Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* Copyright (C) 2007-2012 B.A.T.M.A.N. contributors:
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
18 */
19
20#ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_
21#define _NET_BATMAN_ADV_HARD_INTERFACE_H_
22
23enum batadv_hard_if_state {
24 BATADV_IF_NOT_IN_USE,
25 BATADV_IF_TO_BE_REMOVED,
26 BATADV_IF_INACTIVE,
27 BATADV_IF_ACTIVE,
28 BATADV_IF_TO_BE_ACTIVATED,
29 BATADV_IF_I_WANT_YOU,
30};
31
32extern struct notifier_block batadv_hard_if_notifier;
33
34struct batadv_hard_iface*
35batadv_hardif_get_by_netdev(const struct net_device *net_dev);
36int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
37 const char *iface_name);
38void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface);
39void batadv_hardif_remove_interfaces(void);
40int batadv_hardif_min_mtu(struct net_device *soft_iface);
41void batadv_update_min_mtu(struct net_device *soft_iface);
42void batadv_hardif_free_rcu(struct rcu_head *rcu);
43bool batadv_is_wifi_iface(int ifindex);
44
45static inline void
46batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface)
47{
48 if (atomic_dec_and_test(&hard_iface->refcount))
49 call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu);
50}
51
52static inline struct batadv_hard_iface *
53batadv_primary_if_get_selected(struct batadv_priv *bat_priv)
54{
55 struct batadv_hard_iface *hard_iface;
56
57 rcu_read_lock();
58 hard_iface = rcu_dereference(bat_priv->primary_if);
59 if (!hard_iface)
60 goto out;
61
62 if (!atomic_inc_not_zero(&hard_iface->refcount))
63 hard_iface = NULL;
64
65out:
66 rcu_read_unlock();
67 return hard_iface;
68}
69
70#endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */