[net-next 02/16] net/mlx5e: Convert mlx5e_get_max_sq_wqebbs to u8
From: Saeed Mahameed <saeed@kernel.org>
Date: 2022-09-27 20:37:01
Subsystem:
mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Leon Romanovsky, Tariq Toukan, Mark Bloch, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Maxim Mikityanskiy <redacted> The return value of mlx5e_get_max_sq_wqebbs is clamped down to MLX5_SEND_WQE_MAX_WQEBBS = 16, which fits into u8. This commit changes the return type of this function to u8 for stricter type safety. Signed-off-by: Maxim Mikityanskiy <redacted> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Saeed Mahameed <saeedm@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> --- drivers/net/ethernet/mellanox/mlx5/core/en.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 648a178e8db8..05126c6ae13d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h@@ -227,10 +227,12 @@ static inline int mlx5e_get_max_num_channels(struct mlx5_core_dev *mdev) * bytes units. Driver hardens the limitation to 1KB (16 * WQEBBs), unless firmware capability is stricter. */ -static inline u16 mlx5e_get_max_sq_wqebbs(struct mlx5_core_dev *mdev) +static inline u8 mlx5e_get_max_sq_wqebbs(struct mlx5_core_dev *mdev) { - return min_t(u16, MLX5_SEND_WQE_MAX_WQEBBS, - MLX5_CAP_GEN(mdev, max_wqe_sz_sq) / MLX5_SEND_WQE_BB); + BUILD_BUG_ON(MLX5_SEND_WQE_MAX_WQEBBS > U8_MAX); + + return (u8)min_t(u16, MLX5_SEND_WQE_MAX_WQEBBS, + MLX5_CAP_GEN(mdev, max_wqe_sz_sq) / MLX5_SEND_WQE_BB); } static inline u8 mlx5e_get_sw_max_sq_mpw_wqebbs(u8 max_sq_wqebbs)
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2.37.3