diff options
| author |   Lorenzo Bianconi <lorenzo@kernel.org> | 2023-01-17 14:53:15 +0100 |
|---|---|---|
| committer |   Felix Fietkau <nbd@nbd.name> | 2023-02-03 14:47:17 +0100 |
| commit | 2f5c3c77fc9b6a34b68b97231bfa970e1194ec28 (patch) | |
| tree | 9d894d4b5673c3f55793a8bbe603aa9ec322c686 /drivers/net/wireless/mediatek/mt76/mt76.h | |
| parent | wifi: mt76: mt7915: fix memory leak in mt7915_mmio_wed_init_rx_buf (diff) | |
| download | wireguard-linux-2f5c3c77fc9b6a34b68b97231bfa970e1194ec28.tar.xz wireguard-linux-2f5c3c77fc9b6a34b68b97231bfa970e1194ec28.zip | |
wifi: mt76: switch to page_pool allocator
In order to reduce possible memory allocation failures due to memory
fragmentation caused by page_frag_cache allocator, switch to page_pool
allocator for dma and usb mt76 drivers.
Remove per rx-queue page_frag_cache
Co-developed-by: Felix Fietkau <nbd@nbd.name>
Tested-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76.h')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 4a1d8be06b0a..2ed247e7c00d 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -202,7 +202,7 @@ struct mt76_queue { dma_addr_t desc_dma; struct sk_buff *rx_head; - struct page_frag_cache rx_page; + struct page_pool *page_pool; }; struct mt76_mcu_ops { @@ -1423,6 +1423,25 @@ void __mt76_set_tx_blocked(struct mt76_dev *dev, bool blocked); struct mt76_txwi_cache *mt76_rx_token_release(struct mt76_dev *dev, int token); int mt76_rx_token_consume(struct mt76_dev *dev, void *ptr, struct mt76_txwi_cache *r, dma_addr_t phys); +int mt76_create_page_pool(struct mt76_dev *dev, struct mt76_queue *q); +static inline void mt76_put_page_pool_buf(void *buf, bool allow_direct) +{ + struct page *page = virt_to_head_page(buf); + + page_pool_put_full_page(page->pp, page, allow_direct); +} + +static inline void * +mt76_get_page_pool_buf(struct mt76_queue *q, u32 *offset, u32 size) +{ + struct page *page; + + page = page_pool_dev_alloc_frag(q->page_pool, offset, size); + if (!page) + return NULL; + + return page_address(page) + *offset; +} static inline void mt76_set_tx_blocked(struct mt76_dev *dev, bool blocked) { |