enic: bug fix: included MAC drops in rx_dropped netstat

Bug fix: included MAC drops in rx_dropped netstat.  Also track Rx trunctations
stat at the MAC

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/enic/enic.h

@@ -99,6 +99,7 @@ struct enic {
 	____cacheline_aligned struct vnic_rq rq[1];
 	unsigned int rq_count;
 	int (*rq_alloc_buf)(struct vnic_rq *rq);
+	u64 rq_truncated_pkts;
 	u64 rq_bad_fcs;
 	struct napi_struct napi;
 	struct net_lro_mgr lro_mgr;

drivers/net/enic/enic_main.c

@@ -738,8 +738,9 @@ static struct net_device_stats *enic_get_stats(struct net_device *netdev)
 	net_stats->rx_bytes = stats->rx.rx_bytes_ok;
 	net_stats->rx_errors = stats->rx.rx_errors;
 	net_stats->multicast = stats->rx.rx_multicast_frames_ok;
+	net_stats->rx_over_errors = enic->rq_truncated_pkts;
 	net_stats->rx_crc_errors = enic->rq_bad_fcs;
-	net_stats->rx_dropped = stats->rx.rx_no_bufs;
+	net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop;
 
 	return net_stats;
 }
@@ -1029,8 +1030,12 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
 
 	if (packet_error) {
 
-		if (bytes_written > 0 && !fcs_ok)
-			enic->rq_bad_fcs++;
+		if (!fcs_ok) {
+			if (bytes_written > 0)
+				enic->rq_bad_fcs++;
+			else if (bytes_written == 0)
+				enic->rq_truncated_pkts++;
+		}
 
 		dev_kfree_skb_any(skb);