[PATCH net-next] net/mlx4_en: mlx4_en_netpoll() should schedule TX, not RX

[Eric Dumazet]

From: Eric Dumazet <eduma...@google.com>

I am not sure mlx4_en_netpoll() is doing anything useful right now.

mlx4 has different NAPI structures for RX and TX, and netpoll only wants
to drain TX queues.

Lets schedule NAPI polls on TX, not RX.

Signed-off-by: Eric Dumazet <eduma...@google.com>
Cc: Maciej Żenczykowski <m...@google.com>
Cc: Eric W. Biederman <ebied...@xmission.com>
---
Totally untested patch, I would appreciate some feedback before merge,
thanks !

 drivers/net/ethernet/mellanox/mlx4/en_netdev.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c 
b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 19ceced6736c..973391bfe286 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -1197,8 +1197,8 @@ static void mlx4_en_netpoll(struct net_device *dev)
        struct mlx4_en_cq *cq;
        int i;
 
-       for (i = 0; i < priv->rx_ring_num; i++) {
-               cq = priv->rx_cq[i];
+       for (i = 0; i < priv->tx_ring_num; i++) {
+               cq = priv->tx_cq[i];
                napi_schedule(&cq->napi);
        }
 }