diff options
| author | Parav Pandit <parav@nvidia.com> | 2021-08-10 16:24:24 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-08-11 16:34:22 +0300 |
| commit | 70862a5d609d7dc8f0501983391f1df9eca6714f (patch) | |
| tree | a5e7f4cd8389d2ed1acea4a04ec602a0d1cbbb04 /drivers/net/ethernet/mellanox/mlx5/core/devlink.c | |
| parent | 87158cedf00ef225ae111dba96973b172086420e (diff) | |
| download | linux-70862a5d609d7dc8f0501983391f1df9eca6714f.tar.xz | |
net/mlx5: Support enable_vnet devlink dev param
Enable user to disable VDPA net auxiliary device so that when it is not
required, user can disable it.
For example,
$ devlink dev param set pci/0000:06:00.0 \
name enable_vnet value false cmode driverinit
$ devlink dev reload pci/0000:06:00.0
At this point devlink instance do not create auxiliary device
mlx5_core.vnet.2 for the VDPA net functionality.
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/devlink.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/devlink.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c index f247ffb325a9..6f4d7c7f06e0 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c @@ -680,6 +680,42 @@ static void mlx5_devlink_rdma_param_unregister(struct devlink *devlink) devlink_param_unregister(devlink, &enable_rdma_param); } +static const struct devlink_param enable_vnet_param = + DEVLINK_PARAM_GENERIC(ENABLE_VNET, BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), + NULL, NULL, NULL); + +static int mlx5_devlink_vnet_param_register(struct devlink *devlink) +{ + struct mlx5_core_dev *dev = devlink_priv(devlink); + union devlink_param_value value; + int err; + + if (!mlx5_vnet_supported(dev)) + return 0; + + err = devlink_param_register(devlink, &enable_vnet_param); + if (err) + return err; + + value.vbool = true; + devlink_param_driverinit_value_set(devlink, + DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET, + value); + devlink_param_publish(devlink, &enable_rdma_param); + return 0; +} + +static void mlx5_devlink_vnet_param_unregister(struct devlink *devlink) +{ + struct mlx5_core_dev *dev = devlink_priv(devlink); + + if (!mlx5_vnet_supported(dev)) + return; + + devlink_param_unpublish(devlink, &enable_vnet_param); + devlink_param_unregister(devlink, &enable_vnet_param); +} + static int mlx5_devlink_auxdev_params_register(struct devlink *devlink) { int err; @@ -692,8 +728,13 @@ static int mlx5_devlink_auxdev_params_register(struct devlink *devlink) if (err) goto rdma_err; + err = mlx5_devlink_vnet_param_register(devlink); + if (err) + goto vnet_err; return 0; +vnet_err: + mlx5_devlink_rdma_param_unregister(devlink); rdma_err: mlx5_devlink_eth_param_unregister(devlink); return err; @@ -701,6 +742,7 @@ rdma_err: static void mlx5_devlink_auxdev_params_unregister(struct devlink *devlink) { + mlx5_devlink_vnet_param_unregister(devlink); mlx5_devlink_rdma_param_unregister(devlink); mlx5_devlink_eth_param_unregister(devlink); } |