IQ_INSTR_SPACE
if (likely((IQ_INSTR_SPACE(iq)) >
if (unlikely(IQ_INSTR_SPACE(iq) >
(IQ_INSTR_SPACE(iq) >
ret = netif_subqueue_maybe_stop(iq->netdev, iq->q_no, IQ_INSTR_SPACE(iq),
compl_bytes, IQ_INSTR_SPACE(iq),