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/net/ethernet/eth.c b/net/ethernet/eth.c
index 61ec032..215c839 100644
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -158,7 +158,6 @@
 __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
 {
 	struct ethhdr *eth;
-	unsigned char *rawp;
 
 	skb->dev = dev;
 	skb_reset_mac_header(skb);
@@ -199,15 +198,13 @@
 	if (ntohs(eth->h_proto) >= 1536)
 		return eth->h_proto;
 
-	rawp = skb->data;
-
 	/*
 	 *      This is a magic hack to spot IPX packets. Older Novell breaks
 	 *      the protocol design and runs IPX over 802.3 without an 802.2 LLC
 	 *      layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
 	 *      won't work for fault tolerant netware but does for the rest.
 	 */
-	if (*(unsigned short *)rawp == 0xFFFF)
+	if (skb->len >= 2 && *(unsigned short *)(skb->data) == 0xFFFF)
 		return htons(ETH_P_802_3);
 
 	/*