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

[Jason Gunthorpe]

On Wed, Oct 06, 2010 at 11:16:59AM -0500, Christoph Lameter wrote:

> > Relating to broadcast, I don't think that this is a good solution it
> > will bring unwarranted load, specially in the case if no MLID received.
> > The way of adding delay before we start to send packages, seems to me
> > better.
> 
> Broadcast is a temporary solution and it only occurs with in an IB
> partition. It would be a problem if one host suddenly starts sending
> at full line speed. Maybe have that configurable?

Right, and keep in mind that sending a packet with the broadcast MLID
and group-specific MGID will still result in the HCA's filtering based
on MGID. Personally, I'm not concerned about flooding - this is how
things work in ethernet - any sane app will need some way to cope with
that.

Jason