IPv6 Extension Fragment. More...

#include "ipv6-extension.h"

Inheritance diagram for ns3::Ipv6ExtensionFragment:

Collaboration diagram for ns3::Ipv6ExtensionFragment:

Classes
class	Fragments
	This class stores the fragments of a packet waiting to be rebuilt. More...

Public Types
typedef std::pair< Ptr< Packet >, Ipv6Header >	Ipv6PayloadHeaderPair
	Pair of a packet and an Ipv6 header.

Public Member Functions
	Ipv6ExtensionFragment ()
	Constructor.

	~Ipv6ExtensionFragment () override
	Destructor.

uint8_t	GetExtensionNumber () const override
	Get the extension number.

void	GetFragments (Ptr< Packet > packet, Ipv6Header ipv6Header, uint32_t fragmentSize, std::list< Ipv6PayloadHeaderPair > &listFragments)
	Fragment a packet.

uint8_t	Process (Ptr< Packet > &packet, uint8_t offset, const Ipv6Header &ipv6Header, Ipv6Address dst, uint8_t *nextHeader, bool &stopProcessing, bool &isDropped, Ipv6L3Protocol::DropReason &dropReason) override
	Process method Called from Ipv6L3Protocol::Receive.

Public Member Functions inherited from ns3::Ipv6Extension
	Ipv6Extension ()
	Constructor.

	~Ipv6Extension () override
	Destructor.

int64_t	AssignStreams (int64_t stream)
	Assign a fixed random variable stream number to the random variables used by this model.

Ptr< Node >	GetNode () const
	Get the node.

virtual uint8_t	ProcessOptions (Ptr< Packet > &packet, uint8_t offset, uint8_t length, const Ipv6Header &ipv6Header, Ipv6Address dst, uint8_t *nextHeader, bool &stopProcessing, bool &isDropped, Ipv6L3Protocol::DropReason &dropReason)
	Process options Called by implementing classes to process the options.

void	SetNode (Ptr< Node > node)
	Set the node.

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

	~Object () override
	Destructor.

void	AggregateObject (Ptr< Object > other)
	Aggregate two Objects together.

void	Dispose ()
	Dispose of this Object.

AggregateIterator	GetAggregateIterator () const
	Get an iterator to the Objects aggregated to this one.

TypeId	GetInstanceTypeId () const override
	Get the most derived TypeId for this Object.

template<typename T >
Ptr< T >	GetObject () const
	Get a pointer to the requested aggregated Object.

template<>
Ptr< Object >	GetObject () const
	Specialization of () for objects of type ns3::Object.

template<typename T >
Ptr< T >	GetObject (TypeId tid) const
	Get a pointer to the requested aggregated Object by TypeId.

template<>
Ptr< Object >	GetObject (TypeId tid) const
	Specialization of (TypeId tid) for objects of type ns3::Object.

void	Initialize ()
	Invoke DoInitialize on all Objects aggregated to this one.

bool	IsInitialized () const
	Check if the object has been initialized.

void	UnidirectionalAggregateObject (Ptr< Object > other)
	Aggregate an Object to another Object.

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

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor.

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

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

void	Ref () const
	Increment the reference count.

void	Unref () const
	Decrement the reference count.

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

void	GetAttribute (std::string name, AttributeValue &value, bool permissive=false) const
	Get the value of an attribute, raising fatal errors if unsuccessful.

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising errors.

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful.

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors.

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context.

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context.

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context.

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context.

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

Static Public Member Functions inherited from ns3::Ipv6Extension
static TypeId	GetTypeId ()
	Get the type identificator.

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

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

Static Public Attributes
static const uint8_t	EXT_NUMBER = 44
	Fragmentation extension number.

Protected Member Functions
void	DoDispose () override
	Dispose this object.

Protected Member Functions inherited from ns3::Object
	Object (const Object &o)
	Copy an Object.

virtual void	DoInitialize ()
	Initialize() implementation.

virtual void	NotifyNewAggregate ()
	Notify all Objects aggregated to this one of a new Object being aggregated.

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes.

virtual void	NotifyConstructionCompleted ()
	Notifier called once the ObjectBase is fully constructed.

Private Types
typedef std::pair< Ipv6Address, uint32_t >	FragmentKey_t
	Key identifying a fragmented packet.

typedef std::list< std::tuple< Time, FragmentKey_t, Ipv6Header > >	FragmentsTimeoutsList_t
	Container for fragment timeouts.

typedef std::list< std::tuple< Time, FragmentKey_t, Ipv6Header > >::iterator	FragmentsTimeoutsListI_t
	Container Iterator for fragment timeouts.

typedef std::map< FragmentKey_t, Ptr< Fragments > >	MapFragments_t
	Container for the packet fragments.

Private Member Functions
void	CancelTimeout ()
	Cancel the timeout event.

Ptr< Packet >	GetPartialPacket () const
	Get the packet parts so far received.

void	HandleFragmentsTimeout (FragmentKey_t key, Ipv6Header ipHeader)
	Process the timeout for packet fragments.

void	HandleTimeout ()
	Handles a fragmented packet timeout.

FragmentsTimeoutsListI_t	SetTimeout (FragmentKey_t key, Ipv6Header ipHeader)
	Set a new timeout "event" for a fragmented packet.

void	SetTimeoutEventId (EventId event)
	Set the Timeout EventId.

Private Attributes
Time	m_fragmentExpirationTimeout
	Expiration timeout.

MapFragments_t	m_fragments
	The hash of fragmented packets.

EventId	m_timeoutEvent
	Event for the next scheduled timeout.

FragmentsTimeoutsList_t	m_timeoutEventList
	Timeout "events" container.

Additional Inherited Members
Protected Attributes inherited from ns3::Ipv6Extension
Ptr< UniformRandomVariable >	m_uvar
	Provides uniform random variables.

Related Symbols inherited from ns3::ObjectBase
static TypeId	GetObjectIid ()
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly.

Detailed Description

IPv6 Extension Fragment.

Definition at line 248 of file ipv6-extension.h.

Member Typedef Documentation

◆ FragmentKey_t

typedef std::pair<Ipv6Address, uint32_t> ns3::Ipv6ExtensionFragment::FragmentKey_t

private

Key identifying a fragmented packet.

Definition at line 316 of file ipv6-extension.h.

◆ FragmentsTimeoutsList_t

typedef std::list<std::tuple<Time, FragmentKey_t, Ipv6Header> > ns3::Ipv6ExtensionFragment::FragmentsTimeoutsList_t

private

Container for fragment timeouts.

Definition at line 321 of file ipv6-extension.h.

◆ FragmentsTimeoutsListI_t

typedef std::list<std::tuple<Time,FragmentKey_t,Ipv6Header>>::iterator ns3::Ipv6ExtensionFragment::FragmentsTimeoutsListI_t

private

Container Iterator for fragment timeouts.

Definition at line 326 of file ipv6-extension.h.

◆ Ipv6PayloadHeaderPair

typedef std::pair<Ptr<Packet>, Ipv6Header> ns3::Ipv6ExtensionFragment::Ipv6PayloadHeaderPair

Pair of a packet and an Ipv6 header.

Definition at line 290 of file ipv6-extension.h.

◆ MapFragments_t

typedef std::map<FragmentKey_t, Ptr<Fragments> > ns3::Ipv6ExtensionFragment::MapFragments_t

private

Container for the packet fragments.

Definition at line 439 of file ipv6-extension.h.

Constructor & Destructor Documentation

◆ Ipv6ExtensionFragment()

ns3::Ipv6ExtensionFragment::Ipv6ExtensionFragment ( )

Constructor.

Definition at line 333 of file ipv6-extension.cc.

◆ ~Ipv6ExtensionFragment()

ns3::Ipv6ExtensionFragment::~Ipv6ExtensionFragment ( )

override

Destructor.

Definition at line 337 of file ipv6-extension.cc.

Member Function Documentation

◆ CancelTimeout()

void ns3::Ipv6ExtensionFragment::CancelTimeout ( )

private

Cancel the timeout event.

◆ DoDispose()

void ns3::Ipv6ExtensionFragment::DoDispose ( )

overrideprotectedvirtual

Dispose this object.

Reimplemented from ns3::Object.

Definition at line 342 of file ipv6-extension.cc.

References ns3::EventId::Cancel(), ns3::Object::DoDispose(), ns3::EventId::IsPending(), m_fragments, m_timeoutEvent, m_timeoutEventList, and NS_LOG_FUNCTION.

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◆ GetExtensionNumber()

uint8_t ns3::Ipv6ExtensionFragment::GetExtensionNumber ( ) const

overridevirtual

Get the extension number.

Returns: extension number

Implements ns3::Ipv6Extension.

Definition at line 361 of file ipv6-extension.cc.

References EXT_NUMBER.

◆ GetFragments()

void ns3::Ipv6ExtensionFragment::GetFragments	(	Ptr< Packet >	packet,
		Ipv6Header	ipv6Header,
		uint32_t	fragmentSize,
		std::list< Ipv6PayloadHeaderPair > &	listFragments )

Fragment a packet.

Parameters

packet	the packet.
ipv6Header	the IPv6 header.
fragmentSize	the maximal size of the fragment (unfragmentable part + fragmentation header + fragmentable part).
listFragments	the list of fragments.

Definition at line 445 of file ipv6-extension.cc.

References ns3::Ipv6ExtensionHeader::GetLength(), ns3::Ipv6ExtensionHeader::GetNextHeader(), ns3::Ipv6Header::GetNextHeader(), ns3::Ipv6Extension::GetNode(), ns3::Object::GetObject(), ns3::Ipv6ExtensionFragmentHeader::GetSerializedSize(), ns3::Ipv6Header::GetSerializedSize(), ns3::Ipv6Header::IPV6_EXT_DESTINATION, ns3::Ipv6Header::IPV6_EXT_FRAGMENTATION, ns3::Ipv6Header::IPV6_EXT_HOP_BY_HOP, ns3::Ipv6Header::IPV6_EXT_ROUTING, ns3::Ipv6Extension::m_uvar, NS_ASSERT, NS_LOG_FUNCTION, ns3::Ipv6ExtensionFragmentHeader::SetIdentification(), ns3::Ipv6ExtensionFragmentHeader::SetMoreFragment(), ns3::Ipv6ExtensionHeader::SetNextHeader(), ns3::Ipv6Header::SetNextHeader(), ns3::Ipv6ExtensionFragmentHeader::SetOffset(), and ns3::Ipv6Header::SetPayloadLength().

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◆ GetPartialPacket()

Ptr< Packet > ns3::Ipv6ExtensionFragment::GetPartialPacket ( ) const

private

Get the packet parts so far received.

Returns: the partial packet

◆ GetTypeId()

TypeId ns3::Ipv6ExtensionFragment::GetTypeId ( )

static

Get the type identificator.

Returns: type identificator

Definition at line 317 of file ipv6-extension.cc.

References m_fragmentExpirationTimeout, ns3::MakeTimeAccessor(), ns3::MakeTimeChecker(), ns3::Seconds(), and ns3::TypeId::SetParent().

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◆ HandleFragmentsTimeout()

void ns3::Ipv6ExtensionFragment::HandleFragmentsTimeout	(	FragmentKey_t	key,
		Ipv6Header	ipHeader )

private

Process the timeout for packet fragments.

Parameters

key	representing the packet fragments
ipHeader	the IP header of the original packet

Definition at line 630 of file ipv6-extension.cc.

References ns3::Ipv6L3Protocol::DROP_FRAGMENT_TIMEOUT, ns3::Ipv6Extension::GetNode(), ns3::Object::GetObject(), ns3::Ipv6Header::GetSource(), ns3::Icmpv6Header::ICMPV6_FRAGTIME, m_fragments, NS_ASSERT_MSG, and NS_LOG_FUNCTION.

Referenced by HandleTimeout().

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◆ HandleTimeout()

void ns3::Ipv6ExtensionFragment::HandleTimeout ( )

private

Handles a fragmented packet timeout.

Definition at line 682 of file ipv6-extension.cc.

References HandleFragmentsTimeout(), HandleTimeout(), m_timeoutEvent, m_timeoutEventList, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Simulator::Schedule().

Referenced by HandleTimeout(), and SetTimeout().

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◆ Process()

uint8_t ns3::Ipv6ExtensionFragment::Process	(	Ptr< Packet > &	packet,
		uint8_t	offset,
		const Ipv6Header &	ipv6Header,
		Ipv6Address	dst,
		uint8_t *	nextHeader,
		bool &	stopProcessing,
		bool &	isDropped,
		Ipv6L3Protocol::DropReason &	dropReason )

overridevirtual

Process method Called from Ipv6L3Protocol::Receive.

Parameters

packet	the packet
offset	the offset of the extension to process
ipv6Header	the IPv6 header of packet received
dst	destination address of the packet received (i.e. us)
nextHeader	the next header
stopProcessing	true if the packet must not be further processed
isDropped	true if the packet must be dropped
dropReason	dropping reason

Returns: the size processed

Implements ns3::Ipv6Extension.

Definition at line 367 of file ipv6-extension.cc.

References ns3::Create(), ns3::Ipv6ExtensionFragmentHeader::GetIdentification(), ns3::Ipv6ExtensionFragmentHeader::GetMoreFragment(), ns3::Ipv6ExtensionHeader::GetNextHeader(), ns3::Ipv6ExtensionFragmentHeader::GetOffset(), ns3::Ipv6Header::GetSource(), m_fragments, m_timeoutEventList, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::Ipv6Header::SetNextHeader(), and SetTimeout().

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◆ SetTimeout()

Ipv6ExtensionFragment::FragmentsTimeoutsListI_t ns3::Ipv6ExtensionFragment::SetTimeout	(	FragmentKey_t	key,
		Ipv6Header	ipHeader )

private

Set a new timeout "event" for a fragmented packet.

Parameters

key	the fragment identification
ipHeader	the IPv6 header of the fragmented packet

Returns: an iterator to the inserted "event"

Definition at line 659 of file ipv6-extension.cc.

References HandleTimeout(), m_fragmentExpirationTimeout, m_timeoutEvent, m_timeoutEventList, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Simulator::Schedule().

Referenced by Process().

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◆ SetTimeoutEventId()

void ns3::Ipv6ExtensionFragment::SetTimeoutEventId ( EventId event )

private

Set the Timeout EventId.

Parameters

event The event.

Member Data Documentation

◆ EXT_NUMBER

const uint8_t ns3::Ipv6ExtensionFragment::EXT_NUMBER = 44

static

Fragmentation extension number.

Definition at line 254 of file ipv6-extension.h.

Referenced by ns3::InternetStackHelper::AssignStreams(), ns3::Ipv6ExtensionAH::GetExtensionNumber(), ns3::Ipv6ExtensionESP::GetExtensionNumber(), GetExtensionNumber(), and ns3::Ipv6ExtensionRouting::GetExtensionNumber().

◆ m_fragmentExpirationTimeout

Time ns3::Ipv6ExtensionFragment::m_fragmentExpirationTimeout

private

Expiration timeout.

Definition at line 461 of file ipv6-extension.h.

Referenced by GetTypeId(), and SetTimeout().

◆ m_fragments

MapFragments_t ns3::Ipv6ExtensionFragment::m_fragments

private

The hash of fragmented packets.

Definition at line 444 of file ipv6-extension.h.

Referenced by DoDispose(), HandleFragmentsTimeout(), and Process().

◆ m_timeoutEvent

EventId ns3::Ipv6ExtensionFragment::m_timeoutEvent

private

Event for the next scheduled timeout.

Definition at line 460 of file ipv6-extension.h.

Referenced by DoDispose(), HandleTimeout(), and SetTimeout().

◆ m_timeoutEventList

FragmentsTimeoutsList_t ns3::Ipv6ExtensionFragment::m_timeoutEventList

private

Timeout "events" container.

Definition at line 459 of file ipv6-extension.h.

Referenced by DoDispose(), HandleTimeout(), Process(), and SetTimeout().

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

src/internet/model/ipv6-extension.h
src/internet/model/ipv6-extension.cc

Classes

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Private Types

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ FragmentKey_t

◆ FragmentsTimeoutsList_t

◆ FragmentsTimeoutsListI_t

◆ Ipv6PayloadHeaderPair

◆ MapFragments_t

Constructor & Destructor Documentation

◆ Ipv6ExtensionFragment()

◆ ~Ipv6ExtensionFragment()

Member Function Documentation

◆ CancelTimeout()

◆ DoDispose()

◆ GetExtensionNumber()

◆ GetFragments()

◆ GetPartialPacket()

◆ GetTypeId()

◆ HandleFragmentsTimeout()

◆ HandleTimeout()

◆ Process()

◆ SetTimeout()

◆ SetTimeoutEventId()

Member Data Documentation

◆ EXT_NUMBER

◆ m_fragmentExpirationTimeout

◆ m_fragments

◆ m_timeoutEvent

◆ m_timeoutEventList