[v2,net-next,1/7] net: page_pool: add helper function to retrieve dma addresses
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Message ID 20190530182039.4945-2-ivan.khoronzhuk@linaro.org
State New
Headers show
  • net: ethernet: ti: cpsw: Add XDP support
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Commit Message

Ivan Khoronzhuk May 30, 2019, 6:20 p.m. UTC
From: Ilias Apalodimas <ilias.apalodimas@linaro.org>

On a previous patch dma addr was stored in 'struct page'.
Use that to retrieve DMA addresses used by network drivers

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
 include/net/page_pool.h | 5 +++++
 1 file changed, 5 insertions(+)

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diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index 694d055e01ef..b885d86cb7a1 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -132,6 +132,11 @@  static inline void page_pool_recycle_direct(struct page_pool *pool,
 	__page_pool_put_page(pool, page, true);
+static inline dma_addr_t page_pool_get_dma_addr(struct page *page)
+	return page->dma_addr;
 static inline bool is_page_pool_compiled_in(void)