This class implements the Path MTU cache, as defined by RFC 1981. More...

#include <ipv6-pmtu-cache.h>

Inheritance diagram for ns3::Ipv6PmtuCache:

Collaboration diagram for ns3::Ipv6PmtuCache:

Public Member Functions
	Ipv6PmtuCache ()
	Constructor. More...

	~Ipv6PmtuCache ()
	Destructor. More...

virtual void	DoDispose ()
	Dispose object. More...

uint32_t	GetPmtu (Ipv6Address dst)
	Gets the known Path MTU for the specific destination. More...

Time	GetPmtuValidityTime () const
	Gets the Path MTU validity time. More...

void	SetPmtu (Ipv6Address dst, uint32_t pmtu)
	Sets the Path MTU for the specific destination. More...

bool	SetPmtuValidityTime (Time validity)
	Sets the Path MTU validity time (minimum is 5 minutes) More...

Public Member Functions inherited from ns3::Object
	Object ()

virtual	~Object ()

void	AggregateObject (Ptr< Object > other)

void	Dispose (void)
	Run the DoDispose methods of this object and all the objects aggregated to it. More...

AggregateIterator	GetAggregateIterator (void) const

virtual TypeId	GetInstanceTypeId (void) const

template<typename T >
Ptr< T >	GetObject (void) const

template<typename T >
Ptr< T >	GetObject (TypeId tid) const

void	Initialize (void)
	This method calls the virtual DoInitialize method on all the objects aggregated to this object. More...

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Constructor. More...

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...

uint32_t	GetReferenceCount (void) const
	Get the reference count of the object. More...

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment. More...

void	Ref (void) const
	Increment the reference count. More...

void	Unref (void) const
	Decrement the reference count. More...

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor. More...

void	GetAttribute (std::string name, AttributeValue &value) const

bool	GetAttributeFailSafe (std::string name, AttributeValue &attribute) const

void	SetAttribute (std::string name, const AttributeValue &value)

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)

Static Public Member Functions
static TypeId	GetTypeId ()
	Get the type ID. More...

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)
	Register this type. More...

Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)
	Noop. More...

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)
	Get the type ID. More...

Private Types
typedef std::map< Ipv6Address, EventId >::iterator	pathMtuTimerIter
	Container of the IPv6 PMTU data (Ipv6 destination address and expiration event). More...

Private Member Functions
void	ClearPmtu (Ipv6Address dst)
	Clears the Path MTU for the specific destination. More...

Private Attributes
std::map< Ipv6Address, uint32_t >	m_pathMtu
	Path MTU table. More...

std::map< Ipv6Address, EventId >	m_pathMtuTimer
	Path MTU Expiration table. More...

Time	m_validityTime
	Path MTU entry validity time. More...

Additional Inherited Members
Protected Member Functions inherited from ns3::Object
	Object (const Object &o)

virtual void	DoInitialize (void)
	This method is called only once by Object::Initialize. More...

virtual void	NotifyNewAggregate (void)
	This method is invoked whenever two sets of objects are aggregated together. More...

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)

virtual void	NotifyConstructionCompleted (void)
	This method is invoked once all member attributes have been initialized. More...

Detailed Description

This class implements the Path MTU cache, as defined by RFC 1981.

Doxygen introspection did not find any typical Config paths.

The Path MTU is stored according to the destination address, and it is cleared upon expiration (default validity time is 10 minutes).

The "infinite lifetime" PMTU entry type is not implemented, since it is useful only in an very limited number of cases. See the RFC for further details.

Attributes

CacheExpiryTime: Validity time for a Path MTU entry. Default is 10 minutes, minimum is 5 minutes.
- Set with class: ns3::TimeValue
- Underlying type: Time +300000000000.0ns:+9223372036854775807.0ns
- Initial value: +600000000000.0ns
- Flags: construct write read

No TraceSources are defined for this type.

Definition at line 46 of file ipv6-pmtu-cache.h.

Member Typedef Documentation

typedef std::map<Ipv6Address, EventId>::iterator ns3::Ipv6PmtuCache::pathMtuTimerIter

private

Container of the IPv6 PMTU data (Ipv6 destination address and expiration event).

Definition at line 114 of file ipv6-pmtu-cache.h.

Constructor & Destructor Documentation

ns3::Ipv6PmtuCache::Ipv6PmtuCache ( )

Constructor.

Definition at line 44 of file ipv6-pmtu-cache.cc.

ns3::Ipv6PmtuCache::~Ipv6PmtuCache ( )

Destructor.

Definition at line 48 of file ipv6-pmtu-cache.cc.

Member Function Documentation

void ns3::Ipv6PmtuCache::ClearPmtu ( Ipv6Address dst )

private

Clears the Path MTU for the specific destination.

Parameters

dst	the destination

Definition at line 107 of file ipv6-pmtu-cache.cc.

References m_pathMtu, m_pathMtuTimer, and NS_LOG_FUNCTION.

Referenced by SetPmtu().

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void ns3::Ipv6PmtuCache::DoDispose ( void )

virtual

Dispose object.

Reimplemented from ns3::Object.

Definition at line 52 of file ipv6-pmtu-cache.cc.

References m_pathMtu, and m_pathMtuTimer.

uint32_t ns3::Ipv6PmtuCache::GetPmtu ( Ipv6Address dst )

Gets the known Path MTU for the specific destination.

Parameters

dst	the destination

Returns: the Path MTU (zero if unknown)

Definition at line 62 of file ipv6-pmtu-cache.cc.

References m_pathMtu, and NS_LOG_FUNCTION.

Time ns3::Ipv6PmtuCache::GetPmtuValidityTime ( ) const

Gets the Path MTU validity time.

Returns: the Path MTU validity time

Definition at line 87 of file ipv6-pmtu-cache.cc.

References m_validityTime, and NS_LOG_FUNCTION.

TypeId ns3::Ipv6PmtuCache::GetTypeId ( void )

static

Get the type ID.

Returns: type ID

Definition at line 31 of file ipv6-pmtu-cache.cc.

References m_validityTime, ns3::MakeTimeChecker(), and ns3::TypeId::SetParent().

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void ns3::Ipv6PmtuCache::SetPmtu	(	Ipv6Address	dst,
		uint32_t	pmtu
	)

Sets the Path MTU for the specific destination.

Parameters

dst	the destination
pmtu	the Path MTU

Definition at line 73 of file ipv6-pmtu-cache.cc.

References ClearPmtu(), m_pathMtu, m_pathMtuTimer, m_validityTime, NS_LOG_FUNCTION, and ns3::Simulator::Schedule().

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bool ns3::Ipv6PmtuCache::SetPmtuValidityTime ( Time validity )

Sets the Path MTU validity time (minimum is 5 minutes)

Parameters

validity the Path MTU validity time

Returns: true if the change was successful

Definition at line 93 of file ipv6-pmtu-cache.cc.

References m_validityTime, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

Member Data Documentation

std::map<Ipv6Address, uint32_t> ns3::Ipv6PmtuCache::m_pathMtu

private

Path MTU table.

Definition at line 109 of file ipv6-pmtu-cache.h.

Referenced by ClearPmtu(), DoDispose(), GetPmtu(), and SetPmtu().

std::map<Ipv6Address, EventId> ns3::Ipv6PmtuCache::m_pathMtuTimer

private

Path MTU Expiration table.

Definition at line 119 of file ipv6-pmtu-cache.h.

Referenced by ClearPmtu(), DoDispose(), and SetPmtu().

Time ns3::Ipv6PmtuCache::m_validityTime

private

Path MTU entry validity time.

Definition at line 124 of file ipv6-pmtu-cache.h.

Referenced by GetPmtuValidityTime(), GetTypeId(), SetPmtu(), and SetPmtuValidityTime().

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

src/internet/model/ipv6-pmtu-cache.h
src/internet/model/ipv6-pmtu-cache.cc

Public Member Functions

Static Public Member Functions

Private Types

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Attributes

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation