Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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}
34
35SHOW_FMT(index, "%d", wiphy_idx);
36SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
37SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
38
39static ssize_t name_show(struct device *dev,
40 struct device_attribute *attr,
41 char *buf) {
42 struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
43 return sprintf(buf, "%s\n", dev_name(&wiphy->dev));
44}
45
46
47static ssize_t addresses_show(struct device *dev,
48 struct device_attribute *attr,
49 char *buf)
50{
51 struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
52 char *start = buf;
53 int i;
54
55 if (!wiphy->addresses)
56 return sprintf(buf, "%pM\n", wiphy->perm_addr);
57
58 for (i = 0; i < wiphy->n_addresses; i++)
59 buf += sprintf(buf, "%pM\n", &wiphy->addresses[i].addr);
60
61 return buf - start;
62}
63
64static struct device_attribute ieee80211_dev_attrs[] = {
65 __ATTR_RO(index),
66 __ATTR_RO(macaddress),
67 __ATTR_RO(address_mask),
68 __ATTR_RO(addresses),
69 __ATTR_RO(name),
70 {}
71};
72
73static void wiphy_dev_release(struct device *dev)
74{
75 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
76
77 cfg80211_dev_free(rdev);
78}
79
80static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
81{
82 /* TODO, we probably need stuff here */
83 return 0;
84}
85
86static int wiphy_suspend(struct device *dev, pm_message_t state)
87{
88 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
89 int ret = 0;
90
91 rdev->suspend_at = get_seconds();
92
93 if (rdev->ops->suspend) {
94 rtnl_lock();
95 if (rdev->wiphy.registered)
96 ret = rdev_suspend(rdev);
97 rtnl_unlock();
98 }
99
100 return ret;
101}
102
103static 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 cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
110
111 if (rdev->ops->resume) {
112 rtnl_lock();
113 if (rdev->wiphy.registered)
114 ret = rdev_resume(rdev);
115 rtnl_unlock();
116 }
117
118 return ret;
119}
120
121static const void *wiphy_namespace(struct device *d)
122{
123 struct wiphy *wiphy = container_of(d, struct wiphy, dev);
124
125 return wiphy_net(wiphy);
126}
127
128struct class ieee80211_class = {
129 .name = "ieee80211",
130 .owner = THIS_MODULE,
131 .dev_release = wiphy_dev_release,
132 .dev_attrs = ieee80211_dev_attrs,
133 .dev_uevent = wiphy_uevent,
134 .suspend = wiphy_suspend,
135 .resume = wiphy_resume,
136 .ns_type = &net_ns_type_operations,
137 .namespace = wiphy_namespace,
138};
139
140int wiphy_sysfs_init(void)
141{
142 return class_register(&ieee80211_class);
143}
144
145void wiphy_sysfs_exit(void)
146{
147 class_unregister(&ieee80211_class);
148}