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Commit e725440e authored by Saeed Mahameed's avatar Saeed Mahameed Committed by David S. Miller
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net/mlx5_core: Set/Query port MTU commands 



Introduce set/Query low level functions to access MTU in hardware. To be
used by the netdev.

Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarAmir Vadai <amirv@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 90b3e38d

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

+53 −0
Original line number Diff line number Diff line
@@ -211,3 +211,56 @@ int mlx5_query_port_status(struct mlx5_core_dev *dev, u8 *status) 
	*status = MLX5_GET(paos_reg, out, oper_status);

	return err;

}



static int mlx5_query_port_mtu(struct mlx5_core_dev *dev,

			       int *admin_mtu, int *max_mtu, int *oper_mtu)

{

	u32 in[MLX5_ST_SZ_DW(pmtu_reg)];

	u32 out[MLX5_ST_SZ_DW(pmtu_reg)];

	int err;



	memset(in, 0, sizeof(in));



	MLX5_SET(pmtu_reg, in, local_port, 1);



	err = mlx5_core_access_reg(dev, in, sizeof(in), out,

				   sizeof(out), MLX5_REG_PMTU, 0, 0);

	if (err)

		return err;



	if (max_mtu)

		*max_mtu  = MLX5_GET(pmtu_reg, out, max_mtu);

	if (oper_mtu)

		*oper_mtu = MLX5_GET(pmtu_reg, out, oper_mtu);

	if (admin_mtu)

		*admin_mtu = MLX5_GET(pmtu_reg, out, admin_mtu);



	return 0;

}



int mlx5_set_port_mtu(struct mlx5_core_dev *dev, int mtu)

{

	u32 in[MLX5_ST_SZ_DW(pmtu_reg)];

	u32 out[MLX5_ST_SZ_DW(pmtu_reg)];



	memset(in, 0, sizeof(in));



	MLX5_SET(pmtu_reg, in, admin_mtu, mtu);

	MLX5_SET(pmtu_reg, in, local_port, 1);



	return mlx5_core_access_reg(dev, in, sizeof(in), out, sizeof(out),

				    MLX5_REG_PMTU, 0, 1);

}

EXPORT_SYMBOL_GPL(mlx5_set_port_mtu);



int mlx5_query_port_max_mtu(struct mlx5_core_dev *dev, int *max_mtu)

{

	return mlx5_query_port_mtu(dev, NULL, max_mtu, NULL);

}

EXPORT_SYMBOL_GPL(mlx5_query_port_max_mtu);



int mlx5_query_port_oper_mtu(struct mlx5_core_dev *dev, int *oper_mtu)

{

	return mlx5_query_port_mtu(dev, NULL, NULL, oper_mtu);

}

EXPORT_SYMBOL_GPL(mlx5_query_port_oper_mtu);

include/linux/mlx5/driver.h

+4 −0
Original line number Diff line number Diff line
@@ -710,6 +710,10 @@ int mlx5_set_port_status(struct mlx5_core_dev *dev, 
			 enum mlx5_port_status status);

int mlx5_query_port_status(struct mlx5_core_dev *dev, u8 *status);



int mlx5_set_port_mtu(struct mlx5_core_dev *dev, int mtu);

int mlx5_query_port_max_mtu(struct mlx5_core_dev *dev, int *max_mtu);

int mlx5_query_port_oper_mtu(struct mlx5_core_dev *dev, int *oper_mtu);



int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq);

void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq);

int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq,