rdma_map_id2qphdl
rdma_map_id2qphdl(idp, (void *)qp->ibt_qp);
rdma_map_id2qphdl(chanp->chan_rdma_id, qphdl);
rdma_map_id2qphdl(chanp->chan_rdma_id, qphdl);
void rdma_map_id2qphdl(struct rdma_cm_id *id, void *qp_hdl);