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