cfg80211_chandef_dfs_usable 473 net/wireless/core.h bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy, cfg80211_chandef_dfs_usable 8357 net/wireless/nl80211.c if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) cfg80211_chandef_dfs_usable 3909 net/wireless/reg.c !cfg80211_chandef_dfs_usable(&rdev->wiphy, &wdev->chandef))