ieee80211_chan_width_to_rx_bw
bw = ieee80211_chan_width_to_rx_bw(conf->def.width);
bw = min(bw, ieee80211_chan_width_to_rx_bw(sta->tdls_chandef.width));
bw = min(bw, ieee80211_chan_width_to_rx_bw(bss_width));