1/* IEEE 802.11 SoftMAC layer 2 * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com> 3 * 4 * Mostly extracted from the rtl8180-sa2400 driver for the 5 * in-kernel generic ieee802.11 stack. 6 * 7 * Few lines might be stolen from other part of the rtllib 8 * stack. Copyright who own it's copyright 9 * 10 * WPA code stolen from the ipw2200 driver. 11 * Copyright who own it's copyright. 12 * 13 * released under the GPL 14 */ 15 16 17#include "rtllib.h" 18 19#include <linux/random.h> 20#include <linux/delay.h> 21#include <linux/uaccess.h> 22#include <linux/etherdevice.h> 23#include "dot11d.h" 24 25short rtllib_is_54g(struct rtllib_network *net) 26{ 27 return (net->rates_ex_len > 0) || (net->rates_len > 4); 28} 29 30short rtllib_is_shortslot(const struct rtllib_network *net) 31{ 32 return net->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME; 33} 34 35/* returns the total length needed for placing the RATE MFIE 36 * tag and the EXTENDED RATE MFIE tag if needed. 37 * It encludes two bytes per tag for the tag itself and its len 38 */ 39static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee) 40{ 41 unsigned int rate_len = 0; 42 43 if (ieee->modulation & RTLLIB_CCK_MODULATION) 44 rate_len = RTLLIB_CCK_RATE_LEN + 2; 45 46 if (ieee->modulation & RTLLIB_OFDM_MODULATION) 47 48 rate_len += RTLLIB_OFDM_RATE_LEN + 2; 49 50 return rate_len; 51} 52 53/* place the MFIE rate, tag to the memory (double) pointed. 54 * Then it updates the pointer so that 55 * it points after the new MFIE tag added. 56 */ 57static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p) 58{ 59 u8 *tag = *tag_p; 60 61 if (ieee->modulation & RTLLIB_CCK_MODULATION) { 62 *tag++ = MFIE_TYPE_RATES; 63 *tag++ = 4; 64 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB; 65 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB; 66 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB; 67 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB; 68 } 69 70 /* We may add an option for custom rates that specific HW 71 * might support */ 72 *tag_p = tag; 73} 74 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 *tag_p = tag; 94} 95 96static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p) 97{ 98 u8 *tag = *tag_p; 99 100 *tag++ = MFIE_TYPE_GENERIC; 101 *tag++ = 7; 102 *tag++ = 0x00; 103 *tag++ = 0x50; 104 *tag++ = 0xf2; 105 *tag++ = 0x02; 106 *tag++ = 0x00; 107 *tag++ = 0x01; 108 *tag++ = MAX_SP_Len; 109 *tag_p = tag; 110} 111 112void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p) 113{ 114 u8 *tag = *tag_p; 115 116 *tag++ = MFIE_TYPE_GENERIC; 117 *tag++ = 7; 118 *tag++ = 0x00; 119 *tag++ = 0xe0; 120 *tag++ = 0x4c; 121 *tag++ = 0x01; 122 *tag++ = 0x02; 123 *tag++ = 0x11; 124 *tag++ = 0x00; 125 126 *tag_p = tag; 127 printk(KERN_ALERT "This is enable turbo mode IE process\n"); 128} 129 130static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb) 131{ 132 int nh; 133 134 nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM; 135 136/* 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 struct sk_buff *dequeue_mgmt(struct rtllib_device *ieee) 149{ 150 struct sk_buff *ret; 151 152 if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head) 153 return NULL; 154 155 ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail]; 156 157 ieee->mgmt_queue_tail = 158 (ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM; 159 160 return ret; 161} 162 163static void init_mgmt_queue(struct rtllib_device *ieee) 164{ 165 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0; 166} 167 168 169u8 170MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee) 171{ 172 u16 i; 173 u8 QueryRate = 0; 174 u8 BasicRate; 175 176 177 for (i = 0; i < ieee->current_network.rates_len; i++) { 178 BasicRate = ieee->current_network.rates[i]&0x7F; 179 if (!rtllib_is_cck_rate(BasicRate)) { 180 if (QueryRate == 0) { 181 QueryRate = BasicRate; 182 } else { 183 if (BasicRate < QueryRate) 184 QueryRate = BasicRate; 185 } 186 } 187 } 188 189 if (QueryRate == 0) { 190 QueryRate = 12; 191 printk(KERN_INFO "No BasicRate found!!\n"); 192 } 193 return QueryRate; 194} 195 196u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee) 197{ 198 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; 199 u8 rate; 200 201 if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M) 202 rate = 0x0c; 203 else 204 rate = ieee->basic_rate & 0x7f; 205 206 if (rate == 0) { 207 if (ieee->mode == IEEE_A || 208 ieee->mode == IEEE_N_5G || 209 (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK)) 210 rate = 0x0c; 211 else 212 rate = 0x02; 213 } 214 215 return rate; 216} 217 218inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee) 219{ 220 unsigned long flags; 221 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE; 222 struct rtllib_hdr_3addr *header = 223 (struct rtllib_hdr_3addr *) skb->data; 224 225 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8); 226 227 spin_lock_irqsave(&ieee->lock, flags); 228 229 /* called with 2nd param 0, no mgmt lock required */ 230 rtllib_sta_wakeup(ieee, 0); 231 232 if (le16_to_cpu(header->frame_ctl) == RTLLIB_STYPE_BEACON) 233 tcb_desc->queue_index = BEACON_QUEUE; 234 else 235 tcb_desc->queue_index = MGNT_QUEUE; 236 237 if (ieee->disable_mgnt_queue) 238 tcb_desc->queue_index = HIGH_QUEUE; 239 240 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee); 241 tcb_desc->RATRIndex = 7; 242 tcb_desc->bTxDisableRateFallBack = 1; 243 tcb_desc->bTxUseDriverAssingedRate = 1; 244 if (single) { 245 if (ieee->queue_stop) { 246 enqueue_mgmt(ieee, skb); 247 } else { 248 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4); 249 250 if (ieee->seq_ctrl[0] == 0xFFF) 251 ieee->seq_ctrl[0] = 0; 252 else 253 ieee->seq_ctrl[0]++; 254 255 /* avoid watchdog triggers */ 256 ieee->softmac_data_hard_start_xmit(skb, ieee->dev, 257 ieee->basic_rate); 258 } 259 260 spin_unlock_irqrestore(&ieee->lock, flags); 261 } else { 262 spin_unlock_irqrestore(&ieee->lock, flags); 263 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags); 264 265 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 266 267 if (ieee->seq_ctrl[0] == 0xFFF) 268 ieee->seq_ctrl[0] = 0; 269 else 270 ieee->seq_ctrl[0]++; 271 272 /* check whether the managed packet queued greater than 5 */ 273 if (!ieee->check_nic_enough_desc(ieee->dev, tcb_desc->queue_index) || 274 (skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) != 0) || 275 (ieee->queue_stop)) { 276 /* insert the skb packet to the management queue */ 277 /* as for the completion function, it does not need 278 * to check it any more. 279 * */ 280 printk(KERN_INFO "%s():insert to waitqueue, queue_index" 281 ":%d!\n", __func__, tcb_desc->queue_index); 282 skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index], 283 skb); 284 } else { 285 ieee->softmac_hard_start_xmit(skb, ieee->dev); 286 } 287 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags); 288 } 289} 290 291inline void softmac_ps_mgmt_xmit(struct sk_buff *skb, 292 struct rtllib_device *ieee) 293{ 294 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE; 295 struct rtllib_hdr_3addr *header = 296 (struct rtllib_hdr_3addr *) skb->data; 297 u16 fc, type, stype; 298 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8); 299 300 fc = le16_to_cpu(header->frame_ctl); 301 type = WLAN_FC_GET_TYPE(fc); 302 stype = WLAN_FC_GET_STYPE(fc); 303 304 305 if (stype != RTLLIB_STYPE_PSPOLL) 306 tcb_desc->queue_index = MGNT_QUEUE; 307 else 308 tcb_desc->queue_index = HIGH_QUEUE; 309 310 if (ieee->disable_mgnt_queue) 311 tcb_desc->queue_index = HIGH_QUEUE; 312 313 314 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee); 315 tcb_desc->RATRIndex = 7; 316 tcb_desc->bTxDisableRateFallBack = 1; 317 tcb_desc->bTxUseDriverAssingedRate = 1; 318 if (single) { 319 if (type != RTLLIB_FTYPE_CTL) { 320 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 321 322 if (ieee->seq_ctrl[0] == 0xFFF) 323 ieee->seq_ctrl[0] = 0; 324 else 325 ieee->seq_ctrl[0]++; 326 327 } 328 /* avoid watchdog triggers */ 329 ieee->softmac_data_hard_start_xmit(skb, ieee->dev, 330 ieee->basic_rate); 331 332 } else { 333 if (type != RTLLIB_FTYPE_CTL) { 334 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 335 336 if (ieee->seq_ctrl[0] == 0xFFF) 337 ieee->seq_ctrl[0] = 0; 338 else 339 ieee->seq_ctrl[0]++; 340 } 341 ieee->softmac_hard_start_xmit(skb, ieee->dev); 342 343 } 344} 345 346inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee) 347{ 348 unsigned int len, rate_len; 349 u8 *tag; 350 struct sk_buff *skb; 351 struct rtllib_probe_request *req; 352 353 len = ieee->current_network.ssid_len; 354 355 rate_len = rtllib_MFIE_rate_len(ieee); 356 357 skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) + 358 2 + len + rate_len + ieee->tx_headroom); 359 360 if (!skb) 361 return NULL; 362 363 skb_reserve(skb, ieee->tx_headroom); 364 365 req = (struct rtllib_probe_request *) skb_put(skb, 366 sizeof(struct rtllib_probe_request)); 367 req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ); 368 req->header.duration_id = 0; 369 370 memset(req->header.addr1, 0xff, ETH_ALEN); 371 memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 372 memset(req->header.addr3, 0xff, ETH_ALEN); 373 374 tag = (u8 *) skb_put(skb, len + 2 + rate_len); 375 376 *tag++ = MFIE_TYPE_SSID; 377 *tag++ = len; 378 memcpy(tag, ieee->current_network.ssid, len); 379 tag += len; 380 381 rtllib_MFIE_Brate(ieee, &tag); 382 rtllib_MFIE_Grate(ieee, &tag); 383 384 return skb; 385} 386 387struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee); 388 389static void rtllib_send_beacon(struct rtllib_device *ieee) 390{ 391 struct sk_buff *skb; 392 393 if (!ieee->ieee_up) 394 return; 395 skb = rtllib_get_beacon_(ieee); 396 397 if (skb) { 398 softmac_mgmt_xmit(skb, ieee); 399 ieee->softmac_stats.tx_beacons++; 400 } 401 402 if (ieee->beacon_txing && ieee->ieee_up) 403 mod_timer(&ieee->beacon_timer, jiffies + 404 (MSECS(ieee->current_network.beacon_interval - 5))); 405} 406 407 408static void rtllib_send_beacon_cb(unsigned long _ieee) 409{ 410 struct rtllib_device *ieee = 411 (struct rtllib_device *) _ieee; 412 unsigned long flags; 413 414 spin_lock_irqsave(&ieee->beacon_lock, flags); 415 rtllib_send_beacon(ieee); 416 spin_unlock_irqrestore(&ieee->beacon_lock, flags); 417} 418 419/* 420 * Description: 421 * Enable network monitor mode, all rx packets will be received. 422 */ 423void rtllib_EnableNetMonitorMode(struct net_device *dev, 424 bool bInitState) 425{ 426 struct rtllib_device *ieee = netdev_priv_rsl(dev); 427 428 printk(KERN_INFO "========>Enter Monitor Mode\n"); 429 430 ieee->AllowAllDestAddrHandler(dev, true, !bInitState); 431} 432 433 434/* 435 * Description: 436 * Disable network network monitor mode, only packets destinated to 437 * us will be received. 438 */ 439void rtllib_DisableNetMonitorMode(struct net_device *dev, 440 bool bInitState) 441{ 442 struct rtllib_device *ieee = netdev_priv_rsl(dev); 443 444 printk(KERN_INFO "========>Exit Monitor Mode\n"); 445 446 ieee->AllowAllDestAddrHandler(dev, false, !bInitState); 447} 448 449 450/* 451 * Description: 452 * This enables the specialized promiscuous mode required by Intel. 453 * In this mode, Intel intends to hear traffics from/to other STAs in the 454 * same BSS. Therefore we don't have to disable checking BSSID and we only need 455 * to allow all dest. BUT: if we enable checking BSSID then we can't recv 456 * packets from other STA. 457 */ 458void rtllib_EnableIntelPromiscuousMode(struct net_device *dev, 459 bool bInitState) 460{ 461 bool bFilterOutNonAssociatedBSSID = false; 462 463 struct rtllib_device *ieee = netdev_priv_rsl(dev); 464 465 printk(KERN_INFO "========>Enter Intel Promiscuous Mode\n"); 466 467 ieee->AllowAllDestAddrHandler(dev, true, !bInitState); 468 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID, 469 (u8 *)&bFilterOutNonAssociatedBSSID); 470 471 ieee->bNetPromiscuousMode = true; 472} 473EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode); 474 475 476/* 477 * Description: 478 * This disables the specialized promiscuous mode required by Intel. 479 * See MgntEnableIntelPromiscuousMode for detail. 480 */ 481void rtllib_DisableIntelPromiscuousMode(struct net_device *dev, 482 bool bInitState) 483{ 484 bool bFilterOutNonAssociatedBSSID = true; 485 486 struct rtllib_device *ieee = netdev_priv_rsl(dev); 487 488 printk(KERN_INFO "========>Exit Intel Promiscuous Mode\n"); 489 490 ieee->AllowAllDestAddrHandler(dev, false, !bInitState); 491 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID, 492 (u8 *)&bFilterOutNonAssociatedBSSID); 493 494 ieee->bNetPromiscuousMode = false; 495} 496EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode); 497 498static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh) 499{ 500 struct sk_buff *skb; 501 502 skb = rtllib_probe_req(ieee); 503 if (skb) { 504 softmac_mgmt_xmit(skb, ieee); 505 ieee->softmac_stats.tx_probe_rq++; 506 } 507} 508 509 510void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh) 511{ 512 if (ieee->active_scan && (ieee->softmac_features & 513 IEEE_SOFTMAC_PROBERQ)) { 514 rtllib_send_probe(ieee, 0); 515 rtllib_send_probe(ieee, 0); 516 } 517} 518 519static void rtllib_softmac_hint11d_wq(void *data) 520{ 521} 522 523void rtllib_update_active_chan_map(struct rtllib_device *ieee) 524{ 525 memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map, 526 MAX_CHANNEL_NUMBER+1); 527} 528 529/* this performs syncro scan blocking the caller until all channels 530 * in the allowed channel map has been checked. 531 */ 532void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh) 533{ 534 union iwreq_data wrqu; 535 short ch = 0; 536 537 rtllib_update_active_chan_map(ieee); 538 539 ieee->be_scan_inprogress = true; 540 541 down(&ieee->scan_sem); 542 543 while (1) { 544 do { 545 ch++; 546 if (ch > MAX_CHANNEL_NUMBER) 547 goto out; /* scan completed */ 548 } while (!ieee->active_channel_map[ch]); 549 550 /* this function can be called in two situations 551 * 1- We have switched to ad-hoc mode and we are 552 * performing a complete syncro scan before conclude 553 * there are no interesting cell and to create a 554 * new one. In this case the link state is 555 * RTLLIB_NOLINK until we found an interesting cell. 556 * If so the ieee8021_new_net, called by the RX path 557 * will set the state to RTLLIB_LINKED, so we stop 558 * scanning 559 * 2- We are linked and the root uses run iwlist scan. 560 * So we switch to RTLLIB_LINKED_SCANNING to remember 561 * that we are still logically linked (not interested in 562 * new network events, despite for updating the net list, 563 * but we are temporarly 'unlinked' as the driver shall 564 * not filter RX frames and the channel is changing. 565 * So the only situation in which are interested is to check 566 * if the state become LINKED because of the #1 situation 567 */ 568 569 if (ieee->state == RTLLIB_LINKED) 570 goto out; 571 if (ieee->sync_scan_hurryup) { 572 printk(KERN_INFO "============>sync_scan_hurryup out\n"); 573 goto out; 574 } 575 576 ieee->set_chan(ieee->dev, ch); 577 if (ieee->active_channel_map[ch] == 1) 578 rtllib_send_probe_requests(ieee, 0); 579 580 /* this prevent excessive time wait when we 581 * need to wait for a syncro scan to end.. 582 */ 583 msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME); 584 } 585out: 586 ieee->actscanning = false; 587 ieee->sync_scan_hurryup = 0; 588 589 if (ieee->state >= RTLLIB_LINKED) { 590 if (IS_DOT11D_ENABLE(ieee)) 591 DOT11D_ScanComplete(ieee); 592 } 593 up(&ieee->scan_sem); 594 595 ieee->be_scan_inprogress = false; 596 597 memset(&wrqu, 0, sizeof(wrqu)); 598 wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL); 599} 600 601static void rtllib_softmac_scan_wq(void *data) 602{ 603 struct rtllib_device *ieee = container_of_dwork_rsl(data, 604 struct rtllib_device, softmac_scan_wq); 605 u8 last_channel = ieee->current_network.channel; 606 607 rtllib_update_active_chan_map(ieee); 608 609 if (!ieee->ieee_up) 610 return; 611 if (rtllib_act_scanning(ieee, true)) 612 return; 613 614 down(&ieee->scan_sem); 615 616 if (ieee->eRFPowerState == eRfOff) { 617 printk(KERN_INFO "======>%s():rf state is eRfOff, return\n", 618 __func__); 619 goto out1; 620 } 621 622 do { 623 ieee->current_network.channel = 624 (ieee->current_network.channel + 1) % 625 MAX_CHANNEL_NUMBER; 626 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) { 627 if (!ieee->active_channel_map[ieee->current_network.channel]) 628 ieee->current_network.channel = 6; 629 goto out; /* no good chans */ 630 } 631 } while (!ieee->active_channel_map[ieee->current_network.channel]); 632 633 if (ieee->scanning_continue == 0) 634 goto out; 635 636 ieee->set_chan(ieee->dev, ieee->current_network.channel); 637 638 if (ieee->active_channel_map[ieee->current_network.channel] == 1) 639 rtllib_send_probe_requests(ieee, 0); 640 641 queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq, 642 MSECS(RTLLIB_SOFTMAC_SCAN_TIME)); 643 644 up(&ieee->scan_sem); 645 return; 646 647out: 648 if (IS_DOT11D_ENABLE(ieee)) 649 DOT11D_ScanComplete(ieee); 650 ieee->current_network.channel = last_channel; 651 652out1: 653 ieee->actscanning = false; 654 ieee->scan_watch_dog = 0; 655 ieee->scanning_continue = 0; 656 up(&ieee->scan_sem); 657} 658 659 660 661static void rtllib_beacons_start(struct rtllib_device *ieee) 662{ 663 unsigned long flags; 664 665 spin_lock_irqsave(&ieee->beacon_lock, flags); 666 667 ieee->beacon_txing = 1; 668 rtllib_send_beacon(ieee); 669 670 spin_unlock_irqrestore(&ieee->beacon_lock, flags); 671} 672 673static void rtllib_beacons_stop(struct rtllib_device *ieee) 674{ 675 unsigned long flags; 676 677 spin_lock_irqsave(&ieee->beacon_lock, flags); 678 679 ieee->beacon_txing = 0; 680 del_timer_sync(&ieee->beacon_timer); 681 682 spin_unlock_irqrestore(&ieee->beacon_lock, flags); 683 684} 685 686 687void rtllib_stop_send_beacons(struct rtllib_device *ieee) 688{ 689 if (ieee->stop_send_beacons) 690 ieee->stop_send_beacons(ieee->dev); 691 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS) 692 rtllib_beacons_stop(ieee); 693} 694EXPORT_SYMBOL(rtllib_stop_send_beacons); 695 696 697void rtllib_start_send_beacons(struct rtllib_device *ieee) 698{ 699 if (ieee->start_send_beacons) 700 ieee->start_send_beacons(ieee->dev); 701 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS) 702 rtllib_beacons_start(ieee); 703} 704EXPORT_SYMBOL(rtllib_start_send_beacons); 705 706 707static void rtllib_softmac_stop_scan(struct rtllib_device *ieee) 708{ 709 down(&ieee->scan_sem); 710 ieee->scan_watch_dog = 0; 711 if (ieee->scanning_continue == 1) { 712 ieee->scanning_continue = 0; 713 ieee->actscanning = false; 714 715 cancel_delayed_work(&ieee->softmac_scan_wq); 716 } 717 718 up(&ieee->scan_sem); 719} 720 721void rtllib_stop_scan(struct rtllib_device *ieee) 722{ 723 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 724 rtllib_softmac_stop_scan(ieee); 725 } else { 726 if (ieee->rtllib_stop_hw_scan) 727 ieee->rtllib_stop_hw_scan(ieee->dev); 728 } 729} 730EXPORT_SYMBOL(rtllib_stop_scan); 731 732void rtllib_stop_scan_syncro(struct rtllib_device *ieee) 733{ 734 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 735 ieee->sync_scan_hurryup = 1; 736 } else { 737 if (ieee->rtllib_stop_hw_scan) 738 ieee->rtllib_stop_hw_scan(ieee->dev); 739 } 740} 741EXPORT_SYMBOL(rtllib_stop_scan_syncro); 742 743bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan) 744{ 745 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 746 if (sync_scan) 747 return ieee->be_scan_inprogress; 748 else 749 return ieee->actscanning || ieee->be_scan_inprogress; 750 } else { 751 return test_bit(STATUS_SCANNING, &ieee->status); 752 } 753} 754EXPORT_SYMBOL(rtllib_act_scanning); 755 756/* called with ieee->lock held */ 757static void rtllib_start_scan(struct rtllib_device *ieee) 758{ 759 RT_TRACE(COMP_DBG, "===>%s()\n", __func__); 760 if (ieee->rtllib_ips_leave_wq != NULL) 761 ieee->rtllib_ips_leave_wq(ieee->dev); 762 763 if (IS_DOT11D_ENABLE(ieee)) { 764 if (IS_COUNTRY_IE_VALID(ieee)) 765 RESET_CIE_WATCHDOG(ieee); 766 } 767 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 768 if (ieee->scanning_continue == 0) { 769 ieee->actscanning = true; 770 ieee->scanning_continue = 1; 771 queue_delayed_work_rsl(ieee->wq, 772 &ieee->softmac_scan_wq, 0); 773 } 774 } else { 775 if (ieee->rtllib_start_hw_scan) 776 ieee->rtllib_start_hw_scan(ieee->dev); 777 } 778} 779 780/* called with wx_sem held */ 781void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh) 782{ 783 if (IS_DOT11D_ENABLE(ieee)) { 784 if (IS_COUNTRY_IE_VALID(ieee)) 785 RESET_CIE_WATCHDOG(ieee); 786 } 787 ieee->sync_scan_hurryup = 0; 788 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 789 rtllib_softmac_scan_syncro(ieee, is_mesh); 790 } else { 791 if (ieee->rtllib_start_hw_scan) 792 ieee->rtllib_start_hw_scan(ieee->dev); 793 } 794} 795EXPORT_SYMBOL(rtllib_start_scan_syncro); 796 797inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon, 798 struct rtllib_device *ieee, int challengelen, u8 *daddr) 799{ 800 struct sk_buff *skb; 801 struct rtllib_authentication *auth; 802 int len = 0; 803 804 len = sizeof(struct rtllib_authentication) + challengelen + 805 ieee->tx_headroom + 4; 806 skb = dev_alloc_skb(len); 807 808 if (!skb) 809 return NULL; 810 811 skb_reserve(skb, ieee->tx_headroom); 812 813 auth = (struct rtllib_authentication *) 814 skb_put(skb, sizeof(struct rtllib_authentication)); 815 816 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH); 817 if (challengelen) 818 auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP); 819 820 auth->header.duration_id = cpu_to_le16(0x013a); 821 memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN); 822 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 823 memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN); 824 if (ieee->auth_mode == 0) 825 auth->algorithm = WLAN_AUTH_OPEN; 826 else if (ieee->auth_mode == 1) 827 auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY); 828 else if (ieee->auth_mode == 2) 829 auth->algorithm = WLAN_AUTH_OPEN; 830 auth->transaction = cpu_to_le16(ieee->associate_seq); 831 ieee->associate_seq++; 832 833 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS); 834 835 return skb; 836} 837 838static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, u8 *dest) 839{ 840 u8 *tag; 841 int beacon_size; 842 struct rtllib_probe_response *beacon_buf; 843 struct sk_buff *skb = NULL; 844 int encrypt; 845 int atim_len, erp_len; 846 struct lib80211_crypt_data *crypt; 847 848 char *ssid = ieee->current_network.ssid; 849 int ssid_len = ieee->current_network.ssid_len; 850 int rate_len = ieee->current_network.rates_len+2; 851 int rate_ex_len = ieee->current_network.rates_ex_len; 852 int wpa_ie_len = ieee->wpa_ie_len; 853 u8 erpinfo_content = 0; 854 855 u8 *tmp_ht_cap_buf = NULL; 856 u8 tmp_ht_cap_len = 0; 857 u8 *tmp_ht_info_buf = NULL; 858 u8 tmp_ht_info_len = 0; 859 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; 860 u8 *tmp_generic_ie_buf = NULL; 861 u8 tmp_generic_ie_len = 0; 862 863 if (rate_ex_len > 0) 864 rate_ex_len += 2; 865 866 if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS) 867 atim_len = 4; 868 else 869 atim_len = 0; 870 871 if ((ieee->current_network.mode == IEEE_G) || 872 (ieee->current_network.mode == IEEE_N_24G && 873 ieee->pHTInfo->bCurSuppCCK)) { 874 erp_len = 3; 875 erpinfo_content = 0; 876 if (ieee->current_network.buseprotection) 877 erpinfo_content |= ERP_UseProtection; 878 } else 879 erp_len = 0; 880 881 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 882 encrypt = ieee->host_encrypt && crypt && crypt->ops && 883 ((0 == strcmp(crypt->ops->name, "R-WEP") || wpa_ie_len)); 884 if (ieee->pHTInfo->bCurrentHTSupport) { 885 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap); 886 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); 887 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo); 888 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo); 889 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf, 890 &tmp_ht_cap_len, encrypt, false); 891 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len, 892 encrypt); 893 894 if (pHTInfo->bRegRT2RTAggregation) { 895 tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; 896 tmp_generic_ie_len = 897 sizeof(ieee->pHTInfo->szRT2RTAggBuffer); 898 HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf, 899 &tmp_generic_ie_len); 900 } 901 } 902 903 beacon_size = sizeof(struct rtllib_probe_response)+2+ 904 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len 905 + wpa_ie_len + ieee->tx_headroom; 906 skb = dev_alloc_skb(beacon_size); 907 if (!skb) 908 return NULL; 909 910 skb_reserve(skb, ieee->tx_headroom); 911 912 beacon_buf = (struct rtllib_probe_response *) skb_put(skb, 913 (beacon_size - ieee->tx_headroom)); 914 memcpy(beacon_buf->header.addr1, dest, ETH_ALEN); 915 memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 916 memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN); 917 918 beacon_buf->header.duration_id = 0; 919 beacon_buf->beacon_interval = 920 cpu_to_le16(ieee->current_network.beacon_interval); 921 beacon_buf->capability = 922 cpu_to_le16(ieee->current_network.capability & 923 WLAN_CAPABILITY_IBSS); 924 beacon_buf->capability |= 925 cpu_to_le16(ieee->current_network.capability & 926 WLAN_CAPABILITY_SHORT_PREAMBLE); 927 928 if (ieee->short_slot && (ieee->current_network.capability & 929 WLAN_CAPABILITY_SHORT_SLOT_TIME)) 930 beacon_buf->capability |= 931 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); 932 933 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 934 if (encrypt) 935 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 936 937 938 beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP); 939 beacon_buf->info_element[0].id = MFIE_TYPE_SSID; 940 beacon_buf->info_element[0].len = ssid_len; 941 942 tag = (u8 *) beacon_buf->info_element[0].data; 943 944 memcpy(tag, ssid, ssid_len); 945 946 tag += ssid_len; 947 948 *(tag++) = MFIE_TYPE_RATES; 949 *(tag++) = rate_len-2; 950 memcpy(tag, ieee->current_network.rates, rate_len-2); 951 tag += rate_len-2; 952 953 *(tag++) = MFIE_TYPE_DS_SET; 954 *(tag++) = 1; 955 *(tag++) = ieee->current_network.channel; 956 957 if (atim_len) { 958 u16 val16; 959 *(tag++) = MFIE_TYPE_IBSS_SET; 960 *(tag++) = 2; 961 val16 = ieee->current_network.atim_window; 962 memcpy((u8 *)tag, (u8 *)&val16, 2); 963 tag += 2; 964 } 965 966 if (erp_len) { 967 *(tag++) = MFIE_TYPE_ERP; 968 *(tag++) = 1; 969 *(tag++) = erpinfo_content; 970 } 971 if (rate_ex_len) { 972 *(tag++) = MFIE_TYPE_RATES_EX; 973 *(tag++) = rate_ex_len-2; 974 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2); 975 tag += rate_ex_len-2; 976 } 977 978 if (wpa_ie_len) { 979 if (ieee->iw_mode == IW_MODE_ADHOC) 980 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4); 981 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len); 982 tag += ieee->wpa_ie_len; 983 } 984 return skb; 985} 986 987static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest) 988{ 989 struct sk_buff *skb; 990 u8 *tag; 991 992 struct lib80211_crypt_data *crypt; 993 struct rtllib_assoc_response_frame *assoc; 994 short encrypt; 995 996 unsigned int rate_len = rtllib_MFIE_rate_len(ieee); 997 int len = sizeof(struct rtllib_assoc_response_frame) + rate_len + 998 ieee->tx_headroom; 999 1000 skb = dev_alloc_skb(len); 1001 1002 if (!skb) 1003 return NULL; 1004 1005 skb_reserve(skb, ieee->tx_headroom); 1006 1007 assoc = (struct rtllib_assoc_response_frame *) 1008 skb_put(skb, sizeof(struct rtllib_assoc_response_frame)); 1009 1010 assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP); 1011 memcpy(assoc->header.addr1, dest, ETH_ALEN); 1012 memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN); 1013 memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 1014 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ? 1015 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS); 1016 1017 1018 if (ieee->short_slot) 1019 assoc->capability |= 1020 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); 1021 1022 if (ieee->host_encrypt) 1023 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 1024 else 1025 crypt = NULL; 1026 1027 encrypt = (crypt && crypt->ops); 1028 1029 if (encrypt) 1030 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 1031 1032 assoc->status = 0; 1033 assoc->aid = cpu_to_le16(ieee->assoc_id); 1034 if (ieee->assoc_id == 0x2007) 1035 ieee->assoc_id = 0; 1036 else 1037 ieee->assoc_id++; 1038 1039 tag = (u8 *) skb_put(skb, rate_len); 1040 rtllib_MFIE_Brate(ieee, &tag); 1041 rtllib_MFIE_Grate(ieee, &tag); 1042 1043 return skb; 1044} 1045 1046static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status, 1047 u8 *dest) 1048{ 1049 struct sk_buff *skb = NULL; 1050 struct rtllib_authentication *auth; 1051 int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1; 1052 1053 skb = dev_alloc_skb(len); 1054 if (!skb) 1055 return NULL; 1056 1057 skb->len = sizeof(struct rtllib_authentication); 1058 1059 skb_reserve(skb, ieee->tx_headroom); 1060 1061 auth = (struct rtllib_authentication *) 1062 skb_put(skb, sizeof(struct rtllib_authentication)); 1063 1064 auth->status = cpu_to_le16(status); 1065 auth->transaction = cpu_to_le16(2); 1066 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN); 1067 1068 memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN); 1069 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 1070 memcpy(auth->header.addr1, dest, ETH_ALEN); 1071 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH); 1072 return skb; 1073 1074 1075} 1076 1077static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr) 1078{ 1079 struct sk_buff *skb; 1080 struct rtllib_hdr_3addr *hdr; 1081 1082 skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom); 1083 if (!skb) 1084 return NULL; 1085 1086 skb_reserve(skb, ieee->tx_headroom); 1087 1088 hdr = (struct rtllib_hdr_3addr *)skb_put(skb, 1089 sizeof(struct rtllib_hdr_3addr)); 1090 1091 memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN); 1092 memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN); 1093 memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN); 1094 1095 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA | 1096 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS | 1097 (pwr ? RTLLIB_FCTL_PM : 0)); 1098 1099 return skb; 1100 1101 1102} 1103 1104static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee) 1105{ 1106 struct sk_buff *skb; 1107 struct rtllib_pspoll_hdr *hdr; 1108 1109 skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom); 1110 if (!skb) 1111 return NULL; 1112 1113 skb_reserve(skb, ieee->tx_headroom); 1114 1115 hdr = (struct rtllib_pspoll_hdr *)skb_put(skb, 1116 sizeof(struct rtllib_pspoll_hdr)); 1117 1118 memcpy(hdr->bssid, ieee->current_network.bssid, ETH_ALEN); 1119 memcpy(hdr->ta, ieee->dev->dev_addr, ETH_ALEN); 1120 1121 hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000); 1122 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL | 1123 RTLLIB_FCTL_PM); 1124 1125 return skb; 1126 1127} 1128 1129static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest) 1130{ 1131 struct sk_buff *buf = rtllib_assoc_resp(ieee, dest); 1132 1133 if (buf) 1134 softmac_mgmt_xmit(buf, ieee); 1135} 1136 1137 1138static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest) 1139{ 1140 struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest); 1141 1142 if (buf) 1143 softmac_mgmt_xmit(buf, ieee); 1144} 1145 1146 1147static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest) 1148{ 1149 struct sk_buff *buf = rtllib_probe_resp(ieee, dest); 1150 1151 if (buf) 1152 softmac_mgmt_xmit(buf, ieee); 1153} 1154 1155 1156inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid) 1157{ 1158 int i = 0; 1159 1160 do { 1161 if ((ieee->PMKIDList[i].bUsed) && 1162 (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0)) 1163 break; 1164 i++; 1165 } while (i < NUM_PMKID_CACHE); 1166 1167 if (i == NUM_PMKID_CACHE) 1168 i = -1; 1169 return i; 1170} 1171 1172inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon, 1173 struct rtllib_device *ieee) 1174{ 1175 struct sk_buff *skb; 1176 struct rtllib_assoc_request_frame *hdr; 1177 u8 *tag, *ies; 1178 int i; 1179 u8 *ht_cap_buf = NULL; 1180 u8 ht_cap_len = 0; 1181 u8 *realtek_ie_buf = NULL; 1182 u8 realtek_ie_len = 0; 1183 int wpa_ie_len = ieee->wpa_ie_len; 1184 int wps_ie_len = ieee->wps_ie_len; 1185 unsigned int ckip_ie_len = 0; 1186 unsigned int ccxrm_ie_len = 0; 1187 unsigned int cxvernum_ie_len = 0; 1188 struct lib80211_crypt_data *crypt; 1189 int encrypt; 1190 int PMKCacheIdx; 1191 1192 unsigned int rate_len = (beacon->rates_len ? 1193 (beacon->rates_len + 2) : 0) + 1194 (beacon->rates_ex_len ? (beacon->rates_ex_len) + 1195 2 : 0); 1196 1197 unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0; 1198 unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0; 1199 1200 int len = 0; 1201 1202 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 1203 if (crypt != NULL) 1204 encrypt = ieee->host_encrypt && crypt && crypt->ops && 1205 ((0 == strcmp(crypt->ops->name, "R-WEP") || 1206 wpa_ie_len)); 1207 else 1208 encrypt = 0; 1209 1210 if ((ieee->rtllib_ap_sec_type && 1211 (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) || 1212 ieee->bForcedBgMode) { 1213 ieee->pHTInfo->bEnableHT = 0; 1214 ieee->mode = WIRELESS_MODE_G; 1215 } 1216 1217 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1218 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap); 1219 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); 1220 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len, 1221 encrypt, true); 1222 if (ieee->pHTInfo->bCurrentRT2RTAggregation) { 1223 realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; 1224 realtek_ie_len = 1225 sizeof(ieee->pHTInfo->szRT2RTAggBuffer); 1226 HTConstructRT2RTAggElement(ieee, realtek_ie_buf, 1227 &realtek_ie_len); 1228 } 1229 } 1230 1231 if (beacon->bCkipSupported) 1232 ckip_ie_len = 30+2; 1233 if (beacon->bCcxRmEnable) 1234 ccxrm_ie_len = 6+2; 1235 if (beacon->BssCcxVerNumber >= 2) 1236 cxvernum_ie_len = 5+2; 1237 1238 PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid); 1239 if (PMKCacheIdx >= 0) { 1240 wpa_ie_len += 18; 1241 printk(KERN_INFO "[PMK cache]: WPA2 IE length: %x\n", 1242 wpa_ie_len); 1243 } 1244 len = sizeof(struct rtllib_assoc_request_frame) + 2 1245 + beacon->ssid_len 1246 + rate_len 1247 + wpa_ie_len 1248 + wps_ie_len 1249 + wmm_info_len 1250 + turbo_info_len 1251 + ht_cap_len 1252 + realtek_ie_len 1253 + ckip_ie_len 1254 + ccxrm_ie_len 1255 + cxvernum_ie_len 1256 + ieee->tx_headroom; 1257 1258 skb = dev_alloc_skb(len); 1259 1260 if (!skb) 1261 return NULL; 1262 1263 skb_reserve(skb, ieee->tx_headroom); 1264 1265 hdr = (struct rtllib_assoc_request_frame *) 1266 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2); 1267 1268 1269 hdr->header.frame_ctl = RTLLIB_STYPE_ASSOC_REQ; 1270 hdr->header.duration_id = cpu_to_le16(37); 1271 memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN); 1272 memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 1273 memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN); 1274 1275 memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN); 1276 1277 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS); 1278 if (beacon->capability & WLAN_CAPABILITY_PRIVACY) 1279 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 1280 1281 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) 1282 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE); 1283 1284 if (ieee->short_slot && 1285 (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME)) 1286 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); 1287 1288 1289 hdr->listen_interval = cpu_to_le16(beacon->listen_interval); 1290 1291 hdr->info_element[0].id = MFIE_TYPE_SSID; 1292 1293 hdr->info_element[0].len = beacon->ssid_len; 1294 tag = skb_put(skb, beacon->ssid_len); 1295 memcpy(tag, beacon->ssid, beacon->ssid_len); 1296 1297 tag = skb_put(skb, rate_len); 1298 1299 if (beacon->rates_len) { 1300 *tag++ = MFIE_TYPE_RATES; 1301 *tag++ = beacon->rates_len; 1302 for (i = 0; i < beacon->rates_len; i++) 1303 *tag++ = beacon->rates[i]; 1304 } 1305 1306 if (beacon->rates_ex_len) { 1307 *tag++ = MFIE_TYPE_RATES_EX; 1308 *tag++ = beacon->rates_ex_len; 1309 for (i = 0; i < beacon->rates_ex_len; i++) 1310 *tag++ = beacon->rates_ex[i]; 1311 } 1312 1313 if (beacon->bCkipSupported) { 1314 static u8 AironetIeOui[] = {0x00, 0x01, 0x66}; 1315 u8 CcxAironetBuf[30]; 1316 struct octet_string osCcxAironetIE; 1317 1318 memset(CcxAironetBuf, 0, 30); 1319 osCcxAironetIE.Octet = CcxAironetBuf; 1320 osCcxAironetIE.Length = sizeof(CcxAironetBuf); 1321 memcpy(osCcxAironetIE.Octet, AironetIeOui, 1322 sizeof(AironetIeOui)); 1323 1324 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |= 1325 (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC); 1326 tag = skb_put(skb, ckip_ie_len); 1327 *tag++ = MFIE_TYPE_AIRONET; 1328 *tag++ = osCcxAironetIE.Length; 1329 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length); 1330 tag += osCcxAironetIE.Length; 1331 } 1332 1333 if (beacon->bCcxRmEnable) { 1334 static u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 0x00}; 1335 struct octet_string osCcxRmCap; 1336 1337 osCcxRmCap.Octet = CcxRmCapBuf; 1338 osCcxRmCap.Length = sizeof(CcxRmCapBuf); 1339 tag = skb_put(skb, ccxrm_ie_len); 1340 *tag++ = MFIE_TYPE_GENERIC; 1341 *tag++ = osCcxRmCap.Length; 1342 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length); 1343 tag += osCcxRmCap.Length; 1344 } 1345 1346 if (beacon->BssCcxVerNumber >= 2) { 1347 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00}; 1348 struct octet_string osCcxVerNum; 1349 1350 CcxVerNumBuf[4] = beacon->BssCcxVerNumber; 1351 osCcxVerNum.Octet = CcxVerNumBuf; 1352 osCcxVerNum.Length = sizeof(CcxVerNumBuf); 1353 tag = skb_put(skb, cxvernum_ie_len); 1354 *tag++ = MFIE_TYPE_GENERIC; 1355 *tag++ = osCcxVerNum.Length; 1356 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length); 1357 tag += osCcxVerNum.Length; 1358 } 1359 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1360 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) { 1361 tag = skb_put(skb, ht_cap_len); 1362 *tag++ = MFIE_TYPE_HT_CAP; 1363 *tag++ = ht_cap_len - 2; 1364 memcpy(tag, ht_cap_buf, ht_cap_len - 2); 1365 tag += ht_cap_len - 2; 1366 } 1367 } 1368 1369 if (wpa_ie_len) { 1370 tag = skb_put(skb, ieee->wpa_ie_len); 1371 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len); 1372 1373 if (PMKCacheIdx >= 0) { 1374 tag = skb_put(skb, 18); 1375 *tag = 1; 1376 *(tag + 1) = 0; 1377 memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID, 1378 16); 1379 } 1380 } 1381 if (wmm_info_len) { 1382 tag = skb_put(skb, wmm_info_len); 1383 rtllib_WMM_Info(ieee, &tag); 1384 } 1385 1386 if (wps_ie_len && ieee->wps_ie) { 1387 tag = skb_put(skb, wps_ie_len); 1388 memcpy(tag, ieee->wps_ie, wps_ie_len); 1389 } 1390 1391 tag = skb_put(skb, turbo_info_len); 1392 if (turbo_info_len) 1393 rtllib_TURBO_Info(ieee, &tag); 1394 1395 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1396 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) { 1397 tag = skb_put(skb, ht_cap_len); 1398 *tag++ = MFIE_TYPE_GENERIC; 1399 *tag++ = ht_cap_len - 2; 1400 memcpy(tag, ht_cap_buf, ht_cap_len - 2); 1401 tag += ht_cap_len - 2; 1402 } 1403 1404 if (ieee->pHTInfo->bCurrentRT2RTAggregation) { 1405 tag = skb_put(skb, realtek_ie_len); 1406 *tag++ = MFIE_TYPE_GENERIC; 1407 *tag++ = realtek_ie_len - 2; 1408 memcpy(tag, realtek_ie_buf, realtek_ie_len - 2); 1409 } 1410 } 1411 1412 kfree(ieee->assocreq_ies); 1413 ieee->assocreq_ies = NULL; 1414 ies = &(hdr->info_element[0].id); 1415 ieee->assocreq_ies_len = (skb->data + skb->len) - ies; 1416 ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC); 1417 if (ieee->assocreq_ies) 1418 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len); 1419 else { 1420 printk(KERN_INFO "%s()Warning: can't alloc memory for assocreq" 1421 "_ies\n", __func__); 1422 ieee->assocreq_ies_len = 0; 1423 } 1424 return skb; 1425} 1426 1427void rtllib_associate_abort(struct rtllib_device *ieee) 1428{ 1429 unsigned long flags; 1430 1431 spin_lock_irqsave(&ieee->lock, flags); 1432 1433 ieee->associate_seq++; 1434 1435 /* don't scan, and avoid to have the RX path possibily 1436 * try again to associate. Even do not react to AUTH or 1437 * ASSOC response. Just wait for the retry wq to be scheduled. 1438 * Here we will check if there are good nets to associate 1439 * with, so we retry or just get back to NO_LINK and scanning 1440 */ 1441 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) { 1442 RTLLIB_DEBUG_MGMT("Authentication failed\n"); 1443 ieee->softmac_stats.no_auth_rs++; 1444 } else { 1445 RTLLIB_DEBUG_MGMT("Association failed\n"); 1446 ieee->softmac_stats.no_ass_rs++; 1447 } 1448 1449 ieee->state = RTLLIB_ASSOCIATING_RETRY; 1450 1451 queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq, 1452 RTLLIB_SOFTMAC_ASSOC_RETRY_TIME); 1453 1454 spin_unlock_irqrestore(&ieee->lock, flags); 1455} 1456 1457static void rtllib_associate_abort_cb(unsigned long dev) 1458{ 1459 rtllib_associate_abort((struct rtllib_device *) dev); 1460} 1461 1462static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr) 1463{ 1464 struct rtllib_network *beacon = &ieee->current_network; 1465 struct sk_buff *skb; 1466 1467 RTLLIB_DEBUG_MGMT("Stopping scan\n"); 1468 1469 ieee->softmac_stats.tx_auth_rq++; 1470 1471 skb = rtllib_authentication_req(beacon, ieee, 0, daddr); 1472 1473 if (!skb) 1474 rtllib_associate_abort(ieee); 1475 else { 1476 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING ; 1477 RTLLIB_DEBUG_MGMT("Sending authentication request\n"); 1478 softmac_mgmt_xmit(skb, ieee); 1479 if (!timer_pending(&ieee->associate_timer)) { 1480 ieee->associate_timer.expires = jiffies + (HZ / 2); 1481 add_timer(&ieee->associate_timer); 1482 } 1483 } 1484} 1485 1486static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, int chlen) 1487{ 1488 u8 *c; 1489 struct sk_buff *skb; 1490 struct rtllib_network *beacon = &ieee->current_network; 1491 1492 ieee->associate_seq++; 1493 ieee->softmac_stats.tx_auth_rq++; 1494 1495 skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid); 1496 1497 if (!skb) 1498 rtllib_associate_abort(ieee); 1499 else { 1500 c = skb_put(skb, chlen+2); 1501 *(c++) = MFIE_TYPE_CHALLENGE; 1502 *(c++) = chlen; 1503 memcpy(c, challenge, chlen); 1504 1505 RTLLIB_DEBUG_MGMT("Sending authentication challenge " 1506 "response\n"); 1507 1508 rtllib_encrypt_fragment(ieee, skb, 1509 sizeof(struct rtllib_hdr_3addr)); 1510 1511 softmac_mgmt_xmit(skb, ieee); 1512 mod_timer(&ieee->associate_timer, jiffies + (HZ/2)); 1513 } 1514 kfree(challenge); 1515} 1516 1517static void rtllib_associate_step2(struct rtllib_device *ieee) 1518{ 1519 struct sk_buff *skb; 1520 struct rtllib_network *beacon = &ieee->current_network; 1521 1522 del_timer_sync(&ieee->associate_timer); 1523 1524 RTLLIB_DEBUG_MGMT("Sending association request\n"); 1525 1526 ieee->softmac_stats.tx_ass_rq++; 1527 skb = rtllib_association_req(beacon, ieee); 1528 if (!skb) 1529 rtllib_associate_abort(ieee); 1530 else { 1531 softmac_mgmt_xmit(skb, ieee); 1532 mod_timer(&ieee->associate_timer, jiffies + (HZ/2)); 1533 } 1534} 1535 1536#define CANCELLED 2 1537static void rtllib_associate_complete_wq(void *data) 1538{ 1539 struct rtllib_device *ieee = (struct rtllib_device *) 1540 container_of_work_rsl(data, 1541 struct rtllib_device, 1542 associate_complete_wq); 1543 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *) 1544 (&(ieee->PowerSaveControl)); 1545 printk(KERN_INFO "Associated successfully\n"); 1546 if (!ieee->is_silent_reset) { 1547 printk(KERN_INFO "normal associate\n"); 1548 notify_wx_assoc_event(ieee); 1549 } 1550 1551 netif_carrier_on(ieee->dev); 1552 ieee->is_roaming = false; 1553 if (rtllib_is_54g(&ieee->current_network) && 1554 (ieee->modulation & RTLLIB_OFDM_MODULATION)) { 1555 ieee->rate = 108; 1556 printk(KERN_INFO"Using G rates:%d\n", ieee->rate); 1557 } else { 1558 ieee->rate = 22; 1559 ieee->SetWirelessMode(ieee->dev, IEEE_B); 1560 printk(KERN_INFO"Using B rates:%d\n", ieee->rate); 1561 } 1562 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1563 printk(KERN_INFO "Successfully associated, ht enabled\n"); 1564 HTOnAssocRsp(ieee); 1565 } else { 1566 printk(KERN_INFO "Successfully associated, ht not " 1567 "enabled(%d, %d)\n", 1568 ieee->pHTInfo->bCurrentHTSupport, 1569 ieee->pHTInfo->bEnableHT); 1570 memset(ieee->dot11HTOperationalRateSet, 0, 16); 1571 } 1572 ieee->LinkDetectInfo.SlotNum = 2 * (1 + 1573 ieee->current_network.beacon_interval / 1574 500); 1575 if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 || 1576 ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) { 1577 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1; 1578 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1; 1579 } 1580 pPSC->LpsIdleCount = 0; 1581 ieee->link_change(ieee->dev); 1582 1583 if (ieee->is_silent_reset) { 1584 printk(KERN_INFO "silent reset associate\n"); 1585 ieee->is_silent_reset = false; 1586 } 1587 1588 if (ieee->data_hard_resume) 1589 ieee->data_hard_resume(ieee->dev); 1590 1591} 1592 1593static void rtllib_sta_send_associnfo(struct rtllib_device *ieee) 1594{ 1595} 1596 1597static void rtllib_associate_complete(struct rtllib_device *ieee) 1598{ 1599 del_timer_sync(&ieee->associate_timer); 1600 1601 ieee->state = RTLLIB_LINKED; 1602 rtllib_sta_send_associnfo(ieee); 1603 1604 queue_work_rsl(ieee->wq, &ieee->associate_complete_wq); 1605} 1606 1607static void rtllib_associate_procedure_wq(void *data) 1608{ 1609 struct rtllib_device *ieee = container_of_dwork_rsl(data, 1610 struct rtllib_device, 1611 associate_procedure_wq); 1612 rtllib_stop_scan_syncro(ieee); 1613 if (ieee->rtllib_ips_leave != NULL) 1614 ieee->rtllib_ips_leave(ieee->dev); 1615 down(&ieee->wx_sem); 1616 1617 if (ieee->data_hard_stop) 1618 ieee->data_hard_stop(ieee->dev); 1619 1620 rtllib_stop_scan(ieee); 1621 RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__, 1622 ieee->current_network.channel); 1623 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 1624 if (ieee->eRFPowerState == eRfOff) { 1625 RT_TRACE(COMP_DBG, "=============>%s():Rf state is eRfOff," 1626 " schedule ipsleave wq again,return\n", __func__); 1627 if (ieee->rtllib_ips_leave_wq != NULL) 1628 ieee->rtllib_ips_leave_wq(ieee->dev); 1629 up(&ieee->wx_sem); 1630 return; 1631 } 1632 ieee->associate_seq = 1; 1633 1634 rtllib_associate_step1(ieee, ieee->current_network.bssid); 1635 1636 up(&ieee->wx_sem); 1637} 1638 1639inline void rtllib_softmac_new_net(struct rtllib_device *ieee, 1640 struct rtllib_network *net) 1641{ 1642 u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1]; 1643 int tmp_ssid_len = 0; 1644 1645 short apset, ssidset, ssidbroad, apmatch, ssidmatch; 1646 1647 /* we are interested in new new only if we are not associated 1648 * and we are not associating / authenticating 1649 */ 1650 if (ieee->state != RTLLIB_NOLINK) 1651 return; 1652 1653 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability & 1654 WLAN_CAPABILITY_ESS)) 1655 return; 1656 1657 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability & 1658 WLAN_CAPABILITY_IBSS)) 1659 return; 1660 1661 if ((ieee->iw_mode == IW_MODE_ADHOC) && 1662 (net->channel > ieee->ibss_maxjoin_chal)) 1663 return; 1664 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) { 1665 /* if the user specified the AP MAC, we need also the essid 1666 * This could be obtained by beacons or, if the network does not 1667 * broadcast it, it can be put manually. 1668 */ 1669 apset = ieee->wap_set; 1670 ssidset = ieee->ssid_set; 1671 ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0'); 1672 apmatch = (memcmp(ieee->current_network.bssid, net->bssid, 1673 ETH_ALEN) == 0); 1674 if (!ssidbroad) { 1675 ssidmatch = (ieee->current_network.ssid_len == 1676 net->hidden_ssid_len) && 1677 (!strncmp(ieee->current_network.ssid, 1678 net->hidden_ssid, net->hidden_ssid_len)); 1679 if (net->hidden_ssid_len > 0) { 1680 strncpy(net->ssid, net->hidden_ssid, 1681 net->hidden_ssid_len); 1682 net->ssid_len = net->hidden_ssid_len; 1683 ssidbroad = 1; 1684 } 1685 } else 1686 ssidmatch = 1687 (ieee->current_network.ssid_len == net->ssid_len) && 1688 (!strncmp(ieee->current_network.ssid, net->ssid, 1689 net->ssid_len)); 1690 1691 /* if the user set the AP check if match. 1692 * if the network does not broadcast essid we check the 1693 * user supplied ANY essid 1694 * if the network does broadcast and the user does not set 1695 * essid it is OK 1696 * if the network does broadcast and the user did set essid 1697 * check if essid match 1698 * if the ap is not set, check that the user set the bssid 1699 * and the network does broadcast and that those two bssid match 1700 */ 1701 if ((apset && apmatch && 1702 ((ssidset && ssidbroad && ssidmatch) || 1703 (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) || 1704 (!apset && ssidset && ssidbroad && ssidmatch) || 1705 (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) { 1706 /* if the essid is hidden replace it with the 1707 * essid provided by the user. 1708 */ 1709 if (!ssidbroad) { 1710 strncpy(tmp_ssid, ieee->current_network.ssid, 1711 IW_ESSID_MAX_SIZE); 1712 tmp_ssid_len = ieee->current_network.ssid_len; 1713 } 1714 memcpy(&ieee->current_network, net, 1715 sizeof(struct rtllib_network)); 1716 if (!ssidbroad) { 1717 strncpy(ieee->current_network.ssid, tmp_ssid, 1718 IW_ESSID_MAX_SIZE); 1719 ieee->current_network.ssid_len = tmp_ssid_len; 1720 } 1721 printk(KERN_INFO"Linking with %s,channel:%d, qos:%d, " 1722 "myHT:%d, networkHT:%d, mode:%x cur_net.flags" 1723 ":0x%x\n", ieee->current_network.ssid, 1724 ieee->current_network.channel, 1725 ieee->current_network.qos_data.supported, 1726 ieee->pHTInfo->bEnableHT, 1727 ieee->current_network.bssht.bdSupportHT, 1728 ieee->current_network.mode, 1729 ieee->current_network.flags); 1730 1731 if ((rtllib_act_scanning(ieee, false)) && 1732 !(ieee->softmac_features & IEEE_SOFTMAC_SCAN)) 1733 rtllib_stop_scan_syncro(ieee); 1734 1735 ieee->hwscan_ch_bk = ieee->current_network.channel; 1736 HTResetIOTSetting(ieee->pHTInfo); 1737 ieee->wmm_acm = 0; 1738 if (ieee->iw_mode == IW_MODE_INFRA) { 1739 /* Join the network for the first time */ 1740 ieee->AsocRetryCount = 0; 1741 if ((ieee->current_network.qos_data.supported == 1) && 1742 ieee->current_network.bssht.bdSupportHT) 1743 HTResetSelfAndSavePeerSetting(ieee, 1744 &(ieee->current_network)); 1745 else 1746 ieee->pHTInfo->bCurrentHTSupport = 1747 false; 1748 1749 ieee->state = RTLLIB_ASSOCIATING; 1750 if (ieee->LedControlHandler != NULL) 1751 ieee->LedControlHandler(ieee->dev, 1752 LED_CTL_START_TO_LINK); 1753 queue_delayed_work_rsl(ieee->wq, 1754 &ieee->associate_procedure_wq, 0); 1755 } else { 1756 if (rtllib_is_54g(&ieee->current_network) && 1757 (ieee->modulation & RTLLIB_OFDM_MODULATION)) { 1758 ieee->rate = 108; 1759 ieee->SetWirelessMode(ieee->dev, IEEE_G); 1760 printk(KERN_INFO"Using G rates\n"); 1761 } else { 1762 ieee->rate = 22; 1763 ieee->SetWirelessMode(ieee->dev, IEEE_B); 1764 printk(KERN_INFO"Using B rates\n"); 1765 } 1766 memset(ieee->dot11HTOperationalRateSet, 0, 16); 1767 ieee->state = RTLLIB_LINKED; 1768 } 1769 } 1770 } 1771} 1772 1773void rtllib_softmac_check_all_nets(struct rtllib_device *ieee) 1774{ 1775 unsigned long flags; 1776 struct rtllib_network *target; 1777 1778 spin_lock_irqsave(&ieee->lock, flags); 1779 1780 list_for_each_entry(target, &ieee->network_list, list) { 1781 1782 /* if the state become different that NOLINK means 1783 * we had found what we are searching for 1784 */ 1785 1786 if (ieee->state != RTLLIB_NOLINK) 1787 break; 1788 1789 if (ieee->scan_age == 0 || time_after(target->last_scanned + 1790 ieee->scan_age, jiffies)) 1791 rtllib_softmac_new_net(ieee, target); 1792 } 1793 spin_unlock_irqrestore(&ieee->lock, flags); 1794} 1795 1796static inline u16 auth_parse(struct sk_buff *skb, u8 **challenge, int *chlen) 1797{ 1798 struct rtllib_authentication *a; 1799 u8 *t; 1800 1801 if (skb->len < (sizeof(struct rtllib_authentication) - 1802 sizeof(struct rtllib_info_element))) { 1803 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len); 1804 return 0xcafe; 1805 } 1806 *challenge = NULL; 1807 a = (struct rtllib_authentication *) skb->data; 1808 if (skb->len > (sizeof(struct rtllib_authentication) + 3)) { 1809 t = skb->data + sizeof(struct rtllib_authentication); 1810 1811 if (*(t++) == MFIE_TYPE_CHALLENGE) { 1812 *chlen = *(t++); 1813 *challenge = kmemdup(t, *chlen, GFP_ATOMIC); 1814 if (!*challenge) 1815 return -ENOMEM; 1816 } 1817 } 1818 return cpu_to_le16(a->status); 1819} 1820 1821static int auth_rq_parse(struct sk_buff *skb, u8 *dest) 1822{ 1823 struct rtllib_authentication *a; 1824 1825 if (skb->len < (sizeof(struct rtllib_authentication) - 1826 sizeof(struct rtllib_info_element))) { 1827 RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n", 1828 skb->len); 1829 return -1; 1830 } 1831 a = (struct rtllib_authentication *) skb->data; 1832 1833 memcpy(dest, a->header.addr2, ETH_ALEN); 1834 1835 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN) 1836 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; 1837 1838 return WLAN_STATUS_SUCCESS; 1839} 1840 1841static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb, 1842 u8 *src) 1843{ 1844 u8 *tag; 1845 u8 *skbend; 1846 u8 *ssid = NULL; 1847 u8 ssidlen = 0; 1848 struct rtllib_hdr_3addr *header = 1849 (struct rtllib_hdr_3addr *) skb->data; 1850 bool bssid_match; 1851 1852 if (skb->len < sizeof(struct rtllib_hdr_3addr)) 1853 return -1; /* corrupted */ 1854 1855 bssid_match = 1856 (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) && 1857 (!is_broadcast_ether_addr(header->addr3)); 1858 if (bssid_match) 1859 return -1; 1860 1861 memcpy(src, header->addr2, ETH_ALEN); 1862 1863 skbend = (u8 *)skb->data + skb->len; 1864 1865 tag = skb->data + sizeof(struct rtllib_hdr_3addr); 1866 1867 while (tag + 1 < skbend) { 1868 if (*tag == 0) { 1869 ssid = tag + 2; 1870 ssidlen = *(tag + 1); 1871 break; 1872 } 1873 tag++; /* point to the len field */ 1874 tag = tag + *(tag); /* point to the last data byte of the tag */ 1875 tag++; /* point to the next tag */ 1876 } 1877 1878 if (ssidlen == 0) 1879 return 1; 1880 1881 if (!ssid) 1882 return 1; /* ssid not found in tagged param */ 1883 1884 return !strncmp(ssid, ieee->current_network.ssid, ssidlen); 1885} 1886 1887static int assoc_rq_parse(struct sk_buff *skb, u8 *dest) 1888{ 1889 struct rtllib_assoc_request_frame *a; 1890 1891 if (skb->len < (sizeof(struct rtllib_assoc_request_frame) - 1892 sizeof(struct rtllib_info_element))) { 1893 1894 RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len); 1895 return -1; 1896 } 1897 1898 a = (struct rtllib_assoc_request_frame *) skb->data; 1899 1900 memcpy(dest, a->header.addr2, ETH_ALEN); 1901 1902 return 0; 1903} 1904 1905static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb, 1906 int *aid) 1907{ 1908 struct rtllib_assoc_response_frame *response_head; 1909 u16 status_code; 1910 1911 if (skb->len < sizeof(struct rtllib_assoc_response_frame)) { 1912 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len); 1913 return 0xcafe; 1914 } 1915 1916 response_head = (struct rtllib_assoc_response_frame *) skb->data; 1917 *aid = le16_to_cpu(response_head->aid) & 0x3fff; 1918 1919 status_code = le16_to_cpu(response_head->status); 1920 if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES || 1921 status_code == WLAN_STATUS_CAPS_UNSUPPORTED) && 1922 ((ieee->mode == IEEE_G) && 1923 (ieee->current_network.mode == IEEE_N_24G) && 1924 (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) { 1925 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE; 1926 } else { 1927 ieee->AsocRetryCount = 0; 1928 } 1929 1930 return le16_to_cpu(response_head->status); 1931} 1932 1933void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb) 1934{ 1935 u8 dest[ETH_ALEN]; 1936 1937 ieee->softmac_stats.rx_probe_rq++; 1938 if (probe_rq_parse(ieee, skb, dest) > 0) { 1939 ieee->softmac_stats.tx_probe_rs++; 1940 rtllib_resp_to_probe(ieee, dest); 1941 } 1942} 1943 1944static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee, 1945 struct sk_buff *skb) 1946{ 1947 u8 dest[ETH_ALEN]; 1948 int status; 1949 1950 ieee->softmac_stats.rx_auth_rq++; 1951 1952 status = auth_rq_parse(skb, dest); 1953 if (status != -1) 1954 rtllib_resp_to_auth(ieee, status, dest); 1955} 1956 1957static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee, 1958 struct sk_buff *skb) 1959{ 1960 1961 u8 dest[ETH_ALEN]; 1962 1963 ieee->softmac_stats.rx_ass_rq++; 1964 if (assoc_rq_parse(skb, dest) != -1) 1965 rtllib_resp_to_assoc_rq(ieee, dest); 1966 1967 printk(KERN_INFO"New client associated: %pM\n", dest); 1968} 1969 1970void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr) 1971{ 1972 1973 struct sk_buff *buf = rtllib_null_func(ieee, pwr); 1974 1975 if (buf) 1976 softmac_ps_mgmt_xmit(buf, ieee); 1977} 1978EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame); 1979 1980void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee) 1981{ 1982 struct sk_buff *buf = rtllib_pspoll_func(ieee); 1983 1984 if (buf) 1985 softmac_ps_mgmt_xmit(buf, ieee); 1986} 1987 1988static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time) 1989{ 1990 int timeout = ieee->ps_timeout; 1991 u8 dtim; 1992 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *) 1993 (&(ieee->PowerSaveControl)); 1994 1995 if (ieee->LPSDelayCnt) { 1996 ieee->LPSDelayCnt--; 1997 return 0; 1998 } 1999 2000 dtim = ieee->current_network.dtim_data; 2001 if (!(dtim & RTLLIB_DTIM_VALID)) 2002 return 0; 2003 timeout = ieee->current_network.beacon_interval; 2004 ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID; 2005 /* there's no need to nofity AP that I find you buffered 2006 * with broadcast packet */ 2007 if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps)) 2008 return 2; 2009 2010 if (!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout))) 2011 return 0; 2012 if (!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout))) 2013 return 0; 2014 if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) && 2015 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head)) 2016 return 0; 2017 2018 if (time) { 2019 if (ieee->bAwakePktSent) { 2020 pPSC->LPSAwakeIntvl = 1; 2021 } else { 2022 u8 MaxPeriod = 1; 2023 2024 if (pPSC->LPSAwakeIntvl == 0) 2025 pPSC->LPSAwakeIntvl = 1; 2026 if (pPSC->RegMaxLPSAwakeIntvl == 0) 2027 MaxPeriod = 1; 2028 else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF) 2029 MaxPeriod = ieee->current_network.dtim_period; 2030 else 2031 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl; 2032 pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >= 2033 MaxPeriod) ? MaxPeriod : 2034 (pPSC->LPSAwakeIntvl + 1); 2035 } 2036 { 2037 u8 LPSAwakeIntvl_tmp = 0; 2038 u8 period = ieee->current_network.dtim_period; 2039 u8 count = ieee->current_network.tim.tim_count; 2040 2041 if (count == 0) { 2042 if (pPSC->LPSAwakeIntvl > period) 2043 LPSAwakeIntvl_tmp = period + 2044 (pPSC->LPSAwakeIntvl - 2045 period) - 2046 ((pPSC->LPSAwakeIntvl-period) % 2047 period); 2048 else 2049 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl; 2050 2051 } else { 2052 if (pPSC->LPSAwakeIntvl > 2053 ieee->current_network.tim.tim_count) 2054 LPSAwakeIntvl_tmp = count + 2055 (pPSC->LPSAwakeIntvl - count) - 2056 ((pPSC->LPSAwakeIntvl-count)%period); 2057 else 2058 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl; 2059 } 2060 2061 *time = ieee->current_network.last_dtim_sta_time 2062 + MSECS(ieee->current_network.beacon_interval * 2063 LPSAwakeIntvl_tmp); 2064 } 2065 } 2066 2067 return 1; 2068 2069 2070} 2071 2072static inline void rtllib_sta_ps(struct rtllib_device *ieee) 2073{ 2074 u64 time; 2075 short sleep; 2076 unsigned long flags, flags2; 2077 2078 spin_lock_irqsave(&ieee->lock, flags); 2079 2080 if ((ieee->ps == RTLLIB_PS_DISABLED || 2081 ieee->iw_mode != IW_MODE_INFRA || 2082 ieee->state != RTLLIB_LINKED)) { 2083 RT_TRACE(COMP_DBG, "=====>%s(): no need to ps,wake up!! " 2084 "ieee->ps is %d, ieee->iw_mode is %d, ieee->state" 2085 " is %d\n", __func__, ieee->ps, ieee->iw_mode, 2086 ieee->state); 2087 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 2088 rtllib_sta_wakeup(ieee, 1); 2089 2090 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 2091 } 2092 sleep = rtllib_sta_ps_sleep(ieee, &time); 2093 /* 2 wake, 1 sleep, 0 do nothing */ 2094 if (sleep == 0) 2095 goto out; 2096 if (sleep == 1) { 2097 if (ieee->sta_sleep == LPS_IS_SLEEP) { 2098 ieee->enter_sleep_state(ieee->dev, time); 2099 } else if (ieee->sta_sleep == LPS_IS_WAKE) { 2100 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 2101 2102 if (ieee->ps_is_queue_empty(ieee->dev)) { 2103 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND; 2104 ieee->ack_tx_to_ieee = 1; 2105 rtllib_sta_ps_send_null_frame(ieee, 1); 2106 ieee->ps_time = time; 2107 } 2108 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 2109 2110 } 2111 2112 ieee->bAwakePktSent = false; 2113 2114 } else if (sleep == 2) { 2115 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 2116 2117 rtllib_sta_wakeup(ieee, 1); 2118 2119 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 2120 } 2121 2122out: 2123 spin_unlock_irqrestore(&ieee->lock, flags); 2124 2125} 2126 2127void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl) 2128{ 2129 if (ieee->sta_sleep == LPS_IS_WAKE) { 2130 if (nl) { 2131 if (ieee->pHTInfo->IOTAction & 2132 HT_IOT_ACT_NULL_DATA_POWER_SAVING) { 2133 ieee->ack_tx_to_ieee = 1; 2134 rtllib_sta_ps_send_null_frame(ieee, 0); 2135 } else { 2136 ieee->ack_tx_to_ieee = 1; 2137 rtllib_sta_ps_send_pspoll_frame(ieee); 2138 } 2139 } 2140 return; 2141 2142 } 2143 2144 if (ieee->sta_sleep == LPS_IS_SLEEP) 2145 ieee->sta_wake_up(ieee->dev); 2146 if (nl) { 2147 if (ieee->pHTInfo->IOTAction & 2148 HT_IOT_ACT_NULL_DATA_POWER_SAVING) { 2149 ieee->ack_tx_to_ieee = 1; 2150 rtllib_sta_ps_send_null_frame(ieee, 0); 2151 } else { 2152 ieee->ack_tx_to_ieee = 1; 2153 ieee->polling = true; 2154 rtllib_sta_ps_send_pspoll_frame(ieee); 2155 } 2156 2157 } else { 2158 ieee->sta_sleep = LPS_IS_WAKE; 2159 ieee->polling = false; 2160 } 2161} 2162 2163void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success) 2164{ 2165 unsigned long flags, flags2; 2166 2167 spin_lock_irqsave(&ieee->lock, flags); 2168 2169 if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) { 2170 /* Null frame with PS bit set */ 2171 if (success) { 2172 ieee->sta_sleep = LPS_IS_SLEEP; 2173 ieee->enter_sleep_state(ieee->dev, ieee->ps_time); 2174 } 2175 /* if the card report not success we can't be sure the AP 2176 * has not RXed so we can't assume the AP believe us awake 2177 */ 2178 } else {/* 21112005 - tx again null without PS bit if lost */ 2179 2180 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) { 2181 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 2182 if (ieee->pHTInfo->IOTAction & 2183 HT_IOT_ACT_NULL_DATA_POWER_SAVING) 2184 rtllib_sta_ps_send_null_frame(ieee, 0); 2185 else 2186 rtllib_sta_ps_send_pspoll_frame(ieee); 2187 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 2188 } 2189 } 2190 spin_unlock_irqrestore(&ieee->lock, flags); 2191} 2192EXPORT_SYMBOL(rtllib_ps_tx_ack); 2193 2194static void rtllib_process_action(struct rtllib_device *ieee, struct sk_buff *skb) 2195{ 2196 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; 2197 u8 *act = rtllib_get_payload((struct rtllib_hdr *)header); 2198 u8 category = 0; 2199 2200 if (act == NULL) { 2201 RTLLIB_DEBUG(RTLLIB_DL_ERR, "error to get payload of " 2202 "action frame\n"); 2203 return; 2204 } 2205 2206 category = *act; 2207 act++; 2208 switch (category) { 2209 case ACT_CAT_BA: 2210 switch (*act) { 2211 case ACT_ADDBAREQ: 2212 rtllib_rx_ADDBAReq(ieee, skb); 2213 break; 2214 case ACT_ADDBARSP: 2215 rtllib_rx_ADDBARsp(ieee, skb); 2216 break; 2217 case ACT_DELBA: 2218 rtllib_rx_DELBA(ieee, skb); 2219 break; 2220 } 2221 break; 2222 default: 2223 break; 2224 } 2225 return; 2226} 2227 2228inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb, 2229 struct rtllib_rx_stats *rx_stats) 2230{ 2231 u16 errcode; 2232 int aid; 2233 u8 *ies; 2234 struct rtllib_assoc_response_frame *assoc_resp; 2235 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; 2236 2237 RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n", 2238 WLAN_FC_GET_STYPE(header->frame_ctl)); 2239 2240 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 2241 ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED && 2242 (ieee->iw_mode == IW_MODE_INFRA)) { 2243 errcode = assoc_parse(ieee, skb, &aid); 2244 if (0 == errcode) { 2245 struct rtllib_network *network = 2246 kzalloc(sizeof(struct rtllib_network), 2247 GFP_ATOMIC); 2248 2249 if (!network) 2250 return 1; 2251 ieee->state = RTLLIB_LINKED; 2252 ieee->assoc_id = aid; 2253 ieee->softmac_stats.rx_ass_ok++; 2254 /* station support qos */ 2255 /* Let the register setting default with Legacy station */ 2256 assoc_resp = (struct rtllib_assoc_response_frame *)skb->data; 2257 if (ieee->current_network.qos_data.supported == 1) { 2258 if (rtllib_parse_info_param(ieee, assoc_resp->info_element, 2259 rx_stats->len - sizeof(*assoc_resp), 2260 network, rx_stats)) { 2261 kfree(network); 2262 return 1; 2263 } 2264 memcpy(ieee->pHTInfo->PeerHTCapBuf, 2265 network->bssht.bdHTCapBuf, 2266 network->bssht.bdHTCapLen); 2267 memcpy(ieee->pHTInfo->PeerHTInfoBuf, 2268 network->bssht.bdHTInfoBuf, 2269 network->bssht.bdHTInfoLen); 2270 if (ieee->handle_assoc_response != NULL) 2271 ieee->handle_assoc_response(ieee->dev, 2272 (struct rtllib_assoc_response_frame *)header, 2273 network); 2274 } 2275 kfree(network); 2276 2277 kfree(ieee->assocresp_ies); 2278 ieee->assocresp_ies = NULL; 2279 ies = &(assoc_resp->info_element[0].id); 2280 ieee->assocresp_ies_len = (skb->data + skb->len) - ies; 2281 ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len, 2282 GFP_ATOMIC); 2283 if (ieee->assocresp_ies) 2284 memcpy(ieee->assocresp_ies, ies, 2285 ieee->assocresp_ies_len); 2286 else { 2287 printk(KERN_INFO "%s()Warning: can't alloc " 2288 "memory for assocresp_ies\n", __func__); 2289 ieee->assocresp_ies_len = 0; 2290 } 2291 rtllib_associate_complete(ieee); 2292 } else { 2293 /* aid could not been allocated */ 2294 ieee->softmac_stats.rx_ass_err++; 2295 printk(KERN_INFO "Association response status code 0x%x\n", 2296 errcode); 2297 RTLLIB_DEBUG_MGMT( 2298 "Association response status code 0x%x\n", 2299 errcode); 2300 if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT) 2301 queue_delayed_work_rsl(ieee->wq, 2302 &ieee->associate_procedure_wq, 0); 2303 else 2304 rtllib_associate_abort(ieee); 2305 } 2306 } 2307 return 0; 2308} 2309 2310inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb, 2311 struct rtllib_rx_stats *rx_stats) 2312{ 2313 u16 errcode; 2314 u8 *challenge; 2315 int chlen = 0; 2316 bool bSupportNmode = true, bHalfSupportNmode = false; 2317 2318 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) { 2319 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING && 2320 (ieee->iw_mode == IW_MODE_INFRA)) { 2321 RTLLIB_DEBUG_MGMT("Received authentication response"); 2322 2323 errcode = auth_parse(skb, &challenge, &chlen); 2324 if (0 == errcode) { 2325 if (ieee->open_wep || !challenge) { 2326 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED; 2327 ieee->softmac_stats.rx_auth_rs_ok++; 2328 if (!(ieee->pHTInfo->IOTAction & 2329 HT_IOT_ACT_PURE_N_MODE)) { 2330 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) { 2331 if (IsHTHalfNmodeAPs(ieee)) { 2332 bSupportNmode = true; 2333 bHalfSupportNmode = true; 2334 } else { 2335 bSupportNmode = false; 2336 bHalfSupportNmode = false; 2337 } 2338 } 2339 } 2340 /* Dummy wirless mode setting to avoid 2341 * encryption issue */ 2342 if (bSupportNmode) { 2343 ieee->SetWirelessMode(ieee->dev, 2344 ieee->current_network.mode); 2345 } else { 2346 /*TODO*/ 2347 ieee->SetWirelessMode(ieee->dev, 2348 IEEE_G); 2349 } 2350 2351 if (ieee->current_network.mode == 2352 IEEE_N_24G && bHalfSupportNmode) { 2353 printk(KERN_INFO "======>enter " 2354 "half N mode\n"); 2355 ieee->bHalfWirelessN24GMode = 2356 true; 2357 } else 2358 ieee->bHalfWirelessN24GMode = 2359 false; 2360 2361 rtllib_associate_step2(ieee); 2362 } else { 2363 rtllib_auth_challenge(ieee, challenge, 2364 chlen); 2365 } 2366 } else { 2367 ieee->softmac_stats.rx_auth_rs_err++; 2368 RTLLIB_DEBUG_MGMT("Authentication respose" 2369 " status code 0x%x", errcode); 2370 2371 printk(KERN_INFO "Authentication respose " 2372 "status code 0x%x", errcode); 2373 rtllib_associate_abort(ieee); 2374 } 2375 2376 } else if (ieee->iw_mode == IW_MODE_MASTER) { 2377 rtllib_rx_auth_rq(ieee, skb); 2378 } 2379 } 2380 return 0; 2381} 2382 2383inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb) 2384{ 2385 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; 2386 2387 if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) 2388 return 0; 2389 2390 /* FIXME for now repeat all the association procedure 2391 * both for disassociation and deauthentication 2392 */ 2393 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 2394 ieee->state == RTLLIB_LINKED && 2395 (ieee->iw_mode == IW_MODE_INFRA)) { 2396 printk(KERN_INFO "==========>received disassoc/deauth(%x) " 2397 "frame, reason code:%x\n", 2398 WLAN_FC_GET_STYPE(header->frame_ctl), 2399 ((struct rtllib_disassoc *)skb->data)->reason); 2400 ieee->state = RTLLIB_ASSOCIATING; 2401 ieee->softmac_stats.reassoc++; 2402 ieee->is_roaming = true; 2403 ieee->LinkDetectInfo.bBusyTraffic = false; 2404 rtllib_disassociate(ieee); 2405 RemovePeerTS(ieee, header->addr2); 2406 if (ieee->LedControlHandler != NULL) 2407 ieee->LedControlHandler(ieee->dev, 2408 LED_CTL_START_TO_LINK); 2409 2410 if (!(ieee->rtllib_ap_sec_type(ieee) & 2411 (SEC_ALG_CCMP|SEC_ALG_TKIP))) 2412 queue_delayed_work_rsl(ieee->wq, 2413 &ieee->associate_procedure_wq, 5); 2414 } 2415 return 0; 2416} 2417 2418inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee, 2419 struct sk_buff *skb, 2420 struct rtllib_rx_stats *rx_stats, u16 type, 2421 u16 stype) 2422{ 2423 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; 2424 2425 if (!ieee->proto_started) 2426 return 0; 2427 2428 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) { 2429 case RTLLIB_STYPE_ASSOC_RESP: 2430 case RTLLIB_STYPE_REASSOC_RESP: 2431 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1) 2432 return 1; 2433 break; 2434 case RTLLIB_STYPE_ASSOC_REQ: 2435 case RTLLIB_STYPE_REASSOC_REQ: 2436 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 2437 ieee->iw_mode == IW_MODE_MASTER) 2438 rtllib_rx_assoc_rq(ieee, skb); 2439 break; 2440 case RTLLIB_STYPE_AUTH: 2441 rtllib_rx_auth(ieee, skb, rx_stats); 2442 break; 2443 case RTLLIB_STYPE_DISASSOC: 2444 case RTLLIB_STYPE_DEAUTH: 2445 rtllib_rx_deauth(ieee, skb); 2446 break; 2447 case RTLLIB_STYPE_MANAGE_ACT: 2448 rtllib_process_action(ieee, skb); 2449 break; 2450 default: 2451 return -1; 2452 break; 2453 } 2454 return 0; 2455} 2456 2457/* following are for a simpler TX queue management. 2458 * Instead of using netif_[stop/wake]_queue the driver 2459 * will use these two functions (plus a reset one), that 2460 * will internally use the kernel netif_* and takes 2461 * care of the ieee802.11 fragmentation. 2462 * So the driver receives a fragment per time and might 2463 * call the stop function when it wants to not 2464 * have enough room to TX an entire packet. 2465 * This might be useful if each fragment needs it's own 2466 * descriptor, thus just keep a total free memory > than 2467 * the max fragmentation threshold is not enough.. If the 2468 * ieee802.11 stack passed a TXB struct then you need 2469 * to keep N free descriptors where 2470 * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD 2471 * In this way you need just one and the 802.11 stack 2472 * will take care of buffering fragments and pass them to 2473 * to the driver later, when it wakes the queue. 2474 */ 2475void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee) 2476{ 2477 2478 unsigned int queue_index = txb->queue_index; 2479 unsigned long flags; 2480 int i; 2481 struct cb_desc *tcb_desc = NULL; 2482 unsigned long queue_len = 0; 2483 2484 spin_lock_irqsave(&ieee->lock, flags); 2485 2486 /* called with 2nd parm 0, no tx mgmt lock required */ 2487 rtllib_sta_wakeup(ieee, 0); 2488 2489 /* update the tx status */ 2490 tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb + 2491 MAX_DEV_ADDR_SIZE); 2492 if (tcb_desc->bMulticast) 2493 ieee->stats.multicast++; 2494 2495 /* if xmit available, just xmit it immediately, else just insert it to 2496 * the wait queue */ 2497 for (i = 0; i < txb->nr_frags; i++) { 2498 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]); 2499 if ((queue_len != 0) ||\ 2500 (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) || 2501 (ieee->queue_stop)) { 2502 /* insert the skb packet to the wait queue */ 2503 /* as for the completion function, it does not need 2504 * to check it any more. 2505 * */ 2506 if (queue_len < 200) 2507 skb_queue_tail(&ieee->skb_waitQ[queue_index], 2508 txb->fragments[i]); 2509 else 2510 kfree_skb(txb->fragments[i]); 2511 } else { 2512 ieee->softmac_data_hard_start_xmit( 2513 txb->fragments[i], 2514 ieee->dev, ieee->rate); 2515 } 2516 } 2517 2518 rtllib_txb_free(txb); 2519 2520 spin_unlock_irqrestore(&ieee->lock, flags); 2521 2522} 2523 2524/* called with ieee->lock acquired */ 2525static void rtllib_resume_tx(struct rtllib_device *ieee) 2526{ 2527 int i; 2528 2529 for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags; 2530 i++) { 2531 2532 if (ieee->queue_stop) { 2533 ieee->tx_pending.frag = i; 2534 return; 2535 } else { 2536 2537 ieee->softmac_data_hard_start_xmit( 2538 ieee->tx_pending.txb->fragments[i], 2539 ieee->dev, ieee->rate); 2540 ieee->stats.tx_packets++; 2541 } 2542 } 2543 2544 rtllib_txb_free(ieee->tx_pending.txb); 2545 ieee->tx_pending.txb = NULL; 2546} 2547 2548 2549void rtllib_reset_queue(struct rtllib_device *ieee) 2550{ 2551 unsigned long flags; 2552 2553 spin_lock_irqsave(&ieee->lock, flags); 2554 init_mgmt_queue(ieee); 2555 if (ieee->tx_pending.txb) { 2556 rtllib_txb_free(ieee->tx_pending.txb); 2557 ieee->tx_pending.txb = NULL; 2558 } 2559 ieee->queue_stop = 0; 2560 spin_unlock_irqrestore(&ieee->lock, flags); 2561 2562} 2563EXPORT_SYMBOL(rtllib_reset_queue); 2564 2565void rtllib_wake_queue(struct rtllib_device *ieee) 2566{ 2567 2568 unsigned long flags; 2569 struct sk_buff *skb; 2570 struct rtllib_hdr_3addr *header; 2571 2572 spin_lock_irqsave(&ieee->lock, flags); 2573 if (!ieee->queue_stop) 2574 goto exit; 2575 2576 ieee->queue_stop = 0; 2577 2578 if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) { 2579 while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) { 2580 2581 header = (struct rtllib_hdr_3addr *) skb->data; 2582 2583 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 2584 2585 if (ieee->seq_ctrl[0] == 0xFFF) 2586 ieee->seq_ctrl[0] = 0; 2587 else 2588 ieee->seq_ctrl[0]++; 2589 2590 ieee->softmac_data_hard_start_xmit(skb, ieee->dev, 2591 ieee->basic_rate); 2592 } 2593 } 2594 if (!ieee->queue_stop && ieee->tx_pending.txb) 2595 rtllib_resume_tx(ieee); 2596 2597 if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) { 2598 ieee->softmac_stats.swtxawake++; 2599 netif_wake_queue(ieee->dev); 2600 } 2601 2602exit: 2603 spin_unlock_irqrestore(&ieee->lock, flags); 2604} 2605 2606 2607void rtllib_stop_queue(struct rtllib_device *ieee) 2608{ 2609 2610 if (!netif_queue_stopped(ieee->dev)) { 2611 netif_stop_queue(ieee->dev); 2612 ieee->softmac_stats.swtxstop++; 2613 } 2614 ieee->queue_stop = 1; 2615 2616} 2617 2618void rtllib_stop_all_queues(struct rtllib_device *ieee) 2619{ 2620 unsigned int i; 2621 2622 for (i = 0; i < ieee->dev->num_tx_queues; i++) 2623 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies; 2624 2625 netif_tx_stop_all_queues(ieee->dev); 2626} 2627 2628void rtllib_wake_all_queues(struct rtllib_device *ieee) 2629{ 2630 netif_tx_wake_all_queues(ieee->dev); 2631} 2632 2633inline void rtllib_randomize_cell(struct rtllib_device *ieee) 2634{ 2635 2636 random_ether_addr(ieee->current_network.bssid); 2637} 2638 2639/* called in user context only */ 2640void rtllib_start_master_bss(struct rtllib_device *ieee) 2641{ 2642 ieee->assoc_id = 1; 2643 2644 if (ieee->current_network.ssid_len == 0) { 2645 strncpy(ieee->current_network.ssid, 2646 RTLLIB_DEFAULT_TX_ESSID, 2647 IW_ESSID_MAX_SIZE); 2648 2649 ieee->current_network.ssid_len = 2650 strlen(RTLLIB_DEFAULT_TX_ESSID); 2651 ieee->ssid_set = 1; 2652 } 2653 2654 memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN); 2655 2656 ieee->set_chan(ieee->dev, ieee->current_network.channel); 2657 ieee->state = RTLLIB_LINKED; 2658 ieee->link_change(ieee->dev); 2659 notify_wx_assoc_event(ieee); 2660 2661 if (ieee->data_hard_resume) 2662 ieee->data_hard_resume(ieee->dev); 2663 2664 netif_carrier_on(ieee->dev); 2665} 2666 2667static void rtllib_start_monitor_mode(struct rtllib_device *ieee) 2668{ 2669 /* reset hardware status */ 2670 if (ieee->raw_tx) { 2671 if (ieee->data_hard_resume) 2672 ieee->data_hard_resume(ieee->dev); 2673 2674 netif_carrier_on(ieee->dev); 2675 } 2676} 2677 2678static void rtllib_start_ibss_wq(void *data) 2679{ 2680 struct rtllib_device *ieee = container_of_dwork_rsl(data, 2681 struct rtllib_device, start_ibss_wq); 2682 /* iwconfig mode ad-hoc will schedule this and return 2683 * on the other hand this will block further iwconfig SET 2684 * operations because of the wx_sem hold. 2685 * Anyway some most set operations set a flag to speed-up 2686 * (abort) this wq (when syncro scanning) before sleeping 2687 * on the semaphore 2688 */ 2689 if (!ieee->proto_started) { 2690 printk(KERN_INFO "==========oh driver down return\n"); 2691 return; 2692 } 2693 down(&ieee->wx_sem); 2694 2695 if (ieee->current_network.ssid_len == 0) { 2696 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID); 2697 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID); 2698 ieee->ssid_set = 1; 2699 } 2700 2701 ieee->state = RTLLIB_NOLINK; 2702 ieee->mode = IEEE_G; 2703 /* check if we have this cell in our network list */ 2704 rtllib_softmac_check_all_nets(ieee); 2705 2706 2707 /* if not then the state is not linked. Maybe the user switched to 2708 * ad-hoc mode just after being in monitor mode, or just after 2709 * being very few time in managed mode (so the card have had no 2710 * time to scan all the chans..) or we have just run up the iface 2711 * after setting ad-hoc mode. So we have to give another try.. 2712 * Here, in ibss mode, should be safe to do this without extra care 2713 * (in bss mode we had to make sure no-one tried to associate when 2714 * we had just checked the ieee->state and we was going to start the 2715 * scan) because in ibss mode the rtllib_new_net function, when 2716 * finds a good net, just set the ieee->state to RTLLIB_LINKED, 2717 * so, at worst, we waste a bit of time to initiate an unneeded syncro 2718 * scan, that will stop at the first round because it sees the state 2719 * associated. 2720 */ 2721 if (ieee->state == RTLLIB_NOLINK) 2722 rtllib_start_scan_syncro(ieee, 0); 2723 2724 /* the network definitively is not here.. create a new cell */ 2725 if (ieee->state == RTLLIB_NOLINK) { 2726 printk(KERN_INFO "creating new IBSS cell\n"); 2727 ieee->current_network.channel = ieee->IbssStartChnl; 2728 if (!ieee->wap_set) 2729 rtllib_randomize_cell(ieee); 2730 2731 if (ieee->modulation & RTLLIB_CCK_MODULATION) { 2732 2733 ieee->current_network.rates_len = 4; 2734 2735 ieee->current_network.rates[0] = 2736 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB; 2737 ieee->current_network.rates[1] = 2738 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB; 2739 ieee->current_network.rates[2] = 2740 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB; 2741 ieee->current_network.rates[3] = 2742 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB; 2743 2744 } else 2745 ieee->current_network.rates_len = 0; 2746 2747 if (ieee->modulation & RTLLIB_OFDM_MODULATION) { 2748 ieee->current_network.rates_ex_len = 8; 2749 2750 ieee->current_network.rates_ex[0] = 2751 RTLLIB_OFDM_RATE_6MB; 2752 ieee->current_network.rates_ex[1] = 2753 RTLLIB_OFDM_RATE_9MB; 2754 ieee->current_network.rates_ex[2] = 2755 RTLLIB_OFDM_RATE_12MB; 2756 ieee->current_network.rates_ex[3] = 2757 RTLLIB_OFDM_RATE_18MB; 2758 ieee->current_network.rates_ex[4] = 2759 RTLLIB_OFDM_RATE_24MB; 2760 ieee->current_network.rates_ex[5] = 2761 RTLLIB_OFDM_RATE_36MB; 2762 ieee->current_network.rates_ex[6] = 2763 RTLLIB_OFDM_RATE_48MB; 2764 ieee->current_network.rates_ex[7] = 2765 RTLLIB_OFDM_RATE_54MB; 2766 2767 ieee->rate = 108; 2768 } else { 2769 ieee->current_network.rates_ex_len = 0; 2770 ieee->rate = 22; 2771 } 2772 2773 ieee->current_network.qos_data.supported = 0; 2774 ieee->SetWirelessMode(ieee->dev, IEEE_G); 2775 ieee->current_network.mode = ieee->mode; 2776 ieee->current_network.atim_window = 0; 2777 ieee->current_network.capability = WLAN_CAPABILITY_IBSS; 2778 } 2779 2780 printk(KERN_INFO "%s(): ieee->mode = %d\n", __func__, ieee->mode); 2781 if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G)) 2782 HTUseDefaultSetting(ieee); 2783 else 2784 ieee->pHTInfo->bCurrentHTSupport = false; 2785 2786 ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS, 2787 (u8 *)(&ieee->state)); 2788 2789 ieee->state = RTLLIB_LINKED; 2790 ieee->link_change(ieee->dev); 2791 2792 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 2793 if (ieee->LedControlHandler != NULL) 2794 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK); 2795 2796 rtllib_start_send_beacons(ieee); 2797 2798 notify_wx_assoc_event(ieee); 2799 2800 if (ieee->data_hard_resume) 2801 ieee->data_hard_resume(ieee->dev); 2802 2803 netif_carrier_on(ieee->dev); 2804 2805 up(&ieee->wx_sem); 2806} 2807 2808inline void rtllib_start_ibss(struct rtllib_device *ieee) 2809{ 2810 queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, MSECS(150)); 2811} 2812 2813/* this is called only in user context, with wx_sem held */ 2814void rtllib_start_bss(struct rtllib_device *ieee) 2815{ 2816 unsigned long flags; 2817 2818 if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) { 2819 if (!ieee->bGlobalDomain) 2820 return; 2821 } 2822 /* check if we have already found the net we 2823 * are interested in (if any). 2824 * if not (we are disassociated and we are not 2825 * in associating / authenticating phase) start the background scanning. 2826 */ 2827 rtllib_softmac_check_all_nets(ieee); 2828 2829 /* ensure no-one start an associating process (thus setting 2830 * the ieee->state to rtllib_ASSOCIATING) while we 2831 * have just checked it and we are going to enable scan. 2832 * The rtllib_new_net function is always called with 2833 * lock held (from both rtllib_softmac_check_all_nets and 2834 * the rx path), so we cannot be in the middle of such function 2835 */ 2836 spin_lock_irqsave(&ieee->lock, flags); 2837 2838 if (ieee->state == RTLLIB_NOLINK) 2839 rtllib_start_scan(ieee); 2840 spin_unlock_irqrestore(&ieee->lock, flags); 2841} 2842 2843static void rtllib_link_change_wq(void *data) 2844{ 2845 struct rtllib_device *ieee = container_of_dwork_rsl(data, 2846 struct rtllib_device, link_change_wq); 2847 ieee->link_change(ieee->dev); 2848} 2849/* called only in userspace context */ 2850void rtllib_disassociate(struct rtllib_device *ieee) 2851{ 2852 netif_carrier_off(ieee->dev); 2853 if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE) 2854 rtllib_reset_queue(ieee); 2855 2856 if (ieee->data_hard_stop) 2857 ieee->data_hard_stop(ieee->dev); 2858 if (IS_DOT11D_ENABLE(ieee)) 2859 Dot11d_Reset(ieee); 2860 ieee->state = RTLLIB_NOLINK; 2861 ieee->is_set_key = false; 2862 ieee->wap_set = 0; 2863 2864 queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0); 2865 2866 notify_wx_assoc_event(ieee); 2867} 2868 2869static void rtllib_associate_retry_wq(void *data) 2870{ 2871 struct rtllib_device *ieee = container_of_dwork_rsl(data, 2872 struct rtllib_device, associate_retry_wq); 2873 unsigned long flags; 2874 2875 down(&ieee->wx_sem); 2876 if (!ieee->proto_started) 2877 goto exit; 2878 2879 if (ieee->state != RTLLIB_ASSOCIATING_RETRY) 2880 goto exit; 2881 2882 /* until we do not set the state to RTLLIB_NOLINK 2883 * there are no possibility to have someone else trying 2884 * to start an association procedure (we get here with 2885 * ieee->state = RTLLIB_ASSOCIATING). 2886 * When we set the state to RTLLIB_NOLINK it is possible 2887 * that the RX path run an attempt to associate, but 2888 * both rtllib_softmac_check_all_nets and the 2889 * RX path works with ieee->lock held so there are no 2890 * problems. If we are still disassociated then start a scan. 2891 * the lock here is necessary to ensure no one try to start 2892 * an association procedure when we have just checked the 2893 * state and we are going to start the scan. 2894 */ 2895 ieee->beinretry = true; 2896 ieee->state = RTLLIB_NOLINK; 2897 2898 rtllib_softmac_check_all_nets(ieee); 2899 2900 spin_lock_irqsave(&ieee->lock, flags); 2901 2902 if (ieee->state == RTLLIB_NOLINK) 2903 rtllib_start_scan(ieee); 2904 spin_unlock_irqrestore(&ieee->lock, flags); 2905 2906 ieee->beinretry = false; 2907exit: 2908 up(&ieee->wx_sem); 2909} 2910 2911struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee) 2912{ 2913 u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 2914 2915 struct sk_buff *skb; 2916 struct rtllib_probe_response *b; 2917 2918 skb = rtllib_probe_resp(ieee, broadcast_addr); 2919 2920 if (!skb) 2921 return NULL; 2922 2923 b = (struct rtllib_probe_response *) skb->data; 2924 b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON); 2925 2926 return skb; 2927 2928} 2929 2930struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee) 2931{ 2932 struct sk_buff *skb; 2933 struct rtllib_probe_response *b; 2934 2935 skb = rtllib_get_beacon_(ieee); 2936 if (!skb) 2937 return NULL; 2938 2939 b = (struct rtllib_probe_response *) skb->data; 2940 b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 2941 2942 if (ieee->seq_ctrl[0] == 0xFFF) 2943 ieee->seq_ctrl[0] = 0; 2944 else 2945 ieee->seq_ctrl[0]++; 2946 2947 return skb; 2948} 2949EXPORT_SYMBOL(rtllib_get_beacon); 2950 2951void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag, 2952 u8 shutdown) 2953{ 2954 rtllib_stop_scan_syncro(ieee); 2955 down(&ieee->wx_sem); 2956 rtllib_stop_protocol(ieee, shutdown); 2957 up(&ieee->wx_sem); 2958} 2959EXPORT_SYMBOL(rtllib_softmac_stop_protocol); 2960 2961 2962void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown) 2963{ 2964 if (!ieee->proto_started) 2965 return; 2966 2967 if (shutdown) { 2968 ieee->proto_started = 0; 2969 ieee->proto_stoppping = 1; 2970 if (ieee->rtllib_ips_leave != NULL) 2971 ieee->rtllib_ips_leave(ieee->dev); 2972 } 2973 2974 rtllib_stop_send_beacons(ieee); 2975 del_timer_sync(&ieee->associate_timer); 2976 cancel_delayed_work(&ieee->associate_retry_wq); 2977 cancel_delayed_work(&ieee->start_ibss_wq); 2978 cancel_delayed_work(&ieee->link_change_wq); 2979 rtllib_stop_scan(ieee); 2980 2981 if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED) 2982 ieee->state = RTLLIB_NOLINK; 2983 2984 if (ieee->state == RTLLIB_LINKED) { 2985 if (ieee->iw_mode == IW_MODE_INFRA) 2986 SendDisassociation(ieee, 1, deauth_lv_ss); 2987 rtllib_disassociate(ieee); 2988 } 2989 2990 if (shutdown) { 2991 RemoveAllTS(ieee); 2992 ieee->proto_stoppping = 0; 2993 } 2994 kfree(ieee->assocreq_ies); 2995 ieee->assocreq_ies = NULL; 2996 ieee->assocreq_ies_len = 0; 2997 kfree(ieee->assocresp_ies); 2998 ieee->assocresp_ies = NULL; 2999 ieee->assocresp_ies_len = 0; 3000} 3001 3002void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag) 3003{ 3004 down(&ieee->wx_sem); 3005 rtllib_start_protocol(ieee); 3006 up(&ieee->wx_sem); 3007} 3008EXPORT_SYMBOL(rtllib_softmac_start_protocol); 3009 3010void rtllib_start_protocol(struct rtllib_device *ieee) 3011{ 3012 short ch = 0; 3013 int i = 0; 3014 3015 rtllib_update_active_chan_map(ieee); 3016 3017 if (ieee->proto_started) 3018 return; 3019 3020 ieee->proto_started = 1; 3021 3022 if (ieee->current_network.channel == 0) { 3023 do { 3024 ch++; 3025 if (ch > MAX_CHANNEL_NUMBER) 3026 return; /* no channel found */ 3027 } while (!ieee->active_channel_map[ch]); 3028 ieee->current_network.channel = ch; 3029 } 3030 3031 if (ieee->current_network.beacon_interval == 0) 3032 ieee->current_network.beacon_interval = 100; 3033 3034 for (i = 0; i < 17; i++) { 3035 ieee->last_rxseq_num[i] = -1; 3036 ieee->last_rxfrag_num[i] = -1; 3037 ieee->last_packet_time[i] = 0; 3038 } 3039 3040 if (ieee->UpdateBeaconInterruptHandler) 3041 ieee->UpdateBeaconInterruptHandler(ieee->dev, false); 3042 3043 ieee->wmm_acm = 0; 3044 /* if the user set the MAC of the ad-hoc cell and then 3045 * switch to managed mode, shall we make sure that association 3046 * attempts does not fail just because the user provide the essid 3047 * and the nic is still checking for the AP MAC ?? 3048 */ 3049 if (ieee->iw_mode == IW_MODE_INFRA) { 3050 rtllib_start_bss(ieee); 3051 } else if (ieee->iw_mode == IW_MODE_ADHOC) { 3052 if (ieee->UpdateBeaconInterruptHandler) 3053 ieee->UpdateBeaconInterruptHandler(ieee->dev, true); 3054 3055 rtllib_start_ibss(ieee); 3056 3057 } else if (ieee->iw_mode == IW_MODE_MASTER) { 3058 rtllib_start_master_bss(ieee); 3059 } else if (ieee->iw_mode == IW_MODE_MONITOR) { 3060 rtllib_start_monitor_mode(ieee); 3061 } 3062} 3063 3064void rtllib_softmac_init(struct rtllib_device *ieee) 3065{ 3066 int i; 3067 3068 memset(&ieee->current_network, 0, sizeof(struct rtllib_network)); 3069 3070 ieee->state = RTLLIB_NOLINK; 3071 for (i = 0; i < 5; i++) 3072 ieee->seq_ctrl[i] = 0; 3073 ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC); 3074 if (!ieee->pDot11dInfo) 3075 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for DOT11D\n"); 3076 ieee->LinkDetectInfo.SlotIndex = 0; 3077 ieee->LinkDetectInfo.SlotNum = 2; 3078 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0; 3079 ieee->LinkDetectInfo.NumRecvDataInPeriod = 0; 3080 ieee->LinkDetectInfo.NumTxOkInPeriod = 0; 3081 ieee->LinkDetectInfo.NumRxOkInPeriod = 0; 3082 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0; 3083 ieee->bIsAggregateFrame = false; 3084 ieee->assoc_id = 0; 3085 ieee->queue_stop = 0; 3086 ieee->scanning_continue = 0; 3087 ieee->softmac_features = 0; 3088 ieee->wap_set = 0; 3089 ieee->ssid_set = 0; 3090 ieee->proto_started = 0; 3091 ieee->proto_stoppping = 0; 3092 ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE; 3093 ieee->rate = 22; 3094 ieee->ps = RTLLIB_PS_DISABLED; 3095 ieee->sta_sleep = LPS_IS_WAKE; 3096 3097 ieee->Regdot11HTOperationalRateSet[0] = 0xff; 3098 ieee->Regdot11HTOperationalRateSet[1] = 0xff; 3099 ieee->Regdot11HTOperationalRateSet[4] = 0x01; 3100 3101 ieee->Regdot11TxHTOperationalRateSet[0] = 0xff; 3102 ieee->Regdot11TxHTOperationalRateSet[1] = 0xff; 3103 ieee->Regdot11TxHTOperationalRateSet[4] = 0x01; 3104 3105 ieee->FirstIe_InScan = false; 3106 ieee->actscanning = false; 3107 ieee->beinretry = false; 3108 ieee->is_set_key = false; 3109 init_mgmt_queue(ieee); 3110 3111 ieee->sta_edca_param[0] = 0x0000A403; 3112 ieee->sta_edca_param[1] = 0x0000A427; 3113 ieee->sta_edca_param[2] = 0x005E4342; 3114 ieee->sta_edca_param[3] = 0x002F3262; 3115 ieee->aggregation = true; 3116 ieee->enable_rx_imm_BA = true; 3117 ieee->tx_pending.txb = NULL; 3118 3119 _setup_timer(&ieee->associate_timer, 3120 rtllib_associate_abort_cb, 3121 (unsigned long) ieee); 3122 3123 _setup_timer(&ieee->beacon_timer, 3124 rtllib_send_beacon_cb, 3125 (unsigned long) ieee); 3126 3127 3128 ieee->wq = create_workqueue(DRV_NAME); 3129 3130 INIT_DELAYED_WORK_RSL(&ieee->link_change_wq, 3131 (void *)rtllib_link_change_wq, ieee); 3132 INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq, 3133 (void *)rtllib_start_ibss_wq, ieee); 3134 INIT_WORK_RSL(&ieee->associate_complete_wq, 3135 (void *)rtllib_associate_complete_wq, ieee); 3136 INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq, 3137 (void *)rtllib_associate_procedure_wq, ieee); 3138 INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq, 3139 (void *)rtllib_softmac_scan_wq, ieee); 3140 INIT_DELAYED_WORK_RSL(&ieee->softmac_hint11d_wq, 3141 (void *)rtllib_softmac_hint11d_wq, ieee); 3142 INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq, 3143 (void *)rtllib_associate_retry_wq, ieee); 3144 INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq, 3145 ieee); 3146 3147 sema_init(&ieee->wx_sem, 1); 3148 sema_init(&ieee->scan_sem, 1); 3149 sema_init(&ieee->ips_sem, 1); 3150 3151 spin_lock_init(&ieee->mgmt_tx_lock); 3152 spin_lock_init(&ieee->beacon_lock); 3153 3154 tasklet_init(&ieee->ps_task, 3155 (void(*)(unsigned long)) rtllib_sta_ps, 3156 (unsigned long)ieee); 3157 3158} 3159 3160void rtllib_softmac_free(struct rtllib_device *ieee) 3161{ 3162 down(&ieee->wx_sem); 3163 kfree(ieee->pDot11dInfo); 3164 ieee->pDot11dInfo = NULL; 3165 del_timer_sync(&ieee->associate_timer); 3166 3167 cancel_delayed_work(&ieee->associate_retry_wq); 3168 destroy_workqueue(ieee->wq); 3169 up(&ieee->wx_sem); 3170} 3171 3172/******************************************************** 3173 * Start of WPA code. * 3174 * this is stolen from the ipw2200 driver * 3175 ********************************************************/ 3176 3177 3178static int rtllib_wpa_enable(struct rtllib_device *ieee, int value) 3179{ 3180 /* This is called when wpa_supplicant loads and closes the driver 3181 * interface. */ 3182 printk(KERN_INFO "%s WPA\n", value ? "enabling" : "disabling"); 3183 ieee->wpa_enabled = value; 3184 memset(ieee->ap_mac_addr, 0, 6); 3185 return 0; 3186} 3187 3188 3189static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie, 3190 int wpa_ie_len) 3191{ 3192 /* make sure WPA is enabled */ 3193 rtllib_wpa_enable(ieee, 1); 3194 3195 rtllib_disassociate(ieee); 3196} 3197 3198 3199static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason) 3200{ 3201 3202 int ret = 0; 3203 3204 switch (command) { 3205 case IEEE_MLME_STA_DEAUTH: 3206 break; 3207 3208 case IEEE_MLME_STA_DISASSOC: 3209 rtllib_disassociate(ieee); 3210 break; 3211 3212 default: 3213 printk(KERN_INFO "Unknown MLME request: %d\n", command); 3214 ret = -EOPNOTSUPP; 3215 } 3216 3217 return ret; 3218} 3219 3220 3221static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee, 3222 struct ieee_param *param, int plen) 3223{ 3224 u8 *buf; 3225 3226 if (param->u.wpa_ie.len > MAX_WPA_IE_LEN || 3227 (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL)) 3228 return -EINVAL; 3229 3230 if (param->u.wpa_ie.len) { 3231 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len, 3232 GFP_KERNEL); 3233 if (buf == NULL) 3234 return -ENOMEM; 3235 3236 kfree(ieee->wpa_ie); 3237 ieee->wpa_ie = buf; 3238 ieee->wpa_ie_len = param->u.wpa_ie.len; 3239 } else { 3240 kfree(ieee->wpa_ie); 3241 ieee->wpa_ie = NULL; 3242 ieee->wpa_ie_len = 0; 3243 } 3244 3245 rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len); 3246 return 0; 3247} 3248 3249#define AUTH_ALG_OPEN_SYSTEM 0x1 3250#define AUTH_ALG_SHARED_KEY 0x2 3251#define AUTH_ALG_LEAP 0x4 3252static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value) 3253{ 3254 3255 struct rtllib_security sec = { 3256 .flags = SEC_AUTH_MODE, 3257 }; 3258 3259 if (value & AUTH_ALG_SHARED_KEY) { 3260 sec.auth_mode = WLAN_AUTH_SHARED_KEY; 3261 ieee->open_wep = 0; 3262 ieee->auth_mode = 1; 3263 } else if (value & AUTH_ALG_OPEN_SYSTEM) { 3264 sec.auth_mode = WLAN_AUTH_OPEN; 3265 ieee->open_wep = 1; 3266 ieee->auth_mode = 0; 3267 } else if (value & AUTH_ALG_LEAP) { 3268 sec.auth_mode = WLAN_AUTH_LEAP >> 6; 3269 ieee->open_wep = 1; 3270 ieee->auth_mode = 2; 3271 } 3272 3273 3274 if (ieee->set_security) 3275 ieee->set_security(ieee->dev, &sec); 3276 3277 return 0; 3278} 3279 3280static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value) 3281{ 3282 int ret = 0; 3283 unsigned long flags; 3284 3285 switch (name) { 3286 case IEEE_PARAM_WPA_ENABLED: 3287 ret = rtllib_wpa_enable(ieee, value); 3288 break; 3289 3290 case IEEE_PARAM_TKIP_COUNTERMEASURES: 3291 ieee->tkip_countermeasures = value; 3292 break; 3293 3294 case IEEE_PARAM_DROP_UNENCRYPTED: 3295 { 3296 /* HACK: 3297 * 3298 * wpa_supplicant calls set_wpa_enabled when the driver 3299 * is loaded and unloaded, regardless of if WPA is being 3300 * used. No other calls are made which can be used to 3301 * determine if encryption will be used or not prior to 3302 * association being expected. If encryption is not being 3303 * used, drop_unencrypted is set to false, else true -- we 3304 * can use this to determine if the CAP_PRIVACY_ON bit should 3305 * be set. 3306 */ 3307 struct rtllib_security sec = { 3308 .flags = SEC_ENABLED, 3309 .enabled = value, 3310 }; 3311 ieee->drop_unencrypted = value; 3312 /* We only change SEC_LEVEL for open mode. Others 3313 * are set by ipw_wpa_set_encryption. 3314 */ 3315 if (!value) { 3316 sec.flags |= SEC_LEVEL; 3317 sec.level = SEC_LEVEL_0; 3318 } else { 3319 sec.flags |= SEC_LEVEL; 3320 sec.level = SEC_LEVEL_1; 3321 } 3322 if (ieee->set_security) 3323 ieee->set_security(ieee->dev, &sec); 3324 break; 3325 } 3326 3327 case IEEE_PARAM_PRIVACY_INVOKED: 3328 ieee->privacy_invoked = value; 3329 break; 3330 3331 case IEEE_PARAM_AUTH_ALGS: 3332 ret = rtllib_wpa_set_auth_algs(ieee, value); 3333 break; 3334 3335 case IEEE_PARAM_IEEE_802_1X: 3336 ieee->ieee802_1x = value; 3337 break; 3338 case IEEE_PARAM_WPAX_SELECT: 3339 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags); 3340 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags); 3341 break; 3342 3343 default: 3344 printk(KERN_INFO "Unknown WPA param: %d\n", name); 3345 ret = -EOPNOTSUPP; 3346 } 3347 3348 return ret; 3349} 3350 3351/* implementation borrowed from hostap driver */ 3352static int rtllib_wpa_set_encryption(struct rtllib_device *ieee, 3353 struct ieee_param *param, int param_len, 3354 u8 is_mesh) 3355{ 3356 int ret = 0; 3357 struct lib80211_crypto_ops *ops; 3358 struct lib80211_crypt_data **crypt; 3359 3360 struct rtllib_security sec = { 3361 .flags = 0, 3362 }; 3363 3364 param->u.crypt.err = 0; 3365 param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0'; 3366 3367 if (param_len != 3368 (int) ((char *) param->u.crypt.key - (char *) param) + 3369 param->u.crypt.key_len) { 3370 printk(KERN_INFO "Len mismatch %d, %d\n", param_len, 3371 param->u.crypt.key_len); 3372 return -EINVAL; 3373 } 3374 if (is_broadcast_ether_addr(param->sta_addr)) { 3375 if (param->u.crypt.idx >= NUM_WEP_KEYS) 3376 return -EINVAL; 3377 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx]; 3378 } else { 3379 return -EINVAL; 3380 } 3381 3382 if (strcmp(param->u.crypt.alg, "none") == 0) { 3383 if (crypt) { 3384 sec.enabled = 0; 3385 sec.level = SEC_LEVEL_0; 3386 sec.flags |= SEC_ENABLED | SEC_LEVEL; 3387 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); 3388 } 3389 goto done; 3390 } 3391 sec.enabled = 1; 3392 sec.flags |= SEC_ENABLED; 3393 3394 /* IPW HW cannot build TKIP MIC, host decryption still needed. */ 3395 if (!(ieee->host_encrypt || ieee->host_decrypt) && 3396 strcmp(param->u.crypt.alg, "R-TKIP")) 3397 goto skip_host_crypt; 3398 3399 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3400 if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) { 3401 request_module("rtllib_crypt_wep"); 3402 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3403 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) { 3404 request_module("rtllib_crypt_tkip"); 3405 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3406 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) { 3407 request_module("rtllib_crypt_ccmp"); 3408 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3409 } 3410 if (ops == NULL) { 3411 printk(KERN_INFO "unknown crypto alg '%s'\n", 3412 param->u.crypt.alg); 3413 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG; 3414 ret = -EINVAL; 3415 goto done; 3416 } 3417 if (*crypt == NULL || (*crypt)->ops != ops) { 3418 struct lib80211_crypt_data *new_crypt; 3419 3420 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); 3421 3422 new_crypt = kmalloc(sizeof(*new_crypt), GFP_KERNEL); 3423 if (new_crypt == NULL) { 3424 ret = -ENOMEM; 3425 goto done; 3426 } 3427 memset(new_crypt, 0, sizeof(struct lib80211_crypt_data)); 3428 new_crypt->ops = ops; 3429 if (new_crypt->ops) 3430 new_crypt->priv = 3431 new_crypt->ops->init(param->u.crypt.idx); 3432 3433 if (new_crypt->priv == NULL) { 3434 kfree(new_crypt); 3435 param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED; 3436 ret = -EINVAL; 3437 goto done; 3438 } 3439 3440 *crypt = new_crypt; 3441 } 3442 3443 if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key && 3444 (*crypt)->ops->set_key(param->u.crypt.key, 3445 param->u.crypt.key_len, param->u.crypt.seq, 3446 (*crypt)->priv) < 0) { 3447 printk(KERN_INFO "key setting failed\n"); 3448 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED; 3449 ret = -EINVAL; 3450 goto done; 3451 } 3452 3453 skip_host_crypt: 3454 if (param->u.crypt.set_tx) { 3455 ieee->crypt_info.tx_keyidx = param->u.crypt.idx; 3456 sec.active_key = param->u.crypt.idx; 3457 sec.flags |= SEC_ACTIVE_KEY; 3458 } else 3459 sec.flags &= ~SEC_ACTIVE_KEY; 3460 3461 if (param->u.crypt.alg != NULL) { 3462 memcpy(sec.keys[param->u.crypt.idx], 3463 param->u.crypt.key, 3464 param->u.crypt.key_len); 3465 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len; 3466 sec.flags |= (1 << param->u.crypt.idx); 3467 3468 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) { 3469 sec.flags |= SEC_LEVEL; 3470 sec.level = SEC_LEVEL_1; 3471 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) { 3472 sec.flags |= SEC_LEVEL; 3473 sec.level = SEC_LEVEL_2; 3474 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) { 3475 sec.flags |= SEC_LEVEL; 3476 sec.level = SEC_LEVEL_3; 3477 } 3478 } 3479 done: 3480 if (ieee->set_security) 3481 ieee->set_security(ieee->dev, &sec); 3482 3483 /* Do not reset port if card is in Managed mode since resetting will 3484 * generate new IEEE 802.11 authentication which may end up in looping 3485 * with IEEE 802.1X. If your hardware requires a reset after WEP 3486 * configuration (for example... Prism2), implement the reset_port in 3487 * the callbacks structures used to initialize the 802.11 stack. */ 3488 if (ieee->reset_on_keychange && 3489 ieee->iw_mode != IW_MODE_INFRA && 3490 ieee->reset_port && 3491 ieee->reset_port(ieee->dev)) { 3492 printk(KERN_INFO "reset_port failed\n"); 3493 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED; 3494 return -EINVAL; 3495 } 3496 3497 return ret; 3498} 3499 3500inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon, 3501 struct rtllib_device *ieee, u16 asRsn) 3502{ 3503 struct sk_buff *skb; 3504 struct rtllib_disauth *disauth; 3505 int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom; 3506 3507 skb = dev_alloc_skb(len); 3508 if (!skb) 3509 return NULL; 3510 3511 skb_reserve(skb, ieee->tx_headroom); 3512 3513 disauth = (struct rtllib_disauth *) skb_put(skb, 3514 sizeof(struct rtllib_disauth)); 3515 disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH); 3516 disauth->header.duration_id = 0; 3517 3518 memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN); 3519 memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 3520 memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN); 3521 3522 disauth->reason = cpu_to_le16(asRsn); 3523 return skb; 3524} 3525 3526inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon, 3527 struct rtllib_device *ieee, u16 asRsn) 3528{ 3529 struct sk_buff *skb; 3530 struct rtllib_disassoc *disass; 3531 int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom; 3532 3533 skb = dev_alloc_skb(len); 3534 3535 if (!skb) 3536 return NULL; 3537 3538 skb_reserve(skb, ieee->tx_headroom); 3539 3540 disass = (struct rtllib_disassoc *) skb_put(skb, 3541 sizeof(struct rtllib_disassoc)); 3542 disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC); 3543 disass->header.duration_id = 0; 3544 3545 memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN); 3546 memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 3547 memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN); 3548 3549 disass->reason = cpu_to_le16(asRsn); 3550 return skb; 3551} 3552 3553void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn) 3554{ 3555 struct rtllib_network *beacon = &ieee->current_network; 3556 struct sk_buff *skb; 3557 3558 if (deauth) 3559 skb = rtllib_disauth_skb(beacon, ieee, asRsn); 3560 else 3561 skb = rtllib_disassociate_skb(beacon, ieee, asRsn); 3562 3563 if (skb) 3564 softmac_mgmt_xmit(skb, ieee); 3565} 3566 3567u8 rtllib_ap_sec_type(struct rtllib_device *ieee) 3568{ 3569 static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04}; 3570 static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04}; 3571 int wpa_ie_len = ieee->wpa_ie_len; 3572 struct lib80211_crypt_data *crypt; 3573 int encrypt; 3574 3575 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 3576 encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY) 3577 || (ieee->host_encrypt && crypt && crypt->ops && 3578 (0 == strcmp(crypt->ops->name, "R-WEP"))); 3579 3580 /* simply judge */ 3581 if (encrypt && (wpa_ie_len == 0)) { 3582 return SEC_ALG_WEP; 3583 } else if ((wpa_ie_len != 0)) { 3584 if (((ieee->wpa_ie[0] == 0xdd) && 3585 (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) || 3586 ((ieee->wpa_ie[0] == 0x30) && 3587 (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4)))) 3588 return SEC_ALG_CCMP; 3589 else 3590 return SEC_ALG_TKIP; 3591 } else { 3592 return SEC_ALG_NONE; 3593 } 3594} 3595 3596int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p, 3597 u8 is_mesh) 3598{ 3599 struct ieee_param *param; 3600 int ret = 0; 3601 3602 down(&ieee->wx_sem); 3603 3604 if (p->length < sizeof(struct ieee_param) || !p->pointer) { 3605 ret = -EINVAL; 3606 goto out; 3607 } 3608 3609 param = memdup_user(p->pointer, p->length); 3610 if (IS_ERR(param)) { 3611 ret = PTR_ERR(param); 3612 goto out; 3613 } 3614 3615 switch (param->cmd) { 3616 case IEEE_CMD_SET_WPA_PARAM: 3617 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name, 3618 param->u.wpa_param.value); 3619 break; 3620 3621 case IEEE_CMD_SET_WPA_IE: 3622 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length); 3623 break; 3624 3625 case IEEE_CMD_SET_ENCRYPTION: 3626 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0); 3627 break; 3628 3629 case IEEE_CMD_MLME: 3630 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command, 3631 param->u.mlme.reason_code); 3632 break; 3633 3634 default: 3635 printk(KERN_INFO "Unknown WPA supplicant request: %d\n", 3636 param->cmd); 3637 ret = -EOPNOTSUPP; 3638 break; 3639 } 3640 3641 if (ret == 0 && copy_to_user(p->pointer, param, p->length)) 3642 ret = -EFAULT; 3643 3644 kfree(param); 3645out: 3646 up(&ieee->wx_sem); 3647 3648 return ret; 3649} 3650EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl); 3651 3652static void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib) 3653{ 3654 u8 OpMode; 3655 u8 i; 3656 bool bFilterOutNonAssociatedBSSID = false; 3657 3658 rtllib->state = RTLLIB_NOLINK; 3659 3660 for (i = 0; i < 6; i++) 3661 rtllib->current_network.bssid[i] = 0x55; 3662 3663 rtllib->OpMode = RT_OP_MODE_NO_LINK; 3664 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID, 3665 rtllib->current_network.bssid); 3666 OpMode = RT_OP_MODE_NO_LINK; 3667 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode); 3668 rtllib_stop_send_beacons(rtllib); 3669 3670 bFilterOutNonAssociatedBSSID = false; 3671 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID, 3672 (u8 *)(&bFilterOutNonAssociatedBSSID)); 3673 notify_wx_assoc_event(rtllib); 3674 3675} 3676 3677static void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta, 3678 u8 asRsn) 3679{ 3680 u8 i; 3681 u8 OpMode; 3682 3683 RemovePeerTS(rtllib, asSta); 3684 3685 if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) { 3686 rtllib->state = RTLLIB_NOLINK; 3687 3688 for (i = 0; i < 6; i++) 3689 rtllib->current_network.bssid[i] = 0x22; 3690 OpMode = RT_OP_MODE_NO_LINK; 3691 rtllib->OpMode = RT_OP_MODE_NO_LINK; 3692 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, 3693 (u8 *)(&OpMode)); 3694 rtllib_disassociate(rtllib); 3695 3696 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID, 3697 rtllib->current_network.bssid); 3698 3699 } 3700 3701} 3702 3703static void 3704rtllib_MgntDisconnectAP( 3705 struct rtllib_device *rtllib, 3706 u8 asRsn 3707) 3708{ 3709 bool bFilterOutNonAssociatedBSSID = false; 3710 3711 bFilterOutNonAssociatedBSSID = false; 3712 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID, 3713 (u8 *)(&bFilterOutNonAssociatedBSSID)); 3714 rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid, 3715 asRsn); 3716 3717 rtllib->state = RTLLIB_NOLINK; 3718} 3719 3720bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn) 3721{ 3722 if (rtllib->ps != RTLLIB_PS_DISABLED) 3723 rtllib->sta_wake_up(rtllib->dev); 3724 3725 if (rtllib->state == RTLLIB_LINKED) { 3726 if (rtllib->iw_mode == IW_MODE_ADHOC) 3727 rtllib_MgntDisconnectIBSS(rtllib); 3728 if (rtllib->iw_mode == IW_MODE_INFRA) 3729 rtllib_MgntDisconnectAP(rtllib, asRsn); 3730 3731 } 3732 3733 return true; 3734} 3735EXPORT_SYMBOL(rtllib_MgntDisconnect); 3736 3737void notify_wx_assoc_event(struct rtllib_device *ieee) 3738{ 3739 union iwreq_data wrqu; 3740 3741 if (ieee->cannot_notify) 3742 return; 3743 3744 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 3745 if (ieee->state == RTLLIB_LINKED) 3746 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid, 3747 ETH_ALEN); 3748 else { 3749 3750 printk(KERN_INFO "%s(): Tell user space disconnected\n", 3751 __func__); 3752 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); 3753 } 3754 wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL); 3755} 3756EXPORT_SYMBOL(notify_wx_assoc_event); 3757