IEEE80211_ADDBA_PARAM_POLICY_MASK
BA_para_set |= BIT(1) & IEEE80211_ADDBA_PARAM_POLICY_MASK;
capab |= u16_encode_bits(policy, IEEE80211_ADDBA_PARAM_POLICY_MASK);
ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
capab |= IEEE80211_ADDBA_PARAM_POLICY_MASK;