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net/mlx5e: Add DCBX control interface

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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: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Huy Nguyen 2016-11-27 17:02:08 +02:00 committed by David S. Miller
parent e207b7e991
commit 0eca995f3e
1 changed files with 24 additions and 3 deletions
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27
drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
View file

@ -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;