summaryrefslogtreecommitdiffstats
path: root/net/wireless/sysfs.c
blob: 360a42c6f69494b368ebab58be31ef058be79477 (plain)
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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
/*
 * This file provides /sys/class/ieee80211/<wiphy name>/
 * and some default attributes.
 *
 * Copyright 2005-2006	Jiri Benc <jbenc@suse.cz>
 * Copyright 2006	Johannes Berg <johannes@sipsolutions.net>
 *
 * This file is GPLv2 as found in COPYING.
 */

#include <linux/device.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
#include <net/cfg80211.h>
#include "sysfs.h"
#include "core.h"
#include "rdev-ops.h"

static inline struct cfg80211_registered_device *dev_to_rdev(
	struct device *dev)
{
	return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
}

#define SHOW_FMT(name, fmt, member)					\
static ssize_t name ## _show(struct device *dev,			\
			      struct device_attribute *attr,		\
			      char *buf)				\
{									\
	return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);	\
}

SHOW_FMT(index, "%d", wiphy_idx);
SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);

static ssize_t name_show(struct device *dev,
			 struct device_attribute *attr,
			 char *buf) {
	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
	return sprintf(buf, "%s\n", dev_name(&wiphy->dev));
}


static ssize_t addresses_show(struct device *dev,
			      struct device_attribute *attr,
			      char *buf)
{
	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
	char *start = buf;
	int i;

	if (!wiphy->addresses)
		return sprintf(buf, "%pM\n", wiphy->perm_addr);

	for (i = 0; i < wiphy->n_addresses; i++)
		buf += sprintf(buf, "%pM\n", &wiphy->addresses[i].addr);

	return buf - start;
}

static struct device_attribute ieee80211_dev_attrs[] = {
	__ATTR_RO(index),
	__ATTR_RO(macaddress),
	__ATTR_RO(address_mask),
	__ATTR_RO(addresses),
	__ATTR_RO(name),
	{}
};

static void wiphy_dev_release(struct device *dev)
{
	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);

	cfg80211_dev_free(rdev);
}

static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
{
	/* TODO, we probably need stuff here */
	return 0;
}

static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
{
	struct wireless_dev *wdev;

	list_for_each_entry(wdev, &rdev->wdev_list, list)
		cfg80211_leave(rdev, wdev);
}

#ifdef CONFIG_PM
static int wiphy_suspend(struct device *dev, pm_message_t state)
{
	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	int ret = 0;

	rdev->suspend_at = get_seconds();

	rtnl_lock();
	if (rdev->wiphy.registered) {
		if (!rdev->wiphy.wowlan_config)
			cfg80211_leave_all(rdev);
		if (rdev->ops->suspend)
			ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
		if (ret == 1) {
			/* Driver refuse to configure wowlan */
			cfg80211_leave_all(rdev);
			ret = rdev_suspend(rdev, NULL);
		}
	}
	rtnl_unlock();

	return ret;
}

static int wiphy_resume(struct device *dev)
{
	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	int ret = 0;

	/* Age scan results with time spent in suspend */
	cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);

	if (rdev->ops->resume) {
		rtnl_lock();
		if (rdev->wiphy.registered)
			ret = rdev_resume(rdev);
		rtnl_unlock();
	}

	return ret;
}
#endif

static const void *wiphy_namespace(struct device *d)
{
	struct wiphy *wiphy = container_of(d, struct wiphy, dev);

	return wiphy_net(wiphy);
}

struct class ieee80211_class = {
	.name = "ieee80211",
	.owner = THIS_MODULE,
	.dev_release = wiphy_dev_release,
	.dev_attrs = ieee80211_dev_attrs,
	.dev_uevent = wiphy_uevent,
#ifdef CONFIG_PM
	.suspend = wiphy_suspend,
	.resume = wiphy_resume,
#endif
	.ns_type = &net_ns_type_operations,
	.namespace = wiphy_namespace,
};

int wiphy_sysfs_init(void)
{
	return class_register(&ieee80211_class);
}

void wiphy_sysfs_exit(void)
{
	class_unregister(&ieee80211_class);
}
OpenPOWER on IntegriCloud