netfilter: nft_quota: copy content when cloning expression
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: ed0a0c60f0
("netfilter: nft_quota: move stateful fields out of expression data")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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@ -236,12 +236,16 @@ static void nft_quota_destroy(const struct nft_ctx *ctx,
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static int nft_quota_clone(struct nft_expr *dst, const struct nft_expr *src)
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{
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struct nft_quota *priv_dst = nft_expr_priv(dst);
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struct nft_quota *priv_src = nft_expr_priv(src);
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priv_dst->quota = priv_src->quota;
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priv_dst->flags = priv_src->flags;
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priv_dst->consumed = kmalloc(sizeof(*priv_dst->consumed), GFP_ATOMIC);
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if (!priv_dst->consumed)
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return -ENOMEM;
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atomic64_set(priv_dst->consumed, 0);
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*priv_dst->consumed = *priv_src->consumed;
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return 0;
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}
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