Protected flag is clear in Monitor Mode

Michal Kazior michal.kazior at tieto.com
Mon May 19 02:25:21 PDT 2014


On 16 May 2014 06:38, Yeoh Chun-Yeow <yeohchunyeow at gmail.com> wrote:
> Hi, all
>
> I try to use ath10k (firmware version 10.1.467.2-1_ as standalone
> monitor mode. I assume that monitor mode will allows the frame to pass
> to upper layer without any modification.
>
> But it seems that the protected flag in frame control is clear while I
> capture with wireshark. I has verified that the ath9k has not such
> issue and the protected flag is set.
>
> So is this a known issue in monitor mode for ath10k?

Good catch!

ath10k doesn't really check if frame was decrypted by firmware or not
(there's no explicit descriptor flag for that).

I think we need to rely on the raw frame decap mode as an implicit
indication a frame must not have it's protected flag stripped.


Michał



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