[IPV6]: Ignore ipv6 events on non-IPV6 capable devices.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Urs Thuermann <urs@isnogud.escape.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 21 insertions, 10 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index c7ea248fae2e..329de679ac38 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2154,15 +2154,6 @@ static void addrconf_dev_config(struct net_device *dev)
 
         ASSERT_RTNL();
 
-        if ((dev->type != ARPHRD_ETHER) &&
-            (dev->type != ARPHRD_FDDI) &&
-            (dev->type != ARPHRD_IEEE802_TR) &&
-            (dev->type != ARPHRD_ARCNET) &&
-            (dev->type != ARPHRD_INFINIBAND)) {
-                /* Alas, we support only Ethernet autoconfiguration. */
-                return;
-        }
-
         idev = addrconf_add_dev(dev);
         if (idev == NULL)
                 return;
@@ -2250,13 +2241,33 @@ static void addrconf_ip6_tnl_config(struct net_device *dev)
         ip6_tnl_add_linklocal(idev);
 }
 
+static int ipv6_hwtype(struct net_device *dev)
+{
+        if ((dev->type == ARPHRD_ETHER) ||
+            (dev->type == ARPHRD_LOOPBACK) ||
+            (dev->type == ARPHRD_SIT) ||
+            (dev->type == ARPHRD_TUNNEL6) ||
+            (dev->type == ARPHRD_FDDI) ||
+            (dev->type == ARPHRD_IEEE802_TR) ||
+            (dev->type == ARPHRD_ARCNET) ||
+            (dev->type == ARPHRD_INFINIBAND))
+                return 1;
+
+        return 0;
+}
+
 static int addrconf_notify(struct notifier_block *this, unsigned long event,
                            void * data)
 {
         struct net_device *dev = (struct net_device *) data;
-        struct inet6_dev *idev = __in6_dev_get(dev);
+        struct inet6_dev *idev;
         int run_pending = 0;
 
+        if (!ipv6_hwtype(dev))
+                return NOTIFY_OK;
+
+        idev = __in6_dev_get(dev);
+
         switch(event) {
         case NETDEV_REGISTER:
                 if (!idev) {