qlcnic: additional driver statistics.

Statistics added for lro/lso bytes, count for tx stop queue and
wake queue and skb alloc failure count.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 665e8e5..fc72156 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -118,6 +118,7 @@
 	if (qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH) {
 		netif_stop_queue(adapter->netdev);
 		smp_mb();
+		adapter->stats.xmit_off++;
 	}
 }
 
@@ -1385,6 +1386,7 @@
 	int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
 	struct cmd_desc_type0 *hwdesc;
 	struct vlan_ethhdr *vh;
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
 
 	if (protocol == cpu_to_be16(ETH_P_8021Q)) {
 
@@ -1494,6 +1496,7 @@
 
 	tx_ring->producer = producer;
 	barrier();
+	adapter->stats.lso_frames++;
 }
 
 static int
@@ -1573,6 +1576,7 @@
 
 	if (unlikely(no_of_desc + 2 > qlcnic_tx_avail(tx_ring))) {
 		netif_stop_queue(netdev);
+		adapter->stats.xmit_off++;
 		return NETDEV_TX_BUSY;
 	}
 
@@ -1880,6 +1884,7 @@
 			if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
 				netif_wake_queue(netdev);
 				adapter->tx_timeo_cnt = 0;
+				adapter->stats.xmit_on++;
 			}
 			__netif_tx_unlock(tx_ring->txq);
 		}