cfg80211: add KHz variants of frame RX API

Drivers may wish to report the RX frequency in units of
KHz. Provide cfg80211_rx_mgmt_khz() and wrap it with
cfg80211_rx_mgmt() so exisiting drivers which can't report
KHz anyway don't need to change. Add a similar wrapper for
cfg80211_report_obss_beacon() so the frequency units stay
somewhat consistent.

This doesn't actually change the nl80211 API yet.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200430172554.18383-2-thomas@adapt-ip.com
[fix mac80211 calling the non-khz version of obss beacon report,
 drop trace point name changes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 49 insertions, 5 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 5cacf24cc9f0..7415f77d99ca 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -6989,6 +6989,26 @@ void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
 			  gfp_t gfp);
 
 /**
+ * cfg80211_rx_mgmt_khz - notification of received, unprocessed management frame
+ * @wdev: wireless device receiving the frame
+ * @freq: Frequency on which the frame was received in KHz
+ * @sig_dbm: signal strength in dBm, or 0 if unknown
+ * @buf: Management frame (header + body)
+ * @len: length of the frame data
+ * @flags: flags, as defined in enum nl80211_rxmgmt_flags
+ *
+ * This function is called whenever an Action frame is received for a station
+ * mode interface, but is not processed in kernel.
+ *
+ * Return: %true if a user space application has registered for this frame.
+ * For action frames, that makes it responsible for rejecting unrecognized
+ * action frames; %false otherwise, in which case for action frames the
+ * driver is responsible for rejecting the frame.
+ */
+bool cfg80211_rx_mgmt_khz(struct wireless_dev *wdev, int freq, int sig_dbm,
+			  const u8 *buf, size_t len, u32 flags);
+
+/**
  * cfg80211_rx_mgmt - notification of received, unprocessed management frame
  * @wdev: wireless device receiving the frame
  * @freq: Frequency on which the frame was received in MHz
@@ -7005,8 +7025,13 @@ void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
  * action frames; %false otherwise, in which case for action frames the
  * driver is responsible for rejecting the frame.
  */
-bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
-		      const u8 *buf, size_t len, u32 flags);
+static inline bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq,
+				    int sig_dbm, const u8 *buf, size_t len,
+				    u32 flags)
+{
+	return cfg80211_rx_mgmt_khz(wdev, MHZ_TO_KHZ(freq), sig_dbm, buf, len,
+				    flags);
+}
 
 /**
  * cfg80211_mgmt_tx_status - notification of TX status for management frame
@@ -7205,6 +7230,21 @@ void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
 			   bool is_valid_ack_signal, gfp_t gfp);
 
 /**
+ * cfg80211_report_obss_beacon_khz - report beacon from other APs
+ * @wiphy: The wiphy that received the beacon
+ * @frame: the frame
+ * @len: length of the frame
+ * @freq: frequency the frame was received on in KHz
+ * @sig_dbm: signal strength in dBm, or 0 if unknown
+ *
+ * Use this function to report to userspace when a beacon was
+ * received. It is not useful to call this when there is no
+ * netdev that is in AP/GO mode.
+ */
+void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
+				     size_t len, int freq, int sig_dbm);
+
+/**
  * cfg80211_report_obss_beacon - report beacon from other APs
  * @wiphy: The wiphy that received the beacon
  * @frame: the frame
@@ -7216,9 +7256,13 @@ void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
  * received. It is not useful to call this when there is no
  * netdev that is in AP/GO mode.
  */
-void cfg80211_report_obss_beacon(struct wiphy *wiphy,
-				 const u8 *frame, size_t len,
-				 int freq, int sig_dbm);
+static inline void cfg80211_report_obss_beacon(struct wiphy *wiphy,
+					       const u8 *frame, size_t len,
+					       int freq, int sig_dbm)
+{
+	cfg80211_report_obss_beacon_khz(wiphy, frame, len, MHZ_TO_KHZ(freq),
+					sig_dbm);
+}
 
 /**
  * cfg80211_reg_can_beacon - check if beaconing is allowed