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[mac] don't append header termination IE2 for empty data payload (#7123)

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We do not require the HT2 IE if the only thing that follows the header
is the MIC.

This commit reverts #6941.
This commit is contained in:
Łukasz Maciejończyk
2021-10-29 10:56:55 -07:00
committed by GitHub
parent c9d68a7a01
commit 319068637c
1 changed files with 2 additions and 4 deletions
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src/core/thread/mesh_forwarder.cpp
+2 -4
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@@ -1582,10 +1582,8 @@ void MeshForwarder::AppendHeaderIe(const Message *aMessage, Mac::TxFrame &aFrame
{
uint8_t index = 0;
bool iePresent = false;
// MIC is a part of Data Payload, so if it's present, Data Payload is not empty even if the message is
// MIC is always present when the frame is secured
bool payloadPresent = (aFrame.GetType() == Mac::Frame::kFcfFrameMacCmd) ||
(aMessage != nullptr && aMessage->GetLength() != 0) || aFrame.GetSecurityEnabled();
bool payloadPresent =
(aFrame.GetType() == Mac::Frame::kFcfFrameMacCmd) || (aMessage != nullptr && aMessage->GetLength() != 0);
#if OPENTHREAD_CONFIG_TIME_SYNC_ENABLE
if (aMessage != nullptr && aMessage->IsTimeSync())