This class is a specialization of Ipv4RoutingProtocol that allows other instances of Ipv4RoutingProtocol to be inserted in a prioritized list. More...

#include <ipv4-list-routing.h>

Inheritance diagram for ns3::Ipv4ListRouting:

Collaboration diagram for ns3::Ipv4ListRouting:

Public Member Functions
	Ipv4ListRouting ()

virtual	~Ipv4ListRouting ()

virtual void	AddRoutingProtocol (Ptr< Ipv4RoutingProtocol > routingProtocol, int16_t priority)
	Register a new routing protocol to be used in this IPv4 stack. More...

virtual uint32_t	GetNRoutingProtocols (void) const

virtual Ptr< Ipv4RoutingProtocol >	GetRoutingProtocol (uint32_t index, int16_t &priority) const
	Return pointer to routing protocol stored at index, with the first protocol (index 0) the highest priority, the next one (index 1) the second highest priority, and so on. More...

virtual void	NotifyAddAddress (uint32_t interface, Ipv4InterfaceAddress address)

virtual void	NotifyInterfaceDown (uint32_t interface)

virtual void	NotifyInterfaceUp (uint32_t interface)

virtual void	NotifyRemoveAddress (uint32_t interface, Ipv4InterfaceAddress address)

virtual void	PrintRoutingTable (Ptr< OutputStreamWrapper > stream) const
	Print the Routing Table entries. More...

virtual bool	RouteInput (Ptr< const Packet > p, const Ipv4Header &header, Ptr< const NetDevice > idev, UnicastForwardCallback ucb, MulticastForwardCallback mcb, LocalDeliverCallback lcb, ErrorCallback ecb)
	Route an input packet (to be forwarded or locally delivered) More...

virtual Ptr< Ipv4Route >	RouteOutput (Ptr< Packet > p, const Ipv4Header &header, Ptr< NetDevice > oif, Socket::SocketErrno &sockerr)
	Query routing cache for an existing route, for an outbound packet. More...

virtual void	SetIpv4 (Ptr< Ipv4 > ipv4)

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 of this class. More...

Static Public Member Functions inherited from ns3::Ipv4RoutingProtocol
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...

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

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

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

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...

Private Types
typedef std::pair< int16_t, Ptr< Ipv4RoutingProtocol > >	Ipv4RoutingProtocolEntry
	Container identifying an IPv4 Routing Protocol entry in the list. More...

typedef std::list < Ipv4RoutingProtocolEntry >	Ipv4RoutingProtocolList
	Container of the IPv4 Routing Protocols. More...

Static Private Member Functions
static bool	Compare (const Ipv4RoutingProtocolEntry &a, const Ipv4RoutingProtocolEntry &b)
	Compare two routing protocols. More...

Private Attributes
Ptr< Ipv4 >	m_ipv4
	Ipv4 this protocol is associated with. More...

Ipv4RoutingProtocolList	m_routingProtocols
	List of routing protocols. More...

Additional Inherited Members
Public Types inherited from ns3::Ipv4RoutingProtocol
typedef Callback< void, Ptr < const Packet >, const Ipv4Header &, Socket::SocketErrno >	ErrorCallback
	Callback for routing errors (e.g., no route found) More...

typedef Callback< void, Ptr < const Packet >, const Ipv4Header &, uint32_t >	LocalDeliverCallback
	Callback for packets to be locally delivered. More...

typedef Callback< void, Ptr < Ipv4MulticastRoute >, Ptr < const Packet >, const Ipv4Header & >	MulticastForwardCallback
	Callback for multicast packets to be forwarded. More...

typedef Callback< void, Ptr < Ipv4Route >, Ptr< const Packet >, const Ipv4Header & >	UnicastForwardCallback
	Callback for unicast packets to be forwarded. More...

Detailed Description

This class is a specialization of Ipv4RoutingProtocol that allows other instances of Ipv4RoutingProtocol to be inserted in a prioritized list.

Doxygen introspection did not find any typical Config paths.

Routing protocols in the list are consulted one by one, from highest to lowest priority, until a routing protocol is found that will take the packet (this corresponds to a non-zero return value to RouteOutput, or a return value of true to RouteInput). The order by which routing protocols with the same priority value are consulted is undefined.

No Attributes are defined for this type.
No TraceSources are defined for this type.

Definition at line 45 of file ipv4-list-routing.h.

Member Typedef Documentation

typedef std::pair<int16_t, Ptr<Ipv4RoutingProtocol> > ns3::Ipv4ListRouting::Ipv4RoutingProtocolEntry

private

Container identifying an IPv4 Routing Protocol entry in the list.

Definition at line 102 of file ipv4-list-routing.h.

typedef std::list<Ipv4RoutingProtocolEntry> ns3::Ipv4ListRouting::Ipv4RoutingProtocolList

private

Container of the IPv4 Routing Protocols.

Definition at line 106 of file ipv4-list-routing.h.

Constructor & Destructor Documentation

ns3::Ipv4ListRouting::Ipv4ListRouting ( )

Definition at line 44 of file ipv4-list-routing.cc.

References NS_LOG_FUNCTION.

ns3::Ipv4ListRouting::~Ipv4ListRouting ( )

virtual

Definition at line 50 of file ipv4-list-routing.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

void ns3::Ipv4ListRouting::AddRoutingProtocol	(	Ptr< Ipv4RoutingProtocol >	routingProtocol,
		int16_t	priority
	)

virtual

Register a new routing protocol to be used in this IPv4 stack.

Parameters

routingProtocol	new routing protocol implementation object
priority	priority to give to this routing protocol. Values may range between -32768 and +32767.

Definition at line 252 of file ipv4-list-routing.cc.

References Compare(), m_ipv4, m_routingProtocols, and NS_LOG_FUNCTION.

Referenced by Ipv4ListRoutingNegativeTestCase::DoRun(), and Ipv4ListRoutingPositiveTestCase::DoRun().

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bool ns3::Ipv4ListRouting::Compare	(	const Ipv4RoutingProtocolEntry &	a,
		const Ipv4RoutingProtocolEntry &	b
	)

staticprivate

Compare two routing protocols.

Parameters

a	first object to compare
b	second object to compare

Returns: true if they are the same, false otherwise

Definition at line 292 of file ipv4-list-routing.cc.

References NS_LOG_FUNCTION_NOARGS.

Referenced by AddRoutingProtocol().

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void ns3::Ipv4ListRouting::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 56 of file ipv4-list-routing.cc.

References m_ipv4, m_routingProtocols, and NS_LOG_FUNCTION.

void ns3::Ipv4ListRouting::DoInitialize ( void )

protectedvirtual

This method is called only once by Object::Initialize.

If the user calls Object::Initialize multiple times, DoInitialize is called only the first time.

Subclasses are expected to override this method and chain up to their parent's implementation once they are done. It is safe to call GetObject and AggregateObject from within this method.

Reimplemented from ns3::Object.

Definition at line 88 of file ipv4-list-routing.cc.

References ns3::Object::DoInitialize(), m_routingProtocols, and NS_LOG_FUNCTION.

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uint32_t ns3::Ipv4ListRouting::GetNRoutingProtocols ( void ) const

virtual

Returns: number of routing protocols in the list

Definition at line 264 of file ipv4-list-routing.cc.

References m_routingProtocols, and NS_LOG_FUNCTION.

Referenced by Ipv4ListRoutingNegativeTestCase::DoRun(), Ipv4ListRoutingPositiveTestCase::DoRun(), and main().

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Ptr< Ipv4RoutingProtocol > ns3::Ipv4ListRouting::GetRoutingProtocol	(	uint32_t	index,
		int16_t &	priority
	)		const

virtual

Return pointer to routing protocol stored at index, with the first protocol (index 0) the highest priority, the next one (index 1) the second highest priority, and so on.

The priority parameter is an output parameter and it returns the integer priority of the protocol.

Returns: pointer to routing protocol indexed by

Parameters

index	index of protocol to return
priority	output parameter, set to the priority of the protocol being returned

Definition at line 271 of file ipv4-list-routing.cc.

References m_routingProtocols, NS_FATAL_ERROR, and NS_LOG_FUNCTION.

Referenced by Ipv4ListRoutingNegativeTestCase::DoRun(), Ipv4ListRoutingPositiveTestCase::DoRun(), and main().

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TypeId ns3::Ipv4ListRouting::GetTypeId ( void )

static

Get the type ID of this class.

Returns: type ID

Definition at line 34 of file ipv4-list-routing.cc.

References ns3::TypeId::SetParent().

Referenced by RouteOutput().

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void ns3::Ipv4ListRouting::NotifyAddAddress	(	uint32_t	interface,
		Ipv4InterfaceAddress	address
	)

virtual

Parameters

interface	the index of the interface we are being notified about
address	a new address being added to an interface

Protocols are expected to implement this method to be notified whenever a new address is added to an interface. Typically used to add a 'network route' on an interface. Can be invoked on an up or down interface.

Implements ns3::Ipv4RoutingProtocol.

Definition at line 213 of file ipv4-list-routing.cc.

References m_routingProtocols, and NS_LOG_FUNCTION.

void ns3::Ipv4ListRouting::NotifyInterfaceDown ( uint32_t interface )

virtual

Parameters

interface the index of the interface we are being notified about

Protocols are expected to implement this method to be notified of the state change of an interface in a node.

Implements ns3::Ipv4RoutingProtocol.

Definition at line 201 of file ipv4-list-routing.cc.

References m_routingProtocols, and NS_LOG_FUNCTION.

void ns3::Ipv4ListRouting::NotifyInterfaceUp ( uint32_t interface )

virtual

Parameters

interface the index of the interface we are being notified about

Protocols are expected to implement this method to be notified of the state change of an interface in a node.

Implements ns3::Ipv4RoutingProtocol.

Definition at line 189 of file ipv4-list-routing.cc.

References m_routingProtocols, and NS_LOG_FUNCTION.

void ns3::Ipv4ListRouting::NotifyRemoveAddress	(	uint32_t	interface,
		Ipv4InterfaceAddress	address
	)

virtual

Parameters

interface	the index of the interface we are being notified about
address	a new address being added to an interface

Protocols are expected to implement this method to be notified whenever a new address is removed from an interface. Typically used to remove the 'network route' of an interface. Can be invoked on an up or down interface.

Implements ns3::Ipv4RoutingProtocol.

Definition at line 225 of file ipv4-list-routing.cc.

References m_routingProtocols, and NS_LOG_FUNCTION.

void ns3::Ipv4ListRouting::PrintRoutingTable ( Ptr< OutputStreamWrapper > stream ) const

virtual

Print the Routing Table entries.

Parameters

stream the ostream the Routing table is printed to

Implements ns3::Ipv4RoutingProtocol.

Definition at line 72 of file ipv4-list-routing.cc.

References ns3::Time::GetSeconds(), ns3::OutputStreamWrapper::GetStream(), m_ipv4, m_routingProtocols, ns3::Simulator::Now(), and NS_LOG_FUNCTION.

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bool ns3::Ipv4ListRouting::RouteInput	(	Ptr< const Packet >	p,
		const Ipv4Header &	header,
		Ptr< const NetDevice >	idev,
		UnicastForwardCallback	ucb,
		MulticastForwardCallback	mcb,
		LocalDeliverCallback	lcb,
		ErrorCallback	ecb
	)

virtual

Route an input packet (to be forwarded or locally delivered)

This lookup is used in the forwarding process. The packet is handed over to the Ipv4RoutingProtocol, and will get forwarded onward by one of the callbacks. The Linux equivalent is ip_route_input(). There are four valid outcomes, and a matching callbacks to handle each.

Parameters

p	received packet
header	input parameter used to form a search key for a route
idev	Pointer to ingress network device
ucb	Callback for the case in which the packet is to be forwarded as unicast
mcb	Callback for the case in which the packet is to be forwarded as multicast
lcb	Callback for the case in which the packet is to be locally delivered
ecb	Callback to call if there is an error in forwarding

Returns: true if the Ipv4RoutingProtocol takes responsibility for forwarding or delivering the packet, false otherwise

Implements ns3::Ipv4RoutingProtocol.

Definition at line 128 of file ipv4-list-routing.cc.

References ns3::Packet::Copy(), ns3::Socket::ERROR_NOROUTETOHOST, ns3::Ipv4Header::GetDestination(), ns3::Node::GetId(), ns3::Ipv4Address::IsMulticast(), m_ipv4, m_routingProtocols, NS_ASSERT, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

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Ptr< Ipv4Route > ns3::Ipv4ListRouting::RouteOutput	(	Ptr< Packet >	p,
		const Ipv4Header &	header,
		Ptr< NetDevice >	oif,
		Socket::SocketErrno &	sockerr
	)

virtual

Query routing cache for an existing route, for an outbound packet.

This lookup is used by transport protocols. It does not cause any packet to be forwarded, and is synchronous. Can be used for multicast or unicast. The Linux equivalent is ip_route_output()

The header input parameter may have an uninitialized value for the source address, but the destination address should always be properly set by the caller.

Parameters

p	packet to be routed. Note that this method may modify the packet. Callers may also pass in a null pointer.
header	input parameter (used to form key to search for the route)
oif	Output interface Netdevice. May be zero, or may be bound via socket options to a particular output interface.
sockerr	Output parameter; socket errno