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Date: Sun, 22 Jun 2008 05:01:11 +0400
From: Alexey Dobriyan <adobriyan@...il.com>
To: kaber@...sh.net
Cc: netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
den@...nvz.org, xemul@...nvz.org, ebiederm@...ssion.com,
benjamin.thery@...l.net, dlezcano@...ibm.com
Subject: [PATCH 03/25] netns ct: boring netns boilerplate
Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---
include/net/net_namespace.h | 4 ++++
include/net/netfilter/nf_conntrack_core.h | 4 ++--
include/net/netns/conntrack.h | 6 ++++++
net/netfilter/nf_conntrack_core.c | 9 +++++++--
net/netfilter/nf_conntrack_expect.c | 4 ++--
net/netfilter/nf_conntrack_standalone.c | 21 ++++++++++++++++++---
6 files changed, 39 insertions(+), 9 deletions(-)
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -15,6 +15,7 @@
#include <net/netns/ipv6.h>
#include <net/netns/dccp.h>
#include <net/netns/x_tables.h>
+#include <net/netns/conntrack.h>
struct proc_dir_entry;
struct net_device;
@@ -63,6 +64,9 @@ struct net {
#endif
#ifdef CONFIG_NETFILTER
struct netns_xt xt;
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ struct netns_ct ct;
+#endif
#endif
struct net_generic *gen;
};
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -24,8 +24,8 @@ extern unsigned int nf_conntrack_in(int pf,
unsigned int hooknum,
struct sk_buff *skb);
-extern int nf_conntrack_init(void);
-extern void nf_conntrack_cleanup(void);
+extern int nf_conntrack_init(struct net *net);
+extern void nf_conntrack_cleanup(struct net *net);
extern int nf_conntrack_proto_init(void);
extern void nf_conntrack_proto_fini(void);
new file mode 100644
--- /dev/null
+++ b/include/net/netns/conntrack.h
@@ -0,0 +1,6 @@
+#ifndef __NETNS_CONNTRACK_H
+#define __NETNS_CONNTRACK_H
+
+struct netns_ct {
+};
+#endif
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -996,8 +996,10 @@ EXPORT_SYMBOL_GPL(nf_conntrack_flush);
/* Mishearing the voices in his head, our hero wonders how he's
supposed to kill the mall. */
-void nf_conntrack_cleanup(void)
+void nf_conntrack_cleanup(struct net *net)
{
+ if (net != &init_net)
+ return;
rcu_assign_pointer(ip_ct_attach, NULL);
/* This makes sure all current packets have passed through
@@ -1109,11 +1111,14 @@ EXPORT_SYMBOL_GPL(nf_conntrack_set_hashsize);
module_param_call(hashsize, nf_conntrack_set_hashsize, param_get_uint,
&nf_conntrack_htable_size, 0600);
-int __init nf_conntrack_init(void)
+int nf_conntrack_init(struct net *net)
{
int max_factor = 8;
int ret;
+ if (net != &init_net)
+ return 0;
+
/* Idea from tcp.c: use 1/16384 of memory. On i386: 32MB
* machine has 512 buckets. >= 1GB machines have 16384 buckets. */
if (!nf_conntrack_htable_size) {
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -537,7 +537,7 @@ static const struct file_operations exp_file_ops = {
};
#endif /* CONFIG_PROC_FS */
-static int __init exp_proc_init(void)
+static int exp_proc_init(void)
{
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc;
@@ -558,7 +558,7 @@ static void exp_proc_remove(void)
module_param_named(expect_hashsize, nf_ct_expect_hsize, uint, 0600);
-int __init nf_conntrack_expect_init(void)
+int nf_conntrack_expect_init(void)
{
int err = -ENOMEM;
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -446,11 +446,26 @@ static void nf_conntrack_standalone_fini_sysctl(void)
}
#endif /* CONFIG_SYSCTL */
+static int nf_conntrack_net_init(struct net *net)
+{
+ return nf_conntrack_init(net);
+}
+
+static void nf_conntrack_net_exit(struct net *net)
+{
+ nf_conntrack_cleanup(net);
+}
+
+static struct pernet_operations nf_conntrack_net_ops = {
+ .init = nf_conntrack_net_init,
+ .exit = nf_conntrack_net_exit,
+};
+
static int __init nf_conntrack_standalone_init(void)
{
int ret;
- ret = nf_conntrack_init();
+ ret = register_pernet_subsys(&nf_conntrack_net_ops);
if (ret < 0)
goto out;
ret = nf_conntrack_standalone_init_proc();
@@ -464,7 +479,7 @@ static int __init nf_conntrack_standalone_init(void)
out_sysctl:
nf_conntrack_standalone_fini_proc();
out_proc:
- nf_conntrack_cleanup();
+ unregister_pernet_subsys(&nf_conntrack_net_ops);
out:
return ret;
}
@@ -473,7 +488,7 @@ static void __exit nf_conntrack_standalone_fini(void)
{
nf_conntrack_standalone_fini_sysctl();
nf_conntrack_standalone_fini_proc();
- nf_conntrack_cleanup();
+ unregister_pernet_subsys(&nf_conntrack_net_ops);
}
module_init(nf_conntrack_standalone_init);
--
1.5.4.5
--
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