On Sunday 04 February 2007 20:41, Jouni Malinen wrote: > On Sun, Feb 04, 2007 at 08:07:29PM +0100, Michael Buesch wrote: > > > If creating and uploading the keys to the device is less work than > > doing crypto in software, then it is clearly a win. > > Not necessarily.. > > > And that _is_ the case for bcm43xx (at least. I don't know about other > > devices' hwcrypto capabilities). > > Doing less on the CPU and more in hw is always a win. I'm not sure > > how you can say that you're not sure it is. ;) > > As an example, some of the earlier Prism2 designs supported WEP in > hardware/firmware. Yes, it would free up some host CPU, but the maximum > throughput dropped from ca. 6 Mbps to 4 Mbps (and much lower in some > cases).. WEP is quite fast operation, so using the host CPU to double > throughput sounds like a good trade in many cases. Yeah, ok. I was more thinking about sane hardware that's actually capable of doing hwcrypto. :) Sure, you're right. This prism2 card has to be treated as swcrypto device, as it's cleary not capable of handling the load. -- Greetings Michael. - To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
