MT_WMM_CWMIN_SHIFT
val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(queue));
val |= cw_min << MT_WMM_CWMIN_SHIFT(queue);
val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(qid));
val |= cw_min << MT_WMM_CWMIN_SHIFT(qid);
val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(hw_q));
val |= cw_min << MT_WMM_CWMIN_SHIFT(hw_q);