Cross Reference: /drivers/net/ethernet/sfc/rx.c

Lines Matching refs:page
33 /* Number of RX buffers to recycle pages for.  When creating the RX page recycle
34  * ring, this number is divided by the number of buffers per page to calculate
35  * the number of pages to store in the RX page recycle ring.
62 	return page_address(buf->page) + buf->page_offset;
108 /* Check the RX page recycle ring for a page that can be reused. */
109 static struct page *efx_reuse_page(struct efx_rx_queue *rx_queue)
112 	struct page *page;
117 	page = rx_queue->page_ring[index];
118 	if (page == NULL)
126 	/* If page_count is 1 then we hold the only reference to this page. */
127 	if (page_count(page) == 1) {
129 		return page;
131 		state = page_address(page);
135 		put_page(page);
143  * efx_init_rx_buffers - create EFX_RX_BATCH page-based RX buffers
149  * 0 on success. If a single page can be used for multiple buffers,
150  * then the page will either be inserted fully, or not at all.
156 	struct page *page;
164 		page = efx_reuse_page(rx_queue);
165 		if (page == NULL) {
166 			page = alloc_pages(__GFP_COLD | __GFP_COMP |
169 			if (unlikely(page == NULL))
172 				dma_map_page(&efx->pci_dev->dev, page, 0,
177 				__free_pages(page, efx->rx_buffer_order);
180 			state = page_address(page);
183 			state = page_address(page);
194 			rx_buf->page = page;
199 			get_page(page);
210 /* Unmap a DMA-mapped page.  This function is only called for the final RX
211  * buffer in a page.
216 	struct page *page = rx_buf->page;
218 	if (page) {
219 		struct efx_rx_page_state *state = page_address(page);
229 	if (rx_buf->page) {
230 		put_page(rx_buf->page);
231 		rx_buf->page = NULL;
235 /* Attempt to recycle the page if there is an RX recycle ring; the page can
242 	struct page *page = rx_buf->page;
247 	/* Only recycle the page after processing the final buffer. */
262 		rx_queue->page_ring[index] = page;
268 	put_page(rx_buf->page);
274 	/* Release the page reference we hold for the buffer. */
275 	if (rx_buf->page)
276 		put_page(rx_buf->page);
278 	/* If this is the last buffer in a page, unmap and free it. */
283 	rx_buf->page = NULL;
435 			put_page(rx_buf->page);
436 			rx_buf->page = NULL;
450 				   rx_buf->page, rx_buf->page_offset,
452 		rx_buf->page = NULL;
471 /* Allocate and construct an SKB around page fragments */
496 	/* Append the remaining page(s) onto the frag list */
503 					   rx_buf->page, rx_buf->page_offset,
505 			rx_buf->page = NULL;
514 		__free_pages(rx_buf->page, efx->rx_buffer_order);
515 		rx_buf->page = NULL;
798 		struct page *page = rx_queue->page_ring[i];
801 		if (page == NULL)
804 		state = page_address(page);
808 		put_page(page);