rvt_add_retry_timer_ext
rvt_add_retry_timer_ext(qp, priv->timeout_shift);
EXPORT_SYMBOL(rvt_add_retry_timer_ext);
void rvt_add_retry_timer_ext(struct rvt_qp *qp, u8 shift);
rvt_add_retry_timer_ext(qp, 0);