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[mesh-forwarder] handle route lookup errors in UpdateIp6RouteFtd() (#11335)

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This commit modifies `UpdateIp6RouteFtd()` to handle errors returned
by `NetworkData::Leader::RouteLookup()`, ensuring that messages are
dropped appropriately when a route lookup fails. It also initializes
`mMeshDest` to an invalid RLOC16 at the beginning of the method.
This commit is contained in:
Abtin Keshavarzian
2025-03-12 10:59:00 -07:00
committed by GitHub
parent 9e7b57d7fb
commit d30b1ae6fb
1 changed files with 5 additions and 2 deletions
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src/core/thread/mesh_forwarder_ftd.cpp
+5 -2
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@@ -393,6 +393,8 @@ Error MeshForwarder::UpdateIp6RouteFtd(const Ip6::Header &aIp6Header, Message &a
Error error = kErrorNone;
Neighbor *neighbor;
mMeshDest = Mle::kInvalidRloc16;
if (aMessage.GetOffset() > 0)
{
mMeshDest = aMessage.GetMeshDest();
@@ -400,6 +402,7 @@ Error MeshForwarder::UpdateIp6RouteFtd(const Ip6::Header &aIp6Header, Message &a
else if (mle.IsRoutingLocator(aIp6Header.GetDestination()))
{
uint16_t rloc16 = aIp6Header.GetDestination().GetIid().GetLocator();
VerifyOrExit(Mle::IsRouterIdValid(Mle::RouterIdFromRloc16(rloc16)), error = kErrorDrop);
mMeshDest = rloc16;
}
@@ -436,8 +439,8 @@ Error MeshForwarder::UpdateIp6RouteFtd(const Ip6::Header &aIp6Header, Message &a
}
else
{
IgnoreError(
Get<NetworkData::Leader>().RouteLookup(aIp6Header.GetSource(), aIp6Header.GetDestination(), mMeshDest));
SuccessOrExit(error = Get<NetworkData::Leader>().RouteLookup(aIp6Header.GetSource(),
aIp6Header.GetDestination(), mMeshDest));
}
VerifyOrExit(mMeshDest != Mle::kInvalidRloc16, error = kErrorDrop);