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OpenCloudOS-Kernel
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net: Simplify ipip pernet operations. 

Take advantage of the new pernet automatic storage management,
and stop using compatibility network namespace functions.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2009-11-29 15:46:14 +00:00 committed by David S. Miller
parent cfb8fbf229
commit 86de8a631e
1 changed files with 6 additions and 18 deletions
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24
net/ipv4/ipip.c
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@ -775,17 +775,8 @@ static void ipip_destroy_tunnels(struct ipip_net *ipn, struct list_head *head)
static int ipip_init_net(struct net *net)
{
struct ipip_net *ipn = net_generic(net, ipip_net_id);
int err;
struct ipip_net *ipn;
err = -ENOMEM;
ipn = kzalloc(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;
ipn->tunnels[0] = ipn->tunnels_wc;
ipn->tunnels[1] = ipn->tunnels_l;
@ -812,29 +803,26 @@ err_reg_dev:
free_netdev(ipn->fb_tunnel_dev);
err_alloc_dev:
/* nothing */
err_assign:
kfree(ipn);
err_alloc:
return err;
}
static void ipip_exit_net(struct net *net)
{
struct ipip_net *ipn;
struct ipip_net *ipn = net_generic(net, ipip_net_id);
LIST_HEAD(list);
ipn = net_generic(net, ipip_net_id);
rtnl_lock();
ipip_destroy_tunnels(ipn, &list);
unregister_netdevice_queue(ipn->fb_tunnel_dev, &list);
unregister_netdevice_many(&list);
rtnl_unlock();
kfree(ipn);
}
static struct pernet_operations ipip_net_ops = {
.init = ipip_init_net,
.exit = ipip_exit_net,
.id = &ipip_net_id,
.size = sizeof(struct ipip_net),
};
static int __init ipip_init(void)
@ -848,7 +836,7 @@ static int __init ipip_init(void)
return -EAGAIN;
}
err = register_pernet_gen_device(&ipip_net_id, &ipip_net_ops);
err = register_pernet_device(&ipip_net_ops);
if (err)
xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
@ -860,7 +848,7 @@ static void __exit ipip_fini(void)
if (xfrm4_tunnel_deregister(&ipip_handler, AF_INET))
printk(KERN_INFO "ipip close: can't deregister tunnel\n");
unregister_pernet_gen_device(ipip_net_id, &ipip_net_ops);
unregister_pernet_device(&ipip_net_ops);
}
module_init(ipip_init);