ath: add support to get the detected radar specifications

This enables ath10k/ath9k drivers to collect the specifications of the
radar type once it is detected by the dfs pattern detector unit.
Usage of the collected info is specific to driver implementation.
For example, collected radar info could be used by the host driver
to send to co-processors for additional processing/validation.

Note: 'radar_detector_specs' data containing the specifications of
different radar types which was private within dfs_pattern_detector/
dfs_pri_detector is now shared with drivers as well for making use
of this information.
Signed-off-by: Sriram R <srirrama@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/ath10k/wmi.c

@@ -3757,7 +3757,7 @@ static void ath10k_dfs_radar_report(struct ath10k *ar,
 
 	ATH10K_DFS_STAT_INC(ar, pulses_detected);
 
-	if (!ar->dfs_detector->add_pulse(ar->dfs_detector, &pe)) {
+	if (!ar->dfs_detector->add_pulse(ar->dfs_detector, &pe, NULL)) {
 		ath10k_dbg(ar, ATH10K_DBG_REGULATORY,
 			   "dfs no pulse pattern detected, yet\n");
 		return;

drivers/net/wireless/ath/ath9k/dfs.c

@@ -277,7 +277,7 @@ ath9k_dfs_process_radar_pulse(struct ath_softc *sc, struct pulse_event *pe)
 	DFS_STAT_INC(sc, pulses_processed);
 	if (pd == NULL)
 		return;
-	if (!pd->add_pulse(pd, pe))
+	if (!pd->add_pulse(pd, pe, NULL))
 		return;
 	DFS_STAT_INC(sc, radar_detected);
 	ieee80211_radar_detected(sc->hw);

drivers/net/wireless/ath/dfs_pattern_detector.c

@@ -268,7 +268,8 @@ static void dpd_exit(struct dfs_pattern_detector *dpd)
 }
 
 static bool
-dpd_add_pulse(struct dfs_pattern_detector *dpd, struct pulse_event *event)
+dpd_add_pulse(struct dfs_pattern_detector *dpd, struct pulse_event *event,
+	      struct radar_detector_specs *rs)
 {
 	u32 i;
 	struct channel_detector *cd;
@@ -294,6 +295,8 @@ dpd_add_pulse(struct dfs_pattern_detector *dpd, struct pulse_event *event)
 		struct pri_detector *pd = cd->detectors[i];
 		struct pri_sequence *ps = pd->add_pulse(pd, event);
 		if (ps != NULL) {
+			if (rs != NULL)
+				memcpy(rs, pd->rs, sizeof(*rs));
 			ath_dbg(dpd->common, DFS,
 				"DFS: radar found on freq=%d: id=%d, pri=%d, "
 				"count=%d, count_false=%d\n",

drivers/net/wireless/ath/dfs_pattern_detector.h

@@ -97,7 +97,8 @@ struct dfs_pattern_detector {
 	bool (*set_dfs_domain)(struct dfs_pattern_detector *dpd,
 			   enum nl80211_dfs_regions region);
 	bool (*add_pulse)(struct dfs_pattern_detector *dpd,
-			  struct pulse_event *pe);
+			  struct pulse_event *pe,
+			  struct radar_detector_specs *rs);
 
 	struct ath_dfs_pool_stats (*get_stats)(struct dfs_pattern_detector *dpd);
 	enum nl80211_dfs_regions region;

drivers/net/wireless/ath/dfs_pri_detector.h

@@ -62,8 +62,9 @@ struct pri_detector {
 	     (*add_pulse)(struct pri_detector *de, struct pulse_event *e);
 	void (*reset)    (struct pri_detector *de, u64 ts);
 
-/* private: internal use only */
 	const struct radar_detector_specs *rs;
+
+/* private: internal use only */
 	u64 last_ts;
 	struct list_head sequences;
 	struct list_head pulses;