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Date:   Wed, 5 Jul 2023 11:00:36 +0200
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Subject: Re: [PATCH v4 00/18] wifi: rtl8xxxu: Add AP mode support for 8188f
Content-Language: en-US
To:     Martin Kaistra <martin.kaistra@linutronix.de>,
        linux-wireless@vger.kernel.org
Cc:     Jes Sorensen <Jes.Sorensen@gmail.com>,
        Kalle Valo <kvalo@kernel.org>,
        Ping-Ke Shih <pkshih@realtek.com>,
        Bitterblue Smith <rtl8821cerfe2@gmail.com>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>
References: <20230428150833.218605-1-martin.kaistra@linutronix.de>
From:   =?UTF-8?Q?Georg_M=c3=bcller?= <georgmueller@gmx.net>
In-Reply-To: <20230428150833.218605-1-martin.kaistra@linutronix.de>
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Precedence: bulk

Hi Martin,

Am 28.04.23 um 17:08 schrieb Martin Kaistra:
> This series intends to bring AP mode support to the rtl8xxxu driver,
> more specifically for the 8188f, because this is the HW I have.
> The work is based on the vendor driver as I do not have access to
> datasheets.

I tried to enable AP mode for a 8188EU device (TP-Link TL-WN725N) with
some mixed results.

I added .supports_ap = 1 and .max_macid_num = 16 to rtl8188eu_fops.

The AP was visible and I once was able to connect to it. When connected,
the link was stable, but I didn't do any benchmarks.

Most of my tries I was not able to establish a connection (looks like
timeouts) and once I got this message:

     usb 1-4: rtl8xxxu_send_beacon_frame: Failed to read beacon valid bit

The driver I am using currently is the out-of-tree driver rtl8188eu [1],
which has a stable AP mode, but has some stability issues in managed mode.

Please give me a hint if and how I may help tracking down the issue to
enable AP mode for 8188EU as well.

Best regards,
Georg

[1]
https://github.com/lwfinger/rtl8188eu/tree/v5.2.2.4