[PATCH net-next v1 01/11] net: page_pool: add helper function to retrieve dma addresses

Jesper Dangaard Brouer
2019-06-13T18:28:13Z

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>
---
include/net/page_pool.h | 5 +++++
1 file changed, 5 insertions(+)

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)
{
#ifdef CONFIG_PAGE_POOL