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 "dot11d.h"
  24
  25 short rtllib_is_54g(struct rtllib_network *net)
  26 {
  27         return (net->rates_ex_len > 0) || (net->rates_len > 4);
  28 }
  29
  30 short rtllib_is_shortslot(const struct rtllib_network *net)
  31 {
  32         return net->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME;
  33 }
  34
  35 /* returns the total length needed for placing the RATE MFIE
  36  * tag and the EXTENDED RATE MFIE tag if needed.
  37  * It encludes two bytes per tag for the tag itself and its len
  38  */
  39 static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
  40 {
  41         unsigned int rate_len = 0;
  42
  43         if (ieee->modulation & RTLLIB_CCK_MODULATION)
  44                 rate_len = RTLLIB_CCK_RATE_LEN + 2;
  45
  46         if (ieee->modulation & RTLLIB_OFDM_MODULATION)
  47
  48                 rate_len += RTLLIB_OFDM_RATE_LEN + 2;
  49
  50         return rate_len;
  51 }
  52
  53 /* place the MFIE rate, tag to the memory (double) pointed.
  54  * Then it updates the pointer so that
  55  * it points after the new MFIE tag added.
  56  */
  57 static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
  58 {
  59         u8 *tag = *tag_p;
  60
  61         if (ieee->modulation & RTLLIB_CCK_MODULATION) {
  62                 *tag++ = MFIE_TYPE_RATES;
  63                 *tag++ = 4;
  64                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
  65                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
  66                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
  67                 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
  68         }
  69
  70         /* We may add an option for custom rates that specific HW
  71          * might support */
  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         *tag_p = tag;
  94 }
  95
  96 static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
  97 {
  98         u8 *tag = *tag_p;
  99
 100         *tag++ = MFIE_TYPE_GENERIC;
 101         *tag++ = 7;
 102         *tag++ = 0x00;
 103         *tag++ = 0x50;
 104         *tag++ = 0xf2;
 105         *tag++ = 0x02;
 106         *tag++ = 0x00;
 107         *tag++ = 0x01;
 108         *tag++ = MAX_SP_Len;
 109         *tag_p = tag;
 110 }
 111
 112 void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
 113 {
 114         u8 *tag = *tag_p;
 115
 116         *tag++ = MFIE_TYPE_GENERIC;
 117         *tag++ = 7;
 118         *tag++ = 0x00;
 119         *tag++ = 0xe0;
 120         *tag++ = 0x4c;
 121         *tag++ = 0x01;
 122         *tag++ = 0x02;
 123         *tag++ = 0x11;
 124         *tag++ = 0x00;
 125
 126         *tag_p = tag;
 127         printk(KERN_ALERT "This is enable turbo mode IE process\n");
 128 }
 129
 130 static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
 131 {
 132         int nh;
 133         nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
 134
 135 /*
 136  * if the queue is full but we have newer frames then
 137  * just overwrites the oldest.
 138  *
 139  * if (nh == ieee->mgmt_queue_tail)
 140  *              return -1;
 141  */
 142         ieee->mgmt_queue_head = nh;
 143         ieee->mgmt_queue_ring[nh] = skb;
 144
 145 }
 146
 147 static struct sk_buff *dequeue_mgmt(struct rtllib_device *ieee)
 148 {
 149         struct sk_buff *ret;
 150
 151         if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head)
 152                 return NULL;
 153
 154         ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail];
 155
 156         ieee->mgmt_queue_tail =
 157                 (ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM;
 158
 159         return ret;
 160 }
 161
 162 static void init_mgmt_queue(struct rtllib_device *ieee)
 163 {
 164         ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
 165 }
 166
 167
 168 u8
 169 MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
 170 {
 171         u16     i;
 172         u8      QueryRate = 0;
 173         u8      BasicRate;
 174
 175
 176         for (i = 0; i < ieee->current_network.rates_len; i++) {
 177                 BasicRate = ieee->current_network.rates[i]&0x7F;
 178                 if (!rtllib_is_cck_rate(BasicRate)) {
 179                         if (QueryRate == 0) {
 180                                 QueryRate = BasicRate;
 181                         } else {
 182                                 if (BasicRate < QueryRate)
 183                                         QueryRate = BasicRate;
 184                         }
 185                 }
 186         }
 187
 188         if (QueryRate == 0) {
 189                 QueryRate = 12;
 190                 printk(KERN_INFO "No BasicRate found!!\n");
 191         }
 192         return QueryRate;
 193 }
 194
 195 u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
 196 {
 197         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 198         u8 rate;
 199
 200         if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
 201                 rate = 0x0c;
 202         else
 203                 rate = ieee->basic_rate & 0x7f;
 204
 205         if (rate == 0) {
 206                 if (ieee->mode == IEEE_A ||
 207                    ieee->mode == IEEE_N_5G ||
 208                    (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
 209                         rate = 0x0c;
 210                 else
 211                         rate = 0x02;
 212         }
 213
 214         return rate;
 215 }
 216
 217 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
 218 {
 219         unsigned long flags;
 220         short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
 221         struct rtllib_hdr_3addr  *header =
 222                 (struct rtllib_hdr_3addr  *) skb->data;
 223
 224         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
 225         spin_lock_irqsave(&ieee->lock, flags);
 226
 227         /* called with 2nd param 0, no mgmt lock required */
 228         rtllib_sta_wakeup(ieee, 0);
 229
 230         if (header->frame_ctl == RTLLIB_STYPE_BEACON)
 231                 tcb_desc->queue_index = BEACON_QUEUE;
 232         else
 233                 tcb_desc->queue_index = MGNT_QUEUE;
 234
 235         if (ieee->disable_mgnt_queue)
 236                 tcb_desc->queue_index = HIGH_QUEUE;
 237
 238         tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
 239         tcb_desc->RATRIndex = 7;
 240         tcb_desc->bTxDisableRateFallBack = 1;
 241         tcb_desc->bTxUseDriverAssingedRate = 1;
 242         if (single) {
 243                 if (ieee->queue_stop) {
 244                         enqueue_mgmt(ieee, skb);
 245                 } else {
 246                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
 247
 248                         if (ieee->seq_ctrl[0] == 0xFFF)
 249                                 ieee->seq_ctrl[0] = 0;
 250                         else
 251                                 ieee->seq_ctrl[0]++;
 252
 253                         /* avoid watchdog triggers */
 254                         ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
 255                                                            ieee->basic_rate);
 256                 }
 257
 258                 spin_unlock_irqrestore(&ieee->lock, flags);
 259         } else {
 260                 spin_unlock_irqrestore(&ieee->lock, flags);
 261                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
 262
 263                 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 264
 265                 if (ieee->seq_ctrl[0] == 0xFFF)
 266                         ieee->seq_ctrl[0] = 0;
 267                 else
 268                         ieee->seq_ctrl[0]++;
 269
 270                 /* check whether the managed packet queued greater than 5 */
 271                 if (!ieee->check_nic_enough_desc(ieee->dev, tcb_desc->queue_index) ||
 272                     (skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) != 0) ||
 273                     (ieee->queue_stop)) {
 274                         /* insert the skb packet to the management queue */
 275                         /* as for the completion function, it does not need
 276                          * to check it any more.
 277                          * */
 278                         printk(KERN_INFO "%s():insert to waitqueue, queue_index"
 279                                ":%d!\n", __func__, tcb_desc->queue_index);
 280                         skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
 281                                        skb);
 282                 } else {
 283                         ieee->softmac_hard_start_xmit(skb, ieee->dev);
 284                 }
 285                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
 286         }
 287 }
 288
 289 inline void softmac_ps_mgmt_xmit(struct sk_buff *skb,
 290                 struct rtllib_device *ieee)
 291 {
 292         short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
 293         struct rtllib_hdr_3addr  *header =
 294                 (struct rtllib_hdr_3addr  *) skb->data;
 295         u16 fc, type, stype;
 296         struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
 297
 298         fc = header->frame_ctl;
 299         type = WLAN_FC_GET_TYPE(fc);
 300         stype = WLAN_FC_GET_STYPE(fc);
 301
 302
 303         if (stype != RTLLIB_STYPE_PSPOLL)
 304                 tcb_desc->queue_index = MGNT_QUEUE;
 305         else
 306                 tcb_desc->queue_index = HIGH_QUEUE;
 307
 308         if (ieee->disable_mgnt_queue)
 309                 tcb_desc->queue_index = HIGH_QUEUE;
 310
 311
 312         tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
 313         tcb_desc->RATRIndex = 7;
 314         tcb_desc->bTxDisableRateFallBack = 1;
 315         tcb_desc->bTxUseDriverAssingedRate = 1;
 316         if (single) {
 317                 if (type != RTLLIB_FTYPE_CTL) {
 318                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 319
 320                         if (ieee->seq_ctrl[0] == 0xFFF)
 321                                 ieee->seq_ctrl[0] = 0;
 322                         else
 323                                 ieee->seq_ctrl[0]++;
 324
 325                 }
 326                 /* avoid watchdog triggers */
 327                 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
 328                                                    ieee->basic_rate);
 329
 330         } else {
 331                 if (type != RTLLIB_FTYPE_CTL) {
 332                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
 333
 334                         if (ieee->seq_ctrl[0] == 0xFFF)
 335                                 ieee->seq_ctrl[0] = 0;
 336                         else
 337                                 ieee->seq_ctrl[0]++;
 338                 }
 339                 ieee->softmac_hard_start_xmit(skb, ieee->dev);
 340
 341         }
 342 }
 343
 344 inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
 345 {
 346         unsigned int len, rate_len;
 347         u8 *tag;
 348         struct sk_buff *skb;
 349         struct rtllib_probe_request *req;
 350
 351         len = ieee->current_network.ssid_len;
 352
 353         rate_len = rtllib_MFIE_rate_len(ieee);
 354
 355         skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
 356                             2 + len + rate_len + ieee->tx_headroom);
 357
 358         if (!skb)
 359                 return NULL;
 360
 361         skb_reserve(skb, ieee->tx_headroom);
 362
 363         req = (struct rtllib_probe_request *) skb_put(skb,
 364               sizeof(struct rtllib_probe_request));
 365         req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
 366         req->header.duration_id = 0;
 367
 368         memset(req->header.addr1, 0xff, ETH_ALEN);
 369         memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
 370         memset(req->header.addr3, 0xff, ETH_ALEN);
 371
 372         tag = (u8 *) skb_put(skb, len + 2 + rate_len);
 373
 374         *tag++ = MFIE_TYPE_SSID;
 375         *tag++ = len;
 376         memcpy(tag, ieee->current_network.ssid, len);
 377         tag += len;
 378
 379         rtllib_MFIE_Brate(ieee, &tag);
 380         rtllib_MFIE_Grate(ieee, &tag);
 381
 382         return skb;
 383 }
 384
 385 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
 386
 387 static void rtllib_send_beacon(struct rtllib_device *ieee)
 388 {
 389         struct sk_buff *skb;
 390         if (!ieee->ieee_up)
 391                 return;
 392         skb = rtllib_get_beacon_(ieee);
 393
 394         if (skb) {
 395                 softmac_mgmt_xmit(skb, ieee);
 396                 ieee->softmac_stats.tx_beacons++;
 397         }
 398
 399         if (ieee->beacon_txing && ieee->ieee_up)
 400                 mod_timer(&ieee->beacon_timer, jiffies +
 401                           (MSECS(ieee->current_network.beacon_interval - 5)));
 402 }
 403
 404
 405 static void rtllib_send_beacon_cb(unsigned long _ieee)
 406 {
 407         struct rtllib_device *ieee =
 408                 (struct rtllib_device *) _ieee;
 409         unsigned long flags;
 410
 411         spin_lock_irqsave(&ieee->beacon_lock, flags);
 412         rtllib_send_beacon(ieee);
 413         spin_unlock_irqrestore(&ieee->beacon_lock, flags);
 414 }
 415
 416 /*
 417  * Description:
 418  *            Enable network monitor mode, all rx packets will be received.
 419  */
 420 void rtllib_EnableNetMonitorMode(struct net_device *dev,
 421                 bool bInitState)
 422 {
 423         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 424
 425         printk(KERN_INFO "========>Enter Monitor Mode\n");
 426
 427         ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
 428 }
 429
 430
 431 /*
 432  *      Description:
 433  *            Disable network network monitor mode, only packets destinated to
 434  *            us will be received.
 435  */
 436 void rtllib_DisableNetMonitorMode(struct net_device *dev,
 437                 bool bInitState)
 438 {
 439         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 440
 441         printk(KERN_INFO "========>Exit Monitor Mode\n");
 442
 443         ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
 444 }
 445
 446
 447 /*
 448  * Description:
 449  * This enables the specialized promiscuous mode required by Intel.
 450  * In this mode, Intel intends to hear traffics from/to other STAs in the
 451  * same BSS. Therefore we don't have to disable checking BSSID and we only need
 452  * to allow all dest. BUT: if we enable checking BSSID then we can't recv
 453  * packets from other STA.
 454  */
 455 void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
 456                 bool bInitState)
 457 {
 458         bool bFilterOutNonAssociatedBSSID = false;
 459
 460         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 461
 462         printk(KERN_INFO "========>Enter Intel Promiscuous Mode\n");
 463
 464         ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
 465         ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
 466                              (u8 *)&bFilterOutNonAssociatedBSSID);
 467
 468         ieee->bNetPromiscuousMode = true;
 469 }
 470 EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode);
 471
 472
 473 /*
 474  * Description:
 475  *            This disables the specialized promiscuous mode required by Intel.
 476  *            See MgntEnableIntelPromiscuousMode for detail.
 477  */
 478 void rtllib_DisableIntelPromiscuousMode(struct net_device *dev,
 479                 bool bInitState)
 480 {
 481         bool bFilterOutNonAssociatedBSSID = true;
 482
 483         struct rtllib_device *ieee = netdev_priv_rsl(dev);
 484
 485         printk(KERN_INFO "========>Exit Intel Promiscuous Mode\n");
 486
 487         ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
 488         ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
 489                              (u8 *)&bFilterOutNonAssociatedBSSID);
 490
 491         ieee->bNetPromiscuousMode = false;
 492 }
 493 EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode);
 494
 495 static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh)
 496 {
 497         struct sk_buff *skb;
 498         skb = rtllib_probe_req(ieee);
 499         if (skb) {
 500                 softmac_mgmt_xmit(skb, ieee);
 501                 ieee->softmac_stats.tx_probe_rq++;
 502         }
 503 }
 504
 505
 506 void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh)
 507 {
 508         if (ieee->active_scan && (ieee->softmac_features &
 509             IEEE_SOFTMAC_PROBERQ)) {
 510                 rtllib_send_probe(ieee, 0);
 511                 rtllib_send_probe(ieee, 0);
 512         }
 513 }
 514
 515 static void rtllib_softmac_hint11d_wq(void *data)
 516 {
 517 }
 518
 519 void rtllib_update_active_chan_map(struct rtllib_device *ieee)
 520 {
 521         memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map,
 522                MAX_CHANNEL_NUMBER+1);
 523 }
 524
 525 /* this performs syncro scan blocking the caller until all channels
 526  * in the allowed channel map has been checked.
 527  */
 528 void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
 529 {
 530         union iwreq_data wrqu;
 531         short ch = 0;
 532
 533         rtllib_update_active_chan_map(ieee);
 534
 535         ieee->be_scan_inprogress = true;
 536
 537         down(&ieee->scan_sem);
 538
 539         while (1) {
 540                 do {
 541                         ch++;
 542                         if (ch > MAX_CHANNEL_NUMBER)
 543                                 goto out; /* scan completed */
 544                 } while (!ieee->active_channel_map[ch]);
 545
 546                 /* this fuction can be called in two situations
 547                  * 1- We have switched to ad-hoc mode and we are
 548                  *    performing a complete syncro scan before conclude
 549                  *    there are no interesting cell and to create a
 550                  *    new one. In this case the link state is
 551                  *    RTLLIB_NOLINK until we found an interesting cell.
 552                  *    If so the ieee8021_new_net, called by the RX path
 553                  *    will set the state to RTLLIB_LINKED, so we stop
 554                  *    scanning
 555                  * 2- We are linked and the root uses run iwlist scan.
 556                  *    So we switch to RTLLIB_LINKED_SCANNING to remember
 557                  *    that we are still logically linked (not interested in
 558                  *    new network events, despite for updating the net list,
 559                  *    but we are temporarly 'unlinked' as the driver shall
 560                  *    not filter RX frames and the channel is changing.
 561                  * So the only situation in which are interested is to check
 562                  * if the state become LINKED because of the #1 situation
 563                  */
 564
 565                 if (ieee->state == RTLLIB_LINKED)
 566                         goto out;
 567                 if (ieee->sync_scan_hurryup) {
 568                         printk(KERN_INFO "============>sync_scan_hurryup out\n");
 569                         goto out;
 570                 }
 571
 572                 ieee->set_chan(ieee->dev, ch);
 573                 if (ieee->active_channel_map[ch] == 1)
 574                         rtllib_send_probe_requests(ieee, 0);
 575
 576                 /* this prevent excessive time wait when we
 577                  * need to wait for a syncro scan to end..
 578                  */
 579                 msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME);
 580         }
 581 out:
 582         ieee->actscanning = false;
 583         ieee->sync_scan_hurryup = 0;
 584
 585         if (ieee->state >= RTLLIB_LINKED) {
 586                 if (IS_DOT11D_ENABLE(ieee))
 587                         DOT11D_ScanComplete(ieee);
 588         }
 589         up(&ieee->scan_sem);
 590
 591         ieee->be_scan_inprogress = false;
 592
 593         memset(&wrqu, 0, sizeof(wrqu));
 594         wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
 595 }
 596
 597 static void rtllib_softmac_scan_wq(void *data)
 598 {
 599         struct rtllib_device *ieee = container_of_dwork_rsl(data,
 600                                      struct rtllib_device, softmac_scan_wq);
 601         u8 last_channel = ieee->current_network.channel;
 602
 603         rtllib_update_active_chan_map(ieee);
 604
 605         if (!ieee->ieee_up)
 606                 return;
 607         if (rtllib_act_scanning(ieee, true) == true)
 608                 return;
 609
 610         down(&ieee->scan_sem);
 611
 612         if (ieee->eRFPowerState == eRfOff) {
 613                 printk(KERN_INFO "======>%s():rf state is eRfOff, return\n",
 614                        __func__);
 615                 goto out1;
 616         }
 617
 618         do {
 619                 ieee->current_network.channel =
 620                         (ieee->current_network.channel + 1) %
 621                         MAX_CHANNEL_NUMBER;
 622                 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) {
 623                         if (!ieee->active_channel_map[ieee->current_network.channel])
 624                                 ieee->current_network.channel = 6;
 625                         goto out; /* no good chans */
 626                 }
 627         } while (!ieee->active_channel_map[ieee->current_network.channel]);
 628
 629         if (ieee->scanning_continue == 0)
 630                 goto out;
 631
 632         ieee->set_chan(ieee->dev, ieee->current_network.channel);
 633
 634         if (ieee->active_channel_map[ieee->current_network.channel] == 1)
 635                 rtllib_send_probe_requests(ieee, 0);
 636
 637         queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq,
 638                                MSECS(RTLLIB_SOFTMAC_SCAN_TIME));
 639
 640         up(&ieee->scan_sem);
 641         return;
 642
 643 out:
 644         if (IS_DOT11D_ENABLE(ieee))
 645                 DOT11D_ScanComplete(ieee);
 646         ieee->current_network.channel = last_channel;
 647
 648 out1:
 649         ieee->actscanning = false;
 650         ieee->scan_watch_dog = 0;
 651         ieee->scanning_continue = 0;
 652         up(&ieee->scan_sem);
 653 }
 654
 655
 656
 657 static void rtllib_beacons_start(struct rtllib_device *ieee)
 658 {
 659         unsigned long flags;
 660         spin_lock_irqsave(&ieee->beacon_lock, flags);
 661
 662         ieee->beacon_txing = 1;
 663         rtllib_send_beacon(ieee);
 664
 665         spin_unlock_irqrestore(&ieee->beacon_lock, flags);
 666 }
 667
 668 static void rtllib_beacons_stop(struct rtllib_device *ieee)
 669 {
 670         unsigned long flags;
 671
 672         spin_lock_irqsave(&ieee->beacon_lock, flags);
 673
 674         ieee->beacon_txing = 0;
 675         del_timer_sync(&ieee->beacon_timer);
 676
 677         spin_unlock_irqrestore(&ieee->beacon_lock, flags);
 678
 679 }
 680
 681
 682 void rtllib_stop_send_beacons(struct rtllib_device *ieee)
 683 {
 684         if (ieee->stop_send_beacons)
 685                 ieee->stop_send_beacons(ieee->dev);
 686         if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
 687                 rtllib_beacons_stop(ieee);
 688 }
 689 EXPORT_SYMBOL(rtllib_stop_send_beacons);
 690
 691
 692 void rtllib_start_send_beacons(struct rtllib_device *ieee)
 693 {
 694         if (ieee->start_send_beacons)
 695                 ieee->start_send_beacons(ieee->dev);
 696         if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
 697                 rtllib_beacons_start(ieee);
 698 }
 699 EXPORT_SYMBOL(rtllib_start_send_beacons);
 700
 701
 702 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
 703 {
 704         down(&ieee->scan_sem);
 705         ieee->scan_watch_dog = 0;
 706         if (ieee->scanning_continue == 1) {
 707                 ieee->scanning_continue = 0;
 708                 ieee->actscanning = 0;
 709
 710                 cancel_delayed_work(&ieee->softmac_scan_wq);
 711         }
 712
 713         up(&ieee->scan_sem);
 714 }
 715
 716 void rtllib_stop_scan(struct rtllib_device *ieee)
 717 {
 718         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 719                 rtllib_softmac_stop_scan(ieee);
 720         } else {
 721                 if (ieee->rtllib_stop_hw_scan)
 722                         ieee->rtllib_stop_hw_scan(ieee->dev);
 723         }
 724 }
 725 EXPORT_SYMBOL(rtllib_stop_scan);
 726
 727 void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
 728 {
 729         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 730                         ieee->sync_scan_hurryup = 1;
 731         } else {
 732                 if (ieee->rtllib_stop_hw_scan)
 733                         ieee->rtllib_stop_hw_scan(ieee->dev);
 734         }
 735 }
 736 EXPORT_SYMBOL(rtllib_stop_scan_syncro);
 737
 738 bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
 739 {
 740         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 741                 if (sync_scan)
 742                         return ieee->be_scan_inprogress;
 743                 else
 744                         return ieee->actscanning || ieee->be_scan_inprogress;
 745         } else {
 746                 return test_bit(STATUS_SCANNING, &ieee->status);
 747         }
 748 }
 749 EXPORT_SYMBOL(rtllib_act_scanning);
 750
 751 /* called with ieee->lock held */
 752 static void rtllib_start_scan(struct rtllib_device *ieee)
 753 {
 754         RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
 755         if (ieee->rtllib_ips_leave_wq != NULL)
 756                 ieee->rtllib_ips_leave_wq(ieee->dev);
 757
 758         if (IS_DOT11D_ENABLE(ieee)) {
 759                 if (IS_COUNTRY_IE_VALID(ieee))
 760                         RESET_CIE_WATCHDOG(ieee);
 761         }
 762         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 763                 if (ieee->scanning_continue == 0) {
 764                         ieee->actscanning = true;
 765                         ieee->scanning_continue = 1;
 766                         queue_delayed_work_rsl(ieee->wq,
 767                                                &ieee->softmac_scan_wq, 0);
 768                 }
 769         } else {
 770                 if (ieee->rtllib_start_hw_scan)
 771                         ieee->rtllib_start_hw_scan(ieee->dev);
 772         }
 773 }
 774
 775 /* called with wx_sem held */
 776 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
 777 {
 778         if (IS_DOT11D_ENABLE(ieee)) {
 779                 if (IS_COUNTRY_IE_VALID(ieee))
 780                         RESET_CIE_WATCHDOG(ieee);
 781         }
 782         ieee->sync_scan_hurryup = 0;
 783         if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
 784                 rtllib_softmac_scan_syncro(ieee, is_mesh);
 785         } else {
 786                 if (ieee->rtllib_start_hw_scan)
 787                         ieee->rtllib_start_hw_scan(ieee->dev);
 788         }
 789 }
 790 EXPORT_SYMBOL(rtllib_start_scan_syncro);
 791
 792 inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon,
 793         struct rtllib_device *ieee, int challengelen, u8 *daddr)
 794 {
 795         struct sk_buff *skb;
 796         struct rtllib_authentication *auth;
 797         int  len = 0;
 798         len = sizeof(struct rtllib_authentication) + challengelen +
 799                      ieee->tx_headroom + 4;
 800         skb = dev_alloc_skb(len);
 801
 802         if (!skb)
 803                 return NULL;
 804
 805         skb_reserve(skb, ieee->tx_headroom);
 806
 807         auth = (struct rtllib_authentication *)
 808                 skb_put(skb, sizeof(struct rtllib_authentication));
 809
 810         auth->header.frame_ctl = RTLLIB_STYPE_AUTH;
 811         if (challengelen)
 812                 auth->header.frame_ctl |= RTLLIB_FCTL_WEP;
 813
 814         auth->header.duration_id = 0x013a;
 815         memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN);
 816         memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
 817         memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN);
 818         if (ieee->auth_mode == 0)
 819                 auth->algorithm = WLAN_AUTH_OPEN;
 820         else if (ieee->auth_mode == 1)
 821                 auth->algorithm = WLAN_AUTH_SHARED_KEY;
 822         else if (ieee->auth_mode == 2)
 823                 auth->algorithm = WLAN_AUTH_OPEN;
 824         auth->transaction = cpu_to_le16(ieee->associate_seq);
 825         ieee->associate_seq++;
 826
 827         auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
 828
 829         return skb;
 830 }
 831
 832 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, u8 *dest)
 833 {
 834         u8 *tag;
 835         int beacon_size;
 836         struct rtllib_probe_response *beacon_buf;
 837         struct sk_buff *skb = NULL;
 838         int encrypt;
 839         int atim_len, erp_len;
 840         struct lib80211_crypt_data *crypt;
 841
 842         char *ssid = ieee->current_network.ssid;
 843         int ssid_len = ieee->current_network.ssid_len;
 844         int rate_len = ieee->current_network.rates_len+2;
 845         int rate_ex_len = ieee->current_network.rates_ex_len;
 846         int wpa_ie_len = ieee->wpa_ie_len;
 847         u8 erpinfo_content = 0;
 848
 849         u8 *tmp_ht_cap_buf = NULL;
 850         u8 tmp_ht_cap_len = 0;
 851         u8 *tmp_ht_info_buf = NULL;
 852         u8 tmp_ht_info_len = 0;
 853         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 854         u8 *tmp_generic_ie_buf = NULL;
 855         u8 tmp_generic_ie_len = 0;
 856
 857         if (rate_ex_len > 0)
 858                 rate_ex_len += 2;
 859
 860         if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
 861                 atim_len = 4;
 862         else
 863                 atim_len = 0;
 864
 865         if ((ieee->current_network.mode == IEEE_G) ||
 866            (ieee->current_network.mode == IEEE_N_24G &&
 867            ieee->pHTInfo->bCurSuppCCK)) {
 868                 erp_len = 3;
 869                 erpinfo_content = 0;
 870                 if (ieee->current_network.buseprotection)
 871                         erpinfo_content |= ERP_UseProtection;
 872         } else
 873                 erp_len = 0;
 874
 875         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 876         encrypt = ieee->host_encrypt && crypt && crypt->ops &&
 877                 ((0 == strcmp(crypt->ops->name, "R-WEP") || wpa_ie_len));
 878         if (ieee->pHTInfo->bCurrentHTSupport) {
 879                 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
 880                 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
 881                 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
 882                 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
 883                 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
 884                                              &tmp_ht_cap_len, encrypt, false);
 885                 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
 886                                        encrypt);
 887
 888                 if (pHTInfo->bRegRT2RTAggregation) {
 889                         tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
 890                         tmp_generic_ie_len =
 891                                  sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
 892                         HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
 893                                                    &tmp_generic_ie_len);
 894                 }
 895         }
 896
 897         beacon_size = sizeof(struct rtllib_probe_response)+2+
 898                 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
 899                 + wpa_ie_len + ieee->tx_headroom;
 900         skb = dev_alloc_skb(beacon_size);
 901         if (!skb)
 902                 return NULL;
 903
 904         skb_reserve(skb, ieee->tx_headroom);
 905
 906         beacon_buf = (struct rtllib_probe_response *) skb_put(skb,
 907                      (beacon_size - ieee->tx_headroom));
 908         memcpy(beacon_buf->header.addr1, dest, ETH_ALEN);
 909         memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
 910         memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN);
 911
 912         beacon_buf->header.duration_id = 0;
 913         beacon_buf->beacon_interval =
 914                 cpu_to_le16(ieee->current_network.beacon_interval);
 915         beacon_buf->capability =
 916                 cpu_to_le16(ieee->current_network.capability &
 917                 WLAN_CAPABILITY_IBSS);
 918         beacon_buf->capability |=
 919                 cpu_to_le16(ieee->current_network.capability &
 920                 WLAN_CAPABILITY_SHORT_PREAMBLE);
 921
 922         if (ieee->short_slot && (ieee->current_network.capability &
 923             WLAN_CAPABILITY_SHORT_SLOT_TIME))
 924                 cpu_to_le16((beacon_buf->capability |=
 925                                  WLAN_CAPABILITY_SHORT_SLOT_TIME));
 926
 927         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
 928         if (encrypt)
 929                 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
 930
 931
 932         beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
 933         beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
 934         beacon_buf->info_element[0].len = ssid_len;
 935
 936         tag = (u8 *) beacon_buf->info_element[0].data;
 937
 938         memcpy(tag, ssid, ssid_len);
 939
 940         tag += ssid_len;
 941
 942         *(tag++) = MFIE_TYPE_RATES;
 943         *(tag++) = rate_len-2;
 944         memcpy(tag, ieee->current_network.rates, rate_len-2);
 945         tag += rate_len-2;
 946
 947         *(tag++) = MFIE_TYPE_DS_SET;
 948         *(tag++) = 1;
 949         *(tag++) = ieee->current_network.channel;
 950
 951         if (atim_len) {
 952                 u16 val16;
 953                 *(tag++) = MFIE_TYPE_IBSS_SET;
 954                 *(tag++) = 2;
 955                  val16 = cpu_to_le16(ieee->current_network.atim_window);
 956                 memcpy((u8 *)tag, (u8 *)&val16, 2);
 957                 tag += 2;
 958         }
 959
 960         if (erp_len) {
 961                 *(tag++) = MFIE_TYPE_ERP;
 962                 *(tag++) = 1;
 963                 *(tag++) = erpinfo_content;
 964         }
 965         if (rate_ex_len) {
 966                 *(tag++) = MFIE_TYPE_RATES_EX;
 967                 *(tag++) = rate_ex_len-2;
 968                 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
 969                 tag += rate_ex_len-2;
 970         }
 971
 972         if (wpa_ie_len) {
 973                 if (ieee->iw_mode == IW_MODE_ADHOC)
 974                         memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
 975                 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
 976                 tag += ieee->wpa_ie_len;
 977         }
 978         return skb;
 979 }
 980
 981 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
 982 {
 983         struct sk_buff *skb;
 984         u8 *tag;
 985
 986         struct lib80211_crypt_data *crypt;
 987         struct rtllib_assoc_response_frame *assoc;
 988         short encrypt;
 989
 990         unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
 991         int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
 992                   ieee->tx_headroom;
 993
 994         skb = dev_alloc_skb(len);
 995
 996         if (!skb)
 997                 return NULL;
 998
 999         skb_reserve(skb, ieee->tx_headroom);
1000
1001         assoc = (struct rtllib_assoc_response_frame *)
1002                 skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
1003
1004         assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
1005         memcpy(assoc->header.addr1, dest, ETH_ALEN);
1006         memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1007         memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1008         assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
1009                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
1010
1011
1012         if (ieee->short_slot)
1013                 assoc->capability |=
1014                                  cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1015
1016         if (ieee->host_encrypt)
1017                 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1018         else
1019                 crypt = NULL;
1020
1021         encrypt = (crypt && crypt->ops);
1022
1023         if (encrypt)
1024                 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1025
1026         assoc->status = 0;
1027         assoc->aid = cpu_to_le16(ieee->assoc_id);
1028         if (ieee->assoc_id == 0x2007)
1029                 ieee->assoc_id = 0;
1030         else
1031                 ieee->assoc_id++;
1032
1033         tag = (u8 *) skb_put(skb, rate_len);
1034         rtllib_MFIE_Brate(ieee, &tag);
1035         rtllib_MFIE_Grate(ieee, &tag);
1036
1037         return skb;
1038 }
1039
1040 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1041                                  u8 *dest)
1042 {
1043         struct sk_buff *skb = NULL;
1044         struct rtllib_authentication *auth;
1045         int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1046         skb = dev_alloc_skb(len);
1047         if (!skb)
1048                 return NULL;
1049
1050         skb->len = sizeof(struct rtllib_authentication);
1051
1052         skb_reserve(skb, ieee->tx_headroom);
1053
1054         auth = (struct rtllib_authentication *)
1055                 skb_put(skb, sizeof(struct rtllib_authentication));
1056
1057         auth->status = cpu_to_le16(status);
1058         auth->transaction = cpu_to_le16(2);
1059         auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1060
1061         memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1062         memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1063         memcpy(auth->header.addr1, dest, ETH_ALEN);
1064         auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1065         return skb;
1066
1067
1068 }
1069
1070 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1071 {
1072         struct sk_buff *skb;
1073         struct rtllib_hdr_3addr *hdr;
1074
1075         skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1076         if (!skb)
1077                 return NULL;
1078
1079         skb_reserve(skb, ieee->tx_headroom);
1080
1081         hdr = (struct rtllib_hdr_3addr *)skb_put(skb,
1082               sizeof(struct rtllib_hdr_3addr));
1083
1084         memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN);
1085         memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN);
1086         memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN);
1087
1088         hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1089                 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1090                 (pwr ? RTLLIB_FCTL_PM : 0));
1091
1092         return skb;
1093
1094
1095 }
1096
1097 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1098 {
1099         struct sk_buff *skb;
1100         struct rtllib_pspoll_hdr *hdr;
1101
1102         skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1103         if (!skb)
1104                 return NULL;
1105
1106         skb_reserve(skb, ieee->tx_headroom);
1107
1108         hdr = (struct rtllib_pspoll_hdr *)skb_put(skb,
1109               sizeof(struct rtllib_pspoll_hdr));
1110
1111         memcpy(hdr->bssid, ieee->current_network.bssid, ETH_ALEN);
1112         memcpy(hdr->ta, ieee->dev->dev_addr, ETH_ALEN);
1113
1114         hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1115         hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1116                          RTLLIB_FCTL_PM);
1117
1118         return skb;
1119
1120 }
1121
1122 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1123 {
1124         struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1125
1126         if (buf)
1127                 softmac_mgmt_xmit(buf, ieee);
1128 }
1129
1130
1131 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1132 {
1133         struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1134
1135         if (buf)
1136                 softmac_mgmt_xmit(buf, ieee);
1137 }
1138
1139
1140 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1141 {
1142
1143         struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1144         if (buf)
1145                 softmac_mgmt_xmit(buf, ieee);
1146 }
1147
1148
1149 inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1150 {
1151         int i = 0;
1152
1153         do {
1154                 if ((ieee->PMKIDList[i].bUsed) &&
1155                    (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1156                         break;
1157                 else
1158                         i++;
1159         } while (i < NUM_PMKID_CACHE);
1160
1161         if (i == NUM_PMKID_CACHE)
1162                 i = -1;
1163         return i;
1164 }
1165
1166 inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon,
1167                                               struct rtllib_device *ieee)
1168 {
1169         struct sk_buff *skb;
1170         struct rtllib_assoc_request_frame *hdr;
1171         u8 *tag, *ies;
1172         int i;
1173         u8 *ht_cap_buf = NULL;
1174         u8 ht_cap_len = 0;
1175         u8 *realtek_ie_buf = NULL;
1176         u8 realtek_ie_len = 0;
1177         int wpa_ie_len = ieee->wpa_ie_len;
1178         int wps_ie_len = ieee->wps_ie_len;
1179         unsigned int ckip_ie_len = 0;
1180         unsigned int ccxrm_ie_len = 0;
1181         unsigned int cxvernum_ie_len = 0;
1182         struct lib80211_crypt_data *crypt;
1183         int encrypt;
1184         int     PMKCacheIdx;
1185
1186         unsigned int rate_len = (beacon->rates_len ?
1187                                 (beacon->rates_len + 2) : 0) +
1188                                 (beacon->rates_ex_len ? (beacon->rates_ex_len) +
1189                                 2 : 0);
1190
1191         unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1192         unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1193
1194         int len = 0;
1195         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1196         if (crypt != NULL)
1197                 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1198                           ((0 == strcmp(crypt->ops->name, "R-WEP") ||
1199                           wpa_ie_len));
1200         else
1201                 encrypt = 0;
1202
1203         if ((ieee->rtllib_ap_sec_type &&
1204             (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1205             (ieee->bForcedBgMode == true)) {
1206                 ieee->pHTInfo->bEnableHT = 0;
1207                 ieee->mode = WIRELESS_MODE_G;
1208         }
1209
1210         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1211                 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1212                 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1213                 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1214                                              encrypt, true);
1215                 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1216                         realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1217                         realtek_ie_len =
1218                                  sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1219                         HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1220                                                    &realtek_ie_len);
1221                 }
1222         }
1223
1224         if (beacon->bCkipSupported)
1225                 ckip_ie_len = 30+2;
1226         if (beacon->bCcxRmEnable)
1227                 ccxrm_ie_len = 6+2;
1228         if (beacon->BssCcxVerNumber >= 2)
1229                 cxvernum_ie_len = 5+2;
1230
1231         PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1232         if (PMKCacheIdx >= 0) {
1233                 wpa_ie_len += 18;
1234                 printk(KERN_INFO "[PMK cache]: WPA2 IE length: %x\n",
1235                        wpa_ie_len);
1236         }
1237         len = sizeof(struct rtllib_assoc_request_frame) + 2
1238                 + beacon->ssid_len
1239                 + rate_len
1240                 + wpa_ie_len
1241                 + wps_ie_len
1242                 + wmm_info_len
1243                 + turbo_info_len
1244                 + ht_cap_len
1245                 + realtek_ie_len
1246                 + ckip_ie_len
1247                 + ccxrm_ie_len
1248                 + cxvernum_ie_len
1249                 + ieee->tx_headroom;
1250
1251         skb = dev_alloc_skb(len);
1252
1253         if (!skb)
1254                 return NULL;
1255
1256         skb_reserve(skb, ieee->tx_headroom);
1257
1258         hdr = (struct rtllib_assoc_request_frame *)
1259                 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1260
1261
1262         hdr->header.frame_ctl = RTLLIB_STYPE_ASSOC_REQ;
1263         hdr->header.duration_id = 37;
1264         memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN);
1265         memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1266         memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN);
1267
1268         memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);
1269
1270         hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1271         if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1272                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1273
1274         if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1275                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1276
1277         if (ieee->short_slot &&
1278            (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1279                 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1280
1281
1282         hdr->listen_interval = beacon->listen_interval;
1283
1284         hdr->info_element[0].id = MFIE_TYPE_SSID;
1285
1286         hdr->info_element[0].len = beacon->ssid_len;
1287         tag = skb_put(skb, beacon->ssid_len);
1288         memcpy(tag, beacon->ssid, beacon->ssid_len);
1289
1290         tag = skb_put(skb, rate_len);
1291
1292         if (beacon->rates_len) {
1293                 *tag++ = MFIE_TYPE_RATES;
1294                 *tag++ = beacon->rates_len;
1295                 for (i = 0; i < beacon->rates_len; i++)
1296                         *tag++ = beacon->rates[i];
1297         }
1298
1299         if (beacon->rates_ex_len) {
1300                 *tag++ = MFIE_TYPE_RATES_EX;
1301                 *tag++ = beacon->rates_ex_len;
1302                 for (i = 0; i < beacon->rates_ex_len; i++)
1303                         *tag++ = beacon->rates_ex[i];
1304         }
1305
1306         if (beacon->bCkipSupported) {
1307                 static u8       AironetIeOui[] = {0x00, 0x01, 0x66};
1308                 u8      CcxAironetBuf[30];
1309                 struct octet_string osCcxAironetIE;
1310
1311                 memset(CcxAironetBuf, 0, 30);
1312                 osCcxAironetIE.Octet = CcxAironetBuf;
1313                 osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1314                 memcpy(osCcxAironetIE.Octet, AironetIeOui,
1315                        sizeof(AironetIeOui));
1316
1317                 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1318                                          (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1319                 tag = skb_put(skb, ckip_ie_len);
1320                 *tag++ = MFIE_TYPE_AIRONET;
1321                 *tag++ = osCcxAironetIE.Length;
1322                 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1323                 tag += osCcxAironetIE.Length;
1324         }
1325
1326         if (beacon->bCcxRmEnable) {
1327                 static u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 0x00};
1328                 struct octet_string osCcxRmCap;
1329
1330                 osCcxRmCap.Octet = CcxRmCapBuf;
1331                 osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1332                 tag = skb_put(skb, ccxrm_ie_len);
1333                 *tag++ = MFIE_TYPE_GENERIC;
1334                 *tag++ = osCcxRmCap.Length;
1335                 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1336                 tag += osCcxRmCap.Length;
1337         }
1338
1339         if (beacon->BssCcxVerNumber >= 2) {
1340                 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1341                 struct octet_string osCcxVerNum;
1342                 CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1343                 osCcxVerNum.Octet = CcxVerNumBuf;
1344                 osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1345                 tag = skb_put(skb, cxvernum_ie_len);
1346                 *tag++ = MFIE_TYPE_GENERIC;
1347                 *tag++ = osCcxVerNum.Length;
1348                 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1349                 tag += osCcxVerNum.Length;
1350         }
1351         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1352                 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1353                         tag = skb_put(skb, ht_cap_len);
1354                         *tag++ = MFIE_TYPE_HT_CAP;
1355                         *tag++ = ht_cap_len - 2;
1356                         memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1357                         tag += ht_cap_len - 2;
1358                 }
1359         }
1360
1361         if (wpa_ie_len) {
1362                 tag = skb_put(skb, ieee->wpa_ie_len);
1363                 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
1364
1365                 if (PMKCacheIdx >= 0) {
1366                         tag = skb_put(skb, 18);
1367                         *tag = 1;
1368                         *(tag + 1) = 0;
1369                         memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1370                                16);
1371                 }
1372         }
1373         if (wmm_info_len) {
1374                 tag = skb_put(skb, wmm_info_len);
1375                 rtllib_WMM_Info(ieee, &tag);
1376         }
1377
1378         if (wps_ie_len && ieee->wps_ie) {
1379                 tag = skb_put(skb, wps_ie_len);
1380                 memcpy(tag, ieee->wps_ie, wps_ie_len);
1381         }
1382
1383         tag = skb_put(skb, turbo_info_len);
1384         if (turbo_info_len)
1385                 rtllib_TURBO_Info(ieee, &tag);
1386
1387         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1388                 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1389                         tag = skb_put(skb, ht_cap_len);
1390                         *tag++ = MFIE_TYPE_GENERIC;
1391                         *tag++ = ht_cap_len - 2;
1392                         memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1393                         tag += ht_cap_len - 2;
1394                 }
1395
1396                 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1397                         tag = skb_put(skb, realtek_ie_len);
1398                         *tag++ = MFIE_TYPE_GENERIC;
1399                         *tag++ = realtek_ie_len - 2;
1400                         memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1401                 }
1402         }
1403
1404         kfree(ieee->assocreq_ies);
1405         ieee->assocreq_ies = NULL;
1406         ies = &(hdr->info_element[0].id);
1407         ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1408         ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
1409         if (ieee->assocreq_ies)
1410                 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
1411         else {
1412                 printk(KERN_INFO "%s()Warning: can't alloc memory for assocreq"
1413                        "_ies\n", __func__);
1414                 ieee->assocreq_ies_len = 0;
1415         }
1416         return skb;
1417 }
1418
1419 void rtllib_associate_abort(struct rtllib_device *ieee)
1420 {
1421
1422         unsigned long flags;
1423         spin_lock_irqsave(&ieee->lock, flags);
1424
1425         ieee->associate_seq++;
1426
1427         /* don't scan, and avoid to have the RX path possibily
1428          * try again to associate. Even do not react to AUTH or
1429          * ASSOC response. Just wait for the retry wq to be scheduled.
1430          * Here we will check if there are good nets to associate
1431          * with, so we retry or just get back to NO_LINK and scanning
1432          */
1433         if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1434                 RTLLIB_DEBUG_MGMT("Authentication failed\n");
1435                 ieee->softmac_stats.no_auth_rs++;
1436         } else {
1437                 RTLLIB_DEBUG_MGMT("Association failed\n");
1438                 ieee->softmac_stats.no_ass_rs++;
1439         }
1440
1441         ieee->state = RTLLIB_ASSOCIATING_RETRY;
1442
1443         queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq,
1444                            RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1445
1446         spin_unlock_irqrestore(&ieee->lock, flags);
1447 }
1448
1449 static void rtllib_associate_abort_cb(unsigned long dev)
1450 {
1451         rtllib_associate_abort((struct rtllib_device *) dev);
1452 }
1453
1454 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 * daddr)
1455 {
1456         struct rtllib_network *beacon = &ieee->current_network;
1457         struct sk_buff *skb;
1458
1459         RTLLIB_DEBUG_MGMT("Stopping scan\n");
1460
1461         ieee->softmac_stats.tx_auth_rq++;
1462
1463         skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1464
1465         if (!skb)
1466                 rtllib_associate_abort(ieee);
1467         else {
1468                 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING ;
1469                 RTLLIB_DEBUG_MGMT("Sending authentication request\n");
1470                 softmac_mgmt_xmit(skb, ieee);
1471                 if (!timer_pending(&ieee->associate_timer)) {
1472                         ieee->associate_timer.expires = jiffies + (HZ / 2);
1473                         add_timer(&ieee->associate_timer);
1474                 }
1475         }
1476 }
1477
1478 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, int chlen)
1479 {
1480         u8 *c;
1481         struct sk_buff *skb;
1482         struct rtllib_network *beacon = &ieee->current_network;
1483
1484         ieee->associate_seq++;
1485         ieee->softmac_stats.tx_auth_rq++;
1486
1487         skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1488
1489         if (!skb)
1490                 rtllib_associate_abort(ieee);
1491         else {
1492                 c = skb_put(skb, chlen+2);
1493                 *(c++) = MFIE_TYPE_CHALLENGE;
1494                 *(c++) = chlen;
1495                 memcpy(c, challenge, chlen);
1496
1497                 RTLLIB_DEBUG_MGMT("Sending authentication challenge "
1498                                   "response\n");
1499
1500                 rtllib_encrypt_fragment(ieee, skb,
1501                                         sizeof(struct rtllib_hdr_3addr));
1502
1503                 softmac_mgmt_xmit(skb, ieee);
1504                 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1505         }
1506         kfree(challenge);
1507 }
1508
1509 static void rtllib_associate_step2(struct rtllib_device *ieee)
1510 {
1511         struct sk_buff *skb;
1512         struct rtllib_network *beacon = &ieee->current_network;
1513
1514         del_timer_sync(&ieee->associate_timer);
1515
1516         RTLLIB_DEBUG_MGMT("Sending association request\n");
1517
1518         ieee->softmac_stats.tx_ass_rq++;
1519         skb = rtllib_association_req(beacon, ieee);
1520         if (!skb)
1521                 rtllib_associate_abort(ieee);
1522         else {
1523                 softmac_mgmt_xmit(skb, ieee);
1524                 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1525         }
1526 }
1527
1528 #define CANCELLED  2
1529 static void rtllib_associate_complete_wq(void *data)
1530 {
1531         struct rtllib_device *ieee = (struct rtllib_device *)
1532                                      container_of_work_rsl(data,
1533                                      struct rtllib_device,
1534                                      associate_complete_wq);
1535         struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1536                                         (&(ieee->PowerSaveControl));
1537         printk(KERN_INFO "Associated successfully\n");
1538         if (ieee->is_silent_reset == 0) {
1539                 printk(KERN_INFO "normal associate\n");
1540                 notify_wx_assoc_event(ieee);
1541         }
1542
1543         netif_carrier_on(ieee->dev);
1544         ieee->is_roaming = false;
1545         if (rtllib_is_54g(&ieee->current_network) &&
1546            (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1547                 ieee->rate = 108;
1548                 printk(KERN_INFO"Using G rates:%d\n", ieee->rate);
1549         } else {
1550                 ieee->rate = 22;
1551                 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1552                 printk(KERN_INFO"Using B rates:%d\n", ieee->rate);
1553         }
1554         if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1555                 printk(KERN_INFO "Successfully associated, ht enabled\n");
1556                 HTOnAssocRsp(ieee);
1557         } else {
1558                 printk(KERN_INFO "Successfully associated, ht not "
1559                        "enabled(%d, %d)\n",
1560                        ieee->pHTInfo->bCurrentHTSupport,
1561                        ieee->pHTInfo->bEnableHT);
1562                 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1563         }
1564         ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1565                                        ieee->current_network.beacon_interval /
1566                                        500);
1567         if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1568             ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1569                 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1570                 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1571         }
1572         pPSC->LpsIdleCount = 0;
1573         ieee->link_change(ieee->dev);
1574
1575         if (ieee->is_silent_reset == 1) {
1576                 printk(KERN_INFO "silent reset associate\n");
1577                 ieee->is_silent_reset = 0;
1578         }
1579
1580         if (ieee->data_hard_resume)
1581                 ieee->data_hard_resume(ieee->dev);
1582
1583 }
1584
1585 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1586 {
1587 }
1588
1589 static void rtllib_associate_complete(struct rtllib_device *ieee)
1590 {
1591         del_timer_sync(&ieee->associate_timer);
1592
1593         ieee->state = RTLLIB_LINKED;
1594         rtllib_sta_send_associnfo(ieee);
1595
1596         queue_work_rsl(ieee->wq, &ieee->associate_complete_wq);
1597 }
1598
1599 static void rtllib_associate_procedure_wq(void *data)
1600 {
1601         struct rtllib_device *ieee = container_of_dwork_rsl(data,
1602                                      struct rtllib_device,
1603                                      associate_procedure_wq);
1604         rtllib_stop_scan_syncro(ieee);
1605         if (ieee->rtllib_ips_leave != NULL)
1606                 ieee->rtllib_ips_leave(ieee->dev);
1607         down(&ieee->wx_sem);
1608
1609         if (ieee->data_hard_stop)
1610                 ieee->data_hard_stop(ieee->dev);
1611
1612         rtllib_stop_scan(ieee);
1613         RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1614                  ieee->current_network.channel);
1615         HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1616         if (ieee->eRFPowerState == eRfOff) {
1617                 RT_TRACE(COMP_DBG, "=============>%s():Rf state is eRfOff,"
1618                          " schedule ipsleave wq again,return\n", __func__);
1619                 if (ieee->rtllib_ips_leave_wq != NULL)
1620                         ieee->rtllib_ips_leave_wq(ieee->dev);
1621                 up(&ieee->wx_sem);
1622                 return;
1623         }
1624         ieee->associate_seq = 1;
1625
1626         rtllib_associate_step1(ieee, ieee->current_network.bssid);
1627
1628         up(&ieee->wx_sem);
1629 }
1630
1631 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1632                                    struct rtllib_network *net)
1633 {
1634         u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1635         int tmp_ssid_len = 0;
1636
1637         short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1638
1639         /* we are interested in new new only if we are not associated
1640          * and we are not associating / authenticating
1641          */
1642         if (ieee->state != RTLLIB_NOLINK)
1643                 return;
1644
1645         if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1646             WLAN_CAPABILITY_ESS))
1647                 return;
1648
1649         if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1650              WLAN_CAPABILITY_IBSS))
1651                 return;
1652
1653         if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1654             (net->channel > ieee->ibss_maxjoin_chal))
1655                 return;
1656         if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1657                 /* if the user specified the AP MAC, we need also the essid
1658                  * This could be obtained by beacons or, if the network does not
1659                  * broadcast it, it can be put manually.
1660                  */
1661                 apset = ieee->wap_set;
1662                 ssidset = ieee->ssid_set;
1663                 ssidbroad =  !(net->ssid_len == 0 || net->ssid[0] == '\0');
1664                 apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1665                                   ETH_ALEN) == 0);
1666                 if (!ssidbroad) {
1667                         ssidmatch = (ieee->current_network.ssid_len ==
1668                                     net->hidden_ssid_len) &&
1669                                     (!strncmp(ieee->current_network.ssid,
1670                                     net->hidden_ssid, net->hidden_ssid_len));
1671                         if (net->hidden_ssid_len > 0) {
1672                                 strncpy(net->ssid, net->hidden_ssid,
1673                                         net->hidden_ssid_len);
1674                                 net->ssid_len = net->hidden_ssid_len;
1675                                 ssidbroad = 1;
1676                         }
1677                 } else
1678                         ssidmatch =
1679                            (ieee->current_network.ssid_len == net->ssid_len) &&
1680                            (!strncmp(ieee->current_network.ssid, net->ssid,
1681                            net->ssid_len));
1682
1683                 /* if the user set the AP check if match.
1684                  * if the network does not broadcast essid we check the
1685                  *       user supplied ANY essid
1686                  * if the network does broadcast and the user does not set
1687                  *       essid it is OK
1688                  * if the network does broadcast and the user did set essid
1689                  * check if essid match
1690                  * if the ap is not set, check that the user set the bssid
1691                  * and the network does broadcast and that those two bssid match
1692                  */
1693                 if ((apset && apmatch &&
1694                    ((ssidset && ssidbroad && ssidmatch) ||
1695                    (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1696                    (!apset && ssidset && ssidbroad && ssidmatch) ||
1697                    (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1698                         /* if the essid is hidden replace it with the
1699                         * essid provided by the user.
1700                         */
1701                         if (!ssidbroad) {
1702                                 strncpy(tmp_ssid, ieee->current_network.ssid,
1703                                         IW_ESSID_MAX_SIZE);
1704                                 tmp_ssid_len = ieee->current_network.ssid_len;
1705                         }
1706                         memcpy(&ieee->current_network, net,
1707                                sizeof(struct rtllib_network));
1708                         if (!ssidbroad) {
1709                                 strncpy(ieee->current_network.ssid, tmp_ssid,
1710                                         IW_ESSID_MAX_SIZE);
1711                                 ieee->current_network.ssid_len = tmp_ssid_len;
1712                         }
1713                         printk(KERN_INFO"Linking with %s,channel:%d, qos:%d, "
1714                                "myHT:%d, networkHT:%d, mode:%x cur_net.flags"
1715                                ":0x%x\n", ieee->current_network.ssid,
1716                                ieee->current_network.channel,
1717                                ieee->current_network.qos_data.supported,
1718                                ieee->pHTInfo->bEnableHT,
1719                                ieee->current_network.bssht.bdSupportHT,
1720                                ieee->current_network.mode,
1721                                ieee->current_network.flags);
1722
1723                         if ((rtllib_act_scanning(ieee, false)) &&
1724                            !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1725                                 rtllib_stop_scan_syncro(ieee);
1726
1727                         ieee->hwscan_ch_bk = ieee->current_network.channel;
1728                         HTResetIOTSetting(ieee->pHTInfo);
1729                         ieee->wmm_acm = 0;
1730                         if (ieee->iw_mode == IW_MODE_INFRA) {
1731                                 /* Join the network for the first time */
1732                                 ieee->AsocRetryCount = 0;
1733                                 if ((ieee->current_network.qos_data.supported == 1) &&
1734                                    ieee->current_network.bssht.bdSupportHT)
1735                                         HTResetSelfAndSavePeerSetting(ieee,
1736                                                  &(ieee->current_network));
1737                                 else
1738                                         ieee->pHTInfo->bCurrentHTSupport =
1739                                                                  false;
1740
1741                                 ieee->state = RTLLIB_ASSOCIATING;
1742                                 if (ieee->LedControlHandler != NULL)
1743                                         ieee->LedControlHandler(ieee->dev,
1744                                                          LED_CTL_START_TO_LINK);
1745                                 queue_delayed_work_rsl(ieee->wq,
1746                                            &ieee->associate_procedure_wq, 0);
1747                         } else {
1748                                 if (rtllib_is_54g(&ieee->current_network) &&
1749                                         (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1750                                         ieee->rate = 108;
1751                                         ieee->SetWirelessMode(ieee->dev, IEEE_G);
1752                                         printk(KERN_INFO"Using G rates\n");
1753                                 } else {
1754                                         ieee->rate = 22;
1755                                         ieee->SetWirelessMode(ieee->dev, IEEE_B);
1756                                         printk(KERN_INFO"Using B rates\n");
1757                                 }
1758                                 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1759                                 ieee->state = RTLLIB_LINKED;
1760                         }
1761                 }
1762         }
1763 }
1764
1765 void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1766 {
1767         unsigned long flags;
1768         struct rtllib_network *target;
1769
1770         spin_lock_irqsave(&ieee->lock, flags);
1771
1772         list_for_each_entry(target, &ieee->network_list, list) {
1773
1774                 /* if the state become different that NOLINK means
1775                  * we had found what we are searching for
1776                  */
1777
1778                 if (ieee->state != RTLLIB_NOLINK)
1779                         break;
1780
1781                 if (ieee->scan_age == 0 || time_after(target->last_scanned +
1782                     ieee->scan_age, jiffies))
1783                         rtllib_softmac_new_net(ieee, target);
1784         }
1785         spin_unlock_irqrestore(&ieee->lock, flags);
1786 }
1787
1788 static inline u16 auth_parse(struct sk_buff *skb, u8** challenge, int *chlen)
1789 {
1790         struct rtllib_authentication *a;
1791         u8 *t;
1792         if (skb->len <  (sizeof(struct rtllib_authentication) -
1793             sizeof(struct rtllib_info_element))) {
1794                 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1795                 return 0xcafe;
1796         }
1797         *challenge = NULL;
1798         a = (struct rtllib_authentication *) skb->data;
1799         if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1800                 t = skb->data + sizeof(struct rtllib_authentication);
1801
1802                 if (*(t++) == MFIE_TYPE_CHALLENGE) {
1803                         *chlen = *(t++);
1804                         *challenge = kmemdup(t, *chlen, GFP_ATOMIC);
1805                         if (!*challenge)
1806                                 return -ENOMEM;
1807                 }
1808         }
1809         return cpu_to_le16(a->status);
1810 }
1811
1812 static int auth_rq_parse(struct sk_buff *skb, u8 *dest)
1813 {
1814         struct rtllib_authentication *a;
1815
1816         if (skb->len <  (sizeof(struct rtllib_authentication) -
1817             sizeof(struct rtllib_info_element))) {
1818                 RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n",
1819                                   skb->len);
1820                 return -1;
1821         }
1822         a = (struct rtllib_authentication *) skb->data;
1823
1824         memcpy(dest, a->header.addr2, ETH_ALEN);
1825
1826         if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1827                 return  WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1828
1829         return WLAN_STATUS_SUCCESS;
1830 }
1831
1832 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1833                             u8 *src)
1834 {
1835         u8 *tag;
1836         u8 *skbend;
1837         u8 *ssid = NULL;
1838         u8 ssidlen = 0;
1839         struct rtllib_hdr_3addr   *header =
1840                 (struct rtllib_hdr_3addr   *) skb->data;
1841         bool bssid_match;
1842
1843         if (skb->len < sizeof(struct rtllib_hdr_3addr))
1844                 return -1; /* corrupted */
1845
1846         bssid_match =
1847           (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) &&
1848           (!is_broadcast_ether_addr(header->addr3));
1849         if (bssid_match)
1850                 return -1;
1851
1852         memcpy(src, header->addr2, ETH_ALEN);
1853
1854         skbend = (u8 *)skb->data + skb->len;
1855
1856         tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1857
1858         while (tag + 1 < skbend) {
1859                 if (*tag == 0) {
1860                         ssid = tag + 2;
1861                         ssidlen = *(tag + 1);
1862                         break;
1863                 }
1864                 tag++; /* point to the len field */
1865                 tag = tag + *(tag); /* point to the last data byte of the tag */
1866                 tag++; /* point to the next tag */
1867         }
1868
1869         if (ssidlen == 0)
1870                 return 1;
1871
1872         if (!ssid)
1873                 return 1; /* ssid not found in tagged param */
1874
1875         return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1876 }
1877
1878 static int assoc_rq_parse(struct sk_buff *skb, u8 *dest)
1879 {
1880         struct rtllib_assoc_request_frame *a;
1881
1882         if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1883                 sizeof(struct rtllib_info_element))) {
1884
1885                 RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len);
1886                 return -1;
1887         }
1888
1889         a = (struct rtllib_assoc_request_frame *) skb->data;
1890
1891         memcpy(dest, a->header.addr2, ETH_ALEN);
1892
1893         return 0;
1894 }
1895
1896 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1897                               int *aid)
1898 {
1899         struct rtllib_assoc_response_frame *response_head;
1900         u16 status_code;
1901
1902         if (skb->len <  sizeof(struct rtllib_assoc_response_frame)) {
1903                 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1904                 return 0xcafe;
1905         }
1906
1907         response_head = (struct rtllib_assoc_response_frame *) skb->data;
1908         *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1909
1910         status_code = le16_to_cpu(response_head->status);
1911         if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1912            status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1913            ((ieee->mode == IEEE_G) &&
1914            (ieee->current_network.mode == IEEE_N_24G) &&
1915            (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1916                 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1917         } else {
1918                 ieee->AsocRetryCount = 0;
1919         }
1920
1921         return le16_to_cpu(response_head->status);
1922 }
1923
1924 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1925 {
1926         u8 dest[ETH_ALEN];
1927         ieee->softmac_stats.rx_probe_rq++;
1928         if (probe_rq_parse(ieee, skb, dest) > 0) {
1929                 ieee->softmac_stats.tx_probe_rs++;
1930                 rtllib_resp_to_probe(ieee, dest);
1931         }
1932 }
1933
1934 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1935                                      struct sk_buff *skb)
1936 {
1937         u8 dest[ETH_ALEN];
1938         int status;
1939         ieee->softmac_stats.rx_auth_rq++;
1940
1941         status = auth_rq_parse(skb, dest);
1942         if (status != -1)
1943                 rtllib_resp_to_auth(ieee, status, dest);
1944 }
1945
1946 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1947                                       struct sk_buff *skb)
1948 {
1949
1950         u8 dest[ETH_ALEN];
1951
1952         ieee->softmac_stats.rx_ass_rq++;
1953         if (assoc_rq_parse(skb, dest) != -1)
1954                 rtllib_resp_to_assoc_rq(ieee, dest);
1955
1956         printk(KERN_INFO"New client associated: %pM\n", dest);
1957 }
1958
1959 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1960 {
1961
1962         struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1963
1964         if (buf)
1965                 softmac_ps_mgmt_xmit(buf, ieee);
1966 }
1967 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1968
1969 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1970 {
1971         struct sk_buff *buf = rtllib_pspoll_func(ieee);
1972
1973         if (buf)
1974                 softmac_ps_mgmt_xmit(buf, ieee);
1975 }
1976
1977 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1978 {
1979         int timeout = ieee->ps_timeout;
1980         u8 dtim;
1981         struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1982                                         (&(ieee->PowerSaveControl));
1983
1984         if (ieee->LPSDelayCnt) {
1985                 ieee->LPSDelayCnt--;
1986                 return 0;
1987         }
1988
1989         dtim = ieee->current_network.dtim_data;
1990         if (!(dtim & RTLLIB_DTIM_VALID))
1991                 return 0;
1992         timeout = ieee->current_network.beacon_interval;
1993         ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1994         /* there's no need to nofity AP that I find you buffered
1995          * with broadcast packet */
1996         if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1997                 return 2;
1998
1999         if (!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout)))
2000                 return 0;
2001         if (!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout)))
2002                 return 0;
2003         if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
2004             (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
2005                 return 0;
2006
2007         if (time) {
2008                 if (ieee->bAwakePktSent == true) {
2009                         pPSC->LPSAwakeIntvl = 1;
2010                 } else {
2011                         u8              MaxPeriod = 1;
2012
2013                         if (pPSC->LPSAwakeIntvl == 0)
2014                                 pPSC->LPSAwakeIntvl = 1;
2015                         if (pPSC->RegMaxLPSAwakeIntvl == 0)
2016                                 MaxPeriod = 1;
2017                         else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2018                                 MaxPeriod = ieee->current_network.dtim_period;
2019                         else
2020                                 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2021                         pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2022                                                MaxPeriod) ? MaxPeriod :
2023                                                (pPSC->LPSAwakeIntvl + 1);
2024                 }
2025                 {
2026                         u8 LPSAwakeIntvl_tmp = 0;
2027                         u8 period = ieee->current_network.dtim_period;
2028                         u8 count = ieee->current_network.tim.tim_count;
2029                         if (count == 0) {
2030                                 if (pPSC->LPSAwakeIntvl > period)
2031                                         LPSAwakeIntvl_tmp = period +
2032                                                  (pPSC->LPSAwakeIntvl -
2033                                                  period) -
2034                                                  ((pPSC->LPSAwakeIntvl-period) %
2035                                                  period);
2036                                 else
2037                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2038
2039                         } else {
2040                                 if (pPSC->LPSAwakeIntvl >
2041                                     ieee->current_network.tim.tim_count)
2042                                         LPSAwakeIntvl_tmp = count +
2043                                         (pPSC->LPSAwakeIntvl - count) -
2044                                         ((pPSC->LPSAwakeIntvl-count)%period);
2045                                 else
2046                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2047                         }
2048
2049                 *time = ieee->current_network.last_dtim_sta_time
2050                         + MSECS(ieee->current_network.beacon_interval *
2051                         LPSAwakeIntvl_tmp);
2052         }
2053         }
2054
2055         return 1;
2056
2057
2058 }
2059
2060 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2061 {
2062         u64 time;
2063         short sleep;
2064         unsigned long flags, flags2;
2065
2066         spin_lock_irqsave(&ieee->lock, flags);
2067
2068         if ((ieee->ps == RTLLIB_PS_DISABLED ||
2069              ieee->iw_mode != IW_MODE_INFRA ||
2070              ieee->state != RTLLIB_LINKED)) {
2071                 RT_TRACE(COMP_DBG, "=====>%s(): no need to ps,wake up!! "
2072                          "ieee->ps is %d, ieee->iw_mode is %d, ieee->state"
2073                          " is %d\n", __func__, ieee->ps, ieee->iw_mode,
2074                           ieee->state);
2075                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2076                 rtllib_sta_wakeup(ieee, 1);
2077
2078                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2079         }
2080         sleep = rtllib_sta_ps_sleep(ieee, &time);
2081         /* 2 wake, 1 sleep, 0 do nothing */
2082         if (sleep == 0)
2083                 goto out;
2084         if (sleep == 1) {
2085                 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2086                         ieee->enter_sleep_state(ieee->dev, time);
2087                 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2088                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2089
2090                         if (ieee->ps_is_queue_empty(ieee->dev)) {
2091                                 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2092                                 ieee->ack_tx_to_ieee = 1;
2093                                 rtllib_sta_ps_send_null_frame(ieee, 1);
2094                                 ieee->ps_time = time;
2095                         }
2096                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2097
2098                 }
2099
2100                 ieee->bAwakePktSent = false;
2101
2102         } else if (sleep == 2) {
2103                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2104
2105                 rtllib_sta_wakeup(ieee, 1);
2106
2107                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2108         }
2109
2110 out:
2111         spin_unlock_irqrestore(&ieee->lock, flags);
2112
2113 }
2114
2115 void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2116 {
2117         if (ieee->sta_sleep == LPS_IS_WAKE) {
2118                 if (nl) {
2119                         if (ieee->pHTInfo->IOTAction &
2120                             HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2121                                 ieee->ack_tx_to_ieee = 1;
2122                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2123                         } else {
2124                                 ieee->ack_tx_to_ieee = 1;
2125                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2126                         }
2127                 }
2128                 return;
2129
2130         }
2131
2132         if (ieee->sta_sleep == LPS_IS_SLEEP)
2133                 ieee->sta_wake_up(ieee->dev);
2134         if (nl) {
2135                 if (ieee->pHTInfo->IOTAction &
2136                     HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2137                         ieee->ack_tx_to_ieee = 1;
2138                         rtllib_sta_ps_send_null_frame(ieee, 0);
2139                 } else {
2140                         ieee->ack_tx_to_ieee = 1;
2141                         ieee->polling = true;
2142                         rtllib_sta_ps_send_pspoll_frame(ieee);
2143                 }
2144
2145         } else {
2146                 ieee->sta_sleep = LPS_IS_WAKE;
2147                 ieee->polling = false;
2148         }
2149 }
2150
2151 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2152 {
2153         unsigned long flags, flags2;
2154
2155         spin_lock_irqsave(&ieee->lock, flags);
2156
2157         if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2158                 /* Null frame with PS bit set */
2159                 if (success) {
2160                         ieee->sta_sleep = LPS_IS_SLEEP;
2161                         ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2162                 }
2163                 /* if the card report not success we can't be sure the AP
2164                  * has not RXed so we can't assume the AP believe us awake
2165                  */
2166         } else {/* 21112005 - tx again null without PS bit if lost */
2167
2168                 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2169                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2170                         if (ieee->pHTInfo->IOTAction &
2171                             HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2172                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2173                         else
2174                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2175                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2176                 }
2177         }
2178         spin_unlock_irqrestore(&ieee->lock, flags);
2179 }
2180 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2181
2182 static void rtllib_process_action(struct rtllib_device *ieee, struct sk_buff *skb)
2183 {
2184         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2185         u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2186         u8 category = 0;
2187
2188         if (act == NULL) {
2189                 RTLLIB_DEBUG(RTLLIB_DL_ERR, "error to get payload of "
2190                              "action frame\n");
2191                 return;
2192         }
2193
2194         category = *act;
2195         act++;
2196         switch (category) {
2197         case ACT_CAT_BA:
2198                 switch (*act) {
2199                 case ACT_ADDBAREQ:
2200                         rtllib_rx_ADDBAReq(ieee, skb);
2201                         break;
2202                 case ACT_ADDBARSP:
2203                         rtllib_rx_ADDBARsp(ieee, skb);
2204                         break;
2205                 case ACT_DELBA:
2206                         rtllib_rx_DELBA(ieee, skb);
2207                         break;
2208                 }
2209                 break;
2210         default:
2211                 break;
2212         }
2213         return;
2214 }
2215
2216 inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2217                                 struct rtllib_rx_stats *rx_stats)
2218 {
2219         u16 errcode;
2220         int aid;
2221         u8 *ies;
2222         struct rtllib_assoc_response_frame *assoc_resp;
2223         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2224
2225         RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
2226                           WLAN_FC_GET_STYPE(header->frame_ctl));
2227
2228         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2229              ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2230              (ieee->iw_mode == IW_MODE_INFRA)) {
2231                 errcode = assoc_parse(ieee, skb, &aid);
2232                 if (0 == errcode) {
2233                         struct rtllib_network *network =
2234                                  kzalloc(sizeof(struct rtllib_network),
2235                                  GFP_ATOMIC);
2236
2237                         if (!network)
2238                                 return 1;
2239                         ieee->state = RTLLIB_LINKED;
2240                         ieee->assoc_id = aid;
2241                         ieee->softmac_stats.rx_ass_ok++;
2242                         /* station support qos */
2243                         /* Let the register setting default with Legacy station */
2244                         assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2245                         if (ieee->current_network.qos_data.supported == 1) {
2246                                 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2247                                                         rx_stats->len - sizeof(*assoc_resp),
2248                                                         network, rx_stats)) {
2249                                         kfree(network);
2250                                         return 1;
2251                                 } else {
2252                                         memcpy(ieee->pHTInfo->PeerHTCapBuf,
2253                                                network->bssht.bdHTCapBuf,
2254                                                network->bssht.bdHTCapLen);
2255                                         memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2256                                                network->bssht.bdHTInfoBuf,
2257                                                network->bssht.bdHTInfoLen);
2258                                 }
2259                                 if (ieee->handle_assoc_response != NULL)
2260                                         ieee->handle_assoc_response(ieee->dev,
2261                                                  (struct rtllib_assoc_response_frame *)header,
2262                                                  network);
2263                         }
2264                         kfree(network);
2265
2266                         kfree(ieee->assocresp_ies);
2267                         ieee->assocresp_ies = NULL;
2268                         ies = &(assoc_resp->info_element[0].id);
2269                         ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2270                         ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2271                                                       GFP_ATOMIC);
2272                         if (ieee->assocresp_ies)
2273                                 memcpy(ieee->assocresp_ies, ies,
2274                                        ieee->assocresp_ies_len);
2275                         else {
2276                                 printk(KERN_INFO "%s()Warning: can't alloc "
2277                                        "memory for assocresp_ies\n", __func__);
2278                                 ieee->assocresp_ies_len = 0;
2279                         }
2280                         rtllib_associate_complete(ieee);
2281                 } else {
2282                         /* aid could not been allocated */
2283                         ieee->softmac_stats.rx_ass_err++;
2284                         printk(KERN_INFO "Association response status code 0x%x\n",
2285                                 errcode);
2286                         RTLLIB_DEBUG_MGMT(
2287                                 "Association response status code 0x%x\n",
2288                                 errcode);
2289                         if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2290                                 queue_delayed_work_rsl(ieee->wq,
2291                                          &ieee->associate_procedure_wq, 0);
2292                         else
2293                                 rtllib_associate_abort(ieee);
2294                 }
2295         }
2296         return 0;
2297 }
2298
2299 inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2300                           struct rtllib_rx_stats *rx_stats)
2301 {
2302         u16 errcode;
2303         u8 *challenge;
2304         int chlen = 0;
2305         bool bSupportNmode = true, bHalfSupportNmode = false;
2306
2307         if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2308                 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2309                     (ieee->iw_mode == IW_MODE_INFRA)) {
2310                         RTLLIB_DEBUG_MGMT("Received authentication response");
2311
2312                         errcode = auth_parse(skb, &challenge, &chlen);
2313                         if (0 == errcode) {
2314                                 if (ieee->open_wep || !challenge) {
2315                                         ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2316                                         ieee->softmac_stats.rx_auth_rs_ok++;
2317                                         if (!(ieee->pHTInfo->IOTAction &
2318                                             HT_IOT_ACT_PURE_N_MODE)) {
2319                                                 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2320                                                         if (IsHTHalfNmodeAPs(ieee)) {
2321                                                                 bSupportNmode = true;
2322                                                                 bHalfSupportNmode = true;
2323                                                         } else {
2324                                                                 bSupportNmode = false;
2325                                                                 bHalfSupportNmode = false;
2326                                                         }
2327                                                 }
2328                                         }
2329                                         /* Dummy wirless mode setting to avoid
2330                                          * encryption issue */
2331                                         if (bSupportNmode) {
2332                                                 ieee->SetWirelessMode(ieee->dev,
2333                                                    ieee->current_network.mode);
2334                                         } else {
2335                                                 /*TODO*/
2336                                                 ieee->SetWirelessMode(ieee->dev,
2337                                                                       IEEE_G);
2338                                         }
2339
2340                                         if (ieee->current_network.mode ==
2341                                             IEEE_N_24G &&
2342                                             bHalfSupportNmode == true) {
2343                                                 printk(KERN_INFO "======>enter "
2344                                                        "half N mode\n");
2345                                                 ieee->bHalfWirelessN24GMode =
2346                                                                          true;
2347                                         } else
2348                                                 ieee->bHalfWirelessN24GMode =
2349                                                                          false;
2350
2351                                         rtllib_associate_step2(ieee);
2352                                 } else {
2353                                         rtllib_auth_challenge(ieee, challenge,
2354                                                               chlen);
2355                                 }
2356                         } else {
2357                                 ieee->softmac_stats.rx_auth_rs_err++;
2358                                 RTLLIB_DEBUG_MGMT("Authentication respose"
2359                                                   " status code 0x%x", errcode);
2360
2361                                 printk(KERN_INFO "Authentication respose "
2362                                        "status code 0x%x", errcode);
2363                                 rtllib_associate_abort(ieee);
2364                         }
2365
2366                 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2367                         rtllib_rx_auth_rq(ieee, skb);
2368                 }
2369         }
2370         return 0;
2371 }
2372
2373 inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2374 {
2375         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2376
2377         if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2378                 return 0;
2379
2380         /* FIXME for now repeat all the association procedure
2381         * both for disassociation and deauthentication
2382         */
2383         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2384             ieee->state == RTLLIB_LINKED &&
2385             (ieee->iw_mode == IW_MODE_INFRA)) {
2386                 printk(KERN_INFO "==========>received disassoc/deauth(%x) "
2387                        "frame, reason code:%x\n",
2388                        WLAN_FC_GET_STYPE(header->frame_ctl),
2389                        ((struct rtllib_disassoc *)skb->data)->reason);
2390                 ieee->state = RTLLIB_ASSOCIATING;
2391                 ieee->softmac_stats.reassoc++;
2392                 ieee->is_roaming = true;
2393                 ieee->LinkDetectInfo.bBusyTraffic = false;
2394                 rtllib_disassociate(ieee);
2395                 RemovePeerTS(ieee, header->addr2);
2396                 if (ieee->LedControlHandler != NULL)
2397                         ieee->LedControlHandler(ieee->dev,
2398                                                 LED_CTL_START_TO_LINK);
2399
2400                 if (!(ieee->rtllib_ap_sec_type(ieee) &
2401                     (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2402                         queue_delayed_work_rsl(ieee->wq,
2403                                        &ieee->associate_procedure_wq, 5);
2404         }
2405         return 0;
2406 }
2407
2408 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2409                                    struct sk_buff *skb,
2410                                    struct rtllib_rx_stats *rx_stats, u16 type,
2411                                    u16 stype)
2412 {
2413         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2414
2415         if (!ieee->proto_started)
2416                 return 0;
2417
2418         switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2419         case RTLLIB_STYPE_ASSOC_RESP:
2420         case RTLLIB_STYPE_REASSOC_RESP:
2421                 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2422                         return 1;
2423                 break;
2424         case RTLLIB_STYPE_ASSOC_REQ:
2425         case RTLLIB_STYPE_REASSOC_REQ:
2426                 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2427                      ieee->iw_mode == IW_MODE_MASTER)
2428                         rtllib_rx_assoc_rq(ieee, skb);
2429                 break;
2430         case RTLLIB_STYPE_AUTH:
2431                 rtllib_rx_auth(ieee, skb, rx_stats);
2432                 break;
2433         case RTLLIB_STYPE_DISASSOC:
2434         case RTLLIB_STYPE_DEAUTH:
2435                 rtllib_rx_deauth(ieee, skb);
2436                 break;
2437         case RTLLIB_STYPE_MANAGE_ACT:
2438                 rtllib_process_action(ieee, skb);
2439                 break;
2440         default:
2441                 return -1;
2442                 break;
2443         }
2444         return 0;
2445 }
2446
2447 /* following are for a simpler TX queue management.
2448  * Instead of using netif_[stop/wake]_queue the driver
2449  * will use these two functions (plus a reset one), that
2450  * will internally use the kernel netif_* and takes
2451  * care of the ieee802.11 fragmentation.
2452  * So the driver receives a fragment per time and might
2453  * call the stop function when it wants to not
2454  * have enough room to TX an entire packet.
2455  * This might be useful if each fragment needs it's own
2456  * descriptor, thus just keep a total free memory > than
2457  * the max fragmentation threshold is not enough.. If the
2458  * ieee802.11 stack passed a TXB struct then you need
2459  * to keep N free descriptors where
2460  * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2461  * In this way you need just one and the 802.11 stack
2462  * will take care of buffering fragments and pass them to
2463  * to the driver later, when it wakes the queue.
2464  */
2465 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2466 {
2467
2468         unsigned int queue_index = txb->queue_index;
2469         unsigned long flags;
2470         int  i;
2471         struct cb_desc *tcb_desc = NULL;
2472         unsigned long queue_len = 0;
2473
2474         spin_lock_irqsave(&ieee->lock, flags);
2475
2476         /* called with 2nd parm 0, no tx mgmt lock required */
2477         rtllib_sta_wakeup(ieee, 0);
2478
2479         /* update the tx status */
2480         tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2481                    MAX_DEV_ADDR_SIZE);
2482         if (tcb_desc->bMulticast)
2483                 ieee->stats.multicast++;
2484
2485         /* if xmit available, just xmit it immediately, else just insert it to
2486          * the wait queue */
2487         for (i = 0; i < txb->nr_frags; i++) {
2488                 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2489                 if ((queue_len  != 0) ||\
2490                     (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2491                     (ieee->queue_stop)) {
2492                         /* insert the skb packet to the wait queue */
2493                         /* as for the completion function, it does not need
2494                          * to check it any more.
2495                          * */
2496                         if (queue_len < 200)
2497                                 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2498                                                txb->fragments[i]);
2499                         else
2500                                 kfree_skb(txb->fragments[i]);
2501                 } else {
2502                         ieee->softmac_data_hard_start_xmit(
2503                                         txb->fragments[i],
2504                                         ieee->dev, ieee->rate);
2505                 }
2506         }
2507
2508         rtllib_txb_free(txb);
2509
2510         spin_unlock_irqrestore(&ieee->lock, flags);
2511
2512 }
2513
2514 /* called with ieee->lock acquired */
2515 static void rtllib_resume_tx(struct rtllib_device *ieee)
2516 {
2517         int i;
2518         for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags;
2519              i++) {
2520
2521                 if (ieee->queue_stop) {
2522                         ieee->tx_pending.frag = i;
2523                         return;
2524                 } else {
2525
2526                         ieee->softmac_data_hard_start_xmit(
2527                                 ieee->tx_pending.txb->fragments[i],
2528                                 ieee->dev, ieee->rate);
2529                         ieee->stats.tx_packets++;
2530                 }
2531         }
2532
2533         rtllib_txb_free(ieee->tx_pending.txb);
2534         ieee->tx_pending.txb = NULL;
2535 }
2536
2537
2538 void rtllib_reset_queue(struct rtllib_device *ieee)
2539 {
2540         unsigned long flags;
2541
2542         spin_lock_irqsave(&ieee->lock, flags);
2543         init_mgmt_queue(ieee);
2544         if (ieee->tx_pending.txb) {
2545                 rtllib_txb_free(ieee->tx_pending.txb);
2546                 ieee->tx_pending.txb = NULL;
2547         }
2548         ieee->queue_stop = 0;
2549         spin_unlock_irqrestore(&ieee->lock, flags);
2550
2551 }
2552 EXPORT_SYMBOL(rtllib_reset_queue);
2553
2554 void rtllib_wake_queue(struct rtllib_device *ieee)
2555 {
2556
2557         unsigned long flags;
2558         struct sk_buff *skb;
2559         struct rtllib_hdr_3addr  *header;
2560
2561         spin_lock_irqsave(&ieee->lock, flags);
2562         if (!ieee->queue_stop)
2563                 goto exit;
2564
2565         ieee->queue_stop = 0;
2566
2567         if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) {
2568                 while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) {
2569
2570                         header = (struct rtllib_hdr_3addr  *) skb->data;
2571
2572                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2573
2574                         if (ieee->seq_ctrl[0] == 0xFFF)
2575                                 ieee->seq_ctrl[0] = 0;
2576                         else
2577                                 ieee->seq_ctrl[0]++;
2578
2579                         ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
2580                                                            ieee->basic_rate);
2581                 }
2582         }
2583         if (!ieee->queue_stop && ieee->tx_pending.txb)
2584                 rtllib_resume_tx(ieee);
2585
2586         if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) {
2587                 ieee->softmac_stats.swtxawake++;
2588                 netif_wake_queue(ieee->dev);
2589         }
2590
2591 exit:
2592         spin_unlock_irqrestore(&ieee->lock, flags);
2593 }
2594
2595
2596 void rtllib_stop_queue(struct rtllib_device *ieee)
2597 {
2598
2599         if (!netif_queue_stopped(ieee->dev)) {
2600                 netif_stop_queue(ieee->dev);
2601                 ieee->softmac_stats.swtxstop++;
2602         }
2603         ieee->queue_stop = 1;
2604
2605 }
2606
2607 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2608 {
2609         unsigned int i;
2610         for (i = 0; i < ieee->dev->num_tx_queues; i++)
2611                 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2612
2613         netif_tx_stop_all_queues(ieee->dev);
2614 }
2615
2616 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2617 {
2618         netif_tx_wake_all_queues(ieee->dev);
2619 }
2620
2621 inline void rtllib_randomize_cell(struct rtllib_device *ieee)
2622 {
2623
2624         random_ether_addr(ieee->current_network.bssid);
2625 }
2626
2627 /* called in user context only */
2628 void rtllib_start_master_bss(struct rtllib_device *ieee)
2629 {
2630         ieee->assoc_id = 1;
2631
2632         if (ieee->current_network.ssid_len == 0) {
2633                 strncpy(ieee->current_network.ssid,
2634                         RTLLIB_DEFAULT_TX_ESSID,
2635                         IW_ESSID_MAX_SIZE);
2636
2637                 ieee->current_network.ssid_len =
2638                                  strlen(RTLLIB_DEFAULT_TX_ESSID);
2639                 ieee->ssid_set = 1;
2640         }
2641
2642         memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN);
2643
2644         ieee->set_chan(ieee->dev, ieee->current_network.channel);
2645         ieee->state = RTLLIB_LINKED;
2646         ieee->link_change(ieee->dev);
2647         notify_wx_assoc_event(ieee);
2648
2649         if (ieee->data_hard_resume)
2650                 ieee->data_hard_resume(ieee->dev);
2651
2652         netif_carrier_on(ieee->dev);
2653 }
2654
2655 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2656 {
2657         /* reset hardware status */
2658         if (ieee->raw_tx) {
2659                 if (ieee->data_hard_resume)
2660                         ieee->data_hard_resume(ieee->dev);
2661
2662                 netif_carrier_on(ieee->dev);
2663         }
2664 }
2665
2666 static void rtllib_start_ibss_wq(void *data)
2667 {
2668         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2669                                      struct rtllib_device, start_ibss_wq);
2670         /* iwconfig mode ad-hoc will schedule this and return
2671          * on the other hand this will block further iwconfig SET
2672          * operations because of the wx_sem hold.
2673          * Anyway some most set operations set a flag to speed-up
2674          * (abort) this wq (when syncro scanning) before sleeping
2675          * on the semaphore
2676          */
2677         if (!ieee->proto_started) {
2678                 printk(KERN_INFO "==========oh driver down return\n");
2679                 return;
2680         }
2681         down(&ieee->wx_sem);
2682
2683         if (ieee->current_network.ssid_len == 0) {
2684                 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2685                 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2686                 ieee->ssid_set = 1;
2687         }
2688
2689         ieee->state = RTLLIB_NOLINK;
2690         ieee->mode = IEEE_G;
2691         /* check if we have this cell in our network list */
2692         rtllib_softmac_check_all_nets(ieee);
2693
2694
2695         /* if not then the state is not linked. Maybe the user switched to
2696          * ad-hoc mode just after being in monitor mode, or just after
2697          * being very few time in managed mode (so the card have had no
2698          * time to scan all the chans..) or we have just run up the iface
2699          * after setting ad-hoc mode. So we have to give another try..
2700          * Here, in ibss mode, should be safe to do this without extra care
2701          * (in bss mode we had to make sure no-one tried to associate when
2702          * we had just checked the ieee->state and we was going to start the
2703          * scan) because in ibss mode the rtllib_new_net function, when
2704          * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2705          * so, at worst, we waste a bit of time to initiate an unneeded syncro
2706          * scan, that will stop at the first round because it sees the state
2707          * associated.
2708          */
2709         if (ieee->state == RTLLIB_NOLINK)
2710                 rtllib_start_scan_syncro(ieee, 0);
2711
2712         /* the network definitively is not here.. create a new cell */
2713         if (ieee->state == RTLLIB_NOLINK) {
2714                 printk(KERN_INFO "creating new IBSS cell\n");
2715                 ieee->current_network.channel = ieee->IbssStartChnl;
2716                 if (!ieee->wap_set)
2717                         rtllib_randomize_cell(ieee);
2718
2719                 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2720
2721                         ieee->current_network.rates_len = 4;
2722
2723                         ieee->current_network.rates[0] =
2724                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2725                         ieee->current_network.rates[1] =
2726                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2727                         ieee->current_network.rates[2] =
2728                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2729                         ieee->current_network.rates[3] =
2730                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2731
2732                 } else
2733                         ieee->current_network.rates_len = 0;
2734
2735                 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2736                         ieee->current_network.rates_ex_len = 8;
2737
2738                         ieee->current_network.rates_ex[0] =
2739                                                  RTLLIB_OFDM_RATE_6MB;
2740                         ieee->current_network.rates_ex[1] =
2741                                                  RTLLIB_OFDM_RATE_9MB;
2742                         ieee->current_network.rates_ex[2] =
2743                                                  RTLLIB_OFDM_RATE_12MB;
2744                         ieee->current_network.rates_ex[3] =
2745                                                  RTLLIB_OFDM_RATE_18MB;
2746                         ieee->current_network.rates_ex[4] =
2747                                                  RTLLIB_OFDM_RATE_24MB;
2748                         ieee->current_network.rates_ex[5] =
2749                                                  RTLLIB_OFDM_RATE_36MB;
2750                         ieee->current_network.rates_ex[6] =
2751                                                  RTLLIB_OFDM_RATE_48MB;
2752                         ieee->current_network.rates_ex[7] =
2753                                                  RTLLIB_OFDM_RATE_54MB;
2754
2755                         ieee->rate = 108;
2756                 } else {
2757                         ieee->current_network.rates_ex_len = 0;
2758                         ieee->rate = 22;
2759                 }
2760
2761                 ieee->current_network.qos_data.supported = 0;
2762                 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2763                 ieee->current_network.mode = ieee->mode;
2764                 ieee->current_network.atim_window = 0;
2765                 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2766         }
2767
2768         printk(KERN_INFO "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2769         if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2770                 HTUseDefaultSetting(ieee);
2771         else
2772                 ieee->pHTInfo->bCurrentHTSupport = false;
2773
2774         ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2775                               (u8 *)(&ieee->state));
2776
2777         ieee->state = RTLLIB_LINKED;
2778         ieee->link_change(ieee->dev);
2779
2780         HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2781         if (ieee->LedControlHandler != NULL)
2782                 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2783
2784         rtllib_start_send_beacons(ieee);
2785
2786         notify_wx_assoc_event(ieee);
2787
2788         if (ieee->data_hard_resume)
2789                 ieee->data_hard_resume(ieee->dev);
2790
2791         netif_carrier_on(ieee->dev);
2792
2793         up(&ieee->wx_sem);
2794 }
2795
2796 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2797 {
2798         queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, MSECS(150));
2799 }
2800
2801 /* this is called only in user context, with wx_sem held */
2802 void rtllib_start_bss(struct rtllib_device *ieee)
2803 {
2804         unsigned long flags;
2805         if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2806                 if (!ieee->bGlobalDomain)
2807                         return;
2808         }
2809         /* check if we have already found the net we
2810          * are interested in (if any).
2811          * if not (we are disassociated and we are not
2812          * in associating / authenticating phase) start the background scanning.
2813          */
2814         rtllib_softmac_check_all_nets(ieee);
2815
2816         /* ensure no-one start an associating process (thus setting
2817          * the ieee->state to rtllib_ASSOCIATING) while we
2818          * have just checked it and we are going to enable scan.
2819          * The rtllib_new_net function is always called with
2820          * lock held (from both rtllib_softmac_check_all_nets and
2821          * the rx path), so we cannot be in the middle of such function
2822          */
2823         spin_lock_irqsave(&ieee->lock, flags);
2824
2825         if (ieee->state == RTLLIB_NOLINK)
2826                 rtllib_start_scan(ieee);
2827         spin_unlock_irqrestore(&ieee->lock, flags);
2828 }
2829
2830 static void rtllib_link_change_wq(void *data)
2831 {
2832         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2833                                      struct rtllib_device, link_change_wq);
2834         ieee->link_change(ieee->dev);
2835 }
2836 /* called only in userspace context */
2837 void rtllib_disassociate(struct rtllib_device *ieee)
2838 {
2839         netif_carrier_off(ieee->dev);
2840         if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2841                         rtllib_reset_queue(ieee);
2842
2843         if (ieee->data_hard_stop)
2844                         ieee->data_hard_stop(ieee->dev);
2845         if (IS_DOT11D_ENABLE(ieee))
2846                 Dot11d_Reset(ieee);
2847         ieee->state = RTLLIB_NOLINK;
2848         ieee->is_set_key = false;
2849         ieee->wap_set = 0;
2850
2851         queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0);
2852
2853         notify_wx_assoc_event(ieee);
2854 }
2855
2856 static void rtllib_associate_retry_wq(void *data)
2857 {
2858         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2859                                      struct rtllib_device, associate_retry_wq);
2860         unsigned long flags;
2861
2862         down(&ieee->wx_sem);
2863         if (!ieee->proto_started)
2864                 goto exit;
2865
2866         if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2867                 goto exit;
2868
2869         /* until we do not set the state to RTLLIB_NOLINK
2870         * there are no possibility to have someone else trying
2871         * to start an association procedure (we get here with
2872         * ieee->state = RTLLIB_ASSOCIATING).
2873         * When we set the state to RTLLIB_NOLINK it is possible
2874         * that the RX path run an attempt to associate, but
2875         * both rtllib_softmac_check_all_nets and the
2876         * RX path works with ieee->lock held so there are no
2877         * problems. If we are still disassociated then start a scan.
2878         * the lock here is necessary to ensure no one try to start
2879         * an association procedure when we have just checked the
2880         * state and we are going to start the scan.
2881         */
2882         ieee->beinretry = true;
2883         ieee->state = RTLLIB_NOLINK;
2884
2885         rtllib_softmac_check_all_nets(ieee);
2886
2887         spin_lock_irqsave(&ieee->lock, flags);
2888
2889         if (ieee->state == RTLLIB_NOLINK)
2890                 rtllib_start_scan(ieee);
2891         spin_unlock_irqrestore(&ieee->lock, flags);
2892
2893         ieee->beinretry = false;
2894 exit:
2895         up(&ieee->wx_sem);
2896 }
2897
2898 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2899 {
2900         u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2901
2902         struct sk_buff *skb;
2903         struct rtllib_probe_response *b;
2904         skb = rtllib_probe_resp(ieee, broadcast_addr);
2905
2906         if (!skb)
2907                 return NULL;
2908
2909         b = (struct rtllib_probe_response *) skb->data;
2910         b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2911
2912         return skb;
2913
2914 }
2915
2916 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2917 {
2918         struct sk_buff *skb;
2919         struct rtllib_probe_response *b;
2920
2921         skb = rtllib_get_beacon_(ieee);
2922         if (!skb)
2923                 return NULL;
2924
2925         b = (struct rtllib_probe_response *) skb->data;
2926         b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2927
2928         if (ieee->seq_ctrl[0] == 0xFFF)
2929                 ieee->seq_ctrl[0] = 0;
2930         else
2931                 ieee->seq_ctrl[0]++;
2932
2933         return skb;
2934 }
2935 EXPORT_SYMBOL(rtllib_get_beacon);
2936
2937 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2938                                   u8 shutdown)
2939 {
2940         rtllib_stop_scan_syncro(ieee);
2941         down(&ieee->wx_sem);
2942         rtllib_stop_protocol(ieee, shutdown);
2943         up(&ieee->wx_sem);
2944 }
2945 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2946
2947
2948 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2949 {
2950         if (!ieee->proto_started)
2951                 return;
2952
2953         if (shutdown) {
2954                 ieee->proto_started = 0;
2955                 ieee->proto_stoppping = 1;
2956                 if (ieee->rtllib_ips_leave != NULL)
2957                         ieee->rtllib_ips_leave(ieee->dev);
2958         }
2959
2960         rtllib_stop_send_beacons(ieee);
2961         del_timer_sync(&ieee->associate_timer);
2962         cancel_delayed_work(&ieee->associate_retry_wq);
2963         cancel_delayed_work(&ieee->start_ibss_wq);
2964         cancel_delayed_work(&ieee->link_change_wq);
2965         rtllib_stop_scan(ieee);
2966
2967         if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2968                 ieee->state = RTLLIB_NOLINK;
2969
2970         if (ieee->state == RTLLIB_LINKED) {
2971                 if (ieee->iw_mode == IW_MODE_INFRA)
2972                         SendDisassociation(ieee, 1, deauth_lv_ss);
2973                 rtllib_disassociate(ieee);
2974         }
2975
2976         if (shutdown) {
2977                 RemoveAllTS(ieee);
2978                 ieee->proto_stoppping = 0;
2979         }
2980         kfree(ieee->assocreq_ies);
2981         ieee->assocreq_ies = NULL;
2982         ieee->assocreq_ies_len = 0;
2983         kfree(ieee->assocresp_ies);
2984         ieee->assocresp_ies = NULL;
2985         ieee->assocresp_ies_len = 0;
2986 }
2987
2988 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2989 {
2990         down(&ieee->wx_sem);
2991         rtllib_start_protocol(ieee);
2992         up(&ieee->wx_sem);
2993 }
2994 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
2995
2996 void rtllib_start_protocol(struct rtllib_device *ieee)
2997 {
2998         short ch = 0;
2999         int i = 0;
3000
3001         rtllib_update_active_chan_map(ieee);
3002
3003         if (ieee->proto_started)
3004                 return;
3005
3006         ieee->proto_started = 1;
3007
3008         if (ieee->current_network.channel == 0) {
3009                 do {
3010                         ch++;
3011                         if (ch > MAX_CHANNEL_NUMBER)
3012                                 return; /* no channel found */
3013                 } while (!ieee->active_channel_map[ch]);
3014                 ieee->current_network.channel = ch;
3015         }
3016
3017         if (ieee->current_network.beacon_interval == 0)
3018                 ieee->current_network.beacon_interval = 100;
3019
3020         for (i = 0; i < 17; i++) {
3021                 ieee->last_rxseq_num[i] = -1;
3022                 ieee->last_rxfrag_num[i] = -1;
3023                 ieee->last_packet_time[i] = 0;
3024         }
3025
3026         if (ieee->UpdateBeaconInterruptHandler)
3027                 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
3028
3029         ieee->wmm_acm = 0;
3030         /* if the user set the MAC of the ad-hoc cell and then
3031          * switch to managed mode, shall we  make sure that association
3032          * attempts does not fail just because the user provide the essid
3033          * and the nic is still checking for the AP MAC ??
3034          */
3035         if (ieee->iw_mode == IW_MODE_INFRA) {
3036                 rtllib_start_bss(ieee);
3037         } else if (ieee->iw_mode == IW_MODE_ADHOC) {
3038                 if (ieee->UpdateBeaconInterruptHandler)
3039                         ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
3040
3041                 rtllib_start_ibss(ieee);
3042
3043         } else if (ieee->iw_mode == IW_MODE_MASTER) {
3044                 rtllib_start_master_bss(ieee);
3045         } else if (ieee->iw_mode == IW_MODE_MONITOR) {
3046                 rtllib_start_monitor_mode(ieee);
3047         }
3048 }
3049
3050 void rtllib_softmac_init(struct rtllib_device *ieee)
3051 {
3052         int i;
3053         memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
3054
3055         ieee->state = RTLLIB_NOLINK;
3056         for (i = 0; i < 5; i++)
3057                 ieee->seq_ctrl[i] = 0;
3058         ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
3059         if (!ieee->pDot11dInfo)
3060                 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for DOT11D\n");
3061         ieee->LinkDetectInfo.SlotIndex = 0;
3062         ieee->LinkDetectInfo.SlotNum = 2;
3063         ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
3064         ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
3065         ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
3066         ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
3067         ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
3068         ieee->bIsAggregateFrame = false;
3069         ieee->assoc_id = 0;
3070         ieee->queue_stop = 0;
3071         ieee->scanning_continue = 0;
3072         ieee->softmac_features = 0;
3073         ieee->wap_set = 0;
3074         ieee->ssid_set = 0;
3075         ieee->proto_started = 0;
3076         ieee->proto_stoppping = 0;
3077         ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
3078         ieee->rate = 22;
3079         ieee->ps = RTLLIB_PS_DISABLED;
3080         ieee->sta_sleep = LPS_IS_WAKE;
3081
3082         ieee->Regdot11HTOperationalRateSet[0] = 0xff;
3083         ieee->Regdot11HTOperationalRateSet[1] = 0xff;
3084         ieee->Regdot11HTOperationalRateSet[4] = 0x01;
3085
3086         ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3087         ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3088         ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3089
3090         ieee->FirstIe_InScan = false;
3091         ieee->actscanning = false;
3092         ieee->beinretry = false;
3093         ieee->is_set_key = false;
3094         init_mgmt_queue(ieee);
3095
3096         ieee->sta_edca_param[0] = 0x0000A403;
3097         ieee->sta_edca_param[1] = 0x0000A427;
3098         ieee->sta_edca_param[2] = 0x005E4342;
3099         ieee->sta_edca_param[3] = 0x002F3262;
3100         ieee->aggregation = true;
3101         ieee->enable_rx_imm_BA = 1;
3102         ieee->tx_pending.txb = NULL;
3103
3104         _setup_timer(&ieee->associate_timer,
3105                     rtllib_associate_abort_cb,
3106                     (unsigned long) ieee);
3107
3108         _setup_timer(&ieee->beacon_timer,
3109                     rtllib_send_beacon_cb,
3110                     (unsigned long) ieee);
3111
3112
3113         ieee->wq = create_workqueue(DRV_NAME);
3114
3115         INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3116                               (void *)rtllib_link_change_wq, ieee);
3117         INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3118                               (void *)rtllib_start_ibss_wq, ieee);
3119         INIT_WORK_RSL(&ieee->associate_complete_wq,
3120                       (void *)rtllib_associate_complete_wq, ieee);
3121         INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3122                               (void *)rtllib_associate_procedure_wq, ieee);
3123         INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3124                               (void *)rtllib_softmac_scan_wq, ieee);
3125         INIT_DELAYED_WORK_RSL(&ieee->softmac_hint11d_wq,
3126                               (void *)rtllib_softmac_hint11d_wq, ieee);
3127         INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3128                               (void *)rtllib_associate_retry_wq, ieee);
3129         INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3130                       ieee);
3131
3132         sema_init(&ieee->wx_sem, 1);
3133         sema_init(&ieee->scan_sem, 1);
3134         sema_init(&ieee->ips_sem, 1);
3135
3136         spin_lock_init(&ieee->mgmt_tx_lock);
3137         spin_lock_init(&ieee->beacon_lock);
3138
3139         tasklet_init(&ieee->ps_task,
3140              (void(*)(unsigned long)) rtllib_sta_ps,
3141              (unsigned long)ieee);
3142
3143 }
3144
3145 void rtllib_softmac_free(struct rtllib_device *ieee)
3146 {
3147         down(&ieee->wx_sem);
3148         kfree(ieee->pDot11dInfo);
3149         ieee->pDot11dInfo = NULL;
3150         del_timer_sync(&ieee->associate_timer);
3151
3152         cancel_delayed_work(&ieee->associate_retry_wq);
3153         destroy_workqueue(ieee->wq);
3154         up(&ieee->wx_sem);
3155 }
3156
3157 /********************************************************
3158  * Start of WPA code.                                   *
3159  * this is stolen from the ipw2200 driver               *
3160  ********************************************************/
3161
3162
3163 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3164 {
3165         /* This is called when wpa_supplicant loads and closes the driver
3166          * interface. */
3167         printk(KERN_INFO "%s WPA\n", value ? "enabling" : "disabling");
3168         ieee->wpa_enabled = value;
3169         memset(ieee->ap_mac_addr, 0, 6);
3170         return 0;
3171 }
3172
3173
3174 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3175                                    int wpa_ie_len)
3176 {
3177         /* make sure WPA is enabled */
3178         rtllib_wpa_enable(ieee, 1);
3179
3180         rtllib_disassociate(ieee);
3181 }
3182
3183
3184 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3185 {
3186
3187         int ret = 0;
3188
3189         switch (command) {
3190         case IEEE_MLME_STA_DEAUTH:
3191                 break;
3192
3193         case IEEE_MLME_STA_DISASSOC:
3194                 rtllib_disassociate(ieee);
3195                 break;
3196
3197         default:
3198                 printk(KERN_INFO "Unknown MLME request: %d\n", command);
3199                 ret = -EOPNOTSUPP;
3200         }
3201
3202         return ret;
3203 }
3204
3205
3206 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3207                               struct ieee_param *param, int plen)
3208 {
3209         u8 *buf;
3210
3211         if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3212             (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3213                 return -EINVAL;
3214
3215         if (param->u.wpa_ie.len) {
3216                 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
3217                               GFP_KERNEL);
3218                 if (buf == NULL)
3219                         return -ENOMEM;
3220
3221                 kfree(ieee->wpa_ie);
3222                 ieee->wpa_ie = buf;
3223                 ieee->wpa_ie_len = param->u.wpa_ie.len;
3224         } else {
3225                 kfree(ieee->wpa_ie);
3226                 ieee->wpa_ie = NULL;
3227                 ieee->wpa_ie_len = 0;
3228         }
3229
3230         rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3231         return 0;
3232 }
3233
3234 #define AUTH_ALG_OPEN_SYSTEM                    0x1
3235 #define AUTH_ALG_SHARED_KEY                     0x2
3236 #define AUTH_ALG_LEAP                           0x4
3237 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3238 {
3239
3240         struct rtllib_security sec = {
3241                 .flags = SEC_AUTH_MODE,
3242         };
3243         int ret = 0;
3244
3245         if (value & AUTH_ALG_SHARED_KEY) {
3246                 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3247                 ieee->open_wep = 0;
3248                 ieee->auth_mode = 1;
3249         } else if (value & AUTH_ALG_OPEN_SYSTEM) {
3250                 sec.auth_mode = WLAN_AUTH_OPEN;
3251                 ieee->open_wep = 1;
3252                 ieee->auth_mode = 0;
3253         } else if (value & AUTH_ALG_LEAP) {
3254                 sec.auth_mode = WLAN_AUTH_LEAP  >> 6;
3255                 ieee->open_wep = 1;
3256                 ieee->auth_mode = 2;
3257         }
3258
3259
3260         if (ieee->set_security)
3261                 ieee->set_security(ieee->dev, &sec);
3262
3263         return ret;
3264 }
3265
3266 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3267 {
3268         int ret = 0;
3269         unsigned long flags;
3270
3271         switch (name) {
3272         case IEEE_PARAM_WPA_ENABLED:
3273                 ret = rtllib_wpa_enable(ieee, value);
3274                 break;
3275
3276         case IEEE_PARAM_TKIP_COUNTERMEASURES:
3277                 ieee->tkip_countermeasures = value;
3278                 break;
3279
3280         case IEEE_PARAM_DROP_UNENCRYPTED:
3281         {
3282                 /* HACK:
3283                  *
3284                  * wpa_supplicant calls set_wpa_enabled when the driver
3285                  * is loaded and unloaded, regardless of if WPA is being
3286                  * used.  No other calls are made which can be used to
3287                  * determine if encryption will be used or not prior to
3288                  * association being expected.  If encryption is not being
3289                  * used, drop_unencrypted is set to false, else true -- we
3290                  * can use this to determine if the CAP_PRIVACY_ON bit should
3291                  * be set.
3292                  */
3293                 struct rtllib_security sec = {
3294                         .flags = SEC_ENABLED,
3295                         .enabled = value,
3296                 };
3297                 ieee->drop_unencrypted = value;
3298                 /* We only change SEC_LEVEL for open mode. Others
3299                  * are set by ipw_wpa_set_encryption.
3300                  */
3301                 if (!value) {
3302                         sec.flags |= SEC_LEVEL;
3303                         sec.level = SEC_LEVEL_0;
3304                 } else {
3305                         sec.flags |= SEC_LEVEL;
3306                         sec.level = SEC_LEVEL_1;
3307                 }
3308                 if (ieee->set_security)
3309                         ieee->set_security(ieee->dev, &sec);
3310                 break;
3311         }
3312
3313         case IEEE_PARAM_PRIVACY_INVOKED:
3314                 ieee->privacy_invoked = value;
3315                 break;
3316
3317         case IEEE_PARAM_AUTH_ALGS:
3318                 ret = rtllib_wpa_set_auth_algs(ieee, value);
3319                 break;
3320
3321         case IEEE_PARAM_IEEE_802_1X:
3322                 ieee->ieee802_1x = value;
3323                 break;
3324         case IEEE_PARAM_WPAX_SELECT:
3325                 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3326                 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3327                 break;
3328
3329         default:
3330                 printk(KERN_INFO "Unknown WPA param: %d\n", name);
3331                 ret = -EOPNOTSUPP;
3332         }
3333
3334         return ret;
3335 }
3336
3337 /* implementation borrowed from hostap driver */
3338 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3339                                   struct ieee_param *param, int param_len,
3340                                   u8 is_mesh)
3341 {
3342         int ret = 0;
3343         struct lib80211_crypto_ops *ops;
3344         struct lib80211_crypt_data **crypt;
3345
3346         struct rtllib_security sec = {
3347                 .flags = 0,
3348         };
3349
3350         param->u.crypt.err = 0;
3351         param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3352
3353         if (param_len !=
3354             (int) ((char *) param->u.crypt.key - (char *) param) +
3355             param->u.crypt.key_len) {
3356                 printk(KERN_INFO "Len mismatch %d, %d\n", param_len,
3357                                param->u.crypt.key_len);
3358                 return -EINVAL;
3359         }
3360         if (is_broadcast_ether_addr(param->sta_addr)) {
3361                 if (param->u.crypt.idx >= NUM_WEP_KEYS)
3362                         return -EINVAL;
3363                 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
3364         } else {
3365                 return -EINVAL;
3366         }
3367
3368         if (strcmp(param->u.crypt.alg, "none") == 0) {
3369                 if (crypt) {
3370                         sec.enabled = 0;
3371                         sec.level = SEC_LEVEL_0;
3372                         sec.flags |= SEC_ENABLED | SEC_LEVEL;
3373                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3374                 }
3375                 goto done;
3376         }
3377         sec.enabled = 1;
3378         sec.flags |= SEC_ENABLED;
3379
3380         /* IPW HW cannot build TKIP MIC, host decryption still needed. */
3381         if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3382             strcmp(param->u.crypt.alg, "R-TKIP"))
3383                 goto skip_host_crypt;
3384
3385         ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3386         if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3387                 request_module("rtllib_crypt_wep");
3388                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3389         } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3390                 request_module("rtllib_crypt_tkip");
3391                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3392         } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3393                 request_module("rtllib_crypt_ccmp");
3394                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3395         }
3396         if (ops == NULL) {
3397                 printk(KERN_INFO "unknown crypto alg '%s'\n",
3398                        param->u.crypt.alg);
3399                 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3400                 ret = -EINVAL;
3401                 goto done;
3402         }
3403         if (*crypt == NULL || (*crypt)->ops != ops) {
3404                 struct lib80211_crypt_data *new_crypt;
3405
3406                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3407
3408                 new_crypt = kmalloc(sizeof(*new_crypt), GFP_KERNEL);
3409                 if (new_crypt == NULL) {
3410                         ret = -ENOMEM;
3411                         goto done;
3412                 }
3413                 memset(new_crypt, 0, sizeof(struct lib80211_crypt_data));
3414                 new_crypt->ops = ops;
3415                 if (new_crypt->ops)
3416                         new_crypt->priv =
3417                                 new_crypt->ops->init(param->u.crypt.idx);
3418
3419                 if (new_crypt->priv == NULL) {
3420                         kfree(new_crypt);
3421                         param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3422                         ret = -EINVAL;
3423                         goto done;
3424                 }
3425
3426                 *crypt = new_crypt;
3427         }
3428
3429         if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3430             (*crypt)->ops->set_key(param->u.crypt.key,
3431             param->u.crypt.key_len, param->u.crypt.seq,
3432             (*crypt)->priv) < 0) {
3433                 printk(KERN_INFO "key setting failed\n");
3434                 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3435                 ret = -EINVAL;
3436                 goto done;
3437         }
3438
3439  skip_host_crypt:
3440         if (param->u.crypt.set_tx) {
3441                 ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
3442                 sec.active_key = param->u.crypt.idx;
3443                 sec.flags |= SEC_ACTIVE_KEY;
3444         } else
3445                 sec.flags &= ~SEC_ACTIVE_KEY;
3446
3447         if (param->u.crypt.alg != NULL) {
3448                 memcpy(sec.keys[param->u.crypt.idx],
3449                        param->u.crypt.key,
3450                        param->u.crypt.key_len);
3451                 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3452                 sec.flags |= (1 << param->u.crypt.idx);
3453
3454                 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3455                         sec.flags |= SEC_LEVEL;
3456                         sec.level = SEC_LEVEL_1;
3457                 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3458                         sec.flags |= SEC_LEVEL;
3459                         sec.level = SEC_LEVEL_2;
3460                 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3461                         sec.flags |= SEC_LEVEL;
3462                         sec.level = SEC_LEVEL_3;
3463                 }
3464         }
3465  done:
3466         if (ieee->set_security)
3467                 ieee->set_security(ieee->dev, &sec);
3468
3469         /* Do not reset port if card is in Managed mode since resetting will
3470          * generate new IEEE 802.11 authentication which may end up in looping
3471          * with IEEE 802.1X.  If your hardware requires a reset after WEP
3472          * configuration (for example... Prism2), implement the reset_port in
3473          * the callbacks structures used to initialize the 802.11 stack. */
3474         if (ieee->reset_on_keychange &&
3475             ieee->iw_mode != IW_MODE_INFRA &&
3476             ieee->reset_port &&
3477             ieee->reset_port(ieee->dev)) {
3478                 printk(KERN_INFO "reset_port failed\n");
3479                 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3480                 return -EINVAL;
3481         }
3482
3483         return ret;
3484 }
3485
3486 inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon,
3487                 struct rtllib_device *ieee, u16 asRsn)
3488 {
3489         struct sk_buff *skb;
3490         struct rtllib_disauth *disauth;
3491         int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3492
3493         skb = dev_alloc_skb(len);
3494         if (!skb)
3495                 return NULL;
3496
3497         skb_reserve(skb, ieee->tx_headroom);
3498
3499         disauth = (struct rtllib_disauth *) skb_put(skb,
3500                   sizeof(struct rtllib_disauth));
3501         disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3502         disauth->header.duration_id = 0;
3503
3504         memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN);
3505         memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3506         memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN);
3507
3508         disauth->reason = cpu_to_le16(asRsn);
3509         return skb;
3510 }
3511
3512 inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon,
3513                 struct rtllib_device *ieee, u16 asRsn)
3514 {
3515         struct sk_buff *skb;
3516         struct rtllib_disassoc *disass;
3517         int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3518         skb = dev_alloc_skb(len);
3519
3520         if (!skb)
3521                 return NULL;
3522
3523         skb_reserve(skb, ieee->tx_headroom);
3524
3525         disass = (struct rtllib_disassoc *) skb_put(skb,
3526                                          sizeof(struct rtllib_disassoc));
3527         disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3528         disass->header.duration_id = 0;
3529
3530         memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
3531         memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3532         memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);
3533
3534         disass->reason = cpu_to_le16(asRsn);
3535         return skb;
3536 }
3537
3538 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3539 {
3540         struct rtllib_network *beacon = &ieee->current_network;
3541         struct sk_buff *skb;
3542
3543         if (deauth)
3544                 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3545         else
3546                 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3547
3548         if (skb)
3549                 softmac_mgmt_xmit(skb, ieee);
3550 }
3551
3552 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3553 {
3554         static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3555         static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3556         int wpa_ie_len = ieee->wpa_ie_len;
3557         struct lib80211_crypt_data *crypt;
3558         int encrypt;
3559
3560         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3561         encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3562                   || (ieee->host_encrypt && crypt && crypt->ops &&
3563                   (0 == strcmp(crypt->ops->name, "R-WEP")));
3564
3565         /* simply judge  */
3566         if (encrypt && (wpa_ie_len == 0)) {
3567                 return SEC_ALG_WEP;
3568         } else if ((wpa_ie_len != 0)) {
3569                 if (((ieee->wpa_ie[0] == 0xdd) &&
3570                     (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3571                     ((ieee->wpa_ie[0] == 0x30) &&
3572                     (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3573                         return SEC_ALG_CCMP;
3574                 else
3575                         return SEC_ALG_TKIP;
3576         } else {
3577                 return SEC_ALG_NONE;
3578         }
3579 }
3580
3581 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3582                                 u8 is_mesh)
3583 {
3584         struct ieee_param *param;
3585         int ret = 0;
3586
3587         down(&ieee->wx_sem);
3588
3589         if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3590                 ret = -EINVAL;
3591                 goto out;
3592         }
3593
3594         param = kmalloc(p->length, GFP_KERNEL);
3595         if (param == NULL) {
3596                 ret = -ENOMEM;
3597                 goto out;
3598         }
3599         if (copy_from_user(param, p->pointer, p->length)) {
3600                 kfree(param);
3601                 ret = -EFAULT;
3602                 goto out;
3603         }
3604
3605         switch (param->cmd) {
3606         case IEEE_CMD_SET_WPA_PARAM:
3607                 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3608                                         param->u.wpa_param.value);
3609                 break;
3610
3611         case IEEE_CMD_SET_WPA_IE:
3612                 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3613                 break;
3614
3615         case IEEE_CMD_SET_ENCRYPTION:
3616                 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3617                 break;
3618
3619         case IEEE_CMD_MLME:
3620                 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3621                                    param->u.mlme.reason_code);
3622                 break;
3623
3624         default:
3625                 printk(KERN_INFO "Unknown WPA supplicant request: %d\n",
3626                        param->cmd);
3627                 ret = -EOPNOTSUPP;
3628                 break;
3629         }
3630
3631         if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3632                 ret = -EFAULT;
3633
3634         kfree(param);
3635 out:
3636         up(&ieee->wx_sem);
3637
3638         return ret;
3639 }
3640 EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
3641
3642 void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3643 {
3644         u8      OpMode;
3645         u8      i;
3646         bool    bFilterOutNonAssociatedBSSID = false;
3647
3648         rtllib->state = RTLLIB_NOLINK;
3649
3650         for (i = 0; i < 6; i++)
3651                 rtllib->current_network.bssid[i] = 0x55;
3652
3653         rtllib->OpMode = RT_OP_MODE_NO_LINK;
3654         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3655                                 rtllib->current_network.bssid);
3656         OpMode = RT_OP_MODE_NO_LINK;
3657         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3658         rtllib_stop_send_beacons(rtllib);
3659
3660         bFilterOutNonAssociatedBSSID = false;
3661         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3662                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3663         notify_wx_assoc_event(rtllib);
3664
3665 }
3666
3667 void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta,
3668                                     u8 asRsn)
3669 {
3670         u8 i;
3671         u8      OpMode;
3672
3673         RemovePeerTS(rtllib, asSta);
3674
3675         if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) {
3676                 rtllib->state = RTLLIB_NOLINK;
3677
3678                 for (i = 0; i < 6; i++)
3679                         rtllib->current_network.bssid[i] = 0x22;
3680                 OpMode = RT_OP_MODE_NO_LINK;
3681                 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3682                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3683                                         (u8 *)(&OpMode));
3684                 rtllib_disassociate(rtllib);
3685
3686                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3687                                         rtllib->current_network.bssid);
3688
3689         }
3690
3691 }
3692
3693 void
3694 rtllib_MgntDisconnectAP(
3695         struct rtllib_device *rtllib,
3696         u8 asRsn
3697 )
3698 {
3699         bool bFilterOutNonAssociatedBSSID = false;
3700
3701         bFilterOutNonAssociatedBSSID = false;
3702         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3703                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3704         rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3705                                        asRsn);
3706
3707         rtllib->state = RTLLIB_NOLINK;
3708 }
3709
3710 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3711 {
3712         if (rtllib->ps != RTLLIB_PS_DISABLED)
3713                 rtllib->sta_wake_up(rtllib->dev);
3714
3715         if (rtllib->state == RTLLIB_LINKED) {
3716                 if (rtllib->iw_mode == IW_MODE_ADHOC)
3717                         rtllib_MgntDisconnectIBSS(rtllib);
3718                 if (rtllib->iw_mode == IW_MODE_INFRA)
3719                         rtllib_MgntDisconnectAP(rtllib, asRsn);
3720
3721         }
3722
3723         return true;
3724 }
3725 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3726
3727 void notify_wx_assoc_event(struct rtllib_device *ieee)
3728 {
3729         union iwreq_data wrqu;
3730
3731         if (ieee->cannot_notify)
3732                 return;
3733
3734         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3735         if (ieee->state == RTLLIB_LINKED)
3736                 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3737                        ETH_ALEN);
3738         else {
3739
3740                 printk(KERN_INFO "%s(): Tell user space disconnected\n",
3741                        __func__);
3742                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
3743         }
3744         wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3745 }
3746 EXPORT_SYMBOL(notify_wx_assoc_event);