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Merge tag 'v4.12-rc3' into for-linus
[mirror_ubuntu-bionic-kernel.git] / net / wireless / sysfs.c
CommitLineData
704232c2
JB
1/*
2 * This file provides /sys/class/ieee80211/<wiphy name>/
3 * and some default attributes.
4 *
5 * Copyright 2005-2006 Jiri Benc <jbenc@suse.cz>
6 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
7 *
8 * This file is GPLv2 as found in COPYING.
9 */
10
11#include <linux/device.h>
12#include <linux/module.h>
13#include <linux/netdevice.h>
14#include <linux/nl80211.h>
15#include <linux/rtnetlink.h>
16#include <net/cfg80211.h>
17#include "sysfs.h"
18#include "core.h"
e35e4d28 19#include "rdev-ops.h"
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20
21static inline struct cfg80211_registered_device *dev_to_rdev(
22 struct device *dev)
23{
24 return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
25}
26
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JB
27#define SHOW_FMT(name, fmt, member) \
28static ssize_t name ## _show(struct device *dev, \
29 struct device_attribute *attr, \
30 char *buf) \
31{ \
32 return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member); \
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GKH
33} \
34static DEVICE_ATTR_RO(name)
704232c2 35
b5850a7a 36SHOW_FMT(index, "%d", wiphy_idx);
4f6d4d1e 37SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
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38SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
39
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40static ssize_t name_show(struct device *dev,
41 struct device_attribute *attr,
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42 char *buf)
43{
cfd8e12f 44 struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
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45
46 return sprintf(buf, "%s\n", wiphy_name(wiphy));
cfd8e12f 47}
f0bc99c8 48static DEVICE_ATTR_RO(name);
cfd8e12f 49
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50static ssize_t addresses_show(struct device *dev,
51 struct device_attribute *attr,
52 char *buf)
53{
54 struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
55 char *start = buf;
56 int i;
57
58 if (!wiphy->addresses)
59 return sprintf(buf, "%pM\n", wiphy->perm_addr);
60
61 for (i = 0; i < wiphy->n_addresses; i++)
ec53c832 62 buf += sprintf(buf, "%pM\n", wiphy->addresses[i].addr);
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63
64 return buf - start;
65}
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66static DEVICE_ATTR_RO(addresses);
67
68static struct attribute *ieee80211_attrs[] = {
69 &dev_attr_index.attr,
70 &dev_attr_macaddress.attr,
71 &dev_attr_address_mask.attr,
72 &dev_attr_addresses.attr,
73 &dev_attr_name.attr,
74 NULL,
704232c2 75};
f0bc99c8 76ATTRIBUTE_GROUPS(ieee80211);
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77
78static void wiphy_dev_release(struct device *dev)
79{
80 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
81
82 cfg80211_dev_free(rdev);
83}
84
7eff2e7a 85static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
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86{
87 /* TODO, we probably need stuff here */
88 return 0;
89}
90
262918d8 91#ifdef CONFIG_PM_SLEEP
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92static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
93{
94 struct wireless_dev *wdev;
95
53873f13 96 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
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97 cfg80211_leave(rdev, wdev);
98}
99
262918d8 100static int wiphy_suspend(struct device *dev)
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101{
102 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
103 int ret = 0;
104
cb3a8eec
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105 rdev->suspend_at = get_seconds();
106
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107 rtnl_lock();
108 if (rdev->wiphy.registered) {
e1957dba 109 if (!rdev->wiphy.wowlan_config) {
81256969 110 cfg80211_leave_all(rdev);
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111 cfg80211_process_rdev_events(rdev);
112 }
81256969 113 if (rdev->ops->suspend)
6abb9cb9 114 ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
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115 if (ret == 1) {
116 /* Driver refuse to configure wowlan */
117 cfg80211_leave_all(rdev);
e1957dba 118 cfg80211_process_rdev_events(rdev);
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119 ret = rdev_suspend(rdev, NULL);
120 }
0378b3f1 121 }
81256969 122 rtnl_unlock();
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123
124 return ret;
125}
126
127static int wiphy_resume(struct device *dev)
128{
129 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
130 int ret = 0;
131
cb3a8eec 132 /* Age scan results with time spent in suspend */
cb3a8eec 133 cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
cb3a8eec 134
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135 rtnl_lock();
136 if (rdev->wiphy.registered && rdev->ops->resume)
137 ret = rdev_resume(rdev);
138 rtnl_unlock();
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139
140 return ret;
141}
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142
143static SIMPLE_DEV_PM_OPS(wiphy_pm_ops, wiphy_suspend, wiphy_resume);
144#define WIPHY_PM_OPS (&wiphy_pm_ops)
145#else
146#define WIPHY_PM_OPS NULL
6abb9cb9 147#endif
0378b3f1 148
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149static const void *wiphy_namespace(struct device *d)
150{
151 struct wiphy *wiphy = container_of(d, struct wiphy, dev);
152
153 return wiphy_net(wiphy);
154}
155
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156struct class ieee80211_class = {
157 .name = "ieee80211",
158 .owner = THIS_MODULE,
159 .dev_release = wiphy_dev_release,
f0bc99c8 160 .dev_groups = ieee80211_groups,
704232c2 161 .dev_uevent = wiphy_uevent,
262918d8 162 .pm = WIPHY_PM_OPS,
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163 .ns_type = &net_ns_type_operations,
164 .namespace = wiphy_namespace,
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165};
166
167int wiphy_sysfs_init(void)
168{
169 return class_register(&ieee80211_class);
170}
171
172void wiphy_sysfs_exit(void)
173{
174 class_unregister(&ieee80211_class);
175}