Sean, Thanks – that is so much simpler – it really should be mentioned on https://ofiwg.github.io/libfabric/master/man/fi_eq.3.html that page. It would have saved me a lot of trial and error. JB On 22.02.17, 18:38, "Hefty, Sean" <sean.hefty at intel.com> wrote: ep = container_of(cm_entry.fid, struct fid_ep, fid);