1 /* IEEE 802.11 SoftMAC layer
2 * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com>
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 <linux/etherdevice.h>
19 #include "ieee80211.h"
21 /* FIXME: add A freqs */
23 const long ieee80211_wlan_frequencies
[] = {
24 2412, 2417, 2422, 2427,
25 2432, 2437, 2442, 2447,
26 2452, 2457, 2462, 2467,
29 EXPORT_SYMBOL(ieee80211_wlan_frequencies
);
31 int ieee80211_wx_set_freq(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,
32 union iwreq_data
*wrqu
, char *b
)
35 struct iw_freq
*fwrq
= &wrqu
->freq
;
39 if (ieee
->iw_mode
== IW_MODE_INFRA
) {
44 /* if setting by freq convert to channel */
46 if ((fwrq
->m
>= (int) 2.412e8
&&
47 fwrq
->m
<= (int) 2.487e8
)) {
48 int f
= fwrq
->m
/ 100000;
51 while ((c
< 14) && (f
!= ieee80211_wlan_frequencies
[c
]))
54 /* hack to fall through */
60 if (fwrq
->e
> 0 || fwrq
->m
> 14 || fwrq
->m
< 1) {
64 } else { /* Set the channel */
66 if (!(GET_DOT11D_INFO(ieee
)->channel_map
)[fwrq
->m
]) {
70 ieee
->current_network
.channel
= fwrq
->m
;
71 ieee
->set_chan(ieee
->dev
, ieee
->current_network
.channel
);
73 if (ieee
->iw_mode
== IW_MODE_ADHOC
|| ieee
->iw_mode
== IW_MODE_MASTER
)
74 if (ieee
->state
== IEEE80211_LINKED
) {
75 ieee80211_stop_send_beacons(ieee
);
76 ieee80211_start_send_beacons(ieee
);
85 EXPORT_SYMBOL(ieee80211_wx_set_freq
);
87 int ieee80211_wx_get_freq(struct ieee80211_device
*ieee
,
88 struct iw_request_info
*a
,
89 union iwreq_data
*wrqu
, char *b
)
91 struct iw_freq
*fwrq
= &wrqu
->freq
;
93 if (ieee
->current_network
.channel
== 0)
95 /* NM 0.7.0 will not accept channel any more. */
96 fwrq
->m
= ieee80211_wlan_frequencies
[ieee
->current_network
.channel
-1] * 100000;
98 /* fwrq->m = ieee->current_network.channel; */
103 EXPORT_SYMBOL(ieee80211_wx_get_freq
);
105 int ieee80211_wx_get_wap(struct ieee80211_device
*ieee
,
106 struct iw_request_info
*info
,
107 union iwreq_data
*wrqu
, char *extra
)
111 wrqu
->ap_addr
.sa_family
= ARPHRD_ETHER
;
113 if (ieee
->iw_mode
== IW_MODE_MONITOR
)
116 /* We want avoid to give to the user inconsistent infos*/
117 spin_lock_irqsave(&ieee
->lock
, flags
);
119 if (ieee
->state
!= IEEE80211_LINKED
&&
120 ieee
->state
!= IEEE80211_LINKED_SCANNING
&&
123 eth_zero_addr(wrqu
->ap_addr
.sa_data
);
125 memcpy(wrqu
->ap_addr
.sa_data
,
126 ieee
->current_network
.bssid
, ETH_ALEN
);
128 spin_unlock_irqrestore(&ieee
->lock
, flags
);
132 EXPORT_SYMBOL(ieee80211_wx_get_wap
);
134 int ieee80211_wx_set_wap(struct ieee80211_device
*ieee
,
135 struct iw_request_info
*info
,
136 union iwreq_data
*awrq
,
143 short ifup
= ieee
->proto_started
; /* dev->flags & IFF_UP; */
144 struct sockaddr
*temp
= (struct sockaddr
*)awrq
;
146 ieee
->sync_scan_hurryup
= 1;
149 /* use ifconfig hw ether */
150 if (ieee
->iw_mode
== IW_MODE_MASTER
) {
155 if (temp
->sa_family
!= ARPHRD_ETHER
) {
161 ieee80211_stop_protocol(ieee
);
163 /* just to avoid to give inconsistent infos in the
164 * get wx method. not really needed otherwise
166 spin_lock_irqsave(&ieee
->lock
, flags
);
168 memcpy(ieee
->current_network
.bssid
, temp
->sa_data
, ETH_ALEN
);
169 ieee
->wap_set
= !is_zero_ether_addr(temp
->sa_data
);
171 spin_unlock_irqrestore(&ieee
->lock
, flags
);
174 ieee80211_start_protocol(ieee
);
179 EXPORT_SYMBOL(ieee80211_wx_set_wap
);
181 int ieee80211_wx_get_essid(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,union iwreq_data
*wrqu
,char *b
)
186 if (ieee
->iw_mode
== IW_MODE_MONITOR
)
189 /* We want avoid to give to the user inconsistent infos*/
190 spin_lock_irqsave(&ieee
->lock
, flags
);
192 if (ieee
->current_network
.ssid
[0] == '\0' ||
193 ieee
->current_network
.ssid_len
== 0) {
198 if (ieee
->state
!= IEEE80211_LINKED
&&
199 ieee
->state
!= IEEE80211_LINKED_SCANNING
&&
200 ieee
->ssid_set
== 0) {
204 len
= ieee
->current_network
.ssid_len
;
205 wrqu
->essid
.length
= len
;
206 strncpy(b
, ieee
->current_network
.ssid
, len
);
207 wrqu
->essid
.flags
= 1;
210 spin_unlock_irqrestore(&ieee
->lock
, flags
);
215 EXPORT_SYMBOL(ieee80211_wx_get_essid
);
217 int ieee80211_wx_set_rate(struct ieee80211_device
*ieee
,
218 struct iw_request_info
*info
,
219 union iwreq_data
*wrqu
, char *extra
)
222 u32 target_rate
= wrqu
->bitrate
.value
;
224 ieee
->rate
= target_rate
/100000;
225 /* FIXME: we might want to limit rate also in management protocols. */
228 EXPORT_SYMBOL(ieee80211_wx_set_rate
);
230 int ieee80211_wx_get_rate(struct ieee80211_device
*ieee
,
231 struct iw_request_info
*info
,
232 union iwreq_data
*wrqu
, char *extra
)
235 tmp_rate
= TxCountToDataRate(ieee
, ieee
->softmac_stats
.CurrentShowTxate
);
237 wrqu
->bitrate
.value
= tmp_rate
* 500000;
241 EXPORT_SYMBOL(ieee80211_wx_get_rate
);
243 int ieee80211_wx_set_rts(struct ieee80211_device
*ieee
,
244 struct iw_request_info
*info
,
245 union iwreq_data
*wrqu
, char *extra
)
247 if (wrqu
->rts
.disabled
|| !wrqu
->rts
.fixed
)
248 ieee
->rts
= DEFAULT_RTS_THRESHOLD
;
251 if (wrqu
->rts
.value
< MIN_RTS_THRESHOLD
||
252 wrqu
->rts
.value
> MAX_RTS_THRESHOLD
)
254 ieee
->rts
= wrqu
->rts
.value
;
258 EXPORT_SYMBOL(ieee80211_wx_set_rts
);
260 int ieee80211_wx_get_rts(struct ieee80211_device
*ieee
,
261 struct iw_request_info
*info
,
262 union iwreq_data
*wrqu
, char *extra
)
264 wrqu
->rts
.value
= ieee
->rts
;
265 wrqu
->rts
.fixed
= 0; /* no auto select */
266 wrqu
->rts
.disabled
= (wrqu
->rts
.value
== DEFAULT_RTS_THRESHOLD
);
269 EXPORT_SYMBOL(ieee80211_wx_get_rts
);
271 int ieee80211_wx_set_mode(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,
272 union iwreq_data
*wrqu
, char *b
)
275 ieee
->sync_scan_hurryup
= 1;
279 if (wrqu
->mode
== ieee
->iw_mode
)
282 if (wrqu
->mode
== IW_MODE_MONITOR
) {
284 ieee
->dev
->type
= ARPHRD_IEEE80211
;
286 ieee
->dev
->type
= ARPHRD_ETHER
;
289 if (!ieee
->proto_started
) {
290 ieee
->iw_mode
= wrqu
->mode
;
292 ieee80211_stop_protocol(ieee
);
293 ieee
->iw_mode
= wrqu
->mode
;
294 ieee80211_start_protocol(ieee
);
301 EXPORT_SYMBOL(ieee80211_wx_set_mode
);
303 void ieee80211_wx_sync_scan_wq(struct work_struct
*work
)
305 struct ieee80211_device
*ieee
= container_of(work
, struct ieee80211_device
, wx_sync_scan_wq
);
307 HT_EXTCHNL_OFFSET chan_offset
=0;
308 HT_CHANNEL_WIDTH bandwidth
=0;
310 chan
= ieee
->current_network
.channel
;
311 netif_carrier_off(ieee
->dev
);
313 if (ieee
->data_hard_stop
)
314 ieee
->data_hard_stop(ieee
->dev
);
316 ieee80211_stop_send_beacons(ieee
);
318 ieee
->state
= IEEE80211_LINKED_SCANNING
;
319 ieee
->link_change(ieee
->dev
);
320 ieee
->InitialGainHandler(ieee
->dev
, IG_Backup
);
321 if (ieee
->pHTInfo
->bCurrentHTSupport
&& ieee
->pHTInfo
->bEnableHT
&& ieee
->pHTInfo
->bCurBW40MHz
) {
323 chan_offset
= ieee
->pHTInfo
->CurSTAExtChnlOffset
;
324 bandwidth
= (HT_CHANNEL_WIDTH
)ieee
->pHTInfo
->bCurBW40MHz
;
325 printk("Scan in 40M, force to 20M first:%d, %d\n", chan_offset
, bandwidth
);
326 ieee
->SetBWModeHandler(ieee
->dev
, HT_CHANNEL_WIDTH_20
, HT_EXTCHNL_OFFSET_NO_EXT
);
328 ieee80211_start_scan_syncro(ieee
);
330 printk("Scan in 20M, back to 40M\n");
331 if (chan_offset
== HT_EXTCHNL_OFFSET_UPPER
)
332 ieee
->set_chan(ieee
->dev
, chan
+ 2);
333 else if (chan_offset
== HT_EXTCHNL_OFFSET_LOWER
)
334 ieee
->set_chan(ieee
->dev
, chan
- 2);
336 ieee
->set_chan(ieee
->dev
, chan
);
337 ieee
->SetBWModeHandler(ieee
->dev
, bandwidth
, chan_offset
);
339 ieee
->set_chan(ieee
->dev
, chan
);
342 ieee
->InitialGainHandler(ieee
->dev
, IG_Restore
);
343 ieee
->state
= IEEE80211_LINKED
;
344 ieee
->link_change(ieee
->dev
);
345 /* To prevent the immediately calling watch_dog after scan. */
346 if (ieee
->LinkDetectInfo
.NumRecvBcnInPeriod
==0||ieee
->LinkDetectInfo
.NumRecvDataInPeriod
==0)
348 ieee
->LinkDetectInfo
.NumRecvBcnInPeriod
= 1;
349 ieee
->LinkDetectInfo
.NumRecvDataInPeriod
= 1;
351 if (ieee
->data_hard_resume
)
352 ieee
->data_hard_resume(ieee
->dev
);
354 if (ieee
->iw_mode
== IW_MODE_ADHOC
|| ieee
->iw_mode
== IW_MODE_MASTER
)
355 ieee80211_start_send_beacons(ieee
);
357 netif_carrier_on(ieee
->dev
);
362 int ieee80211_wx_set_scan(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,
363 union iwreq_data
*wrqu
, char *b
)
369 if (ieee
->iw_mode
== IW_MODE_MONITOR
|| !(ieee
->proto_started
)) {
374 if (ieee
->state
== IEEE80211_LINKED
) {
375 queue_work(ieee
->wq
, &ieee
->wx_sync_scan_wq
);
376 /* intentionally forget to up sem */
384 EXPORT_SYMBOL(ieee80211_wx_set_scan
);
386 int ieee80211_wx_set_essid(struct ieee80211_device
*ieee
,
387 struct iw_request_info
*a
,
388 union iwreq_data
*wrqu
, char *extra
)
395 ieee
->sync_scan_hurryup
= 1;
398 proto_started
= ieee
->proto_started
;
400 if (wrqu
->essid
.length
> IW_ESSID_MAX_SIZE
) {
405 if (ieee
->iw_mode
== IW_MODE_MONITOR
) {
411 ieee80211_stop_protocol(ieee
);
414 /* this is just to be sure that the GET wx callback
415 * has consisten infos. not needed otherwise
417 spin_lock_irqsave(&ieee
->lock
, flags
);
419 if (wrqu
->essid
.flags
&& wrqu
->essid
.length
) {
420 /* first flush current network.ssid */
421 len
= ((wrqu
->essid
.length
-1) < IW_ESSID_MAX_SIZE
) ? (wrqu
->essid
.length
-1) : IW_ESSID_MAX_SIZE
;
422 strncpy(ieee
->current_network
.ssid
, extra
, len
+1);
423 ieee
->current_network
.ssid_len
= len
+1;
428 ieee
->current_network
.ssid
[0] = '\0';
429 ieee
->current_network
.ssid_len
= 0;
431 spin_unlock_irqrestore(&ieee
->lock
, flags
);
434 ieee80211_start_protocol(ieee
);
439 EXPORT_SYMBOL(ieee80211_wx_set_essid
);
441 int ieee80211_wx_get_mode(struct ieee80211_device
*ieee
, struct iw_request_info
*a
,
442 union iwreq_data
*wrqu
, char *b
)
445 wrqu
->mode
= ieee
->iw_mode
;
448 EXPORT_SYMBOL(ieee80211_wx_get_mode
);
450 int ieee80211_wx_set_rawtx(struct ieee80211_device
*ieee
,
451 struct iw_request_info
*info
,
452 union iwreq_data
*wrqu
, char *extra
)
455 int *parms
= (int *)extra
;
456 int enable
= (parms
[0] > 0);
457 short prev
= ieee
->raw_tx
;
466 printk(KERN_INFO
"raw TX is %s\n",
467 ieee
->raw_tx
? "enabled" : "disabled");
469 if (ieee
->iw_mode
== IW_MODE_MONITOR
)
471 if (prev
== 0 && ieee
->raw_tx
) {
472 if (ieee
->data_hard_resume
)
473 ieee
->data_hard_resume(ieee
->dev
);
475 netif_carrier_on(ieee
->dev
);
478 if (prev
&& ieee
->raw_tx
== 1)
479 netif_carrier_off(ieee
->dev
);
486 EXPORT_SYMBOL(ieee80211_wx_set_rawtx
);
488 int ieee80211_wx_get_name(struct ieee80211_device
*ieee
,
489 struct iw_request_info
*info
,
490 union iwreq_data
*wrqu
, char *extra
)
492 strlcpy(wrqu
->name
, "802.11", IFNAMSIZ
);
493 if (ieee
->modulation
& IEEE80211_CCK_MODULATION
) {
494 strlcat(wrqu
->name
, "b", IFNAMSIZ
);
495 if (ieee
->modulation
& IEEE80211_OFDM_MODULATION
)
496 strlcat(wrqu
->name
, "/g", IFNAMSIZ
);
497 } else if (ieee
->modulation
& IEEE80211_OFDM_MODULATION
) {
498 strlcat(wrqu
->name
, "g", IFNAMSIZ
);
501 if (ieee
->mode
& (IEEE_N_24G
| IEEE_N_5G
))
502 strlcat(wrqu
->name
, "/n", IFNAMSIZ
);
504 if ((ieee
->state
== IEEE80211_LINKED
) ||
505 (ieee
->state
== IEEE80211_LINKED_SCANNING
))
506 strlcat(wrqu
->name
, " linked", IFNAMSIZ
);
507 else if (ieee
->state
!= IEEE80211_NOLINK
)
508 strlcat(wrqu
->name
, " link..", IFNAMSIZ
);
512 EXPORT_SYMBOL(ieee80211_wx_get_name
);
514 /* this is mostly stolen from hostap */
515 int ieee80211_wx_set_power(struct ieee80211_device
*ieee
,
516 struct iw_request_info
*info
,
517 union iwreq_data
*wrqu
, char *extra
)
522 if (wrqu
->power
.disabled
) {
523 ieee
->ps
= IEEE80211_PS_DISABLED
;
526 if (wrqu
->power
.flags
& IW_POWER_TIMEOUT
) {
527 /* ieee->ps_period = wrqu->power.value / 1000; */
528 ieee
->ps_timeout
= wrqu
->power
.value
/ 1000;
531 if (wrqu
->power
.flags
& IW_POWER_PERIOD
) {
533 /* ieee->ps_timeout = wrqu->power.value / 1000; */
534 ieee
->ps_period
= wrqu
->power
.value
/ 1000;
535 /* wrq->value / 1024; */
538 switch (wrqu
->power
.flags
& IW_POWER_MODE
) {
539 case IW_POWER_UNICAST_R
:
540 ieee
->ps
= IEEE80211_PS_UNICAST
;
542 case IW_POWER_MULTICAST_R
:
543 ieee
->ps
= IEEE80211_PS_MBCAST
;
546 ieee
->ps
= IEEE80211_PS_UNICAST
| IEEE80211_PS_MBCAST
;
550 /* ieee->ps = IEEE80211_PS_DISABLED; */
563 EXPORT_SYMBOL(ieee80211_wx_set_power
);
565 /* this is stolen from hostap */
566 int ieee80211_wx_get_power(struct ieee80211_device
*ieee
,
567 struct iw_request_info
*info
,
568 union iwreq_data
*wrqu
, char *extra
)
572 if (ieee
->ps
== IEEE80211_PS_DISABLED
) {
573 wrqu
->power
.disabled
= 1;
577 wrqu
->power
.disabled
= 0;
579 if ((wrqu
->power
.flags
& IW_POWER_TYPE
) == IW_POWER_TIMEOUT
) {
580 wrqu
->power
.flags
= IW_POWER_TIMEOUT
;
581 wrqu
->power
.value
= ieee
->ps_timeout
* 1000;
583 /* ret = -EOPNOTSUPP; */
585 wrqu
->power
.flags
= IW_POWER_PERIOD
;
586 wrqu
->power
.value
= ieee
->ps_period
* 1000;
587 /* ieee->current_network.dtim_period * ieee->current_network.beacon_interval * 1024; */
590 if ((ieee
->ps
& (IEEE80211_PS_MBCAST
| IEEE80211_PS_UNICAST
)) == (IEEE80211_PS_MBCAST
| IEEE80211_PS_UNICAST
))
591 wrqu
->power
.flags
|= IW_POWER_ALL_R
;
592 else if (ieee
->ps
& IEEE80211_PS_MBCAST
)
593 wrqu
->power
.flags
|= IW_POWER_MULTICAST_R
;
595 wrqu
->power
.flags
|= IW_POWER_UNICAST_R
;
602 EXPORT_SYMBOL(ieee80211_wx_get_power
);