net/ieee80211/softmac/ieee80211softmac_wx.c

   1 /*
   2  * This file contains our _wx handlers. Make sure you EXPORT_SYMBOL_GPL them
   3  *
   4  * Copyright (c) 2005 Johannes Berg <johannes@sipsolutions.net>
   5  *                    Joseph Jezak <josejx@gentoo.org>
   6  *                    Larry Finger <Larry.Finger@lwfinger.net>
   7  *                    Danny van Dyk <kugelfang@gentoo.org>
   8  *                    Michael Buesch <mbuesch@freenet.de>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  22  *
  23  * The full GNU General Public License is included in this distribution in the
  24  * file called COPYING.
  25  */
  26
  27 #include "ieee80211softmac_priv.h"
  28
  29 #include <net/iw_handler.h>
  30
  31
  32 int
  33 ieee80211softmac_wx_trigger_scan(struct net_device *net_dev,
  34                                  struct iw_request_info *info,
  35                                  union iwreq_data *data,
  36                                  char *extra)
  37 {
  38         struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
  39         return ieee80211softmac_start_scan(sm);
  40 }
  41 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_trigger_scan);
  42
  43
  44 int
  45 ieee80211softmac_wx_get_scan_results(struct net_device *net_dev,
  46                                      struct iw_request_info *info,
  47                                      union iwreq_data *data,
  48                                      char *extra)
  49 {
  50         struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
  51         return ieee80211_wx_get_scan(sm->ieee, info, data, extra);
  52 }
  53 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_scan_results);
  54
  55 int
  56 ieee80211softmac_wx_set_essid(struct net_device *net_dev,
  57                               struct iw_request_info *info,
  58                               union iwreq_data *data,
  59                               char *extra)
  60 {
  61         struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
  62         int length = 0;
  63         unsigned long flags;
  64
  65         spin_lock_irqsave(&sm->lock, flags);
  66
  67         sm->associnfo.static_essid = 0;
  68
  69         if (data->essid.flags && data->essid.length && extra /*required?*/) {
  70                 length = min(data->essid.length - 1, IW_ESSID_MAX_SIZE);
  71                 if (length) {
  72                         memcpy(sm->associnfo.req_essid.data, extra, length);
  73                         sm->associnfo.static_essid = 1;
  74                 }
  75         }
  76         sm->associnfo.scan_retry = IEEE80211SOFTMAC_ASSOC_SCAN_RETRY_LIMIT;
  77
  78         /* set our requested ESSID length.
  79          * If applicable, we have already copied the data in */
  80         sm->associnfo.req_essid.len = length;
  81
  82         /* queue lower level code to do work (if necessary) */
  83         schedule_work(&sm->associnfo.work);
  84
  85         spin_unlock_irqrestore(&sm->lock, flags);
  86         return 0;
  87 }
  88 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_essid);
  89
  90 int
  91 ieee80211softmac_wx_get_essid(struct net_device *net_dev,
  92                               struct iw_request_info *info,
  93                               union iwreq_data *data,
  94                               char *extra)
  95 {
  96         struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
  97         unsigned long flags;
  98
  99         /* avoid getting inconsistent information */
 100         spin_lock_irqsave(&sm->lock, flags);
 101         /* If all fails, return ANY (empty) */
 102         data->essid.length = 0;
 103         data->essid.flags = 0;  /* active */
 104
 105         /* If we have a statically configured ESSID then return it */
 106         if (sm->associnfo.static_essid) {
 107                 data->essid.length = sm->associnfo.req_essid.len;
 108                 data->essid.flags = 1;  /* active */
 109                 memcpy(extra, sm->associnfo.req_essid.data, sm->associnfo.req_essid.len);
 110         }
 111
 112         /* If we're associating/associated, return that */
 113         if (sm->associated || sm->associnfo.associating) {
 114                 data->essid.length = sm->associnfo.associate_essid.len;
 115                 data->essid.flags = 1;  /* active */
 116                 memcpy(extra, sm->associnfo.associate_essid.data, sm->associnfo.associate_essid.len);
 117         }
 118         spin_unlock_irqrestore(&sm->lock, flags);
 119         return 0;
 120 }
 121 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_essid);
 122
 123 int
 124 ieee80211softmac_wx_set_rate(struct net_device *net_dev,
 125                              struct iw_request_info *info,
 126                              union iwreq_data *data,
 127                              char *extra)
 128 {
 129         struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
 130         struct ieee80211_device *ieee = mac->ieee;
 131         unsigned long flags;
 132         s32 in_rate = data->bitrate.value;
 133         u8 rate;
 134         int is_ofdm = 0;
 135         int err = -EINVAL;
 136
 137         if (in_rate == -1) {
 138                 /* automatic detect */
 139                 if (ieee->modulation & IEEE80211_OFDM_MODULATION)
 140                         in_rate = 54000000;
 141                 else
 142                         in_rate = 11000000;
 143         }
 144
 145         switch (in_rate) {
 146         case 1000000:
 147                 rate = IEEE80211_CCK_RATE_1MB;
 148                 break;
 149         case 2000000:
 150                 rate = IEEE80211_CCK_RATE_2MB;
 151                 break;
 152         case 5500000:
 153                 rate = IEEE80211_CCK_RATE_5MB;
 154                 break;
 155         case 11000000:
 156                 rate = IEEE80211_CCK_RATE_11MB;
 157                 break;
 158         case 6000000:
 159                 rate = IEEE80211_OFDM_RATE_6MB;
 160                 is_ofdm = 1;
 161                 break;
 162         case 9000000:
 163                 rate = IEEE80211_OFDM_RATE_9MB;
 164                 is_ofdm = 1;
 165                 break;
 166         case 12000000:
 167                 rate = IEEE80211_OFDM_RATE_12MB;
 168                 is_ofdm = 1;
 169                 break;
 170         case 18000000:
 171                 rate = IEEE80211_OFDM_RATE_18MB;
 172                 is_ofdm = 1;
 173                 break;
 174         case 24000000:
 175                 rate = IEEE80211_OFDM_RATE_24MB;
 176                 is_ofdm = 1;
 177                 break;
 178         case 36000000:
 179                 rate = IEEE80211_OFDM_RATE_36MB;
 180                 is_ofdm = 1;
 181                 break;
 182         case 48000000:
 183                 rate = IEEE80211_OFDM_RATE_48MB;
 184                 is_ofdm = 1;
 185                 break;
 186         case 54000000:
 187                 rate = IEEE80211_OFDM_RATE_54MB;
 188                 is_ofdm = 1;
 189                 break;
 190         default:
 191                 goto out;
 192         }
 193
 194         spin_lock_irqsave(&mac->lock, flags);
 195
 196         /* Check if correct modulation for this PHY. */
 197         if (is_ofdm && !(ieee->modulation & IEEE80211_OFDM_MODULATION))
 198                 goto out_unlock;
 199
 200         mac->txrates.default_rate = rate;
 201         mac->txrates.default_fallback = lower_rate(mac, rate);
 202         err = 0;
 203
 204 out_unlock:
 205         spin_unlock_irqrestore(&mac->lock, flags);
 206 out:
 207         return err;
 208 }
 209 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_rate);
 210
 211 int
 212 ieee80211softmac_wx_get_rate(struct net_device *net_dev,
 213                              struct iw_request_info *info,
 214                              union iwreq_data *data,
 215                              char *extra)
 216 {
 217         struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
 218         unsigned long flags;
 219         int err = -EINVAL;
 220
 221         spin_lock_irqsave(&mac->lock, flags);
 222         switch (mac->txrates.default_rate) {
 223         case IEEE80211_CCK_RATE_1MB:
 224                 data->bitrate.value = 1000000;
 225                 break;
 226         case IEEE80211_CCK_RATE_2MB:
 227                 data->bitrate.value = 2000000;
 228                 break;
 229         case IEEE80211_CCK_RATE_5MB:
 230                 data->bitrate.value = 5500000;
 231                 break;
 232         case IEEE80211_CCK_RATE_11MB:
 233                 data->bitrate.value = 11000000;
 234                 break;
 235         case IEEE80211_OFDM_RATE_6MB:
 236                 data->bitrate.value = 6000000;
 237                 break;
 238         case IEEE80211_OFDM_RATE_9MB:
 239                 data->bitrate.value = 9000000;
 240                 break;
 241         case IEEE80211_OFDM_RATE_12MB:
 242                 data->bitrate.value = 12000000;
 243                 break;
 244         case IEEE80211_OFDM_RATE_18MB:
 245                 data->bitrate.value = 18000000;
 246                 break;
 247         case IEEE80211_OFDM_RATE_24MB:
 248                 data->bitrate.value = 24000000;
 249                 break;
 250         case IEEE80211_OFDM_RATE_36MB:
 251                 data->bitrate.value = 36000000;
 252                 break;
 253         case IEEE80211_OFDM_RATE_48MB:
 254                 data->bitrate.value = 48000000;
 255                 break;
 256         case IEEE80211_OFDM_RATE_54MB:
 257                 data->bitrate.value = 54000000;
 258                 break;
 259         default:
 260                 assert(0);
 261                 goto out_unlock;
 262         }
 263         err = 0;
 264 out_unlock:
 265         spin_unlock_irqrestore(&mac->lock, flags);
 266
 267         return err;
 268 }
 269 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_rate);
 270
 271 int
 272 ieee80211softmac_wx_get_wap(struct net_device *net_dev,
 273                             struct iw_request_info *info,
 274                             union iwreq_data *data,
 275                             char *extra)
 276 {
 277         struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
 278         int err = 0;
 279         unsigned long flags;
 280
 281         spin_lock_irqsave(&mac->lock, flags);
 282         if (mac->associnfo.bssvalid)
 283                 memcpy(data->ap_addr.sa_data, mac->associnfo.bssid, ETH_ALEN);
 284         else
 285                 memset(data->ap_addr.sa_data, 0xff, ETH_ALEN);
 286         data->ap_addr.sa_family = ARPHRD_ETHER;
 287         spin_unlock_irqrestore(&mac->lock, flags);
 288         return err;
 289 }
 290 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_wap);
 291
 292 int
 293 ieee80211softmac_wx_set_wap(struct net_device *net_dev,
 294                             struct iw_request_info *info,
 295                             union iwreq_data *data,
 296                             char *extra)
 297 {
 298         struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
 299         static const unsigned char any[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 300         static const unsigned char off[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
 301         unsigned long flags;
 302
 303         /* sanity check */
 304         if (data->ap_addr.sa_family != ARPHRD_ETHER) {
 305                 return -EINVAL;
 306         }
 307
 308         spin_lock_irqsave(&mac->lock, flags);
 309         if (!memcmp(any, data->ap_addr.sa_data, ETH_ALEN) ||
 310             !memcmp(off, data->ap_addr.sa_data, ETH_ALEN)) {
 311                 schedule_work(&mac->associnfo.work);
 312                 goto out;
 313         } else {
 314                 if (!memcmp(mac->associnfo.bssid, data->ap_addr.sa_data, ETH_ALEN)) {
 315                         if (mac->associnfo.associating || mac->associated) {
 316                         /* bssid unchanged and associated or associating - just return */
 317                                 goto out;
 318                         }
 319                 } else {
 320                         /* copy new value in data->ap_addr.sa_data to bssid */
 321                         memcpy(mac->associnfo.bssid, data->ap_addr.sa_data, ETH_ALEN);
 322                 }
 323                 /* queue associate if new bssid or (old one again and not associated) */
 324                 schedule_work(&mac->associnfo.work);
 325         }
 326
 327 out:
 328         spin_unlock_irqrestore(&mac->lock, flags);
 329         return 0;
 330 }
 331 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_wap);
 332
 333 int
 334 ieee80211softmac_wx_set_genie(struct net_device *dev,
 335                               struct iw_request_info *info,
 336                               union iwreq_data *wrqu,
 337                               char *extra)
 338 {
 339         struct ieee80211softmac_device *mac = ieee80211_priv(dev);
 340         unsigned long flags;
 341         int err = 0;
 342         char *buf;
 343         int i;
 344
 345         spin_lock_irqsave(&mac->lock, flags);
 346         /* bleh. shouldn't be locked for that kmalloc... */
 347
 348         if (wrqu->data.length) {
 349                 if ((wrqu->data.length < 2) || (extra[1]+2 != wrqu->data.length)) {
 350                         /* this is an IE, so the length must be
 351                          * correct. Is it possible though that
 352                          * more than one IE is passed in?
 353                          */
 354                         err = -EINVAL;
 355                         goto out;
 356                 }
 357                 if (mac->wpa.IEbuflen <= wrqu->data.length) {
 358                         buf = kmalloc(wrqu->data.length, GFP_ATOMIC);
 359                         if (!buf) {
 360                                 err = -ENOMEM;
 361                                 goto out;
 362                         }
 363                         kfree(mac->wpa.IE);
 364                         mac->wpa.IE = buf;
 365                         mac->wpa.IEbuflen = wrqu->data.length;
 366                 }
 367                 memcpy(mac->wpa.IE, extra, wrqu->data.length);
 368                 dprintk(KERN_INFO PFX "generic IE set to ");
 369                 for (i=0;i<wrqu->data.length;i++)
 370                         dprintk("%.2x", mac->wpa.IE[i]);
 371                 dprintk("\n");
 372                 mac->wpa.IElen = wrqu->data.length;
 373         } else {
 374                 kfree(mac->wpa.IE);
 375                 mac->wpa.IE = NULL;
 376                 mac->wpa.IElen = 0;
 377                 mac->wpa.IEbuflen = 0;
 378         }
 379
 380  out:
 381         spin_unlock_irqrestore(&mac->lock, flags);
 382         return err;
 383 }
 384 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_genie);
 385
 386 int
 387 ieee80211softmac_wx_get_genie(struct net_device *dev,
 388                               struct iw_request_info *info,
 389                               union iwreq_data *wrqu,
 390                               char *extra)
 391 {
 392         struct ieee80211softmac_device *mac = ieee80211_priv(dev);
 393         unsigned long flags;
 394         int err = 0;
 395         int space = wrqu->data.length;
 396
 397         spin_lock_irqsave(&mac->lock, flags);
 398
 399         wrqu->data.length = 0;
 400
 401         if (mac->wpa.IE && mac->wpa.IElen) {
 402                 wrqu->data.length = mac->wpa.IElen;
 403                 if (mac->wpa.IElen <= space)
 404                         memcpy(extra, mac->wpa.IE, mac->wpa.IElen);
 405                 else
 406                         err = -E2BIG;
 407         }
 408         spin_unlock_irqrestore(&mac->lock, flags);
 409         return err;
 410 }
 411 EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_genie);
 412