On Wed, Feb 02, 2011 at 07:42:51PM +0200, Kalle Valo wrote: > So the firmware/hardware doesn't have support for tracking and waking > up for beacons? I didn't even know that such hardware exists :) Waking > up for beacons from host sounds very inefficient and unrealiable. All > the devices I have seen either do this in firmware or hardware due to > time constraints. Even at76c50x-usb, which is ancient, does all this > in firmware. IMHO this is a bit exaggerated. Given that the beacon interval is typically ~100 msecs, and typical worst cast irq latencies on Linux 2.6 are a few 100 usecs, we can sleep e.g. 90msecs and wake up in time to catch the beacon with high probability, thus saving 90% on PHY power. Not perfect, but good enough, isn't it? Johannes -- 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
