ixgb: use DPRINTK and msglvl, and ethtool to control it

Use DPRINTK and msglvl, and ethtool to control it. Add proper names
to netdev structs and mappings.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>

diff --git a/drivers/net/ixgb/ixgb_ethtool.c b/drivers/net/ixgb/ixgb_ethtool.c
index f6baf28..560b4b6 100644
--- a/drivers/net/ixgb/ixgb_ethtool.c
+++ b/drivers/net/ixgb/ixgb_ethtool.c
@@ -250,6 +250,19 @@
 } 
 #endif /* NETIF_F_TSO */
 
+static uint32_t
+ixgb_get_msglevel(struct net_device *netdev)
+{
+	struct ixgb_adapter *adapter = netdev->priv;
+	return adapter->msg_enable;
+}
+
+static void
+ixgb_set_msglevel(struct net_device *netdev, uint32_t data)
+{
+	struct ixgb_adapter *adapter = netdev->priv;
+	adapter->msg_enable = data;
+}
 #define IXGB_GET_STAT(_A_, _R_) _A_->stats._R_
 
 static int 
@@ -709,6 +722,8 @@
 	.set_tx_csum = ixgb_set_tx_csum,
 	.get_sg	= ethtool_op_get_sg,
 	.set_sg	= ethtool_op_set_sg,
+	.get_msglevel = ixgb_get_msglevel,
+	.set_msglevel = ixgb_set_msglevel,
 #ifdef NETIF_F_TSO
 	.get_tso = ethtool_op_get_tso,
 	.set_tso = ixgb_set_tso,