MAX_SP_DESC_CNT
if (bp->cnic_kwq_pending == MAX_SP_DESC_CNT)
bp->cnic_kwq_last = bp->cnic_kwq + MAX_SP_DESC_CNT;
bp->spq_last_bd = bp->spq_prod_bd + MAX_SP_DESC_CNT;
min_t(int, MAX_SP_DESC_CNT - MAX_SPQ_PENDING, NUM_EQ_DESC) - 1);