| /* Copyright (C) 2007-2014 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, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_ |
| #define _NET_BATMAN_ADV_HARD_INTERFACE_H_ |
| |
| enum batadv_hard_if_state { |
| BATADV_IF_NOT_IN_USE, |
| BATADV_IF_TO_BE_REMOVED, |
| BATADV_IF_INACTIVE, |
| BATADV_IF_ACTIVE, |
| BATADV_IF_TO_BE_ACTIVATED, |
| BATADV_IF_I_WANT_YOU, |
| }; |
| |
| /** |
| * enum batadv_hard_if_cleanup - Cleanup modi for soft_iface after slave removal |
| * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface |
| * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was removed |
| */ |
| enum batadv_hard_if_cleanup { |
| BATADV_IF_CLEANUP_KEEP, |
| BATADV_IF_CLEANUP_AUTO, |
| }; |
| |
| extern struct notifier_block batadv_hard_if_notifier; |
| |
| bool batadv_is_wifi_netdev(struct net_device *net_device); |
| bool batadv_is_wifi_iface(int ifindex); |
| struct batadv_hard_iface* |
| batadv_hardif_get_by_netdev(const struct net_device *net_dev); |
| int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, |
| const char *iface_name); |
| void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, |
| enum batadv_hard_if_cleanup autodel); |
| void batadv_hardif_remove_interfaces(void); |
| int batadv_hardif_min_mtu(struct net_device *soft_iface); |
| void batadv_update_min_mtu(struct net_device *soft_iface); |
| void batadv_hardif_free_rcu(struct rcu_head *rcu); |
| |
| /** |
| * batadv_hardif_free_ref - decrement the hard interface refcounter and |
| * possibly free it |
| * @hard_iface: the hard interface to free |
| */ |
| static inline void |
| batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface) |
| { |
| if (atomic_dec_and_test(&hard_iface->refcount)) |
| call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu); |
| } |
| |
| /** |
| * batadv_hardif_free_ref_now - decrement the hard interface refcounter and |
| * possibly free it (without rcu callback) |
| * @hard_iface: the hard interface to free |
| */ |
| static inline void |
| batadv_hardif_free_ref_now(struct batadv_hard_iface *hard_iface) |
| { |
| if (atomic_dec_and_test(&hard_iface->refcount)) |
| batadv_hardif_free_rcu(&hard_iface->rcu); |
| } |
| |
| static inline struct batadv_hard_iface * |
| batadv_primary_if_get_selected(struct batadv_priv *bat_priv) |
| { |
| struct batadv_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_ */ |