netfilter: conntrack: increase drop stats if sequence adjustment fails
This patch increases the statistics of packets drop if the sequence adjustment fails in ipv4_confirm(). Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net>
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@ -120,9 +120,11 @@ static unsigned int ipv4_confirm(unsigned int hooknum,
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typeof(nf_nat_seq_adjust_hook) seq_adjust;
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seq_adjust = rcu_dereference(nf_nat_seq_adjust_hook);
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if (!seq_adjust || !seq_adjust(skb, ct, ctinfo))
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if (!seq_adjust || !seq_adjust(skb, ct, ctinfo)) {
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NF_CT_STAT_INC_ATOMIC(nf_ct_net(ct), drop);
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return NF_DROP;
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}
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}
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out:
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/* We've seen it coming out the other side: confirm it */
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return nf_conntrack_confirm(skb);
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