Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[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 addresses_show(struct device *dev,
39                               struct device_attribute *attr,
40                               char *buf)
41 {
42         struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
43         char *start = buf;
44         int i;
45
46         if (!wiphy->addresses)
47                 return sprintf(buf, "%pM\n", wiphy->perm_addr);
48
49         for (i = 0; i < wiphy->n_addresses; i++)
50                 buf += sprintf(buf, "%pM\n", &wiphy->addresses[i].addr);
51
52         return buf - start;
53 }
54
55 static struct device_attribute ieee80211_dev_attrs[] = {
56         __ATTR_RO(index),
57         __ATTR_RO(macaddress),
58         __ATTR_RO(address_mask),
59         __ATTR_RO(addresses),
60         {}
61 };
62
63 static void wiphy_dev_release(struct device *dev)
64 {
65         struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
66
67         cfg80211_dev_free(rdev);
68 }
69
70 #ifdef CONFIG_HOTPLUG
71 static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
72 {
73         /* TODO, we probably need stuff here */
74         return 0;
75 }
76 #endif
77
78 static int wiphy_suspend(struct device *dev, pm_message_t state)
79 {
80         struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
81         int ret = 0;
82
83         rdev->suspend_at = get_seconds();
84
85         if (rdev->ops->suspend) {
86                 rtnl_lock();
87                 ret = rdev->ops->suspend(&rdev->wiphy);
88                 rtnl_unlock();
89         }
90
91         return ret;
92 }
93
94 static int wiphy_resume(struct device *dev)
95 {
96         struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
97         int ret = 0;
98
99         /* Age scan results with time spent in suspend */
100         spin_lock_bh(&rdev->bss_lock);
101         cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
102         spin_unlock_bh(&rdev->bss_lock);
103
104         if (rdev->ops->resume) {
105                 rtnl_lock();
106                 ret = rdev->ops->resume(&rdev->wiphy);
107                 rtnl_unlock();
108         }
109
110         return ret;
111 }
112
113 struct class ieee80211_class = {
114         .name = "ieee80211",
115         .owner = THIS_MODULE,
116         .dev_release = wiphy_dev_release,
117         .dev_attrs = ieee80211_dev_attrs,
118 #ifdef CONFIG_HOTPLUG
119         .dev_uevent = wiphy_uevent,
120 #endif
121         .suspend = wiphy_suspend,
122         .resume = wiphy_resume,
123 };
124
125 int wiphy_sysfs_init(void)
126 {
127         return class_register(&ieee80211_class);
128 }
129
130 void wiphy_sysfs_exit(void)
131 {
132         class_unregister(&ieee80211_class);
133 }