netdev - [PATCH] net: bcmgenet: fix throughtput regression with TSO autosizing

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Message-Id: <1424948758-48244-1-git-send-email-jaedon.shin@gmail.com>
Date:	Thu, 26 Feb 2015 20:05:58 +0900
From:	Jaedon Shin <jaedon.shin@...il.com>
To:	Florian Fainelli <f.fainelli@...il.com>
Cc:	netdev@...r.kernel.org, Jaedon Shin <jaedon.shin@...il.com>
Subject: [PATCH] net: bcmgenet: fix throughtput regression with TSO autosizing

This patch prevents the performance degradation of xmit after
605ad7f ("tcp: refine TSO autosizing").

Signed-off-by: Jaedon Shin <jaedon.shin@...il.com>
---
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index ff83c46b..87eeff0 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1310,6 +1310,9 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
 out:
 	spin_unlock_irqrestore(&ring->lock, flags);
 
+	if (index != DESC_INDEX)
+		skb_orphan(skb);
+
 	return ret;
 }
 
-- 
2.3.0

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