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Merge tag 'iio-for-4.1a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio...
[deliverable/linux.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 "dot11d.h"
24
25 short rtllib_is_54g(struct rtllib_network *net)
26 {
27 return (net->rates_ex_len > 0) || (net->rates_len > 4);
28 }
29
30 short rtllib_is_shortslot(const struct rtllib_network *net)
31 {
32 return net->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME;
33 }
34
35 /* returns the total length needed for placing the RATE MFIE
36 * tag and the EXTENDED RATE MFIE tag if needed.
37 * It encludes two bytes per tag for the tag itself and its len
38 */
39 static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
40 {
41 unsigned int rate_len = 0;
42
43 if (ieee->modulation & RTLLIB_CCK_MODULATION)
44 rate_len = RTLLIB_CCK_RATE_LEN + 2;
45
46 if (ieee->modulation & RTLLIB_OFDM_MODULATION)
47
48 rate_len += RTLLIB_OFDM_RATE_LEN + 2;
49
50 return rate_len;
51 }
52
53 /* place the MFIE rate, tag to the memory (double) pointed.
54 * Then it updates the pointer so that
55 * it points after the new MFIE tag added.
56 */
57 static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
58 {
59 u8 *tag = *tag_p;
60
61 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
62 *tag++ = MFIE_TYPE_RATES;
63 *tag++ = 4;
64 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
65 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
66 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
67 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
68 }
69
70 /* We may add an option for custom rates that specific HW
71 * might support */
72 *tag_p = tag;
73 }
74
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 *tag_p = tag;
94 }
95
96 static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
97 {
98 u8 *tag = *tag_p;
99
100 *tag++ = MFIE_TYPE_GENERIC;
101 *tag++ = 7;
102 *tag++ = 0x00;
103 *tag++ = 0x50;
104 *tag++ = 0xf2;
105 *tag++ = 0x02;
106 *tag++ = 0x00;
107 *tag++ = 0x01;
108 *tag++ = MAX_SP_Len;
109 *tag_p = tag;
110 }
111
112 void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
113 {
114 u8 *tag = *tag_p;
115
116 *tag++ = MFIE_TYPE_GENERIC;
117 *tag++ = 7;
118 *tag++ = 0x00;
119 *tag++ = 0xe0;
120 *tag++ = 0x4c;
121 *tag++ = 0x01;
122 *tag++ = 0x02;
123 *tag++ = 0x11;
124 *tag++ = 0x00;
125
126 *tag_p = tag;
127 netdev_alert(ieee->dev, "This is enable turbo mode IE process\n");
128 }
129
130 static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
131 {
132 int nh;
133
134 nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
135
136 /*
137 * if the queue is full but we have newer frames then
138 * just overwrites the oldest.
139 *
140 * if (nh == ieee->mgmt_queue_tail)
141 * return -1;
142 */
143 ieee->mgmt_queue_head = nh;
144 ieee->mgmt_queue_ring[nh] = skb;
145
146 }
147
148 static struct sk_buff *dequeue_mgmt(struct rtllib_device *ieee)
149 {
150 struct sk_buff *ret;
151
152 if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head)
153 return NULL;
154
155 ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail];
156
157 ieee->mgmt_queue_tail =
158 (ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM;
159
160 return ret;
161 }
162
163 static void init_mgmt_queue(struct rtllib_device *ieee)
164 {
165 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
166 }
167
168
169 u8
170 MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
171 {
172 u16 i;
173 u8 QueryRate = 0;
174 u8 BasicRate;
175
176
177 for (i = 0; i < ieee->current_network.rates_len; i++) {
178 BasicRate = ieee->current_network.rates[i]&0x7F;
179 if (!rtllib_is_cck_rate(BasicRate)) {
180 if (QueryRate == 0) {
181 QueryRate = BasicRate;
182 } else {
183 if (BasicRate < QueryRate)
184 QueryRate = BasicRate;
185 }
186 }
187 }
188
189 if (QueryRate == 0) {
190 QueryRate = 12;
191 netdev_info(ieee->dev, "No BasicRate found!!\n");
192 }
193 return QueryRate;
194 }
195
196 static u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
197 {
198 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
199 u8 rate;
200
201 if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
202 rate = 0x0c;
203 else
204 rate = ieee->basic_rate & 0x7f;
205
206 if (rate == 0) {
207 if (ieee->mode == IEEE_A ||
208 ieee->mode == IEEE_N_5G ||
209 (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
210 rate = 0x0c;
211 else
212 rate = 0x02;
213 }
214
215 return rate;
216 }
217
218 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
219 {
220 unsigned long flags;
221 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
222 struct rtllib_hdr_3addr *header =
223 (struct rtllib_hdr_3addr *) skb->data;
224
225 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
226
227 spin_lock_irqsave(&ieee->lock, flags);
228
229 /* called with 2nd param 0, no mgmt lock required */
230 rtllib_sta_wakeup(ieee, 0);
231
232 if (le16_to_cpu(header->frame_ctl) == RTLLIB_STYPE_BEACON)
233 tcb_desc->queue_index = BEACON_QUEUE;
234 else
235 tcb_desc->queue_index = MGNT_QUEUE;
236
237 if (ieee->disable_mgnt_queue)
238 tcb_desc->queue_index = HIGH_QUEUE;
239
240 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
241 tcb_desc->RATRIndex = 7;
242 tcb_desc->bTxDisableRateFallBack = 1;
243 tcb_desc->bTxUseDriverAssingedRate = 1;
244 if (single) {
245 if (ieee->queue_stop) {
246 enqueue_mgmt(ieee, skb);
247 } else {
248 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
249
250 if (ieee->seq_ctrl[0] == 0xFFF)
251 ieee->seq_ctrl[0] = 0;
252 else
253 ieee->seq_ctrl[0]++;
254
255 /* avoid watchdog triggers */
256 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
257 ieee->basic_rate);
258 }
259
260 spin_unlock_irqrestore(&ieee->lock, flags);
261 } else {
262 spin_unlock_irqrestore(&ieee->lock, flags);
263 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
264
265 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
266
267 if (ieee->seq_ctrl[0] == 0xFFF)
268 ieee->seq_ctrl[0] = 0;
269 else
270 ieee->seq_ctrl[0]++;
271
272 /* check whether the managed packet queued greater than 5 */
273 if (!ieee->check_nic_enough_desc(ieee->dev, tcb_desc->queue_index) ||
274 (skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) != 0) ||
275 (ieee->queue_stop)) {
276 /* insert the skb packet to the management queue */
277 /* as for the completion function, it does not need
278 * to check it any more.
279 * */
280 netdev_info(ieee->dev,
281 "%s():insert to waitqueue, queue_index:%d!\n",
282 __func__, tcb_desc->queue_index);
283 skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
284 skb);
285 } else {
286 ieee->softmac_hard_start_xmit(skb, ieee->dev);
287 }
288 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
289 }
290 }
291
292 inline void softmac_ps_mgmt_xmit(struct sk_buff *skb,
293 struct rtllib_device *ieee)
294 {
295 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
296 struct rtllib_hdr_3addr *header =
297 (struct rtllib_hdr_3addr *) skb->data;
298 u16 fc, type, stype;
299 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
300
301 fc = le16_to_cpu(header->frame_ctl);
302 type = WLAN_FC_GET_TYPE(fc);
303 stype = WLAN_FC_GET_STYPE(fc);
304
305
306 if (stype != RTLLIB_STYPE_PSPOLL)
307 tcb_desc->queue_index = MGNT_QUEUE;
308 else
309 tcb_desc->queue_index = HIGH_QUEUE;
310
311 if (ieee->disable_mgnt_queue)
312 tcb_desc->queue_index = HIGH_QUEUE;
313
314
315 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
316 tcb_desc->RATRIndex = 7;
317 tcb_desc->bTxDisableRateFallBack = 1;
318 tcb_desc->bTxUseDriverAssingedRate = 1;
319 if (single) {
320 if (type != RTLLIB_FTYPE_CTL) {
321 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
322
323 if (ieee->seq_ctrl[0] == 0xFFF)
324 ieee->seq_ctrl[0] = 0;
325 else
326 ieee->seq_ctrl[0]++;
327
328 }
329 /* avoid watchdog triggers */
330 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
331 ieee->basic_rate);
332
333 } else {
334 if (type != RTLLIB_FTYPE_CTL) {
335 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
336
337 if (ieee->seq_ctrl[0] == 0xFFF)
338 ieee->seq_ctrl[0] = 0;
339 else
340 ieee->seq_ctrl[0]++;
341 }
342 ieee->softmac_hard_start_xmit(skb, ieee->dev);
343
344 }
345 }
346
347 static inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
348 {
349 unsigned int len, rate_len;
350 u8 *tag;
351 struct sk_buff *skb;
352 struct rtllib_probe_request *req;
353
354 len = ieee->current_network.ssid_len;
355
356 rate_len = rtllib_MFIE_rate_len(ieee);
357
358 skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
359 2 + len + rate_len + ieee->tx_headroom);
360
361 if (!skb)
362 return NULL;
363
364 skb_reserve(skb, ieee->tx_headroom);
365
366 req = (struct rtllib_probe_request *) skb_put(skb,
367 sizeof(struct rtllib_probe_request));
368 req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
369 req->header.duration_id = 0;
370
371 memset(req->header.addr1, 0xff, ETH_ALEN);
372 memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
373 memset(req->header.addr3, 0xff, ETH_ALEN);
374
375 tag = (u8 *) skb_put(skb, len + 2 + rate_len);
376
377 *tag++ = MFIE_TYPE_SSID;
378 *tag++ = len;
379 memcpy(tag, ieee->current_network.ssid, len);
380 tag += len;
381
382 rtllib_MFIE_Brate(ieee, &tag);
383 rtllib_MFIE_Grate(ieee, &tag);
384
385 return skb;
386 }
387
388 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
389
390 static void rtllib_send_beacon(struct rtllib_device *ieee)
391 {
392 struct sk_buff *skb;
393
394 if (!ieee->ieee_up)
395 return;
396 skb = rtllib_get_beacon_(ieee);
397
398 if (skb) {
399 softmac_mgmt_xmit(skb, ieee);
400 ieee->softmac_stats.tx_beacons++;
401 }
402
403 if (ieee->beacon_txing && ieee->ieee_up)
404 mod_timer(&ieee->beacon_timer, jiffies +
405 (msecs_to_jiffies(ieee->current_network.beacon_interval - 5)));
406 }
407
408
409 static void rtllib_send_beacon_cb(unsigned long _ieee)
410 {
411 struct rtllib_device *ieee =
412 (struct rtllib_device *) _ieee;
413 unsigned long flags;
414
415 spin_lock_irqsave(&ieee->beacon_lock, flags);
416 rtllib_send_beacon(ieee);
417 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
418 }
419
420 /*
421 * Description:
422 * Enable network monitor mode, all rx packets will be received.
423 */
424 void rtllib_EnableNetMonitorMode(struct net_device *dev,
425 bool bInitState)
426 {
427 struct rtllib_device *ieee = netdev_priv_rsl(dev);
428
429 netdev_info(dev, "========>Enter Monitor Mode\n");
430
431 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
432 }
433
434
435 /*
436 * Description:
437 * Disable network network monitor mode, only packets destinated to
438 * us will be received.
439 */
440 void rtllib_DisableNetMonitorMode(struct net_device *dev,
441 bool bInitState)
442 {
443 struct rtllib_device *ieee = netdev_priv_rsl(dev);
444
445 netdev_info(dev, "========>Exit Monitor Mode\n");
446
447 ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
448 }
449
450
451 /*
452 * Description:
453 * This enables the specialized promiscuous mode required by Intel.
454 * In this mode, Intel intends to hear traffics from/to other STAs in the
455 * same BSS. Therefore we don't have to disable checking BSSID and we only need
456 * to allow all dest. BUT: if we enable checking BSSID then we can't recv
457 * packets from other STA.
458 */
459 void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
460 bool bInitState)
461 {
462 bool bFilterOutNonAssociatedBSSID = false;
463
464 struct rtllib_device *ieee = netdev_priv_rsl(dev);
465
466 netdev_info(dev, "========>Enter Intel Promiscuous Mode\n");
467
468 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
469 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
470 (u8 *)&bFilterOutNonAssociatedBSSID);
471
472 ieee->bNetPromiscuousMode = true;
473 }
474 EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode);
475
476
477 /*
478 * Description:
479 * This disables the specialized promiscuous mode required by Intel.
480 * See MgntEnableIntelPromiscuousMode for detail.
481 */
482 void rtllib_DisableIntelPromiscuousMode(struct net_device *dev,
483 bool bInitState)
484 {
485 bool bFilterOutNonAssociatedBSSID = true;
486
487 struct rtllib_device *ieee = netdev_priv_rsl(dev);
488
489 netdev_info(dev, "========>Exit Intel Promiscuous Mode\n");
490
491 ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
492 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
493 (u8 *)&bFilterOutNonAssociatedBSSID);
494
495 ieee->bNetPromiscuousMode = false;
496 }
497 EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode);
498
499 static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh)
500 {
501 struct sk_buff *skb;
502
503 skb = rtllib_probe_req(ieee);
504 if (skb) {
505 softmac_mgmt_xmit(skb, ieee);
506 ieee->softmac_stats.tx_probe_rq++;
507 }
508 }
509
510
511 void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh)
512 {
513 if (ieee->active_scan && (ieee->softmac_features &
514 IEEE_SOFTMAC_PROBERQ)) {
515 rtllib_send_probe(ieee, 0);
516 rtllib_send_probe(ieee, 0);
517 }
518 }
519
520 static void rtllib_softmac_hint11d_wq(void *data)
521 {
522 }
523
524 void rtllib_update_active_chan_map(struct rtllib_device *ieee)
525 {
526 memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map,
527 MAX_CHANNEL_NUMBER+1);
528 }
529
530 /* this performs syncro scan blocking the caller until all channels
531 * in the allowed channel map has been checked.
532 */
533 void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
534 {
535 union iwreq_data wrqu;
536 short ch = 0;
537
538 rtllib_update_active_chan_map(ieee);
539
540 ieee->be_scan_inprogress = true;
541
542 down(&ieee->scan_sem);
543
544 while (1) {
545 do {
546 ch++;
547 if (ch > MAX_CHANNEL_NUMBER)
548 goto out; /* scan completed */
549 } while (!ieee->active_channel_map[ch]);
550
551 /* this function can be called in two situations
552 * 1- We have switched to ad-hoc mode and we are
553 * performing a complete syncro scan before conclude
554 * there are no interesting cell and to create a
555 * new one. In this case the link state is
556 * RTLLIB_NOLINK until we found an interesting cell.
557 * If so the ieee8021_new_net, called by the RX path
558 * will set the state to RTLLIB_LINKED, so we stop
559 * scanning
560 * 2- We are linked and the root uses run iwlist scan.
561 * So we switch to RTLLIB_LINKED_SCANNING to remember
562 * that we are still logically linked (not interested in
563 * new network events, despite for updating the net list,
564 * but we are temporarly 'unlinked' as the driver shall
565 * not filter RX frames and the channel is changing.
566 * So the only situation in which are interested is to check
567 * if the state become LINKED because of the #1 situation
568 */
569
570 if (ieee->state == RTLLIB_LINKED)
571 goto out;
572 if (ieee->sync_scan_hurryup) {
573 netdev_info(ieee->dev,
574 "============>sync_scan_hurryup out\n");
575 goto out;
576 }
577
578 ieee->set_chan(ieee->dev, ch);
579 if (ieee->active_channel_map[ch] == 1)
580 rtllib_send_probe_requests(ieee, 0);
581
582 /* this prevent excessive time wait when we
583 * need to wait for a syncro scan to end..
584 */
585 msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME);
586 }
587 out:
588 ieee->actscanning = false;
589 ieee->sync_scan_hurryup = 0;
590
591 if (ieee->state >= RTLLIB_LINKED) {
592 if (IS_DOT11D_ENABLE(ieee))
593 DOT11D_ScanComplete(ieee);
594 }
595 up(&ieee->scan_sem);
596
597 ieee->be_scan_inprogress = false;
598
599 memset(&wrqu, 0, sizeof(wrqu));
600 wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
601 }
602
603 static void rtllib_softmac_scan_wq(void *data)
604 {
605 struct rtllib_device *ieee = container_of_dwork_rsl(data,
606 struct rtllib_device, softmac_scan_wq);
607 u8 last_channel = ieee->current_network.channel;
608
609 rtllib_update_active_chan_map(ieee);
610
611 if (!ieee->ieee_up)
612 return;
613 if (rtllib_act_scanning(ieee, true))
614 return;
615
616 down(&ieee->scan_sem);
617
618 if (ieee->eRFPowerState == eRfOff) {
619 netdev_info(ieee->dev,
620 "======>%s():rf state is eRfOff, return\n",
621 __func__);
622 goto out1;
623 }
624
625 do {
626 ieee->current_network.channel =
627 (ieee->current_network.channel + 1) %
628 MAX_CHANNEL_NUMBER;
629 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) {
630 if (!ieee->active_channel_map[ieee->current_network.channel])
631 ieee->current_network.channel = 6;
632 goto out; /* no good chans */
633 }
634 } while (!ieee->active_channel_map[ieee->current_network.channel]);
635
636 if (ieee->scanning_continue == 0)
637 goto out;
638
639 ieee->set_chan(ieee->dev, ieee->current_network.channel);
640
641 if (ieee->active_channel_map[ieee->current_network.channel] == 1)
642 rtllib_send_probe_requests(ieee, 0);
643
644 queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq,
645 msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME));
646
647 up(&ieee->scan_sem);
648 return;
649
650 out:
651 if (IS_DOT11D_ENABLE(ieee))
652 DOT11D_ScanComplete(ieee);
653 ieee->current_network.channel = last_channel;
654
655 out1:
656 ieee->actscanning = false;
657 ieee->scan_watch_dog = 0;
658 ieee->scanning_continue = 0;
659 up(&ieee->scan_sem);
660 }
661
662
663
664 static void rtllib_beacons_start(struct rtllib_device *ieee)
665 {
666 unsigned long flags;
667
668 spin_lock_irqsave(&ieee->beacon_lock, flags);
669
670 ieee->beacon_txing = 1;
671 rtllib_send_beacon(ieee);
672
673 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
674 }
675
676 static void rtllib_beacons_stop(struct rtllib_device *ieee)
677 {
678 unsigned long flags;
679
680 spin_lock_irqsave(&ieee->beacon_lock, flags);
681
682 ieee->beacon_txing = 0;
683 del_timer_sync(&ieee->beacon_timer);
684
685 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
686
687 }
688
689
690 void rtllib_stop_send_beacons(struct rtllib_device *ieee)
691 {
692 if (ieee->stop_send_beacons)
693 ieee->stop_send_beacons(ieee->dev);
694 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
695 rtllib_beacons_stop(ieee);
696 }
697 EXPORT_SYMBOL(rtllib_stop_send_beacons);
698
699
700 void rtllib_start_send_beacons(struct rtllib_device *ieee)
701 {
702 if (ieee->start_send_beacons)
703 ieee->start_send_beacons(ieee->dev);
704 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
705 rtllib_beacons_start(ieee);
706 }
707 EXPORT_SYMBOL(rtllib_start_send_beacons);
708
709
710 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
711 {
712 down(&ieee->scan_sem);
713 ieee->scan_watch_dog = 0;
714 if (ieee->scanning_continue == 1) {
715 ieee->scanning_continue = 0;
716 ieee->actscanning = false;
717
718 cancel_delayed_work(&ieee->softmac_scan_wq);
719 }
720
721 up(&ieee->scan_sem);
722 }
723
724 void rtllib_stop_scan(struct rtllib_device *ieee)
725 {
726 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
727 rtllib_softmac_stop_scan(ieee);
728 } else {
729 if (ieee->rtllib_stop_hw_scan)
730 ieee->rtllib_stop_hw_scan(ieee->dev);
731 }
732 }
733 EXPORT_SYMBOL(rtllib_stop_scan);
734
735 void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
736 {
737 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
738 ieee->sync_scan_hurryup = 1;
739 } else {
740 if (ieee->rtllib_stop_hw_scan)
741 ieee->rtllib_stop_hw_scan(ieee->dev);
742 }
743 }
744 EXPORT_SYMBOL(rtllib_stop_scan_syncro);
745
746 bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
747 {
748 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
749 if (sync_scan)
750 return ieee->be_scan_inprogress;
751 else
752 return ieee->actscanning || ieee->be_scan_inprogress;
753 } else {
754 return test_bit(STATUS_SCANNING, &ieee->status);
755 }
756 }
757 EXPORT_SYMBOL(rtllib_act_scanning);
758
759 /* called with ieee->lock held */
760 static void rtllib_start_scan(struct rtllib_device *ieee)
761 {
762 RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
763 if (ieee->rtllib_ips_leave_wq != NULL)
764 ieee->rtllib_ips_leave_wq(ieee->dev);
765
766 if (IS_DOT11D_ENABLE(ieee)) {
767 if (IS_COUNTRY_IE_VALID(ieee))
768 RESET_CIE_WATCHDOG(ieee);
769 }
770 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
771 if (ieee->scanning_continue == 0) {
772 ieee->actscanning = true;
773 ieee->scanning_continue = 1;
774 queue_delayed_work_rsl(ieee->wq,
775 &ieee->softmac_scan_wq, 0);
776 }
777 } else {
778 if (ieee->rtllib_start_hw_scan)
779 ieee->rtllib_start_hw_scan(ieee->dev);
780 }
781 }
782
783 /* called with wx_sem held */
784 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
785 {
786 if (IS_DOT11D_ENABLE(ieee)) {
787 if (IS_COUNTRY_IE_VALID(ieee))
788 RESET_CIE_WATCHDOG(ieee);
789 }
790 ieee->sync_scan_hurryup = 0;
791 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
792 rtllib_softmac_scan_syncro(ieee, is_mesh);
793 } else {
794 if (ieee->rtllib_start_hw_scan)
795 ieee->rtllib_start_hw_scan(ieee->dev);
796 }
797 }
798 EXPORT_SYMBOL(rtllib_start_scan_syncro);
799
800 inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon,
801 struct rtllib_device *ieee, int challengelen, u8 *daddr)
802 {
803 struct sk_buff *skb;
804 struct rtllib_authentication *auth;
805 int len = 0;
806
807 len = sizeof(struct rtllib_authentication) + challengelen +
808 ieee->tx_headroom + 4;
809 skb = dev_alloc_skb(len);
810
811 if (!skb)
812 return NULL;
813
814 skb_reserve(skb, ieee->tx_headroom);
815
816 auth = (struct rtllib_authentication *)
817 skb_put(skb, sizeof(struct rtllib_authentication));
818
819 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
820 if (challengelen)
821 auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP);
822
823 auth->header.duration_id = cpu_to_le16(0x013a);
824 memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN);
825 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
826 memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN);
827 if (ieee->auth_mode == 0)
828 auth->algorithm = WLAN_AUTH_OPEN;
829 else if (ieee->auth_mode == 1)
830 auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY);
831 else if (ieee->auth_mode == 2)
832 auth->algorithm = WLAN_AUTH_OPEN;
833 auth->transaction = cpu_to_le16(ieee->associate_seq);
834 ieee->associate_seq++;
835
836 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
837
838 return skb;
839 }
840
841 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, u8 *dest)
842 {
843 u8 *tag;
844 int beacon_size;
845 struct rtllib_probe_response *beacon_buf;
846 struct sk_buff *skb = NULL;
847 int encrypt;
848 int atim_len, erp_len;
849 struct lib80211_crypt_data *crypt;
850
851 char *ssid = ieee->current_network.ssid;
852 int ssid_len = ieee->current_network.ssid_len;
853 int rate_len = ieee->current_network.rates_len+2;
854 int rate_ex_len = ieee->current_network.rates_ex_len;
855 int wpa_ie_len = ieee->wpa_ie_len;
856 u8 erpinfo_content = 0;
857
858 u8 *tmp_ht_cap_buf = NULL;
859 u8 tmp_ht_cap_len = 0;
860 u8 *tmp_ht_info_buf = NULL;
861 u8 tmp_ht_info_len = 0;
862 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
863 u8 *tmp_generic_ie_buf = NULL;
864 u8 tmp_generic_ie_len = 0;
865
866 if (rate_ex_len > 0)
867 rate_ex_len += 2;
868
869 if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
870 atim_len = 4;
871 else
872 atim_len = 0;
873
874 if ((ieee->current_network.mode == IEEE_G) ||
875 (ieee->current_network.mode == IEEE_N_24G &&
876 ieee->pHTInfo->bCurSuppCCK)) {
877 erp_len = 3;
878 erpinfo_content = 0;
879 if (ieee->current_network.buseprotection)
880 erpinfo_content |= ERP_UseProtection;
881 } else
882 erp_len = 0;
883
884 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
885 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
886 ((0 == strcmp(crypt->ops->name, "R-WEP") || wpa_ie_len));
887 if (ieee->pHTInfo->bCurrentHTSupport) {
888 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
889 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
890 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
891 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
892 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
893 &tmp_ht_cap_len, encrypt, false);
894 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
895 encrypt);
896
897 if (pHTInfo->bRegRT2RTAggregation) {
898 tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
899 tmp_generic_ie_len =
900 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
901 HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
902 &tmp_generic_ie_len);
903 }
904 }
905
906 beacon_size = sizeof(struct rtllib_probe_response)+2+
907 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
908 + wpa_ie_len + ieee->tx_headroom;
909 skb = dev_alloc_skb(beacon_size);
910 if (!skb)
911 return NULL;
912
913 skb_reserve(skb, ieee->tx_headroom);
914
915 beacon_buf = (struct rtllib_probe_response *) skb_put(skb,
916 (beacon_size - ieee->tx_headroom));
917 memcpy(beacon_buf->header.addr1, dest, ETH_ALEN);
918 memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
919 memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN);
920
921 beacon_buf->header.duration_id = 0;
922 beacon_buf->beacon_interval =
923 cpu_to_le16(ieee->current_network.beacon_interval);
924 beacon_buf->capability =
925 cpu_to_le16(ieee->current_network.capability &
926 WLAN_CAPABILITY_IBSS);
927 beacon_buf->capability |=
928 cpu_to_le16(ieee->current_network.capability &
929 WLAN_CAPABILITY_SHORT_PREAMBLE);
930
931 if (ieee->short_slot && (ieee->current_network.capability &
932 WLAN_CAPABILITY_SHORT_SLOT_TIME))
933 beacon_buf->capability |=
934 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
935
936 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
937 if (encrypt)
938 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
939
940
941 beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
942 beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
943 beacon_buf->info_element[0].len = ssid_len;
944
945 tag = (u8 *) beacon_buf->info_element[0].data;
946
947 memcpy(tag, ssid, ssid_len);
948
949 tag += ssid_len;
950
951 *(tag++) = MFIE_TYPE_RATES;
952 *(tag++) = rate_len-2;
953 memcpy(tag, ieee->current_network.rates, rate_len-2);
954 tag += rate_len-2;
955
956 *(tag++) = MFIE_TYPE_DS_SET;
957 *(tag++) = 1;
958 *(tag++) = ieee->current_network.channel;
959
960 if (atim_len) {
961 u16 val16;
962 *(tag++) = MFIE_TYPE_IBSS_SET;
963 *(tag++) = 2;
964 val16 = ieee->current_network.atim_window;
965 memcpy((u8 *)tag, (u8 *)&val16, 2);
966 tag += 2;
967 }
968
969 if (erp_len) {
970 *(tag++) = MFIE_TYPE_ERP;
971 *(tag++) = 1;
972 *(tag++) = erpinfo_content;
973 }
974 if (rate_ex_len) {
975 *(tag++) = MFIE_TYPE_RATES_EX;
976 *(tag++) = rate_ex_len-2;
977 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
978 tag += rate_ex_len-2;
979 }
980
981 if (wpa_ie_len) {
982 if (ieee->iw_mode == IW_MODE_ADHOC)
983 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
984 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
985 tag += ieee->wpa_ie_len;
986 }
987 return skb;
988 }
989
990 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
991 {
992 struct sk_buff *skb;
993 u8 *tag;
994
995 struct lib80211_crypt_data *crypt;
996 struct rtllib_assoc_response_frame *assoc;
997 short encrypt;
998
999 unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
1000 int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
1001 ieee->tx_headroom;
1002
1003 skb = dev_alloc_skb(len);
1004
1005 if (!skb)
1006 return NULL;
1007
1008 skb_reserve(skb, ieee->tx_headroom);
1009
1010 assoc = (struct rtllib_assoc_response_frame *)
1011 skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
1012
1013 assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
1014 memcpy(assoc->header.addr1, dest, ETH_ALEN);
1015 memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1016 memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1017 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
1018 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
1019
1020
1021 if (ieee->short_slot)
1022 assoc->capability |=
1023 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1024
1025 if (ieee->host_encrypt)
1026 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1027 else
1028 crypt = NULL;
1029
1030 encrypt = (crypt && crypt->ops);
1031
1032 if (encrypt)
1033 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1034
1035 assoc->status = 0;
1036 assoc->aid = cpu_to_le16(ieee->assoc_id);
1037 if (ieee->assoc_id == 0x2007)
1038 ieee->assoc_id = 0;
1039 else
1040 ieee->assoc_id++;
1041
1042 tag = (u8 *) skb_put(skb, rate_len);
1043 rtllib_MFIE_Brate(ieee, &tag);
1044 rtllib_MFIE_Grate(ieee, &tag);
1045
1046 return skb;
1047 }
1048
1049 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1050 u8 *dest)
1051 {
1052 struct sk_buff *skb = NULL;
1053 struct rtllib_authentication *auth;
1054 int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1055
1056 skb = dev_alloc_skb(len);
1057 if (!skb)
1058 return NULL;
1059
1060 skb->len = sizeof(struct rtllib_authentication);
1061
1062 skb_reserve(skb, ieee->tx_headroom);
1063
1064 auth = (struct rtllib_authentication *)
1065 skb_put(skb, sizeof(struct rtllib_authentication));
1066
1067 auth->status = cpu_to_le16(status);
1068 auth->transaction = cpu_to_le16(2);
1069 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1070
1071 memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1072 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1073 memcpy(auth->header.addr1, dest, ETH_ALEN);
1074 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1075 return skb;
1076
1077
1078 }
1079
1080 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1081 {
1082 struct sk_buff *skb;
1083 struct rtllib_hdr_3addr *hdr;
1084
1085 skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1086 if (!skb)
1087 return NULL;
1088
1089 skb_reserve(skb, ieee->tx_headroom);
1090
1091 hdr = (struct rtllib_hdr_3addr *)skb_put(skb,
1092 sizeof(struct rtllib_hdr_3addr));
1093
1094 memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN);
1095 memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN);
1096 memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN);
1097
1098 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1099 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1100 (pwr ? RTLLIB_FCTL_PM : 0));
1101
1102 return skb;
1103
1104
1105 }
1106
1107 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1108 {
1109 struct sk_buff *skb;
1110 struct rtllib_pspoll_hdr *hdr;
1111
1112 skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1113 if (!skb)
1114 return NULL;
1115
1116 skb_reserve(skb, ieee->tx_headroom);
1117
1118 hdr = (struct rtllib_pspoll_hdr *)skb_put(skb,
1119 sizeof(struct rtllib_pspoll_hdr));
1120
1121 memcpy(hdr->bssid, ieee->current_network.bssid, ETH_ALEN);
1122 memcpy(hdr->ta, ieee->dev->dev_addr, ETH_ALEN);
1123
1124 hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1125 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1126 RTLLIB_FCTL_PM);
1127
1128 return skb;
1129
1130 }
1131
1132 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1133 {
1134 struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1135
1136 if (buf)
1137 softmac_mgmt_xmit(buf, ieee);
1138 }
1139
1140
1141 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1142 {
1143 struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1144
1145 if (buf)
1146 softmac_mgmt_xmit(buf, ieee);
1147 }
1148
1149
1150 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1151 {
1152 struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1153
1154 if (buf)
1155 softmac_mgmt_xmit(buf, ieee);
1156 }
1157
1158
1159 inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1160 {
1161 int i = 0;
1162
1163 do {
1164 if ((ieee->PMKIDList[i].bUsed) &&
1165 (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1166 break;
1167 i++;
1168 } while (i < NUM_PMKID_CACHE);
1169
1170 if (i == NUM_PMKID_CACHE)
1171 i = -1;
1172 return i;
1173 }
1174
1175 inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon,
1176 struct rtllib_device *ieee)
1177 {
1178 struct sk_buff *skb;
1179 struct rtllib_assoc_request_frame *hdr;
1180 u8 *tag, *ies;
1181 int i;
1182 u8 *ht_cap_buf = NULL;
1183 u8 ht_cap_len = 0;
1184 u8 *realtek_ie_buf = NULL;
1185 u8 realtek_ie_len = 0;
1186 int wpa_ie_len = ieee->wpa_ie_len;
1187 int wps_ie_len = ieee->wps_ie_len;
1188 unsigned int ckip_ie_len = 0;
1189 unsigned int ccxrm_ie_len = 0;
1190 unsigned int cxvernum_ie_len = 0;
1191 struct lib80211_crypt_data *crypt;
1192 int encrypt;
1193 int PMKCacheIdx;
1194
1195 unsigned int rate_len = (beacon->rates_len ?
1196 (beacon->rates_len + 2) : 0) +
1197 (beacon->rates_ex_len ? (beacon->rates_ex_len) +
1198 2 : 0);
1199
1200 unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1201 unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1202
1203 int len = 0;
1204
1205 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1206 if (crypt != NULL)
1207 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1208 ((0 == strcmp(crypt->ops->name, "R-WEP") ||
1209 wpa_ie_len));
1210 else
1211 encrypt = 0;
1212
1213 if ((ieee->rtllib_ap_sec_type &&
1214 (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1215 ieee->bForcedBgMode) {
1216 ieee->pHTInfo->bEnableHT = 0;
1217 ieee->mode = WIRELESS_MODE_G;
1218 }
1219
1220 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1221 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1222 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1223 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1224 encrypt, true);
1225 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1226 realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1227 realtek_ie_len =
1228 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1229 HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1230 &realtek_ie_len);
1231 }
1232 }
1233
1234 if (beacon->bCkipSupported)
1235 ckip_ie_len = 30+2;
1236 if (beacon->bCcxRmEnable)
1237 ccxrm_ie_len = 6+2;
1238 if (beacon->BssCcxVerNumber >= 2)
1239 cxvernum_ie_len = 5+2;
1240
1241 PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1242 if (PMKCacheIdx >= 0) {
1243 wpa_ie_len += 18;
1244 netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n",
1245 wpa_ie_len);
1246 }
1247 len = sizeof(struct rtllib_assoc_request_frame) + 2
1248 + beacon->ssid_len
1249 + rate_len
1250 + wpa_ie_len
1251 + wps_ie_len
1252 + wmm_info_len
1253 + turbo_info_len
1254 + ht_cap_len
1255 + realtek_ie_len
1256 + ckip_ie_len
1257 + ccxrm_ie_len
1258 + cxvernum_ie_len
1259 + ieee->tx_headroom;
1260
1261 skb = dev_alloc_skb(len);
1262
1263 if (!skb)
1264 return NULL;
1265
1266 skb_reserve(skb, ieee->tx_headroom);
1267
1268 hdr = (struct rtllib_assoc_request_frame *)
1269 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1270
1271
1272 hdr->header.frame_ctl = RTLLIB_STYPE_ASSOC_REQ;
1273 hdr->header.duration_id = cpu_to_le16(37);
1274 memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN);
1275 memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1276 memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN);
1277
1278 memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);
1279
1280 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1281 if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1282 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1283
1284 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1285 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1286
1287 if (ieee->short_slot &&
1288 (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1289 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1290
1291
1292 hdr->listen_interval = cpu_to_le16(beacon->listen_interval);
1293
1294 hdr->info_element[0].id = MFIE_TYPE_SSID;
1295
1296 hdr->info_element[0].len = beacon->ssid_len;
1297 tag = skb_put(skb, beacon->ssid_len);
1298 memcpy(tag, beacon->ssid, beacon->ssid_len);
1299
1300 tag = skb_put(skb, rate_len);
1301
1302 if (beacon->rates_len) {
1303 *tag++ = MFIE_TYPE_RATES;
1304 *tag++ = beacon->rates_len;
1305 for (i = 0; i < beacon->rates_len; i++)
1306 *tag++ = beacon->rates[i];
1307 }
1308
1309 if (beacon->rates_ex_len) {
1310 *tag++ = MFIE_TYPE_RATES_EX;
1311 *tag++ = beacon->rates_ex_len;
1312 for (i = 0; i < beacon->rates_ex_len; i++)
1313 *tag++ = beacon->rates_ex[i];
1314 }
1315
1316 if (beacon->bCkipSupported) {
1317 static const u8 AironetIeOui[] = {0x00, 0x01, 0x66};
1318 u8 CcxAironetBuf[30];
1319 struct octet_string osCcxAironetIE;
1320
1321 memset(CcxAironetBuf, 0, 30);
1322 osCcxAironetIE.Octet = CcxAironetBuf;
1323 osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1324 memcpy(osCcxAironetIE.Octet, AironetIeOui,
1325 sizeof(AironetIeOui));
1326
1327 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1328 (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1329 tag = skb_put(skb, ckip_ie_len);
1330 *tag++ = MFIE_TYPE_AIRONET;
1331 *tag++ = osCcxAironetIE.Length;
1332 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1333 tag += osCcxAironetIE.Length;
1334 }
1335
1336 if (beacon->bCcxRmEnable) {
1337 static const u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01,
1338 0x00};
1339 struct octet_string osCcxRmCap;
1340
1341 osCcxRmCap.Octet = (u8 *) CcxRmCapBuf;
1342 osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1343 tag = skb_put(skb, ccxrm_ie_len);
1344 *tag++ = MFIE_TYPE_GENERIC;
1345 *tag++ = osCcxRmCap.Length;
1346 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1347 tag += osCcxRmCap.Length;
1348 }
1349
1350 if (beacon->BssCcxVerNumber >= 2) {
1351 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1352 struct octet_string osCcxVerNum;
1353
1354 CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1355 osCcxVerNum.Octet = CcxVerNumBuf;
1356 osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1357 tag = skb_put(skb, cxvernum_ie_len);
1358 *tag++ = MFIE_TYPE_GENERIC;
1359 *tag++ = osCcxVerNum.Length;
1360 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1361 tag += osCcxVerNum.Length;
1362 }
1363 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1364 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1365 tag = skb_put(skb, ht_cap_len);
1366 *tag++ = MFIE_TYPE_HT_CAP;
1367 *tag++ = ht_cap_len - 2;
1368 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1369 tag += ht_cap_len - 2;
1370 }
1371 }
1372
1373 if (wpa_ie_len) {
1374 tag = skb_put(skb, ieee->wpa_ie_len);
1375 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
1376
1377 if (PMKCacheIdx >= 0) {
1378 tag = skb_put(skb, 18);
1379 *tag = 1;
1380 *(tag + 1) = 0;
1381 memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1382 16);
1383 }
1384 }
1385 if (wmm_info_len) {
1386 tag = skb_put(skb, wmm_info_len);
1387 rtllib_WMM_Info(ieee, &tag);
1388 }
1389
1390 if (wps_ie_len && ieee->wps_ie) {
1391 tag = skb_put(skb, wps_ie_len);
1392 memcpy(tag, ieee->wps_ie, wps_ie_len);
1393 }
1394
1395 tag = skb_put(skb, turbo_info_len);
1396 if (turbo_info_len)
1397 rtllib_TURBO_Info(ieee, &tag);
1398
1399 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1400 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1401 tag = skb_put(skb, ht_cap_len);
1402 *tag++ = MFIE_TYPE_GENERIC;
1403 *tag++ = ht_cap_len - 2;
1404 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1405 tag += ht_cap_len - 2;
1406 }
1407
1408 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1409 tag = skb_put(skb, realtek_ie_len);
1410 *tag++ = MFIE_TYPE_GENERIC;
1411 *tag++ = realtek_ie_len - 2;
1412 memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1413 }
1414 }
1415
1416 kfree(ieee->assocreq_ies);
1417 ieee->assocreq_ies = NULL;
1418 ies = &(hdr->info_element[0].id);
1419 ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1420 ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
1421 if (ieee->assocreq_ies)
1422 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
1423 else {
1424 netdev_info(ieee->dev,
1425 "%s()Warning: can't alloc memory for assocreq_ies\n",
1426 __func__);
1427 ieee->assocreq_ies_len = 0;
1428 }
1429 return skb;
1430 }
1431
1432 void rtllib_associate_abort(struct rtllib_device *ieee)
1433 {
1434 unsigned long flags;
1435
1436 spin_lock_irqsave(&ieee->lock, flags);
1437
1438 ieee->associate_seq++;
1439
1440 /* don't scan, and avoid to have the RX path possibily
1441 * try again to associate. Even do not react to AUTH or
1442 * ASSOC response. Just wait for the retry wq to be scheduled.
1443 * Here we will check if there are good nets to associate
1444 * with, so we retry or just get back to NO_LINK and scanning
1445 */
1446 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1447 RTLLIB_DEBUG_MGMT("Authentication failed\n");
1448 ieee->softmac_stats.no_auth_rs++;
1449 } else {
1450 RTLLIB_DEBUG_MGMT("Association failed\n");
1451 ieee->softmac_stats.no_ass_rs++;
1452 }
1453
1454 ieee->state = RTLLIB_ASSOCIATING_RETRY;
1455
1456 queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq,
1457 RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1458
1459 spin_unlock_irqrestore(&ieee->lock, flags);
1460 }
1461
1462 static void rtllib_associate_abort_cb(unsigned long dev)
1463 {
1464 rtllib_associate_abort((struct rtllib_device *) dev);
1465 }
1466
1467 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr)
1468 {
1469 struct rtllib_network *beacon = &ieee->current_network;
1470 struct sk_buff *skb;
1471
1472 RTLLIB_DEBUG_MGMT("Stopping scan\n");
1473
1474 ieee->softmac_stats.tx_auth_rq++;
1475
1476 skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1477
1478 if (!skb)
1479 rtllib_associate_abort(ieee);
1480 else {
1481 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING;
1482 RTLLIB_DEBUG_MGMT("Sending authentication request\n");
1483 softmac_mgmt_xmit(skb, ieee);
1484 if (!timer_pending(&ieee->associate_timer)) {
1485 ieee->associate_timer.expires = jiffies + (HZ / 2);
1486 add_timer(&ieee->associate_timer);
1487 }
1488 }
1489 }
1490
1491 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, int chlen)
1492 {
1493 u8 *c;
1494 struct sk_buff *skb;
1495 struct rtllib_network *beacon = &ieee->current_network;
1496
1497 ieee->associate_seq++;
1498 ieee->softmac_stats.tx_auth_rq++;
1499
1500 skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1501
1502 if (!skb)
1503 rtllib_associate_abort(ieee);
1504 else {
1505 c = skb_put(skb, chlen+2);
1506 *(c++) = MFIE_TYPE_CHALLENGE;
1507 *(c++) = chlen;
1508 memcpy(c, challenge, chlen);
1509
1510 RTLLIB_DEBUG_MGMT("Sending authentication challenge response\n");
1511
1512 rtllib_encrypt_fragment(ieee, skb,
1513 sizeof(struct rtllib_hdr_3addr));
1514
1515 softmac_mgmt_xmit(skb, ieee);
1516 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1517 }
1518 kfree(challenge);
1519 }
1520
1521 static void rtllib_associate_step2(struct rtllib_device *ieee)
1522 {
1523 struct sk_buff *skb;
1524 struct rtllib_network *beacon = &ieee->current_network;
1525
1526 del_timer_sync(&ieee->associate_timer);
1527
1528 RTLLIB_DEBUG_MGMT("Sending association request\n");
1529
1530 ieee->softmac_stats.tx_ass_rq++;
1531 skb = rtllib_association_req(beacon, ieee);
1532 if (!skb)
1533 rtllib_associate_abort(ieee);
1534 else {
1535 softmac_mgmt_xmit(skb, ieee);
1536 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1537 }
1538 }
1539
1540 #define CANCELLED 2
1541 static void rtllib_associate_complete_wq(void *data)
1542 {
1543 struct rtllib_device *ieee = (struct rtllib_device *)
1544 container_of_work_rsl(data,
1545 struct rtllib_device,
1546 associate_complete_wq);
1547 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1548 (&(ieee->PowerSaveControl));
1549 netdev_info(ieee->dev, "Associated successfully\n");
1550 if (!ieee->is_silent_reset) {
1551 netdev_info(ieee->dev, "normal associate\n");
1552 notify_wx_assoc_event(ieee);
1553 }
1554
1555 netif_carrier_on(ieee->dev);
1556 ieee->is_roaming = false;
1557 if (rtllib_is_54g(&ieee->current_network) &&
1558 (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1559 ieee->rate = 108;
1560 netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate);
1561 } else {
1562 ieee->rate = 22;
1563 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1564 netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate);
1565 }
1566 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1567 netdev_info(ieee->dev, "Successfully associated, ht enabled\n");
1568 HTOnAssocRsp(ieee);
1569 } else {
1570 netdev_info(ieee->dev,
1571 "Successfully associated, ht not enabled(%d, %d)\n",
1572 ieee->pHTInfo->bCurrentHTSupport,
1573 ieee->pHTInfo->bEnableHT);
1574 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1575 }
1576 ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1577 ieee->current_network.beacon_interval /
1578 500);
1579 if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1580 ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1581 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1582 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1583 }
1584 pPSC->LpsIdleCount = 0;
1585 ieee->link_change(ieee->dev);
1586
1587 if (ieee->is_silent_reset) {
1588 netdev_info(ieee->dev, "silent reset associate\n");
1589 ieee->is_silent_reset = false;
1590 }
1591
1592 if (ieee->data_hard_resume)
1593 ieee->data_hard_resume(ieee->dev);
1594
1595 }
1596
1597 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1598 {
1599 }
1600
1601 static void rtllib_associate_complete(struct rtllib_device *ieee)
1602 {
1603 del_timer_sync(&ieee->associate_timer);
1604
1605 ieee->state = RTLLIB_LINKED;
1606 rtllib_sta_send_associnfo(ieee);
1607
1608 queue_work_rsl(ieee->wq, &ieee->associate_complete_wq);
1609 }
1610
1611 static void rtllib_associate_procedure_wq(void *data)
1612 {
1613 struct rtllib_device *ieee = container_of_dwork_rsl(data,
1614 struct rtllib_device,
1615 associate_procedure_wq);
1616 rtllib_stop_scan_syncro(ieee);
1617 if (ieee->rtllib_ips_leave != NULL)
1618 ieee->rtllib_ips_leave(ieee->dev);
1619 down(&ieee->wx_sem);
1620
1621 if (ieee->data_hard_stop)
1622 ieee->data_hard_stop(ieee->dev);
1623
1624 rtllib_stop_scan(ieee);
1625 RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1626 ieee->current_network.channel);
1627 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1628 if (ieee->eRFPowerState == eRfOff) {
1629 RT_TRACE(COMP_DBG,
1630 "=============>%s():Rf state is eRfOff, schedule ipsleave wq again,return\n",
1631 __func__);
1632 if (ieee->rtllib_ips_leave_wq != NULL)
1633 ieee->rtllib_ips_leave_wq(ieee->dev);
1634 up(&ieee->wx_sem);
1635 return;
1636 }
1637 ieee->associate_seq = 1;
1638
1639 rtllib_associate_step1(ieee, ieee->current_network.bssid);
1640
1641 up(&ieee->wx_sem);
1642 }
1643
1644 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1645 struct rtllib_network *net)
1646 {
1647 u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1648 int tmp_ssid_len = 0;
1649
1650 short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1651
1652 /* we are interested in new new only if we are not associated
1653 * and we are not associating / authenticating
1654 */
1655 if (ieee->state != RTLLIB_NOLINK)
1656 return;
1657
1658 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1659 WLAN_CAPABILITY_ESS))
1660 return;
1661
1662 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1663 WLAN_CAPABILITY_IBSS))
1664 return;
1665
1666 if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1667 (net->channel > ieee->ibss_maxjoin_chal))
1668 return;
1669 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1670 /* if the user specified the AP MAC, we need also the essid
1671 * This could be obtained by beacons or, if the network does not
1672 * broadcast it, it can be put manually.
1673 */
1674 apset = ieee->wap_set;
1675 ssidset = ieee->ssid_set;
1676 ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0');
1677 apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1678 ETH_ALEN) == 0);
1679 if (!ssidbroad) {
1680 ssidmatch = (ieee->current_network.ssid_len ==
1681 net->hidden_ssid_len) &&
1682 (!strncmp(ieee->current_network.ssid,
1683 net->hidden_ssid, net->hidden_ssid_len));
1684 if (net->hidden_ssid_len > 0) {
1685 strncpy(net->ssid, net->hidden_ssid,
1686 net->hidden_ssid_len);
1687 net->ssid_len = net->hidden_ssid_len;
1688 ssidbroad = 1;
1689 }
1690 } else
1691 ssidmatch =
1692 (ieee->current_network.ssid_len == net->ssid_len) &&
1693 (!strncmp(ieee->current_network.ssid, net->ssid,
1694 net->ssid_len));
1695
1696 /* if the user set the AP check if match.
1697 * if the network does not broadcast essid we check the
1698 * user supplied ANY essid
1699 * if the network does broadcast and the user does not set
1700 * essid it is OK
1701 * if the network does broadcast and the user did set essid
1702 * check if essid match
1703 * if the ap is not set, check that the user set the bssid
1704 * and the network does broadcast and that those two bssid match
1705 */
1706 if ((apset && apmatch &&
1707 ((ssidset && ssidbroad && ssidmatch) ||
1708 (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1709 (!apset && ssidset && ssidbroad && ssidmatch) ||
1710 (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1711 /* if the essid is hidden replace it with the
1712 * essid provided by the user.
1713 */
1714 if (!ssidbroad) {
1715 strncpy(tmp_ssid, ieee->current_network.ssid,
1716 IW_ESSID_MAX_SIZE);
1717 tmp_ssid_len = ieee->current_network.ssid_len;
1718 }
1719 memcpy(&ieee->current_network, net,
1720 sizeof(struct rtllib_network));
1721 if (!ssidbroad) {
1722 strncpy(ieee->current_network.ssid, tmp_ssid,
1723 IW_ESSID_MAX_SIZE);
1724 ieee->current_network.ssid_len = tmp_ssid_len;
1725 }
1726 netdev_info(ieee->dev,
1727 "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d, mode:%x cur_net.flags:0x%x\n",
1728 ieee->current_network.ssid,
1729 ieee->current_network.channel,
1730 ieee->current_network.qos_data.supported,
1731 ieee->pHTInfo->bEnableHT,
1732 ieee->current_network.bssht.bdSupportHT,
1733 ieee->current_network.mode,
1734 ieee->current_network.flags);
1735
1736 if ((rtllib_act_scanning(ieee, false)) &&
1737 !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1738 rtllib_stop_scan_syncro(ieee);
1739
1740 ieee->hwscan_ch_bk = ieee->current_network.channel;
1741 HTResetIOTSetting(ieee->pHTInfo);
1742 ieee->wmm_acm = 0;
1743 if (ieee->iw_mode == IW_MODE_INFRA) {
1744 /* Join the network for the first time */
1745 ieee->AsocRetryCount = 0;
1746 if ((ieee->current_network.qos_data.supported == 1) &&
1747 ieee->current_network.bssht.bdSupportHT)
1748 HTResetSelfAndSavePeerSetting(ieee,
1749 &(ieee->current_network));
1750 else
1751 ieee->pHTInfo->bCurrentHTSupport =
1752 false;
1753
1754 ieee->state = RTLLIB_ASSOCIATING;
1755 if (ieee->LedControlHandler != NULL)
1756 ieee->LedControlHandler(ieee->dev,
1757 LED_CTL_START_TO_LINK);
1758 queue_delayed_work_rsl(ieee->wq,
1759 &ieee->associate_procedure_wq, 0);
1760 } else {
1761 if (rtllib_is_54g(&ieee->current_network) &&
1762 (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1763 ieee->rate = 108;
1764 ieee->SetWirelessMode(ieee->dev, IEEE_G);
1765 netdev_info(ieee->dev, "Using G rates\n");
1766 } else {
1767 ieee->rate = 22;
1768 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1769 netdev_info(ieee->dev, "Using B rates\n");
1770 }
1771 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1772 ieee->state = RTLLIB_LINKED;
1773 }
1774 }
1775 }
1776 }
1777
1778 void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1779 {
1780 unsigned long flags;
1781 struct rtllib_network *target;
1782
1783 spin_lock_irqsave(&ieee->lock, flags);
1784
1785 list_for_each_entry(target, &ieee->network_list, list) {
1786
1787 /* if the state become different that NOLINK means
1788 * we had found what we are searching for
1789 */
1790
1791 if (ieee->state != RTLLIB_NOLINK)
1792 break;
1793
1794 if (ieee->scan_age == 0 || time_after(target->last_scanned +
1795 ieee->scan_age, jiffies))
1796 rtllib_softmac_new_net(ieee, target);
1797 }
1798 spin_unlock_irqrestore(&ieee->lock, flags);
1799 }
1800
1801 static inline u16 auth_parse(struct sk_buff *skb, u8 **challenge, int *chlen)
1802 {
1803 struct rtllib_authentication *a;
1804 u8 *t;
1805
1806 if (skb->len < (sizeof(struct rtllib_authentication) -
1807 sizeof(struct rtllib_info_element))) {
1808 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1809 return 0xcafe;
1810 }
1811 *challenge = NULL;
1812 a = (struct rtllib_authentication *) skb->data;
1813 if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1814 t = skb->data + sizeof(struct rtllib_authentication);
1815
1816 if (*(t++) == MFIE_TYPE_CHALLENGE) {
1817 *chlen = *(t++);
1818 *challenge = kmemdup(t, *chlen, GFP_ATOMIC);
1819 if (!*challenge)
1820 return -ENOMEM;
1821 }
1822 }
1823 return cpu_to_le16(a->status);
1824 }
1825
1826 static int auth_rq_parse(struct sk_buff *skb, u8 *dest)
1827 {
1828 struct rtllib_authentication *a;
1829
1830 if (skb->len < (sizeof(struct rtllib_authentication) -
1831 sizeof(struct rtllib_info_element))) {
1832 RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n",
1833 skb->len);
1834 return -1;
1835 }
1836 a = (struct rtllib_authentication *) skb->data;
1837
1838 memcpy(dest, a->header.addr2, ETH_ALEN);
1839
1840 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1841 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1842
1843 return WLAN_STATUS_SUCCESS;
1844 }
1845
1846 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1847 u8 *src)
1848 {
1849 u8 *tag;
1850 u8 *skbend;
1851 u8 *ssid = NULL;
1852 u8 ssidlen = 0;
1853 struct rtllib_hdr_3addr *header =
1854 (struct rtllib_hdr_3addr *) skb->data;
1855 bool bssid_match;
1856
1857 if (skb->len < sizeof(struct rtllib_hdr_3addr))
1858 return -1; /* corrupted */
1859
1860 bssid_match =
1861 (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) &&
1862 (!is_broadcast_ether_addr(header->addr3));
1863 if (bssid_match)
1864 return -1;
1865
1866 memcpy(src, header->addr2, ETH_ALEN);
1867
1868 skbend = (u8 *)skb->data + skb->len;
1869
1870 tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1871
1872 while (tag + 1 < skbend) {
1873 if (*tag == 0) {
1874 ssid = tag + 2;
1875 ssidlen = *(tag + 1);
1876 break;
1877 }
1878 tag++; /* point to the len field */
1879 tag = tag + *(tag); /* point to the last data byte of the tag */
1880 tag++; /* point to the next tag */
1881 }
1882
1883 if (ssidlen == 0)
1884 return 1;
1885
1886 if (!ssid)
1887 return 1; /* ssid not found in tagged param */
1888
1889 return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1890 }
1891
1892 static int assoc_rq_parse(struct sk_buff *skb, u8 *dest)
1893 {
1894 struct rtllib_assoc_request_frame *a;
1895
1896 if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1897 sizeof(struct rtllib_info_element))) {
1898
1899 RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len);
1900 return -1;
1901 }
1902
1903 a = (struct rtllib_assoc_request_frame *) skb->data;
1904
1905 memcpy(dest, a->header.addr2, ETH_ALEN);
1906
1907 return 0;
1908 }
1909
1910 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1911 int *aid)
1912 {
1913 struct rtllib_assoc_response_frame *response_head;
1914 u16 status_code;
1915
1916 if (skb->len < sizeof(struct rtllib_assoc_response_frame)) {
1917 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1918 return 0xcafe;
1919 }
1920
1921 response_head = (struct rtllib_assoc_response_frame *) skb->data;
1922 *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1923
1924 status_code = le16_to_cpu(response_head->status);
1925 if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1926 status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1927 ((ieee->mode == IEEE_G) &&
1928 (ieee->current_network.mode == IEEE_N_24G) &&
1929 (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1930 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1931 } else {
1932 ieee->AsocRetryCount = 0;
1933 }
1934
1935 return le16_to_cpu(response_head->status);
1936 }
1937
1938 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1939 {
1940 u8 dest[ETH_ALEN];
1941
1942 ieee->softmac_stats.rx_probe_rq++;
1943 if (probe_rq_parse(ieee, skb, dest) > 0) {
1944 ieee->softmac_stats.tx_probe_rs++;
1945 rtllib_resp_to_probe(ieee, dest);
1946 }
1947 }
1948
1949 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1950 struct sk_buff *skb)
1951 {
1952 u8 dest[ETH_ALEN];
1953 int status;
1954
1955 ieee->softmac_stats.rx_auth_rq++;
1956
1957 status = auth_rq_parse(skb, dest);
1958 if (status != -1)
1959 rtllib_resp_to_auth(ieee, status, dest);
1960 }
1961
1962 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1963 struct sk_buff *skb)
1964 {
1965
1966 u8 dest[ETH_ALEN];
1967
1968 ieee->softmac_stats.rx_ass_rq++;
1969 if (assoc_rq_parse(skb, dest) != -1)
1970 rtllib_resp_to_assoc_rq(ieee, dest);
1971
1972 netdev_info(ieee->dev, "New client associated: %pM\n", dest);
1973 }
1974
1975 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1976 {
1977
1978 struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1979
1980 if (buf)
1981 softmac_ps_mgmt_xmit(buf, ieee);
1982 }
1983 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1984
1985 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1986 {
1987 struct sk_buff *buf = rtllib_pspoll_func(ieee);
1988
1989 if (buf)
1990 softmac_ps_mgmt_xmit(buf, ieee);
1991 }
1992
1993 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1994 {
1995 int timeout = ieee->ps_timeout;
1996 u8 dtim;
1997 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1998 (&(ieee->PowerSaveControl));
1999
2000 if (ieee->LPSDelayCnt) {
2001 ieee->LPSDelayCnt--;
2002 return 0;
2003 }
2004
2005 dtim = ieee->current_network.dtim_data;
2006 if (!(dtim & RTLLIB_DTIM_VALID))
2007 return 0;
2008 timeout = ieee->current_network.beacon_interval;
2009 ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
2010 /* there's no need to nofity AP that I find you buffered
2011 * with broadcast packet */
2012 if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
2013 return 2;
2014
2015 if (!time_after(jiffies,
2016 ieee->dev->trans_start + msecs_to_jiffies(timeout)))
2017 return 0;
2018 if (!time_after(jiffies,
2019 ieee->last_rx_ps_time + msecs_to_jiffies(timeout)))
2020 return 0;
2021 if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
2022 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
2023 return 0;
2024
2025 if (time) {
2026 if (ieee->bAwakePktSent) {
2027 pPSC->LPSAwakeIntvl = 1;
2028 } else {
2029 u8 MaxPeriod = 1;
2030
2031 if (pPSC->LPSAwakeIntvl == 0)
2032 pPSC->LPSAwakeIntvl = 1;
2033 if (pPSC->RegMaxLPSAwakeIntvl == 0)
2034 MaxPeriod = 1;
2035 else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2036 MaxPeriod = ieee->current_network.dtim_period;
2037 else
2038 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2039 pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2040 MaxPeriod) ? MaxPeriod :
2041 (pPSC->LPSAwakeIntvl + 1);
2042 }
2043 {
2044 u8 LPSAwakeIntvl_tmp = 0;
2045 u8 period = ieee->current_network.dtim_period;
2046 u8 count = ieee->current_network.tim.tim_count;
2047
2048 if (count == 0) {
2049 if (pPSC->LPSAwakeIntvl > period)
2050 LPSAwakeIntvl_tmp = period +
2051 (pPSC->LPSAwakeIntvl -
2052 period) -
2053 ((pPSC->LPSAwakeIntvl-period) %
2054 period);
2055 else
2056 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2057
2058 } else {
2059 if (pPSC->LPSAwakeIntvl >
2060 ieee->current_network.tim.tim_count)
2061 LPSAwakeIntvl_tmp = count +
2062 (pPSC->LPSAwakeIntvl - count) -
2063 ((pPSC->LPSAwakeIntvl-count)%period);
2064 else
2065 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2066 }
2067
2068 *time = ieee->current_network.last_dtim_sta_time
2069 + msecs_to_jiffies(ieee->current_network.beacon_interval *
2070 LPSAwakeIntvl_tmp);
2071 }
2072 }
2073
2074 return 1;
2075
2076
2077 }
2078
2079 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2080 {
2081 u64 time;
2082 short sleep;
2083 unsigned long flags, flags2;
2084
2085 spin_lock_irqsave(&ieee->lock, flags);
2086
2087 if ((ieee->ps == RTLLIB_PS_DISABLED ||
2088 ieee->iw_mode != IW_MODE_INFRA ||
2089 ieee->state != RTLLIB_LINKED)) {
2090 RT_TRACE(COMP_DBG,
2091 "=====>%s(): no need to ps,wake up!! ieee->ps is %d, ieee->iw_mode is %d, ieee->state is %d\n",
2092 __func__, ieee->ps, ieee->iw_mode, ieee->state);
2093 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2094 rtllib_sta_wakeup(ieee, 1);
2095
2096 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2097 }
2098 sleep = rtllib_sta_ps_sleep(ieee, &time);
2099 /* 2 wake, 1 sleep, 0 do nothing */
2100 if (sleep == 0)
2101 goto out;
2102 if (sleep == 1) {
2103 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2104 ieee->enter_sleep_state(ieee->dev, time);
2105 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2106 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2107
2108 if (ieee->ps_is_queue_empty(ieee->dev)) {
2109 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2110 ieee->ack_tx_to_ieee = 1;
2111 rtllib_sta_ps_send_null_frame(ieee, 1);
2112 ieee->ps_time = time;
2113 }
2114 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2115
2116 }
2117
2118 ieee->bAwakePktSent = false;
2119
2120 } else if (sleep == 2) {
2121 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2122
2123 rtllib_sta_wakeup(ieee, 1);
2124
2125 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2126 }
2127
2128 out:
2129 spin_unlock_irqrestore(&ieee->lock, flags);
2130
2131 }
2132
2133 void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2134 {
2135 if (ieee->sta_sleep == LPS_IS_WAKE) {
2136 if (nl) {
2137 if (ieee->pHTInfo->IOTAction &
2138 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2139 ieee->ack_tx_to_ieee = 1;
2140 rtllib_sta_ps_send_null_frame(ieee, 0);
2141 } else {
2142 ieee->ack_tx_to_ieee = 1;
2143 rtllib_sta_ps_send_pspoll_frame(ieee);
2144 }
2145 }
2146 return;
2147
2148 }
2149
2150 if (ieee->sta_sleep == LPS_IS_SLEEP)
2151 ieee->sta_wake_up(ieee->dev);
2152 if (nl) {
2153 if (ieee->pHTInfo->IOTAction &
2154 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2155 ieee->ack_tx_to_ieee = 1;
2156 rtllib_sta_ps_send_null_frame(ieee, 0);
2157 } else {
2158 ieee->ack_tx_to_ieee = 1;
2159 ieee->polling = true;
2160 rtllib_sta_ps_send_pspoll_frame(ieee);
2161 }
2162
2163 } else {
2164 ieee->sta_sleep = LPS_IS_WAKE;
2165 ieee->polling = false;
2166 }
2167 }
2168
2169 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2170 {
2171 unsigned long flags, flags2;
2172
2173 spin_lock_irqsave(&ieee->lock, flags);
2174
2175 if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2176 /* Null frame with PS bit set */
2177 if (success) {
2178 ieee->sta_sleep = LPS_IS_SLEEP;
2179 ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2180 }
2181 /* if the card report not success we can't be sure the AP
2182 * has not RXed so we can't assume the AP believe us awake
2183 */
2184 } else {/* 21112005 - tx again null without PS bit if lost */
2185
2186 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2187 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2188 if (ieee->pHTInfo->IOTAction &
2189 HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2190 rtllib_sta_ps_send_null_frame(ieee, 0);
2191 else
2192 rtllib_sta_ps_send_pspoll_frame(ieee);
2193 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2194 }
2195 }
2196 spin_unlock_irqrestore(&ieee->lock, flags);
2197 }
2198 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2199
2200 static void rtllib_process_action(struct rtllib_device *ieee, struct sk_buff *skb)
2201 {
2202 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2203 u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2204 u8 category = 0;
2205
2206 if (act == NULL) {
2207 RTLLIB_DEBUG(RTLLIB_DL_ERR,
2208 "error to get payload of action frame\n");
2209 return;
2210 }
2211
2212 category = *act;
2213 act++;
2214 switch (category) {
2215 case ACT_CAT_BA:
2216 switch (*act) {
2217 case ACT_ADDBAREQ:
2218 rtllib_rx_ADDBAReq(ieee, skb);
2219 break;
2220 case ACT_ADDBARSP:
2221 rtllib_rx_ADDBARsp(ieee, skb);
2222 break;
2223 case ACT_DELBA:
2224 rtllib_rx_DELBA(ieee, skb);
2225 break;
2226 }
2227 break;
2228 default:
2229 break;
2230 }
2231 return;
2232 }
2233
2234 inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2235 struct rtllib_rx_stats *rx_stats)
2236 {
2237 u16 errcode;
2238 int aid;
2239 u8 *ies;
2240 struct rtllib_assoc_response_frame *assoc_resp;
2241 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2242
2243 RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
2244 WLAN_FC_GET_STYPE(header->frame_ctl));
2245
2246 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2247 ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2248 (ieee->iw_mode == IW_MODE_INFRA)) {
2249 errcode = assoc_parse(ieee, skb, &aid);
2250 if (0 == errcode) {
2251 struct rtllib_network *network =
2252 kzalloc(sizeof(struct rtllib_network),
2253 GFP_ATOMIC);
2254
2255 if (!network)
2256 return 1;
2257 ieee->state = RTLLIB_LINKED;
2258 ieee->assoc_id = aid;
2259 ieee->softmac_stats.rx_ass_ok++;
2260 /* station support qos */
2261 /* Let the register setting default with Legacy station */
2262 assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2263 if (ieee->current_network.qos_data.supported == 1) {
2264 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2265 rx_stats->len - sizeof(*assoc_resp),
2266 network, rx_stats)) {
2267 kfree(network);
2268 return 1;
2269 }
2270 memcpy(ieee->pHTInfo->PeerHTCapBuf,
2271 network->bssht.bdHTCapBuf,
2272 network->bssht.bdHTCapLen);
2273 memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2274 network->bssht.bdHTInfoBuf,
2275 network->bssht.bdHTInfoLen);
2276 if (ieee->handle_assoc_response != NULL)
2277 ieee->handle_assoc_response(ieee->dev,
2278 (struct rtllib_assoc_response_frame *)header,
2279 network);
2280 }
2281 kfree(network);
2282
2283 kfree(ieee->assocresp_ies);
2284 ieee->assocresp_ies = NULL;
2285 ies = &(assoc_resp->info_element[0].id);
2286 ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2287 ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2288 GFP_ATOMIC);
2289 if (ieee->assocresp_ies)
2290 memcpy(ieee->assocresp_ies, ies,
2291 ieee->assocresp_ies_len);
2292 else {
2293 netdev_info(ieee->dev,
2294 "%s()Warning: can't alloc memory for assocresp_ies\n",
2295 __func__);
2296 ieee->assocresp_ies_len = 0;
2297 }
2298 rtllib_associate_complete(ieee);
2299 } else {
2300 /* aid could not been allocated */
2301 ieee->softmac_stats.rx_ass_err++;
2302 netdev_info(ieee->dev,
2303 "Association response status code 0x%x\n",
2304 errcode);
2305 RTLLIB_DEBUG_MGMT(
2306 "Association response status code 0x%x\n",
2307 errcode);
2308 if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2309 queue_delayed_work_rsl(ieee->wq,
2310 &ieee->associate_procedure_wq, 0);
2311 else
2312 rtllib_associate_abort(ieee);
2313 }
2314 }
2315 return 0;
2316 }
2317
2318 inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2319 struct rtllib_rx_stats *rx_stats)
2320 {
2321 u16 errcode;
2322 u8 *challenge;
2323 int chlen = 0;
2324 bool bSupportNmode = true, bHalfSupportNmode = false;
2325
2326 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2327 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2328 (ieee->iw_mode == IW_MODE_INFRA)) {
2329 RTLLIB_DEBUG_MGMT("Received authentication response");
2330
2331 errcode = auth_parse(skb, &challenge, &chlen);
2332 if (0 == errcode) {
2333 if (ieee->open_wep || !challenge) {
2334 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2335 ieee->softmac_stats.rx_auth_rs_ok++;
2336 if (!(ieee->pHTInfo->IOTAction &
2337 HT_IOT_ACT_PURE_N_MODE)) {
2338 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2339 if (IsHTHalfNmodeAPs(ieee)) {
2340 bSupportNmode = true;
2341 bHalfSupportNmode = true;
2342 } else {
2343 bSupportNmode = false;
2344 bHalfSupportNmode = false;
2345 }
2346 }
2347 }
2348 /* Dummy wirless mode setting to avoid
2349 * encryption issue */
2350 if (bSupportNmode) {
2351 ieee->SetWirelessMode(ieee->dev,
2352 ieee->current_network.mode);
2353 } else {
2354 /*TODO*/
2355 ieee->SetWirelessMode(ieee->dev,
2356 IEEE_G);
2357 }
2358
2359 if (ieee->current_network.mode ==
2360 IEEE_N_24G && bHalfSupportNmode) {
2361 netdev_info(ieee->dev,
2362 "======>enter half N mode\n");
2363 ieee->bHalfWirelessN24GMode =
2364 true;
2365 } else
2366 ieee->bHalfWirelessN24GMode =
2367 false;
2368
2369 rtllib_associate_step2(ieee);
2370 } else {
2371 rtllib_auth_challenge(ieee, challenge,
2372 chlen);
2373 }
2374 } else {
2375 ieee->softmac_stats.rx_auth_rs_err++;
2376 RTLLIB_DEBUG_MGMT("Authentication respose status code 0x%x",
2377 errcode);
2378
2379 netdev_info(ieee->dev,
2380 "Authentication respose status code 0x%x",
2381 errcode);
2382 rtllib_associate_abort(ieee);
2383 }
2384
2385 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2386 rtllib_rx_auth_rq(ieee, skb);
2387 }
2388 }
2389 return 0;
2390 }
2391
2392 inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2393 {
2394 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2395
2396 if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2397 return 0;
2398
2399 /* FIXME for now repeat all the association procedure
2400 * both for disassociation and deauthentication
2401 */
2402 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2403 ieee->state == RTLLIB_LINKED &&
2404 (ieee->iw_mode == IW_MODE_INFRA)) {
2405 netdev_info(ieee->dev,
2406 "==========>received disassoc/deauth(%x) frame, reason code:%x\n",
2407 WLAN_FC_GET_STYPE(header->frame_ctl),
2408 ((struct rtllib_disassoc *)skb->data)->reason);
2409 ieee->state = RTLLIB_ASSOCIATING;
2410 ieee->softmac_stats.reassoc++;
2411 ieee->is_roaming = true;
2412 ieee->LinkDetectInfo.bBusyTraffic = false;
2413 rtllib_disassociate(ieee);
2414 RemovePeerTS(ieee, header->addr2);
2415 if (ieee->LedControlHandler != NULL)
2416 ieee->LedControlHandler(ieee->dev,
2417 LED_CTL_START_TO_LINK);
2418
2419 if (!(ieee->rtllib_ap_sec_type(ieee) &
2420 (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2421 queue_delayed_work_rsl(ieee->wq,
2422 &ieee->associate_procedure_wq, 5);
2423 }
2424 return 0;
2425 }
2426
2427 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2428 struct sk_buff *skb,
2429 struct rtllib_rx_stats *rx_stats, u16 type,
2430 u16 stype)
2431 {
2432 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2433
2434 if (!ieee->proto_started)
2435 return 0;
2436
2437 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2438 case RTLLIB_STYPE_ASSOC_RESP:
2439 case RTLLIB_STYPE_REASSOC_RESP:
2440 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2441 return 1;
2442 break;
2443 case RTLLIB_STYPE_ASSOC_REQ:
2444 case RTLLIB_STYPE_REASSOC_REQ:
2445 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2446 ieee->iw_mode == IW_MODE_MASTER)
2447 rtllib_rx_assoc_rq(ieee, skb);
2448 break;
2449 case RTLLIB_STYPE_AUTH:
2450 rtllib_rx_auth(ieee, skb, rx_stats);
2451 break;
2452 case RTLLIB_STYPE_DISASSOC:
2453 case RTLLIB_STYPE_DEAUTH:
2454 rtllib_rx_deauth(ieee, skb);
2455 break;
2456 case RTLLIB_STYPE_MANAGE_ACT:
2457 rtllib_process_action(ieee, skb);
2458 break;
2459 default:
2460 return -1;
2461 }
2462 return 0;
2463 }
2464
2465 /* following are for a simpler TX queue management.
2466 * Instead of using netif_[stop/wake]_queue the driver
2467 * will use these two functions (plus a reset one), that
2468 * will internally use the kernel netif_* and takes
2469 * care of the ieee802.11 fragmentation.
2470 * So the driver receives a fragment per time and might
2471 * call the stop function when it wants to not
2472 * have enough room to TX an entire packet.
2473 * This might be useful if each fragment needs it's own
2474 * descriptor, thus just keep a total free memory > than
2475 * the max fragmentation threshold is not enough.. If the
2476 * ieee802.11 stack passed a TXB struct then you need
2477 * to keep N free descriptors where
2478 * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2479 * In this way you need just one and the 802.11 stack
2480 * will take care of buffering fragments and pass them to
2481 * to the driver later, when it wakes the queue.
2482 */
2483 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2484 {
2485
2486 unsigned int queue_index = txb->queue_index;
2487 unsigned long flags;
2488 int i;
2489 struct cb_desc *tcb_desc = NULL;
2490 unsigned long queue_len = 0;
2491
2492 spin_lock_irqsave(&ieee->lock, flags);
2493
2494 /* called with 2nd parm 0, no tx mgmt lock required */
2495 rtllib_sta_wakeup(ieee, 0);
2496
2497 /* update the tx status */
2498 tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2499 MAX_DEV_ADDR_SIZE);
2500 if (tcb_desc->bMulticast)
2501 ieee->stats.multicast++;
2502
2503 /* if xmit available, just xmit it immediately, else just insert it to
2504 * the wait queue */
2505 for (i = 0; i < txb->nr_frags; i++) {
2506 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2507 if ((queue_len != 0) ||\
2508 (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2509 (ieee->queue_stop)) {
2510 /* insert the skb packet to the wait queue */
2511 /* as for the completion function, it does not need
2512 * to check it any more.
2513 * */
2514 if (queue_len < 200)
2515 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2516 txb->fragments[i]);
2517 else
2518 kfree_skb(txb->fragments[i]);
2519 } else {
2520 ieee->softmac_data_hard_start_xmit(
2521 txb->fragments[i],
2522 ieee->dev, ieee->rate);
2523 }
2524 }
2525
2526 rtllib_txb_free(txb);
2527
2528 spin_unlock_irqrestore(&ieee->lock, flags);
2529
2530 }
2531
2532 /* called with ieee->lock acquired */
2533 static void rtllib_resume_tx(struct rtllib_device *ieee)
2534 {
2535 int i;
2536
2537 for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags;
2538 i++) {
2539
2540 if (ieee->queue_stop) {
2541 ieee->tx_pending.frag = i;
2542 return;
2543 } else {
2544
2545 ieee->softmac_data_hard_start_xmit(
2546 ieee->tx_pending.txb->fragments[i],
2547 ieee->dev, ieee->rate);
2548 ieee->stats.tx_packets++;
2549 }
2550 }
2551
2552 rtllib_txb_free(ieee->tx_pending.txb);
2553 ieee->tx_pending.txb = NULL;
2554 }
2555
2556
2557 void rtllib_reset_queue(struct rtllib_device *ieee)
2558 {
2559 unsigned long flags;
2560
2561 spin_lock_irqsave(&ieee->lock, flags);
2562 init_mgmt_queue(ieee);
2563 if (ieee->tx_pending.txb) {
2564 rtllib_txb_free(ieee->tx_pending.txb);
2565 ieee->tx_pending.txb = NULL;
2566 }
2567 ieee->queue_stop = 0;
2568 spin_unlock_irqrestore(&ieee->lock, flags);
2569
2570 }
2571 EXPORT_SYMBOL(rtllib_reset_queue);
2572
2573 void rtllib_wake_queue(struct rtllib_device *ieee)
2574 {
2575
2576 unsigned long flags;
2577 struct sk_buff *skb;
2578 struct rtllib_hdr_3addr *header;
2579
2580 spin_lock_irqsave(&ieee->lock, flags);
2581 if (!ieee->queue_stop)
2582 goto exit;
2583
2584 ieee->queue_stop = 0;
2585
2586 if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) {
2587 while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) {
2588
2589 header = (struct rtllib_hdr_3addr *) skb->data;
2590
2591 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2592
2593 if (ieee->seq_ctrl[0] == 0xFFF)
2594 ieee->seq_ctrl[0] = 0;
2595 else
2596 ieee->seq_ctrl[0]++;
2597
2598 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
2599 ieee->basic_rate);
2600 }
2601 }
2602 if (!ieee->queue_stop && ieee->tx_pending.txb)
2603 rtllib_resume_tx(ieee);
2604
2605 if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) {
2606 ieee->softmac_stats.swtxawake++;
2607 netif_wake_queue(ieee->dev);
2608 }
2609
2610 exit:
2611 spin_unlock_irqrestore(&ieee->lock, flags);
2612 }
2613
2614
2615 void rtllib_stop_queue(struct rtllib_device *ieee)
2616 {
2617
2618 if (!netif_queue_stopped(ieee->dev)) {
2619 netif_stop_queue(ieee->dev);
2620 ieee->softmac_stats.swtxstop++;
2621 }
2622 ieee->queue_stop = 1;
2623
2624 }
2625
2626 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2627 {
2628 unsigned int i;
2629
2630 for (i = 0; i < ieee->dev->num_tx_queues; i++)
2631 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2632
2633 netif_tx_stop_all_queues(ieee->dev);
2634 }
2635
2636 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2637 {
2638 netif_tx_wake_all_queues(ieee->dev);
2639 }
2640
2641 inline void rtllib_randomize_cell(struct rtllib_device *ieee)
2642 {
2643
2644 random_ether_addr(ieee->current_network.bssid);
2645 }
2646
2647 /* called in user context only */
2648 void rtllib_start_master_bss(struct rtllib_device *ieee)
2649 {
2650 ieee->assoc_id = 1;
2651
2652 if (ieee->current_network.ssid_len == 0) {
2653 strncpy(ieee->current_network.ssid,
2654 RTLLIB_DEFAULT_TX_ESSID,
2655 IW_ESSID_MAX_SIZE);
2656
2657 ieee->current_network.ssid_len =
2658 strlen(RTLLIB_DEFAULT_TX_ESSID);
2659 ieee->ssid_set = 1;
2660 }
2661
2662 memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN);
2663
2664 ieee->set_chan(ieee->dev, ieee->current_network.channel);
2665 ieee->state = RTLLIB_LINKED;
2666 ieee->link_change(ieee->dev);
2667 notify_wx_assoc_event(ieee);
2668
2669 if (ieee->data_hard_resume)
2670 ieee->data_hard_resume(ieee->dev);
2671
2672 netif_carrier_on(ieee->dev);
2673 }
2674
2675 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2676 {
2677 /* reset hardware status */
2678 if (ieee->raw_tx) {
2679 if (ieee->data_hard_resume)
2680 ieee->data_hard_resume(ieee->dev);
2681
2682 netif_carrier_on(ieee->dev);
2683 }
2684 }
2685
2686 static void rtllib_start_ibss_wq(void *data)
2687 {
2688 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2689 struct rtllib_device, start_ibss_wq);
2690 /* iwconfig mode ad-hoc will schedule this and return
2691 * on the other hand this will block further iwconfig SET
2692 * operations because of the wx_sem hold.
2693 * Anyway some most set operations set a flag to speed-up
2694 * (abort) this wq (when syncro scanning) before sleeping
2695 * on the semaphore
2696 */
2697 if (!ieee->proto_started) {
2698 netdev_info(ieee->dev, "==========oh driver down return\n");
2699 return;
2700 }
2701 down(&ieee->wx_sem);
2702
2703 if (ieee->current_network.ssid_len == 0) {
2704 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2705 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2706 ieee->ssid_set = 1;
2707 }
2708
2709 ieee->state = RTLLIB_NOLINK;
2710 ieee->mode = IEEE_G;
2711 /* check if we have this cell in our network list */
2712 rtllib_softmac_check_all_nets(ieee);
2713
2714
2715 /* if not then the state is not linked. Maybe the user switched to
2716 * ad-hoc mode just after being in monitor mode, or just after
2717 * being very few time in managed mode (so the card have had no
2718 * time to scan all the chans..) or we have just run up the iface
2719 * after setting ad-hoc mode. So we have to give another try..
2720 * Here, in ibss mode, should be safe to do this without extra care
2721 * (in bss mode we had to make sure no-one tried to associate when
2722 * we had just checked the ieee->state and we was going to start the
2723 * scan) because in ibss mode the rtllib_new_net function, when
2724 * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2725 * so, at worst, we waste a bit of time to initiate an unneeded syncro
2726 * scan, that will stop at the first round because it sees the state
2727 * associated.
2728 */
2729 if (ieee->state == RTLLIB_NOLINK)
2730 rtllib_start_scan_syncro(ieee, 0);
2731
2732 /* the network definitively is not here.. create a new cell */
2733 if (ieee->state == RTLLIB_NOLINK) {
2734 netdev_info(ieee->dev, "creating new IBSS cell\n");
2735 ieee->current_network.channel = ieee->IbssStartChnl;
2736 if (!ieee->wap_set)
2737 rtllib_randomize_cell(ieee);
2738
2739 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2740
2741 ieee->current_network.rates_len = 4;
2742
2743 ieee->current_network.rates[0] =
2744 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2745 ieee->current_network.rates[1] =
2746 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2747 ieee->current_network.rates[2] =
2748 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2749 ieee->current_network.rates[3] =
2750 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2751
2752 } else
2753 ieee->current_network.rates_len = 0;
2754
2755 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2756 ieee->current_network.rates_ex_len = 8;
2757
2758 ieee->current_network.rates_ex[0] =
2759 RTLLIB_OFDM_RATE_6MB;
2760 ieee->current_network.rates_ex[1] =
2761 RTLLIB_OFDM_RATE_9MB;
2762 ieee->current_network.rates_ex[2] =
2763 RTLLIB_OFDM_RATE_12MB;
2764 ieee->current_network.rates_ex[3] =
2765 RTLLIB_OFDM_RATE_18MB;
2766 ieee->current_network.rates_ex[4] =
2767 RTLLIB_OFDM_RATE_24MB;
2768 ieee->current_network.rates_ex[5] =
2769 RTLLIB_OFDM_RATE_36MB;
2770 ieee->current_network.rates_ex[6] =
2771 RTLLIB_OFDM_RATE_48MB;
2772 ieee->current_network.rates_ex[7] =
2773 RTLLIB_OFDM_RATE_54MB;
2774
2775 ieee->rate = 108;
2776 } else {
2777 ieee->current_network.rates_ex_len = 0;
2778 ieee->rate = 22;
2779 }
2780
2781 ieee->current_network.qos_data.supported = 0;
2782 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2783 ieee->current_network.mode = ieee->mode;
2784 ieee->current_network.atim_window = 0;
2785 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2786 }
2787
2788 netdev_info(ieee->dev, "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2789 if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2790 HTUseDefaultSetting(ieee);
2791 else
2792 ieee->pHTInfo->bCurrentHTSupport = false;
2793
2794 ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2795 (u8 *)(&ieee->state));
2796
2797 ieee->state = RTLLIB_LINKED;
2798 ieee->link_change(ieee->dev);
2799
2800 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2801 if (ieee->LedControlHandler != NULL)
2802 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2803
2804 rtllib_start_send_beacons(ieee);
2805
2806 notify_wx_assoc_event(ieee);
2807
2808 if (ieee->data_hard_resume)
2809 ieee->data_hard_resume(ieee->dev);
2810
2811 netif_carrier_on(ieee->dev);
2812
2813 up(&ieee->wx_sem);
2814 }
2815
2816 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2817 {
2818 queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq,
2819 msecs_to_jiffies(150));
2820 }
2821
2822 /* this is called only in user context, with wx_sem held */
2823 void rtllib_start_bss(struct rtllib_device *ieee)
2824 {
2825 unsigned long flags;
2826
2827 if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2828 if (!ieee->bGlobalDomain)
2829 return;
2830 }
2831 /* check if we have already found the net we
2832 * are interested in (if any).
2833 * if not (we are disassociated and we are not
2834 * in associating / authenticating phase) start the background scanning.
2835 */
2836 rtllib_softmac_check_all_nets(ieee);
2837
2838 /* ensure no-one start an associating process (thus setting
2839 * the ieee->state to rtllib_ASSOCIATING) while we
2840 * have just checked it and we are going to enable scan.
2841 * The rtllib_new_net function is always called with
2842 * lock held (from both rtllib_softmac_check_all_nets and
2843 * the rx path), so we cannot be in the middle of such function
2844 */
2845 spin_lock_irqsave(&ieee->lock, flags);
2846
2847 if (ieee->state == RTLLIB_NOLINK)
2848 rtllib_start_scan(ieee);
2849 spin_unlock_irqrestore(&ieee->lock, flags);
2850 }
2851
2852 static void rtllib_link_change_wq(void *data)
2853 {
2854 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2855 struct rtllib_device, link_change_wq);
2856 ieee->link_change(ieee->dev);
2857 }
2858 /* called only in userspace context */
2859 void rtllib_disassociate(struct rtllib_device *ieee)
2860 {
2861 netif_carrier_off(ieee->dev);
2862 if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2863 rtllib_reset_queue(ieee);
2864
2865 if (ieee->data_hard_stop)
2866 ieee->data_hard_stop(ieee->dev);
2867 if (IS_DOT11D_ENABLE(ieee))
2868 Dot11d_Reset(ieee);
2869 ieee->state = RTLLIB_NOLINK;
2870 ieee->is_set_key = false;
2871 ieee->wap_set = 0;
2872
2873 queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0);
2874
2875 notify_wx_assoc_event(ieee);
2876 }
2877
2878 static void rtllib_associate_retry_wq(void *data)
2879 {
2880 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2881 struct rtllib_device, associate_retry_wq);
2882 unsigned long flags;
2883
2884 down(&ieee->wx_sem);
2885 if (!ieee->proto_started)
2886 goto exit;
2887
2888 if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2889 goto exit;
2890
2891 /* until we do not set the state to RTLLIB_NOLINK
2892 * there are no possibility to have someone else trying
2893 * to start an association procedure (we get here with
2894 * ieee->state = RTLLIB_ASSOCIATING).
2895 * When we set the state to RTLLIB_NOLINK it is possible
2896 * that the RX path run an attempt to associate, but
2897 * both rtllib_softmac_check_all_nets and the
2898 * RX path works with ieee->lock held so there are no
2899 * problems. If we are still disassociated then start a scan.
2900 * the lock here is necessary to ensure no one try to start
2901 * an association procedure when we have just checked the
2902 * state and we are going to start the scan.
2903 */
2904 ieee->beinretry = true;
2905 ieee->state = RTLLIB_NOLINK;
2906
2907 rtllib_softmac_check_all_nets(ieee);
2908
2909 spin_lock_irqsave(&ieee->lock, flags);
2910
2911 if (ieee->state == RTLLIB_NOLINK)
2912 rtllib_start_scan(ieee);
2913 spin_unlock_irqrestore(&ieee->lock, flags);
2914
2915 ieee->beinretry = false;
2916 exit:
2917 up(&ieee->wx_sem);
2918 }
2919
2920 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2921 {
2922 u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2923
2924 struct sk_buff *skb;
2925 struct rtllib_probe_response *b;
2926
2927 skb = rtllib_probe_resp(ieee, broadcast_addr);
2928
2929 if (!skb)
2930 return NULL;
2931
2932 b = (struct rtllib_probe_response *) skb->data;
2933 b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2934
2935 return skb;
2936
2937 }
2938
2939 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2940 {
2941 struct sk_buff *skb;
2942 struct rtllib_probe_response *b;
2943
2944 skb = rtllib_get_beacon_(ieee);
2945 if (!skb)
2946 return NULL;
2947
2948 b = (struct rtllib_probe_response *) skb->data;
2949 b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2950
2951 if (ieee->seq_ctrl[0] == 0xFFF)
2952 ieee->seq_ctrl[0] = 0;
2953 else
2954 ieee->seq_ctrl[0]++;
2955
2956 return skb;
2957 }
2958 EXPORT_SYMBOL(rtllib_get_beacon);
2959
2960 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2961 u8 shutdown)
2962 {
2963 rtllib_stop_scan_syncro(ieee);
2964 down(&ieee->wx_sem);
2965 rtllib_stop_protocol(ieee, shutdown);
2966 up(&ieee->wx_sem);
2967 }
2968 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2969
2970
2971 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2972 {
2973 if (!ieee->proto_started)
2974 return;
2975
2976 if (shutdown) {
2977 ieee->proto_started = 0;
2978 ieee->proto_stoppping = 1;
2979 if (ieee->rtllib_ips_leave != NULL)
2980 ieee->rtllib_ips_leave(ieee->dev);
2981 }
2982
2983 rtllib_stop_send_beacons(ieee);
2984 del_timer_sync(&ieee->associate_timer);
2985 cancel_delayed_work(&ieee->associate_retry_wq);
2986 cancel_delayed_work(&ieee->start_ibss_wq);
2987 cancel_delayed_work(&ieee->link_change_wq);
2988 rtllib_stop_scan(ieee);
2989
2990 if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2991 ieee->state = RTLLIB_NOLINK;
2992
2993 if (ieee->state == RTLLIB_LINKED) {
2994 if (ieee->iw_mode == IW_MODE_INFRA)
2995 SendDisassociation(ieee, 1, deauth_lv_ss);
2996 rtllib_disassociate(ieee);
2997 }
2998
2999 if (shutdown) {
3000 RemoveAllTS(ieee);
3001 ieee->proto_stoppping = 0;
3002 }
3003 kfree(ieee->assocreq_ies);
3004 ieee->assocreq_ies = NULL;
3005 ieee->assocreq_ies_len = 0;
3006 kfree(ieee->assocresp_ies);
3007 ieee->assocresp_ies = NULL;
3008 ieee->assocresp_ies_len = 0;
3009 }
3010
3011 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
3012 {
3013 down(&ieee->wx_sem);
3014 rtllib_start_protocol(ieee);
3015 up(&ieee->wx_sem);
3016 }
3017 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
3018
3019 void rtllib_start_protocol(struct rtllib_device *ieee)
3020 {
3021 short ch = 0;
3022 int i = 0;
3023
3024 rtllib_update_active_chan_map(ieee);
3025
3026 if (ieee->proto_started)
3027 return;
3028
3029 ieee->proto_started = 1;
3030
3031 if (ieee->current_network.channel == 0) {
3032 do {
3033 ch++;
3034 if (ch > MAX_CHANNEL_NUMBER)
3035 return; /* no channel found */
3036 } while (!ieee->active_channel_map[ch]);
3037 ieee->current_network.channel = ch;
3038 }
3039
3040 if (ieee->current_network.beacon_interval == 0)
3041 ieee->current_network.beacon_interval = 100;
3042
3043 for (i = 0; i < 17; i++) {
3044 ieee->last_rxseq_num[i] = -1;
3045 ieee->last_rxfrag_num[i] = -1;
3046 ieee->last_packet_time[i] = 0;
3047 }
3048
3049 if (ieee->UpdateBeaconInterruptHandler)
3050 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
3051
3052 ieee->wmm_acm = 0;
3053 /* if the user set the MAC of the ad-hoc cell and then
3054 * switch to managed mode, shall we make sure that association
3055 * attempts does not fail just because the user provide the essid
3056 * and the nic is still checking for the AP MAC ??
3057 */
3058 if (ieee->iw_mode == IW_MODE_INFRA) {
3059 rtllib_start_bss(ieee);
3060 } else if (ieee->iw_mode == IW_MODE_ADHOC) {
3061 if (ieee->UpdateBeaconInterruptHandler)
3062 ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
3063
3064 rtllib_start_ibss(ieee);
3065
3066 } else if (ieee->iw_mode == IW_MODE_MASTER) {
3067 rtllib_start_master_bss(ieee);
3068 } else if (ieee->iw_mode == IW_MODE_MONITOR) {
3069 rtllib_start_monitor_mode(ieee);
3070 }
3071 }
3072
3073 void rtllib_softmac_init(struct rtllib_device *ieee)
3074 {
3075 int i;
3076
3077 memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
3078
3079 ieee->state = RTLLIB_NOLINK;
3080 for (i = 0; i < 5; i++)
3081 ieee->seq_ctrl[i] = 0;
3082 ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
3083 if (!ieee->pDot11dInfo)
3084 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for DOT11D\n");
3085 ieee->LinkDetectInfo.SlotIndex = 0;
3086 ieee->LinkDetectInfo.SlotNum = 2;
3087 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
3088 ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
3089 ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
3090 ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
3091 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
3092 ieee->bIsAggregateFrame = false;
3093 ieee->assoc_id = 0;
3094 ieee->queue_stop = 0;
3095 ieee->scanning_continue = 0;
3096 ieee->softmac_features = 0;
3097 ieee->wap_set = 0;
3098 ieee->ssid_set = 0;
3099 ieee->proto_started = 0;
3100 ieee->proto_stoppping = 0;
3101 ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
3102 ieee->rate = 22;
3103 ieee->ps = RTLLIB_PS_DISABLED;
3104 ieee->sta_sleep = LPS_IS_WAKE;
3105
3106 ieee->Regdot11HTOperationalRateSet[0] = 0xff;
3107 ieee->Regdot11HTOperationalRateSet[1] = 0xff;
3108 ieee->Regdot11HTOperationalRateSet[4] = 0x01;
3109
3110 ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3111 ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3112 ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3113
3114 ieee->FirstIe_InScan = false;
3115 ieee->actscanning = false;
3116 ieee->beinretry = false;
3117 ieee->is_set_key = false;
3118 init_mgmt_queue(ieee);
3119
3120 ieee->sta_edca_param[0] = 0x0000A403;
3121 ieee->sta_edca_param[1] = 0x0000A427;
3122 ieee->sta_edca_param[2] = 0x005E4342;
3123 ieee->sta_edca_param[3] = 0x002F3262;
3124 ieee->aggregation = true;
3125 ieee->enable_rx_imm_BA = true;
3126 ieee->tx_pending.txb = NULL;
3127
3128 _setup_timer(&ieee->associate_timer,
3129 rtllib_associate_abort_cb,
3130 (unsigned long) ieee);
3131
3132 _setup_timer(&ieee->beacon_timer,
3133 rtllib_send_beacon_cb,
3134 (unsigned long) ieee);
3135
3136
3137 ieee->wq = create_workqueue(DRV_NAME);
3138
3139 INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3140 (void *)rtllib_link_change_wq, ieee);
3141 INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3142 (void *)rtllib_start_ibss_wq, ieee);
3143 INIT_WORK_RSL(&ieee->associate_complete_wq,
3144 (void *)rtllib_associate_complete_wq, ieee);
3145 INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3146 (void *)rtllib_associate_procedure_wq, ieee);
3147 INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3148 (void *)rtllib_softmac_scan_wq, ieee);
3149 INIT_DELAYED_WORK_RSL(&ieee->softmac_hint11d_wq,
3150 (void *)rtllib_softmac_hint11d_wq, ieee);
3151 INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3152 (void *)rtllib_associate_retry_wq, ieee);
3153 INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3154 ieee);
3155
3156 sema_init(&ieee->wx_sem, 1);
3157 sema_init(&ieee->scan_sem, 1);
3158 sema_init(&ieee->ips_sem, 1);
3159
3160 spin_lock_init(&ieee->mgmt_tx_lock);
3161 spin_lock_init(&ieee->beacon_lock);
3162
3163 tasklet_init(&ieee->ps_task,
3164 (void(*)(unsigned long)) rtllib_sta_ps,
3165 (unsigned long)ieee);
3166
3167 }
3168
3169 void rtllib_softmac_free(struct rtllib_device *ieee)
3170 {
3171 down(&ieee->wx_sem);
3172 kfree(ieee->pDot11dInfo);
3173 ieee->pDot11dInfo = NULL;
3174 del_timer_sync(&ieee->associate_timer);
3175
3176 cancel_delayed_work(&ieee->associate_retry_wq);
3177 destroy_workqueue(ieee->wq);
3178 up(&ieee->wx_sem);
3179 tasklet_kill(&ieee->ps_task);
3180 }
3181
3182 /********************************************************
3183 * Start of WPA code. *
3184 * this is stolen from the ipw2200 driver *
3185 ********************************************************/
3186
3187
3188 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3189 {
3190 /* This is called when wpa_supplicant loads and closes the driver
3191 * interface. */
3192 netdev_info(ieee->dev, "%s WPA\n", value ? "enabling" : "disabling");
3193 ieee->wpa_enabled = value;
3194 memset(ieee->ap_mac_addr, 0, 6);
3195 return 0;
3196 }
3197
3198
3199 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3200 int wpa_ie_len)
3201 {
3202 /* make sure WPA is enabled */
3203 rtllib_wpa_enable(ieee, 1);
3204
3205 rtllib_disassociate(ieee);
3206 }
3207
3208
3209 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3210 {
3211
3212 int ret = 0;
3213
3214 switch (command) {
3215 case IEEE_MLME_STA_DEAUTH:
3216 break;
3217
3218 case IEEE_MLME_STA_DISASSOC:
3219 rtllib_disassociate(ieee);
3220 break;
3221
3222 default:
3223 netdev_info(ieee->dev, "Unknown MLME request: %d\n", command);
3224 ret = -EOPNOTSUPP;
3225 }
3226
3227 return ret;
3228 }
3229
3230
3231 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3232 struct ieee_param *param, int plen)
3233 {
3234 u8 *buf;
3235
3236 if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3237 (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3238 return -EINVAL;
3239
3240 if (param->u.wpa_ie.len) {
3241 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
3242 GFP_KERNEL);
3243 if (buf == NULL)
3244 return -ENOMEM;
3245
3246 kfree(ieee->wpa_ie);
3247 ieee->wpa_ie = buf;
3248 ieee->wpa_ie_len = param->u.wpa_ie.len;
3249 } else {
3250 kfree(ieee->wpa_ie);
3251 ieee->wpa_ie = NULL;
3252 ieee->wpa_ie_len = 0;
3253 }
3254
3255 rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3256 return 0;
3257 }
3258
3259 #define AUTH_ALG_OPEN_SYSTEM 0x1
3260 #define AUTH_ALG_SHARED_KEY 0x2
3261 #define AUTH_ALG_LEAP 0x4
3262 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3263 {
3264
3265 struct rtllib_security sec = {
3266 .flags = SEC_AUTH_MODE,
3267 };
3268
3269 if (value & AUTH_ALG_SHARED_KEY) {
3270 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3271 ieee->open_wep = 0;
3272 ieee->auth_mode = 1;
3273 } else if (value & AUTH_ALG_OPEN_SYSTEM) {
3274 sec.auth_mode = WLAN_AUTH_OPEN;
3275 ieee->open_wep = 1;
3276 ieee->auth_mode = 0;
3277 } else if (value & AUTH_ALG_LEAP) {
3278 sec.auth_mode = WLAN_AUTH_LEAP >> 6;
3279 ieee->open_wep = 1;
3280 ieee->auth_mode = 2;
3281 }
3282
3283
3284 if (ieee->set_security)
3285 ieee->set_security(ieee->dev, &sec);
3286
3287 return 0;
3288 }
3289
3290 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3291 {
3292 int ret = 0;
3293 unsigned long flags;
3294
3295 switch (name) {
3296 case IEEE_PARAM_WPA_ENABLED:
3297 ret = rtllib_wpa_enable(ieee, value);
3298 break;
3299
3300 case IEEE_PARAM_TKIP_COUNTERMEASURES:
3301 ieee->tkip_countermeasures = value;
3302 break;
3303
3304 case IEEE_PARAM_DROP_UNENCRYPTED:
3305 {
3306 /* HACK:
3307 *
3308 * wpa_supplicant calls set_wpa_enabled when the driver
3309 * is loaded and unloaded, regardless of if WPA is being
3310 * used. No other calls are made which can be used to
3311 * determine if encryption will be used or not prior to
3312 * association being expected. If encryption is not being
3313 * used, drop_unencrypted is set to false, else true -- we
3314 * can use this to determine if the CAP_PRIVACY_ON bit should
3315 * be set.
3316 */
3317 struct rtllib_security sec = {
3318 .flags = SEC_ENABLED,
3319 .enabled = value,
3320 };
3321 ieee->drop_unencrypted = value;
3322 /* We only change SEC_LEVEL for open mode. Others
3323 * are set by ipw_wpa_set_encryption.
3324 */
3325 if (!value) {
3326 sec.flags |= SEC_LEVEL;
3327 sec.level = SEC_LEVEL_0;
3328 } else {
3329 sec.flags |= SEC_LEVEL;
3330 sec.level = SEC_LEVEL_1;
3331 }
3332 if (ieee->set_security)
3333 ieee->set_security(ieee->dev, &sec);
3334 break;
3335 }
3336
3337 case IEEE_PARAM_PRIVACY_INVOKED:
3338 ieee->privacy_invoked = value;
3339 break;
3340
3341 case IEEE_PARAM_AUTH_ALGS:
3342 ret = rtllib_wpa_set_auth_algs(ieee, value);
3343 break;
3344
3345 case IEEE_PARAM_IEEE_802_1X:
3346 ieee->ieee802_1x = value;
3347 break;
3348 case IEEE_PARAM_WPAX_SELECT:
3349 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3350 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3351 break;
3352
3353 default:
3354 netdev_info(ieee->dev, "Unknown WPA param: %d\n", name);
3355 ret = -EOPNOTSUPP;
3356 }
3357
3358 return ret;
3359 }
3360
3361 /* implementation borrowed from hostap driver */
3362 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3363 struct ieee_param *param, int param_len,
3364 u8 is_mesh)
3365 {
3366 int ret = 0;
3367 struct lib80211_crypto_ops *ops;
3368 struct lib80211_crypt_data **crypt;
3369
3370 struct rtllib_security sec = {
3371 .flags = 0,
3372 };
3373
3374 param->u.crypt.err = 0;
3375 param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3376
3377 if (param_len !=
3378 (int) ((char *) param->u.crypt.key - (char *) param) +
3379 param->u.crypt.key_len) {
3380 netdev_info(ieee->dev, "Len mismatch %d, %d\n", param_len,
3381 param->u.crypt.key_len);
3382 return -EINVAL;
3383 }
3384 if (is_broadcast_ether_addr(param->sta_addr)) {
3385 if (param->u.crypt.idx >= NUM_WEP_KEYS)
3386 return -EINVAL;
3387 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
3388 } else {
3389 return -EINVAL;
3390 }
3391
3392 if (strcmp(param->u.crypt.alg, "none") == 0) {
3393 if (crypt) {
3394 sec.enabled = 0;
3395 sec.level = SEC_LEVEL_0;
3396 sec.flags |= SEC_ENABLED | SEC_LEVEL;
3397 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3398 }
3399 goto done;
3400 }
3401 sec.enabled = 1;
3402 sec.flags |= SEC_ENABLED;
3403
3404 /* IPW HW cannot build TKIP MIC, host decryption still needed. */
3405 if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3406 strcmp(param->u.crypt.alg, "R-TKIP"))
3407 goto skip_host_crypt;
3408
3409 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3410 if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3411 request_module("rtllib_crypt_wep");
3412 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3413 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3414 request_module("rtllib_crypt_tkip");
3415 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3416 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3417 request_module("rtllib_crypt_ccmp");
3418 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3419 }
3420 if (ops == NULL) {
3421 netdev_info(ieee->dev, "unknown crypto alg '%s'\n",
3422 param->u.crypt.alg);
3423 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3424 ret = -EINVAL;
3425 goto done;
3426 }
3427 if (*crypt == NULL || (*crypt)->ops != ops) {
3428 struct lib80211_crypt_data *new_crypt;
3429
3430 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3431
3432 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
3433 if (new_crypt == NULL) {
3434 ret = -ENOMEM;
3435 goto done;
3436 }
3437 new_crypt->ops = ops;
3438 if (new_crypt->ops)
3439 new_crypt->priv =
3440 new_crypt->ops->init(param->u.crypt.idx);
3441
3442 if (new_crypt->priv == NULL) {
3443 kfree(new_crypt);
3444 param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3445 ret = -EINVAL;
3446 goto done;
3447 }
3448
3449 *crypt = new_crypt;
3450 }
3451
3452 if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3453 (*crypt)->ops->set_key(param->u.crypt.key,
3454 param->u.crypt.key_len, param->u.crypt.seq,
3455 (*crypt)->priv) < 0) {
3456 netdev_info(ieee->dev, "key setting failed\n");
3457 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3458 ret = -EINVAL;
3459 goto done;
3460 }
3461
3462 skip_host_crypt:
3463 if (param->u.crypt.set_tx) {
3464 ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
3465 sec.active_key = param->u.crypt.idx;
3466 sec.flags |= SEC_ACTIVE_KEY;
3467 } else
3468 sec.flags &= ~SEC_ACTIVE_KEY;
3469
3470 if (param->u.crypt.alg != NULL) {
3471 memcpy(sec.keys[param->u.crypt.idx],
3472 param->u.crypt.key,
3473 param->u.crypt.key_len);
3474 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3475 sec.flags |= (1 << param->u.crypt.idx);
3476
3477 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3478 sec.flags |= SEC_LEVEL;
3479 sec.level = SEC_LEVEL_1;
3480 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3481 sec.flags |= SEC_LEVEL;
3482 sec.level = SEC_LEVEL_2;
3483 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3484 sec.flags |= SEC_LEVEL;
3485 sec.level = SEC_LEVEL_3;
3486 }
3487 }
3488 done:
3489 if (ieee->set_security)
3490 ieee->set_security(ieee->dev, &sec);
3491
3492 /* Do not reset port if card is in Managed mode since resetting will
3493 * generate new IEEE 802.11 authentication which may end up in looping
3494 * with IEEE 802.1X. If your hardware requires a reset after WEP
3495 * configuration (for example... Prism2), implement the reset_port in
3496 * the callbacks structures used to initialize the 802.11 stack. */
3497 if (ieee->reset_on_keychange &&
3498 ieee->iw_mode != IW_MODE_INFRA &&
3499 ieee->reset_port &&
3500 ieee->reset_port(ieee->dev)) {
3501 netdev_info(ieee->dev, "reset_port failed\n");
3502 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3503 return -EINVAL;
3504 }
3505
3506 return ret;
3507 }
3508
3509 inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon,
3510 struct rtllib_device *ieee, u16 asRsn)
3511 {
3512 struct sk_buff *skb;
3513 struct rtllib_disauth *disauth;
3514 int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3515
3516 skb = dev_alloc_skb(len);
3517 if (!skb)
3518 return NULL;
3519
3520 skb_reserve(skb, ieee->tx_headroom);
3521
3522 disauth = (struct rtllib_disauth *) skb_put(skb,
3523 sizeof(struct rtllib_disauth));
3524 disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3525 disauth->header.duration_id = 0;
3526
3527 memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN);
3528 memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3529 memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN);
3530
3531 disauth->reason = cpu_to_le16(asRsn);
3532 return skb;
3533 }
3534
3535 inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon,
3536 struct rtllib_device *ieee, u16 asRsn)
3537 {
3538 struct sk_buff *skb;
3539 struct rtllib_disassoc *disass;
3540 int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3541
3542 skb = dev_alloc_skb(len);
3543
3544 if (!skb)
3545 return NULL;
3546
3547 skb_reserve(skb, ieee->tx_headroom);
3548
3549 disass = (struct rtllib_disassoc *) skb_put(skb,
3550 sizeof(struct rtllib_disassoc));
3551 disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3552 disass->header.duration_id = 0;
3553
3554 memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
3555 memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3556 memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);
3557
3558 disass->reason = cpu_to_le16(asRsn);
3559 return skb;
3560 }
3561
3562 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3563 {
3564 struct rtllib_network *beacon = &ieee->current_network;
3565 struct sk_buff *skb;
3566
3567 if (deauth)
3568 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3569 else
3570 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3571
3572 if (skb)
3573 softmac_mgmt_xmit(skb, ieee);
3574 }
3575
3576 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3577 {
3578 static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3579 static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3580 int wpa_ie_len = ieee->wpa_ie_len;
3581 struct lib80211_crypt_data *crypt;
3582 int encrypt;
3583
3584 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3585 encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3586 || (ieee->host_encrypt && crypt && crypt->ops &&
3587 (0 == strcmp(crypt->ops->name, "R-WEP")));
3588
3589 /* simply judge */
3590 if (encrypt && (wpa_ie_len == 0)) {
3591 return SEC_ALG_WEP;
3592 } else if ((wpa_ie_len != 0)) {
3593 if (((ieee->wpa_ie[0] == 0xdd) &&
3594 (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3595 ((ieee->wpa_ie[0] == 0x30) &&
3596 (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3597 return SEC_ALG_CCMP;
3598 else
3599 return SEC_ALG_TKIP;
3600 } else {
3601 return SEC_ALG_NONE;
3602 }
3603 }
3604
3605 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3606 u8 is_mesh)
3607 {
3608 struct ieee_param *param;
3609 int ret = 0;
3610
3611 down(&ieee->wx_sem);
3612
3613 if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3614 ret = -EINVAL;
3615 goto out;
3616 }
3617
3618 param = memdup_user(p->pointer, p->length);
3619 if (IS_ERR(param)) {
3620 ret = PTR_ERR(param);
3621 goto out;
3622 }
3623
3624 switch (param->cmd) {
3625 case IEEE_CMD_SET_WPA_PARAM:
3626 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3627 param->u.wpa_param.value);
3628 break;
3629
3630 case IEEE_CMD_SET_WPA_IE:
3631 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3632 break;
3633
3634 case IEEE_CMD_SET_ENCRYPTION:
3635 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3636 break;
3637
3638 case IEEE_CMD_MLME:
3639 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3640 param->u.mlme.reason_code);
3641 break;
3642
3643 default:
3644 netdev_info(ieee->dev, "Unknown WPA supplicant request: %d\n",
3645 param->cmd);
3646 ret = -EOPNOTSUPP;
3647 break;
3648 }
3649
3650 if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3651 ret = -EFAULT;
3652
3653 kfree(param);
3654 out:
3655 up(&ieee->wx_sem);
3656
3657 return ret;
3658 }
3659 EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
3660
3661 static void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3662 {
3663 u8 OpMode;
3664 u8 i;
3665 bool bFilterOutNonAssociatedBSSID = false;
3666
3667 rtllib->state = RTLLIB_NOLINK;
3668
3669 for (i = 0; i < 6; i++)
3670 rtllib->current_network.bssid[i] = 0x55;
3671
3672 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3673 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3674 rtllib->current_network.bssid);
3675 OpMode = RT_OP_MODE_NO_LINK;
3676 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3677 rtllib_stop_send_beacons(rtllib);
3678
3679 bFilterOutNonAssociatedBSSID = false;
3680 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3681 (u8 *)(&bFilterOutNonAssociatedBSSID));
3682 notify_wx_assoc_event(rtllib);
3683
3684 }
3685
3686 static void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta,
3687 u8 asRsn)
3688 {
3689 u8 i;
3690 u8 OpMode;
3691
3692 RemovePeerTS(rtllib, asSta);
3693
3694 if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) {
3695 rtllib->state = RTLLIB_NOLINK;
3696
3697 for (i = 0; i < 6; i++)
3698 rtllib->current_network.bssid[i] = 0x22;
3699 OpMode = RT_OP_MODE_NO_LINK;
3700 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3701 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3702 (u8 *)(&OpMode));
3703 rtllib_disassociate(rtllib);
3704
3705 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3706 rtllib->current_network.bssid);
3707
3708 }
3709
3710 }
3711
3712 static void
3713 rtllib_MgntDisconnectAP(
3714 struct rtllib_device *rtllib,
3715 u8 asRsn
3716 )
3717 {
3718 bool bFilterOutNonAssociatedBSSID = false;
3719
3720 bFilterOutNonAssociatedBSSID = false;
3721 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3722 (u8 *)(&bFilterOutNonAssociatedBSSID));
3723 rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3724 asRsn);
3725
3726 rtllib->state = RTLLIB_NOLINK;
3727 }
3728
3729 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3730 {
3731 if (rtllib->ps != RTLLIB_PS_DISABLED)
3732 rtllib->sta_wake_up(rtllib->dev);
3733
3734 if (rtllib->state == RTLLIB_LINKED) {
3735 if (rtllib->iw_mode == IW_MODE_ADHOC)
3736 rtllib_MgntDisconnectIBSS(rtllib);
3737 if (rtllib->iw_mode == IW_MODE_INFRA)
3738 rtllib_MgntDisconnectAP(rtllib, asRsn);
3739
3740 }
3741
3742 return true;
3743 }
3744 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3745
3746 void notify_wx_assoc_event(struct rtllib_device *ieee)
3747 {
3748 union iwreq_data wrqu;
3749
3750 if (ieee->cannot_notify)
3751 return;
3752
3753 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3754 if (ieee->state == RTLLIB_LINKED)
3755 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3756 ETH_ALEN);
3757 else {
3758
3759 netdev_info(ieee->dev, "%s(): Tell user space disconnected\n",
3760 __func__);
3761 eth_zero_addr(wrqu.ap_addr.sa_data);
3762 }
3763 wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3764 }
3765 EXPORT_SYMBOL(notify_wx_assoc_event);
Linux kernel - Deliverables
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