Thread (5 messages) flat view 5 messages, 2 authors, 2023-03-02
STALE1250d

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[PATCH net 3/3] netfilter: nft_quota: copy content when cloning expression

From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: 2023-03-01 22:20:37
Also in: netfilter-devel
Subsystem: netfilter, networking [general], the rest · Maintainers: Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds 

If the ruleset contains consumed quota, restore them accordingly.
Otherwise, listing after restoration shows never used items.

Restore the user-defined quota and flags too.

Fixes: ed0a0c60f0e5 ("netfilter: nft_quota: move stateful fields out of expression data")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/nft_quota.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/net/netfilter/nft_quota.c b/net/netfilter/nft_quota.c
index 123578e28917..3ba12a7471b0 100644
--- a/net/netfilter/nft_quota.c
+++ b/net/netfilter/nft_quota.c
@@ -236,12 +236,16 @@ static void nft_quota_destroy(const struct nft_ctx *ctx,
 static int nft_quota_clone(struct nft_expr *dst, const struct nft_expr *src)
 {
 	struct nft_quota *priv_dst = nft_expr_priv(dst);
+	struct nft_quota *priv_src = nft_expr_priv(src);
+
+	priv_dst->quota = priv_src->quota;
+	priv_dst->flags = priv_src->flags;
 
 	priv_dst->consumed = kmalloc(sizeof(*priv_dst->consumed), GFP_ATOMIC);
 	if (!priv_dst->consumed)
 		return -ENOMEM;
 
-	atomic64_set(priv_dst->consumed, 0);
+	*priv_dst->consumed = *priv_src->consumed;
 
 	return 0;
 }
-- 
2.30.2
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