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/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2012-2013 ZeroTier Networks LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#include "Network.hpp"
#include "Switch.hpp"
namespace ZeroTier {
Network::Network(const RuntimeEnvironment *renv,uint64_t id)
throw(std::runtime_error) :
Thread(),
_r(renv),
_id(id),
_tap(renv,renv->identity.address().toMAC(),ZT_IF_MTU),
_members(),
_open(false),
_lock()
{
TRACE("new network %llu created, TAP device: %s",id,_tap.deviceName().c_str());
start();
}
Network::~Network()
{
_tap.close();
join();
TRACE("network %llu (%s) closed",_id,_tap.deviceName().c_str());
}
void Network::main()
throw()
{
Buffer<4096> buf;
MAC from,to;
unsigned int etherType = 0;
while (_tap.open()) {
unsigned int len = _tap.get(from,to,etherType,buf.data());
if (len) {
buf.setSize(len);
try {
if (!*__refCount)
break; // sanity check
_r->sw->onLocalEthernet(SharedPtr<Network>(this),from,to,etherType,buf);
} catch (std::exception &exc) {
TRACE("unexpected exception handling local packet: %s",exc.what());
} catch ( ... ) {
TRACE("unexpected exception handling local packet");
}
} else break;
}
TRACE("network %llu thread terminating",_id);
}
} // namespace ZeroTier
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