linux-kernel - [PATCH net-next v10 03/12] mlx4: access ->pp_ref_count through netmem

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Message-Id: <20250714120047.35901-4-byungchul@sk.com>
Date: Mon, 14 Jul 2025 21:00:38 +0900
From: Byungchul Park <byungchul@...com>
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Subject: [PATCH net-next v10 03/12] mlx4: access ->pp_ref_count through netmem_desc instead of page

To eliminate the use of struct page in page pool, the page pool users
should use netmem descriptor and APIs instead.

Make mlx4 access ->pp_ref_count through netmem_desc instead of page.

Signed-off-by: Byungchul Park <byungchul@...com>
---
 drivers/net/ethernet/mellanox/mlx4/en_rx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index b33285d755b9..92a16ddb7d86 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -460,9 +460,11 @@ static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv,
 
 		truesize += frag_info->frag_stride;
 		if (frag_info->frag_stride == PAGE_SIZE / 2) {
+			struct netmem_desc *desc = pp_page_to_nmdesc(page);
+
 			frags->page_offset ^= PAGE_SIZE / 2;
 			release = page_count(page) != 1 ||
-				  atomic_long_read(&page->pp_ref_count) != 1 ||
+				  atomic_long_read(&desc->pp_ref_count) != 1 ||
 				  page_is_pfmemalloc(page) ||
 				  page_to_nid(page) != numa_mem_id();
 		} else if (!priv->rx_headroom) {
-- 
2.17.1