[SIT]: Make the fallback tunnel device per-net
Allocate and register one in sit_init_net, use sitn->fb_tunnel_dev over the code and unregister one in sit_exit_net. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
fcee5ec9fd
commit
cd3dbc194d
|
@ -70,10 +70,9 @@ static void ipip6_tunnel_setup(struct net_device *dev);
|
|||
|
||||
static int sit_net_id;
|
||||
struct sit_net {
|
||||
struct net_device *fb_tunnel_dev;
|
||||
};
|
||||
|
||||
static struct net_device *ipip6_fb_tunnel_dev;
|
||||
|
||||
static struct ip_tunnel *tunnels_r_l[HASH_SIZE];
|
||||
static struct ip_tunnel *tunnels_r[HASH_SIZE];
|
||||
static struct ip_tunnel *tunnels_l[HASH_SIZE];
|
||||
|
@ -386,7 +385,7 @@ static void ipip6_tunnel_uninit(struct net_device *dev)
|
|||
struct net *net = dev_net(dev);
|
||||
struct sit_net *sitn = net_generic(net, sit_net_id);
|
||||
|
||||
if (dev == ipip6_fb_tunnel_dev) {
|
||||
if (dev == sitn->fb_tunnel_dev) {
|
||||
write_lock_bh(&ipip6_lock);
|
||||
tunnels_wc[0] = NULL;
|
||||
write_unlock_bh(&ipip6_lock);
|
||||
|
@ -862,7 +861,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
|
|||
switch (cmd) {
|
||||
case SIOCGETTUNNEL:
|
||||
t = NULL;
|
||||
if (dev == ipip6_fb_tunnel_dev) {
|
||||
if (dev == sitn->fb_tunnel_dev) {
|
||||
if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) {
|
||||
err = -EFAULT;
|
||||
break;
|
||||
|
@ -895,7 +894,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
|
|||
|
||||
t = ipip6_tunnel_locate(net, &p, cmd == SIOCADDTUNNEL);
|
||||
|
||||
if (dev != ipip6_fb_tunnel_dev && cmd == SIOCCHGTUNNEL) {
|
||||
if (dev != sitn->fb_tunnel_dev && cmd == SIOCCHGTUNNEL) {
|
||||
if (t != NULL) {
|
||||
if (t->dev != dev) {
|
||||
err = -EEXIST;
|
||||
|
@ -940,7 +939,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
|
|||
if (!capable(CAP_NET_ADMIN))
|
||||
goto done;
|
||||
|
||||
if (dev == ipip6_fb_tunnel_dev) {
|
||||
if (dev == sitn->fb_tunnel_dev) {
|
||||
err = -EFAULT;
|
||||
if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
|
||||
goto done;
|
||||
|
@ -948,7 +947,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
|
|||
if ((t = ipip6_tunnel_locate(net, &p, 0)) == NULL)
|
||||
goto done;
|
||||
err = -EPERM;
|
||||
if (t == netdev_priv(ipip6_fb_tunnel_dev))
|
||||
if (t == netdev_priv(sitn->fb_tunnel_dev))
|
||||
goto done;
|
||||
dev = t->dev;
|
||||
}
|
||||
|
@ -964,7 +963,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
|
|||
if (cmd != SIOCGETPRL && !capable(CAP_NET_ADMIN))
|
||||
goto done;
|
||||
err = -EINVAL;
|
||||
if (dev == ipip6_fb_tunnel_dev)
|
||||
if (dev == sitn->fb_tunnel_dev)
|
||||
goto done;
|
||||
err = -EFAULT;
|
||||
if (copy_from_user(&prl, ifr->ifr_ifru.ifru_data, sizeof(prl)))
|
||||
|
@ -1047,7 +1046,7 @@ static int ipip6_tunnel_init(struct net_device *dev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int __init ipip6_fb_tunnel_init(struct net_device *dev)
|
||||
static int ipip6_fb_tunnel_init(struct net_device *dev)
|
||||
{
|
||||
struct ip_tunnel *tunnel = netdev_priv(dev);
|
||||
struct iphdr *iph = &tunnel->parms.iph;
|
||||
|
@ -1099,8 +1098,25 @@ static int sit_init_net(struct net *net)
|
|||
if (err < 0)
|
||||
goto err_assign;
|
||||
|
||||
sitn->fb_tunnel_dev = alloc_netdev(sizeof(struct ip_tunnel), "sit0",
|
||||
ipip6_tunnel_setup);
|
||||
if (!sitn->fb_tunnel_dev) {
|
||||
err = -ENOMEM;
|
||||
goto err_alloc_dev;
|
||||
}
|
||||
|
||||
sitn->fb_tunnel_dev->init = ipip6_fb_tunnel_init;
|
||||
dev_net_set(sitn->fb_tunnel_dev, net);
|
||||
|
||||
if ((err = register_netdev(sitn->fb_tunnel_dev)))
|
||||
goto err_reg_dev;
|
||||
|
||||
return 0;
|
||||
|
||||
err_reg_dev:
|
||||
free_netdev(sitn->fb_tunnel_dev);
|
||||
err_alloc_dev:
|
||||
/* nothing */
|
||||
err_assign:
|
||||
kfree(sitn);
|
||||
err_alloc:
|
||||
|
@ -1112,6 +1128,9 @@ static void sit_exit_net(struct net *net)
|
|||
struct sit_net *sitn;
|
||||
|
||||
sitn = net_generic(net, sit_net_id);
|
||||
rtnl_lock();
|
||||
unregister_netdevice(sitn->fb_tunnel_dev);
|
||||
rtnl_unlock();
|
||||
kfree(sitn);
|
||||
}
|
||||
|
||||
|
@ -1126,7 +1145,6 @@ static void __exit sit_cleanup(void)
|
|||
|
||||
rtnl_lock();
|
||||
sit_destroy_tunnels();
|
||||
unregister_netdevice(ipip6_fb_tunnel_dev);
|
||||
rtnl_unlock();
|
||||
|
||||
unregister_pernet_gen_device(sit_net_id, &sit_net_ops);
|
||||
|
@ -1143,32 +1161,11 @@ static int __init sit_init(void)
|
|||
return -EAGAIN;
|
||||
}
|
||||
|
||||
ipip6_fb_tunnel_dev = alloc_netdev(sizeof(struct ip_tunnel), "sit0",
|
||||
ipip6_tunnel_setup);
|
||||
if (!ipip6_fb_tunnel_dev) {
|
||||
err = -ENOMEM;
|
||||
goto err1;
|
||||
}
|
||||
|
||||
ipip6_fb_tunnel_dev->init = ipip6_fb_tunnel_init;
|
||||
|
||||
if ((err = register_netdev(ipip6_fb_tunnel_dev)))
|
||||
goto err2;
|
||||
|
||||
err = register_pernet_gen_device(&sit_net_id, &sit_net_ops);
|
||||
if (err < 0)
|
||||
goto err3;
|
||||
xfrm4_tunnel_deregister(&sit_handler, AF_INET6);
|
||||
|
||||
out:
|
||||
return err;
|
||||
err2:
|
||||
free_netdev(ipip6_fb_tunnel_dev);
|
||||
err1:
|
||||
xfrm4_tunnel_deregister(&sit_handler, AF_INET6);
|
||||
goto out;
|
||||
err3:
|
||||
unregister_netdevice(ipip6_fb_tunnel_dev);
|
||||
goto err1;
|
||||
}
|
||||
|
||||
module_init(sit_init);
|
||||
|
|
Loading…
Reference in New Issue