protected boolean isInSwitchBroadcastCache(IOFSwitch sw, OFPacketIn pi, FloodlightContext cntx) {
if (sw == null) return true;
// If the feature is disabled, always return false;
if (!broadcastCacheFeature) return false;
// Get the hash of the Ethernet packet.
Ethernet eth =
IFloodlightProviderService.bcStore.get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
long hash = pi.getInPort() * prime2 + eth.hashCode();
// some FORWARD_OR_FLOOD packets are unicast with unknown destination mac
return sw.updateBroadcastCache(hash, pi.getInPort());
}
protected boolean isInBroadcastCache(IOFSwitch sw, OFPacketIn pi, FloodlightContext cntx) {
// Get the cluster id of the switch.
// Get the hash of the Ethernet packet.
if (sw == null) return true;
// If the feature is disabled, always return false;
if (!broadcastCacheFeature) return false;
Ethernet eth =
IFloodlightProviderService.bcStore.get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
Long broadcastHash;
broadcastHash =
topology.getL2DomainId(sw.getId()) * prime1 + pi.getInPort() * prime2 + eth.hashCode();
if (broadcastCache.update(broadcastHash)) {
sw.updateBroadcastCache(broadcastHash, pi.getInPort());
return true;
} else {
return false;
}
}