An implementation of the ARP protocol. More...

#include <arp-l3-protocol.h>

Inheritance diagram for ns3::ArpL3Protocol:

Collaboration diagram for ns3::ArpL3Protocol:

Public Member Functions
	ArpL3Protocol ()

virtual	~ArpL3Protocol ()

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

Ptr< ArpCache >	CreateCache (Ptr< NetDevice > device, Ptr< Ipv4Interface > interface)
	Create an ARP cache for the device/interface. More...

bool	Lookup (Ptr< Packet > p, Ipv4Address destination, Ptr< NetDevice > device, Ptr< ArpCache > cache, Address *hardwareDestination)
	Perform an ARP lookup. More...

void	Receive (Ptr< NetDevice > device, Ptr< const Packet > p, uint16_t protocol, const Address &from, const Address &to, NetDevice::PacketType packetType)
	Receive a packet. More...

void	SetNode (Ptr< Node > node)
	Set the node the ARP L3 protocol is associated with. 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 (void)
	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...

Static Public Attributes
static const uint16_t	PROT_NUMBER = 0x0806
	ARP protocol number (0x0806) More...

Protected Member Functions
virtual void	DoDispose (void)
	This method is called by Object::Dispose or by the object's destructor, whichever comes first. More...

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

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...

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...

Private Types
typedef std::list< Ptr < ArpCache > >	CacheList
	container of the ARP caches More...

Private Member Functions
	ArpL3Protocol (const ArpL3Protocol &o)
	Copy constructor. More...

Ptr< ArpCache >	FindCache (Ptr< NetDevice > device)
	Finds the cache associated with a NetDevice. More...

ArpL3Protocol &	operator= (const ArpL3Protocol &o)
	Copy constructor. More...

void	SendArpReply (Ptr< const ArpCache > cache, Ipv4Address myIp, Ipv4Address toIp, Address toMac)
	Send an ARP reply to an host. More...

void	SendArpRequest (Ptr< const ArpCache >cache, Ipv4Address to)
	Send an ARP request to an host. More...

Private Attributes
CacheList	m_cacheList
	ARP cache container. More...

TracedCallback< Ptr< const Packet > >	m_dropTrace
	trace for packets dropped by ARP More...

Ptr< Node >	m_node
	node the ARP L3 protocol is associated with More...

Ptr< RandomVariableStream >	m_requestJitter
	jitter to de-sync ARP requests More...

Detailed Description

An implementation of the ARP protocol.

Config Paths

ns3::ArpL3Protocol is accessible through the following paths with Config::Set and Config::Connect:

/NodeList/[i]/$ns3::ArpL3Protocol

Attributes

CacheList: The list of ARP caches
- Set with class: ns3::ObjectPtrContainerValue
- Underlying type: ns3::Ptr< ns3::ArpCache>
- Flags: read
RequestJitter: The jitter in ms a node is allowed to wait before sending an ARP request. Some jitter aims to prevent collisions. By default, the model will wait for a duration in ms defined by a uniform random-variable between 0 and RequestJitter
- Set with class: ns3::PointerValue
- Underlying type: ns3::Ptr< ns3::RandomVariableStream>
- Initial value: ns3::UniformRandomVariable[Min=0.0|Max=10.0]
- Flags: construct write read

TraceSources

Drop: Packet dropped because not enough room in pending queue for a specific cache entry.

Definition at line 49 of file arp-l3-protocol.h.

Member Typedef Documentation

typedef std::list<Ptr<ArpCache> > ns3::ArpL3Protocol::CacheList

private

container of the ARP caches

Definition at line 119 of file arp-l3-protocol.h.

Constructor & Destructor Documentation

ns3::ArpL3Protocol::ArpL3Protocol ( )

Definition at line 65 of file arp-l3-protocol.cc.

References NS_LOG_FUNCTION.

ns3::ArpL3Protocol::~ArpL3Protocol ( )

virtual

Definition at line 70 of file arp-l3-protocol.cc.

References NS_LOG_FUNCTION.

ns3::ArpL3Protocol::ArpL3Protocol ( const ArpL3Protocol & o )

private

Copy constructor.

Defined and unimplemented to avoid misuse

Parameters

o

Member Function Documentation

int64_t ns3::ArpL3Protocol::AssignStreams ( int64_t stream )

Assign a fixed random variable stream number to the random variables used by this model.

Return the number of streams (possibly zero) that have been assigned.

Parameters

stream first stream index to use

Returns: the number of stream indices assigned by this model

Definition at line 76 of file arp-l3-protocol.cc.

References m_requestJitter, NS_LOG_FUNCTION, and ns3::RandomVariableStream::SetStream().

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Ptr< ArpCache > ns3::ArpL3Protocol::CreateCache	(	Ptr< NetDevice >	device,
		Ptr< Ipv4Interface >	interface
	)

Create an ARP cache for the device/interface.

Parameters

device	the NetDevice
interface	the Ipv4Interface

Returns: a smart pointer to the ARP cache

Definition at line 126 of file arp-l3-protocol.cc.

References ns3::ArpCache::Flush(), ns3::Object::GetObject(), m_cacheList, m_node, ns3::MakeCallback(), NS_ASSERT, NS_LOG_FUNCTION, SendArpRequest(), and ns3::ArpCache::SetDevice().

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void ns3::ArpL3Protocol::DoDispose ( void )

protectedvirtual

This method is called by Object::Dispose or by the object's destructor, whichever comes first.

Subclasses are expected to implement their real destruction code in an overriden version of this method and chain up to their parent's implementation once they are done. i.e., for simplicity, the destructor of every subclass should be empty and its content should be moved to the associated DoDispose method.

It is safe to call GetObject from within this method.

Reimplemented from ns3::Object.

Definition at line 112 of file arp-l3-protocol.cc.

References ns3::Object::Dispose(), ns3::Object::DoDispose(), m_cacheList, m_node, and NS_LOG_FUNCTION.

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Ptr< ArpCache > ns3::ArpL3Protocol::FindCache ( Ptr< NetDevice > device )

private

Finds the cache associated with a NetDevice.

Parameters

device the NetDevice

Returns: the ARP cache, or null if no cache is found

Definition at line 140 of file arp-l3-protocol.cc.

References m_cacheList, NS_ASSERT, and NS_LOG_FUNCTION.

Referenced by Receive().

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TypeId ns3::ArpL3Protocol::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 44 of file arp-l3-protocol.cc.

References m_cacheList, m_dropTrace, m_requestJitter, ns3::MakeObjectVectorAccessor(), ns3::MakeTraceSourceAccessor(), and ns3::TypeId::SetParent().

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bool ns3::ArpL3Protocol::Lookup	(	Ptr< Packet >	p,
		Ipv4Address	destination,
		Ptr< NetDevice >	device,
		Ptr< ArpCache >	cache,
		Address *	hardwareDestination
	)

Perform an ARP lookup.

Parameters

p	the packet
destination	destination IP address
device	outgoing device
cache	ARP cache
hardwareDestination	filled with the destination MAC address (if the entry exists)

Returns: true if there is a matching ARP Entry

Definition at line 258 of file arp-l3-protocol.cc.

References ns3::ArpCache::Add(), ns3::Node::GetId(), ns3::ArpCache::Entry::GetMacAddress(), ns3::RandomVariableStream::GetValue(), ns3::ArpCache::Entry::IsAlive(), ns3::ArpCache::Entry::IsDead(), ns3::ArpCache::Entry::IsExpired(), ns3::ArpCache::Entry::IsWaitReply(), ns3::ArpCache::Lookup(), m_dropTrace, m_node, m_requestJitter, ns3::ArpCache::Entry::MarkWaitReply(), NS_FATAL_ERROR, NS_LOG_FUNCTION, NS_LOG_LOGIC, ns3::Simulator::Schedule(), SendArpRequest(), and ns3::ArpCache::Entry::UpdateWaitReply().

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void ns3::ArpL3Protocol::NotifyNewAggregate ( void )

protectedvirtual

This method is invoked whenever two sets of objects are aggregated together.

This function must be implemented in the stack that needs to notify other stacks connected to the node of their presence in the node.

It is invoked exactly once for each object in both sets. This method can be overriden by subclasses who wish to be notified of aggregation events. These subclasses must chain up to their base class NotifyNewAggregate method. It is safe to call GetObject and AggregateObject from within this method.

Reimplemented from ns3::Object.

Definition at line 95 of file arp-l3-protocol.cc.

References m_node, ns3::Object::NotifyNewAggregate(), NS_LOG_FUNCTION, and SetNode().

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ArpL3Protocol& ns3::ArpL3Protocol::operator= ( const ArpL3Protocol & o )

private

Copy constructor.

Defined and unimplemented to avoid misuse

Parameters

o

Returns

void ns3::ArpL3Protocol::Receive	(	Ptr< NetDevice >	device,
		Ptr< const Packet >	p,
		uint16_t	protocol,
		const Address &	from,
		const Address &	to,
		NetDevice::PacketType	packetType
	)

Receive a packet.

Parameters

device	the source NetDevice
p	the packet
protocol	the protocol
from	the source address
to	the destination address
packetType	type of packet (i.e., unicast, multicast, etc.)