netdev - [PATCH net-next] bnx2x: use XPS if possible for bnx2x_select

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Date:	Fri, 31 May 2013 17:32:55 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>,
	"govindarajulu.v" <govindarajulu90@...il.com>,
	Havard Skinnemoen <hskinnemoen@...gle.com>,
	Eilon Greenstein <eilong@...adcom.com>
Subject: [PATCH net-next] bnx2x: use XPS if possible for bnx2x_select_queue
 instead of pure hash

From: Eric Dumazet <edumazet@...gle.com>

The bnx2x_select_queue() was using __skb_tx_hash() to select the
transmit queue, totally ignoring XPS settings, while XPS can help
performance quite significantly, so change the bnx2x_select_queue()
to use __dev_pick_tx() instead which will use XPS if configured.
 
Based on patches from Ying Cai and Havard Skinnemoen

Reported-by: govindarajulu.v <govindarajulu90@...il.com>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: Havard Skinnemoen <hskinnemoen@...gle.com>
Cc: Ying Cai <ycai@...gle.com>
Cc: Eilon Greenstein <eilong@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index c80f1d2..3651f6d 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -1829,7 +1829,7 @@ u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb)
 	}
 
 	/* select a non-FCoE queue */
-	return __skb_tx_hash(dev, skb, BNX2X_NUM_ETH_QUEUES(bp));
+	return __netdev_pick_tx(dev, skb) % BNX2X_NUM_ETH_QUEUES(bp);
 }
 
 void bnx2x_set_num_queues(struct bnx2x *bp)


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