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staging: rtl8192e: Fix various problems noted by smatch
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / staging / rtl8192e / rtllib_softmac.c
blobb5086850f0dee4ac5c05bccc7798013b0ff19e1f
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 #include "rtl_core.h"
19
20 #include <linux/random.h>
21 #include <linux/delay.h>
22 #include <linux/version.h>
23 #include <linux/uaccess.h>
24 #include "dot11d.h"
25
26 short rtllib_is_54g(struct rtllib_network *net)
27 {
28 return (net->rates_ex_len > 0) || (net->rates_len > 4);
29 }
30
31 short rtllib_is_shortslot(struct rtllib_network net)
32 {
33 return net.capability & WLAN_CAPABILITY_SHORT_SLOT_TIME;
34 }
35
36 /* returns the total length needed for pleacing the RATE MFIE
37 * tag and the EXTENDED RATE MFIE tag if needed.
38 * It encludes two bytes per tag for the tag itself and its len
39 */
40 static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
41 {
42 unsigned int rate_len = 0;
43
44 if (ieee->modulation & RTLLIB_CCK_MODULATION)
45 rate_len = RTLLIB_CCK_RATE_LEN + 2;
46
47 if (ieee->modulation & RTLLIB_OFDM_MODULATION)
48
49 rate_len += RTLLIB_OFDM_RATE_LEN + 2;
50
51 return rate_len;
52 }
53
54 /* pleace the MFIE rate, tag to the memory (double) poined.
55 * Then it updates the pointer so that
56 * it points after the new MFIE tag added.
57 */
58 static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
59 {
60 u8 *tag = *tag_p;
61
62 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
63 *tag++ = MFIE_TYPE_RATES;
64 *tag++ = 4;
65 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
66 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
67 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
68 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
69 }
70
71 /* We may add an option for custom rates that specific HW
72 * might support */
73 *tag_p = tag;
74 }
75
76 static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p)
77 {
78 u8 *tag = *tag_p;
79
80 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
81 *tag++ = MFIE_TYPE_RATES_EX;
82 *tag++ = 8;
83 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB;
84 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB;
85 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB;
86 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB;
87 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB;
88 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB;
89 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB;
90 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB;
91 }
92 /* We may add an option for custom rates that specific HW might
93 * support */
94 *tag_p = tag;
95 }
96
97 static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
98 {
99 u8 *tag = *tag_p;
100
101 *tag++ = MFIE_TYPE_GENERIC;
102 *tag++ = 7;
103 *tag++ = 0x00;
104 *tag++ = 0x50;
105 *tag++ = 0xf2;
106 *tag++ = 0x02;
107 *tag++ = 0x00;
108 *tag++ = 0x01;
109 *tag++ = MAX_SP_Len;
110 *tag_p = tag;
111 }
112
113 void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
114 {
115 u8 *tag = *tag_p;
116
117 *tag++ = MFIE_TYPE_GENERIC;
118 *tag++ = 7;
119 *tag++ = 0x00;
120 *tag++ = 0xe0;
121 *tag++ = 0x4c;
122 *tag++ = 0x01;
123 *tag++ = 0x02;
124 *tag++ = 0x11;
125 *tag++ = 0x00;
126
127 *tag_p = tag;
128 printk(KERN_ALERT "This is enable turbo mode IE process\n");
129 }
130
131 static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
132 {
133 int nh;
134 nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
135
136 /*
137 * if the queue is full but we have newer frames then
138 * just overwrites the oldest.
139 *
140 * if (nh == ieee->mgmt_queue_tail)
141 * return -1;
142 */
143 ieee->mgmt_queue_head = nh;
144 ieee->mgmt_queue_ring[nh] = skb;
145
146 }
147
148 static struct sk_buff *dequeue_mgmt(struct rtllib_device *ieee)
149 {
150 struct sk_buff *ret;
151
152 if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head)
153 return NULL;
154
155 ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail];
156
157 ieee->mgmt_queue_tail =
158 (ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM;
159
160 return ret;
161 }
162
163 static void init_mgmt_queue(struct rtllib_device *ieee)
164 {
165 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
166 }
167
168
169 u8
170 MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
171 {
172 u16 i;
173 u8 QueryRate = 0;
174 u8 BasicRate;
175
176
177 for (i = 0; i < ieee->current_network.rates_len; i++) {
178 BasicRate = ieee->current_network.rates[i]&0x7F;
179 if (!rtllib_is_cck_rate(BasicRate)) {
180 if (QueryRate == 0) {
181 QueryRate = BasicRate;
182 } else {
183 if (BasicRate < QueryRate)
184 QueryRate = BasicRate;
185 }
186 }
187 }
188
189 if (QueryRate == 0) {
190 QueryRate = 12;
191 printk(KERN_INFO "No BasicRate found!!\n");
192 }
193 return QueryRate;
194 }
195
196 u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
197 {
198 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
199 u8 rate;
200
201 if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
202 rate = 0x0c;
203 else
204 rate = ieee->basic_rate & 0x7f;
205
206 if (rate == 0) {
207 if (ieee->mode == IEEE_A ||
208 ieee->mode == IEEE_N_5G ||
209 (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
210 rate = 0x0c;
211 else
212 rate = 0x02;
213 }
214
215 return rate;
216 }
217
218 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
219 {
220 unsigned long flags;
221 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
222 struct rtllib_hdr_3addr *header =
223 (struct rtllib_hdr_3addr *) skb->data;
224
225 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
226 spin_lock_irqsave(&ieee->lock, flags);
227
228 /* called with 2nd param 0, no mgmt lock required */
229 rtllib_sta_wakeup(ieee, 0);
230
231 if (header->frame_ctl == RTLLIB_STYPE_BEACON)
232 tcb_desc->queue_index = BEACON_QUEUE;
233 else
234 tcb_desc->queue_index = MGNT_QUEUE;
235
236 if (ieee->disable_mgnt_queue)
237 tcb_desc->queue_index = HIGH_QUEUE;
238
239 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
240 tcb_desc->RATRIndex = 7;
241 tcb_desc->bTxDisableRateFallBack = 1;
242 tcb_desc->bTxUseDriverAssingedRate = 1;
243 if (single) {
244 if (ieee->queue_stop) {
245 enqueue_mgmt(ieee, skb);
246 } else {
247 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
248
249 if (ieee->seq_ctrl[0] == 0xFFF)
250 ieee->seq_ctrl[0] = 0;
251 else
252 ieee->seq_ctrl[0]++;
253
254 /* avoid watchdog triggers */
255 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
256 ieee->basic_rate);
257 }
258
259 spin_unlock_irqrestore(&ieee->lock, flags);
260 } else {
261 spin_unlock_irqrestore(&ieee->lock, flags);
262 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
263
264 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
265
266 if (ieee->seq_ctrl[0] == 0xFFF)
267 ieee->seq_ctrl[0] = 0;
268 else
269 ieee->seq_ctrl[0]++;
270
271 /* check wether the managed packet queued greater than 5 */
272 if (!ieee->check_nic_enough_desc(ieee->dev, tcb_desc->queue_index) ||
273 (skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) != 0) ||
274 (ieee->queue_stop)) {
275 /* insert the skb packet to the management queue */
276 /* as for the completion function, it does not need
277 * to check it any more.
278 * */
279 printk(KERN_INFO "%s():insert to waitqueue, queue_index"
280 ":%d!\n", __func__, tcb_desc->queue_index);
281 skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
282 skb);
283 } else {
284 ieee->softmac_hard_start_xmit(skb, ieee->dev);
285 }
286 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
287 }
288 }
289
290 inline void softmac_ps_mgmt_xmit(struct sk_buff *skb,
291 struct rtllib_device *ieee)
292 {
293 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
294 struct rtllib_hdr_3addr *header =
295 (struct rtllib_hdr_3addr *) skb->data;
296 u16 fc, type, stype;
297 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
298
299 fc = header->frame_ctl;
300 type = WLAN_FC_GET_TYPE(fc);
301 stype = WLAN_FC_GET_STYPE(fc);
302
303
304 if (stype != RTLLIB_STYPE_PSPOLL)
305 tcb_desc->queue_index = MGNT_QUEUE;
306 else
307 tcb_desc->queue_index = HIGH_QUEUE;
308
309 if (ieee->disable_mgnt_queue)
310 tcb_desc->queue_index = HIGH_QUEUE;
311
312
313 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
314 tcb_desc->RATRIndex = 7;
315 tcb_desc->bTxDisableRateFallBack = 1;
316 tcb_desc->bTxUseDriverAssingedRate = 1;
317 if (single) {
318 if (type != RTLLIB_FTYPE_CTL) {
319 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
320
321 if (ieee->seq_ctrl[0] == 0xFFF)
322 ieee->seq_ctrl[0] = 0;
323 else
324 ieee->seq_ctrl[0]++;
325
326 }
327 /* avoid watchdog triggers */
328 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
329 ieee->basic_rate);
330
331 } else {
332 if (type != RTLLIB_FTYPE_CTL) {
333 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
334
335 if (ieee->seq_ctrl[0] == 0xFFF)
336 ieee->seq_ctrl[0] = 0;
337 else
338 ieee->seq_ctrl[0]++;
339 }
340 ieee->softmac_hard_start_xmit(skb, ieee->dev);
341
342 }
343 }
344
345 inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
346 {
347 unsigned int len, rate_len;
348 u8 *tag;
349 struct sk_buff *skb;
350 struct rtllib_probe_request *req;
351
352 len = ieee->current_network.ssid_len;
353
354 rate_len = rtllib_MFIE_rate_len(ieee);
355
356 skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
357 2 + len + rate_len + ieee->tx_headroom);
358
359 if (!skb)
360 return NULL;
361
362 skb_reserve(skb, ieee->tx_headroom);
363
364 req = (struct rtllib_probe_request *) skb_put(skb,
365 sizeof(struct rtllib_probe_request));
366 req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
367 req->header.duration_id = 0;
368
369 memset(req->header.addr1, 0xff, ETH_ALEN);
370 memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
371 memset(req->header.addr3, 0xff, ETH_ALEN);
372
373 tag = (u8 *) skb_put(skb, len + 2 + rate_len);
374
375 *tag++ = MFIE_TYPE_SSID;
376 *tag++ = len;
377 memcpy(tag, ieee->current_network.ssid, len);
378 tag += len;
379
380 rtllib_MFIE_Brate(ieee, &tag);
381 rtllib_MFIE_Grate(ieee, &tag);
382
383 return skb;
384 }
385
386 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
387
388 static void rtllib_send_beacon(struct rtllib_device *ieee)
389 {
390 struct sk_buff *skb;
391 if (!ieee->ieee_up)
392 return;
393 skb = rtllib_get_beacon_(ieee);
394
395 if (skb) {
396 softmac_mgmt_xmit(skb, ieee);
397 ieee->softmac_stats.tx_beacons++;
398 }
399
400 if (ieee->beacon_txing && ieee->ieee_up)
401 mod_timer(&ieee->beacon_timer, jiffies +
402 (MSECS(ieee->current_network.beacon_interval - 5)));
403 }
404
405
406 static void rtllib_send_beacon_cb(unsigned long _ieee)
407 {
408 struct rtllib_device *ieee =
409 (struct rtllib_device *) _ieee;
410 unsigned long flags;
411
412 spin_lock_irqsave(&ieee->beacon_lock, flags);
413 rtllib_send_beacon(ieee);
414 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
415 }
416
417 /*
418 * Description:
419 * Enable network monitor mode, all rx packets will be received.
420 */
421 void rtllib_EnableNetMonitorMode(struct net_device *dev,
422 bool bInitState)
423 {
424 struct rtllib_device *ieee = netdev_priv_rsl(dev);
425
426 printk(KERN_INFO "========>Enter Monitor Mode\n");
427
428 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
429 }
430
431
432 /*
433 * Description:
434 * Disable network network monitor mode, only packets destinated to
435 * us will be received.
436 */
437 void rtllib_DisableNetMonitorMode(struct net_device *dev,
438 bool bInitState)
439 {
440 struct rtllib_device *ieee = netdev_priv_rsl(dev);
441
442 printk(KERN_INFO "========>Exit Monitor Mode\n");
443
444 ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
445 }
446
447
448 /*
449 * Description:
450 * This enables the specialized promiscuous mode required by Intel.
451 * In this mode, Intel intends to hear traffics from/to other STAs in the
452 * same BSS. Therefore we don't have to disable checking BSSID and we only need
453 * to allow all dest. BUT: if we enable checking BSSID then we can't recv
454 * packets from other STA.
455 */
456 void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
457 bool bInitState)
458 {
459 bool bFilterOutNonAssociatedBSSID = false;
460
461 struct rtllib_device *ieee = netdev_priv_rsl(dev);
462
463 printk(KERN_INFO "========>Enter Intel Promiscuous Mode\n");
464
465 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
466 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
467 (u8 *)&bFilterOutNonAssociatedBSSID);
468
469 ieee->bNetPromiscuousMode = true;
470 }
471
472
473 /*
474 * Description:
475 * This disables the specialized promiscuous mode required by Intel.
476 * See MgntEnableIntelPromiscuousMode for detail.
477 */
478 void rtllib_DisableIntelPromiscuousMode(struct net_device *dev,
479 bool bInitState)
480 {
481 bool bFilterOutNonAssociatedBSSID = true;
482
483 struct rtllib_device *ieee = netdev_priv_rsl(dev);
484
485 printk(KERN_INFO "========>Exit Intel Promiscuous Mode\n");
486
487 ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
488 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
489 (u8 *)&bFilterOutNonAssociatedBSSID);
490
491 ieee->bNetPromiscuousMode = false;
492 }
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 witch 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
689
690 void rtllib_start_send_beacons(struct rtllib_device *ieee)
691 {
692 if (ieee->start_send_beacons)
693 ieee->start_send_beacons(ieee->dev);
694 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
695 rtllib_beacons_start(ieee);
696 }
697
698
699 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
700 {
701 down(&ieee->scan_sem);
702 ieee->scan_watch_dog = 0;
703 if (ieee->scanning_continue == 1) {
704 ieee->scanning_continue = 0;
705 ieee->actscanning = 0;
706
707 cancel_delayed_work(&ieee->softmac_scan_wq);
708 }
709
710 up(&ieee->scan_sem);
711 }
712
713 void rtllib_stop_scan(struct rtllib_device *ieee)
714 {
715 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
716 rtllib_softmac_stop_scan(ieee);
717 } else {
718 if (ieee->rtllib_stop_hw_scan)
719 ieee->rtllib_stop_hw_scan(ieee->dev);
720 }
721 }
722
723 void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
724 {
725 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
726 ieee->sync_scan_hurryup = 1;
727 } else {
728 if (ieee->rtllib_stop_hw_scan)
729 ieee->rtllib_stop_hw_scan(ieee->dev);
730 }
731 }
732
733 bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
734 {
735 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
736 if (sync_scan)
737 return ieee->be_scan_inprogress;
738 else
739 return ieee->actscanning || ieee->be_scan_inprogress;
740 } else {
741 return test_bit(STATUS_SCANNING, &ieee->status);
742 }
743 }
744
745 /* called with ieee->lock held */
746 static void rtllib_start_scan(struct rtllib_device *ieee)
747 {
748 RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
749 if (ieee->rtllib_ips_leave_wq != NULL)
750 ieee->rtllib_ips_leave_wq(ieee->dev);
751
752 if (IS_DOT11D_ENABLE(ieee)) {
753 if (IS_COUNTRY_IE_VALID(ieee))
754 RESET_CIE_WATCHDOG(ieee);
755 }
756 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
757 if (ieee->scanning_continue == 0) {
758 ieee->actscanning = true;
759 ieee->scanning_continue = 1;
760 queue_delayed_work_rsl(ieee->wq,
761 &ieee->softmac_scan_wq, 0);
762 }
763 } else {
764 if (ieee->rtllib_start_hw_scan)
765 ieee->rtllib_start_hw_scan(ieee->dev);
766 }
767 }
768
769 /* called with wx_sem held */
770 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
771 {
772 if (IS_DOT11D_ENABLE(ieee)) {
773 if (IS_COUNTRY_IE_VALID(ieee))
774 RESET_CIE_WATCHDOG(ieee);
775 }
776 ieee->sync_scan_hurryup = 0;
777 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
778 rtllib_softmac_scan_syncro(ieee, is_mesh);
779 } else {
780 if (ieee->rtllib_start_hw_scan)
781 ieee->rtllib_start_hw_scan(ieee->dev);
782 }
783 }
784
785 inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon,
786 struct rtllib_device *ieee, int challengelen, u8 *daddr)
787 {
788 struct sk_buff *skb;
789 struct rtllib_authentication *auth;
790 int len = 0;
791 len = sizeof(struct rtllib_authentication) + challengelen +
792 ieee->tx_headroom + 4;
793 skb = dev_alloc_skb(len);
794
795 if (!skb)
796 return NULL;
797
798 skb_reserve(skb, ieee->tx_headroom);
799
800 auth = (struct rtllib_authentication *)
801 skb_put(skb, sizeof(struct rtllib_authentication));
802
803 auth->header.frame_ctl = RTLLIB_STYPE_AUTH;
804 if (challengelen)
805 auth->header.frame_ctl |= RTLLIB_FCTL_WEP;
806
807 auth->header.duration_id = 0x013a;
808 memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN);
809 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
810 memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN);
811 if (ieee->auth_mode == 0)
812 auth->algorithm = WLAN_AUTH_OPEN;
813 else if (ieee->auth_mode == 1)
814 auth->algorithm = WLAN_AUTH_SHARED_KEY;
815 else if (ieee->auth_mode == 2)
816 auth->algorithm = WLAN_AUTH_OPEN;
817 auth->transaction = cpu_to_le16(ieee->associate_seq);
818 ieee->associate_seq++;
819
820 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
821
822 return skb;
823 }
824
825 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, u8 *dest)
826 {
827 u8 *tag;
828 int beacon_size;
829 struct rtllib_probe_response *beacon_buf;
830 struct sk_buff *skb = NULL;
831 int encrypt;
832 int atim_len, erp_len;
833 struct rtllib_crypt_data *crypt;
834
835 char *ssid = ieee->current_network.ssid;
836 int ssid_len = ieee->current_network.ssid_len;
837 int rate_len = ieee->current_network.rates_len+2;
838 int rate_ex_len = ieee->current_network.rates_ex_len;
839 int wpa_ie_len = ieee->wpa_ie_len;
840 u8 erpinfo_content = 0;
841
842 u8 *tmp_ht_cap_buf = NULL;
843 u8 tmp_ht_cap_len = 0;
844 u8 *tmp_ht_info_buf = NULL;
845 u8 tmp_ht_info_len = 0;
846 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
847 u8 *tmp_generic_ie_buf = NULL;
848 u8 tmp_generic_ie_len = 0;
849
850 if (rate_ex_len > 0)
851 rate_ex_len += 2;
852
853 if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
854 atim_len = 4;
855 else
856 atim_len = 0;
857
858 if ((ieee->current_network.mode == IEEE_G) ||
859 (ieee->current_network.mode == IEEE_N_24G &&
860 ieee->pHTInfo->bCurSuppCCK)) {
861 erp_len = 3;
862 erpinfo_content = 0;
863 if (ieee->current_network.buseprotection)
864 erpinfo_content |= ERP_UseProtection;
865 } else
866 erp_len = 0;
867
868 crypt = ieee->crypt[ieee->tx_keyidx];
869 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
870 ((0 == strcmp(crypt->ops->name, "WEP") || wpa_ie_len));
871 if (ieee->pHTInfo->bCurrentHTSupport) {
872 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
873 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
874 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
875 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
876 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
877 &tmp_ht_cap_len, encrypt, false);
878 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
879 encrypt);
880
881 if (pHTInfo->bRegRT2RTAggregation) {
882 tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
883 tmp_generic_ie_len =
884 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
885 HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
886 &tmp_generic_ie_len);
887 }
888 }
889
890 beacon_size = sizeof(struct rtllib_probe_response)+2+
891 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
892 + wpa_ie_len + ieee->tx_headroom;
893 skb = dev_alloc_skb(beacon_size);
894 if (!skb)
895 return NULL;
896
897 skb_reserve(skb, ieee->tx_headroom);
898
899 beacon_buf = (struct rtllib_probe_response *) skb_put(skb,
900 (beacon_size - ieee->tx_headroom));
901 memcpy(beacon_buf->header.addr1, dest, ETH_ALEN);
902 memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
903 memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN);
904
905 beacon_buf->header.duration_id = 0;
906 beacon_buf->beacon_interval =
907 cpu_to_le16(ieee->current_network.beacon_interval);
908 beacon_buf->capability =
909 cpu_to_le16(ieee->current_network.capability &
910 WLAN_CAPABILITY_IBSS);
911 beacon_buf->capability |=
912 cpu_to_le16(ieee->current_network.capability &
913 WLAN_CAPABILITY_SHORT_PREAMBLE);
914
915 if (ieee->short_slot && (ieee->current_network.capability &
916 WLAN_CAPABILITY_SHORT_SLOT_TIME))
917 cpu_to_le16((beacon_buf->capability |=
918 WLAN_CAPABILITY_SHORT_SLOT_TIME));
919
920 crypt = ieee->crypt[ieee->tx_keyidx];
921 if (encrypt)
922 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
923
924
925 beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
926 beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
927 beacon_buf->info_element[0].len = ssid_len;
928
929 tag = (u8 *) beacon_buf->info_element[0].data;
930
931 memcpy(tag, ssid, ssid_len);
932
933 tag += ssid_len;
934
935 *(tag++) = MFIE_TYPE_RATES;
936 *(tag++) = rate_len-2;
937 memcpy(tag, ieee->current_network.rates, rate_len-2);
938 tag += rate_len-2;
939
940 *(tag++) = MFIE_TYPE_DS_SET;
941 *(tag++) = 1;
942 *(tag++) = ieee->current_network.channel;
943
944 if (atim_len) {
945 u16 val16;
946 *(tag++) = MFIE_TYPE_IBSS_SET;
947 *(tag++) = 2;
948 val16 = cpu_to_le16(ieee->current_network.atim_window);
949 memcpy((u8 *)tag, (u8 *)&val16, 2);
950 tag += 2;
951 }
952
953 if (erp_len) {
954 *(tag++) = MFIE_TYPE_ERP;
955 *(tag++) = 1;
956 *(tag++) = erpinfo_content;
957 }
958 if (rate_ex_len) {
959 *(tag++) = MFIE_TYPE_RATES_EX;
960 *(tag++) = rate_ex_len-2;
961 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
962 tag += rate_ex_len-2;
963 }
964
965 if (wpa_ie_len) {
966 if (ieee->iw_mode == IW_MODE_ADHOC)
967 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
968 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
969 tag += ieee->wpa_ie_len;
970 }
971 return skb;
972 }
973
974 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
975 {
976 struct sk_buff *skb;
977 u8 *tag;
978
979 struct rtllib_crypt_data *crypt;
980 struct rtllib_assoc_response_frame *assoc;
981 short encrypt;
982
983 unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
984 int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
985 ieee->tx_headroom;
986
987 skb = dev_alloc_skb(len);
988
989 if (!skb)
990 return NULL;
991
992 skb_reserve(skb, ieee->tx_headroom);
993
994 assoc = (struct rtllib_assoc_response_frame *)
995 skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
996
997 assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
998 memcpy(assoc->header.addr1, dest, ETH_ALEN);
999 memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1000 memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1001 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
1002 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
1003
1004
1005 if (ieee->short_slot)
1006 assoc->capability |=
1007 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1008
1009 if (ieee->host_encrypt)
1010 crypt = ieee->crypt[ieee->tx_keyidx];
1011 else
1012 crypt = NULL;
1013
1014 encrypt = (crypt && crypt->ops);
1015
1016 if (encrypt)
1017 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1018
1019 assoc->status = 0;
1020 assoc->aid = cpu_to_le16(ieee->assoc_id);
1021 if (ieee->assoc_id == 0x2007)
1022 ieee->assoc_id = 0;
1023 else
1024 ieee->assoc_id++;
1025
1026 tag = (u8 *) skb_put(skb, rate_len);
1027 rtllib_MFIE_Brate(ieee, &tag);
1028 rtllib_MFIE_Grate(ieee, &tag);
1029
1030 return skb;
1031 }
1032
1033 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1034 u8 *dest)
1035 {
1036 struct sk_buff *skb = NULL;
1037 struct rtllib_authentication *auth;
1038 int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1039 skb = dev_alloc_skb(len);
1040 if (!skb)
1041 return NULL;
1042
1043 skb->len = sizeof(struct rtllib_authentication);
1044
1045 skb_reserve(skb, ieee->tx_headroom);
1046
1047 auth = (struct rtllib_authentication *)
1048 skb_put(skb, sizeof(struct rtllib_authentication));
1049
1050 auth->status = cpu_to_le16(status);
1051 auth->transaction = cpu_to_le16(2);
1052 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1053
1054 memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1055 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1056 memcpy(auth->header.addr1, dest, ETH_ALEN);
1057 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1058 return skb;
1059
1060
1061 }
1062
1063 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1064 {
1065 struct sk_buff *skb;
1066 struct rtllib_hdr_3addr *hdr;
1067
1068 skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1069 if (!skb)
1070 return NULL;
1071
1072 skb_reserve(skb, ieee->tx_headroom);
1073
1074 hdr = (struct rtllib_hdr_3addr *)skb_put(skb,
1075 sizeof(struct rtllib_hdr_3addr));
1076
1077 memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN);
1078 memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN);
1079 memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN);
1080
1081 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1082 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1083 (pwr ? RTLLIB_FCTL_PM : 0));
1084
1085 return skb;
1086
1087
1088 }
1089
1090 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1091 {
1092 struct sk_buff *skb;
1093 struct rtllib_pspoll_hdr *hdr;
1094
1095 skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1096 if (!skb)
1097 return NULL;
1098
1099 skb_reserve(skb, ieee->tx_headroom);
1100
1101 hdr = (struct rtllib_pspoll_hdr *)skb_put(skb,
1102 sizeof(struct rtllib_pspoll_hdr));
1103
1104 memcpy(hdr->bssid, ieee->current_network.bssid, ETH_ALEN);
1105 memcpy(hdr->ta, ieee->dev->dev_addr, ETH_ALEN);
1106
1107 hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1108 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1109 RTLLIB_FCTL_PM);
1110
1111 return skb;
1112
1113 }
1114
1115 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1116 {
1117 struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1118
1119 if (buf)
1120 softmac_mgmt_xmit(buf, ieee);
1121 }
1122
1123
1124 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1125 {
1126 struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1127
1128 if (buf)
1129 softmac_mgmt_xmit(buf, ieee);
1130 }
1131
1132
1133 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1134 {
1135
1136 struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1137 if (buf)
1138 softmac_mgmt_xmit(buf, ieee);
1139 }
1140
1141
1142 inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1143 {
1144 int i = 0;
1145
1146 do {
1147 if ((ieee->PMKIDList[i].bUsed) &&
1148 (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1149 break;
1150 else
1151 i++;
1152 } while (i < NUM_PMKID_CACHE);
1153
1154 if (i == NUM_PMKID_CACHE)
1155 i = -1;
1156 return i;
1157 }
1158
1159 inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon,
1160 struct rtllib_device *ieee)
1161 {
1162 struct sk_buff *skb;
1163 struct rtllib_assoc_request_frame *hdr;
1164 u8 *tag, *ies;
1165 int i;
1166 u8 *ht_cap_buf = NULL;
1167 u8 ht_cap_len = 0;
1168 u8 *realtek_ie_buf = NULL;
1169 u8 realtek_ie_len = 0;
1170 int wpa_ie_len = ieee->wpa_ie_len;
1171 int wps_ie_len = ieee->wps_ie_len;
1172 unsigned int ckip_ie_len = 0;
1173 unsigned int ccxrm_ie_len = 0;
1174 unsigned int cxvernum_ie_len = 0;
1175 struct rtllib_crypt_data *crypt;
1176 int encrypt;
1177 int PMKCacheIdx;
1178
1179 unsigned int rate_len = (beacon->rates_len ?
1180 (beacon->rates_len + 2) : 0) +
1181 (beacon->rates_ex_len ? (beacon->rates_ex_len) +
1182 2 : 0);
1183
1184 unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1185 unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1186
1187 int len = 0;
1188 crypt = ieee->crypt[ieee->tx_keyidx];
1189 if (crypt != NULL)
1190 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1191 ((0 == strcmp(crypt->ops->name, "WEP") ||
1192 wpa_ie_len));
1193 else
1194 encrypt = 0;
1195
1196 if ((ieee->rtllib_ap_sec_type &&
1197 (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1198 (ieee->bForcedBgMode == true)) {
1199 ieee->pHTInfo->bEnableHT = 0;
1200 ieee->mode = WIRELESS_MODE_G;
1201 }
1202
1203 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1204 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1205 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1206 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1207 encrypt, true);
1208 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1209 realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1210 realtek_ie_len =
1211 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1212 HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1213 &realtek_ie_len);
1214 }
1215 }
1216
1217 if (beacon->bCkipSupported)
1218 ckip_ie_len = 30+2;
1219 if (beacon->bCcxRmEnable)
1220 ccxrm_ie_len = 6+2;
1221 if (beacon->BssCcxVerNumber >= 2)
1222 cxvernum_ie_len = 5+2;
1223
1224 PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1225 if (PMKCacheIdx >= 0) {
1226 wpa_ie_len += 18;
1227 printk(KERN_INFO "[PMK cache]: WPA2 IE length: %x\n",
1228 wpa_ie_len);
1229 }
1230 len = sizeof(struct rtllib_assoc_request_frame) + 2
1231 + beacon->ssid_len
1232 + rate_len
1233 + wpa_ie_len
1234 + wps_ie_len
1235 + wmm_info_len
1236 + turbo_info_len
1237 + ht_cap_len
1238 + realtek_ie_len
1239 + ckip_ie_len
1240 + ccxrm_ie_len
1241 + cxvernum_ie_len
1242 + ieee->tx_headroom;
1243
1244 skb = dev_alloc_skb(len);
1245
1246 if (!skb)
1247 return NULL;
1248
1249 skb_reserve(skb, ieee->tx_headroom);
1250
1251 hdr = (struct rtllib_assoc_request_frame *)
1252 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1253
1254
1255 hdr->header.frame_ctl = RTLLIB_STYPE_ASSOC_REQ;
1256 hdr->header.duration_id = 37;
1257 memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN);
1258 memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1259 memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN);
1260
1261 memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);
1262
1263 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1264 if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1265 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1266
1267 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1268 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1269
1270 if (ieee->short_slot &&
1271 (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1272 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1273
1274
1275 hdr->listen_interval = beacon->listen_interval;
1276
1277 hdr->info_element[0].id = MFIE_TYPE_SSID;
1278
1279 hdr->info_element[0].len = beacon->ssid_len;
1280 tag = skb_put(skb, beacon->ssid_len);
1281 memcpy(tag, beacon->ssid, beacon->ssid_len);
1282
1283 tag = skb_put(skb, rate_len);
1284
1285 if (beacon->rates_len) {
1286 *tag++ = MFIE_TYPE_RATES;
1287 *tag++ = beacon->rates_len;
1288 for (i = 0; i < beacon->rates_len; i++)
1289 *tag++ = beacon->rates[i];
1290 }
1291
1292 if (beacon->rates_ex_len) {
1293 *tag++ = MFIE_TYPE_RATES_EX;
1294 *tag++ = beacon->rates_ex_len;
1295 for (i = 0; i < beacon->rates_ex_len; i++)
1296 *tag++ = beacon->rates_ex[i];
1297 }
1298
1299 if (beacon->bCkipSupported) {
1300 static u8 AironetIeOui[] = {0x00, 0x01, 0x66};
1301 u8 CcxAironetBuf[30];
1302 struct octet_string osCcxAironetIE;
1303
1304 memset(CcxAironetBuf, 0, 30);
1305 osCcxAironetIE.Octet = CcxAironetBuf;
1306 osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1307 memcpy(osCcxAironetIE.Octet, AironetIeOui,
1308 sizeof(AironetIeOui));
1309
1310 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1311 (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1312 tag = skb_put(skb, ckip_ie_len);
1313 *tag++ = MFIE_TYPE_AIRONET;
1314 *tag++ = osCcxAironetIE.Length;
1315 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1316 tag += osCcxAironetIE.Length;
1317 }
1318
1319 if (beacon->bCcxRmEnable) {
1320 static u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 0x00};
1321 struct octet_string osCcxRmCap;
1322
1323 osCcxRmCap.Octet = CcxRmCapBuf;
1324 osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1325 tag = skb_put(skb, ccxrm_ie_len);
1326 *tag++ = MFIE_TYPE_GENERIC;
1327 *tag++ = osCcxRmCap.Length;
1328 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1329 tag += osCcxRmCap.Length;
1330 }
1331
1332 if (beacon->BssCcxVerNumber >= 2) {
1333 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1334 struct octet_string osCcxVerNum;
1335 CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1336 osCcxVerNum.Octet = CcxVerNumBuf;
1337 osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1338 tag = skb_put(skb, cxvernum_ie_len);
1339 *tag++ = MFIE_TYPE_GENERIC;
1340 *tag++ = osCcxVerNum.Length;
1341 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1342 tag += osCcxVerNum.Length;
1343 }
1344 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1345 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1346 tag = skb_put(skb, ht_cap_len);
1347 *tag++ = MFIE_TYPE_HT_CAP;
1348 *tag++ = ht_cap_len - 2;
1349 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1350 tag += ht_cap_len - 2;
1351 }
1352 }
1353
1354 if (wpa_ie_len) {
1355 tag = skb_put(skb, ieee->wpa_ie_len);
1356 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
1357
1358 if (PMKCacheIdx >= 0) {
1359 tag = skb_put(skb, 18);
1360 *tag = 1;
1361 *(tag + 1) = 0;
1362 memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1363 16);
1364 }
1365 }
1366 if (wmm_info_len) {
1367 tag = skb_put(skb, wmm_info_len);
1368 rtllib_WMM_Info(ieee, &tag);
1369 }
1370
1371 if (wps_ie_len && ieee->wps_ie) {
1372 tag = skb_put(skb, wps_ie_len);
1373 memcpy(tag, ieee->wps_ie, wps_ie_len);
1374 }
1375
1376 tag = skb_put(skb, turbo_info_len);
1377 if (turbo_info_len)
1378 rtllib_TURBO_Info(ieee, &tag);
1379
1380 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1381 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1382 tag = skb_put(skb, ht_cap_len);
1383 *tag++ = MFIE_TYPE_GENERIC;
1384 *tag++ = ht_cap_len - 2;
1385 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1386 tag += ht_cap_len - 2;
1387 }
1388
1389 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1390 tag = skb_put(skb, realtek_ie_len);
1391 *tag++ = MFIE_TYPE_GENERIC;
1392 *tag++ = realtek_ie_len - 2;
1393 memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1394 }
1395 }
1396
1397 kfree(ieee->assocreq_ies);
1398 ieee->assocreq_ies = NULL;
1399 ies = &(hdr->info_element[0].id);
1400 ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1401 ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
1402 if (ieee->assocreq_ies)
1403 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
1404 else {
1405 printk(KERN_INFO "%s()Warning: can't alloc memory for assocreq"
1406 "_ies\n", __func__);
1407 ieee->assocreq_ies_len = 0;
1408 }
1409 return skb;
1410 }
1411
1412 void rtllib_associate_abort(struct rtllib_device *ieee)
1413 {
1414
1415 unsigned long flags;
1416 spin_lock_irqsave(&ieee->lock, flags);
1417
1418 ieee->associate_seq++;
1419
1420 /* don't scan, and avoid to have the RX path possibily
1421 * try again to associate. Even do not react to AUTH or
1422 * ASSOC response. Just wait for the retry wq to be scheduled.
1423 * Here we will check if there are good nets to associate
1424 * with, so we retry or just get back to NO_LINK and scanning
1425 */
1426 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1427 RTLLIB_DEBUG_MGMT("Authentication failed\n");
1428 ieee->softmac_stats.no_auth_rs++;
1429 } else {
1430 RTLLIB_DEBUG_MGMT("Association failed\n");
1431 ieee->softmac_stats.no_ass_rs++;
1432 }
1433
1434 ieee->state = RTLLIB_ASSOCIATING_RETRY;
1435
1436 queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq,
1437 RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1438
1439 spin_unlock_irqrestore(&ieee->lock, flags);
1440 }
1441
1442 static void rtllib_associate_abort_cb(unsigned long dev)
1443 {
1444 rtllib_associate_abort((struct rtllib_device *) dev);
1445 }
1446
1447 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 * daddr)
1448 {
1449 struct rtllib_network *beacon = &ieee->current_network;
1450 struct sk_buff *skb;
1451
1452 RTLLIB_DEBUG_MGMT("Stopping scan\n");
1453
1454 ieee->softmac_stats.tx_auth_rq++;
1455
1456 skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1457
1458 if (!skb)
1459 rtllib_associate_abort(ieee);
1460 else {
1461 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING ;
1462 RTLLIB_DEBUG_MGMT("Sending authentication request\n");
1463 softmac_mgmt_xmit(skb, ieee);
1464 if (!timer_pending(&ieee->associate_timer)) {
1465 ieee->associate_timer.expires = jiffies + (HZ / 2);
1466 add_timer(&ieee->associate_timer);
1467 }
1468 }
1469 }
1470
1471 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, int chlen)
1472 {
1473 u8 *c;
1474 struct sk_buff *skb;
1475 struct rtllib_network *beacon = &ieee->current_network;
1476
1477 ieee->associate_seq++;
1478 ieee->softmac_stats.tx_auth_rq++;
1479
1480 skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1481
1482 if (!skb)
1483 rtllib_associate_abort(ieee);
1484 else {
1485 c = skb_put(skb, chlen+2);
1486 *(c++) = MFIE_TYPE_CHALLENGE;
1487 *(c++) = chlen;
1488 memcpy(c, challenge, chlen);
1489
1490 RTLLIB_DEBUG_MGMT("Sending authentication challenge "
1491 "response\n");
1492
1493 rtllib_encrypt_fragment(ieee, skb,
1494 sizeof(struct rtllib_hdr_3addr));
1495
1496 softmac_mgmt_xmit(skb, ieee);
1497 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1498 }
1499 kfree(challenge);
1500 }
1501
1502 static void rtllib_associate_step2(struct rtllib_device *ieee)
1503 {
1504 struct sk_buff *skb;
1505 struct rtllib_network *beacon = &ieee->current_network;
1506
1507 del_timer_sync(&ieee->associate_timer);
1508
1509 RTLLIB_DEBUG_MGMT("Sending association request\n");
1510
1511 ieee->softmac_stats.tx_ass_rq++;
1512 skb = rtllib_association_req(beacon, ieee);
1513 if (!skb)
1514 rtllib_associate_abort(ieee);
1515 else {
1516 softmac_mgmt_xmit(skb, ieee);
1517 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1518 }
1519 }
1520
1521 #define CANCELLED 2
1522 static void rtllib_associate_complete_wq(void *data)
1523 {
1524 struct rtllib_device *ieee = (struct rtllib_device *)
1525 container_of_work_rsl(data,
1526 struct rtllib_device,
1527 associate_complete_wq);
1528 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1529 (&(ieee->PowerSaveControl));
1530 printk(KERN_INFO "Associated successfully\n");
1531 if (ieee->is_silent_reset == 0) {
1532 printk(KERN_INFO "normal associate\n");
1533 notify_wx_assoc_event(ieee);
1534 }
1535
1536 netif_carrier_on(ieee->dev);
1537 ieee->is_roaming = false;
1538 if (rtllib_is_54g(&ieee->current_network) &&
1539 (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1540 ieee->rate = 108;
1541 printk(KERN_INFO"Using G rates:%d\n", ieee->rate);
1542 } else {
1543 ieee->rate = 22;
1544 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1545 printk(KERN_INFO"Using B rates:%d\n", ieee->rate);
1546 }
1547 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1548 printk(KERN_INFO "Successfully associated, ht enabled\n");
1549 HTOnAssocRsp(ieee);
1550 } else {
1551 printk(KERN_INFO "Successfully associated, ht not "
1552 "enabled(%d, %d)\n",
1553 ieee->pHTInfo->bCurrentHTSupport,
1554 ieee->pHTInfo->bEnableHT);
1555 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1556 }
1557 ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1558 ieee->current_network.beacon_interval /
1559 500);
1560 if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1561 ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1562 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1563 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1564 }
1565 pPSC->LpsIdleCount = 0;
1566 ieee->link_change(ieee->dev);
1567
1568 if (ieee->is_silent_reset == 1) {
1569 printk(KERN_INFO "silent reset associate\n");
1570 ieee->is_silent_reset = 0;
1571 }
1572
1573 if (ieee->data_hard_resume)
1574 ieee->data_hard_resume(ieee->dev);
1575
1576 }
1577
1578 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1579 {
1580 }
1581
1582 static void rtllib_associate_complete(struct rtllib_device *ieee)
1583 {
1584 del_timer_sync(&ieee->associate_timer);
1585
1586 ieee->state = RTLLIB_LINKED;
1587 rtllib_sta_send_associnfo(ieee);
1588
1589 queue_work_rsl(ieee->wq, &ieee->associate_complete_wq);
1590 }
1591
1592 static void rtllib_associate_procedure_wq(void *data)
1593 {
1594 struct rtllib_device *ieee = container_of_dwork_rsl(data,
1595 struct rtllib_device,
1596 associate_procedure_wq);
1597 rtllib_stop_scan_syncro(ieee);
1598 if (ieee->rtllib_ips_leave != NULL)
1599 ieee->rtllib_ips_leave(ieee->dev);
1600 down(&ieee->wx_sem);
1601
1602 if (ieee->data_hard_stop)
1603 ieee->data_hard_stop(ieee->dev);
1604
1605 rtllib_stop_scan(ieee);
1606 RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1607 ieee->current_network.channel);
1608 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1609 if (ieee->eRFPowerState == eRfOff) {
1610 RT_TRACE(COMP_DBG, "=============>%s():Rf state is eRfOff,"
1611 " schedule ipsleave wq again,return\n", __func__);
1612 if (ieee->rtllib_ips_leave_wq != NULL)
1613 ieee->rtllib_ips_leave_wq(ieee->dev);
1614 up(&ieee->wx_sem);
1615 return;
1616 }
1617 ieee->associate_seq = 1;
1618
1619 rtllib_associate_step1(ieee, ieee->current_network.bssid);
1620
1621 up(&ieee->wx_sem);
1622 }
1623
1624 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1625 struct rtllib_network *net)
1626 {
1627 u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1628 int tmp_ssid_len = 0;
1629
1630 short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1631
1632 /* we are interested in new new only if we are not associated
1633 * and we are not associating / authenticating
1634 */
1635 if (ieee->state != RTLLIB_NOLINK)
1636 return;
1637
1638 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1639 WLAN_CAPABILITY_ESS))
1640 return;
1641
1642 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1643 WLAN_CAPABILITY_IBSS))
1644 return;
1645
1646 if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1647 (net->channel > ieee->ibss_maxjoin_chal))
1648 return;
1649 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1650 /* if the user specified the AP MAC, we need also the essid
1651 * This could be obtained by beacons or, if the network does not
1652 * broadcast it, it can be put manually.
1653 */
1654 apset = ieee->wap_set;
1655 ssidset = ieee->ssid_set;
1656 ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0');
1657 apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1658 ETH_ALEN) == 0);
1659 if (!ssidbroad) {
1660 ssidmatch = (ieee->current_network.ssid_len ==
1661 net->hidden_ssid_len) &&
1662 (!strncmp(ieee->current_network.ssid,
1663 net->hidden_ssid, net->hidden_ssid_len));
1664 if (net->hidden_ssid_len > 0) {
1665 strncpy(net->ssid, net->hidden_ssid,
1666 net->hidden_ssid_len);
1667 net->ssid_len = net->hidden_ssid_len;
1668 ssidbroad = 1;
1669 }
1670 } else
1671 ssidmatch =
1672 (ieee->current_network.ssid_len == net->ssid_len) &&
1673 (!strncmp(ieee->current_network.ssid, net->ssid,
1674 net->ssid_len));
1675
1676 /* if the user set the AP check if match.
1677 * if the network does not broadcast essid we check the
1678 * user supplyed ANY essid
1679 * if the network does broadcast and the user does not set
1680 * essid it is OK
1681 * if the network does broadcast and the user did set essid
1682 * check if essid match
1683 * if the ap is not set, check that the user set the bssid
1684 * and the network does bradcast and that those two bssid match
1685 */
1686 if ((apset && apmatch &&
1687 ((ssidset && ssidbroad && ssidmatch) ||
1688 (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1689 (!apset && ssidset && ssidbroad && ssidmatch) ||
1690 (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1691 /* if the essid is hidden replace it with the
1692 * essid provided by the user.
1693 */
1694 if (!ssidbroad) {
1695 strncpy(tmp_ssid, ieee->current_network.ssid,
1696 IW_ESSID_MAX_SIZE);
1697 tmp_ssid_len = ieee->current_network.ssid_len;
1698 }
1699 memcpy(&ieee->current_network, net,
1700 sizeof(struct rtllib_network));
1701 if (!ssidbroad) {
1702 strncpy(ieee->current_network.ssid, tmp_ssid,
1703 IW_ESSID_MAX_SIZE);
1704 ieee->current_network.ssid_len = tmp_ssid_len;
1705 }
1706 printk(KERN_INFO"Linking with %s,channel:%d, qos:%d, "
1707 "myHT:%d, networkHT:%d, mode:%x cur_net.flags"
1708 ":0x%x\n", ieee->current_network.ssid,
1709 ieee->current_network.channel,
1710 ieee->current_network.qos_data.supported,
1711 ieee->pHTInfo->bEnableHT,
1712 ieee->current_network.bssht.bdSupportHT,
1713 ieee->current_network.mode,
1714 ieee->current_network.flags);
1715
1716 if ((rtllib_act_scanning(ieee, false)) &&
1717 !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1718 rtllib_stop_scan_syncro(ieee);
1719
1720 ieee->hwscan_ch_bk = ieee->current_network.channel;
1721 HTResetIOTSetting(ieee->pHTInfo);
1722 ieee->wmm_acm = 0;
1723 if (ieee->iw_mode == IW_MODE_INFRA) {
1724 /* Join the network for the first time */
1725 ieee->AsocRetryCount = 0;
1726 if ((ieee->current_network.qos_data.supported == 1) &&
1727 ieee->current_network.bssht.bdSupportHT)
1728 HTResetSelfAndSavePeerSetting(ieee,
1729 &(ieee->current_network));
1730 else
1731 ieee->pHTInfo->bCurrentHTSupport =
1732 false;
1733
1734 ieee->state = RTLLIB_ASSOCIATING;
1735 if (ieee->LedControlHandler != NULL)
1736 ieee->LedControlHandler(ieee->dev,
1737 LED_CTL_START_TO_LINK);
1738 queue_delayed_work_rsl(ieee->wq,
1739 &ieee->associate_procedure_wq, 0);
1740 } else {
1741 if (rtllib_is_54g(&ieee->current_network) &&
1742 (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1743 ieee->rate = 108;
1744 ieee->SetWirelessMode(ieee->dev, IEEE_G);
1745 printk(KERN_INFO"Using G rates\n");
1746 } else {
1747 ieee->rate = 22;
1748 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1749 printk(KERN_INFO"Using B rates\n");
1750 }
1751 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1752 ieee->state = RTLLIB_LINKED;
1753 }
1754 }
1755 }
1756 }
1757
1758 void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1759 {
1760 unsigned long flags;
1761 struct rtllib_network *target;
1762
1763 spin_lock_irqsave(&ieee->lock, flags);
1764
1765 list_for_each_entry(target, &ieee->network_list, list) {
1766
1767 /* if the state become different that NOLINK means
1768 * we had found what we are searching for
1769 */
1770
1771 if (ieee->state != RTLLIB_NOLINK)
1772 break;
1773
1774 if (ieee->scan_age == 0 || time_after(target->last_scanned +
1775 ieee->scan_age, jiffies))
1776 rtllib_softmac_new_net(ieee, target);
1777 }
1778 spin_unlock_irqrestore(&ieee->lock, flags);
1779 }
1780
1781 static inline u16 auth_parse(struct sk_buff *skb, u8** challenge, int *chlen)
1782 {
1783 struct rtllib_authentication *a;
1784 u8 *t;
1785 if (skb->len < (sizeof(struct rtllib_authentication) -
1786 sizeof(struct rtllib_info_element))) {
1787 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1788 return 0xcafe;
1789 }
1790 *challenge = NULL;
1791 a = (struct rtllib_authentication *) skb->data;
1792 if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1793 t = skb->data + sizeof(struct rtllib_authentication);
1794
1795 if (*(t++) == MFIE_TYPE_CHALLENGE) {
1796 *chlen = *(t++);
1797 *challenge = kmalloc(*chlen, GFP_ATOMIC);
1798 memcpy(*challenge, t, *chlen); /*TODO - check here*/
1799 }
1800 }
1801 return cpu_to_le16(a->status);
1802 }
1803
1804 static int auth_rq_parse(struct sk_buff *skb, u8 *dest)
1805 {
1806 struct rtllib_authentication *a;
1807
1808 if (skb->len < (sizeof(struct rtllib_authentication) -
1809 sizeof(struct rtllib_info_element))) {
1810 RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n",
1811 skb->len);
1812 return -1;
1813 }
1814 a = (struct rtllib_authentication *) skb->data;
1815
1816 memcpy(dest, a->header.addr2, ETH_ALEN);
1817
1818 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1819 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1820
1821 return WLAN_STATUS_SUCCESS;
1822 }
1823
1824 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1825 u8 *src)
1826 {
1827 u8 *tag;
1828 u8 *skbend;
1829 u8 *ssid = NULL;
1830 u8 ssidlen = 0;
1831 struct rtllib_hdr_3addr *header =
1832 (struct rtllib_hdr_3addr *) skb->data;
1833 bool bssid_match;
1834
1835 if (skb->len < sizeof(struct rtllib_hdr_3addr))
1836 return -1; /* corrupted */
1837
1838 bssid_match =
1839 (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) &&
1840 (memcmp(header->addr3, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0);
1841 if (bssid_match)
1842 return -1;
1843
1844 memcpy(src, header->addr2, ETH_ALEN);
1845
1846 skbend = (u8 *)skb->data + skb->len;
1847
1848 tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1849
1850 while (tag + 1 < skbend) {
1851 if (*tag == 0) {
1852 ssid = tag + 2;
1853 ssidlen = *(tag + 1);
1854 break;
1855 }
1856 tag++; /* point to the len field */
1857 tag = tag + *(tag); /* point to the last data byte of the tag */
1858 tag++; /* point to the next tag */
1859 }
1860
1861 if (ssidlen == 0)
1862 return 1;
1863
1864 if (!ssid)
1865 return 1; /* ssid not found in tagged param */
1866
1867 return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1868 }
1869
1870 static int assoc_rq_parse(struct sk_buff *skb, u8 *dest)
1871 {
1872 struct rtllib_assoc_request_frame *a;
1873
1874 if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1875 sizeof(struct rtllib_info_element))) {
1876
1877 RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len);
1878 return -1;
1879 }
1880
1881 a = (struct rtllib_assoc_request_frame *) skb->data;
1882
1883 memcpy(dest, a->header.addr2, ETH_ALEN);
1884
1885 return 0;
1886 }
1887
1888 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1889 int *aid)
1890 {
1891 struct rtllib_assoc_response_frame *response_head;
1892 u16 status_code;
1893
1894 if (skb->len < sizeof(struct rtllib_assoc_response_frame)) {
1895 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1896 return 0xcafe;
1897 }
1898
1899 response_head = (struct rtllib_assoc_response_frame *) skb->data;
1900 *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1901
1902 status_code = le16_to_cpu(response_head->status);
1903 if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1904 status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1905 ((ieee->mode == IEEE_G) &&
1906 (ieee->current_network.mode == IEEE_N_24G) &&
1907 (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1908 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1909 } else {
1910 ieee->AsocRetryCount = 0;
1911 }
1912
1913 return le16_to_cpu(response_head->status);
1914 }
1915
1916 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1917 {
1918 u8 dest[ETH_ALEN];
1919 ieee->softmac_stats.rx_probe_rq++;
1920 if (probe_rq_parse(ieee, skb, dest) > 0) {
1921 ieee->softmac_stats.tx_probe_rs++;
1922 rtllib_resp_to_probe(ieee, dest);
1923 }
1924 }
1925
1926 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1927 struct sk_buff *skb)
1928 {
1929 u8 dest[ETH_ALEN];
1930 int status;
1931 ieee->softmac_stats.rx_auth_rq++;
1932
1933 status = auth_rq_parse(skb, dest);
1934 if (status != -1)
1935 rtllib_resp_to_auth(ieee, status, dest);
1936 }
1937
1938 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1939 struct sk_buff *skb)
1940 {
1941
1942 u8 dest[ETH_ALEN];
1943
1944 ieee->softmac_stats.rx_ass_rq++;
1945 if (assoc_rq_parse(skb, dest) != -1)
1946 rtllib_resp_to_assoc_rq(ieee, dest);
1947
1948 printk(KERN_INFO"New client associated: %pM\n", dest);
1949 }
1950
1951 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1952 {
1953
1954 struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1955
1956 if (buf)
1957 softmac_ps_mgmt_xmit(buf, ieee);
1958 }
1959
1960 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1961 {
1962 struct sk_buff *buf = rtllib_pspoll_func(ieee);
1963
1964 if (buf)
1965 softmac_ps_mgmt_xmit(buf, ieee);
1966 }
1967
1968 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1969 {
1970 int timeout = ieee->ps_timeout;
1971 u8 dtim;
1972 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1973 (&(ieee->PowerSaveControl));
1974
1975 if (ieee->LPSDelayCnt) {
1976 ieee->LPSDelayCnt--;
1977 return 0;
1978 }
1979
1980 dtim = ieee->current_network.dtim_data;
1981 if (!(dtim & RTLLIB_DTIM_VALID))
1982 return 0;
1983 timeout = ieee->current_network.beacon_interval;
1984 ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1985 /* there's no need to nofity AP that I find you buffered
1986 * with broadcast packet */
1987 if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1988 return 2;
1989
1990 if (!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout)))
1991 return 0;
1992 if (!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout)))
1993 return 0;
1994 if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
1995 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
1996 return 0;
1997
1998 if (time) {
1999 if (ieee->bAwakePktSent == true) {
2000 pPSC->LPSAwakeIntvl = 1;
2001 } else {
2002 u8 MaxPeriod = 1;
2003
2004 if (pPSC->LPSAwakeIntvl == 0)
2005 pPSC->LPSAwakeIntvl = 1;
2006 if (pPSC->RegMaxLPSAwakeIntvl == 0)
2007 MaxPeriod = 1;
2008 else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2009 MaxPeriod = ieee->current_network.dtim_period;
2010 else
2011 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2012 pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2013 MaxPeriod) ? MaxPeriod :
2014 (pPSC->LPSAwakeIntvl + 1);
2015 }
2016 {
2017 u8 LPSAwakeIntvl_tmp = 0;
2018 u8 period = ieee->current_network.dtim_period;
2019 u8 count = ieee->current_network.tim.tim_count;
2020 if (count == 0) {
2021 if (pPSC->LPSAwakeIntvl > period)
2022 LPSAwakeIntvl_tmp = period +
2023 (pPSC->LPSAwakeIntvl -
2024 period) -
2025 ((pPSC->LPSAwakeIntvl-period) %
2026 period);
2027 else
2028 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2029
2030 } else {
2031 if (pPSC->LPSAwakeIntvl >
2032 ieee->current_network.tim.tim_count)
2033 LPSAwakeIntvl_tmp = count +
2034 (pPSC->LPSAwakeIntvl - count) -
2035 ((pPSC->LPSAwakeIntvl-count)%period);
2036 else
2037 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2038 }
2039
2040 *time = ieee->current_network.last_dtim_sta_time
2041 + MSECS(ieee->current_network.beacon_interval *
2042 LPSAwakeIntvl_tmp);
2043 }
2044 }
2045
2046 return 1;
2047
2048
2049 }
2050
2051 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2052 {
2053 u64 time;
2054 short sleep;
2055 unsigned long flags, flags2;
2056
2057 spin_lock_irqsave(&ieee->lock, flags);
2058
2059 if ((ieee->ps == RTLLIB_PS_DISABLED ||
2060 ieee->iw_mode != IW_MODE_INFRA ||
2061 ieee->state != RTLLIB_LINKED)) {
2062 RT_TRACE(COMP_DBG, "=====>%s(): no need to ps,wake up!! "
2063 "ieee->ps is %d, ieee->iw_mode is %d, ieee->state"
2064 " is %d\n", __func__, ieee->ps, ieee->iw_mode,
2065 ieee->state);
2066 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2067 rtllib_sta_wakeup(ieee, 1);
2068
2069 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2070 }
2071 sleep = rtllib_sta_ps_sleep(ieee, &time);
2072 /* 2 wake, 1 sleep, 0 do nothing */
2073 if (sleep == 0)
2074 goto out;
2075 if (sleep == 1) {
2076 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2077 ieee->enter_sleep_state(ieee->dev, time);
2078 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2079 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2080
2081 if (ieee->ps_is_queue_empty(ieee->dev)) {
2082 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2083 ieee->ack_tx_to_ieee = 1;
2084 rtllib_sta_ps_send_null_frame(ieee, 1);
2085 ieee->ps_time = time;
2086 }
2087 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2088
2089 }
2090
2091 ieee->bAwakePktSent = false;
2092
2093 } else if (sleep == 2) {
2094 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2095
2096 rtllib_sta_wakeup(ieee, 1);
2097
2098 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2099 }
2100
2101 out:
2102 spin_unlock_irqrestore(&ieee->lock, flags);
2103
2104 }
2105
2106 void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2107 {
2108 if (ieee->sta_sleep == LPS_IS_WAKE) {
2109 if (nl) {
2110 if (ieee->pHTInfo->IOTAction &
2111 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2112 ieee->ack_tx_to_ieee = 1;
2113 rtllib_sta_ps_send_null_frame(ieee, 0);
2114 } else {
2115 ieee->ack_tx_to_ieee = 1;
2116 rtllib_sta_ps_send_pspoll_frame(ieee);
2117 }
2118 }
2119 return;
2120
2121 }
2122
2123 if (ieee->sta_sleep == LPS_IS_SLEEP)
2124 ieee->sta_wake_up(ieee->dev);
2125 if (nl) {
2126 if (ieee->pHTInfo->IOTAction &
2127 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2128 ieee->ack_tx_to_ieee = 1;
2129 rtllib_sta_ps_send_null_frame(ieee, 0);
2130 } else {
2131 ieee->ack_tx_to_ieee = 1;
2132 ieee->polling = true;
2133 rtllib_sta_ps_send_pspoll_frame(ieee);
2134 }
2135
2136 } else {
2137 ieee->sta_sleep = LPS_IS_WAKE;
2138 ieee->polling = false;
2139 }
2140 }
2141
2142 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2143 {
2144 unsigned long flags, flags2;
2145
2146 spin_lock_irqsave(&ieee->lock, flags);
2147
2148 if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2149 /* Null frame with PS bit set */
2150 if (success) {
2151 ieee->sta_sleep = LPS_IS_SLEEP;
2152 ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2153 }
2154 /* if the card report not success we can't be sure the AP
2155 * has not RXed so we can't assume the AP believe us awake
2156 */
2157 } else {/* 21112005 - tx again null without PS bit if lost */
2158
2159 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2160 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2161 if (ieee->pHTInfo->IOTAction &
2162 HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2163 rtllib_sta_ps_send_null_frame(ieee, 0);
2164 else
2165 rtllib_sta_ps_send_pspoll_frame(ieee);
2166 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2167 }
2168 }
2169 spin_unlock_irqrestore(&ieee->lock, flags);
2170 }
2171
2172 static void rtllib_process_action(struct rtllib_device *ieee, struct sk_buff *skb)
2173 {
2174 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2175 u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2176 u8 category = 0;
2177
2178 if (act == NULL) {
2179 RTLLIB_DEBUG(RTLLIB_DL_ERR, "error to get payload of "
2180 "action frame\n");
2181 return;
2182 }
2183
2184 category = *act;
2185 act++;
2186 switch (category) {
2187 case ACT_CAT_BA:
2188 switch (*act) {
2189 case ACT_ADDBAREQ:
2190 rtllib_rx_ADDBAReq(ieee, skb);
2191 break;
2192 case ACT_ADDBARSP:
2193 rtllib_rx_ADDBARsp(ieee, skb);
2194 break;
2195 case ACT_DELBA:
2196 rtllib_rx_DELBA(ieee, skb);
2197 break;
2198 }
2199 break;
2200 default:
2201 break;
2202 }
2203 return;
2204 }
2205
2206 inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2207 struct rtllib_rx_stats *rx_stats)
2208 {
2209 u16 errcode;
2210 int aid;
2211 u8 *ies;
2212 struct rtllib_assoc_response_frame *assoc_resp;
2213 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2214
2215 RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
2216 WLAN_FC_GET_STYPE(header->frame_ctl));
2217
2218 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2219 ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2220 (ieee->iw_mode == IW_MODE_INFRA)) {
2221 errcode = assoc_parse(ieee, skb, &aid);
2222 if (0 == errcode) {
2223 struct rtllib_network *network =
2224 kzalloc(sizeof(struct rtllib_network),
2225 GFP_ATOMIC);
2226
2227 if (!network)
2228 return 1;
2229 memset(network, 0, sizeof(*network));
2230 ieee->state = RTLLIB_LINKED;
2231 ieee->assoc_id = aid;
2232 ieee->softmac_stats.rx_ass_ok++;
2233 /* station support qos */
2234 /* Let the register setting default with Legacy station */
2235 assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2236 if (ieee->current_network.qos_data.supported == 1) {
2237 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2238 rx_stats->len - sizeof(*assoc_resp),
2239 network, rx_stats)) {
2240 kfree(network);
2241 return 1;
2242 } else {
2243 memcpy(ieee->pHTInfo->PeerHTCapBuf,
2244 network->bssht.bdHTCapBuf,
2245 network->bssht.bdHTCapLen);
2246 memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2247 network->bssht.bdHTInfoBuf,
2248 network->bssht.bdHTInfoLen);
2249 }
2250 if (ieee->handle_assoc_response != NULL)
2251 ieee->handle_assoc_response(ieee->dev,
2252 (struct rtllib_assoc_response_frame *)header,
2253 network);
2254 kfree(network);
2255 }
2256
2257 kfree(ieee->assocresp_ies);
2258 ieee->assocresp_ies = NULL;
2259 ies = &(assoc_resp->info_element[0].id);
2260 ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2261 ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2262 GFP_ATOMIC);
2263 if (ieee->assocresp_ies)
2264 memcpy(ieee->assocresp_ies, ies,
2265 ieee->assocresp_ies_len);
2266 else {
2267 printk(KERN_INFO "%s()Warning: can't alloc "
2268 "memory for assocresp_ies\n", __func__);
2269 ieee->assocresp_ies_len = 0;
2270 }
2271 rtllib_associate_complete(ieee);
2272 } else {
2273 /* aid could not been allocated */
2274 ieee->softmac_stats.rx_ass_err++;
2275 printk(KERN_INFO "Association response status code 0x%x\n",
2276 errcode);
2277 RTLLIB_DEBUG_MGMT(
2278 "Association response status code 0x%x\n",
2279 errcode);
2280 if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2281 queue_delayed_work_rsl(ieee->wq,
2282 &ieee->associate_procedure_wq, 0);
2283 else
2284 rtllib_associate_abort(ieee);
2285 }
2286 }
2287 return 0;
2288 }
2289
2290 inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2291 struct rtllib_rx_stats *rx_stats)
2292 {
2293 u16 errcode;
2294 u8 *challenge;
2295 int chlen = 0;
2296 bool bSupportNmode = true, bHalfSupportNmode = false;
2297
2298 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2299 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2300 (ieee->iw_mode == IW_MODE_INFRA)) {
2301 RTLLIB_DEBUG_MGMT("Received authentication response");
2302
2303 errcode = auth_parse(skb, &challenge, &chlen);
2304 if (0 == errcode) {
2305 if (ieee->open_wep || !challenge) {
2306 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2307 ieee->softmac_stats.rx_auth_rs_ok++;
2308 if (!(ieee->pHTInfo->IOTAction &
2309 HT_IOT_ACT_PURE_N_MODE)) {
2310 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2311 if (IsHTHalfNmodeAPs(ieee)) {
2312 bSupportNmode = true;
2313 bHalfSupportNmode = true;
2314 } else {
2315 bSupportNmode = false;
2316 bHalfSupportNmode = false;
2317 }
2318 }
2319 }
2320 /* Dummy wirless mode setting to avoid
2321 * encryption issue */
2322 if (bSupportNmode) {
2323 ieee->SetWirelessMode(ieee->dev,
2324 ieee->current_network.mode);
2325 } else {
2326 /*TODO*/
2327 ieee->SetWirelessMode(ieee->dev,
2328 IEEE_G);
2329 }
2330
2331 if (ieee->current_network.mode ==
2332 IEEE_N_24G &&
2333 bHalfSupportNmode == true) {
2334 printk(KERN_INFO "======>enter "
2335 "half N mode\n");
2336 ieee->bHalfWirelessN24GMode =
2337 true;
2338 } else
2339 ieee->bHalfWirelessN24GMode =
2340 false;
2341
2342 rtllib_associate_step2(ieee);
2343 } else {
2344 rtllib_auth_challenge(ieee, challenge,
2345 chlen);
2346 }
2347 } else {
2348 ieee->softmac_stats.rx_auth_rs_err++;
2349 RTLLIB_DEBUG_MGMT("Authentication respose"
2350 " status code 0x%x", errcode);
2351
2352 printk(KERN_INFO "Authentication respose "
2353 "status code 0x%x", errcode);
2354 rtllib_associate_abort(ieee);
2355 }
2356
2357 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2358 rtllib_rx_auth_rq(ieee, skb);
2359 }
2360 }
2361 return 0;
2362 }
2363
2364 inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2365 {
2366 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2367
2368 if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2369 return 0;
2370
2371 /* FIXME for now repeat all the association procedure
2372 * both for disassociation and deauthentication
2373 */
2374 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2375 ieee->state == RTLLIB_LINKED &&
2376 (ieee->iw_mode == IW_MODE_INFRA)) {
2377 printk(KERN_INFO "==========>received disassoc/deauth(%x) "
2378 "frame, reason code:%x\n",
2379 WLAN_FC_GET_STYPE(header->frame_ctl),
2380 ((struct rtllib_disassoc *)skb->data)->reason);
2381 ieee->state = RTLLIB_ASSOCIATING;
2382 ieee->softmac_stats.reassoc++;
2383 ieee->is_roaming = true;
2384 ieee->LinkDetectInfo.bBusyTraffic = false;
2385 rtllib_disassociate(ieee);
2386 RemovePeerTS(ieee, header->addr2);
2387 if (ieee->LedControlHandler != NULL)
2388 ieee->LedControlHandler(ieee->dev,
2389 LED_CTL_START_TO_LINK);
2390
2391 if (!(ieee->rtllib_ap_sec_type(ieee) &
2392 (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2393 queue_delayed_work_rsl(ieee->wq,
2394 &ieee->associate_procedure_wq, 5);
2395 }
2396 return 0;
2397 }
2398
2399 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2400 struct sk_buff *skb,
2401 struct rtllib_rx_stats *rx_stats, u16 type,
2402 u16 stype)
2403 {
2404 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2405
2406 if (!ieee->proto_started)
2407 return 0;
2408
2409 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2410 case RTLLIB_STYPE_ASSOC_RESP:
2411 case RTLLIB_STYPE_REASSOC_RESP:
2412 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2413 return 1;
2414 break;
2415 case RTLLIB_STYPE_ASSOC_REQ:
2416 case RTLLIB_STYPE_REASSOC_REQ:
2417 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2418 ieee->iw_mode == IW_MODE_MASTER)
2419 rtllib_rx_assoc_rq(ieee, skb);
2420 break;
2421 case RTLLIB_STYPE_AUTH:
2422 rtllib_rx_auth(ieee, skb, rx_stats);
2423 break;
2424 case RTLLIB_STYPE_DISASSOC:
2425 case RTLLIB_STYPE_DEAUTH:
2426 rtllib_rx_deauth(ieee, skb);
2427 break;
2428 case RTLLIB_STYPE_MANAGE_ACT:
2429 rtllib_process_action(ieee, skb);
2430 break;
2431 default:
2432 return -1;
2433 break;
2434 }
2435 return 0;
2436 }
2437
2438 /* following are for a simplier TX queue management.
2439 * Instead of using netif_[stop/wake]_queue the driver
2440 * will uses these two function (plus a reset one), that
2441 * will internally uses the kernel netif_* and takes
2442 * care of the ieee802.11 fragmentation.
2443 * So the driver receives a fragment per time and might
2444 * call the stop function when it want without take care
2445 * to have enought room to TX an entire packet.
2446 * This might be useful if each fragment need it's own
2447 * descriptor, thus just keep a total free memory > than
2448 * the max fragmentation treshold is not enought.. If the
2449 * ieee802.11 stack passed a TXB struct then you needed
2450 * to keep N free descriptors where
2451 * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2452 * In this way you need just one and the 802.11 stack
2453 * will take care of buffering fragments and pass them to
2454 * to the driver later, when it wakes the queue.
2455 */
2456 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2457 {
2458
2459 unsigned int queue_index = txb->queue_index;
2460 unsigned long flags;
2461 int i;
2462 struct cb_desc *tcb_desc = NULL;
2463 unsigned long queue_len = 0;
2464
2465 spin_lock_irqsave(&ieee->lock, flags);
2466
2467 /* called with 2nd parm 0, no tx mgmt lock required */
2468 rtllib_sta_wakeup(ieee, 0);
2469
2470 /* update the tx status */
2471 tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2472 MAX_DEV_ADDR_SIZE);
2473 if (tcb_desc->bMulticast)
2474 ieee->stats.multicast++;
2475
2476 /* if xmit available, just xmit it immediately, else just insert it to
2477 * the wait queue */
2478 for (i = 0; i < txb->nr_frags; i++) {
2479 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2480 if ((queue_len != 0) ||\
2481 (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2482 (ieee->queue_stop)) {
2483 /* insert the skb packet to the wait queue */
2484 /* as for the completion function, it does not need
2485 * to check it any more.
2486 * */
2487 if (queue_len < 200)
2488 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2489 txb->fragments[i]);
2490 else
2491 kfree_skb(txb->fragments[i]);
2492 } else {
2493 ieee->softmac_data_hard_start_xmit(
2494 txb->fragments[i],
2495 ieee->dev, ieee->rate);
2496 }
2497 }
2498
2499 rtllib_txb_free(txb);
2500
2501 spin_unlock_irqrestore(&ieee->lock, flags);
2502
2503 }
2504
2505 /* called with ieee->lock acquired */
2506 static void rtllib_resume_tx(struct rtllib_device *ieee)
2507 {
2508 int i;
2509 for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags;
2510 i++) {
2511
2512 if (ieee->queue_stop) {
2513 ieee->tx_pending.frag = i;
2514 return;
2515 } else {
2516
2517 ieee->softmac_data_hard_start_xmit(
2518 ieee->tx_pending.txb->fragments[i],
2519 ieee->dev, ieee->rate);
2520 ieee->stats.tx_packets++;
2521 }
2522 }
2523
2524 rtllib_txb_free(ieee->tx_pending.txb);
2525 ieee->tx_pending.txb = NULL;
2526 }
2527
2528
2529 void rtllib_reset_queue(struct rtllib_device *ieee)
2530 {
2531 unsigned long flags;
2532
2533 spin_lock_irqsave(&ieee->lock, flags);
2534 init_mgmt_queue(ieee);
2535 if (ieee->tx_pending.txb) {
2536 rtllib_txb_free(ieee->tx_pending.txb);
2537 ieee->tx_pending.txb = NULL;
2538 }
2539 ieee->queue_stop = 0;
2540 spin_unlock_irqrestore(&ieee->lock, flags);
2541
2542 }
2543
2544 void rtllib_wake_queue(struct rtllib_device *ieee)
2545 {
2546
2547 unsigned long flags;
2548 struct sk_buff *skb;
2549 struct rtllib_hdr_3addr *header;
2550
2551 spin_lock_irqsave(&ieee->lock, flags);
2552 if (!ieee->queue_stop)
2553 goto exit;
2554
2555 ieee->queue_stop = 0;
2556
2557 if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) {
2558 while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) {
2559
2560 header = (struct rtllib_hdr_3addr *) skb->data;
2561
2562 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2563
2564 if (ieee->seq_ctrl[0] == 0xFFF)
2565 ieee->seq_ctrl[0] = 0;
2566 else
2567 ieee->seq_ctrl[0]++;
2568
2569 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
2570 ieee->basic_rate);
2571 }
2572 }
2573 if (!ieee->queue_stop && ieee->tx_pending.txb)
2574 rtllib_resume_tx(ieee);
2575
2576 if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) {
2577 ieee->softmac_stats.swtxawake++;
2578 netif_wake_queue(ieee->dev);
2579 }
2580
2581 exit:
2582 spin_unlock_irqrestore(&ieee->lock, flags);
2583 }
2584
2585
2586 void rtllib_stop_queue(struct rtllib_device *ieee)
2587 {
2588
2589 if (!netif_queue_stopped(ieee->dev)) {
2590 netif_stop_queue(ieee->dev);
2591 ieee->softmac_stats.swtxstop++;
2592 }
2593 ieee->queue_stop = 1;
2594
2595 }
2596
2597 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2598 {
2599 unsigned int i;
2600 for (i = 0; i < ieee->dev->num_tx_queues; i++)
2601 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2602
2603 netif_tx_stop_all_queues(ieee->dev);
2604 }
2605
2606 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2607 {
2608 netif_tx_wake_all_queues(ieee->dev);
2609 }
2610
2611 inline void rtllib_randomize_cell(struct rtllib_device *ieee)
2612 {
2613
2614 get_random_bytes(ieee->current_network.bssid, ETH_ALEN);
2615
2616 /* an IBSS cell address must have the two less significant
2617 * bits of the first byte = 2
2618 */
2619 ieee->current_network.bssid[0] &= ~0x01;
2620 ieee->current_network.bssid[0] |= 0x02;
2621 }
2622
2623 /* called in user context only */
2624 void rtllib_start_master_bss(struct rtllib_device *ieee)
2625 {
2626 ieee->assoc_id = 1;
2627
2628 if (ieee->current_network.ssid_len == 0) {
2629 strncpy(ieee->current_network.ssid,
2630 RTLLIB_DEFAULT_TX_ESSID,
2631 IW_ESSID_MAX_SIZE);
2632
2633 ieee->current_network.ssid_len =
2634 strlen(RTLLIB_DEFAULT_TX_ESSID);
2635 ieee->ssid_set = 1;
2636 }
2637
2638 memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN);
2639
2640 ieee->set_chan(ieee->dev, ieee->current_network.channel);
2641 ieee->state = RTLLIB_LINKED;
2642 ieee->link_change(ieee->dev);
2643 notify_wx_assoc_event(ieee);
2644
2645 if (ieee->data_hard_resume)
2646 ieee->data_hard_resume(ieee->dev);
2647
2648 netif_carrier_on(ieee->dev);
2649 }
2650
2651 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2652 {
2653 /* reset hardware status */
2654 if (ieee->raw_tx) {
2655 if (ieee->data_hard_resume)
2656 ieee->data_hard_resume(ieee->dev);
2657
2658 netif_carrier_on(ieee->dev);
2659 }
2660 }
2661
2662 static void rtllib_start_ibss_wq(void *data)
2663 {
2664 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2665 struct rtllib_device, start_ibss_wq);
2666 /* iwconfig mode ad-hoc will schedule this and return
2667 * on the other hand this will block further iwconfig SET
2668 * operations because of the wx_sem hold.
2669 * Anyway some most set operations set a flag to speed-up
2670 * (abort) this wq (when syncro scanning) before sleeping
2671 * on the semaphore
2672 */
2673 if (!ieee->proto_started) {
2674 printk(KERN_INFO "==========oh driver down return\n");
2675 return;
2676 }
2677 down(&ieee->wx_sem);
2678
2679 if (ieee->current_network.ssid_len == 0) {
2680 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2681 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2682 ieee->ssid_set = 1;
2683 }
2684
2685 ieee->state = RTLLIB_NOLINK;
2686 ieee->mode = IEEE_G;
2687 /* check if we have this cell in our network list */
2688 rtllib_softmac_check_all_nets(ieee);
2689
2690
2691 /* if not then the state is not linked. Maybe the user swithced to
2692 * ad-hoc mode just after being in monitor mode, or just after
2693 * being very few time in managed mode (so the card have had no
2694 * time to scan all the chans..) or we have just run up the iface
2695 * after setting ad-hoc mode. So we have to give another try..
2696 * Here, in ibss mode, should be safe to do this without extra care
2697 * (in bss mode we had to make sure no-one tryed to associate when
2698 * we had just checked the ieee->state and we was going to start the
2699 * scan) beacause in ibss mode the rtllib_new_net function, when
2700 * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2701 * so, at worst, we waste a bit of time to initiate an unneeded syncro
2702 * scan, that will stop at the first round because it sees the state
2703 * associated.
2704 */
2705 if (ieee->state == RTLLIB_NOLINK)
2706 rtllib_start_scan_syncro(ieee, 0);
2707
2708 /* the network definitively is not here.. create a new cell */
2709 if (ieee->state == RTLLIB_NOLINK) {
2710 printk(KERN_INFO "creating new IBSS cell\n");
2711 ieee->current_network.channel = ieee->IbssStartChnl;
2712 if (!ieee->wap_set)
2713 rtllib_randomize_cell(ieee);
2714
2715 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2716
2717 ieee->current_network.rates_len = 4;
2718
2719 ieee->current_network.rates[0] =
2720 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2721 ieee->current_network.rates[1] =
2722 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2723 ieee->current_network.rates[2] =
2724 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2725 ieee->current_network.rates[3] =
2726 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2727
2728 } else
2729 ieee->current_network.rates_len = 0;
2730
2731 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2732 ieee->current_network.rates_ex_len = 8;
2733
2734 ieee->current_network.rates_ex[0] =
2735 RTLLIB_OFDM_RATE_6MB;
2736 ieee->current_network.rates_ex[1] =
2737 RTLLIB_OFDM_RATE_9MB;
2738 ieee->current_network.rates_ex[2] =
2739 RTLLIB_OFDM_RATE_12MB;
2740 ieee->current_network.rates_ex[3] =
2741 RTLLIB_OFDM_RATE_18MB;
2742 ieee->current_network.rates_ex[4] =
2743 RTLLIB_OFDM_RATE_24MB;
2744 ieee->current_network.rates_ex[5] =
2745 RTLLIB_OFDM_RATE_36MB;
2746 ieee->current_network.rates_ex[6] =
2747 RTLLIB_OFDM_RATE_48MB;
2748 ieee->current_network.rates_ex[7] =
2749 RTLLIB_OFDM_RATE_54MB;
2750
2751 ieee->rate = 108;
2752 } else {
2753 ieee->current_network.rates_ex_len = 0;
2754 ieee->rate = 22;
2755 }
2756
2757 ieee->current_network.qos_data.supported = 0;
2758 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2759 ieee->current_network.mode = ieee->mode;
2760 ieee->current_network.atim_window = 0;
2761 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2762 }
2763
2764 printk(KERN_INFO "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2765 if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2766 HTUseDefaultSetting(ieee);
2767 else
2768 ieee->pHTInfo->bCurrentHTSupport = false;
2769
2770 ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2771 (u8 *)(&ieee->state));
2772
2773 ieee->state = RTLLIB_LINKED;
2774 ieee->link_change(ieee->dev);
2775
2776 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2777 if (ieee->LedControlHandler != NULL)
2778 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2779
2780 rtllib_start_send_beacons(ieee);
2781
2782 notify_wx_assoc_event(ieee);
2783
2784 if (ieee->data_hard_resume)
2785 ieee->data_hard_resume(ieee->dev);
2786
2787 netif_carrier_on(ieee->dev);
2788
2789 up(&ieee->wx_sem);
2790 }
2791
2792 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2793 {
2794 queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, MSECS(150));
2795 }
2796
2797 /* this is called only in user context, with wx_sem held */
2798 void rtllib_start_bss(struct rtllib_device *ieee)
2799 {
2800 unsigned long flags;
2801 if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2802 if (!ieee->bGlobalDomain)
2803 return;
2804 }
2805 /* check if we have already found the net we
2806 * are interested in (if any).
2807 * if not (we are disassociated and we are not
2808 * in associating / authenticating phase) start the background scanning.
2809 */
2810 rtllib_softmac_check_all_nets(ieee);
2811
2812 /* ensure no-one start an associating process (thus setting
2813 * the ieee->state to rtllib_ASSOCIATING) while we
2814 * have just cheked it and we are going to enable scan.
2815 * The rtllib_new_net function is always called with
2816 * lock held (from both rtllib_softmac_check_all_nets and
2817 * the rx path), so we cannot be in the middle of such function
2818 */
2819 spin_lock_irqsave(&ieee->lock, flags);
2820
2821 if (ieee->state == RTLLIB_NOLINK)
2822 rtllib_start_scan(ieee);
2823 spin_unlock_irqrestore(&ieee->lock, flags);
2824 }
2825
2826 static void rtllib_link_change_wq(void *data)
2827 {
2828 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2829 struct rtllib_device, link_change_wq);
2830 ieee->link_change(ieee->dev);
2831 }
2832 /* called only in userspace context */
2833 void rtllib_disassociate(struct rtllib_device *ieee)
2834 {
2835 netif_carrier_off(ieee->dev);
2836 if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2837 rtllib_reset_queue(ieee);
2838
2839 if (ieee->data_hard_stop)
2840 ieee->data_hard_stop(ieee->dev);
2841 if (IS_DOT11D_ENABLE(ieee))
2842 Dot11d_Reset(ieee);
2843 ieee->state = RTLLIB_NOLINK;
2844 ieee->is_set_key = false;
2845 ieee->wap_set = 0;
2846
2847 queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0);
2848
2849 notify_wx_assoc_event(ieee);
2850 }
2851
2852 static void rtllib_associate_retry_wq(void *data)
2853 {
2854 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2855 struct rtllib_device, associate_retry_wq);
2856 unsigned long flags;
2857
2858 down(&ieee->wx_sem);
2859 if (!ieee->proto_started)
2860 goto exit;
2861
2862 if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2863 goto exit;
2864
2865 /* until we do not set the state to RTLLIB_NOLINK
2866 * there are no possibility to have someone else trying
2867 * to start an association procdure (we get here with
2868 * ieee->state = RTLLIB_ASSOCIATING).
2869 * When we set the state to RTLLIB_NOLINK it is possible
2870 * that the RX path run an attempt to associate, but
2871 * both rtllib_softmac_check_all_nets and the
2872 * RX path works with ieee->lock held so there are no
2873 * problems. If we are still disassociated then start a scan.
2874 * the lock here is necessary to ensure no one try to start
2875 * an association procedure when we have just checked the
2876 * state and we are going to start the scan.
2877 */
2878 ieee->beinretry = true;
2879 ieee->state = RTLLIB_NOLINK;
2880
2881 rtllib_softmac_check_all_nets(ieee);
2882
2883 spin_lock_irqsave(&ieee->lock, flags);
2884
2885 if (ieee->state == RTLLIB_NOLINK)
2886 rtllib_start_scan(ieee);
2887 spin_unlock_irqrestore(&ieee->lock, flags);
2888
2889 ieee->beinretry = false;
2890 exit:
2891 up(&ieee->wx_sem);
2892 }
2893
2894 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2895 {
2896 u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2897
2898 struct sk_buff *skb;
2899 struct rtllib_probe_response *b;
2900 skb = rtllib_probe_resp(ieee, broadcast_addr);
2901
2902 if (!skb)
2903 return NULL;
2904
2905 b = (struct rtllib_probe_response *) skb->data;
2906 b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2907
2908 return skb;
2909
2910 }
2911
2912 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2913 {
2914 struct sk_buff *skb;
2915 struct rtllib_probe_response *b;
2916
2917 skb = rtllib_get_beacon_(ieee);
2918 if (!skb)
2919 return NULL;
2920
2921 b = (struct rtllib_probe_response *) skb->data;
2922 b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2923
2924 if (ieee->seq_ctrl[0] == 0xFFF)
2925 ieee->seq_ctrl[0] = 0;
2926 else
2927 ieee->seq_ctrl[0]++;
2928
2929 return skb;
2930 }
2931
2932 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2933 u8 shutdown)
2934 {
2935 rtllib_stop_scan_syncro(ieee);
2936 down(&ieee->wx_sem);
2937 rtllib_stop_protocol(ieee, shutdown);
2938 up(&ieee->wx_sem);
2939 }
2940
2941
2942 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2943 {
2944 if (!ieee->proto_started)
2945 return;
2946
2947 if (shutdown) {
2948 ieee->proto_started = 0;
2949 ieee->proto_stoppping = 1;
2950 if (ieee->rtllib_ips_leave != NULL)
2951 ieee->rtllib_ips_leave(ieee->dev);
2952 }
2953
2954 rtllib_stop_send_beacons(ieee);
2955 del_timer_sync(&ieee->associate_timer);
2956 cancel_delayed_work(&ieee->associate_retry_wq);
2957 cancel_delayed_work(&ieee->start_ibss_wq);
2958 cancel_delayed_work(&ieee->link_change_wq);
2959 rtllib_stop_scan(ieee);
2960
2961 if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2962 ieee->state = RTLLIB_NOLINK;
2963
2964 if (ieee->state == RTLLIB_LINKED) {
2965 if (ieee->iw_mode == IW_MODE_INFRA)
2966 SendDisassociation(ieee, 1, deauth_lv_ss);
2967 rtllib_disassociate(ieee);
2968 }
2969
2970 if (shutdown) {
2971 RemoveAllTS(ieee);
2972 ieee->proto_stoppping = 0;
2973 }
2974 kfree(ieee->assocreq_ies);
2975 ieee->assocreq_ies = NULL;
2976 ieee->assocreq_ies_len = 0;
2977 kfree(ieee->assocresp_ies);
2978 ieee->assocresp_ies = NULL;
2979 ieee->assocresp_ies_len = 0;
2980 }
2981
2982 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2983 {
2984 down(&ieee->wx_sem);
2985 rtllib_start_protocol(ieee);
2986 up(&ieee->wx_sem);
2987 }
2988
2989 void rtllib_start_protocol(struct rtllib_device *ieee)
2990 {
2991 short ch = 0;
2992 int i = 0;
2993
2994 rtllib_update_active_chan_map(ieee);
2995
2996 if (ieee->proto_started)
2997 return;
2998
2999 ieee->proto_started = 1;
3000
3001 if (ieee->current_network.channel == 0) {
3002 do {
3003 ch++;
3004 if (ch > MAX_CHANNEL_NUMBER)
3005 return; /* no channel found */
3006 } while (!ieee->active_channel_map[ch]);
3007 ieee->current_network.channel = ch;
3008 }
3009
3010 if (ieee->current_network.beacon_interval == 0)
3011 ieee->current_network.beacon_interval = 100;
3012
3013 for (i = 0; i < 17; i++) {
3014 ieee->last_rxseq_num[i] = -1;
3015 ieee->last_rxfrag_num[i] = -1;
3016 ieee->last_packet_time[i] = 0;
3017 }
3018
3019 if (ieee->UpdateBeaconInterruptHandler)
3020 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
3021
3022 ieee->wmm_acm = 0;
3023 /* if the user set the MAC of the ad-hoc cell and then
3024 * switch to managed mode, shall we make sure that association
3025 * attempts does not fail just because the user provide the essid
3026 * and the nic is still checking for the AP MAC ??
3027 */
3028 if (ieee->iw_mode == IW_MODE_INFRA) {
3029 rtllib_start_bss(ieee);
3030 } else if (ieee->iw_mode == IW_MODE_ADHOC) {
3031 if (ieee->UpdateBeaconInterruptHandler)
3032 ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
3033
3034 rtllib_start_ibss(ieee);
3035
3036 } else if (ieee->iw_mode == IW_MODE_MASTER) {
3037 rtllib_start_master_bss(ieee);
3038 } else if (ieee->iw_mode == IW_MODE_MONITOR) {
3039 rtllib_start_monitor_mode(ieee);
3040 }
3041 }
3042
3043 void rtllib_softmac_init(struct rtllib_device *ieee)
3044 {
3045 int i;
3046 memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
3047
3048 ieee->state = RTLLIB_NOLINK;
3049 for (i = 0; i < 5; i++)
3050 ieee->seq_ctrl[i] = 0;
3051 ieee->pDot11dInfo = kmalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
3052 if (!ieee->pDot11dInfo)
3053 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for DOT11D\n");
3054 memset(ieee->pDot11dInfo, 0, sizeof(struct rt_dot11d_info));
3055 ieee->LinkDetectInfo.SlotIndex = 0;
3056 ieee->LinkDetectInfo.SlotNum = 2;
3057 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
3058 ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
3059 ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
3060 ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
3061 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
3062 ieee->bIsAggregateFrame = false;
3063 ieee->assoc_id = 0;
3064 ieee->queue_stop = 0;
3065 ieee->scanning_continue = 0;
3066 ieee->softmac_features = 0;
3067 ieee->wap_set = 0;
3068 ieee->ssid_set = 0;
3069 ieee->proto_started = 0;
3070 ieee->proto_stoppping = 0;
3071 ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
3072 ieee->rate = 22;
3073 ieee->ps = RTLLIB_PS_DISABLED;
3074 ieee->sta_sleep = LPS_IS_WAKE;
3075
3076 ieee->Regdot11HTOperationalRateSet[0] = 0xff;
3077 ieee->Regdot11HTOperationalRateSet[1] = 0xff;
3078 ieee->Regdot11HTOperationalRateSet[4] = 0x01;
3079
3080 ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3081 ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3082 ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3083
3084 ieee->FirstIe_InScan = false;
3085 ieee->actscanning = false;
3086 ieee->beinretry = false;
3087 ieee->is_set_key = false;
3088 init_mgmt_queue(ieee);
3089
3090 ieee->sta_edca_param[0] = 0x0000A403;
3091 ieee->sta_edca_param[1] = 0x0000A427;
3092 ieee->sta_edca_param[2] = 0x005E4342;
3093 ieee->sta_edca_param[3] = 0x002F3262;
3094 ieee->aggregation = true;
3095 ieee->enable_rx_imm_BA = 1;
3096 ieee->tx_pending.txb = NULL;
3097
3098 _setup_timer(&ieee->associate_timer,
3099 rtllib_associate_abort_cb,
3100 (unsigned long) ieee);
3101
3102 _setup_timer(&ieee->beacon_timer,
3103 rtllib_send_beacon_cb,
3104 (unsigned long) ieee);
3105
3106
3107 ieee->wq = create_workqueue(DRV_NAME);
3108
3109 INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3110 (void *)rtllib_link_change_wq, ieee);
3111 INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3112 (void *)rtllib_start_ibss_wq, ieee);
3113 INIT_WORK_RSL(&ieee->associate_complete_wq,
3114 (void *)rtllib_associate_complete_wq, ieee);
3115 INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3116 (void *)rtllib_associate_procedure_wq, ieee);
3117 INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3118 (void *)rtllib_softmac_scan_wq, ieee);
3119 INIT_DELAYED_WORK_RSL(&ieee->softmac_hint11d_wq,
3120 (void *)rtllib_softmac_hint11d_wq, ieee);
3121 INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3122 (void *)rtllib_associate_retry_wq, ieee);
3123 INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3124 ieee);
3125
3126 sema_init(&ieee->wx_sem, 1);
3127 sema_init(&ieee->scan_sem, 1);
3128 sema_init(&ieee->ips_sem, 1);
3129
3130 spin_lock_init(&ieee->mgmt_tx_lock);
3131 spin_lock_init(&ieee->beacon_lock);
3132
3133 tasklet_init(&ieee->ps_task,
3134 (void(*)(unsigned long)) rtllib_sta_ps,
3135 (unsigned long)ieee);
3136
3137 }
3138
3139 void rtllib_softmac_free(struct rtllib_device *ieee)
3140 {
3141 down(&ieee->wx_sem);
3142 kfree(ieee->pDot11dInfo);
3143 ieee->pDot11dInfo = NULL;
3144 del_timer_sync(&ieee->associate_timer);
3145
3146 cancel_delayed_work(&ieee->associate_retry_wq);
3147 destroy_workqueue(ieee->wq);
3148 up(&ieee->wx_sem);
3149 }
3150
3151 /********************************************************
3152 * Start of WPA code. *
3153 * this is stolen from the ipw2200 driver *
3154 ********************************************************/
3155
3156
3157 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3158 {
3159 /* This is called when wpa_supplicant loads and closes the driver
3160 * interface. */
3161 printk(KERN_INFO "%s WPA\n", value ? "enabling" : "disabling");
3162 ieee->wpa_enabled = value;
3163 memset(ieee->ap_mac_addr, 0, 6);
3164 return 0;
3165 }
3166
3167
3168 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3169 int wpa_ie_len)
3170 {
3171 /* make sure WPA is enabled */
3172 rtllib_wpa_enable(ieee, 1);
3173
3174 rtllib_disassociate(ieee);
3175 }
3176
3177
3178 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3179 {
3180
3181 int ret = 0;
3182
3183 switch (command) {
3184 case IEEE_MLME_STA_DEAUTH:
3185 break;
3186
3187 case IEEE_MLME_STA_DISASSOC:
3188 rtllib_disassociate(ieee);
3189 break;
3190
3191 default:
3192 printk(KERN_INFO "Unknown MLME request: %d\n", command);
3193 ret = -EOPNOTSUPP;
3194 }
3195
3196 return ret;
3197 }
3198
3199
3200 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3201 struct ieee_param *param, int plen)
3202 {
3203 u8 *buf;
3204
3205 if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3206 (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3207 return -EINVAL;
3208
3209 if (param->u.wpa_ie.len) {
3210 buf = kmalloc(param->u.wpa_ie.len, GFP_KERNEL);
3211 if (buf == NULL)
3212 return -ENOMEM;
3213
3214 memcpy(buf, param->u.wpa_ie.data, param->u.wpa_ie.len);
3215 kfree(ieee->wpa_ie);
3216 ieee->wpa_ie = buf;
3217 ieee->wpa_ie_len = param->u.wpa_ie.len;
3218 } else {
3219 kfree(ieee->wpa_ie);
3220 ieee->wpa_ie = NULL;
3221 ieee->wpa_ie_len = 0;
3222 }
3223
3224 rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3225 return 0;
3226 }
3227
3228 #define AUTH_ALG_OPEN_SYSTEM 0x1
3229 #define AUTH_ALG_SHARED_KEY 0x2
3230 #define AUTH_ALG_LEAP 0x4
3231 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3232 {
3233
3234 struct rtllib_security sec = {
3235 .flags = SEC_AUTH_MODE,
3236 };
3237 int ret = 0;
3238
3239 if (value & AUTH_ALG_SHARED_KEY) {
3240 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3241 ieee->open_wep = 0;
3242 ieee->auth_mode = 1;
3243 } else if (value & AUTH_ALG_OPEN_SYSTEM) {
3244 sec.auth_mode = WLAN_AUTH_OPEN;
3245 ieee->open_wep = 1;
3246 ieee->auth_mode = 0;
3247 } else if (value & AUTH_ALG_LEAP) {
3248 sec.auth_mode = WLAN_AUTH_LEAP >> 6;
3249 ieee->open_wep = 1;
3250 ieee->auth_mode = 2;
3251 }
3252
3253
3254 if (ieee->set_security)
3255 ieee->set_security(ieee->dev, &sec);
3256
3257 return ret;
3258 }
3259
3260 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3261 {
3262 int ret = 0;
3263 unsigned long flags;
3264
3265 switch (name) {
3266 case IEEE_PARAM_WPA_ENABLED:
3267 ret = rtllib_wpa_enable(ieee, value);
3268 break;
3269
3270 case IEEE_PARAM_TKIP_COUNTERMEASURES:
3271 ieee->tkip_countermeasures = value;
3272 break;
3273
3274 case IEEE_PARAM_DROP_UNENCRYPTED:
3275 {
3276 /* HACK:
3277 *
3278 * wpa_supplicant calls set_wpa_enabled when the driver
3279 * is loaded and unloaded, regardless of if WPA is being
3280 * used. No other calls are made which can be used to
3281 * determine if encryption will be used or not prior to
3282 * association being expected. If encryption is not being
3283 * used, drop_unencrypted is set to false, else true -- we
3284 * can use this to determine if the CAP_PRIVACY_ON bit should
3285 * be set.
3286 */
3287 struct rtllib_security sec = {
3288 .flags = SEC_ENABLED,
3289 .enabled = value,
3290 };
3291 ieee->drop_unencrypted = value;
3292 /* We only change SEC_LEVEL for open mode. Others
3293 * are set by ipw_wpa_set_encryption.
3294 */
3295 if (!value) {
3296 sec.flags |= SEC_LEVEL;
3297 sec.level = SEC_LEVEL_0;
3298 } else {
3299 sec.flags |= SEC_LEVEL;
3300 sec.level = SEC_LEVEL_1;
3301 }
3302 if (ieee->set_security)
3303 ieee->set_security(ieee->dev, &sec);
3304 break;
3305 }
3306
3307 case IEEE_PARAM_PRIVACY_INVOKED:
3308 ieee->privacy_invoked = value;
3309 break;
3310
3311 case IEEE_PARAM_AUTH_ALGS:
3312 ret = rtllib_wpa_set_auth_algs(ieee, value);
3313 break;
3314
3315 case IEEE_PARAM_IEEE_802_1X:
3316 ieee->ieee802_1x = value;
3317 break;
3318 case IEEE_PARAM_WPAX_SELECT:
3319 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3320 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3321 break;
3322
3323 default:
3324 printk(KERN_INFO "Unknown WPA param: %d\n", name);
3325 ret = -EOPNOTSUPP;
3326 }
3327
3328 return ret;
3329 }
3330
3331 /* implementation borrowed from hostap driver */
3332 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3333 struct ieee_param *param, int param_len,
3334 u8 is_mesh)
3335 {
3336 int ret = 0;
3337 struct rtllib_crypto_ops *ops;
3338 struct rtllib_crypt_data **crypt;
3339
3340 struct rtllib_security sec = {
3341 .flags = 0,
3342 };
3343
3344 param->u.crypt.err = 0;
3345 param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3346
3347 if (param_len !=
3348 (int) ((char *) param->u.crypt.key - (char *) param) +
3349 param->u.crypt.key_len) {
3350 printk(KERN_INFO "Len mismatch %d, %d\n", param_len,
3351 param->u.crypt.key_len);
3352 return -EINVAL;
3353 }
3354 if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
3355 param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
3356 param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
3357 if (param->u.crypt.idx >= WEP_KEYS)
3358 return -EINVAL;
3359 crypt = &ieee->crypt[param->u.crypt.idx];
3360 } else {
3361 return -EINVAL;
3362 }
3363
3364 if (strcmp(param->u.crypt.alg, "none") == 0) {
3365 if (crypt) {
3366 sec.enabled = 0;
3367 sec.level = SEC_LEVEL_0;
3368 sec.flags |= SEC_ENABLED | SEC_LEVEL;
3369 rtllib_crypt_delayed_deinit(ieee, crypt);
3370 }
3371 goto done;
3372 }
3373 sec.enabled = 1;
3374 sec.flags |= SEC_ENABLED;
3375
3376 /* IPW HW cannot build TKIP MIC, host decryption still needed. */
3377 if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3378 strcmp(param->u.crypt.alg, "TKIP"))
3379 goto skip_host_crypt;
3380
3381 ops = rtllib_get_crypto_ops(param->u.crypt.alg);
3382 if (ops == NULL && strcmp(param->u.crypt.alg, "WEP") == 0) {
3383 request_module("rtllib_crypt_wep");
3384 ops = rtllib_get_crypto_ops(param->u.crypt.alg);
3385 } else if (ops == NULL && strcmp(param->u.crypt.alg, "TKIP") == 0) {
3386 request_module("rtllib_crypt_tkip");
3387 ops = rtllib_get_crypto_ops(param->u.crypt.alg);
3388 } else if (ops == NULL && strcmp(param->u.crypt.alg, "CCMP") == 0) {
3389 request_module("rtllib_crypt_ccmp");
3390 ops = rtllib_get_crypto_ops(param->u.crypt.alg);
3391 }
3392 if (ops == NULL) {
3393 printk(KERN_INFO "unknown crypto alg '%s'\n",
3394 param->u.crypt.alg);
3395 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3396 ret = -EINVAL;
3397 goto done;
3398 }
3399 if (*crypt == NULL || (*crypt)->ops != ops) {
3400 struct rtllib_crypt_data *new_crypt;
3401
3402 rtllib_crypt_delayed_deinit(ieee, crypt);
3403
3404 new_crypt = (struct rtllib_crypt_data *)
3405 kmalloc(sizeof(*new_crypt), GFP_KERNEL);
3406 if (new_crypt == NULL) {
3407 ret = -ENOMEM;
3408 goto done;
3409 }
3410 memset(new_crypt, 0, sizeof(struct rtllib_crypt_data));
3411 new_crypt->ops = ops;
3412 if (new_crypt->ops)
3413 new_crypt->priv =
3414 new_crypt->ops->init(param->u.crypt.idx);
3415
3416 if (new_crypt->priv == NULL) {
3417 kfree(new_crypt);
3418 param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3419 ret = -EINVAL;
3420 goto done;
3421 }
3422
3423 *crypt = new_crypt;
3424 }
3425
3426 if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3427 (*crypt)->ops->set_key(param->u.crypt.key,
3428 param->u.crypt.key_len, param->u.crypt.seq,
3429 (*crypt)->priv) < 0) {
3430 printk(KERN_INFO "key setting failed\n");
3431 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3432 ret = -EINVAL;
3433 goto done;
3434 }
3435
3436 skip_host_crypt:
3437 if (param->u.crypt.set_tx) {
3438 ieee->tx_keyidx = param->u.crypt.idx;
3439 sec.active_key = param->u.crypt.idx;
3440 sec.flags |= SEC_ACTIVE_KEY;
3441 } else
3442 sec.flags &= ~SEC_ACTIVE_KEY;
3443
3444 if (param->u.crypt.alg != NULL) {
3445 memcpy(sec.keys[param->u.crypt.idx],
3446 param->u.crypt.key,
3447 param->u.crypt.key_len);
3448 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3449 sec.flags |= (1 << param->u.crypt.idx);
3450
3451 if (strcmp(param->u.crypt.alg, "WEP") == 0) {
3452 sec.flags |= SEC_LEVEL;
3453 sec.level = SEC_LEVEL_1;
3454 } else if (strcmp(param->u.crypt.alg, "TKIP") == 0) {
3455 sec.flags |= SEC_LEVEL;
3456 sec.level = SEC_LEVEL_2;
3457 } else if (strcmp(param->u.crypt.alg, "CCMP") == 0) {
3458 sec.flags |= SEC_LEVEL;
3459 sec.level = SEC_LEVEL_3;
3460 }
3461 }
3462 done:
3463 if (ieee->set_security)
3464 ieee->set_security(ieee->dev, &sec);
3465
3466 /* Do not reset port if card is in Managed mode since resetting will
3467 * generate new IEEE 802.11 authentication which may end up in looping
3468 * with IEEE 802.1X. If your hardware requires a reset after WEP
3469 * configuration (for example... Prism2), implement the reset_port in
3470 * the callbacks structures used to initialize the 802.11 stack. */
3471 if (ieee->reset_on_keychange &&
3472 ieee->iw_mode != IW_MODE_INFRA &&
3473 ieee->reset_port &&
3474 ieee->reset_port(ieee->dev)) {
3475 printk(KERN_INFO "reset_port failed\n");
3476 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3477 return -EINVAL;
3478 }
3479
3480 return ret;
3481 }
3482
3483 inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon,
3484 struct rtllib_device *ieee, u16 asRsn)
3485 {
3486 struct sk_buff *skb;
3487 struct rtllib_disauth *disauth;
3488 int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3489
3490 skb = dev_alloc_skb(len);
3491 if (!skb)
3492 return NULL;
3493
3494 skb_reserve(skb, ieee->tx_headroom);
3495
3496 disauth = (struct rtllib_disauth *) skb_put(skb,
3497 sizeof(struct rtllib_disauth));
3498 disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3499 disauth->header.duration_id = 0;
3500
3501 memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN);
3502 memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3503 memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN);
3504
3505 disauth->reason = cpu_to_le16(asRsn);
3506 return skb;
3507 }
3508
3509 inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon,
3510 struct rtllib_device *ieee, u16 asRsn)
3511 {
3512 struct sk_buff *skb;
3513 struct rtllib_disassoc *disass;
3514 int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3515 skb = dev_alloc_skb(len);
3516
3517 if (!skb)
3518 return NULL;
3519
3520 skb_reserve(skb, ieee->tx_headroom);
3521
3522 disass = (struct rtllib_disassoc *) skb_put(skb,
3523 sizeof(struct rtllib_disassoc));
3524 disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3525 disass->header.duration_id = 0;
3526
3527 memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
3528 memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3529 memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);
3530
3531 disass->reason = cpu_to_le16(asRsn);
3532 return skb;
3533 }
3534
3535 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3536 {
3537 struct rtllib_network *beacon = &ieee->current_network;
3538 struct sk_buff *skb;
3539
3540 if (deauth)
3541 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3542 else
3543 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3544
3545 if (skb)
3546 softmac_mgmt_xmit(skb, ieee);
3547 }
3548
3549 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3550 {
3551 static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3552 static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3553 int wpa_ie_len = ieee->wpa_ie_len;
3554 struct rtllib_crypt_data *crypt;
3555 int encrypt;
3556
3557 crypt = ieee->crypt[ieee->tx_keyidx];
3558 encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3559 || (ieee->host_encrypt && crypt && crypt->ops &&
3560 (0 == strcmp(crypt->ops->name, "WEP")));
3561
3562 /* simply judge */
3563 if (encrypt && (wpa_ie_len == 0)) {
3564 return SEC_ALG_WEP;
3565 } else if ((wpa_ie_len != 0)) {
3566 if (((ieee->wpa_ie[0] == 0xdd) &&
3567 (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3568 ((ieee->wpa_ie[0] == 0x30) &&
3569 (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3570 return SEC_ALG_CCMP;
3571 else
3572 return SEC_ALG_TKIP;
3573 } else {
3574 return SEC_ALG_NONE;
3575 }
3576 }
3577
3578 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3579 u8 is_mesh)
3580 {
3581 struct ieee_param *param;
3582 int ret = 0;
3583
3584 down(&ieee->wx_sem);
3585
3586 if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3587 ret = -EINVAL;
3588 goto out;
3589 }
3590
3591 param = kmalloc(p->length, GFP_KERNEL);
3592 if (param == NULL) {
3593 ret = -ENOMEM;
3594 goto out;
3595 }
3596 if (copy_from_user(param, p->pointer, p->length)) {
3597 kfree(param);
3598 ret = -EFAULT;
3599 goto out;
3600 }
3601
3602 switch (param->cmd) {
3603 case IEEE_CMD_SET_WPA_PARAM:
3604 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3605 param->u.wpa_param.value);
3606 break;
3607
3608 case IEEE_CMD_SET_WPA_IE:
3609 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3610 break;
3611
3612 case IEEE_CMD_SET_ENCRYPTION:
3613 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3614 break;
3615
3616 case IEEE_CMD_MLME:
3617 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3618 param->u.mlme.reason_code);
3619 break;
3620
3621 default:
3622 printk(KERN_INFO "Unknown WPA supplicant request: %d\n",
3623 param->cmd);
3624 ret = -EOPNOTSUPP;
3625 break;
3626 }
3627
3628 if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3629 ret = -EFAULT;
3630
3631 kfree(param);
3632 out:
3633 up(&ieee->wx_sem);
3634
3635 return ret;
3636 }
3637
3638 void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3639 {
3640 u8 OpMode;
3641 u8 i;
3642 bool bFilterOutNonAssociatedBSSID = false;
3643
3644 rtllib->state = RTLLIB_NOLINK;
3645
3646 for (i = 0; i < 6; i++)
3647 rtllib->current_network.bssid[i] = 0x55;
3648
3649 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3650 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3651 rtllib->current_network.bssid);
3652 OpMode = RT_OP_MODE_NO_LINK;
3653 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3654 rtllib_stop_send_beacons(rtllib);
3655
3656 bFilterOutNonAssociatedBSSID = false;
3657 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3658 (u8 *)(&bFilterOutNonAssociatedBSSID));
3659 notify_wx_assoc_event(rtllib);
3660
3661 }
3662
3663 void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta,
3664 u8 asRsn)
3665 {
3666 u8 i;
3667 u8 OpMode;
3668
3669 RemovePeerTS(rtllib, asSta);
3670
3671
3672 if (memcpy(rtllib->current_network.bssid, asSta, 6) == NULL) {
3673 rtllib->state = RTLLIB_NOLINK;
3674
3675 for (i = 0; i < 6; i++)
3676 rtllib->current_network.bssid[i] = 0x22;
3677 OpMode = RT_OP_MODE_NO_LINK;
3678 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3679 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3680 (u8 *)(&OpMode));
3681 rtllib_disassociate(rtllib);
3682
3683 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3684 rtllib->current_network.bssid);
3685
3686 }
3687
3688 }
3689
3690 void
3691 rtllib_MgntDisconnectAP(
3692 struct rtllib_device *rtllib,
3693 u8 asRsn
3694 )
3695 {
3696 bool bFilterOutNonAssociatedBSSID = false;
3697
3698 bFilterOutNonAssociatedBSSID = false;
3699 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3700 (u8 *)(&bFilterOutNonAssociatedBSSID));
3701 rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3702 asRsn);
3703
3704 rtllib->state = RTLLIB_NOLINK;
3705 }
3706
3707 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3708 {
3709 if (rtllib->ps != RTLLIB_PS_DISABLED)
3710 rtllib->sta_wake_up(rtllib->dev);
3711
3712 if (rtllib->state == RTLLIB_LINKED) {
3713 if (rtllib->iw_mode == IW_MODE_ADHOC)
3714 rtllib_MgntDisconnectIBSS(rtllib);
3715 if (rtllib->iw_mode == IW_MODE_INFRA)
3716 rtllib_MgntDisconnectAP(rtllib, asRsn);
3717
3718 }
3719
3720 return true;
3721 }
3722
3723 void notify_wx_assoc_event(struct rtllib_device *ieee)
3724 {
3725 union iwreq_data wrqu;
3726
3727 if (ieee->cannot_notify)
3728 return;
3729
3730 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3731 if (ieee->state == RTLLIB_LINKED)
3732 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3733 ETH_ALEN);
3734 else {
3735
3736 printk(KERN_INFO "%s(): Tell user space disconnected\n",
3737 __func__);
3738 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
3739 }
3740 wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3741 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree