/drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c
C | 3011 lines | 2017 code | 630 blank | 364 comment | 422 complexity | c30d5aace09055f9b59b3c0983c15bec MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
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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 ieee80211
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 "ieee80211.h"
18
19#include <linux/random.h>
20#include <linux/delay.h>
21#include <linux/slab.h>
22#include <linux/version.h>
23#include <asm/uaccess.h>
24
25#include "dot11d.h"
26u8 rsn_authen_cipher_suite[16][4] = {
27 {0x00,0x0F,0xAC,0x00}, //Use group key, //Reserved
28 {0x00,0x0F,0xAC,0x01}, //WEP-40 //RSNA default
29 {0x00,0x0F,0xAC,0x02}, //TKIP //NONE //{used just as default}
30 {0x00,0x0F,0xAC,0x03}, //WRAP-historical
31 {0x00,0x0F,0xAC,0x04}, //CCMP
32 {0x00,0x0F,0xAC,0x05}, //WEP-104
33};
34
35short ieee80211_is_54g(struct ieee80211_network net)
36{
37 return ((net.rates_ex_len > 0) || (net.rates_len > 4));
38}
39
40short ieee80211_is_shortslot(struct ieee80211_network net)
41{
42 return (net.capability & WLAN_CAPABILITY_SHORT_SLOT);
43}
44
45/* returns the total length needed for pleacing the RATE MFIE
46 * tag and the EXTENDED RATE MFIE tag if needed.
47 * It encludes two bytes per tag for the tag itself and its len
48 */
49unsigned int ieee80211_MFIE_rate_len(struct ieee80211_device *ieee)
50{
51 unsigned int rate_len = 0;
52
53 if (ieee->modulation & IEEE80211_CCK_MODULATION)
54 rate_len = IEEE80211_CCK_RATE_LEN + 2;
55
56 if (ieee->modulation & IEEE80211_OFDM_MODULATION)
57
58 rate_len += IEEE80211_OFDM_RATE_LEN + 2;
59
60 return rate_len;
61}
62
63/* pleace the MFIE rate, tag to the memory (double) poined.
64 * Then it updates the pointer so that
65 * it points after the new MFIE tag added.
66 */
67void ieee80211_MFIE_Brate(struct ieee80211_device *ieee, u8 **tag_p)
68{
69 u8 *tag = *tag_p;
70
71 if (ieee->modulation & IEEE80211_CCK_MODULATION){
72 *tag++ = MFIE_TYPE_RATES;
73 *tag++ = 4;
74 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
75 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
76 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
77 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
78 }
79
80 /* We may add an option for custom rates that specific HW might support */
81 *tag_p = tag;
82}
83
84void ieee80211_MFIE_Grate(struct ieee80211_device *ieee, u8 **tag_p)
85{
86 u8 *tag = *tag_p;
87
88 if (ieee->modulation & IEEE80211_OFDM_MODULATION){
89
90 *tag++ = MFIE_TYPE_RATES_EX;
91 *tag++ = 8;
92 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_6MB;
93 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_9MB;
94 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_12MB;
95 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_18MB;
96 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
97 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_36MB;
98 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_48MB;
99 *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_54MB;
100
101 }
102
103 /* We may add an option for custom rates that specific HW might support */
104 *tag_p = tag;
105}
106
107
108void ieee80211_WMM_Info(struct ieee80211_device *ieee, u8 **tag_p) {
109 u8 *tag = *tag_p;
110
111 *tag++ = MFIE_TYPE_GENERIC; //0
112 *tag++ = 7;
113 *tag++ = 0x00;
114 *tag++ = 0x50;
115 *tag++ = 0xf2;
116 *tag++ = 0x02;//5
117 *tag++ = 0x00;
118 *tag++ = 0x01;
119#ifdef SUPPORT_USPD
120 if(ieee->current_network.wmm_info & 0x80) {
121 *tag++ = 0x0f|MAX_SP_Len;
122 } else {
123 *tag++ = MAX_SP_Len;
124 }
125#else
126 *tag++ = MAX_SP_Len;
127#endif
128 *tag_p = tag;
129}
130
131void ieee80211_TURBO_Info(struct ieee80211_device *ieee, u8 **tag_p) {
132 u8 *tag = *tag_p;
133
134 *tag++ = MFIE_TYPE_GENERIC; //0
135 *tag++ = 7;
136 *tag++ = 0x00;
137 *tag++ = 0xe0;
138 *tag++ = 0x4c;
139 *tag++ = 0x01;//5
140 *tag++ = 0x02;
141 *tag++ = 0x11;
142 *tag++ = 0x00;
143
144 *tag_p = tag;
145 printk(KERN_ALERT "This is enable turbo mode IE process\n");
146}
147
148void enqueue_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb)
149{
150 int nh;
151 nh = (ieee->mgmt_queue_head +1) % MGMT_QUEUE_NUM;
152
153/*
154 * if the queue is full but we have newer frames then
155 * just overwrites the oldest.
156 *
157 * if (nh == ieee->mgmt_queue_tail)
158 * return -1;
159 */
160 ieee->mgmt_queue_head = nh;
161 ieee->mgmt_queue_ring[nh] = skb;
162
163 //return 0;
164}
165
166struct sk_buff *dequeue_mgmt(struct ieee80211_device *ieee)
167{
168 struct sk_buff *ret;
169
170 if(ieee->mgmt_queue_tail == ieee->mgmt_queue_head)
171 return NULL;
172
173 ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail];
174
175 ieee->mgmt_queue_tail =
176 (ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM;
177
178 return ret;
179}
180
181void init_mgmt_queue(struct ieee80211_device *ieee)
182{
183 ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
184}
185
186
187void ieee80211_sta_wakeup(struct ieee80211_device *ieee, short nl);
188
189inline void softmac_mgmt_xmit(struct sk_buff *skb, struct ieee80211_device *ieee)
190{
191 unsigned long flags;
192 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
193 struct ieee80211_hdr_3addr *header=
194 (struct ieee80211_hdr_3addr *) skb->data;
195
196
197 spin_lock_irqsave(&ieee->lock, flags);
198
199 /* called with 2nd param 0, no mgmt lock required */
200 ieee80211_sta_wakeup(ieee,0);
201
202 if(single){
203 if(ieee->queue_stop){
204
205 enqueue_mgmt(ieee,skb);
206 }else{
207 header->seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
208
209 if (ieee->seq_ctrl[0] == 0xFFF)
210 ieee->seq_ctrl[0] = 0;
211 else
212 ieee->seq_ctrl[0]++;
213
214 /* avoid watchdog triggers */
215 ieee->dev->trans_start = jiffies;
216 ieee->softmac_data_hard_start_xmit(skb,ieee->dev,ieee->basic_rate);
217 }
218
219 spin_unlock_irqrestore(&ieee->lock, flags);
220 }else{
221 spin_unlock_irqrestore(&ieee->lock, flags);
222 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
223
224 header->seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
225
226 if (ieee->seq_ctrl[0] == 0xFFF)
227 ieee->seq_ctrl[0] = 0;
228 else
229 ieee->seq_ctrl[0]++;
230
231 /* avoid watchdog triggers */
232 ieee->dev->trans_start = jiffies;
233 ieee->softmac_hard_start_xmit(skb,ieee->dev);
234
235 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
236 }
237}
238
239
240inline void softmac_ps_mgmt_xmit(struct sk_buff *skb, struct ieee80211_device *ieee)
241{
242
243 short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
244 struct ieee80211_hdr_3addr *header =
245 (struct ieee80211_hdr_3addr *) skb->data;
246
247
248 if(single){
249
250 header->seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
251
252 if (ieee->seq_ctrl[0] == 0xFFF)
253 ieee->seq_ctrl[0] = 0;
254 else
255 ieee->seq_ctrl[0]++;
256
257 /* avoid watchdog triggers */
258 ieee->dev->trans_start = jiffies;
259 ieee->softmac_data_hard_start_xmit(skb,ieee->dev,ieee->basic_rate);
260
261 }else{
262
263 header->seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
264
265 if (ieee->seq_ctrl[0] == 0xFFF)
266 ieee->seq_ctrl[0] = 0;
267 else
268 ieee->seq_ctrl[0]++;
269
270 /* avoid watchdog triggers */
271 ieee->dev->trans_start = jiffies;
272 ieee->softmac_hard_start_xmit(skb,ieee->dev);
273
274 }
275// dev_kfree_skb_any(skb);//edit by thomas
276}
277//by amy for power save
278inline struct sk_buff *ieee80211_disassociate_skb(
279 struct ieee80211_network *beacon,
280 struct ieee80211_device *ieee,
281 u8 asRsn)
282{
283 struct sk_buff *skb;
284 struct ieee80211_disassoc_frame *disass;
285
286 skb = dev_alloc_skb(sizeof(struct ieee80211_disassoc_frame));
287 if (!skb)
288 return NULL;
289
290 disass = (struct ieee80211_disassoc_frame *) skb_put(skb,sizeof(struct ieee80211_disassoc_frame));
291 disass->header.frame_control = cpu_to_le16(IEEE80211_STYPE_DISASSOC);
292 disass->header.duration_id = 0;
293
294 memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
295 memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
296 memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);
297
298 disass->reasoncode = asRsn;
299 return skb;
300}
301void
302SendDisassociation(
303 struct ieee80211_device *ieee,
304 u8* asSta,
305 u8 asRsn
306)
307{
308 struct ieee80211_network *beacon = &ieee->current_network;
309 struct sk_buff *skb;
310 skb = ieee80211_disassociate_skb(beacon,ieee,asRsn);
311 if (skb){
312 softmac_mgmt_xmit(skb, ieee);
313 //dev_kfree_skb_any(skb);//edit by thomas
314 }
315}
316
317//by amy for power save
318inline struct sk_buff *ieee80211_probe_req(struct ieee80211_device *ieee)
319{
320 unsigned int len,rate_len;
321 u8 *tag;
322 struct sk_buff *skb;
323 struct ieee80211_probe_request *req;
324
325 len = ieee->current_network.ssid_len;
326
327 rate_len = ieee80211_MFIE_rate_len(ieee);
328
329 skb = dev_alloc_skb(sizeof(struct ieee80211_probe_request) +
330 2 + len + rate_len);
331 if (!skb)
332 return NULL;
333
334 req = (struct ieee80211_probe_request *) skb_put(skb,sizeof(struct ieee80211_probe_request));
335 req->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
336 req->header.duration_id = 0; //FIXME: is this OK ?
337
338 memset(req->header.addr1, 0xff, ETH_ALEN);
339 memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
340 memset(req->header.addr3, 0xff, ETH_ALEN);
341
342 tag = (u8 *) skb_put(skb,len+2+rate_len);
343
344 *tag++ = MFIE_TYPE_SSID;
345 *tag++ = len;
346 memcpy(tag, ieee->current_network.ssid, len);
347 tag += len;
348 ieee80211_MFIE_Brate(ieee,&tag);
349 ieee80211_MFIE_Grate(ieee,&tag);
350
351 return skb;
352}
353
354struct sk_buff *ieee80211_get_beacon_(struct ieee80211_device *ieee);
355
356void ext_ieee80211_send_beacon_wq(struct ieee80211_device *ieee)
357{
358 struct sk_buff *skb;
359
360 //unsigned long flags;
361
362 skb = ieee80211_get_beacon_(ieee);
363
364 if (skb){
365 softmac_mgmt_xmit(skb, ieee);
366 ieee->softmac_stats.tx_beacons++;
367 dev_kfree_skb_any(skb);//edit by thomas
368 }
369
370
371 //printk(KERN_WARNING "[1] beacon sending!\n");
372 ieee->beacon_timer.expires = jiffies +
373 (MSECS( ieee->current_network.beacon_interval -5));
374
375 //spin_lock_irqsave(&ieee->beacon_lock,flags);
376 if(ieee->beacon_txing)
377 add_timer(&ieee->beacon_timer);
378 //spin_unlock_irqrestore(&ieee->beacon_lock,flags);
379}
380
381void ieee80211_send_beacon(struct ieee80211_device *ieee)
382{
383 struct sk_buff *skb;
384
385 //unsigned long flags;
386
387 skb = ieee80211_get_beacon_(ieee);
388
389 if (skb){
390 softmac_mgmt_xmit(skb, ieee);
391 ieee->softmac_stats.tx_beacons++;
392 dev_kfree_skb_any(skb);//edit by thomas
393 }
394
395 //printk(KERN_WARNING "[1] beacon sending!\n");
396 ieee->beacon_timer.expires = jiffies +
397 (MSECS( ieee->current_network.beacon_interval -5));
398
399 //spin_lock_irqsave(&ieee->beacon_lock,flags);
400 if(ieee->beacon_txing)
401 add_timer(&ieee->beacon_timer);
402 //spin_unlock_irqrestore(&ieee->beacon_lock,flags);
403}
404
405
406void ieee80211_send_beacon_cb(unsigned long _ieee)
407{
408 struct ieee80211_device *ieee =
409 (struct ieee80211_device *) _ieee;
410 unsigned long flags;
411
412 spin_lock_irqsave(&ieee->beacon_lock, flags);
413 ieee80211_send_beacon(ieee);
414 spin_unlock_irqrestore(&ieee->beacon_lock, flags);
415}
416
417void ieee80211_send_probe(struct ieee80211_device *ieee)
418{
419 struct sk_buff *skb;
420
421 skb = ieee80211_probe_req(ieee);
422 if (skb){
423 softmac_mgmt_xmit(skb, ieee);
424 ieee->softmac_stats.tx_probe_rq++;
425 //dev_kfree_skb_any(skb);//edit by thomas
426 }
427}
428
429void ieee80211_send_probe_requests(struct ieee80211_device *ieee)
430{
431 if (ieee->active_scan && (ieee->softmac_features & IEEE_SOFTMAC_PROBERQ)){
432 ieee80211_send_probe(ieee);
433 ieee80211_send_probe(ieee);
434 }
435}
436
437/* this performs syncro scan blocking the caller until all channels
438 * in the allowed channel map has been checked.
439 */
440void ieee80211_softmac_scan_syncro(struct ieee80211_device *ieee)
441{
442 short ch = 0;
443 u8 channel_map[MAX_CHANNEL_NUMBER+1];
444 memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER+1);
445 down(&ieee->scan_sem);
446// printk("==================> Sync scan\n");
447
448 while(1)
449 {
450
451 do{
452 ch++;
453 if (ch > MAX_CHANNEL_NUMBER)
454 goto out; /* scan completed */
455
456 }while(!channel_map[ch]);
457 /* this function can be called in two situations
458 * 1- We have switched to ad-hoc mode and we are
459 * performing a complete syncro scan before conclude
460 * there are no interesting cell and to create a
461 * new one. In this case the link state is
462 * IEEE80211_NOLINK until we found an interesting cell.
463 * If so the ieee8021_new_net, called by the RX path
464 * will set the state to IEEE80211_LINKED, so we stop
465 * scanning
466 * 2- We are linked and the root uses run iwlist scan.
467 * So we switch to IEEE80211_LINKED_SCANNING to remember
468 * that we are still logically linked (not interested in
469 * new network events, despite for updating the net list,
470 * but we are temporarly 'unlinked' as the driver shall
471 * not filter RX frames and the channel is changing.
472 * So the only situation in witch are interested is to check
473 * if the state become LINKED because of the #1 situation
474 */
475
476 if (ieee->state == IEEE80211_LINKED)
477 goto out;
478
479 ieee->set_chan(ieee->dev, ch);
480// printk("=====>channel=%d ",ch);
481 if(channel_map[ch] == 1)
482 {
483// printk("====send probe request\n");
484 ieee80211_send_probe_requests(ieee);
485 }
486 /* this prevent excessive time wait when we
487 * need to wait for a syncro scan to end..
488 */
489 if (ieee->sync_scan_hurryup)
490 goto out;
491
492
493 msleep_interruptible_rtl(IEEE80211_SOFTMAC_SCAN_TIME);
494
495 }
496out:
497 ieee->sync_scan_hurryup = 0;
498 up(&ieee->scan_sem);
499 if(IS_DOT11D_ENABLE(ieee))
500 DOT11D_ScanComplete(ieee);
501}
502
503void ieee80211_softmac_ips_scan_syncro(struct ieee80211_device *ieee)
504{
505 int ch;
506 unsigned int watch_dog = 0;
507 u8 channel_map[MAX_CHANNEL_NUMBER+1];
508 memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER+1);
509 down(&ieee->scan_sem);
510 ch = ieee->current_network.channel;
511// if(ieee->sync_scan_hurryup)
512// {
513
514// printk("stop scan sync\n");
515// goto out;
516// }
517// printk("=======hh===============>ips scan\n");
518 while(1)
519 {
520 /* this function can be called in two situations
521 * 1- We have switched to ad-hoc mode and we are
522 * performing a complete syncro scan before conclude
523 * there are no interesting cell and to create a
524 * new one. In this case the link state is
525 * IEEE80211_NOLINK until we found an interesting cell.
526 * If so the ieee8021_new_net, called by the RX path
527 * will set the state to IEEE80211_LINKED, so we stop
528 * scanning
529 * 2- We are linked and the root uses run iwlist scan.
530 * So we switch to IEEE80211_LINKED_SCANNING to remember
531 * that we are still logically linked (not interested in
532 * new network events, despite for updating the net list,
533 * but we are temporarly 'unlinked' as the driver shall
534 * not filter RX frames and the channel is changing.
535 * So the only situation in witch are interested is to check
536 * if the state become LINKED because of the #1 situation
537 */
538 if (ieee->state == IEEE80211_LINKED)
539 {
540 goto out;
541 }
542 if(channel_map[ieee->current_network.channel] > 0)
543 {
544 ieee->set_chan(ieee->dev, ieee->current_network.channel);
545// printk("======>channel=%d ",ieee->current_network.channel);
546 }
547 if(channel_map[ieee->current_network.channel] == 1)
548 {
549// printk("====send probe request\n");
550 ieee80211_send_probe_requests(ieee);
551 }
552 /* this prevent excessive time wait when we
553 * need to wait for a syncro scan to end..
554 */
555// if (ieee->sync_scan_hurryup)
556// goto out;
557
558 msleep_interruptible_rtl(IEEE80211_SOFTMAC_SCAN_TIME);
559
560 do{
561 if (watch_dog++ >= MAX_CHANNEL_NUMBER)
562 // if (++watch_dog >= 15);//MAX_CHANNEL_NUMBER) //YJ,modified,080630
563 goto out; /* scan completed */
564
565 ieee->current_network.channel = (ieee->current_network.channel + 1)%MAX_CHANNEL_NUMBER;
566 }while(!channel_map[ieee->current_network.channel]);
567 }
568out:
569 //ieee->sync_scan_hurryup = 0;
570 //ieee->set_chan(ieee->dev, ch);
571 //ieee->current_network.channel = ch;
572 ieee->actscanning = false;
573 up(&ieee->scan_sem);
574 if(IS_DOT11D_ENABLE(ieee))
575 DOT11D_ScanComplete(ieee);
576}
577
578void ieee80211_softmac_scan_wq(struct work_struct *work)
579{
580 struct delayed_work *dwork = to_delayed_work(work);
581 struct ieee80211_device *ieee = container_of(dwork, struct ieee80211_device, softmac_scan_wq);
582 static short watchdog = 0;
583 u8 channel_map[MAX_CHANNEL_NUMBER+1];
584 memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER+1);
585// printk("ieee80211_softmac_scan_wq ENABLE_IPS\n");
586// printk("in %s\n",__func__);
587 down(&ieee->scan_sem);
588
589 do{
590 ieee->current_network.channel =
591 (ieee->current_network.channel + 1) % MAX_CHANNEL_NUMBER;
592 if (watchdog++ > MAX_CHANNEL_NUMBER)
593 goto out; /* no good chans */
594
595 }while(!channel_map[ieee->current_network.channel]);
596
597 //printk("current_network.channel:%d\n", ieee->current_network.channel);
598 if (ieee->scanning == 0 )
599 {
600 printk("error out, scanning = 0\n");
601 goto out;
602 }
603 ieee->set_chan(ieee->dev, ieee->current_network.channel);
604 if(channel_map[ieee->current_network.channel] == 1)
605 ieee80211_send_probe_requests(ieee);
606
607 queue_delayed_work(ieee->wq, &ieee->softmac_scan_wq, IEEE80211_SOFTMAC_SCAN_TIME);
608 up(&ieee->scan_sem);
609 return;
610out:
611 ieee->actscanning = false;
612 watchdog = 0;
613 ieee->scanning = 0;
614 up(&ieee->scan_sem);
615
616 if(IS_DOT11D_ENABLE(ieee))
617 DOT11D_ScanComplete(ieee);
618 return;
619}
620
621void ieee80211_beacons_start(struct ieee80211_device *ieee)
622{
623 unsigned long flags;
624
625 spin_lock_irqsave(&ieee->beacon_lock,flags);
626
627 ieee->beacon_txing = 1;
628 ieee80211_send_beacon(ieee);
629
630 spin_unlock_irqrestore(&ieee->beacon_lock,flags);
631}
632
633void ieee80211_beacons_stop(struct ieee80211_device *ieee)
634{
635 unsigned long flags;
636
637 spin_lock_irqsave(&ieee->beacon_lock,flags);
638
639 ieee->beacon_txing = 0;
640 del_timer_sync(&ieee->beacon_timer);
641
642 spin_unlock_irqrestore(&ieee->beacon_lock,flags);
643
644}
645
646
647void ieee80211_stop_send_beacons(struct ieee80211_device *ieee)
648{
649 if(ieee->stop_send_beacons)
650 ieee->stop_send_beacons(ieee->dev);
651 if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
652 ieee80211_beacons_stop(ieee);
653}
654
655
656void ieee80211_start_send_beacons(struct ieee80211_device *ieee)
657{
658 if(ieee->start_send_beacons)
659 ieee->start_send_beacons(ieee->dev);
660 if(ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
661 ieee80211_beacons_start(ieee);
662}
663
664
665void ieee80211_softmac_stop_scan(struct ieee80211_device *ieee)
666{
667// unsigned long flags;
668
669 //ieee->sync_scan_hurryup = 1;
670
671 down(&ieee->scan_sem);
672// spin_lock_irqsave(&ieee->lock, flags);
673
674 if (ieee->scanning == 1){
675 ieee->scanning = 0;
676 //del_timer_sync(&ieee->scan_timer);
677 cancel_delayed_work(&ieee->softmac_scan_wq);
678 }
679
680// spin_unlock_irqrestore(&ieee->lock, flags);
681 up(&ieee->scan_sem);
682}
683
684void ieee80211_stop_scan(struct ieee80211_device *ieee)
685{
686 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN)
687 ieee80211_softmac_stop_scan(ieee);
688 else
689 ieee->stop_scan(ieee->dev);
690}
691
692/* called with ieee->lock held */
693void ieee80211_rtl_start_scan(struct ieee80211_device *ieee)
694{
695 if(IS_DOT11D_ENABLE(ieee) )
696 {
697 if(IS_COUNTRY_IE_VALID(ieee))
698 {
699 RESET_CIE_WATCHDOG(ieee);
700 }
701 }
702 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN){
703 if (ieee->scanning == 0)
704 {
705 ieee->scanning = 1;
706 //ieee80211_softmac_scan(ieee);
707 // queue_work(ieee->wq, &ieee->softmac_scan_wq);
708 //care this,1203,2007,by lawrence
709#if 1
710 queue_delayed_work(ieee->wq, &ieee->softmac_scan_wq,0);
711#endif
712 }
713 }else
714 ieee->start_scan(ieee->dev);
715
716}
717
718/* called with wx_sem held */
719void ieee80211_start_scan_syncro(struct ieee80211_device *ieee)
720{
721 if(IS_DOT11D_ENABLE(ieee) )
722 {
723 if(IS_COUNTRY_IE_VALID(ieee))
724 {
725 RESET_CIE_WATCHDOG(ieee);
726 }
727 }
728 ieee->sync_scan_hurryup = 0;
729
730 if (ieee->softmac_features & IEEE_SOFTMAC_SCAN)
731 ieee80211_softmac_scan_syncro(ieee);
732 else
733 ieee->scan_syncro(ieee->dev);
734
735}
736
737inline struct sk_buff *ieee80211_authentication_req(struct ieee80211_network *beacon,
738 struct ieee80211_device *ieee, int challengelen)
739{
740 struct sk_buff *skb;
741 struct ieee80211_authentication *auth;
742
743 skb = dev_alloc_skb(sizeof(struct ieee80211_authentication) + challengelen);
744
745 if (!skb) return NULL;
746
747 auth = (struct ieee80211_authentication *)
748 skb_put(skb, sizeof(struct ieee80211_authentication));
749
750 auth->header.frame_ctl = IEEE80211_STYPE_AUTH;
751 if (challengelen) auth->header.frame_ctl |= IEEE80211_FCTL_WEP;
752
753 auth->header.duration_id = 0x013a; //FIXME
754
755 memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN);
756 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
757 memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN);
758
759 auth->algorithm = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
760
761 auth->transaction = cpu_to_le16(ieee->associate_seq);
762 ieee->associate_seq++;
763
764 auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
765
766 return skb;
767
768}
769
770static struct sk_buff* ieee80211_probe_resp(struct ieee80211_device *ieee, u8 *dest)
771{
772 u8 *tag;
773 int beacon_size;
774 struct ieee80211_probe_response *beacon_buf;
775 struct sk_buff *skb;
776 int encrypt;
777 int atim_len,erp_len;
778 struct ieee80211_crypt_data* crypt;
779
780 char *ssid = ieee->current_network.ssid;
781 int ssid_len = ieee->current_network.ssid_len;
782 int rate_len = ieee->current_network.rates_len+2;
783 int rate_ex_len = ieee->current_network.rates_ex_len;
784 int wpa_ie_len = ieee->wpa_ie_len;
785 if(rate_ex_len > 0) rate_ex_len+=2;
786
787 if(ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
788 atim_len = 4;
789 else
790 atim_len = 0;
791
792 if(ieee80211_is_54g(ieee->current_network))
793 erp_len = 3;
794 else
795 erp_len = 0;
796
797 beacon_size = sizeof(struct ieee80211_probe_response)+
798 ssid_len
799 +3 //channel
800 +rate_len
801 +rate_ex_len
802 +atim_len
803 +wpa_ie_len
804 +erp_len;
805
806 skb = dev_alloc_skb(beacon_size);
807
808 if (!skb)
809 return NULL;
810
811 beacon_buf = (struct ieee80211_probe_response*) skb_put(skb, beacon_size);
812
813 memcpy (beacon_buf->header.addr1, dest,ETH_ALEN);
814 memcpy (beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
815 memcpy (beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN);
816
817 beacon_buf->header.duration_id = 0; //FIXME
818 beacon_buf->beacon_interval =
819 cpu_to_le16(ieee->current_network.beacon_interval);
820 beacon_buf->capability =
821 cpu_to_le16(ieee->current_network.capability & WLAN_CAPABILITY_IBSS);
822
823 if(ieee->short_slot && (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_SLOT))
824 cpu_to_le16((beacon_buf->capability |= WLAN_CAPABILITY_SHORT_SLOT));
825
826 crypt = ieee->crypt[ieee->tx_keyidx];
827
828 encrypt = ieee->host_encrypt && crypt && crypt->ops &&
829 ((0 == strcmp(crypt->ops->name, "WEP")) || wpa_ie_len);
830
831 if (encrypt)
832 beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
833
834
835 beacon_buf->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_RESP);
836
837 beacon_buf->info_element.id = MFIE_TYPE_SSID;
838 beacon_buf->info_element.len = ssid_len;
839
840 tag = (u8*) beacon_buf->info_element.data;
841
842 memcpy(tag, ssid, ssid_len);
843
844 tag += ssid_len;
845
846 *(tag++) = MFIE_TYPE_RATES;
847 *(tag++) = rate_len-2;
848 memcpy(tag,ieee->current_network.rates,rate_len-2);
849 tag+=rate_len-2;
850
851 *(tag++) = MFIE_TYPE_DS_SET;
852 *(tag++) = 1;
853 *(tag++) = ieee->current_network.channel;
854
855 if(atim_len){
856 *(tag++) = MFIE_TYPE_IBSS_SET;
857 *(tag++) = 2;
858 *((u16*)(tag)) = cpu_to_le16(ieee->current_network.atim_window);
859 tag+=2;
860 }
861
862 if(erp_len){
863 *(tag++) = MFIE_TYPE_ERP;
864 *(tag++) = 1;
865 *(tag++) = 0;
866 }
867
868 if(rate_ex_len){
869 *(tag++) = MFIE_TYPE_RATES_EX;
870 *(tag++) = rate_ex_len-2;
871 memcpy(tag,ieee->current_network.rates_ex,rate_ex_len-2);
872 tag+=rate_ex_len-2;
873 }
874
875 if (wpa_ie_len)
876 {
877 if (ieee->iw_mode == IW_MODE_ADHOC)
878 {//as Windows will set pairwise key same as the group key which is not allowed in Linux, so set this for IOT issue. WB 2008.07.07
879 memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
880 }
881
882 memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
883 }
884
885 skb->dev = ieee->dev;
886 return skb;
887}
888
889struct sk_buff* ieee80211_assoc_resp(struct ieee80211_device *ieee, u8 *dest)
890{
891 struct sk_buff *skb;
892 u8* tag;
893
894 struct ieee80211_crypt_data* crypt;
895 struct ieee80211_assoc_response_frame *assoc;
896 short encrypt;
897
898 unsigned int rate_len = ieee80211_MFIE_rate_len(ieee);
899 int len = sizeof(struct ieee80211_assoc_response_frame) + rate_len;
900
901 skb = dev_alloc_skb(len);
902
903 if (!skb)
904 return NULL;
905
906 assoc = (struct ieee80211_assoc_response_frame *)
907 skb_put(skb,sizeof(struct ieee80211_assoc_response_frame));
908
909 assoc->header.frame_control = cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP);
910 memcpy(assoc->header.addr1, dest,ETH_ALEN);
911 memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
912 memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
913 assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
914 WLAN_CAPABILITY_BSS : WLAN_CAPABILITY_IBSS);
915
916
917 if(ieee->short_slot)
918 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT);
919
920 if (ieee->host_encrypt)
921 crypt = ieee->crypt[ieee->tx_keyidx];
922 else crypt = NULL;
923
924 encrypt = ( crypt && crypt->ops);
925
926 if (encrypt)
927 assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
928
929 assoc->status = 0;
930 assoc->aid = cpu_to_le16(ieee->assoc_id);
931 if (ieee->assoc_id == 0x2007) ieee->assoc_id=0;
932 else ieee->assoc_id++;
933
934 tag = (u8*) skb_put(skb, rate_len);
935
936 ieee80211_MFIE_Brate(ieee, &tag);
937 ieee80211_MFIE_Grate(ieee, &tag);
938
939 return skb;
940}
941
942struct sk_buff* ieee80211_auth_resp(struct ieee80211_device *ieee,int status, u8 *dest)
943{
944 struct sk_buff *skb;
945 struct ieee80211_authentication *auth;
946
947 skb = dev_alloc_skb(sizeof(struct ieee80211_authentication)+1);
948
949 if (!skb)
950 return NULL;
951
952 skb->len = sizeof(struct ieee80211_authentication);
953
954 auth = (struct ieee80211_authentication *)skb->data;
955
956 auth->status = cpu_to_le16(status);
957 auth->transaction = cpu_to_le16(2);
958 auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
959
960 memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
961 memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
962 memcpy(auth->header.addr1, dest, ETH_ALEN);
963 auth->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_AUTH);
964 return skb;
965
966
967}
968
969struct sk_buff* ieee80211_null_func(struct ieee80211_device *ieee,short pwr)
970{
971 struct sk_buff *skb;
972 struct ieee80211_hdr_3addr* hdr;
973
974 skb = dev_alloc_skb(sizeof(struct ieee80211_hdr_3addr));
975
976 if (!skb)
977 return NULL;
978
979 hdr = (struct ieee80211_hdr_3addr*)skb_put(skb,sizeof(struct ieee80211_hdr_3addr));
980
981 memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN);
982 memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN);
983 memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN);
984
985 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
986 IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_TODS |
987 (pwr ? IEEE80211_FCTL_PM:0));
988
989 return skb;
990
991
992}
993
994
995void ieee80211_resp_to_assoc_rq(struct ieee80211_device *ieee, u8* dest)
996{
997 struct sk_buff *buf = ieee80211_assoc_resp(ieee, dest);
998
999 if (buf){
1000 softmac_mgmt_xmit(buf, ieee);
1001 dev_kfree_skb_any(buf);//edit by thomas
1002 }
1003}
1004
1005
1006void ieee80211_resp_to_auth(struct ieee80211_device *ieee, int s, u8* dest)
1007{
1008 struct sk_buff *buf = ieee80211_auth_resp(ieee, s, dest);
1009
1010 if (buf){
1011 softmac_mgmt_xmit(buf, ieee);
1012 dev_kfree_skb_any(buf);//edit by thomas
1013 }
1014}
1015
1016
1017void ieee80211_resp_to_probe(struct ieee80211_device *ieee, u8 *dest)
1018{
1019
1020 struct sk_buff *buf = ieee80211_probe_resp(ieee, dest);
1021
1022 if (buf) {
1023 softmac_mgmt_xmit(buf, ieee);
1024 dev_kfree_skb_any(buf);//edit by thomas
1025 }
1026}
1027
1028
1029inline struct sk_buff *ieee80211_association_req(struct ieee80211_network *beacon,struct ieee80211_device *ieee)
1030{
1031 struct sk_buff *skb;
1032 //unsigned long flags;
1033
1034 struct ieee80211_assoc_request_frame *hdr;
1035 u8 *tag;
1036 //short info_addr = 0;
1037 //int i;
1038 //u16 suite_count = 0;
1039 //u8 suit_select = 0;
1040 unsigned int wpa_len = beacon->wpa_ie_len;
1041 //struct net_device *dev = ieee->dev;
1042 //union iwreq_data wrqu;
1043 //u8 *buff;
1044 //u8 *p;
1045#if 1
1046 // for testing purpose
1047 unsigned int rsn_len = beacon->rsn_ie_len;
1048#else
1049 unsigned int rsn_len = beacon->rsn_ie_len - 4;
1050#endif
1051 unsigned int rate_len = ieee80211_MFIE_rate_len(ieee);
1052 unsigned int wmm_info_len = beacon->QoS_Enable?9:0;
1053 unsigned int turbo_info_len = beacon->Turbo_Enable?9:0;
1054
1055 u8 encry_proto = ieee->wpax_type_notify & 0xff;
1056 //u8 pairwise_type = (ieee->wpax_type_notify >> 8) & 0xff;
1057 //u8 authen_type = (ieee->wpax_type_notify >> 16) & 0xff;
1058
1059 int len = 0;
1060
1061 //[0] Notify type of encryption: WPA/WPA2
1062 //[1] pair wise type
1063 //[2] authen type
1064 if(ieee->wpax_type_set) {
1065 if (IEEE_PROTO_WPA == encry_proto) {
1066 rsn_len = 0;
1067 } else if (IEEE_PROTO_RSN == encry_proto) {
1068 wpa_len = 0;
1069 }
1070 }
1071 len = sizeof(struct ieee80211_assoc_request_frame)+
1072 + beacon->ssid_len//essid tagged val
1073 + rate_len//rates tagged val
1074 + wpa_len
1075 + rsn_len
1076 + wmm_info_len
1077 + turbo_info_len;
1078
1079 skb = dev_alloc_skb(len);
1080
1081 if (!skb)
1082 return NULL;
1083
1084 hdr = (struct ieee80211_assoc_request_frame *)
1085 skb_put(skb, sizeof(struct ieee80211_assoc_request_frame));
1086
1087
1088 hdr->header.frame_control = IEEE80211_STYPE_ASSOC_REQ;
1089 hdr->header.duration_id= 37; //FIXME
1090 memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN);
1091 memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
1092 memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN);
1093 memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);//for HW security, John
1094
1095 hdr->capability = cpu_to_le16(WLAN_CAPABILITY_BSS);
1096 if (beacon->capability & WLAN_CAPABILITY_PRIVACY )
1097 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
1098 if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1099 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
1100
1101 if(ieee->short_slot)
1102 hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT);
1103
1104 hdr->listen_interval = 0xa; //FIXME
1105
1106 hdr->info_element.id = MFIE_TYPE_SSID;
1107
1108 hdr->info_element.len = beacon->ssid_len;
1109 tag = skb_put(skb, beacon->ssid_len);
1110 memcpy(tag, beacon->ssid, beacon->ssid_len);
1111
1112 tag = skb_put(skb, rate_len);
1113
1114 ieee80211_MFIE_Brate(ieee, &tag);
1115 ieee80211_MFIE_Grate(ieee, &tag);
1116
1117 //add rsn==0 condition for ap's mix security mode(wpa+wpa2), john2007.8.9
1118 //choose AES encryption as default algorithm while using mixed mode
1119
1120 tag = skb_put(skb,ieee->wpa_ie_len);
1121 memcpy(tag,ieee->wpa_ie,ieee->wpa_ie_len);
1122
1123 tag = skb_put(skb,wmm_info_len);
1124 if(wmm_info_len) {
1125 ieee80211_WMM_Info(ieee, &tag);
1126 }
1127 tag = skb_put(skb,turbo_info_len);
1128 if(turbo_info_len) {
1129 ieee80211_TURBO_Info(ieee, &tag);
1130 }
1131
1132 return skb;
1133}
1134
1135void ieee80211_associate_abort(struct ieee80211_device *ieee)
1136{
1137
1138 unsigned long flags;
1139 spin_lock_irqsave(&ieee->lock, flags);
1140
1141 ieee->associate_seq++;
1142
1143 /* don't scan, and avoid to have the RX path possibily
1144 * try again to associate. Even do not react to AUTH or
1145 * ASSOC response. Just wait for the retry wq to be scheduled.
1146 * Here we will check if there are good nets to associate
1147 * with, so we retry or just get back to NO_LINK and scanning
1148 */
1149 if (ieee->state == IEEE80211_ASSOCIATING_AUTHENTICATING){
1150 IEEE80211_DEBUG_MGMT("Authentication failed\n");
1151 ieee->softmac_stats.no_auth_rs++;
1152 }else{
1153 IEEE80211_DEBUG_MGMT("Association failed\n");
1154 ieee->softmac_stats.no_ass_rs++;
1155 }
1156
1157 ieee->state = IEEE80211_ASSOCIATING_RETRY;
1158
1159 queue_delayed_work(ieee->wq, &ieee->associate_retry_wq,IEEE80211_SOFTMAC_ASSOC_RETRY_TIME);
1160
1161 spin_unlock_irqrestore(&ieee->lock, flags);
1162}
1163
1164void ieee80211_associate_abort_cb(unsigned long dev)
1165{
1166 ieee80211_associate_abort((struct ieee80211_device *) dev);
1167}
1168
1169
1170void ieee80211_associate_step1(struct ieee80211_device *ieee)
1171{
1172 struct ieee80211_network *beacon = &ieee->current_network;
1173 struct sk_buff *skb;
1174
1175 IEEE80211_DEBUG_MGMT("Stopping scan\n");
1176 ieee->softmac_stats.tx_auth_rq++;
1177 skb=ieee80211_authentication_req(beacon, ieee, 0);
1178 if (!skb){
1179
1180 ieee80211_associate_abort(ieee);
1181 }
1182 else{
1183 ieee->state = IEEE80211_ASSOCIATING_AUTHENTICATING ;
1184 IEEE80211_DEBUG_MGMT("Sending authentication request\n");
1185 //printk("---Sending authentication request\n");
1186 softmac_mgmt_xmit(skb, ieee);
1187 //BUGON when you try to add_timer twice, using mod_timer may be better, john0709
1188 if(!timer_pending(&ieee->associate_timer)){
1189 ieee->associate_timer.expires = jiffies + (HZ / 2);
1190 add_timer(&ieee->associate_timer);
1191 }
1192 //If call dev_kfree_skb_any,a warning will ocur....
1193 //KERNEL: assertion (!atomic_read(&skb->users)) failed at net/core/dev.c (1708)
1194 //So ... 1204 by lawrence.
1195 //printk("\nIn %s,line %d call kfree skb.",__func__,__LINE__);
1196 //dev_kfree_skb_any(skb);//edit by thomas
1197 }
1198}
1199
1200void ieee80211_rtl_auth_challenge(struct ieee80211_device *ieee, u8 *challenge, int chlen)
1201{
1202 u8 *c;
1203 struct sk_buff *skb;
1204 struct ieee80211_network *beacon = &ieee->current_network;
1205// int hlen = sizeof(struct ieee80211_authentication);
1206 del_timer_sync(&ieee->associate_timer);
1207 ieee->associate_seq++;
1208 ieee->softmac_stats.tx_auth_rq++;
1209
1210 skb = ieee80211_authentication_req(beacon, ieee, chlen+2);
1211 if (!skb)
1212 ieee80211_associate_abort(ieee);
1213 else{
1214 c = skb_put(skb, chlen+2);
1215 *(c++) = MFIE_TYPE_CHALLENGE;
1216 *(c++) = chlen;
1217 memcpy(c, challenge, chlen);
1218
1219 IEEE80211_DEBUG_MGMT("Sending authentication challenge response\n");
1220
1221 ieee80211_encrypt_fragment(ieee, skb, sizeof(struct ieee80211_hdr_3addr ));
1222
1223 softmac_mgmt_xmit(skb, ieee);
1224 if (!timer_pending(&ieee->associate_timer)){
1225 //printk("=========>add timer again, to crash\n");
1226 ieee->associate_timer.expires = jiffies + (HZ / 2);
1227 add_timer(&ieee->associate_timer);
1228 }
1229 dev_kfree_skb_any(skb);//edit by thomas
1230 }
1231 kfree(challenge);
1232}
1233
1234void ieee80211_associate_step2(struct ieee80211_device *ieee)
1235{
1236 struct sk_buff* skb;
1237 struct ieee80211_network *beacon = &ieee->current_network;
1238
1239 del_timer_sync(&ieee->associate_timer);
1240
1241 IEEE80211_DEBUG_MGMT("Sending association request\n");
1242 ieee->softmac_stats.tx_ass_rq++;
1243 skb=ieee80211_association_req(beacon, ieee);
1244 if (!skb)
1245 ieee80211_associate_abort(ieee);
1246 else{
1247 softmac_mgmt_xmit(skb, ieee);
1248 if (!timer_pending(&ieee->associate_timer)){
1249 ieee->associate_timer.expires = jiffies + (HZ / 2);
1250 add_timer(&ieee->associate_timer);
1251 }
1252 //dev_kfree_skb_any(skb);//edit by thomas
1253 }
1254}
1255
1256void ieee80211_associate_complete_wq(struct work_struct *work)
1257{
1258 struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, associate_complete_wq);
1259
1260 printk(KERN_INFO "Associated successfully\n");
1261 if(ieee80211_is_54g(ieee->current_network) &&
1262 (ieee->modulation & IEEE80211_OFDM_MODULATION)){
1263
1264 ieee->rate = 540;
1265 printk(KERN_INFO"Using G rates\n");
1266 }else{
1267 ieee->rate = 110;
1268 printk(KERN_INFO"Using B rates\n");
1269 }
1270 ieee->link_change(ieee->dev);
1271 notify_wx_assoc_event(ieee);
1272 if (ieee->data_hard_resume)
1273 ieee->data_hard_resume(ieee->dev);
1274 netif_carrier_on(ieee->dev);
1275}
1276
1277void ieee80211_associate_complete(struct ieee80211_device *ieee)
1278{
1279 int i;
1280 del_timer_sync(&ieee->associate_timer);
1281
1282 for(i = 0; i < 6; i++) {
1283 //ieee->seq_ctrl[i] = 0;
1284 }
1285 ieee->state = IEEE80211_LINKED;
1286 IEEE80211_DEBUG_MGMT("Successfully associated\n");
1287
1288 queue_work(ieee->wq, &ieee->associate_complete_wq);
1289}
1290
1291void ieee80211_associate_procedure_wq(struct work_struct *work)
1292{
1293 struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, associate_procedure_wq);
1294
1295 ieee->sync_scan_hurryup = 1;
1296 down(&ieee->wx_sem);
1297
1298 if (ieee->data_hard_stop)
1299 ieee->data_hard_stop(ieee->dev);
1300
1301 ieee80211_stop_scan(ieee);
1302 ieee->set_chan(ieee->dev, ieee->current_network.channel);
1303
1304 ieee->associate_seq = 1;
1305 ieee80211_associate_step1(ieee);
1306
1307 up(&ieee->wx_sem);
1308}
1309
1310inline void ieee80211_softmac_new_net(struct ieee80211_device *ieee, struct ieee80211_network *net)
1311{
1312 u8 tmp_ssid[IW_ESSID_MAX_SIZE+1];
1313 int tmp_ssid_len = 0;
1314
1315 short apset,ssidset,ssidbroad,apmatch,ssidmatch;
1316
1317 /* we are interested in new new only if we are not associated
1318 * and we are not associating / authenticating
1319 */
1320 if (ieee->state != IEEE80211_NOLINK)
1321 return;
1322
1323 if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability & WLAN_CAPABILITY_BSS))
1324 return;
1325
1326 if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability & WLAN_CAPABILITY_IBSS))
1327 return;
1328
1329
1330 if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC){
1331 /* if the user specified the AP MAC, we need also the essid
1332 * This could be obtained by beacons or, if the network does not
1333 * broadcast it, it can be put manually.
1334 */
1335 apset = ieee->wap_set;//(memcmp(ieee->current_network.bssid, zero,ETH_ALEN)!=0 );
1336 ssidset = ieee->ssid_set;//ieee->current_network.ssid[0] != '\0';
1337 ssidbroad = !(net->ssid_len == 0 || net->ssid[0]== '\0');
1338 apmatch = (memcmp(ieee->current_network.bssid, net->bssid, ETH_ALEN)==0);
1339
1340 if(ieee->current_network.ssid_len != net->ssid_len)
1341 ssidmatch = 0;
1342 else
1343 ssidmatch = (0==strncmp(ieee->current_network.ssid, net->ssid, net->ssid_len));
1344
1345 //printk("cur: %s, %d, net:%s, %d\n", ieee->current_network.ssid, ieee->current_network.ssid_len, net->ssid, net->ssid_len);
1346 //printk("apset=%d apmatch=%d ssidset=%d ssidbroad=%d ssidmatch=%d\n",apset,apmatch,ssidset,ssidbroad,ssidmatch);
1347
1348 if ( /* if the user set the AP check if match.
1349 * if the network does not broadcast essid we check the user supplyed ANY essid
1350 * if the network does broadcast and the user does not set essid it is OK
1351 * if the network does broadcast and the user did set essid chech if essid match
1352 */
1353 ( apset && apmatch &&
1354 ((ssidset && ssidbroad && ssidmatch) || (ssidbroad && !ssidset) || (!ssidbroad && ssidset)) ) ||
1355 /* if the ap is not set, check that the user set the bssid
1356 * and the network does bradcast and that those two bssid matches
1357 */
1358 (!apset && ssidset && ssidbroad && ssidmatch)
1359 ){
1360
1361
1362 /* if the essid is hidden replace it with the
1363 * essid provided by the user.
1364 */
1365 if (!ssidbroad){
1366 strncpy(tmp_ssid, ieee->current_network.ssid, IW_ESSID_MAX_SIZE);
1367 tmp_ssid_len = ieee->current_network.ssid_len;
1368 }
1369 memcpy(&ieee->current_network, net, sizeof(struct ieee80211_network));
1370
1371 if (!ssidbroad){
1372 strncpy(ieee->current_network.ssid, tmp_ssid, IW_ESSID_MAX_SIZE);
1373 ieee->current_network.ssid_len = tmp_ssid_len;
1374 }
1375 printk(KERN_INFO"Linking with %s: channel is %d\n",ieee->current_network.ssid,ieee->current_network.channel);
1376
1377 if (ieee->iw_mode == IW_MODE_INFRA){
1378 ieee->state = IEEE80211_ASSOCIATING;
1379 ieee->beinretry = false;
1380 queue_work(ieee->wq, &ieee->associate_procedure_wq);
1381 }else{
1382 if(ieee80211_is_54g(ieee->current_network) &&
1383 (ieee->modulation & IEEE80211_OFDM_MODULATION)){
1384 ieee->rate = 540;
1385 printk(KERN_INFO"Using G rates\n");
1386 }else{
1387 ieee->rate = 110;
1388 printk(KERN_INFO"Using B rates\n");
1389 }
1390 ieee->state = IEEE80211_LINKED;
1391 ieee->beinretry = false;
1392 }
1393
1394 }
1395 }
1396
1397}
1398
1399void ieee80211_softmac_check_all_nets(struct ieee80211_device *ieee)
1400{
1401 unsigned long flags;
1402 struct ieee80211_network *target;
1403
1404 spin_lock_irqsave(&ieee->lock, flags);
1405 list_for_each_entry(target, &ieee->network_list, list) {
1406
1407 /* if the state become different that NOLINK means
1408 * we had found what we are searching for
1409 */
1410
1411 if (ieee->state != IEEE80211_NOLINK)
1412 break;
1413
1414 if (ieee->scan_age == 0 || time_after(target->last_scanned + ieee->scan_age, jiffies))
1415 ieee80211_softmac_new_net(ieee, target);
1416 }
1417
1418 spin_unlock_irqrestore(&ieee->lock, flags);
1419
1420}
1421
1422
1423static inline u16 auth_parse(struct sk_buff *skb, u8** challenge, int *chlen)
1424{
1425 struct ieee80211_authentication *a;
1426 u8 *t;
1427 if (skb->len < (sizeof(struct ieee80211_authentication)-sizeof(struct ieee80211_info_element))){
1428 IEEE80211_DEBUG_MGMT("invalid len in auth resp: %d\n",skb->len);
1429 return 0xcafe;
1430 }
1431 *challenge = NULL;
1432 a = (struct ieee80211_authentication*) skb->data;
1433 if(skb->len > (sizeof(struct ieee80211_authentication) +3)){
1434 t = skb->data + sizeof(struct ieee80211_authentication);
1435
1436 if(*(t++) == MFIE_TYPE_CHALLENGE){
1437 *chlen = *(t++);
1438 *challenge = kmemdup(t, *chlen, GFP_ATOMIC);
1439 if (!*challenge)
1440 return -ENOMEM;
1441 }
1442 }
1443
1444 return cpu_to_le16(a->status);
1445
1446}
1447
1448
1449int auth_rq_parse(struct sk_buff *skb,u8* dest)
1450{
1451 struct ieee80211_authentication *a;
1452
1453 if (skb->len < (sizeof(struct ieee80211_authentication)-sizeof(struct ieee80211_info_element))){
1454 IEEE80211_DEBUG_MGMT("invalid len in auth request: %d\n",skb->len);
1455 return -1;
1456 }
1457 a = (struct ieee80211_authentication*) skb->data;
1458
1459 memcpy(dest,a->header.addr2, ETH_ALEN);
1460
1461 if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
1462 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1463
1464 return WLAN_STATUS_SUCCESS;
1465}
1466
1467static short probe_rq_parse(struct ieee80211_device *ieee, struct sk_buff *skb, u8 *src)
1468{
1469 u8 *tag;
1470 u8 *skbend;
1471 u8 *ssid=NULL;
1472 u8 ssidlen = 0;
1473
1474 struct ieee80211_hdr_3addr *header =
1475 (struct ieee80211_hdr_3addr *) skb->data;
1476
1477 if (skb->len < sizeof (struct ieee80211_hdr_3addr ))
1478 return -1; /* corrupted */
1479
1480 memcpy(src,header->addr2, ETH_ALEN);
1481
1482 skbend = (u8*)skb->data + skb->len;
1483
1484 tag = skb->data + sizeof (struct ieee80211_hdr_3addr );
1485
1486 while (tag+1 < skbend){
1487 if (*tag == 0){
1488 ssid = tag+2;
1489 ssidlen = *(tag+1);
1490 break;
1491 }
1492 tag++; /* point to the len field */
1493 tag = tag + *(tag); /* point to the last data byte of the tag */
1494 tag++; /* point to the next tag */
1495 }
1496
1497 //IEEE80211DMESG("Card MAC address is "MACSTR, MAC2STR(src));
1498 if (ssidlen == 0) return 1;
1499
1500 if (!ssid) return 1; /* ssid not found in tagged param */
1501 return (!strncmp(ssid, ieee->current_network.ssid, ssidlen));
1502
1503}
1504
1505int assoc_rq_parse(struct sk_buff *skb,u8* dest)
1506{
1507 struct ieee80211_assoc_request_frame *a;
1508
1509 if (skb->len < (sizeof(struct ieee80211_assoc_request_frame) -
1510 sizeof(struct ieee80211_info_element))) {
1511
1512 IEEE80211_DEBUG_MGMT("invalid len in auth request:%d \n", skb->len);
1513 return -1;
1514 }
1515
1516 a = (struct ieee80211_assoc_request_frame*) skb->data;
1517
1518 memcpy(dest,a->header.addr2,ETH_ALEN);
1519
1520 return 0;
1521}
1522
1523static inline u16 assoc_parse(struct sk_buff *skb, int *aid)
1524{
1525 struct ieee80211_assoc_response_frame *a;
1526 if (skb->len < sizeof(struct ieee80211_assoc_response_frame)){
1527 IEEE80211_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
1528 return 0xcafe;
1529 }
1530
1531 a = (struct ieee80211_assoc_response_frame*) skb->data;
1532 *aid = le16_to_cpu(a->aid) & 0x3fff;
1533 return le16_to_cpu(a->status);
1534}
1535
1536static inline void
1537ieee80211_rx_probe_rq(struct ieee80211_device *ieee, struct sk_buff *skb)
1538{
1539 u8 dest[ETH_ALEN];
1540
1541 //IEEE80211DMESG("Rx probe");
1542 ieee->softmac_stats.rx_probe_rq++;
1543 //DMESG("Dest is "MACSTR, MAC2STR(dest));
1544 if (probe_rq_parse(ieee, skb, dest)){
1545 //IEEE80211DMESG("Was for me!");
1546 ieee->softmac_stats.tx_probe_rs++;
1547 ieee80211_resp_to_probe(ieee, dest);
1548 }
1549}
1550
1551inline void
1552ieee80211_rx_auth_rq(struct ieee80211_device *ieee, struct sk_buff *skb)
1553{
1554 u8 dest[ETH_ALEN];
1555 int status;
1556 //IEEE80211DMESG("Rx probe");
1557 ieee->softmac_stats.rx_auth_rq++;
1558
1559 status = auth_rq_parse(skb, dest);
1560 if (status != -1) {
1561 ieee80211_resp_to_auth(ieee, status, dest);
1562 }
1563 //DMESG("Dest is "MACSTR, MAC2STR(dest));
1564
1565}
1566
1567 inline void
1568ieee80211_rx_assoc_rq(struct ieee80211_device *ieee, struct sk_buff *skb)
1569{
1570
1571 u8 dest[ETH_ALEN];
1572 //unsigned long flags;
1573
1574 ieee->softmac_stats.rx_ass_rq++;
1575 if (assoc_rq_parse(skb,dest) != -1){
1576 ieee80211_resp_to_assoc_rq(ieee, dest);
1577 }
1578
1579 printk(KERN_INFO"New client associated: %pM\n", dest);
1580}
1581
1582
1583
1584void ieee80211_sta_ps_send_null_frame(struct ieee80211_device *ieee, short pwr)
1585{
1586
1587 struct sk_buff *buf = ieee80211_null_func(ieee, pwr);
1588
1589 if (buf)
1590 softmac_ps_mgmt_xmit(buf, ieee);
1591
1592}
1593
1594
1595short ieee80211_sta_ps_sleep(struct ieee80211_device *ieee, u32 *time_h, u32 *time_l)
1596{
1597 int timeout = 0;
1598
1599 u8 dtim;
1600 /*if(ieee->ps == IEEE80211_PS_DISABLED ||
1601 ieee->iw_mode != IW_MODE_INFRA ||
1602 ieee->state != IEEE80211_LINKED)
1603
1604 return 0;
1605 */
1606 dtim = ieee->current_network.dtim_data;
1607 //printk("DTIM\n");
1608
1609 if(!(dtim & IEEE80211_DTIM_VALID))
1610 return 0;
1611 else
1612 timeout = ieee->current_network.beacon_interval;
1613
1614 //printk("VALID\n");
1615 ieee->current_network.dtim_data = IEEE80211_DTIM_INVALID;
1616
1617 if(dtim & ((IEEE80211_DTIM_UCAST | IEEE80211_DTIM_MBCAST)& ieee->ps))
1618 return 2;
1619
1620 if(!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout)))
1621 return 0;
1622
1623 if(!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout)))
1624 return 0;
1625
1626 if((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE ) &&
1627 (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
1628 return 0;
1629
1630 if(time_l){
1631 *time_l = ieee->current_network.last_dtim_sta_time[0]
1632 + MSECS((ieee->current_network.beacon_interval));
1633 //* ieee->current_network.dtim_period));
1634 //printk("beacon_interval:%x, dtim_period:%x, totol to Msecs:%x, HZ:%x\n", ieee->current_network.beacon_interval, ieee->current_network.dtim_period, MSECS(((ieee->current_network.beacon_interval * ieee->current_network.dtim_period))), HZ);
1635 }
1636
1637 if(time_h){
1638 *time_h = ieee->current_network.last_dtim_sta_time[1];
1639 if(time_l && *time_l < ieee->current_network.last_dtim_sta_time[0])
1640 *time_h += 1;
1641 }
1642
1643 return 1;
1644
1645
1646}
1647
1648inline void ieee80211_sta_ps(struct ieee80211_device *ieee)
1649{
1650
1651 u32 th,tl;
1652 short sleep;
1653
1654 unsigned long flags,flags2;
1655
1656 spin_lock_irqsave(&ieee->lock, flags);
1657
1658 if((ieee->ps == IEEE80211_PS_DISABLED ||
1659
1660 ieee->iw_mode != IW_MODE_INFRA ||
1661 ieee->state != IEEE80211_LINKED)){
1662
1663 //#warning CHECK_LOCK_HERE
1664 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
1665
1666 ieee80211_sta_wakeup(ieee, 1);
1667
1668 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
1669 }
1670
1671 sleep = ieee80211_sta_ps_sleep(ieee,&th, &tl);
1672// printk("===>%s,%d[2 wake, 1 sleep, 0 do nothing], ieee->sta_sleep = %d\n",__func__, sleep,ieee->sta_sleep);
1673 /* 2 wake, 1 sleep, 0 do nothing */
1674 if(sleep == 0)
1675 goto out;
1676
1677 if(sleep == 1){
1678
1679 if(ieee->sta_sleep == 1)
1680 ieee->enter_sleep_state(ieee->dev,th,tl);
1681
1682 else if(ieee->sta_sleep == 0){
1683 // printk("send null 1\n");
1684 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
1685
1686 if(ieee->ps_is_queue_empty(ieee->dev)){
1687
1688
1689 ieee->sta_sleep = 2;
1690
1691 ieee->ps_request_tx_ack(ieee->dev);
1692
1693 ieee80211_sta_ps_send_null_frame(ieee,1);
1694
1695 ieee->ps_th = th;
1696 ieee->ps_tl = tl;
1697 }
1698 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
1699
1700 }
1701
1702
1703 }else if(sleep == 2){
1704//#warning CHECK_LOCK_HERE
1705 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
1706
1707 // printk("send wakeup packet\n");
1708 ieee80211_sta_wakeup(ieee,1);
1709
1710 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
1711 }
1712
1713out:
1714 spin_unlock_irqrestore(&ieee->lock, flags);
1715
1716}
1717
1718void ieee80211_sta_wakeup(struct ieee80211_device *ieee, short nl)
1719{
1720 if(ieee->sta_sleep == 0){
1721 if(nl){
1722 // printk("Warning: driver is probably failing to report TX ps error\n");
1723 ieee->ps_request_tx_ack(ieee->dev);
1724 ieee80211_sta_ps_send_null_frame(ieee, 0);
1725 }
1726 return;
1727
1728 }
1729
1730 if(ieee->sta_sleep == 1)
1731 ieee->sta_wake_up(ieee->dev);
1732
1733 ieee->sta_sleep = 0;
1734
1735 if(nl){
1736 ieee->ps_request_tx_ack(ieee->dev);
1737 ieee80211_sta_ps_send_null_frame(ieee, 0);
1738 }
1739}
1740
1741void ieee80211_ps_tx_ack(struct ieee80211_device *ieee, short success)
1742{
1743 unsigned long flags,flags2;
1744
1745 spin_lock_irqsave(&ieee->lock, flags);
1746 if(ieee->sta_sleep == 2){
1747 /* Null frame with PS bit set */
1748 if(success){
1749
1750 // printk("==================> %s::enter sleep state\n",__func__);
1751 ieee->sta_sleep = 1;
1752 ieee->enter_sleep_state(ieee->dev,ieee->ps_th,ieee->ps_tl);
1753 }
1754 /* if the card report not success we can't be sure the AP
1755 * has not RXed so we can't assume the AP believe us awake
1756 */
1757 }
1758 /* 21112005 - tx again null without PS bit if lost */
1759 else {
1760
1761 if((ieee->sta_sleep == 0) && !success){
1762 spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
1763 ieee80211_sta_ps_send_null_frame(ieee, 0);
1764 spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
1765 }
1766 }
1767 spin_unlock_irqrestore(&ieee->lock, flags);
1768}
1769
1770inline int
1771ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb,
1772 struct ieee80211_rx_stats *rx_stats, u16 type,
1773 u16 stype)
1774{
1775 struct ieee80211_hdr_3addr *header = (struct ieee80211_hdr_3addr *) skb->data;
1776 u16 errcode;
1777 u8* challenge=NULL;
1778 int chlen=0;
1779 int aid=0;
1780 struct ieee80211_assoc_response_frame *assoc_resp;
1781 struct ieee80211_info_element *info_element;
1782
1783 if(!ieee->proto_started)
1784 return 0;
1785
1786 if(ieee->sta_sleep || (ieee->ps != IEEE80211_PS_DISABLED &&
1787 ieee->iw_mode == IW_MODE_INFRA &&
1788 ieee->state == IEEE80211_LINKED))
1789
1790 tasklet_schedule(&ieee->ps_task);
1791
1792 if (WLAN_FC_GET_STYPE(header->frame_control) != IEEE80211_STYPE_PROBE_RESP &&
1793 WLAN_FC_GET_STYPE(header->frame_control) != IEEE80211_STYPE_BEACON)
1794 ieee->last_rx_ps_time = jiffies;
1795
1796 switch (WLAN_FC_GET_STYPE(header->frame_control)) {
1797
1798 case IEEE80211_STYPE_ASSOC_RESP:
1799 case IEEE80211_STYPE_REASSOC_RESP:
1800
1801 IEEE80211_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
1802 WLAN_FC_GET_STYPE(header->frame_ctl));
1803 if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
1804 ieee->state == IEEE80211_ASSOCIATING_AUTHENTICATED &&
1805 ieee->iw_mode == IW_MODE_INFRA){
1806 if (0 == (errcode=assoc_parse(skb, &aid))){
1807 u16 left;
1808
1809 ieee->state=IEEE80211_LINKED;
1810 ieee->assoc_id = aid;
1811 ieee->softmac_stats.rx_ass_ok++;
1812
1813 //printk(KERN_WARNING "nic_type = %s", (rx_stats->nic_type == 1)?"rtl8187":"rtl8187B");
1814 if(1 == rx_stats->nic_type) //card type is 8187
1815 {
1816 goto associate_complete;
1817 }
1818 assoc_resp = (struct ieee80211_assoc_response_frame*)skb->data;
1819 info_element = &assoc_resp->info_element;
1820 left = skb->len - ((void*)info_element - (void*)assoc_resp);
1821
1822 while (left >= sizeof(struct ieee80211_info_element_hdr)) {
1823 if (sizeof(struct ieee80211_info_element_hdr) + info_element->len > left) {
1824 printk(KERN_WARNING "[re]associate reeponse error!");
1825 return 1;
1826 }
1827 switch (info_element->id) {
1828 case MFIE_TYPE_GENERIC:
1829 IEEE80211_DEBUG_SCAN("MFIE_TYPE_GENERIC: %d bytes\n", info_element->len);
1830 if (info_element->len >= 8 &&
1831 info_element->data[0] == 0x00 &&
1832 info_element->data[1] == 0x50 &&
1833 info_element->data[2] == 0xf2 &&
1834 info_element->data[3] == 0x02 &&
1835 info_element->data[4] == 0x01) {
1836 // Not care about version at present.
1837 //WMM Parameter Element
1838 memcpy(ieee->current_network.wmm_param,(u8*)(info_element->data\
1839 + 8),(info_element->len - 8));
1840
1841 if (((ieee->current_network.wmm_info^info_element->data[6])& \
1842 0x0f)||(!ieee->init_wmmparam_flag)) {
1843 // refresh parameter element for current netw…
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