zfcp_qdio_fill_next
zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));