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ramips/mediatek: enable threaded NAPI in the ethernet driver
Improves performance, especially under load Signed-off-by: Felix Fietkau <nbd@nbd.name>
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target/linux/generic/pending-5.10/702-net-ethernet-mtk_eth_soc-enable-threaded-NAPI.patch
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,41 @@ | ||
From: Felix Fietkau <nbd@nbd.name> | ||
Date: Mon, 21 Mar 2022 20:39:59 +0100 | ||
Subject: [PATCH] net: ethernet: mtk_eth_soc: enable threaded NAPI | ||
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This can improve performance under load by ensuring that NAPI processing is | ||
not pinned on CPU 0. | ||
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Signed-off-by: Felix Fietkau <nbd@nbd.name> | ||
--- | ||
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c | ||
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c | ||
@@ -2171,8 +2171,8 @@ static irqreturn_t mtk_handle_irq_rx(int | ||
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eth->rx_events++; | ||
if (likely(napi_schedule_prep(ð->rx_napi))) { | ||
- __napi_schedule(ð->rx_napi); | ||
mtk_rx_irq_disable(eth, MTK_RX_DONE_INT); | ||
+ __napi_schedule(ð->rx_napi); | ||
} | ||
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return IRQ_HANDLED; | ||
@@ -2184,8 +2184,8 @@ static irqreturn_t mtk_handle_irq_tx(int | ||
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eth->tx_events++; | ||
if (likely(napi_schedule_prep(ð->tx_napi))) { | ||
- __napi_schedule(ð->tx_napi); | ||
mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); | ||
+ __napi_schedule(ð->tx_napi); | ||
} | ||
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return IRQ_HANDLED; | ||
@@ -3229,6 +3229,8 @@ static int mtk_probe(struct platform_dev | ||
* for NAPI to work | ||
*/ | ||
init_dummy_netdev(ð->dummy_dev); | ||
+ eth->dummy_dev.threaded = 1; | ||
+ strcpy(eth->dummy_dev.name, "mtk_eth"); | ||
netif_napi_add(ð->dummy_dev, ð->tx_napi, mtk_napi_tx, | ||
MTK_NAPI_WEIGHT); | ||
netif_napi_add(ð->dummy_dev, ð->rx_napi, mtk_napi_rx, |
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