+/* Generate and apply diffs */
+void ovsdb_datum_diff(struct ovsdb_datum *diff,
+ const struct ovsdb_datum *old,
+ const struct ovsdb_datum *new,
+ const struct ovsdb_type *type);
+
+struct ovsdb_error *ovsdb_datum_apply_diff(struct ovsdb_datum *new,
+ const struct ovsdb_datum *old,
+ const struct ovsdb_datum *diff,
+ const struct ovsdb_type *type)
+OVS_WARN_UNUSED_RESULT;
+