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Message-Id: <1358504190-6094-9-git-send-email-gaofeng@cn.fujitsu.com>
Date: Fri, 18 Jan 2013 18:16:29 +0800
From: Gao feng <gaofeng@...fujitsu.com>
To: pablo@...filter.org
Cc: netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
kaber@...sh.net, ebiederm@...ssion.com, canqunzhang@...il.com,
Gao feng <gaofeng@...fujitsu.com>
Subject: [PATCH RESEND 09/10] netfilter: l3proto: refactor l3proto support for netns
move the code that register/unregister l3proto
to the module_init/exit context.
Signed-off-by: Gao feng <gaofeng@...fujitsu.com>
---
include/net/netfilter/nf_conntrack_l3proto.h | 19 +++++++++----
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 22 ++++++++++-----
net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c | 26 ++++++++++++------
net/netfilter/nf_conntrack_proto.c | 37 +++++++++-----------------
4 files changed, 61 insertions(+), 43 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
index 6f7c13f..b22605a 100644
--- a/include/net/netfilter/nf_conntrack_l3proto.h
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -76,11 +76,20 @@ struct nf_conntrack_l3proto {
extern struct nf_conntrack_l3proto __rcu *nf_ct_l3protos[AF_MAX];
-/* Protocol registration. */
-extern int nf_conntrack_l3proto_register(struct net *net,
- struct nf_conntrack_l3proto *proto);
-extern void nf_conntrack_l3proto_unregister(struct net *net,
- struct nf_conntrack_l3proto *proto);
+/* Protocol pernet registration. */
+extern int
+nf_conntrack_l3proto_pernet_register(struct net *net,
+ struct nf_conntrack_l3proto *proto);
+extern void
+nf_conntrack_l3proto_pernet_unregister(struct net *net,
+ struct nf_conntrack_l3proto *proto);
+
+/* Protocol global registration. */
+extern int
+nf_conntrack_l3proto_register(struct nf_conntrack_l3proto *proto);
+extern void
+nf_conntrack_l3proto_unregister(struct nf_conntrack_l3proto *proto);
+
extern struct nf_conntrack_l3proto *nf_ct_l3proto_find_get(u_int16_t l3proto);
extern void nf_ct_l3proto_put(struct nf_conntrack_l3proto *p);
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index fcdd0c2..04799da 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -438,10 +438,10 @@ static int ipv4_net_init(struct net *net)
pr_err("nf_conntrack_l4proto_icmp4 :protocol register failed\n");
goto out_icmp;
}
- ret = nf_conntrack_l3proto_register(net,
- &nf_conntrack_l3proto_ipv4);
+ ret = nf_conntrack_l3proto_pernet_register(net,
+ &nf_conntrack_l3proto_ipv4);
if (ret < 0) {
- pr_err("nf_conntrack_l3proto_ipv4 :protocol register failed\n");
+ pr_err("nf_conntrack_l3proto_ipv4 :sysctl register failed\n");
goto out_ipv4;
}
return 0;
@@ -460,7 +460,7 @@ out_tcp:
static void ipv4_net_exit(struct net *net)
{
- nf_conntrack_l3proto_unregister(net,
+ nf_conntrack_l3proto_pernet_unregister(net,
&nf_conntrack_l3proto_ipv4);
nf_conntrack_l4proto_unregister(net,
&nf_conntrack_l4proto_icmp);
@@ -500,16 +500,25 @@ static int __init nf_conntrack_l3proto_ipv4_init(void)
pr_err("nf_conntrack_ipv4: can't register hooks.\n");
goto cleanup_pernet;
}
+
+ ret = nf_conntrack_l3proto_register(&nf_conntrack_l3proto_ipv4);
+ if (ret < 0) {
+ pr_err("nf_conntrack_ipv4: can't register ipv4 proto.\n");
+ goto cleanup_hooks;
+ }
+
#if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
ret = nf_conntrack_ipv4_compat_init();
if (ret < 0)
- goto cleanup_hooks;
+ goto cleanup_proto;
#endif
return ret;
#if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
+ cleanup_proto:
+ nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv4);
+#endif
cleanup_hooks:
nf_unregister_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops));
-#endif
cleanup_pernet:
unregister_pernet_subsys(&ipv4_net_ops);
cleanup_sockopt:
@@ -523,6 +532,7 @@ static void __exit nf_conntrack_l3proto_ipv4_fini(void)
#if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
nf_conntrack_ipv4_compat_fini();
#endif
+ nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv4);
nf_unregister_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops));
unregister_pernet_subsys(&ipv4_net_ops);
nf_unregister_sockopt(&so_getorigdst);
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index 137e245..af2756e 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -439,10 +439,10 @@ static int ipv6_net_init(struct net *net)
printk(KERN_ERR "nf_conntrack_l4proto_icmp6: protocol register failed\n");
goto cleanup_udp6;
}
- ret = nf_conntrack_l3proto_register(net,
- &nf_conntrack_l3proto_ipv6);
+ ret = nf_conntrack_l3proto_pernet_register(net,
+ &nf_conntrack_l3proto_ipv6);
if (ret < 0) {
- printk(KERN_ERR "nf_conntrack_l3proto_ipv6: protocol register failed\n");
+ pr_err("nf_conntrack_l3proto_ipv6: sysctl register failed.\n");
goto cleanup_icmpv6;
}
return 0;
@@ -461,7 +461,7 @@ static int ipv6_net_init(struct net *net)
static void ipv6_net_exit(struct net *net)
{
- nf_conntrack_l3proto_unregister(net,
+ nf_conntrack_l3proto_pernet_unregister(net,
&nf_conntrack_l3proto_ipv6);
nf_conntrack_l4proto_unregister(net,
&nf_conntrack_l4proto_icmpv6);
@@ -491,19 +491,28 @@ static int __init nf_conntrack_l3proto_ipv6_init(void)
ret = register_pernet_subsys(&ipv6_net_ops);
if (ret < 0)
- goto cleanup_pernet;
+ goto cleanup_sockopt;
+
ret = nf_register_hooks(ipv6_conntrack_ops,
ARRAY_SIZE(ipv6_conntrack_ops));
if (ret < 0) {
pr_err("nf_conntrack_ipv6: can't register pre-routing defrag "
"hook.\n");
- goto cleanup_ipv6;
+ goto cleanup_pernet;
+ }
+
+ ret = nf_conntrack_l3proto_register(&nf_conntrack_l3proto_ipv6);
+ if (ret < 0) {
+ pr_err("nf_conntrack_ipv6: can't register ipv6 proto.\n");
+ goto cleanup_hooks;
}
return ret;
- cleanup_ipv6:
- unregister_pernet_subsys(&ipv6_net_ops);
+ cleanup_hooks:
+ nf_unregister_hooks(ipv6_conntrack_ops, ARRAY_SIZE(ipv6_conntrack_ops));
cleanup_pernet:
+ unregister_pernet_subsys(&ipv6_net_ops);
+ cleanup_sockopt:
nf_unregister_sockopt(&so_getorigdst6);
return ret;
}
@@ -511,6 +520,7 @@ static int __init nf_conntrack_l3proto_ipv6_init(void)
static void __exit nf_conntrack_l3proto_ipv6_fini(void)
{
synchronize_net();
+ nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv6);
nf_unregister_hooks(ipv6_conntrack_ops, ARRAY_SIZE(ipv6_conntrack_ops));
unregister_pernet_subsys(&ipv6_net_ops);
nf_unregister_sockopt(&so_getorigdst6);
diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c
index 3d01b90..6ab8b6e 100644
--- a/net/netfilter/nf_conntrack_proto.c
+++ b/net/netfilter/nf_conntrack_proto.c
@@ -212,8 +212,8 @@ static void nf_ct_l3proto_unregister_sysctl(struct net *net,
#endif
}
-static int
-nf_conntrack_l3proto_register_net(struct nf_conntrack_l3proto *proto)
+int
+nf_conntrack_l3proto_register(struct nf_conntrack_l3proto *proto)
{
int ret = 0;
struct nf_conntrack_l3proto *old;
@@ -242,9 +242,10 @@ out_unlock:
return ret;
}
+EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_register);
-int nf_conntrack_l3proto_register(struct net *net,
- struct nf_conntrack_l3proto *proto)
+int nf_conntrack_l3proto_pernet_register(struct net *net,
+ struct nf_conntrack_l3proto *proto)
{
int ret = 0;
@@ -254,22 +255,12 @@ int nf_conntrack_l3proto_register(struct net *net,
return ret;
}
- 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;
+ return nf_ct_l3proto_register_sysctl(net, proto);
}
-EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_register);
+EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_pernet_register);
-static void
-nf_conntrack_l3proto_unregister_net(struct nf_conntrack_l3proto *proto)
+void
+nf_conntrack_l3proto_unregister(struct nf_conntrack_l3proto *proto)
{
BUG_ON(proto->l3proto >= AF_MAX);
@@ -283,19 +274,17 @@ nf_conntrack_l3proto_unregister_net(struct nf_conntrack_l3proto *proto)
synchronize_rcu();
}
+EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_unregister);
-void nf_conntrack_l3proto_unregister(struct net *net,
- struct nf_conntrack_l3proto *proto)
+void nf_conntrack_l3proto_pernet_unregister(struct net *net,
+ struct nf_conntrack_l3proto *proto)
{
- if (net == &init_net)
- nf_conntrack_l3proto_unregister_net(proto);
-
nf_ct_l3proto_unregister_sysctl(net, proto);
/* Remove all contrack entries for this protocol */
nf_ct_iterate_cleanup(net, kill_l3proto, proto);
}
-EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_unregister);
+EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_pernet_unregister);
static struct nf_proto_net *nf_ct_l4proto_net(struct net *net,
struct nf_conntrack_l4proto *l4proto)
--
1.7.11.7
--
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