src: add nft_*_list_is_empty() functions

This functions check if a given nft_*_list is empty or not.

I found this quite useful while working with a full ruleset.

Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/rule.c b/src/rule.c
index 5a4ae91..aa7aee8 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -867,6 +867,12 @@ void nft_rule_list_free(struct nft_rule_list *list)
 }
 EXPORT_SYMBOL(nft_rule_list_free);
 
+int nft_rule_list_is_empty(struct nft_rule_list *list)
+{
+	return list_empty(&list->list);
+}
+EXPORT_SYMBOL(nft_rule_list_is_empty);
+
 void nft_rule_list_add(struct nft_rule *r, struct nft_rule_list *list)
 {
 	list_add_tail(&r->head, &list->list);