atomic_fetchadd_32
#define MTW_CMDQ_GET(c) (atomic_fetchadd_32((c), 1) & MTW_CMDQ_MASQ)
#define RUN_CMDQ_GET(c) (atomic_fetchadd_32((c), 1) & RUN_CMDQ_MASQ)
ostate = atomic_fetchadd_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
ostate = atomic_fetchadd_32(&vap->iv_com_state, -IEEE80211_COM_REF_ADD);