net/mlx5: DR, For short chains of STEs, avoid allocating ste_arr dynamically

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While creating rule, ste_arr is an array that is allocated at the start
of the function and freed at the end.
This memory allocation can sometimes lead to "hiccups" of up to 10ms.
However, the common use case is short chains of STEs. For such cases,
we can use a local buffer on stack instead.

Changes in v2:
  Use small local array for short rules, allocate dynamically for long rules

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

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Yevgeny Kliteynik 2022-03-29 15:23:55 +03:00 • committed by Saeed Mahameed

parent d277b55f0f

commit b9b81e1e93

1 changed files with 27 additions and 13 deletions

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drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c

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