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netfilter: conntrack: don't increment invalid counter on NF_REPEAT
[ Upstream commit830af2eba4
] The packet isn't invalid, REPEAT means we're trying again after cleaning out a stale connection, e.g. via tcp tracker. This caused increases of invalid stat counter in a test case involving frequent connection reuse, even though no packet is actually invalid. Fixes:56a62e2218
("netfilter: conntrack: fix NF_REPEAT handling") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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abcb9d80a4
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1 changed files with 5 additions and 3 deletions
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@ -1709,15 +1709,17 @@ nf_conntrack_in(struct sk_buff *skb, const struct nf_hook_state *state)
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pr_debug("nf_conntrack_in: Can't track with proto module\n");
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nf_conntrack_put(&ct->ct_general);
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skb->_nfct = 0;
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NF_CT_STAT_INC_ATOMIC(state->net, invalid);
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if (ret == -NF_DROP)
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NF_CT_STAT_INC_ATOMIC(state->net, drop);
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/* Special case: TCP tracker reports an attempt to reopen a
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* closed/aborted connection. We have to go back and create a
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* fresh conntrack.
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*/
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if (ret == -NF_REPEAT)
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goto repeat;
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NF_CT_STAT_INC_ATOMIC(state->net, invalid);
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if (ret == -NF_DROP)
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NF_CT_STAT_INC_ATOMIC(state->net, drop);
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ret = -ret;
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goto out;
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}
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