handle RTS/CTS/DATA/ACK transactions. More...

#include <mac-low.h>

Inheritance diagram for ns3::MacLow:

Collaboration diagram for ns3::MacLow:

Public Types
typedef Callback< void, Ptr < Packet >, const WifiMacHeader * >	MacLowRxCallback

Public Member Functions
	MacLow ()
virtual	~MacLow ()
Time	CalculateTransmissionTime (Ptr< const Packet > packet, const WifiMacHeader *hdr, const MacLowTransmissionParameters &parameters) const
void	CreateBlockAckAgreement (const MgtAddBaResponseHeader *respHdr, Mac48Address originator, uint16_t startingSeq)
void	DestroyBlockAckAgreement (Mac48Address originator, uint8_t tid)
Time	GetAckTimeout (void) const
Mac48Address	GetAddress (void) const
Time	GetBasicBlockAckTimeout () const
Mac48Address	GetBssid (void) const
Time	GetCompressedBlockAckTimeout () const
Time	GetCtsTimeout (void) const
Time	GetPifs (void) const
Time	GetSifs (void) const
Time	GetSlotTime (void) const
void	NotifySwitchingStartNow (Time duration)
void	ReceiveError (Ptr< const Packet > packet, double rxSnr)
void	ReceiveOk (Ptr< Packet > packet, double rxSnr, WifiMode txMode, WifiPreamble preamble)
void	RegisterBlockAckListenerForAc (enum AcIndex ac, MacLowBlockAckEventListener *listener)
void	RegisterDcfListener (MacLowDcfListener *listener)
void	SetAckTimeout (Time ackTimeout)
void	SetAddress (Mac48Address ad)
void	SetBasicBlockAckTimeout (Time blockAckTimeout)
void	SetBssid (Mac48Address ad)
void	SetCompressedBlockAckTimeout (Time blockAckTimeout)
void	SetCtsTimeout (Time ctsTimeout)
void	SetPhy (Ptr< WifiPhy > phy)
void	SetPifs (Time pifs)
void	SetPromisc (void)
void	SetRxCallback (Callback< void, Ptr< Packet >, const WifiMacHeader * > callback)
void	SetSifs (Time sifs)
void	SetSlotTime (Time slotTime)
void	SetWifiRemoteStationManager (Ptr< WifiRemoteStationManager > manager)
void	StartTransmission (Ptr< const Packet > packet, const WifiMacHeader hdr, MacLowTransmissionParameters parameters, MacLowTransmissionListener listener)
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	Start (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)

Private Types
typedef std::pair < Mac48Address, uint8_t >	AgreementKey
typedef std::map< AgreementKey, AgreementValue >	Agreements
typedef std::map< AgreementKey, AgreementValue >::iterator	AgreementsI
typedef std::pair < BlockAckAgreement, std::list < BufferedPacket > >	AgreementValue
typedef std::map< AgreementKey, BlockAckCache >	BlockAckCaches
typedef std::map< AgreementKey, BlockAckCache >::iterator	BlockAckCachesI
typedef std::pair< Ptr< Packet > , WifiMacHeader >	BufferedPacket
typedef std::list < BufferedPacket >::iterator	BufferedPacketI
typedef std::vector < MacLowDcfListener * >	DcfListeners
typedef std::vector < MacLowDcfListener * > ::const_iterator	DcfListenersCI
typedef std::map< AcIndex, MacLowBlockAckEventListener * >	QueueListeners

Private Member Functions
void	BlockAckTimeout (void)
Time	CalculateOverallTxTime (Ptr< const Packet > packet, const WifiMacHeader *hdr, const MacLowTransmissionParameters &params) const
void	CancelAllEvents (void)
void	CtsTimeout (void)
virtual void	DoDispose (void)
void	DoNavResetNow (Time duration)
bool	DoNavStartNow (Time duration)
void	EndTxNoAck (void)
void	FastAckFailedTimeout (void)
void	FastAckTimeout (void)
void	ForwardDown (Ptr< const Packet > packet, const WifiMacHeader *hdr, WifiMode txMode)
Time	GetAckDuration (Mac48Address to, WifiMode dataTxMode) const
uint32_t	GetAckSize (void) const
WifiMode	GetAckTxModeForData (Mac48Address to, WifiMode dataTxMode) const
Time	GetBlockAckDuration (Mac48Address to, WifiMode blockAckReqTxMode, enum BlockAckType type) const
uint32_t	GetBlockAckSize (enum BlockAckType type) const
Time	GetCtsDuration (Mac48Address to, WifiMode rtsTxMode) const
uint32_t	GetCtsSize (void) const
WifiMode	GetCtsTxModeForRts (Mac48Address to, WifiMode rtsTxMode) const
WifiMode	GetDataTxMode (Ptr< const Packet > packet, const WifiMacHeader *hdr) const
uint32_t	GetRtsSize (void) const
WifiMode	GetRtsTxMode (Ptr< const Packet > packet, const WifiMacHeader *hdr) const
uint32_t	GetSize (Ptr< const Packet > packet, const WifiMacHeader *hdr) const
bool	IsNavZero (void) const
void	MaybeCancelPrevious (void)
void	NavCounterResetCtsMissed (Time rtsEndRxTime)
void	NormalAckTimeout (void)
void	NotifyAckTimeoutResetNow ()
void	NotifyAckTimeoutStartNow (Time duration)
void	NotifyCtsTimeoutResetNow ()
void	NotifyCtsTimeoutStartNow (Time duration)
void	NotifyNav (const WifiMacHeader &hdr, WifiMode txMode, WifiPreamble preamble)
Time	NowUs (void) const
void	ResetBlockAckInactivityTimerIfNeeded (BlockAckAgreement &agreement)
void	RxCompleteBufferedPacketsUntilFirstLost (Mac48Address originator, uint8_t tid)
void	RxCompleteBufferedPacketsWithSmallerSequence (uint16_t seq, Mac48Address originator, uint8_t tid)
void	SendAckAfterData (Mac48Address source, Time duration, WifiMode txMode, double rtsSnr)
void	SendBlockAckAfterBlockAckRequest (const CtrlBAckRequestHeader reqHdr, Mac48Address originator, Time duration, WifiMode blockAckReqTxMode)
void	SendBlockAckResponse (const CtrlBAckResponseHeader *blockAck, Mac48Address originator, bool immediate, Time duration, WifiMode blockAckReqTxMode)
void	SendCtsAfterRts (Mac48Address source, Time duration, WifiMode txMode, double rtsSnr)
void	SendCurrentTxPacket (void)
void	SendDataAfterCts (Mac48Address source, Time duration, WifiMode txMode)
void	SendDataPacket (void)
void	SendRtsForPacket (void)
void	SetupPhyMacLowListener (Ptr< WifiPhy > phy)
void	StartDataTxTimers (void)
bool	StoreMpduIfNeeded (Ptr< Packet > packet, WifiMacHeader hdr)
void	SuperFastAckTimeout (void)
void	WaitSifsAfterEndTx (void)

Private Attributes
Time	m_ackTimeout
Agreements	m_bAckAgreements
BlockAckCaches	m_bAckCaches
Time	m_basicBlockAckTimeout
EventId	m_blockAckTimeoutEvent
Mac48Address	m_bssid
Time	m_compressedBlockAckTimeout
Time	m_ctsTimeout
EventId	m_ctsTimeoutEvent
WifiMacHeader	m_currentHdr
Ptr< Packet >	m_currentPacket
DcfListeners	m_dcfListeners
QueueListeners	m_edcaListeners
EventId	m_endTxNoAckEvent
EventId	m_fastAckFailedTimeoutEvent
EventId	m_fastAckTimeoutEvent
Time	m_lastNavDuration
Time	m_lastNavStart
MacLowTransmissionListener *	m_listener
EventId	m_navCounterResetCtsMissed
EventId	m_normalAckTimeoutEvent
Ptr< WifiPhy >	m_phy
class PhyMacLowListener *	m_phyMacLowListener
Time	m_pifs
bool	m_promisc
MacLowRxCallback	m_rxCallback
Mac48Address	m_self
EventId	m_sendAckEvent
EventId	m_sendCtsEvent
EventId	m_sendDataEvent
Time	m_sifs
Time	m_slotTime
Ptr< WifiRemoteStationManager >	m_stationManager
EventId	m_superFastAckTimeoutEvent
MacLowTransmissionParameters	m_txParams
EventId	m_waitSifsEvent

Additional Inherited Members
Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)
Protected Member Functions inherited from ns3::Object
	Object (const Object &o)
virtual void	DoDispose (void)
virtual void	DoStart (void)
virtual void	NotifyNewAggregate (void)

Detailed Description

handle RTS/CTS/DATA/ACK transactions.

Definition at line 379 of file mac-low.h.

Member Typedef Documentation

typedef std::pair<Mac48Address, uint8_t> ns3::MacLow::AgreementKey

private

Definition at line 657 of file mac-low.h.

typedef std::map<AgreementKey, AgreementValue> ns3::MacLow::Agreements

private

Definition at line 660 of file mac-low.h.

typedef std::map<AgreementKey, AgreementValue>::iterator ns3::MacLow::AgreementsI

private

Definition at line 661 of file mac-low.h.

typedef std::pair<BlockAckAgreement, std::list<BufferedPacket> > ns3::MacLow::AgreementValue

private

Definition at line 658 of file mac-low.h.

typedef std::map<AgreementKey, BlockAckCache> ns3::MacLow::BlockAckCaches

private

Definition at line 663 of file mac-low.h.

typedef std::map<AgreementKey, BlockAckCache>::iterator ns3::MacLow::BlockAckCachesI

private

Definition at line 664 of file mac-low.h.

typedef std::pair<Ptr<Packet>, WifiMacHeader> ns3::MacLow::BufferedPacket

private

Definition at line 654 of file mac-low.h.

typedef std::list<BufferedPacket>::iterator ns3::MacLow::BufferedPacketI

private

Definition at line 655 of file mac-low.h.

typedef std::vector<MacLowDcfListener *> ns3::MacLow::DcfListeners

private

Definition at line 613 of file mac-low.h.

typedef std::vector<MacLowDcfListener *>::const_iterator ns3::MacLow::DcfListenersCI

private

Definition at line 612 of file mac-low.h.

typedef Callback<void, Ptr<Packet>, const WifiMacHeader*> ns3::MacLow::MacLowRxCallback

Definition at line 382 of file mac-low.h.

typedef std::map<AcIndex, MacLowBlockAckEventListener*> ns3::MacLow::QueueListeners

private

Definition at line 669 of file mac-low.h.

Constructor & Destructor Documentation

ns3::MacLow::MacLow ( )

Definition at line 352 of file mac-low.cc.

References m_lastNavDuration, m_lastNavStart, m_promisc, NS_LOG_FUNCTION, and ns3::Seconds().

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ns3::MacLow::~MacLow ( )

virtual

Definition at line 373 of file mac-low.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

void ns3::MacLow::BlockAckTimeout ( void )

private

Definition at line 1238 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_listener, m_stationManager, ns3::MacLowTransmissionListener::MissedBlockAck(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportDataFailed().

Referenced by StartDataTxTimers().

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Time ns3::MacLow::CalculateOverallTxTime	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		const MacLowTransmissionParameters &	params
	)		const

private

Definition at line 1031 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), GetCtsDuration(), GetDataTxMode(), GetRtsSize(), GetRtsTxMode(), GetSifs(), GetSize(), m_phy, ns3::MacLowTransmissionParameters::MustSendRts(), ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::Seconds(), and ns3::WIFI_PREAMBLE_LONG.

Referenced by CalculateTransmissionTime().

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Time ns3::MacLow::CalculateTransmissionTime	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		const MacLowTransmissionParameters &	parameters
	)		const

Parameters

packet	to send (does not include the 802.11 MAC header and checksum)
hdr	header associated to the packet to send.
parameters	transmission parameters of packet.

This transmission time includes the time required for the next packet transmission if one was selected.

Definition at line 1055 of file mac-low.cc.

References CalculateOverallTxTime(), ns3::WifiPhy::CalculateTxDuration(), GetDataTxMode(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetSifs(), ns3::MacLowTransmissionParameters::HasNextPacket(), m_phy, and ns3::WIFI_PREAMBLE_LONG.

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void ns3::MacLow::CancelAllEvents ( void )

private

Definition at line 408 of file mac-low.cc.

References ns3::EventId::Cancel(), ns3::MacLowTransmissionListener::Cancel(), ns3::EventId::IsRunning(), m_blockAckTimeoutEvent, m_ctsTimeoutEvent, m_endTxNoAckEvent, m_fastAckFailedTimeoutEvent, m_fastAckTimeoutEvent, m_listener, m_normalAckTimeoutEvent, m_sendAckEvent, m_sendCtsEvent, m_sendDataEvent, m_superFastAckTimeoutEvent, m_waitSifsEvent, and NS_LOG_FUNCTION.

Referenced by NotifySwitchingStartNow(), and StartTransmission().

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void ns3::MacLow::CreateBlockAckAgreement	(	const MgtAddBaResponseHeader *	respHdr,
		Mac48Address	originator,
		uint16_t	startingSeq
	)

Parameters

respHdr	Add block ack response from originator (action frame).
originator	Address of peer station involved in block ack mechanism.
startingSeq	Sequence number of the first MPDU of all packets for which block ack was negotiated.

This function is typically invoked only by ns3::RegularWifiMac when the STA (which may be non-AP in ESS, or in an IBSS) has received an ADDBA Request frame and is transmitting an ADDBA Response frame. At this point MacLow must allocate buffers to collect all correctly received packets belonging to the category for which Block Ack was negotiated.

Definition at line 1582 of file mac-low.cc.

Referenced by ns3::RegularWifiMac::SendAddBaResponse().

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void ns3::MacLow::CtsTimeout ( void )

private

Definition at line 1194 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_currentPacket, m_listener, m_stationManager, ns3::MacLowTransmissionListener::MissedCts(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportRtsFailed().

Referenced by SendRtsForPacket().

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void ns3::MacLow::DestroyBlockAckAgreement	(	Mac48Address	originator,
		uint8_t	tid
	)

Parameters

originator	Address of peer participating in Block Ack mechanism.
tid	TID for which Block Ack was created.

Checks if exists an established block ack agreement with originator for tid tid. If the agreement exists, tears down it. This function is typically invoked when a DELBA frame is received from originator.

Definition at line 1624 of file mac-low.cc.

References m_bAckAgreements, m_bAckCaches, NS_ASSERT, RxCompleteBufferedPacketsUntilFirstLost(), and RxCompleteBufferedPacketsWithSmallerSequence().

Referenced by ns3::EdcaTxopN::GotAck(), and ns3::RegularWifiMac::Receive().

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void ns3::MacLow::DoDispose ( void )

privatevirtual

Definition at line 387 of file mac-low.cc.

References ns3::EventId::Cancel(), m_blockAckTimeoutEvent, m_ctsTimeoutEvent, m_endTxNoAckEvent, m_fastAckFailedTimeoutEvent, m_fastAckTimeoutEvent, m_normalAckTimeoutEvent, m_phy, m_phyMacLowListener, m_sendAckEvent, m_sendCtsEvent, m_sendDataEvent, m_stationManager, m_superFastAckTimeoutEvent, m_waitSifsEvent, and NS_LOG_FUNCTION.

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void ns3::MacLow::DoNavResetNow ( Time duration )

private

Definition at line 1120 of file mac-low.cc.

References m_dcfListeners, m_lastNavStart, and ns3::Now().

Referenced by NavCounterResetCtsMissed(), and NotifyNav().

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bool ns3::MacLow::DoNavStartNow ( Time duration )

private

Definition at line 1130 of file mac-low.cc.

References m_dcfListeners, m_lastNavDuration, m_lastNavStart, and ns3::Now().

Referenced by NotifyNav().

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void ns3::MacLow::EndTxNoAck ( void )

private

Definition at line 1501 of file mac-low.cc.

References ns3::MacLowTransmissionListener::EndTxNoAck(), and m_listener.

Referenced by StartDataTxTimers().

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void ns3::MacLow::FastAckFailedTimeout ( void )

private

Definition at line 1509 of file mac-low.cc.

References m_listener, ns3::MacLowTransmissionListener::MissedAck(), NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by ReceiveError().

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void ns3::MacLow::FastAckTimeout ( void )

private

Definition at line 1221 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiPhy::IsStateIdle(), m_currentHdr, m_listener, m_phy, m_stationManager, ns3::MacLowTransmissionListener::MissedAck(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportDataFailed().

Referenced by StartDataTxTimers().

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void ns3::MacLow::ForwardDown	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		WifiMode	txMode
	)

private

Definition at line 1180 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetDuration(), ns3::WifiMacHeader::GetSequenceControl(), ns3::Packet::GetSize(), ns3::WifiMacHeader::GetTypeString(), m_currentHdr, m_phy, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::WifiPhy::SendPacket(), and ns3::WIFI_PREAMBLE_LONG.

Referenced by SendAckAfterData(), SendBlockAckResponse(), SendCtsAfterRts(), SendDataAfterCts(), SendDataPacket(), and SendRtsForPacket().

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Time ns3::MacLow::GetAckDuration	(	Mac48Address	to,
		WifiMode	dataTxMode
	)		const

private

Definition at line 965 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetAckSize(), GetAckTxModeForData(), m_phy, and ns3::WIFI_PREAMBLE_LONG.

Referenced by CalculateOverallTxTime(), SendAckAfterData(), SendBlockAckResponse(), SendDataAfterCts(), SendDataPacket(), and SendRtsForPacket().

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uint32_t ns3::MacLow::GetAckSize ( void ) const

private

Definition at line 930 of file mac-low.cc.

References ns3::WifiMacHeader::GetSize(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_ACK.

Referenced by GetAckDuration().

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Time ns3::MacLow::GetAckTimeout ( void ) const

Definition at line 544 of file mac-low.cc.

References m_ackTimeout.

Referenced by ns3::RegularWifiMac::GetAckTimeout(), and StartDataTxTimers().

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WifiMode ns3::MacLow::GetAckTxModeForData	(	Mac48Address	to,
		WifiMode	dataTxMode
	)		const

private

Definition at line 1024 of file mac-low.cc.

References ns3::WifiRemoteStationManager::GetAckMode(), and m_stationManager.

Referenced by GetAckDuration(), and SendAckAfterData().

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Mac48Address ns3::MacLow::GetAddress ( void ) const

Definition at line 539 of file mac-low.cc.

References m_self.

Referenced by ns3::StaWifiMac::Enqueue(), ns3::AdhocWifiMac::Enqueue(), ns3::ApWifiMac::Enqueue(), ns3::MeshWifiInterfaceMac::Enqueue(), ns3::RegularWifiMac::GetAddress(), ns3::EdcaTxopN::SendAddBaRequest(), ns3::EdcaTxopN::SendBlockAckRequest(), SendBlockAckResponse(), and ns3::EdcaTxopN::SendDelbaFrame().

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Time ns3::MacLow::GetBasicBlockAckTimeout ( ) const

Definition at line 549 of file mac-low.cc.

References m_basicBlockAckTimeout.

Referenced by ns3::RegularWifiMac::GetBasicBlockAckTimeout(), and StartDataTxTimers().

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Time ns3::MacLow::GetBlockAckDuration	(	Mac48Address	to,
		WifiMode	blockAckReqTxMode,
		enum BlockAckType	type
	)		const

private

Definition at line 971 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetBlockAckSize(), m_phy, and ns3::WIFI_PREAMBLE_LONG.

Referenced by SendBlockAckResponse(), and SendDataPacket().

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uint32_t ns3::MacLow::GetBlockAckSize ( enum BlockAckType type ) const

private

Definition at line 937 of file mac-low.cc.

References ns3::BASIC_BLOCK_ACK, ns3::COMPRESSED_BLOCK_ACK, ns3::CtrlBAckResponseHeader::GetSerializedSize(), ns3::WifiMacHeader::GetSize(), ns3::MULTI_TID_BLOCK_ACK, NS_ASSERT, ns3::CtrlBAckResponseHeader::SetType(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_BACKRESP.

Referenced by GetBlockAckDuration().

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Mac48Address ns3::MacLow::GetBssid ( void ) const

Definition at line 579 of file mac-low.cc.

References m_bssid.

Referenced by ns3::RegularWifiMac::GetBssid(), ns3::EdcaTxopN::NotifyAccessGranted(), and ns3::EdcaTxopN::SendBlockAckRequest().

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Time ns3::MacLow::GetCompressedBlockAckTimeout ( ) const

Definition at line 554 of file mac-low.cc.

References m_compressedBlockAckTimeout.

Referenced by ns3::RegularWifiMac::GetCompressedBlockAckTimeout(), and StartDataTxTimers().

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Time ns3::MacLow::GetCtsDuration	(	Mac48Address	to,
		WifiMode	rtsTxMode
	)		const

private

Definition at line 984 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetCtsSize(), GetCtsTxModeForRts(), m_phy, and ns3::WIFI_PREAMBLE_LONG.

Referenced by CalculateOverallTxTime(), SendCtsAfterRts(), and SendRtsForPacket().

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uint32_t ns3::MacLow::GetCtsSize ( void ) const

private

Definition at line 990 of file mac-low.cc.

References ns3::WifiMacHeader::GetSize(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_CTS.

Referenced by GetCtsDuration().

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Time ns3::MacLow::GetCtsTimeout ( void ) const

Definition at line 559 of file mac-low.cc.

References m_ctsTimeout.

Referenced by ns3::RegularWifiMac::GetCtsTimeout(), and SendRtsForPacket().

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WifiMode ns3::MacLow::GetCtsTxModeForRts	(	Mac48Address	to,
		WifiMode	rtsTxMode
	)		const

private

Definition at line 1019 of file mac-low.cc.

References ns3::WifiRemoteStationManager::GetCtsMode(), and m_stationManager.

Referenced by GetCtsDuration(), and SendCtsAfterRts().

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WifiMode ns3::MacLow::GetDataTxMode	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr
	)		const

private

Definition at line 1010 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiRemoteStationManager::GetDataMode(), ns3::WifiMacTrailer::GetSerializedSize(), ns3::WifiMacHeader::GetSize(), ns3::Packet::GetSize(), and m_stationManager.

Referenced by CalculateOverallTxTime(), CalculateTransmissionTime(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), and StartDataTxTimers().

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Time ns3::MacLow::GetPifs ( void ) const

Definition at line 574 of file mac-low.cc.

References m_pifs.

Referenced by ns3::RegularWifiMac::GetPifs(), and StartDataTxTimers().

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uint32_t ns3::MacLow::GetRtsSize ( void ) const

private

Definition at line 958 of file mac-low.cc.

References ns3::WifiMacHeader::GetSize(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_RTS.

Referenced by CalculateOverallTxTime(), and SendRtsForPacket().

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WifiMode ns3::MacLow::GetRtsTxMode	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr
	)		const

private

Definition at line 1004 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiRemoteStationManager::GetRtsMode(), and m_stationManager.

Referenced by CalculateOverallTxTime(), and SendRtsForPacket().

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Time ns3::MacLow::GetSifs ( void ) const

Definition at line 564 of file mac-low.cc.

References m_sifs.

Referenced by CalculateOverallTxTime(), CalculateTransmissionTime(), ns3::RegularWifiMac::GetSifs(), NotifyNav(), ReceiveError(), ReceiveOk(), SendAckAfterData(), SendBlockAckResponse(), SendCtsAfterRts(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), and StartDataTxTimers().

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uint32_t ns3::MacLow::GetSize	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr
	)		const

private

Definition at line 997 of file mac-low.cc.

References ns3::WifiMacTrailer::GetSerializedSize(), ns3::WifiMacHeader::GetSize(), and ns3::Packet::GetSize().

Referenced by CalculateOverallTxTime(), SendDataAfterCts(), SendRtsForPacket(), StartDataTxTimers(), and StartTransmission().

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Time ns3::MacLow::GetSlotTime ( void ) const

Definition at line 569 of file mac-low.cc.

References m_slotTime.

Referenced by ns3::RegularWifiMac::GetSlot(), and NotifyNav().

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bool ns3::MacLow::IsNavZero ( void ) const

private

Definition at line 1419 of file mac-low.cc.

References m_lastNavDuration, m_lastNavStart, and ns3::Simulator::Now().

Referenced by ReceiveOk().

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void ns3::MacLow::MaybeCancelPrevious ( void )

private

void ns3::MacLow::NavCounterResetCtsMissed ( Time rtsEndRxTime )

private

Definition at line 1111 of file mac-low.cc.

References DoNavResetNow(), ns3::WifiPhy::GetLastRxStartTime(), m_phy, and ns3::Seconds().

Referenced by NotifyNav().

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void ns3::MacLow::NormalAckTimeout ( void )

private

Definition at line 1208 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), m_currentHdr, m_listener, m_stationManager, ns3::MacLowTransmissionListener::MissedAck(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportDataFailed().

Referenced by StartDataTxTimers().

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void ns3::MacLow::NotifyAckTimeoutResetNow ( )

private

Definition at line 1155 of file mac-low.cc.

References m_dcfListeners.

Referenced by ReceiveOk().

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void ns3::MacLow::NotifyAckTimeoutStartNow ( Time duration )

private

Definition at line 1147 of file mac-low.cc.

References m_dcfListeners.

Referenced by StartDataTxTimers().

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void ns3::MacLow::NotifyCtsTimeoutResetNow ( )

private

Definition at line 1171 of file mac-low.cc.

References m_dcfListeners.

Referenced by ReceiveOk().

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void ns3::MacLow::NotifyCtsTimeoutStartNow ( Time duration )

private

Definition at line 1163 of file mac-low.cc.

References m_dcfListeners.

Referenced by SendRtsForPacket().

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void ns3::MacLow::NotifyNav	(	const WifiMacHeader &	hdr,
		WifiMode	txMode,
		WifiPreamble	preamble
	)

private

A STA that used information from an RTS frame as the most recent basis to update its NAV setting is permitted to reset its NAV if no PHY-RXSTART.indication is detected from the PHY during a period with a duration of (2 * aSIFSTime) + (CTS_Time) + (2 * aSlotTime) starting at the PHY-RXEND.indication corresponding to the detection of the RTS frame. The “CTS_Time” shall be calculated using the length of the CTS frame and the data rate at which the RTS frame used for the most recent NAV update was received.

Definition at line 1070 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), DoNavResetNow(), DoNavStartNow(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::GetDuration(), ns3::WifiMacHeader::GetSerializedSize(), GetSifs(), GetSlotTime(), ns3::WifiMacHeader::IsCfpoll(), ns3::WifiMacHeader::IsRts(), m_bssid, m_lastNavStart, m_navCounterResetCtsMissed, m_phy, m_self, NavCounterResetCtsMissed(), ns3::Simulator::Now(), NS_ASSERT, ns3::Simulator::Schedule(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_CTS.

Referenced by ReceiveOk().

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void ns3::MacLow::NotifySwitchingStartNow ( Time duration )

Parameters

duration switching delay duration.

This method is typically invoked by the PhyMacLowListener to notify the MAC layer that a channel switching occured. When a channel switching occurs, pending MAC transmissions (RTS, CTS, DATA and ACK) are cancelled.

Definition at line 656 of file mac-low.cc.

References ns3::EventId::Cancel(), CancelAllEvents(), ns3::EventId::IsRunning(), m_currentPacket, m_lastNavDuration, m_lastNavStart, m_listener, m_navCounterResetCtsMissed, m_stationManager, ns3::Now(), NS_LOG_DEBUG, ns3::WifiRemoteStationManager::Reset(), and ns3::Seconds().

Referenced by ns3::PhyMacLowListener::NotifySwitchingStart().

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Time ns3::MacLow::NowUs ( void ) const

private

void ns3::MacLow::ReceiveError	(	Ptr< const Packet >	packet,
		double	rxSnr
	)

Parameters

packet	packet received.
rxSnr	snr of packet received.

This method is typically invoked by the lower PHY layer to notify the MAC layer that a packet was unsuccessfully received.

Definition at line 642 of file mac-low.cc.

References FastAckFailedTimeout(), GetSifs(), ns3::EventId::IsExpired(), m_fastAckFailedTimeoutEvent, m_txParams, ns3::MacLowTransmissionParameters::MustWaitFastAck(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Simulator::Schedule().

Referenced by SetPhy().

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void ns3::MacLow::ReceiveOk	(	Ptr< Packet >	packet,
		double	rxSnr,
		WifiMode	txMode,
		WifiPreamble	preamble
	)

Parameters

packet	packet received
rxSnr	snr of packet received
txMode	transmission mode of packet received
preamble	type of preamble used for the packet received

This method is typically invoked by the lower PHY layer to notify the MAC layer that a packet was successfully received.

Definition at line 672 of file mac-low.cc.

Referenced by SetPhy().

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void ns3::MacLow::RegisterBlockAckListenerForAc	(	enum AcIndex	ac,
		MacLowBlockAckEventListener *	listener
	)

Parameters

ac	Access class managed by the queue.
listener	The listener for the queue.

The lifetime of the registered listener is typically equal to the lifetime of the queue associated to this AC.

Definition at line 1857 of file mac-low.cc.

References m_edcaListeners.

Referenced by ns3::EdcaTxopN::CompleteConfig().

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void ns3::MacLow::RegisterDcfListener ( MacLowDcfListener * listener )

Parameters

listener listen to NAV events for every incoming and outgoing packet.

Definition at line 590 of file mac-low.cc.

References m_dcfListeners.

Referenced by ns3::DcfManager::SetupLowListener().

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void ns3::MacLow::ResetBlockAckInactivityTimerIfNeeded ( BlockAckAgreement & agreement )

private

Definition at line 1836 of file mac-low.cc.

References ns3::MacLowBlockAckEventListener::BlockAckInactivityTimeout(), ns3::EventId::Cancel(), ns3::BlockAckAgreement::GetPeer(), ns3::BlockAckAgreement::GetTid(), ns3::BlockAckAgreement::GetTimeout(), ns3::EventId::IsRunning(), m_edcaListeners, ns3::BlockAckAgreement::m_inactivityEvent, ns3::MicroSeconds(), NS_ASSERT, ns3::QosUtilsMapTidToAc(), ns3::Simulator::Schedule(), and timeout.

Referenced by ReceiveOk().

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void ns3::MacLow::RxCompleteBufferedPacketsUntilFirstLost	(	Mac48Address	originator,
		uint8_t	tid
	)

private

Parameters

originator	Address of peer participating in Block Ack mechanism.
tid	TID for which Block Ack was created.

This method is typically invoked when a MPDU with ack policy subfield set to Normal Ack is received and a block ack agreement for that packet exists. This happens when the originator of block ack has only few MPDUs to send. All completed MSDUs starting with starting sequence number of block ack agreement are forward up to WifiMac until there is an incomplete or missing MSDU. See section 9.10.4 in IEEE802.11 standard for more details.

Definition at line 1700 of file mac-low.cc.

References m_bAckAgreements, and m_rxCallback.

Referenced by DestroyBlockAckAgreement(), ReceiveOk(), and SendBlockAckAfterBlockAckRequest().

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void ns3::MacLow::RxCompleteBufferedPacketsWithSmallerSequence	(	uint16_t	seq,
		Mac48Address	originator,
		uint8_t	tid
	)

private

Parameters

originator	Address of peer participating in Block Ack mechanism.
tid	TID for which Block Ack was created.
seq	Starting sequence

This function forward up all completed "old" packets with sequence number smaller than seq. All comparison are performed circularly mod 4096.

Definition at line 1640 of file mac-low.cc.

References m_bAckAgreements, m_rxCallback, and ns3::QosUtilsMapSeqControlToUniqueInteger().

Referenced by DestroyBlockAckAgreement(), ReceiveOk(), and SendBlockAckAfterBlockAckRequest().

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void ns3::MacLow::SendAckAfterData	(	Mac48Address	source,
		Time	duration,
		WifiMode	txMode,
		double	rtsSnr
	)

private

Definition at line 1519 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddPacketTag(), ns3::Packet::AddTrailer(), ForwardDown(), GetAckDuration(), GetAckTxModeForData(), GetSifs(), ns3::MicroSeconds(), NS_ASSERT, NS_LOG_FUNCTION, ns3::SnrTag::Set(), ns3::WifiMacHeader::SetAddr1(), ns3::WifiMacHeader::SetDsNotFrom(), ns3::WifiMacHeader::SetDsNotTo(), ns3::WifiMacHeader::SetDuration(), ns3::WifiMacHeader::SetNoMoreFragments(), ns3::WifiMacHeader::SetNoRetry(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_ACK.

Referenced by ReceiveOk().

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void ns3::MacLow::SendBlockAckAfterBlockAckRequest	(	const CtrlBAckRequestHeader	reqHdr,
		Mac48Address	originator,
		Time	duration,
		WifiMode	blockAckReqTxMode
	)

private

Definition at line 1788 of file mac-low.cc.

References ns3::BASIC_BLOCK_ACK, ns3::COMPRESSED_BLOCK_ACK, ns3::CtrlBAckRequestHeader::GetStartingSequence(), ns3::CtrlBAckRequestHeader::GetTidInfo(), ns3::CtrlBAckRequestHeader::IsBasic(), ns3::CtrlBAckRequestHeader::IsCompressed(), ns3::CtrlBAckRequestHeader::IsMultiTid(), m_bAckAgreements, m_bAckCaches, NS_ASSERT, NS_FATAL_ERROR, NS_LOG_DEBUG, NS_LOG_FUNCTION, RxCompleteBufferedPacketsUntilFirstLost(), RxCompleteBufferedPacketsWithSmallerSequence(), SendBlockAckResponse(), ns3::CtrlBAckResponseHeader::SetStartingSequence(), ns3::CtrlBAckResponseHeader::SetTidInfo(), and ns3::CtrlBAckResponseHeader::SetType().

Referenced by ReceiveOk().

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void ns3::MacLow::SendBlockAckResponse	(	const CtrlBAckResponseHeader *	blockAck,
		Mac48Address	originator,
		bool	immediate,
		Time	duration,
		WifiMode	blockAckReqTxMode
	)

private

Definition at line 1732 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddTrailer(), ns3::BASIC_BLOCK_ACK, ns3::COMPRESSED_BLOCK_ACK, ns3::MacLowTransmissionParameters::DisableAck(), ns3::MacLowTransmissionParameters::DisableNextData(), ns3::MacLowTransmissionParameters::EnableAck(), ForwardDown(), GetAckDuration(), GetAddress(), GetBlockAckDuration(), GetSifs(), ns3::CtrlBAckResponseHeader::IsBasic(), ns3::CtrlBAckResponseHeader::IsCompressed(), ns3::CtrlBAckResponseHeader::IsMultiTid(), m_currentHdr, m_currentPacket, m_txParams, ns3::MicroSeconds(), NS_ASSERT, NS_FATAL_ERROR, ns3::WifiMacHeader::SetAddr1(), ns3::WifiMacHeader::SetAddr2(), ns3::WifiMacHeader::SetDsNotFrom(), ns3::WifiMacHeader::SetDsNotTo(), ns3::WifiMacHeader::SetDuration(), ns3::WifiMacHeader::SetNoMoreFragments(), ns3::WifiMacHeader::SetNoRetry(), ns3::WifiMacHeader::SetType(), StartDataTxTimers(), and ns3::WIFI_MAC_CTL_BACKRESP.

Referenced by SendBlockAckAfterBlockAckRequest().

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void ns3::MacLow::SendCtsAfterRts	(	Mac48Address	source,
		Time	duration,
		WifiMode	txMode,
		double	rtsSnr
	)

private

Definition at line 1432 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddPacketTag(), ns3::Packet::AddTrailer(), ForwardDown(), GetCtsDuration(), GetCtsTxModeForRts(), GetSifs(), ns3::MicroSeconds(), NS_ASSERT, NS_LOG_FUNCTION, ns3::SnrTag::Set(), ns3::WifiMacHeader::SetAddr1(), ns3::WifiMacHeader::SetDsNotFrom(), ns3::WifiMacHeader::SetDsNotTo(), ns3::WifiMacHeader::SetDuration(), ns3::WifiMacHeader::SetNoMoreFragments(), ns3::WifiMacHeader::SetNoRetry(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_CTS.

Referenced by ReceiveOk().

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void ns3::MacLow::SendCurrentTxPacket ( void )

private

void ns3::MacLow::SendDataAfterCts	(	Mac48Address	source,
		Time	duration,
		WifiMode	txMode
	)

private

Definition at line 1464 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddTrailer(), ns3::WifiPhy::CalculateTxDuration(), ForwardDown(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), GetDataTxMode(), GetSifs(), GetSize(), m_currentHdr, m_currentPacket, m_phy, ns3::MicroSeconds(), NS_ASSERT, NS_LOG_FUNCTION, ns3::Seconds(), ns3::WifiMacHeader::SetDuration(), StartDataTxTimers(), and ns3::WIFI_PREAMBLE_LONG.

Referenced by ReceiveOk().

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void ns3::MacLow::SendDataPacket ( void )

private

Definition at line 1367 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddTrailer(), ns3::BASIC_BLOCK_ACK, ns3::WifiPhy::CalculateTxDuration(), ns3::COMPRESSED_BLOCK_ACK, ForwardDown(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), GetBlockAckDuration(), GetDataTxMode(), ns3::MacLowTransmissionParameters::GetDurationId(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetSifs(), ns3::MacLowTransmissionParameters::HasDurationId(), ns3::MacLowTransmissionParameters::HasNextPacket(), m_currentHdr, m_currentPacket, m_phy, m_txParams, ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), NS_LOG_FUNCTION, ns3::Seconds(), ns3::WifiMacHeader::SetDuration(), StartDataTxTimers(), and ns3::WIFI_PREAMBLE_LONG.

Referenced by StartTransmission().

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void ns3::MacLow::SendRtsForPacket ( void )

private

Definition at line 1268 of file mac-low.cc.

Referenced by StartTransmission().

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void ns3::MacLow::SetAckTimeout ( Time ackTimeout )

Definition at line 494 of file mac-low.cc.

References m_ackTimeout.

Referenced by ns3::RegularWifiMac::SetAckTimeout().

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void ns3::MacLow::SetAddress ( Mac48Address ad )

Definition at line 489 of file mac-low.cc.

References m_self.

Referenced by ns3::RegularWifiMac::SetAddress().

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void ns3::MacLow::SetBasicBlockAckTimeout ( Time blockAckTimeout )

Definition at line 499 of file mac-low.cc.

References m_basicBlockAckTimeout.

Referenced by ns3::RegularWifiMac::SetBasicBlockAckTimeout().

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void ns3::MacLow::SetBssid ( Mac48Address ad )

Definition at line 529 of file mac-low.cc.

References m_bssid.

Referenced by ns3::RegularWifiMac::SetBssid().

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void ns3::MacLow::SetCompressedBlockAckTimeout ( Time blockAckTimeout )

Definition at line 504 of file mac-low.cc.

References m_compressedBlockAckTimeout.

Referenced by ns3::RegularWifiMac::SetCompressedBlockAckTimeout().

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void ns3::MacLow::SetCtsTimeout ( Time ctsTimeout )

Definition at line 509 of file mac-low.cc.

References m_ctsTimeout.

Referenced by ns3::RegularWifiMac::SetCtsTimeout().

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void ns3::MacLow::SetPhy ( Ptr< WifiPhy > phy )

Definition at line 475 of file mac-low.cc.

References m_phy, ns3::MakeCallback(), ReceiveError(), ReceiveOk(), ns3::WifiPhy::SetReceiveErrorCallback(), ns3::WifiPhy::SetReceiveOkCallback(), and SetupPhyMacLowListener().

Referenced by ns3::RegularWifiMac::SetWifiPhy().

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void ns3::MacLow::SetPifs ( Time pifs )

Definition at line 524 of file mac-low.cc.

References m_pifs.

Referenced by ns3::RegularWifiMac::SetPifs().

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void ns3::MacLow::SetPromisc ( void )

Definition at line 534 of file mac-low.cc.

References m_promisc.

Referenced by ns3::RegularWifiMac::SetPromisc().

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void ns3::MacLow::SetRxCallback ( Callback< void, Ptr< Packet >, const WifiMacHeader * > callback )

Parameters

callback the callback which receives every incoming packet.

This callback typically forwards incoming packets to an instance of ns3::MacRxMiddle.

Definition at line 585 of file mac-low.cc.

References m_rxCallback.

Referenced by ns3::RegularWifiMac::RegularWifiMac().

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void ns3::MacLow::SetSifs ( Time sifs )

Definition at line 514 of file mac-low.cc.

References m_sifs.

Referenced by ns3::RegularWifiMac::SetSifs().

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void ns3::MacLow::SetSlotTime ( Time slotTime )

Definition at line 519 of file mac-low.cc.

References m_slotTime.

Referenced by ns3::RegularWifiMac::SetSlot().

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void ns3::MacLow::SetupPhyMacLowListener ( Ptr< WifiPhy > phy )

private

Definition at line 379 of file mac-low.cc.

References m_phyMacLowListener, and ns3::WifiPhy::RegisterListener().

Referenced by SetPhy().

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void ns3::MacLow::SetWifiRemoteStationManager ( Ptr< WifiRemoteStationManager > manager )

Definition at line 483 of file mac-low.cc.

References m_stationManager.

Referenced by ns3::RegularWifiMac::SetWifiRemoteStationManager().

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void ns3::MacLow::StartDataTxTimers ( void )

private

Definition at line 1315 of file mac-low.cc.

References BlockAckTimeout(), ns3::WifiPhy::CalculateTxDuration(), EndTxNoAck(), FastAckTimeout(), GetAckTimeout(), GetBasicBlockAckTimeout(), GetCompressedBlockAckTimeout(), GetDataTxMode(), GetPifs(), GetSifs(), GetSize(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::EventId::IsExpired(), m_blockAckTimeoutEvent, m_currentHdr, m_currentPacket, m_fastAckTimeoutEvent, m_normalAckTimeoutEvent, m_phy, m_superFastAckTimeoutEvent, m_txParams, m_waitSifsEvent, ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), ns3::MacLowTransmissionParameters::MustWaitFastAck(), ns3::MacLowTransmissionParameters::MustWaitNormalAck(), ns3::MacLowTransmissionParameters::MustWaitSuperFastAck(), NormalAckTimeout(), NotifyAckTimeoutStartNow(), NS_ASSERT, ns3::Simulator::Schedule(), SuperFastAckTimeout(), WaitSifsAfterEndTx(), and ns3::WIFI_PREAMBLE_LONG.

Referenced by SendBlockAckResponse(), SendDataAfterCts(), and SendDataPacket().

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void ns3::MacLow::StartTransmission	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		MacLowTransmissionParameters	parameters,
		MacLowTransmissionListener *	listener
	)

Parameters

packet	packet to send
hdr	802.11 header for packet to send
parameters	the transmission parameters to use for this packet.
listener	listen to transmission events.

Start the transmission of the input packet and notify the listener of transmission events.

Definition at line 597 of file mac-low.cc.

References CancelAllEvents(), ns3::Packet::Copy(), ns3::WifiMacHeader::GetAddr1(), GetSize(), ns3::WifiPhy::IsStateTx(), m_currentHdr, m_currentPacket, m_listener, m_phy, m_txParams, ns3::MacLowTransmissionParameters::MustSendRts(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, SendDataPacket(), and SendRtsForPacket().