RE: [PATCH 1/1] Ibacm: default pkey for partitioned fabrics

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> -----Original Message-----
> From: Hefty, Sean
> Sent: Wednesday, December 09, 2015 1:37 PM
> To: Jason Gunthorpe
> Cc: Hal Rosenstock; Wan, Kaike; linux-rdma@xxxxxxxxxxxxxxx
> Subject: RE: [PATCH 1/1] Ibacm: default pkey for partitioned fabrics
> 
> > pkey[0] at least has the logic that the admin will configure things so
> > that the default ipoib device reaches the broadest audiance makes the
> > most sense to me. That is what most sites I've seen want to do.
> 
> Kaike, will pkey[0] work in the configurations that you're targeting with this
> change?

Yes. That will work for me.

> 
> This seems like a very simple solution that's better than what we have now.
> 
> > I'm not quite sure what the acm algorithm is, but can't it just figure
> > out the pkey from the IP routing? Ie if you have an IP address to
> > resolve a few netlink queries will tell you what pkey to use, and that
> > is where the acm multicast should go?
> 
> When an IP address is used, it uses the correct pkey (based on routing data).
> I mentioned this in a separate email, but this addresses the case when
> hostnames are used and ipoib may not be involved.
> 
> - Sean
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