fmd_xprt_class_hash_insert
refs = fmd_xprt_class_hash_insert(xip, &xip->xi_rsub, class);
(void) fmd_xprt_class_hash_insert(xip, &xip->xi_usub, class);
(void) fmd_xprt_class_hash_insert(xip, &xip->xi_lsub, class);