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