Report if the option is supported by a newer kernel release

Instead ot printing "Unknown argument: foo", if foo option is
supported by a newer kernel release, report that.

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/types.c b/lib/types.c
index f303ea6..0fe8a7c 100644
--- a/lib/types.c
+++ b/lib/types.c
@@ -416,6 +416,30 @@ ipset_type_get(struct ipset_session *session, enum ipset_cmd cmd)
 }
 
 /**
+ * ipset_type_higher_rev - find the next higher userspace revision
+ * @type: set type
+ *
+ * Find the next higher revision of the set type for the input
+ * set type. Higher revision numbers come first on typelist.
+ *
+ * Returns the found or original set type, cannot fail.
+ */
+const struct ipset_type *
+ipset_type_higher_rev(const struct ipset_type *type)
+{
+	const struct ipset_type *t;
+
+	/* Check all registered types in userspace */
+	for (t = typelist; t != NULL; t = t->next) {
+		if (STREQ(type->name, t->name)
+		    && type->family == t->family
+		    && type == t->next)
+			return t;
+	}
+	return type;
+}
+
+/**
  * ipset_type_check - check the set type received from kernel
  * @session: session structure
  *