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Commit 6f9485af authored by Saeed Mahameed's avatar Saeed Mahameed
Browse files

net/mlx5e: Fail safe tc setup 



Use the new fail-safe channels switch mechanism to set up new
tc parameters.

Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Reviewed-by: default avatarTariq Toukan <tariqt@mellanox.com>
parent be7e87f9

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

+12 −8
Original line number Diff line number Diff line
@@ -2910,7 +2910,7 @@ int mlx5e_modify_channels_vsd(struct mlx5e_channels *chs, bool vsd) 
static int mlx5e_setup_tc(struct net_device *netdev, u8 tc)

{

	struct mlx5e_priv *priv = netdev_priv(netdev);

	bool was_opened;

	struct mlx5e_channels new_channels = {};

	int err = 0;



	if (tc && tc != MLX5E_MAX_NUM_TC)
@@ -2918,17 +2918,21 @@ static int mlx5e_setup_tc(struct net_device *netdev, u8 tc) 


	mutex_lock(&priv->state_lock);



	was_opened = test_bit(MLX5E_STATE_OPENED, &priv->state);

	if (was_opened)

		mlx5e_close_locked(priv->netdev);

	new_channels.params = priv->channels.params;

	new_channels.params.num_tc = tc ? tc : 1;



	priv->channels.params.num_tc = tc ? tc : 1;

	if (test_bit(MLX5E_STATE_OPENED, &priv->state)) {

		priv->channels.params = new_channels.params;

		goto out;

	}



	if (was_opened)

		err = mlx5e_open_locked(priv->netdev);

	err = mlx5e_open_channels(priv, &new_channels);

	if (err)

		goto out;



	mlx5e_switch_priv_channels(priv, &new_channels);

out:

	mutex_unlock(&priv->state_lock);



	return err;

}