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Get a default rate that works for multicast.

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This commit is contained in:
Adam Ierymenko 2013-09-12 12:11:21 -04:00
parent d74b5f4bc6
commit 55e7ddba1e
3 changed files with 12 additions and 7 deletions
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2
node/Constants.hpp
View File

@ -261,7 +261,7 @@ error_no_ZT_ARCH_defined;
/**
* Expiration time in ms for multicast deduplication history items
*/
#define ZT_MULTICAST_DEDUP_HISTORY_EXPIRE 4000
#define ZT_MULTICAST_DEDUP_HISTORY_EXPIRE 2000
/**
* Period between announcements of all multicast 'likes' in ms

3
node/Network.cpp
View File

@ -117,8 +117,7 @@ bool Network::CertificateOfMembership::compare(const CertificateOfMembership &ot
return true;
}
// A low default global rate, fast enough for something like ARP
const Network::MulticastRates::Rate Network::MulticastRates::GLOBAL_DEFAULT_RATE(128,128,64);
const Network::MulticastRates::Rate Network::MulticastRates::GLOBAL_DEFAULT_RATE(65535,65535,64);
const char *Network::statusString(const Status s)
throw()

14
node/Switch.cpp
View File

@ -105,10 +105,16 @@ void Switch::onLocalEthernet(const SharedPtr<Network> &network,const MAC &from,c
mg = MulticastGroup::deriveMulticastGroupForAddressResolution(InetAddress(data.field(24,4),4,0));
}
// Check our own multicasts against the global rate for this network
// just to be polite.
uint64_t crc = Multicaster::computeMulticastDedupCrc(network->id(),from,mg,etherType,data.data(),data.size());
uint64_t now = Utils::now();
if (_r->multicaster->checkDuplicate(crc,now)) {
LOG("%s/%.16llx: multicast group %s: dropped %u bytes, duplicate multicast in too short a time frame",network->tap().deviceName().c_str(),(unsigned long long)network->id(),mg.toString().c_str(),(unsigned int)data.size());
return;
}
_r->multicaster->addToDedupHistory(crc,now);
if (!network->updateAndCheckMulticastBalance(_r->identity.address(),mg,data.size())) {
LOG("didn't send local multicast %u byte multicast packet to network %.16llx: not within budget for multicast group %s",(unsigned int)data.size(),(unsigned long long)network->id(),mg.toString().c_str());
LOG("%s/%.16llx: multicast group %s: dropped %u bytes, out of budget",network->tap().deviceName().c_str(),(unsigned long long)network->id(),mg.toString().c_str(),(unsigned int)data.size());
return;
}
@ -124,7 +130,7 @@ void Switch::onLocalEthernet(const SharedPtr<Network> &network,const MAC &from,c
bloom,
ZT_MULTICAST_PROPAGATION_BREADTH,
propPeers,
Utils::now());
now);
if (!np)
return;