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 }; 107