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wifi: mt76: fix RXDMAD_C buffer recycling race

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The RXDMAD_C buffers come from the RRO data queues' page pools, which are
bound to a different NAPI, so the direct page-pool recycle used here could
race the owning NAPI; take the non-direct path as is already done for WED
RX queues.

Fixes: e50d4d710e ("wifi: mt76: Add mt76_dma_get_rxdmad_c_buf utility routione")
Link: https://patch.msgid.link/20260722082610.2699628-17-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau
2026-07-22 08:26:09 +00:00
parent d3ecac68f7
commit e1f97c10a4
1 changed files with 2 additions and 1 deletions
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3
drivers/net/wireless/mediatek/mt76/dma.c
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@@ -990,7 +990,8 @@ mt76_dma_rx_process(struct mt76_dev *dev, struct mt76_queue *q, int budget)
struct sk_buff *skb;
unsigned char *data;
bool check_ddone = false;
bool allow_direct = !mt76_queue_is_wed_rx(q);
bool allow_direct = !mt76_queue_is_wed_rx(q) &&
!mt76_queue_is_wed_rro_rxdmad_c(q);
bool more;
if ((q->flags & MT_QFLAG_WED_RRO_EN) ||