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netfilter: nf_conntrack: fix nf_conntrack_l3proto_register

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Before commit 2c352f444c
(netfilter: nf_conntrack: prepare namespace support for
l4 protocol trackers), we register sysctl before register
protocol tracker. Thus, if sysctl is registration fails,
the protocol tracker will not be registered.

After that commit, if sysctl registration fails, protocol
registration still remains, so we leave things in intermediate
state.

To fix this, this patch registers sysctl before protocols.
And if protocol registration fail, sysctl is unregistered.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Gao feng 2012-06-21 04:36:38 +00:00 committed by Pablo Neira Ayuso
parent 392025f87a
commit fa0f61f05e
1 changed files with 24 additions and 14 deletions
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38
net/netfilter/nf_conntrack_proto.c
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@ -253,18 +253,23 @@ int nf_conntrack_l3proto_register(struct net *net,
{
int ret = 0;
if (net == &init_net)
ret = nf_conntrack_l3proto_register_net(proto);
if (ret < 0)
return ret;
if (proto->init_net) {
ret = proto->init_net(net);
if (ret < 0)
return ret;
}
return nf_ct_l3proto_register_sysctl(net, proto);
ret = nf_ct_l3proto_register_sysctl(net, proto);
if (ret < 0)
return ret;
if (net == &init_net) {
ret = nf_conntrack_l3proto_register_net(proto);
if (ret < 0)
nf_ct_l3proto_unregister_sysctl(net, proto);
}
return ret;
}
EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_register);
@ -454,19 +459,24 @@ int nf_conntrack_l4proto_register(struct net *net,
struct nf_conntrack_l4proto *l4proto)
{
int ret = 0;
if (net == &init_net)
ret = nf_conntrack_l4proto_register_net(l4proto);
if (ret < 0)
return ret;
if (l4proto->init_net)
if (l4proto->init_net) {
ret = l4proto->init_net(net);
if (ret < 0)
return ret;
}
ret = nf_ct_l4proto_register_sysctl(net, l4proto);
if (ret < 0)
return ret;
return nf_ct_l4proto_register_sysctl(net, l4proto);
if (net == &init_net) {
ret = nf_conntrack_l4proto_register_net(l4proto);
if (ret < 0)
nf_ct_l4proto_unregister_sysctl(net, l4proto);
}
return ret;
}
EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_register);