From a25d50bfe645b3ed6b2cb3773e7025db14a608f3 Mon Sep 17 00:00:00 2001 From: Ilias Apalodimas Date: Tue, 18 Jun 2019 15:05:17 +0200 Subject: net: page_pool: add helper function to unmap dma addresses On a previous patch dma addr was stored in 'struct page'. Use that to unmap DMA addresses used by network drivers Signed-off-by: Ilias Apalodimas Signed-off-by: Jesper Dangaard Brouer Signed-off-by: David S. Miller --- net/core/page_pool.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'net/core/page_pool.c') diff --git a/net/core/page_pool.c b/net/core/page_pool.c index 5b2252c6d49b..205af7bd6d09 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -190,6 +190,13 @@ static void __page_pool_clean_page(struct page_pool *pool, page->dma_addr = 0; } +/* unmap the page and clean our state */ +void page_pool_unmap_page(struct page_pool *pool, struct page *page) +{ + __page_pool_clean_page(pool, page); +} +EXPORT_SYMBOL(page_pool_unmap_page); + /* Return a page to the page allocator, cleaning up our state */ static void __page_pool_return_page(struct page_pool *pool, struct page *page) { -- cgit v1.2.3-59-g8ed1b