[NETPOLL]: netpoll_send_skb simplify

Minor netpoll_send_skb restructuring

Restructure to avoid confusing goto and move some bits out of the
retry loop.
Signed-off-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/netpoll.c

@@ -248,14 +248,14 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 	int status;
 	struct netpoll_info *npinfo;
 
-repeat:
-	if(!np || !np->dev || !netif_running(np->dev)) {
+	if (!np || !np->dev || !netif_running(np->dev)) {
 		__kfree_skb(skb);
 		return;
 	}
 
-	/* avoid recursion */
 	npinfo = np->dev->npinfo;
+
+	/* avoid recursion */
 	if (npinfo->poll_owner == smp_processor_id() ||
 	    np->dev->xmit_lock_owner == smp_processor_id()) {
 		if (np->drop)
@@ -265,6 +265,7 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 		return;
 	}
 
+	while (1) {
 		spin_lock(&np->dev->xmit_lock);
 		np->dev->xmit_lock_owner = smp_processor_id();
 
@@ -275,19 +276,20 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 		if (netif_queue_stopped(np->dev)) {
 			np->dev->xmit_lock_owner = -1;
 			spin_unlock(&np->dev->xmit_lock);
-
 			netpoll_poll(np);
-		goto repeat;
+			continue;
 		}
 
 		status = np->dev->hard_start_xmit(skb, np->dev);
 		np->dev->xmit_lock_owner = -1;
 		spin_unlock(&np->dev->xmit_lock);
 
+		/* success */
+		if(!status)
+			return;
+
 		/* transmit busy */
-	if(status) {
 		netpoll_poll(np);
-		goto repeat;
 	}
 }