src: add NFTNL_SET_ELEM_EXPRESSIONS

NFTNL_SET_ELEM_EXPR defines the stateful expression type that this
element stores. This is useful to restore runtime set element stateful
expressions (when saving, then reboot and restore).

This patch adds support for the set element expression list, which
generalizes NFTNL_SET_ELEM_EXPR.

This patch also adds nftnl_set_elem_add_expr() to add new expressions to
set elements and nftnl_set_elem_expr_foreach() to iterate over the list
of expressions.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/include/set_elem.h b/include/set_elem.h
index 52f185a..9239557 100644
--- a/include/set_elem.h
+++ b/include/set_elem.h
@@ -10,7 +10,7 @@ struct nftnl_set_elem {
 	union nftnl_data_reg	key;
 	union nftnl_data_reg	key_end;
 	union nftnl_data_reg	data;
-	struct nftnl_expr	*expr;
+	struct list_head	expr_list;
 	uint64_t		timeout;
 	uint64_t		expiration;
 	const char		*objref;