drivers/staging/rtl8192e/rtllib_softmac.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* IEEE 802.11 SoftMAC layer
   3  * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com>
   4  *
   5  * Mostly extracted from the rtl8180-sa2400 driver for the
   6  * in-kernel generic ieee802.11 stack.
   7  *
   8  * Few lines might be stolen from other part of the rtllib
   9  * stack. Copyright who own it's copyright
  10  *
  11  * WPA code stolen from the ipw2200 driver.
  12  * Copyright who own it's copyright.
  13  */
  14 #include "rtllib.h"
  15
  16 #include <linux/random.h>
  17 #include <linux/delay.h>
  18 #include <linux/uaccess.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/ieee80211.h>
  21 #include "dot11d.h"
  22
  23 static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl);
  24
  25
  26 static 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 static 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 static inline void
 277 softmac_ps_mgmt_xmit(struct sk_buff *skb,
 278                      struct rtllib_device *ieee)
 279 {
 280         short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
 281         struct rtllib_hdr_3addr  *header =
 282                 (struct rtllib_hdr_3addr  *) skb->data;
 283         u16 fc, type, stype;
 284         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
 285
 286         fc = le16_to_cpu(header->frame_ctl);
 287         type = WLAN_FC_GET_TYPE(fc);
 288         stype = WLAN_FC_GET_STYPE(fc);
 289
 290
 291         if (stype != RTLLIB_STYPE_PSPOLL)
 292                 tcb_desc->queue_index = MGNT_QUEUE;
 293         else
 294                 tcb_desc->queue_index = HIGH_QUEUE;
 295
 296         if (ieee->disable_mgnt_queue)
 297                 tcb_desc->queue_index = HIGH_QUEUE;
 298
 299
 300         tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
 301         tcb_desc->RATRIndex = 7;
 302         tcb_desc->bTxDisableRateFallBack = 1;
 303         tcb_desc->bTxUseDriverAssingedRate = 1;
 304         if (single) {
 305                 if (type != RTLLIB_FTYPE_CTL) {
 306                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 307
 308                         if (ieee->seq_ctrl[0] == 0xFFF)
 309                                 ieee->seq_ctrl[0] = 0;
 310                         else
 311                                 ieee->seq_ctrl[0]++;
 312
 313                 }
 314                 /* avoid watchdog triggers */
 315                 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
 316                                                    ieee->basic_rate);
 317
 318         } else {
 319                 if (type != RTLLIB_FTYPE_CTL) {
 320                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 321
 322                         if (ieee->seq_ctrl[0] == 0xFFF)
 323                                 ieee->seq_ctrl[0] = 0;
 324                         else
 325                                 ieee->seq_ctrl[0]++;
 326                 }
 327                 ieee->softmac_hard_start_xmit(skb, ieee->dev);
 328
 329         }
 330 }
 331
 332 static inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
 333 {
 334         unsigned int len, rate_len;
 335         u8 *tag;
 336         struct sk_buff *skb;
 337         struct rtllib_probe_request *req;
 338
 339         len = ieee->current_network.ssid_len;
 340
 341         rate_len = rtllib_MFIE_rate_len(ieee);
 342
 343         skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
 344                             2 + len + rate_len + ieee->tx_headroom);
 345
 346         if (!skb)
 347                 return NULL;
 348
 349         skb_reserve(skb, ieee->tx_headroom);
 350
 351         req = skb_put(skb, 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         eth_broadcast_addr(req->header.addr1);
 356         ether_addr_copy(req->header.addr2, ieee->dev->dev_addr);
 357         eth_broadcast_addr(req->header.addr3);
 358
 359         tag = 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 static 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(struct timer_list *t)
 394 {
 395         struct rtllib_device *ieee =
 396                 from_timer(ieee, t, beacon_timer);
 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 static 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 static 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 static 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         mutex_lock(&ieee->scan_mutex);
 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_scan_complete(ieee);
 565         }
 566         mutex_unlock(&ieee->scan_mutex);
 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         mutex_lock(&ieee->scan_mutex);
 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         schedule_delayed_work(&ieee->softmac_scan_wq,
 616                               msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME));
 617
 618         mutex_unlock(&ieee->scan_mutex);
 619         return;
 620
 621 out:
 622         if (IS_DOT11D_ENABLE(ieee))
 623                 dot11d_scan_complete(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         mutex_unlock(&ieee->scan_mutex);
 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         mutex_lock(&ieee->scan_mutex);
 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_sync(&ieee->softmac_scan_wq);
 690         }
 691
 692         mutex_unlock(&ieee->scan_mutex);
 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         if (ieee->rtllib_ips_leave_wq != NULL)
 734                 ieee->rtllib_ips_leave_wq(ieee->dev);
 735
 736         if (IS_DOT11D_ENABLE(ieee)) {
 737                 if (IS_COUNTRY_IE_VALID(ieee))
 738                         RESET_CIE_WATCHDOG(ieee);
 739         }
 740         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 741                 if (ieee->scanning_continue == 0) {
 742                         ieee->actscanning = true;
 743                         ieee->scanning_continue = 1;
 744                         schedule_delayed_work(&ieee->softmac_scan_wq, 0);
 745                 }
 746         } else {
 747                 if (ieee->rtllib_start_hw_scan)
 748                         ieee->rtllib_start_hw_scan(ieee->dev);
 749         }
 750 }
 751
 752 /* called with wx_mutex held */
 753 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
 754 {
 755         if (IS_DOT11D_ENABLE(ieee)) {
 756                 if (IS_COUNTRY_IE_VALID(ieee))
 757                         RESET_CIE_WATCHDOG(ieee);
 758         }
 759         ieee->sync_scan_hurryup = 0;
 760         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 761                 rtllib_softmac_scan_syncro(ieee, is_mesh);
 762         } else {
 763                 if (ieee->rtllib_start_hw_scan)
 764                         ieee->rtllib_start_hw_scan(ieee->dev);
 765         }
 766 }
 767 EXPORT_SYMBOL(rtllib_start_scan_syncro);
 768
 769 static inline struct sk_buff *
 770 rtllib_authentication_req(struct rtllib_network *beacon,
 771                           struct rtllib_device *ieee,
 772                           int challengelen, u8 *daddr)
 773 {
 774         struct sk_buff *skb;
 775         struct rtllib_authentication *auth;
 776         int  len;
 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 = skb_put(skb, sizeof(struct rtllib_authentication));
 788
 789         auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
 790         if (challengelen)
 791                 auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP);
 792
 793         auth->header.duration_id = cpu_to_le16(0x013a);
 794         ether_addr_copy(auth->header.addr1, beacon->bssid);
 795         ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
 796         ether_addr_copy(auth->header.addr3, beacon->bssid);
 797         if (ieee->auth_mode == 0)
 798                 auth->algorithm = WLAN_AUTH_OPEN;
 799         else if (ieee->auth_mode == 1)
 800                 auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY);
 801         else if (ieee->auth_mode == 2)
 802                 auth->algorithm = WLAN_AUTH_OPEN;
 803         auth->transaction = cpu_to_le16(ieee->associate_seq);
 804         ieee->associate_seq++;
 805
 806         auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
 807
 808         return skb;
 809 }
 810
 811 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee,
 812                                          const u8 *dest)
 813 {
 814         u8 *tag;
 815         int beacon_size;
 816         struct rtllib_probe_response *beacon_buf;
 817         struct sk_buff *skb = NULL;
 818         int encrypt;
 819         int atim_len, erp_len;
 820         struct lib80211_crypt_data *crypt;
 821
 822         char *ssid = ieee->current_network.ssid;
 823         int ssid_len = ieee->current_network.ssid_len;
 824         int rate_len = ieee->current_network.rates_len+2;
 825         int rate_ex_len = ieee->current_network.rates_ex_len;
 826         int wpa_ie_len = ieee->wpa_ie_len;
 827         u8 erpinfo_content = 0;
 828
 829         u8 *tmp_ht_cap_buf = NULL;
 830         u8 tmp_ht_cap_len = 0;
 831         u8 *tmp_ht_info_buf = NULL;
 832         u8 tmp_ht_info_len = 0;
 833         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 834         u8 *tmp_generic_ie_buf = NULL;
 835         u8 tmp_generic_ie_len = 0;
 836
 837         if (rate_ex_len > 0)
 838                 rate_ex_len += 2;
 839
 840         if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
 841                 atim_len = 4;
 842         else
 843                 atim_len = 0;
 844
 845         if ((ieee->current_network.mode == IEEE_G) ||
 846            (ieee->current_network.mode == IEEE_N_24G &&
 847            ieee->pHTInfo->bCurSuppCCK)) {
 848                 erp_len = 3;
 849                 erpinfo_content = 0;
 850                 if (ieee->current_network.buseprotection)
 851                         erpinfo_content |= ERP_UseProtection;
 852         } else
 853                 erp_len = 0;
 854
 855         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 856         encrypt = ieee->host_encrypt && crypt && crypt->ops &&
 857                 ((strcmp(crypt->ops->name, "R-WEP") == 0 || wpa_ie_len));
 858         if (ieee->pHTInfo->bCurrentHTSupport) {
 859                 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
 860                 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
 861                 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
 862                 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
 863                 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
 864                                              &tmp_ht_cap_len, encrypt, false);
 865                 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
 866                                        encrypt);
 867
 868                 if (pHTInfo->bRegRT2RTAggregation) {
 869                         tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
 870                         tmp_generic_ie_len =
 871                                  sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
 872                         HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
 873                                                    &tmp_generic_ie_len);
 874                 }
 875         }
 876
 877         beacon_size = sizeof(struct rtllib_probe_response)+2+
 878                 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
 879                 + wpa_ie_len + ieee->tx_headroom;
 880         skb = dev_alloc_skb(beacon_size);
 881         if (!skb)
 882                 return NULL;
 883
 884         skb_reserve(skb, ieee->tx_headroom);
 885
 886         beacon_buf = skb_put(skb, (beacon_size - ieee->tx_headroom));
 887         ether_addr_copy(beacon_buf->header.addr1, dest);
 888         ether_addr_copy(beacon_buf->header.addr2, ieee->dev->dev_addr);
 889         ether_addr_copy(beacon_buf->header.addr3, ieee->current_network.bssid);
 890
 891         beacon_buf->header.duration_id = 0;
 892         beacon_buf->beacon_interval =
 893                 cpu_to_le16(ieee->current_network.beacon_interval);
 894         beacon_buf->capability =
 895                 cpu_to_le16(ieee->current_network.capability &
 896                 WLAN_CAPABILITY_IBSS);
 897         beacon_buf->capability |=
 898                 cpu_to_le16(ieee->current_network.capability &
 899                 WLAN_CAPABILITY_SHORT_PREAMBLE);
 900
 901         if (ieee->short_slot && (ieee->current_network.capability &
 902             WLAN_CAPABILITY_SHORT_SLOT_TIME))
 903                 beacon_buf->capability |=
 904                         cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
 905
 906         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 907         if (encrypt)
 908                 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
 909
 910
 911         beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
 912         beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
 913         beacon_buf->info_element[0].len = ssid_len;
 914
 915         tag = (u8 *) beacon_buf->info_element[0].data;
 916
 917         memcpy(tag, ssid, ssid_len);
 918
 919         tag += ssid_len;
 920
 921         *(tag++) = MFIE_TYPE_RATES;
 922         *(tag++) = rate_len-2;
 923         memcpy(tag, ieee->current_network.rates, rate_len-2);
 924         tag += rate_len-2;
 925
 926         *(tag++) = MFIE_TYPE_DS_SET;
 927         *(tag++) = 1;
 928         *(tag++) = ieee->current_network.channel;
 929
 930         if (atim_len) {
 931                 u16 val16;
 932                 *(tag++) = MFIE_TYPE_IBSS_SET;
 933                 *(tag++) = 2;
 934                 val16 = ieee->current_network.atim_window;
 935                 memcpy((u8 *)tag, (u8 *)&val16, 2);
 936                 tag += 2;
 937         }
 938
 939         if (erp_len) {
 940                 *(tag++) = MFIE_TYPE_ERP;
 941                 *(tag++) = 1;
 942                 *(tag++) = erpinfo_content;
 943         }
 944         if (rate_ex_len) {
 945                 *(tag++) = MFIE_TYPE_RATES_EX;
 946                 *(tag++) = rate_ex_len-2;
 947                 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
 948                 tag += rate_ex_len-2;
 949         }
 950
 951         if (wpa_ie_len) {
 952                 if (ieee->iw_mode == IW_MODE_ADHOC)
 953                         memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
 954                 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
 955                 tag += ieee->wpa_ie_len;
 956         }
 957         return skb;
 958 }
 959
 960 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
 961 {
 962         struct sk_buff *skb;
 963         u8 *tag;
 964
 965         struct lib80211_crypt_data *crypt;
 966         struct rtllib_assoc_response_frame *assoc;
 967         short encrypt;
 968
 969         unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
 970         int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
 971                   ieee->tx_headroom;
 972
 973         skb = dev_alloc_skb(len);
 974
 975         if (!skb)
 976                 return NULL;
 977
 978         skb_reserve(skb, ieee->tx_headroom);
 979
 980         assoc = skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
 981
 982         assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
 983         ether_addr_copy(assoc->header.addr1, dest);
 984         ether_addr_copy(assoc->header.addr3, ieee->dev->dev_addr);
 985         ether_addr_copy(assoc->header.addr2, ieee->dev->dev_addr);
 986         assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
 987                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
 988
 989
 990         if (ieee->short_slot)
 991                 assoc->capability |=
 992                                  cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
 993
 994         if (ieee->host_encrypt)
 995                 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 996         else
 997                 crypt = NULL;
 998
 999         encrypt = (crypt && crypt->ops);
1000
1001         if (encrypt)
1002                 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1003
1004         assoc->status = 0;
1005         assoc->aid = cpu_to_le16(ieee->assoc_id);
1006         if (ieee->assoc_id == 0x2007)
1007                 ieee->assoc_id = 0;
1008         else
1009                 ieee->assoc_id++;
1010
1011         tag = skb_put(skb, rate_len);
1012         rtllib_MFIE_Brate(ieee, &tag);
1013         rtllib_MFIE_Grate(ieee, &tag);
1014
1015         return skb;
1016 }
1017
1018 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1019                                  u8 *dest)
1020 {
1021         struct sk_buff *skb = NULL;
1022         struct rtllib_authentication *auth;
1023         int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1024
1025         skb = dev_alloc_skb(len);
1026         if (!skb)
1027                 return NULL;
1028
1029         skb->len = sizeof(struct rtllib_authentication);
1030
1031         skb_reserve(skb, ieee->tx_headroom);
1032
1033         auth = skb_put(skb, sizeof(struct rtllib_authentication));
1034
1035         auth->status = cpu_to_le16(status);
1036         auth->transaction = cpu_to_le16(2);
1037         auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1038
1039         ether_addr_copy(auth->header.addr3, ieee->dev->dev_addr);
1040         ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
1041         ether_addr_copy(auth->header.addr1, dest);
1042         auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1043         return skb;
1044
1045
1046 }
1047
1048 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1049 {
1050         struct sk_buff *skb;
1051         struct rtllib_hdr_3addr *hdr;
1052
1053         skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1054         if (!skb)
1055                 return NULL;
1056
1057         skb_reserve(skb, ieee->tx_headroom);
1058
1059         hdr = skb_put(skb, sizeof(struct rtllib_hdr_3addr));
1060
1061         ether_addr_copy(hdr->addr1, ieee->current_network.bssid);
1062         ether_addr_copy(hdr->addr2, ieee->dev->dev_addr);
1063         ether_addr_copy(hdr->addr3, ieee->current_network.bssid);
1064
1065         hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1066                 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1067                 (pwr ? RTLLIB_FCTL_PM : 0));
1068
1069         return skb;
1070
1071
1072 }
1073
1074 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1075 {
1076         struct sk_buff *skb;
1077         struct rtllib_pspoll_hdr *hdr;
1078
1079         skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1080         if (!skb)
1081                 return NULL;
1082
1083         skb_reserve(skb, ieee->tx_headroom);
1084
1085         hdr = skb_put(skb, sizeof(struct rtllib_pspoll_hdr));
1086
1087         ether_addr_copy(hdr->bssid, ieee->current_network.bssid);
1088         ether_addr_copy(hdr->ta, ieee->dev->dev_addr);
1089
1090         hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1091         hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1092                          RTLLIB_FCTL_PM);
1093
1094         return skb;
1095
1096 }
1097
1098 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1099 {
1100         struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1101
1102         if (buf)
1103                 softmac_mgmt_xmit(buf, ieee);
1104 }
1105
1106
1107 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1108 {
1109         struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1110
1111         if (buf)
1112                 softmac_mgmt_xmit(buf, ieee);
1113 }
1114
1115
1116 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1117 {
1118         struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1119
1120         if (buf)
1121                 softmac_mgmt_xmit(buf, ieee);
1122 }
1123
1124
1125 static inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1126 {
1127         int i = 0;
1128
1129         do {
1130                 if ((ieee->PMKIDList[i].bUsed) &&
1131                    (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1132                         break;
1133                 i++;
1134         } while (i < NUM_PMKID_CACHE);
1135
1136         if (i == NUM_PMKID_CACHE)
1137                 i = -1;
1138         return i;
1139 }
1140
1141 static inline struct sk_buff *
1142 rtllib_association_req(struct rtllib_network *beacon,
1143                        struct rtllib_device *ieee)
1144 {
1145         struct sk_buff *skb;
1146         struct rtllib_assoc_request_frame *hdr;
1147         u8 *tag, *ies;
1148         int i;
1149         u8 *ht_cap_buf = NULL;
1150         u8 ht_cap_len = 0;
1151         u8 *realtek_ie_buf = NULL;
1152         u8 realtek_ie_len = 0;
1153         int wpa_ie_len = ieee->wpa_ie_len;
1154         int wps_ie_len = ieee->wps_ie_len;
1155         unsigned int ckip_ie_len = 0;
1156         unsigned int ccxrm_ie_len = 0;
1157         unsigned int cxvernum_ie_len = 0;
1158         struct lib80211_crypt_data *crypt;
1159         int encrypt;
1160         int     PMKCacheIdx;
1161
1162         unsigned int rate_len = (beacon->rates_len ?
1163                                 (beacon->rates_len + 2) : 0) +
1164                                 (beacon->rates_ex_len ? (beacon->rates_ex_len) +
1165                                 2 : 0);
1166
1167         unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1168         unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1169
1170         int len = 0;
1171
1172         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1173         if (crypt != NULL)
1174                 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1175                           ((strcmp(crypt->ops->name, "R-WEP") == 0 ||
1176                           wpa_ie_len));
1177         else
1178                 encrypt = 0;
1179
1180         if ((ieee->rtllib_ap_sec_type &&
1181             (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1182             ieee->bForcedBgMode) {
1183                 ieee->pHTInfo->bEnableHT = 0;
1184                 ieee->mode = WIRELESS_MODE_G;
1185         }
1186
1187         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1188                 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1189                 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1190                 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1191                                              encrypt, true);
1192                 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1193                         realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1194                         realtek_ie_len =
1195                                  sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1196                         HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1197                                                    &realtek_ie_len);
1198                 }
1199         }
1200
1201         if (beacon->bCkipSupported)
1202                 ckip_ie_len = 30+2;
1203         if (beacon->bCcxRmEnable)
1204                 ccxrm_ie_len = 6+2;
1205         if (beacon->BssCcxVerNumber >= 2)
1206                 cxvernum_ie_len = 5+2;
1207
1208         PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1209         if (PMKCacheIdx >= 0) {
1210                 wpa_ie_len += 18;
1211                 netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n",
1212                             wpa_ie_len);
1213         }
1214         len = sizeof(struct rtllib_assoc_request_frame) + 2
1215                 + beacon->ssid_len
1216                 + rate_len
1217                 + wpa_ie_len
1218                 + wps_ie_len
1219                 + wmm_info_len
1220                 + turbo_info_len
1221                 + ht_cap_len
1222                 + realtek_ie_len
1223                 + ckip_ie_len
1224                 + ccxrm_ie_len
1225                 + cxvernum_ie_len
1226                 + ieee->tx_headroom;
1227
1228         skb = dev_alloc_skb(len);
1229
1230         if (!skb)
1231                 return NULL;
1232
1233         skb_reserve(skb, ieee->tx_headroom);
1234
1235         hdr = skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1236
1237
1238         hdr->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_REQ);
1239         hdr->header.duration_id = cpu_to_le16(37);
1240         ether_addr_copy(hdr->header.addr1, beacon->bssid);
1241         ether_addr_copy(hdr->header.addr2, ieee->dev->dev_addr);
1242         ether_addr_copy(hdr->header.addr3, beacon->bssid);
1243
1244         ether_addr_copy(ieee->ap_mac_addr, beacon->bssid);
1245
1246         hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1247         if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1248                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1249
1250         if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1251                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1252
1253         if (ieee->short_slot &&
1254            (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1255                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1256
1257
1258         hdr->listen_interval = cpu_to_le16(beacon->listen_interval);
1259
1260         hdr->info_element[0].id = MFIE_TYPE_SSID;
1261
1262         hdr->info_element[0].len = beacon->ssid_len;
1263         skb_put_data(skb, beacon->ssid, beacon->ssid_len);
1264
1265         tag = skb_put(skb, rate_len);
1266
1267         if (beacon->rates_len) {
1268                 *tag++ = MFIE_TYPE_RATES;
1269                 *tag++ = beacon->rates_len;
1270                 for (i = 0; i < beacon->rates_len; i++)
1271                         *tag++ = beacon->rates[i];
1272         }
1273
1274         if (beacon->rates_ex_len) {
1275                 *tag++ = MFIE_TYPE_RATES_EX;
1276                 *tag++ = beacon->rates_ex_len;
1277                 for (i = 0; i < beacon->rates_ex_len; i++)
1278                         *tag++ = beacon->rates_ex[i];
1279         }
1280
1281         if (beacon->bCkipSupported) {
1282                 static const u8 AironetIeOui[] = {0x00, 0x01, 0x66};
1283                 u8      CcxAironetBuf[30];
1284                 struct octet_string osCcxAironetIE;
1285
1286                 memset(CcxAironetBuf, 0, 30);
1287                 osCcxAironetIE.Octet = CcxAironetBuf;
1288                 osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1289                 memcpy(osCcxAironetIE.Octet, AironetIeOui,
1290                        sizeof(AironetIeOui));
1291
1292                 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1293                                          (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1294                 tag = skb_put(skb, ckip_ie_len);
1295                 *tag++ = MFIE_TYPE_AIRONET;
1296                 *tag++ = osCcxAironetIE.Length;
1297                 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1298                 tag += osCcxAironetIE.Length;
1299         }
1300
1301         if (beacon->bCcxRmEnable) {
1302                 static const u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01,
1303                         0x00};
1304                 struct octet_string osCcxRmCap;
1305
1306                 osCcxRmCap.Octet = (u8 *) CcxRmCapBuf;
1307                 osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1308                 tag = skb_put(skb, ccxrm_ie_len);
1309                 *tag++ = MFIE_TYPE_GENERIC;
1310                 *tag++ = osCcxRmCap.Length;
1311                 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1312                 tag += osCcxRmCap.Length;
1313         }
1314
1315         if (beacon->BssCcxVerNumber >= 2) {
1316                 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1317                 struct octet_string osCcxVerNum;
1318
1319                 CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1320                 osCcxVerNum.Octet = CcxVerNumBuf;
1321                 osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1322                 tag = skb_put(skb, cxvernum_ie_len);
1323                 *tag++ = MFIE_TYPE_GENERIC;
1324                 *tag++ = osCcxVerNum.Length;
1325                 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1326                 tag += osCcxVerNum.Length;
1327         }
1328         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1329                 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1330                         tag = skb_put(skb, ht_cap_len);
1331                         *tag++ = MFIE_TYPE_HT_CAP;
1332                         *tag++ = ht_cap_len - 2;
1333                         memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1334                         tag += ht_cap_len - 2;
1335                 }
1336         }
1337
1338         if (wpa_ie_len) {
1339                 skb_put_data(skb, ieee->wpa_ie, ieee->wpa_ie_len);
1340
1341                 if (PMKCacheIdx >= 0) {
1342                         tag = skb_put(skb, 18);
1343                         *tag = 1;
1344                         *(tag + 1) = 0;
1345                         memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1346                                16);
1347                 }
1348         }
1349         if (wmm_info_len) {
1350                 tag = skb_put(skb, wmm_info_len);
1351                 rtllib_WMM_Info(ieee, &tag);
1352         }
1353
1354         if (wps_ie_len && ieee->wps_ie)
1355                 skb_put_data(skb, ieee->wps_ie, wps_ie_len);
1356
1357         if (turbo_info_len) {
1358                 tag = skb_put(skb, turbo_info_len);
1359                 rtllib_TURBO_Info(ieee, &tag);
1360         }
1361
1362         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1363                 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1364                         tag = skb_put(skb, ht_cap_len);
1365                         *tag++ = MFIE_TYPE_GENERIC;
1366                         *tag++ = ht_cap_len - 2;
1367                         memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1368                         tag += ht_cap_len - 2;
1369                 }
1370
1371                 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1372                         tag = skb_put(skb, realtek_ie_len);
1373                         *tag++ = MFIE_TYPE_GENERIC;
1374                         *tag++ = realtek_ie_len - 2;
1375                         memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1376                 }
1377         }
1378
1379         kfree(ieee->assocreq_ies);
1380         ieee->assocreq_ies = NULL;
1381         ies = &(hdr->info_element[0].id);
1382         ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1383         ieee->assocreq_ies = kmemdup(ies, ieee->assocreq_ies_len, GFP_ATOMIC);
1384         if (!ieee->assocreq_ies)
1385                 ieee->assocreq_ies_len = 0;
1386
1387         return skb;
1388 }
1389
1390 static void rtllib_associate_abort(struct rtllib_device *ieee)
1391 {
1392         unsigned long flags;
1393
1394         spin_lock_irqsave(&ieee->lock, flags);
1395
1396         ieee->associate_seq++;
1397
1398         /* don't scan, and avoid to have the RX path possibily
1399          * try again to associate. Even do not react to AUTH or
1400          * ASSOC response. Just wait for the retry wq to be scheduled.
1401          * Here we will check if there are good nets to associate
1402          * with, so we retry or just get back to NO_LINK and scanning
1403          */
1404         if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1405                 netdev_dbg(ieee->dev, "Authentication failed\n");
1406                 ieee->softmac_stats.no_auth_rs++;
1407         } else {
1408                 netdev_dbg(ieee->dev, "Association failed\n");
1409                 ieee->softmac_stats.no_ass_rs++;
1410         }
1411
1412         ieee->state = RTLLIB_ASSOCIATING_RETRY;
1413
1414         schedule_delayed_work(&ieee->associate_retry_wq,
1415                               RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1416
1417         spin_unlock_irqrestore(&ieee->lock, flags);
1418 }
1419
1420 static void rtllib_associate_abort_cb(struct timer_list *t)
1421 {
1422         struct rtllib_device *dev = from_timer(dev, t, associate_timer);
1423
1424         rtllib_associate_abort(dev);
1425 }
1426
1427 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr)
1428 {
1429         struct rtllib_network *beacon = &ieee->current_network;
1430         struct sk_buff *skb;
1431
1432         netdev_dbg(ieee->dev, "Stopping scan\n");
1433
1434         ieee->softmac_stats.tx_auth_rq++;
1435
1436         skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1437
1438         if (!skb)
1439                 rtllib_associate_abort(ieee);
1440         else {
1441                 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING;
1442                 netdev_dbg(ieee->dev, "Sending authentication request\n");
1443                 softmac_mgmt_xmit(skb, ieee);
1444                 if (!timer_pending(&ieee->associate_timer)) {
1445                         ieee->associate_timer.expires = jiffies + (HZ / 2);
1446                         add_timer(&ieee->associate_timer);
1447                 }
1448         }
1449 }
1450
1451 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge,
1452                                   int chlen)
1453 {
1454         u8 *c;
1455         struct sk_buff *skb;
1456         struct rtllib_network *beacon = &ieee->current_network;
1457
1458         ieee->associate_seq++;
1459         ieee->softmac_stats.tx_auth_rq++;
1460
1461         skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1462
1463         if (!skb)
1464                 rtllib_associate_abort(ieee);
1465         else {
1466                 c = skb_put(skb, chlen+2);
1467                 *(c++) = MFIE_TYPE_CHALLENGE;
1468                 *(c++) = chlen;
1469                 memcpy(c, challenge, chlen);
1470
1471                 netdev_dbg(ieee->dev,
1472                            "Sending authentication challenge response\n");
1473
1474                 rtllib_encrypt_fragment(ieee, skb,
1475                                         sizeof(struct rtllib_hdr_3addr));
1476
1477                 softmac_mgmt_xmit(skb, ieee);
1478                 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1479         }
1480         kfree(challenge);
1481 }
1482
1483 static void rtllib_associate_step2(struct rtllib_device *ieee)
1484 {
1485         struct sk_buff *skb;
1486         struct rtllib_network *beacon = &ieee->current_network;
1487
1488         del_timer_sync(&ieee->associate_timer);
1489
1490         netdev_dbg(ieee->dev, "Sending association request\n");
1491
1492         ieee->softmac_stats.tx_ass_rq++;
1493         skb = rtllib_association_req(beacon, ieee);
1494         if (!skb)
1495                 rtllib_associate_abort(ieee);
1496         else {
1497                 softmac_mgmt_xmit(skb, ieee);
1498                 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1499         }
1500 }
1501
1502 static void rtllib_associate_complete_wq(void *data)
1503 {
1504         struct rtllib_device *ieee = (struct rtllib_device *)
1505                                      container_of_work_rsl(data,
1506                                      struct rtllib_device,
1507                                      associate_complete_wq);
1508         struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl);
1509
1510         netdev_info(ieee->dev, "Associated successfully with %pM\n",
1511                     ieee->current_network.bssid);
1512         if (!ieee->is_silent_reset) {
1513                 netdev_info(ieee->dev, "normal associate\n");
1514                 notify_wx_assoc_event(ieee);
1515         }
1516
1517         netif_carrier_on(ieee->dev);
1518         ieee->is_roaming = false;
1519         if (rtllib_is_54g(&ieee->current_network) &&
1520            (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1521                 ieee->rate = 108;
1522                 netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate);
1523         } else {
1524                 ieee->rate = 22;
1525                 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1526                 netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate);
1527         }
1528         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1529                 netdev_info(ieee->dev, "Successfully associated, ht enabled\n");
1530                 HTOnAssocRsp(ieee);
1531         } else {
1532                 netdev_info(ieee->dev,
1533                             "Successfully associated, ht not enabled(%d, %d)\n",
1534                             ieee->pHTInfo->bCurrentHTSupport,
1535                             ieee->pHTInfo->bEnableHT);
1536                 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1537         }
1538         ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1539                                        ieee->current_network.beacon_interval /
1540                                        500);
1541         if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1542             ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1543                 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1544                 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1545         }
1546         pPSC->LpsIdleCount = 0;
1547         ieee->link_change(ieee->dev);
1548
1549         if (ieee->is_silent_reset) {
1550                 netdev_info(ieee->dev, "silent reset associate\n");
1551                 ieee->is_silent_reset = false;
1552         }
1553
1554         if (ieee->data_hard_resume)
1555                 ieee->data_hard_resume(ieee->dev);
1556
1557 }
1558
1559 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1560 {
1561 }
1562
1563 static void rtllib_associate_complete(struct rtllib_device *ieee)
1564 {
1565         del_timer_sync(&ieee->associate_timer);
1566
1567         ieee->state = RTLLIB_LINKED;
1568         rtllib_sta_send_associnfo(ieee);
1569
1570         schedule_work(&ieee->associate_complete_wq);
1571 }
1572
1573 static void rtllib_associate_procedure_wq(void *data)
1574 {
1575         struct rtllib_device *ieee = container_of_dwork_rsl(data,
1576                                      struct rtllib_device,
1577                                      associate_procedure_wq);
1578         rtllib_stop_scan_syncro(ieee);
1579         if (ieee->rtllib_ips_leave != NULL)
1580                 ieee->rtllib_ips_leave(ieee->dev);
1581         mutex_lock(&ieee->wx_mutex);
1582
1583         if (ieee->data_hard_stop)
1584                 ieee->data_hard_stop(ieee->dev);
1585
1586         rtllib_stop_scan(ieee);
1587         RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1588                  ieee->current_network.channel);
1589         HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1590         if (ieee->eRFPowerState == eRfOff) {
1591                 RT_TRACE(COMP_DBG,
1592                          "=============>%s():Rf state is eRfOff, schedule ipsleave wq again,return\n",
1593                          __func__);
1594                 if (ieee->rtllib_ips_leave_wq != NULL)
1595                         ieee->rtllib_ips_leave_wq(ieee->dev);
1596                 mutex_unlock(&ieee->wx_mutex);
1597                 return;
1598         }
1599         ieee->associate_seq = 1;
1600
1601         rtllib_associate_step1(ieee, ieee->current_network.bssid);
1602
1603         mutex_unlock(&ieee->wx_mutex);
1604 }
1605
1606 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1607                                    struct rtllib_network *net)
1608 {
1609         u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1610         int tmp_ssid_len = 0;
1611
1612         short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1613
1614         /* we are interested in new new only if we are not associated
1615          * and we are not associating / authenticating
1616          */
1617         if (ieee->state != RTLLIB_NOLINK)
1618                 return;
1619
1620         if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1621             WLAN_CAPABILITY_ESS))
1622                 return;
1623
1624         if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1625              WLAN_CAPABILITY_IBSS))
1626                 return;
1627
1628         if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1629             (net->channel > ieee->ibss_maxjoin_chal))
1630                 return;
1631         if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1632                 /* if the user specified the AP MAC, we need also the essid
1633                  * This could be obtained by beacons or, if the network does not
1634                  * broadcast it, it can be put manually.
1635                  */
1636                 apset = ieee->wap_set;
1637                 ssidset = ieee->ssid_set;
1638                 ssidbroad =  !(net->ssid_len == 0 || net->ssid[0] == '\0');
1639                 apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1640                                   ETH_ALEN) == 0);
1641                 if (!ssidbroad) {
1642                         ssidmatch = (ieee->current_network.ssid_len ==
1643                                     net->hidden_ssid_len) &&
1644                                     (!strncmp(ieee->current_network.ssid,
1645                                     net->hidden_ssid, net->hidden_ssid_len));
1646                         if (net->hidden_ssid_len > 0) {
1647                                 strncpy(net->ssid, net->hidden_ssid,
1648                                         net->hidden_ssid_len);
1649                                 net->ssid_len = net->hidden_ssid_len;
1650                                 ssidbroad = 1;
1651                         }
1652                 } else
1653                         ssidmatch =
1654                            (ieee->current_network.ssid_len == net->ssid_len) &&
1655                            (!strncmp(ieee->current_network.ssid, net->ssid,
1656                            net->ssid_len));
1657
1658                 /* if the user set the AP check if match.
1659                  * if the network does not broadcast essid we check the
1660                  *       user supplied ANY essid
1661                  * if the network does broadcast and the user does not set
1662                  *       essid it is OK
1663                  * if the network does broadcast and the user did set essid
1664                  * check if essid match
1665                  * if the ap is not set, check that the user set the bssid
1666                  * and the network does broadcast and that those two bssid match
1667                  */
1668                 if ((apset && apmatch &&
1669                    ((ssidset && ssidbroad && ssidmatch) ||
1670                    (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1671                    (!apset && ssidset && ssidbroad && ssidmatch) ||
1672                    (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1673                         /* Save the essid so that if it is hidden, it is
1674                          * replaced with the essid provided by the user.
1675                          */
1676                         if (!ssidbroad) {
1677                                 memcpy(tmp_ssid, ieee->current_network.ssid,
1678                                        ieee->current_network.ssid_len);
1679                                 tmp_ssid_len = ieee->current_network.ssid_len;
1680                         }
1681                         memcpy(&ieee->current_network, net,
1682                                 sizeof(ieee->current_network));
1683                         if (!ssidbroad) {
1684                                 memcpy(ieee->current_network.ssid, tmp_ssid,
1685                                        tmp_ssid_len);
1686                                 ieee->current_network.ssid_len = tmp_ssid_len;
1687                         }
1688                         netdev_info(ieee->dev,
1689                                     "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d, mode:%x cur_net.flags:0x%x\n",
1690                                     ieee->current_network.ssid,
1691                                     ieee->current_network.channel,
1692                                     ieee->current_network.qos_data.supported,
1693                                     ieee->pHTInfo->bEnableHT,
1694                                     ieee->current_network.bssht.bd_support_ht,
1695                                     ieee->current_network.mode,
1696                                     ieee->current_network.flags);
1697
1698                         if ((rtllib_act_scanning(ieee, false)) &&
1699                            !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1700                                 rtllib_stop_scan_syncro(ieee);
1701
1702                         HTResetIOTSetting(ieee->pHTInfo);
1703                         ieee->wmm_acm = 0;
1704                         if (ieee->iw_mode == IW_MODE_INFRA) {
1705                                 /* Join the network for the first time */
1706                                 ieee->AsocRetryCount = 0;
1707                                 if ((ieee->current_network.qos_data.supported == 1) &&
1708                                     ieee->current_network.bssht.bd_support_ht)
1709                                         HTResetSelfAndSavePeerSetting(ieee,
1710                                                  &(ieee->current_network));
1711                                 else
1712                                         ieee->pHTInfo->bCurrentHTSupport =
1713                                                                  false;
1714
1715                                 ieee->state = RTLLIB_ASSOCIATING;
1716                                 if (ieee->LedControlHandler != NULL)
1717                                         ieee->LedControlHandler(ieee->dev,
1718                                                          LED_CTL_START_TO_LINK);
1719                                 schedule_delayed_work(
1720                                            &ieee->associate_procedure_wq, 0);
1721                         } else {
1722                                 if (rtllib_is_54g(&ieee->current_network) &&
1723                                     (ieee->modulation &
1724                                      RTLLIB_OFDM_MODULATION)) {
1725                                         ieee->rate = 108;
1726                                         ieee->SetWirelessMode(ieee->dev,
1727                                                               IEEE_G);
1728                                         netdev_info(ieee->dev,
1729                                                     "Using G rates\n");
1730                                 } else {
1731                                         ieee->rate = 22;
1732                                         ieee->SetWirelessMode(ieee->dev,
1733                                                               IEEE_B);
1734                                         netdev_info(ieee->dev,
1735                                                     "Using B rates\n");
1736                                 }
1737                                 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1738                                 ieee->state = RTLLIB_LINKED;
1739                         }
1740                 }
1741         }
1742 }
1743
1744 static void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1745 {
1746         unsigned long flags;
1747         struct rtllib_network *target;
1748
1749         spin_lock_irqsave(&ieee->lock, flags);
1750
1751         list_for_each_entry(target, &ieee->network_list, list) {
1752
1753                 /* if the state become different that NOLINK means
1754                  * we had found what we are searching for
1755                  */
1756
1757                 if (ieee->state != RTLLIB_NOLINK)
1758                         break;
1759
1760                 if (ieee->scan_age == 0 || time_after(target->last_scanned +
1761                     ieee->scan_age, jiffies))
1762                         rtllib_softmac_new_net(ieee, target);
1763         }
1764         spin_unlock_irqrestore(&ieee->lock, flags);
1765 }
1766
1767 static inline u16 auth_parse(struct net_device *dev, struct sk_buff *skb,
1768                              u8 **challenge, int *chlen)
1769 {
1770         struct rtllib_authentication *a;
1771         u8 *t;
1772
1773         if (skb->len <  (sizeof(struct rtllib_authentication) -
1774             sizeof(struct rtllib_info_element))) {
1775                 netdev_dbg(dev, "invalid len in auth resp: %d\n", skb->len);
1776                 return 0xcafe;
1777         }
1778         *challenge = NULL;
1779         a = (struct rtllib_authentication *) skb->data;
1780         if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1781                 t = skb->data + sizeof(struct rtllib_authentication);
1782
1783                 if (*(t++) == MFIE_TYPE_CHALLENGE) {
1784                         *chlen = *(t++);
1785                         *challenge = kmemdup(t, *chlen, GFP_ATOMIC);
1786                         if (!*challenge)
1787                                 return -ENOMEM;
1788                 }
1789         }
1790         return le16_to_cpu(a->status);
1791 }
1792
1793 static int auth_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest)
1794 {
1795         struct rtllib_authentication *a;
1796
1797         if (skb->len <  (sizeof(struct rtllib_authentication) -
1798             sizeof(struct rtllib_info_element))) {
1799                 netdev_dbg(dev, "invalid len in auth request: %d\n", skb->len);
1800                 return -1;
1801         }
1802         a = (struct rtllib_authentication *) skb->data;
1803
1804         ether_addr_copy(dest, a->header.addr2);
1805
1806         if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1807                 return  WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1808
1809         return WLAN_STATUS_SUCCESS;
1810 }
1811
1812 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1813                             u8 *src)
1814 {
1815         u8 *tag;
1816         u8 *skbend;
1817         u8 *ssid = NULL;
1818         u8 ssidlen = 0;
1819         struct rtllib_hdr_3addr   *header =
1820                 (struct rtllib_hdr_3addr   *) skb->data;
1821         bool bssid_match;
1822
1823         if (skb->len < sizeof(struct rtllib_hdr_3addr))
1824                 return -1; /* corrupted */
1825
1826         bssid_match =
1827           (!ether_addr_equal(header->addr3, ieee->current_network.bssid)) &&
1828           (!is_broadcast_ether_addr(header->addr3));
1829         if (bssid_match)
1830                 return -1;
1831
1832         ether_addr_copy(src, header->addr2);
1833
1834         skbend = (u8 *)skb->data + skb->len;
1835
1836         tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1837
1838         while (tag + 1 < skbend) {
1839                 if (*tag == 0) {
1840                         ssid = tag + 2;
1841                         ssidlen = *(tag + 1);
1842                         break;
1843                 }
1844                 tag++; /* point to the len field */
1845                 tag = tag + *(tag); /* point to the last data byte of the tag */
1846                 tag++; /* point to the next tag */
1847         }
1848
1849         if (ssidlen == 0)
1850                 return 1;
1851
1852         if (!ssid)
1853                 return 1; /* ssid not found in tagged param */
1854
1855         return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1856 }
1857
1858 static int assoc_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest)
1859 {
1860         struct rtllib_assoc_request_frame *a;
1861
1862         if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1863                 sizeof(struct rtllib_info_element))) {
1864                 netdev_dbg(dev, "invalid len in auth request:%d\n", skb->len);
1865                 return -1;
1866         }
1867
1868         a = (struct rtllib_assoc_request_frame *) skb->data;
1869
1870         ether_addr_copy(dest, a->header.addr2);
1871
1872         return 0;
1873 }
1874
1875 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1876                               int *aid)
1877 {
1878         struct rtllib_assoc_response_frame *response_head;
1879         u16 status_code;
1880
1881         if (skb->len <  sizeof(struct rtllib_assoc_response_frame)) {
1882                 netdev_dbg(ieee->dev, "Invalid len in auth resp: %d\n",
1883                            skb->len);
1884                 return 0xcafe;
1885         }
1886
1887         response_head = (struct rtllib_assoc_response_frame *) skb->data;
1888         *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1889
1890         status_code = le16_to_cpu(response_head->status);
1891         if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1892            status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1893            ((ieee->mode == IEEE_G) &&
1894            (ieee->current_network.mode == IEEE_N_24G) &&
1895            (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1896                 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1897         } else {
1898                 ieee->AsocRetryCount = 0;
1899         }
1900
1901         return le16_to_cpu(response_head->status);
1902 }
1903
1904 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1905 {
1906         u8 dest[ETH_ALEN];
1907
1908         ieee->softmac_stats.rx_probe_rq++;
1909         if (probe_rq_parse(ieee, skb, dest) > 0) {
1910                 ieee->softmac_stats.tx_probe_rs++;
1911                 rtllib_resp_to_probe(ieee, dest);
1912         }
1913 }
1914
1915 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1916                                      struct sk_buff *skb)
1917 {
1918         u8 dest[ETH_ALEN];
1919         int status;
1920
1921         ieee->softmac_stats.rx_auth_rq++;
1922
1923         status = auth_rq_parse(ieee->dev, skb, dest);
1924         if (status != -1)
1925                 rtllib_resp_to_auth(ieee, status, dest);
1926 }
1927
1928 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1929                                       struct sk_buff *skb)
1930 {
1931         u8 dest[ETH_ALEN];
1932
1933
1934         ieee->softmac_stats.rx_ass_rq++;
1935         if (assoc_rq_parse(ieee->dev, skb, dest) != -1)
1936                 rtllib_resp_to_assoc_rq(ieee, dest);
1937
1938         netdev_info(ieee->dev, "New client associated: %pM\n", dest);
1939 }
1940
1941 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1942 {
1943
1944         struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1945
1946         if (buf)
1947                 softmac_ps_mgmt_xmit(buf, ieee);
1948 }
1949 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1950
1951 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1952 {
1953         struct sk_buff *buf = rtllib_pspoll_func(ieee);
1954
1955         if (buf)
1956                 softmac_ps_mgmt_xmit(buf, ieee);
1957 }
1958
1959 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1960 {
1961         int timeout;
1962         u8 dtim;
1963         struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl);
1964
1965         if (ieee->LPSDelayCnt) {
1966                 ieee->LPSDelayCnt--;
1967                 return 0;
1968         }
1969
1970         dtim = ieee->current_network.dtim_data;
1971         if (!(dtim & RTLLIB_DTIM_VALID))
1972                 return 0;
1973         timeout = ieee->current_network.beacon_interval;
1974         ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1975         /* there's no need to nofity AP that I find you buffered
1976          * with broadcast packet
1977          */
1978         if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1979                 return 2;
1980
1981         if (!time_after(jiffies,
1982                         dev_trans_start(ieee->dev) + msecs_to_jiffies(timeout)))
1983                 return 0;
1984         if (!time_after(jiffies,
1985                         ieee->last_rx_ps_time + msecs_to_jiffies(timeout)))
1986                 return 0;
1987         if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
1988             (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
1989                 return 0;
1990
1991         if (time) {
1992                 if (ieee->bAwakePktSent) {
1993                         pPSC->LPSAwakeIntvl = 1;
1994                 } else {
1995                         u8 MaxPeriod = 1;
1996
1997                         if (pPSC->LPSAwakeIntvl == 0)
1998                                 pPSC->LPSAwakeIntvl = 1;
1999                         if (pPSC->RegMaxLPSAwakeIntvl == 0)
2000                                 MaxPeriod = 1;
2001                         else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2002                                 MaxPeriod = ieee->current_network.dtim_period;
2003                         else
2004                                 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2005                         pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2006                                                MaxPeriod) ? MaxPeriod :
2007                                                (pPSC->LPSAwakeIntvl + 1);
2008                 }
2009                 {
2010                         u8 LPSAwakeIntvl_tmp = 0;
2011                         u8 period = ieee->current_network.dtim_period;
2012                         u8 count = ieee->current_network.tim.tim_count;
2013
2014                         if (count == 0) {
2015                                 if (pPSC->LPSAwakeIntvl > period)
2016                                         LPSAwakeIntvl_tmp = period +
2017                                                  (pPSC->LPSAwakeIntvl -
2018                                                  period) -
2019                                                  ((pPSC->LPSAwakeIntvl-period) %
2020                                                  period);
2021                                 else
2022                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2023
2024                         } else {
2025                                 if (pPSC->LPSAwakeIntvl >
2026                                     ieee->current_network.tim.tim_count)
2027                                         LPSAwakeIntvl_tmp = count +
2028                                         (pPSC->LPSAwakeIntvl - count) -
2029                                         ((pPSC->LPSAwakeIntvl-count)%period);
2030                                 else
2031                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2032                         }
2033
2034                 *time = ieee->current_network.last_dtim_sta_time
2035                         + msecs_to_jiffies(ieee->current_network.beacon_interval *
2036                         LPSAwakeIntvl_tmp);
2037         }
2038         }
2039
2040         return 1;
2041
2042
2043 }
2044
2045 static inline void rtllib_sta_ps(struct tasklet_struct *t)
2046 {
2047         struct rtllib_device *ieee = from_tasklet(ieee, t, ps_task);
2048         u64 time;
2049         short sleep;
2050         unsigned long flags, flags2;
2051
2052         spin_lock_irqsave(&ieee->lock, flags);
2053
2054         if ((ieee->ps == RTLLIB_PS_DISABLED ||
2055              ieee->iw_mode != IW_MODE_INFRA ||
2056              ieee->state != RTLLIB_LINKED)) {
2057                 RT_TRACE(COMP_DBG,
2058                          "=====>%s(): no need to ps,wake up!! ieee->ps is %d, ieee->iw_mode is %d, ieee->state is %d\n",
2059                          __func__, ieee->ps, ieee->iw_mode, ieee->state);
2060                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2061                 rtllib_sta_wakeup(ieee, 1);
2062
2063                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2064         }
2065         sleep = rtllib_sta_ps_sleep(ieee, &time);
2066         /* 2 wake, 1 sleep, 0 do nothing */
2067         if (sleep == 0)
2068                 goto out;
2069         if (sleep == 1) {
2070                 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2071                         ieee->enter_sleep_state(ieee->dev, time);
2072                 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2073                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2074
2075                         if (ieee->ps_is_queue_empty(ieee->dev)) {
2076                                 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2077                                 ieee->ack_tx_to_ieee = 1;
2078                                 rtllib_sta_ps_send_null_frame(ieee, 1);
2079                                 ieee->ps_time = time;
2080                         }
2081                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2082
2083                 }
2084
2085                 ieee->bAwakePktSent = false;
2086
2087         } else if (sleep == 2) {
2088                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2089
2090                 rtllib_sta_wakeup(ieee, 1);
2091
2092                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2093         }
2094
2095 out:
2096         spin_unlock_irqrestore(&ieee->lock, flags);
2097
2098 }
2099
2100 static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2101 {
2102         if (ieee->sta_sleep == LPS_IS_WAKE) {
2103                 if (nl) {
2104                         if (ieee->pHTInfo->IOTAction &
2105                             HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2106                                 ieee->ack_tx_to_ieee = 1;
2107                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2108                         } else {
2109                                 ieee->ack_tx_to_ieee = 1;
2110                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2111                         }
2112                 }
2113                 return;
2114
2115         }
2116
2117         if (ieee->sta_sleep == LPS_IS_SLEEP)
2118                 ieee->sta_wake_up(ieee->dev);
2119         if (nl) {
2120                 if (ieee->pHTInfo->IOTAction &
2121                     HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2122                         ieee->ack_tx_to_ieee = 1;
2123                         rtllib_sta_ps_send_null_frame(ieee, 0);
2124                 } else {
2125                         ieee->ack_tx_to_ieee = 1;
2126                         ieee->polling = true;
2127                         rtllib_sta_ps_send_pspoll_frame(ieee);
2128                 }
2129
2130         } else {
2131                 ieee->sta_sleep = LPS_IS_WAKE;
2132                 ieee->polling = false;
2133         }
2134 }
2135
2136 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2137 {
2138         unsigned long flags, flags2;
2139
2140         spin_lock_irqsave(&ieee->lock, flags);
2141
2142         if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2143                 /* Null frame with PS bit set */
2144                 if (success) {
2145                         ieee->sta_sleep = LPS_IS_SLEEP;
2146                         ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2147                 }
2148                 /* if the card report not success we can't be sure the AP
2149                  * has not RXed so we can't assume the AP believe us awake
2150                  */
2151         } else {/* 21112005 - tx again null without PS bit if lost */
2152
2153                 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2154                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2155                         if (ieee->pHTInfo->IOTAction &
2156                             HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2157                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2158                         else
2159                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2160                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2161                 }
2162         }
2163         spin_unlock_irqrestore(&ieee->lock, flags);
2164 }
2165 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2166
2167 static void rtllib_process_action(struct rtllib_device *ieee,
2168                                   struct sk_buff *skb)
2169 {
2170         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2171         u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2172         u8 category = 0;
2173
2174         if (act == NULL) {
2175                 netdev_warn(ieee->dev,
2176                             "Error getting payload of action frame\n");
2177                 return;
2178         }
2179
2180         category = *act;
2181         act++;
2182         switch (category) {
2183         case ACT_CAT_BA:
2184                 switch (*act) {
2185                 case ACT_ADDBAREQ:
2186                         rtllib_rx_ADDBAReq(ieee, skb);
2187                         break;
2188                 case ACT_ADDBARSP:
2189                         rtllib_rx_ADDBARsp(ieee, skb);
2190                         break;
2191                 case ACT_DELBA:
2192                         rtllib_rx_DELBA(ieee, skb);
2193                         break;
2194                 }
2195                 break;
2196         default:
2197                 break;
2198         }
2199 }
2200
2201 static inline int
2202 rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2203                      struct rtllib_rx_stats *rx_stats)
2204 {
2205         u16 errcode;
2206         int aid;
2207         u8 *ies;
2208         struct rtllib_assoc_response_frame *assoc_resp;
2209         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2210         u16 frame_ctl = le16_to_cpu(header->frame_ctl);
2211
2212         netdev_dbg(ieee->dev, "received [RE]ASSOCIATION RESPONSE (%d)\n",
2213                    WLAN_FC_GET_STYPE(frame_ctl));
2214
2215         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2216              ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2217              (ieee->iw_mode == IW_MODE_INFRA)) {
2218                 errcode = assoc_parse(ieee, skb, &aid);
2219                 if (!errcode) {
2220                         struct rtllib_network *network =
2221                                  kzalloc(sizeof(struct rtllib_network),
2222                                  GFP_ATOMIC);
2223
2224                         if (!network)
2225                                 return 1;
2226                         ieee->state = RTLLIB_LINKED;
2227                         ieee->assoc_id = aid;
2228                         ieee->softmac_stats.rx_ass_ok++;
2229                         /* station support qos */
2230                         /* Let the register setting default with Legacy station */
2231                         assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2232                         if (ieee->current_network.qos_data.supported == 1) {
2233                                 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2234                                                         rx_stats->len - sizeof(*assoc_resp),
2235                                                         network, rx_stats)) {
2236                                         kfree(network);
2237                                         return 1;
2238                                 }
2239                                 memcpy(ieee->pHTInfo->PeerHTCapBuf,
2240                                        network->bssht.bd_ht_cap_buf,
2241                                        network->bssht.bd_ht_cap_len);
2242                                 memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2243                                        network->bssht.bd_ht_info_buf,
2244                                        network->bssht.bd_ht_info_len);
2245                                 if (ieee->handle_assoc_response != NULL)
2246                                         ieee->handle_assoc_response(ieee->dev,
2247                                                  (struct rtllib_assoc_response_frame *)header,
2248                                                  network);
2249                         }
2250                         kfree(network);
2251
2252                         kfree(ieee->assocresp_ies);
2253                         ieee->assocresp_ies = NULL;
2254                         ies = &(assoc_resp->info_element[0].id);
2255                         ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2256                         ieee->assocresp_ies = kmemdup(ies,
2257                                                       ieee->assocresp_ies_len,
2258                                                       GFP_ATOMIC);
2259                         if (!ieee->assocresp_ies)
2260                                 ieee->assocresp_ies_len = 0;
2261
2262                         rtllib_associate_complete(ieee);
2263                 } else {
2264                         /* aid could not been allocated */
2265                         ieee->softmac_stats.rx_ass_err++;
2266                         netdev_info(ieee->dev,
2267                                     "Association response status code 0x%x\n",
2268                                     errcode);
2269                         if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2270                                 schedule_delayed_work(
2271                                          &ieee->associate_procedure_wq, 0);
2272                         else
2273                                 rtllib_associate_abort(ieee);
2274                 }
2275         }
2276         return 0;
2277 }
2278
2279 static void rtllib_rx_auth_resp(struct rtllib_device *ieee, struct sk_buff *skb)
2280 {
2281         u16 errcode;
2282         u8 *challenge;
2283         int chlen = 0;
2284         bool bSupportNmode = true, bHalfSupportNmode = false;
2285
2286         errcode = auth_parse(ieee->dev, skb, &challenge, &chlen);
2287
2288         if (errcode) {
2289                 ieee->softmac_stats.rx_auth_rs_err++;
2290                 netdev_info(ieee->dev,
2291                             "Authentication response status code 0x%x",
2292                             errcode);
2293                 rtllib_associate_abort(ieee);
2294                 return;
2295         }
2296
2297         if (ieee->open_wep || !challenge) {
2298                 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2299                 ieee->softmac_stats.rx_auth_rs_ok++;
2300                 if (!(ieee->pHTInfo->IOTAction & HT_IOT_ACT_PURE_N_MODE)) {
2301                         if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2302                                 if (IsHTHalfNmodeAPs(ieee)) {
2303                                         bSupportNmode = true;
2304                                         bHalfSupportNmode = true;
2305                                 } else {
2306                                         bSupportNmode = false;
2307                                         bHalfSupportNmode = false;
2308                                 }
2309                         }
2310                 }
2311                 /* Dummy wirless mode setting to avoid encryption issue */
2312                 if (bSupportNmode) {
2313                         ieee->SetWirelessMode(ieee->dev,
2314                                               ieee->current_network.mode);
2315                 } else {
2316                         /*TODO*/
2317                         ieee->SetWirelessMode(ieee->dev, IEEE_G);
2318                 }
2319
2320                 if ((ieee->current_network.mode == IEEE_N_24G) &&
2321                     bHalfSupportNmode) {
2322                         netdev_info(ieee->dev, "======>enter half N mode\n");
2323                         ieee->bHalfWirelessN24GMode = true;
2324                 } else {
2325                         ieee->bHalfWirelessN24GMode = false;
2326                 }
2327                 rtllib_associate_step2(ieee);
2328         } else {
2329                 rtllib_auth_challenge(ieee, challenge,  chlen);
2330         }
2331 }
2332
2333 static inline int
2334 rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2335                struct rtllib_rx_stats *rx_stats)
2336 {
2337
2338         if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2339                 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2340                     (ieee->iw_mode == IW_MODE_INFRA)) {
2341                         netdev_dbg(ieee->dev,
2342                                    "Received authentication response");
2343                         rtllib_rx_auth_resp(ieee, skb);
2344                 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2345                         rtllib_rx_auth_rq(ieee, skb);
2346                 }
2347         }
2348         return 0;
2349 }
2350
2351 static inline int
2352 rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2353 {
2354         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2355         u16 frame_ctl;
2356
2357         if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2358                 return 0;
2359
2360         /* FIXME for now repeat all the association procedure
2361          * both for disassociation and deauthentication
2362          */
2363         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2364             ieee->state == RTLLIB_LINKED &&
2365             (ieee->iw_mode == IW_MODE_INFRA)) {
2366                 frame_ctl = le16_to_cpu(header->frame_ctl);
2367                 netdev_info(ieee->dev,
2368                             "==========>received disassoc/deauth(%x) frame, reason code:%x\n",
2369                             WLAN_FC_GET_STYPE(frame_ctl),
2370                             ((struct rtllib_disassoc *)skb->data)->reason);
2371                 ieee->state = RTLLIB_ASSOCIATING;
2372                 ieee->softmac_stats.reassoc++;
2373                 ieee->is_roaming = true;
2374                 ieee->LinkDetectInfo.bBusyTraffic = false;
2375                 rtllib_disassociate(ieee);
2376                 RemovePeerTS(ieee, header->addr2);
2377                 if (ieee->LedControlHandler != NULL)
2378                         ieee->LedControlHandler(ieee->dev,
2379                                                 LED_CTL_START_TO_LINK);
2380
2381                 if (!(ieee->rtllib_ap_sec_type(ieee) &
2382                     (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2383                         schedule_delayed_work(
2384                                        &ieee->associate_procedure_wq, 5);
2385         }
2386         return 0;
2387 }
2388
2389 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2390                                    struct sk_buff *skb,
2391                                    struct rtllib_rx_stats *rx_stats, u16 type,
2392                                    u16 stype)
2393 {
2394         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2395         u16 frame_ctl;
2396
2397         if (!ieee->proto_started)
2398                 return 0;
2399
2400         frame_ctl = le16_to_cpu(header->frame_ctl);
2401         switch (WLAN_FC_GET_STYPE(frame_ctl)) {
2402         case RTLLIB_STYPE_ASSOC_RESP:
2403         case RTLLIB_STYPE_REASSOC_RESP:
2404                 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2405                         return 1;
2406                 break;
2407         case RTLLIB_STYPE_ASSOC_REQ:
2408         case RTLLIB_STYPE_REASSOC_REQ:
2409                 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2410                      ieee->iw_mode == IW_MODE_MASTER)
2411                         rtllib_rx_assoc_rq(ieee, skb);
2412                 break;
2413         case RTLLIB_STYPE_AUTH:
2414                 rtllib_rx_auth(ieee, skb, rx_stats);
2415                 break;
2416         case RTLLIB_STYPE_DISASSOC:
2417         case RTLLIB_STYPE_DEAUTH:
2418                 rtllib_rx_deauth(ieee, skb);
2419                 break;
2420         case RTLLIB_STYPE_MANAGE_ACT:
2421                 rtllib_process_action(ieee, skb);
2422                 break;
2423         default:
2424                 return -1;
2425         }
2426         return 0;
2427 }
2428
2429 /* following are for a simpler TX queue management.
2430  * Instead of using netif_[stop/wake]_queue the driver
2431  * will use these two functions (plus a reset one), that
2432  * will internally use the kernel netif_* and takes
2433  * care of the ieee802.11 fragmentation.
2434  * So the driver receives a fragment per time and might
2435  * call the stop function when it wants to not
2436  * have enough room to TX an entire packet.
2437  * This might be useful if each fragment needs it's own
2438  * descriptor, thus just keep a total free memory > than
2439  * the max fragmentation threshold is not enough.. If the
2440  * ieee802.11 stack passed a TXB struct then you need
2441  * to keep N free descriptors where
2442  * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2443  * In this way you need just one and the 802.11 stack
2444  * will take care of buffering fragments and pass them to
2445  * the driver later, when it wakes the queue.
2446  */
2447 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2448 {
2449
2450         unsigned int queue_index = txb->queue_index;
2451         unsigned long flags;
2452         int  i;
2453         struct cb_desc *tcb_desc = NULL;
2454         unsigned long queue_len = 0;
2455
2456         spin_lock_irqsave(&ieee->lock, flags);
2457
2458         /* called with 2nd parm 0, no tx mgmt lock required */
2459         rtllib_sta_wakeup(ieee, 0);
2460
2461         /* update the tx status */
2462         tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2463                    MAX_DEV_ADDR_SIZE);
2464         if (tcb_desc->bMulticast)
2465                 ieee->stats.multicast++;
2466
2467         /* if xmit available, just xmit it immediately, else just insert it to
2468          * the wait queue
2469          */
2470         for (i = 0; i < txb->nr_frags; i++) {
2471                 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2472                 if ((queue_len  != 0) ||
2473                     (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2474                     (ieee->queue_stop)) {
2475                         /* insert the skb packet to the wait queue
2476                          * as for the completion function, it does not need
2477                          * to check it any more.
2478                          */
2479                         if (queue_len < 200)
2480                                 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2481                                                txb->fragments[i]);
2482                         else
2483                                 kfree_skb(txb->fragments[i]);
2484                 } else {
2485                         ieee->softmac_data_hard_start_xmit(
2486                                         txb->fragments[i],
2487                                         ieee->dev, ieee->rate);
2488                 }
2489         }
2490
2491         rtllib_txb_free(txb);
2492
2493         spin_unlock_irqrestore(&ieee->lock, flags);
2494
2495 }
2496
2497 void rtllib_reset_queue(struct rtllib_device *ieee)
2498 {
2499         unsigned long flags;
2500
2501         spin_lock_irqsave(&ieee->lock, flags);
2502         init_mgmt_queue(ieee);
2503         if (ieee->tx_pending.txb) {
2504                 rtllib_txb_free(ieee->tx_pending.txb);
2505                 ieee->tx_pending.txb = NULL;
2506         }
2507         ieee->queue_stop = 0;
2508         spin_unlock_irqrestore(&ieee->lock, flags);
2509
2510 }
2511 EXPORT_SYMBOL(rtllib_reset_queue);
2512
2513 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2514 {
2515         unsigned int i;
2516
2517         for (i = 0; i < ieee->dev->num_tx_queues; i++)
2518                 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2519
2520         netif_tx_stop_all_queues(ieee->dev);
2521 }
2522
2523 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2524 {
2525         netif_tx_wake_all_queues(ieee->dev);
2526 }
2527
2528 /* called in user context only */
2529 static void rtllib_start_master_bss(struct rtllib_device *ieee)
2530 {
2531         ieee->assoc_id = 1;
2532
2533         if (ieee->current_network.ssid_len == 0) {
2534                 strncpy(ieee->current_network.ssid,
2535                         RTLLIB_DEFAULT_TX_ESSID,
2536                         IW_ESSID_MAX_SIZE);
2537
2538                 ieee->current_network.ssid_len =
2539                                  strlen(RTLLIB_DEFAULT_TX_ESSID);
2540                 ieee->ssid_set = 1;
2541         }
2542
2543         ether_addr_copy(ieee->current_network.bssid, ieee->dev->dev_addr);
2544
2545         ieee->set_chan(ieee->dev, ieee->current_network.channel);
2546         ieee->state = RTLLIB_LINKED;
2547         ieee->link_change(ieee->dev);
2548         notify_wx_assoc_event(ieee);
2549
2550         if (ieee->data_hard_resume)
2551                 ieee->data_hard_resume(ieee->dev);
2552
2553         netif_carrier_on(ieee->dev);
2554 }
2555
2556 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2557 {
2558         /* reset hardware status */
2559         if (ieee->raw_tx) {
2560                 if (ieee->data_hard_resume)
2561                         ieee->data_hard_resume(ieee->dev);
2562
2563                 netif_carrier_on(ieee->dev);
2564         }
2565 }
2566
2567 static void rtllib_start_ibss_wq(void *data)
2568 {
2569         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2570                                      struct rtllib_device, start_ibss_wq);
2571         /* iwconfig mode ad-hoc will schedule this and return
2572          * on the other hand this will block further iwconfig SET
2573          * operations because of the wx_mutex hold.
2574          * Anyway some most set operations set a flag to speed-up
2575          * (abort) this wq (when syncro scanning) before sleeping
2576          * on the mutex
2577          */
2578         if (!ieee->proto_started) {
2579                 netdev_info(ieee->dev, "==========oh driver down return\n");
2580                 return;
2581         }
2582         mutex_lock(&ieee->wx_mutex);
2583
2584         if (ieee->current_network.ssid_len == 0) {
2585                 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2586                 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2587                 ieee->ssid_set = 1;
2588         }
2589
2590         ieee->state = RTLLIB_NOLINK;
2591         ieee->mode = IEEE_G;
2592         /* check if we have this cell in our network list */
2593         rtllib_softmac_check_all_nets(ieee);
2594
2595
2596         /* if not then the state is not linked. Maybe the user switched to
2597          * ad-hoc mode just after being in monitor mode, or just after
2598          * being very few time in managed mode (so the card have had no
2599          * time to scan all the chans..) or we have just run up the iface
2600          * after setting ad-hoc mode. So we have to give another try..
2601          * Here, in ibss mode, should be safe to do this without extra care
2602          * (in bss mode we had to make sure no-one tried to associate when
2603          * we had just checked the ieee->state and we was going to start the
2604          * scan) because in ibss mode the rtllib_new_net function, when
2605          * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2606          * so, at worst, we waste a bit of time to initiate an unneeded syncro
2607          * scan, that will stop at the first round because it sees the state
2608          * associated.
2609          */
2610         if (ieee->state == RTLLIB_NOLINK)
2611                 rtllib_start_scan_syncro(ieee, 0);
2612
2613         /* the network definitively is not here.. create a new cell */
2614         if (ieee->state == RTLLIB_NOLINK) {
2615                 netdev_info(ieee->dev, "creating new IBSS cell\n");
2616                 ieee->current_network.channel = ieee->bss_start_channel;
2617                 if (!ieee->wap_set)
2618                         eth_random_addr(ieee->current_network.bssid);
2619
2620                 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2621
2622                         ieee->current_network.rates_len = 4;
2623
2624                         ieee->current_network.rates[0] =
2625                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2626                         ieee->current_network.rates[1] =
2627                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2628                         ieee->current_network.rates[2] =
2629                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2630                         ieee->current_network.rates[3] =
2631                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2632
2633                 } else
2634                         ieee->current_network.rates_len = 0;
2635
2636                 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2637                         ieee->current_network.rates_ex_len = 8;
2638
2639                         ieee->current_network.rates_ex[0] =
2640                                                  RTLLIB_OFDM_RATE_6MB;
2641                         ieee->current_network.rates_ex[1] =
2642                                                  RTLLIB_OFDM_RATE_9MB;
2643                         ieee->current_network.rates_ex[2] =
2644                                                  RTLLIB_OFDM_RATE_12MB;
2645                         ieee->current_network.rates_ex[3] =
2646                                                  RTLLIB_OFDM_RATE_18MB;
2647                         ieee->current_network.rates_ex[4] =
2648                                                  RTLLIB_OFDM_RATE_24MB;
2649                         ieee->current_network.rates_ex[5] =
2650                                                  RTLLIB_OFDM_RATE_36MB;
2651                         ieee->current_network.rates_ex[6] =
2652                                                  RTLLIB_OFDM_RATE_48MB;
2653                         ieee->current_network.rates_ex[7] =
2654                                                  RTLLIB_OFDM_RATE_54MB;
2655
2656                         ieee->rate = 108;
2657                 } else {
2658                         ieee->current_network.rates_ex_len = 0;
2659                         ieee->rate = 22;
2660                 }
2661
2662                 ieee->current_network.qos_data.supported = 0;
2663                 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2664                 ieee->current_network.mode = ieee->mode;
2665                 ieee->current_network.atim_window = 0;
2666                 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2667         }
2668
2669         netdev_info(ieee->dev, "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2670         if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2671                 HTUseDefaultSetting(ieee);
2672         else
2673                 ieee->pHTInfo->bCurrentHTSupport = false;
2674
2675         ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2676                               (u8 *)(&ieee->state));
2677
2678         ieee->state = RTLLIB_LINKED;
2679         ieee->link_change(ieee->dev);
2680
2681         HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2682         if (ieee->LedControlHandler != NULL)
2683                 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2684
2685         rtllib_start_send_beacons(ieee);
2686
2687         notify_wx_assoc_event(ieee);
2688
2689         if (ieee->data_hard_resume)
2690                 ieee->data_hard_resume(ieee->dev);
2691
2692         netif_carrier_on(ieee->dev);
2693
2694         mutex_unlock(&ieee->wx_mutex);
2695 }
2696
2697 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2698 {
2699         schedule_delayed_work(&ieee->start_ibss_wq, msecs_to_jiffies(150));
2700 }
2701
2702 /* this is called only in user context, with wx_mutex held */
2703 static void rtllib_start_bss(struct rtllib_device *ieee)
2704 {
2705         unsigned long flags;
2706
2707         if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2708                 if (!ieee->global_domain)
2709                         return;
2710         }
2711         /* check if we have already found the net we
2712          * are interested in (if any).
2713          * if not (we are disassociated and we are not
2714          * in associating / authenticating phase) start the background scanning.
2715          */
2716         rtllib_softmac_check_all_nets(ieee);
2717
2718         /* ensure no-one start an associating process (thus setting
2719          * the ieee->state to rtllib_ASSOCIATING) while we
2720          * have just checked it and we are going to enable scan.
2721          * The rtllib_new_net function is always called with
2722          * lock held (from both rtllib_softmac_check_all_nets and
2723          * the rx path), so we cannot be in the middle of such function
2724          */
2725         spin_lock_irqsave(&ieee->lock, flags);
2726
2727         if (ieee->state == RTLLIB_NOLINK)
2728                 rtllib_start_scan(ieee);
2729         spin_unlock_irqrestore(&ieee->lock, flags);
2730 }
2731
2732 static void rtllib_link_change_wq(void *data)
2733 {
2734         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2735                                      struct rtllib_device, link_change_wq);
2736         ieee->link_change(ieee->dev);
2737 }
2738 /* called only in userspace context */
2739 void rtllib_disassociate(struct rtllib_device *ieee)
2740 {
2741         netif_carrier_off(ieee->dev);
2742         if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2743                 rtllib_reset_queue(ieee);
2744
2745         if (ieee->data_hard_stop)
2746                 ieee->data_hard_stop(ieee->dev);
2747         if (IS_DOT11D_ENABLE(ieee))
2748                 dot11d_reset(ieee);
2749         ieee->state = RTLLIB_NOLINK;
2750         ieee->is_set_key = false;
2751         ieee->wap_set = 0;
2752
2753         schedule_delayed_work(&ieee->link_change_wq, 0);
2754
2755         notify_wx_assoc_event(ieee);
2756 }
2757
2758 static void rtllib_associate_retry_wq(void *data)
2759 {
2760         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2761                                      struct rtllib_device, associate_retry_wq);
2762         unsigned long flags;
2763
2764         mutex_lock(&ieee->wx_mutex);
2765         if (!ieee->proto_started)
2766                 goto exit;
2767
2768         if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2769                 goto exit;
2770
2771         /* until we do not set the state to RTLLIB_NOLINK
2772          * there are no possibility to have someone else trying
2773          * to start an association procedure (we get here with
2774          * ieee->state = RTLLIB_ASSOCIATING).
2775          * When we set the state to RTLLIB_NOLINK it is possible
2776          * that the RX path run an attempt to associate, but
2777          * both rtllib_softmac_check_all_nets and the
2778          * RX path works with ieee->lock held so there are no
2779          * problems. If we are still disassociated then start a scan.
2780          * the lock here is necessary to ensure no one try to start
2781          * an association procedure when we have just checked the
2782          * state and we are going to start the scan.
2783          */
2784         ieee->beinretry = true;
2785         ieee->state = RTLLIB_NOLINK;
2786
2787         rtllib_softmac_check_all_nets(ieee);
2788
2789         spin_lock_irqsave(&ieee->lock, flags);
2790
2791         if (ieee->state == RTLLIB_NOLINK)
2792                 rtllib_start_scan(ieee);
2793         spin_unlock_irqrestore(&ieee->lock, flags);
2794
2795         ieee->beinretry = false;
2796 exit:
2797         mutex_unlock(&ieee->wx_mutex);
2798 }
2799
2800 static struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2801 {
2802         static const u8 broadcast_addr[] = {
2803                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2804         };
2805         struct sk_buff *skb;
2806         struct rtllib_probe_response *b;
2807
2808         skb = rtllib_probe_resp(ieee, broadcast_addr);
2809
2810         if (!skb)
2811                 return NULL;
2812
2813         b = (struct rtllib_probe_response *) skb->data;
2814         b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2815
2816         return skb;
2817
2818 }
2819
2820 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2821 {
2822         struct sk_buff *skb;
2823         struct rtllib_probe_response *b;
2824
2825         skb = rtllib_get_beacon_(ieee);
2826         if (!skb)
2827                 return NULL;
2828
2829         b = (struct rtllib_probe_response *) skb->data;
2830         b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2831
2832         if (ieee->seq_ctrl[0] == 0xFFF)
2833                 ieee->seq_ctrl[0] = 0;
2834         else
2835                 ieee->seq_ctrl[0]++;
2836
2837         return skb;
2838 }
2839 EXPORT_SYMBOL(rtllib_get_beacon);
2840
2841 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2842                                   u8 shutdown)
2843 {
2844         rtllib_stop_scan_syncro(ieee);
2845         mutex_lock(&ieee->wx_mutex);
2846         rtllib_stop_protocol(ieee, shutdown);
2847         mutex_unlock(&ieee->wx_mutex);
2848 }
2849 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2850
2851
2852 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2853 {
2854         if (!ieee->proto_started)
2855                 return;
2856
2857         if (shutdown) {
2858                 ieee->proto_started = 0;
2859                 ieee->proto_stoppping = 1;
2860                 if (ieee->rtllib_ips_leave != NULL)
2861                         ieee->rtllib_ips_leave(ieee->dev);
2862         }
2863
2864         rtllib_stop_send_beacons(ieee);
2865         del_timer_sync(&ieee->associate_timer);
2866         cancel_delayed_work_sync(&ieee->associate_retry_wq);
2867         cancel_delayed_work_sync(&ieee->start_ibss_wq);
2868         cancel_delayed_work_sync(&ieee->link_change_wq);
2869         rtllib_stop_scan(ieee);
2870
2871         if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2872                 ieee->state = RTLLIB_NOLINK;
2873
2874         if (ieee->state == RTLLIB_LINKED) {
2875                 if (ieee->iw_mode == IW_MODE_INFRA)
2876                         SendDisassociation(ieee, 1, WLAN_REASON_DEAUTH_LEAVING);
2877                 rtllib_disassociate(ieee);
2878         }
2879
2880         if (shutdown) {
2881                 RemoveAllTS(ieee);
2882                 ieee->proto_stoppping = 0;
2883         }
2884         kfree(ieee->assocreq_ies);
2885         ieee->assocreq_ies = NULL;
2886         ieee->assocreq_ies_len = 0;
2887         kfree(ieee->assocresp_ies);
2888         ieee->assocresp_ies = NULL;
2889         ieee->assocresp_ies_len = 0;
2890 }
2891
2892 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2893 {
2894         mutex_lock(&ieee->wx_mutex);
2895         rtllib_start_protocol(ieee);
2896         mutex_unlock(&ieee->wx_mutex);
2897 }
2898 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
2899
2900 void rtllib_start_protocol(struct rtllib_device *ieee)
2901 {
2902         short ch = 0;
2903         int i = 0;
2904
2905         rtllib_update_active_chan_map(ieee);
2906
2907         if (ieee->proto_started)
2908                 return;
2909
2910         ieee->proto_started = 1;
2911
2912         if (ieee->current_network.channel == 0) {
2913                 do {
2914                         ch++;
2915                         if (ch > MAX_CHANNEL_NUMBER)
2916                                 return; /* no channel found */
2917                 } while (!ieee->active_channel_map[ch]);
2918                 ieee->current_network.channel = ch;
2919         }
2920
2921         if (ieee->current_network.beacon_interval == 0)
2922                 ieee->current_network.beacon_interval = 100;
2923
2924         for (i = 0; i < 17; i++) {
2925                 ieee->last_rxseq_num[i] = -1;
2926                 ieee->last_rxfrag_num[i] = -1;
2927                 ieee->last_packet_time[i] = 0;
2928         }
2929
2930         if (ieee->UpdateBeaconInterruptHandler)
2931                 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
2932
2933         ieee->wmm_acm = 0;
2934         /* if the user set the MAC of the ad-hoc cell and then
2935          * switch to managed mode, shall we  make sure that association
2936          * attempts does not fail just because the user provide the essid
2937          * and the nic is still checking for the AP MAC ??
2938          */
2939         if (ieee->iw_mode == IW_MODE_INFRA) {
2940                 rtllib_start_bss(ieee);
2941         } else if (ieee->iw_mode == IW_MODE_ADHOC) {
2942                 if (ieee->UpdateBeaconInterruptHandler)
2943                         ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
2944
2945                 rtllib_start_ibss(ieee);
2946
2947         } else if (ieee->iw_mode == IW_MODE_MASTER) {
2948                 rtllib_start_master_bss(ieee);
2949         } else if (ieee->iw_mode == IW_MODE_MONITOR) {
2950                 rtllib_start_monitor_mode(ieee);
2951         }
2952 }
2953
2954 void rtllib_softmac_init(struct rtllib_device *ieee)
2955 {
2956         int i;
2957
2958         memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
2959
2960         ieee->state = RTLLIB_NOLINK;
2961         for (i = 0; i < 5; i++)
2962                 ieee->seq_ctrl[i] = 0;
2963         ieee->dot11d_info = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
2964         if (!ieee->dot11d_info)
2965                 netdev_err(ieee->dev, "Can't alloc memory for DOT11D\n");
2966         ieee->LinkDetectInfo.SlotIndex = 0;
2967         ieee->LinkDetectInfo.SlotNum = 2;
2968         ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
2969         ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
2970         ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
2971         ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
2972         ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
2973         ieee->bIsAggregateFrame = false;
2974         ieee->assoc_id = 0;
2975         ieee->queue_stop = 0;
2976         ieee->scanning_continue = 0;
2977         ieee->softmac_features = 0;
2978         ieee->wap_set = 0;
2979         ieee->ssid_set = 0;
2980         ieee->proto_started = 0;
2981         ieee->proto_stoppping = 0;
2982         ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
2983         ieee->rate = 22;
2984         ieee->ps = RTLLIB_PS_DISABLED;
2985         ieee->sta_sleep = LPS_IS_WAKE;
2986
2987         ieee->Regdot11HTOperationalRateSet[0] = 0xff;
2988         ieee->Regdot11HTOperationalRateSet[1] = 0xff;
2989         ieee->Regdot11HTOperationalRateSet[4] = 0x01;
2990
2991         ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
2992         ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
2993         ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
2994
2995         ieee->FirstIe_InScan = false;
2996         ieee->actscanning = false;
2997         ieee->beinretry = false;
2998         ieee->is_set_key = false;
2999         init_mgmt_queue(ieee);
3000
3001         ieee->tx_pending.txb = NULL;
3002
3003         timer_setup(&ieee->associate_timer, rtllib_associate_abort_cb, 0);
3004
3005         timer_setup(&ieee->beacon_timer, rtllib_send_beacon_cb, 0);
3006
3007         INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3008                               (void *)rtllib_link_change_wq, ieee);
3009         INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3010                               (void *)rtllib_start_ibss_wq, ieee);
3011         INIT_WORK_RSL(&ieee->associate_complete_wq,
3012                       (void *)rtllib_associate_complete_wq, ieee);
3013         INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3014                               (void *)rtllib_associate_procedure_wq, ieee);
3015         INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3016                               (void *)rtllib_softmac_scan_wq, ieee);
3017         INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3018                               (void *)rtllib_associate_retry_wq, ieee);
3019         INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3020                       ieee);
3021
3022         mutex_init(&ieee->wx_mutex);
3023         mutex_init(&ieee->scan_mutex);
3024         mutex_init(&ieee->ips_mutex);
3025
3026         spin_lock_init(&ieee->mgmt_tx_lock);
3027         spin_lock_init(&ieee->beacon_lock);
3028
3029         tasklet_setup(&ieee->ps_task, rtllib_sta_ps);
3030
3031 }
3032
3033 void rtllib_softmac_free(struct rtllib_device *ieee)
3034 {
3035         mutex_lock(&ieee->wx_mutex);
3036         kfree(ieee->dot11d_info);
3037         ieee->dot11d_info = NULL;
3038         del_timer_sync(&ieee->associate_timer);
3039
3040         cancel_delayed_work_sync(&ieee->associate_retry_wq);
3041         cancel_delayed_work_sync(&ieee->associate_procedure_wq);
3042         cancel_delayed_work_sync(&ieee->softmac_scan_wq);
3043         cancel_delayed_work_sync(&ieee->start_ibss_wq);
3044         cancel_delayed_work_sync(&ieee->hw_wakeup_wq);
3045         cancel_delayed_work_sync(&ieee->hw_sleep_wq);
3046         cancel_delayed_work_sync(&ieee->link_change_wq);
3047         cancel_work_sync(&ieee->associate_complete_wq);
3048         cancel_work_sync(&ieee->ips_leave_wq);
3049         cancel_work_sync(&ieee->wx_sync_scan_wq);
3050         mutex_unlock(&ieee->wx_mutex);
3051         tasklet_kill(&ieee->ps_task);
3052 }
3053
3054 static inline struct sk_buff *
3055 rtllib_disauth_skb(struct rtllib_network *beacon,
3056                    struct rtllib_device *ieee, u16 asRsn)
3057 {
3058         struct sk_buff *skb;
3059         struct rtllib_disauth *disauth;
3060         int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3061
3062         skb = dev_alloc_skb(len);
3063         if (!skb)
3064                 return NULL;
3065
3066         skb_reserve(skb, ieee->tx_headroom);
3067
3068         disauth = skb_put(skb, sizeof(struct rtllib_disauth));
3069         disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3070         disauth->header.duration_id = 0;
3071
3072         ether_addr_copy(disauth->header.addr1, beacon->bssid);
3073         ether_addr_copy(disauth->header.addr2, ieee->dev->dev_addr);
3074         ether_addr_copy(disauth->header.addr3, beacon->bssid);
3075
3076         disauth->reason = cpu_to_le16(asRsn);
3077         return skb;
3078 }
3079
3080 static inline struct sk_buff *
3081 rtllib_disassociate_skb(struct rtllib_network *beacon,
3082                         struct rtllib_device *ieee, u16 asRsn)
3083 {
3084         struct sk_buff *skb;
3085         struct rtllib_disassoc *disass;
3086         int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3087
3088         skb = dev_alloc_skb(len);
3089
3090         if (!skb)
3091                 return NULL;
3092
3093         skb_reserve(skb, ieee->tx_headroom);
3094
3095         disass = skb_put(skb, sizeof(struct rtllib_disassoc));
3096         disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3097         disass->header.duration_id = 0;
3098
3099         ether_addr_copy(disass->header.addr1, beacon->bssid);
3100         ether_addr_copy(disass->header.addr2, ieee->dev->dev_addr);
3101         ether_addr_copy(disass->header.addr3, beacon->bssid);
3102
3103         disass->reason = cpu_to_le16(asRsn);
3104         return skb;
3105 }
3106
3107 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3108 {
3109         struct rtllib_network *beacon = &ieee->current_network;
3110         struct sk_buff *skb;
3111
3112         if (deauth)
3113                 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3114         else
3115                 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3116
3117         if (skb)
3118                 softmac_mgmt_xmit(skb, ieee);
3119 }
3120
3121 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3122 {
3123         static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3124         static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3125         int wpa_ie_len = ieee->wpa_ie_len;
3126         struct lib80211_crypt_data *crypt;
3127         int encrypt;
3128
3129         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3130         encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3131                   || (ieee->host_encrypt && crypt && crypt->ops &&
3132                   (strcmp(crypt->ops->name, "R-WEP") == 0));
3133
3134         /* simply judge  */
3135         if (encrypt && (wpa_ie_len == 0)) {
3136                 return SEC_ALG_WEP;
3137         } else if ((wpa_ie_len != 0)) {
3138                 if (((ieee->wpa_ie[0] == 0xdd) &&
3139                     (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3140                     ((ieee->wpa_ie[0] == 0x30) &&
3141                     (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3142                         return SEC_ALG_CCMP;
3143                 else
3144                         return SEC_ALG_TKIP;
3145         } else {
3146                 return SEC_ALG_NONE;
3147         }
3148 }
3149
3150 static void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3151 {
3152         u8      OpMode;
3153         u8      i;
3154         bool    bFilterOutNonAssociatedBSSID = false;
3155
3156         rtllib->state = RTLLIB_NOLINK;
3157
3158         for (i = 0; i < 6; i++)
3159                 rtllib->current_network.bssid[i] = 0x55;
3160
3161         rtllib->OpMode = RT_OP_MODE_NO_LINK;
3162         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3163                                 rtllib->current_network.bssid);
3164         OpMode = RT_OP_MODE_NO_LINK;
3165         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3166         rtllib_stop_send_beacons(rtllib);
3167
3168         bFilterOutNonAssociatedBSSID = false;
3169         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3170                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3171         notify_wx_assoc_event(rtllib);
3172
3173 }
3174
3175 static void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib,
3176                                            u8 *asSta, u8 asRsn)
3177 {
3178         u8 i;
3179         u8      OpMode;
3180
3181         RemovePeerTS(rtllib, asSta);
3182
3183         if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) {
3184                 rtllib->state = RTLLIB_NOLINK;
3185
3186                 for (i = 0; i < 6; i++)
3187                         rtllib->current_network.bssid[i] = 0x22;
3188                 OpMode = RT_OP_MODE_NO_LINK;
3189                 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3190                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3191                                         (u8 *)(&OpMode));
3192                 rtllib_disassociate(rtllib);
3193
3194                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3195                                         rtllib->current_network.bssid);
3196
3197         }
3198
3199 }
3200
3201 static void
3202 rtllib_MgntDisconnectAP(
3203         struct rtllib_device *rtllib,
3204         u8 asRsn
3205 )
3206 {
3207         bool bFilterOutNonAssociatedBSSID = false;
3208
3209         bFilterOutNonAssociatedBSSID = false;
3210         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3211                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3212         rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3213                                        asRsn);
3214
3215         rtllib->state = RTLLIB_NOLINK;
3216 }
3217
3218 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3219 {
3220         if (rtllib->ps != RTLLIB_PS_DISABLED)
3221                 rtllib->sta_wake_up(rtllib->dev);
3222
3223         if (rtllib->state == RTLLIB_LINKED) {
3224                 if (rtllib->iw_mode == IW_MODE_ADHOC)
3225                         rtllib_MgntDisconnectIBSS(rtllib);
3226                 if (rtllib->iw_mode == IW_MODE_INFRA)
3227                         rtllib_MgntDisconnectAP(rtllib, asRsn);
3228
3229         }
3230
3231         return true;
3232 }
3233 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3234
3235 void notify_wx_assoc_event(struct rtllib_device *ieee)
3236 {
3237         union iwreq_data wrqu;
3238
3239         if (ieee->cannot_notify)
3240                 return;
3241
3242         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3243         if (ieee->state == RTLLIB_LINKED)
3244                 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3245                        ETH_ALEN);
3246         else {
3247
3248                 netdev_info(ieee->dev, "%s(): Tell user space disconnected\n",
3249                             __func__);
3250                 eth_zero_addr(wrqu.ap_addr.sa_data);
3251         }
3252         wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3253 }
3254 EXPORT_SYMBOL(notify_wx_assoc_event);