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
86#ifdef CONFIG_PM
87static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
88{
89 struct wireless_dev *wdev;
90
91 list_for_each_entry(wdev, &rdev->wdev_list, list)
92 cfg80211_leave(rdev, wdev);
93}
94
95static int wiphy_suspend(struct device *dev, pm_message_t state)
96{
97 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
98 int ret = 0;
99
100 rdev->suspend_at = get_seconds();
101
102 rtnl_lock();
103 if (rdev->wiphy.registered) {
104 if (!rdev->wiphy.wowlan_config)
105 cfg80211_leave_all(rdev);
106 if (rdev->ops->suspend)
107 ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
108 if (ret == 1) {
109 /* Driver refuse to configure wowlan */
110 cfg80211_leave_all(rdev);
111 ret = rdev_suspend(rdev, NULL);
112 }
113 }
114 rtnl_unlock();
115
116 return ret;
117}
118
119static int wiphy_resume(struct device *dev)
120{
121 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
122 int ret = 0;
123
124 /* Age scan results with time spent in suspend */
125 cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
126
127 if (rdev->ops->resume) {
128 rtnl_lock();
129 if (rdev->wiphy.registered)
130 ret = rdev_resume(rdev);
131 rtnl_unlock();
132 }
133
134 return ret;
135}
136#endif
137
138static const void *wiphy_namespace(struct device *d)
139{
140 struct wiphy *wiphy = container_of(d, struct wiphy, dev);
141
142 return wiphy_net(wiphy);
143}
144
145struct class ieee80211_class = {
146 .name = "ieee80211",
147 .owner = THIS_MODULE,
148 .dev_release = wiphy_dev_release,
149 .dev_attrs = ieee80211_dev_attrs,
150 .dev_uevent = wiphy_uevent,
151#ifdef CONFIG_PM
152 .suspend = wiphy_suspend,
153 .resume = wiphy_resume,
154#endif
155 .ns_type = &net_ns_type_operations,
156 .namespace = wiphy_namespace,
157};
158
159int wiphy_sysfs_init(void)
160{
161 return class_register(&ieee80211_class);
162}
163
164void wiphy_sysfs_exit(void)
165{
166 class_unregister(&ieee80211_class);
167}