On 11/18/2010 02:41 AM, Bruno Randolf wrote:
quoted text
> Does it work without any encryption?

Yes, both with and without nohwcrypt set.

quoted text
> I'm very surprised you see problems even with WEP - so could you please check
> if the interface works correctly without any encryption?
>
> And can you describe the symptoms more accurately? You said you can connect,
> but no DHCP and traffic stalls after a while on stronger traffic. Can you
> describe more details and give me a step-by-step instruction how to reproduce?

Did some testing with ping, and on the module with a4 MAC, receiving 
seems to work flawlessly up to full 1478 bytes frames.
Transmission is ok only up to 68 byte frames (ping -s 60).
Frames any bigger (ping -s 61 ... ping -s 1470) only get through 1% of 
the time (99% packet loss).

On the a5 MAC things are worse. In the above case arp worked, but here 
arps get through only around ~1% of the time, which makes further 
testing hard, but still, something gets through.

The DHCP issue at least starts figuring out considering a packet size 
limitation.

I'm not so sure if it's really traffic related, I just noticed that in 
the corner cases, using flood ping would not get anything through.

So it's very simple to reproduce: Linux client with ath5k pings (or 
arpings) a Linux server connected to the AP in 802.11a mode.

Tried with Linksys WAP610N and WRT610N.
I also have a report with a Trapeze AP, probably MP-620B.

-- 
Stefan Nickl
System Engineer
Kontron Modular Computers GmbH

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