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Merge tag 'ecryptfs-3.6-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / staging / rtl8192e / rtllib_softmac.c
1 /* IEEE 802.11 SoftMAC layer
2 * Copyright (c) 2005 Andrea Merello <andreamrl@tiscali.it>
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 "dot11d.h"
23
24 short rtllib_is_54g(struct rtllib_network *net)
25 {
26 return (net->rates_ex_len > 0) || (net->rates_len > 4);
27 }
28
29 short rtllib_is_shortslot(const struct rtllib_network *net)
30 {
31 return net->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME;
32 }
33
34 /* returns the total length needed for placing the RATE MFIE
35 * tag and the EXTENDED RATE MFIE tag if needed.
36 * It encludes two bytes per tag for the tag itself and its len
37 */
38 static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
39 {
40 unsigned int rate_len = 0;
41
42 if (ieee->modulation & RTLLIB_CCK_MODULATION)
43 rate_len = RTLLIB_CCK_RATE_LEN + 2;
44
45 if (ieee->modulation & RTLLIB_OFDM_MODULATION)
46
47 rate_len += RTLLIB_OFDM_RATE_LEN + 2;
48
49 return rate_len;
50 }
51
52 /* place the MFIE rate, tag to the memory (double) pointed.
53 * Then it updates the pointer so that
54 * it points after the new MFIE tag added.
55 */
56 static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
57 {
58 u8 *tag = *tag_p;
59
60 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
61 *tag++ = MFIE_TYPE_RATES;
62 *tag++ = 4;
63 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
64 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
65 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
66 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
67 }
68
69 /* We may add an option for custom rates that specific HW
70 * might support */
71 *tag_p = tag;
72 }
73
74 static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p)
75 {
76 u8 *tag = *tag_p;
77
78 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
79 *tag++ = MFIE_TYPE_RATES_EX;
80 *tag++ = 8;
81 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB;
82 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB;
83 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB;
84 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB;
85 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB;
86 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB;
87 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB;
88 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB;
89 }
90 /* We may add an option for custom rates that specific HW might
91 * support */
92 *tag_p = tag;
93 }
94
95 static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
96 {
97 u8 *tag = *tag_p;
98
99 *tag++ = MFIE_TYPE_GENERIC;
100 *tag++ = 7;
101 *tag++ = 0x00;
102 *tag++ = 0x50;
103 *tag++ = 0xf2;
104 *tag++ = 0x02;
105 *tag++ = 0x00;
106 *tag++ = 0x01;
107 *tag++ = MAX_SP_Len;
108 *tag_p = tag;
109 }
110
111 void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
112 {
113 u8 *tag = *tag_p;
114
115 *tag++ = MFIE_TYPE_GENERIC;
116 *tag++ = 7;
117 *tag++ = 0x00;
118 *tag++ = 0xe0;
119 *tag++ = 0x4c;
120 *tag++ = 0x01;
121 *tag++ = 0x02;
122 *tag++ = 0x11;
123 *tag++ = 0x00;
124
125 *tag_p = tag;
126 printk(KERN_ALERT "This is enable turbo mode IE process\n");
127 }
128
129 static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
130 {
131 int nh;
132 nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
133
134 /*
135 * if the queue is full but we have newer frames then
136 * just overwrites the oldest.
137 *
138 * if (nh == ieee->mgmt_queue_tail)
139 * return -1;
140 */
141 ieee->mgmt_queue_head = nh;
142 ieee->mgmt_queue_ring[nh] = skb;
143
144 }
145
146 static struct sk_buff *dequeue_mgmt(struct rtllib_device *ieee)
147 {
148 struct sk_buff *ret;
149
150 if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head)
151 return NULL;
152
153 ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail];
154
155 ieee->mgmt_queue_tail =
156 (ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM;
157
158 return ret;
159 }
160
161 static void init_mgmt_queue(struct rtllib_device *ieee)
162 {
163 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
164 }
165
166
167 u8
168 MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
169 {
170 u16 i;
171 u8 QueryRate = 0;
172 u8 BasicRate;
173
174
175 for (i = 0; i < ieee->current_network.rates_len; i++) {
176 BasicRate = ieee->current_network.rates[i]&0x7F;
177 if (!rtllib_is_cck_rate(BasicRate)) {
178 if (QueryRate == 0) {
179 QueryRate = BasicRate;
180 } else {
181 if (BasicRate < QueryRate)
182 QueryRate = BasicRate;
183 }
184 }
185 }
186
187 if (QueryRate == 0) {
188 QueryRate = 12;
189 printk(KERN_INFO "No BasicRate found!!\n");
190 }
191 return QueryRate;
192 }
193
194 u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
195 {
196 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
197 u8 rate;
198
199 if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
200 rate = 0x0c;
201 else
202 rate = ieee->basic_rate & 0x7f;
203
204 if (rate == 0) {
205 if (ieee->mode == IEEE_A ||
206 ieee->mode == IEEE_N_5G ||
207 (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
208 rate = 0x0c;
209 else
210 rate = 0x02;
211 }
212
213 return rate;
214 }
215
216 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
217 {
218 unsigned long flags;
219 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
220 struct rtllib_hdr_3addr *header =
221 (struct rtllib_hdr_3addr *) skb->data;
222
223 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
224 spin_lock_irqsave(&ieee->lock, flags);
225
226 /* called with 2nd param 0, no mgmt lock required */
227 rtllib_sta_wakeup(ieee, 0);
228
229 if (header->frame_ctl == RTLLIB_STYPE_BEACON)
230 tcb_desc->queue_index = BEACON_QUEUE;
231 else
232 tcb_desc->queue_index = MGNT_QUEUE;
233
234 if (ieee->disable_mgnt_queue)
235 tcb_desc->queue_index = HIGH_QUEUE;
236
237 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
238 tcb_desc->RATRIndex = 7;
239 tcb_desc->bTxDisableRateFallBack = 1;
240 tcb_desc->bTxUseDriverAssingedRate = 1;
241 if (single) {
242 if (ieee->queue_stop) {
243 enqueue_mgmt(ieee, skb);
244 } else {
245 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
246
247 if (ieee->seq_ctrl[0] == 0xFFF)
248 ieee->seq_ctrl[0] = 0;
249 else
250 ieee->seq_ctrl[0]++;
251
252 /* avoid watchdog triggers */
253 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
254 ieee->basic_rate);
255 }
256
257 spin_unlock_irqrestore(&ieee->lock, flags);
258 } else {
259 spin_unlock_irqrestore(&ieee->lock, flags);
260 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
261
262 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
263
264 if (ieee->seq_ctrl[0] == 0xFFF)
265 ieee->seq_ctrl[0] = 0;
266 else
267 ieee->seq_ctrl[0]++;
268
269 /* check wether the managed packet queued greater than 5 */
270 if (!ieee->check_nic_enough_desc(ieee->dev, tcb_desc->queue_index) ||
271 (skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) != 0) ||
272 (ieee->queue_stop)) {
273 /* insert the skb packet to the management queue */
274 /* as for the completion function, it does not need
275 * to check it any more.
276 * */
277 printk(KERN_INFO "%s():insert to waitqueue, queue_index"
278 ":%d!\n", __func__, tcb_desc->queue_index);
279 skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
280 skb);
281 } else {
282 ieee->softmac_hard_start_xmit(skb, ieee->dev);
283 }
284 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
285 }
286 }
287
288 inline void softmac_ps_mgmt_xmit(struct sk_buff *skb,
289 struct rtllib_device *ieee)
290 {
291 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
292 struct rtllib_hdr_3addr *header =
293 (struct rtllib_hdr_3addr *) skb->data;
294 u16 fc, type, stype;
295 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
296
297 fc = header->frame_ctl;
298 type = WLAN_FC_GET_TYPE(fc);
299 stype = WLAN_FC_GET_STYPE(fc);
300
301
302 if (stype != RTLLIB_STYPE_PSPOLL)
303 tcb_desc->queue_index = MGNT_QUEUE;
304 else
305 tcb_desc->queue_index = HIGH_QUEUE;
306
307 if (ieee->disable_mgnt_queue)
308 tcb_desc->queue_index = HIGH_QUEUE;
309
310
311 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
312 tcb_desc->RATRIndex = 7;
313 tcb_desc->bTxDisableRateFallBack = 1;
314 tcb_desc->bTxUseDriverAssingedRate = 1;
315 if (single) {
316 if (type != RTLLIB_FTYPE_CTL) {
317 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
318
319 if (ieee->seq_ctrl[0] == 0xFFF)
320 ieee->seq_ctrl[0] = 0;
321 else
322 ieee->seq_ctrl[0]++;
323
324 }
325 /* avoid watchdog triggers */
326 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
327 ieee->basic_rate);
328
329 } else {
330 if (type != RTLLIB_FTYPE_CTL) {
331 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
332
333 if (ieee->seq_ctrl[0] == 0xFFF)
334 ieee->seq_ctrl[0] = 0;
335 else
336 ieee->seq_ctrl[0]++;
337 }
338 ieee->softmac_hard_start_xmit(skb, ieee->dev);
339
340 }
341 }
342
343 inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
344 {
345 unsigned int len, rate_len;
346 u8 *tag;
347 struct sk_buff *skb;
348 struct rtllib_probe_request *req;
349
350 len = ieee->current_network.ssid_len;
351
352 rate_len = rtllib_MFIE_rate_len(ieee);
353
354 skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
355 2 + len + rate_len + ieee->tx_headroom);
356
357 if (!skb)
358 return NULL;
359
360 skb_reserve(skb, ieee->tx_headroom);
361
362 req = (struct rtllib_probe_request *) skb_put(skb,
363 sizeof(struct rtllib_probe_request));
364 req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
365 req->header.duration_id = 0;
366
367 memset(req->header.addr1, 0xff, ETH_ALEN);
368 memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
369 memset(req->header.addr3, 0xff, ETH_ALEN);
370
371 tag = (u8 *) skb_put(skb, len + 2 + rate_len);
372
373 *tag++ = MFIE_TYPE_SSID;
374 *tag++ = len;
375 memcpy(tag, ieee->current_network.ssid, len);
376 tag += len;
377
378 rtllib_MFIE_Brate(ieee, &tag);
379 rtllib_MFIE_Grate(ieee, &tag);
380
381 return skb;
382 }
383
384 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
385
386 static void rtllib_send_beacon(struct rtllib_device *ieee)
387 {
388 struct sk_buff *skb;
389 if (!ieee->ieee_up)
390 return;
391 skb = rtllib_get_beacon_(ieee);
392
393 if (skb) {
394 softmac_mgmt_xmit(skb, ieee);
395 ieee->softmac_stats.tx_beacons++;
396 }
397
398 if (ieee->beacon_txing && ieee->ieee_up)
399 mod_timer(&ieee->beacon_timer, jiffies +
400 (MSECS(ieee->current_network.beacon_interval - 5)));
401 }
402
403
404 static void rtllib_send_beacon_cb(unsigned long _ieee)
405 {
406 struct rtllib_device *ieee =
407 (struct rtllib_device *) _ieee;
408 unsigned long flags;
409
410 spin_lock_irqsave(&ieee->beacon_lock, flags);
411 rtllib_send_beacon(ieee);
412 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
413 }
414
415 /*
416 * Description:
417 * Enable network monitor mode, all rx packets will be received.
418 */
419 void rtllib_EnableNetMonitorMode(struct net_device *dev,
420 bool bInitState)
421 {
422 struct rtllib_device *ieee = netdev_priv_rsl(dev);
423
424 printk(KERN_INFO "========>Enter Monitor Mode\n");
425
426 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
427 }
428
429
430 /*
431 * Description:
432 * Disable network network monitor mode, only packets destinated to
433 * us will be received.
434 */
435 void rtllib_DisableNetMonitorMode(struct net_device *dev,
436 bool bInitState)
437 {
438 struct rtllib_device *ieee = netdev_priv_rsl(dev);
439
440 printk(KERN_INFO "========>Exit Monitor Mode\n");
441
442 ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
443 }
444
445
446 /*
447 * Description:
448 * This enables the specialized promiscuous mode required by Intel.
449 * In this mode, Intel intends to hear traffics from/to other STAs in the
450 * same BSS. Therefore we don't have to disable checking BSSID and we only need
451 * to allow all dest. BUT: if we enable checking BSSID then we can't recv
452 * packets from other STA.
453 */
454 void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
455 bool bInitState)
456 {
457 bool bFilterOutNonAssociatedBSSID = false;
458
459 struct rtllib_device *ieee = netdev_priv_rsl(dev);
460
461 printk(KERN_INFO "========>Enter Intel Promiscuous Mode\n");
462
463 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
464 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
465 (u8 *)&bFilterOutNonAssociatedBSSID);
466
467 ieee->bNetPromiscuousMode = true;
468 }
469 EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode);
470
471
472 /*
473 * Description:
474 * This disables the specialized promiscuous mode required by Intel.
475 * See MgntEnableIntelPromiscuousMode for detail.
476 */
477 void rtllib_DisableIntelPromiscuousMode(struct net_device *dev,
478 bool bInitState)
479 {
480 bool bFilterOutNonAssociatedBSSID = true;
481
482 struct rtllib_device *ieee = netdev_priv_rsl(dev);
483
484 printk(KERN_INFO "========>Exit Intel Promiscuous Mode\n");
485
486 ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
487 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
488 (u8 *)&bFilterOutNonAssociatedBSSID);
489
490 ieee->bNetPromiscuousMode = false;
491 }
492 EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode);
493
494 static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh)
495 {
496 struct sk_buff *skb;
497 skb = rtllib_probe_req(ieee);
498 if (skb) {
499 softmac_mgmt_xmit(skb, ieee);
500 ieee->softmac_stats.tx_probe_rq++;
501 }
502 }
503
504
505 void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh)
506 {
507 if (ieee->active_scan && (ieee->softmac_features &
508 IEEE_SOFTMAC_PROBERQ)) {
509 rtllib_send_probe(ieee, 0);
510 rtllib_send_probe(ieee, 0);
511 }
512 }
513
514 static void rtllib_softmac_hint11d_wq(void *data)
515 {
516 }
517
518 void rtllib_update_active_chan_map(struct rtllib_device *ieee)
519 {
520 memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map,
521 MAX_CHANNEL_NUMBER+1);
522 }
523
524 /* this performs syncro scan blocking the caller until all channels
525 * in the allowed channel map has been checked.
526 */
527 void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
528 {
529 union iwreq_data wrqu;
530 short ch = 0;
531
532 rtllib_update_active_chan_map(ieee);
533
534 ieee->be_scan_inprogress = true;
535
536 down(&ieee->scan_sem);
537
538 while (1) {
539 do {
540 ch++;
541 if (ch > MAX_CHANNEL_NUMBER)
542 goto out; /* scan completed */
543 } while (!ieee->active_channel_map[ch]);
544
545 /* this fuction can be called in two situations
546 * 1- We have switched to ad-hoc mode and we are
547 * performing a complete syncro scan before conclude
548 * there are no interesting cell and to create a
549 * new one. In this case the link state is
550 * RTLLIB_NOLINK until we found an interesting cell.
551 * If so the ieee8021_new_net, called by the RX path
552 * will set the state to RTLLIB_LINKED, so we stop
553 * scanning
554 * 2- We are linked and the root uses run iwlist scan.
555 * So we switch to RTLLIB_LINKED_SCANNING to remember
556 * that we are still logically linked (not interested in
557 * new network events, despite for updating the net list,
558 * but we are temporarly 'unlinked' as the driver shall
559 * not filter RX frames and the channel is changing.
560 * So the only situation in which are interested is to check
561 * if the state become LINKED because of the #1 situation
562 */
563
564 if (ieee->state == RTLLIB_LINKED)
565 goto out;
566 if (ieee->sync_scan_hurryup) {
567 printk(KERN_INFO "============>sync_scan_hurryup out\n");
568 goto out;
569 }
570
571 ieee->set_chan(ieee->dev, ch);
572 if (ieee->active_channel_map[ch] == 1)
573 rtllib_send_probe_requests(ieee, 0);
574
575 /* this prevent excessive time wait when we
576 * need to wait for a syncro scan to end..
577 */
578 msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME);
579 }
580 out:
581 ieee->actscanning = false;
582 ieee->sync_scan_hurryup = 0;
583
584 if (ieee->state >= RTLLIB_LINKED) {
585 if (IS_DOT11D_ENABLE(ieee))
586 DOT11D_ScanComplete(ieee);
587 }
588 up(&ieee->scan_sem);
589
590 ieee->be_scan_inprogress = false;
591
592 memset(&wrqu, 0, sizeof(wrqu));
593 wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
594 }
595
596 static void rtllib_softmac_scan_wq(void *data)
597 {
598 struct rtllib_device *ieee = container_of_dwork_rsl(data,
599 struct rtllib_device, softmac_scan_wq);
600 u8 last_channel = ieee->current_network.channel;
601
602 rtllib_update_active_chan_map(ieee);
603
604 if (!ieee->ieee_up)
605 return;
606 if (rtllib_act_scanning(ieee, true) == true)
607 return;
608
609 down(&ieee->scan_sem);
610
611 if (ieee->eRFPowerState == eRfOff) {
612 printk(KERN_INFO "======>%s():rf state is eRfOff, return\n",
613 __func__);
614 goto out1;
615 }
616
617 do {
618 ieee->current_network.channel =
619 (ieee->current_network.channel + 1) %
620 MAX_CHANNEL_NUMBER;
621 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) {
622 if (!ieee->active_channel_map[ieee->current_network.channel])
623 ieee->current_network.channel = 6;
624 goto out; /* no good chans */
625 }
626 } while (!ieee->active_channel_map[ieee->current_network.channel]);
627
628 if (ieee->scanning_continue == 0)
629 goto out;
630
631 ieee->set_chan(ieee->dev, ieee->current_network.channel);
632
633 if (ieee->active_channel_map[ieee->current_network.channel] == 1)
634 rtllib_send_probe_requests(ieee, 0);
635
636 queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq,
637 MSECS(RTLLIB_SOFTMAC_SCAN_TIME));
638
639 up(&ieee->scan_sem);
640 return;
641
642 out:
643 if (IS_DOT11D_ENABLE(ieee))
644 DOT11D_ScanComplete(ieee);
645 ieee->current_network.channel = last_channel;
646
647 out1:
648 ieee->actscanning = false;
649 ieee->scan_watch_dog = 0;
650 ieee->scanning_continue = 0;
651 up(&ieee->scan_sem);
652 }
653
654
655
656 static void rtllib_beacons_start(struct rtllib_device *ieee)
657 {
658 unsigned long flags;
659 spin_lock_irqsave(&ieee->beacon_lock, flags);
660
661 ieee->beacon_txing = 1;
662 rtllib_send_beacon(ieee);
663
664 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
665 }
666
667 static void rtllib_beacons_stop(struct rtllib_device *ieee)
668 {
669 unsigned long flags;
670
671 spin_lock_irqsave(&ieee->beacon_lock, flags);
672
673 ieee->beacon_txing = 0;
674 del_timer_sync(&ieee->beacon_timer);
675
676 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
677
678 }
679
680
681 void rtllib_stop_send_beacons(struct rtllib_device *ieee)
682 {
683 if (ieee->stop_send_beacons)
684 ieee->stop_send_beacons(ieee->dev);
685 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
686 rtllib_beacons_stop(ieee);
687 }
688 EXPORT_SYMBOL(rtllib_stop_send_beacons);
689
690
691 void rtllib_start_send_beacons(struct rtllib_device *ieee)
692 {
693 if (ieee->start_send_beacons)
694 ieee->start_send_beacons(ieee->dev);
695 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
696 rtllib_beacons_start(ieee);
697 }
698 EXPORT_SYMBOL(rtllib_start_send_beacons);
699
700
701 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
702 {
703 down(&ieee->scan_sem);
704 ieee->scan_watch_dog = 0;
705 if (ieee->scanning_continue == 1) {
706 ieee->scanning_continue = 0;
707 ieee->actscanning = 0;
708
709 cancel_delayed_work(&ieee->softmac_scan_wq);
710 }
711
712 up(&ieee->scan_sem);
713 }
714
715 void rtllib_stop_scan(struct rtllib_device *ieee)
716 {
717 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
718 rtllib_softmac_stop_scan(ieee);
719 } else {
720 if (ieee->rtllib_stop_hw_scan)
721 ieee->rtllib_stop_hw_scan(ieee->dev);
722 }
723 }
724 EXPORT_SYMBOL(rtllib_stop_scan);
725
726 void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
727 {
728 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
729 ieee->sync_scan_hurryup = 1;
730 } else {
731 if (ieee->rtllib_stop_hw_scan)
732 ieee->rtllib_stop_hw_scan(ieee->dev);
733 }
734 }
735 EXPORT_SYMBOL(rtllib_stop_scan_syncro);
736
737 bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
738 {
739 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
740 if (sync_scan)
741 return ieee->be_scan_inprogress;
742 else
743 return ieee->actscanning || ieee->be_scan_inprogress;
744 } else {
745 return test_bit(STATUS_SCANNING, &ieee->status);
746 }
747 }
748 EXPORT_SYMBOL(rtllib_act_scanning);
749
750 /* called with ieee->lock held */
751 static void rtllib_start_scan(struct rtllib_device *ieee)
752 {
753 RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
754 if (ieee->rtllib_ips_leave_wq != NULL)
755 ieee->rtllib_ips_leave_wq(ieee->dev);
756
757 if (IS_DOT11D_ENABLE(ieee)) {
758 if (IS_COUNTRY_IE_VALID(ieee))
759 RESET_CIE_WATCHDOG(ieee);
760 }
761 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
762 if (ieee->scanning_continue == 0) {
763 ieee->actscanning = true;
764 ieee->scanning_continue = 1;
765 queue_delayed_work_rsl(ieee->wq,
766 &ieee->softmac_scan_wq, 0);
767 }
768 } else {
769 if (ieee->rtllib_start_hw_scan)
770 ieee->rtllib_start_hw_scan(ieee->dev);
771 }
772 }
773
774 /* called with wx_sem held */
775 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
776 {
777 if (IS_DOT11D_ENABLE(ieee)) {
778 if (IS_COUNTRY_IE_VALID(ieee))
779 RESET_CIE_WATCHDOG(ieee);
780 }
781 ieee->sync_scan_hurryup = 0;
782 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
783 rtllib_softmac_scan_syncro(ieee, is_mesh);
784 } else {
785 if (ieee->rtllib_start_hw_scan)
786 ieee->rtllib_start_hw_scan(ieee->dev);
787 }
788 }
789 EXPORT_SYMBOL(rtllib_start_scan_syncro);
790
791 inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon,
792 struct rtllib_device *ieee, int challengelen, u8 *daddr)
793 {
794 struct sk_buff *skb;
795 struct rtllib_authentication *auth;
796 int len = 0;
797 len = sizeof(struct rtllib_authentication) + challengelen +
798 ieee->tx_headroom + 4;
799 skb = dev_alloc_skb(len);
800
801 if (!skb)
802 return NULL;
803
804 skb_reserve(skb, ieee->tx_headroom);
805
806 auth = (struct rtllib_authentication *)
807 skb_put(skb, sizeof(struct rtllib_authentication));
808
809 auth->header.frame_ctl = RTLLIB_STYPE_AUTH;
810 if (challengelen)
811 auth->header.frame_ctl |= RTLLIB_FCTL_WEP;
812
813 auth->header.duration_id = 0x013a;
814 memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN);
815 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
816 memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN);
817 if (ieee->auth_mode == 0)
818 auth->algorithm = WLAN_AUTH_OPEN;
819 else if (ieee->auth_mode == 1)
820 auth->algorithm = WLAN_AUTH_SHARED_KEY;
821 else if (ieee->auth_mode == 2)
822 auth->algorithm = WLAN_AUTH_OPEN;
823 auth->transaction = cpu_to_le16(ieee->associate_seq);
824 ieee->associate_seq++;
825
826 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
827
828 return skb;
829 }
830
831 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, u8 *dest)
832 {
833 u8 *tag;
834 int beacon_size;
835 struct rtllib_probe_response *beacon_buf;
836 struct sk_buff *skb = NULL;
837 int encrypt;
838 int atim_len, erp_len;
839 struct lib80211_crypt_data *crypt;
840
841 char *ssid = ieee->current_network.ssid;
842 int ssid_len = ieee->current_network.ssid_len;
843 int rate_len = ieee->current_network.rates_len+2;
844 int rate_ex_len = ieee->current_network.rates_ex_len;
845 int wpa_ie_len = ieee->wpa_ie_len;
846 u8 erpinfo_content = 0;
847
848 u8 *tmp_ht_cap_buf = NULL;
849 u8 tmp_ht_cap_len = 0;
850 u8 *tmp_ht_info_buf = NULL;
851 u8 tmp_ht_info_len = 0;
852 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
853 u8 *tmp_generic_ie_buf = NULL;
854 u8 tmp_generic_ie_len = 0;
855
856 if (rate_ex_len > 0)
857 rate_ex_len += 2;
858
859 if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
860 atim_len = 4;
861 else
862 atim_len = 0;
863
864 if ((ieee->current_network.mode == IEEE_G) ||
865 (ieee->current_network.mode == IEEE_N_24G &&
866 ieee->pHTInfo->bCurSuppCCK)) {
867 erp_len = 3;
868 erpinfo_content = 0;
869 if (ieee->current_network.buseprotection)
870 erpinfo_content |= ERP_UseProtection;
871 } else
872 erp_len = 0;
873
874 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
875 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
876 ((0 == strcmp(crypt->ops->name, "R-WEP") || wpa_ie_len));
877 if (ieee->pHTInfo->bCurrentHTSupport) {
878 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
879 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
880 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
881 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
882 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
883 &tmp_ht_cap_len, encrypt, false);
884 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
885 encrypt);
886
887 if (pHTInfo->bRegRT2RTAggregation) {
888 tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
889 tmp_generic_ie_len =
890 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
891 HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
892 &tmp_generic_ie_len);
893 }
894 }
895
896 beacon_size = sizeof(struct rtllib_probe_response)+2+
897 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
898 + wpa_ie_len + ieee->tx_headroom;
899 skb = dev_alloc_skb(beacon_size);
900 if (!skb)
901 return NULL;
902
903 skb_reserve(skb, ieee->tx_headroom);
904
905 beacon_buf = (struct rtllib_probe_response *) skb_put(skb,
906 (beacon_size - ieee->tx_headroom));
907 memcpy(beacon_buf->header.addr1, dest, ETH_ALEN);
908 memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
909 memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN);
910
911 beacon_buf->header.duration_id = 0;
912 beacon_buf->beacon_interval =
913 cpu_to_le16(ieee->current_network.beacon_interval);
914 beacon_buf->capability =
915 cpu_to_le16(ieee->current_network.capability &
916 WLAN_CAPABILITY_IBSS);
917 beacon_buf->capability |=
918 cpu_to_le16(ieee->current_network.capability &
919 WLAN_CAPABILITY_SHORT_PREAMBLE);
920
921 if (ieee->short_slot && (ieee->current_network.capability &
922 WLAN_CAPABILITY_SHORT_SLOT_TIME))
923 cpu_to_le16((beacon_buf->capability |=
924 WLAN_CAPABILITY_SHORT_SLOT_TIME));
925
926 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
927 if (encrypt)
928 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
929
930
931 beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
932 beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
933 beacon_buf->info_element[0].len = ssid_len;
934
935 tag = (u8 *) beacon_buf->info_element[0].data;
936
937 memcpy(tag, ssid, ssid_len);
938
939 tag += ssid_len;
940
941 *(tag++) = MFIE_TYPE_RATES;
942 *(tag++) = rate_len-2;
943 memcpy(tag, ieee->current_network.rates, rate_len-2);
944 tag += rate_len-2;
945
946 *(tag++) = MFIE_TYPE_DS_SET;
947 *(tag++) = 1;
948 *(tag++) = ieee->current_network.channel;
949
950 if (atim_len) {
951 u16 val16;
952 *(tag++) = MFIE_TYPE_IBSS_SET;
953 *(tag++) = 2;
954 val16 = cpu_to_le16(ieee->current_network.atim_window);
955 memcpy((u8 *)tag, (u8 *)&val16, 2);
956 tag += 2;
957 }
958
959 if (erp_len) {
960 *(tag++) = MFIE_TYPE_ERP;
961 *(tag++) = 1;
962 *(tag++) = erpinfo_content;
963 }
964 if (rate_ex_len) {
965 *(tag++) = MFIE_TYPE_RATES_EX;
966 *(tag++) = rate_ex_len-2;
967 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
968 tag += rate_ex_len-2;
969 }
970
971 if (wpa_ie_len) {
972 if (ieee->iw_mode == IW_MODE_ADHOC)
973 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
974 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
975 tag += ieee->wpa_ie_len;
976 }
977 return skb;
978 }
979
980 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
981 {
982 struct sk_buff *skb;
983 u8 *tag;
984
985 struct lib80211_crypt_data *crypt;
986 struct rtllib_assoc_response_frame *assoc;
987 short encrypt;
988
989 unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
990 int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
991 ieee->tx_headroom;
992
993 skb = dev_alloc_skb(len);
994
995 if (!skb)
996 return NULL;
997
998 skb_reserve(skb, ieee->tx_headroom);
999
1000 assoc = (struct rtllib_assoc_response_frame *)
1001 skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
1002
1003 assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
1004 memcpy(assoc->header.addr1, dest, ETH_ALEN);
1005 memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1006 memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1007 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
1008 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
1009
1010
1011 if (ieee->short_slot)
1012 assoc->capability |=
1013 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1014
1015 if (ieee->host_encrypt)
1016 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1017 else
1018 crypt = NULL;
1019
1020 encrypt = (crypt && crypt->ops);
1021
1022 if (encrypt)
1023 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1024
1025 assoc->status = 0;
1026 assoc->aid = cpu_to_le16(ieee->assoc_id);
1027 if (ieee->assoc_id == 0x2007)
1028 ieee->assoc_id = 0;
1029 else
1030 ieee->assoc_id++;
1031
1032 tag = (u8 *) skb_put(skb, rate_len);
1033 rtllib_MFIE_Brate(ieee, &tag);
1034 rtllib_MFIE_Grate(ieee, &tag);
1035
1036 return skb;
1037 }
1038
1039 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1040 u8 *dest)
1041 {
1042 struct sk_buff *skb = NULL;
1043 struct rtllib_authentication *auth;
1044 int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1045 skb = dev_alloc_skb(len);
1046 if (!skb)
1047 return NULL;
1048
1049 skb->len = sizeof(struct rtllib_authentication);
1050
1051 skb_reserve(skb, ieee->tx_headroom);
1052
1053 auth = (struct rtllib_authentication *)
1054 skb_put(skb, sizeof(struct rtllib_authentication));
1055
1056 auth->status = cpu_to_le16(status);
1057 auth->transaction = cpu_to_le16(2);
1058 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1059
1060 memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1061 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1062 memcpy(auth->header.addr1, dest, ETH_ALEN);
1063 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1064 return skb;
1065
1066
1067 }
1068
1069 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1070 {
1071 struct sk_buff *skb;
1072 struct rtllib_hdr_3addr *hdr;
1073
1074 skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1075 if (!skb)
1076 return NULL;
1077
1078 skb_reserve(skb, ieee->tx_headroom);
1079
1080 hdr = (struct rtllib_hdr_3addr *)skb_put(skb,
1081 sizeof(struct rtllib_hdr_3addr));
1082
1083 memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN);
1084 memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN);
1085 memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN);
1086
1087 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1088 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1089 (pwr ? RTLLIB_FCTL_PM : 0));
1090
1091 return skb;
1092
1093
1094 }
1095
1096 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1097 {
1098 struct sk_buff *skb;
1099 struct rtllib_pspoll_hdr *hdr;
1100
1101 skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1102 if (!skb)
1103 return NULL;
1104
1105 skb_reserve(skb, ieee->tx_headroom);
1106
1107 hdr = (struct rtllib_pspoll_hdr *)skb_put(skb,
1108 sizeof(struct rtllib_pspoll_hdr));
1109
1110 memcpy(hdr->bssid, ieee->current_network.bssid, ETH_ALEN);
1111 memcpy(hdr->ta, ieee->dev->dev_addr, ETH_ALEN);
1112
1113 hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1114 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1115 RTLLIB_FCTL_PM);
1116
1117 return skb;
1118
1119 }
1120
1121 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1122 {
1123 struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1124
1125 if (buf)
1126 softmac_mgmt_xmit(buf, ieee);
1127 }
1128
1129
1130 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1131 {
1132 struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1133
1134 if (buf)
1135 softmac_mgmt_xmit(buf, ieee);
1136 }
1137
1138
1139 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1140 {
1141
1142 struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1143 if (buf)
1144 softmac_mgmt_xmit(buf, ieee);
1145 }
1146
1147
1148 inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1149 {
1150 int i = 0;
1151
1152 do {
1153 if ((ieee->PMKIDList[i].bUsed) &&
1154 (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1155 break;
1156 else
1157 i++;
1158 } while (i < NUM_PMKID_CACHE);
1159
1160 if (i == NUM_PMKID_CACHE)
1161 i = -1;
1162 return i;
1163 }
1164
1165 inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon,
1166 struct rtllib_device *ieee)
1167 {
1168 struct sk_buff *skb;
1169 struct rtllib_assoc_request_frame *hdr;
1170 u8 *tag, *ies;
1171 int i;
1172 u8 *ht_cap_buf = NULL;
1173 u8 ht_cap_len = 0;
1174 u8 *realtek_ie_buf = NULL;
1175 u8 realtek_ie_len = 0;
1176 int wpa_ie_len = ieee->wpa_ie_len;
1177 int wps_ie_len = ieee->wps_ie_len;
1178 unsigned int ckip_ie_len = 0;
1179 unsigned int ccxrm_ie_len = 0;
1180 unsigned int cxvernum_ie_len = 0;
1181 struct lib80211_crypt_data *crypt;
1182 int encrypt;
1183 int PMKCacheIdx;
1184
1185 unsigned int rate_len = (beacon->rates_len ?
1186 (beacon->rates_len + 2) : 0) +
1187 (beacon->rates_ex_len ? (beacon->rates_ex_len) +
1188 2 : 0);
1189
1190 unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1191 unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1192
1193 int len = 0;
1194 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1195 if (crypt != NULL)
1196 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1197 ((0 == strcmp(crypt->ops->name, "R-WEP") ||
1198 wpa_ie_len));
1199 else
1200 encrypt = 0;
1201
1202 if ((ieee->rtllib_ap_sec_type &&
1203 (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1204 (ieee->bForcedBgMode == true)) {
1205 ieee->pHTInfo->bEnableHT = 0;
1206 ieee->mode = WIRELESS_MODE_G;
1207 }
1208
1209 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1210 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1211 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1212 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1213 encrypt, true);
1214 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1215 realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1216 realtek_ie_len =
1217 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1218 HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1219 &realtek_ie_len);
1220 }
1221 }
1222
1223 if (beacon->bCkipSupported)
1224 ckip_ie_len = 30+2;
1225 if (beacon->bCcxRmEnable)
1226 ccxrm_ie_len = 6+2;
1227 if (beacon->BssCcxVerNumber >= 2)
1228 cxvernum_ie_len = 5+2;
1229
1230 PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1231 if (PMKCacheIdx >= 0) {
1232 wpa_ie_len += 18;
1233 printk(KERN_INFO "[PMK cache]: WPA2 IE length: %x\n",
1234 wpa_ie_len);
1235 }
1236 len = sizeof(struct rtllib_assoc_request_frame) + 2
1237 + beacon->ssid_len
1238 + rate_len
1239 + wpa_ie_len
1240 + wps_ie_len
1241 + wmm_info_len
1242 + turbo_info_len
1243 + ht_cap_len
1244 + realtek_ie_len
1245 + ckip_ie_len
1246 + ccxrm_ie_len
1247 + cxvernum_ie_len
1248 + ieee->tx_headroom;
1249
1250 skb = dev_alloc_skb(len);
1251
1252 if (!skb)
1253 return NULL;
1254
1255 skb_reserve(skb, ieee->tx_headroom);
1256
1257 hdr = (struct rtllib_assoc_request_frame *)
1258 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1259
1260
1261 hdr->header.frame_ctl = RTLLIB_STYPE_ASSOC_REQ;
1262 hdr->header.duration_id = 37;
1263 memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN);
1264 memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1265 memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN);
1266
1267 memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);
1268
1269 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1270 if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1271 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1272
1273 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1274 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1275
1276 if (ieee->short_slot &&
1277 (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1278 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1279
1280
1281 hdr->listen_interval = beacon->listen_interval;
1282
1283 hdr->info_element[0].id = MFIE_TYPE_SSID;
1284
1285 hdr->info_element[0].len = beacon->ssid_len;
1286 tag = skb_put(skb, beacon->ssid_len);
1287 memcpy(tag, beacon->ssid, beacon->ssid_len);
1288
1289 tag = skb_put(skb, rate_len);
1290
1291 if (beacon->rates_len) {
1292 *tag++ = MFIE_TYPE_RATES;
1293 *tag++ = beacon->rates_len;
1294 for (i = 0; i < beacon->rates_len; i++)
1295 *tag++ = beacon->rates[i];
1296 }
1297
1298 if (beacon->rates_ex_len) {
1299 *tag++ = MFIE_TYPE_RATES_EX;
1300 *tag++ = beacon->rates_ex_len;
1301 for (i = 0; i < beacon->rates_ex_len; i++)
1302 *tag++ = beacon->rates_ex[i];
1303 }
1304
1305 if (beacon->bCkipSupported) {
1306 static u8 AironetIeOui[] = {0x00, 0x01, 0x66};
1307 u8 CcxAironetBuf[30];
1308 struct octet_string osCcxAironetIE;
1309
1310 memset(CcxAironetBuf, 0, 30);
1311 osCcxAironetIE.Octet = CcxAironetBuf;
1312 osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1313 memcpy(osCcxAironetIE.Octet, AironetIeOui,
1314 sizeof(AironetIeOui));
1315
1316 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1317 (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1318 tag = skb_put(skb, ckip_ie_len);
1319 *tag++ = MFIE_TYPE_AIRONET;
1320 *tag++ = osCcxAironetIE.Length;
1321 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1322 tag += osCcxAironetIE.Length;
1323 }
1324
1325 if (beacon->bCcxRmEnable) {
1326 static u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 0x00};
1327 struct octet_string osCcxRmCap;
1328
1329 osCcxRmCap.Octet = CcxRmCapBuf;
1330 osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1331 tag = skb_put(skb, ccxrm_ie_len);
1332 *tag++ = MFIE_TYPE_GENERIC;
1333 *tag++ = osCcxRmCap.Length;
1334 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1335 tag += osCcxRmCap.Length;
1336 }
1337
1338 if (beacon->BssCcxVerNumber >= 2) {
1339 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1340 struct octet_string osCcxVerNum;
1341 CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1342 osCcxVerNum.Octet = CcxVerNumBuf;
1343 osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1344 tag = skb_put(skb, cxvernum_ie_len);
1345 *tag++ = MFIE_TYPE_GENERIC;
1346 *tag++ = osCcxVerNum.Length;
1347 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1348 tag += osCcxVerNum.Length;
1349 }
1350 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1351 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1352 tag = skb_put(skb, ht_cap_len);
1353 *tag++ = MFIE_TYPE_HT_CAP;
1354 *tag++ = ht_cap_len - 2;
1355 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1356 tag += ht_cap_len - 2;
1357 }
1358 }
1359
1360 if (wpa_ie_len) {
1361 tag = skb_put(skb, ieee->wpa_ie_len);
1362 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
1363
1364 if (PMKCacheIdx >= 0) {
1365 tag = skb_put(skb, 18);
1366 *tag = 1;
1367 *(tag + 1) = 0;
1368 memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1369 16);
1370 }
1371 }
1372 if (wmm_info_len) {
1373 tag = skb_put(skb, wmm_info_len);
1374 rtllib_WMM_Info(ieee, &tag);
1375 }
1376
1377 if (wps_ie_len && ieee->wps_ie) {
1378 tag = skb_put(skb, wps_ie_len);
1379 memcpy(tag, ieee->wps_ie, wps_ie_len);
1380 }
1381
1382 tag = skb_put(skb, turbo_info_len);
1383 if (turbo_info_len)
1384 rtllib_TURBO_Info(ieee, &tag);
1385
1386 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1387 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1388 tag = skb_put(skb, ht_cap_len);
1389 *tag++ = MFIE_TYPE_GENERIC;
1390 *tag++ = ht_cap_len - 2;
1391 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1392 tag += ht_cap_len - 2;
1393 }
1394
1395 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1396 tag = skb_put(skb, realtek_ie_len);
1397 *tag++ = MFIE_TYPE_GENERIC;
1398 *tag++ = realtek_ie_len - 2;
1399 memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1400 }
1401 }
1402
1403 kfree(ieee->assocreq_ies);
1404 ieee->assocreq_ies = NULL;
1405 ies = &(hdr->info_element[0].id);
1406 ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1407 ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
1408 if (ieee->assocreq_ies)
1409 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
1410 else {
1411 printk(KERN_INFO "%s()Warning: can't alloc memory for assocreq"
1412 "_ies\n", __func__);
1413 ieee->assocreq_ies_len = 0;
1414 }
1415 return skb;
1416 }
1417
1418 void rtllib_associate_abort(struct rtllib_device *ieee)
1419 {
1420
1421 unsigned long flags;
1422 spin_lock_irqsave(&ieee->lock, flags);
1423
1424 ieee->associate_seq++;
1425
1426 /* don't scan, and avoid to have the RX path possibily
1427 * try again to associate. Even do not react to AUTH or
1428 * ASSOC response. Just wait for the retry wq to be scheduled.
1429 * Here we will check if there are good nets to associate
1430 * with, so we retry or just get back to NO_LINK and scanning
1431 */
1432 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1433 RTLLIB_DEBUG_MGMT("Authentication failed\n");
1434 ieee->softmac_stats.no_auth_rs++;
1435 } else {
1436 RTLLIB_DEBUG_MGMT("Association failed\n");
1437 ieee->softmac_stats.no_ass_rs++;
1438 }
1439
1440 ieee->state = RTLLIB_ASSOCIATING_RETRY;
1441
1442 queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq,
1443 RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1444
1445 spin_unlock_irqrestore(&ieee->lock, flags);
1446 }
1447
1448 static void rtllib_associate_abort_cb(unsigned long dev)
1449 {
1450 rtllib_associate_abort((struct rtllib_device *) dev);
1451 }
1452
1453 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 * daddr)
1454 {
1455 struct rtllib_network *beacon = &ieee->current_network;
1456 struct sk_buff *skb;
1457
1458 RTLLIB_DEBUG_MGMT("Stopping scan\n");
1459
1460 ieee->softmac_stats.tx_auth_rq++;
1461
1462 skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1463
1464 if (!skb)
1465 rtllib_associate_abort(ieee);
1466 else {
1467 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING ;
1468 RTLLIB_DEBUG_MGMT("Sending authentication request\n");
1469 softmac_mgmt_xmit(skb, ieee);
1470 if (!timer_pending(&ieee->associate_timer)) {
1471 ieee->associate_timer.expires = jiffies + (HZ / 2);
1472 add_timer(&ieee->associate_timer);
1473 }
1474 }
1475 }
1476
1477 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, int chlen)
1478 {
1479 u8 *c;
1480 struct sk_buff *skb;
1481 struct rtllib_network *beacon = &ieee->current_network;
1482
1483 ieee->associate_seq++;
1484 ieee->softmac_stats.tx_auth_rq++;
1485
1486 skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1487
1488 if (!skb)
1489 rtllib_associate_abort(ieee);
1490 else {
1491 c = skb_put(skb, chlen+2);
1492 *(c++) = MFIE_TYPE_CHALLENGE;
1493 *(c++) = chlen;
1494 memcpy(c, challenge, chlen);
1495
1496 RTLLIB_DEBUG_MGMT("Sending authentication challenge "
1497 "response\n");
1498
1499 rtllib_encrypt_fragment(ieee, skb,
1500 sizeof(struct rtllib_hdr_3addr));
1501
1502 softmac_mgmt_xmit(skb, ieee);
1503 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1504 }
1505 kfree(challenge);
1506 }
1507
1508 static void rtllib_associate_step2(struct rtllib_device *ieee)
1509 {
1510 struct sk_buff *skb;
1511 struct rtllib_network *beacon = &ieee->current_network;
1512
1513 del_timer_sync(&ieee->associate_timer);
1514
1515 RTLLIB_DEBUG_MGMT("Sending association request\n");
1516
1517 ieee->softmac_stats.tx_ass_rq++;
1518 skb = rtllib_association_req(beacon, ieee);
1519 if (!skb)
1520 rtllib_associate_abort(ieee);
1521 else {
1522 softmac_mgmt_xmit(skb, ieee);
1523 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1524 }
1525 }
1526
1527 #define CANCELLED 2
1528 static void rtllib_associate_complete_wq(void *data)
1529 {
1530 struct rtllib_device *ieee = (struct rtllib_device *)
1531 container_of_work_rsl(data,
1532 struct rtllib_device,
1533 associate_complete_wq);
1534 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1535 (&(ieee->PowerSaveControl));
1536 printk(KERN_INFO "Associated successfully\n");
1537 if (ieee->is_silent_reset == 0) {
1538 printk(KERN_INFO "normal associate\n");
1539 notify_wx_assoc_event(ieee);
1540 }
1541
1542 netif_carrier_on(ieee->dev);
1543 ieee->is_roaming = false;
1544 if (rtllib_is_54g(&ieee->current_network) &&
1545 (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1546 ieee->rate = 108;
1547 printk(KERN_INFO"Using G rates:%d\n", ieee->rate);
1548 } else {
1549 ieee->rate = 22;
1550 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1551 printk(KERN_INFO"Using B rates:%d\n", ieee->rate);
1552 }
1553 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1554 printk(KERN_INFO "Successfully associated, ht enabled\n");
1555 HTOnAssocRsp(ieee);
1556 } else {
1557 printk(KERN_INFO "Successfully associated, ht not "
1558 "enabled(%d, %d)\n",
1559 ieee->pHTInfo->bCurrentHTSupport,
1560 ieee->pHTInfo->bEnableHT);
1561 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1562 }
1563 ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1564 ieee->current_network.beacon_interval /
1565 500);
1566 if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1567 ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1568 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1569 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1570 }
1571 pPSC->LpsIdleCount = 0;
1572 ieee->link_change(ieee->dev);
1573
1574 if (ieee->is_silent_reset == 1) {
1575 printk(KERN_INFO "silent reset associate\n");
1576 ieee->is_silent_reset = 0;
1577 }
1578
1579 if (ieee->data_hard_resume)
1580 ieee->data_hard_resume(ieee->dev);
1581
1582 }
1583
1584 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1585 {
1586 }
1587
1588 static void rtllib_associate_complete(struct rtllib_device *ieee)
1589 {
1590 del_timer_sync(&ieee->associate_timer);
1591
1592 ieee->state = RTLLIB_LINKED;
1593 rtllib_sta_send_associnfo(ieee);
1594
1595 queue_work_rsl(ieee->wq, &ieee->associate_complete_wq);
1596 }
1597
1598 static void rtllib_associate_procedure_wq(void *data)
1599 {
1600 struct rtllib_device *ieee = container_of_dwork_rsl(data,
1601 struct rtllib_device,
1602 associate_procedure_wq);
1603 rtllib_stop_scan_syncro(ieee);
1604 if (ieee->rtllib_ips_leave != NULL)
1605 ieee->rtllib_ips_leave(ieee->dev);
1606 down(&ieee->wx_sem);
1607
1608 if (ieee->data_hard_stop)
1609 ieee->data_hard_stop(ieee->dev);
1610
1611 rtllib_stop_scan(ieee);
1612 RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1613 ieee->current_network.channel);
1614 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1615 if (ieee->eRFPowerState == eRfOff) {
1616 RT_TRACE(COMP_DBG, "=============>%s():Rf state is eRfOff,"
1617 " schedule ipsleave wq again,return\n", __func__);
1618 if (ieee->rtllib_ips_leave_wq != NULL)
1619 ieee->rtllib_ips_leave_wq(ieee->dev);
1620 up(&ieee->wx_sem);
1621 return;
1622 }
1623 ieee->associate_seq = 1;
1624
1625 rtllib_associate_step1(ieee, ieee->current_network.bssid);
1626
1627 up(&ieee->wx_sem);
1628 }
1629
1630 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1631 struct rtllib_network *net)
1632 {
1633 u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1634 int tmp_ssid_len = 0;
1635
1636 short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1637
1638 /* we are interested in new new only if we are not associated
1639 * and we are not associating / authenticating
1640 */
1641 if (ieee->state != RTLLIB_NOLINK)
1642 return;
1643
1644 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1645 WLAN_CAPABILITY_ESS))
1646 return;
1647
1648 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1649 WLAN_CAPABILITY_IBSS))
1650 return;
1651
1652 if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1653 (net->channel > ieee->ibss_maxjoin_chal))
1654 return;
1655 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1656 /* if the user specified the AP MAC, we need also the essid
1657 * This could be obtained by beacons or, if the network does not
1658 * broadcast it, it can be put manually.
1659 */
1660 apset = ieee->wap_set;
1661 ssidset = ieee->ssid_set;
1662 ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0');
1663 apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1664 ETH_ALEN) == 0);
1665 if (!ssidbroad) {
1666 ssidmatch = (ieee->current_network.ssid_len ==
1667 net->hidden_ssid_len) &&
1668 (!strncmp(ieee->current_network.ssid,
1669 net->hidden_ssid, net->hidden_ssid_len));
1670 if (net->hidden_ssid_len > 0) {
1671 strncpy(net->ssid, net->hidden_ssid,
1672 net->hidden_ssid_len);
1673 net->ssid_len = net->hidden_ssid_len;
1674 ssidbroad = 1;
1675 }
1676 } else
1677 ssidmatch =
1678 (ieee->current_network.ssid_len == net->ssid_len) &&
1679 (!strncmp(ieee->current_network.ssid, net->ssid,
1680 net->ssid_len));
1681
1682 /* if the user set the AP check if match.
1683 * if the network does not broadcast essid we check the
1684 * user supplied ANY essid
1685 * if the network does broadcast and the user does not set
1686 * essid it is OK
1687 * if the network does broadcast and the user did set essid
1688 * check if essid match
1689 * if the ap is not set, check that the user set the bssid
1690 * and the network does bradcast and that those two bssid match
1691 */
1692 if ((apset && apmatch &&
1693 ((ssidset && ssidbroad && ssidmatch) ||
1694 (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1695 (!apset && ssidset && ssidbroad && ssidmatch) ||
1696 (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1697 /* if the essid is hidden replace it with the
1698 * essid provided by the user.
1699 */
1700 if (!ssidbroad) {
1701 strncpy(tmp_ssid, ieee->current_network.ssid,
1702 IW_ESSID_MAX_SIZE);
1703 tmp_ssid_len = ieee->current_network.ssid_len;
1704 }
1705 memcpy(&ieee->current_network, net,
1706 sizeof(struct rtllib_network));
1707 if (!ssidbroad) {
1708 strncpy(ieee->current_network.ssid, tmp_ssid,
1709 IW_ESSID_MAX_SIZE);
1710 ieee->current_network.ssid_len = tmp_ssid_len;
1711 }
1712 printk(KERN_INFO"Linking with %s,channel:%d, qos:%d, "
1713 "myHT:%d, networkHT:%d, mode:%x cur_net.flags"
1714 ":0x%x\n", ieee->current_network.ssid,
1715 ieee->current_network.channel,
1716 ieee->current_network.qos_data.supported,
1717 ieee->pHTInfo->bEnableHT,
1718 ieee->current_network.bssht.bdSupportHT,
1719 ieee->current_network.mode,
1720 ieee->current_network.flags);
1721
1722 if ((rtllib_act_scanning(ieee, false)) &&
1723 !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1724 rtllib_stop_scan_syncro(ieee);
1725
1726 ieee->hwscan_ch_bk = ieee->current_network.channel;
1727 HTResetIOTSetting(ieee->pHTInfo);
1728 ieee->wmm_acm = 0;
1729 if (ieee->iw_mode == IW_MODE_INFRA) {
1730 /* Join the network for the first time */
1731 ieee->AsocRetryCount = 0;
1732 if ((ieee->current_network.qos_data.supported == 1) &&
1733 ieee->current_network.bssht.bdSupportHT)
1734 HTResetSelfAndSavePeerSetting(ieee,
1735 &(ieee->current_network));
1736 else
1737 ieee->pHTInfo->bCurrentHTSupport =
1738 false;
1739
1740 ieee->state = RTLLIB_ASSOCIATING;
1741 if (ieee->LedControlHandler != NULL)
1742 ieee->LedControlHandler(ieee->dev,
1743 LED_CTL_START_TO_LINK);
1744 queue_delayed_work_rsl(ieee->wq,
1745 &ieee->associate_procedure_wq, 0);
1746 } else {
1747 if (rtllib_is_54g(&ieee->current_network) &&
1748 (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1749 ieee->rate = 108;
1750 ieee->SetWirelessMode(ieee->dev, IEEE_G);
1751 printk(KERN_INFO"Using G rates\n");
1752 } else {
1753 ieee->rate = 22;
1754 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1755 printk(KERN_INFO"Using B rates\n");
1756 }
1757 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1758 ieee->state = RTLLIB_LINKED;
1759 }
1760 }
1761 }
1762 }
1763
1764 void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1765 {
1766 unsigned long flags;
1767 struct rtllib_network *target;
1768
1769 spin_lock_irqsave(&ieee->lock, flags);
1770
1771 list_for_each_entry(target, &ieee->network_list, list) {
1772
1773 /* if the state become different that NOLINK means
1774 * we had found what we are searching for
1775 */
1776
1777 if (ieee->state != RTLLIB_NOLINK)
1778 break;
1779
1780 if (ieee->scan_age == 0 || time_after(target->last_scanned +
1781 ieee->scan_age, jiffies))
1782 rtllib_softmac_new_net(ieee, target);
1783 }
1784 spin_unlock_irqrestore(&ieee->lock, flags);
1785 }
1786
1787 static inline u16 auth_parse(struct sk_buff *skb, u8** challenge, int *chlen)
1788 {
1789 struct rtllib_authentication *a;
1790 u8 *t;
1791 if (skb->len < (sizeof(struct rtllib_authentication) -
1792 sizeof(struct rtllib_info_element))) {
1793 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1794 return 0xcafe;
1795 }
1796 *challenge = NULL;
1797 a = (struct rtllib_authentication *) skb->data;
1798 if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1799 t = skb->data + sizeof(struct rtllib_authentication);
1800
1801 if (*(t++) == MFIE_TYPE_CHALLENGE) {
1802 *chlen = *(t++);
1803 *challenge = kmalloc(*chlen, GFP_ATOMIC);
1804 memcpy(*challenge, t, *chlen); /*TODO - check here*/
1805 }
1806 }
1807 return cpu_to_le16(a->status);
1808 }
1809
1810 static int auth_rq_parse(struct sk_buff *skb, u8 *dest)
1811 {
1812 struct rtllib_authentication *a;
1813
1814 if (skb->len < (sizeof(struct rtllib_authentication) -
1815 sizeof(struct rtllib_info_element))) {
1816 RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n",
1817 skb->len);
1818 return -1;
1819 }
1820 a = (struct rtllib_authentication *) skb->data;
1821
1822 memcpy(dest, a->header.addr2, ETH_ALEN);
1823
1824 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1825 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1826
1827 return WLAN_STATUS_SUCCESS;
1828 }
1829
1830 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1831 u8 *src)
1832 {
1833 u8 *tag;
1834 u8 *skbend;
1835 u8 *ssid = NULL;
1836 u8 ssidlen = 0;
1837 struct rtllib_hdr_3addr *header =
1838 (struct rtllib_hdr_3addr *) skb->data;
1839 bool bssid_match;
1840
1841 if (skb->len < sizeof(struct rtllib_hdr_3addr))
1842 return -1; /* corrupted */
1843
1844 bssid_match =
1845 (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) &&
1846 (memcmp(header->addr3, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0);
1847 if (bssid_match)
1848 return -1;
1849
1850 memcpy(src, header->addr2, ETH_ALEN);
1851
1852 skbend = (u8 *)skb->data + skb->len;
1853
1854 tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1855
1856 while (tag + 1 < skbend) {
1857 if (*tag == 0) {
1858 ssid = tag + 2;
1859 ssidlen = *(tag + 1);
1860 break;
1861 }
1862 tag++; /* point to the len field */
1863 tag = tag + *(tag); /* point to the last data byte of the tag */
1864 tag++; /* point to the next tag */
1865 }
1866
1867 if (ssidlen == 0)
1868 return 1;
1869
1870 if (!ssid)
1871 return 1; /* ssid not found in tagged param */
1872
1873 return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1874 }
1875
1876 static int assoc_rq_parse(struct sk_buff *skb, u8 *dest)
1877 {
1878 struct rtllib_assoc_request_frame *a;
1879
1880 if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1881 sizeof(struct rtllib_info_element))) {
1882
1883 RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len);
1884 return -1;
1885 }
1886
1887 a = (struct rtllib_assoc_request_frame *) skb->data;
1888
1889 memcpy(dest, a->header.addr2, ETH_ALEN);
1890
1891 return 0;
1892 }
1893
1894 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1895 int *aid)
1896 {
1897 struct rtllib_assoc_response_frame *response_head;
1898 u16 status_code;
1899
1900 if (skb->len < sizeof(struct rtllib_assoc_response_frame)) {
1901 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1902 return 0xcafe;
1903 }
1904
1905 response_head = (struct rtllib_assoc_response_frame *) skb->data;
1906 *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1907
1908 status_code = le16_to_cpu(response_head->status);
1909 if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1910 status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1911 ((ieee->mode == IEEE_G) &&
1912 (ieee->current_network.mode == IEEE_N_24G) &&
1913 (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1914 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1915 } else {
1916 ieee->AsocRetryCount = 0;
1917 }
1918
1919 return le16_to_cpu(response_head->status);
1920 }
1921
1922 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1923 {
1924 u8 dest[ETH_ALEN];
1925 ieee->softmac_stats.rx_probe_rq++;
1926 if (probe_rq_parse(ieee, skb, dest) > 0) {
1927 ieee->softmac_stats.tx_probe_rs++;
1928 rtllib_resp_to_probe(ieee, dest);
1929 }
1930 }
1931
1932 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1933 struct sk_buff *skb)
1934 {
1935 u8 dest[ETH_ALEN];
1936 int status;
1937 ieee->softmac_stats.rx_auth_rq++;
1938
1939 status = auth_rq_parse(skb, dest);
1940 if (status != -1)
1941 rtllib_resp_to_auth(ieee, status, dest);
1942 }
1943
1944 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1945 struct sk_buff *skb)
1946 {
1947
1948 u8 dest[ETH_ALEN];
1949
1950 ieee->softmac_stats.rx_ass_rq++;
1951 if (assoc_rq_parse(skb, dest) != -1)
1952 rtllib_resp_to_assoc_rq(ieee, dest);
1953
1954 printk(KERN_INFO"New client associated: %pM\n", dest);
1955 }
1956
1957 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1958 {
1959
1960 struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1961
1962 if (buf)
1963 softmac_ps_mgmt_xmit(buf, ieee);
1964 }
1965 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1966
1967 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1968 {
1969 struct sk_buff *buf = rtllib_pspoll_func(ieee);
1970
1971 if (buf)
1972 softmac_ps_mgmt_xmit(buf, ieee);
1973 }
1974
1975 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1976 {
1977 int timeout = ieee->ps_timeout;
1978 u8 dtim;
1979 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1980 (&(ieee->PowerSaveControl));
1981
1982 if (ieee->LPSDelayCnt) {
1983 ieee->LPSDelayCnt--;
1984 return 0;
1985 }
1986
1987 dtim = ieee->current_network.dtim_data;
1988 if (!(dtim & RTLLIB_DTIM_VALID))
1989 return 0;
1990 timeout = ieee->current_network.beacon_interval;
1991 ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1992 /* there's no need to nofity AP that I find you buffered
1993 * with broadcast packet */
1994 if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1995 return 2;
1996
1997 if (!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout)))
1998 return 0;
1999 if (!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout)))
2000 return 0;
2001 if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
2002 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
2003 return 0;
2004
2005 if (time) {
2006 if (ieee->bAwakePktSent == true) {
2007 pPSC->LPSAwakeIntvl = 1;
2008 } else {
2009 u8 MaxPeriod = 1;
2010
2011 if (pPSC->LPSAwakeIntvl == 0)
2012 pPSC->LPSAwakeIntvl = 1;
2013 if (pPSC->RegMaxLPSAwakeIntvl == 0)
2014 MaxPeriod = 1;
2015 else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2016 MaxPeriod = ieee->current_network.dtim_period;
2017 else
2018 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2019 pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2020 MaxPeriod) ? MaxPeriod :
2021 (pPSC->LPSAwakeIntvl + 1);
2022 }
2023 {
2024 u8 LPSAwakeIntvl_tmp = 0;
2025 u8 period = ieee->current_network.dtim_period;
2026 u8 count = ieee->current_network.tim.tim_count;
2027 if (count == 0) {
2028 if (pPSC->LPSAwakeIntvl > period)
2029 LPSAwakeIntvl_tmp = period +
2030 (pPSC->LPSAwakeIntvl -
2031 period) -
2032 ((pPSC->LPSAwakeIntvl-period) %
2033 period);
2034 else
2035 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2036
2037 } else {
2038 if (pPSC->LPSAwakeIntvl >
2039 ieee->current_network.tim.tim_count)
2040 LPSAwakeIntvl_tmp = count +
2041 (pPSC->LPSAwakeIntvl - count) -
2042 ((pPSC->LPSAwakeIntvl-count)%period);
2043 else
2044 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2045 }
2046
2047 *time = ieee->current_network.last_dtim_sta_time
2048 + MSECS(ieee->current_network.beacon_interval *
2049 LPSAwakeIntvl_tmp);
2050 }
2051 }
2052
2053 return 1;
2054
2055
2056 }
2057
2058 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2059 {
2060 u64 time;
2061 short sleep;
2062 unsigned long flags, flags2;
2063
2064 spin_lock_irqsave(&ieee->lock, flags);
2065
2066 if ((ieee->ps == RTLLIB_PS_DISABLED ||
2067 ieee->iw_mode != IW_MODE_INFRA ||
2068 ieee->state != RTLLIB_LINKED)) {
2069 RT_TRACE(COMP_DBG, "=====>%s(): no need to ps,wake up!! "
2070 "ieee->ps is %d, ieee->iw_mode is %d, ieee->state"
2071 " is %d\n", __func__, ieee->ps, ieee->iw_mode,
2072 ieee->state);
2073 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2074 rtllib_sta_wakeup(ieee, 1);
2075
2076 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2077 }
2078 sleep = rtllib_sta_ps_sleep(ieee, &time);
2079 /* 2 wake, 1 sleep, 0 do nothing */
2080 if (sleep == 0)
2081 goto out;
2082 if (sleep == 1) {
2083 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2084 ieee->enter_sleep_state(ieee->dev, time);
2085 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2086 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2087
2088 if (ieee->ps_is_queue_empty(ieee->dev)) {
2089 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2090 ieee->ack_tx_to_ieee = 1;
2091 rtllib_sta_ps_send_null_frame(ieee, 1);
2092 ieee->ps_time = time;
2093 }
2094 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2095
2096 }
2097
2098 ieee->bAwakePktSent = false;
2099
2100 } else if (sleep == 2) {
2101 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2102
2103 rtllib_sta_wakeup(ieee, 1);
2104
2105 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2106 }
2107
2108 out:
2109 spin_unlock_irqrestore(&ieee->lock, flags);
2110
2111 }
2112
2113 void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2114 {
2115 if (ieee->sta_sleep == LPS_IS_WAKE) {
2116 if (nl) {
2117 if (ieee->pHTInfo->IOTAction &
2118 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2119 ieee->ack_tx_to_ieee = 1;
2120 rtllib_sta_ps_send_null_frame(ieee, 0);
2121 } else {
2122 ieee->ack_tx_to_ieee = 1;
2123 rtllib_sta_ps_send_pspoll_frame(ieee);
2124 }
2125 }
2126 return;
2127
2128 }
2129
2130 if (ieee->sta_sleep == LPS_IS_SLEEP)
2131 ieee->sta_wake_up(ieee->dev);
2132 if (nl) {
2133 if (ieee->pHTInfo->IOTAction &
2134 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2135 ieee->ack_tx_to_ieee = 1;
2136 rtllib_sta_ps_send_null_frame(ieee, 0);
2137 } else {
2138 ieee->ack_tx_to_ieee = 1;
2139 ieee->polling = true;
2140 rtllib_sta_ps_send_pspoll_frame(ieee);
2141 }
2142
2143 } else {
2144 ieee->sta_sleep = LPS_IS_WAKE;
2145 ieee->polling = false;
2146 }
2147 }
2148
2149 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2150 {
2151 unsigned long flags, flags2;
2152
2153 spin_lock_irqsave(&ieee->lock, flags);
2154
2155 if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2156 /* Null frame with PS bit set */
2157 if (success) {
2158 ieee->sta_sleep = LPS_IS_SLEEP;
2159 ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2160 }
2161 /* if the card report not success we can't be sure the AP
2162 * has not RXed so we can't assume the AP believe us awake
2163 */
2164 } else {/* 21112005 - tx again null without PS bit if lost */
2165
2166 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2167 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2168 if (ieee->pHTInfo->IOTAction &
2169 HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2170 rtllib_sta_ps_send_null_frame(ieee, 0);
2171 else
2172 rtllib_sta_ps_send_pspoll_frame(ieee);
2173 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2174 }
2175 }
2176 spin_unlock_irqrestore(&ieee->lock, flags);
2177 }
2178 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2179
2180 static void rtllib_process_action(struct rtllib_device *ieee, struct sk_buff *skb)
2181 {
2182 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2183 u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2184 u8 category = 0;
2185
2186 if (act == NULL) {
2187 RTLLIB_DEBUG(RTLLIB_DL_ERR, "error to get payload of "
2188 "action frame\n");
2189 return;
2190 }
2191
2192 category = *act;
2193 act++;
2194 switch (category) {
2195 case ACT_CAT_BA:
2196 switch (*act) {
2197 case ACT_ADDBAREQ:
2198 rtllib_rx_ADDBAReq(ieee, skb);
2199 break;
2200 case ACT_ADDBARSP:
2201 rtllib_rx_ADDBARsp(ieee, skb);
2202 break;
2203 case ACT_DELBA:
2204 rtllib_rx_DELBA(ieee, skb);
2205 break;
2206 }
2207 break;
2208 default:
2209 break;
2210 }
2211 return;
2212 }
2213
2214 inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2215 struct rtllib_rx_stats *rx_stats)
2216 {
2217 u16 errcode;
2218 int aid;
2219 u8 *ies;
2220 struct rtllib_assoc_response_frame *assoc_resp;
2221 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2222
2223 RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
2224 WLAN_FC_GET_STYPE(header->frame_ctl));
2225
2226 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2227 ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2228 (ieee->iw_mode == IW_MODE_INFRA)) {
2229 errcode = assoc_parse(ieee, skb, &aid);
2230 if (0 == errcode) {
2231 struct rtllib_network *network =
2232 kzalloc(sizeof(struct rtllib_network),
2233 GFP_ATOMIC);
2234
2235 if (!network)
2236 return 1;
2237 ieee->state = RTLLIB_LINKED;
2238 ieee->assoc_id = aid;
2239 ieee->softmac_stats.rx_ass_ok++;
2240 /* station support qos */
2241 /* Let the register setting default with Legacy station */
2242 assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2243 if (ieee->current_network.qos_data.supported == 1) {
2244 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2245 rx_stats->len - sizeof(*assoc_resp),
2246 network, rx_stats)) {
2247 kfree(network);
2248 return 1;
2249 } else {
2250 memcpy(ieee->pHTInfo->PeerHTCapBuf,
2251 network->bssht.bdHTCapBuf,
2252 network->bssht.bdHTCapLen);
2253 memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2254 network->bssht.bdHTInfoBuf,
2255 network->bssht.bdHTInfoLen);
2256 }
2257 if (ieee->handle_assoc_response != NULL)
2258 ieee->handle_assoc_response(ieee->dev,
2259 (struct rtllib_assoc_response_frame *)header,
2260 network);
2261 }
2262 kfree(network);
2263
2264 kfree(ieee->assocresp_ies);
2265 ieee->assocresp_ies = NULL;
2266 ies = &(assoc_resp->info_element[0].id);
2267 ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2268 ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2269 GFP_ATOMIC);
2270 if (ieee->assocresp_ies)
2271 memcpy(ieee->assocresp_ies, ies,
2272 ieee->assocresp_ies_len);
2273 else {
2274 printk(KERN_INFO "%s()Warning: can't alloc "
2275 "memory for assocresp_ies\n", __func__);
2276 ieee->assocresp_ies_len = 0;
2277 }
2278 rtllib_associate_complete(ieee);
2279 } else {
2280 /* aid could not been allocated */
2281 ieee->softmac_stats.rx_ass_err++;
2282 printk(KERN_INFO "Association response status code 0x%x\n",
2283 errcode);
2284 RTLLIB_DEBUG_MGMT(
2285 "Association response status code 0x%x\n",
2286 errcode);
2287 if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2288 queue_delayed_work_rsl(ieee->wq,
2289 &ieee->associate_procedure_wq, 0);
2290 else
2291 rtllib_associate_abort(ieee);
2292 }
2293 }
2294 return 0;
2295 }
2296
2297 inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2298 struct rtllib_rx_stats *rx_stats)
2299 {
2300 u16 errcode;
2301 u8 *challenge;
2302 int chlen = 0;
2303 bool bSupportNmode = true, bHalfSupportNmode = false;
2304
2305 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2306 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2307 (ieee->iw_mode == IW_MODE_INFRA)) {
2308 RTLLIB_DEBUG_MGMT("Received authentication response");
2309
2310 errcode = auth_parse(skb, &challenge, &chlen);
2311 if (0 == errcode) {
2312 if (ieee->open_wep || !challenge) {
2313 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2314 ieee->softmac_stats.rx_auth_rs_ok++;
2315 if (!(ieee->pHTInfo->IOTAction &
2316 HT_IOT_ACT_PURE_N_MODE)) {
2317 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2318 if (IsHTHalfNmodeAPs(ieee)) {
2319 bSupportNmode = true;
2320 bHalfSupportNmode = true;
2321 } else {
2322 bSupportNmode = false;
2323 bHalfSupportNmode = false;
2324 }
2325 }
2326 }
2327 /* Dummy wirless mode setting to avoid
2328 * encryption issue */
2329 if (bSupportNmode) {
2330 ieee->SetWirelessMode(ieee->dev,
2331 ieee->current_network.mode);
2332 } else {
2333 /*TODO*/
2334 ieee->SetWirelessMode(ieee->dev,
2335 IEEE_G);
2336 }
2337
2338 if (ieee->current_network.mode ==
2339 IEEE_N_24G &&
2340 bHalfSupportNmode == true) {
2341 printk(KERN_INFO "======>enter "
2342 "half N mode\n");
2343 ieee->bHalfWirelessN24GMode =
2344 true;
2345 } else
2346 ieee->bHalfWirelessN24GMode =
2347 false;
2348
2349 rtllib_associate_step2(ieee);
2350 } else {
2351 rtllib_auth_challenge(ieee, challenge,
2352 chlen);
2353 }
2354 } else {
2355 ieee->softmac_stats.rx_auth_rs_err++;
2356 RTLLIB_DEBUG_MGMT("Authentication respose"
2357 " status code 0x%x", errcode);
2358
2359 printk(KERN_INFO "Authentication respose "
2360 "status code 0x%x", errcode);
2361 rtllib_associate_abort(ieee);
2362 }
2363
2364 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2365 rtllib_rx_auth_rq(ieee, skb);
2366 }
2367 }
2368 return 0;
2369 }
2370
2371 inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2372 {
2373 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2374
2375 if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2376 return 0;
2377
2378 /* FIXME for now repeat all the association procedure
2379 * both for disassociation and deauthentication
2380 */
2381 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2382 ieee->state == RTLLIB_LINKED &&
2383 (ieee->iw_mode == IW_MODE_INFRA)) {
2384 printk(KERN_INFO "==========>received disassoc/deauth(%x) "
2385 "frame, reason code:%x\n",
2386 WLAN_FC_GET_STYPE(header->frame_ctl),
2387 ((struct rtllib_disassoc *)skb->data)->reason);
2388 ieee->state = RTLLIB_ASSOCIATING;
2389 ieee->softmac_stats.reassoc++;
2390 ieee->is_roaming = true;
2391 ieee->LinkDetectInfo.bBusyTraffic = false;
2392 rtllib_disassociate(ieee);
2393 RemovePeerTS(ieee, header->addr2);
2394 if (ieee->LedControlHandler != NULL)
2395 ieee->LedControlHandler(ieee->dev,
2396 LED_CTL_START_TO_LINK);
2397
2398 if (!(ieee->rtllib_ap_sec_type(ieee) &
2399 (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2400 queue_delayed_work_rsl(ieee->wq,
2401 &ieee->associate_procedure_wq, 5);
2402 }
2403 return 0;
2404 }
2405
2406 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2407 struct sk_buff *skb,
2408 struct rtllib_rx_stats *rx_stats, u16 type,
2409 u16 stype)
2410 {
2411 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2412
2413 if (!ieee->proto_started)
2414 return 0;
2415
2416 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2417 case RTLLIB_STYPE_ASSOC_RESP:
2418 case RTLLIB_STYPE_REASSOC_RESP:
2419 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2420 return 1;
2421 break;
2422 case RTLLIB_STYPE_ASSOC_REQ:
2423 case RTLLIB_STYPE_REASSOC_REQ:
2424 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2425 ieee->iw_mode == IW_MODE_MASTER)
2426 rtllib_rx_assoc_rq(ieee, skb);
2427 break;
2428 case RTLLIB_STYPE_AUTH:
2429 rtllib_rx_auth(ieee, skb, rx_stats);
2430 break;
2431 case RTLLIB_STYPE_DISASSOC:
2432 case RTLLIB_STYPE_DEAUTH:
2433 rtllib_rx_deauth(ieee, skb);
2434 break;
2435 case RTLLIB_STYPE_MANAGE_ACT:
2436 rtllib_process_action(ieee, skb);
2437 break;
2438 default:
2439 return -1;
2440 break;
2441 }
2442 return 0;
2443 }
2444
2445 /* following are for a simplier TX queue management.
2446 * Instead of using netif_[stop/wake]_queue the driver
2447 * will use these two functions (plus a reset one), that
2448 * will internally use the kernel netif_* and takes
2449 * care of the ieee802.11 fragmentation.
2450 * So the driver receives a fragment per time and might
2451 * call the stop function when it wants to not
2452 * have enough room to TX an entire packet.
2453 * This might be useful if each fragment needs it's own
2454 * descriptor, thus just keep a total free memory > than
2455 * the max fragmentation threshold is not enough.. If the
2456 * ieee802.11 stack passed a TXB struct then you need
2457 * to keep N free descriptors where
2458 * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2459 * In this way you need just one and the 802.11 stack
2460 * will take care of buffering fragments and pass them to
2461 * to the driver later, when it wakes the queue.
2462 */
2463 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2464 {
2465
2466 unsigned int queue_index = txb->queue_index;
2467 unsigned long flags;
2468 int i;
2469 struct cb_desc *tcb_desc = NULL;
2470 unsigned long queue_len = 0;
2471
2472 spin_lock_irqsave(&ieee->lock, flags);
2473
2474 /* called with 2nd parm 0, no tx mgmt lock required */
2475 rtllib_sta_wakeup(ieee, 0);
2476
2477 /* update the tx status */
2478 tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2479 MAX_DEV_ADDR_SIZE);
2480 if (tcb_desc->bMulticast)
2481 ieee->stats.multicast++;
2482
2483 /* if xmit available, just xmit it immediately, else just insert it to
2484 * the wait queue */
2485 for (i = 0; i < txb->nr_frags; i++) {
2486 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2487 if ((queue_len != 0) ||\
2488 (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2489 (ieee->queue_stop)) {
2490 /* insert the skb packet to the wait queue */
2491 /* as for the completion function, it does not need
2492 * to check it any more.
2493 * */
2494 if (queue_len < 200)
2495 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2496 txb->fragments[i]);
2497 else
2498 kfree_skb(txb->fragments[i]);
2499 } else {
2500 ieee->softmac_data_hard_start_xmit(
2501 txb->fragments[i],
2502 ieee->dev, ieee->rate);
2503 }
2504 }
2505
2506 rtllib_txb_free(txb);
2507
2508 spin_unlock_irqrestore(&ieee->lock, flags);
2509
2510 }
2511
2512 /* called with ieee->lock acquired */
2513 static void rtllib_resume_tx(struct rtllib_device *ieee)
2514 {
2515 int i;
2516 for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags;
2517 i++) {
2518
2519 if (ieee->queue_stop) {
2520 ieee->tx_pending.frag = i;
2521 return;
2522 } else {
2523
2524 ieee->softmac_data_hard_start_xmit(
2525 ieee->tx_pending.txb->fragments[i],
2526 ieee->dev, ieee->rate);
2527 ieee->stats.tx_packets++;
2528 }
2529 }
2530
2531 rtllib_txb_free(ieee->tx_pending.txb);
2532 ieee->tx_pending.txb = NULL;
2533 }
2534
2535
2536 void rtllib_reset_queue(struct rtllib_device *ieee)
2537 {
2538 unsigned long flags;
2539
2540 spin_lock_irqsave(&ieee->lock, flags);
2541 init_mgmt_queue(ieee);
2542 if (ieee->tx_pending.txb) {
2543 rtllib_txb_free(ieee->tx_pending.txb);
2544 ieee->tx_pending.txb = NULL;
2545 }
2546 ieee->queue_stop = 0;
2547 spin_unlock_irqrestore(&ieee->lock, flags);
2548
2549 }
2550 EXPORT_SYMBOL(rtllib_reset_queue);
2551
2552 void rtllib_wake_queue(struct rtllib_device *ieee)
2553 {
2554
2555 unsigned long flags;
2556 struct sk_buff *skb;
2557 struct rtllib_hdr_3addr *header;
2558
2559 spin_lock_irqsave(&ieee->lock, flags);
2560 if (!ieee->queue_stop)
2561 goto exit;
2562
2563 ieee->queue_stop = 0;
2564
2565 if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) {
2566 while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) {
2567
2568 header = (struct rtllib_hdr_3addr *) skb->data;
2569
2570 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2571
2572 if (ieee->seq_ctrl[0] == 0xFFF)
2573 ieee->seq_ctrl[0] = 0;
2574 else
2575 ieee->seq_ctrl[0]++;
2576
2577 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
2578 ieee->basic_rate);
2579 }
2580 }
2581 if (!ieee->queue_stop && ieee->tx_pending.txb)
2582 rtllib_resume_tx(ieee);
2583
2584 if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) {
2585 ieee->softmac_stats.swtxawake++;
2586 netif_wake_queue(ieee->dev);
2587 }
2588
2589 exit:
2590 spin_unlock_irqrestore(&ieee->lock, flags);
2591 }
2592
2593
2594 void rtllib_stop_queue(struct rtllib_device *ieee)
2595 {
2596
2597 if (!netif_queue_stopped(ieee->dev)) {
2598 netif_stop_queue(ieee->dev);
2599 ieee->softmac_stats.swtxstop++;
2600 }
2601 ieee->queue_stop = 1;
2602
2603 }
2604
2605 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2606 {
2607 unsigned int i;
2608 for (i = 0; i < ieee->dev->num_tx_queues; i++)
2609 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2610
2611 netif_tx_stop_all_queues(ieee->dev);
2612 }
2613
2614 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2615 {
2616 netif_tx_wake_all_queues(ieee->dev);
2617 }
2618
2619 inline void rtllib_randomize_cell(struct rtllib_device *ieee)
2620 {
2621
2622 get_random_bytes(ieee->current_network.bssid, ETH_ALEN);
2623
2624 /* an IBSS cell address must have the two less significant
2625 * bits of the first byte = 2
2626 */
2627 ieee->current_network.bssid[0] &= ~0x01;
2628 ieee->current_network.bssid[0] |= 0x02;
2629 }
2630
2631 /* called in user context only */
2632 void rtllib_start_master_bss(struct rtllib_device *ieee)
2633 {
2634 ieee->assoc_id = 1;
2635
2636 if (ieee->current_network.ssid_len == 0) {
2637 strncpy(ieee->current_network.ssid,
2638 RTLLIB_DEFAULT_TX_ESSID,
2639 IW_ESSID_MAX_SIZE);
2640
2641 ieee->current_network.ssid_len =
2642 strlen(RTLLIB_DEFAULT_TX_ESSID);
2643 ieee->ssid_set = 1;
2644 }
2645
2646 memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN);
2647
2648 ieee->set_chan(ieee->dev, ieee->current_network.channel);
2649 ieee->state = RTLLIB_LINKED;
2650 ieee->link_change(ieee->dev);
2651 notify_wx_assoc_event(ieee);
2652
2653 if (ieee->data_hard_resume)
2654 ieee->data_hard_resume(ieee->dev);
2655
2656 netif_carrier_on(ieee->dev);
2657 }
2658
2659 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2660 {
2661 /* reset hardware status */
2662 if (ieee->raw_tx) {
2663 if (ieee->data_hard_resume)
2664 ieee->data_hard_resume(ieee->dev);
2665
2666 netif_carrier_on(ieee->dev);
2667 }
2668 }
2669
2670 static void rtllib_start_ibss_wq(void *data)
2671 {
2672 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2673 struct rtllib_device, start_ibss_wq);
2674 /* iwconfig mode ad-hoc will schedule this and return
2675 * on the other hand this will block further iwconfig SET
2676 * operations because of the wx_sem hold.
2677 * Anyway some most set operations set a flag to speed-up
2678 * (abort) this wq (when syncro scanning) before sleeping
2679 * on the semaphore
2680 */
2681 if (!ieee->proto_started) {
2682 printk(KERN_INFO "==========oh driver down return\n");
2683 return;
2684 }
2685 down(&ieee->wx_sem);
2686
2687 if (ieee->current_network.ssid_len == 0) {
2688 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2689 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2690 ieee->ssid_set = 1;
2691 }
2692
2693 ieee->state = RTLLIB_NOLINK;
2694 ieee->mode = IEEE_G;
2695 /* check if we have this cell in our network list */
2696 rtllib_softmac_check_all_nets(ieee);
2697
2698
2699 /* if not then the state is not linked. Maybe the user switched to
2700 * ad-hoc mode just after being in monitor mode, or just after
2701 * being very few time in managed mode (so the card have had no
2702 * time to scan all the chans..) or we have just run up the iface
2703 * after setting ad-hoc mode. So we have to give another try..
2704 * Here, in ibss mode, should be safe to do this without extra care
2705 * (in bss mode we had to make sure no-one tried to associate when
2706 * we had just checked the ieee->state and we was going to start the
2707 * scan) because in ibss mode the rtllib_new_net function, when
2708 * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2709 * so, at worst, we waste a bit of time to initiate an unneeded syncro
2710 * scan, that will stop at the first round because it sees the state
2711 * associated.
2712 */
2713 if (ieee->state == RTLLIB_NOLINK)
2714 rtllib_start_scan_syncro(ieee, 0);
2715
2716 /* the network definitively is not here.. create a new cell */
2717 if (ieee->state == RTLLIB_NOLINK) {
2718 printk(KERN_INFO "creating new IBSS cell\n");
2719 ieee->current_network.channel = ieee->IbssStartChnl;
2720 if (!ieee->wap_set)
2721 rtllib_randomize_cell(ieee);
2722
2723 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2724
2725 ieee->current_network.rates_len = 4;
2726
2727 ieee->current_network.rates[0] =
2728 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2729 ieee->current_network.rates[1] =
2730 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2731 ieee->current_network.rates[2] =
2732 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2733 ieee->current_network.rates[3] =
2734 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2735
2736 } else
2737 ieee->current_network.rates_len = 0;
2738
2739 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2740 ieee->current_network.rates_ex_len = 8;
2741
2742 ieee->current_network.rates_ex[0] =
2743 RTLLIB_OFDM_RATE_6MB;
2744 ieee->current_network.rates_ex[1] =
2745 RTLLIB_OFDM_RATE_9MB;
2746 ieee->current_network.rates_ex[2] =
2747 RTLLIB_OFDM_RATE_12MB;
2748 ieee->current_network.rates_ex[3] =
2749 RTLLIB_OFDM_RATE_18MB;
2750 ieee->current_network.rates_ex[4] =
2751 RTLLIB_OFDM_RATE_24MB;
2752 ieee->current_network.rates_ex[5] =
2753 RTLLIB_OFDM_RATE_36MB;
2754 ieee->current_network.rates_ex[6] =
2755 RTLLIB_OFDM_RATE_48MB;
2756 ieee->current_network.rates_ex[7] =
2757 RTLLIB_OFDM_RATE_54MB;
2758
2759 ieee->rate = 108;
2760 } else {
2761 ieee->current_network.rates_ex_len = 0;
2762 ieee->rate = 22;
2763 }
2764
2765 ieee->current_network.qos_data.supported = 0;
2766 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2767 ieee->current_network.mode = ieee->mode;
2768 ieee->current_network.atim_window = 0;
2769 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2770 }
2771
2772 printk(KERN_INFO "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2773 if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2774 HTUseDefaultSetting(ieee);
2775 else
2776 ieee->pHTInfo->bCurrentHTSupport = false;
2777
2778 ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2779 (u8 *)(&ieee->state));
2780
2781 ieee->state = RTLLIB_LINKED;
2782 ieee->link_change(ieee->dev);
2783
2784 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2785 if (ieee->LedControlHandler != NULL)
2786 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2787
2788 rtllib_start_send_beacons(ieee);
2789
2790 notify_wx_assoc_event(ieee);
2791
2792 if (ieee->data_hard_resume)
2793 ieee->data_hard_resume(ieee->dev);
2794
2795 netif_carrier_on(ieee->dev);
2796
2797 up(&ieee->wx_sem);
2798 }
2799
2800 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2801 {
2802 queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, MSECS(150));
2803 }
2804
2805 /* this is called only in user context, with wx_sem held */
2806 void rtllib_start_bss(struct rtllib_device *ieee)
2807 {
2808 unsigned long flags;
2809 if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2810 if (!ieee->bGlobalDomain)
2811 return;
2812 }
2813 /* check if we have already found the net we
2814 * are interested in (if any).
2815 * if not (we are disassociated and we are not
2816 * in associating / authenticating phase) start the background scanning.
2817 */
2818 rtllib_softmac_check_all_nets(ieee);
2819
2820 /* ensure no-one start an associating process (thus setting
2821 * the ieee->state to rtllib_ASSOCIATING) while we
2822 * have just checked it and we are going to enable scan.
2823 * The rtllib_new_net function is always called with
2824 * lock held (from both rtllib_softmac_check_all_nets and
2825 * the rx path), so we cannot be in the middle of such function
2826 */
2827 spin_lock_irqsave(&ieee->lock, flags);
2828
2829 if (ieee->state == RTLLIB_NOLINK)
2830 rtllib_start_scan(ieee);
2831 spin_unlock_irqrestore(&ieee->lock, flags);
2832 }
2833
2834 static void rtllib_link_change_wq(void *data)
2835 {
2836 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2837 struct rtllib_device, link_change_wq);
2838 ieee->link_change(ieee->dev);
2839 }
2840 /* called only in userspace context */
2841 void rtllib_disassociate(struct rtllib_device *ieee)
2842 {
2843 netif_carrier_off(ieee->dev);
2844 if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2845 rtllib_reset_queue(ieee);
2846
2847 if (ieee->data_hard_stop)
2848 ieee->data_hard_stop(ieee->dev);
2849 if (IS_DOT11D_ENABLE(ieee))
2850 Dot11d_Reset(ieee);
2851 ieee->state = RTLLIB_NOLINK;
2852 ieee->is_set_key = false;
2853 ieee->wap_set = 0;
2854
2855 queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0);
2856
2857 notify_wx_assoc_event(ieee);
2858 }
2859
2860 static void rtllib_associate_retry_wq(void *data)
2861 {
2862 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2863 struct rtllib_device, associate_retry_wq);
2864 unsigned long flags;
2865
2866 down(&ieee->wx_sem);
2867 if (!ieee->proto_started)
2868 goto exit;
2869
2870 if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2871 goto exit;
2872
2873 /* until we do not set the state to RTLLIB_NOLINK
2874 * there are no possibility to have someone else trying
2875 * to start an association procedure (we get here with
2876 * ieee->state = RTLLIB_ASSOCIATING).
2877 * When we set the state to RTLLIB_NOLINK it is possible
2878 * that the RX path run an attempt to associate, but
2879 * both rtllib_softmac_check_all_nets and the
2880 * RX path works with ieee->lock held so there are no
2881 * problems. If we are still disassociated then start a scan.
2882 * the lock here is necessary to ensure no one try to start
2883 * an association procedure when we have just checked the
2884 * state and we are going to start the scan.
2885 */
2886 ieee->beinretry = true;
2887 ieee->state = RTLLIB_NOLINK;
2888
2889 rtllib_softmac_check_all_nets(ieee);
2890
2891 spin_lock_irqsave(&ieee->lock, flags);
2892
2893 if (ieee->state == RTLLIB_NOLINK)
2894 rtllib_start_scan(ieee);
2895 spin_unlock_irqrestore(&ieee->lock, flags);
2896
2897 ieee->beinretry = false;
2898 exit:
2899 up(&ieee->wx_sem);
2900 }
2901
2902 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2903 {
2904 u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2905
2906 struct sk_buff *skb;
2907 struct rtllib_probe_response *b;
2908 skb = rtllib_probe_resp(ieee, broadcast_addr);
2909
2910 if (!skb)
2911 return NULL;
2912
2913 b = (struct rtllib_probe_response *) skb->data;
2914 b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2915
2916 return skb;
2917
2918 }
2919
2920 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2921 {
2922 struct sk_buff *skb;
2923 struct rtllib_probe_response *b;
2924
2925 skb = rtllib_get_beacon_(ieee);
2926 if (!skb)
2927 return NULL;
2928
2929 b = (struct rtllib_probe_response *) skb->data;
2930 b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2931
2932 if (ieee->seq_ctrl[0] == 0xFFF)
2933 ieee->seq_ctrl[0] = 0;
2934 else
2935 ieee->seq_ctrl[0]++;
2936
2937 return skb;
2938 }
2939 EXPORT_SYMBOL(rtllib_get_beacon);
2940
2941 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2942 u8 shutdown)
2943 {
2944 rtllib_stop_scan_syncro(ieee);
2945 down(&ieee->wx_sem);
2946 rtllib_stop_protocol(ieee, shutdown);
2947 up(&ieee->wx_sem);
2948 }
2949 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2950
2951
2952 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2953 {
2954 if (!ieee->proto_started)
2955 return;
2956
2957 if (shutdown) {
2958 ieee->proto_started = 0;
2959 ieee->proto_stoppping = 1;
2960 if (ieee->rtllib_ips_leave != NULL)
2961 ieee->rtllib_ips_leave(ieee->dev);
2962 }
2963
2964 rtllib_stop_send_beacons(ieee);
2965 del_timer_sync(&ieee->associate_timer);
2966 cancel_delayed_work(&ieee->associate_retry_wq);
2967 cancel_delayed_work(&ieee->start_ibss_wq);
2968 cancel_delayed_work(&ieee->link_change_wq);
2969 rtllib_stop_scan(ieee);
2970
2971 if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2972 ieee->state = RTLLIB_NOLINK;
2973
2974 if (ieee->state == RTLLIB_LINKED) {
2975 if (ieee->iw_mode == IW_MODE_INFRA)
2976 SendDisassociation(ieee, 1, deauth_lv_ss);
2977 rtllib_disassociate(ieee);
2978 }
2979
2980 if (shutdown) {
2981 RemoveAllTS(ieee);
2982 ieee->proto_stoppping = 0;
2983 }
2984 kfree(ieee->assocreq_ies);
2985 ieee->assocreq_ies = NULL;
2986 ieee->assocreq_ies_len = 0;
2987 kfree(ieee->assocresp_ies);
2988 ieee->assocresp_ies = NULL;
2989 ieee->assocresp_ies_len = 0;
2990 }
2991
2992 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2993 {
2994 down(&ieee->wx_sem);
2995 rtllib_start_protocol(ieee);
2996 up(&ieee->wx_sem);
2997 }
2998 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
2999
3000 void rtllib_start_protocol(struct rtllib_device *ieee)
3001 {
3002 short ch = 0;
3003 int i = 0;
3004
3005 rtllib_update_active_chan_map(ieee);
3006
3007 if (ieee->proto_started)
3008 return;
3009
3010 ieee->proto_started = 1;
3011
3012 if (ieee->current_network.channel == 0) {
3013 do {
3014 ch++;
3015 if (ch > MAX_CHANNEL_NUMBER)
3016 return; /* no channel found */
3017 } while (!ieee->active_channel_map[ch]);
3018 ieee->current_network.channel = ch;
3019 }
3020
3021 if (ieee->current_network.beacon_interval == 0)
3022 ieee->current_network.beacon_interval = 100;
3023
3024 for (i = 0; i < 17; i++) {
3025 ieee->last_rxseq_num[i] = -1;
3026 ieee->last_rxfrag_num[i] = -1;
3027 ieee->last_packet_time[i] = 0;
3028 }
3029
3030 if (ieee->UpdateBeaconInterruptHandler)
3031 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
3032
3033 ieee->wmm_acm = 0;
3034 /* if the user set the MAC of the ad-hoc cell and then
3035 * switch to managed mode, shall we make sure that association
3036 * attempts does not fail just because the user provide the essid
3037 * and the nic is still checking for the AP MAC ??
3038 */
3039 if (ieee->iw_mode == IW_MODE_INFRA) {
3040 rtllib_start_bss(ieee);
3041 } else if (ieee->iw_mode == IW_MODE_ADHOC) {
3042 if (ieee->UpdateBeaconInterruptHandler)
3043 ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
3044
3045 rtllib_start_ibss(ieee);
3046
3047 } else if (ieee->iw_mode == IW_MODE_MASTER) {
3048 rtllib_start_master_bss(ieee);
3049 } else if (ieee->iw_mode == IW_MODE_MONITOR) {
3050 rtllib_start_monitor_mode(ieee);
3051 }
3052 }
3053
3054 void rtllib_softmac_init(struct rtllib_device *ieee)
3055 {
3056 int i;
3057 memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
3058
3059 ieee->state = RTLLIB_NOLINK;
3060 for (i = 0; i < 5; i++)
3061 ieee->seq_ctrl[i] = 0;
3062 ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
3063 if (!ieee->pDot11dInfo)
3064 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for DOT11D\n");
3065 ieee->LinkDetectInfo.SlotIndex = 0;
3066 ieee->LinkDetectInfo.SlotNum = 2;
3067 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
3068 ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
3069 ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
3070 ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
3071 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
3072 ieee->bIsAggregateFrame = false;
3073 ieee->assoc_id = 0;
3074 ieee->queue_stop = 0;
3075 ieee->scanning_continue = 0;
3076 ieee->softmac_features = 0;
3077 ieee->wap_set = 0;
3078 ieee->ssid_set = 0;
3079 ieee->proto_started = 0;
3080 ieee->proto_stoppping = 0;
3081 ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
3082 ieee->rate = 22;
3083 ieee->ps = RTLLIB_PS_DISABLED;
3084 ieee->sta_sleep = LPS_IS_WAKE;
3085
3086 ieee->Regdot11HTOperationalRateSet[0] = 0xff;
3087 ieee->Regdot11HTOperationalRateSet[1] = 0xff;
3088 ieee->Regdot11HTOperationalRateSet[4] = 0x01;
3089
3090 ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3091 ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3092 ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3093
3094 ieee->FirstIe_InScan = false;
3095 ieee->actscanning = false;
3096 ieee->beinretry = false;
3097 ieee->is_set_key = false;
3098 init_mgmt_queue(ieee);
3099
3100 ieee->sta_edca_param[0] = 0x0000A403;
3101 ieee->sta_edca_param[1] = 0x0000A427;
3102 ieee->sta_edca_param[2] = 0x005E4342;
3103 ieee->sta_edca_param[3] = 0x002F3262;
3104 ieee->aggregation = true;
3105 ieee->enable_rx_imm_BA = 1;
3106 ieee->tx_pending.txb = NULL;
3107
3108 _setup_timer(&ieee->associate_timer,
3109 rtllib_associate_abort_cb,
3110 (unsigned long) ieee);
3111
3112 _setup_timer(&ieee->beacon_timer,
3113 rtllib_send_beacon_cb,
3114 (unsigned long) ieee);
3115
3116
3117 ieee->wq = create_workqueue(DRV_NAME);
3118
3119 INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3120 (void *)rtllib_link_change_wq, ieee);
3121 INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3122 (void *)rtllib_start_ibss_wq, ieee);
3123 INIT_WORK_RSL(&ieee->associate_complete_wq,
3124 (void *)rtllib_associate_complete_wq, ieee);
3125 INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3126 (void *)rtllib_associate_procedure_wq, ieee);
3127 INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3128 (void *)rtllib_softmac_scan_wq, ieee);
3129 INIT_DELAYED_WORK_RSL(&ieee->softmac_hint11d_wq,
3130 (void *)rtllib_softmac_hint11d_wq, ieee);
3131 INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3132 (void *)rtllib_associate_retry_wq, ieee);
3133 INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3134 ieee);
3135
3136 sema_init(&ieee->wx_sem, 1);
3137 sema_init(&ieee->scan_sem, 1);
3138 sema_init(&ieee->ips_sem, 1);
3139
3140 spin_lock_init(&ieee->mgmt_tx_lock);
3141 spin_lock_init(&ieee->beacon_lock);
3142
3143 tasklet_init(&ieee->ps_task,
3144 (void(*)(unsigned long)) rtllib_sta_ps,
3145 (unsigned long)ieee);
3146
3147 }
3148
3149 void rtllib_softmac_free(struct rtllib_device *ieee)
3150 {
3151 down(&ieee->wx_sem);
3152 kfree(ieee->pDot11dInfo);
3153 ieee->pDot11dInfo = NULL;
3154 del_timer_sync(&ieee->associate_timer);
3155
3156 cancel_delayed_work(&ieee->associate_retry_wq);
3157 destroy_workqueue(ieee->wq);
3158 up(&ieee->wx_sem);
3159 }
3160
3161 /********************************************************
3162 * Start of WPA code. *
3163 * this is stolen from the ipw2200 driver *
3164 ********************************************************/
3165
3166
3167 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3168 {
3169 /* This is called when wpa_supplicant loads and closes the driver
3170 * interface. */
3171 printk(KERN_INFO "%s WPA\n", value ? "enabling" : "disabling");
3172 ieee->wpa_enabled = value;
3173 memset(ieee->ap_mac_addr, 0, 6);
3174 return 0;
3175 }
3176
3177
3178 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3179 int wpa_ie_len)
3180 {
3181 /* make sure WPA is enabled */
3182 rtllib_wpa_enable(ieee, 1);
3183
3184 rtllib_disassociate(ieee);
3185 }
3186
3187
3188 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3189 {
3190
3191 int ret = 0;
3192
3193 switch (command) {
3194 case IEEE_MLME_STA_DEAUTH:
3195 break;
3196
3197 case IEEE_MLME_STA_DISASSOC:
3198 rtllib_disassociate(ieee);
3199 break;
3200
3201 default:
3202 printk(KERN_INFO "Unknown MLME request: %d\n", command);
3203 ret = -EOPNOTSUPP;
3204 }
3205
3206 return ret;
3207 }
3208
3209
3210 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3211 struct ieee_param *param, int plen)
3212 {
3213 u8 *buf;
3214
3215 if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3216 (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3217 return -EINVAL;
3218
3219 if (param->u.wpa_ie.len) {
3220 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
3221 GFP_KERNEL);
3222 if (buf == NULL)
3223 return -ENOMEM;
3224
3225 kfree(ieee->wpa_ie);
3226 ieee->wpa_ie = buf;
3227 ieee->wpa_ie_len = param->u.wpa_ie.len;
3228 } else {
3229 kfree(ieee->wpa_ie);
3230 ieee->wpa_ie = NULL;
3231 ieee->wpa_ie_len = 0;
3232 }
3233
3234 rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3235 return 0;
3236 }
3237
3238 #define AUTH_ALG_OPEN_SYSTEM 0x1
3239 #define AUTH_ALG_SHARED_KEY 0x2
3240 #define AUTH_ALG_LEAP 0x4
3241 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3242 {
3243
3244 struct rtllib_security sec = {
3245 .flags = SEC_AUTH_MODE,
3246 };
3247 int ret = 0;
3248
3249 if (value & AUTH_ALG_SHARED_KEY) {
3250 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3251 ieee->open_wep = 0;
3252 ieee->auth_mode = 1;
3253 } else if (value & AUTH_ALG_OPEN_SYSTEM) {
3254 sec.auth_mode = WLAN_AUTH_OPEN;
3255 ieee->open_wep = 1;
3256 ieee->auth_mode = 0;
3257 } else if (value & AUTH_ALG_LEAP) {
3258 sec.auth_mode = WLAN_AUTH_LEAP >> 6;
3259 ieee->open_wep = 1;
3260 ieee->auth_mode = 2;
3261 }
3262
3263
3264 if (ieee->set_security)
3265 ieee->set_security(ieee->dev, &sec);
3266
3267 return ret;
3268 }
3269
3270 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3271 {
3272 int ret = 0;
3273 unsigned long flags;
3274
3275 switch (name) {
3276 case IEEE_PARAM_WPA_ENABLED:
3277 ret = rtllib_wpa_enable(ieee, value);
3278 break;
3279
3280 case IEEE_PARAM_TKIP_COUNTERMEASURES:
3281 ieee->tkip_countermeasures = value;
3282 break;
3283
3284 case IEEE_PARAM_DROP_UNENCRYPTED:
3285 {
3286 /* HACK:
3287 *
3288 * wpa_supplicant calls set_wpa_enabled when the driver
3289 * is loaded and unloaded, regardless of if WPA is being
3290 * used. No other calls are made which can be used to
3291 * determine if encryption will be used or not prior to
3292 * association being expected. If encryption is not being
3293 * used, drop_unencrypted is set to false, else true -- we
3294 * can use this to determine if the CAP_PRIVACY_ON bit should
3295 * be set.
3296 */
3297 struct rtllib_security sec = {
3298 .flags = SEC_ENABLED,
3299 .enabled = value,
3300 };
3301 ieee->drop_unencrypted = value;
3302 /* We only change SEC_LEVEL for open mode. Others
3303 * are set by ipw_wpa_set_encryption.
3304 */
3305 if (!value) {
3306 sec.flags |= SEC_LEVEL;
3307 sec.level = SEC_LEVEL_0;
3308 } else {
3309 sec.flags |= SEC_LEVEL;
3310 sec.level = SEC_LEVEL_1;
3311 }
3312 if (ieee->set_security)
3313 ieee->set_security(ieee->dev, &sec);
3314 break;
3315 }
3316
3317 case IEEE_PARAM_PRIVACY_INVOKED:
3318 ieee->privacy_invoked = value;
3319 break;
3320
3321 case IEEE_PARAM_AUTH_ALGS:
3322 ret = rtllib_wpa_set_auth_algs(ieee, value);
3323 break;
3324
3325 case IEEE_PARAM_IEEE_802_1X:
3326 ieee->ieee802_1x = value;
3327 break;
3328 case IEEE_PARAM_WPAX_SELECT:
3329 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3330 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3331 break;
3332
3333 default:
3334 printk(KERN_INFO "Unknown WPA param: %d\n", name);
3335 ret = -EOPNOTSUPP;
3336 }
3337
3338 return ret;
3339 }
3340
3341 /* implementation borrowed from hostap driver */
3342 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3343 struct ieee_param *param, int param_len,
3344 u8 is_mesh)
3345 {
3346 int ret = 0;
3347 struct lib80211_crypto_ops *ops;
3348 struct lib80211_crypt_data **crypt;
3349
3350 struct rtllib_security sec = {
3351 .flags = 0,
3352 };
3353
3354 param->u.crypt.err = 0;
3355 param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3356
3357 if (param_len !=
3358 (int) ((char *) param->u.crypt.key - (char *) param) +
3359 param->u.crypt.key_len) {
3360 printk(KERN_INFO "Len mismatch %d, %d\n", param_len,
3361 param->u.crypt.key_len);
3362 return -EINVAL;
3363 }
3364 if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
3365 param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
3366 param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
3367 if (param->u.crypt.idx >= NUM_WEP_KEYS)
3368 return -EINVAL;
3369 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
3370 } else {
3371 return -EINVAL;
3372 }
3373
3374 if (strcmp(param->u.crypt.alg, "none") == 0) {
3375 if (crypt) {
3376 sec.enabled = 0;
3377 sec.level = SEC_LEVEL_0;
3378 sec.flags |= SEC_ENABLED | SEC_LEVEL;
3379 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3380 }
3381 goto done;
3382 }
3383 sec.enabled = 1;
3384 sec.flags |= SEC_ENABLED;
3385
3386 /* IPW HW cannot build TKIP MIC, host decryption still needed. */
3387 if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3388 strcmp(param->u.crypt.alg, "R-TKIP"))
3389 goto skip_host_crypt;
3390
3391 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3392 if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3393 request_module("rtllib_crypt_wep");
3394 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3395 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3396 request_module("rtllib_crypt_tkip");
3397 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3398 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3399 request_module("rtllib_crypt_ccmp");
3400 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3401 }
3402 if (ops == NULL) {
3403 printk(KERN_INFO "unknown crypto alg '%s'\n",
3404 param->u.crypt.alg);
3405 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3406 ret = -EINVAL;
3407 goto done;
3408 }
3409 if (*crypt == NULL || (*crypt)->ops != ops) {
3410 struct lib80211_crypt_data *new_crypt;
3411
3412 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3413
3414 new_crypt = (struct lib80211_crypt_data *)
3415 kmalloc(sizeof(*new_crypt), GFP_KERNEL);
3416 if (new_crypt == NULL) {
3417 ret = -ENOMEM;
3418 goto done;
3419 }
3420 memset(new_crypt, 0, sizeof(struct lib80211_crypt_data));
3421 new_crypt->ops = ops;
3422 if (new_crypt->ops)
3423 new_crypt->priv =
3424 new_crypt->ops->init(param->u.crypt.idx);
3425
3426 if (new_crypt->priv == NULL) {
3427 kfree(new_crypt);
3428 param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3429 ret = -EINVAL;
3430 goto done;
3431 }
3432
3433 *crypt = new_crypt;
3434 }
3435
3436 if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3437 (*crypt)->ops->set_key(param->u.crypt.key,
3438 param->u.crypt.key_len, param->u.crypt.seq,
3439 (*crypt)->priv) < 0) {
3440 printk(KERN_INFO "key setting failed\n");
3441 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3442 ret = -EINVAL;
3443 goto done;
3444 }
3445
3446 skip_host_crypt:
3447 if (param->u.crypt.set_tx) {
3448 ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
3449 sec.active_key = param->u.crypt.idx;
3450 sec.flags |= SEC_ACTIVE_KEY;
3451 } else
3452 sec.flags &= ~SEC_ACTIVE_KEY;
3453
3454 if (param->u.crypt.alg != NULL) {
3455 memcpy(sec.keys[param->u.crypt.idx],
3456 param->u.crypt.key,
3457 param->u.crypt.key_len);
3458 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3459 sec.flags |= (1 << param->u.crypt.idx);
3460
3461 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3462 sec.flags |= SEC_LEVEL;
3463 sec.level = SEC_LEVEL_1;
3464 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3465 sec.flags |= SEC_LEVEL;
3466 sec.level = SEC_LEVEL_2;
3467 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3468 sec.flags |= SEC_LEVEL;
3469 sec.level = SEC_LEVEL_3;
3470 }
3471 }
3472 done:
3473 if (ieee->set_security)
3474 ieee->set_security(ieee->dev, &sec);
3475
3476 /* Do not reset port if card is in Managed mode since resetting will
3477 * generate new IEEE 802.11 authentication which may end up in looping
3478 * with IEEE 802.1X. If your hardware requires a reset after WEP
3479 * configuration (for example... Prism2), implement the reset_port in
3480 * the callbacks structures used to initialize the 802.11 stack. */
3481 if (ieee->reset_on_keychange &&
3482 ieee->iw_mode != IW_MODE_INFRA &&
3483 ieee->reset_port &&
3484 ieee->reset_port(ieee->dev)) {
3485 printk(KERN_INFO "reset_port failed\n");
3486 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3487 return -EINVAL;
3488 }
3489
3490 return ret;
3491 }
3492
3493 inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon,
3494 struct rtllib_device *ieee, u16 asRsn)
3495 {
3496 struct sk_buff *skb;
3497 struct rtllib_disauth *disauth;
3498 int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3499
3500 skb = dev_alloc_skb(len);
3501 if (!skb)
3502 return NULL;
3503
3504 skb_reserve(skb, ieee->tx_headroom);
3505
3506 disauth = (struct rtllib_disauth *) skb_put(skb,
3507 sizeof(struct rtllib_disauth));
3508 disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3509 disauth->header.duration_id = 0;
3510
3511 memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN);
3512 memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3513 memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN);
3514
3515 disauth->reason = cpu_to_le16(asRsn);
3516 return skb;
3517 }
3518
3519 inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon,
3520 struct rtllib_device *ieee, u16 asRsn)
3521 {
3522 struct sk_buff *skb;
3523 struct rtllib_disassoc *disass;
3524 int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3525 skb = dev_alloc_skb(len);
3526
3527 if (!skb)
3528 return NULL;
3529
3530 skb_reserve(skb, ieee->tx_headroom);
3531
3532 disass = (struct rtllib_disassoc *) skb_put(skb,
3533 sizeof(struct rtllib_disassoc));
3534 disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3535 disass->header.duration_id = 0;
3536
3537 memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
3538 memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3539 memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);
3540
3541 disass->reason = cpu_to_le16(asRsn);
3542 return skb;
3543 }
3544
3545 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3546 {
3547 struct rtllib_network *beacon = &ieee->current_network;
3548 struct sk_buff *skb;
3549
3550 if (deauth)
3551 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3552 else
3553 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3554
3555 if (skb)
3556 softmac_mgmt_xmit(skb, ieee);
3557 }
3558
3559 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3560 {
3561 static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3562 static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3563 int wpa_ie_len = ieee->wpa_ie_len;
3564 struct lib80211_crypt_data *crypt;
3565 int encrypt;
3566
3567 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3568 encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3569 || (ieee->host_encrypt && crypt && crypt->ops &&
3570 (0 == strcmp(crypt->ops->name, "R-WEP")));
3571
3572 /* simply judge */
3573 if (encrypt && (wpa_ie_len == 0)) {
3574 return SEC_ALG_WEP;
3575 } else if ((wpa_ie_len != 0)) {
3576 if (((ieee->wpa_ie[0] == 0xdd) &&
3577 (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3578 ((ieee->wpa_ie[0] == 0x30) &&
3579 (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3580 return SEC_ALG_CCMP;
3581 else
3582 return SEC_ALG_TKIP;
3583 } else {
3584 return SEC_ALG_NONE;
3585 }
3586 }
3587
3588 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3589 u8 is_mesh)
3590 {
3591 struct ieee_param *param;
3592 int ret = 0;
3593
3594 down(&ieee->wx_sem);
3595
3596 if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3597 ret = -EINVAL;
3598 goto out;
3599 }
3600
3601 param = kmalloc(p->length, GFP_KERNEL);
3602 if (param == NULL) {
3603 ret = -ENOMEM;
3604 goto out;
3605 }
3606 if (copy_from_user(param, p->pointer, p->length)) {
3607 kfree(param);
3608 ret = -EFAULT;
3609 goto out;
3610 }
3611
3612 switch (param->cmd) {
3613 case IEEE_CMD_SET_WPA_PARAM:
3614 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3615 param->u.wpa_param.value);
3616 break;
3617
3618 case IEEE_CMD_SET_WPA_IE:
3619 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3620 break;
3621
3622 case IEEE_CMD_SET_ENCRYPTION:
3623 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3624 break;
3625
3626 case IEEE_CMD_MLME:
3627 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3628 param->u.mlme.reason_code);
3629 break;
3630
3631 default:
3632 printk(KERN_INFO "Unknown WPA supplicant request: %d\n",
3633 param->cmd);
3634 ret = -EOPNOTSUPP;
3635 break;
3636 }
3637
3638 if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3639 ret = -EFAULT;
3640
3641 kfree(param);
3642 out:
3643 up(&ieee->wx_sem);
3644
3645 return ret;
3646 }
3647 EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
3648
3649 void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3650 {
3651 u8 OpMode;
3652 u8 i;
3653 bool bFilterOutNonAssociatedBSSID = false;
3654
3655 rtllib->state = RTLLIB_NOLINK;
3656
3657 for (i = 0; i < 6; i++)
3658 rtllib->current_network.bssid[i] = 0x55;
3659
3660 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3661 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3662 rtllib->current_network.bssid);
3663 OpMode = RT_OP_MODE_NO_LINK;
3664 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3665 rtllib_stop_send_beacons(rtllib);
3666
3667 bFilterOutNonAssociatedBSSID = false;
3668 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3669 (u8 *)(&bFilterOutNonAssociatedBSSID));
3670 notify_wx_assoc_event(rtllib);
3671
3672 }
3673
3674 void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta,
3675 u8 asRsn)
3676 {
3677 u8 i;
3678 u8 OpMode;
3679
3680 RemovePeerTS(rtllib, asSta);
3681
3682 if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) {
3683 rtllib->state = RTLLIB_NOLINK;
3684
3685 for (i = 0; i < 6; i++)
3686 rtllib->current_network.bssid[i] = 0x22;
3687 OpMode = RT_OP_MODE_NO_LINK;
3688 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3689 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3690 (u8 *)(&OpMode));
3691 rtllib_disassociate(rtllib);
3692
3693 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3694 rtllib->current_network.bssid);
3695
3696 }
3697
3698 }
3699
3700 void
3701 rtllib_MgntDisconnectAP(
3702 struct rtllib_device *rtllib,
3703 u8 asRsn
3704 )
3705 {
3706 bool bFilterOutNonAssociatedBSSID = false;
3707
3708 bFilterOutNonAssociatedBSSID = false;
3709 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3710 (u8 *)(&bFilterOutNonAssociatedBSSID));
3711 rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3712 asRsn);
3713
3714 rtllib->state = RTLLIB_NOLINK;
3715 }
3716
3717 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3718 {
3719 if (rtllib->ps != RTLLIB_PS_DISABLED)
3720 rtllib->sta_wake_up(rtllib->dev);
3721
3722 if (rtllib->state == RTLLIB_LINKED) {
3723 if (rtllib->iw_mode == IW_MODE_ADHOC)
3724 rtllib_MgntDisconnectIBSS(rtllib);
3725 if (rtllib->iw_mode == IW_MODE_INFRA)
3726 rtllib_MgntDisconnectAP(rtllib, asRsn);
3727
3728 }
3729
3730 return true;
3731 }
3732 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3733
3734 void notify_wx_assoc_event(struct rtllib_device *ieee)
3735 {
3736 union iwreq_data wrqu;
3737
3738 if (ieee->cannot_notify)
3739 return;
3740
3741 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3742 if (ieee->state == RTLLIB_LINKED)
3743 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3744 ETH_ALEN);
3745 else {
3746
3747 printk(KERN_INFO "%s(): Tell user space disconnected\n",
3748 __func__);
3749 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
3750 }
3751 wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3752 }
3753 EXPORT_SYMBOL(notify_wx_assoc_event);
Linux kernel - Deliverables
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