netdev - [PATCH net 2/3] netfilter: nft_dynset: add timeout extension to template

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Message-Id: <20210127132512.5472-3-pablo@netfilter.org>
Date:   Wed, 27 Jan 2021 14:25:11 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     netfilter-devel@...r.kernel.org
Cc:     davem@...emloft.net, netdev@...r.kernel.org, kuba@...nel.org
Subject: [PATCH net 2/3] netfilter: nft_dynset: add timeout extension to template

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

diff --git a/net/netfilter/nft_dynset.c b/net/netfilter/nft_dynset.c
index 86204740f6c7..218c09e4fddd 100644
--- a/net/netfilter/nft_dynset.c
+++ b/net/netfilter/nft_dynset.c
@@ -312,8 +312,10 @@ static int nft_dynset_init(const struct nft_ctx *ctx,
 		nft_dynset_ext_add_expr(priv);
 
 	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;
-- 
2.20.1