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