linux-kernel - RE: [PATCH rtw-next v4 05/10] wifi: rtw89: implement C2H TX report handler

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Message-ID: <ae325e6c63604498b3bd2836f9662d23@realtek.com>
Date: Mon, 3 Nov 2025 02:13:55 +0000
From: Ping-Ke Shih <pkshih@...ltek.com>
To: Fedor Pchelkin <pchelkin@...ras.ru>,
        Bitterblue Smith
	<rtl8821cerfe2@...il.com>
CC: Zong-Zhe Yang <kevin_yang@...ltek.com>,
        Bernie Huang
	<phhuang@...ltek.com>,
        "linux-wireless@...r.kernel.org"
	<linux-wireless@...r.kernel.org>,
        "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>,
        "lvc-project@...uxtesting.org"
	<lvc-project@...uxtesting.org>
Subject: RE: [PATCH rtw-next v4 05/10] wifi: rtw89: implement C2H TX report handler

Fedor Pchelkin <pchelkin@...ras.ru> wrote:
> rtw89 has several ways of handling TX status report events.  The first one
> is based on RPP feature which is used by PCIe HCI.  The other one depends
> on firmware sending a corresponding C2H message, quite similar to what
> rtw88 has.
> 
> Toggle a bit in the TX descriptor to indicate to the firmware that TX
> report for the frame is expected.   This will allow handling TX wait skbs
> and the ones flagged with IEEE80211_TX_CTL_REQ_TX_STATUS correctly.
> 
> Do the bulk of the patch according to the vendor driver for RTL8851BU.
> However, there are slight differences in C2H message format between
> different types of chips.  RTL885xB ones follow format V0.  RTL8852C has
> format V1, and RTL8922AU has format V2.
> 
> Found by Linux Verification Center (linuxtesting.org).
> 
> Suggested-by: Bitterblue Smith <rtl8821cerfe2@...il.com>
> Signed-off-by: Fedor Pchelkin <pchelkin@...ras.ru>

Acked-by: Ping-Ke Shih <pkshih@...ltek.com>