1 /* IEEE 802.11 SoftMAC layer
2  * Copyright (c) 2005 Andrea Merello <andreamrl@tiscali.it>
3  *
4  * Mostly extracted from the rtl8180-sa2400 driver for the
5  * in-kernel generic ieee802.11 stack.
6  *
7  * Few lines might be stolen from other part of the rtllib
8  * stack. Copyright who own it's copyright
9  *
10  * WPA code stolen from the ipw2200 driver.
11  * Copyright who own it's copyright.
12  *
13  * released under the GPL
14  */
15 
16 
17 #include "rtllib.h"
18 
19 #include <linux/random.h>
20 #include <linux/delay.h>
21 #include <linux/uaccess.h>
22 #include "dot11d.h"
23 
rtllib_is_54g(struct rtllib_network * net)24 short rtllib_is_54g(struct rtllib_network *net)
25 {
26 	return (net->rates_ex_len > 0) || (net->rates_len > 4);
27 }
28 
rtllib_is_shortslot(const struct rtllib_network * net)29 short rtllib_is_shortslot(const struct rtllib_network *net)
30 {
31 	return net->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME;
32 }
33 
34 /* returns the total length needed for pleacing the RATE MFIE
35  * tag and the EXTENDED RATE MFIE tag if needed.
36  * It encludes two bytes per tag for the tag itself and its len
37  */
rtllib_MFIE_rate_len(struct rtllib_device * ieee)38 static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
39 {
40 	unsigned int rate_len = 0;
41 
42 	if (ieee->modulation & RTLLIB_CCK_MODULATION)
43 		rate_len = RTLLIB_CCK_RATE_LEN + 2;
44 
45 	if (ieee->modulation & RTLLIB_OFDM_MODULATION)
46 
47 		rate_len += RTLLIB_OFDM_RATE_LEN + 2;
48 
49 	return rate_len;
50 }
51 
52 /* pleace the MFIE rate, tag to the memory (double) poined.
53  * Then it updates the pointer so that
54  * it points after the new MFIE tag added.
55  */
rtllib_MFIE_Brate(struct rtllib_device * ieee,u8 ** tag_p)56 static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
57 {
58 	u8 *tag = *tag_p;
59 
60 	if (ieee->modulation & RTLLIB_CCK_MODULATION) {
61 		*tag++ = MFIE_TYPE_RATES;
62 		*tag++ = 4;
63 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
64 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
65 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
66 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
67 	}
68 
69 	/* We may add an option for custom rates that specific HW
70 	 * might support */
71 	*tag_p = tag;
72 }
73 
rtllib_MFIE_Grate(struct rtllib_device * ieee,u8 ** tag_p)74 static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p)
75 {
76 	u8 *tag = *tag_p;
77 
78 	if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
79 		*tag++ = MFIE_TYPE_RATES_EX;
80 		*tag++ = 8;
81 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB;
82 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB;
83 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB;
84 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB;
85 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB;
86 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB;
87 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB;
88 		*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB;
89 	}
90 	/* We may add an option for custom rates that specific HW might
91 	 * support */
92 	*tag_p = tag;
93 }
94 
rtllib_WMM_Info(struct rtllib_device * ieee,u8 ** tag_p)95 static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
96 {
97 	u8 *tag = *tag_p;
98 
99 	*tag++ = MFIE_TYPE_GENERIC;
100 	*tag++ = 7;
101 	*tag++ = 0x00;
102 	*tag++ = 0x50;
103 	*tag++ = 0xf2;
104 	*tag++ = 0x02;
105 	*tag++ = 0x00;
106 	*tag++ = 0x01;
107 	*tag++ = MAX_SP_Len;
108 	*tag_p = tag;
109 }
110 
rtllib_TURBO_Info(struct rtllib_device * ieee,u8 ** tag_p)111 void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
112 {
113 	u8 *tag = *tag_p;
114 
115 	*tag++ = MFIE_TYPE_GENERIC;
116 	*tag++ = 7;
117 	*tag++ = 0x00;
118 	*tag++ = 0xe0;
119 	*tag++ = 0x4c;
120 	*tag++ = 0x01;
121 	*tag++ = 0x02;
122 	*tag++ = 0x11;
123 	*tag++ = 0x00;
124 
125 	*tag_p = tag;
126 	printk(KERN_ALERT "This is enable turbo mode IE process\n");
127 }
128 
enqueue_mgmt(struct rtllib_device * ieee,struct sk_buff * skb)129 static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
130 {
131 	int nh;
132 	nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
133 
134 /*
135  * if the queue is full but we have newer frames then
136  * just overwrites the oldest.
137  *
138  * if (nh == ieee->mgmt_queue_tail)
139  *		return -1;
140  */
141 	ieee->mgmt_queue_head = nh;
142 	ieee->mgmt_queue_ring[nh] = skb;
143 
144 }
145 
dequeue_mgmt(struct rtllib_device * ieee)146 static struct sk_buff *dequeue_mgmt(struct rtllib_device *ieee)
147 {
148 	struct sk_buff *ret;
149 
150 	if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head)
151 		return NULL;
152 
153 	ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail];
154 
155 	ieee->mgmt_queue_tail =
156 		(ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM;
157 
158 	return ret;
159 }
160 
init_mgmt_queue(struct rtllib_device * ieee)161 static void init_mgmt_queue(struct rtllib_device *ieee)
162 {
163 	ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
164 }
165 
166 
167 u8
MgntQuery_TxRateExcludeCCKRates(struct rtllib_device * ieee)168 MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
169 {
170 	u16	i;
171 	u8	QueryRate = 0;
172 	u8	BasicRate;
173 
174 
175 	for (i = 0; i < ieee->current_network.rates_len; i++) {
176 		BasicRate = ieee->current_network.rates[i]&0x7F;
177 		if (!rtllib_is_cck_rate(BasicRate)) {
178 			if (QueryRate == 0) {
179 				QueryRate = BasicRate;
180 			} else {
181 				if (BasicRate < QueryRate)
182 					QueryRate = BasicRate;
183 			}
184 		}
185 	}
186 
187 	if (QueryRate == 0) {
188 		QueryRate = 12;
189 		printk(KERN_INFO "No BasicRate found!!\n");
190 	}
191 	return QueryRate;
192 }
193 
MgntQuery_MgntFrameTxRate(struct rtllib_device * ieee)194 u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
195 {
196 	struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
197 	u8 rate;
198 
199 	if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
200 		rate = 0x0c;
201 	else
202 		rate = ieee->basic_rate & 0x7f;
203 
204 	if (rate == 0) {
205 		if (ieee->mode == IEEE_A ||
206 		   ieee->mode == IEEE_N_5G ||
207 		   (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
208 			rate = 0x0c;
209 		else
210 			rate = 0x02;
211 	}
212 
213 	return rate;
214 }
215 
softmac_mgmt_xmit(struct sk_buff * skb,struct rtllib_device * ieee)216 inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
217 {
218 	unsigned long flags;
219 	short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
220 	struct rtllib_hdr_3addr  *header =
221 		(struct rtllib_hdr_3addr  *) skb->data;
222 
223 	struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
224 	spin_lock_irqsave(&ieee->lock, flags);
225 
226 	/* called with 2nd param 0, no mgmt lock required */
227 	rtllib_sta_wakeup(ieee, 0);
228 
229 	if (header->frame_ctl == RTLLIB_STYPE_BEACON)
230 		tcb_desc->queue_index = BEACON_QUEUE;
231 	else
232 		tcb_desc->queue_index = MGNT_QUEUE;
233 
234 	if (ieee->disable_mgnt_queue)
235 		tcb_desc->queue_index = HIGH_QUEUE;
236 
237 	tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
238 	tcb_desc->RATRIndex = 7;
239 	tcb_desc->bTxDisableRateFallBack = 1;
240 	tcb_desc->bTxUseDriverAssingedRate = 1;
241 	if (single) {
242 		if (ieee->queue_stop) {
243 			enqueue_mgmt(ieee, skb);
244 		} else {
245 			header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
246 
247 			if (ieee->seq_ctrl[0] == 0xFFF)
248 				ieee->seq_ctrl[0] = 0;
249 			else
250 				ieee->seq_ctrl[0]++;
251 
252 			/* avoid watchdog triggers */
253 			ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
254 							   ieee->basic_rate);
255 		}
256 
257 		spin_unlock_irqrestore(&ieee->lock, flags);
258 	} else {
259 		spin_unlock_irqrestore(&ieee->lock, flags);
260 		spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
261 
262 		header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
263 
264 		if (ieee->seq_ctrl[0] == 0xFFF)
265 			ieee->seq_ctrl[0] = 0;
266 		else
267 			ieee->seq_ctrl[0]++;
268 
269 		/* check wether the managed packet queued greater than 5 */
270 		if (!ieee->check_nic_enough_desc(ieee->dev, tcb_desc->queue_index) ||
271 		    (skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) != 0) ||
272 		    (ieee->queue_stop)) {
273 			/* insert the skb packet to the management queue */
274 			/* as for the completion function, it does not need
275 			 * to check it any more.
276 			 * */
277 			printk(KERN_INFO "%s():insert to waitqueue, queue_index"
278 			       ":%d!\n", __func__, tcb_desc->queue_index);
279 			skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
280 				       skb);
281 		} else {
282 			ieee->softmac_hard_start_xmit(skb, ieee->dev);
283 		}
284 		spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
285 	}
286 }
287 
softmac_ps_mgmt_xmit(struct sk_buff * skb,struct rtllib_device * ieee)288 inline void softmac_ps_mgmt_xmit(struct sk_buff *skb,
289 		struct rtllib_device *ieee)
290 {
291 	short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
292 	struct rtllib_hdr_3addr  *header =
293 		(struct rtllib_hdr_3addr  *) skb->data;
294 	u16 fc, type, stype;
295 	struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
296 
297 	fc = header->frame_ctl;
298 	type = WLAN_FC_GET_TYPE(fc);
299 	stype = WLAN_FC_GET_STYPE(fc);
300 
301 
302 	if (stype != RTLLIB_STYPE_PSPOLL)
303 		tcb_desc->queue_index = MGNT_QUEUE;
304 	else
305 		tcb_desc->queue_index = HIGH_QUEUE;
306 
307 	if (ieee->disable_mgnt_queue)
308 		tcb_desc->queue_index = HIGH_QUEUE;
309 
310 
311 	tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
312 	tcb_desc->RATRIndex = 7;
313 	tcb_desc->bTxDisableRateFallBack = 1;
314 	tcb_desc->bTxUseDriverAssingedRate = 1;
315 	if (single) {
316 		if (type != RTLLIB_FTYPE_CTL) {
317 			header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
318 
319 			if (ieee->seq_ctrl[0] == 0xFFF)
320 				ieee->seq_ctrl[0] = 0;
321 			else
322 				ieee->seq_ctrl[0]++;
323 
324 		}
325 		/* avoid watchdog triggers */
326 		ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
327 						   ieee->basic_rate);
328 
329 	} else {
330 		if (type != RTLLIB_FTYPE_CTL) {
331 			header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
332 
333 			if (ieee->seq_ctrl[0] == 0xFFF)
334 				ieee->seq_ctrl[0] = 0;
335 			else
336 				ieee->seq_ctrl[0]++;
337 		}
338 		ieee->softmac_hard_start_xmit(skb, ieee->dev);
339 
340 	}
341 }
342 
rtllib_probe_req(struct rtllib_device * ieee)343 inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
344 {
345 	unsigned int len, rate_len;
346 	u8 *tag;
347 	struct sk_buff *skb;
348 	struct rtllib_probe_request *req;
349 
350 	len = ieee->current_network.ssid_len;
351 
352 	rate_len = rtllib_MFIE_rate_len(ieee);
353 
354 	skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
355 			    2 + len + rate_len + ieee->tx_headroom);
356 
357 	if (!skb)
358 		return NULL;
359 
360 	skb_reserve(skb, ieee->tx_headroom);
361 
362 	req = (struct rtllib_probe_request *) skb_put(skb,
363 	      sizeof(struct rtllib_probe_request));
364 	req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
365 	req->header.duration_id = 0;
366 
367 	memset(req->header.addr1, 0xff, ETH_ALEN);
368 	memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
369 	memset(req->header.addr3, 0xff, ETH_ALEN);
370 
371 	tag = (u8 *) skb_put(skb, len + 2 + rate_len);
372 
373 	*tag++ = MFIE_TYPE_SSID;
374 	*tag++ = len;
375 	memcpy(tag, ieee->current_network.ssid, len);
376 	tag += len;
377 
378 	rtllib_MFIE_Brate(ieee, &tag);
379 	rtllib_MFIE_Grate(ieee, &tag);
380 
381 	return skb;
382 }
383 
384 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
385 
rtllib_send_beacon(struct rtllib_device * ieee)386 static void rtllib_send_beacon(struct rtllib_device *ieee)
387 {
388 	struct sk_buff *skb;
389 	if (!ieee->ieee_up)
390 		return;
391 	skb = rtllib_get_beacon_(ieee);
392 
393 	if (skb) {
394 		softmac_mgmt_xmit(skb, ieee);
395 		ieee->softmac_stats.tx_beacons++;
396 	}
397 
398 	if (ieee->beacon_txing && ieee->ieee_up)
399 		mod_timer(&ieee->beacon_timer, jiffies +
400 			  (MSECS(ieee->current_network.beacon_interval - 5)));
401 }
402 
403 
rtllib_send_beacon_cb(unsigned long _ieee)404 static void rtllib_send_beacon_cb(unsigned long _ieee)
405 {
406 	struct rtllib_device *ieee =
407 		(struct rtllib_device *) _ieee;
408 	unsigned long flags;
409 
410 	spin_lock_irqsave(&ieee->beacon_lock, flags);
411 	rtllib_send_beacon(ieee);
412 	spin_unlock_irqrestore(&ieee->beacon_lock, flags);
413 }
414 
415 /*
416  * Description:
417  *	      Enable network monitor mode, all rx packets will be received.
418  */
rtllib_EnableNetMonitorMode(struct net_device * dev,bool bInitState)419 void rtllib_EnableNetMonitorMode(struct net_device *dev,
420 		bool bInitState)
421 {
422 	struct rtllib_device *ieee = netdev_priv_rsl(dev);
423 
424 	printk(KERN_INFO "========>Enter Monitor Mode\n");
425 
426 	ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
427 }
428 
429 
430 /*
431  *      Description:
432  *	      Disable network network monitor mode, only packets destinated to
433  *	      us will be received.
434  */
rtllib_DisableNetMonitorMode(struct net_device * dev,bool bInitState)435 void rtllib_DisableNetMonitorMode(struct net_device *dev,
436 		bool bInitState)
437 {
438 	struct rtllib_device *ieee = netdev_priv_rsl(dev);
439 
440 	printk(KERN_INFO "========>Exit Monitor Mode\n");
441 
442 	ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
443 }
444 
445 
446 /*
447  * Description:
448  * This enables the specialized promiscuous mode required by Intel.
449  * In this mode, Intel intends to hear traffics from/to other STAs in the
450  * same BSS. Therefore we don't have to disable checking BSSID and we only need
451  * to allow all dest. BUT: if we enable checking BSSID then we can't recv
452  * packets from other STA.
453  */
rtllib_EnableIntelPromiscuousMode(struct net_device * dev,bool bInitState)454 void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
455 		bool bInitState)
456 {
457 	bool bFilterOutNonAssociatedBSSID = false;
458 
459 	struct rtllib_device *ieee = netdev_priv_rsl(dev);
460 
461 	printk(KERN_INFO "========>Enter Intel Promiscuous Mode\n");
462 
463 	ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
464 	ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
465 			     (u8 *)&bFilterOutNonAssociatedBSSID);
466 
467 	ieee->bNetPromiscuousMode = true;
468 }
469 EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode);
470 
471 
472 /*
473  * Description:
474  *	      This disables the specialized promiscuous mode required by Intel.
475  *	      See MgntEnableIntelPromiscuousMode for detail.
476  */
rtllib_DisableIntelPromiscuousMode(struct net_device * dev,bool bInitState)477 void rtllib_DisableIntelPromiscuousMode(struct net_device *dev,
478 		bool bInitState)
479 {
480 	bool bFilterOutNonAssociatedBSSID = true;
481 
482 	struct rtllib_device *ieee = netdev_priv_rsl(dev);
483 
484 	printk(KERN_INFO "========>Exit Intel Promiscuous Mode\n");
485 
486 	ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
487 	ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
488 			     (u8 *)&bFilterOutNonAssociatedBSSID);
489 
490 	ieee->bNetPromiscuousMode = false;
491 }
492 EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode);
493 
rtllib_send_probe(struct rtllib_device * ieee,u8 is_mesh)494 static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh)
495 {
496 	struct sk_buff *skb;
497 	skb = rtllib_probe_req(ieee);
498 	if (skb) {
499 		softmac_mgmt_xmit(skb, ieee);
500 		ieee->softmac_stats.tx_probe_rq++;
501 	}
502 }
503 
504 
rtllib_send_probe_requests(struct rtllib_device * ieee,u8 is_mesh)505 void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh)
506 {
507 	if (ieee->active_scan && (ieee->softmac_features &
508 	    IEEE_SOFTMAC_PROBERQ)) {
509 		rtllib_send_probe(ieee, 0);
510 		rtllib_send_probe(ieee, 0);
511 	}
512 }
513 
rtllib_softmac_hint11d_wq(void * data)514 static void rtllib_softmac_hint11d_wq(void *data)
515 {
516 }
517 
rtllib_update_active_chan_map(struct rtllib_device * ieee)518 void rtllib_update_active_chan_map(struct rtllib_device *ieee)
519 {
520 	memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map,
521 	       MAX_CHANNEL_NUMBER+1);
522 }
523 
524 /* this performs syncro scan blocking the caller until all channels
525  * in the allowed channel map has been checked.
526  */
rtllib_softmac_scan_syncro(struct rtllib_device * ieee,u8 is_mesh)527 void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
528 {
529 	union iwreq_data wrqu;
530 	short ch = 0;
531 
532 	rtllib_update_active_chan_map(ieee);
533 
534 	ieee->be_scan_inprogress = true;
535 
536 	down(&ieee->scan_sem);
537 
538 	while (1) {
539 		do {
540 			ch++;
541 			if (ch > MAX_CHANNEL_NUMBER)
542 				goto out; /* scan completed */
543 		} while (!ieee->active_channel_map[ch]);
544 
545 		/* this fuction can be called in two situations
546 		 * 1- We have switched to ad-hoc mode and we are
547 		 *    performing a complete syncro scan before conclude
548 		 *    there are no interesting cell and to create a
549 		 *    new one. In this case the link state is
550 		 *    RTLLIB_NOLINK until we found an interesting cell.
551 		 *    If so the ieee8021_new_net, called by the RX path
552 		 *    will set the state to RTLLIB_LINKED, so we stop
553 		 *    scanning
554 		 * 2- We are linked and the root uses run iwlist scan.
555 		 *    So we switch to RTLLIB_LINKED_SCANNING to remember
556 		 *    that we are still logically linked (not interested in
557 		 *    new network events, despite for updating the net list,
558 		 *    but we are temporarly 'unlinked' as the driver shall
559 		 *    not filter RX frames and the channel is changing.
560 		 * So the only situation in witch are interested is to check
561 		 * if the state become LINKED because of the #1 situation
562 		 */
563 
564 		if (ieee->state == RTLLIB_LINKED)
565 			goto out;
566 		if (ieee->sync_scan_hurryup) {
567 			printk(KERN_INFO "============>sync_scan_hurryup out\n");
568 			goto out;
569 		}
570 
571 		ieee->set_chan(ieee->dev, ch);
572 		if (ieee->active_channel_map[ch] == 1)
573 			rtllib_send_probe_requests(ieee, 0);
574 
575 		/* this prevent excessive time wait when we
576 		 * need to wait for a syncro scan to end..
577 		 */
578 		msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME);
579 	}
580 out:
581 	ieee->actscanning = false;
582 	ieee->sync_scan_hurryup = 0;
583 
584 	if (ieee->state >= RTLLIB_LINKED) {
585 		if (IS_DOT11D_ENABLE(ieee))
586 			DOT11D_ScanComplete(ieee);
587 	}
588 	up(&ieee->scan_sem);
589 
590 	ieee->be_scan_inprogress = false;
591 
592 	memset(&wrqu, 0, sizeof(wrqu));
593 	wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
594 }
595 
rtllib_softmac_scan_wq(void * data)596 static void rtllib_softmac_scan_wq(void *data)
597 {
598 	struct rtllib_device *ieee = container_of_dwork_rsl(data,
599 				     struct rtllib_device, softmac_scan_wq);
600 	u8 last_channel = ieee->current_network.channel;
601 
602 	rtllib_update_active_chan_map(ieee);
603 
604 	if (!ieee->ieee_up)
605 		return;
606 	if (rtllib_act_scanning(ieee, true) == true)
607 		return;
608 
609 	down(&ieee->scan_sem);
610 
611 	if (ieee->eRFPowerState == eRfOff) {
612 		printk(KERN_INFO "======>%s():rf state is eRfOff, return\n",
613 		       __func__);
614 		goto out1;
615 	}
616 
617 	do {
618 		ieee->current_network.channel =
619 			(ieee->current_network.channel + 1) %
620 			MAX_CHANNEL_NUMBER;
621 		if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) {
622 			if (!ieee->active_channel_map[ieee->current_network.channel])
623 				ieee->current_network.channel = 6;
624 			goto out; /* no good chans */
625 		}
626 	} while (!ieee->active_channel_map[ieee->current_network.channel]);
627 
628 	if (ieee->scanning_continue == 0)
629 		goto out;
630 
631 	ieee->set_chan(ieee->dev, ieee->current_network.channel);
632 
633 	if (ieee->active_channel_map[ieee->current_network.channel] == 1)
634 		rtllib_send_probe_requests(ieee, 0);
635 
636 	queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq,
637 			       MSECS(RTLLIB_SOFTMAC_SCAN_TIME));
638 
639 	up(&ieee->scan_sem);
640 	return;
641 
642 out:
643 	if (IS_DOT11D_ENABLE(ieee))
644 		DOT11D_ScanComplete(ieee);
645 	ieee->current_network.channel = last_channel;
646 
647 out1:
648 	ieee->actscanning = false;
649 	ieee->scan_watch_dog = 0;
650 	ieee->scanning_continue = 0;
651 	up(&ieee->scan_sem);
652 }
653 
654 
655 
rtllib_beacons_start(struct rtllib_device * ieee)656 static void rtllib_beacons_start(struct rtllib_device *ieee)
657 {
658 	unsigned long flags;
659 	spin_lock_irqsave(&ieee->beacon_lock, flags);
660 
661 	ieee->beacon_txing = 1;
662 	rtllib_send_beacon(ieee);
663 
664 	spin_unlock_irqrestore(&ieee->beacon_lock, flags);
665 }
666 
rtllib_beacons_stop(struct rtllib_device * ieee)667 static void rtllib_beacons_stop(struct rtllib_device *ieee)
668 {
669 	unsigned long flags;
670 
671 	spin_lock_irqsave(&ieee->beacon_lock, flags);
672 
673 	ieee->beacon_txing = 0;
674 	del_timer_sync(&ieee->beacon_timer);
675 
676 	spin_unlock_irqrestore(&ieee->beacon_lock, flags);
677 
678 }
679 
680 
rtllib_stop_send_beacons(struct rtllib_device * ieee)681 void rtllib_stop_send_beacons(struct rtllib_device *ieee)
682 {
683 	if (ieee->stop_send_beacons)
684 		ieee->stop_send_beacons(ieee->dev);
685 	if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
686 		rtllib_beacons_stop(ieee);
687 }
688 EXPORT_SYMBOL(rtllib_stop_send_beacons);
689 
690 
rtllib_start_send_beacons(struct rtllib_device * ieee)691 void rtllib_start_send_beacons(struct rtllib_device *ieee)
692 {
693 	if (ieee->start_send_beacons)
694 		ieee->start_send_beacons(ieee->dev);
695 	if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
696 		rtllib_beacons_start(ieee);
697 }
698 EXPORT_SYMBOL(rtllib_start_send_beacons);
699 
700 
rtllib_softmac_stop_scan(struct rtllib_device * ieee)701 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
702 {
703 	down(&ieee->scan_sem);
704 	ieee->scan_watch_dog = 0;
705 	if (ieee->scanning_continue == 1) {
706 		ieee->scanning_continue = 0;
707 		ieee->actscanning = 0;
708 
709 		cancel_delayed_work(&ieee->softmac_scan_wq);
710 	}
711 
712 	up(&ieee->scan_sem);
713 }
714 
rtllib_stop_scan(struct rtllib_device * ieee)715 void rtllib_stop_scan(struct rtllib_device *ieee)
716 {
717 	if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
718 		rtllib_softmac_stop_scan(ieee);
719 	} else {
720 		if (ieee->rtllib_stop_hw_scan)
721 			ieee->rtllib_stop_hw_scan(ieee->dev);
722 	}
723 }
724 EXPORT_SYMBOL(rtllib_stop_scan);
725 
rtllib_stop_scan_syncro(struct rtllib_device * ieee)726 void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
727 {
728 	if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
729 			ieee->sync_scan_hurryup = 1;
730 	} else {
731 		if (ieee->rtllib_stop_hw_scan)
732 			ieee->rtllib_stop_hw_scan(ieee->dev);
733 	}
734 }
735 EXPORT_SYMBOL(rtllib_stop_scan_syncro);
736 
rtllib_act_scanning(struct rtllib_device * ieee,bool sync_scan)737 bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
738 {
739 	if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
740 		if (sync_scan)
741 			return ieee->be_scan_inprogress;
742 		else
743 			return ieee->actscanning || ieee->be_scan_inprogress;
744 	} else {
745 		return test_bit(STATUS_SCANNING, &ieee->status);
746 	}
747 }
748 EXPORT_SYMBOL(rtllib_act_scanning);
749 
750 /* called with ieee->lock held */
rtllib_start_scan(struct rtllib_device * ieee)751 static void rtllib_start_scan(struct rtllib_device *ieee)
752 {
753 	RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
754 	if (ieee->rtllib_ips_leave_wq != NULL)
755 		ieee->rtllib_ips_leave_wq(ieee->dev);
756 
757 	if (IS_DOT11D_ENABLE(ieee)) {
758 		if (IS_COUNTRY_IE_VALID(ieee))
759 			RESET_CIE_WATCHDOG(ieee);
760 	}
761 	if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
762 		if (ieee->scanning_continue == 0) {
763 			ieee->actscanning = true;
764 			ieee->scanning_continue = 1;
765 			queue_delayed_work_rsl(ieee->wq,
766 					       &ieee->softmac_scan_wq, 0);
767 		}
768 	} else {
769 		if (ieee->rtllib_start_hw_scan)
770 			ieee->rtllib_start_hw_scan(ieee->dev);
771 	}
772 }
773 
774 /* called with wx_sem held */
rtllib_start_scan_syncro(struct rtllib_device * ieee,u8 is_mesh)775 void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
776 {
777 	if (IS_DOT11D_ENABLE(ieee)) {
778 		if (IS_COUNTRY_IE_VALID(ieee))
779 			RESET_CIE_WATCHDOG(ieee);
780 	}
781 	ieee->sync_scan_hurryup = 0;
782 	if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
783 		rtllib_softmac_scan_syncro(ieee, is_mesh);
784 	} else {
785 		if (ieee->rtllib_start_hw_scan)
786 			ieee->rtllib_start_hw_scan(ieee->dev);
787 	}
788 }
789 EXPORT_SYMBOL(rtllib_start_scan_syncro);
790 
rtllib_authentication_req(struct rtllib_network * beacon,struct rtllib_device * ieee,int challengelen,u8 * daddr)791 inline struct sk_buff *rtllib_authentication_req(struct rtllib_network *beacon,
792 	struct rtllib_device *ieee, int challengelen, u8 *daddr)
793 {
794 	struct sk_buff *skb;
795 	struct rtllib_authentication *auth;
796 	int  len = 0;
797 	len = sizeof(struct rtllib_authentication) + challengelen +
798 		     ieee->tx_headroom + 4;
799 	skb = dev_alloc_skb(len);
800 
801 	if (!skb)
802 		return NULL;
803 
804 	skb_reserve(skb, ieee->tx_headroom);
805 
806 	auth = (struct rtllib_authentication *)
807 		skb_put(skb, sizeof(struct rtllib_authentication));
808 
809 	auth->header.frame_ctl = RTLLIB_STYPE_AUTH;
810 	if (challengelen)
811 		auth->header.frame_ctl |= RTLLIB_FCTL_WEP;
812 
813 	auth->header.duration_id = 0x013a;
814 	memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN);
815 	memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
816 	memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN);
817 	if (ieee->auth_mode == 0)
818 		auth->algorithm = WLAN_AUTH_OPEN;
819 	else if (ieee->auth_mode == 1)
820 		auth->algorithm = WLAN_AUTH_SHARED_KEY;
821 	else if (ieee->auth_mode == 2)
822 		auth->algorithm = WLAN_AUTH_OPEN;
823 	auth->transaction = cpu_to_le16(ieee->associate_seq);
824 	ieee->associate_seq++;
825 
826 	auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
827 
828 	return skb;
829 }
830 
rtllib_probe_resp(struct rtllib_device * ieee,u8 * dest)831 static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, u8 *dest)
832 {
833 	u8 *tag;
834 	int beacon_size;
835 	struct rtllib_probe_response *beacon_buf;
836 	struct sk_buff *skb = NULL;
837 	int encrypt;
838 	int atim_len, erp_len;
839 	struct lib80211_crypt_data *crypt;
840 
841 	char *ssid = ieee->current_network.ssid;
842 	int ssid_len = ieee->current_network.ssid_len;
843 	int rate_len = ieee->current_network.rates_len+2;
844 	int rate_ex_len = ieee->current_network.rates_ex_len;
845 	int wpa_ie_len = ieee->wpa_ie_len;
846 	u8 erpinfo_content = 0;
847 
848 	u8 *tmp_ht_cap_buf = NULL;
849 	u8 tmp_ht_cap_len = 0;
850 	u8 *tmp_ht_info_buf = NULL;
851 	u8 tmp_ht_info_len = 0;
852 	struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
853 	u8 *tmp_generic_ie_buf = NULL;
854 	u8 tmp_generic_ie_len = 0;
855 
856 	if (rate_ex_len > 0)
857 		rate_ex_len += 2;
858 
859 	if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
860 		atim_len = 4;
861 	else
862 		atim_len = 0;
863 
864 	if ((ieee->current_network.mode == IEEE_G) ||
865 	   (ieee->current_network.mode == IEEE_N_24G &&
866 	   ieee->pHTInfo->bCurSuppCCK)) {
867 		erp_len = 3;
868 		erpinfo_content = 0;
869 		if (ieee->current_network.buseprotection)
870 			erpinfo_content |= ERP_UseProtection;
871 	} else
872 		erp_len = 0;
873 
874 	crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
875 	encrypt = ieee->host_encrypt && crypt && crypt->ops &&
876 		((0 == strcmp(crypt->ops->name, "R-WEP") || wpa_ie_len));
877 	if (ieee->pHTInfo->bCurrentHTSupport) {
878 		tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
879 		tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
880 		tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
881 		tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
882 		HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
883 					     &tmp_ht_cap_len, encrypt, false);
884 		HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
885 				       encrypt);
886 
887 		if (pHTInfo->bRegRT2RTAggregation) {
888 			tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
889 			tmp_generic_ie_len =
890 				 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
891 			HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
892 						   &tmp_generic_ie_len);
893 		}
894 	}
895 
896 	beacon_size = sizeof(struct rtllib_probe_response)+2+
897 		ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
898 		+ wpa_ie_len + ieee->tx_headroom;
899 	skb = dev_alloc_skb(beacon_size);
900 	if (!skb)
901 		return NULL;
902 
903 	skb_reserve(skb, ieee->tx_headroom);
904 
905 	beacon_buf = (struct rtllib_probe_response *) skb_put(skb,
906 		     (beacon_size - ieee->tx_headroom));
907 	memcpy(beacon_buf->header.addr1, dest, ETH_ALEN);
908 	memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
909 	memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN);
910 
911 	beacon_buf->header.duration_id = 0;
912 	beacon_buf->beacon_interval =
913 		cpu_to_le16(ieee->current_network.beacon_interval);
914 	beacon_buf->capability =
915 		cpu_to_le16(ieee->current_network.capability &
916 		WLAN_CAPABILITY_IBSS);
917 	beacon_buf->capability |=
918 		cpu_to_le16(ieee->current_network.capability &
919 		WLAN_CAPABILITY_SHORT_PREAMBLE);
920 
921 	if (ieee->short_slot && (ieee->current_network.capability &
922 	    WLAN_CAPABILITY_SHORT_SLOT_TIME))
923 		cpu_to_le16((beacon_buf->capability |=
924 				 WLAN_CAPABILITY_SHORT_SLOT_TIME));
925 
926 	crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
927 	if (encrypt)
928 		beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
929 
930 
931 	beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
932 	beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
933 	beacon_buf->info_element[0].len = ssid_len;
934 
935 	tag = (u8 *) beacon_buf->info_element[0].data;
936 
937 	memcpy(tag, ssid, ssid_len);
938 
939 	tag += ssid_len;
940 
941 	*(tag++) = MFIE_TYPE_RATES;
942 	*(tag++) = rate_len-2;
943 	memcpy(tag, ieee->current_network.rates, rate_len-2);
944 	tag += rate_len-2;
945 
946 	*(tag++) = MFIE_TYPE_DS_SET;
947 	*(tag++) = 1;
948 	*(tag++) = ieee->current_network.channel;
949 
950 	if (atim_len) {
951 		u16 val16;
952 		*(tag++) = MFIE_TYPE_IBSS_SET;
953 		*(tag++) = 2;
954 		 val16 = cpu_to_le16(ieee->current_network.atim_window);
955 		memcpy((u8 *)tag, (u8 *)&val16, 2);
956 		tag += 2;
957 	}
958 
959 	if (erp_len) {
960 		*(tag++) = MFIE_TYPE_ERP;
961 		*(tag++) = 1;
962 		*(tag++) = erpinfo_content;
963 	}
964 	if (rate_ex_len) {
965 		*(tag++) = MFIE_TYPE_RATES_EX;
966 		*(tag++) = rate_ex_len-2;
967 		memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
968 		tag += rate_ex_len-2;
969 	}
970 
971 	if (wpa_ie_len) {
972 		if (ieee->iw_mode == IW_MODE_ADHOC)
973 			memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
974 		memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
975 		tag += ieee->wpa_ie_len;
976 	}
977 	return skb;
978 }
979 
rtllib_assoc_resp(struct rtllib_device * ieee,u8 * dest)980 static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
981 {
982 	struct sk_buff *skb;
983 	u8 *tag;
984 
985 	struct lib80211_crypt_data *crypt;
986 	struct rtllib_assoc_response_frame *assoc;
987 	short encrypt;
988 
989 	unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
990 	int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
991 		  ieee->tx_headroom;
992 
993 	skb = dev_alloc_skb(len);
994 
995 	if (!skb)
996 		return NULL;
997 
998 	skb_reserve(skb, ieee->tx_headroom);
999 
1000 	assoc = (struct rtllib_assoc_response_frame *)
1001 		skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
1002 
1003 	assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
1004 	memcpy(assoc->header.addr1, dest, ETH_ALEN);
1005 	memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1006 	memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1007 	assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
1008 		WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
1009 
1010 
1011 	if (ieee->short_slot)
1012 		assoc->capability |=
1013 				 cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1014 
1015 	if (ieee->host_encrypt)
1016 		crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1017 	else
1018 		crypt = NULL;
1019 
1020 	encrypt = (crypt && crypt->ops);
1021 
1022 	if (encrypt)
1023 		assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1024 
1025 	assoc->status = 0;
1026 	assoc->aid = cpu_to_le16(ieee->assoc_id);
1027 	if (ieee->assoc_id == 0x2007)
1028 		ieee->assoc_id = 0;
1029 	else
1030 		ieee->assoc_id++;
1031 
1032 	tag = (u8 *) skb_put(skb, rate_len);
1033 	rtllib_MFIE_Brate(ieee, &tag);
1034 	rtllib_MFIE_Grate(ieee, &tag);
1035 
1036 	return skb;
1037 }
1038 
rtllib_auth_resp(struct rtllib_device * ieee,int status,u8 * dest)1039 static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
1040 				 u8 *dest)
1041 {
1042 	struct sk_buff *skb = NULL;
1043 	struct rtllib_authentication *auth;
1044 	int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
1045 	skb = dev_alloc_skb(len);
1046 	if (!skb)
1047 		return NULL;
1048 
1049 	skb->len = sizeof(struct rtllib_authentication);
1050 
1051 	skb_reserve(skb, ieee->tx_headroom);
1052 
1053 	auth = (struct rtllib_authentication *)
1054 		skb_put(skb, sizeof(struct rtllib_authentication));
1055 
1056 	auth->status = cpu_to_le16(status);
1057 	auth->transaction = cpu_to_le16(2);
1058 	auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
1059 
1060 	memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
1061 	memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1062 	memcpy(auth->header.addr1, dest, ETH_ALEN);
1063 	auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
1064 	return skb;
1065 
1066 
1067 }
1068 
rtllib_null_func(struct rtllib_device * ieee,short pwr)1069 static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
1070 {
1071 	struct sk_buff *skb;
1072 	struct rtllib_hdr_3addr *hdr;
1073 
1074 	skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
1075 	if (!skb)
1076 		return NULL;
1077 
1078 	skb_reserve(skb, ieee->tx_headroom);
1079 
1080 	hdr = (struct rtllib_hdr_3addr *)skb_put(skb,
1081 	      sizeof(struct rtllib_hdr_3addr));
1082 
1083 	memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN);
1084 	memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN);
1085 	memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN);
1086 
1087 	hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
1088 		RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
1089 		(pwr ? RTLLIB_FCTL_PM : 0));
1090 
1091 	return skb;
1092 
1093 
1094 }
1095 
rtllib_pspoll_func(struct rtllib_device * ieee)1096 static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
1097 {
1098 	struct sk_buff *skb;
1099 	struct rtllib_pspoll_hdr *hdr;
1100 
1101 	skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
1102 	if (!skb)
1103 		return NULL;
1104 
1105 	skb_reserve(skb, ieee->tx_headroom);
1106 
1107 	hdr = (struct rtllib_pspoll_hdr *)skb_put(skb,
1108 	      sizeof(struct rtllib_pspoll_hdr));
1109 
1110 	memcpy(hdr->bssid, ieee->current_network.bssid, ETH_ALEN);
1111 	memcpy(hdr->ta, ieee->dev->dev_addr, ETH_ALEN);
1112 
1113 	hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
1114 	hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
1115 			 RTLLIB_FCTL_PM);
1116 
1117 	return skb;
1118 
1119 }
1120 
rtllib_resp_to_assoc_rq(struct rtllib_device * ieee,u8 * dest)1121 static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
1122 {
1123 	struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
1124 
1125 	if (buf)
1126 		softmac_mgmt_xmit(buf, ieee);
1127 }
1128 
1129 
rtllib_resp_to_auth(struct rtllib_device * ieee,int s,u8 * dest)1130 static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
1131 {
1132 	struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
1133 
1134 	if (buf)
1135 		softmac_mgmt_xmit(buf, ieee);
1136 }
1137 
1138 
rtllib_resp_to_probe(struct rtllib_device * ieee,u8 * dest)1139 static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
1140 {
1141 
1142 	struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
1143 	if (buf)
1144 		softmac_mgmt_xmit(buf, ieee);
1145 }
1146 
1147 
SecIsInPMKIDList(struct rtllib_device * ieee,u8 * bssid)1148 inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
1149 {
1150 	int i = 0;
1151 
1152 	do {
1153 		if ((ieee->PMKIDList[i].bUsed) &&
1154 		   (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
1155 			break;
1156 		else
1157 			i++;
1158 	} while (i < NUM_PMKID_CACHE);
1159 
1160 	if (i == NUM_PMKID_CACHE)
1161 		i = -1;
1162 	return i;
1163 }
1164 
rtllib_association_req(struct rtllib_network * beacon,struct rtllib_device * ieee)1165 inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon,
1166 					      struct rtllib_device *ieee)
1167 {
1168 	struct sk_buff *skb;
1169 	struct rtllib_assoc_request_frame *hdr;
1170 	u8 *tag, *ies;
1171 	int i;
1172 	u8 *ht_cap_buf = NULL;
1173 	u8 ht_cap_len = 0;
1174 	u8 *realtek_ie_buf = NULL;
1175 	u8 realtek_ie_len = 0;
1176 	int wpa_ie_len = ieee->wpa_ie_len;
1177 	int wps_ie_len = ieee->wps_ie_len;
1178 	unsigned int ckip_ie_len = 0;
1179 	unsigned int ccxrm_ie_len = 0;
1180 	unsigned int cxvernum_ie_len = 0;
1181 	struct lib80211_crypt_data *crypt;
1182 	int encrypt;
1183 	int	PMKCacheIdx;
1184 
1185 	unsigned int rate_len = (beacon->rates_len ?
1186 				(beacon->rates_len + 2) : 0) +
1187 				(beacon->rates_ex_len ? (beacon->rates_ex_len) +
1188 				2 : 0);
1189 
1190 	unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
1191 	unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
1192 
1193 	int len = 0;
1194 	crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
1195 	if (crypt != NULL)
1196 		encrypt = ieee->host_encrypt && crypt && crypt->ops &&
1197 			  ((0 == strcmp(crypt->ops->name, "R-WEP") ||
1198 			  wpa_ie_len));
1199 	else
1200 		encrypt = 0;
1201 
1202 	if ((ieee->rtllib_ap_sec_type &&
1203 	    (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
1204 	    (ieee->bForcedBgMode == true)) {
1205 		ieee->pHTInfo->bEnableHT = 0;
1206 		ieee->mode = WIRELESS_MODE_G;
1207 	}
1208 
1209 	if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1210 		ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
1211 		ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
1212 		HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
1213 					     encrypt, true);
1214 		if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1215 			realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
1216 			realtek_ie_len =
1217 				 sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
1218 			HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
1219 						   &realtek_ie_len);
1220 		}
1221 	}
1222 
1223 	if (beacon->bCkipSupported)
1224 		ckip_ie_len = 30+2;
1225 	if (beacon->bCcxRmEnable)
1226 		ccxrm_ie_len = 6+2;
1227 	if (beacon->BssCcxVerNumber >= 2)
1228 		cxvernum_ie_len = 5+2;
1229 
1230 	PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
1231 	if (PMKCacheIdx >= 0) {
1232 		wpa_ie_len += 18;
1233 		printk(KERN_INFO "[PMK cache]: WPA2 IE length: %x\n",
1234 		       wpa_ie_len);
1235 	}
1236 	len = sizeof(struct rtllib_assoc_request_frame) + 2
1237 		+ beacon->ssid_len
1238 		+ rate_len
1239 		+ wpa_ie_len
1240 		+ wps_ie_len
1241 		+ wmm_info_len
1242 		+ turbo_info_len
1243 		+ ht_cap_len
1244 		+ realtek_ie_len
1245 		+ ckip_ie_len
1246 		+ ccxrm_ie_len
1247 		+ cxvernum_ie_len
1248 		+ ieee->tx_headroom;
1249 
1250 	skb = dev_alloc_skb(len);
1251 
1252 	if (!skb)
1253 		return NULL;
1254 
1255 	skb_reserve(skb, ieee->tx_headroom);
1256 
1257 	hdr = (struct rtllib_assoc_request_frame *)
1258 		skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
1259 
1260 
1261 	hdr->header.frame_ctl = RTLLIB_STYPE_ASSOC_REQ;
1262 	hdr->header.duration_id = 37;
1263 	memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN);
1264 	memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1265 	memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN);
1266 
1267 	memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);
1268 
1269 	hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
1270 	if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
1271 		hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1272 
1273 	if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1274 		hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1275 
1276 	if (ieee->short_slot &&
1277 	   (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
1278 		hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
1279 
1280 
1281 	hdr->listen_interval = beacon->listen_interval;
1282 
1283 	hdr->info_element[0].id = MFIE_TYPE_SSID;
1284 
1285 	hdr->info_element[0].len = beacon->ssid_len;
1286 	tag = skb_put(skb, beacon->ssid_len);
1287 	memcpy(tag, beacon->ssid, beacon->ssid_len);
1288 
1289 	tag = skb_put(skb, rate_len);
1290 
1291 	if (beacon->rates_len) {
1292 		*tag++ = MFIE_TYPE_RATES;
1293 		*tag++ = beacon->rates_len;
1294 		for (i = 0; i < beacon->rates_len; i++)
1295 			*tag++ = beacon->rates[i];
1296 	}
1297 
1298 	if (beacon->rates_ex_len) {
1299 		*tag++ = MFIE_TYPE_RATES_EX;
1300 		*tag++ = beacon->rates_ex_len;
1301 		for (i = 0; i < beacon->rates_ex_len; i++)
1302 			*tag++ = beacon->rates_ex[i];
1303 	}
1304 
1305 	if (beacon->bCkipSupported) {
1306 		static u8	AironetIeOui[] = {0x00, 0x01, 0x66};
1307 		u8	CcxAironetBuf[30];
1308 		struct octet_string osCcxAironetIE;
1309 
1310 		memset(CcxAironetBuf, 0, 30);
1311 		osCcxAironetIE.Octet = CcxAironetBuf;
1312 		osCcxAironetIE.Length = sizeof(CcxAironetBuf);
1313 		memcpy(osCcxAironetIE.Octet, AironetIeOui,
1314 		       sizeof(AironetIeOui));
1315 
1316 		osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
1317 					 (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
1318 		tag = skb_put(skb, ckip_ie_len);
1319 		*tag++ = MFIE_TYPE_AIRONET;
1320 		*tag++ = osCcxAironetIE.Length;
1321 		memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
1322 		tag += osCcxAironetIE.Length;
1323 	}
1324 
1325 	if (beacon->bCcxRmEnable) {
1326 		static u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 0x00};
1327 		struct octet_string osCcxRmCap;
1328 
1329 		osCcxRmCap.Octet = CcxRmCapBuf;
1330 		osCcxRmCap.Length = sizeof(CcxRmCapBuf);
1331 		tag = skb_put(skb, ccxrm_ie_len);
1332 		*tag++ = MFIE_TYPE_GENERIC;
1333 		*tag++ = osCcxRmCap.Length;
1334 		memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
1335 		tag += osCcxRmCap.Length;
1336 	}
1337 
1338 	if (beacon->BssCcxVerNumber >= 2) {
1339 		u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
1340 		struct octet_string osCcxVerNum;
1341 		CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
1342 		osCcxVerNum.Octet = CcxVerNumBuf;
1343 		osCcxVerNum.Length = sizeof(CcxVerNumBuf);
1344 		tag = skb_put(skb, cxvernum_ie_len);
1345 		*tag++ = MFIE_TYPE_GENERIC;
1346 		*tag++ = osCcxVerNum.Length;
1347 		memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
1348 		tag += osCcxVerNum.Length;
1349 	}
1350 	if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1351 		if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
1352 			tag = skb_put(skb, ht_cap_len);
1353 			*tag++ = MFIE_TYPE_HT_CAP;
1354 			*tag++ = ht_cap_len - 2;
1355 			memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1356 			tag += ht_cap_len - 2;
1357 		}
1358 	}
1359 
1360 	if (wpa_ie_len) {
1361 		tag = skb_put(skb, ieee->wpa_ie_len);
1362 		memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
1363 
1364 		if (PMKCacheIdx >= 0) {
1365 			tag = skb_put(skb, 18);
1366 			*tag = 1;
1367 			*(tag + 1) = 0;
1368 			memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
1369 			       16);
1370 		}
1371 	}
1372 	if (wmm_info_len) {
1373 		tag = skb_put(skb, wmm_info_len);
1374 		rtllib_WMM_Info(ieee, &tag);
1375 	}
1376 
1377 	if (wps_ie_len && ieee->wps_ie) {
1378 		tag = skb_put(skb, wps_ie_len);
1379 		memcpy(tag, ieee->wps_ie, wps_ie_len);
1380 	}
1381 
1382 	tag = skb_put(skb, turbo_info_len);
1383 	if (turbo_info_len)
1384 		rtllib_TURBO_Info(ieee, &tag);
1385 
1386 	if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1387 		if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
1388 			tag = skb_put(skb, ht_cap_len);
1389 			*tag++ = MFIE_TYPE_GENERIC;
1390 			*tag++ = ht_cap_len - 2;
1391 			memcpy(tag, ht_cap_buf, ht_cap_len - 2);
1392 			tag += ht_cap_len - 2;
1393 		}
1394 
1395 		if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
1396 			tag = skb_put(skb, realtek_ie_len);
1397 			*tag++ = MFIE_TYPE_GENERIC;
1398 			*tag++ = realtek_ie_len - 2;
1399 			memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
1400 		}
1401 	}
1402 
1403 	kfree(ieee->assocreq_ies);
1404 	ieee->assocreq_ies = NULL;
1405 	ies = &(hdr->info_element[0].id);
1406 	ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
1407 	ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
1408 	if (ieee->assocreq_ies)
1409 		memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
1410 	else {
1411 		printk(KERN_INFO "%s()Warning: can't alloc memory for assocreq"
1412 		       "_ies\n", __func__);
1413 		ieee->assocreq_ies_len = 0;
1414 	}
1415 	return skb;
1416 }
1417 
rtllib_associate_abort(struct rtllib_device * ieee)1418 void rtllib_associate_abort(struct rtllib_device *ieee)
1419 {
1420 
1421 	unsigned long flags;
1422 	spin_lock_irqsave(&ieee->lock, flags);
1423 
1424 	ieee->associate_seq++;
1425 
1426 	/* don't scan, and avoid to have the RX path possibily
1427 	 * try again to associate. Even do not react to AUTH or
1428 	 * ASSOC response. Just wait for the retry wq to be scheduled.
1429 	 * Here we will check if there are good nets to associate
1430 	 * with, so we retry or just get back to NO_LINK and scanning
1431 	 */
1432 	if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
1433 		RTLLIB_DEBUG_MGMT("Authentication failed\n");
1434 		ieee->softmac_stats.no_auth_rs++;
1435 	} else {
1436 		RTLLIB_DEBUG_MGMT("Association failed\n");
1437 		ieee->softmac_stats.no_ass_rs++;
1438 	}
1439 
1440 	ieee->state = RTLLIB_ASSOCIATING_RETRY;
1441 
1442 	queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq,
1443 			   RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
1444 
1445 	spin_unlock_irqrestore(&ieee->lock, flags);
1446 }
1447 
rtllib_associate_abort_cb(unsigned long dev)1448 static void rtllib_associate_abort_cb(unsigned long dev)
1449 {
1450 	rtllib_associate_abort((struct rtllib_device *) dev);
1451 }
1452 
rtllib_associate_step1(struct rtllib_device * ieee,u8 * daddr)1453 static void rtllib_associate_step1(struct rtllib_device *ieee, u8 * daddr)
1454 {
1455 	struct rtllib_network *beacon = &ieee->current_network;
1456 	struct sk_buff *skb;
1457 
1458 	RTLLIB_DEBUG_MGMT("Stopping scan\n");
1459 
1460 	ieee->softmac_stats.tx_auth_rq++;
1461 
1462 	skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
1463 
1464 	if (!skb)
1465 		rtllib_associate_abort(ieee);
1466 	else {
1467 		ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING ;
1468 		RTLLIB_DEBUG_MGMT("Sending authentication request\n");
1469 		softmac_mgmt_xmit(skb, ieee);
1470 		if (!timer_pending(&ieee->associate_timer)) {
1471 			ieee->associate_timer.expires = jiffies + (HZ / 2);
1472 			add_timer(&ieee->associate_timer);
1473 		}
1474 	}
1475 }
1476 
rtllib_auth_challenge(struct rtllib_device * ieee,u8 * challenge,int chlen)1477 static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, int chlen)
1478 {
1479 	u8 *c;
1480 	struct sk_buff *skb;
1481 	struct rtllib_network *beacon = &ieee->current_network;
1482 
1483 	ieee->associate_seq++;
1484 	ieee->softmac_stats.tx_auth_rq++;
1485 
1486 	skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
1487 
1488 	if (!skb)
1489 		rtllib_associate_abort(ieee);
1490 	else {
1491 		c = skb_put(skb, chlen+2);
1492 		*(c++) = MFIE_TYPE_CHALLENGE;
1493 		*(c++) = chlen;
1494 		memcpy(c, challenge, chlen);
1495 
1496 		RTLLIB_DEBUG_MGMT("Sending authentication challenge "
1497 				  "response\n");
1498 
1499 		rtllib_encrypt_fragment(ieee, skb,
1500 					sizeof(struct rtllib_hdr_3addr));
1501 
1502 		softmac_mgmt_xmit(skb, ieee);
1503 		mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1504 	}
1505 	kfree(challenge);
1506 }
1507 
rtllib_associate_step2(struct rtllib_device * ieee)1508 static void rtllib_associate_step2(struct rtllib_device *ieee)
1509 {
1510 	struct sk_buff *skb;
1511 	struct rtllib_network *beacon = &ieee->current_network;
1512 
1513 	del_timer_sync(&ieee->associate_timer);
1514 
1515 	RTLLIB_DEBUG_MGMT("Sending association request\n");
1516 
1517 	ieee->softmac_stats.tx_ass_rq++;
1518 	skb = rtllib_association_req(beacon, ieee);
1519 	if (!skb)
1520 		rtllib_associate_abort(ieee);
1521 	else {
1522 		softmac_mgmt_xmit(skb, ieee);
1523 		mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
1524 	}
1525 }
1526 
1527 #define CANCELLED  2
rtllib_associate_complete_wq(void * data)1528 static void rtllib_associate_complete_wq(void *data)
1529 {
1530 	struct rtllib_device *ieee = (struct rtllib_device *)
1531 				     container_of_work_rsl(data,
1532 				     struct rtllib_device,
1533 				     associate_complete_wq);
1534 	struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1535 					(&(ieee->PowerSaveControl));
1536 	printk(KERN_INFO "Associated successfully\n");
1537 	if (ieee->is_silent_reset == 0) {
1538 		printk(KERN_INFO "normal associate\n");
1539 		notify_wx_assoc_event(ieee);
1540 	}
1541 
1542 	netif_carrier_on(ieee->dev);
1543 	ieee->is_roaming = false;
1544 	if (rtllib_is_54g(&ieee->current_network) &&
1545 	   (ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1546 		ieee->rate = 108;
1547 		printk(KERN_INFO"Using G rates:%d\n", ieee->rate);
1548 	} else {
1549 		ieee->rate = 22;
1550 		ieee->SetWirelessMode(ieee->dev, IEEE_B);
1551 		printk(KERN_INFO"Using B rates:%d\n", ieee->rate);
1552 	}
1553 	if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
1554 		printk(KERN_INFO "Successfully associated, ht enabled\n");
1555 		HTOnAssocRsp(ieee);
1556 	} else {
1557 		printk(KERN_INFO "Successfully associated, ht not "
1558 		       "enabled(%d, %d)\n",
1559 		       ieee->pHTInfo->bCurrentHTSupport,
1560 		       ieee->pHTInfo->bEnableHT);
1561 		memset(ieee->dot11HTOperationalRateSet, 0, 16);
1562 	}
1563 	ieee->LinkDetectInfo.SlotNum = 2 * (1 +
1564 				       ieee->current_network.beacon_interval /
1565 				       500);
1566 	if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
1567 	    ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
1568 		ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
1569 		ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
1570 	}
1571 	pPSC->LpsIdleCount = 0;
1572 	ieee->link_change(ieee->dev);
1573 
1574 	if (ieee->is_silent_reset == 1) {
1575 		printk(KERN_INFO "silent reset associate\n");
1576 		ieee->is_silent_reset = 0;
1577 	}
1578 
1579 	if (ieee->data_hard_resume)
1580 		ieee->data_hard_resume(ieee->dev);
1581 
1582 }
1583 
rtllib_sta_send_associnfo(struct rtllib_device * ieee)1584 static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
1585 {
1586 }
1587 
rtllib_associate_complete(struct rtllib_device * ieee)1588 static void rtllib_associate_complete(struct rtllib_device *ieee)
1589 {
1590 	del_timer_sync(&ieee->associate_timer);
1591 
1592 	ieee->state = RTLLIB_LINKED;
1593 	rtllib_sta_send_associnfo(ieee);
1594 
1595 	queue_work_rsl(ieee->wq, &ieee->associate_complete_wq);
1596 }
1597 
rtllib_associate_procedure_wq(void * data)1598 static void rtllib_associate_procedure_wq(void *data)
1599 {
1600 	struct rtllib_device *ieee = container_of_dwork_rsl(data,
1601 				     struct rtllib_device,
1602 				     associate_procedure_wq);
1603 	rtllib_stop_scan_syncro(ieee);
1604 	if (ieee->rtllib_ips_leave != NULL)
1605 		ieee->rtllib_ips_leave(ieee->dev);
1606 	down(&ieee->wx_sem);
1607 
1608 	if (ieee->data_hard_stop)
1609 		ieee->data_hard_stop(ieee->dev);
1610 
1611 	rtllib_stop_scan(ieee);
1612 	RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
1613 		 ieee->current_network.channel);
1614 	HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1615 	if (ieee->eRFPowerState == eRfOff) {
1616 		RT_TRACE(COMP_DBG, "=============>%s():Rf state is eRfOff,"
1617 			 " schedule ipsleave wq again,return\n", __func__);
1618 		if (ieee->rtllib_ips_leave_wq != NULL)
1619 			ieee->rtllib_ips_leave_wq(ieee->dev);
1620 		up(&ieee->wx_sem);
1621 		return;
1622 	}
1623 	ieee->associate_seq = 1;
1624 
1625 	rtllib_associate_step1(ieee, ieee->current_network.bssid);
1626 
1627 	up(&ieee->wx_sem);
1628 }
1629 
rtllib_softmac_new_net(struct rtllib_device * ieee,struct rtllib_network * net)1630 inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
1631 				   struct rtllib_network *net)
1632 {
1633 	u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
1634 	int tmp_ssid_len = 0;
1635 
1636 	short apset, ssidset, ssidbroad, apmatch, ssidmatch;
1637 
1638 	/* we are interested in new new only if we are not associated
1639 	 * and we are not associating / authenticating
1640 	 */
1641 	if (ieee->state != RTLLIB_NOLINK)
1642 		return;
1643 
1644 	if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
1645 	    WLAN_CAPABILITY_ESS))
1646 		return;
1647 
1648 	if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
1649 	     WLAN_CAPABILITY_IBSS))
1650 		return;
1651 
1652 	if ((ieee->iw_mode == IW_MODE_ADHOC) &&
1653 	    (net->channel > ieee->ibss_maxjoin_chal))
1654 		return;
1655 	if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
1656 		/* if the user specified the AP MAC, we need also the essid
1657 		 * This could be obtained by beacons or, if the network does not
1658 		 * broadcast it, it can be put manually.
1659 		 */
1660 		apset = ieee->wap_set;
1661 		ssidset = ieee->ssid_set;
1662 		ssidbroad =  !(net->ssid_len == 0 || net->ssid[0] == '\0');
1663 		apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
1664 				  ETH_ALEN) == 0);
1665 		if (!ssidbroad) {
1666 			ssidmatch = (ieee->current_network.ssid_len ==
1667 				    net->hidden_ssid_len) &&
1668 				    (!strncmp(ieee->current_network.ssid,
1669 				    net->hidden_ssid, net->hidden_ssid_len));
1670 			if (net->hidden_ssid_len > 0) {
1671 				strncpy(net->ssid, net->hidden_ssid,
1672 					net->hidden_ssid_len);
1673 				net->ssid_len = net->hidden_ssid_len;
1674 				ssidbroad = 1;
1675 			}
1676 		} else
1677 			ssidmatch =
1678 			   (ieee->current_network.ssid_len == net->ssid_len) &&
1679 			   (!strncmp(ieee->current_network.ssid, net->ssid,
1680 			   net->ssid_len));
1681 
1682 		/* if the user set the AP check if match.
1683 		 * if the network does not broadcast essid we check the
1684 		 *	 user supplyed ANY essid
1685 		 * if the network does broadcast and the user does not set
1686 		 *	 essid it is OK
1687 		 * if the network does broadcast and the user did set essid
1688 		 * check if essid match
1689 		 * if the ap is not set, check that the user set the bssid
1690 		 * and the network does bradcast and that those two bssid match
1691 		 */
1692 		if ((apset && apmatch &&
1693 		   ((ssidset && ssidbroad && ssidmatch) ||
1694 		   (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
1695 		   (!apset && ssidset && ssidbroad && ssidmatch) ||
1696 		   (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
1697 			/* if the essid is hidden replace it with the
1698 			* essid provided by the user.
1699 			*/
1700 			if (!ssidbroad) {
1701 				strncpy(tmp_ssid, ieee->current_network.ssid,
1702 					IW_ESSID_MAX_SIZE);
1703 				tmp_ssid_len = ieee->current_network.ssid_len;
1704 			}
1705 			memcpy(&ieee->current_network, net,
1706 			       sizeof(struct rtllib_network));
1707 			if (!ssidbroad) {
1708 				strncpy(ieee->current_network.ssid, tmp_ssid,
1709 					IW_ESSID_MAX_SIZE);
1710 				ieee->current_network.ssid_len = tmp_ssid_len;
1711 			}
1712 			printk(KERN_INFO"Linking with %s,channel:%d, qos:%d, "
1713 			       "myHT:%d, networkHT:%d, mode:%x cur_net.flags"
1714 			       ":0x%x\n", ieee->current_network.ssid,
1715 			       ieee->current_network.channel,
1716 			       ieee->current_network.qos_data.supported,
1717 			       ieee->pHTInfo->bEnableHT,
1718 			       ieee->current_network.bssht.bdSupportHT,
1719 			       ieee->current_network.mode,
1720 			       ieee->current_network.flags);
1721 
1722 			if ((rtllib_act_scanning(ieee, false)) &&
1723 			   !(ieee->softmac_features & IEEE_SOFTMAC_SCAN))
1724 				rtllib_stop_scan_syncro(ieee);
1725 
1726 			ieee->hwscan_ch_bk = ieee->current_network.channel;
1727 			HTResetIOTSetting(ieee->pHTInfo);
1728 			ieee->wmm_acm = 0;
1729 			if (ieee->iw_mode == IW_MODE_INFRA) {
1730 				/* Join the network for the first time */
1731 				ieee->AsocRetryCount = 0;
1732 				if ((ieee->current_network.qos_data.supported == 1) &&
1733 				   ieee->current_network.bssht.bdSupportHT)
1734 					HTResetSelfAndSavePeerSetting(ieee,
1735 						 &(ieee->current_network));
1736 				else
1737 					ieee->pHTInfo->bCurrentHTSupport =
1738 								 false;
1739 
1740 				ieee->state = RTLLIB_ASSOCIATING;
1741 				if (ieee->LedControlHandler != NULL)
1742 					ieee->LedControlHandler(ieee->dev,
1743 							 LED_CTL_START_TO_LINK);
1744 				queue_delayed_work_rsl(ieee->wq,
1745 					   &ieee->associate_procedure_wq, 0);
1746 			} else {
1747 				if (rtllib_is_54g(&ieee->current_network) &&
1748 					(ieee->modulation & RTLLIB_OFDM_MODULATION)) {
1749 					ieee->rate = 108;
1750 					ieee->SetWirelessMode(ieee->dev, IEEE_G);
1751 					printk(KERN_INFO"Using G rates\n");
1752 				} else {
1753 					ieee->rate = 22;
1754 					ieee->SetWirelessMode(ieee->dev, IEEE_B);
1755 					printk(KERN_INFO"Using B rates\n");
1756 				}
1757 				memset(ieee->dot11HTOperationalRateSet, 0, 16);
1758 				ieee->state = RTLLIB_LINKED;
1759 			}
1760 		}
1761 	}
1762 }
1763 
rtllib_softmac_check_all_nets(struct rtllib_device * ieee)1764 void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
1765 {
1766 	unsigned long flags;
1767 	struct rtllib_network *target;
1768 
1769 	spin_lock_irqsave(&ieee->lock, flags);
1770 
1771 	list_for_each_entry(target, &ieee->network_list, list) {
1772 
1773 		/* if the state become different that NOLINK means
1774 		 * we had found what we are searching for
1775 		 */
1776 
1777 		if (ieee->state != RTLLIB_NOLINK)
1778 			break;
1779 
1780 		if (ieee->scan_age == 0 || time_after(target->last_scanned +
1781 		    ieee->scan_age, jiffies))
1782 			rtllib_softmac_new_net(ieee, target);
1783 	}
1784 	spin_unlock_irqrestore(&ieee->lock, flags);
1785 }
1786 
auth_parse(struct sk_buff * skb,u8 ** challenge,int * chlen)1787 static inline u16 auth_parse(struct sk_buff *skb, u8** challenge, int *chlen)
1788 {
1789 	struct rtllib_authentication *a;
1790 	u8 *t;
1791 	if (skb->len <  (sizeof(struct rtllib_authentication) -
1792 	    sizeof(struct rtllib_info_element))) {
1793 		RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1794 		return 0xcafe;
1795 	}
1796 	*challenge = NULL;
1797 	a = (struct rtllib_authentication *) skb->data;
1798 	if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
1799 		t = skb->data + sizeof(struct rtllib_authentication);
1800 
1801 		if (*(t++) == MFIE_TYPE_CHALLENGE) {
1802 			*chlen = *(t++);
1803 			*challenge = kmalloc(*chlen, GFP_ATOMIC);
1804 			memcpy(*challenge, t, *chlen);	/*TODO - check here*/
1805 		}
1806 	}
1807 	return cpu_to_le16(a->status);
1808 }
1809 
auth_rq_parse(struct sk_buff * skb,u8 * dest)1810 static int auth_rq_parse(struct sk_buff *skb, u8 *dest)
1811 {
1812 	struct rtllib_authentication *a;
1813 
1814 	if (skb->len <  (sizeof(struct rtllib_authentication) -
1815 	    sizeof(struct rtllib_info_element))) {
1816 		RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n",
1817 				  skb->len);
1818 		return -1;
1819 	}
1820 	a = (struct rtllib_authentication *) skb->data;
1821 
1822 	memcpy(dest, a->header.addr2, ETH_ALEN);
1823 
1824 	if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1825 		return  WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1826 
1827 	return WLAN_STATUS_SUCCESS;
1828 }
1829 
probe_rq_parse(struct rtllib_device * ieee,struct sk_buff * skb,u8 * src)1830 static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1831 			    u8 *src)
1832 {
1833 	u8 *tag;
1834 	u8 *skbend;
1835 	u8 *ssid = NULL;
1836 	u8 ssidlen = 0;
1837 	struct rtllib_hdr_3addr   *header =
1838 		(struct rtllib_hdr_3addr   *) skb->data;
1839 	bool bssid_match;
1840 
1841 	if (skb->len < sizeof(struct rtllib_hdr_3addr))
1842 		return -1; /* corrupted */
1843 
1844 	bssid_match =
1845 	  (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) &&
1846 	  (memcmp(header->addr3, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0);
1847 	if (bssid_match)
1848 		return -1;
1849 
1850 	memcpy(src, header->addr2, ETH_ALEN);
1851 
1852 	skbend = (u8 *)skb->data + skb->len;
1853 
1854 	tag = skb->data + sizeof(struct rtllib_hdr_3addr);
1855 
1856 	while (tag + 1 < skbend) {
1857 		if (*tag == 0) {
1858 			ssid = tag + 2;
1859 			ssidlen = *(tag + 1);
1860 			break;
1861 		}
1862 		tag++; /* point to the len field */
1863 		tag = tag + *(tag); /* point to the last data byte of the tag */
1864 		tag++; /* point to the next tag */
1865 	}
1866 
1867 	if (ssidlen == 0)
1868 		return 1;
1869 
1870 	if (!ssid)
1871 		return 1; /* ssid not found in tagged param */
1872 
1873 	return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
1874 }
1875 
assoc_rq_parse(struct sk_buff * skb,u8 * dest)1876 static int assoc_rq_parse(struct sk_buff *skb, u8 *dest)
1877 {
1878 	struct rtllib_assoc_request_frame *a;
1879 
1880 	if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
1881 		sizeof(struct rtllib_info_element))) {
1882 
1883 		RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len);
1884 		return -1;
1885 	}
1886 
1887 	a = (struct rtllib_assoc_request_frame *) skb->data;
1888 
1889 	memcpy(dest, a->header.addr2, ETH_ALEN);
1890 
1891 	return 0;
1892 }
1893 
assoc_parse(struct rtllib_device * ieee,struct sk_buff * skb,int * aid)1894 static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
1895 			      int *aid)
1896 {
1897 	struct rtllib_assoc_response_frame *response_head;
1898 	u16 status_code;
1899 
1900 	if (skb->len <  sizeof(struct rtllib_assoc_response_frame)) {
1901 		RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1902 		return 0xcafe;
1903 	}
1904 
1905 	response_head = (struct rtllib_assoc_response_frame *) skb->data;
1906 	*aid = le16_to_cpu(response_head->aid) & 0x3fff;
1907 
1908 	status_code = le16_to_cpu(response_head->status);
1909 	if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
1910 	   status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
1911 	   ((ieee->mode == IEEE_G) &&
1912 	   (ieee->current_network.mode == IEEE_N_24G) &&
1913 	   (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
1914 		ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
1915 	} else {
1916 		ieee->AsocRetryCount = 0;
1917 	}
1918 
1919 	return le16_to_cpu(response_head->status);
1920 }
1921 
rtllib_rx_probe_rq(struct rtllib_device * ieee,struct sk_buff * skb)1922 void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
1923 {
1924 	u8 dest[ETH_ALEN];
1925 	ieee->softmac_stats.rx_probe_rq++;
1926 	if (probe_rq_parse(ieee, skb, dest) > 0) {
1927 		ieee->softmac_stats.tx_probe_rs++;
1928 		rtllib_resp_to_probe(ieee, dest);
1929 	}
1930 }
1931 
rtllib_rx_auth_rq(struct rtllib_device * ieee,struct sk_buff * skb)1932 static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
1933 				     struct sk_buff *skb)
1934 {
1935 	u8 dest[ETH_ALEN];
1936 	int status;
1937 	ieee->softmac_stats.rx_auth_rq++;
1938 
1939 	status = auth_rq_parse(skb, dest);
1940 	if (status != -1)
1941 		rtllib_resp_to_auth(ieee, status, dest);
1942 }
1943 
rtllib_rx_assoc_rq(struct rtllib_device * ieee,struct sk_buff * skb)1944 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
1945 				      struct sk_buff *skb)
1946 {
1947 
1948 	u8 dest[ETH_ALEN];
1949 
1950 	ieee->softmac_stats.rx_ass_rq++;
1951 	if (assoc_rq_parse(skb, dest) != -1)
1952 		rtllib_resp_to_assoc_rq(ieee, dest);
1953 
1954 	printk(KERN_INFO"New client associated: %pM\n", dest);
1955 }
1956 
rtllib_sta_ps_send_null_frame(struct rtllib_device * ieee,short pwr)1957 void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
1958 {
1959 
1960 	struct sk_buff *buf = rtllib_null_func(ieee, pwr);
1961 
1962 	if (buf)
1963 		softmac_ps_mgmt_xmit(buf, ieee);
1964 }
1965 EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
1966 
rtllib_sta_ps_send_pspoll_frame(struct rtllib_device * ieee)1967 void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
1968 {
1969 	struct sk_buff *buf = rtllib_pspoll_func(ieee);
1970 
1971 	if (buf)
1972 		softmac_ps_mgmt_xmit(buf, ieee);
1973 }
1974 
rtllib_sta_ps_sleep(struct rtllib_device * ieee,u64 * time)1975 static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
1976 {
1977 	int timeout = ieee->ps_timeout;
1978 	u8 dtim;
1979 	struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
1980 					(&(ieee->PowerSaveControl));
1981 
1982 	if (ieee->LPSDelayCnt) {
1983 		ieee->LPSDelayCnt--;
1984 		return 0;
1985 	}
1986 
1987 	dtim = ieee->current_network.dtim_data;
1988 	if (!(dtim & RTLLIB_DTIM_VALID))
1989 		return 0;
1990 	timeout = ieee->current_network.beacon_interval;
1991 	ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
1992 	/* there's no need to nofity AP that I find you buffered
1993 	 * with broadcast packet */
1994 	if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
1995 		return 2;
1996 
1997 	if (!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout)))
1998 		return 0;
1999 	if (!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout)))
2000 		return 0;
2001 	if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
2002 	    (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
2003 		return 0;
2004 
2005 	if (time) {
2006 		if (ieee->bAwakePktSent == true) {
2007 			pPSC->LPSAwakeIntvl = 1;
2008 		} else {
2009 			u8		MaxPeriod = 1;
2010 
2011 			if (pPSC->LPSAwakeIntvl == 0)
2012 				pPSC->LPSAwakeIntvl = 1;
2013 			if (pPSC->RegMaxLPSAwakeIntvl == 0)
2014 				MaxPeriod = 1;
2015 			else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
2016 				MaxPeriod = ieee->current_network.dtim_period;
2017 			else
2018 				MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
2019 			pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
2020 					       MaxPeriod) ? MaxPeriod :
2021 					       (pPSC->LPSAwakeIntvl + 1);
2022 		}
2023 		{
2024 			u8 LPSAwakeIntvl_tmp = 0;
2025 			u8 period = ieee->current_network.dtim_period;
2026 			u8 count = ieee->current_network.tim.tim_count;
2027 			if (count == 0) {
2028 				if (pPSC->LPSAwakeIntvl > period)
2029 					LPSAwakeIntvl_tmp = period +
2030 						 (pPSC->LPSAwakeIntvl -
2031 						 period) -
2032 						 ((pPSC->LPSAwakeIntvl-period) %
2033 						 period);
2034 				else
2035 					LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2036 
2037 			} else {
2038 				if (pPSC->LPSAwakeIntvl >
2039 				    ieee->current_network.tim.tim_count)
2040 					LPSAwakeIntvl_tmp = count +
2041 					(pPSC->LPSAwakeIntvl - count) -
2042 					((pPSC->LPSAwakeIntvl-count)%period);
2043 				else
2044 					LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
2045 			}
2046 
2047 		*time = ieee->current_network.last_dtim_sta_time
2048 			+ MSECS(ieee->current_network.beacon_interval *
2049 			LPSAwakeIntvl_tmp);
2050 	}
2051 	}
2052 
2053 	return 1;
2054 
2055 
2056 }
2057 
rtllib_sta_ps(struct rtllib_device * ieee)2058 static inline void rtllib_sta_ps(struct rtllib_device *ieee)
2059 {
2060 	u64 time;
2061 	short sleep;
2062 	unsigned long flags, flags2;
2063 
2064 	spin_lock_irqsave(&ieee->lock, flags);
2065 
2066 	if ((ieee->ps == RTLLIB_PS_DISABLED ||
2067 	     ieee->iw_mode != IW_MODE_INFRA ||
2068 	     ieee->state != RTLLIB_LINKED)) {
2069 		RT_TRACE(COMP_DBG, "=====>%s(): no need to ps,wake up!! "
2070 			 "ieee->ps is %d, ieee->iw_mode is %d, ieee->state"
2071 			 " is %d\n", __func__, ieee->ps, ieee->iw_mode,
2072 			  ieee->state);
2073 		spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2074 		rtllib_sta_wakeup(ieee, 1);
2075 
2076 		spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2077 	}
2078 	sleep = rtllib_sta_ps_sleep(ieee, &time);
2079 	/* 2 wake, 1 sleep, 0 do nothing */
2080 	if (sleep == 0)
2081 		goto out;
2082 	if (sleep == 1) {
2083 		if (ieee->sta_sleep == LPS_IS_SLEEP) {
2084 			ieee->enter_sleep_state(ieee->dev, time);
2085 		} else if (ieee->sta_sleep == LPS_IS_WAKE) {
2086 			spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2087 
2088 			if (ieee->ps_is_queue_empty(ieee->dev)) {
2089 				ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
2090 				ieee->ack_tx_to_ieee = 1;
2091 				rtllib_sta_ps_send_null_frame(ieee, 1);
2092 				ieee->ps_time = time;
2093 			}
2094 			spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2095 
2096 		}
2097 
2098 		ieee->bAwakePktSent = false;
2099 
2100 	} else if (sleep == 2) {
2101 		spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2102 
2103 		rtllib_sta_wakeup(ieee, 1);
2104 
2105 		spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2106 	}
2107 
2108 out:
2109 	spin_unlock_irqrestore(&ieee->lock, flags);
2110 
2111 }
2112 
rtllib_sta_wakeup(struct rtllib_device * ieee,short nl)2113 void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
2114 {
2115 	if (ieee->sta_sleep == LPS_IS_WAKE) {
2116 		if (nl) {
2117 			if (ieee->pHTInfo->IOTAction &
2118 			    HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2119 				ieee->ack_tx_to_ieee = 1;
2120 				rtllib_sta_ps_send_null_frame(ieee, 0);
2121 			} else {
2122 				ieee->ack_tx_to_ieee = 1;
2123 				rtllib_sta_ps_send_pspoll_frame(ieee);
2124 			}
2125 		}
2126 		return;
2127 
2128 	}
2129 
2130 	if (ieee->sta_sleep == LPS_IS_SLEEP)
2131 		ieee->sta_wake_up(ieee->dev);
2132 	if (nl) {
2133 		if (ieee->pHTInfo->IOTAction &
2134 		    HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
2135 			ieee->ack_tx_to_ieee = 1;
2136 			rtllib_sta_ps_send_null_frame(ieee, 0);
2137 		} else {
2138 			ieee->ack_tx_to_ieee = 1;
2139 			ieee->polling = true;
2140 			rtllib_sta_ps_send_pspoll_frame(ieee);
2141 		}
2142 
2143 	} else {
2144 		ieee->sta_sleep = LPS_IS_WAKE;
2145 		ieee->polling = false;
2146 	}
2147 }
2148 
rtllib_ps_tx_ack(struct rtllib_device * ieee,short success)2149 void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
2150 {
2151 	unsigned long flags, flags2;
2152 
2153 	spin_lock_irqsave(&ieee->lock, flags);
2154 
2155 	if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
2156 		/* Null frame with PS bit set */
2157 		if (success) {
2158 			ieee->sta_sleep = LPS_IS_SLEEP;
2159 			ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
2160 		}
2161 		/* if the card report not success we can't be sure the AP
2162 		 * has not RXed so we can't assume the AP believe us awake
2163 		 */
2164 	} else {/* 21112005 - tx again null without PS bit if lost */
2165 
2166 		if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
2167 			spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
2168 			if (ieee->pHTInfo->IOTAction &
2169 			    HT_IOT_ACT_NULL_DATA_POWER_SAVING)
2170 				rtllib_sta_ps_send_null_frame(ieee, 0);
2171 			else
2172 				rtllib_sta_ps_send_pspoll_frame(ieee);
2173 			spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
2174 		}
2175 	}
2176 	spin_unlock_irqrestore(&ieee->lock, flags);
2177 }
2178 EXPORT_SYMBOL(rtllib_ps_tx_ack);
2179 
rtllib_process_action(struct rtllib_device * ieee,struct sk_buff * skb)2180 static void rtllib_process_action(struct rtllib_device *ieee, struct sk_buff *skb)
2181 {
2182 	struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2183 	u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
2184 	u8 category = 0;
2185 
2186 	if (act == NULL) {
2187 		RTLLIB_DEBUG(RTLLIB_DL_ERR, "error to get payload of "
2188 			     "action frame\n");
2189 		return;
2190 	}
2191 
2192 	category = *act;
2193 	act++;
2194 	switch (category) {
2195 	case ACT_CAT_BA:
2196 		switch (*act) {
2197 		case ACT_ADDBAREQ:
2198 			rtllib_rx_ADDBAReq(ieee, skb);
2199 			break;
2200 		case ACT_ADDBARSP:
2201 			rtllib_rx_ADDBARsp(ieee, skb);
2202 			break;
2203 		case ACT_DELBA:
2204 			rtllib_rx_DELBA(ieee, skb);
2205 			break;
2206 		}
2207 		break;
2208 	default:
2209 		break;
2210 	}
2211 	return;
2212 }
2213 
rtllib_rx_assoc_resp(struct rtllib_device * ieee,struct sk_buff * skb,struct rtllib_rx_stats * rx_stats)2214 inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
2215 				struct rtllib_rx_stats *rx_stats)
2216 {
2217 	u16 errcode;
2218 	int aid;
2219 	u8 *ies;
2220 	struct rtllib_assoc_response_frame *assoc_resp;
2221 	struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2222 
2223 	RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
2224 			  WLAN_FC_GET_STYPE(header->frame_ctl));
2225 
2226 	if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2227 	     ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
2228 	     (ieee->iw_mode == IW_MODE_INFRA)) {
2229 		errcode = assoc_parse(ieee, skb, &aid);
2230 		if (0 == errcode) {
2231 			struct rtllib_network *network =
2232 				 kzalloc(sizeof(struct rtllib_network),
2233 				 GFP_ATOMIC);
2234 
2235 			if (!network)
2236 				return 1;
2237 			ieee->state = RTLLIB_LINKED;
2238 			ieee->assoc_id = aid;
2239 			ieee->softmac_stats.rx_ass_ok++;
2240 			/* station support qos */
2241 			/* Let the register setting default with Legacy station */
2242 			assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
2243 			if (ieee->current_network.qos_data.supported == 1) {
2244 				if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
2245 							rx_stats->len - sizeof(*assoc_resp),
2246 							network, rx_stats)) {
2247 					kfree(network);
2248 					return 1;
2249 				} else {
2250 					memcpy(ieee->pHTInfo->PeerHTCapBuf,
2251 					       network->bssht.bdHTCapBuf,
2252 					       network->bssht.bdHTCapLen);
2253 					memcpy(ieee->pHTInfo->PeerHTInfoBuf,
2254 					       network->bssht.bdHTInfoBuf,
2255 					       network->bssht.bdHTInfoLen);
2256 				}
2257 				if (ieee->handle_assoc_response != NULL)
2258 					ieee->handle_assoc_response(ieee->dev,
2259 						 (struct rtllib_assoc_response_frame *)header,
2260 						 network);
2261 			}
2262 			kfree(network);
2263 
2264 			kfree(ieee->assocresp_ies);
2265 			ieee->assocresp_ies = NULL;
2266 			ies = &(assoc_resp->info_element[0].id);
2267 			ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
2268 			ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
2269 						      GFP_ATOMIC);
2270 			if (ieee->assocresp_ies)
2271 				memcpy(ieee->assocresp_ies, ies,
2272 				       ieee->assocresp_ies_len);
2273 			else {
2274 				printk(KERN_INFO "%s()Warning: can't alloc "
2275 				       "memory for assocresp_ies\n", __func__);
2276 				ieee->assocresp_ies_len = 0;
2277 			}
2278 			rtllib_associate_complete(ieee);
2279 		} else {
2280 			/* aid could not been allocated */
2281 			ieee->softmac_stats.rx_ass_err++;
2282 			printk(KERN_INFO "Association response status code 0x%x\n",
2283 				errcode);
2284 			RTLLIB_DEBUG_MGMT(
2285 				"Association response status code 0x%x\n",
2286 				errcode);
2287 			if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
2288 				queue_delayed_work_rsl(ieee->wq,
2289 					 &ieee->associate_procedure_wq, 0);
2290 			else
2291 				rtllib_associate_abort(ieee);
2292 		}
2293 	}
2294 	return 0;
2295 }
2296 
rtllib_rx_auth(struct rtllib_device * ieee,struct sk_buff * skb,struct rtllib_rx_stats * rx_stats)2297 inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
2298 			  struct rtllib_rx_stats *rx_stats)
2299 {
2300 	u16 errcode;
2301 	u8 *challenge;
2302 	int chlen = 0;
2303 	bool bSupportNmode = true, bHalfSupportNmode = false;
2304 
2305 	if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
2306 		if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
2307 		    (ieee->iw_mode == IW_MODE_INFRA)) {
2308 			RTLLIB_DEBUG_MGMT("Received authentication response");
2309 
2310 			errcode = auth_parse(skb, &challenge, &chlen);
2311 			if (0 == errcode) {
2312 				if (ieee->open_wep || !challenge) {
2313 					ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
2314 					ieee->softmac_stats.rx_auth_rs_ok++;
2315 					if (!(ieee->pHTInfo->IOTAction &
2316 					    HT_IOT_ACT_PURE_N_MODE)) {
2317 						if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
2318 							if (IsHTHalfNmodeAPs(ieee)) {
2319 								bSupportNmode = true;
2320 								bHalfSupportNmode = true;
2321 							} else {
2322 								bSupportNmode = false;
2323 								bHalfSupportNmode = false;
2324 							}
2325 						}
2326 					}
2327 					/* Dummy wirless mode setting to avoid
2328 					 * encryption issue */
2329 					if (bSupportNmode) {
2330 						ieee->SetWirelessMode(ieee->dev,
2331 						   ieee->current_network.mode);
2332 					} else {
2333 						/*TODO*/
2334 						ieee->SetWirelessMode(ieee->dev,
2335 								      IEEE_G);
2336 					}
2337 
2338 					if (ieee->current_network.mode ==
2339 					    IEEE_N_24G &&
2340 					    bHalfSupportNmode == true) {
2341 						printk(KERN_INFO "======>enter "
2342 						       "half N mode\n");
2343 						ieee->bHalfWirelessN24GMode =
2344 									 true;
2345 					} else
2346 						ieee->bHalfWirelessN24GMode =
2347 									 false;
2348 
2349 					rtllib_associate_step2(ieee);
2350 				} else {
2351 					rtllib_auth_challenge(ieee, challenge,
2352 							      chlen);
2353 				}
2354 			} else {
2355 				ieee->softmac_stats.rx_auth_rs_err++;
2356 				RTLLIB_DEBUG_MGMT("Authentication respose"
2357 						  " status code 0x%x", errcode);
2358 
2359 				printk(KERN_INFO "Authentication respose "
2360 				       "status code 0x%x", errcode);
2361 				rtllib_associate_abort(ieee);
2362 			}
2363 
2364 		} else if (ieee->iw_mode == IW_MODE_MASTER) {
2365 			rtllib_rx_auth_rq(ieee, skb);
2366 		}
2367 	}
2368 	return 0;
2369 }
2370 
rtllib_rx_deauth(struct rtllib_device * ieee,struct sk_buff * skb)2371 inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
2372 {
2373 	struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2374 
2375 	if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
2376 		return 0;
2377 
2378 	/* FIXME for now repeat all the association procedure
2379 	* both for disassociation and deauthentication
2380 	*/
2381 	if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2382 	    ieee->state == RTLLIB_LINKED &&
2383 	    (ieee->iw_mode == IW_MODE_INFRA)) {
2384 		printk(KERN_INFO "==========>received disassoc/deauth(%x) "
2385 		       "frame, reason code:%x\n",
2386 		       WLAN_FC_GET_STYPE(header->frame_ctl),
2387 		       ((struct rtllib_disassoc *)skb->data)->reason);
2388 		ieee->state = RTLLIB_ASSOCIATING;
2389 		ieee->softmac_stats.reassoc++;
2390 		ieee->is_roaming = true;
2391 		ieee->LinkDetectInfo.bBusyTraffic = false;
2392 		rtllib_disassociate(ieee);
2393 		RemovePeerTS(ieee, header->addr2);
2394 		if (ieee->LedControlHandler != NULL)
2395 			ieee->LedControlHandler(ieee->dev,
2396 						LED_CTL_START_TO_LINK);
2397 
2398 		if (!(ieee->rtllib_ap_sec_type(ieee) &
2399 		    (SEC_ALG_CCMP|SEC_ALG_TKIP)))
2400 			queue_delayed_work_rsl(ieee->wq,
2401 				       &ieee->associate_procedure_wq, 5);
2402 	}
2403 	return 0;
2404 }
2405 
rtllib_rx_frame_softmac(struct rtllib_device * ieee,struct sk_buff * skb,struct rtllib_rx_stats * rx_stats,u16 type,u16 stype)2406 inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
2407 				   struct sk_buff *skb,
2408 				   struct rtllib_rx_stats *rx_stats, u16 type,
2409 				   u16 stype)
2410 {
2411 	struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
2412 
2413 	if (!ieee->proto_started)
2414 		return 0;
2415 
2416 	switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2417 	case RTLLIB_STYPE_ASSOC_RESP:
2418 	case RTLLIB_STYPE_REASSOC_RESP:
2419 		if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
2420 			return 1;
2421 		break;
2422 	case RTLLIB_STYPE_ASSOC_REQ:
2423 	case RTLLIB_STYPE_REASSOC_REQ:
2424 		if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
2425 		     ieee->iw_mode == IW_MODE_MASTER)
2426 			rtllib_rx_assoc_rq(ieee, skb);
2427 		break;
2428 	case RTLLIB_STYPE_AUTH:
2429 		rtllib_rx_auth(ieee, skb, rx_stats);
2430 		break;
2431 	case RTLLIB_STYPE_DISASSOC:
2432 	case RTLLIB_STYPE_DEAUTH:
2433 		rtllib_rx_deauth(ieee, skb);
2434 		break;
2435 	case RTLLIB_STYPE_MANAGE_ACT:
2436 		rtllib_process_action(ieee, skb);
2437 		break;
2438 	default:
2439 		return -1;
2440 		break;
2441 	}
2442 	return 0;
2443 }
2444 
2445 /* following are for a simplier TX queue management.
2446  * Instead of using netif_[stop/wake]_queue the driver
2447  * will uses these two function (plus a reset one), that
2448  * will internally uses the kernel netif_* and takes
2449  * care of the ieee802.11 fragmentation.
2450  * So the driver receives a fragment per time and might
2451  * call the stop function when it want without take care
2452  * to have enought room to TX an entire packet.
2453  * This might be useful if each fragment need it's own
2454  * descriptor, thus just keep a total free memory > than
2455  * the max fragmentation treshold is not enought.. If the
2456  * ieee802.11 stack passed a TXB struct then you needed
2457  * to keep N free descriptors where
2458  * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
2459  * In this way you need just one and the 802.11 stack
2460  * will take care of buffering fragments and pass them to
2461  * to the driver later, when it wakes the queue.
2462  */
rtllib_softmac_xmit(struct rtllib_txb * txb,struct rtllib_device * ieee)2463 void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
2464 {
2465 
2466 	unsigned int queue_index = txb->queue_index;
2467 	unsigned long flags;
2468 	int  i;
2469 	struct cb_desc *tcb_desc = NULL;
2470 	unsigned long queue_len = 0;
2471 
2472 	spin_lock_irqsave(&ieee->lock, flags);
2473 
2474 	/* called with 2nd parm 0, no tx mgmt lock required */
2475 	rtllib_sta_wakeup(ieee, 0);
2476 
2477 	/* update the tx status */
2478 	tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
2479 		   MAX_DEV_ADDR_SIZE);
2480 	if (tcb_desc->bMulticast)
2481 		ieee->stats.multicast++;
2482 
2483 	/* if xmit available, just xmit it immediately, else just insert it to
2484 	 * the wait queue */
2485 	for (i = 0; i < txb->nr_frags; i++) {
2486 		queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
2487 		if ((queue_len  != 0) ||\
2488 		    (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
2489 		    (ieee->queue_stop)) {
2490 			/* insert the skb packet to the wait queue */
2491 			/* as for the completion function, it does not need
2492 			 * to check it any more.
2493 			 * */
2494 			if (queue_len < 200)
2495 				skb_queue_tail(&ieee->skb_waitQ[queue_index],
2496 					       txb->fragments[i]);
2497 			else
2498 				kfree_skb(txb->fragments[i]);
2499 		} else {
2500 			ieee->softmac_data_hard_start_xmit(
2501 					txb->fragments[i],
2502 					ieee->dev, ieee->rate);
2503 		}
2504 	}
2505 
2506 	rtllib_txb_free(txb);
2507 
2508 	spin_unlock_irqrestore(&ieee->lock, flags);
2509 
2510 }
2511 
2512 /* called with ieee->lock acquired */
rtllib_resume_tx(struct rtllib_device * ieee)2513 static void rtllib_resume_tx(struct rtllib_device *ieee)
2514 {
2515 	int i;
2516 	for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags;
2517 	     i++) {
2518 
2519 		if (ieee->queue_stop) {
2520 			ieee->tx_pending.frag = i;
2521 			return;
2522 		} else {
2523 
2524 			ieee->softmac_data_hard_start_xmit(
2525 				ieee->tx_pending.txb->fragments[i],
2526 				ieee->dev, ieee->rate);
2527 			ieee->stats.tx_packets++;
2528 		}
2529 	}
2530 
2531 	rtllib_txb_free(ieee->tx_pending.txb);
2532 	ieee->tx_pending.txb = NULL;
2533 }
2534 
2535 
rtllib_reset_queue(struct rtllib_device * ieee)2536 void rtllib_reset_queue(struct rtllib_device *ieee)
2537 {
2538 	unsigned long flags;
2539 
2540 	spin_lock_irqsave(&ieee->lock, flags);
2541 	init_mgmt_queue(ieee);
2542 	if (ieee->tx_pending.txb) {
2543 		rtllib_txb_free(ieee->tx_pending.txb);
2544 		ieee->tx_pending.txb = NULL;
2545 	}
2546 	ieee->queue_stop = 0;
2547 	spin_unlock_irqrestore(&ieee->lock, flags);
2548 
2549 }
2550 EXPORT_SYMBOL(rtllib_reset_queue);
2551 
rtllib_wake_queue(struct rtllib_device * ieee)2552 void rtllib_wake_queue(struct rtllib_device *ieee)
2553 {
2554 
2555 	unsigned long flags;
2556 	struct sk_buff *skb;
2557 	struct rtllib_hdr_3addr  *header;
2558 
2559 	spin_lock_irqsave(&ieee->lock, flags);
2560 	if (!ieee->queue_stop)
2561 		goto exit;
2562 
2563 	ieee->queue_stop = 0;
2564 
2565 	if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) {
2566 		while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) {
2567 
2568 			header = (struct rtllib_hdr_3addr  *) skb->data;
2569 
2570 			header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2571 
2572 			if (ieee->seq_ctrl[0] == 0xFFF)
2573 				ieee->seq_ctrl[0] = 0;
2574 			else
2575 				ieee->seq_ctrl[0]++;
2576 
2577 			ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
2578 							   ieee->basic_rate);
2579 		}
2580 	}
2581 	if (!ieee->queue_stop && ieee->tx_pending.txb)
2582 		rtllib_resume_tx(ieee);
2583 
2584 	if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) {
2585 		ieee->softmac_stats.swtxawake++;
2586 		netif_wake_queue(ieee->dev);
2587 	}
2588 
2589 exit:
2590 	spin_unlock_irqrestore(&ieee->lock, flags);
2591 }
2592 
2593 
rtllib_stop_queue(struct rtllib_device * ieee)2594 void rtllib_stop_queue(struct rtllib_device *ieee)
2595 {
2596 
2597 	if (!netif_queue_stopped(ieee->dev)) {
2598 		netif_stop_queue(ieee->dev);
2599 		ieee->softmac_stats.swtxstop++;
2600 	}
2601 	ieee->queue_stop = 1;
2602 
2603 }
2604 
rtllib_stop_all_queues(struct rtllib_device * ieee)2605 void rtllib_stop_all_queues(struct rtllib_device *ieee)
2606 {
2607 	unsigned int i;
2608 	for (i = 0; i < ieee->dev->num_tx_queues; i++)
2609 		netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
2610 
2611 	netif_tx_stop_all_queues(ieee->dev);
2612 }
2613 
rtllib_wake_all_queues(struct rtllib_device * ieee)2614 void rtllib_wake_all_queues(struct rtllib_device *ieee)
2615 {
2616 	netif_tx_wake_all_queues(ieee->dev);
2617 }
2618 
rtllib_randomize_cell(struct rtllib_device * ieee)2619 inline void rtllib_randomize_cell(struct rtllib_device *ieee)
2620 {
2621 
2622 	get_random_bytes(ieee->current_network.bssid, ETH_ALEN);
2623 
2624 	/* an IBSS cell address must have the two less significant
2625 	 * bits of the first byte = 2
2626 	 */
2627 	ieee->current_network.bssid[0] &= ~0x01;
2628 	ieee->current_network.bssid[0] |= 0x02;
2629 }
2630 
2631 /* called in user context only */
rtllib_start_master_bss(struct rtllib_device * ieee)2632 void rtllib_start_master_bss(struct rtllib_device *ieee)
2633 {
2634 	ieee->assoc_id = 1;
2635 
2636 	if (ieee->current_network.ssid_len == 0) {
2637 		strncpy(ieee->current_network.ssid,
2638 			RTLLIB_DEFAULT_TX_ESSID,
2639 			IW_ESSID_MAX_SIZE);
2640 
2641 		ieee->current_network.ssid_len =
2642 				 strlen(RTLLIB_DEFAULT_TX_ESSID);
2643 		ieee->ssid_set = 1;
2644 	}
2645 
2646 	memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN);
2647 
2648 	ieee->set_chan(ieee->dev, ieee->current_network.channel);
2649 	ieee->state = RTLLIB_LINKED;
2650 	ieee->link_change(ieee->dev);
2651 	notify_wx_assoc_event(ieee);
2652 
2653 	if (ieee->data_hard_resume)
2654 		ieee->data_hard_resume(ieee->dev);
2655 
2656 	netif_carrier_on(ieee->dev);
2657 }
2658 
rtllib_start_monitor_mode(struct rtllib_device * ieee)2659 static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
2660 {
2661 	/* reset hardware status */
2662 	if (ieee->raw_tx) {
2663 		if (ieee->data_hard_resume)
2664 			ieee->data_hard_resume(ieee->dev);
2665 
2666 		netif_carrier_on(ieee->dev);
2667 	}
2668 }
2669 
rtllib_start_ibss_wq(void * data)2670 static void rtllib_start_ibss_wq(void *data)
2671 {
2672 	struct rtllib_device *ieee = container_of_dwork_rsl(data,
2673 				     struct rtllib_device, start_ibss_wq);
2674 	/* iwconfig mode ad-hoc will schedule this and return
2675 	 * on the other hand this will block further iwconfig SET
2676 	 * operations because of the wx_sem hold.
2677 	 * Anyway some most set operations set a flag to speed-up
2678 	 * (abort) this wq (when syncro scanning) before sleeping
2679 	 * on the semaphore
2680 	 */
2681 	if (!ieee->proto_started) {
2682 		printk(KERN_INFO "==========oh driver down return\n");
2683 		return;
2684 	}
2685 	down(&ieee->wx_sem);
2686 
2687 	if (ieee->current_network.ssid_len == 0) {
2688 		strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
2689 		ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
2690 		ieee->ssid_set = 1;
2691 	}
2692 
2693 	ieee->state = RTLLIB_NOLINK;
2694 	ieee->mode = IEEE_G;
2695 	/* check if we have this cell in our network list */
2696 	rtllib_softmac_check_all_nets(ieee);
2697 
2698 
2699 	/* if not then the state is not linked. Maybe the user swithced to
2700 	 * ad-hoc mode just after being in monitor mode, or just after
2701 	 * being very few time in managed mode (so the card have had no
2702 	 * time to scan all the chans..) or we have just run up the iface
2703 	 * after setting ad-hoc mode. So we have to give another try..
2704 	 * Here, in ibss mode, should be safe to do this without extra care
2705 	 * (in bss mode we had to make sure no-one tryed to associate when
2706 	 * we had just checked the ieee->state and we was going to start the
2707 	 * scan) beacause in ibss mode the rtllib_new_net function, when
2708 	 * finds a good net, just set the ieee->state to RTLLIB_LINKED,
2709 	 * so, at worst, we waste a bit of time to initiate an unneeded syncro
2710 	 * scan, that will stop at the first round because it sees the state
2711 	 * associated.
2712 	 */
2713 	if (ieee->state == RTLLIB_NOLINK)
2714 		rtllib_start_scan_syncro(ieee, 0);
2715 
2716 	/* the network definitively is not here.. create a new cell */
2717 	if (ieee->state == RTLLIB_NOLINK) {
2718 		printk(KERN_INFO "creating new IBSS cell\n");
2719 		ieee->current_network.channel = ieee->IbssStartChnl;
2720 		if (!ieee->wap_set)
2721 			rtllib_randomize_cell(ieee);
2722 
2723 		if (ieee->modulation & RTLLIB_CCK_MODULATION) {
2724 
2725 			ieee->current_network.rates_len = 4;
2726 
2727 			ieee->current_network.rates[0] =
2728 				 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
2729 			ieee->current_network.rates[1] =
2730 				 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
2731 			ieee->current_network.rates[2] =
2732 				 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
2733 			ieee->current_network.rates[3] =
2734 				 RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
2735 
2736 		} else
2737 			ieee->current_network.rates_len = 0;
2738 
2739 		if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
2740 			ieee->current_network.rates_ex_len = 8;
2741 
2742 			ieee->current_network.rates_ex[0] =
2743 						 RTLLIB_OFDM_RATE_6MB;
2744 			ieee->current_network.rates_ex[1] =
2745 						 RTLLIB_OFDM_RATE_9MB;
2746 			ieee->current_network.rates_ex[2] =
2747 						 RTLLIB_OFDM_RATE_12MB;
2748 			ieee->current_network.rates_ex[3] =
2749 						 RTLLIB_OFDM_RATE_18MB;
2750 			ieee->current_network.rates_ex[4] =
2751 						 RTLLIB_OFDM_RATE_24MB;
2752 			ieee->current_network.rates_ex[5] =
2753 						 RTLLIB_OFDM_RATE_36MB;
2754 			ieee->current_network.rates_ex[6] =
2755 						 RTLLIB_OFDM_RATE_48MB;
2756 			ieee->current_network.rates_ex[7] =
2757 						 RTLLIB_OFDM_RATE_54MB;
2758 
2759 			ieee->rate = 108;
2760 		} else {
2761 			ieee->current_network.rates_ex_len = 0;
2762 			ieee->rate = 22;
2763 		}
2764 
2765 		ieee->current_network.qos_data.supported = 0;
2766 		ieee->SetWirelessMode(ieee->dev, IEEE_G);
2767 		ieee->current_network.mode = ieee->mode;
2768 		ieee->current_network.atim_window = 0;
2769 		ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
2770 	}
2771 
2772 	printk(KERN_INFO "%s(): ieee->mode = %d\n", __func__, ieee->mode);
2773 	if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
2774 		HTUseDefaultSetting(ieee);
2775 	else
2776 		ieee->pHTInfo->bCurrentHTSupport = false;
2777 
2778 	ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
2779 			      (u8 *)(&ieee->state));
2780 
2781 	ieee->state = RTLLIB_LINKED;
2782 	ieee->link_change(ieee->dev);
2783 
2784 	HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
2785 	if (ieee->LedControlHandler != NULL)
2786 		ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
2787 
2788 	rtllib_start_send_beacons(ieee);
2789 
2790 	notify_wx_assoc_event(ieee);
2791 
2792 	if (ieee->data_hard_resume)
2793 		ieee->data_hard_resume(ieee->dev);
2794 
2795 	netif_carrier_on(ieee->dev);
2796 
2797 	up(&ieee->wx_sem);
2798 }
2799 
rtllib_start_ibss(struct rtllib_device * ieee)2800 inline void rtllib_start_ibss(struct rtllib_device *ieee)
2801 {
2802 	queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, MSECS(150));
2803 }
2804 
2805 /* this is called only in user context, with wx_sem held */
rtllib_start_bss(struct rtllib_device * ieee)2806 void rtllib_start_bss(struct rtllib_device *ieee)
2807 {
2808 	unsigned long flags;
2809 	if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
2810 		if (!ieee->bGlobalDomain)
2811 			return;
2812 	}
2813 	/* check if we have already found the net we
2814 	 * are interested in (if any).
2815 	 * if not (we are disassociated and we are not
2816 	 * in associating / authenticating phase) start the background scanning.
2817 	 */
2818 	rtllib_softmac_check_all_nets(ieee);
2819 
2820 	/* ensure no-one start an associating process (thus setting
2821 	 * the ieee->state to rtllib_ASSOCIATING) while we
2822 	 * have just cheked it and we are going to enable scan.
2823 	 * The rtllib_new_net function is always called with
2824 	 * lock held (from both rtllib_softmac_check_all_nets and
2825 	 * the rx path), so we cannot be in the middle of such function
2826 	 */
2827 	spin_lock_irqsave(&ieee->lock, flags);
2828 
2829 	if (ieee->state == RTLLIB_NOLINK)
2830 		rtllib_start_scan(ieee);
2831 	spin_unlock_irqrestore(&ieee->lock, flags);
2832 }
2833 
rtllib_link_change_wq(void * data)2834 static void rtllib_link_change_wq(void *data)
2835 {
2836 	struct rtllib_device *ieee = container_of_dwork_rsl(data,
2837 				     struct rtllib_device, link_change_wq);
2838 	ieee->link_change(ieee->dev);
2839 }
2840 /* called only in userspace context */
rtllib_disassociate(struct rtllib_device * ieee)2841 void rtllib_disassociate(struct rtllib_device *ieee)
2842 {
2843 	netif_carrier_off(ieee->dev);
2844 	if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
2845 			rtllib_reset_queue(ieee);
2846 
2847 	if (ieee->data_hard_stop)
2848 			ieee->data_hard_stop(ieee->dev);
2849 	if (IS_DOT11D_ENABLE(ieee))
2850 		Dot11d_Reset(ieee);
2851 	ieee->state = RTLLIB_NOLINK;
2852 	ieee->is_set_key = false;
2853 	ieee->wap_set = 0;
2854 
2855 	queue_delayed_work_rsl(ieee->wq, &ieee->link_change_wq, 0);
2856 
2857 	notify_wx_assoc_event(ieee);
2858 }
2859 
rtllib_associate_retry_wq(void * data)2860 static void rtllib_associate_retry_wq(void *data)
2861 {
2862 	struct rtllib_device *ieee = container_of_dwork_rsl(data,
2863 				     struct rtllib_device, associate_retry_wq);
2864 	unsigned long flags;
2865 
2866 	down(&ieee->wx_sem);
2867 	if (!ieee->proto_started)
2868 		goto exit;
2869 
2870 	if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
2871 		goto exit;
2872 
2873 	/* until we do not set the state to RTLLIB_NOLINK
2874 	* there are no possibility to have someone else trying
2875 	* to start an association procdure (we get here with
2876 	* ieee->state = RTLLIB_ASSOCIATING).
2877 	* When we set the state to RTLLIB_NOLINK it is possible
2878 	* that the RX path run an attempt to associate, but
2879 	* both rtllib_softmac_check_all_nets and the
2880 	* RX path works with ieee->lock held so there are no
2881 	* problems. If we are still disassociated then start a scan.
2882 	* the lock here is necessary to ensure no one try to start
2883 	* an association procedure when we have just checked the
2884 	* state and we are going to start the scan.
2885 	*/
2886 	ieee->beinretry = true;
2887 	ieee->state = RTLLIB_NOLINK;
2888 
2889 	rtllib_softmac_check_all_nets(ieee);
2890 
2891 	spin_lock_irqsave(&ieee->lock, flags);
2892 
2893 	if (ieee->state == RTLLIB_NOLINK)
2894 		rtllib_start_scan(ieee);
2895 	spin_unlock_irqrestore(&ieee->lock, flags);
2896 
2897 	ieee->beinretry = false;
2898 exit:
2899 	up(&ieee->wx_sem);
2900 }
2901 
rtllib_get_beacon_(struct rtllib_device * ieee)2902 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
2903 {
2904 	u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
2905 
2906 	struct sk_buff *skb;
2907 	struct rtllib_probe_response *b;
2908 	skb = rtllib_probe_resp(ieee, broadcast_addr);
2909 
2910 	if (!skb)
2911 		return NULL;
2912 
2913 	b = (struct rtllib_probe_response *) skb->data;
2914 	b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
2915 
2916 	return skb;
2917 
2918 }
2919 
rtllib_get_beacon(struct rtllib_device * ieee)2920 struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
2921 {
2922 	struct sk_buff *skb;
2923 	struct rtllib_probe_response *b;
2924 
2925 	skb = rtllib_get_beacon_(ieee);
2926 	if (!skb)
2927 		return NULL;
2928 
2929 	b = (struct rtllib_probe_response *) skb->data;
2930 	b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
2931 
2932 	if (ieee->seq_ctrl[0] == 0xFFF)
2933 		ieee->seq_ctrl[0] = 0;
2934 	else
2935 		ieee->seq_ctrl[0]++;
2936 
2937 	return skb;
2938 }
2939 EXPORT_SYMBOL(rtllib_get_beacon);
2940 
rtllib_softmac_stop_protocol(struct rtllib_device * ieee,u8 mesh_flag,u8 shutdown)2941 void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
2942 				  u8 shutdown)
2943 {
2944 	rtllib_stop_scan_syncro(ieee);
2945 	down(&ieee->wx_sem);
2946 	rtllib_stop_protocol(ieee, shutdown);
2947 	up(&ieee->wx_sem);
2948 }
2949 EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
2950 
2951 
rtllib_stop_protocol(struct rtllib_device * ieee,u8 shutdown)2952 void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
2953 {
2954 	if (!ieee->proto_started)
2955 		return;
2956 
2957 	if (shutdown) {
2958 		ieee->proto_started = 0;
2959 		ieee->proto_stoppping = 1;
2960 		if (ieee->rtllib_ips_leave != NULL)
2961 			ieee->rtllib_ips_leave(ieee->dev);
2962 	}
2963 
2964 	rtllib_stop_send_beacons(ieee);
2965 	del_timer_sync(&ieee->associate_timer);
2966 	cancel_delayed_work(&ieee->associate_retry_wq);
2967 	cancel_delayed_work(&ieee->start_ibss_wq);
2968 	cancel_delayed_work(&ieee->link_change_wq);
2969 	rtllib_stop_scan(ieee);
2970 
2971 	if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
2972 		ieee->state = RTLLIB_NOLINK;
2973 
2974 	if (ieee->state == RTLLIB_LINKED) {
2975 		if (ieee->iw_mode == IW_MODE_INFRA)
2976 			SendDisassociation(ieee, 1, deauth_lv_ss);
2977 		rtllib_disassociate(ieee);
2978 	}
2979 
2980 	if (shutdown) {
2981 		RemoveAllTS(ieee);
2982 		ieee->proto_stoppping = 0;
2983 	}
2984 	kfree(ieee->assocreq_ies);
2985 	ieee->assocreq_ies = NULL;
2986 	ieee->assocreq_ies_len = 0;
2987 	kfree(ieee->assocresp_ies);
2988 	ieee->assocresp_ies = NULL;
2989 	ieee->assocresp_ies_len = 0;
2990 }
2991 
rtllib_softmac_start_protocol(struct rtllib_device * ieee,u8 mesh_flag)2992 void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
2993 {
2994 	down(&ieee->wx_sem);
2995 	rtllib_start_protocol(ieee);
2996 	up(&ieee->wx_sem);
2997 }
2998 EXPORT_SYMBOL(rtllib_softmac_start_protocol);
2999 
rtllib_start_protocol(struct rtllib_device * ieee)3000 void rtllib_start_protocol(struct rtllib_device *ieee)
3001 {
3002 	short ch = 0;
3003 	int i = 0;
3004 
3005 	rtllib_update_active_chan_map(ieee);
3006 
3007 	if (ieee->proto_started)
3008 		return;
3009 
3010 	ieee->proto_started = 1;
3011 
3012 	if (ieee->current_network.channel == 0) {
3013 		do {
3014 			ch++;
3015 			if (ch > MAX_CHANNEL_NUMBER)
3016 				return; /* no channel found */
3017 		} while (!ieee->active_channel_map[ch]);
3018 		ieee->current_network.channel = ch;
3019 	}
3020 
3021 	if (ieee->current_network.beacon_interval == 0)
3022 		ieee->current_network.beacon_interval = 100;
3023 
3024 	for (i = 0; i < 17; i++) {
3025 		ieee->last_rxseq_num[i] = -1;
3026 		ieee->last_rxfrag_num[i] = -1;
3027 		ieee->last_packet_time[i] = 0;
3028 	}
3029 
3030 	if (ieee->UpdateBeaconInterruptHandler)
3031 		ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
3032 
3033 	ieee->wmm_acm = 0;
3034 	/* if the user set the MAC of the ad-hoc cell and then
3035 	 * switch to managed mode, shall we  make sure that association
3036 	 * attempts does not fail just because the user provide the essid
3037 	 * and the nic is still checking for the AP MAC ??
3038 	 */
3039 	if (ieee->iw_mode == IW_MODE_INFRA) {
3040 		rtllib_start_bss(ieee);
3041 	} else if (ieee->iw_mode == IW_MODE_ADHOC) {
3042 		if (ieee->UpdateBeaconInterruptHandler)
3043 			ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
3044 
3045 		rtllib_start_ibss(ieee);
3046 
3047 	} else if (ieee->iw_mode == IW_MODE_MASTER) {
3048 		rtllib_start_master_bss(ieee);
3049 	} else if (ieee->iw_mode == IW_MODE_MONITOR) {
3050 		rtllib_start_monitor_mode(ieee);
3051 	}
3052 }
3053 
rtllib_softmac_init(struct rtllib_device * ieee)3054 void rtllib_softmac_init(struct rtllib_device *ieee)
3055 {
3056 	int i;
3057 	memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
3058 
3059 	ieee->state = RTLLIB_NOLINK;
3060 	for (i = 0; i < 5; i++)
3061 		ieee->seq_ctrl[i] = 0;
3062 	ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
3063 	if (!ieee->pDot11dInfo)
3064 		RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for DOT11D\n");
3065 	ieee->LinkDetectInfo.SlotIndex = 0;
3066 	ieee->LinkDetectInfo.SlotNum = 2;
3067 	ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
3068 	ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
3069 	ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
3070 	ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
3071 	ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
3072 	ieee->bIsAggregateFrame = false;
3073 	ieee->assoc_id = 0;
3074 	ieee->queue_stop = 0;
3075 	ieee->scanning_continue = 0;
3076 	ieee->softmac_features = 0;
3077 	ieee->wap_set = 0;
3078 	ieee->ssid_set = 0;
3079 	ieee->proto_started = 0;
3080 	ieee->proto_stoppping = 0;
3081 	ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
3082 	ieee->rate = 22;
3083 	ieee->ps = RTLLIB_PS_DISABLED;
3084 	ieee->sta_sleep = LPS_IS_WAKE;
3085 
3086 	ieee->Regdot11HTOperationalRateSet[0] = 0xff;
3087 	ieee->Regdot11HTOperationalRateSet[1] = 0xff;
3088 	ieee->Regdot11HTOperationalRateSet[4] = 0x01;
3089 
3090 	ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
3091 	ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
3092 	ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
3093 
3094 	ieee->FirstIe_InScan = false;
3095 	ieee->actscanning = false;
3096 	ieee->beinretry = false;
3097 	ieee->is_set_key = false;
3098 	init_mgmt_queue(ieee);
3099 
3100 	ieee->sta_edca_param[0] = 0x0000A403;
3101 	ieee->sta_edca_param[1] = 0x0000A427;
3102 	ieee->sta_edca_param[2] = 0x005E4342;
3103 	ieee->sta_edca_param[3] = 0x002F3262;
3104 	ieee->aggregation = true;
3105 	ieee->enable_rx_imm_BA = 1;
3106 	ieee->tx_pending.txb = NULL;
3107 
3108 	_setup_timer(&ieee->associate_timer,
3109 		    rtllib_associate_abort_cb,
3110 		    (unsigned long) ieee);
3111 
3112 	_setup_timer(&ieee->beacon_timer,
3113 		    rtllib_send_beacon_cb,
3114 		    (unsigned long) ieee);
3115 
3116 
3117 	ieee->wq = create_workqueue(DRV_NAME);
3118 
3119 	INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
3120 			      (void *)rtllib_link_change_wq, ieee);
3121 	INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
3122 			      (void *)rtllib_start_ibss_wq, ieee);
3123 	INIT_WORK_RSL(&ieee->associate_complete_wq,
3124 		      (void *)rtllib_associate_complete_wq, ieee);
3125 	INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
3126 			      (void *)rtllib_associate_procedure_wq, ieee);
3127 	INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
3128 			      (void *)rtllib_softmac_scan_wq, ieee);
3129 	INIT_DELAYED_WORK_RSL(&ieee->softmac_hint11d_wq,
3130 			      (void *)rtllib_softmac_hint11d_wq, ieee);
3131 	INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
3132 			      (void *)rtllib_associate_retry_wq, ieee);
3133 	INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
3134 		      ieee);
3135 
3136 	sema_init(&ieee->wx_sem, 1);
3137 	sema_init(&ieee->scan_sem, 1);
3138 	sema_init(&ieee->ips_sem, 1);
3139 
3140 	spin_lock_init(&ieee->mgmt_tx_lock);
3141 	spin_lock_init(&ieee->beacon_lock);
3142 
3143 	tasklet_init(&ieee->ps_task,
3144 	     (void(*)(unsigned long)) rtllib_sta_ps,
3145 	     (unsigned long)ieee);
3146 
3147 }
3148 
rtllib_softmac_free(struct rtllib_device * ieee)3149 void rtllib_softmac_free(struct rtllib_device *ieee)
3150 {
3151 	down(&ieee->wx_sem);
3152 	kfree(ieee->pDot11dInfo);
3153 	ieee->pDot11dInfo = NULL;
3154 	del_timer_sync(&ieee->associate_timer);
3155 
3156 	cancel_delayed_work(&ieee->associate_retry_wq);
3157 	destroy_workqueue(ieee->wq);
3158 	up(&ieee->wx_sem);
3159 }
3160 
3161 /********************************************************
3162  * Start of WPA code.				        *
3163  * this is stolen from the ipw2200 driver	        *
3164  ********************************************************/
3165 
3166 
rtllib_wpa_enable(struct rtllib_device * ieee,int value)3167 static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
3168 {
3169 	/* This is called when wpa_supplicant loads and closes the driver
3170 	 * interface. */
3171 	printk(KERN_INFO "%s WPA\n", value ? "enabling" : "disabling");
3172 	ieee->wpa_enabled = value;
3173 	memset(ieee->ap_mac_addr, 0, 6);
3174 	return 0;
3175 }
3176 
3177 
rtllib_wpa_assoc_frame(struct rtllib_device * ieee,char * wpa_ie,int wpa_ie_len)3178 static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
3179 				   int wpa_ie_len)
3180 {
3181 	/* make sure WPA is enabled */
3182 	rtllib_wpa_enable(ieee, 1);
3183 
3184 	rtllib_disassociate(ieee);
3185 }
3186 
3187 
rtllib_wpa_mlme(struct rtllib_device * ieee,int command,int reason)3188 static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
3189 {
3190 
3191 	int ret = 0;
3192 
3193 	switch (command) {
3194 	case IEEE_MLME_STA_DEAUTH:
3195 		break;
3196 
3197 	case IEEE_MLME_STA_DISASSOC:
3198 		rtllib_disassociate(ieee);
3199 		break;
3200 
3201 	default:
3202 		printk(KERN_INFO "Unknown MLME request: %d\n", command);
3203 		ret = -EOPNOTSUPP;
3204 	}
3205 
3206 	return ret;
3207 }
3208 
3209 
rtllib_wpa_set_wpa_ie(struct rtllib_device * ieee,struct ieee_param * param,int plen)3210 static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
3211 			      struct ieee_param *param, int plen)
3212 {
3213 	u8 *buf;
3214 
3215 	if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
3216 	    (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
3217 		return -EINVAL;
3218 
3219 	if (param->u.wpa_ie.len) {
3220 		buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
3221 			      GFP_KERNEL);
3222 		if (buf == NULL)
3223 			return -ENOMEM;
3224 
3225 		kfree(ieee->wpa_ie);
3226 		ieee->wpa_ie = buf;
3227 		ieee->wpa_ie_len = param->u.wpa_ie.len;
3228 	} else {
3229 		kfree(ieee->wpa_ie);
3230 		ieee->wpa_ie = NULL;
3231 		ieee->wpa_ie_len = 0;
3232 	}
3233 
3234 	rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
3235 	return 0;
3236 }
3237 
3238 #define AUTH_ALG_OPEN_SYSTEM			0x1
3239 #define AUTH_ALG_SHARED_KEY			0x2
3240 #define AUTH_ALG_LEAP				0x4
rtllib_wpa_set_auth_algs(struct rtllib_device * ieee,int value)3241 static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
3242 {
3243 
3244 	struct rtllib_security sec = {
3245 		.flags = SEC_AUTH_MODE,
3246 	};
3247 	int ret = 0;
3248 
3249 	if (value & AUTH_ALG_SHARED_KEY) {
3250 		sec.auth_mode = WLAN_AUTH_SHARED_KEY;
3251 		ieee->open_wep = 0;
3252 		ieee->auth_mode = 1;
3253 	} else if (value & AUTH_ALG_OPEN_SYSTEM) {
3254 		sec.auth_mode = WLAN_AUTH_OPEN;
3255 		ieee->open_wep = 1;
3256 		ieee->auth_mode = 0;
3257 	} else if (value & AUTH_ALG_LEAP) {
3258 		sec.auth_mode = WLAN_AUTH_LEAP  >> 6;
3259 		ieee->open_wep = 1;
3260 		ieee->auth_mode = 2;
3261 	}
3262 
3263 
3264 	if (ieee->set_security)
3265 		ieee->set_security(ieee->dev, &sec);
3266 
3267 	return ret;
3268 }
3269 
rtllib_wpa_set_param(struct rtllib_device * ieee,u8 name,u32 value)3270 static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
3271 {
3272 	int ret = 0;
3273 	unsigned long flags;
3274 
3275 	switch (name) {
3276 	case IEEE_PARAM_WPA_ENABLED:
3277 		ret = rtllib_wpa_enable(ieee, value);
3278 		break;
3279 
3280 	case IEEE_PARAM_TKIP_COUNTERMEASURES:
3281 		ieee->tkip_countermeasures = value;
3282 		break;
3283 
3284 	case IEEE_PARAM_DROP_UNENCRYPTED:
3285 	{
3286 		/* HACK:
3287 		 *
3288 		 * wpa_supplicant calls set_wpa_enabled when the driver
3289 		 * is loaded and unloaded, regardless of if WPA is being
3290 		 * used.  No other calls are made which can be used to
3291 		 * determine if encryption will be used or not prior to
3292 		 * association being expected.  If encryption is not being
3293 		 * used, drop_unencrypted is set to false, else true -- we
3294 		 * can use this to determine if the CAP_PRIVACY_ON bit should
3295 		 * be set.
3296 		 */
3297 		struct rtllib_security sec = {
3298 			.flags = SEC_ENABLED,
3299 			.enabled = value,
3300 		};
3301 		ieee->drop_unencrypted = value;
3302 		/* We only change SEC_LEVEL for open mode. Others
3303 		 * are set by ipw_wpa_set_encryption.
3304 		 */
3305 		if (!value) {
3306 			sec.flags |= SEC_LEVEL;
3307 			sec.level = SEC_LEVEL_0;
3308 		} else {
3309 			sec.flags |= SEC_LEVEL;
3310 			sec.level = SEC_LEVEL_1;
3311 		}
3312 		if (ieee->set_security)
3313 			ieee->set_security(ieee->dev, &sec);
3314 		break;
3315 	}
3316 
3317 	case IEEE_PARAM_PRIVACY_INVOKED:
3318 		ieee->privacy_invoked = value;
3319 		break;
3320 
3321 	case IEEE_PARAM_AUTH_ALGS:
3322 		ret = rtllib_wpa_set_auth_algs(ieee, value);
3323 		break;
3324 
3325 	case IEEE_PARAM_IEEE_802_1X:
3326 		ieee->ieee802_1x = value;
3327 		break;
3328 	case IEEE_PARAM_WPAX_SELECT:
3329 		spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
3330 		spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
3331 		break;
3332 
3333 	default:
3334 		printk(KERN_INFO "Unknown WPA param: %d\n", name);
3335 		ret = -EOPNOTSUPP;
3336 	}
3337 
3338 	return ret;
3339 }
3340 
3341 /* implementation borrowed from hostap driver */
rtllib_wpa_set_encryption(struct rtllib_device * ieee,struct ieee_param * param,int param_len,u8 is_mesh)3342 static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
3343 				  struct ieee_param *param, int param_len,
3344 				  u8 is_mesh)
3345 {
3346 	int ret = 0;
3347 	struct lib80211_crypto_ops *ops;
3348 	struct lib80211_crypt_data **crypt;
3349 
3350 	struct rtllib_security sec = {
3351 		.flags = 0,
3352 	};
3353 
3354 	param->u.crypt.err = 0;
3355 	param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
3356 
3357 	if (param_len !=
3358 	    (int) ((char *) param->u.crypt.key - (char *) param) +
3359 	    param->u.crypt.key_len) {
3360 		printk(KERN_INFO "Len mismatch %d, %d\n", param_len,
3361 			       param->u.crypt.key_len);
3362 		return -EINVAL;
3363 	}
3364 	if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
3365 	    param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
3366 	    param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
3367 		if (param->u.crypt.idx >= NUM_WEP_KEYS)
3368 			return -EINVAL;
3369 		crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
3370 	} else {
3371 		return -EINVAL;
3372 	}
3373 
3374 	if (strcmp(param->u.crypt.alg, "none") == 0) {
3375 		if (crypt) {
3376 			sec.enabled = 0;
3377 			sec.level = SEC_LEVEL_0;
3378 			sec.flags |= SEC_ENABLED | SEC_LEVEL;
3379 			lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3380 		}
3381 		goto done;
3382 	}
3383 	sec.enabled = 1;
3384 	sec.flags |= SEC_ENABLED;
3385 
3386 	/* IPW HW cannot build TKIP MIC, host decryption still needed. */
3387 	if (!(ieee->host_encrypt || ieee->host_decrypt) &&
3388 	    strcmp(param->u.crypt.alg, "R-TKIP"))
3389 		goto skip_host_crypt;
3390 
3391 	ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3392 	if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3393 		request_module("rtllib_crypt_wep");
3394 		ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3395 	} else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3396 		request_module("rtllib_crypt_tkip");
3397 		ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3398 	} else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3399 		request_module("rtllib_crypt_ccmp");
3400 		ops = lib80211_get_crypto_ops(param->u.crypt.alg);
3401 	}
3402 	if (ops == NULL) {
3403 		printk(KERN_INFO "unknown crypto alg '%s'\n",
3404 		       param->u.crypt.alg);
3405 		param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
3406 		ret = -EINVAL;
3407 		goto done;
3408 	}
3409 	if (*crypt == NULL || (*crypt)->ops != ops) {
3410 		struct lib80211_crypt_data *new_crypt;
3411 
3412 		lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
3413 
3414 		new_crypt = (struct lib80211_crypt_data *)
3415 			kmalloc(sizeof(*new_crypt), GFP_KERNEL);
3416 		if (new_crypt == NULL) {
3417 			ret = -ENOMEM;
3418 			goto done;
3419 		}
3420 		memset(new_crypt, 0, sizeof(struct lib80211_crypt_data));
3421 		new_crypt->ops = ops;
3422 		if (new_crypt->ops)
3423 			new_crypt->priv =
3424 				new_crypt->ops->init(param->u.crypt.idx);
3425 
3426 		if (new_crypt->priv == NULL) {
3427 			kfree(new_crypt);
3428 			param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
3429 			ret = -EINVAL;
3430 			goto done;
3431 		}
3432 
3433 		*crypt = new_crypt;
3434 	}
3435 
3436 	if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
3437 	    (*crypt)->ops->set_key(param->u.crypt.key,
3438 	    param->u.crypt.key_len, param->u.crypt.seq,
3439 	    (*crypt)->priv) < 0) {
3440 		printk(KERN_INFO "key setting failed\n");
3441 		param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
3442 		ret = -EINVAL;
3443 		goto done;
3444 	}
3445 
3446  skip_host_crypt:
3447 	if (param->u.crypt.set_tx) {
3448 		ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
3449 		sec.active_key = param->u.crypt.idx;
3450 		sec.flags |= SEC_ACTIVE_KEY;
3451 	} else
3452 		sec.flags &= ~SEC_ACTIVE_KEY;
3453 
3454 	if (param->u.crypt.alg != NULL) {
3455 		memcpy(sec.keys[param->u.crypt.idx],
3456 		       param->u.crypt.key,
3457 		       param->u.crypt.key_len);
3458 		sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
3459 		sec.flags |= (1 << param->u.crypt.idx);
3460 
3461 		if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
3462 			sec.flags |= SEC_LEVEL;
3463 			sec.level = SEC_LEVEL_1;
3464 		} else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
3465 			sec.flags |= SEC_LEVEL;
3466 			sec.level = SEC_LEVEL_2;
3467 		} else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
3468 			sec.flags |= SEC_LEVEL;
3469 			sec.level = SEC_LEVEL_3;
3470 		}
3471 	}
3472  done:
3473 	if (ieee->set_security)
3474 		ieee->set_security(ieee->dev, &sec);
3475 
3476 	/* Do not reset port if card is in Managed mode since resetting will
3477 	 * generate new IEEE 802.11 authentication which may end up in looping
3478 	 * with IEEE 802.1X.  If your hardware requires a reset after WEP
3479 	 * configuration (for example... Prism2), implement the reset_port in
3480 	 * the callbacks structures used to initialize the 802.11 stack. */
3481 	if (ieee->reset_on_keychange &&
3482 	    ieee->iw_mode != IW_MODE_INFRA &&
3483 	    ieee->reset_port &&
3484 	    ieee->reset_port(ieee->dev)) {
3485 		printk(KERN_INFO "reset_port failed\n");
3486 		param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
3487 		return -EINVAL;
3488 	}
3489 
3490 	return ret;
3491 }
3492 
rtllib_disauth_skb(struct rtllib_network * beacon,struct rtllib_device * ieee,u16 asRsn)3493 inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon,
3494 		struct rtllib_device *ieee, u16 asRsn)
3495 {
3496 	struct sk_buff *skb;
3497 	struct rtllib_disauth *disauth;
3498 	int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
3499 
3500 	skb = dev_alloc_skb(len);
3501 	if (!skb)
3502 		return NULL;
3503 
3504 	skb_reserve(skb, ieee->tx_headroom);
3505 
3506 	disauth = (struct rtllib_disauth *) skb_put(skb,
3507 		  sizeof(struct rtllib_disauth));
3508 	disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
3509 	disauth->header.duration_id = 0;
3510 
3511 	memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN);
3512 	memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3513 	memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN);
3514 
3515 	disauth->reason = cpu_to_le16(asRsn);
3516 	return skb;
3517 }
3518 
rtllib_disassociate_skb(struct rtllib_network * beacon,struct rtllib_device * ieee,u16 asRsn)3519 inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon,
3520 		struct rtllib_device *ieee, u16 asRsn)
3521 {
3522 	struct sk_buff *skb;
3523 	struct rtllib_disassoc *disass;
3524 	int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
3525 	skb = dev_alloc_skb(len);
3526 
3527 	if (!skb)
3528 		return NULL;
3529 
3530 	skb_reserve(skb, ieee->tx_headroom);
3531 
3532 	disass = (struct rtllib_disassoc *) skb_put(skb,
3533 					 sizeof(struct rtllib_disassoc));
3534 	disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
3535 	disass->header.duration_id = 0;
3536 
3537 	memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
3538 	memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
3539 	memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);
3540 
3541 	disass->reason = cpu_to_le16(asRsn);
3542 	return skb;
3543 }
3544 
SendDisassociation(struct rtllib_device * ieee,bool deauth,u16 asRsn)3545 void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
3546 {
3547 	struct rtllib_network *beacon = &ieee->current_network;
3548 	struct sk_buff *skb;
3549 
3550 	if (deauth)
3551 		skb = rtllib_disauth_skb(beacon, ieee, asRsn);
3552 	else
3553 		skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
3554 
3555 	if (skb)
3556 		softmac_mgmt_xmit(skb, ieee);
3557 }
3558 
rtllib_ap_sec_type(struct rtllib_device * ieee)3559 u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
3560 {
3561 	static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
3562 	static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
3563 	int wpa_ie_len = ieee->wpa_ie_len;
3564 	struct lib80211_crypt_data *crypt;
3565 	int encrypt;
3566 
3567 	crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
3568 	encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
3569 		  || (ieee->host_encrypt && crypt && crypt->ops &&
3570 		  (0 == strcmp(crypt->ops->name, "R-WEP")));
3571 
3572 	/* simply judge  */
3573 	if (encrypt && (wpa_ie_len == 0)) {
3574 		return SEC_ALG_WEP;
3575 	} else if ((wpa_ie_len != 0)) {
3576 		if (((ieee->wpa_ie[0] == 0xdd) &&
3577 		    (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) ||
3578 		    ((ieee->wpa_ie[0] == 0x30) &&
3579 		    (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4))))
3580 			return SEC_ALG_CCMP;
3581 		else
3582 			return SEC_ALG_TKIP;
3583 	} else {
3584 		return SEC_ALG_NONE;
3585 	}
3586 }
3587 
rtllib_wpa_supplicant_ioctl(struct rtllib_device * ieee,struct iw_point * p,u8 is_mesh)3588 int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
3589 				u8 is_mesh)
3590 {
3591 	struct ieee_param *param;
3592 	int ret = 0;
3593 
3594 	down(&ieee->wx_sem);
3595 
3596 	if (p->length < sizeof(struct ieee_param) || !p->pointer) {
3597 		ret = -EINVAL;
3598 		goto out;
3599 	}
3600 
3601 	param = kmalloc(p->length, GFP_KERNEL);
3602 	if (param == NULL) {
3603 		ret = -ENOMEM;
3604 		goto out;
3605 	}
3606 	if (copy_from_user(param, p->pointer, p->length)) {
3607 		kfree(param);
3608 		ret = -EFAULT;
3609 		goto out;
3610 	}
3611 
3612 	switch (param->cmd) {
3613 	case IEEE_CMD_SET_WPA_PARAM:
3614 		ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
3615 					param->u.wpa_param.value);
3616 		break;
3617 
3618 	case IEEE_CMD_SET_WPA_IE:
3619 		ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
3620 		break;
3621 
3622 	case IEEE_CMD_SET_ENCRYPTION:
3623 		ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
3624 		break;
3625 
3626 	case IEEE_CMD_MLME:
3627 		ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
3628 				   param->u.mlme.reason_code);
3629 		break;
3630 
3631 	default:
3632 		printk(KERN_INFO "Unknown WPA supplicant request: %d\n",
3633 		       param->cmd);
3634 		ret = -EOPNOTSUPP;
3635 		break;
3636 	}
3637 
3638 	if (ret == 0 && copy_to_user(p->pointer, param, p->length))
3639 		ret = -EFAULT;
3640 
3641 	kfree(param);
3642 out:
3643 	up(&ieee->wx_sem);
3644 
3645 	return ret;
3646 }
3647 EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
3648 
rtllib_MgntDisconnectIBSS(struct rtllib_device * rtllib)3649 void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
3650 {
3651 	u8	OpMode;
3652 	u8	i;
3653 	bool	bFilterOutNonAssociatedBSSID = false;
3654 
3655 	rtllib->state = RTLLIB_NOLINK;
3656 
3657 	for (i = 0; i < 6; i++)
3658 		rtllib->current_network.bssid[i] = 0x55;
3659 
3660 	rtllib->OpMode = RT_OP_MODE_NO_LINK;
3661 	rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3662 				rtllib->current_network.bssid);
3663 	OpMode = RT_OP_MODE_NO_LINK;
3664 	rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
3665 	rtllib_stop_send_beacons(rtllib);
3666 
3667 	bFilterOutNonAssociatedBSSID = false;
3668 	rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3669 				(u8 *)(&bFilterOutNonAssociatedBSSID));
3670 	notify_wx_assoc_event(rtllib);
3671 
3672 }
3673 
rtllib_MlmeDisassociateRequest(struct rtllib_device * rtllib,u8 * asSta,u8 asRsn)3674 void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta,
3675 				    u8 asRsn)
3676 {
3677 	u8 i;
3678 	u8	OpMode;
3679 
3680 	RemovePeerTS(rtllib, asSta);
3681 
3682 
3683 	if (memcpy(rtllib->current_network.bssid, asSta, 6) == NULL) {
3684 		rtllib->state = RTLLIB_NOLINK;
3685 
3686 		for (i = 0; i < 6; i++)
3687 			rtllib->current_network.bssid[i] = 0x22;
3688 		OpMode = RT_OP_MODE_NO_LINK;
3689 		rtllib->OpMode = RT_OP_MODE_NO_LINK;
3690 		rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
3691 					(u8 *)(&OpMode));
3692 		rtllib_disassociate(rtllib);
3693 
3694 		rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
3695 					rtllib->current_network.bssid);
3696 
3697 	}
3698 
3699 }
3700 
3701 void
rtllib_MgntDisconnectAP(struct rtllib_device * rtllib,u8 asRsn)3702 rtllib_MgntDisconnectAP(
3703 	struct rtllib_device *rtllib,
3704 	u8 asRsn
3705 )
3706 {
3707 	bool bFilterOutNonAssociatedBSSID = false;
3708 
3709 	bFilterOutNonAssociatedBSSID = false;
3710 	rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
3711 				(u8 *)(&bFilterOutNonAssociatedBSSID));
3712 	rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
3713 				       asRsn);
3714 
3715 	rtllib->state = RTLLIB_NOLINK;
3716 }
3717 
rtllib_MgntDisconnect(struct rtllib_device * rtllib,u8 asRsn)3718 bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
3719 {
3720 	if (rtllib->ps != RTLLIB_PS_DISABLED)
3721 		rtllib->sta_wake_up(rtllib->dev);
3722 
3723 	if (rtllib->state == RTLLIB_LINKED) {
3724 		if (rtllib->iw_mode == IW_MODE_ADHOC)
3725 			rtllib_MgntDisconnectIBSS(rtllib);
3726 		if (rtllib->iw_mode == IW_MODE_INFRA)
3727 			rtllib_MgntDisconnectAP(rtllib, asRsn);
3728 
3729 	}
3730 
3731 	return true;
3732 }
3733 EXPORT_SYMBOL(rtllib_MgntDisconnect);
3734 
notify_wx_assoc_event(struct rtllib_device * ieee)3735 void notify_wx_assoc_event(struct rtllib_device *ieee)
3736 {
3737 	union iwreq_data wrqu;
3738 
3739 	if (ieee->cannot_notify)
3740 		return;
3741 
3742 	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3743 	if (ieee->state == RTLLIB_LINKED)
3744 		memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
3745 		       ETH_ALEN);
3746 	else {
3747 
3748 		printk(KERN_INFO "%s(): Tell user space disconnected\n",
3749 		       __func__);
3750 		memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
3751 	}
3752 	wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
3753 }
3754 EXPORT_SYMBOL(notify_wx_assoc_event);
3755