i40e/ethtool: support coalesce getting by queue

This patch implements get_per_queue_coalesce for i40e driver.
Signed-off-by: NKan Liang <kan.liang@intel.com>
Acked-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/i40e/i40e_ethtool.c

@@ -1925,6 +1925,12 @@ static int i40e_get_coalesce(struct net_device *netdev,
 	return __i40e_get_coalesce(netdev, ec, -1);
 }
 
+static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
+				       struct ethtool_coalesce *ec)
+{
+	return __i40e_get_coalesce(netdev, ec, queue);
+}
+
 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
 				   struct ethtool_coalesce *ec,
 				   int queue)
@@ -2914,6 +2920,7 @@ static const struct ethtool_ops i40e_ethtool_ops = {
 	.get_ts_info		= i40e_get_ts_info,
 	.get_priv_flags		= i40e_get_priv_flags,
 	.set_priv_flags		= i40e_set_priv_flags,
+	.get_per_queue_coalesce	= i40e_get_per_queue_coalesce,
 };
 
 void i40e_set_ethtool_ops(struct net_device *netdev)