[ofw] Expose a vendor defined device in ibbus?

[Fab Tillier]

> On Wed, Dec 17, 2008 at 11:43 PM, Fab Tillier
> <ftillier at windows.microsoft.com> wrote:
>> Are there other properties that I have missed that are needed?
>
> We need a way in which devices created should be configured for
> failovers ( ULPs like VNIC, SRP need more configurable failovers).
> Looking at IBAL's code it create the devices based on the reachable
> IOC's and thus failover's are possible across the HCA/ports and not
> across two different IOCs.
> Users can have a case in which two different IOCs connected to same
> physical network/storage (redundancy is provided for high availability)
> and want a failover across the IOCs.

This would be done via LBFO for network devices, and MPIO for storage devices.  I think having the bus driver report a single IOC that really maps to two IOCs on the fabric is asking for management problems.  Further, LBFO/MPIO can provide failover between different device types, so the failover devices don't have to be identical HW.

-Fab