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Message-Id: <1339425841-24171-16-git-send-email-pablo@netfilter.org>
Date: Mon, 11 Jun 2012 16:43:51 +0200
From: pablo@...filter.org
To: netfilter-devel@...r.kernel.org
Cc: davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 15/25] netfilter: nf_ct_dccp: use new namespace support
From: Gao feng <gaofeng@...fujitsu.com>
This patch modifies the DCCP protocol tracker to use the new
namespace infrastructure for nf_conntrack.
Acked-by: Eric W. Biederman <ebiederm@...ssion.com>
Signed-off-by: Gao feng <gaofeng@...fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
net/netfilter/nf_conntrack_proto_dccp.c | 132 +++++++++++++++----------------
1 file changed, 66 insertions(+), 66 deletions(-)
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
index 5a8e037..8d798a6 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -387,12 +387,9 @@ dccp_state_table[CT_DCCP_ROLE_MAX + 1][DCCP_PKT_SYNCACK + 1][CT_DCCP_MAX + 1] =
/* this module per-net specifics */
static int dccp_net_id __read_mostly;
struct dccp_net {
+ struct nf_proto_net np;
int dccp_loose;
unsigned int dccp_timeout[CT_DCCP_MAX + 1];
-#ifdef CONFIG_SYSCTL
- struct ctl_table_header *sysctl_header;
- struct ctl_table *sysctl_table;
-#endif
};
static inline struct dccp_net *dccp_pernet(struct net *net)
@@ -817,6 +814,45 @@ static struct ctl_table dccp_sysctl_table[] = {
};
#endif /* CONFIG_SYSCTL */
+static int dccp_init_net(struct net *net)
+{
+ struct dccp_net *dn = dccp_pernet(net);
+ struct nf_proto_net *pn = (struct nf_proto_net *)dn;
+
+#ifdef CONFIG_SYSCTL
+ if (!pn->ctl_table) {
+#else
+ if (!pn->users++) {
+#endif
+ /* default values */
+ dn->dccp_loose = 1;
+ dn->dccp_timeout[CT_DCCP_REQUEST] = 2 * DCCP_MSL;
+ dn->dccp_timeout[CT_DCCP_RESPOND] = 4 * DCCP_MSL;
+ dn->dccp_timeout[CT_DCCP_PARTOPEN] = 4 * DCCP_MSL;
+ dn->dccp_timeout[CT_DCCP_OPEN] = 12 * 3600 * HZ;
+ dn->dccp_timeout[CT_DCCP_CLOSEREQ] = 64 * HZ;
+ dn->dccp_timeout[CT_DCCP_CLOSING] = 64 * HZ;
+ dn->dccp_timeout[CT_DCCP_TIMEWAIT] = 2 * DCCP_MSL;
+#ifdef CONFIG_SYSCTL
+ pn->ctl_table = kmemdup(dccp_sysctl_table,
+ sizeof(dccp_sysctl_table),
+ GFP_KERNEL);
+ if (!pn->ctl_table)
+ return -ENOMEM;
+
+ pn->ctl_table[0].data = &dn->dccp_timeout[CT_DCCP_REQUEST];
+ pn->ctl_table[1].data = &dn->dccp_timeout[CT_DCCP_RESPOND];
+ pn->ctl_table[2].data = &dn->dccp_timeout[CT_DCCP_PARTOPEN];
+ pn->ctl_table[3].data = &dn->dccp_timeout[CT_DCCP_OPEN];
+ pn->ctl_table[4].data = &dn->dccp_timeout[CT_DCCP_CLOSEREQ];
+ pn->ctl_table[5].data = &dn->dccp_timeout[CT_DCCP_CLOSING];
+ pn->ctl_table[6].data = &dn->dccp_timeout[CT_DCCP_TIMEWAIT];
+ pn->ctl_table[7].data = &dn->dccp_loose;
+#endif
+ }
+ return 0;
+}
+
static struct nf_conntrack_l4proto dccp_proto4 __read_mostly = {
.l3proto = AF_INET,
.l4proto = IPPROTO_DCCP,
@@ -847,6 +883,8 @@ static struct nf_conntrack_l4proto dccp_proto4 __read_mostly = {
.nla_policy = dccp_timeout_nla_policy,
},
#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */
+ .net_id = &dccp_net_id,
+ .init_net = dccp_init_net,
};
static struct nf_conntrack_l4proto dccp_proto6 __read_mostly = {
@@ -879,55 +917,39 @@ static struct nf_conntrack_l4proto dccp_proto6 __read_mostly = {
.nla_policy = dccp_timeout_nla_policy,
},
#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */
+ .net_id = &dccp_net_id,
+ .init_net = dccp_init_net,
};
static __net_init int dccp_net_init(struct net *net)
{
- struct dccp_net *dn = dccp_pernet(net);
-
- /* default values */
- dn->dccp_loose = 1;
- dn->dccp_timeout[CT_DCCP_REQUEST] = 2 * DCCP_MSL;
- dn->dccp_timeout[CT_DCCP_RESPOND] = 4 * DCCP_MSL;
- dn->dccp_timeout[CT_DCCP_PARTOPEN] = 4 * DCCP_MSL;
- dn->dccp_timeout[CT_DCCP_OPEN] = 12 * 3600 * HZ;
- dn->dccp_timeout[CT_DCCP_CLOSEREQ] = 64 * HZ;
- dn->dccp_timeout[CT_DCCP_CLOSING] = 64 * HZ;
- dn->dccp_timeout[CT_DCCP_TIMEWAIT] = 2 * DCCP_MSL;
-
-#ifdef CONFIG_SYSCTL
- dn->sysctl_table = kmemdup(dccp_sysctl_table,
- sizeof(dccp_sysctl_table), GFP_KERNEL);
- if (!dn->sysctl_table)
- return -ENOMEM;
-
- dn->sysctl_table[0].data = &dn->dccp_timeout[CT_DCCP_REQUEST];
- dn->sysctl_table[1].data = &dn->dccp_timeout[CT_DCCP_RESPOND];
- dn->sysctl_table[2].data = &dn->dccp_timeout[CT_DCCP_PARTOPEN];
- dn->sysctl_table[3].data = &dn->dccp_timeout[CT_DCCP_OPEN];
- dn->sysctl_table[4].data = &dn->dccp_timeout[CT_DCCP_CLOSEREQ];
- dn->sysctl_table[5].data = &dn->dccp_timeout[CT_DCCP_CLOSING];
- dn->sysctl_table[6].data = &dn->dccp_timeout[CT_DCCP_TIMEWAIT];
- dn->sysctl_table[7].data = &dn->dccp_loose;
-
- dn->sysctl_header = register_net_sysctl(net, "net/netfilter",
- dn->sysctl_table);
- if (!dn->sysctl_header) {
- kfree(dn->sysctl_table);
- return -ENOMEM;
+ int ret = 0;
+ ret = nf_conntrack_l4proto_register(net,
+ &dccp_proto4);
+ if (ret < 0) {
+ pr_err("nf_conntrack_l4proto_dccp4 :protocol register failed.\n");
+ goto out;
+ }
+ ret = nf_conntrack_l4proto_register(net,
+ &dccp_proto6);
+ if (ret < 0) {
+ pr_err("nf_conntrack_l4proto_dccp6 :protocol register failed.\n");
+ goto cleanup_dccp4;
}
-#endif
-
return 0;
+cleanup_dccp4:
+ nf_conntrack_l4proto_unregister(net,
+ &dccp_proto4);
+out:
+ return ret;
}
static __net_exit void dccp_net_exit(struct net *net)
{
- struct dccp_net *dn = dccp_pernet(net);
-#ifdef CONFIG_SYSCTL
- unregister_net_sysctl_table(dn->sysctl_header);
- kfree(dn->sysctl_table);
-#endif
+ nf_conntrack_l4proto_unregister(net,
+ &dccp_proto6);
+ nf_conntrack_l4proto_unregister(net,
+ &dccp_proto4);
}
static struct pernet_operations dccp_net_ops = {
@@ -939,34 +961,12 @@ static struct pernet_operations dccp_net_ops = {
static int __init nf_conntrack_proto_dccp_init(void)
{
- int err;
-
- err = register_pernet_subsys(&dccp_net_ops);
- if (err < 0)
- goto err1;
-
- err = nf_conntrack_l4proto_register(&init_net, &dccp_proto4);
- if (err < 0)
- goto err2;
-
- err = nf_conntrack_l4proto_register(&init_net, &dccp_proto6);
- if (err < 0)
- goto err3;
- return 0;
-
-err3:
- nf_conntrack_l4proto_unregister(&init_net, &dccp_proto4);
-err2:
- unregister_pernet_subsys(&dccp_net_ops);
-err1:
- return err;
+ return register_pernet_subsys(&dccp_net_ops);
}
static void __exit nf_conntrack_proto_dccp_fini(void)
{
unregister_pernet_subsys(&dccp_net_ops);
- nf_conntrack_l4proto_unregister(&init_net, &dccp_proto6);
- nf_conntrack_l4proto_unregister(&init_net, &dccp_proto4);
}
module_init(nf_conntrack_proto_dccp_init);
--
1.7.10
--
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