ixgb: Use the instance of net_device_stats from net_device.

Since net_device has an instance of net_device_stats,
we can remove the instance of this from the private adapter structure.

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 45 insertions, 46 deletions

diff --git a/drivers/net/ixgb/ixgb.h b/drivers/net/ixgb/ixgb.h
index d85717e3022a..e95d9b6f1f2d 100644
--- a/drivers/net/ixgb/ixgb.h
+++ b/drivers/net/ixgb/ixgb.h
@@ -183,7 +183,6 @@ struct ixgb_adapter {
         struct napi_struct napi;
         struct net_device *netdev;
         struct pci_dev *pdev;
-        struct net_device_stats net_stats;
 
         /* structs defined in ixgb_hw.h */
         struct ixgb_hw hw;
diff --git a/drivers/net/ixgb/ixgb_ethtool.c b/drivers/net/ixgb/ixgb_ethtool.c
index 288ee1d0f431..deeb25da0702 100644
--- a/drivers/net/ixgb/ixgb_ethtool.c
+++ b/drivers/net/ixgb/ixgb_ethtool.c
@@ -42,30 +42,32 @@ struct ixgb_stats {
 
 #define IXGB_STAT(m) FIELD_SIZEOF(struct ixgb_adapter, m), \
                       offsetof(struct ixgb_adapter, m)
+#define IXGB_NETDEV_STAT(m) FIELD_SIZEOF(struct net_device, m), \
+                      offsetof(struct net_device, m)
 static struct ixgb_stats ixgb_gstrings_stats[] = {
-        {"rx_packets", IXGB_STAT(net_stats.rx_packets)},
-        {"tx_packets", IXGB_STAT(net_stats.tx_packets)},
-        {"rx_bytes", IXGB_STAT(net_stats.rx_bytes)},
-        {"tx_bytes", IXGB_STAT(net_stats.tx_bytes)},
-        {"rx_errors", IXGB_STAT(net_stats.rx_errors)},
-        {"tx_errors", IXGB_STAT(net_stats.tx_errors)},
-        {"rx_dropped", IXGB_STAT(net_stats.rx_dropped)},
-        {"tx_dropped", IXGB_STAT(net_stats.tx_dropped)},
-        {"multicast", IXGB_STAT(net_stats.multicast)},
-        {"collisions", IXGB_STAT(net_stats.collisions)},
-
-/*      { "rx_length_errors", IXGB_STAT(net_stats.rx_length_errors) },  */
-        {"rx_over_errors", IXGB_STAT(net_stats.rx_over_errors)},
-        {"rx_crc_errors", IXGB_STAT(net_stats.rx_crc_errors)},
-        {"rx_frame_errors", IXGB_STAT(net_stats.rx_frame_errors)},
+        {"rx_packets", IXGB_NETDEV_STAT(stats.rx_packets)},
+        {"tx_packets", IXGB_NETDEV_STAT(stats.tx_packets)},
+        {"rx_bytes", IXGB_NETDEV_STAT(stats.rx_bytes)},
+        {"tx_bytes", IXGB_NETDEV_STAT(stats.tx_bytes)},
+        {"rx_errors", IXGB_NETDEV_STAT(stats.rx_errors)},
+        {"tx_errors", IXGB_NETDEV_STAT(stats.tx_errors)},
+        {"rx_dropped", IXGB_NETDEV_STAT(stats.rx_dropped)},
+        {"tx_dropped", IXGB_NETDEV_STAT(stats.tx_dropped)},
+        {"multicast", IXGB_NETDEV_STAT(stats.multicast)},
+        {"collisions", IXGB_NETDEV_STAT(stats.collisions)},
+
+/*      { "rx_length_errors", IXGB_NETDEV_STAT(stats.rx_length_errors) },       */
+        {"rx_over_errors", IXGB_NETDEV_STAT(stats.rx_over_errors)},
+        {"rx_crc_errors", IXGB_NETDEV_STAT(stats.rx_crc_errors)},
+        {"rx_frame_errors", IXGB_NETDEV_STAT(stats.rx_frame_errors)},
         {"rx_no_buffer_count", IXGB_STAT(stats.rnbc)},
-        {"rx_fifo_errors", IXGB_STAT(net_stats.rx_fifo_errors)},
-        {"rx_missed_errors", IXGB_STAT(net_stats.rx_missed_errors)},
-        {"tx_aborted_errors", IXGB_STAT(net_stats.tx_aborted_errors)},
-        {"tx_carrier_errors", IXGB_STAT(net_stats.tx_carrier_errors)},
-        {"tx_fifo_errors", IXGB_STAT(net_stats.tx_fifo_errors)},
-        {"tx_heartbeat_errors", IXGB_STAT(net_stats.tx_heartbeat_errors)},
-        {"tx_window_errors", IXGB_STAT(net_stats.tx_window_errors)},
+        {"rx_fifo_errors", IXGB_NETDEV_STAT(stats.rx_fifo_errors)},
+        {"rx_missed_errors", IXGB_NETDEV_STAT(stats.rx_missed_errors)},
+        {"tx_aborted_errors", IXGB_NETDEV_STAT(stats.tx_aborted_errors)},
+        {"tx_carrier_errors", IXGB_NETDEV_STAT(stats.tx_carrier_errors)},
+        {"tx_fifo_errors", IXGB_NETDEV_STAT(stats.tx_fifo_errors)},
+        {"tx_heartbeat_errors", IXGB_NETDEV_STAT(stats.tx_heartbeat_errors)},
+        {"tx_window_errors", IXGB_NETDEV_STAT(stats.tx_window_errors)},
         {"tx_deferred_ok", IXGB_STAT(stats.dc)},
         {"tx_timeout_count", IXGB_STAT(tx_timeout_count) },
         {"tx_restart_queue", IXGB_STAT(restart_queue) },
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index 8aa44dca57eb..f9f633c134bd 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -1537,9 +1537,7 @@ ixgb_tx_timeout_task(struct work_struct *work)
 static struct net_device_stats *
 ixgb_get_stats(struct net_device *netdev)
 {
-        struct ixgb_adapter *adapter = netdev_priv(netdev);
-
-        return &adapter->net_stats;
+        return &netdev->stats;
 }
 
 /**
@@ -1676,16 +1674,16 @@ ixgb_update_stats(struct ixgb_adapter *adapter)
 
         /* Fill out the OS statistics structure */
 
-        adapter->net_stats.rx_packets = adapter->stats.gprcl;
-        adapter->net_stats.tx_packets = adapter->stats.gptcl;
-        adapter->net_stats.rx_bytes = adapter->stats.gorcl;
-        adapter->net_stats.tx_bytes = adapter->stats.gotcl;
-        adapter->net_stats.multicast = adapter->stats.mprcl;
-        adapter->net_stats.collisions = 0;
+        netdev->stats.rx_packets = adapter->stats.gprcl;
+        netdev->stats.tx_packets = adapter->stats.gptcl;
+        netdev->stats.rx_bytes = adapter->stats.gorcl;
+        netdev->stats.tx_bytes = adapter->stats.gotcl;
+        netdev->stats.multicast = adapter->stats.mprcl;
+        netdev->stats.collisions = 0;
 
         /* ignore RLEC as it reports errors for padded (<64bytes) frames
          * with a length in the type/len field */
-        adapter->net_stats.rx_errors =
+        netdev->stats.rx_errors =
             /* adapter->stats.rnbc + */ adapter->stats.crcerrs +
             adapter->stats.ruc +
             adapter->stats.roc /*+ adapter->stats.rlec */  +
@@ -1693,21 +1691,21 @@ ixgb_update_stats(struct ixgb_adapter *adapter)
             adapter->stats.ecbc + adapter->stats.mpc;
 
         /* see above
-         * adapter->net_stats.rx_length_errors = adapter->stats.rlec;
+         * netdev->stats.rx_length_errors = adapter->stats.rlec;
          */
 
-        adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
-        adapter->net_stats.rx_fifo_errors = adapter->stats.mpc;
-        adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
-        adapter->net_stats.rx_over_errors = adapter->stats.mpc;
-
-        adapter->net_stats.tx_errors = 0;
-        adapter->net_stats.rx_frame_errors = 0;
-        adapter->net_stats.tx_aborted_errors = 0;
-        adapter->net_stats.tx_carrier_errors = 0;
-        adapter->net_stats.tx_fifo_errors = 0;
-        adapter->net_stats.tx_heartbeat_errors = 0;
-        adapter->net_stats.tx_window_errors = 0;
+        netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
+        netdev->stats.rx_fifo_errors = adapter->stats.mpc;
+        netdev->stats.rx_missed_errors = adapter->stats.mpc;
+        netdev->stats.rx_over_errors = adapter->stats.mpc;
+
+        netdev->stats.tx_errors = 0;
+        netdev->stats.rx_frame_errors = 0;
+        netdev->stats.tx_aborted_errors = 0;
+        netdev->stats.tx_carrier_errors = 0;
+        netdev->stats.tx_fifo_errors = 0;
+        netdev->stats.tx_heartbeat_errors = 0;
+        netdev->stats.tx_window_errors = 0;
 }
 
 #define IXGB_MAX_INTR 10