Am Freitag 02 Juli 2010 schrieb Johannes Berg: > On Fri, 2010-07-02 at 19:59 +0200, Helmut Schaa wrote: > > > > unless your > > > device itself is capable of generating the TIM IE _right before_ the > > > beacon gets transmitted. > > > > Agreed. At least on rt2800 we can use the pre tbtt interrupt to update the > > beacon just before it is sent out. > > Careful though. You don't know how far in advance it is triggered (or > maybe you do) or if the time will be sufficient to generate and upload > the beacon to the device. You could even hit lock contention I think. Yeah, the delay is configurable. And yes, we cannot be 100% sure but I already did some tests and on my MIPS board anything >1ms was enough to generate + upload a new beacon to the device. And we can still increase that to a safe default of maybe 5ms or so. Helmut -- 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
