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[IPIP]: Introduce empty ipip_net structure and net init/exit ops.

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Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2008-04-16 01:03:13 -07:00 committed by David S. Miller
parent 30688a9a3e
commit 10dc4c7bb7
1 changed files with 50 additions and 0 deletions
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50
net/ipv4/ipip.c
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@ -115,10 +115,16 @@
#include <net/ipip.h>
#include <net/inet_ecn.h>
#include <net/xfrm.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#define HASH_SIZE 16
#define HASH(addr) (((__force u32)addr^((__force u32)addr>>4))&0xF)
static int ipip_net_id;
struct ipip_net {
};
static int ipip_fb_tunnel_init(struct net_device *dev);
static int ipip_tunnel_init(struct net_device *dev);
static void ipip_tunnel_setup(struct net_device *dev);
@ -867,6 +873,41 @@ static struct xfrm_tunnel ipip_handler = {
static char banner[] __initdata =
KERN_INFO "IPv4 over IPv4 tunneling driver\n";
static int ipip_init_net(struct net *net)
{
int err;
struct ipip_net *ipn;
err = -ENOMEM;
ipn = kmalloc(sizeof(struct ipip_net), GFP_KERNEL);
if (ipn == NULL)
goto err_alloc;
err = net_assign_generic(net, ipip_net_id, ipn);
if (err < 0)
goto err_assign;
return 0;
err_assign:
kfree(ipn);
err_alloc:
return err;
}
static void ipip_exit_net(struct net *net)
{
struct ipip_net *ipn;
ipn = net_generic(net, ipip_net_id);
kfree(ipn);
}
static struct pernet_operations ipip_net_ops = {
.init = ipip_init_net,
.exit = ipip_exit_net,
};
static int __init ipip_init(void)
{
int err;
@ -890,6 +931,10 @@ static int __init ipip_init(void)
if ((err = register_netdev(ipip_fb_tunnel_dev)))
goto err2;
err = register_pernet_gen_device(&ipip_net_id, &ipip_net_ops);
if (err)
goto err3;
out:
return err;
err2:
@ -897,6 +942,9 @@ static int __init ipip_init(void)
err1:
xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
goto out;
err3:
unregister_netdevice(ipip_fb_tunnel_dev);
goto err1;
}
static void __exit ipip_destroy_tunnels(void)
@ -922,6 +970,8 @@ static void __exit ipip_fini(void)
ipip_destroy_tunnels();
unregister_netdevice(ipip_fb_tunnel_dev);
rtnl_unlock();
unregister_pernet_gen_device(ipip_net_id, &ipip_net_ops);
}
module_init(ipip_init);