simplify and fix adm5120 image building, fix broken FEATURES handling
[openwrt.git] / package / mac80211 / src / 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 static 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
32 static ssize_t _show_permaddr(struct device *dev,
33 struct device_attribute *attr,
34 char *buf)
35 {
36 unsigned 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
42 static ssize_t _store_add_iface(struct device *dev,
43 struct device_attribute *attr,
44 const char *buf, size_t len)
45 {
46 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
47 int res;
48
49 if (len > IFNAMSIZ)
50 return -EINVAL;
51
52 if (!rdev->ops->add_virtual_intf)
53 return -ENOSYS;
54
55 rtnl_lock();
56 res = rdev->ops->add_virtual_intf(&rdev->wiphy, (char*)buf,
57 NL80211_IFTYPE_UNSPECIFIED);
58 rtnl_unlock();
59
60 return res ? res : len;
61 }
62
63 static ssize_t _store_remove_iface(struct device *dev,
64 struct device_attribute *attr,
65 const char *buf, size_t len)
66 {
67 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
68 int res, ifidx;
69 struct net_device *netdev;
70
71 if (len > IFNAMSIZ)
72 return -EINVAL;
73
74 if (!rdev->ops->del_virtual_intf)
75 return -ENOSYS;
76
77 netdev = dev_get_by_name(buf);
78 if (!netdev)
79 return -ENODEV;
80 ifidx = netdev->ifindex;
81 dev_put(netdev);
82
83 rtnl_lock();
84 res = rdev->ops->del_virtual_intf(&rdev->wiphy, ifidx);
85 rtnl_unlock();
86
87 return res ? res : len;
88 }
89
90 static struct device_attribute ieee80211_dev_attrs[] = {
91 __ATTR(index, S_IRUGO, _show_index, NULL),
92 __ATTR(macaddress, S_IRUGO, _show_permaddr, NULL),
93 __ATTR(add_iface, S_IWUGO, NULL, _store_add_iface),
94 __ATTR(remove_iface, S_IWUGO, NULL, _store_remove_iface),
95 {}
96 };
97
98 static void wiphy_dev_release(struct device *dev)
99 {
100 struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
101
102 cfg80211_dev_free(rdev);
103 }
104
105 static int wiphy_uevent(struct device *dev, char **envp,
106 int num_envp, char *buf, int size)
107 {
108 /* TODO, we probably need stuff here */
109 return 0;
110 }
111
112 struct class ieee80211_class = {
113 .name = "ieee80211",
114 .owner = THIS_MODULE,
115 .dev_release = wiphy_dev_release,
116 .dev_attrs = ieee80211_dev_attrs,
117 #ifdef CONFIG_HOTPLUG
118 .dev_uevent = wiphy_uevent,
119 #endif
120 };
121
122 int wiphy_sysfs_init(void)
123 {
124 return class_register(&ieee80211_class);
125 }
126
127 void wiphy_sysfs_exit(void)
128 {
129 class_unregister(&ieee80211_class);
130 }
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