ns3::PacketLossCounter Class Reference

A class to count the number of lost packets. More...

#include "packet-loss-counter.h"

Collaboration diagram for ns3::PacketLossCounter:

Public Member Functions
	PacketLossCounter (uint8_t bitmapSize)
	Constructor.
	~PacketLossCounter ()
uint16_t	GetBitMapSize () const
	Return the size of the window used to compute the packet loss.
uint32_t	GetLost () const
	Get the number of lost packets.
void	NotifyReceived (uint32_t seq)
	Record a successfully received packet.
void	SetBitMapSize (uint16_t size)
	Set the size of the window used to compute the packet loss.

Private Member Functions
bool	GetBit (uint32_t seqNum)
	Check if a sequence number in the window has been received.
void	SetBit (uint32_t seqNum, bool val)
	Set a sequence number to a given state.

Private Attributes
uint16_t	m_bitMapSize
	Window size.
uint32_t	m_lastMaxSeqNum
	Last sequence number seen.
uint32_t	m_lost
	Lost packets counter.
uint8_t *	m_receiveBitMap
	Received packets in the window size.

Detailed Description

A class to count the number of lost packets.

This class records the packet lost in a client/server transmission leveraging a sequence number. All the packets outside a given window (i.e., too old with respect to the last sequence number seen) are considered lost,

Definition at line 34 of file packet-loss-counter.h.

Constructor & Destructor Documentation

PacketLossCounter()

ns3::PacketLossCounter::PacketLossCounter

(

uint8_t

bitmapSize

)

Constructor.

Parameters

bitmapSize

The window size. Must be a multiple of 8.

Definition at line 21 of file packet-loss-counter.cc.

References NS_LOG_FUNCTION, and SetBitMapSize().

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~PacketLossCounter()

ns3::PacketLossCounter::~PacketLossCounter

(

)

Definition at line 31 of file packet-loss-counter.cc.

References m_receiveBitMap, and NS_LOG_FUNCTION.

Member Function Documentation

GetBit()

bool ns3::PacketLossCounter::GetBit ( uint32_t seqNum )

private

Check if a sequence number in the window has been received.

Parameters

seqNum

the sequence number.

Returns

false if the packet has not been received.

Definition at line 67 of file packet-loss-counter.cc.

References m_bitMapSize, m_receiveBitMap, and NS_LOG_FUNCTION.

Referenced by NotifyReceived().

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GetBitMapSize()

uint16_t ns3::PacketLossCounter::GetBitMapSize

(

)

const

Return the size of the window used to compute the packet loss.

Returns

the window size.

Definition at line 38 of file packet-loss-counter.cc.

References m_bitMapSize, and NS_LOG_FUNCTION.

Referenced by ns3::UdpServer::GetPacketWindowSize().

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GetLost()

uint32_t ns3::PacketLossCounter::GetLost

(

)

const

Get the number of lost packets.

Returns

the number of lost packets.

Definition at line 60 of file packet-loss-counter.cc.

References m_lost, and NS_LOG_FUNCTION.

Referenced by PacketLossCounterTestCase::DoRun(), and ns3::UdpServer::GetLost().

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NotifyReceived()

void ns3::PacketLossCounter::NotifyReceived

(

uint32_t

seq

)

Record a successfully received packet.

Parameters

seq	the packet sequence number

Definition at line 100 of file packet-loss-counter.cc.

References GetBit(), m_bitMapSize, m_lastMaxSeqNum, m_lost, NS_LOG_FUNCTION, NS_LOG_INFO, and SetBit().

Referenced by PacketLossCounterTestCase::DoRun(), and ns3::UdpServer::HandleRead().

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SetBit()

void ns3::PacketLossCounter::SetBit ( uint32_t seqNum, bool val )

private

Set a sequence number to a given state.

Parameters

seqNum	the sequence number.
val	false if the packet has not been received.

Definition at line 74 of file packet-loss-counter.cc.

References m_bitMapSize, m_receiveBitMap, and NS_LOG_FUNCTION.

Referenced by NotifyReceived().

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SetBitMapSize()

void ns3::PacketLossCounter::SetBitMapSize

(

uint16_t

size

)

Set the size of the window used to compute the packet loss.

Parameters

size	The window size. Must be a multiple of 8.

Definition at line 45 of file packet-loss-counter.cc.

References m_bitMapSize, m_receiveBitMap, NS_ASSERT_MSG, and NS_LOG_FUNCTION.

Referenced by PacketLossCounter(), and ns3::UdpServer::SetPacketWindowSize().

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Member Data Documentation

m_bitMapSize

uint16_t ns3::PacketLossCounter::m_bitMapSize

private

Window size.

Definition at line 80 of file packet-loss-counter.h.

Referenced by GetBit(), GetBitMapSize(), NotifyReceived(), SetBit(), and SetBitMapSize().

m_lastMaxSeqNum

uint32_t ns3::PacketLossCounter::m_lastMaxSeqNum

private

Last sequence number seen.

Definition at line 81 of file packet-loss-counter.h.

Referenced by NotifyReceived().

m_lost

uint32_t ns3::PacketLossCounter::m_lost

private

Lost packets counter.

Definition at line 79 of file packet-loss-counter.h.

Referenced by GetLost(), and NotifyReceived().

m_receiveBitMap

uint8_t* ns3::PacketLossCounter::m_receiveBitMap

private

Received packets in the window size.

Definition at line 82 of file packet-loss-counter.h.

Referenced by ~PacketLossCounter(), GetBit(), SetBit(), and SetBitMapSize().

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

• src/applications/model/packet-loss-counter.h
• src/applications/model/packet-loss-counter.cc