From 9cd65f78a35533472cacec86d0e46dbb8c7af92d Mon Sep 17 00:00:00 2001
From: Abtin Keshavarzian <abtink@google.com>
Date: Tue, 19 Nov 2024 08:27:21 -0800
Subject: [PATCH] [mac-frame] set `mCslPresent` on `TxFrame` when CSL IE is
 added (#10939)

This commit ensures that the `mCslPresent` flag is set on `TxFrame`
when the CSL IE header is appended to the frame. This addresses an
issue introduced in #10692 where this flag can remain unset.
---
 src/core/mac/mac_frame.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/core/mac/mac_frame.cpp b/src/core/mac/mac_frame.cpp
index 5630e7cef..5e4688691 100644
--- a/src/core/mac/mac_frame.cpp
+++ b/src/core/mac/mac_frame.cpp
@@ -232,6 +232,7 @@ void TxFrame::Info::PrepareHeadersIn(TxFrame &aTxFrame) const
     {
         builder.Append<HeaderIe>()->Init(CslIe::kHeaderIeId, sizeof(CslIe));
         builder.Append<CslIe>();
+        aTxFrame.SetCslIePresent(true);
     }
 #endif