drivers/staging/rtl8192e/rtllib_softmac.c

   1 /* IEEE 802.11 SoftMAC layer
   2  * Copyright (c) 2005 Andrea Merello <andreamrl@tiscali.it>
   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 = kmalloc(*chlen, GFP_ATOMIC);
1805                         memcpy(*challenge, t, *chlen);  /*TODO - check here*/
1806                 }
1807         }
1808         return cpu_to_le16(a->status);
1809 }
1810
1811 static int auth_rq_parse(struct sk_buff *skb, u8 *dest)
1812 {
1813         struct rtllib_authentication *a;
1814
1815         if (skb->len <  (sizeof(struct rtllib_authentication) -
1816             sizeof(struct rtllib_info_element))) {
1817                 RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n",
1818                                   skb->len);
1819                 return -1;
1820         }
1821         a = (struct rtllib_authentication *) skb->data;
1822
1823         memcpy(dest, a->header.addr2, ETH_ALEN);
1824
1825         if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1826                 return  WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1827
1828         return WLAN_STATUS_SUCCESS;
1829 }
1830
1831 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1832                             u8 *src)
1833 {
1834         u8 *tag;
1835         u8 *skbend;
1836         u8 *ssid = NULL;
1837         u8 ssidlen = 0;
1838         struct rtllib_hdr_3addr   *header =
1839                 (struct rtllib_hdr_3addr   *) skb->data;
1840         bool bssid_match;
1841
1842         if (skb->len < sizeof(struct rtllib_hdr_3addr))
1843                 return -1; /* corrupted */
1844
1845         bssid_match =
1846           (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) &&
1847           (!is_broadcast_ether_addr(header->addr3));
1848         if (bssid_match)
1849                 return -1;
1850
1851         memcpy(src, header->addr2, ETH_ALEN);
1852
1853         skbend = (u8 *)skb->data + skb->len;
1854
1855         tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1856
1857         while (tag + 1 < skbend) {
1858                 if (*tag == 0) {
1859                         ssid = tag + 2;
1860                         ssidlen = *(tag + 1);
1861                         break;
1862                 }
1863                 tag++; /* point to the len field */
1864                 tag = tag + *(tag); /* point to the last data byte of the tag */
1865                 tag++; /* point to the next tag */
1866         }
1867
1868         if (ssidlen == 0)
1869                 return 1;
1870
1871         if (!ssid)
1872                 return 1; /* ssid not found in tagged param */
1873
1874         return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1875 }
1876
1877 static int assoc_rq_parse(struct sk_buff *skb, u8 *dest)
1878 {
1879         struct rtllib_assoc_request_frame *a;
1880
1881         if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1882                 sizeof(struct rtllib_info_element))) {
1883
1884                 RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len);
1885                 return -1;
1886         }
1887
1888         a = (struct rtllib_assoc_request_frame *) skb->data;
1889
1890         memcpy(dest, a->header.addr2, ETH_ALEN);
1891
1892         return 0;
1893 }
1894
1895 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1896                               int *aid)
1897 {
1898         struct rtllib_assoc_response_frame *response_head;
1899         u16 status_code;
1900
1901         if (skb->len <  sizeof(struct rtllib_assoc_response_frame)) {
1902                 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1903                 return 0xcafe;
1904         }
1905
1906         response_head = (struct rtllib_assoc_response_frame *) skb->data;
1907         *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1908
1909         status_code = le16_to_cpu(response_head->status);
1910         if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1911            status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1912            ((ieee->mode == IEEE_G) &&
1913            (ieee->current_network.mode == IEEE_N_24G) &&
1914            (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1915                 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1916         } else {
1917                 ieee->AsocRetryCount = 0;
1918         }
1919
1920         return le16_to_cpu(response_head->status);
1921 }
1922
1923 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1924 {
1925         u8 dest[ETH_ALEN];
1926         ieee->softmac_stats.rx_probe_rq++;
1927         if (probe_rq_parse(ieee, skb, dest) > 0) {
1928                 ieee->softmac_stats.tx_probe_rs++;
1929                 rtllib_resp_to_probe(ieee, dest);
1930         }
1931 }
1932
1933 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1934                                      struct sk_buff *skb)
1935 {
1936         u8 dest[ETH_ALEN];
1937         int status;
1938         ieee->softmac_stats.rx_auth_rq++;
1939
1940         status = auth_rq_parse(skb, dest);
1941         if (status != -1)
1942                 rtllib_resp_to_auth(ieee, status, dest);
1943 }
1944
1945 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1946                                       struct sk_buff *skb)
1947 {
1948
1949         u8 dest[ETH_ALEN];
1950
1951         ieee->softmac_stats.rx_ass_rq++;
1952         if (assoc_rq_parse(skb, dest) != -1)
1953                 rtllib_resp_to_assoc_rq(ieee, dest);
1954
1955         printk(KERN_INFO"New client associated: %pM\n", dest);
1956 }
1957
1958 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1959 {
1960
1961         struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1962
1963         if (buf)
1964                 softmac_ps_mgmt_xmit(buf, ieee);
1965 }
1966 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1967
1968 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1969 {
1970         struct sk_buff *buf = rtllib_pspoll_func(ieee);
1971
1972         if (buf)
1973                 softmac_ps_mgmt_xmit(buf, ieee);
1974 }
1975
1976 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1977 {
1978         int timeout = ieee->ps_timeout;
1979         u8 dtim;
1980         struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1981                                         (&(ieee->PowerSaveControl));
1982
1983         if (ieee->LPSDelayCnt) {
1984                 ieee->LPSDelayCnt--;
1985                 return 0;
1986         }
1987
1988         dtim = ieee->current_network.dtim_data;
1989         if (!(dtim & RTLLIB_DTIM_VALID))
1990                 return 0;
1991         timeout = ieee->current_network.beacon_interval;
1992         ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1993         /* there's no need to nofity AP that I find you buffered
1994          * with broadcast packet */
1995         if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1996                 return 2;
1997
1998         if (!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout)))
1999                 return 0;
2000         if (!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout)))
2001                 return 0;
2002         if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
2003             (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
2004                 return 0;
2005
2006         if (time) {
2007                 if (ieee->bAwakePktSent == true) {
2008                         pPSC->LPSAwakeIntvl = 1;
2009                 } else {
2010                         u8              MaxPeriod = 1;
2011
2012                         if (pPSC->LPSAwakeIntvl == 0)
2013                                 pPSC->LPSAwakeIntvl = 1;
2014                         if (pPSC->RegMaxLPSAwakeIntvl == 0)
2015                                 MaxPeriod = 1;
2016                         else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2017                                 MaxPeriod = ieee->current_network.dtim_period;
2018                         else
2019                                 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2020                         pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2021                                                MaxPeriod) ? MaxPeriod :
2022                                                (pPSC->LPSAwakeIntvl + 1);
2023                 }
2024                 {
2025                         u8 LPSAwakeIntvl_tmp = 0;
2026                         u8 period = ieee->current_network.dtim_period;
2027                         u8 count = ieee->current_network.tim.tim_count;
2028                         if (count == 0) {
2029                                 if (pPSC->LPSAwakeIntvl > period)
2030                                         LPSAwakeIntvl_tmp = period +
2031                                                  (pPSC->LPSAwakeIntvl -
2032                                                  period) -
2033                                                  ((pPSC->LPSAwakeIntvl-period) %
2034                                                  period);
2035                                 else
2036                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2037
2038                         } else {
2039                                 if (pPSC->LPSAwakeIntvl >
2040                                     ieee->current_network.tim.tim_count)
2041                                         LPSAwakeIntvl_tmp = count +
2042                                         (pPSC->LPSAwakeIntvl - count) -
2043                                         ((pPSC->LPSAwakeIntvl-count)%period);
2044                                 else
2045                                         LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2046                         }
2047
2048                 *time = ieee->current_network.last_dtim_sta_time
2049                         + MSECS(ieee->current_network.beacon_interval *
2050                         LPSAwakeIntvl_tmp);
2051         }
2052         }
2053
2054         return 1;
2055
2056
2057 }
2058
2059 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2060 {
2061         u64 time;
2062         short sleep;
2063         unsigned long flags, flags2;
2064
2065         spin_lock_irqsave(&ieee->lock, flags);
2066
2067         if ((ieee->ps == RTLLIB_PS_DISABLED ||
2068              ieee->iw_mode != IW_MODE_INFRA ||
2069              ieee->state != RTLLIB_LINKED)) {
2070                 RT_TRACE(COMP_DBG, "=====>%s(): no need to ps,wake up!! "
2071                          "ieee->ps is %d, ieee->iw_mode is %d, ieee->state"
2072                          " is %d\n", __func__, ieee->ps, ieee->iw_mode,
2073                           ieee->state);
2074                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2075                 rtllib_sta_wakeup(ieee, 1);
2076
2077                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2078         }
2079         sleep = rtllib_sta_ps_sleep(ieee, &time);
2080         /* 2 wake, 1 sleep, 0 do nothing */
2081         if (sleep == 0)
2082                 goto out;
2083         if (sleep == 1) {
2084                 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2085                         ieee->enter_sleep_state(ieee->dev, time);
2086                 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2087                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2088
2089                         if (ieee->ps_is_queue_empty(ieee->dev)) {
2090                                 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2091                                 ieee->ack_tx_to_ieee = 1;
2092                                 rtllib_sta_ps_send_null_frame(ieee, 1);
2093                                 ieee->ps_time = time;
2094                         }
2095                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2096
2097                 }
2098
2099                 ieee->bAwakePktSent = false;
2100
2101         } else if (sleep == 2) {
2102                 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2103
2104                 rtllib_sta_wakeup(ieee, 1);
2105
2106                 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2107         }
2108
2109 out:
2110         spin_unlock_irqrestore(&ieee->lock, flags);
2111
2112 }
2113
2114 void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2115 {
2116         if (ieee->sta_sleep == LPS_IS_WAKE) {
2117                 if (nl) {
2118                         if (ieee->pHTInfo->IOTAction &
2119                             HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2120                                 ieee->ack_tx_to_ieee = 1;
2121                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2122                         } else {
2123                                 ieee->ack_tx_to_ieee = 1;
2124                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2125                         }
2126                 }
2127                 return;
2128
2129         }
2130
2131         if (ieee->sta_sleep == LPS_IS_SLEEP)
2132                 ieee->sta_wake_up(ieee->dev);
2133         if (nl) {
2134                 if (ieee->pHTInfo->IOTAction &
2135                     HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2136                         ieee->ack_tx_to_ieee = 1;
2137                         rtllib_sta_ps_send_null_frame(ieee, 0);
2138                 } else {
2139                         ieee->ack_tx_to_ieee = 1;
2140                         ieee->polling = true;
2141                         rtllib_sta_ps_send_pspoll_frame(ieee);
2142                 }
2143
2144         } else {
2145                 ieee->sta_sleep = LPS_IS_WAKE;
2146                 ieee->polling = false;
2147         }
2148 }
2149
2150 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2151 {
2152         unsigned long flags, flags2;
2153
2154         spin_lock_irqsave(&ieee->lock, flags);
2155
2156         if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2157                 /* Null frame with PS bit set */
2158                 if (success) {
2159                         ieee->sta_sleep = LPS_IS_SLEEP;
2160                         ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2161                 }
2162                 /* if the card report not success we can't be sure the AP
2163                  * has not RXed so we can't assume the AP believe us awake
2164                  */
2165         } else {/* 21112005 - tx again null without PS bit if lost */
2166
2167                 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2168                         spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2169                         if (ieee->pHTInfo->IOTAction &
2170                             HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2171                                 rtllib_sta_ps_send_null_frame(ieee, 0);
2172                         else
2173                                 rtllib_sta_ps_send_pspoll_frame(ieee);
2174                         spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2175                 }
2176         }
2177         spin_unlock_irqrestore(&ieee->lock, flags);
2178 }
2179 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2180
2181 static void rtllib_process_action(struct rtllib_device *ieee, struct sk_buff *skb)
2182 {
2183         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2184         u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2185         u8 category = 0;
2186
2187         if (act == NULL) {
2188                 RTLLIB_DEBUG(RTLLIB_DL_ERR, "error to get payload of "
2189                              "action frame\n");
2190                 return;
2191         }
2192
2193         category = *act;
2194         act++;
2195         switch (category) {
2196         case ACT_CAT_BA:
2197                 switch (*act) {
2198                 case ACT_ADDBAREQ:
2199                         rtllib_rx_ADDBAReq(ieee, skb);
2200                         break;
2201                 case ACT_ADDBARSP:
2202                         rtllib_rx_ADDBARsp(ieee, skb);
2203                         break;
2204                 case ACT_DELBA:
2205                         rtllib_rx_DELBA(ieee, skb);
2206                         break;
2207                 }
2208                 break;
2209         default:
2210                 break;
2211         }
2212         return;
2213 }
2214
2215 inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2216                                 struct rtllib_rx_stats *rx_stats)
2217 {
2218         u16 errcode;
2219         int aid;
2220         u8 *ies;
2221         struct rtllib_assoc_response_frame *assoc_resp;
2222         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2223
2224         RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
2225                           WLAN_FC_GET_STYPE(header->frame_ctl));
2226
2227         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2228              ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2229              (ieee->iw_mode == IW_MODE_INFRA)) {
2230                 errcode = assoc_parse(ieee, skb, &aid);
2231                 if (0 == errcode) {
2232                         struct rtllib_network *network =
2233                                  kzalloc(sizeof(struct rtllib_network),
2234                                  GFP_ATOMIC);
2235
2236                         if (!network)
2237                                 return 1;
2238                         ieee->state = RTLLIB_LINKED;
2239                         ieee->assoc_id = aid;
2240                         ieee->softmac_stats.rx_ass_ok++;
2241                         /* station support qos */
2242                         /* Let the register setting default with Legacy station */
2243                         assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2244                         if (ieee->current_network.qos_data.supported == 1) {
2245                                 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2246                                                         rx_stats->len - sizeof(*assoc_resp),
2247                                                         network, rx_stats)) {
2248                                         kfree(network);
2249                                         return 1;
2250                                 } else {
2251                                         memcpy(ieee->pHTInfo->PeerHTCapBuf,
2252                                                network->bssht.bdHTCapBuf,
2253                                                network->bssht.bdHTCapLen);
2254                                         memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2255                                                network->bssht.bdHTInfoBuf,
2256                                                network->bssht.bdHTInfoLen);
2257                                 }
2258                                 if (ieee->handle_assoc_response != NULL)
2259                                         ieee->handle_assoc_response(ieee->dev,
2260                                                  (struct rtllib_assoc_response_frame *)header,
2261                                                  network);
2262                         }
2263                         kfree(network);
2264
2265                         kfree(ieee->assocresp_ies);
2266                         ieee->assocresp_ies = NULL;
2267                         ies = &(assoc_resp->info_element[0].id);
2268                         ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2269                         ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2270                                                       GFP_ATOMIC);
2271                         if (ieee->assocresp_ies)
2272                                 memcpy(ieee->assocresp_ies, ies,
2273                                        ieee->assocresp_ies_len);
2274                         else {
2275                                 printk(KERN_INFO "%s()Warning: can't alloc "
2276                                        "memory for assocresp_ies\n", __func__);
2277                                 ieee->assocresp_ies_len = 0;
2278                         }
2279                         rtllib_associate_complete(ieee);
2280                 } else {
2281                         /* aid could not been allocated */
2282                         ieee->softmac_stats.rx_ass_err++;
2283                         printk(KERN_INFO "Association response status code 0x%x\n",
2284                                 errcode);
2285                         RTLLIB_DEBUG_MGMT(
2286                                 "Association response status code 0x%x\n",
2287                                 errcode);
2288                         if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2289                                 queue_delayed_work_rsl(ieee->wq,
2290                                          &ieee->associate_procedure_wq, 0);
2291                         else
2292                                 rtllib_associate_abort(ieee);
2293                 }
2294         }
2295         return 0;
2296 }
2297
2298 inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2299                           struct rtllib_rx_stats *rx_stats)
2300 {
2301         u16 errcode;
2302         u8 *challenge;
2303         int chlen = 0;
2304         bool bSupportNmode = true, bHalfSupportNmode = false;
2305
2306         if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2307                 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2308                     (ieee->iw_mode == IW_MODE_INFRA)) {
2309                         RTLLIB_DEBUG_MGMT("Received authentication response");
2310
2311                         errcode = auth_parse(skb, &challenge, &chlen);
2312                         if (0 == errcode) {
2313                                 if (ieee->open_wep || !challenge) {
2314                                         ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2315                                         ieee->softmac_stats.rx_auth_rs_ok++;
2316                                         if (!(ieee->pHTInfo->IOTAction &
2317                                             HT_IOT_ACT_PURE_N_MODE)) {
2318                                                 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2319                                                         if (IsHTHalfNmodeAPs(ieee)) {
2320                                                                 bSupportNmode = true;
2321                                                                 bHalfSupportNmode = true;
2322                                                         } else {
2323                                                                 bSupportNmode = false;
2324                                                                 bHalfSupportNmode = false;
2325                                                         }
2326                                                 }
2327                                         }
2328                                         /* Dummy wirless mode setting to avoid
2329                                          * encryption issue */
2330                                         if (bSupportNmode) {
2331                                                 ieee->SetWirelessMode(ieee->dev,
2332                                                    ieee->current_network.mode);
2333                                         } else {
2334                                                 /*TODO*/
2335                                                 ieee->SetWirelessMode(ieee->dev,
2336                                                                       IEEE_G);
2337                                         }
2338
2339                                         if (ieee->current_network.mode ==
2340                                             IEEE_N_24G &&
2341                                             bHalfSupportNmode == true) {
2342                                                 printk(KERN_INFO "======>enter "
2343                                                        "half N mode\n");
2344                                                 ieee->bHalfWirelessN24GMode =
2345                                                                          true;
2346                                         } else
2347                                                 ieee->bHalfWirelessN24GMode =
2348                                                                          false;
2349
2350                                         rtllib_associate_step2(ieee);
2351                                 } else {
2352                                         rtllib_auth_challenge(ieee, challenge,
2353                                                               chlen);
2354                                 }
2355                         } else {
2356                                 ieee->softmac_stats.rx_auth_rs_err++;
2357                                 RTLLIB_DEBUG_MGMT("Authentication respose"
2358                                                   " status code 0x%x", errcode);
2359
2360                                 printk(KERN_INFO "Authentication respose "
2361                                        "status code 0x%x", errcode);
2362                                 rtllib_associate_abort(ieee);
2363                         }
2364
2365                 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2366                         rtllib_rx_auth_rq(ieee, skb);
2367                 }
2368         }
2369         return 0;
2370 }
2371
2372 inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2373 {
2374         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2375
2376         if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2377                 return 0;
2378
2379         /* FIXME for now repeat all the association procedure
2380         * both for disassociation and deauthentication
2381         */
2382         if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2383             ieee->state == RTLLIB_LINKED &&
2384             (ieee->iw_mode == IW_MODE_INFRA)) {
2385                 printk(KERN_INFO "==========>received disassoc/deauth(%x) "
2386                        "frame, reason code:%x\n",
2387                        WLAN_FC_GET_STYPE(header->frame_ctl),
2388                        ((struct rtllib_disassoc *)skb->data)->reason);
2389                 ieee->state = RTLLIB_ASSOCIATING;
2390                 ieee->softmac_stats.reassoc++;
2391                 ieee->is_roaming = true;
2392                 ieee->LinkDetectInfo.bBusyTraffic = false;
2393                 rtllib_disassociate(ieee);
2394                 RemovePeerTS(ieee, header->addr2);
2395                 if (ieee->LedControlHandler != NULL)
2396                         ieee->LedControlHandler(ieee->dev,
2397                                                 LED_CTL_START_TO_LINK);
2398
2399                 if (!(ieee->rtllib_ap_sec_type(ieee) &
2400                     (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2401                         queue_delayed_work_rsl(ieee->wq,
2402                                        &ieee->associate_procedure_wq, 5);
2403         }
2404         return 0;
2405 }
2406
2407 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2408                                    struct sk_buff *skb,
2409                                    struct rtllib_rx_stats *rx_stats, u16 type,
2410                                    u16 stype)
2411 {
2412         struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2413
2414         if (!ieee->proto_started)
2415                 return 0;
2416
2417         switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2418         case RTLLIB_STYPE_ASSOC_RESP:
2419         case RTLLIB_STYPE_REASSOC_RESP:
2420                 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2421                         return 1;
2422                 break;
2423         case RTLLIB_STYPE_ASSOC_REQ:
2424         case RTLLIB_STYPE_REASSOC_REQ:
2425                 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2426                      ieee->iw_mode == IW_MODE_MASTER)
2427                         rtllib_rx_assoc_rq(ieee, skb);
2428                 break;
2429         case RTLLIB_STYPE_AUTH:
2430                 rtllib_rx_auth(ieee, skb, rx_stats);
2431                 break;
2432         case RTLLIB_STYPE_DISASSOC:
2433         case RTLLIB_STYPE_DEAUTH:
2434                 rtllib_rx_deauth(ieee, skb);
2435                 break;
2436         case RTLLIB_STYPE_MANAGE_ACT:
2437                 rtllib_process_action(ieee, skb);
2438                 break;
2439         default:
2440                 return -1;
2441                 break;
2442         }
2443         return 0;
2444 }
2445
2446 /* following are for a simpler TX queue management.
2447  * Instead of using netif_[stop/wake]_queue the driver
2448  * will use these two functions (plus a reset one), that
2449  * will internally use the kernel netif_* and takes
2450  * care of the ieee802.11 fragmentation.
2451  * So the driver receives a fragment per time and might
2452  * call the stop function when it wants to not
2453  * have enough room to TX an entire packet.
2454  * This might be useful if each fragment needs it's own
2455  * descriptor, thus just keep a total free memory > than
2456  * the max fragmentation threshold is not enough.. If the
2457  * ieee802.11 stack passed a TXB struct then you need
2458  * to keep N free descriptors where
2459  * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2460  * In this way you need just one and the 802.11 stack
2461  * will take care of buffering fragments and pass them to
2462  * to the driver later, when it wakes the queue.
2463  */
2464 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2465 {
2466
2467         unsigned int queue_index = txb->queue_index;
2468         unsigned long flags;
2469         int  i;
2470         struct cb_desc *tcb_desc = NULL;
2471         unsigned long queue_len = 0;
2472
2473         spin_lock_irqsave(&ieee->lock, flags);
2474
2475         /* called with 2nd parm 0, no tx mgmt lock required */
2476         rtllib_sta_wakeup(ieee, 0);
2477
2478         /* update the tx status */
2479         tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2480                    MAX_DEV_ADDR_SIZE);
2481         if (tcb_desc->bMulticast)
2482                 ieee->stats.multicast++;
2483
2484         /* if xmit available, just xmit it immediately, else just insert it to
2485          * the wait queue */
2486         for (i = 0; i < txb->nr_frags; i++) {
2487                 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2488                 if ((queue_len  != 0) ||\
2489                     (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2490                     (ieee->queue_stop)) {
2491                         /* insert the skb packet to the wait queue */
2492                         /* as for the completion function, it does not need
2493                          * to check it any more.
2494                          * */
2495                         if (queue_len < 200)
2496                                 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2497                                                txb->fragments[i]);
2498                         else
2499                                 kfree_skb(txb->fragments[i]);
2500                 } else {
2501                         ieee->softmac_data_hard_start_xmit(
2502                                         txb->fragments[i],
2503                                         ieee->dev, ieee->rate);
2504                 }
2505         }
2506
2507         rtllib_txb_free(txb);
2508
2509         spin_unlock_irqrestore(&ieee->lock, flags);
2510
2511 }
2512
2513 /* called with ieee->lock acquired */
2514 static void rtllib_resume_tx(struct rtllib_device *ieee)
2515 {
2516         int i;
2517         for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags;
2518              i++) {
2519
2520                 if (ieee->queue_stop) {
2521                         ieee->tx_pending.frag = i;
2522                         return;
2523                 } else {
2524
2525                         ieee->softmac_data_hard_start_xmit(
2526                                 ieee->tx_pending.txb->fragments[i],
2527                                 ieee->dev, ieee->rate);
2528                         ieee->stats.tx_packets++;
2529                 }
2530         }
2531
2532         rtllib_txb_free(ieee->tx_pending.txb);
2533         ieee->tx_pending.txb = NULL;
2534 }
2535
2536
2537 void rtllib_reset_queue(struct rtllib_device *ieee)
2538 {
2539         unsigned long flags;
2540
2541         spin_lock_irqsave(&ieee->lock, flags);
2542         init_mgmt_queue(ieee);
2543         if (ieee->tx_pending.txb) {
2544                 rtllib_txb_free(ieee->tx_pending.txb);
2545                 ieee->tx_pending.txb = NULL;
2546         }
2547         ieee->queue_stop = 0;
2548         spin_unlock_irqrestore(&ieee->lock, flags);
2549
2550 }
2551 EXPORT_SYMBOL(rtllib_reset_queue);
2552
2553 void rtllib_wake_queue(struct rtllib_device *ieee)
2554 {
2555
2556         unsigned long flags;
2557         struct sk_buff *skb;
2558         struct rtllib_hdr_3addr  *header;
2559
2560         spin_lock_irqsave(&ieee->lock, flags);
2561         if (!ieee->queue_stop)
2562                 goto exit;
2563
2564         ieee->queue_stop = 0;
2565
2566         if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) {
2567                 while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) {
2568
2569                         header = (struct rtllib_hdr_3addr  *) skb->data;
2570
2571                         header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2572
2573                         if (ieee->seq_ctrl[0] == 0xFFF)
2574                                 ieee->seq_ctrl[0] = 0;
2575                         else
2576                                 ieee->seq_ctrl[0]++;
2577
2578                         ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
2579                                                            ieee->basic_rate);
2580                 }
2581         }
2582         if (!ieee->queue_stop && ieee->tx_pending.txb)
2583                 rtllib_resume_tx(ieee);
2584
2585         if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) {
2586                 ieee->softmac_stats.swtxawake++;
2587                 netif_wake_queue(ieee->dev);
2588         }
2589
2590 exit:
2591         spin_unlock_irqrestore(&ieee->lock, flags);
2592 }
2593
2594
2595 void rtllib_stop_queue(struct rtllib_device *ieee)
2596 {
2597
2598         if (!netif_queue_stopped(ieee->dev)) {
2599                 netif_stop_queue(ieee->dev);
2600                 ieee->softmac_stats.swtxstop++;
2601         }
2602         ieee->queue_stop = 1;
2603
2604 }
2605
2606 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2607 {
2608         unsigned int i;
2609         for (i = 0; i < ieee->dev->num_tx_queues; i++)
2610                 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2611
2612         netif_tx_stop_all_queues(ieee->dev);
2613 }
2614
2615 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2616 {
2617         netif_tx_wake_all_queues(ieee->dev);
2618 }
2619
2620 inline void rtllib_randomize_cell(struct rtllib_device *ieee)
2621 {
2622
2623         random_ether_addr(ieee->current_network.bssid);
2624 }
2625
2626 /* called in user context only */
2627 void rtllib_start_master_bss(struct rtllib_device *ieee)
2628 {
2629         ieee->assoc_id = 1;
2630
2631         if (ieee->current_network.ssid_len == 0) {
2632                 strncpy(ieee->current_network.ssid,
2633                         RTLLIB_DEFAULT_TX_ESSID,
2634                         IW_ESSID_MAX_SIZE);
2635
2636                 ieee->current_network.ssid_len =
2637                                  strlen(RTLLIB_DEFAULT_TX_ESSID);
2638                 ieee->ssid_set = 1;
2639         }
2640
2641         memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN);
2642
2643         ieee->set_chan(ieee->dev, ieee->current_network.channel);
2644         ieee->state = RTLLIB_LINKED;
2645         ieee->link_change(ieee->dev);
2646         notify_wx_assoc_event(ieee);
2647
2648         if (ieee->data_hard_resume)
2649                 ieee->data_hard_resume(ieee->dev);
2650
2651         netif_carrier_on(ieee->dev);
2652 }
2653
2654 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2655 {
2656         /* reset hardware status */
2657         if (ieee->raw_tx) {
2658                 if (ieee->data_hard_resume)
2659                         ieee->data_hard_resume(ieee->dev);
2660
2661                 netif_carrier_on(ieee->dev);
2662         }
2663 }
2664
2665 static void rtllib_start_ibss_wq(void *data)
2666 {
2667         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2668                                      struct rtllib_device, start_ibss_wq);
2669         /* iwconfig mode ad-hoc will schedule this and return
2670          * on the other hand this will block further iwconfig SET
2671          * operations because of the wx_sem hold.
2672          * Anyway some most set operations set a flag to speed-up
2673          * (abort) this wq (when syncro scanning) before sleeping
2674          * on the semaphore
2675          */
2676         if (!ieee->proto_started) {
2677                 printk(KERN_INFO "==========oh driver down return\n");
2678                 return;
2679         }
2680         down(&ieee->wx_sem);
2681
2682         if (ieee->current_network.ssid_len == 0) {
2683                 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2684                 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2685                 ieee->ssid_set = 1;
2686         }
2687
2688         ieee->state = RTLLIB_NOLINK;
2689         ieee->mode = IEEE_G;
2690         /* check if we have this cell in our network list */
2691         rtllib_softmac_check_all_nets(ieee);
2692
2693
2694         /* if not then the state is not linked. Maybe the user switched to
2695          * ad-hoc mode just after being in monitor mode, or just after
2696          * being very few time in managed mode (so the card have had no
2697          * time to scan all the chans..) or we have just run up the iface
2698          * after setting ad-hoc mode. So we have to give another try..
2699          * Here, in ibss mode, should be safe to do this without extra care
2700          * (in bss mode we had to make sure no-one tried to associate when
2701          * we had just checked the ieee->state and we was going to start the
2702          * scan) because in ibss mode the rtllib_new_net function, when
2703          * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2704          * so, at worst, we waste a bit of time to initiate an unneeded syncro
2705          * scan, that will stop at the first round because it sees the state
2706          * associated.
2707          */
2708         if (ieee->state == RTLLIB_NOLINK)
2709                 rtllib_start_scan_syncro(ieee, 0);
2710
2711         /* the network definitively is not here.. create a new cell */
2712         if (ieee->state == RTLLIB_NOLINK) {
2713                 printk(KERN_INFO "creating new IBSS cell\n");
2714                 ieee->current_network.channel = ieee->IbssStartChnl;
2715                 if (!ieee->wap_set)
2716                         rtllib_randomize_cell(ieee);
2717
2718                 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2719
2720                         ieee->current_network.rates_len = 4;
2721
2722                         ieee->current_network.rates[0] =
2723                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2724                         ieee->current_network.rates[1] =
2725                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2726                         ieee->current_network.rates[2] =
2727                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2728                         ieee->current_network.rates[3] =
2729                                  RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2730
2731                 } else
2732                         ieee->current_network.rates_len = 0;
2733
2734                 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2735                         ieee->current_network.rates_ex_len = 8;
2736
2737                         ieee->current_network.rates_ex[0] =
2738                                                  RTLLIB_OFDM_RATE_6MB;
2739                         ieee->current_network.rates_ex[1] =
2740                                                  RTLLIB_OFDM_RATE_9MB;
2741                         ieee->current_network.rates_ex[2] =
2742                                                  RTLLIB_OFDM_RATE_12MB;
2743                         ieee->current_network.rates_ex[3] =
2744                                                  RTLLIB_OFDM_RATE_18MB;
2745                         ieee->current_network.rates_ex[4] =
2746                                                  RTLLIB_OFDM_RATE_24MB;
2747                         ieee->current_network.rates_ex[5] =
2748                                                  RTLLIB_OFDM_RATE_36MB;
2749                         ieee->current_network.rates_ex[6] =
2750                                                  RTLLIB_OFDM_RATE_48MB;
2751                         ieee->current_network.rates_ex[7] =
2752                                                  RTLLIB_OFDM_RATE_54MB;
2753
2754                         ieee->rate = 108;
2755                 } else {
2756                         ieee->current_network.rates_ex_len = 0;
2757                         ieee->rate = 22;
2758                 }
2759
2760                 ieee->current_network.qos_data.supported = 0;
2761                 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2762                 ieee->current_network.mode = ieee->mode;
2763                 ieee->current_network.atim_window = 0;
2764                 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2765         }
2766
2767         printk(KERN_INFO "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2768         if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2769                 HTUseDefaultSetting(ieee);
2770         else
2771                 ieee->pHTInfo->bCurrentHTSupport = false;
2772
2773         ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2774                               (u8 *)(&ieee->state));
2775
2776         ieee->state = RTLLIB_LINKED;
2777         ieee->link_change(ieee->dev);
2778
2779         HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2780         if (ieee->LedControlHandler != NULL)
2781                 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2782
2783         rtllib_start_send_beacons(ieee);
2784
2785         notify_wx_assoc_event(ieee);
2786
2787         if (ieee->data_hard_resume)
2788                 ieee->data_hard_resume(ieee->dev);
2789
2790         netif_carrier_on(ieee->dev);
2791
2792         up(&ieee->wx_sem);
2793 }
2794
2795 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2796 {
2797         queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, MSECS(150));
2798 }
2799
2800 /* this is called only in user context, with wx_sem held */
2801 void rtllib_start_bss(struct rtllib_device *ieee)
2802 {
2803         unsigned long flags;
2804         if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2805                 if (!ieee->bGlobalDomain)
2806                         return;
2807         }
2808         /* check if we have already found the net we
2809          * are interested in (if any).
2810          * if not (we are disassociated and we are not
2811          * in associating / authenticating phase) start the background scanning.
2812          */
2813         rtllib_softmac_check_all_nets(ieee);
2814
2815         /* ensure no-one start an associating process (thus setting
2816          * the ieee->state to rtllib_ASSOCIATING) while we
2817          * have just checked it and we are going to enable scan.
2818          * The rtllib_new_net function is always called with
2819          * lock held (from both rtllib_softmac_check_all_nets and
2820          * the rx path), so we cannot be in the middle of such function
2821          */
2822         spin_lock_irqsave(&ieee->lock, flags);
2823
2824         if (ieee->state == RTLLIB_NOLINK)
2825                 rtllib_start_scan(ieee);
2826         spin_unlock_irqrestore(&ieee->lock, flags);
2827 }
2828
2829 static void rtllib_link_change_wq(void *data)
2830 {
2831         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2832                                      struct rtllib_device, link_change_wq);
2833         ieee->link_change(ieee->dev);
2834 }
2835 /* called only in userspace context */
2836 void rtllib_disassociate(struct rtllib_device *ieee)
2837 {
2838         netif_carrier_off(ieee->dev);
2839         if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2840                         rtllib_reset_queue(ieee);
2841
2842         if (ieee->data_hard_stop)
2843                         ieee->data_hard_stop(ieee->dev);
2844         if (IS_DOT11D_ENABLE(ieee))
2845                 Dot11d_Reset(ieee);
2846         ieee->state = RTLLIB_NOLINK;
2847         ieee->is_set_key = false;
2848         ieee->wap_set = 0;
2849
2850         queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0);
2851
2852         notify_wx_assoc_event(ieee);
2853 }
2854
2855 static void rtllib_associate_retry_wq(void *data)
2856 {
2857         struct rtllib_device *ieee = container_of_dwork_rsl(data,
2858                                      struct rtllib_device, associate_retry_wq);
2859         unsigned long flags;
2860
2861         down(&ieee->wx_sem);
2862         if (!ieee->proto_started)
2863                 goto exit;
2864
2865         if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2866                 goto exit;
2867
2868         /* until we do not set the state to RTLLIB_NOLINK
2869         * there are no possibility to have someone else trying
2870         * to start an association procedure (we get here with
2871         * ieee->state = RTLLIB_ASSOCIATING).
2872         * When we set the state to RTLLIB_NOLINK it is possible
2873         * that the RX path run an attempt to associate, but
2874         * both rtllib_softmac_check_all_nets and the
2875         * RX path works with ieee->lock held so there are no
2876         * problems. If we are still disassociated then start a scan.
2877         * the lock here is necessary to ensure no one try to start
2878         * an association procedure when we have just checked the
2879         * state and we are going to start the scan.
2880         */
2881         ieee->beinretry = true;
2882         ieee->state = RTLLIB_NOLINK;
2883
2884         rtllib_softmac_check_all_nets(ieee);
2885
2886         spin_lock_irqsave(&ieee->lock, flags);
2887
2888         if (ieee->state == RTLLIB_NOLINK)
2889                 rtllib_start_scan(ieee);
2890         spin_unlock_irqrestore(&ieee->lock, flags);
2891
2892         ieee->beinretry = false;
2893 exit:
2894         up(&ieee->wx_sem);
2895 }
2896
2897 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2898 {
2899         u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2900
2901         struct sk_buff *skb;
2902         struct rtllib_probe_response *b;
2903         skb = rtllib_probe_resp(ieee, broadcast_addr);
2904
2905         if (!skb)
2906                 return NULL;
2907
2908         b = (struct rtllib_probe_response *) skb->data;
2909         b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2910
2911         return skb;
2912
2913 }
2914
2915 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2916 {
2917         struct sk_buff *skb;
2918         struct rtllib_probe_response *b;
2919
2920         skb = rtllib_get_beacon_(ieee);
2921         if (!skb)
2922                 return NULL;
2923
2924         b = (struct rtllib_probe_response *) skb->data;
2925         b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2926
2927         if (ieee->seq_ctrl[0] == 0xFFF)
2928                 ieee->seq_ctrl[0] = 0;
2929         else
2930                 ieee->seq_ctrl[0]++;
2931
2932         return skb;
2933 }
2934 EXPORT_SYMBOL(rtllib_get_beacon);
2935
2936 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2937                                   u8 shutdown)
2938 {
2939         rtllib_stop_scan_syncro(ieee);
2940         down(&ieee->wx_sem);
2941         rtllib_stop_protocol(ieee, shutdown);
2942         up(&ieee->wx_sem);
2943 }
2944 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2945
2946
2947 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2948 {
2949         if (!ieee->proto_started)
2950                 return;
2951
2952         if (shutdown) {
2953                 ieee->proto_started = 0;
2954                 ieee->proto_stoppping = 1;
2955                 if (ieee->rtllib_ips_leave != NULL)
2956                         ieee->rtllib_ips_leave(ieee->dev);
2957         }
2958
2959         rtllib_stop_send_beacons(ieee);
2960         del_timer_sync(&ieee->associate_timer);
2961         cancel_delayed_work(&ieee->associate_retry_wq);
2962         cancel_delayed_work(&ieee->start_ibss_wq);
2963         cancel_delayed_work(&ieee->link_change_wq);
2964         rtllib_stop_scan(ieee);
2965
2966         if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2967                 ieee->state = RTLLIB_NOLINK;
2968
2969         if (ieee->state == RTLLIB_LINKED) {
2970                 if (ieee->iw_mode == IW_MODE_INFRA)
2971                         SendDisassociation(ieee, 1, deauth_lv_ss);
2972                 rtllib_disassociate(ieee);
2973         }
2974
2975         if (shutdown) {
2976                 RemoveAllTS(ieee);
2977                 ieee->proto_stoppping = 0;
2978         }
2979         kfree(ieee->assocreq_ies);
2980         ieee->assocreq_ies = NULL;
2981         ieee->assocreq_ies_len = 0;
2982         kfree(ieee->assocresp_ies);
2983         ieee->assocresp_ies = NULL;
2984         ieee->assocresp_ies_len = 0;
2985 }
2986
2987 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2988 {
2989         down(&ieee->wx_sem);
2990         rtllib_start_protocol(ieee);
2991         up(&ieee->wx_sem);
2992 }
2993 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
2994
2995 void rtllib_start_protocol(struct rtllib_device *ieee)
2996 {
2997         short ch = 0;
2998         int i = 0;
2999
3000         rtllib_update_active_chan_map(ieee);
3001
3002         if (ieee->proto_started)
3003                 return;
3004
3005         ieee->proto_started = 1;
3006
3007         if (ieee->current_network.channel == 0) {
3008                 do {
3009                         ch++;
3010                         if (ch > MAX_CHANNEL_NUMBER)
3011                                 return; /* no channel found */
3012                 } while (!ieee->active_channel_map[ch]);
3013                 ieee->current_network.channel = ch;
3014         }
3015
3016         if (ieee->current_network.beacon_interval == 0)
3017                 ieee->current_network.beacon_interval = 100;
3018
3019         for (i = 0; i < 17; i++) {
3020                 ieee->last_rxseq_num[i] = -1;
3021                 ieee->last_rxfrag_num[i] = -1;
3022                 ieee->last_packet_time[i] = 0;
3023         }
3024
3025         if (ieee->UpdateBeaconInterruptHandler)
3026                 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
3027
3028         ieee->wmm_acm = 0;
3029         /* if the user set the MAC of the ad-hoc cell and then
3030          * switch to managed mode, shall we  make sure that association
3031          * attempts does not fail just because the user provide the essid
3032          * and the nic is still checking for the AP MAC ??
3033          */
3034         if (ieee->iw_mode == IW_MODE_INFRA) {
3035                 rtllib_start_bss(ieee);
3036         } else if (ieee->iw_mode == IW_MODE_ADHOC) {
3037                 if (ieee->UpdateBeaconInterruptHandler)
3038                         ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
3039
3040                 rtllib_start_ibss(ieee);
3041
3042         } else if (ieee->iw_mode == IW_MODE_MASTER) {
3043                 rtllib_start_master_bss(ieee);
3044         } else if (ieee->iw_mode == IW_MODE_MONITOR) {
3045                 rtllib_start_monitor_mode(ieee);
3046         }
3047 }
3048
3049 void rtllib_softmac_init(struct rtllib_device *ieee)
3050 {
3051         int i;
3052         memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
3053
3054         ieee->state = RTLLIB_NOLINK;
3055         for (i = 0; i < 5; i++)
3056                 ieee->seq_ctrl[i] = 0;
3057         ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
3058         if (!ieee->pDot11dInfo)
3059                 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for DOT11D\n");
3060         ieee->LinkDetectInfo.SlotIndex = 0;
3061         ieee->LinkDetectInfo.SlotNum = 2;
3062         ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
3063         ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
3064         ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
3065         ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
3066         ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
3067         ieee->bIsAggregateFrame = false;
3068         ieee->assoc_id = 0;
3069         ieee->queue_stop = 0;
3070         ieee->scanning_continue = 0;
3071         ieee->softmac_features = 0;
3072         ieee->wap_set = 0;
3073         ieee->ssid_set = 0;
3074         ieee->proto_started = 0;
3075         ieee->proto_stoppping = 0;
3076         ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
3077         ieee->rate = 22;
3078         ieee->ps = RTLLIB_PS_DISABLED;
3079         ieee->sta_sleep = LPS_IS_WAKE;
3080
3081         ieee->Regdot11HTOperationalRateSet[0] = 0xff;
3082         ieee->Regdot11HTOperationalRateSet[1] = 0xff;
3083         ieee->Regdot11HTOperationalRateSet[4] = 0x01;
3084
3085         ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3086         ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3087         ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3088
3089         ieee->FirstIe_InScan = false;
3090         ieee->actscanning = false;
3091         ieee->beinretry = false;
3092         ieee->is_set_key = false;
3093         init_mgmt_queue(ieee);
3094
3095         ieee->sta_edca_param[0] = 0x0000A403;
3096         ieee->sta_edca_param[1] = 0x0000A427;
3097         ieee->sta_edca_param[2] = 0x005E4342;
3098         ieee->sta_edca_param[3] = 0x002F3262;
3099         ieee->aggregation = true;
3100         ieee->enable_rx_imm_BA = 1;
3101         ieee->tx_pending.txb = NULL;
3102
3103         _setup_timer(&ieee->associate_timer,
3104                     rtllib_associate_abort_cb,
3105                     (unsigned long) ieee);
3106
3107         _setup_timer(&ieee->beacon_timer,
3108                     rtllib_send_beacon_cb,
3109                     (unsigned long) ieee);
3110
3111
3112         ieee->wq = create_workqueue(DRV_NAME);
3113
3114         INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3115                               (void *)rtllib_link_change_wq, ieee);
3116         INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3117                               (void *)rtllib_start_ibss_wq, ieee);
3118         INIT_WORK_RSL(&ieee->associate_complete_wq,
3119                       (void *)rtllib_associate_complete_wq, ieee);
3120         INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3121                               (void *)rtllib_associate_procedure_wq, ieee);
3122         INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3123                               (void *)rtllib_softmac_scan_wq, ieee);
3124         INIT_DELAYED_WORK_RSL(&ieee->softmac_hint11d_wq,
3125                               (void *)rtllib_softmac_hint11d_wq, ieee);
3126         INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3127                               (void *)rtllib_associate_retry_wq, ieee);
3128         INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3129                       ieee);
3130
3131         sema_init(&ieee->wx_sem, 1);
3132         sema_init(&ieee->scan_sem, 1);
3133         sema_init(&ieee->ips_sem, 1);
3134
3135         spin_lock_init(&ieee->mgmt_tx_lock);
3136         spin_lock_init(&ieee->beacon_lock);
3137
3138         tasklet_init(&ieee->ps_task,
3139              (void(*)(unsigned long)) rtllib_sta_ps,
3140              (unsigned long)ieee);
3141
3142 }
3143
3144 void rtllib_softmac_free(struct rtllib_device *ieee)
3145 {
3146         down(&ieee->wx_sem);
3147         kfree(ieee->pDot11dInfo);
3148         ieee->pDot11dInfo = NULL;
3149         del_timer_sync(&ieee->associate_timer);
3150
3151         cancel_delayed_work(&ieee->associate_retry_wq);
3152         destroy_workqueue(ieee->wq);
3153         up(&ieee->wx_sem);
3154 }
3155
3156 /********************************************************
3157  * Start of WPA code.                                   *
3158  * this is stolen from the ipw2200 driver               *
3159  ********************************************************/
3160
3161
3162 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3163 {
3164         /* This is called when wpa_supplicant loads and closes the driver
3165          * interface. */
3166         printk(KERN_INFO "%s WPA\n", value ? "enabling" : "disabling");
3167         ieee->wpa_enabled = value;
3168         memset(ieee->ap_mac_addr, 0, 6);
3169         return 0;
3170 }
3171
3172
3173 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3174                                    int wpa_ie_len)
3175 {
3176         /* make sure WPA is enabled */
3177         rtllib_wpa_enable(ieee, 1);
3178
3179         rtllib_disassociate(ieee);
3180 }
3181
3182
3183 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3184 {
3185
3186         int ret = 0;
3187
3188         switch (command) {
3189         case IEEE_MLME_STA_DEAUTH:
3190                 break;
3191
3192         case IEEE_MLME_STA_DISASSOC:
3193                 rtllib_disassociate(ieee);
3194                 break;
3195
3196         default:
3197                 printk(KERN_INFO "Unknown MLME request: %d\n", command);
3198                 ret = -EOPNOTSUPP;
3199         }
3200
3201         return ret;
3202 }
3203
3204
3205 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3206                               struct ieee_param *param, int plen)
3207 {
3208         u8 *buf;
3209
3210         if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3211             (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3212                 return -EINVAL;
3213
3214         if (param->u.wpa_ie.len) {
3215                 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
3216                               GFP_KERNEL);
3217                 if (buf == NULL)
3218                         return -ENOMEM;
3219
3220                 kfree(ieee->wpa_ie);
3221                 ieee->wpa_ie = buf;
3222                 ieee->wpa_ie_len = param->u.wpa_ie.len;
3223         } else {
3224                 kfree(ieee->wpa_ie);
3225                 ieee->wpa_ie = NULL;
3226                 ieee->wpa_ie_len = 0;
3227         }
3228
3229         rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3230         return 0;
3231 }
3232
3233 #define AUTH_ALG_OPEN_SYSTEM                    0x1
3234 #define AUTH_ALG_SHARED_KEY                     0x2
3235 #define AUTH_ALG_LEAP                           0x4
3236 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3237 {
3238
3239         struct rtllib_security sec = {
3240                 .flags = SEC_AUTH_MODE,
3241         };
3242         int ret = 0;
3243
3244         if (value & AUTH_ALG_SHARED_KEY) {
3245                 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3246                 ieee->open_wep = 0;
3247                 ieee->auth_mode = 1;
3248         } else if (value & AUTH_ALG_OPEN_SYSTEM) {
3249                 sec.auth_mode = WLAN_AUTH_OPEN;
3250                 ieee->open_wep = 1;
3251                 ieee->auth_mode = 0;
3252         } else if (value & AUTH_ALG_LEAP) {
3253                 sec.auth_mode = WLAN_AUTH_LEAP  >> 6;
3254                 ieee->open_wep = 1;
3255                 ieee->auth_mode = 2;
3256         }
3257
3258
3259         if (ieee->set_security)
3260                 ieee->set_security(ieee->dev, &sec);
3261
3262         return ret;
3263 }
3264
3265 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3266 {
3267         int ret = 0;
3268         unsigned long flags;
3269
3270         switch (name) {
3271         case IEEE_PARAM_WPA_ENABLED:
3272                 ret = rtllib_wpa_enable(ieee, value);
3273                 break;
3274
3275         case IEEE_PARAM_TKIP_COUNTERMEASURES:
3276                 ieee->tkip_countermeasures = value;
3277                 break;
3278
3279         case IEEE_PARAM_DROP_UNENCRYPTED:
3280         {
3281                 /* HACK:
3282                  *
3283                  * wpa_supplicant calls set_wpa_enabled when the driver
3284                  * is loaded and unloaded, regardless of if WPA is being
3285                  * used.  No other calls are made which can be used to
3286                  * determine if encryption will be used or not prior to
3287                  * association being expected.  If encryption is not being
3288                  * used, drop_unencrypted is set to false, else true -- we
3289                  * can use this to determine if the CAP_PRIVACY_ON bit should
3290                  * be set.
3291                  */
3292                 struct rtllib_security sec = {
3293                         .flags = SEC_ENABLED,
3294                         .enabled = value,
3295                 };
3296                 ieee->drop_unencrypted = value;
3297                 /* We only change SEC_LEVEL for open mode. Others
3298                  * are set by ipw_wpa_set_encryption.
3299                  */
3300                 if (!value) {
3301                         sec.flags |= SEC_LEVEL;
3302                         sec.level = SEC_LEVEL_0;
3303                 } else {
3304                         sec.flags |= SEC_LEVEL;
3305                         sec.level = SEC_LEVEL_1;
3306                 }
3307                 if (ieee->set_security)
3308                         ieee->set_security(ieee->dev, &sec);
3309                 break;
3310         }
3311
3312         case IEEE_PARAM_PRIVACY_INVOKED:
3313                 ieee->privacy_invoked = value;
3314                 break;
3315
3316         case IEEE_PARAM_AUTH_ALGS:
3317                 ret = rtllib_wpa_set_auth_algs(ieee, value);
3318                 break;
3319
3320         case IEEE_PARAM_IEEE_802_1X:
3321                 ieee->ieee802_1x = value;
3322                 break;
3323         case IEEE_PARAM_WPAX_SELECT:
3324                 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3325                 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3326                 break;
3327
3328         default:
3329                 printk(KERN_INFO "Unknown WPA param: %d\n", name);
3330                 ret = -EOPNOTSUPP;
3331         }
3332
3333         return ret;
3334 }
3335
3336 /* implementation borrowed from hostap driver */
3337 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3338                                   struct ieee_param *param, int param_len,
3339                                   u8 is_mesh)
3340 {
3341         int ret = 0;
3342         struct lib80211_crypto_ops *ops;
3343         struct lib80211_crypt_data **crypt;
3344
3345         struct rtllib_security sec = {
3346                 .flags = 0,
3347         };
3348
3349         param->u.crypt.err = 0;
3350         param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3351
3352         if (param_len !=
3353             (int) ((char *) param->u.crypt.key - (char *) param) +
3354             param->u.crypt.key_len) {
3355                 printk(KERN_INFO "Len mismatch %d, %d\n", param_len,
3356                                param->u.crypt.key_len);
3357                 return -EINVAL;
3358         }
3359         if (is_broadcast_ether_addr(param->sta_addr)) {
3360                 if (param->u.crypt.idx >= NUM_WEP_KEYS)
3361                         return -EINVAL;
3362                 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
3363         } else {
3364                 return -EINVAL;
3365         }
3366
3367         if (strcmp(param->u.crypt.alg, "none") == 0) {
3368                 if (crypt) {
3369                         sec.enabled = 0;
3370                         sec.level = SEC_LEVEL_0;
3371                         sec.flags |= SEC_ENABLED | SEC_LEVEL;
3372                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3373                 }
3374                 goto done;
3375         }
3376         sec.enabled = 1;
3377         sec.flags |= SEC_ENABLED;
3378
3379         /* IPW HW cannot build TKIP MIC, host decryption still needed. */
3380         if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3381             strcmp(param->u.crypt.alg, "R-TKIP"))
3382                 goto skip_host_crypt;
3383
3384         ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3385         if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3386                 request_module("rtllib_crypt_wep");
3387                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3388         } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3389                 request_module("rtllib_crypt_tkip");
3390                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3391         } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3392                 request_module("rtllib_crypt_ccmp");
3393                 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3394         }
3395         if (ops == NULL) {
3396                 printk(KERN_INFO "unknown crypto alg '%s'\n",
3397                        param->u.crypt.alg);
3398                 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3399                 ret = -EINVAL;
3400                 goto done;
3401         }
3402         if (*crypt == NULL || (*crypt)->ops != ops) {
3403                 struct lib80211_crypt_data *new_crypt;
3404
3405                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3406
3407                 new_crypt = kmalloc(sizeof(*new_crypt), GFP_KERNEL);
3408                 if (new_crypt == NULL) {
3409                         ret = -ENOMEM;
3410                         goto done;
3411                 }
3412                 memset(new_crypt, 0, sizeof(struct lib80211_crypt_data));
3413                 new_crypt->ops = ops;
3414                 if (new_crypt->ops)
3415                         new_crypt->priv =
3416                                 new_crypt->ops->init(param->u.crypt.idx);
3417
3418                 if (new_crypt->priv == NULL) {
3419                         kfree(new_crypt);
3420                         param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3421                         ret = -EINVAL;
3422                         goto done;
3423                 }
3424
3425                 *crypt = new_crypt;
3426         }
3427
3428         if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3429             (*crypt)->ops->set_key(param->u.crypt.key,
3430             param->u.crypt.key_len, param->u.crypt.seq,
3431             (*crypt)->priv) < 0) {
3432                 printk(KERN_INFO "key setting failed\n");
3433                 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3434                 ret = -EINVAL;
3435                 goto done;
3436         }
3437
3438  skip_host_crypt:
3439         if (param->u.crypt.set_tx) {
3440                 ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
3441                 sec.active_key = param->u.crypt.idx;
3442                 sec.flags |= SEC_ACTIVE_KEY;
3443         } else
3444                 sec.flags &= ~SEC_ACTIVE_KEY;
3445
3446         if (param->u.crypt.alg != NULL) {
3447                 memcpy(sec.keys[param->u.crypt.idx],
3448                        param->u.crypt.key,
3449                        param->u.crypt.key_len);
3450                 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3451                 sec.flags |= (1 << param->u.crypt.idx);
3452
3453                 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3454                         sec.flags |= SEC_LEVEL;
3455                         sec.level = SEC_LEVEL_1;
3456                 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3457                         sec.flags |= SEC_LEVEL;
3458                         sec.level = SEC_LEVEL_2;
3459                 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3460                         sec.flags |= SEC_LEVEL;
3461                         sec.level = SEC_LEVEL_3;
3462                 }
3463         }
3464  done:
3465         if (ieee->set_security)
3466                 ieee->set_security(ieee->dev, &sec);
3467
3468         /* Do not reset port if card is in Managed mode since resetting will
3469          * generate new IEEE 802.11 authentication which may end up in looping
3470          * with IEEE 802.1X.  If your hardware requires a reset after WEP
3471          * configuration (for example... Prism2), implement the reset_port in
3472          * the callbacks structures used to initialize the 802.11 stack. */
3473         if (ieee->reset_on_keychange &&
3474             ieee->iw_mode != IW_MODE_INFRA &&
3475             ieee->reset_port &&
3476             ieee->reset_port(ieee->dev)) {
3477                 printk(KERN_INFO "reset_port failed\n");
3478                 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3479                 return -EINVAL;
3480         }
3481
3482         return ret;
3483 }
3484
3485 inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon,
3486                 struct rtllib_device *ieee, u16 asRsn)
3487 {
3488         struct sk_buff *skb;
3489         struct rtllib_disauth *disauth;
3490         int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3491
3492         skb = dev_alloc_skb(len);
3493         if (!skb)
3494                 return NULL;
3495
3496         skb_reserve(skb, ieee->tx_headroom);
3497
3498         disauth = (struct rtllib_disauth *) skb_put(skb,
3499                   sizeof(struct rtllib_disauth));
3500         disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3501         disauth->header.duration_id = 0;
3502
3503         memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN);
3504         memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3505         memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN);
3506
3507         disauth->reason = cpu_to_le16(asRsn);
3508         return skb;
3509 }
3510
3511 inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon,
3512                 struct rtllib_device *ieee, u16 asRsn)
3513 {
3514         struct sk_buff *skb;
3515         struct rtllib_disassoc *disass;
3516         int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3517         skb = dev_alloc_skb(len);
3518
3519         if (!skb)
3520                 return NULL;
3521
3522         skb_reserve(skb, ieee->tx_headroom);
3523
3524         disass = (struct rtllib_disassoc *) skb_put(skb,
3525                                          sizeof(struct rtllib_disassoc));
3526         disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3527         disass->header.duration_id = 0;
3528
3529         memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
3530         memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3531         memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);
3532
3533         disass->reason = cpu_to_le16(asRsn);
3534         return skb;
3535 }
3536
3537 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3538 {
3539         struct rtllib_network *beacon = &ieee->current_network;
3540         struct sk_buff *skb;
3541
3542         if (deauth)
3543                 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3544         else
3545                 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3546
3547         if (skb)
3548                 softmac_mgmt_xmit(skb, ieee);
3549 }
3550
3551 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3552 {
3553         static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3554         static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3555         int wpa_ie_len = ieee->wpa_ie_len;
3556         struct lib80211_crypt_data *crypt;
3557         int encrypt;
3558
3559         crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3560         encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3561                   || (ieee->host_encrypt && crypt && crypt->ops &&
3562                   (0 == strcmp(crypt->ops->name, "R-WEP")));
3563
3564         /* simply judge  */
3565         if (encrypt && (wpa_ie_len == 0)) {
3566                 return SEC_ALG_WEP;
3567         } else if ((wpa_ie_len != 0)) {
3568                 if (((ieee->wpa_ie[0] == 0xdd) &&
3569                     (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3570                     ((ieee->wpa_ie[0] == 0x30) &&
3571                     (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3572                         return SEC_ALG_CCMP;
3573                 else
3574                         return SEC_ALG_TKIP;
3575         } else {
3576                 return SEC_ALG_NONE;
3577         }
3578 }
3579
3580 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3581                                 u8 is_mesh)
3582 {
3583         struct ieee_param *param;
3584         int ret = 0;
3585
3586         down(&ieee->wx_sem);
3587
3588         if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3589                 ret = -EINVAL;
3590                 goto out;
3591         }
3592
3593         param = kmalloc(p->length, GFP_KERNEL);
3594         if (param == NULL) {
3595                 ret = -ENOMEM;
3596                 goto out;
3597         }
3598         if (copy_from_user(param, p->pointer, p->length)) {
3599                 kfree(param);
3600                 ret = -EFAULT;
3601                 goto out;
3602         }
3603
3604         switch (param->cmd) {
3605         case IEEE_CMD_SET_WPA_PARAM:
3606                 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3607                                         param->u.wpa_param.value);
3608                 break;
3609
3610         case IEEE_CMD_SET_WPA_IE:
3611                 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3612                 break;
3613
3614         case IEEE_CMD_SET_ENCRYPTION:
3615                 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3616                 break;
3617
3618         case IEEE_CMD_MLME:
3619                 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3620                                    param->u.mlme.reason_code);
3621                 break;
3622
3623         default:
3624                 printk(KERN_INFO "Unknown WPA supplicant request: %d\n",
3625                        param->cmd);
3626                 ret = -EOPNOTSUPP;
3627                 break;
3628         }
3629
3630         if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3631                 ret = -EFAULT;
3632
3633         kfree(param);
3634 out:
3635         up(&ieee->wx_sem);
3636
3637         return ret;
3638 }
3639 EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
3640
3641 void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3642 {
3643         u8      OpMode;
3644         u8      i;
3645         bool    bFilterOutNonAssociatedBSSID = false;
3646
3647         rtllib->state = RTLLIB_NOLINK;
3648
3649         for (i = 0; i < 6; i++)
3650                 rtllib->current_network.bssid[i] = 0x55;
3651
3652         rtllib->OpMode = RT_OP_MODE_NO_LINK;
3653         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3654                                 rtllib->current_network.bssid);
3655         OpMode = RT_OP_MODE_NO_LINK;
3656         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3657         rtllib_stop_send_beacons(rtllib);
3658
3659         bFilterOutNonAssociatedBSSID = false;
3660         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3661                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3662         notify_wx_assoc_event(rtllib);
3663
3664 }
3665
3666 void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta,
3667                                     u8 asRsn)
3668 {
3669         u8 i;
3670         u8      OpMode;
3671
3672         RemovePeerTS(rtllib, asSta);
3673
3674         if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) {
3675                 rtllib->state = RTLLIB_NOLINK;
3676
3677                 for (i = 0; i < 6; i++)
3678                         rtllib->current_network.bssid[i] = 0x22;
3679                 OpMode = RT_OP_MODE_NO_LINK;
3680                 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3681                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3682                                         (u8 *)(&OpMode));
3683                 rtllib_disassociate(rtllib);
3684
3685                 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3686                                         rtllib->current_network.bssid);
3687
3688         }
3689
3690 }
3691
3692 void
3693 rtllib_MgntDisconnectAP(
3694         struct rtllib_device *rtllib,
3695         u8 asRsn
3696 )
3697 {
3698         bool bFilterOutNonAssociatedBSSID = false;
3699
3700         bFilterOutNonAssociatedBSSID = false;
3701         rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3702                                 (u8 *)(&bFilterOutNonAssociatedBSSID));
3703         rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3704                                        asRsn);
3705
3706         rtllib->state = RTLLIB_NOLINK;
3707 }
3708
3709 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3710 {
3711         if (rtllib->ps != RTLLIB_PS_DISABLED)
3712                 rtllib->sta_wake_up(rtllib->dev);
3713
3714         if (rtllib->state == RTLLIB_LINKED) {
3715                 if (rtllib->iw_mode == IW_MODE_ADHOC)
3716                         rtllib_MgntDisconnectIBSS(rtllib);
3717                 if (rtllib->iw_mode == IW_MODE_INFRA)
3718                         rtllib_MgntDisconnectAP(rtllib, asRsn);
3719
3720         }
3721
3722         return true;
3723 }
3724 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3725
3726 void notify_wx_assoc_event(struct rtllib_device *ieee)
3727 {
3728         union iwreq_data wrqu;
3729
3730         if (ieee->cannot_notify)
3731                 return;
3732
3733         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3734         if (ieee->state == RTLLIB_LINKED)
3735                 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3736                        ETH_ALEN);
3737         else {
3738
3739                 printk(KERN_INFO "%s(): Tell user space disconnected\n",
3740                        __func__);
3741                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
3742         }
3743         wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3744 }
3745 EXPORT_SYMBOL(notify_wx_assoc_event);