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33 lines
1.2 KiB
Diff
33 lines
1.2 KiB
Diff
From 74ec605a11b7ecf68036c3f086f684bbe7381353 Mon Sep 17 00:00:00 2001
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From: Heiner Kallweit <hkallweit1@gmail.com>
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Date: Wed, 30 Nov 2022 23:30:15 +0100
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Subject: [PATCH 4/4] r8169: enable GRO software interrupt coalescing per
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default
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There are reports about r8169 not reaching full line speed on certain
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systems (e.g. SBC's) with a 2.5Gbps link.
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There was a time when hardware interrupt coalescing was enabled per
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default, but this was changed due to ASPM-related issues on few systems.
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So let's use software interrupt coalescing instead and enable it
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using new function netdev_sw_irq_coalesce_default_on().
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Even with these conservative settings interrupt load on my 1Gbps test
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system reduced significantly.
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Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/ethernet/realtek/r8169_main.c | 2 ++
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1 file changed, 2 insertions(+)
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--- a/drivers/net/ethernet/realtek/r8169_main.c
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+++ b/drivers/net/ethernet/realtek/r8169_main.c
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@@ -5283,6 +5283,8 @@ static int rtl_init_one(struct pci_dev *
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dev->hw_features |= NETIF_F_RXALL;
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dev->hw_features |= NETIF_F_RXFCS;
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+ netdev_sw_irq_coalesce_default_on(dev);
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+
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/* configure chip for default features */
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rtl8169_set_features(dev, dev->features);
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