net: Abstract dst->neighbour accesses behind helpers.

dst_{get,set}_neighbour()

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

1 files changed, 15 insertions, 3 deletions

diff --git a/include/net/dst.h b/include/net/dst.h
index 0dd7ccbc0dd5..8147206eefb9 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -37,7 +37,7 @@ struct dst_entry {
         unsigned long           _metrics;
         unsigned long           expires;
         struct dst_entry        *path;
-        struct neighbour        *neighbour;
+        struct neighbour        *_neighbour;
 #ifdef CONFIG_XFRM
         struct xfrm_state       *xfrm;
 #else
@@ -86,6 +86,16 @@ struct dst_entry {
         };
 };
 
+static inline struct neighbour *dst_get_neighbour(struct dst_entry *dst)
+{
+        return dst->_neighbour;
+}
+
+static inline void dst_set_neighbour(struct dst_entry *dst, struct neighbour *neigh)
+{
+        dst->_neighbour = neigh;
+}
+
 extern u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old);
 extern const u32 dst_default_metrics[RTAX_MAX];
 
@@ -371,8 +381,10 @@ static inline void dst_rcu_free(struct rcu_head *head)
 
 static inline void dst_confirm(struct dst_entry *dst)
 {
-        if (dst)
-                neigh_confirm(dst->neighbour);
+        if (dst) {
+                struct neighbour *n = dst_get_neighbour(dst);
+                neigh_confirm(n);
+        }
 }
 
 static inline void dst_link_failure(struct sk_buff *skb)