Manages all block ack agreements for an originator station. More...

#include <block-ack-manager.h>

Collaboration diagram for ns3::BlockAckManager:

Classes
struct	Item

Public Member Functions
	BlockAckManager ()
	~BlockAckManager ()
void	CreateAgreement (const MgtAddBaRequestHeader *reqHdr, Mac48Address recipient)
void	DestroyAgreement (Mac48Address recipient, uint8_t tid)
bool	ExistsAgreement (Mac48Address recipient, uint8_t tid) const
bool	ExistsAgreementInState (Mac48Address recipient, uint8_t tid, enum OriginatorBlockAckAgreement::State state) const
uint32_t	GetNBufferedPackets (Mac48Address recipient, uint8_t tid) const
Ptr< const Packet >	GetNextPacket (WifiMacHeader &hdr)
uint32_t	GetNextPacketSize (void) const
uint32_t	GetNRetryNeededPackets (Mac48Address recipient, uint8_t tid) const
uint16_t	GetSeqNumOfNextRetryPacket (Mac48Address recipient, uint8_t tid) const
bool	HasBar (struct Bar &bar)
bool	HasOtherFragments (uint16_t sequenceNumber) const
bool	HasPackets (void) const
void	NotifyAgreementEstablished (Mac48Address recipient, uint8_t tid, uint16_t startingSeq)
void	NotifyAgreementUnsuccessful (Mac48Address recipient, uint8_t tid)
void	NotifyGotBlockAck (const CtrlBAckResponseHeader *blockAck, Mac48Address recipient)
void	NotifyMpduTransmission (Mac48Address recipient, uint8_t tid, uint16_t nextSeqNumber)
void	SetBlockAckInactivityCallback (Callback< void, Mac48Address, uint8_t, bool > callback)
void	SetBlockAckThreshold (uint8_t nPackets)
void	SetBlockAckType (enum BlockAckType bAckType)
void	SetBlockDestinationCallback (Callback< void, Mac48Address, uint8_t > callback)
void	SetMaxPacketDelay (Time maxDelay)
void	SetQueue (Ptr< WifiMacQueue > queue)
void	SetTxMiddle (MacTxMiddle *txMiddle)
void	SetUnblockDestinationCallback (Callback< void, Mac48Address, uint8_t > callback)
void	StorePacket (Ptr< const Packet > packet, const WifiMacHeader &hdr, Time tStamp)
bool	SwitchToBlockAckIfNeeded (Mac48Address recipient, uint8_t tid, uint16_t startingSeq)
void	TearDownBlockAck (Mac48Address recipient, uint8_t tid)
void	UpdateAgreement (const MgtAddBaResponseHeader *respHdr, Mac48Address recipient)

Private Types
typedef std::map< std::pair < Mac48Address, uint8_t > , std::pair < OriginatorBlockAckAgreement, PacketQueue > >	Agreements
typedef std::map< std::pair < Mac48Address, uint8_t > , std::pair < OriginatorBlockAckAgreement, PacketQueue > >::const_iterator	AgreementsCI
typedef std::map< std::pair < Mac48Address, uint8_t > , std::pair < OriginatorBlockAckAgreement, PacketQueue > >::iterator	AgreementsI
typedef std::list< Item >	PacketQueue
typedef std::list< Item > ::const_iterator	PacketQueueCI
typedef std::list< Item >::iterator	PacketQueueI

Private Member Functions
	BlockAckManager (const BlockAckManager &)
void	CleanupBuffers (void)
void	InactivityTimeout (Mac48Address, uint8_t)
BlockAckManager &	operator= (const BlockAckManager &)
Ptr< Packet >	ScheduleBlockAckReqIfNeeded (Mac48Address recipient, uint8_t tid)

Private Attributes
Mac48Address	m_address
Agreements	m_agreements
std::list< Bar >	m_bars
Callback< void, Mac48Address, uint8_t, bool >	m_blockAckInactivityTimeout
uint8_t	m_blockAckThreshold
enum BlockAckType	m_blockAckType
Callback< void, Mac48Address, uint8_t >	m_blockPackets
Time	m_maxDelay
Ptr< WifiMacQueue >	m_queue
std::list< PacketQueueI >	m_retryPackets
MacTxMiddle *	m_txMiddle
Callback< void, Mac48Address, uint8_t >	m_unblockPackets

Detailed Description

Manages all block ack agreements for an originator station.

Definition at line 66 of file block-ack-manager.h.

Member Typedef Documentation

typedef std::map<std::pair<Mac48Address, uint8_t>, std::pair<OriginatorBlockAckAgreement, PacketQueue> > ns3::BlockAckManager::Agreements

private

Definition at line 275 of file block-ack-manager.h.

typedef std::map<std::pair<Mac48Address, uint8_t>, std::pair<OriginatorBlockAckAgreement, PacketQueue> >::const_iterator ns3::BlockAckManager::AgreementsCI

private

Definition at line 279 of file block-ack-manager.h.

typedef std::map<std::pair<Mac48Address, uint8_t>, std::pair<OriginatorBlockAckAgreement, PacketQueue> >::iterator ns3::BlockAckManager::AgreementsI

private

Definition at line 277 of file block-ack-manager.h.

typedef std::list<Item> ns3::BlockAckManager::PacketQueue

private

Definition at line 269 of file block-ack-manager.h.

typedef std::list<Item>::const_iterator ns3::BlockAckManager::PacketQueueCI

private

Definition at line 272 of file block-ack-manager.h.

typedef std::list<Item>::iterator ns3::BlockAckManager::PacketQueueI

private

Definition at line 271 of file block-ack-manager.h.

Constructor & Destructor Documentation

ns3::BlockAckManager::BlockAckManager ( const BlockAckManager & )

private

ns3::BlockAckManager::BlockAckManager ( )

Definition at line 61 of file block-ack-manager.cc.

ns3::BlockAckManager::~BlockAckManager ( )

Definition at line 65 of file block-ack-manager.cc.

References m_agreements, m_queue, and m_retryPackets.

Member Function Documentation

void ns3::BlockAckManager::CleanupBuffers ( void )

private

This method removes packets whose lifetime was exceeded.

Definition at line 571 of file block-ack-manager.cc.

References m_agreements, m_maxDelay, m_retryPackets, and ns3::Now().

Referenced by GetNextPacket().

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void ns3::BlockAckManager::CreateAgreement	(	const MgtAddBaRequestHeader *	reqHdr,
		Mac48Address	recipient
	)

Parameters

reqHdr	Relative Add block ack request (action frame).
recipient	Address of peer station involved in block ack mechanism.

Creates a new block ack agreement in pending state. When a ADDBA response with a successful status code is received, the relative agreement becomes established.

Definition at line 104 of file block-ack-manager.cc.

References ns3::MgtAddBaRequestHeader::GetStartingSequence(), ns3::MgtAddBaRequestHeader::GetTid(), ns3::MgtAddBaRequestHeader::GetTimeout(), ns3::MgtAddBaRequestHeader::IsAmsduSupported(), ns3::MgtAddBaRequestHeader::IsImmediateBlockAck(), m_agreements, m_blockPackets, ns3::OriginatorBlockAckAgreement::PENDING, and ns3::BlockAckAgreement::SetStartingSequence().

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

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void ns3::BlockAckManager::DestroyAgreement	(	Mac48Address	recipient,
		uint8_t	tid
	)

Parameters

recipient	Address of peer station involved in block ack mechanism.
tid	Tid Traffic id of transmitted packet.

Invoked when a recipient reject a block ack agreement or when a Delba frame is Received/Transmitted.

Definition at line 130 of file block-ack-manager.cc.

References m_agreements, m_bars, and m_retryPackets.

Referenced by TearDownBlockAck().

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bool ns3::BlockAckManager::ExistsAgreement	(	Mac48Address	recipient,
		uint8_t	tid
	)		const

Parameters

recipient	Address of peer station involved in block ack mechanism.
tid	Traffic ID.

Checks if a block ack agreement exists with station addressed by recipient for tid tid.

Definition at line 73 of file block-ack-manager.cc.

References m_agreements.

Referenced by GetNBufferedPackets(), GetNRetryNeededPackets(), ns3::EdcaTxopN::NotifyAccessGranted(), and SwitchToBlockAckIfNeeded().

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bool ns3::BlockAckManager::ExistsAgreementInState	(	Mac48Address	recipient,
		uint8_t	tid,
		enum OriginatorBlockAckAgreement::State	state
	)		const

Parameters

recipient	Address of peer station involved in block ack mechanism.
tid	Traffic ID.
state	The state for block ack agreement

Checks if a block ack agreement with a state equals to state exists with station addressed by recipient for tid tid.

Definition at line 79 of file block-ack-manager.cc.

References ns3::OriginatorBlockAckAgreement::ESTABLISHED, ns3::OriginatorBlockAckAgreement::INACTIVE, m_agreements, NS_FATAL_ERROR, ns3::OriginatorBlockAckAgreement::PENDING, and ns3::OriginatorBlockAckAgreement::UNSUCCESSFUL.

Referenced by GetNextPacket(), ns3::EdcaTxopN::GotAddBaResponse(), NotifyGotBlockAck(), SwitchToBlockAckIfNeeded(), and ns3::EdcaTxopN::VerifyBlockAck().

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uint32_t ns3::BlockAckManager::GetNBufferedPackets	(	Mac48Address	recipient,
		uint8_t	tid
	)		const

Parameters

recipient	Address of peer station involved in block ack mechanism.
tid	Traffic ID.

Returns number of packets buffered for a specified agreement. This methods doesn't return number of buffered MPDUs but number of buffered MSDUs.

Definition at line 267 of file block-ack-manager.cc.

References ExistsAgreement(), and m_agreements.

Referenced by SwitchToBlockAckIfNeeded().

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Ptr< const Packet > ns3::BlockAckManager::GetNextPacket ( WifiMacHeader & hdr )

Parameters

hdr	802.11 header of returned packet (if exists).

This methods returns a packet (if exists) indicated as not received in corresponding block ack bitmap.

Definition at line 210 of file block-ack-manager.cc.

References ns3::WifiMacHeader::BLOCK_ACK, CleanupBuffers(), ns3::OriginatorBlockAckAgreement::ESTABLISHED, ExistsAgreementInState(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetQosTid(), ns3::WifiMacHeader::GetSequenceNumber(), m_agreements, m_retryPackets, ns3::WifiMacHeader::NORMAL_ACK, NS_LOG_FUNCTION, NS_LOG_INFO, ns3::WifiMacHeader::SetQosAckPolicy(), ns3::WifiMacHeader::SetRetry(), and SwitchToBlockAckIfNeeded().

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

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uint32_t ns3::BlockAckManager::GetNextPacketSize ( void ) const

Returns size of the next packet that needs retransmission.

Definition at line 559 of file block-ack-manager.cc.

References ns3::Packet::GetSize(), m_retryPackets, and ns3::BlockAckManager::Item::packet.

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uint32_t ns3::BlockAckManager::GetNRetryNeededPackets	(	Mac48Address	recipient,
		uint8_t	tid
	)		const

Parameters

recipient	Address of peer station involved in block ack mechanism.
tid	Traffic ID.

Returns number of packets for a specific agreement that need retransmission. This method doesn't return number of MPDUs that need retransmission but number of MSDUs.

Definition at line 291 of file block-ack-manager.cc.

References ExistsAgreement(), and m_retryPackets.

Referenced by NotifyMpduTransmission(), and ScheduleBlockAckReqIfNeeded().

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uint16_t ns3::BlockAckManager::GetSeqNumOfNextRetryPacket	(	Mac48Address	recipient,
		uint8_t	tid
	)		const

Returns the sequence number of the next retry packet for a specific agreement. If there are no packets that need retransmission for the specified agreement or the agreement doesn't exist the function returns 4096;

Definition at line 639 of file block-ack-manager.cc.

References m_retryPackets.

Referenced by NotifyMpduTransmission().

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bool ns3::BlockAckManager::HasBar ( struct Bar & bar )

Definition at line 249 of file block-ack-manager.cc.

References m_bars.

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

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bool ns3::BlockAckManager::HasOtherFragments ( uint16_t sequenceNumber ) const

Parameters

sequenceNumber Sequence number of the packet which fragment is part of.

Returns true if another fragment with sequence number sequenceNumber is scheduled for retransmission.

Definition at line 544 of file block-ack-manager.cc.

References ns3::WifiMacHeader::GetSequenceNumber(), ns3::BlockAckManager::Item::hdr, and m_retryPackets.

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bool ns3::BlockAckManager::HasPackets ( void ) const

Returns true if there are packets that need of retransmission or at least a BAR is scheduled. Returns false otherwise.

Definition at line 261 of file block-ack-manager.cc.

References m_bars, and m_retryPackets.

Referenced by ns3::EdcaTxopN::NeedsAccess(), ns3::EdcaTxopN::NotifyAccessGranted(), ns3::EdcaTxopN::RestartAccessIfNeeded(), and ns3::EdcaTxopN::StartAccessIfNeeded().

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void ns3::BlockAckManager::InactivityTimeout	(	Mac48Address	recipient,
		uint8_t	tid
	)

private

Definition at line 458 of file block-ack-manager.cc.

References m_blockAckInactivityTimeout.

Referenced by NotifyGotBlockAck(), and UpdateAgreement().

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void ns3::BlockAckManager::NotifyAgreementEstablished	(	Mac48Address	recipient,
		uint8_t	tid,
		uint16_t	startingSeq
	)

Parameters

recipient	Address of peer station involved in block ack mechanism.
tid	Traffic ID of transmitted packet.
startingSeq	starting sequence field

Puts corresponding agreement in established state and updates number of packets and starting sequence field. Invoked typically after a block ack refresh.

Definition at line 464 of file block-ack-manager.cc.

References ns3::OriginatorBlockAckAgreement::ESTABLISHED, m_agreements, NS_ASSERT, and NS_LOG_FUNCTION.

Referenced by SwitchToBlockAckIfNeeded().

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void ns3::BlockAckManager::NotifyAgreementUnsuccessful	(	Mac48Address	recipient,
		uint8_t	tid
	)

Parameters

recipient	Address of peer station involved in block ack mechanism.
tid	Traffic ID of transmitted packet.

Marks an agreement as unsuccessful. This happens if recipient station reject block ack setup by an ADDBAResponse frame with a failure status code. FOr now we assume that every QoS station accepts a block ack setup.

Definition at line 475 of file block-ack-manager.cc.

References m_agreements, NS_ASSERT, NS_LOG_FUNCTION, and ns3::OriginatorBlockAckAgreement::UNSUCCESSFUL.

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

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void ns3::BlockAckManager::NotifyGotBlockAck	(	const CtrlBAckResponseHeader *	blockAck,
		Mac48Address	recipient
	)

Parameters

blockAck	The received block ack frame.
recipient	Sender of block ack frame.

Invoked upon receipt of a block ack frame. Typically, this function, is called by ns3::EdcaTxopN object. Performs a check on which MPDUs, previously sent with ack policy set to Block Ack, were correctly received by the recipient. An acknowledged MPDU is removed from the buffer, retransmitted otherwise.

Definition at line 322 of file block-ack-manager.cc.

References ns3::OriginatorBlockAckAgreement::ESTABLISHED, ExistsAgreementInState(), ns3::MacTxMiddle::GetNextSeqNumberByTidAndAddress(), ns3::CtrlBAckResponseHeader::GetTidInfo(), ns3::OriginatorBlockAckAgreement::INACTIVE, InactivityTimeout(), ns3::CtrlBAckResponseHeader::IsBasic(), ns3::CtrlBAckResponseHeader::IsCompressed(), ns3::CtrlBAckResponseHeader::IsFragmentReceived(), ns3::CtrlBAckResponseHeader::IsMultiTid(), ns3::CtrlBAckResponseHeader::IsPacketReceived(), m_agreements, m_retryPackets, m_txMiddle, ns3::MicroSeconds(), NS_FATAL_ERROR, NS_LOG_FUNCTION, ns3::Simulator::Schedule(), SwitchToBlockAckIfNeeded(), and timeout.

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

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void ns3::BlockAckManager::NotifyMpduTransmission	(	Mac48Address	recipient,
		uint8_t	tid,
		uint16_t	nextSeqNumber
	)

Parameters

recipient	Address of peer station involved in block ack mechanism.
tid	Traffic ID of transmitted packet.
nextSeqNumber	Sequence number of the next packet that would be trasmitted by EdcaTxopN.

This method is typically invoked by ns3::EdcaTxopN object every time that a MPDU with ack policy subfield in Qos Control field set to Block Ack is transmitted. The nextSeqNumber parameter is used to block transmission of packets that are out of bitmap.

Definition at line 487 of file block-ack-manager.cc.

References GetNRetryNeededPackets(), GetSeqNumOfNextRetryPacket(), m_agreements, m_bars, NS_ASSERT, NS_LOG_FUNCTION, and ScheduleBlockAckReqIfNeeded().

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

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

private

Ptr< Packet > ns3::BlockAckManager::ScheduleBlockAckReqIfNeeded	(	Mac48Address	recipient,
		uint8_t	tid
	)

private

Checks if all packets, for which a block ack agreement was established or refreshed, have been transmitted. If yes, adds a pair in m_bAckReqs to indicate that at next channel access a block ack request (for established agreement recipient,tid) is needed.

Definition at line 417 of file block-ack-manager.cc.

References ns3::Packet::AddHeader(), ns3::WifiMacHeader::ADDR1, ns3::BASIC_BLOCK_ACK, ns3::OriginatorBlockAckAgreement::CompleteExchange(), ns3::COMPRESSED_BLOCK_ACK, ns3::WifiMacQueue::GetNPacketsByTidAndAddress(), GetNRetryNeededPackets(), ns3::BlockAckAgreement::GetStartingSequence(), ns3::BlockAckAgreement::GetTid(), m_agreements, m_blockAckType, m_queue, ns3::MULTI_TID_BLOCK_ACK, NS_ASSERT, NS_FATAL_ERROR, NS_LOG_FUNCTION, ns3::CtrlBAckRequestHeader::SetStartingSequence(), ns3::CtrlBAckRequestHeader::SetTidInfo(), and ns3::CtrlBAckRequestHeader::SetType().

Referenced by NotifyMpduTransmission().

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void ns3::BlockAckManager::SetBlockAckInactivityCallback ( Callback< void, Mac48Address, uint8_t, bool > callback )

Definition at line 615 of file block-ack-manager.cc.

References m_blockAckInactivityTimeout.

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

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void ns3::BlockAckManager::SetBlockAckThreshold ( uint8_t nPackets )

Parameters

nPackets Minimum number of packets for use of block ack.

Upon receipt of a block ack frame, if total number of packets (packets in WifiMacQueue and buffered packets) is greater of nPackets, they are transmitted using block ack mechanism.

Definition at line 316 of file block-ack-manager.cc.

References m_blockAckThreshold.

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

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void ns3::BlockAckManager::SetBlockAckType ( enum BlockAckType bAckType )

Parameters

bAckType Type of block ack

See ctrl-headers.h for more details.

Definition at line 411 of file block-ack-manager.cc.

References m_blockAckType.

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

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void ns3::BlockAckManager::SetBlockDestinationCallback ( Callback< void, Mac48Address, uint8_t > callback )

Definition at line 621 of file block-ack-manager.cc.

References m_blockPackets.

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

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void ns3::BlockAckManager::SetMaxPacketDelay ( Time maxDelay )

Parameters

maxDelay Max delay for a buffered packet.

This method is always called by ns3::WifiMacQueue object and sets max delay equals to ns3:WifiMacQueue delay value.

Definition at line 608 of file block-ack-manager.cc.

References m_maxDelay, and NS_LOG_FUNCTION.

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

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void ns3::BlockAckManager::SetQueue ( Ptr< WifiMacQueue > queue )

Parameters

queue The WifiMacQueue object.

Definition at line 513 of file block-ack-manager.cc.

References m_queue.

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

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void ns3::BlockAckManager::SetTxMiddle ( MacTxMiddle * txMiddle )

Definition at line 633 of file block-ack-manager.cc.

References m_txMiddle.

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

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void ns3::BlockAckManager::SetUnblockDestinationCallback ( Callback< void, Mac48Address, uint8_t > callback )

Definition at line 627 of file block-ack-manager.cc.

References m_unblockPackets.

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

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void ns3::BlockAckManager::StorePacket	(	Ptr< const Packet >	packet,
		const WifiMacHeader &	hdr,
		Time	tStamp
	)

Parameters

packet	Packet to store.
hdr	802.11 header for packet.
tStamp	time stamp for packet

Stores packet for a possible future retransmission. Retransmission occurs if the packet, in a block ack frame, is indicated by recipient as not received.

Definition at line 195 of file block-ack-manager.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetQosTid(), ns3::WifiMacHeader::IsQosData(), m_agreements, NS_ASSERT, and NS_LOG_FUNCTION.

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

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bool ns3::BlockAckManager::SwitchToBlockAckIfNeeded	(	Mac48Address	recipient,
		uint8_t	tid,
		uint16_t	startingSeq
	)

Checks if there are in the queue other packets that could be send under block ack. If yes adds these packets in current block ack exchange. However, number of packets exchanged in the current block ack, will not exceed the value of BufferSize in the corresponding OriginatorBlockAckAgreement object.

Definition at line 519 of file block-ack-manager.cc.

References ns3::WifiMacHeader::ADDR1, ExistsAgreement(), ExistsAgreementInState(), GetNBufferedPackets(), ns3::WifiMacQueue::GetNPacketsByTidAndAddress(), m_blockAckThreshold, m_queue, NotifyAgreementEstablished(), NS_ASSERT, NS_LOG_FUNCTION, ns3::OriginatorBlockAckAgreement::PENDING, and ns3::OriginatorBlockAckAgreement::UNSUCCESSFUL.

Referenced by GetNextPacket(), NotifyGotBlockAck(), and ns3::EdcaTxopN::VerifyBlockAck().

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void ns3::BlockAckManager::TearDownBlockAck	(	Mac48Address	recipient,
		uint8_t	tid
	)

Parameters

recipient	Address of station involved in block ack mechanism.
tid	Traffic ID.

This method is invoked by EdcaTxopN object upon receipt of a DELBA frame from recipient. The relative block ack agreement is destroyed.

Definition at line 537 of file block-ack-manager.cc.

References DestroyAgreement(), and NS_LOG_FUNCTION.

Referenced by ns3::EdcaTxopN::GotAck(), and ns3::EdcaTxopN::GotDelBaFrame().

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void ns3::BlockAckManager::UpdateAgreement	(	const MgtAddBaResponseHeader *	respHdr,
		Mac48Address	recipient
	)

Parameters

respHdr	Relative Add block ack response (action frame).
recipient	Address of peer station involved in block ack mechanism.

Invoked upon receipt of a ADDBA response frame from recipient.

Definition at line 163 of file block-ack-manager.cc.

References ns3::OriginatorBlockAckAgreement::ESTABLISHED, ns3::MgtAddBaResponseHeader::GetBufferSize(), ns3::MgtAddBaResponseHeader::GetTid(), ns3::BlockAckAgreement::GetTimeout(), ns3::MgtAddBaResponseHeader::GetTimeout(), InactivityTimeout(), ns3::MgtAddBaResponseHeader::IsAmsduSupported(), ns3::MgtAddBaResponseHeader::IsImmediateBlockAck(), m_agreements, ns3::BlockAckAgreement::m_inactivityEvent, m_unblockPackets, ns3::MicroSeconds(), ns3::Simulator::Schedule(), ns3::BlockAckAgreement::SetAmsduSupport(), ns3::BlockAckAgreement::SetBufferSize(), ns3::BlockAckAgreement::SetDelayedBlockAck(), ns3::BlockAckAgreement::SetImmediateBlockAck(), ns3::OriginatorBlockAckAgreement::SetState(), ns3::BlockAckAgreement::SetTimeout(), and timeout.

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

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Member Data Documentation

Mac48Address ns3::BlockAckManager::m_address

private

Definition at line 311 of file block-ack-manager.h.

Agreements ns3::BlockAckManager::m_agreements

private

This data structure contains, for each block ack agreement (recipient, tid), a set of packets for which an ack by block ack is requested. Every packet or fragment indicated as correctly received in block ack frame is erased from this data structure. Pushed back in retransmission queue otherwise.

Definition at line 298 of file block-ack-manager.h.

Referenced by CleanupBuffers(), CreateAgreement(), DestroyAgreement(), ExistsAgreement(), ExistsAgreementInState(), GetNBufferedPackets(), GetNextPacket(), NotifyAgreementEstablished(), NotifyAgreementUnsuccessful(), NotifyGotBlockAck(), NotifyMpduTransmission(), ScheduleBlockAckReqIfNeeded(), StorePacket(), UpdateAgreement(), and ~BlockAckManager().

std::list<Bar> ns3::BlockAckManager::m_bars

private

Definition at line 305 of file block-ack-manager.h.

Referenced by DestroyAgreement(), HasBar(), HasPackets(), and NotifyMpduTransmission().

Callback<void, Mac48Address, uint8_t, bool> ns3::BlockAckManager::m_blockAckInactivityTimeout

private

Definition at line 313 of file block-ack-manager.h.

Referenced by InactivityTimeout(), and SetBlockAckInactivityCallback().

uint8_t ns3::BlockAckManager::m_blockAckThreshold

private

Definition at line 307 of file block-ack-manager.h.

Referenced by SetBlockAckThreshold(), and SwitchToBlockAckIfNeeded().

enum BlockAckType ns3::BlockAckManager::m_blockAckType

private

Definition at line 308 of file block-ack-manager.h.

Referenced by ScheduleBlockAckReqIfNeeded(), and SetBlockAckType().

Callback<void, Mac48Address, uint8_t> ns3::BlockAckManager::m_blockPackets

private

Definition at line 314 of file block-ack-manager.h.

Referenced by CreateAgreement(), and SetBlockDestinationCallback().

Time ns3::BlockAckManager::m_maxDelay

private

Definition at line 309 of file block-ack-manager.h.

Referenced by CleanupBuffers(), and SetMaxPacketDelay().

Ptr<WifiMacQueue> ns3::BlockAckManager::m_queue

private

Definition at line 312 of file block-ack-manager.h.

Referenced by ScheduleBlockAckReqIfNeeded(), SetQueue(), SwitchToBlockAckIfNeeded(), and ~BlockAckManager().

std::list<PacketQueueI> ns3::BlockAckManager::m_retryPackets

private

This list contains all iterators to stored packets that need to be retransmitted. A packet needs retransmission if it's indicated as not correctly received in a block ack frame.

Definition at line 304 of file block-ack-manager.h.

Referenced by CleanupBuffers(), DestroyAgreement(), GetNextPacket(), GetNextPacketSize(), GetNRetryNeededPackets(), GetSeqNumOfNextRetryPacket(), HasOtherFragments(), HasPackets(), NotifyGotBlockAck(), and ~BlockAckManager().