9.0-BETA1: PV network still won't work with NetBSD dom0

[Ben C.]

Hello,

Yes indeed.  I've verified on 8.2 and BETA1.  Seemingly exact same
issue.  Running a NetBSD(-CURRENT) dom0.  Happy to see progress but
it's not quite there yet I guess.

I've tried changing the model= line around and some other random,
brute-force like tweaks but nothing seems to work.  I can ping
internal and external hosts, but just can't seem to carry on a regular
TCP/IP conversation.

I also found this :
http://www.mail-archive.com/freebsd-xen@freebsd.org/msg00516.html

Where someone running a Debian Lenny dom0 was experiencing almost the
exact same issues I have.

FreeBSD (or, any OS) has pretty poor performance running under full
HVM .. PV drivers only work for i386 and I wouldn't be surprised if I
experienced the same issues.  (No time to test really..)

Does anyone else have any input on this?

Thanks, Ben C.

On Thu, Aug 4, 2011 at 1:31 PM, Hugo Silva <hugo at barafranca.com> wrote:
> I'm giving 9.0 a spin here. So far so good! With the exception of this
> one thing;
>
> With a NetBSD dom0, the FreeBSD HVM+PV domU (7.x, 8.x, 9.0-BETA1)
> behaves strangely in the network; trying to ssh to it from my laptop yeilds:
>
> Bad packet length 3737169374.
> Disconnecting: Packet corrupt
>
> Disabling TSO, RXCSUM and TXCSUM on xn0 results in:
>
> )$ ssh %domU_ip
> load: 0.53  cmd: ssh 3101 [select] 0.48r 0.01u 0.01s 0% 4248k
> load: 0.53  cmd: ssh 3101 [select] 0.66r 0.01u 0.01s 0% 4248k
> load: 0.53  cmd: ssh 3101 [select] 0.83r 0.01u 0.01s 0% 4248k
>
> And on the console of the domU:
>
> xn_txeof: WARNING: response is -1!
>
>
> NetBSD (5.x, -current), Linux and OpenIndiana PV domUs work as expected.
>
> What could be the cause?
>
>
> Keep up the good work on the OS!
>
> Best regards,
>
> Hugo
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