Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6.git] / net / wireless / sysfs.c
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
20 static inline struct cfg80211_registered_device *dev_to_rdev(
21         struct device *dev)
22 {
23         return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
24 }
25
26 #define SHOW_FMT(name, fmt, member)                                     \
27 static ssize_t name ## _show(struct device *dev,                        \
28                               struct device_attribute *attr,            \
29                               char *buf)                                \
30 {                                                                       \
31         return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);        \
32 }
33
34 SHOW_FMT(index, "%d", wiphy_idx);
35 SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
36 SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
37
38 static ssize_t name_show(struct device *dev,
39                          struct device_attribute *attr,
40                          char *buf) {
41         struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
42         return sprintf(buf, "%s\n", dev_name(&wiphy->dev));
43 }
44
45
46 static ssize_t addresses_show(struct device *dev,
47                               struct device_attribute *attr,
48                               char *buf)
49 {
50         struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
51         char *start = buf;
52         int i;
53
54         if (!wiphy->addresses)
55                 return sprintf(buf, "%pM\n", wiphy->perm_addr);
56
57         for (i = 0; i < wiphy->n_addresses; i++)
58                 buf += sprintf(buf, "%pM\n", &wiphy->addresses[i].addr);
59
60         return buf - start;
61 }
62
63 static struct device_attribute ieee80211_dev_attrs[] = {
64         __ATTR_RO(index),
65         __ATTR_RO(macaddress),
66         __ATTR_RO(address_mask),
67         __ATTR_RO(addresses),
68         __ATTR_RO(name),
69         {}
70 };
71
72 static void wiphy_dev_release(struct device *dev)
73 {
74         struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
75
76         cfg80211_dev_free(rdev);
77 }
78
79 #ifdef CONFIG_HOTPLUG
80 static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
81 {
82         /* TODO, we probably need stuff here */
83         return 0;
84 }
85 #endif
86
87 static int wiphy_suspend(struct device *dev, pm_message_t state)
88 {
89         struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
90         int ret = 0;
91
92         rdev->suspend_at = get_seconds();
93
94         if (rdev->ops->suspend) {
95                 rtnl_lock();
96                 ret = rdev->ops->suspend(&rdev->wiphy, rdev->wowlan);
97                 rtnl_unlock();
98         }
99
100         return ret;
101 }
102
103 static int wiphy_resume(struct device *dev)
104 {
105         struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
106         int ret = 0;
107
108         /* Age scan results with time spent in suspend */
109         spin_lock_bh(&rdev->bss_lock);
110         cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
111         spin_unlock_bh(&rdev->bss_lock);
112
113         if (rdev->ops->resume) {
114                 rtnl_lock();
115                 ret = rdev->ops->resume(&rdev->wiphy);
116                 rtnl_unlock();
117         }
118
119         return ret;
120 }
121
122 static const void *wiphy_namespace(struct device *d)
123 {
124         struct wiphy *wiphy = container_of(d, struct wiphy, dev);
125
126         return wiphy_net(wiphy);
127 }
128
129 struct class ieee80211_class = {
130         .name = "ieee80211",
131         .owner = THIS_MODULE,
132         .dev_release = wiphy_dev_release,
133         .dev_attrs = ieee80211_dev_attrs,
134 #ifdef CONFIG_HOTPLUG
135         .dev_uevent = wiphy_uevent,
136 #endif
137         .suspend = wiphy_suspend,
138         .resume = wiphy_resume,
139         .ns_type = &net_ns_type_operations,
140         .namespace = wiphy_namespace,
141 };
142
143 int wiphy_sysfs_init(void)
144 {
145         return class_register(&ieee80211_class);
146 }
147
148 void wiphy_sysfs_exit(void)
149 {
150         class_unregister(&ieee80211_class);
151 }