net-next: remove useless union keyword

remove useless union keyword in rtable, rt6_info and dn_route.

Since there is only one member in a union, the union keyword isn't useful.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/dn_route.h b/include/net/dn_route.h
index 60c9f22..ccadab3 100644
--- a/include/net/dn_route.h
+++ b/include/net/dn_route.h
@@ -65,9 +65,7 @@
  * packets to the originating host.
  */
 struct dn_route {
-	union {
-		struct dst_entry dst;
-	} u;
+	struct dst_entry dst;
 
 	struct flowi fl;
 
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 4b1dc11..062a823 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -84,13 +84,11 @@
 struct fib6_table;
 
 struct rt6_info {
-	union {
-		struct dst_entry	dst;
-	} u;
+	struct dst_entry		dst;
 
-#define rt6i_dev			u.dst.dev
-#define rt6i_nexthop			u.dst.neighbour
-#define rt6i_expires			u.dst.expires
+#define rt6i_dev			dst.dev
+#define rt6i_nexthop			dst.neighbour
+#define rt6i_expires			dst.expires
 
 	/*
 	 * Tail elements of dst_entry (__refcnt etc.)
diff --git a/include/net/ipip.h b/include/net/ipip.h
index 11e8513..65caea8 100644
--- a/include/net/ipip.h
+++ b/include/net/ipip.h
@@ -50,7 +50,7 @@
 	int pkt_len = skb->len - skb_transport_offset(skb);		\
 									\
 	skb->ip_summed = CHECKSUM_NONE;					\
-	ip_select_ident(iph, &rt->u.dst, NULL);				\
+	ip_select_ident(iph, &rt->dst, NULL);				\
 									\
 	err = ip_local_out(skb);					\
 	if (likely(net_xmit_eval(err) == 0)) {				\
diff --git a/include/net/route.h b/include/net/route.h
index af6cf4b..bd732d6 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -50,9 +50,7 @@
 struct fib_nh;
 struct inet_peer;
 struct rtable {
-	union {
-		struct dst_entry	dst;
-	} u;
+	struct dst_entry	dst;
 
 	/* Cache lookup keys */
 	struct flowi		fl;
@@ -144,7 +142,7 @@
 static inline void ip_rt_put(struct rtable * rt)
 {
 	if (rt)
-		dst_release(&rt->u.dst);
+		dst_release(&rt->dst);
 }
 
 #define IPTOS_RT_MASK	(IPTOS_TOS_MASK & ~3)