On Wed, Apr 21, 2010 at 07:07:14PM +0300, Pasi Kärkkäinen wrote:
> On Wed, Apr 21, 2010 at 11:41:35AM -0400, Gerry Reno wrote:
> > Pasi Kärkkäinen wrote:
> >> On Sat, Apr 10, 2010 at 02:19:39PM +0300, Pasi Kärkkäinen wrote:
> >>
> >>> On Fri, Apr 09, 2010 at 06:40:04PM -0700, Brandon Lamb wrote:
> >>>
> >>>> Hello,
> >>>>
> >>>> Just did a fresh install of xen-4.0 and using the 2.6.31.13 dom0 kernel.
> >>>>
> >>>> I have 6 linux debian guests running, and on my host console i am
> >>>> getting these errors rolling pretty constantly.
> >>>>
> >>>> "Attempting to checksum a non-TCP/UDP packet, dropping a protocol 1
> >>>> packet"
> >>>>
> >>>> I tried doing the ethtool -K eth0 tx off and same thing on peth0,
> >>>> using bridged mode for network config.
> >>>>
> >>>> Any tips? Google is failing me, im not sure what to even search for
> >>>> other than "xen Attempting to checksum a non-TCP/UDP packet".
> >>>>
> >>>> Im wondering if this has something to do with why my guests were
> >>>> seeming to have network timeout/freezing problems, I thought maybe
> >>>> upgrading from 3.4 to 4.0 would magically solve it.
> >>>>
> >>>>
> >>> All the networking stuff is done on the dom0 Linux kernel,
> >>> so Xen upgrade doesn't affect that.
> >>>
> >>> Although most probably you also upgraded dom0 kernel..
> >>>
> >>> Can you please post output of:
> >>>
> >>> - ethtool peth0
> >>> - ethtool -i peth0
> >>> - brctl show
> >>> - ifconfig -a
> >>>
> >>>
> >>
> >> And also:
> >> - ethtool -k peth0
> >>
> >> -- Pasi
> >>
> >
> > Hi Pasi,
> > I saw this post and I'm experiencing this checksumming problem as well.
> > The setup is eucalyptus and whenever we try to ping an 'instance'
> > machine from outside the cloud controller we see these errors. Also
> > when we try to ping from inside the instance to the public network. We
> > are running in NOVLAN mode across a bridge.
> >
> > Here are some details: stats from the 'node controller' (which launches
> > the instances)
> >
> > root@grp-01-23-02:~# ethtool eth0
> > Settings for eth0:
> > Supported ports: [ TP MII ]
> > Supported link modes: 10baseT/Half 10baseT/Full
> > 100baseT/Half 100baseT/Full
> > 1000baseT/Half 1000baseT/Full
> > Supports auto-negotiation: Yes
> > Advertised link modes: 10baseT/Half 10baseT/Full
> > 100baseT/Half 100baseT/Full
> > 1000baseT/Half 1000baseT/Full
> > Advertised auto-negotiation: Yes
> > Speed: 1000Mb/s
> > Duplex: Full
> > Port: MII
> > PHYAD: 0
> > Transceiver: internal
> > Auto-negotiation: on
> > Supports Wake-on: pumbg
> > Wake-on: g
> > Current message level: 0x00000033 (51)
> > Link detected: yes
> > root@grp-01-23-02:~#
> > root@grp-01-23-02:~#
> > root@grp-01-23-02:~# ethtool -i eth0
> > driver: r8169
> > version: 2.3LK-NAPI
> > firmware-version:
> > bus-info: 0000:02:00.0
> >
>
> Ok, so Realtek NIC.
>
>
> > root@grp-01-23-02:~#
> > root@grp-01-23-02:~#
> > root@grp-01-23-02:~# which brctl
> > /usr/sbin/brctl
> > You have new mail in /var/mail/root
> > root@grp-01-23-02:~#
> > root@grp-01-23-02:~# brctl show
> > bridge name bridge id STP enabled interfaces
> > br0 8000.00241d1905df no eth0
> > vif3.0
> > vif4.0
> > tmpbridge 8000.000000000000 no
> > virbr0 8000.000000000000 yes
> > root@grp-01-23-02:~#
>
> <snip>
>
> > root@grp-01-23-02:~# ethtool -k eth0
> > Offload parameters for eth0:
> > Cannot get device flags: Operation not supported
> > rx-checksumming: on
> >
>
> Did you try disabling rx-checksumming?
>
> > tx-checksumming: off
> > scatter-gather: off
> > tcp-segmentation-offload: off
> > udp-fragmentation-offload: off
> > generic-segmentation-offload: off
> > generic-receive-offload: off
> > large-receive-offload: off
> >
> > We are running ubuntu enterprise cloud 1.6 with a pv_ops dom0 kernel
> > (2.6.31.6) compiled from Jeremy's git tree back about December.
> >
>
> Ok. Did you try upgrading the dom0 kernel?
>
Replying here aswell.. this was a bug in the netback driver.
It should be fixed in the latest xen/stable-2.6.32.x tree (2.6.32.13).
-- Pasi
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