From d92060bc69233a8175a0c2bfa0d2bce123cace2d Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Sat, 20 Oct 2018 12:25:27 +0200 Subject: [PATCH] r8169: add support for Byte Queue Limits MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch is basically a resubmit of 1e918876853a ("r8169: add support for Byte Queue Limits") which was reverted later. The problems causing the revert seem to have been fixed in the meantime. Only change to the original patch is that the call to netdev_reset_queue was moved to rtl8169_tx_clear. The Tested-by refers to a system using the RTL8168evl chip version. Signed-off-by: Florian Westphal Signed-off-by: Heiner Kallweit Tested-by: Holger Hoffstätte Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index 114bd9e54924..006b0aa8cec3 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -5851,6 +5851,7 @@ 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 rtl_reset_work(struct rtl8169_private *tp) @@ -6153,6 +6154,8 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, txd->opts2 = cpu_to_le32(opts[1]); + netdev_sent_queue(dev, skb->len); + skb_tx_timestamp(skb); /* Force memory writes to complete before releasing descriptor */ @@ -6251,7 +6254,7 @@ static void rtl8169_pcierr_interrupt(struct net_device *dev) static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp) { - unsigned int dirty_tx, tx_left; + unsigned int dirty_tx, tx_left, bytes_compl = 0, pkts_compl = 0; dirty_tx = tp->dirty_tx; smp_rmb(); @@ -6275,10 +6278,8 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp) rtl8169_unmap_tx_skb(tp_to_dev(tp), tx_skb, tp->TxDescArray + entry); if (status & LastFrag) { - u64_stats_update_begin(&tp->tx_stats.syncp); - tp->tx_stats.packets++; - tp->tx_stats.bytes += tx_skb->skb->len; - u64_stats_update_end(&tp->tx_stats.syncp); + pkts_compl++; + bytes_compl += tx_skb->skb->len; dev_consume_skb_any(tx_skb->skb); tx_skb->skb = NULL; } @@ -6287,6 +6288,13 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp) } if (tp->dirty_tx != dirty_tx) { + netdev_completed_queue(dev, pkts_compl, bytes_compl); + + u64_stats_update_begin(&tp->tx_stats.syncp); + tp->tx_stats.packets += pkts_compl; + tp->tx_stats.bytes += bytes_compl; + u64_stats_update_end(&tp->tx_stats.syncp); + tp->dirty_tx = dirty_tx; /* Sync with rtl8169_start_xmit: * - publish dirty_tx ring index (write barrier)