56 lines
1.8 KiB
Diff
56 lines
1.8 KiB
Diff
From 9cbfea02c1dbee0afb9128f065e6e793672b9ff7 Mon Sep 17 00:00:00 2001
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From: Sieng Piaw Liew <liew.s.piaw@gmail.com>
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Date: Wed, 6 Jan 2021 22:42:02 +0800
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Subject: [PATCH 1/7] bcm63xx_enet: batch process rx path
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Use netif_receive_skb_list to batch process rx skb.
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Tested on BCM6328 320 MHz using iperf3 -M 512, increasing performance
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by 12.5%.
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Before:
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[ ID] Interval Transfer Bandwidth Retr
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[ 4] 0.00-30.00 sec 120 MBytes 33.7 Mbits/sec 277 sender
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[ 4] 0.00-30.00 sec 120 MBytes 33.5 Mbits/sec receiver
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After:
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[ ID] Interval Transfer Bandwidth Retr
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[ 4] 0.00-30.00 sec 136 MBytes 37.9 Mbits/sec 203 sender
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[ 4] 0.00-30.00 sec 135 MBytes 37.7 Mbits/sec receiver
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Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
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Acked-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/ethernet/broadcom/bcm63xx_enet.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
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+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
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@@ -298,10 +298,12 @@ static void bcm_enet_refill_rx_timer(str
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static int bcm_enet_receive_queue(struct net_device *dev, int budget)
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{
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struct bcm_enet_priv *priv;
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+ struct list_head rx_list;
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struct device *kdev;
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int processed;
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priv = netdev_priv(dev);
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+ INIT_LIST_HEAD(&rx_list);
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kdev = &priv->pdev->dev;
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processed = 0;
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@@ -392,10 +394,12 @@ static int bcm_enet_receive_queue(struct
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skb->protocol = eth_type_trans(skb, dev);
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dev->stats.rx_packets++;
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dev->stats.rx_bytes += len;
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- netif_receive_skb(skb);
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+ list_add_tail(&skb->list, &rx_list);
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} while (--budget > 0);
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+ netif_receive_skb_list(&rx_list);
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+
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if (processed || !priv->rx_desc_count) {
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bcm_enet_refill_rx(dev);
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