From: Sean Wang sean.wang@mediatek.com
[ Upstream commit 455ae5aabcc72fed7e5c803d59d122415500dc08 ]
Each packet should be padded with the additional zero to become 4-bytes alignment in sdio tx aggregation.
Fixes: 1522ff731f84 ("mt76: mt7663s: introduce sdio tx aggregation") Signed-off-by: Sean Wang sean.wang@mediatek.com Signed-off-by: Felix Fietkau nbd@nbd.name Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/mediatek/mt76/mt7615/sdio_txrx.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/sdio_txrx.c b/drivers/net/wireless/mediatek/mt76/mt7615/sdio_txrx.c index 595519c58255..2c269fee8555 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/sdio_txrx.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/sdio_txrx.c @@ -195,6 +195,7 @@ static int mt7663s_tx_run_queue(struct mt76_dev *dev, enum mt76_txq_id qid) int err, nframes = 0, len = 0, pse_sz = 0, ple_sz = 0; struct mt76_queue *q = dev->q_tx[qid]; struct mt76_sdio *sdio = &dev->sdio; + u8 pad;
while (q->first != q->head) { struct mt76_queue_entry *e = &q->entry[q->first]; @@ -210,7 +211,8 @@ static int mt7663s_tx_run_queue(struct mt76_dev *dev, enum mt76_txq_id qid) goto next; }
- if (len + e->skb->len + 4 > MT76S_XMIT_BUF_SZ) + pad = roundup(e->skb->len, 4) - e->skb->len; + if (len + e->skb->len + pad + 4 > MT76S_XMIT_BUF_SZ) break;
if (mt7663s_tx_pick_quota(sdio, qid, e->buf_sz, &pse_sz, @@ -228,6 +230,11 @@ static int mt7663s_tx_run_queue(struct mt76_dev *dev, enum mt76_txq_id qid) len += iter->len; nframes++; } + + if (unlikely(pad)) { + memset(sdio->xmit_buf[qid] + len, 0, pad); + len += pad; + } next: q->first = (q->first + 1) % q->ndesc; e->done = true;