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