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[mesh_forwarder] stay committed to send scheduled Indirect Transmission (#2094)

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This commit is contained in:
Shu Chen
2017-08-12 13:06:35 -07:00
committed by Jonathan Hui
parent d6cc89685b
commit b0394afa93
1 changed files with 11 additions and 7 deletions
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src/core/thread/mesh_forwarder.cpp
+11 -7
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@@ -382,14 +382,9 @@ void MeshForwarder::ScheduleTransmissionTask(void)
child.GetMacAddress(mMacDest);
}
// To ensure fairness in handling of data requests from sleepy
// children, once a message is scheduled and prepared for indirect
// transmission to a child, the `mStartChildIndex` is updated to
// the next index after the current child. Subsequent call to
// `ScheduleTransmissionTask()` will begin the iteration through
// the children list from this index.
// Record current child index, and move it to next index after this indirect transmission has completed.
mStartChildIndex = nextIndex;
mStartChildIndex = childIndex;
netif.GetMac().SendFrameRequest(mMacSender);
ExitNow();
@@ -1565,6 +1560,15 @@ void MeshForwarder::HandleSentFrame(Mac::Frame &aFrame, otError aError)
if (mSendMessage == child->GetIndirectMessage())
{
// To ensure fairness in handling of data requests from sleepy
// children, once a message is completed for indirect transmission to a
// child (no matter succeed or failed), the `mStartChildIndex` is updated to
// the next index after the current child. Subsequent call to
// `ScheduleTransmissionTask()` will begin the iteration through
// the children list from this index.
mStartChildIndex++;
if (aError == OT_ERROR_NONE)
{
child->ResetIndirectTxAttempts();