Re: svn commit: r209611 - head/sys/dev/e1000

On 1 July 2010 02:13, Jack Vogel <[e-mail]> wrote:
> On Wed, Jun 30, 2010 at 2:50 PM, Julian Elischer <[e-mail]>wro=
te:
>
>> On 6/30/10 10:26 AM, Jack F Vogel wrote:
>>
>>> Author: jfv
>>> Date: Wed Jun 30 17:26:47 2010
>>> New Revision: 209611
>>> URL: http://svn.freebsd.org/changeset/base/209611
>>>
>>> Log:
>>> =A0 SR-IOV support added to igb
>>>
>>> =A0 What this provides is support for the 'virtual function'
>>> =A0 interface that a FreeBSD VM may be assigned from a host
>>> =A0 like KVM on Linux, or newer versions of Xen with such
>>> =A0 support.
>>>
>>> =A0 When the guest is set up with the capability, a special
>>> =A0 limited function 82576 PCI device is present in its virtual
>>> =A0 PCI space, so with this driver installed in the guest that
>>> =A0 device will be detected and function nearly like the bare
>>> =A0 metal, as it were.
>>>
>>> =A0 The interface is only allowed a single queue in this configuration
>>> =A0 however initial performance tests have looked very good.
>>>
>>> =A0 Enjoy!!
>>>
>>>
>> do these extra devices turn up in a standard ifconfig output?
>> in other words, can we assign them to jails using vimage?
>>
>>
> They only show up if configured in the PF host, for instance if using Lin=
ux
> and KVM (I did develop and test
> with Fedora 13) you must load the igb driver there specifying that you wa=
nt
> vf's created and how many.
> Next in the management of the guest you need to assign one of these vf
> devices to the guest. After you
> do all that and load this igb driver then yes, it will look just like a
> standard igbX device.
>

Hi, Jack.

I set up qemu-kvm on openSUSE 11.3
 with 82576 PCI device as you described.

Guest fails to attach with:
igb0: <Intel(R) PRO/1000 Network Connection version - 2.0.1> mem
0xf2060000-0xf2063fff,0xf2064000-0xf2067fff at device 5.0 on pci0
igb0: Unable to allocate bus resource: interrupt
device_attach: igb0 attach returned 6

igb0@pci0:0:5:0:        class=3D0x020000 card=3D0xa03c8086 chip=3D0x10ca808=
6
rev=3D0x01 hdr=3D0x00
    vendor     =3D 'Intel Corporation'
    class      =3D network
    subclass   =3D ethernet
    cap 11[40] =3D MSI-X supports 3 messages in map 0x1c

Did  I missed something?

--=20
wbr,
pluknet
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