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More work in progress in new multicast propagation...

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This commit is contained in:
Adam Ierymenko 2013-09-25 17:41:49 -04:00
parent f3128a18fe
commit 24bad9f3d1
9 changed files with 226 additions and 162 deletions
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36
node/Network.hpp
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@ -52,6 +52,8 @@
#include "InetAddress.hpp"
#include "BandwidthAccount.hpp"
#define ZT_NETWORK_MULTICAST_DEDUP_HISTORY_LENGTH 256
namespace ZeroTier {
class RuntimeEnvironment;
@ -583,12 +585,46 @@ public:
//return tmp;
}
/**
* Multicast deduplicator
*
* This checks to see if a multicast GUID has been seen before. If not, it
* adds it to the history and returns false.
*
* @param mcGuid Multicast GUID (sender address + sender unique ID)
* @return True if multicast IS a duplicate, false otherwise
*/
inline bool multicastDeduplicate(uint64_t mcGuid)
throw()
{
Mutex::Lock _l(_lock);
for(unsigned int i=0;i<ZT_NETWORK_MULTICAST_DEDUP_HISTORY_LENGTH;++i) {
if (_multicastHistory[i] == mcGuid)
return true;
}
_multicastHistory[_multicastHistoryPtr++ % ZT_NETWORK_MULTICAST_DEDUP_HISTORY_LENGTH] = mcGuid;
return false;
}
/**
* @return True if this network allows bridging
*/
inline bool permitsBridging() const
throw()
{
return false; // TODO: bridging not implemented yet
}
private:
static void _CBhandleTapData(void *arg,const MAC &from,const MAC &to,unsigned int etherType,const Buffer<4096> &data);
void _restoreState();
const RuntimeEnvironment *_r;
// Ring buffer of most recently injected multicast packet GUIDs
uint64_t _multicastHistory[ZT_NETWORK_MULTICAST_DEDUP_HISTORY_LENGTH];
unsigned int _multicastHistoryPtr;
// Multicast bandwidth accounting for peers on this network
std::map< std::pair<Address,MulticastGroup>,BandwidthAccount > _multicastRateAccounts;