| 1 | /* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors: |
| 2 | * |
| 3 | * Marek Lindner, Simon Wunderlich |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of version 2 of the GNU General Public |
| 7 | * License as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
| 18 | #ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_ |
| 19 | #define _NET_BATMAN_ADV_HARD_INTERFACE_H_ |
| 20 | |
| 21 | #include "main.h" |
| 22 | |
| 23 | #include <linux/compiler.h> |
| 24 | #include <linux/kref.h> |
| 25 | #include <linux/notifier.h> |
| 26 | #include <linux/rcupdate.h> |
| 27 | #include <linux/stddef.h> |
| 28 | #include <linux/types.h> |
| 29 | |
| 30 | struct net_device; |
| 31 | |
| 32 | enum batadv_hard_if_state { |
| 33 | BATADV_IF_NOT_IN_USE, |
| 34 | BATADV_IF_TO_BE_REMOVED, |
| 35 | BATADV_IF_INACTIVE, |
| 36 | BATADV_IF_ACTIVE, |
| 37 | BATADV_IF_TO_BE_ACTIVATED, |
| 38 | BATADV_IF_I_WANT_YOU, |
| 39 | }; |
| 40 | |
| 41 | /** |
| 42 | * enum batadv_hard_if_cleanup - Cleanup modi for soft_iface after slave removal |
| 43 | * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface |
| 44 | * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was removed |
| 45 | */ |
| 46 | enum batadv_hard_if_cleanup { |
| 47 | BATADV_IF_CLEANUP_KEEP, |
| 48 | BATADV_IF_CLEANUP_AUTO, |
| 49 | }; |
| 50 | |
| 51 | extern struct notifier_block batadv_hard_if_notifier; |
| 52 | |
| 53 | bool batadv_is_wifi_netdev(struct net_device *net_device); |
| 54 | bool batadv_is_wifi_iface(int ifindex); |
| 55 | struct batadv_hard_iface* |
| 56 | batadv_hardif_get_by_netdev(const struct net_device *net_dev); |
| 57 | int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, |
| 58 | const char *iface_name); |
| 59 | void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, |
| 60 | enum batadv_hard_if_cleanup autodel); |
| 61 | void batadv_hardif_remove_interfaces(void); |
| 62 | int batadv_hardif_min_mtu(struct net_device *soft_iface); |
| 63 | void batadv_update_min_mtu(struct net_device *soft_iface); |
| 64 | void batadv_hardif_release(struct kref *ref); |
| 65 | |
| 66 | /** |
| 67 | * batadv_hardif_put - decrement the hard interface refcounter and possibly |
| 68 | * release it |
| 69 | * @hard_iface: the hard interface to free |
| 70 | */ |
| 71 | static inline void batadv_hardif_put(struct batadv_hard_iface *hard_iface) |
| 72 | { |
| 73 | kref_put(&hard_iface->refcount, batadv_hardif_release); |
| 74 | } |
| 75 | |
| 76 | static inline struct batadv_hard_iface * |
| 77 | batadv_primary_if_get_selected(struct batadv_priv *bat_priv) |
| 78 | { |
| 79 | struct batadv_hard_iface *hard_iface; |
| 80 | |
| 81 | rcu_read_lock(); |
| 82 | hard_iface = rcu_dereference(bat_priv->primary_if); |
| 83 | if (!hard_iface) |
| 84 | goto out; |
| 85 | |
| 86 | if (!kref_get_unless_zero(&hard_iface->refcount)) |
| 87 | hard_iface = NULL; |
| 88 | |
| 89 | out: |
| 90 | rcu_read_unlock(); |
| 91 | return hard_iface; |
| 92 | } |
| 93 | |
| 94 | #endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */ |