1 From 4c59b0f5543db80abbbe9efdd9b25e7899501db5 Mon Sep 17 00:00:00 2001
2 From: Sieng Piaw Liew <liew.s.piaw@gmail.com>
3 Date: Wed, 6 Jan 2021 22:42:03 +0800
4 Subject: [PATCH 2/7] bcm63xx_enet: add BQL support
6 Add Byte Queue Limits support to reduce/remove bufferbloat in
9 Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
10 Acked-by: Florian Fainelli <f.fainelli@gmail.com>
11 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
13 drivers/net/ethernet/broadcom/bcm63xx_enet.c | 9 +++++++++
14 1 file changed, 9 insertions(+)
16 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
17 +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
18 @@ -418,9 +418,11 @@ static int bcm_enet_receive_queue(struct
19 static int bcm_enet_tx_reclaim(struct net_device *dev, int force)
21 struct bcm_enet_priv *priv;
25 priv = netdev_priv(dev);
29 while (priv->tx_desc_count < priv->tx_ring_size) {
30 @@ -457,10 +459,13 @@ static int bcm_enet_tx_reclaim(struct ne
31 if (desc->len_stat & DMADESC_UNDER_MASK)
32 dev->stats.tx_errors++;
39 + netdev_completed_queue(dev, released, bytes);
41 if (netif_queue_stopped(dev) && released)
42 netif_wake_queue(dev);
44 @@ -627,6 +632,8 @@ bcm_enet_start_xmit(struct sk_buff *skb,
45 desc->len_stat = len_stat;
48 + netdev_sent_queue(dev, skb->len);
51 enet_dmac_writel(priv, priv->dma_chan_en_mask,
52 ENETDMAC_CHANCFG, priv->tx_chan);
53 @@ -1170,6 +1177,7 @@ static int bcm_enet_stop(struct net_devi
54 kdev = &priv->pdev->dev;
56 netif_stop_queue(dev);
57 + netdev_reset_queue(dev);
58 napi_disable(&priv->napi);
60 phy_stop(dev->phydev);
61 @@ -2343,6 +2351,7 @@ static int bcm_enetsw_stop(struct net_de
63 del_timer_sync(&priv->swphy_poll);
64 netif_stop_queue(dev);
65 + netdev_reset_queue(dev);
66 napi_disable(&priv->napi);
67 del_timer_sync(&priv->rx_timeout);