[openib-general] Re: [PATCH] [CM] 2/2 Fix CM redirection in SRP

[Fab Tillier]

> From: Sean Hefty [mailto:mshefty at ichips.intel.com]
> Sent: Wednesday, September 07, 2005 11:55 AM
> 
> Fab Tillier wrote:
> >>I'm not sure.  The first thought that comes to mind is having a MAD
> >>redirection module that the CM could query before sending any message.
> >
> > Since the ARI for a redirect is defined by the IB spec, why not have
> > the CM just update the redirect_qpn (or better yet the forthcoming
> > redirection gizmo) itself when it receives such an REJ?
> 
> The CM still needs to know that redirection should occur, cache that
> information somewhere, and use it for other CM traffic to that same
> destination.  Updating the redirect_qpn only fixes the issue for that
> single connection.  My thought was to have a module that the CM would
> call to insert a redirected endpoint, and then call again to see if an
> outbound MAD should be redirected.  Hopefully, such a module could be
> defined to be useful for other management classes.

Right, hence the "or better yet the forthcoming redirection gizmo".  My point
was that the CM should handle this, not the CM client (in this case SDP).

- Fab