diff options
| -rw-r--r-- | net/ipv4/ip_gre.c | 63 |
1 files changed, 32 insertions, 31 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 1a17c5beffd..a8ec0904e5a 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -126,10 +126,9 @@ static int ipgre_fb_tunnel_init(struct net_device *dev); static int ipgre_net_id; struct ipgre_net { + struct net_device *fb_tunnel_dev; }; -static struct net_device *ipgre_fb_tunnel_dev; - /* Tunnel hash table */ /* @@ -168,6 +167,7 @@ static struct ip_tunnel * ipgre_tunnel_lookup(struct net *net, unsigned h0 = HASH(remote); unsigned h1 = HASH(key); struct ip_tunnel *t; + struct ipgre_net *ign = net_generic(net, ipgre_net_id); for (t = tunnels_r_l[h0^h1]; t; t = t->next) { if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr) { @@ -194,8 +194,8 @@ static struct ip_tunnel * ipgre_tunnel_lookup(struct net *net, return t; } - if (ipgre_fb_tunnel_dev->flags&IFF_UP) - return netdev_priv(ipgre_fb_tunnel_dev); + if (ign->fb_tunnel_dev->flags&IFF_UP) + return netdev_priv(ign->fb_tunnel_dev); return NULL; } @@ -977,7 +977,7 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) switch (cmd) { case SIOCGETTUNNEL: t = NULL; - if (dev == ipgre_fb_tunnel_dev) { + if (dev == ign->fb_tunnel_dev) { if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) { err = -EFAULT; break; @@ -1016,7 +1016,7 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) t = ipgre_tunnel_locate(net, &p, cmd == SIOCADDTUNNEL); - if (dev != ipgre_fb_tunnel_dev && cmd == SIOCCHGTUNNEL) { + if (dev != ign->fb_tunnel_dev && cmd == SIOCCHGTUNNEL) { if (t != NULL) { if (t->dev != dev) { err = -EEXIST; @@ -1071,7 +1071,7 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) if (!capable(CAP_NET_ADMIN)) goto done; - if (dev == ipgre_fb_tunnel_dev) { + if (dev == ign->fb_tunnel_dev) { err = -EFAULT; if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) goto done; @@ -1079,7 +1079,7 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) if ((t = ipgre_tunnel_locate(net, &p, 0)) == NULL) goto done; err = -EPERM; - if (t == netdev_priv(ipgre_fb_tunnel_dev)) + if (t == netdev_priv(ign->fb_tunnel_dev)) goto done; dev = t->dev; } @@ -1270,7 +1270,7 @@ static int ipgre_tunnel_init(struct net_device *dev) return 0; } -static int __init ipgre_fb_tunnel_init(struct net_device *dev) +static int ipgre_fb_tunnel_init(struct net_device *dev) { struct ip_tunnel *tunnel = netdev_priv(dev); struct iphdr *iph = &tunnel->parms.iph; @@ -1308,8 +1308,25 @@ static int ipgre_init_net(struct net *net) if (err < 0) goto err_assign; + ign->fb_tunnel_dev = alloc_netdev(sizeof(struct ip_tunnel), "gre0", + ipgre_tunnel_setup); + if (!ign->fb_tunnel_dev) { + err = -ENOMEM; + goto err_alloc_dev; + } + + ign->fb_tunnel_dev->init = ipgre_fb_tunnel_init; + dev_net_set(ign->fb_tunnel_dev, net); + + if ((err = register_netdev(ign->fb_tunnel_dev))) + goto err_reg_dev; + return 0; +err_reg_dev: + free_netdev(ign->fb_tunnel_dev); +err_alloc_dev: + /* nothing */ err_assign: kfree(ign); err_alloc: @@ -1321,6 +1338,10 @@ static void ipgre_exit_net(struct net *net) struct ipgre_net *ign; ign = net_generic(net, ipgre_net_id); + rtnl_lock(); + if (net != &init_net) + unregister_netdevice(ign->fb_tunnel_dev); + rtnl_unlock(); kfree(ign); } @@ -1344,31 +1365,11 @@ static int __init ipgre_init(void) return -EAGAIN; } - ipgre_fb_tunnel_dev = alloc_netdev(sizeof(struct ip_tunnel), "gre0", - ipgre_tunnel_setup); - if (!ipgre_fb_tunnel_dev) { - err = -ENOMEM; - goto err1; - } - - ipgre_fb_tunnel_dev->init = ipgre_fb_tunnel_init; - - 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: + inet_del_protocol(&ipgre_protocol, IPPROTO_GRE); + return err; -err2: - free_netdev(ipgre_fb_tunnel_dev); -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) |