xtables: add chain cache

So we don't have to dump the chain cache content over and over again.
Moreover, perform incremental updates on the chain cache to add and to
delete non-base chains.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/iptables/xtables-save.c b/iptables/xtables-save.c
index be98b835..8bcc31fd 100644
--- a/iptables/xtables-save.c
+++ b/iptables/xtables-save.c
@@ -57,7 +57,7 @@ do_output(struct nft_handle *h, const char *tablename, bool counters)
 		return 0;
 	}
 
-	chain_list = nft_chain_dump(h, tablename);
+	chain_list = nft_chain_dump(h);
 
 	time_t now = time(NULL);