提交 7524a5d8 编写于 作者: G Gal Pressman 提交者: David S. Miller

net/mlx5e: Don't try to modify CQ moderation if it is not supported

If CQ moderation is not supported by the device, print a warning on
netdevice load, and return error when trying to modify/query cq
moderation via ethtool.

Fixes: f62b8bb8 ('net/mlx5: Extend mlx5_core to support ConnectX-4
Ethernet functionality')
Signed-off-by: NGal Pressman <galp@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 556dd1b9
......@@ -400,6 +400,9 @@ static int mlx5e_get_coalesce(struct net_device *netdev,
{
struct mlx5e_priv *priv = netdev_priv(netdev);
if (!MLX5_CAP_GEN(priv->mdev, cq_moderation))
return -ENOTSUPP;
coal->rx_coalesce_usecs = priv->params.rx_cq_moderation_usec;
coal->rx_max_coalesced_frames = priv->params.rx_cq_moderation_pkts;
coal->tx_coalesce_usecs = priv->params.tx_cq_moderation_usec;
......@@ -417,6 +420,9 @@ static int mlx5e_set_coalesce(struct net_device *netdev,
int tc;
int i;
if (!MLX5_CAP_GEN(mdev, cq_moderation))
return -ENOTSUPP;
priv->params.tx_cq_moderation_usec = coal->tx_coalesce_usecs;
priv->params.tx_cq_moderation_pkts = coal->tx_max_coalesced_frames;
priv->params.rx_cq_moderation_usec = coal->rx_coalesce_usecs;
......
......@@ -870,12 +870,10 @@ static int mlx5e_open_cq(struct mlx5e_channel *c,
if (err)
goto err_destroy_cq;
err = mlx5_core_modify_cq_moderation(mdev, &cq->mcq,
moderation_usecs,
moderation_frames);
if (err)
goto err_destroy_cq;
if (MLX5_CAP_GEN(mdev, cq_moderation))
mlx5_core_modify_cq_moderation(mdev, &cq->mcq,
moderation_usecs,
moderation_frames);
return 0;
err_destroy_cq:
......@@ -2218,6 +2216,8 @@ static int mlx5e_check_required_hca_cap(struct mlx5_core_dev *mdev)
}
if (!MLX5_CAP_ETH(mdev, self_lb_en_modifiable))
mlx5_core_warn(mdev, "Self loop back prevention is not supported\n");
if (!MLX5_CAP_GEN(mdev, cq_moderation))
mlx5_core_warn(mdev, "CQ modiration is not supported\n");
return 0;
}
......
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