[ofa-general] Re: [RFC] [PATCH 0/3] 2.6.22 or 23 ib: add path record cache

[Hal Rosenstock]

On Wed, 2007-04-25 at 16:29, Michael S. Tsirkin wrote:
> > Quoting Hal Rosenstock <halr at voltaire.com>:
> > Subject: RE: [RFC] [PATCH 0/3] 2.6.22 or 23 ib: add path record cache
> > 
> > On Mon, 2007-04-23 at 17:32, Sean Hefty wrote:
> > > >Isn't there a way to get notice for this?
> > > 
> > > The closest trap I'm aware of is GID in/out of service.  See 14.2.5.1 and
> > > 14.4.9.  GID in/out of service is related to the existence of a path record
> > > between the SGID and DGID.  If the path record parameters change, I'm not sure
> > > if the GID technically goes out, then back into service or not.  Maybe Hal
> > > knows.
> > 
> > No; there is no way to do this that I'm aware of.
> 
> We can get notic on port state changes though, can't we?

Sure but those were intended for SM. The end node would then need to do
DR SMP stuff (not just diagnostics) and there would be MKey assumptions
as well as other things. DR SMPs are always slow pathed and there is no
flow control on VL15.

-- Hal

> [snip...]