net/mlx5e: Add TX support for netmems

Declare netmem TX support in netdev.

As required, use the netmem aware dma unmapping APIs
for unmapping netmems in tx completion path.

Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Link: https://patch.msgid.link/20250616141441.1243044-13-mbloch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
index e837c21d3d21396faa24fff82d5b179692870786..6501252359b0132e802ec94f73373e64c6a51047 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
@@ -362,7 +362,8 @@ mlx5e_tx_dma_unmap(struct device *pdev, struct mlx5e_sq_dma *dma)
                dma_unmap_single(pdev, dma->addr, dma->size, DMA_TO_DEVICE);
                break;
        case MLX5E_DMA_MAP_PAGE:
-               dma_unmap_page(pdev, dma->addr, dma->size, DMA_TO_DEVICE);
+               netmem_dma_unmap_page_attrs(pdev, dma->addr, dma->size,
+                                           DMA_TO_DEVICE, 0);
                break;
        default:
                WARN_ONCE(true, "mlx5e_tx_dma_unmap unknown DMA type!\n");

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index b4df62b582926ef76c94e6c424b68fa8a915cfa9..24559cbcbfc202c467fa6e040427863aee833bb9 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5741,6 +5741,8 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
 
        netdev->priv_flags       |= IFF_UNICAST_FLT;
 
+       netdev->netmem_tx = true;
+
        netif_set_tso_max_size(netdev, GSO_MAX_SIZE);
        mlx5e_set_xdp_feature(netdev);
        mlx5e_set_netdev_dev_addr(netdev);