LXR linux/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
  16static enum ieee80211_if_types
  17nl80211_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
  33static 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
  49static 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
  68static 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
 102struct 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