net/mlx5e: RX, Verify MPWQE stride size is in range (e1c15b62) · Commits · 戴 / test

Add check of MPWQE stride size is within range supported by HW. In case calculated MPWQE stride size exceed range, linear SKB can't be used and we should use non linear MPWQE instead. Fixes: ("net/mlx5e: Use linear SKB in Striding RQ") Signed-off-by:

Moshe Shemesh <moshe@mellanox.com> Reviewed-by:

Tariq Toukan <tariqt@mellanox.com> Signed-off-by:

Saeed Mahameed <saeedm@mellanox.com>

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

+5 −0

Original line number	Diff line number	Diff line
		@@ -128,6 +128,8 @@ static bool mlx5e_rx_is_linear_skb(struct mlx5_core_dev *mdev,
		return !params->lro_en && frag_sz <= PAGE_SIZE;
		}

		#define MLX5_MAX_MPWQE_LOG_WQE_STRIDE_SZ ((BIT(__mlx5_bit_sz(wq, log_wqe_stride_size)) - 1) + \
		MLX5_MPWQE_LOG_STRIDE_SZ_BASE)
		static bool mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev *mdev,
		struct mlx5e_params *params)
		{
		@@ -138,6 +140,9 @@ static bool mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev *mdev,
		if (!mlx5e_rx_is_linear_skb(mdev, params))
		return false;

		if (order_base_2(frag_sz) > MLX5_MAX_MPWQE_LOG_WQE_STRIDE_SZ)
		return false;

		if (MLX5_CAP_GEN(mdev, ext_stride_num_range))
		return true;

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