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netfilter: only warn once on wrong seqadj usage

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Avoid potentially spamming the kernel log with WARN splash messages
when catching wrong usage of seqadj, by simply using WARN_ONCE.

This is a followup to commit db12cf2743 (netfilter: WARN about
wrong usage of sequence number adjustments)

Suggested-by: Flavio Leitner <fbl@redhat.com>
Suggested-by: Daniel Borkmann <dborkman@redhat.com>
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Jesper Dangaard Brouer 2014-01-04 14:10:43 +01:00 committed by Pablo Neira Ayuso
parent 2690d97ade
commit f2661adc0c
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/nf_conntrack_seqadj.c
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@ -37,7 +37,7 @@ int nf_ct_seqadj_set(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
return 0;
if (unlikely(!seqadj)) {
WARN(1, "Wrong seqadj usage, missing nfct_seqadj_ext_add()\n");
WARN_ONCE(1, "Missing nfct_seqadj_ext_add() setup call\n");
return 0;
}