Re: [Xen-users] emulated rtl8139 driver, openvswitch, and offload

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, Aug 30, 2012 at 08:10:39PM -0400, Michael A. Collins wrote:
> James,
>     I have not been able to reliably disable Large Send Offload, Checksum
> Offload and Scatter/Gather through the device manager GUI on Windows 2008
> 32bit/64bit with pv_drivers installed.  The Xen Net Device Driver will fail
> to start and them the dom0 will panic and reboot.  I am very scared to
> continue!  This happened to me twice today while I was going through and
> disabling GSO/TSO/GRO on my broadcom bnx2 interfaces to fix a serious issue
> we have with inter-Host network traffic.  Is there a way to do this that
> doesn't involve crashing the dom0 and causing the whole box to reboot?
> Also, is there a guide to updating the drivers?  I would like to install the
> latest 357 drivers, but the one time I tried uninstalling them I had a BSOD
> and had to reimage.
> 

What dom0 kernel version are you using? Also what Xen version? 

dom0 crashing when changing settings in the domU is a very serious bug! 


-- Pasi

> 
> Mike
> 
> > -----Original Message-----
> > From: xen-users-bounces@xxxxxxxxxxxxx [mailto:xen-users-
> > bounces@xxxxxxxxxxxxx] On Behalf Of James Harper
> > Sent: Saturday, June 23, 2012 5:49 AM
> > To: xen-users@xxxxxxxxxxxxxxxxxxx
> > Subject: [Xen-users] emulated rtl8139 driver, openvswitch, and offload
> > 
> > I'm getting strange network problems when deploying WDS images,
> > specifically:
> > 
> > DHCP doesn't seem to renew properly
> > 
> > Tcpdump shows a 5K packet transmitted to the DomU, then retransmitted as
> > 3 x 1500 byte packets, so presumably large packets are being passed to
> > DomU and the emulated adapter can't handle them and just drops them.
> > 
> > This happens even when all the offload on the ovs bridge is off, so I
> don't
> > know what is happening.
> > 
> > Any suggestions?
> > 
> > James
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-users
> 
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxx
> http://lists.xen.org/xen-users

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