net: airoha: Take into account out-of-order tx completions in airoha_dev_xmit()

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Completion napi can free out-of-order tx descriptors if hw QoS is
enabled and packets with different priority are queued to same DMA ring.
Take into account possible out-of-order reports checking if the tx queue
is full using circular buffer head/tail pointer instead of the number of
queued packets.

Fixes: 23020f0493 ("net: airoha: Introduce ethernet support for EN7581 SoC")
Suggested-by: Simon Horman <horms@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251012-airoha-tx-busy-queue-v2-1-a600b08bab2d@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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Lorenzo Bianconi 2025-10-12 11:19:44 +02:00 • committed by Paolo Abeni

parent 295ce1eb36

commit bd5afca115

1 changed files with 15 additions and 1 deletions

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drivers/net/ethernet/airoha/airoha_eth.c

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