Re: Can we increase IEEE80211_MAX_QUEUES

[Ben Greear <greearb@candelatech.com>]

On 12/03/2015 12:21 PM, Johannes Berg wrote:
> On Thu, 2015-12-03 at 12:16 -0800, Ben Greear wrote:
>> ath10k wants to use vdev-id as a queue-id, and I want to support up
>> to
>> 64 vdevs.  In the 4.2 kernel, this is causing splats when using lots
>> of
>> vdevs because then queue is out of range.
>>
>> Can we just increase IEEE80211_MAX_QUEUES to 64?
>>
>
> I think not, that would likely cause a lot of data structures to grow
> too much. We'd have to do more dynamic things in that case, I suppose.
>
> Does the original premise even make sense though? A single queue for
> each vdev seems a bit strange.

I think it is all fakery in the driver, but I'm not sure how easy it
would be to fix.

I'm not certain why I'm suddenly seeing this, but I just started using 4.2 kernel
again and maybe that is the difference.  I also tweaked firmware recently...

I'll make a stab at allowing 64 queues, and also try to figure out why
I started seeing the problem.

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com