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authorDragos Tatulea <dtatulea@nvidia.com>2025-06-16 17:14:41 +0300
committerJakub Kicinski <kuba@kernel.org>2025-06-17 18:34:13 -0700
commit5a842c288cfa3b0fc38412fefbc4c3285908c3c7 (patch)
tree43cc3e4bde87752271cae18022c04cf3f67687d0
parent46bcce5dfd330c233e59cd5efd7eb43f049b0a82 (diff)
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>
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h3
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en_main.c2
2 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
index e837c21d3d21..6501252359b0 100644
--- 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 b4df62b58292..24559cbcbfc2 100644
--- 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);