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authorPavel Emelyanov <xemul@openvz.org>2008-04-16 01:22:02 -0700
committerDavid S. Miller <davem@davemloft.net>2008-04-16 01:22:02 -0700
commit13eeb8e92c95ca8a1c044e3692246f884be826ee (patch)
tree6289aa09ecb35eee4cdf62a39d14c0bdc29dcd42 /net/ipv6/ip6_tunnel.c
parentb0970c428b33ee6e0aa576f58f87dde74262a441 (diff)
downloadop-kernel-dev-13eeb8e92c95ca8a1c044e3692246f884be826ee.zip
op-kernel-dev-13eeb8e92c95ca8a1c044e3692246f884be826ee.tar.gz
[IP6TUNNEL]: Introduce empty ip6_tnl_net structure and net ops.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_tunnel.c')
-rw-r--r--net/ipv6/ip6_tunnel.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 61517fe..2365eb0 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -52,6 +52,8 @@
#include <net/xfrm.h>
#include <net/dsfield.h>
#include <net/inet_ecn.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
MODULE_AUTHOR("Ville Nuorvala");
MODULE_DESCRIPTION("IPv6 tunneling device");
@@ -78,6 +80,10 @@ static int ip6_fb_tnl_dev_init(struct net_device *dev);
static int ip6_tnl_dev_init(struct net_device *dev);
static void ip6_tnl_dev_setup(struct net_device *dev);
+static int ip6_tnl_net_id;
+struct ip6_tnl_net {
+};
+
/* the IPv6 tunnel fallback device */
static struct net_device *ip6_fb_tnl_dev;
@@ -1384,6 +1390,41 @@ static struct xfrm6_tunnel ip6ip6_handler = {
.priority = 1,
};
+static int ip6_tnl_init_net(struct net *net)
+{
+ int err;
+ struct ip6_tnl_net *ip6n;
+
+ err = -ENOMEM;
+ ip6n = kmalloc(sizeof(struct ip6_tnl_net), GFP_KERNEL);
+ if (ip6n == NULL)
+ goto err_alloc;
+
+ err = net_assign_generic(net, ip6_tnl_net_id, ip6n);
+ if (err < 0)
+ goto err_assign;
+
+ return 0;
+
+err_assign:
+ kfree(ip6n);
+err_alloc:
+ return err;
+}
+
+static void ip6_tnl_exit_net(struct net *net)
+{
+ struct ip6_tnl_net *ip6n;
+
+ ip6n = net_generic(net, ip6_tnl_net_id);
+ kfree(ip6n);
+}
+
+static struct pernet_operations ip6_tnl_net_ops = {
+ .init = ip6_tnl_init_net,
+ .exit = ip6_tnl_exit_net,
+};
+
/**
* ip6_tunnel_init - register protocol and reserve needed resources
*
@@ -1418,7 +1459,13 @@ static int __init ip6_tunnel_init(void)
free_netdev(ip6_fb_tnl_dev);
goto fail;
}
+
+ err = register_pernet_gen_device(&ip6_tnl_net_id, &ip6_tnl_net_ops);
+ if (err < 0)
+ goto err_pernet;
return 0;
+err_pernet:
+ unregister_netdevice(ip6_fb_tnl_dev);
fail:
xfrm6_tunnel_deregister(&ip6ip6_handler, AF_INET6);
unreg_ip4ip6:
@@ -1456,6 +1503,8 @@ static void __exit ip6_tunnel_cleanup(void)
rtnl_lock();
ip6_tnl_destroy_tunnels();
rtnl_unlock();
+
+ unregister_pernet_gen_device(ip6_tnl_net_id, &ip6_tnl_net_ops);
}
module_init(ip6_tunnel_init);
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