Question on beacon-miss handling.

Adrian Chadd adrian at freebsd.org
Sat Jul 5 21:39:04 PDT 2014


On 5 July 2014 20:39, Ben Greear <greearb at candelatech.com> wrote:
> On 07/05/2014 07:14 PM, Adrian Chadd wrote:
>>
>> Where is it in the firmware again?
>
>
> wlan_swbmiss_offload.c
>
>
>> The beacon miss stuff is a little .. odd. Mostly because there's only
>> one (and maybe two) timers for it and they're a pain in the ass to
>> configure correctly. Having it scale (correctly) to more than two
>> vdevs may be a little challenging.
>
>
> I've seen other funny stuff where an AP will crash hard(-ish?) and the
> associated stations
> take a long time to figure out their AP is dead.  Could be related to this
> maybe..or maybe was something else.  I have not investigated closely.
>
> I'd be happy to have all the beacon miss stuff move to the driver..seems
> a waste of limited resources in the firmware.

Think about it in terms of "minimising how much the host is woken up."

That's what the target market of the STA firmware for this chip is
thinking about.


-a



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