[ofw] Expose a vendor defined device in ibbus?

Leonid Keller leonid at mellanox.co.il
Wed Dec 17 01:11:09 PST 2008


There is no way to add this functionality without changes in IBAL.
There is a static solution - via Registry or a dynamic one - via WMI. 

> How does IOU device get notification and thus create PDO?
IBAL requests SA whether there are IOU devices registered. 

> -----Original Message-----
> From: ofw-bounces at lists.openfabrics.org 
> [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of James Yang
> Sent: Monday, December 15, 2008 8:56 PM
> To: ofw at lists.openfabrics.org
> Subject: [ofw] Expose a vendor defined device in ibbus?
> 
> Hi,
> 
> I need to have IB drivers expose a new device for us. The 
> device could be similar to IPoIB or IOU device, it may have 
> device id IBA\vendorx. My question is what is the best way to 
> achieve this? One easy way I can think of is to modify IBBUS 
> driver and expose a new device similar to IPoIB, I can read 
> registry key and decide if I need to expose this new device 
> or not. The default is to turn this new device cap off so 
> that it will not have any impact or current code.
> 
> Is there any other better way to achieve this? Without 
> modifying current IB stack code, is it possible to create a 
> user defined IB device, such as through Subnet Manager etc? 
> How does IOU device get notification and thus create PDO?
> 
> If there is no better/straightforward way to add a new IB 
> device, I will submit a patch to add a new user defined IB 
> device through registry key.
> 
> Please provide your opinion.
> 
> Thanks,
> James
> 
> 
> 
> 
> 
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