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[GRE]: Introduce empty ipgre_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 01:08:53 -07:00 committed by David S. Miller
parent 4597a0ce08
commit 59a4c7594b
1 changed files with 49 additions and 0 deletions
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49
net/ipv4/ip_gre.c
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@ -39,6 +39,8 @@
#include <net/dsfield.h>
#include <net/inet_ecn.h>
#include <net/xfrm.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#ifdef CONFIG_IPV6
#include <net/ipv6.h>
@ -122,6 +124,10 @@ static void ipgre_tunnel_setup(struct net_device *dev);
static int ipgre_fb_tunnel_init(struct net_device *dev);
static int ipgre_net_id;
struct ipgre_net {
};
static struct net_device *ipgre_fb_tunnel_dev;
/* Tunnel hash table */
@ -1275,6 +1281,40 @@ static struct net_protocol ipgre_protocol = {
.err_handler = ipgre_err,
};
static int ipgre_init_net(struct net *net)
{
int err;
struct ipgre_net *ign;
err = -ENOMEM;
ign = kmalloc(sizeof(struct ipgre_net), GFP_KERNEL);
if (ign == NULL)
goto err_alloc;
err = net_assign_generic(net, ipgre_net_id, ign);
if (err < 0)
goto err_assign;
return 0;
err_assign:
kfree(ign);
err_alloc:
return err;
}
static void ipgre_exit_net(struct net *net)
{
struct ipgre_net *ign;
ign = net_generic(net, ipgre_net_id);
kfree(ign);
}
static struct pernet_operations ipgre_net_ops = {
.init = ipgre_init_net,
.exit = ipgre_exit_net,
};
/*
* And now the modules code and kernel interface.
@ -1302,6 +1342,10 @@ static int __init ipgre_init(void)
if ((err = register_netdev(ipgre_fb_tunnel_dev)))
goto err2;
err = register_pernet_gen_device(&ipgre_net_id, &ipgre_net_ops);
if (err < 0)
goto err3;
out:
return err;
err2:
@ -1309,6 +1353,9 @@ static int __init ipgre_init(void)
err1:
inet_del_protocol(&ipgre_protocol, IPPROTO_GRE);
goto out;
err3:
unregister_netdevice(ipgre_fb_tunnel_dev);
goto err1;
}
static void __exit ipgre_destroy_tunnels(void)
@ -1333,6 +1380,8 @@ static void __exit ipgre_fini(void)
rtnl_lock();
ipgre_destroy_tunnels();
rtnl_unlock();
unregister_pernet_gen_device(ipgre_net_id, &ipgre_net_ops);
}
module_init(ipgre_init);