[ofa-general] IPOIB CM (NOSRQ) patch -memory footprint

[Michael S. Tsirkin]

> Quoting Shirley Ma <xma at us.ibm.com>:
> Subject: Re: [ofa-general] IPOIB CM (NOSRQ) patch -memory footprint
> 
> Hello Michael,
> 
> > I've just answered in another thread. Summary:
> > I think that to enable connected mode on ehca, what we need is
> >
> > 1. A way to make IPoIB fall back on datagram mode when you run out of
> >    resources.  This might need to be addressed at the protocol level.
> 
> My point of view this, if we run out of resource, there is nothing we can do.

Yes. So we need to fall back to datagram before running out of resources.

> There won't be any new connections, just like native RC mode.  I think this is
> a generic RC issue, w/o SRQ just will hit this sooner.

I don't think that's true: with SRQ we *never* run out of memory for
RX buffers.

-- 
MST