TcpVenoTest Class Reference

Testing the additive increase and multiplicative decrease of TcpVeno. More...

Inheritance diagram for TcpVenoTest:

Collaboration diagram for TcpVenoTest:

Public Member Functions
	TcpVenoTest (uint32_t cWnd, uint32_t segmentSize, uint32_t ssThresh, Time rtt, uint32_t segmentsAcked, uint32_t numRtt, const std::string &name)
	Constructor. More...
Public Member Functions inherited from ns3::TestCase
virtual	~TestCase ()
	Destructor. More...
std::string	GetName (void) const

Private Member Functions
void	AdditiveIncrease (Ptr< TcpSocketState > state, uint32_t diff, UintegerValue beta)
	TCP Veno additive increase formula. More...
virtual void	DoRun (void)
	Implementation to actually run this TestCase. More...
uint32_t	MultiplicativeDecrease (uint32_t diff, const UintegerValue &beta, uint32_t bytesInFlight)
	TCP Veno multiplicative decrease formula. More...
void	NewReno_CongestionAvoidance (Ptr< TcpSocketState > state, uint32_t segmentsAcked)
	Mimics the NewReno Congestion Avoidance algorithm. More...
void	NewReno_IncreaseWindow (Ptr< TcpSocketState > state, uint32_t segmentsAcked)
	Mimics the NewReno IncreaseWindow algorithm. More...
uint32_t	NewReno_SlowStart (Ptr< TcpSocketState > state, uint32_t segmentsAcked)
	Mimics the NewReno SlowStart algorithm. More...

Private Attributes
uint32_t	m_cWnd
	Congestion window. More...
bool	m_inc
	Internal flag to increase every other round. More...
uint32_t	m_numRtt
	Number of RTT (i.e., rounds) of the test. More...
Time	m_rtt
	RTT. More...
uint32_t	m_segmentsAcked
	Number of segments ACKed. More...
uint32_t	m_segmentSize
	Segment size. More...
uint32_t	m_ssThresh
	Slow Start Threshold. More...
Ptr< TcpSocketState >	m_state
	TCP socket state. More...

Additional Inherited Members
Public Types inherited from ns3::TestCase
enum	TestDuration { QUICK = 1, EXTENSIVE = 2, TAKES_FOREVER = 3 }
	How long the test takes to execute. More...
Protected Member Functions inherited from ns3::TestCase
	TestCase (std::string name)
	Constructor. More...
void	AddTestCase (TestCase *testCase, TestDuration duration=QUICK)
	Add an individual child TestCase to this test suite. More...
TestCase *	GetParent () const
	Get the parent of this TestCsse. More...
bool	IsStatusFailure (void) const
	Check if any tests failed. More...
bool	IsStatusSuccess (void) const
	Check if all tests passed. More...
void	SetDataDir (std::string directory)
	Set the data directory where reference trace files can be found. More...
void	ReportTestFailure (std::string cond, std::string actual, std::string limit, std::string message, std::string file, int32_t line)
	Log the failure of this TestCase. More...
bool	MustAssertOnFailure (void) const
	Check if this run should assert on failure. More...
bool	MustContinueOnFailure (void) const
	Check if this run should continue on failure. More...
std::string	CreateDataDirFilename (std::string filename)
	Construct the full path to a file in the data directory. More...
std::string	CreateTempDirFilename (std::string filename)
	Construct the full path to a file in a temporary directory. More...

Detailed Description

Testing the additive increase and multiplicative decrease of TcpVeno.

Definition at line 43 of file tcp-veno-test.cc.

Constructor & Destructor Documentation

TcpVenoTest()

TcpVenoTest::TcpVenoTest	(	uint32_t	cWnd,
		uint32_t	segmentSize,
		uint32_t	ssThresh,
		Time	rtt,
		uint32_t	segmentsAcked,
		uint32_t	numRtt,
		const std::string &	name
	)

Constructor.

Parameters

cWnd	Congestion window.
segmentSize	Segment size.
ssThresh	Slow Start Threshold.
rtt	The RTT.
segmentsAcked	Number of segments acked.
numRtt	Number of RTTs (i.e., rounds) in the test.
name	Test description.

Definition at line 117 of file tcp-veno-test.cc.

Member Function Documentation

AdditiveIncrease()

void TcpVenoTest::AdditiveIncrease ( Ptr< TcpSocketState >  state, uint32_t  diff, UintegerValue  beta  )

private

TCP Veno additive increase formula.

Parameters

state	The congestion control state.
diff	The difference between actual and expected throughput.
beta	TCP Veno beta param.

Definition at line 214 of file tcp-veno-test.cc.

References ns3::UintegerValue::Get(), m_cWnd, m_inc, m_ssThresh, NewReno_CongestionAvoidance(), and NewReno_SlowStart().

Referenced by DoRun().

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DoRun()

void TcpVenoTest::DoRun ( void  )

privatevirtual

Implementation to actually run this TestCase.

Subclasses should override this method to conduct their tests.

Implements ns3::TestCase.

Definition at line 136 of file tcp-veno-test.cc.

References AdditiveIncrease(), ns3::TcpVeno::CongestionStateSet(), ns3::TracedValue< T >::Get(), ns3::ObjectBase::GetAttribute(), ns3::Time::GetSeconds(), ns3::TcpVeno::GetSsThresh(), ns3::TcpVeno::IncreaseWindow(), m_cWnd, ns3::TcpSocketState::m_cWnd, ns3::TcpSocketState::m_minRtt, m_numRtt, m_rtt, m_segmentsAcked, m_segmentSize, ns3::TcpSocketState::m_segmentSize, m_ssThresh, ns3::TcpSocketState::m_ssThresh, m_state, ns3::MilliSeconds(), MultiplicativeDecrease(), NewReno_IncreaseWindow(), NS_TEST_ASSERT_MSG_EQ, and ns3::TcpVeno::PktsAcked().

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MultiplicativeDecrease()

uint32_t TcpVenoTest::MultiplicativeDecrease ( uint32_t  diff, const UintegerValue &  beta, uint32_t  bytesInFlight  )

private

TCP Veno multiplicative decrease formula.

Parameters

diff	The difference between actual and expected throughput.
beta	TCP Veno beta param.
bytesInFlight	Bytes in flight.

Returns

The calculated SsThresh.

Definition at line 242 of file tcp-veno-test.cc.

References ns3::UintegerValue::Get(), m_segmentSize, and max.

Referenced by DoRun().

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NewReno_CongestionAvoidance()

void TcpVenoTest::NewReno_CongestionAvoidance ( Ptr< TcpSocketState >  state, uint32_t  segmentsAcked  )

private

Mimics the NewReno Congestion Avoidance algorithm.

Parameters

state	TCP socket state.
segmentsAcked	Number of segments acked.

Definition at line 285 of file tcp-veno-test.cc.

References ns3::TracedValue< T >::Get(), ns3::TcpSocketState::m_cWnd, ns3::TcpSocketState::m_segmentSize, and max.

Referenced by AdditiveIncrease(), and NewReno_IncreaseWindow().

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NewReno_IncreaseWindow()

void TcpVenoTest::NewReno_IncreaseWindow ( Ptr< TcpSocketState >  state, uint32_t  segmentsAcked  )

private

Mimics the NewReno IncreaseWindow algorithm.

Parameters

state	TCP socket state.
segmentsAcked	Number of segments acked.

Definition at line 259 of file tcp-veno-test.cc.

References ns3::TcpSocketState::m_cWnd, ns3::TcpSocketState::m_ssThresh, NewReno_CongestionAvoidance(), and NewReno_SlowStart().

Referenced by DoRun().

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NewReno_SlowStart()

uint32_t TcpVenoTest::NewReno_SlowStart ( Ptr< TcpSocketState >  state, uint32_t  segmentsAcked  )

private

Mimics the NewReno SlowStart algorithm.

Parameters

state	TCP socket state.
segmentsAcked	Number of segments acked.

Returns

The number of segments that could be sent.

Definition at line 273 of file tcp-veno-test.cc.

References ns3::TcpSocketState::m_cWnd, and ns3::TcpSocketState::m_segmentSize.

Referenced by AdditiveIncrease(), and NewReno_IncreaseWindow().

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Member Data Documentation

m_cWnd

uint32_t TcpVenoTest::m_cWnd

private

Congestion window.

Definition at line 107 of file tcp-veno-test.cc.

Referenced by AdditiveIncrease(), and DoRun().

m_inc

bool TcpVenoTest::m_inc

private

Internal flag to increase every other round.

Definition at line 113 of file tcp-veno-test.cc.

Referenced by AdditiveIncrease().

m_numRtt

uint32_t TcpVenoTest::m_numRtt

private

Number of RTT (i.e., rounds) of the test.

Definition at line 112 of file tcp-veno-test.cc.

Referenced by DoRun().

m_rtt

Time TcpVenoTest::m_rtt

private

RTT.

Definition at line 110 of file tcp-veno-test.cc.

Referenced by DoRun().

m_segmentsAcked

uint32_t TcpVenoTest::m_segmentsAcked

private

Number of segments ACKed.

Definition at line 111 of file tcp-veno-test.cc.

Referenced by DoRun().

m_segmentSize

uint32_t TcpVenoTest::m_segmentSize

private

Segment size.

Definition at line 108 of file tcp-veno-test.cc.

Referenced by DoRun(), and MultiplicativeDecrease().

m_ssThresh

uint32_t TcpVenoTest::m_ssThresh

private

Slow Start Threshold.

Definition at line 109 of file tcp-veno-test.cc.

Referenced by AdditiveIncrease(), and DoRun().

m_state

Ptr<TcpSocketState> TcpVenoTest::m_state

private

TCP socket state.

Definition at line 114 of file tcp-veno-test.cc.

Referenced by DoRun().

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

• src/internet/test/tcp-veno-test.cc