r8169: do not account fragments as packets

Only increase tx_{packets,dropped} statistics when transmit or drop
full skb, not just fragment.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/r8169.c

@@ -4094,10 +4094,10 @@ static void rtl8169_tx_clear_range(struct rtl8169_private *tp, u32 start,
 			rtl8169_unmap_tx_skb(&tp->pci_dev->dev, tx_skb,
 					     tp->TxDescArray + entry);
 			if (skb) {
+				tp->dev->stats.tx_dropped++;
 				dev_kfree_skb(skb);
 				tx_skb->skb = NULL;
 			}
-			tp->dev->stats.tx_dropped++;
 		}
 	}
 }
@@ -4402,7 +4402,6 @@ static void rtl8169_tx_interrupt(struct net_device *dev,
 	while (tx_left > 0) {
 		unsigned int entry = dirty_tx % NUM_TX_DESC;
 		struct ring_info *tx_skb = tp->tx_skb + entry;
-		u32 len = tx_skb->len;
 		u32 status;
 
 		rmb();
@@ -4410,12 +4409,11 @@ static void rtl8169_tx_interrupt(struct net_device *dev,
 		if (status & DescOwn)
 			break;
 
-		dev->stats.tx_bytes += len;
-		dev->stats.tx_packets++;
-
 		rtl8169_unmap_tx_skb(&tp->pci_dev->dev, tx_skb,
 				     tp->TxDescArray + entry);
 		if (status & LastFrag) {
+			dev->stats.tx_packets++;
+			dev->stats.tx_bytes += tx_skb->skb->len;
 			dev_kfree_skb(tx_skb->skb);
 			tx_skb->skb = NULL;
 		}