diff options
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/main.c | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.c | 6 | ||||
| -rw-r--r-- | drivers/net/netdevsim/dev.c | 3 | ||||
| -rw-r--r-- | include/net/devlink.h | 7 | ||||
| -rw-r--r-- | net/core/devlink.c | 42 |
5 files changed, 57 insertions, 4 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 22c72fb7206a..77f056b0895e 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -4015,6 +4015,7 @@ static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id) goto err_params_unregister; devlink_params_publish(devlink); + devlink_reload_enable(devlink); pci_save_state(pdev); return 0; @@ -4126,6 +4127,8 @@ static void mlx4_remove_one(struct pci_dev *pdev) struct devlink *devlink = priv_to_devlink(priv); int active_vfs = 0; + devlink_reload_disable(devlink); + if (mlx4_is_slave(dev)) persist->interface_state |= MLX4_INTERFACE_STATE_NOWAIT; diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c index e1a90f5bddd0..da436a6aad2f 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c @@ -1198,8 +1198,10 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, if (err) goto err_thermal_init; - if (mlxsw_driver->params_register) + if (mlxsw_driver->params_register) { devlink_params_publish(devlink); + devlink_reload_enable(devlink); + } return 0; @@ -1263,6 +1265,8 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core, { struct devlink *devlink = priv_to_devlink(mlxsw_core); + if (!reload) + devlink_reload_disable(devlink); if (devlink_is_reload_failed(devlink)) { if (!reload) /* Only the parts that were not de-initialized in the diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index 3da96c7e8265..059711edfc61 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -820,6 +820,7 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev) goto err_bpf_dev_exit; devlink_params_publish(devlink); + devlink_reload_enable(devlink); return 0; err_bpf_dev_exit: @@ -865,6 +866,8 @@ void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev) struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev); struct devlink *devlink = priv_to_devlink(nsim_dev); + devlink_reload_disable(devlink); + nsim_dev_reload_destroy(nsim_dev); nsim_bpf_dev_exit(nsim_dev); diff --git a/include/net/devlink.h b/include/net/devlink.h index 8d6b5846822c..7891611868e4 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -38,8 +38,9 @@ struct devlink { struct device *dev; possible_net_t _net; struct mutex lock; - bool reload_failed; - bool registered; + u8 reload_failed:1, + reload_enabled:1, + registered:1; char priv[0] __aligned(NETDEV_ALIGN); }; @@ -824,6 +825,8 @@ void devlink_net_set(struct devlink *devlink, struct net *net); struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size); int devlink_register(struct devlink *devlink, struct device *dev); void devlink_unregister(struct devlink *devlink); +void devlink_reload_enable(struct devlink *devlink); +void devlink_reload_disable(struct devlink *devlink); void devlink_free(struct devlink *devlink); int devlink_port_register(struct devlink *devlink, struct devlink_port *devlink_port, diff --git a/net/core/devlink.c b/net/core/devlink.c index ff53f7d29dea..2e027c9436e0 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -2791,6 +2791,9 @@ static int devlink_reload(struct devlink *devlink, struct net *dest_net, { int err; + if (!devlink->reload_enabled) + return -EOPNOTSUPP; + err = devlink->ops->reload_down(devlink, !!dest_net, extack); if (err) return err; @@ -6308,6 +6311,8 @@ EXPORT_SYMBOL_GPL(devlink_register); void devlink_unregister(struct devlink *devlink) { mutex_lock(&devlink_mutex); + WARN_ON(devlink_reload_supported(devlink) && + devlink->reload_enabled); devlink_notify(devlink, DEVLINK_CMD_DEL); list_del(&devlink->list); mutex_unlock(&devlink_mutex); @@ -6315,6 +6320,41 @@ void devlink_unregister(struct devlink *devlink) EXPORT_SYMBOL_GPL(devlink_unregister); /** + * devlink_reload_enable - Enable reload of devlink instance + * + * @devlink: devlink + * + * Should be called at end of device initialization + * process when reload operation is supported. + */ +void devlink_reload_enable(struct devlink *devlink) +{ + mutex_lock(&devlink_mutex); + devlink->reload_enabled = true; + mutex_unlock(&devlink_mutex); +} +EXPORT_SYMBOL_GPL(devlink_reload_enable); + +/** + * devlink_reload_disable - Disable reload of devlink instance + * + * @devlink: devlink + * + * Should be called at the beginning of device cleanup + * process when reload operation is supported. + */ +void devlink_reload_disable(struct devlink *devlink) +{ + mutex_lock(&devlink_mutex); + /* Mutex is taken which ensures that no reload operation is in + * progress while setting up forbidded flag. + */ + devlink->reload_enabled = false; + mutex_unlock(&devlink_mutex); +} +EXPORT_SYMBOL_GPL(devlink_reload_disable); + +/** * devlink_free - Free devlink instance resources * * @devlink: devlink @@ -8201,7 +8241,7 @@ static void __net_exit devlink_pernet_pre_exit(struct net *net) if (WARN_ON(!devlink_reload_supported(devlink))) continue; err = devlink_reload(devlink, &init_net, NULL); - if (err) + if (err && err != -EOPNOTSUPP) pr_warn("Failed to reload devlink instance into init_net\n"); } } |