Re: biosdevname hitting rawhide

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On Wed, Dec 01, 2010 at 01:18:09PM -0500, Przemek Klosowski wrote:
> On 11/30/2010 05:24 PM, Matt Domsch wrote:
> > On Tue, Nov 30, 2010 at 04:22:54PM -0600, Matt Domsch wrote:
> >> On Tue, Nov 30, 2010 at 04:18:10PM -0600, Michael Cronenworth wrote:
> 
> >>> Many desktops have dual-NICs. I'm typing from an SMBIOS 2.6 ASUS desktop
> >>> motherboard with dual-NICs.
> >>>
> >>> Handle 0x002D, DMI type 10, 6 bytes
> >>> On Board Device Information
> >>>           Type: Ethernet
> >>>           Status: Enabled
> >>>           Description: Onboard Ethernet
> >>>
> >>> Handle 0x003D, DMI type 41, 11 bytes
> >>> Onboard Device
> >>>           Reference Designation: Onboard Ethernet
> >>>           Type: Ethernet
> >>>           Status: Enabled
> >>>           Type Instance: 0
> >>
>                             ^^^^^
> >
> > specifically, em0 for the above device, and em<Type Instance>  for the
> > second NIC specified in SMBIOS...
> >
> 
> Huh? so the first device (handle 2D) will be called 'em0' and the second 
> device (handle 3D) will be also called 'em0'?

No.  Handle 2D and handle 3D are the same object fundamentally.  Type
41 obsoleted Type 10 and subsumed all its information, adding more and
making it extensable. BIOS is encouraged to present both so that
legacy OSs that don't know about Type 41 still continue to work,
albeit without the new information Type 41 provides.

This one device will only appear as em0.

Thanks,
Matt

-- 
Matt Domsch
Technology Strategist
Dell | Office of the CTO
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