drivers/staging/rtl8192e/rtllib_softmac_wx.c

   1 /* IEEE 802.11 SoftMAC layer
   2  * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com>
   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 <linux/etherdevice.h>
  18
  19 #include "rtllib.h"
  20 #include "dot11d.h"
  21 /* FIXME: add A freqs */
  22
  23 const long rtllib_wlan_frequencies[] = {
  24         2412, 2417, 2422, 2427,
  25         2432, 2437, 2442, 2447,
  26         2452, 2457, 2462, 2467,
  27         2472, 2484
  28 };
  29 EXPORT_SYMBOL(rtllib_wlan_frequencies);
  30
  31
  32 int rtllib_wx_set_freq(struct rtllib_device *ieee, struct iw_request_info *a,
  33                              union iwreq_data *wrqu, char *b)
  34 {
  35         int ret;
  36         struct iw_freq *fwrq = &wrqu->freq;
  37
  38         down(&ieee->wx_sem);
  39
  40         if (ieee->iw_mode == IW_MODE_INFRA) {
  41                 ret = 0;
  42                 goto out;
  43         }
  44
  45         /* if setting by freq convert to channel */
  46         if (fwrq->e == 1) {
  47                 if ((fwrq->m >= (int) 2.412e8 &&
  48                      fwrq->m <= (int) 2.487e8)) {
  49                         int f = fwrq->m / 100000;
  50                         int c = 0;
  51
  52                         while ((c < 14) && (f != rtllib_wlan_frequencies[c]))
  53                                 c++;
  54
  55                         /* hack to fall through */
  56                         fwrq->e = 0;
  57                         fwrq->m = c + 1;
  58                 }
  59         }
  60
  61         if (fwrq->e > 0 || fwrq->m > 14 || fwrq->m < 1) {
  62                 ret = -EOPNOTSUPP;
  63                 goto out;
  64
  65         } else { /* Set the channel */
  66
  67                 if (ieee->active_channel_map[fwrq->m] != 1) {
  68                         ret = -EINVAL;
  69                         goto out;
  70                 }
  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 ||
  75                     ieee->iw_mode == IW_MODE_MASTER)
  76                         if (ieee->state == RTLLIB_LINKED) {
  77                                 rtllib_stop_send_beacons(ieee);
  78                                 rtllib_start_send_beacons(ieee);
  79                         }
  80         }
  81
  82         ret = 0;
  83 out:
  84         up(&ieee->wx_sem);
  85         return ret;
  86 }
  87 EXPORT_SYMBOL(rtllib_wx_set_freq);
  88
  89
  90 int rtllib_wx_get_freq(struct rtllib_device *ieee,
  91                              struct iw_request_info *a,
  92                              union iwreq_data *wrqu, char *b)
  93 {
  94         struct iw_freq *fwrq = &wrqu->freq;
  95
  96         if (ieee->current_network.channel == 0)
  97                 return -1;
  98         fwrq->m = rtllib_wlan_frequencies[ieee->current_network.channel-1] *
  99                   100000;
 100         fwrq->e = 1;
 101         return 0;
 102 }
 103 EXPORT_SYMBOL(rtllib_wx_get_freq);
 104
 105 int rtllib_wx_get_wap(struct rtllib_device *ieee,
 106                             struct iw_request_info *info,
 107                             union iwreq_data *wrqu, char *extra)
 108 {
 109         unsigned long flags;
 110
 111         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
 112
 113         if (ieee->iw_mode == IW_MODE_MONITOR)
 114                 return -1;
 115
 116         /* We want avoid to give to the user inconsistent infos*/
 117         spin_lock_irqsave(&ieee->lock, flags);
 118
 119         if (ieee->state != RTLLIB_LINKED &&
 120                 ieee->state != RTLLIB_LINKED_SCANNING &&
 121                 ieee->wap_set == 0)
 122
 123                 memset(wrqu->ap_addr.sa_data, 0, ETH_ALEN);
 124         else
 125                 memcpy(wrqu->ap_addr.sa_data,
 126                        ieee->current_network.bssid, ETH_ALEN);
 127
 128         spin_unlock_irqrestore(&ieee->lock, flags);
 129
 130         return 0;
 131 }
 132 EXPORT_SYMBOL(rtllib_wx_get_wap);
 133
 134
 135 int rtllib_wx_set_wap(struct rtllib_device *ieee,
 136                          struct iw_request_info *info,
 137                          union iwreq_data *awrq,
 138                          char *extra)
 139 {
 140
 141         int ret = 0;
 142         unsigned long flags;
 143
 144         short ifup = ieee->proto_started;
 145         struct sockaddr *temp = (struct sockaddr *)awrq;
 146
 147         rtllib_stop_scan_syncro(ieee);
 148
 149         down(&ieee->wx_sem);
 150         /* use ifconfig hw ether */
 151         if (ieee->iw_mode == IW_MODE_MASTER) {
 152                 ret = -1;
 153                 goto out;
 154         }
 155
 156         if (temp->sa_family != ARPHRD_ETHER) {
 157                 ret = -EINVAL;
 158                 goto out;
 159         }
 160
 161         if (is_zero_ether_addr(temp->sa_data)) {
 162                 spin_lock_irqsave(&ieee->lock, flags);
 163                 memcpy(ieee->current_network.bssid, temp->sa_data, ETH_ALEN);
 164                 ieee->wap_set = 0;
 165                 spin_unlock_irqrestore(&ieee->lock, flags);
 166                 ret = -1;
 167                 goto out;
 168         }
 169
 170
 171         if (ifup)
 172                 rtllib_stop_protocol(ieee, true);
 173
 174         /* just to avoid to give inconsistent infos in the
 175          * get wx method. not really needed otherwise
 176          */
 177         spin_lock_irqsave(&ieee->lock, flags);
 178
 179         ieee->cannot_notify = false;
 180         memcpy(ieee->current_network.bssid, temp->sa_data, ETH_ALEN);
 181         ieee->wap_set = !is_zero_ether_addr(temp->sa_data);
 182
 183         spin_unlock_irqrestore(&ieee->lock, flags);
 184
 185         if (ifup)
 186                 rtllib_start_protocol(ieee);
 187 out:
 188         up(&ieee->wx_sem);
 189         return ret;
 190 }
 191 EXPORT_SYMBOL(rtllib_wx_set_wap);
 192
 193 int rtllib_wx_get_essid(struct rtllib_device *ieee, struct iw_request_info *a,
 194                          union iwreq_data *wrqu, char *b)
 195 {
 196         int len, ret = 0;
 197         unsigned long flags;
 198
 199         if (ieee->iw_mode == IW_MODE_MONITOR)
 200                 return -1;
 201
 202         /* We want avoid to give to the user inconsistent infos*/
 203         spin_lock_irqsave(&ieee->lock, flags);
 204
 205         if (ieee->current_network.ssid[0] == '\0' ||
 206                 ieee->current_network.ssid_len == 0) {
 207                 ret = -1;
 208                 goto out;
 209         }
 210
 211         if (ieee->state != RTLLIB_LINKED &&
 212                 ieee->state != RTLLIB_LINKED_SCANNING &&
 213                 ieee->ssid_set == 0) {
 214                 ret = -1;
 215                 goto out;
 216         }
 217         len = ieee->current_network.ssid_len;
 218         wrqu->essid.length = len;
 219         strncpy(b, ieee->current_network.ssid, len);
 220         wrqu->essid.flags = 1;
 221
 222 out:
 223         spin_unlock_irqrestore(&ieee->lock, flags);
 224
 225         return ret;
 226
 227 }
 228 EXPORT_SYMBOL(rtllib_wx_get_essid);
 229
 230 int rtllib_wx_set_rate(struct rtllib_device *ieee,
 231                              struct iw_request_info *info,
 232                              union iwreq_data *wrqu, char *extra)
 233 {
 234
 235         u32 target_rate = wrqu->bitrate.value;
 236
 237         ieee->rate = target_rate/100000;
 238         return 0;
 239 }
 240 EXPORT_SYMBOL(rtllib_wx_set_rate);
 241
 242 int rtllib_wx_get_rate(struct rtllib_device *ieee,
 243                              struct iw_request_info *info,
 244                              union iwreq_data *wrqu, char *extra)
 245 {
 246         u32 tmp_rate = 0;
 247         tmp_rate = TxCountToDataRate(ieee,
 248                                      ieee->softmac_stats.CurrentShowTxate);
 249         wrqu->bitrate.value = tmp_rate * 500000;
 250
 251         return 0;
 252 }
 253 EXPORT_SYMBOL(rtllib_wx_get_rate);
 254
 255
 256 int rtllib_wx_set_rts(struct rtllib_device *ieee,
 257                              struct iw_request_info *info,
 258                              union iwreq_data *wrqu, char *extra)
 259 {
 260         if (wrqu->rts.disabled || !wrqu->rts.fixed)
 261                 ieee->rts = DEFAULT_RTS_THRESHOLD;
 262         else {
 263                 if (wrqu->rts.value < MIN_RTS_THRESHOLD ||
 264                                 wrqu->rts.value > MAX_RTS_THRESHOLD)
 265                         return -EINVAL;
 266                 ieee->rts = wrqu->rts.value;
 267         }
 268         return 0;
 269 }
 270 EXPORT_SYMBOL(rtllib_wx_set_rts);
 271
 272 int rtllib_wx_get_rts(struct rtllib_device *ieee,
 273                              struct iw_request_info *info,
 274                              union iwreq_data *wrqu, char *extra)
 275 {
 276         wrqu->rts.value = ieee->rts;
 277         wrqu->rts.fixed = 0;    /* no auto select */
 278         wrqu->rts.disabled = (wrqu->rts.value == DEFAULT_RTS_THRESHOLD);
 279         return 0;
 280 }
 281 EXPORT_SYMBOL(rtllib_wx_get_rts);
 282
 283 int rtllib_wx_set_mode(struct rtllib_device *ieee, struct iw_request_info *a,
 284                              union iwreq_data *wrqu, char *b)
 285 {
 286         int set_mode_status = 0;
 287
 288         rtllib_stop_scan_syncro(ieee);
 289         down(&ieee->wx_sem);
 290         switch (wrqu->mode) {
 291         case IW_MODE_MONITOR:
 292         case IW_MODE_ADHOC:
 293         case IW_MODE_INFRA:
 294                 break;
 295         case IW_MODE_AUTO:
 296                 wrqu->mode = IW_MODE_INFRA;
 297                 break;
 298         default:
 299                 set_mode_status = -EINVAL;
 300                 goto out;
 301         }
 302
 303         if (wrqu->mode == ieee->iw_mode)
 304                 goto out;
 305
 306         if (wrqu->mode == IW_MODE_MONITOR) {
 307                 ieee->dev->type = ARPHRD_IEEE80211;
 308                 rtllib_EnableNetMonitorMode(ieee->dev, false);
 309         } else {
 310                 ieee->dev->type = ARPHRD_ETHER;
 311                 if (ieee->iw_mode == IW_MODE_MONITOR)
 312                         rtllib_DisableNetMonitorMode(ieee->dev, false);
 313         }
 314
 315         if (!ieee->proto_started) {
 316                 ieee->iw_mode = wrqu->mode;
 317         } else {
 318                 rtllib_stop_protocol(ieee, true);
 319                 ieee->iw_mode = wrqu->mode;
 320                 rtllib_start_protocol(ieee);
 321         }
 322
 323 out:
 324         up(&ieee->wx_sem);
 325         return set_mode_status;
 326 }
 327 EXPORT_SYMBOL(rtllib_wx_set_mode);
 328
 329 void rtllib_wx_sync_scan_wq(void *data)
 330 {
 331         struct rtllib_device *ieee = container_of_work_rsl(data,
 332                                      struct rtllib_device, wx_sync_scan_wq);
 333         short chan;
 334         enum ht_extchnl_offset chan_offset = 0;
 335         enum ht_channel_width bandwidth = 0;
 336         int b40M = 0;
 337         static int count;
 338
 339         if (!(ieee->softmac_features & IEEE_SOFTMAC_SCAN)) {
 340                 rtllib_start_scan_syncro(ieee, 0);
 341                 goto out;
 342         }
 343
 344         chan = ieee->current_network.channel;
 345
 346         if (ieee->LeisurePSLeave)
 347                 ieee->LeisurePSLeave(ieee->dev);
 348         /* notify AP to be in PS mode */
 349         rtllib_sta_ps_send_null_frame(ieee, 1);
 350         rtllib_sta_ps_send_null_frame(ieee, 1);
 351
 352         rtllib_stop_all_queues(ieee);
 353
 354         if (ieee->data_hard_stop)
 355                 ieee->data_hard_stop(ieee->dev);
 356         rtllib_stop_send_beacons(ieee);
 357         ieee->state = RTLLIB_LINKED_SCANNING;
 358         ieee->link_change(ieee->dev);
 359         /* wait for ps packet to be kicked out successfully */
 360         msleep(50);
 361
 362         if (ieee->ScanOperationBackupHandler)
 363                 ieee->ScanOperationBackupHandler(ieee->dev, SCAN_OPT_BACKUP);
 364
 365         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT &&
 366             ieee->pHTInfo->bCurBW40MHz) {
 367                 b40M = 1;
 368                 chan_offset = ieee->pHTInfo->CurSTAExtChnlOffset;
 369                 bandwidth = (enum ht_channel_width)ieee->pHTInfo->bCurBW40MHz;
 370                 RT_TRACE(COMP_DBG, "Scan in 40M, force to 20M first:%d, %d\n",
 371                          chan_offset, bandwidth);
 372                 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20,
 373                                        HT_EXTCHNL_OFFSET_NO_EXT);
 374         }
 375
 376         rtllib_start_scan_syncro(ieee, 0);
 377
 378         if (b40M) {
 379                 RT_TRACE(COMP_DBG, "Scan in 20M, back to 40M\n");
 380                 if (chan_offset == HT_EXTCHNL_OFFSET_UPPER)
 381                         ieee->set_chan(ieee->dev, chan + 2);
 382                 else if (chan_offset == HT_EXTCHNL_OFFSET_LOWER)
 383                         ieee->set_chan(ieee->dev, chan - 2);
 384                 else
 385                         ieee->set_chan(ieee->dev, chan);
 386                 ieee->SetBWModeHandler(ieee->dev, bandwidth, chan_offset);
 387         } else {
 388                 ieee->set_chan(ieee->dev, chan);
 389         }
 390
 391         if (ieee->ScanOperationBackupHandler)
 392                 ieee->ScanOperationBackupHandler(ieee->dev, SCAN_OPT_RESTORE);
 393
 394         ieee->state = RTLLIB_LINKED;
 395         ieee->link_change(ieee->dev);
 396
 397         /* Notify AP that I wake up again */
 398         rtllib_sta_ps_send_null_frame(ieee, 0);
 399
 400         if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
 401             ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
 402                 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
 403                 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
 404         }
 405
 406         if (ieee->data_hard_resume)
 407                 ieee->data_hard_resume(ieee->dev);
 408
 409         if (ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
 410                 rtllib_start_send_beacons(ieee);
 411
 412         rtllib_wake_all_queues(ieee);
 413
 414         count = 0;
 415 out:
 416         up(&ieee->wx_sem);
 417
 418 }
 419
 420 int rtllib_wx_set_scan(struct rtllib_device *ieee, struct iw_request_info *a,
 421                              union iwreq_data *wrqu, char *b)
 422 {
 423         int ret = 0;
 424
 425         down(&ieee->wx_sem);
 426
 427         if (ieee->iw_mode == IW_MODE_MONITOR || !(ieee->proto_started)) {
 428                 ret = -1;
 429                 goto out;
 430         }
 431
 432         if (ieee->state == RTLLIB_LINKED) {
 433                 queue_work_rsl(ieee->wq, &ieee->wx_sync_scan_wq);
 434                 /* intentionally forget to up sem */
 435                 return 0;
 436         }
 437
 438 out:
 439         up(&ieee->wx_sem);
 440         return ret;
 441 }
 442 EXPORT_SYMBOL(rtllib_wx_set_scan);
 443
 444 int rtllib_wx_set_essid(struct rtllib_device *ieee,
 445                         struct iw_request_info *a,
 446                         union iwreq_data *wrqu, char *extra)
 447 {
 448
 449         int ret = 0, len, i;
 450         short proto_started;
 451         unsigned long flags;
 452
 453         rtllib_stop_scan_syncro(ieee);
 454         down(&ieee->wx_sem);
 455
 456         proto_started = ieee->proto_started;
 457
 458         len = (wrqu->essid.length < IW_ESSID_MAX_SIZE) ? wrqu->essid.length :
 459                IW_ESSID_MAX_SIZE;
 460
 461         if (len > IW_ESSID_MAX_SIZE) {
 462                 ret = -E2BIG;
 463                 goto out;
 464         }
 465
 466         if (ieee->iw_mode == IW_MODE_MONITOR) {
 467                 ret = -1;
 468                 goto out;
 469         }
 470
 471         for (i = 0; i < len; i++) {
 472                 if (extra[i] < 0) {
 473                         ret = -1;
 474                         goto out;
 475                 }
 476         }
 477
 478         if (proto_started)
 479                 rtllib_stop_protocol(ieee, true);
 480
 481
 482         /* this is just to be sure that the GET wx callback
 483          * has consistent infos. not needed otherwise
 484          */
 485         spin_lock_irqsave(&ieee->lock, flags);
 486
 487         if (wrqu->essid.flags && wrqu->essid.length) {
 488                 strncpy(ieee->current_network.ssid, extra, len);
 489                 ieee->current_network.ssid_len = len;
 490                 ieee->cannot_notify = false;
 491                 ieee->ssid_set = 1;
 492         } else {
 493                 ieee->ssid_set = 0;
 494                 ieee->current_network.ssid[0] = '\0';
 495                 ieee->current_network.ssid_len = 0;
 496         }
 497         spin_unlock_irqrestore(&ieee->lock, flags);
 498
 499         if (proto_started)
 500                 rtllib_start_protocol(ieee);
 501 out:
 502         up(&ieee->wx_sem);
 503         return ret;
 504 }
 505 EXPORT_SYMBOL(rtllib_wx_set_essid);
 506
 507 int rtllib_wx_get_mode(struct rtllib_device *ieee, struct iw_request_info *a,
 508                        union iwreq_data *wrqu, char *b)
 509 {
 510         wrqu->mode = ieee->iw_mode;
 511         return 0;
 512 }
 513 EXPORT_SYMBOL(rtllib_wx_get_mode);
 514
 515 int rtllib_wx_set_rawtx(struct rtllib_device *ieee,
 516                         struct iw_request_info *info,
 517                         union iwreq_data *wrqu, char *extra)
 518 {
 519
 520         int *parms = (int *)extra;
 521         int enable = (parms[0] > 0);
 522         short prev = ieee->raw_tx;
 523
 524         down(&ieee->wx_sem);
 525
 526         if (enable)
 527                 ieee->raw_tx = 1;
 528         else
 529                 ieee->raw_tx = 0;
 530
 531         printk(KERN_INFO"raw TX is %s\n",
 532               ieee->raw_tx ? "enabled" : "disabled");
 533
 534         if (ieee->iw_mode == IW_MODE_MONITOR) {
 535                 if (prev == 0 && ieee->raw_tx) {
 536                         if (ieee->data_hard_resume)
 537                                 ieee->data_hard_resume(ieee->dev);
 538
 539                         netif_carrier_on(ieee->dev);
 540                 }
 541
 542                 if (prev && ieee->raw_tx == 1)
 543                         netif_carrier_off(ieee->dev);
 544         }
 545
 546         up(&ieee->wx_sem);
 547
 548         return 0;
 549 }
 550 EXPORT_SYMBOL(rtllib_wx_set_rawtx);
 551
 552 int rtllib_wx_get_name(struct rtllib_device *ieee,
 553                              struct iw_request_info *info,
 554                              union iwreq_data *wrqu, char *extra)
 555 {
 556         strcpy(wrqu->name, "802.11");
 557
 558         if (ieee->modulation & RTLLIB_CCK_MODULATION)
 559                 strcat(wrqu->name, "b");
 560         if (ieee->modulation & RTLLIB_OFDM_MODULATION)
 561                 strcat(wrqu->name, "g");
 562         if (ieee->mode & (IEEE_N_24G | IEEE_N_5G))
 563                 strcat(wrqu->name, "n");
 564         return 0;
 565 }
 566 EXPORT_SYMBOL(rtllib_wx_get_name);
 567
 568
 569 /* this is mostly stolen from hostap */
 570 int rtllib_wx_set_power(struct rtllib_device *ieee,
 571                                  struct iw_request_info *info,
 572                                  union iwreq_data *wrqu, char *extra)
 573 {
 574         int ret = 0;
 575
 576         if ((!ieee->sta_wake_up) ||
 577             (!ieee->enter_sleep_state) ||
 578             (!ieee->ps_is_queue_empty)) {
 579                 RTLLIB_DEBUG(RTLLIB_DL_ERR, "%s(): PS mode is tried to be use "
 580                              "but driver missed a callback\n\n", __func__);
 581                 return -1;
 582         }
 583
 584         down(&ieee->wx_sem);
 585
 586         if (wrqu->power.disabled) {
 587                 RT_TRACE(COMP_DBG, "===>%s(): power disable\n", __func__);
 588                 ieee->ps = RTLLIB_PS_DISABLED;
 589                 goto exit;
 590         }
 591         if (wrqu->power.flags & IW_POWER_TIMEOUT) {
 592                 ieee->ps_timeout = wrqu->power.value / 1000;
 593                 RT_TRACE(COMP_DBG, "===>%s():ps_timeout is %d\n", __func__,
 594                          ieee->ps_timeout);
 595         }
 596
 597         if (wrqu->power.flags & IW_POWER_PERIOD)
 598                 ieee->ps_period = wrqu->power.value / 1000;
 599
 600         switch (wrqu->power.flags & IW_POWER_MODE) {
 601         case IW_POWER_UNICAST_R:
 602                 ieee->ps = RTLLIB_PS_UNICAST;
 603                 break;
 604         case IW_POWER_MULTICAST_R:
 605                 ieee->ps = RTLLIB_PS_MBCAST;
 606                 break;
 607         case IW_POWER_ALL_R:
 608                 ieee->ps = RTLLIB_PS_UNICAST | RTLLIB_PS_MBCAST;
 609                 break;
 610
 611         case IW_POWER_ON:
 612                 break;
 613
 614         default:
 615                 ret = -EINVAL;
 616                 goto exit;
 617
 618         }
 619 exit:
 620         up(&ieee->wx_sem);
 621         return ret;
 622
 623 }
 624 EXPORT_SYMBOL(rtllib_wx_set_power);
 625
 626 /* this is stolen from hostap */
 627 int rtllib_wx_get_power(struct rtllib_device *ieee,
 628                                  struct iw_request_info *info,
 629                                  union iwreq_data *wrqu, char *extra)
 630 {
 631         down(&ieee->wx_sem);
 632
 633         if (ieee->ps == RTLLIB_PS_DISABLED) {
 634                 wrqu->power.disabled = 1;
 635                 goto exit;
 636         }
 637
 638         wrqu->power.disabled = 0;
 639
 640         if ((wrqu->power.flags & IW_POWER_TYPE) == IW_POWER_TIMEOUT) {
 641                 wrqu->power.flags = IW_POWER_TIMEOUT;
 642                 wrqu->power.value = ieee->ps_timeout * 1000;
 643         } else {
 644                 wrqu->power.flags = IW_POWER_PERIOD;
 645                 wrqu->power.value = ieee->ps_period * 1000;
 646         }
 647
 648         if ((ieee->ps & (RTLLIB_PS_MBCAST | RTLLIB_PS_UNICAST)) ==
 649             (RTLLIB_PS_MBCAST | RTLLIB_PS_UNICAST))
 650                 wrqu->power.flags |= IW_POWER_ALL_R;
 651         else if (ieee->ps & RTLLIB_PS_MBCAST)
 652                 wrqu->power.flags |= IW_POWER_MULTICAST_R;
 653         else
 654                 wrqu->power.flags |= IW_POWER_UNICAST_R;
 655
 656 exit:
 657         up(&ieee->wx_sem);
 658         return 0;
 659
 660 }
 661 EXPORT_SYMBOL(rtllib_wx_get_power);