[PATCH 4.9 22/32] netfilter: nft_dynset: add timeout extension to template

[Greg Kroah-Hartman]

From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>

commit 0c5b7a501e7400869ee905b4f7af3d6717802bcb upstream.

Otherwise, the newly create element shows no timeout when listing the
ruleset. If the set definition does not specify a default timeout, then
the set element only shows the expiration time, but not the timeout.
This is a problem when restoring a stateful ruleset listing since it
skips the timeout policy entirely.

Fixes: 22fe54d5fefc ("netfilter: nf_tables: add support for dynamic set updates")
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 net/netfilter/nft_dynset.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/net/netfilter/nft_dynset.c
+++ b/net/netfilter/nft_dynset.c
@@ -210,8 +210,10 @@ static int nft_dynset_init(const struct
 		nft_set_ext_add_length(&priv->tmpl, NFT_SET_EXT_EXPR,
 				       priv->expr->ops->size);
 	if (set->flags & NFT_SET_TIMEOUT) {
-		if (timeout || set->timeout)
+		if (timeout || set->timeout) {
+			nft_set_ext_add(&priv->tmpl, NFT_SET_EXT_TIMEOUT);
 			nft_set_ext_add(&priv->tmpl, NFT_SET_EXT_EXPIRATION);
+		}
 	}
 
 	priv->timeout = timeout;