src: add NFTNL_SET_EXPRESSIONS

NFTNL_SET_EXPR defines the stateful expression type that this set stores
in each element. This provides the set definition in terms of stateful
expressions. The expression that is passed via NFNTL_SET_ELEM_EXPR must
equal to this set stateful expression type, otherwise the kernel bails
out.

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

This patch also adds nftnl_set_add_expr() to add new expressions to a set
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, 2 insertions, 0 deletions

diff --git a/src/libnftnl.map b/src/libnftnl.map
index ce1c082..7078a5d 100644
--- a/src/libnftnl.map
+++ b/src/libnftnl.map
@@ -376,6 +376,8 @@ LIBNFTNL_15 {
 } LIBNFTNL_14;
 
 LIBNFTNL_16 {
+  nftnl_set_add_expr;
+  nftnl_set_expr_foreach;
   nftnl_set_elem_add_expr;
   nftnl_set_elem_expr_foreach;
 } LIBNFTNL_15;