[Xen-bugs] [Bug 1655] New: Checksum error: networking still does not work without ethtool

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1655

           Summary: Checksum error: networking still does not work without
                    ethtool
           Product: Xen
           Version: unstable
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Linux-pv_ops domU
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: brade@xxxxxxxxxxxxxxxxxxxxxxxxxx


I am using Xen 4.0.1-rc6 but there was no mathing entry in the Bugzilla version
field.

If I leave the "ethtool -K vif1.0 tx off" out then I won't even get a dhcp
connection in domU. I have to do the ethtool in dom0, it doesn't work at all in
domU.

And if I am using a HVM guest then there is no need for ethtool, it just works
but is using the tap1.0 interface, not the vif1.0 interface.

Here's my configuration:

 dom0:
    * running xen-testing from staging, kernel 2.6.32.19 with pvops
    * network interfaces: peth0, peth1, ppp0
    * bridges: eth0, eth1
    * local net is on bridge eth1 with domUs connected there
    * internet is on ppp0
  domU:
    * running PV-GRUB, kernel 2.6.32.19 as above, but stripped down to 
      the bare minimum
    * only one network interface, dhcp to dom0

relevant domU config:

kernel      = "/usr/lib/xen/boot/pv-grub-x86_64.gz"
extra       = "(hd0)/boot/grub/menu.lst"
disk        = [ 'tap2:tapdisk:aio:/..../root.img,xvda1,w', 
                'tap2:tapdisk:aio:/..../var.img,xvda2,w' ]

boot='c'
sdl=0
vnc=1
vncunused=1
stdvga=1

vif         = [ 'mac=...., bridge=eth1' ]


grub menu.lst:

title vmlinuz-2.6.32.19-domU
   root (hd0)
   kernel /boot/vmlinuz-2.6.32.19 console=hvc0 root=/dev/xvda1 ro

Here's xm list --long:

(domain
    (domid 2)
    (cpu_weight 256)
    (cpu_cap 0)
    (on_crash restart)
    (uuid .....)
    (bootloader_args )
    (vcpus 1)
    (name .....)
    (on_poweroff destroy)
    (on_reboot restart)
    (cpus (()))
    (description )
    (bootloader )
    (maxmem 512)
    (memory 512)
    (shadow_memory 0)
    (features )
    (on_xend_start ignore)
    (on_xend_stop ignore)
    (start_time 1282234728.43)
    (cpu_time 16.594413607)
    (online_vcpus 1)
    (image
        (linux
            (kernel /usr/lib/xen/boot/pv-grub-x86_64.gz)
            (args '(hd0)/boot/grub/menu.lst')
            (superpages 0)
            (tsc_mode 0)
            (videoram 4)
            (pci ())
            (nomigrate 0)
            (notes)
        )
    )
    (status 2)
    (state -b----)
    (store_mfn 1815884)
    (console_mfn 1815883)
    (device
        (vif
            (bridge eth1)
            (mac ....)
            (script '/etc/xen/scripts/vif-bridge bridge=eth1')
            (uuid ....)
            (backend 0)
        )
    )
    (device
        (console
            (protocol vt100)
            (location 2)
            (uuid ....)
        )
    )
    (device
        (tap2
            (protocol x86_64-abi)
            (uuid ....)
            (bootable 1)
            (dev xvda1:disk)
            (uname
                tap:tapdisk:aio:/..../root.img
            )
            (mode w)
            (backend 0)
            (VDI )
        )
    )
    (device
        (tap2
            (protocol x86_64-abi)
            (uuid ....)
            (bootable 0)
            (dev xvda2:disk)
            (uname
                tap:tapdisk:aio:/..../var.img
            )
            (mode w)
            (backend 0)
            (VDI )
        )
    )
)


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