Commit 90b1df74 authored by Liu, Changcheng's avatar Liu, Changcheng Committed by Saeed Mahameed
Browse files

net/mlx5: detect and enable bypass port select flow table 



Use port selection capability port_select_flow_table_bypass
bit to detect and enable explicit port affinity even when
in lag hash mode.

Signed-off-by: default avatarLiu, Changcheng <jerrliu@nvidia.com>
Reviewed-by: default avatarMark Bloch <mbloch@nvidia.com>
Reviewed-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent b146a7cd

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

+34 −0
Original line number Diff line number Diff line
@@ -652,6 +652,33 @@ static int handle_hca_cap_roce(struct mlx5_core_dev *dev, void *set_ctx) 
	return err;

}



static int handle_hca_cap_port_selection(struct mlx5_core_dev *dev,

					 void *set_ctx)

{

	void *set_hca_cap;

	int err;



	if (!MLX5_CAP_GEN(dev, port_selection_cap))

		return 0;



	err = mlx5_core_get_caps(dev, MLX5_CAP_PORT_SELECTION);

	if (err)

		return err;



	if (MLX5_CAP_PORT_SELECTION(dev, port_select_flow_table_bypass) ||

	    !MLX5_CAP_PORT_SELECTION_MAX(dev, port_select_flow_table_bypass))

		return 0;



	set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx, capability);

	memcpy(set_hca_cap, dev->caps.hca[MLX5_CAP_PORT_SELECTION]->cur,

	       MLX5_ST_SZ_BYTES(port_selection_cap));

	MLX5_SET(port_selection_cap, set_hca_cap, port_select_flow_table_bypass, 1);



	err = set_caps(dev, set_ctx, MLX5_SET_HCA_CAP_OP_MODE_PORT_SELECTION);



	return err;

}



static int set_hca_cap(struct mlx5_core_dev *dev)

{

	int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
@@ -696,6 +723,13 @@ static int set_hca_cap(struct mlx5_core_dev *dev) 
		goto out;

	}



	memset(set_ctx, 0, set_sz);

	err = handle_hca_cap_port_selection(dev, set_ctx);

	if (err) {

		mlx5_core_err(dev, "handle_hca_cap_port_selection failed\n");

		goto out;

	}



out:

	kfree(set_ctx);

	return err;