[IPV6]: Introduce ip6_dst_idev() to get inet6_dev{} stored in dst_entry{}.
Otherwise, we will see a lot of casts...
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 6b8e6d7..ebf54ae 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -84,7 +84,7 @@
* arrived via the sending interface (ethX), because of the
* nature of scoping architecture. --yoshfuji
*/
- IP6CB(skb)->iif = skb->dst ? ((struct rt6_info *)skb->dst)->rt6i_idev->dev->ifindex : dev->ifindex;
+ IP6CB(skb)->iif = skb->dst ? ip6_dst_idev(skb->dst)->dev->ifindex : dev->ifindex;
if (unlikely(!pskb_may_pull(skb, sizeof(*hdr))))
goto err;