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Merge tag 'staging-3.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / rtl8192e / rtllib_softmac.c
1 /* IEEE 802.11 SoftMAC layer
2 * Copyright (c) 2005 Andrea Merello <andreamrl@tiscali.it>
3 *
4 * Mostly extracted from the rtl8180-sa2400 driver for the
5 * in-kernel generic ieee802.11 stack.
6 *
7 * Few lines might be stolen from other part of the rtllib
8 * stack. Copyright who own it's copyright
9 *
10 * WPA code stolen from the ipw2200 driver.
11 * Copyright who own it's copyright.
12 *
13 * released under the GPL
14 */
15
16
17 #include "rtllib.h"
18
19 #include <linux/random.h>
20 #include <linux/delay.h>
21 #include <linux/uaccess.h>
22 #include <linux/etherdevice.h>
23 #include "dot11d.h"
24
25 short rtllib_is_54g(struct rtllib_network *net)
26 {
27 return (net->rates_ex_len > 0) || (net->rates_len > 4);
28 }
29
30 short rtllib_is_shortslot(const struct rtllib_network *net)
31 {
32 return net->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME;
33 }
34
35 /* returns the total length needed for placing the RATE MFIE
36 * tag and the EXTENDED RATE MFIE tag if needed.
37 * It encludes two bytes per tag for the tag itself and its len
38 */
39 static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
40 {
41 unsigned int rate_len = 0;
42
43 if (ieee->modulation & RTLLIB_CCK_MODULATION)
44 rate_len = RTLLIB_CCK_RATE_LEN + 2;
45
46 if (ieee->modulation & RTLLIB_OFDM_MODULATION)
47
48 rate_len += RTLLIB_OFDM_RATE_LEN + 2;
49
50 return rate_len;
51 }
52
53 /* place the MFIE rate, tag to the memory (double) pointed.
54 * Then it updates the pointer so that
55 * it points after the new MFIE tag added.
56 */
57 static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
58 {
59 u8 *tag = *tag_p;
60
61 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
62 *tag++ = MFIE_TYPE_RATES;
63 *tag++ = 4;
64 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
65 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
66 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
67 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
68 }
69
70 /* We may add an option for custom rates that specific HW
71 * might support */
72 *tag_p = tag;
73 }
74
75 static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p)
76 {
77 u8 *tag = *tag_p;
78
79 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
80 *tag++ = MFIE_TYPE_RATES_EX;
81 *tag++ = 8;
82 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB;
83 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB;
84 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB;
85 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB;
86 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB;
87 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB;
88 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB;
89 *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB;
90 }
91 /* We may add an option for custom rates that specific HW might
92 * support */
93 *tag_p = tag;
94 }
95
96 static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
97 {
98 u8 *tag = *tag_p;
99
100 *tag++ = MFIE_TYPE_GENERIC;
101 *tag++ = 7;
102 *tag++ = 0x00;
103 *tag++ = 0x50;
104 *tag++ = 0xf2;
105 *tag++ = 0x02;
106 *tag++ = 0x00;
107 *tag++ = 0x01;
108 *tag++ = MAX_SP_Len;
109 *tag_p = tag;
110 }
111
112 void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
113 {
114 u8 *tag = *tag_p;
115
116 *tag++ = MFIE_TYPE_GENERIC;
117 *tag++ = 7;
118 *tag++ = 0x00;
119 *tag++ = 0xe0;
120 *tag++ = 0x4c;
121 *tag++ = 0x01;
122 *tag++ = 0x02;
123 *tag++ = 0x11;
124 *tag++ = 0x00;
125
126 *tag_p = tag;
127 printk(KERN_ALERT "This is enable turbo mode IE process\n");
128 }
129
130 static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
131 {
132 int nh;
133 nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
134
135 /*
136 * if the queue is full but we have newer frames then
137 * just overwrites the oldest.
138 *
139 * if (nh == ieee->mgmt_queue_tail)
140 * return -1;
141 */
142 ieee->mgmt_queue_head = nh;
143 ieee->mgmt_queue_ring[nh] = skb;
144
145 }
146
147 static struct sk_buff *dequeue_mgmt(struct rtllib_device *ieee)
148 {
149 struct sk_buff *ret;
150
151 if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head)
152 return NULL;
153
154 ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail];
155
156 ieee->mgmt_queue_tail =
157 (ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM;
158
159 return ret;
160 }
161
162 static void init_mgmt_queue(struct rtllib_device *ieee)
163 {
164 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
165 }
166
167
168 u8
169 MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
170 {
171 u16 i;
172 u8 QueryRate = 0;
173 u8 BasicRate;
174
175
176 for (i = 0; i < ieee->current_network.rates_len; i++) {
177 BasicRate = ieee->current_network.rates[i]&0x7F;
178 if (!rtllib_is_cck_rate(BasicRate)) {
179 if (QueryRate == 0) {
180 QueryRate = BasicRate;
181 } else {
182 if (BasicRate < QueryRate)
183 QueryRate = BasicRate;
184 }
185 }
186 }
187
188 if (QueryRate == 0) {
189 QueryRate = 12;
190 printk(KERN_INFO "No BasicRate found!!\n");
191 }
192 return QueryRate;
193 }
194
195 u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
196 {
197 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
198 u8 rate;
199
200 if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
201 rate = 0x0c;
202 else
203 rate = ieee->basic_rate & 0x7f;
204
205 if (rate == 0) {
206 if (ieee->mode == IEEE_A ||
207 ieee->mode == IEEE_N_5G ||
208 (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
209 rate = 0x0c;
210 else
211 rate = 0x02;
212 }
213
214 return rate;
215 }
216
217 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
218 {
219 unsigned long flags;
220 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
221 struct rtllib_hdr_3addr *header =
222 (struct rtllib_hdr_3addr *) skb->data;
223
224 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
225 spin_lock_irqsave(&ieee->lock, flags);
226
227 /* called with 2nd param 0, no mgmt lock required */
228 rtllib_sta_wakeup(ieee, 0);
229
230 if (header->frame_ctl == RTLLIB_STYPE_BEACON)
231 tcb_desc->queue_index = BEACON_QUEUE;
232 else
233 tcb_desc->queue_index = MGNT_QUEUE;
234
235 if (ieee->disable_mgnt_queue)
236 tcb_desc->queue_index = HIGH_QUEUE;
237
238 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
239 tcb_desc->RATRIndex = 7;
240 tcb_desc->bTxDisableRateFallBack = 1;
241 tcb_desc->bTxUseDriverAssingedRate = 1;
242 if (single) {
243 if (ieee->queue_stop) {
244 enqueue_mgmt(ieee, skb);
245 } else {
246 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
247
248 if (ieee->seq_ctrl[0] == 0xFFF)
249 ieee->seq_ctrl[0] = 0;
250 else
251 ieee->seq_ctrl[0]++;
252
253 /* avoid watchdog triggers */
254 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
255 ieee->basic_rate);
256 }
257
258 spin_unlock_irqrestore(&ieee->lock, flags);
259 } else {
260 spin_unlock_irqrestore(&ieee->lock, flags);
261 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
262
263 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
264
265 if (ieee->seq_ctrl[0] == 0xFFF)
266 ieee->seq_ctrl[0] = 0;
267 else
268 ieee->seq_ctrl[0]++;
269
270 /* check whether the managed packet queued greater than 5 */
271 if (!ieee->check_nic_enough_desc(ieee->dev, tcb_desc->queue_index) ||
272 (skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) != 0) ||
273 (ieee->queue_stop)) {
274 /* insert the skb packet to the management queue */
275 /* as for the completion function, it does not need
276 * to check it any more.
277 * */
278 printk(KERN_INFO "%s():insert to waitqueue, queue_index"
279 ":%d!\n", __func__, tcb_desc->queue_index);
280 skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
281 skb);
282 } else {
283 ieee->softmac_hard_start_xmit(skb, ieee->dev);
284 }
285 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
286 }
287 }
288
289 inline void softmac_ps_mgmt_xmit(struct sk_buff *skb,
290 struct rtllib_device *ieee)
291 {
292 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
293 struct rtllib_hdr_3addr *header =
294 (struct rtllib_hdr_3addr *) skb->data;
295 u16 fc, type, stype;
296 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
297
298 fc = header->frame_ctl;
299 type = WLAN_FC_GET_TYPE(fc);
300 stype = WLAN_FC_GET_STYPE(fc);
301
302
303 if (stype != RTLLIB_STYPE_PSPOLL)
304 tcb_desc->queue_index = MGNT_QUEUE;
305 else
306 tcb_desc->queue_index = HIGH_QUEUE;
307
308 if (ieee->disable_mgnt_queue)
309 tcb_desc->queue_index = HIGH_QUEUE;
310
311
312 tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
313 tcb_desc->RATRIndex = 7;
314 tcb_desc->bTxDisableRateFallBack = 1;
315 tcb_desc->bTxUseDriverAssingedRate = 1;
316 if (single) {
317 if (type != RTLLIB_FTYPE_CTL) {
318 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
319
320 if (ieee->seq_ctrl[0] == 0xFFF)
321 ieee->seq_ctrl[0] = 0;
322 else
323 ieee->seq_ctrl[0]++;
324
325 }
326 /* avoid watchdog triggers */
327 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
328 ieee->basic_rate);
329
330 } else {
331 if (type != RTLLIB_FTYPE_CTL) {
332 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
333
334 if (ieee->seq_ctrl[0] == 0xFFF)
335 ieee->seq_ctrl[0] = 0;
336 else
337 ieee->seq_ctrl[0]++;
338 }
339 ieee->softmac_hard_start_xmit(skb, ieee->dev);
340
341 }
342 }
343
344 inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
345 {
346 unsigned int len, rate_len;
347 u8 *tag;
348 struct sk_buff *skb;
349 struct rtllib_probe_request *req;
350
351 len = ieee->current_network.ssid_len;
352
353 rate_len = rtllib_MFIE_rate_len(ieee);
354
355 skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
356 2 + len + rate_len + ieee->tx_headroom);
357
358 if (!skb)
359 return NULL;
360
361 skb_reserve(skb, ieee->tx_headroom);
362
363 req = (struct rtllib_probe_request *) skb_put(skb,
364 sizeof(struct rtllib_probe_request));
365 req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
366 req->header.duration_id = 0;
367
368 memset(req->header.addr1, 0xff, ETH_ALEN);
369 memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
370 memset(req->header.addr3, 0xff, ETH_ALEN);
371
372 tag = (u8 *) skb_put(skb, len + 2 + rate_len);
373
374 *tag++ = MFIE_TYPE_SSID;
375 *tag++ = len;
376 memcpy(tag, ieee->current_network.ssid, len);
377 tag += len;
378
379 rtllib_MFIE_Brate(ieee, &tag);
380 rtllib_MFIE_Grate(ieee, &tag);
381
382 return skb;
383 }
384
385 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
386
387 static void rtllib_send_beacon(struct rtllib_device *ieee)
388 {
389 struct sk_buff *skb;
390 if (!ieee->ieee_up)
391 return;
392 skb = rtllib_get_beacon_(ieee);
393
394 if (skb) {
395 softmac_mgmt_xmit(skb, ieee);
396 ieee->softmac_stats.tx_beacons++;
397 }
398
399 if (ieee->beacon_txing && ieee->ieee_up)
400 mod_timer(&ieee->beacon_timer, jiffies +
401 (MSECS(ieee->current_network.beacon_interval - 5)));
402 }
403
404
405 static void rtllib_send_beacon_cb(unsigned long _ieee)
406 {
407 struct rtllib_device *ieee =
408 (struct rtllib_device *) _ieee;
409 unsigned long flags;
410
411 spin_lock_irqsave(&ieee->beacon_lock, flags);
412 rtllib_send_beacon(ieee);
413 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
414 }
415
416 /*
417 * Description:
418 * Enable network monitor mode, all rx packets will be received.
419 */
420 void rtllib_EnableNetMonitorMode(struct net_device *dev,
421 bool bInitState)
422 {
423 struct rtllib_device *ieee = netdev_priv_rsl(dev);
424
425 printk(KERN_INFO "========>Enter Monitor Mode\n");
426
427 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
428 }
429
430
431 /*
432 * Description:
433 * Disable network network monitor mode, only packets destinated to
434 * us will be received.
435 */
436 void rtllib_DisableNetMonitorMode(struct net_device *dev,
437 bool bInitState)
438 {
439 struct rtllib_device *ieee = netdev_priv_rsl(dev);
440
441 printk(KERN_INFO "========>Exit Monitor Mode\n");
442
443 ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
444 }
445
446
447 /*
448 * Description:
449 * This enables the specialized promiscuous mode required by Intel.
450 * In this mode, Intel intends to hear traffics from/to other STAs in the
451 * same BSS. Therefore we don't have to disable checking BSSID and we only need
452 * to allow all dest. BUT: if we enable checking BSSID then we can't recv
453 * packets from other STA.
454 */
455 void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
456 bool bInitState)
457 {
458 bool bFilterOutNonAssociatedBSSID = false;
459
460 struct rtllib_device *ieee = netdev_priv_rsl(dev);
461
462 printk(KERN_INFO "========>Enter Intel Promiscuous Mode\n");
463
464 ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
465 ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
466 (u8 *)&bFilterOutNonAssociatedBSSID);
467
468 ieee->bNetPromiscuousMode = true;
469 }
470 EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode);
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 EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode);
494
495 static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh)
496 {
497 struct sk_buff *skb;
498 skb = rtllib_probe_req(ieee);
499 if (skb) {
500 softmac_mgmt_xmit(skb, ieee);
501 ieee->softmac_stats.tx_probe_rq++;
502 }
503 }
504
505
506 void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh)
507 {
508 if (ieee->active_scan && (ieee->softmac_features &
509 IEEE_SOFTMAC_PROBERQ)) {
510 rtllib_send_probe(ieee, 0);
511 rtllib_send_probe(ieee, 0);
512 }
513 }
514
515 static void rtllib_softmac_hint11d_wq(void *data)
516 {
517 }
518
519 void rtllib_update_active_chan_map(struct rtllib_device *ieee)
520 {
521 memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map,
522 MAX_CHANNEL_NUMBER+1);
523 }
524
525 /* this performs syncro scan blocking the caller until all channels
526 * in the allowed channel map has been checked.
527 */
528 void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
529 {
530 union iwreq_data wrqu;
531 short ch = 0;
532
533 rtllib_update_active_chan_map(ieee);
534
535 ieee->be_scan_inprogress = true;
536
537 down(&ieee->scan_sem);
538
539 while (1) {
540 do {
541 ch++;
542 if (ch > MAX_CHANNEL_NUMBER)
543 goto out; /* scan completed */
544 } while (!ieee->active_channel_map[ch]);
545
546 /* this fuction can be called in two situations
547 * 1- We have switched to ad-hoc mode and we are
548 * performing a complete syncro scan before conclude
549 * there are no interesting cell and to create a
550 * new one. In this case the link state is
551 * RTLLIB_NOLINK until we found an interesting cell.
552 * If so the ieee8021_new_net, called by the RX path
553 * will set the state to RTLLIB_LINKED, so we stop
554 * scanning
555 * 2- We are linked and the root uses run iwlist scan.
556 * So we switch to RTLLIB_LINKED_SCANNING to remember
557 * that we are still logically linked (not interested in
558 * new network events, despite for updating the net list,
559 * but we are temporarly 'unlinked' as the driver shall
560 * not filter RX frames and the channel is changing.
561 * So the only situation in which are interested is to check
562 * if the state become LINKED because of the #1 situation
563 */
564
565 if (ieee->state == RTLLIB_LINKED)
566 goto out;
567 if (ieee->sync_scan_hurryup) {
568 printk(KERN_INFO "============>sync_scan_hurryup out\n");
569 goto out;
570 }
571
572 ieee->set_chan(ieee->dev, ch);
573 if (ieee->active_channel_map[ch] == 1)
574 rtllib_send_probe_requests(ieee, 0);
575
576 /* this prevent excessive time wait when we
577 * need to wait for a syncro scan to end..
578 */
579 msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME);
580 }
581 out:
582 ieee->actscanning = false;
583 ieee->sync_scan_hurryup = 0;
584
585 if (ieee->state >= RTLLIB_LINKED) {
586 if (IS_DOT11D_ENABLE(ieee))
587 DOT11D_ScanComplete(ieee);
588 }
589 up(&ieee->scan_sem);
590
591 ieee->be_scan_inprogress = false;
592
593 memset(&wrqu, 0, sizeof(wrqu));
594 wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
595 }
596
597 static void rtllib_softmac_scan_wq(void *data)
598 {
599 struct rtllib_device *ieee = container_of_dwork_rsl(data,
600 struct rtllib_device, softmac_scan_wq);
601 u8 last_channel = ieee->current_network.channel;
602
603 rtllib_update_active_chan_map(ieee);
604
605 if (!ieee->ieee_up)
606 return;
607 if (rtllib_act_scanning(ieee, true) == true)
608 return;
609
610 down(&ieee->scan_sem);
611
612 if (ieee->eRFPowerState == eRfOff) {
613 printk(KERN_INFO "======>%s():rf state is eRfOff, return\n",
614 __func__);
615 goto out1;
616 }
617
618 do {
619 ieee->current_network.channel =
620 (ieee->current_network.channel + 1) %
621 MAX_CHANNEL_NUMBER;
622 if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) {
623 if (!ieee->active_channel_map[ieee->current_network.channel])
624 ieee->current_network.channel = 6;
625 goto out; /* no good chans */
626 }
627 } while (!ieee->active_channel_map[ieee->current_network.channel]);
628
629 if (ieee->scanning_continue == 0)
630 goto out;
631
632 ieee->set_chan(ieee->dev, ieee->current_network.channel);
633
634 if (ieee->active_channel_map[ieee->current_network.channel] == 1)
635 rtllib_send_probe_requests(ieee, 0);
636
637 queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq,
638 MSECS(RTLLIB_SOFTMAC_SCAN_TIME));
639
640 up(&ieee->scan_sem);
641 return;
642
643 out:
644 if (IS_DOT11D_ENABLE(ieee))
645 DOT11D_ScanComplete(ieee);
646 ieee->current_network.channel = last_channel;
647
648 out1:
649 ieee->actscanning = false;
650 ieee->scan_watch_dog = 0;
651 ieee->scanning_continue = 0;
652 up(&ieee->scan_sem);
653 }
654
655
656
657 static void rtllib_beacons_start(struct rtllib_device *ieee)
658 {
659 unsigned long flags;
660 spin_lock_irqsave(&ieee->beacon_lock, flags);
661
662 ieee->beacon_txing = 1;
663 rtllib_send_beacon(ieee);
664
665 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
666 }
667
668 static void rtllib_beacons_stop(struct rtllib_device *ieee)
669 {
670 unsigned long flags;
671
672 spin_lock_irqsave(&ieee->beacon_lock, flags);
673
674 ieee->beacon_txing = 0;
675 del_timer_sync(&ieee->beacon_timer);
676
677 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
678
679 }
680
681
682 void rtllib_stop_send_beacons(struct rtllib_device *ieee)
683 {
684 if (ieee->stop_send_beacons)
685 ieee->stop_send_beacons(ieee->dev);
686 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
687 rtllib_beacons_stop(ieee);
688 }
689 EXPORT_SYMBOL(rtllib_stop_send_beacons);
690
691
692 void rtllib_start_send_beacons(struct rtllib_device *ieee)
693 {
694 if (ieee->start_send_beacons)
695 ieee->start_send_beacons(ieee->dev);
696 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
697 rtllib_beacons_start(ieee);
698 }
699 EXPORT_SYMBOL(rtllib_start_send_beacons);
700
701
702 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
703 {
704 down(&ieee->scan_sem);
705 ieee->scan_watch_dog = 0;
706 if (ieee->scanning_continue == 1) {
707 ieee->scanning_continue = 0;
708 ieee->actscanning = 0;
709
710 cancel_delayed_work(&ieee->softmac_scan_wq);
711 }
712
713 up(&ieee->scan_sem);
714 }
715
716 void rtllib_stop_scan(struct rtllib_device *ieee)
717 {
718 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
719 rtllib_softmac_stop_scan(ieee);
720 } else {
721 if (ieee->rtllib_stop_hw_scan)
722 ieee->rtllib_stop_hw_scan(ieee->dev);
723 }
724 }
725 EXPORT_SYMBOL(rtllib_stop_scan);
726
727 void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
728 {
729 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
730 ieee->sync_scan_hurryup = 1;
731 } else {
732 if (ieee->rtllib_stop_hw_scan)
733 ieee->rtllib_stop_hw_scan(ieee->dev);
734 }
735 }
736 EXPORT_SYMBOL(rtllib_stop_scan_syncro);
737
738 bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
739 {
740 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
741 if (sync_scan)
742 return ieee->be_scan_inprogress;
743 else
744 return ieee->actscanning || ieee->be_scan_inprogress;
745 } else {
746 return test_bit(STATUS_SCANNING, &ieee->status);
747 }
748 }
749 EXPORT_SYMBOL(rtllib_act_scanning);
750
751 /* called with ieee->lock held */
752 static void rtllib_start_scan(struct rtllib_device *ieee)
753 {
754 RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
755 if (ieee->rtllib_ips_leave_wq != NULL)
756 ieee->rtllib_ips_leave_wq(ieee->dev);
757
758 if (IS_DOT11D_ENABLE(ieee)) {
759 if (IS_COUNTRY_IE_VALID(ieee))
760 RESET_CIE_WATCHDOG(ieee);
761 }
762 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
763 if (ieee->scanning_continue == 0) {
764 ieee->actscanning = true;
765 ieee->scanning_continue = 1;
766 queue_delayed_work_rsl(ieee->wq,
767 &ieee->softmac_scan_wq, 0);
768 }
769 } else {
770 if (ieee->rtllib_start_hw_scan)
771 ieee->rtllib_start_hw_scan(ieee->dev);
772 }
773 }
774
775 /* called with wx_sem held */
776 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
777 {
778 if (IS_DOT11D_ENABLE(ieee)) {
779 if (IS_COUNTRY_IE_VALID(ieee))
780 RESET_CIE_WATCHDOG(ieee);
781 }
782 ieee->sync_scan_hurryup = 0;
783 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
784 rtllib_softmac_scan_syncro(ieee, is_mesh);
785 } else {
786 if (ieee->rtllib_start_hw_scan)
787 ieee->rtllib_start_hw_scan(ieee->dev);
788 }
789 }
790 EXPORT_SYMBOL(rtllib_start_scan_syncro);
791
792 inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon,
793 struct rtllib_device *ieee, int challengelen, u8 *daddr)
794 {
795 struct sk_buff *skb;
796 struct rtllib_authentication *auth;
797 int len = 0;
798 len = sizeof(struct rtllib_authentication) + challengelen +
799 ieee->tx_headroom + 4;
800 skb = dev_alloc_skb(len);
801
802 if (!skb)
803 return NULL;
804
805 skb_reserve(skb, ieee->tx_headroom);
806
807 auth = (struct rtllib_authentication *)
808 skb_put(skb, sizeof(struct rtllib_authentication));
809
810 auth->header.frame_ctl = RTLLIB_STYPE_AUTH;
811 if (challengelen)
812 auth->header.frame_ctl |= RTLLIB_FCTL_WEP;
813
814 auth->header.duration_id = 0x013a;
815 memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN);
816 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
817 memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN);
818 if (ieee->auth_mode == 0)
819 auth->algorithm = WLAN_AUTH_OPEN;
820 else if (ieee->auth_mode == 1)
821 auth->algorithm = WLAN_AUTH_SHARED_KEY;
822 else if (ieee->auth_mode == 2)
823 auth->algorithm = WLAN_AUTH_OPEN;
824 auth->transaction = cpu_to_le16(ieee->associate_seq);
825 ieee->associate_seq++;
826
827 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
828
829 return skb;
830 }
831
832 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, u8 *dest)
833 {
834 u8 *tag;
835 int beacon_size;
836 struct rtllib_probe_response *beacon_buf;
837 struct sk_buff *skb = NULL;
838 int encrypt;
839 int atim_len, erp_len;
840 struct lib80211_crypt_data *crypt;
841
842 char *ssid = ieee->current_network.ssid;
843 int ssid_len = ieee->current_network.ssid_len;
844 int rate_len = ieee->current_network.rates_len+2;
845 int rate_ex_len = ieee->current_network.rates_ex_len;
846 int wpa_ie_len = ieee->wpa_ie_len;
847 u8 erpinfo_content = 0;
848
849 u8 *tmp_ht_cap_buf = NULL;
850 u8 tmp_ht_cap_len = 0;
851 u8 *tmp_ht_info_buf = NULL;
852 u8 tmp_ht_info_len = 0;
853 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
854 u8 *tmp_generic_ie_buf = NULL;
855 u8 tmp_generic_ie_len = 0;
856
857 if (rate_ex_len > 0)
858 rate_ex_len += 2;
859
860 if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
861 atim_len = 4;
862 else
863 atim_len = 0;
864
865 if ((ieee->current_network.mode == IEEE_G) ||
866 (ieee->current_network.mode == IEEE_N_24G &&
867 ieee->pHTInfo->bCurSuppCCK)) {
868 erp_len = 3;
869 erpinfo_content = 0;
870 if (ieee->current_network.buseprotection)
871 erpinfo_content |= ERP_UseProtection;
872 } else
873 erp_len = 0;
874
875 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
876 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
877 ((0 == strcmp(crypt->ops->name, "R-WEP") || wpa_ie_len));
878 if (ieee->pHTInfo->bCurrentHTSupport) {
879 tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
880 tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
881 tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
882 tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
883 HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
884 &tmp_ht_cap_len, encrypt, false);
885 HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
886 encrypt);
887
888 if (pHTInfo->bRegRT2RTAggregation) {
889 tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
890 tmp_generic_ie_len =
891 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
892 HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
893 &tmp_generic_ie_len);
894 }
895 }
896
897 beacon_size = sizeof(struct rtllib_probe_response)+2+
898 ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
899 + wpa_ie_len + ieee->tx_headroom;
900 skb = dev_alloc_skb(beacon_size);
901 if (!skb)
902 return NULL;
903
904 skb_reserve(skb, ieee->tx_headroom);
905
906 beacon_buf = (struct rtllib_probe_response *) skb_put(skb,
907 (beacon_size - ieee->tx_headroom));
908 memcpy(beacon_buf->header.addr1, dest, ETH_ALEN);
909 memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
910 memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN);
911
912 beacon_buf->header.duration_id = 0;
913 beacon_buf->beacon_interval =
914 cpu_to_le16(ieee->current_network.beacon_interval);
915 beacon_buf->capability =
916 cpu_to_le16(ieee->current_network.capability &
917 WLAN_CAPABILITY_IBSS);
918 beacon_buf->capability |=
919 cpu_to_le16(ieee->current_network.capability &
920 WLAN_CAPABILITY_SHORT_PREAMBLE);
921
922 if (ieee->short_slot && (ieee->current_network.capability &
923 WLAN_CAPABILITY_SHORT_SLOT_TIME))
924 cpu_to_le16((beacon_buf->capability |=
925 WLAN_CAPABILITY_SHORT_SLOT_TIME));
926
927 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
928 if (encrypt)
929 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
930
931
932 beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
933 beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
934 beacon_buf->info_element[0].len = ssid_len;
935
936 tag = (u8 *) beacon_buf->info_element[0].data;
937
938 memcpy(tag, ssid, ssid_len);
939
940 tag += ssid_len;
941
942 *(tag++) = MFIE_TYPE_RATES;
943 *(tag++) = rate_len-2;
944 memcpy(tag, ieee->current_network.rates, rate_len-2);
945 tag += rate_len-2;
946
947 *(tag++) = MFIE_TYPE_DS_SET;
948 *(tag++) = 1;
949 *(tag++) = ieee->current_network.channel;
950
951 if (atim_len) {
952 u16 val16;
953 *(tag++) = MFIE_TYPE_IBSS_SET;
954 *(tag++) = 2;
955 val16 = cpu_to_le16(ieee->current_network.atim_window);
956 memcpy((u8 *)tag, (u8 *)&val16, 2);
957 tag += 2;
958 }
959
960 if (erp_len) {
961 *(tag++) = MFIE_TYPE_ERP;
962 *(tag++) = 1;
963 *(tag++) = erpinfo_content;
964 }
965 if (rate_ex_len) {
966 *(tag++) = MFIE_TYPE_RATES_EX;
967 *(tag++) = rate_ex_len-2;
968 memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
969 tag += rate_ex_len-2;
970 }
971
972 if (wpa_ie_len) {
973 if (ieee->iw_mode == IW_MODE_ADHOC)
974 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
975 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
976 tag += ieee->wpa_ie_len;
977 }
978 return skb;
979 }
980
981 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
982 {
983 struct sk_buff *skb;
984 u8 *tag;
985
986 struct lib80211_crypt_data *crypt;
987 struct rtllib_assoc_response_frame *assoc;
988 short encrypt;
989
990 unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
991 int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
992 ieee->tx_headroom;
993
994 skb = dev_alloc_skb(len);
995
996 if (!skb)
997 return NULL;
998
999 skb_reserve(skb, ieee->tx_headroom);
1000
1001 assoc = (struct rtllib_assoc_response_frame *)
1002 skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
1003
1004 assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
1005 memcpy(assoc->header.addr1, dest, ETH_ALEN);
1006 memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1007 memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1008 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
1009 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
1010
1011
1012 if (ieee->short_slot)
1013 assoc->capability |=
1014 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1015
1016 if (ieee->host_encrypt)
1017 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1018 else
1019 crypt = NULL;
1020
1021 encrypt = (crypt && crypt->ops);
1022
1023 if (encrypt)
1024 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1025
1026 assoc->status = 0;
1027 assoc->aid = cpu_to_le16(ieee->assoc_id);
1028 if (ieee->assoc_id == 0x2007)
1029 ieee->assoc_id = 0;
1030 else
1031 ieee->assoc_id++;
1032
1033 tag = (u8 *) skb_put(skb, rate_len);
1034 rtllib_MFIE_Brate(ieee, &tag);
1035 rtllib_MFIE_Grate(ieee, &tag);
1036
1037 return skb;
1038 }
1039
1040 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1041 u8 *dest)
1042 {
1043 struct sk_buff *skb = NULL;
1044 struct rtllib_authentication *auth;
1045 int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1046 skb = dev_alloc_skb(len);
1047 if (!skb)
1048 return NULL;
1049
1050 skb->len = sizeof(struct rtllib_authentication);
1051
1052 skb_reserve(skb, ieee->tx_headroom);
1053
1054 auth = (struct rtllib_authentication *)
1055 skb_put(skb, sizeof(struct rtllib_authentication));
1056
1057 auth->status = cpu_to_le16(status);
1058 auth->transaction = cpu_to_le16(2);
1059 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1060
1061 memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1062 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1063 memcpy(auth->header.addr1, dest, ETH_ALEN);
1064 auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1065 return skb;
1066
1067
1068 }
1069
1070 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1071 {
1072 struct sk_buff *skb;
1073 struct rtllib_hdr_3addr *hdr;
1074
1075 skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1076 if (!skb)
1077 return NULL;
1078
1079 skb_reserve(skb, ieee->tx_headroom);
1080
1081 hdr = (struct rtllib_hdr_3addr *)skb_put(skb,
1082 sizeof(struct rtllib_hdr_3addr));
1083
1084 memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN);
1085 memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN);
1086 memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN);
1087
1088 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1089 RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1090 (pwr ? RTLLIB_FCTL_PM : 0));
1091
1092 return skb;
1093
1094
1095 }
1096
1097 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1098 {
1099 struct sk_buff *skb;
1100 struct rtllib_pspoll_hdr *hdr;
1101
1102 skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1103 if (!skb)
1104 return NULL;
1105
1106 skb_reserve(skb, ieee->tx_headroom);
1107
1108 hdr = (struct rtllib_pspoll_hdr *)skb_put(skb,
1109 sizeof(struct rtllib_pspoll_hdr));
1110
1111 memcpy(hdr->bssid, ieee->current_network.bssid, ETH_ALEN);
1112 memcpy(hdr->ta, ieee->dev->dev_addr, ETH_ALEN);
1113
1114 hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1115 hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1116 RTLLIB_FCTL_PM);
1117
1118 return skb;
1119
1120 }
1121
1122 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1123 {
1124 struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1125
1126 if (buf)
1127 softmac_mgmt_xmit(buf, ieee);
1128 }
1129
1130
1131 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1132 {
1133 struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1134
1135 if (buf)
1136 softmac_mgmt_xmit(buf, ieee);
1137 }
1138
1139
1140 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1141 {
1142
1143 struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1144 if (buf)
1145 softmac_mgmt_xmit(buf, ieee);
1146 }
1147
1148
1149 inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1150 {
1151 int i = 0;
1152
1153 do {
1154 if ((ieee->PMKIDList[i].bUsed) &&
1155 (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1156 break;
1157 else
1158 i++;
1159 } while (i < NUM_PMKID_CACHE);
1160
1161 if (i == NUM_PMKID_CACHE)
1162 i = -1;
1163 return i;
1164 }
1165
1166 inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon,
1167 struct rtllib_device *ieee)
1168 {
1169 struct sk_buff *skb;
1170 struct rtllib_assoc_request_frame *hdr;
1171 u8 *tag, *ies;
1172 int i;
1173 u8 *ht_cap_buf = NULL;
1174 u8 ht_cap_len = 0;
1175 u8 *realtek_ie_buf = NULL;
1176 u8 realtek_ie_len = 0;
1177 int wpa_ie_len = ieee->wpa_ie_len;
1178 int wps_ie_len = ieee->wps_ie_len;
1179 unsigned int ckip_ie_len = 0;
1180 unsigned int ccxrm_ie_len = 0;
1181 unsigned int cxvernum_ie_len = 0;
1182 struct lib80211_crypt_data *crypt;
1183 int encrypt;
1184 int PMKCacheIdx;
1185
1186 unsigned int rate_len = (beacon->rates_len ?
1187 (beacon->rates_len + 2) : 0) +
1188 (beacon->rates_ex_len ? (beacon->rates_ex_len) +
1189 2 : 0);
1190
1191 unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1192 unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1193
1194 int len = 0;
1195 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1196 if (crypt != NULL)
1197 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1198 ((0 == strcmp(crypt->ops->name, "R-WEP") ||
1199 wpa_ie_len));
1200 else
1201 encrypt = 0;
1202
1203 if ((ieee->rtllib_ap_sec_type &&
1204 (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1205 (ieee->bForcedBgMode == true)) {
1206 ieee->pHTInfo->bEnableHT = 0;
1207 ieee->mode = WIRELESS_MODE_G;
1208 }
1209
1210 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1211 ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1212 ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1213 HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1214 encrypt, true);
1215 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1216 realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1217 realtek_ie_len =
1218 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1219 HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1220 &realtek_ie_len);
1221 }
1222 }
1223
1224 if (beacon->bCkipSupported)
1225 ckip_ie_len = 30+2;
1226 if (beacon->bCcxRmEnable)
1227 ccxrm_ie_len = 6+2;
1228 if (beacon->BssCcxVerNumber >= 2)
1229 cxvernum_ie_len = 5+2;
1230
1231 PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1232 if (PMKCacheIdx >= 0) {
1233 wpa_ie_len += 18;
1234 printk(KERN_INFO "[PMK cache]: WPA2 IE length: %x\n",
1235 wpa_ie_len);
1236 }
1237 len = sizeof(struct rtllib_assoc_request_frame) + 2
1238 + beacon->ssid_len
1239 + rate_len
1240 + wpa_ie_len
1241 + wps_ie_len
1242 + wmm_info_len
1243 + turbo_info_len
1244 + ht_cap_len
1245 + realtek_ie_len
1246 + ckip_ie_len
1247 + ccxrm_ie_len
1248 + cxvernum_ie_len
1249 + ieee->tx_headroom;
1250
1251 skb = dev_alloc_skb(len);
1252
1253 if (!skb)
1254 return NULL;
1255
1256 skb_reserve(skb, ieee->tx_headroom);
1257
1258 hdr = (struct rtllib_assoc_request_frame *)
1259 skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1260
1261
1262 hdr->header.frame_ctl = RTLLIB_STYPE_ASSOC_REQ;
1263 hdr->header.duration_id = 37;
1264 memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN);
1265 memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1266 memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN);
1267
1268 memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);
1269
1270 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1271 if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1272 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1273
1274 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1275 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1276
1277 if (ieee->short_slot &&
1278 (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1279 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1280
1281
1282 hdr->listen_interval = beacon->listen_interval;
1283
1284 hdr->info_element[0].id = MFIE_TYPE_SSID;
1285
1286 hdr->info_element[0].len = beacon->ssid_len;
1287 tag = skb_put(skb, beacon->ssid_len);
1288 memcpy(tag, beacon->ssid, beacon->ssid_len);
1289
1290 tag = skb_put(skb, rate_len);
1291
1292 if (beacon->rates_len) {
1293 *tag++ = MFIE_TYPE_RATES;
1294 *tag++ = beacon->rates_len;
1295 for (i = 0; i < beacon->rates_len; i++)
1296 *tag++ = beacon->rates[i];
1297 }
1298
1299 if (beacon->rates_ex_len) {
1300 *tag++ = MFIE_TYPE_RATES_EX;
1301 *tag++ = beacon->rates_ex_len;
1302 for (i = 0; i < beacon->rates_ex_len; i++)
1303 *tag++ = beacon->rates_ex[i];
1304 }
1305
1306 if (beacon->bCkipSupported) {
1307 static u8 AironetIeOui[] = {0x00, 0x01, 0x66};
1308 u8 CcxAironetBuf[30];
1309 struct octet_string osCcxAironetIE;
1310
1311 memset(CcxAironetBuf, 0, 30);
1312 osCcxAironetIE.Octet = CcxAironetBuf;
1313 osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1314 memcpy(osCcxAironetIE.Octet, AironetIeOui,
1315 sizeof(AironetIeOui));
1316
1317 osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1318 (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1319 tag = skb_put(skb, ckip_ie_len);
1320 *tag++ = MFIE_TYPE_AIRONET;
1321 *tag++ = osCcxAironetIE.Length;
1322 memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1323 tag += osCcxAironetIE.Length;
1324 }
1325
1326 if (beacon->bCcxRmEnable) {
1327 static u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 0x00};
1328 struct octet_string osCcxRmCap;
1329
1330 osCcxRmCap.Octet = CcxRmCapBuf;
1331 osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1332 tag = skb_put(skb, ccxrm_ie_len);
1333 *tag++ = MFIE_TYPE_GENERIC;
1334 *tag++ = osCcxRmCap.Length;
1335 memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1336 tag += osCcxRmCap.Length;
1337 }
1338
1339 if (beacon->BssCcxVerNumber >= 2) {
1340 u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1341 struct octet_string osCcxVerNum;
1342 CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1343 osCcxVerNum.Octet = CcxVerNumBuf;
1344 osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1345 tag = skb_put(skb, cxvernum_ie_len);
1346 *tag++ = MFIE_TYPE_GENERIC;
1347 *tag++ = osCcxVerNum.Length;
1348 memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1349 tag += osCcxVerNum.Length;
1350 }
1351 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1352 if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1353 tag = skb_put(skb, ht_cap_len);
1354 *tag++ = MFIE_TYPE_HT_CAP;
1355 *tag++ = ht_cap_len - 2;
1356 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1357 tag += ht_cap_len - 2;
1358 }
1359 }
1360
1361 if (wpa_ie_len) {
1362 tag = skb_put(skb, ieee->wpa_ie_len);
1363 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
1364
1365 if (PMKCacheIdx >= 0) {
1366 tag = skb_put(skb, 18);
1367 *tag = 1;
1368 *(tag + 1) = 0;
1369 memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1370 16);
1371 }
1372 }
1373 if (wmm_info_len) {
1374 tag = skb_put(skb, wmm_info_len);
1375 rtllib_WMM_Info(ieee, &tag);
1376 }
1377
1378 if (wps_ie_len && ieee->wps_ie) {
1379 tag = skb_put(skb, wps_ie_len);
1380 memcpy(tag, ieee->wps_ie, wps_ie_len);
1381 }
1382
1383 tag = skb_put(skb, turbo_info_len);
1384 if (turbo_info_len)
1385 rtllib_TURBO_Info(ieee, &tag);
1386
1387 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1388 if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1389 tag = skb_put(skb, ht_cap_len);
1390 *tag++ = MFIE_TYPE_GENERIC;
1391 *tag++ = ht_cap_len - 2;
1392 memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1393 tag += ht_cap_len - 2;
1394 }
1395
1396 if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1397 tag = skb_put(skb, realtek_ie_len);
1398 *tag++ = MFIE_TYPE_GENERIC;
1399 *tag++ = realtek_ie_len - 2;
1400 memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1401 }
1402 }
1403
1404 kfree(ieee->assocreq_ies);
1405 ieee->assocreq_ies = NULL;
1406 ies = &(hdr->info_element[0].id);
1407 ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1408 ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
1409 if (ieee->assocreq_ies)
1410 memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
1411 else {
1412 printk(KERN_INFO "%s()Warning: can't alloc memory for assocreq"
1413 "_ies\n", __func__);
1414 ieee->assocreq_ies_len = 0;
1415 }
1416 return skb;
1417 }
1418
1419 void rtllib_associate_abort(struct rtllib_device *ieee)
1420 {
1421
1422 unsigned long flags;
1423 spin_lock_irqsave(&ieee->lock, flags);
1424
1425 ieee->associate_seq++;
1426
1427 /* don't scan, and avoid to have the RX path possibily
1428 * try again to associate. Even do not react to AUTH or
1429 * ASSOC response. Just wait for the retry wq to be scheduled.
1430 * Here we will check if there are good nets to associate
1431 * with, so we retry or just get back to NO_LINK and scanning
1432 */
1433 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1434 RTLLIB_DEBUG_MGMT("Authentication failed\n");
1435 ieee->softmac_stats.no_auth_rs++;
1436 } else {
1437 RTLLIB_DEBUG_MGMT("Association failed\n");
1438 ieee->softmac_stats.no_ass_rs++;
1439 }
1440
1441 ieee->state = RTLLIB_ASSOCIATING_RETRY;
1442
1443 queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq,
1444 RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1445
1446 spin_unlock_irqrestore(&ieee->lock, flags);
1447 }
1448
1449 static void rtllib_associate_abort_cb(unsigned long dev)
1450 {
1451 rtllib_associate_abort((struct rtllib_device *) dev);
1452 }
1453
1454 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 * daddr)
1455 {
1456 struct rtllib_network *beacon = &ieee->current_network;
1457 struct sk_buff *skb;
1458
1459 RTLLIB_DEBUG_MGMT("Stopping scan\n");
1460
1461 ieee->softmac_stats.tx_auth_rq++;
1462
1463 skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1464
1465 if (!skb)
1466 rtllib_associate_abort(ieee);
1467 else {
1468 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING ;
1469 RTLLIB_DEBUG_MGMT("Sending authentication request\n");
1470 softmac_mgmt_xmit(skb, ieee);
1471 if (!timer_pending(&ieee->associate_timer)) {
1472 ieee->associate_timer.expires = jiffies + (HZ / 2);
1473 add_timer(&ieee->associate_timer);
1474 }
1475 }
1476 }
1477
1478 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, int chlen)
1479 {
1480 u8 *c;
1481 struct sk_buff *skb;
1482 struct rtllib_network *beacon = &ieee->current_network;
1483
1484 ieee->associate_seq++;
1485 ieee->softmac_stats.tx_auth_rq++;
1486
1487 skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1488
1489 if (!skb)
1490 rtllib_associate_abort(ieee);
1491 else {
1492 c = skb_put(skb, chlen+2);
1493 *(c++) = MFIE_TYPE_CHALLENGE;
1494 *(c++) = chlen;
1495 memcpy(c, challenge, chlen);
1496
1497 RTLLIB_DEBUG_MGMT("Sending authentication challenge "
1498 "response\n");
1499
1500 rtllib_encrypt_fragment(ieee, skb,
1501 sizeof(struct rtllib_hdr_3addr));
1502
1503 softmac_mgmt_xmit(skb, ieee);
1504 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1505 }
1506 kfree(challenge);
1507 }
1508
1509 static void rtllib_associate_step2(struct rtllib_device *ieee)
1510 {
1511 struct sk_buff *skb;
1512 struct rtllib_network *beacon = &ieee->current_network;
1513
1514 del_timer_sync(&ieee->associate_timer);
1515
1516 RTLLIB_DEBUG_MGMT("Sending association request\n");
1517
1518 ieee->softmac_stats.tx_ass_rq++;
1519 skb = rtllib_association_req(beacon, ieee);
1520 if (!skb)
1521 rtllib_associate_abort(ieee);
1522 else {
1523 softmac_mgmt_xmit(skb, ieee);
1524 mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1525 }
1526 }
1527
1528 #define CANCELLED 2
1529 static void rtllib_associate_complete_wq(void *data)
1530 {
1531 struct rtllib_device *ieee = (struct rtllib_device *)
1532 container_of_work_rsl(data,
1533 struct rtllib_device,
1534 associate_complete_wq);
1535 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1536 (&(ieee->PowerSaveControl));
1537 printk(KERN_INFO "Associated successfully\n");
1538 if (ieee->is_silent_reset == 0) {
1539 printk(KERN_INFO "normal associate\n");
1540 notify_wx_assoc_event(ieee);
1541 }
1542
1543 netif_carrier_on(ieee->dev);
1544 ieee->is_roaming = false;
1545 if (rtllib_is_54g(&ieee->current_network) &&
1546 (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1547 ieee->rate = 108;
1548 printk(KERN_INFO"Using G rates:%d\n", ieee->rate);
1549 } else {
1550 ieee->rate = 22;
1551 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1552 printk(KERN_INFO"Using B rates:%d\n", ieee->rate);
1553 }
1554 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1555 printk(KERN_INFO "Successfully associated, ht enabled\n");
1556 HTOnAssocRsp(ieee);
1557 } else {
1558 printk(KERN_INFO "Successfully associated, ht not "
1559 "enabled(%d, %d)\n",
1560 ieee->pHTInfo->bCurrentHTSupport,
1561 ieee->pHTInfo->bEnableHT);
1562 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1563 }
1564 ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1565 ieee->current_network.beacon_interval /
1566 500);
1567 if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1568 ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1569 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1570 ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1571 }
1572 pPSC->LpsIdleCount = 0;
1573 ieee->link_change(ieee->dev);
1574
1575 if (ieee->is_silent_reset == 1) {
1576 printk(KERN_INFO "silent reset associate\n");
1577 ieee->is_silent_reset = 0;
1578 }
1579
1580 if (ieee->data_hard_resume)
1581 ieee->data_hard_resume(ieee->dev);
1582
1583 }
1584
1585 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1586 {
1587 }
1588
1589 static void rtllib_associate_complete(struct rtllib_device *ieee)
1590 {
1591 del_timer_sync(&ieee->associate_timer);
1592
1593 ieee->state = RTLLIB_LINKED;
1594 rtllib_sta_send_associnfo(ieee);
1595
1596 queue_work_rsl(ieee->wq, &ieee->associate_complete_wq);
1597 }
1598
1599 static void rtllib_associate_procedure_wq(void *data)
1600 {
1601 struct rtllib_device *ieee = container_of_dwork_rsl(data,
1602 struct rtllib_device,
1603 associate_procedure_wq);
1604 rtllib_stop_scan_syncro(ieee);
1605 if (ieee->rtllib_ips_leave != NULL)
1606 ieee->rtllib_ips_leave(ieee->dev);
1607 down(&ieee->wx_sem);
1608
1609 if (ieee->data_hard_stop)
1610 ieee->data_hard_stop(ieee->dev);
1611
1612 rtllib_stop_scan(ieee);
1613 RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1614 ieee->current_network.channel);
1615 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1616 if (ieee->eRFPowerState == eRfOff) {
1617 RT_TRACE(COMP_DBG, "=============>%s():Rf state is eRfOff,"
1618 " schedule ipsleave wq again,return\n", __func__);
1619 if (ieee->rtllib_ips_leave_wq != NULL)
1620 ieee->rtllib_ips_leave_wq(ieee->dev);
1621 up(&ieee->wx_sem);
1622 return;
1623 }
1624 ieee->associate_seq = 1;
1625
1626 rtllib_associate_step1(ieee, ieee->current_network.bssid);
1627
1628 up(&ieee->wx_sem);
1629 }
1630
1631 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1632 struct rtllib_network *net)
1633 {
1634 u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1635 int tmp_ssid_len = 0;
1636
1637 short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1638
1639 /* we are interested in new new only if we are not associated
1640 * and we are not associating / authenticating
1641 */
1642 if (ieee->state != RTLLIB_NOLINK)
1643 return;
1644
1645 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1646 WLAN_CAPABILITY_ESS))
1647 return;
1648
1649 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1650 WLAN_CAPABILITY_IBSS))
1651 return;
1652
1653 if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1654 (net->channel > ieee->ibss_maxjoin_chal))
1655 return;
1656 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1657 /* if the user specified the AP MAC, we need also the essid
1658 * This could be obtained by beacons or, if the network does not
1659 * broadcast it, it can be put manually.
1660 */
1661 apset = ieee->wap_set;
1662 ssidset = ieee->ssid_set;
1663 ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0');
1664 apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1665 ETH_ALEN) == 0);
1666 if (!ssidbroad) {
1667 ssidmatch = (ieee->current_network.ssid_len ==
1668 net->hidden_ssid_len) &&
1669 (!strncmp(ieee->current_network.ssid,
1670 net->hidden_ssid, net->hidden_ssid_len));
1671 if (net->hidden_ssid_len > 0) {
1672 strncpy(net->ssid, net->hidden_ssid,
1673 net->hidden_ssid_len);
1674 net->ssid_len = net->hidden_ssid_len;
1675 ssidbroad = 1;
1676 }
1677 } else
1678 ssidmatch =
1679 (ieee->current_network.ssid_len == net->ssid_len) &&
1680 (!strncmp(ieee->current_network.ssid, net->ssid,
1681 net->ssid_len));
1682
1683 /* if the user set the AP check if match.
1684 * if the network does not broadcast essid we check the
1685 * user supplied ANY essid
1686 * if the network does broadcast and the user does not set
1687 * essid it is OK
1688 * if the network does broadcast and the user did set essid
1689 * check if essid match
1690 * if the ap is not set, check that the user set the bssid
1691 * and the network does broadcast and that those two bssid match
1692 */
1693 if ((apset && apmatch &&
1694 ((ssidset && ssidbroad && ssidmatch) ||
1695 (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1696 (!apset && ssidset && ssidbroad && ssidmatch) ||
1697 (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1698 /* if the essid is hidden replace it with the
1699 * essid provided by the user.
1700 */
1701 if (!ssidbroad) {
1702 strncpy(tmp_ssid, ieee->current_network.ssid,
1703 IW_ESSID_MAX_SIZE);
1704 tmp_ssid_len = ieee->current_network.ssid_len;
1705 }
1706 memcpy(&ieee->current_network, net,
1707 sizeof(struct rtllib_network));
1708 if (!ssidbroad) {
1709 strncpy(ieee->current_network.ssid, tmp_ssid,
1710 IW_ESSID_MAX_SIZE);
1711 ieee->current_network.ssid_len = tmp_ssid_len;
1712 }
1713 printk(KERN_INFO"Linking with %s,channel:%d, qos:%d, "
1714 "myHT:%d, networkHT:%d, mode:%x cur_net.flags"
1715 ":0x%x\n", ieee->current_network.ssid,
1716 ieee->current_network.channel,
1717 ieee->current_network.qos_data.supported,
1718 ieee->pHTInfo->bEnableHT,
1719 ieee->current_network.bssht.bdSupportHT,
1720 ieee->current_network.mode,
1721 ieee->current_network.flags);
1722
1723 if ((rtllib_act_scanning(ieee, false)) &&
1724 !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1725 rtllib_stop_scan_syncro(ieee);
1726
1727 ieee->hwscan_ch_bk = ieee->current_network.channel;
1728 HTResetIOTSetting(ieee->pHTInfo);
1729 ieee->wmm_acm = 0;
1730 if (ieee->iw_mode == IW_MODE_INFRA) {
1731 /* Join the network for the first time */
1732 ieee->AsocRetryCount = 0;
1733 if ((ieee->current_network.qos_data.supported == 1) &&
1734 ieee->current_network.bssht.bdSupportHT)
1735 HTResetSelfAndSavePeerSetting(ieee,
1736 &(ieee->current_network));
1737 else
1738 ieee->pHTInfo->bCurrentHTSupport =
1739 false;
1740
1741 ieee->state = RTLLIB_ASSOCIATING;
1742 if (ieee->LedControlHandler != NULL)
1743 ieee->LedControlHandler(ieee->dev,
1744 LED_CTL_START_TO_LINK);
1745 queue_delayed_work_rsl(ieee->wq,
1746 &ieee->associate_procedure_wq, 0);
1747 } else {
1748 if (rtllib_is_54g(&ieee->current_network) &&
1749 (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1750 ieee->rate = 108;
1751 ieee->SetWirelessMode(ieee->dev, IEEE_G);
1752 printk(KERN_INFO"Using G rates\n");
1753 } else {
1754 ieee->rate = 22;
1755 ieee->SetWirelessMode(ieee->dev, IEEE_B);
1756 printk(KERN_INFO"Using B rates\n");
1757 }
1758 memset(ieee->dot11HTOperationalRateSet, 0, 16);
1759 ieee->state = RTLLIB_LINKED;
1760 }
1761 }
1762 }
1763 }
1764
1765 void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1766 {
1767 unsigned long flags;
1768 struct rtllib_network *target;
1769
1770 spin_lock_irqsave(&ieee->lock, flags);
1771
1772 list_for_each_entry(target, &ieee->network_list, list) {
1773
1774 /* if the state become different that NOLINK means
1775 * we had found what we are searching for
1776 */
1777
1778 if (ieee->state != RTLLIB_NOLINK)
1779 break;
1780
1781 if (ieee->scan_age == 0 || time_after(target->last_scanned +
1782 ieee->scan_age, jiffies))
1783 rtllib_softmac_new_net(ieee, target);
1784 }
1785 spin_unlock_irqrestore(&ieee->lock, flags);
1786 }
1787
1788 static inline u16 auth_parse(struct sk_buff *skb, u8** challenge, int *chlen)
1789 {
1790 struct rtllib_authentication *a;
1791 u8 *t;
1792 if (skb->len < (sizeof(struct rtllib_authentication) -
1793 sizeof(struct rtllib_info_element))) {
1794 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1795 return 0xcafe;
1796 }
1797 *challenge = NULL;
1798 a = (struct rtllib_authentication *) skb->data;
1799 if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1800 t = skb->data + sizeof(struct rtllib_authentication);
1801
1802 if (*(t++) == MFIE_TYPE_CHALLENGE) {
1803 *chlen = *(t++);
1804 *challenge = kmalloc(*chlen, GFP_ATOMIC);
1805 memcpy(*challenge, t, *chlen); /*TODO - check here*/
1806 }
1807 }
1808 return cpu_to_le16(a->status);
1809 }
1810
1811 static int auth_rq_parse(struct sk_buff *skb, u8 *dest)
1812 {
1813 struct rtllib_authentication *a;
1814
1815 if (skb->len < (sizeof(struct rtllib_authentication) -
1816 sizeof(struct rtllib_info_element))) {
1817 RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n",
1818 skb->len);
1819 return -1;
1820 }
1821 a = (struct rtllib_authentication *) skb->data;
1822
1823 memcpy(dest, a->header.addr2, ETH_ALEN);
1824
1825 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1826 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1827
1828 return WLAN_STATUS_SUCCESS;
1829 }
1830
1831 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1832 u8 *src)
1833 {
1834 u8 *tag;
1835 u8 *skbend;
1836 u8 *ssid = NULL;
1837 u8 ssidlen = 0;
1838 struct rtllib_hdr_3addr *header =
1839 (struct rtllib_hdr_3addr *) skb->data;
1840 bool bssid_match;
1841
1842 if (skb->len < sizeof(struct rtllib_hdr_3addr))
1843 return -1; /* corrupted */
1844
1845 bssid_match =
1846 (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) &&
1847 (!is_broadcast_ether_addr(header->addr3));
1848 if (bssid_match)
1849 return -1;
1850
1851 memcpy(src, header->addr2, ETH_ALEN);
1852
1853 skbend = (u8 *)skb->data + skb->len;
1854
1855 tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1856
1857 while (tag + 1 < skbend) {
1858 if (*tag == 0) {
1859 ssid = tag + 2;
1860 ssidlen = *(tag + 1);
1861 break;
1862 }
1863 tag++; /* point to the len field */
1864 tag = tag + *(tag); /* point to the last data byte of the tag */
1865 tag++; /* point to the next tag */
1866 }
1867
1868 if (ssidlen == 0)
1869 return 1;
1870
1871 if (!ssid)
1872 return 1; /* ssid not found in tagged param */
1873
1874 return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1875 }
1876
1877 static int assoc_rq_parse(struct sk_buff *skb, u8 *dest)
1878 {
1879 struct rtllib_assoc_request_frame *a;
1880
1881 if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1882 sizeof(struct rtllib_info_element))) {
1883
1884 RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len);
1885 return -1;
1886 }
1887
1888 a = (struct rtllib_assoc_request_frame *) skb->data;
1889
1890 memcpy(dest, a->header.addr2, ETH_ALEN);
1891
1892 return 0;
1893 }
1894
1895 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1896 int *aid)
1897 {
1898 struct rtllib_assoc_response_frame *response_head;
1899 u16 status_code;
1900
1901 if (skb->len < sizeof(struct rtllib_assoc_response_frame)) {
1902 RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1903 return 0xcafe;
1904 }
1905
1906 response_head = (struct rtllib_assoc_response_frame *) skb->data;
1907 *aid = le16_to_cpu(response_head->aid) & 0x3fff;
1908
1909 status_code = le16_to_cpu(response_head->status);
1910 if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1911 status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1912 ((ieee->mode == IEEE_G) &&
1913 (ieee->current_network.mode == IEEE_N_24G) &&
1914 (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1915 ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1916 } else {
1917 ieee->AsocRetryCount = 0;
1918 }
1919
1920 return le16_to_cpu(response_head->status);
1921 }
1922
1923 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1924 {
1925 u8 dest[ETH_ALEN];
1926 ieee->softmac_stats.rx_probe_rq++;
1927 if (probe_rq_parse(ieee, skb, dest) > 0) {
1928 ieee->softmac_stats.tx_probe_rs++;
1929 rtllib_resp_to_probe(ieee, dest);
1930 }
1931 }
1932
1933 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1934 struct sk_buff *skb)
1935 {
1936 u8 dest[ETH_ALEN];
1937 int status;
1938 ieee->softmac_stats.rx_auth_rq++;
1939
1940 status = auth_rq_parse(skb, dest);
1941 if (status != -1)
1942 rtllib_resp_to_auth(ieee, status, dest);
1943 }
1944
1945 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1946 struct sk_buff *skb)
1947 {
1948
1949 u8 dest[ETH_ALEN];
1950
1951 ieee->softmac_stats.rx_ass_rq++;
1952 if (assoc_rq_parse(skb, dest) != -1)
1953 rtllib_resp_to_assoc_rq(ieee, dest);
1954
1955 printk(KERN_INFO"New client associated: %pM\n", dest);
1956 }
1957
1958 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1959 {
1960
1961 struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1962
1963 if (buf)
1964 softmac_ps_mgmt_xmit(buf, ieee);
1965 }
1966 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1967
1968 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1969 {
1970 struct sk_buff *buf = rtllib_pspoll_func(ieee);
1971
1972 if (buf)
1973 softmac_ps_mgmt_xmit(buf, ieee);
1974 }
1975
1976 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1977 {
1978 int timeout = ieee->ps_timeout;
1979 u8 dtim;
1980 struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1981 (&(ieee->PowerSaveControl));
1982
1983 if (ieee->LPSDelayCnt) {
1984 ieee->LPSDelayCnt--;
1985 return 0;
1986 }
1987
1988 dtim = ieee->current_network.dtim_data;
1989 if (!(dtim & RTLLIB_DTIM_VALID))
1990 return 0;
1991 timeout = ieee->current_network.beacon_interval;
1992 ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1993 /* there's no need to nofity AP that I find you buffered
1994 * with broadcast packet */
1995 if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1996 return 2;
1997
1998 if (!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout)))
1999 return 0;
2000 if (!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout)))
2001 return 0;
2002 if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
2003 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
2004 return 0;
2005
2006 if (time) {
2007 if (ieee->bAwakePktSent == true) {
2008 pPSC->LPSAwakeIntvl = 1;
2009 } else {
2010 u8 MaxPeriod = 1;
2011
2012 if (pPSC->LPSAwakeIntvl == 0)
2013 pPSC->LPSAwakeIntvl = 1;
2014 if (pPSC->RegMaxLPSAwakeIntvl == 0)
2015 MaxPeriod = 1;
2016 else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2017 MaxPeriod = ieee->current_network.dtim_period;
2018 else
2019 MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2020 pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2021 MaxPeriod) ? MaxPeriod :
2022 (pPSC->LPSAwakeIntvl + 1);
2023 }
2024 {
2025 u8 LPSAwakeIntvl_tmp = 0;
2026 u8 period = ieee->current_network.dtim_period;
2027 u8 count = ieee->current_network.tim.tim_count;
2028 if (count == 0) {
2029 if (pPSC->LPSAwakeIntvl > period)
2030 LPSAwakeIntvl_tmp = period +
2031 (pPSC->LPSAwakeIntvl -
2032 period) -
2033 ((pPSC->LPSAwakeIntvl-period) %
2034 period);
2035 else
2036 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2037
2038 } else {
2039 if (pPSC->LPSAwakeIntvl >
2040 ieee->current_network.tim.tim_count)
2041 LPSAwakeIntvl_tmp = count +
2042 (pPSC->LPSAwakeIntvl - count) -
2043 ((pPSC->LPSAwakeIntvl-count)%period);
2044 else
2045 LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2046 }
2047
2048 *time = ieee->current_network.last_dtim_sta_time
2049 + MSECS(ieee->current_network.beacon_interval *
2050 LPSAwakeIntvl_tmp);
2051 }
2052 }
2053
2054 return 1;
2055
2056
2057 }
2058
2059 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2060 {
2061 u64 time;
2062 short sleep;
2063 unsigned long flags, flags2;
2064
2065 spin_lock_irqsave(&ieee->lock, flags);
2066
2067 if ((ieee->ps == RTLLIB_PS_DISABLED ||
2068 ieee->iw_mode != IW_MODE_INFRA ||
2069 ieee->state != RTLLIB_LINKED)) {
2070 RT_TRACE(COMP_DBG, "=====>%s(): no need to ps,wake up!! "
2071 "ieee->ps is %d, ieee->iw_mode is %d, ieee->state"
2072 " is %d\n", __func__, ieee->ps, ieee->iw_mode,
2073 ieee->state);
2074 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2075 rtllib_sta_wakeup(ieee, 1);
2076
2077 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2078 }
2079 sleep = rtllib_sta_ps_sleep(ieee, &time);
2080 /* 2 wake, 1 sleep, 0 do nothing */
2081 if (sleep == 0)
2082 goto out;
2083 if (sleep == 1) {
2084 if (ieee->sta_sleep == LPS_IS_SLEEP) {
2085 ieee->enter_sleep_state(ieee->dev, time);
2086 } else if (ieee->sta_sleep == LPS_IS_WAKE) {
2087 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2088
2089 if (ieee->ps_is_queue_empty(ieee->dev)) {
2090 ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2091 ieee->ack_tx_to_ieee = 1;
2092 rtllib_sta_ps_send_null_frame(ieee, 1);
2093 ieee->ps_time = time;
2094 }
2095 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2096
2097 }
2098
2099 ieee->bAwakePktSent = false;
2100
2101 } else if (sleep == 2) {
2102 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2103
2104 rtllib_sta_wakeup(ieee, 1);
2105
2106 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2107 }
2108
2109 out:
2110 spin_unlock_irqrestore(&ieee->lock, flags);
2111
2112 }
2113
2114 void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2115 {
2116 if (ieee->sta_sleep == LPS_IS_WAKE) {
2117 if (nl) {
2118 if (ieee->pHTInfo->IOTAction &
2119 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2120 ieee->ack_tx_to_ieee = 1;
2121 rtllib_sta_ps_send_null_frame(ieee, 0);
2122 } else {
2123 ieee->ack_tx_to_ieee = 1;
2124 rtllib_sta_ps_send_pspoll_frame(ieee);
2125 }
2126 }
2127 return;
2128
2129 }
2130
2131 if (ieee->sta_sleep == LPS_IS_SLEEP)
2132 ieee->sta_wake_up(ieee->dev);
2133 if (nl) {
2134 if (ieee->pHTInfo->IOTAction &
2135 HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2136 ieee->ack_tx_to_ieee = 1;
2137 rtllib_sta_ps_send_null_frame(ieee, 0);
2138 } else {
2139 ieee->ack_tx_to_ieee = 1;
2140 ieee->polling = true;
2141 rtllib_sta_ps_send_pspoll_frame(ieee);
2142 }
2143
2144 } else {
2145 ieee->sta_sleep = LPS_IS_WAKE;
2146 ieee->polling = false;
2147 }
2148 }
2149
2150 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2151 {
2152 unsigned long flags, flags2;
2153
2154 spin_lock_irqsave(&ieee->lock, flags);
2155
2156 if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2157 /* Null frame with PS bit set */
2158 if (success) {
2159 ieee->sta_sleep = LPS_IS_SLEEP;
2160 ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2161 }
2162 /* if the card report not success we can't be sure the AP
2163 * has not RXed so we can't assume the AP believe us awake
2164 */
2165 } else {/* 21112005 - tx again null without PS bit if lost */
2166
2167 if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2168 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2169 if (ieee->pHTInfo->IOTAction &
2170 HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2171 rtllib_sta_ps_send_null_frame(ieee, 0);
2172 else
2173 rtllib_sta_ps_send_pspoll_frame(ieee);
2174 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2175 }
2176 }
2177 spin_unlock_irqrestore(&ieee->lock, flags);
2178 }
2179 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2180
2181 static void rtllib_process_action(struct rtllib_device *ieee, struct sk_buff *skb)
2182 {
2183 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2184 u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2185 u8 category = 0;
2186
2187 if (act == NULL) {
2188 RTLLIB_DEBUG(RTLLIB_DL_ERR, "error to get payload of "
2189 "action frame\n");
2190 return;
2191 }
2192
2193 category = *act;
2194 act++;
2195 switch (category) {
2196 case ACT_CAT_BA:
2197 switch (*act) {
2198 case ACT_ADDBAREQ:
2199 rtllib_rx_ADDBAReq(ieee, skb);
2200 break;
2201 case ACT_ADDBARSP:
2202 rtllib_rx_ADDBARsp(ieee, skb);
2203 break;
2204 case ACT_DELBA:
2205 rtllib_rx_DELBA(ieee, skb);
2206 break;
2207 }
2208 break;
2209 default:
2210 break;
2211 }
2212 return;
2213 }
2214
2215 inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2216 struct rtllib_rx_stats *rx_stats)
2217 {
2218 u16 errcode;
2219 int aid;
2220 u8 *ies;
2221 struct rtllib_assoc_response_frame *assoc_resp;
2222 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2223
2224 RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
2225 WLAN_FC_GET_STYPE(header->frame_ctl));
2226
2227 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2228 ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2229 (ieee->iw_mode == IW_MODE_INFRA)) {
2230 errcode = assoc_parse(ieee, skb, &aid);
2231 if (0 == errcode) {
2232 struct rtllib_network *network =
2233 kzalloc(sizeof(struct rtllib_network),
2234 GFP_ATOMIC);
2235
2236 if (!network)
2237 return 1;
2238 ieee->state = RTLLIB_LINKED;
2239 ieee->assoc_id = aid;
2240 ieee->softmac_stats.rx_ass_ok++;
2241 /* station support qos */
2242 /* Let the register setting default with Legacy station */
2243 assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2244 if (ieee->current_network.qos_data.supported == 1) {
2245 if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2246 rx_stats->len - sizeof(*assoc_resp),
2247 network, rx_stats)) {
2248 kfree(network);
2249 return 1;
2250 } else {
2251 memcpy(ieee->pHTInfo->PeerHTCapBuf,
2252 network->bssht.bdHTCapBuf,
2253 network->bssht.bdHTCapLen);
2254 memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2255 network->bssht.bdHTInfoBuf,
2256 network->bssht.bdHTInfoLen);
2257 }
2258 if (ieee->handle_assoc_response != NULL)
2259 ieee->handle_assoc_response(ieee->dev,
2260 (struct rtllib_assoc_response_frame *)header,
2261 network);
2262 }
2263 kfree(network);
2264
2265 kfree(ieee->assocresp_ies);
2266 ieee->assocresp_ies = NULL;
2267 ies = &(assoc_resp->info_element[0].id);
2268 ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2269 ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2270 GFP_ATOMIC);
2271 if (ieee->assocresp_ies)
2272 memcpy(ieee->assocresp_ies, ies,
2273 ieee->assocresp_ies_len);
2274 else {
2275 printk(KERN_INFO "%s()Warning: can't alloc "
2276 "memory for assocresp_ies\n", __func__);
2277 ieee->assocresp_ies_len = 0;
2278 }
2279 rtllib_associate_complete(ieee);
2280 } else {
2281 /* aid could not been allocated */
2282 ieee->softmac_stats.rx_ass_err++;
2283 printk(KERN_INFO "Association response status code 0x%x\n",
2284 errcode);
2285 RTLLIB_DEBUG_MGMT(
2286 "Association response status code 0x%x\n",
2287 errcode);
2288 if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2289 queue_delayed_work_rsl(ieee->wq,
2290 &ieee->associate_procedure_wq, 0);
2291 else
2292 rtllib_associate_abort(ieee);
2293 }
2294 }
2295 return 0;
2296 }
2297
2298 inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2299 struct rtllib_rx_stats *rx_stats)
2300 {
2301 u16 errcode;
2302 u8 *challenge;
2303 int chlen = 0;
2304 bool bSupportNmode = true, bHalfSupportNmode = false;
2305
2306 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2307 if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2308 (ieee->iw_mode == IW_MODE_INFRA)) {
2309 RTLLIB_DEBUG_MGMT("Received authentication response");
2310
2311 errcode = auth_parse(skb, &challenge, &chlen);
2312 if (0 == errcode) {
2313 if (ieee->open_wep || !challenge) {
2314 ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2315 ieee->softmac_stats.rx_auth_rs_ok++;
2316 if (!(ieee->pHTInfo->IOTAction &
2317 HT_IOT_ACT_PURE_N_MODE)) {
2318 if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2319 if (IsHTHalfNmodeAPs(ieee)) {
2320 bSupportNmode = true;
2321 bHalfSupportNmode = true;
2322 } else {
2323 bSupportNmode = false;
2324 bHalfSupportNmode = false;
2325 }
2326 }
2327 }
2328 /* Dummy wirless mode setting to avoid
2329 * encryption issue */
2330 if (bSupportNmode) {
2331 ieee->SetWirelessMode(ieee->dev,
2332 ieee->current_network.mode);
2333 } else {
2334 /*TODO*/
2335 ieee->SetWirelessMode(ieee->dev,
2336 IEEE_G);
2337 }
2338
2339 if (ieee->current_network.mode ==
2340 IEEE_N_24G &&
2341 bHalfSupportNmode == true) {
2342 printk(KERN_INFO "======>enter "
2343 "half N mode\n");
2344 ieee->bHalfWirelessN24GMode =
2345 true;
2346 } else
2347 ieee->bHalfWirelessN24GMode =
2348 false;
2349
2350 rtllib_associate_step2(ieee);
2351 } else {
2352 rtllib_auth_challenge(ieee, challenge,
2353 chlen);
2354 }
2355 } else {
2356 ieee->softmac_stats.rx_auth_rs_err++;
2357 RTLLIB_DEBUG_MGMT("Authentication respose"
2358 " status code 0x%x", errcode);
2359
2360 printk(KERN_INFO "Authentication respose "
2361 "status code 0x%x", errcode);
2362 rtllib_associate_abort(ieee);
2363 }
2364
2365 } else if (ieee->iw_mode == IW_MODE_MASTER) {
2366 rtllib_rx_auth_rq(ieee, skb);
2367 }
2368 }
2369 return 0;
2370 }
2371
2372 inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2373 {
2374 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2375
2376 if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2377 return 0;
2378
2379 /* FIXME for now repeat all the association procedure
2380 * both for disassociation and deauthentication
2381 */
2382 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2383 ieee->state == RTLLIB_LINKED &&
2384 (ieee->iw_mode == IW_MODE_INFRA)) {
2385 printk(KERN_INFO "==========>received disassoc/deauth(%x) "
2386 "frame, reason code:%x\n",
2387 WLAN_FC_GET_STYPE(header->frame_ctl),
2388 ((struct rtllib_disassoc *)skb->data)->reason);
2389 ieee->state = RTLLIB_ASSOCIATING;
2390 ieee->softmac_stats.reassoc++;
2391 ieee->is_roaming = true;
2392 ieee->LinkDetectInfo.bBusyTraffic = false;
2393 rtllib_disassociate(ieee);
2394 RemovePeerTS(ieee, header->addr2);
2395 if (ieee->LedControlHandler != NULL)
2396 ieee->LedControlHandler(ieee->dev,
2397 LED_CTL_START_TO_LINK);
2398
2399 if (!(ieee->rtllib_ap_sec_type(ieee) &
2400 (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2401 queue_delayed_work_rsl(ieee->wq,
2402 &ieee->associate_procedure_wq, 5);
2403 }
2404 return 0;
2405 }
2406
2407 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2408 struct sk_buff *skb,
2409 struct rtllib_rx_stats *rx_stats, u16 type,
2410 u16 stype)
2411 {
2412 struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2413
2414 if (!ieee->proto_started)
2415 return 0;
2416
2417 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2418 case RTLLIB_STYPE_ASSOC_RESP:
2419 case RTLLIB_STYPE_REASSOC_RESP:
2420 if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2421 return 1;
2422 break;
2423 case RTLLIB_STYPE_ASSOC_REQ:
2424 case RTLLIB_STYPE_REASSOC_REQ:
2425 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2426 ieee->iw_mode == IW_MODE_MASTER)
2427 rtllib_rx_assoc_rq(ieee, skb);
2428 break;
2429 case RTLLIB_STYPE_AUTH:
2430 rtllib_rx_auth(ieee, skb, rx_stats);
2431 break;
2432 case RTLLIB_STYPE_DISASSOC:
2433 case RTLLIB_STYPE_DEAUTH:
2434 rtllib_rx_deauth(ieee, skb);
2435 break;
2436 case RTLLIB_STYPE_MANAGE_ACT:
2437 rtllib_process_action(ieee, skb);
2438 break;
2439 default:
2440 return -1;
2441 break;
2442 }
2443 return 0;
2444 }
2445
2446 /* following are for a simpler TX queue management.
2447 * Instead of using netif_[stop/wake]_queue the driver
2448 * will use these two functions (plus a reset one), that
2449 * will internally use the kernel netif_* and takes
2450 * care of the ieee802.11 fragmentation.
2451 * So the driver receives a fragment per time and might
2452 * call the stop function when it wants to not
2453 * have enough room to TX an entire packet.
2454 * This might be useful if each fragment needs it's own
2455 * descriptor, thus just keep a total free memory > than
2456 * the max fragmentation threshold is not enough.. If the
2457 * ieee802.11 stack passed a TXB struct then you need
2458 * to keep N free descriptors where
2459 * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2460 * In this way you need just one and the 802.11 stack
2461 * will take care of buffering fragments and pass them to
2462 * to the driver later, when it wakes the queue.
2463 */
2464 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2465 {
2466
2467 unsigned int queue_index = txb->queue_index;
2468 unsigned long flags;
2469 int i;
2470 struct cb_desc *tcb_desc = NULL;
2471 unsigned long queue_len = 0;
2472
2473 spin_lock_irqsave(&ieee->lock, flags);
2474
2475 /* called with 2nd parm 0, no tx mgmt lock required */
2476 rtllib_sta_wakeup(ieee, 0);
2477
2478 /* update the tx status */
2479 tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2480 MAX_DEV_ADDR_SIZE);
2481 if (tcb_desc->bMulticast)
2482 ieee->stats.multicast++;
2483
2484 /* if xmit available, just xmit it immediately, else just insert it to
2485 * the wait queue */
2486 for (i = 0; i < txb->nr_frags; i++) {
2487 queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2488 if ((queue_len != 0) ||\
2489 (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2490 (ieee->queue_stop)) {
2491 /* insert the skb packet to the wait queue */
2492 /* as for the completion function, it does not need
2493 * to check it any more.
2494 * */
2495 if (queue_len < 200)
2496 skb_queue_tail(&ieee->skb_waitQ[queue_index],
2497 txb->fragments[i]);
2498 else
2499 kfree_skb(txb->fragments[i]);
2500 } else {
2501 ieee->softmac_data_hard_start_xmit(
2502 txb->fragments[i],
2503 ieee->dev, ieee->rate);
2504 }
2505 }
2506
2507 rtllib_txb_free(txb);
2508
2509 spin_unlock_irqrestore(&ieee->lock, flags);
2510
2511 }
2512
2513 /* called with ieee->lock acquired */
2514 static void rtllib_resume_tx(struct rtllib_device *ieee)
2515 {
2516 int i;
2517 for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags;
2518 i++) {
2519
2520 if (ieee->queue_stop) {
2521 ieee->tx_pending.frag = i;
2522 return;
2523 } else {
2524
2525 ieee->softmac_data_hard_start_xmit(
2526 ieee->tx_pending.txb->fragments[i],
2527 ieee->dev, ieee->rate);
2528 ieee->stats.tx_packets++;
2529 }
2530 }
2531
2532 rtllib_txb_free(ieee->tx_pending.txb);
2533 ieee->tx_pending.txb = NULL;
2534 }
2535
2536
2537 void rtllib_reset_queue(struct rtllib_device *ieee)
2538 {
2539 unsigned long flags;
2540
2541 spin_lock_irqsave(&ieee->lock, flags);
2542 init_mgmt_queue(ieee);
2543 if (ieee->tx_pending.txb) {
2544 rtllib_txb_free(ieee->tx_pending.txb);
2545 ieee->tx_pending.txb = NULL;
2546 }
2547 ieee->queue_stop = 0;
2548 spin_unlock_irqrestore(&ieee->lock, flags);
2549
2550 }
2551 EXPORT_SYMBOL(rtllib_reset_queue);
2552
2553 void rtllib_wake_queue(struct rtllib_device *ieee)
2554 {
2555
2556 unsigned long flags;
2557 struct sk_buff *skb;
2558 struct rtllib_hdr_3addr *header;
2559
2560 spin_lock_irqsave(&ieee->lock, flags);
2561 if (!ieee->queue_stop)
2562 goto exit;
2563
2564 ieee->queue_stop = 0;
2565
2566 if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) {
2567 while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) {
2568
2569 header = (struct rtllib_hdr_3addr *) skb->data;
2570
2571 header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2572
2573 if (ieee->seq_ctrl[0] == 0xFFF)
2574 ieee->seq_ctrl[0] = 0;
2575 else
2576 ieee->seq_ctrl[0]++;
2577
2578 ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
2579 ieee->basic_rate);
2580 }
2581 }
2582 if (!ieee->queue_stop && ieee->tx_pending.txb)
2583 rtllib_resume_tx(ieee);
2584
2585 if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) {
2586 ieee->softmac_stats.swtxawake++;
2587 netif_wake_queue(ieee->dev);
2588 }
2589
2590 exit:
2591 spin_unlock_irqrestore(&ieee->lock, flags);
2592 }
2593
2594
2595 void rtllib_stop_queue(struct rtllib_device *ieee)
2596 {
2597
2598 if (!netif_queue_stopped(ieee->dev)) {
2599 netif_stop_queue(ieee->dev);
2600 ieee->softmac_stats.swtxstop++;
2601 }
2602 ieee->queue_stop = 1;
2603
2604 }
2605
2606 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2607 {
2608 unsigned int i;
2609 for (i = 0; i < ieee->dev->num_tx_queues; i++)
2610 netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2611
2612 netif_tx_stop_all_queues(ieee->dev);
2613 }
2614
2615 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2616 {
2617 netif_tx_wake_all_queues(ieee->dev);
2618 }
2619
2620 inline void rtllib_randomize_cell(struct rtllib_device *ieee)
2621 {
2622
2623 random_ether_addr(ieee->current_network.bssid);
2624 }
2625
2626 /* called in user context only */
2627 void rtllib_start_master_bss(struct rtllib_device *ieee)
2628 {
2629 ieee->assoc_id = 1;
2630
2631 if (ieee->current_network.ssid_len == 0) {
2632 strncpy(ieee->current_network.ssid,
2633 RTLLIB_DEFAULT_TX_ESSID,
2634 IW_ESSID_MAX_SIZE);
2635
2636 ieee->current_network.ssid_len =
2637 strlen(RTLLIB_DEFAULT_TX_ESSID);
2638 ieee->ssid_set = 1;
2639 }
2640
2641 memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN);
2642
2643 ieee->set_chan(ieee->dev, ieee->current_network.channel);
2644 ieee->state = RTLLIB_LINKED;
2645 ieee->link_change(ieee->dev);
2646 notify_wx_assoc_event(ieee);
2647
2648 if (ieee->data_hard_resume)
2649 ieee->data_hard_resume(ieee->dev);
2650
2651 netif_carrier_on(ieee->dev);
2652 }
2653
2654 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2655 {
2656 /* reset hardware status */
2657 if (ieee->raw_tx) {
2658 if (ieee->data_hard_resume)
2659 ieee->data_hard_resume(ieee->dev);
2660
2661 netif_carrier_on(ieee->dev);
2662 }
2663 }
2664
2665 static void rtllib_start_ibss_wq(void *data)
2666 {
2667 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2668 struct rtllib_device, start_ibss_wq);
2669 /* iwconfig mode ad-hoc will schedule this and return
2670 * on the other hand this will block further iwconfig SET
2671 * operations because of the wx_sem hold.
2672 * Anyway some most set operations set a flag to speed-up
2673 * (abort) this wq (when syncro scanning) before sleeping
2674 * on the semaphore
2675 */
2676 if (!ieee->proto_started) {
2677 printk(KERN_INFO "==========oh driver down return\n");
2678 return;
2679 }
2680 down(&ieee->wx_sem);
2681
2682 if (ieee->current_network.ssid_len == 0) {
2683 strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2684 ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2685 ieee->ssid_set = 1;
2686 }
2687
2688 ieee->state = RTLLIB_NOLINK;
2689 ieee->mode = IEEE_G;
2690 /* check if we have this cell in our network list */
2691 rtllib_softmac_check_all_nets(ieee);
2692
2693
2694 /* if not then the state is not linked. Maybe the user switched to
2695 * ad-hoc mode just after being in monitor mode, or just after
2696 * being very few time in managed mode (so the card have had no
2697 * time to scan all the chans..) or we have just run up the iface
2698 * after setting ad-hoc mode. So we have to give another try..
2699 * Here, in ibss mode, should be safe to do this without extra care
2700 * (in bss mode we had to make sure no-one tried to associate when
2701 * we had just checked the ieee->state and we was going to start the
2702 * scan) because in ibss mode the rtllib_new_net function, when
2703 * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2704 * so, at worst, we waste a bit of time to initiate an unneeded syncro
2705 * scan, that will stop at the first round because it sees the state
2706 * associated.
2707 */
2708 if (ieee->state == RTLLIB_NOLINK)
2709 rtllib_start_scan_syncro(ieee, 0);
2710
2711 /* the network definitively is not here.. create a new cell */
2712 if (ieee->state == RTLLIB_NOLINK) {
2713 printk(KERN_INFO "creating new IBSS cell\n");
2714 ieee->current_network.channel = ieee->IbssStartChnl;
2715 if (!ieee->wap_set)
2716 rtllib_randomize_cell(ieee);
2717
2718 if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2719
2720 ieee->current_network.rates_len = 4;
2721
2722 ieee->current_network.rates[0] =
2723 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2724 ieee->current_network.rates[1] =
2725 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2726 ieee->current_network.rates[2] =
2727 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2728 ieee->current_network.rates[3] =
2729 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2730
2731 } else
2732 ieee->current_network.rates_len = 0;
2733
2734 if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2735 ieee->current_network.rates_ex_len = 8;
2736
2737 ieee->current_network.rates_ex[0] =
2738 RTLLIB_OFDM_RATE_6MB;
2739 ieee->current_network.rates_ex[1] =
2740 RTLLIB_OFDM_RATE_9MB;
2741 ieee->current_network.rates_ex[2] =
2742 RTLLIB_OFDM_RATE_12MB;
2743 ieee->current_network.rates_ex[3] =
2744 RTLLIB_OFDM_RATE_18MB;
2745 ieee->current_network.rates_ex[4] =
2746 RTLLIB_OFDM_RATE_24MB;
2747 ieee->current_network.rates_ex[5] =
2748 RTLLIB_OFDM_RATE_36MB;
2749 ieee->current_network.rates_ex[6] =
2750 RTLLIB_OFDM_RATE_48MB;
2751 ieee->current_network.rates_ex[7] =
2752 RTLLIB_OFDM_RATE_54MB;
2753
2754 ieee->rate = 108;
2755 } else {
2756 ieee->current_network.rates_ex_len = 0;
2757 ieee->rate = 22;
2758 }
2759
2760 ieee->current_network.qos_data.supported = 0;
2761 ieee->SetWirelessMode(ieee->dev, IEEE_G);
2762 ieee->current_network.mode = ieee->mode;
2763 ieee->current_network.atim_window = 0;
2764 ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2765 }
2766
2767 printk(KERN_INFO "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2768 if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2769 HTUseDefaultSetting(ieee);
2770 else
2771 ieee->pHTInfo->bCurrentHTSupport = false;
2772
2773 ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2774 (u8 *)(&ieee->state));
2775
2776 ieee->state = RTLLIB_LINKED;
2777 ieee->link_change(ieee->dev);
2778
2779 HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2780 if (ieee->LedControlHandler != NULL)
2781 ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2782
2783 rtllib_start_send_beacons(ieee);
2784
2785 notify_wx_assoc_event(ieee);
2786
2787 if (ieee->data_hard_resume)
2788 ieee->data_hard_resume(ieee->dev);
2789
2790 netif_carrier_on(ieee->dev);
2791
2792 up(&ieee->wx_sem);
2793 }
2794
2795 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2796 {
2797 queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, MSECS(150));
2798 }
2799
2800 /* this is called only in user context, with wx_sem held */
2801 void rtllib_start_bss(struct rtllib_device *ieee)
2802 {
2803 unsigned long flags;
2804 if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2805 if (!ieee->bGlobalDomain)
2806 return;
2807 }
2808 /* check if we have already found the net we
2809 * are interested in (if any).
2810 * if not (we are disassociated and we are not
2811 * in associating / authenticating phase) start the background scanning.
2812 */
2813 rtllib_softmac_check_all_nets(ieee);
2814
2815 /* ensure no-one start an associating process (thus setting
2816 * the ieee->state to rtllib_ASSOCIATING) while we
2817 * have just checked it and we are going to enable scan.
2818 * The rtllib_new_net function is always called with
2819 * lock held (from both rtllib_softmac_check_all_nets and
2820 * the rx path), so we cannot be in the middle of such function
2821 */
2822 spin_lock_irqsave(&ieee->lock, flags);
2823
2824 if (ieee->state == RTLLIB_NOLINK)
2825 rtllib_start_scan(ieee);
2826 spin_unlock_irqrestore(&ieee->lock, flags);
2827 }
2828
2829 static void rtllib_link_change_wq(void *data)
2830 {
2831 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2832 struct rtllib_device, link_change_wq);
2833 ieee->link_change(ieee->dev);
2834 }
2835 /* called only in userspace context */
2836 void rtllib_disassociate(struct rtllib_device *ieee)
2837 {
2838 netif_carrier_off(ieee->dev);
2839 if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2840 rtllib_reset_queue(ieee);
2841
2842 if (ieee->data_hard_stop)
2843 ieee->data_hard_stop(ieee->dev);
2844 if (IS_DOT11D_ENABLE(ieee))
2845 Dot11d_Reset(ieee);
2846 ieee->state = RTLLIB_NOLINK;
2847 ieee->is_set_key = false;
2848 ieee->wap_set = 0;
2849
2850 queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0);
2851
2852 notify_wx_assoc_event(ieee);
2853 }
2854
2855 static void rtllib_associate_retry_wq(void *data)
2856 {
2857 struct rtllib_device *ieee = container_of_dwork_rsl(data,
2858 struct rtllib_device, associate_retry_wq);
2859 unsigned long flags;
2860
2861 down(&ieee->wx_sem);
2862 if (!ieee->proto_started)
2863 goto exit;
2864
2865 if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2866 goto exit;
2867
2868 /* until we do not set the state to RTLLIB_NOLINK
2869 * there are no possibility to have someone else trying
2870 * to start an association procedure (we get here with
2871 * ieee->state = RTLLIB_ASSOCIATING).
2872 * When we set the state to RTLLIB_NOLINK it is possible
2873 * that the RX path run an attempt to associate, but
2874 * both rtllib_softmac_check_all_nets and the
2875 * RX path works with ieee->lock held so there are no
2876 * problems. If we are still disassociated then start a scan.
2877 * the lock here is necessary to ensure no one try to start
2878 * an association procedure when we have just checked the
2879 * state and we are going to start the scan.
2880 */
2881 ieee->beinretry = true;
2882 ieee->state = RTLLIB_NOLINK;
2883
2884 rtllib_softmac_check_all_nets(ieee);
2885
2886 spin_lock_irqsave(&ieee->lock, flags);
2887
2888 if (ieee->state == RTLLIB_NOLINK)
2889 rtllib_start_scan(ieee);
2890 spin_unlock_irqrestore(&ieee->lock, flags);
2891
2892 ieee->beinretry = false;
2893 exit:
2894 up(&ieee->wx_sem);
2895 }
2896
2897 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2898 {
2899 u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2900
2901 struct sk_buff *skb;
2902 struct rtllib_probe_response *b;
2903 skb = rtllib_probe_resp(ieee, broadcast_addr);
2904
2905 if (!skb)
2906 return NULL;
2907
2908 b = (struct rtllib_probe_response *) skb->data;
2909 b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2910
2911 return skb;
2912
2913 }
2914
2915 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2916 {
2917 struct sk_buff *skb;
2918 struct rtllib_probe_response *b;
2919
2920 skb = rtllib_get_beacon_(ieee);
2921 if (!skb)
2922 return NULL;
2923
2924 b = (struct rtllib_probe_response *) skb->data;
2925 b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2926
2927 if (ieee->seq_ctrl[0] == 0xFFF)
2928 ieee->seq_ctrl[0] = 0;
2929 else
2930 ieee->seq_ctrl[0]++;
2931
2932 return skb;
2933 }
2934 EXPORT_SYMBOL(rtllib_get_beacon);
2935
2936 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2937 u8 shutdown)
2938 {
2939 rtllib_stop_scan_syncro(ieee);
2940 down(&ieee->wx_sem);
2941 rtllib_stop_protocol(ieee, shutdown);
2942 up(&ieee->wx_sem);
2943 }
2944 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2945
2946
2947 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2948 {
2949 if (!ieee->proto_started)
2950 return;
2951
2952 if (shutdown) {
2953 ieee->proto_started = 0;
2954 ieee->proto_stoppping = 1;
2955 if (ieee->rtllib_ips_leave != NULL)
2956 ieee->rtllib_ips_leave(ieee->dev);
2957 }
2958
2959 rtllib_stop_send_beacons(ieee);
2960 del_timer_sync(&ieee->associate_timer);
2961 cancel_delayed_work(&ieee->associate_retry_wq);
2962 cancel_delayed_work(&ieee->start_ibss_wq);
2963 cancel_delayed_work(&ieee->link_change_wq);
2964 rtllib_stop_scan(ieee);
2965
2966 if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2967 ieee->state = RTLLIB_NOLINK;
2968
2969 if (ieee->state == RTLLIB_LINKED) {
2970 if (ieee->iw_mode == IW_MODE_INFRA)
2971 SendDisassociation(ieee, 1, deauth_lv_ss);
2972 rtllib_disassociate(ieee);
2973 }
2974
2975 if (shutdown) {
2976 RemoveAllTS(ieee);
2977 ieee->proto_stoppping = 0;
2978 }
2979 kfree(ieee->assocreq_ies);
2980 ieee->assocreq_ies = NULL;
2981 ieee->assocreq_ies_len = 0;
2982 kfree(ieee->assocresp_ies);
2983 ieee->assocresp_ies = NULL;
2984 ieee->assocresp_ies_len = 0;
2985 }
2986
2987 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2988 {
2989 down(&ieee->wx_sem);
2990 rtllib_start_protocol(ieee);
2991 up(&ieee->wx_sem);
2992 }
2993 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
2994
2995 void rtllib_start_protocol(struct rtllib_device *ieee)
2996 {
2997 short ch = 0;
2998 int i = 0;
2999
3000 rtllib_update_active_chan_map(ieee);
3001
3002 if (ieee->proto_started)
3003 return;
3004
3005 ieee->proto_started = 1;
3006
3007 if (ieee->current_network.channel == 0) {
3008 do {
3009 ch++;
3010 if (ch > MAX_CHANNEL_NUMBER)
3011 return; /* no channel found */
3012 } while (!ieee->active_channel_map[ch]);
3013 ieee->current_network.channel = ch;
3014 }
3015
3016 if (ieee->current_network.beacon_interval == 0)
3017 ieee->current_network.beacon_interval = 100;
3018
3019 for (i = 0; i < 17; i++) {
3020 ieee->last_rxseq_num[i] = -1;
3021 ieee->last_rxfrag_num[i] = -1;
3022 ieee->last_packet_time[i] = 0;
3023 }
3024
3025 if (ieee->UpdateBeaconInterruptHandler)
3026 ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
3027
3028 ieee->wmm_acm = 0;
3029 /* if the user set the MAC of the ad-hoc cell and then
3030 * switch to managed mode, shall we make sure that association
3031 * attempts does not fail just because the user provide the essid
3032 * and the nic is still checking for the AP MAC ??
3033 */
3034 if (ieee->iw_mode == IW_MODE_INFRA) {
3035 rtllib_start_bss(ieee);
3036 } else if (ieee->iw_mode == IW_MODE_ADHOC) {
3037 if (ieee->UpdateBeaconInterruptHandler)
3038 ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
3039
3040 rtllib_start_ibss(ieee);
3041
3042 } else if (ieee->iw_mode == IW_MODE_MASTER) {
3043 rtllib_start_master_bss(ieee);
3044 } else if (ieee->iw_mode == IW_MODE_MONITOR) {
3045 rtllib_start_monitor_mode(ieee);
3046 }
3047 }
3048
3049 void rtllib_softmac_init(struct rtllib_device *ieee)
3050 {
3051 int i;
3052 memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
3053
3054 ieee->state = RTLLIB_NOLINK;
3055 for (i = 0; i < 5; i++)
3056 ieee->seq_ctrl[i] = 0;
3057 ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
3058 if (!ieee->pDot11dInfo)
3059 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for DOT11D\n");
3060 ieee->LinkDetectInfo.SlotIndex = 0;
3061 ieee->LinkDetectInfo.SlotNum = 2;
3062 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
3063 ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
3064 ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
3065 ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
3066 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
3067 ieee->bIsAggregateFrame = false;
3068 ieee->assoc_id = 0;
3069 ieee->queue_stop = 0;
3070 ieee->scanning_continue = 0;
3071 ieee->softmac_features = 0;
3072 ieee->wap_set = 0;
3073 ieee->ssid_set = 0;
3074 ieee->proto_started = 0;
3075 ieee->proto_stoppping = 0;
3076 ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
3077 ieee->rate = 22;
3078 ieee->ps = RTLLIB_PS_DISABLED;
3079 ieee->sta_sleep = LPS_IS_WAKE;
3080
3081 ieee->Regdot11HTOperationalRateSet[0] = 0xff;
3082 ieee->Regdot11HTOperationalRateSet[1] = 0xff;
3083 ieee->Regdot11HTOperationalRateSet[4] = 0x01;
3084
3085 ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3086 ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3087 ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3088
3089 ieee->FirstIe_InScan = false;
3090 ieee->actscanning = false;
3091 ieee->beinretry = false;
3092 ieee->is_set_key = false;
3093 init_mgmt_queue(ieee);
3094
3095 ieee->sta_edca_param[0] = 0x0000A403;
3096 ieee->sta_edca_param[1] = 0x0000A427;
3097 ieee->sta_edca_param[2] = 0x005E4342;
3098 ieee->sta_edca_param[3] = 0x002F3262;
3099 ieee->aggregation = true;
3100 ieee->enable_rx_imm_BA = 1;
3101 ieee->tx_pending.txb = NULL;
3102
3103 _setup_timer(&ieee->associate_timer,
3104 rtllib_associate_abort_cb,
3105 (unsigned long) ieee);
3106
3107 _setup_timer(&ieee->beacon_timer,
3108 rtllib_send_beacon_cb,
3109 (unsigned long) ieee);
3110
3111
3112 ieee->wq = create_workqueue(DRV_NAME);
3113
3114 INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3115 (void *)rtllib_link_change_wq, ieee);
3116 INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3117 (void *)rtllib_start_ibss_wq, ieee);
3118 INIT_WORK_RSL(&ieee->associate_complete_wq,
3119 (void *)rtllib_associate_complete_wq, ieee);
3120 INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3121 (void *)rtllib_associate_procedure_wq, ieee);
3122 INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3123 (void *)rtllib_softmac_scan_wq, ieee);
3124 INIT_DELAYED_WORK_RSL(&ieee->softmac_hint11d_wq,
3125 (void *)rtllib_softmac_hint11d_wq, ieee);
3126 INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3127 (void *)rtllib_associate_retry_wq, ieee);
3128 INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3129 ieee);
3130
3131 sema_init(&ieee->wx_sem, 1);
3132 sema_init(&ieee->scan_sem, 1);
3133 sema_init(&ieee->ips_sem, 1);
3134
3135 spin_lock_init(&ieee->mgmt_tx_lock);
3136 spin_lock_init(&ieee->beacon_lock);
3137
3138 tasklet_init(&ieee->ps_task,
3139 (void(*)(unsigned long)) rtllib_sta_ps,
3140 (unsigned long)ieee);
3141
3142 }
3143
3144 void rtllib_softmac_free(struct rtllib_device *ieee)
3145 {
3146 down(&ieee->wx_sem);
3147 kfree(ieee->pDot11dInfo);
3148 ieee->pDot11dInfo = NULL;
3149 del_timer_sync(&ieee->associate_timer);
3150
3151 cancel_delayed_work(&ieee->associate_retry_wq);
3152 destroy_workqueue(ieee->wq);
3153 up(&ieee->wx_sem);
3154 }
3155
3156 /********************************************************
3157 * Start of WPA code. *
3158 * this is stolen from the ipw2200 driver *
3159 ********************************************************/
3160
3161
3162 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3163 {
3164 /* This is called when wpa_supplicant loads and closes the driver
3165 * interface. */
3166 printk(KERN_INFO "%s WPA\n", value ? "enabling" : "disabling");
3167 ieee->wpa_enabled = value;
3168 memset(ieee->ap_mac_addr, 0, 6);
3169 return 0;
3170 }
3171
3172
3173 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3174 int wpa_ie_len)
3175 {
3176 /* make sure WPA is enabled */
3177 rtllib_wpa_enable(ieee, 1);
3178
3179 rtllib_disassociate(ieee);
3180 }
3181
3182
3183 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3184 {
3185
3186 int ret = 0;
3187
3188 switch (command) {
3189 case IEEE_MLME_STA_DEAUTH:
3190 break;
3191
3192 case IEEE_MLME_STA_DISASSOC:
3193 rtllib_disassociate(ieee);
3194 break;
3195
3196 default:
3197 printk(KERN_INFO "Unknown MLME request: %d\n", command);
3198 ret = -EOPNOTSUPP;
3199 }
3200
3201 return ret;
3202 }
3203
3204
3205 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3206 struct ieee_param *param, int plen)
3207 {
3208 u8 *buf;
3209
3210 if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3211 (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3212 return -EINVAL;
3213
3214 if (param->u.wpa_ie.len) {
3215 buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
3216 GFP_KERNEL);
3217 if (buf == NULL)
3218 return -ENOMEM;
3219
3220 kfree(ieee->wpa_ie);
3221 ieee->wpa_ie = buf;
3222 ieee->wpa_ie_len = param->u.wpa_ie.len;
3223 } else {
3224 kfree(ieee->wpa_ie);
3225 ieee->wpa_ie = NULL;
3226 ieee->wpa_ie_len = 0;
3227 }
3228
3229 rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3230 return 0;
3231 }
3232
3233 #define AUTH_ALG_OPEN_SYSTEM 0x1
3234 #define AUTH_ALG_SHARED_KEY 0x2
3235 #define AUTH_ALG_LEAP 0x4
3236 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3237 {
3238
3239 struct rtllib_security sec = {
3240 .flags = SEC_AUTH_MODE,
3241 };
3242 int ret = 0;
3243
3244 if (value & AUTH_ALG_SHARED_KEY) {
3245 sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3246 ieee->open_wep = 0;
3247 ieee->auth_mode = 1;
3248 } else if (value & AUTH_ALG_OPEN_SYSTEM) {
3249 sec.auth_mode = WLAN_AUTH_OPEN;
3250 ieee->open_wep = 1;
3251 ieee->auth_mode = 0;
3252 } else if (value & AUTH_ALG_LEAP) {
3253 sec.auth_mode = WLAN_AUTH_LEAP >> 6;
3254 ieee->open_wep = 1;
3255 ieee->auth_mode = 2;
3256 }
3257
3258
3259 if (ieee->set_security)
3260 ieee->set_security(ieee->dev, &sec);
3261
3262 return ret;
3263 }
3264
3265 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3266 {
3267 int ret = 0;
3268 unsigned long flags;
3269
3270 switch (name) {
3271 case IEEE_PARAM_WPA_ENABLED:
3272 ret = rtllib_wpa_enable(ieee, value);
3273 break;
3274
3275 case IEEE_PARAM_TKIP_COUNTERMEASURES:
3276 ieee->tkip_countermeasures = value;
3277 break;
3278
3279 case IEEE_PARAM_DROP_UNENCRYPTED:
3280 {
3281 /* HACK:
3282 *
3283 * wpa_supplicant calls set_wpa_enabled when the driver
3284 * is loaded and unloaded, regardless of if WPA is being
3285 * used. No other calls are made which can be used to
3286 * determine if encryption will be used or not prior to
3287 * association being expected. If encryption is not being
3288 * used, drop_unencrypted is set to false, else true -- we
3289 * can use this to determine if the CAP_PRIVACY_ON bit should
3290 * be set.
3291 */
3292 struct rtllib_security sec = {
3293 .flags = SEC_ENABLED,
3294 .enabled = value,
3295 };
3296 ieee->drop_unencrypted = value;
3297 /* We only change SEC_LEVEL for open mode. Others
3298 * are set by ipw_wpa_set_encryption.
3299 */
3300 if (!value) {
3301 sec.flags |= SEC_LEVEL;
3302 sec.level = SEC_LEVEL_0;
3303 } else {
3304 sec.flags |= SEC_LEVEL;
3305 sec.level = SEC_LEVEL_1;
3306 }
3307 if (ieee->set_security)
3308 ieee->set_security(ieee->dev, &sec);
3309 break;
3310 }
3311
3312 case IEEE_PARAM_PRIVACY_INVOKED:
3313 ieee->privacy_invoked = value;
3314 break;
3315
3316 case IEEE_PARAM_AUTH_ALGS:
3317 ret = rtllib_wpa_set_auth_algs(ieee, value);
3318 break;
3319
3320 case IEEE_PARAM_IEEE_802_1X:
3321 ieee->ieee802_1x = value;
3322 break;
3323 case IEEE_PARAM_WPAX_SELECT:
3324 spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3325 spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3326 break;
3327
3328 default:
3329 printk(KERN_INFO "Unknown WPA param: %d\n", name);
3330 ret = -EOPNOTSUPP;
3331 }
3332
3333 return ret;
3334 }
3335
3336 /* implementation borrowed from hostap driver */
3337 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3338 struct ieee_param *param, int param_len,
3339 u8 is_mesh)
3340 {
3341 int ret = 0;
3342 struct lib80211_crypto_ops *ops;
3343 struct lib80211_crypt_data **crypt;
3344
3345 struct rtllib_security sec = {
3346 .flags = 0,
3347 };
3348
3349 param->u.crypt.err = 0;
3350 param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3351
3352 if (param_len !=
3353 (int) ((char *) param->u.crypt.key - (char *) param) +
3354 param->u.crypt.key_len) {
3355 printk(KERN_INFO "Len mismatch %d, %d\n", param_len,
3356 param->u.crypt.key_len);
3357 return -EINVAL;
3358 }
3359 if (is_broadcast_ether_addr(param->sta_addr)) {
3360 if (param->u.crypt.idx >= NUM_WEP_KEYS)
3361 return -EINVAL;
3362 crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
3363 } else {
3364 return -EINVAL;
3365 }
3366
3367 if (strcmp(param->u.crypt.alg, "none") == 0) {
3368 if (crypt) {
3369 sec.enabled = 0;
3370 sec.level = SEC_LEVEL_0;
3371 sec.flags |= SEC_ENABLED | SEC_LEVEL;
3372 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3373 }
3374 goto done;
3375 }
3376 sec.enabled = 1;
3377 sec.flags |= SEC_ENABLED;
3378
3379 /* IPW HW cannot build TKIP MIC, host decryption still needed. */
3380 if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3381 strcmp(param->u.crypt.alg, "R-TKIP"))
3382 goto skip_host_crypt;
3383
3384 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3385 if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3386 request_module("rtllib_crypt_wep");
3387 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3388 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3389 request_module("rtllib_crypt_tkip");
3390 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3391 } else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3392 request_module("rtllib_crypt_ccmp");
3393 ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3394 }
3395 if (ops == NULL) {
3396 printk(KERN_INFO "unknown crypto alg '%s'\n",
3397 param->u.crypt.alg);
3398 param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3399 ret = -EINVAL;
3400 goto done;
3401 }
3402 if (*crypt == NULL || (*crypt)->ops != ops) {
3403 struct lib80211_crypt_data *new_crypt;
3404
3405 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3406
3407 new_crypt = kmalloc(sizeof(*new_crypt), GFP_KERNEL);
3408 if (new_crypt == NULL) {
3409 ret = -ENOMEM;
3410 goto done;
3411 }
3412 memset(new_crypt, 0, sizeof(struct lib80211_crypt_data));
3413 new_crypt->ops = ops;
3414 if (new_crypt->ops)
3415 new_crypt->priv =
3416 new_crypt->ops->init(param->u.crypt.idx);
3417
3418 if (new_crypt->priv == NULL) {
3419 kfree(new_crypt);
3420 param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3421 ret = -EINVAL;
3422 goto done;
3423 }
3424
3425 *crypt = new_crypt;
3426 }
3427
3428 if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3429 (*crypt)->ops->set_key(param->u.crypt.key,
3430 param->u.crypt.key_len, param->u.crypt.seq,
3431 (*crypt)->priv) < 0) {
3432 printk(KERN_INFO "key setting failed\n");
3433 param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3434 ret = -EINVAL;
3435 goto done;
3436 }
3437
3438 skip_host_crypt:
3439 if (param->u.crypt.set_tx) {
3440 ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
3441 sec.active_key = param->u.crypt.idx;
3442 sec.flags |= SEC_ACTIVE_KEY;
3443 } else
3444 sec.flags &= ~SEC_ACTIVE_KEY;
3445
3446 if (param->u.crypt.alg != NULL) {
3447 memcpy(sec.keys[param->u.crypt.idx],
3448 param->u.crypt.key,
3449 param->u.crypt.key_len);
3450 sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3451 sec.flags |= (1 << param->u.crypt.idx);
3452
3453 if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3454 sec.flags |= SEC_LEVEL;
3455 sec.level = SEC_LEVEL_1;
3456 } else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3457 sec.flags |= SEC_LEVEL;
3458 sec.level = SEC_LEVEL_2;
3459 } else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3460 sec.flags |= SEC_LEVEL;
3461 sec.level = SEC_LEVEL_3;
3462 }
3463 }
3464 done:
3465 if (ieee->set_security)
3466 ieee->set_security(ieee->dev, &sec);
3467
3468 /* Do not reset port if card is in Managed mode since resetting will
3469 * generate new IEEE 802.11 authentication which may end up in looping
3470 * with IEEE 802.1X. If your hardware requires a reset after WEP
3471 * configuration (for example... Prism2), implement the reset_port in
3472 * the callbacks structures used to initialize the 802.11 stack. */
3473 if (ieee->reset_on_keychange &&
3474 ieee->iw_mode != IW_MODE_INFRA &&
3475 ieee->reset_port &&
3476 ieee->reset_port(ieee->dev)) {
3477 printk(KERN_INFO "reset_port failed\n");
3478 param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3479 return -EINVAL;
3480 }
3481
3482 return ret;
3483 }
3484
3485 inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon,
3486 struct rtllib_device *ieee, u16 asRsn)
3487 {
3488 struct sk_buff *skb;
3489 struct rtllib_disauth *disauth;
3490 int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3491
3492 skb = dev_alloc_skb(len);
3493 if (!skb)
3494 return NULL;
3495
3496 skb_reserve(skb, ieee->tx_headroom);
3497
3498 disauth = (struct rtllib_disauth *) skb_put(skb,
3499 sizeof(struct rtllib_disauth));
3500 disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3501 disauth->header.duration_id = 0;
3502
3503 memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN);
3504 memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3505 memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN);
3506
3507 disauth->reason = cpu_to_le16(asRsn);
3508 return skb;
3509 }
3510
3511 inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon,
3512 struct rtllib_device *ieee, u16 asRsn)
3513 {
3514 struct sk_buff *skb;
3515 struct rtllib_disassoc *disass;
3516 int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3517 skb = dev_alloc_skb(len);
3518
3519 if (!skb)
3520 return NULL;
3521
3522 skb_reserve(skb, ieee->tx_headroom);
3523
3524 disass = (struct rtllib_disassoc *) skb_put(skb,
3525 sizeof(struct rtllib_disassoc));
3526 disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3527 disass->header.duration_id = 0;
3528
3529 memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
3530 memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3531 memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);
3532
3533 disass->reason = cpu_to_le16(asRsn);
3534 return skb;
3535 }
3536
3537 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3538 {
3539 struct rtllib_network *beacon = &ieee->current_network;
3540 struct sk_buff *skb;
3541
3542 if (deauth)
3543 skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3544 else
3545 skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3546
3547 if (skb)
3548 softmac_mgmt_xmit(skb, ieee);
3549 }
3550
3551 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3552 {
3553 static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3554 static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3555 int wpa_ie_len = ieee->wpa_ie_len;
3556 struct lib80211_crypt_data *crypt;
3557 int encrypt;
3558
3559 crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3560 encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3561 || (ieee->host_encrypt && crypt && crypt->ops &&
3562 (0 == strcmp(crypt->ops->name, "R-WEP")));
3563
3564 /* simply judge */
3565 if (encrypt && (wpa_ie_len == 0)) {
3566 return SEC_ALG_WEP;
3567 } else if ((wpa_ie_len != 0)) {
3568 if (((ieee->wpa_ie[0] == 0xdd) &&
3569 (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3570 ((ieee->wpa_ie[0] == 0x30) &&
3571 (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3572 return SEC_ALG_CCMP;
3573 else
3574 return SEC_ALG_TKIP;
3575 } else {
3576 return SEC_ALG_NONE;
3577 }
3578 }
3579
3580 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3581 u8 is_mesh)
3582 {
3583 struct ieee_param *param;
3584 int ret = 0;
3585
3586 down(&ieee->wx_sem);
3587
3588 if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3589 ret = -EINVAL;
3590 goto out;
3591 }
3592
3593 param = kmalloc(p->length, GFP_KERNEL);
3594 if (param == NULL) {
3595 ret = -ENOMEM;
3596 goto out;
3597 }
3598 if (copy_from_user(param, p->pointer, p->length)) {
3599 kfree(param);
3600 ret = -EFAULT;
3601 goto out;
3602 }
3603
3604 switch (param->cmd) {
3605 case IEEE_CMD_SET_WPA_PARAM:
3606 ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3607 param->u.wpa_param.value);
3608 break;
3609
3610 case IEEE_CMD_SET_WPA_IE:
3611 ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3612 break;
3613
3614 case IEEE_CMD_SET_ENCRYPTION:
3615 ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3616 break;
3617
3618 case IEEE_CMD_MLME:
3619 ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3620 param->u.mlme.reason_code);
3621 break;
3622
3623 default:
3624 printk(KERN_INFO "Unknown WPA supplicant request: %d\n",
3625 param->cmd);
3626 ret = -EOPNOTSUPP;
3627 break;
3628 }
3629
3630 if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3631 ret = -EFAULT;
3632
3633 kfree(param);
3634 out:
3635 up(&ieee->wx_sem);
3636
3637 return ret;
3638 }
3639 EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
3640
3641 void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3642 {
3643 u8 OpMode;
3644 u8 i;
3645 bool bFilterOutNonAssociatedBSSID = false;
3646
3647 rtllib->state = RTLLIB_NOLINK;
3648
3649 for (i = 0; i < 6; i++)
3650 rtllib->current_network.bssid[i] = 0x55;
3651
3652 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3653 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3654 rtllib->current_network.bssid);
3655 OpMode = RT_OP_MODE_NO_LINK;
3656 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3657 rtllib_stop_send_beacons(rtllib);
3658
3659 bFilterOutNonAssociatedBSSID = false;
3660 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3661 (u8 *)(&bFilterOutNonAssociatedBSSID));
3662 notify_wx_assoc_event(rtllib);
3663
3664 }
3665
3666 void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta,
3667 u8 asRsn)
3668 {
3669 u8 i;
3670 u8 OpMode;
3671
3672 RemovePeerTS(rtllib, asSta);
3673
3674 if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) {
3675 rtllib->state = RTLLIB_NOLINK;
3676
3677 for (i = 0; i < 6; i++)
3678 rtllib->current_network.bssid[i] = 0x22;
3679 OpMode = RT_OP_MODE_NO_LINK;
3680 rtllib->OpMode = RT_OP_MODE_NO_LINK;
3681 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3682 (u8 *)(&OpMode));
3683 rtllib_disassociate(rtllib);
3684
3685 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3686 rtllib->current_network.bssid);
3687
3688 }
3689
3690 }
3691
3692 void
3693 rtllib_MgntDisconnectAP(
3694 struct rtllib_device *rtllib,
3695 u8 asRsn
3696 )
3697 {
3698 bool bFilterOutNonAssociatedBSSID = false;
3699
3700 bFilterOutNonAssociatedBSSID = false;
3701 rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3702 (u8 *)(&bFilterOutNonAssociatedBSSID));
3703 rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3704 asRsn);
3705
3706 rtllib->state = RTLLIB_NOLINK;
3707 }
3708
3709 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3710 {
3711 if (rtllib->ps != RTLLIB_PS_DISABLED)
3712 rtllib->sta_wake_up(rtllib->dev);
3713
3714 if (rtllib->state == RTLLIB_LINKED) {
3715 if (rtllib->iw_mode == IW_MODE_ADHOC)
3716 rtllib_MgntDisconnectIBSS(rtllib);
3717 if (rtllib->iw_mode == IW_MODE_INFRA)
3718 rtllib_MgntDisconnectAP(rtllib, asRsn);
3719
3720 }
3721
3722 return true;
3723 }
3724 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3725
3726 void notify_wx_assoc_event(struct rtllib_device *ieee)
3727 {
3728 union iwreq_data wrqu;
3729
3730 if (ieee->cannot_notify)
3731 return;
3732
3733 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3734 if (ieee->state == RTLLIB_LINKED)
3735 memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3736 ETH_ALEN);
3737 else {
3738
3739 printk(KERN_INFO "%s(): Tell user space disconnected\n",
3740 __func__);
3741 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
3742 }
3743 wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3744 }
3745 EXPORT_SYMBOL(notify_wx_assoc_event);
kernel source for telekom puls (alcatel/mediatek)