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

Adrian Chadd adrian at
Tue May 31 08:53:56 PDT 2016


The other thing to keep in mind is the hardware assist for things like
TIM parsing, wakeup, etc will likely not work. :)


On 31 May 2016 at 03:50, Michal Kazior <michal.kazior at> wrote:
> On 31 May 2016 at 10:44, jpo <pommnitz at> 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
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