[ath9k-devel] [NOT FOR MERGE] ath9k: work around key cache corruption

> "The patch itself has (at least) one big problem. It is using some
> mac80211
> internals in ath_key_config_iter to make sure that the uploaded keys
> were
> actually programmed in the hardware. Without this check the keys
> could end up
> in the lower slots and thus break all connections."

The?KEY_FLAG_UPLOADED_TO_HARDWARE use? Might not be so nice, but it's
probably not really a problem. If you wanted to avoid it, you could
just use the hw_key_idx in some way, e.g. the highest-order bit
indicates that you've set this value, or you just make sure that 0 is
an invalid value and set it to real index + 1 or something, then you
can check that?

johannes