net/mlx5e: allocate 'indirection_rqt' buffer dynamically

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Increasing the size of the indirection_rqt array from 128 to 256 bytes
pushed the stack usage of the mlx5e_hairpin_fill_rqt_rqns() function
over the warning limit when building with clang and CONFIG_KASAN:

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:970:1: error: stack frame size of 1180 bytes in function 'mlx5e_tc_add_nic_flow' [-Werror,-Wframe-larger-than=]

Using dynamic allocation here is safe because the caller does the
same, and it reduces the stack usage of the function to just a few
bytes.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

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Arnd Bergmann 2021-03-08 16:32:57 +01:00 • committed by Saeed Mahameed

parent e16cf9d754

commit 2119bda642

1 changed files with 13 additions and 3 deletions

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

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