net: skb->rtable accessor

Define skb_rtable(const struct sk_buff *skb) accessor to get rtable from skb

Delete skb->rtable field

Setting rtable is not allowed, just set dst instead as rtable is an alias.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 6 insertions, 2 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d4d7c666ca63..a3ae3c525833 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -324,7 +324,6 @@ struct sk_buff {
 
         union {
                 struct  dst_entry       *dst;
-                struct  rtable          *rtable;
                 unsigned long           _skb_dst;
         };
 #ifdef CONFIG_XFRM
@@ -427,6 +426,11 @@ extern void skb_dma_unmap(struct device *dev, struct sk_buff *skb,
                           enum dma_data_direction dir);
 #endif
 
+static inline struct rtable *skb_rtable(const struct sk_buff *skb)
+{
+        return (struct rtable *)skb->_skb_dst;
+}
+
 extern void kfree_skb(struct sk_buff *skb);
 extern void consume_skb(struct sk_buff *skb);
 extern void            __kfree_skb(struct sk_buff *skb);
diff --git a/include/net/route.h b/include/net/route.h
index 4e8cae0e5841..40f6346ef496 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -210,7 +210,7 @@ static inline struct inet_peer *rt_get_peer(struct rtable *rt)
 
 static inline int inet_iif(const struct sk_buff *skb)
 {
-        return skb->rtable->rt_iif;
+        return skb_rtable(skb)->rt_iif;
 }
 
 #endif  /* _ROUTE_H */