Re: [PATCH net-next V2 08/13] net/mlx5e: Add data direct TX infrastructure

[sashiko-bot@kernel.org]

> From: Dragos Tatulea <dtatulea@nvidia.com>
> 
> Data direct is a HW feature that allows a type of peer-to-peer DMA
> between the NIC and another device (e.g. GPU) going through a specific
> PCIe topology.
> 
> For data direct to work on the TX path, a crossing mkey is necessary
> which is created as a mlx5e resource. This mkey is used by all SQs.
> For simplicity always create this resource and link it to the SQ
> if data direct is supported.
> 
> An SQ state flag is added as well to signal to the TX data path that
> data direct is enabled.
> 
> This commit has no functional changes. data direct mode will be
> enabled in a subsequent commit and mlx5e_queue_get_dma_dev() will then
> point to the right device.
> 
> The data_direct private flag is not propagated to PTP SQs because
> the queue selector will direct devmem net_iovs to regular SQs.
> 
> Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
> Signed-off-by: Tariq Toukan <tariqt@nvidia.com>

Sashiko has reviewed this patch and found no issues.

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