Re: Please don't puke: Modifying Frame Version, Beacon and Probe-Response values

From: Joerg Pommnitz <pommnitz@yahoo.com>
To: Adrian Chadd <adrian@freebsd.org>,
	Michal Kazior <michal.kazior@tieto.com>
Cc: "ath10k@lists.infradead.org" <ath10k@lists.infradead.org>
Subject: Re: Please don't puke: Modifying Frame Version, Beacon and Probe-Response values
Date: Wed, 1 Jun 2016 11:34:10 +0000 (UTC)	[thread overview]
Message-ID: <855019245.2902911.1464780850322.JavaMail.yahoo@mail.yahoo.com> (raw)
In-Reply-To: <CAJ-VmokXt-V9JGL4E4jcL+u+gfvVJ-rFGP5H1bzTFkUr39mhtQ@mail.gmail.com>

Hi Adrian,
does "hardware assist...will likely not work" mean "forget it, won't work"
or "so it would have to be implemented in software instead"?

 -- Regards       Joerg

> Adrian Chadd <adrian@freebsd.org> schrieb am 17:53 Dienstag, 31.Mai 2016:
> > Hi,
> 
> The other thing to keep in mind is the hardware assist for things like
> TIM parsing, wakeup, etc will likely not work. :)
> 
> 
> 
> -a
> 
> 
> 
> On 31 May 2016 at 03:50, Michal Kazior <michal.kazior@tieto.com> wrote:
>>  On 31 May 2016 at 10:44, jpo <pommnitz@yahoo.com> wrote:
>>>  Hello all,
>>>  to implement a "Stealth feature", e.g. the WLAN network does 
> not show up in
>>>  normal Scans, we modified the Frame version, Beacon and Probe-Response
>>>  values for an old ATH5K card running on the now dormant Madwifi driver.
>>>  Question: Is the same thing even POSSIBLE with ath10k? My main concern 
> is,
>>>  that the firmware just won't handle non-standard values.
>>> 
>>>  Can somebody who understands the division of labor between mac80211, 
> ath10k,
>>>  the firmware and the hardware suppress his or her gag reflex long 
> enough to
>>>  think about this?
>> 
>>  First and foremost you'll need to use firmware with 
> "raw-mode" support
>>  - otherwise firmware just craps over frame headers. Some 10.2.4
>>  support it - you can look into the mailing list archive for some
>>  discussions.
>> 
>>  Not sure if Rx will work though as firmware-controlled Rx filters may
>>  prevent you from receiving frames with crazy frame_control values.
>>  You'll need to check this out yourself. Some firmware revisions might
>>  have RX_FILTER wmi command support but this isn't used/documented
>>  anywhere and it's questionable how much it allows you to override.
>> 
>>  Whatever you find it'd be nice if you post whatever you find out (for
>>  posterity :)
>> 
>> 
>>  Michał
>> 
>>  _______________________________________________
>>  ath10k mailing list
>>  ath10k@lists.infradead.org
>>  http://lists.infradead.org/mailman/listinfo/ath10k
>

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k