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
20static 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) \
27static 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
34SHOW_FMT(index, "%d", wiphy_idx);
35SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
36
37static struct device_attribute ieee80211_dev_attrs[] = {
38 __ATTR_RO(index),
39 __ATTR_RO(macaddress),
40 {}
41};
42
43static void wiphy_dev_release(struct device *dev)
44{
45 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
46
47 cfg80211_dev_free(rdev);
48}
49
50#ifdef CONFIG_HOTPLUG
51static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
52{
53 /* TODO, we probably need stuff here */
54 return 0;
55}
56#endif
57
58static int wiphy_suspend(struct device *dev, pm_message_t state)
59{
60 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
61 int ret = 0;
62
63 rdev->suspend_at = get_seconds();
64
65 if (rdev->ops->suspend) {
66 rtnl_lock();
67 ret = rdev->ops->suspend(&rdev->wiphy);
68 rtnl_unlock();
69 }
70
71 return ret;
72}
73
74static int wiphy_resume(struct device *dev)
75{
76 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
77 int ret = 0;
78
79 /* Age scan results with time spent in suspend */
80 spin_lock_bh(&rdev->bss_lock);
81 cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
82 spin_unlock_bh(&rdev->bss_lock);
83
84 if (rdev->ops->resume) {
85 rtnl_lock();
86 ret = rdev->ops->resume(&rdev->wiphy);
87 rtnl_unlock();
88 }
89
90 return ret;
91}
92
93struct class ieee80211_class = {
94 .name = "ieee80211",
95 .owner = THIS_MODULE,
96 .dev_release = wiphy_dev_release,
97 .dev_attrs = ieee80211_dev_attrs,
98#ifdef CONFIG_HOTPLUG
99 .dev_uevent = wiphy_uevent,
100#endif
101 .suspend = wiphy_suspend,
102 .resume = wiphy_resume,
103};
104
105int wiphy_sysfs_init(void)
106{
107 return class_register(&ieee80211_class);
108}
109
110void wiphy_sysfs_exit(void)
111{
112 class_unregister(&ieee80211_class);
113}