[openib-general] Re: [PATCH] [mthca]: fixed fields in query_port

[Jack Morgenstein]

On Sat, Oct 01, 2005 at 11:05:27PM +0300, Roland Dreier wrote:
> In fact is there any reason to have the max_vl_num field be returned
> from the query_port method?  I don't see anything sensible a consumer
> can do with the value, and I would think consumers should just be
> using service levels rather than worrying about the next hop VL.  So
> maybe we should just delete the field entirely.
> 

I agree.  That value is only of interest to the SM, for use in SL-to-VL mapping
(IB Spec 3.5.7) -- and the SM obtains this value via a MAD query.  Applications
should use the SL field in packets for specifying a QoS (in the future)-- and 
should not even be aware of VL's.

Anyone else have an opinion?

Jack