inet::ospfv2::NeighborState Class Reference

#include <Ospfv2NeighborState.h>

Inheritance diagram for inet::ospfv2::NeighborState:

Public Member Functions
virtual	~NeighborState ()
virtual void	processEvent (Neighbor *neighbor, Neighbor::NeighborEventType event)=0
virtual Neighbor::NeighborStateType	getState () const =0

Protected Member Functions
void	changeState (Neighbor *neighbor, NeighborState *newState, NeighborState *currentState)
bool	updateLsa (Neighbor *neighbor)

Constructor & Destructor Documentation

~NeighborState()

virtual inet::ospfv2::NeighborState::~NeighborState ( )

inlinevirtual

{}

Member Function Documentation

changeState()

void inet::ospfv2::NeighborState::changeState ( Neighbor *  neighbor, NeighborState *  newState, NeighborState *  currentState  )

protected

{
    neighbor->changeState(newState, currentState);
 
    if ((currentState->getState() == Neighbor::FULL_STATE) || (newState->getState() == Neighbor::FULL_STATE))
        if (updateLsa(neighbor))
            neighbor->getInterface()->getArea()->getRouter()->rebuildRoutingTable();
}

Referenced by inet::ospfv2::NeighborStateAttempt::processEvent(), inet::ospfv2::NeighborStateTwoWay::processEvent(), inet::ospfv2::NeighborStateLoading::processEvent(), inet::ospfv2::NeighborStateInit::processEvent(), inet::ospfv2::NeighborStateFull::processEvent(), inet::ospfv2::NeighborStateExchangeStart::processEvent(), inet::ospfv2::NeighborStateExchange::processEvent(), and inet::ospfv2::NeighborStateDown::processEvent().

getState()

virtual Neighbor::NeighborStateType inet::ospfv2::NeighborState::getState ( ) const

pure virtual

Implemented in inet::ospfv2::NeighborStateAttempt, inet::ospfv2::NeighborStateDown, inet::ospfv2::NeighborStateExchange, inet::ospfv2::NeighborStateExchangeStart, inet::ospfv2::NeighborStateFull, inet::ospfv2::NeighborStateInit, inet::ospfv2::NeighborStateLoading, and inet::ospfv2::NeighborStateTwoWay.

Referenced by changeState(), inet::ospfv2::Neighbor::changeState(), and inet::ospfv2::Neighbor::getState().

processEvent()

virtual void inet::ospfv2::NeighborState::processEvent ( Neighbor *  neighbor, Neighbor::NeighborEventType  event  )

pure virtual

Implemented in inet::ospfv2::NeighborStateAttempt, inet::ospfv2::NeighborStateDown, inet::ospfv2::NeighborStateExchange, inet::ospfv2::NeighborStateExchangeStart, inet::ospfv2::NeighborStateFull, inet::ospfv2::NeighborStateInit, inet::ospfv2::NeighborStateLoading, and inet::ospfv2::NeighborStateTwoWay.

Referenced by inet::ospfv2::Neighbor::processEvent().

updateLsa()

bool inet::ospfv2::NeighborState::updateLsa ( Neighbor *  neighbor )

protected

{
    bool shouldRebuildRoutingTable = false;
    RouterId routerID = neighbor->getInterface()->getArea()->getRouter()->getRouterID();
    RouterLsa *routerLSA = neighbor->getInterface()->getArea()->findRouterLSA(routerID);
 
    if (routerLSA != nullptr) {
        long sequenceNumber = routerLSA->getHeader().getLsSequenceNumber();
        if (sequenceNumber == MAX_SEQUENCE_NUMBER) {
            routerLSA->getHeaderForUpdate().setLsAge(MAX_AGE);
            neighbor->getInterface()->getArea()->floodLSA(routerLSA);
            routerLSA->incrementInstallTime();
        }
        else {
            RouterLsa *newLSA = neighbor->getInterface()->getArea()->originateRouterLSA();
 
            newLSA->getHeaderForUpdate().setLsSequenceNumber(sequenceNumber + 1);
            shouldRebuildRoutingTable |= routerLSA->update(newLSA);
            delete newLSA;
 
            neighbor->getInterface()->getArea()->floodLSA(routerLSA);
        }
    }
 
    if (neighbor->getInterface()->getState() == Ospfv2Interface::DESIGNATED_ROUTER_STATE) {
        NetworkLsa *networkLSA = neighbor->getInterface()->getArea()->findNetworkLSA(neighbor->getInterface()->getAddressRange().address);
 
        if (networkLSA != nullptr) {
            long sequenceNumber = networkLSA->getHeader().getLsSequenceNumber();
            if (sequenceNumber == MAX_SEQUENCE_NUMBER) {
                networkLSA->getHeaderForUpdate().setLsAge(MAX_AGE);
                neighbor->getInterface()->getArea()->floodLSA(networkLSA);
                networkLSA->incrementInstallTime();
            }
            else {
                NetworkLsa *newLSA = neighbor->getInterface()->getArea()->originateNetworkLSA(neighbor->getInterface());
 
                if (newLSA != nullptr) {
                    newLSA->getHeaderForUpdate().setLsSequenceNumber(sequenceNumber + 1);
                    shouldRebuildRoutingTable |= networkLSA->update(newLSA);
                    delete newLSA;
                }
                else { // no neighbors on the network -> old NetworkLsa must be flushed
                    networkLSA->getHeaderForUpdate().setLsAge(MAX_AGE);
                    networkLSA->incrementInstallTime();
                }
 
                neighbor->getInterface()->getArea()->floodLSA(networkLSA);
            }
        }
    }
 
    return shouldRebuildRoutingTable;
}

Referenced by changeState().

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

• Ospfv2NeighborState.h
• Ospfv2NeighborState.cc