release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac_wx.c

   1 /* IEEE 802.11 SoftMAC layer
   2  * Copyright (c) 2005 Andrea Merello <andreamrl@tiscali.it>
   3  *
   4  * Mostly extracted from the rtl8180-sa2400 driver for the
   5  * in-kernel generic ieee802.11 stack.
   6  *
   7  * Some pieces of code might be stolen from ipw2100 driver
   8  * copyright of who own it's copyright ;-)
   9  *
  10  * PS wx handler mostly stolen from hostap, copyright who
  11  * own it's copyright ;-)
  12  *
  13  * released under the GPL
  14  */
  15
  16
  17 #include "ieee80211.h"
  18 #ifdef ENABLE_DOT11D
  19 #include "dot11d.h"
  20 #endif
  21
  22 const long ieee80211_wlan_frequencies[] = {
  23         2412, 2417, 2422, 2427,
  24         2432, 2437, 2442, 2447,
  25         2452, 2457, 2462, 2467,
  26         2472, 2484
  27 };
  28
  29
  30 int ieee80211_wx_set_freq(struct ieee80211_device *ieee, struct iw_request_info *a,
  31                              union iwreq_data *wrqu, char *b)
  32 {
  33         int ret;
  34         struct iw_freq *fwrq = & wrqu->freq;
  35
  36         down(&ieee->wx_sem);
  37
  38         if(ieee->iw_mode == IW_MODE_INFRA){
  39                 ret = -EOPNOTSUPP;
  40                 goto out;
  41         }
  42
  43         /* if setting by freq convert to channel */
  44         if (fwrq->e == 1) {
  45                 if ((fwrq->m >= (int) 2.412e8 &&
  46                      fwrq->m <= (int) 2.487e8)) {
  47                         int f = fwrq->m / 100000;
  48                         int c = 0;
  49
  50                         while ((c < 14) && (f != ieee80211_wlan_frequencies[c]))
  51                                 c++;
  52
  53                         /* hack to fall through */
  54                         fwrq->e = 0;
  55                         fwrq->m = c + 1;
  56                 }
  57         }
  58
  59         if (fwrq->e > 0 || fwrq->m > 14 || fwrq->m < 1 ){
  60                 ret = -EOPNOTSUPP;
  61                 goto out;
  62
  63         }else { /* Set the channel */
  64
  65 #ifdef ENABLE_DOT11D
  66                 if (!(GET_DOT11D_INFO(ieee)->channel_map)[fwrq->m]) {
  67                         ret = -EINVAL;
  68                         goto out;
  69                 }
  70 #endif
  71                 ieee->current_network.channel = fwrq->m;
  72                 ieee->set_chan(ieee->dev, ieee->current_network.channel);
  73
  74                 if(ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
  75                         if(ieee->state == IEEE80211_LINKED){
  76
  77                         ieee80211_stop_send_beacons(ieee);
  78                         ieee80211_start_send_beacons(ieee);
  79                         }
  80         }
  81
  82         ret = 0;
  83 out:
  84         up(&ieee->wx_sem);
  85         return ret;
  86 }
  87
  88
  89 int ieee80211_wx_get_freq(struct ieee80211_device *ieee,
  90                              struct iw_request_info *a,
  91                              union iwreq_data *wrqu, char *b)
  92 {
  93         struct iw_freq *fwrq = & wrqu->freq;
  94
  95         if (ieee->current_network.channel == 0)
  96                 return -1;
  97         //NM 0.7.0 will not accept channel any more.
  98         fwrq->m = ieee80211_wlan_frequencies[ieee->current_network.channel-1] * 100000;
  99         fwrq->e = 1;
 100 //      fwrq->m = ieee->current_network.channel;
 101 //      fwrq->e = 0;
 102
 103         return 0;
 104 }
 105
 106 int ieee80211_wx_get_wap(struct ieee80211_device *ieee,
 107                             struct iw_request_info *info,
 108                             union iwreq_data *wrqu, char *extra)
 109 {
 110         unsigned long flags;
 111
 112         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
 113
 114         if (ieee->iw_mode == IW_MODE_MONITOR)
 115                 return -1;
 116
 117         /* We want avoid to give to the user inconsistent infos*/
 118         spin_lock_irqsave(&ieee->lock, flags);
 119
 120         if (ieee->state != IEEE80211_LINKED &&
 121                 ieee->state != IEEE80211_LINKED_SCANNING &&
 122                 ieee->wap_set == 0)
 123
 124                 memset(wrqu->ap_addr.sa_data, 0, ETH_ALEN);
 125         else
 126                 memcpy(wrqu->ap_addr.sa_data,
 127                        ieee->current_network.bssid, ETH_ALEN);
 128
 129         spin_unlock_irqrestore(&ieee->lock, flags);
 130
 131         return 0;
 132 }
 133
 134
 135 int ieee80211_wx_set_wap(struct ieee80211_device *ieee,
 136                          struct iw_request_info *info,
 137                          union iwreq_data *awrq,
 138                          char *extra)
 139 {
 140
 141         int ret = 0;
 142         u8 zero[] = {0,0,0,0,0,0};
 143         unsigned long flags;
 144
 145         short ifup = ieee->proto_started;//dev->flags & IFF_UP;
 146         struct sockaddr *temp = (struct sockaddr *)awrq;
 147
 148         ieee->sync_scan_hurryup = 1;
 149
 150         down(&ieee->wx_sem);
 151         /* use ifconfig hw ether */
 152         if (ieee->iw_mode == IW_MODE_MASTER){
 153                 ret = -1;
 154                 goto out;
 155         }
 156
 157         if (temp->sa_family != ARPHRD_ETHER){
 158                 ret = -EINVAL;
 159                 goto out;
 160         }
 161
 162         if (ifup)
 163                 ieee80211_stop_protocol(ieee);
 164
 165         /* just to avoid to give inconsistent infos in the
 166          * get wx method. not really needed otherwise
 167          */
 168         spin_lock_irqsave(&ieee->lock, flags);
 169
 170         memcpy(ieee->current_network.bssid, temp->sa_data, ETH_ALEN);
 171         ieee->wap_set = memcmp(temp->sa_data, zero,ETH_ALEN)!=0;
 172
 173         spin_unlock_irqrestore(&ieee->lock, flags);
 174
 175         if (ifup)
 176                 ieee80211_start_protocol(ieee);
 177 out:
 178         up(&ieee->wx_sem);
 179         return ret;
 180 }
 181
 182  int ieee80211_wx_get_essid(struct ieee80211_device *ieee, struct iw_request_info *a,union iwreq_data *wrqu,char *b)
 183 {
 184         int len,ret = 0;
 185         unsigned long flags;
 186
 187         if (ieee->iw_mode == IW_MODE_MONITOR)
 188                 return -1;
 189
 190         /* We want avoid to give to the user inconsistent infos*/
 191         spin_lock_irqsave(&ieee->lock, flags);
 192
 193         if (ieee->current_network.ssid[0] == '\0' ||
 194                 ieee->current_network.ssid_len == 0){
 195                 ret = -1;
 196                 goto out;
 197         }
 198
 199         if (ieee->state != IEEE80211_LINKED &&
 200                 ieee->state != IEEE80211_LINKED_SCANNING &&
 201                 ieee->ssid_set == 0){
 202                 ret = -1;
 203                 goto out;
 204         }
 205         len = ieee->current_network.ssid_len;
 206         wrqu->essid.length = len;
 207         strncpy(b,ieee->current_network.ssid,len);
 208         wrqu->essid.flags = 1;
 209
 210 out:
 211         spin_unlock_irqrestore(&ieee->lock, flags);
 212
 213         return ret;
 214
 215 }
 216
 217 int ieee80211_wx_set_rate(struct ieee80211_device *ieee,
 218                              struct iw_request_info *info,
 219                              union iwreq_data *wrqu, char *extra)
 220 {
 221
 222         u32 target_rate = wrqu->bitrate.value;
 223
 224         ieee->rate = target_rate/100000;
 225         return 0;
 226 }
 227
 228
 229
 230 int ieee80211_wx_get_rate(struct ieee80211_device *ieee,
 231                              struct iw_request_info *info,
 232                              union iwreq_data *wrqu, char *extra)
 233 {
 234         u32 tmp_rate;
 235         tmp_rate = TxCountToDataRate(ieee, ieee->softmac_stats.CurrentShowTxate);
 236
 237         wrqu->bitrate.value = tmp_rate * 500000;
 238
 239         return 0;
 240 }
 241
 242
 243 int ieee80211_wx_set_rts(struct ieee80211_device *ieee,
 244                              struct iw_request_info *info,
 245                              union iwreq_data *wrqu, char *extra)
 246 {
 247         if (wrqu->rts.disabled || !wrqu->rts.fixed)
 248                 ieee->rts = DEFAULT_RTS_THRESHOLD;
 249         else
 250         {
 251                 if (wrqu->rts.value < MIN_RTS_THRESHOLD ||
 252                                 wrqu->rts.value > MAX_RTS_THRESHOLD)
 253                         return -EINVAL;
 254                 ieee->rts = wrqu->rts.value;
 255         }
 256         return 0;
 257 }
 258
 259 int ieee80211_wx_get_rts(struct ieee80211_device *ieee,
 260                              struct iw_request_info *info,
 261                              union iwreq_data *wrqu, char *extra)
 262 {
 263         wrqu->rts.value = ieee->rts;
 264         wrqu->rts.fixed = 0;    /* no auto select */
 265         wrqu->rts.disabled = (wrqu->rts.value == DEFAULT_RTS_THRESHOLD);
 266         return 0;
 267 }
 268 int ieee80211_wx_set_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
 269                              union iwreq_data *wrqu, char *b)
 270 {
 271
 272         ieee->sync_scan_hurryup = 1;
 273
 274         down(&ieee->wx_sem);
 275
 276         if (wrqu->mode == ieee->iw_mode)
 277                 goto out;
 278
 279         if (wrqu->mode == IW_MODE_MONITOR){
 280
 281                 ieee->dev->type = ARPHRD_IEEE80211;
 282         }else{
 283                 ieee->dev->type = ARPHRD_ETHER;
 284         }
 285
 286         if (!ieee->proto_started){
 287                 ieee->iw_mode = wrqu->mode;
 288         }else{
 289                 ieee80211_stop_protocol(ieee);
 290                 ieee->iw_mode = wrqu->mode;
 291                 ieee80211_start_protocol(ieee);
 292         }
 293
 294 out:
 295         up(&ieee->wx_sem);
 296         return 0;
 297 }
 298
 299 void ieee80211_wx_sync_scan_wq(struct work_struct *work)
 300 {
 301         struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, wx_sync_scan_wq);
 302         short chan;
 303         HT_EXTCHNL_OFFSET chan_offset=0;
 304         HT_CHANNEL_WIDTH bandwidth=0;
 305         int b40M = 0;
 306         static int count = 0;
 307         chan = ieee->current_network.channel;
 308         netif_carrier_off(ieee->dev);
 309
 310         if (ieee->data_hard_stop)
 311                 ieee->data_hard_stop(ieee->dev);
 312
 313         ieee80211_stop_send_beacons(ieee);
 314
 315         ieee->state = IEEE80211_LINKED_SCANNING;
 316         ieee->link_change(ieee->dev);
 317         ieee->InitialGainHandler(ieee->dev,IG_Backup);
 318         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT && ieee->pHTInfo->bCurBW40MHz) {
 319                 b40M = 1;
 320                 chan_offset = ieee->pHTInfo->CurSTAExtChnlOffset;
 321                 bandwidth = (HT_CHANNEL_WIDTH)ieee->pHTInfo->bCurBW40MHz;
 322                 printk("Scan in 40M, force to 20M first:%d, %d\n", chan_offset, bandwidth);
 323                 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
 324                 }
 325         ieee80211_start_scan_syncro(ieee);
 326         if (b40M) {
 327                 printk("Scan in 20M, back to 40M\n");
 328                 if (chan_offset == HT_EXTCHNL_OFFSET_UPPER)
 329                         ieee->set_chan(ieee->dev, chan + 2);
 330                 else if (chan_offset == HT_EXTCHNL_OFFSET_LOWER)
 331                         ieee->set_chan(ieee->dev, chan - 2);
 332                 else
 333                         ieee->set_chan(ieee->dev, chan);
 334                 ieee->SetBWModeHandler(ieee->dev, bandwidth, chan_offset);
 335         } else {
 336                 ieee->set_chan(ieee->dev, chan);
 337         }
 338
 339         ieee->InitialGainHandler(ieee->dev,IG_Restore);
 340         ieee->state = IEEE80211_LINKED;
 341         ieee->link_change(ieee->dev);
 342         // To prevent the immediately calling watch_dog after scan.
 343         if(ieee->LinkDetectInfo.NumRecvBcnInPeriod==0||ieee->LinkDetectInfo.NumRecvDataInPeriod==0 )
 344         {
 345                 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
 346                 ieee->LinkDetectInfo.NumRecvDataInPeriod= 1;
 347         }
 348         if (ieee->data_hard_resume)
 349                 ieee->data_hard_resume(ieee->dev);
 350
 351         if(ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
 352                 ieee80211_start_send_beacons(ieee);
 353
 354         netif_carrier_on(ieee->dev);
 355         count = 0;
 356         up(&ieee->wx_sem);
 357
 358 }
 359
 360 int ieee80211_wx_set_scan(struct ieee80211_device *ieee, struct iw_request_info *a,
 361                              union iwreq_data *wrqu, char *b)
 362 {
 363         int ret = 0;
 364
 365         down(&ieee->wx_sem);
 366
 367         if (ieee->iw_mode == IW_MODE_MONITOR || !(ieee->proto_started)){
 368                 ret = -1;
 369                 goto out;
 370         }
 371
 372         if ( ieee->state == IEEE80211_LINKED){
 373                 queue_work(ieee->wq, &ieee->wx_sync_scan_wq);
 374                 /* intentionally forget to up sem */
 375                 return 0;
 376         }
 377
 378 out:
 379         up(&ieee->wx_sem);
 380         return ret;
 381 }
 382
 383 int ieee80211_wx_set_essid(struct ieee80211_device *ieee,
 384                               struct iw_request_info *a,
 385                               union iwreq_data *wrqu, char *extra)
 386 {
 387
 388         int ret=0,len;
 389         short proto_started;
 390         unsigned long flags;
 391
 392         ieee->sync_scan_hurryup = 1;
 393         down(&ieee->wx_sem);
 394
 395         proto_started = ieee->proto_started;
 396
 397         if (wrqu->essid.length > IW_ESSID_MAX_SIZE){
 398                 ret= -E2BIG;
 399                 goto out;
 400         }
 401
 402         if (ieee->iw_mode == IW_MODE_MONITOR){
 403                 ret= -1;
 404                 goto out;
 405         }
 406
 407         if(proto_started)
 408                 ieee80211_stop_protocol(ieee);
 409
 410
 411         /* this is just to be sure that the GET wx callback
 412          * has consisten infos. not needed otherwise
 413          */
 414         spin_lock_irqsave(&ieee->lock, flags);
 415
 416         if (wrqu->essid.flags && wrqu->essid.length) {
 417                 //first flush current network.ssid
 418                 len = ((wrqu->essid.length-1) < IW_ESSID_MAX_SIZE) ? (wrqu->essid.length-1) : IW_ESSID_MAX_SIZE;
 419                 strncpy(ieee->current_network.ssid, extra, len+1);
 420                 ieee->current_network.ssid_len = len+1;
 421                 ieee->ssid_set = 1;
 422         }
 423         else{
 424                 ieee->ssid_set = 0;
 425                 ieee->current_network.ssid[0] = '\0';
 426                 ieee->current_network.ssid_len = 0;
 427         }
 428         spin_unlock_irqrestore(&ieee->lock, flags);
 429
 430         if (proto_started)
 431                 ieee80211_start_protocol(ieee);
 432 out:
 433         up(&ieee->wx_sem);
 434         return ret;
 435 }
 436
 437  int ieee80211_wx_get_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
 438                              union iwreq_data *wrqu, char *b)
 439 {
 440
 441         wrqu->mode = ieee->iw_mode;
 442         return 0;
 443 }
 444
 445  int ieee80211_wx_set_rawtx(struct ieee80211_device *ieee,
 446                                struct iw_request_info *info,
 447                                union iwreq_data *wrqu, char *extra)
 448 {
 449
 450         int *parms = (int *)extra;
 451         int enable = (parms[0] > 0);
 452         short prev = ieee->raw_tx;
 453
 454         down(&ieee->wx_sem);
 455
 456         if(enable)
 457                 ieee->raw_tx = 1;
 458         else
 459                 ieee->raw_tx = 0;
 460
 461         printk(KERN_INFO"raw TX is %s\n",
 462               ieee->raw_tx ? "enabled" : "disabled");
 463
 464         if(ieee->iw_mode == IW_MODE_MONITOR)
 465         {
 466                 if(prev == 0 && ieee->raw_tx){
 467                         if (ieee->data_hard_resume)
 468                                 ieee->data_hard_resume(ieee->dev);
 469
 470                         netif_carrier_on(ieee->dev);
 471                 }
 472
 473                 if(prev && ieee->raw_tx == 1)
 474                         netif_carrier_off(ieee->dev);
 475         }
 476
 477         up(&ieee->wx_sem);
 478
 479         return 0;
 480 }
 481
 482 int ieee80211_wx_get_name(struct ieee80211_device *ieee,
 483                              struct iw_request_info *info,
 484                              union iwreq_data *wrqu, char *extra)
 485 {
 486         strcpy(wrqu->name, "802.11");
 487         if(ieee->modulation & IEEE80211_CCK_MODULATION){
 488                 strcat(wrqu->name, "b");
 489                 if(ieee->modulation & IEEE80211_OFDM_MODULATION)
 490                         strcat(wrqu->name, "/g");
 491         }else if(ieee->modulation & IEEE80211_OFDM_MODULATION)
 492                 strcat(wrqu->name, "g");
 493         if (ieee->mode & (IEEE_N_24G | IEEE_N_5G))
 494                 strcat(wrqu->name, "/n");
 495
 496         if((ieee->state == IEEE80211_LINKED) ||
 497                 (ieee->state == IEEE80211_LINKED_SCANNING))
 498                 strcat(wrqu->name," linked");
 499         else if(ieee->state != IEEE80211_NOLINK)
 500                 strcat(wrqu->name," link..");
 501
 502
 503         return 0;
 504 }
 505
 506
 507 /* this is mostly stolen from hostap */
 508 int ieee80211_wx_set_power(struct ieee80211_device *ieee,
 509                                  struct iw_request_info *info,
 510                                  union iwreq_data *wrqu, char *extra)
 511 {
 512         int ret = 0;
 513         down(&ieee->wx_sem);
 514
 515         if (wrqu->power.disabled){
 516                 ieee->ps = IEEE80211_PS_DISABLED;
 517                 goto exit;
 518         }
 519         if (wrqu->power.flags & IW_POWER_TIMEOUT) {
 520                 //ieee->ps_period = wrqu->power.value / 1000;
 521                 ieee->ps_timeout = wrqu->power.value / 1000;
 522         }
 523
 524         if (wrqu->power.flags & IW_POWER_PERIOD) {
 525
 526                 //ieee->ps_timeout = wrqu->power.value / 1000;
 527                 ieee->ps_period = wrqu->power.value / 1000;
 528                 //wrq->value / 1024;
 529
 530         }
 531         switch (wrqu->power.flags & IW_POWER_MODE) {
 532         case IW_POWER_UNICAST_R:
 533                 ieee->ps = IEEE80211_PS_UNICAST;
 534                 break;
 535         case IW_POWER_MULTICAST_R:
 536                 ieee->ps = IEEE80211_PS_MBCAST;
 537                 break;
 538         case IW_POWER_ALL_R:
 539                 ieee->ps = IEEE80211_PS_UNICAST | IEEE80211_PS_MBCAST;
 540                 break;
 541
 542         case IW_POWER_ON:
 543         //      ieee->ps = IEEE80211_PS_DISABLED;
 544                 break;
 545
 546         default:
 547                 ret = -EINVAL;
 548                 goto exit;
 549
 550         }
 551 exit:
 552         up(&ieee->wx_sem);
 553         return ret;
 554
 555 }
 556
 557 /* this is stolen from hostap */
 558 int ieee80211_wx_get_power(struct ieee80211_device *ieee,
 559                                  struct iw_request_info *info,
 560                                  union iwreq_data *wrqu, char *extra)
 561 {
 562         int ret =0;
 563
 564         down(&ieee->wx_sem);
 565
 566         if(ieee->ps == IEEE80211_PS_DISABLED){
 567                 wrqu->power.disabled = 1;
 568                 goto exit;
 569         }
 570
 571         wrqu->power.disabled = 0;
 572
 573         if ((wrqu->power.flags & IW_POWER_TYPE) == IW_POWER_TIMEOUT) {
 574                 wrqu->power.flags = IW_POWER_TIMEOUT;
 575                 wrqu->power.value = ieee->ps_timeout * 1000;
 576         } else {
 577 //              ret = -EOPNOTSUPP;
 578 //              goto exit;
 579                 wrqu->power.flags = IW_POWER_PERIOD;
 580                 wrqu->power.value = ieee->ps_period * 1000;
 581 //ieee->current_network.dtim_period * ieee->current_network.beacon_interval * 1024;
 582         }
 583
 584        if ((ieee->ps & (IEEE80211_PS_MBCAST | IEEE80211_PS_UNICAST)) == (IEEE80211_PS_MBCAST | IEEE80211_PS_UNICAST))
 585                 wrqu->power.flags |= IW_POWER_ALL_R;
 586         else if (ieee->ps & IEEE80211_PS_MBCAST)
 587                 wrqu->power.flags |= IW_POWER_MULTICAST_R;
 588         else
 589                 wrqu->power.flags |= IW_POWER_UNICAST_R;
 590
 591 exit:
 592         up(&ieee->wx_sem);
 593         return ret;
 594
 595 }
 596 EXPORT_SYMBOL(ieee80211_wx_get_essid);
 597 EXPORT_SYMBOL(ieee80211_wx_set_essid);
 598 EXPORT_SYMBOL(ieee80211_wx_set_rate);
 599 EXPORT_SYMBOL(ieee80211_wx_get_rate);
 600 EXPORT_SYMBOL(ieee80211_wx_set_wap);
 601 EXPORT_SYMBOL(ieee80211_wx_get_wap);
 602 EXPORT_SYMBOL(ieee80211_wx_set_mode);
 603 EXPORT_SYMBOL(ieee80211_wx_get_mode);
 604 EXPORT_SYMBOL(ieee80211_wx_set_scan);
 605 EXPORT_SYMBOL(ieee80211_wx_get_freq);
 606 EXPORT_SYMBOL(ieee80211_wx_set_freq);
 607 EXPORT_SYMBOL(ieee80211_wx_set_rawtx);
 608 EXPORT_SYMBOL(ieee80211_wx_get_name);
 609 EXPORT_SYMBOL(ieee80211_wx_set_power);
 610 EXPORT_SYMBOL(ieee80211_wx_get_power);
 611 EXPORT_SYMBOL(ieee80211_wlan_frequencies);
 612 EXPORT_SYMBOL(ieee80211_wx_set_rts);
 613 EXPORT_SYMBOL(ieee80211_wx_get_rts);