Re: [RFT] mac80211: fix broadcast/multicast data drop on scan

Luis R. Rodriguez
2010-08-27T15:55:48Z

On Fri, Aug 27, 2010 at 8:51 AM, Johannes Berg
<johannes@sipsolutions.net> wrote:
> On Fri, 2010-08-27 at 08:48 -0700, Luis R. Rodriguez wrote:
>
>> > Well, there's no way we can reliably wake up exactly before a beacon by
>> > implementing that in software, hard real-time hasn't been achieved in
>> > Linux yet :-)
>>
>> Keyword here is *exactly*. I don't want to wake up *exactly* at DTIM,
>> only ensure we don't sleep during it and the send buffered frames and
>> multicast traffic data. Why can we not implement this on mac80211?
>
> Well, how long before the beacon do you want to wake up to catch it?
> 1ms? 10ms? 100ms? 1000ms? What if the system is busy?

I cannot say what would work best, how about half a beacon interval early?

Luis