@@ -2471,10 +2471,6 @@ static netdev_tx_t airoha_dev_xmit(struct sk_buff *skb,
e->dma_addr = addr;
e->dma_len = len;
- airoha_qdma_rmw(qdma, REG_TX_CPU_IDX(qid),
- TX_RING_CPU_IDX_MASK,
- FIELD_PREP(TX_RING_CPU_IDX_MASK, index));
-
data = skb_frag_address(frag);
len = skb_frag_size(frag);
}
@@ -2483,6 +2479,11 @@ static netdev_tx_t airoha_dev_xmit(struct sk_buff *skb,
q->queued += i;
skb_tx_timestamp(skb);
+ if (!netdev_xmit_more())
+ airoha_qdma_rmw(qdma, REG_TX_CPU_IDX(qid),
+ TX_RING_CPU_IDX_MASK,
+ FIELD_PREP(TX_RING_CPU_IDX_MASK, q->head));
+
if (q->ndesc - q->queued < q->free_thr)
netif_tx_stop_queue(txq);
Move the tx cpu dma ring index update out of transmit loop of airoha_dev_xmit routine in order to not start transmitting the packet before it is fully DMA mapped (e.g. fragmented skbs). Fixes: 23020f049327 ("net: airoha: Introduce ethernet support for EN7581 SoC") Reported-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> --- drivers/net/ethernet/mediatek/airoha_eth.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) --- base-commit: 096c0fa42afa92b6ffa4e441c4c72a2f805c5a88 change-id: 20241004-airoha-eth-7581-mapping-fix-919481cbb340 Best regards,