1 /* IEEE 802.11 SoftMAC layer
2 * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com>
3 *
4 * Mostly extracted from the rtl8180-sa2400 driver for the
5 * in-kernel generic ieee802.11 stack.
6 *
7 * Some pieces of code might be stolen from ipw2100 driver
8 * copyright of who own it's copyright ;-)
9 *
10 * PS wx handler mostly stolen from hostap, copyright who
11 * own it's copyright ;-)
12 *
13 * released under the GPL
14 */
15
16
17 #include <linux/etherdevice.h>
18
19 #include "ieee80211.h"
20 #include "dot11d.h"
21 /* FIXME: add A freqs */
22
23 const long ieee80211_wlan_frequencies[] = {
24 2412, 2417, 2422, 2427,
25 2432, 2437, 2442, 2447,
26 2452, 2457, 2462, 2467,
27 2472, 2484
28 };
29 EXPORT_SYMBOL(ieee80211_wlan_frequencies);
30
ieee80211_wx_set_freq(struct ieee80211_device * ieee,struct iw_request_info * a,union iwreq_data * wrqu,char * b)31 int ieee80211_wx_set_freq(struct ieee80211_device *ieee, struct iw_request_info *a,
32 union iwreq_data *wrqu, char *b)
33 {
34 int ret;
35 struct iw_freq *fwrq = & wrqu->freq;
36
37 down(&ieee->wx_sem);
38
39 if(ieee->iw_mode == IW_MODE_INFRA){
40 ret = -EOPNOTSUPP;
41 goto out;
42 }
43
44 /* if setting by freq convert to channel */
45 if (fwrq->e == 1) {
46 if ((fwrq->m >= (int) 2.412e8 &&
47 fwrq->m <= (int) 2.487e8)) {
48 int f = fwrq->m / 100000;
49 int c = 0;
50
51 while ((c < 14) && (f != ieee80211_wlan_frequencies[c]))
52 c++;
53
54 /* hack to fall through */
55 fwrq->e = 0;
56 fwrq->m = c + 1;
57 }
58 }
59
60 if (fwrq->e > 0 || fwrq->m > 14 || fwrq->m < 1 ){
61 ret = -EOPNOTSUPP;
62 goto out;
63
64 }else { /* Set the channel */
65
66 if (!(GET_DOT11D_INFO(ieee)->channel_map)[fwrq->m]) {
67 ret = -EINVAL;
68 goto out;
69 }
70 ieee->current_network.channel = fwrq->m;
71 ieee->set_chan(ieee->dev, ieee->current_network.channel);
72
73 if(ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
74 if(ieee->state == IEEE80211_LINKED){
75
76 ieee80211_stop_send_beacons(ieee);
77 ieee80211_start_send_beacons(ieee);
78 }
79 }
80
81 ret = 0;
82 out:
83 up(&ieee->wx_sem);
84 return ret;
85 }
86 EXPORT_SYMBOL(ieee80211_wx_set_freq);
87
ieee80211_wx_get_freq(struct ieee80211_device * ieee,struct iw_request_info * a,union iwreq_data * wrqu,char * b)88 int ieee80211_wx_get_freq(struct ieee80211_device *ieee,
89 struct iw_request_info *a,
90 union iwreq_data *wrqu, char *b)
91 {
92 struct iw_freq *fwrq = & wrqu->freq;
93
94 if (ieee->current_network.channel == 0)
95 return -1;
96 //NM 0.7.0 will not accept channel any more.
97 fwrq->m = ieee80211_wlan_frequencies[ieee->current_network.channel-1] * 100000;
98 fwrq->e = 1;
99 // fwrq->m = ieee->current_network.channel;
100 // fwrq->e = 0;
101
102 return 0;
103 }
104 EXPORT_SYMBOL(ieee80211_wx_get_freq);
105
ieee80211_wx_get_wap(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)106 int ieee80211_wx_get_wap(struct ieee80211_device *ieee,
107 struct iw_request_info *info,
108 union iwreq_data *wrqu, char *extra)
109 {
110 unsigned long flags;
111
112 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
113
114 if (ieee->iw_mode == IW_MODE_MONITOR)
115 return -1;
116
117 /* We want avoid to give to the user inconsistent infos*/
118 spin_lock_irqsave(&ieee->lock, flags);
119
120 if (ieee->state != IEEE80211_LINKED &&
121 ieee->state != IEEE80211_LINKED_SCANNING &&
122 ieee->wap_set == 0)
123
124 memset(wrqu->ap_addr.sa_data, 0, ETH_ALEN);
125 else
126 memcpy(wrqu->ap_addr.sa_data,
127 ieee->current_network.bssid, ETH_ALEN);
128
129 spin_unlock_irqrestore(&ieee->lock, flags);
130
131 return 0;
132 }
133 EXPORT_SYMBOL(ieee80211_wx_get_wap);
134
ieee80211_wx_set_wap(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * awrq,char * extra)135 int ieee80211_wx_set_wap(struct ieee80211_device *ieee,
136 struct iw_request_info *info,
137 union iwreq_data *awrq,
138 char *extra)
139 {
140
141 int ret = 0;
142 unsigned long flags;
143
144 short ifup = ieee->proto_started;//dev->flags & IFF_UP;
145 struct sockaddr *temp = (struct sockaddr *)awrq;
146
147 ieee->sync_scan_hurryup = 1;
148
149 down(&ieee->wx_sem);
150 /* use ifconfig hw ether */
151 if (ieee->iw_mode == IW_MODE_MASTER){
152 ret = -1;
153 goto out;
154 }
155
156 if (temp->sa_family != ARPHRD_ETHER){
157 ret = -EINVAL;
158 goto out;
159 }
160
161 if (ifup)
162 ieee80211_stop_protocol(ieee);
163
164 /* just to avoid to give inconsistent infos in the
165 * get wx method. not really needed otherwise
166 */
167 spin_lock_irqsave(&ieee->lock, flags);
168
169 memcpy(ieee->current_network.bssid, temp->sa_data, ETH_ALEN);
170 ieee->wap_set = !is_zero_ether_addr(temp->sa_data);
171
172 spin_unlock_irqrestore(&ieee->lock, flags);
173
174 if (ifup)
175 ieee80211_start_protocol(ieee);
176 out:
177 up(&ieee->wx_sem);
178 return ret;
179 }
180 EXPORT_SYMBOL(ieee80211_wx_set_wap);
181
ieee80211_wx_get_essid(struct ieee80211_device * ieee,struct iw_request_info * a,union iwreq_data * wrqu,char * b)182 int ieee80211_wx_get_essid(struct ieee80211_device *ieee, struct iw_request_info *a,union iwreq_data *wrqu,char *b)
183 {
184 int len, ret = 0;
185 unsigned long flags;
186
187 if (ieee->iw_mode == IW_MODE_MONITOR)
188 return -1;
189
190 /* We want avoid to give to the user inconsistent infos*/
191 spin_lock_irqsave(&ieee->lock, flags);
192
193 if (ieee->current_network.ssid[0] == '\0' ||
194 ieee->current_network.ssid_len == 0){
195 ret = -1;
196 goto out;
197 }
198
199 if (ieee->state != IEEE80211_LINKED &&
200 ieee->state != IEEE80211_LINKED_SCANNING &&
201 ieee->ssid_set == 0){
202 ret = -1;
203 goto out;
204 }
205 len = ieee->current_network.ssid_len;
206 wrqu->essid.length = len;
207 strncpy(b, ieee->current_network.ssid, len);
208 wrqu->essid.flags = 1;
209
210 out:
211 spin_unlock_irqrestore(&ieee->lock, flags);
212
213 return ret;
214
215 }
216 EXPORT_SYMBOL(ieee80211_wx_get_essid);
217
ieee80211_wx_set_rate(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)218 int ieee80211_wx_set_rate(struct ieee80211_device *ieee,
219 struct iw_request_info *info,
220 union iwreq_data *wrqu, char *extra)
221 {
222
223 u32 target_rate = wrqu->bitrate.value;
224
225 ieee->rate = target_rate/100000;
226 //FIXME: we might want to limit rate also in management protocols.
227 return 0;
228 }
229 EXPORT_SYMBOL(ieee80211_wx_set_rate);
230
ieee80211_wx_get_rate(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)231 int ieee80211_wx_get_rate(struct ieee80211_device *ieee,
232 struct iw_request_info *info,
233 union iwreq_data *wrqu, char *extra)
234 {
235 u32 tmp_rate;
236 tmp_rate = TxCountToDataRate(ieee, ieee->softmac_stats.CurrentShowTxate);
237
238 wrqu->bitrate.value = tmp_rate * 500000;
239
240 return 0;
241 }
242 EXPORT_SYMBOL(ieee80211_wx_get_rate);
243
ieee80211_wx_set_rts(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)244 int ieee80211_wx_set_rts(struct ieee80211_device *ieee,
245 struct iw_request_info *info,
246 union iwreq_data *wrqu, char *extra)
247 {
248 if (wrqu->rts.disabled || !wrqu->rts.fixed)
249 ieee->rts = DEFAULT_RTS_THRESHOLD;
250 else
251 {
252 if (wrqu->rts.value < MIN_RTS_THRESHOLD ||
253 wrqu->rts.value > MAX_RTS_THRESHOLD)
254 return -EINVAL;
255 ieee->rts = wrqu->rts.value;
256 }
257 return 0;
258 }
259 EXPORT_SYMBOL(ieee80211_wx_set_rts);
260
ieee80211_wx_get_rts(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)261 int ieee80211_wx_get_rts(struct ieee80211_device *ieee,
262 struct iw_request_info *info,
263 union iwreq_data *wrqu, char *extra)
264 {
265 wrqu->rts.value = ieee->rts;
266 wrqu->rts.fixed = 0; /* no auto select */
267 wrqu->rts.disabled = (wrqu->rts.value == DEFAULT_RTS_THRESHOLD);
268 return 0;
269 }
270 EXPORT_SYMBOL(ieee80211_wx_get_rts);
271
ieee80211_wx_set_mode(struct ieee80211_device * ieee,struct iw_request_info * a,union iwreq_data * wrqu,char * b)272 int ieee80211_wx_set_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
273 union iwreq_data *wrqu, char *b)
274 {
275
276 ieee->sync_scan_hurryup = 1;
277
278 down(&ieee->wx_sem);
279
280 if (wrqu->mode == ieee->iw_mode)
281 goto out;
282
283 if (wrqu->mode == IW_MODE_MONITOR){
284
285 ieee->dev->type = ARPHRD_IEEE80211;
286 }else{
287 ieee->dev->type = ARPHRD_ETHER;
288 }
289
290 if (!ieee->proto_started){
291 ieee->iw_mode = wrqu->mode;
292 }else{
293 ieee80211_stop_protocol(ieee);
294 ieee->iw_mode = wrqu->mode;
295 ieee80211_start_protocol(ieee);
296 }
297
298 out:
299 up(&ieee->wx_sem);
300 return 0;
301 }
302 EXPORT_SYMBOL(ieee80211_wx_set_mode);
303
ieee80211_wx_sync_scan_wq(struct work_struct * work)304 void ieee80211_wx_sync_scan_wq(struct work_struct *work)
305 {
306 struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, wx_sync_scan_wq);
307 short chan;
308 HT_EXTCHNL_OFFSET chan_offset=0;
309 HT_CHANNEL_WIDTH bandwidth=0;
310 int b40M = 0;
311 static int count;
312 chan = ieee->current_network.channel;
313 netif_carrier_off(ieee->dev);
314
315 if (ieee->data_hard_stop)
316 ieee->data_hard_stop(ieee->dev);
317
318 ieee80211_stop_send_beacons(ieee);
319
320 ieee->state = IEEE80211_LINKED_SCANNING;
321 ieee->link_change(ieee->dev);
322 ieee->InitialGainHandler(ieee->dev, IG_Backup);
323 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT && ieee->pHTInfo->bCurBW40MHz) {
324 b40M = 1;
325 chan_offset = ieee->pHTInfo->CurSTAExtChnlOffset;
326 bandwidth = (HT_CHANNEL_WIDTH)ieee->pHTInfo->bCurBW40MHz;
327 printk("Scan in 40M, force to 20M first:%d, %d\n", chan_offset, bandwidth);
328 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
329 }
330 ieee80211_start_scan_syncro(ieee);
331 if (b40M) {
332 printk("Scan in 20M, back to 40M\n");
333 if (chan_offset == HT_EXTCHNL_OFFSET_UPPER)
334 ieee->set_chan(ieee->dev, chan + 2);
335 else if (chan_offset == HT_EXTCHNL_OFFSET_LOWER)
336 ieee->set_chan(ieee->dev, chan - 2);
337 else
338 ieee->set_chan(ieee->dev, chan);
339 ieee->SetBWModeHandler(ieee->dev, bandwidth, chan_offset);
340 } else {
341 ieee->set_chan(ieee->dev, chan);
342 }
343
344 ieee->InitialGainHandler(ieee->dev, IG_Restore);
345 ieee->state = IEEE80211_LINKED;
346 ieee->link_change(ieee->dev);
347 // To prevent the immediately calling watch_dog after scan.
348 if(ieee->LinkDetectInfo.NumRecvBcnInPeriod==0||ieee->LinkDetectInfo.NumRecvDataInPeriod==0 )
349 {
350 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
351 ieee->LinkDetectInfo.NumRecvDataInPeriod= 1;
352 }
353 if (ieee->data_hard_resume)
354 ieee->data_hard_resume(ieee->dev);
355
356 if(ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
357 ieee80211_start_send_beacons(ieee);
358
359 netif_carrier_on(ieee->dev);
360 count = 0;
361 up(&ieee->wx_sem);
362
363 }
364
ieee80211_wx_set_scan(struct ieee80211_device * ieee,struct iw_request_info * a,union iwreq_data * wrqu,char * b)365 int ieee80211_wx_set_scan(struct ieee80211_device *ieee, struct iw_request_info *a,
366 union iwreq_data *wrqu, char *b)
367 {
368 int ret = 0;
369
370 down(&ieee->wx_sem);
371
372 if (ieee->iw_mode == IW_MODE_MONITOR || !(ieee->proto_started)){
373 ret = -1;
374 goto out;
375 }
376
377 if ( ieee->state == IEEE80211_LINKED){
378 queue_work(ieee->wq, &ieee->wx_sync_scan_wq);
379 /* intentionally forget to up sem */
380 return 0;
381 }
382
383 out:
384 up(&ieee->wx_sem);
385 return ret;
386 }
387 EXPORT_SYMBOL(ieee80211_wx_set_scan);
388
ieee80211_wx_set_essid(struct ieee80211_device * ieee,struct iw_request_info * a,union iwreq_data * wrqu,char * extra)389 int ieee80211_wx_set_essid(struct ieee80211_device *ieee,
390 struct iw_request_info *a,
391 union iwreq_data *wrqu, char *extra)
392 {
393
394 int ret=0,len;
395 short proto_started;
396 unsigned long flags;
397
398 ieee->sync_scan_hurryup = 1;
399 down(&ieee->wx_sem);
400
401 proto_started = ieee->proto_started;
402
403 if (wrqu->essid.length > IW_ESSID_MAX_SIZE){
404 ret= -E2BIG;
405 goto out;
406 }
407
408 if (ieee->iw_mode == IW_MODE_MONITOR){
409 ret= -1;
410 goto out;
411 }
412
413 if(proto_started)
414 ieee80211_stop_protocol(ieee);
415
416
417 /* this is just to be sure that the GET wx callback
418 * has consisten infos. not needed otherwise
419 */
420 spin_lock_irqsave(&ieee->lock, flags);
421
422 if (wrqu->essid.flags && wrqu->essid.length) {
423 //first flush current network.ssid
424 len = ((wrqu->essid.length-1) < IW_ESSID_MAX_SIZE) ? (wrqu->essid.length-1) : IW_ESSID_MAX_SIZE;
425 strncpy(ieee->current_network.ssid, extra, len+1);
426 ieee->current_network.ssid_len = len+1;
427 ieee->ssid_set = 1;
428 }
429 else{
430 ieee->ssid_set = 0;
431 ieee->current_network.ssid[0] = '\0';
432 ieee->current_network.ssid_len = 0;
433 }
434 spin_unlock_irqrestore(&ieee->lock, flags);
435
436 if (proto_started)
437 ieee80211_start_protocol(ieee);
438 out:
439 up(&ieee->wx_sem);
440 return ret;
441 }
442 EXPORT_SYMBOL(ieee80211_wx_set_essid);
443
ieee80211_wx_get_mode(struct ieee80211_device * ieee,struct iw_request_info * a,union iwreq_data * wrqu,char * b)444 int ieee80211_wx_get_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
445 union iwreq_data *wrqu, char *b)
446 {
447
448 wrqu->mode = ieee->iw_mode;
449 return 0;
450 }
451 EXPORT_SYMBOL(ieee80211_wx_get_mode);
452
ieee80211_wx_set_rawtx(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)453 int ieee80211_wx_set_rawtx(struct ieee80211_device *ieee,
454 struct iw_request_info *info,
455 union iwreq_data *wrqu, char *extra)
456 {
457
458 int *parms = (int *)extra;
459 int enable = (parms[0] > 0);
460 short prev = ieee->raw_tx;
461
462 down(&ieee->wx_sem);
463
464 if(enable)
465 ieee->raw_tx = 1;
466 else
467 ieee->raw_tx = 0;
468
469 printk(KERN_INFO"raw TX is %s\n",
470 ieee->raw_tx ? "enabled" : "disabled");
471
472 if(ieee->iw_mode == IW_MODE_MONITOR)
473 {
474 if(prev == 0 && ieee->raw_tx){
475 if (ieee->data_hard_resume)
476 ieee->data_hard_resume(ieee->dev);
477
478 netif_carrier_on(ieee->dev);
479 }
480
481 if(prev && ieee->raw_tx == 1)
482 netif_carrier_off(ieee->dev);
483 }
484
485 up(&ieee->wx_sem);
486
487 return 0;
488 }
489 EXPORT_SYMBOL(ieee80211_wx_set_rawtx);
490
ieee80211_wx_get_name(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)491 int ieee80211_wx_get_name(struct ieee80211_device *ieee,
492 struct iw_request_info *info,
493 union iwreq_data *wrqu, char *extra)
494 {
495 strlcpy(wrqu->name, "802.11", IFNAMSIZ);
496 if (ieee->modulation & IEEE80211_CCK_MODULATION) {
497 strlcat(wrqu->name, "b", IFNAMSIZ);
498 if (ieee->modulation & IEEE80211_OFDM_MODULATION)
499 strlcat(wrqu->name, "/g", IFNAMSIZ);
500 } else if (ieee->modulation & IEEE80211_OFDM_MODULATION) {
501 strlcat(wrqu->name, "g", IFNAMSIZ);
502 }
503
504 if (ieee->mode & (IEEE_N_24G | IEEE_N_5G))
505 strlcat(wrqu->name, "/n", IFNAMSIZ);
506
507 if ((ieee->state == IEEE80211_LINKED) ||
508 (ieee->state == IEEE80211_LINKED_SCANNING))
509 strlcat(wrqu->name, " linked", IFNAMSIZ);
510 else if (ieee->state != IEEE80211_NOLINK)
511 strlcat(wrqu->name, " link..", IFNAMSIZ);
512
513 return 0;
514 }
515 EXPORT_SYMBOL(ieee80211_wx_get_name);
516
517 /* this is mostly stolen from hostap */
ieee80211_wx_set_power(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)518 int ieee80211_wx_set_power(struct ieee80211_device *ieee,
519 struct iw_request_info *info,
520 union iwreq_data *wrqu, char *extra)
521 {
522 int ret = 0;
523 down(&ieee->wx_sem);
524
525 if (wrqu->power.disabled){
526 ieee->ps = IEEE80211_PS_DISABLED;
527 goto exit;
528 }
529 if (wrqu->power.flags & IW_POWER_TIMEOUT) {
530 //ieee->ps_period = wrqu->power.value / 1000;
531 ieee->ps_timeout = wrqu->power.value / 1000;
532 }
533
534 if (wrqu->power.flags & IW_POWER_PERIOD) {
535
536 //ieee->ps_timeout = wrqu->power.value / 1000;
537 ieee->ps_period = wrqu->power.value / 1000;
538 //wrq->value / 1024;
539
540 }
541 switch (wrqu->power.flags & IW_POWER_MODE) {
542 case IW_POWER_UNICAST_R:
543 ieee->ps = IEEE80211_PS_UNICAST;
544 break;
545 case IW_POWER_MULTICAST_R:
546 ieee->ps = IEEE80211_PS_MBCAST;
547 break;
548 case IW_POWER_ALL_R:
549 ieee->ps = IEEE80211_PS_UNICAST | IEEE80211_PS_MBCAST;
550 break;
551
552 case IW_POWER_ON:
553 // ieee->ps = IEEE80211_PS_DISABLED;
554 break;
555
556 default:
557 ret = -EINVAL;
558 goto exit;
559
560 }
561 exit:
562 up(&ieee->wx_sem);
563 return ret;
564
565 }
566 EXPORT_SYMBOL(ieee80211_wx_set_power);
567
568 /* this is stolen from hostap */
ieee80211_wx_get_power(struct ieee80211_device * ieee,struct iw_request_info * info,union iwreq_data * wrqu,char * extra)569 int ieee80211_wx_get_power(struct ieee80211_device *ieee,
570 struct iw_request_info *info,
571 union iwreq_data *wrqu, char *extra)
572 {
573 down(&ieee->wx_sem);
574
575 if(ieee->ps == IEEE80211_PS_DISABLED){
576 wrqu->power.disabled = 1;
577 goto exit;
578 }
579
580 wrqu->power.disabled = 0;
581
582 if ((wrqu->power.flags & IW_POWER_TYPE) == IW_POWER_TIMEOUT) {
583 wrqu->power.flags = IW_POWER_TIMEOUT;
584 wrqu->power.value = ieee->ps_timeout * 1000;
585 } else {
586 // ret = -EOPNOTSUPP;
587 // goto exit;
588 wrqu->power.flags = IW_POWER_PERIOD;
589 wrqu->power.value = ieee->ps_period * 1000;
590 //ieee->current_network.dtim_period * ieee->current_network.beacon_interval * 1024;
591 }
592
593 if ((ieee->ps & (IEEE80211_PS_MBCAST | IEEE80211_PS_UNICAST)) == (IEEE80211_PS_MBCAST | IEEE80211_PS_UNICAST))
594 wrqu->power.flags |= IW_POWER_ALL_R;
595 else if (ieee->ps & IEEE80211_PS_MBCAST)
596 wrqu->power.flags |= IW_POWER_MULTICAST_R;
597 else
598 wrqu->power.flags |= IW_POWER_UNICAST_R;
599
600 exit:
601 up(&ieee->wx_sem);
602 return 0;
603
604 }
605 EXPORT_SYMBOL(ieee80211_wx_get_power);
606