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9131cb44ff
Introduce EN7581 SoC support with currently rfb board supported. This is a new 64bit SoC from Airoha that is currently almost fully supported upstream with only the DTS missing. Setting source-only waiting for the full upstream support to be completed. Link: https://github.com/openwrt/openwrt/pull/16730 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
46 lines
1.6 KiB
Diff
46 lines
1.6 KiB
Diff
From 3dc6e998d18bfba6e0dc979d3cc68eba98dfeef7 Mon Sep 17 00:00:00 2001
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From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Fri, 4 Oct 2024 15:51:26 +0200
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Subject: [PATCH] net: airoha: Update tx cpu dma ring idx at the end of xmit
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loop
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Move the tx cpu dma ring index update out of transmit loop of
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airoha_dev_xmit routine in order to not start transmitting the packet
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before it is fully DMA mapped (e.g. fragmented skbs).
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Fixes: 23020f049327 ("net: airoha: Introduce ethernet support for EN7581 SoC")
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Reported-by: Felix Fietkau <nbd@nbd.name>
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Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
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Reviewed-by: Simon Horman <horms@kernel.org>
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Link: https://patch.msgid.link/20241004-airoha-eth-7581-mapping-fix-v1-1-8e4279ab1812@kernel.org
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/ethernet/mediatek/airoha_eth.c | 9 +++++----
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1 file changed, 5 insertions(+), 4 deletions(-)
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--- a/drivers/net/ethernet/mediatek/airoha_eth.c
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+++ b/drivers/net/ethernet/mediatek/airoha_eth.c
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@@ -2480,10 +2480,6 @@ static netdev_tx_t airoha_dev_xmit(struc
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e->dma_addr = addr;
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e->dma_len = len;
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- airoha_qdma_rmw(qdma, REG_TX_CPU_IDX(qid),
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- TX_RING_CPU_IDX_MASK,
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- FIELD_PREP(TX_RING_CPU_IDX_MASK, index));
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-
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data = skb_frag_address(frag);
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len = skb_frag_size(frag);
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}
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@@ -2492,6 +2488,11 @@ static netdev_tx_t airoha_dev_xmit(struc
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q->queued += i;
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skb_tx_timestamp(skb);
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+ if (!netdev_xmit_more())
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+ airoha_qdma_rmw(qdma, REG_TX_CPU_IDX(qid),
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+ TX_RING_CPU_IDX_MASK,
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+ FIELD_PREP(TX_RING_CPU_IDX_MASK, q->head));
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+
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if (q->ndesc - q->queued < q->free_thr)
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netif_tx_stop_queue(txq);
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