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[mlr] stop fast polls upon receiving response (#13149)

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When a sleepy end device (where `Mle::IsRxOnWhenIdle()` returns
false) sends an MLR request, it initiates fast data polls via
`DataPollSender::SendFastPolls()` to quickly receive the response.
This commit updates `Manager::HandleResponse()` to call
`DataPollSender::StopFastPolls()` when the MLR response is processed
by a sleepy end device. This ensures that the device does not
unnecessarily continue fast polling.
This commit is contained in:
Abtin Keshavarzian
2026-05-26 20:13:42 -07:00
committed by GitHub
parent 06e210fe89
commit 337d424d4f
1 changed files with 12 additions and 3 deletions
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src/core/thread/mlr_manager.cpp
+12 -3
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@@ -419,9 +419,13 @@ void Manager::SendNextRequest(void)
EnterState(kStateRegistering);
// Generally Thread 1.2 Router would send MLR.req on behalf for MA (scope >=4) subscribed by its MTD child.
// When Thread 1.2 MTD attaches to Thread 1.1 parent, 1.2 MTD should send MLR.req to PBBR itself.
// In this case, Thread 1.2 sleepy end device relies on fast data poll to fetch the response timely.
// Generally, a Thread 1.2 Router sends MLR.req on behalf of its
// MTD children for multicast addresses. However, when a Thread
// 1.2 MTD child attaches to a Thread 1.1 parent, the MTD child
// must send the MLR.req to the PBBR itself. In this scenario, a
// Thread 1.2 Sleepy End Device relies on fast data polls to
// receive the response in a timely manner.
if (!Get<Mle::Mle>().IsRxOnWhenIdle())
{
Get<DataPollSender>().SendFastPolls();
@@ -551,6 +555,11 @@ void Manager::ProcessResponse(Coap::Msg *aMsg, Error aResult)
AddressArray registeredAddresses;
OwnedPtr<Coap::Message> requestMsg;
if (!Get<Mle::Mle>().IsRxOnWhenIdle())
{
Get<DataPollSender>().StopFastPolls();
}
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Parse the response message