Hi Ivo, In addition to what Jouni already mentioned about replay detection, I have a question. > If I understand correctly mac80211 is inserting the values just after > the ieee80211 header in the frame. Well, yes, that's where they belong on air. > Now there are 2 ways rt2x00 can > handle this. > 1) copy the frame to the DMA in 2 steps, skipping the inserted IV by mac80211 > and copy the IV into the descriptor. How much overhead do you reckon this would be? > 2) Add flag to mac80211 to provide the IV and EIV seperately to the driver > so there won't be overhead by mac80211 to insert the IV after the ieee80211 > header when the driver doesn't want it to. I'd prefer 1) over 2) just because it seems a rather special case for this particular hardware. johannes
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