In VHT mode we can receive larger MPDUs. Increasing the buffer size reduces
fragmentation here, which should improve performance.
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7615/dma.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/dma.c b/drivers/net/wireless/mediatek/mt76/mt7615/dma.c
index 5cdbe3747901..0b1fbddd1c3f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/dma.c
@@ -192,8 +192,13 @@ static void mt7663_dma_sched_init(struct mt7615_dev *dev)
int mt7615_dma_init(struct mt7615_dev *dev)
{
int rx_ring_size = MT7615_RX_RING_SIZE;
+ int rx_buf_size = MT_RX_BUF_SIZE;
int ret;
+ /* Increase buffer size to receive large VHT MPDUs */
+ if (dev->mt76.cap.has_5ghz)
+ rx_buf_size *= 2;
+
mt76_dma_attach(&dev->mt76);
mt76_wr(dev, MT_WPDMA_GLO_CFG,
@@ -234,7 +239,7 @@ int mt7615_dma_init(struct mt7615_dev *dev)
/* init rx queues */
ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU], 1,
- MT7615_RX_MCU_RING_SIZE, MT_RX_BUF_SIZE,
+ MT7615_RX_MCU_RING_SIZE, rx_buf_size,
MT_RX_RING_BASE);
if (ret)
return ret;
@@ -243,7 +248,7 @@ int mt7615_dma_init(struct mt7615_dev *dev)
rx_ring_size /= 2;
ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MAIN], 0,
- rx_ring_size, MT_RX_BUF_SIZE, MT_RX_RING_BASE);
+ rx_ring_size, rx_buf_size, MT_RX_RING_BASE);
if (ret)
return ret;
--
2.24.0
