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[mesh-forwarder] rename UpdateEidRlocCacheAndStaleChild() (#11393)

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This method inspects a received message to perform two key actions:
- Updating the EID-to-RLOC cache (for snoop optimization) and
- Detecting whether a former child device has moved to a new parent.

The renaming clarifies the specific responsibilities of this method.
This commit is contained in:
Abtin Keshavarzian
2025-04-03 08:33:16 -07:00
committed by GitHub
parent e4339c5939
commit 13168c3a91
3 changed files with 8 additions and 5 deletions
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4
src/core/thread/mesh_forwarder.cpp
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@ -1472,7 +1472,7 @@ void MeshForwarder::HandleFragment(RxInfo &aRxInfo)
uint16_t datagramSize = fragmentHeader.GetDatagramSize();
#if OPENTHREAD_FTD
UpdateRoutes(aRxInfo);
UpdateEidRlocCacheAndStaleChild(aRxInfo);
#endif
SuccessOrExit(error = FrameToMessage(aRxInfo, datagramSize, message));
@ -1635,7 +1635,7 @@ void MeshForwarder::HandleLowpanHc(RxInfo &aRxInfo)
Message *message = nullptr;
#if OPENTHREAD_FTD
UpdateRoutes(aRxInfo);
UpdateEidRlocCacheAndStaleChild(aRxInfo);
#endif
SuccessOrExit(error = FrameToMessage(aRxInfo, 0, message));

2
src/core/thread/mesh_forwarder.hpp
View File

@ -489,7 +489,7 @@ private:
void SendIcmpErrorIfDstUnreach(const Message &aMessage, const Mac::Addresses &aMacAddrs);
Error CheckReachability(RxInfo &aRxInfo);
Error CheckReachability(uint16_t aMeshDest, const Ip6::Header &aIp6Header);
void UpdateRoutes(RxInfo &aRxInfo);
void UpdateEidRlocCacheAndStaleChild(RxInfo &aRxInfo);
Error FrameToMessage(RxInfo &aRxInfo, uint16_t aDatagramSize, Message *&aMessage);
void GetMacSourceAddress(const Ip6::Address &aIp6Addr, Mac::Address &aMacAddr);
Message *PrepareNextDirectTransmission(void);

7
src/core/thread/mesh_forwarder_ftd.cpp
View File

@ -586,7 +586,7 @@ void MeshForwarder::HandleMesh(RxInfo &aRxInfo)
aRxInfo.mMacAddrs.mSource.SetShort(meshHeader.GetSource());
aRxInfo.mMacAddrs.mDestination.SetShort(meshHeader.GetDestination());
UpdateRoutes(aRxInfo);
UpdateEidRlocCacheAndStaleChild(aRxInfo);
if (Get<Mle::Mle>().HasRloc16(aRxInfo.GetDstAddr().GetShort()) ||
Get<ChildTable>().HasMinimalChild(aRxInfo.GetDstAddr().GetShort()))
@ -669,7 +669,7 @@ exit:
return;
}
void MeshForwarder::UpdateRoutes(RxInfo &aRxInfo)
void MeshForwarder::UpdateEidRlocCacheAndStaleChild(RxInfo &aRxInfo)
{
Neighbor *neighbor;
@ -688,6 +688,9 @@ void MeshForwarder::UpdateRoutes(RxInfo &aRxInfo)
aRxInfo.mIp6Headers.GetSourceAddress(), aRxInfo.GetSrcAddr().GetShort(), aRxInfo.GetDstAddr().GetShort());
}
// Detect if a former child has moved to a new parent by
// inspecting the received message.
neighbor = Get<NeighborTable>().FindNeighbor(aRxInfo.mIp6Headers.GetSourceAddress());
VerifyOrExit(neighbor != nullptr && !neighbor->IsFullThreadDevice());