IEEE80211_HE_MCS_FOR_SS_SHIFT
IEEE80211_HE_MCS_FOR_SS_SHIFT(1);
IEEE80211_HE_MCS_FOR_SS_SHIFT(1)) == IEEE80211_HE_MCS_SS_NOT_SUPP)
IEEE80211_HE_MCS_FOR_SS_SHIFT(n);
IEEE80211_HE_MCS_FOR_SS_SHIFT(n);