From: Dragos Tatulea When calculating the dma address of the linear part of an XDP frame, the formula assumes that there is a single XDP buffer per page. Extend the formula to allow multiple XDP buffers per page by calculating the data offset in the page. This is a preparation for the upcoming removal of a single XDP buffer per page limitation when the formula will no longer be correct. Signed-off-by: Dragos Tatulea Reviewed-by: Carolina Jubran Signed-off-by: Tariq Toukan --- drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c index 04e1b5fa4825..d3bab198c99c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c @@ -123,7 +123,7 @@ mlx5e_xmit_xdp_buff(struct mlx5e_xdpsq *sq, struct mlx5e_rq *rq, * mode. */ - dma_addr = page_pool_get_dma_addr(page) + (xdpf->data - (void *)xdpf); + dma_addr = page_pool_get_dma_addr(page) + offset_in_page(xdpf->data); dma_sync_single_for_device(sq->pdev, dma_addr, xdptxd->len, DMA_BIDIRECTIONAL); if (xdptxd->has_frags) { -- 2.44.0