netdevice: safe convert to netdev_priv() #part-1

We have some reasons to kill netdev->priv:
1. netdev->priv is equal to netdev_priv().
2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously
   netdev_priv() is more flexible than netdev->priv.
But we cann't kill netdev->priv, because so many drivers reference to it
directly.

This patch is a safe convert for netdev->priv to netdev_priv(netdev).
Since all of the netdev->priv is only for read.
But it is too big to be sent in one mail.
I split it to 4 parts and make every part smaller than 100,000 bytes,
which is max size allowed by vger.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index fee56a3..a610016 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -94,9 +94,9 @@
 };
 
 #define IXGBE_QUEUE_STATS_LEN \
-                ((((struct ixgbe_adapter *)netdev->priv)->num_tx_queues + \
-                 ((struct ixgbe_adapter *)netdev->priv)->num_rx_queues) * \
-                 (sizeof(struct ixgbe_queue_stats) / sizeof(u64)))
+	((((struct ixgbe_adapter *)netdev_priv(netdev))->num_tx_queues + \
+	((struct ixgbe_adapter *)netdev_priv(netdev))->num_rx_queues) * \
+	(sizeof(struct ixgbe_queue_stats) / sizeof(u64)))
 #define IXGBE_STATS_LEN (IXGBE_GLOBAL_STATS_LEN + IXGBE_QUEUE_STATS_LEN)
 #define IXGBE_GLOBAL_STATS_LEN ARRAY_SIZE(ixgbe_gstrings_stats)
 #define IXGBE_STATS_LEN (IXGBE_GLOBAL_STATS_LEN + IXGBE_QUEUE_STATS_LEN)