src: add support to add flowtables

This patch allows you to create flowtable:

 # nft add table x
 # nft add flowtable x m { hook ingress priority 10\; devices = { eth0, wlan0 }\; }

You have to specify hook and priority. So far, only the ingress hook is
supported. The priority represents where this flowtable is placed in the
ingress hook, which is registered to the devices that the user
specifies.

You can also use the 'create' command instead to bail out in case that
there is an existing flowtable with this name.

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

1 files changed, 2 insertions, 2 deletions

diff --git a/src/expression.c b/src/expression.c
index ee75284e..d7f54ad7 100644
--- a/src/expression.c
+++ b/src/expression.c
@@ -702,8 +702,8 @@ struct expr *range_expr_alloc(const struct location *loc,
 	return expr;
 }
 
-static struct expr *compound_expr_alloc(const struct location *loc,
-					const struct expr_ops *ops)
+struct expr *compound_expr_alloc(const struct location *loc,
+				 const struct expr_ops *ops)
 {
 	struct expr *expr;