On 2016-03-08 13:49, Johannes Stezenbach wrote: > On Mon, Mar 07, 2016 at 10:22:38PM +0100, Felix Fietkau wrote: >> On 2016-03-07 13:41, Johannes Stezenbach wrote: >> > http://www.mediatek.com/en/downloads1/downloads/mt7612u/ >> I checked, they simply use a software timer for it and stuff buffered >> multicast packets into the BE queue. I don't think the hardware offers >> any better way of doing this... > > I had to refresh my memory on this driver. The thing that tripped > me when I first read through it was that is using a jiffies based > timer and additionally sets it to fire 10ms after the calculated > beacon time. So it's always too late, isn't it? > > But of course it is irrelevant for us since we can use a hrtimer. > However, if other frames are queued in the hw they are still sent > before the buffered frames. Since the hw has a dedicated queue > for HCCA I wonder if it could be used here? > (My knowledged of the standard is also rusty, ISTR the buffered > traffic must be sent before other traffic before the stations > go back to sleep.) On mt76x2e, I simply use the management queue for buffered frames, since it has a very high priority, and management frames are typically delivered via the voice WMM queue anyway. I think the MAC is probably similar enough that the same approach is possible on mt76x2u as well. - Felix -- 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
