1 // SPDX-License-Identifier: GPL-2.0 2 /* IEEE 802.11 SoftMAC layer 3 * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com> 4 * 5 * Mostly extracted from the rtl8180-sa2400 driver for the 6 * in-kernel generic ieee802.11 stack. 7 * 8 * Few lines might be stolen from other part of the ieee80211 9 * stack. Copyright who own it's copyright 10 * 11 * WPA code stolen from the ipw2200 driver. 12 * Copyright who own it's copyright. 13 */ 14 #include "ieee80211.h" 15 16 #include <linux/random.h> 17 #include <linux/delay.h> 18 #include <linux/slab.h> 19 #include <linux/uaccess.h> 20 #include <linux/etherdevice.h> 21 22 #include "dot11d.h" 23 24 short ieee80211_is_54g(const struct ieee80211_network *net) 25 { 26 return (net->rates_ex_len > 0) || (net->rates_len > 4); 27 } 28 EXPORT_SYMBOL(ieee80211_is_54g); 29 30 short ieee80211_is_shortslot(const struct ieee80211_network *net) 31 { 32 return net->capability & WLAN_CAPABILITY_SHORT_SLOT; 33 } 34 EXPORT_SYMBOL(ieee80211_is_shortslot); 35 36 /* returns the total length needed for placing the RATE MFIE 37 * tag and the EXTENDED RATE MFIE tag if needed. 38 * It includes two bytes per tag for the tag itself and its len 39 */ 40 static unsigned int ieee80211_MFIE_rate_len(struct ieee80211_device *ieee) 41 { 42 unsigned int rate_len = 0; 43 44 if (ieee->modulation & IEEE80211_CCK_MODULATION) 45 rate_len = IEEE80211_CCK_RATE_LEN + 2; 46 47 if (ieee->modulation & IEEE80211_OFDM_MODULATION) 48 rate_len += IEEE80211_OFDM_RATE_LEN + 2; 49 50 return rate_len; 51 } 52 53 /* place the MFIE rate, tag to the memory (double) pointer. 54 * Then it updates the pointer so that 55 * it points after the new MFIE tag added. 56 */ 57 static void ieee80211_MFIE_Brate(struct ieee80211_device *ieee, u8 **tag_p) 58 { 59 u8 *tag = *tag_p; 60 61 if (ieee->modulation & IEEE80211_CCK_MODULATION) { 62 *tag++ = MFIE_TYPE_RATES; 63 *tag++ = 4; 64 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB; 65 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB; 66 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB; 67 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB; 68 } 69 70 /* We may add an option for custom rates that specific HW might support */ 71 *tag_p = tag; 72 } 73 74 static void ieee80211_MFIE_Grate(struct ieee80211_device *ieee, u8 **tag_p) 75 { 76 u8 *tag = *tag_p; 77 78 if (ieee->modulation & IEEE80211_OFDM_MODULATION) { 79 *tag++ = MFIE_TYPE_RATES_EX; 80 *tag++ = 8; 81 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_6MB; 82 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_9MB; 83 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_12MB; 84 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_18MB; 85 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB; 86 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_36MB; 87 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_48MB; 88 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_54MB; 89 } 90 91 /* We may add an option for custom rates that specific HW might support */ 92 *tag_p = tag; 93 } 94 95 static void ieee80211_WMM_Info(struct ieee80211_device *ieee, u8 **tag_p) 96 { 97 u8 *tag = *tag_p; 98 99 *tag++ = MFIE_TYPE_GENERIC; /* 0 */ 100 *tag++ = 7; 101 *tag++ = 0x00; 102 *tag++ = 0x50; 103 *tag++ = 0xf2; 104 *tag++ = 0x02; /* 5 */ 105 *tag++ = 0x00; 106 *tag++ = 0x01; 107 #ifdef SUPPORT_USPD 108 if (ieee->current_network.wmm_info & 0x80) 109 *tag++ = 0x0f | MAX_SP_Len; 110 else 111 *tag++ = MAX_SP_Len; 112 #else 113 *tag++ = MAX_SP_Len; 114 #endif 115 *tag_p = tag; 116 } 117 118 #ifdef THOMAS_TURBO 119 static void ieee80211_TURBO_Info(struct ieee80211_device *ieee, u8 **tag_p) 120 { 121 u8 *tag = *tag_p; 122 123 *tag++ = MFIE_TYPE_GENERIC; /* 0 */ 124 *tag++ = 7; 125 *tag++ = 0x00; 126 *tag++ = 0xe0; 127 *tag++ = 0x4c; 128 *tag++ = 0x01; /* 5 */ 129 *tag++ = 0x02; 130 *tag++ = 0x11; 131 *tag++ = 0x00; 132 133 *tag_p = tag; 134 netdev_alert(ieee->dev, "This is enable turbo mode IE process\n"); 135 } 136 #endif 137 138 static void enqueue_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb) 139 { 140 int nh; 141 142 nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM; 143 144 /* 145 * if the queue is full but we have newer frames then 146 * just overwrites the oldest. 147 * 148 * if (nh == ieee->mgmt_queue_tail) 149 * return -1; 150 */ 151 ieee->mgmt_queue_head = nh; 152 ieee->mgmt_queue_ring[nh] = skb; 153 154 //return 0; 155 } 156 157 static struct sk_buff *dequeue_mgmt(struct ieee80211_device *ieee) 158 { 159 struct sk_buff *ret; 160 161 if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head) 162 return NULL; 163 164 ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail]; 165 166 ieee->mgmt_queue_tail = 167 (ieee->mgmt_queue_tail + 1) % MGMT_QUEUE_NUM; 168 169 return ret; 170 } 171 172 static void init_mgmt_queue(struct ieee80211_device *ieee) 173 { 174 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0; 175 } 176 177 static u8 MgntQuery_MgntFrameTxRate(struct ieee80211_device *ieee) 178 { 179 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; 180 u8 rate; 181 182 /* 2008/01/25 MH For broadcom, MGNT frame set as OFDM 6M. */ 183 if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M) 184 rate = 0x0c; 185 else 186 rate = ieee->basic_rate & 0x7f; 187 188 if (rate == 0) { 189 /* 2005.01.26, by rcnjko. */ 190 if (ieee->mode == IEEE_A || 191 ieee->mode == IEEE_N_5G || 192 (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK)) 193 rate = 0x0c; 194 else 195 rate = 0x02; 196 } 197 198 /* 199 // Data rate of ProbeReq is already decided. Annie, 2005-03-31 200 if( pMgntInfo->bScanInProgress || (pMgntInfo->bDualModeScanStep!=0) ) { 201 if(pMgntInfo->dot11CurrentWirelessMode==WIRELESS_MODE_A) 202 rate = 0x0c; 203 else 204 rate = 0x02; 205 } 206 */ 207 return rate; 208 } 209 210 void ieee80211_sta_wakeup(struct ieee80211_device *ieee, short nl); 211 212 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct ieee80211_device *ieee) 213 { 214 unsigned long flags; 215 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE; 216 struct rtl_80211_hdr_3addr *header = 217 (struct rtl_80211_hdr_3addr *)skb->data; 218 219 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); 220 221 spin_lock_irqsave(&ieee->lock, flags); 222 223 /* called with 2nd param 0, no mgmt lock required */ 224 ieee80211_sta_wakeup(ieee, 0); 225 226 tcb_desc->queue_index = MGNT_QUEUE; 227 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee); 228 tcb_desc->RATRIndex = 7; 229 tcb_desc->bTxDisableRateFallBack = 1; 230 tcb_desc->bTxUseDriverAssingedRate = 1; 231 232 if (single) { 233 if (ieee->queue_stop) { 234 enqueue_mgmt(ieee, skb); 235 } else { 236 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 237 238 if (ieee->seq_ctrl[0] == 0xFFF) 239 ieee->seq_ctrl[0] = 0; 240 else 241 ieee->seq_ctrl[0]++; 242 243 /* avoid watchdog triggers */ 244 netif_trans_update(ieee->dev); 245 ieee->softmac_data_hard_start_xmit(skb, ieee->dev, ieee->basic_rate); 246 //dev_kfree_skb_any(skb);//edit by thomas 247 } 248 249 spin_unlock_irqrestore(&ieee->lock, flags); 250 } else { 251 spin_unlock_irqrestore(&ieee->lock, flags); 252 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags); 253 254 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 255 256 if (ieee->seq_ctrl[0] == 0xFFF) 257 ieee->seq_ctrl[0] = 0; 258 else 259 ieee->seq_ctrl[0]++; 260 261 /* check whether the managed packet queued greater than 5 */ 262 if (!ieee->check_nic_enough_desc(ieee->dev, tcb_desc->queue_index) || \ 263 (skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) != 0) || \ 264 (ieee->queue_stop)) { 265 /* insert the skb packet to the management queue */ 266 /* as for the completion function, it does not need 267 * to check it any more. 268 * */ 269 printk("%s():insert to waitqueue!\n", __func__); 270 skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index], skb); 271 } else { 272 ieee->softmac_hard_start_xmit(skb, ieee->dev); 273 //dev_kfree_skb_any(skb);//edit by thomas 274 } 275 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags); 276 } 277 } 278 279 static inline void 280 softmac_ps_mgmt_xmit(struct sk_buff *skb, struct ieee80211_device *ieee) 281 { 282 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE; 283 struct rtl_80211_hdr_3addr *header = 284 (struct rtl_80211_hdr_3addr *)skb->data; 285 286 if (single) { 287 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 288 289 if (ieee->seq_ctrl[0] == 0xFFF) 290 ieee->seq_ctrl[0] = 0; 291 else 292 ieee->seq_ctrl[0]++; 293 294 /* avoid watchdog triggers */ 295 netif_trans_update(ieee->dev); 296 ieee->softmac_data_hard_start_xmit(skb, ieee->dev, ieee->basic_rate); 297 } else { 298 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 299 300 if (ieee->seq_ctrl[0] == 0xFFF) 301 ieee->seq_ctrl[0] = 0; 302 else 303 ieee->seq_ctrl[0]++; 304 305 ieee->softmac_hard_start_xmit(skb, ieee->dev); 306 } 307 //dev_kfree_skb_any(skb);//edit by thomas 308 } 309 310 static inline struct sk_buff *ieee80211_probe_req(struct ieee80211_device *ieee) 311 { 312 unsigned int len, rate_len; 313 u8 *tag; 314 struct sk_buff *skb; 315 struct ieee80211_probe_request *req; 316 317 len = ieee->current_network.ssid_len; 318 319 rate_len = ieee80211_MFIE_rate_len(ieee); 320 321 skb = dev_alloc_skb(sizeof(struct ieee80211_probe_request) + 322 2 + len + rate_len + ieee->tx_headroom); 323 if (!skb) 324 return NULL; 325 326 skb_reserve(skb, ieee->tx_headroom); 327 328 req = skb_put(skb, sizeof(struct ieee80211_probe_request)); 329 req->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 330 req->header.duration_id = 0; /* FIXME: is this OK? */ 331 332 eth_broadcast_addr(req->header.addr1); 333 memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 334 eth_broadcast_addr(req->header.addr3); 335 336 tag = skb_put(skb, len + 2 + rate_len); 337 338 *tag++ = MFIE_TYPE_SSID; 339 *tag++ = len; 340 memcpy(tag, ieee->current_network.ssid, len); 341 tag += len; 342 343 ieee80211_MFIE_Brate(ieee, &tag); 344 ieee80211_MFIE_Grate(ieee, &tag); 345 return skb; 346 } 347 348 struct sk_buff *ieee80211_get_beacon_(struct ieee80211_device *ieee); 349 350 static void ieee80211_send_beacon(struct ieee80211_device *ieee) 351 { 352 struct sk_buff *skb; 353 354 if (!ieee->ieee_up) 355 return; 356 //unsigned long flags; 357 skb = ieee80211_get_beacon_(ieee); 358 359 if (skb) { 360 softmac_mgmt_xmit(skb, ieee); 361 ieee->softmac_stats.tx_beacons++; 362 //dev_kfree_skb_any(skb);//edit by thomas 363 } 364 // ieee->beacon_timer.expires = jiffies + 365 // (MSECS( ieee->current_network.beacon_interval -5)); 366 367 //spin_lock_irqsave(&ieee->beacon_lock,flags); 368 if (ieee->beacon_txing && ieee->ieee_up) { 369 // if(!timer_pending(&ieee->beacon_timer)) 370 // add_timer(&ieee->beacon_timer); 371 mod_timer(&ieee->beacon_timer, 372 jiffies + msecs_to_jiffies(ieee->current_network.beacon_interval - 5)); 373 } 374 //spin_unlock_irqrestore(&ieee->beacon_lock,flags); 375 } 376 377 static void ieee80211_send_beacon_cb(struct timer_list *t) 378 { 379 struct ieee80211_device *ieee = 380 from_timer(ieee, t, beacon_timer); 381 unsigned long flags; 382 383 spin_lock_irqsave(&ieee->beacon_lock, flags); 384 ieee80211_send_beacon(ieee); 385 spin_unlock_irqrestore(&ieee->beacon_lock, flags); 386 } 387 388 static void ieee80211_send_probe(struct ieee80211_device *ieee) 389 { 390 struct sk_buff *skb; 391 392 skb = ieee80211_probe_req(ieee); 393 if (skb) { 394 softmac_mgmt_xmit(skb, ieee); 395 ieee->softmac_stats.tx_probe_rq++; 396 //dev_kfree_skb_any(skb);//edit by thomas 397 } 398 } 399 400 static void ieee80211_send_probe_requests(struct ieee80211_device *ieee) 401 { 402 if (ieee->active_scan && (ieee->softmac_features & IEEE_SOFTMAC_PROBERQ)) { 403 ieee80211_send_probe(ieee); 404 ieee80211_send_probe(ieee); 405 } 406 } 407 408 /* this performs syncro scan blocking the caller until all channels 409 * in the allowed channel map has been checked. 410 */ 411 void ieee80211_softmac_scan_syncro(struct ieee80211_device *ieee) 412 { 413 short ch = 0; 414 u8 channel_map[MAX_CHANNEL_NUMBER + 1]; 415 416 memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER + 1); 417 mutex_lock(&ieee->scan_mutex); 418 419 while (1) { 420 do { 421 ch++; 422 if (ch > MAX_CHANNEL_NUMBER) 423 goto out; /* scan completed */ 424 } while (!channel_map[ch]); 425 426 /* this function can be called in two situations 427 * 1- We have switched to ad-hoc mode and we are 428 * performing a complete syncro scan before conclude 429 * there are no interesting cell and to create a 430 * new one. In this case the link state is 431 * IEEE80211_NOLINK until we found an interesting cell. 432 * If so the ieee8021_new_net, called by the RX path 433 * will set the state to IEEE80211_LINKED, so we stop 434 * scanning 435 * 2- We are linked and the root uses run iwlist scan. 436 * So we switch to IEEE80211_LINKED_SCANNING to remember 437 * that we are still logically linked (not interested in 438 * new network events, despite for updating the net list, 439 * but we are temporarily 'unlinked' as the driver shall 440 * not filter RX frames and the channel is changing. 441 * So the only situation in witch are interested is to check 442 * if the state become LINKED because of the #1 situation 443 */ 444 445 if (ieee->state == IEEE80211_LINKED) 446 goto out; 447 ieee->set_chan(ieee->dev, ch); 448 if (channel_map[ch] == 1) 449 ieee80211_send_probe_requests(ieee); 450 451 /* this prevent excessive time wait when we 452 * need to wait for a syncro scan to end.. 453 */ 454 if (ieee->state >= IEEE80211_LINKED && ieee->sync_scan_hurryup) 455 goto out; 456 457 msleep_interruptible(IEEE80211_SOFTMAC_SCAN_TIME); 458 } 459 out: 460 if (ieee->state < IEEE80211_LINKED) { 461 ieee->actscanning = false; 462 mutex_unlock(&ieee->scan_mutex); 463 } else { 464 ieee->sync_scan_hurryup = 0; 465 if (IS_DOT11D_ENABLE(ieee)) 466 dot11d_scan_complete(ieee); 467 mutex_unlock(&ieee->scan_mutex); 468 } 469 } 470 EXPORT_SYMBOL(ieee80211_softmac_scan_syncro); 471 472 static void ieee80211_softmac_scan_wq(struct work_struct *work) 473 { 474 struct delayed_work *dwork = to_delayed_work(work); 475 struct ieee80211_device *ieee = container_of(dwork, struct ieee80211_device, softmac_scan_wq); 476 static short watchdog; 477 u8 channel_map[MAX_CHANNEL_NUMBER + 1]; 478 479 memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER + 1); 480 if (!ieee->ieee_up) 481 return; 482 mutex_lock(&ieee->scan_mutex); 483 do { 484 ieee->current_network.channel = 485 (ieee->current_network.channel + 1) % MAX_CHANNEL_NUMBER; 486 if (watchdog++ > MAX_CHANNEL_NUMBER) { 487 //if current channel is not in channel map, set to default channel. 488 if (!channel_map[ieee->current_network.channel]) { 489 ieee->current_network.channel = 6; 490 goto out; /* no good chans */ 491 } 492 } 493 } while (!channel_map[ieee->current_network.channel]); 494 if (ieee->scanning == 0) 495 goto out; 496 ieee->set_chan(ieee->dev, ieee->current_network.channel); 497 if (channel_map[ieee->current_network.channel] == 1) 498 ieee80211_send_probe_requests(ieee); 499 500 schedule_delayed_work(&ieee->softmac_scan_wq, IEEE80211_SOFTMAC_SCAN_TIME); 501 502 mutex_unlock(&ieee->scan_mutex); 503 return; 504 out: 505 if (IS_DOT11D_ENABLE(ieee)) 506 dot11d_scan_complete(ieee); 507 ieee->actscanning = false; 508 watchdog = 0; 509 ieee->scanning = 0; 510 mutex_unlock(&ieee->scan_mutex); 511 } 512 513 static void ieee80211_beacons_start(struct ieee80211_device *ieee) 514 { 515 unsigned long flags; 516 spin_lock_irqsave(&ieee->beacon_lock, flags); 517 518 ieee->beacon_txing = 1; 519 ieee80211_send_beacon(ieee); 520 521 spin_unlock_irqrestore(&ieee->beacon_lock, flags); 522 } 523 524 static void ieee80211_beacons_stop(struct ieee80211_device *ieee) 525 { 526 unsigned long flags; 527 528 spin_lock_irqsave(&ieee->beacon_lock, flags); 529 530 ieee->beacon_txing = 0; 531 del_timer_sync(&ieee->beacon_timer); 532 533 spin_unlock_irqrestore(&ieee->beacon_lock, flags); 534 } 535 536 void ieee80211_stop_send_beacons(struct ieee80211_device *ieee) 537 { 538 if (ieee->stop_send_beacons) 539 ieee->stop_send_beacons(ieee->dev); 540 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS) 541 ieee80211_beacons_stop(ieee); 542 } 543 EXPORT_SYMBOL(ieee80211_stop_send_beacons); 544 545 void ieee80211_start_send_beacons(struct ieee80211_device *ieee) 546 { 547 if (ieee->start_send_beacons) 548 ieee->start_send_beacons(ieee->dev, ieee->basic_rate); 549 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS) 550 ieee80211_beacons_start(ieee); 551 } 552 EXPORT_SYMBOL(ieee80211_start_send_beacons); 553 554 static void ieee80211_softmac_stop_scan(struct ieee80211_device *ieee) 555 { 556 // unsigned long flags; 557 558 //ieee->sync_scan_hurryup = 1; 559 560 mutex_lock(&ieee->scan_mutex); 561 // spin_lock_irqsave(&ieee->lock, flags); 562 563 if (ieee->scanning == 1) { 564 ieee->scanning = 0; 565 566 cancel_delayed_work(&ieee->softmac_scan_wq); 567 } 568 569 // spin_unlock_irqrestore(&ieee->lock, flags); 570 mutex_unlock(&ieee->scan_mutex); 571 } 572 573 void ieee80211_stop_scan(struct ieee80211_device *ieee) 574 { 575 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) 576 ieee80211_softmac_stop_scan(ieee); 577 else 578 ieee->stop_scan(ieee->dev); 579 } 580 EXPORT_SYMBOL(ieee80211_stop_scan); 581 582 /* called with ieee->lock held */ 583 static void ieee80211_start_scan(struct ieee80211_device *ieee) 584 { 585 if (IS_DOT11D_ENABLE(ieee)) { 586 if (IS_COUNTRY_IE_VALID(ieee)) 587 RESET_CIE_WATCHDOG(ieee); 588 } 589 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { 590 if (ieee->scanning == 0) { 591 ieee->scanning = 1; 592 schedule_delayed_work(&ieee->softmac_scan_wq, 0); 593 } 594 } else { 595 ieee->start_scan(ieee->dev); 596 } 597 } 598 599 /* called with wx_mutex held */ 600 void ieee80211_start_scan_syncro(struct ieee80211_device *ieee) 601 { 602 if (IS_DOT11D_ENABLE(ieee)) { 603 if (IS_COUNTRY_IE_VALID(ieee)) 604 RESET_CIE_WATCHDOG(ieee); 605 } 606 ieee->sync_scan_hurryup = 0; 607 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) 608 ieee80211_softmac_scan_syncro(ieee); 609 else 610 ieee->scan_syncro(ieee->dev); 611 } 612 EXPORT_SYMBOL(ieee80211_start_scan_syncro); 613 614 static inline struct sk_buff * 615 ieee80211_authentication_req(struct ieee80211_network *beacon, 616 struct ieee80211_device *ieee, int challengelen) 617 { 618 struct sk_buff *skb; 619 struct ieee80211_authentication *auth; 620 int len = sizeof(struct ieee80211_authentication) + challengelen + ieee->tx_headroom; 621 622 skb = dev_alloc_skb(len); 623 if (!skb) 624 return NULL; 625 626 skb_reserve(skb, ieee->tx_headroom); 627 auth = skb_put(skb, sizeof(struct ieee80211_authentication)); 628 629 if (challengelen) 630 auth->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_AUTH 631 | IEEE80211_FCTL_WEP); 632 else 633 auth->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_AUTH); 634 635 auth->header.duration_id = cpu_to_le16(0x013a); 636 637 memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN); 638 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 639 memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN); 640 641 //auth->algorithm = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY; 642 if (ieee->auth_mode == 0) 643 auth->algorithm = WLAN_AUTH_OPEN; 644 else if (ieee->auth_mode == 1) 645 auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY); 646 else if (ieee->auth_mode == 2) 647 auth->algorithm = WLAN_AUTH_OPEN; /* 0x80; */ 648 printk("=================>%s():auth->algorithm is %d\n", __func__, auth->algorithm); 649 auth->transaction = cpu_to_le16(ieee->associate_seq); 650 ieee->associate_seq++; 651 652 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS); 653 654 return skb; 655 } 656 657 static struct sk_buff *ieee80211_probe_resp(struct ieee80211_device *ieee, u8 *dest) 658 { 659 u8 *tag; 660 int beacon_size; 661 struct ieee80211_probe_response *beacon_buf; 662 struct sk_buff *skb = NULL; 663 int encrypt; 664 int atim_len, erp_len; 665 struct ieee80211_crypt_data *crypt; 666 667 char *ssid = ieee->current_network.ssid; 668 int ssid_len = ieee->current_network.ssid_len; 669 int rate_len = ieee->current_network.rates_len + 2; 670 int rate_ex_len = ieee->current_network.rates_ex_len; 671 int wpa_ie_len = ieee->wpa_ie_len; 672 u8 erpinfo_content = 0; 673 674 u8 *tmp_ht_cap_buf; 675 u8 tmp_ht_cap_len = 0; 676 u8 *tmp_ht_info_buf; 677 u8 tmp_ht_info_len = 0; 678 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; 679 u8 *tmp_generic_ie_buf = NULL; 680 u8 tmp_generic_ie_len = 0; 681 682 if (rate_ex_len > 0) 683 rate_ex_len += 2; 684 685 if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS) 686 atim_len = 4; 687 else 688 atim_len = 0; 689 690 if (ieee80211_is_54g(&ieee->current_network)) 691 erp_len = 3; 692 else 693 erp_len = 0; 694 695 crypt = ieee->crypt[ieee->tx_keyidx]; 696 697 encrypt = ieee->host_encrypt && crypt && crypt->ops && 698 ((0 == strcmp(crypt->ops->name, "WEP") || wpa_ie_len)); 699 /* HT ralated element */ 700 tmp_ht_cap_buf = (u8 *)&ieee->pHTInfo->SelfHTCap; 701 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); 702 tmp_ht_info_buf = (u8 *)&ieee->pHTInfo->SelfHTInfo; 703 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo); 704 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf, &tmp_ht_cap_len, encrypt); 705 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len, encrypt); 706 707 if (pHTInfo->bRegRT2RTAggregation) { 708 tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; 709 tmp_generic_ie_len = sizeof(ieee->pHTInfo->szRT2RTAggBuffer); 710 HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf, &tmp_generic_ie_len); 711 } 712 // printk("===============>tmp_ht_cap_len is %d,tmp_ht_info_len is %d, tmp_generic_ie_len is %d\n",tmp_ht_cap_len,tmp_ht_info_len,tmp_generic_ie_len); 713 beacon_size = sizeof(struct ieee80211_probe_response) + 2 714 + ssid_len 715 + 3 //channel 716 + rate_len 717 + rate_ex_len 718 + atim_len 719 + erp_len 720 + wpa_ie_len 721 // + tmp_ht_cap_len 722 // + tmp_ht_info_len 723 // + tmp_generic_ie_len 724 // + wmm_len+2 725 + ieee->tx_headroom; 726 skb = dev_alloc_skb(beacon_size); 727 if (!skb) 728 return NULL; 729 skb_reserve(skb, ieee->tx_headroom); 730 beacon_buf = skb_put(skb, (beacon_size - ieee->tx_headroom)); 731 memcpy(beacon_buf->header.addr1, dest, ETH_ALEN); 732 memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 733 memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN); 734 735 beacon_buf->header.duration_id = 0; /* FIXME */ 736 beacon_buf->beacon_interval = 737 cpu_to_le16(ieee->current_network.beacon_interval); 738 beacon_buf->capability = 739 cpu_to_le16(ieee->current_network.capability & WLAN_CAPABILITY_IBSS); 740 beacon_buf->capability |= 741 cpu_to_le16(ieee->current_network.capability & WLAN_CAPABILITY_SHORT_PREAMBLE); /* add short preamble here */ 742 743 if (ieee->short_slot && (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_SLOT)) 744 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT); 745 746 if (encrypt) 747 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 748 749 beacon_buf->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_RESP); 750 beacon_buf->info_element[0].id = MFIE_TYPE_SSID; 751 beacon_buf->info_element[0].len = ssid_len; 752 753 tag = (u8 *)beacon_buf->info_element[0].data; 754 755 memcpy(tag, ssid, ssid_len); 756 757 tag += ssid_len; 758 759 *(tag++) = MFIE_TYPE_RATES; 760 *(tag++) = rate_len - 2; 761 memcpy(tag, ieee->current_network.rates, rate_len - 2); 762 tag += rate_len - 2; 763 764 *(tag++) = MFIE_TYPE_DS_SET; 765 *(tag++) = 1; 766 *(tag++) = ieee->current_network.channel; 767 768 if (atim_len) { 769 *(tag++) = MFIE_TYPE_IBSS_SET; 770 *(tag++) = 2; 771 772 put_unaligned_le16(ieee->current_network.atim_window, 773 tag); 774 tag += 2; 775 } 776 777 if (erp_len) { 778 *(tag++) = MFIE_TYPE_ERP; 779 *(tag++) = 1; 780 *(tag++) = erpinfo_content; 781 } 782 if (rate_ex_len) { 783 *(tag++) = MFIE_TYPE_RATES_EX; 784 *(tag++) = rate_ex_len - 2; 785 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len - 2); 786 tag += rate_ex_len - 2; 787 } 788 789 if (wpa_ie_len) { 790 if (ieee->iw_mode == IW_MODE_ADHOC) { 791 //as Windows will set pairwise key same as the group key which is not allowed in Linux, so set this for IOT issue. WB 2008.07.07 792 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4); 793 } 794 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len); 795 tag += wpa_ie_len; 796 } 797 798 //skb->dev = ieee->dev; 799 return skb; 800 } 801 802 static struct sk_buff *ieee80211_assoc_resp(struct ieee80211_device *ieee, 803 u8 *dest) 804 { 805 struct sk_buff *skb; 806 u8 *tag; 807 808 struct ieee80211_crypt_data *crypt; 809 struct ieee80211_assoc_response_frame *assoc; 810 short encrypt; 811 812 unsigned int rate_len = ieee80211_MFIE_rate_len(ieee); 813 int len = sizeof(struct ieee80211_assoc_response_frame) + rate_len + ieee->tx_headroom; 814 815 skb = dev_alloc_skb(len); 816 817 if (!skb) 818 return NULL; 819 820 skb_reserve(skb, ieee->tx_headroom); 821 822 assoc = skb_put(skb, sizeof(struct ieee80211_assoc_response_frame)); 823 824 assoc->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP); 825 memcpy(assoc->header.addr1, dest, ETH_ALEN); 826 memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN); 827 memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 828 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ? 829 WLAN_CAPABILITY_BSS : WLAN_CAPABILITY_IBSS); 830 831 if (ieee->short_slot) 832 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT); 833 834 if (ieee->host_encrypt) 835 crypt = ieee->crypt[ieee->tx_keyidx]; 836 else 837 crypt = NULL; 838 839 encrypt = crypt && crypt->ops; 840 841 if (encrypt) 842 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 843 844 assoc->status = 0; 845 assoc->aid = cpu_to_le16(ieee->assoc_id); 846 if (ieee->assoc_id == 0x2007) 847 ieee->assoc_id = 0; 848 else 849 ieee->assoc_id++; 850 851 tag = skb_put(skb, rate_len); 852 853 ieee80211_MFIE_Brate(ieee, &tag); 854 ieee80211_MFIE_Grate(ieee, &tag); 855 856 return skb; 857 } 858 859 static struct sk_buff *ieee80211_auth_resp(struct ieee80211_device *ieee, 860 int status, u8 *dest) 861 { 862 struct sk_buff *skb; 863 struct ieee80211_authentication *auth; 864 int len = ieee->tx_headroom + sizeof(struct ieee80211_authentication) + 1; 865 866 skb = dev_alloc_skb(len); 867 868 if (!skb) 869 return NULL; 870 871 skb->len = sizeof(struct ieee80211_authentication); 872 873 auth = (struct ieee80211_authentication *)skb->data; 874 875 auth->status = cpu_to_le16(status); 876 auth->transaction = cpu_to_le16(2); 877 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN); 878 879 memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN); 880 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 881 memcpy(auth->header.addr1, dest, ETH_ALEN); 882 auth->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_AUTH); 883 return skb; 884 } 885 886 static struct sk_buff *ieee80211_null_func(struct ieee80211_device *ieee, 887 short pwr) 888 { 889 struct sk_buff *skb; 890 struct rtl_80211_hdr_3addr *hdr; 891 892 skb = dev_alloc_skb(sizeof(struct rtl_80211_hdr_3addr)); 893 894 if (!skb) 895 return NULL; 896 897 hdr = skb_put(skb, sizeof(struct rtl_80211_hdr_3addr)); 898 899 memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN); 900 memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN); 901 memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN); 902 903 hdr->frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA | 904 IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_TODS | 905 (pwr ? IEEE80211_FCTL_PM : 0)); 906 907 return skb; 908 } 909 910 static void ieee80211_resp_to_assoc_rq(struct ieee80211_device *ieee, u8 *dest) 911 { 912 struct sk_buff *buf = ieee80211_assoc_resp(ieee, dest); 913 914 if (buf) 915 softmac_mgmt_xmit(buf, ieee); 916 } 917 918 static void ieee80211_resp_to_auth(struct ieee80211_device *ieee, int s, 919 u8 *dest) 920 { 921 struct sk_buff *buf = ieee80211_auth_resp(ieee, s, dest); 922 923 if (buf) 924 softmac_mgmt_xmit(buf, ieee); 925 } 926 927 static void ieee80211_resp_to_probe(struct ieee80211_device *ieee, u8 *dest) 928 { 929 struct sk_buff *buf = ieee80211_probe_resp(ieee, dest); 930 if (buf) 931 softmac_mgmt_xmit(buf, ieee); 932 } 933 934 static inline struct sk_buff * 935 ieee80211_association_req(struct ieee80211_network *beacon, 936 struct ieee80211_device *ieee) 937 { 938 struct sk_buff *skb; 939 //unsigned long flags; 940 941 struct ieee80211_assoc_request_frame *hdr; 942 u8 *tag;//,*rsn_ie; 943 //short info_addr = 0; 944 //int i; 945 //u16 suite_count = 0; 946 //u8 suit_select = 0; 947 //unsigned int wpa_len = beacon->wpa_ie_len; 948 //for HT 949 u8 *ht_cap_buf = NULL; 950 u8 ht_cap_len = 0; 951 u8 *realtek_ie_buf = NULL; 952 u8 realtek_ie_len = 0; 953 int wpa_ie_len = ieee->wpa_ie_len; 954 unsigned int ckip_ie_len = 0; 955 unsigned int ccxrm_ie_len = 0; 956 unsigned int cxvernum_ie_len = 0; 957 struct ieee80211_crypt_data *crypt; 958 int encrypt; 959 960 unsigned int rate_len = ieee80211_MFIE_rate_len(ieee); 961 unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0; 962 #ifdef THOMAS_TURBO 963 unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0; 964 #endif 965 966 int len = 0; 967 968 crypt = ieee->crypt[ieee->tx_keyidx]; 969 encrypt = ieee->host_encrypt && crypt && crypt->ops && ((0 == strcmp(crypt->ops->name, "WEP") || wpa_ie_len)); 970 971 /* Include High Throuput capability && Realtek proprietary */ 972 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 973 ht_cap_buf = (u8 *)&ieee->pHTInfo->SelfHTCap; 974 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); 975 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len, encrypt); 976 if (ieee->pHTInfo->bCurrentRT2RTAggregation) { 977 realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; 978 realtek_ie_len = sizeof(ieee->pHTInfo->szRT2RTAggBuffer); 979 HTConstructRT2RTAggElement(ieee, realtek_ie_buf, &realtek_ie_len); 980 } 981 } 982 if (ieee->qos_support) 983 wmm_info_len = beacon->qos_data.supported ? 9 : 0; 984 985 if (beacon->bCkipSupported) 986 ckip_ie_len = 30 + 2; 987 988 if (beacon->bCcxRmEnable) 989 ccxrm_ie_len = 6 + 2; 990 991 if (beacon->BssCcxVerNumber >= 2) 992 cxvernum_ie_len = 5 + 2; 993 994 #ifdef THOMAS_TURBO 995 len = sizeof(struct ieee80211_assoc_request_frame) + 2 996 + beacon->ssid_len /* essid tagged val */ 997 + rate_len /* rates tagged val */ 998 + wpa_ie_len 999 + wmm_info_len 1000 + turbo_info_len 1001 + ht_cap_len 1002 + realtek_ie_len 1003 + ckip_ie_len 1004 + ccxrm_ie_len 1005 + cxvernum_ie_len 1006 + ieee->tx_headroom; 1007 #else 1008 len = sizeof(struct ieee80211_assoc_request_frame) + 2 1009 + beacon->ssid_len /* essid tagged val */ 1010 + rate_len /* rates tagged val */ 1011 + wpa_ie_len 1012 + wmm_info_len 1013 + ht_cap_len 1014 + realtek_ie_len 1015 + ckip_ie_len 1016 + ccxrm_ie_len 1017 + cxvernum_ie_len 1018 + ieee->tx_headroom; 1019 #endif 1020 skb = dev_alloc_skb(len); 1021 1022 if (!skb) 1023 return NULL; 1024 1025 skb_reserve(skb, ieee->tx_headroom); 1026 1027 hdr = skb_put(skb, sizeof(struct ieee80211_assoc_request_frame) + 2); 1028 1029 hdr->header.frame_ctl = IEEE80211_STYPE_ASSOC_REQ; 1030 hdr->header.duration_id = cpu_to_le16(37); 1031 memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN); 1032 memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 1033 memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN); 1034 1035 memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);//for HW security, John 1036 1037 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_BSS); 1038 if (beacon->capability & WLAN_CAPABILITY_PRIVACY) 1039 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 1040 1041 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) 1042 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE); //add short_preamble here 1043 1044 if (ieee->short_slot) 1045 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT); 1046 if (wmm_info_len) //QOS 1047 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_QOS); 1048 1049 hdr->listen_interval = cpu_to_le16(0xa); 1050 1051 hdr->info_element[0].id = MFIE_TYPE_SSID; 1052 1053 hdr->info_element[0].len = beacon->ssid_len; 1054 skb_put_data(skb, beacon->ssid, beacon->ssid_len); 1055 1056 tag = skb_put(skb, rate_len); 1057 1058 ieee80211_MFIE_Brate(ieee, &tag); 1059 ieee80211_MFIE_Grate(ieee, &tag); 1060 // For CCX 1 S13, CKIP. Added by Annie, 2006-08-14. 1061 if (beacon->bCkipSupported) { 1062 static u8 AironetIeOui[] = {0x00, 0x01, 0x66}; // "4500-client" 1063 u8 CcxAironetBuf[30]; 1064 struct octet_string osCcxAironetIE; 1065 1066 memset(CcxAironetBuf, 0, 30); 1067 osCcxAironetIE.octet = CcxAironetBuf; 1068 osCcxAironetIE.length = sizeof(CcxAironetBuf); 1069 // 1070 // Ref. CCX test plan v3.61, 3.2.3.1 step 13. 1071 // We want to make the device type as "4500-client". 060926, by CCW. 1072 // 1073 memcpy(osCcxAironetIE.octet, AironetIeOui, sizeof(AironetIeOui)); 1074 1075 // CCX1 spec V1.13, A01.1 CKIP Negotiation (page23): 1076 // "The CKIP negotiation is started with the associate request from the client to the access point, 1077 // containing an Aironet element with both the MIC and KP bits set." 1078 osCcxAironetIE.octet[IE_CISCO_FLAG_POSITION] |= (SUPPORT_CKIP_PK | SUPPORT_CKIP_MIC); 1079 tag = skb_put(skb, ckip_ie_len); 1080 *tag++ = MFIE_TYPE_AIRONET; 1081 *tag++ = osCcxAironetIE.length; 1082 memcpy(tag, osCcxAironetIE.octet, osCcxAironetIE.length); 1083 tag += osCcxAironetIE.length; 1084 } 1085 1086 if (beacon->bCcxRmEnable) { 1087 static u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 0x00}; 1088 struct octet_string osCcxRmCap; 1089 1090 osCcxRmCap.octet = CcxRmCapBuf; 1091 osCcxRmCap.length = sizeof(CcxRmCapBuf); 1092 tag = skb_put(skb, ccxrm_ie_len); 1093 *tag++ = MFIE_TYPE_GENERIC; 1094 *tag++ = osCcxRmCap.length; 1095 memcpy(tag, osCcxRmCap.octet, osCcxRmCap.length); 1096 tag += osCcxRmCap.length; 1097 } 1098 1099 if (beacon->BssCcxVerNumber >= 2) { 1100 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00}; 1101 struct octet_string osCcxVerNum; 1102 CcxVerNumBuf[4] = beacon->BssCcxVerNumber; 1103 osCcxVerNum.octet = CcxVerNumBuf; 1104 osCcxVerNum.length = sizeof(CcxVerNumBuf); 1105 tag = skb_put(skb, cxvernum_ie_len); 1106 *tag++ = MFIE_TYPE_GENERIC; 1107 *tag++ = osCcxVerNum.length; 1108 memcpy(tag, osCcxVerNum.octet, osCcxVerNum.length); 1109 tag += osCcxVerNum.length; 1110 } 1111 //HT cap element 1112 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1113 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) { 1114 tag = skb_put(skb, ht_cap_len); 1115 *tag++ = MFIE_TYPE_HT_CAP; 1116 *tag++ = ht_cap_len - 2; 1117 memcpy(tag, ht_cap_buf, ht_cap_len - 2); 1118 tag += ht_cap_len - 2; 1119 } 1120 } 1121 1122 //choose what wpa_supplicant gives to associate. 1123 if (wpa_ie_len) 1124 skb_put_data(skb, ieee->wpa_ie, wpa_ie_len); 1125 1126 if (wmm_info_len) { 1127 tag = skb_put(skb, wmm_info_len); 1128 ieee80211_WMM_Info(ieee, &tag); 1129 } 1130 #ifdef THOMAS_TURBO 1131 if (turbo_info_len) { 1132 tag = skb_put(skb, turbo_info_len); 1133 ieee80211_TURBO_Info(ieee, &tag); 1134 } 1135 #endif 1136 1137 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1138 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) { 1139 tag = skb_put(skb, ht_cap_len); 1140 *tag++ = MFIE_TYPE_GENERIC; 1141 *tag++ = ht_cap_len - 2; 1142 memcpy(tag, ht_cap_buf, ht_cap_len - 2); 1143 tag += ht_cap_len - 2; 1144 } 1145 1146 if (ieee->pHTInfo->bCurrentRT2RTAggregation) { 1147 tag = skb_put(skb, realtek_ie_len); 1148 *tag++ = MFIE_TYPE_GENERIC; 1149 *tag++ = realtek_ie_len - 2; 1150 memcpy(tag, realtek_ie_buf, realtek_ie_len - 2); 1151 } 1152 } 1153 // printk("<=====%s(), %p, %p\n", __func__, ieee->dev, ieee->dev->dev_addr); 1154 // IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 1155 return skb; 1156 } 1157 1158 void ieee80211_associate_abort(struct ieee80211_device *ieee) 1159 { 1160 unsigned long flags; 1161 spin_lock_irqsave(&ieee->lock, flags); 1162 1163 ieee->associate_seq++; 1164 1165 /* don't scan, and avoid having the RX path possibly 1166 * try again to associate. Even do not react to AUTH or 1167 * ASSOC response. Just wait for the retry wq to be scheduled. 1168 * Here we will check if there are good nets to associate 1169 * with, so we retry or just get back to NO_LINK and scanning 1170 */ 1171 if (ieee->state == IEEE80211_ASSOCIATING_AUTHENTICATING) { 1172 IEEE80211_DEBUG_MGMT("Authentication failed\n"); 1173 ieee->softmac_stats.no_auth_rs++; 1174 } else { 1175 IEEE80211_DEBUG_MGMT("Association failed\n"); 1176 ieee->softmac_stats.no_ass_rs++; 1177 } 1178 1179 ieee->state = IEEE80211_ASSOCIATING_RETRY; 1180 1181 schedule_delayed_work(&ieee->associate_retry_wq, \ 1182 IEEE80211_SOFTMAC_ASSOC_RETRY_TIME); 1183 1184 spin_unlock_irqrestore(&ieee->lock, flags); 1185 } 1186 1187 static void ieee80211_associate_abort_cb(struct timer_list *t) 1188 { 1189 struct ieee80211_device *dev = from_timer(dev, t, associate_timer); 1190 1191 ieee80211_associate_abort(dev); 1192 } 1193 1194 static void ieee80211_associate_step1(struct ieee80211_device *ieee) 1195 { 1196 struct ieee80211_network *beacon = &ieee->current_network; 1197 struct sk_buff *skb; 1198 1199 IEEE80211_DEBUG_MGMT("Stopping scan\n"); 1200 1201 ieee->softmac_stats.tx_auth_rq++; 1202 skb = ieee80211_authentication_req(beacon, ieee, 0); 1203 1204 if (!skb) { 1205 ieee80211_associate_abort(ieee); 1206 } else { 1207 ieee->state = IEEE80211_ASSOCIATING_AUTHENTICATING; 1208 IEEE80211_DEBUG_MGMT("Sending authentication request\n"); 1209 softmac_mgmt_xmit(skb, ieee); 1210 //BUGON when you try to add_timer twice, using mod_timer may be better, john0709 1211 if (!timer_pending(&ieee->associate_timer)) { 1212 ieee->associate_timer.expires = jiffies + (HZ / 2); 1213 add_timer(&ieee->associate_timer); 1214 } 1215 //dev_kfree_skb_any(skb);//edit by thomas 1216 } 1217 } 1218 1219 static void ieee80211_auth_challenge(struct ieee80211_device *ieee, 1220 u8 *challenge, 1221 int chlen) 1222 { 1223 u8 *c; 1224 struct sk_buff *skb; 1225 struct ieee80211_network *beacon = &ieee->current_network; 1226 // int hlen = sizeof(struct ieee80211_authentication); 1227 1228 ieee->associate_seq++; 1229 ieee->softmac_stats.tx_auth_rq++; 1230 1231 skb = ieee80211_authentication_req(beacon, ieee, chlen + 2); 1232 if (!skb) { 1233 ieee80211_associate_abort(ieee); 1234 } else { 1235 c = skb_put(skb, chlen + 2); 1236 *(c++) = MFIE_TYPE_CHALLENGE; 1237 *(c++) = chlen; 1238 memcpy(c, challenge, chlen); 1239 1240 IEEE80211_DEBUG_MGMT("Sending authentication challenge response\n"); 1241 1242 ieee80211_encrypt_fragment(ieee, skb, sizeof(struct rtl_80211_hdr_3addr)); 1243 1244 softmac_mgmt_xmit(skb, ieee); 1245 mod_timer(&ieee->associate_timer, jiffies + (HZ / 2)); 1246 //dev_kfree_skb_any(skb);//edit by thomas 1247 } 1248 kfree(challenge); 1249 } 1250 1251 static void ieee80211_associate_step2(struct ieee80211_device *ieee) 1252 { 1253 struct sk_buff *skb; 1254 struct ieee80211_network *beacon = &ieee->current_network; 1255 1256 del_timer_sync(&ieee->associate_timer); 1257 1258 IEEE80211_DEBUG_MGMT("Sending association request\n"); 1259 1260 ieee->softmac_stats.tx_ass_rq++; 1261 skb = ieee80211_association_req(beacon, ieee); 1262 if (!skb) { 1263 ieee80211_associate_abort(ieee); 1264 } else { 1265 softmac_mgmt_xmit(skb, ieee); 1266 mod_timer(&ieee->associate_timer, jiffies + (HZ / 2)); 1267 //dev_kfree_skb_any(skb);//edit by thomas 1268 } 1269 } 1270 static void ieee80211_associate_complete_wq(struct work_struct *work) 1271 { 1272 struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, associate_complete_wq); 1273 1274 netdev_info(ieee->dev, "Associated successfully\n"); 1275 if (ieee80211_is_54g(&ieee->current_network) && 1276 (ieee->modulation & IEEE80211_OFDM_MODULATION)) { 1277 ieee->rate = 108; 1278 netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate); 1279 } else { 1280 ieee->rate = 22; 1281 netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate); 1282 } 1283 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { 1284 printk("Successfully associated, ht enabled\n"); 1285 HTOnAssocRsp(ieee); 1286 } else { 1287 printk("Successfully associated, ht not enabled(%d, %d)\n", ieee->pHTInfo->bCurrentHTSupport, ieee->pHTInfo->bEnableHT); 1288 memset(ieee->dot11HTOperationalRateSet, 0, 16); 1289 //HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 1290 } 1291 ieee->LinkDetectInfo.SlotNum = 2 * (1 + ieee->current_network.beacon_interval / 500); 1292 // To prevent the immediately calling watch_dog after association. 1293 if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 || ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) { 1294 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1; 1295 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1; 1296 } 1297 ieee->link_change(ieee->dev); 1298 if (!ieee->is_silent_reset) { 1299 printk("============>normal associate\n"); 1300 notify_wx_assoc_event(ieee); 1301 } else { 1302 printk("==================>silent reset associate\n"); 1303 ieee->is_silent_reset = false; 1304 } 1305 1306 if (ieee->data_hard_resume) 1307 ieee->data_hard_resume(ieee->dev); 1308 netif_carrier_on(ieee->dev); 1309 } 1310 1311 static void ieee80211_associate_complete(struct ieee80211_device *ieee) 1312 { 1313 // int i; 1314 // struct net_device* dev = ieee->dev; 1315 del_timer_sync(&ieee->associate_timer); 1316 1317 ieee->state = IEEE80211_LINKED; 1318 //ieee->UpdateHalRATRTableHandler(dev, ieee->dot11HTOperationalRateSet); 1319 schedule_work(&ieee->associate_complete_wq); 1320 } 1321 1322 static void ieee80211_associate_procedure_wq(struct work_struct *work) 1323 { 1324 struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, associate_procedure_wq); 1325 ieee->sync_scan_hurryup = 1; 1326 mutex_lock(&ieee->wx_mutex); 1327 1328 if (ieee->data_hard_stop) 1329 ieee->data_hard_stop(ieee->dev); 1330 1331 ieee80211_stop_scan(ieee); 1332 printk("===>%s(), chan:%d\n", __func__, ieee->current_network.channel); 1333 //ieee->set_chan(ieee->dev, ieee->current_network.channel); 1334 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 1335 1336 ieee->associate_seq = 1; 1337 ieee80211_associate_step1(ieee); 1338 1339 mutex_unlock(&ieee->wx_mutex); 1340 } 1341 1342 inline void ieee80211_softmac_new_net(struct ieee80211_device *ieee, struct ieee80211_network *net) 1343 { 1344 u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1]; 1345 int tmp_ssid_len = 0; 1346 1347 short apset, ssidset, ssidbroad, apmatch, ssidmatch; 1348 1349 /* we are interested in new new only if we are not associated 1350 * and we are not associating / authenticating 1351 */ 1352 if (ieee->state != IEEE80211_NOLINK) 1353 return; 1354 1355 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability & WLAN_CAPABILITY_BSS)) 1356 return; 1357 1358 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability & WLAN_CAPABILITY_IBSS)) 1359 return; 1360 1361 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) { 1362 /* if the user specified the AP MAC, we need also the essid 1363 * This could be obtained by beacons or, if the network does not 1364 * broadcast it, it can be put manually. 1365 */ 1366 apset = ieee->wap_set;//(memcmp(ieee->current_network.bssid, zero,ETH_ALEN)!=0 ); 1367 ssidset = ieee->ssid_set;//ieee->current_network.ssid[0] != '\0'; 1368 ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0'); 1369 apmatch = (memcmp(ieee->current_network.bssid, net->bssid, ETH_ALEN) == 0); 1370 ssidmatch = (ieee->current_network.ssid_len == net->ssid_len) && 1371 (!strncmp(ieee->current_network.ssid, net->ssid, net->ssid_len)); 1372 1373 /* if the user set the AP check if match. 1374 * if the network does not broadcast essid we check the user supplyed ANY essid 1375 * if the network does broadcast and the user does not set essid it is OK 1376 * if the network does broadcast and the user did set essid check if essid match 1377 */ 1378 if ((apset && apmatch && 1379 ((ssidset && ssidbroad && ssidmatch) || (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) || 1380 /* if the ap is not set, check that the user set the bssid 1381 * and the network does broadcast and that those two bssid matches 1382 */ 1383 (!apset && ssidset && ssidbroad && ssidmatch)) { 1384 /* if the essid is hidden replace it with the 1385 * essid provided by the user. 1386 */ 1387 if (!ssidbroad) { 1388 strncpy(tmp_ssid, ieee->current_network.ssid, IW_ESSID_MAX_SIZE); 1389 tmp_ssid_len = ieee->current_network.ssid_len; 1390 } 1391 memcpy(&ieee->current_network, net, sizeof(struct ieee80211_network)); 1392 1393 strncpy(ieee->current_network.ssid, tmp_ssid, IW_ESSID_MAX_SIZE); 1394 ieee->current_network.ssid_len = tmp_ssid_len; 1395 netdev_info(ieee->dev, 1396 "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d\n", 1397 ieee->current_network.ssid, 1398 ieee->current_network.channel, 1399 ieee->current_network.qos_data.supported, 1400 ieee->pHTInfo->bEnableHT, 1401 ieee->current_network.bssht.bdSupportHT); 1402 1403 //ieee->pHTInfo->IOTAction = 0; 1404 HTResetIOTSetting(ieee->pHTInfo); 1405 if (ieee->iw_mode == IW_MODE_INFRA) { 1406 /* Join the network for the first time */ 1407 ieee->AsocRetryCount = 0; 1408 //for HT by amy 080514 1409 if ((ieee->current_network.qos_data.supported == 1) && 1410 // (ieee->pHTInfo->bEnableHT && ieee->current_network.bssht.bdSupportHT)) 1411 ieee->current_network.bssht.bdSupportHT) { 1412 /*WB, 2008.09.09:bCurrentHTSupport and bEnableHT two flags are going to put together to check whether we are in HT now, so needn't to check bEnableHT flags here. That's is to say we will set to HT support whenever joined AP has the ability to support HT. And whether we are in HT or not, please check bCurrentHTSupport&&bEnableHT now please.*/ 1413 // ieee->pHTInfo->bCurrentHTSupport = true; 1414 HTResetSelfAndSavePeerSetting(ieee, &ieee->current_network); 1415 } else { 1416 ieee->pHTInfo->bCurrentHTSupport = false; 1417 } 1418 1419 ieee->state = IEEE80211_ASSOCIATING; 1420 schedule_work(&ieee->associate_procedure_wq); 1421 } else { 1422 if (ieee80211_is_54g(&ieee->current_network) && 1423 (ieee->modulation & IEEE80211_OFDM_MODULATION)) { 1424 ieee->rate = 108; 1425 ieee->SetWirelessMode(ieee->dev, IEEE_G); 1426 netdev_info(ieee->dev, 1427 "Using G rates\n"); 1428 } else { 1429 ieee->rate = 22; 1430 ieee->SetWirelessMode(ieee->dev, IEEE_B); 1431 netdev_info(ieee->dev, 1432 "Using B rates\n"); 1433 } 1434 memset(ieee->dot11HTOperationalRateSet, 0, 16); 1435 //HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 1436 ieee->state = IEEE80211_LINKED; 1437 } 1438 } 1439 } 1440 } 1441 1442 void ieee80211_softmac_check_all_nets(struct ieee80211_device *ieee) 1443 { 1444 unsigned long flags; 1445 struct ieee80211_network *target; 1446 1447 spin_lock_irqsave(&ieee->lock, flags); 1448 1449 list_for_each_entry(target, &ieee->network_list, list) { 1450 /* if the state become different that NOLINK means 1451 * we had found what we are searching for 1452 */ 1453 1454 if (ieee->state != IEEE80211_NOLINK) 1455 break; 1456 1457 if (ieee->scan_age == 0 || time_after(target->last_scanned + ieee->scan_age, jiffies)) 1458 ieee80211_softmac_new_net(ieee, target); 1459 } 1460 1461 spin_unlock_irqrestore(&ieee->lock, flags); 1462 } 1463 1464 static inline u16 auth_parse(struct sk_buff *skb, u8 **challenge, int *chlen) 1465 { 1466 struct ieee80211_authentication *a; 1467 u8 *t; 1468 if (skb->len < (sizeof(struct ieee80211_authentication) - sizeof(struct ieee80211_info_element))) { 1469 IEEE80211_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len); 1470 return 0xcafe; 1471 } 1472 *challenge = NULL; 1473 a = (struct ieee80211_authentication *)skb->data; 1474 if (skb->len > (sizeof(struct ieee80211_authentication) + 3)) { 1475 t = skb->data + sizeof(struct ieee80211_authentication); 1476 1477 if (*(t++) == MFIE_TYPE_CHALLENGE) { 1478 *chlen = *(t++); 1479 *challenge = kmemdup(t, *chlen, GFP_ATOMIC); 1480 if (!*challenge) 1481 return -ENOMEM; 1482 } 1483 } 1484 1485 return le16_to_cpu(a->status); 1486 } 1487 1488 static int auth_rq_parse(struct sk_buff *skb, u8 *dest) 1489 { 1490 struct ieee80211_authentication *a; 1491 1492 if (skb->len < (sizeof(struct ieee80211_authentication) - sizeof(struct ieee80211_info_element))) { 1493 IEEE80211_DEBUG_MGMT("invalid len in auth request: %d\n", skb->len); 1494 return -1; 1495 } 1496 a = (struct ieee80211_authentication *)skb->data; 1497 1498 memcpy(dest, a->header.addr2, ETH_ALEN); 1499 1500 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN) 1501 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; 1502 1503 return WLAN_STATUS_SUCCESS; 1504 } 1505 1506 static short probe_rq_parse(struct ieee80211_device *ieee, struct sk_buff *skb, u8 *src) 1507 { 1508 u8 *tag; 1509 u8 *skbend; 1510 u8 *ssid = NULL; 1511 u8 ssidlen = 0; 1512 1513 struct rtl_80211_hdr_3addr *header = 1514 (struct rtl_80211_hdr_3addr *)skb->data; 1515 1516 if (skb->len < sizeof(struct rtl_80211_hdr_3addr)) 1517 return -1; /* corrupted */ 1518 1519 memcpy(src, header->addr2, ETH_ALEN); 1520 1521 skbend = (u8 *)skb->data + skb->len; 1522 1523 tag = skb->data + sizeof(struct rtl_80211_hdr_3addr); 1524 1525 while (tag + 1 < skbend) { 1526 if (*tag == 0) { 1527 ssid = tag + 2; 1528 ssidlen = *(tag + 1); 1529 break; 1530 } 1531 tag++; /* point to the len field */ 1532 tag = tag + *(tag); /* point to the last data byte of the tag */ 1533 tag++; /* point to the next tag */ 1534 } 1535 1536 //IEEE80211DMESG("Card MAC address is "MACSTR, MAC2STR(src)); 1537 if (ssidlen == 0) 1538 return 1; 1539 1540 if (!ssid) 1541 return 1; /* ssid not found in tagged param */ 1542 1543 return (!strncmp(ssid, ieee->current_network.ssid, ssidlen)); 1544 } 1545 1546 static int assoc_rq_parse(struct sk_buff *skb, u8 *dest) 1547 { 1548 struct ieee80211_assoc_request_frame *a; 1549 1550 if (skb->len < (sizeof(struct ieee80211_assoc_request_frame) - 1551 sizeof(struct ieee80211_info_element))) { 1552 IEEE80211_DEBUG_MGMT("invalid len in auth request:%d \n", skb->len); 1553 return -1; 1554 } 1555 1556 a = (struct ieee80211_assoc_request_frame *)skb->data; 1557 1558 memcpy(dest, a->header.addr2, ETH_ALEN); 1559 1560 return 0; 1561 } 1562 1563 static inline u16 assoc_parse(struct ieee80211_device *ieee, struct sk_buff *skb, int *aid) 1564 { 1565 struct ieee80211_assoc_response_frame *response_head; 1566 u16 status_code; 1567 1568 if (skb->len < sizeof(struct ieee80211_assoc_response_frame)) { 1569 IEEE80211_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len); 1570 return 0xcafe; 1571 } 1572 1573 response_head = (struct ieee80211_assoc_response_frame *)skb->data; 1574 *aid = le16_to_cpu(response_head->aid) & 0x3fff; 1575 1576 status_code = le16_to_cpu(response_head->status); 1577 if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES || 1578 status_code == WLAN_STATUS_CAPS_UNSUPPORTED) && 1579 ((ieee->mode == IEEE_G) && 1580 (ieee->current_network.mode == IEEE_N_24G) && 1581 (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT - 1)))) { 1582 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE; 1583 } else { 1584 ieee->AsocRetryCount = 0; 1585 } 1586 1587 return le16_to_cpu(response_head->status); 1588 } 1589 1590 static inline void 1591 ieee80211_rx_probe_rq(struct ieee80211_device *ieee, struct sk_buff *skb) 1592 { 1593 u8 dest[ETH_ALEN]; 1594 1595 //IEEE80211DMESG("Rx probe"); 1596 ieee->softmac_stats.rx_probe_rq++; 1597 //DMESG("Dest is "MACSTR, MAC2STR(dest)); 1598 if (probe_rq_parse(ieee, skb, dest)) { 1599 //IEEE80211DMESG("Was for me!"); 1600 ieee->softmac_stats.tx_probe_rs++; 1601 ieee80211_resp_to_probe(ieee, dest); 1602 } 1603 } 1604 1605 static inline void 1606 ieee80211_rx_auth_rq(struct ieee80211_device *ieee, struct sk_buff *skb) 1607 { 1608 u8 dest[ETH_ALEN]; 1609 int status; 1610 //IEEE80211DMESG("Rx probe"); 1611 ieee->softmac_stats.rx_auth_rq++; 1612 1613 status = auth_rq_parse(skb, dest); 1614 if (status != -1) 1615 ieee80211_resp_to_auth(ieee, status, dest); 1616 //DMESG("Dest is "MACSTR, MAC2STR(dest)); 1617 } 1618 1619 static inline void 1620 ieee80211_rx_assoc_rq(struct ieee80211_device *ieee, struct sk_buff *skb) 1621 { 1622 u8 dest[ETH_ALEN]; 1623 //unsigned long flags; 1624 1625 ieee->softmac_stats.rx_ass_rq++; 1626 if (assoc_rq_parse(skb, dest) != -1) 1627 ieee80211_resp_to_assoc_rq(ieee, dest); 1628 1629 netdev_info(ieee->dev, "New client associated: %pM\n", dest); 1630 //FIXME 1631 } 1632 1633 static void ieee80211_sta_ps_send_null_frame(struct ieee80211_device *ieee, 1634 short pwr) 1635 { 1636 struct sk_buff *buf = ieee80211_null_func(ieee, pwr); 1637 1638 if (buf) 1639 softmac_ps_mgmt_xmit(buf, ieee); 1640 } 1641 /* EXPORT_SYMBOL(ieee80211_sta_ps_send_null_frame); */ 1642 1643 static short ieee80211_sta_ps_sleep(struct ieee80211_device *ieee, u32 *time_h, 1644 u32 *time_l) 1645 { 1646 int timeout; 1647 u8 dtim; 1648 /*if(ieee->ps == IEEE80211_PS_DISABLED || 1649 ieee->iw_mode != IW_MODE_INFRA || 1650 ieee->state != IEEE80211_LINKED) 1651 1652 return 0; 1653 */ 1654 dtim = ieee->current_network.dtim_data; 1655 if (!(dtim & IEEE80211_DTIM_VALID)) 1656 return 0; 1657 timeout = ieee->current_network.beacon_interval; //should we use ps_timeout value or beacon_interval 1658 ieee->current_network.dtim_data = IEEE80211_DTIM_INVALID; 1659 1660 if (dtim & ((IEEE80211_DTIM_UCAST | IEEE80211_DTIM_MBCAST) & ieee->ps)) 1661 return 2; 1662 1663 if (!time_after(jiffies, 1664 dev_trans_start(ieee->dev) + msecs_to_jiffies(timeout))) 1665 return 0; 1666 1667 if (!time_after(jiffies, 1668 ieee->last_rx_ps_time + msecs_to_jiffies(timeout))) 1669 return 0; 1670 1671 if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) && 1672 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head)) 1673 return 0; 1674 1675 if (time_l) { 1676 *time_l = ieee->current_network.last_dtim_sta_time[0] 1677 + (ieee->current_network.beacon_interval 1678 * ieee->current_network.dtim_period) * 1000; 1679 } 1680 1681 if (time_h) { 1682 *time_h = ieee->current_network.last_dtim_sta_time[1]; 1683 if (time_l && *time_l < ieee->current_network.last_dtim_sta_time[0]) 1684 *time_h += 1; 1685 } 1686 1687 return 1; 1688 } 1689 1690 static inline void ieee80211_sta_ps(struct tasklet_struct *t) 1691 { 1692 struct ieee80211_device *ieee = from_tasklet(ieee, t, ps_task); 1693 u32 th, tl; 1694 short sleep; 1695 1696 unsigned long flags, flags2; 1697 1698 spin_lock_irqsave(&ieee->lock, flags); 1699 1700 if ((ieee->ps == IEEE80211_PS_DISABLED || 1701 ieee->iw_mode != IW_MODE_INFRA || 1702 ieee->state != IEEE80211_LINKED)) { 1703 // #warning CHECK_LOCK_HERE 1704 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 1705 1706 ieee80211_sta_wakeup(ieee, 1); 1707 1708 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 1709 } 1710 1711 sleep = ieee80211_sta_ps_sleep(ieee, &th, &tl); 1712 /* 2 wake, 1 sleep, 0 do nothing */ 1713 if (sleep == 0) 1714 goto out; 1715 1716 if (sleep == 1) { 1717 if (ieee->sta_sleep == 1) { 1718 ieee->enter_sleep_state(ieee->dev, th, tl); 1719 } else if (ieee->sta_sleep == 0) { 1720 // printk("send null 1\n"); 1721 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 1722 1723 if (ieee->ps_is_queue_empty(ieee->dev)) { 1724 ieee->sta_sleep = 2; 1725 1726 ieee->ps_request_tx_ack(ieee->dev); 1727 1728 ieee80211_sta_ps_send_null_frame(ieee, 1); 1729 1730 ieee->ps_th = th; 1731 ieee->ps_tl = tl; 1732 } 1733 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 1734 } 1735 } else if (sleep == 2) { 1736 //#warning CHECK_LOCK_HERE 1737 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 1738 1739 ieee80211_sta_wakeup(ieee, 1); 1740 1741 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 1742 } 1743 out: 1744 spin_unlock_irqrestore(&ieee->lock, flags); 1745 } 1746 1747 void ieee80211_sta_wakeup(struct ieee80211_device *ieee, short nl) 1748 { 1749 if (ieee->sta_sleep == 0) { 1750 if (nl) { 1751 printk("Warning: driver is probably failing to report TX ps error\n"); 1752 ieee->ps_request_tx_ack(ieee->dev); 1753 ieee80211_sta_ps_send_null_frame(ieee, 0); 1754 } 1755 return; 1756 } 1757 1758 if (ieee->sta_sleep == 1) 1759 ieee->sta_wake_up(ieee->dev); 1760 1761 ieee->sta_sleep = 0; 1762 1763 if (nl) { 1764 ieee->ps_request_tx_ack(ieee->dev); 1765 ieee80211_sta_ps_send_null_frame(ieee, 0); 1766 } 1767 } 1768 1769 void ieee80211_ps_tx_ack(struct ieee80211_device *ieee, short success) 1770 { 1771 unsigned long flags, flags2; 1772 1773 spin_lock_irqsave(&ieee->lock, flags); 1774 1775 if (ieee->sta_sleep == 2) { 1776 /* Null frame with PS bit set */ 1777 if (success) { 1778 ieee->sta_sleep = 1; 1779 ieee->enter_sleep_state(ieee->dev, ieee->ps_th, ieee->ps_tl); 1780 } 1781 /* if the card report not success we can't be sure the AP 1782 * has not RXed so we can't assume the AP believe us awake 1783 */ 1784 } else { 1785 /* 21112005 - tx again null without PS bit if lost */ 1786 if ((ieee->sta_sleep == 0) && !success) { 1787 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); 1788 ieee80211_sta_ps_send_null_frame(ieee, 0); 1789 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); 1790 } 1791 } 1792 spin_unlock_irqrestore(&ieee->lock, flags); 1793 } 1794 EXPORT_SYMBOL(ieee80211_ps_tx_ack); 1795 1796 static void ieee80211_process_action(struct ieee80211_device *ieee, 1797 struct sk_buff *skb) 1798 { 1799 struct rtl_80211_hdr *header = (struct rtl_80211_hdr *)skb->data; 1800 u8 *act = ieee80211_get_payload(header); 1801 u8 tmp = 0; 1802 // IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA|IEEE80211_DL_BA, skb->data, skb->len); 1803 if (!act) { 1804 IEEE80211_DEBUG(IEEE80211_DL_ERR, "error to get payload of action frame\n"); 1805 return; 1806 } 1807 tmp = *act; 1808 act++; 1809 switch (tmp) { 1810 case ACT_CAT_BA: 1811 if (*act == ACT_ADDBAREQ) 1812 ieee80211_rx_ADDBAReq(ieee, skb); 1813 else if (*act == ACT_ADDBARSP) 1814 ieee80211_rx_ADDBARsp(ieee, skb); 1815 else if (*act == ACT_DELBA) 1816 ieee80211_rx_DELBA(ieee, skb); 1817 break; 1818 default: 1819 break; 1820 } 1821 return; 1822 } 1823 1824 static void ieee80211_check_auth_response(struct ieee80211_device *ieee, 1825 struct sk_buff *skb) 1826 { 1827 /* default support N mode, disable halfNmode */ 1828 bool bSupportNmode = true, bHalfSupportNmode = false; 1829 u16 errcode; 1830 u8 *challenge; 1831 int chlen = 0; 1832 u32 iotAction; 1833 1834 errcode = auth_parse(skb, &challenge, &chlen); 1835 if (!errcode) { 1836 if (ieee->open_wep || !challenge) { 1837 ieee->state = IEEE80211_ASSOCIATING_AUTHENTICATED; 1838 ieee->softmac_stats.rx_auth_rs_ok++; 1839 iotAction = ieee->pHTInfo->IOTAction; 1840 if (!(iotAction & HT_IOT_ACT_PURE_N_MODE)) { 1841 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) { 1842 /* WEP or TKIP encryption */ 1843 if (IsHTHalfNmodeAPs(ieee)) { 1844 bSupportNmode = true; 1845 bHalfSupportNmode = true; 1846 } else { 1847 bSupportNmode = false; 1848 bHalfSupportNmode = false; 1849 } 1850 netdev_dbg(ieee->dev, "SEC(%d, %d)\n", 1851 bSupportNmode, 1852 bHalfSupportNmode); 1853 } 1854 } 1855 /* Dummy wirless mode setting- avoid encryption issue */ 1856 if (bSupportNmode) { 1857 /* N mode setting */ 1858 ieee->SetWirelessMode(ieee->dev, 1859 ieee->current_network.mode); 1860 } else { 1861 /* b/g mode setting - TODO */ 1862 ieee->SetWirelessMode(ieee->dev, IEEE_G); 1863 } 1864 1865 if (ieee->current_network.mode == IEEE_N_24G && 1866 bHalfSupportNmode) { 1867 netdev_dbg(ieee->dev, "enter half N mode\n"); 1868 ieee->bHalfWirelessN24GMode = true; 1869 } else { 1870 ieee->bHalfWirelessN24GMode = false; 1871 } 1872 ieee80211_associate_step2(ieee); 1873 } else { 1874 ieee80211_auth_challenge(ieee, challenge, chlen); 1875 } 1876 } else { 1877 ieee->softmac_stats.rx_auth_rs_err++; 1878 IEEE80211_DEBUG_MGMT("Auth response status code 0x%x", errcode); 1879 ieee80211_associate_abort(ieee); 1880 } 1881 } 1882 1883 inline int 1884 ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb, 1885 struct ieee80211_rx_stats *rx_stats, u16 type, 1886 u16 stype) 1887 { 1888 struct rtl_80211_hdr_3addr *header = (struct rtl_80211_hdr_3addr *)skb->data; 1889 u16 errcode; 1890 int aid; 1891 struct ieee80211_assoc_response_frame *assoc_resp; 1892 // struct ieee80211_info_element *info_element; 1893 1894 if (!ieee->proto_started) 1895 return 0; 1896 1897 if (ieee->sta_sleep || (ieee->ps != IEEE80211_PS_DISABLED && 1898 ieee->iw_mode == IW_MODE_INFRA && 1899 ieee->state == IEEE80211_LINKED)) 1900 tasklet_schedule(&ieee->ps_task); 1901 1902 if (WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_PROBE_RESP && 1903 WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_BEACON) 1904 ieee->last_rx_ps_time = jiffies; 1905 1906 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) { 1907 case IEEE80211_STYPE_ASSOC_RESP: 1908 case IEEE80211_STYPE_REASSOC_RESP: 1909 IEEE80211_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n", 1910 WLAN_FC_GET_STYPE(header->frame_ctl)); 1911 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 1912 ieee->state == IEEE80211_ASSOCIATING_AUTHENTICATED && 1913 ieee->iw_mode == IW_MODE_INFRA) { 1914 struct ieee80211_network *network; 1915 1916 network = kzalloc(sizeof(*network), GFP_KERNEL); 1917 if (!network) 1918 return -ENOMEM; 1919 1920 errcode = assoc_parse(ieee, skb, &aid); 1921 if (!errcode) { 1922 ieee->state = IEEE80211_LINKED; 1923 ieee->assoc_id = aid; 1924 ieee->softmac_stats.rx_ass_ok++; 1925 /* station support qos */ 1926 /* Let the register setting defaultly with Legacy station */ 1927 if (ieee->qos_support) { 1928 assoc_resp = (struct ieee80211_assoc_response_frame *)skb->data; 1929 if (ieee80211_parse_info_param(ieee, assoc_resp->info_element,\ 1930 rx_stats->len - sizeof(*assoc_resp), \ 1931 network, rx_stats)) { 1932 return 1; 1933 } else { 1934 //filling the PeerHTCap. //maybe not necessary as we can get its info from current_network. 1935 memcpy(ieee->pHTInfo->PeerHTCapBuf, network->bssht.bdHTCapBuf, network->bssht.bdHTCapLen); 1936 memcpy(ieee->pHTInfo->PeerHTInfoBuf, network->bssht.bdHTInfoBuf, network->bssht.bdHTInfoLen); 1937 } 1938 if (ieee->handle_assoc_response) 1939 ieee->handle_assoc_response(ieee->dev, (struct ieee80211_assoc_response_frame *)header, network); 1940 } 1941 ieee80211_associate_complete(ieee); 1942 } else { 1943 /* aid could not been allocated */ 1944 ieee->softmac_stats.rx_ass_err++; 1945 printk("Association response status code 0x%x\n", 1946 errcode); 1947 IEEE80211_DEBUG_MGMT("Association response status code 0x%x\n", 1948 errcode); 1949 if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT) 1950 schedule_work(&ieee->associate_procedure_wq); 1951 else 1952 ieee80211_associate_abort(ieee); 1953 } 1954 kfree(network); 1955 } 1956 break; 1957 1958 case IEEE80211_STYPE_ASSOC_REQ: 1959 case IEEE80211_STYPE_REASSOC_REQ: 1960 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 1961 ieee->iw_mode == IW_MODE_MASTER) 1962 ieee80211_rx_assoc_rq(ieee, skb); 1963 break; 1964 1965 case IEEE80211_STYPE_AUTH: 1966 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) { 1967 if (ieee->state == IEEE80211_ASSOCIATING_AUTHENTICATING 1968 && ieee->iw_mode == IW_MODE_INFRA) { 1969 IEEE80211_DEBUG_MGMT("Received auth response"); 1970 ieee80211_check_auth_response(ieee, skb); 1971 } else if (ieee->iw_mode == IW_MODE_MASTER) { 1972 ieee80211_rx_auth_rq(ieee, skb); 1973 } 1974 } 1975 break; 1976 1977 case IEEE80211_STYPE_PROBE_REQ: 1978 if ((ieee->softmac_features & IEEE_SOFTMAC_PROBERS) && 1979 ((ieee->iw_mode == IW_MODE_ADHOC || 1980 ieee->iw_mode == IW_MODE_MASTER) && 1981 ieee->state == IEEE80211_LINKED)) { 1982 ieee80211_rx_probe_rq(ieee, skb); 1983 } 1984 break; 1985 1986 case IEEE80211_STYPE_DISASSOC: 1987 case IEEE80211_STYPE_DEAUTH: 1988 /* FIXME for now repeat all the association procedure 1989 * both for disassociation and deauthentication 1990 */ 1991 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && 1992 ieee->state == IEEE80211_LINKED && 1993 ieee->iw_mode == IW_MODE_INFRA) { 1994 ieee->state = IEEE80211_ASSOCIATING; 1995 ieee->softmac_stats.reassoc++; 1996 1997 notify_wx_assoc_event(ieee); 1998 //HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 1999 RemovePeerTS(ieee, header->addr2); 2000 schedule_work(&ieee->associate_procedure_wq); 2001 } 2002 break; 2003 case IEEE80211_STYPE_MANAGE_ACT: 2004 ieee80211_process_action(ieee, skb); 2005 break; 2006 default: 2007 return -1; 2008 } 2009 2010 //dev_kfree_skb_any(skb); 2011 return 0; 2012 } 2013 2014 /* The following are for a simpler TX queue management. 2015 * Instead of using netif_[stop/wake]_queue, the driver 2016 * will use these two functions (plus a reset one) that 2017 * will internally call the kernel netif_* and take care 2018 * of the ieee802.11 fragmentation. 2019 * So, the driver receives a fragment at a time and might 2020 * call the stop function when it wants, without taking 2021 * care to have enough room to TX an entire packet. 2022 * This might be useful if each fragment needs its own 2023 * descriptor. Thus, just keeping a total free memory > than 2024 * the max fragmentation threshold is not enough. If the 2025 * ieee802.11 stack passed a TXB struct, then you would need 2026 * to keep N free descriptors where 2027 * N = MAX_PACKET_SIZE / MIN_FRAG_THRESHOLD. 2028 * In this way you need just one and the 802.11 stack 2029 * will take care of buffering fragments and pass them to 2030 * to the driver later, when it wakes the queue. 2031 */ 2032 void ieee80211_softmac_xmit(struct ieee80211_txb *txb, struct ieee80211_device *ieee) 2033 { 2034 unsigned int queue_index = txb->queue_index; 2035 unsigned long flags; 2036 int i; 2037 struct cb_desc *tcb_desc = NULL; 2038 2039 spin_lock_irqsave(&ieee->lock, flags); 2040 2041 /* called with 2nd parm 0, no tx mgmt lock required */ 2042 ieee80211_sta_wakeup(ieee, 0); 2043 2044 /* update the tx status */ 2045 ieee->stats.tx_bytes += le16_to_cpu(txb->payload_size); 2046 ieee->stats.tx_packets++; 2047 tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb + MAX_DEV_ADDR_SIZE); 2048 if (tcb_desc->bMulticast) 2049 ieee->stats.multicast++; 2050 2051 /* if xmit available, just xmit it immediately, else just insert it to the wait queue */ 2052 for (i = 0; i < txb->nr_frags; i++) { 2053 #ifdef USB_TX_DRIVER_AGGREGATION_ENABLE 2054 if ((skb_queue_len(&ieee->skb_drv_aggQ[queue_index]) != 0) || 2055 #else 2056 if ((skb_queue_len(&ieee->skb_waitQ[queue_index]) != 0) || 2057 #endif 2058 (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) || 2059 (ieee->queue_stop)) { 2060 /* insert the skb packet to the wait queue */ 2061 /* as for the completion function, it does not need 2062 * to check it any more. 2063 * */ 2064 //printk("error:no descriptor left@queue_index %d\n", queue_index); 2065 //ieee80211_stop_queue(ieee); 2066 #ifdef USB_TX_DRIVER_AGGREGATION_ENABLE 2067 skb_queue_tail(&ieee->skb_drv_aggQ[queue_index], txb->fragments[i]); 2068 #else 2069 skb_queue_tail(&ieee->skb_waitQ[queue_index], txb->fragments[i]); 2070 #endif 2071 } else { 2072 ieee->softmac_data_hard_start_xmit(txb->fragments[i], 2073 ieee->dev, ieee->rate); 2074 //ieee->stats.tx_packets++; 2075 //ieee->stats.tx_bytes += txb->fragments[i]->len; 2076 //ieee->dev->trans_start = jiffies; 2077 } 2078 } 2079 ieee80211_txb_free(txb); 2080 2081 //exit: 2082 spin_unlock_irqrestore(&ieee->lock, flags); 2083 } 2084 EXPORT_SYMBOL(ieee80211_softmac_xmit); 2085 2086 /* called with ieee->lock acquired */ 2087 static void ieee80211_resume_tx(struct ieee80211_device *ieee) 2088 { 2089 int i; 2090 for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags; i++) { 2091 if (ieee->queue_stop) { 2092 ieee->tx_pending.frag = i; 2093 return; 2094 } else { 2095 ieee->softmac_data_hard_start_xmit(ieee->tx_pending.txb->fragments[i], 2096 ieee->dev, ieee->rate); 2097 //(i+1)<ieee->tx_pending.txb->nr_frags); 2098 ieee->stats.tx_packets++; 2099 netif_trans_update(ieee->dev); 2100 } 2101 } 2102 2103 ieee80211_txb_free(ieee->tx_pending.txb); 2104 ieee->tx_pending.txb = NULL; 2105 } 2106 2107 void ieee80211_reset_queue(struct ieee80211_device *ieee) 2108 { 2109 unsigned long flags; 2110 2111 spin_lock_irqsave(&ieee->lock, flags); 2112 init_mgmt_queue(ieee); 2113 if (ieee->tx_pending.txb) { 2114 ieee80211_txb_free(ieee->tx_pending.txb); 2115 ieee->tx_pending.txb = NULL; 2116 } 2117 ieee->queue_stop = 0; 2118 spin_unlock_irqrestore(&ieee->lock, flags); 2119 } 2120 EXPORT_SYMBOL(ieee80211_reset_queue); 2121 2122 void ieee80211_wake_queue(struct ieee80211_device *ieee) 2123 { 2124 unsigned long flags; 2125 struct sk_buff *skb; 2126 struct rtl_80211_hdr_3addr *header; 2127 2128 spin_lock_irqsave(&ieee->lock, flags); 2129 if (!ieee->queue_stop) 2130 goto exit; 2131 2132 ieee->queue_stop = 0; 2133 2134 if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) { 2135 while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) { 2136 header = (struct rtl_80211_hdr_3addr *)skb->data; 2137 2138 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 2139 2140 if (ieee->seq_ctrl[0] == 0xFFF) 2141 ieee->seq_ctrl[0] = 0; 2142 else 2143 ieee->seq_ctrl[0]++; 2144 2145 ieee->softmac_data_hard_start_xmit(skb, ieee->dev, ieee->basic_rate); 2146 //dev_kfree_skb_any(skb);//edit by thomas 2147 } 2148 } 2149 if (!ieee->queue_stop && ieee->tx_pending.txb) 2150 ieee80211_resume_tx(ieee); 2151 2152 if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) { 2153 ieee->softmac_stats.swtxawake++; 2154 netif_wake_queue(ieee->dev); 2155 } 2156 exit: 2157 spin_unlock_irqrestore(&ieee->lock, flags); 2158 } 2159 EXPORT_SYMBOL(ieee80211_wake_queue); 2160 2161 void ieee80211_stop_queue(struct ieee80211_device *ieee) 2162 { 2163 //unsigned long flags; 2164 //spin_lock_irqsave(&ieee->lock,flags); 2165 2166 if (!netif_queue_stopped(ieee->dev)) { 2167 netif_stop_queue(ieee->dev); 2168 ieee->softmac_stats.swtxstop++; 2169 } 2170 ieee->queue_stop = 1; 2171 //spin_unlock_irqrestore(&ieee->lock,flags); 2172 } 2173 EXPORT_SYMBOL(ieee80211_stop_queue); 2174 2175 /* called in user context only */ 2176 void ieee80211_start_master_bss(struct ieee80211_device *ieee) 2177 { 2178 ieee->assoc_id = 1; 2179 2180 if (ieee->current_network.ssid_len == 0) { 2181 strncpy(ieee->current_network.ssid, 2182 IEEE80211_DEFAULT_TX_ESSID, 2183 IW_ESSID_MAX_SIZE); 2184 2185 ieee->current_network.ssid_len = strlen(IEEE80211_DEFAULT_TX_ESSID); 2186 ieee->ssid_set = 1; 2187 } 2188 2189 memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN); 2190 2191 ieee->set_chan(ieee->dev, ieee->current_network.channel); 2192 ieee->state = IEEE80211_LINKED; 2193 ieee->link_change(ieee->dev); 2194 notify_wx_assoc_event(ieee); 2195 2196 if (ieee->data_hard_resume) 2197 ieee->data_hard_resume(ieee->dev); 2198 2199 netif_carrier_on(ieee->dev); 2200 } 2201 2202 static void ieee80211_start_monitor_mode(struct ieee80211_device *ieee) 2203 { 2204 if (ieee->raw_tx) { 2205 if (ieee->data_hard_resume) 2206 ieee->data_hard_resume(ieee->dev); 2207 2208 netif_carrier_on(ieee->dev); 2209 } 2210 } 2211 static void ieee80211_start_ibss_wq(struct work_struct *work) 2212 { 2213 struct delayed_work *dwork = to_delayed_work(work); 2214 struct ieee80211_device *ieee = container_of(dwork, struct ieee80211_device, start_ibss_wq); 2215 /* iwconfig mode ad-hoc will schedule this and return 2216 * on the other hand this will block further iwconfig SET 2217 * operations because of the wx_mutex hold. 2218 * Anyway some most set operations set a flag to speed-up 2219 * (abort) this wq (when syncro scanning) before sleeping 2220 * on the semaphore 2221 */ 2222 if (!ieee->proto_started) { 2223 printk("==========oh driver down return\n"); 2224 return; 2225 } 2226 mutex_lock(&ieee->wx_mutex); 2227 2228 if (ieee->current_network.ssid_len == 0) { 2229 strcpy(ieee->current_network.ssid, IEEE80211_DEFAULT_TX_ESSID); 2230 ieee->current_network.ssid_len = strlen(IEEE80211_DEFAULT_TX_ESSID); 2231 ieee->ssid_set = 1; 2232 } 2233 2234 /* check if we have this cell in our network list */ 2235 ieee80211_softmac_check_all_nets(ieee); 2236 2237 // if((IS_DOT11D_ENABLE(ieee)) && (ieee->state == IEEE80211_NOLINK)) 2238 if (ieee->state == IEEE80211_NOLINK) 2239 ieee->current_network.channel = 6; 2240 /* if not then the state is not linked. Maybe the user switched to 2241 * ad-hoc mode just after being in monitor mode, or just after 2242 * being very few time in managed mode (so the card have had no 2243 * time to scan all the chans..) or we have just run up the iface 2244 * after setting ad-hoc mode. So we have to give another try.. 2245 * Here, in ibss mode, should be safe to do this without extra care 2246 * (in bss mode we had to make sure no-one tried to associate when 2247 * we had just checked the ieee->state and we was going to start the 2248 * scan) because in ibss mode the ieee80211_new_net function, when 2249 * finds a good net, just set the ieee->state to IEEE80211_LINKED, 2250 * so, at worst, we waste a bit of time to initiate an unneeded syncro 2251 * scan, that will stop at the first round because it sees the state 2252 * associated. 2253 */ 2254 if (ieee->state == IEEE80211_NOLINK) 2255 ieee80211_start_scan_syncro(ieee); 2256 2257 /* the network definitively is not here.. create a new cell */ 2258 if (ieee->state == IEEE80211_NOLINK) { 2259 printk("creating new IBSS cell\n"); 2260 if (!ieee->wap_set) 2261 eth_random_addr(ieee->current_network.bssid); 2262 2263 if (ieee->modulation & IEEE80211_CCK_MODULATION) { 2264 ieee->current_network.rates_len = 4; 2265 2266 ieee->current_network.rates[0] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB; 2267 ieee->current_network.rates[1] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB; 2268 ieee->current_network.rates[2] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB; 2269 ieee->current_network.rates[3] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB; 2270 } else { 2271 ieee->current_network.rates_len = 0; 2272 } 2273 if (ieee->modulation & IEEE80211_OFDM_MODULATION) { 2274 ieee->current_network.rates_ex_len = 8; 2275 2276 ieee->current_network.rates_ex[0] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_6MB; 2277 ieee->current_network.rates_ex[1] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_9MB; 2278 ieee->current_network.rates_ex[2] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_12MB; 2279 ieee->current_network.rates_ex[3] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_18MB; 2280 ieee->current_network.rates_ex[4] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB; 2281 ieee->current_network.rates_ex[5] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_36MB; 2282 ieee->current_network.rates_ex[6] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_48MB; 2283 ieee->current_network.rates_ex[7] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_54MB; 2284 2285 ieee->rate = 108; 2286 } else { 2287 ieee->current_network.rates_ex_len = 0; 2288 ieee->rate = 22; 2289 } 2290 2291 // By default, WMM function will be disabled in IBSS mode 2292 ieee->current_network.QoS_Enable = 0; 2293 ieee->SetWirelessMode(ieee->dev, IEEE_G); 2294 ieee->current_network.atim_window = 0; 2295 ieee->current_network.capability = WLAN_CAPABILITY_IBSS; 2296 if (ieee->short_slot) 2297 ieee->current_network.capability |= WLAN_CAPABILITY_SHORT_SLOT; 2298 } 2299 2300 ieee->state = IEEE80211_LINKED; 2301 2302 ieee->set_chan(ieee->dev, ieee->current_network.channel); 2303 ieee->link_change(ieee->dev); 2304 2305 notify_wx_assoc_event(ieee); 2306 2307 ieee80211_start_send_beacons(ieee); 2308 2309 if (ieee->data_hard_resume) 2310 ieee->data_hard_resume(ieee->dev); 2311 netif_carrier_on(ieee->dev); 2312 2313 mutex_unlock(&ieee->wx_mutex); 2314 } 2315 2316 inline void ieee80211_start_ibss(struct ieee80211_device *ieee) 2317 { 2318 schedule_delayed_work(&ieee->start_ibss_wq, 150); 2319 } 2320 2321 /* this is called only in user context, with wx_mutex held */ 2322 void ieee80211_start_bss(struct ieee80211_device *ieee) 2323 { 2324 unsigned long flags; 2325 // 2326 // Ref: 802.11d 11.1.3.3 2327 // STA shall not start a BSS unless properly formed Beacon frame including a Country IE. 2328 // 2329 if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) { 2330 if (!ieee->bGlobalDomain) 2331 return; 2332 } 2333 /* check if we have already found the net we 2334 * are interested in (if any). 2335 * if not (we are disassociated and we are not 2336 * in associating / authenticating phase) start the background scanning. 2337 */ 2338 ieee80211_softmac_check_all_nets(ieee); 2339 2340 /* ensure no-one start an associating process (thus setting 2341 * the ieee->state to ieee80211_ASSOCIATING) while we 2342 * have just checked it and we are going to enable scan. 2343 * The ieee80211_new_net function is always called with 2344 * lock held (from both ieee80211_softmac_check_all_nets and 2345 * the rx path), so we cannot be in the middle of such function 2346 */ 2347 spin_lock_irqsave(&ieee->lock, flags); 2348 2349 if (ieee->state == IEEE80211_NOLINK) { 2350 ieee->actscanning = true; 2351 ieee80211_start_scan(ieee); 2352 } 2353 spin_unlock_irqrestore(&ieee->lock, flags); 2354 } 2355 2356 /* called only in userspace context */ 2357 void ieee80211_disassociate(struct ieee80211_device *ieee) 2358 { 2359 netif_carrier_off(ieee->dev); 2360 if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE) 2361 ieee80211_reset_queue(ieee); 2362 2363 if (ieee->data_hard_stop) 2364 ieee->data_hard_stop(ieee->dev); 2365 if (IS_DOT11D_ENABLE(ieee)) 2366 dot11d_reset(ieee); 2367 ieee->state = IEEE80211_NOLINK; 2368 ieee->is_set_key = false; 2369 ieee->link_change(ieee->dev); 2370 //HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); 2371 notify_wx_assoc_event(ieee); 2372 } 2373 EXPORT_SYMBOL(ieee80211_disassociate); 2374 2375 static void ieee80211_associate_retry_wq(struct work_struct *work) 2376 { 2377 struct delayed_work *dwork = to_delayed_work(work); 2378 struct ieee80211_device *ieee = container_of(dwork, struct ieee80211_device, associate_retry_wq); 2379 unsigned long flags; 2380 2381 mutex_lock(&ieee->wx_mutex); 2382 if (!ieee->proto_started) 2383 goto exit; 2384 2385 if (ieee->state != IEEE80211_ASSOCIATING_RETRY) 2386 goto exit; 2387 2388 /* until we do not set the state to IEEE80211_NOLINK 2389 * there are no possibility to have someone else trying 2390 * to start an association procedure (we get here with 2391 * ieee->state = IEEE80211_ASSOCIATING). 2392 * When we set the state to IEEE80211_NOLINK it is possible 2393 * that the RX path run an attempt to associate, but 2394 * both ieee80211_softmac_check_all_nets and the 2395 * RX path works with ieee->lock held so there are no 2396 * problems. If we are still disassociated then start a scan. 2397 * the lock here is necessary to ensure no one try to start 2398 * an association procedure when we have just checked the 2399 * state and we are going to start the scan. 2400 */ 2401 ieee->state = IEEE80211_NOLINK; 2402 2403 ieee80211_softmac_check_all_nets(ieee); 2404 2405 spin_lock_irqsave(&ieee->lock, flags); 2406 2407 if (ieee->state == IEEE80211_NOLINK) 2408 ieee80211_start_scan(ieee); 2409 2410 spin_unlock_irqrestore(&ieee->lock, flags); 2411 2412 exit: 2413 mutex_unlock(&ieee->wx_mutex); 2414 } 2415 2416 struct sk_buff *ieee80211_get_beacon_(struct ieee80211_device *ieee) 2417 { 2418 u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 2419 2420 struct sk_buff *skb; 2421 struct ieee80211_probe_response *b; 2422 2423 skb = ieee80211_probe_resp(ieee, broadcast_addr); 2424 2425 if (!skb) 2426 return NULL; 2427 2428 b = (struct ieee80211_probe_response *)skb->data; 2429 b->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_BEACON); 2430 2431 return skb; 2432 } 2433 2434 struct sk_buff *ieee80211_get_beacon(struct ieee80211_device *ieee) 2435 { 2436 struct sk_buff *skb; 2437 struct ieee80211_probe_response *b; 2438 2439 skb = ieee80211_get_beacon_(ieee); 2440 if (!skb) 2441 return NULL; 2442 2443 b = (struct ieee80211_probe_response *)skb->data; 2444 b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); 2445 2446 if (ieee->seq_ctrl[0] == 0xFFF) 2447 ieee->seq_ctrl[0] = 0; 2448 else 2449 ieee->seq_ctrl[0]++; 2450 2451 return skb; 2452 } 2453 EXPORT_SYMBOL(ieee80211_get_beacon); 2454 2455 void ieee80211_softmac_stop_protocol(struct ieee80211_device *ieee) 2456 { 2457 ieee->sync_scan_hurryup = 1; 2458 mutex_lock(&ieee->wx_mutex); 2459 ieee80211_stop_protocol(ieee); 2460 mutex_unlock(&ieee->wx_mutex); 2461 } 2462 EXPORT_SYMBOL(ieee80211_softmac_stop_protocol); 2463 2464 void ieee80211_stop_protocol(struct ieee80211_device *ieee) 2465 { 2466 if (!ieee->proto_started) 2467 return; 2468 2469 ieee->proto_started = 0; 2470 2471 ieee80211_stop_send_beacons(ieee); 2472 del_timer_sync(&ieee->associate_timer); 2473 cancel_delayed_work(&ieee->associate_retry_wq); 2474 cancel_delayed_work(&ieee->start_ibss_wq); 2475 ieee80211_stop_scan(ieee); 2476 2477 ieee80211_disassociate(ieee); 2478 RemoveAllTS(ieee); //added as we disconnect from the previous BSS, Remove all TS 2479 } 2480 2481 void ieee80211_softmac_start_protocol(struct ieee80211_device *ieee) 2482 { 2483 ieee->sync_scan_hurryup = 0; 2484 mutex_lock(&ieee->wx_mutex); 2485 ieee80211_start_protocol(ieee); 2486 mutex_unlock(&ieee->wx_mutex); 2487 } 2488 EXPORT_SYMBOL(ieee80211_softmac_start_protocol); 2489 2490 void ieee80211_start_protocol(struct ieee80211_device *ieee) 2491 { 2492 short ch = 0; 2493 int i = 0; 2494 2495 if (ieee->proto_started) 2496 return; 2497 2498 ieee->proto_started = 1; 2499 2500 if (ieee->current_network.channel == 0) { 2501 do { 2502 ch++; 2503 if (ch > MAX_CHANNEL_NUMBER) 2504 return; /* no channel found */ 2505 } while (!GET_DOT11D_INFO(ieee)->channel_map[ch]); 2506 ieee->current_network.channel = ch; 2507 } 2508 2509 if (ieee->current_network.beacon_interval == 0) 2510 ieee->current_network.beacon_interval = 100; 2511 // printk("===>%s(), chan:%d\n", __func__, ieee->current_network.channel); 2512 // ieee->set_chan(ieee->dev,ieee->current_network.channel); 2513 2514 for (i = 0; i < 17; i++) { 2515 ieee->last_rxseq_num[i] = -1; 2516 ieee->last_rxfrag_num[i] = -1; 2517 ieee->last_packet_time[i] = 0; 2518 } 2519 2520 ieee->init_wmmparam_flag = 0;//reinitialize AC_xx_PARAM registers. 2521 2522 /* if the user set the MAC of the ad-hoc cell and then 2523 * switch to managed mode, shall we make sure that association 2524 * attempts does not fail just because the user provide the essid 2525 * and the nic is still checking for the AP MAC ?? 2526 */ 2527 if (ieee->iw_mode == IW_MODE_INFRA) 2528 ieee80211_start_bss(ieee); 2529 2530 else if (ieee->iw_mode == IW_MODE_ADHOC) 2531 ieee80211_start_ibss(ieee); 2532 2533 else if (ieee->iw_mode == IW_MODE_MASTER) 2534 ieee80211_start_master_bss(ieee); 2535 2536 else if (ieee->iw_mode == IW_MODE_MONITOR) 2537 ieee80211_start_monitor_mode(ieee); 2538 } 2539 2540 #define DRV_NAME "Ieee80211" 2541 void ieee80211_softmac_init(struct ieee80211_device *ieee) 2542 { 2543 int i; 2544 memset(&ieee->current_network, 0, sizeof(struct ieee80211_network)); 2545 2546 ieee->state = IEEE80211_NOLINK; 2547 ieee->sync_scan_hurryup = 0; 2548 for (i = 0; i < 5; i++) 2549 ieee->seq_ctrl[i] = 0; 2550 2551 ieee->dot11d_info = kzalloc(sizeof(struct rt_dot11d_info), GFP_KERNEL); 2552 if (!ieee->dot11d_info) 2553 IEEE80211_DEBUG(IEEE80211_DL_ERR, "can't alloc memory for DOT11D\n"); 2554 //added for AP roaming 2555 ieee->LinkDetectInfo.SlotNum = 2; 2556 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0; 2557 ieee->LinkDetectInfo.NumRecvDataInPeriod = 0; 2558 2559 ieee->assoc_id = 0; 2560 ieee->queue_stop = 0; 2561 ieee->scanning = 0; 2562 ieee->softmac_features = 0; //so IEEE2100-like driver are happy 2563 ieee->wap_set = 0; 2564 ieee->ssid_set = 0; 2565 ieee->proto_started = 0; 2566 ieee->basic_rate = IEEE80211_DEFAULT_BASIC_RATE; 2567 ieee->rate = 22; 2568 ieee->ps = IEEE80211_PS_DISABLED; 2569 ieee->sta_sleep = 0; 2570 ieee->Regdot11HTOperationalRateSet[0] = 0xff;//support MCS 0~7 2571 ieee->Regdot11HTOperationalRateSet[1] = 0xff;//support MCS 8~15 2572 ieee->Regdot11HTOperationalRateSet[4] = 0x01; 2573 //added by amy 2574 ieee->actscanning = false; 2575 ieee->beinretry = false; 2576 ieee->is_set_key = false; 2577 init_mgmt_queue(ieee); 2578 2579 ieee->sta_edca_param[0] = 0x0000A403; 2580 ieee->sta_edca_param[1] = 0x0000A427; 2581 ieee->sta_edca_param[2] = 0x005E4342; 2582 ieee->sta_edca_param[3] = 0x002F3262; 2583 ieee->aggregation = true; 2584 ieee->enable_rx_imm_BA = true; 2585 ieee->tx_pending.txb = NULL; 2586 2587 timer_setup(&ieee->associate_timer, ieee80211_associate_abort_cb, 0); 2588 2589 timer_setup(&ieee->beacon_timer, ieee80211_send_beacon_cb, 0); 2590 2591 INIT_DELAYED_WORK(&ieee->start_ibss_wq, ieee80211_start_ibss_wq); 2592 INIT_WORK(&ieee->associate_complete_wq, ieee80211_associate_complete_wq); 2593 INIT_WORK(&ieee->associate_procedure_wq, ieee80211_associate_procedure_wq); 2594 INIT_DELAYED_WORK(&ieee->softmac_scan_wq, ieee80211_softmac_scan_wq); 2595 INIT_DELAYED_WORK(&ieee->associate_retry_wq, ieee80211_associate_retry_wq); 2596 INIT_WORK(&ieee->wx_sync_scan_wq, ieee80211_wx_sync_scan_wq); 2597 2598 mutex_init(&ieee->wx_mutex); 2599 mutex_init(&ieee->scan_mutex); 2600 2601 spin_lock_init(&ieee->mgmt_tx_lock); 2602 spin_lock_init(&ieee->beacon_lock); 2603 2604 tasklet_setup(&ieee->ps_task, ieee80211_sta_ps); 2605 } 2606 2607 void ieee80211_softmac_free(struct ieee80211_device *ieee) 2608 { 2609 mutex_lock(&ieee->wx_mutex); 2610 kfree(ieee->dot11d_info); 2611 ieee->dot11d_info = NULL; 2612 del_timer_sync(&ieee->associate_timer); 2613 2614 cancel_delayed_work(&ieee->associate_retry_wq); 2615 2616 mutex_unlock(&ieee->wx_mutex); 2617 } 2618 2619 /******************************************************** 2620 * Start of WPA code. * 2621 * this is stolen from the ipw2200 driver * 2622 ********************************************************/ 2623 static int ieee80211_wpa_enable(struct ieee80211_device *ieee, int value) 2624 { 2625 /* This is called when wpa_supplicant loads and closes the driver 2626 * interface. */ 2627 printk("%s WPA\n", value ? "enabling" : "disabling"); 2628 ieee->wpa_enabled = value; 2629 return 0; 2630 } 2631 2632 static void ieee80211_wpa_assoc_frame(struct ieee80211_device *ieee, 2633 char *wpa_ie, int wpa_ie_len) 2634 { 2635 /* make sure WPA is enabled */ 2636 ieee80211_wpa_enable(ieee, 1); 2637 2638 ieee80211_disassociate(ieee); 2639 } 2640 2641 static int ieee80211_wpa_mlme(struct ieee80211_device *ieee, int command, int reason) 2642 { 2643 int ret = 0; 2644 2645 switch (command) { 2646 case IEEE_MLME_STA_DEAUTH: 2647 // silently ignore 2648 break; 2649 2650 case IEEE_MLME_STA_DISASSOC: 2651 ieee80211_disassociate(ieee); 2652 break; 2653 2654 default: 2655 printk("Unknown MLME request: %d\n", command); 2656 ret = -EOPNOTSUPP; 2657 } 2658 2659 return ret; 2660 } 2661 2662 static int ieee80211_wpa_set_wpa_ie(struct ieee80211_device *ieee, 2663 struct ieee_param *param, int plen) 2664 { 2665 u8 *buf; 2666 2667 if (param->u.wpa_ie.len > MAX_WPA_IE_LEN) 2668 return -EINVAL; 2669 2670 if (param->u.wpa_ie.len) { 2671 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len, 2672 GFP_KERNEL); 2673 if (!buf) 2674 return -ENOMEM; 2675 2676 kfree(ieee->wpa_ie); 2677 ieee->wpa_ie = buf; 2678 ieee->wpa_ie_len = param->u.wpa_ie.len; 2679 } else { 2680 kfree(ieee->wpa_ie); 2681 ieee->wpa_ie = NULL; 2682 ieee->wpa_ie_len = 0; 2683 } 2684 2685 ieee80211_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len); 2686 return 0; 2687 } 2688 2689 #define AUTH_ALG_OPEN_SYSTEM 0x1 2690 #define AUTH_ALG_SHARED_KEY 0x2 2691 2692 static int ieee80211_wpa_set_auth_algs(struct ieee80211_device *ieee, int value) 2693 { 2694 struct ieee80211_security sec = { 2695 .flags = SEC_AUTH_MODE, 2696 }; 2697 2698 if (value & AUTH_ALG_SHARED_KEY) { 2699 sec.auth_mode = WLAN_AUTH_SHARED_KEY; 2700 ieee->open_wep = 0; 2701 ieee->auth_mode = 1; 2702 } else if (value & AUTH_ALG_OPEN_SYSTEM) { 2703 sec.auth_mode = WLAN_AUTH_OPEN; 2704 ieee->open_wep = 1; 2705 ieee->auth_mode = 0; 2706 } else if (value & IW_AUTH_ALG_LEAP) { 2707 sec.auth_mode = WLAN_AUTH_LEAP; 2708 ieee->open_wep = 1; 2709 ieee->auth_mode = 2; 2710 } 2711 2712 if (ieee->set_security) 2713 ieee->set_security(ieee->dev, &sec); 2714 //else 2715 // ret = -EOPNOTSUPP; 2716 2717 return 0; 2718 } 2719 2720 static int ieee80211_wpa_set_param(struct ieee80211_device *ieee, u8 name, u32 value) 2721 { 2722 int ret = 0; 2723 unsigned long flags; 2724 2725 switch (name) { 2726 case IEEE_PARAM_WPA_ENABLED: 2727 ret = ieee80211_wpa_enable(ieee, value); 2728 break; 2729 2730 case IEEE_PARAM_TKIP_COUNTERMEASURES: 2731 ieee->tkip_countermeasures = value; 2732 break; 2733 2734 case IEEE_PARAM_DROP_UNENCRYPTED: { 2735 /* HACK: 2736 * 2737 * wpa_supplicant calls set_wpa_enabled when the driver 2738 * is loaded and unloaded, regardless of if WPA is being 2739 * used. No other calls are made which can be used to 2740 * determine if encryption will be used or not prior to 2741 * association being expected. If encryption is not being 2742 * used, drop_unencrypted is set to false, else true -- we 2743 * can use this to determine if the CAP_PRIVACY_ON bit should 2744 * be set. 2745 */ 2746 struct ieee80211_security sec = { 2747 .flags = SEC_ENABLED, 2748 .enabled = value, 2749 }; 2750 ieee->drop_unencrypted = value; 2751 /* We only change SEC_LEVEL for open mode. Others 2752 * are set by ipw_wpa_set_encryption. 2753 */ 2754 if (!value) { 2755 sec.flags |= SEC_LEVEL; 2756 sec.level = SEC_LEVEL_0; 2757 } else { 2758 sec.flags |= SEC_LEVEL; 2759 sec.level = SEC_LEVEL_1; 2760 } 2761 if (ieee->set_security) 2762 ieee->set_security(ieee->dev, &sec); 2763 break; 2764 } 2765 2766 case IEEE_PARAM_PRIVACY_INVOKED: 2767 ieee->privacy_invoked = value; 2768 break; 2769 2770 case IEEE_PARAM_AUTH_ALGS: 2771 ret = ieee80211_wpa_set_auth_algs(ieee, value); 2772 break; 2773 2774 case IEEE_PARAM_IEEE_802_1X: 2775 ieee->ieee802_1x = value; 2776 break; 2777 case IEEE_PARAM_WPAX_SELECT: 2778 // added for WPA2 mixed mode 2779 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags); 2780 ieee->wpax_type_set = 1; 2781 ieee->wpax_type_notify = value; 2782 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags); 2783 break; 2784 2785 default: 2786 printk("Unknown WPA param: %d\n", name); 2787 ret = -EOPNOTSUPP; 2788 } 2789 2790 return ret; 2791 } 2792 2793 /* implementation borrowed from hostap driver */ 2794 static int ieee80211_wpa_set_encryption(struct ieee80211_device *ieee, 2795 struct ieee_param *param, int param_len) 2796 { 2797 int ret = 0; 2798 const char *module = NULL; 2799 2800 struct ieee80211_crypto_ops *ops = NULL; 2801 struct ieee80211_crypt_data **crypt; 2802 2803 struct ieee80211_security sec = { 2804 .flags = 0, 2805 }; 2806 2807 param->u.crypt.err = 0; 2808 param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0'; 2809 2810 if (param_len != 2811 (int)((char *)param->u.crypt.key - (char *)param) + 2812 param->u.crypt.key_len) { 2813 printk("Len mismatch %d, %d\n", param_len, 2814 param->u.crypt.key_len); 2815 return -EINVAL; 2816 } 2817 if (is_broadcast_ether_addr(param->sta_addr)) { 2818 if (param->u.crypt.idx >= WEP_KEYS) 2819 return -EINVAL; 2820 crypt = &ieee->crypt[param->u.crypt.idx]; 2821 } else { 2822 return -EINVAL; 2823 } 2824 2825 if (strcmp(param->u.crypt.alg, "none") == 0) { 2826 if (crypt) { 2827 sec.enabled = 0; 2828 // FIXME FIXME 2829 //sec.encrypt = 0; 2830 sec.level = SEC_LEVEL_0; 2831 sec.flags |= SEC_ENABLED | SEC_LEVEL; 2832 ieee80211_crypt_delayed_deinit(ieee, crypt); 2833 } 2834 goto done; 2835 } 2836 sec.enabled = 1; 2837 // FIXME FIXME 2838 // sec.encrypt = 1; 2839 sec.flags |= SEC_ENABLED; 2840 2841 /* IPW HW cannot build TKIP MIC, host decryption still needed. */ 2842 if (!(ieee->host_encrypt || ieee->host_decrypt) && 2843 strcmp(param->u.crypt.alg, "TKIP")) 2844 goto skip_host_crypt; 2845 2846 //set WEP40 first, it will be modified according to WEP104 or WEP40 at other place 2847 if (!strcmp(param->u.crypt.alg, "WEP")) 2848 module = "ieee80211_crypt_wep"; 2849 else if (!strcmp(param->u.crypt.alg, "TKIP")) 2850 module = "ieee80211_crypt_tkip"; 2851 else if (!strcmp(param->u.crypt.alg, "CCMP")) 2852 module = "ieee80211_crypt_ccmp"; 2853 if (module) 2854 ops = try_then_request_module(ieee80211_get_crypto_ops(param->u.crypt.alg), 2855 module); 2856 if (!ops) { 2857 printk("unknown crypto alg '%s'\n", param->u.crypt.alg); 2858 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG; 2859 ret = -EINVAL; 2860 goto done; 2861 } 2862 2863 if (!*crypt || (*crypt)->ops != ops) { 2864 struct ieee80211_crypt_data *new_crypt; 2865 2866 ieee80211_crypt_delayed_deinit(ieee, crypt); 2867 2868 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL); 2869 if (!new_crypt) { 2870 ret = -ENOMEM; 2871 goto done; 2872 } 2873 new_crypt->ops = ops; 2874 if (new_crypt->ops && try_module_get(new_crypt->ops->owner)) 2875 new_crypt->priv = 2876 new_crypt->ops->init(param->u.crypt.idx); 2877 2878 if (!new_crypt->priv) { 2879 kfree(new_crypt); 2880 param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED; 2881 ret = -EINVAL; 2882 goto done; 2883 } 2884 2885 *crypt = new_crypt; 2886 } 2887 2888 if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key && 2889 (*crypt)->ops->set_key(param->u.crypt.key, 2890 param->u.crypt.key_len, param->u.crypt.seq, 2891 (*crypt)->priv) < 0) { 2892 printk("key setting failed\n"); 2893 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED; 2894 ret = -EINVAL; 2895 goto done; 2896 } 2897 2898 skip_host_crypt: 2899 if (param->u.crypt.set_tx) { 2900 ieee->tx_keyidx = param->u.crypt.idx; 2901 sec.active_key = param->u.crypt.idx; 2902 sec.flags |= SEC_ACTIVE_KEY; 2903 } else { 2904 sec.flags &= ~SEC_ACTIVE_KEY; 2905 } 2906 memcpy(sec.keys[param->u.crypt.idx], 2907 param->u.crypt.key, 2908 param->u.crypt.key_len); 2909 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len; 2910 sec.flags |= (1 << param->u.crypt.idx); 2911 2912 if (strcmp(param->u.crypt.alg, "WEP") == 0) { 2913 sec.flags |= SEC_LEVEL; 2914 sec.level = SEC_LEVEL_1; 2915 } else if (strcmp(param->u.crypt.alg, "TKIP") == 0) { 2916 sec.flags |= SEC_LEVEL; 2917 sec.level = SEC_LEVEL_2; 2918 } else if (strcmp(param->u.crypt.alg, "CCMP") == 0) { 2919 sec.flags |= SEC_LEVEL; 2920 sec.level = SEC_LEVEL_3; 2921 } 2922 done: 2923 if (ieee->set_security) 2924 ieee->set_security(ieee->dev, &sec); 2925 2926 /* Do not reset port if card is in Managed mode since resetting will 2927 * generate new IEEE 802.11 authentication which may end up in looping 2928 * with IEEE 802.1X. If your hardware requires a reset after WEP 2929 * configuration (for example... Prism2), implement the reset_port in 2930 * the callbacks structures used to initialize the 802.11 stack. */ 2931 if (ieee->reset_on_keychange && 2932 ieee->iw_mode != IW_MODE_INFRA && 2933 ieee->reset_port && 2934 ieee->reset_port(ieee->dev)) { 2935 printk("reset_port failed\n"); 2936 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED; 2937 return -EINVAL; 2938 } 2939 2940 return ret; 2941 } 2942 2943 static inline struct sk_buff *ieee80211_disassociate_skb(struct ieee80211_network *beacon, 2944 struct ieee80211_device *ieee, 2945 u8 asRsn) 2946 { 2947 struct sk_buff *skb; 2948 struct ieee80211_disassoc *disass; 2949 2950 skb = dev_alloc_skb(sizeof(struct ieee80211_disassoc)); 2951 if (!skb) 2952 return NULL; 2953 2954 disass = skb_put(skb, sizeof(struct ieee80211_disassoc)); 2955 disass->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_DISASSOC); 2956 disass->header.duration_id = 0; 2957 2958 memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN); 2959 memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN); 2960 memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN); 2961 2962 disass->reason = cpu_to_le16(asRsn); 2963 return skb; 2964 } 2965 2966 void 2967 SendDisassociation(struct ieee80211_device *ieee, 2968 u8 *asSta, 2969 u8 asRsn 2970 ) 2971 { 2972 struct ieee80211_network *beacon = &ieee->current_network; 2973 struct sk_buff *skb; 2974 2975 skb = ieee80211_disassociate_skb(beacon, ieee, asRsn); 2976 if (skb) { 2977 softmac_mgmt_xmit(skb, ieee); 2978 //dev_kfree_skb_any(skb);//edit by thomas 2979 } 2980 } 2981 EXPORT_SYMBOL(SendDisassociation); 2982 2983 int ieee80211_wpa_supplicant_ioctl(struct ieee80211_device *ieee, struct iw_point *p) 2984 { 2985 struct ieee_param *param; 2986 int ret = 0; 2987 2988 mutex_lock(&ieee->wx_mutex); 2989 //IEEE_DEBUG_INFO("wpa_supplicant: len=%d\n", p->length); 2990 2991 if (p->length < sizeof(struct ieee_param) || !p->pointer) { 2992 ret = -EINVAL; 2993 goto out; 2994 } 2995 2996 param = memdup_user(p->pointer, p->length); 2997 if (IS_ERR(param)) { 2998 ret = PTR_ERR(param); 2999 goto out; 3000 } 3001 3002 switch (param->cmd) { 3003 case IEEE_CMD_SET_WPA_PARAM: 3004 ret = ieee80211_wpa_set_param(ieee, param->u.wpa_param.name, 3005 param->u.wpa_param.value); 3006 break; 3007 3008 case IEEE_CMD_SET_WPA_IE: 3009 ret = ieee80211_wpa_set_wpa_ie(ieee, param, p->length); 3010 break; 3011 3012 case IEEE_CMD_SET_ENCRYPTION: 3013 ret = ieee80211_wpa_set_encryption(ieee, param, p->length); 3014 break; 3015 3016 case IEEE_CMD_MLME: 3017 ret = ieee80211_wpa_mlme(ieee, param->u.mlme.command, 3018 param->u.mlme.reason_code); 3019 break; 3020 3021 default: 3022 printk("Unknown WPA supplicant request: %d\n", param->cmd); 3023 ret = -EOPNOTSUPP; 3024 break; 3025 } 3026 3027 if (ret == 0 && copy_to_user(p->pointer, param, p->length)) 3028 ret = -EFAULT; 3029 3030 kfree(param); 3031 out: 3032 mutex_unlock(&ieee->wx_mutex); 3033 3034 return ret; 3035 } 3036 EXPORT_SYMBOL(ieee80211_wpa_supplicant_ioctl); 3037 3038 void notify_wx_assoc_event(struct ieee80211_device *ieee) 3039 { 3040 union iwreq_data wrqu; 3041 3042 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 3043 if (ieee->state == IEEE80211_LINKED) 3044 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid, ETH_ALEN); 3045 else 3046 eth_zero_addr(wrqu.ap_addr.sa_data); 3047 wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL); 3048 } 3049 EXPORT_SYMBOL(notify_wx_assoc_event); 3050