drivers/staging/rtl8192e/rtllib_softmac.c

   1 /* IEEE 802.11 SoftMAC layer
   2  * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com>
   3  *
   4  * Mostly extracted from the rtl8180-sa2400 driver for the
   5  * in-kernel generic ieee802.11 stack.
   6  *
   7  * Few lines might be stolen from other part of the rtllib
   8  * stack. Copyright who own it's copyright
   9  *
  10  * WPA code stolen from the ipw2200 driver.
  11  * Copyright who own it's copyright.
  12  *
  13  * released under the GPL
  14  */
  15
  16
  17 #include "rtllib.h"
  18
  19 #include <linux/random.h>
  20 #include <linux/delay.h>
  21 #include <linux/uaccess.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/ieee80211.h>
  24 #include "dot11d.h"
  25
  26 static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl);
  27
  28
  29 static short rtllib_is_54g(struct rtllib_network *net)
  30 {
  31         return (net->rates_ex_len > 0) || (net->rates_len > 4);
  32 }
  33
  34 /* returns the total length needed for placing the RATE MFIE
  35  * tag and the EXTENDED RATE MFIE tag if needed.
  36  * It encludes two bytes per tag for the tag itself and its len
  37  */
  38 static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
  39 {
  40         unsigned int rate_len = 0;
  41
  42         if (ieee->modulation & RTLLIB_CCK_MODULATION)
  43                 rate_len = RTLLIB_CCK_RATE_LEN + 2;
  44
  45         if (ieee->modulation & RTLLIB_OFDM_MODULATION)
  46
  47                 rate_len += RTLLIB_OFDM_RATE_LEN + 2;
  48
  49         return rate_len;
  50 }
  51
  52 /* place the MFIE rate, tag to the memory (double) pointed.
  53  * Then it updates the pointer so that
  54  * it points after the new MFIE tag added.
  55  */
  56 static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
  57 {
  58         u8 *tag = *tag_p;
  59
  60         if (ieee->modulation & RTLLIB_CCK_MODULATION) {
  61                 *tag++ = MFIE_TYPE_RATES;
  62                 *tag++ = 4;
  63                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
  64                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
  65                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
  66                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
  67         }
  68
  69         /* We may add an option for custom rates that specific HW
  70          * might support
  71          */
  72         *tag_p = tag;
  73 }
  74
  75 static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p)
  76 {
  77         u8 *tag = *tag_p;
  78
  79         if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
  80                 *tag++ = MFIE_TYPE_RATES_EX;
  81                 *tag++ = 8;
  82                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB;
  83                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB;
  84                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB;
  85                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB;
  86                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB;
  87                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB;
  88                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB;
  89                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB;
  90         }
  91         /* We may add an option for custom rates that specific HW might
  92          * support
  93          */
  94         *tag_p = tag;
  95 }
  96
  97 static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
  98 {
  99         u8 *tag = *tag_p;
 100
 101         *tag++ = MFIE_TYPE_GENERIC;
 102         *tag++ = 7;
 103         *tag++ = 0x00;
 104         *tag++ = 0x50;
 105         *tag++ = 0xf2;
 106         *tag++ = 0x02;
 107         *tag++ = 0x00;
 108         *tag++ = 0x01;
 109         *tag++ = MAX_SP_Len;
 110         *tag_p = tag;
 111 }
 112
 113 static void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
 114 {
 115         u8 *tag = *tag_p;
 116
 117         *tag++ = MFIE_TYPE_GENERIC;
 118         *tag++ = 7;
 119         *tag++ = 0x00;
 120         *tag++ = 0xe0;
 121         *tag++ = 0x4c;
 122         *tag++ = 0x01;
 123         *tag++ = 0x02;
 124         *tag++ = 0x11;
 125         *tag++ = 0x00;
 126
 127         *tag_p = tag;
 128         netdev_alert(ieee->dev, "This is enable turbo mode IE process\n");
 129 }
 130
 131 static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
 132 {
 133         int nh;
 134
 135         nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
 136
 137 /* if the queue is full but we have newer frames then
 138  * just overwrites the oldest.
 139  *
 140  * if (nh == ieee->mgmt_queue_tail)
 141  *              return -1;
 142  */
 143         ieee->mgmt_queue_head = nh;
 144         ieee->mgmt_queue_ring[nh] = skb;
 145
 146 }
 147
 148 static void init_mgmt_queue(struct rtllib_device *ieee)
 149 {
 150         ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
 151 }
 152
 153
 154 u8
 155 MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
 156 {
 157         u16     i;
 158         u8      QueryRate = 0;
 159         u8      BasicRate;
 160
 161
 162         for (i = 0; i < ieee->current_network.rates_len; i++) {
 163                 BasicRate = ieee->current_network.rates[i]&0x7F;
 164                 if (!rtllib_is_cck_rate(BasicRate)) {
 165                         if (QueryRate == 0) {
 166                                 QueryRate = BasicRate;
 167                         } else {
 168                                 if (BasicRate < QueryRate)
 169                                         QueryRate = BasicRate;
 170                         }
 171                 }
 172         }
 173
 174         if (QueryRate == 0) {
 175                 QueryRate = 12;
 176                 netdev_info(ieee->dev, "No BasicRate found!!\n");
 177         }
 178         return QueryRate;
 179 }
 180
 181 static u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
 182 {
 183         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 184         u8 rate;
 185
 186         if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
 187                 rate = 0x0c;
 188         else
 189                 rate = ieee->basic_rate & 0x7f;
 190
 191         if (rate == 0) {
 192                 if (ieee->mode == IEEE_A ||
 193                    ieee->mode == IEEE_N_5G ||
 194                    (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
 195                         rate = 0x0c;
 196                 else
 197                         rate = 0x02;
 198         }
 199
 200         return rate;
 201 }
 202
 203 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
 204 {
 205         unsigned long flags;
 206         short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
 207         struct rtllib_hdr_3addr  *header =
 208                 (struct rtllib_hdr_3addr  *) skb->data;
 209
 210         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
 211
 212         spin_lock_irqsave(&ieee->lock, flags);
 213
 214         /* called with 2nd param 0, no mgmt lock required */
 215         rtllib_sta_wakeup(ieee, 0);
 216
 217         if (le16_to_cpu(header->frame_ctl) == RTLLIB_STYPE_BEACON)
 218                 tcb_desc->queue_index = BEACON_QUEUE;
 219         else
 220                 tcb_desc->queue_index = MGNT_QUEUE;
 221
 222         if (ieee->disable_mgnt_queue)
 223                 tcb_desc->queue_index = HIGH_QUEUE;
 224
 225         tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
 226         tcb_desc->RATRIndex = 7;
 227         tcb_desc->bTxDisableRateFallBack = 1;
 228         tcb_desc->bTxUseDriverAssingedRate = 1;
 229         if (single) {
 230                 if (ieee->queue_stop) {
 231                         enqueue_mgmt(ieee, skb);
 232                 } else {
 233                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
 234
 235                         if (ieee->seq_ctrl[0] == 0xFFF)
 236                                 ieee->seq_ctrl[0] = 0;
 237                         else
 238                                 ieee->seq_ctrl[0]++;
 239
 240                         /* avoid watchdog triggers */
 241                         ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
 242                                                            ieee->basic_rate);
 243                 }
 244
 245                 spin_unlock_irqrestore(&ieee->lock, flags);
 246         } else {
 247                 spin_unlock_irqrestore(&ieee->lock, flags);
 248                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
 249
 250                 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 251
 252                 if (ieee->seq_ctrl[0] == 0xFFF)
 253                         ieee->seq_ctrl[0] = 0;
 254                 else
 255                         ieee->seq_ctrl[0]++;
 256
 257                 /* check whether the managed packet queued greater than 5 */
 258                 if (!ieee->check_nic_enough_desc(ieee->dev,
 259                                                  tcb_desc->queue_index) ||
 260                     skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) ||
 261                     ieee->queue_stop) {
 262                         /* insert the skb packet to the management queue
 263                          *
 264                          * as for the completion function, it does not need
 265                          * to check it any more.
 266                          */
 267                         netdev_info(ieee->dev,
 268                                "%s():insert to waitqueue, queue_index:%d!\n",
 269                                __func__, tcb_desc->queue_index);
 270                         skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
 271                                        skb);
 272                 } else {
 273                         ieee->softmac_hard_start_xmit(skb, ieee->dev);
 274                 }
 275                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
 276         }
 277 }
 278
 279 static inline void
 280 softmac_ps_mgmt_xmit(struct sk_buff *skb,
 281                      struct rtllib_device *ieee)
 282 {
 283         short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
 284         struct rtllib_hdr_3addr  *header =
 285                 (struct rtllib_hdr_3addr  *) skb->data;
 286         u16 fc, type, stype;
 287         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
 288
 289         fc = le16_to_cpu(header->frame_ctl);
 290         type = WLAN_FC_GET_TYPE(fc);
 291         stype = WLAN_FC_GET_STYPE(fc);
 292
 293
 294         if (stype != RTLLIB_STYPE_PSPOLL)
 295                 tcb_desc->queue_index = MGNT_QUEUE;
 296         else
 297                 tcb_desc->queue_index = HIGH_QUEUE;
 298
 299         if (ieee->disable_mgnt_queue)
 300                 tcb_desc->queue_index = HIGH_QUEUE;
 301
 302
 303         tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
 304         tcb_desc->RATRIndex = 7;
 305         tcb_desc->bTxDisableRateFallBack = 1;
 306         tcb_desc->bTxUseDriverAssingedRate = 1;
 307         if (single) {
 308                 if (type != RTLLIB_FTYPE_CTL) {
 309                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 310
 311                         if (ieee->seq_ctrl[0] == 0xFFF)
 312                                 ieee->seq_ctrl[0] = 0;
 313                         else
 314                                 ieee->seq_ctrl[0]++;
 315
 316                 }
 317                 /* avoid watchdog triggers */
 318                 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
 319                                                    ieee->basic_rate);
 320
 321         } else {
 322                 if (type != RTLLIB_FTYPE_CTL) {
 323                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 324
 325                         if (ieee->seq_ctrl[0] == 0xFFF)
 326                                 ieee->seq_ctrl[0] = 0;
 327                         else
 328                                 ieee->seq_ctrl[0]++;
 329                 }
 330                 ieee->softmac_hard_start_xmit(skb, ieee->dev);
 331
 332         }
 333 }
 334
 335 static inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
 336 {
 337         unsigned int len, rate_len;
 338         u8 *tag;
 339         struct sk_buff *skb;
 340         struct rtllib_probe_request *req;
 341
 342         len = ieee->current_network.ssid_len;
 343
 344         rate_len = rtllib_MFIE_rate_len(ieee);
 345
 346         skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
 347                             2 + len + rate_len + ieee->tx_headroom);
 348
 349         if (!skb)
 350                 return NULL;
 351
 352         skb_reserve(skb, ieee->tx_headroom);
 353
 354         req = (struct rtllib_probe_request *) skb_put(skb,
 355               sizeof(struct rtllib_probe_request));
 356         req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
 357         req->header.duration_id = 0;
 358
 359         eth_broadcast_addr(req->header.addr1);
 360         ether_addr_copy(req->header.addr2, ieee->dev->dev_addr);
 361         eth_broadcast_addr(req->header.addr3);
 362
 363         tag = (u8 *) skb_put(skb, len + 2 + rate_len);
 364
 365         *tag++ = MFIE_TYPE_SSID;
 366         *tag++ = len;
 367         memcpy(tag, ieee->current_network.ssid, len);
 368         tag += len;
 369
 370         rtllib_MFIE_Brate(ieee, &tag);
 371         rtllib_MFIE_Grate(ieee, &tag);
 372
 373         return skb;
 374 }
 375
 376 static struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
 377
 378 static void rtllib_send_beacon(struct rtllib_device *ieee)
 379 {
 380         struct sk_buff *skb;
 381
 382         if (!ieee->ieee_up)
 383                 return;
 384         skb = rtllib_get_beacon_(ieee);
 385
 386         if (skb) {
 387                 softmac_mgmt_xmit(skb, ieee);
 388                 ieee->softmac_stats.tx_beacons++;
 389         }
 390
 391         if (ieee->beacon_txing && ieee->ieee_up)
 392                 mod_timer(&ieee->beacon_timer, jiffies +
 393                           (msecs_to_jiffies(ieee->current_network.beacon_interval - 5)));
 394 }
 395
 396
 397 static void rtllib_send_beacon_cb(unsigned long _ieee)
 398 {
 399         struct rtllib_device *ieee =
 400                 (struct rtllib_device *) _ieee;
 401         unsigned long flags;
 402
 403         spin_lock_irqsave(&ieee->beacon_lock, flags);
 404         rtllib_send_beacon(ieee);
 405         spin_unlock_irqrestore(&ieee->beacon_lock, flags);
 406 }
 407
 408 /* Enables network monitor mode, all rx packets will be received. */
 409 void rtllib_EnableNetMonitorMode(struct net_device *dev,
 410                 bool bInitState)
 411 {
 412         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 413
 414         netdev_info(dev, "========>Enter Monitor Mode\n");
 415
 416         ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
 417 }
 418
 419
 420 /* Disables network monitor mode. Only packets destinated to
 421  * us will be received.
 422  */
 423 void rtllib_DisableNetMonitorMode(struct net_device *dev,
 424                 bool bInitState)
 425 {
 426         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 427
 428         netdev_info(dev, "========>Exit Monitor Mode\n");
 429
 430         ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
 431 }
 432
 433
 434 /* Enables the specialized promiscuous mode required by Intel.
 435  * In this mode, Intel intends to hear traffics from/to other STAs in the
 436  * same BSS. Therefore we don't have to disable checking BSSID and we only need
 437  * to allow all dest. BUT: if we enable checking BSSID then we can't recv
 438  * packets from other STA.
 439  */
 440 void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
 441                 bool bInitState)
 442 {
 443         bool bFilterOutNonAssociatedBSSID = false;
 444
 445         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 446
 447         netdev_info(dev, "========>Enter Intel Promiscuous Mode\n");
 448
 449         ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
 450         ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
 451                              (u8 *)&bFilterOutNonAssociatedBSSID);
 452
 453         ieee->bNetPromiscuousMode = true;
 454 }
 455 EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode);
 456
 457
 458 /* Disables the specialized promiscuous mode required by Intel.
 459  * See MgntEnableIntelPromiscuousMode for detail.
 460  */
 461 void rtllib_DisableIntelPromiscuousMode(struct net_device *dev,
 462                 bool bInitState)
 463 {
 464         bool bFilterOutNonAssociatedBSSID = true;
 465
 466         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 467
 468         netdev_info(dev, "========>Exit Intel Promiscuous Mode\n");
 469
 470         ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
 471         ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
 472                              (u8 *)&bFilterOutNonAssociatedBSSID);
 473
 474         ieee->bNetPromiscuousMode = false;
 475 }
 476 EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode);
 477
 478 static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh)
 479 {
 480         struct sk_buff *skb;
 481
 482         skb = rtllib_probe_req(ieee);
 483         if (skb) {
 484                 softmac_mgmt_xmit(skb, ieee);
 485                 ieee->softmac_stats.tx_probe_rq++;
 486         }
 487 }
 488
 489
 490 static void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh)
 491 {
 492         if (ieee->active_scan && (ieee->softmac_features &
 493             IEEE_SOFTMAC_PROBERQ)) {
 494                 rtllib_send_probe(ieee, 0);
 495                 rtllib_send_probe(ieee, 0);
 496         }
 497 }
 498
 499 static void rtllib_update_active_chan_map(struct rtllib_device *ieee)
 500 {
 501         memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map,
 502                MAX_CHANNEL_NUMBER+1);
 503 }
 504
 505 /* this performs syncro scan blocking the caller until all channels
 506  * in the allowed channel map has been checked.
 507  */
 508 static void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
 509 {
 510         union iwreq_data wrqu;
 511         short ch = 0;
 512
 513         rtllib_update_active_chan_map(ieee);
 514
 515         ieee->be_scan_inprogress = true;
 516
 517         mutex_lock(&ieee->scan_mutex);
 518
 519         while (1) {
 520                 do {
 521                         ch++;
 522                         if (ch > MAX_CHANNEL_NUMBER)
 523                                 goto out; /* scan completed */
 524                 } while (!ieee->active_channel_map[ch]);
 525
 526                 /* this function can be called in two situations
 527                  * 1- We have switched to ad-hoc mode and we are
 528                  *    performing a complete syncro scan before conclude
 529                  *    there are no interesting cell and to create a
 530                  *    new one. In this case the link state is
 531                  *    RTLLIB_NOLINK until we found an interesting cell.
 532                  *    If so the ieee8021_new_net, called by the RX path
 533                  *    will set the state to RTLLIB_LINKED, so we stop
 534                  *    scanning
 535                  * 2- We are linked and the root uses run iwlist scan.
 536                  *    So we switch to RTLLIB_LINKED_SCANNING to remember
 537                  *    that we are still logically linked (not interested in
 538                  *    new network events, despite for updating the net list,
 539                  *    but we are temporarly 'unlinked' as the driver shall
 540                  *    not filter RX frames and the channel is changing.
 541                  * So the only situation in which are interested is to check
 542                  * if the state become LINKED because of the #1 situation
 543                  */
 544
 545                 if (ieee->state == RTLLIB_LINKED)
 546                         goto out;
 547                 if (ieee->sync_scan_hurryup) {
 548                         netdev_info(ieee->dev,
 549                                     "============>sync_scan_hurryup out\n");
 550                         goto out;
 551                 }
 552
 553                 ieee->set_chan(ieee->dev, ch);
 554                 if (ieee->active_channel_map[ch] == 1)
 555                         rtllib_send_probe_requests(ieee, 0);
 556
 557                 /* this prevent excessive time wait when we
 558                  * need to wait for a syncro scan to end..
 559                  */
 560                 msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME);
 561         }
 562 out:
 563         ieee->actscanning = false;
 564         ieee->sync_scan_hurryup = 0;
 565
 566         if (ieee->state >= RTLLIB_LINKED) {
 567                 if (IS_DOT11D_ENABLE(ieee))
 568                         DOT11D_ScanComplete(ieee);
 569         }
 570         mutex_unlock(&ieee->scan_mutex);
 571
 572         ieee->be_scan_inprogress = false;
 573
 574         memset(&wrqu, 0, sizeof(wrqu));
 575         wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
 576 }
 577
 578 static void rtllib_softmac_scan_wq(void *data)
 579 {
 580         struct rtllib_device *ieee = container_of_dwork_rsl(data,
 581                                      struct rtllib_device, softmac_scan_wq);
 582         u8 last_channel = ieee->current_network.channel;
 583
 584         rtllib_update_active_chan_map(ieee);
 585
 586         if (!ieee->ieee_up)
 587                 return;
 588         if (rtllib_act_scanning(ieee, true))
 589                 return;
 590
 591         mutex_lock(&ieee->scan_mutex);
 592
 593         if (ieee->eRFPowerState == eRfOff) {
 594                 netdev_info(ieee->dev,
 595                             "======>%s():rf state is eRfOff, return\n",
 596                             __func__);
 597                 goto out1;
 598         }
 599
 600         do {
 601                 ieee->current_network.channel =
 602                         (ieee->current_network.channel + 1) %
 603                         MAX_CHANNEL_NUMBER;
 604                 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) {
 605                         if (!ieee->active_channel_map[ieee->current_network.channel])
 606                                 ieee->current_network.channel = 6;
 607                         goto out; /* no good chans */
 608                 }
 609         } while (!ieee->active_channel_map[ieee->current_network.channel]);
 610
 611         if (ieee->scanning_continue == 0)
 612                 goto out;
 613
 614         ieee->set_chan(ieee->dev, ieee->current_network.channel);
 615
 616         if (ieee->active_channel_map[ieee->current_network.channel] == 1)
 617                 rtllib_send_probe_requests(ieee, 0);
 618
 619         schedule_delayed_work(&ieee->softmac_scan_wq,
 620                               msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME));
 621
 622         mutex_unlock(&ieee->scan_mutex);
 623         return;
 624
 625 out:
 626         if (IS_DOT11D_ENABLE(ieee))
 627                 DOT11D_ScanComplete(ieee);
 628         ieee->current_network.channel = last_channel;
 629
 630 out1:
 631         ieee->actscanning = false;
 632         ieee->scan_watch_dog = 0;
 633         ieee->scanning_continue = 0;
 634         mutex_unlock(&ieee->scan_mutex);
 635 }
 636
 637
 638
 639 static void rtllib_beacons_start(struct rtllib_device *ieee)
 640 {
 641         unsigned long flags;
 642
 643         spin_lock_irqsave(&ieee->beacon_lock, flags);
 644
 645         ieee->beacon_txing = 1;
 646         rtllib_send_beacon(ieee);
 647
 648         spin_unlock_irqrestore(&ieee->beacon_lock, flags);
 649 }
 650
 651 static void rtllib_beacons_stop(struct rtllib_device *ieee)
 652 {
 653         unsigned long flags;
 654
 655         spin_lock_irqsave(&ieee->beacon_lock, flags);
 656
 657         ieee->beacon_txing = 0;
 658         del_timer_sync(&ieee->beacon_timer);
 659
 660         spin_unlock_irqrestore(&ieee->beacon_lock, flags);
 661
 662 }
 663
 664
 665 void rtllib_stop_send_beacons(struct rtllib_device *ieee)
 666 {
 667         if (ieee->stop_send_beacons)
 668                 ieee->stop_send_beacons(ieee->dev);
 669         if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
 670                 rtllib_beacons_stop(ieee);
 671 }
 672 EXPORT_SYMBOL(rtllib_stop_send_beacons);
 673
 674
 675 void rtllib_start_send_beacons(struct rtllib_device *ieee)
 676 {
 677         if (ieee->start_send_beacons)
 678                 ieee->start_send_beacons(ieee->dev);
 679         if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
 680                 rtllib_beacons_start(ieee);
 681 }
 682 EXPORT_SYMBOL(rtllib_start_send_beacons);
 683
 684
 685 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
 686 {
 687         mutex_lock(&ieee->scan_mutex);
 688         ieee->scan_watch_dog = 0;
 689         if (ieee->scanning_continue == 1) {
 690                 ieee->scanning_continue = 0;
 691                 ieee->actscanning = false;
 692
 693                 cancel_delayed_work_sync(&ieee->softmac_scan_wq);
 694         }
 695
 696         mutex_unlock(&ieee->scan_mutex);
 697 }
 698
 699 void rtllib_stop_scan(struct rtllib_device *ieee)
 700 {
 701         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 702                 rtllib_softmac_stop_scan(ieee);
 703         } else {
 704                 if (ieee->rtllib_stop_hw_scan)
 705                         ieee->rtllib_stop_hw_scan(ieee->dev);
 706         }
 707 }
 708 EXPORT_SYMBOL(rtllib_stop_scan);
 709
 710 void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
 711 {
 712         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 713                 ieee->sync_scan_hurryup = 1;
 714         } else {
 715                 if (ieee->rtllib_stop_hw_scan)
 716                         ieee->rtllib_stop_hw_scan(ieee->dev);
 717         }
 718 }
 719 EXPORT_SYMBOL(rtllib_stop_scan_syncro);
 720
 721 bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
 722 {
 723         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 724                 if (sync_scan)
 725                         return ieee->be_scan_inprogress;
 726                 else
 727                         return ieee->actscanning || ieee->be_scan_inprogress;
 728         } else {
 729                 return test_bit(STATUS_SCANNING, &ieee->status);
 730         }
 731 }
 732 EXPORT_SYMBOL(rtllib_act_scanning);
 733
 734 /* called with ieee->lock held */
 735 static void rtllib_start_scan(struct rtllib_device *ieee)
 736 {
 737         RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
 738         if (ieee->rtllib_ips_leave_wq != NULL)
 739                 ieee->rtllib_ips_leave_wq(ieee->dev);
 740
 741         if (IS_DOT11D_ENABLE(ieee)) {
 742                 if (IS_COUNTRY_IE_VALID(ieee))
 743                         RESET_CIE_WATCHDOG(ieee);
 744         }
 745         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 746                 if (ieee->scanning_continue == 0) {
 747                         ieee->actscanning = true;
 748                         ieee->scanning_continue = 1;
 749                         schedule_delayed_work(&ieee->softmac_scan_wq, 0);
 750                 }
 751         } else {
 752                 if (ieee->rtllib_start_hw_scan)
 753                         ieee->rtllib_start_hw_scan(ieee->dev);
 754         }
 755 }
 756
 757 /* called with wx_mutex held */
 758 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
 759 {
 760         if (IS_DOT11D_ENABLE(ieee)) {
 761                 if (IS_COUNTRY_IE_VALID(ieee))
 762                         RESET_CIE_WATCHDOG(ieee);
 763         }
 764         ieee->sync_scan_hurryup = 0;
 765         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 766                 rtllib_softmac_scan_syncro(ieee, is_mesh);
 767         } else {
 768                 if (ieee->rtllib_start_hw_scan)
 769                         ieee->rtllib_start_hw_scan(ieee->dev);
 770         }
 771 }
 772 EXPORT_SYMBOL(rtllib_start_scan_syncro);
 773
 774 static inline struct sk_buff *
 775 rtllib_authentication_req(struct rtllib_network *beacon,
 776                           struct rtllib_device *ieee,
 777                           int challengelen, u8 *daddr)
 778 {
 779         struct sk_buff *skb;
 780         struct rtllib_authentication *auth;
 781         int  len;
 782
 783         len = sizeof(struct rtllib_authentication) + challengelen +
 784                      ieee->tx_headroom + 4;
 785         skb = dev_alloc_skb(len);
 786
 787         if (!skb)
 788                 return NULL;
 789
 790         skb_reserve(skb, ieee->tx_headroom);
 791
 792         auth = (struct rtllib_authentication *)
 793                 skb_put(skb, sizeof(struct rtllib_authentication));
 794
 795         auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
 796         if (challengelen)
 797                 auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP);
 798
 799         auth->header.duration_id = cpu_to_le16(0x013a);
 800         ether_addr_copy(auth->header.addr1, beacon->bssid);
 801         ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
 802         ether_addr_copy(auth->header.addr3, beacon->bssid);
 803         if (ieee->auth_mode == 0)
 804                 auth->algorithm = WLAN_AUTH_OPEN;
 805         else if (ieee->auth_mode == 1)
 806                 auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY);
 807         else if (ieee->auth_mode == 2)
 808                 auth->algorithm = WLAN_AUTH_OPEN;
 809         auth->transaction = cpu_to_le16(ieee->associate_seq);
 810         ieee->associate_seq++;
 811
 812         auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
 813
 814         return skb;
 815 }
 816
 817 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee,
 818                                          const u8 *dest)
 819 {
 820         u8 *tag;
 821         int beacon_size;
 822         struct rtllib_probe_response *beacon_buf;
 823         struct sk_buff *skb = NULL;
 824         int encrypt;
 825         int atim_len, erp_len;
 826         struct lib80211_crypt_data *crypt;
 827
 828         char *ssid = ieee->current_network.ssid;
 829         int ssid_len = ieee->current_network.ssid_len;
 830         int rate_len = ieee->current_network.rates_len+2;
 831         int rate_ex_len = ieee->current_network.rates_ex_len;
 832         int wpa_ie_len = ieee->wpa_ie_len;
 833         u8 erpinfo_content = 0;
 834
 835         u8 *tmp_ht_cap_buf = NULL;
 836         u8 tmp_ht_cap_len = 0;
 837         u8 *tmp_ht_info_buf = NULL;
 838         u8 tmp_ht_info_len = 0;
 839         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 840         u8 *tmp_generic_ie_buf = NULL;
 841         u8 tmp_generic_ie_len = 0;
 842
 843         if (rate_ex_len > 0)
 844                 rate_ex_len += 2;
 845
 846         if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
 847                 atim_len = 4;
 848         else
 849                 atim_len = 0;
 850
 851         if ((ieee->current_network.mode == IEEE_G) ||
 852            (ieee->current_network.mode == IEEE_N_24G &&
 853            ieee->pHTInfo->bCurSuppCCK)) {
 854                 erp_len = 3;
 855                 erpinfo_content = 0;
 856                 if (ieee->current_network.buseprotection)
 857                         erpinfo_content |= ERP_UseProtection;
 858         } else
 859                 erp_len = 0;
 860
 861         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 862         encrypt = ieee->host_encrypt && crypt && crypt->ops &&
 863                 ((strcmp(crypt->ops->name, "R-WEP") == 0 || wpa_ie_len));
 864         if (ieee->pHTInfo->bCurrentHTSupport) {
 865                 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
 866                 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
 867                 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
 868                 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
 869                 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
 870                                              &tmp_ht_cap_len, encrypt, false);
 871                 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
 872                                        encrypt);
 873
 874                 if (pHTInfo->bRegRT2RTAggregation) {
 875                         tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
 876                         tmp_generic_ie_len =
 877                                  sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
 878                         HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
 879                                                    &tmp_generic_ie_len);
 880                 }
 881         }
 882
 883         beacon_size = sizeof(struct rtllib_probe_response)+2+
 884                 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
 885                 + wpa_ie_len + ieee->tx_headroom;
 886         skb = dev_alloc_skb(beacon_size);
 887         if (!skb)
 888                 return NULL;
 889
 890         skb_reserve(skb, ieee->tx_headroom);
 891
 892         beacon_buf = (struct rtllib_probe_response *) skb_put(skb,
 893                      (beacon_size - ieee->tx_headroom));
 894         ether_addr_copy(beacon_buf->header.addr1, dest);
 895         ether_addr_copy(beacon_buf->header.addr2, ieee->dev->dev_addr);
 896         ether_addr_copy(beacon_buf->header.addr3, ieee->current_network.bssid);
 897
 898         beacon_buf->header.duration_id = 0;
 899         beacon_buf->beacon_interval =
 900                 cpu_to_le16(ieee->current_network.beacon_interval);
 901         beacon_buf->capability =
 902                 cpu_to_le16(ieee->current_network.capability &
 903                 WLAN_CAPABILITY_IBSS);
 904         beacon_buf->capability |=
 905                 cpu_to_le16(ieee->current_network.capability &
 906                 WLAN_CAPABILITY_SHORT_PREAMBLE);
 907
 908         if (ieee->short_slot && (ieee->current_network.capability &
 909             WLAN_CAPABILITY_SHORT_SLOT_TIME))
 910                 beacon_buf->capability |=
 911                         cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
 912
 913         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 914         if (encrypt)
 915                 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
 916
 917
 918         beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
 919         beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
 920         beacon_buf->info_element[0].len = ssid_len;
 921
 922         tag = (u8 *) beacon_buf->info_element[0].data;
 923
 924         memcpy(tag, ssid, ssid_len);
 925
 926         tag += ssid_len;
 927
 928         *(tag++) = MFIE_TYPE_RATES;
 929         *(tag++) = rate_len-2;
 930         memcpy(tag, ieee->current_network.rates, rate_len-2);
 931         tag += rate_len-2;
 932
 933         *(tag++) = MFIE_TYPE_DS_SET;
 934         *(tag++) = 1;
 935         *(tag++) = ieee->current_network.channel;
 936
 937         if (atim_len) {
 938                 u16 val16;
 939                 *(tag++) = MFIE_TYPE_IBSS_SET;
 940                 *(tag++) = 2;
 941                 val16 = ieee->current_network.atim_window;
 942                 memcpy((u8 *)tag, (u8 *)&val16, 2);
 943                 tag += 2;
 944         }
 945
 946         if (erp_len) {
 947                 *(tag++) = MFIE_TYPE_ERP;
 948                 *(tag++) = 1;
 949                 *(tag++) = erpinfo_content;
 950         }
 951         if (rate_ex_len) {
 952                 *(tag++) = MFIE_TYPE_RATES_EX;
 953                 *(tag++) = rate_ex_len-2;
 954                 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
 955                 tag += rate_ex_len-2;
 956         }
 957
 958         if (wpa_ie_len) {
 959                 if (ieee->iw_mode == IW_MODE_ADHOC)
 960                         memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
 961                 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
 962                 tag += ieee->wpa_ie_len;
 963         }
 964         return skb;
 965 }
 966
 967 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
 968 {
 969         struct sk_buff *skb;
 970         u8 *tag;
 971
 972         struct lib80211_crypt_data *crypt;
 973         struct rtllib_assoc_response_frame *assoc;
 974         short encrypt;
 975
 976         unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
 977         int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
 978                   ieee->tx_headroom;
 979
 980         skb = dev_alloc_skb(len);
 981
 982         if (!skb)
 983                 return NULL;
 984
 985         skb_reserve(skb, ieee->tx_headroom);
 986
 987         assoc = (struct rtllib_assoc_response_frame *)
 988                 skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
 989
 990         assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
 991         ether_addr_copy(assoc->header.addr1, dest);
 992         ether_addr_copy(assoc->header.addr3, ieee->dev->dev_addr);
 993         ether_addr_copy(assoc->header.addr2, ieee->dev->dev_addr);
 994         assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
 995                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
 996
 997
 998         if (ieee->short_slot)
 999                 assoc->capability |=
1000                                  cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1001
1002         if (ieee->host_encrypt)
1003                 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1004         else
1005                 crypt = NULL;
1006
1007         encrypt = (crypt && crypt->ops);
1008
1009         if (encrypt)
1010                 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1011
1012         assoc->status = 0;
1013         assoc->aid = cpu_to_le16(ieee->assoc_id);
1014         if (ieee->assoc_id == 0x2007)
1015                 ieee->assoc_id = 0;
1016         else
1017                 ieee->assoc_id++;
1018
1019         tag = (u8 *) skb_put(skb, rate_len);
1020         rtllib_MFIE_Brate(ieee, &tag);
1021         rtllib_MFIE_Grate(ieee, &tag);
1022
1023         return skb;
1024 }
1025
1026 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1027                                  u8 *dest)
1028 {
1029         struct sk_buff *skb = NULL;
1030         struct rtllib_authentication *auth;
1031         int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1032
1033         skb = dev_alloc_skb(len);
1034         if (!skb)
1035                 return NULL;
1036
1037         skb->len = sizeof(struct rtllib_authentication);
1038
1039         skb_reserve(skb, ieee->tx_headroom);
1040
1041         auth = (struct rtllib_authentication *)
1042                 skb_put(skb, sizeof(struct rtllib_authentication));
1043
1044         auth->status = cpu_to_le16(status);
1045         auth->transaction = cpu_to_le16(2);
1046         auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1047
1048         ether_addr_copy(auth->header.addr3, ieee->dev->dev_addr);
1049         ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
1050         ether_addr_copy(auth->header.addr1, dest);
1051         auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1052         return skb;
1053
1054
1055 }
1056
1057 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1058 {
1059         struct sk_buff *skb;
1060         struct rtllib_hdr_3addr *hdr;
1061
1062         skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1063         if (!skb)
1064                 return NULL;
1065
1066         skb_reserve(skb, ieee->tx_headroom);
1067
1068         hdr = (struct rtllib_hdr_3addr *)skb_put(skb,
1069               sizeof(struct rtllib_hdr_3addr));
1070
1071         ether_addr_copy(hdr->addr1, ieee->current_network.bssid);
1072         ether_addr_copy(hdr->addr2, ieee->dev->dev_addr);
1073         ether_addr_copy(hdr->addr3, ieee->current_network.bssid);
1074
1075         hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1076                 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1077                 (pwr ? RTLLIB_FCTL_PM : 0));
1078
1079         return skb;
1080
1081
1082 }
1083
1084 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1085 {
1086         struct sk_buff *skb;
1087         struct rtllib_pspoll_hdr *hdr;
1088
1089         skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1090         if (!skb)
1091                 return NULL;
1092
1093         skb_reserve(skb, ieee->tx_headroom);
1094
1095         hdr = (struct rtllib_pspoll_hdr *)skb_put(skb,
1096               sizeof(struct rtllib_pspoll_hdr));
1097
1098         ether_addr_copy(hdr->bssid, ieee->current_network.bssid);
1099         ether_addr_copy(hdr->ta, ieee->dev->dev_addr);
1100
1101         hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1102         hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1103                          RTLLIB_FCTL_PM);
1104
1105         return skb;
1106
1107 }
1108
1109 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1110 {
1111         struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1112
1113         if (buf)
1114                 softmac_mgmt_xmit(buf, ieee);
1115 }
1116
1117
1118 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1119 {
1120         struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1121
1122         if (buf)
1123                 softmac_mgmt_xmit(buf, ieee);
1124 }
1125
1126
1127 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1128 {
1129         struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1130
1131         if (buf)
1132                 softmac_mgmt_xmit(buf, ieee);
1133 }
1134
1135
1136 static inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1137 {
1138         int i = 0;
1139
1140         do {
1141                 if ((ieee->PMKIDList[i].bUsed) &&
1142                    (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1143                         break;
1144                 i++;
1145         } while (i < NUM_PMKID_CACHE);
1146
1147         if (i == NUM_PMKID_CACHE)
1148                 i = -1;
1149         return i;
1150 }
1151
1152 static inline struct sk_buff *
1153 rtllib_association_req(struct rtllib_network *beacon,
1154                        struct rtllib_device *ieee)
1155 {
1156         struct sk_buff *skb;
1157         struct rtllib_assoc_request_frame *hdr;
1158         u8 *tag, *ies;
1159         int i;
1160         u8 *ht_cap_buf = NULL;
1161         u8 ht_cap_len = 0;
1162         u8 *realtek_ie_buf = NULL;
1163         u8 realtek_ie_len = 0;
1164         int wpa_ie_len = ieee->wpa_ie_len;
1165         int wps_ie_len = ieee->wps_ie_len;
1166         unsigned int ckip_ie_len = 0;
1167         unsigned int ccxrm_ie_len = 0;
1168         unsigned int cxvernum_ie_len = 0;
1169         struct lib80211_crypt_data *crypt;
1170         int encrypt;
1171         int     PMKCacheIdx;
1172
1173         unsigned int rate_len = (beacon->rates_len ?
1174                                 (beacon->rates_len + 2) : 0) +
1175                                 (beacon->rates_ex_len ? (beacon->rates_ex_len) +
1176                                 2 : 0);
1177
1178         unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1179         unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1180
1181         int len = 0;
1182
1183         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1184         if (crypt != NULL)
1185                 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1186                           ((strcmp(crypt->ops->name, "R-WEP") == 0 ||
1187                           wpa_ie_len));
1188         else
1189                 encrypt = 0;
1190
1191         if ((ieee->rtllib_ap_sec_type &&
1192             (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1193             ieee->bForcedBgMode) {
1194                 ieee->pHTInfo->bEnableHT = 0;
1195                 ieee->mode = WIRELESS_MODE_G;
1196         }
1197
1198         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1199                 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1200                 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1201                 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1202                                              encrypt, true);
1203                 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1204                         realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1205                         realtek_ie_len =
1206                                  sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1207                         HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1208                                                    &realtek_ie_len);
1209                 }
1210         }
1211
1212         if (beacon->bCkipSupported)
1213                 ckip_ie_len = 30+2;
1214         if (beacon->bCcxRmEnable)
1215                 ccxrm_ie_len = 6+2;
1216         if (beacon->BssCcxVerNumber >= 2)
1217                 cxvernum_ie_len = 5+2;
1218
1219         PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1220         if (PMKCacheIdx >= 0) {
1221                 wpa_ie_len += 18;
1222                 netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n",
1223                             wpa_ie_len);
1224         }
1225         len = sizeof(struct rtllib_assoc_request_frame) + 2
1226                 + beacon->ssid_len
1227                 + rate_len
1228                 + wpa_ie_len
1229                 + wps_ie_len
1230                 + wmm_info_len
1231                 + turbo_info_len
1232                 + ht_cap_len
1233                 + realtek_ie_len
1234                 + ckip_ie_len
1235                 + ccxrm_ie_len
1236                 + cxvernum_ie_len
1237                 + ieee->tx_headroom;
1238
1239         skb = dev_alloc_skb(len);
1240
1241         if (!skb)
1242                 return NULL;
1243
1244         skb_reserve(skb, ieee->tx_headroom);
1245
1246         hdr = (struct rtllib_assoc_request_frame *)
1247                 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1248
1249
1250         hdr->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_REQ);
1251         hdr->header.duration_id = cpu_to_le16(37);
1252         ether_addr_copy(hdr->header.addr1, beacon->bssid);
1253         ether_addr_copy(hdr->header.addr2, ieee->dev->dev_addr);
1254         ether_addr_copy(hdr->header.addr3, beacon->bssid);
1255
1256         ether_addr_copy(ieee->ap_mac_addr, beacon->bssid);
1257
1258         hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1259         if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1260                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1261
1262         if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1263                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1264
1265         if (ieee->short_slot &&
1266            (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1267                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1268
1269
1270         hdr->listen_interval = cpu_to_le16(beacon->listen_interval);
1271
1272         hdr->info_element[0].id = MFIE_TYPE_SSID;
1273
1274         hdr->info_element[0].len = beacon->ssid_len;
1275         tag = skb_put(skb, beacon->ssid_len);
1276         memcpy(tag, beacon->ssid, beacon->ssid_len);
1277
1278         tag = skb_put(skb, rate_len);
1279
1280         if (beacon->rates_len) {
1281                 *tag++ = MFIE_TYPE_RATES;
1282                 *tag++ = beacon->rates_len;
1283                 for (i = 0; i < beacon->rates_len; i++)
1284                         *tag++ = beacon->rates[i];
1285         }
1286
1287         if (beacon->rates_ex_len) {
1288                 *tag++ = MFIE_TYPE_RATES_EX;
1289                 *tag++ = beacon->rates_ex_len;
1290                 for (i = 0; i < beacon->rates_ex_len; i++)
1291                         *tag++ = beacon->rates_ex[i];
1292         }
1293
1294         if (beacon->bCkipSupported) {
1295                 static const u8 AironetIeOui[] = {0x00, 0x01, 0x66};
1296                 u8      CcxAironetBuf[30];
1297                 struct octet_string osCcxAironetIE;
1298
1299                 memset(CcxAironetBuf, 0, 30);
1300                 osCcxAironetIE.Octet = CcxAironetBuf;
1301                 osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1302                 memcpy(osCcxAironetIE.Octet, AironetIeOui,
1303                        sizeof(AironetIeOui));
1304
1305                 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1306                                          (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1307                 tag = skb_put(skb, ckip_ie_len);
1308                 *tag++ = MFIE_TYPE_AIRONET;
1309                 *tag++ = osCcxAironetIE.Length;
1310                 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1311                 tag += osCcxAironetIE.Length;
1312         }
1313
1314         if (beacon->bCcxRmEnable) {
1315                 static const u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01,
1316                         0x00};
1317                 struct octet_string osCcxRmCap;
1318
1319                 osCcxRmCap.Octet = (u8 *) CcxRmCapBuf;
1320                 osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1321                 tag = skb_put(skb, ccxrm_ie_len);
1322                 *tag++ = MFIE_TYPE_GENERIC;
1323                 *tag++ = osCcxRmCap.Length;
1324                 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1325                 tag += osCcxRmCap.Length;
1326         }
1327
1328         if (beacon->BssCcxVerNumber >= 2) {
1329                 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1330                 struct octet_string osCcxVerNum;
1331
1332                 CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1333                 osCcxVerNum.Octet = CcxVerNumBuf;
1334                 osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1335                 tag = skb_put(skb, cxvernum_ie_len);
1336                 *tag++ = MFIE_TYPE_GENERIC;
1337                 *tag++ = osCcxVerNum.Length;
1338                 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1339                 tag += osCcxVerNum.Length;
1340         }
1341         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1342                 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1343                         tag = skb_put(skb, ht_cap_len);
1344                         *tag++ = MFIE_TYPE_HT_CAP;
1345                         *tag++ = ht_cap_len - 2;
1346                         memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1347                         tag += ht_cap_len - 2;
1348                 }
1349         }
1350
1351         if (wpa_ie_len) {
1352                 tag = skb_put(skb, ieee->wpa_ie_len);
1353                 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
1354
1355                 if (PMKCacheIdx >= 0) {
1356                         tag = skb_put(skb, 18);
1357                         *tag = 1;
1358                         *(tag + 1) = 0;
1359                         memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1360                                16);
1361                 }
1362         }
1363         if (wmm_info_len) {
1364                 tag = skb_put(skb, wmm_info_len);
1365                 rtllib_WMM_Info(ieee, &tag);
1366         }
1367
1368         if (wps_ie_len && ieee->wps_ie) {
1369                 tag = skb_put(skb, wps_ie_len);
1370                 memcpy(tag, ieee->wps_ie, wps_ie_len);
1371         }
1372
1373         tag = skb_put(skb, turbo_info_len);
1374         if (turbo_info_len)
1375                 rtllib_TURBO_Info(ieee, &tag);
1376
1377         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1378                 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1379                         tag = skb_put(skb, ht_cap_len);
1380                         *tag++ = MFIE_TYPE_GENERIC;
1381                         *tag++ = ht_cap_len - 2;
1382                         memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1383                         tag += ht_cap_len - 2;
1384                 }
1385
1386                 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1387                         tag = skb_put(skb, realtek_ie_len);
1388                         *tag++ = MFIE_TYPE_GENERIC;
1389                         *tag++ = realtek_ie_len - 2;
1390                         memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1391                 }
1392         }
1393
1394         kfree(ieee->assocreq_ies);
1395         ieee->assocreq_ies = NULL;
1396         ies = &(hdr->info_element[0].id);
1397         ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1398         ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
1399         if (ieee->assocreq_ies)
1400                 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
1401         else {
1402                 netdev_info(ieee->dev,
1403                             "%s()Warning: can't alloc memory for assocreq_ies\n",
1404                             __func__);
1405                 ieee->assocreq_ies_len = 0;
1406         }
1407         return skb;
1408 }
1409
1410 static void rtllib_associate_abort(struct rtllib_device *ieee)
1411 {
1412         unsigned long flags;
1413
1414         spin_lock_irqsave(&ieee->lock, flags);
1415
1416         ieee->associate_seq++;
1417
1418         /* don't scan, and avoid to have the RX path possibily
1419          * try again to associate. Even do not react to AUTH or
1420          * ASSOC response. Just wait for the retry wq to be scheduled.
1421          * Here we will check if there are good nets to associate
1422          * with, so we retry or just get back to NO_LINK and scanning
1423          */
1424         if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1425                 netdev_dbg(ieee->dev, "Authentication failed\n");
1426                 ieee->softmac_stats.no_auth_rs++;
1427         } else {
1428                 netdev_dbg(ieee->dev, "Association failed\n");
1429                 ieee->softmac_stats.no_ass_rs++;
1430         }
1431
1432         ieee->state = RTLLIB_ASSOCIATING_RETRY;
1433
1434         schedule_delayed_work(&ieee->associate_retry_wq,
1435                               RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1436
1437         spin_unlock_irqrestore(&ieee->lock, flags);
1438 }
1439
1440 static void rtllib_associate_abort_cb(unsigned long dev)
1441 {
1442         rtllib_associate_abort((struct rtllib_device *) dev);
1443 }
1444
1445 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr)
1446 {
1447         struct rtllib_network *beacon = &ieee->current_network;
1448         struct sk_buff *skb;
1449
1450         netdev_dbg(ieee->dev, "Stopping scan\n");
1451
1452         ieee->softmac_stats.tx_auth_rq++;
1453
1454         skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1455
1456         if (!skb)
1457                 rtllib_associate_abort(ieee);
1458         else {
1459                 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING;
1460                 netdev_dbg(ieee->dev, "Sending authentication request\n");
1461                 softmac_mgmt_xmit(skb, ieee);
1462                 if (!timer_pending(&ieee->associate_timer)) {
1463                         ieee->associate_timer.expires = jiffies + (HZ / 2);
1464                         add_timer(&ieee->associate_timer);
1465                 }
1466         }
1467 }
1468
1469 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge,
1470                                   int chlen)
1471 {
1472         u8 *c;
1473         struct sk_buff *skb;
1474         struct rtllib_network *beacon = &ieee->current_network;
1475
1476         ieee->associate_seq++;
1477         ieee->softmac_stats.tx_auth_rq++;
1478
1479         skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1480
1481         if (!skb)
1482                 rtllib_associate_abort(ieee);
1483         else {
1484                 c = skb_put(skb, chlen+2);
1485                 *(c++) = MFIE_TYPE_CHALLENGE;
1486                 *(c++) = chlen;
1487                 memcpy(c, challenge, chlen);
1488
1489                 netdev_dbg(ieee->dev,
1490                            "Sending authentication challenge response\n");
1491
1492                 rtllib_encrypt_fragment(ieee, skb,
1493                                         sizeof(struct rtllib_hdr_3addr));
1494
1495                 softmac_mgmt_xmit(skb, ieee);
1496                 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1497         }
1498         kfree(challenge);
1499 }
1500
1501 static void rtllib_associate_step2(struct rtllib_device *ieee)
1502 {
1503         struct sk_buff *skb;
1504         struct rtllib_network *beacon = &ieee->current_network;
1505
1506         del_timer_sync(&ieee->associate_timer);
1507
1508         netdev_dbg(ieee->dev, "Sending association request\n");
1509
1510         ieee->softmac_stats.tx_ass_rq++;
1511         skb = rtllib_association_req(beacon, ieee);
1512         if (!skb)
1513                 rtllib_associate_abort(ieee);
1514         else {
1515                 softmac_mgmt_xmit(skb, ieee);
1516                 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1517         }
1518 }
1519
1520 static void rtllib_associate_complete_wq(void *data)
1521 {
1522         struct rtllib_device *ieee = (struct rtllib_device *)
1523                                      container_of_work_rsl(data,
1524                                      struct rtllib_device,
1525                                      associate_complete_wq);
1526         struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl);
1527         netdev_info(ieee->dev, "Associated successfully\n");
1528         if (!ieee->is_silent_reset) {
1529                 netdev_info(ieee->dev, "normal associate\n");
1530                 notify_wx_assoc_event(ieee);
1531         }
1532
1533         netif_carrier_on(ieee->dev);
1534         ieee->is_roaming = false;
1535         if (rtllib_is_54g(&ieee->current_network) &&
1536            (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1537                 ieee->rate = 108;
1538                 netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate);
1539         } else {
1540                 ieee->rate = 22;
1541                 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1542                 netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate);
1543         }
1544         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1545                 netdev_info(ieee->dev, "Successfully associated, ht enabled\n");
1546                 HTOnAssocRsp(ieee);
1547         } else {
1548                 netdev_info(ieee->dev,
1549                             "Successfully associated, ht not enabled(%d, %d)\n",
1550                             ieee->pHTInfo->bCurrentHTSupport,
1551                             ieee->pHTInfo->bEnableHT);
1552                 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1553         }
1554         ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1555                                        ieee->current_network.beacon_interval /
1556                                        500);
1557         if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1558             ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1559                 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1560                 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1561         }
1562         pPSC->LpsIdleCount = 0;
1563         ieee->link_change(ieee->dev);
1564
1565         if (ieee->is_silent_reset) {
1566                 netdev_info(ieee->dev, "silent reset associate\n");
1567                 ieee->is_silent_reset = false;
1568         }
1569
1570         if (ieee->data_hard_resume)
1571                 ieee->data_hard_resume(ieee->dev);
1572
1573 }
1574
1575 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1576 {
1577 }
1578
1579 static void rtllib_associate_complete(struct rtllib_device *ieee)
1580 {
1581         del_timer_sync(&ieee->associate_timer);
1582
1583         ieee->state = RTLLIB_LINKED;
1584         rtllib_sta_send_associnfo(ieee);
1585
1586         schedule_work(&ieee->associate_complete_wq);
1587 }
1588
1589 static void rtllib_associate_procedure_wq(void *data)
1590 {
1591         struct rtllib_device *ieee = container_of_dwork_rsl(data,
1592                                      struct rtllib_device,
1593                                      associate_procedure_wq);
1594         rtllib_stop_scan_syncro(ieee);
1595         if (ieee->rtllib_ips_leave != NULL)
1596                 ieee->rtllib_ips_leave(ieee->dev);
1597         mutex_lock(&ieee->wx_mutex);
1598
1599         if (ieee->data_hard_stop)
1600                 ieee->data_hard_stop(ieee->dev);
1601
1602         rtllib_stop_scan(ieee);
1603         RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1604                  ieee->current_network.channel);
1605         HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1606         if (ieee->eRFPowerState == eRfOff) {
1607                 RT_TRACE(COMP_DBG,
1608                          "=============>%s():Rf state is eRfOff, schedule ipsleave wq again,return\n",
1609                          __func__);
1610                 if (ieee->rtllib_ips_leave_wq != NULL)
1611                         ieee->rtllib_ips_leave_wq(ieee->dev);
1612                 mutex_unlock(&ieee->wx_mutex);
1613                 return;
1614         }
1615         ieee->associate_seq = 1;
1616
1617         rtllib_associate_step1(ieee, ieee->current_network.bssid);
1618
1619         mutex_unlock(&ieee->wx_mutex);
1620 }
1621
1622 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1623                                    struct rtllib_network *net)
1624 {
1625         u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1626         int tmp_ssid_len = 0;
1627
1628         short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1629
1630         /* we are interested in new new only if we are not associated
1631          * and we are not associating / authenticating
1632          */
1633         if (ieee->state != RTLLIB_NOLINK)
1634                 return;
1635
1636         if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1637             WLAN_CAPABILITY_ESS))
1638                 return;
1639
1640         if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1641              WLAN_CAPABILITY_IBSS))
1642                 return;
1643
1644         if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1645             (net->channel > ieee->ibss_maxjoin_chal))
1646                 return;
1647         if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1648                 /* if the user specified the AP MAC, we need also the essid
1649                  * This could be obtained by beacons or, if the network does not
1650                  * broadcast it, it can be put manually.
1651                  */
1652                 apset = ieee->wap_set;
1653                 ssidset = ieee->ssid_set;
1654                 ssidbroad =  !(net->ssid_len == 0 || net->ssid[0] == '\0');
1655                 apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1656                                   ETH_ALEN) == 0);
1657                 if (!ssidbroad) {
1658                         ssidmatch = (ieee->current_network.ssid_len ==
1659                                     net->hidden_ssid_len) &&
1660                                     (!strncmp(ieee->current_network.ssid,
1661                                     net->hidden_ssid, net->hidden_ssid_len));
1662                         if (net->hidden_ssid_len > 0) {
1663                                 strncpy(net->ssid, net->hidden_ssid,
1664                                         net->hidden_ssid_len);
1665                                 net->ssid_len = net->hidden_ssid_len;
1666                                 ssidbroad = 1;
1667                         }
1668                 } else
1669                         ssidmatch =
1670                            (ieee->current_network.ssid_len == net->ssid_len) &&
1671                            (!strncmp(ieee->current_network.ssid, net->ssid,
1672                            net->ssid_len));
1673
1674                 /* if the user set the AP check if match.
1675                  * if the network does not broadcast essid we check the
1676                  *       user supplied ANY essid
1677                  * if the network does broadcast and the user does not set
1678                  *       essid it is OK
1679                  * if the network does broadcast and the user did set essid
1680                  * check if essid match
1681                  * if the ap is not set, check that the user set the bssid
1682                  * and the network does broadcast and that those two bssid match
1683                  */
1684                 if ((apset && apmatch &&
1685                    ((ssidset && ssidbroad && ssidmatch) ||
1686                    (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1687                    (!apset && ssidset && ssidbroad && ssidmatch) ||
1688                    (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1689                         /* if the essid is hidden replace it with the
1690                          * essid provided by the user.
1691                          */
1692                         if (!ssidbroad) {
1693                                 strncpy(tmp_ssid, ieee->current_network.ssid,
1694                                         IW_ESSID_MAX_SIZE);
1695                                 tmp_ssid_len = ieee->current_network.ssid_len;
1696                         }
1697                         memcpy(&ieee->current_network, net,
1698                                sizeof(struct rtllib_network));
1699                         if (!ssidbroad) {
1700                                 strncpy(ieee->current_network.ssid, tmp_ssid,
1701                                         IW_ESSID_MAX_SIZE);
1702                                 ieee->current_network.ssid_len = tmp_ssid_len;
1703                         }
1704                         netdev_info(ieee->dev,
1705                                     "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d, mode:%x cur_net.flags:0x%x\n",
1706                                     ieee->current_network.ssid,
1707                                     ieee->current_network.channel,
1708                                     ieee->current_network.qos_data.supported,
1709                                     ieee->pHTInfo->bEnableHT,
1710                                     ieee->current_network.bssht.bdSupportHT,
1711                                     ieee->current_network.mode,
1712                                     ieee->current_network.flags);
1713
1714                         if ((rtllib_act_scanning(ieee, false)) &&
1715                            !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1716                                 rtllib_stop_scan_syncro(ieee);
1717
1718                         HTResetIOTSetting(ieee->pHTInfo);
1719                         ieee->wmm_acm = 0;
1720                         if (ieee->iw_mode == IW_MODE_INFRA) {
1721                                 /* Join the network for the first time */
1722                                 ieee->AsocRetryCount = 0;
1723                                 if ((ieee->current_network.qos_data.supported == 1) &&
1724                                     ieee->current_network.bssht.bdSupportHT)
1725                                         HTResetSelfAndSavePeerSetting(ieee,
1726                                                  &(ieee->current_network));
1727                                 else
1728                                         ieee->pHTInfo->bCurrentHTSupport =
1729                                                                  false;
1730
1731                                 ieee->state = RTLLIB_ASSOCIATING;
1732                                 if (ieee->LedControlHandler != NULL)
1733                                         ieee->LedControlHandler(ieee->dev,
1734                                                          LED_CTL_START_TO_LINK);
1735                                 schedule_delayed_work(
1736                                            &ieee->associate_procedure_wq, 0);
1737                         } else {
1738                                 if (rtllib_is_54g(&ieee->current_network) &&
1739                                     (ieee->modulation &
1740                                      RTLLIB_OFDM_MODULATION)) {
1741                                         ieee->rate = 108;
1742                                         ieee->SetWirelessMode(ieee->dev,
1743                                                               IEEE_G);
1744                                         netdev_info(ieee->dev,
1745                                                     "Using G rates\n");
1746                                 } else {
1747                                         ieee->rate = 22;
1748                                         ieee->SetWirelessMode(ieee->dev,
1749                                                               IEEE_B);
1750                                         netdev_info(ieee->dev,
1751                                                     "Using B rates\n");
1752                                 }
1753                                 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1754                                 ieee->state = RTLLIB_LINKED;
1755                         }
1756                 }
1757         }
1758 }
1759
1760 static void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1761 {
1762         unsigned long flags;
1763         struct rtllib_network *target;
1764
1765         spin_lock_irqsave(&ieee->lock, flags);
1766
1767         list_for_each_entry(target, &ieee->network_list, list) {
1768
1769                 /* if the state become different that NOLINK means
1770                  * we had found what we are searching for
1771                  */
1772
1773                 if (ieee->state != RTLLIB_NOLINK)
1774                         break;
1775
1776                 if (ieee->scan_age == 0 || time_after(target->last_scanned +
1777                     ieee->scan_age, jiffies))
1778                         rtllib_softmac_new_net(ieee, target);
1779         }
1780         spin_unlock_irqrestore(&ieee->lock, flags);
1781 }
1782
1783 static inline u16 auth_parse(struct net_device *dev, struct sk_buff *skb,
1784                              u8 **challenge, int *chlen)
1785 {
1786         struct rtllib_authentication *a;
1787         u8 *t;
1788
1789         if (skb->len <  (sizeof(struct rtllib_authentication) -
1790             sizeof(struct rtllib_info_element))) {
1791                 netdev_dbg(dev, "invalid len in auth resp: %d\n", skb->len);
1792                 return 0xcafe;
1793         }
1794         *challenge = NULL;
1795         a = (struct rtllib_authentication *) skb->data;
1796         if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1797                 t = skb->data + sizeof(struct rtllib_authentication);
1798
1799                 if (*(t++) == MFIE_TYPE_CHALLENGE) {
1800                         *chlen = *(t++);
1801                         *challenge = kmemdup(t, *chlen, GFP_ATOMIC);
1802                         if (!*challenge)
1803                                 return -ENOMEM;
1804                 }
1805         }
1806         return le16_to_cpu(a->status);
1807 }
1808
1809 static int auth_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest)
1810 {
1811         struct rtllib_authentication *a;
1812
1813         if (skb->len <  (sizeof(struct rtllib_authentication) -
1814             sizeof(struct rtllib_info_element))) {
1815                 netdev_dbg(dev, "invalid len in auth request: %d\n", skb->len);
1816                 return -1;
1817         }
1818         a = (struct rtllib_authentication *) skb->data;
1819
1820         ether_addr_copy(dest, a->header.addr2);
1821
1822         if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1823                 return  WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1824
1825         return WLAN_STATUS_SUCCESS;
1826 }
1827
1828 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1829                             u8 *src)
1830 {
1831         u8 *tag;
1832         u8 *skbend;
1833         u8 *ssid = NULL;
1834         u8 ssidlen = 0;
1835         struct rtllib_hdr_3addr   *header =
1836                 (struct rtllib_hdr_3addr   *) skb->data;
1837         bool bssid_match;
1838
1839         if (skb->len < sizeof(struct rtllib_hdr_3addr))
1840                 return -1; /* corrupted */
1841
1842         bssid_match =
1843           (!ether_addr_equal(header->addr3, ieee->current_network.bssid)) &&
1844           (!is_broadcast_ether_addr(header->addr3));
1845         if (bssid_match)
1846                 return -1;
1847
1848         ether_addr_copy(src, header->addr2);
1849
1850         skbend = (u8 *)skb->data + skb->len;
1851
1852         tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1853
1854         while (tag + 1 < skbend) {
1855                 if (*tag == 0) {
1856                         ssid = tag + 2;
1857                         ssidlen = *(tag + 1);
1858                         break;
1859                 }
1860                 tag++; /* point to the len field */
1861                 tag = tag + *(tag); /* point to the last data byte of the tag */
1862                 tag++; /* point to the next tag */
1863         }
1864
1865         if (ssidlen == 0)
1866                 return 1;
1867
1868         if (!ssid)
1869                 return 1; /* ssid not found in tagged param */
1870
1871         return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1872 }
1873
1874 static int assoc_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest)
1875 {
1876         struct rtllib_assoc_request_frame *a;
1877
1878         if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1879                 sizeof(struct rtllib_info_element))) {
1880                 netdev_dbg(dev, "invalid len in auth request:%d\n", skb->len);
1881                 return -1;
1882         }
1883
1884         a = (struct rtllib_assoc_request_frame *) skb->data;
1885
1886         ether_addr_copy(dest, a->header.addr2);
1887
1888         return 0;
1889 }
1890
1891 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1892                               int *aid)
1893 {
1894         struct rtllib_assoc_response_frame *response_head;
1895         u16 status_code;
1896
1897         if (skb->len <  sizeof(struct rtllib_assoc_response_frame)) {
1898                 netdev_dbg(ieee->dev, "Invalid len in auth resp: %d\n",
1899                            skb->len);
1900                 return 0xcafe;
1901         }
1902
1903         response_head = (struct rtllib_assoc_response_frame *) skb->data;
1904         *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1905
1906         status_code = le16_to_cpu(response_head->status);
1907         if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1908            status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1909            ((ieee->mode == IEEE_G) &&
1910            (ieee->current_network.mode == IEEE_N_24G) &&
1911            (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1912                 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1913         } else {
1914                 ieee->AsocRetryCount = 0;
1915         }
1916
1917         return le16_to_cpu(response_head->status);
1918 }
1919
1920 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1921 {
1922         u8 dest[ETH_ALEN];
1923
1924         ieee->softmac_stats.rx_probe_rq++;
1925         if (probe_rq_parse(ieee, skb, dest) > 0) {
1926                 ieee->softmac_stats.tx_probe_rs++;
1927                 rtllib_resp_to_probe(ieee, dest);
1928         }
1929 }
1930
1931 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1932                                      struct sk_buff *skb)
1933 {
1934         u8 dest[ETH_ALEN];
1935         int status;
1936
1937         ieee->softmac_stats.rx_auth_rq++;
1938
1939         status = auth_rq_parse(ieee->dev, skb, dest);
1940         if (status != -1)
1941                 rtllib_resp_to_auth(ieee, status, dest);
1942 }
1943
1944 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1945                                       struct sk_buff *skb)
1946 {
1947         u8 dest[ETH_ALEN];
1948
1949
1950         ieee->softmac_stats.rx_ass_rq++;
1951         if (assoc_rq_parse(ieee->dev, skb, dest) != -1)
1952                 rtllib_resp_to_assoc_rq(ieee, dest);
1953
1954         netdev_info(ieee->dev, "New client associated: %pM\n", dest);
1955 }
1956
1957 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1958 {
1959
1960         struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1961
1962         if (buf)
1963                 softmac_ps_mgmt_xmit(buf, ieee);
1964 }
1965 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1966
1967 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1968 {
1969         struct sk_buff *buf = rtllib_pspoll_func(ieee);
1970
1971         if (buf)
1972                 softmac_ps_mgmt_xmit(buf, ieee);
1973 }
1974
1975 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1976 {
1977         int timeout = ieee->ps_timeout;
1978         u8 dtim;
1979         struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl);
1980
1981         if (ieee->LPSDelayCnt) {
1982                 ieee->LPSDelayCnt--;
1983                 return 0;
1984         }
1985
1986         dtim = ieee->current_network.dtim_data;
1987         if (!(dtim & RTLLIB_DTIM_VALID))
1988                 return 0;
1989         timeout = ieee->current_network.beacon_interval;
1990         ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1991         /* there's no need to nofity AP that I find you buffered
1992          * with broadcast packet
1993          */
1994         if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1995                 return 2;
1996
1997         if (!time_after(jiffies,
1998                         dev_trans_start(ieee->dev) + msecs_to_jiffies(timeout)))
1999                 return 0;
2000         if (!time_after(jiffies,
2001                         ieee->last_rx_ps_time + msecs_to_jiffies(timeout)))
2002                 return 0;
2003         if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
2004             (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
2005                 return 0;
2006
2007         if (time) {
2008                 if (ieee->bAwakePktSent) {
2009                         pPSC->LPSAwakeIntvl = 1;
2010                 } else {
2011                         u8 MaxPeriod = 1;
2012
2013                         if (pPSC->LPSAwakeIntvl == 0)
2014                                 pPSC->LPSAwakeIntvl = 1;
2015                         if (pPSC->RegMaxLPSAwakeIntvl == 0)
2016                                 MaxPeriod = 1;
2017                         else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2018                                 MaxPeriod = ieee->current_network.dtim_period;
2019                         else
2020                                 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2021                         pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2022                                                MaxPeriod) ? MaxPeriod :
2023                                                (pPSC->LPSAwakeIntvl + 1);
2024                 }
2025                 {
2026                         u8 LPSAwakeIntvl_tmp = 0;
2027                         u8 period = ieee->current_network.dtim_period;
2028                         u8 count = ieee->current_network.tim.tim_count;
2029
2030                         if (count == 0) {
2031                                 if (pPSC->LPSAwakeIntvl > period)
2032                                         LPSAwakeIntvl_tmp = period +
2033                                                  (pPSC->LPSAwakeIntvl -
2034                                                  period) -
2035                                                  ((pPSC->LPSAwakeIntvl-period) %
2036                                                  period);
2037                                 else
2038                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2039
2040                         } else {
2041                                 if (pPSC->LPSAwakeIntvl >
2042                                     ieee->current_network.tim.tim_count)
2043                                         LPSAwakeIntvl_tmp = count +
2044                                         (pPSC->LPSAwakeIntvl - count) -
2045                                         ((pPSC->LPSAwakeIntvl-count)%period);
2046                                 else
2047                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2048                         }
2049
2050                 *time = ieee->current_network.last_dtim_sta_time
2051                         + msecs_to_jiffies(ieee->current_network.beacon_interval *
2052                         LPSAwakeIntvl_tmp);
2053         }
2054         }
2055
2056         return 1;
2057
2058
2059 }
2060
2061 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2062 {
2063         u64 time;
2064         short sleep;
2065         unsigned long flags, flags2;
2066
2067         spin_lock_irqsave(&ieee->lock, flags);
2068
2069         if ((ieee->ps == RTLLIB_PS_DISABLED ||
2070              ieee->iw_mode != IW_MODE_INFRA ||
2071              ieee->state != RTLLIB_LINKED)) {
2072                 RT_TRACE(COMP_DBG,
2073                          "=====>%s(): no need to ps,wake up!! ieee->ps is %d, ieee->iw_mode is %d, ieee->state is %d\n",
2074                          __func__, ieee->ps, ieee->iw_mode, ieee->state);
2075                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2076                 rtllib_sta_wakeup(ieee, 1);
2077
2078                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2079         }
2080         sleep = rtllib_sta_ps_sleep(ieee, &time);
2081         /* 2 wake, 1 sleep, 0 do nothing */
2082         if (sleep == 0)
2083                 goto out;
2084         if (sleep == 1) {
2085                 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2086                         ieee->enter_sleep_state(ieee->dev, time);
2087                 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2088                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2089
2090                         if (ieee->ps_is_queue_empty(ieee->dev)) {
2091                                 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2092                                 ieee->ack_tx_to_ieee = 1;
2093                                 rtllib_sta_ps_send_null_frame(ieee, 1);
2094                                 ieee->ps_time = time;
2095                         }
2096                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2097
2098                 }
2099
2100                 ieee->bAwakePktSent = false;
2101
2102         } else if (sleep == 2) {
2103                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2104
2105                 rtllib_sta_wakeup(ieee, 1);
2106
2107                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2108         }
2109
2110 out:
2111         spin_unlock_irqrestore(&ieee->lock, flags);
2112
2113 }
2114
2115 static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2116 {
2117         if (ieee->sta_sleep == LPS_IS_WAKE) {
2118                 if (nl) {
2119                         if (ieee->pHTInfo->IOTAction &
2120                             HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2121                                 ieee->ack_tx_to_ieee = 1;
2122                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2123                         } else {
2124                                 ieee->ack_tx_to_ieee = 1;
2125                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2126                         }
2127                 }
2128                 return;
2129
2130         }
2131
2132         if (ieee->sta_sleep == LPS_IS_SLEEP)
2133                 ieee->sta_wake_up(ieee->dev);
2134         if (nl) {
2135                 if (ieee->pHTInfo->IOTAction &
2136                     HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2137                         ieee->ack_tx_to_ieee = 1;
2138                         rtllib_sta_ps_send_null_frame(ieee, 0);
2139                 } else {
2140                         ieee->ack_tx_to_ieee = 1;
2141                         ieee->polling = true;
2142                         rtllib_sta_ps_send_pspoll_frame(ieee);
2143                 }
2144
2145         } else {
2146                 ieee->sta_sleep = LPS_IS_WAKE;
2147                 ieee->polling = false;
2148         }
2149 }
2150
2151 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2152 {
2153         unsigned long flags, flags2;
2154
2155         spin_lock_irqsave(&ieee->lock, flags);
2156
2157         if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2158                 /* Null frame with PS bit set */
2159                 if (success) {
2160                         ieee->sta_sleep = LPS_IS_SLEEP;
2161                         ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2162                 }
2163                 /* if the card report not success we can't be sure the AP
2164                  * has not RXed so we can't assume the AP believe us awake
2165                  */
2166         } else {/* 21112005 - tx again null without PS bit if lost */
2167
2168                 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2169                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2170                         if (ieee->pHTInfo->IOTAction &
2171                             HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2172                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2173                         else
2174                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2175                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2176                 }
2177         }
2178         spin_unlock_irqrestore(&ieee->lock, flags);
2179 }
2180 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2181
2182 static void rtllib_process_action(struct rtllib_device *ieee,
2183                                   struct sk_buff *skb)
2184 {
2185         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2186         u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2187         u8 category = 0;
2188
2189         if (act == NULL) {
2190                 netdev_warn(ieee->dev,
2191                             "Error getting payload of action frame\n");
2192                 return;
2193         }
2194
2195         category = *act;
2196         act++;
2197         switch (category) {
2198         case ACT_CAT_BA:
2199                 switch (*act) {
2200                 case ACT_ADDBAREQ:
2201                         rtllib_rx_ADDBAReq(ieee, skb);
2202                         break;
2203                 case ACT_ADDBARSP:
2204                         rtllib_rx_ADDBARsp(ieee, skb);
2205                         break;
2206                 case ACT_DELBA:
2207                         rtllib_rx_DELBA(ieee, skb);
2208                         break;
2209                 }
2210                 break;
2211         default:
2212                 break;
2213         }
2214 }
2215
2216 static inline int
2217 rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2218                      struct rtllib_rx_stats *rx_stats)
2219 {
2220         u16 errcode;
2221         int aid;
2222         u8 *ies;
2223         struct rtllib_assoc_response_frame *assoc_resp;
2224         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2225         u16 frame_ctl = le16_to_cpu(header->frame_ctl);
2226
2227         netdev_dbg(ieee->dev, "received [RE]ASSOCIATION RESPONSE (%d)\n",
2228                    WLAN_FC_GET_STYPE(frame_ctl));
2229
2230         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2231              ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2232              (ieee->iw_mode == IW_MODE_INFRA)) {
2233                 errcode = assoc_parse(ieee, skb, &aid);
2234                 if (!errcode) {
2235                         struct rtllib_network *network =
2236                                  kzalloc(sizeof(struct rtllib_network),
2237                                  GFP_ATOMIC);
2238
2239                         if (!network)
2240                                 return 1;
2241                         ieee->state = RTLLIB_LINKED;
2242                         ieee->assoc_id = aid;
2243                         ieee->softmac_stats.rx_ass_ok++;
2244                         /* station support qos */
2245                         /* Let the register setting default with Legacy station */
2246                         assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2247                         if (ieee->current_network.qos_data.supported == 1) {
2248                                 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2249                                                         rx_stats->len - sizeof(*assoc_resp),
2250                                                         network, rx_stats)) {
2251                                         kfree(network);
2252                                         return 1;
2253                                 }
2254                                 memcpy(ieee->pHTInfo->PeerHTCapBuf,
2255                                        network->bssht.bdHTCapBuf,
2256                                        network->bssht.bdHTCapLen);
2257                                 memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2258                                        network->bssht.bdHTInfoBuf,
2259                                        network->bssht.bdHTInfoLen);
2260                                 if (ieee->handle_assoc_response != NULL)
2261                                         ieee->handle_assoc_response(ieee->dev,
2262                                                  (struct rtllib_assoc_response_frame *)header,
2263                                                  network);
2264                         }
2265                         kfree(network);
2266
2267                         kfree(ieee->assocresp_ies);
2268                         ieee->assocresp_ies = NULL;
2269                         ies = &(assoc_resp->info_element[0].id);
2270                         ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2271                         ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2272                                                       GFP_ATOMIC);
2273                         if (ieee->assocresp_ies)
2274                                 memcpy(ieee->assocresp_ies, ies,
2275                                        ieee->assocresp_ies_len);
2276                         else {
2277                                 netdev_info(ieee->dev,
2278                                             "%s()Warning: can't alloc memory for assocresp_ies\n",
2279                                             __func__);
2280                                 ieee->assocresp_ies_len = 0;
2281                         }
2282                         rtllib_associate_complete(ieee);
2283                 } else {
2284                         /* aid could not been allocated */
2285                         ieee->softmac_stats.rx_ass_err++;
2286                         netdev_info(ieee->dev,
2287                                     "Association response status code 0x%x\n",
2288                                     errcode);
2289                         if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2290                                 schedule_delayed_work(
2291                                          &ieee->associate_procedure_wq, 0);
2292                         else
2293                                 rtllib_associate_abort(ieee);
2294                 }
2295         }
2296         return 0;
2297 }
2298
2299 static void rtllib_rx_auth_resp(struct rtllib_device *ieee, struct sk_buff *skb)
2300 {
2301         u16 errcode;
2302         u8 *challenge;
2303         int chlen = 0;
2304         bool bSupportNmode = true, bHalfSupportNmode = false;
2305
2306         errcode = auth_parse(ieee->dev, skb, &challenge, &chlen);
2307
2308         if (errcode) {
2309                 ieee->softmac_stats.rx_auth_rs_err++;
2310                 netdev_info(ieee->dev,
2311                             "Authentication respose status code 0x%x", errcode);
2312                 rtllib_associate_abort(ieee);
2313                 return;
2314         }
2315
2316         if (ieee->open_wep || !challenge) {
2317                 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2318                 ieee->softmac_stats.rx_auth_rs_ok++;
2319                 if (!(ieee->pHTInfo->IOTAction & HT_IOT_ACT_PURE_N_MODE)) {
2320                         if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2321                                 if (IsHTHalfNmodeAPs(ieee)) {
2322                                         bSupportNmode = true;
2323                                         bHalfSupportNmode = true;
2324                                 } else {
2325                                         bSupportNmode = false;
2326                                         bHalfSupportNmode = false;
2327                                 }
2328                         }
2329                 }
2330                 /* Dummy wirless mode setting to avoid encryption issue */
2331                 if (bSupportNmode) {
2332                         ieee->SetWirelessMode(ieee->dev,
2333                                               ieee->current_network.mode);
2334                 } else {
2335                         /*TODO*/
2336                         ieee->SetWirelessMode(ieee->dev, IEEE_G);
2337                 }
2338
2339                 if ((ieee->current_network.mode == IEEE_N_24G) &&
2340                     bHalfSupportNmode) {
2341                         netdev_info(ieee->dev, "======>enter half N mode\n");
2342                         ieee->bHalfWirelessN24GMode = true;
2343                 } else {
2344                         ieee->bHalfWirelessN24GMode = false;
2345                 }
2346                 rtllib_associate_step2(ieee);
2347         } else {
2348                 rtllib_auth_challenge(ieee, challenge,  chlen);
2349         }
2350 }
2351
2352 static inline int
2353 rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2354                struct rtllib_rx_stats *rx_stats)
2355 {
2356
2357         if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2358                 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2359                     (ieee->iw_mode == IW_MODE_INFRA)) {
2360                         netdev_dbg(ieee->dev,
2361                                    "Received authentication response");
2362                         rtllib_rx_auth_resp(ieee, skb);
2363                 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2364                         rtllib_rx_auth_rq(ieee, skb);
2365                 }
2366         }
2367         return 0;
2368 }
2369
2370 static inline int
2371 rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2372 {
2373         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2374         u16 frame_ctl;
2375
2376         if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2377                 return 0;
2378
2379         /* FIXME for now repeat all the association procedure
2380          * both for disassociation and deauthentication
2381          */
2382         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2383             ieee->state == RTLLIB_LINKED &&
2384             (ieee->iw_mode == IW_MODE_INFRA)) {
2385                 frame_ctl = le16_to_cpu(header->frame_ctl);
2386                 netdev_info(ieee->dev,
2387                             "==========>received disassoc/deauth(%x) frame, reason code:%x\n",
2388                             WLAN_FC_GET_STYPE(frame_ctl),
2389                             ((struct rtllib_disassoc *)skb->data)->reason);
2390                 ieee->state = RTLLIB_ASSOCIATING;
2391                 ieee->softmac_stats.reassoc++;
2392                 ieee->is_roaming = true;
2393                 ieee->LinkDetectInfo.bBusyTraffic = false;
2394                 rtllib_disassociate(ieee);
2395                 RemovePeerTS(ieee, header->addr2);
2396                 if (ieee->LedControlHandler != NULL)
2397                         ieee->LedControlHandler(ieee->dev,
2398                                                 LED_CTL_START_TO_LINK);
2399
2400                 if (!(ieee->rtllib_ap_sec_type(ieee) &
2401                     (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2402                         schedule_delayed_work(
2403                                        &ieee->associate_procedure_wq, 5);
2404         }
2405         return 0;
2406 }
2407
2408 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2409                                    struct sk_buff *skb,
2410                                    struct rtllib_rx_stats *rx_stats, u16 type,
2411                                    u16 stype)
2412 {
2413         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2414         u16 frame_ctl;
2415
2416         if (!ieee->proto_started)
2417                 return 0;
2418
2419         frame_ctl = le16_to_cpu(header->frame_ctl);
2420         switch (WLAN_FC_GET_STYPE(frame_ctl)) {
2421         case RTLLIB_STYPE_ASSOC_RESP:
2422         case RTLLIB_STYPE_REASSOC_RESP:
2423                 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2424                         return 1;
2425                 break;
2426         case RTLLIB_STYPE_ASSOC_REQ:
2427         case RTLLIB_STYPE_REASSOC_REQ:
2428                 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2429                      ieee->iw_mode == IW_MODE_MASTER)
2430                         rtllib_rx_assoc_rq(ieee, skb);
2431                 break;
2432         case RTLLIB_STYPE_AUTH:
2433                 rtllib_rx_auth(ieee, skb, rx_stats);
2434                 break;
2435         case RTLLIB_STYPE_DISASSOC:
2436         case RTLLIB_STYPE_DEAUTH:
2437                 rtllib_rx_deauth(ieee, skb);
2438                 break;
2439         case RTLLIB_STYPE_MANAGE_ACT:
2440                 rtllib_process_action(ieee, skb);
2441                 break;
2442         default:
2443                 return -1;
2444         }
2445         return 0;
2446 }
2447
2448 /* following are for a simpler TX queue management.
2449  * Instead of using netif_[stop/wake]_queue the driver
2450  * will use these two functions (plus a reset one), that
2451  * will internally use the kernel netif_* and takes
2452  * care of the ieee802.11 fragmentation.
2453  * So the driver receives a fragment per time and might
2454  * call the stop function when it wants to not
2455  * have enough room to TX an entire packet.
2456  * This might be useful if each fragment needs it's own
2457  * descriptor, thus just keep a total free memory > than
2458  * the max fragmentation threshold is not enough.. If the
2459  * ieee802.11 stack passed a TXB struct then you need
2460  * to keep N free descriptors where
2461  * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2462  * In this way you need just one and the 802.11 stack
2463  * will take care of buffering fragments and pass them to
2464  * to the driver later, when it wakes the queue.
2465  */
2466 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2467 {
2468
2469         unsigned int queue_index = txb->queue_index;
2470         unsigned long flags;
2471         int  i;
2472         struct cb_desc *tcb_desc = NULL;
2473         unsigned long queue_len = 0;
2474
2475         spin_lock_irqsave(&ieee->lock, flags);
2476
2477         /* called with 2nd parm 0, no tx mgmt lock required */
2478         rtllib_sta_wakeup(ieee, 0);
2479
2480         /* update the tx status */
2481         tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2482                    MAX_DEV_ADDR_SIZE);
2483         if (tcb_desc->bMulticast)
2484                 ieee->stats.multicast++;
2485
2486         /* if xmit available, just xmit it immediately, else just insert it to
2487          * the wait queue
2488          */
2489         for (i = 0; i < txb->nr_frags; i++) {
2490                 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2491                 if ((queue_len  != 0) ||
2492                     (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2493                     (ieee->queue_stop)) {
2494                         /* insert the skb packet to the wait queue
2495                          * as for the completion function, it does not need
2496                          * to check it any more.
2497                          */
2498                         if (queue_len < 200)
2499                                 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2500                                                txb->fragments[i]);
2501                         else
2502                                 kfree_skb(txb->fragments[i]);
2503                 } else {
2504                         ieee->softmac_data_hard_start_xmit(
2505                                         txb->fragments[i],
2506                                         ieee->dev, ieee->rate);
2507                 }
2508         }
2509
2510         rtllib_txb_free(txb);
2511
2512         spin_unlock_irqrestore(&ieee->lock, flags);
2513
2514 }
2515
2516 void rtllib_reset_queue(struct rtllib_device *ieee)
2517 {
2518         unsigned long flags;
2519
2520         spin_lock_irqsave(&ieee->lock, flags);
2521         init_mgmt_queue(ieee);
2522         if (ieee->tx_pending.txb) {
2523                 rtllib_txb_free(ieee->tx_pending.txb);
2524                 ieee->tx_pending.txb = NULL;
2525         }
2526         ieee->queue_stop = 0;
2527         spin_unlock_irqrestore(&ieee->lock, flags);
2528
2529 }
2530 EXPORT_SYMBOL(rtllib_reset_queue);
2531
2532 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2533 {
2534         unsigned int i;
2535
2536         for (i = 0; i < ieee->dev->num_tx_queues; i++)
2537                 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2538
2539         netif_tx_stop_all_queues(ieee->dev);
2540 }
2541
2542 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2543 {
2544         netif_tx_wake_all_queues(ieee->dev);
2545 }
2546
2547 /* called in user context only */
2548 static void rtllib_start_master_bss(struct rtllib_device *ieee)
2549 {
2550         ieee->assoc_id = 1;
2551
2552         if (ieee->current_network.ssid_len == 0) {
2553                 strncpy(ieee->current_network.ssid,
2554                         RTLLIB_DEFAULT_TX_ESSID,
2555                         IW_ESSID_MAX_SIZE);
2556
2557                 ieee->current_network.ssid_len =
2558                                  strlen(RTLLIB_DEFAULT_TX_ESSID);
2559                 ieee->ssid_set = 1;
2560         }
2561
2562         ether_addr_copy(ieee->current_network.bssid, ieee->dev->dev_addr);
2563
2564         ieee->set_chan(ieee->dev, ieee->current_network.channel);
2565         ieee->state = RTLLIB_LINKED;
2566         ieee->link_change(ieee->dev);
2567         notify_wx_assoc_event(ieee);
2568
2569         if (ieee->data_hard_resume)
2570                 ieee->data_hard_resume(ieee->dev);
2571
2572         netif_carrier_on(ieee->dev);
2573 }
2574
2575 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2576 {
2577         /* reset hardware status */
2578         if (ieee->raw_tx) {
2579                 if (ieee->data_hard_resume)
2580                         ieee->data_hard_resume(ieee->dev);
2581
2582                 netif_carrier_on(ieee->dev);
2583         }
2584 }
2585
2586 static void rtllib_start_ibss_wq(void *data)
2587 {
2588         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2589                                      struct rtllib_device, start_ibss_wq);
2590         /* iwconfig mode ad-hoc will schedule this and return
2591          * on the other hand this will block further iwconfig SET
2592          * operations because of the wx_mutex hold.
2593          * Anyway some most set operations set a flag to speed-up
2594          * (abort) this wq (when syncro scanning) before sleeping
2595          * on the mutex
2596          */
2597         if (!ieee->proto_started) {
2598                 netdev_info(ieee->dev, "==========oh driver down return\n");
2599                 return;
2600         }
2601         mutex_lock(&ieee->wx_mutex);
2602
2603         if (ieee->current_network.ssid_len == 0) {
2604                 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2605                 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2606                 ieee->ssid_set = 1;
2607         }
2608
2609         ieee->state = RTLLIB_NOLINK;
2610         ieee->mode = IEEE_G;
2611         /* check if we have this cell in our network list */
2612         rtllib_softmac_check_all_nets(ieee);
2613
2614
2615         /* if not then the state is not linked. Maybe the user switched to
2616          * ad-hoc mode just after being in monitor mode, or just after
2617          * being very few time in managed mode (so the card have had no
2618          * time to scan all the chans..) or we have just run up the iface
2619          * after setting ad-hoc mode. So we have to give another try..
2620          * Here, in ibss mode, should be safe to do this without extra care
2621          * (in bss mode we had to make sure no-one tried to associate when
2622          * we had just checked the ieee->state and we was going to start the
2623          * scan) because in ibss mode the rtllib_new_net function, when
2624          * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2625          * so, at worst, we waste a bit of time to initiate an unneeded syncro
2626          * scan, that will stop at the first round because it sees the state
2627          * associated.
2628          */
2629         if (ieee->state == RTLLIB_NOLINK)
2630                 rtllib_start_scan_syncro(ieee, 0);
2631
2632         /* the network definitively is not here.. create a new cell */
2633         if (ieee->state == RTLLIB_NOLINK) {
2634                 netdev_info(ieee->dev, "creating new IBSS cell\n");
2635                 ieee->current_network.channel = ieee->IbssStartChnl;
2636                 if (!ieee->wap_set)
2637                         eth_random_addr(ieee->current_network.bssid);
2638
2639                 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2640
2641                         ieee->current_network.rates_len = 4;
2642
2643                         ieee->current_network.rates[0] =
2644                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2645                         ieee->current_network.rates[1] =
2646                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2647                         ieee->current_network.rates[2] =
2648                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2649                         ieee->current_network.rates[3] =
2650                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2651
2652                 } else
2653                         ieee->current_network.rates_len = 0;
2654
2655                 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2656                         ieee->current_network.rates_ex_len = 8;
2657
2658                         ieee->current_network.rates_ex[0] =
2659                                                  RTLLIB_OFDM_RATE_6MB;
2660                         ieee->current_network.rates_ex[1] =
2661                                                  RTLLIB_OFDM_RATE_9MB;
2662                         ieee->current_network.rates_ex[2] =
2663                                                  RTLLIB_OFDM_RATE_12MB;
2664                         ieee->current_network.rates_ex[3] =
2665                                                  RTLLIB_OFDM_RATE_18MB;
2666                         ieee->current_network.rates_ex[4] =
2667                                                  RTLLIB_OFDM_RATE_24MB;
2668                         ieee->current_network.rates_ex[5] =
2669                                                  RTLLIB_OFDM_RATE_36MB;
2670                         ieee->current_network.rates_ex[6] =
2671                                                  RTLLIB_OFDM_RATE_48MB;
2672                         ieee->current_network.rates_ex[7] =
2673                                                  RTLLIB_OFDM_RATE_54MB;
2674
2675                         ieee->rate = 108;
2676                 } else {
2677                         ieee->current_network.rates_ex_len = 0;
2678                         ieee->rate = 22;
2679                 }
2680
2681                 ieee->current_network.qos_data.supported = 0;
2682                 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2683                 ieee->current_network.mode = ieee->mode;
2684                 ieee->current_network.atim_window = 0;
2685                 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2686         }
2687
2688         netdev_info(ieee->dev, "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2689         if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2690                 HTUseDefaultSetting(ieee);
2691         else
2692                 ieee->pHTInfo->bCurrentHTSupport = false;
2693
2694         ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2695                               (u8 *)(&ieee->state));
2696
2697         ieee->state = RTLLIB_LINKED;
2698         ieee->link_change(ieee->dev);
2699
2700         HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2701         if (ieee->LedControlHandler != NULL)
2702                 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2703
2704         rtllib_start_send_beacons(ieee);
2705
2706         notify_wx_assoc_event(ieee);
2707
2708         if (ieee->data_hard_resume)
2709                 ieee->data_hard_resume(ieee->dev);
2710
2711         netif_carrier_on(ieee->dev);
2712
2713         mutex_unlock(&ieee->wx_mutex);
2714 }
2715
2716 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2717 {
2718         schedule_delayed_work(&ieee->start_ibss_wq, msecs_to_jiffies(150));
2719 }
2720
2721 /* this is called only in user context, with wx_mutex held */
2722 static void rtllib_start_bss(struct rtllib_device *ieee)
2723 {
2724         unsigned long flags;
2725
2726         if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2727                 if (!ieee->bGlobalDomain)
2728                         return;
2729         }
2730         /* check if we have already found the net we
2731          * are interested in (if any).
2732          * if not (we are disassociated and we are not
2733          * in associating / authenticating phase) start the background scanning.
2734          */
2735         rtllib_softmac_check_all_nets(ieee);
2736
2737         /* ensure no-one start an associating process (thus setting
2738          * the ieee->state to rtllib_ASSOCIATING) while we
2739          * have just checked it and we are going to enable scan.
2740          * The rtllib_new_net function is always called with
2741          * lock held (from both rtllib_softmac_check_all_nets and
2742          * the rx path), so we cannot be in the middle of such function
2743          */
2744         spin_lock_irqsave(&ieee->lock, flags);
2745
2746         if (ieee->state == RTLLIB_NOLINK)
2747                 rtllib_start_scan(ieee);
2748         spin_unlock_irqrestore(&ieee->lock, flags);
2749 }
2750
2751 static void rtllib_link_change_wq(void *data)
2752 {
2753         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2754                                      struct rtllib_device, link_change_wq);
2755         ieee->link_change(ieee->dev);
2756 }
2757 /* called only in userspace context */
2758 void rtllib_disassociate(struct rtllib_device *ieee)
2759 {
2760         netif_carrier_off(ieee->dev);
2761         if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2762                 rtllib_reset_queue(ieee);
2763
2764         if (ieee->data_hard_stop)
2765                 ieee->data_hard_stop(ieee->dev);
2766         if (IS_DOT11D_ENABLE(ieee))
2767                 Dot11d_Reset(ieee);
2768         ieee->state = RTLLIB_NOLINK;
2769         ieee->is_set_key = false;
2770         ieee->wap_set = 0;
2771
2772         schedule_delayed_work(&ieee->link_change_wq, 0);
2773
2774         notify_wx_assoc_event(ieee);
2775 }
2776
2777 static void rtllib_associate_retry_wq(void *data)
2778 {
2779         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2780                                      struct rtllib_device, associate_retry_wq);
2781         unsigned long flags;
2782
2783         mutex_lock(&ieee->wx_mutex);
2784         if (!ieee->proto_started)
2785                 goto exit;
2786
2787         if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2788                 goto exit;
2789
2790         /* until we do not set the state to RTLLIB_NOLINK
2791          * there are no possibility to have someone else trying
2792          * to start an association procedure (we get here with
2793          * ieee->state = RTLLIB_ASSOCIATING).
2794          * When we set the state to RTLLIB_NOLINK it is possible
2795          * that the RX path run an attempt to associate, but
2796          * both rtllib_softmac_check_all_nets and the
2797          * RX path works with ieee->lock held so there are no
2798          * problems. If we are still disassociated then start a scan.
2799          * the lock here is necessary to ensure no one try to start
2800          * an association procedure when we have just checked the
2801          * state and we are going to start the scan.
2802          */
2803         ieee->beinretry = true;
2804         ieee->state = RTLLIB_NOLINK;
2805
2806         rtllib_softmac_check_all_nets(ieee);
2807
2808         spin_lock_irqsave(&ieee->lock, flags);
2809
2810         if (ieee->state == RTLLIB_NOLINK)
2811                 rtllib_start_scan(ieee);
2812         spin_unlock_irqrestore(&ieee->lock, flags);
2813
2814         ieee->beinretry = false;
2815 exit:
2816         mutex_unlock(&ieee->wx_mutex);
2817 }
2818
2819 static struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2820 {
2821         const u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2822
2823         struct sk_buff *skb;
2824         struct rtllib_probe_response *b;
2825
2826         skb = rtllib_probe_resp(ieee, broadcast_addr);
2827
2828         if (!skb)
2829                 return NULL;
2830
2831         b = (struct rtllib_probe_response *) skb->data;
2832         b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2833
2834         return skb;
2835
2836 }
2837
2838 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2839 {
2840         struct sk_buff *skb;
2841         struct rtllib_probe_response *b;
2842
2843         skb = rtllib_get_beacon_(ieee);
2844         if (!skb)
2845                 return NULL;
2846
2847         b = (struct rtllib_probe_response *) skb->data;
2848         b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2849
2850         if (ieee->seq_ctrl[0] == 0xFFF)
2851                 ieee->seq_ctrl[0] = 0;
2852         else
2853                 ieee->seq_ctrl[0]++;
2854
2855         return skb;
2856 }
2857 EXPORT_SYMBOL(rtllib_get_beacon);
2858
2859 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2860                                   u8 shutdown)
2861 {
2862         rtllib_stop_scan_syncro(ieee);
2863         mutex_lock(&ieee->wx_mutex);
2864         rtllib_stop_protocol(ieee, shutdown);
2865         mutex_unlock(&ieee->wx_mutex);
2866 }
2867 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2868
2869
2870 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2871 {
2872         if (!ieee->proto_started)
2873                 return;
2874
2875         if (shutdown) {
2876                 ieee->proto_started = 0;
2877                 ieee->proto_stoppping = 1;
2878                 if (ieee->rtllib_ips_leave != NULL)
2879                         ieee->rtllib_ips_leave(ieee->dev);
2880         }
2881
2882         rtllib_stop_send_beacons(ieee);
2883         del_timer_sync(&ieee->associate_timer);
2884         cancel_delayed_work_sync(&ieee->associate_retry_wq);
2885         cancel_delayed_work_sync(&ieee->start_ibss_wq);
2886         cancel_delayed_work_sync(&ieee->link_change_wq);
2887         rtllib_stop_scan(ieee);
2888
2889         if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2890                 ieee->state = RTLLIB_NOLINK;
2891
2892         if (ieee->state == RTLLIB_LINKED) {
2893                 if (ieee->iw_mode == IW_MODE_INFRA)
2894                         SendDisassociation(ieee, 1, WLAN_REASON_DEAUTH_LEAVING);
2895                 rtllib_disassociate(ieee);
2896         }
2897
2898         if (shutdown) {
2899                 RemoveAllTS(ieee);
2900                 ieee->proto_stoppping = 0;
2901         }
2902         kfree(ieee->assocreq_ies);
2903         ieee->assocreq_ies = NULL;
2904         ieee->assocreq_ies_len = 0;
2905         kfree(ieee->assocresp_ies);
2906         ieee->assocresp_ies = NULL;
2907         ieee->assocresp_ies_len = 0;
2908 }
2909
2910 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2911 {
2912         mutex_lock(&ieee->wx_mutex);
2913         rtllib_start_protocol(ieee);
2914         mutex_unlock(&ieee->wx_mutex);
2915 }
2916 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
2917
2918 void rtllib_start_protocol(struct rtllib_device *ieee)
2919 {
2920         short ch = 0;
2921         int i = 0;
2922
2923         rtllib_update_active_chan_map(ieee);
2924
2925         if (ieee->proto_started)
2926                 return;
2927
2928         ieee->proto_started = 1;
2929
2930         if (ieee->current_network.channel == 0) {
2931                 do {
2932                         ch++;
2933                         if (ch > MAX_CHANNEL_NUMBER)
2934                                 return; /* no channel found */
2935                 } while (!ieee->active_channel_map[ch]);
2936                 ieee->current_network.channel = ch;
2937         }
2938
2939         if (ieee->current_network.beacon_interval == 0)
2940                 ieee->current_network.beacon_interval = 100;
2941
2942         for (i = 0; i < 17; i++) {
2943                 ieee->last_rxseq_num[i] = -1;
2944                 ieee->last_rxfrag_num[i] = -1;
2945                 ieee->last_packet_time[i] = 0;
2946         }
2947
2948         if (ieee->UpdateBeaconInterruptHandler)
2949                 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
2950
2951         ieee->wmm_acm = 0;
2952         /* if the user set the MAC of the ad-hoc cell and then
2953          * switch to managed mode, shall we  make sure that association
2954          * attempts does not fail just because the user provide the essid
2955          * and the nic is still checking for the AP MAC ??
2956          */
2957         if (ieee->iw_mode == IW_MODE_INFRA) {
2958                 rtllib_start_bss(ieee);
2959         } else if (ieee->iw_mode == IW_MODE_ADHOC) {
2960                 if (ieee->UpdateBeaconInterruptHandler)
2961                         ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
2962
2963                 rtllib_start_ibss(ieee);
2964
2965         } else if (ieee->iw_mode == IW_MODE_MASTER) {
2966                 rtllib_start_master_bss(ieee);
2967         } else if (ieee->iw_mode == IW_MODE_MONITOR) {
2968                 rtllib_start_monitor_mode(ieee);
2969         }
2970 }
2971
2972 void rtllib_softmac_init(struct rtllib_device *ieee)
2973 {
2974         int i;
2975
2976         memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
2977
2978         ieee->state = RTLLIB_NOLINK;
2979         for (i = 0; i < 5; i++)
2980                 ieee->seq_ctrl[i] = 0;
2981         ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
2982         if (!ieee->pDot11dInfo)
2983                 netdev_err(ieee->dev, "Can't alloc memory for DOT11D\n");
2984         ieee->LinkDetectInfo.SlotIndex = 0;
2985         ieee->LinkDetectInfo.SlotNum = 2;
2986         ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
2987         ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
2988         ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
2989         ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
2990         ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
2991         ieee->bIsAggregateFrame = false;
2992         ieee->assoc_id = 0;
2993         ieee->queue_stop = 0;
2994         ieee->scanning_continue = 0;
2995         ieee->softmac_features = 0;
2996         ieee->wap_set = 0;
2997         ieee->ssid_set = 0;
2998         ieee->proto_started = 0;
2999         ieee->proto_stoppping = 0;
3000         ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
3001         ieee->rate = 22;
3002         ieee->ps = RTLLIB_PS_DISABLED;
3003         ieee->sta_sleep = LPS_IS_WAKE;
3004
3005         ieee->Regdot11HTOperationalRateSet[0] = 0xff;
3006         ieee->Regdot11HTOperationalRateSet[1] = 0xff;
3007         ieee->Regdot11HTOperationalRateSet[4] = 0x01;
3008
3009         ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3010         ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3011         ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3012
3013         ieee->FirstIe_InScan = false;
3014         ieee->actscanning = false;
3015         ieee->beinretry = false;
3016         ieee->is_set_key = false;
3017         init_mgmt_queue(ieee);
3018
3019         ieee->tx_pending.txb = NULL;
3020
3021         setup_timer(&ieee->associate_timer,
3022                     rtllib_associate_abort_cb,
3023                     (unsigned long) ieee);
3024
3025         setup_timer(&ieee->beacon_timer,
3026                     rtllib_send_beacon_cb,
3027                     (unsigned long) ieee);
3028
3029         INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3030                               (void *)rtllib_link_change_wq, ieee);
3031         INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3032                               (void *)rtllib_start_ibss_wq, ieee);
3033         INIT_WORK_RSL(&ieee->associate_complete_wq,
3034                       (void *)rtllib_associate_complete_wq, ieee);
3035         INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3036                               (void *)rtllib_associate_procedure_wq, ieee);
3037         INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3038                               (void *)rtllib_softmac_scan_wq, ieee);
3039         INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3040                               (void *)rtllib_associate_retry_wq, ieee);
3041         INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3042                       ieee);
3043
3044         mutex_init(&ieee->wx_mutex);
3045         mutex_init(&ieee->scan_mutex);
3046         mutex_init(&ieee->ips_mutex);
3047
3048         spin_lock_init(&ieee->mgmt_tx_lock);
3049         spin_lock_init(&ieee->beacon_lock);
3050
3051         tasklet_init(&ieee->ps_task,
3052              (void(*)(unsigned long)) rtllib_sta_ps,
3053              (unsigned long)ieee);
3054
3055 }
3056
3057 void rtllib_softmac_free(struct rtllib_device *ieee)
3058 {
3059         mutex_lock(&ieee->wx_mutex);
3060         kfree(ieee->pDot11dInfo);
3061         ieee->pDot11dInfo = NULL;
3062         del_timer_sync(&ieee->associate_timer);
3063
3064         cancel_delayed_work_sync(&ieee->associate_retry_wq);
3065         cancel_delayed_work_sync(&ieee->associate_procedure_wq);
3066         cancel_delayed_work_sync(&ieee->softmac_scan_wq);
3067         cancel_delayed_work_sync(&ieee->start_ibss_wq);
3068         cancel_delayed_work_sync(&ieee->hw_wakeup_wq);
3069         cancel_delayed_work_sync(&ieee->hw_sleep_wq);
3070         cancel_delayed_work_sync(&ieee->link_change_wq);
3071         cancel_work_sync(&ieee->associate_complete_wq);
3072         cancel_work_sync(&ieee->ips_leave_wq);
3073         cancel_work_sync(&ieee->wx_sync_scan_wq);
3074         mutex_unlock(&ieee->wx_mutex);
3075         tasklet_kill(&ieee->ps_task);
3076 }
3077
3078 /********************************************************
3079  * Start of WPA code.                                   *
3080  * this is stolen from the ipw2200 driver               *
3081  ********************************************************/
3082
3083
3084 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3085 {
3086         /* This is called when wpa_supplicant loads and closes the driver
3087          * interface.
3088          */
3089         netdev_info(ieee->dev, "%s WPA\n", value ? "enabling" : "disabling");
3090         ieee->wpa_enabled = value;
3091         eth_zero_addr(ieee->ap_mac_addr);
3092         return 0;
3093 }
3094
3095
3096 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3097                                    int wpa_ie_len)
3098 {
3099         /* make sure WPA is enabled */
3100         rtllib_wpa_enable(ieee, 1);
3101
3102         rtllib_disassociate(ieee);
3103 }
3104
3105
3106 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3107 {
3108
3109         int ret = 0;
3110
3111         switch (command) {
3112         case IEEE_MLME_STA_DEAUTH:
3113                 break;
3114
3115         case IEEE_MLME_STA_DISASSOC:
3116                 rtllib_disassociate(ieee);
3117                 break;
3118
3119         default:
3120                 netdev_info(ieee->dev, "Unknown MLME request: %d\n", command);
3121                 ret = -EOPNOTSUPP;
3122         }
3123
3124         return ret;
3125 }
3126
3127
3128 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3129                               struct ieee_param *param, int plen)
3130 {
3131         u8 *buf;
3132
3133         if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3134             (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3135                 return -EINVAL;
3136
3137         if (param->u.wpa_ie.len) {
3138                 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
3139                               GFP_KERNEL);
3140                 if (buf == NULL)
3141                         return -ENOMEM;
3142
3143                 kfree(ieee->wpa_ie);
3144                 ieee->wpa_ie = buf;
3145                 ieee->wpa_ie_len = param->u.wpa_ie.len;
3146         } else {
3147                 kfree(ieee->wpa_ie);
3148                 ieee->wpa_ie = NULL;
3149                 ieee->wpa_ie_len = 0;
3150         }
3151
3152         rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3153         return 0;
3154 }
3155
3156 #define AUTH_ALG_OPEN_SYSTEM                    0x1
3157 #define AUTH_ALG_SHARED_KEY                     0x2
3158 #define AUTH_ALG_LEAP                           0x4
3159 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3160 {
3161
3162         struct rtllib_security sec = {
3163                 .flags = SEC_AUTH_MODE,
3164         };
3165
3166         if (value & AUTH_ALG_SHARED_KEY) {
3167                 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3168                 ieee->open_wep = 0;
3169                 ieee->auth_mode = 1;
3170         } else if (value & AUTH_ALG_OPEN_SYSTEM) {
3171                 sec.auth_mode = WLAN_AUTH_OPEN;
3172                 ieee->open_wep = 1;
3173                 ieee->auth_mode = 0;
3174         } else if (value & AUTH_ALG_LEAP) {
3175                 sec.auth_mode = WLAN_AUTH_LEAP  >> 6;
3176                 ieee->open_wep = 1;
3177                 ieee->auth_mode = 2;
3178         }
3179
3180
3181         if (ieee->set_security)
3182                 ieee->set_security(ieee->dev, &sec);
3183
3184         return 0;
3185 }
3186
3187 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3188 {
3189         int ret = 0;
3190         unsigned long flags;
3191
3192         switch (name) {
3193         case IEEE_PARAM_WPA_ENABLED:
3194                 ret = rtllib_wpa_enable(ieee, value);
3195                 break;
3196
3197         case IEEE_PARAM_TKIP_COUNTERMEASURES:
3198                 ieee->tkip_countermeasures = value;
3199                 break;
3200
3201         case IEEE_PARAM_DROP_UNENCRYPTED:
3202         {
3203                 /* HACK:
3204                  *
3205                  * wpa_supplicant calls set_wpa_enabled when the driver
3206                  * is loaded and unloaded, regardless of if WPA is being
3207                  * used.  No other calls are made which can be used to
3208                  * determine if encryption will be used or not prior to
3209                  * association being expected.  If encryption is not being
3210                  * used, drop_unencrypted is set to false, else true -- we
3211                  * can use this to determine if the CAP_PRIVACY_ON bit should
3212                  * be set.
3213                  */
3214                 struct rtllib_security sec = {
3215                         .flags = SEC_ENABLED,
3216                         .enabled = value,
3217                 };
3218                 ieee->drop_unencrypted = value;
3219                 /* We only change SEC_LEVEL for open mode. Others
3220                  * are set by ipw_wpa_set_encryption.
3221                  */
3222                 if (!value) {
3223                         sec.flags |= SEC_LEVEL;
3224                         sec.level = SEC_LEVEL_0;
3225                 } else {
3226                         sec.flags |= SEC_LEVEL;
3227                         sec.level = SEC_LEVEL_1;
3228                 }
3229                 if (ieee->set_security)
3230                         ieee->set_security(ieee->dev, &sec);
3231                 break;
3232         }
3233
3234         case IEEE_PARAM_PRIVACY_INVOKED:
3235                 ieee->privacy_invoked = value;
3236                 break;
3237
3238         case IEEE_PARAM_AUTH_ALGS:
3239                 ret = rtllib_wpa_set_auth_algs(ieee, value);
3240                 break;
3241
3242         case IEEE_PARAM_IEEE_802_1X:
3243                 ieee->ieee802_1x = value;
3244                 break;
3245         case IEEE_PARAM_WPAX_SELECT:
3246                 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3247                 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3248                 break;
3249
3250         default:
3251                 netdev_info(ieee->dev, "Unknown WPA param: %d\n", name);
3252                 ret = -EOPNOTSUPP;
3253         }
3254
3255         return ret;
3256 }
3257
3258 /* implementation borrowed from hostap driver */
3259 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3260                                   struct ieee_param *param, int param_len,
3261                                   u8 is_mesh)
3262 {
3263         int ret = 0;
3264         struct lib80211_crypto_ops *ops;
3265         struct lib80211_crypt_data **crypt;
3266
3267         struct rtllib_security sec = {
3268                 .flags = 0,
3269         };
3270
3271         param->u.crypt.err = 0;
3272         param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3273
3274         if (param_len !=
3275             (int) ((char *) param->u.crypt.key - (char *) param) +
3276             param->u.crypt.key_len) {
3277                 netdev_info(ieee->dev, "Len mismatch %d, %d\n", param_len,
3278                             param->u.crypt.key_len);
3279                 return -EINVAL;
3280         }
3281         if (is_broadcast_ether_addr(param->sta_addr)) {
3282                 if (param->u.crypt.idx >= NUM_WEP_KEYS)
3283                         return -EINVAL;
3284                 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
3285         } else {
3286                 return -EINVAL;
3287         }
3288
3289         if (strcmp(param->u.crypt.alg, "none") == 0) {
3290                 if (crypt) {
3291                         sec.enabled = 0;
3292                         sec.level = SEC_LEVEL_0;
3293                         sec.flags |= SEC_ENABLED | SEC_LEVEL;
3294                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3295                 }
3296                 goto done;
3297         }
3298         sec.enabled = 1;
3299         sec.flags |= SEC_ENABLED;
3300
3301         /* IPW HW cannot build TKIP MIC, host decryption still needed. */
3302         if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3303             strcmp(param->u.crypt.alg, "R-TKIP"))
3304                 goto skip_host_crypt;
3305
3306         ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3307         if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3308                 request_module("rtllib_crypt_wep");
3309                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3310         } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3311                 request_module("rtllib_crypt_tkip");
3312                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3313         } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3314                 request_module("rtllib_crypt_ccmp");
3315                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3316         }
3317         if (ops == NULL) {
3318                 netdev_info(ieee->dev, "unknown crypto alg '%s'\n",
3319                             param->u.crypt.alg);
3320                 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3321                 ret = -EINVAL;
3322                 goto done;
3323         }
3324         if (*crypt == NULL || (*crypt)->ops != ops) {
3325                 struct lib80211_crypt_data *new_crypt;
3326
3327                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3328
3329                 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
3330                 if (new_crypt == NULL) {
3331                         ret = -ENOMEM;
3332                         goto done;
3333                 }
3334                 new_crypt->ops = ops;
3335                 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
3336                         new_crypt->priv =
3337                                 new_crypt->ops->init(param->u.crypt.idx);
3338
3339                 if (new_crypt->priv == NULL) {
3340                         kfree(new_crypt);
3341                         param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3342                         ret = -EINVAL;
3343                         goto done;
3344                 }
3345
3346                 *crypt = new_crypt;
3347         }
3348
3349         if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3350             (*crypt)->ops->set_key(param->u.crypt.key,
3351             param->u.crypt.key_len, param->u.crypt.seq,
3352             (*crypt)->priv) < 0) {
3353                 netdev_info(ieee->dev, "key setting failed\n");
3354                 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3355                 ret = -EINVAL;
3356                 goto done;
3357         }
3358
3359  skip_host_crypt:
3360         if (param->u.crypt.set_tx) {
3361                 ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
3362                 sec.active_key = param->u.crypt.idx;
3363                 sec.flags |= SEC_ACTIVE_KEY;
3364         } else
3365                 sec.flags &= ~SEC_ACTIVE_KEY;
3366
3367         if (param->u.crypt.alg != NULL) {
3368                 memcpy(sec.keys[param->u.crypt.idx],
3369                        param->u.crypt.key,
3370                        param->u.crypt.key_len);
3371                 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3372                 sec.flags |= (1 << param->u.crypt.idx);
3373
3374                 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3375                         sec.flags |= SEC_LEVEL;
3376                         sec.level = SEC_LEVEL_1;
3377                 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3378                         sec.flags |= SEC_LEVEL;
3379                         sec.level = SEC_LEVEL_2;
3380                 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3381                         sec.flags |= SEC_LEVEL;
3382                         sec.level = SEC_LEVEL_3;
3383                 }
3384         }
3385  done:
3386         if (ieee->set_security)
3387                 ieee->set_security(ieee->dev, &sec);
3388
3389         /* Do not reset port if card is in Managed mode since resetting will
3390          * generate new IEEE 802.11 authentication which may end up in looping
3391          * with IEEE 802.1X.  If your hardware requires a reset after WEP
3392          * configuration (for example... Prism2), implement the reset_port in
3393          * the callbacks structures used to initialize the 802.11 stack.
3394          */
3395         if (ieee->reset_on_keychange &&
3396             ieee->iw_mode != IW_MODE_INFRA &&
3397             ieee->reset_port &&
3398             ieee->reset_port(ieee->dev)) {
3399                 netdev_info(ieee->dev, "reset_port failed\n");
3400                 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3401                 return -EINVAL;
3402         }
3403
3404         return ret;
3405 }
3406
3407 static inline struct sk_buff *
3408 rtllib_disauth_skb(struct rtllib_network *beacon,
3409                    struct rtllib_device *ieee, u16 asRsn)
3410 {
3411         struct sk_buff *skb;
3412         struct rtllib_disauth *disauth;
3413         int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3414
3415         skb = dev_alloc_skb(len);
3416         if (!skb)
3417                 return NULL;
3418
3419         skb_reserve(skb, ieee->tx_headroom);
3420
3421         disauth = (struct rtllib_disauth *) skb_put(skb,
3422                   sizeof(struct rtllib_disauth));
3423         disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3424         disauth->header.duration_id = 0;
3425
3426         ether_addr_copy(disauth->header.addr1, beacon->bssid);
3427         ether_addr_copy(disauth->header.addr2, ieee->dev->dev_addr);
3428         ether_addr_copy(disauth->header.addr3, beacon->bssid);
3429
3430         disauth->reason = cpu_to_le16(asRsn);
3431         return skb;
3432 }
3433
3434 static inline struct sk_buff *
3435 rtllib_disassociate_skb(struct rtllib_network *beacon,
3436                         struct rtllib_device *ieee, u16 asRsn)
3437 {
3438         struct sk_buff *skb;
3439         struct rtllib_disassoc *disass;
3440         int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3441
3442         skb = dev_alloc_skb(len);
3443
3444         if (!skb)
3445                 return NULL;
3446
3447         skb_reserve(skb, ieee->tx_headroom);
3448
3449         disass = (struct rtllib_disassoc *) skb_put(skb,
3450                                          sizeof(struct rtllib_disassoc));
3451         disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3452         disass->header.duration_id = 0;
3453
3454         ether_addr_copy(disass->header.addr1, beacon->bssid);
3455         ether_addr_copy(disass->header.addr2, ieee->dev->dev_addr);
3456         ether_addr_copy(disass->header.addr3, beacon->bssid);
3457
3458         disass->reason = cpu_to_le16(asRsn);
3459         return skb;
3460 }
3461
3462 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3463 {
3464         struct rtllib_network *beacon = &ieee->current_network;
3465         struct sk_buff *skb;
3466
3467         if (deauth)
3468                 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3469         else
3470                 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3471
3472         if (skb)
3473                 softmac_mgmt_xmit(skb, ieee);
3474 }
3475
3476 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3477 {
3478         static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3479         static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3480         int wpa_ie_len = ieee->wpa_ie_len;
3481         struct lib80211_crypt_data *crypt;
3482         int encrypt;
3483
3484         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3485         encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3486                   || (ieee->host_encrypt && crypt && crypt->ops &&
3487                   (strcmp(crypt->ops->name, "R-WEP") == 0));
3488
3489         /* simply judge  */
3490         if (encrypt && (wpa_ie_len == 0)) {
3491                 return SEC_ALG_WEP;
3492         } else if ((wpa_ie_len != 0)) {
3493                 if (((ieee->wpa_ie[0] == 0xdd) &&
3494                     (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3495                     ((ieee->wpa_ie[0] == 0x30) &&
3496                     (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3497                         return SEC_ALG_CCMP;
3498                 else
3499                         return SEC_ALG_TKIP;
3500         } else {
3501                 return SEC_ALG_NONE;
3502         }
3503 }
3504
3505 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3506                                 u8 is_mesh)
3507 {
3508         struct ieee_param *param;
3509         int ret = 0;
3510
3511         mutex_lock(&ieee->wx_mutex);
3512
3513         if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3514                 ret = -EINVAL;
3515                 goto out;
3516         }
3517
3518         param = memdup_user(p->pointer, p->length);
3519         if (IS_ERR(param)) {
3520                 ret = PTR_ERR(param);
3521                 goto out;
3522         }
3523
3524         switch (param->cmd) {
3525         case IEEE_CMD_SET_WPA_PARAM:
3526                 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3527                                         param->u.wpa_param.value);
3528                 break;
3529
3530         case IEEE_CMD_SET_WPA_IE:
3531                 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3532                 break;
3533
3534         case IEEE_CMD_SET_ENCRYPTION:
3535                 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3536                 break;
3537
3538         case IEEE_CMD_MLME:
3539                 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3540                                    param->u.mlme.reason_code);
3541                 break;
3542
3543         default:
3544                 netdev_info(ieee->dev, "Unknown WPA supplicant request: %d\n",
3545                             param->cmd);
3546                 ret = -EOPNOTSUPP;
3547                 break;
3548         }
3549
3550         if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3551                 ret = -EFAULT;
3552
3553         kfree(param);
3554 out:
3555         mutex_unlock(&ieee->wx_mutex);
3556
3557         return ret;
3558 }
3559 EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
3560
3561 static void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3562 {
3563         u8      OpMode;
3564         u8      i;
3565         bool    bFilterOutNonAssociatedBSSID = false;
3566
3567         rtllib->state = RTLLIB_NOLINK;
3568
3569         for (i = 0; i < 6; i++)
3570                 rtllib->current_network.bssid[i] = 0x55;
3571
3572         rtllib->OpMode = RT_OP_MODE_NO_LINK;
3573         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3574                                 rtllib->current_network.bssid);
3575         OpMode = RT_OP_MODE_NO_LINK;
3576         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3577         rtllib_stop_send_beacons(rtllib);
3578
3579         bFilterOutNonAssociatedBSSID = false;
3580         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3581                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3582         notify_wx_assoc_event(rtllib);
3583
3584 }
3585
3586 static void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib,
3587                                            u8 *asSta, u8 asRsn)
3588 {
3589         u8 i;
3590         u8      OpMode;
3591
3592         RemovePeerTS(rtllib, asSta);
3593
3594         if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) {
3595                 rtllib->state = RTLLIB_NOLINK;
3596
3597                 for (i = 0; i < 6; i++)
3598                         rtllib->current_network.bssid[i] = 0x22;
3599                 OpMode = RT_OP_MODE_NO_LINK;
3600                 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3601                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3602                                         (u8 *)(&OpMode));
3603                 rtllib_disassociate(rtllib);
3604
3605                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3606                                         rtllib->current_network.bssid);
3607
3608         }
3609
3610 }
3611
3612 static void
3613 rtllib_MgntDisconnectAP(
3614         struct rtllib_device *rtllib,
3615         u8 asRsn
3616 )
3617 {
3618         bool bFilterOutNonAssociatedBSSID = false;
3619
3620         bFilterOutNonAssociatedBSSID = false;
3621         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3622                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3623         rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3624                                        asRsn);
3625
3626         rtllib->state = RTLLIB_NOLINK;
3627 }
3628
3629 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3630 {
3631         if (rtllib->ps != RTLLIB_PS_DISABLED)
3632                 rtllib->sta_wake_up(rtllib->dev);
3633
3634         if (rtllib->state == RTLLIB_LINKED) {
3635                 if (rtllib->iw_mode == IW_MODE_ADHOC)
3636                         rtllib_MgntDisconnectIBSS(rtllib);
3637                 if (rtllib->iw_mode == IW_MODE_INFRA)
3638                         rtllib_MgntDisconnectAP(rtllib, asRsn);
3639
3640         }
3641
3642         return true;
3643 }
3644 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3645
3646 void notify_wx_assoc_event(struct rtllib_device *ieee)
3647 {
3648         union iwreq_data wrqu;
3649
3650         if (ieee->cannot_notify)
3651                 return;
3652
3653         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3654         if (ieee->state == RTLLIB_LINKED)
3655                 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3656                        ETH_ALEN);
3657         else {
3658
3659                 netdev_info(ieee->dev, "%s(): Tell user space disconnected\n",
3660                             __func__);
3661                 eth_zero_addr(wrqu.ap_addr.sa_data);
3662         }
3663         wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3664 }
3665 EXPORT_SYMBOL(notify_wx_assoc_event);