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c6c8fea2 | 1 | /* |
64afe353 | 2 | * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
3 | * |
4 | * Marek Lindner, Simon Wunderlich | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of version 2 of the GNU General Public | |
8 | * License as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
18 | * 02110-1301, USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_ | |
23 | #define _NET_BATMAN_ADV_HARD_INTERFACE_H_ | |
24 | ||
25 | #define IF_NOT_IN_USE 0 | |
26 | #define IF_TO_BE_REMOVED 1 | |
27 | #define IF_INACTIVE 2 | |
28 | #define IF_ACTIVE 3 | |
29 | #define IF_TO_BE_ACTIVATED 4 | |
30 | #define IF_I_WANT_YOU 5 | |
31 | ||
32 | extern struct notifier_block hard_if_notifier; | |
33 | ||
747e4221 SE |
34 | struct hard_iface* |
35 | hardif_get_by_netdev(const struct net_device *net_dev); | |
36 | int hardif_enable_interface(struct hard_iface *hard_iface, | |
37 | const char *iface_name); | |
e6c10f43 | 38 | void hardif_disable_interface(struct hard_iface *hard_iface); |
c6c8fea2 | 39 | void hardif_remove_interfaces(void); |
c6c8fea2 SE |
40 | int hardif_min_mtu(struct net_device *soft_iface); |
41 | void update_min_mtu(struct net_device *soft_iface); | |
ed75ccbe | 42 | void hardif_free_rcu(struct rcu_head *rcu); |
c6c8fea2 | 43 | |
e6c10f43 | 44 | static inline void hardif_free_ref(struct hard_iface *hard_iface) |
c6c8fea2 | 45 | { |
e6c10f43 ML |
46 | if (atomic_dec_and_test(&hard_iface->refcount)) |
47 | call_rcu(&hard_iface->rcu, hardif_free_rcu); | |
c6c8fea2 SE |
48 | } |
49 | ||
32ae9b22 ML |
50 | static inline struct hard_iface *primary_if_get_selected( |
51 | struct bat_priv *bat_priv) | |
52 | { | |
53 | struct hard_iface *hard_iface; | |
54 | ||
55 | rcu_read_lock(); | |
56 | hard_iface = rcu_dereference(bat_priv->primary_if); | |
57 | if (!hard_iface) | |
58 | goto out; | |
59 | ||
60 | if (!atomic_inc_not_zero(&hard_iface->refcount)) | |
61 | hard_iface = NULL; | |
62 | ||
63 | out: | |
64 | rcu_read_unlock(); | |
65 | return hard_iface; | |
66 | } | |
67 | ||
c6c8fea2 | 68 | #endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */ |