[openib-general] [PATCH] librdmacm: fix bug causing failure to work with partial membership pkey

[Sean Hefty]

>An IB multicast group _cannot_ have partial members so this never should
>get far enough to where two limited members would be unable to
>communicate.

Can someone help my understanding here?  Is ipoib joining a multicast group
using the full membership PKey, even if the node that it joins from only has the
limited membership PKey configured?  And the code in ib_find_cached_pkey helps
enable this?

- Sean