[openib-general] DAPL for openib

[Yaron Haviv]

> -----Original Message-----
> From: openib-general-bounces at openib.org [mailto:openib-general-
> bounces at openib.org] On Behalf Of Sean Hefty
> Sent: Tuesday, August 24, 2004 6:52 PM
> To: Roland Dreier
> Cc: openib-general at openib.org
> Subject: Re: [openib-general] DAPL for openib
> 
> On Tue, 24 Aug 2004 08:54:34 -0700
> Roland Dreier <roland at topspin.com> wrote:
> 
> > I haven't been following this very closely but I didn't feel we had
> > reached a final form of the API, and Sean's ib_mad.h has not been
> > updated for several weeks.  Also (correct me if I'm wrong) you seem
to
> > be working on an implementation of a different API.
> 
> I thought that we were pretty much in agreement with the API as
defined in
> ib_mad.h.  There are some MAD related issues in
trunk/contrib/intel/TODO,
> however.  We decided to defer some of the QP redirection issues on the
> client side, but that may or may not affect the API.

I was also under the impression at least the GSI was agreed on
Hal is working on implementing it, if it wasn't clear from his postings 

> 
> > Also, I can think of at least one issue with the ib_mad.h API, and
> > other people probably have their own issues.  My question is how we
> > should split SM class queries such as PortInfo, which go to the SMA,
> > from queries such as SMInfo, which needs to be passed to userspace
to
> > be handled by the SM.  Right now the ib_mad_reg() call just takes
> > class, version and method, but both PortInfo and SMInfo will be
> > identical in those attributes.
> 
> We need to discuss how to route MADs to the SMA.  Are you suggesting
that
> the SMA would register for MADs the same as any other client?  My plan
was
> to extend the ib_mad_reg_req structure as needed.  I limited it to
> version, class, method currently, since it easily allows O(1) routing.
We
> could add in AttributeID and AttributeModifier if those are needed.

Any reason to keep the same registration API for both SMA (QP0) and GSI
?
There is very little in common between the two, beside the fact that
both use MAD's  

Yaron