[IPV4]: Consistency and whitespace cleanup of ip_rcv()

Signed-off-by: NThomas Graf <tgraf@suug.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/ip_input.c

@@ -361,6 +361,7 @@ static inline int ip_rcv_finish(struct sk_buff *skb)
 int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev)
 {
 	struct iphdr *iph;
+	u32 len;
 
 	/* When the interface is in promisc. mode, drop all the crap
 	 * that it receives, do not try to analyse it.
@@ -402,9 +403,8 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
 	if (ip_fast_csum((u8 *)iph, iph->ihl) != 0)
 		goto inhdr_error;
 
-	{
-		__u32 len = ntohs(iph->tot_len); 
-		if (skb->len < len || len < (iph->ihl<<2))
+	len = ntohs(iph->tot_len);
+	if (skb->len < len || len < (iph->ihl*4))
 		goto inhdr_error;
 
 	/* Our transport medium may have padded the buffer out. Now we know it
@@ -415,7 +415,6 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
 		IP_INC_STATS_BH(IPSTATS_MIB_INDISCARDS);
 		goto drop;
 	}
-	}
 
 	return NF_HOOK(PF_INET, NF_IP_PRE_ROUTING, skb, dev, NULL,
 		       ip_rcv_finish);