1 /* IEEE 802.11 SoftMAC layer
2 * Copyright (c) 2005 Andrea Merello <andreamrl@tiscali.it>
4 * Mostly extracted from the rtl8180-sa2400 driver for the
5 * in-kernel generic ieee802.11 stack.
7 * Some pieces of code might be stolen from ipw2100 driver
8 * copyright of who own it's copyright ;-)
10 * PS wx handler mostly stolen from hostap, copyright who
11 * own it's copyright ;-)
13 * released under the GPL
17 #include "ieee80211.h"
19 /* FIXME: add A freqs */
21 const long ieee80211_wlan_frequencies
[] = {
22 2412, 2417, 2422, 2427,
23 2432, 2437, 2442, 2447,
24 2452, 2457, 2462, 2467,
29 int ieee80211_wx_set_freq(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,
30 union iwreq_data
*wrqu
, char *b
)
33 struct iw_freq
*fwrq
= & wrqu
->freq
;
37 if(ieee
->iw_mode
== IW_MODE_INFRA
){
42 /* if setting by freq convert to channel */
44 if ((fwrq
->m
>= (int) 2.412e8
&&
45 fwrq
->m
<= (int) 2.487e8
)) {
46 int f
= fwrq
->m
/ 100000;
49 while ((c
< 14) && (f
!= ieee80211_wlan_frequencies
[c
]))
52 /* hack to fall through */
58 if (fwrq
->e
> 0 || fwrq
->m
> 14 || fwrq
->m
< 1 ){
62 }else { /* Set the channel */
64 if (!(GET_DOT11D_INFO(ieee
)->channel_map
)[fwrq
->m
]) {
68 ieee
->current_network
.channel
= fwrq
->m
;
69 ieee
->set_chan(ieee
->dev
, ieee
->current_network
.channel
);
71 if(ieee
->iw_mode
== IW_MODE_ADHOC
|| ieee
->iw_mode
== IW_MODE_MASTER
)
72 if(ieee
->state
== IEEE80211_LINKED
){
74 ieee80211_stop_send_beacons(ieee
);
75 ieee80211_start_send_beacons(ieee
);
86 int ieee80211_wx_get_freq(struct ieee80211_device
*ieee
,
87 struct iw_request_info
*a
,
88 union iwreq_data
*wrqu
, char *b
)
90 struct iw_freq
*fwrq
= & wrqu
->freq
;
92 if (ieee
->current_network
.channel
== 0)
94 //NM 0.7.0 will not accept channel any more.
95 fwrq
->m
= ieee80211_wlan_frequencies
[ieee
->current_network
.channel
-1] * 100000;
97 // fwrq->m = ieee->current_network.channel;
103 int ieee80211_wx_get_wap(struct ieee80211_device
*ieee
,
104 struct iw_request_info
*info
,
105 union iwreq_data
*wrqu
, char *extra
)
109 wrqu
->ap_addr
.sa_family
= ARPHRD_ETHER
;
111 if (ieee
->iw_mode
== IW_MODE_MONITOR
)
114 /* We want avoid to give to the user inconsistent infos*/
115 spin_lock_irqsave(&ieee
->lock
, flags
);
117 if (ieee
->state
!= IEEE80211_LINKED
&&
118 ieee
->state
!= IEEE80211_LINKED_SCANNING
&&
121 memset(wrqu
->ap_addr
.sa_data
, 0, ETH_ALEN
);
123 memcpy(wrqu
->ap_addr
.sa_data
,
124 ieee
->current_network
.bssid
, ETH_ALEN
);
126 spin_unlock_irqrestore(&ieee
->lock
, flags
);
132 int ieee80211_wx_set_wap(struct ieee80211_device
*ieee
,
133 struct iw_request_info
*info
,
134 union iwreq_data
*awrq
,
139 u8 zero
[] = {0,0,0,0,0,0};
142 short ifup
= ieee
->proto_started
;//dev->flags & IFF_UP;
143 struct sockaddr
*temp
= (struct sockaddr
*)awrq
;
145 ieee
->sync_scan_hurryup
= 1;
148 /* use ifconfig hw ether */
149 if (ieee
->iw_mode
== IW_MODE_MASTER
){
154 if (temp
->sa_family
!= ARPHRD_ETHER
){
160 ieee80211_stop_protocol(ieee
);
162 /* just to avoid to give inconsistent infos in the
163 * get wx method. not really needed otherwise
165 spin_lock_irqsave(&ieee
->lock
, flags
);
167 memcpy(ieee
->current_network
.bssid
, temp
->sa_data
, ETH_ALEN
);
168 ieee
->wap_set
= memcmp(temp
->sa_data
, zero
,ETH_ALEN
)!=0;
170 spin_unlock_irqrestore(&ieee
->lock
, flags
);
173 ieee80211_start_protocol(ieee
);
179 int ieee80211_wx_get_essid(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,union iwreq_data
*wrqu
,char *b
)
184 if (ieee
->iw_mode
== IW_MODE_MONITOR
)
187 /* We want avoid to give to the user inconsistent infos*/
188 spin_lock_irqsave(&ieee
->lock
, flags
);
190 if (ieee
->current_network
.ssid
[0] == '\0' ||
191 ieee
->current_network
.ssid_len
== 0){
196 if (ieee
->state
!= IEEE80211_LINKED
&&
197 ieee
->state
!= IEEE80211_LINKED_SCANNING
&&
198 ieee
->ssid_set
== 0){
202 len
= ieee
->current_network
.ssid_len
;
203 wrqu
->essid
.length
= len
;
204 strncpy(b
,ieee
->current_network
.ssid
,len
);
205 wrqu
->essid
.flags
= 1;
208 spin_unlock_irqrestore(&ieee
->lock
, flags
);
214 int ieee80211_wx_set_rate(struct ieee80211_device
*ieee
,
215 struct iw_request_info
*info
,
216 union iwreq_data
*wrqu
, char *extra
)
219 u32 target_rate
= wrqu
->bitrate
.value
;
221 ieee
->rate
= target_rate
/100000;
222 //FIXME: we might want to limit rate also in management protocols.
228 int ieee80211_wx_get_rate(struct ieee80211_device
*ieee
,
229 struct iw_request_info
*info
,
230 union iwreq_data
*wrqu
, char *extra
)
233 tmp_rate
= TxCountToDataRate(ieee
, ieee
->softmac_stats
.CurrentShowTxate
);
235 wrqu
->bitrate
.value
= tmp_rate
* 500000;
241 int ieee80211_wx_set_rts(struct ieee80211_device
*ieee
,
242 struct iw_request_info
*info
,
243 union iwreq_data
*wrqu
, char *extra
)
245 if (wrqu
->rts
.disabled
|| !wrqu
->rts
.fixed
)
246 ieee
->rts
= DEFAULT_RTS_THRESHOLD
;
249 if (wrqu
->rts
.value
< MIN_RTS_THRESHOLD
||
250 wrqu
->rts
.value
> MAX_RTS_THRESHOLD
)
252 ieee
->rts
= wrqu
->rts
.value
;
257 int ieee80211_wx_get_rts(struct ieee80211_device
*ieee
,
258 struct iw_request_info
*info
,
259 union iwreq_data
*wrqu
, char *extra
)
261 wrqu
->rts
.value
= ieee
->rts
;
262 wrqu
->rts
.fixed
= 0; /* no auto select */
263 wrqu
->rts
.disabled
= (wrqu
->rts
.value
== DEFAULT_RTS_THRESHOLD
);
266 int ieee80211_wx_set_mode(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,
267 union iwreq_data
*wrqu
, char *b
)
270 ieee
->sync_scan_hurryup
= 1;
274 if (wrqu
->mode
== ieee
->iw_mode
)
277 if (wrqu
->mode
== IW_MODE_MONITOR
){
279 ieee
->dev
->type
= ARPHRD_IEEE80211
;
281 ieee
->dev
->type
= ARPHRD_ETHER
;
284 if (!ieee
->proto_started
){
285 ieee
->iw_mode
= wrqu
->mode
;
287 ieee80211_stop_protocol(ieee
);
288 ieee
->iw_mode
= wrqu
->mode
;
289 ieee80211_start_protocol(ieee
);
297 void ieee80211_wx_sync_scan_wq(struct work_struct
*work
)
299 struct ieee80211_device
*ieee
= container_of(work
, struct ieee80211_device
, wx_sync_scan_wq
);
301 HT_EXTCHNL_OFFSET chan_offset
=0;
302 HT_CHANNEL_WIDTH bandwidth
=0;
304 static int count
= 0;
305 chan
= ieee
->current_network
.channel
;
306 netif_carrier_off(ieee
->dev
);
308 if (ieee
->data_hard_stop
)
309 ieee
->data_hard_stop(ieee
->dev
);
311 ieee80211_stop_send_beacons(ieee
);
313 ieee
->state
= IEEE80211_LINKED_SCANNING
;
314 ieee
->link_change(ieee
->dev
);
315 ieee
->InitialGainHandler(ieee
->dev
,IG_Backup
);
316 if (ieee
->pHTInfo
->bCurrentHTSupport
&& ieee
->pHTInfo
->bEnableHT
&& ieee
->pHTInfo
->bCurBW40MHz
) {
318 chan_offset
= ieee
->pHTInfo
->CurSTAExtChnlOffset
;
319 bandwidth
= (HT_CHANNEL_WIDTH
)ieee
->pHTInfo
->bCurBW40MHz
;
320 printk("Scan in 40M, force to 20M first:%d, %d\n", chan_offset
, bandwidth
);
321 ieee
->SetBWModeHandler(ieee
->dev
, HT_CHANNEL_WIDTH_20
, HT_EXTCHNL_OFFSET_NO_EXT
);
323 ieee80211_start_scan_syncro(ieee
);
325 printk("Scan in 20M, back to 40M\n");
326 if (chan_offset
== HT_EXTCHNL_OFFSET_UPPER
)
327 ieee
->set_chan(ieee
->dev
, chan
+ 2);
328 else if (chan_offset
== HT_EXTCHNL_OFFSET_LOWER
)
329 ieee
->set_chan(ieee
->dev
, chan
- 2);
331 ieee
->set_chan(ieee
->dev
, chan
);
332 ieee
->SetBWModeHandler(ieee
->dev
, bandwidth
, chan_offset
);
334 ieee
->set_chan(ieee
->dev
, chan
);
337 ieee
->InitialGainHandler(ieee
->dev
,IG_Restore
);
338 ieee
->state
= IEEE80211_LINKED
;
339 ieee
->link_change(ieee
->dev
);
340 // To prevent the immediately calling watch_dog after scan.
341 if(ieee
->LinkDetectInfo
.NumRecvBcnInPeriod
==0||ieee
->LinkDetectInfo
.NumRecvDataInPeriod
==0 )
343 ieee
->LinkDetectInfo
.NumRecvBcnInPeriod
= 1;
344 ieee
->LinkDetectInfo
.NumRecvDataInPeriod
= 1;
346 if (ieee
->data_hard_resume
)
347 ieee
->data_hard_resume(ieee
->dev
);
349 if(ieee
->iw_mode
== IW_MODE_ADHOC
|| ieee
->iw_mode
== IW_MODE_MASTER
)
350 ieee80211_start_send_beacons(ieee
);
352 netif_carrier_on(ieee
->dev
);
358 int ieee80211_wx_set_scan(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,
359 union iwreq_data
*wrqu
, char *b
)
365 if (ieee
->iw_mode
== IW_MODE_MONITOR
|| !(ieee
->proto_started
)){
370 if ( ieee
->state
== IEEE80211_LINKED
){
371 queue_work(ieee
->wq
, &ieee
->wx_sync_scan_wq
);
372 /* intentionally forget to up sem */
381 int ieee80211_wx_set_essid(struct ieee80211_device
*ieee
,
382 struct iw_request_info
*a
,
383 union iwreq_data
*wrqu
, char *extra
)
390 ieee
->sync_scan_hurryup
= 1;
393 proto_started
= ieee
->proto_started
;
395 if (wrqu
->essid
.length
> IW_ESSID_MAX_SIZE
){
400 if (ieee
->iw_mode
== IW_MODE_MONITOR
){
406 ieee80211_stop_protocol(ieee
);
409 /* this is just to be sure that the GET wx callback
410 * has consisten infos. not needed otherwise
412 spin_lock_irqsave(&ieee
->lock
, flags
);
414 if (wrqu
->essid
.flags
&& wrqu
->essid
.length
) {
415 //first flush current network.ssid
416 len
= ((wrqu
->essid
.length
-1) < IW_ESSID_MAX_SIZE
) ? (wrqu
->essid
.length
-1) : IW_ESSID_MAX_SIZE
;
417 strncpy(ieee
->current_network
.ssid
, extra
, len
+1);
418 ieee
->current_network
.ssid_len
= len
+1;
423 ieee
->current_network
.ssid
[0] = '\0';
424 ieee
->current_network
.ssid_len
= 0;
426 spin_unlock_irqrestore(&ieee
->lock
, flags
);
429 ieee80211_start_protocol(ieee
);
435 int ieee80211_wx_get_mode(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,
436 union iwreq_data
*wrqu
, char *b
)
439 wrqu
->mode
= ieee
->iw_mode
;
443 int ieee80211_wx_set_rawtx(struct ieee80211_device
*ieee
,
444 struct iw_request_info
*info
,
445 union iwreq_data
*wrqu
, char *extra
)
448 int *parms
= (int *)extra
;
449 int enable
= (parms
[0] > 0);
450 short prev
= ieee
->raw_tx
;
459 printk(KERN_INFO
"raw TX is %s\n",
460 ieee
->raw_tx
? "enabled" : "disabled");
462 if(ieee
->iw_mode
== IW_MODE_MONITOR
)
464 if(prev
== 0 && ieee
->raw_tx
){
465 if (ieee
->data_hard_resume
)
466 ieee
->data_hard_resume(ieee
->dev
);
468 netif_carrier_on(ieee
->dev
);
471 if(prev
&& ieee
->raw_tx
== 1)
472 netif_carrier_off(ieee
->dev
);
480 int ieee80211_wx_get_name(struct ieee80211_device
*ieee
,
481 struct iw_request_info
*info
,
482 union iwreq_data
*wrqu
, char *extra
)
484 strcpy(wrqu
->name
, "802.11");
485 if(ieee
->modulation
& IEEE80211_CCK_MODULATION
){
486 strcat(wrqu
->name
, "b");
487 if(ieee
->modulation
& IEEE80211_OFDM_MODULATION
)
488 strcat(wrqu
->name
, "/g");
489 }else if(ieee
->modulation
& IEEE80211_OFDM_MODULATION
)
490 strcat(wrqu
->name
, "g");
491 if (ieee
->mode
& (IEEE_N_24G
| IEEE_N_5G
))
492 strcat(wrqu
->name
, "/n");
494 if((ieee
->state
== IEEE80211_LINKED
) ||
495 (ieee
->state
== IEEE80211_LINKED_SCANNING
))
496 strcat(wrqu
->name
," linked");
497 else if(ieee
->state
!= IEEE80211_NOLINK
)
498 strcat(wrqu
->name
," link..");
505 /* this is mostly stolen from hostap */
506 int ieee80211_wx_set_power(struct ieee80211_device
*ieee
,
507 struct iw_request_info
*info
,
508 union iwreq_data
*wrqu
, char *extra
)
513 if (wrqu
->power
.disabled
){
514 ieee
->ps
= IEEE80211_PS_DISABLED
;
517 if (wrqu
->power
.flags
& IW_POWER_TIMEOUT
) {
518 //ieee->ps_period = wrqu->power.value / 1000;
519 ieee
->ps_timeout
= wrqu
->power
.value
/ 1000;
522 if (wrqu
->power
.flags
& IW_POWER_PERIOD
) {
524 //ieee->ps_timeout = wrqu->power.value / 1000;
525 ieee
->ps_period
= wrqu
->power
.value
/ 1000;
529 switch (wrqu
->power
.flags
& IW_POWER_MODE
) {
530 case IW_POWER_UNICAST_R
:
531 ieee
->ps
= IEEE80211_PS_UNICAST
;
533 case IW_POWER_MULTICAST_R
:
534 ieee
->ps
= IEEE80211_PS_MBCAST
;
537 ieee
->ps
= IEEE80211_PS_UNICAST
| IEEE80211_PS_MBCAST
;
541 // ieee->ps = IEEE80211_PS_DISABLED;
555 /* this is stolen from hostap */
556 int ieee80211_wx_get_power(struct ieee80211_device
*ieee
,
557 struct iw_request_info
*info
,
558 union iwreq_data
*wrqu
, char *extra
)
564 if(ieee
->ps
== IEEE80211_PS_DISABLED
){
565 wrqu
->power
.disabled
= 1;
569 wrqu
->power
.disabled
= 0;
571 if ((wrqu
->power
.flags
& IW_POWER_TYPE
) == IW_POWER_TIMEOUT
) {
572 wrqu
->power
.flags
= IW_POWER_TIMEOUT
;
573 wrqu
->power
.value
= ieee
->ps_timeout
* 1000;
575 // ret = -EOPNOTSUPP;
577 wrqu
->power
.flags
= IW_POWER_PERIOD
;
578 wrqu
->power
.value
= ieee
->ps_period
* 1000;
579 //ieee->current_network.dtim_period * ieee->current_network.beacon_interval * 1024;
582 if ((ieee
->ps
& (IEEE80211_PS_MBCAST
| IEEE80211_PS_UNICAST
)) == (IEEE80211_PS_MBCAST
| IEEE80211_PS_UNICAST
))
583 wrqu
->power
.flags
|= IW_POWER_ALL_R
;
584 else if (ieee
->ps
& IEEE80211_PS_MBCAST
)
585 wrqu
->power
.flags
|= IW_POWER_MULTICAST_R
;
587 wrqu
->power
.flags
|= IW_POWER_UNICAST_R
;
594 EXPORT_SYMBOL(ieee80211_wx_get_essid
);
595 EXPORT_SYMBOL(ieee80211_wx_set_essid
);
596 EXPORT_SYMBOL(ieee80211_wx_set_rate
);
597 EXPORT_SYMBOL(ieee80211_wx_get_rate
);
598 EXPORT_SYMBOL(ieee80211_wx_set_wap
);
599 EXPORT_SYMBOL(ieee80211_wx_get_wap
);
600 EXPORT_SYMBOL(ieee80211_wx_set_mode
);
601 EXPORT_SYMBOL(ieee80211_wx_get_mode
);
602 EXPORT_SYMBOL(ieee80211_wx_set_scan
);
603 EXPORT_SYMBOL(ieee80211_wx_get_freq
);
604 EXPORT_SYMBOL(ieee80211_wx_set_freq
);
605 EXPORT_SYMBOL(ieee80211_wx_set_rawtx
);
606 EXPORT_SYMBOL(ieee80211_wx_get_name
);
607 EXPORT_SYMBOL(ieee80211_wx_set_power
);
608 EXPORT_SYMBOL(ieee80211_wx_get_power
);
609 EXPORT_SYMBOL(ieee80211_wlan_frequencies
);
610 EXPORT_SYMBOL(ieee80211_wx_set_rts
);
611 EXPORT_SYMBOL(ieee80211_wx_get_rts
);