Commit a25d50bf authored by Ilias Apalodimas's avatar Ilias Apalodimas Committed by David S. Miller
Browse files

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: default avatarIlias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0afdeeed

include/net/page_pool.h

+1 −0
Original line number Diff line number Diff line
@@ -110,6 +110,7 @@ static inline struct page *page_pool_dev_alloc_pages(struct page_pool *pool) 
struct page_pool *page_pool_create(const struct page_pool_params *params);



void page_pool_destroy(struct page_pool *pool);

void page_pool_unmap_page(struct page_pool *pool, struct page *page);



/* Never call this directly, use helpers below */

void __page_pool_put_page(struct page_pool *pool,

net/core/page_pool.c

+7 −0
Original line number Diff line number Diff line
@@ -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)

{

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