qcacld-3.0: Select dfs channel sap to handle radar event

If radar event is indicated in station vdev, it may be dropped by
station vdev since station does not support DFS master.

Select first sap vdev started in dfs channel to handle radar event.

Change-Id: I74229eb02c6ae6d81042df6b736d231db26253b5
CRs-Fixed: 2512836

components/cmn_services/policy_mgr/inc/wlan_policy_mgr_api.h

@@ -665,6 +665,18 @@ uint8_t policy_mgr_get_nondfs_preferred_channel(struct wlan_objmgr_psoc *psoc,
 bool policy_mgr_is_any_nondfs_chnl_present(struct wlan_objmgr_psoc *psoc,
 		uint8_t *channel);
 
+/**
+ * policy_mgr_get_dfs_beaconing_session_id() - to find the
+ * first DFS session id
+ * @psoc: PSOC object information
+ *
+ * Return: If any beaconing session such as SAP or GO present and it is on
+ * DFS channel then this function will return its session id
+ *
+ */
+uint32_t policy_mgr_get_dfs_beaconing_session_id(
+		struct wlan_objmgr_psoc *psoc);
+
 /**
  * policy_mgr_is_any_dfs_beaconing_session_present() - to find
  * if any DFS session

components/cmn_services/policy_mgr/src/wlan_policy_mgr_get_set_utils.c

@@ -2948,6 +2948,38 @@ bool policy_mgr_is_any_nondfs_chnl_present(struct wlan_objmgr_psoc *psoc,
 	return status;
 }
 
+uint32_t policy_mgr_get_dfs_beaconing_session_id(
+		struct wlan_objmgr_psoc *psoc)
+{
+	uint32_t session_id = WLAN_UMAC_VDEV_ID_MAX;
+	struct policy_mgr_conc_connection_info *conn_info;
+	uint32_t conn_index = 0;
+	struct policy_mgr_psoc_priv_obj *pm_ctx;
+
+	pm_ctx = policy_mgr_get_context(psoc);
+	if (!pm_ctx) {
+		policy_mgr_err("Invalid Context");
+		return session_id;
+	}
+	qdf_mutex_acquire(&pm_ctx->qdf_conc_list_lock);
+	for (conn_index = 0; conn_index < MAX_NUMBER_OF_CONC_CONNECTIONS;
+	     conn_index++) {
+		conn_info = &pm_conc_connection_list[conn_index];
+		if (conn_info->in_use &&
+		    wlan_reg_chan_has_dfs_attribute(pm_ctx->pdev,
+						    conn_info->chan) &&
+		    (conn_info->mode == PM_SAP_MODE ||
+		    conn_info->mode == PM_P2P_GO_MODE)) {
+			session_id =
+				pm_conc_connection_list[conn_index].vdev_id;
+			break;
+		}
+	}
+	qdf_mutex_release(&pm_ctx->qdf_conc_list_lock);
+
+	return session_id;
+}
+
 bool policy_mgr_is_any_dfs_beaconing_session_present(
 		struct wlan_objmgr_psoc *psoc, uint8_t *channel)
 {

core/sme/src/common/sme_api.c

@@ -1241,7 +1241,12 @@ static QDF_STATUS dfs_msg_processor(struct mac_context *mac,
 	switch (msg->type) {
 	case eWNI_SME_DFS_RADAR_FOUND:
 	{
-		session_id = msg->bodyval;
+		session_id = policy_mgr_get_dfs_beaconing_session_id(mac->psoc);
+		if (!CSR_IS_SESSION_VALID(mac, session_id)) {
+			sme_err("CSR session not valid: %d", session_id);
+			qdf_mem_free(roam_info);
+			return QDF_STATUS_E_FAILURE;
+		}
 		roam_status = eCSR_ROAM_DFS_RADAR_IND;
 		roam_result = eCSR_ROAM_RESULT_DFS_RADAR_FOUND_IND;
 		QDF_TRACE(QDF_MODULE_ID_SME, QDF_TRACE_LEVEL_DEBUG,