> -----Original Message-----
> From: Steve Wise [mailto:swise@opengridcomputing.com]
> Sent: Sunday, April 27, 2008 12:45 PM
> To: Roland Dreier
> Cc: netdev@vger.kernel.org; general@lists.openfabrics.org;
> linux-kernel@vger.kernel.org;
divy@chelsio.com
> Subject: Re: [ofa-general] [PATCH 2.6.26 3/3] RDMA/cxgb3:
> Support peer-2-peerconnection setup.
>
>
>
> Roland Dreier wrote:
> > What are the interoperability implications of this?
> >
> > Looking closer I see that iw_nes has the send_first module
> parameter.
> > How does this interact with that?
> >
>
> It doesn't...yet. But we wanted to enable these applications
> for chelsio now and get the low level fw and driver changes
> done first and tested.
>
> > I guess it's fine to apply this, but do we have a plan for
> how we want
> > to handle this issue in the long-term?
> >
>
> Yes! If you'll recall, we had a thread on the ofa general
> list discussing how to enhance the MPA negotiation so peers
> can indicate whether they want/need the RTR and what type of
> RTR (0B read, 0B write, or 0B send) should be sent. This
> will be done by standardizing a few bits of the private data
> in order to negotiate all this. The rdma-cma API will be
> extended so applications will have to request this
> peer-2-peer model since it adds overhead to the connection setup.
>
> I plan to do this work for 2.6.27/ofed-1.4. I think it was
> listed in Felix's talk at Sonoma. This work (design, API,
> and code changes affecting core and placing requirements on
> iwarp providers) will be posted as RFC changes to get
> everyones feedback as soon as I get something going.
>
> Does that sound ok?
>
>
> Steve.
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