net/wireless/wext-compat.c

   1 /*
   2  * cfg80211 - wext compat code
   3  *
   4  * This is temporary code until all wireless functionality is migrated
   5  * into cfg80211, when that happens all the exports here go away and
   6  * we directly assign the wireless handlers of wireless interfaces.
   7  *
   8  * Copyright 2008       Johannes Berg <johannes@sipsolutions.net>
   9  */
  10
  11 #include <linux/wireless.h>
  12 #include <linux/nl80211.h>
  13 #include <net/iw_handler.h>
  14 #include <net/wireless.h>
  15 #include <net/cfg80211.h>
  16 #include "core.h"
  17
  18 int cfg80211_wext_giwname(struct net_device *dev,
  19                           struct iw_request_info *info,
  20                           char *name, char *extra)
  21 {
  22         struct wireless_dev *wdev = dev->ieee80211_ptr;
  23         struct ieee80211_supported_band *sband;
  24         bool is_ht = false, is_a = false, is_b = false, is_g = false;
  25
  26         if (!wdev)
  27                 return -EOPNOTSUPP;
  28
  29         sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
  30         if (sband) {
  31                 is_a = true;
  32                 is_ht |= sband->ht_cap.ht_supported;
  33         }
  34
  35         sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
  36         if (sband) {
  37                 int i;
  38                 /* Check for mandatory rates */
  39                 for (i = 0; i < sband->n_bitrates; i++) {
  40                         if (sband->bitrates[i].bitrate == 10)
  41                                 is_b = true;
  42                         if (sband->bitrates[i].bitrate == 60)
  43                                 is_g = true;
  44                 }
  45                 is_ht |= sband->ht_cap.ht_supported;
  46         }
  47
  48         strcpy(name, "IEEE 802.11");
  49         if (is_a)
  50                 strcat(name, "a");
  51         if (is_b)
  52                 strcat(name, "b");
  53         if (is_g)
  54                 strcat(name, "g");
  55         if (is_ht)
  56                 strcat(name, "n");
  57
  58         return 0;
  59 }
  60 EXPORT_SYMBOL(cfg80211_wext_giwname);
  61
  62 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  63                           u32 *mode, char *extra)
  64 {
  65         struct wireless_dev *wdev = dev->ieee80211_ptr;
  66         struct cfg80211_registered_device *rdev;
  67         struct vif_params vifparams;
  68         enum nl80211_iftype type;
  69         int ret;
  70
  71         if (!wdev)
  72                 return -EOPNOTSUPP;
  73
  74         rdev = wiphy_to_dev(wdev->wiphy);
  75
  76         if (!rdev->ops->change_virtual_intf)
  77                 return -EOPNOTSUPP;
  78
  79         /* don't support changing VLANs, you just re-create them */
  80         if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
  81                 return -EOPNOTSUPP;
  82
  83         switch (*mode) {
  84         case IW_MODE_INFRA:
  85                 type = NL80211_IFTYPE_STATION;
  86                 break;
  87         case IW_MODE_ADHOC:
  88                 type = NL80211_IFTYPE_ADHOC;
  89                 break;
  90         case IW_MODE_REPEAT:
  91                 type = NL80211_IFTYPE_WDS;
  92                 break;
  93         case IW_MODE_MONITOR:
  94                 type = NL80211_IFTYPE_MONITOR;
  95                 break;
  96         default:
  97                 return -EINVAL;
  98         }
  99
 100         if (type == wdev->iftype)
 101                 return 0;
 102
 103         memset(&vifparams, 0, sizeof(vifparams));
 104
 105         ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev->ifindex, type,
 106                                              NULL, &vifparams);
 107         WARN_ON(!ret && wdev->iftype != type);
 108
 109         return ret;
 110 }
 111 EXPORT_SYMBOL(cfg80211_wext_siwmode);
 112
 113 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
 114                           u32 *mode, char *extra)
 115 {
 116         struct wireless_dev *wdev = dev->ieee80211_ptr;
 117
 118         if (!wdev)
 119                 return -EOPNOTSUPP;
 120
 121         switch (wdev->iftype) {
 122         case NL80211_IFTYPE_AP:
 123                 *mode = IW_MODE_MASTER;
 124                 break;
 125         case NL80211_IFTYPE_STATION:
 126                 *mode = IW_MODE_INFRA;
 127                 break;
 128         case NL80211_IFTYPE_ADHOC:
 129                 *mode = IW_MODE_ADHOC;
 130                 break;
 131         case NL80211_IFTYPE_MONITOR:
 132                 *mode = IW_MODE_MONITOR;
 133                 break;
 134         case NL80211_IFTYPE_WDS:
 135                 *mode = IW_MODE_REPEAT;
 136                 break;
 137         case NL80211_IFTYPE_AP_VLAN:
 138                 *mode = IW_MODE_SECOND;         /* FIXME */
 139                 break;
 140         default:
 141                 *mode = IW_MODE_AUTO;
 142                 break;
 143         }
 144         return 0;
 145 }
 146 EXPORT_SYMBOL(cfg80211_wext_giwmode);
 147
 148
 149 int cfg80211_wext_giwrange(struct net_device *dev,
 150                            struct iw_request_info *info,
 151                            struct iw_point *data, char *extra)
 152 {
 153         struct wireless_dev *wdev = dev->ieee80211_ptr;
 154         struct iw_range *range = (struct iw_range *) extra;
 155         enum ieee80211_band band;
 156         int c = 0;
 157
 158         if (!wdev)
 159                 return -EOPNOTSUPP;
 160
 161         data->length = sizeof(struct iw_range);
 162         memset(range, 0, sizeof(struct iw_range));
 163
 164         range->we_version_compiled = WIRELESS_EXT;
 165         range->we_version_source = 21;
 166         range->retry_capa = IW_RETRY_LIMIT;
 167         range->retry_flags = IW_RETRY_LIMIT;
 168         range->min_retry = 0;
 169         range->max_retry = 255;
 170         range->min_rts = 0;
 171         range->max_rts = 2347;
 172         range->min_frag = 256;
 173         range->max_frag = 2346;
 174
 175         range->encoding_size[0] = 5;
 176         range->encoding_size[1] = 13;
 177         range->num_encoding_sizes = 2;
 178         range->max_encoding_tokens = 4;
 179
 180         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 181
 182         switch (wdev->wiphy->signal_type) {
 183         case CFG80211_SIGNAL_TYPE_NONE:
 184                 break;
 185         case CFG80211_SIGNAL_TYPE_MBM:
 186                 range->max_qual.level = -110;
 187                 range->max_qual.qual = 70;
 188                 range->avg_qual.qual = 35;
 189                 range->max_qual.updated |= IW_QUAL_DBM;
 190                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 191                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 192                 break;
 193         case CFG80211_SIGNAL_TYPE_UNSPEC:
 194                 range->max_qual.level = 100;
 195                 range->max_qual.qual = 100;
 196                 range->avg_qual.qual = 50;
 197                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 198                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 199                 break;
 200         }
 201
 202         range->avg_qual.level = range->max_qual.level / 2;
 203         range->avg_qual.noise = range->max_qual.noise / 2;
 204         range->avg_qual.updated = range->max_qual.updated;
 205
 206         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 207                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 208
 209
 210         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 211                 int i;
 212                 struct ieee80211_supported_band *sband;
 213
 214                 sband = wdev->wiphy->bands[band];
 215
 216                 if (!sband)
 217                         continue;
 218
 219                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 220                         struct ieee80211_channel *chan = &sband->channels[i];
 221
 222                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 223                                 range->freq[c].i =
 224                                         ieee80211_frequency_to_channel(
 225                                                 chan->center_freq);
 226                                 range->freq[c].m = chan->center_freq;
 227                                 range->freq[c].e = 6;
 228                                 c++;
 229                         }
 230                 }
 231         }
 232         range->num_channels = c;
 233         range->num_frequency = c;
 234
 235         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 236         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 237         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 238
 239         range->scan_capa |= IW_SCAN_CAPA_ESSID;
 240
 241         return 0;
 242 }
 243 EXPORT_SYMBOL(cfg80211_wext_giwrange);