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