[openib-general] [PATCH] IPoIB CM Experimental support

[Michael S. Tsirkin]

> Quoting r. Scott Weitzenkamp (sweitzen) <sweitzen at cisco.com>:
> Subject: RE: [openib-general] [PATCH] IPoIB CM Experimental support
> 
> > d. Limitations
> > UDP multicast and UDP connections to IPoIB UD mode
> > currently don't work since we get packets that are too large to
> > send over a UD QP.
> > As a work around, one can now create separate interfaces
> > for use with CM and UD mode.
> 
> You can't send UDP/multicast traffic at all between IPoIB CM and IPoIB
> UD?

With my experimental code, this currently works only if you manually limit the MTU
for multicast/UD addresses.
The simplest way to do this is to set up separate interfaces for CM and UD modes.

> What about UDP/multicast between IPoIB CM hosts?

As above.

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MST