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, 5 insertions, 0 deletions

diff --git a/src/libnftnl.map b/src/libnftnl.map
index 2d35ace..ce1c082 100644
--- a/src/libnftnl.map
+++ b/src/libnftnl.map
@@ -374,3 +374,8 @@ LIBNFTNL_15 {
   nftnl_expr_build_payload;
   nftnl_rule_del_expr;
 } LIBNFTNL_14;
+
+LIBNFTNL_16 {
+  nftnl_set_elem_add_expr;
+  nftnl_set_elem_expr_foreach;
+} LIBNFTNL_15;