9e2bc1fd0237dd83dc1bf923c3cb773bce79cf7d
[linux-2.6.git] / net / mac80211 / cfg.c
1 /*
2  * mac80211 configuration hooks for cfg80211
3  *
4  * Copyright 2006       Johannes Berg <johannes@sipsolutions.net>
5  *
6  * This file is GPLv2 as found in COPYING.
7  */
8
9 #include <linux/nl80211.h>
10 #include <linux/rtnetlink.h>
11 #include <net/net_namespace.h>
12 #include <net/cfg80211.h>
13 #include "ieee80211_i.h"
14 #include "cfg.h"
15
16 static enum ieee80211_if_types
17 nl80211_type_to_mac80211_type(enum nl80211_iftype type)
18 {
19         switch (type) {
20         case NL80211_IFTYPE_UNSPECIFIED:
21                 return IEEE80211_IF_TYPE_STA;
22         case NL80211_IFTYPE_ADHOC:
23                 return IEEE80211_IF_TYPE_IBSS;
24         case NL80211_IFTYPE_STATION:
25                 return IEEE80211_IF_TYPE_STA;
26         case NL80211_IFTYPE_MONITOR:
27                 return IEEE80211_IF_TYPE_MNTR;
28         default:
29                 return IEEE80211_IF_TYPE_INVALID;
30         }
31 }
32
33 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
34                                enum nl80211_iftype type)
35 {
36         struct ieee80211_local *local = wiphy_priv(wiphy);
37         enum ieee80211_if_types itype;
38
39         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
40                 return -ENODEV;
41
42         itype = nl80211_type_to_mac80211_type(type);
43         if (itype == IEEE80211_IF_TYPE_INVALID)
44                 return -EINVAL;
45
46         return ieee80211_if_add(local->mdev, name, NULL, itype);
47 }
48
49 static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
50 {
51         struct ieee80211_local *local = wiphy_priv(wiphy);
52         struct net_device *dev;
53         char *name;
54
55         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
56                 return -ENODEV;
57
58         /* we're under RTNL */
59         dev = __dev_get_by_index(&init_net, ifindex);
60         if (!dev)
61                 return 0;
62
63         name = dev->name;
64
65         return ieee80211_if_remove(local->mdev, name, -1);
66 }
67
68 static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
69                                   enum nl80211_iftype type)
70 {
71         struct ieee80211_local *local = wiphy_priv(wiphy);
72         struct net_device *dev;
73         enum ieee80211_if_types itype;
74         struct ieee80211_sub_if_data *sdata;
75
76         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
77                 return -ENODEV;
78
79         /* we're under RTNL */
80         dev = __dev_get_by_index(&init_net, ifindex);
81         if (!dev)
82                 return -ENODEV;
83
84         if (netif_running(dev))
85                 return -EBUSY;
86
87         itype = nl80211_type_to_mac80211_type(type);
88         if (itype == IEEE80211_IF_TYPE_INVALID)
89                 return -EINVAL;
90
91         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
92
93         if (sdata->type == IEEE80211_IF_TYPE_VLAN)
94                 return -EOPNOTSUPP;
95
96         ieee80211_if_reinit(dev);
97         ieee80211_if_set_type(dev, itype);
98
99         return 0;
100 }
101
102 struct cfg80211_ops mac80211_config_ops = {
103         .add_virtual_intf = ieee80211_add_iface,
104         .del_virtual_intf = ieee80211_del_iface,
105         .change_virtual_intf = ieee80211_change_iface,
106 };