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net/mlx5e: Add TX support for netmems

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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>
This commit is contained in:
Dragos Tatulea 2025-06-16 17:14:41 +03:00 committed by Jakub Kicinski
parent 46bcce5dfd
commit 5a842c288c
2 changed files with 4 additions and 1 deletions
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3
drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
View File

@ -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");

2
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -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);