IEEE80211_CHAN_GFSK
(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK)
(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_GFSK | \
(((_c)->ic_flags & IEEE80211_CHAN_GFSK) != 0)