Commit 2a9269b1 authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Kalle Valo
Browse files

mt7601u: use ieee80211_rx_list to pass frames to the network stack as a batch 



Similar to mt76 driver, rely on ieee80211_rx_list in order to
improve icache footprint

Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Acked-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/5c72fa2dda45c1ae3f285af80c02f3db23341d85.1610580222.git.lorenzo@kernel.org
parent 6598f32d

drivers/net/wireless/mediatek/mt7601u/dma.c

+14 −5
Original line number Diff line number Diff line
@@ -74,7 +74,8 @@ mt7601u_rx_skb_from_seg(struct mt7601u_dev *dev, struct mt7601u_rxwi *rxwi, 
}



static void mt7601u_rx_process_seg(struct mt7601u_dev *dev, u8 *data,

				   u32 seg_len, struct page *p)

				   u32 seg_len, struct page *p,

				   struct list_head *list)

{

	struct sk_buff *skb;

	struct mt7601u_rxwi *rxwi;
@@ -104,9 +105,13 @@ static void mt7601u_rx_process_seg(struct mt7601u_dev *dev, u8 *data, 
	if (!skb)

		return;



	spin_lock(&dev->mac_lock);

	ieee80211_rx(dev->hw, skb);

	spin_unlock(&dev->mac_lock);

	local_bh_disable();

	rcu_read_lock();



	ieee80211_rx_list(dev->hw, NULL, skb, list);



	rcu_read_unlock();

	local_bh_enable();

}



static u16 mt7601u_rx_next_seg_len(u8 *data, u32 data_len)
@@ -130,6 +135,7 @@ mt7601u_rx_process_entry(struct mt7601u_dev *dev, struct mt7601u_dma_buf_rx *e) 
	u32 seg_len, data_len = e->urb->actual_length;

	u8 *data = page_address(e->p);

	struct page *new_p = NULL;

	LIST_HEAD(list);

	int cnt = 0;



	if (!test_bit(MT7601U_STATE_INITIALIZED, &dev->state))
@@ -140,7 +146,8 @@ mt7601u_rx_process_entry(struct mt7601u_dev *dev, struct mt7601u_dma_buf_rx *e) 
		new_p = dev_alloc_pages(MT_RX_ORDER);



	while ((seg_len = mt7601u_rx_next_seg_len(data, data_len))) {

		mt7601u_rx_process_seg(dev, data, seg_len, new_p ? e->p : NULL);

		mt7601u_rx_process_seg(dev, data, seg_len,

				       new_p ? e->p : NULL, &list);



		data_len -= seg_len;

		data += seg_len;
@@ -150,6 +157,8 @@ mt7601u_rx_process_entry(struct mt7601u_dev *dev, struct mt7601u_dma_buf_rx *e) 
	if (cnt > 1)

		trace_mt_rx_dma_aggr(dev, cnt, !!new_p);



	netif_receive_skb_list(&list);



	if (new_p) {

		/* we have one extra ref from the allocator */

		__free_pages(e->p, MT_RX_ORDER);