get_send_wqe
buf = get_send_wqe(qp, n & (qp->sq.wqe_cnt - 1));
ctrl = get_send_wqe(qp, i);
ctrl = wqe = get_send_wqe(qp, ind & (qp->sq.wqe_cnt - 1));
next = get_send_wqe(qp, i);
qp->sq.last = get_send_wqe(qp, qp->sq.max - 1);
wqe = get_send_wqe(qp, ind);
wqe = get_send_wqe(qp, ind);
next = get_send_wqe(qp, index);
qp->sq.last = get_send_wqe(qp, qp->sq.max - 1);