Hi Johannes, Currently for MLO test, the others links's rx_nss of struct ieee80211_link_sta is still value 0 in ieee80211_set_associated(), becaue they are not pass into ieee80211_sta_set_rx_nss() in mac80211 except the deflink which means the primary link in rate_control_rate_init(). This lead driver get nss = 0 for other links. Will you fix it or is it design by default? Only primary link has valid rx_nss value which is not 0 by below call stack. ieee80211_assoc_success() ->rate_control_rate_init(sta); ->ieee80211_sta_set_rx_nss(&sta->deflink);