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99 lines
2.8 KiB
99 lines
2.8 KiB
/* |
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* ZeroTier One - Network Virtualization Everywhere |
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* Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/ |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include "Constants.hpp" |
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#include "RuntimeEnvironment.hpp" |
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#include "OutboundMulticast.hpp" |
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#include "Switch.hpp" |
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#include "Network.hpp" |
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#include "Node.hpp" |
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#include "Peer.hpp" |
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#include "Topology.hpp" |
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namespace ZeroTier { |
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void OutboundMulticast::init( |
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const RuntimeEnvironment *RR, |
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uint64_t timestamp, |
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uint64_t nwid, |
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unsigned int limit, |
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unsigned int gatherLimit, |
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const MAC &src, |
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const MulticastGroup &dest, |
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unsigned int etherType, |
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const void *payload, |
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unsigned int len) |
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{ |
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uint8_t flags = 0; |
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_timestamp = timestamp; |
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_nwid = nwid; |
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if (src) { |
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_macSrc = src; |
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flags |= 0x04; |
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} else { |
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_macSrc.fromAddress(RR->identity.address(),nwid); |
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} |
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_macDest = dest.mac(); |
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_limit = limit; |
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_frameLen = (len < ZT_MAX_MTU) ? len : ZT_MAX_MTU; |
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_etherType = etherType; |
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if (gatherLimit) flags |= 0x02; |
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/* |
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TRACE(">>MC %.16llx INIT %.16llx/%s limit %u gatherLimit %u from %s to %s length %u", |
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(unsigned long long)this, |
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nwid, |
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dest.toString().c_str(), |
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limit, |
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gatherLimit, |
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(src) ? src.toString().c_str() : MAC(RR->identity.address(),nwid).toString().c_str(), |
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dest.toString().c_str(), |
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len); |
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*/ |
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_packet.setSource(RR->identity.address()); |
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_packet.setVerb(Packet::VERB_MULTICAST_FRAME); |
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_packet.append((uint64_t)nwid); |
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_packet.append(flags); |
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if (gatherLimit) _packet.append((uint32_t)gatherLimit); |
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if (src) src.appendTo(_packet); |
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dest.mac().appendTo(_packet); |
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_packet.append((uint32_t)dest.adi()); |
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_packet.append((uint16_t)etherType); |
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_packet.append(payload,_frameLen); |
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_packet.compress(); |
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memcpy(_frameData,payload,_frameLen); |
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} |
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void OutboundMulticast::sendOnly(const RuntimeEnvironment *RR,const Address &toAddr) |
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{ |
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const SharedPtr<Network> nw(RR->node->network(_nwid)); |
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Address toAddr2(toAddr); |
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if ((nw)&&(nw->filterOutgoingPacket(true,RR->identity.address(),toAddr2,_macSrc,_macDest,_frameData,_frameLen,_etherType,0))) { |
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//TRACE(">>MC %.16llx -> %s",(unsigned long long)this,toAddr.toString().c_str()); |
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_packet.newInitializationVector(); |
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_packet.setDestination(toAddr2); |
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RR->node->expectReplyTo(_packet.packetId()); |
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RR->sw->send(_packet,true); |
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} |
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} |
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} // namespace ZeroTier
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