From fbe50d9aff0c7dfb0665dd18f606b9ddbbb3ace7 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 3 Dec 2021 18:01:52 +0100 Subject: mt76: allow drivers to drop rx packets early This can be used to free received events without allocating an extra skb Signed-off-by: Felix Fietkau --- drivers/net/wireless/mediatek/mt76/dma.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) (limited to 'drivers/net/wireless/mediatek/mt76/dma.c') diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index 5e1c1506a4c6..3a9af8931c35 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -572,9 +572,7 @@ mt76_dma_rx_process(struct mt76_dev *dev, struct mt76_queue *q, int budget) if (data_len < len + q->buf_offset) { dev_kfree_skb(q->rx_head); q->rx_head = NULL; - - skb_free_frag(data); - continue; + goto free_frag; } if (q->rx_head) { @@ -582,11 +580,14 @@ mt76_dma_rx_process(struct mt76_dev *dev, struct mt76_queue *q, int budget) continue; } + if (!more && dev->drv->rx_check && + !(dev->drv->rx_check(dev, data, len))) + goto free_frag; + skb = build_skb(data, q->buf_size); - if (!skb) { - skb_free_frag(data); - continue; - } + if (!skb) + goto free_frag; + skb_reserve(skb, q->buf_offset); if (q == &dev->q_rx[MT_RXQ_MCU]) { @@ -603,6 +604,10 @@ mt76_dma_rx_process(struct mt76_dev *dev, struct mt76_queue *q, int budget) } dev->drv->rx_skb(dev, q - dev->q_rx, skb); + continue; + +free_frag: + skb_free_frag(data); } mt76_dma_rx_fill(dev, q); -- cgit v1.2.3