diff options
Diffstat (limited to 'net/switchdev')
| -rw-r--r-- | net/switchdev/switchdev.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c index e109bb97ce3f..099434ec7996 100644 --- a/net/switchdev/switchdev.c +++ b/net/switchdev/switchdev.c @@ -621,3 +621,103 @@ bool switchdev_port_same_parent_id(struct net_device *a, return netdev_phys_item_id_same(&a_attr.u.ppid, &b_attr.u.ppid); } EXPORT_SYMBOL_GPL(switchdev_port_same_parent_id); + +static int __switchdev_handle_port_obj_add(struct net_device *dev, + struct switchdev_notifier_port_obj_info *port_obj_info, + bool (*check_cb)(const struct net_device *dev), + int (*add_cb)(struct net_device *dev, + const struct switchdev_obj *obj, + struct switchdev_trans *trans)) +{ + struct net_device *lower_dev; + struct list_head *iter; + int err = -EOPNOTSUPP; + + if (check_cb(dev)) { + /* This flag is only checked if the return value is success. */ + port_obj_info->handled = true; + return add_cb(dev, port_obj_info->obj, port_obj_info->trans); + } + + /* Switch ports might be stacked under e.g. a LAG. Ignore the + * unsupported devices, another driver might be able to handle them. But + * propagate to the callers any hard errors. + * + * If the driver does its own bookkeeping of stacked ports, it's not + * necessary to go through this helper. + */ + netdev_for_each_lower_dev(dev, lower_dev, iter) { + err = __switchdev_handle_port_obj_add(lower_dev, port_obj_info, + check_cb, add_cb); + if (err && err != -EOPNOTSUPP) + return err; + } + + return err; +} + +int switchdev_handle_port_obj_add(struct net_device *dev, + struct switchdev_notifier_port_obj_info *port_obj_info, + bool (*check_cb)(const struct net_device *dev), + int (*add_cb)(struct net_device *dev, + const struct switchdev_obj *obj, + struct switchdev_trans *trans)) +{ + int err; + + err = __switchdev_handle_port_obj_add(dev, port_obj_info, check_cb, + add_cb); + if (err == -EOPNOTSUPP) + err = 0; + return err; +} +EXPORT_SYMBOL_GPL(switchdev_handle_port_obj_add); + +static int __switchdev_handle_port_obj_del(struct net_device *dev, + struct switchdev_notifier_port_obj_info *port_obj_info, + bool (*check_cb)(const struct net_device *dev), + int (*del_cb)(struct net_device *dev, + const struct switchdev_obj *obj)) +{ + struct net_device *lower_dev; + struct list_head *iter; + int err = -EOPNOTSUPP; + + if (check_cb(dev)) { + /* This flag is only checked if the return value is success. */ + port_obj_info->handled = true; + return del_cb(dev, port_obj_info->obj); + } + + /* Switch ports might be stacked under e.g. a LAG. Ignore the + * unsupported devices, another driver might be able to handle them. But + * propagate to the callers any hard errors. + * + * If the driver does its own bookkeeping of stacked ports, it's not + * necessary to go through this helper. + */ + netdev_for_each_lower_dev(dev, lower_dev, iter) { + err = __switchdev_handle_port_obj_del(lower_dev, port_obj_info, + check_cb, del_cb); + if (err && err != -EOPNOTSUPP) + return err; + } + + return err; +} + +int switchdev_handle_port_obj_del(struct net_device *dev, + struct switchdev_notifier_port_obj_info *port_obj_info, + bool (*check_cb)(const struct net_device *dev), + int (*del_cb)(struct net_device *dev, + const struct switchdev_obj *obj)) +{ + int err; + + err = __switchdev_handle_port_obj_del(dev, port_obj_info, check_cb, + del_cb); + if (err == -EOPNOTSUPP) + err = 0; + return err; +} +EXPORT_SYMBOL_GPL(switchdev_handle_port_obj_del); |