[IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts
(Anonymous) unions can help us to avoid ugly casts.
A common cast it the (struct rtable *)skb->dst one.
Defining an union like :
union {
struct dst_entry *dst;
struct rtable *rtable;
};
permits to use skb->rtable in place.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index 3da4129..72cf86e 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -256,10 +256,10 @@
META_COLLECTOR(int_rtiif)
{
- if (unlikely(skb->dst == NULL))
+ if (unlikely(skb->rtable == NULL))
*err = -1;
else
- dst->value = ((struct rtable*) skb->dst)->fl.iif;
+ dst->value = skb->rtable->fl.iif;
}
/**************************************************************************