[IPV6]: Revert recent change to rt6_check_dev().

This reverts a0d78ebf3a0e33a1aeacf2fc518ad9273d6a1c2f

It causes pings to link-local addresses to fail.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 3931b33..ad9b285 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -311,21 +311,12 @@ static inline void rt6_probe(struct rt6_info *rt)
 static inline int rt6_check_dev(struct rt6_info *rt, int oif)
 {
        struct net_device *dev = rt->rt6i_dev;
-       int ret = 0;
-
-       if (!oif)
-               return 2;
-       if (dev->flags & IFF_LOOPBACK) {
-               if (!WARN_ON(rt->rt6i_idev == NULL) &&
-                   rt->rt6i_idev->dev->ifindex == oif)
-                       ret = 1;
-               else
-                       return 0;
-       }
-       if (dev->ifindex == oif)
+       if (!oif || dev->ifindex == oif)
                return 2;
-
-       return ret;
+       if ((dev->flags & IFF_LOOPBACK) &&
+           rt->rt6i_idev && rt->rt6i_idev->dev->ifindex == oif)
+               return 1;
+       return 0;
 }
 
 static inline int rt6_check_neigh(struct rt6_info *rt)