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); 244