/* * 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 batadv_hard_if_notifier; struct hard_iface* batadv_hardif_get_by_netdev(const struct net_device *net_dev); int batadv_hardif_enable_interface(struct hard_iface *hard_iface, const char *iface_name); void batadv_hardif_disable_interface(struct hard_iface *hard_iface); 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); bool batadv_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, batadv_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_ */