netdev - [PATCH net-next v2 01/12] net: page_pool: add helper function to retrieve dma addresses

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Date:   Tue, 18 Jun 2019 15:05:12 +0200
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     netdev@...r.kernel.org,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Toke Høiland-Jørgensen <toke@...e.dk>,
        Tariq Toukan <tariqt@...lanox.com>,
        Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     toshiaki.makita1@...il.com, grygorii.strashko@...com,
        ivan.khoronzhuk@...aro.org, mcroce@...hat.com
Subject: [PATCH net-next v2 01/12] net: page_pool: add helper function to
 retrieve dma addresses

From: Ilias Apalodimas <ilias.apalodimas@...aro.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@...aro.org>
Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.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