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9f6446c7 | 1 | /* Copyright (C) 2007-2015 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 | ||
1e2c2a4f SE |
21 | #include "main.h" |
22 | ||
23 | #include <linux/atomic.h> | |
24 | #include <linux/compiler.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 | ||
e9a4f295 SE |
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, | |
e8958dbf | 39 | }; |
c6c8fea2 | 40 | |
a15fd361 SE |
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 | ||
9563877e | 51 | extern struct notifier_block batadv_hard_if_notifier; |
c6c8fea2 | 52 | |
0c69aecc | 53 | bool batadv_is_wifi_netdev(struct net_device *net_device); |
c0398768 | 54 | bool batadv_is_wifi_iface(int ifindex); |
56303d34 | 55 | struct batadv_hard_iface* |
9563877e | 56 | batadv_hardif_get_by_netdev(const struct net_device *net_dev); |
56303d34 | 57 | int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, |
9563877e | 58 | const char *iface_name); |
a15fd361 SE |
59 | void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, |
60 | enum batadv_hard_if_cleanup autodel); | |
9563877e SE |
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_free_rcu(struct rcu_head *rcu); | |
c6c8fea2 | 65 | |
89652331 SW |
66 | /** |
67 | * batadv_hardif_free_ref - decrement the hard interface refcounter and | |
68 | * possibly free it | |
69 | * @hard_iface: the hard interface to free | |
70 | */ | |
e5d89254 | 71 | static inline void |
56303d34 | 72 | batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface) |
c6c8fea2 | 73 | { |
e6c10f43 | 74 | if (atomic_dec_and_test(&hard_iface->refcount)) |
9563877e | 75 | call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu); |
c6c8fea2 SE |
76 | } |
77 | ||
56303d34 SE |
78 | static inline struct batadv_hard_iface * |
79 | batadv_primary_if_get_selected(struct batadv_priv *bat_priv) | |
32ae9b22 | 80 | { |
56303d34 | 81 | struct batadv_hard_iface *hard_iface; |
32ae9b22 ML |
82 | |
83 | rcu_read_lock(); | |
84 | hard_iface = rcu_dereference(bat_priv->primary_if); | |
85 | if (!hard_iface) | |
86 | goto out; | |
87 | ||
88 | if (!atomic_inc_not_zero(&hard_iface->refcount)) | |
89 | hard_iface = NULL; | |
90 | ||
91 | out: | |
92 | rcu_read_unlock(); | |
93 | return hard_iface; | |
94 | } | |
95 | ||
c6c8fea2 | 96 | #endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */ |