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

[Andrew Cooper <andrew.cooper3@citrix.com>]

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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?

~Andrew

>
> regards,
> Ashok
>
> On Mon, Sep 10, 2012 at 4:16 PM, Ashok Anand <ashok.anand@gmail.com
> <mailto:ashok.anand@gmail.com>> 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
>>>
>>>             [ 2282.688356 <tel:%5B%202282.688356>] ixgbevf
>>>             0000:00:00.0: Xen PCI mapped GSI0 to IRQ28
>>>             [ 2282.688470 <tel:%5B%202282.688470>] ixgbevf
>>>             0000:00:00.0: setting latency timer to 64
>>>             [ 2282.690187 <tel:%5B%202282.690187>] 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: +44 (0)1223 225 900 <tel:%2B44%20%280%291223%20225%20900>, http://www.citrix.com
>>
>>
>>             _______________________________________________
>>             Xen-devel mailing list
>>             Xen-devel@lists.xen.org <mailto:Xen-devel@lists.xen.org>
>>             http://lists.xen.org/xen-devel
>>
>>
>
>         -- 
>         Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
>         T: +44 (0)1223 225 900 <tel:%2B44%20%280%291223%20225%20900>, http://www.citrix.com
>
>
>

-- 
Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
T: +44 (0)1223 225 900, http://www.citrix.com


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