mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-09-05 22:32:55 +02:00
88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* (c) ZeroTier, Inc.
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* https://www.zerotier.com/
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*/
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#include "OutboundMulticast.hpp"
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#include "Constants.hpp"
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#include "Network.hpp"
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#include "Node.hpp"
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#include "RuntimeEnvironment.hpp"
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#include "Switch.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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}
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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, _nwid, ZT_QOS_NO_FLOW);
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}
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}
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} // namespace ZeroTier
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