+void hs20_start_osu_scan(struct wpa_supplicant *wpa_s);
+void hs20_init(struct wpa_supplicant *wpa_s);
+void hs20_deinit(struct wpa_supplicant *wpa_s);
+int hs20_get_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
+ const char *file_name, size_t offset, size_t size,
+ char *reply, size_t buf_len);
+int hs20_del_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
+ const char *file_name);