Revert "mt76: use a per rx queue page fragment cache"

Will be added back after merging upstream changes

Signed-off-by: Felix Fietkau <[email protected]>

dma.c

@@ -248,13 +248,19 @@ mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q, bool napi)
 	int len = SKB_WITH_OVERHEAD(q->buf_size);
 	int offset = q->buf_offset;
 	int idx;
+	void *(*alloc)(unsigned int fragsz);
+
+	if (napi)
+		alloc = napi_alloc_frag;
+	else
+		alloc = netdev_alloc_frag;
 
 	spin_lock_bh(&q->lock);
 
 	while (q->queued < q->ndesc - 1) {
 		struct mt76_queue_buf qbuf;
 
-		buf = page_frag_alloc(&q->rx_page, q->buf_size, GFP_ATOMIC);
+		buf = alloc(q->buf_size);
 		if (!buf)
 			break;
 
@@ -281,7 +287,6 @@ mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q, bool napi)
 static void
 mt76_dma_rx_cleanup(struct mt76_dev *dev, struct mt76_queue *q)
 {
-	struct page *page;
 	void *buf;
 	bool more;
 
@@ -294,13 +299,6 @@ mt76_dma_rx_cleanup(struct mt76_dev *dev, struct mt76_queue *q)
 		skb_free_frag(buf);
 	} while (1);
 	spin_unlock_bh(&q->lock);
-
-	if (!q->rx_page.va)
-		return;
-
-	page = virt_to_page(q->rx_page.va);
-	__page_frag_cache_drain(page, q->rx_page.pagecnt_bias);
-	memset(&q->rx_page, 0, sizeof(q->rx_page));
 }
 
 static void

mt76.h

@@ -99,7 +99,6 @@ struct mt76_queue {
 
 	dma_addr_t desc_dma;
 	struct sk_buff *rx_head;
-	struct page_frag_cache rx_page;
 };
 
 struct mt76_queue_ops {