netdev - [PATCH net-next 11/16] net/mlx5e: Use non-XSK page allocator in SHAMPO

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Message-Id: <20220930162903.62262-12-saeed@kernel.org>
Date:   Fri, 30 Sep 2022 09:28:58 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>,
        Maxim Mikityanskiy <maximmi@...dia.com>
Subject: [PATCH net-next 11/16] net/mlx5e: Use non-XSK page allocator in SHAMPO

From: Maxim Mikityanskiy <maximmi@...dia.com>

The SHAMPO flow is not compatible with XSK, it can call the page pool
allocator directly to save a branch.

mlx5e_page_alloc is removed, as it's no longer used in any flow.

Signed-off-by: Maxim Mikityanskiy <maximmi@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index 329702e185a9..9d0a5c66c6a9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -293,16 +293,6 @@ static inline int mlx5e_page_alloc_pool(struct mlx5e_rq *rq, union mlx5e_alloc_u
 	return 0;
 }
 
-static inline int mlx5e_page_alloc(struct mlx5e_rq *rq, union mlx5e_alloc_unit *au)
-{
-	if (rq->xsk_pool) {
-		au->xsk = xsk_buff_alloc(rq->xsk_pool);
-		return likely(au->xsk) ? 0 : -ENOMEM;
-	} else {
-		return mlx5e_page_alloc_pool(rq, au);
-	}
-}
-
 void mlx5e_page_dma_unmap(struct mlx5e_rq *rq, struct page *page)
 {
 	dma_addr_t dma_addr = page_pool_get_dma_addr(page);
@@ -562,7 +552,7 @@ static int mlx5e_build_shampo_hd_umr(struct mlx5e_rq *rq,
 		if (!(header_offset & (PAGE_SIZE - 1))) {
 			union mlx5e_alloc_unit au;
 
-			err = mlx5e_page_alloc(rq, &au);
+			err = mlx5e_page_alloc_pool(rq, &au);
 			if (unlikely(err))
 				goto err_unmap;
 			page = dma_info->page = au.page;
-- 
2.37.3