unwanted client isolation AR9280 @ 5GHz mode

[Oleksij Rempel]

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