38 lines
1.4 KiB
Diff
38 lines
1.4 KiB
Diff
From 0000000000000000000000000000000000000000 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: Mon, 30 Nov 2020 11:07:47 +0800
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Subject: [PATCH] bcm63xx: enetsw: switch to netdev_alloc_skb_ip_align
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Increases packet processing performance by 30%.
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Tested on BCM6328 320 MHz and iperf3 -M 512 for packet/sec performance.
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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 155 MBytes 43.3 Mbits/sec 354 sender
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[ 4] 0.00-30.00 sec 154 MBytes 43.1 Mbits/sec receiver
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Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
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---
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drivers/net/ethernet/broadcom/bcm63xx_enet.c | 6 +++++-
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1 file changed, 4 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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@@ -239,7 +239,10 @@ static int bcm_enet_refill_rx(struct net
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desc = &priv->rx_desc_cpu[desc_idx];
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if (!priv->rx_skb[desc_idx]) {
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- skb = netdev_alloc_skb(dev, priv->rx_skb_size);
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+ if (priv->enet_is_sw)
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+ skb = netdev_alloc_skb_ip_align(dev, priv->rx_skb_size);
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+ else
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+ skb = netdev_alloc_skb(dev, priv->rx_skb_size);
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if (!skb)
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break;
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priv->rx_skb[desc_idx] = skb;
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