From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Fri, 27 Apr 2018 14:06:45 -0400
Subject: mlx4: Don't bother using skb_tx_hash in mlx4_en_select_queue
Patch-mainline: v4.18-rc1
Git-commit: b86629ebd5447c1e263d89be765ba6fd747c5e4d
References: bsc#1103989 FATE#326004

The code in the fallback path has supported XDP in conjunction with the Tx
traffic classification for TCs for over a year now. So instead of just
calling skb_tx_hash for every packet we are better off using the fallback
since that will record the Tx queue to the socket and then that can be used
instead of having to recompute the hash every time.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx4/en_tx.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
@@ -694,7 +694,7 @@ u16 mlx4_en_select_queue(struct net_devi
 	u16 rings_p_up = priv->num_tx_rings_p_up;
 
 	if (netdev_get_num_tc(dev))
-		return skb_tx_hash(dev, skb);
+		return fallback(dev, skb);
 
 	return fallback(dev, skb) % rings_p_up;
 }