ns3::PacketLossCounter Class Reference

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

#include "packet-loss-counter.h"

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

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

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

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 wit respect to the last sequence number seen) are considered lost,

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

Constructor & Destructor Documentation

ns3::PacketLossCounter::PacketLossCounter

(

uint8_t

bitmapSize

)

Constructor.

Parameters

bitmapSize

The window size. Must be a multiple of 8.

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

References NS_LOG_FUNCTION, and SetBitMapSize().

Here is the call graph for this function:

ns3::PacketLossCounter::~PacketLossCounter

(

)

Definition at line 41 of file packet-loss-counter.cc.

References m_receiveBitMap, and NS_LOG_FUNCTION.

Member Function Documentation

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 77 of file packet-loss-counter.cc.

References m_bitMapSize, m_receiveBitMap, and NS_LOG_FUNCTION.

Referenced by NotifyReceived().

Here is the caller graph for this function:

uint16_t ns3::PacketLossCounter::GetBitMapSize

(

void

)

const

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

Returns

the window size.

Definition at line 48 of file packet-loss-counter.cc.

References m_bitMapSize, and NS_LOG_FUNCTION.

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

Here is the caller graph for this function:

uint32_t ns3::PacketLossCounter::GetLost

(

void

)

const

Get the number of lost packets.

Returns

the number of lost packets.

Definition at line 70 of file packet-loss-counter.cc.

References m_lost, and NS_LOG_FUNCTION.

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

Here is the caller graph for this function:

void ns3::PacketLossCounter::NotifyReceived

(

uint32_t

seq

)

Record a successfully received packet.

Parameters

seq	the packet sequence number

Definition at line 110 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().

Here is the call graph for this function:

Here is the caller graph for this function:

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 84 of file packet-loss-counter.cc.

References m_bitMapSize, m_receiveBitMap, and NS_LOG_FUNCTION.

Referenced by NotifyReceived().

Here is the caller graph for this function:

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 55 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().

Here is the caller graph for this function:

Member Data Documentation

uint16_t ns3::PacketLossCounter::m_bitMapSize

private

Window size.

Definition at line 90 of file packet-loss-counter.h.

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

uint32_t ns3::PacketLossCounter::m_lastMaxSeqNum

private

Last sequence number seen.

Definition at line 91 of file packet-loss-counter.h.

Referenced by NotifyReceived().

uint32_t ns3::PacketLossCounter::m_lost

private

Lost packets counter.

Definition at line 89 of file packet-loss-counter.h.

Referenced by GetLost(), and NotifyReceived().

uint8_t* ns3::PacketLossCounter::m_receiveBitMap

private

Received packets in the window size.

Definition at line 92 of file packet-loss-counter.h.

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

---

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