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-rw-r--r--net/wireless/Kconfig3
-rw-r--r--net/wireless/Makefile4
-rw-r--r--net/wireless/core.c209
-rw-r--r--net/wireless/core.h49
-rw-r--r--net/wireless/sysfs.c80
-rw-r--r--net/wireless/sysfs.h9
6 files changed, 353 insertions, 1 deletions
diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
index ca2f05c29760..1863c0b07d45 100644
--- a/net/wireless/Kconfig
+++ b/net/wireless/Kconfig
@@ -1,3 +1,6 @@
1config CFG80211
2 tristate "Improved wireless configuration API"
3
1config WIRELESS_EXT 4config WIRELESS_EXT
2 bool "Wireless extensions" 5 bool "Wireless extensions"
3 default n 6 default n
diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index cf4e3d9726b8..3f082ffae387 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -1 +1,3 @@
1# dummy file for now 1obj-$(CONFIG_CFG80211) += cfg80211.o
2
3cfg80211-y += core.o sysfs.o
diff --git a/net/wireless/core.c b/net/wireless/core.c
new file mode 100644
index 000000000000..532e1e09e028
--- /dev/null
+++ b/net/wireless/core.c
@@ -0,0 +1,209 @@
1/*
2 * This is the linux wireless configuration interface.
3 *
4 * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7#include <linux/if.h>
8#include <linux/module.h>
9#include <linux/err.h>
10#include <linux/mutex.h>
11#include <linux/list.h>
12#include <linux/nl80211.h>
13#include <linux/debugfs.h>
14#include <linux/notifier.h>
15#include <linux/device.h>
16#include <net/genetlink.h>
17#include <net/cfg80211.h>
18#include <net/wireless.h>
19#include "core.h"
20#include "sysfs.h"
21
22/* name for sysfs, %d is appended */
23#define PHY_NAME "phy"
24
25MODULE_AUTHOR("Johannes Berg");
26MODULE_LICENSE("GPL");
27MODULE_DESCRIPTION("wireless configuration support");
28
29/* RCU might be appropriate here since we usually
30 * only read the list, and that can happen quite
31 * often because we need to do it for each command */
32LIST_HEAD(cfg80211_drv_list);
33DEFINE_MUTEX(cfg80211_drv_mutex);
34static int wiphy_counter;
35
36/* for debugfs */
37static struct dentry *ieee80211_debugfs_dir;
38
39/* exported functions */
40
41struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv)
42{
43 struct cfg80211_registered_device *drv;
44 int alloc_size;
45
46 alloc_size = sizeof(*drv) + sizeof_priv;
47
48 drv = kzalloc(alloc_size, GFP_KERNEL);
49 if (!drv)
50 return NULL;
51
52 drv->ops = ops;
53
54 mutex_lock(&cfg80211_drv_mutex);
55
56 if (unlikely(wiphy_counter<0)) {
57 /* ugh, wrapped! */
58 kfree(drv);
59 return NULL;
60 }
61 drv->idx = wiphy_counter;
62
63 /* give it a proper name */
64 snprintf(drv->wiphy.dev.bus_id, BUS_ID_SIZE,
65 PHY_NAME "%d", drv->idx);
66
67 /* now increase counter for the next time */
68 wiphy_counter++;
69 mutex_unlock(&cfg80211_drv_mutex);
70
71 mutex_init(&drv->mtx);
72 mutex_init(&drv->devlist_mtx);
73 INIT_LIST_HEAD(&drv->netdev_list);
74
75 device_initialize(&drv->wiphy.dev);
76 drv->wiphy.dev.class = &ieee80211_class;
77 drv->wiphy.dev.platform_data = drv;
78
79 return &drv->wiphy;
80}
81EXPORT_SYMBOL(wiphy_new);
82
83int wiphy_register(struct wiphy *wiphy)
84{
85 struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy);
86 int res;
87
88 mutex_lock(&cfg80211_drv_mutex);
89
90
91 res = device_add(&drv->wiphy.dev);
92 if (res)
93 goto out_unlock;
94
95 list_add(&drv->list, &cfg80211_drv_list);
96
97 /* add to debugfs */
98 drv->wiphy.debugfsdir =
99 debugfs_create_dir(wiphy_name(&drv->wiphy),
100 ieee80211_debugfs_dir);
101
102 res = 0;
103out_unlock:
104 mutex_unlock(&cfg80211_drv_mutex);
105 return res;
106}
107EXPORT_SYMBOL(wiphy_register);
108
109void wiphy_unregister(struct wiphy *wiphy)
110{
111 struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy);
112
113 mutex_lock(&cfg80211_drv_mutex);
114
115 /* hold registered driver mutex during list removal as well
116 * to make sure no commands are in progress at the moment */
117 mutex_lock(&drv->mtx);
118 list_del(&drv->list);
119 mutex_unlock(&drv->mtx);
120
121 device_del(&drv->wiphy.dev);
122 debugfs_remove(drv->wiphy.debugfsdir);
123
124 mutex_unlock(&cfg80211_drv_mutex);
125}
126EXPORT_SYMBOL(wiphy_unregister);
127
128void cfg80211_dev_free(struct cfg80211_registered_device *drv)
129{
130 mutex_destroy(&drv->mtx);
131 mutex_destroy(&drv->devlist_mtx);
132 kfree(drv);
133}
134
135void wiphy_free(struct wiphy *wiphy)
136{
137 put_device(&wiphy->dev);
138}
139EXPORT_SYMBOL(wiphy_free);
140
141static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
142 unsigned long state,
143 void *ndev)
144{
145 struct net_device *dev = ndev;
146 struct cfg80211_registered_device *rdev;
147
148 if (!dev->ieee80211_ptr)
149 return 0;
150
151 rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy);
152
153 switch (state) {
154 case NETDEV_REGISTER:
155 mutex_lock(&rdev->devlist_mtx);
156 list_add(&dev->ieee80211_ptr->list, &rdev->netdev_list);
157 if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj,
158 "phy80211")) {
159 printk(KERN_ERR "wireless: failed to add phy80211 "
160 "symlink to netdev!\n");
161 }
162 dev->ieee80211_ptr->netdev = dev;
163 mutex_unlock(&rdev->devlist_mtx);
164 break;
165 case NETDEV_UNREGISTER:
166 mutex_lock(&rdev->devlist_mtx);
167 if (!list_empty(&dev->ieee80211_ptr->list)) {
168 sysfs_remove_link(&dev->dev.kobj, "phy80211");
169 list_del_init(&dev->ieee80211_ptr->list);
170 }
171 mutex_unlock(&rdev->devlist_mtx);
172 break;
173 }
174
175 return 0;
176}
177
178static struct notifier_block cfg80211_netdev_notifier = {
179 .notifier_call = cfg80211_netdev_notifier_call,
180};
181
182static int cfg80211_init(void)
183{
184 int err = wiphy_sysfs_init();
185 if (err)
186 goto out_fail_sysfs;
187
188 err = register_netdevice_notifier(&cfg80211_netdev_notifier);
189 if (err)
190 goto out_fail_notifier;
191
192 ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL);
193
194 return 0;
195
196out_fail_notifier:
197 wiphy_sysfs_exit();
198out_fail_sysfs:
199 return err;
200}
201module_init(cfg80211_init);
202
203static void cfg80211_exit(void)
204{
205 debugfs_remove(ieee80211_debugfs_dir);
206 unregister_netdevice_notifier(&cfg80211_netdev_notifier);
207 wiphy_sysfs_exit();
208}
209module_exit(cfg80211_exit);
diff --git a/net/wireless/core.h b/net/wireless/core.h
new file mode 100644
index 000000000000..158db1edb92a
--- /dev/null
+++ b/net/wireless/core.h
@@ -0,0 +1,49 @@
1/*
2 * Wireless configuration interface internals.
3 *
4 * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
5 */
6#ifndef __NET_WIRELESS_CORE_H
7#define __NET_WIRELESS_CORE_H
8#include <linux/mutex.h>
9#include <linux/list.h>
10#include <linux/netdevice.h>
11#include <net/genetlink.h>
12#include <net/wireless.h>
13#include <net/cfg80211.h>
14
15struct cfg80211_registered_device {
16 struct cfg80211_ops *ops;
17 struct list_head list;
18 /* we hold this mutex during any call so that
19 * we cannot do multiple calls at once, and also
20 * to avoid the deregister call to proceed while
21 * any call is in progress */
22 struct mutex mtx;
23
24 /* wiphy index, internal only */
25 int idx;
26
27 /* associate netdev list */
28 struct mutex devlist_mtx;
29 struct list_head netdev_list;
30
31 /* must be last because of the way we do wiphy_priv(),
32 * and it should at least be aligned to NETDEV_ALIGN */
33 struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
34};
35
36static inline
37struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
38{
39 BUG_ON(!wiphy);
40 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
41}
42
43extern struct mutex cfg80211_drv_mutex;
44extern struct list_head cfg80211_drv_list;
45
46/* free object */
47extern void cfg80211_dev_free(struct cfg80211_registered_device *drv);
48
49#endif /* __NET_WIRELESS_CORE_H */
diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
new file mode 100644
index 000000000000..3ebae1442963
--- /dev/null
+++ b/net/wireless/sysfs.c
@@ -0,0 +1,80 @@
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
26static ssize_t _show_index(struct device *dev, struct device_attribute *attr,
27 char *buf)
28{
29 return sprintf(buf, "%d\n", dev_to_rdev(dev)->idx);
30}
31
32static ssize_t _show_permaddr(struct device *dev,
33 struct device_attribute *attr,
34 char *buf)
35{
36 char *addr = dev_to_rdev(dev)->wiphy.perm_addr;
37
38 return sprintf(buf, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
39 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
40}
41
42static struct device_attribute ieee80211_dev_attrs[] = {
43 __ATTR(index, S_IRUGO, _show_index, NULL),
44 __ATTR(macaddress, S_IRUGO, _show_permaddr, NULL),
45 {}
46};
47
48static void wiphy_dev_release(struct device *dev)
49{
50 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
51
52 cfg80211_dev_free(rdev);
53}
54
55static int wiphy_uevent(struct device *dev, char **envp,
56 int num_envp, char *buf, int size)
57{
58 /* TODO, we probably need stuff here */
59 return 0;
60}
61
62struct class ieee80211_class = {
63 .name = "ieee80211",
64 .owner = THIS_MODULE,
65 .dev_release = wiphy_dev_release,
66 .dev_attrs = ieee80211_dev_attrs,
67#ifdef CONFIG_HOTPLUG
68 .dev_uevent = wiphy_uevent,
69#endif
70};
71
72int wiphy_sysfs_init(void)
73{
74 return class_register(&ieee80211_class);
75}
76
77void wiphy_sysfs_exit(void)
78{
79 class_unregister(&ieee80211_class);
80}
diff --git a/net/wireless/sysfs.h b/net/wireless/sysfs.h
new file mode 100644
index 000000000000..65acbebd3711
--- /dev/null
+++ b/net/wireless/sysfs.h
@@ -0,0 +1,9 @@
1#ifndef __WIRELESS_SYSFS_H
2#define __WIRELESS_SYSFS_H
3
4extern int wiphy_sysfs_init(void);
5extern void wiphy_sysfs_exit(void);
6
7extern struct class ieee80211_class;
8
9#endif /* __WIRELESS_SYSFS_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-04 10:23:27 -0500