net/mlx5e: RX, Remove internal page_cache

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This patch removes the internal rx page_cache and uses the generic
page_pool api only. It used to be that the page_pool couldn't handle all
the mlx5 driver usecases, but with the introduction of skb recycling and
page fragmentaton in the page_pool full switch can now be made. Some
benfits of this transition:
* Better page recycling in the cases when the page_cache was suffering
  from head of queue blocking. The page_pool doesn't have this issue.
* DMA mapping/unmapping can be managed by the page_pool.
* mlx5e_rq size reduced by more than 50% due to the page_cache array
  being deleted.

This patch only removes the page_cache. Downstream patches will enable
the required page_pool features and will add further fine-tuning.

Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

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Dragos Tatulea 2022-12-13 14:37:07 +02:00 • committed by Saeed Mahameed

parent ca6ef9f031

commit 08c9b61b07

3 changed files with 0 additions and 72 deletions

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6

drivers/net/ethernet/mellanox/mlx5/core/en.h

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13

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

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53

drivers/net/ethernet/mellanox/mlx5/core/en_rx.c

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