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 26static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl); 27 28 29static 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 */ 38static 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 */ 56static 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 75static 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 97static 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 113static 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 131static 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 148static void init_mgmt_queue(struct rtllib_device *ieee) 149{ 150 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0; 151} 152 153 154u8 155MgntQuery_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 181static 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 203inline 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 279inline 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 334static inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee) 335{ 336 unsigned int len, rate_len; 337 u8 *tag; 338 struct sk_buff *skb; 339 struct rtllib_probe_request *req; 340 341 len = ieee->current_network.ssid_len; 342 343 rate_len = rtllib_MFIE_rate_len(ieee); 344 345 skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) + 346 2 + len + rate_len + ieee->tx_headroom); 347 348 if (!skb) 349 return NULL; 350 351 skb_reserve(skb, ieee->tx_headroom); 352 353 req = (struct rtllib_probe_request *) skb_put(skb, 354 sizeof(struct rtllib_probe_request)); 355 req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ); 356 req->header.duration_id = 0; 357 358 memset(req->header.addr1, 0xff, ETH_ALEN); 359 ether_addr_copy(req->header.addr2, ieee->dev->dev_addr); 360 memset(req->header.addr3, 0xff, ETH_ALEN); 361 362 tag = (u8 *) skb_put(skb, len + 2 + rate_len); 363 364 *tag++ = MFIE_TYPE_SSID; 365 *tag++ = len; 366 memcpy(tag, ieee->current_network.ssid, len); 367 tag += len; 368 369 rtllib_MFIE_Brate(ieee, &tag); 370 rtllib_MFIE_Grate(ieee, &tag); 371 372 return skb; 373} 374 375static struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee); 376 377static 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 396static 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. */ 408void 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 */ 422void 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 */ 439void 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} 454EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode); 455 456 457/* Disables the specialized promiscuous mode required by Intel. 458 * See MgntEnableIntelPromiscuousMode for detail. 459 */ 460void 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} 475EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode); 476 477static 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 489static 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 498static 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 */ 507static 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 } 561out: 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 577static void rtllib_softmac_scan_wq(void *data) 578{ 579 struct rtllib_device *ieee = container_of_dwork_rsl(data, 580 struct rtllib_device, softmac_scan_wq); 581 u8 last_channel = ieee->current_network.channel; 582 583 rtllib_update_active_chan_map(ieee); 584 585 if (!ieee->ieee_up) 586 return; 587 if (rtllib_act_scanning(ieee, true)) 588 return; 589 590 down(&ieee->scan_sem); 591 592 if (ieee->eRFPowerState == eRfOff) { 593 netdev_info(ieee->dev, 594 "======>%s():rf state is eRfOff, return\n", 595 __func__); 596 goto out1; 597 } 598 599 do { 600 ieee->current_network.channel = 601 (ieee->current_network.channel + 1) % 602 MAX_CHANNEL_NUMBER; 603 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) { 604 if (!ieee->active_channel_map[ieee->current_network.channel]) 605 ieee->current_network.channel = 6; 606 goto out; /* no good chans */ 607 } 608 } while (!ieee->active_channel_map[ieee->current_network.channel]); 609 610 if (ieee->scanning_continue == 0) 611 goto out; 612 613 ieee->set_chan(ieee->dev, ieee->current_network.channel); 614 615 if (ieee->active_channel_map[ieee->current_network.channel] == 1) 616 rtllib_send_probe_requests(ieee, 0); 617 618 queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq, 619 msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME)); 620 621 up(&ieee->scan_sem); 622 return; 623 624out: 625 if (IS_DOT11D_ENABLE(ieee)) 626 DOT11D_ScanComplete(ieee); 627 ieee->current_network.channel = last_channel; 628 629out1: 630 ieee->actscanning = false; 631 ieee->scan_watch_dog = 0; 632 ieee->scanning_continue = 0; 633 up(&ieee->scan_sem); 634} 635 636 637 638static 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 650static 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 664void 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} 671EXPORT_SYMBOL(rtllib_stop_send_beacons); 672 673 674void 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} 681EXPORT_SYMBOL(rtllib_start_send_beacons); 682 683 684static void rtllib_softmac_stop_scan(struct rtllib_device *ieee) 685{ 686 down(&ieee->scan_sem); 687 ieee->scan_watch_dog = 0; 688 if (ieee->scanning_continue == 1) { 689 ieee->scanning_continue = 0; 690 ieee->actscanning = false; 691 692 cancel_delayed_work(&ieee->softmac_scan_wq); 693 } 694 695 up(&ieee->scan_sem); 696} 697 698void 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} 707EXPORT_SYMBOL(rtllib_stop_scan); 708 709void 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} 718EXPORT_SYMBOL(rtllib_stop_scan_syncro); 719 720bool 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} 731EXPORT_SYMBOL(rtllib_act_scanning); 732 733/* called with ieee->lock held */ 734static void rtllib_start_scan(struct rtllib_device *ieee) 735{ 736 RT_TRACE(COMP_DBG, "===>%s()\n", __func__); 737 if (ieee->rtllib_ips_leave_wq != NULL) 738 ieee->rtllib_ips_leave_wq(ieee->dev); 739 740 if (IS_DOT11D_ENABLE(ieee)) { 741 if (IS_COUNTRY_IE_VALID(ieee)) 742 RESET_CIE_WATCHDOG(ieee); 743 } 744 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 745 if (ieee->scanning_continue == 0) { 746 ieee->actscanning = true; 747 ieee->scanning_continue = 1; 748 queue_delayed_work_rsl(ieee->wq, 749 &ieee->softmac_scan_wq, 0); 750 } 751 } else { 752 if (ieee->rtllib_start_hw_scan) 753 ieee->rtllib_start_hw_scan(ieee->dev); 754 } 755} 756 757/* called with wx_sem held */ 758void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh) 759{ 760 if (IS_DOT11D_ENABLE(ieee)) { 761 if (IS_COUNTRY_IE_VALID(ieee)) 762 RESET_CIE_WATCHDOG(ieee); 763 } 764 ieee->sync_scan_hurryup = 0; 765 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 766 rtllib_softmac_scan_syncro(ieee, is_mesh); 767 } else { 768 if (ieee->rtllib_start_hw_scan) 769 ieee->rtllib_start_hw_scan(ieee->dev); 770 } 771} 772EXPORT_SYMBOL(rtllib_start_scan_syncro); 773 774inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon, 775 struct rtllib_device *ieee, int challengelen, u8 *daddr) 776{ 777 struct sk_buff *skb; 778 struct rtllib_authentication *auth; 779 int len = 0; 780 781 len = sizeof(struct rtllib_authentication) + challengelen + 782 ieee->tx_headroom + 4; 783 skb = dev_alloc_skb(len); 784 785 if (!skb) 786 return NULL; 787 788 skb_reserve(skb, ieee->tx_headroom); 789 790 auth = (struct rtllib_authentication *) 791 skb_put(skb, sizeof(struct rtllib_authentication)); 792 793 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH); 794 if (challengelen) 795 auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP); 796 797 auth->header.duration_id = cpu_to_le16(0x013a); 798 ether_addr_copy(auth->header.addr1, beacon->bssid); 799 ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr); 800 ether_addr_copy(auth->header.addr3, beacon->bssid); 801 if (ieee->auth_mode == 0) 802 auth->algorithm = WLAN_AUTH_OPEN; 803 else if (ieee->auth_mode == 1) 804 auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY); 805 else if (ieee->auth_mode == 2) 806 auth->algorithm = WLAN_AUTH_OPEN; 807 auth->transaction = cpu_to_le16(ieee->associate_seq); 808 ieee->associate_seq++; 809 810 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS); 811 812 return skb; 813} 814 815static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, 816 const u8 *dest) 817{ 818 u8 *tag; 819 int beacon_size; 820 struct rtllib_probe_response *beacon_buf; 821 struct sk_buff *skb = NULL; 822 int encrypt; 823 int atim_len, erp_len; 824 struct lib80211_crypt_data *crypt; 825 826 char *ssid = ieee->current_network.ssid; 827 int ssid_len = ieee->current_network.ssid_len; 828 int rate_len = ieee->current_network.rates_len+2; 829 int rate_ex_len = ieee->current_network.rates_ex_len; 830 int wpa_ie_len = ieee->wpa_ie_len; 831 u8 erpinfo_content = 0; 832 833 u8 *tmp_ht_cap_buf = NULL; 834 u8 tmp_ht_cap_len = 0; 835 u8 *tmp_ht_info_buf = NULL; 836 u8 tmp_ht_info_len = 0; 837 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; 838 u8 *tmp_generic_ie_buf = NULL; 839 u8 tmp_generic_ie_len = 0; 840 841 if (rate_ex_len > 0) 842 rate_ex_len += 2; 843 844 if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS) 845 atim_len = 4; 846 else 847 atim_len = 0; 848 849 if ((ieee->current_network.mode == IEEE_G) || 850 (ieee->current_network.mode == IEEE_N_24G && 851 ieee->pHTInfo->bCurSuppCCK)) { 852 erp_len = 3; 853 erpinfo_content = 0; 854 if (ieee->current_network.buseprotection) 855 erpinfo_content |= ERP_UseProtection; 856 } else 857 erp_len = 0; 858 859 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 860 encrypt = ieee->host_encrypt && crypt && crypt->ops && 861 ((strcmp(crypt->ops->name, "R-WEP") == 0 || wpa_ie_len)); 862 if (ieee->pHTInfo->bCurrentHTSupport) { 863 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap); 864 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); 865 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo); 866 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo); 867 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf, 868 &tmp_ht_cap_len, encrypt, false); 869 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len, 870 encrypt); 871 872 if (pHTInfo->bRegRT2RTAggregation) { 873 tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; 874 tmp_generic_ie_len = 875 sizeof(ieee->pHTInfo->szRT2RTAggBuffer); 876 HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf, 877 &tmp_generic_ie_len); 878 } 879 } 880 881 beacon_size = sizeof(struct rtllib_probe_response)+2+ 882 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len 883 + wpa_ie_len + ieee->tx_headroom; 884 skb = dev_alloc_skb(beacon_size); 885 if (!skb) 886 return NULL; 887 888 skb_reserve(skb, ieee->tx_headroom); 889 890 beacon_buf = (struct rtllib_probe_response *) skb_put(skb, 891 (beacon_size - ieee->tx_headroom)); 892 ether_addr_copy(beacon_buf->header.addr1, dest); 893 ether_addr_copy(beacon_buf->header.addr2, ieee->dev->dev_addr); 894 ether_addr_copy(beacon_buf->header.addr3, ieee->current_network.bssid); 895 896 beacon_buf->header.duration_id = 0; 897 beacon_buf->beacon_interval = 898 cpu_to_le16(ieee->current_network.beacon_interval); 899 beacon_buf->capability = 900 cpu_to_le16(ieee->current_network.capability & 901 WLAN_CAPABILITY_IBSS); 902 beacon_buf->capability |= 903 cpu_to_le16(ieee->current_network.capability & 904 WLAN_CAPABILITY_SHORT_PREAMBLE); 905 906 if (ieee->short_slot && (ieee->current_network.capability & 907 WLAN_CAPABILITY_SHORT_SLOT_TIME)) 908 beacon_buf->capability |= 909 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); 910 911 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 912 if (encrypt) 913 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 914 915 916 beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP); 917 beacon_buf->info_element[0].id = MFIE_TYPE_SSID; 918 beacon_buf->info_element[0].len = ssid_len; 919 920 tag = (u8 *) beacon_buf->info_element[0].data; 921 922 memcpy(tag, ssid, ssid_len); 923 924 tag += ssid_len; 925 926 *(tag++) = MFIE_TYPE_RATES; 927 *(tag++) = rate_len-2; 928 memcpy(tag, ieee->current_network.rates, rate_len-2); 929 tag += rate_len-2; 930 931 *(tag++) = MFIE_TYPE_DS_SET; 932 *(tag++) = 1; 933 *(tag++) = ieee->current_network.channel; 934 935 if (atim_len) { 936 u16 val16; 937 *(tag++) = MFIE_TYPE_IBSS_SET; 938 *(tag++) = 2; 939 val16 = ieee->current_network.atim_window; 940 memcpy((u8 *)tag, (u8 *)&val16, 2); 941 tag += 2; 942 } 943 944 if (erp_len) { 945 *(tag++) = MFIE_TYPE_ERP; 946 *(tag++) = 1; 947 *(tag++) = erpinfo_content; 948 } 949 if (rate_ex_len) { 950 *(tag++) = MFIE_TYPE_RATES_EX; 951 *(tag++) = rate_ex_len-2; 952 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2); 953 tag += rate_ex_len-2; 954 } 955 956 if (wpa_ie_len) { 957 if (ieee->iw_mode == IW_MODE_ADHOC) 958 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4); 959 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len); 960 tag += ieee->wpa_ie_len; 961 } 962 return skb; 963} 964 965static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest) 966{ 967 struct sk_buff *skb; 968 u8 *tag; 969 970 struct lib80211_crypt_data *crypt; 971 struct rtllib_assoc_response_frame *assoc; 972 short encrypt; 973 974 unsigned int rate_len = rtllib_MFIE_rate_len(ieee); 975 int len = sizeof(struct rtllib_assoc_response_frame) + rate_len + 976 ieee->tx_headroom; 977 978 skb = dev_alloc_skb(len); 979 980 if (!skb) 981 return NULL; 982 983 skb_reserve(skb, ieee->tx_headroom); 984 985 assoc = (struct rtllib_assoc_response_frame *) 986 skb_put(skb, sizeof(struct rtllib_assoc_response_frame)); 987 988 assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP); 989 ether_addr_copy(assoc->header.addr1, dest); 990 ether_addr_copy(assoc->header.addr3, ieee->dev->dev_addr); 991 ether_addr_copy(assoc->header.addr2, ieee->dev->dev_addr); 992 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ? 993 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS); 994 995 996 if (ieee->short_slot) 997 assoc->capability |= 998 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); 999 1000 if (ieee->host_encrypt) 1001 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 1002 else 1003 crypt = NULL; 1004 1005 encrypt = (crypt && crypt->ops); 1006 1007 if (encrypt) 1008 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 1009 1010 assoc->status = 0; 1011 assoc->aid = cpu_to_le16(ieee->assoc_id); 1012 if (ieee->assoc_id == 0x2007) 1013 ieee->assoc_id = 0; 1014 else 1015 ieee->assoc_id++; 1016 1017 tag = (u8 *) skb_put(skb, rate_len); 1018 rtllib_MFIE_Brate(ieee, &tag); 1019 rtllib_MFIE_Grate(ieee, &tag); 1020 1021 return skb; 1022} 1023 1024static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status, 1025 u8 *dest) 1026{ 1027 struct sk_buff *skb = NULL; 1028 struct rtllib_authentication *auth; 1029 int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1; 1030 1031 skb = dev_alloc_skb(len); 1032 if (!skb) 1033 return NULL; 1034 1035 skb->len = sizeof(struct rtllib_authentication); 1036 1037 skb_reserve(skb, ieee->tx_headroom); 1038 1039 auth = (struct rtllib_authentication *) 1040 skb_put(skb, sizeof(struct rtllib_authentication)); 1041 1042 auth->status = cpu_to_le16(status); 1043 auth->transaction = cpu_to_le16(2); 1044 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN); 1045 1046 ether_addr_copy(auth->header.addr3, ieee->dev->dev_addr); 1047 ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr); 1048 ether_addr_copy(auth->header.addr1, dest); 1049 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH); 1050 return skb; 1051 1052 1053} 1054 1055static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr) 1056{ 1057 struct sk_buff *skb; 1058 struct rtllib_hdr_3addr *hdr; 1059 1060 skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom); 1061 if (!skb) 1062 return NULL; 1063 1064 skb_reserve(skb, ieee->tx_headroom); 1065 1066 hdr = (struct rtllib_hdr_3addr *)skb_put(skb, 1067 sizeof(struct rtllib_hdr_3addr)); 1068 1069 ether_addr_copy(hdr->addr1, ieee->current_network.bssid); 1070 ether_addr_copy(hdr->addr2, ieee->dev->dev_addr); 1071 ether_addr_copy(hdr->addr3, ieee->current_network.bssid); 1072 1073 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA | 1074 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS | 1075 (pwr ? RTLLIB_FCTL_PM : 0)); 1076 1077 return skb; 1078 1079 1080} 1081 1082static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee) 1083{ 1084 struct sk_buff *skb; 1085 struct rtllib_pspoll_hdr *hdr; 1086 1087 skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom); 1088 if (!skb) 1089 return NULL; 1090 1091 skb_reserve(skb, ieee->tx_headroom); 1092 1093 hdr = (struct rtllib_pspoll_hdr *)skb_put(skb, 1094 sizeof(struct rtllib_pspoll_hdr)); 1095 1096 ether_addr_copy(hdr->bssid, ieee->current_network.bssid); 1097 ether_addr_copy(hdr->ta, ieee->dev->dev_addr); 1098 1099 hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000); 1100 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL | 1101 RTLLIB_FCTL_PM); 1102 1103 return skb; 1104 1105} 1106 1107static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest) 1108{ 1109 struct sk_buff *buf = rtllib_assoc_resp(ieee, dest); 1110 1111 if (buf) 1112 softmac_mgmt_xmit(buf, ieee); 1113} 1114 1115 1116static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest) 1117{ 1118 struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest); 1119 1120 if (buf) 1121 softmac_mgmt_xmit(buf, ieee); 1122} 1123 1124 1125static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest) 1126{ 1127 struct sk_buff *buf = rtllib_probe_resp(ieee, dest); 1128 1129 if (buf) 1130 softmac_mgmt_xmit(buf, ieee); 1131} 1132 1133 1134inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid) 1135{ 1136 int i = 0; 1137 1138 do { 1139 if ((ieee->PMKIDList[i].bUsed) && 1140 (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0)) 1141 break; 1142 i++; 1143 } while (i < NUM_PMKID_CACHE); 1144 1145 if (i == NUM_PMKID_CACHE) 1146 i = -1; 1147 return i; 1148} 1149 1150inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon, 1151 struct rtllib_device *ieee) 1152{ 1153 struct sk_buff *skb; 1154 struct rtllib_assoc_request_frame *hdr; 1155 u8 *tag, *ies; 1156 int i; 1157 u8 *ht_cap_buf = NULL; 1158 u8 ht_cap_len = 0; 1159 u8 *realtek_ie_buf = NULL; 1160 u8 realtek_ie_len = 0; 1161 int wpa_ie_len = ieee->wpa_ie_len; 1162 int wps_ie_len = ieee->wps_ie_len; 1163 unsigned int ckip_ie_len = 0; 1164 unsigned int ccxrm_ie_len = 0; 1165 unsigned int cxvernum_ie_len = 0; 1166 struct lib80211_crypt_data *crypt; 1167 int encrypt; 1168 int PMKCacheIdx; 1169 1170 unsigned int rate_len = (beacon->rates_len ? 1171 (beacon->rates_len + 2) : 0) + 1172 (beacon->rates_ex_len ? (beacon->rates_ex_len) + 1173 2 : 0); 1174 1175 unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0; 1176 unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0; 1177 1178 int len = 0; 1179 1180 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 1181 if (crypt != NULL) 1182 encrypt = ieee->host_encrypt && crypt && crypt->ops && 1183 ((strcmp(crypt->ops->name, "R-WEP") == 0 || 1184 wpa_ie_len)); 1185 else 1186 encrypt = 0; 1187 1188 if ((ieee->rtllib_ap_sec_type && 1189 (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) || 1190 ieee->bForcedBgMode) { 1191 ieee->pHTInfo->bEnableHT = 0; 1192 ieee->mode = WIRELESS_MODE_G; 1193 } 1194 1195 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1196 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap); 1197 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); 1198 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len, 1199 encrypt, true); 1200 if (ieee->pHTInfo->bCurrentRT2RTAggregation) { 1201 realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; 1202 realtek_ie_len = 1203 sizeof(ieee->pHTInfo->szRT2RTAggBuffer); 1204 HTConstructRT2RTAggElement(ieee, realtek_ie_buf, 1205 &realtek_ie_len); 1206 } 1207 } 1208 1209 if (beacon->bCkipSupported) 1210 ckip_ie_len = 30+2; 1211 if (beacon->bCcxRmEnable) 1212 ccxrm_ie_len = 6+2; 1213 if (beacon->BssCcxVerNumber >= 2) 1214 cxvernum_ie_len = 5+2; 1215 1216 PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid); 1217 if (PMKCacheIdx >= 0) { 1218 wpa_ie_len += 18; 1219 netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n", 1220 wpa_ie_len); 1221 } 1222 len = sizeof(struct rtllib_assoc_request_frame) + 2 1223 + beacon->ssid_len 1224 + rate_len 1225 + wpa_ie_len 1226 + wps_ie_len 1227 + wmm_info_len 1228 + turbo_info_len 1229 + ht_cap_len 1230 + realtek_ie_len 1231 + ckip_ie_len 1232 + ccxrm_ie_len 1233 + cxvernum_ie_len 1234 + ieee->tx_headroom; 1235 1236 skb = dev_alloc_skb(len); 1237 1238 if (!skb) 1239 return NULL; 1240 1241 skb_reserve(skb, ieee->tx_headroom); 1242 1243 hdr = (struct rtllib_assoc_request_frame *) 1244 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2); 1245 1246 1247 hdr->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_REQ); 1248 hdr->header.duration_id = cpu_to_le16(37); 1249 ether_addr_copy(hdr->header.addr1, beacon->bssid); 1250 ether_addr_copy(hdr->header.addr2, ieee->dev->dev_addr); 1251 ether_addr_copy(hdr->header.addr3, beacon->bssid); 1252 1253 ether_addr_copy(ieee->ap_mac_addr, beacon->bssid); 1254 1255 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS); 1256 if (beacon->capability & WLAN_CAPABILITY_PRIVACY) 1257 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 1258 1259 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) 1260 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE); 1261 1262 if (ieee->short_slot && 1263 (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME)) 1264 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); 1265 1266 1267 hdr->listen_interval = cpu_to_le16(beacon->listen_interval); 1268 1269 hdr->info_element[0].id = MFIE_TYPE_SSID; 1270 1271 hdr->info_element[0].len = beacon->ssid_len; 1272 tag = skb_put(skb, beacon->ssid_len); 1273 memcpy(tag, beacon->ssid, beacon->ssid_len); 1274 1275 tag = skb_put(skb, rate_len); 1276 1277 if (beacon->rates_len) { 1278 *tag++ = MFIE_TYPE_RATES; 1279 *tag++ = beacon->rates_len; 1280 for (i = 0; i < beacon->rates_len; i++) 1281 *tag++ = beacon->rates[i]; 1282 } 1283 1284 if (beacon->rates_ex_len) { 1285 *tag++ = MFIE_TYPE_RATES_EX; 1286 *tag++ = beacon->rates_ex_len; 1287 for (i = 0; i < beacon->rates_ex_len; i++) 1288 *tag++ = beacon->rates_ex[i]; 1289 } 1290 1291 if (beacon->bCkipSupported) { 1292 static const u8 AironetIeOui[] = {0x00, 0x01, 0x66}; 1293 u8 CcxAironetBuf[30]; 1294 struct octet_string osCcxAironetIE; 1295 1296 memset(CcxAironetBuf, 0, 30); 1297 osCcxAironetIE.Octet = CcxAironetBuf; 1298 osCcxAironetIE.Length = sizeof(CcxAironetBuf); 1299 memcpy(osCcxAironetIE.Octet, AironetIeOui, 1300 sizeof(AironetIeOui)); 1301 1302 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |= 1303 (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC); 1304 tag = skb_put(skb, ckip_ie_len); 1305 *tag++ = MFIE_TYPE_AIRONET; 1306 *tag++ = osCcxAironetIE.Length; 1307 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length); 1308 tag += osCcxAironetIE.Length; 1309 } 1310 1311 if (beacon->bCcxRmEnable) { 1312 static const u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 1313 0x00}; 1314 struct octet_string osCcxRmCap; 1315 1316 osCcxRmCap.Octet = (u8 *) CcxRmCapBuf; 1317 osCcxRmCap.Length = sizeof(CcxRmCapBuf); 1318 tag = skb_put(skb, ccxrm_ie_len); 1319 *tag++ = MFIE_TYPE_GENERIC; 1320 *tag++ = osCcxRmCap.Length; 1321 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length); 1322 tag += osCcxRmCap.Length; 1323 } 1324 1325 if (beacon->BssCcxVerNumber >= 2) { 1326 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00}; 1327 struct octet_string osCcxVerNum; 1328 1329 CcxVerNumBuf[4] = beacon->BssCcxVerNumber; 1330 osCcxVerNum.Octet = CcxVerNumBuf; 1331 osCcxVerNum.Length = sizeof(CcxVerNumBuf); 1332 tag = skb_put(skb, cxvernum_ie_len); 1333 *tag++ = MFIE_TYPE_GENERIC; 1334 *tag++ = osCcxVerNum.Length; 1335 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length); 1336 tag += osCcxVerNum.Length; 1337 } 1338 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1339 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) { 1340 tag = skb_put(skb, ht_cap_len); 1341 *tag++ = MFIE_TYPE_HT_CAP; 1342 *tag++ = ht_cap_len - 2; 1343 memcpy(tag, ht_cap_buf, ht_cap_len - 2); 1344 tag += ht_cap_len - 2; 1345 } 1346 } 1347 1348 if (wpa_ie_len) { 1349 tag = skb_put(skb, ieee->wpa_ie_len); 1350 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len); 1351 1352 if (PMKCacheIdx >= 0) { 1353 tag = skb_put(skb, 18); 1354 *tag = 1; 1355 *(tag + 1) = 0; 1356 memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID, 1357 16); 1358 } 1359 } 1360 if (wmm_info_len) { 1361 tag = skb_put(skb, wmm_info_len); 1362 rtllib_WMM_Info(ieee, &tag); 1363 } 1364 1365 if (wps_ie_len && ieee->wps_ie) { 1366 tag = skb_put(skb, wps_ie_len); 1367 memcpy(tag, ieee->wps_ie, wps_ie_len); 1368 } 1369 1370 tag = skb_put(skb, turbo_info_len); 1371 if (turbo_info_len) 1372 rtllib_TURBO_Info(ieee, &tag); 1373 1374 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1375 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) { 1376 tag = skb_put(skb, ht_cap_len); 1377 *tag++ = MFIE_TYPE_GENERIC; 1378 *tag++ = ht_cap_len - 2; 1379 memcpy(tag, ht_cap_buf, ht_cap_len - 2); 1380 tag += ht_cap_len - 2; 1381 } 1382 1383 if (ieee->pHTInfo->bCurrentRT2RTAggregation) { 1384 tag = skb_put(skb, realtek_ie_len); 1385 *tag++ = MFIE_TYPE_GENERIC; 1386 *tag++ = realtek_ie_len - 2; 1387 memcpy(tag, realtek_ie_buf, realtek_ie_len - 2); 1388 } 1389 } 1390 1391 kfree(ieee->assocreq_ies); 1392 ieee->assocreq_ies = NULL; 1393 ies = &(hdr->info_element[0].id); 1394 ieee->assocreq_ies_len = (skb->data + skb->len) - ies; 1395 ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC); 1396 if (ieee->assocreq_ies) 1397 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len); 1398 else { 1399 netdev_info(ieee->dev, 1400 "%s()Warning: can't alloc memory for assocreq_ies\n", 1401 __func__); 1402 ieee->assocreq_ies_len = 0; 1403 } 1404 return skb; 1405} 1406 1407static void rtllib_associate_abort(struct rtllib_device *ieee) 1408{ 1409 unsigned long flags; 1410 1411 spin_lock_irqsave(&ieee->lock, flags); 1412 1413 ieee->associate_seq++; 1414 1415 /* don't scan, and avoid to have the RX path possibily 1416 * try again to associate. Even do not react to AUTH or 1417 * ASSOC response. Just wait for the retry wq to be scheduled. 1418 * Here we will check if there are good nets to associate 1419 * with, so we retry or just get back to NO_LINK and scanning 1420 */ 1421 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) { 1422 netdev_dbg(ieee->dev, "Authentication failed\n"); 1423 ieee->softmac_stats.no_auth_rs++; 1424 } else { 1425 netdev_dbg(ieee->dev, "Association failed\n"); 1426 ieee->softmac_stats.no_ass_rs++; 1427 } 1428 1429 ieee->state = RTLLIB_ASSOCIATING_RETRY; 1430 1431 queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq, 1432 RTLLIB_SOFTMAC_ASSOC_RETRY_TIME); 1433 1434 spin_unlock_irqrestore(&ieee->lock, flags); 1435} 1436 1437static void rtllib_associate_abort_cb(unsigned long dev) 1438{ 1439 rtllib_associate_abort((struct rtllib_device *) dev); 1440} 1441 1442static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr) 1443{ 1444 struct rtllib_network *beacon = &ieee->current_network; 1445 struct sk_buff *skb; 1446 1447 netdev_dbg(ieee->dev, "Stopping scan\n"); 1448 1449 ieee->softmac_stats.tx_auth_rq++; 1450 1451 skb = rtllib_authentication_req(beacon, ieee, 0, daddr); 1452 1453 if (!skb) 1454 rtllib_associate_abort(ieee); 1455 else { 1456 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING; 1457 netdev_dbg(ieee->dev, "Sending authentication request\n"); 1458 softmac_mgmt_xmit(skb, ieee); 1459 if (!timer_pending(&ieee->associate_timer)) { 1460 ieee->associate_timer.expires = jiffies + (HZ / 2); 1461 add_timer(&ieee->associate_timer); 1462 } 1463 } 1464} 1465 1466static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, 1467 int chlen) 1468{ 1469 u8 *c; 1470 struct sk_buff *skb; 1471 struct rtllib_network *beacon = &ieee->current_network; 1472 1473 ieee->associate_seq++; 1474 ieee->softmac_stats.tx_auth_rq++; 1475 1476 skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid); 1477 1478 if (!skb) 1479 rtllib_associate_abort(ieee); 1480 else { 1481 c = skb_put(skb, chlen+2); 1482 *(c++) = MFIE_TYPE_CHALLENGE; 1483 *(c++) = chlen; 1484 memcpy(c, challenge, chlen); 1485 1486 netdev_dbg(ieee->dev, 1487 "Sending authentication challenge response\n"); 1488 1489 rtllib_encrypt_fragment(ieee, skb, 1490 sizeof(struct rtllib_hdr_3addr)); 1491 1492 softmac_mgmt_xmit(skb, ieee); 1493 mod_timer(&ieee->associate_timer, jiffies + (HZ/2)); 1494 } 1495 kfree(challenge); 1496} 1497 1498static void rtllib_associate_step2(struct rtllib_device *ieee) 1499{ 1500 struct sk_buff *skb; 1501 struct rtllib_network *beacon = &ieee->current_network; 1502 1503 del_timer_sync(&ieee->associate_timer); 1504 1505 netdev_dbg(ieee->dev, "Sending association request\n"); 1506 1507 ieee->softmac_stats.tx_ass_rq++; 1508 skb = rtllib_association_req(beacon, ieee); 1509 if (!skb) 1510 rtllib_associate_abort(ieee); 1511 else { 1512 softmac_mgmt_xmit(skb, ieee); 1513 mod_timer(&ieee->associate_timer, jiffies + (HZ/2)); 1514 } 1515} 1516 1517static void rtllib_associate_complete_wq(void *data) 1518{ 1519 struct rtllib_device *ieee = (struct rtllib_device *) 1520 container_of_work_rsl(data, 1521 struct rtllib_device, 1522 associate_complete_wq); 1523 struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl); 1524 netdev_info(ieee->dev, "Associated successfully\n"); 1525 if (!ieee->is_silent_reset) { 1526 netdev_info(ieee->dev, "normal associate\n"); 1527 notify_wx_assoc_event(ieee); 1528 } 1529 1530 netif_carrier_on(ieee->dev); 1531 ieee->is_roaming = false; 1532 if (rtllib_is_54g(&ieee->current_network) && 1533 (ieee->modulation & RTLLIB_OFDM_MODULATION)) { 1534 ieee->rate = 108; 1535 netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate); 1536 } else { 1537 ieee->rate = 22; 1538 ieee->SetWirelessMode(ieee->dev, IEEE_B); 1539 netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate); 1540 } 1541 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1542 netdev_info(ieee->dev, "Successfully associated, ht enabled\n"); 1543 HTOnAssocRsp(ieee); 1544 } else { 1545 netdev_info(ieee->dev, 1546 "Successfully associated, ht not enabled(%d, %d)\n", 1547 ieee->pHTInfo->bCurrentHTSupport, 1548 ieee->pHTInfo->bEnableHT); 1549 memset(ieee->dot11HTOperationalRateSet, 0, 16); 1550 } 1551 ieee->LinkDetectInfo.SlotNum = 2 * (1 + 1552 ieee->current_network.beacon_interval / 1553 500); 1554 if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 || 1555 ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) { 1556 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1; 1557 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1; 1558 } 1559 pPSC->LpsIdleCount = 0; 1560 ieee->link_change(ieee->dev); 1561 1562 if (ieee->is_silent_reset) { 1563 netdev_info(ieee->dev, "silent reset associate\n"); 1564 ieee->is_silent_reset = false; 1565 } 1566 1567 if (ieee->data_hard_resume) 1568 ieee->data_hard_resume(ieee->dev); 1569 1570} 1571 1572static void rtllib_sta_send_associnfo(struct rtllib_device *ieee) 1573{ 1574} 1575 1576static void rtllib_associate_complete(struct rtllib_device *ieee) 1577{ 1578 del_timer_sync(&ieee->associate_timer); 1579 1580 ieee->state = RTLLIB_LINKED; 1581 rtllib_sta_send_associnfo(ieee); 1582 1583 queue_work_rsl(ieee->wq, &ieee->associate_complete_wq); 1584} 1585 1586static void rtllib_associate_procedure_wq(void *data) 1587{ 1588 struct rtllib_device *ieee = container_of_dwork_rsl(data, 1589 struct rtllib_device, 1590 associate_procedure_wq); 1591 rtllib_stop_scan_syncro(ieee); 1592 if (ieee->rtllib_ips_leave != NULL) 1593 ieee->rtllib_ips_leave(ieee->dev); 1594 down(&ieee->wx_sem); 1595 1596 if (ieee->data_hard_stop) 1597 ieee->data_hard_stop(ieee->dev); 1598 1599 rtllib_stop_scan(ieee); 1600 RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__, 1601 ieee->current_network.channel); 1602 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 1603 if (ieee->eRFPowerState == eRfOff) { 1604 RT_TRACE(COMP_DBG, 1605 "=============>%s():Rf state is eRfOff, schedule ipsleave wq again,return\n", 1606 __func__); 1607 if (ieee->rtllib_ips_leave_wq != NULL) 1608 ieee->rtllib_ips_leave_wq(ieee->dev); 1609 up(&ieee->wx_sem); 1610 return; 1611 } 1612 ieee->associate_seq = 1; 1613 1614 rtllib_associate_step1(ieee, ieee->current_network.bssid); 1615 1616 up(&ieee->wx_sem); 1617} 1618 1619inline void rtllib_softmac_new_net(struct rtllib_device *ieee, 1620 struct rtllib_network *net) 1621{ 1622 u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1]; 1623 int tmp_ssid_len = 0; 1624 1625 short apset, ssidset, ssidbroad, apmatch, ssidmatch; 1626 1627 /* we are interested in new new only if we are not associated 1628 * and we are not associating / authenticating 1629 */ 1630 if (ieee->state != RTLLIB_NOLINK) 1631 return; 1632 1633 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability & 1634 WLAN_CAPABILITY_ESS)) 1635 return; 1636 1637 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability & 1638 WLAN_CAPABILITY_IBSS)) 1639 return; 1640 1641 if ((ieee->iw_mode == IW_MODE_ADHOC) && 1642 (net->channel > ieee->ibss_maxjoin_chal)) 1643 return; 1644 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) { 1645 /* if the user specified the AP MAC, we need also the essid 1646 * This could be obtained by beacons or, if the network does not 1647 * broadcast it, it can be put manually. 1648 */ 1649 apset = ieee->wap_set; 1650 ssidset = ieee->ssid_set; 1651 ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0'); 1652 apmatch = (memcmp(ieee->current_network.bssid, net->bssid, 1653 ETH_ALEN) == 0); 1654 if (!ssidbroad) { 1655 ssidmatch = (ieee->current_network.ssid_len == 1656 net->hidden_ssid_len) && 1657 (!strncmp(ieee->current_network.ssid, 1658 net->hidden_ssid, net->hidden_ssid_len)); 1659 if (net->hidden_ssid_len > 0) { 1660 strncpy(net->ssid, net->hidden_ssid, 1661 net->hidden_ssid_len); 1662 net->ssid_len = net->hidden_ssid_len; 1663 ssidbroad = 1; 1664 } 1665 } else 1666 ssidmatch = 1667 (ieee->current_network.ssid_len == net->ssid_len) && 1668 (!strncmp(ieee->current_network.ssid, net->ssid, 1669 net->ssid_len)); 1670 1671 /* if the user set the AP check if match. 1672 * if the network does not broadcast essid we check the 1673 * user supplied ANY essid 1674 * if the network does broadcast and the user does not set 1675 * essid it is OK 1676 * if the network does broadcast and the user did set essid 1677 * check if essid match 1678 * if the ap is not set, check that the user set the bssid 1679 * and the network does broadcast and that those two bssid match 1680 */ 1681 if ((apset && apmatch && 1682 ((ssidset && ssidbroad && ssidmatch) || 1683 (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) || 1684 (!apset && ssidset && ssidbroad && ssidmatch) || 1685 (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) { 1686 /* if the essid is hidden replace it with the 1687 * essid provided by the user. 1688 */ 1689 if (!ssidbroad) { 1690 strncpy(tmp_ssid, ieee->current_network.ssid, 1691 IW_ESSID_MAX_SIZE); 1692 tmp_ssid_len = ieee->current_network.ssid_len; 1693 } 1694 memcpy(&ieee->current_network, net, 1695 sizeof(struct rtllib_network)); 1696 if (!ssidbroad) { 1697 strncpy(ieee->current_network.ssid, tmp_ssid, 1698 IW_ESSID_MAX_SIZE); 1699 ieee->current_network.ssid_len = tmp_ssid_len; 1700 } 1701 netdev_info(ieee->dev, 1702 "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d, mode:%x cur_net.flags:0x%x\n", 1703 ieee->current_network.ssid, 1704 ieee->current_network.channel, 1705 ieee->current_network.qos_data.supported, 1706 ieee->pHTInfo->bEnableHT, 1707 ieee->current_network.bssht.bdSupportHT, 1708 ieee->current_network.mode, 1709 ieee->current_network.flags); 1710 1711 if ((rtllib_act_scanning(ieee, false)) && 1712 !(ieee->softmac_features & IEEE_SOFTMAC_SCAN)) 1713 rtllib_stop_scan_syncro(ieee); 1714 1715 HTResetIOTSetting(ieee->pHTInfo); 1716 ieee->wmm_acm = 0; 1717 if (ieee->iw_mode == IW_MODE_INFRA) { 1718 /* Join the network for the first time */ 1719 ieee->AsocRetryCount = 0; 1720 if ((ieee->current_network.qos_data.supported == 1) && 1721 ieee->current_network.bssht.bdSupportHT) 1722 HTResetSelfAndSavePeerSetting(ieee, 1723 &(ieee->current_network)); 1724 else 1725 ieee->pHTInfo->bCurrentHTSupport = 1726 false; 1727 1728 ieee->state = RTLLIB_ASSOCIATING; 1729 if (ieee->LedControlHandler != NULL) 1730 ieee->LedControlHandler(ieee->dev, 1731 LED_CTL_START_TO_LINK); 1732 queue_delayed_work_rsl(ieee->wq, 1733 &ieee->associate_procedure_wq, 0); 1734 } else { 1735 if (rtllib_is_54g(&ieee->current_network) && 1736 (ieee->modulation & 1737 RTLLIB_OFDM_MODULATION)) { 1738 ieee->rate = 108; 1739 ieee->SetWirelessMode(ieee->dev, 1740 IEEE_G); 1741 netdev_info(ieee->dev, 1742 "Using G rates\n"); 1743 } else { 1744 ieee->rate = 22; 1745 ieee->SetWirelessMode(ieee->dev, 1746 IEEE_B); 1747 netdev_info(ieee->dev, 1748 "Using B rates\n"); 1749 } 1750 memset(ieee->dot11HTOperationalRateSet, 0, 16); 1751 ieee->state = RTLLIB_LINKED; 1752 } 1753 } 1754 } 1755} 1756 1757static void rtllib_softmac_check_all_nets(struct rtllib_device *ieee) 1758{ 1759 unsigned long flags; 1760 struct rtllib_network *target; 1761 1762 spin_lock_irqsave(&ieee->lock, flags); 1763 1764 list_for_each_entry(target, &ieee->network_list, list) { 1765 1766 /* if the state become different that NOLINK means 1767 * we had found what we are searching for 1768 */ 1769 1770 if (ieee->state != RTLLIB_NOLINK) 1771 break; 1772 1773 if (ieee->scan_age == 0 || time_after(target->last_scanned + 1774 ieee->scan_age, jiffies)) 1775 rtllib_softmac_new_net(ieee, target); 1776 } 1777 spin_unlock_irqrestore(&ieee->lock, flags); 1778} 1779 1780static inline u16 auth_parse(struct net_device *dev, struct sk_buff *skb, 1781 u8 **challenge, int *chlen) 1782{ 1783 struct rtllib_authentication *a; 1784 u8 *t; 1785 1786 if (skb->len < (sizeof(struct rtllib_authentication) - 1787 sizeof(struct rtllib_info_element))) { 1788 netdev_dbg(dev, "invalid len in auth resp: %d\n", skb->len); 1789 return 0xcafe; 1790 } 1791 *challenge = NULL; 1792 a = (struct rtllib_authentication *) skb->data; 1793 if (skb->len > (sizeof(struct rtllib_authentication) + 3)) { 1794 t = skb->data + sizeof(struct rtllib_authentication); 1795 1796 if (*(t++) == MFIE_TYPE_CHALLENGE) { 1797 *chlen = *(t++); 1798 *challenge = kmemdup(t, *chlen, GFP_ATOMIC); 1799 if (!*challenge) 1800 return -ENOMEM; 1801 } 1802 } 1803 return le16_to_cpu(a->status); 1804} 1805 1806static int auth_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest) 1807{ 1808 struct rtllib_authentication *a; 1809 1810 if (skb->len < (sizeof(struct rtllib_authentication) - 1811 sizeof(struct rtllib_info_element))) { 1812 netdev_dbg(dev, "invalid len in auth request: %d\n", skb->len); 1813 return -1; 1814 } 1815 a = (struct rtllib_authentication *) skb->data; 1816 1817 ether_addr_copy(dest, a->header.addr2); 1818 1819 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN) 1820 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; 1821 1822 return WLAN_STATUS_SUCCESS; 1823} 1824 1825static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb, 1826 u8 *src) 1827{ 1828 u8 *tag; 1829 u8 *skbend; 1830 u8 *ssid = NULL; 1831 u8 ssidlen = 0; 1832 struct rtllib_hdr_3addr *header = 1833 (struct rtllib_hdr_3addr *) skb->data; 1834 bool bssid_match; 1835 1836 if (skb->len < sizeof(struct rtllib_hdr_3addr)) 1837 return -1; /* corrupted */ 1838 1839 bssid_match = 1840 (!ether_addr_equal(header->addr3, ieee->current_network.bssid)) && 1841 (!is_broadcast_ether_addr(header->addr3)); 1842 if (bssid_match) 1843 return -1; 1844 1845 ether_addr_copy(src, header->addr2); 1846 1847 skbend = (u8 *)skb->data + skb->len; 1848 1849 tag = skb->data + sizeof(struct rtllib_hdr_3addr); 1850 1851 while (tag + 1 < skbend) { 1852 if (*tag == 0) { 1853 ssid = tag + 2; 1854 ssidlen = *(tag + 1); 1855 break; 1856 } 1857 tag++; /* point to the len field */ 1858 tag = tag + *(tag); /* point to the last data byte of the tag */ 1859 tag++; /* point to the next tag */ 1860 } 1861 1862 if (ssidlen == 0) 1863 return 1; 1864 1865 if (!ssid) 1866 return 1; /* ssid not found in tagged param */ 1867 1868 return !strncmp(ssid, ieee->current_network.ssid, ssidlen); 1869} 1870 1871static int assoc_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest) 1872{ 1873 struct rtllib_assoc_request_frame *a; 1874 1875 if (skb->len < (sizeof(struct rtllib_assoc_request_frame) - 1876 sizeof(struct rtllib_info_element))) { 1877 netdev_dbg(dev, "invalid len in auth request:%d\n", skb->len); 1878 return -1; 1879 } 1880 1881 a = (struct rtllib_assoc_request_frame *) skb->data; 1882 1883 ether_addr_copy(dest, a->header.addr2); 1884 1885 return 0; 1886} 1887 1888static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb, 1889 int *aid) 1890{ 1891 struct rtllib_assoc_response_frame *response_head; 1892 u16 status_code; 1893 1894 if (skb->len < sizeof(struct rtllib_assoc_response_frame)) { 1895 netdev_dbg(ieee->dev, "Invalid len in auth resp: %d\n", 1896 skb->len); 1897 return 0xcafe; 1898 } 1899 1900 response_head = (struct rtllib_assoc_response_frame *) skb->data; 1901 *aid = le16_to_cpu(response_head->aid) & 0x3fff; 1902 1903 status_code = le16_to_cpu(response_head->status); 1904 if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES || 1905 status_code == WLAN_STATUS_CAPS_UNSUPPORTED) && 1906 ((ieee->mode == IEEE_G) && 1907 (ieee->current_network.mode == IEEE_N_24G) && 1908 (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) { 1909 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE; 1910 } else { 1911 ieee->AsocRetryCount = 0; 1912 } 1913 1914 return le16_to_cpu(response_head->status); 1915} 1916 1917void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb) 1918{ 1919 u8 dest[ETH_ALEN]; 1920 1921 ieee->softmac_stats.rx_probe_rq++; 1922 if (probe_rq_parse(ieee, skb, dest) > 0) { 1923 ieee->softmac_stats.tx_probe_rs++; 1924 rtllib_resp_to_probe(ieee, dest); 1925 } 1926} 1927 1928static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee, 1929 struct sk_buff *skb) 1930{ 1931 u8 dest[ETH_ALEN]; 1932 int status; 1933 1934 ieee->softmac_stats.rx_auth_rq++; 1935 1936 status = auth_rq_parse(ieee->dev, skb, dest); 1937 if (status != -1) 1938 rtllib_resp_to_auth(ieee, status, dest); 1939} 1940 1941static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee, 1942 struct sk_buff *skb) 1943{ 1944 u8 dest[ETH_ALEN]; 1945 1946 1947 ieee->softmac_stats.rx_ass_rq++; 1948 if (assoc_rq_parse(ieee->dev, skb, dest) != -1) 1949 rtllib_resp_to_assoc_rq(ieee, dest); 1950 1951 netdev_info(ieee->dev, "New client associated: %pM\n", dest); 1952} 1953 1954void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr) 1955{ 1956 1957 struct sk_buff *buf = rtllib_null_func(ieee, pwr); 1958 1959 if (buf) 1960 softmac_ps_mgmt_xmit(buf, ieee); 1961} 1962EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame); 1963 1964void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee) 1965{ 1966 struct sk_buff *buf = rtllib_pspoll_func(ieee); 1967 1968 if (buf) 1969 softmac_ps_mgmt_xmit(buf, ieee); 1970} 1971 1972static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time) 1973{ 1974 int timeout = ieee->ps_timeout; 1975 u8 dtim; 1976 struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl); 1977 1978 if (ieee->LPSDelayCnt) { 1979 ieee->LPSDelayCnt--; 1980 return 0; 1981 } 1982 1983 dtim = ieee->current_network.dtim_data; 1984 if (!(dtim & RTLLIB_DTIM_VALID)) 1985 return 0; 1986 timeout = ieee->current_network.beacon_interval; 1987 ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID; 1988 /* there's no need to nofity AP that I find you buffered 1989 * with broadcast packet 1990 */ 1991 if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps)) 1992 return 2; 1993 1994 if (!time_after(jiffies, 1995 ieee->dev->trans_start + msecs_to_jiffies(timeout))) 1996 return 0; 1997 if (!time_after(jiffies, 1998 ieee->last_rx_ps_time + msecs_to_jiffies(timeout))) 1999 return 0; 2000 if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) && 2001 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head)) 2002 return 0; 2003 2004 if (time) { 2005 if (ieee->bAwakePktSent) { 2006 pPSC->LPSAwakeIntvl = 1; 2007 } else { 2008 u8 MaxPeriod = 1; 2009 2010 if (pPSC->LPSAwakeIntvl == 0) 2011 pPSC->LPSAwakeIntvl = 1; 2012 if (pPSC->RegMaxLPSAwakeIntvl == 0) 2013 MaxPeriod = 1; 2014 else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF) 2015 MaxPeriod = ieee->current_network.dtim_period; 2016 else 2017 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl; 2018 pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >= 2019 MaxPeriod) ? MaxPeriod : 2020 (pPSC->LPSAwakeIntvl + 1); 2021 } 2022 { 2023 u8 LPSAwakeIntvl_tmp = 0; 2024 u8 period = ieee->current_network.dtim_period; 2025 u8 count = ieee->current_network.tim.tim_count; 2026 2027 if (count == 0) { 2028 if (pPSC->LPSAwakeIntvl > period) 2029 LPSAwakeIntvl_tmp = period + 2030 (pPSC->LPSAwakeIntvl - 2031 period) - 2032 ((pPSC->LPSAwakeIntvl-period) % 2033 period); 2034 else 2035 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl; 2036 2037 } else { 2038 if (pPSC->LPSAwakeIntvl > 2039 ieee->current_network.tim.tim_count) 2040 LPSAwakeIntvl_tmp = count + 2041 (pPSC->LPSAwakeIntvl - count) - 2042 ((pPSC->LPSAwakeIntvl-count)%period); 2043 else 2044 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl; 2045 } 2046 2047 *time = ieee->current_network.last_dtim_sta_time 2048 + msecs_to_jiffies(ieee->current_network.beacon_interval * 2049 LPSAwakeIntvl_tmp); 2050 } 2051 } 2052 2053 return 1; 2054 2055 2056} 2057 2058static inline void rtllib_sta_ps(struct rtllib_device *ieee) 2059{ 2060 u64 time; 2061 short sleep; 2062 unsigned long flags, flags2; 2063 2064 spin_lock_irqsave(&ieee->lock, flags); 2065 2066 if ((ieee->ps == RTLLIB_PS_DISABLED || 2067 ieee->iw_mode != IW_MODE_INFRA || 2068 ieee->state != RTLLIB_LINKED)) { 2069 RT_TRACE(COMP_DBG, 2070 "=====>%s(): no need to ps,wake up!! ieee->ps is %d, ieee->iw_mode is %d, ieee->state is %d\n", 2071 __func__, ieee->ps, ieee->iw_mode, ieee->state); 2072 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 2073 rtllib_sta_wakeup(ieee, 1); 2074 2075 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 2076 } 2077 sleep = rtllib_sta_ps_sleep(ieee, &time); 2078 /* 2 wake, 1 sleep, 0 do nothing */ 2079 if (sleep == 0) 2080 goto out; 2081 if (sleep == 1) { 2082 if (ieee->sta_sleep == LPS_IS_SLEEP) { 2083 ieee->enter_sleep_state(ieee->dev, time); 2084 } else if (ieee->sta_sleep == LPS_IS_WAKE) { 2085 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 2086 2087 if (ieee->ps_is_queue_empty(ieee->dev)) { 2088 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND; 2089 ieee->ack_tx_to_ieee = 1; 2090 rtllib_sta_ps_send_null_frame(ieee, 1); 2091 ieee->ps_time = time; 2092 } 2093 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 2094 2095 } 2096 2097 ieee->bAwakePktSent = false; 2098 2099 } else if (sleep == 2) { 2100 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 2101 2102 rtllib_sta_wakeup(ieee, 1); 2103 2104 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 2105 } 2106 2107out: 2108 spin_unlock_irqrestore(&ieee->lock, flags); 2109 2110} 2111 2112static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl) 2113{ 2114 if (ieee->sta_sleep == LPS_IS_WAKE) { 2115 if (nl) { 2116 if (ieee->pHTInfo->IOTAction & 2117 HT_IOT_ACT_NULL_DATA_POWER_SAVING) { 2118 ieee->ack_tx_to_ieee = 1; 2119 rtllib_sta_ps_send_null_frame(ieee, 0); 2120 } else { 2121 ieee->ack_tx_to_ieee = 1; 2122 rtllib_sta_ps_send_pspoll_frame(ieee); 2123 } 2124 } 2125 return; 2126 2127 } 2128 2129 if (ieee->sta_sleep == LPS_IS_SLEEP) 2130 ieee->sta_wake_up(ieee->dev); 2131 if (nl) { 2132 if (ieee->pHTInfo->IOTAction & 2133 HT_IOT_ACT_NULL_DATA_POWER_SAVING) { 2134 ieee->ack_tx_to_ieee = 1; 2135 rtllib_sta_ps_send_null_frame(ieee, 0); 2136 } else { 2137 ieee->ack_tx_to_ieee = 1; 2138 ieee->polling = true; 2139 rtllib_sta_ps_send_pspoll_frame(ieee); 2140 } 2141 2142 } else { 2143 ieee->sta_sleep = LPS_IS_WAKE; 2144 ieee->polling = false; 2145 } 2146} 2147 2148void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success) 2149{ 2150 unsigned long flags, flags2; 2151 2152 spin_lock_irqsave(&ieee->lock, flags); 2153 2154 if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) { 2155 /* Null frame with PS bit set */ 2156 if (success) { 2157 ieee->sta_sleep = LPS_IS_SLEEP; 2158 ieee->enter_sleep_state(ieee->dev, ieee->ps_time); 2159 } 2160 /* if the card report not success we can't be sure the AP 2161 * has not RXed so we can't assume the AP believe us awake 2162 */ 2163 } else {/* 21112005 - tx again null without PS bit if lost */ 2164 2165 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) { 2166 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 2167 if (ieee->pHTInfo->IOTAction & 2168 HT_IOT_ACT_NULL_DATA_POWER_SAVING) 2169 rtllib_sta_ps_send_null_frame(ieee, 0); 2170 else 2171 rtllib_sta_ps_send_pspoll_frame(ieee); 2172 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 2173 } 2174 } 2175 spin_unlock_irqrestore(&ieee->lock, flags); 2176} 2177EXPORT_SYMBOL(rtllib_ps_tx_ack); 2178 2179static void rtllib_process_action(struct rtllib_device *ieee, 2180 struct sk_buff *skb) 2181{ 2182 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; 2183 u8 *act = rtllib_get_payload((struct rtllib_hdr *)header); 2184 u8 category = 0; 2185 2186 if (act == NULL) { 2187 netdev_warn(ieee->dev, 2188 "Error getting payload of action frame\n"); 2189 return; 2190 } 2191 2192 category = *act; 2193 act++; 2194 switch (category) { 2195 case ACT_CAT_BA: 2196 switch (*act) { 2197 case ACT_ADDBAREQ: 2198 rtllib_rx_ADDBAReq(ieee, skb); 2199 break; 2200 case ACT_ADDBARSP: 2201 rtllib_rx_ADDBARsp(ieee, skb); 2202 break; 2203 case ACT_DELBA: 2204 rtllib_rx_DELBA(ieee, skb); 2205 break; 2206 } 2207 break; 2208 default: 2209 break; 2210 } 2211} 2212 2213inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb, 2214 struct rtllib_rx_stats *rx_stats) 2215{ 2216 u16 errcode; 2217 int aid; 2218 u8 *ies; 2219 struct rtllib_assoc_response_frame *assoc_resp; 2220 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; 2221 u16 frame_ctl = le16_to_cpu(header->frame_ctl); 2222 2223 netdev_dbg(ieee->dev, "received [RE]ASSOCIATION RESPONSE (%d)\n", 2224 WLAN_FC_GET_STYPE(frame_ctl)); 2225 2226 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 2227 ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED && 2228 (ieee->iw_mode == IW_MODE_INFRA)) { 2229 errcode = assoc_parse(ieee, skb, &aid); 2230 if (!errcode) { 2231 struct rtllib_network *network = 2232 kzalloc(sizeof(struct rtllib_network), 2233 GFP_ATOMIC); 2234 2235 if (!network) 2236 return 1; 2237 ieee->state = RTLLIB_LINKED; 2238 ieee->assoc_id = aid; 2239 ieee->softmac_stats.rx_ass_ok++; 2240 /* station support qos */ 2241 /* Let the register setting default with Legacy station */ 2242 assoc_resp = (struct rtllib_assoc_response_frame *)skb->data; 2243 if (ieee->current_network.qos_data.supported == 1) { 2244 if (rtllib_parse_info_param(ieee, assoc_resp->info_element, 2245 rx_stats->len - sizeof(*assoc_resp), 2246 network, rx_stats)) { 2247 kfree(network); 2248 return 1; 2249 } 2250 memcpy(ieee->pHTInfo->PeerHTCapBuf, 2251 network->bssht.bdHTCapBuf, 2252 network->bssht.bdHTCapLen); 2253 memcpy(ieee->pHTInfo->PeerHTInfoBuf, 2254 network->bssht.bdHTInfoBuf, 2255 network->bssht.bdHTInfoLen); 2256 if (ieee->handle_assoc_response != NULL) 2257 ieee->handle_assoc_response(ieee->dev, 2258 (struct rtllib_assoc_response_frame *)header, 2259 network); 2260 } 2261 kfree(network); 2262 2263 kfree(ieee->assocresp_ies); 2264 ieee->assocresp_ies = NULL; 2265 ies = &(assoc_resp->info_element[0].id); 2266 ieee->assocresp_ies_len = (skb->data + skb->len) - ies; 2267 ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len, 2268 GFP_ATOMIC); 2269 if (ieee->assocresp_ies) 2270 memcpy(ieee->assocresp_ies, ies, 2271 ieee->assocresp_ies_len); 2272 else { 2273 netdev_info(ieee->dev, 2274 "%s()Warning: can't alloc memory for assocresp_ies\n", 2275 __func__); 2276 ieee->assocresp_ies_len = 0; 2277 } 2278 rtllib_associate_complete(ieee); 2279 } else { 2280 /* aid could not been allocated */ 2281 ieee->softmac_stats.rx_ass_err++; 2282 netdev_info(ieee->dev, 2283 "Association response status code 0x%x\n", 2284 errcode); 2285 if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT) 2286 queue_delayed_work_rsl(ieee->wq, 2287 &ieee->associate_procedure_wq, 0); 2288 else 2289 rtllib_associate_abort(ieee); 2290 } 2291 } 2292 return 0; 2293} 2294 2295static void rtllib_rx_auth_resp(struct rtllib_device *ieee, struct sk_buff *skb) 2296{ 2297 u16 errcode; 2298 u8 *challenge; 2299 int chlen = 0; 2300 bool bSupportNmode = true, bHalfSupportNmode = false; 2301 2302 errcode = auth_parse(ieee->dev, skb, &challenge, &chlen); 2303 2304 if (errcode) { 2305 ieee->softmac_stats.rx_auth_rs_err++; 2306 netdev_info(ieee->dev, 2307 "Authentication respose status code 0x%x", errcode); 2308 rtllib_associate_abort(ieee); 2309 return; 2310 } 2311 2312 if (ieee->open_wep || !challenge) { 2313 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED; 2314 ieee->softmac_stats.rx_auth_rs_ok++; 2315 if (!(ieee->pHTInfo->IOTAction & HT_IOT_ACT_PURE_N_MODE)) { 2316 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) { 2317 if (IsHTHalfNmodeAPs(ieee)) { 2318 bSupportNmode = true; 2319 bHalfSupportNmode = true; 2320 } else { 2321 bSupportNmode = false; 2322 bHalfSupportNmode = false; 2323 } 2324 } 2325 } 2326 /* Dummy wirless mode setting to avoid encryption issue */ 2327 if (bSupportNmode) { 2328 ieee->SetWirelessMode(ieee->dev, 2329 ieee->current_network.mode); 2330 } else { 2331 /*TODO*/ 2332 ieee->SetWirelessMode(ieee->dev, IEEE_G); 2333 } 2334 2335 if ((ieee->current_network.mode == IEEE_N_24G) && 2336 bHalfSupportNmode) { 2337 netdev_info(ieee->dev, "======>enter half N mode\n"); 2338 ieee->bHalfWirelessN24GMode = true; 2339 } else { 2340 ieee->bHalfWirelessN24GMode = false; 2341 } 2342 rtllib_associate_step2(ieee); 2343 } else { 2344 rtllib_auth_challenge(ieee, challenge, chlen); 2345 } 2346} 2347 2348inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb, 2349 struct rtllib_rx_stats *rx_stats) 2350{ 2351 2352 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) { 2353 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING && 2354 (ieee->iw_mode == IW_MODE_INFRA)) { 2355 netdev_dbg(ieee->dev, 2356 "Received authentication response"); 2357 rtllib_rx_auth_resp(ieee, skb); 2358 } else if (ieee->iw_mode == IW_MODE_MASTER) { 2359 rtllib_rx_auth_rq(ieee, skb); 2360 } 2361 } 2362 return 0; 2363} 2364 2365inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb) 2366{ 2367 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; 2368 u16 frame_ctl; 2369 2370 if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) 2371 return 0; 2372 2373 /* FIXME for now repeat all the association procedure 2374 * both for disassociation and deauthentication 2375 */ 2376 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 2377 ieee->state == RTLLIB_LINKED && 2378 (ieee->iw_mode == IW_MODE_INFRA)) { 2379 frame_ctl = le16_to_cpu(header->frame_ctl); 2380 netdev_info(ieee->dev, 2381 "==========>received disassoc/deauth(%x) frame, reason code:%x\n", 2382 WLAN_FC_GET_STYPE(frame_ctl), 2383 ((struct rtllib_disassoc *)skb->data)->reason); 2384 ieee->state = RTLLIB_ASSOCIATING; 2385 ieee->softmac_stats.reassoc++; 2386 ieee->is_roaming = true; 2387 ieee->LinkDetectInfo.bBusyTraffic = false; 2388 rtllib_disassociate(ieee); 2389 RemovePeerTS(ieee, header->addr2); 2390 if (ieee->LedControlHandler != NULL) 2391 ieee->LedControlHandler(ieee->dev, 2392 LED_CTL_START_TO_LINK); 2393 2394 if (!(ieee->rtllib_ap_sec_type(ieee) & 2395 (SEC_ALG_CCMP|SEC_ALG_TKIP))) 2396 queue_delayed_work_rsl(ieee->wq, 2397 &ieee->associate_procedure_wq, 5); 2398 } 2399 return 0; 2400} 2401 2402inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee, 2403 struct sk_buff *skb, 2404 struct rtllib_rx_stats *rx_stats, u16 type, 2405 u16 stype) 2406{ 2407 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; 2408 u16 frame_ctl; 2409 2410 if (!ieee->proto_started) 2411 return 0; 2412 2413 frame_ctl = le16_to_cpu(header->frame_ctl); 2414 switch (WLAN_FC_GET_STYPE(frame_ctl)) { 2415 case RTLLIB_STYPE_ASSOC_RESP: 2416 case RTLLIB_STYPE_REASSOC_RESP: 2417 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1) 2418 return 1; 2419 break; 2420 case RTLLIB_STYPE_ASSOC_REQ: 2421 case RTLLIB_STYPE_REASSOC_REQ: 2422 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 2423 ieee->iw_mode == IW_MODE_MASTER) 2424 rtllib_rx_assoc_rq(ieee, skb); 2425 break; 2426 case RTLLIB_STYPE_AUTH: 2427 rtllib_rx_auth(ieee, skb, rx_stats); 2428 break; 2429 case RTLLIB_STYPE_DISASSOC: 2430 case RTLLIB_STYPE_DEAUTH: 2431 rtllib_rx_deauth(ieee, skb); 2432 break; 2433 case RTLLIB_STYPE_MANAGE_ACT: 2434 rtllib_process_action(ieee, skb); 2435 break; 2436 default: 2437 return -1; 2438 } 2439 return 0; 2440} 2441 2442/* following are for a simpler TX queue management. 2443 * Instead of using netif_[stop/wake]_queue the driver 2444 * will use these two functions (plus a reset one), that 2445 * will internally use the kernel netif_* and takes 2446 * care of the ieee802.11 fragmentation. 2447 * So the driver receives a fragment per time and might 2448 * call the stop function when it wants to not 2449 * have enough room to TX an entire packet. 2450 * This might be useful if each fragment needs it's own 2451 * descriptor, thus just keep a total free memory > than 2452 * the max fragmentation threshold is not enough.. If the 2453 * ieee802.11 stack passed a TXB struct then you need 2454 * to keep N free descriptors where 2455 * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD 2456 * In this way you need just one and the 802.11 stack 2457 * will take care of buffering fragments and pass them to 2458 * to the driver later, when it wakes the queue. 2459 */ 2460void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee) 2461{ 2462 2463 unsigned int queue_index = txb->queue_index; 2464 unsigned long flags; 2465 int i; 2466 struct cb_desc *tcb_desc = NULL; 2467 unsigned long queue_len = 0; 2468 2469 spin_lock_irqsave(&ieee->lock, flags); 2470 2471 /* called with 2nd parm 0, no tx mgmt lock required */ 2472 rtllib_sta_wakeup(ieee, 0); 2473 2474 /* update the tx status */ 2475 tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb + 2476 MAX_DEV_ADDR_SIZE); 2477 if (tcb_desc->bMulticast) 2478 ieee->stats.multicast++; 2479 2480 /* if xmit available, just xmit it immediately, else just insert it to 2481 * the wait queue 2482 */ 2483 for (i = 0; i < txb->nr_frags; i++) { 2484 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]); 2485 if ((queue_len != 0) || 2486 (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) || 2487 (ieee->queue_stop)) { 2488 /* insert the skb packet to the wait queue 2489 * as for the completion function, it does not need 2490 * to check it any more. 2491 */ 2492 if (queue_len < 200) 2493 skb_queue_tail(&ieee->skb_waitQ[queue_index], 2494 txb->fragments[i]); 2495 else 2496 kfree_skb(txb->fragments[i]); 2497 } else { 2498 ieee->softmac_data_hard_start_xmit( 2499 txb->fragments[i], 2500 ieee->dev, ieee->rate); 2501 } 2502 } 2503 2504 rtllib_txb_free(txb); 2505 2506 spin_unlock_irqrestore(&ieee->lock, flags); 2507 2508} 2509 2510void rtllib_reset_queue(struct rtllib_device *ieee) 2511{ 2512 unsigned long flags; 2513 2514 spin_lock_irqsave(&ieee->lock, flags); 2515 init_mgmt_queue(ieee); 2516 if (ieee->tx_pending.txb) { 2517 rtllib_txb_free(ieee->tx_pending.txb); 2518 ieee->tx_pending.txb = NULL; 2519 } 2520 ieee->queue_stop = 0; 2521 spin_unlock_irqrestore(&ieee->lock, flags); 2522 2523} 2524EXPORT_SYMBOL(rtllib_reset_queue); 2525 2526void rtllib_stop_all_queues(struct rtllib_device *ieee) 2527{ 2528 unsigned int i; 2529 2530 for (i = 0; i < ieee->dev->num_tx_queues; i++) 2531 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies; 2532 2533 netif_tx_stop_all_queues(ieee->dev); 2534} 2535 2536void rtllib_wake_all_queues(struct rtllib_device *ieee) 2537{ 2538 netif_tx_wake_all_queues(ieee->dev); 2539} 2540 2541inline void rtllib_randomize_cell(struct rtllib_device *ieee) 2542{ 2543 2544 random_ether_addr(ieee->current_network.bssid); 2545} 2546 2547/* called in user context only */ 2548static void rtllib_start_master_bss(struct rtllib_device *ieee) 2549{ 2550 ieee->assoc_id = 1; 2551 2552 if (ieee->current_network.ssid_len == 0) { 2553 strncpy(ieee->current_network.ssid, 2554 RTLLIB_DEFAULT_TX_ESSID, 2555 IW_ESSID_MAX_SIZE); 2556 2557 ieee->current_network.ssid_len = 2558 strlen(RTLLIB_DEFAULT_TX_ESSID); 2559 ieee->ssid_set = 1; 2560 } 2561 2562 ether_addr_copy(ieee->current_network.bssid, ieee->dev->dev_addr); 2563 2564 ieee->set_chan(ieee->dev, ieee->current_network.channel); 2565 ieee->state = RTLLIB_LINKED; 2566 ieee->link_change(ieee->dev); 2567 notify_wx_assoc_event(ieee); 2568 2569 if (ieee->data_hard_resume) 2570 ieee->data_hard_resume(ieee->dev); 2571 2572 netif_carrier_on(ieee->dev); 2573} 2574 2575static void rtllib_start_monitor_mode(struct rtllib_device *ieee) 2576{ 2577 /* reset hardware status */ 2578 if (ieee->raw_tx) { 2579 if (ieee->data_hard_resume) 2580 ieee->data_hard_resume(ieee->dev); 2581 2582 netif_carrier_on(ieee->dev); 2583 } 2584} 2585 2586static void rtllib_start_ibss_wq(void *data) 2587{ 2588 struct rtllib_device *ieee = container_of_dwork_rsl(data, 2589 struct rtllib_device, start_ibss_wq); 2590 /* iwconfig mode ad-hoc will schedule this and return 2591 * on the other hand this will block further iwconfig SET 2592 * operations because of the wx_sem hold. 2593 * Anyway some most set operations set a flag to speed-up 2594 * (abort) this wq (when syncro scanning) before sleeping 2595 * on the semaphore 2596 */ 2597 if (!ieee->proto_started) { 2598 netdev_info(ieee->dev, "==========oh driver down return\n"); 2599 return; 2600 } 2601 down(&ieee->wx_sem); 2602 2603 if (ieee->current_network.ssid_len == 0) { 2604 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID); 2605 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID); 2606 ieee->ssid_set = 1; 2607 } 2608 2609 ieee->state = RTLLIB_NOLINK; 2610 ieee->mode = IEEE_G; 2611 /* check if we have this cell in our network list */ 2612 rtllib_softmac_check_all_nets(ieee); 2613 2614 2615 /* if not then the state is not linked. Maybe the user switched to 2616 * ad-hoc mode just after being in monitor mode, or just after 2617 * being very few time in managed mode (so the card have had no 2618 * time to scan all the chans..) or we have just run up the iface 2619 * after setting ad-hoc mode. So we have to give another try.. 2620 * Here, in ibss mode, should be safe to do this without extra care 2621 * (in bss mode we had to make sure no-one tried to associate when 2622 * we had just checked the ieee->state and we was going to start the 2623 * scan) because in ibss mode the rtllib_new_net function, when 2624 * finds a good net, just set the ieee->state to RTLLIB_LINKED, 2625 * so, at worst, we waste a bit of time to initiate an unneeded syncro 2626 * scan, that will stop at the first round because it sees the state 2627 * associated. 2628 */ 2629 if (ieee->state == RTLLIB_NOLINK) 2630 rtllib_start_scan_syncro(ieee, 0); 2631 2632 /* the network definitively is not here.. create a new cell */ 2633 if (ieee->state == RTLLIB_NOLINK) { 2634 netdev_info(ieee->dev, "creating new IBSS cell\n"); 2635 ieee->current_network.channel = ieee->IbssStartChnl; 2636 if (!ieee->wap_set) 2637 rtllib_randomize_cell(ieee); 2638 2639 if (ieee->modulation & RTLLIB_CCK_MODULATION) { 2640 2641 ieee->current_network.rates_len = 4; 2642 2643 ieee->current_network.rates[0] = 2644 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB; 2645 ieee->current_network.rates[1] = 2646 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB; 2647 ieee->current_network.rates[2] = 2648 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB; 2649 ieee->current_network.rates[3] = 2650 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB; 2651 2652 } else 2653 ieee->current_network.rates_len = 0; 2654 2655 if (ieee->modulation & RTLLIB_OFDM_MODULATION) { 2656 ieee->current_network.rates_ex_len = 8; 2657 2658 ieee->current_network.rates_ex[0] = 2659 RTLLIB_OFDM_RATE_6MB; 2660 ieee->current_network.rates_ex[1] = 2661 RTLLIB_OFDM_RATE_9MB; 2662 ieee->current_network.rates_ex[2] = 2663 RTLLIB_OFDM_RATE_12MB; 2664 ieee->current_network.rates_ex[3] = 2665 RTLLIB_OFDM_RATE_18MB; 2666 ieee->current_network.rates_ex[4] = 2667 RTLLIB_OFDM_RATE_24MB; 2668 ieee->current_network.rates_ex[5] = 2669 RTLLIB_OFDM_RATE_36MB; 2670 ieee->current_network.rates_ex[6] = 2671 RTLLIB_OFDM_RATE_48MB; 2672 ieee->current_network.rates_ex[7] = 2673 RTLLIB_OFDM_RATE_54MB; 2674 2675 ieee->rate = 108; 2676 } else { 2677 ieee->current_network.rates_ex_len = 0; 2678 ieee->rate = 22; 2679 } 2680 2681 ieee->current_network.qos_data.supported = 0; 2682 ieee->SetWirelessMode(ieee->dev, IEEE_G); 2683 ieee->current_network.mode = ieee->mode; 2684 ieee->current_network.atim_window = 0; 2685 ieee->current_network.capability = WLAN_CAPABILITY_IBSS; 2686 } 2687 2688 netdev_info(ieee->dev, "%s(): ieee->mode = %d\n", __func__, ieee->mode); 2689 if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G)) 2690 HTUseDefaultSetting(ieee); 2691 else 2692 ieee->pHTInfo->bCurrentHTSupport = false; 2693 2694 ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS, 2695 (u8 *)(&ieee->state)); 2696 2697 ieee->state = RTLLIB_LINKED; 2698 ieee->link_change(ieee->dev); 2699 2700 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 2701 if (ieee->LedControlHandler != NULL) 2702 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK); 2703 2704 rtllib_start_send_beacons(ieee); 2705 2706 notify_wx_assoc_event(ieee); 2707 2708 if (ieee->data_hard_resume) 2709 ieee->data_hard_resume(ieee->dev); 2710 2711 netif_carrier_on(ieee->dev); 2712 2713 up(&ieee->wx_sem); 2714} 2715 2716inline void rtllib_start_ibss(struct rtllib_device *ieee) 2717{ 2718 queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, 2719 msecs_to_jiffies(150)); 2720} 2721 2722/* this is called only in user context, with wx_sem held */ 2723static void rtllib_start_bss(struct rtllib_device *ieee) 2724{ 2725 unsigned long flags; 2726 2727 if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) { 2728 if (!ieee->bGlobalDomain) 2729 return; 2730 } 2731 /* check if we have already found the net we 2732 * are interested in (if any). 2733 * if not (we are disassociated and we are not 2734 * in associating / authenticating phase) start the background scanning. 2735 */ 2736 rtllib_softmac_check_all_nets(ieee); 2737 2738 /* ensure no-one start an associating process (thus setting 2739 * the ieee->state to rtllib_ASSOCIATING) while we 2740 * have just checked it and we are going to enable scan. 2741 * The rtllib_new_net function is always called with 2742 * lock held (from both rtllib_softmac_check_all_nets and 2743 * the rx path), so we cannot be in the middle of such function 2744 */ 2745 spin_lock_irqsave(&ieee->lock, flags); 2746 2747 if (ieee->state == RTLLIB_NOLINK) 2748 rtllib_start_scan(ieee); 2749 spin_unlock_irqrestore(&ieee->lock, flags); 2750} 2751 2752static void rtllib_link_change_wq(void *data) 2753{ 2754 struct rtllib_device *ieee = container_of_dwork_rsl(data, 2755 struct rtllib_device, link_change_wq); 2756 ieee->link_change(ieee->dev); 2757} 2758/* called only in userspace context */ 2759void rtllib_disassociate(struct rtllib_device *ieee) 2760{ 2761 netif_carrier_off(ieee->dev); 2762 if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE) 2763 rtllib_reset_queue(ieee); 2764 2765 if (ieee->data_hard_stop) 2766 ieee->data_hard_stop(ieee->dev); 2767 if (IS_DOT11D_ENABLE(ieee)) 2768 Dot11d_Reset(ieee); 2769 ieee->state = RTLLIB_NOLINK; 2770 ieee->is_set_key = false; 2771 ieee->wap_set = 0; 2772 2773 queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0); 2774 2775 notify_wx_assoc_event(ieee); 2776} 2777 2778static void rtllib_associate_retry_wq(void *data) 2779{ 2780 struct rtllib_device *ieee = container_of_dwork_rsl(data, 2781 struct rtllib_device, associate_retry_wq); 2782 unsigned long flags; 2783 2784 down(&ieee->wx_sem); 2785 if (!ieee->proto_started) 2786 goto exit; 2787 2788 if (ieee->state != RTLLIB_ASSOCIATING_RETRY) 2789 goto exit; 2790 2791 /* until we do not set the state to RTLLIB_NOLINK 2792 * there are no possibility to have someone else trying 2793 * to start an association procedure (we get here with 2794 * ieee->state = RTLLIB_ASSOCIATING). 2795 * When we set the state to RTLLIB_NOLINK it is possible 2796 * that the RX path run an attempt to associate, but 2797 * both rtllib_softmac_check_all_nets and the 2798 * RX path works with ieee->lock held so there are no 2799 * problems. If we are still disassociated then start a scan. 2800 * the lock here is necessary to ensure no one try to start 2801 * an association procedure when we have just checked the 2802 * state and we are going to start the scan. 2803 */ 2804 ieee->beinretry = true; 2805 ieee->state = RTLLIB_NOLINK; 2806 2807 rtllib_softmac_check_all_nets(ieee); 2808 2809 spin_lock_irqsave(&ieee->lock, flags); 2810 2811 if (ieee->state == RTLLIB_NOLINK) 2812 rtllib_start_scan(ieee); 2813 spin_unlock_irqrestore(&ieee->lock, flags); 2814 2815 ieee->beinretry = false; 2816exit: 2817 up(&ieee->wx_sem); 2818} 2819 2820static struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee) 2821{ 2822 const u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 2823 2824 struct sk_buff *skb; 2825 struct rtllib_probe_response *b; 2826 2827 skb = rtllib_probe_resp(ieee, broadcast_addr); 2828 2829 if (!skb) 2830 return NULL; 2831 2832 b = (struct rtllib_probe_response *) skb->data; 2833 b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON); 2834 2835 return skb; 2836 2837} 2838 2839struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee) 2840{ 2841 struct sk_buff *skb; 2842 struct rtllib_probe_response *b; 2843 2844 skb = rtllib_get_beacon_(ieee); 2845 if (!skb) 2846 return NULL; 2847 2848 b = (struct rtllib_probe_response *) skb->data; 2849 b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 2850 2851 if (ieee->seq_ctrl[0] == 0xFFF) 2852 ieee->seq_ctrl[0] = 0; 2853 else 2854 ieee->seq_ctrl[0]++; 2855 2856 return skb; 2857} 2858EXPORT_SYMBOL(rtllib_get_beacon); 2859 2860void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag, 2861 u8 shutdown) 2862{ 2863 rtllib_stop_scan_syncro(ieee); 2864 down(&ieee->wx_sem); 2865 rtllib_stop_protocol(ieee, shutdown); 2866 up(&ieee->wx_sem); 2867} 2868EXPORT_SYMBOL(rtllib_softmac_stop_protocol); 2869 2870 2871void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown) 2872{ 2873 if (!ieee->proto_started) 2874 return; 2875 2876 if (shutdown) { 2877 ieee->proto_started = 0; 2878 ieee->proto_stoppping = 1; 2879 if (ieee->rtllib_ips_leave != NULL) 2880 ieee->rtllib_ips_leave(ieee->dev); 2881 } 2882 2883 rtllib_stop_send_beacons(ieee); 2884 del_timer_sync(&ieee->associate_timer); 2885 cancel_delayed_work(&ieee->associate_retry_wq); 2886 cancel_delayed_work(&ieee->start_ibss_wq); 2887 cancel_delayed_work(&ieee->link_change_wq); 2888 rtllib_stop_scan(ieee); 2889 2890 if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED) 2891 ieee->state = RTLLIB_NOLINK; 2892 2893 if (ieee->state == RTLLIB_LINKED) { 2894 if (ieee->iw_mode == IW_MODE_INFRA) 2895 SendDisassociation(ieee, 1, WLAN_REASON_DEAUTH_LEAVING); 2896 rtllib_disassociate(ieee); 2897 } 2898 2899 if (shutdown) { 2900 RemoveAllTS(ieee); 2901 ieee->proto_stoppping = 0; 2902 } 2903 kfree(ieee->assocreq_ies); 2904 ieee->assocreq_ies = NULL; 2905 ieee->assocreq_ies_len = 0; 2906 kfree(ieee->assocresp_ies); 2907 ieee->assocresp_ies = NULL; 2908 ieee->assocresp_ies_len = 0; 2909} 2910 2911void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag) 2912{ 2913 down(&ieee->wx_sem); 2914 rtllib_start_protocol(ieee); 2915 up(&ieee->wx_sem); 2916} 2917EXPORT_SYMBOL(rtllib_softmac_start_protocol); 2918 2919void rtllib_start_protocol(struct rtllib_device *ieee) 2920{ 2921 short ch = 0; 2922 int i = 0; 2923 2924 rtllib_update_active_chan_map(ieee); 2925 2926 if (ieee->proto_started) 2927 return; 2928 2929 ieee->proto_started = 1; 2930 2931 if (ieee->current_network.channel == 0) { 2932 do { 2933 ch++; 2934 if (ch > MAX_CHANNEL_NUMBER) 2935 return; /* no channel found */ 2936 } while (!ieee->active_channel_map[ch]); 2937 ieee->current_network.channel = ch; 2938 } 2939 2940 if (ieee->current_network.beacon_interval == 0) 2941 ieee->current_network.beacon_interval = 100; 2942 2943 for (i = 0; i < 17; i++) { 2944 ieee->last_rxseq_num[i] = -1; 2945 ieee->last_rxfrag_num[i] = -1; 2946 ieee->last_packet_time[i] = 0; 2947 } 2948 2949 if (ieee->UpdateBeaconInterruptHandler) 2950 ieee->UpdateBeaconInterruptHandler(ieee->dev, false); 2951 2952 ieee->wmm_acm = 0; 2953 /* if the user set the MAC of the ad-hoc cell and then 2954 * switch to managed mode, shall we make sure that association 2955 * attempts does not fail just because the user provide the essid 2956 * and the nic is still checking for the AP MAC ?? 2957 */ 2958 if (ieee->iw_mode == IW_MODE_INFRA) { 2959 rtllib_start_bss(ieee); 2960 } else if (ieee->iw_mode == IW_MODE_ADHOC) { 2961 if (ieee->UpdateBeaconInterruptHandler) 2962 ieee->UpdateBeaconInterruptHandler(ieee->dev, true); 2963 2964 rtllib_start_ibss(ieee); 2965 2966 } else if (ieee->iw_mode == IW_MODE_MASTER) { 2967 rtllib_start_master_bss(ieee); 2968 } else if (ieee->iw_mode == IW_MODE_MONITOR) { 2969 rtllib_start_monitor_mode(ieee); 2970 } 2971} 2972 2973void rtllib_softmac_init(struct rtllib_device *ieee) 2974{ 2975 int i; 2976 2977 memset(&ieee->current_network, 0, sizeof(struct rtllib_network)); 2978 2979 ieee->state = RTLLIB_NOLINK; 2980 for (i = 0; i < 5; i++) 2981 ieee->seq_ctrl[i] = 0; 2982 ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC); 2983 if (!ieee->pDot11dInfo) 2984 netdev_err(ieee->dev, "Can't alloc memory for DOT11D\n"); 2985 ieee->LinkDetectInfo.SlotIndex = 0; 2986 ieee->LinkDetectInfo.SlotNum = 2; 2987 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0; 2988 ieee->LinkDetectInfo.NumRecvDataInPeriod = 0; 2989 ieee->LinkDetectInfo.NumTxOkInPeriod = 0; 2990 ieee->LinkDetectInfo.NumRxOkInPeriod = 0; 2991 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0; 2992 ieee->bIsAggregateFrame = false; 2993 ieee->assoc_id = 0; 2994 ieee->queue_stop = 0; 2995 ieee->scanning_continue = 0; 2996 ieee->softmac_features = 0; 2997 ieee->wap_set = 0; 2998 ieee->ssid_set = 0; 2999 ieee->proto_started = 0; 3000 ieee->proto_stoppping = 0; 3001 ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE; 3002 ieee->rate = 22; 3003 ieee->ps = RTLLIB_PS_DISABLED; 3004 ieee->sta_sleep = LPS_IS_WAKE; 3005 3006 ieee->Regdot11HTOperationalRateSet[0] = 0xff; 3007 ieee->Regdot11HTOperationalRateSet[1] = 0xff; 3008 ieee->Regdot11HTOperationalRateSet[4] = 0x01; 3009 3010 ieee->Regdot11TxHTOperationalRateSet[0] = 0xff; 3011 ieee->Regdot11TxHTOperationalRateSet[1] = 0xff; 3012 ieee->Regdot11TxHTOperationalRateSet[4] = 0x01; 3013 3014 ieee->FirstIe_InScan = false; 3015 ieee->actscanning = false; 3016 ieee->beinretry = false; 3017 ieee->is_set_key = false; 3018 init_mgmt_queue(ieee); 3019 3020 ieee->tx_pending.txb = NULL; 3021 3022 setup_timer(&ieee->associate_timer, 3023 rtllib_associate_abort_cb, 3024 (unsigned long) ieee); 3025 3026 setup_timer(&ieee->beacon_timer, 3027 rtllib_send_beacon_cb, 3028 (unsigned long) ieee); 3029 3030 3031 ieee->wq = create_workqueue(DRV_NAME); 3032 3033 INIT_DELAYED_WORK_RSL(&ieee->link_change_wq, 3034 (void *)rtllib_link_change_wq, ieee); 3035 INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq, 3036 (void *)rtllib_start_ibss_wq, ieee); 3037 INIT_WORK_RSL(&ieee->associate_complete_wq, 3038 (void *)rtllib_associate_complete_wq, ieee); 3039 INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq, 3040 (void *)rtllib_associate_procedure_wq, ieee); 3041 INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq, 3042 (void *)rtllib_softmac_scan_wq, ieee); 3043 INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq, 3044 (void *)rtllib_associate_retry_wq, ieee); 3045 INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq, 3046 ieee); 3047 3048 sema_init(&ieee->wx_sem, 1); 3049 sema_init(&ieee->scan_sem, 1); 3050 sema_init(&ieee->ips_sem, 1); 3051 3052 spin_lock_init(&ieee->mgmt_tx_lock); 3053 spin_lock_init(&ieee->beacon_lock); 3054 3055 tasklet_init(&ieee->ps_task, 3056 (void(*)(unsigned long)) rtllib_sta_ps, 3057 (unsigned long)ieee); 3058 3059} 3060 3061void rtllib_softmac_free(struct rtllib_device *ieee) 3062{ 3063 down(&ieee->wx_sem); 3064 kfree(ieee->pDot11dInfo); 3065 ieee->pDot11dInfo = NULL; 3066 del_timer_sync(&ieee->associate_timer); 3067 3068 cancel_delayed_work(&ieee->associate_retry_wq); 3069 destroy_workqueue(ieee->wq); 3070 up(&ieee->wx_sem); 3071 tasklet_kill(&ieee->ps_task); 3072} 3073 3074/******************************************************** 3075 * Start of WPA code. * 3076 * this is stolen from the ipw2200 driver * 3077 ********************************************************/ 3078 3079 3080static int rtllib_wpa_enable(struct rtllib_device *ieee, int value) 3081{ 3082 /* This is called when wpa_supplicant loads and closes the driver 3083 * interface. 3084 */ 3085 netdev_info(ieee->dev, "%s WPA\n", value ? "enabling" : "disabling"); 3086 ieee->wpa_enabled = value; 3087 eth_zero_addr(ieee->ap_mac_addr); 3088 return 0; 3089} 3090 3091 3092static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie, 3093 int wpa_ie_len) 3094{ 3095 /* make sure WPA is enabled */ 3096 rtllib_wpa_enable(ieee, 1); 3097 3098 rtllib_disassociate(ieee); 3099} 3100 3101 3102static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason) 3103{ 3104 3105 int ret = 0; 3106 3107 switch (command) { 3108 case IEEE_MLME_STA_DEAUTH: 3109 break; 3110 3111 case IEEE_MLME_STA_DISASSOC: 3112 rtllib_disassociate(ieee); 3113 break; 3114 3115 default: 3116 netdev_info(ieee->dev, "Unknown MLME request: %d\n", command); 3117 ret = -EOPNOTSUPP; 3118 } 3119 3120 return ret; 3121} 3122 3123 3124static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee, 3125 struct ieee_param *param, int plen) 3126{ 3127 u8 *buf; 3128 3129 if (param->u.wpa_ie.len > MAX_WPA_IE_LEN || 3130 (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL)) 3131 return -EINVAL; 3132 3133 if (param->u.wpa_ie.len) { 3134 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len, 3135 GFP_KERNEL); 3136 if (buf == NULL) 3137 return -ENOMEM; 3138 3139 kfree(ieee->wpa_ie); 3140 ieee->wpa_ie = buf; 3141 ieee->wpa_ie_len = param->u.wpa_ie.len; 3142 } else { 3143 kfree(ieee->wpa_ie); 3144 ieee->wpa_ie = NULL; 3145 ieee->wpa_ie_len = 0; 3146 } 3147 3148 rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len); 3149 return 0; 3150} 3151 3152#define AUTH_ALG_OPEN_SYSTEM 0x1 3153#define AUTH_ALG_SHARED_KEY 0x2 3154#define AUTH_ALG_LEAP 0x4 3155static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value) 3156{ 3157 3158 struct rtllib_security sec = { 3159 .flags = SEC_AUTH_MODE, 3160 }; 3161 3162 if (value & AUTH_ALG_SHARED_KEY) { 3163 sec.auth_mode = WLAN_AUTH_SHARED_KEY; 3164 ieee->open_wep = 0; 3165 ieee->auth_mode = 1; 3166 } else if (value & AUTH_ALG_OPEN_SYSTEM) { 3167 sec.auth_mode = WLAN_AUTH_OPEN; 3168 ieee->open_wep = 1; 3169 ieee->auth_mode = 0; 3170 } else if (value & AUTH_ALG_LEAP) { 3171 sec.auth_mode = WLAN_AUTH_LEAP >> 6; 3172 ieee->open_wep = 1; 3173 ieee->auth_mode = 2; 3174 } 3175 3176 3177 if (ieee->set_security) 3178 ieee->set_security(ieee->dev, &sec); 3179 3180 return 0; 3181} 3182 3183static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value) 3184{ 3185 int ret = 0; 3186 unsigned long flags; 3187 3188 switch (name) { 3189 case IEEE_PARAM_WPA_ENABLED: 3190 ret = rtllib_wpa_enable(ieee, value); 3191 break; 3192 3193 case IEEE_PARAM_TKIP_COUNTERMEASURES: 3194 ieee->tkip_countermeasures = value; 3195 break; 3196 3197 case IEEE_PARAM_DROP_UNENCRYPTED: 3198 { 3199 /* HACK: 3200 * 3201 * wpa_supplicant calls set_wpa_enabled when the driver 3202 * is loaded and unloaded, regardless of if WPA is being 3203 * used. No other calls are made which can be used to 3204 * determine if encryption will be used or not prior to 3205 * association being expected. If encryption is not being 3206 * used, drop_unencrypted is set to false, else true -- we 3207 * can use this to determine if the CAP_PRIVACY_ON bit should 3208 * be set. 3209 */ 3210 struct rtllib_security sec = { 3211 .flags = SEC_ENABLED, 3212 .enabled = value, 3213 }; 3214 ieee->drop_unencrypted = value; 3215 /* We only change SEC_LEVEL for open mode. Others 3216 * are set by ipw_wpa_set_encryption. 3217 */ 3218 if (!value) { 3219 sec.flags |= SEC_LEVEL; 3220 sec.level = SEC_LEVEL_0; 3221 } else { 3222 sec.flags |= SEC_LEVEL; 3223 sec.level = SEC_LEVEL_1; 3224 } 3225 if (ieee->set_security) 3226 ieee->set_security(ieee->dev, &sec); 3227 break; 3228 } 3229 3230 case IEEE_PARAM_PRIVACY_INVOKED: 3231 ieee->privacy_invoked = value; 3232 break; 3233 3234 case IEEE_PARAM_AUTH_ALGS: 3235 ret = rtllib_wpa_set_auth_algs(ieee, value); 3236 break; 3237 3238 case IEEE_PARAM_IEEE_802_1X: 3239 ieee->ieee802_1x = value; 3240 break; 3241 case IEEE_PARAM_WPAX_SELECT: 3242 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags); 3243 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags); 3244 break; 3245 3246 default: 3247 netdev_info(ieee->dev, "Unknown WPA param: %d\n", name); 3248 ret = -EOPNOTSUPP; 3249 } 3250 3251 return ret; 3252} 3253 3254/* implementation borrowed from hostap driver */ 3255static int rtllib_wpa_set_encryption(struct rtllib_device *ieee, 3256 struct ieee_param *param, int param_len, 3257 u8 is_mesh) 3258{ 3259 int ret = 0; 3260 struct lib80211_crypto_ops *ops; 3261 struct lib80211_crypt_data **crypt; 3262 3263 struct rtllib_security sec = { 3264 .flags = 0, 3265 }; 3266 3267 param->u.crypt.err = 0; 3268 param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0'; 3269 3270 if (param_len != 3271 (int) ((char *) param->u.crypt.key - (char *) param) + 3272 param->u.crypt.key_len) { 3273 netdev_info(ieee->dev, "Len mismatch %d, %d\n", param_len, 3274 param->u.crypt.key_len); 3275 return -EINVAL; 3276 } 3277 if (is_broadcast_ether_addr(param->sta_addr)) { 3278 if (param->u.crypt.idx >= NUM_WEP_KEYS) 3279 return -EINVAL; 3280 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx]; 3281 } else { 3282 return -EINVAL; 3283 } 3284 3285 if (strcmp(param->u.crypt.alg, "none") == 0) { 3286 if (crypt) { 3287 sec.enabled = 0; 3288 sec.level = SEC_LEVEL_0; 3289 sec.flags |= SEC_ENABLED | SEC_LEVEL; 3290 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); 3291 } 3292 goto done; 3293 } 3294 sec.enabled = 1; 3295 sec.flags |= SEC_ENABLED; 3296 3297 /* IPW HW cannot build TKIP MIC, host decryption still needed. */ 3298 if (!(ieee->host_encrypt || ieee->host_decrypt) && 3299 strcmp(param->u.crypt.alg, "R-TKIP")) 3300 goto skip_host_crypt; 3301 3302 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3303 if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) { 3304 request_module("rtllib_crypt_wep"); 3305 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3306 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) { 3307 request_module("rtllib_crypt_tkip"); 3308 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3309 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) { 3310 request_module("rtllib_crypt_ccmp"); 3311 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3312 } 3313 if (ops == NULL) { 3314 netdev_info(ieee->dev, "unknown crypto alg '%s'\n", 3315 param->u.crypt.alg); 3316 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG; 3317 ret = -EINVAL; 3318 goto done; 3319 } 3320 if (*crypt == NULL || (*crypt)->ops != ops) { 3321 struct lib80211_crypt_data *new_crypt; 3322 3323 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); 3324 3325 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL); 3326 if (new_crypt == NULL) { 3327 ret = -ENOMEM; 3328 goto done; 3329 } 3330 new_crypt->ops = ops; 3331 if (new_crypt->ops) 3332 new_crypt->priv = 3333 new_crypt->ops->init(param->u.crypt.idx); 3334 3335 if (new_crypt->priv == NULL) { 3336 kfree(new_crypt); 3337 param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED; 3338 ret = -EINVAL; 3339 goto done; 3340 } 3341 3342 *crypt = new_crypt; 3343 } 3344 3345 if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key && 3346 (*crypt)->ops->set_key(param->u.crypt.key, 3347 param->u.crypt.key_len, param->u.crypt.seq, 3348 (*crypt)->priv) < 0) { 3349 netdev_info(ieee->dev, "key setting failed\n"); 3350 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED; 3351 ret = -EINVAL; 3352 goto done; 3353 } 3354 3355 skip_host_crypt: 3356 if (param->u.crypt.set_tx) { 3357 ieee->crypt_info.tx_keyidx = param->u.crypt.idx; 3358 sec.active_key = param->u.crypt.idx; 3359 sec.flags |= SEC_ACTIVE_KEY; 3360 } else 3361 sec.flags &= ~SEC_ACTIVE_KEY; 3362 3363 if (param->u.crypt.alg != NULL) { 3364 memcpy(sec.keys[param->u.crypt.idx], 3365 param->u.crypt.key, 3366 param->u.crypt.key_len); 3367 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len; 3368 sec.flags |= (1 << param->u.crypt.idx); 3369 3370 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) { 3371 sec.flags |= SEC_LEVEL; 3372 sec.level = SEC_LEVEL_1; 3373 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) { 3374 sec.flags |= SEC_LEVEL; 3375 sec.level = SEC_LEVEL_2; 3376 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) { 3377 sec.flags |= SEC_LEVEL; 3378 sec.level = SEC_LEVEL_3; 3379 } 3380 } 3381 done: 3382 if (ieee->set_security) 3383 ieee->set_security(ieee->dev, &sec); 3384 3385 /* Do not reset port if card is in Managed mode since resetting will 3386 * generate new IEEE 802.11 authentication which may end up in looping 3387 * with IEEE 802.1X. If your hardware requires a reset after WEP 3388 * configuration (for example... Prism2), implement the reset_port in 3389 * the callbacks structures used to initialize the 802.11 stack. 3390 */ 3391 if (ieee->reset_on_keychange && 3392 ieee->iw_mode != IW_MODE_INFRA && 3393 ieee->reset_port && 3394 ieee->reset_port(ieee->dev)) { 3395 netdev_info(ieee->dev, "reset_port failed\n"); 3396 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED; 3397 return -EINVAL; 3398 } 3399 3400 return ret; 3401} 3402 3403inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon, 3404 struct rtllib_device *ieee, u16 asRsn) 3405{ 3406 struct sk_buff *skb; 3407 struct rtllib_disauth *disauth; 3408 int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom; 3409 3410 skb = dev_alloc_skb(len); 3411 if (!skb) 3412 return NULL; 3413 3414 skb_reserve(skb, ieee->tx_headroom); 3415 3416 disauth = (struct rtllib_disauth *) skb_put(skb, 3417 sizeof(struct rtllib_disauth)); 3418 disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH); 3419 disauth->header.duration_id = 0; 3420 3421 ether_addr_copy(disauth->header.addr1, beacon->bssid); 3422 ether_addr_copy(disauth->header.addr2, ieee->dev->dev_addr); 3423 ether_addr_copy(disauth->header.addr3, beacon->bssid); 3424 3425 disauth->reason = cpu_to_le16(asRsn); 3426 return skb; 3427} 3428 3429inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon, 3430 struct rtllib_device *ieee, u16 asRsn) 3431{ 3432 struct sk_buff *skb; 3433 struct rtllib_disassoc *disass; 3434 int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom; 3435 3436 skb = dev_alloc_skb(len); 3437 3438 if (!skb) 3439 return NULL; 3440 3441 skb_reserve(skb, ieee->tx_headroom); 3442 3443 disass = (struct rtllib_disassoc *) skb_put(skb, 3444 sizeof(struct rtllib_disassoc)); 3445 disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC); 3446 disass->header.duration_id = 0; 3447 3448 ether_addr_copy(disass->header.addr1, beacon->bssid); 3449 ether_addr_copy(disass->header.addr2, ieee->dev->dev_addr); 3450 ether_addr_copy(disass->header.addr3, beacon->bssid); 3451 3452 disass->reason = cpu_to_le16(asRsn); 3453 return skb; 3454} 3455 3456void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn) 3457{ 3458 struct rtllib_network *beacon = &ieee->current_network; 3459 struct sk_buff *skb; 3460 3461 if (deauth) 3462 skb = rtllib_disauth_skb(beacon, ieee, asRsn); 3463 else 3464 skb = rtllib_disassociate_skb(beacon, ieee, asRsn); 3465 3466 if (skb) 3467 softmac_mgmt_xmit(skb, ieee); 3468} 3469 3470u8 rtllib_ap_sec_type(struct rtllib_device *ieee) 3471{ 3472 static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04}; 3473 static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04}; 3474 int wpa_ie_len = ieee->wpa_ie_len; 3475 struct lib80211_crypt_data *crypt; 3476 int encrypt; 3477 3478 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 3479 encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY) 3480 || (ieee->host_encrypt && crypt && crypt->ops && 3481 (strcmp(crypt->ops->name, "R-WEP") == 0)); 3482 3483 /* simply judge */ 3484 if (encrypt && (wpa_ie_len == 0)) { 3485 return SEC_ALG_WEP; 3486 } else if ((wpa_ie_len != 0)) { 3487 if (((ieee->wpa_ie[0] == 0xdd) && 3488 (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) || 3489 ((ieee->wpa_ie[0] == 0x30) && 3490 (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4)))) 3491 return SEC_ALG_CCMP; 3492 else 3493 return SEC_ALG_TKIP; 3494 } else { 3495 return SEC_ALG_NONE; 3496 } 3497} 3498 3499int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p, 3500 u8 is_mesh) 3501{ 3502 struct ieee_param *param; 3503 int ret = 0; 3504 3505 down(&ieee->wx_sem); 3506 3507 if (p->length < sizeof(struct ieee_param) || !p->pointer) { 3508 ret = -EINVAL; 3509 goto out; 3510 } 3511 3512 param = memdup_user(p->pointer, p->length); 3513 if (IS_ERR(param)) { 3514 ret = PTR_ERR(param); 3515 goto out; 3516 } 3517 3518 switch (param->cmd) { 3519 case IEEE_CMD_SET_WPA_PARAM: 3520 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name, 3521 param->u.wpa_param.value); 3522 break; 3523 3524 case IEEE_CMD_SET_WPA_IE: 3525 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length); 3526 break; 3527 3528 case IEEE_CMD_SET_ENCRYPTION: 3529 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0); 3530 break; 3531 3532 case IEEE_CMD_MLME: 3533 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command, 3534 param->u.mlme.reason_code); 3535 break; 3536 3537 default: 3538 netdev_info(ieee->dev, "Unknown WPA supplicant request: %d\n", 3539 param->cmd); 3540 ret = -EOPNOTSUPP; 3541 break; 3542 } 3543 3544 if (ret == 0 && copy_to_user(p->pointer, param, p->length)) 3545 ret = -EFAULT; 3546 3547 kfree(param); 3548out: 3549 up(&ieee->wx_sem); 3550 3551 return ret; 3552} 3553EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl); 3554 3555static void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib) 3556{ 3557 u8 OpMode; 3558 u8 i; 3559 bool bFilterOutNonAssociatedBSSID = false; 3560 3561 rtllib->state = RTLLIB_NOLINK; 3562 3563 for (i = 0; i < 6; i++) 3564 rtllib->current_network.bssid[i] = 0x55; 3565 3566 rtllib->OpMode = RT_OP_MODE_NO_LINK; 3567 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID, 3568 rtllib->current_network.bssid); 3569 OpMode = RT_OP_MODE_NO_LINK; 3570 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode); 3571 rtllib_stop_send_beacons(rtllib); 3572 3573 bFilterOutNonAssociatedBSSID = false; 3574 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID, 3575 (u8 *)(&bFilterOutNonAssociatedBSSID)); 3576 notify_wx_assoc_event(rtllib); 3577 3578} 3579 3580static void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, 3581 u8 *asSta, u8 asRsn) 3582{ 3583 u8 i; 3584 u8 OpMode; 3585 3586 RemovePeerTS(rtllib, asSta); 3587 3588 if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) { 3589 rtllib->state = RTLLIB_NOLINK; 3590 3591 for (i = 0; i < 6; i++) 3592 rtllib->current_network.bssid[i] = 0x22; 3593 OpMode = RT_OP_MODE_NO_LINK; 3594 rtllib->OpMode = RT_OP_MODE_NO_LINK; 3595 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, 3596 (u8 *)(&OpMode)); 3597 rtllib_disassociate(rtllib); 3598 3599 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID, 3600 rtllib->current_network.bssid); 3601 3602 } 3603 3604} 3605 3606static void 3607rtllib_MgntDisconnectAP( 3608 struct rtllib_device *rtllib, 3609 u8 asRsn 3610) 3611{ 3612 bool bFilterOutNonAssociatedBSSID = false; 3613 3614 bFilterOutNonAssociatedBSSID = false; 3615 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID, 3616 (u8 *)(&bFilterOutNonAssociatedBSSID)); 3617 rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid, 3618 asRsn); 3619 3620 rtllib->state = RTLLIB_NOLINK; 3621} 3622 3623bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn) 3624{ 3625 if (rtllib->ps != RTLLIB_PS_DISABLED) 3626 rtllib->sta_wake_up(rtllib->dev); 3627 3628 if (rtllib->state == RTLLIB_LINKED) { 3629 if (rtllib->iw_mode == IW_MODE_ADHOC) 3630 rtllib_MgntDisconnectIBSS(rtllib); 3631 if (rtllib->iw_mode == IW_MODE_INFRA) 3632 rtllib_MgntDisconnectAP(rtllib, asRsn); 3633 3634 } 3635 3636 return true; 3637} 3638EXPORT_SYMBOL(rtllib_MgntDisconnect); 3639 3640void notify_wx_assoc_event(struct rtllib_device *ieee) 3641{ 3642 union iwreq_data wrqu; 3643 3644 if (ieee->cannot_notify) 3645 return; 3646 3647 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 3648 if (ieee->state == RTLLIB_LINKED) 3649 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid, 3650 ETH_ALEN); 3651 else { 3652 3653 netdev_info(ieee->dev, "%s(): Tell user space disconnected\n", 3654 __func__); 3655 eth_zero_addr(wrqu.ap_addr.sa_data); 3656 } 3657 wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL); 3658} 3659EXPORT_SYMBOL(notify_wx_assoc_event); 3660