[openib-general] Multicast address aliasing in IPoIB

[Dror Goldenberg]

> -----Original Message-----
> From: Hal Rosenstock [mailto:halr at voltaire.com] 
> Sent: Wednesday, September 15, 2004 12:09 AM
> 
> On Thu, 2004-09-09 at 22:43, Roland Dreier wrote:
> > I see no reason to modify the IPoIB multicast mapping just 
> because the 
> > Linux kernel does not yet have support for it.
> 
> Agreed.

OK. Fine with me.
Note that what it means that Gen2 will be fully compliant. Gen1 may not 
be interoperable / ipoib compliant - because they just can't without a very
ugly hack.

> 
> The only issue I see is where the scope and PKey would come from to 
> form the MGID. The scope could default to link local (2). I 
> would presume the PKey would come from the IPoIB interface somehow.
> 
> -- Hal
> 

Can we leave the pkey part of the MGID blank (e.g. zeroes) to be filled by
the 
underlying driver ? If so, then it should be OK.


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