net/mlx5e: Optimize the page cache reducing its size 2x

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RX page cache stores dma_info structs, that consist of a pointer to
struct page and a DMA address. In fact, the DMA address is extracted
from struct page using page_pool_get_dma_addr when a page is pushed to
the cache. By moving this call to the point when a page is popped from
the cache, we can avoid storing the DMA address in the cache,
effectively reducing its size by two times without losing any
functionality.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Maxim Mikityanskiy 2022-09-29 00:21:49 -07:00 • committed by Jakub Kicinski

parent 0b9c86c785

commit 707f908e31

3 changed files with 6 additions and 8 deletions

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2

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

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4

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

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8

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

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