qcacmn: Fix multiple radar founds for a single burst

In dfs test mode, 18 pulses are injected in a single burst, the host
driver reports the radar found event two or three times to
upper layer. For a single burst of radar pulses, radar found event
should be reported only once.

Fix the multiple radar founds for a single burst by disabling radar
detection and flushing the existing radar pulses from all queues
while processing the current radar found indication event in dfs test
mode (usenol=0).

Change-Id: I70c7c15147a5cde038773fd97735c113ca385932
CRs-Fixed: 2981217

umac/dfs/core/src/misc/dfs_process_radar_found_ind.c

@@ -1022,6 +1022,11 @@ dfs_process_radar_ind_on_home_chan(struct wlan_dfs *dfs,
 				WLAN_EV_RADAR_DETECTED);
 
 	if (!dfs->dfs_use_nol) {
+		if (!dfs->dfs_is_offload_enabled) {
+			dfs_radar_disable(dfs);
+			dfs_second_segment_radar_disable(dfs);
+			dfs_flush_additional_pulses(dfs);
+		}
 		dfs_reset_bangradar(dfs);
 		dfs_send_csa_to_current_chan(dfs);
 		status = QDF_STATUS_SUCCESS;

umac/dfs/dispatcher/inc/wlan_dfs_utils_api.h

@@ -968,4 +968,15 @@ QDF_STATUS dfs_init_chan_state_array(struct wlan_objmgr_pdev *pdev)
 	return QDF_STATUS_E_NOSUPPORT;
 }
 #endif /* WLAN_DISP_CHAN_INFO */
+
+/**
+ * utils_dfs_radar_enable() - Enables the radar.
+ * @pdev: Pointer to DFS pdev object.
+ *
+ * This is called each time for eCSA occurs but don't change channel due
+ * to channel switch disabled in dfs test mode.
+ *
+ * Return: QDF_STATUS.
+ */
+QDF_STATUS utils_dfs_radar_enable(struct wlan_objmgr_pdev *pdev);
 #endif /* _WLAN_DFS_UTILS_API_H_ */

umac/dfs/dispatcher/src/wlan_dfs_utils_api.c

@@ -1583,3 +1583,8 @@ QDF_STATUS utils_dfs_update_chan_state_array(struct wlan_objmgr_pdev *pdev,
 	return utils_dfs_update_chan_state_array_element(dfs, freq, state);
 }
 #endif /* WLAN_DISP_CHAN_INFO */
+
+QDF_STATUS utils_dfs_radar_enable(struct wlan_objmgr_pdev *pdev)
+{
+	return tgt_dfs_radar_enable(pdev, 0, 0, true);
+}

umac/mlme/vdev_mgr/core/src/vdev_mlme_sm.c

@@ -1358,7 +1358,7 @@ static bool mlme_vdev_subst_suspend_csa_restart_event(void *ctx,
 	 * change in channel i.e. only Beacon Probe response template
 	 * is updated (CSA / ECSA IE is removed).
 	 */
-
+		mlme_vdev_chan_switch_disable_notify_dfs(vdev_mlme);
 		mlme_vdev_sm_transition_to(vdev_mlme, WLAN_VDEV_S_UP);
 		mlme_vdev_sm_deliver_event(vdev_mlme,
 					   WLAN_VDEV_SM_EV_UP_HOST_RESTART,

umac/mlme/vdev_mgr/core/src/vdev_mlme_sm.h

@@ -24,6 +24,8 @@
 #define _VDEV_MLME_SM_H_
 
 #include <wlan_mlo_mgr_ap.h>
+#include <wlan_dfs_utils_api.h>
+
 /**
  * mlme_vdev_sm_deliver_event() - Delivers event to VDEV MLME SM
  * @vdev_mlme: MLME VDEV comp object
@@ -623,6 +625,18 @@ static inline QDF_STATUS mlme_vdev_dfs_cac_wait_notify(
 	return ret;
 }
 
+/**
+ * mlme_vdev_chan_switch_disable_notify_dfs - Notifies DFS when channel
+ * switch is disabled
+ * @vdev_mlme: VDEV MLME comp object
+ *
+ * Return: QDF_STATUS.
+ */
+static inline QDF_STATUS mlme_vdev_chan_switch_disable_notify_dfs(
+					struct vdev_mlme_obj *vdev_mlme)
+{
+	return utils_dfs_radar_enable(wlan_vdev_get_pdev(vdev_mlme->vdev));
+}
 #ifdef WLAN_FEATURE_11BE_MLO
 /**
  * mlme_vdev_up_notify_mlo_mgr - notify mlo link is ready to up