On Thu, Nov 16, 2006 at 06:38:20PM +0100, Johannes Berg wrote: > Oh, good point. Will need to think about this more. But right now, if > that MMIC flag is set (i.e. hw does MMIC), we still do MMIC for > fragmented frames. And there's actually a bug here I think: if hw does > MMIC, how can the driver tell not to do it on those frames it's getting > as fragments?
It's been awhile since I working on this part, but if I remember correctly, this can be done easily by the driver behaving different based on the frame being fragmented or not (it is fragmented if MoreFrag flag is set or seq# != 0). That's the way it was done with hardware designs that allow full TKIP hwaccel for MSDUs that are not fragmented, but require software implementation of Michael MIC if MSDU is fragmented. -- Jouni Malinen PGP id EFC895FA - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
