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[nexus] set RSSI in simulated ACK frames (#12929)

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Set the RSSI field in simulated MAC ACK frames in nexus_core.cpp.

Previously, the simulator did not populate the mRssi field in the
mInfo.mRxInfo structure of simulated ACK frames passed to
otPlatRadioTxDone. This caused OpenThread to ignore the RSSI of ACKs,
preventing the parentRss average from updating on successful data polls
from Sleepy End Devices (SEDs).

Now, the RSSI from the parent to the child is calculated using the radio
model and clamped to int8_t before being assigned to the ACK frame.
This commit is contained in:
Jonathan Hui
2026-04-19 16:43:34 -05:00
committed by GitHub
parent fba018f36e
commit d8da3c3ae9
1 changed files with 18 additions and 2 deletions
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tests/nexus/platform/nexus_core.cpp
+18 -2
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@@ -889,9 +889,25 @@ void Core::ProcessRadio(Node &aNode)
}
ackFrame.UpdateFcs();
mPcap.WriteFrame(ackFrame, mNow);
otPlatRadioTxDone(&aNode.GetInstance(), &aNode.mRadio.mTxFrame, &ackFrame, kErrorNone);
{
int16_t ackRssi = RadioModel::CalculateRssi(*ackNode, aNode);
ackFrame.mInfo.mRxInfo.mRssi = ClampToInt8(ackRssi);
ackFrame.mInfo.mRxInfo.mLqi = kDefaultRxLqi;
ackFrame.mInfo.mRxInfo.mTimestamp = mNow;
mPcap.WriteFrame(ackFrame, mNow);
if (RadioModel::ShouldDropPacket(ackRssi))
{
otPlatRadioTxDone(&aNode.GetInstance(), &aNode.mRadio.mTxFrame, nullptr, kErrorNoAck);
}
else
{
otPlatRadioTxDone(&aNode.GetInstance(), &aNode.mRadio.mTxFrame, &ackFrame, kErrorNone);
}
}
}
else
{