summaryrefslogblamecommitdiff
path: root/net/batman-adv/hard-interface.h
blob: 20e09db29d1578f8ec75af81aa3ce6428308996a (plain) (tree) 
c6c8fea29769 ^

567db7b0b7c0 ^

c6c8fea29769 ^






















e8958dbf0da3 ^








c6c8fea29769 ^

9563877ea52e ^

c6c8fea29769 ^

747e4221a03c ^

9563877ea52e ^









c6c8fea29769 ^

e6c10f433af9 ^

c6c8fea29769 ^

e6c10f433af9 ^

9563877ea52e ^

c6c8fea29769 ^


32ae9b221e78 ^


















c6c8fea29769 ^

1

2

3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

25
26
27
28
29
30
31
32

33

34

35

36

37
38
39
40
41
42
43
44
45

46

47

48

49

50

51
52

53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70

71

  
                                                     





















                                                                      







                           
 
                                                     
 
                  








                                                                    
 
                                                                 
 
                                                       
                                                                   

 

















                                                                          
                                              
/*
 * Copyright (C) 2007-2012 B.A.T.M.A.N. contributors:
 *
 * Marek Lindner, Simon Wunderlich
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 *
 */

#ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_
#define _NET_BATMAN_ADV_HARD_INTERFACE_H_

enum hard_if_state {
	IF_NOT_IN_USE,
	IF_TO_BE_REMOVED,
	IF_INACTIVE,
	IF_ACTIVE,
	IF_TO_BE_ACTIVATED,
	IF_I_WANT_YOU
};

extern struct notifier_block batadv_hard_if_notifier;

struct hard_iface*
batadv_hardif_get_by_netdev(const struct net_device *net_dev);
int batadv_hardif_enable_interface(struct hard_iface *hard_iface,
				   const char *iface_name);
void batadv_hardif_disable_interface(struct hard_iface *hard_iface);
void batadv_hardif_remove_interfaces(void);
int batadv_hardif_min_mtu(struct net_device *soft_iface);
void batadv_update_min_mtu(struct net_device *soft_iface);
void batadv_hardif_free_rcu(struct rcu_head *rcu);
bool batadv_is_wifi_iface(int ifindex);

static inline void hardif_free_ref(struct hard_iface *hard_iface)
{
	if (atomic_dec_and_test(&hard_iface->refcount))
		call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu);
}

static inline struct hard_iface *primary_if_get_selected(
						struct bat_priv *bat_priv)
{
	struct hard_iface *hard_iface;

	rcu_read_lock();
	hard_iface = rcu_dereference(bat_priv->primary_if);
	if (!hard_iface)
		goto out;

	if (!atomic_inc_not_zero(&hard_iface->refcount))
		hard_iface = NULL;

out:
	rcu_read_unlock();
	return hard_iface;
}

#endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */