[E1000E]: update netstats traffic counters realtime

formerly e1000/e1000e only updated traffic counters once every
2 seconds with the register values of bytes/packets. With newer
code however in the interrupt and polling code we can real-time
fill in these values in the netstats struct for users to see.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/e1000e/netdev.c

@@ -458,6 +458,8 @@ next_desc:
 
 	adapter->total_rx_packets += total_rx_packets;
 	adapter->total_rx_bytes += total_rx_bytes;
+	adapter->net_stats.rx_packets += total_rx_packets;
+	adapter->net_stats.rx_bytes += total_rx_bytes;
 	return cleaned;
 }
 
@@ -593,6 +595,8 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
 	}
 	adapter->total_tx_bytes += total_tx_bytes;
 	adapter->total_tx_packets += total_tx_packets;
+	adapter->net_stats.tx_packets += total_tx_packets;
+	adapter->net_stats.tx_bytes += total_tx_bytes;
 	return cleaned;
 }
 
@@ -755,6 +759,8 @@ next_desc:
 
 	adapter->total_rx_packets += total_rx_packets;
 	adapter->total_rx_bytes += total_rx_bytes;
+	adapter->net_stats.rx_packets += total_rx_packets;
+	adapter->net_stats.rx_bytes += total_rx_bytes;
 	return cleaned;
 }
 
@@ -2535,10 +2541,6 @@ void e1000e_update_stats(struct e1000_adapter *adapter)
 	}
 
 	/* Fill out the OS statistics structure */
-	adapter->net_stats.rx_packets = adapter->stats.gprc;
-	adapter->net_stats.tx_packets = adapter->stats.gptc;
-	adapter->net_stats.rx_bytes = adapter->stats.gorcl;
-	adapter->net_stats.tx_bytes = adapter->stats.gotcl;
 	adapter->net_stats.multicast = adapter->stats.mprc;
 	adapter->net_stats.collisions = adapter->stats.colc;