StartAccessIfNeeded (void)

void	StartNext (void)

Private Attributes
bool	m_accessOngoing

WifiMacHeader	m_currentHdr

Ptr< const Packet >	m_currentPacket

Dcf *	m_dcf

uint8_t	m_fragmentNumber

Ptr< MacLow >	m_low

DcfManager *	m_manager

Ptr< WifiMacQueue >	m_queue

RandomStream *	m_rng

Ptr< WifiRemoteStationManager >	m_stationManager

TransmissionListener *	m_transmissionListener

TxFailed	m_txFailedCallback

MacTxMiddle *	m_txMiddle

TxOk	m_txOkCallback

Friends
class	Dcf

class	TransmissionListener

Additional Inherited Members
Protected Member Functions inherited from ns3::Object
	Object (const Object &o)

virtual void	NotifyNewAggregate (void)

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)

virtual void	NotifyConstructionCompleted (void)

Detailed Description

handle packet fragmentation and retransmissions.

This class implements the packet fragmentation and retransmission policy. It uses the ns3::MacLow and ns3::DcfManager helper classes to respectively send packets and decide when to send them. Packets are stored in a ns3::WifiMacQueue until they can be sent.

The policy currently implemented uses a simple fragmentation threshold: any packet bigger than this threshold is fragmented in fragments whose size is smaller than the threshold.

The retransmission policy is also very simple: every packet is retransmitted until it is either successfully transmitted or it has been retransmitted up until the ssrc or slrc thresholds.

The rts/cts policy is similar to the fragmentation policy: when a packet is bigger than a threshold, the rts/cts protocol is used.

Config Paths

ns3::DcaTxop is accessible through the following paths with Config::Set and Config::Connect:

/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Mac/$ns3::RegularWifiMac/DcaTxop

Attributes

Queue: The WifiMacQueue object
- Set with class: ns3::PointerValue
- Underlying type: ns3::Ptr< ns3::WifiMacQueue >
- Flags: read

Attributes defined in parent class ns3::Dcf

MinCw: The minimum value of the contention window.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 15
- Flags: construct write read
MaxCw: The maximum value of the contention window.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 1023
- Flags: construct write read
Aifsn: The AIFSN: the default value conforms to simple DCA.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 2
- Flags: construct write read

No TraceSources are defined for this type.

Definition at line 67 of file dca-txop.h.

Member Typedef Documentation

typedef Callback<void, const WifiMacHeader&> ns3::DcaTxop::TxFailed

Definition at line 73 of file dca-txop.h.

typedef Callback<void, const WifiMacHeader&> ns3::DcaTxop::TxOk

Definition at line 72 of file dca-txop.h.

Constructor & Destructor Documentation

ns3::DcaTxop::DcaTxop ( )

Definition at line 131 of file dca-txop.cc.

References Dcf, m_dcf, m_queue, m_rng, m_transmissionListener, m_txMiddle, NS_LOG_FUNCTION, and TransmissionListener.

ns3::DcaTxop::~DcaTxop ( )

Definition at line 143 of file dca-txop.cc.

References NS_LOG_FUNCTION.

ns3::DcaTxop::DcaTxop ( const DcaTxop & o )

private

Member Function Documentation

int64_t ns3::DcaTxop::AssignStreams ( int64_t stream )

Assign a fixed random variable stream number to the random variables used by this model. Return the number of streams (possibly zero) that have been assigned.

Parameters

stream first stream index to use

Returns: the number of stream indices assigned by this model

Definition at line 255 of file dca-txop.cc.

References ns3::RandomStream::AssignStreams(), m_rng, and NS_LOG_FUNCTION.

Referenced by ns3::AssignWifiRandomStreams().

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void ns3::DcaTxop::Cancel ( void )

private

This happens in only one case: in an AP, you have two DcaTxop:

one is used exclusively for beacons and has a high priority.
the other is used for everything else and has a normal priority.

If the normal queue tries to send a unicast data frame, but if the tx fails (ack timeout), it starts a backoff. If the beacon queue gets a tx oportunity during this backoff, it will trigger a call to this Cancel function.

Since we are already doing a backoff, we will get access to the medium when we can, we have nothing to do here. We just ignore the cancel event and wait until we are given again a tx oportunity.

Note that this is really non-trivial because each of these frames is assigned a sequence number from the same sequence counter (because this is a non-802.11e device) so, the scheme described here fails to ensure in-order delivery of frames at the receiving side. This, however, does not matter in this case because we assume that the receiving side does not update its <seq,ad> tupple for packets whose destination address is a broadcast address.

Definition at line 612 of file dca-txop.cc.

References NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by ns3::DcaTxop::TransmissionListener::Cancel().

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void ns3::DcaTxop::DoDispose ( void )

privatevirtual

This method is called by Object::Dispose or by the object's destructor, whichever comes first.

Subclasses are expected to implement their real destruction code in an overriden version of this method and chain up to their parent's implementation once they are done. i.e., for simplicity, the destructor of every subclass should be empty and its content should be moved to the associated DoDispose method.

It is safe to call GetObject from within this method.

Reimplemented from ns3::Object.

Definition at line 149 of file dca-txop.cc.

References m_dcf, m_low, m_queue, m_rng, m_stationManager, m_transmissionListener, m_txMiddle, and NS_LOG_FUNCTION.

void ns3::DcaTxop::DoInitialize ( void )

privatevirtual

This method is called only once by Object::Initialize. If the user calls Object::Initialize multiple times, DoInitialize is called only the first time.

Subclasses are expected to override this method and chain up to their parent's implementation once they are done. It is safe to call GetObject and AggregateObject from within this method.

Reimplemented from ns3::Object.

Definition at line 303 of file dca-txop.cc.

References ns3::Object::DoInitialize(), ns3::DcfState::GetCw(), ns3::RandomStream::GetNext(), m_dcf, m_rng, NS_LOG_FUNCTION, ns3::DcfState::ResetCw(), and ns3::DcfState::StartBackoffNow().

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void ns3::DcaTxop::EndTxNoAck ( void )

private

Definition at line 644 of file dca-txop.cc.

References ns3::DcfState::GetCw(), ns3::RandomStream::GetNext(), m_currentPacket, m_dcf, m_rng, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::DcfState::ResetCw(), StartAccessIfNeeded(), and ns3::DcfState::StartBackoffNow().

Referenced by ns3::DcaTxop::TransmissionListener::EndTxNoAck().

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uint32_t ns3::DcaTxop::GetAifsn ( void ) const

virtual

Implements ns3::Dcf.

Definition at line 236 of file dca-txop.cc.

References ns3::DcfState::GetAifsn(), m_dcf, and NS_LOG_FUNCTION.

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uint32_t ns3::DcaTxop::GetFragmentOffset ( void )

private

Definition at line 364 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_currentPacket, m_fragmentNumber, m_stationManager, and NS_LOG_FUNCTION.

Referenced by GetFragmentPacket().

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Ptr< Packet > ns3::DcaTxop::GetFragmentPacket ( WifiMacHeader * hdr )

private

Definition at line 372 of file dca-txop.cc.

References ns3::Packet::CreateFragment(), GetFragmentOffset(), GetFragmentSize(), IsLastFragment(), m_currentHdr, m_currentPacket, m_fragmentNumber, NS_LOG_FUNCTION, ns3::WifiMacHeader::SetFragmentNumber(), ns3::WifiMacHeader::SetMoreFragments(), and ns3::WifiMacHeader::SetNoMoreFragments().

Referenced by NotifyAccessGranted(), and StartNext().

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uint32_t ns3::DcaTxop::GetFragmentSize ( void )

private

Definition at line 341 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_currentPacket, m_fragmentNumber, m_stationManager, and NS_LOG_FUNCTION.

Referenced by GetFragmentPacket().

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uint32_t ns3::DcaTxop::GetMaxCw ( void ) const

virtual

Implements ns3::Dcf.

Definition at line 230 of file dca-txop.cc.

References ns3::DcfState::GetCwMax(), m_dcf, and NS_LOG_FUNCTION.

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uint32_t ns3::DcaTxop::GetMinCw ( void ) const

virtual

Implements ns3::Dcf.

Definition at line 224 of file dca-txop.cc.

References ns3::DcfState::GetCwMin(), m_dcf, and NS_LOG_FUNCTION.

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uint32_t ns3::DcaTxop::GetNextFragmentSize ( void )

private

Definition at line 356 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_currentPacket, m_fragmentNumber, m_stationManager, and NS_LOG_FUNCTION.

Referenced by NotifyAccessGranted(), and StartNext().

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Ptr< WifiMacQueue > ns3::DcaTxop::GetQueue ( void ) const

Definition at line 199 of file dca-txop.cc.

References m_queue, and NS_LOG_FUNCTION.

Referenced by GetTypeId().

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TypeId ns3::DcaTxop::GetTypeId ( void )

static

Definition at line 118 of file dca-txop.cc.

References ns3::TypeId::AddConstructor(), GetQueue(), ns3::Dcf::GetTypeId(), and ns3::TypeId::SetParent().

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void ns3::DcaTxop::GotAck	(	double	snr,
		WifiMode	txMode
	)

private

Definition at line 536 of file dca-txop.cc.

References ns3::DcfState::GetCw(), ns3::RandomStream::GetNext(), ns3::Packet::GetSize(), IsLastFragment(), ns3::Callback< R, T1, T2, T3, T4, T5, T6, T7, T8, T9 >::IsNull(), m_currentHdr, m_currentPacket, m_dcf, m_rng, m_txOkCallback, NeedFragmentation(), NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::DcfState::ResetCw(), RestartAccessIfNeeded(), and ns3::DcfState::StartBackoffNow().

Referenced by ns3::DcaTxop::TransmissionListener::GotAck().

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void ns3::DcaTxop::GotCts	(	double	snr,
		WifiMode	txMode
	)

private

Definition at line 506 of file dca-txop.cc.

References NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by ns3::DcaTxop::TransmissionListener::GotCts().

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bool ns3::DcaTxop::IsLastFragment ( void )

private

Definition at line 348 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_currentPacket, m_fragmentNumber, m_stationManager, and NS_LOG_FUNCTION.

Referenced by GetFragmentPacket(), GotAck(), NotifyAccessGranted(), and StartNext().

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Ptr< MacLow > ns3::DcaTxop::Low ( void )

private

Definition at line 288 of file dca-txop.cc.

References m_low, and NS_LOG_FUNCTION.

Referenced by NotifyAccessGranted(), and StartNext().

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void ns3::DcaTxop::MissedAck ( void )

private

Definition at line 562 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::DcfState::GetCw(), ns3::RandomStream::GetNext(), ns3::Callback< R, T1, T2, T3, T4, T5, T6, T7, T8, T9 >::IsNull(), m_currentHdr, m_currentPacket, m_dcf, m_rng, m_stationManager, m_txFailedCallback, NeedDataRetransmission(), NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::DcfState::ResetCw(), RestartAccessIfNeeded(), ns3::WifiMacHeader::SetRetry(), ns3::DcfState::StartBackoffNow(), and ns3::DcfState::UpdateFailedCw().

Referenced by ns3::DcaTxop::TransmissionListener::MissedAck().

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void ns3::DcaTxop::MissedCts ( void )

private

Definition at line 512 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::DcfState::GetCw(), ns3::RandomStream::GetNext(), ns3::Callback< R, T1, T2, T3, T4, T5, T6, T7, T8, T9 >::IsNull(), m_currentHdr, m_currentPacket, m_dcf, m_rng, m_stationManager, m_txFailedCallback, NeedRtsRetransmission(), NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::DcfState::ResetCw(), RestartAccessIfNeeded(), ns3::DcfState::StartBackoffNow(), and ns3::DcfState::UpdateFailedCw().

Referenced by ns3::DcaTxop::TransmissionListener::MissedCts().

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bool ns3::DcaTxop::NeedDataRetransmission ( void )

private

Definition at line 319 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_currentPacket, m_stationManager, and NS_LOG_FUNCTION.

Referenced by MissedAck().

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bool ns3::DcaTxop::NeedFragmentation ( void )

private

Definition at line 326 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_currentPacket, m_stationManager, and NS_LOG_FUNCTION.

Referenced by GotAck(), and NotifyAccessGranted().

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bool ns3::DcaTxop::NeedRts	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	header
	)

private

Definition at line 295 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), m_stationManager, and NS_LOG_FUNCTION.

Referenced by NotifyAccessGranted().

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bool ns3::DcaTxop::NeedRtsRetransmission ( void )

private

Definition at line 311 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_currentPacket, m_stationManager, and NS_LOG_FUNCTION.

Referenced by MissedCts().

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bool ns3::DcaTxop::NeedsAccess ( void ) const

private

Definition at line 393 of file dca-txop.cc.

References m_currentPacket, m_queue, and NS_LOG_FUNCTION.

void ns3::DcaTxop::NextFragment ( void )

private

Definition at line 334 of file dca-txop.cc.

References m_fragmentNumber, and NS_LOG_FUNCTION.

Referenced by StartNext().

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void ns3::DcaTxop::NotifyAccessGranted ( void )

private

Definition at line 399 of file dca-txop.cc.

References ns3::MacLowTransmissionParameters::DisableAck(), ns3::MacLowTransmissionParameters::DisableNextData(), ns3::MacLowTransmissionParameters::DisableOverrideDurationId(), ns3::MacLowTransmissionParameters::DisableRts(), ns3::MacLowTransmissionParameters::EnableAck(), ns3::MacLowTransmissionParameters::EnableNextData(), ns3::MacLowTransmissionParameters::EnableRts(), ns3::WifiMacHeader::GetAddr1(), GetFragmentPacket(), GetNextFragmentSize(), ns3::MacTxMiddle::GetNextSequenceNumberfor(), ns3::WifiMacHeader::GetSequenceControl(), ns3::Packet::GetSize(), ns3::Mac48Address::IsGroup(), IsLastFragment(), Low(), m_currentHdr, m_currentPacket, m_fragmentNumber, m_queue, m_transmissionListener, m_txMiddle, NeedFragmentation(), NeedRts(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::WifiMacHeader::SetFragmentNumber(), ns3::WifiMacHeader::SetNoMoreFragments(), ns3::WifiMacHeader::SetNoRetry(), and ns3::WifiMacHeader::SetSequenceNumber().

Referenced by ns3::DcaTxop::Dcf::DoNotifyAccessGranted().

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void ns3::DcaTxop::NotifyChannelSwitching ( void )

private

When a channel switching occurs, enqueued packets are removed.

Definition at line 498 of file dca-txop.cc.

References m_currentPacket, m_queue, and NS_LOG_FUNCTION.

Referenced by ns3::DcaTxop::Dcf::DoNotifyChannelSwitching().

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void ns3::DcaTxop::NotifyCollision ( void )

private

Definition at line 489 of file dca-txop.cc.

References ns3::DcfState::GetCw(), ns3::RandomStream::GetNext(), m_dcf, m_rng, NS_LOG_DEBUG, NS_LOG_FUNCTION, RestartAccessIfNeeded(), and ns3::DcfState::StartBackoffNow().

Referenced by ns3::DcaTxop::Dcf::DoNotifyCollision(), and NotifyInternalCollision().

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void ns3::DcaTxop::NotifyInternalCollision ( void )

private

Definition at line 483 of file dca-txop.cc.

References NotifyCollision(), and NS_LOG_FUNCTION.

Referenced by ns3::DcaTxop::Dcf::DoNotifyInternalCollision().

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DcaTxop& ns3::DcaTxop::operator= ( const DcaTxop & )

private

void ns3::DcaTxop::Queue	(	Ptr< const Packet >	packet,
		const WifiMacHeader &	hdr
	)

Parameters

packet	packet to send
hdr	header of packet to send.

Store the packet in the internal queue until it can be sent safely.

Definition at line 243 of file dca-txop.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacTrailer::GetSerializedSize(), ns3::WifiMacHeader::GetSerializedSize(), ns3::Packet::GetSize(), m_queue, m_stationManager, NS_LOG_FUNCTION, and StartAccessIfNeeded().

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void ns3::DcaTxop::RestartAccessIfNeeded ( void )

private

Definition at line 263 of file dca-txop.cc.

References ns3::DcfState::IsAccessRequested(), m_currentPacket, m_dcf, m_manager, m_queue, NS_LOG_FUNCTION, and ns3::DcfManager::RequestAccess().

Referenced by GotAck(), MissedAck(), MissedCts(), and NotifyCollision().

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void ns3::DcaTxop::SetAifsn ( uint32_t aifsn )

virtual

Implements ns3::Dcf.

Definition at line 218 of file dca-txop.cc.

References m_dcf, NS_LOG_FUNCTION, and ns3::DcfState::SetAifsn().

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void ns3::DcaTxop::SetLow ( Ptr< MacLow > low )

Definition at line 174 of file dca-txop.cc.

References m_low, and NS_LOG_FUNCTION.

void ns3::DcaTxop::SetManager ( DcfManager * manager )

Definition at line 166 of file dca-txop.cc.

References ns3::DcfManager::Add(), m_dcf, m_manager, and NS_LOG_FUNCTION.

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void ns3::DcaTxop::SetMaxCw ( uint32_t maxCw )

virtual

Implements ns3::Dcf.

Definition at line 212 of file dca-txop.cc.

References m_dcf, NS_LOG_FUNCTION, and ns3::DcfState::SetCwMax().

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void ns3::DcaTxop::SetMinCw ( uint32_t minCw )

virtual

Implements ns3::Dcf.

Definition at line 206 of file dca-txop.cc.

References m_dcf, NS_LOG_FUNCTION, and ns3::DcfState::SetCwMin().

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void ns3::DcaTxop::SetTxFailedCallback ( TxFailed callback )

Parameters

callback the callback to invoke when a packet transmission was completed unsuccessfully.

Definition at line 192 of file dca-txop.cc.

References m_txFailedCallback, and NS_LOG_FUNCTION.

void ns3::DcaTxop::SetTxOkCallback ( TxOk callback )

Parameters

callback the callback to invoke when a packet transmission was completed successfully.

Definition at line 186 of file dca-txop.cc.

References m_txOkCallback, and NS_LOG_FUNCTION.

void ns3::DcaTxop::SetWifiRemoteStationManager ( Ptr< WifiRemoteStationManager > remoteManager )

Definition at line 180 of file dca-txop.cc.

References m_stationManager, and NS_LOG_FUNCTION.

void ns3::DcaTxop::StartAccessIfNeeded ( void )

private

Definition at line 275 of file dca-txop.cc.

References ns3::DcfState::IsAccessRequested(), m_currentPacket, m_dcf, m_manager, m_queue, NS_LOG_FUNCTION, and ns3::DcfManager::RequestAccess().

Referenced by EndTxNoAck(), and Queue().

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void ns3::DcaTxop::StartNext ( void )

private

Definition at line 588 of file dca-txop.cc.

References ns3::MacLowTransmissionParameters::DisableNextData(), ns3::MacLowTransmissionParameters::DisableOverrideDurationId(), ns3::MacLowTransmissionParameters::DisableRts(), ns3::MacLowTransmissionParameters::EnableAck(), ns3::MacLowTransmissionParameters::EnableNextData(), GetFragmentPacket(), GetNextFragmentSize(), IsLastFragment(), Low(), m_transmissionListener, NextFragment(), NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by ns3::DcaTxop::TransmissionListener::StartNext().

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Friends And Related Function Documentation

friend class Dcf

friend

Definition at line 124 of file dca-txop.h.

Referenced by DcaTxop().

friend class TransmissionListener

friend

Definition at line 126 of file dca-txop.h.

Referenced by DcaTxop().

Member Data Documentation

bool ns3::DcaTxop::m_accessOngoing

private

Definition at line 177 of file dca-txop.h.

WifiMacHeader ns3::DcaTxop::m_currentHdr

private

Definition at line 179 of file dca-txop.h.

Referenced by GetFragmentOffset(), GetFragmentPacket(), GetFragmentSize(), GetNextFragmentSize(), GotAck(), IsLastFragment(), MissedAck(), MissedCts(), NeedDataRetransmission(), NeedFragmentation(), NeedRtsRetransmission(), and NotifyAccessGranted().

Ptr<const Packet> ns3::DcaTxop::m_currentPacket

private

Definition at line 178 of file dca-txop.h.

Referenced by EndTxNoAck(), GetFragmentOffset(), GetFragmentPacket(), GetFragmentSize(), GetNextFragmentSize(), GotAck(), IsLastFragment(), MissedAck(), MissedCts(), NeedDataRetransmission(), NeedFragmentation(), NeedRtsRetransmission(), NeedsAccess(), NotifyAccessGranted(), NotifyChannelSwitching(), RestartAccessIfNeeded(), and StartAccessIfNeeded().

Dcf* ns3::DcaTxop::m_dcf

private

Definition at line 166 of file dca-txop.h.

Referenced by DcaTxop(), DoDispose(), DoInitialize(), EndTxNoAck(), GetAifsn(), GetMaxCw(), GetMinCw(), GotAck(), MissedAck(), MissedCts(), NotifyCollision(), RestartAccessIfNeeded(), SetAifsn(), SetManager(), SetMaxCw(), SetMinCw(), and StartAccessIfNeeded().

uint8_t ns3::DcaTxop::m_fragmentNumber

private

Definition at line 180 of file dca-txop.h.

Referenced by GetFragmentOffset(), GetFragmentPacket(), GetFragmentSize(), GetNextFragmentSize(), IsLastFragment(), NextFragment(), and NotifyAccessGranted().

Ptr<MacLow> ns3::DcaTxop::m_low

private

Definition at line 172 of file dca-txop.h.

Referenced by DoDispose(), Low(), and SetLow().

DcfManager* ns3::DcaTxop::m_manager

private

Definition at line 167 of file dca-txop.h.

Referenced by RestartAccessIfNeeded(), SetManager(), and StartAccessIfNeeded().

Ptr<WifiMacQueue> ns3::DcaTxop::m_queue

private

Definition at line 170 of file dca-txop.h.

Referenced by DcaTxop(), DoDispose(), GetQueue(), NeedsAccess(), NotifyAccessGranted(), NotifyChannelSwitching(), Queue(), RestartAccessIfNeeded(), and StartAccessIfNeeded().

RandomStream* ns3::DcaTxop::m_rng

private

Definition at line 175 of file dca-txop.h.

Referenced by AssignStreams(), DcaTxop(), DoDispose(), DoInitialize(), EndTxNoAck(), GotAck(), MissedAck(), MissedCts(), and NotifyCollision().

Ptr<WifiRemoteStationManager> ns3::DcaTxop::m_stationManager

private

Definition at line 173 of file dca-txop.h.

Referenced by DoDispose(), GetFragmentOffset(), GetFragmentSize(), GetNextFragmentSize(), IsLastFragment(), MissedAck(), MissedCts(), NeedDataRetransmission(), NeedFragmentation(), NeedRts(), NeedRtsRetransmission(), Queue(), and SetWifiRemoteStationManager().

TransmissionListener* ns3::DcaTxop::m_transmissionListener

private

Definition at line 174 of file dca-txop.h.

Referenced by DcaTxop(), DoDispose(), NotifyAccessGranted(), and StartNext().

TxFailed ns3::DcaTxop::m_txFailedCallback

private

Definition at line 169 of file dca-txop.h.

Referenced by MissedAck(), MissedCts(), and SetTxFailedCallback().

MacTxMiddle* ns3::DcaTxop::m_txMiddle

private

Definition at line 171 of file dca-txop.h.

Referenced by DcaTxop(), DoDispose(), and NotifyAccessGranted().

TxOk ns3::DcaTxop::m_txOkCallback

private

Definition at line 168 of file dca-txop.h.

Referenced by GotAck(), and SetTxOkCallback().

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

src/wifi/model/dca-txop.h
src/wifi/model/dca-txop.cc

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