ns3::BlockAckCache Class Reference

BlockAckCache cache. More...

#include "block-ack-cache.h"

Public Member Functions
void	FillBlockAckBitmap (CtrlBAckResponseHeader *blockAckHeader)
	Fill block ack bitmap function. More...
uint16_t	GetWinStart (void) const
	When an A-MPDU is received, the window start may change to a new value depending on the sequence number of the received MPDU (standard11n page 134). More...
void	Init (uint16_t winStart, uint16_t winSize)
	Init function. More...
void	UpdateWithBlockAckReq (uint16_t startingSeq)
	Update with block ack request function. More...
void	UpdateWithMpdu (const WifiMacHeader *hdr)
	Update with MPDU function. More...

Private Member Functions
bool	IsInWindow (uint16_t seq) const
	Is in window function. More...
void	ResetPortionOfBitmap (uint16_t start, uint16_t end)
	Reset portion of bitmap functiion. More...

Private Attributes
uint16_t	m_bitmap [4096]
	bitmap More...
uint16_t	m_winEnd
	window end More...
uint8_t	m_winSize
	window size More...
uint16_t	m_winStart
	window start More...

Detailed Description

BlockAckCache cache.

Definition at line 36 of file block-ack-cache.h.

Member Function Documentation

void ns3::BlockAckCache::FillBlockAckBitmap

(

CtrlBAckResponseHeader *

blockAckHeader

)

Fill block ack bitmap function.

Parameters

blockAckHeader

the block ack bitmap

Definition at line 121 of file block-ack-cache.cc.

References ns3::CtrlBAckResponseHeader::GetStartingSequence(), ns3::CtrlBAckResponseHeader::IsBasic(), ns3::CtrlBAckResponseHeader::IsCompressed(), ns3::CtrlBAckResponseHeader::IsMultiTid(), m_bitmap, m_winSize, NS_FATAL_ERROR, NS_LOG_FUNCTION, and ns3::CtrlBAckResponseHeader::SetReceivedPacket().

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uint16_t ns3::BlockAckCache::GetWinStart

(

void

)

const

When an A-MPDU is received, the window start may change to a new value depending on the sequence number of the received MPDU (standard11n page 134).

This function is used to retrieve this value in order to add it to the BlockAck.

Returns

window start

Definition at line 44 of file block-ack-cache.cc.

References m_winStart.

void ns3::BlockAckCache::Init	(	uint16_t	winStart,
		uint16_t	winSize
	)

Init function.

Parameters

winStart	the window start
winSize	the window size

Definition at line 34 of file block-ack-cache.cc.

References m_bitmap, m_winEnd, m_winSize, m_winStart, and NS_LOG_FUNCTION.

Referenced by ns3::MacLow::CreateBlockAckAgreement().

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bool ns3::BlockAckCache::IsInWindow ( uint16_t  seq ) const

private

Is in window function.

Parameters

seq	the sequence

Returns

true if is in the window

Definition at line 114 of file block-ack-cache.cc.

References m_winSize, m_winStart, and NS_LOG_FUNCTION.

Referenced by UpdateWithBlockAckReq(), and UpdateWithMpdu().

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void ns3::BlockAckCache::ResetPortionOfBitmap ( uint16_t  start, uint16_t  end  )

private

Reset portion of bitmap functiion.

Parameters

start	the starting position
end	the ending position

Definition at line 102 of file block-ack-cache.cc.

References m_bitmap, NS_LOG_FUNCTION, and visualizer.core::start().

Referenced by UpdateWithBlockAckReq(), and UpdateWithMpdu().

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void ns3::BlockAckCache::UpdateWithBlockAckReq

(

uint16_t

startingSeq

)

Update with block ack request function.

Parameters

startingSeq

the starting sequence

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

References IsInWindow(), m_winEnd, m_winSize, m_winStart, NS_LOG_FUNCTION, ns3::QosUtilsIsOldPacket(), ResetPortionOfBitmap(), and WINSIZE_ASSERT.

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void ns3::BlockAckCache::UpdateWithMpdu

(

const WifiMacHeader *

hdr

)

Update with MPDU function.

Parameters

hdr	the wifi MAC header

Definition at line 50 of file block-ack-cache.cc.

References ns3::WifiMacHeader::GetFragmentNumber(), ns3::WifiMacHeader::GetSequenceNumber(), IsInWindow(), m_bitmap, m_winEnd, m_winStart, NS_LOG_FUNCTION, ns3::QosUtilsIsOldPacket(), ResetPortionOfBitmap(), and WINSIZE_ASSERT.

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Member Data Documentation

uint16_t ns3::BlockAckCache::m_bitmap[4096]

private

bitmap

Definition at line 89 of file block-ack-cache.h.

Referenced by FillBlockAckBitmap(), Init(), ResetPortionOfBitmap(), and UpdateWithMpdu().

uint16_t ns3::BlockAckCache::m_winEnd

private

window end

Definition at line 87 of file block-ack-cache.h.

Referenced by Init(), UpdateWithBlockAckReq(), and UpdateWithMpdu().

uint8_t ns3::BlockAckCache::m_winSize

private

window size

Definition at line 86 of file block-ack-cache.h.

Referenced by FillBlockAckBitmap(), Init(), IsInWindow(), and UpdateWithBlockAckReq().

uint16_t ns3::BlockAckCache::m_winStart

private

window start

Definition at line 85 of file block-ack-cache.h.

Referenced by GetWinStart(), Init(), IsInWindow(), UpdateWithBlockAckReq(), and UpdateWithMpdu().

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

• src/wifi/model/block-ack-cache.h
• src/wifi/model/block-ack-cache.cc