[ofa-general] InfiniBand/RDMA merge plans for 2.6.24

[Hal Rosenstock]

On Thu, 2007-09-13 at 11:20 -0700, Sean Hefty wrote:
> > - My user_mad P_Key index support patch.  I'll test the ioctl to
> >   change to the new mode and merge this I guess, since Hal and Sean
> >   have tested this out.
> 
> I can give this patch a reviewed-by: too, and I will also try to review a couple
> of the pending ipoib patches.
> 
> > - Sean's QoS changes.  These look fine at first glance, and I just
> >   plan to understand the backwards compatibility story (ie how this
> >   works with an old SM) and merge.  Anyone who objects let me know.
> 
> The new QoS fields fall into fields that are currently reserved, which should be
> ignored by an older SM.

By older, you mean one which doesn't support QoS (as indicated by the
setting in SA's ClassPortInfo).

>   I've only tested this against openSM however.

in non QoS mode, right ?

Has anyone tested these with QoS actually be used ? I suppose this
requires Connect-X.

-- Hal

> > - Sean's IB CM MRA interface changes.  Don't know at this point.  It
> >   seems OK but I'm not clear on what if any real-world improvement
> >   this gives us.
> 
> This patch was generated in response to an Intel MPI issue.  We've seen MPI take
> several minutes to respond to a connection request during the middle of large
> application runs.  When this happens, the active side times out the connection.
> In OFED, we added module parameters to adjust the rdma_cm connection timeout on
> the active side, but I believe that sending an MRA from the passive side is a
> better solution.
> 
> - Sean
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