| /* |
| * Copyright (C) 2007-2012 B.A.T.M.A.N. contributors: |
| * |
| * Marek Lindner, Simon Wunderlich |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of version 2 of the GNU General Public |
| * License as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA |
| * |
| */ |
| |
| #ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_ |
| #define _NET_BATMAN_ADV_HARD_INTERFACE_H_ |
| |
| enum hard_if_state { |
| IF_NOT_IN_USE, |
| IF_TO_BE_REMOVED, |
| IF_INACTIVE, |
| IF_ACTIVE, |
| IF_TO_BE_ACTIVATED, |
| IF_I_WANT_YOU |
| }; |
| |
| extern struct notifier_block hard_if_notifier; |
| |
| struct hard_iface* |
| hardif_get_by_netdev(const struct net_device *net_dev); |
| int hardif_enable_interface(struct hard_iface *hard_iface, |
| const char *iface_name); |
| void hardif_disable_interface(struct hard_iface *hard_iface); |
| void hardif_remove_interfaces(void); |
| int hardif_min_mtu(struct net_device *soft_iface); |
| void update_min_mtu(struct net_device *soft_iface); |
| void hardif_free_rcu(struct rcu_head *rcu); |
| bool is_wifi_iface(int ifindex); |
| |
| static inline void hardif_free_ref(struct hard_iface *hard_iface) |
| { |
| if (atomic_dec_and_test(&hard_iface->refcount)) |
| call_rcu(&hard_iface->rcu, hardif_free_rcu); |
| } |
| |
| static inline struct hard_iface *primary_if_get_selected( |
| struct bat_priv *bat_priv) |
| { |
| struct hard_iface *hard_iface; |
| |
| rcu_read_lock(); |
| hard_iface = rcu_dereference(bat_priv->primary_if); |
| if (!hard_iface) |
| goto out; |
| |
| if (!atomic_inc_not_zero(&hard_iface->refcount)) |
| hard_iface = NULL; |
| |
| out: |
| rcu_read_unlock(); |
| return hard_iface; |
| } |
| |
| #endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */ |