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0787d95f06
The purpose of resetting the TX queue is to reset the
byte and packet count as well as to clear the software
flow control XOFF bit.
MediaTek developers pointed out that netdev_reset_queue would only
resets queue 0 of the network device.
Queues that are not reset may cause unexpected issues.
Packets may stop being sent after reset and "transmit timeout" log may
be displayed.
Import fix from MediaTek's SDK to resolve this issue.
Link: 5746a94456
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
50 lines
1.6 KiB
Diff
50 lines
1.6 KiB
Diff
From 7d41a5a8e9c91cc6bb011dd953570738583dd091 Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Wed, 18 Sep 2024 02:01:01 +0100
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Subject: [PATCH] net: ethernet: mtk_eth_soc: reset all TX queues on DMA free
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The purpose of resetting the TX queue is to reset the
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byte and packet count as well as to clear the software
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flow control XOFF bit.
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MediaTek developers pointed out that netdev_reset_queue would only
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resets queue 0 of the network device.
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Queues that are not reset may cause unexpected issues.
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Packets may stop being sent after reset and "transmit timeout" log may
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be displayed.
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Import fix from MediaTek's SDK to resolve this issue.
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/net/ethernet/mediatek/mtk_eth_soc.c | 18 ++++++++++++++----
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1 file changed, 14 insertions(+), 4 deletions(-)
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@@ -3135,11 +3135,19 @@ static int mtk_dma_init(struct mtk_eth *
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static void mtk_dma_free(struct mtk_eth *eth)
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{
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const struct mtk_soc_data *soc = eth->soc;
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- int i;
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+ int i, j, txqs = 1;
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+
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+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
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+ txqs = MTK_QDMA_NUM_QUEUES;
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+
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+ for (i = 0; i < MTK_MAX_DEVS; i++) {
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+ if (!eth->netdev[i])
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+ continue;
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+
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+ for (j = 0; j < txqs; j++)
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+ netdev_tx_reset_queue(netdev_get_tx_queue(eth->netdev[i], j));
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+ }
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- for (i = 0; i < MTK_MAX_DEVS; i++)
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- if (eth->netdev[i])
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- netdev_reset_queue(eth->netdev[i]);
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if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && eth->scratch_ring) {
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dma_free_coherent(eth->dma_dev,
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MTK_QDMA_RING_SIZE * soc->tx.desc_size,
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