On Fri, 7 Jun 2019 01:04:14 +0000, Bshara, Nafea wrote:
> On Jun 6, 2019, at 4:43 PM, Jakub Kicinski wrote:
> >>> Okay, then you know which one is which. Are there multiple ENAs but
> >>> one EFA?
> >>
> >> Yes, very possible. Very common
> >>
> >> Typical use case that instances have one ena for control plane, one
> >> for internet facing , and one 100G ena that also have efa capabilities
> >
> > I see, and those are PCI devices.. Some form of platform data would
> > seem like the best fit to me. There is something called:
> >
> > /sys/bus/pci/${dbdf}/label
> >
> > It seems to come from some ACPI table - DSM maybe? I think you can put
> > whatever string you want there 🤔
>
> Acpi path won’t work, much of thee interface are hot attached, using
> native pcie hot plug and acpi won’t be involved.
Perhaps hotplug break DSM, I won't pretend to be an ACPI expert. So you
can find a way to stuff the label into that file from another source.
There's also VPD, or custom PCI caps, but platform data generally seems
like a better idea.
