Merge remote-tracking branch 'hid/for-next'

[karo-tx-linux.git] / net / ipv6 / ip6_tunnel.c

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 2d8f4829575b2d410ce74014287b97361e2abf38..583b77e2f69be1d1499da479e2f8da1435d22a97 100644 (file)
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1430,9 +1430,17 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 static int
 ip6_tnl_change_mtu(struct net_device *dev, int new_mtu)
 {
-       if (new_mtu < IPV6_MIN_MTU) {
-               return -EINVAL;
+       struct ip6_tnl *tnl = netdev_priv(dev);
+
+       if (tnl->parms.proto == IPPROTO_IPIP) {
+               if (new_mtu < 68)
+                       return -EINVAL;
+       } else {
+               if (new_mtu < IPV6_MIN_MTU)
+                       return -EINVAL;
        }
+       if (new_mtu > 0xFFF8 - dev->hard_header_len)
+               return -EINVAL;
        dev->mtu = new_mtu;
        return 0;
 }
@@ -1731,8 +1739,6 @@ static void __net_exit ip6_tnl_destroy_tunnels(struct ip6_tnl_net *ip6n)
                }
        }
 
-       t = rtnl_dereference(ip6n->tnls_wc[0]);
-       unregister_netdevice_queue(t->dev, &list);
        unregister_netdevice_many(&list);
 }
 
@@ -1752,6 +1758,7 @@ static int __net_init ip6_tnl_init_net(struct net *net)
        if (!ip6n->fb_tnl_dev)
                goto err_alloc_dev;
        dev_net_set(ip6n->fb_tnl_dev, net);
+       ip6n->fb_tnl_dev->rtnl_link_ops = &ip6_link_ops;
        /* FB netdevice is special: we have one, and only one per netns.
         * Allowing to move it to another netns is clearly unsafe.
         */