unwanted client isolation AR9280 @ 5GHz mode

[Gertjan Hofman]

Oleksij,

I am using this card: 
https://www.thinkpenguin.com/gnu-linux/penguin-wireless-n-dual-band-usb-adapter-gnu-linux-tpe-nusbdb

(which is Atheros AR9280 Rev:2). It appears to be made by panasonic.

No, I wasnt able to compile the firmware on either Ubuntu 10.04 or 13.10 but that might have been due to missing dependencies.  If you have any idea what packages might be missing or just give me a dpkg --list from your system I can probably work it out. I can also send you the compilation errors.

Not sure what you mean with: 'And use UART port on this adapter'. Is there some kind of serial debug port on these chips ?

As I said, I am happy to send you one.

Cheers

Gertjan







On Saturday, December 7, 2013 9:15:35 AM, Oleksij Rempel <linux at rempel-privat.de> wrote:
Am 06.12.2013 17:00, schrieb Gertjan Hofman:
> Oleksij,
> 
> I figured I should update the information in this chain.  My title should have probably better been, 'No broadcasts on Atheros AR9280'. 
> 
> Two things. I put some debugging statements in /kernel/linux-3.11.0/net/mac80211/rx.c. When pinging between two clients, I can see the ARP broadcast being copied back into the buffer:
>      xmit_skb = skb_copy(skb, GFP_ATOMIC);
> never to appear anywhere after that.
> 
> That was with the: Atheros AR9280 Rev:2 usb 1-1: ath9k_htc: Firmware htc_7010.fw.
> 
> The second thing is that  I got a new card, a mini-pcie Atheros AR9300 Rev:3,  half-mini-PCIe (sold as WPEA-128N).  As far as I can tell it uses the same drivers but comes up at 5 GHz fine, no broadcast issues. 
> 
> This seems to point back at the firmware.  One more frustration is that I am sure I once got broadcast - which I am unable to replicate again. Secondly, a number of times the 9280 comes up  without even client-to-master ARP being answered.
> 
> 
> I may well have a working system now, but I am interested in solving this issue.
> If you have any time to  look into this, I can send you a AR9280 USB wireless card.

Right now it has lower priority, but i'm interested in solving this
issue. What kind usb card do you have?
Do you able to compile ath9k-htc firmware? And use UART port on this
adapter?


> In both cases of course, we had to patch the ath driver (regd.c) to ignore the region code issue.
> 
> Cheers
> 
> Gertjan

-- 
Regards,
Oleksij