struct wpabuf * wps_get_oob_cred(struct wps_context *wps);
int wps_oob_use_cred(struct wps_context *wps, struct wps_parse_attr *attr);
int wps_attr_text(struct wpabuf *data, char *buf, char *end);
+const char * wps_ei_str(enum wps_error_indication ei);
struct wps_er * wps_er_init(struct wps_context *wps, const char *ifname,
const char *filter);