Re: Proposed F19 Feature: systemd/udev Predictable Network Interface Names

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Kay Sievers (kay@xxxxxxxx) said: 
> On Mon, Feb 25, 2013 at 6:02 PM, Andy Gospodarek <agospoda@xxxxxxxxxx> wrote:
> 
> >> > I'd like to see kernel driver work to be sure every multi-port driver
> >> > with the same PCI b/d/b/f sets dev_id.  That isn't necessarily true
> >> > today, which makes it hard to trust.  biosdevname needs this too,
> >> > until such a time as it's dead.
> 
> >> Do we have a list of these, or is it a matter of doing a driver audit?
> >> CC'ing gospo.
> 
> > Right now almost no drivers actually set dev_id.  In fact mlx4_en,
> > cxgb4, and sfc seem to be the only ones right now.  If we feel like this
> > a requirement there will be work on the kernel side to add this.
> 
> This only matters if there are multiple devices created by a driver
> for one and the same pci device. Like when we have only one entry in
> lspci, but multiple interfaces of the same type having this one device
> as a parent.
> 
> Is this really common? I would expect this is a very rare exception.

It definitely happens with some drivers, because I remember back in the
ancient ancient kudzu days having to hack in a fix for this.

The guilty driver in that initial case was Chelsio cxgb3, so it apparently
would need fixed per above.

Bill
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