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netfilter: nf_ct_dccp: use new namespace support 

This patch modifies the DCCP protocol tracker to use the new
namespace infrastructure for nf_conntrack.

Acked-by: Eric W. Biederman <ebiederm@xmission.com>
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 2012-05-28 21:04:20 +00:00 committed by Pablo Neira Ayuso
parent a8021fedda
commit 84c394511f
1 changed files with 66 additions and 66 deletions
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132
net/netfilter/nf_conntrack_proto_dccp.c
View File

@ -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);