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93 lines
2.3 KiB
93 lines
2.3 KiB
/* |
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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 "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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