/* Flow formats. */
bool ofputil_flow_format_is_valid(enum nx_flow_format);
const char *ofputil_flow_format_to_string(enum nx_flow_format);
+int ofputil_flow_format_from_string(const char *);
+enum nx_flow_format ofputil_min_flow_format(const struct cls_rule *,
+ bool cookie_support,
+ ovs_be64 cookie);
+
+struct ofpbuf *ofputil_make_set_flow_format(enum nx_flow_format);
/* Flow format independent flow_mod. */
struct flow_mod {