[PATCH net-next 07/10] net/mlx5e: Use the correct DMA dev when data_direct pdev enabled
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From: Tariq Toukan <tariqt@nvidia.com>
Date: 2026-10-08 13:29:52
Also in:
linux-rdma, lkml
Subsystem:
mellanox ethernet driver (mlx5e), mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Tariq Toukan, Mark Bloch, Leon Romanovsky, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Dragos Tatulea <dtatulea@nvidia.com> When the private flag is set, always return the data direct PCI device instead of the NIC PF PCI device in .ndo_queue_get_dma_dev. Rename netdev argument to netdev because there are too many confusing "dev"-based names in this function. Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index d5282a301621..6476baf71bde 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c@@ -5897,10 +5897,10 @@ static int mlx5e_queue_start(struct net_device *dev, return 0; } -static struct device *mlx5e_queue_get_dma_dev(struct net_device *dev, +static struct device *mlx5e_queue_get_dma_dev(struct net_device *netdev, int queue_index) { - struct mlx5e_priv *priv = netdev_priv(dev); + struct mlx5e_priv *priv = netdev_priv(netdev); struct mlx5e_channels *channels; struct device *pdev = NULL; struct mlx5e_channel *ch;
@@ -5913,7 +5913,16 @@ static struct device *mlx5e_queue_get_dma_dev(struct net_device *dev, goto out; ch = channels->c[queue_index]; - pdev = ch->pdev; + if (MLX5E_GET_PFLAG(&channels->params, MLX5E_PFLAG_DATA_DIRECT)) { + struct mlx5_core_dev *mdev = ch->mdev; + struct mlx5_data_direct_dev *dd_dev; + + dd_dev = mlx5_data_direct_get_dev(mdev->data_direct); + if (dd_dev) + pdev = &dd_dev->pdev->dev; + } else { + pdev = ch->pdev; + } out: mutex_unlock(&priv->state_lock);
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2.44.0