arp: Introduce arp_xmit_finish

The function dev_queue_xmit_skb_sk is unncessary and very confusing.
Introduce arp_xmit_finish to remove the need for dev_queue_xmit_skb_sk,
and have arp_xmit_finish call dev_queue_xmit.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/arp.c

@@ -621,6 +621,11 @@ out:
 }
 EXPORT_SYMBOL(arp_create);
 
+static int arp_xmit_finish(struct sock *sk, struct sk_buff *skb)
+{
+	return dev_queue_xmit(skb);
+}
+
 /*
  *	Send an arp packet.
  */
@@ -628,7 +633,7 @@ void arp_xmit(struct sk_buff *skb)
 {
 	/* Send it off, maybe filter it using firewalling first.  */
 	NF_HOOK(NFPROTO_ARP, NF_ARP_OUT, NULL, skb,
-		NULL, skb->dev, dev_queue_xmit_sk);
+		NULL, skb->dev, arp_xmit_finish);
 }
 EXPORT_SYMBOL(arp_xmit);