diff options
| -rw-r--r-- | net/ipv6/ip6_tunnel.c | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 72485a3ac9f..511a6c41688 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -82,12 +82,10 @@ 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 */ + struct net_device *fb_tnl_dev; }; -/* the IPv6 tunnel fallback device */ -static struct net_device *ip6_fb_tnl_dev; - - /* lists for storing tunnels in use */ static struct ip6_tnl *tnls_r_l[HASH_SIZE]; static struct ip6_tnl *tnls_wc[1]; @@ -314,7 +312,7 @@ ip6_tnl_dev_uninit(struct net_device *dev) struct net *net = dev_net(dev); struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id); - if (dev == ip6_fb_tnl_dev) { + if (dev == ip6n->fb_tnl_dev) { write_lock_bh(&ip6_tnl_lock); tnls_wc[0] = NULL; write_unlock_bh(&ip6_tnl_lock); @@ -1209,7 +1207,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) switch (cmd) { case SIOCGETTUNNEL: - if (dev == ip6_fb_tnl_dev) { + if (dev == ip6n->fb_tnl_dev) { if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof (p))) { err = -EFAULT; break; @@ -1236,7 +1234,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) p.proto != 0) break; t = ip6_tnl_locate(net, &p, cmd == SIOCADDTUNNEL); - if (dev != ip6_fb_tnl_dev && cmd == SIOCCHGTUNNEL) { + if (dev != ip6n->fb_tnl_dev && cmd == SIOCCHGTUNNEL) { if (t != NULL) { if (t->dev != dev) { err = -EEXIST; @@ -1263,7 +1261,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) if (!capable(CAP_NET_ADMIN)) break; - if (dev == ip6_fb_tnl_dev) { + if (dev == ip6n->fb_tnl_dev) { err = -EFAULT; if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof (p))) break; @@ -1271,7 +1269,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) if ((t = ip6_tnl_locate(net, &p, 0)) == NULL) break; err = -EPERM; - if (t->dev == ip6_fb_tnl_dev) + if (t->dev == ip6n->fb_tnl_dev) break; dev = t->dev; } @@ -1413,8 +1411,25 @@ static int ip6_tnl_init_net(struct net *net) if (err < 0) goto err_assign; + err = -ENOMEM; + ip6n->fb_tnl_dev = alloc_netdev(sizeof(struct ip6_tnl), "ip6tnl0", + ip6_tnl_dev_setup); + + if (!ip6n->fb_tnl_dev) + goto err_alloc_dev; + + ip6n->fb_tnl_dev->init = ip6_fb_tnl_dev_init; + dev_net_set(ip6n->fb_tnl_dev, net); + + err = register_netdev(ip6n->fb_tnl_dev); + if (err < 0) + goto err_register; return 0; +err_register: + free_netdev(ip6n->fb_tnl_dev); +err_alloc_dev: + /* nothing */ err_assign: kfree(ip6n); err_alloc: @@ -1455,27 +1470,12 @@ static int __init ip6_tunnel_init(void) err = -EAGAIN; goto unreg_ip4ip6; } - ip6_fb_tnl_dev = alloc_netdev(sizeof(struct ip6_tnl), "ip6tnl0", - ip6_tnl_dev_setup); - - if (!ip6_fb_tnl_dev) { - err = -ENOMEM; - goto fail; - } - ip6_fb_tnl_dev->init = ip6_fb_tnl_dev_init; - - if ((err = register_netdev(ip6_fb_tnl_dev))) { - 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: xfrm6_tunnel_deregister(&ip4ip6_handler, AF_INET); |