3 files changed, 38 insertions, 10 deletions

diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h
index 154c5acc6fce..b2c98dea9eed 100644
--- a/drivers/net/igb/igb.h
+++ b/drivers/net/igb/igb.h
@@ -137,11 +137,17 @@ struct igb_buffer {
 	};
 };
 
-struct igb_queue_stats {
+struct igb_tx_queue_stats {
 	u64 packets;
 	u64 bytes;
 };
 
+struct igb_rx_queue_stats {
+	u64 packets;
+	u64 bytes;
+	u64 drops;
+};
+
 struct igb_ring {
 	struct igb_adapter *adapter; /* backlink */
 	void *desc;                  /* descriptor ring memory */
@@ -167,12 +173,13 @@ struct igb_ring {
 	union {
 		/* TX */
 		struct {
-			struct igb_queue_stats tx_stats;
+			struct igb_tx_queue_stats tx_stats;
 			bool detect_tx_hung;
 		};
 		/* RX */
 		struct {
-			struct igb_queue_stats rx_stats;
+			struct igb_rx_queue_stats rx_stats;
+			u64 rx_queue_drops;
 			struct napi_struct napi;
 			int set_itr;
 			struct igb_ring *buddy;
diff --git a/drivers/net/igb/igb_ethtool.c b/drivers/net/igb/igb_ethtool.c
index b8551a57dd3f..2ae98f91372e 100644
--- a/drivers/net/igb/igb_ethtool.c
+++ b/drivers/net/igb/igb_ethtool.c
@@ -96,9 +96,10 @@ static const struct igb_stats igb_gstrings_stats[] = {
 };
 
 #define IGB_QUEUE_STATS_LEN \
-	((((struct igb_adapter *)netdev_priv(netdev))->num_rx_queues + \
-	 ((struct igb_adapter *)netdev_priv(netdev))->num_tx_queues) * \
-	(sizeof(struct igb_queue_stats) / sizeof(u64)))
+	(((((struct igb_adapter *)netdev_priv(netdev))->num_rx_queues)* \
+	  (sizeof(struct igb_rx_queue_stats) / sizeof(u64))) + \
+	 ((((struct igb_adapter *)netdev_priv(netdev))->num_tx_queues) * \
+	  (sizeof(struct igb_tx_queue_stats) / sizeof(u64))))
 #define IGB_GLOBAL_STATS_LEN	\
 	sizeof(igb_gstrings_stats) / sizeof(struct igb_stats)
 #define IGB_STATS_LEN (IGB_GLOBAL_STATS_LEN + IGB_QUEUE_STATS_LEN)
@@ -1960,7 +1961,8 @@ static void igb_get_ethtool_stats(struct net_device *netdev,
 {
 	struct igb_adapter *adapter = netdev_priv(netdev);
 	u64 *queue_stat;
-	int stat_count = sizeof(struct igb_queue_stats) / sizeof(u64);
+	int stat_count_tx = sizeof(struct igb_tx_queue_stats) / sizeof(u64);
+	int stat_count_rx = sizeof(struct igb_rx_queue_stats) / sizeof(u64);
 	int j;
 	int i;
 
@@ -1973,14 +1975,14 @@ static void igb_get_ethtool_stats(struct net_device *netdev,
 	for (j = 0; j < adapter->num_tx_queues; j++) {
 		int k;
 		queue_stat = (u64 *)&adapter->tx_ring[j].tx_stats;
-		for (k = 0; k < stat_count; k++)
+		for (k = 0; k < stat_count_tx; k++)
 			data[i + k] = queue_stat[k];
 		i += k;
 	}
 	for (j = 0; j < adapter->num_rx_queues; j++) {
 		int k;
 		queue_stat = (u64 *)&adapter->rx_ring[j].rx_stats;
-		for (k = 0; k < stat_count; k++)
+		for (k = 0; k < stat_count_rx; k++)
 			data[i + k] = queue_stat[k];
 		i += k;
 	}
@@ -2014,6 +2016,8 @@ static void igb_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 			p += ETH_GSTRING_LEN;
 			sprintf(p, "rx_queue_%u_bytes", i);
 			p += ETH_GSTRING_LEN;
+			sprintf(p, "rx_queue_%u_drops", i);
+			p += ETH_GSTRING_LEN;
 		}
 /*		BUG_ON(p - data != IGB_STATS_LEN * ETH_GSTRING_LEN); */
 		break;
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 2ec98091948b..4ae81331dca5 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -3588,8 +3588,25 @@ void igb_update_stats(struct igb_adapter *adapter)
 
 	/* Rx Errors */
 
+	if (hw->mac.type != e1000_82575) {
+		u32 rqdpc_tmp;
+		int i;
+		/* Read out drops stats per RX queue.  Notice RQDPC (Receive
+		 * Queue Drop Packet Count) stats only gets incremented, if
+		 * the DROP_EN but it set (in the SRRCTL register for that
+		 * queue).  If DROP_EN bit is NOT set, then the some what
+		 * equivalent count is stored in RNBC (not per queue basis).
+		 * Also note the drop count is due to lack of available
+		 * descriptors.
+		 */
+		for (i = 0; i < adapter->num_rx_queues; i++) {
+			rqdpc_tmp = rd32(E1000_RQDPC(i)) & 0xFFF;
+			adapter->rx_ring[i].rx_stats.drops += rqdpc_tmp;
+		}
+	}
+
 	/* RLEC on some newer hardware can be incorrect so build
-	* our own version based on RUC and ROC */
+	 * our own version based on RUC and ROC */
 	adapter->net_stats.rx_errors = adapter->stats.rxerrc +
 		adapter->stats.crcerrs + adapter->stats.algnerrc +
 		adapter->stats.ruc + adapter->stats.roc +