netdev - [PATCH net-next] r8169: Support for byte queue limits

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Date:	Mon, 19 Dec 2011 11:09:33 +0100
From:	igorm@....rs
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, nic_swsd@...ltek.com, romieu@...zoreil.com,
	therbert@...gle.com, eric.dumazet@...il.com,
	Igor Maravic <igorm@....rs>
Subject: [PATCH net-next] r8169: Support for byte queue limits

From: Igor Maravic <igorm@....rs>

Changes to r8169 to use byte queue limits.

Signed-off-by: Igor Maravic <igorm@....rs>
---
 drivers/net/ethernet/realtek/r8169.c |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 36b2a4b..1a6a12a 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -5326,6 +5326,7 @@ static void rtl8169_tx_clear(struct rtl8169_private *tp)
 {
 	rtl8169_tx_clear_range(tp, tp->dirty_tx, NUM_TX_DESC);
 	tp->cur_tx = tp->dirty_tx = 0;
+	netdev_reset_queue(tp->dev);
 }
 
 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
@@ -5546,6 +5547,8 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb,
 
 	tp->cur_tx += frags + 1;
 
+	netdev_sent_queue(dev, skb->len);
+
 	wmb();
 
 	RTL_W8(TxPoll, NPQ);
@@ -5624,6 +5627,8 @@ static void rtl8169_tx_interrupt(struct net_device *dev,
 				 void __iomem *ioaddr)
 {
 	unsigned int dirty_tx, tx_left;
+	unsigned int bytes_compl = 0;
+	int tx_compl = 0;
 
 	dirty_tx = tp->dirty_tx;
 	smp_rmb();
@@ -5642,14 +5647,18 @@ static void rtl8169_tx_interrupt(struct net_device *dev,
 		rtl8169_unmap_tx_skb(&tp->pci_dev->dev, tx_skb,
 				     tp->TxDescArray + entry);
 		if (status & LastFrag) {
-			dev->stats.tx_packets++;
-			dev->stats.tx_bytes += tx_skb->skb->len;
+			tx_compl++;
+			bytes_compl += tx_skb->skb->len;
 			dev_kfree_skb(tx_skb->skb);
 			tx_skb->skb = NULL;
 		}
 		dirty_tx++;
 		tx_left--;
 	}
+	dev->stats.tx_packets += tx_compl;
+	dev->stats.tx_bytes += bytes_compl;
+
+	netdev_completed_queue(dev, tx_compl, bytes_compl);
 
 	if (tp->dirty_tx != dirty_tx) {
 		tp->dirty_tx = dirty_tx;
-- 
1.7.5.4

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