netdev - [PATCH 03/24] page_pool: Add netmem_set_dma_addr() and netmem_get_dma

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Date:   Wed, 30 Nov 2022 22:07:42 +0000
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     Jesper Dangaard Brouer <hawk@...nel.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        netdev@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH 03/24] page_pool: Add netmem_set_dma_addr() and netmem_get_dma_addr()

Turn page_pool_set_dma_addr() and page_pool_get_dma_addr() into
wrappers.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 include/net/page_pool.h | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index 0ce20b95290b..a68746a5b99c 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -427,21 +427,31 @@ static inline void page_pool_recycle_direct(struct page_pool *pool,
 #define PAGE_POOL_DMA_USE_PP_FRAG_COUNT	\
 		(sizeof(dma_addr_t) > sizeof(unsigned long))
 
-static inline dma_addr_t page_pool_get_dma_addr(struct page *page)
+static inline dma_addr_t netmem_get_dma_addr(struct netmem *nmem)
 {
-	dma_addr_t ret = page->dma_addr;
+	dma_addr_t ret = nmem->dma_addr;
 
 	if (PAGE_POOL_DMA_USE_PP_FRAG_COUNT)
-		ret |= (dma_addr_t)page->dma_addr_upper << 16 << 16;
+		ret |= (dma_addr_t)nmem->dma_addr_upper << 16 << 16;
 
 	return ret;
 }
 
-static inline void page_pool_set_dma_addr(struct page *page, dma_addr_t addr)
+static inline dma_addr_t page_pool_get_dma_addr(struct page *page)
+{
+	return netmem_get_dma_addr(page_netmem(page));
+}
+
+static inline void netmem_set_dma_addr(struct netmem *nmem, dma_addr_t addr)
 {
-	page->dma_addr = addr;
+	nmem->dma_addr = addr;
 	if (PAGE_POOL_DMA_USE_PP_FRAG_COUNT)
-		page->dma_addr_upper = upper_32_bits(addr);
+		nmem->dma_addr_upper = upper_32_bits(addr);
+}
+
+static inline void page_pool_set_dma_addr(struct page *page, dma_addr_t addr)
+{
+	netmem_set_dma_addr(page_netmem(page), addr);
 }
 
 static inline bool is_page_pool_compiled_in(void)
-- 
2.35.1