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Commit 0eca995f authored by Huy Nguyen's avatar Huy Nguyen Committed by David S. Miller
Browse files

net/mlx5e: Add DCBX control interface 



Use setdcbx interface to set the DCBX mode to firmware or os.
If setdcbx is called with mode value of zero, the DCBX mode
is set to firmware.

Signed-off-by: default avatarHuy Nguyen <huyn@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e207b7e9

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

+24 −3
Original line number Diff line number Diff line
@@ -287,13 +287,34 @@ static int mlx5e_dcbnl_ieee_setpfc(struct net_device *dev, 


static u8 mlx5e_dcbnl_getdcbx(struct net_device *dev)

{

	return DCB_CAP_DCBX_HOST |

	       DCB_CAP_DCBX_VER_IEEE |

	       DCB_CAP_DCBX_VER_CEE;

	struct mlx5e_priv *priv = netdev_priv(dev);

	struct mlx5e_dcbx *dcbx = &priv->dcbx;

	u8 mode = DCB_CAP_DCBX_VER_IEEE | DCB_CAP_DCBX_VER_CEE;



	if (dcbx->mode == MLX5E_DCBX_PARAM_VER_OPER_HOST)

		mode |= DCB_CAP_DCBX_HOST;



	return mode;

}



static u8 mlx5e_dcbnl_setdcbx(struct net_device *dev, u8 mode)

{

	struct mlx5e_priv *priv = netdev_priv(dev);

	struct mlx5e_dcbx *dcbx = &priv->dcbx;



	if ((!mode) && MLX5_CAP_GEN(priv->mdev, dcbx)) {

		if (dcbx->mode == MLX5E_DCBX_PARAM_VER_OPER_AUTO)

			return 0;



		/* set dcbx to fw controlled */

		if (!mlx5e_dcbnl_set_dcbx_mode(priv, MLX5E_DCBX_PARAM_VER_OPER_AUTO)) {

			dcbx->mode = MLX5E_DCBX_PARAM_VER_OPER_AUTO;

			return 0;

		}



		return 1;

	}



	if (mlx5e_dcbnl_switch_to_host_mode(netdev_priv(dev)))

		return 1;