From: David S. Miller <davem@sunset.davemloft.net>
Date: Fri, 6 Apr 2007 18:42:27 +0000 (-0700)
Subject: [IPV6]: Revert recent change to rt6_check_dev().
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=161980f4c6b846625efe6227420175cb41477de3;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[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 3931b33b25e..ad9b285692b 100644
--- 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)