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/chain.c b/src/chain.c
index bdbaf60..3555829 100644
--- a/src/chain.c
+++ b/src/chain.c
@@ -862,6 +862,12 @@ void nft_chain_list_free(struct nft_chain_list *list)
 }
 EXPORT_SYMBOL(nft_chain_list_free);
 
+int nft_chain_list_is_empty(struct nft_chain_list *list)
+{
+	return list_empty(&list->list);
+}
+EXPORT_SYMBOL(nft_chain_list_is_empty);
+
 void nft_chain_list_add(struct nft_chain *r, struct nft_chain_list *list)
 {
 	list_add_tail(&r->head, &list->list);