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Re: [PATCH 1/2] mac80211: enable TKIP when using encapsulation offloading

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On Fri, 2020-05-29 at 17:38 +0530, Sathishkumar Muruganandam wrote:

> > I don't think it can. It doesn't have all the necessary information to
> > call cfg80211_michael_mic_failure(), as far as I can tell.
> 
> Ath11k HW has capability of reporting TKIP MIC error when hw encap is 
> enabled as well, so TKIP encryption shall be enabled.

Maybe so. But it cannot tell wpa_supplicant about MIC errors, and so
that cannot do countermeasures, so something isn't right.

> Shall we have a ieee80211_hw_flags for the driver to advertise TKIP MIC 
> error reporting capability when hw encap is enabled ?
> TKIP bring-up will be disabled for the drivers which doesn't have the 
> capability.

That would be better, since for TKIP it's actually more tricky and
requires more work.

But mostly I was thinking that you should make it possible for ath11k to
actually report the MIC errors up to userspace. Right now I don't think
it can, because it doesn't have the netdev pointer?

johannes




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