linux-kernel - Re: [PATCH] wifi: rtl8xxxu: toggle P2P for supported devices

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Message-ID: <13830882.uLZWGnKmhe@tx3000mach.io>
Date: Wed, 25 Jun 2025 16:43:36 -0300
From: Martin Rodriguez Reboredo <yakoyoku@...il.com>
To: linux-wireless@...r.kernel.org, Bitterblue Smith <rtl8821cerfe2@...il.com>
Cc: Jes Sorensen <Jes.Sorensen@...il.com>, Ping-Ke Shih <pkshih@...ltek.com>,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] wifi: rtl8xxxu: toggle P2P for supported devices

On Wednesday 25 June 2025 13:01:04 Argentina Standard Time Bitterblue Smith 
wrote:
> On 25/06/2025 17:25, Martin Rodriguez Reboredo wrote:
> [...]
>> As of now only rtl8192ex devices have their P2P_CLIENT and P2P_GO wiphy
>> interface modes ensured because those are the only ones I can test on
>> my rtl8192eu card. The rest of chips have them set from what I've seen
>> in a cursory Internet search, they might or might not work.
>> 
>> Signed-off-by: Martin Rodriguez Reboredo <yakoyoku@...il.com>
> 
> So... does it work with your chip? How do we test?

You can test this feature with GNOME Network Displays, that's the only 
userspace application I can think of. KDE doesn't offer anything yet and 
there's no other software out there that uses WiFi P2P, not even for simple 
file transfers. Maybe utils could be written like what was done for Bluez and 
be part of a known package like NetworkManager or a thing by themselves.

With respect to my case I say it's listed by wpa_cli and it gets detected by 
Network Displays, but I cannot do anything further than that. Because I don't 
know how to use wpa's utility properly and while I try to share my screen or 
see another one, I get no dice there. Maybe this is due to an incompatibility 
with my Samsung mobile or that for proper P2P support more functionalities 
need to be added to rtl8xxxu, I can say that as of now.
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