[NETFILTER]: x_tables: create per-netns /proc/net/*_tables_*

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 36 insertions, 6 deletions

diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 3608675ab08c..a7591ce344d2 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -1822,11 +1822,26 @@ static struct nf_sockopt_ops arpt_sockopts = {
         .owner          = THIS_MODULE,
 };
 
+static int __net_init arp_tables_net_init(struct net *net)
+{
+        return xt_proto_init(net, NF_ARP);
+}
+
+static void __net_exit arp_tables_net_exit(struct net *net)
+{
+        xt_proto_fini(net, NF_ARP);
+}
+
+static struct pernet_operations arp_tables_net_ops = {
+        .init = arp_tables_net_init,
+        .exit = arp_tables_net_exit,
+};
+
 static int __init arp_tables_init(void)
 {
         int ret;
 
-        ret = xt_proto_init(NF_ARP);
+        ret = register_pernet_subsys(&arp_tables_net_ops);
         if (ret < 0)
                 goto err1;
 
@@ -1851,7 +1866,7 @@ err4:
 err3:
         xt_unregister_target(&arpt_standard_target);
 err2:
-        xt_proto_fini(NF_ARP);
+        unregister_pernet_subsys(&arp_tables_net_ops);
 err1:
         return ret;
 }
@@ -1861,7 +1876,7 @@ static void __exit arp_tables_fini(void)
         nf_unregister_sockopt(&arpt_sockopts);
         xt_unregister_target(&arpt_error_target);
         xt_unregister_target(&arpt_standard_target);
-        xt_proto_fini(NF_ARP);
+        unregister_pernet_subsys(&arp_tables_net_ops);
 }
 
 EXPORT_SYMBOL(arpt_register_table);
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index a73afa1ba8b8..600737f122d2 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -2213,11 +2213,26 @@ static struct xt_match icmp_matchstruct __read_mostly = {
         .family         = AF_INET,
 };
 
+static int __net_init ip_tables_net_init(struct net *net)
+{
+        return xt_proto_init(net, AF_INET);
+}
+
+static void __net_exit ip_tables_net_exit(struct net *net)
+{
+        xt_proto_fini(net, AF_INET);
+}
+
+static struct pernet_operations ip_tables_net_ops = {
+        .init = ip_tables_net_init,
+        .exit = ip_tables_net_exit,
+};
+
 static int __init ip_tables_init(void)
 {
         int ret;
 
-        ret = xt_proto_init(AF_INET);
+        ret = register_pernet_subsys(&ip_tables_net_ops);
         if (ret < 0)
                 goto err1;
 
@@ -2247,7 +2262,7 @@ err4:
 err3:
         xt_unregister_target(&ipt_standard_target);
 err2:
-        xt_proto_fini(AF_INET);
+        unregister_pernet_subsys(&ip_tables_net_ops);
 err1:
         return ret;
 }
@@ -2260,7 +2275,7 @@ static void __exit ip_tables_fini(void)
         xt_unregister_target(&ipt_error_target);
         xt_unregister_target(&ipt_standard_target);
 
-        xt_proto_fini(AF_INET);
+        unregister_pernet_subsys(&ip_tables_net_ops);
 }
 
 EXPORT_SYMBOL(ipt_register_table);