| /* |
| * Copyright (c) 2016, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** |
| * @file |
| * This file implements mesh forwarding of IPv6/6LoWPAN messages. |
| */ |
| |
| #include "mesh_forwarder.hpp" |
| |
| #include "common/code_utils.hpp" |
| #include "common/debug.hpp" |
| #include "common/encoding.hpp" |
| #include "common/instance.hpp" |
| #include "common/locator_getters.hpp" |
| #include "common/message.hpp" |
| #include "common/random.hpp" |
| #include "common/time_ticker.hpp" |
| #include "net/ip6.hpp" |
| #include "net/ip6_filter.hpp" |
| #include "net/netif.hpp" |
| #include "net/tcp6.hpp" |
| #include "net/udp6.hpp" |
| #include "radio/radio.hpp" |
| #include "thread/mle.hpp" |
| #include "thread/mle_router.hpp" |
| #include "thread/thread_netif.hpp" |
| |
| namespace ot { |
| |
| RegisterLogModule("MeshForwarder"); |
| |
| void ThreadLinkInfo::SetFrom(const Mac::RxFrame &aFrame) |
| { |
| Clear(); |
| |
| if (kErrorNone != aFrame.GetSrcPanId(mPanId)) |
| { |
| IgnoreError(aFrame.GetDstPanId(mPanId)); |
| } |
| |
| { |
| Mac::PanId dstPanId; |
| |
| if (kErrorNone != aFrame.GetDstPanId(dstPanId)) |
| { |
| dstPanId = mPanId; |
| } |
| |
| mIsDstPanIdBroadcast = (dstPanId == Mac::kPanIdBroadcast); |
| } |
| |
| mChannel = aFrame.GetChannel(); |
| mRss = aFrame.GetRssi(); |
| mLqi = aFrame.GetLqi(); |
| mLinkSecurity = aFrame.GetSecurityEnabled(); |
| #if OPENTHREAD_CONFIG_TIME_SYNC_ENABLE |
| if (aFrame.GetTimeIe() != nullptr) |
| { |
| mNetworkTimeOffset = aFrame.ComputeNetworkTimeOffset(); |
| mTimeSyncSeq = aFrame.ReadTimeSyncSeq(); |
| } |
| #endif |
| #if OPENTHREAD_CONFIG_MULTI_RADIO |
| mRadioType = static_cast<uint8_t>(aFrame.GetRadioType()); |
| #endif |
| } |
| |
| MeshForwarder::MeshForwarder(Instance &aInstance) |
| : InstanceLocator(aInstance) |
| , mMessageNextOffset(0) |
| , mSendMessage(nullptr) |
| , mMeshSource() |
| , mMeshDest() |
| , mAddMeshHeader(false) |
| , mEnabled(false) |
| , mTxPaused(false) |
| , mSendBusy(false) |
| #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_MAC_COLLISION_AVOIDANCE_DELAY_ENABLE |
| , mDelayNextTx(false) |
| , mTxDelayTimer(aInstance, HandleTxDelayTimer) |
| #endif |
| , mScheduleTransmissionTask(aInstance, MeshForwarder::ScheduleTransmissionTask) |
| #if OPENTHREAD_FTD |
| , mIndirectSender(aInstance) |
| #endif |
| , mDataPollSender(aInstance) |
| { |
| mFragTag = Random::NonCrypto::GetUint16(); |
| |
| ResetCounters(); |
| |
| #if OPENTHREAD_FTD |
| mFragmentPriorityList.Clear(); |
| #endif |
| } |
| |
| void MeshForwarder::Start(void) |
| { |
| if (!mEnabled) |
| { |
| Get<Mac::Mac>().SetRxOnWhenIdle(true); |
| #if OPENTHREAD_FTD |
| mIndirectSender.Start(); |
| #endif |
| |
| mEnabled = true; |
| } |
| } |
| |
| void MeshForwarder::Stop(void) |
| { |
| VerifyOrExit(mEnabled); |
| |
| mDataPollSender.StopPolling(); |
| Get<TimeTicker>().UnregisterReceiver(TimeTicker::kMeshForwarder); |
| Get<Mle::DiscoverScanner>().Stop(); |
| |
| mSendQueue.DequeueAndFreeAll(); |
| mReassemblyList.DequeueAndFreeAll(); |
| |
| #if OPENTHREAD_FTD |
| mIndirectSender.Stop(); |
| mFragmentPriorityList.Clear(); |
| #endif |
| |
| #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_MAC_COLLISION_AVOIDANCE_DELAY_ENABLE |
| mTxDelayTimer.Stop(); |
| mDelayNextTx = false; |
| #endif |
| |
| mEnabled = false; |
| mSendMessage = nullptr; |
| Get<Mac::Mac>().SetRxOnWhenIdle(false); |
| |
| exit: |
| return; |
| } |
| |
| void MeshForwarder::PrepareEmptyFrame(Mac::TxFrame &aFrame, const Mac::Address &aMacDest, bool aAckRequest) |
| { |
| uint16_t fcf = 0; |
| bool iePresent = CalcIePresent(nullptr); |
| |
| Mac::Address macSource; |
| macSource.SetShort(Get<Mac::Mac>().GetShortAddress()); |
| |
| if (macSource.IsShortAddrInvalid() || aMacDest.IsExtended()) |
| { |
| macSource.SetExtended(Get<Mac::Mac>().GetExtAddress()); |
| } |
| |
| fcf = Mac::Frame::kFcfFrameData | Mac::Frame::kFcfPanidCompression | Mac::Frame::kFcfSecurityEnabled; |
| |
| if (iePresent) |
| { |
| fcf |= Mac::Frame::kFcfIePresent; |
| } |
| |
| fcf |= CalcFrameVersion(Get<NeighborTable>().FindNeighbor(aMacDest), iePresent); |
| |
| if (aAckRequest) |
| { |
| fcf |= Mac::Frame::kFcfAckRequest; |
| } |
| |
| fcf |= (aMacDest.IsShort()) ? Mac::Frame::kFcfDstAddrShort : Mac::Frame::kFcfDstAddrExt; |
| fcf |= (macSource.IsShort()) ? Mac::Frame::kFcfSrcAddrShort : Mac::Frame::kFcfSrcAddrExt; |
| |
| aFrame.InitMacHeader(fcf, Mac::Frame::kKeyIdMode1 | Mac::Frame::kSecEncMic32); |
| |
| if (aFrame.IsDstPanIdPresent()) |
| { |
| aFrame.SetDstPanId(Get<Mac::Mac>().GetPanId()); |
| } |
| IgnoreError(aFrame.SetSrcPanId(Get<Mac::Mac>().GetPanId())); |
| |
| aFrame.SetDstAddr(aMacDest); |
| aFrame.SetSrcAddr(macSource); |
| aFrame.SetFramePending(false); |
| #if OPENTHREAD_CONFIG_MAC_HEADER_IE_SUPPORT |
| if (iePresent) |
| { |
| AppendHeaderIe(nullptr, aFrame); |
| } |
| #endif |
| aFrame.SetPayloadLength(0); |
| } |
| |
| void MeshForwarder::RemoveMessage(Message &aMessage) |
| { |
| PriorityQueue *queue = aMessage.GetPriorityQueue(); |
| |
| OT_ASSERT(queue != nullptr); |
| |
| if (queue == &mSendQueue) |
| { |
| #if OPENTHREAD_FTD |
| for (Child &child : Get<ChildTable>().Iterate(Child::kInStateAnyExceptInvalid)) |
| { |
| IgnoreError(mIndirectSender.RemoveMessageFromSleepyChild(aMessage, child)); |
| } |
| #endif |
| |
| if (mSendMessage == &aMessage) |
| { |
| mSendMessage = nullptr; |
| } |
| } |
| |
| LogMessage(kMessageEvict, aMessage, kErrorNoBufs); |
| queue->DequeueAndFree(aMessage); |
| } |
| |
| void MeshForwarder::ResumeMessageTransmissions(void) |
| { |
| if (mTxPaused) |
| { |
| mTxPaused = false; |
| mScheduleTransmissionTask.Post(); |
| } |
| } |
| |
| #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_MAC_COLLISION_AVOIDANCE_DELAY_ENABLE |
| void MeshForwarder::HandleTxDelayTimer(Timer &aTimer) |
| { |
| aTimer.Get<MeshForwarder>().HandleTxDelayTimer(); |
| } |
| |
| void MeshForwarder::HandleTxDelayTimer(void) |
| { |
| mDelayNextTx = false; |
| mScheduleTransmissionTask.Post(); |
| LogDebg("Tx delay timer expired"); |
| } |
| #endif |
| |
| void MeshForwarder::ScheduleTransmissionTask(Tasklet &aTasklet) |
| { |
| aTasklet.Get<MeshForwarder>().ScheduleTransmissionTask(); |
| } |
| |
| void MeshForwarder::ScheduleTransmissionTask(void) |
| { |
| VerifyOrExit(!mSendBusy && !mTxPaused); |
| |
| #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_MAC_COLLISION_AVOIDANCE_DELAY_ENABLE |
| VerifyOrExit(!mDelayNextTx); |
| #endif |
| |
| mSendMessage = PrepareNextDirectTransmission(); |
| VerifyOrExit(mSendMessage != nullptr); |
| |
| if (mSendMessage->GetOffset() == 0) |
| { |
| mSendMessage->SetTxSuccess(true); |
| } |
| |
| Get<Mac::Mac>().RequestDirectFrameTransmission(); |
| |
| exit: |
| return; |
| } |
| |
| Message *MeshForwarder::PrepareNextDirectTransmission(void) |
| { |
| Message *curMessage, *nextMessage; |
| Error error = kErrorNone; |
| |
| for (curMessage = mSendQueue.GetHead(); curMessage; curMessage = nextMessage) |
| { |
| if (!curMessage->IsDirectTransmission() || curMessage->IsResolvingAddress()) |
| { |
| nextMessage = curMessage->GetNext(); |
| continue; |
| } |
| |
| curMessage->SetDoNotEvict(true); |
| |
| switch (curMessage->GetType()) |
| { |
| case Message::kTypeIp6: |
| error = UpdateIp6Route(*curMessage); |
| break; |
| |
| #if OPENTHREAD_FTD |
| |
| case Message::kType6lowpan: |
| error = UpdateMeshRoute(*curMessage); |
| break; |
| |
| #endif |
| |
| #if OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE |
| case Message::kTypeMacEmptyData: |
| error = kErrorNone; |
| break; |
| #endif |
| |
| default: |
| error = kErrorDrop; |
| break; |
| } |
| |
| curMessage->SetDoNotEvict(false); |
| |
| // the next message may have been evicted during processing (e.g. due to Address Solicit) |
| nextMessage = curMessage->GetNext(); |
| |
| switch (error) |
| { |
| case kErrorNone: |
| ExitNow(); |
| |
| #if OPENTHREAD_FTD |
| case kErrorAddressQuery: |
| curMessage->SetResolvingAddress(true); |
| continue; |
| #endif |
| |
| default: |
| LogMessage(kMessageDrop, *curMessage, error); |
| mSendQueue.DequeueAndFree(*curMessage); |
| continue; |
| } |
| } |
| |
| exit: |
| return curMessage; |
| } |
| |
| Error MeshForwarder::UpdateIp6Route(Message &aMessage) |
| { |
| Mle::MleRouter &mle = Get<Mle::MleRouter>(); |
| Error error = kErrorNone; |
| Ip6::Header ip6Header; |
| |
| mAddMeshHeader = false; |
| |
| IgnoreError(aMessage.Read(0, ip6Header)); |
| |
| VerifyOrExit(!ip6Header.GetSource().IsMulticast(), error = kErrorDrop); |
| |
| GetMacSourceAddress(ip6Header.GetSource(), mMacSource); |
| |
| if (mle.IsDisabled() || mle.IsDetached()) |
| { |
| if (ip6Header.GetDestination().IsLinkLocal() || ip6Header.GetDestination().IsLinkLocalMulticast()) |
| { |
| GetMacDestinationAddress(ip6Header.GetDestination(), mMacDest); |
| } |
| else |
| { |
| error = kErrorDrop; |
| } |
| |
| ExitNow(); |
| } |
| |
| if (ip6Header.GetDestination().IsMulticast()) |
| { |
| // With the exception of MLE multicasts and any other message |
| // with link security disabled, an End Device transmits |
| // multicasts, as IEEE 802.15.4 unicasts to its parent. |
| |
| if (mle.IsChild() && aMessage.IsLinkSecurityEnabled() && !aMessage.IsSubTypeMle()) |
| { |
| mMacDest.SetShort(mle.GetNextHop(Mac::kShortAddrBroadcast)); |
| } |
| else |
| { |
| mMacDest.SetShort(Mac::kShortAddrBroadcast); |
| } |
| } |
| else if (ip6Header.GetDestination().IsLinkLocal()) |
| { |
| GetMacDestinationAddress(ip6Header.GetDestination(), mMacDest); |
| } |
| else if (mle.IsMinimalEndDevice()) |
| { |
| mMacDest.SetShort(mle.GetNextHop(Mac::kShortAddrBroadcast)); |
| } |
| else |
| { |
| #if OPENTHREAD_FTD |
| error = UpdateIp6RouteFtd(ip6Header, aMessage); |
| #else |
| OT_ASSERT(false); |
| #endif |
| } |
| |
| exit: |
| return error; |
| } |
| |
| bool MeshForwarder::GetRxOnWhenIdle(void) const |
| { |
| return Get<Mac::Mac>().GetRxOnWhenIdle(); |
| } |
| |
| void MeshForwarder::SetRxOnWhenIdle(bool aRxOnWhenIdle) |
| { |
| Get<Mac::Mac>().SetRxOnWhenIdle(aRxOnWhenIdle); |
| |
| if (aRxOnWhenIdle) |
| { |
| mDataPollSender.StopPolling(); |
| #if OPENTHREAD_CONFIG_CHILD_SUPERVISION_ENABLE |
| Get<Utils::SupervisionListener>().Stop(); |
| #endif |
| } |
| else |
| { |
| mDataPollSender.StartPolling(); |
| #if OPENTHREAD_CONFIG_CHILD_SUPERVISION_ENABLE |
| Get<Utils::SupervisionListener>().Start(); |
| #endif |
| } |
| } |
| |
| void MeshForwarder::GetMacSourceAddress(const Ip6::Address &aIp6Addr, Mac::Address &aMacAddr) |
| { |
| aIp6Addr.GetIid().ConvertToMacAddress(aMacAddr); |
| |
| if (aMacAddr.GetExtended() != Get<Mac::Mac>().GetExtAddress()) |
| { |
| aMacAddr.SetShort(Get<Mac::Mac>().GetShortAddress()); |
| } |
| } |
| |
| void MeshForwarder::GetMacDestinationAddress(const Ip6::Address &aIp6Addr, Mac::Address &aMacAddr) |
| { |
| if (aIp6Addr.IsMulticast()) |
| { |
| aMacAddr.SetShort(Mac::kShortAddrBroadcast); |
| } |
| else if (Get<Mle::MleRouter>().IsRoutingLocator(aIp6Addr)) |
| { |
| aMacAddr.SetShort(aIp6Addr.GetIid().GetLocator()); |
| } |
| else |
| { |
| aIp6Addr.GetIid().ConvertToMacAddress(aMacAddr); |
| } |
| } |
| |
| Error MeshForwarder::DecompressIp6Header(const uint8_t * aFrame, |
| uint16_t aFrameLength, |
| const Mac::Address &aMacSource, |
| const Mac::Address &aMacDest, |
| Ip6::Header & aIp6Header, |
| uint8_t & aHeaderLength, |
| bool & aNextHeaderCompressed) |
| { |
| Error error = kErrorNone; |
| const uint8_t * start = aFrame; |
| Lowpan::FragmentHeader fragmentHeader; |
| uint16_t fragmentHeaderLength; |
| int headerLength; |
| |
| if (fragmentHeader.ParseFrom(aFrame, aFrameLength, fragmentHeaderLength) == kErrorNone) |
| { |
| // Only the first fragment header is followed by a LOWPAN_IPHC header |
| VerifyOrExit(fragmentHeader.GetDatagramOffset() == 0, error = kErrorNotFound); |
| aFrame += fragmentHeaderLength; |
| aFrameLength -= fragmentHeaderLength; |
| } |
| |
| VerifyOrExit(aFrameLength >= 1 && Lowpan::Lowpan::IsLowpanHc(aFrame), error = kErrorNotFound); |
| headerLength = Get<Lowpan::Lowpan>().DecompressBaseHeader(aIp6Header, aNextHeaderCompressed, aMacSource, aMacDest, |
| aFrame, aFrameLength); |
| |
| VerifyOrExit(headerLength > 0, error = kErrorParse); |
| aHeaderLength = static_cast<uint8_t>(aFrame - start) + static_cast<uint8_t>(headerLength); |
| |
| exit: |
| return error; |
| } |
| |
| Mac::TxFrame *MeshForwarder::HandleFrameRequest(Mac::TxFrames &aTxFrames) |
| { |
| Mac::TxFrame *frame = nullptr; |
| bool addFragHeader = false; |
| |
| VerifyOrExit(mEnabled && (mSendMessage != nullptr)); |
| |
| #if OPENTHREAD_CONFIG_MULTI_RADIO |
| frame = &Get<RadioSelector>().SelectRadio(*mSendMessage, mMacDest, aTxFrames); |
| |
| // If multi-radio link is supported, when sending frame with link |
| // security enabled, Fragment Header is always included (even if |
| // the message is small and does not require 6LoWPAN fragmentation). |
| // This allows the Fragment Header's tag to be used to detect and |
| // suppress duplicate received frames over different radio links. |
| |
| if (mSendMessage->IsLinkSecurityEnabled()) |
| { |
| addFragHeader = true; |
| } |
| #else |
| frame = &aTxFrames.GetTxFrame(); |
| #endif |
| |
| mSendBusy = true; |
| |
| switch (mSendMessage->GetType()) |
| { |
| case Message::kTypeIp6: |
| if (mSendMessage->GetSubType() == Message::kSubTypeMleDiscoverRequest) |
| { |
| frame = Get<Mle::DiscoverScanner>().PrepareDiscoveryRequestFrame(*frame); |
| VerifyOrExit(frame != nullptr); |
| } |
| #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE |
| if (Get<Mac::Mac>().IsCslEnabled() && mSendMessage->IsSubTypeMle()) |
| { |
| mSendMessage->SetLinkSecurityEnabled(true); |
| } |
| #endif |
| mMessageNextOffset = PrepareDataFrame(*frame, *mSendMessage, mMacSource, mMacDest, mAddMeshHeader, mMeshSource, |
| mMeshDest, addFragHeader); |
| |
| if ((mSendMessage->GetSubType() == Message::kSubTypeMleChildIdRequest) && mSendMessage->IsLinkSecurityEnabled()) |
| { |
| LogNote("Child ID Request requires fragmentation, aborting tx"); |
| mMessageNextOffset = mSendMessage->GetLength(); |
| ExitNow(frame = nullptr); |
| } |
| |
| break; |
| |
| #if OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE |
| case Message::kTypeMacEmptyData: |
| { |
| Mac::Address macDestAddr; |
| |
| macDestAddr.SetShort(Get<Mle::MleRouter>().GetParent().GetRloc16()); |
| PrepareEmptyFrame(*frame, macDestAddr, /* aAckRequest */ true); |
| } |
| break; |
| #endif |
| |
| #if OPENTHREAD_FTD |
| |
| case Message::kType6lowpan: |
| SendMesh(*mSendMessage, *frame); |
| break; |
| |
| case Message::kTypeSupervision: |
| // A direct supervision message is possible in the case where |
| // a sleepy child switches its mode (becomes non-sleepy) while |
| // there is a pending indirect supervision message in the send |
| // queue for it. The message would be then converted to a |
| // direct tx. |
| |
| OT_FALL_THROUGH; |
| #endif |
| |
| default: |
| mMessageNextOffset = mSendMessage->GetLength(); |
| ExitNow(frame = nullptr); |
| } |
| |
| frame->SetIsARetransmission(false); |
| |
| exit: |
| return frame; |
| } |
| |
| // This method constructs a MAC data from from a given IPv6 message. |
| // |
| // This method handles generation of MAC header, mesh header (if |
| // requested), lowpan compression of IPv6 header, lowpan fragmentation |
| // header (if message requires fragmentation or if it is explicitly |
| // requested by setting `aAddFragHeader` to `true`) It uses the |
| // message offset to construct next fragments. This method enables |
| // link security when message is MLE type and requires fragmentation. |
| // It returns the next offset into the message after the prepared |
| // frame. |
| // |
| uint16_t MeshForwarder::PrepareDataFrame(Mac::TxFrame & aFrame, |
| Message & aMessage, |
| const Mac::Address &aMacSource, |
| const Mac::Address &aMacDest, |
| bool aAddMeshHeader, |
| uint16_t aMeshSource, |
| uint16_t aMeshDest, |
| bool aAddFragHeader) |
| { |
| uint16_t fcf; |
| uint8_t *payload; |
| uint8_t headerLength; |
| uint16_t maxPayloadLength; |
| uint16_t payloadLength; |
| uint16_t fragmentLength; |
| uint16_t dstpan; |
| uint8_t secCtl; |
| uint16_t nextOffset; |
| bool iePresent = CalcIePresent(&aMessage); |
| |
| start: |
| |
| // Initialize MAC header |
| fcf = Mac::Frame::kFcfFrameData; |
| |
| fcf |= (aMacDest.IsShort()) ? Mac::Frame::kFcfDstAddrShort : Mac::Frame::kFcfDstAddrExt; |
| fcf |= (aMacSource.IsShort()) ? Mac::Frame::kFcfSrcAddrShort : Mac::Frame::kFcfSrcAddrExt; |
| |
| if (iePresent) |
| { |
| fcf |= Mac::Frame::kFcfIePresent; |
| } |
| |
| fcf |= CalcFrameVersion(Get<NeighborTable>().FindNeighbor(aMacDest), iePresent); |
| |
| // All unicast frames request ACK |
| if (aMacDest.IsExtended() || !aMacDest.IsBroadcast()) |
| { |
| fcf |= Mac::Frame::kFcfAckRequest; |
| } |
| |
| if (aMessage.IsLinkSecurityEnabled()) |
| { |
| fcf |= Mac::Frame::kFcfSecurityEnabled; |
| |
| switch (aMessage.GetSubType()) |
| { |
| case Message::kSubTypeJoinerEntrust: |
| secCtl = static_cast<uint8_t>(Mac::Frame::kKeyIdMode0); |
| break; |
| |
| case Message::kSubTypeMleAnnounce: |
| secCtl = static_cast<uint8_t>(Mac::Frame::kKeyIdMode2); |
| break; |
| |
| default: |
| secCtl = static_cast<uint8_t>(Mac::Frame::kKeyIdMode1); |
| break; |
| } |
| |
| secCtl |= Mac::Frame::kSecEncMic32; |
| } |
| else |
| { |
| secCtl = Mac::Frame::kSecNone; |
| } |
| |
| dstpan = Get<Mac::Mac>().GetPanId(); |
| |
| switch (aMessage.GetSubType()) |
| { |
| case Message::kSubTypeMleAnnounce: |
| aFrame.SetChannel(aMessage.GetChannel()); |
| dstpan = Mac::kPanIdBroadcast; |
| break; |
| |
| case Message::kSubTypeMleDiscoverRequest: |
| case Message::kSubTypeMleDiscoverResponse: |
| dstpan = aMessage.GetPanId(); |
| break; |
| |
| default: |
| break; |
| } |
| |
| // Handle special case in 15.4-2015: |
| // Dest Address: Extended |
| // Source Address: Extended |
| // Dest PanId: Present |
| // Src Panid: Not Present |
| // Pan ID Compression: 0 |
| if (dstpan == Get<Mac::Mac>().GetPanId() && |
| ((fcf & Mac::Frame::kFcfFrameVersionMask) == Mac::Frame::kFcfFrameVersion2006 || |
| (fcf & Mac::Frame::kFcfDstAddrMask) != Mac::Frame::kFcfDstAddrExt || |
| (fcf & Mac::Frame::kFcfSrcAddrMask) != Mac::Frame::kFcfSrcAddrExt)) |
| { |
| #if OPENTHREAD_CONFIG_MAC_HEADER_IE_SUPPORT |
| // Handle a special case in IEEE 802.15.4-2015, when Pan ID Compression is 0, but Src Pan ID is not present: |
| // Dest Address: Extended |
| // Src Address: Extended |
| // Dest Pan ID: Present |
| // Src Pan ID: Not Present |
| // Pan ID Compression: 0 |
| |
| if ((fcf & Mac::Frame::kFcfFrameVersionMask) != Mac::Frame::kFcfFrameVersion2015 || |
| (fcf & Mac::Frame::kFcfDstAddrMask) != Mac::Frame::kFcfDstAddrExt || |
| (fcf & Mac::Frame::kFcfSrcAddrMask) != Mac::Frame::kFcfSrcAddrExt) |
| #endif |
| { |
| fcf |= Mac::Frame::kFcfPanidCompression; |
| } |
| } |
| |
| aFrame.InitMacHeader(fcf, secCtl); |
| |
| if (aFrame.IsDstPanIdPresent()) |
| { |
| aFrame.SetDstPanId(dstpan); |
| } |
| |
| IgnoreError(aFrame.SetSrcPanId(Get<Mac::Mac>().GetPanId())); |
| aFrame.SetDstAddr(aMacDest); |
| aFrame.SetSrcAddr(aMacSource); |
| |
| #if OPENTHREAD_CONFIG_MAC_HEADER_IE_SUPPORT |
| if (iePresent) |
| { |
| AppendHeaderIe(&aMessage, aFrame); |
| } |
| #endif |
| |
| payload = aFrame.GetPayload(); |
| maxPayloadLength = aFrame.GetMaxPayloadLength(); |
| |
| headerLength = 0; |
| |
| #if OPENTHREAD_FTD |
| |
| // Initialize Mesh header |
| if (aAddMeshHeader) |
| { |
| Mle::MleRouter & mle = Get<Mle::MleRouter>(); |
| Lowpan::MeshHeader meshHeader; |
| uint16_t meshHeaderLength; |
| uint8_t hopsLeft; |
| |
| // Mesh Header frames are forwarded by routers over multiple |
| // hops to reach a final destination. The forwarding path can |
| // have routers supporting different radio links with varying |
| // MTU sizes. Since the originator of the frame does not know the |
| // path and the MTU sizes of supported radio links by the routers |
| // in the path, we limit the max payload length of a Mesh Header |
| // frame to a fixed minimum value (derived from 15.4 radio) |
| // ensuring it can be handled by any radio link. |
| // |
| // Maximum payload length is calculated by subtracting the frame |
| // header and footer lengths from the MTU size. The footer |
| // length is derived by removing the `aFrame.GetFcsSize()` and |
| // then adding the fixed `kMeshHeaderFrameFcsSize` instead |
| // (updating the FCS size in the calculation of footer length). |
| |
| maxPayloadLength = kMeshHeaderFrameMtu - aFrame.GetHeaderLength() - |
| (aFrame.GetFooterLength() - aFrame.GetFcsSize() + kMeshHeaderFrameFcsSize); |
| |
| if (mle.IsChild()) |
| { |
| // REED sets hopsLeft to max (16) + 1. It does not know the route cost. |
| hopsLeft = Mle::kMaxRouteCost + 1; |
| } |
| else |
| { |
| // Calculate the number of predicted hops. |
| hopsLeft = mle.GetRouteCost(aMeshDest); |
| |
| if (hopsLeft != Mle::kMaxRouteCost) |
| { |
| hopsLeft += mle.GetLinkCost(Mle::Mle::RouterIdFromRloc16(mle.GetNextHop(aMeshDest))); |
| } |
| else |
| { |
| // In case there is no route to the destination router (only link). |
| hopsLeft = mle.GetLinkCost(Mle::Mle::RouterIdFromRloc16(aMeshDest)); |
| } |
| } |
| |
| // The hopsLft field MUST be incremented by one if the |
| // destination RLOC16 is not that of an active Router. |
| if (!Mle::Mle::IsActiveRouter(aMeshDest)) |
| { |
| hopsLeft += 1; |
| } |
| |
| meshHeader.Init(aMeshSource, aMeshDest, hopsLeft + Lowpan::MeshHeader::kAdditionalHopsLeft); |
| meshHeaderLength = meshHeader.WriteTo(payload); |
| payload += meshHeaderLength; |
| headerLength += meshHeaderLength; |
| } |
| |
| #endif |
| |
| // Compress IPv6 Header |
| if (aMessage.GetOffset() == 0) |
| { |
| Lowpan::BufferWriter buffer(payload, |
| maxPayloadLength - headerLength - Lowpan::FragmentHeader::kFirstFragmentHeaderSize); |
| uint8_t hcLength; |
| Mac::Address meshSource, meshDest; |
| |
| if (aAddMeshHeader) |
| { |
| meshSource.SetShort(aMeshSource); |
| meshDest.SetShort(aMeshDest); |
| } |
| else |
| { |
| meshSource = aMacSource; |
| meshDest = aMacDest; |
| } |
| |
| SuccessOrAssert(Get<Lowpan::Lowpan>().Compress(aMessage, meshSource, meshDest, buffer)); |
| |
| hcLength = static_cast<uint8_t>(buffer.GetWritePointer() - payload); |
| headerLength += hcLength; |
| payloadLength = aMessage.GetLength() - aMessage.GetOffset(); |
| fragmentLength = maxPayloadLength - headerLength; |
| |
| if ((payloadLength > fragmentLength) || aAddFragHeader) |
| { |
| Lowpan::FragmentHeader fragmentHeader; |
| |
| if ((!aMessage.IsLinkSecurityEnabled()) && aMessage.IsSubTypeMle()) |
| { |
| // Enable security and try again. |
| aMessage.SetOffset(0); |
| aMessage.SetLinkSecurityEnabled(true); |
| goto start; |
| } |
| |
| // Write Fragment header |
| if (aMessage.GetDatagramTag() == 0) |
| { |
| // Avoid using datagram tag value 0, which indicates the tag has not been set |
| if (mFragTag == 0) |
| { |
| mFragTag++; |
| } |
| |
| aMessage.SetDatagramTag(mFragTag++); |
| } |
| |
| memmove(payload + Lowpan::FragmentHeader::kFirstFragmentHeaderSize, payload, hcLength); |
| |
| fragmentHeader.InitFirstFragment(aMessage.GetLength(), static_cast<uint16_t>(aMessage.GetDatagramTag())); |
| fragmentHeader.WriteTo(payload); |
| |
| payload += Lowpan::FragmentHeader::kFirstFragmentHeaderSize; |
| headerLength += Lowpan::FragmentHeader::kFirstFragmentHeaderSize; |
| |
| fragmentLength = maxPayloadLength - headerLength; |
| |
| if (payloadLength > fragmentLength) |
| { |
| payloadLength = fragmentLength & ~0x7; |
| } |
| } |
| |
| payload += hcLength; |
| |
| // copy IPv6 Payload |
| aMessage.ReadBytes(aMessage.GetOffset(), payload, payloadLength); |
| aFrame.SetPayloadLength(headerLength + payloadLength); |
| |
| nextOffset = aMessage.GetOffset() + payloadLength; |
| aMessage.SetOffset(0); |
| } |
| else |
| { |
| Lowpan::FragmentHeader fragmentHeader; |
| uint16_t fragmentHeaderLength; |
| |
| payloadLength = aMessage.GetLength() - aMessage.GetOffset(); |
| |
| // Write Fragment header |
| fragmentHeader.Init(aMessage.GetLength(), static_cast<uint16_t>(aMessage.GetDatagramTag()), |
| aMessage.GetOffset()); |
| fragmentHeaderLength = fragmentHeader.WriteTo(payload); |
| |
| payload += fragmentHeaderLength; |
| headerLength += fragmentHeaderLength; |
| |
| fragmentLength = maxPayloadLength - headerLength; |
| |
| if (payloadLength > fragmentLength) |
| { |
| payloadLength = (fragmentLength & ~0x7); |
| } |
| |
| // Copy IPv6 Payload |
| aMessage.ReadBytes(aMessage.GetOffset(), payload, payloadLength); |
| aFrame.SetPayloadLength(headerLength + payloadLength); |
| |
| nextOffset = aMessage.GetOffset() + payloadLength; |
| } |
| |
| if (nextOffset < aMessage.GetLength()) |
| { |
| aFrame.SetFramePending(true); |
| #if OPENTHREAD_CONFIG_TIME_SYNC_ENABLE |
| aMessage.SetTimeSync(false); |
| #endif |
| } |
| |
| return nextOffset; |
| } |
| |
| Neighbor *MeshForwarder::UpdateNeighborOnSentFrame(Mac::TxFrame & aFrame, |
| Error aError, |
| const Mac::Address &aMacDest, |
| bool aIsDataPoll) |
| { |
| OT_UNUSED_VARIABLE(aIsDataPoll); |
| |
| Neighbor *neighbor = nullptr; |
| |
| VerifyOrExit(mEnabled); |
| |
| neighbor = Get<NeighborTable>().FindNeighbor(aMacDest); |
| VerifyOrExit(neighbor != nullptr); |
| |
| VerifyOrExit(aFrame.GetAckRequest()); |
| |
| #if OPENTHREAD_CONFIG_RADIO_LINK_TREL_ENABLE |
| // TREL radio link uses deferred ack model. We ignore |
| // `SendDone` event from `Mac` layer with success status and |
| // wait for deferred ack callback instead. |
| #if OPENTHREAD_CONFIG_MULTI_RADIO |
| if (aFrame.GetRadioType() == Mac::kRadioTypeTrel) |
| #endif |
| { |
| VerifyOrExit(aError != kErrorNone); |
| } |
| #endif // OPENTHREAD_CONFIG_RADIO_LINK_TREL_ENABLE |
| |
| #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE |
| if ((aFrame.GetHeaderIe(Mac::CslIe::kHeaderIeId) != nullptr) && aIsDataPoll) |
| { |
| UpdateNeighborLinkFailures(*neighbor, aError, /* aAllowNeighborRemove */ true, |
| /* aFailLimit */ Mle::kFailedCslDataPollTransmissions); |
| } |
| else |
| #endif |
| { |
| UpdateNeighborLinkFailures(*neighbor, aError, /* aAllowNeighborRemove */ true); |
| } |
| |
| exit: |
| return neighbor; |
| } |
| |
| void MeshForwarder::UpdateNeighborLinkFailures(Neighbor &aNeighbor, |
| Error aError, |
| bool aAllowNeighborRemove, |
| uint8_t aFailLimit) |
| { |
| // Update neighbor `LinkFailures` counter on ack error. |
| |
| if (aError == kErrorNone) |
| { |
| aNeighbor.ResetLinkFailures(); |
| } |
| else if (aError == kErrorNoAck) |
| { |
| aNeighbor.IncrementLinkFailures(); |
| |
| if (aAllowNeighborRemove && (Mle::Mle::IsActiveRouter(aNeighbor.GetRloc16())) && |
| (aNeighbor.GetLinkFailures() >= aFailLimit)) |
| { |
| Get<Mle::MleRouter>().RemoveRouterLink(static_cast<Router &>(aNeighbor)); |
| } |
| } |
| } |
| |
| #if OPENTHREAD_CONFIG_RADIO_LINK_TREL_ENABLE |
| void MeshForwarder::HandleDeferredAck(Neighbor &aNeighbor, Error aError) |
| { |
| bool allowNeighborRemove = true; |
| |
| VerifyOrExit(mEnabled); |
| |
| if (aError == kErrorNoAck) |
| { |
| LogInfo("Deferred ack timeout on trel for neighbor %s rloc16:0x%04x", |
| aNeighbor.GetExtAddress().ToString().AsCString(), aNeighbor.GetRloc16()); |
| } |
| |
| #if OPENTHREAD_CONFIG_MULTI_RADIO |
| // In multi radio mode, `RadioSelector` will update the neighbor's |
| // link failure counter and removes the neighbor if required. |
| Get<RadioSelector>().UpdateOnDeferredAck(aNeighbor, aError, allowNeighborRemove); |
| #else |
| UpdateNeighborLinkFailures(aNeighbor, aError, allowNeighborRemove); |
| #endif |
| |
| exit: |
| return; |
| } |
| #endif // #if OPENTHREAD_CONFIG_RADIO_LINK_TREL_ENABLE |
| |
| void MeshForwarder::HandleSentFrame(Mac::TxFrame &aFrame, Error aError) |
| { |
| Neighbor * neighbor = nullptr; |
| Mac::Address macDest; |
| |
| OT_ASSERT((aError == kErrorNone) || (aError == kErrorChannelAccessFailure) || (aError == kErrorAbort) || |
| (aError == kErrorNoAck)); |
| |
| mSendBusy = false; |
| |
| VerifyOrExit(mEnabled); |
| |
| #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_MAC_COLLISION_AVOIDANCE_DELAY_ENABLE |
| if (mDelayNextTx && (aError == kErrorNone)) |
| { |
| mTxDelayTimer.Start(kTxDelayInterval); |
| LogDebg("Start tx delay timer for %u msec", kTxDelayInterval); |
| } |
| else |
| { |
| mDelayNextTx = false; |
| } |
| #endif |
| |
| if (!aFrame.IsEmpty()) |
| { |
| IgnoreError(aFrame.GetDstAddr(macDest)); |
| neighbor = UpdateNeighborOnSentFrame(aFrame, aError, macDest); |
| } |
| |
| UpdateSendMessage(aError, macDest, neighbor); |
| |
| exit: |
| return; |
| } |
| |
| void MeshForwarder::UpdateSendMessage(Error aFrameTxError, Mac::Address &aMacDest, Neighbor *aNeighbor) |
| { |
| Error txError = aFrameTxError; |
| |
| VerifyOrExit(mSendMessage != nullptr); |
| |
| OT_ASSERT(mSendMessage->IsDirectTransmission()); |
| |
| if (aFrameTxError != kErrorNone) |
| { |
| // If the transmission of any fragment frame fails, |
| // the overall message transmission is considered |
| // as failed |
| |
| mSendMessage->SetTxSuccess(false); |
| |
| #if OPENTHREAD_CONFIG_DROP_MESSAGE_ON_FRAGMENT_TX_FAILURE |
| |
| // We set the NextOffset to end of message to avoid sending |
| // any remaining fragments in the message. |
| |
| mMessageNextOffset = mSendMessage->GetLength(); |
| #endif |
| } |
| |
| if (mMessageNextOffset < mSendMessage->GetLength()) |
| { |
| mSendMessage->SetOffset(mMessageNextOffset); |
| ExitNow(); |
| } |
| |
| txError = aFrameTxError; |
| |
| mSendMessage->ClearDirectTransmission(); |
| mSendMessage->SetOffset(0); |
| |
| if (aNeighbor != nullptr) |
| { |
| aNeighbor->GetLinkInfo().AddMessageTxStatus(mSendMessage->GetTxSuccess()); |
| } |
| |
| #if !OPENTHREAD_CONFIG_DROP_MESSAGE_ON_FRAGMENT_TX_FAILURE |
| |
| // When `CONFIG_DROP_MESSAGE_ON_FRAGMENT_TX_FAILURE` is |
| // disabled, all fragment frames of a larger message are |
| // sent even if the transmission of an earlier fragment fail. |
| // Note that `GetTxSuccess() tracks the tx success of the |
| // entire message, while `aFrameTxError` represents the error |
| // status of the last fragment frame transmission. |
| |
| if (!mSendMessage->GetTxSuccess() && (txError == kErrorNone)) |
| { |
| txError = kErrorFailed; |
| } |
| #endif |
| |
| #if OPENTHREAD_CONFIG_HISTORY_TRACKER_ENABLE |
| Get<Utils::HistoryTracker>().RecordTxMessage(*mSendMessage, aMacDest); |
| #endif |
| |
| LogMessage(kMessageTransmit, *mSendMessage, txError, &aMacDest); |
| |
| if (mSendMessage->GetType() == Message::kTypeIp6) |
| { |
| if (mSendMessage->GetTxSuccess()) |
| { |
| mIpCounters.mTxSuccess++; |
| } |
| else |
| { |
| mIpCounters.mTxFailure++; |
| } |
| } |
| |
| switch (mSendMessage->GetSubType()) |
| { |
| case Message::kSubTypeMleDiscoverRequest: |
| // Note that `HandleDiscoveryRequestFrameTxDone()` may update |
| // `mSendMessage` and mark it again for direct transmission. |
| Get<Mle::DiscoverScanner>().HandleDiscoveryRequestFrameTxDone(*mSendMessage); |
| break; |
| |
| case Message::kSubTypeMleChildIdRequest: |
| if (mSendMessage->IsLinkSecurityEnabled()) |
| { |
| // If the Child ID Request requires fragmentation and therefore |
| // link layer security, the frame transmission will be aborted. |
| // When the message is being freed, we signal to MLE to prepare a |
| // shorter Child ID Request message (by only including mesh-local |
| // address in the Address Registration TLV). |
| |
| LogInfo("Requesting shorter `Child ID Request`"); |
| Get<Mle::Mle>().RequestShorterChildIdRequest(); |
| } |
| |
| break; |
| |
| default: |
| break; |
| } |
| |
| RemoveMessageIfNoPendingTx(*mSendMessage); |
| |
| exit: |
| mScheduleTransmissionTask.Post(); |
| } |
| |
| void MeshForwarder::RemoveMessageIfNoPendingTx(Message &aMessage) |
| { |
| VerifyOrExit(!aMessage.IsDirectTransmission() && !aMessage.IsChildPending()); |
| |
| if (mSendMessage == &aMessage) |
| { |
| mSendMessage = nullptr; |
| mMessageNextOffset = 0; |
| } |
| |
| mSendQueue.DequeueAndFree(aMessage); |
| |
| exit: |
| return; |
| } |
| |
| void MeshForwarder::HandleReceivedFrame(Mac::RxFrame &aFrame) |
| { |
| ThreadLinkInfo linkInfo; |
| Mac::Address macDest; |
| Mac::Address macSource; |
| uint8_t * payload; |
| uint16_t payloadLength; |
| Error error = kErrorNone; |
| |
| VerifyOrExit(mEnabled, error = kErrorInvalidState); |
| |
| SuccessOrExit(error = aFrame.GetSrcAddr(macSource)); |
| SuccessOrExit(error = aFrame.GetDstAddr(macDest)); |
| |
| linkInfo.SetFrom(aFrame); |
| |
| payload = aFrame.GetPayload(); |
| payloadLength = aFrame.GetPayloadLength(); |
| |
| #if OPENTHREAD_CONFIG_CHILD_SUPERVISION_ENABLE |
| Get<Utils::SupervisionListener>().UpdateOnReceive(macSource, linkInfo.IsLinkSecurityEnabled()); |
| #endif |
| |
| switch (aFrame.GetType()) |
| { |
| case Mac::Frame::kFcfFrameData: |
| if (Lowpan::MeshHeader::IsMeshHeader(payload, payloadLength)) |
| { |
| #if OPENTHREAD_FTD |
| HandleMesh(payload, payloadLength, macSource, linkInfo); |
| #endif |
| } |
| else if (Lowpan::FragmentHeader::IsFragmentHeader(payload, payloadLength)) |
| { |
| HandleFragment(payload, payloadLength, macSource, macDest, linkInfo); |
| } |
| else if (payloadLength >= 1 && Lowpan::Lowpan::IsLowpanHc(payload)) |
| { |
| HandleLowpanHC(payload, payloadLength, macSource, macDest, linkInfo); |
| } |
| else |
| { |
| VerifyOrExit(payloadLength == 0, error = kErrorNotLowpanDataFrame); |
| |
| LogFrame("Received empty payload frame", aFrame, kErrorNone); |
| } |
| |
| break; |
| |
| case Mac::Frame::kFcfFrameBeacon: |
| break; |
| |
| default: |
| error = kErrorDrop; |
| break; |
| } |
| |
| exit: |
| |
| if (error != kErrorNone) |
| { |
| LogFrame("Dropping rx frame", aFrame, error); |
| } |
| } |
| |
| void MeshForwarder::HandleFragment(const uint8_t * aFrame, |
| uint16_t aFrameLength, |
| const Mac::Address & aMacSource, |
| const Mac::Address & aMacDest, |
| const ThreadLinkInfo &aLinkInfo) |
| { |
| Error error = kErrorNone; |
| Lowpan::FragmentHeader fragmentHeader; |
| uint16_t fragmentHeaderLength; |
| Message * message = nullptr; |
| |
| // Check the fragment header |
| SuccessOrExit(error = fragmentHeader.ParseFrom(aFrame, aFrameLength, fragmentHeaderLength)); |
| aFrame += fragmentHeaderLength; |
| aFrameLength -= fragmentHeaderLength; |
| |
| #if OPENTHREAD_CONFIG_MULTI_RADIO |
| |
| if (aLinkInfo.mLinkSecurity) |
| { |
| Neighbor *neighbor = Get<NeighborTable>().FindNeighbor(aMacSource, Neighbor::kInStateAnyExceptInvalid); |
| |
| if (neighbor != nullptr) |
| { |
| uint16_t tag = fragmentHeader.GetDatagramTag(); |
| |
| if (neighbor->IsLastRxFragmentTagSet()) |
| { |
| VerifyOrExit(!neighbor->IsLastRxFragmentTagAfter(tag), error = kErrorDuplicated); |
| |
| if (neighbor->GetLastRxFragmentTag() == tag) |
| { |
| VerifyOrExit(fragmentHeader.GetDatagramOffset() != 0, error = kErrorDuplicated); |
| |
| // Duplication suppression for a "next fragment" is handled |
| // by the code below where the the datagram offset is |
| // checked against the offset of the corresponding message |
| // (same datagram tag and size) in Reassembly List. Note |
| // that if there is no matching message in the Reassembly |
| // List (e.g., in case the message is already fully |
| // assembled) the received "next fragment" frame would be |
| // dropped. |
| } |
| } |
| |
| neighbor->SetLastRxFragmentTag(tag); |
| } |
| } |
| |
| #endif // OPENTHREAD_CONFIG_MULTI_RADIO |
| |
| if (fragmentHeader.GetDatagramOffset() == 0) |
| { |
| uint16_t datagramSize = fragmentHeader.GetDatagramSize(); |
| |
| #if OPENTHREAD_FTD |
| UpdateRoutes(aFrame, aFrameLength, aMacSource, aMacDest); |
| #endif |
| |
| error = FrameToMessage(aFrame, aFrameLength, datagramSize, aMacSource, aMacDest, message); |
| SuccessOrExit(error); |
| |
| VerifyOrExit(datagramSize >= message->GetLength(), error = kErrorParse); |
| error = message->SetLength(datagramSize); |
| SuccessOrExit(error); |
| |
| message->SetDatagramTag(fragmentHeader.GetDatagramTag()); |
| message->SetTimestampToNow(); |
| message->SetLinkInfo(aLinkInfo); |
| |
| VerifyOrExit(Get<Ip6::Filter>().Accept(*message), error = kErrorDrop); |
| |
| #if OPENTHREAD_FTD |
| SendIcmpErrorIfDstUnreach(*message, aMacSource, aMacDest); |
| #endif |
| |
| // Allow re-assembly of only one message at a time on a SED by clearing |
| // any remaining fragments in reassembly list upon receiving of a new |
| // (secure) first fragment. |
| |
| if (!GetRxOnWhenIdle() && message->IsLinkSecurityEnabled()) |
| { |
| ClearReassemblyList(); |
| } |
| |
| mReassemblyList.Enqueue(*message); |
| |
| Get<TimeTicker>().RegisterReceiver(TimeTicker::kMeshForwarder); |
| } |
| else // Received frame is a "next fragment". |
| { |
| for (Message &msg : mReassemblyList) |
| { |
| // Security Check: only consider reassembly buffers that had the same Security Enabled setting. |
| if (msg.GetLength() == fragmentHeader.GetDatagramSize() && |
| msg.GetDatagramTag() == fragmentHeader.GetDatagramTag() && |
| msg.GetOffset() == fragmentHeader.GetDatagramOffset() && |
| msg.GetOffset() + aFrameLength <= fragmentHeader.GetDatagramSize() && |
| msg.IsLinkSecurityEnabled() == aLinkInfo.IsLinkSecurityEnabled()) |
| { |
| message = &msg; |
| break; |
| } |
| } |
| |
| // For a sleepy-end-device, if we receive a new (secure) next fragment |
| // with a non-matching fragmentation offset or tag, it indicates that |
| // we have either missed a fragment, or the parent has moved to a new |
| // message with a new tag. In either case, we can safely clear any |
| // remaining fragments stored in the reassembly list. |
| |
| if (!GetRxOnWhenIdle() && (message == nullptr) && aLinkInfo.IsLinkSecurityEnabled()) |
| { |
| ClearReassemblyList(); |
| } |
| |
| VerifyOrExit(message != nullptr, error = kErrorDrop); |
| |
| message->WriteBytes(message->GetOffset(), aFrame, aFrameLength); |
| message->MoveOffset(aFrameLength); |
| message->AddRss(aLinkInfo.GetRss()); |
| #if OPENTHREAD_CONFIG_MLE_LINK_METRICS_SUBJECT_ENABLE |
| message->AddLqi(aLinkInfo.GetLqi()); |
| #endif |
| message->SetTimestampToNow(); |
| } |
| |
| exit: |
| |
| if (error == kErrorNone) |
| { |
| if (message->GetOffset() >= message->GetLength()) |
| { |
| mReassemblyList.Dequeue(*message); |
| IgnoreError(HandleDatagram(*message, aLinkInfo, aMacSource)); |
| } |
| } |
| else |
| { |
| LogFragmentFrameDrop(error, aFrameLength, aMacSource, aMacDest, fragmentHeader, |
| aLinkInfo.IsLinkSecurityEnabled()); |
| FreeMessage(message); |
| } |
| } |
| |
| void MeshForwarder::ClearReassemblyList(void) |
| { |
| for (Message &message : mReassemblyList) |
| { |
| LogMessage(kMessageReassemblyDrop, message, kErrorNoFrameReceived); |
| |
| if (message.GetType() == Message::kTypeIp6) |
| { |
| mIpCounters.mRxFailure++; |
| } |
| |
| mReassemblyList.DequeueAndFree(message); |
| } |
| } |
| |
| void MeshForwarder::HandleTimeTick(void) |
| { |
| bool contineRxingTicks = false; |
| |
| #if OPENTHREAD_FTD |
| contineRxingTicks = mFragmentPriorityList.UpdateOnTimeTick(); |
| #endif |
| |
| contineRxingTicks = UpdateReassemblyList() || contineRxingTicks; |
| |
| if (!contineRxingTicks) |
| { |
| Get<TimeTicker>().UnregisterReceiver(TimeTicker::kMeshForwarder); |
| } |
| } |
| |
| bool MeshForwarder::UpdateReassemblyList(void) |
| { |
| TimeMilli now = TimerMilli::GetNow(); |
| |
| for (Message &message : mReassemblyList) |
| { |
| if (now - message.GetTimestamp() >= TimeMilli::SecToMsec(kReassemblyTimeout)) |
| { |
| LogMessage(kMessageReassemblyDrop, message, kErrorReassemblyTimeout); |
| |
| if (message.GetType() == Message::kTypeIp6) |
| { |
| mIpCounters.mRxFailure++; |
| } |
| |
| mReassemblyList.DequeueAndFree(message); |
| } |
| } |
| |
| return mReassemblyList.GetHead() != nullptr; |
| } |
| |
| Error MeshForwarder::FrameToMessage(const uint8_t * aFrame, |
| uint16_t aFrameLength, |
| uint16_t aDatagramSize, |
| const Mac::Address &aMacSource, |
| const Mac::Address &aMacDest, |
| Message *& aMessage) |
| { |
| Error error = kErrorNone; |
| int headerLength; |
| Message::Priority priority; |
| |
| error = GetFramePriority(aFrame, aFrameLength, aMacSource, aMacDest, priority); |
| SuccessOrExit(error); |
| |
| aMessage = Get<MessagePool>().Allocate(Message::kTypeIp6, /* aReserveHeader */ 0, Message::Settings(priority)); |
| VerifyOrExit(aMessage, error = kErrorNoBufs); |
| |
| headerLength = |
| Get<Lowpan::Lowpan>().Decompress(*aMessage, aMacSource, aMacDest, aFrame, aFrameLength, aDatagramSize); |
| VerifyOrExit(headerLength > 0, error = kErrorParse); |
| |
| aFrame += headerLength; |
| aFrameLength -= static_cast<uint16_t>(headerLength); |
| |
| SuccessOrExit(error = aMessage->SetLength(aMessage->GetLength() + aFrameLength)); |
| aMessage->WriteBytes(aMessage->GetOffset(), aFrame, aFrameLength); |
| aMessage->MoveOffset(aFrameLength); |
| |
| exit: |
| return error; |
| } |
| |
| void MeshForwarder::HandleLowpanHC(const uint8_t * aFrame, |
| uint16_t aFrameLength, |
| const Mac::Address & aMacSource, |
| const Mac::Address & aMacDest, |
| const ThreadLinkInfo &aLinkInfo) |
| { |
| Error error = kErrorNone; |
| Message *message = nullptr; |
| |
| #if OPENTHREAD_FTD |
| UpdateRoutes(aFrame, aFrameLength, aMacSource, aMacDest); |
| #endif |
| |
| SuccessOrExit(error = FrameToMessage(aFrame, aFrameLength, 0, aMacSource, aMacDest, message)); |
| |
| message->SetLinkInfo(aLinkInfo); |
| |
| VerifyOrExit(Get<Ip6::Filter>().Accept(*message), error = kErrorDrop); |
| |
| #if OPENTHREAD_FTD |
| SendIcmpErrorIfDstUnreach(*message, aMacSource, aMacDest); |
| #endif |
| |
| exit: |
| |
| if (error == kErrorNone) |
| { |
| IgnoreError(HandleDatagram(*message, aLinkInfo, aMacSource)); |
| } |
| else |
| { |
| LogLowpanHcFrameDrop(error, aFrameLength, aMacSource, aMacDest, aLinkInfo.IsLinkSecurityEnabled()); |
| FreeMessage(message); |
| } |
| } |
| |
| Error MeshForwarder::HandleDatagram(Message &aMessage, const ThreadLinkInfo &aLinkInfo, const Mac::Address &aMacSource) |
| { |
| ThreadNetif &netif = Get<ThreadNetif>(); |
| |
| #if OPENTHREAD_CONFIG_HISTORY_TRACKER_ENABLE |
| Get<Utils::HistoryTracker>().RecordRxMessage(aMessage, aMacSource); |
| #endif |
| |
| LogMessage(kMessageReceive, aMessage, kErrorNone, &aMacSource); |
| |
| if (aMessage.GetType() == Message::kTypeIp6) |
| { |
| mIpCounters.mRxSuccess++; |
| } |
| |
| return Get<Ip6::Ip6>().HandleDatagram(aMessage, &netif, &aLinkInfo, false); |
| } |
| |
| Error MeshForwarder::GetFramePriority(const uint8_t * aFrame, |
| uint16_t aFrameLength, |
| const Mac::Address &aMacSource, |
| const Mac::Address &aMacDest, |
| Message::Priority & aPriority) |
| { |
| Error error = kErrorNone; |
| Ip6::Header ip6Header; |
| uint16_t dstPort; |
| uint8_t headerLength; |
| bool nextHeaderCompressed; |
| |
| SuccessOrExit(error = DecompressIp6Header(aFrame, aFrameLength, aMacSource, aMacDest, ip6Header, headerLength, |
| nextHeaderCompressed)); |
| aPriority = Ip6::Ip6::DscpToPriority(ip6Header.GetDscp()); |
| |
| aFrame += headerLength; |
| aFrameLength -= headerLength; |
| |
| switch (ip6Header.GetNextHeader()) |
| { |
| case Ip6::kProtoIcmp6: |
| |
| VerifyOrExit(aFrameLength >= sizeof(Ip6::Icmp::Header), error = kErrorParse); |
| |
| // Only ICMPv6 error messages are prioritized. |
| if (reinterpret_cast<const Ip6::Icmp::Header *>(aFrame)->IsError()) |
| { |
| aPriority = Message::kPriorityNet; |
| } |
| |
| break; |
| |
| case Ip6::kProtoUdp: |
| |
| if (nextHeaderCompressed) |
| { |
| Ip6::Udp::Header udpHeader; |
| |
| VerifyOrExit(Get<Lowpan::Lowpan>().DecompressUdpHeader(udpHeader, aFrame, aFrameLength) >= 0, |
| error = kErrorParse); |
| |
| dstPort = udpHeader.GetDestinationPort(); |
| } |
| else |
| { |
| VerifyOrExit(aFrameLength >= sizeof(Ip6::Udp::Header), error = kErrorParse); |
| dstPort = reinterpret_cast<const Ip6::Udp::Header *>(aFrame)->GetDestinationPort(); |
| } |
| |
| if ((dstPort == Mle::kUdpPort) || (dstPort == Tmf::kUdpPort)) |
| { |
| aPriority = Message::kPriorityNet; |
| } |
| |
| break; |
| |
| default: |
| break; |
| } |
| |
| exit: |
| return error; |
| } |
| |
| #if OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE |
| Error MeshForwarder::SendEmptyMessage(void) |
| { |
| Error error = kErrorNone; |
| Message *message = nullptr; |
| |
| VerifyOrExit(mEnabled && !Get<Mac::Mac>().GetRxOnWhenIdle() && |
| Get<Mle::MleRouter>().GetParent().IsStateValidOrRestoring(), |
| error = kErrorInvalidState); |
| |
| message = Get<MessagePool>().Allocate(Message::kTypeMacEmptyData); |
| VerifyOrExit(message != nullptr, error = kErrorNoBufs); |
| |
| SuccessOrExit(error = SendMessage(*message)); |
| |
| exit: |
| FreeMessageOnError(message, error); |
| LogDebg("Send empty message, error:%s", ErrorToString(error)); |
| return error; |
| } |
| #endif // OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE |
| |
| bool MeshForwarder::CalcIePresent(const Message *aMessage) |
| { |
| bool iePresent = false; |
| |
| OT_UNUSED_VARIABLE(aMessage); |
| |
| #if OPENTHREAD_CONFIG_MAC_HEADER_IE_SUPPORT |
| #if OPENTHREAD_CONFIG_TIME_SYNC_ENABLE |
| iePresent |= (aMessage != nullptr && aMessage->IsTimeSync()); |
| #endif |
| #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE |
| iePresent |= Get<Mac::Mac>().IsCslEnabled(); |
| #endif |
| #endif |
| |
| return iePresent; |
| } |
| |
| #if OPENTHREAD_CONFIG_MAC_HEADER_IE_SUPPORT |
| void MeshForwarder::AppendHeaderIe(const Message *aMessage, Mac::TxFrame &aFrame) |
| { |
| uint8_t index = 0; |
| bool iePresent = false; |
| bool payloadPresent = |
| (aFrame.GetType() == Mac::Frame::kFcfFrameMacCmd) || (aMessage != nullptr && aMessage->GetLength() != 0); |
| |
| #if OPENTHREAD_CONFIG_TIME_SYNC_ENABLE |
| if (aMessage != nullptr && aMessage->IsTimeSync()) |
| { |
| IgnoreError(aFrame.AppendHeaderIeAt<Mac::TimeIe>(index)); |
| iePresent = true; |
| } |
| #endif |
| #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE |
| if (Get<Mac::Mac>().IsCslEnabled()) |
| { |
| IgnoreError(aFrame.AppendHeaderIeAt<Mac::CslIe>(index)); |
| aFrame.mInfo.mTxInfo.mCslPresent = true; |
| iePresent = true; |
| } |
| else |
| { |
| aFrame.mInfo.mTxInfo.mCslPresent = false; |
| } |
| #endif |
| |
| if (iePresent && payloadPresent) |
| { |
| // Assume no Payload IE in current implementation |
| IgnoreError(aFrame.AppendHeaderIeAt<Mac::Termination2Ie>(index)); |
| } |
| } |
| #endif |
| |
| uint16_t MeshForwarder::CalcFrameVersion(const Neighbor *aNeighbor, bool aIePresent) |
| { |
| uint16_t version = Mac::Frame::kFcfFrameVersion2006; |
| OT_UNUSED_VARIABLE(aNeighbor); |
| |
| if (aIePresent) |
| { |
| version = Mac::Frame::kFcfFrameVersion2015; |
| } |
| #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_MAC_CSL_TRANSMITTER_ENABLE |
| else if (aNeighbor != nullptr && !Mle::MleRouter::IsActiveRouter(aNeighbor->GetRloc16()) && |
| static_cast<const Child *>(aNeighbor)->IsCslSynchronized()) |
| { |
| version = Mac::Frame::kFcfFrameVersion2015; |
| } |
| #endif |
| #if OPENTHREAD_CONFIG_MLE_LINK_METRICS_INITIATOR_ENABLE |
| else if (aNeighbor != nullptr && aNeighbor->IsEnhAckProbingActive()) |
| { |
| version = Mac::Frame::kFcfFrameVersion2015; ///< Set version to 2015 to fetch Link Metrics data in Enh-ACK. |
| } |
| #endif |
| |
| return version; |
| } |
| |
| // LCOV_EXCL_START |
| |
| Error MeshForwarder::ParseIp6UdpTcpHeader(const Message &aMessage, |
| Ip6::Header & aIp6Header, |
| uint16_t & aChecksum, |
| uint16_t & aSourcePort, |
| uint16_t & aDestPort) |
| { |
| Error error = kErrorParse; |
| union |
| { |
| Ip6::Udp::Header udp; |
| Ip6::Tcp::Header tcp; |
| } header; |
| |
| aChecksum = 0; |
| aSourcePort = 0; |
| aDestPort = 0; |
| |
| SuccessOrExit(aMessage.Read(0, aIp6Header)); |
| VerifyOrExit(aIp6Header.IsVersion6()); |
| |
| switch (aIp6Header.GetNextHeader()) |
| { |
| case Ip6::kProtoUdp: |
| SuccessOrExit(aMessage.Read(sizeof(Ip6::Header), header.udp)); |
| aChecksum = header.udp.GetChecksum(); |
| aSourcePort = header.udp.GetSourcePort(); |
| aDestPort = header.udp.GetDestinationPort(); |
| break; |
| |
| case Ip6::kProtoTcp: |
| SuccessOrExit(aMessage.Read(sizeof(Ip6::Header), header.tcp)); |
| aChecksum = header.tcp.GetChecksum(); |
| aSourcePort = header.tcp.GetSourcePort(); |
| aDestPort = header.tcp.GetDestinationPort(); |
| break; |
| |
| default: |
| break; |
| } |
| |
| error = kErrorNone; |
| |
| exit: |
| return error; |
| } |
| |
| #if OT_SHOULD_LOG_AT(OT_LOG_LEVEL_NOTE) |
| |
| const char *MeshForwarder::MessageActionToString(MessageAction aAction, Error aError) |
| { |
| static const char *const kMessageActionStrings[] = { |
| "Received", // (0) kMessageReceive |
| "Sent", // (1) kMessageTransmit |
| "Prepping indir tx", // (2) kMessagePrepareIndirect |
| "Dropping", // (3) kMessageDrop |
| "Dropping (reassembly queue)", // (4) kMessageReassemblyDrop |
| "Evicting", // (5) kMessageEvict |
| }; |
| |
| const char *string = kMessageActionStrings[aAction]; |
| |
| static_assert(kMessageReceive == 0, "kMessageReceive value is incorrect"); |
| static_assert(kMessageTransmit == 1, "kMessageTransmit value is incorrect"); |
| static_assert(kMessagePrepareIndirect == 2, "kMessagePrepareIndirect value is incorrect"); |
| static_assert(kMessageDrop == 3, "kMessageDrop value is incorrect"); |
| static_assert(kMessageReassemblyDrop == 4, "kMessageReassemblyDrop value is incorrect"); |
| static_assert(kMessageEvict == 5, "kMessageEvict value is incorrect"); |
| |
| if ((aAction == kMessageTransmit) && (aError != kErrorNone)) |
| { |
| string = "Failed to send"; |
| } |
| |
| return string; |
| } |
| |
| const char *MeshForwarder::MessagePriorityToString(const Message &aMessage) |
| { |
| return Message::PriorityToString(aMessage.GetPriority()); |
| } |
| |
| #if OPENTHREAD_CONFIG_LOG_SRC_DST_IP_ADDRESSES |
| void MeshForwarder::LogIp6SourceDestAddresses(Ip6::Header &aIp6Header, |
| uint16_t aSourcePort, |
| uint16_t aDestPort, |
| LogLevel aLogLevel) |
| { |
| if (aSourcePort != 0) |
| { |
| LogAt(aLogLevel, " src:[%s]:%d", aIp6Header.GetSource().ToString().AsCString(), aSourcePort); |
| } |
| else |
| { |
| LogAt(aLogLevel, " src:[%s]", aIp6Header.GetSource().ToString().AsCString()); |
| } |
| |
| if (aDestPort != 0) |
| { |
| LogAt(aLogLevel, " dst:[%s]:%d", aIp6Header.GetDestination().ToString().AsCString(), aDestPort); |
| } |
| else |
| { |
| LogAt(aLogLevel, " dst:[%s]", aIp6Header.GetDestination().ToString().AsCString()); |
| } |
| } |
| #else |
| void MeshForwarder::LogIp6SourceDestAddresses(Ip6::Header &, uint16_t, uint16_t, LogLevel) |
| { |
| } |
| #endif |
| |
| void MeshForwarder::LogIp6Message(MessageAction aAction, |
| const Message & aMessage, |
| const Mac::Address *aMacAddress, |
| Error aError, |
| LogLevel aLogLevel) |
| { |
| Ip6::Header ip6Header; |
| uint16_t checksum; |
| uint16_t sourcePort; |
| uint16_t destPort; |
| bool shouldLogRss; |
| bool shouldLogRadio = false; |
| const char *radioString = ""; |
| |
| SuccessOrExit(ParseIp6UdpTcpHeader(aMessage, ip6Header, checksum, sourcePort, destPort)); |
| |
| shouldLogRss = (aAction == kMessageReceive) || (aAction == kMessageReassemblyDrop); |
| |
| #if OPENTHREAD_CONFIG_MULTI_RADIO |
| shouldLogRadio = true; |
| radioString = aMessage.IsRadioTypeSet() ? RadioTypeToString(aMessage.GetRadioType()) : "all"; |
| #endif |
| |
| LogAt(aLogLevel, "%s IPv6 %s msg, len:%d, chksum:%04x, ecn:%s%s%s, sec:%s%s%s, prio:%s%s%s%s%s", |
| MessageActionToString(aAction, aError), Ip6::Ip6::IpProtoToString(ip6Header.GetNextHeader()), |
| aMessage.GetLength(), checksum, Ip6::Ip6::EcnToString(ip6Header.GetEcn()), |
| (aMacAddress == nullptr) ? "" : ((aAction == kMessageReceive) ? ", from:" : ", to:"), |
| (aMacAddress == nullptr) ? "" : aMacAddress->ToString().AsCString(), |
| ToYesNo(aMessage.IsLinkSecurityEnabled()), |
| (aError == kErrorNone) ? "" : ", error:", (aError == kErrorNone) ? "" : ErrorToString(aError), |
| MessagePriorityToString(aMessage), shouldLogRss ? ", rss:" : "", |
| shouldLogRss ? aMessage.GetRssAverager().ToString().AsCString() : "", shouldLogRadio ? ", radio:" : "", |
| radioString); |
| |
| if (aAction != kMessagePrepareIndirect) |
| { |
| LogIp6SourceDestAddresses(ip6Header, sourcePort, destPort, aLogLevel); |
| } |
| |
| exit: |
| return; |
| } |
| |
| void MeshForwarder::LogMessage(MessageAction aAction, |
| const Message & aMessage, |
| Error aError, |
| const Mac::Address *aMacAddress) |
| |
| { |
| LogLevel logLevel = kLogLevelInfo; |
| |
| switch (aAction) |
| { |
| case kMessageReceive: |
| case kMessageTransmit: |
| case kMessagePrepareIndirect: |
| logLevel = (aError == kErrorNone) ? kLogLevelInfo : kLogLevelNote; |
| break; |
| |
| case kMessageDrop: |
| case kMessageReassemblyDrop: |
| case kMessageEvict: |
| logLevel = kLogLevelNote; |
| break; |
| } |
| |
| VerifyOrExit(Instance::GetLogLevel() >= logLevel); |
| |
| switch (aMessage.GetType()) |
| { |
| case Message::kTypeIp6: |
| LogIp6Message(aAction, aMessage, aMacAddress, aError, logLevel); |
| break; |
| |
| #if OPENTHREAD_FTD |
| case Message::kType6lowpan: |
| LogMeshMessage(aAction, aMessage, aMacAddress, aError, logLevel); |
| break; |
| #endif |
| |
| default: |
| break; |
| } |
| |
| exit: |
| return; |
| } |
| |
| void MeshForwarder::LogFrame(const char *aActionText, const Mac::Frame &aFrame, Error aError) |
| { |
| if (aError != kErrorNone) |
| { |
| LogNote("%s, aError:%s, %s", aActionText, ErrorToString(aError), aFrame.ToInfoString().AsCString()); |
| } |
| else |
| { |
| LogInfo("%s, %s", aActionText, aFrame.ToInfoString().AsCString()); |
| } |
| } |
| |
| void MeshForwarder::LogFragmentFrameDrop(Error aError, |
| uint16_t aFrameLength, |
| const Mac::Address & aMacSource, |
| const Mac::Address & aMacDest, |
| const Lowpan::FragmentHeader &aFragmentHeader, |
| bool aIsSecure) |
| { |
| LogNote("Dropping rx frag frame, error:%s, len:%d, src:%s, dst:%s, tag:%d, offset:%d, dglen:%d, sec:%s", |
| ErrorToString(aError), aFrameLength, aMacSource.ToString().AsCString(), aMacDest.ToString().AsCString(), |
| aFragmentHeader.GetDatagramTag(), aFragmentHeader.GetDatagramOffset(), aFragmentHeader.GetDatagramSize(), |
| ToYesNo(aIsSecure)); |
| } |
| |
| void MeshForwarder::LogLowpanHcFrameDrop(Error aError, |
| uint16_t aFrameLength, |
| const Mac::Address &aMacSource, |
| const Mac::Address &aMacDest, |
| bool aIsSecure) |
| { |
| LogNote("Dropping rx lowpan HC frame, error:%s, len:%d, src:%s, dst:%s, sec:%s", ErrorToString(aError), |
| aFrameLength, aMacSource.ToString().AsCString(), aMacDest.ToString().AsCString(), ToYesNo(aIsSecure)); |
| } |
| |
| #else // #if OT_SHOULD_LOG_AT( OT_LOG_LEVEL_NOTE) |
| |
| void MeshForwarder::LogMessage(MessageAction, const Message &, Error, const Mac::Address *) |
| { |
| } |
| |
| void MeshForwarder::LogFrame(const char *, const Mac::Frame &, Error) |
| { |
| } |
| |
| void MeshForwarder::LogFragmentFrameDrop(Error, |
| uint16_t, |
| const Mac::Address &, |
| const Mac::Address &, |
| const Lowpan::FragmentHeader &, |
| bool) |
| { |
| } |
| |
| void MeshForwarder::LogLowpanHcFrameDrop(Error, uint16_t, const Mac::Address &, const Mac::Address &, bool) |
| { |
| } |
| |
| #endif // #if OT_SHOULD_LOG_AT( OT_LOG_LEVEL_NOTE) |
| |
| // LCOV_EXCL_STOP |
| |
| } // namespace ot |
