[ewg] [PATCH] Make multicast and path record queue flexible.

[Alekseys Senin]

On Tue, 2010-10-05 at 14:12 -0500, Christoph Lameter wrote:

> On Tue, 5 Oct 2010, Jason Gunthorpe wrote:
> 
> > On Tue, Oct 05, 2010 at 06:07:37PM +0200, Aleksey Senin wrote:
> > > When using slow SM allow more packets to be buffered before answer
> > > comming back. This patch based on idea of Christoph Lameter.
> > >
> > > http://lists.openfabrics.org/pipermail/general/2009-June/059853.html
> >
> > IMHO, I think it is better to send multicasts to the broadcast MLID than to
> > queue them.. More like ethernet that way.
> 
> I agree. We had similar ideas. However, the kernel does send igmp
> reports to the MC address not to 244.0.0.2. We would have to redirect at
> the IB layer until multicast via MLID becomes functional. We cannot tell
> when that will be the case.
> 
> 


But what if it will not be available from some reason? How long should
we wait? Do we need implement another queue/counter/timeout? 
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