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 */ 73 *tag_p = tag; 74} 75 76static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p) 77{ 78 u8 *tag = *tag_p; 79 80 if (ieee->modulation & RTLLIB_OFDM_MODULATION) { 81 *tag++ = MFIE_TYPE_RATES_EX; 82 *tag++ = 8; 83 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB; 84 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB; 85 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB; 86 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB; 87 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB; 88 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB; 89 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB; 90 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB; 91 } 92 /* We may add an option for custom rates that specific HW might 93 * support 94 */ 95 *tag_p = tag; 96} 97 98static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p) 99{ 100 u8 *tag = *tag_p; 101 102 *tag++ = MFIE_TYPE_GENERIC; 103 *tag++ = 7; 104 *tag++ = 0x00; 105 *tag++ = 0x50; 106 *tag++ = 0xf2; 107 *tag++ = 0x02; 108 *tag++ = 0x00; 109 *tag++ = 0x01; 110 *tag++ = MAX_SP_Len; 111 *tag_p = tag; 112} 113 114void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p) 115{ 116 u8 *tag = *tag_p; 117 118 *tag++ = MFIE_TYPE_GENERIC; 119 *tag++ = 7; 120 *tag++ = 0x00; 121 *tag++ = 0xe0; 122 *tag++ = 0x4c; 123 *tag++ = 0x01; 124 *tag++ = 0x02; 125 *tag++ = 0x11; 126 *tag++ = 0x00; 127 128 *tag_p = tag; 129 netdev_alert(ieee->dev, "This is enable turbo mode IE process\n"); 130} 131 132static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb) 133{ 134 int nh; 135 136 nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM; 137 138/* if the queue is full but we have newer frames then 139 * just overwrites the oldest. 140 * 141 * if (nh == ieee->mgmt_queue_tail) 142 * return -1; 143 */ 144 ieee->mgmt_queue_head = nh; 145 ieee->mgmt_queue_ring[nh] = skb; 146 147} 148 149static struct sk_buff *dequeue_mgmt(struct rtllib_device *ieee) 150{ 151 struct sk_buff *ret; 152 153 if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head) 154 return NULL; 155 156 ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail]; 157 158 ieee->mgmt_queue_tail = 159 (ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM; 160 161 return ret; 162} 163 164static void init_mgmt_queue(struct rtllib_device *ieee) 165{ 166 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0; 167} 168 169 170u8 171MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee) 172{ 173 u16 i; 174 u8 QueryRate = 0; 175 u8 BasicRate; 176 177 178 for (i = 0; i < ieee->current_network.rates_len; i++) { 179 BasicRate = ieee->current_network.rates[i]&0x7F; 180 if (!rtllib_is_cck_rate(BasicRate)) { 181 if (QueryRate == 0) { 182 QueryRate = BasicRate; 183 } else { 184 if (BasicRate < QueryRate) 185 QueryRate = BasicRate; 186 } 187 } 188 } 189 190 if (QueryRate == 0) { 191 QueryRate = 12; 192 netdev_info(ieee->dev, "No BasicRate found!!\n"); 193 } 194 return QueryRate; 195} 196 197static u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee) 198{ 199 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; 200 u8 rate; 201 202 if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M) 203 rate = 0x0c; 204 else 205 rate = ieee->basic_rate & 0x7f; 206 207 if (rate == 0) { 208 if (ieee->mode == IEEE_A || 209 ieee->mode == IEEE_N_5G || 210 (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK)) 211 rate = 0x0c; 212 else 213 rate = 0x02; 214 } 215 216 return rate; 217} 218 219inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee) 220{ 221 unsigned long flags; 222 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE; 223 struct rtllib_hdr_3addr *header = 224 (struct rtllib_hdr_3addr *) skb->data; 225 226 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8); 227 228 spin_lock_irqsave(&ieee->lock, flags); 229 230 /* called with 2nd param 0, no mgmt lock required */ 231 rtllib_sta_wakeup(ieee, 0); 232 233 if (le16_to_cpu(header->frame_ctl) == RTLLIB_STYPE_BEACON) 234 tcb_desc->queue_index = BEACON_QUEUE; 235 else 236 tcb_desc->queue_index = MGNT_QUEUE; 237 238 if (ieee->disable_mgnt_queue) 239 tcb_desc->queue_index = HIGH_QUEUE; 240 241 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee); 242 tcb_desc->RATRIndex = 7; 243 tcb_desc->bTxDisableRateFallBack = 1; 244 tcb_desc->bTxUseDriverAssingedRate = 1; 245 if (single) { 246 if (ieee->queue_stop) { 247 enqueue_mgmt(ieee, skb); 248 } else { 249 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4); 250 251 if (ieee->seq_ctrl[0] == 0xFFF) 252 ieee->seq_ctrl[0] = 0; 253 else 254 ieee->seq_ctrl[0]++; 255 256 /* avoid watchdog triggers */ 257 ieee->softmac_data_hard_start_xmit(skb, ieee->dev, 258 ieee->basic_rate); 259 } 260 261 spin_unlock_irqrestore(&ieee->lock, flags); 262 } else { 263 spin_unlock_irqrestore(&ieee->lock, flags); 264 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags); 265 266 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 267 268 if (ieee->seq_ctrl[0] == 0xFFF) 269 ieee->seq_ctrl[0] = 0; 270 else 271 ieee->seq_ctrl[0]++; 272 273 /* check whether the managed packet queued greater than 5 */ 274 if (!ieee->check_nic_enough_desc(ieee->dev, tcb_desc->queue_index) || 275 (skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) != 0) || 276 (ieee->queue_stop)) { 277 /* insert the skb packet to the management queue 278 * 279 * as for the completion function, it does not need 280 * to check it any more. 281 */ 282 netdev_info(ieee->dev, 283 "%s():insert to waitqueue, queue_index:%d!\n", 284 __func__, tcb_desc->queue_index); 285 skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index], 286 skb); 287 } else { 288 ieee->softmac_hard_start_xmit(skb, ieee->dev); 289 } 290 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags); 291 } 292} 293 294inline void softmac_ps_mgmt_xmit(struct sk_buff *skb, 295 struct rtllib_device *ieee) 296{ 297 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE; 298 struct rtllib_hdr_3addr *header = 299 (struct rtllib_hdr_3addr *) skb->data; 300 u16 fc, type, stype; 301 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8); 302 303 fc = le16_to_cpu(header->frame_ctl); 304 type = WLAN_FC_GET_TYPE(fc); 305 stype = WLAN_FC_GET_STYPE(fc); 306 307 308 if (stype != RTLLIB_STYPE_PSPOLL) 309 tcb_desc->queue_index = MGNT_QUEUE; 310 else 311 tcb_desc->queue_index = HIGH_QUEUE; 312 313 if (ieee->disable_mgnt_queue) 314 tcb_desc->queue_index = HIGH_QUEUE; 315 316 317 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee); 318 tcb_desc->RATRIndex = 7; 319 tcb_desc->bTxDisableRateFallBack = 1; 320 tcb_desc->bTxUseDriverAssingedRate = 1; 321 if (single) { 322 if (type != RTLLIB_FTYPE_CTL) { 323 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 324 325 if (ieee->seq_ctrl[0] == 0xFFF) 326 ieee->seq_ctrl[0] = 0; 327 else 328 ieee->seq_ctrl[0]++; 329 330 } 331 /* avoid watchdog triggers */ 332 ieee->softmac_data_hard_start_xmit(skb, ieee->dev, 333 ieee->basic_rate); 334 335 } else { 336 if (type != RTLLIB_FTYPE_CTL) { 337 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 338 339 if (ieee->seq_ctrl[0] == 0xFFF) 340 ieee->seq_ctrl[0] = 0; 341 else 342 ieee->seq_ctrl[0]++; 343 } 344 ieee->softmac_hard_start_xmit(skb, ieee->dev); 345 346 } 347} 348 349static inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee) 350{ 351 unsigned int len, rate_len; 352 u8 *tag; 353 struct sk_buff *skb; 354 struct rtllib_probe_request *req; 355 356 len = ieee->current_network.ssid_len; 357 358 rate_len = rtllib_MFIE_rate_len(ieee); 359 360 skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) + 361 2 + len + rate_len + ieee->tx_headroom); 362 363 if (!skb) 364 return NULL; 365 366 skb_reserve(skb, ieee->tx_headroom); 367 368 req = (struct rtllib_probe_request *) skb_put(skb, 369 sizeof(struct rtllib_probe_request)); 370 req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ); 371 req->header.duration_id = 0; 372 373 memset(req->header.addr1, 0xff, ETH_ALEN); 374 memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 375 memset(req->header.addr3, 0xff, ETH_ALEN); 376 377 tag = (u8 *) skb_put(skb, len + 2 + rate_len); 378 379 *tag++ = MFIE_TYPE_SSID; 380 *tag++ = len; 381 memcpy(tag, ieee->current_network.ssid, len); 382 tag += len; 383 384 rtllib_MFIE_Brate(ieee, &tag); 385 rtllib_MFIE_Grate(ieee, &tag); 386 387 return skb; 388} 389 390struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee); 391 392static void rtllib_send_beacon(struct rtllib_device *ieee) 393{ 394 struct sk_buff *skb; 395 396 if (!ieee->ieee_up) 397 return; 398 skb = rtllib_get_beacon_(ieee); 399 400 if (skb) { 401 softmac_mgmt_xmit(skb, ieee); 402 ieee->softmac_stats.tx_beacons++; 403 } 404 405 if (ieee->beacon_txing && ieee->ieee_up) 406 mod_timer(&ieee->beacon_timer, jiffies + 407 (msecs_to_jiffies(ieee->current_network.beacon_interval - 5))); 408} 409 410 411static void rtllib_send_beacon_cb(unsigned long _ieee) 412{ 413 struct rtllib_device *ieee = 414 (struct rtllib_device *) _ieee; 415 unsigned long flags; 416 417 spin_lock_irqsave(&ieee->beacon_lock, flags); 418 rtllib_send_beacon(ieee); 419 spin_unlock_irqrestore(&ieee->beacon_lock, flags); 420} 421 422/* Enables network monitor mode, all rx packets will be received. */ 423void rtllib_EnableNetMonitorMode(struct net_device *dev, 424 bool bInitState) 425{ 426 struct rtllib_device *ieee = netdev_priv_rsl(dev); 427 428 netdev_info(dev, "========>Enter Monitor Mode\n"); 429 430 ieee->AllowAllDestAddrHandler(dev, true, !bInitState); 431} 432 433 434/* Disables network monitor mode. Only packets destinated to 435 * us will be received. 436 */ 437void rtllib_DisableNetMonitorMode(struct net_device *dev, 438 bool bInitState) 439{ 440 struct rtllib_device *ieee = netdev_priv_rsl(dev); 441 442 netdev_info(dev, "========>Exit Monitor Mode\n"); 443 444 ieee->AllowAllDestAddrHandler(dev, false, !bInitState); 445} 446 447 448/* Enables the specialized promiscuous mode required by Intel. 449 * In this mode, Intel intends to hear traffics from/to other STAs in the 450 * same BSS. Therefore we don't have to disable checking BSSID and we only need 451 * to allow all dest. BUT: if we enable checking BSSID then we can't recv 452 * packets from other STA. 453 */ 454void rtllib_EnableIntelPromiscuousMode(struct net_device *dev, 455 bool bInitState) 456{ 457 bool bFilterOutNonAssociatedBSSID = false; 458 459 struct rtllib_device *ieee = netdev_priv_rsl(dev); 460 461 netdev_info(dev, "========>Enter Intel Promiscuous Mode\n"); 462 463 ieee->AllowAllDestAddrHandler(dev, true, !bInitState); 464 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID, 465 (u8 *)&bFilterOutNonAssociatedBSSID); 466 467 ieee->bNetPromiscuousMode = true; 468} 469EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode); 470 471 472/* Disables the specialized promiscuous mode required by Intel. 473 * See MgntEnableIntelPromiscuousMode for detail. 474 */ 475void rtllib_DisableIntelPromiscuousMode(struct net_device *dev, 476 bool bInitState) 477{ 478 bool bFilterOutNonAssociatedBSSID = true; 479 480 struct rtllib_device *ieee = netdev_priv_rsl(dev); 481 482 netdev_info(dev, "========>Exit Intel Promiscuous Mode\n"); 483 484 ieee->AllowAllDestAddrHandler(dev, false, !bInitState); 485 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID, 486 (u8 *)&bFilterOutNonAssociatedBSSID); 487 488 ieee->bNetPromiscuousMode = false; 489} 490EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode); 491 492static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh) 493{ 494 struct sk_buff *skb; 495 496 skb = rtllib_probe_req(ieee); 497 if (skb) { 498 softmac_mgmt_xmit(skb, ieee); 499 ieee->softmac_stats.tx_probe_rq++; 500 } 501} 502 503 504void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh) 505{ 506 if (ieee->active_scan && (ieee->softmac_features & 507 IEEE_SOFTMAC_PROBERQ)) { 508 rtllib_send_probe(ieee, 0); 509 rtllib_send_probe(ieee, 0); 510 } 511} 512 513static void rtllib_softmac_hint11d_wq(void *data) 514{ 515} 516 517void rtllib_update_active_chan_map(struct rtllib_device *ieee) 518{ 519 memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map, 520 MAX_CHANNEL_NUMBER+1); 521} 522 523/* this performs syncro scan blocking the caller until all channels 524 * in the allowed channel map has been checked. 525 */ 526void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh) 527{ 528 union iwreq_data wrqu; 529 short ch = 0; 530 531 rtllib_update_active_chan_map(ieee); 532 533 ieee->be_scan_inprogress = true; 534 535 down(&ieee->scan_sem); 536 537 while (1) { 538 do { 539 ch++; 540 if (ch > MAX_CHANNEL_NUMBER) 541 goto out; /* scan completed */ 542 } while (!ieee->active_channel_map[ch]); 543 544 /* this function can be called in two situations 545 * 1- We have switched to ad-hoc mode and we are 546 * performing a complete syncro scan before conclude 547 * there are no interesting cell and to create a 548 * new one. In this case the link state is 549 * RTLLIB_NOLINK until we found an interesting cell. 550 * If so the ieee8021_new_net, called by the RX path 551 * will set the state to RTLLIB_LINKED, so we stop 552 * scanning 553 * 2- We are linked and the root uses run iwlist scan. 554 * So we switch to RTLLIB_LINKED_SCANNING to remember 555 * that we are still logically linked (not interested in 556 * new network events, despite for updating the net list, 557 * but we are temporarly 'unlinked' as the driver shall 558 * not filter RX frames and the channel is changing. 559 * So the only situation in which are interested is to check 560 * if the state become LINKED because of the #1 situation 561 */ 562 563 if (ieee->state == RTLLIB_LINKED) 564 goto out; 565 if (ieee->sync_scan_hurryup) { 566 netdev_info(ieee->dev, 567 "============>sync_scan_hurryup out\n"); 568 goto out; 569 } 570 571 ieee->set_chan(ieee->dev, ch); 572 if (ieee->active_channel_map[ch] == 1) 573 rtllib_send_probe_requests(ieee, 0); 574 575 /* this prevent excessive time wait when we 576 * need to wait for a syncro scan to end.. 577 */ 578 msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME); 579 } 580out: 581 ieee->actscanning = false; 582 ieee->sync_scan_hurryup = 0; 583 584 if (ieee->state >= RTLLIB_LINKED) { 585 if (IS_DOT11D_ENABLE(ieee)) 586 DOT11D_ScanComplete(ieee); 587 } 588 up(&ieee->scan_sem); 589 590 ieee->be_scan_inprogress = false; 591 592 memset(&wrqu, 0, sizeof(wrqu)); 593 wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL); 594} 595 596static void rtllib_softmac_scan_wq(void *data) 597{ 598 struct rtllib_device *ieee = container_of_dwork_rsl(data, 599 struct rtllib_device, softmac_scan_wq); 600 u8 last_channel = ieee->current_network.channel; 601 602 rtllib_update_active_chan_map(ieee); 603 604 if (!ieee->ieee_up) 605 return; 606 if (rtllib_act_scanning(ieee, true)) 607 return; 608 609 down(&ieee->scan_sem); 610 611 if (ieee->eRFPowerState == eRfOff) { 612 netdev_info(ieee->dev, 613 "======>%s():rf state is eRfOff, return\n", 614 __func__); 615 goto out1; 616 } 617 618 do { 619 ieee->current_network.channel = 620 (ieee->current_network.channel + 1) % 621 MAX_CHANNEL_NUMBER; 622 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) { 623 if (!ieee->active_channel_map[ieee->current_network.channel]) 624 ieee->current_network.channel = 6; 625 goto out; /* no good chans */ 626 } 627 } while (!ieee->active_channel_map[ieee->current_network.channel]); 628 629 if (ieee->scanning_continue == 0) 630 goto out; 631 632 ieee->set_chan(ieee->dev, ieee->current_network.channel); 633 634 if (ieee->active_channel_map[ieee->current_network.channel] == 1) 635 rtllib_send_probe_requests(ieee, 0); 636 637 queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq, 638 msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME)); 639 640 up(&ieee->scan_sem); 641 return; 642 643out: 644 if (IS_DOT11D_ENABLE(ieee)) 645 DOT11D_ScanComplete(ieee); 646 ieee->current_network.channel = last_channel; 647 648out1: 649 ieee->actscanning = false; 650 ieee->scan_watch_dog = 0; 651 ieee->scanning_continue = 0; 652 up(&ieee->scan_sem); 653} 654 655 656 657static void rtllib_beacons_start(struct rtllib_device *ieee) 658{ 659 unsigned long flags; 660 661 spin_lock_irqsave(&ieee->beacon_lock, flags); 662 663 ieee->beacon_txing = 1; 664 rtllib_send_beacon(ieee); 665 666 spin_unlock_irqrestore(&ieee->beacon_lock, flags); 667} 668 669static void rtllib_beacons_stop(struct rtllib_device *ieee) 670{ 671 unsigned long flags; 672 673 spin_lock_irqsave(&ieee->beacon_lock, flags); 674 675 ieee->beacon_txing = 0; 676 del_timer_sync(&ieee->beacon_timer); 677 678 spin_unlock_irqrestore(&ieee->beacon_lock, flags); 679 680} 681 682 683void rtllib_stop_send_beacons(struct rtllib_device *ieee) 684{ 685 if (ieee->stop_send_beacons) 686 ieee->stop_send_beacons(ieee->dev); 687 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS) 688 rtllib_beacons_stop(ieee); 689} 690EXPORT_SYMBOL(rtllib_stop_send_beacons); 691 692 693void rtllib_start_send_beacons(struct rtllib_device *ieee) 694{ 695 if (ieee->start_send_beacons) 696 ieee->start_send_beacons(ieee->dev); 697 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS) 698 rtllib_beacons_start(ieee); 699} 700EXPORT_SYMBOL(rtllib_start_send_beacons); 701 702 703static void rtllib_softmac_stop_scan(struct rtllib_device *ieee) 704{ 705 down(&ieee->scan_sem); 706 ieee->scan_watch_dog = 0; 707 if (ieee->scanning_continue == 1) { 708 ieee->scanning_continue = 0; 709 ieee->actscanning = false; 710 711 cancel_delayed_work(&ieee->softmac_scan_wq); 712 } 713 714 up(&ieee->scan_sem); 715} 716 717void rtllib_stop_scan(struct rtllib_device *ieee) 718{ 719 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 720 rtllib_softmac_stop_scan(ieee); 721 } else { 722 if (ieee->rtllib_stop_hw_scan) 723 ieee->rtllib_stop_hw_scan(ieee->dev); 724 } 725} 726EXPORT_SYMBOL(rtllib_stop_scan); 727 728void rtllib_stop_scan_syncro(struct rtllib_device *ieee) 729{ 730 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 731 ieee->sync_scan_hurryup = 1; 732 } else { 733 if (ieee->rtllib_stop_hw_scan) 734 ieee->rtllib_stop_hw_scan(ieee->dev); 735 } 736} 737EXPORT_SYMBOL(rtllib_stop_scan_syncro); 738 739bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan) 740{ 741 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 742 if (sync_scan) 743 return ieee->be_scan_inprogress; 744 else 745 return ieee->actscanning || ieee->be_scan_inprogress; 746 } else { 747 return test_bit(STATUS_SCANNING, &ieee->status); 748 } 749} 750EXPORT_SYMBOL(rtllib_act_scanning); 751 752/* called with ieee->lock held */ 753static void rtllib_start_scan(struct rtllib_device *ieee) 754{ 755 RT_TRACE(COMP_DBG, "===>%s()\n", __func__); 756 if (ieee->rtllib_ips_leave_wq != NULL) 757 ieee->rtllib_ips_leave_wq(ieee->dev); 758 759 if (IS_DOT11D_ENABLE(ieee)) { 760 if (IS_COUNTRY_IE_VALID(ieee)) 761 RESET_CIE_WATCHDOG(ieee); 762 } 763 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 764 if (ieee->scanning_continue == 0) { 765 ieee->actscanning = true; 766 ieee->scanning_continue = 1; 767 queue_delayed_work_rsl(ieee->wq, 768 &ieee->softmac_scan_wq, 0); 769 } 770 } else { 771 if (ieee->rtllib_start_hw_scan) 772 ieee->rtllib_start_hw_scan(ieee->dev); 773 } 774} 775 776/* called with wx_sem held */ 777void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh) 778{ 779 if (IS_DOT11D_ENABLE(ieee)) { 780 if (IS_COUNTRY_IE_VALID(ieee)) 781 RESET_CIE_WATCHDOG(ieee); 782 } 783 ieee->sync_scan_hurryup = 0; 784 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 785 rtllib_softmac_scan_syncro(ieee, is_mesh); 786 } else { 787 if (ieee->rtllib_start_hw_scan) 788 ieee->rtllib_start_hw_scan(ieee->dev); 789 } 790} 791EXPORT_SYMBOL(rtllib_start_scan_syncro); 792 793inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon, 794 struct rtllib_device *ieee, int challengelen, u8 *daddr) 795{ 796 struct sk_buff *skb; 797 struct rtllib_authentication *auth; 798 int len = 0; 799 800 len = sizeof(struct rtllib_authentication) + challengelen + 801 ieee->tx_headroom + 4; 802 skb = dev_alloc_skb(len); 803 804 if (!skb) 805 return NULL; 806 807 skb_reserve(skb, ieee->tx_headroom); 808 809 auth = (struct rtllib_authentication *) 810 skb_put(skb, sizeof(struct rtllib_authentication)); 811 812 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH); 813 if (challengelen) 814 auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP); 815 816 auth->header.duration_id = cpu_to_le16(0x013a); 817 memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN); 818 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 819 memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN); 820 if (ieee->auth_mode == 0) 821 auth->algorithm = WLAN_AUTH_OPEN; 822 else if (ieee->auth_mode == 1) 823 auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY); 824 else if (ieee->auth_mode == 2) 825 auth->algorithm = WLAN_AUTH_OPEN; 826 auth->transaction = cpu_to_le16(ieee->associate_seq); 827 ieee->associate_seq++; 828 829 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS); 830 831 return skb; 832} 833 834static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, u8 *dest) 835{ 836 u8 *tag; 837 int beacon_size; 838 struct rtllib_probe_response *beacon_buf; 839 struct sk_buff *skb = NULL; 840 int encrypt; 841 int atim_len, erp_len; 842 struct lib80211_crypt_data *crypt; 843 844 char *ssid = ieee->current_network.ssid; 845 int ssid_len = ieee->current_network.ssid_len; 846 int rate_len = ieee->current_network.rates_len+2; 847 int rate_ex_len = ieee->current_network.rates_ex_len; 848 int wpa_ie_len = ieee->wpa_ie_len; 849 u8 erpinfo_content = 0; 850 851 u8 *tmp_ht_cap_buf = NULL; 852 u8 tmp_ht_cap_len = 0; 853 u8 *tmp_ht_info_buf = NULL; 854 u8 tmp_ht_info_len = 0; 855 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; 856 u8 *tmp_generic_ie_buf = NULL; 857 u8 tmp_generic_ie_len = 0; 858 859 if (rate_ex_len > 0) 860 rate_ex_len += 2; 861 862 if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS) 863 atim_len = 4; 864 else 865 atim_len = 0; 866 867 if ((ieee->current_network.mode == IEEE_G) || 868 (ieee->current_network.mode == IEEE_N_24G && 869 ieee->pHTInfo->bCurSuppCCK)) { 870 erp_len = 3; 871 erpinfo_content = 0; 872 if (ieee->current_network.buseprotection) 873 erpinfo_content |= ERP_UseProtection; 874 } else 875 erp_len = 0; 876 877 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 878 encrypt = ieee->host_encrypt && crypt && crypt->ops && 879 ((0 == strcmp(crypt->ops->name, "R-WEP") || wpa_ie_len)); 880 if (ieee->pHTInfo->bCurrentHTSupport) { 881 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap); 882 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); 883 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo); 884 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo); 885 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf, 886 &tmp_ht_cap_len, encrypt, false); 887 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len, 888 encrypt); 889 890 if (pHTInfo->bRegRT2RTAggregation) { 891 tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; 892 tmp_generic_ie_len = 893 sizeof(ieee->pHTInfo->szRT2RTAggBuffer); 894 HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf, 895 &tmp_generic_ie_len); 896 } 897 } 898 899 beacon_size = sizeof(struct rtllib_probe_response)+2+ 900 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len 901 + wpa_ie_len + ieee->tx_headroom; 902 skb = dev_alloc_skb(beacon_size); 903 if (!skb) 904 return NULL; 905 906 skb_reserve(skb, ieee->tx_headroom); 907 908 beacon_buf = (struct rtllib_probe_response *) skb_put(skb, 909 (beacon_size - ieee->tx_headroom)); 910 memcpy(beacon_buf->header.addr1, dest, ETH_ALEN); 911 memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 912 memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN); 913 914 beacon_buf->header.duration_id = 0; 915 beacon_buf->beacon_interval = 916 cpu_to_le16(ieee->current_network.beacon_interval); 917 beacon_buf->capability = 918 cpu_to_le16(ieee->current_network.capability & 919 WLAN_CAPABILITY_IBSS); 920 beacon_buf->capability |= 921 cpu_to_le16(ieee->current_network.capability & 922 WLAN_CAPABILITY_SHORT_PREAMBLE); 923 924 if (ieee->short_slot && (ieee->current_network.capability & 925 WLAN_CAPABILITY_SHORT_SLOT_TIME)) 926 beacon_buf->capability |= 927 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); 928 929 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 930 if (encrypt) 931 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 932 933 934 beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP); 935 beacon_buf->info_element[0].id = MFIE_TYPE_SSID; 936 beacon_buf->info_element[0].len = ssid_len; 937 938 tag = (u8 *) beacon_buf->info_element[0].data; 939 940 memcpy(tag, ssid, ssid_len); 941 942 tag += ssid_len; 943 944 *(tag++) = MFIE_TYPE_RATES; 945 *(tag++) = rate_len-2; 946 memcpy(tag, ieee->current_network.rates, rate_len-2); 947 tag += rate_len-2; 948 949 *(tag++) = MFIE_TYPE_DS_SET; 950 *(tag++) = 1; 951 *(tag++) = ieee->current_network.channel; 952 953 if (atim_len) { 954 u16 val16; 955 *(tag++) = MFIE_TYPE_IBSS_SET; 956 *(tag++) = 2; 957 val16 = ieee->current_network.atim_window; 958 memcpy((u8 *)tag, (u8 *)&val16, 2); 959 tag += 2; 960 } 961 962 if (erp_len) { 963 *(tag++) = MFIE_TYPE_ERP; 964 *(tag++) = 1; 965 *(tag++) = erpinfo_content; 966 } 967 if (rate_ex_len) { 968 *(tag++) = MFIE_TYPE_RATES_EX; 969 *(tag++) = rate_ex_len-2; 970 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2); 971 tag += rate_ex_len-2; 972 } 973 974 if (wpa_ie_len) { 975 if (ieee->iw_mode == IW_MODE_ADHOC) 976 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4); 977 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len); 978 tag += ieee->wpa_ie_len; 979 } 980 return skb; 981} 982 983static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest) 984{ 985 struct sk_buff *skb; 986 u8 *tag; 987 988 struct lib80211_crypt_data *crypt; 989 struct rtllib_assoc_response_frame *assoc; 990 short encrypt; 991 992 unsigned int rate_len = rtllib_MFIE_rate_len(ieee); 993 int len = sizeof(struct rtllib_assoc_response_frame) + rate_len + 994 ieee->tx_headroom; 995 996 skb = dev_alloc_skb(len); 997 998 if (!skb) 999 return NULL; 1000 1001 skb_reserve(skb, ieee->tx_headroom); 1002 1003 assoc = (struct rtllib_assoc_response_frame *) 1004 skb_put(skb, sizeof(struct rtllib_assoc_response_frame)); 1005 1006 assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP); 1007 memcpy(assoc->header.addr1, dest, ETH_ALEN); 1008 memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN); 1009 memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 1010 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ? 1011 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS); 1012 1013 1014 if (ieee->short_slot) 1015 assoc->capability |= 1016 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); 1017 1018 if (ieee->host_encrypt) 1019 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 1020 else 1021 crypt = NULL; 1022 1023 encrypt = (crypt && crypt->ops); 1024 1025 if (encrypt) 1026 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 1027 1028 assoc->status = 0; 1029 assoc->aid = cpu_to_le16(ieee->assoc_id); 1030 if (ieee->assoc_id == 0x2007) 1031 ieee->assoc_id = 0; 1032 else 1033 ieee->assoc_id++; 1034 1035 tag = (u8 *) skb_put(skb, rate_len); 1036 rtllib_MFIE_Brate(ieee, &tag); 1037 rtllib_MFIE_Grate(ieee, &tag); 1038 1039 return skb; 1040} 1041 1042static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status, 1043 u8 *dest) 1044{ 1045 struct sk_buff *skb = NULL; 1046 struct rtllib_authentication *auth; 1047 int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1; 1048 1049 skb = dev_alloc_skb(len); 1050 if (!skb) 1051 return NULL; 1052 1053 skb->len = sizeof(struct rtllib_authentication); 1054 1055 skb_reserve(skb, ieee->tx_headroom); 1056 1057 auth = (struct rtllib_authentication *) 1058 skb_put(skb, sizeof(struct rtllib_authentication)); 1059 1060 auth->status = cpu_to_le16(status); 1061 auth->transaction = cpu_to_le16(2); 1062 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN); 1063 1064 memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN); 1065 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 1066 memcpy(auth->header.addr1, dest, ETH_ALEN); 1067 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH); 1068 return skb; 1069 1070 1071} 1072 1073static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr) 1074{ 1075 struct sk_buff *skb; 1076 struct rtllib_hdr_3addr *hdr; 1077 1078 skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom); 1079 if (!skb) 1080 return NULL; 1081 1082 skb_reserve(skb, ieee->tx_headroom); 1083 1084 hdr = (struct rtllib_hdr_3addr *)skb_put(skb, 1085 sizeof(struct rtllib_hdr_3addr)); 1086 1087 memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN); 1088 memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN); 1089 memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN); 1090 1091 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA | 1092 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS | 1093 (pwr ? RTLLIB_FCTL_PM : 0)); 1094 1095 return skb; 1096 1097 1098} 1099 1100static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee) 1101{ 1102 struct sk_buff *skb; 1103 struct rtllib_pspoll_hdr *hdr; 1104 1105 skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom); 1106 if (!skb) 1107 return NULL; 1108 1109 skb_reserve(skb, ieee->tx_headroom); 1110 1111 hdr = (struct rtllib_pspoll_hdr *)skb_put(skb, 1112 sizeof(struct rtllib_pspoll_hdr)); 1113 1114 memcpy(hdr->bssid, ieee->current_network.bssid, ETH_ALEN); 1115 memcpy(hdr->ta, ieee->dev->dev_addr, ETH_ALEN); 1116 1117 hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000); 1118 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL | 1119 RTLLIB_FCTL_PM); 1120 1121 return skb; 1122 1123} 1124 1125static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest) 1126{ 1127 struct sk_buff *buf = rtllib_assoc_resp(ieee, dest); 1128 1129 if (buf) 1130 softmac_mgmt_xmit(buf, ieee); 1131} 1132 1133 1134static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest) 1135{ 1136 struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest); 1137 1138 if (buf) 1139 softmac_mgmt_xmit(buf, ieee); 1140} 1141 1142 1143static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest) 1144{ 1145 struct sk_buff *buf = rtllib_probe_resp(ieee, dest); 1146 1147 if (buf) 1148 softmac_mgmt_xmit(buf, ieee); 1149} 1150 1151 1152inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid) 1153{ 1154 int i = 0; 1155 1156 do { 1157 if ((ieee->PMKIDList[i].bUsed) && 1158 (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0)) 1159 break; 1160 i++; 1161 } while (i < NUM_PMKID_CACHE); 1162 1163 if (i == NUM_PMKID_CACHE) 1164 i = -1; 1165 return i; 1166} 1167 1168inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon, 1169 struct rtllib_device *ieee) 1170{ 1171 struct sk_buff *skb; 1172 struct rtllib_assoc_request_frame *hdr; 1173 u8 *tag, *ies; 1174 int i; 1175 u8 *ht_cap_buf = NULL; 1176 u8 ht_cap_len = 0; 1177 u8 *realtek_ie_buf = NULL; 1178 u8 realtek_ie_len = 0; 1179 int wpa_ie_len = ieee->wpa_ie_len; 1180 int wps_ie_len = ieee->wps_ie_len; 1181 unsigned int ckip_ie_len = 0; 1182 unsigned int ccxrm_ie_len = 0; 1183 unsigned int cxvernum_ie_len = 0; 1184 struct lib80211_crypt_data *crypt; 1185 int encrypt; 1186 int PMKCacheIdx; 1187 1188 unsigned int rate_len = (beacon->rates_len ? 1189 (beacon->rates_len + 2) : 0) + 1190 (beacon->rates_ex_len ? (beacon->rates_ex_len) + 1191 2 : 0); 1192 1193 unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0; 1194 unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0; 1195 1196 int len = 0; 1197 1198 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 1199 if (crypt != NULL) 1200 encrypt = ieee->host_encrypt && crypt && crypt->ops && 1201 ((0 == strcmp(crypt->ops->name, "R-WEP") || 1202 wpa_ie_len)); 1203 else 1204 encrypt = 0; 1205 1206 if ((ieee->rtllib_ap_sec_type && 1207 (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) || 1208 ieee->bForcedBgMode) { 1209 ieee->pHTInfo->bEnableHT = 0; 1210 ieee->mode = WIRELESS_MODE_G; 1211 } 1212 1213 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1214 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap); 1215 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); 1216 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len, 1217 encrypt, true); 1218 if (ieee->pHTInfo->bCurrentRT2RTAggregation) { 1219 realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; 1220 realtek_ie_len = 1221 sizeof(ieee->pHTInfo->szRT2RTAggBuffer); 1222 HTConstructRT2RTAggElement(ieee, realtek_ie_buf, 1223 &realtek_ie_len); 1224 } 1225 } 1226 1227 if (beacon->bCkipSupported) 1228 ckip_ie_len = 30+2; 1229 if (beacon->bCcxRmEnable) 1230 ccxrm_ie_len = 6+2; 1231 if (beacon->BssCcxVerNumber >= 2) 1232 cxvernum_ie_len = 5+2; 1233 1234 PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid); 1235 if (PMKCacheIdx >= 0) { 1236 wpa_ie_len += 18; 1237 netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n", 1238 wpa_ie_len); 1239 } 1240 len = sizeof(struct rtllib_assoc_request_frame) + 2 1241 + beacon->ssid_len 1242 + rate_len 1243 + wpa_ie_len 1244 + wps_ie_len 1245 + wmm_info_len 1246 + turbo_info_len 1247 + ht_cap_len 1248 + realtek_ie_len 1249 + ckip_ie_len 1250 + ccxrm_ie_len 1251 + cxvernum_ie_len 1252 + ieee->tx_headroom; 1253 1254 skb = dev_alloc_skb(len); 1255 1256 if (!skb) 1257 return NULL; 1258 1259 skb_reserve(skb, ieee->tx_headroom); 1260 1261 hdr = (struct rtllib_assoc_request_frame *) 1262 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2); 1263 1264 1265 hdr->header.frame_ctl = RTLLIB_STYPE_ASSOC_REQ; 1266 hdr->header.duration_id = cpu_to_le16(37); 1267 memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN); 1268 memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 1269 memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN); 1270 1271 memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN); 1272 1273 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS); 1274 if (beacon->capability & WLAN_CAPABILITY_PRIVACY) 1275 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 1276 1277 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) 1278 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE); 1279 1280 if (ieee->short_slot && 1281 (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME)) 1282 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); 1283 1284 1285 hdr->listen_interval = cpu_to_le16(beacon->listen_interval); 1286 1287 hdr->info_element[0].id = MFIE_TYPE_SSID; 1288 1289 hdr->info_element[0].len = beacon->ssid_len; 1290 tag = skb_put(skb, beacon->ssid_len); 1291 memcpy(tag, beacon->ssid, beacon->ssid_len); 1292 1293 tag = skb_put(skb, rate_len); 1294 1295 if (beacon->rates_len) { 1296 *tag++ = MFIE_TYPE_RATES; 1297 *tag++ = beacon->rates_len; 1298 for (i = 0; i < beacon->rates_len; i++) 1299 *tag++ = beacon->rates[i]; 1300 } 1301 1302 if (beacon->rates_ex_len) { 1303 *tag++ = MFIE_TYPE_RATES_EX; 1304 *tag++ = beacon->rates_ex_len; 1305 for (i = 0; i < beacon->rates_ex_len; i++) 1306 *tag++ = beacon->rates_ex[i]; 1307 } 1308 1309 if (beacon->bCkipSupported) { 1310 static const u8 AironetIeOui[] = {0x00, 0x01, 0x66}; 1311 u8 CcxAironetBuf[30]; 1312 struct octet_string osCcxAironetIE; 1313 1314 memset(CcxAironetBuf, 0, 30); 1315 osCcxAironetIE.Octet = CcxAironetBuf; 1316 osCcxAironetIE.Length = sizeof(CcxAironetBuf); 1317 memcpy(osCcxAironetIE.Octet, AironetIeOui, 1318 sizeof(AironetIeOui)); 1319 1320 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |= 1321 (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC); 1322 tag = skb_put(skb, ckip_ie_len); 1323 *tag++ = MFIE_TYPE_AIRONET; 1324 *tag++ = osCcxAironetIE.Length; 1325 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length); 1326 tag += osCcxAironetIE.Length; 1327 } 1328 1329 if (beacon->bCcxRmEnable) { 1330 static const u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 1331 0x00}; 1332 struct octet_string osCcxRmCap; 1333 1334 osCcxRmCap.Octet = (u8 *) CcxRmCapBuf; 1335 osCcxRmCap.Length = sizeof(CcxRmCapBuf); 1336 tag = skb_put(skb, ccxrm_ie_len); 1337 *tag++ = MFIE_TYPE_GENERIC; 1338 *tag++ = osCcxRmCap.Length; 1339 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length); 1340 tag += osCcxRmCap.Length; 1341 } 1342 1343 if (beacon->BssCcxVerNumber >= 2) { 1344 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00}; 1345 struct octet_string osCcxVerNum; 1346 1347 CcxVerNumBuf[4] = beacon->BssCcxVerNumber; 1348 osCcxVerNum.Octet = CcxVerNumBuf; 1349 osCcxVerNum.Length = sizeof(CcxVerNumBuf); 1350 tag = skb_put(skb, cxvernum_ie_len); 1351 *tag++ = MFIE_TYPE_GENERIC; 1352 *tag++ = osCcxVerNum.Length; 1353 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length); 1354 tag += osCcxVerNum.Length; 1355 } 1356 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1357 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) { 1358 tag = skb_put(skb, ht_cap_len); 1359 *tag++ = MFIE_TYPE_HT_CAP; 1360 *tag++ = ht_cap_len - 2; 1361 memcpy(tag, ht_cap_buf, ht_cap_len - 2); 1362 tag += ht_cap_len - 2; 1363 } 1364 } 1365 1366 if (wpa_ie_len) { 1367 tag = skb_put(skb, ieee->wpa_ie_len); 1368 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len); 1369 1370 if (PMKCacheIdx >= 0) { 1371 tag = skb_put(skb, 18); 1372 *tag = 1; 1373 *(tag + 1) = 0; 1374 memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID, 1375 16); 1376 } 1377 } 1378 if (wmm_info_len) { 1379 tag = skb_put(skb, wmm_info_len); 1380 rtllib_WMM_Info(ieee, &tag); 1381 } 1382 1383 if (wps_ie_len && ieee->wps_ie) { 1384 tag = skb_put(skb, wps_ie_len); 1385 memcpy(tag, ieee->wps_ie, wps_ie_len); 1386 } 1387 1388 tag = skb_put(skb, turbo_info_len); 1389 if (turbo_info_len) 1390 rtllib_TURBO_Info(ieee, &tag); 1391 1392 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1393 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) { 1394 tag = skb_put(skb, ht_cap_len); 1395 *tag++ = MFIE_TYPE_GENERIC; 1396 *tag++ = ht_cap_len - 2; 1397 memcpy(tag, ht_cap_buf, ht_cap_len - 2); 1398 tag += ht_cap_len - 2; 1399 } 1400 1401 if (ieee->pHTInfo->bCurrentRT2RTAggregation) { 1402 tag = skb_put(skb, realtek_ie_len); 1403 *tag++ = MFIE_TYPE_GENERIC; 1404 *tag++ = realtek_ie_len - 2; 1405 memcpy(tag, realtek_ie_buf, realtek_ie_len - 2); 1406 } 1407 } 1408 1409 kfree(ieee->assocreq_ies); 1410 ieee->assocreq_ies = NULL; 1411 ies = &(hdr->info_element[0].id); 1412 ieee->assocreq_ies_len = (skb->data + skb->len) - ies; 1413 ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC); 1414 if (ieee->assocreq_ies) 1415 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len); 1416 else { 1417 netdev_info(ieee->dev, 1418 "%s()Warning: can't alloc memory for assocreq_ies\n", 1419 __func__); 1420 ieee->assocreq_ies_len = 0; 1421 } 1422 return skb; 1423} 1424 1425void rtllib_associate_abort(struct rtllib_device *ieee) 1426{ 1427 unsigned long flags; 1428 1429 spin_lock_irqsave(&ieee->lock, flags); 1430 1431 ieee->associate_seq++; 1432 1433 /* don't scan, and avoid to have the RX path possibily 1434 * try again to associate. Even do not react to AUTH or 1435 * ASSOC response. Just wait for the retry wq to be scheduled. 1436 * Here we will check if there are good nets to associate 1437 * with, so we retry or just get back to NO_LINK and scanning 1438 */ 1439 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) { 1440 RTLLIB_DEBUG_MGMT("Authentication failed\n"); 1441 ieee->softmac_stats.no_auth_rs++; 1442 } else { 1443 RTLLIB_DEBUG_MGMT("Association failed\n"); 1444 ieee->softmac_stats.no_ass_rs++; 1445 } 1446 1447 ieee->state = RTLLIB_ASSOCIATING_RETRY; 1448 1449 queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq, 1450 RTLLIB_SOFTMAC_ASSOC_RETRY_TIME); 1451 1452 spin_unlock_irqrestore(&ieee->lock, flags); 1453} 1454 1455static void rtllib_associate_abort_cb(unsigned long dev) 1456{ 1457 rtllib_associate_abort((struct rtllib_device *) dev); 1458} 1459 1460static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr) 1461{ 1462 struct rtllib_network *beacon = &ieee->current_network; 1463 struct sk_buff *skb; 1464 1465 RTLLIB_DEBUG_MGMT("Stopping scan\n"); 1466 1467 ieee->softmac_stats.tx_auth_rq++; 1468 1469 skb = rtllib_authentication_req(beacon, ieee, 0, daddr); 1470 1471 if (!skb) 1472 rtllib_associate_abort(ieee); 1473 else { 1474 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING; 1475 RTLLIB_DEBUG_MGMT("Sending authentication request\n"); 1476 softmac_mgmt_xmit(skb, ieee); 1477 if (!timer_pending(&ieee->associate_timer)) { 1478 ieee->associate_timer.expires = jiffies + (HZ / 2); 1479 add_timer(&ieee->associate_timer); 1480 } 1481 } 1482} 1483 1484static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, int chlen) 1485{ 1486 u8 *c; 1487 struct sk_buff *skb; 1488 struct rtllib_network *beacon = &ieee->current_network; 1489 1490 ieee->associate_seq++; 1491 ieee->softmac_stats.tx_auth_rq++; 1492 1493 skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid); 1494 1495 if (!skb) 1496 rtllib_associate_abort(ieee); 1497 else { 1498 c = skb_put(skb, chlen+2); 1499 *(c++) = MFIE_TYPE_CHALLENGE; 1500 *(c++) = chlen; 1501 memcpy(c, challenge, chlen); 1502 1503 RTLLIB_DEBUG_MGMT("Sending authentication challenge response\n"); 1504 1505 rtllib_encrypt_fragment(ieee, skb, 1506 sizeof(struct rtllib_hdr_3addr)); 1507 1508 softmac_mgmt_xmit(skb, ieee); 1509 mod_timer(&ieee->associate_timer, jiffies + (HZ/2)); 1510 } 1511 kfree(challenge); 1512} 1513 1514static void rtllib_associate_step2(struct rtllib_device *ieee) 1515{ 1516 struct sk_buff *skb; 1517 struct rtllib_network *beacon = &ieee->current_network; 1518 1519 del_timer_sync(&ieee->associate_timer); 1520 1521 RTLLIB_DEBUG_MGMT("Sending association request\n"); 1522 1523 ieee->softmac_stats.tx_ass_rq++; 1524 skb = rtllib_association_req(beacon, ieee); 1525 if (!skb) 1526 rtllib_associate_abort(ieee); 1527 else { 1528 softmac_mgmt_xmit(skb, ieee); 1529 mod_timer(&ieee->associate_timer, jiffies + (HZ/2)); 1530 } 1531} 1532 1533#define CANCELLED 2 1534static void rtllib_associate_complete_wq(void *data) 1535{ 1536 struct rtllib_device *ieee = (struct rtllib_device *) 1537 container_of_work_rsl(data, 1538 struct rtllib_device, 1539 associate_complete_wq); 1540 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *) 1541 (&(ieee->PowerSaveControl)); 1542 netdev_info(ieee->dev, "Associated successfully\n"); 1543 if (!ieee->is_silent_reset) { 1544 netdev_info(ieee->dev, "normal associate\n"); 1545 notify_wx_assoc_event(ieee); 1546 } 1547 1548 netif_carrier_on(ieee->dev); 1549 ieee->is_roaming = false; 1550 if (rtllib_is_54g(&ieee->current_network) && 1551 (ieee->modulation & RTLLIB_OFDM_MODULATION)) { 1552 ieee->rate = 108; 1553 netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate); 1554 } else { 1555 ieee->rate = 22; 1556 ieee->SetWirelessMode(ieee->dev, IEEE_B); 1557 netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate); 1558 } 1559 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1560 netdev_info(ieee->dev, "Successfully associated, ht enabled\n"); 1561 HTOnAssocRsp(ieee); 1562 } else { 1563 netdev_info(ieee->dev, 1564 "Successfully associated, ht not enabled(%d, %d)\n", 1565 ieee->pHTInfo->bCurrentHTSupport, 1566 ieee->pHTInfo->bEnableHT); 1567 memset(ieee->dot11HTOperationalRateSet, 0, 16); 1568 } 1569 ieee->LinkDetectInfo.SlotNum = 2 * (1 + 1570 ieee->current_network.beacon_interval / 1571 500); 1572 if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 || 1573 ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) { 1574 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1; 1575 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1; 1576 } 1577 pPSC->LpsIdleCount = 0; 1578 ieee->link_change(ieee->dev); 1579 1580 if (ieee->is_silent_reset) { 1581 netdev_info(ieee->dev, "silent reset associate\n"); 1582 ieee->is_silent_reset = false; 1583 } 1584 1585 if (ieee->data_hard_resume) 1586 ieee->data_hard_resume(ieee->dev); 1587 1588} 1589 1590static void rtllib_sta_send_associnfo(struct rtllib_device *ieee) 1591{ 1592} 1593 1594static void rtllib_associate_complete(struct rtllib_device *ieee) 1595{ 1596 del_timer_sync(&ieee->associate_timer); 1597 1598 ieee->state = RTLLIB_LINKED; 1599 rtllib_sta_send_associnfo(ieee); 1600 1601 queue_work_rsl(ieee->wq, &ieee->associate_complete_wq); 1602} 1603 1604static void rtllib_associate_procedure_wq(void *data) 1605{ 1606 struct rtllib_device *ieee = container_of_dwork_rsl(data, 1607 struct rtllib_device, 1608 associate_procedure_wq); 1609 rtllib_stop_scan_syncro(ieee); 1610 if (ieee->rtllib_ips_leave != NULL) 1611 ieee->rtllib_ips_leave(ieee->dev); 1612 down(&ieee->wx_sem); 1613 1614 if (ieee->data_hard_stop) 1615 ieee->data_hard_stop(ieee->dev); 1616 1617 rtllib_stop_scan(ieee); 1618 RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__, 1619 ieee->current_network.channel); 1620 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 1621 if (ieee->eRFPowerState == eRfOff) { 1622 RT_TRACE(COMP_DBG, 1623 "=============>%s():Rf state is eRfOff, schedule ipsleave wq again,return\n", 1624 __func__); 1625 if (ieee->rtllib_ips_leave_wq != NULL) 1626 ieee->rtllib_ips_leave_wq(ieee->dev); 1627 up(&ieee->wx_sem); 1628 return; 1629 } 1630 ieee->associate_seq = 1; 1631 1632 rtllib_associate_step1(ieee, ieee->current_network.bssid); 1633 1634 up(&ieee->wx_sem); 1635} 1636 1637inline void rtllib_softmac_new_net(struct rtllib_device *ieee, 1638 struct rtllib_network *net) 1639{ 1640 u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1]; 1641 int tmp_ssid_len = 0; 1642 1643 short apset, ssidset, ssidbroad, apmatch, ssidmatch; 1644 1645 /* we are interested in new new only if we are not associated 1646 * and we are not associating / authenticating 1647 */ 1648 if (ieee->state != RTLLIB_NOLINK) 1649 return; 1650 1651 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability & 1652 WLAN_CAPABILITY_ESS)) 1653 return; 1654 1655 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability & 1656 WLAN_CAPABILITY_IBSS)) 1657 return; 1658 1659 if ((ieee->iw_mode == IW_MODE_ADHOC) && 1660 (net->channel > ieee->ibss_maxjoin_chal)) 1661 return; 1662 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) { 1663 /* if the user specified the AP MAC, we need also the essid 1664 * This could be obtained by beacons or, if the network does not 1665 * broadcast it, it can be put manually. 1666 */ 1667 apset = ieee->wap_set; 1668 ssidset = ieee->ssid_set; 1669 ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0'); 1670 apmatch = (memcmp(ieee->current_network.bssid, net->bssid, 1671 ETH_ALEN) == 0); 1672 if (!ssidbroad) { 1673 ssidmatch = (ieee->current_network.ssid_len == 1674 net->hidden_ssid_len) && 1675 (!strncmp(ieee->current_network.ssid, 1676 net->hidden_ssid, net->hidden_ssid_len)); 1677 if (net->hidden_ssid_len > 0) { 1678 strncpy(net->ssid, net->hidden_ssid, 1679 net->hidden_ssid_len); 1680 net->ssid_len = net->hidden_ssid_len; 1681 ssidbroad = 1; 1682 } 1683 } else 1684 ssidmatch = 1685 (ieee->current_network.ssid_len == net->ssid_len) && 1686 (!strncmp(ieee->current_network.ssid, net->ssid, 1687 net->ssid_len)); 1688 1689 /* if the user set the AP check if match. 1690 * if the network does not broadcast essid we check the 1691 * user supplied ANY essid 1692 * if the network does broadcast and the user does not set 1693 * essid it is OK 1694 * if the network does broadcast and the user did set essid 1695 * check if essid match 1696 * if the ap is not set, check that the user set the bssid 1697 * and the network does broadcast and that those two bssid match 1698 */ 1699 if ((apset && apmatch && 1700 ((ssidset && ssidbroad && ssidmatch) || 1701 (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) || 1702 (!apset && ssidset && ssidbroad && ssidmatch) || 1703 (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) { 1704 /* if the essid is hidden replace it with the 1705 * essid provided by the user. 1706 */ 1707 if (!ssidbroad) { 1708 strncpy(tmp_ssid, ieee->current_network.ssid, 1709 IW_ESSID_MAX_SIZE); 1710 tmp_ssid_len = ieee->current_network.ssid_len; 1711 } 1712 memcpy(&ieee->current_network, net, 1713 sizeof(struct rtllib_network)); 1714 if (!ssidbroad) { 1715 strncpy(ieee->current_network.ssid, tmp_ssid, 1716 IW_ESSID_MAX_SIZE); 1717 ieee->current_network.ssid_len = tmp_ssid_len; 1718 } 1719 netdev_info(ieee->dev, 1720 "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d, mode:%x cur_net.flags:0x%x\n", 1721 ieee->current_network.ssid, 1722 ieee->current_network.channel, 1723 ieee->current_network.qos_data.supported, 1724 ieee->pHTInfo->bEnableHT, 1725 ieee->current_network.bssht.bdSupportHT, 1726 ieee->current_network.mode, 1727 ieee->current_network.flags); 1728 1729 if ((rtllib_act_scanning(ieee, false)) && 1730 !(ieee->softmac_features & IEEE_SOFTMAC_SCAN)) 1731 rtllib_stop_scan_syncro(ieee); 1732 1733 ieee->hwscan_ch_bk = ieee->current_network.channel; 1734 HTResetIOTSetting(ieee->pHTInfo); 1735 ieee->wmm_acm = 0; 1736 if (ieee->iw_mode == IW_MODE_INFRA) { 1737 /* Join the network for the first time */ 1738 ieee->AsocRetryCount = 0; 1739 if ((ieee->current_network.qos_data.supported == 1) && 1740 ieee->current_network.bssht.bdSupportHT) 1741 HTResetSelfAndSavePeerSetting(ieee, 1742 &(ieee->current_network)); 1743 else 1744 ieee->pHTInfo->bCurrentHTSupport = 1745 false; 1746 1747 ieee->state = RTLLIB_ASSOCIATING; 1748 if (ieee->LedControlHandler != NULL) 1749 ieee->LedControlHandler(ieee->dev, 1750 LED_CTL_START_TO_LINK); 1751 queue_delayed_work_rsl(ieee->wq, 1752 &ieee->associate_procedure_wq, 0); 1753 } else { 1754 if (rtllib_is_54g(&ieee->current_network) && 1755 (ieee->modulation & RTLLIB_OFDM_MODULATION)) { 1756 ieee->rate = 108; 1757 ieee->SetWirelessMode(ieee->dev, IEEE_G); 1758 netdev_info(ieee->dev, "Using G rates\n"); 1759 } else { 1760 ieee->rate = 22; 1761 ieee->SetWirelessMode(ieee->dev, IEEE_B); 1762 netdev_info(ieee->dev, "Using B rates\n"); 1763 } 1764 memset(ieee->dot11HTOperationalRateSet, 0, 16); 1765 ieee->state = RTLLIB_LINKED; 1766 } 1767 } 1768 } 1769} 1770 1771void rtllib_softmac_check_all_nets(struct rtllib_device *ieee) 1772{ 1773 unsigned long flags; 1774 struct rtllib_network *target; 1775 1776 spin_lock_irqsave(&ieee->lock, flags); 1777 1778 list_for_each_entry(target, &ieee->network_list, list) { 1779 1780 /* if the state become different that NOLINK means 1781 * we had found what we are searching for 1782 */ 1783 1784 if (ieee->state != RTLLIB_NOLINK) 1785 break; 1786 1787 if (ieee->scan_age == 0 || time_after(target->last_scanned + 1788 ieee->scan_age, jiffies)) 1789 rtllib_softmac_new_net(ieee, target); 1790 } 1791 spin_unlock_irqrestore(&ieee->lock, flags); 1792} 1793 1794static inline u16 auth_parse(struct sk_buff *skb, u8 **challenge, int *chlen) 1795{ 1796 struct rtllib_authentication *a; 1797 u8 *t; 1798 1799 if (skb->len < (sizeof(struct rtllib_authentication) - 1800 sizeof(struct rtllib_info_element))) { 1801 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len); 1802 return 0xcafe; 1803 } 1804 *challenge = NULL; 1805 a = (struct rtllib_authentication *) skb->data; 1806 if (skb->len > (sizeof(struct rtllib_authentication) + 3)) { 1807 t = skb->data + sizeof(struct rtllib_authentication); 1808 1809 if (*(t++) == MFIE_TYPE_CHALLENGE) { 1810 *chlen = *(t++); 1811 *challenge = kmemdup(t, *chlen, GFP_ATOMIC); 1812 if (!*challenge) 1813 return -ENOMEM; 1814 } 1815 } 1816 return cpu_to_le16(a->status); 1817} 1818 1819static int auth_rq_parse(struct sk_buff *skb, u8 *dest) 1820{ 1821 struct rtllib_authentication *a; 1822 1823 if (skb->len < (sizeof(struct rtllib_authentication) - 1824 sizeof(struct rtllib_info_element))) { 1825 RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n", 1826 skb->len); 1827 return -1; 1828 } 1829 a = (struct rtllib_authentication *) skb->data; 1830 1831 memcpy(dest, a->header.addr2, ETH_ALEN); 1832 1833 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN) 1834 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; 1835 1836 return WLAN_STATUS_SUCCESS; 1837} 1838 1839static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb, 1840 u8 *src) 1841{ 1842 u8 *tag; 1843 u8 *skbend; 1844 u8 *ssid = NULL; 1845 u8 ssidlen = 0; 1846 struct rtllib_hdr_3addr *header = 1847 (struct rtllib_hdr_3addr *) skb->data; 1848 bool bssid_match; 1849 1850 if (skb->len < sizeof(struct rtllib_hdr_3addr)) 1851 return -1; /* corrupted */ 1852 1853 bssid_match = 1854 (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) && 1855 (!is_broadcast_ether_addr(header->addr3)); 1856 if (bssid_match) 1857 return -1; 1858 1859 memcpy(src, header->addr2, ETH_ALEN); 1860 1861 skbend = (u8 *)skb->data + skb->len; 1862 1863 tag = skb->data + sizeof(struct rtllib_hdr_3addr); 1864 1865 while (tag + 1 < skbend) { 1866 if (*tag == 0) { 1867 ssid = tag + 2; 1868 ssidlen = *(tag + 1); 1869 break; 1870 } 1871 tag++; /* point to the len field */ 1872 tag = tag + *(tag); /* point to the last data byte of the tag */ 1873 tag++; /* point to the next tag */ 1874 } 1875 1876 if (ssidlen == 0) 1877 return 1; 1878 1879 if (!ssid) 1880 return 1; /* ssid not found in tagged param */ 1881 1882 return !strncmp(ssid, ieee->current_network.ssid, ssidlen); 1883} 1884 1885static int assoc_rq_parse(struct sk_buff *skb, u8 *dest) 1886{ 1887 struct rtllib_assoc_request_frame *a; 1888 1889 if (skb->len < (sizeof(struct rtllib_assoc_request_frame) - 1890 sizeof(struct rtllib_info_element))) { 1891 1892 RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len); 1893 return -1; 1894 } 1895 1896 a = (struct rtllib_assoc_request_frame *) skb->data; 1897 1898 memcpy(dest, a->header.addr2, ETH_ALEN); 1899 1900 return 0; 1901} 1902 1903static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb, 1904 int *aid) 1905{ 1906 struct rtllib_assoc_response_frame *response_head; 1907 u16 status_code; 1908 1909 if (skb->len < sizeof(struct rtllib_assoc_response_frame)) { 1910 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len); 1911 return 0xcafe; 1912 } 1913 1914 response_head = (struct rtllib_assoc_response_frame *) skb->data; 1915 *aid = le16_to_cpu(response_head->aid) & 0x3fff; 1916 1917 status_code = le16_to_cpu(response_head->status); 1918 if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES || 1919 status_code == WLAN_STATUS_CAPS_UNSUPPORTED) && 1920 ((ieee->mode == IEEE_G) && 1921 (ieee->current_network.mode == IEEE_N_24G) && 1922 (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) { 1923 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE; 1924 } else { 1925 ieee->AsocRetryCount = 0; 1926 } 1927 1928 return le16_to_cpu(response_head->status); 1929} 1930 1931void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb) 1932{ 1933 u8 dest[ETH_ALEN]; 1934 1935 ieee->softmac_stats.rx_probe_rq++; 1936 if (probe_rq_parse(ieee, skb, dest) > 0) { 1937 ieee->softmac_stats.tx_probe_rs++; 1938 rtllib_resp_to_probe(ieee, dest); 1939 } 1940} 1941 1942static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee, 1943 struct sk_buff *skb) 1944{ 1945 u8 dest[ETH_ALEN]; 1946 int status; 1947 1948 ieee->softmac_stats.rx_auth_rq++; 1949 1950 status = auth_rq_parse(skb, dest); 1951 if (status != -1) 1952 rtllib_resp_to_auth(ieee, status, dest); 1953} 1954 1955static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee, 1956 struct sk_buff *skb) 1957{ 1958 1959 u8 dest[ETH_ALEN]; 1960 1961 ieee->softmac_stats.rx_ass_rq++; 1962 if (assoc_rq_parse(skb, dest) != -1) 1963 rtllib_resp_to_assoc_rq(ieee, dest); 1964 1965 netdev_info(ieee->dev, "New client associated: %pM\n", dest); 1966} 1967 1968void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr) 1969{ 1970 1971 struct sk_buff *buf = rtllib_null_func(ieee, pwr); 1972 1973 if (buf) 1974 softmac_ps_mgmt_xmit(buf, ieee); 1975} 1976EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame); 1977 1978void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee) 1979{ 1980 struct sk_buff *buf = rtllib_pspoll_func(ieee); 1981 1982 if (buf) 1983 softmac_ps_mgmt_xmit(buf, ieee); 1984} 1985 1986static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time) 1987{ 1988 int timeout = ieee->ps_timeout; 1989 u8 dtim; 1990 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *) 1991 (&(ieee->PowerSaveControl)); 1992 1993 if (ieee->LPSDelayCnt) { 1994 ieee->LPSDelayCnt--; 1995 return 0; 1996 } 1997 1998 dtim = ieee->current_network.dtim_data; 1999 if (!(dtim & RTLLIB_DTIM_VALID)) 2000 return 0; 2001 timeout = ieee->current_network.beacon_interval; 2002 ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID; 2003 /* there's no need to nofity AP that I find you buffered 2004 * with broadcast packet 2005 */ 2006 if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps)) 2007 return 2; 2008 2009 if (!time_after(jiffies, 2010 ieee->dev->trans_start + msecs_to_jiffies(timeout))) 2011 return 0; 2012 if (!time_after(jiffies, 2013 ieee->last_rx_ps_time + msecs_to_jiffies(timeout))) 2014 return 0; 2015 if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) && 2016 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head)) 2017 return 0; 2018 2019 if (time) { 2020 if (ieee->bAwakePktSent) { 2021 pPSC->LPSAwakeIntvl = 1; 2022 } else { 2023 u8 MaxPeriod = 1; 2024 2025 if (pPSC->LPSAwakeIntvl == 0) 2026 pPSC->LPSAwakeIntvl = 1; 2027 if (pPSC->RegMaxLPSAwakeIntvl == 0) 2028 MaxPeriod = 1; 2029 else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF) 2030 MaxPeriod = ieee->current_network.dtim_period; 2031 else 2032 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl; 2033 pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >= 2034 MaxPeriod) ? MaxPeriod : 2035 (pPSC->LPSAwakeIntvl + 1); 2036 } 2037 { 2038 u8 LPSAwakeIntvl_tmp = 0; 2039 u8 period = ieee->current_network.dtim_period; 2040 u8 count = ieee->current_network.tim.tim_count; 2041 2042 if (count == 0) { 2043 if (pPSC->LPSAwakeIntvl > period) 2044 LPSAwakeIntvl_tmp = period + 2045 (pPSC->LPSAwakeIntvl - 2046 period) - 2047 ((pPSC->LPSAwakeIntvl-period) % 2048 period); 2049 else 2050 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl; 2051 2052 } else { 2053 if (pPSC->LPSAwakeIntvl > 2054 ieee->current_network.tim.tim_count) 2055 LPSAwakeIntvl_tmp = count + 2056 (pPSC->LPSAwakeIntvl - count) - 2057 ((pPSC->LPSAwakeIntvl-count)%period); 2058 else 2059 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl; 2060 } 2061 2062 *time = ieee->current_network.last_dtim_sta_time 2063 + msecs_to_jiffies(ieee->current_network.beacon_interval * 2064 LPSAwakeIntvl_tmp); 2065 } 2066 } 2067 2068 return 1; 2069 2070 2071} 2072 2073static inline void rtllib_sta_ps(struct rtllib_device *ieee) 2074{ 2075 u64 time; 2076 short sleep; 2077 unsigned long flags, flags2; 2078 2079 spin_lock_irqsave(&ieee->lock, flags); 2080 2081 if ((ieee->ps == RTLLIB_PS_DISABLED || 2082 ieee->iw_mode != IW_MODE_INFRA || 2083 ieee->state != RTLLIB_LINKED)) { 2084 RT_TRACE(COMP_DBG, 2085 "=====>%s(): no need to ps,wake up!! ieee->ps is %d, ieee->iw_mode is %d, ieee->state is %d\n", 2086 __func__, ieee->ps, ieee->iw_mode, 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, 2202 "error to get payload of 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} 2226 2227inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb, 2228 struct rtllib_rx_stats *rx_stats) 2229{ 2230 u16 errcode; 2231 int aid; 2232 u8 *ies; 2233 struct rtllib_assoc_response_frame *assoc_resp; 2234 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; 2235 2236 RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n", 2237 WLAN_FC_GET_STYPE(header->frame_ctl)); 2238 2239 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 2240 ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED && 2241 (ieee->iw_mode == IW_MODE_INFRA)) { 2242 errcode = assoc_parse(ieee, skb, &aid); 2243 if (0 == errcode) { 2244 struct rtllib_network *network = 2245 kzalloc(sizeof(struct rtllib_network), 2246 GFP_ATOMIC); 2247 2248 if (!network) 2249 return 1; 2250 ieee->state = RTLLIB_LINKED; 2251 ieee->assoc_id = aid; 2252 ieee->softmac_stats.rx_ass_ok++; 2253 /* station support qos */ 2254 /* Let the register setting default with Legacy station */ 2255 assoc_resp = (struct rtllib_assoc_response_frame *)skb->data; 2256 if (ieee->current_network.qos_data.supported == 1) { 2257 if (rtllib_parse_info_param(ieee, assoc_resp->info_element, 2258 rx_stats->len - sizeof(*assoc_resp), 2259 network, rx_stats)) { 2260 kfree(network); 2261 return 1; 2262 } 2263 memcpy(ieee->pHTInfo->PeerHTCapBuf, 2264 network->bssht.bdHTCapBuf, 2265 network->bssht.bdHTCapLen); 2266 memcpy(ieee->pHTInfo->PeerHTInfoBuf, 2267 network->bssht.bdHTInfoBuf, 2268 network->bssht.bdHTInfoLen); 2269 if (ieee->handle_assoc_response != NULL) 2270 ieee->handle_assoc_response(ieee->dev, 2271 (struct rtllib_assoc_response_frame *)header, 2272 network); 2273 } 2274 kfree(network); 2275 2276 kfree(ieee->assocresp_ies); 2277 ieee->assocresp_ies = NULL; 2278 ies = &(assoc_resp->info_element[0].id); 2279 ieee->assocresp_ies_len = (skb->data + skb->len) - ies; 2280 ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len, 2281 GFP_ATOMIC); 2282 if (ieee->assocresp_ies) 2283 memcpy(ieee->assocresp_ies, ies, 2284 ieee->assocresp_ies_len); 2285 else { 2286 netdev_info(ieee->dev, 2287 "%s()Warning: can't alloc memory for assocresp_ies\n", 2288 __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 netdev_info(ieee->dev, 2296 "Association response status code 0x%x\n", 2297 errcode); 2298 RTLLIB_DEBUG_MGMT( 2299 "Association response status code 0x%x\n", 2300 errcode); 2301 if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT) 2302 queue_delayed_work_rsl(ieee->wq, 2303 &ieee->associate_procedure_wq, 0); 2304 else 2305 rtllib_associate_abort(ieee); 2306 } 2307 } 2308 return 0; 2309} 2310 2311static void rtllib_rx_auth_resp(struct rtllib_device *ieee, struct sk_buff *skb) 2312{ 2313 u16 errcode; 2314 u8 *challenge; 2315 int chlen = 0; 2316 bool bSupportNmode = true, bHalfSupportNmode = false; 2317 2318 errcode = auth_parse(skb, &challenge, &chlen); 2319 2320 if (errcode) { 2321 ieee->softmac_stats.rx_auth_rs_err++; 2322 RTLLIB_DEBUG_MGMT("Authentication respose status code 0x%x", 2323 errcode); 2324 2325 netdev_info(ieee->dev, 2326 "Authentication respose status code 0x%x", errcode); 2327 rtllib_associate_abort(ieee); 2328 return; 2329 } 2330 2331 if (ieee->open_wep || !challenge) { 2332 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED; 2333 ieee->softmac_stats.rx_auth_rs_ok++; 2334 if (!(ieee->pHTInfo->IOTAction & HT_IOT_ACT_PURE_N_MODE)) { 2335 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) { 2336 if (IsHTHalfNmodeAPs(ieee)) { 2337 bSupportNmode = true; 2338 bHalfSupportNmode = true; 2339 } else { 2340 bSupportNmode = false; 2341 bHalfSupportNmode = false; 2342 } 2343 } 2344 } 2345 /* Dummy wirless mode setting to avoid encryption issue */ 2346 if (bSupportNmode) { 2347 ieee->SetWirelessMode(ieee->dev, 2348 ieee->current_network.mode); 2349 } else { 2350 /*TODO*/ 2351 ieee->SetWirelessMode(ieee->dev, IEEE_G); 2352 } 2353 2354 if ((ieee->current_network.mode == IEEE_N_24G) && 2355 bHalfSupportNmode) { 2356 netdev_info(ieee->dev, "======>enter half N mode\n"); 2357 ieee->bHalfWirelessN24GMode = true; 2358 } else { 2359 ieee->bHalfWirelessN24GMode = false; 2360 } 2361 rtllib_associate_step2(ieee); 2362 } else { 2363 rtllib_auth_challenge(ieee, challenge, chlen); 2364 } 2365} 2366 2367inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb, 2368 struct rtllib_rx_stats *rx_stats) 2369{ 2370 2371 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) { 2372 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING && 2373 (ieee->iw_mode == IW_MODE_INFRA)) { 2374 RTLLIB_DEBUG_MGMT("Received authentication response"); 2375 rtllib_rx_auth_resp(ieee, skb); 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 netdev_info(ieee->dev, 2397 "==========>received disassoc/deauth(%x) 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 } 2453 return 0; 2454} 2455 2456/* following are for a simpler TX queue management. 2457 * Instead of using netif_[stop/wake]_queue the driver 2458 * will use these two functions (plus a reset one), that 2459 * will internally use the kernel netif_* and takes 2460 * care of the ieee802.11 fragmentation. 2461 * So the driver receives a fragment per time and might 2462 * call the stop function when it wants to not 2463 * have enough room to TX an entire packet. 2464 * This might be useful if each fragment needs it's own 2465 * descriptor, thus just keep a total free memory > than 2466 * the max fragmentation threshold is not enough.. If the 2467 * ieee802.11 stack passed a TXB struct then you need 2468 * to keep N free descriptors where 2469 * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD 2470 * In this way you need just one and the 802.11 stack 2471 * will take care of buffering fragments and pass them to 2472 * to the driver later, when it wakes the queue. 2473 */ 2474void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee) 2475{ 2476 2477 unsigned int queue_index = txb->queue_index; 2478 unsigned long flags; 2479 int i; 2480 struct cb_desc *tcb_desc = NULL; 2481 unsigned long queue_len = 0; 2482 2483 spin_lock_irqsave(&ieee->lock, flags); 2484 2485 /* called with 2nd parm 0, no tx mgmt lock required */ 2486 rtllib_sta_wakeup(ieee, 0); 2487 2488 /* update the tx status */ 2489 tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb + 2490 MAX_DEV_ADDR_SIZE); 2491 if (tcb_desc->bMulticast) 2492 ieee->stats.multicast++; 2493 2494 /* if xmit available, just xmit it immediately, else just insert it to 2495 * the wait queue 2496 */ 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 } 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 rtllib_txb_free(ieee->tx_pending.txb); 2544 ieee->tx_pending.txb = NULL; 2545} 2546 2547 2548void rtllib_reset_queue(struct rtllib_device *ieee) 2549{ 2550 unsigned long flags; 2551 2552 spin_lock_irqsave(&ieee->lock, flags); 2553 init_mgmt_queue(ieee); 2554 if (ieee->tx_pending.txb) { 2555 rtllib_txb_free(ieee->tx_pending.txb); 2556 ieee->tx_pending.txb = NULL; 2557 } 2558 ieee->queue_stop = 0; 2559 spin_unlock_irqrestore(&ieee->lock, flags); 2560 2561} 2562EXPORT_SYMBOL(rtllib_reset_queue); 2563 2564void rtllib_wake_queue(struct rtllib_device *ieee) 2565{ 2566 2567 unsigned long flags; 2568 struct sk_buff *skb; 2569 struct rtllib_hdr_3addr *header; 2570 2571 spin_lock_irqsave(&ieee->lock, flags); 2572 if (!ieee->queue_stop) 2573 goto exit; 2574 2575 ieee->queue_stop = 0; 2576 2577 if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) { 2578 while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) { 2579 2580 header = (struct rtllib_hdr_3addr *) skb->data; 2581 2582 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 2583 2584 if (ieee->seq_ctrl[0] == 0xFFF) 2585 ieee->seq_ctrl[0] = 0; 2586 else 2587 ieee->seq_ctrl[0]++; 2588 2589 ieee->softmac_data_hard_start_xmit(skb, ieee->dev, 2590 ieee->basic_rate); 2591 } 2592 } 2593 if (!ieee->queue_stop && ieee->tx_pending.txb) 2594 rtllib_resume_tx(ieee); 2595 2596 if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) { 2597 ieee->softmac_stats.swtxawake++; 2598 netif_wake_queue(ieee->dev); 2599 } 2600 2601exit: 2602 spin_unlock_irqrestore(&ieee->lock, flags); 2603} 2604 2605 2606void rtllib_stop_queue(struct rtllib_device *ieee) 2607{ 2608 2609 if (!netif_queue_stopped(ieee->dev)) { 2610 netif_stop_queue(ieee->dev); 2611 ieee->softmac_stats.swtxstop++; 2612 } 2613 ieee->queue_stop = 1; 2614 2615} 2616 2617void rtllib_stop_all_queues(struct rtllib_device *ieee) 2618{ 2619 unsigned int i; 2620 2621 for (i = 0; i < ieee->dev->num_tx_queues; i++) 2622 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies; 2623 2624 netif_tx_stop_all_queues(ieee->dev); 2625} 2626 2627void rtllib_wake_all_queues(struct rtllib_device *ieee) 2628{ 2629 netif_tx_wake_all_queues(ieee->dev); 2630} 2631 2632inline void rtllib_randomize_cell(struct rtllib_device *ieee) 2633{ 2634 2635 random_ether_addr(ieee->current_network.bssid); 2636} 2637 2638/* called in user context only */ 2639void rtllib_start_master_bss(struct rtllib_device *ieee) 2640{ 2641 ieee->assoc_id = 1; 2642 2643 if (ieee->current_network.ssid_len == 0) { 2644 strncpy(ieee->current_network.ssid, 2645 RTLLIB_DEFAULT_TX_ESSID, 2646 IW_ESSID_MAX_SIZE); 2647 2648 ieee->current_network.ssid_len = 2649 strlen(RTLLIB_DEFAULT_TX_ESSID); 2650 ieee->ssid_set = 1; 2651 } 2652 2653 memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN); 2654 2655 ieee->set_chan(ieee->dev, ieee->current_network.channel); 2656 ieee->state = RTLLIB_LINKED; 2657 ieee->link_change(ieee->dev); 2658 notify_wx_assoc_event(ieee); 2659 2660 if (ieee->data_hard_resume) 2661 ieee->data_hard_resume(ieee->dev); 2662 2663 netif_carrier_on(ieee->dev); 2664} 2665 2666static void rtllib_start_monitor_mode(struct rtllib_device *ieee) 2667{ 2668 /* reset hardware status */ 2669 if (ieee->raw_tx) { 2670 if (ieee->data_hard_resume) 2671 ieee->data_hard_resume(ieee->dev); 2672 2673 netif_carrier_on(ieee->dev); 2674 } 2675} 2676 2677static void rtllib_start_ibss_wq(void *data) 2678{ 2679 struct rtllib_device *ieee = container_of_dwork_rsl(data, 2680 struct rtllib_device, start_ibss_wq); 2681 /* iwconfig mode ad-hoc will schedule this and return 2682 * on the other hand this will block further iwconfig SET 2683 * operations because of the wx_sem hold. 2684 * Anyway some most set operations set a flag to speed-up 2685 * (abort) this wq (when syncro scanning) before sleeping 2686 * on the semaphore 2687 */ 2688 if (!ieee->proto_started) { 2689 netdev_info(ieee->dev, "==========oh driver down return\n"); 2690 return; 2691 } 2692 down(&ieee->wx_sem); 2693 2694 if (ieee->current_network.ssid_len == 0) { 2695 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID); 2696 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID); 2697 ieee->ssid_set = 1; 2698 } 2699 2700 ieee->state = RTLLIB_NOLINK; 2701 ieee->mode = IEEE_G; 2702 /* check if we have this cell in our network list */ 2703 rtllib_softmac_check_all_nets(ieee); 2704 2705 2706 /* if not then the state is not linked. Maybe the user switched to 2707 * ad-hoc mode just after being in monitor mode, or just after 2708 * being very few time in managed mode (so the card have had no 2709 * time to scan all the chans..) or we have just run up the iface 2710 * after setting ad-hoc mode. So we have to give another try.. 2711 * Here, in ibss mode, should be safe to do this without extra care 2712 * (in bss mode we had to make sure no-one tried to associate when 2713 * we had just checked the ieee->state and we was going to start the 2714 * scan) because in ibss mode the rtllib_new_net function, when 2715 * finds a good net, just set the ieee->state to RTLLIB_LINKED, 2716 * so, at worst, we waste a bit of time to initiate an unneeded syncro 2717 * scan, that will stop at the first round because it sees the state 2718 * associated. 2719 */ 2720 if (ieee->state == RTLLIB_NOLINK) 2721 rtllib_start_scan_syncro(ieee, 0); 2722 2723 /* the network definitively is not here.. create a new cell */ 2724 if (ieee->state == RTLLIB_NOLINK) { 2725 netdev_info(ieee->dev, "creating new IBSS cell\n"); 2726 ieee->current_network.channel = ieee->IbssStartChnl; 2727 if (!ieee->wap_set) 2728 rtllib_randomize_cell(ieee); 2729 2730 if (ieee->modulation & RTLLIB_CCK_MODULATION) { 2731 2732 ieee->current_network.rates_len = 4; 2733 2734 ieee->current_network.rates[0] = 2735 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB; 2736 ieee->current_network.rates[1] = 2737 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB; 2738 ieee->current_network.rates[2] = 2739 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB; 2740 ieee->current_network.rates[3] = 2741 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB; 2742 2743 } else 2744 ieee->current_network.rates_len = 0; 2745 2746 if (ieee->modulation & RTLLIB_OFDM_MODULATION) { 2747 ieee->current_network.rates_ex_len = 8; 2748 2749 ieee->current_network.rates_ex[0] = 2750 RTLLIB_OFDM_RATE_6MB; 2751 ieee->current_network.rates_ex[1] = 2752 RTLLIB_OFDM_RATE_9MB; 2753 ieee->current_network.rates_ex[2] = 2754 RTLLIB_OFDM_RATE_12MB; 2755 ieee->current_network.rates_ex[3] = 2756 RTLLIB_OFDM_RATE_18MB; 2757 ieee->current_network.rates_ex[4] = 2758 RTLLIB_OFDM_RATE_24MB; 2759 ieee->current_network.rates_ex[5] = 2760 RTLLIB_OFDM_RATE_36MB; 2761 ieee->current_network.rates_ex[6] = 2762 RTLLIB_OFDM_RATE_48MB; 2763 ieee->current_network.rates_ex[7] = 2764 RTLLIB_OFDM_RATE_54MB; 2765 2766 ieee->rate = 108; 2767 } else { 2768 ieee->current_network.rates_ex_len = 0; 2769 ieee->rate = 22; 2770 } 2771 2772 ieee->current_network.qos_data.supported = 0; 2773 ieee->SetWirelessMode(ieee->dev, IEEE_G); 2774 ieee->current_network.mode = ieee->mode; 2775 ieee->current_network.atim_window = 0; 2776 ieee->current_network.capability = WLAN_CAPABILITY_IBSS; 2777 } 2778 2779 netdev_info(ieee->dev, "%s(): ieee->mode = %d\n", __func__, ieee->mode); 2780 if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G)) 2781 HTUseDefaultSetting(ieee); 2782 else 2783 ieee->pHTInfo->bCurrentHTSupport = false; 2784 2785 ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS, 2786 (u8 *)(&ieee->state)); 2787 2788 ieee->state = RTLLIB_LINKED; 2789 ieee->link_change(ieee->dev); 2790 2791 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 2792 if (ieee->LedControlHandler != NULL) 2793 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK); 2794 2795 rtllib_start_send_beacons(ieee); 2796 2797 notify_wx_assoc_event(ieee); 2798 2799 if (ieee->data_hard_resume) 2800 ieee->data_hard_resume(ieee->dev); 2801 2802 netif_carrier_on(ieee->dev); 2803 2804 up(&ieee->wx_sem); 2805} 2806 2807inline void rtllib_start_ibss(struct rtllib_device *ieee) 2808{ 2809 queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, 2810 msecs_to_jiffies(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 tasklet_kill(&ieee->ps_task); 3171} 3172 3173/******************************************************** 3174 * Start of WPA code. * 3175 * this is stolen from the ipw2200 driver * 3176 ********************************************************/ 3177 3178 3179static int rtllib_wpa_enable(struct rtllib_device *ieee, int value) 3180{ 3181 /* This is called when wpa_supplicant loads and closes the driver 3182 * interface. 3183 */ 3184 netdev_info(ieee->dev, "%s WPA\n", value ? "enabling" : "disabling"); 3185 ieee->wpa_enabled = value; 3186 memset(ieee->ap_mac_addr, 0, 6); 3187 return 0; 3188} 3189 3190 3191static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie, 3192 int wpa_ie_len) 3193{ 3194 /* make sure WPA is enabled */ 3195 rtllib_wpa_enable(ieee, 1); 3196 3197 rtllib_disassociate(ieee); 3198} 3199 3200 3201static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason) 3202{ 3203 3204 int ret = 0; 3205 3206 switch (command) { 3207 case IEEE_MLME_STA_DEAUTH: 3208 break; 3209 3210 case IEEE_MLME_STA_DISASSOC: 3211 rtllib_disassociate(ieee); 3212 break; 3213 3214 default: 3215 netdev_info(ieee->dev, "Unknown MLME request: %d\n", command); 3216 ret = -EOPNOTSUPP; 3217 } 3218 3219 return ret; 3220} 3221 3222 3223static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee, 3224 struct ieee_param *param, int plen) 3225{ 3226 u8 *buf; 3227 3228 if (param->u.wpa_ie.len > MAX_WPA_IE_LEN || 3229 (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL)) 3230 return -EINVAL; 3231 3232 if (param->u.wpa_ie.len) { 3233 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len, 3234 GFP_KERNEL); 3235 if (buf == NULL) 3236 return -ENOMEM; 3237 3238 kfree(ieee->wpa_ie); 3239 ieee->wpa_ie = buf; 3240 ieee->wpa_ie_len = param->u.wpa_ie.len; 3241 } else { 3242 kfree(ieee->wpa_ie); 3243 ieee->wpa_ie = NULL; 3244 ieee->wpa_ie_len = 0; 3245 } 3246 3247 rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len); 3248 return 0; 3249} 3250 3251#define AUTH_ALG_OPEN_SYSTEM 0x1 3252#define AUTH_ALG_SHARED_KEY 0x2 3253#define AUTH_ALG_LEAP 0x4 3254static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value) 3255{ 3256 3257 struct rtllib_security sec = { 3258 .flags = SEC_AUTH_MODE, 3259 }; 3260 3261 if (value & AUTH_ALG_SHARED_KEY) { 3262 sec.auth_mode = WLAN_AUTH_SHARED_KEY; 3263 ieee->open_wep = 0; 3264 ieee->auth_mode = 1; 3265 } else if (value & AUTH_ALG_OPEN_SYSTEM) { 3266 sec.auth_mode = WLAN_AUTH_OPEN; 3267 ieee->open_wep = 1; 3268 ieee->auth_mode = 0; 3269 } else if (value & AUTH_ALG_LEAP) { 3270 sec.auth_mode = WLAN_AUTH_LEAP >> 6; 3271 ieee->open_wep = 1; 3272 ieee->auth_mode = 2; 3273 } 3274 3275 3276 if (ieee->set_security) 3277 ieee->set_security(ieee->dev, &sec); 3278 3279 return 0; 3280} 3281 3282static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value) 3283{ 3284 int ret = 0; 3285 unsigned long flags; 3286 3287 switch (name) { 3288 case IEEE_PARAM_WPA_ENABLED: 3289 ret = rtllib_wpa_enable(ieee, value); 3290 break; 3291 3292 case IEEE_PARAM_TKIP_COUNTERMEASURES: 3293 ieee->tkip_countermeasures = value; 3294 break; 3295 3296 case IEEE_PARAM_DROP_UNENCRYPTED: 3297 { 3298 /* HACK: 3299 * 3300 * wpa_supplicant calls set_wpa_enabled when the driver 3301 * is loaded and unloaded, regardless of if WPA is being 3302 * used. No other calls are made which can be used to 3303 * determine if encryption will be used or not prior to 3304 * association being expected. If encryption is not being 3305 * used, drop_unencrypted is set to false, else true -- we 3306 * can use this to determine if the CAP_PRIVACY_ON bit should 3307 * be set. 3308 */ 3309 struct rtllib_security sec = { 3310 .flags = SEC_ENABLED, 3311 .enabled = value, 3312 }; 3313 ieee->drop_unencrypted = value; 3314 /* We only change SEC_LEVEL for open mode. Others 3315 * are set by ipw_wpa_set_encryption. 3316 */ 3317 if (!value) { 3318 sec.flags |= SEC_LEVEL; 3319 sec.level = SEC_LEVEL_0; 3320 } else { 3321 sec.flags |= SEC_LEVEL; 3322 sec.level = SEC_LEVEL_1; 3323 } 3324 if (ieee->set_security) 3325 ieee->set_security(ieee->dev, &sec); 3326 break; 3327 } 3328 3329 case IEEE_PARAM_PRIVACY_INVOKED: 3330 ieee->privacy_invoked = value; 3331 break; 3332 3333 case IEEE_PARAM_AUTH_ALGS: 3334 ret = rtllib_wpa_set_auth_algs(ieee, value); 3335 break; 3336 3337 case IEEE_PARAM_IEEE_802_1X: 3338 ieee->ieee802_1x = value; 3339 break; 3340 case IEEE_PARAM_WPAX_SELECT: 3341 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags); 3342 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags); 3343 break; 3344 3345 default: 3346 netdev_info(ieee->dev, "Unknown WPA param: %d\n", name); 3347 ret = -EOPNOTSUPP; 3348 } 3349 3350 return ret; 3351} 3352 3353/* implementation borrowed from hostap driver */ 3354static int rtllib_wpa_set_encryption(struct rtllib_device *ieee, 3355 struct ieee_param *param, int param_len, 3356 u8 is_mesh) 3357{ 3358 int ret = 0; 3359 struct lib80211_crypto_ops *ops; 3360 struct lib80211_crypt_data **crypt; 3361 3362 struct rtllib_security sec = { 3363 .flags = 0, 3364 }; 3365 3366 param->u.crypt.err = 0; 3367 param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0'; 3368 3369 if (param_len != 3370 (int) ((char *) param->u.crypt.key - (char *) param) + 3371 param->u.crypt.key_len) { 3372 netdev_info(ieee->dev, "Len mismatch %d, %d\n", param_len, 3373 param->u.crypt.key_len); 3374 return -EINVAL; 3375 } 3376 if (is_broadcast_ether_addr(param->sta_addr)) { 3377 if (param->u.crypt.idx >= NUM_WEP_KEYS) 3378 return -EINVAL; 3379 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx]; 3380 } else { 3381 return -EINVAL; 3382 } 3383 3384 if (strcmp(param->u.crypt.alg, "none") == 0) { 3385 if (crypt) { 3386 sec.enabled = 0; 3387 sec.level = SEC_LEVEL_0; 3388 sec.flags |= SEC_ENABLED | SEC_LEVEL; 3389 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); 3390 } 3391 goto done; 3392 } 3393 sec.enabled = 1; 3394 sec.flags |= SEC_ENABLED; 3395 3396 /* IPW HW cannot build TKIP MIC, host decryption still needed. */ 3397 if (!(ieee->host_encrypt || ieee->host_decrypt) && 3398 strcmp(param->u.crypt.alg, "R-TKIP")) 3399 goto skip_host_crypt; 3400 3401 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3402 if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) { 3403 request_module("rtllib_crypt_wep"); 3404 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3405 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) { 3406 request_module("rtllib_crypt_tkip"); 3407 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3408 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) { 3409 request_module("rtllib_crypt_ccmp"); 3410 ops = lib80211_get_crypto_ops(param->u.crypt.alg); 3411 } 3412 if (ops == NULL) { 3413 netdev_info(ieee->dev, "unknown crypto alg '%s'\n", 3414 param->u.crypt.alg); 3415 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG; 3416 ret = -EINVAL; 3417 goto done; 3418 } 3419 if (*crypt == NULL || (*crypt)->ops != ops) { 3420 struct lib80211_crypt_data *new_crypt; 3421 3422 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt); 3423 3424 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL); 3425 if (new_crypt == NULL) { 3426 ret = -ENOMEM; 3427 goto done; 3428 } 3429 new_crypt->ops = ops; 3430 if (new_crypt->ops) 3431 new_crypt->priv = 3432 new_crypt->ops->init(param->u.crypt.idx); 3433 3434 if (new_crypt->priv == NULL) { 3435 kfree(new_crypt); 3436 param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED; 3437 ret = -EINVAL; 3438 goto done; 3439 } 3440 3441 *crypt = new_crypt; 3442 } 3443 3444 if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key && 3445 (*crypt)->ops->set_key(param->u.crypt.key, 3446 param->u.crypt.key_len, param->u.crypt.seq, 3447 (*crypt)->priv) < 0) { 3448 netdev_info(ieee->dev, "key setting failed\n"); 3449 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED; 3450 ret = -EINVAL; 3451 goto done; 3452 } 3453 3454 skip_host_crypt: 3455 if (param->u.crypt.set_tx) { 3456 ieee->crypt_info.tx_keyidx = param->u.crypt.idx; 3457 sec.active_key = param->u.crypt.idx; 3458 sec.flags |= SEC_ACTIVE_KEY; 3459 } else 3460 sec.flags &= ~SEC_ACTIVE_KEY; 3461 3462 if (param->u.crypt.alg != NULL) { 3463 memcpy(sec.keys[param->u.crypt.idx], 3464 param->u.crypt.key, 3465 param->u.crypt.key_len); 3466 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len; 3467 sec.flags |= (1 << param->u.crypt.idx); 3468 3469 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) { 3470 sec.flags |= SEC_LEVEL; 3471 sec.level = SEC_LEVEL_1; 3472 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) { 3473 sec.flags |= SEC_LEVEL; 3474 sec.level = SEC_LEVEL_2; 3475 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) { 3476 sec.flags |= SEC_LEVEL; 3477 sec.level = SEC_LEVEL_3; 3478 } 3479 } 3480 done: 3481 if (ieee->set_security) 3482 ieee->set_security(ieee->dev, &sec); 3483 3484 /* Do not reset port if card is in Managed mode since resetting will 3485 * generate new IEEE 802.11 authentication which may end up in looping 3486 * with IEEE 802.1X. If your hardware requires a reset after WEP 3487 * configuration (for example... Prism2), implement the reset_port in 3488 * the callbacks structures used to initialize the 802.11 stack. 3489 */ 3490 if (ieee->reset_on_keychange && 3491 ieee->iw_mode != IW_MODE_INFRA && 3492 ieee->reset_port && 3493 ieee->reset_port(ieee->dev)) { 3494 netdev_info(ieee->dev, "reset_port failed\n"); 3495 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED; 3496 return -EINVAL; 3497 } 3498 3499 return ret; 3500} 3501 3502inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon, 3503 struct rtllib_device *ieee, u16 asRsn) 3504{ 3505 struct sk_buff *skb; 3506 struct rtllib_disauth *disauth; 3507 int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom; 3508 3509 skb = dev_alloc_skb(len); 3510 if (!skb) 3511 return NULL; 3512 3513 skb_reserve(skb, ieee->tx_headroom); 3514 3515 disauth = (struct rtllib_disauth *) skb_put(skb, 3516 sizeof(struct rtllib_disauth)); 3517 disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH); 3518 disauth->header.duration_id = 0; 3519 3520 memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN); 3521 memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 3522 memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN); 3523 3524 disauth->reason = cpu_to_le16(asRsn); 3525 return skb; 3526} 3527 3528inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon, 3529 struct rtllib_device *ieee, u16 asRsn) 3530{ 3531 struct sk_buff *skb; 3532 struct rtllib_disassoc *disass; 3533 int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom; 3534 3535 skb = dev_alloc_skb(len); 3536 3537 if (!skb) 3538 return NULL; 3539 3540 skb_reserve(skb, ieee->tx_headroom); 3541 3542 disass = (struct rtllib_disassoc *) skb_put(skb, 3543 sizeof(struct rtllib_disassoc)); 3544 disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC); 3545 disass->header.duration_id = 0; 3546 3547 memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN); 3548 memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 3549 memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN); 3550 3551 disass->reason = cpu_to_le16(asRsn); 3552 return skb; 3553} 3554 3555void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn) 3556{ 3557 struct rtllib_network *beacon = &ieee->current_network; 3558 struct sk_buff *skb; 3559 3560 if (deauth) 3561 skb = rtllib_disauth_skb(beacon, ieee, asRsn); 3562 else 3563 skb = rtllib_disassociate_skb(beacon, ieee, asRsn); 3564 3565 if (skb) 3566 softmac_mgmt_xmit(skb, ieee); 3567} 3568 3569u8 rtllib_ap_sec_type(struct rtllib_device *ieee) 3570{ 3571 static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04}; 3572 static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04}; 3573 int wpa_ie_len = ieee->wpa_ie_len; 3574 struct lib80211_crypt_data *crypt; 3575 int encrypt; 3576 3577 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; 3578 encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY) 3579 || (ieee->host_encrypt && crypt && crypt->ops && 3580 (0 == strcmp(crypt->ops->name, "R-WEP"))); 3581 3582 /* simply judge */ 3583 if (encrypt && (wpa_ie_len == 0)) { 3584 return SEC_ALG_WEP; 3585 } else if ((wpa_ie_len != 0)) { 3586 if (((ieee->wpa_ie[0] == 0xdd) && 3587 (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) || 3588 ((ieee->wpa_ie[0] == 0x30) && 3589 (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4)))) 3590 return SEC_ALG_CCMP; 3591 else 3592 return SEC_ALG_TKIP; 3593 } else { 3594 return SEC_ALG_NONE; 3595 } 3596} 3597 3598int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p, 3599 u8 is_mesh) 3600{ 3601 struct ieee_param *param; 3602 int ret = 0; 3603 3604 down(&ieee->wx_sem); 3605 3606 if (p->length < sizeof(struct ieee_param) || !p->pointer) { 3607 ret = -EINVAL; 3608 goto out; 3609 } 3610 3611 param = memdup_user(p->pointer, p->length); 3612 if (IS_ERR(param)) { 3613 ret = PTR_ERR(param); 3614 goto out; 3615 } 3616 3617 switch (param->cmd) { 3618 case IEEE_CMD_SET_WPA_PARAM: 3619 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name, 3620 param->u.wpa_param.value); 3621 break; 3622 3623 case IEEE_CMD_SET_WPA_IE: 3624 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length); 3625 break; 3626 3627 case IEEE_CMD_SET_ENCRYPTION: 3628 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0); 3629 break; 3630 3631 case IEEE_CMD_MLME: 3632 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command, 3633 param->u.mlme.reason_code); 3634 break; 3635 3636 default: 3637 netdev_info(ieee->dev, "Unknown WPA supplicant request: %d\n", 3638 param->cmd); 3639 ret = -EOPNOTSUPP; 3640 break; 3641 } 3642 3643 if (ret == 0 && copy_to_user(p->pointer, param, p->length)) 3644 ret = -EFAULT; 3645 3646 kfree(param); 3647out: 3648 up(&ieee->wx_sem); 3649 3650 return ret; 3651} 3652EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl); 3653 3654static void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib) 3655{ 3656 u8 OpMode; 3657 u8 i; 3658 bool bFilterOutNonAssociatedBSSID = false; 3659 3660 rtllib->state = RTLLIB_NOLINK; 3661 3662 for (i = 0; i < 6; i++) 3663 rtllib->current_network.bssid[i] = 0x55; 3664 3665 rtllib->OpMode = RT_OP_MODE_NO_LINK; 3666 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID, 3667 rtllib->current_network.bssid); 3668 OpMode = RT_OP_MODE_NO_LINK; 3669 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode); 3670 rtllib_stop_send_beacons(rtllib); 3671 3672 bFilterOutNonAssociatedBSSID = false; 3673 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID, 3674 (u8 *)(&bFilterOutNonAssociatedBSSID)); 3675 notify_wx_assoc_event(rtllib); 3676 3677} 3678 3679static void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta, 3680 u8 asRsn) 3681{ 3682 u8 i; 3683 u8 OpMode; 3684 3685 RemovePeerTS(rtllib, asSta); 3686 3687 if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) { 3688 rtllib->state = RTLLIB_NOLINK; 3689 3690 for (i = 0; i < 6; i++) 3691 rtllib->current_network.bssid[i] = 0x22; 3692 OpMode = RT_OP_MODE_NO_LINK; 3693 rtllib->OpMode = RT_OP_MODE_NO_LINK; 3694 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, 3695 (u8 *)(&OpMode)); 3696 rtllib_disassociate(rtllib); 3697 3698 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID, 3699 rtllib->current_network.bssid); 3700 3701 } 3702 3703} 3704 3705static void 3706rtllib_MgntDisconnectAP( 3707 struct rtllib_device *rtllib, 3708 u8 asRsn 3709) 3710{ 3711 bool bFilterOutNonAssociatedBSSID = false; 3712 3713 bFilterOutNonAssociatedBSSID = false; 3714 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID, 3715 (u8 *)(&bFilterOutNonAssociatedBSSID)); 3716 rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid, 3717 asRsn); 3718 3719 rtllib->state = RTLLIB_NOLINK; 3720} 3721 3722bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn) 3723{ 3724 if (rtllib->ps != RTLLIB_PS_DISABLED) 3725 rtllib->sta_wake_up(rtllib->dev); 3726 3727 if (rtllib->state == RTLLIB_LINKED) { 3728 if (rtllib->iw_mode == IW_MODE_ADHOC) 3729 rtllib_MgntDisconnectIBSS(rtllib); 3730 if (rtllib->iw_mode == IW_MODE_INFRA) 3731 rtllib_MgntDisconnectAP(rtllib, asRsn); 3732 3733 } 3734 3735 return true; 3736} 3737EXPORT_SYMBOL(rtllib_MgntDisconnect); 3738 3739void notify_wx_assoc_event(struct rtllib_device *ieee) 3740{ 3741 union iwreq_data wrqu; 3742 3743 if (ieee->cannot_notify) 3744 return; 3745 3746 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 3747 if (ieee->state == RTLLIB_LINKED) 3748 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid, 3749 ETH_ALEN); 3750 else { 3751 3752 netdev_info(ieee->dev, "%s(): Tell user space disconnected\n", 3753 __func__); 3754 eth_zero_addr(wrqu.ap_addr.sa_data); 3755 } 3756 wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL); 3757} 3758EXPORT_SYMBOL(notify_wx_assoc_event); 3759