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e19f9759 | 1 | /* Copyright (C) 2007-2014 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 | |
ebf38fb7 | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
c6c8fea2 SE |
16 | */ |
17 | ||
18 | #ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_ | |
19 | #define _NET_BATMAN_ADV_HARD_INTERFACE_H_ | |
20 | ||
e9a4f295 SE |
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, | |
e8958dbf | 28 | }; |
c6c8fea2 | 29 | |
a15fd361 SE |
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 | ||
9563877e | 40 | extern struct notifier_block batadv_hard_if_notifier; |
c6c8fea2 | 41 | |
0c69aecc | 42 | bool batadv_is_wifi_netdev(struct net_device *net_device); |
c0398768 | 43 | bool batadv_is_wifi_iface(int ifindex); |
56303d34 | 44 | struct batadv_hard_iface* |
9563877e | 45 | batadv_hardif_get_by_netdev(const struct net_device *net_dev); |
56303d34 | 46 | int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, |
9563877e | 47 | const char *iface_name); |
a15fd361 SE |
48 | void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, |
49 | enum batadv_hard_if_cleanup autodel); | |
9563877e SE |
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); | |
c6c8fea2 | 54 | |
89652331 SW |
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 | */ | |
e5d89254 | 60 | static inline void |
56303d34 | 61 | batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface) |
c6c8fea2 | 62 | { |
e6c10f43 | 63 | if (atomic_dec_and_test(&hard_iface->refcount)) |
9563877e | 64 | call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu); |
c6c8fea2 SE |
65 | } |
66 | ||
89652331 SW |
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 | ||
56303d34 SE |
79 | static inline struct batadv_hard_iface * |
80 | batadv_primary_if_get_selected(struct batadv_priv *bat_priv) | |
32ae9b22 | 81 | { |
56303d34 | 82 | struct batadv_hard_iface *hard_iface; |
32ae9b22 ML |
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 | ||
c6c8fea2 | 97 | #endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */ |