cfg80211: add a helper to identify 6 GHz PSCs (afbc9c9e) · Commits · 戴 / test

This allows identifying whether or not a channel is a PSC (preferred scanning channel). Link: https://lore.kernel.org/r/20200528213443.414363ecf62c.Ic15e681a0e249eab7350a06ceb582cca8bb9a080@changeid Signed-off-by:

include/net/cfg80211.h

+15 −0

Original line number	Diff line number	Diff line
		@@ -5277,6 +5277,21 @@ ieee80211_get_channel(struct wiphy *wiphy, int freq)
		return ieee80211_get_channel_khz(wiphy, MHZ_TO_KHZ(freq));
		}

		/**
		* cfg80211_channel_is_psc - Check if the channel is a 6 GHz PSC
		* @chan: control channel to check
		*
		* The Preferred Scanning Channels (PSC) are defined in
		* Draft IEEE P802.11ax/D5.0, 26.17.2.3.3
		*/
		static inline bool cfg80211_channel_is_psc(struct ieee80211_channel *chan)
		{
		if (chan->band != NL80211_BAND_6GHZ)
		return false;

		return ieee80211_frequency_to_channel(chan->center_freq) % 16 == 5;
		}

		/**
		* ieee80211_get_response_rate - get basic rate for a given rate
		*