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netfilter: handle NF_REPEAT from nf_conntrack_in()

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NF_REPEAT is only needed from nf_conntrack_in() under a very specific
case required by the TCP protocol tracker, we can handle this case
without returning to the core hook path. Handling of NF_REPEAT from the
nf_reinject() is left untouched.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso
2016-11-03 10:56:43 +01:00
parent 26dfab7216
commit 08733a0cb7
3 changed files with 8 additions and 13 deletions
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8
net/openvswitch/conntrack.c
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@@ -725,12 +725,8 @@ static int __ovs_ct_lookup(struct net *net, struct sw_flow_key *key,
skb->nfctinfo = IP_CT_NEW;
}
/* Repeat if requested, see nf_iterate(). */
do {
err = nf_conntrack_in(net, info->family,
NF_INET_PRE_ROUTING, skb);
} while (err == NF_REPEAT);
err = nf_conntrack_in(net, info->family,
NF_INET_PRE_ROUTING, skb);
if (err != NF_ACCEPT)
return -ENOENT;