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[mirror_ubuntu-artful-kernel.git] / drivers / staging / rtl8192e / rtllib_softmac.c
1 /* IEEE 802.11 SoftMAC layer
2 * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com>
3 *
4 * Mostly extracted from the rtl8180-sa2400 driver for the
5 * in-kernel generic ieee802.11 stack.
6 *
7 * Few lines might be stolen from other part of the rtllib
8 * stack. Copyright who own it's copyright
9 *
10 * WPA code stolen from the ipw2200 driver.
11 * Copyright who own it's copyright.
12 *
13 * released under the GPL
14 */
15
16
17 #include "rtllib.h"
18
19 #include <linux/random.h>
20 #include <linux/delay.h>
21 #include <linux/uaccess.h>
22 #include <linux/etherdevice.h>
23 #include <linux/ieee80211.h>
24 #include "dot11d.h"
25
26 static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl);
27
28
29 static short rtllib_is_54g(struct rtllib_network *net)
30 {
31 return (net->rates_ex_len > 0) || (net->rates_len > 4);
32 }
33
34 /* returns the total length needed for placing the RATE MFIE
35 * tag and the EXTENDED RATE MFIE tag if needed.
36 * It encludes two bytes per tag for the tag itself and its len
37 */
38 static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
39 {
40 unsigned int rate_len = 0;
41
42 if (ieee->modulation & RTLLIB_CCK_MODULATION)
43 rate_len = RTLLIB_CCK_RATE_LEN + 2;
44
45 if (ieee->modulation & RTLLIB_OFDM_MODULATION)
46
47 rate_len += RTLLIB_OFDM_RATE_LEN + 2;
48
49 return rate_len;
50 }
51
52 /* place the MFIE rate, tag to the memory (double) pointed.
53 * Then it updates the pointer so that
54 * it points after the new MFIE tag added.
55 */
56 static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
57 {
58 u8 *tag = *tag_p;
59
60 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
61 *tag++ = MFIE_TYPE_RATES;
62 *tag++ = 4;
63 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
64 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
65 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
66 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
67 }
68
69 /* We may add an option for custom rates that specific HW
70 * might support
71 */
72 *tag_p = tag;
73 }
74
75 static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p)
76 {
77 u8 *tag = *tag_p;
78
79 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
80 *tag++ = MFIE_TYPE_RATES_EX;
81 *tag++ = 8;
82 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB;
83 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB;
84 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB;
85 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB;
86 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB;
87 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB;
88 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB;
89 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB;
90 }
91 /* We may add an option for custom rates that specific HW might
92 * support
93 */
94 *tag_p = tag;
95 }
96
97 static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
98 {
99 u8 *tag = *tag_p;
100
101 *tag++ = MFIE_TYPE_GENERIC;
102 *tag++ = 7;
103 *tag++ = 0x00;
104 *tag++ = 0x50;
105 *tag++ = 0xf2;
106 *tag++ = 0x02;
107 *tag++ = 0x00;
108 *tag++ = 0x01;
109 *tag++ = MAX_SP_Len;
110 *tag_p = tag;
111 }
112
113 static void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
114 {
115 u8 *tag = *tag_p;
116
117 *tag++ = MFIE_TYPE_GENERIC;
118 *tag++ = 7;
119 *tag++ = 0x00;
120 *tag++ = 0xe0;
121 *tag++ = 0x4c;
122 *tag++ = 0x01;
123 *tag++ = 0x02;
124 *tag++ = 0x11;
125 *tag++ = 0x00;
126
127 *tag_p = tag;
128 netdev_alert(ieee->dev, "This is enable turbo mode IE process\n");
129 }
130
131 static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
132 {
133 int nh;
134
135 nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
136
137 /* if the queue is full but we have newer frames then
138 * just overwrites the oldest.
139 *
140 * if (nh == ieee->mgmt_queue_tail)
141 * return -1;
142 */
143 ieee->mgmt_queue_head = nh;
144 ieee->mgmt_queue_ring[nh] = skb;
145
146 }
147
148 static void init_mgmt_queue(struct rtllib_device *ieee)
149 {
150 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
151 }
152
153
154 u8
155 MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
156 {
157 u16 i;
158 u8 QueryRate = 0;
159 u8 BasicRate;
160
161
162 for (i = 0; i < ieee->current_network.rates_len; i++) {
163 BasicRate = ieee->current_network.rates[i]&0x7F;
164 if (!rtllib_is_cck_rate(BasicRate)) {
165 if (QueryRate == 0) {
166 QueryRate = BasicRate;
167 } else {
168 if (BasicRate < QueryRate)
169 QueryRate = BasicRate;
170 }
171 }
172 }
173
174 if (QueryRate == 0) {
175 QueryRate = 12;
176 netdev_info(ieee->dev, "No BasicRate found!!\n");
177 }
178 return QueryRate;
179 }
180
181 static u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
182 {
183 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
184 u8 rate;
185
186 if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
187 rate = 0x0c;
188 else
189 rate = ieee->basic_rate & 0x7f;
190
191 if (rate == 0) {
192 if (ieee->mode == IEEE_A ||
193 ieee->mode == IEEE_N_5G ||
194 (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
195 rate = 0x0c;
196 else
197 rate = 0x02;
198 }
199
200 return rate;
201 }
202
203 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
204 {
205 unsigned long flags;
206 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
207 struct rtllib_hdr_3addr *header =
208 (struct rtllib_hdr_3addr *) skb->data;
209
210 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
211
212 spin_lock_irqsave(&ieee->lock, flags);
213
214 /* called with 2nd param 0, no mgmt lock required */
215 rtllib_sta_wakeup(ieee, 0);
216
217 if (le16_to_cpu(header->frame_ctl) == RTLLIB_STYPE_BEACON)
218 tcb_desc->queue_index = BEACON_QUEUE;
219 else
220 tcb_desc->queue_index = MGNT_QUEUE;
221
222 if (ieee->disable_mgnt_queue)
223 tcb_desc->queue_index = HIGH_QUEUE;
224
225 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
226 tcb_desc->RATRIndex = 7;
227 tcb_desc->bTxDisableRateFallBack = 1;
228 tcb_desc->bTxUseDriverAssingedRate = 1;
229 if (single) {
230 if (ieee->queue_stop) {
231 enqueue_mgmt(ieee, skb);
232 } else {
233 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
234
235 if (ieee->seq_ctrl[0] == 0xFFF)
236 ieee->seq_ctrl[0] = 0;
237 else
238 ieee->seq_ctrl[0]++;
239
240 /* avoid watchdog triggers */
241 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
242 ieee->basic_rate);
243 }
244
245 spin_unlock_irqrestore(&ieee->lock, flags);
246 } else {
247 spin_unlock_irqrestore(&ieee->lock, flags);
248 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
249
250 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
251
252 if (ieee->seq_ctrl[0] == 0xFFF)
253 ieee->seq_ctrl[0] = 0;
254 else
255 ieee->seq_ctrl[0]++;
256
257 /* check whether the managed packet queued greater than 5 */
258 if (!ieee->check_nic_enough_desc(ieee->dev,
259 tcb_desc->queue_index) ||
260 skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) ||
261 ieee->queue_stop) {
262 /* insert the skb packet to the management queue
263 *
264 * as for the completion function, it does not need
265 * to check it any more.
266 */
267 netdev_info(ieee->dev,
268 "%s():insert to waitqueue, queue_index:%d!\n",
269 __func__, tcb_desc->queue_index);
270 skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
271 skb);
272 } else {
273 ieee->softmac_hard_start_xmit(skb, ieee->dev);
274 }
275 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
276 }
277 }
278
279 static inline void
280 softmac_ps_mgmt_xmit(struct sk_buff *skb,
281 struct rtllib_device *ieee)
282 {
283 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
284 struct rtllib_hdr_3addr *header =
285 (struct rtllib_hdr_3addr *) skb->data;
286 u16 fc, type, stype;
287 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
288
289 fc = le16_to_cpu(header->frame_ctl);
290 type = WLAN_FC_GET_TYPE(fc);
291 stype = WLAN_FC_GET_STYPE(fc);
292
293
294 if (stype != RTLLIB_STYPE_PSPOLL)
295 tcb_desc->queue_index = MGNT_QUEUE;
296 else
297 tcb_desc->queue_index = HIGH_QUEUE;
298
299 if (ieee->disable_mgnt_queue)
300 tcb_desc->queue_index = HIGH_QUEUE;
301
302
303 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
304 tcb_desc->RATRIndex = 7;
305 tcb_desc->bTxDisableRateFallBack = 1;
306 tcb_desc->bTxUseDriverAssingedRate = 1;
307 if (single) {
308 if (type != RTLLIB_FTYPE_CTL) {
309 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
310
311 if (ieee->seq_ctrl[0] == 0xFFF)
312 ieee->seq_ctrl[0] = 0;
313 else
314 ieee->seq_ctrl[0]++;
315
316 }
317 /* avoid watchdog triggers */
318 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
319 ieee->basic_rate);
320
321 } else {
322 if (type != RTLLIB_FTYPE_CTL) {
323 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
324
325 if (ieee->seq_ctrl[0] == 0xFFF)
326 ieee->seq_ctrl[0] = 0;
327 else
328 ieee->seq_ctrl[0]++;
329 }
330 ieee->softmac_hard_start_xmit(skb, ieee->dev);
331
332 }
333 }
334
335 static inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
336 {
337 unsigned int len, rate_len;
338 u8 *tag;
339 struct sk_buff *skb;
340 struct rtllib_probe_request *req;
341
342 len = ieee->current_network.ssid_len;
343
344 rate_len = rtllib_MFIE_rate_len(ieee);
345
346 skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
347 2 + len + rate_len + ieee->tx_headroom);
348
349 if (!skb)
350 return NULL;
351
352 skb_reserve(skb, ieee->tx_headroom);
353
354 req = skb_put(skb, sizeof(struct rtllib_probe_request));
355 req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
356 req->header.duration_id = 0;
357
358 eth_broadcast_addr(req->header.addr1);
359 ether_addr_copy(req->header.addr2, ieee->dev->dev_addr);
360 eth_broadcast_addr(req->header.addr3);
361
362 tag = skb_put(skb, len + 2 + rate_len);
363
364 *tag++ = MFIE_TYPE_SSID;
365 *tag++ = len;
366 memcpy(tag, ieee->current_network.ssid, len);
367 tag += len;
368
369 rtllib_MFIE_Brate(ieee, &tag);
370 rtllib_MFIE_Grate(ieee, &tag);
371
372 return skb;
373 }
374
375 static struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
376
377 static void rtllib_send_beacon(struct rtllib_device *ieee)
378 {
379 struct sk_buff *skb;
380
381 if (!ieee->ieee_up)
382 return;
383 skb = rtllib_get_beacon_(ieee);
384
385 if (skb) {
386 softmac_mgmt_xmit(skb, ieee);
387 ieee->softmac_stats.tx_beacons++;
388 }
389
390 if (ieee->beacon_txing && ieee->ieee_up)
391 mod_timer(&ieee->beacon_timer, jiffies +
392 (msecs_to_jiffies(ieee->current_network.beacon_interval - 5)));
393 }
394
395
396 static void rtllib_send_beacon_cb(unsigned long _ieee)
397 {
398 struct rtllib_device *ieee =
399 (struct rtllib_device *) _ieee;
400 unsigned long flags;
401
402 spin_lock_irqsave(&ieee->beacon_lock, flags);
403 rtllib_send_beacon(ieee);
404 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
405 }
406
407 /* Enables network monitor mode, all rx packets will be received. */
408 void rtllib_EnableNetMonitorMode(struct net_device *dev,
409 bool bInitState)
410 {
411 struct rtllib_device *ieee = netdev_priv_rsl(dev);
412
413 netdev_info(dev, "========>Enter Monitor Mode\n");
414
415 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
416 }
417
418
419 /* Disables network monitor mode. Only packets destinated to
420 * us will be received.
421 */
422 void rtllib_DisableNetMonitorMode(struct net_device *dev,
423 bool bInitState)
424 {
425 struct rtllib_device *ieee = netdev_priv_rsl(dev);
426
427 netdev_info(dev, "========>Exit Monitor Mode\n");
428
429 ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
430 }
431
432
433 /* Enables the specialized promiscuous mode required by Intel.
434 * In this mode, Intel intends to hear traffics from/to other STAs in the
435 * same BSS. Therefore we don't have to disable checking BSSID and we only need
436 * to allow all dest. BUT: if we enable checking BSSID then we can't recv
437 * packets from other STA.
438 */
439 void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
440 bool bInitState)
441 {
442 bool bFilterOutNonAssociatedBSSID = false;
443
444 struct rtllib_device *ieee = netdev_priv_rsl(dev);
445
446 netdev_info(dev, "========>Enter Intel Promiscuous Mode\n");
447
448 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
449 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
450 (u8 *)&bFilterOutNonAssociatedBSSID);
451
452 ieee->bNetPromiscuousMode = true;
453 }
454 EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode);
455
456
457 /* Disables the specialized promiscuous mode required by Intel.
458 * See MgntEnableIntelPromiscuousMode for detail.
459 */
460 void rtllib_DisableIntelPromiscuousMode(struct net_device *dev,
461 bool bInitState)
462 {
463 bool bFilterOutNonAssociatedBSSID = true;
464
465 struct rtllib_device *ieee = netdev_priv_rsl(dev);
466
467 netdev_info(dev, "========>Exit Intel Promiscuous Mode\n");
468
469 ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
470 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
471 (u8 *)&bFilterOutNonAssociatedBSSID);
472
473 ieee->bNetPromiscuousMode = false;
474 }
475 EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode);
476
477 static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh)
478 {
479 struct sk_buff *skb;
480
481 skb = rtllib_probe_req(ieee);
482 if (skb) {
483 softmac_mgmt_xmit(skb, ieee);
484 ieee->softmac_stats.tx_probe_rq++;
485 }
486 }
487
488
489 static void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh)
490 {
491 if (ieee->active_scan && (ieee->softmac_features &
492 IEEE_SOFTMAC_PROBERQ)) {
493 rtllib_send_probe(ieee, 0);
494 rtllib_send_probe(ieee, 0);
495 }
496 }
497
498 static void rtllib_update_active_chan_map(struct rtllib_device *ieee)
499 {
500 memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map,
501 MAX_CHANNEL_NUMBER+1);
502 }
503
504 /* this performs syncro scan blocking the caller until all channels
505 * in the allowed channel map has been checked.
506 */
507 static void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
508 {
509 union iwreq_data wrqu;
510 short ch = 0;
511
512 rtllib_update_active_chan_map(ieee);
513
514 ieee->be_scan_inprogress = true;
515
516 mutex_lock(&ieee->scan_mutex);
517
518 while (1) {
519 do {
520 ch++;
521 if (ch > MAX_CHANNEL_NUMBER)
522 goto out; /* scan completed */
523 } while (!ieee->active_channel_map[ch]);
524
525 /* this function can be called in two situations
526 * 1- We have switched to ad-hoc mode and we are
527 * performing a complete syncro scan before conclude
528 * there are no interesting cell and to create a
529 * new one. In this case the link state is
530 * RTLLIB_NOLINK until we found an interesting cell.
531 * If so the ieee8021_new_net, called by the RX path
532 * will set the state to RTLLIB_LINKED, so we stop
533 * scanning
534 * 2- We are linked and the root uses run iwlist scan.
535 * So we switch to RTLLIB_LINKED_SCANNING to remember
536 * that we are still logically linked (not interested in
537 * new network events, despite for updating the net list,
538 * but we are temporarly 'unlinked' as the driver shall
539 * not filter RX frames and the channel is changing.
540 * So the only situation in which are interested is to check
541 * if the state become LINKED because of the #1 situation
542 */
543
544 if (ieee->state == RTLLIB_LINKED)
545 goto out;
546 if (ieee->sync_scan_hurryup) {
547 netdev_info(ieee->dev,
548 "============>sync_scan_hurryup out\n");
549 goto out;
550 }
551
552 ieee->set_chan(ieee->dev, ch);
553 if (ieee->active_channel_map[ch] == 1)
554 rtllib_send_probe_requests(ieee, 0);
555
556 /* this prevent excessive time wait when we
557 * need to wait for a syncro scan to end..
558 */
559 msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME);
560 }
561 out:
562 ieee->actscanning = false;
563 ieee->sync_scan_hurryup = 0;
564
565 if (ieee->state >= RTLLIB_LINKED) {
566 if (IS_DOT11D_ENABLE(ieee))
567 DOT11D_ScanComplete(ieee);
568 }
569 mutex_unlock(&ieee->scan_mutex);
570
571 ieee->be_scan_inprogress = false;
572
573 memset(&wrqu, 0, sizeof(wrqu));
574 wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
575 }
576
577 static void rtllib_softmac_scan_wq(void *data)
578 {
579 struct rtllib_device *ieee = container_of_dwork_rsl(data,
580 struct rtllib_device, softmac_scan_wq);
581 u8 last_channel = ieee->current_network.channel;
582
583 rtllib_update_active_chan_map(ieee);
584
585 if (!ieee->ieee_up)
586 return;
587 if (rtllib_act_scanning(ieee, true))
588 return;
589
590 mutex_lock(&ieee->scan_mutex);
591
592 if (ieee->eRFPowerState == eRfOff) {
593 netdev_info(ieee->dev,
594 "======>%s():rf state is eRfOff, return\n",
595 __func__);
596 goto out1;
597 }
598
599 do {
600 ieee->current_network.channel =
601 (ieee->current_network.channel + 1) %
602 MAX_CHANNEL_NUMBER;
603 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) {
604 if (!ieee->active_channel_map[ieee->current_network.channel])
605 ieee->current_network.channel = 6;
606 goto out; /* no good chans */
607 }
608 } while (!ieee->active_channel_map[ieee->current_network.channel]);
609
610 if (ieee->scanning_continue == 0)
611 goto out;
612
613 ieee->set_chan(ieee->dev, ieee->current_network.channel);
614
615 if (ieee->active_channel_map[ieee->current_network.channel] == 1)
616 rtllib_send_probe_requests(ieee, 0);
617
618 schedule_delayed_work(&ieee->softmac_scan_wq,
619 msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME));
620
621 mutex_unlock(&ieee->scan_mutex);
622 return;
623
624 out:
625 if (IS_DOT11D_ENABLE(ieee))
626 DOT11D_ScanComplete(ieee);
627 ieee->current_network.channel = last_channel;
628
629 out1:
630 ieee->actscanning = false;
631 ieee->scan_watch_dog = 0;
632 ieee->scanning_continue = 0;
633 mutex_unlock(&ieee->scan_mutex);
634 }
635
636
637
638 static void rtllib_beacons_start(struct rtllib_device *ieee)
639 {
640 unsigned long flags;
641
642 spin_lock_irqsave(&ieee->beacon_lock, flags);
643
644 ieee->beacon_txing = 1;
645 rtllib_send_beacon(ieee);
646
647 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
648 }
649
650 static void rtllib_beacons_stop(struct rtllib_device *ieee)
651 {
652 unsigned long flags;
653
654 spin_lock_irqsave(&ieee->beacon_lock, flags);
655
656 ieee->beacon_txing = 0;
657 del_timer_sync(&ieee->beacon_timer);
658
659 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
660
661 }
662
663
664 void rtllib_stop_send_beacons(struct rtllib_device *ieee)
665 {
666 if (ieee->stop_send_beacons)
667 ieee->stop_send_beacons(ieee->dev);
668 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
669 rtllib_beacons_stop(ieee);
670 }
671 EXPORT_SYMBOL(rtllib_stop_send_beacons);
672
673
674 void rtllib_start_send_beacons(struct rtllib_device *ieee)
675 {
676 if (ieee->start_send_beacons)
677 ieee->start_send_beacons(ieee->dev);
678 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
679 rtllib_beacons_start(ieee);
680 }
681 EXPORT_SYMBOL(rtllib_start_send_beacons);
682
683
684 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
685 {
686 mutex_lock(&ieee->scan_mutex);
687 ieee->scan_watch_dog = 0;
688 if (ieee->scanning_continue == 1) {
689 ieee->scanning_continue = 0;
690 ieee->actscanning = false;
691
692 cancel_delayed_work_sync(&ieee->softmac_scan_wq);
693 }
694
695 mutex_unlock(&ieee->scan_mutex);
696 }
697
698 void rtllib_stop_scan(struct rtllib_device *ieee)
699 {
700 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
701 rtllib_softmac_stop_scan(ieee);
702 } else {
703 if (ieee->rtllib_stop_hw_scan)
704 ieee->rtllib_stop_hw_scan(ieee->dev);
705 }
706 }
707 EXPORT_SYMBOL(rtllib_stop_scan);
708
709 void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
710 {
711 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
712 ieee->sync_scan_hurryup = 1;
713 } else {
714 if (ieee->rtllib_stop_hw_scan)
715 ieee->rtllib_stop_hw_scan(ieee->dev);
716 }
717 }
718 EXPORT_SYMBOL(rtllib_stop_scan_syncro);
719
720 bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
721 {
722 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
723 if (sync_scan)
724 return ieee->be_scan_inprogress;
725 else
726 return ieee->actscanning || ieee->be_scan_inprogress;
727 } else {
728 return test_bit(STATUS_SCANNING, &ieee->status);
729 }
730 }
731 EXPORT_SYMBOL(rtllib_act_scanning);
732
733 /* called with ieee->lock held */
734 static void rtllib_start_scan(struct rtllib_device *ieee)
735 {
736 RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
737 if (ieee->rtllib_ips_leave_wq != NULL)
738 ieee->rtllib_ips_leave_wq(ieee->dev);
739
740 if (IS_DOT11D_ENABLE(ieee)) {
741 if (IS_COUNTRY_IE_VALID(ieee))
742 RESET_CIE_WATCHDOG(ieee);
743 }
744 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
745 if (ieee->scanning_continue == 0) {
746 ieee->actscanning = true;
747 ieee->scanning_continue = 1;
748 schedule_delayed_work(&ieee->softmac_scan_wq, 0);
749 }
750 } else {
751 if (ieee->rtllib_start_hw_scan)
752 ieee->rtllib_start_hw_scan(ieee->dev);
753 }
754 }
755
756 /* called with wx_mutex held */
757 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
758 {
759 if (IS_DOT11D_ENABLE(ieee)) {
760 if (IS_COUNTRY_IE_VALID(ieee))
761 RESET_CIE_WATCHDOG(ieee);
762 }
763 ieee->sync_scan_hurryup = 0;
764 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
765 rtllib_softmac_scan_syncro(ieee, is_mesh);
766 } else {
767 if (ieee->rtllib_start_hw_scan)
768 ieee->rtllib_start_hw_scan(ieee->dev);
769 }
770 }
771 EXPORT_SYMBOL(rtllib_start_scan_syncro);
772
773 static inline struct sk_buff *
774 rtllib_authentication_req(struct rtllib_network *beacon,
775 struct rtllib_device *ieee,
776 int challengelen, u8 *daddr)
777 {
778 struct sk_buff *skb;
779 struct rtllib_authentication *auth;
780 int len;
781
782 len = sizeof(struct rtllib_authentication) + challengelen +
783 ieee->tx_headroom + 4;
784 skb = dev_alloc_skb(len);
785
786 if (!skb)
787 return NULL;
788
789 skb_reserve(skb, ieee->tx_headroom);
790
791 auth = skb_put(skb, sizeof(struct rtllib_authentication));
792
793 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
794 if (challengelen)
795 auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP);
796
797 auth->header.duration_id = cpu_to_le16(0x013a);
798 ether_addr_copy(auth->header.addr1, beacon->bssid);
799 ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
800 ether_addr_copy(auth->header.addr3, beacon->bssid);
801 if (ieee->auth_mode == 0)
802 auth->algorithm = WLAN_AUTH_OPEN;
803 else if (ieee->auth_mode == 1)
804 auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY);
805 else if (ieee->auth_mode == 2)
806 auth->algorithm = WLAN_AUTH_OPEN;
807 auth->transaction = cpu_to_le16(ieee->associate_seq);
808 ieee->associate_seq++;
809
810 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
811
812 return skb;
813 }
814
815 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee,
816 const u8 *dest)
817 {
818 u8 *tag;
819 int beacon_size;
820 struct rtllib_probe_response *beacon_buf;
821 struct sk_buff *skb = NULL;
822 int encrypt;
823 int atim_len, erp_len;
824 struct lib80211_crypt_data *crypt;
825
826 char *ssid = ieee->current_network.ssid;
827 int ssid_len = ieee->current_network.ssid_len;
828 int rate_len = ieee->current_network.rates_len+2;
829 int rate_ex_len = ieee->current_network.rates_ex_len;
830 int wpa_ie_len = ieee->wpa_ie_len;
831 u8 erpinfo_content = 0;
832
833 u8 *tmp_ht_cap_buf = NULL;
834 u8 tmp_ht_cap_len = 0;
835 u8 *tmp_ht_info_buf = NULL;
836 u8 tmp_ht_info_len = 0;
837 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
838 u8 *tmp_generic_ie_buf = NULL;
839 u8 tmp_generic_ie_len = 0;
840
841 if (rate_ex_len > 0)
842 rate_ex_len += 2;
843
844 if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
845 atim_len = 4;
846 else
847 atim_len = 0;
848
849 if ((ieee->current_network.mode == IEEE_G) ||
850 (ieee->current_network.mode == IEEE_N_24G &&
851 ieee->pHTInfo->bCurSuppCCK)) {
852 erp_len = 3;
853 erpinfo_content = 0;
854 if (ieee->current_network.buseprotection)
855 erpinfo_content |= ERP_UseProtection;
856 } else
857 erp_len = 0;
858
859 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
860 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
861 ((strcmp(crypt->ops->name, "R-WEP") == 0 || wpa_ie_len));
862 if (ieee->pHTInfo->bCurrentHTSupport) {
863 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
864 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
865 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
866 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
867 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
868 &tmp_ht_cap_len, encrypt, false);
869 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
870 encrypt);
871
872 if (pHTInfo->bRegRT2RTAggregation) {
873 tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
874 tmp_generic_ie_len =
875 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
876 HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
877 &tmp_generic_ie_len);
878 }
879 }
880
881 beacon_size = sizeof(struct rtllib_probe_response)+2+
882 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
883 + wpa_ie_len + ieee->tx_headroom;
884 skb = dev_alloc_skb(beacon_size);
885 if (!skb)
886 return NULL;
887
888 skb_reserve(skb, ieee->tx_headroom);
889
890 beacon_buf = skb_put(skb, (beacon_size - ieee->tx_headroom));
891 ether_addr_copy(beacon_buf->header.addr1, dest);
892 ether_addr_copy(beacon_buf->header.addr2, ieee->dev->dev_addr);
893 ether_addr_copy(beacon_buf->header.addr3, ieee->current_network.bssid);
894
895 beacon_buf->header.duration_id = 0;
896 beacon_buf->beacon_interval =
897 cpu_to_le16(ieee->current_network.beacon_interval);
898 beacon_buf->capability =
899 cpu_to_le16(ieee->current_network.capability &
900 WLAN_CAPABILITY_IBSS);
901 beacon_buf->capability |=
902 cpu_to_le16(ieee->current_network.capability &
903 WLAN_CAPABILITY_SHORT_PREAMBLE);
904
905 if (ieee->short_slot && (ieee->current_network.capability &
906 WLAN_CAPABILITY_SHORT_SLOT_TIME))
907 beacon_buf->capability |=
908 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
909
910 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
911 if (encrypt)
912 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
913
914
915 beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
916 beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
917 beacon_buf->info_element[0].len = ssid_len;
918
919 tag = (u8 *) beacon_buf->info_element[0].data;
920
921 memcpy(tag, ssid, ssid_len);
922
923 tag += ssid_len;
924
925 *(tag++) = MFIE_TYPE_RATES;
926 *(tag++) = rate_len-2;
927 memcpy(tag, ieee->current_network.rates, rate_len-2);
928 tag += rate_len-2;
929
930 *(tag++) = MFIE_TYPE_DS_SET;
931 *(tag++) = 1;
932 *(tag++) = ieee->current_network.channel;
933
934 if (atim_len) {
935 u16 val16;
936 *(tag++) = MFIE_TYPE_IBSS_SET;
937 *(tag++) = 2;
938 val16 = ieee->current_network.atim_window;
939 memcpy((u8 *)tag, (u8 *)&val16, 2);
940 tag += 2;
941 }
942
943 if (erp_len) {
944 *(tag++) = MFIE_TYPE_ERP;
945 *(tag++) = 1;
946 *(tag++) = erpinfo_content;
947 }
948 if (rate_ex_len) {
949 *(tag++) = MFIE_TYPE_RATES_EX;
950 *(tag++) = rate_ex_len-2;
951 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
952 tag += rate_ex_len-2;
953 }
954
955 if (wpa_ie_len) {
956 if (ieee->iw_mode == IW_MODE_ADHOC)
957 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
958 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
959 tag += ieee->wpa_ie_len;
960 }
961 return skb;
962 }
963
964 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
965 {
966 struct sk_buff *skb;
967 u8 *tag;
968
969 struct lib80211_crypt_data *crypt;
970 struct rtllib_assoc_response_frame *assoc;
971 short encrypt;
972
973 unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
974 int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
975 ieee->tx_headroom;
976
977 skb = dev_alloc_skb(len);
978
979 if (!skb)
980 return NULL;
981
982 skb_reserve(skb, ieee->tx_headroom);
983
984 assoc = skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
985
986 assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
987 ether_addr_copy(assoc->header.addr1, dest);
988 ether_addr_copy(assoc->header.addr3, ieee->dev->dev_addr);
989 ether_addr_copy(assoc->header.addr2, ieee->dev->dev_addr);
990 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
991 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
992
993
994 if (ieee->short_slot)
995 assoc->capability |=
996 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
997
998 if (ieee->host_encrypt)
999 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1000 else
1001 crypt = NULL;
1002
1003 encrypt = (crypt && crypt->ops);
1004
1005 if (encrypt)
1006 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1007
1008 assoc->status = 0;
1009 assoc->aid = cpu_to_le16(ieee->assoc_id);
1010 if (ieee->assoc_id == 0x2007)
1011 ieee->assoc_id = 0;
1012 else
1013 ieee->assoc_id++;
1014
1015 tag = skb_put(skb, rate_len);
1016 rtllib_MFIE_Brate(ieee, &tag);
1017 rtllib_MFIE_Grate(ieee, &tag);
1018
1019 return skb;
1020 }
1021
1022 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1023 u8 *dest)
1024 {
1025 struct sk_buff *skb = NULL;
1026 struct rtllib_authentication *auth;
1027 int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1028
1029 skb = dev_alloc_skb(len);
1030 if (!skb)
1031 return NULL;
1032
1033 skb->len = sizeof(struct rtllib_authentication);
1034
1035 skb_reserve(skb, ieee->tx_headroom);
1036
1037 auth = skb_put(skb, sizeof(struct rtllib_authentication));
1038
1039 auth->status = cpu_to_le16(status);
1040 auth->transaction = cpu_to_le16(2);
1041 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1042
1043 ether_addr_copy(auth->header.addr3, ieee->dev->dev_addr);
1044 ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
1045 ether_addr_copy(auth->header.addr1, dest);
1046 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1047 return skb;
1048
1049
1050 }
1051
1052 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1053 {
1054 struct sk_buff *skb;
1055 struct rtllib_hdr_3addr *hdr;
1056
1057 skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1058 if (!skb)
1059 return NULL;
1060
1061 skb_reserve(skb, ieee->tx_headroom);
1062
1063 hdr = skb_put(skb, sizeof(struct rtllib_hdr_3addr));
1064
1065 ether_addr_copy(hdr->addr1, ieee->current_network.bssid);
1066 ether_addr_copy(hdr->addr2, ieee->dev->dev_addr);
1067 ether_addr_copy(hdr->addr3, ieee->current_network.bssid);
1068
1069 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1070 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1071 (pwr ? RTLLIB_FCTL_PM : 0));
1072
1073 return skb;
1074
1075
1076 }
1077
1078 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1079 {
1080 struct sk_buff *skb;
1081 struct rtllib_pspoll_hdr *hdr;
1082
1083 skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1084 if (!skb)
1085 return NULL;
1086
1087 skb_reserve(skb, ieee->tx_headroom);
1088
1089 hdr = skb_put(skb, sizeof(struct rtllib_pspoll_hdr));
1090
1091 ether_addr_copy(hdr->bssid, ieee->current_network.bssid);
1092 ether_addr_copy(hdr->ta, ieee->dev->dev_addr);
1093
1094 hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1095 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1096 RTLLIB_FCTL_PM);
1097
1098 return skb;
1099
1100 }
1101
1102 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1103 {
1104 struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1105
1106 if (buf)
1107 softmac_mgmt_xmit(buf, ieee);
1108 }
1109
1110
1111 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1112 {
1113 struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1114
1115 if (buf)
1116 softmac_mgmt_xmit(buf, ieee);
1117 }
1118
1119
1120 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1121 {
1122 struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1123
1124 if (buf)
1125 softmac_mgmt_xmit(buf, ieee);
1126 }
1127
1128
1129 static inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1130 {
1131 int i = 0;
1132
1133 do {
1134 if ((ieee->PMKIDList[i].bUsed) &&
1135 (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1136 break;
1137 i++;
1138 } while (i < NUM_PMKID_CACHE);
1139
1140 if (i == NUM_PMKID_CACHE)
1141 i = -1;
1142 return i;
1143 }
1144
1145 static inline struct sk_buff *
1146 rtllib_association_req(struct rtllib_network *beacon,
1147 struct rtllib_device *ieee)
1148 {
1149 struct sk_buff *skb;
1150 struct rtllib_assoc_request_frame *hdr;
1151 u8 *tag, *ies;
1152 int i;
1153 u8 *ht_cap_buf = NULL;
1154 u8 ht_cap_len = 0;
1155 u8 *realtek_ie_buf = NULL;
1156 u8 realtek_ie_len = 0;
1157 int wpa_ie_len = ieee->wpa_ie_len;
1158 int wps_ie_len = ieee->wps_ie_len;
1159 unsigned int ckip_ie_len = 0;
1160 unsigned int ccxrm_ie_len = 0;
1161 unsigned int cxvernum_ie_len = 0;
1162 struct lib80211_crypt_data *crypt;
1163 int encrypt;
1164 int PMKCacheIdx;
1165
1166 unsigned int rate_len = (beacon->rates_len ?
1167 (beacon->rates_len + 2) : 0) +
1168 (beacon->rates_ex_len ? (beacon->rates_ex_len) +
1169 2 : 0);
1170
1171 unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1172 unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1173
1174 int len = 0;
1175
1176 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1177 if (crypt != NULL)
1178 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1179 ((strcmp(crypt->ops->name, "R-WEP") == 0 ||
1180 wpa_ie_len));
1181 else
1182 encrypt = 0;
1183
1184 if ((ieee->rtllib_ap_sec_type &&
1185 (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1186 ieee->bForcedBgMode) {
1187 ieee->pHTInfo->bEnableHT = 0;
1188 ieee->mode = WIRELESS_MODE_G;
1189 }
1190
1191 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1192 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1193 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1194 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1195 encrypt, true);
1196 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1197 realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1198 realtek_ie_len =
1199 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1200 HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1201 &realtek_ie_len);
1202 }
1203 }
1204
1205 if (beacon->bCkipSupported)
1206 ckip_ie_len = 30+2;
1207 if (beacon->bCcxRmEnable)
1208 ccxrm_ie_len = 6+2;
1209 if (beacon->BssCcxVerNumber >= 2)
1210 cxvernum_ie_len = 5+2;
1211
1212 PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1213 if (PMKCacheIdx >= 0) {
1214 wpa_ie_len += 18;
1215 netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n",
1216 wpa_ie_len);
1217 }
1218 len = sizeof(struct rtllib_assoc_request_frame) + 2
1219 + beacon->ssid_len
1220 + rate_len
1221 + wpa_ie_len
1222 + wps_ie_len
1223 + wmm_info_len
1224 + turbo_info_len
1225 + ht_cap_len
1226 + realtek_ie_len
1227 + ckip_ie_len
1228 + ccxrm_ie_len
1229 + cxvernum_ie_len
1230 + ieee->tx_headroom;
1231
1232 skb = dev_alloc_skb(len);
1233
1234 if (!skb)
1235 return NULL;
1236
1237 skb_reserve(skb, ieee->tx_headroom);
1238
1239 hdr = skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1240
1241
1242 hdr->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_REQ);
1243 hdr->header.duration_id = cpu_to_le16(37);
1244 ether_addr_copy(hdr->header.addr1, beacon->bssid);
1245 ether_addr_copy(hdr->header.addr2, ieee->dev->dev_addr);
1246 ether_addr_copy(hdr->header.addr3, beacon->bssid);
1247
1248 ether_addr_copy(ieee->ap_mac_addr, beacon->bssid);
1249
1250 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1251 if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1252 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1253
1254 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1255 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1256
1257 if (ieee->short_slot &&
1258 (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1259 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1260
1261
1262 hdr->listen_interval = cpu_to_le16(beacon->listen_interval);
1263
1264 hdr->info_element[0].id = MFIE_TYPE_SSID;
1265
1266 hdr->info_element[0].len = beacon->ssid_len;
1267 tag = skb_put_data(skb, beacon->ssid, beacon->ssid_len);
1268
1269 tag = skb_put(skb, rate_len);
1270
1271 if (beacon->rates_len) {
1272 *tag++ = MFIE_TYPE_RATES;
1273 *tag++ = beacon->rates_len;
1274 for (i = 0; i < beacon->rates_len; i++)
1275 *tag++ = beacon->rates[i];
1276 }
1277
1278 if (beacon->rates_ex_len) {
1279 *tag++ = MFIE_TYPE_RATES_EX;
1280 *tag++ = beacon->rates_ex_len;
1281 for (i = 0; i < beacon->rates_ex_len; i++)
1282 *tag++ = beacon->rates_ex[i];
1283 }
1284
1285 if (beacon->bCkipSupported) {
1286 static const u8 AironetIeOui[] = {0x00, 0x01, 0x66};
1287 u8 CcxAironetBuf[30];
1288 struct octet_string osCcxAironetIE;
1289
1290 memset(CcxAironetBuf, 0, 30);
1291 osCcxAironetIE.Octet = CcxAironetBuf;
1292 osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1293 memcpy(osCcxAironetIE.Octet, AironetIeOui,
1294 sizeof(AironetIeOui));
1295
1296 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1297 (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1298 tag = skb_put(skb, ckip_ie_len);
1299 *tag++ = MFIE_TYPE_AIRONET;
1300 *tag++ = osCcxAironetIE.Length;
1301 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1302 tag += osCcxAironetIE.Length;
1303 }
1304
1305 if (beacon->bCcxRmEnable) {
1306 static const u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01,
1307 0x00};
1308 struct octet_string osCcxRmCap;
1309
1310 osCcxRmCap.Octet = (u8 *) CcxRmCapBuf;
1311 osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1312 tag = skb_put(skb, ccxrm_ie_len);
1313 *tag++ = MFIE_TYPE_GENERIC;
1314 *tag++ = osCcxRmCap.Length;
1315 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1316 tag += osCcxRmCap.Length;
1317 }
1318
1319 if (beacon->BssCcxVerNumber >= 2) {
1320 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1321 struct octet_string osCcxVerNum;
1322
1323 CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1324 osCcxVerNum.Octet = CcxVerNumBuf;
1325 osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1326 tag = skb_put(skb, cxvernum_ie_len);
1327 *tag++ = MFIE_TYPE_GENERIC;
1328 *tag++ = osCcxVerNum.Length;
1329 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1330 tag += osCcxVerNum.Length;
1331 }
1332 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1333 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1334 tag = skb_put(skb, ht_cap_len);
1335 *tag++ = MFIE_TYPE_HT_CAP;
1336 *tag++ = ht_cap_len - 2;
1337 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1338 tag += ht_cap_len - 2;
1339 }
1340 }
1341
1342 if (wpa_ie_len) {
1343 tag = skb_put_data(skb, ieee->wpa_ie, ieee->wpa_ie_len);
1344
1345 if (PMKCacheIdx >= 0) {
1346 tag = skb_put(skb, 18);
1347 *tag = 1;
1348 *(tag + 1) = 0;
1349 memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1350 16);
1351 }
1352 }
1353 if (wmm_info_len) {
1354 tag = skb_put(skb, wmm_info_len);
1355 rtllib_WMM_Info(ieee, &tag);
1356 }
1357
1358 if (wps_ie_len && ieee->wps_ie) {
1359 tag = skb_put_data(skb, ieee->wps_ie, wps_ie_len);
1360 }
1361
1362 tag = skb_put(skb, turbo_info_len);
1363 if (turbo_info_len)
1364 rtllib_TURBO_Info(ieee, &tag);
1365
1366 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1367 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1368 tag = skb_put(skb, ht_cap_len);
1369 *tag++ = MFIE_TYPE_GENERIC;
1370 *tag++ = ht_cap_len - 2;
1371 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1372 tag += ht_cap_len - 2;
1373 }
1374
1375 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1376 tag = skb_put(skb, realtek_ie_len);
1377 *tag++ = MFIE_TYPE_GENERIC;
1378 *tag++ = realtek_ie_len - 2;
1379 memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1380 }
1381 }
1382
1383 kfree(ieee->assocreq_ies);
1384 ieee->assocreq_ies = NULL;
1385 ies = &(hdr->info_element[0].id);
1386 ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1387 ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
1388 if (ieee->assocreq_ies)
1389 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
1390 else {
1391 netdev_info(ieee->dev,
1392 "%s()Warning: can't alloc memory for assocreq_ies\n",
1393 __func__);
1394 ieee->assocreq_ies_len = 0;
1395 }
1396 return skb;
1397 }
1398
1399 static void rtllib_associate_abort(struct rtllib_device *ieee)
1400 {
1401 unsigned long flags;
1402
1403 spin_lock_irqsave(&ieee->lock, flags);
1404
1405 ieee->associate_seq++;
1406
1407 /* don't scan, and avoid to have the RX path possibily
1408 * try again to associate. Even do not react to AUTH or
1409 * ASSOC response. Just wait for the retry wq to be scheduled.
1410 * Here we will check if there are good nets to associate
1411 * with, so we retry or just get back to NO_LINK and scanning
1412 */
1413 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1414 netdev_dbg(ieee->dev, "Authentication failed\n");
1415 ieee->softmac_stats.no_auth_rs++;
1416 } else {
1417 netdev_dbg(ieee->dev, "Association failed\n");
1418 ieee->softmac_stats.no_ass_rs++;
1419 }
1420
1421 ieee->state = RTLLIB_ASSOCIATING_RETRY;
1422
1423 schedule_delayed_work(&ieee->associate_retry_wq,
1424 RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1425
1426 spin_unlock_irqrestore(&ieee->lock, flags);
1427 }
1428
1429 static void rtllib_associate_abort_cb(unsigned long dev)
1430 {
1431 rtllib_associate_abort((struct rtllib_device *) dev);
1432 }
1433
1434 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr)
1435 {
1436 struct rtllib_network *beacon = &ieee->current_network;
1437 struct sk_buff *skb;
1438
1439 netdev_dbg(ieee->dev, "Stopping scan\n");
1440
1441 ieee->softmac_stats.tx_auth_rq++;
1442
1443 skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1444
1445 if (!skb)
1446 rtllib_associate_abort(ieee);
1447 else {
1448 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING;
1449 netdev_dbg(ieee->dev, "Sending authentication request\n");
1450 softmac_mgmt_xmit(skb, ieee);
1451 if (!timer_pending(&ieee->associate_timer)) {
1452 ieee->associate_timer.expires = jiffies + (HZ / 2);
1453 add_timer(&ieee->associate_timer);
1454 }
1455 }
1456 }
1457
1458 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge,
1459 int chlen)
1460 {
1461 u8 *c;
1462 struct sk_buff *skb;
1463 struct rtllib_network *beacon = &ieee->current_network;
1464
1465 ieee->associate_seq++;
1466 ieee->softmac_stats.tx_auth_rq++;
1467
1468 skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1469
1470 if (!skb)
1471 rtllib_associate_abort(ieee);
1472 else {
1473 c = skb_put(skb, chlen+2);
1474 *(c++) = MFIE_TYPE_CHALLENGE;
1475 *(c++) = chlen;
1476 memcpy(c, challenge, chlen);
1477
1478 netdev_dbg(ieee->dev,
1479 "Sending authentication challenge response\n");
1480
1481 rtllib_encrypt_fragment(ieee, skb,
1482 sizeof(struct rtllib_hdr_3addr));
1483
1484 softmac_mgmt_xmit(skb, ieee);
1485 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1486 }
1487 kfree(challenge);
1488 }
1489
1490 static void rtllib_associate_step2(struct rtllib_device *ieee)
1491 {
1492 struct sk_buff *skb;
1493 struct rtllib_network *beacon = &ieee->current_network;
1494
1495 del_timer_sync(&ieee->associate_timer);
1496
1497 netdev_dbg(ieee->dev, "Sending association request\n");
1498
1499 ieee->softmac_stats.tx_ass_rq++;
1500 skb = rtllib_association_req(beacon, ieee);
1501 if (!skb)
1502 rtllib_associate_abort(ieee);
1503 else {
1504 softmac_mgmt_xmit(skb, ieee);
1505 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1506 }
1507 }
1508
1509 static void rtllib_associate_complete_wq(void *data)
1510 {
1511 struct rtllib_device *ieee = (struct rtllib_device *)
1512 container_of_work_rsl(data,
1513 struct rtllib_device,
1514 associate_complete_wq);
1515 struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl);
1516
1517 netdev_info(ieee->dev, "Associated successfully\n");
1518 if (!ieee->is_silent_reset) {
1519 netdev_info(ieee->dev, "normal associate\n");
1520 notify_wx_assoc_event(ieee);
1521 }
1522
1523 netif_carrier_on(ieee->dev);
1524 ieee->is_roaming = false;
1525 if (rtllib_is_54g(&ieee->current_network) &&
1526 (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1527 ieee->rate = 108;
1528 netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate);
1529 } else {
1530 ieee->rate = 22;
1531 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1532 netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate);
1533 }
1534 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1535 netdev_info(ieee->dev, "Successfully associated, ht enabled\n");
1536 HTOnAssocRsp(ieee);
1537 } else {
1538 netdev_info(ieee->dev,
1539 "Successfully associated, ht not enabled(%d, %d)\n",
1540 ieee->pHTInfo->bCurrentHTSupport,
1541 ieee->pHTInfo->bEnableHT);
1542 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1543 }
1544 ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1545 ieee->current_network.beacon_interval /
1546 500);
1547 if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1548 ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1549 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1550 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1551 }
1552 pPSC->LpsIdleCount = 0;
1553 ieee->link_change(ieee->dev);
1554
1555 if (ieee->is_silent_reset) {
1556 netdev_info(ieee->dev, "silent reset associate\n");
1557 ieee->is_silent_reset = false;
1558 }
1559
1560 if (ieee->data_hard_resume)
1561 ieee->data_hard_resume(ieee->dev);
1562
1563 }
1564
1565 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1566 {
1567 }
1568
1569 static void rtllib_associate_complete(struct rtllib_device *ieee)
1570 {
1571 del_timer_sync(&ieee->associate_timer);
1572
1573 ieee->state = RTLLIB_LINKED;
1574 rtllib_sta_send_associnfo(ieee);
1575
1576 schedule_work(&ieee->associate_complete_wq);
1577 }
1578
1579 static void rtllib_associate_procedure_wq(void *data)
1580 {
1581 struct rtllib_device *ieee = container_of_dwork_rsl(data,
1582 struct rtllib_device,
1583 associate_procedure_wq);
1584 rtllib_stop_scan_syncro(ieee);
1585 if (ieee->rtllib_ips_leave != NULL)
1586 ieee->rtllib_ips_leave(ieee->dev);
1587 mutex_lock(&ieee->wx_mutex);
1588
1589 if (ieee->data_hard_stop)
1590 ieee->data_hard_stop(ieee->dev);
1591
1592 rtllib_stop_scan(ieee);
1593 RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1594 ieee->current_network.channel);
1595 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1596 if (ieee->eRFPowerState == eRfOff) {
1597 RT_TRACE(COMP_DBG,
1598 "=============>%s():Rf state is eRfOff, schedule ipsleave wq again,return\n",
1599 __func__);
1600 if (ieee->rtllib_ips_leave_wq != NULL)
1601 ieee->rtllib_ips_leave_wq(ieee->dev);
1602 mutex_unlock(&ieee->wx_mutex);
1603 return;
1604 }
1605 ieee->associate_seq = 1;
1606
1607 rtllib_associate_step1(ieee, ieee->current_network.bssid);
1608
1609 mutex_unlock(&ieee->wx_mutex);
1610 }
1611
1612 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1613 struct rtllib_network *net)
1614 {
1615 u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1616 int tmp_ssid_len = 0;
1617
1618 short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1619
1620 /* we are interested in new new only if we are not associated
1621 * and we are not associating / authenticating
1622 */
1623 if (ieee->state != RTLLIB_NOLINK)
1624 return;
1625
1626 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1627 WLAN_CAPABILITY_ESS))
1628 return;
1629
1630 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1631 WLAN_CAPABILITY_IBSS))
1632 return;
1633
1634 if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1635 (net->channel > ieee->ibss_maxjoin_chal))
1636 return;
1637 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1638 /* if the user specified the AP MAC, we need also the essid
1639 * This could be obtained by beacons or, if the network does not
1640 * broadcast it, it can be put manually.
1641 */
1642 apset = ieee->wap_set;
1643 ssidset = ieee->ssid_set;
1644 ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0');
1645 apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1646 ETH_ALEN) == 0);
1647 if (!ssidbroad) {
1648 ssidmatch = (ieee->current_network.ssid_len ==
1649 net->hidden_ssid_len) &&
1650 (!strncmp(ieee->current_network.ssid,
1651 net->hidden_ssid, net->hidden_ssid_len));
1652 if (net->hidden_ssid_len > 0) {
1653 strncpy(net->ssid, net->hidden_ssid,
1654 net->hidden_ssid_len);
1655 net->ssid_len = net->hidden_ssid_len;
1656 ssidbroad = 1;
1657 }
1658 } else
1659 ssidmatch =
1660 (ieee->current_network.ssid_len == net->ssid_len) &&
1661 (!strncmp(ieee->current_network.ssid, net->ssid,
1662 net->ssid_len));
1663
1664 /* if the user set the AP check if match.
1665 * if the network does not broadcast essid we check the
1666 * user supplied ANY essid
1667 * if the network does broadcast and the user does not set
1668 * essid it is OK
1669 * if the network does broadcast and the user did set essid
1670 * check if essid match
1671 * if the ap is not set, check that the user set the bssid
1672 * and the network does broadcast and that those two bssid match
1673 */
1674 if ((apset && apmatch &&
1675 ((ssidset && ssidbroad && ssidmatch) ||
1676 (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1677 (!apset && ssidset && ssidbroad && ssidmatch) ||
1678 (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1679 /* if the essid is hidden replace it with the
1680 * essid provided by the user.
1681 */
1682 if (!ssidbroad) {
1683 strncpy(tmp_ssid, ieee->current_network.ssid,
1684 IW_ESSID_MAX_SIZE);
1685 tmp_ssid_len = ieee->current_network.ssid_len;
1686 }
1687 memcpy(&ieee->current_network, net,
1688 sizeof(struct rtllib_network));
1689 if (!ssidbroad) {
1690 strncpy(ieee->current_network.ssid, tmp_ssid,
1691 IW_ESSID_MAX_SIZE);
1692 ieee->current_network.ssid_len = tmp_ssid_len;
1693 }
1694 netdev_info(ieee->dev,
1695 "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d, mode:%x cur_net.flags:0x%x\n",
1696 ieee->current_network.ssid,
1697 ieee->current_network.channel,
1698 ieee->current_network.qos_data.supported,
1699 ieee->pHTInfo->bEnableHT,
1700 ieee->current_network.bssht.bdSupportHT,
1701 ieee->current_network.mode,
1702 ieee->current_network.flags);
1703
1704 if ((rtllib_act_scanning(ieee, false)) &&
1705 !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1706 rtllib_stop_scan_syncro(ieee);
1707
1708 HTResetIOTSetting(ieee->pHTInfo);
1709 ieee->wmm_acm = 0;
1710 if (ieee->iw_mode == IW_MODE_INFRA) {
1711 /* Join the network for the first time */
1712 ieee->AsocRetryCount = 0;
1713 if ((ieee->current_network.qos_data.supported == 1) &&
1714 ieee->current_network.bssht.bdSupportHT)
1715 HTResetSelfAndSavePeerSetting(ieee,
1716 &(ieee->current_network));
1717 else
1718 ieee->pHTInfo->bCurrentHTSupport =
1719 false;
1720
1721 ieee->state = RTLLIB_ASSOCIATING;
1722 if (ieee->LedControlHandler != NULL)
1723 ieee->LedControlHandler(ieee->dev,
1724 LED_CTL_START_TO_LINK);
1725 schedule_delayed_work(
1726 &ieee->associate_procedure_wq, 0);
1727 } else {
1728 if (rtllib_is_54g(&ieee->current_network) &&
1729 (ieee->modulation &
1730 RTLLIB_OFDM_MODULATION)) {
1731 ieee->rate = 108;
1732 ieee->SetWirelessMode(ieee->dev,
1733 IEEE_G);
1734 netdev_info(ieee->dev,
1735 "Using G rates\n");
1736 } else {
1737 ieee->rate = 22;
1738 ieee->SetWirelessMode(ieee->dev,
1739 IEEE_B);
1740 netdev_info(ieee->dev,
1741 "Using B rates\n");
1742 }
1743 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1744 ieee->state = RTLLIB_LINKED;
1745 }
1746 }
1747 }
1748 }
1749
1750 static void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1751 {
1752 unsigned long flags;
1753 struct rtllib_network *target;
1754
1755 spin_lock_irqsave(&ieee->lock, flags);
1756
1757 list_for_each_entry(target, &ieee->network_list, list) {
1758
1759 /* if the state become different that NOLINK means
1760 * we had found what we are searching for
1761 */
1762
1763 if (ieee->state != RTLLIB_NOLINK)
1764 break;
1765
1766 if (ieee->scan_age == 0 || time_after(target->last_scanned +
1767 ieee->scan_age, jiffies))
1768 rtllib_softmac_new_net(ieee, target);
1769 }
1770 spin_unlock_irqrestore(&ieee->lock, flags);
1771 }
1772
1773 static inline u16 auth_parse(struct net_device *dev, struct sk_buff *skb,
1774 u8 **challenge, int *chlen)
1775 {
1776 struct rtllib_authentication *a;
1777 u8 *t;
1778
1779 if (skb->len < (sizeof(struct rtllib_authentication) -
1780 sizeof(struct rtllib_info_element))) {
1781 netdev_dbg(dev, "invalid len in auth resp: %d\n", skb->len);
1782 return 0xcafe;
1783 }
1784 *challenge = NULL;
1785 a = (struct rtllib_authentication *) skb->data;
1786 if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1787 t = skb->data + sizeof(struct rtllib_authentication);
1788
1789 if (*(t++) == MFIE_TYPE_CHALLENGE) {
1790 *chlen = *(t++);
1791 *challenge = kmemdup(t, *chlen, GFP_ATOMIC);
1792 if (!*challenge)
1793 return -ENOMEM;
1794 }
1795 }
1796 return le16_to_cpu(a->status);
1797 }
1798
1799 static int auth_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest)
1800 {
1801 struct rtllib_authentication *a;
1802
1803 if (skb->len < (sizeof(struct rtllib_authentication) -
1804 sizeof(struct rtllib_info_element))) {
1805 netdev_dbg(dev, "invalid len in auth request: %d\n", skb->len);
1806 return -1;
1807 }
1808 a = (struct rtllib_authentication *) skb->data;
1809
1810 ether_addr_copy(dest, a->header.addr2);
1811
1812 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1813 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1814
1815 return WLAN_STATUS_SUCCESS;
1816 }
1817
1818 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1819 u8 *src)
1820 {
1821 u8 *tag;
1822 u8 *skbend;
1823 u8 *ssid = NULL;
1824 u8 ssidlen = 0;
1825 struct rtllib_hdr_3addr *header =
1826 (struct rtllib_hdr_3addr *) skb->data;
1827 bool bssid_match;
1828
1829 if (skb->len < sizeof(struct rtllib_hdr_3addr))
1830 return -1; /* corrupted */
1831
1832 bssid_match =
1833 (!ether_addr_equal(header->addr3, ieee->current_network.bssid)) &&
1834 (!is_broadcast_ether_addr(header->addr3));
1835 if (bssid_match)
1836 return -1;
1837
1838 ether_addr_copy(src, header->addr2);
1839
1840 skbend = (u8 *)skb->data + skb->len;
1841
1842 tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1843
1844 while (tag + 1 < skbend) {
1845 if (*tag == 0) {
1846 ssid = tag + 2;
1847 ssidlen = *(tag + 1);
1848 break;
1849 }
1850 tag++; /* point to the len field */
1851 tag = tag + *(tag); /* point to the last data byte of the tag */
1852 tag++; /* point to the next tag */
1853 }
1854
1855 if (ssidlen == 0)
1856 return 1;
1857
1858 if (!ssid)
1859 return 1; /* ssid not found in tagged param */
1860
1861 return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1862 }
1863
1864 static int assoc_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest)
1865 {
1866 struct rtllib_assoc_request_frame *a;
1867
1868 if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1869 sizeof(struct rtllib_info_element))) {
1870 netdev_dbg(dev, "invalid len in auth request:%d\n", skb->len);
1871 return -1;
1872 }
1873
1874 a = (struct rtllib_assoc_request_frame *) skb->data;
1875
1876 ether_addr_copy(dest, a->header.addr2);
1877
1878 return 0;
1879 }
1880
1881 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1882 int *aid)
1883 {
1884 struct rtllib_assoc_response_frame *response_head;
1885 u16 status_code;
1886
1887 if (skb->len < sizeof(struct rtllib_assoc_response_frame)) {
1888 netdev_dbg(ieee->dev, "Invalid len in auth resp: %d\n",
1889 skb->len);
1890 return 0xcafe;
1891 }
1892
1893 response_head = (struct rtllib_assoc_response_frame *) skb->data;
1894 *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1895
1896 status_code = le16_to_cpu(response_head->status);
1897 if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1898 status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1899 ((ieee->mode == IEEE_G) &&
1900 (ieee->current_network.mode == IEEE_N_24G) &&
1901 (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1902 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1903 } else {
1904 ieee->AsocRetryCount = 0;
1905 }
1906
1907 return le16_to_cpu(response_head->status);
1908 }
1909
1910 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1911 {
1912 u8 dest[ETH_ALEN];
1913
1914 ieee->softmac_stats.rx_probe_rq++;
1915 if (probe_rq_parse(ieee, skb, dest) > 0) {
1916 ieee->softmac_stats.tx_probe_rs++;
1917 rtllib_resp_to_probe(ieee, dest);
1918 }
1919 }
1920
1921 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1922 struct sk_buff *skb)
1923 {
1924 u8 dest[ETH_ALEN];
1925 int status;
1926
1927 ieee->softmac_stats.rx_auth_rq++;
1928
1929 status = auth_rq_parse(ieee->dev, skb, dest);
1930 if (status != -1)
1931 rtllib_resp_to_auth(ieee, status, dest);
1932 }
1933
1934 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1935 struct sk_buff *skb)
1936 {
1937 u8 dest[ETH_ALEN];
1938
1939
1940 ieee->softmac_stats.rx_ass_rq++;
1941 if (assoc_rq_parse(ieee->dev, skb, dest) != -1)
1942 rtllib_resp_to_assoc_rq(ieee, dest);
1943
1944 netdev_info(ieee->dev, "New client associated: %pM\n", dest);
1945 }
1946
1947 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1948 {
1949
1950 struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1951
1952 if (buf)
1953 softmac_ps_mgmt_xmit(buf, ieee);
1954 }
1955 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1956
1957 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1958 {
1959 struct sk_buff *buf = rtllib_pspoll_func(ieee);
1960
1961 if (buf)
1962 softmac_ps_mgmt_xmit(buf, ieee);
1963 }
1964
1965 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1966 {
1967 int timeout = ieee->ps_timeout;
1968 u8 dtim;
1969 struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl);
1970
1971 if (ieee->LPSDelayCnt) {
1972 ieee->LPSDelayCnt--;
1973 return 0;
1974 }
1975
1976 dtim = ieee->current_network.dtim_data;
1977 if (!(dtim & RTLLIB_DTIM_VALID))
1978 return 0;
1979 timeout = ieee->current_network.beacon_interval;
1980 ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1981 /* there's no need to nofity AP that I find you buffered
1982 * with broadcast packet
1983 */
1984 if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1985 return 2;
1986
1987 if (!time_after(jiffies,
1988 dev_trans_start(ieee->dev) + msecs_to_jiffies(timeout)))
1989 return 0;
1990 if (!time_after(jiffies,
1991 ieee->last_rx_ps_time + msecs_to_jiffies(timeout)))
1992 return 0;
1993 if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
1994 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
1995 return 0;
1996
1997 if (time) {
1998 if (ieee->bAwakePktSent) {
1999 pPSC->LPSAwakeIntvl = 1;
2000 } else {
2001 u8 MaxPeriod = 1;
2002
2003 if (pPSC->LPSAwakeIntvl == 0)
2004 pPSC->LPSAwakeIntvl = 1;
2005 if (pPSC->RegMaxLPSAwakeIntvl == 0)
2006 MaxPeriod = 1;
2007 else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2008 MaxPeriod = ieee->current_network.dtim_period;
2009 else
2010 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2011 pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2012 MaxPeriod) ? MaxPeriod :
2013 (pPSC->LPSAwakeIntvl + 1);
2014 }
2015 {
2016 u8 LPSAwakeIntvl_tmp = 0;
2017 u8 period = ieee->current_network.dtim_period;
2018 u8 count = ieee->current_network.tim.tim_count;
2019
2020 if (count == 0) {
2021 if (pPSC->LPSAwakeIntvl > period)
2022 LPSAwakeIntvl_tmp = period +
2023 (pPSC->LPSAwakeIntvl -
2024 period) -
2025 ((pPSC->LPSAwakeIntvl-period) %
2026 period);
2027 else
2028 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2029
2030 } else {
2031 if (pPSC->LPSAwakeIntvl >
2032 ieee->current_network.tim.tim_count)
2033 LPSAwakeIntvl_tmp = count +
2034 (pPSC->LPSAwakeIntvl - count) -
2035 ((pPSC->LPSAwakeIntvl-count)%period);
2036 else
2037 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2038 }
2039
2040 *time = ieee->current_network.last_dtim_sta_time
2041 + msecs_to_jiffies(ieee->current_network.beacon_interval *
2042 LPSAwakeIntvl_tmp);
2043 }
2044 }
2045
2046 return 1;
2047
2048
2049 }
2050
2051 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2052 {
2053 u64 time;
2054 short sleep;
2055 unsigned long flags, flags2;
2056
2057 spin_lock_irqsave(&ieee->lock, flags);
2058
2059 if ((ieee->ps == RTLLIB_PS_DISABLED ||
2060 ieee->iw_mode != IW_MODE_INFRA ||
2061 ieee->state != RTLLIB_LINKED)) {
2062 RT_TRACE(COMP_DBG,
2063 "=====>%s(): no need to ps,wake up!! ieee->ps is %d, ieee->iw_mode is %d, ieee->state is %d\n",
2064 __func__, ieee->ps, ieee->iw_mode, ieee->state);
2065 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2066 rtllib_sta_wakeup(ieee, 1);
2067
2068 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2069 }
2070 sleep = rtllib_sta_ps_sleep(ieee, &time);
2071 /* 2 wake, 1 sleep, 0 do nothing */
2072 if (sleep == 0)
2073 goto out;
2074 if (sleep == 1) {
2075 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2076 ieee->enter_sleep_state(ieee->dev, time);
2077 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2078 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2079
2080 if (ieee->ps_is_queue_empty(ieee->dev)) {
2081 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2082 ieee->ack_tx_to_ieee = 1;
2083 rtllib_sta_ps_send_null_frame(ieee, 1);
2084 ieee->ps_time = time;
2085 }
2086 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2087
2088 }
2089
2090 ieee->bAwakePktSent = false;
2091
2092 } else if (sleep == 2) {
2093 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2094
2095 rtllib_sta_wakeup(ieee, 1);
2096
2097 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2098 }
2099
2100 out:
2101 spin_unlock_irqrestore(&ieee->lock, flags);
2102
2103 }
2104
2105 static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2106 {
2107 if (ieee->sta_sleep == LPS_IS_WAKE) {
2108 if (nl) {
2109 if (ieee->pHTInfo->IOTAction &
2110 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2111 ieee->ack_tx_to_ieee = 1;
2112 rtllib_sta_ps_send_null_frame(ieee, 0);
2113 } else {
2114 ieee->ack_tx_to_ieee = 1;
2115 rtllib_sta_ps_send_pspoll_frame(ieee);
2116 }
2117 }
2118 return;
2119
2120 }
2121
2122 if (ieee->sta_sleep == LPS_IS_SLEEP)
2123 ieee->sta_wake_up(ieee->dev);
2124 if (nl) {
2125 if (ieee->pHTInfo->IOTAction &
2126 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2127 ieee->ack_tx_to_ieee = 1;
2128 rtllib_sta_ps_send_null_frame(ieee, 0);
2129 } else {
2130 ieee->ack_tx_to_ieee = 1;
2131 ieee->polling = true;
2132 rtllib_sta_ps_send_pspoll_frame(ieee);
2133 }
2134
2135 } else {
2136 ieee->sta_sleep = LPS_IS_WAKE;
2137 ieee->polling = false;
2138 }
2139 }
2140
2141 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2142 {
2143 unsigned long flags, flags2;
2144
2145 spin_lock_irqsave(&ieee->lock, flags);
2146
2147 if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2148 /* Null frame with PS bit set */
2149 if (success) {
2150 ieee->sta_sleep = LPS_IS_SLEEP;
2151 ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2152 }
2153 /* if the card report not success we can't be sure the AP
2154 * has not RXed so we can't assume the AP believe us awake
2155 */
2156 } else {/* 21112005 - tx again null without PS bit if lost */
2157
2158 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2159 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2160 if (ieee->pHTInfo->IOTAction &
2161 HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2162 rtllib_sta_ps_send_null_frame(ieee, 0);
2163 else
2164 rtllib_sta_ps_send_pspoll_frame(ieee);
2165 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2166 }
2167 }
2168 spin_unlock_irqrestore(&ieee->lock, flags);
2169 }
2170 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2171
2172 static void rtllib_process_action(struct rtllib_device *ieee,
2173 struct sk_buff *skb)
2174 {
2175 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2176 u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2177 u8 category = 0;
2178
2179 if (act == NULL) {
2180 netdev_warn(ieee->dev,
2181 "Error getting payload of action frame\n");
2182 return;
2183 }
2184
2185 category = *act;
2186 act++;
2187 switch (category) {
2188 case ACT_CAT_BA:
2189 switch (*act) {
2190 case ACT_ADDBAREQ:
2191 rtllib_rx_ADDBAReq(ieee, skb);
2192 break;
2193 case ACT_ADDBARSP:
2194 rtllib_rx_ADDBARsp(ieee, skb);
2195 break;
2196 case ACT_DELBA:
2197 rtllib_rx_DELBA(ieee, skb);
2198 break;
2199 }
2200 break;
2201 default:
2202 break;
2203 }
2204 }
2205
2206 static inline int
2207 rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2208 struct rtllib_rx_stats *rx_stats)
2209 {
2210 u16 errcode;
2211 int aid;
2212 u8 *ies;
2213 struct rtllib_assoc_response_frame *assoc_resp;
2214 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2215 u16 frame_ctl = le16_to_cpu(header->frame_ctl);
2216
2217 netdev_dbg(ieee->dev, "received [RE]ASSOCIATION RESPONSE (%d)\n",
2218 WLAN_FC_GET_STYPE(frame_ctl));
2219
2220 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2221 ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2222 (ieee->iw_mode == IW_MODE_INFRA)) {
2223 errcode = assoc_parse(ieee, skb, &aid);
2224 if (!errcode) {
2225 struct rtllib_network *network =
2226 kzalloc(sizeof(struct rtllib_network),
2227 GFP_ATOMIC);
2228
2229 if (!network)
2230 return 1;
2231 ieee->state = RTLLIB_LINKED;
2232 ieee->assoc_id = aid;
2233 ieee->softmac_stats.rx_ass_ok++;
2234 /* station support qos */
2235 /* Let the register setting default with Legacy station */
2236 assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2237 if (ieee->current_network.qos_data.supported == 1) {
2238 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2239 rx_stats->len - sizeof(*assoc_resp),
2240 network, rx_stats)) {
2241 kfree(network);
2242 return 1;
2243 }
2244 memcpy(ieee->pHTInfo->PeerHTCapBuf,
2245 network->bssht.bdHTCapBuf,
2246 network->bssht.bdHTCapLen);
2247 memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2248 network->bssht.bdHTInfoBuf,
2249 network->bssht.bdHTInfoLen);
2250 if (ieee->handle_assoc_response != NULL)
2251 ieee->handle_assoc_response(ieee->dev,
2252 (struct rtllib_assoc_response_frame *)header,
2253 network);
2254 }
2255 kfree(network);
2256
2257 kfree(ieee->assocresp_ies);
2258 ieee->assocresp_ies = NULL;
2259 ies = &(assoc_resp->info_element[0].id);
2260 ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2261 ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2262 GFP_ATOMIC);
2263 if (ieee->assocresp_ies)
2264 memcpy(ieee->assocresp_ies, ies,
2265 ieee->assocresp_ies_len);
2266 else {
2267 netdev_info(ieee->dev,
2268 "%s()Warning: can't alloc memory for assocresp_ies\n",
2269 __func__);
2270 ieee->assocresp_ies_len = 0;
2271 }
2272 rtllib_associate_complete(ieee);
2273 } else {
2274 /* aid could not been allocated */
2275 ieee->softmac_stats.rx_ass_err++;
2276 netdev_info(ieee->dev,
2277 "Association response status code 0x%x\n",
2278 errcode);
2279 if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2280 schedule_delayed_work(
2281 &ieee->associate_procedure_wq, 0);
2282 else
2283 rtllib_associate_abort(ieee);
2284 }
2285 }
2286 return 0;
2287 }
2288
2289 static void rtllib_rx_auth_resp(struct rtllib_device *ieee, struct sk_buff *skb)
2290 {
2291 u16 errcode;
2292 u8 *challenge;
2293 int chlen = 0;
2294 bool bSupportNmode = true, bHalfSupportNmode = false;
2295
2296 errcode = auth_parse(ieee->dev, skb, &challenge, &chlen);
2297
2298 if (errcode) {
2299 ieee->softmac_stats.rx_auth_rs_err++;
2300 netdev_info(ieee->dev,
2301 "Authentication respose status code 0x%x", errcode);
2302 rtllib_associate_abort(ieee);
2303 return;
2304 }
2305
2306 if (ieee->open_wep || !challenge) {
2307 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2308 ieee->softmac_stats.rx_auth_rs_ok++;
2309 if (!(ieee->pHTInfo->IOTAction & HT_IOT_ACT_PURE_N_MODE)) {
2310 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2311 if (IsHTHalfNmodeAPs(ieee)) {
2312 bSupportNmode = true;
2313 bHalfSupportNmode = true;
2314 } else {
2315 bSupportNmode = false;
2316 bHalfSupportNmode = false;
2317 }
2318 }
2319 }
2320 /* Dummy wirless mode setting to avoid encryption issue */
2321 if (bSupportNmode) {
2322 ieee->SetWirelessMode(ieee->dev,
2323 ieee->current_network.mode);
2324 } else {
2325 /*TODO*/
2326 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2327 }
2328
2329 if ((ieee->current_network.mode == IEEE_N_24G) &&
2330 bHalfSupportNmode) {
2331 netdev_info(ieee->dev, "======>enter half N mode\n");
2332 ieee->bHalfWirelessN24GMode = true;
2333 } else {
2334 ieee->bHalfWirelessN24GMode = false;
2335 }
2336 rtllib_associate_step2(ieee);
2337 } else {
2338 rtllib_auth_challenge(ieee, challenge, chlen);
2339 }
2340 }
2341
2342 static inline int
2343 rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2344 struct rtllib_rx_stats *rx_stats)
2345 {
2346
2347 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2348 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2349 (ieee->iw_mode == IW_MODE_INFRA)) {
2350 netdev_dbg(ieee->dev,
2351 "Received authentication response");
2352 rtllib_rx_auth_resp(ieee, skb);
2353 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2354 rtllib_rx_auth_rq(ieee, skb);
2355 }
2356 }
2357 return 0;
2358 }
2359
2360 static inline int
2361 rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2362 {
2363 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2364 u16 frame_ctl;
2365
2366 if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2367 return 0;
2368
2369 /* FIXME for now repeat all the association procedure
2370 * both for disassociation and deauthentication
2371 */
2372 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2373 ieee->state == RTLLIB_LINKED &&
2374 (ieee->iw_mode == IW_MODE_INFRA)) {
2375 frame_ctl = le16_to_cpu(header->frame_ctl);
2376 netdev_info(ieee->dev,
2377 "==========>received disassoc/deauth(%x) frame, reason code:%x\n",
2378 WLAN_FC_GET_STYPE(frame_ctl),
2379 ((struct rtllib_disassoc *)skb->data)->reason);
2380 ieee->state = RTLLIB_ASSOCIATING;
2381 ieee->softmac_stats.reassoc++;
2382 ieee->is_roaming = true;
2383 ieee->LinkDetectInfo.bBusyTraffic = false;
2384 rtllib_disassociate(ieee);
2385 RemovePeerTS(ieee, header->addr2);
2386 if (ieee->LedControlHandler != NULL)
2387 ieee->LedControlHandler(ieee->dev,
2388 LED_CTL_START_TO_LINK);
2389
2390 if (!(ieee->rtllib_ap_sec_type(ieee) &
2391 (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2392 schedule_delayed_work(
2393 &ieee->associate_procedure_wq, 5);
2394 }
2395 return 0;
2396 }
2397
2398 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2399 struct sk_buff *skb,
2400 struct rtllib_rx_stats *rx_stats, u16 type,
2401 u16 stype)
2402 {
2403 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2404 u16 frame_ctl;
2405
2406 if (!ieee->proto_started)
2407 return 0;
2408
2409 frame_ctl = le16_to_cpu(header->frame_ctl);
2410 switch (WLAN_FC_GET_STYPE(frame_ctl)) {
2411 case RTLLIB_STYPE_ASSOC_RESP:
2412 case RTLLIB_STYPE_REASSOC_RESP:
2413 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2414 return 1;
2415 break;
2416 case RTLLIB_STYPE_ASSOC_REQ:
2417 case RTLLIB_STYPE_REASSOC_REQ:
2418 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2419 ieee->iw_mode == IW_MODE_MASTER)
2420 rtllib_rx_assoc_rq(ieee, skb);
2421 break;
2422 case RTLLIB_STYPE_AUTH:
2423 rtllib_rx_auth(ieee, skb, rx_stats);
2424 break;
2425 case RTLLIB_STYPE_DISASSOC:
2426 case RTLLIB_STYPE_DEAUTH:
2427 rtllib_rx_deauth(ieee, skb);
2428 break;
2429 case RTLLIB_STYPE_MANAGE_ACT:
2430 rtllib_process_action(ieee, skb);
2431 break;
2432 default:
2433 return -1;
2434 }
2435 return 0;
2436 }
2437
2438 /* following are for a simpler TX queue management.
2439 * Instead of using netif_[stop/wake]_queue the driver
2440 * will use these two functions (plus a reset one), that
2441 * will internally use the kernel netif_* and takes
2442 * care of the ieee802.11 fragmentation.
2443 * So the driver receives a fragment per time and might
2444 * call the stop function when it wants to not
2445 * have enough room to TX an entire packet.
2446 * This might be useful if each fragment needs it's own
2447 * descriptor, thus just keep a total free memory > than
2448 * the max fragmentation threshold is not enough.. If the
2449 * ieee802.11 stack passed a TXB struct then you need
2450 * to keep N free descriptors where
2451 * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2452 * In this way you need just one and the 802.11 stack
2453 * will take care of buffering fragments and pass them to
2454 * to the driver later, when it wakes the queue.
2455 */
2456 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2457 {
2458
2459 unsigned int queue_index = txb->queue_index;
2460 unsigned long flags;
2461 int i;
2462 struct cb_desc *tcb_desc = NULL;
2463 unsigned long queue_len = 0;
2464
2465 spin_lock_irqsave(&ieee->lock, flags);
2466
2467 /* called with 2nd parm 0, no tx mgmt lock required */
2468 rtllib_sta_wakeup(ieee, 0);
2469
2470 /* update the tx status */
2471 tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2472 MAX_DEV_ADDR_SIZE);
2473 if (tcb_desc->bMulticast)
2474 ieee->stats.multicast++;
2475
2476 /* if xmit available, just xmit it immediately, else just insert it to
2477 * the wait queue
2478 */
2479 for (i = 0; i < txb->nr_frags; i++) {
2480 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2481 if ((queue_len != 0) ||
2482 (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2483 (ieee->queue_stop)) {
2484 /* insert the skb packet to the wait queue
2485 * as for the completion function, it does not need
2486 * to check it any more.
2487 */
2488 if (queue_len < 200)
2489 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2490 txb->fragments[i]);
2491 else
2492 kfree_skb(txb->fragments[i]);
2493 } else {
2494 ieee->softmac_data_hard_start_xmit(
2495 txb->fragments[i],
2496 ieee->dev, ieee->rate);
2497 }
2498 }
2499
2500 rtllib_txb_free(txb);
2501
2502 spin_unlock_irqrestore(&ieee->lock, flags);
2503
2504 }
2505
2506 void rtllib_reset_queue(struct rtllib_device *ieee)
2507 {
2508 unsigned long flags;
2509
2510 spin_lock_irqsave(&ieee->lock, flags);
2511 init_mgmt_queue(ieee);
2512 if (ieee->tx_pending.txb) {
2513 rtllib_txb_free(ieee->tx_pending.txb);
2514 ieee->tx_pending.txb = NULL;
2515 }
2516 ieee->queue_stop = 0;
2517 spin_unlock_irqrestore(&ieee->lock, flags);
2518
2519 }
2520 EXPORT_SYMBOL(rtllib_reset_queue);
2521
2522 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2523 {
2524 unsigned int i;
2525
2526 for (i = 0; i < ieee->dev->num_tx_queues; i++)
2527 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2528
2529 netif_tx_stop_all_queues(ieee->dev);
2530 }
2531
2532 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2533 {
2534 netif_tx_wake_all_queues(ieee->dev);
2535 }
2536
2537 /* called in user context only */
2538 static void rtllib_start_master_bss(struct rtllib_device *ieee)
2539 {
2540 ieee->assoc_id = 1;
2541
2542 if (ieee->current_network.ssid_len == 0) {
2543 strncpy(ieee->current_network.ssid,
2544 RTLLIB_DEFAULT_TX_ESSID,
2545 IW_ESSID_MAX_SIZE);
2546
2547 ieee->current_network.ssid_len =
2548 strlen(RTLLIB_DEFAULT_TX_ESSID);
2549 ieee->ssid_set = 1;
2550 }
2551
2552 ether_addr_copy(ieee->current_network.bssid, ieee->dev->dev_addr);
2553
2554 ieee->set_chan(ieee->dev, ieee->current_network.channel);
2555 ieee->state = RTLLIB_LINKED;
2556 ieee->link_change(ieee->dev);
2557 notify_wx_assoc_event(ieee);
2558
2559 if (ieee->data_hard_resume)
2560 ieee->data_hard_resume(ieee->dev);
2561
2562 netif_carrier_on(ieee->dev);
2563 }
2564
2565 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2566 {
2567 /* reset hardware status */
2568 if (ieee->raw_tx) {
2569 if (ieee->data_hard_resume)
2570 ieee->data_hard_resume(ieee->dev);
2571
2572 netif_carrier_on(ieee->dev);
2573 }
2574 }
2575
2576 static void rtllib_start_ibss_wq(void *data)
2577 {
2578 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2579 struct rtllib_device, start_ibss_wq);
2580 /* iwconfig mode ad-hoc will schedule this and return
2581 * on the other hand this will block further iwconfig SET
2582 * operations because of the wx_mutex hold.
2583 * Anyway some most set operations set a flag to speed-up
2584 * (abort) this wq (when syncro scanning) before sleeping
2585 * on the mutex
2586 */
2587 if (!ieee->proto_started) {
2588 netdev_info(ieee->dev, "==========oh driver down return\n");
2589 return;
2590 }
2591 mutex_lock(&ieee->wx_mutex);
2592
2593 if (ieee->current_network.ssid_len == 0) {
2594 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2595 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2596 ieee->ssid_set = 1;
2597 }
2598
2599 ieee->state = RTLLIB_NOLINK;
2600 ieee->mode = IEEE_G;
2601 /* check if we have this cell in our network list */
2602 rtllib_softmac_check_all_nets(ieee);
2603
2604
2605 /* if not then the state is not linked. Maybe the user switched to
2606 * ad-hoc mode just after being in monitor mode, or just after
2607 * being very few time in managed mode (so the card have had no
2608 * time to scan all the chans..) or we have just run up the iface
2609 * after setting ad-hoc mode. So we have to give another try..
2610 * Here, in ibss mode, should be safe to do this without extra care
2611 * (in bss mode we had to make sure no-one tried to associate when
2612 * we had just checked the ieee->state and we was going to start the
2613 * scan) because in ibss mode the rtllib_new_net function, when
2614 * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2615 * so, at worst, we waste a bit of time to initiate an unneeded syncro
2616 * scan, that will stop at the first round because it sees the state
2617 * associated.
2618 */
2619 if (ieee->state == RTLLIB_NOLINK)
2620 rtllib_start_scan_syncro(ieee, 0);
2621
2622 /* the network definitively is not here.. create a new cell */
2623 if (ieee->state == RTLLIB_NOLINK) {
2624 netdev_info(ieee->dev, "creating new IBSS cell\n");
2625 ieee->current_network.channel = ieee->IbssStartChnl;
2626 if (!ieee->wap_set)
2627 eth_random_addr(ieee->current_network.bssid);
2628
2629 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2630
2631 ieee->current_network.rates_len = 4;
2632
2633 ieee->current_network.rates[0] =
2634 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2635 ieee->current_network.rates[1] =
2636 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2637 ieee->current_network.rates[2] =
2638 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2639 ieee->current_network.rates[3] =
2640 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2641
2642 } else
2643 ieee->current_network.rates_len = 0;
2644
2645 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2646 ieee->current_network.rates_ex_len = 8;
2647
2648 ieee->current_network.rates_ex[0] =
2649 RTLLIB_OFDM_RATE_6MB;
2650 ieee->current_network.rates_ex[1] =
2651 RTLLIB_OFDM_RATE_9MB;
2652 ieee->current_network.rates_ex[2] =
2653 RTLLIB_OFDM_RATE_12MB;
2654 ieee->current_network.rates_ex[3] =
2655 RTLLIB_OFDM_RATE_18MB;
2656 ieee->current_network.rates_ex[4] =
2657 RTLLIB_OFDM_RATE_24MB;
2658 ieee->current_network.rates_ex[5] =
2659 RTLLIB_OFDM_RATE_36MB;
2660 ieee->current_network.rates_ex[6] =
2661 RTLLIB_OFDM_RATE_48MB;
2662 ieee->current_network.rates_ex[7] =
2663 RTLLIB_OFDM_RATE_54MB;
2664
2665 ieee->rate = 108;
2666 } else {
2667 ieee->current_network.rates_ex_len = 0;
2668 ieee->rate = 22;
2669 }
2670
2671 ieee->current_network.qos_data.supported = 0;
2672 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2673 ieee->current_network.mode = ieee->mode;
2674 ieee->current_network.atim_window = 0;
2675 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2676 }
2677
2678 netdev_info(ieee->dev, "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2679 if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2680 HTUseDefaultSetting(ieee);
2681 else
2682 ieee->pHTInfo->bCurrentHTSupport = false;
2683
2684 ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2685 (u8 *)(&ieee->state));
2686
2687 ieee->state = RTLLIB_LINKED;
2688 ieee->link_change(ieee->dev);
2689
2690 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2691 if (ieee->LedControlHandler != NULL)
2692 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2693
2694 rtllib_start_send_beacons(ieee);
2695
2696 notify_wx_assoc_event(ieee);
2697
2698 if (ieee->data_hard_resume)
2699 ieee->data_hard_resume(ieee->dev);
2700
2701 netif_carrier_on(ieee->dev);
2702
2703 mutex_unlock(&ieee->wx_mutex);
2704 }
2705
2706 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2707 {
2708 schedule_delayed_work(&ieee->start_ibss_wq, msecs_to_jiffies(150));
2709 }
2710
2711 /* this is called only in user context, with wx_mutex held */
2712 static void rtllib_start_bss(struct rtllib_device *ieee)
2713 {
2714 unsigned long flags;
2715
2716 if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2717 if (!ieee->bGlobalDomain)
2718 return;
2719 }
2720 /* check if we have already found the net we
2721 * are interested in (if any).
2722 * if not (we are disassociated and we are not
2723 * in associating / authenticating phase) start the background scanning.
2724 */
2725 rtllib_softmac_check_all_nets(ieee);
2726
2727 /* ensure no-one start an associating process (thus setting
2728 * the ieee->state to rtllib_ASSOCIATING) while we
2729 * have just checked it and we are going to enable scan.
2730 * The rtllib_new_net function is always called with
2731 * lock held (from both rtllib_softmac_check_all_nets and
2732 * the rx path), so we cannot be in the middle of such function
2733 */
2734 spin_lock_irqsave(&ieee->lock, flags);
2735
2736 if (ieee->state == RTLLIB_NOLINK)
2737 rtllib_start_scan(ieee);
2738 spin_unlock_irqrestore(&ieee->lock, flags);
2739 }
2740
2741 static void rtllib_link_change_wq(void *data)
2742 {
2743 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2744 struct rtllib_device, link_change_wq);
2745 ieee->link_change(ieee->dev);
2746 }
2747 /* called only in userspace context */
2748 void rtllib_disassociate(struct rtllib_device *ieee)
2749 {
2750 netif_carrier_off(ieee->dev);
2751 if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2752 rtllib_reset_queue(ieee);
2753
2754 if (ieee->data_hard_stop)
2755 ieee->data_hard_stop(ieee->dev);
2756 if (IS_DOT11D_ENABLE(ieee))
2757 Dot11d_Reset(ieee);
2758 ieee->state = RTLLIB_NOLINK;
2759 ieee->is_set_key = false;
2760 ieee->wap_set = 0;
2761
2762 schedule_delayed_work(&ieee->link_change_wq, 0);
2763
2764 notify_wx_assoc_event(ieee);
2765 }
2766
2767 static void rtllib_associate_retry_wq(void *data)
2768 {
2769 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2770 struct rtllib_device, associate_retry_wq);
2771 unsigned long flags;
2772
2773 mutex_lock(&ieee->wx_mutex);
2774 if (!ieee->proto_started)
2775 goto exit;
2776
2777 if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2778 goto exit;
2779
2780 /* until we do not set the state to RTLLIB_NOLINK
2781 * there are no possibility to have someone else trying
2782 * to start an association procedure (we get here with
2783 * ieee->state = RTLLIB_ASSOCIATING).
2784 * When we set the state to RTLLIB_NOLINK it is possible
2785 * that the RX path run an attempt to associate, but
2786 * both rtllib_softmac_check_all_nets and the
2787 * RX path works with ieee->lock held so there are no
2788 * problems. If we are still disassociated then start a scan.
2789 * the lock here is necessary to ensure no one try to start
2790 * an association procedure when we have just checked the
2791 * state and we are going to start the scan.
2792 */
2793 ieee->beinretry = true;
2794 ieee->state = RTLLIB_NOLINK;
2795
2796 rtllib_softmac_check_all_nets(ieee);
2797
2798 spin_lock_irqsave(&ieee->lock, flags);
2799
2800 if (ieee->state == RTLLIB_NOLINK)
2801 rtllib_start_scan(ieee);
2802 spin_unlock_irqrestore(&ieee->lock, flags);
2803
2804 ieee->beinretry = false;
2805 exit:
2806 mutex_unlock(&ieee->wx_mutex);
2807 }
2808
2809 static struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2810 {
2811 const u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2812
2813 struct sk_buff *skb;
2814 struct rtllib_probe_response *b;
2815
2816 skb = rtllib_probe_resp(ieee, broadcast_addr);
2817
2818 if (!skb)
2819 return NULL;
2820
2821 b = (struct rtllib_probe_response *) skb->data;
2822 b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2823
2824 return skb;
2825
2826 }
2827
2828 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2829 {
2830 struct sk_buff *skb;
2831 struct rtllib_probe_response *b;
2832
2833 skb = rtllib_get_beacon_(ieee);
2834 if (!skb)
2835 return NULL;
2836
2837 b = (struct rtllib_probe_response *) skb->data;
2838 b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2839
2840 if (ieee->seq_ctrl[0] == 0xFFF)
2841 ieee->seq_ctrl[0] = 0;
2842 else
2843 ieee->seq_ctrl[0]++;
2844
2845 return skb;
2846 }
2847 EXPORT_SYMBOL(rtllib_get_beacon);
2848
2849 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2850 u8 shutdown)
2851 {
2852 rtllib_stop_scan_syncro(ieee);
2853 mutex_lock(&ieee->wx_mutex);
2854 rtllib_stop_protocol(ieee, shutdown);
2855 mutex_unlock(&ieee->wx_mutex);
2856 }
2857 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2858
2859
2860 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2861 {
2862 if (!ieee->proto_started)
2863 return;
2864
2865 if (shutdown) {
2866 ieee->proto_started = 0;
2867 ieee->proto_stoppping = 1;
2868 if (ieee->rtllib_ips_leave != NULL)
2869 ieee->rtllib_ips_leave(ieee->dev);
2870 }
2871
2872 rtllib_stop_send_beacons(ieee);
2873 del_timer_sync(&ieee->associate_timer);
2874 cancel_delayed_work_sync(&ieee->associate_retry_wq);
2875 cancel_delayed_work_sync(&ieee->start_ibss_wq);
2876 cancel_delayed_work_sync(&ieee->link_change_wq);
2877 rtllib_stop_scan(ieee);
2878
2879 if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2880 ieee->state = RTLLIB_NOLINK;
2881
2882 if (ieee->state == RTLLIB_LINKED) {
2883 if (ieee->iw_mode == IW_MODE_INFRA)
2884 SendDisassociation(ieee, 1, WLAN_REASON_DEAUTH_LEAVING);
2885 rtllib_disassociate(ieee);
2886 }
2887
2888 if (shutdown) {
2889 RemoveAllTS(ieee);
2890 ieee->proto_stoppping = 0;
2891 }
2892 kfree(ieee->assocreq_ies);
2893 ieee->assocreq_ies = NULL;
2894 ieee->assocreq_ies_len = 0;
2895 kfree(ieee->assocresp_ies);
2896 ieee->assocresp_ies = NULL;
2897 ieee->assocresp_ies_len = 0;
2898 }
2899
2900 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2901 {
2902 mutex_lock(&ieee->wx_mutex);
2903 rtllib_start_protocol(ieee);
2904 mutex_unlock(&ieee->wx_mutex);
2905 }
2906 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
2907
2908 void rtllib_start_protocol(struct rtllib_device *ieee)
2909 {
2910 short ch = 0;
2911 int i = 0;
2912
2913 rtllib_update_active_chan_map(ieee);
2914
2915 if (ieee->proto_started)
2916 return;
2917
2918 ieee->proto_started = 1;
2919
2920 if (ieee->current_network.channel == 0) {
2921 do {
2922 ch++;
2923 if (ch > MAX_CHANNEL_NUMBER)
2924 return; /* no channel found */
2925 } while (!ieee->active_channel_map[ch]);
2926 ieee->current_network.channel = ch;
2927 }
2928
2929 if (ieee->current_network.beacon_interval == 0)
2930 ieee->current_network.beacon_interval = 100;
2931
2932 for (i = 0; i < 17; i++) {
2933 ieee->last_rxseq_num[i] = -1;
2934 ieee->last_rxfrag_num[i] = -1;
2935 ieee->last_packet_time[i] = 0;
2936 }
2937
2938 if (ieee->UpdateBeaconInterruptHandler)
2939 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
2940
2941 ieee->wmm_acm = 0;
2942 /* if the user set the MAC of the ad-hoc cell and then
2943 * switch to managed mode, shall we make sure that association
2944 * attempts does not fail just because the user provide the essid
2945 * and the nic is still checking for the AP MAC ??
2946 */
2947 if (ieee->iw_mode == IW_MODE_INFRA) {
2948 rtllib_start_bss(ieee);
2949 } else if (ieee->iw_mode == IW_MODE_ADHOC) {
2950 if (ieee->UpdateBeaconInterruptHandler)
2951 ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
2952
2953 rtllib_start_ibss(ieee);
2954
2955 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2956 rtllib_start_master_bss(ieee);
2957 } else if (ieee->iw_mode == IW_MODE_MONITOR) {
2958 rtllib_start_monitor_mode(ieee);
2959 }
2960 }
2961
2962 void rtllib_softmac_init(struct rtllib_device *ieee)
2963 {
2964 int i;
2965
2966 memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
2967
2968 ieee->state = RTLLIB_NOLINK;
2969 for (i = 0; i < 5; i++)
2970 ieee->seq_ctrl[i] = 0;
2971 ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
2972 if (!ieee->pDot11dInfo)
2973 netdev_err(ieee->dev, "Can't alloc memory for DOT11D\n");
2974 ieee->LinkDetectInfo.SlotIndex = 0;
2975 ieee->LinkDetectInfo.SlotNum = 2;
2976 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
2977 ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
2978 ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
2979 ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
2980 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
2981 ieee->bIsAggregateFrame = false;
2982 ieee->assoc_id = 0;
2983 ieee->queue_stop = 0;
2984 ieee->scanning_continue = 0;
2985 ieee->softmac_features = 0;
2986 ieee->wap_set = 0;
2987 ieee->ssid_set = 0;
2988 ieee->proto_started = 0;
2989 ieee->proto_stoppping = 0;
2990 ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
2991 ieee->rate = 22;
2992 ieee->ps = RTLLIB_PS_DISABLED;
2993 ieee->sta_sleep = LPS_IS_WAKE;
2994
2995 ieee->Regdot11HTOperationalRateSet[0] = 0xff;
2996 ieee->Regdot11HTOperationalRateSet[1] = 0xff;
2997 ieee->Regdot11HTOperationalRateSet[4] = 0x01;
2998
2999 ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3000 ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3001 ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3002
3003 ieee->FirstIe_InScan = false;
3004 ieee->actscanning = false;
3005 ieee->beinretry = false;
3006 ieee->is_set_key = false;
3007 init_mgmt_queue(ieee);
3008
3009 ieee->tx_pending.txb = NULL;
3010
3011 setup_timer(&ieee->associate_timer,
3012 rtllib_associate_abort_cb,
3013 (unsigned long) ieee);
3014
3015 setup_timer(&ieee->beacon_timer,
3016 rtllib_send_beacon_cb,
3017 (unsigned long) ieee);
3018
3019 INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3020 (void *)rtllib_link_change_wq, ieee);
3021 INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3022 (void *)rtllib_start_ibss_wq, ieee);
3023 INIT_WORK_RSL(&ieee->associate_complete_wq,
3024 (void *)rtllib_associate_complete_wq, ieee);
3025 INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3026 (void *)rtllib_associate_procedure_wq, ieee);
3027 INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3028 (void *)rtllib_softmac_scan_wq, ieee);
3029 INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3030 (void *)rtllib_associate_retry_wq, ieee);
3031 INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3032 ieee);
3033
3034 mutex_init(&ieee->wx_mutex);
3035 mutex_init(&ieee->scan_mutex);
3036 mutex_init(&ieee->ips_mutex);
3037
3038 spin_lock_init(&ieee->mgmt_tx_lock);
3039 spin_lock_init(&ieee->beacon_lock);
3040
3041 tasklet_init(&ieee->ps_task,
3042 (void(*)(unsigned long)) rtllib_sta_ps,
3043 (unsigned long)ieee);
3044
3045 }
3046
3047 void rtllib_softmac_free(struct rtllib_device *ieee)
3048 {
3049 mutex_lock(&ieee->wx_mutex);
3050 kfree(ieee->pDot11dInfo);
3051 ieee->pDot11dInfo = NULL;
3052 del_timer_sync(&ieee->associate_timer);
3053
3054 cancel_delayed_work_sync(&ieee->associate_retry_wq);
3055 cancel_delayed_work_sync(&ieee->associate_procedure_wq);
3056 cancel_delayed_work_sync(&ieee->softmac_scan_wq);
3057 cancel_delayed_work_sync(&ieee->start_ibss_wq);
3058 cancel_delayed_work_sync(&ieee->hw_wakeup_wq);
3059 cancel_delayed_work_sync(&ieee->hw_sleep_wq);
3060 cancel_delayed_work_sync(&ieee->link_change_wq);
3061 cancel_work_sync(&ieee->associate_complete_wq);
3062 cancel_work_sync(&ieee->ips_leave_wq);
3063 cancel_work_sync(&ieee->wx_sync_scan_wq);
3064 mutex_unlock(&ieee->wx_mutex);
3065 tasklet_kill(&ieee->ps_task);
3066 }
3067
3068 /********************************************************
3069 * Start of WPA code. *
3070 * this is stolen from the ipw2200 driver *
3071 ********************************************************/
3072
3073
3074 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3075 {
3076 /* This is called when wpa_supplicant loads and closes the driver
3077 * interface.
3078 */
3079 netdev_info(ieee->dev, "%s WPA\n", value ? "enabling" : "disabling");
3080 ieee->wpa_enabled = value;
3081 eth_zero_addr(ieee->ap_mac_addr);
3082 return 0;
3083 }
3084
3085
3086 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3087 int wpa_ie_len)
3088 {
3089 /* make sure WPA is enabled */
3090 rtllib_wpa_enable(ieee, 1);
3091
3092 rtllib_disassociate(ieee);
3093 }
3094
3095
3096 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3097 {
3098
3099 int ret = 0;
3100
3101 switch (command) {
3102 case IEEE_MLME_STA_DEAUTH:
3103 break;
3104
3105 case IEEE_MLME_STA_DISASSOC:
3106 rtllib_disassociate(ieee);
3107 break;
3108
3109 default:
3110 netdev_info(ieee->dev, "Unknown MLME request: %d\n", command);
3111 ret = -EOPNOTSUPP;
3112 }
3113
3114 return ret;
3115 }
3116
3117
3118 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3119 struct ieee_param *param, int plen)
3120 {
3121 u8 *buf;
3122
3123 if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3124 (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3125 return -EINVAL;
3126
3127 if (param->u.wpa_ie.len) {
3128 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
3129 GFP_KERNEL);
3130 if (buf == NULL)
3131 return -ENOMEM;
3132
3133 kfree(ieee->wpa_ie);
3134 ieee->wpa_ie = buf;
3135 ieee->wpa_ie_len = param->u.wpa_ie.len;
3136 } else {
3137 kfree(ieee->wpa_ie);
3138 ieee->wpa_ie = NULL;
3139 ieee->wpa_ie_len = 0;
3140 }
3141
3142 rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3143 return 0;
3144 }
3145
3146 #define AUTH_ALG_OPEN_SYSTEM 0x1
3147 #define AUTH_ALG_SHARED_KEY 0x2
3148 #define AUTH_ALG_LEAP 0x4
3149 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3150 {
3151
3152 struct rtllib_security sec = {
3153 .flags = SEC_AUTH_MODE,
3154 };
3155
3156 if (value & AUTH_ALG_SHARED_KEY) {
3157 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3158 ieee->open_wep = 0;
3159 ieee->auth_mode = 1;
3160 } else if (value & AUTH_ALG_OPEN_SYSTEM) {
3161 sec.auth_mode = WLAN_AUTH_OPEN;
3162 ieee->open_wep = 1;
3163 ieee->auth_mode = 0;
3164 } else if (value & AUTH_ALG_LEAP) {
3165 sec.auth_mode = WLAN_AUTH_LEAP >> 6;
3166 ieee->open_wep = 1;
3167 ieee->auth_mode = 2;
3168 }
3169
3170
3171 if (ieee->set_security)
3172 ieee->set_security(ieee->dev, &sec);
3173
3174 return 0;
3175 }
3176
3177 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3178 {
3179 int ret = 0;
3180 unsigned long flags;
3181
3182 switch (name) {
3183 case IEEE_PARAM_WPA_ENABLED:
3184 ret = rtllib_wpa_enable(ieee, value);
3185 break;
3186
3187 case IEEE_PARAM_TKIP_COUNTERMEASURES:
3188 ieee->tkip_countermeasures = value;
3189 break;
3190
3191 case IEEE_PARAM_DROP_UNENCRYPTED:
3192 {
3193 /* HACK:
3194 *
3195 * wpa_supplicant calls set_wpa_enabled when the driver
3196 * is loaded and unloaded, regardless of if WPA is being
3197 * used. No other calls are made which can be used to
3198 * determine if encryption will be used or not prior to
3199 * association being expected. If encryption is not being
3200 * used, drop_unencrypted is set to false, else true -- we
3201 * can use this to determine if the CAP_PRIVACY_ON bit should
3202 * be set.
3203 */
3204 struct rtllib_security sec = {
3205 .flags = SEC_ENABLED,
3206 .enabled = value,
3207 };
3208 ieee->drop_unencrypted = value;
3209 /* We only change SEC_LEVEL for open mode. Others
3210 * are set by ipw_wpa_set_encryption.
3211 */
3212 if (!value) {
3213 sec.flags |= SEC_LEVEL;
3214 sec.level = SEC_LEVEL_0;
3215 } else {
3216 sec.flags |= SEC_LEVEL;
3217 sec.level = SEC_LEVEL_1;
3218 }
3219 if (ieee->set_security)
3220 ieee->set_security(ieee->dev, &sec);
3221 break;
3222 }
3223
3224 case IEEE_PARAM_PRIVACY_INVOKED:
3225 ieee->privacy_invoked = value;
3226 break;
3227
3228 case IEEE_PARAM_AUTH_ALGS:
3229 ret = rtllib_wpa_set_auth_algs(ieee, value);
3230 break;
3231
3232 case IEEE_PARAM_IEEE_802_1X:
3233 ieee->ieee802_1x = value;
3234 break;
3235 case IEEE_PARAM_WPAX_SELECT:
3236 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3237 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3238 break;
3239
3240 default:
3241 netdev_info(ieee->dev, "Unknown WPA param: %d\n", name);
3242 ret = -EOPNOTSUPP;
3243 }
3244
3245 return ret;
3246 }
3247
3248 /* implementation borrowed from hostap driver */
3249 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3250 struct ieee_param *param, int param_len,
3251 u8 is_mesh)
3252 {
3253 int ret = 0;
3254 struct lib80211_crypto_ops *ops;
3255 struct lib80211_crypt_data **crypt;
3256
3257 struct rtllib_security sec = {
3258 .flags = 0,
3259 };
3260
3261 param->u.crypt.err = 0;
3262 param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3263
3264 if (param_len !=
3265 (int) ((char *) param->u.crypt.key - (char *) param) +
3266 param->u.crypt.key_len) {
3267 netdev_info(ieee->dev, "Len mismatch %d, %d\n", param_len,
3268 param->u.crypt.key_len);
3269 return -EINVAL;
3270 }
3271 if (is_broadcast_ether_addr(param->sta_addr)) {
3272 if (param->u.crypt.idx >= NUM_WEP_KEYS)
3273 return -EINVAL;
3274 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
3275 } else {
3276 return -EINVAL;
3277 }
3278
3279 if (strcmp(param->u.crypt.alg, "none") == 0) {
3280 if (crypt) {
3281 sec.enabled = 0;
3282 sec.level = SEC_LEVEL_0;
3283 sec.flags |= SEC_ENABLED | SEC_LEVEL;
3284 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3285 }
3286 goto done;
3287 }
3288 sec.enabled = 1;
3289 sec.flags |= SEC_ENABLED;
3290
3291 /* IPW HW cannot build TKIP MIC, host decryption still needed. */
3292 if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3293 strcmp(param->u.crypt.alg, "R-TKIP"))
3294 goto skip_host_crypt;
3295
3296 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3297 if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3298 request_module("rtllib_crypt_wep");
3299 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3300 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3301 request_module("rtllib_crypt_tkip");
3302 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3303 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3304 request_module("rtllib_crypt_ccmp");
3305 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3306 }
3307 if (ops == NULL) {
3308 netdev_info(ieee->dev, "unknown crypto alg '%s'\n",
3309 param->u.crypt.alg);
3310 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3311 ret = -EINVAL;
3312 goto done;
3313 }
3314 if (*crypt == NULL || (*crypt)->ops != ops) {
3315 struct lib80211_crypt_data *new_crypt;
3316
3317 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3318
3319 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
3320 if (new_crypt == NULL) {
3321 ret = -ENOMEM;
3322 goto done;
3323 }
3324 new_crypt->ops = ops;
3325 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
3326 new_crypt->priv =
3327 new_crypt->ops->init(param->u.crypt.idx);
3328
3329 if (new_crypt->priv == NULL) {
3330 kfree(new_crypt);
3331 param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3332 ret = -EINVAL;
3333 goto done;
3334 }
3335
3336 *crypt = new_crypt;
3337 }
3338
3339 if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3340 (*crypt)->ops->set_key(param->u.crypt.key,
3341 param->u.crypt.key_len, param->u.crypt.seq,
3342 (*crypt)->priv) < 0) {
3343 netdev_info(ieee->dev, "key setting failed\n");
3344 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3345 ret = -EINVAL;
3346 goto done;
3347 }
3348
3349 skip_host_crypt:
3350 if (param->u.crypt.set_tx) {
3351 ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
3352 sec.active_key = param->u.crypt.idx;
3353 sec.flags |= SEC_ACTIVE_KEY;
3354 } else
3355 sec.flags &= ~SEC_ACTIVE_KEY;
3356
3357 memcpy(sec.keys[param->u.crypt.idx],
3358 param->u.crypt.key,
3359 param->u.crypt.key_len);
3360 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3361 sec.flags |= (1 << param->u.crypt.idx);
3362
3363 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3364 sec.flags |= SEC_LEVEL;
3365 sec.level = SEC_LEVEL_1;
3366 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3367 sec.flags |= SEC_LEVEL;
3368 sec.level = SEC_LEVEL_2;
3369 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3370 sec.flags |= SEC_LEVEL;
3371 sec.level = SEC_LEVEL_3;
3372 }
3373 done:
3374 if (ieee->set_security)
3375 ieee->set_security(ieee->dev, &sec);
3376
3377 /* Do not reset port if card is in Managed mode since resetting will
3378 * generate new IEEE 802.11 authentication which may end up in looping
3379 * with IEEE 802.1X. If your hardware requires a reset after WEP
3380 * configuration (for example... Prism2), implement the reset_port in
3381 * the callbacks structures used to initialize the 802.11 stack.
3382 */
3383 if (ieee->reset_on_keychange &&
3384 ieee->iw_mode != IW_MODE_INFRA &&
3385 ieee->reset_port &&
3386 ieee->reset_port(ieee->dev)) {
3387 netdev_info(ieee->dev, "reset_port failed\n");
3388 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3389 return -EINVAL;
3390 }
3391
3392 return ret;
3393 }
3394
3395 static inline struct sk_buff *
3396 rtllib_disauth_skb(struct rtllib_network *beacon,
3397 struct rtllib_device *ieee, u16 asRsn)
3398 {
3399 struct sk_buff *skb;
3400 struct rtllib_disauth *disauth;
3401 int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3402
3403 skb = dev_alloc_skb(len);
3404 if (!skb)
3405 return NULL;
3406
3407 skb_reserve(skb, ieee->tx_headroom);
3408
3409 disauth = skb_put(skb, sizeof(struct rtllib_disauth));
3410 disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3411 disauth->header.duration_id = 0;
3412
3413 ether_addr_copy(disauth->header.addr1, beacon->bssid);
3414 ether_addr_copy(disauth->header.addr2, ieee->dev->dev_addr);
3415 ether_addr_copy(disauth->header.addr3, beacon->bssid);
3416
3417 disauth->reason = cpu_to_le16(asRsn);
3418 return skb;
3419 }
3420
3421 static inline struct sk_buff *
3422 rtllib_disassociate_skb(struct rtllib_network *beacon,
3423 struct rtllib_device *ieee, u16 asRsn)
3424 {
3425 struct sk_buff *skb;
3426 struct rtllib_disassoc *disass;
3427 int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3428
3429 skb = dev_alloc_skb(len);
3430
3431 if (!skb)
3432 return NULL;
3433
3434 skb_reserve(skb, ieee->tx_headroom);
3435
3436 disass = skb_put(skb, sizeof(struct rtllib_disassoc));
3437 disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3438 disass->header.duration_id = 0;
3439
3440 ether_addr_copy(disass->header.addr1, beacon->bssid);
3441 ether_addr_copy(disass->header.addr2, ieee->dev->dev_addr);
3442 ether_addr_copy(disass->header.addr3, beacon->bssid);
3443
3444 disass->reason = cpu_to_le16(asRsn);
3445 return skb;
3446 }
3447
3448 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3449 {
3450 struct rtllib_network *beacon = &ieee->current_network;
3451 struct sk_buff *skb;
3452
3453 if (deauth)
3454 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3455 else
3456 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3457
3458 if (skb)
3459 softmac_mgmt_xmit(skb, ieee);
3460 }
3461
3462 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3463 {
3464 static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3465 static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3466 int wpa_ie_len = ieee->wpa_ie_len;
3467 struct lib80211_crypt_data *crypt;
3468 int encrypt;
3469
3470 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3471 encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3472 || (ieee->host_encrypt && crypt && crypt->ops &&
3473 (strcmp(crypt->ops->name, "R-WEP") == 0));
3474
3475 /* simply judge */
3476 if (encrypt && (wpa_ie_len == 0)) {
3477 return SEC_ALG_WEP;
3478 } else if ((wpa_ie_len != 0)) {
3479 if (((ieee->wpa_ie[0] == 0xdd) &&
3480 (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3481 ((ieee->wpa_ie[0] == 0x30) &&
3482 (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3483 return SEC_ALG_CCMP;
3484 else
3485 return SEC_ALG_TKIP;
3486 } else {
3487 return SEC_ALG_NONE;
3488 }
3489 }
3490
3491 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3492 u8 is_mesh)
3493 {
3494 struct ieee_param *param;
3495 int ret = 0;
3496
3497 mutex_lock(&ieee->wx_mutex);
3498
3499 if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3500 ret = -EINVAL;
3501 goto out;
3502 }
3503
3504 param = memdup_user(p->pointer, p->length);
3505 if (IS_ERR(param)) {
3506 ret = PTR_ERR(param);
3507 goto out;
3508 }
3509
3510 switch (param->cmd) {
3511 case IEEE_CMD_SET_WPA_PARAM:
3512 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3513 param->u.wpa_param.value);
3514 break;
3515
3516 case IEEE_CMD_SET_WPA_IE:
3517 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3518 break;
3519
3520 case IEEE_CMD_SET_ENCRYPTION:
3521 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3522 break;
3523
3524 case IEEE_CMD_MLME:
3525 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3526 param->u.mlme.reason_code);
3527 break;
3528
3529 default:
3530 netdev_info(ieee->dev, "Unknown WPA supplicant request: %d\n",
3531 param->cmd);
3532 ret = -EOPNOTSUPP;
3533 break;
3534 }
3535
3536 if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3537 ret = -EFAULT;
3538
3539 kfree(param);
3540 out:
3541 mutex_unlock(&ieee->wx_mutex);
3542
3543 return ret;
3544 }
3545 EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
3546
3547 static void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3548 {
3549 u8 OpMode;
3550 u8 i;
3551 bool bFilterOutNonAssociatedBSSID = false;
3552
3553 rtllib->state = RTLLIB_NOLINK;
3554
3555 for (i = 0; i < 6; i++)
3556 rtllib->current_network.bssid[i] = 0x55;
3557
3558 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3559 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3560 rtllib->current_network.bssid);
3561 OpMode = RT_OP_MODE_NO_LINK;
3562 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3563 rtllib_stop_send_beacons(rtllib);
3564
3565 bFilterOutNonAssociatedBSSID = false;
3566 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3567 (u8 *)(&bFilterOutNonAssociatedBSSID));
3568 notify_wx_assoc_event(rtllib);
3569
3570 }
3571
3572 static void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib,
3573 u8 *asSta, u8 asRsn)
3574 {
3575 u8 i;
3576 u8 OpMode;
3577
3578 RemovePeerTS(rtllib, asSta);
3579
3580 if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) {
3581 rtllib->state = RTLLIB_NOLINK;
3582
3583 for (i = 0; i < 6; i++)
3584 rtllib->current_network.bssid[i] = 0x22;
3585 OpMode = RT_OP_MODE_NO_LINK;
3586 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3587 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3588 (u8 *)(&OpMode));
3589 rtllib_disassociate(rtllib);
3590
3591 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3592 rtllib->current_network.bssid);
3593
3594 }
3595
3596 }
3597
3598 static void
3599 rtllib_MgntDisconnectAP(
3600 struct rtllib_device *rtllib,
3601 u8 asRsn
3602 )
3603 {
3604 bool bFilterOutNonAssociatedBSSID = false;
3605
3606 bFilterOutNonAssociatedBSSID = false;
3607 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3608 (u8 *)(&bFilterOutNonAssociatedBSSID));
3609 rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3610 asRsn);
3611
3612 rtllib->state = RTLLIB_NOLINK;
3613 }
3614
3615 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3616 {
3617 if (rtllib->ps != RTLLIB_PS_DISABLED)
3618 rtllib->sta_wake_up(rtllib->dev);
3619
3620 if (rtllib->state == RTLLIB_LINKED) {
3621 if (rtllib->iw_mode == IW_MODE_ADHOC)
3622 rtllib_MgntDisconnectIBSS(rtllib);
3623 if (rtllib->iw_mode == IW_MODE_INFRA)
3624 rtllib_MgntDisconnectAP(rtllib, asRsn);
3625
3626 }
3627
3628 return true;
3629 }
3630 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3631
3632 void notify_wx_assoc_event(struct rtllib_device *ieee)
3633 {
3634 union iwreq_data wrqu;
3635
3636 if (ieee->cannot_notify)
3637 return;
3638
3639 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3640 if (ieee->state == RTLLIB_LINKED)
3641 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3642 ETH_ALEN);
3643 else {
3644
3645 netdev_info(ieee->dev, "%s(): Tell user space disconnected\n",
3646 __func__);
3647 eth_zero_addr(wrqu.ap_addr.sa_data);
3648 }
3649 wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3650 }
3651 EXPORT_SYMBOL(notify_wx_assoc_event);
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