DSR route request queue Since DSR is an on demand routing we queue requests while looking for route. More...

#include <dsr-rcache.h>

Inheritance diagram for ns3::dsr::RouteCache:

Collaboration diagram for ns3::dsr::RouteCache:

Classes
struct	Neighbor
	The following code handles link-layer acks. More...

Public Types
typedef std::list < RouteCacheEntry::IP_VECTOR >	routeVector
	Define the vector of route entries. More...

Public Member Functions
	RouteCache ()

virtual	~RouteCache ()

void	AddArpCache (Ptr< ArpCache >)
	Add ARP cache to be used to allow layer 2 notifications processing. More...

void	AddNeighbor (std::vector< Ipv4Address > nodeList, Ipv4Address ownAddress, Time expire)
	Add to the neighbor list. More...

bool	AddRoute (RouteCacheEntry &rt)
	Add route cache entry if it doesn't yet exist in route cache. More...

bool	AddRoute_Link (RouteCacheEntry::IP_VECTOR nodelist, Ipv4Address node)

uint16_t	CheckUniqueAckId (Ipv4Address nextHop)
	Check for duplicate ids and save new entries if the id is not present in the table. More...

void	Clear ()
	Delete all entries from routing table. More...

void	ClearMac ()
	Remove all entries. More...

void	DelArpCache (Ptr< ArpCache >)
	Don't use given ARP cache any more (interface is down) More...

void	DeleteAllRoutesIncludeLink (Ipv4Address errorSrc, Ipv4Address unreachNode, Ipv4Address node)
	Delete all the routes which includes the link from next hop address that has just been notified as unreachable. More...

bool	DeleteRoute (Ipv4Address dst)
	Delete the route with certain destination address. More...

bool	FindSameRoute (RouteCacheEntry &rt, std::list< RouteCacheEntry > &rtVector)
	Find the same route in the route cache. More...

uint16_t	GetAckSize ()
	Get the ack table size. More...

Time	GetExpireTime (Ipv4Address addr)
	Return expire time for neighbor node with address addr, if exists, else return 0. More...

Callback< void, WifiMacHeader const & >	GetTxErrorCallback () const
	Get callback to ProcessTxError, this callback is trying to use the wifi mac tx error header to notify a link layer drop event, however, it is not fully supported yet. More...

bool	IsLinkCache ()

bool	IsNeighbor (Ipv4Address addr)
	Check that node with address addr is neighbor. More...

Mac48Address	LookupMacAddress (Ipv4Address)
	Find MAC address by IP using list of ARP caches. More...

bool	LookupRoute (Ipv4Address id, RouteCacheEntry &rt)
	Lookup route cache entry with destination address dst. More...

void	Print (std::ostream &os)
	Print route cache. More...

void	PrintRouteVector (std::list< RouteCacheEntry > route)
	Print all the route vector elements from the route list. More...

void	PrintVector (std::vector< Ipv4Address > &vec)
	Print the route vector elements. More...

void	ProcessTxError (WifiMacHeader const &)
	Process layer 2 TX error notification. More...

void	Purge ()
	Delete all outdated entries and invalidate valid entry if Lifetime is expired. More...

void	PurgeLinkNode ()

void	PurgeMac ()
	Remove all expired mac entries. More...

void	RebuildBestRouteTable (Ipv4Address source)
	USE MAXWEIGHT TO REPRESENT MAX; USE BROADCAST ADDRESS TO REPRESENT NULL PRECEEDING ADDRESS. More...

void	RemoveLastEntry (std::list< RouteCacheEntry > &rtVector)
	Remove the aged route cache entries when the route cache is full. More...

void	ScheduleTimer ()
	Schedule m_ntimer. More...

void	SetCacheType (std::string type)
	Dijsktra algorithm to get the best route from m_netGraph and update the m_bestRoutesTable_link when current graph information has changed. More...

void	UpdateNeighbor (std::vector< Ipv4Address > nodeList, Time expire)
	Update expire time for entry with address addr, if it exists, else add new entry. More...

void	UpdateNetGraph ()
	Update the Net Graph for the link and node cache has changed. More...

bool	UpdateRouteEntry (Ipv4Address dst)
	Update route cache entry if it has been recently used and successfully delivered the data packet. More...

void	UseExtends (RouteCacheEntry::IP_VECTOR rt)
	When a link from the Route Cache is used in routing a packet originated or salvaged by that node, the stability metric for each of the two endpoint nodes of that link is incremented by the amount of time since that link was last used. More...

Fields
bool	GetSubRoute () const

void	SetSubRoute (bool subRoute)

uint32_t	GetMaxCacheLen () const

void	SetMaxCacheLen (uint32_t len)

Time	GetCacheTimeout () const

void	SetCacheTimeout (Time t)

uint32_t	GetMaxEntriesEachDst () const

void	SetMaxEntriesEachDst (uint32_t entries)

Time	GetBadLinkLifetime () const

void	SetBadLinkLifetime (Time t)

uint64_t	GetStabilityDecrFactor () const

void	SetStabilityDecrFactor (uint64_t decrFactor)

uint64_t	GetStabilityIncrFactor () const

void	SetStabilityIncrFactor (uint64_t incrFactor)

Time	GetInitStability () const

void	SetInitStability (Time initStability)

Time	GetMinLifeTime () const

void	SetMinLifeTime (Time minLifeTime)

Time	GetUseExtends () const

void	SetUseExtends (Time useExtends)

Handle link failure callback
void	SetCallback (Callback< void, Ipv4Address, uint8_t > cb)

Callback< void, Ipv4Address, uint8_t >	GetCallback () const

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 ()

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...

Public Attributes
std::vector< Ptr< ArpCache > >	m_arp
	list of ARP cached to be used for layer 2 notifications processing More...

Time	m_delay
	This timeout deals with the passive ack. More...

Callback< void, Ipv4Address, uint8_t >	m_handleLinkFailure
	The following code handles link-layer acks. More...

std::vector< Neighbor >	m_nb
	vector of entries More...

Timer	m_ntimer
	Timer for neighbor's list. Schedule Purge(). More...

Callback< void, WifiMacHeader const & >	m_txErrorCallback
	TX error callback. More...

Private Types
typedef std::list < RouteCacheEntry >	routeEntryVector
	Define the route cache data structure. More...

Private Member Functions
bool	DecStability (Ipv4Address node)
	decrease the stability of the node More...

bool	IncStability (Ipv4Address node)
	increase the stability of the node More...

bool	LookupRoute_Link (Ipv4Address id, RouteCacheEntry &rt)
	used by LookupRoute when LinkCache More...

RouteCache &	operator= (RouteCache const &)

Private Attributes
std::map< Ipv4Address, uint16_t >	m_ackIdCache
	The id cache to ensure all the ids are unique. More...

Time	m_badLinkLifetime
	The time for which the neighboring node is put into the blacklist. More...

std::map< Ipv4Address, RouteCacheEntry::IP_VECTOR >	m_bestRoutesTable_link
	for link route cache More...

Time	m_initStability

bool	m_isLinkCache
	Check if the route is using path cache or link cache. More...

std::map< Link, LinkStab >	m_linkCache
	The data structure to store link info. More...

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

uint32_t	m_maxEntriesEachDst
	number of entries for each destination More...

Time	m_minLifeTime

std::map< Ipv4Address, std::map< Ipv4Address, uint32_t > >	m_netGraph
	Current network graph state for this node, double is weight, which is calculated by the node information and link information, any time some changes of link cache and node cache change the weight and then recompute the best choice for each node. More...

std::map< Ipv4Address, NodeStab >	m_nodeCache
	The data structure to store node info. More...

routeEntryVector	m_routeEntryVector
	Define the route vector. More...

std::map< Ipv4Address, routeEntryVector >	m_sortedRoutes
	Map the ipv4Address to route entry vector. More...

uint32_t	m_stabilityDecrFactor
	Define the parameters for link cache type. More...

uint32_t	m_stabilityIncrFactor

bool	m_subRoute
	Check if save the sub route entries or not. More...

Time	m_useExtends

RouteCacheEntry::IP_VECTOR	m_vector
	The route vector to save the ip addresses for intermediate nodes. More...

Time	RouteCacheTimeout
	The maximum period of time that dsr is allowed to for an unused route. More...

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

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

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

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...

Detailed Description

DSR route request queue Since DSR is an on demand routing we queue requests while looking for route.

Doxygen introspection did not find any typical Config paths.

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

Definition at line 285 of file dsr-rcache.h.

Member Typedef Documentation

typedef std::list<RouteCacheEntry> ns3::dsr::RouteCache::routeEntryVector

private

Define the route cache data structure.

Definition at line 552 of file dsr-rcache.h.

typedef std::list<RouteCacheEntry::IP_VECTOR> ns3::dsr::RouteCache::routeVector

Define the vector of route entries.

Definition at line 301 of file dsr-rcache.h.

Constructor & Destructor Documentation

ns3::dsr::RouteCache::RouteCache ( )

Definition at line 146 of file dsr-rcache.cc.

References m_delay, m_ntimer, m_txErrorCallback, ns3::MakeCallback(), ProcessTxError(), PurgeMac(), ns3::Timer::SetDelay(), and ns3::Timer::SetFunction().

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ns3::dsr::RouteCache::~RouteCache ( )

virtual

Definition at line 161 of file dsr-rcache.cc.

References m_sortedRoutes, and NS_LOG_FUNCTION_NOARGS.

Member Function Documentation

void ns3::dsr::RouteCache::AddArpCache ( Ptr< ArpCache > a )

Add ARP cache to be used to allow layer 2 notifications processing.

Definition at line 1205 of file dsr-rcache.cc.

References m_arp.

void ns3::dsr::RouteCache::AddNeighbor	(	std::vector< Ipv4Address >	nodeList,
		Ipv4Address	ownAddress,
		Time	expire
	)

Add to the neighbor list.

Definition at line 1142 of file dsr-rcache.cc.

References LookupMacAddress(), m_nb, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_LOGIC, and PurgeMac().

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bool ns3::dsr::RouteCache::AddRoute ( RouteCacheEntry & rt )

Add route cache entry if it doesn't yet exist in route cache.

Parameters

rt	route cache entry

Returns: true in success

Save the new route cache along with the destination address in map

Drop the most aged packet when buffer reaches to max

Save the new route cache along with the destination address in map

Definition at line 656 of file dsr-rcache.cc.

References ns3::dsr::CompareRoutesExpire(), FindSameRoute(), ns3::dsr::RouteCacheEntry::GetDestination(), ns3::dsr::RouteCacheEntry::GetExpireTime(), ns3::dsr::RouteCacheEntry::GetVector(), m_maxEntriesEachDst, m_sortedRoutes, NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_INFO, Purge(), and RemoveLastEntry().

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bool ns3::dsr::RouteCache::AddRoute_Link	(	RouteCacheEntry::IP_VECTOR	nodelist,
		Ipv4Address	node
	)

Purge the link node cache first

This is the node stability

Link represent the one link for the route

Link stability

Set the link stability as the smallest node stability

Set the link stability as the m)minLifeTime, default is 1 second

Definition at line 561 of file dsr-rcache.cc.

References ns3::dsr::LinkStab::GetLinkStability(), ns3::Time::GetSeconds(), m_initStability, m_linkCache, m_minLifeTime, m_nodeCache, NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_LOGIC, ns3::dsr::Link::Print(), ns3::dsr::LinkStab::Print(), PurgeLinkNode(), RebuildBestRouteTable(), ns3::dsr::LinkStab::SetLinkStability(), ns3::dsr::NodeStab::SetNodeStability(), and UpdateNetGraph().

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uint16_t ns3::dsr::RouteCache::CheckUniqueAckId ( Ipv4Address nextHop )

Check for duplicate ids and save new entries if the id is not present in the table.

This part of code maintains an Acknowledgment id cache for next hop and remove duplicate ids.

Definition at line 1050 of file dsr-rcache.cc.

References m_ackIdCache, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

void ns3::dsr::RouteCache::Clear ( void )

inline

Delete all entries from routing table.

Definition at line 435 of file dsr-rcache.h.

References m_routeEntryVector.

void ns3::dsr::RouteCache::ClearMac ( )

inline

Remove all entries.

Definition at line 503 of file dsr-rcache.h.

References m_nb.

bool ns3::dsr::RouteCache::DecStability ( Ipv4Address node )

private

decrease the stability of the node

Parameters

node	the ip address of the node we want to decrease stability

Todo:: remove it here

Definition at line 538 of file dsr-rcache.cc.

References m_initStability, m_nodeCache, m_stabilityDecrFactor, NS_LOG_FUNCTION, and NS_LOG_INFO.

Referenced by DeleteAllRoutesIncludeLink().

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void ns3::dsr::RouteCache::DelArpCache ( Ptr< ArpCache > a )

Don't use given ARP cache any more (interface is down)

Definition at line 1211 of file dsr-rcache.cc.

References m_arp.

void ns3::dsr::RouteCache::DeleteAllRoutesIncludeLink	(	Ipv4Address	errorSrc,
		Ipv4Address	unreachNode,
		Ipv4Address	node
	)

Delete all the routes which includes the link from next hop address that has just been notified as unreachable.

Parameters

errorSrc	The error source address
unreachNode	The unreachable node
node	This node's ip address

Todo:: get rid of this one

Definition at line 773 of file dsr-rcache.cc.

References first::address, ns3::dsr::CompareRoutesExpire(), DecStability(), IsLinkCache(), m_linkCache, m_nodeCache, m_sortedRoutes, m_subRoute, NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_LOGIC, Purge(), PurgeLinkNode(), RebuildBestRouteTable(), ns3::dsr::RouteCacheEntry::SetDestination(), ns3::dsr::RouteCacheEntry::SetExpireTime(), ns3::dsr::RouteCacheEntry::SetVector(), and UpdateNetGraph().

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bool ns3::dsr::RouteCache::DeleteRoute ( Ipv4Address dst )

Delete the route with certain destination address.

Parameters

dst	the destination address of the routes that should be deleted

Definition at line 759 of file dsr-rcache.cc.

References m_sortedRoutes, NS_LOG_FUNCTION, NS_LOG_LOGIC, and Purge().

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bool ns3::dsr::RouteCache::FindSameRoute	(	RouteCacheEntry &	rt,
		std::list< RouteCacheEntry > &	rtVector
	)

Find the same route in the route cache.

Parameters

rt	entry with destination address dst, if exists
rtVector	the route vector

Definition at line 726 of file dsr-rcache.cc.

References ns3::dsr::CompareRoutesExpire(), ns3::dsr::RouteCacheEntry::GetDestination(), ns3::dsr::RouteCacheEntry::GetExpireTime(), ns3::Time::GetSeconds(), ns3::dsr::RouteCacheEntry::GetVector(), m_sortedRoutes, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by AddRoute().

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uint16_t ns3::dsr::RouteCache::GetAckSize ( )

Get the ack table size.

Definition at line 1072 of file dsr-rcache.cc.

References m_ackIdCache.

Time ns3::dsr::RouteCache::GetBadLinkLifetime ( ) const

inline

Definition at line 336 of file dsr-rcache.h.

References m_badLinkLifetime.

Time ns3::dsr::RouteCache::GetCacheTimeout ( ) const

inline

Definition at line 320 of file dsr-rcache.h.

References RouteCacheTimeout.

Callback<void, Ipv4Address, uint8_t > ns3::dsr::RouteCache::GetCallback ( ) const

inline

Definition at line 529 of file dsr-rcache.h.

References m_handleLinkFailure.

Time ns3::dsr::RouteCache::GetExpireTime ( Ipv4Address addr )

Return expire time for neighbor node with address addr, if exists, else return 0.

Definition at line 1098 of file dsr-rcache.cc.

References m_nb, ns3::Simulator::Now(), NS_LOG_FUNCTION, and PurgeMac().

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Time ns3::dsr::RouteCache::GetInitStability ( ) const

inline

Definition at line 360 of file dsr-rcache.h.

References m_initStability.

uint32_t ns3::dsr::RouteCache::GetMaxCacheLen ( ) const

inline

Definition at line 312 of file dsr-rcache.h.

References m_maxCacheLen.

uint32_t ns3::dsr::RouteCache::GetMaxEntriesEachDst ( ) const

inline

Definition at line 328 of file dsr-rcache.h.

References m_maxEntriesEachDst.

Time ns3::dsr::RouteCache::GetMinLifeTime ( ) const

inline

Definition at line 368 of file dsr-rcache.h.

References m_minLifeTime.

uint64_t ns3::dsr::RouteCache::GetStabilityDecrFactor ( ) const

inline

Definition at line 344 of file dsr-rcache.h.

References m_stabilityDecrFactor.

uint64_t ns3::dsr::RouteCache::GetStabilityIncrFactor ( ) const

inline

Definition at line 352 of file dsr-rcache.h.

References m_stabilityIncrFactor.

bool ns3::dsr::RouteCache::GetSubRoute ( ) const

inline

Definition at line 304 of file dsr-rcache.h.

References m_subRoute.

Callback<void, WifiMacHeader const &> ns3::dsr::RouteCache::GetTxErrorCallback ( ) const

inline

Get callback to ProcessTxError, this callback is trying to use the wifi mac tx error header to notify a link layer drop event, however, it is not fully supported yet.

Definition at line 519 of file dsr-rcache.h.

References m_txErrorCallback.

TypeId ns3::dsr::RouteCache::GetTypeId ( void )

static

Definition at line 137 of file dsr-rcache.cc.

References ns3::TypeId::SetParent().

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Time ns3::dsr::RouteCache::GetUseExtends ( ) const

inline

Definition at line 376 of file dsr-rcache.h.

References m_useExtends.

bool ns3::dsr::RouteCache::IncStability ( Ipv4Address node )

private

increase the stability of the node

Parameters

node	the ip address of the node we want to increase stability

Todo:: get rid of the debug here

Definition at line 514 of file dsr-rcache.cc.

References ns3::Time::GetSeconds(), m_initStability, m_nodeCache, m_stabilityIncrFactor, NS_LOG_FUNCTION, and NS_LOG_INFO.

Referenced by UseExtends().

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bool ns3::dsr::RouteCache::IsLinkCache ( )

Definition at line 309 of file dsr-rcache.cc.

References m_isLinkCache, and NS_LOG_FUNCTION.

Referenced by DeleteAllRoutesIncludeLink(), and LookupRoute().

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bool ns3::dsr::RouteCache::IsNeighbor ( Ipv4Address addr )

Check that node with address addr is neighbor.

This part maintains a neighbor list to handle unidirectional links and link-layer acks.

Definition at line 1082 of file dsr-rcache.cc.

References m_nb, NS_LOG_FUNCTION, and PurgeMac().

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Mac48Address ns3::dsr::RouteCache::LookupMacAddress ( Ipv4Address addr )

Find MAC address by IP using list of ARP caches.

Definition at line 1217 of file dsr-rcache.cc.

References ns3::Mac48Address::ConvertFrom(), ns3::ArpCache::Entry::GetMacAddress(), ns3::ArpCache::Entry::IsAlive(), ns3::ArpCache::Entry::IsExpired(), and m_arp.

Referenced by AddNeighbor(), and UpdateNeighbor().

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bool ns3::dsr::RouteCache::LookupRoute	(	Ipv4Address	id,
		RouteCacheEntry &	rt
	)

Lookup route cache entry with destination address dst.

Parameters

id	destination address
rt	entry with destination address id, if exists

Returns: true on success

Definition at line 207 of file dsr-rcache.cc.

References ns3::dsr::CompareRoutesExpire(), IsLinkCache(), LookupRoute_Link(), m_sortedRoutes, NS_LOG_FUNCTION, NS_LOG_INFO, NS_LOG_LOGIC, Purge(), ns3::dsr::RouteCacheEntry::SetDestination(), ns3::dsr::RouteCacheEntry::SetExpireTime(), and ns3::dsr::RouteCacheEntry::SetVector().

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bool ns3::dsr::RouteCache::LookupRoute_Link	(	Ipv4Address	id,
		RouteCacheEntry &	rt
	)

private

used by LookupRoute when LinkCache

Parameters

id	the ip address we are looking for
rt	the route cache entry to store the found one

We need to purge the link node cache

Definition at line 432 of file dsr-rcache.cc.

References ns3::dsr::RouteCacheEntry::GetVector(), m_bestRoutesTable_link, NS_LOG_FUNCTION, NS_LOG_INFO, NS_LOG_LOGIC, PrintVector(), PurgeLinkNode(), RouteCacheTimeout, ns3::dsr::RouteCacheEntry::SetDestination(), ns3::dsr::RouteCacheEntry::SetExpireTime(), and ns3::dsr::RouteCacheEntry::SetVector().

Referenced by LookupRoute().

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RouteCache& ns3::dsr::RouteCache::operator= ( RouteCache const & )

private

void ns3::dsr::RouteCache::Print ( std::ostream & os )

Print route cache.

Definition at line 1031 of file dsr-rcache.cc.

References m_routeEntryVector, NS_LOG_FUNCTION, and Purge().

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void ns3::dsr::RouteCache::PrintRouteVector ( std::list< RouteCacheEntry > route )

Print all the route vector elements from the route list.

Parameters

route the route list

Definition at line 952 of file dsr-rcache.cc.

References NS_LOG_FUNCTION, NS_LOG_INFO, and PrintVector().

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void ns3::dsr::RouteCache::PrintVector ( std::vector< Ipv4Address > & vec )

Print the route vector elements.

Parameters

vec	the route vector

Definition at line 931 of file dsr-rcache.cc.

References NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by LookupRoute_Link(), PrintRouteVector(), and RebuildBestRouteTable().

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void ns3::dsr::RouteCache::ProcessTxError ( WifiMacHeader const & hdr )

Process layer 2 TX error notification.

Definition at line 1234 of file dsr-rcache.cc.

References ns3::WifiMacHeader::GetAddr1(), m_nb, and PurgeMac().

Referenced by RouteCache().

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void ns3::dsr::RouteCache::Purge ( )

Delete all outdated entries and invalidate valid entry if Lifetime is expired.

Definition at line 964 of file dsr-rcache.cc.

References m_sortedRoutes, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by AddRoute(), DeleteAllRoutesIncludeLink(), DeleteRoute(), LookupRoute(), and Print().

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void ns3::dsr::RouteCache::PurgeLinkNode ( )

may need to remove them after verify

Definition at line 464 of file dsr-rcache.cc.

References m_linkCache, m_nodeCache, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by AddRoute_Link(), DeleteAllRoutesIncludeLink(), LookupRoute_Link(), and UseExtends().

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void ns3::dsr::RouteCache::PurgeMac ( )

Remove all expired mac entries.

Todo:: disable temporarily

Definition at line 1172 of file dsr-rcache.cc.

References ns3::Timer::Cancel(), m_handleLinkFailure, m_nb, m_ntimer, NS_LOG_LOGIC, and ns3::Timer::Schedule().

Referenced by AddNeighbor(), GetExpireTime(), IsNeighbor(), ProcessTxError(), RouteCache(), and UpdateNeighbor().

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void ns3::dsr::RouteCache::RebuildBestRouteTable ( Ipv4Address source )

USE MAXWEIGHT TO REPRESENT MAX; USE BROADCAST ADDRESS TO REPRESENT NULL PRECEEDING ADDRESS.

Parameters

source The source address the routes based on

The followings are initialize-single-source

The followings are core of dijskra algorithm

Definition at line 316 of file dsr-rcache.cc.

References ns3::Ipv4Address::IsBroadcast(), m_bestRoutesTable_link, m_linkCache, m_netGraph, MAXWEIGHT, NS_LOG_FUNCTION, NS_LOG_INFO, NS_LOG_LOGIC, PrintVector(), and s.

Referenced by AddRoute_Link(), and DeleteAllRoutesIncludeLink().

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void ns3::dsr::RouteCache::RemoveLastEntry ( std::list< RouteCacheEntry > & rtVector )

Remove the aged route cache entries when the route cache is full.

Definition at line 169 of file dsr-rcache.cc.

References NS_LOG_FUNCTION.

Referenced by AddRoute().

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void ns3::dsr::RouteCache::ScheduleTimer ( )

Schedule m_ntimer.

Definition at line 1198 of file dsr-rcache.cc.

References ns3::Timer::Cancel(), m_ntimer, and ns3::Timer::Schedule().

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void ns3::dsr::RouteCache::SetBadLinkLifetime ( Time t )

inline

Definition at line 340 of file dsr-rcache.h.

References m_badLinkLifetime.

void ns3::dsr::RouteCache::SetCacheTimeout ( Time t )

inline

Definition at line 324 of file dsr-rcache.h.

References RouteCacheTimeout.

void ns3::dsr::RouteCache::SetCacheType ( std::string type )

Dijsktra algorithm to get the best route from m_netGraph and update the m_bestRoutesTable_link when current graph information has changed.

Parameters

type	The type of the cache

Definition at line 290 of file dsr-rcache.cc.

References m_isLinkCache, NS_LOG_FUNCTION, and NS_LOG_INFO.

void ns3::dsr::RouteCache::SetCallback ( Callback< void, Ipv4Address, uint8_t > cb )

inline

Definition at line 525 of file dsr-rcache.h.

References m_handleLinkFailure.

void ns3::dsr::RouteCache::SetInitStability ( Time initStability )

inline

Definition at line 364 of file dsr-rcache.h.

References m_initStability.

void ns3::dsr::RouteCache::SetMaxCacheLen ( uint32_t len )

inline

Definition at line 316 of file dsr-rcache.h.

References m_maxCacheLen.

void ns3::dsr::RouteCache::SetMaxEntriesEachDst ( uint32_t entries )

inline

Definition at line 332 of file dsr-rcache.h.

References m_maxEntriesEachDst.

void ns3::dsr::RouteCache::SetMinLifeTime ( Time minLifeTime )

inline

Definition at line 372 of file dsr-rcache.h.

References m_minLifeTime.

void ns3::dsr::RouteCache::SetStabilityDecrFactor ( uint64_t decrFactor )

inline

Definition at line 348 of file dsr-rcache.h.

References m_stabilityDecrFactor.

void ns3::dsr::RouteCache::SetStabilityIncrFactor ( uint64_t incrFactor )

inline

Definition at line 356 of file dsr-rcache.h.

References m_stabilityIncrFactor.

void ns3::dsr::RouteCache::SetSubRoute ( bool subRoute )

inline

Definition at line 308 of file dsr-rcache.h.

References m_subRoute.

void ns3::dsr::RouteCache::SetUseExtends ( Time useExtends )

inline

Definition at line 380 of file dsr-rcache.h.

References m_useExtends.

void ns3::dsr::RouteCache::UpdateNeighbor	(	std::vector< Ipv4Address >	nodeList,
		Time	expire
	)

Update expire time for entry with address addr, if it exists, else add new entry.

Definition at line 1114 of file dsr-rcache.cc.

References LookupMacAddress(), m_nb, ns3::Simulator::Now(), NS_LOG_FUNCTION, NS_LOG_LOGIC, and PurgeMac().

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void ns3::dsr::RouteCache::UpdateNetGraph ( )

Update the Net Graph for the link and node cache has changed.

Todo:: May need to set different weight for different link here later

Definition at line 499 of file dsr-rcache.cc.

References m_linkCache, m_netGraph, and NS_LOG_FUNCTION.

Referenced by AddRoute_Link(), and DeleteAllRoutesIncludeLink().

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bool ns3::dsr::RouteCache::UpdateRouteEntry ( Ipv4Address dst )

Update route cache entry if it has been recently used and successfully delivered the data packet.

Parameters

dst	destination address of the route

Returns: true in success

Definition at line 177 of file dsr-rcache.cc.

References ns3::dsr::CompareRoutesExpire(), m_sortedRoutes, NS_LOG_FUNCTION, NS_LOG_LOGIC, RouteCacheTimeout, and ns3::dsr::RouteCacheEntry::SetExpireTime().

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void ns3::dsr::RouteCache::UseExtends ( RouteCacheEntry::IP_VECTOR rt )

When a link from the Route Cache is used in routing a packet originated or salvaged by that node, the stability metric for each of the two endpoint nodes of that link is incremented by the amount of time since that link was last used.

When a link is used in a route chosen for a packet originated or salvaged by this node, the link's lifetime is set to be at least UseExtends into the future

Purge the link node cache first

Todo:: remove after debug

Increase the stability of the node cache

Definition at line 610 of file dsr-rcache.cc.

References IncStability(), m_initStability, m_linkCache, m_nodeCache, m_useExtends, NS_LOG_FUNCTION, NS_LOG_INFO, NS_LOG_LOGIC, and PurgeLinkNode().

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Member Data Documentation

std::map<Ipv4Address, uint16_t> ns3::dsr::RouteCache::m_ackIdCache

private

The id cache to ensure all the ids are unique.

Definition at line 560 of file dsr-rcache.h.

Referenced by CheckUniqueAckId(), and GetAckSize().

std::vector<Ptr<ArpCache> > ns3::dsr::RouteCache::m_arp

list of ARP cached to be used for layer 2 notifications processing

Definition at line 635 of file dsr-rcache.h.

Referenced by AddArpCache(), DelArpCache(), and LookupMacAddress().

Time ns3::dsr::RouteCache::m_badLinkLifetime

private

The time for which the neighboring node is put into the blacklist.

Definition at line 540 of file dsr-rcache.h.

Referenced by GetBadLinkLifetime(), and SetBadLinkLifetime().

std::map<Ipv4Address, RouteCacheEntry::IP_VECTOR> ns3::dsr::RouteCache::m_bestRoutesTable_link

private

for link route cache

Definition at line 577 of file dsr-rcache.h.

Referenced by LookupRoute_Link(), and RebuildBestRouteTable().

Time ns3::dsr::RouteCache::m_delay

This timeout deals with the passive ack.

Definition at line 637 of file dsr-rcache.h.

Referenced by RouteCache().

Callback<void, Ipv4Address, uint8_t > ns3::dsr::RouteCache::m_handleLinkFailure

The following code handles link-layer acks.

link failure callback

Definition at line 627 of file dsr-rcache.h.

Referenced by GetCallback(), PurgeMac(), and SetCallback().

Time ns3::dsr::RouteCache::m_initStability

private

Definition at line 546 of file dsr-rcache.h.

Referenced by AddRoute_Link(), DecStability(), GetInitStability(), IncStability(), SetInitStability(), and UseExtends().

bool ns3::dsr::RouteCache::m_isLinkCache

private

Check if the route is using path cache or link cache.

Definition at line 562 of file dsr-rcache.h.

Referenced by IsLinkCache(), and SetCacheType().

std::map<Link, LinkStab> ns3::dsr::RouteCache::m_linkCache

private

The data structure to store link info.

Definition at line 578 of file dsr-rcache.h.

Referenced by AddRoute_Link(), DeleteAllRoutesIncludeLink(), PurgeLinkNode(), RebuildBestRouteTable(), UpdateNetGraph(), and UseExtends().

uint32_t ns3::dsr::RouteCache::m_maxCacheLen

private

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

Definition at line 538 of file dsr-rcache.h.

Referenced by GetMaxCacheLen(), and SetMaxCacheLen().

uint32_t ns3::dsr::RouteCache::m_maxEntriesEachDst

private

number of entries for each destination

Definition at line 558 of file dsr-rcache.h.

Referenced by AddRoute(), GetMaxEntriesEachDst(), and SetMaxEntriesEachDst().

Time ns3::dsr::RouteCache::m_minLifeTime

private

Definition at line 547 of file dsr-rcache.h.

Referenced by AddRoute_Link(), GetMinLifeTime(), and SetMinLifeTime().

std::vector<Neighbor> ns3::dsr::RouteCache::m_nb

vector of entries

Definition at line 633 of file dsr-rcache.h.

Referenced by AddNeighbor(), ClearMac(), GetExpireTime(), IsNeighbor(), ProcessTxError(), PurgeMac(), and UpdateNeighbor().

std::map<Ipv4Address, std::map<Ipv4Address, uint32_t> > ns3::dsr::RouteCache::m_netGraph

private

Current network graph state for this node, double is weight, which is calculated by the node information and link information, any time some changes of link cache and node cache change the weight and then recompute the best choice for each node.

Definition at line 575 of file dsr-rcache.h.

Referenced by RebuildBestRouteTable(), and UpdateNetGraph().

std::map<Ipv4Address, NodeStab> ns3::dsr::RouteCache::m_nodeCache

private

The data structure to store node info.

Definition at line 579 of file dsr-rcache.h.

Referenced by AddRoute_Link(), DecStability(), DeleteAllRoutesIncludeLink(), IncStability(), PurgeLinkNode(), and UseExtends().

Timer ns3::dsr::RouteCache::m_ntimer

Timer for neighbor's list. Schedule Purge().

Definition at line 631 of file dsr-rcache.h.

Referenced by PurgeMac(), RouteCache(), and ScheduleTimer().

routeEntryVector ns3::dsr::RouteCache::m_routeEntryVector

private

Define the route vector.

Definition at line 556 of file dsr-rcache.h.

Referenced by Clear(), and Print().

std::map<Ipv4Address, routeEntryVector> ns3::dsr::RouteCache::m_sortedRoutes

private

Map the ipv4Address to route entry vector.

Definition at line 554 of file dsr-rcache.h.

Referenced by AddRoute(), DeleteAllRoutesIncludeLink(), DeleteRoute(), FindSameRoute(), LookupRoute(), Purge(), UpdateRouteEntry(), and ~RouteCache().

uint32_t ns3::dsr::RouteCache::m_stabilityDecrFactor

private

Define the parameters for link cache type.

Definition at line 544 of file dsr-rcache.h.

Referenced by DecStability(), GetStabilityDecrFactor(), and SetStabilityDecrFactor().

uint32_t ns3::dsr::RouteCache::m_stabilityIncrFactor

private

Definition at line 545 of file dsr-rcache.h.

Referenced by GetStabilityIncrFactor(), IncStability(), and SetStabilityIncrFactor().

bool ns3::dsr::RouteCache::m_subRoute

private

Check if save the sub route entries or not.

Definition at line 564 of file dsr-rcache.h.

Referenced by DeleteAllRoutesIncludeLink(), GetSubRoute(), and SetSubRoute().

Callback<void, WifiMacHeader const &> ns3::dsr::RouteCache::m_txErrorCallback

TX error callback.

Definition at line 629 of file dsr-rcache.h.

Referenced by GetTxErrorCallback(), and RouteCache().

Time ns3::dsr::RouteCache::m_useExtends

private

Definition at line 548 of file dsr-rcache.h.

Referenced by GetUseExtends(), SetUseExtends(), and UseExtends().

RouteCacheEntry::IP_VECTOR ns3::dsr::RouteCache::m_vector

private

The route vector to save the ip addresses for intermediate nodes.

Definition at line 537 of file dsr-rcache.h.

Time ns3::dsr::RouteCache::RouteCacheTimeout

private

The maximum period of time that dsr is allowed to for an unused route.

Definition at line 539 of file dsr-rcache.h.

Referenced by GetCacheTimeout(), LookupRoute_Link(), SetCacheTimeout(), and UpdateRouteEntry().

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

src/dsr/model/dsr-rcache.h
src/dsr/model/dsr-rcache.cc

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