drivers/staging/rtl8192e/rtllib_softmac.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  * Few lines might be stolen from other part of the rtllib
   8  * stack. Copyright who own it's copyright
   9  *
  10  * WPA code stolen from the ipw2200 driver.
  11  * Copyright who own it's copyright.
  12  *
  13  * released under the GPL
  14  */
  15
  16
  17 #include "rtllib.h"
  18
  19 #include <linux/random.h>
  20 #include <linux/delay.h>
  21 #include <linux/uaccess.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/ieee80211.h>
  24 #include "dot11d.h"
  25
  26 short rtllib_is_54g(struct rtllib_network *net)
  27 {
  28         return (net->rates_ex_len > 0) || (net->rates_len > 4);
  29 }
  30
  31 /* returns the total length needed for placing the RATE MFIE
  32  * tag and the EXTENDED RATE MFIE tag if needed.
  33  * It encludes two bytes per tag for the tag itself and its len
  34  */
  35 static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
  36 {
  37         unsigned int rate_len = 0;
  38
  39         if (ieee->modulation & RTLLIB_CCK_MODULATION)
  40                 rate_len = RTLLIB_CCK_RATE_LEN + 2;
  41
  42         if (ieee->modulation & RTLLIB_OFDM_MODULATION)
  43
  44                 rate_len += RTLLIB_OFDM_RATE_LEN + 2;
  45
  46         return rate_len;
  47 }
  48
  49 /* place the MFIE rate, tag to the memory (double) pointed.
  50  * Then it updates the pointer so that
  51  * it points after the new MFIE tag added.
  52  */
  53 static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
  54 {
  55         u8 *tag = *tag_p;
  56
  57         if (ieee->modulation & RTLLIB_CCK_MODULATION) {
  58                 *tag++ = MFIE_TYPE_RATES;
  59                 *tag++ = 4;
  60                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
  61                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
  62                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
  63                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
  64         }
  65
  66         /* We may add an option for custom rates that specific HW
  67          * might support
  68          */
  69         *tag_p = tag;
  70 }
  71
  72 static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p)
  73 {
  74         u8 *tag = *tag_p;
  75
  76         if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
  77                 *tag++ = MFIE_TYPE_RATES_EX;
  78                 *tag++ = 8;
  79                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB;
  80                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB;
  81                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB;
  82                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB;
  83                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB;
  84                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB;
  85                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB;
  86                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB;
  87         }
  88         /* We may add an option for custom rates that specific HW might
  89          * support
  90          */
  91         *tag_p = tag;
  92 }
  93
  94 static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
  95 {
  96         u8 *tag = *tag_p;
  97
  98         *tag++ = MFIE_TYPE_GENERIC;
  99         *tag++ = 7;
 100         *tag++ = 0x00;
 101         *tag++ = 0x50;
 102         *tag++ = 0xf2;
 103         *tag++ = 0x02;
 104         *tag++ = 0x00;
 105         *tag++ = 0x01;
 106         *tag++ = MAX_SP_Len;
 107         *tag_p = tag;
 108 }
 109
 110 void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
 111 {
 112         u8 *tag = *tag_p;
 113
 114         *tag++ = MFIE_TYPE_GENERIC;
 115         *tag++ = 7;
 116         *tag++ = 0x00;
 117         *tag++ = 0xe0;
 118         *tag++ = 0x4c;
 119         *tag++ = 0x01;
 120         *tag++ = 0x02;
 121         *tag++ = 0x11;
 122         *tag++ = 0x00;
 123
 124         *tag_p = tag;
 125         netdev_alert(ieee->dev, "This is enable turbo mode IE process\n");
 126 }
 127
 128 static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
 129 {
 130         int nh;
 131
 132         nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
 133
 134 /* if the queue is full but we have newer frames then
 135  * just overwrites the oldest.
 136  *
 137  * if (nh == ieee->mgmt_queue_tail)
 138  *              return -1;
 139  */
 140         ieee->mgmt_queue_head = nh;
 141         ieee->mgmt_queue_ring[nh] = skb;
 142
 143 }
 144
 145 static void init_mgmt_queue(struct rtllib_device *ieee)
 146 {
 147         ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
 148 }
 149
 150
 151 u8
 152 MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
 153 {
 154         u16     i;
 155         u8      QueryRate = 0;
 156         u8      BasicRate;
 157
 158
 159         for (i = 0; i < ieee->current_network.rates_len; i++) {
 160                 BasicRate = ieee->current_network.rates[i]&0x7F;
 161                 if (!rtllib_is_cck_rate(BasicRate)) {
 162                         if (QueryRate == 0) {
 163                                 QueryRate = BasicRate;
 164                         } else {
 165                                 if (BasicRate < QueryRate)
 166                                         QueryRate = BasicRate;
 167                         }
 168                 }
 169         }
 170
 171         if (QueryRate == 0) {
 172                 QueryRate = 12;
 173                 netdev_info(ieee->dev, "No BasicRate found!!\n");
 174         }
 175         return QueryRate;
 176 }
 177
 178 static u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
 179 {
 180         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 181         u8 rate;
 182
 183         if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
 184                 rate = 0x0c;
 185         else
 186                 rate = ieee->basic_rate & 0x7f;
 187
 188         if (rate == 0) {
 189                 if (ieee->mode == IEEE_A ||
 190                    ieee->mode == IEEE_N_5G ||
 191                    (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
 192                         rate = 0x0c;
 193                 else
 194                         rate = 0x02;
 195         }
 196
 197         return rate;
 198 }
 199
 200 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
 201 {
 202         unsigned long flags;
 203         short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
 204         struct rtllib_hdr_3addr  *header =
 205                 (struct rtllib_hdr_3addr  *) skb->data;
 206
 207         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
 208
 209         spin_lock_irqsave(&ieee->lock, flags);
 210
 211         /* called with 2nd param 0, no mgmt lock required */
 212         rtllib_sta_wakeup(ieee, 0);
 213
 214         if (le16_to_cpu(header->frame_ctl) == RTLLIB_STYPE_BEACON)
 215                 tcb_desc->queue_index = BEACON_QUEUE;
 216         else
 217                 tcb_desc->queue_index = MGNT_QUEUE;
 218
 219         if (ieee->disable_mgnt_queue)
 220                 tcb_desc->queue_index = HIGH_QUEUE;
 221
 222         tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
 223         tcb_desc->RATRIndex = 7;
 224         tcb_desc->bTxDisableRateFallBack = 1;
 225         tcb_desc->bTxUseDriverAssingedRate = 1;
 226         if (single) {
 227                 if (ieee->queue_stop) {
 228                         enqueue_mgmt(ieee, skb);
 229                 } else {
 230                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
 231
 232                         if (ieee->seq_ctrl[0] == 0xFFF)
 233                                 ieee->seq_ctrl[0] = 0;
 234                         else
 235                                 ieee->seq_ctrl[0]++;
 236
 237                         /* avoid watchdog triggers */
 238                         ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
 239                                                            ieee->basic_rate);
 240                 }
 241
 242                 spin_unlock_irqrestore(&ieee->lock, flags);
 243         } else {
 244                 spin_unlock_irqrestore(&ieee->lock, flags);
 245                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
 246
 247                 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 248
 249                 if (ieee->seq_ctrl[0] == 0xFFF)
 250                         ieee->seq_ctrl[0] = 0;
 251                 else
 252                         ieee->seq_ctrl[0]++;
 253
 254                 /* check whether the managed packet queued greater than 5 */
 255                 if (!ieee->check_nic_enough_desc(ieee->dev,
 256                                                  tcb_desc->queue_index) ||
 257                     skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) ||
 258                     ieee->queue_stop) {
 259                         /* insert the skb packet to the management queue
 260                          *
 261                          * as for the completion function, it does not need
 262                          * to check it any more.
 263                          */
 264                         netdev_info(ieee->dev,
 265                                "%s():insert to waitqueue, queue_index:%d!\n",
 266                                __func__, tcb_desc->queue_index);
 267                         skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
 268                                        skb);
 269                 } else {
 270                         ieee->softmac_hard_start_xmit(skb, ieee->dev);
 271                 }
 272                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
 273         }
 274 }
 275
 276 inline void softmac_ps_mgmt_xmit(struct sk_buff *skb,
 277                 struct rtllib_device *ieee)
 278 {
 279         short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
 280         struct rtllib_hdr_3addr  *header =
 281                 (struct rtllib_hdr_3addr  *) skb->data;
 282         u16 fc, type, stype;
 283         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
 284
 285         fc = le16_to_cpu(header->frame_ctl);
 286         type = WLAN_FC_GET_TYPE(fc);
 287         stype = WLAN_FC_GET_STYPE(fc);
 288
 289
 290         if (stype != RTLLIB_STYPE_PSPOLL)
 291                 tcb_desc->queue_index = MGNT_QUEUE;
 292         else
 293                 tcb_desc->queue_index = HIGH_QUEUE;
 294
 295         if (ieee->disable_mgnt_queue)
 296                 tcb_desc->queue_index = HIGH_QUEUE;
 297
 298
 299         tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
 300         tcb_desc->RATRIndex = 7;
 301         tcb_desc->bTxDisableRateFallBack = 1;
 302         tcb_desc->bTxUseDriverAssingedRate = 1;
 303         if (single) {
 304                 if (type != RTLLIB_FTYPE_CTL) {
 305                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 306
 307                         if (ieee->seq_ctrl[0] == 0xFFF)
 308                                 ieee->seq_ctrl[0] = 0;
 309                         else
 310                                 ieee->seq_ctrl[0]++;
 311
 312                 }
 313                 /* avoid watchdog triggers */
 314                 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
 315                                                    ieee->basic_rate);
 316
 317         } else {
 318                 if (type != RTLLIB_FTYPE_CTL) {
 319                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 320
 321                         if (ieee->seq_ctrl[0] == 0xFFF)
 322                                 ieee->seq_ctrl[0] = 0;
 323                         else
 324                                 ieee->seq_ctrl[0]++;
 325                 }
 326                 ieee->softmac_hard_start_xmit(skb, ieee->dev);
 327
 328         }
 329 }
 330
 331 static inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
 332 {
 333         unsigned int len, rate_len;
 334         u8 *tag;
 335         struct sk_buff *skb;
 336         struct rtllib_probe_request *req;
 337
 338         len = ieee->current_network.ssid_len;
 339
 340         rate_len = rtllib_MFIE_rate_len(ieee);
 341
 342         skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
 343                             2 + len + rate_len + ieee->tx_headroom);
 344
 345         if (!skb)
 346                 return NULL;
 347
 348         skb_reserve(skb, ieee->tx_headroom);
 349
 350         req = (struct rtllib_probe_request *) skb_put(skb,
 351               sizeof(struct rtllib_probe_request));
 352         req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
 353         req->header.duration_id = 0;
 354
 355         memset(req->header.addr1, 0xff, ETH_ALEN);
 356         ether_addr_copy(req->header.addr2, ieee->dev->dev_addr);
 357         memset(req->header.addr3, 0xff, ETH_ALEN);
 358
 359         tag = (u8 *) skb_put(skb, len + 2 + rate_len);
 360
 361         *tag++ = MFIE_TYPE_SSID;
 362         *tag++ = len;
 363         memcpy(tag, ieee->current_network.ssid, len);
 364         tag += len;
 365
 366         rtllib_MFIE_Brate(ieee, &tag);
 367         rtllib_MFIE_Grate(ieee, &tag);
 368
 369         return skb;
 370 }
 371
 372 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
 373
 374 static void rtllib_send_beacon(struct rtllib_device *ieee)
 375 {
 376         struct sk_buff *skb;
 377
 378         if (!ieee->ieee_up)
 379                 return;
 380         skb = rtllib_get_beacon_(ieee);
 381
 382         if (skb) {
 383                 softmac_mgmt_xmit(skb, ieee);
 384                 ieee->softmac_stats.tx_beacons++;
 385         }
 386
 387         if (ieee->beacon_txing && ieee->ieee_up)
 388                 mod_timer(&ieee->beacon_timer, jiffies +
 389                           (msecs_to_jiffies(ieee->current_network.beacon_interval - 5)));
 390 }
 391
 392
 393 static void rtllib_send_beacon_cb(unsigned long _ieee)
 394 {
 395         struct rtllib_device *ieee =
 396                 (struct rtllib_device *) _ieee;
 397         unsigned long flags;
 398
 399         spin_lock_irqsave(&ieee->beacon_lock, flags);
 400         rtllib_send_beacon(ieee);
 401         spin_unlock_irqrestore(&ieee->beacon_lock, flags);
 402 }
 403
 404 /* Enables network monitor mode, all rx packets will be received. */
 405 void rtllib_EnableNetMonitorMode(struct net_device *dev,
 406                 bool bInitState)
 407 {
 408         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 409
 410         netdev_info(dev, "========>Enter Monitor Mode\n");
 411
 412         ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
 413 }
 414
 415
 416 /* Disables network monitor mode. Only packets destinated to
 417  * us will be received.
 418  */
 419 void rtllib_DisableNetMonitorMode(struct net_device *dev,
 420                 bool bInitState)
 421 {
 422         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 423
 424         netdev_info(dev, "========>Exit Monitor Mode\n");
 425
 426         ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
 427 }
 428
 429
 430 /* Enables the specialized promiscuous mode required by Intel.
 431  * In this mode, Intel intends to hear traffics from/to other STAs in the
 432  * same BSS. Therefore we don't have to disable checking BSSID and we only need
 433  * to allow all dest. BUT: if we enable checking BSSID then we can't recv
 434  * packets from other STA.
 435  */
 436 void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
 437                 bool bInitState)
 438 {
 439         bool bFilterOutNonAssociatedBSSID = false;
 440
 441         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 442
 443         netdev_info(dev, "========>Enter Intel Promiscuous Mode\n");
 444
 445         ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
 446         ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
 447                              (u8 *)&bFilterOutNonAssociatedBSSID);
 448
 449         ieee->bNetPromiscuousMode = true;
 450 }
 451 EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode);
 452
 453
 454 /* Disables the specialized promiscuous mode required by Intel.
 455  * See MgntEnableIntelPromiscuousMode for detail.
 456  */
 457 void rtllib_DisableIntelPromiscuousMode(struct net_device *dev,
 458                 bool bInitState)
 459 {
 460         bool bFilterOutNonAssociatedBSSID = true;
 461
 462         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 463
 464         netdev_info(dev, "========>Exit Intel Promiscuous Mode\n");
 465
 466         ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
 467         ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
 468                              (u8 *)&bFilterOutNonAssociatedBSSID);
 469
 470         ieee->bNetPromiscuousMode = false;
 471 }
 472 EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode);
 473
 474 static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh)
 475 {
 476         struct sk_buff *skb;
 477
 478         skb = rtllib_probe_req(ieee);
 479         if (skb) {
 480                 softmac_mgmt_xmit(skb, ieee);
 481                 ieee->softmac_stats.tx_probe_rq++;
 482         }
 483 }
 484
 485
 486 void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh)
 487 {
 488         if (ieee->active_scan && (ieee->softmac_features &
 489             IEEE_SOFTMAC_PROBERQ)) {
 490                 rtllib_send_probe(ieee, 0);
 491                 rtllib_send_probe(ieee, 0);
 492         }
 493 }
 494
 495 void rtllib_update_active_chan_map(struct rtllib_device *ieee)
 496 {
 497         memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map,
 498                MAX_CHANNEL_NUMBER+1);
 499 }
 500
 501 /* this performs syncro scan blocking the caller until all channels
 502  * in the allowed channel map has been checked.
 503  */
 504 void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
 505 {
 506         union iwreq_data wrqu;
 507         short ch = 0;
 508
 509         rtllib_update_active_chan_map(ieee);
 510
 511         ieee->be_scan_inprogress = true;
 512
 513         down(&ieee->scan_sem);
 514
 515         while (1) {
 516                 do {
 517                         ch++;
 518                         if (ch > MAX_CHANNEL_NUMBER)
 519                                 goto out; /* scan completed */
 520                 } while (!ieee->active_channel_map[ch]);
 521
 522                 /* this function can be called in two situations
 523                  * 1- We have switched to ad-hoc mode and we are
 524                  *    performing a complete syncro scan before conclude
 525                  *    there are no interesting cell and to create a
 526                  *    new one. In this case the link state is
 527                  *    RTLLIB_NOLINK until we found an interesting cell.
 528                  *    If so the ieee8021_new_net, called by the RX path
 529                  *    will set the state to RTLLIB_LINKED, so we stop
 530                  *    scanning
 531                  * 2- We are linked and the root uses run iwlist scan.
 532                  *    So we switch to RTLLIB_LINKED_SCANNING to remember
 533                  *    that we are still logically linked (not interested in
 534                  *    new network events, despite for updating the net list,
 535                  *    but we are temporarly 'unlinked' as the driver shall
 536                  *    not filter RX frames and the channel is changing.
 537                  * So the only situation in which are interested is to check
 538                  * if the state become LINKED because of the #1 situation
 539                  */
 540
 541                 if (ieee->state == RTLLIB_LINKED)
 542                         goto out;
 543                 if (ieee->sync_scan_hurryup) {
 544                         netdev_info(ieee->dev,
 545                                     "============>sync_scan_hurryup out\n");
 546                         goto out;
 547                 }
 548
 549                 ieee->set_chan(ieee->dev, ch);
 550                 if (ieee->active_channel_map[ch] == 1)
 551                         rtllib_send_probe_requests(ieee, 0);
 552
 553                 /* this prevent excessive time wait when we
 554                  * need to wait for a syncro scan to end..
 555                  */
 556                 msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME);
 557         }
 558 out:
 559         ieee->actscanning = false;
 560         ieee->sync_scan_hurryup = 0;
 561
 562         if (ieee->state >= RTLLIB_LINKED) {
 563                 if (IS_DOT11D_ENABLE(ieee))
 564                         DOT11D_ScanComplete(ieee);
 565         }
 566         up(&ieee->scan_sem);
 567
 568         ieee->be_scan_inprogress = false;
 569
 570         memset(&wrqu, 0, sizeof(wrqu));
 571         wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
 572 }
 573
 574 static void rtllib_softmac_scan_wq(void *data)
 575 {
 576         struct rtllib_device *ieee = container_of_dwork_rsl(data,
 577                                      struct rtllib_device, softmac_scan_wq);
 578         u8 last_channel = ieee->current_network.channel;
 579
 580         rtllib_update_active_chan_map(ieee);
 581
 582         if (!ieee->ieee_up)
 583                 return;
 584         if (rtllib_act_scanning(ieee, true))
 585                 return;
 586
 587         down(&ieee->scan_sem);
 588
 589         if (ieee->eRFPowerState == eRfOff) {
 590                 netdev_info(ieee->dev,
 591                             "======>%s():rf state is eRfOff, return\n",
 592                             __func__);
 593                 goto out1;
 594         }
 595
 596         do {
 597                 ieee->current_network.channel =
 598                         (ieee->current_network.channel + 1) %
 599                         MAX_CHANNEL_NUMBER;
 600                 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) {
 601                         if (!ieee->active_channel_map[ieee->current_network.channel])
 602                                 ieee->current_network.channel = 6;
 603                         goto out; /* no good chans */
 604                 }
 605         } while (!ieee->active_channel_map[ieee->current_network.channel]);
 606
 607         if (ieee->scanning_continue == 0)
 608                 goto out;
 609
 610         ieee->set_chan(ieee->dev, ieee->current_network.channel);
 611
 612         if (ieee->active_channel_map[ieee->current_network.channel] == 1)
 613                 rtllib_send_probe_requests(ieee, 0);
 614
 615         queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq,
 616                                msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME));
 617
 618         up(&ieee->scan_sem);
 619         return;
 620
 621 out:
 622         if (IS_DOT11D_ENABLE(ieee))
 623                 DOT11D_ScanComplete(ieee);
 624         ieee->current_network.channel = last_channel;
 625
 626 out1:
 627         ieee->actscanning = false;
 628         ieee->scan_watch_dog = 0;
 629         ieee->scanning_continue = 0;
 630         up(&ieee->scan_sem);
 631 }
 632
 633
 634
 635 static void rtllib_beacons_start(struct rtllib_device *ieee)
 636 {
 637         unsigned long flags;
 638
 639         spin_lock_irqsave(&ieee->beacon_lock, flags);
 640
 641         ieee->beacon_txing = 1;
 642         rtllib_send_beacon(ieee);
 643
 644         spin_unlock_irqrestore(&ieee->beacon_lock, flags);
 645 }
 646
 647 static void rtllib_beacons_stop(struct rtllib_device *ieee)
 648 {
 649         unsigned long flags;
 650
 651         spin_lock_irqsave(&ieee->beacon_lock, flags);
 652
 653         ieee->beacon_txing = 0;
 654         del_timer_sync(&ieee->beacon_timer);
 655
 656         spin_unlock_irqrestore(&ieee->beacon_lock, flags);
 657
 658 }
 659
 660
 661 void rtllib_stop_send_beacons(struct rtllib_device *ieee)
 662 {
 663         if (ieee->stop_send_beacons)
 664                 ieee->stop_send_beacons(ieee->dev);
 665         if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
 666                 rtllib_beacons_stop(ieee);
 667 }
 668 EXPORT_SYMBOL(rtllib_stop_send_beacons);
 669
 670
 671 void rtllib_start_send_beacons(struct rtllib_device *ieee)
 672 {
 673         if (ieee->start_send_beacons)
 674                 ieee->start_send_beacons(ieee->dev);
 675         if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
 676                 rtllib_beacons_start(ieee);
 677 }
 678 EXPORT_SYMBOL(rtllib_start_send_beacons);
 679
 680
 681 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
 682 {
 683         down(&ieee->scan_sem);
 684         ieee->scan_watch_dog = 0;
 685         if (ieee->scanning_continue == 1) {
 686                 ieee->scanning_continue = 0;
 687                 ieee->actscanning = false;
 688
 689                 cancel_delayed_work(&ieee->softmac_scan_wq);
 690         }
 691
 692         up(&ieee->scan_sem);
 693 }
 694
 695 void rtllib_stop_scan(struct rtllib_device *ieee)
 696 {
 697         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 698                 rtllib_softmac_stop_scan(ieee);
 699         } else {
 700                 if (ieee->rtllib_stop_hw_scan)
 701                         ieee->rtllib_stop_hw_scan(ieee->dev);
 702         }
 703 }
 704 EXPORT_SYMBOL(rtllib_stop_scan);
 705
 706 void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
 707 {
 708         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 709                         ieee->sync_scan_hurryup = 1;
 710         } else {
 711                 if (ieee->rtllib_stop_hw_scan)
 712                         ieee->rtllib_stop_hw_scan(ieee->dev);
 713         }
 714 }
 715 EXPORT_SYMBOL(rtllib_stop_scan_syncro);
 716
 717 bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
 718 {
 719         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 720                 if (sync_scan)
 721                         return ieee->be_scan_inprogress;
 722                 else
 723                         return ieee->actscanning || ieee->be_scan_inprogress;
 724         } else {
 725                 return test_bit(STATUS_SCANNING, &ieee->status);
 726         }
 727 }
 728 EXPORT_SYMBOL(rtllib_act_scanning);
 729
 730 /* called with ieee->lock held */
 731 static void rtllib_start_scan(struct rtllib_device *ieee)
 732 {
 733         RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
 734         if (ieee->rtllib_ips_leave_wq != NULL)
 735                 ieee->rtllib_ips_leave_wq(ieee->dev);
 736
 737         if (IS_DOT11D_ENABLE(ieee)) {
 738                 if (IS_COUNTRY_IE_VALID(ieee))
 739                         RESET_CIE_WATCHDOG(ieee);
 740         }
 741         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 742                 if (ieee->scanning_continue == 0) {
 743                         ieee->actscanning = true;
 744                         ieee->scanning_continue = 1;
 745                         queue_delayed_work_rsl(ieee->wq,
 746                                                &ieee->softmac_scan_wq, 0);
 747                 }
 748         } else {
 749                 if (ieee->rtllib_start_hw_scan)
 750                         ieee->rtllib_start_hw_scan(ieee->dev);
 751         }
 752 }
 753
 754 /* called with wx_sem held */
 755 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
 756 {
 757         if (IS_DOT11D_ENABLE(ieee)) {
 758                 if (IS_COUNTRY_IE_VALID(ieee))
 759                         RESET_CIE_WATCHDOG(ieee);
 760         }
 761         ieee->sync_scan_hurryup = 0;
 762         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 763                 rtllib_softmac_scan_syncro(ieee, is_mesh);
 764         } else {
 765                 if (ieee->rtllib_start_hw_scan)
 766                         ieee->rtllib_start_hw_scan(ieee->dev);
 767         }
 768 }
 769 EXPORT_SYMBOL(rtllib_start_scan_syncro);
 770
 771 inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon,
 772         struct rtllib_device *ieee, int challengelen, u8 *daddr)
 773 {
 774         struct sk_buff *skb;
 775         struct rtllib_authentication *auth;
 776         int  len = 0;
 777
 778         len = sizeof(struct rtllib_authentication) + challengelen +
 779                      ieee->tx_headroom + 4;
 780         skb = dev_alloc_skb(len);
 781
 782         if (!skb)
 783                 return NULL;
 784
 785         skb_reserve(skb, ieee->tx_headroom);
 786
 787         auth = (struct rtllib_authentication *)
 788                 skb_put(skb, sizeof(struct rtllib_authentication));
 789
 790         auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
 791         if (challengelen)
 792                 auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP);
 793
 794         auth->header.duration_id = cpu_to_le16(0x013a);
 795         ether_addr_copy(auth->header.addr1, beacon->bssid);
 796         ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
 797         ether_addr_copy(auth->header.addr3, beacon->bssid);
 798         if (ieee->auth_mode == 0)
 799                 auth->algorithm = WLAN_AUTH_OPEN;
 800         else if (ieee->auth_mode == 1)
 801                 auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY);
 802         else if (ieee->auth_mode == 2)
 803                 auth->algorithm = WLAN_AUTH_OPEN;
 804         auth->transaction = cpu_to_le16(ieee->associate_seq);
 805         ieee->associate_seq++;
 806
 807         auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
 808
 809         return skb;
 810 }
 811
 812 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee,
 813                                          const u8 *dest)
 814 {
 815         u8 *tag;
 816         int beacon_size;
 817         struct rtllib_probe_response *beacon_buf;
 818         struct sk_buff *skb = NULL;
 819         int encrypt;
 820         int atim_len, erp_len;
 821         struct lib80211_crypt_data *crypt;
 822
 823         char *ssid = ieee->current_network.ssid;
 824         int ssid_len = ieee->current_network.ssid_len;
 825         int rate_len = ieee->current_network.rates_len+2;
 826         int rate_ex_len = ieee->current_network.rates_ex_len;
 827         int wpa_ie_len = ieee->wpa_ie_len;
 828         u8 erpinfo_content = 0;
 829
 830         u8 *tmp_ht_cap_buf = NULL;
 831         u8 tmp_ht_cap_len = 0;
 832         u8 *tmp_ht_info_buf = NULL;
 833         u8 tmp_ht_info_len = 0;
 834         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 835         u8 *tmp_generic_ie_buf = NULL;
 836         u8 tmp_generic_ie_len = 0;
 837
 838         if (rate_ex_len > 0)
 839                 rate_ex_len += 2;
 840
 841         if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
 842                 atim_len = 4;
 843         else
 844                 atim_len = 0;
 845
 846         if ((ieee->current_network.mode == IEEE_G) ||
 847            (ieee->current_network.mode == IEEE_N_24G &&
 848            ieee->pHTInfo->bCurSuppCCK)) {
 849                 erp_len = 3;
 850                 erpinfo_content = 0;
 851                 if (ieee->current_network.buseprotection)
 852                         erpinfo_content |= ERP_UseProtection;
 853         } else
 854                 erp_len = 0;
 855
 856         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 857         encrypt = ieee->host_encrypt && crypt && crypt->ops &&
 858                 ((0 == strcmp(crypt->ops->name, "R-WEP") || wpa_ie_len));
 859         if (ieee->pHTInfo->bCurrentHTSupport) {
 860                 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
 861                 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
 862                 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
 863                 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
 864                 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
 865                                              &tmp_ht_cap_len, encrypt, false);
 866                 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
 867                                        encrypt);
 868
 869                 if (pHTInfo->bRegRT2RTAggregation) {
 870                         tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
 871                         tmp_generic_ie_len =
 872                                  sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
 873                         HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
 874                                                    &tmp_generic_ie_len);
 875                 }
 876         }
 877
 878         beacon_size = sizeof(struct rtllib_probe_response)+2+
 879                 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
 880                 + wpa_ie_len + ieee->tx_headroom;
 881         skb = dev_alloc_skb(beacon_size);
 882         if (!skb)
 883                 return NULL;
 884
 885         skb_reserve(skb, ieee->tx_headroom);
 886
 887         beacon_buf = (struct rtllib_probe_response *) skb_put(skb,
 888                      (beacon_size - ieee->tx_headroom));
 889         ether_addr_copy(beacon_buf->header.addr1, dest);
 890         ether_addr_copy(beacon_buf->header.addr2, ieee->dev->dev_addr);
 891         ether_addr_copy(beacon_buf->header.addr3, ieee->current_network.bssid);
 892
 893         beacon_buf->header.duration_id = 0;
 894         beacon_buf->beacon_interval =
 895                 cpu_to_le16(ieee->current_network.beacon_interval);
 896         beacon_buf->capability =
 897                 cpu_to_le16(ieee->current_network.capability &
 898                 WLAN_CAPABILITY_IBSS);
 899         beacon_buf->capability |=
 900                 cpu_to_le16(ieee->current_network.capability &
 901                 WLAN_CAPABILITY_SHORT_PREAMBLE);
 902
 903         if (ieee->short_slot && (ieee->current_network.capability &
 904             WLAN_CAPABILITY_SHORT_SLOT_TIME))
 905                 beacon_buf->capability |=
 906                         cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
 907
 908         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 909         if (encrypt)
 910                 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
 911
 912
 913         beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
 914         beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
 915         beacon_buf->info_element[0].len = ssid_len;
 916
 917         tag = (u8 *) beacon_buf->info_element[0].data;
 918
 919         memcpy(tag, ssid, ssid_len);
 920
 921         tag += ssid_len;
 922
 923         *(tag++) = MFIE_TYPE_RATES;
 924         *(tag++) = rate_len-2;
 925         memcpy(tag, ieee->current_network.rates, rate_len-2);
 926         tag += rate_len-2;
 927
 928         *(tag++) = MFIE_TYPE_DS_SET;
 929         *(tag++) = 1;
 930         *(tag++) = ieee->current_network.channel;
 931
 932         if (atim_len) {
 933                 u16 val16;
 934                 *(tag++) = MFIE_TYPE_IBSS_SET;
 935                 *(tag++) = 2;
 936                 val16 = ieee->current_network.atim_window;
 937                 memcpy((u8 *)tag, (u8 *)&val16, 2);
 938                 tag += 2;
 939         }
 940
 941         if (erp_len) {
 942                 *(tag++) = MFIE_TYPE_ERP;
 943                 *(tag++) = 1;
 944                 *(tag++) = erpinfo_content;
 945         }
 946         if (rate_ex_len) {
 947                 *(tag++) = MFIE_TYPE_RATES_EX;
 948                 *(tag++) = rate_ex_len-2;
 949                 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
 950                 tag += rate_ex_len-2;
 951         }
 952
 953         if (wpa_ie_len) {
 954                 if (ieee->iw_mode == IW_MODE_ADHOC)
 955                         memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
 956                 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
 957                 tag += ieee->wpa_ie_len;
 958         }
 959         return skb;
 960 }
 961
 962 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
 963 {
 964         struct sk_buff *skb;
 965         u8 *tag;
 966
 967         struct lib80211_crypt_data *crypt;
 968         struct rtllib_assoc_response_frame *assoc;
 969         short encrypt;
 970
 971         unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
 972         int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
 973                   ieee->tx_headroom;
 974
 975         skb = dev_alloc_skb(len);
 976
 977         if (!skb)
 978                 return NULL;
 979
 980         skb_reserve(skb, ieee->tx_headroom);
 981
 982         assoc = (struct rtllib_assoc_response_frame *)
 983                 skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
 984
 985         assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
 986         ether_addr_copy(assoc->header.addr1, dest);
 987         ether_addr_copy(assoc->header.addr3, ieee->dev->dev_addr);
 988         ether_addr_copy(assoc->header.addr2, ieee->dev->dev_addr);
 989         assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
 990                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
 991
 992
 993         if (ieee->short_slot)
 994                 assoc->capability |=
 995                                  cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
 996
 997         if (ieee->host_encrypt)
 998                 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 999         else
1000                 crypt = NULL;
1001
1002         encrypt = (crypt && crypt->ops);
1003
1004         if (encrypt)
1005                 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1006
1007         assoc->status = 0;
1008         assoc->aid = cpu_to_le16(ieee->assoc_id);
1009         if (ieee->assoc_id == 0x2007)
1010                 ieee->assoc_id = 0;
1011         else
1012                 ieee->assoc_id++;
1013
1014         tag = (u8 *) skb_put(skb, rate_len);
1015         rtllib_MFIE_Brate(ieee, &tag);
1016         rtllib_MFIE_Grate(ieee, &tag);
1017
1018         return skb;
1019 }
1020
1021 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1022                                  u8 *dest)
1023 {
1024         struct sk_buff *skb = NULL;
1025         struct rtllib_authentication *auth;
1026         int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1027
1028         skb = dev_alloc_skb(len);
1029         if (!skb)
1030                 return NULL;
1031
1032         skb->len = sizeof(struct rtllib_authentication);
1033
1034         skb_reserve(skb, ieee->tx_headroom);
1035
1036         auth = (struct rtllib_authentication *)
1037                 skb_put(skb, sizeof(struct rtllib_authentication));
1038
1039         auth->status = cpu_to_le16(status);
1040         auth->transaction = cpu_to_le16(2);
1041         auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1042
1043         ether_addr_copy(auth->header.addr3, ieee->dev->dev_addr);
1044         ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
1045         ether_addr_copy(auth->header.addr1, dest);
1046         auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1047         return skb;
1048
1049
1050 }
1051
1052 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1053 {
1054         struct sk_buff *skb;
1055         struct rtllib_hdr_3addr *hdr;
1056
1057         skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1058         if (!skb)
1059                 return NULL;
1060
1061         skb_reserve(skb, ieee->tx_headroom);
1062
1063         hdr = (struct rtllib_hdr_3addr *)skb_put(skb,
1064               sizeof(struct rtllib_hdr_3addr));
1065
1066         ether_addr_copy(hdr->addr1, ieee->current_network.bssid);
1067         ether_addr_copy(hdr->addr2, ieee->dev->dev_addr);
1068         ether_addr_copy(hdr->addr3, ieee->current_network.bssid);
1069
1070         hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1071                 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1072                 (pwr ? RTLLIB_FCTL_PM : 0));
1073
1074         return skb;
1075
1076
1077 }
1078
1079 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1080 {
1081         struct sk_buff *skb;
1082         struct rtllib_pspoll_hdr *hdr;
1083
1084         skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1085         if (!skb)
1086                 return NULL;
1087
1088         skb_reserve(skb, ieee->tx_headroom);
1089
1090         hdr = (struct rtllib_pspoll_hdr *)skb_put(skb,
1091               sizeof(struct rtllib_pspoll_hdr));
1092
1093         ether_addr_copy(hdr->bssid, ieee->current_network.bssid);
1094         ether_addr_copy(hdr->ta, ieee->dev->dev_addr);
1095
1096         hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1097         hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1098                          RTLLIB_FCTL_PM);
1099
1100         return skb;
1101
1102 }
1103
1104 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1105 {
1106         struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1107
1108         if (buf)
1109                 softmac_mgmt_xmit(buf, ieee);
1110 }
1111
1112
1113 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1114 {
1115         struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1116
1117         if (buf)
1118                 softmac_mgmt_xmit(buf, ieee);
1119 }
1120
1121
1122 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1123 {
1124         struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1125
1126         if (buf)
1127                 softmac_mgmt_xmit(buf, ieee);
1128 }
1129
1130
1131 inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1132 {
1133         int i = 0;
1134
1135         do {
1136                 if ((ieee->PMKIDList[i].bUsed) &&
1137                    (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1138                         break;
1139                 i++;
1140         } while (i < NUM_PMKID_CACHE);
1141
1142         if (i == NUM_PMKID_CACHE)
1143                 i = -1;
1144         return i;
1145 }
1146
1147 inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon,
1148                                               struct rtllib_device *ieee)
1149 {
1150         struct sk_buff *skb;
1151         struct rtllib_assoc_request_frame *hdr;
1152         u8 *tag, *ies;
1153         int i;
1154         u8 *ht_cap_buf = NULL;
1155         u8 ht_cap_len = 0;
1156         u8 *realtek_ie_buf = NULL;
1157         u8 realtek_ie_len = 0;
1158         int wpa_ie_len = ieee->wpa_ie_len;
1159         int wps_ie_len = ieee->wps_ie_len;
1160         unsigned int ckip_ie_len = 0;
1161         unsigned int ccxrm_ie_len = 0;
1162         unsigned int cxvernum_ie_len = 0;
1163         struct lib80211_crypt_data *crypt;
1164         int encrypt;
1165         int     PMKCacheIdx;
1166
1167         unsigned int rate_len = (beacon->rates_len ?
1168                                 (beacon->rates_len + 2) : 0) +
1169                                 (beacon->rates_ex_len ? (beacon->rates_ex_len) +
1170                                 2 : 0);
1171
1172         unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1173         unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1174
1175         int len = 0;
1176
1177         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1178         if (crypt != NULL)
1179                 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1180                           ((0 == strcmp(crypt->ops->name, "R-WEP") ||
1181                           wpa_ie_len));
1182         else
1183                 encrypt = 0;
1184
1185         if ((ieee->rtllib_ap_sec_type &&
1186             (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1187             ieee->bForcedBgMode) {
1188                 ieee->pHTInfo->bEnableHT = 0;
1189                 ieee->mode = WIRELESS_MODE_G;
1190         }
1191
1192         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1193                 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1194                 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1195                 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1196                                              encrypt, true);
1197                 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1198                         realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1199                         realtek_ie_len =
1200                                  sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1201                         HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1202                                                    &realtek_ie_len);
1203                 }
1204         }
1205
1206         if (beacon->bCkipSupported)
1207                 ckip_ie_len = 30+2;
1208         if (beacon->bCcxRmEnable)
1209                 ccxrm_ie_len = 6+2;
1210         if (beacon->BssCcxVerNumber >= 2)
1211                 cxvernum_ie_len = 5+2;
1212
1213         PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1214         if (PMKCacheIdx >= 0) {
1215                 wpa_ie_len += 18;
1216                 netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n",
1217                             wpa_ie_len);
1218         }
1219         len = sizeof(struct rtllib_assoc_request_frame) + 2
1220                 + beacon->ssid_len
1221                 + rate_len
1222                 + wpa_ie_len
1223                 + wps_ie_len
1224                 + wmm_info_len
1225                 + turbo_info_len
1226                 + ht_cap_len
1227                 + realtek_ie_len
1228                 + ckip_ie_len
1229                 + ccxrm_ie_len
1230                 + cxvernum_ie_len
1231                 + ieee->tx_headroom;
1232
1233         skb = dev_alloc_skb(len);
1234
1235         if (!skb)
1236                 return NULL;
1237
1238         skb_reserve(skb, ieee->tx_headroom);
1239
1240         hdr = (struct rtllib_assoc_request_frame *)
1241                 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1242
1243
1244         hdr->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_REQ);
1245         hdr->header.duration_id = cpu_to_le16(37);
1246         ether_addr_copy(hdr->header.addr1, beacon->bssid);
1247         ether_addr_copy(hdr->header.addr2, ieee->dev->dev_addr);
1248         ether_addr_copy(hdr->header.addr3, beacon->bssid);
1249
1250         ether_addr_copy(ieee->ap_mac_addr, beacon->bssid);
1251
1252         hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1253         if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1254                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1255
1256         if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1257                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1258
1259         if (ieee->short_slot &&
1260            (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1261                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1262
1263
1264         hdr->listen_interval = cpu_to_le16(beacon->listen_interval);
1265
1266         hdr->info_element[0].id = MFIE_TYPE_SSID;
1267
1268         hdr->info_element[0].len = beacon->ssid_len;
1269         tag = skb_put(skb, beacon->ssid_len);
1270         memcpy(tag, beacon->ssid, beacon->ssid_len);
1271
1272         tag = skb_put(skb, rate_len);
1273
1274         if (beacon->rates_len) {
1275                 *tag++ = MFIE_TYPE_RATES;
1276                 *tag++ = beacon->rates_len;
1277                 for (i = 0; i < beacon->rates_len; i++)
1278                         *tag++ = beacon->rates[i];
1279         }
1280
1281         if (beacon->rates_ex_len) {
1282                 *tag++ = MFIE_TYPE_RATES_EX;
1283                 *tag++ = beacon->rates_ex_len;
1284                 for (i = 0; i < beacon->rates_ex_len; i++)
1285                         *tag++ = beacon->rates_ex[i];
1286         }
1287
1288         if (beacon->bCkipSupported) {
1289                 static const u8 AironetIeOui[] = {0x00, 0x01, 0x66};
1290                 u8      CcxAironetBuf[30];
1291                 struct octet_string osCcxAironetIE;
1292
1293                 memset(CcxAironetBuf, 0, 30);
1294                 osCcxAironetIE.Octet = CcxAironetBuf;
1295                 osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1296                 memcpy(osCcxAironetIE.Octet, AironetIeOui,
1297                        sizeof(AironetIeOui));
1298
1299                 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1300                                          (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1301                 tag = skb_put(skb, ckip_ie_len);
1302                 *tag++ = MFIE_TYPE_AIRONET;
1303                 *tag++ = osCcxAironetIE.Length;
1304                 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1305                 tag += osCcxAironetIE.Length;
1306         }
1307
1308         if (beacon->bCcxRmEnable) {
1309                 static const u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01,
1310                         0x00};
1311                 struct octet_string osCcxRmCap;
1312
1313                 osCcxRmCap.Octet = (u8 *) CcxRmCapBuf;
1314                 osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1315                 tag = skb_put(skb, ccxrm_ie_len);
1316                 *tag++ = MFIE_TYPE_GENERIC;
1317                 *tag++ = osCcxRmCap.Length;
1318                 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1319                 tag += osCcxRmCap.Length;
1320         }
1321
1322         if (beacon->BssCcxVerNumber >= 2) {
1323                 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1324                 struct octet_string osCcxVerNum;
1325
1326                 CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1327                 osCcxVerNum.Octet = CcxVerNumBuf;
1328                 osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1329                 tag = skb_put(skb, cxvernum_ie_len);
1330                 *tag++ = MFIE_TYPE_GENERIC;
1331                 *tag++ = osCcxVerNum.Length;
1332                 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1333                 tag += osCcxVerNum.Length;
1334         }
1335         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1336                 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1337                         tag = skb_put(skb, ht_cap_len);
1338                         *tag++ = MFIE_TYPE_HT_CAP;
1339                         *tag++ = ht_cap_len - 2;
1340                         memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1341                         tag += ht_cap_len - 2;
1342                 }
1343         }
1344
1345         if (wpa_ie_len) {
1346                 tag = skb_put(skb, ieee->wpa_ie_len);
1347                 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
1348
1349                 if (PMKCacheIdx >= 0) {
1350                         tag = skb_put(skb, 18);
1351                         *tag = 1;
1352                         *(tag + 1) = 0;
1353                         memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1354                                16);
1355                 }
1356         }
1357         if (wmm_info_len) {
1358                 tag = skb_put(skb, wmm_info_len);
1359                 rtllib_WMM_Info(ieee, &tag);
1360         }
1361
1362         if (wps_ie_len && ieee->wps_ie) {
1363                 tag = skb_put(skb, wps_ie_len);
1364                 memcpy(tag, ieee->wps_ie, wps_ie_len);
1365         }
1366
1367         tag = skb_put(skb, turbo_info_len);
1368         if (turbo_info_len)
1369                 rtllib_TURBO_Info(ieee, &tag);
1370
1371         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1372                 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1373                         tag = skb_put(skb, ht_cap_len);
1374                         *tag++ = MFIE_TYPE_GENERIC;
1375                         *tag++ = ht_cap_len - 2;
1376                         memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1377                         tag += ht_cap_len - 2;
1378                 }
1379
1380                 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1381                         tag = skb_put(skb, realtek_ie_len);
1382                         *tag++ = MFIE_TYPE_GENERIC;
1383                         *tag++ = realtek_ie_len - 2;
1384                         memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1385                 }
1386         }
1387
1388         kfree(ieee->assocreq_ies);
1389         ieee->assocreq_ies = NULL;
1390         ies = &(hdr->info_element[0].id);
1391         ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1392         ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
1393         if (ieee->assocreq_ies)
1394                 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
1395         else {
1396                 netdev_info(ieee->dev,
1397                             "%s()Warning: can't alloc memory for assocreq_ies\n",
1398                             __func__);
1399                 ieee->assocreq_ies_len = 0;
1400         }
1401         return skb;
1402 }
1403
1404 void rtllib_associate_abort(struct rtllib_device *ieee)
1405 {
1406         unsigned long flags;
1407
1408         spin_lock_irqsave(&ieee->lock, flags);
1409
1410         ieee->associate_seq++;
1411
1412         /* don't scan, and avoid to have the RX path possibily
1413          * try again to associate. Even do not react to AUTH or
1414          * ASSOC response. Just wait for the retry wq to be scheduled.
1415          * Here we will check if there are good nets to associate
1416          * with, so we retry or just get back to NO_LINK and scanning
1417          */
1418         if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1419                 netdev_dbg(ieee->dev, "Authentication failed\n");
1420                 ieee->softmac_stats.no_auth_rs++;
1421         } else {
1422                 netdev_dbg(ieee->dev, "Association failed\n");
1423                 ieee->softmac_stats.no_ass_rs++;
1424         }
1425
1426         ieee->state = RTLLIB_ASSOCIATING_RETRY;
1427
1428         queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq,
1429                            RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1430
1431         spin_unlock_irqrestore(&ieee->lock, flags);
1432 }
1433
1434 static void rtllib_associate_abort_cb(unsigned long dev)
1435 {
1436         rtllib_associate_abort((struct rtllib_device *) dev);
1437 }
1438
1439 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr)
1440 {
1441         struct rtllib_network *beacon = &ieee->current_network;
1442         struct sk_buff *skb;
1443
1444         netdev_dbg(ieee->dev, "Stopping scan\n");
1445
1446         ieee->softmac_stats.tx_auth_rq++;
1447
1448         skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1449
1450         if (!skb)
1451                 rtllib_associate_abort(ieee);
1452         else {
1453                 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING;
1454                 netdev_dbg(ieee->dev, "Sending authentication request\n");
1455                 softmac_mgmt_xmit(skb, ieee);
1456                 if (!timer_pending(&ieee->associate_timer)) {
1457                         ieee->associate_timer.expires = jiffies + (HZ / 2);
1458                         add_timer(&ieee->associate_timer);
1459                 }
1460         }
1461 }
1462
1463 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge,
1464                                   int chlen)
1465 {
1466         u8 *c;
1467         struct sk_buff *skb;
1468         struct rtllib_network *beacon = &ieee->current_network;
1469
1470         ieee->associate_seq++;
1471         ieee->softmac_stats.tx_auth_rq++;
1472
1473         skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1474
1475         if (!skb)
1476                 rtllib_associate_abort(ieee);
1477         else {
1478                 c = skb_put(skb, chlen+2);
1479                 *(c++) = MFIE_TYPE_CHALLENGE;
1480                 *(c++) = chlen;
1481                 memcpy(c, challenge, chlen);
1482
1483                 netdev_dbg(ieee->dev,
1484                            "Sending authentication challenge response\n");
1485
1486                 rtllib_encrypt_fragment(ieee, skb,
1487                                         sizeof(struct rtllib_hdr_3addr));
1488
1489                 softmac_mgmt_xmit(skb, ieee);
1490                 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1491         }
1492         kfree(challenge);
1493 }
1494
1495 static void rtllib_associate_step2(struct rtllib_device *ieee)
1496 {
1497         struct sk_buff *skb;
1498         struct rtllib_network *beacon = &ieee->current_network;
1499
1500         del_timer_sync(&ieee->associate_timer);
1501
1502         netdev_dbg(ieee->dev, "Sending association request\n");
1503
1504         ieee->softmac_stats.tx_ass_rq++;
1505         skb = rtllib_association_req(beacon, ieee);
1506         if (!skb)
1507                 rtllib_associate_abort(ieee);
1508         else {
1509                 softmac_mgmt_xmit(skb, ieee);
1510                 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1511         }
1512 }
1513
1514 #define CANCELLED  2
1515 static void rtllib_associate_complete_wq(void *data)
1516 {
1517         struct rtllib_device *ieee = (struct rtllib_device *)
1518                                      container_of_work_rsl(data,
1519                                      struct rtllib_device,
1520                                      associate_complete_wq);
1521         struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1522                                         (&(ieee->PowerSaveControl));
1523         netdev_info(ieee->dev, "Associated successfully\n");
1524         if (!ieee->is_silent_reset) {
1525                 netdev_info(ieee->dev, "normal associate\n");
1526                 notify_wx_assoc_event(ieee);
1527         }
1528
1529         netif_carrier_on(ieee->dev);
1530         ieee->is_roaming = false;
1531         if (rtllib_is_54g(&ieee->current_network) &&
1532            (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1533                 ieee->rate = 108;
1534                 netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate);
1535         } else {
1536                 ieee->rate = 22;
1537                 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1538                 netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate);
1539         }
1540         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1541                 netdev_info(ieee->dev, "Successfully associated, ht enabled\n");
1542                 HTOnAssocRsp(ieee);
1543         } else {
1544                 netdev_info(ieee->dev,
1545                             "Successfully associated, ht not enabled(%d, %d)\n",
1546                             ieee->pHTInfo->bCurrentHTSupport,
1547                             ieee->pHTInfo->bEnableHT);
1548                 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1549         }
1550         ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1551                                        ieee->current_network.beacon_interval /
1552                                        500);
1553         if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1554             ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1555                 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1556                 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1557         }
1558         pPSC->LpsIdleCount = 0;
1559         ieee->link_change(ieee->dev);
1560
1561         if (ieee->is_silent_reset) {
1562                 netdev_info(ieee->dev, "silent reset associate\n");
1563                 ieee->is_silent_reset = false;
1564         }
1565
1566         if (ieee->data_hard_resume)
1567                 ieee->data_hard_resume(ieee->dev);
1568
1569 }
1570
1571 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1572 {
1573 }
1574
1575 static void rtllib_associate_complete(struct rtllib_device *ieee)
1576 {
1577         del_timer_sync(&ieee->associate_timer);
1578
1579         ieee->state = RTLLIB_LINKED;
1580         rtllib_sta_send_associnfo(ieee);
1581
1582         queue_work_rsl(ieee->wq, &ieee->associate_complete_wq);
1583 }
1584
1585 static void rtllib_associate_procedure_wq(void *data)
1586 {
1587         struct rtllib_device *ieee = container_of_dwork_rsl(data,
1588                                      struct rtllib_device,
1589                                      associate_procedure_wq);
1590         rtllib_stop_scan_syncro(ieee);
1591         if (ieee->rtllib_ips_leave != NULL)
1592                 ieee->rtllib_ips_leave(ieee->dev);
1593         down(&ieee->wx_sem);
1594
1595         if (ieee->data_hard_stop)
1596                 ieee->data_hard_stop(ieee->dev);
1597
1598         rtllib_stop_scan(ieee);
1599         RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1600                  ieee->current_network.channel);
1601         HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1602         if (ieee->eRFPowerState == eRfOff) {
1603                 RT_TRACE(COMP_DBG,
1604                          "=============>%s():Rf state is eRfOff, schedule ipsleave wq again,return\n",
1605                          __func__);
1606                 if (ieee->rtllib_ips_leave_wq != NULL)
1607                         ieee->rtllib_ips_leave_wq(ieee->dev);
1608                 up(&ieee->wx_sem);
1609                 return;
1610         }
1611         ieee->associate_seq = 1;
1612
1613         rtllib_associate_step1(ieee, ieee->current_network.bssid);
1614
1615         up(&ieee->wx_sem);
1616 }
1617
1618 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1619                                    struct rtllib_network *net)
1620 {
1621         u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1622         int tmp_ssid_len = 0;
1623
1624         short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1625
1626         /* we are interested in new new only if we are not associated
1627          * and we are not associating / authenticating
1628          */
1629         if (ieee->state != RTLLIB_NOLINK)
1630                 return;
1631
1632         if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1633             WLAN_CAPABILITY_ESS))
1634                 return;
1635
1636         if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1637              WLAN_CAPABILITY_IBSS))
1638                 return;
1639
1640         if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1641             (net->channel > ieee->ibss_maxjoin_chal))
1642                 return;
1643         if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1644                 /* if the user specified the AP MAC, we need also the essid
1645                  * This could be obtained by beacons or, if the network does not
1646                  * broadcast it, it can be put manually.
1647                  */
1648                 apset = ieee->wap_set;
1649                 ssidset = ieee->ssid_set;
1650                 ssidbroad =  !(net->ssid_len == 0 || net->ssid[0] == '\0');
1651                 apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1652                                   ETH_ALEN) == 0);
1653                 if (!ssidbroad) {
1654                         ssidmatch = (ieee->current_network.ssid_len ==
1655                                     net->hidden_ssid_len) &&
1656                                     (!strncmp(ieee->current_network.ssid,
1657                                     net->hidden_ssid, net->hidden_ssid_len));
1658                         if (net->hidden_ssid_len > 0) {
1659                                 strncpy(net->ssid, net->hidden_ssid,
1660                                         net->hidden_ssid_len);
1661                                 net->ssid_len = net->hidden_ssid_len;
1662                                 ssidbroad = 1;
1663                         }
1664                 } else
1665                         ssidmatch =
1666                            (ieee->current_network.ssid_len == net->ssid_len) &&
1667                            (!strncmp(ieee->current_network.ssid, net->ssid,
1668                            net->ssid_len));
1669
1670                 /* if the user set the AP check if match.
1671                  * if the network does not broadcast essid we check the
1672                  *       user supplied ANY essid
1673                  * if the network does broadcast and the user does not set
1674                  *       essid it is OK
1675                  * if the network does broadcast and the user did set essid
1676                  * check if essid match
1677                  * if the ap is not set, check that the user set the bssid
1678                  * and the network does broadcast and that those two bssid match
1679                  */
1680                 if ((apset && apmatch &&
1681                    ((ssidset && ssidbroad && ssidmatch) ||
1682                    (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1683                    (!apset && ssidset && ssidbroad && ssidmatch) ||
1684                    (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1685                         /* if the essid is hidden replace it with the
1686                          * essid provided by the user.
1687                          */
1688                         if (!ssidbroad) {
1689                                 strncpy(tmp_ssid, ieee->current_network.ssid,
1690                                         IW_ESSID_MAX_SIZE);
1691                                 tmp_ssid_len = ieee->current_network.ssid_len;
1692                         }
1693                         memcpy(&ieee->current_network, net,
1694                                sizeof(struct rtllib_network));
1695                         if (!ssidbroad) {
1696                                 strncpy(ieee->current_network.ssid, tmp_ssid,
1697                                         IW_ESSID_MAX_SIZE);
1698                                 ieee->current_network.ssid_len = tmp_ssid_len;
1699                         }
1700                         netdev_info(ieee->dev,
1701                                     "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d, mode:%x cur_net.flags:0x%x\n",
1702                                     ieee->current_network.ssid,
1703                                     ieee->current_network.channel,
1704                                     ieee->current_network.qos_data.supported,
1705                                     ieee->pHTInfo->bEnableHT,
1706                                     ieee->current_network.bssht.bdSupportHT,
1707                                     ieee->current_network.mode,
1708                                     ieee->current_network.flags);
1709
1710                         if ((rtllib_act_scanning(ieee, false)) &&
1711                            !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1712                                 rtllib_stop_scan_syncro(ieee);
1713
1714                         HTResetIOTSetting(ieee->pHTInfo);
1715                         ieee->wmm_acm = 0;
1716                         if (ieee->iw_mode == IW_MODE_INFRA) {
1717                                 /* Join the network for the first time */
1718                                 ieee->AsocRetryCount = 0;
1719                                 if ((ieee->current_network.qos_data.supported == 1) &&
1720                                     ieee->current_network.bssht.bdSupportHT)
1721                                         HTResetSelfAndSavePeerSetting(ieee,
1722                                                  &(ieee->current_network));
1723                                 else
1724                                         ieee->pHTInfo->bCurrentHTSupport =
1725                                                                  false;
1726
1727                                 ieee->state = RTLLIB_ASSOCIATING;
1728                                 if (ieee->LedControlHandler != NULL)
1729                                         ieee->LedControlHandler(ieee->dev,
1730                                                          LED_CTL_START_TO_LINK);
1731                                 queue_delayed_work_rsl(ieee->wq,
1732                                            &ieee->associate_procedure_wq, 0);
1733                         } else {
1734                                 if (rtllib_is_54g(&ieee->current_network) &&
1735                                     (ieee->modulation &
1736                                      RTLLIB_OFDM_MODULATION)) {
1737                                         ieee->rate = 108;
1738                                         ieee->SetWirelessMode(ieee->dev,
1739                                                               IEEE_G);
1740                                         netdev_info(ieee->dev,
1741                                                     "Using G rates\n");
1742                                 } else {
1743                                         ieee->rate = 22;
1744                                         ieee->SetWirelessMode(ieee->dev,
1745                                                               IEEE_B);
1746                                         netdev_info(ieee->dev,
1747                                                     "Using B rates\n");
1748                                 }
1749                                 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1750                                 ieee->state = RTLLIB_LINKED;
1751                         }
1752                 }
1753         }
1754 }
1755
1756 void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1757 {
1758         unsigned long flags;
1759         struct rtllib_network *target;
1760
1761         spin_lock_irqsave(&ieee->lock, flags);
1762
1763         list_for_each_entry(target, &ieee->network_list, list) {
1764
1765                 /* if the state become different that NOLINK means
1766                  * we had found what we are searching for
1767                  */
1768
1769                 if (ieee->state != RTLLIB_NOLINK)
1770                         break;
1771
1772                 if (ieee->scan_age == 0 || time_after(target->last_scanned +
1773                     ieee->scan_age, jiffies))
1774                         rtllib_softmac_new_net(ieee, target);
1775         }
1776         spin_unlock_irqrestore(&ieee->lock, flags);
1777 }
1778
1779 static inline u16 auth_parse(struct net_device *dev, struct sk_buff *skb,
1780                              u8 **challenge, int *chlen)
1781 {
1782         struct rtllib_authentication *a;
1783         u8 *t;
1784
1785         if (skb->len <  (sizeof(struct rtllib_authentication) -
1786             sizeof(struct rtllib_info_element))) {
1787                 netdev_dbg(dev, "invalid len in auth resp: %d\n", skb->len);
1788                 return 0xcafe;
1789         }
1790         *challenge = NULL;
1791         a = (struct rtllib_authentication *) skb->data;
1792         if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1793                 t = skb->data + sizeof(struct rtllib_authentication);
1794
1795                 if (*(t++) == MFIE_TYPE_CHALLENGE) {
1796                         *chlen = *(t++);
1797                         *challenge = kmemdup(t, *chlen, GFP_ATOMIC);
1798                         if (!*challenge)
1799                                 return -ENOMEM;
1800                 }
1801         }
1802         return le16_to_cpu(a->status);
1803 }
1804
1805 static int auth_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest)
1806 {
1807         struct rtllib_authentication *a;
1808
1809         if (skb->len <  (sizeof(struct rtllib_authentication) -
1810             sizeof(struct rtllib_info_element))) {
1811                 netdev_dbg(dev, "invalid len in auth request: %d\n", skb->len);
1812                 return -1;
1813         }
1814         a = (struct rtllib_authentication *) skb->data;
1815
1816         ether_addr_copy(dest, a->header.addr2);
1817
1818         if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1819                 return  WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1820
1821         return WLAN_STATUS_SUCCESS;
1822 }
1823
1824 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1825                             u8 *src)
1826 {
1827         u8 *tag;
1828         u8 *skbend;
1829         u8 *ssid = NULL;
1830         u8 ssidlen = 0;
1831         struct rtllib_hdr_3addr   *header =
1832                 (struct rtllib_hdr_3addr   *) skb->data;
1833         bool bssid_match;
1834
1835         if (skb->len < sizeof(struct rtllib_hdr_3addr))
1836                 return -1; /* corrupted */
1837
1838         bssid_match =
1839           (!ether_addr_equal(header->addr3, ieee->current_network.bssid)) &&
1840           (!is_broadcast_ether_addr(header->addr3));
1841         if (bssid_match)
1842                 return -1;
1843
1844         ether_addr_copy(src, header->addr2);
1845
1846         skbend = (u8 *)skb->data + skb->len;
1847
1848         tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1849
1850         while (tag + 1 < skbend) {
1851                 if (*tag == 0) {
1852                         ssid = tag + 2;
1853                         ssidlen = *(tag + 1);
1854                         break;
1855                 }
1856                 tag++; /* point to the len field */
1857                 tag = tag + *(tag); /* point to the last data byte of the tag */
1858                 tag++; /* point to the next tag */
1859         }
1860
1861         if (ssidlen == 0)
1862                 return 1;
1863
1864         if (!ssid)
1865                 return 1; /* ssid not found in tagged param */
1866
1867         return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1868 }
1869
1870 static int assoc_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest)
1871 {
1872         struct rtllib_assoc_request_frame *a;
1873
1874         if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1875                 sizeof(struct rtllib_info_element))) {
1876                 netdev_dbg(dev, "invalid len in auth request:%d\n", skb->len);
1877                 return -1;
1878         }
1879
1880         a = (struct rtllib_assoc_request_frame *) skb->data;
1881
1882         ether_addr_copy(dest, a->header.addr2);
1883
1884         return 0;
1885 }
1886
1887 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1888                               int *aid)
1889 {
1890         struct rtllib_assoc_response_frame *response_head;
1891         u16 status_code;
1892
1893         if (skb->len <  sizeof(struct rtllib_assoc_response_frame)) {
1894                 netdev_dbg(ieee->dev, "Invalid len in auth resp: %d\n",
1895                            skb->len);
1896                 return 0xcafe;
1897         }
1898
1899         response_head = (struct rtllib_assoc_response_frame *) skb->data;
1900         *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1901
1902         status_code = le16_to_cpu(response_head->status);
1903         if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1904            status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1905            ((ieee->mode == IEEE_G) &&
1906            (ieee->current_network.mode == IEEE_N_24G) &&
1907            (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1908                 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1909         } else {
1910                 ieee->AsocRetryCount = 0;
1911         }
1912
1913         return le16_to_cpu(response_head->status);
1914 }
1915
1916 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1917 {
1918         u8 dest[ETH_ALEN];
1919
1920         ieee->softmac_stats.rx_probe_rq++;
1921         if (probe_rq_parse(ieee, skb, dest) > 0) {
1922                 ieee->softmac_stats.tx_probe_rs++;
1923                 rtllib_resp_to_probe(ieee, dest);
1924         }
1925 }
1926
1927 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1928                                      struct sk_buff *skb)
1929 {
1930         u8 dest[ETH_ALEN];
1931         int status;
1932
1933         ieee->softmac_stats.rx_auth_rq++;
1934
1935         status = auth_rq_parse(ieee->dev, skb, dest);
1936         if (status != -1)
1937                 rtllib_resp_to_auth(ieee, status, dest);
1938 }
1939
1940 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1941                                       struct sk_buff *skb)
1942 {
1943         u8 dest[ETH_ALEN];
1944
1945
1946         ieee->softmac_stats.rx_ass_rq++;
1947         if (assoc_rq_parse(ieee->dev, skb, dest) != -1)
1948                 rtllib_resp_to_assoc_rq(ieee, dest);
1949
1950         netdev_info(ieee->dev, "New client associated: %pM\n", dest);
1951 }
1952
1953 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1954 {
1955
1956         struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1957
1958         if (buf)
1959                 softmac_ps_mgmt_xmit(buf, ieee);
1960 }
1961 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1962
1963 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1964 {
1965         struct sk_buff *buf = rtllib_pspoll_func(ieee);
1966
1967         if (buf)
1968                 softmac_ps_mgmt_xmit(buf, ieee);
1969 }
1970
1971 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1972 {
1973         int timeout = ieee->ps_timeout;
1974         u8 dtim;
1975         struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1976                                         (&(ieee->PowerSaveControl));
1977
1978         if (ieee->LPSDelayCnt) {
1979                 ieee->LPSDelayCnt--;
1980                 return 0;
1981         }
1982
1983         dtim = ieee->current_network.dtim_data;
1984         if (!(dtim & RTLLIB_DTIM_VALID))
1985                 return 0;
1986         timeout = ieee->current_network.beacon_interval;
1987         ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1988         /* there's no need to nofity AP that I find you buffered
1989          * with broadcast packet
1990          */
1991         if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1992                 return 2;
1993
1994         if (!time_after(jiffies,
1995                         ieee->dev->trans_start + msecs_to_jiffies(timeout)))
1996                 return 0;
1997         if (!time_after(jiffies,
1998                         ieee->last_rx_ps_time + msecs_to_jiffies(timeout)))
1999                 return 0;
2000         if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
2001             (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
2002                 return 0;
2003
2004         if (time) {
2005                 if (ieee->bAwakePktSent) {
2006                         pPSC->LPSAwakeIntvl = 1;
2007                 } else {
2008                         u8 MaxPeriod = 1;
2009
2010                         if (pPSC->LPSAwakeIntvl == 0)
2011                                 pPSC->LPSAwakeIntvl = 1;
2012                         if (pPSC->RegMaxLPSAwakeIntvl == 0)
2013                                 MaxPeriod = 1;
2014                         else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2015                                 MaxPeriod = ieee->current_network.dtim_period;
2016                         else
2017                                 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2018                         pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2019                                                MaxPeriod) ? MaxPeriod :
2020                                                (pPSC->LPSAwakeIntvl + 1);
2021                 }
2022                 {
2023                         u8 LPSAwakeIntvl_tmp = 0;
2024                         u8 period = ieee->current_network.dtim_period;
2025                         u8 count = ieee->current_network.tim.tim_count;
2026
2027                         if (count == 0) {
2028                                 if (pPSC->LPSAwakeIntvl > period)
2029                                         LPSAwakeIntvl_tmp = period +
2030                                                  (pPSC->LPSAwakeIntvl -
2031                                                  period) -
2032                                                  ((pPSC->LPSAwakeIntvl-period) %
2033                                                  period);
2034                                 else
2035                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2036
2037                         } else {
2038                                 if (pPSC->LPSAwakeIntvl >
2039                                     ieee->current_network.tim.tim_count)
2040                                         LPSAwakeIntvl_tmp = count +
2041                                         (pPSC->LPSAwakeIntvl - count) -
2042                                         ((pPSC->LPSAwakeIntvl-count)%period);
2043                                 else
2044                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2045                         }
2046
2047                 *time = ieee->current_network.last_dtim_sta_time
2048                         + msecs_to_jiffies(ieee->current_network.beacon_interval *
2049                         LPSAwakeIntvl_tmp);
2050         }
2051         }
2052
2053         return 1;
2054
2055
2056 }
2057
2058 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2059 {
2060         u64 time;
2061         short sleep;
2062         unsigned long flags, flags2;
2063
2064         spin_lock_irqsave(&ieee->lock, flags);
2065
2066         if ((ieee->ps == RTLLIB_PS_DISABLED ||
2067              ieee->iw_mode != IW_MODE_INFRA ||
2068              ieee->state != RTLLIB_LINKED)) {
2069                 RT_TRACE(COMP_DBG,
2070                          "=====>%s(): no need to ps,wake up!! ieee->ps is %d, ieee->iw_mode is %d, ieee->state is %d\n",
2071                          __func__, ieee->ps, ieee->iw_mode, ieee->state);
2072                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2073                 rtllib_sta_wakeup(ieee, 1);
2074
2075                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2076         }
2077         sleep = rtllib_sta_ps_sleep(ieee, &time);
2078         /* 2 wake, 1 sleep, 0 do nothing */
2079         if (sleep == 0)
2080                 goto out;
2081         if (sleep == 1) {
2082                 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2083                         ieee->enter_sleep_state(ieee->dev, time);
2084                 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2085                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2086
2087                         if (ieee->ps_is_queue_empty(ieee->dev)) {
2088                                 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2089                                 ieee->ack_tx_to_ieee = 1;
2090                                 rtllib_sta_ps_send_null_frame(ieee, 1);
2091                                 ieee->ps_time = time;
2092                         }
2093                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2094
2095                 }
2096
2097                 ieee->bAwakePktSent = false;
2098
2099         } else if (sleep == 2) {
2100                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2101
2102                 rtllib_sta_wakeup(ieee, 1);
2103
2104                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2105         }
2106
2107 out:
2108         spin_unlock_irqrestore(&ieee->lock, flags);
2109
2110 }
2111
2112 void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2113 {
2114         if (ieee->sta_sleep == LPS_IS_WAKE) {
2115                 if (nl) {
2116                         if (ieee->pHTInfo->IOTAction &
2117                             HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2118                                 ieee->ack_tx_to_ieee = 1;
2119                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2120                         } else {
2121                                 ieee->ack_tx_to_ieee = 1;
2122                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2123                         }
2124                 }
2125                 return;
2126
2127         }
2128
2129         if (ieee->sta_sleep == LPS_IS_SLEEP)
2130                 ieee->sta_wake_up(ieee->dev);
2131         if (nl) {
2132                 if (ieee->pHTInfo->IOTAction &
2133                     HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2134                         ieee->ack_tx_to_ieee = 1;
2135                         rtllib_sta_ps_send_null_frame(ieee, 0);
2136                 } else {
2137                         ieee->ack_tx_to_ieee = 1;
2138                         ieee->polling = true;
2139                         rtllib_sta_ps_send_pspoll_frame(ieee);
2140                 }
2141
2142         } else {
2143                 ieee->sta_sleep = LPS_IS_WAKE;
2144                 ieee->polling = false;
2145         }
2146 }
2147
2148 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2149 {
2150         unsigned long flags, flags2;
2151
2152         spin_lock_irqsave(&ieee->lock, flags);
2153
2154         if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2155                 /* Null frame with PS bit set */
2156                 if (success) {
2157                         ieee->sta_sleep = LPS_IS_SLEEP;
2158                         ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2159                 }
2160                 /* if the card report not success we can't be sure the AP
2161                  * has not RXed so we can't assume the AP believe us awake
2162                  */
2163         } else {/* 21112005 - tx again null without PS bit if lost */
2164
2165                 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2166                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2167                         if (ieee->pHTInfo->IOTAction &
2168                             HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2169                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2170                         else
2171                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2172                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2173                 }
2174         }
2175         spin_unlock_irqrestore(&ieee->lock, flags);
2176 }
2177 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2178
2179 static void rtllib_process_action(struct rtllib_device *ieee,
2180                                   struct sk_buff *skb)
2181 {
2182         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2183         u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2184         u8 category = 0;
2185
2186         if (act == NULL) {
2187                 netdev_warn(ieee->dev,
2188                             "Error getting payload of action frame\n");
2189                 return;
2190         }
2191
2192         category = *act;
2193         act++;
2194         switch (category) {
2195         case ACT_CAT_BA:
2196                 switch (*act) {
2197                 case ACT_ADDBAREQ:
2198                         rtllib_rx_ADDBAReq(ieee, skb);
2199                         break;
2200                 case ACT_ADDBARSP:
2201                         rtllib_rx_ADDBARsp(ieee, skb);
2202                         break;
2203                 case ACT_DELBA:
2204                         rtllib_rx_DELBA(ieee, skb);
2205                         break;
2206                 }
2207                 break;
2208         default:
2209                 break;
2210         }
2211 }
2212
2213 inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2214                                 struct rtllib_rx_stats *rx_stats)
2215 {
2216         u16 errcode;
2217         int aid;
2218         u8 *ies;
2219         struct rtllib_assoc_response_frame *assoc_resp;
2220         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2221         u16 frame_ctl = le16_to_cpu(header->frame_ctl);
2222
2223         netdev_dbg(ieee->dev, "received [RE]ASSOCIATION RESPONSE (%d)\n",
2224                    WLAN_FC_GET_STYPE(frame_ctl));
2225
2226         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2227              ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2228              (ieee->iw_mode == IW_MODE_INFRA)) {
2229                 errcode = assoc_parse(ieee, skb, &aid);
2230                 if (0 == errcode) {
2231                         struct rtllib_network *network =
2232                                  kzalloc(sizeof(struct rtllib_network),
2233                                  GFP_ATOMIC);
2234
2235                         if (!network)
2236                                 return 1;
2237                         ieee->state = RTLLIB_LINKED;
2238                         ieee->assoc_id = aid;
2239                         ieee->softmac_stats.rx_ass_ok++;
2240                         /* station support qos */
2241                         /* Let the register setting default with Legacy station */
2242                         assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2243                         if (ieee->current_network.qos_data.supported == 1) {
2244                                 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2245                                                         rx_stats->len - sizeof(*assoc_resp),
2246                                                         network, rx_stats)) {
2247                                         kfree(network);
2248                                         return 1;
2249                                 }
2250                                 memcpy(ieee->pHTInfo->PeerHTCapBuf,
2251                                        network->bssht.bdHTCapBuf,
2252                                        network->bssht.bdHTCapLen);
2253                                 memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2254                                        network->bssht.bdHTInfoBuf,
2255                                        network->bssht.bdHTInfoLen);
2256                                 if (ieee->handle_assoc_response != NULL)
2257                                         ieee->handle_assoc_response(ieee->dev,
2258                                                  (struct rtllib_assoc_response_frame *)header,
2259                                                  network);
2260                         }
2261                         kfree(network);
2262
2263                         kfree(ieee->assocresp_ies);
2264                         ieee->assocresp_ies = NULL;
2265                         ies = &(assoc_resp->info_element[0].id);
2266                         ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2267                         ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2268                                                       GFP_ATOMIC);
2269                         if (ieee->assocresp_ies)
2270                                 memcpy(ieee->assocresp_ies, ies,
2271                                        ieee->assocresp_ies_len);
2272                         else {
2273                                 netdev_info(ieee->dev,
2274                                             "%s()Warning: can't alloc memory for assocresp_ies\n",
2275                                             __func__);
2276                                 ieee->assocresp_ies_len = 0;
2277                         }
2278                         rtllib_associate_complete(ieee);
2279                 } else {
2280                         /* aid could not been allocated */
2281                         ieee->softmac_stats.rx_ass_err++;
2282                         netdev_info(ieee->dev,
2283                                     "Association response status code 0x%x\n",
2284                                     errcode);
2285                         if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2286                                 queue_delayed_work_rsl(ieee->wq,
2287                                          &ieee->associate_procedure_wq, 0);
2288                         else
2289                                 rtllib_associate_abort(ieee);
2290                 }
2291         }
2292         return 0;
2293 }
2294
2295 static void rtllib_rx_auth_resp(struct rtllib_device *ieee, struct sk_buff *skb)
2296 {
2297         u16 errcode;
2298         u8 *challenge;
2299         int chlen = 0;
2300         bool bSupportNmode = true, bHalfSupportNmode = false;
2301
2302         errcode = auth_parse(ieee->dev, skb, &challenge, &chlen);
2303
2304         if (errcode) {
2305                 ieee->softmac_stats.rx_auth_rs_err++;
2306                 netdev_info(ieee->dev,
2307                             "Authentication respose status code 0x%x", errcode);
2308                 rtllib_associate_abort(ieee);
2309                 return;
2310         }
2311
2312         if (ieee->open_wep || !challenge) {
2313                 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2314                 ieee->softmac_stats.rx_auth_rs_ok++;
2315                 if (!(ieee->pHTInfo->IOTAction & HT_IOT_ACT_PURE_N_MODE)) {
2316                         if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2317                                 if (IsHTHalfNmodeAPs(ieee)) {
2318                                         bSupportNmode = true;
2319                                         bHalfSupportNmode = true;
2320                                 } else {
2321                                         bSupportNmode = false;
2322                                         bHalfSupportNmode = false;
2323                                 }
2324                         }
2325                 }
2326                 /* Dummy wirless mode setting to avoid encryption issue */
2327                 if (bSupportNmode) {
2328                         ieee->SetWirelessMode(ieee->dev,
2329                                               ieee->current_network.mode);
2330                 } else {
2331                         /*TODO*/
2332                         ieee->SetWirelessMode(ieee->dev, IEEE_G);
2333                 }
2334
2335                 if ((ieee->current_network.mode == IEEE_N_24G) &&
2336                     bHalfSupportNmode) {
2337                         netdev_info(ieee->dev, "======>enter half N mode\n");
2338                         ieee->bHalfWirelessN24GMode = true;
2339                 } else {
2340                         ieee->bHalfWirelessN24GMode = false;
2341                 }
2342                 rtllib_associate_step2(ieee);
2343         } else {
2344                 rtllib_auth_challenge(ieee, challenge,  chlen);
2345         }
2346 }
2347
2348 inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2349                           struct rtllib_rx_stats *rx_stats)
2350 {
2351
2352         if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2353                 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2354                     (ieee->iw_mode == IW_MODE_INFRA)) {
2355                         netdev_dbg(ieee->dev,
2356                                    "Received authentication response");
2357                         rtllib_rx_auth_resp(ieee, skb);
2358                 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2359                         rtllib_rx_auth_rq(ieee, skb);
2360                 }
2361         }
2362         return 0;
2363 }
2364
2365 inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2366 {
2367         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2368         u16 frame_ctl;
2369
2370         if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2371                 return 0;
2372
2373         /* FIXME for now repeat all the association procedure
2374          * both for disassociation and deauthentication
2375          */
2376         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2377             ieee->state == RTLLIB_LINKED &&
2378             (ieee->iw_mode == IW_MODE_INFRA)) {
2379                 frame_ctl = le16_to_cpu(header->frame_ctl);
2380                 netdev_info(ieee->dev,
2381                             "==========>received disassoc/deauth(%x) frame, reason code:%x\n",
2382                             WLAN_FC_GET_STYPE(frame_ctl),
2383                             ((struct rtllib_disassoc *)skb->data)->reason);
2384                 ieee->state = RTLLIB_ASSOCIATING;
2385                 ieee->softmac_stats.reassoc++;
2386                 ieee->is_roaming = true;
2387                 ieee->LinkDetectInfo.bBusyTraffic = false;
2388                 rtllib_disassociate(ieee);
2389                 RemovePeerTS(ieee, header->addr2);
2390                 if (ieee->LedControlHandler != NULL)
2391                         ieee->LedControlHandler(ieee->dev,
2392                                                 LED_CTL_START_TO_LINK);
2393
2394                 if (!(ieee->rtllib_ap_sec_type(ieee) &
2395                     (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2396                         queue_delayed_work_rsl(ieee->wq,
2397                                        &ieee->associate_procedure_wq, 5);
2398         }
2399         return 0;
2400 }
2401
2402 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2403                                    struct sk_buff *skb,
2404                                    struct rtllib_rx_stats *rx_stats, u16 type,
2405                                    u16 stype)
2406 {
2407         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2408         u16 frame_ctl;
2409
2410         if (!ieee->proto_started)
2411                 return 0;
2412
2413         frame_ctl = le16_to_cpu(header->frame_ctl);
2414         switch (WLAN_FC_GET_STYPE(frame_ctl)) {
2415         case RTLLIB_STYPE_ASSOC_RESP:
2416         case RTLLIB_STYPE_REASSOC_RESP:
2417                 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2418                         return 1;
2419                 break;
2420         case RTLLIB_STYPE_ASSOC_REQ:
2421         case RTLLIB_STYPE_REASSOC_REQ:
2422                 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2423                      ieee->iw_mode == IW_MODE_MASTER)
2424                         rtllib_rx_assoc_rq(ieee, skb);
2425                 break;
2426         case RTLLIB_STYPE_AUTH:
2427                 rtllib_rx_auth(ieee, skb, rx_stats);
2428                 break;
2429         case RTLLIB_STYPE_DISASSOC:
2430         case RTLLIB_STYPE_DEAUTH:
2431                 rtllib_rx_deauth(ieee, skb);
2432                 break;
2433         case RTLLIB_STYPE_MANAGE_ACT:
2434                 rtllib_process_action(ieee, skb);
2435                 break;
2436         default:
2437                 return -1;
2438         }
2439         return 0;
2440 }
2441
2442 /* following are for a simpler TX queue management.
2443  * Instead of using netif_[stop/wake]_queue the driver
2444  * will use these two functions (plus a reset one), that
2445  * will internally use the kernel netif_* and takes
2446  * care of the ieee802.11 fragmentation.
2447  * So the driver receives a fragment per time and might
2448  * call the stop function when it wants to not
2449  * have enough room to TX an entire packet.
2450  * This might be useful if each fragment needs it's own
2451  * descriptor, thus just keep a total free memory > than
2452  * the max fragmentation threshold is not enough.. If the
2453  * ieee802.11 stack passed a TXB struct then you need
2454  * to keep N free descriptors where
2455  * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2456  * In this way you need just one and the 802.11 stack
2457  * will take care of buffering fragments and pass them to
2458  * to the driver later, when it wakes the queue.
2459  */
2460 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2461 {
2462
2463         unsigned int queue_index = txb->queue_index;
2464         unsigned long flags;
2465         int  i;
2466         struct cb_desc *tcb_desc = NULL;
2467         unsigned long queue_len = 0;
2468
2469         spin_lock_irqsave(&ieee->lock, flags);
2470
2471         /* called with 2nd parm 0, no tx mgmt lock required */
2472         rtllib_sta_wakeup(ieee, 0);
2473
2474         /* update the tx status */
2475         tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2476                    MAX_DEV_ADDR_SIZE);
2477         if (tcb_desc->bMulticast)
2478                 ieee->stats.multicast++;
2479
2480         /* if xmit available, just xmit it immediately, else just insert it to
2481          * the wait queue
2482          */
2483         for (i = 0; i < txb->nr_frags; i++) {
2484                 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2485                 if ((queue_len  != 0) ||
2486                     (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2487                     (ieee->queue_stop)) {
2488                         /* insert the skb packet to the wait queue
2489                          * as for the completion function, it does not need
2490                          * to check it any more.
2491                          */
2492                         if (queue_len < 200)
2493                                 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2494                                                txb->fragments[i]);
2495                         else
2496                                 kfree_skb(txb->fragments[i]);
2497                 } else {
2498                         ieee->softmac_data_hard_start_xmit(
2499                                         txb->fragments[i],
2500                                         ieee->dev, ieee->rate);
2501                 }
2502         }
2503
2504         rtllib_txb_free(txb);
2505
2506         spin_unlock_irqrestore(&ieee->lock, flags);
2507
2508 }
2509
2510 void rtllib_reset_queue(struct rtllib_device *ieee)
2511 {
2512         unsigned long flags;
2513
2514         spin_lock_irqsave(&ieee->lock, flags);
2515         init_mgmt_queue(ieee);
2516         if (ieee->tx_pending.txb) {
2517                 rtllib_txb_free(ieee->tx_pending.txb);
2518                 ieee->tx_pending.txb = NULL;
2519         }
2520         ieee->queue_stop = 0;
2521         spin_unlock_irqrestore(&ieee->lock, flags);
2522
2523 }
2524 EXPORT_SYMBOL(rtllib_reset_queue);
2525
2526 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2527 {
2528         unsigned int i;
2529
2530         for (i = 0; i < ieee->dev->num_tx_queues; i++)
2531                 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2532
2533         netif_tx_stop_all_queues(ieee->dev);
2534 }
2535
2536 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2537 {
2538         netif_tx_wake_all_queues(ieee->dev);
2539 }
2540
2541 inline void rtllib_randomize_cell(struct rtllib_device *ieee)
2542 {
2543
2544         random_ether_addr(ieee->current_network.bssid);
2545 }
2546
2547 /* called in user context only */
2548 void rtllib_start_master_bss(struct rtllib_device *ieee)
2549 {
2550         ieee->assoc_id = 1;
2551
2552         if (ieee->current_network.ssid_len == 0) {
2553                 strncpy(ieee->current_network.ssid,
2554                         RTLLIB_DEFAULT_TX_ESSID,
2555                         IW_ESSID_MAX_SIZE);
2556
2557                 ieee->current_network.ssid_len =
2558                                  strlen(RTLLIB_DEFAULT_TX_ESSID);
2559                 ieee->ssid_set = 1;
2560         }
2561
2562         ether_addr_copy(ieee->current_network.bssid, ieee->dev->dev_addr);
2563
2564         ieee->set_chan(ieee->dev, ieee->current_network.channel);
2565         ieee->state = RTLLIB_LINKED;
2566         ieee->link_change(ieee->dev);
2567         notify_wx_assoc_event(ieee);
2568
2569         if (ieee->data_hard_resume)
2570                 ieee->data_hard_resume(ieee->dev);
2571
2572         netif_carrier_on(ieee->dev);
2573 }
2574
2575 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2576 {
2577         /* reset hardware status */
2578         if (ieee->raw_tx) {
2579                 if (ieee->data_hard_resume)
2580                         ieee->data_hard_resume(ieee->dev);
2581
2582                 netif_carrier_on(ieee->dev);
2583         }
2584 }
2585
2586 static void rtllib_start_ibss_wq(void *data)
2587 {
2588         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2589                                      struct rtllib_device, start_ibss_wq);
2590         /* iwconfig mode ad-hoc will schedule this and return
2591          * on the other hand this will block further iwconfig SET
2592          * operations because of the wx_sem hold.
2593          * Anyway some most set operations set a flag to speed-up
2594          * (abort) this wq (when syncro scanning) before sleeping
2595          * on the semaphore
2596          */
2597         if (!ieee->proto_started) {
2598                 netdev_info(ieee->dev, "==========oh driver down return\n");
2599                 return;
2600         }
2601         down(&ieee->wx_sem);
2602
2603         if (ieee->current_network.ssid_len == 0) {
2604                 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2605                 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2606                 ieee->ssid_set = 1;
2607         }
2608
2609         ieee->state = RTLLIB_NOLINK;
2610         ieee->mode = IEEE_G;
2611         /* check if we have this cell in our network list */
2612         rtllib_softmac_check_all_nets(ieee);
2613
2614
2615         /* if not then the state is not linked. Maybe the user switched to
2616          * ad-hoc mode just after being in monitor mode, or just after
2617          * being very few time in managed mode (so the card have had no
2618          * time to scan all the chans..) or we have just run up the iface
2619          * after setting ad-hoc mode. So we have to give another try..
2620          * Here, in ibss mode, should be safe to do this without extra care
2621          * (in bss mode we had to make sure no-one tried to associate when
2622          * we had just checked the ieee->state and we was going to start the
2623          * scan) because in ibss mode the rtllib_new_net function, when
2624          * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2625          * so, at worst, we waste a bit of time to initiate an unneeded syncro
2626          * scan, that will stop at the first round because it sees the state
2627          * associated.
2628          */
2629         if (ieee->state == RTLLIB_NOLINK)
2630                 rtllib_start_scan_syncro(ieee, 0);
2631
2632         /* the network definitively is not here.. create a new cell */
2633         if (ieee->state == RTLLIB_NOLINK) {
2634                 netdev_info(ieee->dev, "creating new IBSS cell\n");
2635                 ieee->current_network.channel = ieee->IbssStartChnl;
2636                 if (!ieee->wap_set)
2637                         rtllib_randomize_cell(ieee);
2638
2639                 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2640
2641                         ieee->current_network.rates_len = 4;
2642
2643                         ieee->current_network.rates[0] =
2644                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2645                         ieee->current_network.rates[1] =
2646                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2647                         ieee->current_network.rates[2] =
2648                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2649                         ieee->current_network.rates[3] =
2650                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2651
2652                 } else
2653                         ieee->current_network.rates_len = 0;
2654
2655                 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2656                         ieee->current_network.rates_ex_len = 8;
2657
2658                         ieee->current_network.rates_ex[0] =
2659                                                  RTLLIB_OFDM_RATE_6MB;
2660                         ieee->current_network.rates_ex[1] =
2661                                                  RTLLIB_OFDM_RATE_9MB;
2662                         ieee->current_network.rates_ex[2] =
2663                                                  RTLLIB_OFDM_RATE_12MB;
2664                         ieee->current_network.rates_ex[3] =
2665                                                  RTLLIB_OFDM_RATE_18MB;
2666                         ieee->current_network.rates_ex[4] =
2667                                                  RTLLIB_OFDM_RATE_24MB;
2668                         ieee->current_network.rates_ex[5] =
2669                                                  RTLLIB_OFDM_RATE_36MB;
2670                         ieee->current_network.rates_ex[6] =
2671                                                  RTLLIB_OFDM_RATE_48MB;
2672                         ieee->current_network.rates_ex[7] =
2673                                                  RTLLIB_OFDM_RATE_54MB;
2674
2675                         ieee->rate = 108;
2676                 } else {
2677                         ieee->current_network.rates_ex_len = 0;
2678                         ieee->rate = 22;
2679                 }
2680
2681                 ieee->current_network.qos_data.supported = 0;
2682                 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2683                 ieee->current_network.mode = ieee->mode;
2684                 ieee->current_network.atim_window = 0;
2685                 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2686         }
2687
2688         netdev_info(ieee->dev, "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2689         if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2690                 HTUseDefaultSetting(ieee);
2691         else
2692                 ieee->pHTInfo->bCurrentHTSupport = false;
2693
2694         ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2695                               (u8 *)(&ieee->state));
2696
2697         ieee->state = RTLLIB_LINKED;
2698         ieee->link_change(ieee->dev);
2699
2700         HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2701         if (ieee->LedControlHandler != NULL)
2702                 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2703
2704         rtllib_start_send_beacons(ieee);
2705
2706         notify_wx_assoc_event(ieee);
2707
2708         if (ieee->data_hard_resume)
2709                 ieee->data_hard_resume(ieee->dev);
2710
2711         netif_carrier_on(ieee->dev);
2712
2713         up(&ieee->wx_sem);
2714 }
2715
2716 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2717 {
2718         queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq,
2719                                msecs_to_jiffies(150));
2720 }
2721
2722 /* this is called only in user context, with wx_sem held */
2723 void rtllib_start_bss(struct rtllib_device *ieee)
2724 {
2725         unsigned long flags;
2726
2727         if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2728                 if (!ieee->bGlobalDomain)
2729                         return;
2730         }
2731         /* check if we have already found the net we
2732          * are interested in (if any).
2733          * if not (we are disassociated and we are not
2734          * in associating / authenticating phase) start the background scanning.
2735          */
2736         rtllib_softmac_check_all_nets(ieee);
2737
2738         /* ensure no-one start an associating process (thus setting
2739          * the ieee->state to rtllib_ASSOCIATING) while we
2740          * have just checked it and we are going to enable scan.
2741          * The rtllib_new_net function is always called with
2742          * lock held (from both rtllib_softmac_check_all_nets and
2743          * the rx path), so we cannot be in the middle of such function
2744          */
2745         spin_lock_irqsave(&ieee->lock, flags);
2746
2747         if (ieee->state == RTLLIB_NOLINK)
2748                 rtllib_start_scan(ieee);
2749         spin_unlock_irqrestore(&ieee->lock, flags);
2750 }
2751
2752 static void rtllib_link_change_wq(void *data)
2753 {
2754         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2755                                      struct rtllib_device, link_change_wq);
2756         ieee->link_change(ieee->dev);
2757 }
2758 /* called only in userspace context */
2759 void rtllib_disassociate(struct rtllib_device *ieee)
2760 {
2761         netif_carrier_off(ieee->dev);
2762         if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2763                         rtllib_reset_queue(ieee);
2764
2765         if (ieee->data_hard_stop)
2766                         ieee->data_hard_stop(ieee->dev);
2767         if (IS_DOT11D_ENABLE(ieee))
2768                 Dot11d_Reset(ieee);
2769         ieee->state = RTLLIB_NOLINK;
2770         ieee->is_set_key = false;
2771         ieee->wap_set = 0;
2772
2773         queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0);
2774
2775         notify_wx_assoc_event(ieee);
2776 }
2777
2778 static void rtllib_associate_retry_wq(void *data)
2779 {
2780         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2781                                      struct rtllib_device, associate_retry_wq);
2782         unsigned long flags;
2783
2784         down(&ieee->wx_sem);
2785         if (!ieee->proto_started)
2786                 goto exit;
2787
2788         if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2789                 goto exit;
2790
2791         /* until we do not set the state to RTLLIB_NOLINK
2792          * there are no possibility to have someone else trying
2793          * to start an association procedure (we get here with
2794          * ieee->state = RTLLIB_ASSOCIATING).
2795          * When we set the state to RTLLIB_NOLINK it is possible
2796          * that the RX path run an attempt to associate, but
2797          * both rtllib_softmac_check_all_nets and the
2798          * RX path works with ieee->lock held so there are no
2799          * problems. If we are still disassociated then start a scan.
2800          * the lock here is necessary to ensure no one try to start
2801          * an association procedure when we have just checked the
2802          * state and we are going to start the scan.
2803          */
2804         ieee->beinretry = true;
2805         ieee->state = RTLLIB_NOLINK;
2806
2807         rtllib_softmac_check_all_nets(ieee);
2808
2809         spin_lock_irqsave(&ieee->lock, flags);
2810
2811         if (ieee->state == RTLLIB_NOLINK)
2812                 rtllib_start_scan(ieee);
2813         spin_unlock_irqrestore(&ieee->lock, flags);
2814
2815         ieee->beinretry = false;
2816 exit:
2817         up(&ieee->wx_sem);
2818 }
2819
2820 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2821 {
2822         const u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2823
2824         struct sk_buff *skb;
2825         struct rtllib_probe_response *b;
2826
2827         skb = rtllib_probe_resp(ieee, broadcast_addr);
2828
2829         if (!skb)
2830                 return NULL;
2831
2832         b = (struct rtllib_probe_response *) skb->data;
2833         b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2834
2835         return skb;
2836
2837 }
2838
2839 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2840 {
2841         struct sk_buff *skb;
2842         struct rtllib_probe_response *b;
2843
2844         skb = rtllib_get_beacon_(ieee);
2845         if (!skb)
2846                 return NULL;
2847
2848         b = (struct rtllib_probe_response *) skb->data;
2849         b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2850
2851         if (ieee->seq_ctrl[0] == 0xFFF)
2852                 ieee->seq_ctrl[0] = 0;
2853         else
2854                 ieee->seq_ctrl[0]++;
2855
2856         return skb;
2857 }
2858 EXPORT_SYMBOL(rtllib_get_beacon);
2859
2860 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2861                                   u8 shutdown)
2862 {
2863         rtllib_stop_scan_syncro(ieee);
2864         down(&ieee->wx_sem);
2865         rtllib_stop_protocol(ieee, shutdown);
2866         up(&ieee->wx_sem);
2867 }
2868 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2869
2870
2871 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2872 {
2873         if (!ieee->proto_started)
2874                 return;
2875
2876         if (shutdown) {
2877                 ieee->proto_started = 0;
2878                 ieee->proto_stoppping = 1;
2879                 if (ieee->rtllib_ips_leave != NULL)
2880                         ieee->rtllib_ips_leave(ieee->dev);
2881         }
2882
2883         rtllib_stop_send_beacons(ieee);
2884         del_timer_sync(&ieee->associate_timer);
2885         cancel_delayed_work(&ieee->associate_retry_wq);
2886         cancel_delayed_work(&ieee->start_ibss_wq);
2887         cancel_delayed_work(&ieee->link_change_wq);
2888         rtllib_stop_scan(ieee);
2889
2890         if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2891                 ieee->state = RTLLIB_NOLINK;
2892
2893         if (ieee->state == RTLLIB_LINKED) {
2894                 if (ieee->iw_mode == IW_MODE_INFRA)
2895                         SendDisassociation(ieee, 1, WLAN_REASON_DEAUTH_LEAVING);
2896                 rtllib_disassociate(ieee);
2897         }
2898
2899         if (shutdown) {
2900                 RemoveAllTS(ieee);
2901                 ieee->proto_stoppping = 0;
2902         }
2903         kfree(ieee->assocreq_ies);
2904         ieee->assocreq_ies = NULL;
2905         ieee->assocreq_ies_len = 0;
2906         kfree(ieee->assocresp_ies);
2907         ieee->assocresp_ies = NULL;
2908         ieee->assocresp_ies_len = 0;
2909 }
2910
2911 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2912 {
2913         down(&ieee->wx_sem);
2914         rtllib_start_protocol(ieee);
2915         up(&ieee->wx_sem);
2916 }
2917 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
2918
2919 void rtllib_start_protocol(struct rtllib_device *ieee)
2920 {
2921         short ch = 0;
2922         int i = 0;
2923
2924         rtllib_update_active_chan_map(ieee);
2925
2926         if (ieee->proto_started)
2927                 return;
2928
2929         ieee->proto_started = 1;
2930
2931         if (ieee->current_network.channel == 0) {
2932                 do {
2933                         ch++;
2934                         if (ch > MAX_CHANNEL_NUMBER)
2935                                 return; /* no channel found */
2936                 } while (!ieee->active_channel_map[ch]);
2937                 ieee->current_network.channel = ch;
2938         }
2939
2940         if (ieee->current_network.beacon_interval == 0)
2941                 ieee->current_network.beacon_interval = 100;
2942
2943         for (i = 0; i < 17; i++) {
2944                 ieee->last_rxseq_num[i] = -1;
2945                 ieee->last_rxfrag_num[i] = -1;
2946                 ieee->last_packet_time[i] = 0;
2947         }
2948
2949         if (ieee->UpdateBeaconInterruptHandler)
2950                 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
2951
2952         ieee->wmm_acm = 0;
2953         /* if the user set the MAC of the ad-hoc cell and then
2954          * switch to managed mode, shall we  make sure that association
2955          * attempts does not fail just because the user provide the essid
2956          * and the nic is still checking for the AP MAC ??
2957          */
2958         if (ieee->iw_mode == IW_MODE_INFRA) {
2959                 rtllib_start_bss(ieee);
2960         } else if (ieee->iw_mode == IW_MODE_ADHOC) {
2961                 if (ieee->UpdateBeaconInterruptHandler)
2962                         ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
2963
2964                 rtllib_start_ibss(ieee);
2965
2966         } else if (ieee->iw_mode == IW_MODE_MASTER) {
2967                 rtllib_start_master_bss(ieee);
2968         } else if (ieee->iw_mode == IW_MODE_MONITOR) {
2969                 rtllib_start_monitor_mode(ieee);
2970         }
2971 }
2972
2973 void rtllib_softmac_init(struct rtllib_device *ieee)
2974 {
2975         int i;
2976
2977         memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
2978
2979         ieee->state = RTLLIB_NOLINK;
2980         for (i = 0; i < 5; i++)
2981                 ieee->seq_ctrl[i] = 0;
2982         ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
2983         if (!ieee->pDot11dInfo)
2984                 netdev_err(ieee->dev, "Can't alloc memory for DOT11D\n");
2985         ieee->LinkDetectInfo.SlotIndex = 0;
2986         ieee->LinkDetectInfo.SlotNum = 2;
2987         ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
2988         ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
2989         ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
2990         ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
2991         ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
2992         ieee->bIsAggregateFrame = false;
2993         ieee->assoc_id = 0;
2994         ieee->queue_stop = 0;
2995         ieee->scanning_continue = 0;
2996         ieee->softmac_features = 0;
2997         ieee->wap_set = 0;
2998         ieee->ssid_set = 0;
2999         ieee->proto_started = 0;
3000         ieee->proto_stoppping = 0;
3001         ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
3002         ieee->rate = 22;
3003         ieee->ps = RTLLIB_PS_DISABLED;
3004         ieee->sta_sleep = LPS_IS_WAKE;
3005
3006         ieee->Regdot11HTOperationalRateSet[0] = 0xff;
3007         ieee->Regdot11HTOperationalRateSet[1] = 0xff;
3008         ieee->Regdot11HTOperationalRateSet[4] = 0x01;
3009
3010         ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3011         ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3012         ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3013
3014         ieee->FirstIe_InScan = false;
3015         ieee->actscanning = false;
3016         ieee->beinretry = false;
3017         ieee->is_set_key = false;
3018         init_mgmt_queue(ieee);
3019
3020         ieee->aggregation = true;
3021         ieee->tx_pending.txb = NULL;
3022
3023         _setup_timer(&ieee->associate_timer,
3024                     rtllib_associate_abort_cb,
3025                     (unsigned long) ieee);
3026
3027         _setup_timer(&ieee->beacon_timer,
3028                     rtllib_send_beacon_cb,
3029                     (unsigned long) ieee);
3030
3031
3032         ieee->wq = create_workqueue(DRV_NAME);
3033
3034         INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3035                               (void *)rtllib_link_change_wq, ieee);
3036         INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3037                               (void *)rtllib_start_ibss_wq, ieee);
3038         INIT_WORK_RSL(&ieee->associate_complete_wq,
3039                       (void *)rtllib_associate_complete_wq, ieee);
3040         INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3041                               (void *)rtllib_associate_procedure_wq, ieee);
3042         INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3043                               (void *)rtllib_softmac_scan_wq, ieee);
3044         INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3045                               (void *)rtllib_associate_retry_wq, ieee);
3046         INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3047                       ieee);
3048
3049         sema_init(&ieee->wx_sem, 1);
3050         sema_init(&ieee->scan_sem, 1);
3051         sema_init(&ieee->ips_sem, 1);
3052
3053         spin_lock_init(&ieee->mgmt_tx_lock);
3054         spin_lock_init(&ieee->beacon_lock);
3055
3056         tasklet_init(&ieee->ps_task,
3057              (void(*)(unsigned long)) rtllib_sta_ps,
3058              (unsigned long)ieee);
3059
3060 }
3061
3062 void rtllib_softmac_free(struct rtllib_device *ieee)
3063 {
3064         down(&ieee->wx_sem);
3065         kfree(ieee->pDot11dInfo);
3066         ieee->pDot11dInfo = NULL;
3067         del_timer_sync(&ieee->associate_timer);
3068
3069         cancel_delayed_work(&ieee->associate_retry_wq);
3070         destroy_workqueue(ieee->wq);
3071         up(&ieee->wx_sem);
3072         tasklet_kill(&ieee->ps_task);
3073 }
3074
3075 /********************************************************
3076  * Start of WPA code.                                   *
3077  * this is stolen from the ipw2200 driver               *
3078  ********************************************************/
3079
3080
3081 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3082 {
3083         /* This is called when wpa_supplicant loads and closes the driver
3084          * interface.
3085          */
3086         netdev_info(ieee->dev, "%s WPA\n", value ? "enabling" : "disabling");
3087         ieee->wpa_enabled = value;
3088         memset(ieee->ap_mac_addr, 0, 6);
3089         return 0;
3090 }
3091
3092
3093 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3094                                    int wpa_ie_len)
3095 {
3096         /* make sure WPA is enabled */
3097         rtllib_wpa_enable(ieee, 1);
3098
3099         rtllib_disassociate(ieee);
3100 }
3101
3102
3103 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3104 {
3105
3106         int ret = 0;
3107
3108         switch (command) {
3109         case IEEE_MLME_STA_DEAUTH:
3110                 break;
3111
3112         case IEEE_MLME_STA_DISASSOC:
3113                 rtllib_disassociate(ieee);
3114                 break;
3115
3116         default:
3117                 netdev_info(ieee->dev, "Unknown MLME request: %d\n", command);
3118                 ret = -EOPNOTSUPP;
3119         }
3120
3121         return ret;
3122 }
3123
3124
3125 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3126                               struct ieee_param *param, int plen)
3127 {
3128         u8 *buf;
3129
3130         if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3131             (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3132                 return -EINVAL;
3133
3134         if (param->u.wpa_ie.len) {
3135                 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
3136                               GFP_KERNEL);
3137                 if (buf == NULL)
3138                         return -ENOMEM;
3139
3140                 kfree(ieee->wpa_ie);
3141                 ieee->wpa_ie = buf;
3142                 ieee->wpa_ie_len = param->u.wpa_ie.len;
3143         } else {
3144                 kfree(ieee->wpa_ie);
3145                 ieee->wpa_ie = NULL;
3146                 ieee->wpa_ie_len = 0;
3147         }
3148
3149         rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3150         return 0;
3151 }
3152
3153 #define AUTH_ALG_OPEN_SYSTEM                    0x1
3154 #define AUTH_ALG_SHARED_KEY                     0x2
3155 #define AUTH_ALG_LEAP                           0x4
3156 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3157 {
3158
3159         struct rtllib_security sec = {
3160                 .flags = SEC_AUTH_MODE,
3161         };
3162
3163         if (value & AUTH_ALG_SHARED_KEY) {
3164                 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3165                 ieee->open_wep = 0;
3166                 ieee->auth_mode = 1;
3167         } else if (value & AUTH_ALG_OPEN_SYSTEM) {
3168                 sec.auth_mode = WLAN_AUTH_OPEN;
3169                 ieee->open_wep = 1;
3170                 ieee->auth_mode = 0;
3171         } else if (value & AUTH_ALG_LEAP) {
3172                 sec.auth_mode = WLAN_AUTH_LEAP  >> 6;
3173                 ieee->open_wep = 1;
3174                 ieee->auth_mode = 2;
3175         }
3176
3177
3178         if (ieee->set_security)
3179                 ieee->set_security(ieee->dev, &sec);
3180
3181         return 0;
3182 }
3183
3184 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3185 {
3186         int ret = 0;
3187         unsigned long flags;
3188
3189         switch (name) {
3190         case IEEE_PARAM_WPA_ENABLED:
3191                 ret = rtllib_wpa_enable(ieee, value);
3192                 break;
3193
3194         case IEEE_PARAM_TKIP_COUNTERMEASURES:
3195                 ieee->tkip_countermeasures = value;
3196                 break;
3197
3198         case IEEE_PARAM_DROP_UNENCRYPTED:
3199         {
3200                 /* HACK:
3201                  *
3202                  * wpa_supplicant calls set_wpa_enabled when the driver
3203                  * is loaded and unloaded, regardless of if WPA is being
3204                  * used.  No other calls are made which can be used to
3205                  * determine if encryption will be used or not prior to
3206                  * association being expected.  If encryption is not being
3207                  * used, drop_unencrypted is set to false, else true -- we
3208                  * can use this to determine if the CAP_PRIVACY_ON bit should
3209                  * be set.
3210                  */
3211                 struct rtllib_security sec = {
3212                         .flags = SEC_ENABLED,
3213                         .enabled = value,
3214                 };
3215                 ieee->drop_unencrypted = value;
3216                 /* We only change SEC_LEVEL for open mode. Others
3217                  * are set by ipw_wpa_set_encryption.
3218                  */
3219                 if (!value) {
3220                         sec.flags |= SEC_LEVEL;
3221                         sec.level = SEC_LEVEL_0;
3222                 } else {
3223                         sec.flags |= SEC_LEVEL;
3224                         sec.level = SEC_LEVEL_1;
3225                 }
3226                 if (ieee->set_security)
3227                         ieee->set_security(ieee->dev, &sec);
3228                 break;
3229         }
3230
3231         case IEEE_PARAM_PRIVACY_INVOKED:
3232                 ieee->privacy_invoked = value;
3233                 break;
3234
3235         case IEEE_PARAM_AUTH_ALGS:
3236                 ret = rtllib_wpa_set_auth_algs(ieee, value);
3237                 break;
3238
3239         case IEEE_PARAM_IEEE_802_1X:
3240                 ieee->ieee802_1x = value;
3241                 break;
3242         case IEEE_PARAM_WPAX_SELECT:
3243                 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3244                 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3245                 break;
3246
3247         default:
3248                 netdev_info(ieee->dev, "Unknown WPA param: %d\n", name);
3249                 ret = -EOPNOTSUPP;
3250         }
3251
3252         return ret;
3253 }
3254
3255 /* implementation borrowed from hostap driver */
3256 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3257                                   struct ieee_param *param, int param_len,
3258                                   u8 is_mesh)
3259 {
3260         int ret = 0;
3261         struct lib80211_crypto_ops *ops;
3262         struct lib80211_crypt_data **crypt;
3263
3264         struct rtllib_security sec = {
3265                 .flags = 0,
3266         };
3267
3268         param->u.crypt.err = 0;
3269         param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3270
3271         if (param_len !=
3272             (int) ((char *) param->u.crypt.key - (char *) param) +
3273             param->u.crypt.key_len) {
3274                 netdev_info(ieee->dev, "Len mismatch %d, %d\n", param_len,
3275                             param->u.crypt.key_len);
3276                 return -EINVAL;
3277         }
3278         if (is_broadcast_ether_addr(param->sta_addr)) {
3279                 if (param->u.crypt.idx >= NUM_WEP_KEYS)
3280                         return -EINVAL;
3281                 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
3282         } else {
3283                 return -EINVAL;
3284         }
3285
3286         if (strcmp(param->u.crypt.alg, "none") == 0) {
3287                 if (crypt) {
3288                         sec.enabled = 0;
3289                         sec.level = SEC_LEVEL_0;
3290                         sec.flags |= SEC_ENABLED | SEC_LEVEL;
3291                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3292                 }
3293                 goto done;
3294         }
3295         sec.enabled = 1;
3296         sec.flags |= SEC_ENABLED;
3297
3298         /* IPW HW cannot build TKIP MIC, host decryption still needed. */
3299         if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3300             strcmp(param->u.crypt.alg, "R-TKIP"))
3301                 goto skip_host_crypt;
3302
3303         ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3304         if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3305                 request_module("rtllib_crypt_wep");
3306                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3307         } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3308                 request_module("rtllib_crypt_tkip");
3309                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3310         } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3311                 request_module("rtllib_crypt_ccmp");
3312                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3313         }
3314         if (ops == NULL) {
3315                 netdev_info(ieee->dev, "unknown crypto alg '%s'\n",
3316                             param->u.crypt.alg);
3317                 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3318                 ret = -EINVAL;
3319                 goto done;
3320         }
3321         if (*crypt == NULL || (*crypt)->ops != ops) {
3322                 struct lib80211_crypt_data *new_crypt;
3323
3324                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3325
3326                 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
3327                 if (new_crypt == NULL) {
3328                         ret = -ENOMEM;
3329                         goto done;
3330                 }
3331                 new_crypt->ops = ops;
3332                 if (new_crypt->ops)
3333                         new_crypt->priv =
3334                                 new_crypt->ops->init(param->u.crypt.idx);
3335
3336                 if (new_crypt->priv == NULL) {
3337                         kfree(new_crypt);
3338                         param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3339                         ret = -EINVAL;
3340                         goto done;
3341                 }
3342
3343                 *crypt = new_crypt;
3344         }
3345
3346         if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3347             (*crypt)->ops->set_key(param->u.crypt.key,
3348             param->u.crypt.key_len, param->u.crypt.seq,
3349             (*crypt)->priv) < 0) {
3350                 netdev_info(ieee->dev, "key setting failed\n");
3351                 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3352                 ret = -EINVAL;
3353                 goto done;
3354         }
3355
3356  skip_host_crypt:
3357         if (param->u.crypt.set_tx) {
3358                 ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
3359                 sec.active_key = param->u.crypt.idx;
3360                 sec.flags |= SEC_ACTIVE_KEY;
3361         } else
3362                 sec.flags &= ~SEC_ACTIVE_KEY;
3363
3364         if (param->u.crypt.alg != NULL) {
3365                 memcpy(sec.keys[param->u.crypt.idx],
3366                        param->u.crypt.key,
3367                        param->u.crypt.key_len);
3368                 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3369                 sec.flags |= (1 << param->u.crypt.idx);
3370
3371                 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3372                         sec.flags |= SEC_LEVEL;
3373                         sec.level = SEC_LEVEL_1;
3374                 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3375                         sec.flags |= SEC_LEVEL;
3376                         sec.level = SEC_LEVEL_2;
3377                 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3378                         sec.flags |= SEC_LEVEL;
3379                         sec.level = SEC_LEVEL_3;
3380                 }
3381         }
3382  done:
3383         if (ieee->set_security)
3384                 ieee->set_security(ieee->dev, &sec);
3385
3386         /* Do not reset port if card is in Managed mode since resetting will
3387          * generate new IEEE 802.11 authentication which may end up in looping
3388          * with IEEE 802.1X.  If your hardware requires a reset after WEP
3389          * configuration (for example... Prism2), implement the reset_port in
3390          * the callbacks structures used to initialize the 802.11 stack.
3391          */
3392         if (ieee->reset_on_keychange &&
3393             ieee->iw_mode != IW_MODE_INFRA &&
3394             ieee->reset_port &&
3395             ieee->reset_port(ieee->dev)) {
3396                 netdev_info(ieee->dev, "reset_port failed\n");
3397                 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3398                 return -EINVAL;
3399         }
3400
3401         return ret;
3402 }
3403
3404 inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon,
3405                 struct rtllib_device *ieee, u16 asRsn)
3406 {
3407         struct sk_buff *skb;
3408         struct rtllib_disauth *disauth;
3409         int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3410
3411         skb = dev_alloc_skb(len);
3412         if (!skb)
3413                 return NULL;
3414
3415         skb_reserve(skb, ieee->tx_headroom);
3416
3417         disauth = (struct rtllib_disauth *) skb_put(skb,
3418                   sizeof(struct rtllib_disauth));
3419         disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3420         disauth->header.duration_id = 0;
3421
3422         ether_addr_copy(disauth->header.addr1, beacon->bssid);
3423         ether_addr_copy(disauth->header.addr2, ieee->dev->dev_addr);
3424         ether_addr_copy(disauth->header.addr3, beacon->bssid);
3425
3426         disauth->reason = cpu_to_le16(asRsn);
3427         return skb;
3428 }
3429
3430 inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon,
3431                 struct rtllib_device *ieee, u16 asRsn)
3432 {
3433         struct sk_buff *skb;
3434         struct rtllib_disassoc *disass;
3435         int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3436
3437         skb = dev_alloc_skb(len);
3438
3439         if (!skb)
3440                 return NULL;
3441
3442         skb_reserve(skb, ieee->tx_headroom);
3443
3444         disass = (struct rtllib_disassoc *) skb_put(skb,
3445                                          sizeof(struct rtllib_disassoc));
3446         disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3447         disass->header.duration_id = 0;
3448
3449         ether_addr_copy(disass->header.addr1, beacon->bssid);
3450         ether_addr_copy(disass->header.addr2, ieee->dev->dev_addr);
3451         ether_addr_copy(disass->header.addr3, beacon->bssid);
3452
3453         disass->reason = cpu_to_le16(asRsn);
3454         return skb;
3455 }
3456
3457 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3458 {
3459         struct rtllib_network *beacon = &ieee->current_network;
3460         struct sk_buff *skb;
3461
3462         if (deauth)
3463                 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3464         else
3465                 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3466
3467         if (skb)
3468                 softmac_mgmt_xmit(skb, ieee);
3469 }
3470
3471 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3472 {
3473         static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3474         static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3475         int wpa_ie_len = ieee->wpa_ie_len;
3476         struct lib80211_crypt_data *crypt;
3477         int encrypt;
3478
3479         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3480         encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3481                   || (ieee->host_encrypt && crypt && crypt->ops &&
3482                   (0 == strcmp(crypt->ops->name, "R-WEP")));
3483
3484         /* simply judge  */
3485         if (encrypt && (wpa_ie_len == 0)) {
3486                 return SEC_ALG_WEP;
3487         } else if ((wpa_ie_len != 0)) {
3488                 if (((ieee->wpa_ie[0] == 0xdd) &&
3489                     (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3490                     ((ieee->wpa_ie[0] == 0x30) &&
3491                     (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3492                         return SEC_ALG_CCMP;
3493                 else
3494                         return SEC_ALG_TKIP;
3495         } else {
3496                 return SEC_ALG_NONE;
3497         }
3498 }
3499
3500 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3501                                 u8 is_mesh)
3502 {
3503         struct ieee_param *param;
3504         int ret = 0;
3505
3506         down(&ieee->wx_sem);
3507
3508         if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3509                 ret = -EINVAL;
3510                 goto out;
3511         }
3512
3513         param = memdup_user(p->pointer, p->length);
3514         if (IS_ERR(param)) {
3515                 ret = PTR_ERR(param);
3516                 goto out;
3517         }
3518
3519         switch (param->cmd) {
3520         case IEEE_CMD_SET_WPA_PARAM:
3521                 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3522                                         param->u.wpa_param.value);
3523                 break;
3524
3525         case IEEE_CMD_SET_WPA_IE:
3526                 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3527                 break;
3528
3529         case IEEE_CMD_SET_ENCRYPTION:
3530                 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3531                 break;
3532
3533         case IEEE_CMD_MLME:
3534                 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3535                                    param->u.mlme.reason_code);
3536                 break;
3537
3538         default:
3539                 netdev_info(ieee->dev, "Unknown WPA supplicant request: %d\n",
3540                             param->cmd);
3541                 ret = -EOPNOTSUPP;
3542                 break;
3543         }
3544
3545         if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3546                 ret = -EFAULT;
3547
3548         kfree(param);
3549 out:
3550         up(&ieee->wx_sem);
3551
3552         return ret;
3553 }
3554 EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
3555
3556 static void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3557 {
3558         u8      OpMode;
3559         u8      i;
3560         bool    bFilterOutNonAssociatedBSSID = false;
3561
3562         rtllib->state = RTLLIB_NOLINK;
3563
3564         for (i = 0; i < 6; i++)
3565                 rtllib->current_network.bssid[i] = 0x55;
3566
3567         rtllib->OpMode = RT_OP_MODE_NO_LINK;
3568         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3569                                 rtllib->current_network.bssid);
3570         OpMode = RT_OP_MODE_NO_LINK;
3571         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3572         rtllib_stop_send_beacons(rtllib);
3573
3574         bFilterOutNonAssociatedBSSID = false;
3575         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3576                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3577         notify_wx_assoc_event(rtllib);
3578
3579 }
3580
3581 static void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib,
3582                                            u8 *asSta, u8 asRsn)
3583 {
3584         u8 i;
3585         u8      OpMode;
3586
3587         RemovePeerTS(rtllib, asSta);
3588
3589         if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) {
3590                 rtllib->state = RTLLIB_NOLINK;
3591
3592                 for (i = 0; i < 6; i++)
3593                         rtllib->current_network.bssid[i] = 0x22;
3594                 OpMode = RT_OP_MODE_NO_LINK;
3595                 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3596                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3597                                         (u8 *)(&OpMode));
3598                 rtllib_disassociate(rtllib);
3599
3600                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3601                                         rtllib->current_network.bssid);
3602
3603         }
3604
3605 }
3606
3607 static void
3608 rtllib_MgntDisconnectAP(
3609         struct rtllib_device *rtllib,
3610         u8 asRsn
3611 )
3612 {
3613         bool bFilterOutNonAssociatedBSSID = false;
3614
3615         bFilterOutNonAssociatedBSSID = false;
3616         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3617                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3618         rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3619                                        asRsn);
3620
3621         rtllib->state = RTLLIB_NOLINK;
3622 }
3623
3624 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3625 {
3626         if (rtllib->ps != RTLLIB_PS_DISABLED)
3627                 rtllib->sta_wake_up(rtllib->dev);
3628
3629         if (rtllib->state == RTLLIB_LINKED) {
3630                 if (rtllib->iw_mode == IW_MODE_ADHOC)
3631                         rtllib_MgntDisconnectIBSS(rtllib);
3632                 if (rtllib->iw_mode == IW_MODE_INFRA)
3633                         rtllib_MgntDisconnectAP(rtllib, asRsn);
3634
3635         }
3636
3637         return true;
3638 }
3639 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3640
3641 void notify_wx_assoc_event(struct rtllib_device *ieee)
3642 {
3643         union iwreq_data wrqu;
3644
3645         if (ieee->cannot_notify)
3646                 return;
3647
3648         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3649         if (ieee->state == RTLLIB_LINKED)
3650                 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3651                        ETH_ALEN);
3652         else {
3653
3654                 netdev_info(ieee->dev, "%s(): Tell user space disconnected\n",
3655                             __func__);
3656                 eth_zero_addr(wrqu.ap_addr.sa_data);
3657         }
3658         wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3659 }
3660 EXPORT_SYMBOL(notify_wx_assoc_event);