netdev - [PATCH net-next v17 05/14] page_pool: move dmaddr helpers to .c file

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Message-ID: <20240730022623.98909-6-almasrymina@google.com>
Date: Tue, 30 Jul 2024 02:26:09 +0000
From: Mina Almasry <almasrymina@...gle.com>
To: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-doc@...r.kernel.org, linux-alpha@...r.kernel.org, 
	linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org, 
	sparclinux@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
	linux-arch@...r.kernel.org, linux-kselftest@...r.kernel.org, 
	bpf@...r.kernel.org, linux-media@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org
Cc: Mina Almasry <almasrymina@...gle.com>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Donald Hunter <donald.hunter@...il.com>, Jonathan Corbet <corbet@....net>, 
	Richard Henderson <richard.henderson@...aro.org>, Ivan Kokshaysky <ink@...assic.park.msu.ru>, 
	Matt Turner <mattst88@...il.com>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
	"James E.J. Bottomley" <James.Bottomley@...senPartnership.com>, Helge Deller <deller@....de>, 
	Andreas Larsson <andreas@...sler.com>, Jesper Dangaard Brouer <hawk@...nel.org>, 
	Ilias Apalodimas <ilias.apalodimas@...aro.org>, Steven Rostedt <rostedt@...dmis.org>, 
	Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, 
	Arnd Bergmann <arnd@...db.de>, Steffen Klassert <steffen.klassert@...unet.com>, 
	Herbert Xu <herbert@...dor.apana.org.au>, David Ahern <dsahern@...nel.org>, 
	Willem de Bruijn <willemdebruijn.kernel@...il.com>, Shuah Khan <shuah@...nel.org>, 
	Sumit Semwal <sumit.semwal@...aro.org>, 
	"Christian König" <christian.koenig@....com>, Bagas Sanjaya <bagasdotme@...il.com>, 
	Christoph Hellwig <hch@...radead.org>, Nikolay Aleksandrov <razor@...ckwall.org>, Taehee Yoo <ap420073@...il.com>, 
	Pavel Begunkov <asml.silence@...il.com>, David Wei <dw@...idwei.uk>, Jason Gunthorpe <jgg@...pe.ca>, 
	Yunsheng Lin <linyunsheng@...wei.com>, Shailend Chand <shailend@...gle.com>, 
	Harshitha Ramamurthy <hramamurthy@...gle.com>, Shakeel Butt <shakeel.butt@...ux.dev>, 
	Jeroen de Borst <jeroendb@...gle.com>, Praveen Kaligineedi <pkaligineedi@...gle.com>
Subject: [PATCH net-next v17 05/14] page_pool: move dmaddr helpers to .c file

These helpers are used for setup and init of buffers, and their
implementation need not be static inline in the header file.

Moving the implementation to the .c file allows us to hide netmem
implementation details in internal header files rather than the public
file.

Signed-off-by: Mina Almasry <almasrymina@...gle.com>

---
 include/net/page_pool/helpers.h | 30 ++----------------------------
 net/core/page_pool.c            | 31 +++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 28 deletions(-)

diff --git a/include/net/page_pool/helpers.h b/include/net/page_pool/helpers.h
index 2b43a893c619d..8f27ecc00bb16 100644
--- a/include/net/page_pool/helpers.h
+++ b/include/net/page_pool/helpers.h
@@ -399,17 +399,7 @@ static inline void page_pool_free_va(struct page_pool *pool, void *va,
 	page_pool_put_page(pool, virt_to_head_page(va), -1, allow_direct);
 }
 
-static inline dma_addr_t page_pool_get_dma_addr_netmem(netmem_ref netmem)
-{
-	struct page *page = netmem_to_page(netmem);
-
-	dma_addr_t ret = page->dma_addr;
-
-	if (PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA)
-		ret <<= PAGE_SHIFT;
-
-	return ret;
-}
+dma_addr_t page_pool_get_dma_addr_netmem(netmem_ref netmem);
 
 /**
  * page_pool_get_dma_addr() - Retrieve the stored DMA address.
@@ -423,23 +413,7 @@ static inline dma_addr_t page_pool_get_dma_addr(const struct page *page)
 	return page_pool_get_dma_addr_netmem(page_to_netmem((struct page *)page));
 }
 
-static inline bool page_pool_set_dma_addr_netmem(netmem_ref netmem,
-						 dma_addr_t addr)
-{
-	struct page *page = netmem_to_page(netmem);
-
-	if (PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA) {
-		page->dma_addr = addr >> PAGE_SHIFT;
-
-		/* We assume page alignment to shave off bottom bits,
-		 * if this "compression" doesn't work we need to drop.
-		 */
-		return addr != (dma_addr_t)page->dma_addr << PAGE_SHIFT;
-	}
-
-	page->dma_addr = addr;
-	return false;
-}
+bool page_pool_set_dma_addr_netmem(netmem_ref netmem, dma_addr_t addr);
 
 /**
  * page_pool_dma_sync_for_cpu - sync Rx page for CPU after it's written by HW
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 2abe6e919224d..a032f731d4146 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -1099,3 +1099,34 @@ void page_pool_update_nid(struct page_pool *pool, int new_nid)
 	}
 }
 EXPORT_SYMBOL(page_pool_update_nid);
+
+dma_addr_t page_pool_get_dma_addr_netmem(netmem_ref netmem)
+{
+	struct page *page = netmem_to_page(netmem);
+
+	dma_addr_t ret = page->dma_addr;
+
+	if (PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA)
+		ret <<= PAGE_SHIFT;
+
+	return ret;
+}
+EXPORT_SYMBOL(page_pool_get_dma_addr_netmem);
+
+bool page_pool_set_dma_addr_netmem(netmem_ref netmem, dma_addr_t addr)
+{
+	struct page *page = netmem_to_page(netmem);
+
+	if (PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA) {
+		page->dma_addr = addr >> PAGE_SHIFT;
+
+		/* We assume page alignment to shave off bottom bits,
+		 * if this "compression" doesn't work we need to drop.
+		 */
+		return addr != (dma_addr_t)page->dma_addr << PAGE_SHIFT;
+	}
+
+	page->dma_addr = addr;
+	return false;
+}
+EXPORT_SYMBOL(page_pool_set_dma_addr_netmem);
-- 
2.46.0.rc1.232.g9752f9e123-goog