mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-18 20:47:53 +00:00
93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
/*
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* Copyright (c)2019 ZeroTier, Inc.
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file in the project's root directory.
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*
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* Change Date: 2026-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2.0 of the Apache License.
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*/
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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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bool disableCompression,
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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) {
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flags |= 0x02;
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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) {
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_packet.append((uint32_t)gatherLimit);
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}
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if (src) {
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src.appendTo(_packet);
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}
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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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if (!disableCompression) {
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_packet.compress();
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}
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memcpy(_frameData,payload,_frameLen);
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}
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void OutboundMulticast::sendOnly(const RuntimeEnvironment *RR,void *tPtr,const Address &toAddr)
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{
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const SharedPtr<Network> nw(RR->node->network(_nwid));
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uint8_t QoSBucket = 255; // Dummy value
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if ((nw)&&(nw->filterOutgoingPacket(tPtr,true,RR->identity.address(),toAddr,_macSrc,_macDest,_frameData,_frameLen,_etherType,0,QoSBucket))) {
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nw->pushCredentialsIfNeeded(tPtr,toAddr,RR->node->now());
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_packet.newInitializationVector();
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_packet.setDestination(toAddr);
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RR->node->expectReplyTo(_packet.packetId());
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_tmp = _packet;
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RR->sw->send(tPtr,_tmp,true);
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}
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}
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} // namespace ZeroTier
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