IPv4 list routing. More...

#include "ipv4-list-routing.h"

Inheritance diagram for ns3::Ipv4ListRouting:

Collaboration diagram for ns3::Ipv4ListRouting:

Public Member Functions
	Ipv4ListRouting ()

	~Ipv4ListRouting () override

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

virtual uint32_t	GetNRoutingProtocols () 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.

void	NotifyAddAddress (uint32_t interface, Ipv4InterfaceAddress address) override

void	NotifyInterfaceDown (uint32_t interface) override

void	NotifyInterfaceUp (uint32_t interface) override

void	NotifyRemoveAddress (uint32_t interface, Ipv4InterfaceAddress address) override

void	PrintRoutingTable (Ptr< OutputStreamWrapper > stream, Time::Unit unit=Time::S) const override
	Print the Routing Table entries.

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

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

void	SetIpv4 (Ptr< Ipv4 > ipv4) override

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 ID of this class.

Static Public Member Functions inherited from ns3::Ipv4RoutingProtocol
static TypeId	GetTypeId ()
	Get the type ID.

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.

Protected Member Functions
void	DoDispose () override
	Destructor implementation.

void	DoInitialize () override
	Initialize() implementation.

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

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< int16_t, Ptr< Ipv4RoutingProtocol > >	Ipv4RoutingProtocolEntry
	Container identifying an IPv4 Routing Protocol entry in the list.

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

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

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

Ipv4RoutingProtocolList	m_routingProtocols
	List of routing protocols.

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)

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

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

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

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

IPv4 list routing.

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

Definition at line 35 of file ipv4-list-routing.h.

Member Typedef Documentation

◆ Ipv4RoutingProtocolEntry

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

private

Container identifying an IPv4 Routing Protocol entry in the list.

Definition at line 101 of file ipv4-list-routing.h.

◆ Ipv4RoutingProtocolList

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

private

Container of the IPv4 Routing Protocols.

Definition at line 105 of file ipv4-list-routing.h.

Constructor & Destructor Documentation

◆ Ipv4ListRouting()

ns3::Ipv4ListRouting::Ipv4ListRouting ( )

Definition at line 33 of file ipv4-list-routing.cc.

References NS_LOG_FUNCTION.

◆ ~Ipv4ListRouting()

ns3::Ipv4ListRouting::~Ipv4ListRouting ( )

override

Definition at line 39 of file ipv4-list-routing.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ AddRoutingProtocol()

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 240 of file ipv4-list-routing.cc.

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

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◆ Compare()

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 281 of file ipv4-list-routing.cc.

References NS_LOG_FUNCTION.

Referenced by AddRoutingProtocol().

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◆ DoDispose()

void ns3::Ipv4ListRouting::DoDispose ( )

overrideprotectedvirtual

Destructor implementation.

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

Subclasses are expected to implement their real destruction code in an overridden 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 45 of file ipv4-list-routing.cc.

References m_ipv4, m_routingProtocols, and NS_LOG_FUNCTION.

◆ DoInitialize()

void ns3::Ipv4ListRouting::DoInitialize ( )

overrideprotectedvirtual

Initialize() implementation.

This method is called only once by Initialize(). If the user calls 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 77 of file ipv4-list-routing.cc.

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

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◆ GetNRoutingProtocols()

uint32_t ns3::Ipv4ListRouting::GetNRoutingProtocols ( ) const

virtual

Returns: number of routing protocols in the list

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

References m_routingProtocols, and NS_LOG_FUNCTION.

◆ GetRoutingProtocol()

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 259 of file ipv4-list-routing.cc.

References m_routingProtocols, NS_FATAL_ERROR, and NS_LOG_FUNCTION.

◆ GetTypeId()

TypeId ns3::Ipv4ListRouting::GetTypeId ( )

static

Get the type ID of this class.

Returns: type ID

Definition at line 24 of file ipv4-list-routing.cc.

References ns3::TypeId::SetParent().

Referenced by RouteOutput().

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◆ NotifyAddAddress()

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

overridevirtual

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 205 of file ipv4-list-routing.cc.

References m_routingProtocols, and NS_LOG_FUNCTION.

◆ NotifyInterfaceDown()

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

overridevirtual

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 194 of file ipv4-list-routing.cc.

References m_routingProtocols, and NS_LOG_FUNCTION.

◆ NotifyInterfaceUp()

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

overridevirtual

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 183 of file ipv4-list-routing.cc.

References m_routingProtocols, and NS_LOG_FUNCTION.

◆ NotifyRemoveAddress()

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

overridevirtual

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 216 of file ipv4-list-routing.cc.

References m_routingProtocols, and NS_LOG_FUNCTION.

◆ PrintRoutingTable()

void ns3::Ipv4ListRouting::PrintRoutingTable	(	Ptr< OutputStreamWrapper >	stream,
		Time::Unit	unit = Time::S ) const

overridevirtual

Print the Routing Table entries.

Parameters

stream	The ostream the Routing table is printed to
unit	The time unit to be used in the report

Implements ns3::Ipv4RoutingProtocol.

Definition at line 61 of file ipv4-list-routing.cc.

References ns3::Time::As(), ns3::Object::GetObject(), m_ipv4, m_routingProtocols, ns3::Now(), and NS_LOG_FUNCTION.

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◆ RouteInput()

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

overridevirtual

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 119 of file ipv4-list-routing.cc.

References ns3::Socket::ERROR_NOROUTETOHOST, ns3::Ipv4Header::GetDestination(), ns3::Node::GetId(), ns3::Ipv4::GetInterfaceForDevice(), ns3::Object::GetObject(), ns3::Ipv4::IsDestinationAddress(), ns3::Ipv4::IsForwarding(), ns3::Ipv4Address::IsMulticast(), m_ipv4, m_routingProtocols, ns3::MakeNullCallback(), NS_ASSERT, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

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◆ RouteOutput()

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

overridevirtual

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

Returns: a code that indicates what happened in the lookup

Implements ns3::Ipv4RoutingProtocol.

Definition at line 90 of file ipv4-list-routing.cc.

References ns3::Socket::ERROR_NOROUTETOHOST, ns3::Socket::ERROR_NOTERROR, ns3::Ipv4Header::GetDestination(), ns3::Ipv4Header::GetSource(), GetTypeId(), m_routingProtocols, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

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◆ SetIpv4()

void ns3::Ipv4ListRouting::SetIpv4 ( Ptr< Ipv4 > ipv4 )

overridevirtual

Parameters

ipv4	the ipv4 object this routing protocol is being associated with

Typically, invoked directly or indirectly from ns3::Ipv4::SetRoutingProtocol

Implements ns3::Ipv4RoutingProtocol.

Definition at line 227 of file ipv4-list-routing.cc.

References m_ipv4, m_routingProtocols, NS_ASSERT, and NS_LOG_FUNCTION.

Member Data Documentation

◆ m_ipv4

Ptr<Ipv4> ns3::Ipv4ListRouting::m_ipv4

private

Ipv4 this protocol is associated with.

Definition at line 115 of file ipv4-list-routing.h.

Referenced by AddRoutingProtocol(), DoDispose(), PrintRoutingTable(), RouteInput(), and SetIpv4().

◆ m_routingProtocols

Ipv4RoutingProtocolList ns3::Ipv4ListRouting::m_routingProtocols

private

List of routing protocols.

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

Referenced by AddRoutingProtocol(), DoDispose(), DoInitialize(), GetNRoutingProtocols(), GetRoutingProtocol(), NotifyAddAddress(), NotifyInterfaceDown(), NotifyInterfaceUp(), NotifyRemoveAddress(), PrintRoutingTable(), RouteInput(), RouteOutput(), and SetIpv4().

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

src/internet/model/ipv4-list-routing.h
src/internet/model/ipv4-list-routing.cc

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Types

Static Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Ipv4RoutingProtocolEntry

◆ Ipv4RoutingProtocolList

Constructor & Destructor Documentation

◆ Ipv4ListRouting()

◆ ~Ipv4ListRouting()

Member Function Documentation

◆ AddRoutingProtocol()

◆ Compare()

◆ DoDispose()

◆ DoInitialize()

◆ GetNRoutingProtocols()

◆ GetRoutingProtocol()

◆ GetTypeId()

◆ NotifyAddAddress()

◆ NotifyInterfaceDown()

◆ NotifyInterfaceUp()

◆ NotifyRemoveAddress()

◆ PrintRoutingTable()

◆ RouteInput()

◆ RouteOutput()

◆ SetIpv4()

Member Data Documentation

◆ m_ipv4

◆ m_routingProtocols