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authorIlias Apalodimas <ilias.apalodimas@linaro.org>2019-06-18 15:05:17 +0200
committerDavid S. Miller <davem@davemloft.net>2019-06-19 11:23:13 -0400
commita25d50bfe645b3ed6b2cb3773e7025db14a608f3 (patch)
tree5bbe6d106cb73add65d943e20a0fac7bc47f321b /net/core/page_pool.c
parent0afdeeed08b5f59148069e9f7a52d2ab0eba5d49 (diff)
downloadlinux-a25d50bfe645b3ed6b2cb3773e7025db14a608f3.tar.bz2
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 <ilias.apalodimas@linaro.org> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/page_pool.c')
-rw-r--r--net/core/page_pool.c7
1 files changed, 7 insertions, 0 deletions
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)
{