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RE: [Xen-users] GPL PV drivers for Windows 0.9.11-pre12


  • To: "Joost van den Broek" <jvandenbroek@xxxxxxxxx>
  • From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
  • Date: Wed, 27 Aug 2008 14:26:28 +1000
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 26 Aug 2008 21:27:04 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AckHxk5V8U8/T3eXRtCAnkQiYYFKsgANnx4A
  • Thread-topic: [Xen-users] GPL PV drivers for Windows 0.9.11-pre12

> > That is only udp large send offload. The one you want to notice is
'tcp
> > segmentation offload', which is 'on' on my system.
> >
> My mistake again, tso is off and can't be enabled manually with
ethtool.

No idea. What does lspci -v tell you? Mine says:

08:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721
Gigabit Ethernet PCI Express (rev 21)
        Subsystem: Hewlett-Packard Company Device 7032
        Flags: bus master, fast devsel, latency 0, IRQ 18
        Memory at fdff0000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [48] Power Management version 2
        Capabilities: [50] Vital Product Data <?>
        Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+
Queue=0/3 Enable-
        Capabilities: [d0] Express Endpoint, MSI 00
        Kernel driver in use: tg3
        Kernel modules: tg3, ipmi_si

> 
> Here is the output of xenstore-ls:
> 0 = ""
>  backend-id = "0"
>  mac = "00:04:fc:40:e4:22"
>  handle = "0"
>  state = "4"
>  backend = "/local/domain/0/backend/vif/12/0"
>  tx-ring-ref = "15992"
>  rx-ring-ref = "15960"
>  event-channel = "7"
>  feature-no-csum-offload = "0"
>  feature-sg = "1"
>  feature-gso-tcpv4 = "0"
>  request-rx-copy = "1"
>  feature-rx-notify = "1"
> 
> Any idea why my tso is disabled and yours not? Btw, I'm happy with the
> results so far, so if it's too much trouble to get this working, we
can
> leave this one alone. I guess it's my problem the system / kernel
> doesn't support tso, it's just strange that we both test on the same
> system with different results.

Can you also do the xenstore-ls on the backend? Eg from your line above:
backend = "/local/domain/0/backend/vif/12/0"
do 'xenstore-ls /local/domain/0/backend/vif/12/0'

James

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