R: Link can't get estabilished over RB911AC boards

Alessandro Bolletta alessandro at mediaspot.net
Mon Sep 21 15:18:03 PDT 2015


Ben, could you tell me how to compile CT kernel, for example the 4.2 version, as part of OpenWRT buildroot?

Also, what do you suggest for stability reasons? CT 4.0 or 4.2?


-----Messaggio originale-----
Da: Ben Greear [mailto:greearb at candelatech.com] 
Inviato: lunedì 21 settembre 2015 22.37
A: Alessandro Bolletta <alessandro at mediaspot.net>; ath10k at lists.infradead.org
Oggetto: Re: Link can't get estabilished over RB911AC boards

On 09/21/2015 12:57 PM, Alessandro Bolletta wrote:
> Hi,
> I have two Mikrotik RB911AC boards (radio based on QCA9882) in which I injected OpenWRT 15.05 and ath10k.
> I managed to get them connected in AP/STA configuration in a very short (2 meters) distance, but when I try to connect them on 5 kilometers, even if I set the distance parameter on OpenWRT's UCI config files properly, it tries to connect but after 3 retries, it declares unauthenticated.
> No problem with the same firmware on ath9k, for example.
> Signal is stable at -62 dbm, I also tried to change channels and push tx power, but nothing helped to do the trick.
> Also tried with every firmware combination (10.2.4, CT firmware, 999.999.0.636, 10.1.467.2-1), without success.
> Is there anybody who can tell me why? Could it be due to the kernel version (i'm running on 3.18.21)?

You probably need to adjust ack timings.  I have some un-tested firmware support for this in the CT firmware, but I haven't fully wired it up to the driver.

Someone with a bit of time and skill could add this to the ath10k driver if they wanted to.  This commit has some details.



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

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