Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
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"
19#include "rdev-ops.h"
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
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); \
33} \
34static DEVICE_ATTR_RO(name)
35
36SHOW_FMT(index, "%d", wiphy_idx);
37SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
38SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
39
40static ssize_t name_show(struct device *dev,
41 struct device_attribute *attr,
42 char *buf) {
43 struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
44 return sprintf(buf, "%s\n", dev_name(&wiphy->dev));
45}
46static DEVICE_ATTR_RO(name);
47
48static ssize_t addresses_show(struct device *dev,
49 struct device_attribute *attr,
50 char *buf)
51{
52 struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
53 char *start = buf;
54 int i;
55
56 if (!wiphy->addresses)
57 return sprintf(buf, "%pM\n", wiphy->perm_addr);
58
59 for (i = 0; i < wiphy->n_addresses; i++)
60 buf += sprintf(buf, "%pM\n", wiphy->addresses[i].addr);
61
62 return buf - start;
63}
64static DEVICE_ATTR_RO(addresses);
65
66static struct attribute *ieee80211_attrs[] = {
67 &dev_attr_index.attr,
68 &dev_attr_macaddress.attr,
69 &dev_attr_address_mask.attr,
70 &dev_attr_addresses.attr,
71 &dev_attr_name.attr,
72 NULL,
73};
74ATTRIBUTE_GROUPS(ieee80211);
75
76static void wiphy_dev_release(struct device *dev)
77{
78 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
79
80 cfg80211_dev_free(rdev);
81}
82
83static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
84{
85 /* TODO, we probably need stuff here */
86 return 0;
87}
88
89#ifdef CONFIG_PM_SLEEP
90static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
91{
92 struct wireless_dev *wdev;
93
94 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
95 cfg80211_leave(rdev, wdev);
96}
97
98static int wiphy_suspend(struct device *dev)
99{
100 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
101 int ret = 0;
102
103 rdev->suspend_at = get_seconds();
104
105 rtnl_lock();
106 if (rdev->wiphy.registered) {
107 if (!rdev->wiphy.wowlan_config) {
108 cfg80211_leave_all(rdev);
109 cfg80211_process_rdev_events(rdev);
110 }
111 if (rdev->ops->suspend)
112 ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
113 if (ret == 1) {
114 /* Driver refuse to configure wowlan */
115 cfg80211_leave_all(rdev);
116 cfg80211_process_rdev_events(rdev);
117 ret = rdev_suspend(rdev, NULL);
118 }
119 }
120 rtnl_unlock();
121
122 return ret;
123}
124
125static int wiphy_resume(struct device *dev)
126{
127 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
128 int ret = 0;
129
130 /* Age scan results with time spent in suspend */
131 cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
132
133 if (rdev->ops->resume) {
134 rtnl_lock();
135 if (rdev->wiphy.registered)
136 ret = rdev_resume(rdev);
137 rtnl_unlock();
138 }
139
140 return ret;
141}
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
147#endif
148
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
156struct class ieee80211_class = {
157 .name = "ieee80211",
158 .owner = THIS_MODULE,
159 .dev_release = wiphy_dev_release,
160 .dev_groups = ieee80211_groups,
161 .dev_uevent = wiphy_uevent,
162 .pm = WIPHY_PM_OPS,
163 .ns_type = &net_ns_type_operations,
164 .namespace = wiphy_namespace,
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}