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9cfc7bd6 | 1 | /* Copyright (C) 2007-2012 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
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, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
17 | * 02110-1301, USA | |
c6c8fea2 SE |
18 | */ |
19 | ||
20 | #ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_ | |
21 | #define _NET_BATMAN_ADV_HARD_INTERFACE_H_ | |
22 | ||
e8958dbf SE |
23 | enum hard_if_state { |
24 | IF_NOT_IN_USE, | |
25 | IF_TO_BE_REMOVED, | |
26 | IF_INACTIVE, | |
27 | IF_ACTIVE, | |
28 | IF_TO_BE_ACTIVATED, | |
29 | IF_I_WANT_YOU | |
30 | }; | |
c6c8fea2 | 31 | |
9563877e | 32 | extern struct notifier_block batadv_hard_if_notifier; |
c6c8fea2 | 33 | |
747e4221 | 34 | struct hard_iface* |
9563877e SE |
35 | batadv_hardif_get_by_netdev(const struct net_device *net_dev); |
36 | int batadv_hardif_enable_interface(struct hard_iface *hard_iface, | |
37 | const char *iface_name); | |
38 | void batadv_hardif_disable_interface(struct hard_iface *hard_iface); | |
39 | void batadv_hardif_remove_interfaces(void); | |
40 | int batadv_hardif_min_mtu(struct net_device *soft_iface); | |
41 | void batadv_update_min_mtu(struct net_device *soft_iface); | |
42 | void batadv_hardif_free_rcu(struct rcu_head *rcu); | |
43 | bool batadv_is_wifi_iface(int ifindex); | |
c6c8fea2 | 44 | |
e6c10f43 | 45 | static inline void hardif_free_ref(struct hard_iface *hard_iface) |
c6c8fea2 | 46 | { |
e6c10f43 | 47 | if (atomic_dec_and_test(&hard_iface->refcount)) |
9563877e | 48 | call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu); |
c6c8fea2 SE |
49 | } |
50 | ||
32ae9b22 ML |
51 | static inline struct hard_iface *primary_if_get_selected( |
52 | struct bat_priv *bat_priv) | |
53 | { | |
54 | struct hard_iface *hard_iface; | |
55 | ||
56 | rcu_read_lock(); | |
57 | hard_iface = rcu_dereference(bat_priv->primary_if); | |
58 | if (!hard_iface) | |
59 | goto out; | |
60 | ||
61 | if (!atomic_inc_not_zero(&hard_iface->refcount)) | |
62 | hard_iface = NULL; | |
63 | ||
64 | out: | |
65 | rcu_read_unlock(); | |
66 | return hard_iface; | |
67 | } | |
68 | ||
c6c8fea2 | 69 | #endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */ |