diff options
| author | Shaker Daibes | 2016-11-27 16:02:12 +0100 |
|---|---|---|
| committer | David S. Miller | 2016-11-28 21:09:36 +0100 |
| commit | 9bcc86064bb5006257e3367fc4439f4072d82442 (patch) | |
| tree | f7738d44294ecc99cf1e4c09a7f153637bde2825 /drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | |
| parent | net/mlx5e: Moves pflags to priv->params (diff) | |
| download | kernel-qcow2-linux-9bcc86064bb5006257e3367fc4439f4072d82442.tar.gz kernel-qcow2-linux-9bcc86064bb5006257e3367fc4439f4072d82442.tar.xz kernel-qcow2-linux-9bcc86064bb5006257e3367fc4439f4072d82442.zip | |
net/mlx5e: Add CQE compression user control
The user can now override the automatic driver decision using the
rx_cqe_compress flag, which is the preference for CQE compression.
The flag is initialized with the automatic driver decision.
Signed-off-by: Shaker Daibes <shakerd@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index d2bdccb41b7d..aa963d74e14d 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -1481,6 +1481,35 @@ static int set_pflag_rx_cqe_based_moder(struct net_device *netdev, bool enable) return err; } +static int set_pflag_rx_cqe_compress(struct net_device *netdev, + bool enable) +{ + struct mlx5e_priv *priv = netdev_priv(netdev); + struct mlx5_core_dev *mdev = priv->mdev; + int err = 0; + bool reset; + + if (!MLX5_CAP_GEN(mdev, cqe_compression)) + return -ENOTSUPP; + + if (enable && priv->tstamp.hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE) { + netdev_err(netdev, "Can't enable cqe compression while timestamping is enabled.\n"); + return -EINVAL; + } + + reset = test_bit(MLX5E_STATE_OPENED, &priv->state); + + if (reset) + mlx5e_close_locked(netdev); + + MLX5E_SET_PFLAG(priv, MLX5E_PFLAG_RX_CQE_COMPRESS, enable); + priv->params.rx_cqe_compress_def = enable; + + if (reset) + err = mlx5e_open_locked(netdev); + return err; +} + static int mlx5e_handle_pflag(struct net_device *netdev, u32 wanted_flags, enum mlx5e_priv_flag flag, @@ -1511,13 +1540,19 @@ static int mlx5e_set_priv_flags(struct net_device *netdev, u32 pflags) int err; mutex_lock(&priv->state_lock); - err = mlx5e_handle_pflag(netdev, pflags, MLX5E_PFLAG_RX_CQE_BASED_MODER, set_pflag_rx_cqe_based_moder); + if (err) + goto out; + err = mlx5e_handle_pflag(netdev, pflags, + MLX5E_PFLAG_RX_CQE_COMPRESS, + set_pflag_rx_cqe_compress); + +out: mutex_unlock(&priv->state_lock); - return err ? -EINVAL : 0; + return err; } static u32 mlx5e_get_priv_flags(struct net_device *netdev) |