Simon Wunderlich | e19f975 | 2014-01-04 18:04:25 +0100 | [diff] [blame^] | 1 | /* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 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 |
Antonio Quartulli | ebf38fb | 2013-11-03 20:40:48 +0100 | [diff] [blame] | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 16 | */ |
| 17 | |
| 18 | #ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_ |
| 19 | #define _NET_BATMAN_ADV_HARD_INTERFACE_H_ |
| 20 | |
Sven Eckelmann | e9a4f29 | 2012-06-03 22:19:19 +0200 | [diff] [blame] | 21 | enum batadv_hard_if_state { |
| 22 | BATADV_IF_NOT_IN_USE, |
| 23 | BATADV_IF_TO_BE_REMOVED, |
| 24 | BATADV_IF_INACTIVE, |
| 25 | BATADV_IF_ACTIVE, |
| 26 | BATADV_IF_TO_BE_ACTIVATED, |
| 27 | BATADV_IF_I_WANT_YOU, |
Sven Eckelmann | e8958db | 2011-06-04 11:26:00 +0200 | [diff] [blame] | 28 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 29 | |
Sven Eckelmann | a15fd36 | 2013-02-11 17:10:24 +0800 | [diff] [blame] | 30 | /** |
| 31 | * enum batadv_hard_if_cleanup - Cleanup modi for soft_iface after slave removal |
| 32 | * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface |
| 33 | * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was removed |
| 34 | */ |
| 35 | enum batadv_hard_if_cleanup { |
| 36 | BATADV_IF_CLEANUP_KEEP, |
| 37 | BATADV_IF_CLEANUP_AUTO, |
| 38 | }; |
| 39 | |
Sven Eckelmann | 9563877 | 2012-05-12 02:09:31 +0200 | [diff] [blame] | 40 | extern struct notifier_block batadv_hard_if_notifier; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 41 | |
Antonio Quartulli | 0c69aec | 2013-10-13 02:50:18 +0200 | [diff] [blame] | 42 | bool batadv_is_wifi_netdev(struct net_device *net_device); |
Simon Wunderlich | c039876 | 2013-11-13 19:14:48 +0100 | [diff] [blame] | 43 | bool batadv_is_wifi_iface(int ifindex); |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 44 | struct batadv_hard_iface* |
Sven Eckelmann | 9563877 | 2012-05-12 02:09:31 +0200 | [diff] [blame] | 45 | batadv_hardif_get_by_netdev(const struct net_device *net_dev); |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 46 | int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, |
Sven Eckelmann | 9563877 | 2012-05-12 02:09:31 +0200 | [diff] [blame] | 47 | const char *iface_name); |
Sven Eckelmann | a15fd36 | 2013-02-11 17:10:24 +0800 | [diff] [blame] | 48 | void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, |
| 49 | enum batadv_hard_if_cleanup autodel); |
Sven Eckelmann | 9563877 | 2012-05-12 02:09:31 +0200 | [diff] [blame] | 50 | void batadv_hardif_remove_interfaces(void); |
| 51 | int batadv_hardif_min_mtu(struct net_device *soft_iface); |
| 52 | void batadv_update_min_mtu(struct net_device *soft_iface); |
| 53 | void batadv_hardif_free_rcu(struct rcu_head *rcu); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 54 | |
Simon Wunderlich | 8965233 | 2013-11-13 19:14:46 +0100 | [diff] [blame] | 55 | /** |
| 56 | * batadv_hardif_free_ref - decrement the hard interface refcounter and |
| 57 | * possibly free it |
| 58 | * @hard_iface: the hard interface to free |
| 59 | */ |
Sven Eckelmann | e5d8925 | 2012-05-12 13:48:54 +0200 | [diff] [blame] | 60 | static inline void |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 61 | batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 62 | { |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 63 | if (atomic_dec_and_test(&hard_iface->refcount)) |
Sven Eckelmann | 9563877 | 2012-05-12 02:09:31 +0200 | [diff] [blame] | 64 | call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 65 | } |
| 66 | |
Simon Wunderlich | 8965233 | 2013-11-13 19:14:46 +0100 | [diff] [blame] | 67 | /** |
| 68 | * batadv_hardif_free_ref_now - decrement the hard interface refcounter and |
| 69 | * possibly free it (without rcu callback) |
| 70 | * @hard_iface: the hard interface to free |
| 71 | */ |
| 72 | static inline void |
| 73 | batadv_hardif_free_ref_now(struct batadv_hard_iface *hard_iface) |
| 74 | { |
| 75 | if (atomic_dec_and_test(&hard_iface->refcount)) |
| 76 | batadv_hardif_free_rcu(&hard_iface->rcu); |
| 77 | } |
| 78 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 79 | static inline struct batadv_hard_iface * |
| 80 | batadv_primary_if_get_selected(struct batadv_priv *bat_priv) |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 81 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 82 | struct batadv_hard_iface *hard_iface; |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 83 | |
| 84 | rcu_read_lock(); |
| 85 | hard_iface = rcu_dereference(bat_priv->primary_if); |
| 86 | if (!hard_iface) |
| 87 | goto out; |
| 88 | |
| 89 | if (!atomic_inc_not_zero(&hard_iface->refcount)) |
| 90 | hard_iface = NULL; |
| 91 | |
| 92 | out: |
| 93 | rcu_read_unlock(); |
| 94 | return hard_iface; |
| 95 | } |
| 96 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 97 | #endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */ |