[ofa-general] vendor_id in struct ib_device_attr

[Matthew Koop]

> Are there many apps out there yet that are depending on iWarp vendor
> ID/part ID?
>
> OMPI uses these to set device-specific values at startup, but we have
> not released this code yet (it will be in our upcoming v1.3 series).
> Does MVAPICH* use them?  What about non-MPI ULPs / applications?

In MVAPICH we do not use the vendor IDs at this time, but instead the
ca_type returned from umad_get_ca.

Matt


>
> My $0.02 is to make it all one namespace since there's precedent for
> it from InfiniBand: OUI's.  Modify the Chelsio and NetEffect drivers
> to return the OUI.  Hopefully, there's not enough iWarp apps out there
> reading this info that it will matter.
>
>
>
> On Jun 23, 2008, at 3:17 PM, Roland Dreier wrote:
>
> > It seems there is some confusion about struct
> > ib_device_attr.vendor_id:
> > mthca and mlx4 are using an OUI for vendor_id, while ipath and cxgb3
> > use
> > the PCI vendor ID (and I don't know what ehca does).  Since these
> > namespaces are not coordinated, there is the (remote) chance of a
> > collision.  As far as I can tell, the ipath usage at least is a bug,
> > since the IB spec says that NodeInfo:VendorID should be "device
> > vendor,
> > per IEEE" suggesting that OUI is the right thing to use.  If that is
> > the
> > case, then it makes sense for iWARP devices to use OUI as well.
> >
> > However changing this means that any apps that look at the vendor_id
> > field need to be updated to handle both the old and new value.
> >
> > This comes up because iw_nes currently doesn't set vendor_id at all,
> > and
> > I wonder what we should stick in there.
> >
> > What do other people think the way forward is?
> >
> > - R.
> >
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>
> --
> Jeff Squyres
> Cisco Systems
>
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