[Devel] atl1 (Attansic L1 Gigabit Ethernet) driver & TCP weirdness

[Solar Designer]

> On 01/30/2011 11:08 AM, Vasily Averin wrote:
> >could you please check 2.1.3 driver version?
> >ftp://ftp.hogchain.net/pub/linux/attansic/atl1/centos5.2/

For certain reasons, this is a bit time-consuming for me to test, but
I'll leave your message flagged as needing further work in case I find
time for it.

On Sun, Jan 30, 2011 at 11:18:15AM +0300, Vasily Averin wrote:
> btw. could you please try to decrease MTU to 1492?

I've already tried lowering the MTU (1400, etc.) - this did not help.

> 5. If you see this message (or lots of them) in your system log:
> 
> atl1 0000:02:00.0: hw csum wrong, pkt_flag:1600, err_flag:80

No, I am not seeing any messages like this.  No complaints from the
driver at all.

I think I need to emphasize that things work just fine from OpenVZ
containers on the same system!  No problems at all.  The problem only
shows up when transferring something from the "host system" (CT0).
So it looks OpenVZ-related, not just driver-related.

Thanks,

Alexander