Re: [Xen-devel] issue using SRIOV "Unable to start - perhaps the PF driver is not up yet", while PF driver is actually up

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Tue, Sep 11, 2012 at 10:32:25AM +0100, Andrew Cooper wrote:
>    On 10/09/12 19:32, Ashok Anand wrote:
> 
>      Any more thoughts on it? I will really appreciate it.
> 
>    Sorry - I am debugging a memory corruption issue, so not paying too close
>    attention to emails.
> 
>    Have you ensured that the pif is up in dom0 before trying to use a vif?
> 

Yes, "ifconfig ethX up" for the PF is required in dom0 before the VF works in 
the VM.

-- Pasi

>    ~Andrew
> 
>      regards,
>      Ashok
> 
>      On Mon, Sep 10, 2012 at 4:16 PM, Ashok Anand <[1]ashok.anand@xxxxxxxxx>
>      wrote:
> 
>        I am passing virtual functions. please see below ,based on the message
>        from lspci.
> 
>          What does lspci -vv for the physical function say?
> 
>          As for the physical function: it is unsafe to pass physical
>          functions to a non-trusted guest, as the physical function has
>          complete control over the all the virtual functions, even if they
>          are passed through to other guests.  For that reason, the physical
>          function should remain in dom0 (or a device driver domain if you are
>          going for disaggregation).
> 
>        here is the message lspci -vv | grep Eth gives me,
>        0f:00.0 Ethernet controller: Intel Corporation 82599EB 10-Gigabit
>        SFI/SFP+ Network Connection (rev 01)
>        Subsystem: Intel Corporation Ethernet Server Adapter X520-2
>        0f:00.1 Ethernet controller: Intel Corporation 82599EB 10-Gigabit
>        SFI/SFP+ Network Connection (rev 01)
>        Subsystem: Intel Corporation Ethernet Server Adapter X520-2
>        0f:10.0 Ethernet controller: Intel Corporation 82599 Ethernet
>        Controller Virtual Function (rev 01)
>        0f:10.2 Ethernet controller: Intel Corporation 82599 Ethernet
>        Controller Virtual Function (rev 01)
>        0f:10.4 Ethernet controller: Intel Corporation 82599 Ethernet
>        Controller Virtual Function (rev 01)
>        0f:10.6 Ethernet controller: Intel Corporation 82599 Ethernet
>        Controller Virtual Function (rev 01)
>        0f:11.0 Ethernet controller: Intel Corporation 82599 Ethernet
>        Controller Virtual Function (rev 01)
>        0f:11.2 Ethernet controller: Intel Corporation 82599 Ethernet
>        Controller Virtual Function (rev 01)
>        0f:11.4 Ethernet controller: Intel Corporation 82599 Ethernet
>        Controller Virtual Function (rev 01)
>        0f:11.6 Ethernet controller: Intel Corporation 82599 Ethernet
>        Controller Virtual Function (rev 01)
>        Here, 0f:00.0 is the physical function, while 0f:10.0 and others are
>        virtual functions -- so I am attaching virtual functions.
> 
> 
>                i attach 0f:10.0 to a domU ubuntu machine, xm pci-attach
>                ubuntu 0f:10.0
>                on my dom0 machine, i can ping other machine using eth2,
>                (implying PF on eth2 is active)
>                on my domU machine, when i attach the virtual function, i get
>                the following messages
>                [2][ 2282.688356] ixgbevf 0000:00:00.0: Xen PCI mapped GSI0 to
>                IRQ28
>                [3][ 2282.688470] ixgbevf 0000:00:00.0: setting latency timer
>                to 64
>                [4][ 2282.690187] ixgbevf 0000:00:00.0: PF still in reset
>                state, assigning new address
>                while PF on eth2 is  there and active, since i can ping other
>                machine.
>                Now, when I try to bring up the VF interface on domU,
>                 i get the following error
>                 2476.295582] Unable to start - perhaps the PF Driver isn't up
>                yet
>                SIOCSIFFLAGS: Network is down
>                [ 2476.296917] Unable to start - perhaps the PF Driver isn't
>                up yet
>                SIOCSIFFLAGS: Network is down
>                and on dmesg on domU,
>                [ 2476.295582] Unable to start - perhaps the PF Driver isn't
>                up yet
>                [ 2476.296917] Unable to start - perhaps the PF Driver isn't
>                up yet
>                Any thoughts on what could be wrong? I have been struggling
>                with this for quite some time
>                and would really appreciate your thoughts on it.
>                Thanks,
>                Ashok
> 
>  --
>  Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
>  T: [5]+44 (0)1223 225 900, [6]http://www.citrix.com
> 
>              _______________________________________________
>              Xen-devel mailing list
>              [7]Xen-devel@xxxxxxxxxxxxx
>              [8]http://lists.xen.org/xen-devel
> 
>  --
>  Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
>  T: [9]+44 (0)1223 225 900, [10]http://www.citrix.com
> 
>  --
>  Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
>  T: +44 (0)1223 225 900, [11]http://www.citrix.com
> 
> References
> 
>    Visible links
>    1. mailto:ashok.anand@xxxxxxxxx
>    2. file:///tmp/tel:%5B%202282.688356
>    3. file:///tmp/tel:%5B%202282.688470
>    4. file:///tmp/tel:%5B%202282.690187
>    5. file:///tmp/tel:%2B44%20%280%291223%20225%20900
>    6. http://www.citrix.com/
>    7. mailto:Xen-devel@xxxxxxxxxxxxx
>    8. http://lists.xen.org/xen-devel
>    9. file:///tmp/tel:%2B44%20%280%291223%20225%20900
>   10. http://www.citrix.com/
>   11. http://www.citrix.com/

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