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Don't transmit broadcasts if enableBroadcast is false on a network.

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This commit is contained in:
Adam Ierymenko 2014-05-23 19:52:39 -04:00
parent 2861229558
commit 657f6ae342
1 changed files with 7 additions and 2 deletions
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9
node/Switch.cpp
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@ -109,9 +109,14 @@ void Switch::onLocalEthernet(const SharedPtr<Network> &network,const MAC &from,c
MulticastGroup mg(to,0);
if (to.isBroadcast()) {
// Cram IPv4 IP into ADI field to make IPv4 ARP broadcast channel specific and scalable
if ((etherType == ZT_ETHERTYPE_ARP)&&(data.size() == 28)&&(data[2] == 0x08)&&(data[3] == 0x00)&&(data[4] == 6)&&(data[5] == 4)&&(data[7] == 0x01))
if ((etherType == ZT_ETHERTYPE_ARP)&&(data.size() == 28)&&(data[2] == 0x08)&&(data[3] == 0x00)&&(data[4] == 6)&&(data[5] == 4)&&(data[7] == 0x01)) {
// Cram IPv4 IP into ADI field to make IPv4 ARP broadcast channel specific and scalable
mg = MulticastGroup::deriveMulticastGroupForAddressResolution(InetAddress(data.field(24,4),4,0));
} else if (!nconf->enableBroadcast()) {
// Don't transmit broadcasts if this network doesn't want them
TRACE("%s: dropped broadcast since ff:ff:ff:ff:ff:ff is not enabled on network %.16llx",network->tapDeviceName().c_str(),network->id());
return;
}
}
if (!network->updateAndCheckMulticastBalance(_r->identity.address(),mg,data.size())) {