DSDV routing protocol. More...

#include "dsdv-routing-protocol.h"

Inheritance diagram for ns3::dsdv::RoutingProtocol:

Collaboration diagram for ns3::dsdv::RoutingProtocol:

Public Member Functions
	RoutingProtocol ()
	c-tor

	~RoutingProtocol () override

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

void	DoDispose () override
	Destructor implementation.

bool	GetEnableBufferFlag () const
	Get enable buffer flag.

bool	GetEnableRAFlag () const
	Get enable route aggregation (RA) flag.

bool	GetWSTFlag () const
	Get weighted settling time (WST) flag.

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 input packet.

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	SetEnableBufferFlag (bool f)
	Set enable buffer flag.

void	SetEnableRAFlag (bool f)
	Set enable route aggregation (RA) flag.

void	SetIpv4 (Ptr< Ipv4 > ipv4) override

void	SetWSTFlag (bool f)
	Set weighted settling time (WST) flag.

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.

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.

Static Public Attributes
static const uint32_t	DSDV_PORT = 269
	UDP Port for DSDV control traffic.

Private Member Functions
void	DeferredRouteOutput (Ptr< const Packet > p, const Ipv4Header &header, UnicastForwardCallback ucb, ErrorCallback ecb)
	Queue packet until we find a route.

void	Drop (Ptr< const Packet > packet, const Ipv4Header &header, Socket::SocketErrno err)
	Notify that packet is dropped for some reason.

Ptr< Socket >	FindSocketWithInterfaceAddress (Ipv4InterfaceAddress iface) const
	Find socket with local interface address iface.

Time	GetSettlingTime (Ipv4Address dst)
	Get settlingTime for a destination.

void	LookForQueuedPackets ()
	Look for any queued packets to send them out.

Ptr< Ipv4Route >	LoopbackRoute (const Ipv4Header &header, Ptr< NetDevice > oif) const
	Create loopback route for given header.

void	MergeTriggerPeriodicUpdates ()
	Merge periodic updates.

void	RecvDsdv (Ptr< Socket > socket)
	Receive and process dsdv control packet.

void	Send (Ptr< Ipv4Route > route, Ptr< const Packet > packet, const Ipv4Header &header)
	Send a packet.

void	SendPacketFromQueue (Ipv4Address dst, Ptr< Ipv4Route > route)
	Send packet from queue.

void	SendPeriodicUpdate ()
	Broadcasts the entire routing table for every PeriodicUpdateInterval.

void	SendTriggeredUpdate ()
	Sends trigger update from a node.

void	Start ()
	Start protocol operation.

Private Attributes
bool	EnableBuffering
	Flag that is used to enable or disable buffering.

bool	EnableRouteAggregation
	This is a flag to enable route aggregation.

bool	EnableWST
	Flag that is used to enable or disable Weighted Settling Time.

uint32_t	Holdtimes
	Holdtimes is the multiplicative factor of PeriodicUpdateInterval for which the node waits since the last update before flushing a route from the routing table.

RoutingTable	m_advRoutingTable
	Advertised Routing table for the node.

ErrorCallback	m_ecb
	Error callback for own packets.

Ptr< Ipv4 >	m_ipv4
	IP protocol.

Ptr< NetDevice >	m_lo
	Loopback device used to defer route requests until a route is found.

Ipv4Address	m_mainAddress
	Nodes IP address.

uint32_t	m_maxQueuedPacketsPerDst
	The maximum number of packets that we allow per destination to buffer.

uint32_t	m_maxQueueLen
	The maximum number of packets that we allow a routing protocol to buffer.

Time	m_maxQueueTime
	The maximum period of time that a routing protocol is allowed to buffer a packet for.

Time	m_periodicUpdateInterval
	PeriodicUpdateInterval specifies the periodic time interval between which the a node broadcasts its entire routing table.

Timer	m_periodicUpdateTimer
	Timer to trigger periodic updates from a node.

PacketQueue	m_queue
	A "drop front on full" queue used by the routing layer to buffer packets to which it does not have a route.

Time	m_routeAggregationTime
	Parameter that holds the route aggregation time interval.

RoutingTable	m_routingTable
	Main Routing table for the node.

UnicastForwardCallback	m_scb
	Unicast callback for own packets.

Time	m_settlingTime
	SettlingTime specifies the time for which a node waits before propagating an update.

std::map< Ptr< Socket >, Ipv4InterfaceAddress >	m_socketAddresses
	Raw socket per each IP interface, map socket -> iface address (IP + mask)

Timer	m_triggeredExpireTimer
	Timer used by the trigger updates in case of Weighted Settling Time is used.

Ptr< UniformRandomVariable >	m_uniformRandomVariable
	Provides uniform random variables.

double	m_weightedFactor
	This is the weighted factor to determine the weighted settling time.

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.

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.

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

DSDV routing protocol.

Definition at line 44 of file dsdv-routing-protocol.h.

Constructor & Destructor Documentation

◆ RoutingProtocol()

ns3::dsdv::RoutingProtocol::RoutingProtocol ( )

c-tor

Definition at line 216 of file dsdv-routing-protocol.cc.

References ns3::CreateObject(), and m_uniformRandomVariable.

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◆ ~RoutingProtocol()

ns3::dsdv::RoutingProtocol::~RoutingProtocol ( )

override

Definition at line 225 of file dsdv-routing-protocol.cc.

Member Function Documentation

◆ AssignStreams()

int64_t ns3::dsdv::RoutingProtocol::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 209 of file dsdv-routing-protocol.cc.

References m_uniformRandomVariable, and NS_LOG_FUNCTION.

◆ DeferredRouteOutput()

void ns3::dsdv::RoutingProtocol::DeferredRouteOutput	(	Ptr< const Packet >	p,
		const Ipv4Header &	header,
		UnicastForwardCallback	ucb,
		ErrorCallback	ecb )

private

Queue packet until we find a route.

Parameters

p	the packet to route
header	the Ipv4Header
ucb	the UnicastForwardCallback function
ecb	the ErrorCallback function

Definition at line 360 of file dsdv-routing-protocol.cc.

References ns3::dsdv::PacketQueue::Enqueue(), m_queue, NS_ASSERT, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by RouteInput().

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◆ DoDispose()

void ns3::dsdv::RoutingProtocol::DoDispose ( )

overridevirtual

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 230 of file dsdv-routing-protocol.cc.

References ns3::Object::DoDispose(), m_ipv4, and m_socketAddresses.

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◆ Drop()

void ns3::dsdv::RoutingProtocol::Drop	(	Ptr< const Packet >	packet,
		const Ipv4Header &	header,
		Socket::SocketErrno	err )

private

Notify that packet is dropped for some reason.

Parameters

packet	the dropped packet
header	the IPv4 header
err	the error number

Definition at line 1131 of file dsdv-routing-protocol.cc.

References ns3::Ipv4Header::GetDestination(), m_mainAddress, and NS_LOG_DEBUG.

Referenced by Start().

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◆ FindSocketWithInterfaceAddress()

Ptr< Socket > ns3::dsdv::RoutingProtocol::FindSocketWithInterfaceAddress ( Ipv4InterfaceAddress iface ) const

private

Find socket with local interface address iface.

Parameters

iface the interface

Returns: the socket

Definition at line 1106 of file dsdv-routing-protocol.cc.

References m_socketAddresses.

Referenced by NotifyAddAddress(), NotifyInterfaceDown(), and NotifyRemoveAddress().

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◆ GetEnableBufferFlag()

bool ns3::dsdv::RoutingProtocol::GetEnableBufferFlag ( ) const

Get enable buffer flag.

Returns: the enable buffer flag

Definition at line 179 of file dsdv-routing-protocol.cc.

References EnableBuffering.

Referenced by GetTypeId().

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◆ GetEnableRAFlag()

bool ns3::dsdv::RoutingProtocol::GetEnableRAFlag ( ) const

Get enable route aggregation (RA) flag.

Returns: the enable route aggregation (RA) flag

Definition at line 203 of file dsdv-routing-protocol.cc.

References EnableRouteAggregation.

Referenced by GetTypeId().

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◆ GetSettlingTime()

Time ns3::dsdv::RoutingProtocol::GetSettlingTime ( Ipv4Address dst )

private

Get settlingTime for a destination.

Parameters

dst	- destination address

Returns: settlingTime for the destination if found

Definition at line 1208 of file dsdv-routing-protocol.cc.

References ns3::Time::As(), EnableWST, ns3::dsdv::RoutingTableEntry::GetLifeTime(), ns3::dsdv::RoutingTableEntry::GetSettlingTime(), ns3::dsdv::RoutingTable::LookupRoute(), m_routingTable, m_weightedFactor, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::Time::S, and ns3::Seconds().

Referenced by RecvDsdv().

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◆ GetTypeId()

TypeId ns3::dsdv::RoutingProtocol::GetTypeId ( )

static

Get the type ID.

Returns: the object TypeId

Definition at line 101 of file dsdv-routing-protocol.cc.

References GetEnableBufferFlag(), GetEnableRAFlag(), GetWSTFlag(), Holdtimes, m_maxQueuedPacketsPerDst, m_maxQueueLen, m_maxQueueTime, m_periodicUpdateInterval, m_routeAggregationTime, m_settlingTime, m_weightedFactor, ns3::MakeBooleanAccessor(), ns3::MakeBooleanChecker(), ns3::MakeDoubleAccessor(), ns3::MakeDoubleChecker(), ns3::MakeTimeAccessor(), ns3::MakeTimeChecker(), ns3::MakeUintegerAccessor(), ns3::MakeUintegerChecker(), ns3::Seconds(), SetEnableBufferFlag(), SetEnableRAFlag(), ns3::TypeId::SetParent(), and SetWSTFlag().

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◆ GetWSTFlag()

bool ns3::dsdv::RoutingProtocol::GetWSTFlag ( ) const

Get weighted settling time (WST) flag.

Returns: the weighted settling time (WST) flag

Definition at line 191 of file dsdv-routing-protocol.cc.

References EnableWST.

Referenced by GetTypeId().

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◆ LookForQueuedPackets()

void ns3::dsdv::RoutingProtocol::LookForQueuedPackets ( )

private

Look for any queued packets to send them out.

Definition at line 1138 of file dsdv-routing-protocol.cc.

References ns3::dsdv::PacketQueue::Find(), ns3::dsdv::RoutingTableEntry::GetDestination(), ns3::dsdv::RoutingTableEntry::GetHop(), ns3::dsdv::RoutingTable::GetListOfAllRoutes(), ns3::dsdv::RoutingTableEntry::GetNextHop(), ns3::dsdv::RoutingTableEntry::GetRoute(), ns3::dsdv::RoutingTable::LookupRoute(), m_queue, m_routingTable, NS_ASSERT, NS_LOG_FUNCTION, NS_LOG_LOGIC, and SendPacketFromQueue().

Referenced by RouteOutput().

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◆ LoopbackRoute()

Ptr< Ipv4Route > ns3::dsdv::RoutingProtocol::LoopbackRoute	(	const Ipv4Header &	header,
		Ptr< NetDevice >	oif ) const

private

Create loopback route for given header.

Parameters

header	the IP header
oif	the device

Returns: the route

Definition at line 507 of file dsdv-routing-protocol.cc.

References ns3::Create(), ns3::Ipv4Header::GetDestination(), ns3::Ipv4::GetNetDevice(), m_ipv4, m_lo, m_socketAddresses, NS_ASSERT, and NS_ASSERT_MSG.

Referenced by RouteOutput().

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◆ MergeTriggerPeriodicUpdates()

void ns3::dsdv::RoutingProtocol::MergeTriggerPeriodicUpdates ( )

private

Merge periodic updates.

Definition at line 1235 of file dsdv-routing-protocol.cc.

References ns3::dsdv::RoutingTable::AnyRunningEvent(), ns3::dsdv::RoutingTable::DeleteRoute(), ns3::dsdv::RoutingTableEntry::GetDestination(), ns3::dsdv::RoutingTableEntry::GetEntriesChanged(), ns3::dsdv::RoutingTable::GetListOfAllRoutes(), ns3::dsdv::RoutingTableEntry::GetSeqNo(), m_advRoutingTable, m_routingTable, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::dsdv::RoutingTableEntry::SetEntriesChanged(), ns3::dsdv::RoutingTableEntry::SetFlag(), ns3::dsdv::RoutingTable::Update(), and ns3::dsdv::VALID.

Referenced by SendPeriodicUpdate().

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◆ NotifyAddAddress()

void ns3::dsdv::RoutingProtocol::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 1045 of file dsdv-routing-protocol.cc.

References ns3::dsdv::RoutingTable::AddRoute(), ns3::Socket::CreateSocket(), DSDV_PORT, FindSocketWithInterfaceAddress(), ns3::Ipv4Address::GetAny(), ns3::Ipv4InterfaceAddress::GetBroadcast(), ns3::Ipv4::GetInterfaceForAddress(), ns3::Ipv4InterfaceAddress::GetLocal(), ns3::Simulator::GetMaximumSimulationTime(), ns3::Ipv4::GetNetDevice(), ns3::Object::GetObject(), ns3::UdpSocketFactory::GetTypeId(), m_ipv4, m_routingTable, m_socketAddresses, ns3::MakeCallback(), NS_ASSERT, NS_LOG_FUNCTION, and RecvDsdv().

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◆ NotifyInterfaceDown()

void ns3::dsdv::RoutingProtocol::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 1026 of file dsdv-routing-protocol.cc.

References ns3::dsdv::RoutingTable::Clear(), ns3::dsdv::RoutingTable::DeleteAllRoutesFromInterface(), FindSocketWithInterfaceAddress(), ns3::Ipv4::GetAddress(), ns3::Object::GetObject(), m_advRoutingTable, m_ipv4, m_routingTable, m_socketAddresses, NS_ASSERT, and NS_LOG_LOGIC.

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◆ NotifyInterfaceUp()

void ns3::dsdv::RoutingProtocol::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 990 of file dsdv-routing-protocol.cc.

References ns3::dsdv::RoutingTable::AddRoute(), ns3::Socket::CreateSocket(), DSDV_PORT, ns3::Ipv4::GetAddress(), ns3::Ipv4Address::GetAny(), ns3::Ipv4::GetInterfaceForAddress(), ns3::Ipv4InterfaceAddress::GetLocal(), ns3::Simulator::GetMaximumSimulationTime(), ns3::Ipv4::GetNetDevice(), ns3::Object::GetObject(), ns3::UdpSocketFactory::GetTypeId(), m_ipv4, m_mainAddress, m_routingTable, m_socketAddresses, ns3::MakeCallback(), NS_ASSERT, NS_LOG_FUNCTION, and RecvDsdv().

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◆ NotifyRemoveAddress()

void ns3::dsdv::RoutingProtocol::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 1082 of file dsdv-routing-protocol.cc.

References ns3::Socket::CreateSocket(), DSDV_PORT, FindSocketWithInterfaceAddress(), ns3::Ipv4Address::GetAny(), ns3::Object::GetObject(), ns3::UdpSocketFactory::GetTypeId(), m_ipv4, m_socketAddresses, ns3::MakeCallback(), NS_ASSERT, and RecvDsdv().

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◆ PrintRoutingTable()

void ns3::dsdv::RoutingProtocol::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 242 of file dsdv-routing-protocol.cc.

References ns3::Time::As(), ns3::Object::GetObject(), m_ipv4, m_routingTable, ns3::Now(), and ns3::dsdv::RoutingTable::Print().

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◆ RecvDsdv()

void ns3::dsdv::RoutingProtocol::RecvDsdv ( Ptr< Socket > socket )

private

Receive and process dsdv control packet.

Parameters

socket the socket for receiving dsdv control packets

Definition at line 555 of file dsdv-routing-protocol.cc.

Referenced by NotifyAddAddress(), NotifyInterfaceUp(), and NotifyRemoveAddress().

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◆ RouteInput()

bool ns3::dsdv::RoutingProtocol::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 input packet.

Parameters

p	The packet
header	The IPv4 header
idev	The device
ucb	The unicast forward callback
mcb	The multicast forward callback
lcb	The local deliver callback
ecb	The error callback

Returns: true if successful

Implements ns3::Ipv4RoutingProtocol.

Definition at line 376 of file dsdv-routing-protocol.cc.

References DeferredRouteOutput(), EnableBuffering, ns3::Socket::ERROR_NOROUTETOHOST, ns3::Ipv4InterfaceAddress::GetBroadcast(), ns3::Ipv4Header::GetDestination(), ns3::Ipv4::GetInterfaceForAddress(), ns3::Ipv4::GetInterfaceForDevice(), ns3::Ipv4InterfaceAddress::GetLocal(), ns3::dsdv::RoutingTableEntry::GetNextHop(), ns3::dsdv::RoutingTableEntry::GetRoute(), ns3::Ipv4Header::GetSource(), ns3::Ipv4Header::GetTtl(), ns3::Ipv4Address::IsBroadcast(), ns3::Ipv4::IsDestinationAddress(), ns3::Ipv4::IsForwarding(), ns3::Ipv4Address::IsMulticast(), ns3::Callback< R, UArgs >::IsNull(), ns3::dsdv::RoutingTable::LookupRoute(), m_ipv4, m_lo, m_mainAddress, m_routingTable, m_socketAddresses, NS_ASSERT, NS_LOG_DEBUG, NS_LOG_ERROR, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

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◆ RouteOutput()

Ptr< Ipv4Route > ns3::dsdv::RoutingProtocol::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 268 of file dsdv-routing-protocol.cc.

References ns3::dsdv::RoutingTable::AddRoute(), EnableBuffering, ns3::Socket::ERROR_NOROUTETOHOST, ns3::Socket::ERROR_NOTERROR, ns3::Ipv4Header::GetDestination(), ns3::dsdv::RoutingTableEntry::GetHop(), ns3::Ipv4::GetInterfaceForDevice(), ns3::dsdv::RoutingTableEntry::GetNextHop(), ns3::dsdv::RoutingTableEntry::GetRoute(), LookForQueuedPackets(), ns3::dsdv::RoutingTable::LookupRoute(), LoopbackRoute(), m_advRoutingTable, m_ipv4, m_routingTable, m_socketAddresses, m_uniformRandomVariable, ns3::MicroSeconds(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_LOGIC, ns3::dsdv::RoutingTable::Purge(), ns3::Simulator::Schedule(), and SendTriggeredUpdate().

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◆ Send()

void ns3::dsdv::RoutingProtocol::Send	(	Ptr< Ipv4Route >	route,
		Ptr< const Packet >	packet,
		const Ipv4Header &	header )

private

Send a packet.

Parameters

route	the route
packet	the packet
header	the IPv4 header

Definition at line 1122 of file dsdv-routing-protocol.cc.

References ns3::Ipv4Header::GetDestination(), ns3::Object::GetObject(), ns3::Ipv4Header::GetProtocol(), m_ipv4, and NS_ASSERT.

Referenced by Start().

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◆ SendPacketFromQueue()

void ns3::dsdv::RoutingProtocol::SendPacketFromQueue	(	Ipv4Address	dst,
		Ptr< Ipv4Route >	route )

private

Send packet from queue.

Parameters

dst	- destination address to which we are sending the packet to
route	- route identified for this packet

Definition at line 1174 of file dsdv-routing-protocol.cc.

References ns3::ConstCast(), ns3::dsdv::PacketQueue::Dequeue(), ns3::dsdv::PacketQueue::Find(), ns3::Ipv4::GetInterfaceForDevice(), ns3::dsdv::QueueEntry::GetIpv4Header(), ns3::dsdv::QueueEntry::GetPacket(), ns3::dsdv::PacketQueue::GetSize(), ns3::Ipv4Header::GetTtl(), ns3::dsdv::QueueEntry::GetUnicastForwardCallback(), m_ipv4, m_mainAddress, m_queue, m_uniformRandomVariable, ns3::MilliSeconds(), NS_LOG_DEBUG, ns3::dsdv::DeferredRouteOutputTag::oif, ns3::Simulator::Schedule(), SendPacketFromQueue(), ns3::Ipv4Header::SetSource(), and ns3::Ipv4Header::SetTtl().

Referenced by LookForQueuedPackets(), and SendPacketFromQueue().

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◆ SendPeriodicUpdate()

void ns3::dsdv::RoutingProtocol::SendPeriodicUpdate ( )

private

Broadcasts the entire routing table for every PeriodicUpdateInterval.

Definition at line 890 of file dsdv-routing-protocol.cc.

References ns3::Create(), DSDV_PORT, ns3::Ipv4::GetAddress(), ns3::Ipv4InterfaceAddress::GetBroadcast(), ns3::dsdv::DsdvHeader::GetDst(), ns3::dsdv::DsdvHeader::GetDstSeqno(), ns3::dsdv::DsdvHeader::GetHopCount(), ns3::dsdv::RoutingTable::GetListOfAllRoutes(), ns3::Ipv4InterfaceAddress::GetLocal(), ns3::Ipv4InterfaceAddress::GetMask(), ns3::Ipv4Mask::GetOnes(), ns3::dsdv::RoutingTable::LookupRoute(), m_ipv4, m_mainAddress, m_periodicUpdateInterval, m_periodicUpdateTimer, m_routingTable, m_socketAddresses, m_uniformRandomVariable, MergeTriggerPeriodicUpdates(), ns3::MicroSeconds(), NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::dsdv::RoutingTable::Purge(), ns3::Time::S, ns3::Timer::Schedule(), ns3::dsdv::DsdvHeader::SetDst(), ns3::dsdv::DsdvHeader::SetDstSeqno(), ns3::dsdv::DsdvHeader::SetHopCount(), ns3::dsdv::RoutingTableEntry::SetSeqNo(), and ns3::dsdv::RoutingTable::Update().

Referenced by Start().

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◆ SendTriggeredUpdate()

void ns3::dsdv::RoutingProtocol::SendTriggeredUpdate ( )

private

Sends trigger update from a node.

Definition at line 815 of file dsdv-routing-protocol.cc.

Referenced by RecvDsdv(), and RouteOutput().

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◆ SetEnableBufferFlag()

void ns3::dsdv::RoutingProtocol::SetEnableBufferFlag ( bool f )

Set enable buffer flag.

Parameters

f	The enable buffer flag

Definition at line 173 of file dsdv-routing-protocol.cc.

References EnableBuffering.

Referenced by GetTypeId().

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◆ SetEnableRAFlag()

void ns3::dsdv::RoutingProtocol::SetEnableRAFlag ( bool f )

Set enable route aggregation (RA) flag.

Parameters

f	the enable route aggregation (RA) flag

Definition at line 197 of file dsdv-routing-protocol.cc.

References EnableRouteAggregation.

Referenced by GetTypeId().

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◆ SetIpv4()

void ns3::dsdv::RoutingProtocol::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 964 of file dsdv-routing-protocol.cc.

References ns3::dsdv::RoutingTable::AddRoute(), ns3::Ipv4::GetAddress(), ns3::Ipv4InterfaceAddress::GetLocal(), ns3::Ipv4Address::GetLoopback(), ns3::Simulator::GetMaximumSimulationTime(), ns3::Ipv4::GetNetDevice(), ns3::Ipv4::GetNInterfaces(), ns3::dsdv::INVALID, m_ipv4, m_lo, m_routingTable, NS_ASSERT, ns3::Simulator::ScheduleNow(), ns3::dsdv::RoutingTableEntry::SetEntriesChanged(), ns3::dsdv::RoutingTableEntry::SetFlag(), and Start().

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◆ SetWSTFlag()

void ns3::dsdv::RoutingProtocol::SetWSTFlag ( bool f )

Set weighted settling time (WST) flag.

Parameters

f	the weighted settling time (WST) flag

Definition at line 185 of file dsdv-routing-protocol.cc.

References EnableWST.

Referenced by GetTypeId().

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◆ Start()

void ns3::dsdv::RoutingProtocol::Start ( )

private

Start protocol operation.

Definition at line 254 of file dsdv-routing-protocol.cc.

References Drop(), Holdtimes, m_advRoutingTable, m_ecb, m_maxQueuedPacketsPerDst, m_maxQueueLen, m_maxQueueTime, m_periodicUpdateInterval, m_periodicUpdateTimer, m_queue, m_routingTable, m_scb, m_uniformRandomVariable, ns3::MakeCallback(), ns3::MicroSeconds(), ns3::Timer::Schedule(), Send(), SendPeriodicUpdate(), ns3::Timer::SetFunction(), ns3::dsdv::RoutingTable::Setholddowntime(), ns3::dsdv::PacketQueue::SetMaxPacketsPerDst(), ns3::dsdv::PacketQueue::SetMaxQueueLen(), and ns3::dsdv::PacketQueue::SetQueueTimeout().

Referenced by SetIpv4().

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Member Data Documentation

◆ DSDV_PORT

const uint32_t ns3::dsdv::RoutingProtocol::DSDV_PORT = 269

static

UDP Port for DSDV control traffic.

Definition at line 52 of file dsdv-routing-protocol.h.

Referenced by NotifyAddAddress(), NotifyInterfaceUp(), NotifyRemoveAddress(), SendPeriodicUpdate(), and SendTriggeredUpdate().

◆ EnableBuffering

bool ns3::dsdv::RoutingProtocol::EnableBuffering

private

Flag that is used to enable or disable buffering.

Definition at line 168 of file dsdv-routing-protocol.h.

Referenced by GetEnableBufferFlag(), RouteInput(), RouteOutput(), and SetEnableBufferFlag().

◆ EnableRouteAggregation

bool ns3::dsdv::RoutingProtocol::EnableRouteAggregation

private

This is a flag to enable route aggregation.

Route aggregation will aggregate all routes for 'RouteAggregationTime' from the time an update is received by a node and sends them as a single update .

Definition at line 176 of file dsdv-routing-protocol.h.

Referenced by GetEnableRAFlag(), RecvDsdv(), and SetEnableRAFlag().

◆ EnableWST

bool ns3::dsdv::RoutingProtocol::EnableWST

private

Flag that is used to enable or disable Weighted Settling Time.

Definition at line 170 of file dsdv-routing-protocol.h.

Referenced by GetSettlingTime(), GetWSTFlag(), and SetWSTFlag().

◆ Holdtimes

uint32_t ns3::dsdv::RoutingProtocol::Holdtimes

private

Holdtimes is the multiplicative factor of PeriodicUpdateInterval for which the node waits since the last update before flushing a route from the routing table.

If PeriodicUpdateInterval is 8s and Holdtimes is 3, the node waits for 24s since the last update to flush this route from its routing table.

Definition at line 139 of file dsdv-routing-protocol.h.

Referenced by GetTypeId(), and Start().

◆ m_advRoutingTable

RoutingTable ns3::dsdv::RoutingProtocol::m_advRoutingTable

private

Advertised Routing table for the node.

Definition at line 157 of file dsdv-routing-protocol.h.

Referenced by MergeTriggerPeriodicUpdates(), NotifyInterfaceDown(), RecvDsdv(), RouteOutput(), SendTriggeredUpdate(), and Start().

◆ m_ecb

ErrorCallback ns3::dsdv::RoutingProtocol::m_ecb

private

Error callback for own packets.

Definition at line 182 of file dsdv-routing-protocol.h.

Referenced by Start().

◆ m_ipv4

Ptr<Ipv4> ns3::dsdv::RoutingProtocol::m_ipv4

private

IP protocol.

Definition at line 149 of file dsdv-routing-protocol.h.

Referenced by DoDispose(), LoopbackRoute(), NotifyAddAddress(), NotifyInterfaceDown(), NotifyInterfaceUp(), NotifyRemoveAddress(), PrintRoutingTable(), RecvDsdv(), RouteInput(), RouteOutput(), Send(), SendPacketFromQueue(), SendPeriodicUpdate(), SendTriggeredUpdate(), and SetIpv4().

◆ m_lo

Ptr<NetDevice> ns3::dsdv::RoutingProtocol::m_lo

private

Loopback device used to defer route requests until a route is found.

Definition at line 153 of file dsdv-routing-protocol.h.

Referenced by LoopbackRoute(), RouteInput(), and SetIpv4().

◆ m_mainAddress

Ipv4Address ns3::dsdv::RoutingProtocol::m_mainAddress

private

Nodes IP address.

Definition at line 147 of file dsdv-routing-protocol.h.

Referenced by Drop(), NotifyInterfaceUp(), RecvDsdv(), RouteInput(), SendPacketFromQueue(), SendPeriodicUpdate(), and SendTriggeredUpdate().

◆ m_maxQueuedPacketsPerDst

uint32_t ns3::dsdv::RoutingProtocol::m_maxQueuedPacketsPerDst

private

The maximum number of packets that we allow per destination to buffer.

Definition at line 161 of file dsdv-routing-protocol.h.

Referenced by GetTypeId(), and Start().

◆ m_maxQueueLen

uint32_t ns3::dsdv::RoutingProtocol::m_maxQueueLen

private

The maximum number of packets that we allow a routing protocol to buffer.

Definition at line 159 of file dsdv-routing-protocol.h.

Referenced by GetTypeId(), and Start().

◆ m_maxQueueTime

Time ns3::dsdv::RoutingProtocol::m_maxQueueTime

private

The maximum period of time that a routing protocol is allowed to buffer a packet for.

Definition at line 163 of file dsdv-routing-protocol.h.

Referenced by GetTypeId(), and Start().

◆ m_periodicUpdateInterval

Time ns3::dsdv::RoutingProtocol::m_periodicUpdateInterval

private

PeriodicUpdateInterval specifies the periodic time interval between which the a node broadcasts its entire routing table.

Definition at line 142 of file dsdv-routing-protocol.h.

Referenced by GetTypeId(), SendPeriodicUpdate(), and Start().

◆ m_periodicUpdateTimer

Timer ns3::dsdv::RoutingProtocol::m_periodicUpdateTimer

private

Timer to trigger periodic updates from a node.

Definition at line 255 of file dsdv-routing-protocol.h.

Referenced by RecvDsdv(), SendPeriodicUpdate(), and Start().

◆ m_queue

PacketQueue ns3::dsdv::RoutingProtocol::m_queue

private

A "drop front on full" queue used by the routing layer to buffer packets to which it does not have a route.

Definition at line 166 of file dsdv-routing-protocol.h.

Referenced by DeferredRouteOutput(), LookForQueuedPackets(), SendPacketFromQueue(), and Start().

◆ m_routeAggregationTime

Time ns3::dsdv::RoutingProtocol::m_routeAggregationTime

private

Parameter that holds the route aggregation time interval.

Definition at line 178 of file dsdv-routing-protocol.h.

Referenced by GetTypeId(), and RecvDsdv().

◆ m_routingTable

RoutingTable ns3::dsdv::RoutingProtocol::m_routingTable

private

Main Routing table for the node.

Definition at line 155 of file dsdv-routing-protocol.h.

Referenced by GetSettlingTime(), LookForQueuedPackets(), MergeTriggerPeriodicUpdates(), NotifyAddAddress(), NotifyInterfaceDown(), NotifyInterfaceUp(), PrintRoutingTable(), RecvDsdv(), RouteInput(), RouteOutput(), SendPeriodicUpdate(), SendTriggeredUpdate(), SetIpv4(), and Start().

◆ m_scb

UnicastForwardCallback ns3::dsdv::RoutingProtocol::m_scb

private

Unicast callback for own packets.

Definition at line 180 of file dsdv-routing-protocol.h.

Referenced by Start().

◆ m_settlingTime

Time ns3::dsdv::RoutingProtocol::m_settlingTime

private

SettlingTime specifies the time for which a node waits before propagating an update.

It waits for this time interval in hope of receiving an update with a better metric.

Definition at line 145 of file dsdv-routing-protocol.h.

Referenced by GetTypeId(), and RecvDsdv().

◆ m_socketAddresses

std::map<Ptr<Socket>, Ipv4InterfaceAddress> ns3::dsdv::RoutingProtocol::m_socketAddresses

private

Raw socket per each IP interface, map socket -> iface address (IP + mask)

Definition at line 151 of file dsdv-routing-protocol.h.

Referenced by DoDispose(), FindSocketWithInterfaceAddress(), LoopbackRoute(), NotifyAddAddress(), NotifyInterfaceDown(), NotifyInterfaceUp(), NotifyRemoveAddress(), RecvDsdv(), RouteInput(), RouteOutput(), SendPeriodicUpdate(), and SendTriggeredUpdate().

◆ m_triggeredExpireTimer

Timer ns3::dsdv::RoutingProtocol::m_triggeredExpireTimer

private

Timer used by the trigger updates in case of Weighted Settling Time is used.

Definition at line 257 of file dsdv-routing-protocol.h.

◆ m_uniformRandomVariable

Ptr<UniformRandomVariable> ns3::dsdv::RoutingProtocol::m_uniformRandomVariable

private

Provides uniform random variables.

Definition at line 260 of file dsdv-routing-protocol.h.

Referenced by RoutingProtocol(), AssignStreams(), RecvDsdv(), RouteOutput(), SendPacketFromQueue(), SendPeriodicUpdate(), and Start().

◆ m_weightedFactor

double ns3::dsdv::RoutingProtocol::m_weightedFactor

private

This is the weighted factor to determine the weighted settling time.

Definition at line 172 of file dsdv-routing-protocol.h.

Referenced by GetSettlingTime(), and GetTypeId().

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

src/dsdv/model/dsdv-routing-protocol.h
src/dsdv/model/dsdv-routing-protocol.cc

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ RoutingProtocol()

◆ ~RoutingProtocol()

Member Function Documentation

◆ AssignStreams()

◆ DeferredRouteOutput()

◆ DoDispose()

◆ Drop()

◆ FindSocketWithInterfaceAddress()

◆ GetEnableBufferFlag()

◆ GetEnableRAFlag()

◆ GetSettlingTime()

◆ GetTypeId()

◆ GetWSTFlag()

◆ LookForQueuedPackets()

◆ LoopbackRoute()

◆ MergeTriggerPeriodicUpdates()

◆ NotifyAddAddress()

◆ NotifyInterfaceDown()

◆ NotifyInterfaceUp()

◆ NotifyRemoveAddress()

◆ PrintRoutingTable()

◆ RecvDsdv()

◆ RouteInput()

◆ RouteOutput()

◆ Send()

◆ SendPacketFromQueue()

◆ SendPeriodicUpdate()

◆ SendTriggeredUpdate()

◆ SetEnableBufferFlag()

◆ SetEnableRAFlag()

◆ SetIpv4()

◆ SetWSTFlag()

◆ Start()

Member Data Documentation

◆ DSDV_PORT

◆ EnableBuffering

◆ EnableRouteAggregation

◆ EnableWST

◆ Holdtimes

◆ m_advRoutingTable

◆ m_ecb

◆ m_ipv4

◆ m_lo

◆ m_mainAddress

◆ m_maxQueuedPacketsPerDst

◆ m_maxQueueLen

◆ m_maxQueueTime

◆ m_periodicUpdateInterval

◆ m_periodicUpdateTimer

◆ m_queue

◆ m_routeAggregationTime

◆ m_routingTable

◆ m_scb

◆ m_settlingTime

◆ m_socketAddresses

◆ m_triggeredExpireTimer

◆ m_uniformRandomVariable

◆ m_weightedFactor