net: txgbe: add ethtool stats support

Support to show ethtool statistics.
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://lore.kernel.org/r/20231011091906.70486-3-jiawenwu@trustnetic.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c

@@ -39,6 +39,11 @@ static const struct ethtool_ops txgbe_ethtool_ops = {
 	.get_link		= ethtool_op_get_link,
 	.get_link_ksettings	= txgbe_get_link_ksettings,
 	.set_link_ksettings	= txgbe_set_link_ksettings,
+	.get_sset_count		= wx_get_sset_count,
+	.get_strings		= wx_get_strings,
+	.get_ethtool_stats	= wx_get_ethtool_stats,
+	.get_eth_mac_stats	= wx_get_mac_stats,
+	.get_pause_stats	= wx_get_pause_stats,
 };
 
 void txgbe_set_ethtool_ops(struct net_device *netdev)

drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c

@@ -306,6 +306,8 @@ int txgbe_reset_hw(struct wx *wx)
 
 	txgbe_reset_misc(wx);
 
+	wx_clear_hw_cntrs(wx);
+
 	/* Store the permanent mac address */
 	wx_get_mac_addr(wx, wx->mac.perm_addr);
 

drivers/net/ethernet/wangxun/txgbe/txgbe_main.c

@@ -286,6 +286,8 @@ static void txgbe_disable_device(struct wx *wx)
 
 	/* Disable the Tx DMA engine */
 	wr32m(wx, WX_TDM_CTL, WX_TDM_CTL_TE, 0);
+
+	wx_update_stats(wx);
 }
 
 static void txgbe_down(struct wx *wx)