tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* Copyright (C) 2007-2013 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
32/**
33 * enum batadv_hard_if_cleanup - Cleanup modi for soft_iface after slave removal
34 * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface
35 * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was removed
36 */
37enum batadv_hard_if_cleanup {
38 BATADV_IF_CLEANUP_KEEP,
39 BATADV_IF_CLEANUP_AUTO,
40};
41
42extern struct notifier_block batadv_hard_if_notifier;
43
44struct batadv_hard_iface*
45batadv_hardif_get_by_netdev(const struct net_device *net_dev);
46int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
47 const char *iface_name);
48void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface,
49 enum batadv_hard_if_cleanup autodel);
50void batadv_hardif_remove_interfaces(void);
51int batadv_hardif_min_mtu(struct net_device *soft_iface);
52void batadv_update_min_mtu(struct net_device *soft_iface);
53void batadv_hardif_free_rcu(struct rcu_head *rcu);
54bool batadv_is_wifi_iface(int ifindex);
55
56static inline void
57batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface)
58{
59 if (atomic_dec_and_test(&hard_iface->refcount))
60 call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu);
61}
62
63static inline struct batadv_hard_iface *
64batadv_primary_if_get_selected(struct batadv_priv *bat_priv)
65{
66 struct batadv_hard_iface *hard_iface;
67
68 rcu_read_lock();
69 hard_iface = rcu_dereference(bat_priv->primary_if);
70 if (!hard_iface)
71 goto out;
72
73 if (!atomic_inc_not_zero(&hard_iface->refcount))
74 hard_iface = NULL;
75
76out:
77 rcu_read_unlock();
78 return hard_iface;
79}
80
81#endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */